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Diffstat (limited to 'cpukit/posix/inline/rtems/posix/mutex.inl')
-rw-r--r-- | cpukit/posix/inline/rtems/posix/mutex.inl | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/cpukit/posix/inline/rtems/posix/mutex.inl b/cpukit/posix/inline/rtems/posix/mutex.inl new file mode 100644 index 0000000000..cfe9df4b2f --- /dev/null +++ b/cpukit/posix/inline/rtems/posix/mutex.inl @@ -0,0 +1,118 @@ +/** + * @file rtems/posix/mutex.inl + */ + +/* rtems/posix/mutex.inl + * + * This include file contains the static inline 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 + */ + +RTEMS_INLINE_ROUTINE POSIX_Mutex_Control *_POSIX_Mutex_Allocate( void ) +{ + return (POSIX_Mutex_Control *) _Objects_Allocate( &_POSIX_Mutex_Information ); +} + +/*PAGE + * + * _POSIX_Mutex_Free + */ + +RTEMS_INLINE_ROUTINE void _POSIX_Mutex_Free ( + POSIX_Mutex_Control *the_mutex +) +{ + _Objects_Free( &_POSIX_Mutex_Information, &the_mutex->Object ); +} + +/*PAGE + * + * _POSIX_Mutex_Get_support + * + * 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( (pthread_mutex_t *)_id, 0 ); \ + if ( _status ) { \ + *_location = OBJECTS_ERROR; \ + return (POSIX_Mutex_Control *) 0; \ + } \ + } \ + } while (0) + +RTEMS_INLINE_ROUTINE POSIX_Mutex_Control *_POSIX_Mutex_Get ( + pthread_mutex_t *mutex, + Objects_Locations *location +) +{ + Objects_Id *id = (Objects_Id *)mutex; + + ___POSIX_Mutex_Get_support( id, location ); + + return (POSIX_Mutex_Control *) + _Objects_Get( &_POSIX_Mutex_Information, *id, location ); +} + +RTEMS_INLINE_ROUTINE POSIX_Mutex_Control *_POSIX_Mutex_Get_interrupt_disable ( + pthread_mutex_t *mutex, + Objects_Locations *location, + ISR_Level *level +) +{ + Objects_Id *id = (Objects_Id *)mutex; + + ___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 + */ + +RTEMS_INLINE_ROUTINE boolean _POSIX_Mutex_Is_null ( + POSIX_Mutex_Control *the_mutex +) +{ + return !the_mutex; +} + +#endif +/* end of include file */ + |