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 io_u->error = EINPROGRESS;
68 GDBG_PRINT(("fio_guasi_event(%d) -> %p\n", event, io_u));
69 if (rinf.status == GUASI_STATUS_COMPLETE) {
70 io_u->error = rinf.result;
71 if (io_u->ddir == DDIR_READ ||
72 io_u->ddir == DDIR_WRITE) {
74 if (rinf.result != (long) io_u->xfer_buflen) {
76 io_u->resid = io_u->xfer_buflen - rinf.result;
78 io_u->error = rinf.error;
86 static int fio_guasi_getevents(struct thread_data *td, int min, int max,
89 struct guasi_data *ld = td->io_ops->data;
93 GDBG_PRINT(("fio_guasi_getevents(%d, %d)\n", min, max));
94 if (min > ld->max_reqs)
96 if (max > ld->max_reqs)
99 timeo = t->tv_sec * 1000L + t->tv_nsec / 1000000L;
101 r = guasi_fetch(ld->hctx, ld->reqs + n, max - n, timeo);
108 GDBG_PRINT(("fio_guasi_getevents() -> %d\n", n));
113 static int fio_guasi_queue(struct thread_data *td, struct io_u *io_u)
115 struct guasi_data *ld = td->io_ops->data;
117 GDBG_PRINT(("fio_guasi_queue(%p)\n", io_u));
118 if (ld->reqs_nr == (int) td->iodepth)
121 ld->io_us[ld->reqs_nr] = io_u;
126 static void fio_guasi_queued(struct thread_data *td, struct io_u **io_us,
130 struct io_u *io_u = io_us[nr];
132 fio_gettime(&now, NULL);
133 memcpy(&io_u->issue_time, &now, sizeof(now));
134 io_u_queued(td, io_u);
137 static int fio_guasi_commit(struct thread_data *td)
139 struct guasi_data *ld = td->io_ops->data;
144 GDBG_PRINT(("fio_guasi_commit()\n"));
145 for (i = 0; i < ld->reqs_nr; i++) {
149 if (io_u->ddir == DDIR_READ)
150 io_u->greq = guasi__pread(ld->hctx, ld, io_u, 0,
151 f->fd, io_u->xfer_buf, io_u->xfer_buflen,
153 else if (io_u->ddir == DDIR_WRITE)
154 io_u->greq = guasi__pwrite(ld->hctx, ld, io_u, 0,
155 f->fd, io_u->xfer_buf, io_u->xfer_buflen,
157 else if (io_u->ddir == DDIR_SYNC)
158 io_u->greq = guasi__fsync(ld->hctx, ld, io_u, 0, f->fd);
160 fprintf(stderr, "fio_guasi_commit() FAILED: unknow request %d\n",
163 if (io_u->greq != NULL)
164 fio_guasi_queued(td, ld->io_us, i);
167 GDBG_PRINT(("fio_guasi_commit() -> %d\n", i));
172 static int fio_guasi_cancel(struct thread_data *td, struct io_u *io_u)
174 struct guasi_data *ld = td->io_ops->data;
177 GDBG_PRINT(("fio_guasi_cancel(%p)\n", io_u));
179 return guasi_req_cancel(io_u->greq);
182 static void fio_guasi_cleanup(struct thread_data *td)
184 struct guasi_data *ld = td->io_ops->data;
187 guasi_free(ld->hctx);
191 td->io_ops->data = NULL;
195 static int fio_guasi_init(struct thread_data *td)
198 struct guasi_data *ld = malloc(sizeof(*ld));
200 GDBG_PRINT(("fio_guasi_init(): depth=%d\n", td->iodepth));
201 memset(ld, 0, sizeof(*ld));
202 maxthr = td->iodepth > GFIO_MIN_THREADS ? td->iodepth: GFIO_MIN_THREADS;
203 if ((ld->hctx = guasi_create(GFIO_MIN_THREADS, maxthr, 1)) == NULL) {
204 td_verror(td, errno, "guasi_create");
208 ld->max_reqs = td->iodepth;
209 ld->reqs = malloc(ld->max_reqs * sizeof(guasi_req_t));
210 ld->io_us = malloc(ld->max_reqs * sizeof(struct io_u *));
211 memset(ld->io_us, 0, ld->max_reqs * sizeof(struct io_u *));
214 td->io_ops->data = ld;
215 GDBG_PRINT(("fio_guasi_init(): depth=%d -> %p\n", td->iodepth, ld));
220 static struct ioengine_ops ioengine = {
222 .version = FIO_IOOPS_VERSION,
223 .init = fio_guasi_init,
224 .prep = fio_guasi_prep,
225 .queue = fio_guasi_queue,
226 .commit = fio_guasi_commit,
227 .cancel = fio_guasi_cancel,
228 .getevents = fio_guasi_getevents,
229 .event = fio_guasi_event,
230 .cleanup = fio_guasi_cleanup,
231 .open_file = generic_open_file,
232 .close_file = generic_close_file,
235 #else /* FIO_HAVE_GUASI */
238 * When we have a proper configure system in place, we simply wont build
239 * and install this io engine. For now install a crippled version that
240 * just complains and fails to load.
242 static int fio_guasi_init(struct thread_data fio_unused *td)
244 fprintf(stderr, "fio: guasi not available\n");
248 static struct ioengine_ops ioengine = {
250 .version = FIO_IOOPS_VERSION,
251 .init = fio_guasi_init,
256 static void fio_init fio_guasi_register(void)
258 register_ioengine(&ioengine);
261 static void fio_exit fio_guasi_unregister(void)
263 unregister_ioengine(&ioengine);