64 lines
1.9 KiB
Python
64 lines
1.9 KiB
Python
# SPDX-License-Identifier: GPL-2.0-or-later
|
|
|
|
from time import time
|
|
|
|
try:
|
|
import psutil
|
|
# print('psutil available')
|
|
psutil_available = True
|
|
except ImportError:
|
|
psutil_available = False
|
|
|
|
|
|
class Stats:
|
|
def __init__(self):
|
|
self.memstats_available = False
|
|
if psutil_available:
|
|
self.process = psutil.Process()
|
|
self.memstats_available = True
|
|
self.reset()
|
|
|
|
def reset(self):
|
|
self.lasttime = self._gettime()
|
|
self.lastmem = self._getmem()
|
|
self.basemem = self.lastmem
|
|
self.maxmem = 0
|
|
self.elapsedtime = 0
|
|
|
|
def _gettime(self):
|
|
"""return the time in seconds used by the current process."""
|
|
if psutil_available:
|
|
""" Handle psutil API change. """
|
|
if hasattr(self.process, "get_cpu_times"):
|
|
m = self.process.get_cpu_times()
|
|
else:
|
|
m = self.process.cpu_times()
|
|
return m.user + m.system
|
|
return time()
|
|
|
|
def _getmem(self):
|
|
"""return the resident set size in bytes used by the current process."""
|
|
if psutil_available:
|
|
""" Handle psutil API change. """
|
|
if hasattr(self.process, "get_memory_info"):
|
|
m = self.process.get_memory_info()
|
|
else:
|
|
m = self.process.memory_info()
|
|
return m.rss
|
|
return 0
|
|
|
|
def time(self):
|
|
"""return the time since the last call in seconds used by the current process."""
|
|
old = self.lasttime
|
|
self.lasttime = self._gettime()
|
|
self.elapsedtime = self.lasttime - old
|
|
return self.elapsedtime
|
|
|
|
def memory(self):
|
|
"""return the maximum resident set size since the first call in bytes used by the current process."""
|
|
self.lastmem = self._getmem()
|
|
d = self.lastmem - self.basemem
|
|
if d > self.maxmem:
|
|
self.maxmem = d
|
|
return self.maxmem
|