hotspot/test/compiler/6885584/Test6885584.java
author jlaskey
Tue, 23 Jul 2013 12:00:29 -0300
changeset 19089 51cfdcf21d35
parent 5547 f4b087cbb361
permissions -rw-r--r--
8021130: Comments need to be tokens Reviewed-by: lagergren, attila Contributed-by: james.laskey@oracle.com
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/*
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 * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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/**
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 * @test
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 * @bug 6885584
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 * @summary A particular class structure causes large allocation spike for jit
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 *
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 * @run main/othervm -Xbatch Test6885584
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 */
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public class Test6885584 {
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   static private int i1;
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   static private int i2;
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   static private int i3;
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    static int limit = Integer.MAX_VALUE - 8;
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   public static void main(String args[]) {
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       // Run long enough to trigger an OSR
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       for(int j = 200000; j != 0; j--) {
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       }
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       // This must reference a field
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       i1 = i2;
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       // The resource leak is roughly proportional to this initial value
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       for(int k = Integer.MAX_VALUE - 1; k != 0; k--) {
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           // Make sure the body does some work
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           if(i2 > i3)i1 = k;
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           if (k <= limit) break;
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       }
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   }
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}