| /* |
| * Copyright 2016 Google Inc. All rights reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef SPEEDTEST_TRANSFER_RUNNER_H |
| #define SPEEDTEST_TRANSFER_RUNNER_H |
| |
| #include <functional> |
| #include <mutex> |
| #include <thread> |
| #include <vector> |
| #include "task.h" |
| #include "transfer_task.h" |
| |
| namespace speedtest { |
| |
| struct Interval { |
| long bytes = 0; |
| long running_time = 0; |
| double short_megabits = 0.0; |
| double long_megabits = 0.0; |
| }; |
| |
| // Run a variable length transfer test using two moving averages. |
| // The test runs between min_runtime and max_runtime and otherwise |
| // ends when the speed is "stable" meaning the two moving averages |
| // are relatively close to one another. |
| class TransferRunner : public Task { |
| public: |
| struct Options : public Task::Options { |
| TransferTask *task = nullptr; |
| int min_runtime = 0; |
| int max_runtime = 0; |
| int interval_millis = 0; |
| int progress_millis = 0; |
| int min_intervals = 0; |
| int max_intervals = 0; |
| double max_variance = 0.0; |
| bool exponential_moving_average = false; |
| std::function<void(Interval)> progress_fn; |
| }; |
| |
| explicit TransferRunner(const Options &options); |
| |
| double GetSpeedInMegabits() const; |
| Interval GetLastInterval() const; |
| |
| protected: |
| void RunInternal() override; |
| void StopInternal() override; |
| |
| private: |
| const Interval &AddInterval(); |
| double GetSimpleAverage(int num_intervals); |
| double GetShortEma(int num_intervals); |
| double GetLongEma(int num_intervals); |
| |
| Options options_; |
| |
| mutable std::mutex mutex_; |
| std::vector<Interval> intervals_; |
| std::vector<std::thread> threads_; |
| double speed_; |
| |
| // disallowed |
| TransferRunner(const TransferRunner &) = delete; |
| void operator=(const TransferRunner &) = delete; |
| }; |
| |
| } // namespace |
| |
| #endif //SPEEDTEST_TRANSFER_RUNNER_H |