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Java example source code file (EnqueueMethodForCompilationTest.java)

This example Java source code file (EnqueueMethodForCompilationTest.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

comp_level_any, comp_level_none, compilerwhiteboxtest, enqueuemethodforcompilationtest, exception, override, runtimeexception, testcase

The EnqueueMethodForCompilationTest.java Java example source code

/*
 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
 * @test EnqueueMethodForCompilationTest
 * @bug 8006683 8007288 8022832
 * @library /testlibrary /testlibrary/whitebox
 * @build EnqueueMethodForCompilationTest
 * @run main ClassFileInstaller sun.hotspot.WhiteBox
 * @run main/othervm/timeout=600 -Xbootclasspath/a:. -Xmixed -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,TestCase$Helper::* EnqueueMethodForCompilationTest
 * @summary testing of WB::enqueueMethodForCompilation()
 * @author igor.ignatyev@oracle.com
 */
public class EnqueueMethodForCompilationTest extends CompilerWhiteBoxTest {

    public static void main(String[] args) throws Exception {
        for (TestCase test : TestCase.values()) {
            new EnqueueMethodForCompilationTest(test).runTest();
        }
    }

    public EnqueueMethodForCompilationTest(TestCase testCase) {
        super(testCase);
        // to prevent inlining of #method
        WHITE_BOX.testSetDontInlineMethod(method, true);
    }

    @Override
    protected void test() throws Exception {
        checkNotCompiled();

        // method can not be compiled on level 'none'
        WHITE_BOX.enqueueMethodForCompilation(method, COMP_LEVEL_NONE);
        if (isCompilable(COMP_LEVEL_NONE)) {
            throw new RuntimeException(method
                    + " is compilable at level COMP_LEVEL_NONE");
        }
        checkNotCompiled();

        // COMP_LEVEL_ANY is inapplicable as level for compilation
        WHITE_BOX.enqueueMethodForCompilation(method, COMP_LEVEL_ANY);
        checkNotCompiled();

        // not existing comp level
        WHITE_BOX.enqueueMethodForCompilation(method, 42);
        checkNotCompiled();

        compile();
        checkCompiled();

        int compLevel = getCompLevel();
        int bci = WHITE_BOX.getMethodEntryBci(method);
        deoptimize();
        checkNotCompiled();
        WHITE_BOX.clearMethodState(method);

        WHITE_BOX.enqueueMethodForCompilation(method, compLevel, bci);
        checkCompiled();
        deoptimize();
        checkNotCompiled();

        compile();
        checkCompiled();
        deoptimize();
        checkNotCompiled();
    }
}

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