84 lines
2.2 KiB
C
84 lines
2.2 KiB
C
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/*
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* Copyright 2016 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef RTC_BASE_FAKE_CLOCK_H_
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#define RTC_BASE_FAKE_CLOCK_H_
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#include <stdint.h>
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#include "api/units/time_delta.h"
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#include "api/units/timestamp.h"
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#include "rtc_base/synchronization/mutex.h"
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#include "rtc_base/thread_annotations.h"
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#include "rtc_base/time_utils.h"
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namespace rtc {
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// Fake clock for use with unit tests, which does not tick on its own.
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// Starts at time 0.
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//
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// TODO(deadbeef): Unify with webrtc::SimulatedClock.
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class FakeClock : public ClockInterface {
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public:
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FakeClock() = default;
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FakeClock(const FakeClock&) = delete;
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FakeClock& operator=(const FakeClock&) = delete;
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~FakeClock() override = default;
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// ClockInterface implementation.
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int64_t TimeNanos() const override;
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// Methods that can be used by the test to control the time.
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// Should only be used to set a time in the future.
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void SetTime(webrtc::Timestamp new_time);
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void AdvanceTime(webrtc::TimeDelta delta);
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private:
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mutable webrtc::Mutex lock_;
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int64_t time_ns_ RTC_GUARDED_BY(lock_) = 0;
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};
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class ThreadProcessingFakeClock : public ClockInterface {
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public:
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int64_t TimeNanos() const override { return clock_.TimeNanos(); }
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void SetTime(webrtc::Timestamp time);
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void AdvanceTime(webrtc::TimeDelta delta);
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private:
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FakeClock clock_;
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};
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// Helper class that sets itself as the global clock in its constructor and
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// unsets it in its destructor.
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class ScopedBaseFakeClock : public FakeClock {
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public:
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ScopedBaseFakeClock();
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~ScopedBaseFakeClock() override;
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private:
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ClockInterface* prev_clock_;
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};
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// TODO(srte): Rename this to reflect that it also does thread processing.
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class ScopedFakeClock : public ThreadProcessingFakeClock {
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public:
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ScopedFakeClock();
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~ScopedFakeClock() override;
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private:
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ClockInterface* prev_clock_;
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};
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} // namespace rtc
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#endif // RTC_BASE_FAKE_CLOCK_H_
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