text: /*
   * File: semaphore1.c
   *
   *
   * --------------------------------------------------------------------------
   *
   *      Pthreads-win32 - POSIX Threads Library for Win32
   *      Copyright(C) 1998 John E. Bossom
   *      Copyright(C) 1999,2005 Pthreads-win32 contributors
   * 
   *      Contact Email: rpj@callisto.canberra.edu.au
   * 
   *      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:
   *      http://sources.redhat.com/pthreads-win32/contributors.html
   * 
   *      This library is free software; you can redistribute it and/or
   *      modify it under the terms of the GNU Lesser General Public
   *      License as published by the Free Software Foundation; either
   *      version 2 of the License, or (at your option) any later version.
   * 
   *      This library is distributed in the hope that it will be useful,
   *      but WITHOUT ANY WARRANTY; without even the implied warranty of
   *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   *      Lesser General Public License for more details.
   * 
   *      You should have received a copy of the GNU Lesser General Public
   *      License along with this library in the file COPYING.LIB;
   *      if not, write to the Free Software Foundation, Inc.,
   *      59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
   *
   * --------------------------------------------------------------------------
   *
   * Test Synopsis: Verify trywait() returns -1 and sets EAGAIN.
   * - 
   *
   * Test Method (Validation or Falsification):
   * - Validation
   *
   * Requirements Tested:
   * - 
   *
   * Features Tested:
   * - 
   *
   * Cases Tested:
   * - 
   *
   * Description:
   * - 
   *
   * Environment:
   * - 
   *
   * Input:
   * - None.
   *
   * Output:
   * - File name, Line number, and failed expression on failure.
   * - No output on success.
   *
   * Assumptions:
   * - 
   *
   * Pass Criteria:
   * - Process returns zero exit status.
   *
   * Fail Criteria:
   * - Process returns non-zero exit status.
   */
  
  #include "test.h"
  
  void *
  thr(void * arg)
  {
    sem_t s;
    int result;
  
    assert(sem_init(&s, PTHREAD_PROCESS_PRIVATE, 0) == 0);
  
    assert((result = sem_trywait(&s)) == -1);
  
    if ( result == -1 )
    {
      int err = errno;
      printf("thread: sem_trywait 1: expecting error %s: got %s\n",
  	   error_string[EAGAIN], error_string[err]); fflush(stdout);
      assert(err == EAGAIN);
    }
    else
    {
      printf("thread: ok 1\n");
    }
  
    assert((result = sem_post(&s)) == 0);
  
    assert((result = sem_trywait(&s)) == 0);
  
    if ( result == -1 )
    {
      perror("thread: sem_trywait 2");
    }
    else
    {
      printf("thread: ok 2\n");
    }
  
    assert(sem_post(&s) == 0);
  
    return NULL;
  }
  
  
  int
  main()
  {
    pthread_t t;
    sem_t s;
    void* result1 = (void*)-1;
    int result2;
  
    assert(pthread_create(&t, NULL, thr, NULL) == 0);
    assert(pthread_join(t, &result1) == 0);
    assert((int)(size_t)result1 == 0);
  
    assert(sem_init(&s, PTHREAD_PROCESS_PRIVATE, 0) == 0);
  
    assert((result2 = sem_trywait(&s)) == -1);
  
    if (result2 == -1)
    {
      int err = errno;
      printf("main: sem_trywait 1: expecting error %s: got %s\n",
  	   error_string[EAGAIN], error_string[err]); fflush(stdout);
      assert(err == EAGAIN);
    }
    else
    {
      printf("main: ok 1\n");
    }
  
    assert((result2 = sem_post(&s)) == 0);
  
    assert((result2 = sem_trywait(&s)) == 0);
  
    if ( result2 == -1 )
    {
      perror("main: sem_trywait 2");
    }
    else
    {
      printf("main: ok 2\n");
    }
  
    assert(sem_post(&s) == 0);
  
    return 0;
  }
  
  