224 static bool GetHandlingSignal(int signo) {  in GetHandlingSignal()  argument
225   size_t bit_idx = signo - 1;  in GetHandlingSignal()
233 static bool SetHandlingSignal(int signo, bool value) {  in SetHandlingSignal()  argument
236   size_t bit_idx = signo - 1;  in SetHandlingSignal()
255   ScopedHandlingSignal(int signo, bool set)  in ScopedHandlingSignal()  argument
256       : signo_(signo),  in ScopedHandlingSignal()
257         original_value_(set ? SetHandlingSignal(signo, true) : GetHandlingSignal(signo)) {}  in ScopedHandlingSignal()
277   void Claim(int signo) {  in Claim()  argument
279       Register(signo);  in Claim()
285   void Register(int signo) {  in Register()  argument
299     linked_sigaction64(signo, &handler_action, &action_);  in Register()
300     linked_sigaction64(signo, nullptr, &handler_action);  in Register()
302     linked_sigaction(signo, &handler_action, &action_);  in Register()
303     linked_sigaction(signo, nullptr, &handler_action);  in Register()
405   static void Handler(int signo, siginfo_t* siginfo, void*);
430 void SignalChain::Handler(int signo, siginfo_t* siginfo, void* ucontext_raw) {  in Handler()  argument
433   if (!GetHandlingSignal(signo)) {  in Handler()
434     for (const auto& handler : chains[signo].special_handlers_) {  in Handler()
446       ScopedHandlingSignal restorer(signo, !handler_noreturn);  in Handler()
448       if (handler.sc_sigaction(signo, siginfo, ucontext_raw)) {  in Handler()
459     size_t bit_idx = signo - 1;  in Handler()
467           signo,  in Handler()
489   if (android_handle_signal != nullptr && android_handle_signal(signo, siginfo, ucontext_raw)) {  in Handler()
494   int handler_flags = chains[signo].action_.sa_flags;  in Handler()
498   sigorset(&mask, &ucontext->uc_sigmask64, &chains[signo].action_.sa_mask);  in Handler()
501   sigorset(&mask, &ucontext->uc_sigmask, &chains[signo].action_.sa_mask);  in Handler()
504     sigaddset(&mask, signo);  in Handler()
518         (signo == SIGILL || signo == SIGFPE || signo == SIGSEGV ||  in Handler()
519          signo == SIGBUS || signo == SIGTRAP) &&  in Handler()
521         !(signo == SIGTRAP && siginfo->si_code == TRAP_HWBKPT)) {  in Handler()
525     chains[signo].action_.sa_sigaction(signo, siginfo, ucontext_raw);  in Handler()
527     auto handler = chains[signo].action_.sa_handler;  in Handler()
535       LogError("reverting to SIG_DFL handler for signal %d, ucontext %p", signo, ucontext);  in Handler()
539       linked_sigaction(signo, &dfl, nullptr);  in Handler()
542       handler(signo);  in Handler()
600 extern "C" sighandler_t signal(int signo, sighandler_t handler) {  in signal()  argument
603   if (signo <= 0 || signo >= _NSIG) {  in signal()
616   if (chains[signo].IsClaimed()) {  in signal()
618         chains[signo].GetAction<struct sigaction>().sa_handler);  in signal()
619     chains[signo].SetAction(&sa);  in signal()
625   if (linked_sigaction(signo, &sa, &sa) == -1) {  in signal()
633 extern "C" sighandler_t bsd_signal(int signo, sighandler_t handler) {  in bsd_signal()  argument
636   return signal(signo, handler);  in bsd_signal()