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/*
* cache.h: cache vtable interface
*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
* ====================================================================
*/
#ifndef SVN_LIBSVN_SUBR_CACHE_H
#define SVN_LIBSVN_SUBR_CACHE_H
#include "private/svn_cache.h"
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
typedef struct svn_cache__vtable_t {
/* See svn_cache__get(). */
svn_error_t *(*get)(void **value,
svn_boolean_t *found,
void *cache_implementation,
const void *key,
apr_pool_t *result_pool);
/* See svn_cache__has_key(). */
svn_error_t *(*has_key)(svn_boolean_t *found,
void *cache_implementation,
const void *key,
apr_pool_t *scratch_pool);
/* See svn_cache__set(). */
svn_error_t *(*set)(void *cache_implementation,
const void *key,
void *value,
apr_pool_t *scratch_pool);
/* See svn_cache__iter(). */
svn_error_t *(*iter)(svn_boolean_t *completed,
void *cache_implementation,
svn_iter_apr_hash_cb_t func,
void *baton,
apr_pool_t *scratch_pool);
/* See svn_cache__is_cachable(). */
svn_boolean_t (*is_cachable)(void *cache_implementation,
apr_size_t size);
/* See svn_cache__get_partial(). */
svn_error_t *(*get_partial)(void **value,
svn_boolean_t *found,
void *cache_implementation,
const void *key,
svn_cache__partial_getter_func_t func,
void *baton,
apr_pool_t *result_pool);
/* See svn_cache__set_partial(). */
svn_error_t *(*set_partial)(void *cache_implementation,
const void *key,
svn_cache__partial_setter_func_t func,
void *baton,
apr_pool_t *scratch_pool);
/* See svn_cache__get_info(). */
svn_error_t *(*get_info)(void *cache_implementation,
svn_cache__info_t *info,
svn_boolean_t reset,
apr_pool_t *result_pool);
} svn_cache__vtable_t;
struct svn_cache__t {
const svn_cache__vtable_t *vtable;
/* See svn_cache__set_error_handler(). */
svn_cache__error_handler_t error_handler;
void *error_baton;
/* Private data for the cache implementation. */
void *cache_internal;
/* Total number of calls to getters. */
apr_uint64_t reads;
/* Total number of calls to set(). */
apr_uint64_t writes;
/* Total number of getter calls that returned a cached item. */
apr_uint64_t hits;
/* Total number of function calls that returned an error. */
apr_uint64_t failures;
/* Cause all getters to act as though the cache contains no data.
(Currently this never becomes set except in maintainer builds.) */
svn_boolean_t pretend_empty;
};
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* SVN_LIBSVN_SUBR_CACHE_H */
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