mirror of
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99 lines
4.6 KiB
Python
99 lines
4.6 KiB
Python
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# Copyright 2017 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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import re
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from devil.android import logcat_monitor
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BACKTRACE_LINE_RE = re.compile(r'#\d+')
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THREADTIME_RE = re.compile(
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logcat_monitor.LogcatMonitor.THREADTIME_RE_FORMAT % (
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r' *\S* *', r' *\S* *', r' *\S* *', r' *\S* *', r'.*'))
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def SymbolizeLogcat(logcat, dest, symbolizer, abi):
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"""Symbolize stack trace in the logcat.
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Symbolize the logcat and write the symbolized logcat to a new file.
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Args:
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logcat: Path to logcat file.
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dest: Path to where to write the symbolized logcat.
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symbolizer: The stack symbolizer to symbolize stack trace in logcat.
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abi: The device's product_cpu_abi. Symbolizer needs it to symbolize.
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A sample logcat that needs to be symbolized, after stripping the prefix,
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such as '08-07 18:39:37.692 28649 28649 E Ion : ', would be:
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Build fingerprint: 'google/shamu/shamu:7.1.1/NMF20B/3370:userdebug/dev-keys'
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Revision: '0'
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ABI: 'arm'
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pid: 28936, tid: 28936, name: chromium.chrome >>> org.chromium.chrome <<<
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signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr --------
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Abort message: '[FATAL:debug_urls.cc(151)] Check failed: false.
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#00 0x63e16c41 /data/app/org.chromium.chrome-1/lib/arm/libchrome.so+0x0006cc4
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#01 0x63f19be3 /data/app/org.chromium.chrome-1/lib/arm/libchrome.so+0x0016fbe
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#02 0x63f19737 /data/app/org.chromium.chrome-1/lib/arm/libchrome.so+0x0016f73
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#03 0x63f18ddf /data/app/org.chromium.chrome-1/lib/arm/libchrome.so+0x0016edd
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#04 0x63f18b79 /data/app/org.chromium.chrome-1/lib/arm/libchrome.so+0x0016eb7
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#05 0xab53f319 /system/lib/libart.so+0x000a3319
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#06
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r0 00000000 r1 00007108 r2 00000006 r3 00000008
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r4 ae60258c r5 00000006 r6 ae602534 r7 0000010c
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r8 bede5cd0 r9 00000030 sl 00000000 fp 9265a800
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ip 0000000b sp bede5c38 lr ac8e5537 pc ac8e7da0 cpsr 600f0010
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backtrace:
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#00 pc 00049da0 /system/lib/libc.so (tgkill+12)
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#01 pc 00047533 /system/lib/libc.so (pthread_kill+34)
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#02 pc 0001d635 /system/lib/libc.so (raise+10)
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#03 pc 00019181 /system/lib/libc.so (__libc_android_abort+34)
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#04 pc 00017048 /system/lib/libc.so (abort+4)
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#05 pc 00948605 /data/app/org.chromium.chrome-1/lib/arm/libchrome.so
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#06 pc 002c9f73 /data/app/org.chromium.chrome-1/lib/arm/libchrome.so
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#07 pc 003ccbe1 /data/app/org.chromium.chrome-1/lib/arm/libchrome.so
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#08 pc 003cc735 /data/app/org.chromium.chrome-1/lib/arm/libchrome.so
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#09 pc 003cbddf /data/app/org.chromium.chrome-1/lib/arm/libchrome.so
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#10 pc 003cbb77 /data/app/org.chromium.chrome-1/lib/arm/libchrome.so
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"""
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with open(logcat) as logcat_file:
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with open(dest, 'w') as dest_file:
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# The current stack script will only print out the symbolized stack,
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# and completely ignore logs other than the crash log that is used for
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# symbolization, if any exists. Thus the code here extracts the
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# crash log inside the logcat and pass only the crash log to the script,
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# because we don't want to lose other information in the logcat that,
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# if passed to the stack script, will just be ignored by it.
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# TODO(crbug.com/755225): Rewrite the logic here.
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outside_of_crash_log = True
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in_lower_half_crash = False
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data_to_symbolize = []
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for line in logcat_file:
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if outside_of_crash_log:
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# Check whether it is the start of crash log.
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if 'Build fingerprint: ' in line:
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outside_of_crash_log = False
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# Only include necessary information for symbolization.
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# The logic here that removes date, time, proc_id etc.
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# should be in sync with _THREADTIME_RE_FORMAT in logcat_monitor.
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data_to_symbolize.append(
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re.search(THREADTIME_RE, line).group(7))
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else:
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dest_file.write(line)
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else:
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# Once we have reached the end of the backtrace section,
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# we will start symbolizing.
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if in_lower_half_crash and not bool(BACKTRACE_LINE_RE.search(line)):
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outside_of_crash_log = True
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in_lower_half_crash = False
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symbolized_lines = symbolizer.ExtractAndResolveNativeStackTraces(
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data_to_symbolize, abi)
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dest_file.write('\n'.join(symbolized_lines) + '\n' + line)
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data_to_symbolize = []
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else:
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if not in_lower_half_crash and 'backtrace:' in line:
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in_lower_half_crash = True
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data_to_symbolize.append(
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re.search(THREADTIME_RE, line).group(7))
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