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Improve ping time measurements.

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Don't measure response times if other requests are pending.
This commit is contained in:
Konstantin Seiler 2019-11-02 17:19:31 +11:00
parent af6e33bfa0
commit c991974f82
1 changed files with 24 additions and 9 deletions
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33
audio/src/fetch.rs
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@ -201,6 +201,7 @@ struct AudioFileShared {
file_size: usize,
cond: Condvar,
download_status: Mutex<AudioFileDownloadStatus>,
number_of_open_requests: AtomicUsize,
ping_time_ms: AtomicUsize,
read_position: AtomicUsize,
}
@ -213,6 +214,7 @@ impl AudioFileOpenStreaming {
file_size: size,
cond: Condvar::new(),
download_status: Mutex::new(AudioFileDownloadStatus {requested: RangeSet::new(), downloaded: RangeSet::new()}),
number_of_open_requests: AtomicUsize::new(0),
ping_time_ms: AtomicUsize::new(0),
read_position: AtomicUsize::new(0),
});
@ -433,6 +435,7 @@ struct AudioFileFetchDataReceiver {
data_offset: usize,
request_length: usize,
request_sent_time: Option<Instant>,
measure_ping_time: bool,
}
impl AudioFileFetchDataReceiver {
@ -445,6 +448,10 @@ impl AudioFileFetchDataReceiver {
request_sent_time: Instant,
) -> AudioFileFetchDataReceiver {
let measure_ping_time = shared.number_of_open_requests.load(atomic::Ordering::SeqCst) == 0;
shared.number_of_open_requests.fetch_add(1, atomic::Ordering::SeqCst);
AudioFileFetchDataReceiver {
shared: shared,
data_rx: data_rx,
@ -452,6 +459,7 @@ impl AudioFileFetchDataReceiver {
data_offset: data_offset,
request_length: request_length,
request_sent_time: Some(request_sent_time),
measure_ping_time: measure_ping_time,
}
}
}
@ -468,6 +476,9 @@ impl AudioFileFetchDataReceiver {
download_status.requested.subtract_range(&missing_range);
self.shared.cond.notify_all();
}
self.shared.number_of_open_requests.fetch_sub(1, atomic::Ordering::SeqCst);
}
}
@ -480,15 +491,18 @@ impl Future for AudioFileFetchDataReceiver {
trace!("Looping data_receiver for offset {} and length {}", self.data_offset, self.request_length);
match self.data_rx.poll() {
Ok(Async::Ready(Some(data))) => {
if let Some(request_sent_time) = self.request_sent_time {
let duration = Instant::now() - request_sent_time;
let duration_ms: u64;
if duration.as_secs() > MAXIMUM_ASSUMED_PING_TIME_SECONDS {
duration_ms = MAXIMUM_ASSUMED_PING_TIME_SECONDS * 1000;
}else {
duration_ms = duration.as_secs() *1000 + duration.subsec_millis() as u64;
if self.measure_ping_time {
if let Some(request_sent_time) = self.request_sent_time {
let duration = Instant::now() - request_sent_time;
let duration_ms: u64;
if duration.as_secs() > MAXIMUM_ASSUMED_PING_TIME_SECONDS {
duration_ms = MAXIMUM_ASSUMED_PING_TIME_SECONDS * 1000;
} else {
duration_ms = duration.as_secs() * 1000 + duration.subsec_millis() as u64;
}
let _ = self.file_data_tx.unbounded_send(ReceivedData::ResponseTimeMs(duration_ms as usize));
self.measure_ping_time = false;
}
let _ = self.file_data_tx.unbounded_send(ReceivedData::ResponseTimeMs(duration_ms as usize));
}
let data_size = data.len();
trace!("data_receiver got {} bytes of data", data_size);
@ -502,14 +516,15 @@ impl Future for AudioFileFetchDataReceiver {
}
if self.request_length == 0 {
trace!("Data receiver completed at position {}", self.data_offset);
self.finish();
return Ok(Async::Ready(()));
}
}
Ok(Async::Ready(None)) => {
if self.request_length > 0 {
warn!("Received less data from server than requested.");
self.finish();
}
self.finish();
return Ok(Async::Ready(()));
}
Ok(Async::NotReady) => {