f9fb182809
Update files from Gregory Nutt to Apache 2.0 license. Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
99 lines
2.9 KiB
C
99 lines
2.9 KiB
C
/****************************************************************************
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* fs/aio/aio_queue.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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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 <sched.h>
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#include <aio.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/wqueue.h>
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#include "aio/aio.h"
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#ifdef CONFIG_FS_AIO
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: aio_queue
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*
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* Description:
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* Schedule the asynchronous I/O on the low priority work queue
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*
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* Input Parameters:
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* arg - Worker argument. In this case, a pointer to an instance of
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* struct aiocb cast to void *.
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*
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* Returned Value:
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* Zero (OK) on success. Otherwise, -1 is returned and the errno is set
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* appropriately.
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*
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****************************************************************************/
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int aio_queue(FAR struct aio_container_s *aioc, worker_t worker)
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{
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int ret;
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#ifdef CONFIG_PRIORITY_INHERITANCE
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/* Prohibit context switches until we complete the queuing */
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sched_lock();
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/* Make sure that the low-priority worker thread is running at at least
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* the priority specified for this action.
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*/
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lpwork_boostpriority(aioc->aioc_prio);
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#endif
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/* Schedule the work on the low priority worker thread */
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ret = work_queue(LPWORK, &aioc->aioc_work, worker, aioc, 0);
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if (ret < 0)
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{
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FAR struct aiocb *aiocbp = aioc->aioc_aiocbp;
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DEBUGASSERT(aiocbp);
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#ifdef CONFIG_PRIORITY_INHERITANCE
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lpwork_restorepriority(aioc->aioc_prio);
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#endif
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aiocbp->aio_result = ret;
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set_errno(-ret);
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ret = ERROR;
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}
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#ifdef CONFIG_PRIORITY_INHERITANCE
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/* Now the low-priority work queue might run at its new priority */
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sched_unlock();
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#endif
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return ret;
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}
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#endif /* CONFIG_FS_AIO */
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