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Adopt JBus' GetGCTicks()

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This commit is contained in:
Jack Andersen
2017-01-07 17:08:02 -10:00
parent 5c0443d160
commit ef43c3319b
3 changed files with 49 additions and 5 deletions
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49
Runtime/CBasicsPC.cpp
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@@ -1,14 +1,42 @@
#ifndef _WIN32
#include <unistd.h>
#include <sys/time.h>
#if __APPLE__
#include <mach/mach_time.h>
#endif
#else
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
#include <windows.h>
#endif
#include <stdio.h>
#include <stdarg.h>
#include <time.h>
#include "CBasics.hpp"
#if __APPLE__
static u64 MachToDolphinNum;
static u64 MachToDolphinDenom;
#elif _WIN32
static LARGE_INTEGER PerfFrequency;
#endif
namespace urde
{
void CBasics::Init()
void CBasics::Initialize()
{
#if __APPLE__
mach_timebase_info_data_t timebase;
mach_timebase_info(&timebase);
MachToDolphinNum = GetGCTicksPerSec() * timebase.numer;
MachToDolphinDenom = 1000000000ull * timebase.denom;
#elif _WIN32
QueryPerformanceFrequency(&PerfFrequency);
#endif
}
const char* CBasics::Stringize(const char* fmt, ...)
@@ -23,9 +51,22 @@ const char* CBasics::Stringize(const char* fmt, ...)
u64 CBasics::GetGCTicks()
{
auto nanos = std::chrono::duration_cast<std::chrono::nanoseconds>(
std::chrono::steady_clock::now().time_since_epoch()).count();
return nanos * 486000000 / 1000000000;
#if __APPLE__
return mach_absolute_time() * MachToDolphinNum / MachToDolphinDenom;
#elif __linux__ || __FreeBSD__
struct timespec tp;
clock_gettime(CLOCK_MONOTONIC, &tp);
return u64((tp.tv_sec * 1000000000ull) + tp.tv_nsec) * GetGCTicksPerSec() / 1000000000ull;
#elif _WIN32
LARGE_INTEGER perf;
QueryPerformanceCounter(&perf);
perf.QuadPart *= GetGCTicksPerSec();
perf.QuadPart /= PerfFrequency.QuadPart;
return perf.QuadPart;
#else
return 0;
#endif
}
const u64 CBasics::SECONDS_TO_2000 = 946684800LL;