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 * Copyright (c) 2013, 2018, 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.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * 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.

 *

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package jdk.jfr.event.compiler;

import java.lang.reflect.Method;

import java.util.List;

import jdk.jfr.Recording;

import jdk.jfr.consumer.RecordedEvent;

import jdk.test.lib.Utils;

import jdk.test.lib.jfr.EventNames;

import jdk.test.lib.jfr.Events;

import sun.hotspot.WhiteBox;

 * @test

 * @key jfr

 * @requires vm.compMode!="Xint" & vm.flavor == "server" & (vm.opt.TieredStopAtLevel == 4 | vm.opt.TieredStopAtLevel == null)

 * @library /test/lib

 * @build sun.hotspot.WhiteBox

 * @run main ClassFileInstaller sun.hotspot.WhiteBox

 *     sun.hotspot.WhiteBox$WhiteBoxPermission

 * @run main/othervm -Xbootclasspath/a:.

 *     -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI

 *     -XX:CompileOnly=jdk.jfr.event.compiler.TestCompilerPhase::dummyMethod

 *     -XX:+SegmentedCodeCache -Xbootclasspath/a:.

 *     jdk.jfr.event.compiler.TestCompilerPhase

 */

public class TestCompilerPhase {

    private final static String EVENT_NAME = EventNames.CompilerPhase;

    private final static String METHOD_NAME = "dummyMethod";

    private static final int COMP_LEVEL_SIMPLE = 1;

    private static final int COMP_LEVEL_FULL_OPTIMIZATION = 4;

    public static void main(String[] args) throws Exception {

        Recording recording = new Recording();

        recording.enable(EVENT_NAME);

        recording.start();

        // Provoke compilation

        Method mtd = TestCompilerPhase.class.getDeclaredMethod(METHOD_NAME, new Class[0]);

        WhiteBox WB = WhiteBox.getWhiteBox();

        String directive = "[{ match: \"" + TestCompilerPhase.class.getName().replace('.', '/')

                + "." + METHOD_NAME + "\", " + "BackgroundCompilation: false }]";

        WB.addCompilerDirective(directive);

        if (!WB.enqueueMethodForCompilation(mtd, COMP_LEVEL_FULL_OPTIMIZATION)) {

            WB.enqueueMethodForCompilation(mtd, COMP_LEVEL_SIMPLE);

        }

        Utils.waitForCondition(() -> WB.isMethodCompiled(mtd));

        dummyMethod();

        recording.stop();

        List<RecordedEvent> events = Events.fromRecording(recording);

        Events.hasEvents(events);

        for (RecordedEvent event : events) {

            System.out.println("Event:" + event);

            Events.assertField(event, "phase").notEmpty();

            Events.assertField(event, "compileId").atLeast(0);

            Events.assertField(event, "phaseLevel").atLeast((short)0).atMost((short)4);

            Events.assertEventThread(event);

        }

    }

    static void dummyMethod() {

        System.out.println("hello!");

    }

}