vfio-pci: Extend reset

[qemu.git] / qemu-aio.h

diff --git a/qemu-aio.h b/qemu-aio.h
index 79678293ef8498e77c2b24df60198d0c56f278c4..bfdd35f02cfa6e61c09507f28c763af39022b498 100644 (file)
--- a/qemu-aio.h
+++ b/qemu-aio.h
@@ -17,6 +17,27 @@
 #include "qemu-common.h"
 #include "qemu-char.h"
 
+typedef struct BlockDriverAIOCB BlockDriverAIOCB;
+typedef void BlockDriverCompletionFunc(void *opaque, int ret);
+
+typedef struct AIOPool {
+    void (*cancel)(BlockDriverAIOCB *acb);
+    int aiocb_size;
+    BlockDriverAIOCB *free_aiocb;
+} AIOPool;
+
+struct BlockDriverAIOCB {
+    AIOPool *pool;
+    BlockDriverState *bs;
+    BlockDriverCompletionFunc *cb;
+    void *opaque;
+    BlockDriverAIOCB *next;
+};
+
+void *qemu_aio_get(AIOPool *pool, BlockDriverState *bs,
+                   BlockDriverCompletionFunc *cb, void *opaque);
+void qemu_aio_release(void *p);
+
 /* Returns 1 if there are still outstanding AIO requests; 0 otherwise */
 typedef int (AioFlushHandler)(void *opaque);
 
@@ -24,10 +45,13 @@ typedef int (AioFlushHandler)(void *opaque);
  * outstanding AIO operations have been completed or cancelled. */
 void qemu_aio_flush(void);
 
-/* Wait for a single AIO completion to occur.  This function will until a
- * single AIO opeartion has completed.  It is intended to be used as a looping
- * primative when simulating synchronous IO based on asynchronous IO. */
-void qemu_aio_wait(void);
+/* Wait for a single AIO completion to occur.  This function will wait
+ * until a single AIO event has completed and it will ensure something
+ * has moved before returning. This can issue new pending aio as
+ * result of executing I/O completion or bh callbacks.
+ *
+ * Return whether there is still any pending AIO operation.  */
+bool qemu_aio_wait(void);
 
 /* Register a file descriptor and associated callbacks.  Behaves very similarly
  * to qemu_set_fd_handler2.  Unlike qemu_set_fd_handler2, these callbacks will