priority.h

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/*
 *  COPYRIGHT (c) 1989-2011.
 *  On-Line Applications Research Corporation (OAR).
 *
 *  Copyright (c) 2016, 2017 embedded brains GmbH.
 *
 *  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_PRIORITY_H
#define _RTEMS_SCORE_PRIORITY_H
 
#include <rtems/score/chain.h>
#include <rtems/score/cpu.h>
#include <rtems/score/rbtree.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
struct _Scheduler_Control;
 
typedef uint64_t Priority_Control;
 
#define PRIORITY_MINIMUM      0
 
#define PRIORITY_PSEUDO_ISR   PRIORITY_MINIMUM
 
#if defined (CPU_PRIORITY_MAXIMUM)
  #define PRIORITY_DEFAULT_MAXIMUM      CPU_PRIORITY_MAXIMUM
#else
  #define PRIORITY_DEFAULT_MAXIMUM      255
#endif
 
typedef struct {
  union {
    Chain_Node Chain;
    RBTree_Node RBTree;
  } Node;
 
  Priority_Control priority;
} Priority_Node;
 
typedef enum {
  PRIORITY_ACTION_ADD,
  PRIORITY_ACTION_CHANGE,
  PRIORITY_ACTION_REMOVE,
  PRIORITY_ACTION_INVALID
} Priority_Action_type;
 
typedef struct Priority_Aggregation Priority_Aggregation;
 
struct Priority_Aggregation {
  Priority_Node Node;
 
  RBTree_Control Contributors;
 
#if defined(RTEMS_SMP)
  const struct _Scheduler_Control *scheduler;
#endif
 
  struct {
#if defined(RTEMS_SMP)
    Priority_Aggregation *next;
#endif
 
    Priority_Node *node;
 
    Priority_Action_type type;
  } Action;
};
 
typedef struct {
  Priority_Aggregation *actions;
} Priority_Actions;
 
#ifdef __cplusplus
}
#endif
 
#endif
/* end of include file */