1 // Copyright 2024 The Pigweed Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not 4 // use this file except in compliance with the License. You may obtain a copy of 5 // the License at 6 // 7 // https://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 12 // License for the specific language governing permissions and limitations under 13 // the License. 14 15 #include "pw_async2/system_time_provider.h" 16 17 #include "pw_chrono/system_timer.h" 18 #include "pw_toolchain/no_destructor.h" 19 20 namespace pw::async2 { 21 namespace { 22 23 using ::pw::chrono::SystemClock; 24 25 class SystemTimeProvider final : public TimeProvider<SystemClock> { 26 public: SystemTimeProvider()27 SystemTimeProvider() 28 : timer_( 29 [this](SystemClock::time_point expired) { RunExpired(expired); }) {} 30 31 private: now()32 SystemClock::time_point now() final { return SystemClock::now(); } 33 DoInvokeAt(SystemClock::time_point time_point)34 void DoInvokeAt(SystemClock::time_point time_point) final { 35 timer_.InvokeAt(time_point); 36 } 37 DoCancel()38 void DoCancel() final { timer_.Cancel(); } 39 40 pw::chrono::SystemTimer timer_; 41 }; 42 43 } // namespace 44 GetSystemTimeProvider()45TimeProvider<SystemClock>& GetSystemTimeProvider() { 46 static pw::NoDestructor<SystemTimeProvider> time_provider; 47 return *time_provider; 48 } 49 50 } // namespace pw::async2 51