b48009644f
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5610 42af7a65-404d-4744-a932-0658087f49c3
123 lines
4.4 KiB
C
123 lines
4.4 KiB
C
/************************************************************************
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* sched/sched_addblocked.c
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*
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* Copyright (C) 2007, 2009 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************/
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/************************************************************************
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* Included Files
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************************************************************************/
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#include <nuttx/config.h>
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#include <queue.h>
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#include <assert.h>
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#include "os_internal.h"
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/************************************************************************
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* Definitions
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************************************************************************/
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/************************************************************************
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* Private Type Declarations
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************************************************************************/
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/************************************************************************
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* Global Variables
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************************************************************************/
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/************************************************************************
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* Private Variables
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************************************************************************/
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/************************************************************************
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* Private Function Prototypes
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************************************************************************/
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/************************************************************************
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* Public Functions
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************************************************************************/
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/************************************************************************
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* Name: sched_addblocked
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*
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* Description:
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* This function adds a TCB to one of the blocked state task lists as
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* inferred from task_state.
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*
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* Inputs:
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* btcb - Points to the TCB that is blocked
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* task_state - identifies the state of the blocked task
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*
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* Return Value:
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* None
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*
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* Assumptions:
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* - The caller has established a critical section before
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* calling this function.
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*
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************************************************************************/
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void sched_addblocked(FAR struct tcb_s *btcb, tstate_t task_state)
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{
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/* Make sure that we received a valid blocked state */
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ASSERT(task_state >= FIRST_BLOCKED_STATE &&
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task_state <= LAST_BLOCKED_STATE);
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/* Add the TCB to the blocked task list associated with this state.
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* First, determine if the task is to be added to a prioritized task
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* list
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*/
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if (g_tasklisttable[task_state].prioritized)
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{
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/* Add the task to a prioritized list */
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sched_addprioritized(btcb,
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(FAR dq_queue_t*)g_tasklisttable[task_state].list);
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}
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else
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{
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/* Add the task to a non-prioritized list */
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dq_addlast((FAR dq_entry_t*)btcb,
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(FAR dq_queue_t*)g_tasklisttable[task_state].list);
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}
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/* Make sure the TCB's state corresponds to the list */
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btcb->task_state = task_state;
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}
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