static void qemu_mod_timer_ns(QEMUTimer *ts, int64_t expire_time) { QEMUTimer **pt, *t; qemu_del_timer(ts); /* add the timer in the sorted list */ /* NOTE: this code must be signal safe because qemu_timer_expired() can be called from a signal. */ pt = &active_timers[ts->clock->type]; for(;;) { t = *pt; if (!t) break; if (t->expire_time > expire_time) break; pt = &t->next; } ts->expire_time = expire_time; ts->next = *pt; *pt = ts; /* Rearm if necessary */ if (pt == &active_timers[ts->clock->type]) { if (!alarm_timer->pending) { qemu_rearm_alarm_timer(alarm_timer); } /* Interrupt execution to force deadline recalculation. */ if (use_icount) qemu_notify_event(); } }