flash_v2: packages/kernel/current/src/sync/bin

annotate packages/kernel/current/src/sync/bin_sem.cxx @ 1777:c16341b1bac6 default tip

* Added execute permissions to files missed in conversion from CVS

author	alexs
date	Mon, 12 Oct 2009 02:26:09 +0100
parents	e8b69d9c90a6
children

rev	line source
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	1 //==========================================================================
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	2 //
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	3 // sync/bin_sem.cxx
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	4 //
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	5 // Binary semaphore implementation
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	6 //
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	7 //==========================================================================
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 115 diff changeset	8 //####ECOSGPLCOPYRIGHTBEGIN####
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 115 diff changeset	9 // -------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 115 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: 115 diff changeset	11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 115 diff changeset	12 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 115 diff changeset	13 // 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: 115 diff changeset	14 // 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: 115 diff changeset	15 // 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: 115 diff changeset	16 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 115 diff changeset	17 // 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: 115 diff changeset	18 // 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: 115 diff changeset	19 // 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: 115 diff changeset	20 // for more details.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 115 diff changeset	21 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 115 diff changeset	22 // 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: 115 diff changeset	23 // 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: 115 diff changeset	24 // 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: 115 diff changeset	25 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 115 diff changeset	26 // 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: 115 diff changeset	27 // 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: 115 diff changeset	28 // 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: 115 diff changeset	29 // 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: 115 diff changeset	30 // 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: 115 diff changeset	31 // 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: 115 diff changeset	32 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 115 diff changeset	33 // 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: 115 diff changeset	34 // 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: 115 diff changeset	35 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 115 diff changeset	36 // 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	37 // 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: 115 diff changeset	38 // -------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 115 diff changeset	39 //####ECOSGPLCOPYRIGHTEND####
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	40 //==========================================================================
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	41 //#####DESCRIPTIONBEGIN####
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	42 //
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	43 // Author(s): nickg
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	44 // Contributors: nickg
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	45 // Date: 1997-09-24
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	46 // Purpose: Cyg_Binary_Semaphore implementation
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	47 // Description: This file contains the implementations of the binary semaphore
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	48 // class.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	49 //
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	50 //####DESCRIPTIONEND####
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	51 //
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	52 //==========================================================================
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	53
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	54 #include <pkgconf/kernel.h>
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	55
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	56 #include <cyg/kernel/ktypes.h> // base kernel types
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	57 #include <cyg/infra/cyg_trac.h> // tracing macros
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	58 #include <cyg/infra/cyg_ass.h> // assertion macros
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	59 #include <cyg/kernel/instrmnt.h> // instrumentation
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	60
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	61 #include <cyg/kernel/thread.inl> // Cyg_Thread inlines
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	62
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	63 #include <cyg/kernel/sema.hxx> // our header
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	64
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	65 #include <cyg/kernel/sched.inl> // scheduler inlines
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	66
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	67 // -------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	68
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	69 Cyg_Binary_Semaphore::Cyg_Binary_Semaphore (
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	70 cyg_bool init_state
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	71 )
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	72 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	73 state = init_state;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	74 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	75
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	76 // -------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	77
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	78 Cyg_Binary_Semaphore::~Cyg_Binary_Semaphore ( )
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	79 {
1062 e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	80 CYG_ASSERT( queue.empty(), "Destroying semaphore with waiting threads");
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	81 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	82
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	83 // -------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	84
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	85 cyg_bool Cyg_Binary_Semaphore::wait()
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	86 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	87 cyg_bool result = true;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	88 Cyg_Thread *self = Cyg_Thread::self();
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	89
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	90 // Prevent preemption
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	91 Cyg_Scheduler::lock();
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	92
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	93 CYG_INSTRUMENT_BINSEM( CLAIM, this, state );
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	94
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	95 while( !state && result )
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	96 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	97 self->set_sleep_reason( Cyg_Thread::WAIT );
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	98
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	99 self->sleep();
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	100
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	101 queue.enqueue( self );
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	102
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	103 CYG_INSTRUMENT_BINSEM( WAIT, this, 0 );
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	104
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	105 // Allow other threads to run
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	106 Cyg_Scheduler::reschedule();
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	107
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	108 CYG_INSTRUMENT_BINSEM( WOKE, this, state );
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	109
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	110 switch( self->get_wake_reason() )
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	111 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	112 case Cyg_Thread::DESTRUCT:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	113 case Cyg_Thread::BREAK:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	114 result = false;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	115 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	116
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	117 case Cyg_Thread::EXIT:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	118 self->exit();
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	119 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	120
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	121 default:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	122 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	123 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	124
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	125 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	126
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	127 if( result ) state = false;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	128
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	129 // Unlock the scheduler and maybe switch threads
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	130 Cyg_Scheduler::unlock();
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	131
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	132 return result;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	133 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	134
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	135 // -------------------------------------------------------------------------
1062 e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	136 // Wait until the state can be set false or timeout
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	137
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	138 #ifdef CYGFUN_KERNEL_THREADS_TIMER
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	139
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	140 cyg_bool
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	141 Cyg_Binary_Semaphore::wait( cyg_tick_count timeout )
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	142 {
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	143 cyg_bool result = true;
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	144 Cyg_Thread *self = Cyg_Thread::self();
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	145
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	146 // Prevent preemption
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	147 Cyg_Scheduler::lock();
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	148
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	149 CYG_INSTRUMENT_BINSEM( CLAIM, this, state );
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	150
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	151 // Set the timer _once_ outside the loop.
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	152 self->set_timer( timeout, Cyg_Thread::TIMEOUT );
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	153
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	154 // If the timeout is in the past, the wake reason will have been
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	155 // set to something other than NONE already. If the semaphore is
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	156 // not available, set the result false to force an immediate
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	157 // return. If it is available, then go ahead and claim it.
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	158
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	159 if( self->get_wake_reason() != Cyg_Thread::NONE && !state )
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	160 result = false;
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	161
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	162 while ( !state && result ) {
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	163
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	164 // must reset the sleep reason every time
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	165 self->set_sleep_reason( Cyg_Thread::TIMEOUT );
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	166
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	167 self->sleep();
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	168
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	169 queue.enqueue( self );
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	170
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	171 CYG_INSTRUMENT_BINSEM( WAIT, this, 0 );
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	172
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	173 // Allow other threads to run
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	174 Cyg_Scheduler::reschedule();
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	175
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	176 CYG_INSTRUMENT_BINSEM( WOKE, this, state );
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	177
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	178 switch( self->get_wake_reason() )
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	179 {
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	180 case Cyg_Thread::TIMEOUT:
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	181 result = false;
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	182 CYG_INSTRUMENT_BINSEM( TIMEOUT, this, state);
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	183 break;
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	184
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	185 case Cyg_Thread::DESTRUCT:
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	186 case Cyg_Thread::BREAK:
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	187 result = false;
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	188 break;
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	189
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	190 case Cyg_Thread::EXIT:
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	191 self->exit();
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	192 break;
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	193
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	194 default:
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	195 break;
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	196 }
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	197 }
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	198
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	199 // Clear the timeout. It is irrelevant whether the alarm has
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	200 // actually gone off or not.
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	201 self->clear_timer();
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	202
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	203 if( result ) state = false;
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	204
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	205 // Unlock the scheduler and maybe switch threads
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	206 Cyg_Scheduler::unlock();
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	207
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	208 return result;
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	209 }
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	210
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	211 #endif // CYGFUN_KERNEL_THREADS_TIMER
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	212
e8b69d9c90a6 * cdl/kernel.cdl: Added tests/bin_sem3 to list of kernel tests. nickg parents: 210 diff changeset	213 // -------------------------------------------------------------------------
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	214
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	215 cyg_bool Cyg_Binary_Semaphore::trywait()
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	216 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	217 cyg_bool result = true;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	218
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	219 // Prevent preemption
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	220 Cyg_Scheduler::lock();
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	221
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	222 if( state ) state = false;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	223 else result = false;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	224
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	225 CYG_INSTRUMENT_BINSEM( TRY, this, result );
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	226
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	227 // Unlock the scheduler and maybe switch threads
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	228 Cyg_Scheduler::unlock();
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	229
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	230 return result;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	231 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	232
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	233 // -------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	234
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	235 void Cyg_Binary_Semaphore::post()
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	236 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	237 // Prevent preemption
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	238 Cyg_Scheduler::lock();
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	239
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	240 CYG_INSTRUMENT_BINSEM( POST, this, 0 );
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	241
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	242 state = true;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	243
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	244 if( !queue.empty() ) {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	245
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	246 // The queue is non-empty, so grab the next
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	247 // thread from it and wake it up. The waiter
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	248 // will clear the flag.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	249
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	250 Cyg_Thread *thread = queue.dequeue();
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	251
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	252 thread->set_wake_reason( Cyg_Thread::DONE );
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	253
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	254 thread->wake();
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	255
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	256 CYG_INSTRUMENT_BINSEM( WAKE, this, thread );
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	257 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	258
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	259 // Unlock the scheduler and maybe switch threads
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	260 Cyg_Scheduler::unlock();
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	261
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	262 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	263
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	264 // -------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	265
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	266 cyg_bool Cyg_Binary_Semaphore::posted()
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	267 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	268 // This is a single read of the value of state.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	269 // This is already atomic, hence there is no need
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	270 // to lock the scheduler.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	271
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	272 return state;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	273 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	274
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	275 // -------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	276 // EOF sync/bin_sem.cxx

Mercurial > flash_v2

annotate packages/kernel/current/src/sync/bin_sem.cxx @ 1777:c16341b1bac6 default tip