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" | |
23 | #include "../os.h" | |
24 | ||
25 | #ifdef FIO_HAVE_GUASI | |
26 | ||
27 | #define GFIO_MIN_THREADS 32 | |
d6c6810f | 28 | #ifndef GFIO_MAX_THREADS |
97c26cbe | 29 | #define GFIO_MAX_THREADS 2000 |
d6c6810f | 30 | #endif |
609342ff DL |
31 | |
32 | #include <guasi.h> | |
33 | #include <guasi_syscalls.h> | |
34 | ||
35 | #ifdef GFIO_DEBUG | |
36 | #define GDBG_PRINT(a) printf a | |
37 | #else | |
38 | #define GDBG_PRINT(a) (void) 0 | |
39 | #endif | |
40 | ||
41 | #define STFU_GCC(a) a = a | |
42 | ||
43 | ||
44 | struct guasi_data { | |
45 | guasi_t hctx; | |
46 | int max_reqs; | |
47 | guasi_req_t *reqs; | |
48 | struct io_u **io_us; | |
46eaa157 | 49 | int queued_nr; |
609342ff DL |
50 | int reqs_nr; |
51 | }; | |
52 | ||
53 | static int fio_guasi_prep(struct thread_data fio_unused *td, struct io_u *io_u) | |
54 | { | |
609342ff DL |
55 | |
56 | GDBG_PRINT(("fio_guasi_prep(%p)\n", io_u)); | |
46eaa157 | 57 | io_u->greq = NULL; |
609342ff DL |
58 | |
59 | return 0; | |
60 | } | |
61 | ||
62 | static struct io_u *fio_guasi_event(struct thread_data *td, int event) | |
63 | { | |
64 | struct guasi_data *ld = td->io_ops->data; | |
65 | struct io_u *io_u; | |
66 | struct guasi_reqinfo rinf; | |
67 | ||
68 | GDBG_PRINT(("fio_guasi_event(%d)\n", event)); | |
69 | if (guasi_req_info(ld->reqs[event], &rinf) < 0) { | |
70 | fprintf(stderr, "guasi_req_info(%d) FAILED!\n", event); | |
71 | return NULL; | |
72 | } | |
73 | io_u = rinf.asid; | |
66b83d9a | 74 | io_u->error = EINPROGRESS; |
609342ff | 75 | GDBG_PRINT(("fio_guasi_event(%d) -> %p\n", event, io_u)); |
66b83d9a | 76 | if (rinf.status == GUASI_STATUS_COMPLETE) { |
609342ff | 77 | io_u->error = rinf.result; |
66b83d9a DL |
78 | if (io_u->ddir == DDIR_READ || |
79 | io_u->ddir == DDIR_WRITE) { | |
80 | io_u->error = 0; | |
81 | if (rinf.result != (long) io_u->xfer_buflen) { | |
82 | if (rinf.result >= 0) | |
83 | io_u->resid = io_u->xfer_buflen - rinf.result; | |
84 | else | |
85 | io_u->error = rinf.error; | |
86 | } | |
87 | } | |
88 | } | |
609342ff DL |
89 | |
90 | return io_u; | |
91 | } | |
92 | ||
93 | static int fio_guasi_getevents(struct thread_data *td, int min, int max, | |
94 | struct timespec *t) | |
95 | { | |
96 | struct guasi_data *ld = td->io_ops->data; | |
46eaa157 | 97 | int n, r; |
609342ff DL |
98 | long timeo = -1; |
99 | ||
100 | GDBG_PRINT(("fio_guasi_getevents(%d, %d)\n", min, max)); | |
101 | if (min > ld->max_reqs) | |
102 | min = ld->max_reqs; | |
103 | if (max > ld->max_reqs) | |
104 | max = ld->max_reqs; | |
105 | if (t) | |
106 | timeo = t->tv_sec * 1000L + t->tv_nsec / 1000000L; | |
46eaa157 DL |
107 | for (n = 0; n < ld->reqs_nr; n++) |
108 | guasi_req_free(ld->reqs[n]); | |
109 | n = 0; | |
609342ff | 110 | do { |
97c26cbe DL |
111 | r = guasi_fetch(ld->hctx, ld->reqs + n, min - n, |
112 | max - n, timeo); | |
113 | if (r < 0) { | |
114 | fprintf(stderr, "guasi_fetch() FAILED! (%d)\n", r); | |
609342ff | 115 | break; |
97c26cbe | 116 | } |
609342ff DL |
117 | n += r; |
118 | if (n >= min) | |
119 | break; | |
120 | } while (1); | |
46eaa157 | 121 | ld->reqs_nr = n; |
609342ff DL |
122 | GDBG_PRINT(("fio_guasi_getevents() -> %d\n", n)); |
123 | ||
124 | return n; | |
125 | } | |
126 | ||
127 | static int fio_guasi_queue(struct thread_data *td, struct io_u *io_u) | |
128 | { | |
129 | struct guasi_data *ld = td->io_ops->data; | |
130 | ||
131 | GDBG_PRINT(("fio_guasi_queue(%p)\n", io_u)); | |
46eaa157 | 132 | if (ld->queued_nr == (int) td->o.iodepth) |
609342ff DL |
133 | return FIO_Q_BUSY; |
134 | ||
46eaa157 DL |
135 | ld->io_us[ld->queued_nr] = io_u; |
136 | ld->queued_nr++; | |
609342ff DL |
137 | return FIO_Q_QUEUED; |
138 | } | |
139 | ||
97c26cbe | 140 | static void fio_guasi_queued(struct thread_data *td, struct io_u **io_us, int nr) |
609342ff | 141 | { |
97c26cbe DL |
142 | int i; |
143 | struct io_u *io_u; | |
609342ff | 144 | struct timeval now; |
609342ff DL |
145 | |
146 | fio_gettime(&now, NULL); | |
97c26cbe DL |
147 | for (i = 0; i < nr; i++) { |
148 | io_u = io_us[i]; | |
149 | memcpy(&io_u->issue_time, &now, sizeof(now)); | |
150 | io_u_queued(td, io_u); | |
151 | } | |
609342ff DL |
152 | } |
153 | ||
154 | static int fio_guasi_commit(struct thread_data *td) | |
155 | { | |
156 | struct guasi_data *ld = td->io_ops->data; | |
157 | int i; | |
158 | struct io_u *io_u; | |
159 | struct fio_file *f; | |
160 | ||
d6c6810f | 161 | GDBG_PRINT(("fio_guasi_commit(%d)\n", ld->queued_nr)); |
46eaa157 | 162 | for (i = 0; i < ld->queued_nr; i++) { |
609342ff | 163 | io_u = ld->io_us[i]; |
d6c6810f | 164 | GDBG_PRINT(("fio_guasi_commit(%d) --> %p\n", i, io_u)); |
609342ff DL |
165 | f = io_u->file; |
166 | io_u->greq = NULL; | |
167 | if (io_u->ddir == DDIR_READ) | |
168 | io_u->greq = guasi__pread(ld->hctx, ld, io_u, 0, | |
169 | f->fd, io_u->xfer_buf, io_u->xfer_buflen, | |
170 | io_u->offset); | |
171 | else if (io_u->ddir == DDIR_WRITE) | |
172 | io_u->greq = guasi__pwrite(ld->hctx, ld, io_u, 0, | |
173 | f->fd, io_u->xfer_buf, io_u->xfer_buflen, | |
174 | io_u->offset); | |
175 | else if (io_u->ddir == DDIR_SYNC) | |
176 | io_u->greq = guasi__fsync(ld->hctx, ld, io_u, 0, f->fd); | |
177 | else { | |
66b83d9a DL |
178 | fprintf(stderr, "fio_guasi_commit() FAILED: unknow request %d\n", |
179 | io_u->ddir); | |
609342ff | 180 | } |
97c26cbe | 181 | if (io_u->greq == NULL) { |
d6c6810f DL |
182 | fprintf(stderr, "fio_guasi_commit() FAILED: submit failed (%s)\n", |
183 | strerror(errno)); | |
46eaa157 DL |
184 | return -1; |
185 | } | |
609342ff | 186 | } |
97c26cbe | 187 | fio_guasi_queued(td, ld->io_us, i); |
46eaa157 | 188 | ld->queued_nr = 0; |
609342ff DL |
189 | GDBG_PRINT(("fio_guasi_commit() -> %d\n", i)); |
190 | ||
191 | return 0; | |
192 | } | |
193 | ||
194 | static int fio_guasi_cancel(struct thread_data *td, struct io_u *io_u) | |
195 | { | |
196 | struct guasi_data *ld = td->io_ops->data; | |
197 | ||
198 | STFU_GCC(ld); | |
46eaa157 DL |
199 | GDBG_PRINT(("fio_guasi_cancel(%p) req=%p\n", io_u, io_u->greq)); |
200 | if (io_u->greq != NULL) | |
201 | guasi_req_cancel(io_u->greq); | |
609342ff | 202 | |
46eaa157 | 203 | return 0; |
609342ff DL |
204 | } |
205 | ||
206 | static void fio_guasi_cleanup(struct thread_data *td) | |
207 | { | |
208 | struct guasi_data *ld = td->io_ops->data; | |
8999fe9a | 209 | int n; |
609342ff | 210 | |
46eaa157 | 211 | GDBG_PRINT(("fio_guasi_cleanup(%p)\n", ld)); |
609342ff | 212 | if (ld) { |
8999fe9a DL |
213 | for (n = 0; n < ld->reqs_nr; n++) |
214 | guasi_req_free(ld->reqs[n]); | |
609342ff DL |
215 | guasi_free(ld->hctx); |
216 | free(ld->reqs); | |
217 | free(ld->io_us); | |
218 | free(ld); | |
219 | td->io_ops->data = NULL; | |
220 | } | |
46eaa157 | 221 | GDBG_PRINT(("fio_guasi_cleanup(%p) DONE\n", ld)); |
609342ff DL |
222 | } |
223 | ||
224 | static int fio_guasi_init(struct thread_data *td) | |
225 | { | |
226 | int maxthr; | |
227 | struct guasi_data *ld = malloc(sizeof(*ld)); | |
228 | ||
46eaa157 | 229 | GDBG_PRINT(("fio_guasi_init(): depth=%d\n", td->o.iodepth)); |
609342ff | 230 | memset(ld, 0, sizeof(*ld)); |
46eaa157 | 231 | maxthr = td->o.iodepth > GFIO_MIN_THREADS ? td->o.iodepth: GFIO_MIN_THREADS; |
d6c6810f DL |
232 | if (maxthr > GFIO_MAX_THREADS) |
233 | maxthr = GFIO_MAX_THREADS; | |
97c26cbe | 234 | if ((ld->hctx = guasi_create(GFIO_MIN_THREADS, maxthr, 1, 0)) == NULL) { |
609342ff DL |
235 | td_verror(td, errno, "guasi_create"); |
236 | free(ld); | |
237 | return 1; | |
238 | } | |
46eaa157 | 239 | ld->max_reqs = td->o.iodepth; |
609342ff DL |
240 | ld->reqs = malloc(ld->max_reqs * sizeof(guasi_req_t)); |
241 | ld->io_us = malloc(ld->max_reqs * sizeof(struct io_u *)); | |
242 | memset(ld->io_us, 0, ld->max_reqs * sizeof(struct io_u *)); | |
46eaa157 | 243 | ld->queued_nr = 0; |
609342ff DL |
244 | ld->reqs_nr = 0; |
245 | ||
246 | td->io_ops->data = ld; | |
46eaa157 | 247 | GDBG_PRINT(("fio_guasi_init(): depth=%d -> %p\n", td->o.iodepth, ld)); |
609342ff DL |
248 | |
249 | return 0; | |
250 | } | |
251 | ||
252 | static struct ioengine_ops ioengine = { | |
253 | .name = "guasi", | |
254 | .version = FIO_IOOPS_VERSION, | |
255 | .init = fio_guasi_init, | |
256 | .prep = fio_guasi_prep, | |
257 | .queue = fio_guasi_queue, | |
258 | .commit = fio_guasi_commit, | |
259 | .cancel = fio_guasi_cancel, | |
260 | .getevents = fio_guasi_getevents, | |
261 | .event = fio_guasi_event, | |
262 | .cleanup = fio_guasi_cleanup, | |
263 | .open_file = generic_open_file, | |
264 | .close_file = generic_close_file, | |
265 | }; | |
266 | ||
267 | #else /* FIO_HAVE_GUASI */ | |
268 | ||
269 | /* | |
270 | * When we have a proper configure system in place, we simply wont build | |
271 | * and install this io engine. For now install a crippled version that | |
272 | * just complains and fails to load. | |
273 | */ | |
274 | static int fio_guasi_init(struct thread_data fio_unused *td) | |
275 | { | |
276 | fprintf(stderr, "fio: guasi not available\n"); | |
277 | return 1; | |
278 | } | |
279 | ||
280 | static struct ioengine_ops ioengine = { | |
281 | .name = "guasi", | |
282 | .version = FIO_IOOPS_VERSION, | |
283 | .init = fio_guasi_init, | |
284 | }; | |
285 | ||
286 | #endif | |
287 | ||
288 | static void fio_init fio_guasi_register(void) | |
289 | { | |
290 | register_ioengine(&ioengine); | |
291 | } | |
292 | ||
293 | static void fio_exit fio_guasi_unregister(void) | |
294 | { | |
295 | unregister_ioengine(&ioengine); | |
296 | } | |
297 |