/* * File: condvar3_2.c * * * -------------------------------------------------------------------------- * * -------------------------------------------------------------------------- * * Pthreads-win32 - POSIX Threads Library for Win32 * Copyright(C) 1998 John E. Bossom * Copyright(C) 1999,2002 Pthreads-win32 contributors * * Contact Email: rpj@ise.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 timeout of multiple waits on a CV with remainder broadcast awoken. * * Test Method (Validation or Falsification): * - Validation * * Requirements Tested: * - * * Features Tested: * - * * Cases Tested: * - * * Description: * - Because some CVs are never signaled, we expect their waits to time out. * Some time out, the rest are broadcast signaled. Pthread_cond_destroy() will fail * unless all are accounted for, either signaled or timedout. * * Environment: * - * * Input: * - None. * * Output: * - File name, Line number, and failed expression on failure. * - No output on success. * * Assumptions: * - * * Pass Criteria: * - pthread_cond_timedwait returns ETIMEDOUT. * - Process returns zero exit status. * * Fail Criteria: * - pthread_cond_timedwait does not return 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 struct timespec abstime = { 0, 0 }; static struct timespec abstime2 = { 0, 0 }; static int timedout = 0; static int awoken = 0; enum { NUMTHREADS = 30 }; void * mythread(void * arg) { int result; assert(pthread_mutex_lock(&mutex) == 0); abstime2.tv_sec = abstime.tv_sec; if ((int) arg % 3 == 0) { abstime2.tv_sec += 2; } result = pthread_cond_timedwait(&cv, &mutex, &abstime2); if (result == ETIMEDOUT) { timedout++; } else { awoken++; } assert(pthread_mutex_unlock(&mutex) == 0); return arg; } #include "../implement.h" int main() { int i; pthread_t t[NUMTHREADS + 1]; int result = 0; struct _timeb currSysTime; const DWORD NANOSEC_PER_MILLISEC = 1000000; assert(pthread_cond_init(&cv, NULL) == 0); assert(pthread_mutex_init(&mutex, NULL) == 0); /* get current system time */ _ftime(&currSysTime); abstime.tv_sec = abstime.tv_sec = currSysTime.time + 5; abstime.tv_nsec = abstime2.tv_nsec = NANOSEC_PER_MILLISEC * currSysTime.millitm; assert(pthread_mutex_lock(&mutex) == 0); for (i = 1; i <= NUMTHREADS; i++) { assert(pthread_create(&t[i], NULL, mythread, (void *) i) == 0); } assert(pthread_mutex_unlock(&mutex) == 0); for (i = 1; i <= NUMTHREADS; i++) { assert(pthread_join(t[i], (void **) &result) == 0); assert(result == i); /* * Approximately 2/3rds of the threads are expected to time out. * Signal the remainder after some threads have woken up and exited * and while some are still waking up after timeout. * Also tests that redundant broadcasts don't return errors. */ if (awoken > NUMTHREADS/3) { assert(pthread_cond_broadcast(&cv) == 0); } } assert(awoken == NUMTHREADS - timedout); { int result = pthread_cond_destroy(&cv); if (result != 0) { fprintf(stderr, "Result = %s\n", error_string[result]); fprintf(stderr, "\tWaitersBlocked = %ld\n", cv->nWaitersBlocked); fprintf(stderr, "\tWaitersGone = %ld\n", cv->nWaitersGone); fprintf(stderr, "\tWaitersToUnblock = %ld\n", cv->nWaitersToUnblock); fflush(stderr); } assert(result == 0); } return 0; }