text: /************************************************************************
   * sched/sched_addblocked.c
   *
   *   Copyright (C) 2007, 2009 Gregory Nutt. All rights reserved.
   *   Author: Gregory Nutt <gnutt@nuttx.org>
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   * 3. Neither the name NuttX nor the names of its contributors may be
   *    used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
   * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
   * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
   * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
   * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
   * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
   * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
   * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   * POSSIBILITY OF SUCH DAMAGE.
   *
   ************************************************************************/
  
  /************************************************************************
   * Included Files
   ************************************************************************/
  
  #include <nuttx/config.h>
  
  #include <queue.h>
  #include <assert.h>
  
  #include "os_internal.h"
  
  /************************************************************************
   * Definitions
   ************************************************************************/
  
  /************************************************************************
   * Private Type Declarations
   ************************************************************************/
  
  /************************************************************************
   * Global Variables
   ************************************************************************/
  
  /************************************************************************
   * Private Variables
   ************************************************************************/
  
  /************************************************************************
   * Private Function Prototypes
   ************************************************************************/
  
  /************************************************************************
   * Public Functions
   ************************************************************************/
  
  /************************************************************************
   * Name: sched_addblocked
   *
   * Description:
   *   This function adds a TCB to one of the blocked state task lists as 
   *   inferred from task_state.
   *
   * Inputs:
   *   btcb - Points to the TCB that is blocked
   *   task_state - identifies the state of the blocked task
   *
   * Return Value:
   *   None
   *
   * Assumptions:
   * - The caller has established a critical section before
   *   calling this function.
   *
   ************************************************************************/
  
  void sched_addblocked(FAR struct tcb_s *btcb, tstate_t task_state)
  {
    /* Make sure that we received a valid blocked state */
  
    ASSERT(task_state >= FIRST_BLOCKED_STATE &&
           task_state <= LAST_BLOCKED_STATE);
  
    /* Add the TCB to the blocked task list associated with this state.
     * First, determine if the task is to be added to a prioritized task
     * list
     */
  
    if (g_tasklisttable[task_state].prioritized)
      {
        /* Add the task to a prioritized list */
  
        sched_addprioritized(btcb,
                             (FAR dq_queue_t*)g_tasklisttable[task_state].list);
      }
    else
      {
        /* Add the task to a non-prioritized list */
  
        dq_addlast((FAR dq_entry_t*)btcb,
                   (FAR dq_queue_t*)g_tasklisttable[task_state].list);
      }
  
    /* Make sure the TCB's state corresponds to the list */
  
    btcb->task_state = task_state;
  }
  
  