5
* --------------------------------------------------------------------------
7
* Pthreads-win32 - POSIX Threads Library for Win32
8
* Copyright(C) 1998 John E. Bossom
9
* Copyright(C) 1999,2005 Pthreads-win32 contributors
11
* Contact Email: rpj@callisto.canberra.edu.au
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
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.
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.
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
34
* --------------------------------------------------------------------------
36
* Check writer and reader locking with reader timeouts
38
* Depends on API functions:
39
* pthread_rwlock_timedrdlock()
40
* pthread_rwlock_wrlock()
41
* pthread_rwlock_unlock()
45
#include <sys/timeb.h>
47
static pthread_rwlock_t rwlock1 = PTHREAD_RWLOCK_INITIALIZER;
49
static int bankAccount = 0;
51
void * wrfunc(void * arg)
53
assert(pthread_rwlock_wrlock(&rwlock1) == 0);
56
assert(pthread_rwlock_unlock(&rwlock1) == 0);
58
return ((void *) bankAccount);
61
void * rdfunc(void * arg)
64
struct timespec abstime = { 0, 0 };
65
struct _timeb currSysTime;
66
const DWORD NANOSEC_PER_MILLISEC = 1000000;
70
abstime.tv_sec = currSysTime.time;
71
abstime.tv_nsec = NANOSEC_PER_MILLISEC * currSysTime.millitm;
77
assert(pthread_rwlock_timedrdlock(&rwlock1, &abstime) == ETIMEDOUT);
80
else if ((int) arg == 2)
83
assert(pthread_rwlock_timedrdlock(&rwlock1, &abstime) == 0);
85
assert(pthread_rwlock_unlock(&rwlock1) == 0);
105
assert(pthread_create(&wrt1, NULL, wrfunc, NULL) == 0);
107
assert(pthread_create(&rdt1, NULL, rdfunc, (void *) 1) == 0);
109
assert(pthread_create(&wrt2, NULL, wrfunc, NULL) == 0);
111
assert(pthread_create(&rdt2, NULL, rdfunc, (void *) 2) == 0);
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);
118
assert(wr1Result == 10);
119
assert(rd1Result == 0);
120
assert(wr2Result == 20);
121
assert(rd2Result == 20);