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/*
* 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 TestHeapUncommit
* @summary Acceptance tests: collector can withstand allocation
* @key gc randomness
* @requires vm.gc.Shenandoah & !vm.graal.enabled
* @library /test/lib
*
* @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
* -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
* -XX:+ShenandoahDegeneratedGC -XX:+ShenandoahVerify
* TestHeapUncommit
*
* @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
* -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
* -XX:-ShenandoahDegeneratedGC -XX:+ShenandoahVerify
* TestHeapUncommit
*
* @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
* -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
* -XX:+ShenandoahDegeneratedGC
* TestHeapUncommit
*
* @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
* -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
* -XX:-ShenandoahDegeneratedGC
* TestHeapUncommit
*/
/*
* @test TestHeapUncommit
* @summary Acceptance tests: collector can withstand allocation
* @key gc randomness
* @requires vm.gc.Shenandoah & !vm.graal.enabled
* @library /test/lib
*
* @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
* -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
* -XX:+ShenandoahVerify
* TestHeapUncommit
*
* @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
* -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
* TestHeapUncommit
*
* @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
* -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=static
* TestHeapUncommit
*
* @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
* -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact
* TestHeapUncommit
*
* @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
* -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive
* TestHeapUncommit
*
* @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
* -XX:+UseShenandoahGC
* -XX:-UseTLAB -XX:+ShenandoahVerify
* TestHeapUncommit
*/
/*
* @test TestHeapUncommit
* @summary Acceptance tests: collector can withstand allocation
* @key gc randomness
* @requires vm.gc.Shenandoah & !vm.graal.enabled
* @library /test/lib
*
* @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
* -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu
* -XX:+ShenandoahVerify
* TestHeapUncommit
*
* @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
* -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu
* TestHeapUncommit
*
* @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0
* -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive
* TestHeapUncommit
*/
/*
* @test TestHeapUncommit
* @key gc randomness
* @requires vm.gc.Shenandoah & !vm.graal.enabled & (vm.bits == "64")
* @library /test/lib
*
* @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0 -XX:+UseLargePages
* -XX:+UseShenandoahGC
* -XX:+ShenandoahVerify
* TestHeapUncommit
*
* @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0 -XX:+UseLargePages
* -XX:+UseShenandoahGC
* TestHeapUncommit
*
* @run main/othervm -Xmx1g -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+ShenandoahUncommit -XX:ShenandoahUncommitDelay=0 -XX:+UseLargePages
* -XX:+UseShenandoahGC
* -XX:-UseTLAB -XX:+ShenandoahVerify
* TestHeapUncommit
*/
import java.util.Random;
import jdk.test.lib.Utils;
public class TestHeapUncommit {
static final long TARGET_MB = Long.getLong("target", 10_000); // 10 Gb allocation
static volatile Object sink;
public static void main(String[] args) throws Exception {
final int min = 0;
final int max = 384 * 1024;
long count = TARGET_MB * 1024 * 1024 / (16 + 4 * (min + (max - min) / 2));
Random r = Utils.getRandomInstance();
for (long c = 0; c < count; c++) {
sink = new int[min + r.nextInt(max - min)];
}
}
}
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