4444 
4445   st->print(", sa_flags=");
4446   os::Posix::print_sa_flags(st, sa.sa_flags);
4447 
4448   // Check: is it our handler?
4449   if(handler == CAST_FROM_FN_PTR(address, (sa_sigaction_t)signalHandler) ||
4450      handler == CAST_FROM_FN_PTR(address, (sa_sigaction_t)SR_handler)) {
4451     // It is our signal handler
4452     // check for flags, reset system-used one!
4453     if((int)sa.sa_flags != os::Linux::get_our_sigflags(sig)) {
4454       st->print(
4455                 ", flags was changed from " PTR32_FORMAT ", consider using jsig library",
4456                 os::Linux::get_our_sigflags(sig));
4457     }
4458   }
4459   st->cr();
4460 }
4461 
4462 
4463 #define DO_SIGNAL_CHECK(sig) \
4464   if (!sigismember(&check_signal_done, sig)) \
4465     os::Linux::check_signal_handler(sig)
4466 
4467 // This method is a periodic task to check for misbehaving JNI applications
4468 // under CheckJNI, we can add any periodic checks here
4469 
4470 void os::run_periodic_checks() {
4471 
4472   if (check_signals == false) return;
4473 
4474   // SEGV and BUS if overridden could potentially prevent
4475   // generation of hs*.log in the event of a crash, debugging
4476   // such a case can be very challenging, so we absolutely
4477   // check the following for a good measure:
4478   DO_SIGNAL_CHECK(SIGSEGV);
4479   DO_SIGNAL_CHECK(SIGILL);
4480   DO_SIGNAL_CHECK(SIGFPE);
4481   DO_SIGNAL_CHECK(SIGBUS);
4482   DO_SIGNAL_CHECK(SIGPIPE);
4483   DO_SIGNAL_CHECK(SIGXFSZ);
4484 #if defined(PPC64)

4444 
4445   st->print(", sa_flags=");
4446   os::Posix::print_sa_flags(st, sa.sa_flags);
4447 
4448   // Check: is it our handler?
4449   if(handler == CAST_FROM_FN_PTR(address, (sa_sigaction_t)signalHandler) ||
4450      handler == CAST_FROM_FN_PTR(address, (sa_sigaction_t)SR_handler)) {
4451     // It is our signal handler
4452     // check for flags, reset system-used one!
4453     if((int)sa.sa_flags != os::Linux::get_our_sigflags(sig)) {
4454       st->print(
4455                 ", flags was changed from " PTR32_FORMAT ", consider using jsig library",
4456                 os::Linux::get_our_sigflags(sig));
4457     }
4458   }
4459   st->cr();
4460 }
4461 
4462 
4463 #define DO_SIGNAL_CHECK(sig) \
4464   if (!sigismember(&check_signal_done, sig) && (sig != SIGINT || isatty(fileno(stdin)))) \
4465     os::Linux::check_signal_handler(sig)
4466 
4467 // This method is a periodic task to check for misbehaving JNI applications
4468 // under CheckJNI, we can add any periodic checks here
4469 
4470 void os::run_periodic_checks() {
4471 
4472   if (check_signals == false) return;
4473 
4474   // SEGV and BUS if overridden could potentially prevent
4475   // generation of hs*.log in the event of a crash, debugging
4476   // such a case can be very challenging, so we absolutely
4477   // check the following for a good measure:
4478   DO_SIGNAL_CHECK(SIGSEGV);
4479   DO_SIGNAL_CHECK(SIGILL);
4480   DO_SIGNAL_CHECK(SIGFPE);
4481   DO_SIGNAL_CHECK(SIGBUS);
4482   DO_SIGNAL_CHECK(SIGPIPE);
4483   DO_SIGNAL_CHECK(SIGXFSZ);
4484 #if defined(PPC64)