mirror of
https://github.com/klzgrad/naiveproxy.git
synced 2024-11-24 22:36:09 +03:00
77 lines
2.5 KiB
Python
77 lines
2.5 KiB
Python
# Copyright 2017 The Chromium Authors. All rights reserved.
|
|
# Use of this source code is governed by a BSD-style license that can be
|
|
# found in the LICENSE file.
|
|
|
|
"""Utilities for demangling C++ symbols."""
|
|
|
|
import collections
|
|
import logging
|
|
import subprocess
|
|
|
|
import path_util
|
|
|
|
def _DemangleNames(names, tool_prefix):
|
|
"""Uses c++filt to demangle a list of names."""
|
|
proc = subprocess.Popen([path_util.GetCppFiltPath(tool_prefix)],
|
|
stdin=subprocess.PIPE, stdout=subprocess.PIPE)
|
|
stdout = proc.communicate('\n'.join(names))[0]
|
|
assert proc.returncode == 0
|
|
ret = stdout.splitlines()
|
|
if logging.getLogger().isEnabledFor(logging.INFO):
|
|
fail_count = sum(1 for s in ret if s.startswith('_Z'))
|
|
if fail_count:
|
|
logging.info('* Failed to demangle %d/%d items', fail_count, len(ret))
|
|
return ret
|
|
|
|
|
|
def DemangleRemainingSymbols(raw_symbols, tool_prefix):
|
|
"""Demangles any symbols that need it."""
|
|
to_process = [s for s in raw_symbols if s.full_name.startswith('_Z')]
|
|
if not to_process:
|
|
return
|
|
|
|
logging.info('Demangling %d symbols', len(to_process))
|
|
names = _DemangleNames((s.full_name for s in to_process), tool_prefix)
|
|
for i, name in enumerate(names):
|
|
to_process[i].full_name = name
|
|
|
|
|
|
def DemangleSetsInDicts(key_to_names, tool_prefix):
|
|
"""Demangles values as sets, and returns the result.
|
|
|
|
|key_to_names| is a dict from key to sets (or lists) of mangled names.
|
|
"""
|
|
all_names = []
|
|
for names in key_to_names.itervalues():
|
|
all_names.extend(n for n in names if n.startswith('_Z'))
|
|
if not all_names:
|
|
return key_to_names
|
|
|
|
logging.info('Demangling %d values', len(all_names))
|
|
it = iter(_DemangleNames(all_names, tool_prefix))
|
|
ret = {}
|
|
for key, names in key_to_names.iteritems():
|
|
ret[key] = set(next(it) if n.startswith('_Z') else n for n in names)
|
|
assert(next(it, None) is None)
|
|
return ret
|
|
|
|
|
|
def DemangleKeysAndMergeLists(name_to_list, tool_prefix):
|
|
"""Demangles keys of a dict of lists, and returns the result.
|
|
|
|
Keys may demangle to a common name. When this happens, the corresponding lists
|
|
are merged in arbitrary order.
|
|
"""
|
|
keys = [key for key in name_to_list if key.startswith('_Z')]
|
|
if not keys:
|
|
return name_to_list
|
|
|
|
logging.info('Demangling %d keys', len(keys))
|
|
key_iter = iter(_DemangleNames(keys, tool_prefix))
|
|
ret = collections.defaultdict(list)
|
|
for key, val in name_to_list.iteritems():
|
|
ret[next(key_iter) if key.startswith('_Z') else key] += val
|
|
assert(next(key_iter, None) is None)
|
|
logging.info('* %d keys become %d keys' % (len(name_to_list), len(ret)))
|
|
return ret
|