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/*
* Copyright (c) 2006, 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.share;
import java.util.*;
/*
* Class create/delete instances with given reference type and given referrers number
*/
public class ObjectInstancesManager
{
public static String STRONG_REFERENCE = "STRONG";
public static String WEAK_REFERENCE = "WEAK";
public static String SOFT_REFERENCE = "SOFT";
public static String PHANTOM_REFERENCE = "PHANTOM";
public static String JNI_GLOBAL_REFERENCE = "JNI_GLOBAL";
public static String JNI_LOCAL_REFERENCE = "JNI_LOCAL";
public static String JNI_WEAK_REFERENCE = "JNI_WEAK";
// used to create references of all types
private static String USE_ALL_REFERENCE_TYPES = "ALL_REFERENCE_TYPES";
private Map<String, Collection<ReferringObjectSet>> instances = new TreeMap<String, Collection<ReferringObjectSet>>();
public static Set<String> primitiveArrayClassNames = new HashSet<String>();
static
{
primitiveArrayClassNames.add("boolean[]");
primitiveArrayClassNames.add("byte[]");
primitiveArrayClassNames.add("char[]");
primitiveArrayClassNames.add("int[]");
primitiveArrayClassNames.add("long[]");
primitiveArrayClassNames.add("float[]");
primitiveArrayClassNames.add("double[]");
}
public static Set<String> allReferenceTypes = new HashSet<String>();
static
{
allReferenceTypes.add(ObjectInstancesManager.STRONG_REFERENCE);
allReferenceTypes.add(ObjectInstancesManager.WEAK_REFERENCE);
allReferenceTypes.add(ObjectInstancesManager.SOFT_REFERENCE);
allReferenceTypes.add(ObjectInstancesManager.PHANTOM_REFERENCE);
allReferenceTypes.add(ObjectInstancesManager.JNI_GLOBAL_REFERENCE);
allReferenceTypes.add(ObjectInstancesManager.JNI_LOCAL_REFERENCE);
allReferenceTypes.add(ObjectInstancesManager.JNI_WEAK_REFERENCE);
}
public static boolean isWeak(String type) {
return !(type.equals(ObjectInstancesManager.JNI_GLOBAL_REFERENCE)
|| type.equals(ObjectInstancesManager.JNI_LOCAL_REFERENCE)
|| type.equals(ObjectInstancesManager.STRONG_REFERENCE));
}
public static Log log;
public ObjectInstancesManager(Log log)
{
ObjectInstancesManager.log = log;
}
// delete a given number of referrers
public void deleteReferrers(String className, int referrersCount, Set<String> referrerTypes)
{
Collection<ReferringObjectSet> objectInstances;
objectInstances = instances.get(className);
if(objectInstances == null)
{
log.display("Error command 'deleteObjectInstances' is requsted: instances of class " + className + " was not created");
System.exit(Consts.JCK_STATUS_BASE + Consts.TEST_FAILED);
return;
}
Iterator<ReferringObjectSet> iterator = objectInstances.iterator();
while(iterator.hasNext())
{
ReferringObjectSet debugeeObjectReference = iterator.next();
if (referrerTypes.isEmpty() || referrerTypes.contains(debugeeObjectReference.getReferenceType())) {
debugeeObjectReference.delete(referrersCount);
if(debugeeObjectReference.getReferrerCount() == 0)
iterator.remove();
}
}
}
// delete all object referrers, it is equal to make object unreacheable
public void deleteAllReferrers(int count, String className)
{
Collection<ReferringObjectSet> objectInstances;
objectInstances = instances.get(className);
if(objectInstances == null)
{
throw new TestBug("Command 'deleteObjectInstances' is requsted: instances of class " + className + " was not created");
}
Iterator<ReferringObjectSet> iterator = objectInstances.iterator();
if(count == 0)
count = objectInstances.size();
for(int i = 0; i < count; i++)
{
ReferringObjectSet debugeeObjectReference = iterator.next();
debugeeObjectReference.deleteAll();
iterator.remove();
}
}
// create object instance with referrers of all possible types
public void createAllTypeReferences(String className, int count)
{
createReferences(count, className, 1, allReferenceTypes);
}
// create a given number of object instances with given number of referrers
public void createReferences(int count, String className, int referrerCount, Set<String> referrerTypes)
{
Collection<ReferringObjectSet> objectInstances;
Class klass = null;
if(!primitiveArrayClassNames.contains(className))
{
try
{
klass = Class.forName(className);
}
catch(ClassNotFoundException e)
{
log.display("Can't find class: " + className);
System.exit(Consts.JCK_STATUS_BASE + Consts.TEST_FAILED);
return;
}
}
objectInstances = instances.get(className);
if(objectInstances == null)
{
objectInstances = new ArrayList<ReferringObjectSet>();
instances.put(className, objectInstances);
}
for(int i = 0; i < count; i++)
{
try
{
Object instance;
if(!primitiveArrayClassNames.contains(className))
{
instance = klass.newInstance();
}
else
{
instance = createPrimitiveTypeArray(className);
}
for(String type : referrerTypes) {
objectInstances.add(new ReferringObjectSet(instance, referrerCount, type));
}
}
catch(Exception e)
{
log.display("Unexpected exception: " + e);
System.exit(Consts.JCK_STATUS_BASE + Consts.TEST_FAILED);
}
}
}
public Object createPrimitiveTypeArray(String typeName)
{
int arraySize = 1;
if(typeName.equals("boolean[]"))
return new boolean[arraySize];
else
if(typeName.equals("byte[]"))
return new byte[arraySize];
else
if(typeName.equals("char[]"))
return new char[arraySize];
else
if(typeName.equals("int[]"))
return new int[arraySize];
else
if(typeName.equals("long[]"))
return new long[arraySize];
else
if(typeName.equals("float[]"))
return new float[arraySize];
else
if(typeName.equals("double[]"))
return new double[arraySize];
else
{
throw new TestBug("Invalid primitive type array type name: " + typeName);
}
}
}
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