63 lines
1.7 KiB
C++
63 lines
1.7 KiB
C++
/***
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Copyright (C) 2023 J Reece Wilson (a/k/a "Reece"). All rights reserved.
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File: AuProcessStartTime.cpp
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Date: 2023-7-10
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Author: Reece
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***/
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#include <Source/RuntimeInternal.hpp>
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#include "AuProcessStartTime.hpp"
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#include <Time/Time.hpp>
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namespace Aurora::Process
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{
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static AuOptional<AuUInt64> gOptKnownStartupWallTime;
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static AuOptional<AuUInt64> gOptKnownStartupSteadyTime;
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void WarmStartupCaches()
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{
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#if defined(AURORA_IS_MODERNNT_DERIVED)
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FILETIME creation, exit, kernel, user;
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if (::GetProcessTimes(GetCurrentProcess(), &creation, &exit, &kernel, &user))
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{
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auto u64 = AuTime::ConvertTimestampNs(creation);
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gOptKnownStartupWallTime = u64;
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u64 += AuTime::SteadyClockNS() - AuTime::CurrentClockNS();
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gOptKnownStartupSteadyTime = u64;
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}
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#else
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auto u64 = AuTime::ThreadClockNS();
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gOptKnownStartupWallTime = AuTime::CurrentClockNS() - u64;
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gOptKnownStartupSteadyTime = AuTime::SteadyClockNS() - u64;
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#endif
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}
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AUKN_SYM AuUInt64 GetProcessStartupTimeNS()
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{
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if (gOptKnownStartupWallTime.has_value())
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{
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return gOptKnownStartupWallTime.value();
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}
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WarmStartupCaches();
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return gOptKnownStartupWallTime.value();
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}
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AUKN_SYM AuUInt64 GetProcessStartupTimeMS()
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{
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return AuNSToMS<AuUInt64>(GetProcessStartupTimeNS());
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}
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AUKN_SYM AuUInt64 GetProcessStartupSteadyTimeNS()
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{
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if (gOptKnownStartupSteadyTime.has_value())
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{
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return gOptKnownStartupSteadyTime.value();
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}
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WarmStartupCaches();
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return gOptKnownStartupSteadyTime.value();
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}
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} |