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author | 2015-08-28 09:58:54 +0800 | |
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committer | 2015-09-01 12:44:00 +0800 | |
commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/block/raw-aio.h | |
parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/block/raw-aio.h')
-rw-r--r-- | qemu/block/raw-aio.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/qemu/block/raw-aio.h b/qemu/block/raw-aio.h new file mode 100644 index 000000000..31d791fe6 --- /dev/null +++ b/qemu/block/raw-aio.h @@ -0,0 +1,62 @@ +/* + * Declarations for AIO in the raw protocol + * + * 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. + * + * Contributions after 2012-01-13 are licensed under the terms of the + * GNU GPL, version 2 or (at your option) any later version. + */ +#ifndef QEMU_RAW_AIO_H +#define QEMU_RAW_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_DISCARD 0x0010 +#define QEMU_AIO_WRITE_ZEROES 0x0020 +#define QEMU_AIO_TYPE_MASK \ + (QEMU_AIO_READ|QEMU_AIO_WRITE|QEMU_AIO_IOCTL|QEMU_AIO_FLUSH| \ + QEMU_AIO_DISCARD|QEMU_AIO_WRITE_ZEROES) + +/* AIO flags */ +#define QEMU_AIO_MISALIGNED 0x1000 +#define QEMU_AIO_BLKDEV 0x2000 + + +/* linux-aio.c - Linux native implementation */ +#ifdef CONFIG_LINUX_AIO +void *laio_init(void); +void laio_cleanup(void *s); +BlockAIOCB *laio_submit(BlockDriverState *bs, void *aio_ctx, int fd, + int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, + BlockCompletionFunc *cb, void *opaque, int type); +void laio_detach_aio_context(void *s, AioContext *old_context); +void laio_attach_aio_context(void *s, AioContext *new_context); +void laio_io_plug(BlockDriverState *bs, void *aio_ctx); +void laio_io_unplug(BlockDriverState *bs, void *aio_ctx, bool unplug); +#endif + +#ifdef _WIN32 +typedef struct QEMUWin32AIOState QEMUWin32AIOState; +QEMUWin32AIOState *win32_aio_init(void); +void win32_aio_cleanup(QEMUWin32AIOState *aio); +int win32_aio_attach(QEMUWin32AIOState *aio, HANDLE hfile); +BlockAIOCB *win32_aio_submit(BlockDriverState *bs, + QEMUWin32AIOState *aio, HANDLE hfile, + int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, + BlockCompletionFunc *cb, void *opaque, int type); +void win32_aio_detach_aio_context(QEMUWin32AIOState *aio, + AioContext *old_context); +void win32_aio_attach_aio_context(QEMUWin32AIOState *aio, + AioContext *new_context); +#endif + +#endif /* QEMU_RAW_AIO_H */ |