104 static void crash_handler(int sig, siginfo_t* info, void* ucVoid) {
 105   // unmask current signal
 106   sigset_t newset;
 107   sigemptyset(&newset);
 108   sigaddset(&newset, sig);
 109   // also unmask other synchronous signals
 110   for (int i = 0; i < NUM_SIGNALS; i++) {
 111     sigaddset(&newset, SIGNALS[i]);
 112   }
 113   pthread_sigmask(SIG_UNBLOCK, &newset, NULL);
 114 
 115   // support safefetch faults in error handling
 116   ucontext_t* const uc = (ucontext_t*) ucVoid;
 117   address const pc = uc ? os::Linux::ucontext_get_pc(uc) : NULL;
 118 
 119   if (uc && pc && StubRoutines::is_safefetch_fault(pc)) {
 120     os::Linux::ucontext_set_pc(uc, StubRoutines::continuation_for_safefetch_fault(pc));
 121     return;
 122   }
 123 
 124   VMError err(NULL, sig, pc, info, ucVoid);
 125   err.report_and_die();
 126 }
 127 
 128 void VMError::reset_signal_handlers() {
 129   // install signal handlers for all synchronous program error signals
 130   sigset_t newset;
 131   sigemptyset(&newset);
 132 
 133   for (int i = 0; i < NUM_SIGNALS; i++) {
 134     save_signal(i, SIGNALS[i]);
 135     os::signal(SIGNALS[i], CAST_FROM_FN_PTR(void *, crash_handler));
 136     sigaddset(&newset, SIGNALS[i]);
 137   }
 138   pthread_sigmask(SIG_UNBLOCK, &newset, NULL);
 139 
 140 }

 104 static void crash_handler(int sig, siginfo_t* info, void* ucVoid) {
 105   // unmask current signal
 106   sigset_t newset;
 107   sigemptyset(&newset);
 108   sigaddset(&newset, sig);
 109   // also unmask other synchronous signals
 110   for (int i = 0; i < NUM_SIGNALS; i++) {
 111     sigaddset(&newset, SIGNALS[i]);
 112   }
 113   pthread_sigmask(SIG_UNBLOCK, &newset, NULL);
 114 
 115   // support safefetch faults in error handling
 116   ucontext_t* const uc = (ucontext_t*) ucVoid;
 117   address const pc = uc ? os::Linux::ucontext_get_pc(uc) : NULL;
 118 
 119   if (uc && pc && StubRoutines::is_safefetch_fault(pc)) {
 120     os::Linux::ucontext_set_pc(uc, StubRoutines::continuation_for_safefetch_fault(pc));
 121     return;
 122   }
 123 
 124   VMError::report_and_die(NULL, sig, pc, info, ucVoid);

 125 }
 126 
 127 void VMError::reset_signal_handlers() {
 128   // install signal handlers for all synchronous program error signals
 129   sigset_t newset;
 130   sigemptyset(&newset);
 131 
 132   for (int i = 0; i < NUM_SIGNALS; i++) {
 133     save_signal(i, SIGNALS[i]);
 134     os::signal(SIGNALS[i], CAST_FROM_FN_PTR(void *, crash_handler));
 135     sigaddset(&newset, SIGNALS[i]);
 136   }
 137   pthread_sigmask(SIG_UNBLOCK, &newset, NULL);
 138 
 139 }