hotspot/test/runtime/8003720/Victim.java
author stefank
Tue, 27 Nov 2012 10:13:20 +0100
changeset 14582 490bb6c0df7c
permissions -rw-r--r--
8003720: NPG: Method in interpreter stack frame can be deallocated Summary: Pass down a closure during root scanning to keep the class of the method alive. Reviewed-by: coleenp, jcoomes
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/*
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 * Copyright (c) 2012, 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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public class Victim implements Test8003720.CallMe {
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    public void callme() {
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        // note: Victim.this is dead here
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        Test8003720.println("executing in loader=" + Victim.class.getClassLoader());
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        long now = System.currentTimeMillis();
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        while ((System.currentTimeMillis() - now) < Test8003720.DURATION) {
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            long count = VictimClassLoader.counter++;
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            if (count %  1000000 == 0)  System.gc();
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            if (count % 16180000 == 0)  blurb();
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            new Object[1].clone();
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        }
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    }
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    static void blurb() {
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        Test8003720.println("count=" + VictimClassLoader.counter);
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    }
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    static {
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        blather();
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    }
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    static void blather() {
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        new java.util.ArrayList<Object>(1000000);
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        Class<Victim> c = Victim.class;
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        Test8003720.println("initializing " + c + "#" + System.identityHashCode(c) + " in " + c.getClassLoader());
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    }
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}