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  * 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: releng/10.0/sys/teken/stress/teken_stress.c 226100 2011-10-07 12:42:03Z 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 
   39 static tf_bell_t        stress_bell;
   40 static tf_cursor_t      stress_cursor;
   41 static tf_putchar_t     stress_putchar;
   42 static tf_fill_t        stress_fill;
   43 static tf_copy_t        stress_copy;
   44 static tf_param_t       stress_param;
   45 static tf_respond_t     stress_respond;
   46 
   47 static 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 
   57 static void
   58 stress_bell(void *s __unused)
   59 {
   60 }
   61 
   62 static void
   63 stress_cursor(void *s __unused, const teken_pos_t *p __unused)
   64 {
   65 }
   66 
   67 static void
   68 stress_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 
   73 static void
   74 stress_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 
   79 static void
   80 stress_copy(void *s __unused, const teken_rect_t *r __unused,
   81     const teken_pos_t *p __unused)
   82 {
   83 }
   84 
   85 static void
   86 stress_param(void *s __unused, int cmd __unused, unsigned int value __unused)
   87 {
   88 }
   89 
   90 static void
   91 stress_respond(void *s __unused, const void *buf __unused, size_t len __unused)
   92 {
   93 }
   94 
   95 static const char replacement[] =
   96     { 0x1b, '[', '', '1', '2', '3', '4', '5', '6', '7', '8', '9', ';' };
   97 
   98 int
   99 main(int argc __unused, char *argv[] __unused)
  100 {
  101         teken_t t;
  102         unsigned int i, iteration = 0;
  103         unsigned char buf[2048];
  104 
  105 
  106         teken_init(&t, &tf, NULL);
  107 
  108         for (;;) {
  109                 arc4random_buf(buf, sizeof buf);
  110                 for (i = 0; i < sizeof buf; i++) {
  111                         if (buf[i] >= 0x80)
  112                                 buf[i] =
  113                                     replacement[buf[i] % sizeof replacement];
  114                 }
  115 
  116                 teken_input(&t, buf, sizeof buf);
  117 
  118                 iteration++;
  119                 if ((iteration % 10000) == 0)
  120                         printf("Processed %u frames\n", iteration);
  121         }
  122 }

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