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#
# this is copied from the lsprof distro because somehow
# it is not installed by distutils
# I made one modification to profile so that it returns a pair
# instead of just the Stats object
import sys
import thread
import threading
from _lsprof import Profiler, profiler_entry
__all__ = ['profile', 'Stats']
_g_threadmap = {}
def _thread_profile(f, *args, **kwds):
# we lose the first profile point for a new thread in order to trampoline
# a new Profile object into place
global _g_threadmap
thr = thread.get_ident()
_g_threadmap[thr] = p = Profiler()
# this overrides our sys.setprofile hook:
p.enable(subcalls=True, builtins=True)
def profile(f, *args, **kwds):
"""FIXME: docstring"""
global _g_threadmap
p = Profiler()
p.enable(subcalls=True)
threading.setprofile(_thread_profile)
try:
ret = f(*args, **kwds)
finally:
p.disable()
for pp in _g_threadmap.values():
pp.disable()
threading.setprofile(None)
threads = {}
for tid, pp in _g_threadmap.items():
threads[tid] = Stats(pp.getstats(), {})
_g_threadmap = {}
return ret, Stats(p.getstats(), threads)
class Stats(object):
"""FIXME: docstring"""
def __init__(self, data, threads):
self.data = data
self.threads = threads
def sort(self, crit="inlinetime"):
"""FIXME: docstring"""
if crit not in profiler_entry.__dict__:
raise ValueError("Can't sort by %s" % crit)
self.data.sort(lambda b, a: cmp(getattr(a, crit),
getattr(b, crit)))
for e in self.data:
if e.calls:
e.calls.sort(lambda b, a: cmp(getattr(a, crit),
getattr(b, crit)))
def pprint(self, top=None, file=None):
"""FIXME: docstring"""
if file is None:
file = sys.stdout
d = self.data
if top is not None:
d = d[:top]
cols = "% 12s %12s %11.4f %11.4f %s\n"
hcols = "% 12s %12s %12s %12s %s\n"
file.write(hcols % ("CallCount", "Recursive", "Total(ms)",
"Inline(ms)", "module:lineno(function)"))
for e in d:
file.write(cols % (e.callcount, e.reccallcount, e.totaltime,
e.inlinetime, label(e.code)))
if e.calls:
for se in e.calls:
file.write(cols % ("+%s" % se.callcount, se.reccallcount,
se.totaltime, se.inlinetime,
"+%s" % label(se.code)))
def freeze(self):
"""Replace all references to code objects with string
descriptions; this makes it possible to pickle the instance."""
# this code is probably rather ickier than it needs to be!
for i in range(len(self.data)):
e = self.data[i]
if not isinstance(e.code, str):
self.data[i] = type(e)((label(e.code)) + e[1:])
if e.calls:
for j in range(len(e.calls)):
se = e.calls[j]
if not isinstance(se.code, str):
e.calls[j] = type(se)((label(se.code)) + se[1:])
for s in self.threads.values():
s.freeze()
def calltree(self, file):
"""Output profiling data in calltree format (for KCacheGrind)."""
_CallTreeFilter(self.data).output(file)
class _CallTreeFilter(object):
def __init__(self, data):
self.data = data
self.out_file = None
def output(self, out_file):
self.out_file = out_file
print >> out_file, 'events: Ticks'
self._print_summary()
for entry in self.data:
self._entry(entry)
def _print_summary(self):
max_cost = 0
for entry in self.data:
totaltime = int(entry.totaltime * 1000)
max_cost = max(max_cost, totaltime)
print >> self.out_file, 'summary: %d' % (max_cost)
def _entry(self, entry):
out_file = self.out_file
code = entry.code
inlinetime = int(entry.inlinetime * 1000)
#print >> out_file, 'ob=%s' % (code.co_filename,)
print >> out_file, 'fi=%s' % (code.co_filename)
print >> out_file, 'fn=%s' % (label(code, True))
print >> out_file, '%d %d' % (code.co_firstlineno, inlinetime)
# recursive calls are counted in entry.calls
if entry.calls:
calls = entry.calls
else:
calls = []
for subentry in calls:
self._subentry(code.co_firstlineno, subentry)
print >> out_file
def _subentry(self, lineno, subentry):
out_file = self.out_file
code = subentry.code
totaltime = int(subentry.totaltime * 1000)
#print >> out_file, 'cob=%s' % (code.co_filename,)
print >> out_file, 'cfn=%s' % (label(code, True))
print >> out_file, 'cfi=%s' % (code.co_filename)
print >> out_file, 'calls=%d %d' % (
subentry.callcount, code.co_firstlineno)
print >> out_file, '%d %d' % (lineno, totaltime)
_fn2mod = {}
def label(code, calltree=False):
if isinstance(code, str):
return code
try:
mname = _fn2mod[code.co_filename]
except KeyError:
for k, v in sys.modules.items():
if v is None:
continue
if getattr(v, '__file__', None) is None:
continue
if not isinstance(v.__file__, str):
continue
if v.__file__.startswith(code.co_filename):
mname = _fn2mod[code.co_filename] = k
break
else:
mname = _fn2mod[code.co_filename] = '<%s>'%code.co_filename
if calltree:
return '%s %s:%d' % (code.co_name, mname, code.co_firstlineno)
else:
return '%s:%d(%s)' % (mname, code.co_firstlineno, code.co_name)
if __name__ == '__main__':
import os
sys.argv = sys.argv[1:]
if not sys.argv:
print >> sys.stderr, "usage: lsprof.py <script> <arguments...>"
sys.exit(2)
sys.path.insert(0, os.path.abspath(os.path.dirname(sys.argv[0])))
stats = profile(execfile, sys.argv[0], globals(), locals())
stats.sort()
stats.pprint()
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