Vladimir Sementsov-Ogievskiy | aaaa20b | 2020-09-24 21:54:11 +0300 | [diff] [blame] | 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 */ |
| 32 | typedef struct BdrvPollCo { |
| 33 | BlockDriverState *bs; |
| 34 | bool in_progress; |
| 35 | int ret; |
| 36 | Coroutine *co; /* Keep pointer here for debugging */ |
| 37 | } BdrvPollCo; |
| 38 | |
| 39 | static 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 */ |