/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup POSIXAPI
*
* @brief Suspends Execution of Calling Thread until Target Thread Terminates
*/
/*
* 16.1.3 Wait for Thread Termination, P1003.1c/Draft 10, p. 147
*
* COPYRIGHT (c) 1989-2014.
* On-Line Applications Research Corporation (OAR).
*
* Copyright (c) 2016 embedded brains GmbH & Co. KG
*
* 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.
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <pthread.h>
#include <errno.h>
#include <rtems/posix/threadsup.h>
#include <rtems/posix/posixapi.h>
#include <rtems/score/threadimpl.h>
#include <rtems/score/statesimpl.h>
static int _POSIX_Threads_Join( pthread_t thread, void **value_ptr )
{
Thread_Control *the_thread;
Thread_queue_Context queue_context;
Thread_Control *executing;
Status_Control status;
_Thread_queue_Context_initialize( &queue_context );
the_thread = _Thread_Get( thread, &queue_context.Lock_context.Lock_context );
if ( the_thread == NULL ) {
return ESRCH;
}
_Thread_State_acquire_critical(
the_thread,
&queue_context.Lock_context.Lock_context
);
if ( !_Thread_Is_joinable( the_thread ) ) {
_Thread_State_release( the_thread, &queue_context.Lock_context.Lock_context );
return EINVAL;
}
executing = _Thread_Executing;
status = _Thread_Join(
the_thread,
STATES_INTERRUPTIBLE_BY_SIGNAL | STATES_WAITING_FOR_JOIN,
executing,
&queue_context
);
if ( status != STATUS_SUCCESSFUL ) {
return _POSIX_Get_error( status );
}
if ( value_ptr != NULL ) {
*value_ptr = executing->Wait.return_argument;
}
return 0;
}
int pthread_join( pthread_t thread, void **value_ptr )
{
int error;
do {
error = _POSIX_Threads_Join( thread, value_ptr );
} while ( error == EINTR );
return error;
}
