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geforkt von Mirrors/Paper
Paper/patches/server/0681-Allow-controlled-flushing-for-network-manager.patch
Noah van der Aa b8edb0e130
Updated Upstream (Bukkit/CraftBukkit/Spigot) (#9648)
Upstream has released updates that appear to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Bukkit Changes:
6b34da8f SPIGOT-7467: Add getAddress to RemoteConsoleCommandSender

CraftBukkit Changes:
db4ba2897 SPIGOT-7467: Add getAddress to RemoteConsoleCommandSender
4f7ff4dec PR-1246: Add missing AbstractTestingBase to tests which need them
f70a7b68d SPIGOT-7465, MC-264979: Fresh installations print NoSuchFileException for server.properties
8ef7afef6 PR-1240: Call BlockGrowEvent for vines that are growing on additional sides of an existing vine block

Spigot Changes:
d2eba2c8 Rebuild patches
2023-08-28 13:05:48 +02:00

151 Zeilen
7.5 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Sat, 4 Apr 2020 15:27:44 -0700
Subject: [PATCH] Allow controlled flushing for network manager
Only make one flush call when emptying the packet queue too
This patch will be used to optimise out flush calls in later
patches.
diff --git a/src/main/java/net/minecraft/network/Connection.java b/src/main/java/net/minecraft/network/Connection.java
index 0968827df66057ec73185ce688a62e8b27abba0c..95f5ec348ab24b28c19b46cea7b023a1d49998b5 100644
--- a/src/main/java/net/minecraft/network/Connection.java
+++ b/src/main/java/net/minecraft/network/Connection.java
@@ -126,6 +126,39 @@ public class Connection extends SimpleChannelInboundHandler<Packet<?>> {
public ConnectionProtocol protocol;
// Paper end
+ // Paper start - allow controlled flushing
+ volatile boolean canFlush = true;
+ private final java.util.concurrent.atomic.AtomicInteger packetWrites = new java.util.concurrent.atomic.AtomicInteger();
+ private int flushPacketsStart;
+ private final Object flushLock = new Object();
+
+ public void disableAutomaticFlush() {
+ synchronized (this.flushLock) {
+ this.flushPacketsStart = this.packetWrites.get(); // must be volatile and before canFlush = false
+ this.canFlush = false;
+ }
+ }
+
+ public void enableAutomaticFlush() {
+ synchronized (this.flushLock) {
+ this.canFlush = true;
+ if (this.packetWrites.get() != this.flushPacketsStart) { // must be after canFlush = true
+ this.flush(); // only make the flush call if we need to
+ }
+ }
+ }
+
+ private final void flush() {
+ if (this.channel.eventLoop().inEventLoop()) {
+ this.channel.flush();
+ } else {
+ this.channel.eventLoop().execute(() -> {
+ this.channel.flush();
+ });
+ }
+ }
+ // Paper end - allow controlled flushing
+
public Connection(PacketFlow side) {
this.receiving = side;
}
@@ -298,7 +331,7 @@ public class Connection extends SimpleChannelInboundHandler<Packet<?>> {
io.papermc.paper.util.MCUtil.isMainThread() && packet.isReady() && this.queue.isEmpty() &&
(packet.getExtraPackets() == null || packet.getExtraPackets().isEmpty())
))) {
- this.sendPacket(packet, callbacks);
+ this.sendPacket(packet, callbacks, null); // Paper
return;
}
// write the packets to the queue, then flush - antixray hooks there already
@@ -322,6 +355,14 @@ public class Connection extends SimpleChannelInboundHandler<Packet<?>> {
}
private void sendPacket(Packet<?> packet, @Nullable PacketSendListener callbacks) {
+ // Paper start - add flush parameter
+ this.sendPacket(packet, callbacks, Boolean.TRUE);
+ }
+ private void sendPacket(Packet<?> packet, @Nullable PacketSendListener callbacks, Boolean flushConditional) {
+ this.packetWrites.getAndIncrement(); // must be befeore using canFlush
+ boolean effectiveFlush = flushConditional == null ? this.canFlush : flushConditional.booleanValue();
+ final boolean flush = effectiveFlush || packet instanceof net.minecraft.network.protocol.game.ClientboundKeepAlivePacket || packet instanceof ClientboundDisconnectPacket; // no delay for certain packets
+ // Paper end - add flush parameter
ConnectionProtocol enumprotocol = ConnectionProtocol.getProtocolForPacket(packet);
ConnectionProtocol enumprotocol1 = this.getCurrentProtocol();
@@ -336,16 +377,21 @@ public class Connection extends SimpleChannelInboundHandler<Packet<?>> {
}
if (this.channel.eventLoop().inEventLoop()) {
- this.doSendPacket(packet, callbacks, enumprotocol, enumprotocol1);
+ this.doSendPacket(packet, callbacks, enumprotocol, enumprotocol1, flush); // Paper
} else {
this.channel.eventLoop().execute(() -> {
- this.doSendPacket(packet, callbacks, enumprotocol, enumprotocol1);
+ this.doSendPacket(packet, callbacks, enumprotocol, enumprotocol1, flush); // Paper
});
}
}
private void doSendPacket(Packet<?> packet, @Nullable PacketSendListener callbacks, ConnectionProtocol packetState, ConnectionProtocol currentState) {
+ // Paper start - add flush parameter
+ this.doSendPacket(packet, callbacks, packetState, currentState, true);
+ }
+ private void doSendPacket(Packet<?> packet, @Nullable PacketSendListener callbacks, ConnectionProtocol packetState, ConnectionProtocol currentState, boolean flush) {
+ // Paper end - add flush parameter
if (packetState != currentState) {
this.setProtocol(packetState);
}
@@ -359,7 +405,7 @@ public class Connection extends SimpleChannelInboundHandler<Packet<?>> {
try {
// Paper end
- ChannelFuture channelfuture = this.channel.writeAndFlush(packet);
+ ChannelFuture channelfuture = flush ? this.channel.writeAndFlush(packet) : this.channel.write(packet); // Paper - add flush parameter
if (callbacks != null) {
channelfuture.addListener((future) -> {
@@ -415,6 +461,10 @@ public class Connection extends SimpleChannelInboundHandler<Packet<?>> {
private boolean processQueue() {
try { // Paper - add pending task queue
if (this.queue.isEmpty()) return true;
+ // Paper start - make only one flush call per sendPacketQueue() call
+ final boolean needsFlush = this.canFlush;
+ boolean hasWrotePacket = false;
+ // Paper end - make only one flush call per sendPacketQueue() call
// If we are on main, we are safe here in that nothing else should be processing queue off main anymore
// But if we are not on main due to login/status, the parent is synchronized on packetQueue
java.util.Iterator<PacketHolder> iterator = this.queue.iterator();
@@ -422,7 +472,7 @@ public class Connection extends SimpleChannelInboundHandler<Packet<?>> {
PacketHolder queued = iterator.next(); // poll -> peek
// Fix NPE (Spigot bug caused by handleDisconnection())
- if (queued == null) {
+ if (false && queued == null) { // Paper - diff on change, this logic is redundant: iterator guarantees ret of an element - on change, hook the flush logic here
return true;
}
@@ -434,11 +484,17 @@ public class Connection extends SimpleChannelInboundHandler<Packet<?>> {
Packet<?> packet = queued.packet;
if (!packet.isReady()) {
+ // Paper start - make only one flush call per sendPacketQueue() call
+ if (hasWrotePacket && (needsFlush || this.canFlush)) {
+ this.flush();
+ }
+ // Paper end - make only one flush call per sendPacketQueue() call
return false;
} else {
iterator.remove();
if (queued.tryMarkConsumed()) { // Paper - try to mark isConsumed flag for de-duplicating packet
- this.sendPacket(packet, queued.listener);
+ this.sendPacket(packet, queued.listener, (!iterator.hasNext() && (needsFlush || this.canFlush)) ? Boolean.TRUE : Boolean.FALSE); // Paper - make only one flush call per sendPacketQueue() call
+ hasWrotePacket = true; // Paper - make only one flush call per sendPacketQueue() call
}
}
}