michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim:set ts=2 sw=2 sts=2 et cindent: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef mozilla_TimeStamp_windows_h
michael@0: #define mozilla_TimeStamp_windows_h
michael@0: 
michael@0: namespace mozilla {
michael@0: 
michael@0: class TimeStamp;
michael@0: 
michael@0: class TimeStampValue
michael@0: {
michael@0:   friend struct IPC::ParamTraits<mozilla::TimeStampValue>;
michael@0:   friend class TimeStamp;
michael@0:   friend void StartupTimelineRecordExternal(int, uint64_t);
michael@0: 
michael@0:   // Both QPC and GTC are kept in [mt] units.
michael@0:   uint64_t mGTC;
michael@0:   uint64_t mQPC;
michael@0:   bool mHasQPC;
michael@0:   bool mIsNull;
michael@0: 
michael@0:   TimeStampValue(uint64_t GTC, uint64_t QPC, bool hasQPC);
michael@0: 
michael@0:   uint64_t CheckQPC(const TimeStampValue &aOther) const;
michael@0: 
michael@0:   struct _SomethingVeryRandomHere;
michael@0:   MOZ_CONSTEXPR TimeStampValue(_SomethingVeryRandomHere* nullValue)
michael@0:     : mGTC(0), mQPC(0), mHasQPC(false), mIsNull(true) {}
michael@0: 
michael@0: 
michael@0: public:
michael@0:   uint64_t operator-(const TimeStampValue &aOther) const;
michael@0: 
michael@0:   TimeStampValue operator+(const int64_t aOther) const
michael@0:     { return TimeStampValue(mGTC + aOther, mQPC + aOther, mHasQPC); }
michael@0:   TimeStampValue operator-(const int64_t aOther) const
michael@0:     { return TimeStampValue(mGTC - aOther, mQPC - aOther, mHasQPC); }
michael@0:   TimeStampValue& operator+=(const int64_t aOther);
michael@0:   TimeStampValue& operator-=(const int64_t aOther);
michael@0: 
michael@0:   bool operator<(const TimeStampValue &aOther) const
michael@0:     { return int64_t(*this - aOther) < 0; }
michael@0:   bool operator>(const TimeStampValue &aOther) const
michael@0:     { return int64_t(*this - aOther) > 0; }
michael@0:   bool operator<=(const TimeStampValue &aOther) const
michael@0:     { return int64_t(*this - aOther) <= 0; }
michael@0:   bool operator>=(const TimeStampValue &aOther) const
michael@0:     { return int64_t(*this - aOther) >= 0; }
michael@0:   bool operator==(const TimeStampValue &aOther) const
michael@0:     { return int64_t(*this - aOther) == 0; }
michael@0:   bool operator!=(const TimeStampValue &aOther) const
michael@0:     { return int64_t(*this - aOther) != 0; }
michael@0: };
michael@0: 
michael@0: }
michael@0: 
michael@0: #endif /* mozilla_TimeStamp_h */