56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
/*
|
|
* BlockAIOCB allocation
|
|
*
|
|
* Copyright (c) 2003-2017 Fabrice Bellard and other QEMU contributors
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "block/aio.h"
|
|
|
|
void *qemu_aio_get(const AIOCBInfo *aiocb_info, BlockDriverState *bs,
|
|
BlockCompletionFunc *cb, void *opaque)
|
|
{
|
|
BlockAIOCB *acb;
|
|
|
|
acb = g_malloc(aiocb_info->aiocb_size);
|
|
acb->aiocb_info = aiocb_info;
|
|
acb->bs = bs;
|
|
acb->cb = cb;
|
|
acb->opaque = opaque;
|
|
acb->refcnt = 1;
|
|
return acb;
|
|
}
|
|
|
|
void qemu_aio_ref(void *p)
|
|
{
|
|
BlockAIOCB *acb = p;
|
|
acb->refcnt++;
|
|
}
|
|
|
|
void qemu_aio_unref(void *p)
|
|
{
|
|
BlockAIOCB *acb = p;
|
|
assert(acb->refcnt > 0);
|
|
if (--acb->refcnt == 0) {
|
|
g_free(acb);
|
|
}
|
|
}
|