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/************************************************************
* sched_addblocked.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* 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 Gregory Nutt 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 <sys/types.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 inferreded 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 _TCB *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, g_tasklisttable[task_state].list);
}
else
{
/* Add the task to a non-prioritized list */
dq_addlast((FAR dq_entry_t*)btcb, g_tasklisttable[task_state].list);
}
/* Make sure the TCB's state corresponds to the list */
btcb->task_state = task_state;
}
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