+++ /dev/null
-/* $Id: memory.h,v 1.8 2002-08-02 19:26:56 adam Exp $
- Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002
- Index Data Aps
-
-This file is part of the Zebra server.
-
-Zebra is free software; you can redistribute it and/or modify it under
-the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
-version.
-
-Zebra is distributed in the hope that it will be useful, but WITHOUT ANY
-WARRANTY; without even the implied warranty of MERCHANTABILITY or
-FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-for more details.
-
-You should have received a copy of the GNU General Public License
-along with Zebra; see the file LICENSE.zebra. If not, write to the
-Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA.
-*/
-
-
-
-#ifndef MEMORY_H
-#define MEMORY_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-extern int is_mbuf_size[3];
-
-typedef unsigned int ISAM_P;
-
-/*
- * Memory buffer. Used to manage records (keys) in memory for
- * reading and insertion/deletion.
- */
-typedef struct is_mbuf
-{
- int refcount;
- int type;
-#define IS_MBUF_TYPE_SMALL 0
-#define IS_MBUF_TYPE_MEDIUM 1
-#define IS_MBUF_TYPE_LARGE 2
- int offset;
- int num;
- int cur_record;
- struct is_mbuf *next;
- char *data; /* dummy */
-} is_mbuf;
-
-/*
- * Structure describing the virtual image of a disk block.
- * (these blocks may grow beyond the blocksize during insertion).
- */
-typedef struct is_mblock
-{
- int num_records; /* number of records */
- int diskpos; /* positive if this block is mapped */
- int nextpos; /* pos of nxt blk. Only valid imm aft. rd. */
- int bread; /* number of bytes read */
- int state; /* state of block in rel. to disk block */
-#define IS_MBSTATE_UNREAD 0 /* block hasn't been read */
-#define IS_MBSTATE_PARTIAL 1 /* block has been partially read */
-#define IS_MBSTATE_CLEAN 2 /* block is clean (unmodified) */
-#define IS_MBSTATE_DIRTY 3 /* block has been modified */
- is_mbuf *cur_mbuf;
- is_mbuf *data; /* data contained in block */
-
- struct is_mblock *next; /* next diskblock */
-} is_mblock;
-
-typedef struct isam_struct *ISAM;
-/*
- * Descriptor for a specific table.
- */
-typedef struct is_mtable
-{
- int num_records; /* total number of records */
- int pos_type; /* blocktype */
- is_mblock *cur_mblock;
- is_mbuf *last_mbuf;
- is_mblock *data; /* blocks contained in this table */
- ISAM is;
-} is_mtable;
-
-is_mblock *xmalloc_mblock();
-is_mbuf *xmalloc_mbuf(int type);
-void xfree_mblock(is_mblock *p);
-void xfree_mblocks(is_mblock *l);
-void xfree_mbuf(is_mbuf *p);
-void xfree_mbufs(is_mbuf *l);
-void xrelease_mblock(is_mblock *p);
-void is_m_establish_tab(ISAM is, is_mtable *tab, ISAM_P pos);
-void is_m_release_tab(is_mtable *tab);
-void is_m_rewind(is_mtable *tab);
-void is_m_replace_record(is_mtable *tab, const void *rec);
-int is_m_write_record(is_mtable *tab, const void *rec);
-void is_m_unread_record(is_mtable *tab);
-int is_m_read_record(is_mtable *tab, void *buf, int keep);
-int is_m_seek_record(is_mtable *tab, const void *rec);
-void is_m_delete_record(is_mtable *tab);
-int is_m_peek_record(is_mtable *tab, void *rec);
-int is_m_read_full(is_mtable *tab, is_mblock *mblock);
-int is_m_num_records(is_mtable *tab);
-
-#ifdef __cplusplus
-}
-#endif
-
-
-#endif