Commit | Line | Data |
---|---|---|
417f0068 JA |
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> |
417f0068 JA |
9 | #include <errno.h> |
10 | ||
11 | #include "../fio.h" | |
12 | ||
417f0068 JA |
13 | #include <sys/asynch.h> |
14 | ||
15 | struct solarisaio_data { | |
16 | struct io_u **aio_events; | |
556e831d | 17 | unsigned int aio_pending; |
417f0068 | 18 | unsigned int nr; |
5cf56c03 | 19 | unsigned int max_depth; |
417f0068 JA |
20 | }; |
21 | ||
22 | static int fio_solarisaio_cancel(struct thread_data fio_unused *td, | |
23 | struct io_u *io_u) | |
24 | { | |
25 | return aiocancel(&io_u->resultp); | |
26 | } | |
27 | ||
28 | static int fio_solarisaio_prep(struct thread_data fio_unused *td, | |
29 | struct io_u *io_u) | |
30 | { | |
565e784d | 31 | struct solarisaio_data *sd = td->io_ops_data; |
556e831d | 32 | |
417f0068 | 33 | io_u->resultp.aio_return = AIO_INPROGRESS; |
556e831d | 34 | io_u->engine_data = sd; |
417f0068 JA |
35 | return 0; |
36 | } | |
37 | ||
556e831d JA |
38 | static void wait_for_event(struct timeval *tv) |
39 | { | |
40 | struct solarisaio_data *sd; | |
41 | struct io_u *io_u; | |
42 | aio_result_t *res; | |
43 | ||
44 | res = aiowait(tv); | |
45 | if (res == (aio_result_t *) -1) { | |
46 | int err = errno; | |
47 | ||
48 | if (err != EINVAL) { | |
49 | log_err("fio: solarisaio got %d in aiowait\n", err); | |
50 | exit(err); | |
51 | } | |
52 | return; | |
53 | } else if (!res) | |
54 | return; | |
55 | ||
56 | io_u = container_of(res, struct io_u, resultp); | |
57 | sd = io_u->engine_data; | |
58 | ||
59 | if (io_u->resultp.aio_return >= 0) { | |
60 | io_u->resid = io_u->xfer_buflen - io_u->resultp.aio_return; | |
61 | io_u->error = 0; | |
62 | } else | |
983b770d | 63 | io_u->error = io_u->resultp.aio_errno; |
556e831d JA |
64 | |
65 | /* | |
66 | * For SIGIO, we need a write barrier between the two, so that | |
67 | * the ->aio_pending store is seen after the ->aio_events store | |
68 | */ | |
69 | sd->aio_events[sd->aio_pending] = io_u; | |
44c47feb | 70 | write_barrier(); |
556e831d JA |
71 | sd->aio_pending++; |
72 | sd->nr--; | |
73 | } | |
74 | ||
417f0068 | 75 | static int fio_solarisaio_getevents(struct thread_data *td, unsigned int min, |
1f440ece | 76 | unsigned int max, const struct timespec *t) |
417f0068 | 77 | { |
565e784d | 78 | struct solarisaio_data *sd = td->io_ops_data; |
417f0068 | 79 | struct timeval tv; |
556e831d | 80 | int ret; |
417f0068 | 81 | |
556e831d JA |
82 | if (!min || !t) { |
83 | tv.tv_sec = 0; | |
84 | tv.tv_usec = 0; | |
85 | } else { | |
86 | tv.tv_sec = t->tv_sec; | |
87 | tv.tv_usec = t->tv_nsec / 1000; | |
88 | } | |
89 | ||
90 | while (sd->aio_pending < min) | |
91 | wait_for_event(&tv); | |
417f0068 | 92 | |
556e831d | 93 | /* |
44c47feb | 94 | * should be OK without locking, as int operations should be atomic |
556e831d JA |
95 | */ |
96 | ret = sd->aio_pending; | |
44c47feb | 97 | sd->aio_pending -= ret; |
556e831d | 98 | return ret; |
417f0068 JA |
99 | } |
100 | ||
101 | static struct io_u *fio_solarisaio_event(struct thread_data *td, int event) | |
102 | { | |
565e784d | 103 | struct solarisaio_data *sd = td->io_ops_data; |
417f0068 JA |
104 | |
105 | return sd->aio_events[event]; | |
106 | } | |
107 | ||
211583aa | 108 | static enum fio_q_status fio_solarisaio_queue(struct thread_data fio_unused *td, |
417f0068 JA |
109 | struct io_u *io_u) |
110 | { | |
565e784d | 111 | struct solarisaio_data *sd = td->io_ops_data; |
417f0068 JA |
112 | struct fio_file *f = io_u->file; |
113 | off_t off; | |
114 | int ret; | |
115 | ||
116 | fio_ro_check(td, io_u); | |
117 | ||
118 | if (io_u->ddir == DDIR_SYNC) { | |
119 | if (sd->nr) | |
120 | return FIO_Q_BUSY; | |
121 | if (fsync(f->fd) < 0) | |
122 | io_u->error = errno; | |
123 | ||
124 | return FIO_Q_COMPLETED; | |
125 | } | |
126 | ||
5f9099ea JA |
127 | if (io_u->ddir == DDIR_DATASYNC) { |
128 | if (sd->nr) | |
129 | return FIO_Q_BUSY; | |
130 | if (fdatasync(f->fd) < 0) | |
131 | io_u->error = errno; | |
132 | ||
133 | return FIO_Q_COMPLETED; | |
134 | } | |
135 | ||
5cf56c03 | 136 | if (sd->nr == sd->max_depth) |
417f0068 JA |
137 | return FIO_Q_BUSY; |
138 | ||
139 | off = io_u->offset; | |
140 | if (io_u->ddir == DDIR_READ) | |
141 | ret = aioread(f->fd, io_u->xfer_buf, io_u->xfer_buflen, off, | |
142 | SEEK_SET, &io_u->resultp); | |
143 | else | |
144 | ret = aiowrite(f->fd, io_u->xfer_buf, io_u->xfer_buflen, off, | |
145 | SEEK_SET, &io_u->resultp); | |
146 | if (ret) { | |
147 | io_u->error = errno; | |
148 | td_verror(td, io_u->error, "xfer"); | |
149 | return FIO_Q_COMPLETED; | |
150 | } | |
151 | ||
152 | sd->nr++; | |
153 | return FIO_Q_QUEUED; | |
154 | } | |
155 | ||
156 | static void fio_solarisaio_cleanup(struct thread_data *td) | |
157 | { | |
565e784d | 158 | struct solarisaio_data *sd = td->io_ops_data; |
417f0068 JA |
159 | |
160 | if (sd) { | |
161 | free(sd->aio_events); | |
162 | free(sd); | |
163 | } | |
164 | } | |
165 | ||
556e831d | 166 | /* |
44c47feb | 167 | * Set USE_SIGNAL_COMPLETIONS to use SIGIO as completion events. |
556e831d | 168 | */ |
da28353c JA |
169 | #ifdef USE_SIGNAL_COMPLETIONS |
170 | static void fio_solarisaio_sigio(int sig) | |
171 | { | |
172 | wait_for_event(NULL); | |
173 | } | |
174 | ||
556e831d JA |
175 | static void fio_solarisaio_init_sigio(void) |
176 | { | |
556e831d JA |
177 | struct sigaction act; |
178 | ||
179 | memset(&act, 0, sizeof(act)); | |
180 | act.sa_handler = fio_solarisaio_sigio; | |
181 | act.sa_flags = SA_RESTART; | |
182 | sigaction(SIGIO, &act, NULL); | |
556e831d | 183 | } |
da28353c | 184 | #endif |
556e831d | 185 | |
417f0068 JA |
186 | static int fio_solarisaio_init(struct thread_data *td) |
187 | { | |
188 | struct solarisaio_data *sd = malloc(sizeof(*sd)); | |
5cf56c03 JA |
189 | unsigned int max_depth; |
190 | ||
191 | max_depth = td->o.iodepth; | |
192 | if (max_depth > MAXASYNCHIO) { | |
193 | max_depth = MAXASYNCHIO; | |
194 | log_info("fio: lower depth to %d due to OS constraints\n", | |
195 | max_depth); | |
196 | } | |
417f0068 JA |
197 | |
198 | memset(sd, 0, sizeof(*sd)); | |
5cf56c03 JA |
199 | sd->aio_events = malloc(max_depth * sizeof(struct io_u *)); |
200 | memset(sd->aio_events, 0, max_depth * sizeof(struct io_u *)); | |
201 | sd->max_depth = max_depth; | |
417f0068 | 202 | |
da28353c | 203 | #ifdef USE_SIGNAL_COMPLETIONS |
556e831d | 204 | fio_solarisaio_init_sigio(); |
da28353c | 205 | #endif |
556e831d | 206 | |
565e784d | 207 | td->io_ops_data = sd; |
417f0068 JA |
208 | return 0; |
209 | } | |
210 | ||
211 | static struct ioengine_ops ioengine = { | |
212 | .name = "solarisaio", | |
213 | .version = FIO_IOOPS_VERSION, | |
214 | .init = fio_solarisaio_init, | |
215 | .prep = fio_solarisaio_prep, | |
216 | .queue = fio_solarisaio_queue, | |
217 | .cancel = fio_solarisaio_cancel, | |
218 | .getevents = fio_solarisaio_getevents, | |
219 | .event = fio_solarisaio_event, | |
220 | .cleanup = fio_solarisaio_cleanup, | |
221 | .open_file = generic_open_file, | |
222 | .close_file = generic_close_file, | |
df9c26b1 | 223 | .get_file_size = generic_get_file_size, |
417f0068 JA |
224 | }; |
225 | ||
417f0068 JA |
226 | static void fio_init fio_solarisaio_register(void) |
227 | { | |
228 | register_ioengine(&ioengine); | |
229 | } | |
230 | ||
231 | static void fio_exit fio_solarisaio_unregister(void) | |
232 | { | |
233 | unregister_ioengine(&ioengine); | |
234 | } |