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Annotation of qemu/block/raw-posix-aio.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * QEMU Posix block I/O backend AIO support
        !             3:  *
        !             4:  * Copyright IBM, Corp. 2008
        !             5:  *
        !             6:  * Authors:
        !             7:  *  Anthony Liguori   <[email protected]>
        !             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: #ifndef QEMU_RAW_POSIX_AIO_H
        !            14: #define QEMU_RAW_POSIX_AIO_H
        !            15: 
        !            16: /* AIO request types */
        !            17: #define QEMU_AIO_READ         0x0001
        !            18: #define QEMU_AIO_WRITE        0x0002
        !            19: #define QEMU_AIO_IOCTL        0x0004
        !            20: #define QEMU_AIO_FLUSH        0x0008
        !            21: #define QEMU_AIO_TYPE_MASK \
        !            22:        (QEMU_AIO_READ|QEMU_AIO_WRITE|QEMU_AIO_IOCTL|QEMU_AIO_FLUSH)
        !            23: 
        !            24: /* AIO flags */
        !            25: #define QEMU_AIO_MISALIGNED   0x1000
        !            26: 
        !            27: 
        !            28: /* posix-aio-compat.c - thread pool based implementation */
        !            29: int paio_init(void);
        !            30: BlockDriverAIOCB *paio_submit(BlockDriverState *bs, int fd,
        !            31:         int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
        !            32:         BlockDriverCompletionFunc *cb, void *opaque, int type);
        !            33: BlockDriverAIOCB *paio_ioctl(BlockDriverState *bs, int fd,
        !            34:         unsigned long int req, void *buf,
        !            35:         BlockDriverCompletionFunc *cb, void *opaque);
        !            36: 
        !            37: /* linux-aio.c - Linux native implementation */
        !            38: void *laio_init(void);
        !            39: BlockDriverAIOCB *laio_submit(BlockDriverState *bs, void *aio_ctx, int fd,
        !            40:         int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
        !            41:         BlockDriverCompletionFunc *cb, void *opaque, int type);
        !            42: 
        !            43: #endif /* QEMU_RAW_POSIX_AIO_H */

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