forked from Archive/PX4-Autopilot
109 lines
3.8 KiB
C
109 lines
3.8 KiB
C
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/****************************************************************************
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* sched_setuppthreadfiles.c
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*
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* Copyright (C) 2007, 2009, 2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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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 <nuttx/fs/fs.h>
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#include <nuttx/net/net.h>
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#include <nuttx/lib.h>
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#include "os_internal.h"
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#if CONFIG_NFILE_DESCRIPTORS > 0 || CONFIG_NSOCKET_DESCRIPTORS > 0
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: sched_setuppthreadfiles
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*
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* Description:
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* Configure a newly allocated TCB so that it will inherit file
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* descriptors and streams from the parent pthread.
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*
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* Parameters:
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* tcb - tcb of the new task.
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*
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* Return Value:
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* OK (if an error were returned, it would need to be a non-negated
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* errno value).
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*
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* Assumptions:
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*
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****************************************************************************/
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int sched_setuppthreadfiles(FAR _TCB *tcb)
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{
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FAR _TCB *rtcb = (FAR _TCB*)g_readytorun.head;
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#if CONFIG_NFILE_DESCRIPTORS > 0
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/* The child thread inherits the parent file descriptors */
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tcb->filelist = rtcb->filelist;
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files_addreflist(tcb->filelist);
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#endif /* CONFIG_NFILE_DESCRIPTORS */
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#if CONFIG_NSOCKET_DESCRIPTORS > 0
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/* The child thread inherits the parent socket descriptors */
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tcb->sockets = rtcb->sockets;
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net_addreflist(tcb->sockets);
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#endif /* CONFIG_NSOCKET_DESCRIPTORS */
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#if CONFIG_NFILE_STREAMS > 0
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/* The child thread inherits the parent streams */
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tcb->streams = rtcb->streams;
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lib_addreflist(tcb->streams);
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#endif /* CONFIG_NFILE_STREAMS */
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return OK;
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}
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#endif /* CONFIG_NFILE_DESCRIPTORS || CONFIG_NSOCKET_DESCRIPTORS */
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