1 /* 2 * File: semaphore1.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 * Test Synopsis: Verify trywait() returns -1 and sets EAGAIN. 43 * - 44 * 45 * Test Method (Validation or Falsification): 46 * - Validation 47 * 48 * Requirements Tested: 49 * - 50 * 51 * Features Tested: 52 * - 53 * 54 * Cases Tested: 55 * - 56 * 57 * Description: 58 * - 59 * 60 * Environment: 61 * - 62 * 63 * Input: 64 * - None. 65 * 66 * Output: 67 * - File name, Line number, and failed expression on failure. 68 * - No output on success. 69 * 70 * Assumptions: 71 * - 72 * 73 * Pass Criteria: 74 * - Process returns zero exit status. 75 * 76 * Fail Criteria: 77 * - Process returns non-zero exit status. 78 */ 79 80 #include "test.h" 81 82 static void * 83 thr(void * arg) 84 { 85 sem_t s; 86 int result; 87 88 assert(sem_init(&s, PTHREAD_PROCESS_PRIVATE, 0) == 0); 89 90 assert((result = sem_trywait(&s)) == -1); 91 92 if ( result == -1 ) 93 { 94 int err = errno; 95 assert(err == EAGAIN); 96 } 97 98 assert((result = sem_post(&s)) == 0); 99 100 assert((result = sem_trywait(&s)) == 0); 101 102 assert(sem_post(&s) == 0); 103 104 assert(sem_destroy(&s) == 0); 105 106 return 0; 107 } 108 109 110 int pthread_test_semaphore1(void) 111 { 112 pthread_t t; 113 sem_t s; 114 int result; 115 116 assert(pthread_create(&t, NULL, thr, NULL) == 0); 117 assert(pthread_join(t, (void **)&result) == 0); 118 assert(result == 0); 119 120 assert(sem_init(&s, PTHREAD_PROCESS_PRIVATE, 0) == 0); 121 122 assert((result = sem_trywait(&s)) == -1); 123 124 if ( result == -1 ) 125 { 126 int err = errno; 127 assert(err == EAGAIN); 128 } 129 130 assert((result = sem_post(&s)) == 0); 131 132 assert((result = sem_trywait(&s)) == 0); 133 134 assert(sem_post(&s) == 0); 135 136 assert(sem_destroy(&s) == 0); 137 return 0; 138 } 139 140