host_alarm_handler() is invoked from the signal processing thread
(currently the iothread). Previously we did processing in a real signal
handler with signalfd and therefore needed signal-safe timer code.
Today host_alarm_handler() just marks the alarm timer as expired/pending
and notifies the main loop using qemu_notify_event().
Therefore these outdated comments about signal safety can be dropped.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
{
QEMUTimer **pt, *t;
- /* NOTE: this code must be signal safe because
- timer_expired() can be called from a signal. */
pt = &ts->timer_list->active_timers;
for(;;) {
t = *pt;
timer_del(ts);
/* add the timer in the sorted list */
- /* NOTE: this code must be signal safe because
- timer_expired() can be called from a signal. */
pt = &ts->timer_list->active_timers;
for(;;) {
t = *pt;