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Diffstat (limited to 'c/src/exec/score/inline/rtems/score/coremutex.inl')
| -rw-r--r-- | c/src/exec/score/inline/rtems/score/coremutex.inl | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/c/src/exec/score/inline/rtems/score/coremutex.inl b/c/src/exec/score/inline/rtems/score/coremutex.inl deleted file mode 100644 index b57b2ef2f4..0000000000 --- a/c/src/exec/score/inline/rtems/score/coremutex.inl +++ /dev/null @@ -1,196 +0,0 @@ -/* inline/coremutex.inl - * - * This include file contains all of the inlined routines associated - * with the CORE mutexes. - * - * 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.OARcorp.com/rtems/license.html. - * - * $Id$ - */ - -#ifndef __INLINE_CORE_MUTEX_inl -#define __INLINE_CORE_MUTEX_inl - -/*PAGE - * - * _CORE_mutex_Is_locked - * - * DESCRIPTION: - * - * This routine returns TRUE if the mutex specified is locked and FALSE - * otherwise. - */ - -RTEMS_INLINE_ROUTINE boolean _CORE_mutex_Is_locked( - CORE_mutex_Control *the_mutex -) -{ - return the_mutex->lock == CORE_MUTEX_LOCKED; -} - -/*PAGE - * - * _CORE_mutex_Is_fifo - * - * DESCRIPTION: - * - * This routine returns TRUE if the mutex's wait discipline is FIFO and FALSE - * otherwise. - */ - -RTEMS_INLINE_ROUTINE boolean _CORE_mutex_Is_fifo( - CORE_mutex_Attributes *the_attribute -) -{ - return the_attribute->discipline == CORE_MUTEX_DISCIPLINES_FIFO; -} - -/*PAGE - * - * _CORE_mutex_Is_priority - * - * DESCRIPTION: - * - * This routine returns TRUE if the mutex's wait discipline is PRIORITY and - * FALSE otherwise. - */ - -RTEMS_INLINE_ROUTINE boolean _CORE_mutex_Is_priority( - CORE_mutex_Attributes *the_attribute -) -{ - return the_attribute->discipline == CORE_MUTEX_DISCIPLINES_PRIORITY; -} - -/*PAGE - * - * _CORE_mutex_Is_inherit_priority - * - * DESCRIPTION: - * - * This routine returns TRUE if the mutex's wait discipline is - * INHERIT_PRIORITY and FALSE otherwise. - */ - -RTEMS_INLINE_ROUTINE boolean _CORE_mutex_Is_inherit_priority( - CORE_mutex_Attributes *the_attribute -) -{ - return the_attribute->discipline == CORE_MUTEX_DISCIPLINES_PRIORITY_INHERIT; -} - -/*PAGE - * - * _CORE_mutex_Is_priority_ceiling - * - * DESCRIPTION: - * - * This routine returns TRUE if the mutex's wait discipline is - * PRIORITY_CEILING and FALSE otherwise. - */ - -RTEMS_INLINE_ROUTINE boolean _CORE_mutex_Is_priority_ceiling( - CORE_mutex_Attributes *the_attribute -) -{ - return the_attribute->discipline == CORE_MUTEX_DISCIPLINES_PRIORITY_CEILING; -} - -/*PAGE - * - * _CORE_mutex_Seize_interrupt_trylock - * - * DESCRIPTION: - * - * This routine returns 0 if "trylock" can resolve whether or not the - * mutex is immediately obtained or there was an error attempting to - * get it. It returns 1 to indicate that the caller cannot obtain - * the mutex and will have to block to do so. - * - * NOTE: There is no MACRO version of this routine. - * A body is in coremutexseize.c that is duplicated - * from the .inl by hand. - */ - -RTEMS_INLINE_ROUTINE int _CORE_mutex_Seize_interrupt_trylock( - CORE_mutex_Control *the_mutex, - ISR_Level *level_p -) -{ - Thread_Control *executing; - ISR_Level level = *level_p; - - /* disabled when you get here */ - - executing = _Thread_Executing; - executing->Wait.return_code = CORE_MUTEX_STATUS_SUCCESSFUL; - if ( !_CORE_mutex_Is_locked( the_mutex ) ) { - the_mutex->lock = CORE_MUTEX_LOCKED; - the_mutex->holder = executing; - the_mutex->holder_id = executing->Object.id; - the_mutex->nest_count = 1; - if ( _CORE_mutex_Is_inherit_priority( &the_mutex->Attributes ) || - _CORE_mutex_Is_priority_ceiling( &the_mutex->Attributes ) ) - executing->resource_count++; - if ( !_CORE_mutex_Is_priority_ceiling( &the_mutex->Attributes ) ) { - _ISR_Enable( level ); - return 0; - } - /* else must be CORE_MUTEX_DISCIPLINES_PRIORITY_CEILING */ - { - Priority_Control ceiling; - Priority_Control current; - - ceiling = the_mutex->Attributes.priority_ceiling; - current = executing->current_priority; - if ( current == ceiling ) { - _ISR_Enable( level ); - return 0; - } - if ( current > ceiling ) { - _Thread_Disable_dispatch(); - _ISR_Enable( level ); - _Thread_Change_priority( - the_mutex->holder, - the_mutex->Attributes.priority_ceiling, - FALSE - ); - _Thread_Enable_dispatch(); - return 0; - } - /* if ( current < ceiling ) */ { - executing->Wait.return_code = CORE_MUTEX_STATUS_CEILING_VIOLATED; - the_mutex->nest_count = 0; /* undo locking above */ - executing->resource_count--; /* undo locking above */ - _ISR_Enable( level ); - return 0; - } - } - return 0; - } - - if ( _Thread_Is_executing( the_mutex->holder ) ) { - switch ( the_mutex->Attributes.lock_nesting_behavior ) { - case CORE_MUTEX_NESTING_ACQUIRES: - the_mutex->nest_count++; - _ISR_Enable( level ); - return 0; - case CORE_MUTEX_NESTING_IS_ERROR: - executing->Wait.return_code = CORE_MUTEX_STATUS_NESTING_NOT_ALLOWED; - _ISR_Enable( level ); - return 0; - case CORE_MUTEX_NESTING_BLOCKS: - break; - } - } - - return 1; -} - -#endif -/* end of include file */ |