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-rw-r--r--nuttx/sched/mq_descreate.c159
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diff --git a/nuttx/sched/mq_descreate.c b/nuttx/sched/mq_descreate.c
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--- a/nuttx/sched/mq_descreate.c
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-/****************************************************************************
- * sched/mq_descreate.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 <stdarg.h>
-#include <unistd.h>
-#include <string.h>
-#include <assert.h>
-#include <mqueue.h>
-#include <sched.h>
-#include <queue.h>
-#include <debug.h>
-
-#include <nuttx/arch.h>
-#include <nuttx/kmalloc.h>
-
-#include "os_internal.h"
-#include "sig_internal.h"
-
-#include "mq_internal.h"
-
-/****************************************************************************
- * Definitions
- ****************************************************************************/
-
-/****************************************************************************
- * Private Type Declarations
- ****************************************************************************/
-
-/****************************************************************************
- * Global Variables
- ****************************************************************************/
-
-/****************************************************************************
- * Private Variables
- ****************************************************************************/
-
-/****************************************************************************
- * Private Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: mq_desalloc
- *
- * Description:
- * Allocate a message queue descriptor.
- *
- * Inputs:
- * None
- *
- * Return Value:
- * Reference to the allocated mq descriptor.
- *
- ****************************************************************************/
-
-static mqd_t mq_desalloc(void)
-{
- mqd_t mqdes;
-
- /* Try to get the message descriptorfrom the free list */
-
- mqdes = (mqd_t)sq_remfirst(&g_desfree);
-
- /* Check if we got one. */
-
- if (!mqdes)
- {
- /* Add another block of message descriptors to the list */
-
- mq_desblockalloc();
-
- /* And try again */
-
- mqdes = (mqd_t)sq_remfirst(&g_desfree);
- }
-
- return mqdes;
-}
-
-/****************************************************************************
- * Public Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: mq_descreate
- *
- * Description:
- * Create a message queue descriptor for the specified TCB
- *
- * Inputs:
- * TCB - task that needs the descriptor.
- * msgq - Named message queue containing the message
- * oflags - access rights for the descriptor
- *
- * Return Value:
- * On success, the message queue descriptor is returned. NULL is returned
- * on a failure to allocate.
- *
- ****************************************************************************/
-
-mqd_t mq_descreate(FAR _TCB* mtcb, FAR msgq_t* msgq, int oflags)
-{
- mqd_t mqdes;
-
- /* Create a message queue descriptor for the TCB */
-
- mqdes = mq_desalloc();
- if (mqdes)
- {
- /* Initialize the MQ descriptor */
-
- memset(mqdes, 0, sizeof(struct mq_des));
- mqdes->msgq = msgq;
- mqdes->oflags = oflags;
-
- /* And add it to the specified tasks's TCB */
-
- sq_addlast((FAR sq_entry_t*)mqdes, &mtcb->msgdesq);
- }
-
- return mqdes;
-}