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/**
* @file
*
* @brief Initialize a Condition Variable
* @ingroup POSIXAPI
*/
/*
* COPYRIGHT (c) 1989-2007.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/posix/condimpl.h>
#include <rtems/posix/posixapi.h>
RTEMS_STATIC_ASSERT(
offsetof( POSIX_Condition_variables_Control, flags )
== offsetof( pthread_cond_t, _flags ),
POSIX_CONDITION_VARIABLES_CONTROL_FLAGS
);
RTEMS_STATIC_ASSERT(
offsetof( POSIX_Condition_variables_Control, mutex )
== offsetof( pthread_cond_t, _mutex ),
POSIX_CONDITION_VARIABLES_CONTROL_COUNT
);
RTEMS_STATIC_ASSERT(
offsetof( POSIX_Condition_variables_Control, Queue )
== offsetof( pthread_cond_t, _Queue ),
POSIX_CONDITION_VARIABLES_CONTROL_QUEUE
);
RTEMS_STATIC_ASSERT(
sizeof( POSIX_Condition_variables_Control ) == sizeof( pthread_cond_t ),
POSIX_CONDITION_VARIABLES_CONTROL_SIZE
);
/**
* 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;
the_cond = _POSIX_Condition_variables_Get( cond );
if ( the_cond == NULL ) {
return EINVAL;
}
if ( attr == NULL ) {
attr = &_POSIX_Condition_variables_Default_attributes;
}
if ( !attr->is_initialized ) {
return EINVAL;
}
if ( !_POSIX_Is_valid_pshared( attr->process_shared ) ) {
return EINVAL;
}
_POSIX_Condition_variables_Initialize( the_cond, attr );
return 0;
}
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