/*
* 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
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*/
/**
* @ 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 : + IgnoreUnrecognizedVMOptions - XX : InlineSmallCode = 2000
* compiler . c2 . Test6910605_2
*/
package compiler.c2;
/*
* Added InlineSmallCode = 2000 to guarantee 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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