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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [posix/] [src/] [semclose.c] - Blame information for rev 173

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1 30 unneback
/*
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 *  $Id: semclose.c,v 1.2 2001-09-27 11:59:17 chris Exp $
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 */
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#include <stdarg.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <pthread.h>
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#include <semaphore.h>
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#include <limits.h>
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#include <rtems/system.h>
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#include <rtems/score/object.h>
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#include <rtems/posix/semaphore.h>
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#include <rtems/posix/time.h>
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#include <rtems/posix/seterr.h>
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/*PAGE
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 *
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 *  sem_close
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 *
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 *  Routine to close a semaphore that has been opened or initialized.
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 *
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 *  11.2.4 Close a Named Semaphore, P1003.1b-1993, p.224
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 */
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int sem_close(
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  sem_t *sem
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)
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{
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  register POSIX_Semaphore_Control *the_semaphore;
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  Objects_Locations                 location;
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  the_semaphore = _POSIX_Semaphore_Get( sem, &location );
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  switch ( location ) {
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    case OBJECTS_ERROR:
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      set_errno_and_return_minus_one( EINVAL );
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    case OBJECTS_REMOTE:
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      _Thread_Dispatch();
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      return POSIX_MP_NOT_IMPLEMENTED();
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      set_errno_and_return_minus_one( EINVAL );
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    case OBJECTS_LOCAL:
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      the_semaphore->open_count -= 1;
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      _POSIX_Semaphore_Delete( the_semaphore );
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      _Thread_Enable_dispatch();
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      return 0;
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  }
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  return POSIX_BOTTOM_REACHED();
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}

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