Mercurial > hg
view mercurial/lsprof.py @ 45849:731ea8fa1f11 stable
chg: show debug message for each fd to be closed
It helps debugging. The number of file descriptors should be small in most
cases, so the console output wouldn't get bloated even with CHG_DEBUG=1.
author | Yuya Nishihara <yuya@tcha.org> |
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date | Tue, 03 Nov 2020 11:12:25 +0900 |
parents | 9f70512ae2cf |
children | 6000f5b25c9b |
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from __future__ import absolute_import, print_function import _lsprof import sys from .pycompat import getattr from . import pycompat Profiler = _lsprof.Profiler # PyPy doesn't expose profiler_entry from the module. profiler_entry = getattr(_lsprof, 'profiler_entry', None) __all__ = [b'profile', b'Stats'] def profile(f, *args, **kwds): """XXX docstring""" p = Profiler() p.enable(subcalls=True, builtins=True) try: f(*args, **kwds) finally: p.disable() return Stats(p.getstats()) class Stats(object): """XXX docstring""" def __init__(self, data): self.data = data def sort(self, crit="inlinetime"): """XXX docstring""" # profiler_entries isn't defined when running under PyPy. if profiler_entry: if crit not in profiler_entry.__dict__: raise ValueError(b"Can't sort by %s" % crit) elif self.data and not getattr(self.data[0], crit, None): raise ValueError(b"Can't sort by %s" % crit) self.data.sort(key=lambda x: getattr(x, crit), reverse=True) for e in self.data: if e.calls: e.calls.sort(key=lambda x: getattr(x, crit), reverse=True) def pprint(self, top=None, file=None, limit=None, climit=None): """XXX docstring""" if file is None: file = sys.stdout d = self.data if top is not None: d = d[:top] cols = b"% 12d %12d %11.4f %11.4f %s\n" hcols = b"% 12s %12s %12s %12s %s\n" file.write( hcols % ( b"CallCount", b"Recursive", b"Total(s)", b"Inline(s)", b"module:lineno(function)", ) ) count = 0 for e in d: file.write( cols % ( e.callcount, e.reccallcount, e.totaltime, e.inlinetime, label(e.code), ) ) count += 1 if limit is not None and count == limit: return ccount = 0 if climit and e.calls: for se in e.calls: file.write( cols % ( se.callcount, se.reccallcount, se.totaltime, se.inlinetime, b" %s" % label(se.code), ) ) count += 1 ccount += 1 if limit is not None and count == limit: return if climit is not None and ccount == climit: break 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:]) _fn2mod = {} def label(code): if isinstance(code, str): if sys.version_info.major >= 3: code = code.encode('latin-1') return code try: mname = _fn2mod[code.co_filename] except KeyError: for k, v in list(pycompat.iteritems(sys.modules)): if v is None: continue if not isinstance(getattr(v, '__file__', None), 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 res = '%s:%d(%s)' % (mname, code.co_firstlineno, code.co_name) if sys.version_info.major >= 3: res = res.encode('latin-1') return res