blob: 927e6b2808817326f6bc1358d05aec0d55723ace [file] [log] [blame]
* Copyright (c) 2021 The WebRTC project authors. All Rights Reserved.
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
#include <cstdint>
#include <functional>
#include <limits>
#include <memory>
#include <unordered_set>
#include <utility>
#include <vector>
#include "absl/types/optional.h"
#include "net/dcsctp/public/timeout.h"
#include "rtc_base/checks.h"
namespace dcsctp {
// A timeout used in tests.
class FakeTimeout : public Timeout {
explicit FakeTimeout(std::function<TimeMs()> get_time,
std::function<void(FakeTimeout*)> on_delete)
: get_time_(std::move(get_time)), on_delete_(std::move(on_delete)) {}
~FakeTimeout() override { on_delete_(this); }
void Start(DurationMs duration_ms, TimeoutID timeout_id) override {
RTC_DCHECK(expiry_ == TimeMs::InfiniteFuture());
timeout_id_ = timeout_id;
expiry_ = get_time_() + duration_ms;
void Stop() override {
RTC_DCHECK(expiry_ != TimeMs::InfiniteFuture());
expiry_ = TimeMs::InfiniteFuture();
bool EvaluateHasExpired(TimeMs now) {
if (now >= expiry_) {
expiry_ = TimeMs::InfiniteFuture();
return true;
return false;
TimeoutID timeout_id() const { return timeout_id_; }
const std::function<TimeMs()> get_time_;
const std::function<void(FakeTimeout*)> on_delete_;
TimeoutID timeout_id_ = TimeoutID(0);
TimeMs expiry_ = TimeMs::InfiniteFuture();
class FakeTimeoutManager {
// The `get_time` function must return the current time, relative to any
// epoch.
explicit FakeTimeoutManager(std::function<TimeMs()> get_time)
: get_time_(std::move(get_time)) {}
std::unique_ptr<Timeout> CreateTimeout() {
auto timer = std::make_unique<FakeTimeout>(
get_time_, [this](FakeTimeout* timer) { timers_.erase(timer); });
return timer;
// NOTE: This can't return a vector, as calling EvaluateHasExpired requires
// calling socket->HandleTimeout directly afterwards, as the owning Timer
// still believes it's running, and it needs to be updated to set
// Timer::is_running_ to false before you operate on the Timer or Timeout
// again.
absl::optional<TimeoutID> GetNextExpiredTimeout() {
TimeMs now = get_time_();
std::vector<TimeoutID> expired_timers;
for (auto& timer : timers_) {
if (timer->EvaluateHasExpired(now)) {
return timer->timeout_id();
return absl::nullopt;
const std::function<TimeMs()> get_time_;
std::unordered_set<FakeTimeout*> timers_;
} // namespace dcsctp