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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /mozglue/misc/AwakeTimeStamp.h | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | mozglue/misc/AwakeTimeStamp.h | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/mozglue/misc/AwakeTimeStamp.h b/mozglue/misc/AwakeTimeStamp.h new file mode 100644 index 0000000000..b95ef9e77e --- /dev/null +++ b/mozglue/misc/AwakeTimeStamp.h @@ -0,0 +1,118 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef mozilla_AwakeTimeStamp_h +#define mozilla_AwakeTimeStamp_h + +#include <stdint.h> +#include <mozilla/Types.h> +#include "mozilla/Assertions.h" + +namespace mozilla { + +class AwakeTimeDuration; + +// Conceptually like mozilla::TimeStamp, but only increments when the device is +// awake, on all platforms, and with a restricted API. +// +// It is always valid, there is no way to acquire an AwakeTimeStamp that is not +// valid, unlike TimeStamp that can be null. +// +// Some arithmetic and ordering operations are supported, when they make sense. +// +// This timestamp shouldn't be considered to be high-resolution, and is suitable +// to measure time from a hundred of milliseconds (because of Windows +// limitations). +class AwakeTimeStamp { + public: + MFBT_API static AwakeTimeStamp NowLoRes(); + MFBT_API void operator+=(const AwakeTimeDuration& aOther); + MFBT_API void operator-=(const AwakeTimeDuration& aOther); + MFBT_API bool operator<(const AwakeTimeStamp& aOther) const { + return mValueUs < aOther.mValueUs; + } + MFBT_API bool operator<=(const AwakeTimeStamp& aOther) const { + return mValueUs <= aOther.mValueUs; + } + MFBT_API bool operator>=(const AwakeTimeStamp& aOther) const { + return mValueUs >= aOther.mValueUs; + } + MFBT_API bool operator>(const AwakeTimeStamp& aOther) const { + return mValueUs > aOther.mValueUs; + } + MFBT_API bool operator==(const AwakeTimeStamp& aOther) const { + return mValueUs == aOther.mValueUs; + } + MFBT_API bool operator!=(const AwakeTimeStamp& aOther) const { + return !(*this == aOther); + } + MFBT_API AwakeTimeDuration operator-(AwakeTimeStamp const& aOther) const; + MFBT_API AwakeTimeStamp operator+(const AwakeTimeDuration& aDuration) const; + + private: + explicit AwakeTimeStamp(uint64_t aValueUs) : mValueUs(aValueUs) {} + + uint64_t mValueUs; +}; + +// A duration, only counting the time the computer was awake. +// +// Can be obtained via subtracting two AwakeTimeStamp, or default-contructed to +// mean a empty duration. +// +// Arithmetic and ordering operations are defined when they make sense. +class AwakeTimeDuration { + public: + MFBT_API AwakeTimeDuration() : mValueUs(0) {} + + MFBT_API double ToSeconds() const; + MFBT_API double ToMilliseconds() const; + MFBT_API double ToMicroseconds() const; + MFBT_API void operator+=(const AwakeTimeDuration& aDuration) { + mValueUs += aDuration.mValueUs; + } + MFBT_API AwakeTimeDuration operator+(const AwakeTimeDuration& aOther) const { + return AwakeTimeDuration(mValueUs + aOther.mValueUs); + } + MFBT_API AwakeTimeDuration operator-(const AwakeTimeDuration& aOther) const { + MOZ_ASSERT(mValueUs >= aOther.mValueUs); + return AwakeTimeDuration(mValueUs - aOther.mValueUs); + } + MFBT_API void operator-=(const AwakeTimeDuration& aOther) { + MOZ_ASSERT(mValueUs >= aOther.mValueUs); + mValueUs -= aOther.mValueUs; + } + MFBT_API bool operator<(const AwakeTimeDuration& aOther) const { + return mValueUs < aOther.mValueUs; + } + MFBT_API bool operator<=(const AwakeTimeDuration& aOther) const { + return mValueUs <= aOther.mValueUs; + } + MFBT_API bool operator>=(const AwakeTimeDuration& aOther) const { + return mValueUs >= aOther.mValueUs; + } + MFBT_API bool operator>(const AwakeTimeDuration& aOther) const { + return mValueUs > aOther.mValueUs; + } + MFBT_API bool operator==(const AwakeTimeDuration& aOther) const { + return mValueUs == aOther.mValueUs; + } + MFBT_API bool operator!=(const AwakeTimeDuration& aOther) const { + return !(*this == aOther); + } + + private: + friend AwakeTimeStamp; + // Not using a default value because we want this private, but allow creating + // duration that are empty. + explicit AwakeTimeDuration(uint64_t aValueUs) : mValueUs(aValueUs) {} + + uint64_t mValueUs; +}; + +}; // namespace mozilla + +#endif // mozilla_AwakeTimeStamp_h |