source: rtems/cpukit/rtems/src/semdelete.c @ 3692095

Last change on this file since 3692095 was 3692095, checked in by Sebastian Huber <sebastian.huber@…>, on May 30, 2016 at 8:41:22 AM

rtems: Move MrsP semaphore operations

Move MrsP semaphore operations to a less prominent location. Fix field
name.

  • Property mode set to 100644
File size: 3.4 KB
Line 
1/**
2 *  @file
3 *
4 *  @brief RTEMS Delete Semaphore
5 *  @ingroup ClassicSem
6 */
7
8/*
9 *  COPYRIGHT (c) 1989-2014.
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.org/license/LICENSE.
15 */
16
17#if HAVE_CONFIG_H
18#include "config.h"
19#endif
20
21#include <rtems/rtems/semimpl.h>
22#include <rtems/rtems/statusimpl.h>
23
24rtems_status_code rtems_semaphore_delete(
25  rtems_id   id
26)
27{
28  Semaphore_Control    *the_semaphore;
29  Thread_queue_Context  queue_context;
30  Status_Control        status;
31
32  _Objects_Allocator_lock();
33  the_semaphore = _Semaphore_Get( id, &queue_context );
34
35  if ( the_semaphore == NULL ) {
36    _Objects_Allocator_unlock();
37
38#if defined(RTEMS_MULTIPROCESSING)
39    if ( _Semaphore_MP_Is_remote( id ) ) {
40      return RTEMS_ILLEGAL_ON_REMOTE_OBJECT;
41    }
42#endif
43
44    return RTEMS_INVALID_ID;
45  }
46
47  _Thread_queue_Acquire_critical(
48    &the_semaphore->Core_control.Wait_queue,
49    &queue_context.Lock_context
50  );
51
52  switch ( the_semaphore->variant ) {
53    case SEMAPHORE_VARIANT_MUTEX_INHERIT_PRIORITY:
54    case SEMAPHORE_VARIANT_MUTEX_PRIORITY_CEILING:
55    case SEMAPHORE_VARIANT_MUTEX_NO_PROTOCOL:
56      if (
57        _CORE_mutex_Is_locked(
58          &the_semaphore->Core_control.Mutex.Recursive.Mutex
59        )
60      ) {
61        status = STATUS_RESOURCE_IN_USE;
62      } else {
63        status = STATUS_SUCCESSFUL;
64      }
65
66      break;
67#if defined(RTEMS_SMP)
68    case SEMAPHORE_VARIANT_MRSP:
69      status = _MRSP_Can_destroy( &the_semaphore->Core_control.MRSP );
70      break;
71#endif
72    default:
73      _Assert(
74        the_semaphore->variant == SEMAPHORE_VARIANT_SIMPLE_BINARY
75          || the_semaphore->variant == SEMAPHORE_VARIANT_COUNTING
76      );
77      status = STATUS_SUCCESSFUL;
78      break;
79  }
80
81  if ( status != STATUS_SUCCESSFUL ) {
82    _Thread_queue_Release(
83      &the_semaphore->Core_control.Wait_queue,
84      &queue_context.Lock_context
85    );
86    _Objects_Allocator_unlock();
87    return _Status_Get( status );
88  }
89
90  _Objects_Close( &_Semaphore_Information, &the_semaphore->Object );
91
92  switch ( the_semaphore->variant ) {
93#if defined(RTEMS_SMP)
94    case SEMAPHORE_VARIANT_MRSP:
95      _MRSP_Destroy( &the_semaphore->Core_control.MRSP, &queue_context );
96      break;
97#endif
98    default:
99      _Assert(
100        the_semaphore->variant == SEMAPHORE_VARIANT_MUTEX_INHERIT_PRIORITY
101          || the_semaphore->variant == SEMAPHORE_VARIANT_MUTEX_PRIORITY_CEILING
102          || the_semaphore->variant == SEMAPHORE_VARIANT_MUTEX_NO_PROTOCOL
103          || the_semaphore->variant == SEMAPHORE_VARIANT_SIMPLE_BINARY
104          || the_semaphore->variant == SEMAPHORE_VARIANT_COUNTING
105      );
106      _Thread_queue_Flush_critical(
107        &the_semaphore->Core_control.Wait_queue.Queue,
108        _Semaphore_Get_operations( the_semaphore ),
109        _Thread_queue_Flush_status_object_was_deleted,
110        &queue_context
111      );
112      _Thread_queue_Destroy( &the_semaphore->Core_control.Wait_queue );
113      break;
114  }
115
116#if defined(RTEMS_MULTIPROCESSING)
117  if ( the_semaphore->is_global ) {
118
119    _Objects_MP_Close( &_Semaphore_Information, id );
120
121    _Semaphore_MP_Send_process_packet(
122      SEMAPHORE_MP_ANNOUNCE_DELETE,
123      id,
124      0,                         /* Not used */
125      0                          /* Not used */
126    );
127  }
128#endif
129
130  _Semaphore_Free( the_semaphore );
131  _Objects_Allocator_unlock();
132  return RTEMS_SUCCESSFUL;
133}
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