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src/hotspot/os/posix/vmError_posix.cpp

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 115   os::Posix::unblock_thread_signal_mask(&newset);
 116 
 117   // support safefetch faults in error handling
 118   ucontext_t* const uc = (ucontext_t*) ucVoid;
 119   address pc = (uc != NULL) ? os::Posix::ucontext_get_pc(uc) : NULL;
 120 
 121   // Correct pc for SIGILL, SIGFPE (see JDK-8176872)
 122   if (sig == SIGILL || sig == SIGFPE) {
 123     pc = (address) info->si_addr;
 124   }
 125 
 126   // Needed to make it possible to call SafeFetch.. APIs in error handling.
 127   if (uc && pc && StubRoutines::is_safefetch_fault(pc)) {
 128     os::Posix::ucontext_set_pc(uc, StubRoutines::continuation_for_safefetch_fault(pc));
 129     return;
 130   }
 131 
 132   // Needed because asserts may happen in error handling too.
 133 #ifdef CAN_SHOW_REGISTERS_ON_ASSERT
 134   if ((sig == SIGSEGV || sig == SIGBUS) && info != NULL && info->si_addr == g_assert_poison) {
 135     if (handle_assert_poison_fault(ucVoid, info->si_addr)) {
 136       return;
 137     }
 138   }
 139 #endif // CAN_SHOW_REGISTERS_ON_ASSERT
 140 
 141   VMError::report_and_die(NULL, sig, pc, info, ucVoid);
 142 }
 143 
 144 void VMError::reset_signal_handlers() {
 145   // install signal handlers for all synchronous program error signals
 146   sigset_t newset;
 147   sigemptyset(&newset);
 148 
 149   for (int i = 0; i < NUM_SIGNALS; i++) {
 150     save_signal(i, SIGNALS[i]);
 151     os::signal(SIGNALS[i], CAST_FROM_FN_PTR(void *, crash_handler));
 152     sigaddset(&newset, SIGNALS[i]);
 153   }
 154   os::Posix::unblock_thread_signal_mask(&newset);
 155 
 156 }
 157 


 115   os::Posix::unblock_thread_signal_mask(&newset);
 116 
 117   // support safefetch faults in error handling
 118   ucontext_t* const uc = (ucontext_t*) ucVoid;
 119   address pc = (uc != NULL) ? os::Posix::ucontext_get_pc(uc) : NULL;
 120 
 121   // Correct pc for SIGILL, SIGFPE (see JDK-8176872)
 122   if (sig == SIGILL || sig == SIGFPE) {
 123     pc = (address) info->si_addr;
 124   }
 125 
 126   // Needed to make it possible to call SafeFetch.. APIs in error handling.
 127   if (uc && pc && StubRoutines::is_safefetch_fault(pc)) {
 128     os::Posix::ucontext_set_pc(uc, StubRoutines::continuation_for_safefetch_fault(pc));
 129     return;
 130   }
 131 
 132   // Needed because asserts may happen in error handling too.
 133 #ifdef CAN_SHOW_REGISTERS_ON_ASSERT
 134   if ((sig == SIGSEGV || sig == SIGBUS) && info != NULL && info->si_addr == g_assert_poison) {
 135     handle_assert_poison_fault(ucVoid, info->si_addr);
 136     return;

 137   }
 138 #endif // CAN_SHOW_REGISTERS_ON_ASSERT
 139 
 140   VMError::report_and_die(NULL, sig, pc, info, ucVoid);
 141 }
 142 
 143 void VMError::reset_signal_handlers() {
 144   // install signal handlers for all synchronous program error signals
 145   sigset_t newset;
 146   sigemptyset(&newset);
 147 
 148   for (int i = 0; i < NUM_SIGNALS; i++) {
 149     save_signal(i, SIGNALS[i]);
 150     os::signal(SIGNALS[i], CAST_FROM_FN_PTR(void *, crash_handler));
 151     sigaddset(&newset, SIGNALS[i]);
 152   }
 153   os::Posix::unblock_thread_signal_mask(&newset);
 154 
 155 }
 156 
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