/*
 * The cache functions
 *
 * Copyright (C) 2010-2020, Joachim Metz <joachim.metz@gmail.com>
 *
 * Refer to AUTHORS for acknowledgements.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 Lesser General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

#if !defined( _LIBFCACHE_CACHE_H )
#define _LIBFCACHE_CACHE_H

#include <common.h>
#include <types.h>

#include "libfcache_cache_value.h"
#include "libfcache_extern.h"
#include "libfcache_libcdata.h"
#include "libfcache_libcerror.h"
#include "libfcache_types.h"

#if defined( __cplusplus )
extern "C" {
#endif

typedef struct libfcache_internal_cache libfcache_internal_cache_t;

struct libfcache_internal_cache
{
	/* The cache entries array
	 */
	libcdata_array_t *entries_array;

	/* The cache entries list
	 */
	libcdata_list_t *entries_list;

	/* The number of cache values
	 */
	int number_of_cache_values;
};

LIBFCACHE_EXTERN \
int libfcache_cache_initialize(
     libfcache_cache_t **cache,
     int maximum_cache_entries,
     libcerror_error_t **error );

LIBFCACHE_EXTERN \
int libfcache_cache_free(
     libfcache_cache_t **cache,
     libcerror_error_t **error );

LIBFCACHE_EXTERN \
int libfcache_cache_empty(
     libfcache_cache_t *cache,
     libcerror_error_t **error );

LIBFCACHE_EXTERN \
int libfcache_cache_clone(
     libfcache_cache_t **destination_cache,
     libfcache_cache_t *source_cache,
     libcerror_error_t **error );

LIBFCACHE_EXTERN \
int libfcache_cache_resize(
     libfcache_cache_t *cache,
     int maximum_cache_entries,
     libcerror_error_t **error );

LIBFCACHE_EXTERN \
int libfcache_cache_get_number_of_entries(
     libfcache_cache_t *cache,
     int *number_of_entries,
     libcerror_error_t **error );

LIBFCACHE_EXTERN \
int libfcache_cache_get_number_of_cache_values(
     libfcache_cache_t *cache,
     int *number_of_values,
     libcerror_error_t **error );

LIBFCACHE_EXTERN \
int libfcache_cache_clear_value_by_index(
     libfcache_cache_t *cache,
     int cache_entry_index,
     libcerror_error_t **error );

LIBFCACHE_EXTERN \
int libfcache_cache_get_value_by_identifier(
     libfcache_cache_t *cache,
     int file_index,
     off64_t offset,
     int64_t timestamp,
     libfcache_cache_value_t **cache_value,
     libcerror_error_t **error );

LIBFCACHE_EXTERN \
int libfcache_cache_get_value_by_index(
     libfcache_cache_t *cache,
     int cache_entry_index,
     libfcache_cache_value_t **cache_value,
     libcerror_error_t **error );

LIBFCACHE_EXTERN \
int libfcache_cache_set_value_by_identifier(
     libfcache_cache_t *cache,
     int file_index,
     off64_t offset,
     int64_t timestamp,
     intptr_t *value,
     int (*value_free_function)(
            intptr_t **value,
            libcerror_error_t **error ),
     uint8_t flags,
     libcerror_error_t **error );

LIBFCACHE_EXTERN \
int libfcache_cache_set_value_by_index(
     libfcache_cache_t *cache,
     int cache_entry_index,
     int file_index,
     off64_t offset,
     int64_t timestamp,
     intptr_t *value,
     int (*value_free_function)(
            intptr_t **value,
            libcerror_error_t **error ),
     uint8_t flags,
     libcerror_error_t **error );

#if defined( __cplusplus )
}
#endif

#endif /* !defined( _LIBFCACHE_CACHE_H ) */

