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Diffstat (limited to '')
-rw-r--r-- | third_party/libwebrtc/test/time_controller/simulated_task_queue.cc | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/third_party/libwebrtc/test/time_controller/simulated_task_queue.cc b/third_party/libwebrtc/test/time_controller/simulated_task_queue.cc new file mode 100644 index 0000000000..3c26721845 --- /dev/null +++ b/third_party/libwebrtc/test/time_controller/simulated_task_queue.cc @@ -0,0 +1,89 @@ +/* + * Copyright (c) 2020 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 "test/time_controller/simulated_task_queue.h" + +#include <algorithm> +#include <utility> + +namespace webrtc { + +SimulatedTaskQueue::SimulatedTaskQueue( + sim_time_impl::SimulatedTimeControllerImpl* handler, + absl::string_view name) + : handler_(handler), name_(new char[name.size()]) { + std::copy_n(name.begin(), name.size(), name_); +} + +SimulatedTaskQueue::~SimulatedTaskQueue() { + handler_->Unregister(this); + delete[] name_; +} + +void SimulatedTaskQueue::Delete() { + // Need to destroy the tasks outside of the lock because task destruction + // can lead to re-entry in SimulatedTaskQueue via custom destructors. + std::deque<absl::AnyInvocable<void() &&>> ready_tasks; + std::map<Timestamp, std::vector<absl::AnyInvocable<void() &&>>> delayed_tasks; + { + MutexLock lock(&lock_); + ready_tasks_.swap(ready_tasks); + delayed_tasks_.swap(delayed_tasks); + } + ready_tasks.clear(); + delayed_tasks.clear(); + delete this; +} + +void SimulatedTaskQueue::RunReady(Timestamp at_time) { + MutexLock lock(&lock_); + for (auto it = delayed_tasks_.begin(); + it != delayed_tasks_.end() && it->first <= at_time; + it = delayed_tasks_.erase(it)) { + for (auto& task : it->second) { + ready_tasks_.push_back(std::move(task)); + } + } + CurrentTaskQueueSetter set_current(this); + while (!ready_tasks_.empty()) { + absl::AnyInvocable<void()&&> ready = std::move(ready_tasks_.front()); + ready_tasks_.pop_front(); + lock_.Unlock(); + std::move(ready)(); + ready = nullptr; + lock_.Lock(); + } + if (!delayed_tasks_.empty()) { + next_run_time_ = delayed_tasks_.begin()->first; + } else { + next_run_time_ = Timestamp::PlusInfinity(); + } +} + +void SimulatedTaskQueue::PostTask(absl::AnyInvocable<void() &&> task) { + MutexLock lock(&lock_); + ready_tasks_.push_back(std::move(task)); + next_run_time_ = Timestamp::MinusInfinity(); +} + +void SimulatedTaskQueue::PostDelayedTask(absl::AnyInvocable<void() &&> task, + TimeDelta delay) { + PostDelayedHighPrecisionTask(std::move(task), delay); +} + +void SimulatedTaskQueue::PostDelayedHighPrecisionTask( + absl::AnyInvocable<void() &&> task, + TimeDelta delay) { + MutexLock lock(&lock_); + Timestamp target_time = handler_->CurrentTime() + delay; + delayed_tasks_[target_time].push_back(std::move(task)); + next_run_time_ = std::min(next_run_time_, target_time); +} + +} // namespace webrtc |