forked from M-Labs/artiq
coredevice: report nested exceptions
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6ec003c1c9
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ba34700798
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@ -212,6 +212,7 @@ class Target:
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# just after the call. Offset them back to get an address somewhere
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# inside the call instruction (or its delay slot), since that's what
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# the backtrace entry should point at.
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last_inlined = None
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offset_addresses = [hex(addr - 1) for addr in addresses]
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with RunTool([self.tool_addr2line, "--addresses", "--functions", "--inlines",
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"--demangle", "--exe={library}"] + offset_addresses,
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@ -227,9 +228,11 @@ class Target:
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if address_or_function[:2] == "0x":
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address = int(address_or_function[2:], 16) + 1 # remove offset
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function = next(lines)
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inlined = False
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else:
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address = backtrace[-1][4] # inlined
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function = address_or_function
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inlined = True
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location = next(lines)
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filename, line = location.rsplit(":", 1)
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@ -240,7 +243,12 @@ class Target:
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else:
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line = int(line)
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# can't get column out of addr2line D:
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backtrace.append((filename, line, -1, function, address))
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if inlined:
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last_inlined.append((filename, line, -1, function, address))
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else:
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last_inlined = []
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backtrace.append((filename, line, -1, function, address,
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last_inlined))
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return backtrace
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def demangle(self, names):
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@ -623,28 +623,59 @@ class CommKernel:
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self._flush()
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def _serve_exception(self, embedding_map, symbolizer, demangler):
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name = self._read_string()
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message = self._read_string()
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params = [self._read_int64() for _ in range(3)]
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exception_count = self._read_int32()
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nested_exceptions = []
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filename = self._read_string()
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line = self._read_int32()
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column = self._read_int32()
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function = self._read_string()
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def read_exception_string():
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# note: if length == -1, the following int32 is the object key
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length = self._read_int32()
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if length == -1:
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return embedding_map.retrieve_str(self._read_int32())
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else:
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return self._read(length).decode("utf-8")
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for _ in range(exception_count):
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name = embedding_map.retrieve_str(self._read_int32())
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message = read_exception_string()
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params = [self._read_int64() for _ in range(3)]
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filename = read_exception_string()
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line = self._read_int32()
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column = self._read_int32()
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function = read_exception_string()
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nested_exceptions.append([name, message, params,
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filename, line, column, function])
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demangled_names = demangler([ex[6] for ex in nested_exceptions])
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for i in range(exception_count):
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nested_exceptions[i][6] = demangled_names[i]
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exception_info = []
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for _ in range(exception_count):
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sp = self._read_int32()
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initial_backtrace = self._read_int32()
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current_backtrace = self._read_int32()
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exception_info.append((sp, initial_backtrace, current_backtrace))
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backtrace = []
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stack_pointers = []
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for _ in range(self._read_int32()):
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backtrace.append(self._read_int32())
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stack_pointers.append(self._read_int32())
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backtrace = [self._read_int32() for _ in range(self._read_int32())]
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self._process_async_error()
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traceback = list(reversed(symbolizer(backtrace))) + \
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[(filename, line, column, *demangler([function]), None)]
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core_exn = exceptions.CoreException(name, message, params, traceback)
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traceback = list(symbolizer(backtrace))
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core_exn = exceptions.CoreException(nested_exceptions, exception_info,
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traceback, stack_pointers)
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if core_exn.id == 0:
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python_exn_type = getattr(exceptions, core_exn.name.split('.')[-1])
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else:
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python_exn_type = embedding_map.retrieve_object(core_exn.id)
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python_exn = python_exn_type(message.format(*params))
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python_exn = python_exn_type(
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nested_exceptions[-1][1].format(*nested_exceptions[0][2]))
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python_exn.artiq_core_exception = core_exn
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raise python_exn
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@ -16,50 +16,94 @@ AssertionError = builtins.AssertionError
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class CoreException:
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"""Information about an exception raised or passed through the core device."""
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def __init__(self, exceptions, exception_info, traceback, stack_pointers):
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self.exceptions = exceptions
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self.exception_info = exception_info
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self.traceback = list(traceback)
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self.stack_pointers = stack_pointers
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def __init__(self, name, message, params, traceback):
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first_exception = exceptions[0]
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name = first_exception[0]
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if ':' in name:
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exn_id, self.name = name.split(':', 2)
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self.id = int(exn_id)
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else:
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self.id, self.name = 0, name
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self.message, self.params = message, params
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self.traceback = list(traceback)
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self.message = first_exception[1]
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self.params = first_exception[2]
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def append_backtrace(self, record, inlined=False):
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filename, line, column, function, address = record
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stub_globals = {"__name__": filename, "__loader__": source_loader}
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source_line = linecache.getline(filename, line, stub_globals)
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indentation = re.search(r"^\s*", source_line).end()
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if address is None:
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formatted_address = ""
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elif inlined:
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formatted_address = " (inlined)"
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else:
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formatted_address = " (RA=+0x{:x})".format(address)
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filename = filename.replace(artiq_dir, "<artiq>")
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lines = []
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if column == -1:
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lines.append(" {}".format(source_line.strip() if source_line else "<unknown>"))
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lines.append(" File \"{file}\", line {line}, in {function}{address}".
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format(file=filename, line=line, function=function,
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address=formatted_address))
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else:
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lines.append(" {}^".format(" " * (column - indentation)))
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lines.append(" {}".format(source_line.strip() if source_line else "<unknown>"))
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lines.append(" File \"{file}\", line {line}, column {column},"
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" in {function}{address}".
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format(file=filename, line=line, column=column + 1,
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function=function, address=formatted_address))
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return lines
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def single_traceback(self, exception_index):
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# note that we insert in reversed order
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lines = []
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last_sp = 0
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start_backtrace_index = self.exception_info[exception_index][1]
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zipped = list(zip(self.traceback[start_backtrace_index:],
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self.stack_pointers[start_backtrace_index:]))
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exception = self.exceptions[exception_index]
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name = exception[0]
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message = exception[1]
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params = exception[2]
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if ':' in name:
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exn_id, name = name.split(':', 2)
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exn_id = int(exn_id)
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else:
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exn_id = 0
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lines.append("{}({}): {}".format(name, exn_id, message.format(*params)))
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zipped.append(((exception[3], exception[4], exception[5], exception[6],
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None, []), None))
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for ((filename, line, column, function, address, inlined), sp) in zipped:
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# backtrace of nested exceptions may be discontinuous
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# but the stack pointer must increase monotonically
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if sp is not None and sp <= last_sp:
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continue
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last_sp = sp
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for record in reversed(inlined):
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lines += self.append_backtrace(record, True)
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lines += self.append_backtrace((filename, line, column, function,
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address))
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lines.append("Traceback (most recent call first):")
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return "\n".join(reversed(lines))
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def __str__(self):
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lines = []
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lines.append("Core Device Traceback (most recent call last):")
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last_address = 0
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for (filename, line, column, function, address) in self.traceback:
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stub_globals = {"__name__": filename, "__loader__": source_loader}
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source_line = linecache.getline(filename, line, stub_globals)
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indentation = re.search(r"^\s*", source_line).end()
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if address is None:
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formatted_address = ""
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elif address == last_address:
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formatted_address = " (inlined)"
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else:
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formatted_address = " (RA=+0x{:x})".format(address)
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last_address = address
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filename = filename.replace(artiq_dir, "<artiq>")
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if column == -1:
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lines.append(" File \"{file}\", line {line}, in {function}{address}".
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format(file=filename, line=line, function=function,
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address=formatted_address))
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lines.append(" {}".format(source_line.strip() if source_line else "<unknown>"))
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else:
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lines.append(" File \"{file}\", line {line}, column {column},"
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" in {function}{address}".
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format(file=filename, line=line, column=column + 1,
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function=function, address=formatted_address))
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lines.append(" {}".format(source_line.strip() if source_line else "<unknown>"))
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lines.append(" {}^".format(" " * (column - indentation)))
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lines.append("{}({}): {}".format(self.name, self.id,
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self.message.format(*self.params)))
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return "\n".join(lines)
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tracebacks = [self.single_traceback(i) for i in range(len(self.exceptions))]
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traceback_str = ('\n\nDuring handling of the above exception, ' +
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'another exception occurred:\n\n').join(tracebacks)
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return 'Core Device Traceback:\n' +\
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traceback_str +\
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'\n\nEnd of Code Device Traceback\n'
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class InternalError(Exception):
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