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/**
* @file
*
* @ingroup ClassicSemImpl
*
* @brief Classic Semaphore Manager Data Structures
*/
/*
* COPYRIGHT (c) 1989-2008, 2016.
* 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.org/license/LICENSE.
*/
#ifndef _RTEMS_RTEMS_SEMDATA_H
#define _RTEMS_RTEMS_SEMDATA_H
#include <rtems/rtems/sem.h>
#include <rtems/score/coremutex.h>
#include <rtems/score/coresem.h>
#include <rtems/score/mrsp.h>
#include <rtems/score/object.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @addtogroup ClassicSemImpl
*
* @{
*/
/**
* The following defines the control block used to manage each semaphore.
*/
typedef struct {
/** This field is the object management portion of a Semaphore instance. */
Objects_Control Object;
/**
* This contains the memory associated with the SuperCore Semaphore or
* Mutex instance that provides the primary functionality of each
* Classic API Semaphore instance. The structure used is dependent
* on the attributes specified by the user on the create directive.
*
* @note Only one of these has meaning in a particular Classic API
* Semaphore instance.
*/
union {
/**
* @brief The thread queue present in all other variants.
*/
Thread_queue_Control Wait_queue;
/**
* This is the SuperCore Mutex instance associated with this Classic
* API Semaphore instance.
*/
CORE_ceiling_mutex_Control Mutex;
/**
* This is the SuperCore Semaphore instance associated with this Classic
* API Semaphore instance.
*/
CORE_semaphore_Control Semaphore;
#if defined(RTEMS_SMP)
MRSP_Control MRSP;
#endif
} Core_control;
/**
* @brief The semaphore variant.
*
* @see Semaphore_Variant.
*/
unsigned int variant : 3;
/**
* @brief The semaphore thread queue discipline.
*
* @see Semaphore_Discipline.
*/
unsigned int discipline : 1;
#if defined(RTEMS_MULTIPROCESSING)
unsigned int is_global : 1;
#endif
} Semaphore_Control;
/** @} */
#ifdef __cplusplus
}
#endif
#endif
/* end of include file */
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