mirror of
https://github.com/qemu/qemu.git
synced 2025-10-30 19:15:42 +00:00
6e9b225f73
Common interface for aio task loops. To be used for improving performance of synchronous io loops in qcow2, block-stream, copy-on-read, and may be other places. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Message-id: 20190916175324.18478-3-vsementsov@virtuozzo.com Signed-off-by: Max Reitz <mreitz@redhat.com>
55 lines
2.0 KiB
C
55 lines
2.0 KiB
C
/*
|
|
* Aio tasks loops
|
|
*
|
|
* Copyright (c) 2019 Virtuozzo International GmbH.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef BLOCK_AIO_TASK_H
|
|
#define BLOCK_AIO_TASK_H
|
|
|
|
#include "qemu/coroutine.h"
|
|
|
|
typedef struct AioTaskPool AioTaskPool;
|
|
typedef struct AioTask AioTask;
|
|
typedef int coroutine_fn (*AioTaskFunc)(AioTask *task);
|
|
struct AioTask {
|
|
AioTaskPool *pool;
|
|
AioTaskFunc func;
|
|
int ret;
|
|
};
|
|
|
|
AioTaskPool *coroutine_fn aio_task_pool_new(int max_busy_tasks);
|
|
void aio_task_pool_free(AioTaskPool *);
|
|
|
|
/* error code of failed task or 0 if all is OK */
|
|
int aio_task_pool_status(AioTaskPool *pool);
|
|
|
|
bool aio_task_pool_empty(AioTaskPool *pool);
|
|
|
|
/* User provides filled @task, however task->pool will be set automatically */
|
|
void coroutine_fn aio_task_pool_start_task(AioTaskPool *pool, AioTask *task);
|
|
|
|
void coroutine_fn aio_task_pool_wait_slot(AioTaskPool *pool);
|
|
void coroutine_fn aio_task_pool_wait_one(AioTaskPool *pool);
|
|
void coroutine_fn aio_task_pool_wait_all(AioTaskPool *pool);
|
|
|
|
#endif /* BLOCK_AIO_TASK_H */
|