Commit | Line | Data |
---|---|---|
609342ff DL |
1 | /* |
2 | * guasi engine | |
3 | * | |
4 | * IO engine using the GUASI library. | |
5 | * | |
46eaa157 DL |
6 | * This is currently disabled. To enable it, execute: |
7 | * | |
8 | * $ export EXTFLAGS="-DFIO_HAVE_GUASI" | |
9 | * $ export EXTLIBS="-lguasi" | |
10 | * | |
11 | * before running make. You'll need the GUASI lib as well: | |
609342ff DL |
12 | * |
13 | * http://www.xmailserver.org/guasi-lib.html | |
14 | * | |
15 | */ | |
16 | #include <stdio.h> | |
17 | #include <stdlib.h> | |
18 | #include <unistd.h> | |
19 | #include <errno.h> | |
20 | #include <assert.h> | |
21 | ||
22 | #include "../fio.h" | |
609342ff DL |
23 | |
24 | #ifdef FIO_HAVE_GUASI | |
25 | ||
26 | #define GFIO_MIN_THREADS 32 | |
d6c6810f | 27 | #ifndef GFIO_MAX_THREADS |
97c26cbe | 28 | #define GFIO_MAX_THREADS 2000 |
d6c6810f | 29 | #endif |
609342ff DL |
30 | |
31 | #include <guasi.h> | |
32 | #include <guasi_syscalls.h> | |
33 | ||
34 | #ifdef GFIO_DEBUG | |
35 | #define GDBG_PRINT(a) printf a | |
36 | #else | |
37 | #define GDBG_PRINT(a) (void) 0 | |
38 | #endif | |
39 | ||
40 | #define STFU_GCC(a) a = a | |
41 | ||
42 | ||
43 | struct guasi_data { | |
44 | guasi_t hctx; | |
45 | int max_reqs; | |
46 | guasi_req_t *reqs; | |
47 | struct io_u **io_us; | |
46eaa157 | 48 | int queued_nr; |
609342ff DL |
49 | int reqs_nr; |
50 | }; | |
51 | ||
52 | static int fio_guasi_prep(struct thread_data fio_unused *td, struct io_u *io_u) | |
53 | { | |
609342ff DL |
54 | |
55 | GDBG_PRINT(("fio_guasi_prep(%p)\n", io_u)); | |
46eaa157 | 56 | io_u->greq = NULL; |
609342ff DL |
57 | |
58 | return 0; | |
59 | } | |
60 | ||
61 | static struct io_u *fio_guasi_event(struct thread_data *td, int event) | |
62 | { | |
63 | struct guasi_data *ld = td->io_ops->data; | |
64 | struct io_u *io_u; | |
65 | struct guasi_reqinfo rinf; | |
66 | ||
67 | GDBG_PRINT(("fio_guasi_event(%d)\n", event)); | |
68 | if (guasi_req_info(ld->reqs[event], &rinf) < 0) { | |
07257263 | 69 | log_err("guasi_req_info(%d) FAILED!\n", event); |
609342ff DL |
70 | return NULL; |
71 | } | |
72 | io_u = rinf.asid; | |
66b83d9a | 73 | io_u->error = EINPROGRESS; |
609342ff | 74 | GDBG_PRINT(("fio_guasi_event(%d) -> %p\n", event, io_u)); |
66b83d9a | 75 | if (rinf.status == GUASI_STATUS_COMPLETE) { |
609342ff | 76 | io_u->error = rinf.result; |
66b83d9a DL |
77 | if (io_u->ddir == DDIR_READ || |
78 | io_u->ddir == DDIR_WRITE) { | |
79 | io_u->error = 0; | |
80 | if (rinf.result != (long) io_u->xfer_buflen) { | |
81 | if (rinf.result >= 0) | |
82 | io_u->resid = io_u->xfer_buflen - rinf.result; | |
83 | else | |
84 | io_u->error = rinf.error; | |
85 | } | |
86 | } | |
87 | } | |
609342ff DL |
88 | |
89 | return io_u; | |
90 | } | |
91 | ||
92 | static int fio_guasi_getevents(struct thread_data *td, int min, int max, | |
93 | struct timespec *t) | |
94 | { | |
95 | struct guasi_data *ld = td->io_ops->data; | |
46eaa157 | 96 | int n, r; |
609342ff DL |
97 | long timeo = -1; |
98 | ||
99 | GDBG_PRINT(("fio_guasi_getevents(%d, %d)\n", min, max)); | |
100 | if (min > ld->max_reqs) | |
101 | min = ld->max_reqs; | |
102 | if (max > ld->max_reqs) | |
103 | max = ld->max_reqs; | |
104 | if (t) | |
105 | timeo = t->tv_sec * 1000L + t->tv_nsec / 1000000L; | |
46eaa157 DL |
106 | for (n = 0; n < ld->reqs_nr; n++) |
107 | guasi_req_free(ld->reqs[n]); | |
108 | n = 0; | |
609342ff | 109 | do { |
97c26cbe DL |
110 | r = guasi_fetch(ld->hctx, ld->reqs + n, min - n, |
111 | max - n, timeo); | |
112 | if (r < 0) { | |
07257263 | 113 | log_err("guasi_fetch() FAILED! (%d)\n", r); |
609342ff | 114 | break; |
97c26cbe | 115 | } |
609342ff DL |
116 | n += r; |
117 | if (n >= min) | |
118 | break; | |
119 | } while (1); | |
46eaa157 | 120 | ld->reqs_nr = n; |
609342ff DL |
121 | GDBG_PRINT(("fio_guasi_getevents() -> %d\n", n)); |
122 | ||
123 | return n; | |
124 | } | |
125 | ||
126 | static int fio_guasi_queue(struct thread_data *td, struct io_u *io_u) | |
127 | { | |
128 | struct guasi_data *ld = td->io_ops->data; | |
129 | ||
130 | GDBG_PRINT(("fio_guasi_queue(%p)\n", io_u)); | |
46eaa157 | 131 | if (ld->queued_nr == (int) td->o.iodepth) |
609342ff DL |
132 | return FIO_Q_BUSY; |
133 | ||
46eaa157 DL |
134 | ld->io_us[ld->queued_nr] = io_u; |
135 | ld->queued_nr++; | |
609342ff DL |
136 | return FIO_Q_QUEUED; |
137 | } | |
138 | ||
97c26cbe | 139 | static void fio_guasi_queued(struct thread_data *td, struct io_u **io_us, int nr) |
609342ff | 140 | { |
97c26cbe DL |
141 | int i; |
142 | struct io_u *io_u; | |
609342ff | 143 | struct timeval now; |
609342ff DL |
144 | |
145 | fio_gettime(&now, NULL); | |
97c26cbe DL |
146 | for (i = 0; i < nr; i++) { |
147 | io_u = io_us[i]; | |
148 | memcpy(&io_u->issue_time, &now, sizeof(now)); | |
149 | io_u_queued(td, io_u); | |
150 | } | |
609342ff DL |
151 | } |
152 | ||
153 | static int fio_guasi_commit(struct thread_data *td) | |
154 | { | |
155 | struct guasi_data *ld = td->io_ops->data; | |
156 | int i; | |
157 | struct io_u *io_u; | |
158 | struct fio_file *f; | |
159 | ||
d6c6810f | 160 | GDBG_PRINT(("fio_guasi_commit(%d)\n", ld->queued_nr)); |
46eaa157 | 161 | for (i = 0; i < ld->queued_nr; i++) { |
609342ff | 162 | io_u = ld->io_us[i]; |
d6c6810f | 163 | GDBG_PRINT(("fio_guasi_commit(%d) --> %p\n", i, io_u)); |
609342ff DL |
164 | f = io_u->file; |
165 | io_u->greq = NULL; | |
166 | if (io_u->ddir == DDIR_READ) | |
167 | io_u->greq = guasi__pread(ld->hctx, ld, io_u, 0, | |
168 | f->fd, io_u->xfer_buf, io_u->xfer_buflen, | |
169 | io_u->offset); | |
170 | else if (io_u->ddir == DDIR_WRITE) | |
171 | io_u->greq = guasi__pwrite(ld->hctx, ld, io_u, 0, | |
172 | f->fd, io_u->xfer_buf, io_u->xfer_buflen, | |
173 | io_u->offset); | |
174 | else if (io_u->ddir == DDIR_SYNC) | |
175 | io_u->greq = guasi__fsync(ld->hctx, ld, io_u, 0, f->fd); | |
176 | else { | |
07257263 | 177 | log_err("fio_guasi_commit() FAILED: unknow request %d\n", |
66b83d9a | 178 | io_u->ddir); |
609342ff | 179 | } |
97c26cbe | 180 | if (io_u->greq == NULL) { |
07257263 | 181 | log_err("fio_guasi_commit() FAILED: submit failed (%s)\n", |
d6c6810f | 182 | strerror(errno)); |
46eaa157 DL |
183 | return -1; |
184 | } | |
609342ff | 185 | } |
97c26cbe | 186 | fio_guasi_queued(td, ld->io_us, i); |
46eaa157 | 187 | ld->queued_nr = 0; |
609342ff DL |
188 | GDBG_PRINT(("fio_guasi_commit() -> %d\n", i)); |
189 | ||
190 | return 0; | |
191 | } | |
192 | ||
193 | static int fio_guasi_cancel(struct thread_data *td, struct io_u *io_u) | |
194 | { | |
195 | struct guasi_data *ld = td->io_ops->data; | |
196 | ||
197 | STFU_GCC(ld); | |
46eaa157 DL |
198 | GDBG_PRINT(("fio_guasi_cancel(%p) req=%p\n", io_u, io_u->greq)); |
199 | if (io_u->greq != NULL) | |
200 | guasi_req_cancel(io_u->greq); | |
609342ff | 201 | |
46eaa157 | 202 | return 0; |
609342ff DL |
203 | } |
204 | ||
205 | static void fio_guasi_cleanup(struct thread_data *td) | |
206 | { | |
207 | struct guasi_data *ld = td->io_ops->data; | |
8999fe9a | 208 | int n; |
609342ff | 209 | |
46eaa157 | 210 | GDBG_PRINT(("fio_guasi_cleanup(%p)\n", ld)); |
609342ff | 211 | if (ld) { |
8999fe9a DL |
212 | for (n = 0; n < ld->reqs_nr; n++) |
213 | guasi_req_free(ld->reqs[n]); | |
609342ff DL |
214 | guasi_free(ld->hctx); |
215 | free(ld->reqs); | |
216 | free(ld->io_us); | |
217 | free(ld); | |
218 | td->io_ops->data = NULL; | |
219 | } | |
46eaa157 | 220 | GDBG_PRINT(("fio_guasi_cleanup(%p) DONE\n", ld)); |
609342ff DL |
221 | } |
222 | ||
223 | static int fio_guasi_init(struct thread_data *td) | |
224 | { | |
225 | int maxthr; | |
226 | struct guasi_data *ld = malloc(sizeof(*ld)); | |
227 | ||
46eaa157 | 228 | GDBG_PRINT(("fio_guasi_init(): depth=%d\n", td->o.iodepth)); |
609342ff | 229 | memset(ld, 0, sizeof(*ld)); |
46eaa157 | 230 | maxthr = td->o.iodepth > GFIO_MIN_THREADS ? td->o.iodepth: GFIO_MIN_THREADS; |
d6c6810f DL |
231 | if (maxthr > GFIO_MAX_THREADS) |
232 | maxthr = GFIO_MAX_THREADS; | |
0798ba36 | 233 | if ((ld->hctx = guasi_create(GFIO_MIN_THREADS, maxthr, 1)) == NULL) { |
609342ff DL |
234 | td_verror(td, errno, "guasi_create"); |
235 | free(ld); | |
236 | return 1; | |
237 | } | |
46eaa157 | 238 | ld->max_reqs = td->o.iodepth; |
609342ff DL |
239 | ld->reqs = malloc(ld->max_reqs * sizeof(guasi_req_t)); |
240 | ld->io_us = malloc(ld->max_reqs * sizeof(struct io_u *)); | |
241 | memset(ld->io_us, 0, ld->max_reqs * sizeof(struct io_u *)); | |
46eaa157 | 242 | ld->queued_nr = 0; |
609342ff DL |
243 | ld->reqs_nr = 0; |
244 | ||
245 | td->io_ops->data = ld; | |
46eaa157 | 246 | GDBG_PRINT(("fio_guasi_init(): depth=%d -> %p\n", td->o.iodepth, ld)); |
609342ff DL |
247 | |
248 | return 0; | |
249 | } | |
250 | ||
251 | static struct ioengine_ops ioengine = { | |
252 | .name = "guasi", | |
253 | .version = FIO_IOOPS_VERSION, | |
254 | .init = fio_guasi_init, | |
255 | .prep = fio_guasi_prep, | |
256 | .queue = fio_guasi_queue, | |
257 | .commit = fio_guasi_commit, | |
258 | .cancel = fio_guasi_cancel, | |
259 | .getevents = fio_guasi_getevents, | |
260 | .event = fio_guasi_event, | |
261 | .cleanup = fio_guasi_cleanup, | |
262 | .open_file = generic_open_file, | |
263 | .close_file = generic_close_file, | |
264 | }; | |
265 | ||
266 | #else /* FIO_HAVE_GUASI */ | |
267 | ||
268 | /* | |
269 | * When we have a proper configure system in place, we simply wont build | |
270 | * and install this io engine. For now install a crippled version that | |
271 | * just complains and fails to load. | |
272 | */ | |
273 | static int fio_guasi_init(struct thread_data fio_unused *td) | |
274 | { | |
275 | fprintf(stderr, "fio: guasi not available\n"); | |
276 | return 1; | |
277 | } | |
278 | ||
279 | static struct ioengine_ops ioengine = { | |
280 | .name = "guasi", | |
281 | .version = FIO_IOOPS_VERSION, | |
282 | .init = fio_guasi_init, | |
283 | }; | |
284 | ||
285 | #endif | |
286 | ||
287 | static void fio_init fio_guasi_register(void) | |
288 | { | |
289 | register_ioengine(&ioengine); | |
290 | } | |
291 | ||
292 | static void fio_exit fio_guasi_unregister(void) | |
293 | { | |
294 | unregister_ioengine(&ioengine); | |
295 | } | |
296 |