schedulernode.h

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/*
 * Copyright (c) 2014, 2016 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_SCHEDULERNODE_H
#define _RTEMS_SCORE_SCHEDULERNODE_H

#include <rtems/score/basedefs.h>
#include <rtems/score/chain.h>
#include <rtems/score/priority.h>
#include <rtems/score/smplockseq.h>

struct _Thread_Control;

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

#if defined(RTEMS_SMP)

typedef enum {
  SCHEDULER_NODE_REQUEST_NOT_PENDING,

  SCHEDULER_NODE_REQUEST_ADD,

  SCHEDULER_NODE_REQUEST_REMOVE,

  SCHEDULER_NODE_REQUEST_NOTHING,

} Scheduler_Node_request;
#endif

typedef struct Scheduler_Node Scheduler_Node;

struct Scheduler_Node {
#if defined(RTEMS_SMP)

  union {
    Chain_Node Chain;
    RBTree_Node RBTree;
  } Node;

  int sticky_level;

  struct _Thread_Control *user;

  struct _Thread_Control *idle;
#endif

  struct _Thread_Control *owner;

#if defined(RTEMS_SMP)

  struct {
    Chain_Node Wait_node;

    union {
      Chain_Node Chain;

      Scheduler_Node *next;
    } Scheduler_node;

    Scheduler_Node *next_request;

    Scheduler_Node_request request;
  } Thread;
#endif

  struct {
    Priority_Aggregation Priority;
  } Wait;

  struct {
    Priority_Control value;

#if defined(RTEMS_SMP)

    SMP_sequence_lock_Control Lock;
#endif
  } Priority;
};

#if defined(RTEMS_SMP)

extern const size_t _Scheduler_Node_size;
#endif

#if defined(RTEMS_SMP)
#define SCHEDULER_NODE_OF_THREAD_WAIT_NODE( node ) \
  RTEMS_CONTAINER_OF( node, Scheduler_Node, Thread.Wait_node )

#define SCHEDULER_NODE_OF_THREAD_SCHEDULER_NODE( node ) \
  RTEMS_CONTAINER_OF( node, Scheduler_Node, Thread.Scheduler_node.Chain )
#endif

#ifdef __cplusplus
}
#endif /* __cplusplus */

#endif /* _RTEMS_SCORE_SCHEDULERNODE_H */