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/**
* @file
*
* @ingroup RTEMSScorePriorityBitmap
*
* @brief This header file provides interfaces of the
* @ref RTEMSScorePriorityBitmap which are used by the implementation and the
* @ref RTEMSImplApplConfig.
*/
/*
* COPYRIGHT (c) 1989-2010.
* 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_SCORE_PRIORITYBITMAP_H
#define _RTEMS_SCORE_PRIORITYBITMAP_H
#include <rtems/score/cpu.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @defgroup RTEMSScorePriorityBitmap Priority Bitmap
*
* @brief This group contains the implementation to support priority bitmaps.
*
* @ingroup RTEMSScore
*
* @{
*/
typedef uint16_t Priority_bit_map_Word;
typedef struct {
/**
* @brief Each sixteen bit entry in this word is associated with one of the
* sixteen entries in the bit map.
*/
Priority_bit_map_Word major_bit_map;
/**
* @brief Each bit in the bit map indicates whether or not there are threads
* ready at a particular priority.
*
* The mapping of individual priority levels to particular bits is processor
* dependent as is the value of each bit used to indicate that threads are
* ready at that priority.
*/
Priority_bit_map_Word bit_map[ 16 ];
} Priority_bit_map_Control;
/**
* The following record defines the information associated with
* each thread to manage its interaction with the priority bit maps.
*/
typedef struct {
/** This is the address of minor bit map slot. */
Priority_bit_map_Word *minor;
/** This is the priority bit map ready mask. */
Priority_bit_map_Word ready_major;
/** This is the priority bit map ready mask. */
Priority_bit_map_Word ready_minor;
/** This is the priority bit map block mask. */
Priority_bit_map_Word block_major;
/** This is the priority bit map block mask. */
Priority_bit_map_Word block_minor;
} Priority_bit_map_Information;
/** @} */
#ifdef __cplusplus
}
#endif
#endif
/* end of include file */
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