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/**
* @file rtems/posix/cond.inl
*/
/* rtems/posix/cond.inl
*
* This include file contains the macro implementation of the private
* inlined routines for POSIX condition variables.
*
* COPYRIGHT (c) 1989-2002.
* 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.com/license/LICENSE.
*
* $Id$
*/
#ifndef __RTEMS_POSIX_CONDITION_VARIABLES_inl
#define __RTEMS_POSIX_CONDITION_VARIABLES_inl
#include <pthread.h>
/*PAGE
*
* _POSIX_Condition_variables_Allocate
*/
#define _POSIX_Condition_variables_Allocate() \
(POSIX_Condition_variables_Control *) \
_Objects_Allocate( &_POSIX_Condition_variables_Information )
/*PAGE
*
* _POSIX_Condition_variables_Free
*
* NOTE: The support macro makes it possible for both to use exactly
* the same code to check for NULL id pointer and
* PTHREAD_COND_INITIALIZER without adding overhead.
*/
#define _POSIX_Condition_variables_Free( _the_condition_variable ) \
_Objects_Free( &_POSIX_Condition_variables_Information, \
&(_the_condition_variable)->Object)
/*PAGE
*
* _POSIX_Condition_variables_Get
*
* NOTE: The support macro makes it possible for both to use exactly
* the same code to check for NULL id pointer and
* PTHREAD_COND_INITIALIZER without adding overhead.
*/
#define ___POSIX_Condition_variables_Get_support( _id, _location ) \
do { \
int _status; \
\
if ( !_id ) { \
*_location = OBJECTS_ERROR; \
return (POSIX_Condition_variables_Control *) 0; \
} \
\
if ( *_id == PTHREAD_COND_INITIALIZER ) { \
/* \
* Do an "auto-create" here. \
*/ \
\
_status = pthread_cond_init( _id, 0 ); \
if ( _status ) { \
*_location = OBJECTS_ERROR; \
return (POSIX_Condition_variables_Control *) 0; \
} \
} \
} while (0)
/* If we find a compiler that doesn't accept static inline functions,
* then this will have to move to a .c file. Until then, we will use this.
*/
static inline POSIX_Condition_variables_Control *_POSIX_Condition_variables_Get (
Objects_Id *id,
Objects_Locations *location
)
{
___POSIX_Condition_variables_Get_support( id, location );
return (POSIX_Condition_variables_Control *)
_Objects_Get( &_POSIX_Condition_variables_Information, *id, location );
}
/*PAGE
*
* _POSIX_Condition_variables_Is_null
*/
#define _POSIX_Condition_variables_Is_null( _the_condition_variable ) \
(!(_the_condition_variable))
#endif
/* end of include file */
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