blob: 5dddd711a953805ce9e52afbb21f640cf3aa58d7 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
/*
* QEMU posix-aio emulation
*
* Copyright IBM, Corp. 2008
*
* Authors:
* Anthony Liguori <aliguori@us.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2. See
* the COPYING file in the top-level directory.
*
*/
#ifndef QEMU_POSIX_AIO_COMPAT_H
#define QEMU_POSIX_AIO_COMPAT_H
#include <sys/types.h>
#include <unistd.h>
#include <signal.h>
#include "sys-queue.h"
#define QEMU_PAIO_CANCELED 0x01
#define QEMU_PAIO_NOTCANCELED 0x02
#define QEMU_PAIO_ALLDONE 0x03
struct qemu_paiocb
{
int aio_fildes;
void *aio_buf;
size_t aio_nbytes;
struct sigevent aio_sigevent;
off_t aio_offset;
/* private */
TAILQ_ENTRY(qemu_paiocb) node;
int is_write;
ssize_t ret;
int active;
};
struct qemu_paioinit
{
unsigned int aio_threads;
unsigned int aio_num;
unsigned int aio_idle_time;
};
int qemu_paio_init(struct qemu_paioinit *aioinit);
int qemu_paio_read(struct qemu_paiocb *aiocb);
int qemu_paio_write(struct qemu_paiocb *aiocb);
int qemu_paio_error(struct qemu_paiocb *aiocb);
ssize_t qemu_paio_return(struct qemu_paiocb *aiocb);
int qemu_paio_cancel(int fd, struct qemu_paiocb *aiocb);
#endif
|
