/*

 * 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_pack_objects_h__

#define INCLUDE_pack_objects_h__

#include "common.h"

#include "buffer.h"

#include "hash.h"

#include "oidmap.h"

#include "netops.h"

#include "zstream.h"

#include "pool.h"

#include "indexer.h"

#include "git2/oid.h"

#include "git2/pack.h"

#define GIT_PACK_WINDOW 10 /* number of objects to possibly delta against */

#define GIT_PACK_DEPTH 50 /* max delta depth */

#define GIT_PACK_DELTA_CACHE_SIZE (256 * 1024 * 1024)

#define GIT_PACK_DELTA_CACHE_LIMIT 1000

#define GIT_PACK_BIG_FILE_THRESHOLD (512 * 1024 * 1024)

typedef struct git_pobject {

	git_oid id;

	git_otype type;

	git_off_t offset;

	size_t size;

	unsigned int hash; /* name hint hash */

	struct git_pobject *delta; /* delta base object */

	struct git_pobject *delta_child; /* deltified objects who bases me */

	struct git_pobject *delta_sibling; /* other deltified objects

					    * who uses the same base as

					    * me */

	void *delta_data;

	size_t delta_size;

	size_t z_delta_size;

	int written:1,

	    recursing:1,

	    tagged:1,

	    filled:1;

} git_pobject;

typedef struct {

	git_oid id;

	unsigned int uninteresting:1,

		seen:1;

} git_walk_object;

struct git_packbuilder {

	git_repository *repo; /* associated repository */

	git_odb *odb; /* associated object database */

	git_hash_ctx ctx;

	git_zstream zstream;

	uint32_t nr_objects,

		nr_deltified,

		nr_written,

		nr_remaining;

	size_t nr_alloc;

	git_pobject *object_list;

	git_oidmap *object_ix;

	git_oidmap *walk_objects;

	git_pool object_pool;

	git_oid pack_oid; /* hash of written pack */

	/* synchronization objects */

	git_mutex cache_mutex;

	git_mutex progress_mutex;

	git_cond progress_cond;

	/* configs */

	size_t delta_cache_size;

	size_t max_delta_cache_size;

	size_t cache_max_small_delta_size;

	size_t big_file_threshold;

	size_t window_memory_limit;

	unsigned int nr_threads; /* nr of threads to use */

	git_packbuilder_progress progress_cb;

	void *progress_cb_payload;

	double last_progress_report_time; /* the time progress was last reported */

	bool done;

};

int git_packbuilder_write_buf(git_buf *buf, git_packbuilder *pb);

#endif /* INCLUDE_pack_objects_h__ */