teken_stress.c revision 186681 
1/*-
2 * Copyright (c) 2008-2009 Ed Schouten <ed@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/sys/dev/syscons/teken/teken_stress.c 186681 2009-01-01 13:26:53Z ed $
27 */
28
29#include <sys/cdefs.h>
30
31#include <fcntl.h>
32#include <inttypes.h>
33#include <stdio.h>
34#include <stdlib.h>
35#include <unistd.h>
36
37#include "teken.h"
38
39static tf_bell_t	stress_bell;
40static tf_cursor_t	stress_cursor;
41static tf_putchar_t	stress_putchar;
42static tf_fill_t	stress_fill;
43static tf_copy_t	stress_copy;
44static tf_param_t	stress_param;
45static tf_respond_t	stress_respond;
46
47static teken_funcs_t tf = {
48	.tf_bell	= stress_bell,
49	.tf_cursor	= stress_cursor,
50	.tf_putchar	= stress_putchar,
51	.tf_fill	= stress_fill,
52	.tf_copy	= stress_copy,
53	.tf_param	= stress_param,
54	.tf_respond	= stress_respond,
55};
56
57static void
58stress_bell(void *s __unused)
59{
60}
61
62static void
63stress_cursor(void *s __unused, const teken_pos_t *p __unused)
64{
65}
66
67static void
68stress_putchar(void *s __unused, const teken_pos_t *p __unused,
69    teken_char_t c __unused, const teken_attr_t *a __unused)
70{
71}
72
73static void
74stress_fill(void *s __unused, const teken_rect_t *r __unused,
75    teken_char_t c __unused, const teken_attr_t *a __unused)
76{
77}
78
79static void
80stress_copy(void *s __unused, const teken_rect_t *r __unused,
81    const teken_pos_t *p __unused)
82{
83}
84
85static void
86stress_param(void *s __unused, int cmd __unused, int value __unused)
87{
88}
89
90static void
91stress_respond(void *s __unused, const void *buf __unused, size_t len __unused)
92{
93}
94
95int
96main(int argc __unused, char *argv[] __unused)
97{
98	teken_t t;
99	int rnd;
100	unsigned int iteration = 0;
101	char buf[2048];
102
103	rnd = open("/dev/urandom", O_RDONLY);
104	if (rnd < 0) {
105		perror("/dev/urandom");
106		exit(1);
107	}
108
109	teken_init(&t, &tf, NULL);
110
111	for (;;) {
112		if (read(rnd, buf, sizeof buf) != sizeof buf) {
113			perror("read");
114			exit(1);
115		}
116
117		teken_input(&t, buf, sizeof buf);
118
119		iteration++;
120		if ((iteration % 10000) == 0)
121			printf("Processed %u frames\n", iteration);
122	}
123}
124