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test/compiler/6910618/Test.java@0803c0f69b51 (annotated)

test/compiler/6910618/Test.java

Tue, 31 Aug 2010 17:23:45 -0700

author

trims

date

Tue, 31 Aug 2010 17:23:45 -0700

changeset 2093

0803c0f69b51

parent 1907

c18cbe5936b8

child 6876

710a3c8b516e

permissions

-rw-r--r--

Added tag hs19-b06 for changeset 6c43216df135

kvn@1688	1	/*
trims@1907	2	* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
kvn@1688	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
kvn@1688	4	*
kvn@1688	5	* This code is free software; you can redistribute it and/or modify it
kvn@1688	6	* under the terms of the GNU General Public License version 2 only, as
kvn@1688	7	* published by the Free Software Foundation.
kvn@1688	8	*
kvn@1688	9	* This code is distributed in the hope that it will be useful, but WITHOUT
kvn@1688	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
kvn@1688	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
kvn@1688	12	* version 2 for more details (a copy is included in the LICENSE file that
kvn@1688	13	* accompanied this code).
kvn@1688	14	*
kvn@1688	15	* You should have received a copy of the GNU General Public License version
kvn@1688	16	* 2 along with this work; if not, write to the Free Software Foundation,
kvn@1688	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
kvn@1688	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
kvn@1688	22	*
kvn@1688	23	*/
kvn@1688	24
kvn@1688	25	/**
kvn@1688	26	* @test
kvn@1688	27	* @bug 6910605
kvn@1688	28	* @summary C2: NullPointerException/ClassCaseException is thrown when C2 with DeoptimizeALot is used
kvn@1688	29	*
kvn@1688	30	* @run main/othervm -Xmx64m -XX:+IgnoreUnrecognizedVMOptions -XX:+DeoptimizeALot -XX:+DoEscapeAnalysis -Xbatch -XX:InlineSmallCode=2000 Test
kvn@1688	31	*
kvn@1688	32	*/
kvn@1688	33
kvn@1688	34	/*
kvn@1688	35	* Added InlineSmallCode=2000 to guaranty inlining of StringBuilder::append() to allow scalar replace StringBuilder object.
kvn@1688	36	*
kvn@1688	37	* original test: gc/gctests/StringGC
kvn@1688	38	*/
kvn@1688	39
kvn@1688	40	public class Test {
kvn@1688	41	private final String toAdd = "0123456789abcdef";
kvn@1688	42	private int maxLength;
kvn@1688	43	private static final int numberOfThreads = 8;
kvn@1688	44
kvn@1688	45	private class StringAdder extends Thread {
kvn@1688	46	private String s;
kvn@1688	47
kvn@1688	48	public void test() {
kvn@1688	49	s = s + toAdd;
kvn@1688	50	}
kvn@1688	51	public void run() {
kvn@1688	52	do {
kvn@1688	53	test();
kvn@1688	54	} while (s.length() < maxLength);
kvn@1688	55	}
kvn@1688	56	}
kvn@1688	57
kvn@1688	58	public void test() throws InterruptedException {
kvn@1688	59	maxLength = toAdd.length() * 15000/ numberOfThreads;
kvn@1688	60	StringAdder[] sa = new StringAdder[numberOfThreads];
kvn@1688	61	for (int i = 0; i < numberOfThreads; i++) {
kvn@1688	62	sa[i] = new StringAdder();
kvn@1688	63	sa[i].start();
kvn@1688	64	}
kvn@1688	65	for (int i = 0; i < numberOfThreads; i++) {
kvn@1688	66	sa[i].join();
kvn@1688	67	}
kvn@1688	68	}
kvn@1688	69
kvn@1688	70	public static void main(String[] args) throws InterruptedException {
kvn@1688	71	Test t = new Test();
kvn@1688	72	t.test();
kvn@1688	73	}
kvn@1688	74	}