131 lines
4.6 KiB
Java
131 lines
4.6 KiB
Java
/*
|
|
* Copyright (c) 2014, 2023, 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.
|
|
*/
|
|
|
|
package gc.arguments;
|
|
|
|
/*
|
|
* @test TestParallelGCThreads
|
|
* @bug 8059527 8081382
|
|
* @summary Tests argument processing for ParallelGCThreads
|
|
* @library /test/lib
|
|
* @library /
|
|
* @modules java.base/jdk.internal.misc
|
|
* java.management
|
|
* @build jdk.test.whitebox.WhiteBox
|
|
* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
|
|
* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI gc.arguments.TestParallelGCThreads
|
|
*/
|
|
|
|
import java.util.ArrayList;
|
|
import java.util.List;
|
|
import jdk.test.lib.Asserts;
|
|
import jdk.test.lib.process.OutputAnalyzer;
|
|
import jtreg.SkippedException;
|
|
import jdk.test.whitebox.gc.GC;
|
|
|
|
public class TestParallelGCThreads {
|
|
|
|
public static void main(String args[]) throws Exception {
|
|
testFlags();
|
|
testDefaultValue();
|
|
}
|
|
|
|
private static final String flagName = "ParallelGCThreads";
|
|
|
|
// uint ParallelGCThreads = 23 {product}
|
|
private static final String printFlagsFinalPattern = " *uint *" + flagName + " *:?= *(\\d+) *\\{product\\} *";
|
|
|
|
public static void testDefaultValue() throws Exception {
|
|
OutputAnalyzer output = GCArguments.executeLimitedTestJava(
|
|
"-XX:+UnlockExperimentalVMOptions", "-XX:+PrintFlagsFinal", "-version");
|
|
|
|
String value = output.firstMatch(printFlagsFinalPattern, 1);
|
|
|
|
try {
|
|
Asserts.assertNotNull(value, "Couldn't find uint flag " + flagName);
|
|
|
|
Long longValue = new Long(value);
|
|
|
|
// Sanity check that we got a non-zero value.
|
|
Asserts.assertNotEquals(longValue, "0");
|
|
|
|
output.shouldHaveExitValue(0);
|
|
} catch (Exception e) {
|
|
System.err.println(output.getOutput());
|
|
throw e;
|
|
}
|
|
}
|
|
|
|
public static void testFlags() throws Exception {
|
|
// For each parallel collector (G1, Parallel)
|
|
List<String> supportedGC = new ArrayList<String>();
|
|
|
|
if (GC.G1.isSupported()) {
|
|
supportedGC.add("G1");
|
|
}
|
|
if (GC.Parallel.isSupported()) {
|
|
supportedGC.add("Parallel");
|
|
}
|
|
|
|
if (supportedGC.isEmpty()) {
|
|
throw new SkippedException("Skipping test because none of G1/Parallel is supported.");
|
|
}
|
|
|
|
for (String gc : supportedGC) {
|
|
// Make sure the VM does not allow ParallelGCThreads set to 0
|
|
OutputAnalyzer output = GCArguments.executeLimitedTestJava(
|
|
"-XX:+Use" + gc + "GC",
|
|
"-XX:ParallelGCThreads=0",
|
|
"-XX:+PrintFlagsFinal",
|
|
"-version");
|
|
output.shouldHaveExitValue(1);
|
|
|
|
// Do some basic testing to ensure the flag updates the count
|
|
for (long i = 1; i <= 3; i++) {
|
|
long count = getParallelGCThreadCount(
|
|
"-XX:+Use" + gc + "GC",
|
|
"-XX:ParallelGCThreads=" + i,
|
|
"-XX:+PrintFlagsFinal",
|
|
"-version");
|
|
Asserts.assertEQ(count, i, "Specifying ParallelGCThreads=" + i + " for " + gc + "GC does not set the thread count properly!");
|
|
}
|
|
}
|
|
|
|
// Test the max value for ParallelGCThreads
|
|
// So setting ParallelGCThreads=2147483647 should give back 2147483647
|
|
long count = getParallelGCThreadCount(
|
|
"-XX:+UseSerialGC",
|
|
"-XX:ParallelGCThreads=2147483647",
|
|
"-XX:+PrintFlagsFinal",
|
|
"-version");
|
|
Asserts.assertEQ(count, 2147483647L, "Specifying ParallelGCThreads=2147483647 does not set the thread count properly!");
|
|
}
|
|
|
|
public static long getParallelGCThreadCount(String... flags) throws Exception {
|
|
OutputAnalyzer output = GCArguments.executeLimitedTestJava(flags);
|
|
output.shouldHaveExitValue(0);
|
|
String stdout = output.getStdout();
|
|
return FlagsValue.getFlagLongValue("ParallelGCThreads", stdout);
|
|
}
|
|
}
|