/* * mutex6.c * * * -------------------------------------------------------------------------- * * Pthreads-embedded (PTE) - POSIX Threads Library for embedded systems * Copyright(C) 2008 Jason Schmidlapp * * Contact Email: jschmidlapp@users.sourceforge.net * * * Based upon 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 original list of contributors to the Pthreads-win32 project * is contained in the file CONTRIBUTORS.ptw32 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 the default (type not set) mutex type. * Should be the same as PTHREAD_MUTEX_NORMAL. * Thread locks mutex twice (recursive lock). * Locking thread should deadlock on second attempt. * * Depends on API functions: * pthread_mutex_lock() * pthread_mutex_trylock() * pthread_mutex_unlock() */ #include #include #include "pte_osal.h" #include "test.h" static int lockCount = 0; static pthread_mutex_t mutex; static void * locker(void * arg) { assert(pthread_mutex_lock(&mutex) == 0); lockCount++; /* Should wait here (deadlocked) */ assert(pthread_mutex_lock(&mutex) == 0); lockCount++; assert(pthread_mutex_unlock(&mutex) == 0); return 0; } int pthread_test_mutex6() { pthread_t t; lockCount = 0; assert(pthread_mutex_init(&mutex, NULL) == 0); assert(pthread_create(&t, NULL, locker, NULL) == 0); pte_osThreadSleep(1000); assert(lockCount == 1); /* * Should succeed even though we don't own the lock * because FAST mutexes don't check ownership. */ assert(pthread_mutex_unlock(&mutex) == 0); pte_osThreadSleep (1000); assert(lockCount == 2); assert(pthread_join(t,NULL) == 0); assert(pthread_mutex_destroy(&mutex) == 0); return 0; }