spiceparser/memory.h

   1 /********************
   2     This file is part of the software library CADLIB written by Conrad Ziesler
   3     Copyright 2003, Conrad Ziesler, all rights reserved.
   4
   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 as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     This program is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with this program; if not, write to the Free Software
  18     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19
  20 ******************/
  21 /* memory.h, header for private memory allocation routines
  22    Conrad Ziesler
  23 */
  24
  25 #ifndef __MEMORY_H__
  26 #define __MEMORY_H__
  27
  28 #define MEMORY_CHUNKSIZE (1024*16)
  29 #define MEMORY_THRESHOLD  16  /* a block is full if it within this size of full */
  30
  31 typedef struct memory_chain_st
  32 {
  33   struct memory_chain_st *next;
  34   int q;
  35   int qref; /* we maintain an reference count */
  36   char data[MEMORY_CHUNKSIZE];
  37   int magic[4];
  38 }memory_chain_t;
  39 #define MEMORY_MAGIC 0x35dfa315
  40
  41 typedef struct memory_other_st
  42 {
  43   struct memory_other_st *next;
  44 }memory_other_t;
  45
  46 typedef struct memory_head_st
  47 {
  48   memory_chain_t *head,*full;
  49   memory_other_t *others;
  50 }memory_t;
  51
  52 #define MEMORY_INIT { NULL, NULL, NULL }
  53
  54
  55 void *memory_alloc(memory_t *ma, int size);
  56 void memory_free(memory_t *ma, void *vp);
  57 void memory_freeall(memory_t *ma);
  58 void memory_init(memory_t *ma);
  59
  60 #endif
  61
  62
  63