1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this
4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
5
6 /*
7 * This is a regression test for the bug that the interval timer
8 * is not initialized when _PR_CreateCPU calls PR_IntervalNow.
9 * The bug would make this test program finish prematurely,
10 * when the SHORT_TIMEOUT period expires. The correct behavior
11 * is for the test to finish when the LONG_TIMEOUT period expires.
12 */
13
14 #include "prlock.h"
15 #include "prcvar.h"
16 #include "prthread.h"
17 #include "prinrval.h"
18 #include "prlog.h"
19 #include <stdio.h>
20 #include <stdlib.h>
21
22 /* The timeouts, in milliseconds */
23 #define SHORT_TIMEOUT 1000
24 #define LONG_TIMEOUT 3000
25
26 PRLock *lock1, *lock2;
27 PRCondVar *cv1, *cv2;
28
ThreadFunc(void * arg)29 void ThreadFunc(void *arg)
30 {
31 PR_Lock(lock1);
32 PR_WaitCondVar(cv1, PR_MillisecondsToInterval(SHORT_TIMEOUT));
33 PR_Unlock(lock1);
34 }
35
main(int argc,char ** argv)36 int main(int argc, char **argv)
37 {
38 PRThread *thread;
39 PRIntervalTime start, end;
40 PRUint32 elapsed_ms;
41
42 lock1 = PR_NewLock();
43 PR_ASSERT(NULL != lock1);
44 cv1 = PR_NewCondVar(lock1);
45 PR_ASSERT(NULL != cv1);
46 lock2 = PR_NewLock();
47 PR_ASSERT(NULL != lock2);
48 cv2 = PR_NewCondVar(lock2);
49 PR_ASSERT(NULL != cv2);
50 start = PR_IntervalNow();
51 thread = PR_CreateThread(
52 PR_USER_THREAD,
53 ThreadFunc,
54 NULL,
55 PR_PRIORITY_NORMAL,
56 PR_LOCAL_THREAD,
57 PR_JOINABLE_THREAD,
58 0);
59 PR_ASSERT(NULL != thread);
60 PR_Lock(lock2);
61 PR_WaitCondVar(cv2, PR_MillisecondsToInterval(LONG_TIMEOUT));
62 PR_Unlock(lock2);
63 PR_JoinThread(thread);
64 end = PR_IntervalNow();
65 elapsed_ms = PR_IntervalToMilliseconds((PRIntervalTime)(end - start));
66 /* Allow 100ms imprecision */
67 if (elapsed_ms < LONG_TIMEOUT - 100 || elapsed_ms > LONG_TIMEOUT + 100) {
68 printf("Elapsed time should be %u ms but is %u ms\n",
69 LONG_TIMEOUT, elapsed_ms);
70 printf("FAIL\n");
71 exit(1);
72 }
73 printf("Elapsed time: %u ms, expected time: %u ms\n",
74 LONG_TIMEOUT, elapsed_ms);
75 printf("PASS\n");
76 return 0;
77 }
78