source: rtems/cpukit/rtems/src/semflush.c @ e980b219

4.104.114.84.95
Last change on this file since e980b219 was e980b219, checked in by Joel Sherrill <joel.sherrill@…>, on 05/06/04 at 19:21:40

2004-05-06 Joel Sherrill <joel@…>

PR 618/rtems

  • rtems/include/rtems/rtems/status.h, rtems/src/clockget.c, rtems/src/clockset.c, rtems/src/dpmemcreate.c, rtems/src/dpmemexternal2internal.c, rtems/src/dpmeminternal2external.c, rtems/src/eventmp.c, rtems/src/eventreceive.c, rtems/src/eventsend.c, rtems/src/msgqbroadcast.c, rtems/src/msgqcreate.c, rtems/src/msgqflush.c, rtems/src/msgqgetnumberpending.c, rtems/src/msgqreceive.c, rtems/src/msgqsubmit.c, rtems/src/partcreate.c, rtems/src/partdelete.c, rtems/src/partgetbuffer.c, rtems/src/ratemoncancel.c, rtems/src/ratemoncreate.c, rtems/src/ratemondelete.c, rtems/src/ratemongetstatus.c, rtems/src/ratemonident.c, rtems/src/ratemonperiod.c, rtems/src/regioncreate.c, rtems/src/regiondelete.c, rtems/src/regionextend.c, rtems/src/regiongetsegment.c, rtems/src/regiongetsegmentsize.c, rtems/src/regionreturnsegment.c, rtems/src/semcreate.c, rtems/src/semdelete.c, rtems/src/semflush.c, rtems/src/semident.c, rtems/src/taskcreate.c, rtems/src/taskgetnote.c, rtems/src/taskmode.c, rtems/src/taskrestart.c, rtems/src/taskresume.c, rtems/src/tasksetnote.c, rtems/src/tasksuspend.c, rtems/src/taskvariableadd.c, rtems/src/taskvariabledelete.c, rtems/src/taskvariableget.c, rtems/src/taskwakewhen.c, rtems/src/timercreate.c, rtems/src/timerdelete.c, rtems/src/timerfireafter.c, rtems/src/timerfirewhen.c, rtems/src/timerserverfireafter.c, rtems/src/timerserverfirewhen.c, score/include/rtems/score/object.h, score/src/coretodvalidate.c, score/src/objectnametoid.c: Add NULL checks.
  • Property mode set to 100644
File size: 2.4 KB
Line 
1/*
2 *  rtems_semaphore_flush
3 *
4 *  DESCRIPTION:
5 *
6 *  This package is the implementation of the flush directive
7 *  of the Semaphore Manager.
8 *
9 *  COPYRIGHT (c) 1989-1999.
10 *  On-Line Applications Research Corporation (OAR).
11 *
12 *  The license and distribution terms for this file may be
13 *  found in the file LICENSE in this distribution or at
14 *  http://www.rtems.com/license/LICENSE.
15 *
16 *  $Id$
17 */
18
19#include <rtems/system.h>
20#include <rtems/rtems/status.h>
21#include <rtems/rtems/support.h>
22#include <rtems/rtems/attr.h>
23#include <rtems/score/isr.h>
24#include <rtems/score/object.h>
25#include <rtems/rtems/options.h>
26#include <rtems/rtems/sem.h>
27#include <rtems/score/coremutex.h>
28#include <rtems/score/coresem.h>
29#include <rtems/score/states.h>
30#include <rtems/score/thread.h>
31#include <rtems/score/threadq.h>
32#if defined(RTEMS_MULTIPROCESSING)
33#include <rtems/score/mpci.h>
34#endif
35#include <rtems/score/sysstate.h>
36
37#include <rtems/score/interr.h>
38
39/*PAGE
40 *
41 *  rtems_semaphore_flush
42 *
43 *  This directive allows a thread to flush the threads
44 *  pending on the semaphore.
45 *
46 *  Input parameters:
47 *    id         - semaphore id
48 *
49 *  Output parameters:
50 *    RTEMS_SUCCESSFUL - if successful
51 *    error code       - if unsuccessful
52 */
53
54#if defined(RTEMS_MULTIPROCESSING)
55#define SEND_OBJECT_WAS_DELETED _Semaphore_MP_Send_object_was_deleted
56#else
57#define SEND_OBJECT_WAS_DELETED NULL
58#endif
59
60rtems_status_code rtems_semaphore_flush(
61  Objects_Id      id
62)
63{
64  register Semaphore_Control *the_semaphore;
65  Objects_Locations           location;
66
67  the_semaphore = _Semaphore_Get( id, &location );
68  switch ( location ) {
69
70    case OBJECTS_REMOTE:
71#if defined(RTEMS_MULTIPROCESSING)
72      _Thread_Dispatch();
73      return RTEMS_ILLEGAL_ON_REMOTE_OBJECT;
74#endif
75
76    case OBJECTS_ERROR:
77      return RTEMS_INVALID_ID;
78
79    case OBJECTS_LOCAL:
80      if ( !_Attributes_Is_counting_semaphore(the_semaphore->attribute_set) ) {
81        _CORE_mutex_Flush(
82          &the_semaphore->Core_control.mutex,
83          SEND_OBJECT_WAS_DELETED,
84          CORE_MUTEX_STATUS_UNSATISFIED_NOWAIT
85        );
86      } else {
87        _CORE_semaphore_Flush(
88          &the_semaphore->Core_control.semaphore,
89          SEND_OBJECT_WAS_DELETED,
90          CORE_SEMAPHORE_STATUS_UNSATISFIED_NOWAIT
91        );
92      }
93      _Thread_Enable_dispatch();
94      return RTEMS_SUCCESSFUL;
95  }
96
97  return RTEMS_INTERNAL_ERROR;   /* unreached - only to remove warnings */
98}
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