/usr/lib/python3/dist-packages/diffoscope/profiling.py is in diffoscope 93ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 | # -*- coding: utf-8 -*-
#
# diffoscope: in-depth comparison of files, archives, and directories
#
# Copyright © 2016 Chris Lamb <lamby@debian.org>
#
# diffoscope 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.
#
# diffoscope 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 diffoscope. If not, see <https://www.gnu.org/licenses/>.
import sys
import time
import contextlib
import collections
_ENABLED = False
@contextlib.contextmanager
def profile(namespace, key):
start = time.time()
yield
if _ENABLED:
ProfileManager().increment(start, namespace, key)
class ProfileManager(object):
_singleton = {}
def __init__(self):
self.__dict__ = self._singleton
if not self._singleton:
self.data = collections.defaultdict(
lambda: collections.defaultdict(lambda: {
'time': 0.0,
'count': 0,
}),
)
def setup(self, parsed_args):
global _ENABLED
_ENABLED = parsed_args.profile_output is not None
def increment(self, start, namespace, key):
if not isinstance(key, str):
key = '{}.{}'.format(
key.__class__.__module__,
key.__class__.__name__,
)
self.data[namespace][key]['time'] += time.time() - start
self.data[namespace][key]['count'] += 1
def finish(self, parsed_args):
from .presenters.utils import make_printer
if parsed_args.profile_output is None:
return
with make_printer(parsed_args.profile_output) as fn:
self.output(fn)
def output(self, print_fn):
title = "Profiling output for: {}".format(' '.join(sys.argv))
print_fn(title)
print_fn("=" * len(title))
def key(x):
return x[1]['time']
for namespace, keys in sorted(self.data.items(), key=lambda x: x[0]):
subtitle = "{} (total time: {:.3f}s)".format(
namespace,
sum(x['time'] for x in keys.values()),
)
print_fn("\n{}\n{}\n".format(subtitle, "-" * len(subtitle)))
for value, totals in sorted(keys.items(), key=key, reverse=True):
print_fn(" {:10.3f}s {:5d} call{} {}".format(
totals['time'],
totals['count'],
' ' if totals['count'] == 1 else 's',
value,
))
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