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event_notifier: add event_notifier_set_handler

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Win32 event notifiers are not file descriptors, so they will not be able
to use qemu_set_fd_handler.  But even if for now we only have a POSIX
version of EventNotifier, we can add a specific function that wraps
the call.

The wrapper passes the EventNotifier as the opaque value so that it will
be used with container_of.

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 17:16:28 +02:00 committed by Avi Kivity
parent 753d5e14c4
commit 6bf819f0a2
2 changed files with 10 additions and 0 deletions
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7
event_notifier.c
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@ -12,6 +12,7 @@
#include "qemu-common.h"
#include "event_notifier.h"
#include "qemu-char.h"
#ifdef CONFIG_EVENTFD
#include <sys/eventfd.h>
@ -45,6 +46,12 @@ int event_notifier_get_fd(EventNotifier *e)
return e->fd;
}
int event_notifier_set_handler(EventNotifier *e,
EventNotifierHandler *handler)
{
return qemu_set_fd_handler(e->fd, (IOHandler *)handler, NULL, e);
}
int event_notifier_set(EventNotifier *e)
{
uint64_t value = 1;

3
event_notifier.h
View File

@ -19,11 +19,14 @@ struct EventNotifier {
int fd;
};
typedef void EventNotifierHandler(EventNotifier *);
void event_notifier_init_fd(EventNotifier *, int fd);
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_set_handler(EventNotifier *, EventNotifierHandler *);
#endif