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