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Fix a race condition we created while fixing another race condition.

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They're everywhere.
This commit is contained in:
Kristian S. Stangeland 2013-12-14 16:32:12 +01:00
parent b52ea72903
commit a6f4aaa09a
1 changed files with 24 additions and 15 deletions
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39
ProtocolLib/src/main/java/com/comphenix/protocol/injector/netty/NettyProtocolInjector.java
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@ -21,6 +21,8 @@ import net.minecraft.util.io.netty.channel.ChannelInitializer;
import com.comphenix.protocol.PacketType;
import com.comphenix.protocol.concurrency.PacketTypeSet;
import com.comphenix.protocol.error.ErrorReporter;
import com.comphenix.protocol.error.Report;
import com.comphenix.protocol.error.ReportType;
import com.comphenix.protocol.events.ConnectionSide;
import com.comphenix.protocol.events.ListenerOptions;
import com.comphenix.protocol.events.NetworkMarker;
@ -39,13 +41,17 @@ import com.comphenix.protocol.utility.MinecraftReflection;
import com.google.common.collect.Lists;
public class NettyProtocolInjector implements ChannelListener {
public static final ReportType REPORT_CANNOT_INJECT_INCOMING_CHANNEL = new ReportType("Unable to to inject incoming channel %s.");
private volatile boolean injected;
private volatile boolean closed;
// The temporary player factory
private TemporaryPlayerFactory playerFactory = new TemporaryPlayerFactory();
private List<VolatileField> bootstrapFields = Lists.newArrayList();
private List<Object> networkManagers;
// List of network managers
private volatile List<Object> networkManagers;
// Different sending filters
private PacketTypeSet sendingFilters = new PacketTypeSet();
@ -85,16 +91,21 @@ public class NettyProtocolInjector implements ChannelListener {
final ChannelInboundHandler initProtocol = new ChannelInitializer<Channel>() {
@Override
protected void initChannel(Channel channel) throws Exception {
// Check and see if the injector has closed
synchronized (this) {
if (closed)
return;
}
// This can take a while, so we need to stop the main thread from interfering
synchronized (networkManagers) {
ChannelInjector.fromChannel(channel, NettyProtocolInjector.this, playerFactory).inject();
}
try {
// Check and see if the injector has closed
synchronized (this) {
if (closed)
return;
}
// This can take a while, so we need to stop the main thread from interfering
synchronized (networkManagers) {
ChannelInjector.fromChannel(channel, NettyProtocolInjector.this, playerFactory).inject();
}
} catch (Exception e) {
reporter.reportDetailed(this, Report.newBuilder(REPORT_CANNOT_INJECT_INCOMING_CHANNEL).
messageParam(channel).error(e));
}
}
};
@ -111,7 +122,7 @@ public class NettyProtocolInjector implements ChannelListener {
};
// Get the current NetworkMananger list
Object networkManagerList = FuzzyReflection.fromObject(serverConnection, true).
networkManagers = (List<Object>) FuzzyReflection.fromObject(serverConnection, true).
invokeMethod(null, "getNetworkManagers", List.class, serverConnection);
// Insert ProtocolLib's connection interceptor
@ -121,9 +132,7 @@ public class NettyProtocolInjector implements ChannelListener {
final List<Object> list = (List<Object>) field.getValue();
// We don't have to override this list
if (list == networkManagerList) {
// Save it for later
networkManagers = list;
if (list == networkManagers) {
continue;
}