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/*
* Copyright (c) 2007, 2020, Oracle and/or its affiliates. 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
* @key stress randomness
*
* @summary converted from VM Testbase gc/vector/SimpleGC.
* VM Testbase keywords: [gc, stress, stressopt, nonconcurrent, monitoring]
*
* @library /vmTestbase
* /test/lib
* @run main/othervm gc.vector.SimpleGC.SimpleGC -ms high
*/
package gc.vector.SimpleGC;
import nsk.share.gc.GC;
import nsk.share.gc.GCTestBase;
import nsk.share.gc.gp.GarbageProducer;
import nsk.share.gc.gp.GarbageProducerAware;
import nsk.share.gc.gp.GarbageUtils;
import nsk.share.gc.gp.MemoryStrategy;
import nsk.share.gc.gp.MemoryStrategyAware;
import nsk.share.runner.RunParams;
import nsk.share.test.Stresser;
/**
* Test that fills out a certain amount of memory with objects of a given type.
* The test accepts MemoryStrategy, type of objects and stress options
* as command line args.
*/
public class SimpleGC extends GCTestBase implements GarbageProducerAware, MemoryStrategyAware {
private GarbageProducer garbageProducer;
private MemoryStrategy memoryStrategy;
/**
* Garbage link.
* The field is static to prevent possible compiler optimizations.
*/
public static Object[] array;
@Override
public void run() {
long memoryAmount = runParams.getTestMemory();
long size = GarbageUtils.getArraySize(memoryAmount, memoryStrategy);
int length = GarbageUtils.getArrayCount(memoryAmount, memoryStrategy);
Object[] garbage = new Object[length];
array = garbage;
log.info("Memory to fill out: " + memoryAmount);
log.info("Array lenght: " + garbage.length);
log.info("Object size: " + size);
log.info("Garbage producer: " + garbageProducer.getClass().getCanonicalName());
log.info("Memory Strategy: " + memoryStrategy);
Stresser stresser = new Stresser(runParams.getStressOptions());
stresser.start(10 * garbage.length);
int iteration = 0;
try {
while (stresser.iteration()) {
for (int i = 0; i < garbage.length && stresser.continueExecution(); ++i) {
garbage[i] = garbageProducer.create(size);
}
for (int i = 0; i < garbage.length; ++i) {
garbage[i] = null;
}
iteration++;
if (iteration % 1000 == 0) {
log.info(" iteration # " + iteration);
}
}
} catch (OutOfMemoryError oom) {
// normally that should never be thrown
log.info("OutOfMemory after " + iteration + " iterations");
throw oom;
} finally {
stresser.finish();
}
log.info("Success. Total iterations: " + iteration);
}
@Override
public final void setGarbageProducer(GarbageProducer garbageProducer) {
this.garbageProducer = garbageProducer;
}
@Override
public final void setMemoryStrategy(MemoryStrategy memoryStrategy) {
this.memoryStrategy = memoryStrategy;
}
public static void main(String[] args) {
RunParams.getInstance().setRunMemDiagThread(true);
GC.runTest(new SimpleGC(), args);
}
}
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