/* Run a specific sighandler from the top of the sigdata stack. The 'info'
* struct is prepopulated before the call is triggered as the result of a
* reflected fault. */
static void __run_sighandler()
{
struct pthread_tcb *me = pthread_self();
__sigdelset(&me->sigpending, me->sigdata->info.si_signo);
trigger_posix_signal(me->sigdata->info.si_signo,
&me->sigdata->info,
&me->sigdata->u_ctx);
uthread_yield(FALSE, __exit_sighandler_cb, 0);
}
/* This is the catch all akaros event->posix signal handler. All posix signals
* are received in a single akaros event type. They are then dispatched from
* this function to their proper posix signal handler */
static void handle_event(struct event_msg *ev_msg, unsigned int ev_type,
void *data)
{
int sig_nr;
struct siginfo info = {0};
info.si_code = SI_USER;
assert(ev_msg);
sig_nr = ev_msg->ev_arg1;
trigger_posix_signal(sig_nr, &info, 0);
}
/* Run through all pending sighandlers and trigger them with a NULL info field.
* These handlers are triggered as the result of a pthread_kill(), and thus
* don't require individual 'info' structs. */
static void __run_pending_sighandlers()
{
struct pthread_tcb *me = pthread_self();
sigset_t andset = me->sigpending & (~me->sigmask);
for (int i = 1; i < _NSIG; i++) {
if (__sigismember(&andset, i)) {
__sigdelset(&me->sigpending, i);
trigger_posix_signal(i, NULL, &me->sigdata->u_ctx);
}
}
uthread_yield(FALSE, __exit_sighandler_cb, 0);
}