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Diffstat (limited to 'nuttx/sched/sched_releasefiles.c')
-rw-r--r-- | nuttx/sched/sched_releasefiles.c | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/nuttx/sched/sched_releasefiles.c b/nuttx/sched/sched_releasefiles.c new file mode 100644 index 000000000..a3ef71af4 --- /dev/null +++ b/nuttx/sched/sched_releasefiles.c @@ -0,0 +1,114 @@ +/**************************************************************************** + * sched/sched_releasefiles.c + * + * Copyright (C) 2007, 2008, 2012 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 <sched.h> +#include <nuttx/fs/fs.h> +#include <nuttx/net/net.h> +#include <nuttx/lib.h> + +#if CONFIG_NFILE_DESCRIPTORS > 0 || CONFIG_NSOCKET_DESCRIPTORS > 0 + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: sched_releasefiles + * + * Description: + * Release file resources attached to a TCB. This file may be called + * multiple times as a task exists. It will be called as early as possible + * to support proper closing of complex drivers that may need to wait + * on external events. + * + * Parameters: + * tcb - tcb of the new task. + * + * Return Value: + * None + * + * Assumptions: + * + ****************************************************************************/ + +int sched_releasefiles(_TCB *tcb) +{ + if (tcb) + { +#if CONFIG_NFILE_DESCRIPTORS > 0 + /* Free the file descriptor list */ + + if (tcb->filelist) + { + files_releaselist(tcb->filelist); + tcb->filelist = NULL; + } + +#if CONFIG_NFILE_STREAMS > 0 + /* Free the stream list */ + + if (tcb->streams) + { + lib_releaselist(tcb->streams); + tcb->streams = NULL; + } +#endif /* CONFIG_NFILE_STREAMS */ +#endif /* CONFIG_NFILE_DESCRIPTORS */ + +#if CONFIG_NSOCKET_DESCRIPTORS > 0 + /* Free the file descriptor list */ + + if (tcb->sockets) + { + net_releaselist(tcb->sockets); + tcb->sockets = NULL; + } +#endif /* CONFIG_NSOCKET_DESCRIPTORS */ + } + + return OK; +} + +#endif /* CONFIG_NFILE_DESCRIPTORS || CONFIG_NSOCKET_DESCRIPTORS */ |