blob: c9c742959902793f34e98f94acb9b61be7a7bb86 [file] [log] [blame]
/*
* 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, 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 int 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 timeval 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;
}
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);
}