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
|
# -*- coding: utf-8 -*-
#
# AWL simulator - Profiler support
#
# Copyright 2012-2019 Michael Buesch <m@bues.ch>
#
# 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 2 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, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
from __future__ import division, absolute_import, print_function, unicode_literals
#from awlsim.common.cython_support cimport * #@cy
from awlsim.common.compat import *
from awlsim.common.exceptions import *
from awlsim.common.util import *
__all__ = [
"Profiler",
]
class Profiler(object):
__slots__ = (
"__profileModule",
"__pstatsModule",
"__profiler",
"__enableCount",
)
def __init__(self):
try:
import cProfile as profileModule
except ImportError:
profileModule = None
self.__profileModule = profileModule
try:
import pstats as pstatsModule
except ImportError:
pstatsModule = None
self.__pstatsModule = pstatsModule
if not self.__profileModule or\
not self.__pstatsModule:
raise AwlSimError("Failed to load cProfile/pstats modules. "
"Cannot enable profiling.")
self.__profiler = self.__profileModule.Profile()
self.__enableCount = 0
def start(self):
if self.__enableCount <= 0:
self.__profiler.enable()
self.__enableCount += 1
def stop(self):
self.__enableCount = max(self.__enableCount - 1, 0)
if self.__enableCount <= 0:
self.__profiler.disable()
def getResult(self):
sio = StringIO()
ps = self.__pstatsModule.Stats(self.__profiler,
stream=sio)
ps.sort_stats("time")
ps.print_stats()
return sio.getvalue()
|
