1 files changed, 1 insertions, 540 deletions

diff --git a/object-store.h b/object-store.h
index 5222ee5..1b3e3d7 100644
--- a/object-store.h
+++ b/object-store.h
@@ -1,550 +1,11 @@
 #ifndef OBJECT_STORE_H
 #define OBJECT_STORE_H
 
-#include "cache.h"
-#include "oidmap.h"
-#include "list.h"
-#include "oid-array.h"
-#include "strbuf.h"
-#include "thread-utils.h"
 #include "khash.h"
 #include "dir.h"
-#include "oidtree.h"
-#include "oidset.h"
-
-struct object_directory {
-	struct object_directory *next;
-
-	/*
-	 * Used to store the results of readdir(3) calls when we are OK
-	 * sacrificing accuracy due to races for speed. That includes
-	 * object existence with OBJECT_INFO_QUICK, as well as
-	 * our search for unique abbreviated hashes. Don't use it for tasks
-	 * requiring greater accuracy!
-	 *
-	 * Be sure to call odb_load_loose_cache() before using.
-	 */
-	uint32_t loose_objects_subdir_seen[8]; /* 256 bits */
-	struct oidtree *loose_objects_cache;
-
-	/*
-	 * This is a temporary object store created by the tmp_objdir
-	 * facility. Disable ref updates since the objects in the store
-	 * might be discarded on rollback.
-	 */
-	int disable_ref_updates;
-
-	/*
-	 * This object store is ephemeral, so there is no need to fsync.
-	 */
-	int will_destroy;
-
-	/*
-	 * Path to the alternative object store. If this is a relative path,
-	 * it is relative to the current working directory.
-	 */
-	char *path;
-};
-
-struct input_stream {
-	const void *(*read)(struct input_stream *, unsigned long *len);
-	void *data;
-	int is_finished;
-};
+#include "object-store-ll.h"
 
 KHASH_INIT(odb_path_map, const char * /* key: odb_path */,
 	struct object_directory *, 1, fspathhash, fspatheq)
 
-void prepare_alt_odb(struct repository *r);
-char *compute_alternate_path(const char *path, struct strbuf *err);
-struct object_directory *find_odb(struct repository *r, const char *obj_dir);
-typedef int alt_odb_fn(struct object_directory *, void *);
-int foreach_alt_odb(alt_odb_fn, void*);
-typedef void alternate_ref_fn(const struct object_id *oid, void *);
-void for_each_alternate_ref(alternate_ref_fn, void *);
-
-/*
- * Add the directory to the on-disk alternates file; the new entry will also
- * take effect in the current process.
- */
-void add_to_alternates_file(const char *dir);
-
-/*
- * Add the directory to the in-memory list of alternates (along with any
- * recursive alternates it points to), but do not modify the on-disk alternates
- * file.
- */
-void add_to_alternates_memory(const char *dir);
-
-/*
- * Replace the current writable object directory with the specified temporary
- * object directory; returns the former primary object directory.
- */
-struct object_directory *set_temporary_primary_odb(const char *dir, int will_destroy);
-
-/*
- * Restore a previous ODB replaced by set_temporary_main_odb.
- */
-void restore_primary_odb(struct object_directory *restore_odb, const char *old_path);
-
-/*
- * Populate and return the loose object cache array corresponding to the
- * given object ID.
- */
-struct oidtree *odb_loose_cache(struct object_directory *odb,
-				  const struct object_id *oid);
-
-/* Empty the loose object cache for the specified object directory. */
-void odb_clear_loose_cache(struct object_directory *odb);
-
-/* Clear and free the specified object directory */
-void free_object_directory(struct object_directory *odb);
-
-struct packed_git {
-	struct hashmap_entry packmap_ent;
-	struct packed_git *next;
-	struct list_head mru;
-	struct pack_window *windows;
-	off_t pack_size;
-	const void *index_data;
-	size_t index_size;
-	uint32_t num_objects;
-	uint32_t crc_offset;
-	struct oidset bad_objects;
-	int index_version;
-	time_t mtime;
-	int pack_fd;
-	int index;              /* for builtin/pack-objects.c */
-	unsigned pack_local:1,
-		 pack_keep:1,
-		 pack_keep_in_core:1,
-		 freshened:1,
-		 do_not_close:1,
-		 pack_promisor:1,
-		 multi_pack_index:1,
-		 is_cruft:1;
-	unsigned char hash[GIT_MAX_RAWSZ];
-	struct revindex_entry *revindex;
-	const uint32_t *revindex_data;
-	const uint32_t *revindex_map;
-	size_t revindex_size;
-	/*
-	 * mtimes_map points at the beginning of the memory mapped region of
-	 * this pack's corresponding .mtimes file, and mtimes_size is the size
-	 * of that .mtimes file
-	 */
-	const uint32_t *mtimes_map;
-	size_t mtimes_size;
-	/* something like ".git/objects/pack/xxxxx.pack" */
-	char pack_name[FLEX_ARRAY]; /* more */
-};
-
-struct multi_pack_index;
-
-static inline int pack_map_entry_cmp(const void *unused_cmp_data,
-				     const struct hashmap_entry *entry,
-				     const struct hashmap_entry *entry2,
-				     const void *keydata)
-{
-	const char *key = keydata;
-	const struct packed_git *pg1, *pg2;
-
-	pg1 = container_of(entry, const struct packed_git, packmap_ent);
-	pg2 = container_of(entry2, const struct packed_git, packmap_ent);
-
-	return strcmp(pg1->pack_name, key ? key : pg2->pack_name);
-}
-
-struct raw_object_store {
-	/*
-	 * Set of all object directories; the main directory is first (and
-	 * cannot be NULL after initialization). Subsequent directories are
-	 * alternates.
-	 */
-	struct object_directory *odb;
-	struct object_directory **odb_tail;
-	kh_odb_path_map_t *odb_by_path;
-
-	int loaded_alternates;
-
-	/*
-	 * A list of alternate object directories loaded from the environment;
-	 * this should not generally need to be accessed directly, but will
-	 * populate the "odb" list when prepare_alt_odb() is run.
-	 */
-	char *alternate_db;
-
-	/*
-	 * Objects that should be substituted by other objects
-	 * (see git-replace(1)).
-	 */
-	struct oidmap *replace_map;
-	unsigned replace_map_initialized : 1;
-	pthread_mutex_t replace_mutex; /* protect object replace functions */
-
-	struct commit_graph *commit_graph;
-	unsigned commit_graph_attempted : 1; /* if loading has been attempted */
-
-	/*
-	 * private data
-	 *
-	 * should only be accessed directly by packfile.c and midx.c
-	 */
-	struct multi_pack_index *multi_pack_index;
-
-	/*
-	 * private data
-	 *
-	 * should only be accessed directly by packfile.c
-	 */
-
-	struct packed_git *packed_git;
-	/* A most-recently-used ordered version of the packed_git list. */
-	struct list_head packed_git_mru;
-
-	struct {
-		struct packed_git **packs;
-		unsigned flags;
-	} kept_pack_cache;
-
-	/*
-	 * A map of packfiles to packed_git structs for tracking which
-	 * packs have been loaded already.
-	 */
-	struct hashmap pack_map;
-
-	/*
-	 * A fast, rough count of the number of objects in the repository.
-	 * These two fields are not meant for direct access. Use
-	 * approximate_object_count() instead.
-	 */
-	unsigned long approximate_object_count;
-	unsigned approximate_object_count_valid : 1;
-
-	/*
-	 * Whether packed_git has already been populated with this repository's
-	 * packs.
-	 */
-	unsigned packed_git_initialized : 1;
-};
-
-struct raw_object_store *raw_object_store_new(void);
-void raw_object_store_clear(struct raw_object_store *o);
-
-/*
- * Put in `buf` the name of the file in the local object database that
- * would be used to store a loose object with the specified oid.
- */
-const char *loose_object_path(struct repository *r, struct strbuf *buf,
-			      const struct object_id *oid);
-
-void *map_loose_object(struct repository *r, const struct object_id *oid,
-		       unsigned long *size);
-
-void *read_object_file_extended(struct repository *r,
-				const struct object_id *oid,
-				enum object_type *type,
-				unsigned long *size, int lookup_replace);
-static inline void *repo_read_object_file(struct repository *r,
-					  const struct object_id *oid,
-					  enum object_type *type,
-					  unsigned long *size)
-{
-	return read_object_file_extended(r, oid, type, size, 1);
-}
-#ifndef NO_THE_REPOSITORY_COMPATIBILITY_MACROS
-#define read_object_file(oid, type, size) repo_read_object_file(the_repository, oid, type, size)
-#endif
-
-/* Read and unpack an object file into memory, write memory to an object file */
-int oid_object_info(struct repository *r, const struct object_id *, unsigned long *);
-
-void hash_object_file(const struct git_hash_algo *algo, const void *buf,
-		      unsigned long len, enum object_type type,
-		      struct object_id *oid);
-
-int write_object_file_flags(const void *buf, unsigned long len,
-			    enum object_type type, struct object_id *oid,
-			    unsigned flags);
-static inline int write_object_file(const void *buf, unsigned long len,
-				    enum object_type type, struct object_id *oid)
-{
-	return write_object_file_flags(buf, len, type, oid, 0);
-}
-
-int write_object_file_literally(const void *buf, unsigned long len,
-				const char *type, struct object_id *oid,
-				unsigned flags);
-int stream_loose_object(struct input_stream *in_stream, size_t len,
-			struct object_id *oid);
-
-/*
- * Add an object file to the in-memory object store, without writing it
- * to disk.
- *
- * Callers are responsible for calling write_object_file to record the
- * object in persistent storage before writing any other new objects
- * that reference it.
- */
-int pretend_object_file(void *, unsigned long, enum object_type,
-			struct object_id *oid);
-
-int force_object_loose(const struct object_id *oid, time_t mtime);
-
-/*
- * Open the loose object at path, check its hash, and return the contents,
- * use the "oi" argument to assert things about the object, or e.g. populate its
- * type, and size. If the object is a blob, then "contents" may return NULL,
- * to allow streaming of large blobs.
- *
- * Returns 0 on success, negative on error (details may be written to stderr).
- */
-int read_loose_object(const char *path,
-		      const struct object_id *expected_oid,
-		      struct object_id *real_oid,
-		      void **contents,
-		      struct object_info *oi);
-
-/* Retry packed storage after checking packed and loose storage */
-#define HAS_OBJECT_RECHECK_PACKED 1
-
-/*
- * Returns 1 if the object exists. This function will not lazily fetch objects
- * in a partial clone.
- */
-int has_object(struct repository *r, const struct object_id *oid,
-	       unsigned flags);
-
-/*
- * These macros and functions are deprecated. If checking existence for an
- * object that is likely to be missing and/or whose absence is relatively
- * inconsequential (or is consequential but the caller is prepared to handle
- * it), use has_object(), which has better defaults (no lazy fetch in a partial
- * clone and no rechecking of packed storage). In the unlikely event that a
- * caller needs to assert existence of an object that it fully expects to
- * exist, and wants to trigger a lazy fetch in a partial clone, use
- * oid_object_info_extended() with a NULL struct object_info.
- *
- * These functions can be removed once all callers have migrated to
- * has_object() and/or oid_object_info_extended().
- */
-int repo_has_object_file(struct repository *r, const struct object_id *oid);
-int repo_has_object_file_with_flags(struct repository *r,
-				    const struct object_id *oid, int flags);
-#ifndef NO_THE_REPOSITORY_COMPATIBILITY_MACROS
-#define has_object_file(oid) repo_has_object_file(the_repository, oid)
-#define has_object_file_with_flags(oid, flags) repo_has_object_file_with_flags(the_repository, oid, flags)
-#endif
-
-/*
- * Return true iff an alternate object database has a loose object
- * with the specified name.  This function does not respect replace
- * references.
- */
-int has_loose_object_nonlocal(const struct object_id *);
-
-int has_loose_object(const struct object_id *);
-
-/**
- * format_object_header() is a thin wrapper around s xsnprintf() that
- * writes the initial "<type> <obj-len>" part of the loose object
- * header. It returns the size that snprintf() returns + 1.
- */
-int format_object_header(char *str, size_t size, enum object_type type,
-			 size_t objsize);
-
-void assert_oid_type(const struct object_id *oid, enum object_type expect);
-
-/*
- * Enabling the object read lock allows multiple threads to safely call the
- * following functions in parallel: repo_read_object_file(), read_object_file(),
- * read_object_file_extended(), read_object_with_reference(), read_object(),
- * oid_object_info() and oid_object_info_extended().
- *
- * obj_read_lock() and obj_read_unlock() may also be used to protect other
- * section which cannot execute in parallel with object reading. Since the used
- * lock is a recursive mutex, these sections can even contain calls to object
- * reading functions. However, beware that in these cases zlib inflation won't
- * be performed in parallel, losing performance.
- *
- * TODO: oid_object_info_extended()'s call stack has a recursive behavior. If
- * any of its callees end up calling it, this recursive call won't benefit from
- * parallel inflation.
- */
-void enable_obj_read_lock(void);
-void disable_obj_read_lock(void);
-
-extern int obj_read_use_lock;
-extern pthread_mutex_t obj_read_mutex;
-
-static inline void obj_read_lock(void)
-{
-	if(obj_read_use_lock)
-		pthread_mutex_lock(&obj_read_mutex);
-}
-
-static inline void obj_read_unlock(void)
-{
-	if(obj_read_use_lock)
-		pthread_mutex_unlock(&obj_read_mutex);
-}
-
-struct object_info {
-	/* Request */
-	enum object_type *typep;
-	unsigned long *sizep;
-	off_t *disk_sizep;
-	struct object_id *delta_base_oid;
-	struct strbuf *type_name;
-	void **contentp;
-
-	/* Response */
-	enum {
-		OI_CACHED,
-		OI_LOOSE,
-		OI_PACKED,
-		OI_DBCACHED
-	} whence;
-	union {
-		/*
-		 * struct {
-		 * 	... Nothing to expose in this case
-		 * } cached;
-		 * struct {
-		 * 	... Nothing to expose in this case
-		 * } loose;
-		 */
-		struct {
-			struct packed_git *pack;
-			off_t offset;
-			unsigned int is_delta;
-		} packed;
-	} u;
-};
-
-/*
- * Initializer for a "struct object_info" that wants no items. You may
- * also memset() the memory to all-zeroes.
- */
-#define OBJECT_INFO_INIT { 0 }
-
-/* Invoke lookup_replace_object() on the given hash */
-#define OBJECT_INFO_LOOKUP_REPLACE 1
-/* Allow reading from a loose object file of unknown/bogus type */
-#define OBJECT_INFO_ALLOW_UNKNOWN_TYPE 2
-/* Do not retry packed storage after checking packed and loose storage */
-#define OBJECT_INFO_QUICK 8
-/* Do not check loose object */
-#define OBJECT_INFO_IGNORE_LOOSE 16
-/*
- * Do not attempt to fetch the object if missing (even if fetch_is_missing is
- * nonzero).
- */
-#define OBJECT_INFO_SKIP_FETCH_OBJECT 32
-/*
- * This is meant for bulk prefetching of missing blobs in a partial
- * clone. Implies OBJECT_INFO_SKIP_FETCH_OBJECT and OBJECT_INFO_QUICK
- */
-#define OBJECT_INFO_FOR_PREFETCH (OBJECT_INFO_SKIP_FETCH_OBJECT | OBJECT_INFO_QUICK)
-
-int oid_object_info_extended(struct repository *r,
-			     const struct object_id *,
-			     struct object_info *, unsigned flags);
-
-/*
- * Iterate over the files in the loose-object parts of the object
- * directory "path", triggering the following callbacks:
- *
- *  - loose_object is called for each loose object we find.
- *
- *  - loose_cruft is called for any files that do not appear to be
- *    loose objects. Note that we only look in the loose object
- *    directories "objects/[0-9a-f]{2}/", so we will not report
- *    "objects/foobar" as cruft.
- *
- *  - loose_subdir is called for each top-level hashed subdirectory
- *    of the object directory (e.g., "$OBJDIR/f0"). It is called
- *    after the objects in the directory are processed.
- *
- * Any callback that is NULL will be ignored. Callbacks returning non-zero
- * will end the iteration.
- *
- * In the "buf" variant, "path" is a strbuf which will also be used as a
- * scratch buffer, but restored to its original contents before
- * the function returns.
- */
-typedef int each_loose_object_fn(const struct object_id *oid,
-				 const char *path,
-				 void *data);
-typedef int each_loose_cruft_fn(const char *basename,
-				const char *path,
-				void *data);
-typedef int each_loose_subdir_fn(unsigned int nr,
-				 const char *path,
-				 void *data);
-int for_each_file_in_obj_subdir(unsigned int subdir_nr,
-				struct strbuf *path,
-				each_loose_object_fn obj_cb,
-				each_loose_cruft_fn cruft_cb,
-				each_loose_subdir_fn subdir_cb,
-				void *data);
-int for_each_loose_file_in_objdir(const char *path,
-				  each_loose_object_fn obj_cb,
-				  each_loose_cruft_fn cruft_cb,
-				  each_loose_subdir_fn subdir_cb,
-				  void *data);
-int for_each_loose_file_in_objdir_buf(struct strbuf *path,
-				      each_loose_object_fn obj_cb,
-				      each_loose_cruft_fn cruft_cb,
-				      each_loose_subdir_fn subdir_cb,
-				      void *data);
-
-/* Flags for for_each_*_object() below. */
-enum for_each_object_flags {
-	/* Iterate only over local objects, not alternates. */
-	FOR_EACH_OBJECT_LOCAL_ONLY = (1<<0),
-
-	/* Only iterate over packs obtained from the promisor remote. */
-	FOR_EACH_OBJECT_PROMISOR_ONLY = (1<<1),
-
-	/*
-	 * Visit objects within a pack in packfile order rather than .idx order
-	 */
-	FOR_EACH_OBJECT_PACK_ORDER = (1<<2),
-
-	/* Only iterate over packs that are not marked as kept in-core. */
-	FOR_EACH_OBJECT_SKIP_IN_CORE_KEPT_PACKS = (1<<3),
-
-	/* Only iterate over packs that do not have .keep files. */
-	FOR_EACH_OBJECT_SKIP_ON_DISK_KEPT_PACKS = (1<<4),
-};
-
-/*
- * Iterate over all accessible loose objects without respect to
- * reachability. By default, this includes both local and alternate objects.
- * The order in which objects are visited is unspecified.
- *
- * Any flags specific to packs are ignored.
- */
-int for_each_loose_object(each_loose_object_fn, void *,
-			  enum for_each_object_flags flags);
-
-/*
- * Iterate over all accessible packed objects without respect to reachability.
- * By default, this includes both local and alternate packs.
- *
- * Note that some objects may appear twice if they are found in multiple packs.
- * Each pack is visited in an unspecified order. By default, objects within a
- * pack are visited in pack-idx order (i.e., sorted by oid).
- */
-typedef int each_packed_object_fn(const struct object_id *oid,
-				  struct packed_git *pack,
-				  uint32_t pos,
-				  void *data);
-int for_each_object_in_pack(struct packed_git *p,
-			    each_packed_object_fn, void *data,
-			    enum for_each_object_flags flags);
-int for_each_packed_object(each_packed_object_fn, void *,
-			   enum for_each_object_flags flags);
-
 #endif /* OBJECT_STORE_H */