thodg/got/lib/got_lib_repository.h

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• Hash : 6c414261
  Author :
  Date : 2021-03-30T01:26:42
  

  cap pack file cache size at 1/8 of the current open file desciptor limit

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• lib/got_lib_repository.h

• /*
   * Copyright (c) 2018 Stefan Sperling <stsp@openbsd.org>
   *
   * Permission to use, copy, modify, and distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
   * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   */
  
  #define GOT_GIT_DIR	".git"
  
  /* Mandatory files and directories inside the git directory. */
  #define GOT_OBJECTS_DIR		"objects"
  #define GOT_REFS_DIR		"refs"
  #define GOT_HEAD_FILE		"HEAD"
  #define GOT_GITCONFIG		"config"
  
  /* Other files and directories inside the git directory. */
  #define GOT_FETCH_HEAD_FILE	"FETCH_HEAD"
  #define GOT_ORIG_HEAD_FILE	"ORIG_HEAD"
  #define GOT_OBJECTS_PACK_DIR	"objects/pack"
  #define GOT_PACKED_REFS_FILE	"packed-refs"
  
  #define GOT_PACK_CACHE_SIZE	64
  
  struct got_repository {
  	char *path;
  	char *path_git_dir;
  	int gitdir_fd;
  
  	/* The pack index cache speeds up search for packed objects. */
  	struct got_packidx *packidx_cache[GOT_PACK_CACHE_SIZE];
  
  	/* Open file handles for pack files. */
  	struct got_pack packs[GOT_PACK_CACHE_SIZE];
  
  	/*
  	 * The cache size limit may be lower than GOT_PACK_CACHE_SIZE,
  	 * depending on resource limits.
  	 */
  	int pack_cache_size;
  
  	/* Handles to child processes for reading loose objects. */
  	 struct got_privsep_child privsep_children[5];
  #define GOT_REPO_PRIVSEP_CHILD_OBJECT	0
  #define GOT_REPO_PRIVSEP_CHILD_COMMIT	1
  #define GOT_REPO_PRIVSEP_CHILD_TREE	2
  #define GOT_REPO_PRIVSEP_CHILD_BLOB	3
  #define GOT_REPO_PRIVSEP_CHILD_TAG	4
  
  	/* Caches for open objects. */
  	struct got_object_cache objcache;
  	struct got_object_cache treecache;
  	struct got_object_cache commitcache;
  	struct got_object_cache tagcache;
  
  	/* Settings read from Git configuration files. */
  	int gitconfig_repository_format_version;
  	char *gitconfig_author_name;
  	char *gitconfig_author_email;
  	char *global_gitconfig_author_name;
  	char *global_gitconfig_author_email;
  	int ngitconfig_remotes;
  	struct got_remote_repo *gitconfig_remotes;
  	char *gitconfig_owner;
  	char **extensions;
  	int nextensions;
  
  	/* Settings read from got.conf. */
  	struct got_gotconfig *gotconfig;
  };
  
  const struct got_error*got_repo_cache_object(struct got_repository *,
      struct got_object_id *, struct got_object *);
  struct got_object *got_repo_get_cached_object(struct got_repository *,
      struct got_object_id *);
  const struct got_error*got_repo_cache_tree(struct got_repository *,
      struct got_object_id *, struct got_tree_object *);
  struct got_tree_object *got_repo_get_cached_tree(struct got_repository *,
      struct got_object_id *);
  const struct got_error*got_repo_cache_commit(struct got_repository *,
      struct got_object_id *, struct got_commit_object *);
  struct got_commit_object *got_repo_get_cached_commit(struct got_repository *,
      struct got_object_id *);
  const struct got_error*got_repo_cache_tag(struct got_repository *,
      struct got_object_id *, struct got_tag_object *);
  struct got_tag_object *got_repo_get_cached_tag(struct got_repository *,
      struct got_object_id *);
  const struct got_error *got_repo_search_packidx(struct got_packidx **, int *,
      struct got_repository *, struct got_object_id *);
  const struct got_error *got_repo_cache_pack(struct got_pack **,
      struct got_repository *, const char *, struct got_packidx *);
  

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