[fio.git] / engines / guasi.c

/*
 * guasi engine
 *
 * IO engine using the GUASI library.
 *
 * This is currently disabled. To enable it, execute:
 *
 * $ export EXTFLAGS="-DFIO_HAVE_GUASI"
 * $ export EXTLIBS="-lguasi"
 *
 * 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"

#ifdef FIO_HAVE_GUASI

#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, int min, 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;

	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;

	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 (io_u->ddir == DDIR_SYNC)
			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);
		td->io_ops->data = NULL;
	}
	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,
};

#else /* FIO_HAVE_GUASI */

/*
 * When we have a proper configure system in place, we simply wont build
 * and install this io engine. For now install a crippled version that
 * just complains and fails to load.
 */
static int fio_guasi_init(struct thread_data fio_unused *td)
{
	fprintf(stderr, "fio: guasi not available\n");
	return 1;
}

static struct ioengine_ops ioengine = {
	.name		= "guasi",
	.version	= FIO_IOOPS_VERSION,
	.init		= fio_guasi_init,
};

#endif

static void fio_init fio_guasi_register(void)
{
	register_ioengine(&ioengine);
}

static void fio_exit fio_guasi_unregister(void)
{
	unregister_ioengine(&ioengine);
}
Commit	Line	Data
	1	/*
	2	* guasi engine
	3	*
	4	* IO engine using the GUASI library.
	5	*
	6	* This is currently disabled. To enable it, execute:
	7	*
	8	* $ export EXTFLAGS="-DFIO_HAVE_GUASI"
	9	* $ export EXTLIBS="-lguasi"
	10	*
	11	* before running make. You'll need the GUASI lib as well:
	12	*
	13	* http://www.xmailserver.org/guasi-lib.html
	14	*
	15	*/
	16	#include <stdio.h>
	17	#include <stdlib.h>
	18	#include <unistd.h>
	19	#include <errno.h>
	20	#include <assert.h>
	21
	22	#include "../fio.h"
	23
	24	#ifdef FIO_HAVE_GUASI
	25
	26	#define GFIO_MIN_THREADS 32
	27	#ifndef GFIO_MAX_THREADS
	28	#define GFIO_MAX_THREADS 2000
	29	#endif
	30
	31	#include <guasi.h>
	32	#include <guasi_syscalls.h>
	33
	34	#ifdef GFIO_DEBUG
	35	#define GDBG_PRINT(a) printf a
	36	#else
	37	#define GDBG_PRINT(a) (void) 0
	38	#endif
	39
	40	struct guasi_data {
	41	guasi_t hctx;
	42	int max_reqs;
	43	guasi_req_t *reqs;
	44	struct io_u **io_us;
	45	int queued_nr;
	46	int reqs_nr;
	47	};
	48
	49	static int fio_guasi_prep(struct thread_data fio_unused td, struct io_u io_u)
	50	{
	51
	52	GDBG_PRINT(("fio_guasi_prep(%p)\n", io_u));
	53	io_u->greq = NULL;
	54
	55	return 0;
	56	}
	57
	58	static struct io_u fio_guasi_event(struct thread_data td, int event)
	59	{
	60	struct guasi_data *ld = td->io_ops->data;
	61	struct io_u *io_u;
	62	struct guasi_reqinfo rinf;
	63
	64	GDBG_PRINT(("fio_guasi_event(%d)\n", event));
	65	if (guasi_req_info(ld->reqs[event], &rinf) < 0) {
	66	log_err("guasi_req_info(%d) FAILED!\n", event);
	67	return NULL;
	68	}
	69	io_u = rinf.asid;
	70	io_u->error = EINPROGRESS;
	71	GDBG_PRINT(("fio_guasi_event(%d) -> %p\n", event, io_u));
	72	if (rinf.status == GUASI_STATUS_COMPLETE) {
	73	io_u->error = rinf.result;
	74	if (io_u->ddir == DDIR_READ \|\|
	75	io_u->ddir == DDIR_WRITE) {
	76	io_u->error = 0;
	77	if (rinf.result != (long) io_u->xfer_buflen) {
	78	if (rinf.result >= 0)
	79	io_u->resid = io_u->xfer_buflen - rinf.result;
	80	else
	81	io_u->error = rinf.error;
	82	}
	83	}
	84	}
	85
	86	return io_u;
	87	}
	88
	89	static int fio_guasi_getevents(struct thread_data *td, int min, int max,
	90	struct timespec *t)
	91	{
	92	struct guasi_data *ld = td->io_ops->data;
	93	int n, r;
	94	long timeo = -1;
	95
	96	GDBG_PRINT(("fio_guasi_getevents(%d, %d)\n", min, max));
	97	if (min > ld->max_reqs)
	98	min = ld->max_reqs;
	99	if (max > ld->max_reqs)
	100	max = ld->max_reqs;
	101	if (t)
	102	timeo = t->tv_sec * 1000L + t->tv_nsec / 1000000L;
	103	for (n = 0; n < ld->reqs_nr; n++)
	104	guasi_req_free(ld->reqs[n]);
	105	n = 0;
	106	do {
	107	r = guasi_fetch(ld->hctx, ld->reqs + n, min - n,
	108	max - n, timeo);
	109	if (r < 0) {
	110	log_err("guasi_fetch() FAILED! (%d)\n", r);
	111	break;
	112	}
	113	n += r;
	114	if (n >= min)
	115	break;
	116	} while (1);
	117	ld->reqs_nr = n;
	118	GDBG_PRINT(("fio_guasi_getevents() -> %d\n", n));
	119
	120	return n;
	121	}
	122
	123	static int fio_guasi_queue(struct thread_data td, struct io_u io_u)
	124	{
	125	struct guasi_data *ld = td->io_ops->data;
	126
	127	GDBG_PRINT(("fio_guasi_queue(%p)\n", io_u));
	128	if (ld->queued_nr == (int) td->o.iodepth)
	129	return FIO_Q_BUSY;
	130
	131	ld->io_us[ld->queued_nr] = io_u;
	132	ld->queued_nr++;
	133	return FIO_Q_QUEUED;
	134	}
	135
	136	static void fio_guasi_queued(struct thread_data td, struct io_u *io_us, int nr)
	137	{
	138	int i;
	139	struct io_u *io_u;
	140	struct timeval now;
	141
	142	fio_gettime(&now, NULL);
	143	for (i = 0; i < nr; i++) {
	144	io_u = io_us[i];
	145	memcpy(&io_u->issue_time, &now, sizeof(now));
	146	io_u_queued(td, io_u);
	147	}
	148	}
	149
	150	static int fio_guasi_commit(struct thread_data *td)
	151	{
	152	struct guasi_data *ld = td->io_ops->data;
	153	int i;
	154	struct io_u *io_u;
	155	struct fio_file *f;
	156
	157	GDBG_PRINT(("fio_guasi_commit(%d)\n", ld->queued_nr));
	158	for (i = 0; i < ld->queued_nr; i++) {
	159	io_u = ld->io_us[i];
	160	GDBG_PRINT(("fio_guasi_commit(%d) --> %p\n", i, io_u));
	161	f = io_u->file;
	162	io_u->greq = NULL;
	163	if (io_u->ddir == DDIR_READ)
	164	io_u->greq = guasi__pread(ld->hctx, ld, io_u, 0,
	165	f->fd, io_u->xfer_buf, io_u->xfer_buflen,
	166	io_u->offset);
	167	else if (io_u->ddir == DDIR_WRITE)
	168	io_u->greq = guasi__pwrite(ld->hctx, ld, io_u, 0,
	169	f->fd, io_u->xfer_buf, io_u->xfer_buflen,
	170	io_u->offset);
	171	else if (io_u->ddir == DDIR_SYNC)
	172	io_u->greq = guasi__fsync(ld->hctx, ld, io_u, 0, f->fd);
	173	else {
	174	log_err("fio_guasi_commit() FAILED: unknow request %d\n",
	175	io_u->ddir);
	176	}
	177	if (io_u->greq == NULL) {
	178	log_err("fio_guasi_commit() FAILED: submit failed (%s)\n",
	179	strerror(errno));
	180	return -1;
	181	}
	182	}
	183	fio_guasi_queued(td, ld->io_us, i);
	184	ld->queued_nr = 0;
	185	GDBG_PRINT(("fio_guasi_commit() -> %d\n", i));
	186
	187	return 0;
	188	}
	189
	190	static int fio_guasi_cancel(struct thread_data fio_unused *td,
	191	struct io_u *io_u)
	192	{
	193	GDBG_PRINT(("fio_guasi_cancel(%p) req=%p\n", io_u, io_u->greq));
	194	if (io_u->greq != NULL)
	195	guasi_req_cancel(io_u->greq);
	196
	197	return 0;
	198	}
	199
	200	static void fio_guasi_cleanup(struct thread_data *td)
	201	{
	202	struct guasi_data *ld = td->io_ops->data;
	203	int n;
	204
	205	GDBG_PRINT(("fio_guasi_cleanup(%p)\n", ld));
	206	if (ld) {
	207	for (n = 0; n < ld->reqs_nr; n++)
	208	guasi_req_free(ld->reqs[n]);
	209	guasi_free(ld->hctx);
	210	free(ld->reqs);
	211	free(ld->io_us);
	212	free(ld);
	213	td->io_ops->data = NULL;
	214	}
	215	GDBG_PRINT(("fio_guasi_cleanup(%p) DONE\n", ld));
	216	}
	217
	218	static int fio_guasi_init(struct thread_data *td)
	219	{
	220	int maxthr;
	221	struct guasi_data ld = malloc(sizeof(ld));
	222
	223	GDBG_PRINT(("fio_guasi_init(): depth=%d\n", td->o.iodepth));
	224	memset(ld, 0, sizeof(*ld));
	225	maxthr = td->o.iodepth > GFIO_MIN_THREADS ? td->o.iodepth: GFIO_MIN_THREADS;
	226	if (maxthr > GFIO_MAX_THREADS)
	227	maxthr = GFIO_MAX_THREADS;
	228	if ((ld->hctx = guasi_create(GFIO_MIN_THREADS, maxthr, 1)) == NULL) {
	229	td_verror(td, errno, "guasi_create");
	230	free(ld);
	231	return 1;
	232	}
	233	ld->max_reqs = td->o.iodepth;
	234	ld->reqs = malloc(ld->max_reqs * sizeof(guasi_req_t));
	235	ld->io_us = malloc(ld->max_reqs * sizeof(struct io_u *));
	236	memset(ld->io_us, 0, ld->max_reqs * sizeof(struct io_u *));
	237	ld->queued_nr = 0;
	238	ld->reqs_nr = 0;
	239
	240	td->io_ops->data = ld;
	241	GDBG_PRINT(("fio_guasi_init(): depth=%d -> %p\n", td->o.iodepth, ld));
	242
	243	return 0;
	244	}
	245
	246	static struct ioengine_ops ioengine = {
	247	.name = "guasi",
	248	.version = FIO_IOOPS_VERSION,
	249	.init = fio_guasi_init,
	250	.prep = fio_guasi_prep,
	251	.queue = fio_guasi_queue,
	252	.commit = fio_guasi_commit,
	253	.cancel = fio_guasi_cancel,
	254	.getevents = fio_guasi_getevents,
	255	.event = fio_guasi_event,
	256	.cleanup = fio_guasi_cleanup,
	257	.open_file = generic_open_file,
	258	.close_file = generic_close_file,
	259	};
	260
	261	#else /* FIO_HAVE_GUASI */
	262
	263	/*
	264	* When we have a proper configure system in place, we simply wont build
	265	* and install this io engine. For now install a crippled version that
	266	* just complains and fails to load.
	267	*/
	268	static int fio_guasi_init(struct thread_data fio_unused *td)
	269	{
	270	fprintf(stderr, "fio: guasi not available\n");
	271	return 1;
	272	}
	273
	274	static struct ioengine_ops ioengine = {
	275	.name = "guasi",
	276	.version = FIO_IOOPS_VERSION,
	277	.init = fio_guasi_init,
	278	};
	279
	280	#endif
	281
	282	static void fio_init fio_guasi_register(void)
	283	{
	284	register_ioengine(&ioengine);
	285	}
	286
	287	static void fio_exit fio_guasi_unregister(void)
	288	{
	289	unregister_ioengine(&ioengine);
	290	}
	291