22409a5704
Mark in PcDesc call sites which return oop and save the result oop across objects reallocation during deoptimization. Reviewed-by: never
75 lines
2.6 KiB
Java
75 lines
2.6 KiB
Java
/*
|
|
* Copyright 2010 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
|
* CA 95054 USA or visit www.sun.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 -Xmx64m -XX:+IgnoreUnrecognizedVMOptions -XX:+DeoptimizeALot -XX:+DoEscapeAnalysis -Xbatch -XX:InlineSmallCode=2000 Test
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Added InlineSmallCode=2000 to guaranty inlining of StringBuilder::append() to allow scalar replace StringBuilder object.
|
|
*
|
|
* original test: gc/gctests/StringGC
|
|
*/
|
|
|
|
public class Test {
|
|
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 {
|
|
Test t = new Test();
|
|
t.test();
|
|
}
|
|
}
|