/* * File: condvar3.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: * - Test basic function of a CV * * Test Method (Validation or Falsification): * - Validation * * Requirements Tested: * -  * * Features Tested: * -  * * Cases Tested: * -  * * Description: * - The primary thread takes the lock before creating any threads. *   The secondary thread blocks on the lock allowing the primary *   thread to enter the cv wait state which releases the lock. *   The secondary thread then takes the lock and signals the waiting *   primary thread. * * Environment: * -  * * Input: * - None. * * Output: * - File name, Line number, and failed expression on failure. * - No output on success. * * Assumptions: * -  * * Pass Criteria: * - pthread_cond_timedwait returns 0. * - Process returns zero exit status. * * Fail Criteria: * - pthread_cond_timedwait returns ETIMEDOUT. * - Process returns non-zero exit status. */#include "test.h"#include <sys/timeb.h>static pthread_cond_t cv;static pthread_mutex_t mutex;static int shared = 0;enum {  NUMTHREADS = 2         /* Including the primary thread. */};void *mythread(void * arg){  int result = 0;  assert(pthread_mutex_lock(&mutex) == 0);  shared++;  assert(pthread_mutex_unlock(&mutex) == 0);  if ((result = pthread_cond_signal(&cv)) != 0)    {      printf("Error = %s\n", error_string[result]);    }  assert(result == 0);  return (void *) 0;}intmain(){  pthread_t t[NUMTHREADS];  struct timespec abstime = { 0, 0 };  struct _timeb currSysTime;  const DWORD NANOSEC_PER_MILLISEC = 1000000;  assert((t[0] = pthread_self()).p != NULL);  assert(pthread_cond_init(&cv, NULL) == 0);  assert(pthread_mutex_init(&mutex, NULL) == 0);  assert(pthread_mutex_lock(&mutex) == 0);  /* get current system time */  _ftime(&currSysTime);  abstime.tv_sec = currSysTime.time;  abstime.tv_nsec = NANOSEC_PER_MILLISEC * currSysTime.millitm;  assert(pthread_create(&t[1], NULL, mythread, (void *) 1) == 0);  abstime.tv_sec += 5;  while (! (shared > 0))    assert(pthread_cond_timedwait(&cv, &mutex, &abstime) == 0);  assert(shared > 0);  assert(pthread_mutex_unlock(&mutex) == 0);  assert(pthread_join(t[1], NULL) == 0);  assert(pthread_cond_destroy(&cv) == 0);  return 0;}