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test/compiler/6885584/Test6885584.java@aed8bf036ce2 (annotated)

test/compiler/6885584/Test6885584.java

Fri, 02 Dec 2011 15:11:40 -0800

author

jcoomes

date

Fri, 02 Dec 2011 15:11:40 -0800

changeset 3301

aed8bf036ce2

parent 1907

c18cbe5936b8

child 6876

710a3c8b516e

permissions

-rw-r--r--

Added tag hs23-b07 for changeset 6de8c9ba5907

never@1444	1	/*
trims@1907	2	* Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved.
never@1444	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
never@1444	4	*
never@1444	5	* This code is free software; you can redistribute it and/or modify it
never@1444	6	* under the terms of the GNU General Public License version 2 only, as
never@1444	7	* published by the Free Software Foundation.
never@1444	8	*
never@1444	9	* This code is distributed in the hope that it will be useful, but WITHOUT
never@1444	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
never@1444	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
never@1444	12	* version 2 for more details (a copy is included in the LICENSE file that
never@1444	13	* accompanied this code).
never@1444	14	*
never@1444	15	* You should have received a copy of the GNU General Public License version
never@1444	16	* 2 along with this work; if not, write to the Free Software Foundation,
never@1444	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
never@1444	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.
never@1444	22	*
never@1444	23	*/
never@1444	24
never@1444	25	/**
never@1444	26	* @test
never@1444	27	* @bug 6885584
never@1444	28	* @summary A particular class structure causes large allocation spike for jit
never@1444	29	*
never@1444	30	* @run main/othervm -Xbatch Test6885584
never@1444	31	*/
never@1444	32
never@1444	33
never@1444	34
never@1444	35	public class Test6885584 {
never@1444	36	static private int i1;
never@1444	37	static private int i2;
never@1444	38	static private int i3;
never@1444	39
never@1444	40	static int limit = Integer.MAX_VALUE - 8;
never@1444	41
never@1444	42	public static void main(String args[]) {
never@1444	43	// Run long enough to trigger an OSR
never@1444	44	for(int j = 200000; j != 0; j--) {
never@1444	45	}
never@1444	46
never@1444	47	// This must reference a field
never@1444	48	i1 = i2;
never@1444	49
never@1444	50	// The resource leak is roughly proportional to this initial value
never@1444	51	for(int k = Integer.MAX_VALUE - 1; k != 0; k--) {
never@1444	52	// Make sure the body does some work
never@1444	53	if(i2 > i3)i1 = k;
never@1444	54	if (k <= limit) break;
never@1444	55	}
never@1444	56	}
never@1444	57
never@1444	58	}