mercurial/lsprof.py

pytype: stop excluding statprof.py

This seems to have worked fine before (at least on Linux).  We could just add
suppression comments, but this file already imports from the mercurial package,
which seems to prevent this from running as a standalone program because of the
relative import of `pycompat`.  PyCharm isn't happy either way.

  File "/mnt/c/Users/Matt/hg/mercurial/statprof.py", line 501, in display:
      Function TextIO.write was called with the wrong arguments [wrong-arg-types]
           Expected: (self, s: str)
    Actually passed: (self, s: bytes)
  Called from (traceback):
    line 1091, in main
  File "/mnt/c/Users/Matt/hg/mercurial/statprof.py", line 501, in display:
      Function TextIO.write was called with the wrong arguments [wrong-arg-types]
           Expected: (self, s: str)
    Actually passed: (self, s: bytes)
  Called from (traceback):
    line 431, in profile
  File "/mnt/c/Users/Matt/hg/mercurial/statprof.py", line 522, in display:
      Function TextIO.write was called with the wrong arguments [wrong-arg-types]
           Expected: (self, s: str)
    Actually passed: (self, s: bytes)
  Called from (traceback):
    line 1091, in main
  File "/mnt/c/Users/Matt/hg/mercurial/statprof.py", line 522, in display:
      Function TextIO.write was called with the wrong arguments [wrong-arg-types]
           Expected: (self, s: str)
    Actually passed: (self, s: bytes)
  Called from (traceback):
    line 431, in profile
  File "/mnt/c/Users/Matt/hg/mercurial/statprof.py", line 523, in display:
      Function TextIO.write was called with the wrong arguments [wrong-arg-types]
           Expected: (self, s: str)
    Actually passed: (self, s: bytes)
  Called from (traceback):
    line 1091, in main
  File "/mnt/c/Users/Matt/hg/mercurial/statprof.py", line 523, in display:
      Function TextIO.write was called with the wrong arguments [wrong-arg-types]
           Expected: (self, s: str)
    Actually passed: (self, s: bytes)
  Called from (traceback):
    line 431, in profile
  File "/mnt/c/Users/Matt/hg/mercurial/statprof.py", line 524, in display:
      Function TextIO.write was called with the wrong arguments [wrong-arg-types]
           Expected: (self, s: str)
    Actually passed: (self, s: bytes)
  Called from (traceback):
    line 1091, in main
  File "/mnt/c/Users/Matt/hg/mercurial/statprof.py", line 524, in display:
      Function TextIO.write was called with the wrong arguments [wrong-arg-types]
           Expected: (self, s: str)
    Actually passed: (self, s: bytes)
  Called from (traceback):
    line 431, in profile
  File "/mnt/c/Users/Matt/hg/mercurial/statprof.py", line 796, in _write:
      Function TextIO.write was called with the wrong arguments [wrong-arg-types]
           Expected: (self, s: str)
    Actually passed: (self, s: bytes)

Differential Revision: https://phab.mercurial-scm.org/D11921

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