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/*
* Semaphore Manager
*
* DESCRIPTION:
*
* This package is the implementation of the Semaphore Manager.
* This manager utilizes standard Dijkstra counting semaphores to provide
* synchronization and mutual exclusion capabilities.
*
* Directives provided are:
*
* + create a semaphore
* + get an ID of a semaphore
* + delete a semaphore
* + acquire a semaphore
* + release a semaphore
*
* COPYRIGHT (c) 1989-1998.
* On-Line Applications Research Corporation (OAR).
* Copyright assigned to U.S. Government, 1994.
*
* 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.
*
* $Id$
*/
#include <rtems/system.h>
#include <rtems/rtems/status.h>
#include <rtems/rtems/support.h>
#include <rtems/rtems/attr.h>
#include <rtems/score/isr.h>
#include <rtems/score/object.h>
#include <rtems/rtems/options.h>
#include <rtems/rtems/sem.h>
#include <rtems/score/coremutex.h>
#include <rtems/score/coresem.h>
#include <rtems/score/states.h>
#include <rtems/score/thread.h>
#include <rtems/score/threadq.h>
#if defined(RTEMS_MULTIPROCESSING)
#include <rtems/score/mpci.h>
#endif
#include <rtems/score/sysstate.h>
#include <rtems/score/interr.h>
/*PAGE
*
* _Semaphore_Translate_core_mutex_return_code
*
* Input parameters:
* the_mutex_status - mutex status code to translate
*
* Output parameters:
* rtems status code - translated RTEMS status code
*
*/
rtems_status_code _Semaphore_Translate_core_mutex_return_code (
unsigned32 the_mutex_status
)
{
switch ( the_mutex_status ) {
case CORE_MUTEX_STATUS_SUCCESSFUL:
return RTEMS_SUCCESSFUL;
case CORE_MUTEX_STATUS_UNSATISFIED_NOWAIT:
return RTEMS_UNSATISFIED;
case CORE_MUTEX_STATUS_NESTING_NOT_ALLOWED:
return RTEMS_INTERNAL_ERROR;
case CORE_MUTEX_STATUS_NOT_OWNER_OF_RESOURCE:
return RTEMS_NOT_OWNER_OF_RESOURCE;
case CORE_MUTEX_WAS_DELETED:
return RTEMS_OBJECT_WAS_DELETED;
case CORE_MUTEX_TIMEOUT:
return RTEMS_TIMEOUT;
case THREAD_STATUS_PROXY_BLOCKING:
return THREAD_STATUS_PROXY_BLOCKING;
}
return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */
}
/*PAGE
*
* _Semaphore_Translate_core_semaphore_return_code
*
* Input parameters:
* the_semaphore_status - semaphore status code to translate
*
* Output parameters:
* rtems status code - translated RTEMS status code
*
*/
rtems_status_code _Semaphore_Translate_core_semaphore_return_code (
unsigned32 the_semaphore_status
)
{
switch ( the_semaphore_status ) {
case CORE_SEMAPHORE_STATUS_SUCCESSFUL:
return RTEMS_SUCCESSFUL;
case CORE_SEMAPHORE_STATUS_UNSATISFIED_NOWAIT:
return RTEMS_UNSATISFIED;
case CORE_SEMAPHORE_WAS_DELETED:
return RTEMS_OBJECT_WAS_DELETED;
case CORE_SEMAPHORE_TIMEOUT:
return RTEMS_TIMEOUT;
/*
* An overflow should not occur in the Classic API.
*/
case CORE_SEMAPHORE_MAXIMUM_COUNT_EXCEEDED:
return RTEMS_INTERNAL_ERROR;
case THREAD_STATUS_PROXY_BLOCKING:
return THREAD_STATUS_PROXY_BLOCKING;
}
return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */
}
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