EventNotifier right now cannot be used as an inter-thread communication
primitive. It only works if something else (the kernel) sets the eventfd.
Add a primitive to signal an EventNotifier that another thread is waiting
on.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
return e->fd;
}
+int event_notifier_set(EventNotifier *e)
+{
+ uint64_t value = 1;
+ int r = write(e->fd, &value, sizeof(value));
+ return r == sizeof(value);
+}
+
int event_notifier_test_and_clear(EventNotifier *e)
{
uint64_t value;
int event_notifier_init(EventNotifier *, int active);
void event_notifier_cleanup(EventNotifier *);
int event_notifier_get_fd(EventNotifier *);
+int event_notifier_set(EventNotifier *);
int event_notifier_test_and_clear(EventNotifier *);
int event_notifier_test(EventNotifier *);