block-gen.h (1768B)
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 */