1 /* 2 * Copyright 2019 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 #ifndef TEST_TIME_CONTROLLER_EXTERNAL_TIME_CONTROLLER_H_ 11 #define TEST_TIME_CONTROLLER_EXTERNAL_TIME_CONTROLLER_H_ 12 13 #include <functional> 14 #include <memory> 15 16 #include "absl/strings/string_view.h" 17 #include "api/task_queue/task_queue_base.h" 18 #include "api/task_queue/task_queue_factory.h" 19 #include "api/test/time_controller.h" 20 #include "api/units/time_delta.h" 21 #include "api/units/timestamp.h" 22 #include "system_wrappers/include/clock.h" 23 #include "test/time_controller/simulated_time_controller.h" 24 25 namespace webrtc { 26 27 // TimeController implementation built on an external controlled alarm. 28 // This implementation is used to delegate scheduling and execution to an 29 // external run loop. 30 class ExternalTimeController : public TimeController, public TaskQueueFactory { 31 public: 32 explicit ExternalTimeController(ControlledAlarmClock* alarm); 33 34 // Implementation of TimeController. 35 Clock* GetClock() override; 36 TaskQueueFactory* GetTaskQueueFactory() override; 37 void AdvanceTime(TimeDelta duration) override; 38 std::unique_ptr<rtc::Thread> CreateThread( 39 const std::string& name, 40 std::unique_ptr<rtc::SocketServer> socket_server) override; 41 rtc::Thread* GetMainThread() override; 42 43 // Implementation of TaskQueueFactory. 44 std::unique_ptr<TaskQueueBase, TaskQueueDeleter> CreateTaskQueue( 45 absl::string_view name, 46 TaskQueueFactory::Priority priority) const override; 47 48 private: 49 class TaskQueueWrapper; 50 51 // Executes any tasks scheduled at or before the current time. May call 52 // `ScheduleNext` to schedule the next call to `Run`. 53 void Run(); 54 55 void UpdateTime(); 56 void ScheduleNext(); 57 58 ControlledAlarmClock* alarm_; 59 sim_time_impl::SimulatedTimeControllerImpl impl_; 60 rtc::ScopedYieldPolicy yield_policy_; 61 62 // Overrides the global rtc::Clock to ensure that it reports the same times as 63 // the time controller. 64 rtc::ScopedBaseFakeClock global_clock_; 65 }; 66 67 } // namespace webrtc 68 69 #endif // TEST_TIME_CONTROLLER_EXTERNAL_TIME_CONTROLLER_H_ 70