| /* |
| * QEMU Posix block I/O backend AIO support |
| * |
| * Copyright IBM, Corp. 2008 |
| * |
| * Authors: |
| * Anthony Liguori <aliguori@us.ibm.com> |
| * |
| * This work is licensed under the terms of the GNU GPL, version 2. See |
| * the COPYING file in the top-level directory. |
| * |
| */ |
| #ifndef QEMU_RAW_POSIX_AIO_H |
| #define QEMU_RAW_POSIX_AIO_H |
| |
| /* AIO request types */ |
| #define QEMU_AIO_READ 0x0001 |
| #define QEMU_AIO_WRITE 0x0002 |
| #define QEMU_AIO_IOCTL 0x0004 |
| #define QEMU_AIO_FLUSH 0x0008 |
| #define QEMU_AIO_TYPE_MASK \ |
| (QEMU_AIO_READ|QEMU_AIO_WRITE|QEMU_AIO_IOCTL|QEMU_AIO_FLUSH) |
| |
| /* AIO flags */ |
| #define QEMU_AIO_MISALIGNED 0x1000 |
| |
| |
| /* posix-aio-compat.c - thread pool based implementation */ |
| int paio_init(void); |
| BlockDriverAIOCB *paio_submit(BlockDriverState *bs, int fd, |
| int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, |
| BlockDriverCompletionFunc *cb, void *opaque, int type); |
| BlockDriverAIOCB *paio_ioctl(BlockDriverState *bs, int fd, |
| unsigned long int req, void *buf, |
| BlockDriverCompletionFunc *cb, void *opaque); |
| |
| /* linux-aio.c - Linux native implementation */ |
| void *laio_init(void); |
| BlockDriverAIOCB *laio_submit(BlockDriverState *bs, void *aio_ctx, int fd, |
| int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, |
| BlockDriverCompletionFunc *cb, void *opaque, int type); |
| |
| #endif /* QEMU_RAW_POSIX_AIO_H */ |
