105 lines
3.5 KiB
C
105 lines
3.5 KiB
C
/****************************************************************************
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* sched/pthread/pthread_keydelete.c
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*
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* Copyright (C) 2007, 2009, 2018 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 <errno.h>
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#include <debug.h>
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#include <nuttx/irq.h>
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#include "sched/sched.h"
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#include "pthread/pthread.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: pthread_key_delete
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*
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* Description:
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* This POSIX function deletes a thread-specific data key
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* previously returned by pthread_key_create().
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*
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* Input Parameters:
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* key - the key to delete
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*
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* Returned Value:
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* Returns zero (OK) on success. EINVAL may be returned if an invalid
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* key is received.
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*
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* POSIX Compatibility:
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*
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****************************************************************************/
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int pthread_key_delete(pthread_key_t key)
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{
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#if CONFIG_NPTHREAD_KEYS > 0
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FAR struct tcb_s *rtcb = this_task();
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FAR struct task_group_s *group = rtcb->group;
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pthread_keyset_t mask;
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irqstate_t flags;
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int ret = EINVAL;
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DEBUGASSERT((unsigned)key < PTHREAD_KEYS_MAX && group != NULL);
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if ((unsigned)key < PTHREAD_KEYS_MAX)
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{
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/* This is done in a critical section here to avoid concurrent
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* modification of the group keyset.
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*/
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mask = (1 << key);
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flags = spin_lock_irqsave();
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DEBUGASSERT((group->tg_keyset & mask) != 0);
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group->tg_keyset &= ~mask;
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spin_unlock_irqrestore(flags);
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ret = OK;
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}
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return ret;
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#else
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return ENOSYS;
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#endif
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}
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