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refactor install_signal_handlers() into its own function

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This commit is contained in:
asvitkine 2011-12-28 23:30:25 +00:00
parent 7930deea4d
commit d58da945c6
1 changed files with 58 additions and 51 deletions
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109
SheepShaver/src/Unix/main_unix.cpp
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@ -611,6 +611,62 @@ static bool load_mac_rom(void)
return true;
}
static bool install_signal_handlers(void)
{
char str[256];
#if !EMULATED_PPC
// Create and install stacks for signal handlers
sig_stack.ss_sp = malloc(SIG_STACK_SIZE);
D(bug("Signal stack at %p\n", sig_stack.ss_sp));
if (sig_stack.ss_sp == NULL) {
ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
return false;
}
sig_stack.ss_flags = 0;
sig_stack.ss_size = SIG_STACK_SIZE;
if (sigaltstack(&sig_stack, NULL) < 0) {
sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
ErrorAlert(str);
return false;
}
extra_stack.ss_sp = malloc(SIG_STACK_SIZE);
D(bug("Extra stack at %p\n", extra_stack.ss_sp));
if (extra_stack.ss_sp == NULL) {
ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
return false;
}
extra_stack.ss_flags = 0;
extra_stack.ss_size = SIG_STACK_SIZE;
// Install SIGSEGV and SIGBUS handlers
sigemptyset(&sigsegv_action.sa_mask); // Block interrupts during SEGV handling
sigaddset(&sigsegv_action.sa_mask, SIGUSR2);
sigsegv_action.sa_sigaction = sigsegv_handler;
sigsegv_action.sa_flags = SA_ONSTACK | SA_SIGINFO;
#ifdef HAVE_SIGNAL_SA_RESTORER
sigsegv_action.sa_restorer = NULL;
#endif
if (sigaction(SIGSEGV, &sigsegv_action, NULL) < 0) {
sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGSEGV", strerror(errno));
ErrorAlert(str);
return false;
}
if (sigaction(SIGBUS, &sigsegv_action, NULL) < 0) {
sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGBUS", strerror(errno));
ErrorAlert(str);
return false;
}
#else
// Install SIGSEGV handler for CPU emulator
if (!sigsegv_install_handler(sigsegv_handler)) {
sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGSEGV", strerror(errno));
ErrorAlert(str);
return false;
}
#endif
return true;
}
int main(int argc, char **argv)
{
char str[256];
@ -757,58 +813,9 @@ int main(int argc, char **argv)
mon_init();
#endif
#if !EMULATED_PPC
// Create and install stacks for signal handlers
sig_stack.ss_sp = malloc(SIG_STACK_SIZE);
D(bug("Signal stack at %p\n", sig_stack.ss_sp));
if (sig_stack.ss_sp == NULL) {
ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
// Install signal handlers
if (!install_signal_handlers())
goto quit;
}
sig_stack.ss_flags = 0;
sig_stack.ss_size = SIG_STACK_SIZE;
if (sigaltstack(&sig_stack, NULL) < 0) {
sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
ErrorAlert(str);
goto quit;
}
extra_stack.ss_sp = malloc(SIG_STACK_SIZE);
D(bug("Extra stack at %p\n", extra_stack.ss_sp));
if (extra_stack.ss_sp == NULL) {
ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
goto quit;
}
extra_stack.ss_flags = 0;
extra_stack.ss_size = SIG_STACK_SIZE;
#endif
#if !EMULATED_PPC
// Install SIGSEGV and SIGBUS handlers
sigemptyset(&sigsegv_action.sa_mask); // Block interrupts during SEGV handling
sigaddset(&sigsegv_action.sa_mask, SIGUSR2);
sigsegv_action.sa_sigaction = sigsegv_handler;
sigsegv_action.sa_flags = SA_ONSTACK | SA_SIGINFO;
#ifdef HAVE_SIGNAL_SA_RESTORER
sigsegv_action.sa_restorer = NULL;
#endif
if (sigaction(SIGSEGV, &sigsegv_action, NULL) < 0) {
sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGSEGV", strerror(errno));
ErrorAlert(str);
goto quit;
}
if (sigaction(SIGBUS, &sigsegv_action, NULL) < 0) {
sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGBUS", strerror(errno));
ErrorAlert(str);
goto quit;
}
#else
// Install SIGSEGV handler for CPU emulator
if (!sigsegv_install_handler(sigsegv_handler)) {
sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGSEGV", strerror(errno));
ErrorAlert(str);
goto quit;
}
#endif
// Initialize VM system
vm_init();