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/**
* @file rtems/posix/mutex.inl
*/
/* rtems/posix/mutex.inl
*
* This include file contains the macro implementation of the private
* inlined routines for POSIX mutex's.
*
* COPYRIGHT (c) 1989-1999.
* 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_MUTEX_inl
#define __RTEMS_POSIX_MUTEX_inl
/*PAGE
*
* _POSIX_Mutex_Allocate
*/
#define _POSIX_Mutex_Allocate() \
(POSIX_Mutex_Control *) _Objects_Allocate( &_POSIX_Mutex_Information )
/*PAGE
*
* _POSIX_Mutex_Free
*/
#define _POSIX_Mutex_Free( _the_mutex ) \
_Objects_Free( &_POSIX_Mutex_Information, &(_the_mutex)->Object )
/*PAGE
*
* _POSIX_Mutex_Get
*
* NOTE: The support macro makes it possible for both to use exactly
* the same code to check for NULL id pointer and
* PTHREAD_MUTEX_INITIALIZER without adding overhead.
*/
#define ___POSIX_Mutex_Get_support( _id, _location ) \
do { \
int _status; \
\
if ( !_id ) { \
*_location = OBJECTS_ERROR; \
return (POSIX_Mutex_Control *) 0; \
} \
\
if ( *_id == PTHREAD_MUTEX_INITIALIZER ) { \
/* \
* Do an "auto-create" here. \
*/ \
\
_status = pthread_mutex_init( _id, 0 ); \
if ( _status ) { \
*_location = OBJECTS_ERROR; \
return (POSIX_Mutex_Control *) 0; \
} \
} \
} while (0)
static POSIX_Mutex_Control * _POSIX_Mutex_Get(
Objects_Id *id,
Objects_Locations *location
)
{
___POSIX_Mutex_Get_support( id, location );
return (POSIX_Mutex_Control *)
_Objects_Get( &_POSIX_Mutex_Information, *id, location );
}
static POSIX_Mutex_Control *_POSIX_Mutex_Get_interrupt_disable(
Objects_Id *id,
Objects_Locations *location,
ISR_Level *level
)
{
___POSIX_Mutex_Get_support( id, location );
return (POSIX_Mutex_Control *)
_Objects_Get_isr_disable( &_POSIX_Mutex_Information, *id, location, level );
}
/*PAGE
*
* _POSIX_Mutex_Is_null
*/
#define _POSIX_Mutex_Is_null( _the_mutex ) \
(!(_the_mutex))
#endif
/* end of include file */
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