--- a/test/hotspot/jtreg/runtime/appcds/sharedStrings/LockStringTest.java Mon Jul 29 18:31:18 2019 -0400
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,98 +0,0 @@
-/*
- * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- *
- */
-
-import sun.hotspot.WhiteBox;
-
-public class LockStringTest extends Thread {
- static String lock;
- static boolean done;
- static WhiteBox wb = WhiteBox.getWhiteBox();
-
- public static void main(String[] args) throws Exception {
-
- if (wb.areSharedStringsIgnored()) {
- System.out.println("The shared strings are ignored");
- System.out.println("LockStringTest: PASS");
- return;
- }
-
- if (!wb.isShared(LockStringTest.class)) {
- throw new RuntimeException("Failed: LockStringTest class is not shared.");
- }
-
- // Note: This class is archived. All string literals (including the ones used in this class)
- // in all archived classes are interned into the CDS shared string table.
-
- doTest("StringLock", false);
- doTest("", true);
-
- // The following string has a 0 hashCode. Calling String.hashCode() could cause
- // the String.hash field to be written into, if so make sure we don't functionally
- // break.
- doTest("\u0121\u0151\u00a2\u0001\u0001\udbb2", true);
- }
-
- private static void doTest(String s, boolean hasZeroHashCode) throws Exception {
- lock = s;
- done = false;
-
- if (!wb.isShared(lock)) {
- throw new RuntimeException("Failed: String \"" + lock + "\" is not shared.");
- }
-
- if (hasZeroHashCode && lock.hashCode() != 0) {
- throw new RuntimeException("Shared string \"" + lock + "\" should have 0 hashCode, but is instead " + lock.hashCode());
- }
-
- String copy = new String(lock);
- if (lock.hashCode() != copy.hashCode()) {
- throw new RuntimeException("Shared string \"" + lock + "\" does not have the same hashCode as its non-shared copy");
- }
-
- new LockStringTest().start();
-
- synchronized(lock) {
- while (!done) {
- lock.wait();
- }
- }
- System.gc();
- System.out.println("LockStringTest: PASS");
- }
-
- public void run() {
- String shared = "LiveOak";
- synchronized (lock) {
- for (int i = 0; i < 100; i++) {
- new String(shared);
- System.gc();
- try {
- sleep(5);
- } catch (InterruptedException e) {}
- }
- done = true;
- lock.notify();
- }
- }
-}