source: rtems/cpukit/rtems/src/taskmode.c @ 7a39c88

Last change on this file since 7a39c88 was 7a39c88, checked in by Joel Sherrill <joel.sherrill@…>, on 09/04/03 at 18:47:18

2003-09-04 Joel Sherrill <joel@…>

  • include/rtems.h, include/rtems/rtems/asr.h, include/rtems/rtems/attr.h, include/rtems/rtems/cache.h, include/rtems/rtems/clock.h, include/rtems/rtems/config.h, include/rtems/rtems/dpmem.h, include/rtems/rtems/event.h, include/rtems/rtems/eventmp.h, include/rtems/rtems/eventset.h, include/rtems/rtems/intr.h, include/rtems/rtems/message.h, include/rtems/rtems/modes.h, include/rtems/rtems/mp.h, include/rtems/rtems/msgmp.h, include/rtems/rtems/options.h, include/rtems/rtems/part.h, include/rtems/rtems/partmp.h, include/rtems/rtems/ratemon.h, include/rtems/rtems/region.h, include/rtems/rtems/regionmp.h, include/rtems/rtems/rtemsapi.h, include/rtems/rtems/sem.h, include/rtems/rtems/semmp.h, include/rtems/rtems/signal.h, include/rtems/rtems/signalmp.h, include/rtems/rtems/status.h, include/rtems/rtems/support.h, include/rtems/rtems/taskmp.h, include/rtems/rtems/tasks.h, include/rtems/rtems/timer.h, include/rtems/rtems/types.h, inline/rtems/rtems/asr.inl, inline/rtems/rtems/attr.inl, inline/rtems/rtems/dpmem.inl, inline/rtems/rtems/event.inl, inline/rtems/rtems/eventset.inl, inline/rtems/rtems/message.inl, inline/rtems/rtems/modes.inl, inline/rtems/rtems/options.inl, inline/rtems/rtems/part.inl, inline/rtems/rtems/ratemon.inl, inline/rtems/rtems/region.inl, inline/rtems/rtems/sem.inl, inline/rtems/rtems/status.inl, inline/rtems/rtems/support.inl, inline/rtems/rtems/tasks.inl, inline/rtems/rtems/timer.inl, macros/rtems/rtems/asr.inl, macros/rtems/rtems/attr.inl, macros/rtems/rtems/dpmem.inl, macros/rtems/rtems/event.inl, macros/rtems/rtems/eventset.inl, macros/rtems/rtems/message.inl, macros/rtems/rtems/modes.inl, macros/rtems/rtems/options.inl, macros/rtems/rtems/part.inl, macros/rtems/rtems/ratemon.inl, macros/rtems/rtems/region.inl, macros/rtems/rtems/sem.inl, macros/rtems/rtems/status.inl, macros/rtems/rtems/support.inl, macros/rtems/rtems/tasks.inl, macros/rtems/rtems/timer.inl, src/attr.c, src/clockget.c, src/clockset.c, src/clocktick.c, src/dpmem.c, src/dpmemcreate.c, src/dpmemdelete.c, src/dpmemexternal2internal.c, src/dpmemident.c, src/dpmeminternal2external.c, src/event.c, src/eventmp.c, src/eventreceive.c, src/eventseize.c, src/eventsend.c, src/eventsurrender.c, src/eventtimeout.c, src/intr.c, src/intrbody.c, src/intrcatch.c, src/mp.c, src/msg.c, src/msgmp.c, src/msgqallocate.c, src/msgqbroadcast.c, src/msgqcreate.c, src/msgqdelete.c, src/msgqflush.c, src/msgqgetnumberpending.c, src/msgqident.c, src/msgqreceive.c, src/msgqsend.c, src/msgqsubmit.c, src/msgqtranslatereturncode.c, src/msgqurgent.c, src/part.c, src/partcreate.c, src/partdelete.c, src/partgetbuffer.c, src/partident.c, src/partmp.c, src/partreturnbuffer.c, src/ratemon.c, src/ratemoncancel.c, src/ratemoncreate.c, src/ratemondelete.c, src/ratemongetstatus.c, src/ratemonident.c, src/ratemonperiod.c, src/ratemontimeout.c, src/region.c, src/regioncreate.c, src/regiondelete.c, src/regionextend.c, src/regiongetinfo.c, src/regiongetsegment.c, src/regiongetsegmentsize.c, src/regionident.c, src/regionmp.c, src/regionreturnsegment.c, src/rtclock.c, src/rtemstimer.c, src/sem.c, src/semcreate.c, src/semdelete.c, src/semflush.c, src/semident.c, src/semmp.c, src/semobtain.c, src/semrelease.c, src/semtranslatereturncode.c, src/signal.c, src/signalcatch.c, src/signalmp.c, src/signalsend.c, src/taskcreate.c, src/taskdelete.c, src/taskgetnote.c, src/taskident.c, src/taskinitusers.c, src/taskissuspended.c, src/taskmode.c, src/taskmp.c, src/taskrestart.c, src/taskresume.c, src/tasks.c, src/tasksetnote.c, src/tasksetpriority.c, src/taskstart.c, src/tasksuspend.c, src/taskvariableadd.c, src/taskvariabledelete.c, src/taskvariableget.c, src/taskwakeafter.c, src/taskwakewhen.c, src/timercancel.c, src/timercreate.c, src/timerdelete.c, src/timerfireafter.c, src/timerfirewhen.c, src/timergetinfo.c, src/timerident.c, src/timerreset.c, src/timerserver.c, src/timerserverfireafter.c, src/timerserverfirewhen.c: URL for license changed.
  • Property mode set to 100644
File size: 3.1 KB
Line 
1/*
2 *  RTEMS Task Manager
3 *
4 *
5 *  COPYRIGHT (c) 1989-1999.
6 *  On-Line Applications Research Corporation (OAR).
7 *
8 *  The license and distribution terms for this file may be
9 *  found in the file LICENSE in this distribution or at
10 *  http://www.rtems.com/license/LICENSE.
11 *
12 *  $Id$
13 */
14
15#include <rtems/system.h>
16#include <rtems/rtems/status.h>
17#include <rtems/rtems/support.h>
18#include <rtems/rtems/modes.h>
19#include <rtems/score/object.h>
20#include <rtems/score/stack.h>
21#include <rtems/score/states.h>
22#include <rtems/rtems/tasks.h>
23#include <rtems/score/thread.h>
24#include <rtems/score/threadq.h>
25#include <rtems/score/tod.h>
26#include <rtems/score/userext.h>
27#include <rtems/score/wkspace.h>
28#include <rtems/score/apiext.h>
29#include <rtems/score/sysstate.h>
30
31/*PAGE
32 *
33 *  rtems_task_mode
34 *
35 *  This directive enables and disables several modes of
36 *  execution for the requesting thread.
37 *
38 *  Input parameters:
39 *    mode_set          - new mode
40 *    mask              - mask
41 *    previous_mode_set - address of previous mode set
42 *
43 *  Output:
44 *    *previous_mode_set - previous mode set
45 *     always return RTEMS_SUCCESSFUL;
46 */
47
48rtems_status_code rtems_task_mode(
49  rtems_mode  mode_set,
50  rtems_mode  mask,
51  rtems_mode *previous_mode_set
52)
53{
54  Thread_Control     *executing;
55  RTEMS_API_Control  *api;
56  ASR_Information    *asr;
57  boolean             is_asr_enabled = FALSE;
58  boolean             needs_asr_dispatching = FALSE;
59  rtems_mode          old_mode;
60
61  executing     = _Thread_Executing;
62  api = executing->API_Extensions[ THREAD_API_RTEMS ];
63  asr = &api->Signal;
64
65  old_mode  = (executing->is_preemptible) ? RTEMS_PREEMPT : RTEMS_NO_PREEMPT;
66
67  if ( executing->budget_algorithm == THREAD_CPU_BUDGET_ALGORITHM_NONE )
68    old_mode |= RTEMS_NO_TIMESLICE;
69  else
70    old_mode |= RTEMS_TIMESLICE;
71
72  old_mode |= (asr->is_enabled) ? RTEMS_ASR : RTEMS_NO_ASR;
73  old_mode |= _ISR_Get_level();
74
75  *previous_mode_set = old_mode;
76
77  /*
78   *  These are generic thread scheduling characteristics.
79   */
80
81  if ( mask & RTEMS_PREEMPT_MASK )
82    executing->is_preemptible = _Modes_Is_preempt(mode_set) ? TRUE : FALSE;
83
84  if ( mask & RTEMS_TIMESLICE_MASK ) {
85    if ( _Modes_Is_timeslice(mode_set) )
86      executing->budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_RESET_TIMESLICE;
87    else
88      executing->budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_NONE;
89  }
90
91  /*
92   *  Set the new interrupt level
93   */
94
95  if ( mask & RTEMS_INTERRUPT_MASK )
96    _Modes_Set_interrupt_level( mode_set );
97
98  /*
99   *  This is specific to the RTEMS API
100   */
101
102  is_asr_enabled = FALSE;
103  needs_asr_dispatching = FALSE;
104
105  if ( mask & RTEMS_ASR_MASK ) {
106    is_asr_enabled = _Modes_Is_asr_disabled( mode_set ) ? FALSE : TRUE;
107    if ( is_asr_enabled != asr->is_enabled ) {
108      asr->is_enabled = is_asr_enabled;
109      _ASR_Swap_signals( asr );
110      if ( _ASR_Are_signals_pending( asr ) ) {
111        needs_asr_dispatching = TRUE;
112        executing->do_post_task_switch_extension = TRUE;
113      }
114    }
115  }
116
117  if ( _System_state_Is_up(_System_state_Current) )
118    if ( _Thread_Evaluate_mode() || needs_asr_dispatching )
119      _Thread_Dispatch();
120
121  return RTEMS_SUCCESSFUL;
122}
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