def reg_sighandler(self,
debug: bool = False,
buf: Type.BufT = Type.BufT.DEBUG) -> None:
if debug:
Printer.Printer.inst().buf(
Printer.Printer.inst().f_title('signal handler info'), buf)
Printer.Printer.inst().buf('@target: ', buf, indent=2)
for i in range(len(self.__sig_handler)):
Printer.Printer.inst().buf(
f'[{i}] {self.__sig_handler[i].brief}({self.__sig_handler[i].sig})',
buf,
indent=4)
Printer.Printer.inst().buf_newline(buf)
Printer.Printer.inst().buf(
Printer.Printer.inst().f_title('registering signal handler'),
buf)
for handler in self.__sig_handler:
Printer.Printer.inst().buf(
Printer.Printer.inst().f_prog(
f'Registering {handler.brief} handler'), buf, False, 2)
try:
signal.signal(handler.sig, handler.handler)
except OSError as os_err:
Printer.Printer.inst().buf(
Printer.Printer.inst().f_col('fail', Type.Col.RED),
buf)
raise Error.SysErr(Type.SysErrT.REG_FAIL,
sig=handler.brief,
err_str=os_err.strerror)
else:
Printer.Printer.inst().buf(
Printer.Printer.inst().f_col('done', Type.Col.BLUE),
buf)
Printer.Printer.inst().buf(f'@handler: {handler.handler}',
buf,
indent=4)
Printer.Printer.inst().buf_newline(buf)
else:
for handler in self.__sig_handler:
try:
signal.signal(handler.sig, handler.handler)
except OSError as os_err:
raise Error.SysErr(Type.SysErrT.REG_FAIL,
sig=handler.brief,
err_str=os_err.strerror)
def timeout(lim: int) -> None:
try:
signal.signal(signal.SIGALRM, sigalrm_handler)
except OSError as os_err:
raise Error.SysErr(Type.SysErrT.REG_FAIL,
sig='SIGALRM',
err_str=os_err.strerror)
if lim > 0:
signal.alarm(lim)
try:
yield
except TimeoutError:
pass
finally:
signal.alarm(0)
try:
signal.signal(signal.SIGALRM, signal.SIG_IGN)
except OSError as os_err:
raise Error.SysErr(Type.SysErrT.UNREG_FAIL,
sig='SIGALRM',
err_str=os_err.strerror)
def sigalrm_handler(sig, frame) -> None:
raise Error.SysErr(Type.SysErrT.TIMEOUT)
