ecos: packages/compat/posix/current/src/signal.cxx annotate

annotate packages/compat/posix/current/src/signal.cxx @ 1781:22d367a6f8f2

* src/signal.cxx: place the CYGBLD_ATTRIB_INIT_PRI such that it compiles for gcc 3.4.2 which is more picky about its placement.

author	asl
date	Mon, 04 Oct 2004 11:49:19 +0000
parents	489b846deeff
children	95427ba4245a

rev	line source
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1 //==========================================================================
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	2 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	3 // signal.cxx
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	4 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	5 // POSIX signal functions implementation
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	6 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	7 //==========================================================================
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	8 //####ECOSGPLCOPYRIGHTBEGIN####
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	9 // -------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	10 // This file is part of eCos, the Embedded Configurable Operating System.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
409 10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	12 // Copyright (C) 2002 Nick Garnett
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	13 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	14 // eCos is free software; you can redistribute it and/or modify it under
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	15 // the terms of the GNU General Public License as published by the Free
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	16 // Software Foundation; either version 2 or (at your option) any later version.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	17 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	18 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	19 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	20 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	21 // for more details.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	22 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	23 // You should have received a copy of the GNU General Public License along
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	24 // with eCos; if not, write to the Free Software Foundation, Inc.,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	25 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	26 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	27 // As a special exception, if other files instantiate templates or use macros
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	28 // or inline functions from this file, or you compile this file and link it
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	29 // with other works to produce a work based on this file, this file does not
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	30 // by itself cause the resulting work to be covered by the GNU General Public
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	31 // License. However the source code for this file must still be made available
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	32 // in accordance with section (3) of the GNU General Public License.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	33 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	34 // This exception does not invalidate any other reasons why a work based on
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	35 // this file might be covered by the GNU General Public License.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	36 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	37 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
210 d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	38 // at http://sources.redhat.com/ecos/ecos-license/
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	39 // -------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	40 //####ECOSGPLCOPYRIGHTEND####
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	41 //==========================================================================
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	42 //#####DESCRIPTIONBEGIN####
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	43 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	44 // Author(s): nickg
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	45 // Contributors: nickg
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	46 // Date: 2000-03-27
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	47 // Purpose: POSIX signal functions implementation
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	48 // Description: This file contains the implementation of the POSIX signal
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	49 // functions.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	50 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	51 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	52 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	53 //####DESCRIPTIONEND####
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	54 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	55 //==========================================================================
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	56
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 143 diff changeset	57 #include <pkgconf/posix.h>
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 143 diff changeset	58
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 143 diff changeset	59 #ifdef CYGPKG_POSIX_SIGNALS
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 143 diff changeset	60
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	61 #include <pkgconf/hal.h>
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	62 #include <pkgconf/kernel.h>
134 d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	63 #include <pkgconf/isoinfra.h>
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	64
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	65 #include <cyg/kernel/ktypes.h> // base kernel types
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	66 #include <cyg/infra/cyg_trac.h> // tracing macros
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	67 #include <cyg/infra/cyg_ass.h> // assertion macros
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	68
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	69 #include "pprivate.h" // POSIX private header
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	70
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	71 #include <signal.h> // our header
130 eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 115 diff changeset	72 #include <setjmp.h>
143 6b5f480c6929 Merge from eCos master repository on 2000-12-08-02:09:36-GMT jlarmour parents: 138 diff changeset	73 #include <unistd.h> // _exit
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	74
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	75 #include <cyg/kernel/clock.hxx>
177 4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 152 diff changeset	76 #include <cyg/kernel/thread.hxx>
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	77 #include <cyg/kernel/clock.inl>
177 4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 152 diff changeset	78 #include <cyg/kernel/thread.inl>
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	79
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	80 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	81 // Internal definitions
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	82
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	83 // Handle entry to a signal package function.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	84 #define SIGNAL_ENTRY() CYG_REPORT_FUNCTYPE( "returning %d" );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	85
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	86 // Do a signal package defined return. This requires the error code
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	87 // to be placed in errno, and if it is non-zero, -1 returned as the
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	88 // result of the function. This also gives us a place to put any
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	89 // generic tidyup handling needed for things like signal delivery and
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	90 // cancellation.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	91 #define SIGNAL_RETURN(err) \
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	92 CYG_MACRO_START \
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	93 int __retval = 0; \
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	94 if( err != 0 ) __retval = -1, errno = err; \
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	95 CYG_REPORT_RETVAL( __retval ); \
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	96 return __retval; \
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	97 CYG_MACRO_END
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	98
134 d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	99 // Similarly for functions that have valid non-zero returns
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	100 #define SIGNAL_RETURN_VALUE(val) \
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	101 CYG_MACRO_START \
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	102 CYG_REPORT_RETVAL( val ); \
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	103 return val; \
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	104 CYG_MACRO_END
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	105
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	106 // Range check on a signal value.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	107 #define SIGNAL_VALID(_sig_) (((_sig_) > 0) && ((_sig_) < ((int)sizeof(sigset_t)*8)))
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	108
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	109 //==========================================================================
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	110 // Signal management structures
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	111
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	112 typedef struct signal_info
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	113 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	114 struct signal_info *next; // link in list of pending signals
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	115 siginfo_t si; // siginfo to pass to handler
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	116 } signal_info;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	117
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	118 typedef struct
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	119 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	120 struct sigaction sa; // Sigaction defining what to do
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	121 signal_info *pending; // List of pending signals - this is
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	122 // a circular list with pending pointing
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	123 // to the tail element (or NULL if empty).
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	124 } signal_state;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	125
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	126 //==========================================================================
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	127 // Signal management variables
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	128
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	129 // Lock used to protect signal management structures
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	130 Cyg_Mutex signal_mutex CYGBLD_POSIX_INIT;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	131
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	132 // Condition variable for all threads in sigsuspend() and sigwait()
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	133 // to wait on.
1781 22d367a6f8f2 * src/signal.cxx: place the CYGBLD_ATTRIB_INIT_PRI such that it asl parents: 553 diff changeset	134 Cyg_Condition_Variable CYGBLD_POSIX_INIT signal_sigwait( signal_mutex ) ;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	135
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	136 // Global pending signal set
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	137 sigset_t sig_pending;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	138
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	139 // Array controlling signal states
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	140 static signal_state sigstate[sizeof(sigset_t)*8];
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	141
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	142 // Array of available signal_info objects for queueing signals
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	143 static signal_info siginfo[SIGQUEUE_MAX];
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	144
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	145 // List of free signal_info objects
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	146 static signal_info *siginfo_next = NULL;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	147
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	148 //==========================================================================
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	149 // Variables used to support alarm()
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	150
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	151 // Forward def of action function
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	152 static void sigalrm_action( Cyg_Alarm *alarm, CYG_ADDRWORD data );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	153
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	154 // Kernel alarm object
1781 22d367a6f8f2 * src/signal.cxx: place the CYGBLD_ATTRIB_INIT_PRI such that it asl parents: 553 diff changeset	155 static Cyg_Alarm CYGBLD_POSIX_INIT sigalrm_alarm( Cyg_Clock::real_time_clock, sigalrm_action, 0 ) ;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	156
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	157 // Set true when alarm is armed
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	158 volatile cyg_bool sigalrm_armed = false;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	159
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	160 // Set true when alarm has fired and is waiting to be delivered
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	161 volatile cyg_bool sigalrm_pending = false;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	162
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	163 //==========================================================================
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	164 // Implementation functions.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	165 // These are where the real work of the signal mechanism gets done.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	166
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	167 externC void cyg_posix_signal_start()
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	168 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	169 // Chain all free signal_info objects together
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	170 for( int i = 0; i < SIGQUEUE_MAX; i++ )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	171 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	172 siginfo[i].next = siginfo_next;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	173 siginfo_next = &siginfo[i];
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	174 }
134 d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	175
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	176 // initialize all signal actions to SIG_DFL
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	177 for ( unsigned int i=0; i<(sizeof(sigstate)/sizeof(signal_state)); i++ )
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	178 {
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	179 sigstate[i].sa.sa_handler = SIG_DFL;
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	180 }
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	181
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	182 // Clear the pending signal set
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	183 sigemptyset( &sig_pending );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	184 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	185
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	186 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	187 // Generate a signal
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	188
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	189 cyg_bool cyg_sigqueue( const struct sigevent *sev, int code,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	190 pthread_info *thread )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	191 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	192 if( sev->sigev_notify == SIGEV_NONE )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	193 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	194 // Do nothing
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	195 return true;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	196 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	197
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	198 if( sev->sigev_notify == SIGEV_THREAD )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	199 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	200 // create a thread to run the notification
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	201 // function.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	202 // FIXME: implement SIGEV_THREAD
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	203 return true;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	204 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	205
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	206 // Otherwise we must have a SIGEV_SIGNAL notification
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	207
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	208 // Find out whether the current thread already has the mutex
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	209 // locked. This is a distinct possibility if this function is
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	210 // called from the ASR while exiting the signal_sigwait condvar in
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	211 // pause() and sigtimedwait().
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	212
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	213 pthread_info *self = pthread_self_info();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	214 cyg_bool locked = (self != NULL) && (signal_mutex.get_owner() == self->thread);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	215
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	216 // Lock the mutex only if we do not already own it
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	217 if( !locked ) signal_mutex.lock();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	218
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	219 int signo = sev->sigev_signo;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	220 signal_state *ss = &sigstate[signo];
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	221
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	222 if( ss->sa.sa_flags & SA_SIGINFO )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	223 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	224 // We have a queuable signal, allocate a signal_info
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	225 // object and add it to the queue.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	226
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	227 if( siginfo_next == NULL )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	228 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	229 if( !locked ) signal_mutex.unlock();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	230 return false;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	231 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	232
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	233 signal_info *si = siginfo_next;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	234 siginfo_next = si->next;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	235
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	236 si->si.si_signo = signo;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	237 si->si.si_code = code;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	238 si->si.si_value = sev->sigev_value;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	239
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	240 if( ss->pending == NULL )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	241 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	242 si->next = si;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	243 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	244 else
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	245 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	246 si->next = ss->pending->next;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	247 ss->pending->next = si;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	248 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	249
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	250 ss->pending = si;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	251 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	252 // else A non-queuable signal, just set it pending
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	253
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	254 if( thread != NULL )
177 4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 152 diff changeset	255 {
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	256 sigaddset( &thread->sigpending, signo );
177 4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 152 diff changeset	257 // just wake the thread up now if it's blocked somewhere
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 152 diff changeset	258 if ((thread->sigpending & ~thread->sigmask) != 0)
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 152 diff changeset	259 {
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 152 diff changeset	260 thread->thread->set_asr_pending();
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 152 diff changeset	261 thread->thread->release();
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 152 diff changeset	262 }
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 152 diff changeset	263 }
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 152 diff changeset	264 else
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 152 diff changeset	265 {
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 152 diff changeset	266 sigaddset( &sig_pending, signo );
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 152 diff changeset	267 // Wake up any threads in sigsuspend() and sigwait().
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 152 diff changeset	268 if (!signal_sigwait.get_queue()->empty())
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 152 diff changeset	269 {
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 152 diff changeset	270 signal_sigwait.broadcast();
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 152 diff changeset	271 }
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 152 diff changeset	272 else
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 152 diff changeset	273 {
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 152 diff changeset	274 cyg_posix_pthread_release_thread( &sig_pending );
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 152 diff changeset	275 }
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 152 diff changeset	276 }
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	277
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	278 if( !locked ) signal_mutex.unlock();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	279
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	280 return true;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	281 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	282
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	283 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	284 // Deliver any pending unblocked signals to the current thread
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	285 // Returns true if a signal handler was called.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	286
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	287 cyg_bool cyg_deliver_signals()
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	288 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	289 cyg_bool res = false;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	290
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	291 pthread_info *self = pthread_self_info();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	292
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	293 // If there is no pthread_info pointer for this thread then
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	294 // it is not a POSIX thread and cannot have signals delivered
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	295 // to it.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	296
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	297 if( self == NULL ) return false;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	298
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	299 // If there are no pending signals our work is done
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	300 if( sig_pending == 0 && self->sigpending == 0 )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	301 return false;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	302
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	303 // If there are no unmasked pending signals our
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	304 // work is also done
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	305 if( ((sig_pending \| self->sigpending) & ~self->sigmask) == 0 )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	306 return false;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	307
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	308 // As with cyg_sigqueue(), this function can get called from an
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	309 // ASR where the signal_mutex is already locked. Check here to
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	310 // avoid relocking...
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	311
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	312 cyg_bool locked = signal_mutex.get_owner() == self->thread;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	313
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	314 if( !locked ) signal_mutex.lock();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	315
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	316 sigset_t todo;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	317
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	318 // Since a signal handler may raise another signal, or unmask an existing
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	319 // signal, we loop here while there are no more unblocked signals pending.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	320 while( (todo = ((sig_pending \| self->sigpending) & ~self->sigmask)) != 0 )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	321 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	322 // Here todo is a mask of the signals available for delivery
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	323
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	324 int signo = 0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	325
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	326 // This prioritizes low numbered signals
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	327 HAL_LSBIT_INDEX( signo, todo );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	328
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	329 signal_state *ss = &sigstate[signo];
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	330 sigset_t sigbit = 1L<<signo;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	331
134 d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	332 if( ss->sa.sa_handler != SIG_IGN )
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	333 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	334 sigset_t oldmask = self->sigmask;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	335 siginfo_t lsi;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	336
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	337 if(ss->pending != NULL)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	338 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	339 // There is a queued signal. Dequeue it and copy the
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	340 // siginfo object to a local copy.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	341
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	342 signal_info *si = ss->pending->next;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	343
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	344 // Make a local copy of the siginfo object
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	345 lsi = si->si;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	346
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	347 // Remove the head signal_info object from the
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	348 // circular list.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	349 if( ss->pending == si )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	350 ss->pending = NULL;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	351 else
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	352 ss->pending->next = si->next;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	353
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	354 // Return it to the free list
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	355 si->next = siginfo_next;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	356 siginfo_next = si;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	357 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	358 else
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	359 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	360 // There are no signals queued. Set up the local siginfo_t
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	361 // object with default values.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	362
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	363 lsi.si_signo = signo;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	364 lsi.si_code = SI_USER;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	365 lsi.si_value.sival_int = 0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	366 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	367
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	368 // Clear the bit from the pending masks. If the pending
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	369 // queue is not empty, leave the bits set, otherwise clear
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	370 // them. Do this now so that if the signal handler longjumps
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	371 // out, the signal subsystem is clean.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	372
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	373 if( ss->pending == NULL )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	374 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	375 // Clear the bit in both masks regardless of which
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	376 // one it actually came from. This is cheaper than
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	377 // trying to find out.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	378 sig_pending &= ~sigbit;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	379 self->sigpending &= ~sigbit;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	380 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	381
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	382 // Add the mask set and the signal itself to the
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	383 // mask while we call the signal handler
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	384 self->sigmask = oldmask \| ss->sa.sa_mask \| sigbit;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	385
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	386 // Unlock now so that a longjmp out of the handler
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	387 // does the right thing. We do this even if we did not
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	388 // lock the mutex since it will only recently have been
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	389 // relocked and thus all data is still consistent.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	390
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	391 signal_mutex.unlock();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	392
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	393 if( ss->sa.sa_flags & SA_SIGINFO )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	394 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	395 // A sigaction delivery
134 d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	396 CYG_CHECK_FUNC_PTR( ss->sa.sa_sigaction,
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	397 "Bad sa_sigaction signal handler" );
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	398 ss->sa.sa_sigaction( signo, &lsi, NULL );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	399 }
138 289bf90c6a9b Merge from eCos master repository on 2000-11-24-06:43:05-GMT jlarmour parents: 136 diff changeset	400 else if ( ss->sa.sa_handler == SIG_DFL )
134 d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	401 {
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	402 CYG_TRACE2( true,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	403 "Unhandled POSIX signal: sig=%d, mask=%08x",
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	404 signo, oldmask );
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 191 diff changeset	405
134 d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	406 // FIXME: should do something better here
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	407 #if CYGINT_ISO_EXIT
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	408 _exit( -signo );
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	409 #endif
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	410 CYG_FAIL("Unhandled POSIX signal");
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	411 }
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	412 else
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	413 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	414 // This is a standard signal delivery.
134 d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	415 CYG_CHECK_FUNC_PTR( ss->sa.sa_handler,
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	416 "Bad sa_handler signal handler" );
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	417
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	418 ss->sa.sa_handler( signo );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	419 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	420
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	421 // Relock the mutex
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	422 signal_mutex.lock();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	423
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	424 // Restore original signal mask
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	425 self->sigmask = oldmask;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	426
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	427 // return that we have handled a signal
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	428 res = true;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	429 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	430 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	431
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	432 if( !locked ) signal_mutex.unlock();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	433
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	434 return res;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	435 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	436
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	437 // -------------------------------------------------------------------------
553 489b846deeff * src/time.cxx (alarm_action): Added call to nickg parents: 519 diff changeset	438 // Utility routine to signal any threads waiting in sigwait*().
489b846deeff * src/time.cxx (alarm_action): Added call to nickg parents: 519 diff changeset	439
489b846deeff * src/time.cxx (alarm_action): Added call to nickg parents: 519 diff changeset	440 void cyg_posix_signal_sigwait()
489b846deeff * src/time.cxx (alarm_action): Added call to nickg parents: 519 diff changeset	441 {
489b846deeff * src/time.cxx (alarm_action): Added call to nickg parents: 519 diff changeset	442 signal_sigwait.broadcast();
489b846deeff * src/time.cxx (alarm_action): Added call to nickg parents: 519 diff changeset	443 }
489b846deeff * src/time.cxx (alarm_action): Added call to nickg parents: 519 diff changeset	444
489b846deeff * src/time.cxx (alarm_action): Added call to nickg parents: 519 diff changeset	445 // -------------------------------------------------------------------------
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	446 // Action routine called from kernel alarm to deliver the SIGALRM signal.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	447 // We cannot call any signal delivery functions directly here, so we simply
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	448 // set a flag and schedule an ASR to be called.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	449
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	450 static void sigalrm_action( Cyg_Alarm *alarm, CYG_ADDRWORD data )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	451 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	452 sigset_t mask;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	453 sigalrm_armed = false;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	454 sigalrm_pending = true;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	455 sigemptyset( &mask );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	456 sigaddset( &mask, SIGALRM );
134 d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	457 // Wake up any threads in sigsuspend() and sigwait() in case they
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	458 // are waiting for an alarm, and would have SIGALRM masked
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	459 signal_sigwait.broadcast();
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	460
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	461 cyg_posix_pthread_release_thread( &mask );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	462 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	463
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	464 // -------------------------------------------------------------------------
134 d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	465 // Check for SIGALRMs. This is called from the ASR and sigtimedwait()
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	466 // as alarms need to be handled as a special case.
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	467
134 d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	468 static __inline__ void check_sigalarm(void)
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	469 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	470 // If there is a pending SIGALRM, generate it
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	471 if( sigalrm_pending )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	472 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	473 sigalrm_pending = false;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	474
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	475 struct sigevent sev;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	476
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	477 sev.sigev_notify = SIGEV_SIGNAL;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	478 sev.sigev_signo = SIGALRM;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	479 sev.sigev_value.sival_int = 0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	480
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	481 // generate the signal
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	482 cyg_sigqueue( &sev, SI_USER );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	483 }
134 d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	484 }
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	485
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	486 // -------------------------------------------------------------------------
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	487 // signal ASR function. This is called from the general POSIX ASR to
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	488 // deal with any signal related issues.
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	489
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	490 externC void cyg_posix_signal_asr(pthread_info *self)
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	491 {
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	492 check_sigalarm();
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	493
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	494 // Now call cyg_deliver_signals() to see if we can
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	495 // handle any signals now.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	496
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	497 cyg_deliver_signals();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	498 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	499
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	500 //==========================================================================
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	501 // Per-thread initialization and destruction
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	502
136 a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 134 diff changeset	503 externC void cyg_posix_thread_siginit( pthread_info *thread,
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 134 diff changeset	504 pthread_info *parentthread )
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	505 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	506 // Clear out signal masks
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	507 sigemptyset( &thread->sigpending );
136 a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 134 diff changeset	508 // but threads inherit signal masks
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 134 diff changeset	509 if ( NULL == parentthread )
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 134 diff changeset	510 sigemptyset( &thread->sigmask );
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 134 diff changeset	511 else
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 134 diff changeset	512 thread->sigmask = parentthread->sigmask;
a9ac27ec7abc Merge from eCos master repository on 2000-11-17-18:24:25-GMT jlarmour parents: 134 diff changeset	513
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	514 cyg_pthread_exception_init( thread );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	515 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	516
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	517 externC void cyg_posix_thread_sigdestroy( pthread_info *thread )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	518 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	519 cyg_pthread_exception_destroy( thread );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	520 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	521
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	522 //==========================================================================
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	523 // Functions to generate signals
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	524
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	525 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	526 // Deliver sig to a process.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	527 // eCos only supports the value 0 for pid.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	528
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	529 externC int kill (pid_t pid, int sig)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	530 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	531 SIGNAL_ENTRY();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	532
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	533 if( !SIGNAL_VALID(sig) )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	534 SIGNAL_RETURN(EINVAL);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	535
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	536 if( pid != 0 )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	537 SIGNAL_RETURN(ESRCH);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	538
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	539 struct sigevent sev;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	540
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	541 sev.sigev_notify = SIGEV_SIGNAL;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	542 sev.sigev_signo = sig;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	543 sev.sigev_value.sival_int = 0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	544
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	545 cyg_sigqueue( &sev, SI_USER );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	546
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	547 cyg_deliver_signals();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	548
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	549 SIGNAL_RETURN(0);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	550 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	551
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	552 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	553
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	554 externC int pthread_kill (pthread_t threadid, int sig)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	555 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	556 SIGNAL_ENTRY();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	557
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	558 if( !SIGNAL_VALID(sig) )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	559 SIGNAL_RETURN(EINVAL);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	560
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	561 struct sigevent sev;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	562
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	563 pthread_info *thread = pthread_info_id(threadid);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	564
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	565 if( thread == NULL )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	566 SIGNAL_RETURN(ESRCH);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	567
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	568 sev.sigev_notify = SIGEV_SIGNAL;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	569 sev.sigev_signo = sig;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	570 sev.sigev_value.sival_int = 0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	571
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	572 cyg_sigqueue( &sev, SI_USER, thread );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	573
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	574 cyg_deliver_signals();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	575
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	576 SIGNAL_RETURN(0);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	577 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	578
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	579 //==========================================================================
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	580 // Functions to catch signals
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	581
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	582 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	583 // Install signal handler for sig.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	584
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	585 externC int sigaction (int sig, const struct sigaction *act,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	586 struct sigaction *oact)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	587 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	588 SIGNAL_ENTRY();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	589
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	590 if( !SIGNAL_VALID(sig) )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	591 SIGNAL_RETURN(EINVAL);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	592
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	593 signal_state *ss = &sigstate[sig];
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	594
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	595 signal_mutex.lock();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	596
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	597 if( oact != NULL )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	598 *oact = ss->sa;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	599
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	600 ss->sa = *act;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	601
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	602 if( ss->sa.sa_handler == SIG_IGN )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	603 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	604 // Setting the handler to SIG_IGN causes any pending
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	605 // signals to be discarded and any queued values to also
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	606 // be removed.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	607
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	608 pthread_info *self = pthread_self_info();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	609 sigset_t sigbit = 1<<sig;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	610
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	611 if( (sig_pending \| self->sigpending) & sigbit )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	612 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	613 // This signal is pending, clear it
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	614
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	615 sig_pending &= ~sigbit;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	616 self->sigpending &= ~sigbit;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	617
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	618 // Clean out any queued signal_info objects
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	619 while( ss->pending != NULL )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	620 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	621 signal_info *si = ss->pending->next;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	622
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	623 // Remove the head signal_info object from the
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	624 // circular list.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	625 if( ss->pending == si )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	626 ss->pending = NULL;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	627 else
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	628 ss->pending->next = si->next;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	629
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	630 // Return it to the free list
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	631 si->next = siginfo_next;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	632 siginfo_next = si;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	633 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	634 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	635 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	636
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	637 cyg_deliver_signals();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	638
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	639 signal_mutex.unlock();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	640
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	641 SIGNAL_RETURN(0);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	642 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	643
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	644
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	645 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	646 // Queue signal to process with value.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	647
134 d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	648 externC int sigqueue (pid_t pid, int sig, const union sigval value)
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	649 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	650 SIGNAL_ENTRY();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	651
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	652 if( !SIGNAL_VALID(sig) )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	653 SIGNAL_RETURN(EINVAL);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	654
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	655 struct sigevent sev;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	656
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	657 sev.sigev_notify = SIGEV_SIGNAL;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	658 sev.sigev_signo = sig;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	659 sev.sigev_value = value;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	660
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	661 cyg_sigqueue( &sev, SI_QUEUE );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	662
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	663 cyg_deliver_signals();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	664
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	665 SIGNAL_RETURN(0);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	666 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	667
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	668 //==========================================================================
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	669 // Functions to deal with current blocked and pending masks
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	670
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	671 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	672 // Set process blocked signal mask
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	673 // Map this onto pthread_sigmask().
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	674
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	675 externC int sigprocmask (int how, const sigset_t set, sigset_t oset)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	676 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	677 return pthread_sigmask( how, set, oset);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	678 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	679
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	680
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	681 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	682 // Set calling thread's blocked signal mask
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	683
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	684 externC int pthread_sigmask (int how, const sigset_t set, sigset_t oset)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	685 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	686 int err = 0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	687
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	688 SIGNAL_ENTRY();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	689
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	690 pthread_info *self = pthread_self_info();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	691 // Save old set
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	692 if( oset != NULL )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	693 *oset = self->sigmask;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	694
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	695 if( set != NULL )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	696 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	697 switch( how )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	698 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	699 case SIG_BLOCK:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	700 self->sigmask \|= *set;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	701 break;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	702
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	703 case SIG_UNBLOCK:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	704 self->sigmask &= ~*set;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	705 break;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	706
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	707 case SIG_SETMASK:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	708 self->sigmask = *set;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	709 break;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	710
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	711 default:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	712 err = EINVAL;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	713 break;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	714 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	715 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	716
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	717 // Deliver any newly unblocked signals
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	718 cyg_deliver_signals();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	719
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	720 SIGNAL_RETURN(err);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	721 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	722
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	723 // -------------------------------------------------------------------------
409 10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	724 // Exported routine to set calling thread's blocked signal mask
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	725 //
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	726 // Optionally set and return the current thread's signal mask. This is
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	727 // exported to other packages so that they can manipulate the signal
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	728 // mask without necessarily having them delivered (as calling
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	729 // pthread_sigmask() would). Signals can be delivered by calling
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	730 // cyg_posix_deliver_signals().
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	731
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	732 externC void cyg_pthread_sigmask_set (const sigset_t set, sigset_t oset)
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	733 {
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	734 pthread_info *self = pthread_self_info();
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	735
439 3e3067d83e1f * src/signal.cxx: Changed the three routines added in the last nickg parents: 409 diff changeset	736 if( self != NULL )
3e3067d83e1f * src/signal.cxx: Changed the three routines added in the last nickg parents: 409 diff changeset	737 {
3e3067d83e1f * src/signal.cxx: Changed the three routines added in the last nickg parents: 409 diff changeset	738 if( oset != NULL )
3e3067d83e1f * src/signal.cxx: Changed the three routines added in the last nickg parents: 409 diff changeset	739 *oset = self->sigmask;
409 10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	740
439 3e3067d83e1f * src/signal.cxx: Changed the three routines added in the last nickg parents: 409 diff changeset	741 if( set != NULL )
3e3067d83e1f * src/signal.cxx: Changed the three routines added in the last nickg parents: 409 diff changeset	742 self->sigmask = *set;
3e3067d83e1f * src/signal.cxx: Changed the three routines added in the last nickg parents: 409 diff changeset	743 }
409 10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	744 }
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	745
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	746 // -------------------------------------------------------------------------
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	747 // Exported routine to test for any pending signals.
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	748 //
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	749 // This routine tests for any pending undelivered, unmasked
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	750 // signals. If there are any it returns true. This is exported to
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	751 // other packages, such as FILEIO, so that they can detect whether to
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	752 // abort a current API call with an EINTR result.
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	753
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	754 externC cyg_bool cyg_posix_sigpending(void)
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	755 {
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	756 pthread_info *self = pthread_self_info();
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	757
439 3e3067d83e1f * src/signal.cxx: Changed the three routines added in the last nickg parents: 409 diff changeset	758 if( self == NULL )
3e3067d83e1f * src/signal.cxx: Changed the three routines added in the last nickg parents: 409 diff changeset	759 return false;
3e3067d83e1f * src/signal.cxx: Changed the three routines added in the last nickg parents: 409 diff changeset	760
409 10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	761 return ( ((sig_pending \| self->sigpending) & ~self->sigmask) != 0 );
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	762 }
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	763
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	764 // -------------------------------------------------------------------------
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	765 // Exported routine to deliver selected signals
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	766 //
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	767 // This routine optionally sets the given mask and then tries to
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	768 // deliver any pending signals that have been unmasked. This is
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	769 // exported to other packages so that they can cause signals to be
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	770 // delivered at controlled points during execution.
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	771
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	772 externC void cyg_posix_deliver_signals( const sigset_t *mask )
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	773 {
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	774 sigset_t oldmask;
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	775 pthread_info *self = pthread_self_info();
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	776
439 3e3067d83e1f * src/signal.cxx: Changed the three routines added in the last nickg parents: 409 diff changeset	777 if( self != NULL )
409 10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	778 {
439 3e3067d83e1f * src/signal.cxx: Changed the three routines added in the last nickg parents: 409 diff changeset	779 if( mask != NULL )
3e3067d83e1f * src/signal.cxx: Changed the three routines added in the last nickg parents: 409 diff changeset	780 {
3e3067d83e1f * src/signal.cxx: Changed the three routines added in the last nickg parents: 409 diff changeset	781 oldmask = self->sigmask;
3e3067d83e1f * src/signal.cxx: Changed the three routines added in the last nickg parents: 409 diff changeset	782 self->sigmask = *mask;
3e3067d83e1f * src/signal.cxx: Changed the three routines added in the last nickg parents: 409 diff changeset	783 }
514 84fbdcadcb5f * src/signal.cxx (cyg_posix_deliver_signals): silence warning. jlarmour parents: 439 diff changeset	784 else
84fbdcadcb5f * src/signal.cxx (cyg_posix_deliver_signals): silence warning. jlarmour parents: 439 diff changeset	785 oldmask = 0; // silence warning
439 3e3067d83e1f * src/signal.cxx: Changed the three routines added in the last nickg parents: 409 diff changeset	786
3e3067d83e1f * src/signal.cxx: Changed the three routines added in the last nickg parents: 409 diff changeset	787 cyg_deliver_signals();
3e3067d83e1f * src/signal.cxx: Changed the three routines added in the last nickg parents: 409 diff changeset	788
3e3067d83e1f * src/signal.cxx: Changed the three routines added in the last nickg parents: 409 diff changeset	789 if( mask != NULL )
3e3067d83e1f * src/signal.cxx: Changed the three routines added in the last nickg parents: 409 diff changeset	790 self->sigmask = oldmask;
409 10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	791 }
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	792 }
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	793
10e7722168ad * src/signal.cxx: Added three exportable routines that may be used nickg parents: 210 diff changeset	794 // -------------------------------------------------------------------------
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	795 // Get set of pending signals for this process
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	796
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	797 externC int sigpending (sigset_t *set)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	798 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	799 SIGNAL_ENTRY();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	800
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	801 if( set == NULL )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	802 SIGNAL_RETURN(EINVAL);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	803
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	804 pthread_info *self = pthread_self_info();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	805
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	806 *set = self->sigpending \| sig_pending;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	807
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	808 SIGNAL_RETURN(0);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	809 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	810
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	811
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	812 //==========================================================================
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	813 // Wait for or accept signals
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	814
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	815 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	816 // Block signals in set and wait for a signal
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	817
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	818 externC int sigsuspend (const sigset_t *set)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	819 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	820 SIGNAL_ENTRY();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	821
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	822 pthread_info *self = pthread_self_info();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	823
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	824 signal_mutex.lock();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	825
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	826 // Save the old mask and set the current mask to
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	827 // the one supplied.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	828 sigset_t old = self->sigmask;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	829 self->sigmask = *set;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	830
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	831 // Loop until a signal gets delivered
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	832 while( !cyg_deliver_signals() )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	833 signal_sigwait.wait();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	834
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	835 self->sigmask = old;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	836
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	837 signal_mutex.unlock();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	838
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	839 SIGNAL_RETURN(EINTR);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	840 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	841
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	842
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	843 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	844 // Wait for a signal in set to arrive
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	845 // Implement this as a variant on sigtimedwait().
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	846
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	847 externC int sigwait (const sigset_t set, int sig)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	848 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	849 SIGNAL_ENTRY();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	850
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	851 siginfo_t info;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	852
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	853 int ret = sigtimedwait( set, &info, NULL );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	854
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	855 if( ret == -1 )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	856 SIGNAL_RETURN(errno);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	857
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	858 *sig = ret;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	859
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	860 SIGNAL_RETURN(0);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	861 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	862
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	863 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	864 // Do the same as sigwait() except return a siginfo_t object too.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	865 // Implement this as a variant on sigtimedwait().
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	866
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	867 externC int sigwaitinfo (const sigset_t set, siginfo_t info)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	868 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	869 SIGNAL_ENTRY();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	870
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	871 int ret = sigtimedwait( set, info, NULL );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	872
134 d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	873 SIGNAL_RETURN_VALUE(ret);
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	874 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	875
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	876 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	877 // Wait either for a signal in the given set to become pending, or
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	878 // for the timeout to expire. If timeout is NULL, wait for ever.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	879
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	880 externC int sigtimedwait (const sigset_t set, siginfo_t info,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	881 const struct timespec *timeout)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	882 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	883 SIGNAL_ENTRY();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	884
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 143 diff changeset	885 // check for cancellation first.
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 143 diff changeset	886 pthread_testcancel();
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 143 diff changeset	887
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	888 int err = 0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	889 cyg_tick_count ticks;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	890
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	891 if( timeout == NULL ) ticks = 0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	892 else ticks = cyg_timespec_to_ticks( timeout ) +
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	893 Cyg_Clock::real_time_clock->current_value();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	894
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	895 pthread_info *self = pthread_self_info();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	896
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	897 signal_mutex.lock();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	898
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	899 sigset_t todo;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	900
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	901 // Wait for a signal in the set to become pending
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	902 while( (todo = (*set & (sig_pending \| self->sigpending))) == 0 )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	903 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	904 // If timeout is not NULL, do a timed wait on the
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	905 // sigwait condition variable. If it is NULL - wait
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	906 // until we are woken.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	907 if( timeout )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	908 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	909 if( ticks == 0 \|\| !signal_sigwait.wait(ticks) )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	910 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	911 // If the timeout is actually zero, or we have waited and
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	912 // timed out, then we must quit with an error.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	913 err = EAGAIN;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	914 break;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	915 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	916 }
152 f935b880e96c Merge from eCos master repository on 2001-02-14-01:27:14-GMT jlarmour parents: 151 diff changeset	917 else {
f935b880e96c Merge from eCos master repository on 2001-02-14-01:27:14-GMT jlarmour parents: 151 diff changeset	918 if ( !signal_sigwait.wait() ) {
f935b880e96c Merge from eCos master repository on 2001-02-14-01:27:14-GMT jlarmour parents: 151 diff changeset	919 // check we weren't woken up forcibly (e.g. to be cancelled)
f935b880e96c Merge from eCos master repository on 2001-02-14-01:27:14-GMT jlarmour parents: 151 diff changeset	920 // if so, pretend it's an error
f935b880e96c Merge from eCos master repository on 2001-02-14-01:27:14-GMT jlarmour parents: 151 diff changeset	921 err = EAGAIN;
f935b880e96c Merge from eCos master repository on 2001-02-14-01:27:14-GMT jlarmour parents: 151 diff changeset	922 break;
f935b880e96c Merge from eCos master repository on 2001-02-14-01:27:14-GMT jlarmour parents: 151 diff changeset	923 }
f935b880e96c Merge from eCos master repository on 2001-02-14-01:27:14-GMT jlarmour parents: 151 diff changeset	924 }
134 d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	925
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	926 // Special case check for SIGALRM since the fact SIGALRM is masked
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	927 // would have prevented it being set pending in the alarm handler.
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	928 check_sigalarm();
553 489b846deeff * src/time.cxx (alarm_action): Added call to nickg parents: 519 diff changeset	929
489b846deeff * src/time.cxx (alarm_action): Added call to nickg parents: 519 diff changeset	930 cyg_posix_timer_asr(self);
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	931 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	932
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	933 if( err == 0 )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	934 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	935 // There is a signal in the set that is pending: deliver
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	936 // it. todo contains a mask of all the signals that could be
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	937 // delivered now, but we only want to deliver one of them.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	938
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	939 int signo = 0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	940
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	941 // Select the lowest numbered signal from the todo mask
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	942 HAL_LSBIT_INDEX( signo, todo );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	943
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	944 signal_state *ss = &sigstate[signo];
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	945 sigset_t sigbit = 1L<<signo;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	946
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	947 if( (ss->sa.sa_flags & SA_SIGINFO) && (ss->pending != NULL) )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	948 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	949 // If the SA_SIGINFO bit is set, then there
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	950 // will be a signal_info object queued on the
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	951 // pending field.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	952
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	953 signal_info *si = ss->pending->next;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	954 *info = si->si;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	955
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	956 // Remove the head signal_info object from the
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	957 // circular list.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	958 if( ss->pending == si )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	959 ss->pending = NULL;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	960 else
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	961 ss->pending->next = si->next;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	962
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	963 si->next = siginfo_next;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	964 siginfo_next = si;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	965
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	966 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	967 else
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	968 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	969 // Not a queued signal, or there is no signal_info object
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	970 // on the pending queue: fill in info structure with
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	971 // default values.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	972 info->si_signo = signo;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	973 info->si_code = SI_USER;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	974 info->si_value.sival_int = 0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	975 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	976
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	977 // Clear the bit from the pending masks. If the pending
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	978 // queue is not empty, leave the bits set, otherwise clear
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	979 // them.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	980
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	981 if( ss->pending == NULL )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	982 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	983 // Clear the bit in both masks regardless of which
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	984 // one it actually came from. This is cheaper than
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	985 // trying to find out.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	986 sig_pending &= ~sigbit;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	987 self->sigpending &= ~sigbit;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	988 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	989
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	990 // all done
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	991 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	992
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	993 signal_mutex.unlock();
152 f935b880e96c Merge from eCos master repository on 2001-02-14-01:27:14-GMT jlarmour parents: 151 diff changeset	994
f935b880e96c Merge from eCos master repository on 2001-02-14-01:27:14-GMT jlarmour parents: 151 diff changeset	995 pthread_testcancel();
f935b880e96c Merge from eCos master repository on 2001-02-14-01:27:14-GMT jlarmour parents: 151 diff changeset	996
134 d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	997 if (err)
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	998 SIGNAL_RETURN(err);
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	999 else
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	1000 SIGNAL_RETURN_VALUE( info->si_signo );
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1001 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1002
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1003 //==========================================================================
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1004 // alarm, pause and sleep
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1005
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1006 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1007 // Generate SIGALRM after some number of seconds
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1008
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1009 externC unsigned int alarm( unsigned int seconds )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1010 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1011 int res = 0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1012 struct timespec tv;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1013 cyg_tick_count trigger, interval;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1014
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1015 SIGNAL_ENTRY();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1016
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1017 signal_mutex.lock();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1018
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1019 if( sigalrm_armed )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1020 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1021 sigalrm_alarm.disable();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1022
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1023 sigalrm_alarm.get_times( &trigger, &interval );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1024
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1025 // Convert trigger time back to interval
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1026 trigger -= Cyg_Clock::real_time_clock->current_value();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1027
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1028 cyg_ticks_to_timespec( trigger, &tv );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1029
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1030 res = tv.tv_sec;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1031
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1032 sigalrm_armed = false;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1033 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1034
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1035 if( seconds != 0 )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1036 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1037 // Here we know that the sigalrm_alarm is unarmed, set it up
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1038 // to trigger in the required number of seconds.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1039
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1040 tv.tv_sec = seconds;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1041 tv.tv_nsec = 0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1042
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1043 trigger = cyg_timespec_to_ticks( &tv );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1044
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1045 // Convert trigger interval to absolute time
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1046 trigger += Cyg_Clock::real_time_clock->current_value();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1047
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1048 sigalrm_alarm.initialize( trigger, 0 );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1049
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1050 sigalrm_armed = true;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1051 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1052
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1053 signal_mutex.unlock();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1054
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1055 CYG_REPORT_RETVAL(res);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1056
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1057 return res;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1058 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1059
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1060 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1061 // Wait for a signal to be delivered.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1062
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1063 externC int pause( void )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1064 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1065 SIGNAL_ENTRY();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1066
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1067 signal_mutex.lock();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1068
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1069 // Check for any pending signals that can be delivered and
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1070 // if there are none, wait for a signal to be generated
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1071 if( !cyg_deliver_signals() )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1072 signal_sigwait.wait();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1073
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1074 // Now check again for some signals to deliver
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1075 cyg_deliver_signals();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1076
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1077 signal_mutex.unlock();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1078
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1079 SIGNAL_RETURN(EINTR);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1080 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1081
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1082 //==========================================================================
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1083 // Signal sets
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1084
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1085 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1086 // Clear all signals from set.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1087
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1088 externC int sigemptyset (sigset_t *set)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1089 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1090 SIGNAL_ENTRY();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1091
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1092 *set = 0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1093
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1094 SIGNAL_RETURN(0);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1095 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1096
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1097
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1098 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1099 // Set all signals in set.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1100
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1101 externC int sigfillset (sigset_t *set)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1102 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1103 SIGNAL_ENTRY();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1104
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1105 *set = ~0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1106
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1107 SIGNAL_RETURN(0);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1108 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1109
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1110
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1111 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1112 // Add signo to set.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1113
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1114 externC int sigaddset (sigset_t *set, int signo)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1115 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1116 SIGNAL_ENTRY();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1117
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1118 int err = 0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1119
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1120 if( !SIGNAL_VALID(signo) )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1121 err = EINVAL;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1122 else *set \|= 1<<signo;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1123
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1124 SIGNAL_RETURN(err);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1125 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1126
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1127
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1128 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1129 // Remove signo from set.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1130
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1131 externC int sigdelset (sigset_t *set, int signo)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1132 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1133 SIGNAL_ENTRY();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1134
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1135 int err = 0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1136
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1137 if( !SIGNAL_VALID(signo) )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1138 err = EINVAL;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1139 else *set &= ~(1<<signo);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1140
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1141 SIGNAL_RETURN(err);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1142 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1143
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1144
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1145 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1146 // Test whether signo is in set
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1147
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1148 externC int sigismember (const sigset_t *set, int signo)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1149 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1150 SIGNAL_ENTRY();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1151
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1152 int ret = 0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1153
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1154 if( !SIGNAL_VALID(signo) )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1155 SIGNAL_RETURN(EINVAL);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1156
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1157 if( *set & (1<<signo) ) ret = 1;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1158
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1159 CYG_REPORT_RETVAL( ret );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1160 return ret;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1161 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1162
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1163 //==========================================================================
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1164 // ISO C compatibility functions
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1165
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1166 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1167 // Installs a new signal handler for the specified signal, and returns
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1168 // the old handler
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1169
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1170 externC sa_sighandler_t signal(int sig, sa_sighandler_t handler)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1171 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1172 SIGNAL_ENTRY();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1173
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1174 int err;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1175 sa_sighandler_t ret;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1176 struct sigaction new_action;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1177 struct sigaction old_action;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1178
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1179 sigemptyset( &new_action.sa_mask );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1180 new_action.sa_flags = 0;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1181 new_action.sa_handler = handler;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1182
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1183 err = sigaction( sig, &new_action, &old_action );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1184
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1185 if( err < 0 )
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1186 ret = SIG_ERR;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1187 else ret = old_action.sa_handler;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1188
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1189 CYG_REPORT_RETVAL( ret );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1190 return ret;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1191 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1192
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1193 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1194 // raise() - ISO C 7.7.2 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1195 //
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1196 // Raises the signal, which will cause the current signal handler for
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1197 // that signal to be called
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1198
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1199 externC int raise(int sig)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1200 {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1201 return kill( 0, sig );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1202 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1203
130 eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 115 diff changeset	1204 // -------------------------------------------------------------------------
eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 115 diff changeset	1205 // siglongjmp()
eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 115 diff changeset	1206 // Restores signal mask and longjumps.
eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 115 diff changeset	1207
eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 115 diff changeset	1208 __externC void siglongjmp( sigjmp_buf env, int val )
eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 115 diff changeset	1209 {
eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 115 diff changeset	1210 CYG_REPORT_FUNCNAME( "siglongjmp" );
eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 115 diff changeset	1211 CYG_REPORT_FUNCARG2( "&env=%08x, val=%d", &env, val );
eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 115 diff changeset	1212
eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 115 diff changeset	1213 // ISO C says that if we are passed val == 0, then we change it to 1
eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 115 diff changeset	1214 if( val == 0 )
eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 115 diff changeset	1215 val = 1;
eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 115 diff changeset	1216
177 4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 152 diff changeset	1217 if( env[0].__savemask )
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 152 diff changeset	1218 pthread_sigmask( SIG_SETMASK, &env[0].__sigsavemask, NULL );
130 eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 115 diff changeset	1219
eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 115 diff changeset	1220 HAL_REORDER_BARRIER(); // prevent any chance of optimisation re-ordering
177 4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 152 diff changeset	1221 hal_longjmp( env[0].__jmp_buf, val );
130 eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 115 diff changeset	1222 HAL_REORDER_BARRIER(); // prevent any chance of optimisation re-ordering
eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 115 diff changeset	1223
eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 115 diff changeset	1224 #ifdef CYGDBG_USE_ASSERTS
eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 115 diff changeset	1225 CYG_ASSERT( 0, "siglongjmp should not have reached this point!" );
eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 115 diff changeset	1226 #else
eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 115 diff changeset	1227 for (;;)
eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 115 diff changeset	1228 CYG_EMPTY_STATEMENT;
eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 115 diff changeset	1229 #endif
eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 115 diff changeset	1230
eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 115 diff changeset	1231 }
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1232
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 143 diff changeset	1233 #endif // ifdef CYGPKG_POSIX_SIGNALS
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 143 diff changeset	1234
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1235 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: diff changeset	1236 // EOF signal.cxx

Mercurial > ecos

annotate packages/compat/posix/current/src/signal.cxx @ 1781:22d367a6f8f2