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/*
* Copyright (c) 2017, 2020, 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 TestPeriodicGC
* @summary Test that periodic GC is working
* @key gc
* @requires vm.gc.Shenandoah & !vm.graal.enabled
* @library /test/lib
* @run driver TestPeriodicGC
*/
import java.util.*;
import jdk.test.lib.Asserts;
import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.process.OutputAnalyzer;
public class TestPeriodicGC {
public static void testWith(String msg, boolean periodic, String... args) throws Exception {
String[] cmds = Arrays.copyOf(args, args.length + 2);
cmds[args.length] = TestPeriodicGC.class.getName();
cmds[args.length + 1] = "test";
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(cmds);
OutputAnalyzer output = new OutputAnalyzer(pb.start());
output.shouldHaveExitValue(0);
if (periodic && !output.getOutput().contains("Trigger: Time since last GC")) {
throw new AssertionError(msg + ": Should have periodic GC in logs");
}
if (!periodic && output.getOutput().contains("Trigger: Time since last GC")) {
throw new AssertionError(msg + ": Should not have periodic GC in logs");
}
}
public static void main(String[] args) throws Exception {
if (args.length > 0 && args[0].equals("test")) {
Thread.sleep(5000); // stay idle
return;
}
String[] enabled = new String[] {
"adaptive",
"compact",
"static",
};
for (String h : enabled) {
testWith("Zero interval with " + h,
false,
"-Xlog:gc",
"-XX:+UnlockDiagnosticVMOptions",
"-XX:+UnlockExperimentalVMOptions",
"-XX:+UseShenandoahGC",
"-XX:ShenandoahGCHeuristics=" + h,
"-XX:ShenandoahGuaranteedGCInterval=0"
);
testWith("Short interval with " + h,
true,
"-Xlog:gc",
"-XX:+UnlockDiagnosticVMOptions",
"-XX:+UnlockExperimentalVMOptions",
"-XX:+UseShenandoahGC",
"-XX:ShenandoahGCHeuristics=" + h,
"-XX:ShenandoahGuaranteedGCInterval=1000"
);
testWith("Long interval with " + h,
false,
"-Xlog:gc",
"-XX:+UnlockDiagnosticVMOptions",
"-XX:+UnlockExperimentalVMOptions",
"-XX:+UseShenandoahGC",
"-XX:ShenandoahGCHeuristics=" + h,
"-XX:ShenandoahGuaranteedGCInterval=100000" // deliberately too long
);
}
testWith("Zero interval with iu mode",
false,
"-Xlog:gc",
"-XX:+UnlockDiagnosticVMOptions",
"-XX:+UnlockExperimentalVMOptions",
"-XX:+UseShenandoahGC",
"-XX:ShenandoahGCMode=iu",
"-XX:ShenandoahGuaranteedGCInterval=0"
);
testWith("Short interval with iu mode",
true,
"-Xlog:gc",
"-XX:+UnlockDiagnosticVMOptions",
"-XX:+UnlockExperimentalVMOptions",
"-XX:+UseShenandoahGC",
"-XX:ShenandoahGCMode=iu",
"-XX:ShenandoahGuaranteedGCInterval=1000"
);
testWith("Long interval with iu mode",
false,
"-Xlog:gc",
"-XX:+UnlockDiagnosticVMOptions",
"-XX:+UnlockExperimentalVMOptions",
"-XX:+UseShenandoahGC",
"-XX:ShenandoahGCMode=iu",
"-XX:ShenandoahGuaranteedGCInterval=100000" // deliberately too long
);
testWith("Short interval with aggressive",
false,
"-Xlog:gc",
"-XX:+UnlockDiagnosticVMOptions",
"-XX:+UnlockExperimentalVMOptions",
"-XX:+UseShenandoahGC",
"-XX:ShenandoahGCHeuristics=aggressive",
"-XX:ShenandoahGuaranteedGCInterval=1000"
);
testWith("Zero interval with passive",
false,
"-Xlog:gc",
"-XX:+UnlockDiagnosticVMOptions",
"-XX:+UnlockExperimentalVMOptions",
"-XX:+UseShenandoahGC",
"-XX:ShenandoahGCMode=passive",
"-XX:ShenandoahGuaranteedGCInterval=0"
);
testWith("Short interval with passive",
false,
"-Xlog:gc",
"-XX:+UnlockDiagnosticVMOptions",
"-XX:+UnlockExperimentalVMOptions",
"-XX:+UseShenandoahGC",
"-XX:ShenandoahGCMode=passive",
"-XX:ShenandoahGuaranteedGCInterval=1000"
);
}
}
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