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import _signal
from _signal import *
from functools import wraps as _wraps
from enum import IntEnum as _IntEnum
_globals = globals()
Signals = _IntEnum(
'Signals',
{name: value for name, value in _globals.items()
if name.isupper()
and (name.startswith('SIG') and not name.startswith('SIG_'))
or name.startswith('CTRL_')})
class Handlers(_IntEnum):
SIG_DFL = _signal.SIG_DFL
SIG_IGN = _signal.SIG_IGN
_globals.update(Signals.__members__)
_globals.update(Handlers.__members__)
if 'pthread_sigmask' in _globals:
class Sigmasks(_IntEnum):
SIG_BLOCK = _signal.SIG_BLOCK
SIG_UNBLOCK = _signal.SIG_UNBLOCK
SIG_SETMASK = _signal.SIG_SETMASK
_globals.update(Sigmasks.__members__)
def _int_to_enum(value, enum_klass):
"""Convert a numeric value to an IntEnum member.
If it's not a known member, return the numeric value itself.
"""
try:
return enum_klass(value)
except ValueError:
return value
def _enum_to_int(value):
"""Convert an IntEnum member to a numeric value.
If it's not a IntEnum member return the value itself.
"""
try:
return int(value)
except (ValueError, TypeError):
return value
@_wraps(_signal.signal)
def signal(signalnum, handler):
handler = _signal.signal(_enum_to_int(signalnum), _enum_to_int(handler))
return _int_to_enum(handler, Handlers)
@_wraps(_signal.getsignal)
def getsignal(signalnum):
handler = _signal.getsignal(signalnum)
return _int_to_enum(handler, Handlers)
if 'pthread_sigmask' in _globals:
@_wraps(_signal.pthread_sigmask)
def pthread_sigmask(how, mask):
sigs_set = _signal.pthread_sigmask(how, mask)
return set(_int_to_enum(x, Signals) for x in sigs_set)
pthread_sigmask.__doc__ = _signal.pthread_sigmask.__doc__
if 'sigpending' in _globals:
@_wraps(_signal.sigpending)
def sigpending():
sigs = _signal.sigpending()
return set(_int_to_enum(x, Signals) for x in sigs)
if 'sigwait' in _globals:
@_wraps(_signal.sigwait)
def sigwait(sigset):
retsig = _signal.sigwait(sigset)
return _int_to_enum(retsig, Signals)
sigwait.__doc__ = _signal.sigwait
del _globals, _wraps
|
