The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/teken/stress/teken_stress.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2008-2009 Ed Schouten <ed@FreeBSD.org>
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  *
   28  * $FreeBSD: releng/12.0/sys/teken/stress/teken_stress.c 326272 2017-11-27 15:23:17Z pfg $
   29  */
   30 
   31 #include <sys/cdefs.h>
   32 
   33 #include <fcntl.h>
   34 #include <inttypes.h>
   35 #include <stdio.h>
   36 #include <stdlib.h>
   37 #include <unistd.h>
   38 
   39 #include <teken.h>
   40 
   41 static tf_bell_t        stress_bell;
   42 static tf_cursor_t      stress_cursor;
   43 static tf_putchar_t     stress_putchar;
   44 static tf_fill_t        stress_fill;
   45 static tf_copy_t        stress_copy;
   46 static tf_param_t       stress_param;
   47 static tf_respond_t     stress_respond;
   48 
   49 static teken_funcs_t tf = {
   50         .tf_bell        = stress_bell,
   51         .tf_cursor      = stress_cursor,
   52         .tf_putchar     = stress_putchar,
   53         .tf_fill        = stress_fill,
   54         .tf_copy        = stress_copy,
   55         .tf_param       = stress_param,
   56         .tf_respond     = stress_respond,
   57 };
   58 
   59 static void
   60 stress_bell(void *s __unused)
   61 {
   62 }
   63 
   64 static void
   65 stress_cursor(void *s __unused, const teken_pos_t *p __unused)
   66 {
   67 }
   68 
   69 static void
   70 stress_putchar(void *s __unused, const teken_pos_t *p __unused,
   71     teken_char_t c __unused, const teken_attr_t *a __unused)
   72 {
   73 }
   74 
   75 static void
   76 stress_fill(void *s __unused, const teken_rect_t *r __unused,
   77     teken_char_t c __unused, const teken_attr_t *a __unused)
   78 {
   79 }
   80 
   81 static void
   82 stress_copy(void *s __unused, const teken_rect_t *r __unused,
   83     const teken_pos_t *p __unused)
   84 {
   85 }
   86 
   87 static void
   88 stress_param(void *s __unused, int cmd __unused, unsigned int value __unused)
   89 {
   90 }
   91 
   92 static void
   93 stress_respond(void *s __unused, const void *buf __unused, size_t len __unused)
   94 {
   95 }
   96 
   97 static const char replacement[] =
   98     { 0x1b, '[', '', '1', '2', '3', '4', '5', '6', '7', '8', '9', ';' };
   99 
  100 int
  101 main(int argc __unused, char *argv[] __unused)
  102 {
  103         teken_t t;
  104         unsigned int i, iteration = 0;
  105         unsigned char buf[2048];
  106 
  107 
  108         teken_init(&t, &tf, NULL);
  109 
  110         for (;;) {
  111                 arc4random_buf(buf, sizeof buf);
  112                 for (i = 0; i < sizeof buf; i++) {
  113                         if (buf[i] >= 0x80)
  114                                 buf[i] =
  115                                     replacement[buf[i] % sizeof replacement];
  116                 }
  117 
  118                 teken_input(&t, buf, sizeof buf);
  119 
  120                 iteration++;
  121                 if ((iteration % 10000) == 0)
  122                         printf("Processed %u frames\n", iteration);
  123         }
  124 }

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