jdk-24/test/hotspot/jtreg/gc/shenandoah/options/TestSelectiveBarrierFlags.java
Roman Kennke 8b62a2ee9d 8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
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
2018-12-10 15:47:44 +01:00

110 lines
4.2 KiB
Java

/*
* Copyright (c) 2017, 2018, Red Hat, Inc. All rights reserved.
*
* 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 TestSelectiveBarrierFlags
* @summary Test selective barrier enabling works, by aggressively compiling HelloWorld with combinations
* of barrier flags
* @key gc
* @requires vm.gc.Shenandoah
* @library /test/lib
* @run main/othervm TestSelectiveBarrierFlags -Xint
* @run main/othervm TestSelectiveBarrierFlags -Xbatch -XX:CompileThreshold=100 -XX:TieredStopAtLevel=1
* @run main/othervm TestSelectiveBarrierFlags -Xbatch -XX:CompileThreshold=100 -XX:-TieredCompilation -XX:+IgnoreUnrecognizedVMOptions -XX:+ShenandoahVerifyOptoBarriers
*/
import java.util.*;
import java.util.concurrent.*;
import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.process.OutputAnalyzer;
public class TestSelectiveBarrierFlags {
public static void main(String[] args) throws Exception {
String[][] opts = {
new String[] { "ShenandoahKeepAliveBarrier" },
new String[] { "ShenandoahWriteBarrier" },
new String[] { "ShenandoahReadBarrier" },
// StoreValRead+SATB are actually compatible, but we need to protect against
// StorveValEnqueue+SATB. TODO: Make it better.
new String[] { "ShenandoahSATBBarrier", "ShenandoahStoreValReadBarrier", "ShenandoahStoreValEnqueueBarrier" },
new String[] { "ShenandoahCASBarrier" },
new String[] { "ShenandoahAcmpBarrier" },
new String[] { "ShenandoahCloneBarrier" },
};
int size = 1;
for (String[] l : opts) {
size *= (l.length + 1);
}
ExecutorService pool = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors());
for (int c = 0; c < size; c++) {
int t = c;
List<String> conf = new ArrayList<>();
conf.addAll(Arrays.asList(args));
conf.add("-Xmx128m");
conf.add("-XX:+UnlockDiagnosticVMOptions");
conf.add("-XX:+UnlockExperimentalVMOptions");
conf.add("-XX:+UseShenandoahGC");
conf.add("-XX:ShenandoahGCHeuristics=passive");
StringBuilder sb = new StringBuilder();
for (String[] l : opts) {
// Make a choice which flag to select from the group.
// Zero means no flag is selected from the group.
int choice = t % (l.length + 1);
for (int e = 0; e < l.length; e++) {
conf.add("-XX:" + ((choice == (e + 1)) ? "+" : "-") + l[e]);
}
t = t / (l.length + 1);
}
conf.add("TestSelectiveBarrierFlags$Test");
pool.submit(() -> {
try {
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(conf.toArray(new String[0]));
OutputAnalyzer output = new OutputAnalyzer(pb.start());
output.shouldHaveExitValue(0);
} catch (Exception e) {
e.printStackTrace();
System.exit(1);
}
});
}
pool.shutdown();
pool.awaitTermination(1, TimeUnit.HOURS);
}
public static class Test {
public static void main(String... args) {
System.out.println("HelloWorld");
}
}
}