1 /*
2 * File: semaphore1.c
3 *
4 *
5 * --------------------------------------------------------------------------
6 *
7 * Pthreads-win32 - POSIX Threads Library for Win32
8 * Copyright(C) 1998 John E. Bossom
9 * Copyright(C) 1999,2005 Pthreads-win32 contributors
10 *
11 * Contact Email: rpj@callisto.canberra.edu.au
12 *
13 * The current list of contributors is contained
14 * in the file CONTRIBUTORS included with the source
15 * code distribution. The list can also be seen at the
16 * following World Wide Web location:
17 * http://sources.redhat.com/pthreads-win32/contributors.html
18 *
19 * This library is free software; you can redistribute it and/or
20 * modify it under the terms of the GNU Lesser General Public
21 * License as published by the Free Software Foundation; either
22 * version 2 of the License, or (at your option) any later version.
23 *
24 * This library is distributed in the hope that it will be useful,
25 * but WITHOUT ANY WARRANTY; without even the implied warranty of
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
27 * Lesser General Public License for more details.
28 *
29 * You should have received a copy of the GNU Lesser General Public
30 * License along with this library in the file COPYING.LIB;
31 * if not, write to the Free Software Foundation, Inc.,
32 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
33 *
34 * --------------------------------------------------------------------------
35 *
36 * Test Synopsis: Verify trywait() returns -1 and sets EAGAIN.
37 * -
38 *
39 * Test Method (Validation or Falsification):
40 * - Validation
41 *
42 * Requirements Tested:
43 * -
44 *
45 * Features Tested:
46 * -
47 *
48 * Cases Tested:
49 * -
50 *
51 * Description:
52 * -
53 *
54 * Environment:
55 * -
56 *
57 * Input:
58 * - None.
59 *
60 * Output:
61 * - File name, Line number, and failed expression on failure.
62 * - No output on success.
63 *
64 * Assumptions:
65 * -
66 *
67 * Pass Criteria:
68 * - Process returns zero exit status.
69 *
70 * Fail Criteria:
71 * - Process returns non-zero exit status.
72 */
73
74 #include "test.h"
75
76 void *
thr(void * arg)77 thr(void * arg)
78 {
79 sem_t s;
80 int result;
81
82 assert(sem_init(&s, PTHREAD_PROCESS_PRIVATE, 0) == 0);
83
84 assert((result = sem_trywait(&s)) == -1);
85
86 if ( result == -1 )
87 {
88 int err = errno;
89 printf("thread: sem_trywait 1: expecting error %s: got %s\n",
90 error_string[EAGAIN], error_string[err]); fflush(stdout);
91 assert(err == EAGAIN);
92 }
93 else
94 {
95 printf("thread: ok 1\n");
96 }
97
98 assert((result = sem_post(&s)) == 0);
99
100 assert((result = sem_trywait(&s)) == 0);
101
102 if ( result == -1 )
103 {
104 perror("thread: sem_trywait 2");
105 }
106 else
107 {
108 printf("thread: ok 2\n");
109 }
110
111 assert(sem_post(&s) == 0);
112
113 return 0;
114 }
115
116
117 int
main()118 main()
119 {
120 pthread_t t;
121 sem_t s;
122 int result;
123
124 assert(pthread_create(&t, NULL, thr, NULL) == 0);
125 assert(pthread_join(t, (void **)&result) == 0);
126 assert(result == 0);
127
128 assert(sem_init(&s, PTHREAD_PROCESS_PRIVATE, 0) == 0);
129
130 assert((result = sem_trywait(&s)) == -1);
131
132 if ( result == -1 )
133 {
134 int err = errno;
135 printf("main: sem_trywait 1: expecting error %s: got %s\n",
136 error_string[EAGAIN], error_string[err]); fflush(stdout);
137 assert(err == EAGAIN);
138 }
139 else
140 {
141 printf("main: ok 1\n");
142 }
143
144 assert((result = sem_post(&s)) == 0);
145
146 assert((result = sem_trywait(&s)) == 0);
147
148 if ( result == -1 )
149 {
150 perror("main: sem_trywait 2");
151 }
152 else
153 {
154 printf("main: ok 2\n");
155 }
156
157 assert(sem_post(&s) == 0);
158
159 return 0;
160 }
161
162