65 lines
2.3 KiB
C
65 lines
2.3 KiB
C
|
/***************************************************************************
|
||
|
|
* __________ __ ___.
|
||
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
||
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
||
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
||
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
||
|
|
* \/ \/ \/ \/ \/
|
||
|
|
* $Id$
|
||
|
|
*
|
||
|
|
* Copyright (C) 2023 William Wilgus
|
||
|
|
*
|
||
|
|
* This program 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
|
||
|
|
* of the License, or (at your option) any later version.
|
||
|
|
*
|
||
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
||
|
|
* KIND, either express or implied.
|
||
|
|
*
|
||
|
|
****************************************************************************/
|
||
|
|
|
||
|
|
#ifndef _CHUNKALLOC_H_
|
||
|
|
#define _CHUNKALLOC_H_
|
||
|
|
#include <stdbool.h>
|
||
|
|
#include <string.h>
|
||
|
|
#include "config.h"
|
||
|
|
#include "buflib.h"
|
||
|
|
|
||
|
|
#define CHUNK_ALLOC_INVALID ((size_t)-1)
|
||
|
|
|
||
|
|
struct chunk_alloc_header
|
||
|
|
{
|
||
|
|
size_t chunk_bytes_total; /* total bytes in current chunk */
|
||
|
|
size_t chunk_bytes_free; /* free bytes in current chunk */
|
||
|
|
size_t chunk_size; /* default chunk size */
|
||
|
|
size_t count; /* total chunks possible */
|
||
|
|
size_t current; /* current chunk in use */
|
||
|
|
|
||
|
|
struct buflib_context *context; /* buflib context for all allocations */
|
||
|
|
int chunk_handle; /* data handle of buflib allocated array of struct chunk */
|
||
|
|
};
|
||
|
|
|
||
|
|
void chunk_alloc_free(struct chunk_alloc_header *hdr);
|
||
|
|
|
||
|
|
bool chunk_alloc_init(struct chunk_alloc_header *hdr,
|
||
|
|
struct buflib_context *ctx,
|
||
|
|
size_t chunk_size, size_t max_chunks);
|
||
|
|
|
||
|
|
bool chunk_realloc(struct chunk_alloc_header *hdr,
|
||
|
|
size_t chunk_size, size_t max_chunks);
|
||
|
|
|
||
|
|
void chunk_alloc_finalize(struct chunk_alloc_header *hdr);
|
||
|
|
|
||
|
|
size_t chunk_alloc(struct chunk_alloc_header *hdr, size_t size); /* Returns offset */
|
||
|
|
|
||
|
|
void* chunk_get_data(struct chunk_alloc_header *hdr, size_t offset); /* Returns data */
|
||
|
|
|
||
|
|
void chunk_put_data(struct chunk_alloc_header *hdr, size_t offset);
|
||
|
|
|
||
|
|
static inline bool chunk_alloc_is_initialized(struct chunk_alloc_header *hdr)
|
||
|
|
{
|
||
|
|
return (hdr->chunk_handle > 0);
|
||
|
|
}
|
||
|
|
#endif
|