mirror of
https://github.com/lune-org/lune.git
synced 2025-04-04 10:30:54 +01:00
46 lines
1.5 KiB
Text
46 lines
1.5 KiB
Text
-- FIXME: in windows, we need another library to get process cpu time
|
|
|
|
local ffi = require("@lune/ffi")
|
|
local process = require("@lune/process")
|
|
local isWindows = process.os == "windows"
|
|
local c = ffi.c
|
|
|
|
local procClock = {}
|
|
|
|
local lib = require("../compile")("./tests/ffi/utils/proc_clock/lib.c")
|
|
|
|
-- sizeof_clock
|
|
local sizeofClock = c.fn({}, c.int):callable(lib:find("sizeof_clock"))
|
|
function procClock.sizeofClock(): number
|
|
local result = ffi.box(c.int.size)
|
|
sizeofClock(result)
|
|
return c.int:readData(result)
|
|
end
|
|
-- get_clock
|
|
local clock_t = if isWindows then ffi.f32 else ffi["u" .. (procClock.sizeofClock() * 8)]
|
|
assert(clock_t, "clock_t is unknown type")
|
|
procClock.getClock = (
|
|
if isWindows
|
|
then function(clock: ffi.BoxData | ffi.RefData)
|
|
ffi.f32:writeData(clock, os.clock())
|
|
end
|
|
else c.fn({}, clock_t):callable(lib:find("get_clock"))
|
|
) :: (ffi.BoxData | ffi.RefData) -> ()
|
|
|
|
-- get_offset
|
|
local getOffset: (ffi.BoxData, ffi.RefData, ffi.RefData) -> () = if isWindows
|
|
then function(result: ffi.BoxData, before: ffi.RefData, after: ffi.RefData)
|
|
ffi.f64:writeData(result, (ffi.f32:readData(after) - ffi.f32:readData(before)))
|
|
end
|
|
else c.fn({ clock_t, clock_t }, ffi.f64):callable(lib:find("get_offset"))
|
|
function procClock.getOffset(before: ffi.BoxData, after: ffi.BoxData): number
|
|
local result = ffi.box(ffi.f64.size)
|
|
getOffset(result, before:ref(), after:ref())
|
|
return ffi.f64:readData(result)
|
|
end
|
|
|
|
function procClock.newBox(): (ffi.BoxData, ffi.BoxData)
|
|
return ffi.box(clock_t.size), ffi.box(clock_t.size)
|
|
end
|
|
|
|
return procClock
|