[PATCH] Kill old libaio/posixaio checks
[fio.git] / engines / fio-engine-libaio.c
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1/*
2 * native linux aio io engine
3 *
4 */
5#include <stdio.h>
6#include <stdlib.h>
7#include <unistd.h>
8#include <errno.h>
9#include <assert.h>
10#include "fio.h"
11#include "os.h"
12
13#define ev_to_iou(ev) (struct io_u *) ((unsigned long) (ev)->obj)
14
15struct libaio_data {
16 io_context_t aio_ctx;
17 struct io_event *aio_events;
18};
19
7a16dd02 20static int fio_libaio_prep(struct thread_data fio_unused *td, struct io_u *io_u)
2866c82d 21{
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22 struct fio_file *f = io_u->file;
23
2866c82d 24 if (io_u->ddir == DDIR_READ)
53cdc686 25 io_prep_pread(&io_u->iocb, f->fd, io_u->buf, io_u->buflen, io_u->offset);
87dc1ab1 26 else if (io_u->ddir == DDIR_WRITE)
53cdc686 27 io_prep_pwrite(&io_u->iocb, f->fd, io_u->buf, io_u->buflen, io_u->offset);
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28 else if (io_u->ddir == DDIR_SYNC)
29 io_prep_fsync(&io_u->iocb, f->fd);
30 else
31 return 1;
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32
33 return 0;
34}
35
36static struct io_u *fio_libaio_event(struct thread_data *td, int event)
37{
38 struct libaio_data *ld = td->io_ops->data;
39
40 return ev_to_iou(ld->aio_events + event);
41}
42
43static int fio_libaio_getevents(struct thread_data *td, int min, int max,
44 struct timespec *t)
45{
46 struct libaio_data *ld = td->io_ops->data;
47 long r;
48
49 do {
50 r = io_getevents(ld->aio_ctx, min, max, ld->aio_events, t);
51 if (r == -EAGAIN) {
52 usleep(100);
53 continue;
54 } else if (r == -EINTR)
55 continue;
84585003 56 else if (r != 0)
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57 break;
58 } while (1);
59
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60 if (r < 0)
61 r = -r;
62
63 return (int) r;
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64}
65
66static int fio_libaio_queue(struct thread_data *td, struct io_u *io_u)
67{
68 struct libaio_data *ld = td->io_ops->data;
69 struct iocb *iocb = &io_u->iocb;
70 long ret;
71
72 do {
73 ret = io_submit(ld->aio_ctx, 1, &iocb);
74 if (ret == 1)
75 return 0;
84585003 76 else if (ret == -EAGAIN || !ret)
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77 usleep(100);
78 else if (ret == -EINTR)
79 continue;
80 else
81 break;
82 } while (1);
83
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84 if (ret <= 0) {
85 io_u->resid = io_u->buflen;
86 io_u->error = -ret;
87 return 1;
88 }
2866c82d 89
353a7e0e 90 return 0;
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91}
92
93static int fio_libaio_cancel(struct thread_data *td, struct io_u *io_u)
94{
95 struct libaio_data *ld = td->io_ops->data;
96
97 return io_cancel(ld->aio_ctx, &io_u->iocb, ld->aio_events);
98}
99
100static void fio_libaio_cleanup(struct thread_data *td)
101{
102 struct libaio_data *ld = td->io_ops->data;
103
104 if (ld) {
105 io_destroy(ld->aio_ctx);
106 if (ld->aio_events)
107 free(ld->aio_events);
108
109 free(ld);
110 td->io_ops->data = NULL;
111 }
112}
113
114static int fio_libaio_init(struct thread_data *td)
115{
116 struct libaio_data *ld = malloc(sizeof(*ld));
117
118 memset(ld, 0, sizeof(*ld));
119 if (io_queue_init(td->iodepth, &ld->aio_ctx)) {
120 td_verror(td, errno);
121 return 1;
122 }
123
124 ld->aio_events = malloc(td->iodepth * sizeof(struct io_event));
84585003 125 memset(ld->aio_events, 0, td->iodepth * sizeof(struct io_event));
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126 td->io_ops->data = ld;
127 return 0;
128}
129
130struct ioengine_ops ioengine = {
131 .name = "libaio",
132 .version = FIO_IOOPS_VERSION,
133 .init = fio_libaio_init,
134 .prep = fio_libaio_prep,
135 .queue = fio_libaio_queue,
136 .cancel = fio_libaio_cancel,
137 .getevents = fio_libaio_getevents,
138 .event = fio_libaio_event,
139 .cleanup = fio_libaio_cleanup,
2866c82d 140};