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/*
* Copyright (c) 2010, 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.
*/
/**
* @test
* @bug 6910605
* @summary C2: NullPointerException/ClassCaseException is thrown when C2 with DeoptimizeALot is used
*
* @run main/othervm -Xmx128m -XX:+IgnoreUnrecognizedVMOptions -XX:+DeoptimizeALot
* -XX:+DoEscapeAnalysis -Xbatch -XX:InlineSmallCode=2000
* compiler.c2.Test6910605_2
*/
package compiler.c2;
/*
* Added InlineSmallCode=2000 to guaranty inlining of StringBuilder::append() to allow scalar replace StringBuilder object.
*
* original test: gc/gctests/StringGC
*/
public class Test6910605_2 {
private final String toAdd = "0123456789abcdef";
private int maxLength;
private static final int numberOfThreads = 8;
private class StringAdder extends Thread {
private String s;
public void test() {
s = s + toAdd;
}
public void run() {
do {
test();
} while (s.length() < maxLength);
}
}
public void test() throws InterruptedException {
maxLength = toAdd.length() * 15000 / numberOfThreads;
StringAdder[] sa = new StringAdder[numberOfThreads];
for (int i = 0; i < numberOfThreads; i++) {
sa[i] = new StringAdder();
sa[i].start();
}
for (int i = 0; i < numberOfThreads; i++) {
sa[i].join();
}
}
public static void main(String[] args) throws InterruptedException {
Test6910605_2 t = new Test6910605_2();
t.test();
}
}
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