146 lines
4.4 KiB
Python
146 lines
4.4 KiB
Python
# Copyright (C) 2013-2015 Free Software Foundation, Inc.
|
|
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
import time
|
|
import os
|
|
import gc
|
|
|
|
class Measure(object):
|
|
"""A class that measure and collect the interesting data for a given testcase.
|
|
|
|
An instance of Measure has a collection of measurements, and each
|
|
of them is to measure a given aspect, such as time and memory.
|
|
"""
|
|
|
|
def __init__(self, measurements):
|
|
"""Constructor of measure.
|
|
|
|
measurements is a collection of Measurement objects.
|
|
"""
|
|
|
|
self.measurements = measurements
|
|
|
|
def measure(self, func, id):
|
|
"""Measure the operations done by func with a collection of measurements."""
|
|
# Enable GC, force GC and disable GC before running test in order to reduce
|
|
# the interference from GC.
|
|
gc.enable()
|
|
gc.collect()
|
|
gc.disable()
|
|
|
|
for m in self.measurements:
|
|
m.start(id)
|
|
|
|
func()
|
|
|
|
for m in self.measurements:
|
|
m.stop(id)
|
|
|
|
gc.enable()
|
|
|
|
def report(self, reporter, name):
|
|
"""Report the measured results."""
|
|
for m in self.measurements:
|
|
m.report(reporter, name)
|
|
|
|
class Measurement(object):
|
|
"""A measurement for a certain aspect."""
|
|
|
|
def __init__(self, name, result):
|
|
"""Constructor of Measurement.
|
|
|
|
Attribute result is the TestResult associated with measurement.
|
|
"""
|
|
self.name = name;
|
|
self.result = result
|
|
|
|
def start(self, id):
|
|
"""Abstract method to start the measurement."""
|
|
raise NotImplementedError("Abstract Method:start")
|
|
|
|
def stop(self, id):
|
|
"""Abstract method to stop the measurement.
|
|
|
|
When the measurement is stopped, we've got something, and
|
|
record them in result.
|
|
"""
|
|
raise NotImplementedError("Abstract Method:stop.")
|
|
|
|
def report(self, reporter, name):
|
|
"""Report the measured data by argument reporter."""
|
|
self.result.report(reporter, name + " " + self.name)
|
|
|
|
class MeasurementCpuTime(Measurement):
|
|
"""Measurement on CPU time."""
|
|
# On UNIX, time.clock() measures the amount of CPU time that has
|
|
# been used by the current process. On Windows it will measure
|
|
# wall-clock seconds elapsed since the first call to the function.
|
|
# Something other than time.clock() should be used to measure CPU
|
|
# time on Windows.
|
|
|
|
def __init__(self, result):
|
|
super(MeasurementCpuTime, self).__init__("cpu_time", result)
|
|
self.start_time = 0
|
|
|
|
def start(self, id):
|
|
self.start_time = time.clock()
|
|
|
|
def stop(self, id):
|
|
if os.name == 'nt':
|
|
cpu_time = 0
|
|
else:
|
|
cpu_time = time.clock() - self.start_time
|
|
self.result.record (id, cpu_time)
|
|
|
|
class MeasurementWallTime(Measurement):
|
|
"""Measurement on Wall time."""
|
|
|
|
def __init__(self, result):
|
|
super(MeasurementWallTime, self).__init__("wall_time", result)
|
|
self.start_time = 0
|
|
|
|
def start(self, id):
|
|
self.start_time = time.time()
|
|
|
|
def stop(self, id):
|
|
wall_time = time.time() - self.start_time
|
|
self.result.record (id, wall_time)
|
|
|
|
class MeasurementVmSize(Measurement):
|
|
"""Measurement on memory usage represented by VmSize."""
|
|
|
|
def __init__(self, result):
|
|
super(MeasurementVmSize, self).__init__("vmsize", result)
|
|
|
|
def _compute_process_memory_usage(self, key):
|
|
file_path = "/proc/%d/status" % os.getpid()
|
|
try:
|
|
t = open(file_path)
|
|
v = t.read()
|
|
t.close()
|
|
except:
|
|
return 0
|
|
i = v.index(key)
|
|
v = v[i:].split(None, 3)
|
|
if len(v) < 3:
|
|
return 0
|
|
return int(v[1])
|
|
|
|
def start(self, id):
|
|
pass
|
|
|
|
def stop(self, id):
|
|
memory_used = self._compute_process_memory_usage("VmSize:")
|
|
self.result.record (id, memory_used)
|