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/*
* Copyright (c) 2003, 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.jvmti.ObjectFree;
import java.io.*;
import nsk.share.*;
import nsk.share.jvmti.*;
/**
* This test exercises the JVMTI event <code>ObjectFree</code>.
* <br>It verifies that the events are only sent for tagged objects.
* The test also checks that the JVMTI raw monitor, memory management,
* and environment local storage functions can be used during processing
* this event.<p>
* The test works as follows. An array of instances of the special
* class <code>objfree002t</code> is used for testing as follows.
* The objects with odd array indexes are skipped from tagging, all
* other ones are tagged. Then, after nulling the objects and GC() call,
* all received <code>ObjectFree</code> events, if so, should have only
* the even tag numbers.<br>
* If there are no ObjectFree events, the test passes with appropriate
* message.
*/
public class objfree002 {
/**
* number of objects to be created
*/
private final static int OBJ_NUM = 10;
/**
* Object to be tagged
*/
objfree002t[] objToTag = new objfree002t[OBJ_NUM];
private Log log;
static {
try {
System.loadLibrary("objfree002");
} catch (UnsatisfiedLinkError ule) {
System.err.println("Could not load \"objfree002\" library");
System.err.println("java.library.path:"
+ System.getProperty("java.library.path"));
throw ule;
}
}
native int check();
native void setTag(objfree002t obj, int num);
public static void main(String[] argv) {
argv = nsk.share.jvmti.JVMTITest.commonInit(argv);
// produce JCK-like exit status
System.exit(run(argv, System.out) + Consts.JCK_STATUS_BASE);
}
public static int run(String argv[], PrintStream out) {
return new objfree002().runThis(argv, out);
}
private int runThis(String argv[], PrintStream out) {
ArgumentHandler argHandler = new ArgumentHandler(argv);
log = new Log(out, argHandler);
String args[] = argHandler.getArguments();
if (args.length <= 0)
throw new Failure("TEST BUG: number of GC() calls is not specified");
try {
int callNum = Integer.parseInt(args[0]);
log.display("Creating " + OBJ_NUM
+ " instance(s) of the tested class ...\n");
for (int i=0; i<OBJ_NUM; i++) {
objToTag[i] = new objfree002t();
setTag(objToTag[i], i); // tagging some of the objects
}
log.display("\nCreating " + OBJ_NUM
+ " instance(s) done\n");
log.display("Freeing up the instance(s) ...\n");
for (int i=0; i<OBJ_NUM; i++)
objToTag[i] = null;
log.display("Calling GC() " + callNum
+ " times ...\n");
for (int i=0; i<callNum; i++)
System.gc();
log.display("Calling GC() done\n");
return check();
} catch(Exception e) {
e.printStackTrace();
throw new Failure("TEST FAILURE: caught unexpected "
+ e);
}
}
}
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