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/*
* 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 2002 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <strings.h>
#include "libmicro.h"
typedef volatile char vchar_t;
typedef struct {
int ts_once;
vchar_t ** ts_map;
vchar_t ts_foo;
} tsd_t;
#define DEFF "/dev/zero"
#define DEFL 8192
static char *optf = DEFF;
static long long optl = DEFL;
static int optr = 0;
static int optw = 0;
static int opts = 0;
static int fd = -1;
static int anon = 0;
int
benchmark_init()
{
lm_tsdsize = sizeof (tsd_t);
(void) sprintf(lm_optstr, "f:l:rsw");
(void) sprintf(lm_usage,
" [-f file-to-map (default %s)]\n"
" [-l mapping-length (default %d)]\n"
" [-r] (read a byte from each page)\n"
" [-w] (write a byte on each page)\n"
" [-s] (use MAP_SHARED)\n"
"notes: measures munmap()\n",
DEFF, DEFL);
(void) sprintf(lm_header, "%8s %5s", "size", "flags");
return (0);
}
int
benchmark_optswitch(int opt, char *optarg)
{
switch (opt) {
case 'f':
optf = optarg;
anon = strcmp(optf, "MAP_ANON") == 0;
break;
case 'l':
optl = sizetoll(optarg);
break;
case 'r':
optr = 1;
break;
case 's':
opts = 1;
break;
case 'w':
optw = 1;
break;
default:
return (-1);
}
return (0);
}
int
benchmark_initrun()
{
if (!anon)
fd = open(optf, O_RDWR);
return (0);
}
int
benchmark_initbatch(void *tsd)
{
tsd_t *ts = (tsd_t *)tsd;
int i, j;
int errors = 0;
if (ts->ts_once++ == 0) {
ts->ts_map = (vchar_t **)malloc(lm_optB * sizeof (void *));
if (ts->ts_map == NULL) {
errors++;
}
}
for (i = 0; i < lm_optB; i++) {
if (anon) {
ts->ts_map[i] = (vchar_t *)mmap(NULL, optl,
PROT_READ | PROT_WRITE,
MAP_ANON | (opts ? MAP_SHARED : MAP_PRIVATE),
-1, 0L);
} else {
ts->ts_map[i] = (vchar_t *)mmap(NULL, optl,
PROT_READ | PROT_WRITE,
opts ? MAP_SHARED : MAP_PRIVATE,
fd, 0L);
}
if (ts->ts_map[i] == MAP_FAILED) {
errors++;
continue;
}
if (optr) {
for (j = 0; j < optl; j += 4096) {
ts->ts_foo += ts->ts_map[i][j];
}
}
if (optw) {
for (j = 0; j < optl; j += 4096) {
ts->ts_map[i][j] = 1;
}
}
}
return (0);
}
int
benchmark(void *tsd, result_t *res)
{
tsd_t *ts = (tsd_t *)tsd;
int i;
for (i = 0; i < lm_optB; i++) {
if (munmap((void *)ts->ts_map[i], optl) == -1) {
res->re_errors++;
}
}
res->re_count += lm_optB;
return (0);
}
char *
benchmark_result()
{
static char result[256];
char flags[5];
flags[0] = anon ? 'a' : '-';
flags[1] = optr ? 'r' : '-';
flags[2] = optw ? 'w' : '-';
flags[3] = opts ? 's' : '-';
flags[4] = 0;
(void) sprintf(result, "%8lld %5s", optl, flags);
return (result);
}
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