170 lines
6.5 KiB
Java
170 lines
6.5 KiB
Java
|
package com.google.common.base;
|
||
|
|
||
|
import java.io.Closeable;
|
||
|
import java.io.FileNotFoundException;
|
||
|
import java.io.IOException;
|
||
|
import java.lang.ref.PhantomReference;
|
||
|
import java.lang.ref.Reference;
|
||
|
import java.lang.ref.ReferenceQueue;
|
||
|
import java.lang.reflect.Method;
|
||
|
import java.net.URL;
|
||
|
import java.net.URLClassLoader;
|
||
|
import java.util.logging.Level;
|
||
|
import java.util.logging.Logger;
|
||
|
|
||
|
/* loaded from: classes2.dex */
|
||
|
public class FinalizableReferenceQueue implements Closeable {
|
||
|
private static final String FINALIZER_CLASS_NAME = "com.google.common.base.internal.Finalizer";
|
||
|
private static final Logger logger = Logger.getLogger(FinalizableReferenceQueue.class.getName());
|
||
|
private static final Method startFinalizer = getStartFinalizer(loadFinalizer(new SystemLoader(), new DecoupledLoader(), new DirectLoader()));
|
||
|
final PhantomReference<Object> frqRef;
|
||
|
final ReferenceQueue<Object> queue;
|
||
|
final boolean threadStarted;
|
||
|
|
||
|
/* JADX INFO: Access modifiers changed from: package-private */
|
||
|
/* loaded from: classes2.dex */
|
||
|
public interface FinalizerLoader {
|
||
|
Class<?> loadFinalizer();
|
||
|
}
|
||
|
|
||
|
public FinalizableReferenceQueue() {
|
||
|
ReferenceQueue<Object> referenceQueue = new ReferenceQueue<>();
|
||
|
this.queue = referenceQueue;
|
||
|
PhantomReference<Object> phantomReference = new PhantomReference<>(this, referenceQueue);
|
||
|
this.frqRef = phantomReference;
|
||
|
boolean z = false;
|
||
|
try {
|
||
|
startFinalizer.invoke(null, FinalizableReference.class, referenceQueue, phantomReference);
|
||
|
z = true;
|
||
|
} catch (IllegalAccessException e) {
|
||
|
throw new AssertionError(e);
|
||
|
} catch (Throwable th) {
|
||
|
logger.log(Level.INFO, "Failed to start reference finalizer thread. Reference cleanup will only occur when new references are created.", th);
|
||
|
}
|
||
|
this.threadStarted = z;
|
||
|
}
|
||
|
|
||
|
@Override // java.io.Closeable, java.lang.AutoCloseable
|
||
|
public void close() {
|
||
|
this.frqRef.enqueue();
|
||
|
cleanUp();
|
||
|
}
|
||
|
|
||
|
/* JADX INFO: Access modifiers changed from: package-private */
|
||
|
/* JADX WARN: Multi-variable type inference failed */
|
||
|
public void cleanUp() {
|
||
|
if (this.threadStarted) {
|
||
|
return;
|
||
|
}
|
||
|
while (true) {
|
||
|
Reference<? extends Object> poll = this.queue.poll();
|
||
|
if (poll == 0) {
|
||
|
return;
|
||
|
}
|
||
|
poll.clear();
|
||
|
try {
|
||
|
((FinalizableReference) poll).finalizeReferent();
|
||
|
} catch (Throwable th) {
|
||
|
logger.log(Level.SEVERE, "Error cleaning up after reference.", th);
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
private static Class<?> loadFinalizer(FinalizerLoader... finalizerLoaderArr) {
|
||
|
for (FinalizerLoader finalizerLoader : finalizerLoaderArr) {
|
||
|
Class<?> loadFinalizer = finalizerLoader.loadFinalizer();
|
||
|
if (loadFinalizer != null) {
|
||
|
return loadFinalizer;
|
||
|
}
|
||
|
}
|
||
|
throw new AssertionError();
|
||
|
}
|
||
|
|
||
|
/* loaded from: classes2.dex */
|
||
|
static class SystemLoader implements FinalizerLoader {
|
||
|
static boolean disabled;
|
||
|
|
||
|
SystemLoader() {
|
||
|
}
|
||
|
|
||
|
@Override // com.google.common.base.FinalizableReferenceQueue.FinalizerLoader
|
||
|
public Class<?> loadFinalizer() {
|
||
|
if (disabled) {
|
||
|
return null;
|
||
|
}
|
||
|
try {
|
||
|
ClassLoader systemClassLoader = ClassLoader.getSystemClassLoader();
|
||
|
if (systemClassLoader != null) {
|
||
|
try {
|
||
|
return systemClassLoader.loadClass(FinalizableReferenceQueue.FINALIZER_CLASS_NAME);
|
||
|
} catch (ClassNotFoundException unused) {
|
||
|
}
|
||
|
}
|
||
|
return null;
|
||
|
} catch (SecurityException unused2) {
|
||
|
FinalizableReferenceQueue.logger.info("Not allowed to access system class loader.");
|
||
|
return null;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/* loaded from: classes2.dex */
|
||
|
static class DecoupledLoader implements FinalizerLoader {
|
||
|
private static final String LOADING_ERROR = "Could not load Finalizer in its own class loader. Loading Finalizer in the current class loader instead. As a result, you will not be able to garbage collect this class loader. To support reclaiming this class loader, either resolve the underlying issue, or move Guava to your system class path.";
|
||
|
|
||
|
DecoupledLoader() {
|
||
|
}
|
||
|
|
||
|
@Override // com.google.common.base.FinalizableReferenceQueue.FinalizerLoader
|
||
|
public Class<?> loadFinalizer() {
|
||
|
try {
|
||
|
return newLoader(getBaseUrl()).loadClass(FinalizableReferenceQueue.FINALIZER_CLASS_NAME);
|
||
|
} catch (Exception e) {
|
||
|
FinalizableReferenceQueue.logger.log(Level.WARNING, LOADING_ERROR, (Throwable) e);
|
||
|
return null;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
URL getBaseUrl() throws IOException {
|
||
|
String concat = String.valueOf(FinalizableReferenceQueue.FINALIZER_CLASS_NAME.replace('.', '/')).concat(".class");
|
||
|
URL resource = getClass().getClassLoader().getResource(concat);
|
||
|
if (resource == null) {
|
||
|
throw new FileNotFoundException(concat);
|
||
|
}
|
||
|
String obj = resource.toString();
|
||
|
if (!obj.endsWith(concat)) {
|
||
|
String valueOf = String.valueOf(obj);
|
||
|
throw new IOException(valueOf.length() != 0 ? "Unsupported path style: ".concat(valueOf) : new String("Unsupported path style: "));
|
||
|
}
|
||
|
return new URL(resource, obj.substring(0, obj.length() - concat.length()));
|
||
|
}
|
||
|
|
||
|
URLClassLoader newLoader(URL url) {
|
||
|
return new URLClassLoader(new URL[]{url}, null);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/* loaded from: classes2.dex */
|
||
|
static class DirectLoader implements FinalizerLoader {
|
||
|
DirectLoader() {
|
||
|
}
|
||
|
|
||
|
@Override // com.google.common.base.FinalizableReferenceQueue.FinalizerLoader
|
||
|
public Class<?> loadFinalizer() {
|
||
|
try {
|
||
|
return Class.forName(FinalizableReferenceQueue.FINALIZER_CLASS_NAME);
|
||
|
} catch (ClassNotFoundException e) {
|
||
|
throw new AssertionError(e);
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static Method getStartFinalizer(Class<?> cls) {
|
||
|
try {
|
||
|
return cls.getMethod("startFinalizer", Class.class, ReferenceQueue.class, PhantomReference.class);
|
||
|
} catch (NoSuchMethodException e) {
|
||
|
throw new AssertionError(e);
|
||
|
}
|
||
|
}
|
||
|
}
|