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class AppTestCProfile(object):
spaceconfig = {
"usemodules": ['_lsprof', 'time'],
}
def setup_class(cls):
cls.w_expected_output = cls.space.wrap(expected_output)
cls.w_file = cls.space.wrap(__file__)
def test_repr(self):
import _lsprof
assert repr(_lsprof.Profiler) == "<class '_lsprof.Profiler'>"
def test_builtins(self):
import _lsprof
prof = _lsprof.Profiler()
lst = []
prof.enable()
lst.append(len(lst))
prof.disable()
stats = prof.getstats()
expected = (
"<built-in function len>",
"<method 'append' of 'list' objects>",
"<method 'disable' of '_lsprof.Profiler' objects>",
)
for entry in stats:
assert entry.code in expected
def test_builtins_callers(self):
import _lsprof
prof = _lsprof.Profiler(subcalls=True)
lst = []
def f1():
lst.append(len(lst))
prof.enable(subcalls=True)
f1()
prof.disable()
stats = prof.getstats()
expected = (
"<built-in function len>",
"<method 'append' of 'list' objects>",
)
by_id = set()
for entry in stats:
if entry.code == f1.__code__:
assert len(entry.calls) == 2
for subentry in entry.calls:
assert subentry.code in expected
by_id.add(id(subentry.code))
elif entry.code in expected:
by_id.add(id(entry.code))
# :-( cProfile.py relies on the id() of the strings...
assert len(by_id) == len(expected)
def test_direct(self):
import _lsprof
def getticks():
return len(ticks)
prof = _lsprof.Profiler(getticks, 0.25, True, False)
ticks = []
def bar(m):
ticks.append(1)
if m == 1:
foo(42)
ticks.append(1)
def spam(m):
bar(m)
def foo(n):
bar(n)
ticks.append(1)
bar(n+1)
ticks.append(1)
spam(n+2)
prof.enable()
foo(0)
prof.disable()
assert len(ticks) == 16
stats = prof.getstats()
entries = {}
for entry in stats:
assert hasattr(entry.code, 'co_name')
entries[entry.code.co_name] = entry
efoo = entries['foo']
assert efoo.callcount == 2
assert efoo.reccallcount == 1
assert efoo.inlinetime == 1.0
assert efoo.totaltime == 4.0
assert len(efoo.calls) == 2
ebar = entries['bar']
assert ebar.callcount == 6
assert ebar.reccallcount == 3
assert ebar.inlinetime == 3.0
assert ebar.totaltime == 3.5
assert len(ebar.calls) == 1
espam = entries['spam']
assert espam.callcount == 2
assert espam.reccallcount == 0
assert espam.inlinetime == 0.0
assert espam.totaltime == 1.0
assert len(espam.calls) == 1
foo2spam, foo2bar = efoo.calls
if foo2bar.code.co_name == 'spam':
foo2bar, foo2spam = foo2spam, foo2bar
assert foo2bar.code.co_name == 'bar'
assert foo2bar.callcount == 4
assert foo2bar.reccallcount == 2
assert foo2bar.inlinetime == 2.0
assert foo2bar.totaltime == 3.0
assert foo2spam.code.co_name == 'spam'
assert foo2spam.callcount == 2
assert foo2spam.reccallcount == 0
assert foo2spam.inlinetime == 0.0
assert foo2spam.totaltime == 1.0
bar2foo, = ebar.calls
assert bar2foo.code.co_name == 'foo'
assert bar2foo.callcount == 1
assert bar2foo.reccallcount == 0
assert bar2foo.inlinetime == 0.5
assert bar2foo.totaltime == 2.0
spam2bar, = espam.calls
assert spam2bar.code.co_name == 'bar'
assert spam2bar.callcount == 2
assert spam2bar.reccallcount == 0
assert spam2bar.inlinetime == 1.0
assert spam2bar.totaltime == 1.0
def test_scale_of_result(self):
import _lsprof, time
prof = _lsprof.Profiler()
def foo(n):
t = time.time()
while abs(t - time.time()) < 1.0:
pass # busy-wait for 1 second
def bar(n):
foo(n)
prof.enable()
bar(0)
prof.disable()
stats = prof.getstats()
entries = {}
for entry in stats:
entries[entry.code] = entry
efoo = entries[foo.__code__]
ebar = entries[bar.__code__]
assert 0.9 < efoo.totaltime < 2.9
# --- cannot test .inlinetime, because it does not include
# --- the time spent doing the call to time.time()
#assert 0.9 < efoo.inlinetime < 2.9
for subentry in ebar.calls:
assert 0.9 < subentry.totaltime < 2.9
#assert 0.9 < subentry.inlinetime < 2.9
def test_builtin_exception(self):
import math
import _lsprof
prof = _lsprof.Profiler()
prof.enable()
try:
math.sqrt("a")
except TypeError:
pass
prof.disable()
stats = prof.getstats()
assert len(stats) == 2
def test_use_cprofile(self):
import sys, os
# XXX this is evil trickery to walk around the fact that we don't
# have __file__ at app-level here
sys.path.insert(0, os.path.dirname(self.file))
try:
import re
from cProfile import Profile
from profilee import testfunc, timer
methodnames = ['print_stats', 'print_callers', 'print_callees']
def do_profiling(cls):
results = []
prof = cls(timer, 0.001)
start_timer = timer()
prof.runctx("testfunc()", {'testfunc':testfunc}, locals())
results.append(timer() - start_timer)
for methodname in methodnames:
import pstats
from io import StringIO
s = StringIO()
stats = pstats.Stats(prof, stream=s)
stats.strip_dirs().sort_stats("stdname")
getattr(stats, methodname)()
results.append(s.getvalue())
return results, prof
res, prof = do_profiling(Profile)
assert res[0] == 1000
for i, method in enumerate(methodnames):
got = res[i + 1]
expected = self.expected_output[method]
patterns = expected.splitlines()
lines = set(got.splitlines())
lines.remove('') # ignore blank lines
for pattern in patterns:
if not pattern:
continue # ignore blank lines
pattern = pattern.replace('(', '\\(')
pattern = pattern.replace(')', '\\)')
pattern = pattern.replace('?', '\\?')
pattern = pattern.replace(r'\\?', '?')
pattern = pattern.replace(r'\\(', '(')
pattern = pattern.replace(r'\\)', ')')
repattern = re.compile('^' + pattern + '$')
for line in lines:
if repattern.match(line):
lines.remove(line)
break
else:
print('NOT FOUND: %s' % pattern.rstrip('\n'))
print('--- GOT ---')
print(got)
print('')
print('--- EXPECTED ---')
print(expected)
assert False
assert not lines
finally:
sys.path.pop(0)
expected_output = {}
expected_output['print_stats'] = """\
119 function calls (99 primitive calls) in 1.000 seconds
Ordered by: standard name
ncalls tottime percall cumtime percall filename:lineno(function)
1 0.000 0.000 1.000 1.000 <string>:1(<module>)
28 0.028 0.001 0.028 0.001 profilee.py:110(__getattr__)
1 0.270 0.270 1.000 1.000 profilee.py:25(testfunc)
23/3 0.150 0.007 0.170 0.057 profilee.py:35(factorial)
20 0.020 0.001 0.020 0.001 profilee.py:48(mul)
2 0.040 0.020 0.600 0.300 profilee.py:55(helper)
4 0.116 0.029 0.120 0.030 profilee.py:73(helper1)
2 0.000 0.000 0.140 0.070 profilee.py:84(helper2_indirect)
8 0.312 0.039 0.400 0.050 profilee.py:88(helper2)
8 0.064 0.008 0.080 0.010 profilee.py:98(subhelper)
1 0.000 0.000 1.000 1.000 {built-in function exec}
12 0.000 0.000 0.012 0.001 {built-in function hasattr}
4 0.000 0.000 0.000 0.000 {built-in function sys.exc_info}
4 0.000 0.000 0.000 0.000 {method 'append' of 'list' objects}
1 0.000 0.000 0.000 0.000 {method 'disable' of '_lsprof.Profiler' objects}
"""
expected_output['print_callers'] = """\
Ordered by: standard name
Function was called by...
ncalls tottime cumtime
<string>:1(<module>) <- 1 0.000 1.000 {built-in function exec}
profilee.py:110(__getattr__) <- 16 0.016 0.016 profilee.py:98(subhelper)
12 0.012 0.012 {built-in function hasattr}
profilee.py:25(testfunc) <- 1 0.270 1.000 <string>:1(<module>)
profilee.py:35(factorial) <- 1 0.014 0.130 profilee.py:25(testfunc)
20/3 0.130 0.147 profilee.py:35(factorial)
2 0.006 0.040 profilee.py:84(helper2_indirect)
profilee.py:48(mul) <- 20 0.020 0.020 profilee.py:35(factorial)
profilee.py:55(helper) <- 2 0.040 0.600 profilee.py:25(testfunc)
profilee.py:73(helper1) <- 4 0.116 0.120 profilee.py:55(helper)
profilee.py:84(helper2_indirect) <- 2 0.000 0.140 profilee.py:55(helper)
profilee.py:88(helper2) <- 6 0.234 0.300 profilee.py:55(helper)
2 0.078 0.100 profilee.py:84(helper2_indirect)
profilee.py:98(subhelper) <- 8 0.064 0.080 profilee.py:88(helper2)
{built-in function exec} <-
{built-in function hasattr} <- 4 0.000 0.004 profilee.py:73(helper1)
8 0.000 0.008 profilee.py:88(helper2)
{method 'append' of 'list' objects} <- 4 0.000 0.000 profilee.py:73(helper1)
{method 'disable' of '_lsprof.Profiler' objects} <-
{built-in function sys.exc_info} <- 4 0.000 0.000 profilee.py:73(helper1)
"""
expected_output['print_callees'] = """\
Ordered by: standard name
Function called...
ncalls tottime cumtime
<string>:1(<module>) -> 1 0.270 1.000 profilee.py:25(testfunc)
profilee.py:110(__getattr__) ->
profilee.py:25(testfunc) -> 1 0.014 0.130 profilee.py:35(factorial)
2 0.040 0.600 profilee.py:55(helper)
profilee.py:35(factorial) -> 20/3 0.130 0.147 profilee.py:35(factorial)
20 0.020 0.020 profilee.py:48(mul)
profilee.py:48(mul) ->
profilee.py:55(helper) -> 4 0.116 0.120 profilee.py:73(helper1)
2 0.000 0.140 profilee.py:84(helper2_indirect)
6 0.234 0.300 profilee.py:88(helper2)
profilee.py:73(helper1) -> 4 0.000 0.004 {built-in function hasattr}
4 0.000 0.000 {method 'append' of 'list' objects}
4 0.000 0.000 {built-in function sys.exc_info}
profilee.py:84(helper2_indirect) -> 2 0.006 0.040 profilee.py:35(factorial)
2 0.078 0.100 profilee.py:88(helper2)
profilee.py:88(helper2) -> 8 0.064 0.080 profilee.py:98(subhelper)
8 0.000 0.008 {built-in function hasattr}
profilee.py:98(subhelper) -> 16 0.016 0.016 profilee.py:110(__getattr__)
{built-in function exec} -> 1 0.000 1.000 <string>:1(<module>)
{built-in function hasattr} -> 12 0.012 0.012 profilee.py:110(__getattr__)
{method 'append' of 'list' objects} ->
{method 'disable' of '_lsprof.Profiler' objects} ->
{built-in function sys.exc_info} ->
"""
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