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
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
# Copyright (C) 2005, 2006 Canonical Ltd
#
# 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
"""Tests for profiling data collection."""
import cPickle
import os
import threading
import bzrlib
from bzrlib import errors, tests
class _LSProfFeature(tests.Feature):
def available(self):
try:
from bzrlib import lsprof
except ImportError:
return False
else:
return True
LSProfFeature = _LSProfFeature()
_TXT_HEADER = " CallCount Recursive Total(ms) " + \
"Inline(ms) module:lineno(function)\n"
def _junk_callable():
"A simple routine to profile."
result = sorted(['abc', 'def', 'ghi'])
def _collect_stats():
"Collect and return some dummy profile data."
from bzrlib.lsprof import profile
ret, stats = profile(_junk_callable)
return stats
class TestStatsSave(tests.TestCaseInTempDir):
_test_needs_features = [LSProfFeature]
def setUp(self):
super(tests.TestCaseInTempDir, self).setUp()
self.stats = _collect_stats()
def _tempfile(self, ext):
dir = self.test_dir
return bzrlib.osutils.pathjoin(dir, "tmp_profile_data." + ext)
def test_stats_save_to_txt(self):
f = self._tempfile("txt")
self.stats.save(f)
lines = open(f).readlines()
self.assertEqual(lines[0], _TXT_HEADER)
def test_stats_save_to_callgrind(self):
f = self._tempfile("callgrind")
self.stats.save(f)
lines = open(f).readlines()
self.assertEqual(lines[0], "events: Ticks\n")
f = bzrlib.osutils.pathjoin(self.test_dir, "callgrind.out.foo")
self.stats.save(f)
lines = open(f).readlines()
self.assertEqual(lines[0], "events: Ticks\n")
# Test explicit format nommination
f2 = self._tempfile("txt")
self.stats.save(f2, format="callgrind")
lines2 = open(f2).readlines()
self.assertEqual(lines2[0], "events: Ticks\n")
def test_stats_save_to_pickle(self):
f = self._tempfile("pkl")
self.stats.save(f)
data1 = cPickle.load(open(f))
self.assertEqual(type(data1), bzrlib.lsprof.Stats)
class TestBzrProfiler(tests.TestCase):
_test_needs_features = [LSProfFeature]
def test_start_call_stuff_stop(self):
profiler = bzrlib.lsprof.BzrProfiler()
profiler.start()
try:
def a_function():
pass
a_function()
finally:
stats = profiler.stop()
stats.freeze()
lines = [str(data) for data in stats.data]
lines = [line for line in lines if 'a_function' in line]
self.assertLength(1, lines)
def test_block_0(self):
# When profiler_block is 0, reentrant profile requests fail.
self.overrideAttr(bzrlib.lsprof.BzrProfiler, 'profiler_block', 0)
inner_calls = []
def inner():
profiler = bzrlib.lsprof.BzrProfiler()
self.assertRaises(errors.BzrError, profiler.start)
inner_calls.append(True)
bzrlib.lsprof.profile(inner)
self.assertLength(1, inner_calls)
def test_block_1(self):
# When profiler_block is 1, concurrent profiles serialise.
# This is tested by manually acquiring the profiler lock, then
# starting a thread that tries to profile, and releasing the lock.
# We know due to test_block_0 that two profiles at once hit the lock,
# so while this isn't perfect (we'd want a callback on the lock being
# entered to allow lockstep evaluation of the actions), its good enough
# to be confident regressions would be caught. Alternatively, if this
# is flakey, a fake Lock object can be used to trace the calls made.
calls = []
def profiled():
calls.append('profiled')
def do_profile():
bzrlib.lsprof.profile(profiled)
calls.append('after_profiled')
thread = threading.Thread(target=do_profile)
bzrlib.lsprof.BzrProfiler.profiler_lock.acquire()
try:
try:
thread.start()
finally:
bzrlib.lsprof.BzrProfiler.profiler_lock.release()
finally:
thread.join()
self.assertLength(2, calls)
|