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))