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Ensure the modification count is checked correctly

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Fixes #202
This commit is contained in:
Dan Mulloy 2016-05-21 17:44:25 -04:00
parent 1ca7973b77
commit cc362a1b7f
3 changed files with 15 additions and 11 deletions
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2
modules/API/src/main/java/com/comphenix/protocol/injector/netty/NettyProtocolRegistry.java
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@ -40,7 +40,7 @@ public class NettyProtocolRegistry extends ProtocolRegistry {
@Override
protected synchronized void initialize() {
ProtocolLogger.debug("NettyProtocolRegistry#initialize()"); // Debug for issue #202
ProtocolLogger.debug("Initializing the Netty protocol registry"); // Debug for issue #202
Object[] protocols = enumProtocol.getEnumConstants();

4
modules/API/src/main/java/com/comphenix/protocol/injector/netty/ProtocolRegistry.java
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@ -19,7 +19,7 @@ import com.google.common.collect.Sets;
* Represents a way of accessing the new netty Protocol enum.
* @author Kristian
*/
// TODO: Handle modifications to the BiMap
public abstract class ProtocolRegistry {
/**
* Represents a register we are currently building.
@ -97,7 +97,7 @@ public abstract class ProtocolRegistry {
* This operation may block the calling thread.
*/
public synchronized void synchronize() {
// See if the register is outdated
// Check if the packet registry has changed
if (register.isOutdated()) {
initialize();
}

20
modules/API/src/main/java/com/comphenix/protocol/injector/packet/MapContainer.java
View File

@ -3,6 +3,7 @@ package com.comphenix.protocol.injector.packet;
import java.lang.reflect.Field;
import com.comphenix.protocol.reflect.FieldUtils;
import static com.google.common.base.Preconditions.checkNotNull;
/**
* Represents a class that can detect if a map has changed.
@ -10,17 +11,20 @@ import com.comphenix.protocol.reflect.FieldUtils;
*/
public class MapContainer {
// For detecting changes
private Field modCountField;
private final Field modCountField;
private int lastModCount;
// The object along with whether or not this is the initial run
private Object source;
private final Object source;
private boolean changed;
public MapContainer(Object source) {
this.source = source;
this.changed = true;
this.modCountField = FieldUtils.getField(source.getClass(), "modCount", true);
this.changed = false;
Field modCountField = FieldUtils.getField(source.getClass(), "modCount", true);
this.modCountField = checkNotNull(modCountField, "Could not obtain modCount field");
this.lastModCount = getModificationCount();
}
/**
@ -55,13 +59,13 @@ public class MapContainer {
/**
* Retrieve the current modification count.
* @return The current count, or something different than lastModCount if not accessible.
* @return The current count
*/
private int getModificationCount() {
try {
return modCountField != null ? modCountField.getInt(source) : lastModCount + 1;
} catch (Exception e) {
throw new RuntimeException("Unable to retrieve modCount.", e);
return modCountField.getInt(source);
} catch (ReflectiveOperationException ex) {
throw new RuntimeException("Unable to retrieve modCount.", ex);
}
}
}