mirror of
https://github.com/klzgrad/naiveproxy.git
synced 2024-11-24 22:36:09 +03:00
34 lines
1.1 KiB
C++
34 lines
1.1 KiB
C++
|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
|
||
|
|
// Use of this source code is governed by a BSD-style license that can be
|
||
|
|
// found in the LICENSE file.
|
||
|
|
|
||
|
|
#include "net/quic/chromium/quic_clock_skew_detector.h"
|
||
|
|
|
||
|
|
#include "base/metrics/histogram_macros.h"
|
||
|
|
|
||
|
|
namespace net {
|
||
|
|
|
||
|
|
QuicClockSkewDetector::QuicClockSkewDetector(base::TimeTicks ticks_time,
|
||
|
|
base::Time wall_time)
|
||
|
|
: last_ticks_time_(ticks_time), last_wall_time_(wall_time) {}
|
||
|
|
|
||
|
|
bool QuicClockSkewDetector::ClockSkewDetected(base::TimeTicks ticks_now,
|
||
|
|
base::Time wall_now) {
|
||
|
|
base::TimeDelta ticks_delta = ticks_now - last_ticks_time_;
|
||
|
|
base::TimeDelta wall_delta = wall_now - last_wall_time_;
|
||
|
|
base::TimeDelta offset = wall_delta - ticks_delta;
|
||
|
|
last_wall_time_ = wall_now;
|
||
|
|
last_ticks_time_ = ticks_now;
|
||
|
|
|
||
|
|
UMA_HISTOGRAM_TIMES(
|
||
|
|
"Net.QuicClock.SkewOffset",
|
||
|
|
base::TimeDelta::FromMicroseconds(offset.InMicroseconds()));
|
||
|
|
|
||
|
|
if (offset < base::TimeDelta::FromSeconds(1))
|
||
|
|
return false;
|
||
|
|
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace net
|