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Recycle RecyclableArrayDeque as fast as possible in FlowControlHandler (#9263)

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Motivation:

FlowControlHandler does use a recyclable ArrayDeque internally but only recycles it when the channel is closed. We should better recycle it once it is empty.

Modifications:

Recycle the deque as fast as possible

Result:

Less RecyclableArrayDeque instances.
This commit is contained in:
Norman Maurer 2019-06-22 07:27:04 +02:00 committed by GitHub
parent 430eeee2f6
commit 2c99fc0f12
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1 changed files with 8 additions and 3 deletions
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11
handler/src/main/java/io/netty/handler/flow/FlowControlHandler.java
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@ -88,7 +88,7 @@ public class FlowControlHandler extends ChannelDuplexHandler {
* testing, debugging and inspection purposes and it is not Thread safe!
*/
boolean isQueueEmpty() {
return queue.isEmpty();
return queue == null || queue.isEmpty();
}
/**
@ -190,8 +190,13 @@ public class FlowControlHandler extends ChannelDuplexHandler {
// We're firing a completion event every time one (or more)
// messages were consumed and the queue ended up being drained
// to an empty state.
if (queue.isEmpty() && consumed > 0) {
ctx.fireChannelReadComplete();
if (queue.isEmpty()) {
queue.recycle();
queue = null;
if (consumed > 0) {
ctx.fireChannelReadComplete();
}
}
return consumed;