ꦫꦣꦺꦤ꧀ꦄꦤ꧀ꦠꦱꦺꦤ

PATH: usr / lib64 / python2.7 / Tools / scripts

#! /usr/bin/env python
"""
Some helper functions to analyze the output of sys.getdxp() (which is
only available if Python was built with -DDYNAMIC_EXECUTION_PROFILE).
These will tell you which opcodes have been executed most frequently
in the current process, and, if Python was also built with -DDXPAIRS,
will tell you which instruction _pairs_ were executed most frequently,
which may help in choosing new instructions.

If Python was built without -DDYNAMIC_EXECUTION_PROFILE, importing
this module will raise a RuntimeError.

If you're running a script you want to profile, a simple way to get
the common pairs is:

$ PYTHONPATH=$PYTHONPATH:<python_srcdir>/Tools/scripts \
./python -i -O the_script.py --args
...
> from analyze_dxp import *
> s = render_common_pairs()
> open('/tmp/some_file', 'w').write(s)
"""

import copy
import opcode
import operator
import sys
import threading

if not hasattr(sys, "getdxp"):
    raise RuntimeError("Can't import analyze_dxp: Python built without"
                       " -DDYNAMIC_EXECUTION_PROFILE.")

_profile_lock = threading.RLock()
_cumulative_profile = sys.getdxp()

# If Python was built with -DDXPAIRS, sys.getdxp() returns a list of
# lists of ints.  Otherwise it returns just a list of ints.
def has_pairs(profile):
    """Returns True if the Python that produced the argument profile
    was built with -DDXPAIRS."""

return len(profile) > 0 and isinstance(profile[0], list)

def reset_profile():
    """Forgets any execution profile that has been gathered so far."""
    with _profile_lock:
        sys.getdxp()  # Resets the internal profile
        global _cumulative_profile
        _cumulative_profile = sys.getdxp()  # 0s out our copy.

def merge_profile():
    """Reads sys.getdxp() and merges it into this module's cached copy.

We need this because sys.getdxp() 0s itself every time it's called."""

with _profile_lock:
        new_profile = sys.getdxp()
        if has_pairs(new_profile):
            for first_inst in range(len(_cumulative_profile)):
                for second_inst in range(len(_cumulative_profile[first_inst])):
                    _cumulative_profile[first_inst][second_inst] += (
                        new_profile[first_inst][second_inst])
        else:
            for inst in range(len(_cumulative_profile)):
                _cumulative_profile[inst] += new_profile[inst]

def snapshot_profile():
    """Returns the cumulative execution profile until this call."""
    with _profile_lock:
        merge_profile()
        return copy.deepcopy(_cumulative_profile)

def common_instructions(profile):
    """Returns the most common opcodes in order of descending frequency.

The result is a list of tuples of the form
      (opcode, opname, # of occurrences)

"""
    if has_pairs(profile) and profile:
        inst_list = profile[-1]
    else:
        inst_list = profile
    result = [(op, opcode.opname[op], count)
              for op, count in enumerate(inst_list)
              if count > 0]
    result.sort(key=operator.itemgetter(2), reverse=True)
    return result

def common_pairs(profile):
    """Returns the most common opcode pairs in order of descending frequency.

The result is a list of tuples of the form
      ((1st opcode, 2nd opcode),
       (1st opname, 2nd opname),
       # of occurrences of the pair)

"""
    if not has_pairs(profile):
        return []
    result = [((op1, op2), (opcode.opname[op1], opcode.opname[op2]), count)
              # Drop the row of single-op profiles with [:-1]
              for op1, op1profile in enumerate(profile[:-1])
              for op2, count in enumerate(op1profile)
              if count > 0]
    result.sort(key=operator.itemgetter(2), reverse=True)
    return result

def render_common_pairs(profile=None):
    """Renders the most common opcode pairs to a string in order of
    descending frequency.

The result is a series of lines of the form:
      # of occurrences: ('1st opname', '2nd opname')

"""
    if profile is None:
        profile = snapshot_profile()
    def seq():
        for _, ops, count in common_pairs(profile):
            yield "%s: %s\n" % (count, ops)
    return ''.join(seq())

[+] ..
[-] setup.pyo [edit]
[-] classfix.py [edit]
[-] cvsfiles.pyo [edit]
[-] fixps.pyc [edit]
[-] fixdiv.py [edit]
[-] ptags.pyc [edit]
[-] pysource.pyc [edit]
[-] h2py.py [edit]
[-] svneol.py [edit]
[-] win_add2path.pyc [edit]
[-] suff.py [edit]
[-] untabify.py [edit]
[-] parseentities.py [edit]
[-] objgraph.pyc [edit]
[-] mailerdaemon.pyo [edit]
[-] findlinksto.pyo [edit]
[-] checkappend.py [edit]
[-] fixps.py [edit]
[-] untabify.pyo [edit]
[-] setup.py [edit]
[-] find_recursionlimit.pyc [edit]
[-] nm2def.pyc [edit]
[-] copytime.pyo [edit]
[-] dutree.pyc [edit]
[-] which.py [edit]
[-] db2pickle.pyo [edit]
[-] serve.pyo [edit]
[-] svneol.pyc [edit]
[-] lll.py [edit]
[-] pindent.pyc [edit]
[-] h2py.pyo [edit]
[-] lll.pyo [edit]
[-] analyze_dxp.py [edit]
[-] byteyears.pyc [edit]
[-] reindent-rst.pyo [edit]
[-] serve.py [edit]
[-] mkreal.py [edit]
[-] ndiff.pyo [edit]
[-] combinerefs.pyc [edit]
[-] diff.pyc [edit]
[-] fixnotice.pyo [edit]
[-] texcheck.pyc [edit]
[-] analyze_dxp.pyo [edit]
[-] byext.py [edit]
[-] dutree.py [edit]
[-] which.pyc [edit]
[-] texcheck.pyo [edit]
[-] reindent.pyo [edit]
[-] methfix.pyo [edit]
[-] ndiff.py [edit]
[-] texi2html.pyc [edit]
[-] parseentities.pyc [edit]
[-] checkpyc.pyc [edit]
[-] hotshotmain.py [edit]
[-] ftpmirror.pyo [edit]
[-] fixps.pyo [edit]
[-] redemo.pyo [edit]
[-] fixcid.pyo [edit]
[-] finddiv.pyo [edit]
[-] which.pyo [edit]
[-] redemo.py [edit]
[-] suff.pyc [edit]
[-] cleanfuture.py [edit]
[-] combinerefs.py [edit]
[-] ptags.pyo [edit]
[-] byext.pyc [edit]
[-] db2pickle.py [edit]
[-] cvsfiles.py [edit]
[-] pindent.py [edit]
[-] diff.pyo [edit]
[-] analyze_dxp.pyc [edit]
[-] cleanfuture.pyo [edit]
[-] dutree.pyo [edit]
[-] eptags.pyo [edit]
[-] pysource.py [edit]
[-] reindent.pyc [edit]
[-] google.pyc [edit]
[-] logmerge.py [edit]
[-] lfcr.py [edit]
[-] finddiv.pyc [edit]
[-] classfix.pyo [edit]
[-] lfcr.pyo [edit]
[-] treesync.py [edit]
[-] hotshotmain.pyo [edit]
[-] nm2def.py [edit]
[-] byext.pyo [edit]
[-] ftpmirror.py [edit]
[-] treesync.pyc [edit]
[-] copytime.py [edit]
[-] finddiv.py [edit]
[-] ifdef.py [edit]
[-] patchcheck.pyo [edit]
[-] objgraph.pyo [edit]
[-] ptags.py [edit]
[-] objgraph.py [edit]
[-] cvsfiles.pyc [edit]
[-] pysource.pyo [edit]
[-] pathfix.py [edit]
[-] linktree.pyc [edit]
[-] eptags.py [edit]
[-] patchcheck.py [edit]
[-] mkreal.pyc [edit]
[-] rgrep.pyc [edit]
[-] google.py [edit]
[-] win_add2path.py [edit]
[-] texcheck.py [edit]
[-] pathfix.pyo [edit]
[-] gprof2html.py [edit]
[-] pickle2db.pyc [edit]
[-] findnocoding.pyc [edit]
[-] nm2def.pyo [edit]
[-] checkappend.pyo [edit]
[-] texi2html.py [edit]
[-] crlf.pyc [edit]
[-] treesync.pyo [edit]
[-] findlinksto.py [edit]
[-] pdeps.pyc [edit]
[-] fixheader.pyo [edit]
[-] pdeps.pyo [edit]
[-] findnocoding.py [edit]
[-] setup.pyc [edit]
[-] methfix.pyc [edit]
[-] logmerge.pyo [edit]
[-] reindent.py [edit]
[-] hotshotmain.pyc [edit]
[-] gprof2html.pyc [edit]
[-] redemo.pyc [edit]
[-] fixheader.py [edit]
[-] diff.py [edit]
[-] classfix.pyc [edit]
[-] ftpmirror.pyc [edit]
[-] google.pyo [edit]
[-] db2pickle.pyc [edit]
[-] pathfix.pyc [edit]
[-] ifdef.pyo [edit]
[-] xxci.pyc [edit]
[-] rgrep.pyo [edit]
[-] cleanfuture.pyc [edit]
[-] reindent-rst.pyc [edit]
[-] svneol.pyo [edit]
[-] xxci.pyo [edit]
[-] parseentities.pyo [edit]
[-] md5sum.py [edit]
[-] eptags.pyc [edit]
[-] mailerdaemon.pyc [edit]
[-] pickle2db.pyo [edit]
[-] win_add2path.pyo [edit]
[-] serve.pyc [edit]
[-] byteyears.pyo [edit]
[-] fixdiv.pyo [edit]
[-] logmerge.pyc [edit]
[-] pickle2db.py [edit]
[-] checkpyc.pyo [edit]
[-] fixdiv.pyc [edit]
[-] find_recursionlimit.py [edit]
[-] crlf.pyo [edit]
[-] suff.pyo [edit]
[-] lll.pyc [edit]
[-] rgrep.py [edit]
[-] untabify.pyc [edit]
[-] ifdef.pyc [edit]
[-] fixheader.pyc [edit]
[-] fixcid.pyc [edit]
[-] crlf.py [edit]
[-] checkappend.pyc [edit]
[-] xxci.py [edit]
[-] findnocoding.pyo [edit]
[-] mkreal.pyo [edit]
[-] patchcheck.pyc [edit]
[-] linktree.pyo [edit]
[-] texi2html.pyo [edit]
[-] fixcid.py [edit]
[-] ndiff.pyc [edit]
[-] md5sum.pyo [edit]
[-] findlinksto.pyc [edit]
[-] reindent-rst.py [edit]
[-] linktree.py [edit]
[-] byteyears.py [edit]
[-] md5sum.pyc [edit]
[-] copytime.pyc [edit]
[-] combinerefs.pyo [edit]
[-] fixnotice.py [edit]
[-] pdeps.py [edit]
[-] fixnotice.pyc [edit]
[-] lfcr.pyc [edit]
[-] checkpyc.py [edit]
[-] methfix.py [edit]
[-] pindent.pyo [edit]
[-] mailerdaemon.py [edit]
[-] gprof2html.pyo [edit]
[-] h2py.pyc [edit]
[-] find_recursionlimit.pyo [edit]