ClearMethodStateTest.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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/*
 * @test ClearMethodStateTest
 * @bug 8006683 8007288 8022832
 * @summary testing of WB::clearMethodState()
 * @library /test/lib /
 * @modules java.base/jdk.internal.misc
 *          java.management
 *
 * @requires vm.opt.DeoptimizeALot != true
 *
 * @build sun.hotspot.WhiteBox
 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
 * @run main/othervm -Xbootclasspath/a:. -Xmixed -XX:+UnlockDiagnosticVMOptions
 *                   -XX:+WhiteBoxAPI -XX:+PrintCompilation -XX:-UseCounterDecay
 *                   compiler.whitebox.ClearMethodStateTest
 */

package compiler.whitebox;

public class ClearMethodStateTest extends CompilerWhiteBoxTest {

    public static void main(String[] args) throws Exception {
        String directive =
                "[{ match:\"*SimpleTestCaseHelper.*\", BackgroundCompilation: false }, " +
                " { match:\"*.*\", inline:\"-*SimpleTestCaseHelper.*\"}]";
        if (WHITE_BOX.addCompilerDirective(directive) != 2) {
            throw new RuntimeException("Could not add directive");
        }
        try {
            CompilerWhiteBoxTest.main(ClearMethodStateTest::new, args);
        } finally {
            WHITE_BOX.removeCompilerDirective(2);
        }
    }

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


    /**
     * Tests {@code WB::clearMethodState()} by calling it before/after
     * compilation. For non-tiered, checks that counters will be rested after
     * clearing of method state.
     *
     * @throws Exception if one of the checks fails.
     */
    @Override
    protected void test() throws Exception {

        checkNotCompiled();
        compile();
        WHITE_BOX.clearMethodState(method);
        checkCompiled();
        WHITE_BOX.clearMethodState(method);
        deoptimize();
        checkNotCompiled();
    }
}