| /* |
| * 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; |
| } |
| |
| int |
| main() |
| { |
| 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; |
| } |