/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup POSIXAPI
*
* @brief Compare Thread IDs
*/
/*
* NOTE: POSIX does not define the behavior when either thread id is invalid.
*
* COPYRIGHT (c) 1989-2007.
* On-Line Applications Research Corporation (OAR).
*
* 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/pthreadimpl.h>
#include <rtems/score/threadimpl.h>
int pthread_equal(
pthread_t t1,
pthread_t t2
)
{
/*
* If the system is configured for debug, then we will do everything we
* can to insure that both ids are valid. Otherwise, we will do the
* cheapest possible thing to determine if they are equal.
*/
#ifndef RTEMS_DEBUG
return _Objects_Are_ids_equal( t1, t2 );
#else
ISR_lock_Context lock_context_1;
ISR_lock_Context lock_context_2;
Thread_Control *thread_1;
Thread_Control *thread_2;
thread_1 = _Thread_Get( t1, &lock_context_1 );
thread_2 = _Thread_Get( t2, &lock_context_2 );
if ( thread_2 != NULL ) {
_ISR_lock_ISR_enable( &lock_context_2 );
}
if ( thread_1 != NULL ) {
_ISR_lock_ISR_enable( &lock_context_1 );
}
return thread_1 != NULL && thread_1 == thread_2;
#endif
}
