thodg/got/lib/got_lib_repository.h

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  Commit

• Author : Stefan Sperling
  Date : 2018-09-11 18:29:31
  Hash : eb463357
  Message : reduce pack cache size; avoids opening more than 128 fds

• 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_PACKIDX_CACHE_SIZE	16
  #define GOT_PACK_CACHE_SIZE	GOT_PACKIDX_CACHE_SIZE
  
  struct got_repository {
  	char *path;
  	char *path_git_dir;
  
  	/* The pack index cache speeds up search for packed objects. */
  	struct got_packidx *packidx_cache[GOT_PACKIDX_CACHE_SIZE];
  
  	/* Open file handles for pack files. */
  	struct got_pack packs[GOT_PACK_CACHE_SIZE];
  
  	/* Handles to child processes for reading loose objects. */
  	 struct got_privsep_child privsep_children[4];
  #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
  
  	/* Caches for open objects. */
  	struct got_object_cache objcache;
  	struct got_object_cache treecache;
  	struct got_object_cache commitcache;
  };
  
  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_packidx(struct got_repository *,
      struct got_packidx *);
  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 *);