/************************************************************************
* sched/pthread_exit.c
*
* Copyright (C) 2007, 2009, 2011-2013 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 <stdint.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <pthread.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/arch.h>
#include "os_internal.h"
#include "pthread_internal.h"
/************************************************************************
* Definitions
************************************************************************/
/************************************************************************
* Private Type Declarations
************************************************************************/
/************************************************************************
* Global Variables
************************************************************************/
/************************************************************************
* Private Variables
************************************************************************/
/************************************************************************
* Private Functions
************************************************************************/
/************************************************************************
* Public Functions
************************************************************************/
/************************************************************************
* Name: pthread_exit
*
* Description:
* Terminate execution of a thread started with pthread_create.
*
* Parameters:
* exit_valie
*
* Returned Value:
* None
*
* Assumptions:
*
************************************************************************/
void pthread_exit(FAR void *exit_value)
{
struct tcb_s *tcb = (struct tcb_s*)g_readytorun.head;
int status;
sdbg("exit_value=%p\n", exit_value);
/* Block any signal actions that would awaken us while were
* are performing the JOIN handshake.
*/
#ifndef CONFIG_DISABLE_SIGNALS
{
sigset_t set = ALL_SIGNAL_SET;
(void)sigprocmask(SIG_SETMASK, &set, NULL);
}
#endif
/* Complete pending join operations */
status = pthread_completejoin(getpid(), exit_value);
if (status != OK)
{
/* Assume that the join completion failured because this
* not really a pthread. Exit by calling exit().
*/
exit(EXIT_FAILURE);
}
/* Perform common task termination logic. This will get called again later
* through logic kicked off by _exit(). However, we need to call it before
* calling _exit() in order certain operations if this is the last thread
* of a task group: (2) To handle atexit() and on_exit() callbacks and
* (2) so that we can flush buffered I/O (which may required suspending).
*/
task_exithook(tcb, EXIT_SUCCESS, false);
/* Then just exit, retaining all file descriptors and without
* calling atexit() functions.
*/
_exit(EXIT_SUCCESS);
}
