def Parse(self,
stacktrace_string,
deps,
signature=None,
top_n_frames=None):
"""Parse fracas stacktrace string into Stacktrace instance."""
# Filters to filter callstack buffers.
filters = [
callstack_filters.FilterInlineFunction(),
callstack_filters.KeepTopNFrames(top_n_frames
or DEFAULT_TOP_N_FRAMES)
]
stacktrace_buffer = StacktraceBuffer(signature=signature,
filters=filters)
stack_detector = callstack_detectors.ChromeCrashStackDetector()
# Initial background callstack which is not to be added into Stacktrace.
stack_buffer = CallStackBuffer()
for line in stacktrace_string.splitlines():
start_of_callstack = stack_detector(line)
if start_of_callstack:
stacktrace_buffer.AddFilteredStack(stack_buffer)
stack_buffer = CallStackBuffer.FromStartOfCallStack(
start_of_callstack)
else:
frame = StackFrame.Parse(stack_buffer.language_type,
stack_buffer.format_type, line, deps,
len(stack_buffer.frames))
if frame is not None:
stack_buffer.frames.append(frame)
# Add the last stack to stacktrace.
stacktrace_buffer.AddFilteredStack(stack_buffer)
return stacktrace_buffer.ToStacktrace()
def Parse(
self,
stacktrace_string,
deps,
job_type, # pylint: disable=W0221
sanitizer,
signature=None,
top_n_frames=None,
crash_address=None):
"""Parse clusterfuzz stacktrace string into Stacktrace instance."""
filters = [
FilterJavaJreSdkFrames(),
KeepV8FramesIfV8GeneratedJITCrash(),
FilterV8FramesForV8APIBindingCode(crash_address),
FilterFramesAfterBlinkGeneratedCode(),
FilterV8FramesIfV8NotInTopFrames(),
KeepTopNFrames(top_n_frames or DEFAULT_TOP_N_FRAMES)
]
stacktrace_buffer = StacktraceBuffer(signature=signature,
filters=filters)
stack_detector = GetCallStackDetector(job_type, sanitizer)
if stack_detector is None:
logging.error(
'Cannot find CallStackDetector for crash %s (job type: %s)',
signature or '', job_type)
return None
# Initial background callstack which is not to be added into Stacktrace.
stack_buffer = CallStackBuffer()
# Reset both stacktrace and callstack flags.
self.flag_manager.ResetAllFlags()
for line in stacktrace_string.splitlines():
# Note, some flags like is_first_stack may be changed inside of stack
# detector.
start_of_callstack = stack_detector(line, flags=self.flag_manager)
if start_of_callstack:
stacktrace_buffer.AddFilteredStack(
self.UpdateMetadataWithFlags(stack_buffer))
# Create new stack and reset callstack scope flags.
stack_buffer = CallStackBuffer.FromStartOfCallStack(
start_of_callstack)
self.flag_manager.ResetGroupFlags(CALLSTACK_FLAG_GROUP)
else:
frame = StackFrame.Parse(stack_buffer.language_type,
stack_buffer.format_type, line, deps,
len(stack_buffer.frames))
if frame is not None:
stack_buffer.frames.append(frame)
# Turn on flags if condition met.
self.flag_manager.ConditionallyTurnOnFlags(line)
# Add the last stack to stacktrace.
stacktrace_buffer.AddFilteredStack(
self.UpdateMetadataWithFlags(stack_buffer))
return stacktrace_buffer.ToStacktrace()
def testFromStartOfCallStack(self):
"""Tests ``FromStartOfCallStack`` with ``StartOfCallStack`` input."""
start_of_callstack = StartOfCallStack(0, CallStackFormatType.DEFAULT,
LanguageType.CPP, {'pid': 123})
stack_buffer = CallStackBuffer.FromStartOfCallStack(start_of_callstack)
self.assertEqual(stack_buffer.priority, start_of_callstack.priority)
self.assertEqual(stack_buffer.format_type,
start_of_callstack.format_type)
self.assertEqual(stack_buffer.language_type,
start_of_callstack.language_type)
self.assertDictEqual(stack_buffer.metadata,
start_of_callstack.metadata)
def testFromNoneStartOfCallStack(self):
"""Tests ``FromStartOfCallStack`` with None input."""
self.assertIsNone(CallStackBuffer.FromStartOfCallStack(None))
