4 * IO engine using the GUASI library.
6 * This is currently disabled. To enable it, execute:
8 * $ export EXTFLAGS="-DFIO_HAVE_GUASI"
9 * $ export EXTLIBS="-lguasi"
11 * before running make. You'll need the GUASI lib as well:
13 * http://www.xmailserver.org/guasi-lib.html
27 #define GFIO_MIN_THREADS 32
28 #ifndef GFIO_MAX_THREADS
29 #define GFIO_MAX_THREADS 2000
33 #include <guasi_syscalls.h>
36 #define GDBG_PRINT(a) printf a
38 #define GDBG_PRINT(a) (void) 0
41 #define STFU_GCC(a) a = a
53 static int fio_guasi_prep(struct thread_data fio_unused *td, struct io_u *io_u)
56 GDBG_PRINT(("fio_guasi_prep(%p)\n", io_u));
62 static struct io_u *fio_guasi_event(struct thread_data *td, int event)
64 struct guasi_data *ld = td->io_ops->data;
66 struct guasi_reqinfo rinf;
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);
74 io_u->error = EINPROGRESS;
75 GDBG_PRINT(("fio_guasi_event(%d) -> %p\n", event, io_u));
76 if (rinf.status == GUASI_STATUS_COMPLETE) {
77 io_u->error = rinf.result;
78 if (io_u->ddir == DDIR_READ ||
79 io_u->ddir == DDIR_WRITE) {
81 if (rinf.result != (long) io_u->xfer_buflen) {
83 io_u->resid = io_u->xfer_buflen - rinf.result;
85 io_u->error = rinf.error;
93 static int fio_guasi_getevents(struct thread_data *td, int min, int max,
96 struct guasi_data *ld = td->io_ops->data;
100 GDBG_PRINT(("fio_guasi_getevents(%d, %d)\n", min, max));
101 if (min > ld->max_reqs)
103 if (max > ld->max_reqs)
106 timeo = t->tv_sec * 1000L + t->tv_nsec / 1000000L;
107 for (n = 0; n < ld->reqs_nr; n++)
108 guasi_req_free(ld->reqs[n]);
111 r = guasi_fetch(ld->hctx, ld->reqs + n, min - n,
114 fprintf(stderr, "guasi_fetch() FAILED! (%d)\n", r);
122 GDBG_PRINT(("fio_guasi_getevents() -> %d\n", n));
127 static int fio_guasi_queue(struct thread_data *td, struct io_u *io_u)
129 struct guasi_data *ld = td->io_ops->data;
131 GDBG_PRINT(("fio_guasi_queue(%p)\n", io_u));
132 if (ld->queued_nr == (int) td->o.iodepth)
135 ld->io_us[ld->queued_nr] = io_u;
140 static void fio_guasi_queued(struct thread_data *td, struct io_u **io_us, int nr)
146 fio_gettime(&now, NULL);
147 for (i = 0; i < nr; i++) {
149 memcpy(&io_u->issue_time, &now, sizeof(now));
150 io_u_queued(td, io_u);
154 static int fio_guasi_commit(struct thread_data *td)
156 struct guasi_data *ld = td->io_ops->data;
161 GDBG_PRINT(("fio_guasi_commit(%d)\n", ld->queued_nr));
162 for (i = 0; i < ld->queued_nr; i++) {
164 GDBG_PRINT(("fio_guasi_commit(%d) --> %p\n", i, io_u));
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,
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,
175 else if (io_u->ddir == DDIR_SYNC)
176 io_u->greq = guasi__fsync(ld->hctx, ld, io_u, 0, f->fd);
178 fprintf(stderr, "fio_guasi_commit() FAILED: unknow request %d\n",
181 if (io_u->greq == NULL) {
182 fprintf(stderr, "fio_guasi_commit() FAILED: submit failed (%s)\n",
187 fio_guasi_queued(td, ld->io_us, i);
189 GDBG_PRINT(("fio_guasi_commit() -> %d\n", i));
194 static int fio_guasi_cancel(struct thread_data *td, struct io_u *io_u)
196 struct guasi_data *ld = td->io_ops->data;
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);
206 static void fio_guasi_cleanup(struct thread_data *td)
208 struct guasi_data *ld = td->io_ops->data;
211 GDBG_PRINT(("fio_guasi_cleanup(%p)\n", ld));
213 for (n = 0; n < ld->reqs_nr; n++)
214 guasi_req_free(ld->reqs[n]);
215 guasi_free(ld->hctx);
219 td->io_ops->data = NULL;
221 GDBG_PRINT(("fio_guasi_cleanup(%p) DONE\n", ld));
224 static int fio_guasi_init(struct thread_data *td)
227 struct guasi_data *ld = malloc(sizeof(*ld));
229 GDBG_PRINT(("fio_guasi_init(): depth=%d\n", td->o.iodepth));
230 memset(ld, 0, sizeof(*ld));
231 maxthr = td->o.iodepth > GFIO_MIN_THREADS ? td->o.iodepth: GFIO_MIN_THREADS;
232 if (maxthr > GFIO_MAX_THREADS)
233 maxthr = GFIO_MAX_THREADS;
234 if ((ld->hctx = guasi_create(GFIO_MIN_THREADS, maxthr, 1, 0)) == NULL) {
235 td_verror(td, errno, "guasi_create");
239 ld->max_reqs = td->o.iodepth;
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 *));
246 td->io_ops->data = ld;
247 GDBG_PRINT(("fio_guasi_init(): depth=%d -> %p\n", td->o.iodepth, ld));
252 static struct ioengine_ops ioengine = {
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,
267 #else /* FIO_HAVE_GUASI */
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.
274 static int fio_guasi_init(struct thread_data fio_unused *td)
276 fprintf(stderr, "fio: guasi not available\n");
280 static struct ioengine_ops ioengine = {
282 .version = FIO_IOOPS_VERSION,
283 .init = fio_guasi_init,
288 static void fio_init fio_guasi_register(void)
290 register_ioengine(&ioengine);
293 static void fio_exit fio_guasi_unregister(void)
295 unregister_ioengine(&ioengine);