From f197fe2b2c77259b6570620f288d905bfa38e2da Mon Sep 17 00:00:00 2001 From: Fam Zheng Date: Thu, 11 Sep 2014 13:41:08 +0800 Subject: block: Add refcnt in BlockDriverAIOCB This will be useful in synchronous cancel emulation with bdrv_aio_cancel_async. Signed-off-by: Fam Zheng Signed-off-by: Stefan Hajnoczi --- block.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) (limited to 'block.c') diff --git a/block.c b/block.c index bcd952a..7f73ff0 100644 --- a/block.c +++ b/block.c @@ -4891,13 +4891,23 @@ void *qemu_aio_get(const AIOCBInfo *aiocb_info, BlockDriverState *bs, acb->bs = bs; acb->cb = cb; acb->opaque = opaque; + acb->refcnt = 1; return acb; } +void qemu_aio_ref(void *p) +{ + BlockDriverAIOCB *acb = p; + acb->refcnt++; +} + void qemu_aio_release(void *p) { BlockDriverAIOCB *acb = p; - g_slice_free1(acb->aiocb_info->aiocb_size, acb); + assert(acb->refcnt > 0); + if (--acb->refcnt == 0) { + g_slice_free1(acb->aiocb_info->aiocb_size, acb); + } } /**************************************************************/ -- cgit v1.1