artiq/artiq/coredevice/exceptions.py

163 lines
5.7 KiB
Python

import builtins
import linecache
import re
import os
from artiq import __artiq_dir__ as artiq_dir
from artiq.coredevice.runtime import source_loader
ZeroDivisionError = builtins.ZeroDivisionError
ValueError = builtins.ValueError
IndexError = builtins.IndexError
RuntimeError = builtins.RuntimeError
AssertionError = builtins.AssertionError
class CoreException:
"""Information about an exception raised or passed through the core device."""
def __init__(self, exceptions, exception_info, traceback, stack_pointers):
self.exceptions = exceptions
self.exception_info = exception_info
self.traceback = list(traceback)
self.stack_pointers = stack_pointers
first_exception = exceptions[0]
name = first_exception[0]
if ':' in name:
exn_id, self.name = name.split(':', 2)
self.id = int(exn_id)
else:
self.id, self.name = 0, name
self.message = first_exception[1]
self.params = first_exception[2]
def append_backtrace(self, record, inlined=False):
filename, line, column, function, address = record
stub_globals = {"__name__": filename, "__loader__": source_loader}
source_line = linecache.getline(filename, line, stub_globals)
indentation = re.search(r"^\s*", source_line).end()
if address is None:
formatted_address = ""
elif inlined:
formatted_address = " (inlined)"
else:
formatted_address = " (RA=+0x{:x})".format(address)
filename = filename.replace(artiq_dir, "<artiq>")
lines = []
if column == -1:
lines.append(" {}".format(source_line.strip() if source_line else "<unknown>"))
lines.append(" File \"{file}\", line {line}, in {function}{address}".
format(file=filename, line=line, function=function,
address=formatted_address))
else:
lines.append(" {}^".format(" " * (column - indentation)))
lines.append(" {}".format(source_line.strip() if source_line else "<unknown>"))
lines.append(" File \"{file}\", line {line}, column {column},"
" in {function}{address}".
format(file=filename, line=line, column=column + 1,
function=function, address=formatted_address))
return lines
def single_traceback(self, exception_index):
# note that we insert in reversed order
lines = []
last_sp = 0
start_backtrace_index = self.exception_info[exception_index][1]
zipped = list(zip(self.traceback[start_backtrace_index:],
self.stack_pointers[start_backtrace_index:]))
exception = self.exceptions[exception_index]
name = exception[0]
message = exception[1]
params = exception[2]
if ':' in name:
exn_id, name = name.split(':', 2)
exn_id = int(exn_id)
else:
exn_id = 0
lines.append("{}({}): {}".format(name, exn_id, message.format(*params)))
zipped.append(((exception[3], exception[4], exception[5], exception[6],
None, []), None))
for ((filename, line, column, function, address, inlined), sp) in zipped:
# backtrace of nested exceptions may be discontinuous
# but the stack pointer must increase monotonically
if sp is not None and sp <= last_sp:
continue
last_sp = sp
for record in reversed(inlined):
lines += self.append_backtrace(record, True)
lines += self.append_backtrace((filename, line, column, function,
address))
lines.append("Traceback (most recent call first):")
return "\n".join(reversed(lines))
def __str__(self):
tracebacks = [self.single_traceback(i) for i in range(len(self.exceptions))]
traceback_str = ('\n\nDuring handling of the above exception, ' +
'another exception occurred:\n\n').join(tracebacks)
return 'Core Device Traceback:\n' +\
traceback_str +\
'\n\nEnd of Core Device Traceback\n'
class InternalError(Exception):
"""Raised when the runtime encounters an internal error condition."""
artiq_builtin = True
class CacheError(Exception):
"""Raised when putting a value into a cache row would violate memory safety."""
artiq_builtin = True
class RTIOUnderflow(Exception):
"""Raised when the CPU or DMA core fails to submit a RTIO event early
enough (with respect to the event's timestamp).
The offending event is discarded and the RTIO core keeps operating.
"""
artiq_builtin = True
class RTIOOverflow(Exception):
"""Raised when at least one event could not be registered into the RTIO
input FIFO because it was full (CPU not reading fast enough).
This does not interrupt operations further than cancelling the current
read attempt and discarding some events. Reading can be reattempted after
the exception is caught, and events will be partially retrieved.
"""
artiq_builtin = True
class RTIODestinationUnreachable(Exception):
"""Raised with a RTIO operation could not be completed due to a DRTIO link
being down.
"""
artiq_builtin = True
class DMAError(Exception):
"""Raised when performing an invalid DMA operation."""
artiq_builtin = True
class ClockFailure(Exception):
"""Raised when RTIO PLL has lost lock."""
class I2CError(Exception):
"""Raised when a I2C transaction fails."""
pass
class SPIError(Exception):
"""Raised when a SPI transaction fails."""
pass