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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "net/quic/quic_alarm.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 #include "net/quic/quic_flags.h" | |
| 9 | |
| 10 namespace net { | |
| 11 | |
| 12 QuicAlarm::QuicAlarm(QuicArenaScopedPtr<Delegate> delegate) | |
| 13 : delegate_(std::move(delegate)), deadline_(QuicTime::Zero()) {} | |
| 14 | |
| 15 QuicAlarm::~QuicAlarm() {} | |
| 16 | |
| 17 void QuicAlarm::Set(QuicTime new_deadline) { | |
| 18 DCHECK(!IsSet()); | |
| 19 DCHECK(new_deadline.IsInitialized()); | |
| 20 deadline_ = new_deadline; | |
| 21 SetImpl(); | |
| 22 } | |
| 23 | |
| 24 void QuicAlarm::Cancel() { | |
| 25 if (!IsSet()) { | |
| 26 // Don't try to cancel an alarm that hasn't been set. | |
| 27 return; | |
| 28 } | |
| 29 deadline_ = QuicTime::Zero(); | |
| 30 CancelImpl(); | |
| 31 } | |
| 32 | |
| 33 void QuicAlarm::Update(QuicTime new_deadline, QuicTime::Delta granularity) { | |
| 34 if (!new_deadline.IsInitialized()) { | |
| 35 Cancel(); | |
| 36 return; | |
| 37 } | |
| 38 if (std::abs((new_deadline - deadline_).ToMicroseconds()) < | |
| 39 granularity.ToMicroseconds()) { | |
| 40 return; | |
| 41 } | |
| 42 if (FLAGS_quic_change_alarms_efficiently) { | |
| 43 const bool was_set = IsSet(); | |
| 44 deadline_ = new_deadline; | |
| 45 if (was_set) { | |
| 46 UpdateImpl(); | |
| 47 } else { | |
| 48 SetImpl(); | |
| 49 } | |
| 50 } else { | |
| 51 Cancel(); | |
| 52 Set(new_deadline); | |
| 53 } | |
| 54 } | |
| 55 | |
| 56 bool QuicAlarm::IsSet() const { | |
| 57 return deadline_.IsInitialized(); | |
| 58 } | |
| 59 | |
| 60 void QuicAlarm::Fire() { | |
| 61 if (!IsSet()) { | |
| 62 return; | |
| 63 } | |
| 64 | |
| 65 deadline_ = QuicTime::Zero(); | |
| 66 delegate_->OnAlarm(); | |
| 67 } | |
| 68 | |
| 69 void QuicAlarm::UpdateImpl() { | |
| 70 // CancelImpl and SetImpl take the new deadline by way of the deadline_ | |
| 71 // member, so save and restore deadline_ before canceling. | |
| 72 const QuicTime new_deadline = deadline_; | |
| 73 | |
| 74 deadline_ = QuicTime::Zero(); | |
| 75 CancelImpl(); | |
| 76 | |
| 77 deadline_ = new_deadline; | |
| 78 SetImpl(); | |
| 79 } | |
| 80 | |
| 81 } // namespace net | |
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Chromium Code Reviews
Issue 2193073003:
Move shared files in net/quic/ into net/quic/core/ (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master