[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"
#include "../os.h"

#ifdef FIO_HAVE_GUASI

#define GFIO_MIN_THREADS 32

#include <guasi.h>
#include <guasi_syscalls.h>

#ifdef GFIO_DEBUG
#define GDBG_PRINT(a) printf a
#else
#define GDBG_PRINT(a) (void) 0
#endif

#define STFU_GCC(a) a = a


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) {
		fprintf(stderr, "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, max - n, timeo);
		if (r < 0)
			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,
			     unsigned int nr)
{
	struct timeval now;
	struct io_u *io_u = io_us[nr];

	fio_gettime(&now, NULL);
	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()\n"));
	for (i = 0; i < ld->queued_nr; i++) {
		io_u = ld->io_us[i];
		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 {
			fprintf(stderr, "fio_guasi_commit() FAILED: unknow request %d\n",
				io_u->ddir);
		}
		if (io_u->greq != NULL)
			fio_guasi_queued(td, ld->io_us, i);
		else {
			perror("guasi submit");
			fprintf(stderr, "fio_guasi_commit() FAILED: submit failed\n");
			return -1;
		}
	}
	ld->queued_nr = 0;
	GDBG_PRINT(("fio_guasi_commit() -> %d\n", i));

	return 0;
}

static int fio_guasi_cancel(struct thread_data *td, struct io_u *io_u)
{
	struct guasi_data *ld = td->io_ops->data;

	STFU_GCC(ld);
	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;

	GDBG_PRINT(("fio_guasi_cleanup(%p)\n", ld));
	if (ld) {
		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 ((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
609342ff DL	1	/*
	2	* guasi engine
	3	*
	4	* IO engine using the GUASI library.
	5	*
46eaa157 DL	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:
609342ff DL	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	#include "../os.h"
	24
	25	#ifdef FIO_HAVE_GUASI
	26
	27	#define GFIO_MIN_THREADS 32
	28
	29	#include <guasi.h>
	30	#include <guasi_syscalls.h>
	31
	32	#ifdef GFIO_DEBUG
	33	#define GDBG_PRINT(a) printf a
	34	#else
	35	#define GDBG_PRINT(a) (void) 0
	36	#endif
	37
	38	#define STFU_GCC(a) a = a
	39
	40
	41	struct guasi_data {
	42	guasi_t hctx;
	43	int max_reqs;
	44	guasi_req_t *reqs;
	45	struct io_u **io_us;
46eaa157	46	int queued_nr;
609342ff DL	47	int reqs_nr;
	48	};
	49
	50	static int fio_guasi_prep(struct thread_data fio_unused td, struct io_u io_u)
	51	{
609342ff DL	52
609342ff DL	53	GDBG_PRINT(("fio_guasi_prep(%p)\n", io_u));
46eaa157	54	io_u->greq = NULL;
609342ff DL	55
	56	return 0;
	57	}
	58
	59	static struct io_u fio_guasi_event(struct thread_data td, int event)
	60	{
	61	struct guasi_data *ld = td->io_ops->data;
	62	struct io_u *io_u;
	63	struct guasi_reqinfo rinf;
	64
	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);
	68	return NULL;
	69	}
	70	io_u = rinf.asid;
66b83d9a	71	io_u->error = EINPROGRESS;
609342ff	72	GDBG_PRINT(("fio_guasi_event(%d) -> %p\n", event, io_u));
66b83d9a	73	if (rinf.status == GUASI_STATUS_COMPLETE) {
609342ff	74	io_u->error = rinf.result;
66b83d9a DL	75	if (io_u->ddir == DDIR_READ \|\|
	76	io_u->ddir == DDIR_WRITE) {
	77	io_u->error = 0;
	78	if (rinf.result != (long) io_u->xfer_buflen) {
	79	if (rinf.result >= 0)
	80	io_u->resid = io_u->xfer_buflen - rinf.result;
	81	else
	82	io_u->error = rinf.error;
	83	}
	84	}
	85	}
609342ff DL	86
	87	return io_u;
	88	}
	89
	90	static int fio_guasi_getevents(struct thread_data *td, int min, int max,
	91	struct timespec *t)
	92	{
	93	struct guasi_data *ld = td->io_ops->data;
46eaa157	94	int n, r;
609342ff DL	95	long timeo = -1;
	96
	97	GDBG_PRINT(("fio_guasi_getevents(%d, %d)\n", min, max));
	98	if (min > ld->max_reqs)
	99	min = ld->max_reqs;
	100	if (max > ld->max_reqs)
	101	max = ld->max_reqs;
	102	if (t)
	103	timeo = t->tv_sec * 1000L + t->tv_nsec / 1000000L;
46eaa157 DL	104	for (n = 0; n < ld->reqs_nr; n++)
	105	guasi_req_free(ld->reqs[n]);
	106	n = 0;
609342ff DL	107	do {
	108	r = guasi_fetch(ld->hctx, ld->reqs + n, max - n, timeo);
	109	if (r < 0)
	110	break;
	111	n += r;
	112	if (n >= min)
	113	break;
	114	} while (1);
46eaa157	115	ld->reqs_nr = n;
609342ff DL	116	GDBG_PRINT(("fio_guasi_getevents() -> %d\n", n));
	117
	118	return n;
	119	}
	120
	121	static int fio_guasi_queue(struct thread_data td, struct io_u io_u)
	122	{
	123	struct guasi_data *ld = td->io_ops->data;
	124
	125	GDBG_PRINT(("fio_guasi_queue(%p)\n", io_u));
46eaa157	126	if (ld->queued_nr == (int) td->o.iodepth)
609342ff DL	127	return FIO_Q_BUSY;
609342ff DL	128
46eaa157 DL	129	ld->io_us[ld->queued_nr] = io_u;
46eaa157 DL	130	ld->queued_nr++;
609342ff DL	131	return FIO_Q_QUEUED;
	132	}
	133
	134	static void fio_guasi_queued(struct thread_data td, struct io_u *io_us,
	135	unsigned int nr)
	136	{
	137	struct timeval now;
	138	struct io_u *io_u = io_us[nr];
	139
	140	fio_gettime(&now, NULL);
	141	memcpy(&io_u->issue_time, &now, sizeof(now));
	142	io_u_queued(td, io_u);
	143	}
	144
	145	static int fio_guasi_commit(struct thread_data *td)
	146	{
	147	struct guasi_data *ld = td->io_ops->data;
	148	int i;
	149	struct io_u *io_u;
	150	struct fio_file *f;
	151
	152	GDBG_PRINT(("fio_guasi_commit()\n"));
46eaa157	153	for (i = 0; i < ld->queued_nr; i++) {
609342ff DL	154	io_u = ld->io_us[i];
	155	f = io_u->file;
	156	io_u->greq = NULL;
	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,
	160	io_u->offset);
	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,
	164	io_u->offset);
	165	else if (io_u->ddir == DDIR_SYNC)
	166	io_u->greq = guasi__fsync(ld->hctx, ld, io_u, 0, f->fd);
	167	else {
66b83d9a DL	168	fprintf(stderr, "fio_guasi_commit() FAILED: unknow request %d\n",
66b83d9a DL	169	io_u->ddir);
609342ff DL	170	}
	171	if (io_u->greq != NULL)
	172	fio_guasi_queued(td, ld->io_us, i);
46eaa157 DL	173	else {
	174	perror("guasi submit");
	175	fprintf(stderr, "fio_guasi_commit() FAILED: submit failed\n");
	176	return -1;
	177	}
609342ff	178	}
46eaa157	179	ld->queued_nr = 0;
609342ff DL	180	GDBG_PRINT(("fio_guasi_commit() -> %d\n", i));
	181
	182	return 0;
	183	}
	184
	185	static int fio_guasi_cancel(struct thread_data td, struct io_u io_u)
	186	{
	187	struct guasi_data *ld = td->io_ops->data;
	188
	189	STFU_GCC(ld);
46eaa157 DL	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);
609342ff	193
46eaa157	194	return 0;
609342ff DL	195	}
	196
	197	static void fio_guasi_cleanup(struct thread_data *td)
	198	{
	199	struct guasi_data *ld = td->io_ops->data;
	200
46eaa157	201	GDBG_PRINT(("fio_guasi_cleanup(%p)\n", ld));
609342ff DL	202	if (ld) {
	203	guasi_free(ld->hctx);
	204	free(ld->reqs);
	205	free(ld->io_us);
	206	free(ld);
	207	td->io_ops->data = NULL;
	208	}
46eaa157	209	GDBG_PRINT(("fio_guasi_cleanup(%p) DONE\n", ld));
609342ff DL	210	}
	211
	212	static int fio_guasi_init(struct thread_data *td)
	213	{
	214	int maxthr;
	215	struct guasi_data ld = malloc(sizeof(ld));
	216
46eaa157	217	GDBG_PRINT(("fio_guasi_init(): depth=%d\n", td->o.iodepth));
609342ff	218	memset(ld, 0, sizeof(*ld));
46eaa157	219	maxthr = td->o.iodepth > GFIO_MIN_THREADS ? td->o.iodepth: GFIO_MIN_THREADS;
609342ff DL	220	if ((ld->hctx = guasi_create(GFIO_MIN_THREADS, maxthr, 1)) == NULL) {
	221	td_verror(td, errno, "guasi_create");
	222	free(ld);
	223	return 1;
	224	}
46eaa157	225	ld->max_reqs = td->o.iodepth;
609342ff DL	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 *));
46eaa157	229	ld->queued_nr = 0;
609342ff DL	230	ld->reqs_nr = 0;
	231
	232	td->io_ops->data = ld;
46eaa157	233	GDBG_PRINT(("fio_guasi_init(): depth=%d -> %p\n", td->o.iodepth, ld));
609342ff DL	234
	235	return 0;
	236	}
	237
	238	static struct ioengine_ops ioengine = {
	239	.name = "guasi",
	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,
	251	};
	252
	253	#else /* FIO_HAVE_GUASI */
	254
	255	/*
	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.
	259	*/
	260	static int fio_guasi_init(struct thread_data fio_unused *td)
	261	{
	262	fprintf(stderr, "fio: guasi not available\n");
	263	return 1;
	264	}
	265
	266	static struct ioengine_ops ioengine = {
	267	.name = "guasi",
	268	.version = FIO_IOOPS_VERSION,
	269	.init = fio_guasi_init,
	270	};
	271
	272	#endif
	273
	274	static void fio_init fio_guasi_register(void)
	275	{
	276	register_ioengine(&ioengine);
	277	}
	278
	279	static void fio_exit fio_guasi_unregister(void)
	280	{
	281	unregister_ioengine(&ioengine);
	282	}
	283