contrib/top/top.h

   1 /*
   2  * Copyright (c) 1984 through 2008, William LeFebvre
   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 are met:
   7  *
   8  *     * Redistributions of source code must retain the above copyright
   9  * notice, this list of conditions and the following disclaimer.
  10  *
  11  *     * Redistributions in binary form must reproduce the above
  12  * copyright notice, this list of conditions and the following disclaimer
  13  * in the documentation and/or other materials provided with the
  14  * distribution.
  15  *
  16  *     * Neither the name of William LeFebvre nor the names of other
  17  * contributors may be used to endorse or promote products derived from
  18  * this software without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  23  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  24  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 /*
  34  *  Top - a top users display for Berkeley Unix
  35  *
  36  *  General (global) definitions
  37  */
  38
  39 #ifndef _TOP_H_
  40 #define _TOP_H_
  41
  42 #include <sys/time.h>
  43
  44 /* Maximum number of columns allowed for display */
  45 #define MAX_COLS        255
  46
  47 /* Log base 2 of 1024 is 10 (2^10 == 1024) */
  48 #define LOG1024         10
  49
  50 /* Special atoi routine returns either a non-negative number or one of: */
  51 #define Infinity        -1
  52 #define Invalid         -2
  53
  54 /* maximum number we can have */
  55 #define Largest         0x7fffffff
  56
  57 /*
  58  * The entire display is based on these next numbers being defined as is.
  59  */
  60
  61 #define NUM_AVERAGES    3
  62
  63 struct ext_decl {
  64     int (*f_minibar)(char *, int);
  65     int (*f_display)(char *, int);
  66 };
  67
  68 /*
  69  *  "Table_size" defines the size of the hash tables used to map uid to
  70  *  username.  Things will work best if the number is a prime number.
  71  *  We use a number that should be suitable for most installations.
  72  */
  73 #ifndef Table_size
  74 #define Table_size      8191
  75 #endif
  76
  77 void gettime(struct timeval *);
  78 void quit(int);
  79
  80 int n_cpus;
  81 int enable_ncpus;
  82
  83 #endif /* _TOP_H_ */