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/*
* mutex4.c
*
*
* Pthreads-win32 - POSIX Threads Library for Win32
* Copyright (C) 1998 Ben Elliston and Ross Johnson
* Copyright (C) 1999,2000,2001 Ross Johnson
*
* Contact Email: rpj@ise.canberra.edu.au
*
* 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 2.1 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; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* --------------------------------------------------------------------------
*
* Thread A locks mutex - thread B tries to unlock.
*
* Depends on API functions:
* pthread_mutex_lock()
* pthread_mutex_trylock()
* pthread_mutex_unlock()
*/
#include "test.h"
static int wasHere = 0;
static pthread_mutex_t mutex1;
void * unlocker(void * arg)
{
int expectedResult = (int) arg;
wasHere++;
assert(pthread_mutex_unlock(&mutex1) == expectedResult);
wasHere++;
return NULL;
}
int
main()
{
pthread_t t;
pthread_mutexattr_t ma;
assert(pthread_mutexattr_init(&ma) == 0);
wasHere = 0;
assert(pthread_mutexattr_settype(&ma, PTHREAD_MUTEX_DEFAULT) == 0);
assert(pthread_mutex_init(&mutex1, &ma) == 0);
assert(pthread_mutex_lock(&mutex1) == 0);
assert(pthread_create(&t, NULL, unlocker, (void *) 0) == 0);
assert(pthread_join(t, NULL) == 0);
assert(pthread_mutex_unlock(&mutex1) == EPERM);
assert(wasHere == 2);
wasHere = 0;
assert(pthread_mutexattr_settype(&ma, PTHREAD_MUTEX_NORMAL) == 0);
assert(pthread_mutex_init(&mutex1, &ma) == 0);
assert(pthread_mutex_lock(&mutex1) == 0);
assert(pthread_create(&t, NULL, unlocker, (void *) 0) == 0);
assert(pthread_join(t, NULL) == 0);
assert(pthread_mutex_unlock(&mutex1) == EPERM);
assert(wasHere == 2);
wasHere = 0;
assert(pthread_mutexattr_settype(&ma, PTHREAD_MUTEX_ERRORCHECK) == 0);
assert(pthread_mutex_init(&mutex1, &ma) == 0);
assert(pthread_mutex_lock(&mutex1) == 0);
assert(pthread_create(&t, NULL, unlocker, (void *) EPERM) == 0);
assert(pthread_join(t, NULL) == 0);
assert(pthread_mutex_unlock(&mutex1) == 0);
assert(wasHere == 2);
wasHere = 0;
assert(pthread_mutexattr_settype(&ma, PTHREAD_MUTEX_RECURSIVE) == 0);
assert(pthread_mutex_init(&mutex1, &ma) == 0);
assert(pthread_mutex_lock(&mutex1) == 0);
assert(pthread_create(&t, NULL, unlocker, (void *) EPERM) == 0);
assert(pthread_join(t, NULL) == 0);
assert(pthread_mutex_unlock(&mutex1) == 0);
assert(wasHere == 2);
return 0;
}
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