-#ifdef WIN32_AIO
-static void raw_aio_cb(void *opaque)
-{
- RawAIOCB *acb = opaque;
- BlockDriverState *bs = acb->common.bs;
- BDRVRawState *s = bs->opaque;
- DWORD ret_count;
- int ret;
-
- ret = GetOverlappedResult(s->hfile, &acb->ov, &ret_count, TRUE);
- if (!ret || ret_count != acb->count) {
- acb->common.cb(acb->common.opaque, -EIO);
- } else {
- acb->common.cb(acb->common.opaque, 0);
- }
-}
-
-static RawAIOCB *raw_aio_setup(BlockDriverState *bs,
- int64_t sector_num, uint8_t *buf, int nb_sectors,
- BlockDriverCompletionFunc *cb, void *opaque)
-{
- RawAIOCB *acb;
- int64_t offset;
-
- acb = qemu_aio_get(bs, cb, opaque);
- if (acb->hEvent) {
- acb->hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
- if (!acb->hEvent) {
- qemu_aio_release(acb);
- return NULL;
- }
- }
- memset(&acb->ov, 0, sizeof(acb->ov));
- offset = sector_num * 512;
- acb->ov.Offset = offset;
- acb->ov.OffsetHigh = offset >> 32;
- acb->ov.hEvent = acb->hEvent;
- acb->count = nb_sectors * 512;
- qemu_add_wait_object(acb->ov.hEvent, raw_aio_cb, acb);
- return acb;
-}
-
-static BlockDriverAIOCB *raw_aio_read(BlockDriverState *bs,
- int64_t sector_num, uint8_t *buf, int nb_sectors,
- BlockDriverCompletionFunc *cb, void *opaque)
-{
- BDRVRawState *s = bs->opaque;
- RawAIOCB *acb;
- int ret;
-
- acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque);
- if (!acb)
- return NULL;
- ret = ReadFile(s->hfile, buf, acb->count, NULL, &acb->ov);
- if (!ret) {
- qemu_aio_release(acb);
- return NULL;
- }
- qemu_aio_release(acb);
- return (BlockDriverAIOCB *)acb;
-}
-
-static BlockDriverAIOCB *raw_aio_write(BlockDriverState *bs,
- int64_t sector_num, uint8_t *buf, int nb_sectors,
- BlockDriverCompletionFunc *cb, void *opaque)
-{
- BDRVRawState *s = bs->opaque;
- RawAIOCB *acb;
- int ret;
-
- acb = raw_aio_setup(bs, sector_num, buf, nb_sectors, cb, opaque);
- if (!acb)
- return NULL;
- ret = WriteFile(s->hfile, buf, acb->count, NULL, &acb->ov);
- if (!ret) {
- qemu_aio_release(acb);
- return NULL;
- }
- qemu_aio_release(acb);
- return (BlockDriverAIOCB *)acb;
-}
-
-static void raw_aio_cancel(BlockDriverAIOCB *blockacb)
-{
- RawAIOCB *acb = (RawAIOCB *)blockacb;
- BlockDriverState *bs = acb->common.bs;
- BDRVRawState *s = bs->opaque;
-
- qemu_del_wait_object(acb->ov.hEvent, raw_aio_cb, acb);
- /* XXX: if more than one async I/O it is not correct */
- CancelIo(s->hfile);
- qemu_aio_release(acb);
-}
-#endif /* #if WIN32_AIO */
-