93 lines
3.6 KiB
C
93 lines
3.6 KiB
C
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/****************************************************************************
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* libc/pthread/pthread_setcancelstate.c
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*
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* Copyright (C) 2007, 2008, 2016 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 <pthread.h>
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#include <sched.h>
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#include <errno.h>
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/* These are defined in different header files but must have the same values. */
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#if PTHREAD_CANCEL_ENABLE != TASK_CANCEL_ENABLE
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# error We must have PTHREAD_CANCEL_ENABLE == TASK_CANCEL_ENABLE
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#endif
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#if PTHREAD_CANCEL_DISABLE != TASK_CANCEL_DISABLE
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# error We must have PTHREAD_CANCEL_DISABLE == TASK_CANCEL_DISABLE
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: pthread_setcancelstate
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*
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* Description:
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* The pthread_setcancelstate() function atomically both sets the calling
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* thread's cancelability state to the indicated state and returns the
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* previous cancelability state at the location referenced by oldstate.
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* Legal values for state are PTHREAD_CANCEL_ENABLE and
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* PTHREAD_CANCEL_DISABLE.
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*
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* The cancelability state and type of any newly created threads,
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* including the thread in which main() was first invoked, are
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* PTHREAD_CANCEL_ENABLE and PTHREAD_CANCEL_DEFERRED respectively.
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*
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****************************************************************************/
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int pthread_setcancelstate(int state, FAR int *oldstate)
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{
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int ret;
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/* task_setcancelstate() can do this */
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ret = task_setcancelstate(state, oldstate);
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if (ret < 0)
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{
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ret = errno;
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}
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return ret;
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}
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