mrsp.h

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/*
 * Copyright (c) 2014 embedded brains GmbH.  All rights reserved.
 *
 *  embedded brains GmbH
 *  Dornierstr. 4
 *  82178 Puchheim
 *  Germany
 *  <rtems@embedded-brains.de>
 *
 * 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_MRSP_H
#define _RTEMS_SCORE_MRSP_H

#include <rtems/score/cpuopts.h>

#if defined(RTEMS_SMP)

#include <rtems/score/chain.h>
#include <rtems/score/isrlock.h>
#include <rtems/score/scheduler.h>
#include <rtems/score/thread.h>

#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */

typedef enum {
  MRSP_SUCCESSFUL = 0,
  MRSP_TIMEOUT = 6,
  MRSP_INVALID_NUMBER = 10,
  MRSP_RESOUCE_IN_USE = 12,
  MRSP_UNSATISFIED = 13,
  MRSP_INCORRECT_STATE = 14,
  MRSP_INVALID_PRIORITY = 19,
  MRSP_NOT_OWNER_OF_RESOURCE = 23,
  MRSP_NO_MEMORY = 26,

  MRSP_WAIT_FOR_OWNERSHIP = 255
} MRSP_Status;

typedef struct MRSP_Control MRSP_Control;

typedef struct {
  Chain_Node Node;

  MRSP_Control *resource;

  Thread_Control *thread;

  Priority_Control initial_priority;

  Scheduler_Help_state initial_help_state;

  volatile MRSP_Status status;
} MRSP_Rival;

struct MRSP_Control {
  Resource_Control Resource;

  Chain_Control Rivals;

  ISR_LOCK_MEMBER( Lock )

  
  Priority_Control initial_priority_of_owner;

  Priority_Control *ceiling_priorities;
};

#ifdef __cplusplus
}
#endif /* __cplusplus */

#endif /* RTEMS_SMP */

#endif /* _RTEMS_SCORE_MRSP_H */