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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [itron/] [inline/] [rtems/] [itron/] [semaphore.inl] - Blame information for rev 173

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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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 *  $Id: semaphore.inl,v 1.2 2001-09-27 11:59:13 chris Exp $
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 */
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#ifndef __ITRON_SEMAPHORE_inl_
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#define __ITRON_SEMAPHORE_inl_
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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 *  _ITRON_Semaphore_Allocate
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 *
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 *  DESCRIPTION:
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 *
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 *  This routine allocates the semaphore associated with the specified
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 *  semaphore ID from the pool of inactive semaphores.
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 *
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 *  Input parameters:
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 *    semid   - id of semaphore to allocate
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 *    status  - pointer to status variable
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 *
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 *  Output parameters:
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 *    returns - pointer to the semaphore control block
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 *    *status - status
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 */
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RTEMS_INLINE_ROUTINE ITRON_Semaphore_Control *_ITRON_Semaphore_Allocate(
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  ID   semid
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)
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{
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  return (ITRON_Semaphore_Control *)_ITRON_Objects_Allocate_by_index(
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    &_ITRON_Semaphore_Information,
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    semid,
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    sizeof(ITRON_Semaphore_Control)
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  );
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}
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/*
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 *  _ITRON_Semaphore_Clarify_allocation_id_error
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 *
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 *  This function is invoked when an object allocation ID error
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 *  occurs to determine the specific ITRON error code to return.
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 */
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#define _ITRON_Semaphore_Clarify_allocation_id_error( _id ) \
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  _ITRON_Objects_Clarify_allocation_id_error( \
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      &_ITRON_Semaphore_Information, (_id) )
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/*
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 *  _ITRON_Semaphore_Clarify_get_id_error
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 *
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 *  This function is invoked when an object get ID error
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 *  occurs to determine the specific ITRON error code to return.
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 */
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#define _ITRON_Semaphore_Clarify_get_id_error( _id ) \
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 _ITRON_Objects_Clarify_get_id_error( &_ITRON_Semaphore_Information, (_id) )
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/*
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 *  _ITRON_Semaphore_Free
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 *
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 *  DESCRIPTION:
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 *
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 *  This routine frees a semaphore control block to the
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 *  inactive chain of free semaphore control blocks.
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 *
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 *  Input parameters:
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 *    the_semaphore - pointer to semaphore control block
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 *
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 *  Output parameters: NONE
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 */
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RTEMS_INLINE_ROUTINE void _ITRON_Semaphore_Free (
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  ITRON_Semaphore_Control *the_semaphore
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)
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{
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  _ITRON_Objects_Free( &_ITRON_Semaphore_Information, &the_semaphore->Object );
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}
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/*PAGE
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 *
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 *  _ITRON_Semaphore_Get
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 *
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 *  DESCRIPTION:
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 *
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 *  This function maps semaphore IDs to semaphore control blocks.
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 *  If ID corresponds to a local semaphore, then it returns
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 *  the_semaphore control pointer which maps to ID and location
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 *  is set to OBJECTS_LOCAL.  if the semaphore ID is global and
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 *  resides on a remote node, then location is set to OBJECTS_REMOTE,
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 *  and the_semaphore is undefined.  Otherwise, location is set
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 *  to OBJECTS_ERROR and the_semaphore is undefined.
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 *
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 *  Input parameters:
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 *    id            - ITRON semaphore ID.
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 *    the_location  - pointer to a location variable
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 *
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 *  Output parameters:
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 *    *the_location  - location of the object
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 */
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RTEMS_INLINE_ROUTINE ITRON_Semaphore_Control *_ITRON_Semaphore_Get (
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  ID                 id,
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  Objects_Locations *location
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)
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{
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  return (ITRON_Semaphore_Control *)
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    _ITRON_Objects_Get( &_ITRON_Semaphore_Information, id, location );
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}
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/*PAGE
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 *
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 *  _ITRON_Semaphore_Is_null
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 *
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 *  This function returns TRUE if the_semaphore is NULL and FALSE otherwise.
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 *
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 *  Input parameters:
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 *    the_semaphore - pointer to semaphore control block
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 *
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 *  Output parameters:
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 *    TRUE  - if the_semaphore is NULL
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 *    FALSE - otherwise
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 */
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RTEMS_INLINE_ROUTINE boolean _ITRON_Semaphore_Is_null (
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  ITRON_Semaphore_Control *the_semaphore
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)
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{
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  return ( the_semaphore == NULL );
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}
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/*
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 *  _ITRON_Semaphore_Translate_core_semaphore_return_code
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 *
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 *  This function returns a ITRON status code based on the semaphore
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 *  status code specified.
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 *
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 *  Input parameters:
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 *    the_semaphore_status - semaphore status code to translate
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 *
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 *  Output parameters:
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 *    ITRON status code - translated ITRON status code
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 *
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 */
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RTEMS_INLINE_ROUTINE ER  _ITRON_Semaphore_Translate_core_semaphore_return_code (
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  unsigned32 the_semaphore_status
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)
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{
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/* XXX need to be able to return "E_RLWAI" */
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  switch ( the_semaphore_status ) {
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    case  CORE_SEMAPHORE_STATUS_SUCCESSFUL:
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      return E_OK;
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    case CORE_SEMAPHORE_STATUS_UNSATISFIED_NOWAIT:
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      return E_TMOUT;
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    case CORE_SEMAPHORE_WAS_DELETED:
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      return E_DLT;
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    case CORE_SEMAPHORE_TIMEOUT:
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      return E_TMOUT;
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    case CORE_SEMAPHORE_MAXIMUM_COUNT_EXCEEDED:
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      return E_QOVR;
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    case THREAD_STATUS_PROXY_BLOCKING:
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      return THREAD_STATUS_PROXY_BLOCKING;
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  }
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  return E_OK;   /* unreached - only to remove warnings */
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}
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#ifdef __cplusplus
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}
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#endif
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#endif
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/* end of include file */
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