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/*
* $Id$
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <assert.h>
#include <errno.h>
#include <pthread.h>
#include <rtems/system.h>
#include <rtems/score/coremutex.h>
#include <rtems/score/watchdog.h>
#if defined(RTEMS_MULTIPROCESSING)
#include <rtems/score/mpci.h>
#endif
#include <rtems/posix/mutex.h>
#include <rtems/posix/priority.h>
#include <rtems/posix/time.h>
/*PAGE
*
* _POSIX_Mutex_Lock_support
*
* A support routine which implements guts of the blocking, non-blocking, and
* timed wait version of mutex lock.
*/
int _POSIX_Mutex_Lock_support(
pthread_mutex_t *mutex,
boolean blocking,
Watchdog_Interval timeout
)
{
register POSIX_Mutex_Control *the_mutex;
Objects_Locations location;
ISR_Level level;
the_mutex = _POSIX_Mutex_Get_interrupt_disable( mutex, &location, &level );
switch ( location ) {
case OBJECTS_REMOTE:
#if defined(RTEMS_MULTIPROCESSING)
return _POSIX_Mutex_MP_Send_request_packet(
POSIX_MUTEX_MP_OBTAIN_REQUEST,
*mutex,
0, /* must define the option set */
WATCHDOG_NO_TIMEOUT
);
#endif
case OBJECTS_ERROR:
return EINVAL;
case OBJECTS_LOCAL:
_CORE_mutex_Seize(
&the_mutex->Mutex,
the_mutex->Object.id,
blocking,
timeout,
level
);
return _POSIX_Mutex_From_core_mutex_status(
(CORE_mutex_Status) _Thread_Executing->Wait.return_code
);
}
return POSIX_BOTTOM_REACHED();
}
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