56 lines
1.4 KiB
C++
56 lines
1.4 KiB
C++
// Copyright 2019 The MediaPipe Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "mediapipe/framework/deps/clock.h"
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#include "absl/time/clock.h"
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#include "mediapipe/framework/port/logging.h"
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namespace mediapipe {
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namespace {
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// -----------------------------------------------------------------
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// RealTimeClock
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//
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// This class is thread-safe.
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class RealTimeClock : public Clock {
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public:
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virtual ~RealTimeClock() {
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LOG(FATAL) << "RealTimeClock should never be destroyed";
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}
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absl::Time TimeNow() override { return absl::Now(); }
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void Sleep(absl::Duration d) override { absl::SleepFor(d); }
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void SleepUntil(absl::Time wakeup_time) override {
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absl::Duration d = wakeup_time - TimeNow();
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if (d > absl::ZeroDuration()) {
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Sleep(d);
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}
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}
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};
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} // namespace
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Clock::~Clock() {}
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Clock* Clock::RealClock() {
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static RealTimeClock* rtclock = new RealTimeClock;
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return rtclock;
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}
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} // namespace mediapipe
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