+++ /dev/null
-/*
- * guasi engine
- *
- * IO engine using the GUASI library.
- *
- * Before running make. You'll need the GUASI lib as well:
- *
- * http://www.xmailserver.org/guasi-lib.html
- *
- */
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <errno.h>
-#include <assert.h>
-
-#include "../fio.h"
-
-#define GFIO_MIN_THREADS 32
-#ifndef GFIO_MAX_THREADS
-#define GFIO_MAX_THREADS 2000
-#endif
-
-#include <guasi.h>
-#include <guasi_syscalls.h>
-
-#ifdef GFIO_DEBUG
-#define GDBG_PRINT(a) printf a
-#else
-#define GDBG_PRINT(a) (void) 0
-#endif
-
-struct guasi_data {
- guasi_t hctx;
- int max_reqs;
- guasi_req_t *reqs;
- struct io_u **io_us;
- int queued_nr;
- int reqs_nr;
-};
-
-static int fio_guasi_prep(struct thread_data fio_unused *td, struct io_u *io_u)
-{
-
- GDBG_PRINT(("fio_guasi_prep(%p)\n", io_u));
- io_u->greq = NULL;
-
- return 0;
-}
-
-static struct io_u *fio_guasi_event(struct thread_data *td, int event)
-{
- struct guasi_data *ld = td->io_ops_data;
- struct io_u *io_u;
- struct guasi_reqinfo rinf;
-
- GDBG_PRINT(("fio_guasi_event(%d)\n", event));
- if (guasi_req_info(ld->reqs[event], &rinf) < 0) {
- log_err("guasi_req_info(%d) FAILED!\n", event);
- return NULL;
- }
- io_u = rinf.asid;
- io_u->error = EINPROGRESS;
- GDBG_PRINT(("fio_guasi_event(%d) -> %p\n", event, io_u));
- if (rinf.status == GUASI_STATUS_COMPLETE) {
- io_u->error = rinf.result;
- if (io_u->ddir == DDIR_READ ||
- io_u->ddir == DDIR_WRITE) {
- io_u->error = 0;
- if (rinf.result != (long) io_u->xfer_buflen) {
- if (rinf.result >= 0)
- io_u->resid = io_u->xfer_buflen - rinf.result;
- else
- io_u->error = rinf.error;
- }
- }
- }
-
- return io_u;
-}
-
-static int fio_guasi_getevents(struct thread_data *td, unsigned int min,
- unsigned int max, const struct timespec *t)
-{
- struct guasi_data *ld = td->io_ops_data;
- int n, r;
- long timeo = -1;
-
- GDBG_PRINT(("fio_guasi_getevents(%d, %d)\n", min, max));
- if (min > ld->max_reqs)
- min = ld->max_reqs;
- if (max > ld->max_reqs)
- max = ld->max_reqs;
- if (t)
- timeo = t->tv_sec * 1000L + t->tv_nsec / 1000000L;
- for (n = 0; n < ld->reqs_nr; n++)
- guasi_req_free(ld->reqs[n]);
- n = 0;
- do {
- r = guasi_fetch(ld->hctx, ld->reqs + n, min - n,
- max - n, timeo);
- if (r < 0) {
- log_err("guasi_fetch() FAILED! (%d)\n", r);
- break;
- }
- n += r;
- if (n >= min)
- break;
- } while (1);
- ld->reqs_nr = n;
- GDBG_PRINT(("fio_guasi_getevents() -> %d\n", n));
-
- return n;
-}
-
-static enum fio_q_status fio_guasi_queue(struct thread_data *td,
- struct io_u *io_u)
-{
- struct guasi_data *ld = td->io_ops_data;
-
- fio_ro_check(td, io_u);
-
- GDBG_PRINT(("fio_guasi_queue(%p)\n", io_u));
- if (ld->queued_nr == (int) td->o.iodepth)
- return FIO_Q_BUSY;
-
- ld->io_us[ld->queued_nr] = io_u;
- ld->queued_nr++;
- return FIO_Q_QUEUED;
-}
-
-static void fio_guasi_queued(struct thread_data *td, struct io_u **io_us, int nr)
-{
- int i;
- struct io_u *io_u;
- struct timespec now;
-
- if (!fio_fill_issue_time(td))
- return;
-
- io_u_mark_submit(td, nr);
- fio_gettime(&now, NULL);
- for (i = 0; i < nr; i++) {
- io_u = io_us[i];
- memcpy(&io_u->issue_time, &now, sizeof(now));
- io_u_queued(td, io_u);
- }
-}
-
-static int fio_guasi_commit(struct thread_data *td)
-{
- struct guasi_data *ld = td->io_ops_data;
- int i;
- struct io_u *io_u;
- struct fio_file *f;
-
- GDBG_PRINT(("fio_guasi_commit(%d)\n", ld->queued_nr));
- for (i = 0; i < ld->queued_nr; i++) {
- io_u = ld->io_us[i];
- GDBG_PRINT(("fio_guasi_commit(%d) --> %p\n", i, io_u));
- f = io_u->file;
- io_u->greq = NULL;
- if (io_u->ddir == DDIR_READ)
- io_u->greq = guasi__pread(ld->hctx, ld, io_u, 0,
- f->fd, io_u->xfer_buf, io_u->xfer_buflen,
- io_u->offset);
- else if (io_u->ddir == DDIR_WRITE)
- io_u->greq = guasi__pwrite(ld->hctx, ld, io_u, 0,
- f->fd, io_u->xfer_buf, io_u->xfer_buflen,
- io_u->offset);
- else if (ddir_sync(io_u->ddir))
- io_u->greq = guasi__fsync(ld->hctx, ld, io_u, 0, f->fd);
- else {
- log_err("fio_guasi_commit() FAILED: unknow request %d\n",
- io_u->ddir);
- }
- if (io_u->greq == NULL) {
- log_err("fio_guasi_commit() FAILED: submit failed (%s)\n",
- strerror(errno));
- return -1;
- }
- }
- fio_guasi_queued(td, ld->io_us, i);
- ld->queued_nr = 0;
- GDBG_PRINT(("fio_guasi_commit() -> %d\n", i));
-
- return 0;
-}
-
-static int fio_guasi_cancel(struct thread_data fio_unused *td,
- struct io_u *io_u)
-{
- GDBG_PRINT(("fio_guasi_cancel(%p) req=%p\n", io_u, io_u->greq));
- if (io_u->greq != NULL)
- guasi_req_cancel(io_u->greq);
-
- return 0;
-}
-
-static void fio_guasi_cleanup(struct thread_data *td)
-{
- struct guasi_data *ld = td->io_ops_data;
- int n;
-
- GDBG_PRINT(("fio_guasi_cleanup(%p)\n", ld));
- if (ld) {
- for (n = 0; n < ld->reqs_nr; n++)
- guasi_req_free(ld->reqs[n]);
- guasi_free(ld->hctx);
- free(ld->reqs);
- free(ld->io_us);
- free(ld);
- }
- GDBG_PRINT(("fio_guasi_cleanup(%p) DONE\n", ld));
-}
-
-static int fio_guasi_init(struct thread_data *td)
-{
- int maxthr;
- struct guasi_data *ld = malloc(sizeof(*ld));
-
- GDBG_PRINT(("fio_guasi_init(): depth=%d\n", td->o.iodepth));
- memset(ld, 0, sizeof(*ld));
- maxthr = td->o.iodepth > GFIO_MIN_THREADS ? td->o.iodepth: GFIO_MIN_THREADS;
- if (maxthr > GFIO_MAX_THREADS)
- maxthr = GFIO_MAX_THREADS;
- if ((ld->hctx = guasi_create(GFIO_MIN_THREADS, maxthr, 1)) == NULL) {
- td_verror(td, errno, "guasi_create");
- free(ld);
- return 1;
- }
- ld->max_reqs = td->o.iodepth;
- ld->reqs = malloc(ld->max_reqs * sizeof(guasi_req_t));
- ld->io_us = malloc(ld->max_reqs * sizeof(struct io_u *));
- memset(ld->io_us, 0, ld->max_reqs * sizeof(struct io_u *));
- ld->queued_nr = 0;
- ld->reqs_nr = 0;
-
- td->io_ops_data = ld;
- GDBG_PRINT(("fio_guasi_init(): depth=%d -> %p\n", td->o.iodepth, ld));
-
- return 0;
-}
-
-FIO_STATIC struct ioengine_ops ioengine = {
- .name = "guasi",
- .version = FIO_IOOPS_VERSION,
- .init = fio_guasi_init,
- .prep = fio_guasi_prep,
- .queue = fio_guasi_queue,
- .commit = fio_guasi_commit,
- .cancel = fio_guasi_cancel,
- .getevents = fio_guasi_getevents,
- .event = fio_guasi_event,
- .cleanup = fio_guasi_cleanup,
- .open_file = generic_open_file,
- .close_file = generic_close_file,
- .get_file_size = generic_get_file_size,
-};
-
-static void fio_init fio_guasi_register(void)
-{
- register_ioengine(&ioengine);
-}
-
-static void fio_exit fio_guasi_unregister(void)
-{
- unregister_ioengine(&ioengine);
-}
-
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