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#!/usr/bin/env python
#
# Copyright (C) 2013 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""stack symbolizes native crash dumps."""
import re
import symbol
def PrintTraceLines(trace_lines):
"""Print back trace."""
maxlen = max(map(lambda tl: len(tl[1]), trace_lines))
print
print "Stack Trace:"
print " RELADDR " + "FUNCTION".ljust(maxlen) + " FILE:LINE"
for tl in trace_lines:
(addr, symbol_with_offset, location) = tl
print " %8s %s %s" % (addr, symbol_with_offset.ljust(maxlen), location)
return
def PrintValueLines(value_lines):
"""Print stack data values."""
maxlen = max(map(lambda tl: len(tl[2]), value_lines))
print
print "Stack Data:"
print " ADDR VALUE " + "FUNCTION".ljust(maxlen) + " FILE:LINE"
for vl in value_lines:
(addr, value, symbol_with_offset, location) = vl
print " %8s %8s %s %s" % (addr, value, symbol_with_offset.ljust(maxlen), location)
return
UNKNOWN = "<unknown>"
HEAP = "[heap]"
STACK = "[stack]"
def PrintOutput(trace_lines, value_lines):
if trace_lines:
PrintTraceLines(trace_lines)
if value_lines:
PrintValueLines(value_lines)
def PrintDivider():
print
print "-----------------------------------------------------\n"
def ConvertTrace(lines):
"""Convert strings containing native crash to a stack."""
process_info_line = re.compile("(pid: [0-9]+, tid: [0-9]+.*)")
signal_line = re.compile("(signal [0-9]+ \(.*\).*)")
register_line = re.compile("(([ ]*[0-9a-z]{2} [0-9a-f]{8}){4})")
thread_line = re.compile("(.*)(\-\-\- ){15}\-\-\-")
dalvik_jni_thread_line = re.compile("(\".*\" prio=[0-9]+ tid=[0-9]+ NATIVE.*)")
dalvik_native_thread_line = re.compile("(\".*\" sysTid=[0-9]+ nice=[0-9]+.*)")
# Note that both trace and value line matching allow for variable amounts of
# whitespace (e.g. \t). This is because the we want to allow for the stack
# tool to operate on AndroidFeedback provided system logs. AndroidFeedback
# strips out double spaces that are found in tombsone files and logcat output.
#
# Examples of matched trace lines include lines from tombstone files like:
# #00 pc 001cf42e /data/data/com.my.project/lib/libmyproject.so
# #00 pc 001cf42e /data/data/com.my.project/lib/libmyproject.so (symbol)
# Or lines from AndroidFeedback crash report system logs like:
# 03-25 00:51:05.520 I/DEBUG ( 65): #00 pc 001cf42e /data/data/com.my.project/lib/libmyproject.so
# Please note the spacing differences.
trace_line = re.compile("(.*)\#([0-9]+)[ \t]+(..)[ \t]+([0-9a-f]{8})[ \t]+([^\r\n \t]*)( \((.*)\))?") # pylint: disable-msg=C6310
# Examples of matched value lines include:
# bea4170c 8018e4e9 /data/data/com.my.project/lib/libmyproject.so
# bea4170c 8018e4e9 /data/data/com.my.project/lib/libmyproject.so (symbol)
# 03-25 00:51:05.530 I/DEBUG ( 65): bea4170c 8018e4e9 /data/data/com.my.project/lib/libmyproject.so
# Again, note the spacing differences.
value_line = re.compile("(.*)([0-9a-f]{8})[ \t]+([0-9a-f]{8})[ \t]+([^\r\n \t]*)( \((.*)\))?")
# Lines from 'code around' sections of the output will be matched before
# value lines because otheriwse the 'code around' sections will be confused as
# value lines.
#
# Examples include:
# 801cf40c ffffc4cc 00b2f2c5 00b2f1c7 00c1e1a8
# 03-25 00:51:05.530 I/DEBUG ( 65): 801cf40c ffffc4cc 00b2f2c5 00b2f1c7 00c1e1a8
code_line = re.compile("(.*)[ \t]*[a-f0-9]{8}[ \t]*[a-f0-9]{8}[ \t]*[a-f0-9]{8}[ \t]*[a-f0-9]{8}[ \t]*[a-f0-9]{8}[ \t]*[ \r\n]") # pylint: disable-msg=C6310
trace_lines = []
value_lines = []
last_frame = -1
for ln in lines:
# AndroidFeedback adds zero width spaces into its crash reports. These
# should be removed or the regular expresssions will fail to match.
line = unicode(ln, errors='ignore')
process_header = process_info_line.search(line)
signal_header = signal_line.search(line)
register_header = register_line.search(line)
thread_header = thread_line.search(line)
dalvik_jni_thread_header = dalvik_jni_thread_line.search(line)
dalvik_native_thread_header = dalvik_native_thread_line.search(line)
if process_header or signal_header or register_header or thread_header \
or dalvik_jni_thread_header or dalvik_native_thread_header:
if trace_lines or value_lines:
PrintOutput(trace_lines, value_lines)
PrintDivider()
trace_lines = []
value_lines = []
last_frame = -1
if process_header:
print process_header.group(1)
if signal_header:
print signal_header.group(1)
if register_header:
print register_header.group(1)
if thread_header:
print thread_header.group(1)
if dalvik_jni_thread_header:
print dalvik_jni_thread_header.group(1)
if dalvik_native_thread_header:
print dalvik_native_thread_header.group(1)
continue
if trace_line.match(line):
match = trace_line.match(line)
(unused_0, frame, unused_1,
code_addr, area, symbol_present, symbol_name) = match.groups()
if frame <= last_frame and (trace_lines or value_lines):
PrintOutput(trace_lines, value_lines)
PrintDivider()
trace_lines = []
value_lines = []
last_frame = frame
if area == UNKNOWN or area == HEAP or area == STACK:
trace_lines.append((code_addr, "", area))
else:
# If a calls b which further calls c and c is inlined to b, we want to
# display "a -> b -> c" in the stack trace instead of just "a -> c"
info = symbol.SymbolInformation(area, code_addr)
nest_count = len(info) - 1
for (source_symbol, source_location, object_symbol_with_offset) in info:
if not source_symbol:
if symbol_present:
source_symbol = symbol.CallCppFilt(symbol_name)
else:
source_symbol = UNKNOWN
if not source_location:
source_location = area
if nest_count > 0:
nest_count = nest_count - 1
trace_lines.append(("v------>", source_symbol, source_location))
else:
if not object_symbol_with_offset:
object_symbol_with_offset = source_symbol
trace_lines.append((code_addr,
object_symbol_with_offset,
source_location))
if code_line.match(line):
# Code lines should be ignored. If this were exluded the 'code around'
# sections would trigger value_line matches.
continue;
if value_line.match(line):
match = value_line.match(line)
(unused_, addr, value, area, symbol_present, symbol_name) = match.groups()
if area == UNKNOWN or area == HEAP or area == STACK or not area:
value_lines.append((addr, value, "", area))
else:
info = symbol.SymbolInformation(area, value)
(source_symbol, source_location, object_symbol_with_offset) = info.pop()
if not source_symbol:
if symbol_present:
source_symbol = symbol.CallCppFilt(symbol_name)
else:
source_symbol = UNKNOWN
if not source_location:
source_location = area
if not object_symbol_with_offset:
object_symbol_with_offset = source_symbol
value_lines.append((addr,
value,
object_symbol_with_offset,
source_location))
PrintOutput(trace_lines, value_lines)
# vi: ts=2 sw=2
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