diff options
Diffstat (limited to 'qemu-aio.h')
| -rw-r--r-- | qemu-aio.h | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/qemu-aio.h b/qemu-aio.h index 27a7e21220..dc416a5239 100644 --- a/qemu-aio.h +++ b/qemu-aio.h @@ -16,6 +16,7 @@ #include "qemu-common.h" #include "qemu-char.h" +#include "event_notifier.h" typedef struct BlockDriverAIOCB BlockDriverAIOCB; typedef void BlockDriverCompletionFunc(void *opaque, int ret); @@ -39,7 +40,7 @@ void *qemu_aio_get(AIOPool *pool, BlockDriverState *bs, void qemu_aio_release(void *p); /* Returns 1 if there are still outstanding AIO requests; 0 otherwise */ -typedef int (AioFlushHandler)(void *opaque); +typedef int (AioFlushEventNotifierHandler)(EventNotifier *e); /* Flush any pending AIO operation. This function will block until all * outstanding AIO operations have been completed or cancelled. */ @@ -53,6 +54,10 @@ void qemu_aio_flush(void); * Return whether there is still any pending AIO operation. */ bool qemu_aio_wait(void); +#ifdef CONFIG_POSIX +/* Returns 1 if there are still outstanding AIO requests; 0 otherwise */ +typedef int (AioFlushHandler)(void *opaque); + /* Register a file descriptor and associated callbacks. Behaves very similarly * to qemu_set_fd_handler2. Unlike qemu_set_fd_handler2, these callbacks will * be invoked when using either qemu_aio_wait() or qemu_aio_flush(). @@ -65,5 +70,17 @@ void qemu_aio_set_fd_handler(int fd, IOHandler *io_write, AioFlushHandler *io_flush, void *opaque); +#endif + +/* Register an event notifier and associated callbacks. Behaves very similarly + * to event_notifier_set_handler. Unlike event_notifier_set_handler, these callbacks + * will be invoked when using either qemu_aio_wait() or qemu_aio_flush(). + * + * Code that invokes AIO completion functions should rely on this function + * instead of event_notifier_set_handler. + */ +void qemu_aio_set_event_notifier(EventNotifier *notifier, + EventNotifierHandler *io_read, + AioFlushEventNotifierHandler *io_flush); #endif |