source: rtems/cpukit/rtems/src/taskvariabledelete.c @ dc4bd19

Last change on this file since dc4bd19 was 17bbadd, checked in by Joel Sherrill <joel.sherrill@…>, on 05/06/04 at 19:20:04

2004-05-06 Joel Sherrill <joel@…>

PR 618/rtems

  • include/rtems/rtems/status.h, src/clockget.c, src/clockset.c, src/dpmemcreate.c, src/dpmemexternal2internal.c, src/dpmeminternal2external.c, src/eventmp.c, src/eventreceive.c, src/eventsend.c, src/msgqbroadcast.c, src/msgqcreate.c, src/msgqflush.c, src/msgqgetnumberpending.c, src/msgqreceive.c, src/msgqsubmit.c, src/partcreate.c, src/partdelete.c, src/partgetbuffer.c, src/ratemoncancel.c, src/ratemoncreate.c, src/ratemondelete.c, src/ratemongetstatus.c, src/ratemonident.c, src/ratemonperiod.c, src/regioncreate.c, src/regiondelete.c, src/regionextend.c, src/regiongetsegment.c, src/regiongetsegmentsize.c, src/regionreturnsegment.c, src/semcreate.c, src/semdelete.c, src/semflush.c, src/semident.c, src/taskcreate.c, src/taskgetnote.c, src/taskmode.c, src/taskrestart.c, src/taskresume.c, src/tasksetnote.c, src/tasksuspend.c, src/taskvariableadd.c, src/taskvariabledelete.c, src/taskvariableget.c, src/taskwakewhen.c, src/timercreate.c, src/timerdelete.c, src/timerfireafter.c, src/timerfirewhen.c, src/timerserverfireafter.c, src/timerserverfirewhen.c: Add NULL checks.
  • Property mode set to 100644
File size: 1.7 KB
Line 
1/*
2 *  rtems_task_variable_delete - Delete a per-task variable
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/tasks.h>
17#include <rtems/score/wkspace.h>
18
19/*
20 *  rtems_task_variable_delete
21 *
22 *  This directive removes a task variable.
23 */
24
25rtems_status_code rtems_task_variable_delete(
26  rtems_id  tid,
27  void    **ptr
28)
29{
30  Thread_Control        *the_thread;
31  Objects_Locations      location;
32  rtems_task_variable_t *tvp, *prev;
33
34  if ( !ptr )
35    return RTEMS_INVALID_ADDRESS;
36
37  prev = NULL;
38
39  the_thread = _Thread_Get (tid, &location);
40  switch (location) {
41  case OBJECTS_REMOTE:
42#if defined(RTEMS_MULTIPROCESSING)
43    _Thread_Dispatch();
44    return RTEMS_ILLEGAL_ON_REMOTE_OBJECT;
45#endif
46
47  case OBJECTS_ERROR:
48    return RTEMS_INVALID_ID;
49
50  default:
51    return RTEMS_INTERNAL_ERROR;
52
53  case OBJECTS_LOCAL:
54    tvp = the_thread->task_variables;
55    while (tvp) {
56      if (tvp->ptr == ptr) {
57        if (prev) prev->next = tvp->next;
58        else      the_thread->task_variables = tvp->next;
59        if (tvp->dtor)
60          (*tvp->dtor)(*tvp->ptr);
61        if (_Thread_Is_executing(the_thread))
62          *tvp->ptr = tvp->gval;
63        _Workspace_Free(tvp);
64        _Thread_Enable_dispatch();
65        return RTEMS_SUCCESSFUL;
66      }
67      prev = tvp;
68      tvp = tvp->next;
69    }
70    _Thread_Enable_dispatch();
71    return RTEMS_INVALID_ADDRESS;
72  }
73
74  return RTEMS_INTERNAL_ERROR;   /* unreached - only to remove warnings */
75}
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