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/*
* Copyright (C) 2009-2011 the libgit2 contributors
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#ifndef INCLUDE_cache_h__
#define INCLUDE_cache_h__
#include "git2/common.h"
#include "git2/oid.h"
#include "git2/odb.h"
#include "thread-utils.h"
#define GIT_DEFAULT_CACHE_SIZE 128
typedef void (*git_cached_obj_freeptr)(void *);
typedef struct {
git_oid oid;
git_atomic refcount;
} git_cached_obj;
typedef struct {
git_cached_obj *ptr;
git_mutex lock;
} cache_node;
typedef struct {
cache_node *nodes;
unsigned int lru_count;
size_t size_mask;
git_cached_obj_freeptr free_obj;
} git_cache;
int git_cache_init(git_cache *cache, size_t size, git_cached_obj_freeptr free_ptr);
void git_cache_free(git_cache *cache);
void *git_cache_try_store(git_cache *cache, void *entry);
void *git_cache_get(git_cache *cache, const git_oid *oid);
GIT_INLINE(int) git_cached_obj_compare(git_cached_obj *obj, const git_oid *oid)
{
return git_oid_cmp(&obj->oid, oid);
}
GIT_INLINE(void) git_cached_obj_incref(git_cached_obj *obj)
{
git_atomic_inc(&obj->refcount);
}
GIT_INLINE(void) git_cached_obj_decref(git_cached_obj *obj, git_cached_obj_freeptr free_obj)
{
if (git_atomic_dec(&obj->refcount) == 0)
free_obj(obj);
}
#endif
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