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/*
* Copyright (c) 2007, 2018, 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.
*/
package nsk.jdi.VirtualMachine.instanceCounts.instancecounts004;
import nsk.share.Consts;
import nsk.share.TestBug;
import nsk.share.jdi.*;
import java.io.*;
import java.util.*;
/*
* This debuggee class handle requests for start/stop thread which provokes GC
*/
public class instancecounts004a extends HeapwalkingDebuggee {
static public final String COMMAND_START_GC_PROVOCATEUR = "startGCProvokateur";
static public final String COMMAND_STOP_GC_PROVOCATEUR = "stopGCProvokateur";
static public final String COMMAND_CONSUME_MEMORY = "consumeMemory";
protected GCProvokateur provokateur;
class GCProvokateur extends Thread {
public volatile boolean stop;
Collection<byte[]> garbage;
public void run() {
while (!stop) {
try {
while (!stop) {
long memory = Runtime.getRuntime().freeMemory() / 100;
int arraySize;
if (memory > Integer.MAX_VALUE)
arraySize = Integer.MAX_VALUE;
else
arraySize = (int) memory;
garbage = new ArrayList<byte[]>();
for (int i = 0; i < 50; i++)
garbage.add(new byte[arraySize]);
try {
Thread.sleep(10);
} catch (InterruptedException e) {
}
}
} catch (OutOfMemoryError ignoreError) {
}
}
}
}
// create large list to increase time needed for VirtualMachine.instanceCount
ArrayList<Object> garbageList = new ArrayList<Object>();
protected String[] doInit(String args[]) {
args = super.doInit(args);
for (int i = 0; i < 250000; i++) {
TestClass1 t1 = new TestClass1();
TestClass2 t2 = new TestClass2();
garbageList.add(t1);
garbageList.add(t2);
}
return args;
}
protected void consumeMemory(double consumedPart) {
Collection<Object> garbage = new ArrayList<Object>();
log.display("consumeMemory: " + consumedPart);
if ((consumedPart > 1.0) || (consumedPart < 0)) {
throw new TestBug("Invalid value 'consumedPart'=" + consumedPart + " in consumeMemory, sholud be in [0..1]");
}
garbage = new ArrayList<Object>();
long freeSize = (long) (Runtime.getRuntime().totalMemory() * (1 - consumedPart));
int arraySize = (int) (freeSize / 100F);
if (arraySize < 1000)
arraySize = 1000;
while (Runtime.getRuntime().freeMemory() > freeSize) {
garbage.add(new byte[arraySize]);
}
}
protected void stopGCProvokateur() {
if (provokateur != null) {
provokateur.stop = true;
try {
provokateur.join();
} catch (InterruptedException e) {
log.complain("Main thread was unexpected interrupted when waiting for GCProvokateur termination");
System.exit(Consts.JCK_STATUS_BASE + Consts.TEST_FAILED);
}
}
}
protected void startGCProvokateur() {
stopGCProvokateur();
provokateur = new GCProvokateur();
provokateur.start();
}
public boolean parseCommand(String command) {
if (super.parseCommand(command))
return true;
try {
StreamTokenizer tokenizer = new StreamTokenizer(new StringReader(command));
tokenizer.whitespaceChars(':', ':');
if (command.equals(COMMAND_START_GC_PROVOCATEUR)) {
startGCProvokateur();
return true;
} else if (command.equals(COMMAND_STOP_GC_PROVOCATEUR)) {
stopGCProvokateur();
return true;
} else if (command.startsWith(COMMAND_CONSUME_MEMORY)) {
tokenizer.nextToken();
if (tokenizer.nextToken() != StreamTokenizer.TT_NUMBER)
throw new TestBug("Invalid command format");
consumeMemory(tokenizer.nval);
return true;
}
} catch (IOException e) {
throw new TestBug("Invalid command format: " + command);
}
return false;
}
public static void main(String args[]) {
new instancecounts004a().doTest(args);
}
}
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