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- /****************************************************************************
- * fs/aio/aio_signal.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 <sys/types.h>
- #include <sched.h>
- #include <signal.h>
- #include <aio.h>
- #include <assert.h>
- #include <errno.h>
- #include <debug.h>
- #include <nuttx/signal.h>
- #include "aio/aio.h"
- #ifdef CONFIG_FS_AIO
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: aio_signal
- *
- * Description:
- * Signal the client that an I/O has completed.
- *
- * Input Parameters:
- * pid - ID of the task to signal
- * aiocbp - Pointer to the asynchronous I/O state structure that includes
- * information about how to signal the client
- *
- * Returned Value:
- * Zero (OK) if the client was successfully signalled. Otherwise, a
- * negated errno value is returned.
- *
- * Assumptions:
- * This function runs only in the context of the worker thread.
- *
- ****************************************************************************/
- int aio_signal(pid_t pid, FAR struct aiocb *aiocbp)
- {
- union sigval value;
- int status;
- int ret;
- DEBUGASSERT(aiocbp);
- ret = OK; /* Assume success */
- /* Signal the client */
- ret = nxsig_notification(pid, &aiocbp->aio_sigevent,
- SI_ASYNCIO, &aiocbp->aio_sigwork);
- if (ret < 0)
- {
- ferr("ERROR: nxsig_notification failed: %d\n", ret);
- }
- /* Send the poll signal in any event in case the caller is waiting
- * on sig_suspend();
- */
- value.sival_ptr = aiocbp;
- status = nxsig_queue(pid, SIGPOLL, value);
- if (status < 0)
- {
- ferr("ERROR: nxsig_queue #2 failed: %d\n", status);
- if (ret >= OK)
- {
- ret = status;
- }
- }
- /* Make sure that errno is set correctly on return */
- if (ret < 0)
- {
- set_errno(-ret);
- return ERROR;
- }
- return OK;
- }
- #endif /* CONFIG_FS_AIO */
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