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 0000000000..65d8b17e71
--- /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;
+}