/**
 * @file
 * 
 * @brief POSIX Thread API Support
 *
 * This defines the POSIX thread API extension.
 */

/*
 *  COPYRIGHT (c) 1989-2014.
 *  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_POSIX_THREADSUP_H
#define _RTEMS_POSIX_THREADSUP_H

#include <rtems/score/thread.h>
#include <rtems/score/watchdog.h>

#include <pthread.h>
#include <signal.h>

/**
 *  @defgroup POSIX_THREAD POSIX Thread API Extension
 *
 *  @ingroup POSIXAPI
 * 
 */
/**@{**/
#ifdef __cplusplus
extern "C" {
#endif

/**
 * This defines the POSIX API support structure associated with
 * each thread in a system with POSIX configured.
 */
typedef struct {
  /** Created with explicit or inherited scheduler. */
  bool created_with_explicit_scheduler;

  /** The scheduler policy. */
  int schedpolicy;

  /**
   * @brief Control block for the sporadic server scheduling policy.
   */
  struct {
    /** The thread of this sporadic control block */
    Thread_Control *thread;

    /**
     * @brief This is the timer which controls when the thread executes at high
     * and low priority when using the sporadic server scheduling policy.
     */
    Watchdog_Control Timer;

    /**
     * @brief The low priority when using the sporadic server scheduling
     * policy.
     */
    Priority_Node Low_priority;

    /**
     * @brief Replenishment period for sporadic server.
     */
    struct timespec sched_ss_repl_period;

    /**
     * @brief Initial budget for sporadic server.
     */
    struct timespec sched_ss_init_budget;

    /**
     * @brief Maximum pending replenishments.
     *
     * Only used by pthread_getschedparam() and pthread_getattr_np().
    */
    int sched_ss_max_repl;
  } Sporadic;

  /** This is the set of signals which are currently unblocked. */
  sigset_t                signals_unblocked;
  /** This is the set of signals which are currently pending. */
  sigset_t                signals_pending;

  /**
   * @brief Signal post-switch action in case signals are pending.
   */
  Thread_Action           Signal_action;
} POSIX_API_Control;

/** @} */

#ifdef __cplusplus
}
#endif

#endif
/* end of include file */