summaryrefslogtreecommitdiffstats
path: root/nsprpub/pr/tests/initclk.c
diff options
context:
space:
mode:
Diffstat (limited to 'nsprpub/pr/tests/initclk.c')
-rw-r--r--nsprpub/pr/tests/initclk.c77
1 files changed, 77 insertions, 0 deletions
diff --git a/nsprpub/pr/tests/initclk.c b/nsprpub/pr/tests/initclk.c
new file mode 100644
index 000000000..37e4c0504
--- /dev/null
+++ b/nsprpub/pr/tests/initclk.c
@@ -0,0 +1,77 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+ * This is a regression test for the bug that the interval timer
+ * is not initialized when _PR_CreateCPU calls PR_IntervalNow.
+ * The bug would make this test program finish prematurely,
+ * when the SHORT_TIMEOUT period expires. The correct behavior
+ * is for the test to finish when the LONG_TIMEOUT period expires.
+ */
+
+#include "prlock.h"
+#include "prcvar.h"
+#include "prthread.h"
+#include "prinrval.h"
+#include "prlog.h"
+#include <stdio.h>
+#include <stdlib.h>
+
+/* The timeouts, in milliseconds */
+#define SHORT_TIMEOUT 1000
+#define LONG_TIMEOUT 3000
+
+PRLock *lock1, *lock2;
+PRCondVar *cv1, *cv2;
+
+void ThreadFunc(void *arg)
+{
+ PR_Lock(lock1);
+ PR_WaitCondVar(cv1, PR_MillisecondsToInterval(SHORT_TIMEOUT));
+ PR_Unlock(lock1);
+}
+
+int main(int argc, char **argv)
+{
+ PRThread *thread;
+ PRIntervalTime start, end;
+ PRUint32 elapsed_ms;
+
+ lock1 = PR_NewLock();
+ PR_ASSERT(NULL != lock1);
+ cv1 = PR_NewCondVar(lock1);
+ PR_ASSERT(NULL != cv1);
+ lock2 = PR_NewLock();
+ PR_ASSERT(NULL != lock2);
+ cv2 = PR_NewCondVar(lock2);
+ PR_ASSERT(NULL != cv2);
+ start = PR_IntervalNow();
+ thread = PR_CreateThread(
+ PR_USER_THREAD,
+ ThreadFunc,
+ NULL,
+ PR_PRIORITY_NORMAL,
+ PR_LOCAL_THREAD,
+ PR_JOINABLE_THREAD,
+ 0);
+ PR_ASSERT(NULL != thread);
+ PR_Lock(lock2);
+ PR_WaitCondVar(cv2, PR_MillisecondsToInterval(LONG_TIMEOUT));
+ PR_Unlock(lock2);
+ PR_JoinThread(thread);
+ end = PR_IntervalNow();
+ elapsed_ms = PR_IntervalToMilliseconds((PRIntervalTime)(end - start));
+ /* Allow 100ms imprecision */
+ if (elapsed_ms < LONG_TIMEOUT - 100 || elapsed_ms > LONG_TIMEOUT + 100) {
+ printf("Elapsed time should be %u ms but is %u ms\n",
+ LONG_TIMEOUT, elapsed_ms);
+ printf("FAIL\n");
+ exit(1);
+ }
+ printf("Elapsed time: %u ms, expected time: %u ms\n",
+ LONG_TIMEOUT, elapsed_ms);
+ printf("PASS\n");
+ return 0;
+}