1 /*
2 * rwlock6_t.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 * Check writer and reader locking with reader timeouts
37 *
38 * Depends on API functions:
39 * pthread_rwlock_timedrdlock()
40 * pthread_rwlock_wrlock()
41 * pthread_rwlock_unlock()
42 */
43
44 #include "test.h"
45 #include <sys/timeb.h>
46
47 static pthread_rwlock_t rwlock1 = PTHREAD_RWLOCK_INITIALIZER;
48
49 static volatile int bankAccount = 0;
50
wrfunc(void * arg)51 void * wrfunc(void * arg)
52 {
53 assert(pthread_rwlock_wrlock(&rwlock1) == 0);
54 Sleep(2000);
55 bankAccount += 10;
56 assert(pthread_rwlock_unlock(&rwlock1) == 0);
57
58 return ((void *) (size_t) bankAccount);
59 }
60
rdfunc(void * arg)61 void * rdfunc(void * arg)
62 {
63 int ba = -1;
64 struct timespec abstime = { 0, 0 };
65 struct _timeb currSysTime;
66 const DWORD NANOSEC_PER_MILLISEC = 1000000;
67
68 _ftime(&currSysTime);
69
70 abstime.tv_sec = currSysTime.time;
71 abstime.tv_nsec = NANOSEC_PER_MILLISEC * currSysTime.millitm;
72
73
74 if ((int) (size_t) arg == 1)
75 {
76 abstime.tv_sec += 1;
77 assert(pthread_rwlock_timedrdlock(&rwlock1, &abstime) == ETIMEDOUT);
78 ba = 0;
79 }
80 else if ((int) (size_t) arg == 2)
81 {
82 abstime.tv_sec += 3;
83 assert(pthread_rwlock_timedrdlock(&rwlock1, &abstime) == 0);
84 ba = bankAccount;
85 assert(pthread_rwlock_unlock(&rwlock1) == 0);
86 }
87
88 return ((void *) (size_t) ba);
89 }
90
91 int
main()92 main()
93 {
94 pthread_t wrt1;
95 pthread_t wrt2;
96 pthread_t rdt1;
97 pthread_t rdt2;
98 intptr_t wr1Result = 0;
99 intptr_t wr2Result = 0;
100 intptr_t rd1Result = 0;
101 intptr_t rd2Result = 0;
102
103 bankAccount = 0;
104
105 assert(pthread_create(&wrt1, NULL, wrfunc, NULL) == 0);
106 Sleep(500);
107 assert(pthread_create(&rdt1, NULL, rdfunc, (void *) 1) == 0);
108 Sleep(500);
109 assert(pthread_create(&wrt2, NULL, wrfunc, NULL) == 0);
110 Sleep(1000);
111 assert(pthread_create(&rdt2, NULL, rdfunc, (void *) 2) == 0);
112
113 assert(pthread_join(wrt1, (void **) &wr1Result) == 0);
114 assert(pthread_join(rdt1, (void **) &rd1Result) == 0);
115 assert(pthread_join(wrt2, (void **) &wr2Result) == 0);
116 assert(pthread_join(rdt2, (void **) &rd2Result) == 0);
117
118 assert(wr1Result == 10);
119 assert(rd1Result == 0);
120 assert(wr2Result == 20);
121 assert(rd2Result == 20);
122
123 return 0;
124 }
125
126
127