nand-ecoscentric: packages/kernel/current/include/sched.hxx annotate

annotate packages/kernel/current/include/sched.hxx @ 3403:8c8767bb9a62 default tip

devs/nand/micron_mt29: Remove defunct references (in comments) to mt29f2g08_oob_ecc.

author	Ross Younger <wry@ecoscentric.com>
date	Sun, 18 Jan 2015 17:59:01 +1300
parents	74dbf4c3f2e1
children

rev	line source
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	1 #ifndef CYGONCE_KERNEL_SCHED_HXX
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	2 #define CYGONCE_KERNEL_SCHED_HXX
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	3
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	4 //==========================================================================
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	5 //
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	6 // sched.hxx
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	7 //
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	8 // Scheduler class declaration(s)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	9 //
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	10 //==========================================================================
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2167 diff changeset	11 // ####ECOSGPLCOPYRIGHTBEGIN####
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2167 diff changeset	12 // -------------------------------------------
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2167 diff changeset	13 // This file is part of eCos, the Embedded Configurable Operating System.
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2167 diff changeset	14 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 177 diff changeset	15 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2167 diff changeset	16 // eCos is free software; you can redistribute it and/or modify it under
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2167 diff changeset	17 // the terms of the GNU General Public License as published by the Free
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2167 diff changeset	18 // Software Foundation; either version 2 or (at your option) any later
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2167 diff changeset	19 // version.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 177 diff changeset	20 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2167 diff changeset	21 // eCos is distributed in the hope that it will be useful, but WITHOUT
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2167 diff changeset	22 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2167 diff changeset	23 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2167 diff changeset	24 // for more details.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 177 diff changeset	25 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2167 diff changeset	26 // You should have received a copy of the GNU General Public License
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2167 diff changeset	27 // along with eCos; if not, write to the Free Software Foundation, Inc.,
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2167 diff changeset	28 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 177 diff changeset	29 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2167 diff changeset	30 // As a special exception, if other files instantiate templates or use
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2167 diff changeset	31 // macros or inline functions from this file, or you compile this file
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2167 diff changeset	32 // and link it with other works to produce a work based on this file,
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2167 diff changeset	33 // this file does not by itself cause the resulting work to be covered by
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2167 diff changeset	34 // the GNU General Public License. However the source code for this file
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2167 diff changeset	35 // must still be made available in accordance with section (3) of the GNU
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2167 diff changeset	36 // General Public License v2.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 177 diff changeset	37 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2167 diff changeset	38 // This exception does not invalidate any other reasons why a work based
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2167 diff changeset	39 // on this file might be covered by the GNU General Public License.
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2167 diff changeset	40 // -------------------------------------------
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 2167 diff changeset	41 // ####ECOSGPLCOPYRIGHTEND####
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	42 //==========================================================================
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	43 //#####DESCRIPTIONBEGIN####
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	44 //
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	45 // Author(s): nickg
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	46 // Contributors: nickg
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	47 // Date: 1997-09-09
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	48 // Purpose: Define Scheduler class interfaces
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	49 // Description: These class definitions supply the internal API
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	50 // used to scheduler threads.
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	51 // Usage: #include <cyg/kernel/sched.hxx>
0 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 //####DESCRIPTIONEND####
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	54 //
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
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	57 #include <cyg/kernel/ktypes.h>
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
177 4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	60 #include <cyg/kernel/smp.hxx> // SMP support
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	61
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	62 // -------------------------------------------------------------------------
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	63 // Miscellaneous types
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	64
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	65 #ifdef CYGSEM_KERNEL_SCHED_ASR_SUPPORT
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	66
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	67 typedef void Cyg_ASR( CYG_ADDRWORD data ); // ASR type signature
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	68
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	69 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	70
177 4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	71 __externC void cyg_scheduler_set_need_reschedule();
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	72
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	73 // -------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	74 // Scheduler base class. This defines stuff that is needed by the
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	75 // specific scheduler implementation. Each scheduler comprises three
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	76 // classes: Cyg_Scheduler_Base, Cyg_Scheduler_Implementation which
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	77 // inherits from it and Cyg_Scheduler which inherits from _it_ in turn.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	78
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	79 class Cyg_Scheduler_Base
177 4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	80 : public Cyg_Scheduler_SchedLock
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 friend class Cyg_HardwareThread;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	83 friend class Cyg_SchedThread;
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 protected:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	86 // The following variables are implicit in the API, but are
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	87 // not publically visible.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	88
177 4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	89 // Current running thread
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	90 static Cyg_Thread * volatile current_thread[CYGNUM_KERNEL_CPU_MAX]
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	91 CYGBLD_ANNOTATE_VARIABLE_SCHED;
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	92
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	93 // Set when reschedule needed
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	94 static volatile cyg_bool need_reschedule[CYGNUM_KERNEL_CPU_MAX]
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	95 CYGBLD_ANNOTATE_VARIABLE_SCHED;
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	96
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	97 // Count of number of thread switches
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	98 static volatile cyg_ucount32 thread_switches[CYGNUM_KERNEL_CPU_MAX]
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	99 CYGBLD_ANNOTATE_VARIABLE_SCHED;
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	100
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	101 public:
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	102
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	103 // return a pointer to the current thread
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	104 static Cyg_Thread *get_current_thread();
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	105
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	106 // Set current thread pointer
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	107 static void set_current_thread(Cyg_Thread *thread);
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	108 static void set_current_thread(Cyg_Thread *thread, HAL_SMP_CPU_TYPE cpu);
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	109
177 4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	110 // Set need_reschedule flag
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	111 static void set_need_reschedule();
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	112 static void set_need_reschedule(Cyg_Thread *thread);
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	113
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	114 // Get need_reschedule flag
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	115 static cyg_bool get_need_reschedule();
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	116
177 4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	117 // Return current value of lock
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	118 static cyg_ucount32 get_sched_lock();
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	119
177 4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	120 // Clear need_reschedule flag
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	121 static void clear_need_reschedule();
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	122
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	123 // Return current number of thread switches
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	124 static cyg_ucount32 get_thread_switches();
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	125
0 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
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 // Include the scheduler implementation header
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	130
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	131 #include CYGPRI_KERNEL_SCHED_IMPL_HXX
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	132
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	133 // Do some checking that we have a consistent universe.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	134
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	135 #ifdef CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	136 # ifndef CYGIMP_THREAD_PRIORITY
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	137 # error Priority inversion protocols will not work without priorities!!!
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	138 # endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	139 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	140
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	141 // -------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	142 // Scheduler class. This is the public scheduler interface seen by the
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	143 // rest of the kernel.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	144
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	145 class Cyg_Scheduler
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	146 : public Cyg_Scheduler_Implementation
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	147 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	148 friend class Cyg_Thread;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	149
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	150 // This function is the actual implementation of the unlock
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	151 // function. The unlock() later is an inline shell that deals
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	152 // with the common case.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	153
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	154 static void unlock_inner(cyg_uint32 new_lock = 0);
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	155
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	156 public:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	157
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	158 CYGDBG_DEFINE_CHECK_THIS
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	159
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	160 // The following API functions are common to all scheduler
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	161 // implementations.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	162
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	163 // claim the preemption lock
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	164 static void lock();
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	165
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	166 // release the preemption lock and possibly reschedule
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	167 static void unlock();
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	168
124 0ec04793409a Merge from eCos master repository on 2000-09-11-03:00:13-BST jlarmour parents: 115 diff changeset	169 // release and reclaim the lock atomically, keeping the old
0ec04793409a Merge from eCos master repository on 2000-09-11-03:00:13-BST jlarmour parents: 115 diff changeset	170 // value on restart
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	171 static void reschedule();
124 0ec04793409a Merge from eCos master repository on 2000-09-11-03:00:13-BST jlarmour parents: 115 diff changeset	172
0ec04793409a Merge from eCos master repository on 2000-09-11-03:00:13-BST jlarmour parents: 115 diff changeset	173 // decrement the lock but also look for a reschedule opportunity
0ec04793409a Merge from eCos master repository on 2000-09-11-03:00:13-BST jlarmour parents: 115 diff changeset	174 static void unlock_reschedule();
0ec04793409a Merge from eCos master repository on 2000-09-11-03:00:13-BST jlarmour parents: 115 diff changeset	175
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	176 // release the preemption lock without rescheduling
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	177 static void unlock_simple();
2117 5d7f57fd1729 * src/sched/sched.cxx: nickg parents: 210 diff changeset	178
5d7f57fd1729 * src/sched/sched.cxx: nickg parents: 210 diff changeset	179 // perform thread startup housekeeping
2167 27ecc11e99bd 2006-03-27 Marco Cruz <marco@daruma.com.br> jlarmour parents: 2117 diff changeset	180 void thread_entry( Cyg_Thread *thread );
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	181
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	182 // Start execution of the scheduler
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 177 diff changeset	183 static void start() CYGBLD_ATTRIB_NORET;
177 4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	184
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	185 // Start execution of the scheduler on the current CPU
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 177 diff changeset	186 static void start_cpu() CYGBLD_ATTRIB_NORET;
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	187
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	188 // The only scheduler instance should be this one...
177 4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	189 static Cyg_Scheduler scheduler CYGBLD_ANNOTATE_VARIABLE_SCHED;
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	190
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	191 };
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	192
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	193 // -------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	194 // This class encapsulates the scheduling abstractions in a thread.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	195 // Cyg_SchedThread is included as a base class of Cyg_Thread. The actual
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	196 // implementation of the abstractions is in Cyg_SchedThread_Implementation
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	197 // so this class has little to do.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	198
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	199 class Cyg_SchedThread
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	200 : public Cyg_SchedThread_Implementation
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	201 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	202 friend class Cyg_ThreadQueue_Implementation;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	203 friend class Cyg_Scheduler_Implementation;
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	204 friend class Cyg_Scheduler;
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	205
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	206 Cyg_ThreadQueue *queue;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	207
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	208
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	209 public:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	210
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	211 Cyg_SchedThread(Cyg_Thread *thread, CYG_ADDRWORD sched_info);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	212
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	213 // Return current queue pointer
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_ThreadQueue *get_current_queue();
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 // Remove this thread from current queue
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	218 void remove();
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	219
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	220 #ifdef CYGSEM_KERNEL_SCHED_ASR_SUPPORT
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	221
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	222 // ASR support.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	223 // An ASR is an Asynchronous Service Routine. When set pending it
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	224 // is called when the thread exits the scheduler. ASRs are mainly
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	225 // used by compatibility subsystems, such as POSIX, to implement
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	226 // such things as thread cancellation and signal delivery.
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	227
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	228 private:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	229
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 124 diff changeset	230 volatile cyg_ucount32 asr_inhibit; // If > 0, blocks calls to ASRs
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	231
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 124 diff changeset	232 volatile cyg_bool asr_pending; // If true, this thread's ASR should be called.
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	233
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	234 #ifdef CYGSEM_KERNEL_SCHED_ASR_GLOBAL
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	235 static
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	236 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	237 Cyg_ASR *asr; // ASR function
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	238 #ifdef CYGSEM_KERNEL_SCHED_ASR_DATA_GLOBAL
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	239 static
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	240 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	241 CYG_ADDRWORD asr_data; // ASR data pointer
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	242
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	243 // Default ASR function
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	244 static void asr_default(CYG_ADDRWORD data);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	245
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	246 public:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	247
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	248 // Public interface to ASR mechanism
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	249
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	250 // Set, clear and get inhibit flag.
128 0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 124 diff changeset	251 inline void set_asr_inhibit() { asr_inhibit++; }
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 124 diff changeset	252 inline void clear_asr_inhibit() { asr_inhibit--; }
0c2b7be0d798 Merge from eCos master repository on 2000-10-12-08:46:24-BST jlarmour parents: 124 diff changeset	253 inline cyg_ucount32 get_asr_inhibit() { return asr_inhibit; }
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	254
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	255 // Set and get pending flag. The flag is only cleared when the
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	256 // ASR is called.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	257 inline void set_asr_pending() { asr_pending = true; }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	258 inline cyg_bool get_asr_pending() { return asr_pending; }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	259
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	260 // Set a new ASR, returning the old one.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	261 void set_asr( Cyg_ASR *new_asr, CYG_ADDRWORD new_data,
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	262 Cyg_ASR *old_asr, CYG_ADDRWORD old_data);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	263
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	264 // Clear the ASR function back to the default.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	265 void clear_asr();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	266
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	267 #else
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	268
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	269 public:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	270
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	271 // Even when we do not have ASRs enabled, we keep these functions
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	272 // available. This avoids excessive ifdefs in the rest of the
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	273 // kernel code.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	274 inline void set_asr_inhibit() { }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	275 inline void clear_asr_inhibit() { }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	276
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	277 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	278
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	279 #ifdef CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	280
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	281 private:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	282
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	283 // For all priority inversion protocols we need to keep track of how
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 2 diff changeset	284 // many mutexes we have locked, including one which we are waiting to
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 2 diff changeset	285 // lock, because we can inherit priority while sleeping just prior to
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 2 diff changeset	286 // wakeup.
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	287
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	288 cyg_count32 mutex_count;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	289
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	290 protected:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	291 // These are implementation functions that are common to all protocols.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	292
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	293 // Inherit the given priority. If thread is non-NULL the priority is
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	294 // being inherited from it, otherwise it has come from the mutex.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	295 void set_inherited_priority( cyg_priority pri, Cyg_Thread *thread = 0 );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	296
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	297 // Relay the priority of the ex-owner thread or from the queue if it
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	298 // has a higher priority than ours.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	299 void relay_inherited_priority( Cyg_Thread ex_owner, Cyg_ThreadQueue pqueue);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	300
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	301 // Lose priority inheritance
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	302 void clear_inherited_priority();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	303
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	304 public:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	305 // Count and uncount the number of mutexes held by
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	306 // this thread.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	307 void count_mutex() { mutex_count++; };
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	308 void uncount_mutex() { mutex_count--; };
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	309
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	310 #if defined(CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_SIMPLE)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	311
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	312 protected:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	313
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	314 // The simple priority inversion protocols simply needs
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	315 // somewhere to store the base priority of the current thread.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	316
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	317 cyg_priority original_priority; // our original priority
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	318
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	319 cyg_bool priority_inherited; // have we inherited?
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	320
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	321 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	322
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	323 #ifdef CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_INHERIT
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	324
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	325 public:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	326
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	327 // Inherit the priority of the provided thread if it
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	328 // has higher priority than this.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	329 void inherit_priority( Cyg_Thread *thread);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	330
62 7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 2 diff changeset	331 // Relay the priority of the ex-owner thread or from the queue if it
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 2 diff changeset	332 // has a higher priority than ours.
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 2 diff changeset	333 void relay_priority( Cyg_Thread ex_owner, Cyg_ThreadQueue pqueue);
7a6ac9edc838 Merge from eCos master repository on 2000-01-24-19:43:49-GMT jlarmour parents: 2 diff changeset	334
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	335 // Lose priority inheritance
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	336 void disinherit_priority();
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	337
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	338 #endif
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	339
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	340 #ifdef CYGSEM_KERNEL_SYNCH_MUTEX_PRIORITY_INVERSION_PROTOCOL_CEILING
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	341
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	342 public:
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	343
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	344 // Set the priority of this thread to the given ceiling.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	345 void set_priority_ceiling( cyg_priority pri );
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	346
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	347 // Clear the ceiling, if necessary.
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	348 void clear_priority_ceiling();
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	349
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	350 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	351
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 66 diff changeset	352 #endif
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	353
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	354 };
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	355
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	356 // -------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	357 // Simple inline accessor functions
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	358
177 4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	359 inline Cyg_Thread *Cyg_Scheduler_Base::get_current_thread()
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	360 {
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	361 return current_thread[CYG_KERNEL_CPU_THIS()];
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	362 }
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	363
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	364 inline void Cyg_Scheduler_Base::set_current_thread(Cyg_Thread *thread )
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	365 {
177 4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	366 current_thread[CYG_KERNEL_CPU_THIS()] = thread;
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	367 }
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	368
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	369 inline void Cyg_Scheduler_Base::set_current_thread(Cyg_Thread *thread,
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	370 HAL_SMP_CPU_TYPE cpu)
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	371 {
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	372 current_thread[cpu] = thread;
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	373 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	374
177 4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	375 inline cyg_bool Cyg_Scheduler_Base::get_need_reschedule()
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	376 {
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	377 return need_reschedule[CYG_KERNEL_CPU_THIS()];
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	378 }
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	379
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	380 inline void Cyg_Scheduler_Base::set_need_reschedule()
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	381 {
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	382 need_reschedule[CYG_KERNEL_CPU_THIS()] = true;
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	383 }
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	384
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	385 inline void Cyg_Scheduler_Base::set_need_reschedule(Cyg_Thread *thread)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	386 {
177 4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	387 need_reschedule[CYG_KERNEL_CPU_THIS()] = true;
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	388 }
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	389
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	390 inline void Cyg_Scheduler_Base::clear_need_reschedule()
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	391 {
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	392 need_reschedule[CYG_KERNEL_CPU_THIS()] = false;
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	393 }
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	394
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	395 inline cyg_ucount32 Cyg_Scheduler_Base::get_sched_lock()
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	396 {
4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	397 return Cyg_Scheduler_SchedLock::get_sched_lock();
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	398 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	399
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	400 // Return current number of thread switches
177 4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	401 inline cyg_ucount32 Cyg_Scheduler_Base::get_thread_switches()
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	402 {
177 4c750ce71ae3 Merge from eCos master repository on 2001-08-10-19:22:57-BST jlarmour parents: 132 diff changeset	403 return thread_switches[CYG_KERNEL_CPU_THIS()];
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	404 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	405
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	406 // Return current queue pointer
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	407 inline Cyg_ThreadQueue *Cyg_SchedThread::get_current_queue()
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	408 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	409 return queue;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	410 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	411
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	412 // -------------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	413 #endif // ifndef __SCHED_HXX__
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	414 // EOF sched.hxx

Mercurial > nand-ecoscentric

annotate packages/kernel/current/include/sched.hxx @ 3403:8c8767bb9a62 default tip