-
Notifications
You must be signed in to change notification settings - Fork 290
/
measure_loc.py
219 lines (184 loc) · 7.3 KB
/
measure_loc.py
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
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
"""
Simple "active LOC" analyzer
Runs a program, and using a sampling profiler, outputs some statistics about how many
lines of code contribute to the majority of the runtime.
For example:
$ python tools/measure_loc.py minibenchmarks/fannkuch_med.py
[...]
Found 36 unique lines with 116480 samples
minibenchmarks/fannkuch_med.py:28 48244 41.4% 1 41.4%
minibenchmarks/fannkuch_med.py:36 18703 16.1% 2 57.5%
minibenchmarks/fannkuch_med.py:30 8835 7.6% 3 65.1%
minibenchmarks/fannkuch_med.py:37 6388 5.5% 4 70.5%
minibenchmarks/fannkuch_med.py:29 5348 4.6% 5 75.1%
minibenchmarks/fannkuch_med.py:27 4562 3.9% 6 79.1%
minibenchmarks/fannkuch_med.py:20 3599 3.1% 7 82.1%
minibenchmarks/fannkuch_med.py:21 2985 2.6% 8 84.7%
minibenchmarks/fannkuch_med.py:26 2984 2.6% 9 87.3%
minibenchmarks/fannkuch_med.py:23 2835 2.4% 10 89.7%
minibenchmarks/fannkuch_med.py:24 2781 2.4% 11 92.1%
minibenchmarks/fannkuch_med.py:40 2089 1.8% 12 93.9%
minibenchmarks/fannkuch_med.py:38 2038 1.7% 13 95.6%
minibenchmarks/fannkuch_med.py:35 1990 1.7% 14 97.3%
minibenchmarks/fannkuch_med.py:19 1769 1.5% 15 98.9%
minibenchmarks/fannkuch_med.py:39 1108 1.0% 16 99.8%
minibenchmarks/fannkuch_med.py:42 179 0.2% 17 100.0%
minibenchmarks/fannkuch_med.py:49 10 0.0% 18 100.0%
minibenchmarks/fannkuch_med.py:51 7 0.0% 19 100.0%
/usr/lib/python2.7/runpy.py:220 3 0.0% 20 100.0%
(and 16 more -- see measure_loc.pkl)
Picked 2 lines out of 36 to reach 57.48%
Picked 5 lines out of 36 to reach 75.14%
Picked 11 lines out of 36 to reach 92.09%
Picked 16 lines out of 36 to reach 99.81%
By default, this tool reports lines of code by the amount of time that was spent on them.
There is also a mode to change the accounting to "number of times the line executed";
use the python_trace_counter instead of python_sampler (you have to modify the script).
"""
import cPickle
import os
import runpy
import signal
import sys
import time
import traceback
class SamplingProfiler(object):
# Copied + modified from https://github.com/bdarnell/plop/blob/master/plop/collector.py
MODES = {
'prof': (signal.ITIMER_PROF, signal.SIGPROF),
'virtual': (signal.ITIMER_VIRTUAL, signal.SIGVTALRM),
'real': (signal.ITIMER_REAL, signal.SIGALRM),
}
def __init__(self, sighandler, dumper, mode, interval=0.0001):
self.sighandler = sighandler
self.dumper = dumper
self.mode = mode
self.interval = interval
def start(self):
timer, sig = SamplingProfiler.MODES[self.mode]
signal.signal(sig, signal_handler)
signal.setitimer(timer, self.interval, self.interval)
def stop(self):
timer, sig = SamplingProfiler.MODES[self.mode]
signal.setitimer(timer, 0, 0)
signal.signal(sig, signal.SIG_DFL)
return self.dumper()
# Try to prevent / notice if someone else sets a debugger.
# (Note: removing sys.settrace is not sufficient since one can set
# frame.f_trace)
sys_settrace = sys.settrace
sys.settrace = None
import bdb
bdb.Bdb.set_trace = None
bdb.set_trace = None
import pdb
pdb.set_trace = None
pdb.Pdb.set_trace = None
class TracingProfiler(object):
def __init__(self, tracefunc, dumper):
self.tracefunc = tracefunc
self.dumper = dumper
def start(self):
sys_settrace(self.tracefunc)
def stop(self):
assert sys.gettrace() == self.tracefunc, "Problem! Someone/something removed our tracer. It's now: %r" % sys.gettrace()
sys_settrace(None)
return self.dumper()
times = {}
start_time = time.time()
SKIP_WARMUP = 0
def signal_handler(sig, frame):
if time.time() >= start_time + SKIP_WARMUP:
print "Starting sampling"
def real_signal_handler(sig, frame):
loc = frame.f_code.co_filename, frame.f_lineno
times[loc] = times.get(loc, 0) + 1
signal.signal(sig, real_signal_handler)
real_signal_handler(sig, frame)
return
def trace_count(frame, event, arg):
if event == "line":
loc = frame.f_code.co_filename, frame.f_lineno
times[loc] = times.get(loc, 0) + 1
return trace_count
def get_times():
return times.items()
def run(sampler, kind):
fn = sys.argv[1]
if fn == '-m':
module = sys.argv[2]
args = sys.argv[3:]
else:
args = sys.argv[2:]
sys.argv = [sys.argv[0]] + args
sys.path[0] = os.path.abspath(os.path.dirname(fn))
sampler.start()
# del sys.modules["__main__"] # do we need this?
try:
if fn == '-m':
runpy.run_module(module, run_name="__main__")
else:
runpy.run_path(fn, run_name="__main__")
except KeyboardInterrupt:
print "Interrupted!"
traceback.print_exc()
except SystemExit:
pass
except:
print "ERROR!"
traceback.print_exc()
print "Stopping timer and tallying statistics..."
times = sampler.stop()
times.sort(key=lambda (l, t): t, reverse=True)
with open("measure_loc.pkl", "w") as f:
cPickle.dump(times, f)
total = 0.0
for l, t in times:
total += t
if kind == "time":
print "Found %d unique lines for a total of %.2fs" % (len(times), total)
else:
print "Found %d unique lines with %d samples" % (len(times), total)
FRACTIONS = [0.5, 0.75, 0.9, 0.99, 1]
frac_counts = []
frac_fracs = []
frac_idx = 0
DISPLAY_THRESH = 20
sofar = 0.0
total_lines = 0
for (l, t) in times:
if not l:
continue
fn, lineno = l
total_lines += 1
sofar += t
if total_lines <= DISPLAY_THRESH:
if kind == "time":
print ("%s:%s" % (fn, lineno)).ljust(50), "%.4fs %4.1f%% % 3d %4.1f%%" % (t, t / total * 100, total_lines, sofar / total * 100.0)
else:
print ("%s:%s" % (fn, lineno)).ljust(50), "% 3d %4.1f%% % 3d %4.1f%%" % (t, t / total * 100, total_lines, sofar / total * 100.0)
if sofar >= total * FRACTIONS[frac_idx]:
if FRACTIONS[frac_idx] == 1:
break
frac_counts.append(total_lines)
frac_fracs.append(sofar)
frac_idx += 1
if len(times) > DISPLAY_THRESH:
print "(and %d more -- see measure_loc.pkl)" % (len(times) - DISPLAY_THRESH)
assert len(frac_counts) == len(FRACTIONS) -1
for i in xrange(len(frac_counts)):
print "Picked %d lines out of %d to reach %.2f%%" % (frac_counts[i], len(times), frac_fracs[i] / total * 100.0)
python_sampler = SamplingProfiler(signal_handler, get_times, "real", interval=0.0001)
python_trace_counter = TracingProfiler(trace_count, get_times)
try:
import measure_loc_ext
cext_trace_timer = TracingProfiler(measure_loc_ext.trace, lambda: measure_loc_ext.get_times().items())
except ImportError:
print "(extension module not available)"
if __name__ == "__main__":
if sys.argv[1] == '-t':
del sys.argv[1]
run(cext_trace_timer, "time")
else:
run(python_sampler, "count")
# run(python_trace_counter, "count")