4 * IO engine using the GUASI library.
6 * This is currently disabled, add -lguasi to the fio Makefile target
7 * and add a #define FIO_HAVE_GUASI to os-linux.h to enable it. You'll
8 * need the GUASI lib as well:
10 * http://www.xmailserver.org/guasi-lib.html
24 #define GFIO_MIN_THREADS 32
27 #include <guasi_syscalls.h>
30 #define GDBG_PRINT(a) printf a
32 #define GDBG_PRINT(a) (void) 0
35 #define STFU_GCC(a) a = a
46 static int fio_guasi_prep(struct thread_data fio_unused *td, struct io_u *io_u)
50 GDBG_PRINT(("fio_guasi_prep(%p)\n", io_u));
55 static struct io_u *fio_guasi_event(struct thread_data *td, int event)
57 struct guasi_data *ld = td->io_ops->data;
59 struct guasi_reqinfo rinf;
61 GDBG_PRINT(("fio_guasi_event(%d)\n", event));
62 if (guasi_req_info(ld->reqs[event], &rinf) < 0) {
63 fprintf(stderr, "guasi_req_info(%d) FAILED!\n", event);
67 GDBG_PRINT(("fio_guasi_event(%d) -> %p\n", event, io_u));
69 if (io_u->ddir == DDIR_READ ||
70 io_u->ddir == DDIR_WRITE) {
71 if (rinf.result != (long) io_u->xfer_buflen) {
73 io_u->error = rinf.error;
75 io_u->resid = io_u->xfer_buflen - rinf.result;
79 io_u->error = rinf.result;
84 static int fio_guasi_getevents(struct thread_data *td, int min, int max,
87 struct guasi_data *ld = td->io_ops->data;
91 GDBG_PRINT(("fio_guasi_getevents(%d, %d)\n", min, max));
92 if (min > ld->max_reqs)
94 if (max > ld->max_reqs)
97 timeo = t->tv_sec * 1000L + t->tv_nsec / 1000000L;
99 r = guasi_fetch(ld->hctx, ld->reqs + n, max - n, timeo);
106 GDBG_PRINT(("fio_guasi_getevents() -> %d\n", n));
111 static int fio_guasi_queue(struct thread_data *td, struct io_u *io_u)
113 struct guasi_data *ld = td->io_ops->data;
115 GDBG_PRINT(("fio_guasi_queue(%p)\n", io_u));
116 if (ld->reqs_nr == (int) td->iodepth)
119 ld->io_us[ld->reqs_nr] = io_u;
124 static void fio_guasi_queued(struct thread_data *td, struct io_u **io_us,
128 struct io_u *io_u = io_us[nr];
130 fio_gettime(&now, NULL);
131 memcpy(&io_u->issue_time, &now, sizeof(now));
132 io_u_queued(td, io_u);
135 static int fio_guasi_commit(struct thread_data *td)
137 struct guasi_data *ld = td->io_ops->data;
142 GDBG_PRINT(("fio_guasi_commit()\n"));
143 for (i = 0; i < ld->reqs_nr; i++) {
147 if (io_u->ddir == DDIR_READ)
148 io_u->greq = guasi__pread(ld->hctx, ld, io_u, 0,
149 f->fd, io_u->xfer_buf, io_u->xfer_buflen,
151 else if (io_u->ddir == DDIR_WRITE)
152 io_u->greq = guasi__pwrite(ld->hctx, ld, io_u, 0,
153 f->fd, io_u->xfer_buf, io_u->xfer_buflen,
155 else if (io_u->ddir == DDIR_SYNC)
156 io_u->greq = guasi__fsync(ld->hctx, ld, io_u, 0, f->fd);
158 fprintf(stderr, "fio_guasi_commit() FAILED: %d\n", io_u->ddir);
160 if (io_u->greq != NULL)
161 fio_guasi_queued(td, ld->io_us, i);
164 GDBG_PRINT(("fio_guasi_commit() -> %d\n", i));
169 static int fio_guasi_cancel(struct thread_data *td, struct io_u *io_u)
171 struct guasi_data *ld = td->io_ops->data;
174 GDBG_PRINT(("fio_guasi_cancel(%p)\n", io_u));
176 return guasi_req_cancel(io_u->greq);
179 static void fio_guasi_cleanup(struct thread_data *td)
181 struct guasi_data *ld = td->io_ops->data;
184 guasi_free(ld->hctx);
188 td->io_ops->data = NULL;
192 static int fio_guasi_init(struct thread_data *td)
195 struct guasi_data *ld = malloc(sizeof(*ld));
197 GDBG_PRINT(("fio_guasi_init(): depth=%d\n", td->iodepth));
198 memset(ld, 0, sizeof(*ld));
199 maxthr = td->iodepth > GFIO_MIN_THREADS ? td->iodepth: GFIO_MIN_THREADS;
200 if ((ld->hctx = guasi_create(GFIO_MIN_THREADS, maxthr, 1)) == NULL) {
201 td_verror(td, errno, "guasi_create");
205 ld->max_reqs = td->iodepth;
206 ld->reqs = malloc(ld->max_reqs * sizeof(guasi_req_t));
207 ld->io_us = malloc(ld->max_reqs * sizeof(struct io_u *));
208 memset(ld->io_us, 0, ld->max_reqs * sizeof(struct io_u *));
211 td->io_ops->data = ld;
212 GDBG_PRINT(("fio_guasi_init(): depth=%d -> %p\n", td->iodepth, ld));
217 static struct ioengine_ops ioengine = {
219 .version = FIO_IOOPS_VERSION,
220 .init = fio_guasi_init,
221 .prep = fio_guasi_prep,
222 .queue = fio_guasi_queue,
223 .commit = fio_guasi_commit,
224 .cancel = fio_guasi_cancel,
225 .getevents = fio_guasi_getevents,
226 .event = fio_guasi_event,
227 .cleanup = fio_guasi_cleanup,
228 .open_file = generic_open_file,
229 .close_file = generic_close_file,
232 #else /* FIO_HAVE_GUASI */
235 * When we have a proper configure system in place, we simply wont build
236 * and install this io engine. For now install a crippled version that
237 * just complains and fails to load.
239 static int fio_guasi_init(struct thread_data fio_unused *td)
241 fprintf(stderr, "fio: guasi not available\n");
245 static struct ioengine_ops ioengine = {
247 .version = FIO_IOOPS_VERSION,
248 .init = fio_guasi_init,
253 static void fio_init fio_guasi_register(void)
255 register_ioengine(&ioengine);
258 static void fio_exit fio_guasi_unregister(void)
260 unregister_ioengine(&ioengine);