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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [posix/] [src/] [mutexlocksupp.c] - Blame information for rev 593

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1 30 unneback
/*
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 *  $Id: mutexlocksupp.c,v 1.2 2001-09-27 11:59:17 chris Exp $
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 */
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#include <assert.h>
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#include <errno.h>
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#include <pthread.h>
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#include <rtems/system.h>
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#include <rtems/score/coremutex.h>
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#include <rtems/score/watchdog.h>
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#if defined(RTEMS_MULTIPROCESSING)
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#include <rtems/score/mpci.h>
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#endif
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#include <rtems/posix/mutex.h>
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#include <rtems/posix/priority.h>
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#include <rtems/posix/time.h>
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/*PAGE
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 *
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 *  _POSIX_Mutex_Lock_support
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 *
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 *  A support routine which implements guts of the blocking, non-blocking, and
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 *  timed wait version of mutex lock.
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 */
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int _POSIX_Mutex_Lock_support(
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  pthread_mutex_t           *mutex,
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  boolean                    blocking,
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  Watchdog_Interval          timeout
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)
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{
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  register POSIX_Mutex_Control *the_mutex;
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  Objects_Locations             location;
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  the_mutex = _POSIX_Mutex_Get( mutex, &location );
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  switch ( location ) {
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    case OBJECTS_REMOTE:
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#if defined(RTEMS_MULTIPROCESSING)
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      return _POSIX_Mutex_MP_Send_request_packet(
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          POSIX_MUTEX_MP_OBTAIN_REQUEST,
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          *mutex,
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          0,   /* must define the option set */
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          WATCHDOG_NO_TIMEOUT
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      );
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#endif
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    case OBJECTS_ERROR:
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      return EINVAL;
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    case OBJECTS_LOCAL:
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      _CORE_mutex_Seize(
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        &the_mutex->Mutex,
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        the_mutex->Object.id,
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        blocking,
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        timeout
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      );
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      _Thread_Enable_dispatch();
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      return _POSIX_Mutex_From_core_mutex_status(
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        (CORE_mutex_Status) _Thread_Executing->Wait.return_code
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      );
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  }
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  return POSIX_BOTTOM_REACHED();
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}

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