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