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/*

 *  condsignalsupp.c,v 1.2 2001/01/24 14:17:28 joel Exp

 */

#if HAVE_CONFIG_H

#include "config.h"

#endif

#include <pthread.h>

#include <errno.h>

#include <rtems/system.h>

#include <rtems/score/object.h>

#include <rtems/score/states.h>

#include <rtems/score/watchdog.h>

#include <rtems/posix/cond.h>

#include <rtems/posix/time.h>

#include <rtems/posix/mutex.h>

/*PAGE

 *

 *  _POSIX_Condition_variables_Signal_support

 *

 *  A support routine which implements guts of the broadcast and single task

 *  wake up version of the "signal" operation.

 */

int _POSIX_Condition_variables_Signal_support(

  pthread_cond_t            *cond,

  boolean                    is_broadcast

)

{

  register POSIX_Condition_variables_Control *the_cond;

  Objects_Locations                           location;

  Thread_Control                             *the_thread;

  the_cond = _POSIX_Condition_variables_Get( cond, &location );

  switch ( location ) {

    case OBJECTS_REMOTE:

#if defined(RTEMS_MULTIPROCESSING)

      _Thread_Dispatch();

      return POSIX_MP_NOT_IMPLEMENTED();

      return EINVAL;

#endif

    case OBJECTS_ERROR:

      return EINVAL;

    case OBJECTS_LOCAL:

      do {

        the_thread = _Thread_queue_Dequeue( &the_cond->Wait_queue );

        if ( !the_thread )

          the_cond->Mutex = POSIX_CONDITION_VARIABLES_NO_MUTEX;

      } while ( is_broadcast && the_thread );

      _Thread_Enable_dispatch();

      return 0;

  }

  return POSIX_BOTTOM_REACHED();

}