mirror of https://github.com/jorio/Pomme.git
42 lines
1.1 KiB
C++
42 lines
1.1 KiB
C++
#include "Pomme.h"
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#include "PommeTypes.h"
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#include <chrono>
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#include <ctime>
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using namespace std::chrono;
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// System time point on application start
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static const time_point<high_resolution_clock> gBootTimePoint = high_resolution_clock::now();
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// Timestamp of the Mac epoch (Jan 1, 1904, 00:00:00), relative to UNIX epoch (Jan 1, 1970, 00:00:00)
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static constexpr int JANUARY_1_1904 = -2'082'844'800;
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static int64_t GetMicrosecondsSinceBoot()
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{
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auto now = high_resolution_clock::now();
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microseconds usecs = duration_cast<microseconds>(now - gBootTimePoint);
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return usecs.count();
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}
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//-----------------------------------------------------------------------------
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// Time Manager
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void GetDateTime(unsigned long* secs)
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{
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*secs = (unsigned long) (std::time(nullptr) + JANUARY_1_1904);
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}
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void Microseconds(UnsignedWide* usecsOut)
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{
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auto usecs = GetMicrosecondsSinceBoot();
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usecsOut->lo = (usecs ) & 0xFFFFFFFFL;
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usecsOut->hi = (usecs >> 32) & 0xFFFFFFFFL;
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}
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UInt32 TickCount()
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{
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// A tick is approximately 1/60 of a second
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return (UInt32) (60L * GetMicrosecondsSinceBoot() / 1'000'000L);
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}
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