75 lines
1.8 KiB
Python
75 lines
1.8 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
|
|
# 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; version 2 of the License.
|
|
#
|
|
# 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 Library 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 <https://gnu.org/licenses/>.
|
|
|
|
|
|
"""
|
|
Simple profiler that collects time spent in functions
|
|
or code blocks and also call counts.
|
|
|
|
|
|
Usage
|
|
=====
|
|
|
|
@Profiler("label1")
|
|
def func():
|
|
...
|
|
|
|
or
|
|
|
|
with Profiler("label2"):
|
|
...
|
|
|
|
|
|
To print profiling data, run:
|
|
Profiler.print_results()
|
|
"""
|
|
|
|
from __future__ import print_function
|
|
|
|
|
|
import functools
|
|
import time
|
|
|
|
|
|
class Profiler(object):
|
|
_data = {}
|
|
|
|
def __init__(self, name):
|
|
self.name = name
|
|
self._data.setdefault(name, {"time": 0, "calls": 0})
|
|
|
|
def __enter__(self):
|
|
self.start = time.time()
|
|
|
|
def __exit__(self, ty, val, tb):
|
|
delta = time.time() - self.start
|
|
self._data[self.name]["time"] += delta
|
|
self._data[self.name]["calls"] += 1
|
|
|
|
def __call__(self, func):
|
|
@functools.wraps(func)
|
|
def decorated(*args, **kwargs):
|
|
with self:
|
|
return func(*args, **kwargs)
|
|
return decorated
|
|
|
|
@classmethod
|
|
def print_results(cls):
|
|
print("Profiling results:")
|
|
results = cls._data.items()
|
|
results.sort(lambda x, y: cmp(x[1]["time"], y[1]["time"]), reverse=True)
|
|
for name, data in results:
|
|
print(" %6.2f %5d %s" % (data["time"], data["calls"], name))
|