8b62a2ee9d
Co-authored-by: Christine Flood <chf@redhat.com> Co-authored-by: Aleksey Shipilev <shade@redhat.com> Co-authored-by: Roland Westrelin <rwestrel@redhat.com> Co-authored-by: Zhenygu Gu <zgu@redhat.com> Co-authored-by: Andrew Haley <aph@redhat.com> Co-authored-by: Andrew Dinn <adinn@redhat.com> Co-authored-by: Mario Torre <mtorre@redhat.com> Reviewed-by: kvn, roland, shade, coleenp, lmesnik, pliden, jgeorge, ihse, erikj
97 lines
4.1 KiB
Java
97 lines
4.1 KiB
Java
/*
|
|
* Copyright (c) 2015, 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.
|
|
*
|
|
* 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 TestDynamicNumberOfGCThreads
|
|
* @bug 8017462
|
|
* @summary Ensure that UseDynamicNumberOfGCThreads runs
|
|
* @requires vm.gc=="null"
|
|
* @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 TestDynamicNumberOfGCThreads
|
|
*/
|
|
|
|
import jdk.test.lib.process.OutputAnalyzer;
|
|
import jdk.test.lib.process.ProcessTools;
|
|
import sun.hotspot.gc.GC;
|
|
|
|
public class TestDynamicNumberOfGCThreads {
|
|
public static void main(String[] args) throws Exception {
|
|
|
|
testDynamicNumberOfGCThreads("UseConcMarkSweepGC");
|
|
|
|
testDynamicNumberOfGCThreads("UseG1GC");
|
|
|
|
testDynamicNumberOfGCThreads("UseParallelGC");
|
|
|
|
if (GC.Shenandoah.isSupported()) {
|
|
testDynamicNumberOfGCThreads("UseShenandoahGC");
|
|
}
|
|
}
|
|
|
|
private static void verifyDynamicNumberOfGCThreads(OutputAnalyzer output) {
|
|
output.shouldHaveExitValue(0); // test should run succesfully
|
|
output.shouldContain("new_active_workers");
|
|
}
|
|
|
|
private static void testDynamicNumberOfGCThreads(String gcFlag) throws Exception {
|
|
// UseDynamicNumberOfGCThreads and TraceDynamicGCThreads enabled
|
|
String[] baseArgs = {"-XX:+UnlockExperimentalVMOptions", "-XX:+" + gcFlag, "-Xmx10M", "-XX:+UseDynamicNumberOfGCThreads", "-Xlog:gc+task=trace", GCTest.class.getName()};
|
|
|
|
// Base test with gc and +UseDynamicNumberOfGCThreads:
|
|
ProcessBuilder pb_enabled = ProcessTools.createJavaProcessBuilder(baseArgs);
|
|
verifyDynamicNumberOfGCThreads(new OutputAnalyzer(pb_enabled.start()));
|
|
|
|
// Ensure it also works on uniprocessors or if user specifies -XX:ParallelGCThreads=1:
|
|
String[] extraArgs = {"-XX:+UnlockDiagnosticVMOptions", "-XX:+ForceDynamicNumberOfGCThreads", "-XX:ParallelGCThreads=1"};
|
|
String[] finalArgs = new String[baseArgs.length + extraArgs.length];
|
|
System.arraycopy(extraArgs, 0, finalArgs, 0, extraArgs.length);
|
|
System.arraycopy(baseArgs, 0, finalArgs, extraArgs.length, baseArgs.length);
|
|
pb_enabled = ProcessTools.createJavaProcessBuilder(finalArgs);
|
|
verifyDynamicNumberOfGCThreads(new OutputAnalyzer(pb_enabled.start()));
|
|
|
|
// Turn on parallel reference processing
|
|
String[] parRefProcArg = {"-XX:+ParallelRefProcEnabled", "-XX:-ShowMessageBoxOnError"};
|
|
String[] parRefArgs = new String[baseArgs.length + parRefProcArg.length];
|
|
System.arraycopy(parRefProcArg, 0, parRefArgs, 0, parRefProcArg.length);
|
|
System.arraycopy(baseArgs, 0, parRefArgs, parRefProcArg.length, baseArgs.length);
|
|
pb_enabled = ProcessTools.createJavaProcessBuilder(parRefArgs);
|
|
verifyDynamicNumberOfGCThreads(new OutputAnalyzer(pb_enabled.start()));
|
|
}
|
|
|
|
static class GCTest {
|
|
private static byte[] garbage;
|
|
public static void main(String [] args) {
|
|
System.out.println("Creating garbage");
|
|
// create 128MB of garbage. This should result in at least one GC
|
|
for (int i = 0; i < 1024; i++) {
|
|
garbage = new byte[128 * 1024];
|
|
}
|
|
System.out.println("Done");
|
|
}
|
|
}
|
|
}
|