337 static SignalChain chains[_NSIG + 1];  variable
345     for (const auto& handler : chains[signo].special_handlers_) {  in Handler()
371   int handler_flags = chains[signo].action_.sa_flags;  in Handler()
375   sigorset(&mask, &ucontext->uc_sigmask64, &chains[signo].action_.sa_mask);  in Handler()
378   sigorset(&mask, &ucontext->uc_sigmask, &chains[signo].action_.sa_mask);  in Handler()
402     chains[signo].action_.sa_sigaction(signo, siginfo, ucontext_raw);  in Handler()
404     auto handler = chains[signo].action_.sa_handler;  in Handler()
433   if (chains[signal].IsClaimed()) {  in __sigaction()
434     SigactionType saved_action = chains[signal].GetAction<SigactionType>();  in __sigaction()
436       chains[signal].SetAction(new_action);  in __sigaction()
479   if (chains[signo].IsClaimed()) {  in signal()
481         chains[signo].GetAction<struct sigaction>().sa_handler);  in signal()
482     chains[signo].SetAction(&sa);  in signal()
520         if (chains[i].IsClaimed() && sigismember(&tmpset, i)) {  in __sigprocmask()
553   chains[signal].AddSpecialHandler(sa);  in AddSpecialSignalHandlerFn()
554   chains[signal].Claim(signal);  in AddSpecialSignalHandlerFn()
564   chains[signal].RemoveSpecialHandler(fn);  in RemoveSpecialSignalHandlerFn()
587     chains[signal].Register(signal);  in EnsureFrontOfChain()