boolean open = true;
boolean addOpWrite = false;
boolean removeOpWrite = false;
MessageEvent evt;
ChannelBuffer buf;
int bufIdx;
int writtenBytes = 0;
synchronized (channel.writeLock) {
Queue<MessageEvent> writeBuffer = channel.writeBuffer;
evt = channel.currentWriteEvent;
for (;;) {
if (evt == null) {
evt = writeBuffer.poll();
if (evt == null) {
channel.currentWriteEvent = null;
removeOpWrite = true;
break;
}
buf = (ChannelBuffer) evt.getMessage();
bufIdx = buf.readerIndex();
} else {
buf = (ChannelBuffer) evt.getMessage();
bufIdx = channel.currentWriteIndex;
}
try {
for (int i = writeSpinCount; i > 0; i --) {
int localWrittenBytes = buf.getBytes(
bufIdx,
channel.socket,
Math.min(
maxWrittenBytes - writtenBytes,
buf.writerIndex() - bufIdx));
if (localWrittenBytes != 0) {
writtenBytes += localWrittenBytes;
bufIdx += localWrittenBytes;
break;
}
}
if (bufIdx == buf.writerIndex()) {
// Successful write - proceed to the next message.
evt.getFuture().setSuccess();
evt = null;
} else {
// Not written fully - perhaps the kernel buffer is full.
channel.currentWriteEvent = evt;
channel.currentWriteIndex = bufIdx;
addOpWrite = true;
break;
}
} catch (AsynchronousCloseException e) {
// Doesn't need a user attention - ignore.
} catch (Throwable t) {
evt.getFuture().setFailure(t);
evt = null;
fireExceptionCaught(channel, t);
if (t instanceof IOException) {
open = false;
close(channel, channel.getSucceededFuture());