/*

 * Copyright (c) 2014, 2016, 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

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 */

/**

 * @test

 * @bug 8031320

 * @summary Verify that rtm locking statistics contain proper information

 *          on overall aborts and locks count and count of aborts of

 *          different types. Test also verify that VM output does not

 *          contain rtm locking statistics when it should not.

 * @library /test/lib /

 * @modules java.base/jdk.internal.misc

 *          java.management

 * @build sun.hotspot.WhiteBox

 * @run driver ClassFileInstaller sun.hotspot.WhiteBox

 *                                sun.hotspot.WhiteBox$WhiteBoxPermission

 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions

 *                   -XX:+WhiteBoxAPI

 *                   compiler.rtm.print.TestPrintPreciseRTMLockingStatistics

 */

package compiler.rtm.print;

import compiler.testlibrary.rtm.AbortProvoker;

import compiler.testlibrary.rtm.AbortType;

import compiler.testlibrary.rtm.RTMLockingStatistics;

import compiler.testlibrary.rtm.RTMTestBase;

import jdk.test.lib.Asserts;

import jdk.test.lib.process.OutputAnalyzer;

import java.util.Collections;

import java.util.LinkedList;

import java.util.List;

/**

 * Test verifies that VM output does not contain RTM locking statistics when it

 * should not (when PrintPreciseRTMLockingStatistics is off) and that with

 * -XX:+PrintPreciseRTMLockingStatistics locking statistics contains sane

 * total locks and aborts count as well as for specific abort types.

 */

public class TestPrintPreciseRTMLockingStatistics {

    public void runTestCases() throws Throwable {

        verifyNoStatistics();

        verifyStatistics();

    }

    // verify that VM output does not contain

    // rtm locking statistics

    private void verifyNoStatistics() throws Throwable {

        verifyNoStatistics(AbortType.XABORT);

        verifyNoStatistics(AbortType.XABORT,

                "-XX:-PrintPreciseRTMLockingStatistics");

        verifyNoStatistics(AbortType.XABORT, "-XX:-UseRTMLocking",

                "-XX:+PrintPreciseRTMLockingStatistics");

    }

    // verify that rtm locking statistics contain information

    // about each type of aborts

    private void verifyStatistics() throws Throwable {

        verifyAbortsCount(AbortType.XABORT);

        verifyAbortsCount(AbortType.MEM_CONFLICT);

        verifyAbortsCount(AbortType.BUF_OVERFLOW);

        verifyAbortsCount(AbortType.NESTED_ABORT);

    }

    private void verifyNoStatistics(AbortType abortProvokerType,

            String... vmOpts) throws Throwable {

        AbortProvoker provoker = abortProvokerType.provoker();

        List<String> finalVMOpts = new LinkedList<>();

        Collections.addAll(finalVMOpts, vmOpts);

        Collections.addAll(finalVMOpts, AbortProvoker.class.getName(),

                abortProvokerType.toString());

        OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(provoker,

                finalVMOpts.toArray(new String[finalVMOpts.size()]));

        outputAnalyzer.shouldHaveExitValue(0);

        List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(

                outputAnalyzer.getOutput());

        Asserts.assertEQ(statistics.size(), 0, "VM output should not contain "

                + "any RTM locking statistics");

    }

    private void verifyAbortsCount(AbortType abortType) throws Throwable {

        AbortProvoker provoker = abortType.provoker();

        OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(

                provoker,

                "-XX:+PrintPreciseRTMLockingStatistics",

                AbortProvoker.class.getName(),

                abortType.toString());

        outputAnalyzer.shouldHaveExitValue(0);

        List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(

                provoker.getMethodWithLockName(),outputAnalyzer.getOutput());

        Asserts.assertGT(statistics.size(), 0, "VM output should contain one "

                + "rtm locking statistics entry for method "

                + provoker.getMethodWithLockName());

        RTMLockingStatistics lock = statistics.get(0);

        Asserts.assertGT(lock.getTotalAborts(), 0L,

                "RTM locking statistics should contain non zero total aborts "

                + "count");

        Asserts.assertGT(lock.getAborts(abortType), 0L, String.format(

                "RTM locking statistics should contain non zero aborts count "

                + "for abort reason %s", abortType));

    }

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

        new TestPrintPreciseRTMLockingStatistics().runTestCases();

    }

}