/* * 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 */