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 "modules/utility/include/process_thread.h" 23 #include "system_wrappers/include/clock.h" 24 #include "test/time_controller/simulated_time_controller.h" 25 26 namespace webrtc { 27 28 // TimeController implementation built on an external controlled alarm. 29 // This implementation is used to delegate scheduling and execution to an 30 // external run loop. 31 class ExternalTimeController : public TimeController, public TaskQueueFactory { 32 public: 33 explicit ExternalTimeController(ControlledAlarmClock* alarm); 34 35 // Implementation of TimeController. 36 Clock* GetClock() override; 37 TaskQueueFactory* GetTaskQueueFactory() override; 38 std::unique_ptr<ProcessThread> CreateProcessThread( 39 const char* thread_name) override; 40 void AdvanceTime(TimeDelta duration) override; 41 std::unique_ptr<rtc::Thread> CreateThread( 42 const std::string& name, 43 std::unique_ptr<rtc::SocketServer> socket_server) override; 44 rtc::Thread* GetMainThread() override; 45 46 // Implementation of TaskQueueFactory. 47 std::unique_ptr<TaskQueueBase, TaskQueueDeleter> CreateTaskQueue( 48 absl::string_view name, 49 TaskQueueFactory::Priority priority) const override; 50 51 private: 52 class ProcessThreadWrapper; 53 class TaskQueueWrapper; 54 55 // Executes any tasks scheduled at or before the current time. May call 56 // |ScheduleNext| to schedule the next call to |Run|. 57 void Run(); 58 59 void UpdateTime(); 60 void ScheduleNext(); 61 62 ControlledAlarmClock* alarm_; 63 sim_time_impl::SimulatedTimeControllerImpl impl_; 64 rtc::ScopedYieldPolicy yield_policy_; 65 66 // Overrides the global rtc::Clock to ensure that it reports the same times as 67 // the time controller. 68 rtc::ScopedBaseFakeClock global_clock_; 69 }; 70 71 } // namespace webrtc 72 73 #endif // TEST_TIME_CONTROLLER_EXTERNAL_TIME_CONTROLLER_H_ 74