signal_name
string += signal_name(info.si_signo);
std::string signal_name(int signal);
signal_name(signalNumber).c_str(), strsignal(signalNumber),
message.origin.thread, signal_name(signalNumber).c_str(),
signal_name(fSignal));
"handler: %p", fSignal, signal_name(fSignal), fHandler);
signal_name(fSignal), fFlags);
fSignal, signal_name(fSignal), fAction.sa_handler,