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
30 #include <guasi_syscalls.h>
33 #define GDBG_PRINT(a) printf a
35 #define GDBG_PRINT(a) (void) 0
38 #define STFU_GCC(a) a = a
50 static int fio_guasi_prep(struct thread_data fio_unused *td, struct io_u *io_u)
53 GDBG_PRINT(("fio_guasi_prep(%p)\n", io_u));
59 static struct io_u *fio_guasi_event(struct thread_data *td, int event)
61 struct guasi_data *ld = td->io_ops->data;
63 struct guasi_reqinfo rinf;
65 GDBG_PRINT(("fio_guasi_event(%d)\n", event));
66 if (guasi_req_info(ld->reqs[event], &rinf) < 0) {
67 fprintf(stderr, "guasi_req_info(%d) FAILED!\n", event);
71 io_u->error = EINPROGRESS;
72 GDBG_PRINT(("fio_guasi_event(%d) -> %p\n", event, io_u));
73 if (rinf.status == GUASI_STATUS_COMPLETE) {
74 io_u->error = rinf.result;
75 if (io_u->ddir == DDIR_READ ||
76 io_u->ddir == DDIR_WRITE) {
78 if (rinf.result != (long) io_u->xfer_buflen) {
80 io_u->resid = io_u->xfer_buflen - rinf.result;
82 io_u->error = rinf.error;
90 static int fio_guasi_getevents(struct thread_data *td, int min, int max,
93 struct guasi_data *ld = td->io_ops->data;
97 GDBG_PRINT(("fio_guasi_getevents(%d, %d)\n", min, max));
98 if (min > ld->max_reqs)
100 if (max > ld->max_reqs)
103 timeo = t->tv_sec * 1000L + t->tv_nsec / 1000000L;
104 for (n = 0; n < ld->reqs_nr; n++)
105 guasi_req_free(ld->reqs[n]);
108 r = guasi_fetch(ld->hctx, ld->reqs + n, max - n, timeo);
116 GDBG_PRINT(("fio_guasi_getevents() -> %d\n", n));
121 static int fio_guasi_queue(struct thread_data *td, struct io_u *io_u)
123 struct guasi_data *ld = td->io_ops->data;
125 GDBG_PRINT(("fio_guasi_queue(%p)\n", io_u));
126 if (ld->queued_nr == (int) td->o.iodepth)
129 ld->io_us[ld->queued_nr] = io_u;
134 static void fio_guasi_queued(struct thread_data *td, struct io_u **io_us,
138 struct io_u *io_u = io_us[nr];
140 fio_gettime(&now, NULL);
141 memcpy(&io_u->issue_time, &now, sizeof(now));
142 io_u_queued(td, io_u);
145 static int fio_guasi_commit(struct thread_data *td)
147 struct guasi_data *ld = td->io_ops->data;
152 GDBG_PRINT(("fio_guasi_commit()\n"));
153 for (i = 0; i < ld->queued_nr; i++) {
157 if (io_u->ddir == DDIR_READ)
158 io_u->greq = guasi__pread(ld->hctx, ld, io_u, 0,
159 f->fd, io_u->xfer_buf, io_u->xfer_buflen,
161 else if (io_u->ddir == DDIR_WRITE)
162 io_u->greq = guasi__pwrite(ld->hctx, ld, io_u, 0,
163 f->fd, io_u->xfer_buf, io_u->xfer_buflen,
165 else if (io_u->ddir == DDIR_SYNC)
166 io_u->greq = guasi__fsync(ld->hctx, ld, io_u, 0, f->fd);
168 fprintf(stderr, "fio_guasi_commit() FAILED: unknow request %d\n",
171 if (io_u->greq != NULL)
172 fio_guasi_queued(td, ld->io_us, i);
174 perror("guasi submit");
175 fprintf(stderr, "fio_guasi_commit() FAILED: submit failed\n");
180 GDBG_PRINT(("fio_guasi_commit() -> %d\n", i));
185 static int fio_guasi_cancel(struct thread_data *td, struct io_u *io_u)
187 struct guasi_data *ld = td->io_ops->data;
190 GDBG_PRINT(("fio_guasi_cancel(%p) req=%p\n", io_u, io_u->greq));
191 if (io_u->greq != NULL)
192 guasi_req_cancel(io_u->greq);
197 static void fio_guasi_cleanup(struct thread_data *td)
199 struct guasi_data *ld = td->io_ops->data;
201 GDBG_PRINT(("fio_guasi_cleanup(%p)\n", ld));
203 guasi_free(ld->hctx);
207 td->io_ops->data = NULL;
209 GDBG_PRINT(("fio_guasi_cleanup(%p) DONE\n", ld));
212 static int fio_guasi_init(struct thread_data *td)
215 struct guasi_data *ld = malloc(sizeof(*ld));
217 GDBG_PRINT(("fio_guasi_init(): depth=%d\n", td->o.iodepth));
218 memset(ld, 0, sizeof(*ld));
219 maxthr = td->o.iodepth > GFIO_MIN_THREADS ? td->o.iodepth: GFIO_MIN_THREADS;
220 if ((ld->hctx = guasi_create(GFIO_MIN_THREADS, maxthr, 1)) == NULL) {
221 td_verror(td, errno, "guasi_create");
225 ld->max_reqs = td->o.iodepth;
226 ld->reqs = malloc(ld->max_reqs * sizeof(guasi_req_t));
227 ld->io_us = malloc(ld->max_reqs * sizeof(struct io_u *));
228 memset(ld->io_us, 0, ld->max_reqs * sizeof(struct io_u *));
232 td->io_ops->data = ld;
233 GDBG_PRINT(("fio_guasi_init(): depth=%d -> %p\n", td->o.iodepth, ld));
238 static struct ioengine_ops ioengine = {
240 .version = FIO_IOOPS_VERSION,
241 .init = fio_guasi_init,
242 .prep = fio_guasi_prep,
243 .queue = fio_guasi_queue,
244 .commit = fio_guasi_commit,
245 .cancel = fio_guasi_cancel,
246 .getevents = fio_guasi_getevents,
247 .event = fio_guasi_event,
248 .cleanup = fio_guasi_cleanup,
249 .open_file = generic_open_file,
250 .close_file = generic_close_file,
253 #else /* FIO_HAVE_GUASI */
256 * When we have a proper configure system in place, we simply wont build
257 * and install this io engine. For now install a crippled version that
258 * just complains and fails to load.
260 static int fio_guasi_init(struct thread_data fio_unused *td)
262 fprintf(stderr, "fio: guasi not available\n");
266 static struct ioengine_ops ioengine = {
268 .version = FIO_IOOPS_VERSION,
269 .init = fio_guasi_init,
274 static void fio_init fio_guasi_register(void)
276 register_ioengine(&ioengine);
279 static void fio_exit fio_guasi_unregister(void)
281 unregister_ioengine(&ioengine);