LXR qemu/block/block-gen.h

   1/*
   2 * Block coroutine wrapping core, used by auto-generated block/block-gen.c
   3 *
   4 * Copyright (c) 2003 Fabrice Bellard
   5 * Copyright (c) 2020 Virtuozzo International GmbH
   6 *
   7 * Permission is hereby granted, free of charge, to any person obtaining a copy
   8 * of this software and associated documentation files (the "Software"), to deal
   9 * in the Software without restriction, including without limitation the rights
  10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11 * copies of the Software, and to permit persons to whom the Software is
  12 * furnished to do so, subject to the following conditions:
  13 *
  14 * The above copyright notice and this permission notice shall be included in
  15 * all copies or substantial portions of the Software.
  16 *
  17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  23 * THE SOFTWARE.
  24 */
  25
  26#ifndef BLOCK_BLOCK_GEN_H
  27#define BLOCK_BLOCK_GEN_H
  28
  29#include "block/block_int.h"
  30
  31/* Base structure for argument packing structures */
  32typedef struct BdrvPollCo {
  33    BlockDriverState *bs;
  34    bool in_progress;
  35    int ret;
  36    Coroutine *co; /* Keep pointer here for debugging */
  37} BdrvPollCo;
  38
  39static inline int bdrv_poll_co(BdrvPollCo *s)
  40{
  41    assert(!qemu_in_coroutine());
  42
  43    bdrv_coroutine_enter(s->bs, s->co);
  44    BDRV_POLL_WHILE(s->bs, s->in_progress);
  45
  46    return s->ret;
  47}
  48
  49#endif /* BLOCK_BLOCK_GEN_H */
  50