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event_notifier: add event_notifier_set

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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>
This commit is contained in:
Paolo Bonzini 2012-07-05 17:16:22 +02:00 • committed by Avi Kivity
parent 5d62c43a17
commit 2ec10b952b
2 changed files with 8 additions and 0 deletions
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event_notifier.h
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@ -22,6 +22,7 @@ struct EventNotifier {
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 *);