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io.qt.internal.ReferenceUtility Maven / Gradle / Ivy
QtJambi base module containing QtCore, QtGui and QtWidgets.
/****************************************************************************
**
** Copyright (C) 2009-2024 Dr. Peter Droste, Omix Visualization GmbH & Co. KG. All rights reserved.
**
** This file is part of Qt Jambi.
**
** ** $BEGIN_LICENSE$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
** $END_LICENSE$
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/
package io.qt.internal;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.IdentityHashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import io.qt.NativeAccess;
import io.qt.QtObjectInterface;
import io.qt.core.QMetaObject;
import io.qt.internal.NativeUtility.NativeLink;
/**
* @hidden
*/
abstract class ReferenceUtility {
private ReferenceUtility() {
throw new RuntimeException();
}
static {
QtJambi_LibraryUtilities.initialize();
}
private static native boolean needsReferenceCounting(long object);
private static class RCList extends ArrayList {
@NativeAccess
public RCList() {
super();
}
private static final long serialVersionUID = -4010060446825990721L;
private final QMetaObject.Slot0 checkSlot = this::check;
private synchronized void check() {
List disposedElements = null;
for (Object o : this) {
if (o instanceof QtObjectInterface && ((QtObjectInterface) o).isDisposed()) {
if (disposedElements == null) {
disposedElements = Collections.singletonList(o);
} else {
if (disposedElements.size() == 1) {
disposedElements = new ArrayList<>(disposedElements);
}
disposedElements.add(o);
}
}
}
if (disposedElements != null) {
for (Object o : disposedElements) {
super.remove(o);
}
}
}
@Override
@NativeAccess
public boolean add(Object e) {
if(e instanceof QtObjectInterface) {
if(!needsReferenceCounting(NativeUtility.nativeId((QtObjectInterface)e)))
return false;
boolean result;
synchronized (this) {
result = super.add(e);
}
if (result) {
QMetaObject.DisposedSignal disposed = NativeUtility.getSignalOnDispose((QtObjectInterface) e, true);
if (disposed != null)
disposed.connect(checkSlot);
}
return result;
}else {
synchronized (this) {
return super.add(e);
}
}
}
@Override
@NativeAccess
public boolean remove(Object o) {
boolean result;
synchronized (this) {
result = super.remove(o);
}
if (result && o instanceof QtObjectInterface) {
QMetaObject.DisposedSignal disposed = NativeUtility.getSignalOnDispose((QtObjectInterface) o, true);
if (disposed != null)
disposed.disconnect(checkSlot);
}
return result;
}
@Override
@NativeAccess
public void clear() {
List disposedElements;
synchronized(this) {
disposedElements = new ArrayList<>(this);
super.clear();
}
for (Object o : disposedElements) {
if (o instanceof QtObjectInterface) {
QMetaObject.DisposedSignal disposed = NativeUtility.getSignalOnDispose((QtObjectInterface) o, true);
if (disposed != null)
disposed.disconnect(checkSlot);
}
}
}
@Override
@NativeAccess
public boolean addAll(Collection c) {
boolean result = false;
for (Object o : c) {
result |= add(o);
}
return result;
}
}
@NativeAccess
private static class RCSet extends HashSet {
@NativeAccess
public RCSet() {
super();
}
private static final long serialVersionUID = -4010060446825990721L;
private final QMetaObject.Slot0 checkSlot = this::check;
@SuppressWarnings("unused")
private synchronized void check() {
List disposedElements = null;
for (Object o : this) {
if (o instanceof QtObjectInterface && ((QtObjectInterface) o).isDisposed()) {
if (disposedElements == null) {
disposedElements = Collections.singletonList(o);
} else {
if (disposedElements.size() == 1) {
disposedElements = new ArrayList<>(disposedElements);
}
disposedElements.add(o);
}
}
}
if (disposedElements != null) {
for (Object o : disposedElements) {
super.remove(o);
}
}
}
@Override
@NativeAccess
public boolean add(Object e) {
if(e instanceof QtObjectInterface) {
if(!needsReferenceCounting(NativeUtility.nativeId((QtObjectInterface)e)))
return false;
boolean result;
synchronized (this) {
result = super.add(e);
}
if (result) {
QMetaObject.DisposedSignal disposed = NativeUtility.getSignalOnDispose((QtObjectInterface) e, true);
if (disposed != null)
disposed.connect(checkSlot);
}
return result;
}else {
synchronized (this) {
return super.add(e);
}
}
}
@Override
@NativeAccess
public boolean remove(Object o) {
boolean result;
synchronized (this) {
result = super.remove(o);
}
if (result && o instanceof QtObjectInterface) {
QMetaObject.DisposedSignal disposed = NativeUtility.getSignalOnDispose((QtObjectInterface) o, true);
if (disposed != null)
disposed.disconnect(checkSlot);
}
return result;
}
@Override
@NativeAccess
public void clear() {
Set disposedElements;
synchronized(this) {
disposedElements = new HashSet<>(this);
super.clear();
}
for (Object o : disposedElements) {
if (o instanceof QtObjectInterface) {
QMetaObject.DisposedSignal disposed = NativeUtility.getSignalOnDispose((QtObjectInterface) o, true);
if (disposed != null)
disposed.disconnect(checkSlot);
}
}
}
@Override
@NativeAccess
public boolean addAll(Collection c) {
boolean result = false;
for (Object o : c) {
result |= add(o);
}
return result;
}
}
private static class RCMap extends IdentityHashMap {
private static final long serialVersionUID = 3076251074218500284L;
private final QMetaObject.Slot0 checkSlot = this::check;
@NativeAccess
public RCMap() {
super();
}
@SuppressWarnings("unused")
private synchronized void check() {
List nulledKeys = null;
List disposedKeys = null;
for (Entry entry : this.entrySet()) {
if (entry.getValue() instanceof QtObjectInterface
&& ((QtObjectInterface) entry.getValue()).isDisposed()) {
if (entry.getKey() instanceof QtObjectInterface
&& !((QtObjectInterface) entry.getKey()).isDisposed()) {
if (nulledKeys == null) {
nulledKeys = Collections.singletonList(entry.getKey());
} else {
if (nulledKeys.size() == 1) {
nulledKeys = new ArrayList<>(nulledKeys);
}
nulledKeys.add(entry.getKey());
}
} else {
if (disposedKeys == null) {
disposedKeys = Collections.singletonList(entry.getKey());
} else {
if (disposedKeys.size() == 1) {
disposedKeys = new ArrayList<>(disposedKeys);
}
disposedKeys.add(entry.getKey());
}
}
}
}
if (disposedKeys != null) {
for (Object key : disposedKeys) {
super.remove(key);
}
}
if (nulledKeys != null) {
for (Object key : nulledKeys) {
super.put(key, null);
}
}
}
@Override
public Object put(Object key, Object value) {
if (key instanceof QtObjectInterface || value instanceof QtObjectInterface) {
if (key instanceof QtObjectInterface && value instanceof QtObjectInterface) {
if(!needsReferenceCounting(NativeUtility.nativeId((QtObjectInterface)key)) && !needsReferenceCounting(NativeUtility.nativeId((QtObjectInterface)value)))
return false;
}else if (key instanceof QtObjectInterface) {
if(!needsReferenceCounting(NativeUtility.nativeId((QtObjectInterface)key)))
return false;
}else {
if(!needsReferenceCounting(NativeUtility.nativeId((QtObjectInterface)value)))
return false;
}
}
Object result;
synchronized (this) {
result = super.put(key, value);
}
if (key instanceof QtObjectInterface) {
QMetaObject.DisposedSignal disposed = NativeUtility.getSignalOnDispose((QtObjectInterface) key, true);
if (disposed != null)
disposed.connect(checkSlot);
}
if (value instanceof QtObjectInterface) {
QMetaObject.DisposedSignal disposed = NativeUtility.getSignalOnDispose((QtObjectInterface) value, true);
if (disposed != null)
disposed.connect(checkSlot);
}
if (result instanceof QtObjectInterface) {
QMetaObject.DisposedSignal disposed = NativeUtility.getSignalOnDispose((QtObjectInterface) result, true);
if (disposed != null)
disposed.disconnect(checkSlot);
}
return result;
}
@Override
public Object remove(Object key) {
Object result;
synchronized (this) {
result = super.remove(key);
}
if (key instanceof QtObjectInterface) {
QMetaObject.DisposedSignal disposed = NativeUtility.getSignalOnDispose((QtObjectInterface) key, true);
if (disposed != null)
disposed.disconnect(checkSlot);
}
if (result instanceof QtObjectInterface) {
QMetaObject.DisposedSignal disposed = NativeUtility.getSignalOnDispose((QtObjectInterface) result, true);
if (disposed != null)
disposed.disconnect(checkSlot);
}
return result;
}
@Override
public void clear() {
IdentityHashMap _this;
synchronized (this) {
_this = new IdentityHashMap<>(this);
super.clear();
}
for (Entry entry : _this.entrySet()) {
if (entry.getKey() instanceof QtObjectInterface) {
QMetaObject.DisposedSignal disposed = NativeUtility.getSignalOnDispose((QtObjectInterface) entry.getKey(), true);
if (disposed != null)
disposed.disconnect(checkSlot);
}
if (entry.getValue() instanceof QtObjectInterface) {
QMetaObject.DisposedSignal disposed = NativeUtility.getSignalOnDispose((QtObjectInterface) entry.getValue(), true);
if (disposed != null)
disposed.disconnect(checkSlot);
}
}
}
@Override
public boolean remove(Object key, Object value) {
boolean result;
synchronized (this) {
result = super.remove(key, value);
}
if (result) {
if (key instanceof QtObjectInterface) {
QMetaObject.DisposedSignal disposed = NativeUtility.getSignalOnDispose((QtObjectInterface) key, true);
if (disposed != null)
disposed.disconnect(checkSlot);
}
if (value instanceof QtObjectInterface) {
QMetaObject.DisposedSignal disposed = NativeUtility.getSignalOnDispose((QtObjectInterface) value, true);
if (disposed != null)
disposed.disconnect(checkSlot);
}
}
return result;
}
}
static void removeFromMapReferenceCount(QtObjectInterface owner, Class declaringClass, String fieldName, boolean isStatic, Object value) {
Object collection = null;
boolean got = false;
if (declaringClass!=null && declaringClass.isInterface() && !isStatic) {
NativeLink link = NativeUtility.findInterfaceLink(owner, false);
if (link instanceof NativeUtility.ReferenceCountingNativeLink) {
collection = ((NativeUtility.ReferenceCountingNativeLink) link).getReferenceCountCollection(declaringClass, fieldName, null);
got = true;
}
}
if (!got) {
Field field = null;
if(declaringClass!=null) {
try {
field = declaringClass.getDeclaredField(fieldName);
} catch (NoSuchFieldException | SecurityException e2) {
}
}
if (field == null && owner != null) {
Class objectClass = AccessUtility.instance.getClass(owner);
do {
try {
field = objectClass.getDeclaredField(fieldName);
} catch (NoSuchFieldException | SecurityException e2) {
}
objectClass = objectClass.getSuperclass();
} while (objectClass != null && field == null);
}
if (field != null) {
collection = ReflectionUtility.readField(owner, field);
}
}
if (collection instanceof Map) {
((Map) collection).remove(value);
}
}
static void removeFromCollectionReferenceCount(QtObjectInterface owner, Class declaringClass, String fieldName, boolean isStatic, Object value) {
Object collection = null;
boolean got = false;
if (declaringClass!=null && declaringClass.isInterface() && !isStatic) {
NativeLink link = NativeUtility.findInterfaceLink(owner, false);
if (link instanceof NativeUtility.ReferenceCountingNativeLink) {
collection = ((NativeUtility.ReferenceCountingNativeLink) link).getReferenceCountCollection(declaringClass, fieldName, null);
got = true;
}
}
if (!got) {
Field field = null;
if(declaringClass!=null) {
try {
field = declaringClass.getDeclaredField(fieldName);
} catch (NoSuchFieldException | SecurityException e2) {
}
}
if (field == null && owner != null) {
Class objectClass = AccessUtility.instance.getClass(owner);
do {
try {
field = objectClass.getDeclaredField(fieldName);
} catch (NoSuchFieldException | SecurityException e2) {
}
objectClass = objectClass.getSuperclass();
} while (objectClass != null && field == null);
}
if (field != null) {
collection = ReflectionUtility.readField(owner, field);
}
}
if (collection instanceof Collection) {
((Collection) collection).remove(value);
}
}
@SuppressWarnings("unchecked")
static void addAllReferenceCount(QtObjectInterface owner, Class declaringClass, String fieldName, boolean isThreadSafe, boolean isStatic, Collection values) {
Object collection = null;
boolean got = false;
if (declaringClass!=null && declaringClass.isInterface() && !isStatic) {
NativeLink link = NativeUtility.findInterfaceLink(owner, false);
if (link instanceof NativeUtility.ReferenceCountingNativeLink) {
collection = ((NativeUtility.ReferenceCountingNativeLink) link).getReferenceCountCollection(declaringClass, fieldName, RCList::new);
got = true;
}
}
if (!got) {
Field field = null;
if (declaringClass!=null){
try {
field = declaringClass.getDeclaredField(fieldName);
} catch (NoSuchFieldException | SecurityException e2) {
}
}
if (field == null && owner != null) {
Class objectClass = AccessUtility.instance.getClass(owner);
do {
try {
field = objectClass.getDeclaredField(fieldName);
} catch (NoSuchFieldException | SecurityException e2) {
}
objectClass = objectClass.getSuperclass();
} while (objectClass != null && field == null);
}
if (field != null) {
collection = ReflectionUtility.readField(owner, field);
if (collection == null) {
if (isThreadSafe) {
collection = java.util.Collections.synchronizedList(new java.util.ArrayList<>());
} else {
collection = new java.util.ArrayList<>();
}
ReflectionUtility.writeField(owner, field, collection);
}
}
}
if (collection instanceof Collection) {
((Collection) collection).addAll(values);
}
}
@SuppressWarnings("unchecked")
static void putReferenceCount(QtObjectInterface owner, Class declaringClass, String fieldName, boolean isThreadSafe, boolean isStatic, Object key, Object value) {
Object map = null;
boolean got = false;
if (declaringClass!=null && declaringClass.isInterface() && !isStatic) {
NativeLink link = NativeUtility.findInterfaceLink(owner, false);
if (link instanceof NativeUtility.ReferenceCountingNativeLink) {
map = ((NativeUtility.ReferenceCountingNativeLink) link).getReferenceCountCollection(declaringClass, fieldName, () -> {
if (isThreadSafe) {
return java.util.Collections.synchronizedMap(new RCMap());
} else {
return new RCMap();
}
});
got = true;
}
}
if (!got) {
Field field = null;
if (declaringClass!=null){
try {
field = declaringClass.getDeclaredField(fieldName);
} catch (NoSuchFieldException | SecurityException e2) {
}
}
if (field == null && owner != null) {
Class objectClass = AccessUtility.instance.getClass(owner);
do {
try {
field = objectClass.getDeclaredField(fieldName);
} catch (NoSuchFieldException | SecurityException e2) {
}
objectClass = objectClass.getSuperclass();
} while (objectClass != null && field == null);
}
if (field != null) {
map = ReflectionUtility.readField(owner, field);
if (map == null) {
if (isThreadSafe) {
map = java.util.Collections.synchronizedMap(new java.util.HashMap<>());
} else {
map = new java.util.HashMap<>();
}
ReflectionUtility.writeField(owner, field, map);
}
}
}
if (map instanceof Map) {
((Map) map).put(key, value);
}
}
static void clearReferenceCount(QtObjectInterface owner, Class declaringClass, String fieldName, boolean isStatic) {
Object collection = null;
boolean got = false;
if (declaringClass!=null && declaringClass.isInterface() && !isStatic) {
NativeLink link = NativeUtility.findInterfaceLink(owner, false);
if (link instanceof NativeUtility.ReferenceCountingNativeLink) {
collection = ((NativeUtility.ReferenceCountingNativeLink) link).getReferenceCountCollection(declaringClass, fieldName, null);
got = true;
}
}
if (!got) {
Field field = null;
if(declaringClass!=null) {
try {
field = declaringClass.getDeclaredField(fieldName);
} catch (NoSuchFieldException | SecurityException e2) {
}
}
if (field == null && owner != null) {
Class objectClass = AccessUtility.instance.getClass(owner);
do {
try {
field = objectClass.getDeclaredField(fieldName);
} catch (NoSuchFieldException | SecurityException e2) {
}
objectClass = objectClass.getSuperclass();
} while (objectClass != null && field == null);
}
if (field != null) {
collection = ReflectionUtility.readField(owner, field);
}
}
if (collection instanceof Map) {
((Map) collection).clear();
} else if (collection instanceof Collection) {
((Collection) collection).clear();
}
}
@SuppressWarnings("unchecked")
static void addReferenceCount(QtObjectInterface owner, Class declaringClass, String fieldName, boolean isThreadSafe, boolean isStatic, Object value) {
Object collection = null;
boolean got = false;
if (declaringClass!=null && declaringClass.isInterface() && !isStatic) {
NativeLink link = NativeUtility.findInterfaceLink(owner, false);
if (link instanceof NativeUtility.ReferenceCountingNativeLink) {
collection = ((NativeUtility.ReferenceCountingNativeLink) link).getReferenceCountCollection(declaringClass, fieldName, RCList::new);
got = true;
}
}
if (!got) {
Field field = null;
if(declaringClass!=null) {
try {
field = declaringClass.getDeclaredField(fieldName);
} catch (NoSuchFieldException | SecurityException e2) {
}
}
if (field == null && owner != null) {
Class objectClass = AccessUtility.instance.getClass(owner);
do {
try {
field = objectClass.getDeclaredField(fieldName);
} catch (NoSuchFieldException | SecurityException e2) {
}
objectClass = objectClass.getSuperclass();
} while (objectClass != null && field == null);
}
if (field != null) {
collection = ReflectionUtility.readField(owner, field);
if (collection == null) {
if (isThreadSafe) {
collection = java.util.Collections.synchronizedList(new java.util.ArrayList<>());
} else {
collection = new java.util.ArrayList<>();
}
ReflectionUtility.writeField(owner, field, collection);
}
}
}
if (collection instanceof Collection) {
((Collection) collection).add(value);
}
}
static void copyReferenceCount(QtObjectInterface owner, Class declaringClass, String fieldName, QtObjectInterface copy) {
Field field = null;
Object newValue = null;
if(declaringClass!=null) {
if (declaringClass.isInterface()) {
NativeLink link = NativeUtility.findInterfaceLink(copy, true);
if (link instanceof NativeUtility.ReferenceCountingNativeLink) {
newValue = ((NativeUtility.ReferenceCountingNativeLink) link).getReferenceCount(declaringClass, fieldName);
link = NativeUtility.findInterfaceLink(owner, true);
if (link instanceof NativeUtility.ReferenceCountingNativeLink) {
((NativeUtility.ReferenceCountingNativeLink) link).setReferenceCount(declaringClass, fieldName, newValue);
return;
}
}
}
try {
field = declaringClass.getDeclaredField(fieldName);
} catch (NoSuchFieldException | SecurityException e2) {
}
}
if (field == null && copy != null) {
Class objectClass = AccessUtility.instance.getClass(copy);
do {
try {
field = objectClass.getDeclaredField(fieldName);
} catch (NoSuchFieldException | SecurityException e2) {
}
objectClass = objectClass.getSuperclass();
} while (objectClass != null && field == null);
}
if (field != null) {
if(newValue==null) {
newValue = ReflectionUtility.readField(copy, field);
}
if (declaringClass!=null && declaringClass.isInterface()) {
NativeLink link = NativeUtility.findInterfaceLink(owner, true);
if (link instanceof NativeUtility.ReferenceCountingNativeLink) {
((NativeUtility.ReferenceCountingNativeLink) link).setReferenceCount(declaringClass, fieldName, newValue);
return;
}
}
ReflectionUtility.writeField(owner, field, newValue);
}
}
static void setReferenceCount(QtObjectInterface owner, Class declaringClass, String fieldName, boolean threadSafe, boolean isStatic, Object newValue) {
if (threadSafe) {
synchronized (isStatic ? declaringClass : owner) {
setReferenceCount(owner, declaringClass, fieldName, isStatic, newValue);
}
} else {
setReferenceCount(owner, declaringClass, fieldName, isStatic, newValue);
}
}
private static void setReferenceCount(QtObjectInterface owner, Class declaringClass,
String fieldName, boolean isStatic, Object newValue) {
Field field = null;
if(declaringClass!=null) {
if (declaringClass.isInterface() && !isStatic) {
NativeLink link = NativeUtility.findInterfaceLink(owner, true);
if (link instanceof NativeUtility.ReferenceCountingNativeLink) {
((NativeUtility.ReferenceCountingNativeLink) link).setReferenceCount(declaringClass, fieldName, newValue);
return;
}
}
try {
field = declaringClass.getDeclaredField(fieldName);
} catch (NoSuchFieldException | SecurityException e2) {
}
}
if (field == null && owner != null) {
Class objectClass = AccessUtility.instance.getClass(owner);
do {
try {
field = objectClass.getDeclaredField(fieldName);
} catch (NoSuchFieldException | SecurityException e2) {
}
objectClass = objectClass.getSuperclass();
} while (objectClass != null && field == null);
}
if (field != null) {
ReflectionUtility.writeField(owner, field, newValue);
}
}
static Map newRCMap() {
return new RCMap();
}
static List newRCList() {
return new RCList();
}
}
