thodg/libgit2/src/cache.h

• Show log

  Commit

• Hash : 0c7f49dd
  Author :
  Date : 2017-06-30T13:39:01
  

  Make sure to always include "common.h" first
  
  Next to including several files, our "common.h" header also declares
  various macros which are then used throughout the project. As such, we
  have to make sure to always include this file first in all
  implementation files. Otherwise, we might encounter problems or even
  silent behavioural differences due to macros or defines not being
  defined as they should be. So in fact, our header and implementation
  files should make sure to always include "common.h" first.
  
  This commit does so by establishing a common include pattern. Header
  files inside of "src" will now always include "common.h" as its first
  other file, separated by a newline from all the other includes to make
  it stand out as special. There are two cases for the implementation
  files. If they do have a matching header file, they will always include
  this one first, leading to "common.h" being transitively included as
  first file. If they do not have a matching header file, they instead
  include "common.h" as first file themselves.
  
  This fixes the outlined problems and will become our standard practice
  for header and source files inside of the "src/" from now on.
  

Download

• src/cache.h

• /*
   * Copyright (C) the libgit2 contributors. All rights reserved.
   *
   * 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 "common.h"
  
  #include "git2/common.h"
  #include "git2/oid.h"
  #include "git2/odb.h"
  
  #include "thread-utils.h"
  #include "oidmap.h"
  
  enum {
  	GIT_CACHE_STORE_ANY = 0,
  	GIT_CACHE_STORE_RAW = 1,
  	GIT_CACHE_STORE_PARSED = 2
  };
  
  typedef struct {
  	git_oid    oid;
  	int16_t    type;  /* git_otype value */
  	uint16_t   flags; /* GIT_CACHE_STORE value */
  	size_t     size;
  	git_atomic refcount;
  } git_cached_obj;
  
  typedef struct {
  	git_oidmap *map;
  	git_rwlock  lock;
  	ssize_t     used_memory;
  } git_cache;
  
  extern bool git_cache__enabled;
  extern ssize_t git_cache__max_storage;
  extern git_atomic_ssize git_cache__current_storage;
  
  int git_cache_set_max_object_size(git_otype type, size_t size);
  
  int git_cache_init(git_cache *cache);
  void git_cache_free(git_cache *cache);
  void git_cache_clear(git_cache *cache);
  
  void *git_cache_store_raw(git_cache *cache, git_odb_object *entry);
  void *git_cache_store_parsed(git_cache *cache, git_object *entry);
  
  git_odb_object *git_cache_get_raw(git_cache *cache, const git_oid *oid);
  git_object *git_cache_get_parsed(git_cache *cache, const git_oid *oid);
  void *git_cache_get_any(git_cache *cache, const git_oid *oid);
  
  GIT_INLINE(size_t) git_cache_size(git_cache *cache)
  {
  	return (size_t)git_oidmap_size(cache->map);
  }
  
  GIT_INLINE(void) git_cached_obj_incref(void *_obj)
  {
  	git_cached_obj *obj = _obj;
  	git_atomic_inc(&obj->refcount);
  }
  
  void git_cached_obj_decref(void *_obj);
  
  #endif
  

Download