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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

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 *

 * 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 gc.ergonomics;

/*

 * @test TestInitialGCThreadLogging

 * @bug 8157240

 * @summary Check trace logging of initial GC threads.

 * @key gc

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

 * @library /test/lib

 * @build sun.hotspot.WhiteBox

 * @run driver ClassFileInstaller sun.hotspot.WhiteBox sun.hotspot.WhiteBox$WhiteBoxPermission

 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI gc.ergonomics.TestInitialGCThreadLogging

 */

import jdk.test.lib.process.ProcessTools;

import jdk.test.lib.process.OutputAnalyzer;

import jtreg.SkippedException;

import sun.hotspot.gc.GC;

public class TestInitialGCThreadLogging {

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

    boolean noneGCSupported = true;

    if (GC.G1.isSupported()) {

      noneGCSupported = false;

      testInitialGCThreadLogging("UseG1GC", "GC Thread");

    }

    if (GC.Parallel.isSupported()) {

      noneGCSupported = false;

      testInitialGCThreadLogging("UseParallelGC", "GC Thread");

    }

    if (GC.Shenandoah.isSupported()) {

      noneGCSupported = false;

      testInitialGCThreadLogging("UseShenandoahGC", "Shenandoah GC Thread");

    }

    if (noneGCSupported) {

    }

  }

  private static void verifyDynamicNumberOfGCThreads(OutputAnalyzer output, String threadName) {

    output.shouldHaveExitValue(0); // test should run succesfully

    output.shouldContain(threadName);

  }

  private static void testInitialGCThreadLogging(String gcFlag, String threadName) throws Exception {

    // UseDynamicNumberOfGCThreads and TraceDynamicGCThreads enabled

    String[] baseArgs = {"-XX:+UnlockExperimentalVMOptions", "-XX:+" + gcFlag, "-Xmx10M", "-XX:+UseDynamicNumberOfGCThreads", "-Xlog:gc+task=trace", "-version"};

    // Base test with gc and +UseDynamicNumberOfGCThreads:

    ProcessBuilder pb_enabled = ProcessTools.createJavaProcessBuilder(baseArgs);

    verifyDynamicNumberOfGCThreads(new OutputAnalyzer(pb_enabled.start()), threadName);

  }

}