Issue time fixup for guasi/libaio
[fio.git] / engines / solarisaio.c
CommitLineData
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1/*
2 * Native Solaris async IO engine
3 *
4 */
5#include <stdio.h>
6#include <stdlib.h>
7#include <unistd.h>
556e831d 8#include <signal.h>
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9#include <errno.h>
10
11#include "../fio.h"
12
13#ifdef FIO_HAVE_SOLARISAIO
14
15#include <sys/asynch.h>
16
17struct solarisaio_data {
18 struct io_u **aio_events;
556e831d 19 unsigned int aio_pending;
417f0068 20 unsigned int nr;
5cf56c03 21 unsigned int max_depth;
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22};
23
24static int fio_solarisaio_cancel(struct thread_data fio_unused *td,
25 struct io_u *io_u)
26{
27 return aiocancel(&io_u->resultp);
28}
29
30static int fio_solarisaio_prep(struct thread_data fio_unused *td,
31 struct io_u *io_u)
32{
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33 struct solarisaio_data *sd = td->io_ops->data;
34
417f0068 35 io_u->resultp.aio_return = AIO_INPROGRESS;
556e831d 36 io_u->engine_data = sd;
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37 return 0;
38}
39
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40static void wait_for_event(struct timeval *tv)
41{
42 struct solarisaio_data *sd;
43 struct io_u *io_u;
44 aio_result_t *res;
45
46 res = aiowait(tv);
47 if (res == (aio_result_t *) -1) {
48 int err = errno;
49
50 if (err != EINVAL) {
51 log_err("fio: solarisaio got %d in aiowait\n", err);
52 exit(err);
53 }
54 return;
55 } else if (!res)
56 return;
57
58 io_u = container_of(res, struct io_u, resultp);
59 sd = io_u->engine_data;
60
61 if (io_u->resultp.aio_return >= 0) {
62 io_u->resid = io_u->xfer_buflen - io_u->resultp.aio_return;
63 io_u->error = 0;
64 } else
65 io_u->error = io_u->resultp.aio_return;
66
67 /*
68 * For SIGIO, we need a write barrier between the two, so that
69 * the ->aio_pending store is seen after the ->aio_events store
70 */
71 sd->aio_events[sd->aio_pending] = io_u;
44c47feb 72 write_barrier();
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73 sd->aio_pending++;
74 sd->nr--;
75}
76
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77static int fio_solarisaio_getevents(struct thread_data *td, unsigned int min,
78 unsigned int max, struct timespec *t)
79{
80 struct solarisaio_data *sd = td->io_ops->data;
81 struct timeval tv;
556e831d 82 int ret;
417f0068 83
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84 if (!min || !t) {
85 tv.tv_sec = 0;
86 tv.tv_usec = 0;
87 } else {
88 tv.tv_sec = t->tv_sec;
89 tv.tv_usec = t->tv_nsec / 1000;
90 }
91
92 while (sd->aio_pending < min)
93 wait_for_event(&tv);
417f0068 94
556e831d 95 /*
44c47feb 96 * should be OK without locking, as int operations should be atomic
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97 */
98 ret = sd->aio_pending;
44c47feb 99 sd->aio_pending -= ret;
556e831d 100 return ret;
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101}
102
103static struct io_u *fio_solarisaio_event(struct thread_data *td, int event)
104{
105 struct solarisaio_data *sd = td->io_ops->data;
106
107 return sd->aio_events[event];
108}
109
110static int fio_solarisaio_queue(struct thread_data fio_unused *td,
111 struct io_u *io_u)
112{
113 struct solarisaio_data *sd = td->io_ops->data;
114 struct fio_file *f = io_u->file;
115 off_t off;
116 int ret;
117
118 fio_ro_check(td, io_u);
119
120 if (io_u->ddir == DDIR_SYNC) {
121 if (sd->nr)
122 return FIO_Q_BUSY;
123 if (fsync(f->fd) < 0)
124 io_u->error = errno;
125
126 return FIO_Q_COMPLETED;
127 }
128
5cf56c03 129 if (sd->nr == sd->max_depth)
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130 return FIO_Q_BUSY;
131
132 off = io_u->offset;
133 if (io_u->ddir == DDIR_READ)
134 ret = aioread(f->fd, io_u->xfer_buf, io_u->xfer_buflen, off,
135 SEEK_SET, &io_u->resultp);
136 else
137 ret = aiowrite(f->fd, io_u->xfer_buf, io_u->xfer_buflen, off,
138 SEEK_SET, &io_u->resultp);
139 if (ret) {
140 io_u->error = errno;
141 td_verror(td, io_u->error, "xfer");
142 return FIO_Q_COMPLETED;
143 }
144
145 sd->nr++;
146 return FIO_Q_QUEUED;
147}
148
149static void fio_solarisaio_cleanup(struct thread_data *td)
150{
151 struct solarisaio_data *sd = td->io_ops->data;
152
153 if (sd) {
154 free(sd->aio_events);
155 free(sd);
156 }
157}
158
556e831d 159/*
44c47feb 160 * Set USE_SIGNAL_COMPLETIONS to use SIGIO as completion events.
556e831d 161 */
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162#ifdef USE_SIGNAL_COMPLETIONS
163static void fio_solarisaio_sigio(int sig)
164{
165 wait_for_event(NULL);
166}
167
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168static void fio_solarisaio_init_sigio(void)
169{
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170 struct sigaction act;
171
172 memset(&act, 0, sizeof(act));
173 act.sa_handler = fio_solarisaio_sigio;
174 act.sa_flags = SA_RESTART;
175 sigaction(SIGIO, &act, NULL);
556e831d 176}
da28353c 177#endif
556e831d 178
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179static int fio_solarisaio_init(struct thread_data *td)
180{
181 struct solarisaio_data *sd = malloc(sizeof(*sd));
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182 unsigned int max_depth;
183
184 max_depth = td->o.iodepth;
185 if (max_depth > MAXASYNCHIO) {
186 max_depth = MAXASYNCHIO;
187 log_info("fio: lower depth to %d due to OS constraints\n",
188 max_depth);
189 }
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190
191 memset(sd, 0, sizeof(*sd));
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192 sd->aio_events = malloc(max_depth * sizeof(struct io_u *));
193 memset(sd->aio_events, 0, max_depth * sizeof(struct io_u *));
194 sd->max_depth = max_depth;
417f0068 195
da28353c 196#ifdef USE_SIGNAL_COMPLETIONS
556e831d 197 fio_solarisaio_init_sigio();
da28353c 198#endif
556e831d 199
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200 td->io_ops->data = sd;
201 return 0;
202}
203
204static struct ioengine_ops ioengine = {
205 .name = "solarisaio",
206 .version = FIO_IOOPS_VERSION,
207 .init = fio_solarisaio_init,
208 .prep = fio_solarisaio_prep,
209 .queue = fio_solarisaio_queue,
210 .cancel = fio_solarisaio_cancel,
211 .getevents = fio_solarisaio_getevents,
212 .event = fio_solarisaio_event,
213 .cleanup = fio_solarisaio_cleanup,
214 .open_file = generic_open_file,
215 .close_file = generic_close_file,
216};
217
218#else /* FIO_HAVE_SOLARISAIO */
219
220/*
221 * When we have a proper configure system in place, we simply wont build
222 * and install this io engine. For now install a crippled version that
223 * just complains and fails to load.
224 */
225static int fio_solarisaio_init(struct thread_data fio_unused *td)
226{
227 fprintf(stderr, "fio: solarisaio not available\n");
228 return 1;
229}
230
231static struct ioengine_ops ioengine = {
232 .name = "solarisaio",
233 .version = FIO_IOOPS_VERSION,
234 .init = fio_solarisaio_init,
235};
236
237#endif
238
239static void fio_init fio_solarisaio_register(void)
240{
241 register_ioengine(&ioengine);
242}
243
244static void fio_exit fio_solarisaio_unregister(void)
245{
246 unregister_ioengine(&ioengine);
247}