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How to use GetProcessTimes method in pytest-benchmark

Best Python code snippet using pytest-benchmark

systimes.py

Source:systimes.py

...35#   values, ie. systimesres().36#37### Choose an implementation38SYSTIMES_IMPLEMENTATION = None39USE_CTYPES_GETPROCESSTIMES = 'ctypes GetProcessTimes() wrapper'40USE_WIN32PROCESS_GETPROCESSTIMES = 'win32process.GetProcessTimes()'41USE_RESOURCE_GETRUSAGE = 'resource.getrusage()'42USE_PROCESS_TIME_CLOCK = 'time.clock() (process time)'43USE_WALL_TIME_CLOCK = 'time.clock() (wall-clock)'44USE_WALL_TIME_TIME = 'time.time() (wall-clock)'45if sys.platform[:3] == 'win':46    # Windows platform47    try:48        import win32process49    except ImportError:50        try:51            import ctypes52        except ImportError:53            # Use the wall-clock implementation time.clock(), since this54            # is the highest resolution clock available on Windows55            SYSTIMES_IMPLEMENTATION = USE_WALL_TIME_CLOCK56        else:57            SYSTIMES_IMPLEMENTATION = USE_CTYPES_GETPROCESSTIMES58    else:59        SYSTIMES_IMPLEMENTATION = USE_WIN32PROCESS_GETPROCESSTIMES60else:61    # All other platforms62    try:63        import resource64    except ImportError:65        pass66    else:67        SYSTIMES_IMPLEMENTATION = USE_RESOURCE_GETRUSAGE68# Fall-back solution69if SYSTIMES_IMPLEMENTATION is None:70    # Check whether we can use time.clock() as approximation71    # for systimes()72    start = time.clock()73    time.sleep(0.1)74    stop = time.clock()75    if stop - start < 0.001:76        # Looks like time.clock() is usable (and measures process77        # time)78        SYSTIMES_IMPLEMENTATION = USE_PROCESS_TIME_CLOCK79    else:80        # Use wall-clock implementation time.time() since this provides81        # the highest resolution clock on most systems82        SYSTIMES_IMPLEMENTATION = USE_WALL_TIME_TIME83### Implementations84def getrusage_systimes():85    return resource.getrusage(resource.RUSAGE_SELF)[:2]86def process_time_clock_systimes():87    return (time.clock(), 0.0)88def wall_clock_clock_systimes():89    return (time.clock(), 0.0)90def wall_clock_time_systimes():91    return (time.time(), 0.0)92# Number of clock ticks per second for the values returned93# by GetProcessTimes() on Windows.94#95# Note: Ticks returned by GetProcessTimes() are 100ns intervals on96# Windows XP. However, the process times are only updated with every97# clock tick and the frequency of these is somewhat lower: depending98# on the OS version between 10ms and 15ms. Even worse, the process99# time seems to be allocated to process currently running when the100# clock interrupt arrives, ie. it is possible that the current time101# slice gets accounted to a different process.102WIN32_PROCESS_TIMES_TICKS_PER_SECOND = 1e7103def win32process_getprocesstimes_systimes():104    d = win32process.GetProcessTimes(win32process.GetCurrentProcess())105    return (d['UserTime'] / WIN32_PROCESS_TIMES_TICKS_PER_SECOND,106            d['KernelTime'] / WIN32_PROCESS_TIMES_TICKS_PER_SECOND)107def ctypes_getprocesstimes_systimes():108    creationtime = ctypes.c_ulonglong()109    exittime = ctypes.c_ulonglong()110    kerneltime = ctypes.c_ulonglong()111    usertime = ctypes.c_ulonglong()112    rc = ctypes.windll.kernel32.GetProcessTimes(113        ctypes.windll.kernel32.GetCurrentProcess(),114        ctypes.byref(creationtime),115        ctypes.byref(exittime),116        ctypes.byref(kerneltime),117        ctypes.byref(usertime))118    if not rc:119        raise TypeError('GetProcessTimes() returned an error')120    return (usertime.value / WIN32_PROCESS_TIMES_TICKS_PER_SECOND,121            kerneltime.value / WIN32_PROCESS_TIMES_TICKS_PER_SECOND)122# Select the default for the systimes() function123if SYSTIMES_IMPLEMENTATION is USE_RESOURCE_GETRUSAGE:124    systimes = getrusage_systimes125elif SYSTIMES_IMPLEMENTATION is USE_PROCESS_TIME_CLOCK:126    systimes = process_time_clock_systimes127elif SYSTIMES_IMPLEMENTATION is USE_WALL_TIME_CLOCK:128    systimes = wall_clock_clock_systimes129elif SYSTIMES_IMPLEMENTATION is USE_WALL_TIME_TIME:130    systimes = wall_clock_time_systimes131elif SYSTIMES_IMPLEMENTATION is USE_WIN32PROCESS_GETPROCESSTIMES:132    systimes = win32process_getprocesstimes_systimes133elif SYSTIMES_IMPLEMENTATION is USE_CTYPES_GETPROCESSTIMES:...

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