diff options
Diffstat (limited to 'pthreads/tests/semaphore3.c')
-rw-r--r-- | pthreads/tests/semaphore3.c | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/pthreads/tests/semaphore3.c b/pthreads/tests/semaphore3.c new file mode 100644 index 000000000..a0dfcb6f6 --- /dev/null +++ b/pthreads/tests/semaphore3.c @@ -0,0 +1,121 @@ +/* + * File: semaphore3.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 sem_getvalue returns the correct number of waiters. + * - + * + * 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" + +#define MAX_COUNT 100 + +sem_t s; + +void * +thr (void * arg) +{ + assert(sem_wait(&s) == 0); + assert(pthread_detach(pthread_self()) == 0); + return NULL; +} + +int +main() +{ + int value = 0; + int i; + pthread_t t[MAX_COUNT+1]; + + assert(sem_init(&s, PTHREAD_PROCESS_PRIVATE, 0) == 0); + assert(sem_getvalue(&s, &value) == 0); +// printf("Value = %d\n", value); fflush(stdout); + assert(value == 0); + + for (i = 1; i <= MAX_COUNT; i++) + { + assert(pthread_create(&t[i], NULL, thr, NULL) == 0); + do { + sched_yield(); + assert(sem_getvalue(&s, &value) == 0); + } while (value != -i); +// printf("Value = %d\n", value); fflush(stdout); + assert(-value == i); + } + + for (i = MAX_COUNT - 1; i >= 0; i--) + { + assert(sem_post(&s) == 0); + assert(sem_getvalue(&s, &value) == 0); +// printf("Value = %d\n", value); fflush(stdout); + assert(-value == i); + } + + return 0; +} + |