source: rtems/cpukit/posix/src/semgetvalue.c @ aaf6063

4.104.114.84.95
Last change on this file since aaf6063 was f42b726, checked in by Joel Sherrill <joel.sherrill@…>, on 01/24/01 at 14:17:28

2001-01-24 Ralf Corsepius <corsepiu@…>

  • configure.in: Add src/config.h
  • src/Makefile.am: Add INCLUDES += -I. to pickup config.h
  • src/.cvsignore: Add config.h and stamp-h
  • src/*.c: Add config.h support.
  • Property mode set to 100644
File size: 1.0 KB
Line 
1/*
2 *  $Id$
3 */
4
5#if HAVE_CONFIG_H
6#include "config.h"
7#endif
8
9#include <stdarg.h>
10
11#include <errno.h>
12#include <fcntl.h>
13#include <pthread.h>
14#include <semaphore.h>
15#include <limits.h>
16
17#include <rtems/system.h>
18#include <rtems/score/object.h>
19#include <rtems/posix/semaphore.h>
20#include <rtems/posix/time.h>
21#include <rtems/seterr.h>
22
23/*PAGE
24 *
25 *  11.2.8 Get the Value of a Semaphore, P1003.1b-1993, p.229
26 */
27
28int sem_getvalue(
29  sem_t  *sem,
30  int    *sval
31)
32{
33  register POSIX_Semaphore_Control *the_semaphore;
34  Objects_Locations                 location;
35 
36  the_semaphore = _POSIX_Semaphore_Get( sem, &location );
37  switch ( location ) {
38    case OBJECTS_ERROR:
39      set_errno_and_return_minus_one( EINVAL );
40    case OBJECTS_REMOTE:
41      _Thread_Dispatch();
42      return POSIX_MP_NOT_IMPLEMENTED();
43      set_errno_and_return_minus_one( EINVAL );
44    case OBJECTS_LOCAL:
45      *sval = _CORE_semaphore_Get_count( &the_semaphore->Semaphore );
46      _Thread_Enable_dispatch();
47      return 0;
48  }
49  return POSIX_BOTTOM_REACHED();
50}
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