strcpy.c   [plain text]

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms
 * of the Common Development and Distribution License
 * (the "License").  You may not use this file except
 * in compliance with the License.
 *
 * You can obtain a copy of the license at
 * src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing
 * permissions and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL
 * HEADER in each file and include the License file at
 * usr/src/OPENSOLARIS.LICENSE.  If applicable,
 * add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your
 * own identifying information: Portions Copyright [yyyy]
 * [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include "libmicro.h"

static int unaligned = 0;
static int opts = 100;

typedef struct {
	int	ts_once;
	char 	*ts_a;
	char 	*ts_b;
} tsd_t;

int
benchmark_init()
{

	lm_tsdsize = sizeof (tsd_t);

	(void) sprintf(lm_optstr, "s:n");

	(void) sprintf(lm_usage,
	    "       [-s string size (default %d)]\n"
	    "       [-n causes unaligned cmp]\n"
	    "notes: measures strcpy()\n",
	    opts);

	(void) sprintf(lm_header, "%8s", "size");

	return (0);
}

int
benchmark_optswitch(int opt, char *optarg)
{
	switch (opt) {
	case 'n':
		unaligned = 1;
		break;
	case 's':
		opts = sizetoll(optarg);
		break;
	default:
		return (-1);
	}
	return (0);
}

int
benchmark_initbatch(void *tsd)
{
	tsd_t			*ts = (tsd_t *)tsd;
	static char		*demo =
	    "The quick brown fox jumps over the lazy dog.";

	if (ts->ts_once++ == 0) {
		int l = strlen(demo);
		int i;

		ts->ts_a = malloc(opts + 1);
		ts->ts_b = malloc(opts + 1 + unaligned);
		ts->ts_b += unaligned;

		for (i = 0; i < opts; i++) {
			ts->ts_b[i] = demo[i%l];
		}
		ts->ts_b[opts] = 0;
	}
	return (0);
}

int
benchmark(void *tsd, result_t *res)
{
	int			i;
	tsd_t			*ts = (tsd_t *)tsd;

	char *src = ts->ts_a;
	char *src2 = ts->ts_b;

	res->re_errors = 0;

	for (i = 0; i < lm_optB; i += 10) {
		(void) strcpy(src, src2);
		(void) strcpy(src, src2);
		(void) strcpy(src, src2);
		(void) strcpy(src, src2);
		(void) strcpy(src, src2);
		(void) strcpy(src, src2);
		(void) strcpy(src, src2);
		(void) strcpy(src, src2);
		(void) strcpy(src, src2);
		(void) strcpy(src, src2);
	}

	res->re_count = i;

	return (0);
}

char *
benchmark_result()
{
	static char  result[256];

	if (unaligned == 0)
		(void) sprintf(result, "%8d", opts);
	else
		(void) sprintf(result, "%8d <unaligned>", opts);

	return (result);
}