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/* yForth? - Written by Luca Padovani (C) 1996/97
* ------------------------------------------------------------------------
* This software is FreeWare as long as it comes with this header in each
* source file, anyway you can use it or any part of it whatever
* you want. It comes without any warranty, so use it at your own risk.
* ------------------------------------------------------------------------
* Module name: block.h
* Abstract: Block word set header file
*/
#ifdef DECLARE_WORDS
# ifdef PROTOTYPES
# undef PROTOTYPES
# endif
# undef __BLOCK_H__
#else
# ifndef PROTOTYPES
# define PROTOTYPES
# endif
#endif
#ifndef __BLOCK_H__
#define __BLOCK_H__
#include "yforth.h"
#include "macro.h"
/**************************************************************************/
/* VARIABLES **************************************************************/
/**************************************************************************/
#ifdef PROTOTYPES
struct _block_data { /* Entry in the table of blocks */
UCell block_no; /* Block number */
Cell dirty; /* Block updated */
};
struct _block_buffer { /* Simply an array of Char */
Char buffer[BLOCK_SIZE];
};
extern FILE *block_file;
extern struct _block_data *block_data;
extern struct _block_buffer *block_buffer;
extern UCell current_block;
#endif
variable(UCell, b_l_k, "blk")
/**************************************************************************/
/* PROTOTYPES *************************************************************/
/**************************************************************************/
code(block, "block", 0)
code(buffer, "buffer", 0)
code(flush, "flush", 0)
code(load, "load", 0)
code(save_buffers, "save-buffers", 0)
code(update, "update", 0)
#ifdef PROTOTYPES
/**************************************************************************/
/* AUXILIARY FUNCTIONS PROTOTYPES *****************************************/
/**************************************************************************/
int search_block(UCell block_no);
int allocate_block(UCell block_no, int load);
void load_block(UCell block_no, int b);
void save_block(int b);
int open_block_file(char *name);
void close_block_file(void);
#endif
#endif
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