src/cache.h

   1 /*
   2  * Copyright (C) the libgit2 contributors. All rights reserved.
   3  *
   4  * This file is part of libgit2, distributed under the GNU GPL v2 with
   5  * a Linking Exception. For full terms see the included COPYING file.
   6  */
   7 #ifndef INCLUDE_cache_h__
   8 #define INCLUDE_cache_h__
   9
  10 #include "git2/common.h"
  11 #include "git2/oid.h"
  12 #include "git2/odb.h"
  13
  14 #include "thread-utils.h"
  15 #include "oidmap.h"
  16
  17 enum {
  18         GIT_CACHE_STORE_ANY = 0,
  19         GIT_CACHE_STORE_RAW = 1,
  20         GIT_CACHE_STORE_PARSED = 2
  21 };
  22
  23 typedef struct {
  24         git_oid    oid;
  25         int16_t    type;  /* git_otype value */
  26         uint16_t   flags; /* GIT_CACHE_STORE value */
  27         size_t     size;
  28         git_atomic refcount;
  29 } git_cached_obj;
  30
  31 typedef struct {
  32         git_oidmap *map;
  33         git_mutex   lock;
  34         size_t      used_memory;
  35 } git_cache;
  36
  37 extern bool git_cache__enabled;
  38 extern size_t git_cache__max_storage;
  39
  40 int git_cache_set_max_object_size(git_otype type, size_t size);
  41
  42 int git_cache_init(git_cache *cache);
  43 void git_cache_free(git_cache *cache);
  44
  45 void *git_cache_store_raw(git_cache *cache, git_odb_object *entry);
  46 void *git_cache_store_parsed(git_cache *cache, git_object *entry);
  47
  48 git_odb_object *git_cache_get_raw(git_cache *cache, const git_oid *oid);
  49 git_object *git_cache_get_parsed(git_cache *cache, const git_oid *oid);
  50 void *git_cache_get_any(git_cache *cache, const git_oid *oid);
  51
  52 GIT_INLINE(size_t) git_cache_size(git_cache *cache)
  53 {
  54         return (size_t)kh_size(cache->map);
  55 }
  56
  57 GIT_INLINE(void) git_cached_obj_incref(void *_obj)
  58 {
  59         git_cached_obj *obj = _obj;
  60         git_atomic_inc(&obj->refcount);
  61 }
  62
  63 void git_cached_obj_decref(void *_obj);
  64
  65 #endif