hotspot/test/compiler/jsr292/InvokerGC.java
author jcm
Tue, 05 Apr 2016 01:46:40 -0700
changeset 37289 9989add27bf4
child 38152 80e5da81fb2c
child 37773 e5b3e9732c3c
permissions -rw-r--r--
8067247: Crash: assert(method_holder->data() == 0 ...) failed: a) MT-unsafe modification of inline cache Summary: Made invoker LambdaForm instance & its compiled form lifetime tightly coupled. Reviewed-by: vlivanov
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/*
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 * Copyright (c) 2016, 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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 * @test
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 * @bug 8067247
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 * @library /test/lib /compiler/whitebox /
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 * @run main/bootclasspath -Xcomp -Xbatch
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 *      -XX:CompileCommand=compileonly,InvokerGC::test
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 *      -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
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 *      InvokerGC
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 */
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import java.lang.invoke.*;
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import sun.hotspot.WhiteBox;
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public class InvokerGC {
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    static final WhiteBox WB = WhiteBox.getWhiteBox();
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    static MethodHandle mh;
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    static {
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        try {
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            mh = MethodHandles.lookup().findStatic(InvokerGC.class, "dummy", MethodType.methodType(void.class));
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        } catch (Exception e) {
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            throw new Error(e);
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        }
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    }
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    static void dummy() {}
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    static void test() {
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        try {
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            mh.invoke();
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        } catch (Throwable e) {
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            throw new Error(e);
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        }
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    }
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    public static void main(String[] args) throws Throwable {
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        mh.invoke(); // Pre-generate an invoker for ()V signature
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        test(); // trigger method compilation
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        test();
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        WB.fullGC(); // WB.fullGC has always clear softref policy.
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        test();
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        WB.clearInlineCaches(true); // Preserve static stubs.
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        test(); // Trigger call site re-resolution. Invoker LambdaForm should stay the same.
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        System.out.println("TEST PASSED");
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    }
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}