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/**
* @file
*
* @ingroup RTEMSImplClassicSemaphore
*
* @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 RTEMSImplClassicSemaphore
*
* @{
*/
/**
* The following defines the control block used to manage each semaphore.
*/
typedef struct {
/**
* @brief The object management portion of a semaphore instance.
*
* A pointer of the node of active semaphores contains the semaphore flags,
* see _Semaphore_Get_flags(). The rational for this optimization is a
* reduction of the semaphore control size in general and the ability to
* allow a configuration dependent size of the semaphore control block, e.g.
* for the MrsP semaphores.
*/
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;
} Semaphore_Control;
/**
* @brief The Classic Semaphore objects information.
*/
extern Objects_Information _Semaphore_Information;
#if defined(RTEMS_MULTIPROCESSING)
/**
* @brief Semaphore MP Send Extract Proxy
*
* This routine is invoked when a task is deleted and it
* has a proxy which must be removed from a thread queue and
* the remote node must be informed of this.
*/
void _Semaphore_MP_Send_extract_proxy (
Thread_Control *the_thread,
Objects_Id id
);
#endif
/**
* @brief Macro to define the objects information for the Classic Semaphore
* objects.
*
* This macro should only be used by <rtems/confdefs.h>.
*
* @param max The configured object maximum (the OBJECTS_UNLIMITED_OBJECTS flag
* may be set).
* @param scheduler_count The configured scheduler count (only used in SMP
* configurations).
*/
#if defined(RTEMS_SMP)
#define SEMAPHORE_INFORMATION_DEFINE( max, scheduler_count ) \
typedef union { \
Objects_Control Object; \
Semaphore_Control Semaphore; \
struct { \
Objects_Control Object; \
MRSP_Control Control; \
Priority_Control ceiling_priorities[ scheduler_count ]; \
} MRSP; \
} Semaphore_Configured_control; \
OBJECTS_INFORMATION_DEFINE( \
_Semaphore, \
OBJECTS_CLASSIC_API, \
OBJECTS_RTEMS_SEMAPHORES, \
Semaphore_Configured_control, \
max, \
OBJECTS_NO_STRING_NAME, \
_Semaphore_MP_Send_extract_proxy \
)
#else
#define SEMAPHORE_INFORMATION_DEFINE( max, scheduler_count ) \
OBJECTS_INFORMATION_DEFINE( \
_Semaphore, \
OBJECTS_CLASSIC_API, \
OBJECTS_RTEMS_SEMAPHORES, \
Semaphore_Control, \
max, \
OBJECTS_NO_STRING_NAME, \
_Semaphore_MP_Send_extract_proxy \
)
#endif
/** @} */
#ifdef __cplusplus
}
#endif
#endif
/* end of include file */
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