Commit 88a027e
committed
add monotonic time func for py2 (https://stackoverflow.com/a/1205762)
1 parent f6c2f52 commit 88a027e
1 file changed
Lines changed: 29 additions & 0 deletions
| Original file line number | Diff line number | Diff line change | |
|---|---|---|---|
@@ -0,0 +1,29 @@ | |||
| 1 | + # thx to https://stackoverflow.com/a/1205762 | ||
| 2 | + import ctypes | ||
| 3 | + # import os | ||
| 4 | + | ||
| 5 | + CLOCK_MONOTONIC_RAW = 4 # see <linux/time.h> | ||
| 6 | + | ||
| 7 | + | ||
| 8 | + class _Timespec(ctypes.Structure): | ||
| 9 | + _fields_ = [ | ||
| 10 | + ('tv_sec', ctypes.c_long), | ||
| 11 | + ('tv_nsec', ctypes.c_long) | ||
| 12 | + ] | ||
| 13 | + | ||
| 14 | + | ||
| 15 | + _librt = ctypes.CDLL('librt.so.1', use_errno=True) | ||
| 16 | + _clock_gettime = _librt.clock_gettime | ||
| 17 | + _clock_gettime.argtypes = [ctypes.c_int, ctypes.POINTER(_Timespec)] | ||
| 18 | + | ||
| 19 | + | ||
| 20 | + def time(): | ||
| 21 | + t = _Timespec() | ||
| 22 | + if _clock_gettime(CLOCK_MONOTONIC_RAW, ctypes.pointer(t)) != 0: | ||
| 23 | + # errno_ = ctypes.get_errno() | ||
| 24 | + # raise OSError(errno_, os.strerror(errno_)) | ||
| 25 | + return None | ||
| 26 | + return t.tv_sec + t.tv_nsec * 1e-9 | ||
| 27 | + | ||
| 28 | + | ||
| 29 | + AVAILABLE = bool(time()) | ||
0 commit comments