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Diffstat (limited to 'pthreads/tests/condvar3_2.c')
-rw-r--r-- | pthreads/tests/condvar3_2.c | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/pthreads/tests/condvar3_2.c b/pthreads/tests/condvar3_2.c new file mode 100644 index 000000000..5ddcf5748 --- /dev/null +++ b/pthreads/tests/condvar3_2.c @@ -0,0 +1,193 @@ +/* + * File: condvar3_2.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 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. + */ + +#define _WIN32_WINNT 0x400 + +#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); + assert(pthread_mutex_unlock(&mutex) == 0); + if (result == ETIMEDOUT) + { + InterlockedIncrement((LPLONG)&timedout); + } + else + { + InterlockedIncrement((LPLONG)&awoken); + } + + + 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. + */ + +// assert(pthread_mutex_lock(&mutex) == 0); + + if (InterlockedExchangeAdd((LPLONG)&awoken, 0L) > NUMTHREADS/3) + { + assert(pthread_cond_broadcast(&cv) == 0); + } + +// assert(pthread_mutex_unlock(&mutex) == 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); + } + + assert(pthread_mutex_destroy(&mutex) == 0); + + return 0; +} |