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/*
* $Id$
*/
#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
*
* 11.4.2 Initializing and Destroying a Condition Variable,
* P1003.1c/Draft 10, p. 87
*/
int pthread_cond_init(
pthread_cond_t *cond,
const pthread_condattr_t *attr
)
{
POSIX_Condition_variables_Control *the_cond;
const pthread_condattr_t *the_attr;
if ( attr ) the_attr = attr;
else the_attr = &_POSIX_Condition_variables_Default_attributes;
/*
* XXX: Be careful about attributes when global!!!
*/
if ( the_attr->process_shared == PTHREAD_PROCESS_SHARED )
return POSIX_MP_NOT_IMPLEMENTED();
if ( !the_attr->is_initialized )
return EINVAL;
_Thread_Disable_dispatch();
the_cond = _POSIX_Condition_variables_Allocate();
if ( !the_cond ) {
_Thread_Enable_dispatch();
return ENOMEM;
}
#if defined(RTEMS_MULTIPROCESSING)
if ( the_attr->process_shared == PTHREAD_PROCESS_SHARED &&
!( _Objects_MP_Allocate_and_open( &_POSIX_Condition_variables_Information,
0, the_cond->Object.id, FALSE ) ) ) {
_POSIX_Condition_variables_Free( the_cond );
_Thread_Enable_dispatch();
return EAGAIN;
}
#endif
the_cond->process_shared = the_attr->process_shared;
the_cond->Mutex = POSIX_CONDITION_VARIABLES_NO_MUTEX;
/* XXX some more initialization might need to go here */
_Thread_queue_Initialize(
&the_cond->Wait_queue,
OBJECTS_POSIX_CONDITION_VARIABLES,
THREAD_QUEUE_DISCIPLINE_FIFO,
STATES_WAITING_FOR_CONDITION_VARIABLE,
#if defined(RTEMS_MULTIPROCESSING)
_POSIX_Condition_variables_MP_Send_extract_proxy,
#else
NULL,
#endif
ETIMEDOUT
);
_Objects_Open(
&_POSIX_Condition_variables_Information,
&the_cond->Object,
0
);
*cond = the_cond->Object.id;
#if defined(RTEMS_MULTIPROCESSING)
if ( the_attr->process_shared == PTHREAD_PROCESS_SHARED )
_POSIX_Condition_variables_MP_Send_process_packet(
POSIX_CONDITION_VARIABLES_MP_ANNOUNCE_CREATE,
the_cond->Object.id,
0, /* Name not used */
0 /* Not used */
);
#endif
_Thread_Enable_dispatch();
return 0;
}
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