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/*
* File: semaphore4t.c
*
*
* --------------------------------------------------------------------------
*
* Pthreads-win32 - POSIX Threads Library for Win32
* Copyright(C) 1998 John E. Bossom
* Copyright(C) 1999,2012 Pthreads-win32 contributors
*
* Homepage1: http://sourceware.org/pthreads-win32/
* Homepage2: http://sourceforge.net/projects/pthreads4w/
*
* 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
* after threads are cancelled.
* -
*
* Test Method (Validation or Falsification):
* - Validation
*
* Requirements Tested:
* - sem_timedwait cancellation.
*
* 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_timedwait(&s, NULL) == 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);
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);
assert(-value == i);
}
assert(sem_getvalue(&s, &value) == 0);
assert(-value == MAX_COUNT);
assert(pthread_cancel(t[50]) == 0);
assert(pthread_join(t[50], NULL) == 0);
assert(sem_getvalue(&s, &value) == 0);
assert(-value == MAX_COUNT - 1);
for (i = MAX_COUNT - 2; i >= 0; i--)
{
assert(sem_post(&s) == 0);
assert(sem_getvalue(&s, &value) == 0);
assert(-value == i);
}
for (i = 1; i <= MAX_COUNT; i++)
if (i != 50)
assert(pthread_join(t[i], NULL) == 0);
return 0;
}
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