| 1 | /* |
| 2 | * Data structures representing asynchronous I/O operations |
| 3 | * |
| 4 | * Copyright IBM, Corp. 2008 |
| 5 | * |
| 6 | * Authors: |
| 7 | * Anthony Liguori <aliguori@us.ibm.com> |
| 8 | * |
| 9 | * This work is licensed under the terms of the GNU GPL, version 2. See |
| 10 | * the COPYING file in the top-level directory. |
| 11 | * |
| 12 | */ |
| 13 | |
| 14 | #ifndef QEMU_AIOCB_H |
| 15 | #define QEMU_AIOCB_H |
| 16 | |
| 17 | typedef struct BlockAIOCB BlockAIOCB; |
| 18 | typedef void BlockCompletionFunc(void *opaque, int ret); |
| 19 | |
| 20 | typedef struct AIOCBInfo { |
| 21 | void (*cancel_async)(BlockAIOCB *acb); |
| 22 | size_t aiocb_size; |
| 23 | } AIOCBInfo; |
| 24 | |
| 25 | struct BlockAIOCB { |
| 26 | const AIOCBInfo *aiocb_info; |
| 27 | BlockDriverState *bs; |
| 28 | BlockCompletionFunc *cb; |
| 29 | void *opaque; |
| 30 | int refcnt; |
| 31 | }; |
| 32 | |
| 33 | void *qemu_aio_get(const AIOCBInfo *aiocb_info, BlockDriverState *bs, |
| 34 | BlockCompletionFunc *cb, void *opaque); |
| 35 | void qemu_aio_unref(void *p); |
| 36 | void qemu_aio_ref(void *p); |
| 37 | |
| 38 | #endif |