| 1 | /*
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| 2 | * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved.
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| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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| 4 | *
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| 5 | * This code is free software; you can redistribute it and/or modify it
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| 6 | * under the terms of the GNU General Public License version 2 only, as
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| 7 | * published by the Free Software Foundation.
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| 8 | *
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| 9 | * This code is distributed in the hope that it will be useful, but WITHOUT
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| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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| 12 | * version 2 for more details (a copy is included in the LICENSE file that
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| 13 | * accompanied this code).
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| 14 | *
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| 15 | * You should have received a copy of the GNU General Public License version
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| 16 | * 2 along with this work; if not, write to the Free Software Foundation,
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| 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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| 18 | *
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| 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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| 20 | * or visit www.oracle.com if you need additional information or have any
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| 21 | * questions.
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| 22 | *
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| 23 | */
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| 24 |
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| 25 | /**
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| 26 | * @test
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| 27 | * @bug 6885584
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| 28 | * @summary A particular class structure causes large allocation spike for jit
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| 29 | *
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| 30 | * @run main/othervm -Xbatch Test6885584
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| 31 | */
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| 32 |
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| 33 |
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| 34 |
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| 35 | public class Test6885584 {
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| 36 | static private int i1;
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| 37 | static private int i2;
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| 38 | static private int i3;
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| 39 |
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| 40 | static int limit = Integer.MAX_VALUE - 8;
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| 41 |
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| 42 | public static void main(String args[]) {
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| 43 | // Run long enough to trigger an OSR
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| 44 | for(int j = 200000; j != 0; j--) {
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| 45 | }
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| 46 |
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| 47 | // This must reference a field
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| 48 | i1 = i2;
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| 49 |
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| 50 | // The resource leak is roughly proportional to this initial value
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| 51 | for(int k = Integer.MAX_VALUE - 1; k != 0; k--) {
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| 52 | // Make sure the body does some work
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| 53 | if(i2 > i3)i1 = k;
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| 54 | if (k <= limit) break;
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| 55 | }
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| 56 | }
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| 57 |
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| 58 | }
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