def set_sig_handler(self, sig, handler):
global _SigHandlers
global _SigSetHandled
signal.signal(sig, _SigHandler)
_SigHandlers[sig] = handler
pysigset.sigaddset(_SigSetHandled, sig)
def get_signalfd(self, sig, close_on_fork=True):
sigset = SIGSET()
sigaddset(sigset, sig)
sigprocmask(SIG_BLOCK, sigset, NULL)
fd = linuxfd.signalfd(signalset={sig}, nonBlocking=True)
if close_on_fork:
self._close_on_fork_fds.add(fd)
return fd
def release(self, fd):
# TODO: singledispatch
if fd not in self._close_on_fork_fds:
return
self._close_on_fork_fds.remove(fd)
fd.close()
if isinstance(fd, linuxfd.signalfd):
sigset = SIGSET()
for sig in fd.signals():
sigaddset(sigset, sig)
logger.debug('unblock sigset %s' % sigset)
sigprocmask(SIG_UNBLOCK, sigset, NULL)
def unmask_sigio(self):
sigemptyset(self.sigset)
sigaddset(self.sigset, signal.SIGIO)
sigprocmask(SIG_UNBLOCK, self.sigset, 0)