cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

aiocb.c (1782B)

      1/*
      2 * BlockAIOCB allocation
      3 *
      4 * Copyright (c) 2003-2017 Fabrice Bellard and other QEMU contributors
      5 *
      6 * Permission is hereby granted, free of charge, to any person obtaining a copy
      7 * of this software and associated documentation files (the "Software"), to deal
      8 * in the Software without restriction, including without limitation the rights
      9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     10 * copies of the Software, and to permit persons to whom the Software is
     11 * furnished to do so, subject to the following conditions:
     12 *
     13 * The above copyright notice and this permission notice shall be included in
     14 * all copies or substantial portions of the Software.
     15 *
     16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
     19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
     22 * THE SOFTWARE.
     23 */
     24
     25#include "qemu/osdep.h"
     26#include "block/aio.h"
     27
     28void *qemu_aio_get(const AIOCBInfo *aiocb_info, BlockDriverState *bs,
     29                   BlockCompletionFunc *cb, void *opaque)
     30{
     31    BlockAIOCB *acb;
     32
     33    acb = g_malloc(aiocb_info->aiocb_size);
     34    acb->aiocb_info = aiocb_info;
     35    acb->bs = bs;
     36    acb->cb = cb;
     37    acb->opaque = opaque;
     38    acb->refcnt = 1;
     39    return acb;
     40}
     41
     42void qemu_aio_ref(void *p)
     43{
     44    BlockAIOCB *acb = p;
     45    acb->refcnt++;
     46}
     47
     48void qemu_aio_unref(void *p)
     49{
     50    BlockAIOCB *acb = p;
     51    assert(acb->refcnt > 0);
     52    if (--acb->refcnt == 0) {
     53        g_free(acb);
     54    }
     55}