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Reuse the tick buffer when possible & avoid iteration

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Signed-off-by: TheMode <themode@outlook.fr>
This commit is contained in:
TheMode 2021-09-22 23:24:22 +02:00
parent d5d4a97694
commit 68107c9a90
1 changed files with 45 additions and 31 deletions
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76
src/main/java/net/minestom/server/network/player/PlayerSocketConnection.java
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@ -263,46 +263,60 @@ public class PlayerSocketConnection extends PlayerConnection {
@Override
public void flush() {
boolean shouldDisconnect = false;
synchronized (bufferLock) {
final BinaryBuffer localBuffer = tickBuffer.getPlain();
if (localBuffer.readableBytes() == 0 && waitingBuffers.isEmpty()) return;
// Update tick buffer
try {
this.tickBuffer.setPlain(PooledBuffers.get());
if (encrypted) {
final Cipher cipher = encryptCipher;
// Encrypt data first
ByteBuffer cipherInput = localBuffer.asByteBuffer(0, localBuffer.writerOffset());
try {
cipher.update(cipherInput, cipherInput.duplicate());
} catch (ShortBufferException e) {
MinecraftServer.getExceptionManager().handleException(e);
try {
synchronized (bufferLock) {
final BinaryBuffer localBuffer = tickBuffer.getPlain();
final boolean emptyWaitingList = waitingBuffers.isEmpty();
if (localBuffer.readableBytes() == 0 && emptyWaitingList) return;
// Update tick buffer
try {
// Encryption support
if (encrypted) {
ByteBuffer cipherInput = localBuffer.asByteBuffer(0, localBuffer.writerOffset());
try {
this.encryptCipher.update(cipherInput, cipherInput.duplicate());
} catch (ShortBufferException e) {
MinecraftServer.getExceptionManager().handleException(e);
}
}
}
this.waitingBuffers.add(localBuffer);
Iterator<BinaryBuffer> iterator = waitingBuffers.iterator();
while (iterator.hasNext()) {
BinaryBuffer waitingBuffer = iterator.next();
try {
if (!waitingBuffer.writeChannel(channel)) break;
iterator.remove();
PooledBuffers.add(waitingBuffer);
} catch (ClosedChannelException e) {
shouldDisconnect = true;
// Try to write the current buffer
if (emptyWaitingList && localBuffer.writeChannel(channel)) {
// Can reuse buffer
localBuffer.clear();
return;
}
this.tickBuffer.setPlain(PooledBuffers.get());
this.waitingBuffers.add(localBuffer);
if (emptyWaitingList) return;
// Write as much as possible from the waiting list
Iterator<BinaryBuffer> iterator = waitingBuffers.iterator();
while (iterator.hasNext()) {
BinaryBuffer waitingBuffer = iterator.next();
try {
if (!waitingBuffer.writeChannel(channel)) break;
iterator.remove();
PooledBuffers.add(waitingBuffer);
} catch (IOException e) {
MinecraftServer.getExceptionManager().handleException(e);
throw new ClosedChannelException();
}
}
} catch (IOException e) {
MinecraftServer.getExceptionManager().handleException(e);
shouldDisconnect = true;
throw new ClosedChannelException();
}
} catch (OutOfMemoryError e) {
this.waitingBuffers.clear();
System.gc(); // Explicit gc forcing buffers to be collected
throw new ClosedChannelException();
}
} catch (OutOfMemoryError e) {
this.waitingBuffers.clear();
System.gc(); // Explicit gc forcing buffers to be collected
shouldDisconnect = true;
}
} catch (ClosedChannelException e) {
disconnect();
}
if (shouldDisconnect) disconnect();
}
@Override