gdb/bcache.h

   1 /* Include file cached obstack implementation.
   2    Written by Fred Fish (fnf@cygnus.com)
   3    Copyright 1995 Free Software Foundation, Inc.
   4
   5 This file is part of GDB.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21 #ifndef BCACHE_H
  22 #define BCACHE_H 1
  23
  24 #define BCACHE_HASHLENGTH       12      /* Number of bits in hash value */
  25 #define BCACHE_HASHSIZE (1 << BCACHE_HASHLENGTH)
  26 #define BCACHE_MAXLENGTH        128
  27
  28 struct hashlink {
  29   struct hashlink *next;
  30   char data[1];
  31 };
  32
  33 struct bcache {
  34   struct obstack cache;
  35   struct hashlink **indextable[BCACHE_MAXLENGTH];
  36   int cache_hits;
  37   int cache_misses;
  38   int cache_bytes;
  39   int cache_savings;
  40   int bcache_overflows;
  41 };
  42
  43 extern void *
  44 bcache PARAMS ((void *bytes, int count, struct bcache *bcachep));
  45
  46 #endif /* BCACHE_H */