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8242271: Shenandoah: add test to verify GC mode unlock

Reviewed-by: rkennke
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shipilev committed Apr 7, 2020
1 parent 76b1119 commit 5fff119dde6a1f08e8f564c6e7db1edd3334cc8e
Showing with 115 additions and 0 deletions.
  1. +115 −0 test/hotspot/jtreg/gc/shenandoah/options/TestModeUnlock.java
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/*
* Copyright (c) 2020, Red Hat, Inc. 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 TestModeUnlock
* @summary Test that Shenandoah modes are unlocked properly
* @key gc
* @requires vm.gc.Shenandoah & !vm.graal.enabled
* @library /test/lib
* @modules java.base/jdk.internal.misc
* java.management
* @run driver TestModeUnlock
*/

import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.process.OutputAnalyzer;

public class TestModeUnlock {

enum Mode {
PRODUCT,
DIAGNOSTIC,
EXPERIMENTAL,
}

public static void main(String[] args) throws Exception {
testWith("-XX:ShenandoahGCMode=normal", Mode.PRODUCT);
testWith("-XX:ShenandoahGCMode=iu", Mode.EXPERIMENTAL);
testWith("-XX:ShenandoahGCMode=passive", Mode.DIAGNOSTIC);
}

private static void testWith(String h, Mode mode) throws Exception {
if (false) { // When ShenandoahGC is experimental flag, this makes no sense to test
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
"-XX:-UnlockDiagnosticVMOptions",
"-XX:-UnlockExperimentalVMOptions",
"-XX:+UseShenandoahGC",
h,
"-version"
);
OutputAnalyzer output = new OutputAnalyzer(pb.start());
switch (mode) {
case PRODUCT:
output.shouldHaveExitValue(0);
break;
case DIAGNOSTIC:
case EXPERIMENTAL:
output.shouldNotHaveExitValue(0);
break;
}
}

if (false) { // When ShenandoahGC is experimental flag, this makes no sense to test
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
"-XX:+UnlockDiagnosticVMOptions",
"-XX:-UnlockExperimentalVMOptions",
"-XX:+UseShenandoahGC",
h,
"-version"
);
OutputAnalyzer output = new OutputAnalyzer(pb.start());
switch (mode) {
case PRODUCT:
case DIAGNOSTIC:
output.shouldHaveExitValue(0);
break;
case EXPERIMENTAL:
output.shouldNotHaveExitValue(0);
break;
}
}

{
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
"-XX:-UnlockDiagnosticVMOptions",
"-XX:+UnlockExperimentalVMOptions",
"-XX:+UseShenandoahGC",
h,
"-version"
);
OutputAnalyzer output = new OutputAnalyzer(pb.start());
switch (mode) {
case PRODUCT:
case EXPERIMENTAL:
output.shouldHaveExitValue(0);
break;
case DIAGNOSTIC:
output.shouldNotHaveExitValue(0);
break;
}
}
}

}

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