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perf(http2): eagerly poll some futures in h2 dispatchers before allocating in executor

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This commit is contained in:
Sean McArthur
2018-10-24 15:04:30 -07:00
parent dcf0347151
commit 94e02ac276
3 changed files with 85 additions and 49 deletions
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24
src/proto/h2/client.rs
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@@ -122,14 +122,22 @@ where
}
};
if !eos {
let conn_drop_ref = conn_dropper.clone();
let pipe = PipeToSendStream::new(body, body_tx)
.map_err(|e| debug!("client request body error: {}", e))
.then(move |x| {
drop(conn_drop_ref);
x
});
self.executor.execute(pipe)?;
let mut pipe = PipeToSendStream::new(body, body_tx)
.map_err(|e| debug!("client request body error: {}", e));
// eagerly see if the body pipe is ready and
// can thus skip allocating in the executor
match pipe.poll() {
Ok(Async::Ready(())) | Err(()) => (),
Ok(Async::NotReady) => {
let conn_drop_ref = conn_dropper.clone();
let pipe = pipe.then(move |x| {
drop(conn_drop_ref);
x
});
self.executor.execute(pipe)?;
}
}
}
let fut = fut