source: rtems/c/src/exec/posix/src/semaphorewaitsupp.c @ 799c767

4.104.114.84.95
Last change on this file since 799c767 was 799c767, checked in by Joel Sherrill <joel.sherrill@…>, on Nov 2, 1999 at 6:00:15 PM

Split the POSIX semaphore manager into multiple files.

  • Property mode set to 100644
File size: 1.4 KB
Line 
1/*
2 *  $Id$
3 */
4
5#include <stdarg.h>
6
7#include <errno.h>
8#include <fcntl.h>
9#include <pthread.h>
10#include <semaphore.h>
11#include <limits.h>
12
13#include <rtems/system.h>
14#include <rtems/score/object.h>
15#include <rtems/posix/semaphore.h>
16#include <rtems/posix/time.h>
17#include <rtems/posix/seterr.h>
18
19/*PAGE
20 *
21 *  _POSIX_Semaphore_Wait_support
22 */
23
24int _POSIX_Semaphore_Wait_support(
25  sem_t              *sem,
26  boolean             blocking,
27  Watchdog_Interval   timeout
28)
29{
30  register POSIX_Semaphore_Control *the_semaphore;
31  Objects_Locations                 location;
32  int                               code;
33 
34  the_semaphore = _POSIX_Semaphore_Get( sem, &location );
35  switch ( location ) {
36    case OBJECTS_ERROR:
37      set_errno_and_return_minus_one( EINVAL );
38    case OBJECTS_REMOTE:
39      _Thread_Dispatch();
40      return POSIX_MP_NOT_IMPLEMENTED();
41      set_errno_and_return_minus_one( EINVAL );
42    case OBJECTS_LOCAL:
43      _CORE_semaphore_Seize(
44        &the_semaphore->Semaphore,
45        the_semaphore->Object.id,
46        blocking,
47        timeout
48      );
49      _Thread_Enable_dispatch();
50      code = _Thread_Executing->Wait.return_code;
51      switch (_Thread_Executing->Wait.return_code) {
52        case 1:
53          errno = EAGAIN;
54          code = -1;
55          break;
56        case 3:
57          errno = ETIMEDOUT;
58          code = -1;
59          break;
60      }
61
62      /*return _Thread_Executing->Wait.return_code;*/
63      return code;
64  }
65  return POSIX_BOTTOM_REACHED();
66}
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