488 lines
23 KiB
C++
488 lines
23 KiB
C++
/***
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Copyright (C) 2021 J Reece Wilson (a/k/a "Reece"). All rights reserved.
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File: AuClock.cpp
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Date: 2021-6-13
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Author: Reece
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***/
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#include <Source/RuntimeInternal.hpp>
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#include "AuClock.hpp"
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#include "Time.hpp"
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#if defined(AURORA_IS_POSIX_DERIVED)
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#include <sys/resource.h>
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#elif defined(AURORA_IS_MODERNNT_DERIVED)
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// benchmarking: https://github.com/microsoft/STL/issues/2085
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static AuUInt64 _GetSteadyTimeNS()
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{
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static const long long gFreq = _Query_perf_frequency();
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const long long uCounter = _Query_perf_counter();
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if (gFreq == 10000000)
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{
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return uCounter * 100;
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}
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else if (gFreq == 1000000)
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{
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return uCounter * 1000;
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}
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else if (gFreq == 100000)
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{
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return uCounter * 10000;
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}
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else if (gFreq == 100000000)
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{
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return uCounter * 10;
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}
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else if (gFreq == 1000000000)
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{
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return uCounter;
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}
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else
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{
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// 6 branches: the default threshold for most jit and language compiler backends to decide to pick a jump table, if the values were in a close range
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// otherwise, back to a tree of paths. either way, im sure 6 if elses are faster than grug math with large numbers, modulus, division, and multiplication
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const long long uWhole = (uCounter / gFreq) * 1'000'000'000ull;
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const long long uPart = (uCounter % gFreq) * 1'000'000'000ull / gFreq;
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return uWhole + uPart;
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}
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}
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// ~3.0741 seconds
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// using high_res_clock = std::chrono::high_resolution_clock;
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// ~6.07 seconds
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// holy fuck, we're keeping this
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// ~2x improvement
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#else
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using steady_clock = std::chrono::steady_clock;
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#endif
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using sys_clock = std::chrono::system_clock; // more stds to remove
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sys_clock::duration __NormalizeEpoch(sys_clock::duration sysEpoch);
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static AuInt64 _CurrentClock()
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{
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return __NormalizeEpoch(sys_clock::now().time_since_epoch()).count();
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}
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static AuInt64 _CurrentClockMS()
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{
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return std::chrono::duration_cast<std::chrono::milliseconds>(__NormalizeEpoch(sys_clock::now().time_since_epoch())).count();
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}
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static AuInt64 _CurrentClockNS()
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{
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return std::chrono::duration_cast<std::chrono::nanoseconds>(__NormalizeEpoch(sys_clock::now().time_since_epoch())).count();
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}
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namespace Aurora::Time
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{
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AUKN_SYM AuInt64 CurrentClock()
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{
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return _CurrentClock();
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}
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AUKN_SYM AuInt64 CurrentClockMS()
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{
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return _CurrentClockMS();
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}
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AUKN_SYM AuInt64 CurrentClockNS()
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{
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return _CurrentClockNS();
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}
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AUKN_SYM AuUInt64 SteadyClock()
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{
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#if defined(AURORA_IS_MODERNNT_DERIVED)
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return _Query_perf_counter();
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#else
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return SteadyClockNS() / (1000000000ull / SteadyClockJiffies());
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#endif
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}
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AUKN_SYM AuUInt64 SteadyClockMS()
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{
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#if defined(AURORA_IS_POSIX_DERIVED)
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::timespec spec {};
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if (::clock_gettime(CLOCK_MONOTONIC, &spec) == 0)
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{
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return AuSToMS<AuUInt64>(spec.tv_sec) + AuNSToMS<AuUInt64>(spec.tv_nsec);
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}
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else
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{
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return 0;
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}
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#elif defined(AURORA_IS_MODERNNT_DERIVED)
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return AuNSToMS<AuUInt64>(_GetSteadyTimeNS());
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#else
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return std::chrono::duration_cast<std::chrono::milliseconds>(steady_clock::now().time_since_epoch()).count();
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#endif
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}
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AUKN_SYM AuUInt64 SteadyClockNS()
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{
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#if defined(AURORA_IS_POSIX_DERIVED)
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::timespec spec {};
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if (::clock_gettime(CLOCK_MONOTONIC, &spec) == 0)
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{
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return AuMSToNS<AuUInt64>(AuSToMS<AuUInt64>(spec.tv_sec)) + (AuUInt64)spec.tv_nsec;
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}
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else
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{
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return 0;
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}
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#elif defined(AURORA_IS_MODERNNT_DERIVED)
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return _GetSteadyTimeNS();
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#else
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return std::chrono::duration_cast<std::chrono::nanoseconds>(steady_clock::now().time_since_epoch()).count();
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#endif
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}
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AUKN_SYM AuUInt64 SteadyClockJiffies()
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{
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static AuUInt64 gFrequency = 0;
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if (gFrequency != 0)
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{
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return gFrequency;
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}
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#if defined(AURORA_COMPILER_MSVC)
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return gFrequency = _Query_perf_frequency();
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#elif defined(AURORA_IS_POSIX_DERIVED)
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::timespec spec {};
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if (::clock_getres(CLOCK_MONOTONIC, &spec) == 0)
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{
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if (spec.tv_nsec && !spec.tv_sec)
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{
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return gFrequency = 1000000000ull / spec.tv_nsec;
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}
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}
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return gFrequency = (1000000000ull / 100ull);
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#else
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return gFrequency = static_cast<double>(steady_clock::period::den) / static_cast<double>(steady_clock::period::num);
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#endif
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}
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AUKN_SYM AuInt64 CTimeToMS(time_t time)
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{
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return std::chrono::duration_cast<std::chrono::milliseconds>(__NormalizeEpoch(sys_clock::from_time_t(time).time_since_epoch())).count();
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}
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#if defined(AURORA_IS_POSIX_DERIVED)
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enum class EPseudoPosixClock
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{
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eUser,
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eKernel,
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eAll
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};
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static AuUInt64 GetPOSIXTimeEx(struct rusage *usage, EPseudoPosixClock e)
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{
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struct timeval *tv {};
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switch (e)
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{
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case EPseudoPosixClock::eAll:
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{
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return GetPOSIXTimeEx(usage, EPseudoPosixClock::eKernel) +
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GetPOSIXTimeEx(usage, EPseudoPosixClock::eUser);
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}
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case EPseudoPosixClock::eUser:
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{
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tv = &usage->ru_utime;
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break;
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}
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case EPseudoPosixClock::eKernel:
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{
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tv = &usage->ru_stime;
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break;
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}
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};
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auto uMS = AuSToMS<AuUInt64>(tv->tv_sec);
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auto uNS = AuMSToNS<AuUInt64>(uMS) +
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tv->tv_usec * 1'000ull;
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return uNS;
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}
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static AuUInt64 GetPOSIXTime(bool bThread, EPseudoPosixClock e)
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{
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struct rusage usage;
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getrusage(bThread ? RUSAGE_THREAD : RUSAGE_SELF,
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&usage);
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return GetPOSIXTimeEx(&usage, e);
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}
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static AuPair<AuUInt64, AuUInt64> GetPOSIXTimePair(bool bThread)
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{
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struct rusage usage;
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getrusage(bThread ? RUSAGE_THREAD : RUSAGE_SELF,
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&usage);
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return {
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GetPOSIXTimeEx(&usage, EPseudoPosixClock::eKernel),
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GetPOSIXTimeEx(&usage, EPseudoPosixClock::eUser)
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};
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}
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#if !defined(CLOCK_THREAD_CPUTIME_ID)
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#define CLOCK_THREAD_CPUTIME_ID 0
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#endif
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#if !defined(CLOCK_PROCESS_CPUTIME_ID)
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#define CLOCK_PROCESS_CPUTIME_ID 0
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#endif
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#endif
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#if defined(AURORA_IS_MODERNNT_DERIVED)
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#define ADD_CLOCK_FAMILY(fn, type, expr, posixId, posixCall) \
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AUKN_SYM AuUInt64 fn ## ClockJiffies(); \
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\
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AUKN_SYM AuUInt64 fn ## ClockMS() \
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{ \
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return AuNSToMS<AuUInt64>(fn ## ClockNS()); \
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} \
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\
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AUKN_SYM AuUInt64 fn ## ClockNS() \
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{ \
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FILETIME creation, exit, kernel, user; \
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if (::Get ## type ## Times(GetCurrent ## type(), &creation, &exit, &kernel, &user)) \
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{ \
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ULARGE_INTEGER ullUser; \
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{ \
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ullUser.LowPart = user.dwLowDateTime; \
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ullUser.HighPart = user.dwHighDateTime; \
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} \
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\
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ULARGE_INTEGER ullKernel; \
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{ \
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ullKernel.LowPart = kernel.dwLowDateTime; \
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ullKernel.HighPart = kernel.dwHighDateTime; \
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} \
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return (expr) * 100ull; \
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} \
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return 0; \
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} \
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\
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AUKN_SYM AuUInt64 fn ## Clock() \
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{ \
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FILETIME creation, exit, kernel, user; \
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\
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if (::Get ## type ## Times(GetCurrent ## type(), &creation, &exit, &kernel, &user)) \
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{ \
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ULARGE_INTEGER ullUser; \
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{ \
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ullUser.LowPart = user.dwLowDateTime; \
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ullUser.HighPart = user.dwHighDateTime; \
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} \
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\
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ULARGE_INTEGER ullKernel; \
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{ \
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ullKernel.LowPart = kernel.dwLowDateTime; \
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ullKernel.HighPart = kernel.dwHighDateTime; \
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} \
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return expr; \
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} \
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\
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return fn ##ClockNS() / (1000000000ull / fn ## ClockJiffies()); \
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} \
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\
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AUKN_SYM AuUInt64 fn ## ClockJiffies() \
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{ \
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return 1000000000ull / 100u; \
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}
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#elif defined(AURORA_IS_POSIX_DERIVED)
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#define ADD_CLOCK_FAMILY(fn, type, expr, posixId, posixCall) \
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AUKN_SYM AuUInt64 fn ## ClockJiffies(); \
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\
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AUKN_SYM AuUInt64 fn ## ClockMS() \
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{ \
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if (!posixId) \
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{ \
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return AuNSToMS<AuUInt64>(GetPOSIXTime AU_WHAT(posixCall)); \
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} \
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return AuNSToMS<AuUInt64>(fn ## ClockNS()); \
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} \
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\
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AUKN_SYM AuUInt64 fn ## ClockNS() \
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{ \
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if (!posixId) \
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{ \
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return GetPOSIXTime AU_WHAT(posixCall); \
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} \
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::timespec spec {}; \
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if (::clock_gettime(posixId, &spec) == 0) \
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{ \
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return AuMSToNS<AuUInt64>(AuSToMS<AuUInt64>(spec.tv_sec)) + (AuUInt64)spec.tv_nsec; \
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} \
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return 0; \
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} \
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\
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AUKN_SYM AuUInt64 fn ## Clock() \
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{ \
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if (!posixId) \
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{ \
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return fn ##ClockNS() / 1000ull; \
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} \
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return fn ##ClockNS() / (1000000000ull / fn ## ClockJiffies()); \
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} \
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\
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AUKN_SYM AuUInt64 fn ## ClockJiffies() \
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{ \
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if (!posixId) \
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{ \
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return 1'000'000ull; \
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} \
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static AuUInt64 frequency = 0; \
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if (frequency != 0) \
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{ \
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return frequency; \
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} \
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\
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::timespec spec {}; \
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if (::clock_getres(posixId, &spec) == 0) \
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{ \
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if (spec.tv_nsec && !spec.tv_sec) \
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{ \
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return frequency = 1000000000ull / spec.tv_nsec; \
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} \
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else \
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{ \
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SysUnreachable(); \
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return 0; \
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} \
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} \
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\
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return 0; \
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}
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#else
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AUKN_SYM AuUInt64 fn ## ClockMS()
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{
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return 0;
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}
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AUKN_SYM AuUInt64 fn ## ClockNS()
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{
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return 0;
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}
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AUKN_SYM AuUInt64 fn ## Clock()
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{
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return 0;
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}
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AUKN_SYM AuUInt64 fn ## ClockJiffies()
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{
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return 0;
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}
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#endif
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ADD_CLOCK_FAMILY(Process, Process, (ullUser.QuadPart + ullKernel.QuadPart), /*CLOCK_PROCESS_CPUTIME_ID*/ 0, (false, EPseudoPosixClock::eAll));
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ADD_CLOCK_FAMILY(ProcessKernel, Process, (ullKernel.QuadPart), 0, (false, EPseudoPosixClock::eKernel));
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ADD_CLOCK_FAMILY(ProcessUser, Process, (ullUser.QuadPart), /*CLOCK_PROCESS_CPUTIME_ID*/0, (false, EPseudoPosixClock::eUser));
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ADD_CLOCK_FAMILY(Thread, Thread, (ullUser.QuadPart + ullKernel.QuadPart), /*CLOCK_THREAD_CPUTIME_ID*/0, (true, EPseudoPosixClock::eAll));
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ADD_CLOCK_FAMILY(ThreadKernel, Thread, (ullKernel.QuadPart), 0, (true, EPseudoPosixClock::eKernel));
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ADD_CLOCK_FAMILY(ThreadUser, Thread, (ullUser.QuadPart), /*CLOCK_THREAD_CPUTIME_ID*/0, (true, EPseudoPosixClock::eUser));
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#if defined(AURORA_IS_MODERNNT_DERIVED)
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#define ADD_CLOCK_FAMILY_PAIR(type, bIsThread, exprA, exprB) \
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\
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static AuPair<AuUInt64, AuUInt64> type ## ClockPairNS() \
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{ \
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FILETIME creation, exit, kernel, user; \
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if (::Get ## type ## Times(GetCurrent ## type(), &creation, &exit, &kernel, &user)) \
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{ \
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ULARGE_INTEGER ullUser; \
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{ \
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ullUser.LowPart = user.dwLowDateTime; \
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ullUser.HighPart = user.dwHighDateTime; \
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} \
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\
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ULARGE_INTEGER ullKernel; \
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{ \
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ullKernel.LowPart = kernel.dwLowDateTime; \
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ullKernel.HighPart = kernel.dwHighDateTime; \
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} \
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return AuMakePair((exprA) * 100ull, (exprB) * 100ull); \
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} \
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return {}; \
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} \
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#elif defined(AURORA_IS_POSIX_DERIVED)
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#define ADD_CLOCK_FAMILY_PAIR(type, bIsThread, exprA, exprB) \
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\
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static AuPair<AuUInt64, AuUInt64> type ## ClockPairNS() \
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{ \
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return GetPOSIXTimePair(bIsThread); \
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} \
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#else
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#define ADD_CLOCK_FAMILY_PAIR(type, bIsThread, exprA, exprB) \
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\
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static AuPair<AuUInt64, AuUInt64> type ## ClockPairNS() \
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{ \
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return {}; \
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} \
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#endif
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ADD_CLOCK_FAMILY_PAIR(Thread, true, (ullKernel.QuadPart),
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(ullUser.QuadPart));
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ADD_CLOCK_FAMILY_PAIR(Process, false, (ullKernel.QuadPart),
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(ullUser.QuadPart));
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AUKN_SYM AuPair<AuUInt64, AuUInt64> GetClockUserAndKernelTimeNS(EClock clock)
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{
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AuPair<AuUInt64, AuUInt64> swizzle;
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switch (clock)
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{
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case EClock::eWall:
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case EClock::eSteady:
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SysPushErrorArg("Invalid clock");
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return {};
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case EClock::eProcessTime:
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case EClock::eProcessUserTime:
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case EClock::eProcessKernelTime:
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swizzle = ProcessClockPairNS();
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break;
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case EClock::eThreadTime:
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case EClock::eThreadUserTime:
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case EClock::eThreadKernelTime:
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swizzle = ThreadClockPairNS();
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break;
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default:
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SysPushErrorArg("Invalid clock");
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return {};
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}
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return { swizzle.second, swizzle.first };
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}
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} |