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from __future__ import absolute_import, print_function
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import _lsprof
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import sys
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from .pycompat import getattr
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from . import pycompat
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Profiler = _lsprof.Profiler
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# PyPy doesn't expose profiler_entry from the module.
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profiler_entry = getattr(_lsprof, 'profiler_entry', None)
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__all__ = [b'profile', b'Stats']
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def profile(f, *args, **kwds):
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"""XXX docstring"""
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p = Profiler()
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p.enable(subcalls=True, builtins=True)
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try:
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f(*args, **kwds)
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finally:
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p.disable()
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return Stats(p.getstats())
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class Stats(object):
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"""XXX docstring"""
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def __init__(self, data):
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self.data = data
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def sort(self, crit="inlinetime"):
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"""XXX docstring"""
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# profiler_entries isn't defined when running under PyPy.
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if profiler_entry:
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if crit not in profiler_entry.__dict__:
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raise ValueError(b"Can't sort by %s" % crit)
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elif self.data and not getattr(self.data[0], crit, None):
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raise ValueError(b"Can't sort by %s" % crit)
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self.data.sort(key=lambda x: getattr(x, crit), reverse=True)
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for e in self.data:
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if e.calls:
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e.calls.sort(key=lambda x: getattr(x, crit), reverse=True)
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def pprint(self, top=None, file=None, limit=None, climit=None):
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"""XXX docstring"""
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if file is None:
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file = sys.stdout
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d = self.data
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if top is not None:
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d = d[:top]
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cols = b"% 12d %12d %11.4f %11.4f %s\n"
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hcols = b"% 12s %12s %12s %12s %s\n"
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file.write(
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hcols
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% (
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b"CallCount",
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b"Recursive",
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b"Total(s)",
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b"Inline(s)",
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b"module:lineno(function)",
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)
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)
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count = 0
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for e in d:
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file.write(
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cols
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% (
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e.callcount,
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e.reccallcount,
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e.totaltime,
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e.inlinetime,
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label(e.code),
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)
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)
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count += 1
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if limit is not None and count == limit:
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return
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ccount = 0
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if climit and e.calls:
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for se in e.calls:
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file.write(
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cols
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% (
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se.callcount,
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se.reccallcount,
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se.totaltime,
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se.inlinetime,
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b" %s" % label(se.code),
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)
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)
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count += 1
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ccount += 1
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if limit is not None and count == limit:
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return
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if climit is not None and ccount == climit:
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break
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def freeze(self):
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"""Replace all references to code objects with string
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descriptions; this makes it possible to pickle the instance."""
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# this code is probably rather ickier than it needs to be!
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for i in range(len(self.data)):
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e = self.data[i]
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if not isinstance(e.code, str):
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self.data[i] = type(e)((label(e.code),) + e[1:])
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if e.calls:
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for j in range(len(e.calls)):
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se = e.calls[j]
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if not isinstance(se.code, str):
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e.calls[j] = type(se)((label(se.code),) + se[1:])
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_fn2mod = {}
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def label(code):
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if isinstance(code, str):
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if sys.version_info.major >= 3:
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code = code.encode('latin-1')
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return code
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try:
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mname = _fn2mod[code.co_filename]
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except KeyError:
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for k, v in list(pycompat.iteritems(sys.modules)):
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if v is None:
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continue
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if not isinstance(getattr(v, '__file__', None), str):
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continue
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if v.__file__.startswith(code.co_filename):
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mname = _fn2mod[code.co_filename] = k
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break
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else:
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mname = _fn2mod[code.co_filename] = '<%s>' % code.co_filename
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res = '%s:%d(%s)' % (mname, code.co_firstlineno, code.co_name)
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if sys.version_info.major >= 3:
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res = res.encode('latin-1')
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return res
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