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: /proc/thread-self/root/snap/lxd/32662/share/openvswitch/python/ovs/ [ drwxr-xr-x ]
name : timeval.py # Copyright (c) 2009, 2010 Nicira, Inc. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at: # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import sys import time try: import ctypes LIBRT = 'librt.so.1' clock_gettime_name = 'clock_gettime' if sys.platform.startswith("linux"): CLOCK_MONOTONIC = 1 time_t = ctypes.c_long elif sys.platform.startswith("netbsd"): # NetBSD uses function renaming for ABI versioning. While the proper # way to get the appropriate version is of course "#include <time.h>", # it is difficult with ctypes. The following is appropriate for # recent versions of NetBSD, including NetBSD-6. LIBRT = 'libc.so.12' clock_gettime_name = '__clock_gettime50' CLOCK_MONOTONIC = 3 time_t = ctypes.c_int64 elif sys.platform.startswith("freebsd"): CLOCK_MONOTONIC = 4 time_t = ctypes.c_int64 else: raise Exception class timespec(ctypes.Structure): _fields_ = [ ('tv_sec', time_t), ('tv_nsec', ctypes.c_long), ] librt = ctypes.CDLL(LIBRT) clock_gettime = getattr(librt, clock_gettime_name) clock_gettime.argtypes = [ctypes.c_int, ctypes.POINTER(timespec)] except: # Librt shared library could not be loaded librt = None def monotonic(): if not librt: return time.time() t = timespec() if clock_gettime(CLOCK_MONOTONIC, ctypes.pointer(t)) == 0: return t.tv_sec + t.tv_nsec * 1e-9 # Kernel does not support CLOCK_MONOTONIC return time.time() # Use time.monotonic() if Python version >= 3.3 if not hasattr(time, 'monotonic'): time.monotonic = monotonic def msec(): """ Returns the system's monotonic time if possible, otherwise returns the current time as the amount of time since the epoch, in milliseconds, as a float.""" return time.monotonic() * 1000.0 def postfork(): # Just a stub for now pass