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#!/usr/bin/env python
# Copyright 2014 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.
import functools
import logging
import os
import unittest
from pylib.symbols import elf_symbolizer
from pylib.symbols import mock_addr2line
_MOCK_A2L_PATH = os.path.join(os.path.dirname(mock_addr2line.__file__),
'mock_addr2line')
_INCOMPLETE_MOCK_ADDR = 1024 * 1024
_UNKNOWN_MOCK_ADDR = 2 * 1024 * 1024
_INLINE_MOCK_ADDR = 3 * 1024 * 1024
class ELFSymbolizerTest(unittest.TestCase):
def setUp(self):
self._callback = functools.partial(
ELFSymbolizerTest._SymbolizeCallback, self)
self._resolved_addresses = set()
# Mute warnings, we expect them due to the crash/hang tests.
logging.getLogger().setLevel(logging.ERROR)
def testParallelism1(self):
self._RunTest(max_concurrent_jobs=1, num_symbols=100)
def testParallelism4(self):
self._RunTest(max_concurrent_jobs=4, num_symbols=100)
def testParallelism8(self):
self._RunTest(max_concurrent_jobs=8, num_symbols=100)
def testCrash(self):
os.environ['MOCK_A2L_CRASH_EVERY'] = '99'
self._RunTest(max_concurrent_jobs=1, num_symbols=100)
os.environ['MOCK_A2L_CRASH_EVERY'] = '0'
def testHang(self):
os.environ['MOCK_A2L_HANG_EVERY'] = '99'
self._RunTest(max_concurrent_jobs=1, num_symbols=100)
os.environ['MOCK_A2L_HANG_EVERY'] = '0'
def testInlines(self):
"""Stimulate the inline processing logic."""
symbolizer = elf_symbolizer.ELFSymbolizer(
elf_file_path='/path/doesnt/matter/mock_lib1.so',
addr2line_path=_MOCK_A2L_PATH,
callback=self._callback,
inlines=True,
max_concurrent_jobs=4)
for addr in xrange(1000):
exp_inline = False
exp_unknown = False
# First 100 addresses with inlines.
if addr < 100:
addr += _INLINE_MOCK_ADDR
exp_inline = True
# Followed by 100 without inlines.
elif addr < 200:
pass
# Followed by 100 interleaved inlines and not inlines.
elif addr < 300:
if addr & 1:
addr += _INLINE_MOCK_ADDR
exp_inline = True
# Followed by 100 interleaved inlines and unknonwn.
elif addr < 400:
if addr & 1:
addr += _INLINE_MOCK_ADDR
exp_inline = True
else:
addr += _UNKNOWN_MOCK_ADDR
exp_unknown = True
exp_name = 'mock_sym_for_addr_%d' % addr if not exp_unknown else None
exp_source_path = 'mock_src/mock_lib1.so.c' if not exp_unknown else None
exp_source_line = addr if not exp_unknown else None
cb_arg = (addr, exp_name, exp_source_path, exp_source_line, exp_inline)
symbolizer.SymbolizeAsync(addr, cb_arg)
symbolizer.Join()
def testIncompleteSyminfo(self):
"""Stimulate the symbol-not-resolved logic."""
symbolizer = elf_symbolizer.ELFSymbolizer(
elf_file_path='/path/doesnt/matter/mock_lib1.so',
addr2line_path=_MOCK_A2L_PATH,
callback=self._callback,
max_concurrent_jobs=1)
# Test symbols with valid name but incomplete path.
addr = _INCOMPLETE_MOCK_ADDR
exp_name = 'mock_sym_for_addr_%d' % addr
exp_source_path = None
exp_source_line = None
cb_arg = (addr, exp_name, exp_source_path, exp_source_line, False)
symbolizer.SymbolizeAsync(addr, cb_arg)
# Test symbols with no name or sym info.
addr = _UNKNOWN_MOCK_ADDR
exp_name = None
exp_source_path = None
exp_source_line = None
cb_arg = (addr, exp_name, exp_source_path, exp_source_line, False)
symbolizer.SymbolizeAsync(addr, cb_arg)
symbolizer.Join()
def testWaitForIdle(self):
symbolizer = elf_symbolizer.ELFSymbolizer(
elf_file_path='/path/doesnt/matter/mock_lib1.so',
addr2line_path=_MOCK_A2L_PATH,
callback=self._callback,
max_concurrent_jobs=1)
# Test symbols with valid name but incomplete path.
addr = _INCOMPLETE_MOCK_ADDR
exp_name = 'mock_sym_for_addr_%d' % addr
exp_source_path = None
exp_source_line = None
cb_arg = (addr, exp_name, exp_source_path, exp_source_line, False)
symbolizer.SymbolizeAsync(addr, cb_arg)
symbolizer.WaitForIdle()
# Test symbols with no name or sym info.
addr = _UNKNOWN_MOCK_ADDR
exp_name = None
exp_source_path = None
exp_source_line = None
cb_arg = (addr, exp_name, exp_source_path, exp_source_line, False)
symbolizer.SymbolizeAsync(addr, cb_arg)
symbolizer.Join()
def _RunTest(self, max_concurrent_jobs, num_symbols):
symbolizer = elf_symbolizer.ELFSymbolizer(
elf_file_path='/path/doesnt/matter/mock_lib1.so',
addr2line_path=_MOCK_A2L_PATH,
callback=self._callback,
max_concurrent_jobs=max_concurrent_jobs,
addr2line_timeout=0.5)
for addr in xrange(num_symbols):
exp_name = 'mock_sym_for_addr_%d' % addr
exp_source_path = 'mock_src/mock_lib1.so.c'
exp_source_line = addr
cb_arg = (addr, exp_name, exp_source_path, exp_source_line, False)
symbolizer.SymbolizeAsync(addr, cb_arg)
symbolizer.Join()
# Check that all the expected callbacks have been received.
for addr in xrange(num_symbols):
self.assertIn(addr, self._resolved_addresses)
self._resolved_addresses.remove(addr)
# Check for unexpected callbacks.
self.assertEqual(len(self._resolved_addresses), 0)
def _SymbolizeCallback(self, sym_info, cb_arg):
self.assertTrue(isinstance(sym_info, elf_symbolizer.ELFSymbolInfo))
self.assertTrue(isinstance(cb_arg, tuple))
self.assertEqual(len(cb_arg), 5)
# Unpack expectations from the callback extra argument.
(addr, exp_name, exp_source_path, exp_source_line, exp_inlines) = cb_arg
if exp_name is None:
self.assertIsNone(sym_info.name)
else:
self.assertTrue(sym_info.name.startswith(exp_name))
self.assertEqual(sym_info.source_path, exp_source_path)
self.assertEqual(sym_info.source_line, exp_source_line)
if exp_inlines:
self.assertEqual(sym_info.name, exp_name + '_inner')
self.assertEqual(sym_info.inlined_by.name, exp_name + '_middle')
self.assertEqual(sym_info.inlined_by.inlined_by.name,
exp_name + '_outer')
# Check against duplicate callbacks.
self.assertNotIn(addr, self._resolved_addresses)
self._resolved_addresses.add(addr)
if __name__ == '__main__':
unittest.main()
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