QueryPerformance.lua

local ffi = require("ffi")

ffi.cdef([[
int QueryPerformanceCounter(int64_t *lpPerformanceCount);
int QueryPerformanceFrequency(int64_t *lpFrequency);
]])

local function QueryPerformanceCounter(int64)
	int64 = int64 or ffi.new("int64_t[1]")
	ffi.C.QueryPerformanceCounter(int64)
	return tonumber(int64[0])
end

local function QueryPerformanceFrequency(int64)
	int64 = int64 or ffi.new("int64_t[1]")
	ffi.C.QueryPerformanceFrequency(int64)
	return tonumber(int64[0])
end

return {
	QueryPerformanceCounter = QueryPerformanceCounter,
	QueryPerformanceFrequency = QueryPerformanceFrequency,
}