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# 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
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