engine/mala_globals.c

   1 /*
   2     mala_globals.c - Truely global variables (config vars)
   3
   4   Copyright (C) 2006, Christian Thaeter <chth@gmx.net>
   5
   6   This program is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU General Public License version 2 as
   8   published by the Free Software Foundation.
   9
  10   This program is distributed in the hope that it will be useful,
  11   but WITHOUT ANY WARRANTY; without even the implied warranty of
  12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13   GNU General Public License for more details.
  14
  15   You should have received a copy of the GNU General Public License
  16   along with this program; if not, contact me.
  17
  18 */
  19 \f
  20 /*
  21   Here are rarely needed fine-tuning configuration variables, most of them take
  22   only effect when they are changed before a mala engine is initialized.
  23   Some are const and only for compiletime configuration.
  24   I try to keep reasonable defaults here, usually there should be no reason to change them.
  25 */
  26
  27 #ifdef MALA_TYPES_H
  28 #define MALA_GLOBAL(type, name, value) extern type mala_global_##name
  29 #define MALA_GLOBAL_CONST(type, name, value) extern const type mala_global_##name
  30 #else
  31 #define MALA_GLOBAL(type, name, value) type mala_global_##name = value
  32 #define MALA_GLOBAL_CONST(type, name, value) const type mala_global_##name = value
  33 #endif
  34
  35 /*
  36  * Garbagge Collector configuration
  37  */
  38 //described as:
  39 // how many objects, allocation frequency, performance impact
  40
  41 // few objects, static, noncritical
  42 MALA_GLOBAL (unsigned, bucketfactory_low, 50);
  43 MALA_GLOBAL (unsigned, bucketfactory_high, 70);
  44
  45 // many objects, dynamic, noncritical
  46 MALA_GLOBAL (unsigned, stringsfactory_low, 25);
  47 MALA_GLOBAL (unsigned, stringsfactory_high, 50);
  48
  49 // many objects, dynamic, noncritical
  50 MALA_GLOBAL (unsigned, splayfactory_low, 25);
  51 MALA_GLOBAL (unsigned, splayfactory_high, 50);
  52
  53 // many objects, very dynamic, critical
  54 MALA_GLOBAL (unsigned, stringlistfactory_low, 50);
  55 MALA_GLOBAL (unsigned, stringlistfactory_high, 90);
  56
  57 // some objects, mostly static, noncritical
  58 MALA_GLOBAL (unsigned, actionfactory_low, 10);
  59 MALA_GLOBAL (unsigned, actionfactory_high, 25);
  60
  61 // few objects, dynamic, noncritical
  62 MALA_GLOBAL (unsigned, programfactory_low, 25);
  63 MALA_GLOBAL (unsigned, programfactory_high, 75);
  64
  65 /*
  66  * probabilistic splay tree configuration
  67  */
  68 MALA_GLOBAL_CONST (unsigned, stringbucket_splay_zigzig, 3);
  69 MALA_GLOBAL_CONST (unsigned, stringbucket_splay_zigzag, 0);
  70 MALA_GLOBAL_CONST (unsigned, stringbucket_splay_zig, 6);
  71
  72 /*
  73  * type identifiers for the acogc typesystem
  74  */
  75 MALA_GLOBAL_CONST (char*, type_stringbucket, "mala_stringbucket");
  76 MALA_GLOBAL_CONST (char*, type_string, "mala_string");
  77 MALA_GLOBAL_CONST (char*, type_stringbucketnode, "mala_stringbucketnode");
  78 MALA_GLOBAL_CONST (char*, type_stringlist, "mala_stringlist");
  79 MALA_GLOBAL_CONST (char*, type_action, "mala_action");
  80 MALA_GLOBAL_CONST (char*, type_program, "mala_program");
  81
  82
  83 /*
  84 // Local Variables:
  85 // mode: C
  86 // c-file-style: "gnu"
  87 // End:
  88 // arch-tag: 504325c1-cb9d-44b2-a407-a45e928d8792
  89 // end_of_file
  90 */