pthread_equal.c

/*
 * pthread_equal.c
 *
 * Description:
 * This translation unit implements miscellaneous thread functions.
 *
 * --------------------------------------------------------------------------
 *
 *      Pthreads4w - POSIX Threads for Windows
 *      Copyright 1998 John E. Bossom
 *      Copyright 1999-2018, Pthreads4w contributors
 *
 *      Homepage: https://sourceforge.net/projects/pthreads4w/
 *
 *      The current list of contributors is contained
 *      in the file CONTRIBUTORS included with the source
 *      code distribution. The list can also be seen at the
 *      following World Wide Web location:
 *
 *      https://sourceforge.net/p/pthreads4w/wiki/Contributors/
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#include "pthread.h"
#include "implement.h"


int
pthread_equal (pthread_t t1, pthread_t t2)
     /*
      * ------------------------------------------------------
      * DOCPUBLIC
      *      This function returns nonzero if t1 and t2 are equal, else
      *      returns zero
      *
      * PARAMETERS
      *      t1,
      *      t2
      *              thread IDs
      *
      *
      * DESCRIPTION
      *      This function returns nonzero if t1 and t2 are equal, else
      *      returns zero.
      *
      * RESULTS
      *              non-zero        if t1 and t2 refer to the same thread,
      *              0               t1 and t2 do not refer to the same thread
      *
      * ------------------------------------------------------
      */
{
  int result;

  /*
   * We also accept NULL == NULL - treating NULL as a thread
   * for this special case, because there is no error that we can return.
   */
  result = ( t1.p == t2.p && t1.x == t2.x );

  return (result);

}				/* pthread_equal */