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[/] [or1k/] [trunk/] [rtems-20020807/] [cpukit/] [score/] [macros/] [rtems/] [score/] [coresem.inl] - Blame information for rev 1765

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1 1026 ivang
/*  macros/coresem.h
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 *
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 *  This include file contains all of the inlined routines associated
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 *  with core semaphores.
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 *
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 *  COPYRIGHT (c) 1989-1999.
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 *  On-Line Applications Research Corporation (OAR).
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 *
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 *  The license and distribution terms for this file may be
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 *  found in the file LICENSE in this distribution or at
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 *  http://www.OARcorp.com/rtems/license.html.
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 *
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 *  coresem.inl,v 1.8 2001/05/25 16:59:28 joel Exp
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 */
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#ifndef __MACROS_CORE_SEMAPHORE_h
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#define __MACROS_CORE_SEMAPHORE_h
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/*PAGE
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 *
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 *  _CORE_semaphore_Is_priority
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 *
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 */
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#define _CORE_semaphore_Is_priority( _the_attribute ) \
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  ( (_the_attribute)->discipline == CORE_SEMAPHORE_DISCIPLINES_PRIORITY )
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/*PAGE
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 *
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 *  _CORE_semaphore_Get_count
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 *
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 */
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#define _CORE_semaphore_Get_count( _the_semaphore ) \
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  ( (_the_semaphore)->count )
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/*PAGE
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 *
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 *  _CORE_semaphore_Seize_isr_disable
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 */
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#define _CORE_semaphore_Seize_isr_disable( \
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  _the_semaphore, _id, _wait, _timeout, _level_p) \
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{ \
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  Thread_Control *executing; \
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  ISR_Level       level = *(_level_p); \
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 \
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  /* disabled when you get here */ \
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 \
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  executing = _Thread_Executing; \
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  executing->Wait.return_code = CORE_SEMAPHORE_STATUS_SUCCESSFUL; \
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  if ( (_the_semaphore)->count != 0 ) { \
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    (_the_semaphore)->count -= 1; \
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    _ISR_Enable( level ); \
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  } else if ( !(_wait) ) { \
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    _ISR_Enable( level ); \
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    executing->Wait.return_code = CORE_SEMAPHORE_STATUS_UNSATISFIED_NOWAIT; \
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  } else { \
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    _Thread_Disable_dispatch(); \
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    _Thread_queue_Enter_critical_section( &(_the_semaphore)->Wait_queue ); \
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    executing->Wait.queue          = &(_the_semaphore)->Wait_queue; \
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    executing->Wait.id             = (_id); \
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    _ISR_Enable( level ); \
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 \
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    _Thread_queue_Enqueue( &(_the_semaphore)->Wait_queue, (_timeout) ); \
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    _Thread_Enable_dispatch(); \
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  } \
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}
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#endif
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/* end of include file */

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