/* * spin2.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 * * -------------------------------------------------------------------------- * * Declare a spinlock object, lock it, trylock it, * and then unlock it again. * */ #include "test.h" static pthread_spinlock_t lock = NULL; static int washere = 0; static void * func(void * arg) { assert(pthread_spin_trylock(&lock) == EBUSY); washere = 1; return 0; } int pthread_test_spin2() { pthread_t t; assert(pthread_spin_init(&lock, PTHREAD_PROCESS_PRIVATE) == 0); assert(pthread_spin_lock(&lock) == 0); assert(pthread_create(&t, NULL, func, NULL) == 0); assert(pthread_join(t, NULL) == 0); assert(pthread_spin_unlock(&lock) == 0); assert(pthread_spin_destroy(&lock) == 0); assert(washere == 1); return 0; }