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9861f960c3
To be able to use them type-safely, they should support native operators (e.g. adding a time and a duration, or subtracting two time values), as the alternative is to manage them as numbers. Yes, this makes them behave a bit like absl::Time/absl::Duration. Bug: webrtc:12614 Change-Id: I4dea12e33698a46e71fb549f44c06f2f381c9201 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/215143 Reviewed-by: Tommi <tommi@webrtc.org> Commit-Queue: Victor Boivie <boivie@webrtc.org> Cr-Commit-Position: refs/heads/master@{#33725}
94 lines
2.6 KiB
C++
94 lines
2.6 KiB
C++
/*
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* Copyright (c) 2021 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef NET_DCSCTP_TIMER_FAKE_TIMEOUT_H_
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#define NET_DCSCTP_TIMER_FAKE_TIMEOUT_H_
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#include <cstdint>
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#include <functional>
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#include <limits>
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#include <memory>
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#include <unordered_set>
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#include <utility>
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#include <vector>
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#include "net/dcsctp/public/timeout.h"
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namespace dcsctp {
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// A timeout used in tests.
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class FakeTimeout : public Timeout {
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public:
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explicit FakeTimeout(std::function<TimeMs()> get_time,
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std::function<void(FakeTimeout*)> on_delete)
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: get_time_(std::move(get_time)), on_delete_(std::move(on_delete)) {}
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~FakeTimeout() override { on_delete_(this); }
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void Start(DurationMs duration_ms, TimeoutID timeout_id) override {
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timeout_id_ = timeout_id;
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expiry_ = get_time_() + duration_ms;
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}
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void Stop() override { expiry_ = InfiniteFuture(); }
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bool EvaluateHasExpired(TimeMs now) {
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if (now >= expiry_) {
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expiry_ = InfiniteFuture();
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return true;
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}
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return false;
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}
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TimeoutID timeout_id() const { return timeout_id_; }
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private:
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static constexpr TimeMs InfiniteFuture() {
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return TimeMs(std::numeric_limits<TimeMs::UnderlyingType>::max());
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}
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const std::function<TimeMs()> get_time_;
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const std::function<void(FakeTimeout*)> on_delete_;
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TimeoutID timeout_id_ = TimeoutID(0);
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TimeMs expiry_ = InfiniteFuture();
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};
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class FakeTimeoutManager {
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public:
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// The `get_time` function must return the current time, relative to any
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// epoch.
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explicit FakeTimeoutManager(std::function<TimeMs()> get_time)
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: get_time_(std::move(get_time)) {}
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std::unique_ptr<Timeout> CreateTimeout() {
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auto timer = std::make_unique<FakeTimeout>(
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get_time_, [this](FakeTimeout* timer) { timers_.erase(timer); });
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timers_.insert(timer.get());
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return timer;
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}
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std::vector<TimeoutID> RunTimers() {
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TimeMs now = get_time_();
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std::vector<TimeoutID> expired_timers;
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for (auto& timer : timers_) {
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if (timer->EvaluateHasExpired(now)) {
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expired_timers.push_back(timer->timeout_id());
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}
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}
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return expired_timers;
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}
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private:
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const std::function<TimeMs()> get_time_;
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std::unordered_set<FakeTimeout*> timers_;
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};
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} // namespace dcsctp
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#endif // NET_DCSCTP_TIMER_FAKE_TIMEOUT_H_
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