listen.c

/*
 * 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.
 */

/*
 * listen benchmark
 */


#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <errno.h>

#include "libmicro.h"

#define	FIRSTPORT		12345

static struct sockaddr_in	adds;
static int			sock = -1;

int
benchmark_init()
{
	(void) sprintf(lm_usage, "notes: measures listen()()\n");

	lm_tsdsize = 0;

	return (0);
}

int
benchmark_initrun()
{
	int			j;
	int			opt = 1;
	struct hostent	*host;

	sock = socket(AF_INET, SOCK_STREAM, 0);
	if (sock == -1) {
		perror("socket");
		exit(1);
	}

	if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR,
	    &opt, sizeof (int)) == -1) {
		perror("setsockopt");
		exit(1);
	}

	if ((host = gethostbyname("localhost")) == NULL) {
		perror("gethostbyname");
		exit(1);
	}

	j = FIRSTPORT;
	for (;;) {
		(void) memset(&adds, 0, sizeof (struct sockaddr_in));
		adds.sin_family = AF_INET;
		adds.sin_port = htons(j++);
		(void) memcpy(&adds.sin_addr.s_addr, host->h_addr_list[0],
		    sizeof (struct in_addr));

		if (bind(sock, (struct sockaddr *)&adds,
		    sizeof (struct sockaddr_in)) == 0) {
			break;
		}

		if (errno != EADDRINUSE) {
			perror("bind");
			exit(1);
		}
	}

	return (0);
}

/*ARGSUSED*/
int
benchmark(void *tsd, result_t *res)
{
	int			i;

	for (i = 0; i < lm_optB; i += 2) {
		if (listen(sock, 4) == -1)
			res->re_errors++;
		if (listen(sock, 5) == -1)
			res->re_errors++;
	}
	res->re_count = i;

	return (0);
}