tor-browser

The Tor Browser
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fake_metronome.cc (2018B)

      1 /*
      2 *  Copyright (c) 2022 The WebRTC project authors. All Rights Reserved.
      3 *
      4 *  Use of this source code is governed by a BSD-style license
      5 *  that can be found in the LICENSE file in the root of the source
      6 *  tree. An additional intellectual property rights grant can be found
      7 *  in the file PATENTS.  All contributing project authors may
      8 *  be found in the AUTHORS file in the root of the source tree.
      9 */
     10 
     11 #include "api/metronome/test/fake_metronome.h"
     12 
     13 #include <cstddef>
     14 #include <utility>
     15 #include <vector>
     16 
     17 #include "absl/functional/any_invocable.h"
     18 #include "api/task_queue/task_queue_base.h"
     19 #include "api/units/time_delta.h"
     20 
     21 namespace webrtc::test {
     22 
     23 ForcedTickMetronome::ForcedTickMetronome(TimeDelta tick_period)
     24    : tick_period_(tick_period) {}
     25 
     26 void ForcedTickMetronome::RequestCallOnNextTick(
     27    absl::AnyInvocable<void() &&> callback) {
     28  callbacks_.push_back(std::move(callback));
     29 }
     30 
     31 TimeDelta ForcedTickMetronome::TickPeriod() const {
     32  return tick_period_;
     33 }
     34 
     35 size_t ForcedTickMetronome::NumListeners() {
     36  return callbacks_.size();
     37 }
     38 
     39 void ForcedTickMetronome::Tick() {
     40  std::vector<absl::AnyInvocable<void() &&>> callbacks;
     41  callbacks_.swap(callbacks);
     42  for (auto& callback : callbacks)
     43    std::move(callback)();
     44 }
     45 
     46 FakeMetronome::FakeMetronome(TimeDelta tick_period)
     47    : tick_period_(tick_period) {}
     48 
     49 void FakeMetronome::SetTickPeriod(TimeDelta tick_period) {
     50  tick_period_ = tick_period;
     51 }
     52 
     53 void FakeMetronome::RequestCallOnNextTick(
     54    absl::AnyInvocable<void() &&> callback) {
     55  TaskQueueBase* current = TaskQueueBase::Current();
     56  callbacks_.push_back(std::move(callback));
     57  if (callbacks_.size() == 1) {
     58    current->PostDelayedTask(
     59        [this] {
     60          std::vector<absl::AnyInvocable<void() &&>> callbacks;
     61          callbacks_.swap(callbacks);
     62          for (auto& callback : callbacks)
     63            std::move(callback)();
     64        },
     65        tick_period_);
     66  }
     67 }
     68 
     69 TimeDelta FakeMetronome::TickPeriod() const {
     70  return tick_period_;
     71 }
     72 
     73 }  // namespace webrtc::test