1 /* 2 * rwlock4.c 3 * 4 * 5 * -------------------------------------------------------------------------- 6 * 7 * Pthreads-embedded (PTE) - POSIX Threads Library for embedded systems 8 * Copyright(C) 2008 Jason Schmidlapp 9 * 10 * Contact Email: jschmidlapp@users.sourceforge.net 11 * 12 * 13 * Based upon Pthreads-win32 - POSIX Threads Library for Win32 14 * Copyright(C) 1998 John E. Bossom 15 * Copyright(C) 1999,2005 Pthreads-win32 contributors 16 * 17 * Contact Email: rpj@callisto.canberra.edu.au 18 * 19 * The original list of contributors to the Pthreads-win32 project 20 * is contained in the file CONTRIBUTORS.ptw32 included with the 21 * source code distribution. The list can also be seen at the 22 * following World Wide Web location: 23 * http://sources.redhat.com/pthreads-win32/contributors.html 24 * 25 * This library is free software; you can redistribute it and/or 26 * modify it under the terms of the GNU Lesser General Public 27 * License as published by the Free Software Foundation; either 28 * version 2 of the License, or (at your option) any later version. 29 * 30 * This library is distributed in the hope that it will be useful, 31 * but WITHOUT ANY WARRANTY; without even the implied warranty of 32 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 33 * Lesser General Public License for more details. 34 * 35 * You should have received a copy of the GNU Lesser General Public 36 * License along with this library in the file COPYING.LIB; 37 * if not, write to the Free Software Foundation, Inc., 38 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA 39 * 40 * -------------------------------------------------------------------------- 41 * 42 * Declare a static rwlock object, rdlock it, trywrlock it, 43 * and then unlock it again. 44 * 45 * Depends on API functions: 46 * pthread_rwlock_rdlock() 47 * pthread_rwlock_trywrlock() 48 * pthread_rwlock_unlock() 49 */ 50 51 #include "test.h" 52 53 static pthread_rwlock_t rwlock1 = PTHREAD_RWLOCK_INITIALIZER; 54 55 static int washere = 0; 56 57 static void * func(void * arg) 58 { 59 assert(pthread_rwlock_trywrlock(&rwlock1) == EBUSY); 60 61 washere = 1; 62 63 return 0; 64 } 65 66 int pthread_test_rwlock4() 67 { 68 pthread_t t; 69 70 rwlock1 = PTHREAD_RWLOCK_INITIALIZER; 71 72 assert(pthread_rwlock_rdlock(&rwlock1) == 0); 73 74 assert(pthread_create(&t, NULL, func, NULL) == 0); 75 76 pte_osThreadSleep(2000); 77 78 assert(pthread_rwlock_unlock(&rwlock1) == 0); 79 80 assert(washere == 1); 81 82 assert(pthread_join(t,NULL) == 0); 83 84 assert(pthread_rwlock_destroy(&rwlock1) == 0); 85 86 return 0; 87 } 88