8226757: Shenandoah: Make traversal and passive modes explicit
Reviewed-by: shade
/*
* 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
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* questions.
*
*/
/*
* @test TestLotsOfCycles
* @key gc
* @requires vm.gc.Shenandoah & !vm.graal.enabled
*
* @run main/othervm/timeout=480 -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx16m -XX:ShenandoahGCMode=passive -Dtarget=10000 -XX:+ShenandoahDegeneratedGC TestLotsOfCycles
* @run main/othervm/timeout=480 -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx16m -XX:ShenandoahGCMode=passive -Dtarget=10000 -XX:-ShenandoahDegeneratedGC TestLotsOfCycles
*
* @run main/othervm/timeout=480 -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx16m -XX:ShenandoahGCHeuristics=aggressive -Dtarget=1000 -XX:+ShenandoahOOMDuringEvacALot TestLotsOfCycles
* @run main/othervm/timeout=480 -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx16m -XX:ShenandoahGCHeuristics=aggressive -Dtarget=1000 -XX:+ShenandoahAllocFailureALot TestLotsOfCycles
* @run main/othervm/timeout=480 -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx16m -XX:ShenandoahGCHeuristics=aggressive -Dtarget=1000 TestLotsOfCycles
*
* @run main/othervm/timeout=480 -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx16m -XX:ShenandoahGCHeuristics=adaptive -Dtarget=10000 TestLotsOfCycles
* @run main/othervm/timeout=480 -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx16m -XX:ShenandoahGCMode=traversal -Dtarget=10000 TestLotsOfCycles
*
* @run main/othervm/timeout=480 -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx16m -XX:ShenandoahGCHeuristics=static -Dtarget=10000 TestLotsOfCycles
* @run main/othervm/timeout=480 -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx16m -XX:ShenandoahGCHeuristics=compact -Dtarget=1000 TestLotsOfCycles
*/
public class TestLotsOfCycles {
static final long TARGET_MB = Long.getLong("target", 10_000); // 10 Gb allocation, around 1K cycles to handle
static final long STRIDE = 100_000;
static volatile Object sink;
public static void main(String[] args) throws Exception {
long count = TARGET_MB * 1024 * 1024 / 16;
for (long c = 0; c < count; c += STRIDE) {
for (long s = 0; s < STRIDE; s++) {
sink = new Object();
}
Thread.sleep(1);
}
}
}