pack-objects.h 2.29 KB
Newer Older
Michael Schubert committed
1
/*
Edward Thomson committed
2
 * Copyright (C) the libgit2 contributors. All rights reserved.
Michael Schubert committed
3 4 5 6 7 8 9 10 11 12 13 14
 *
 * 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"
15
#include "oidmap.h"
16
#include "netops.h"
17
#include "zstream.h"
18
#include "pool.h"
19
#include "indexer.h"
Michael Schubert committed
20 21

#include "git2/oid.h"
22
#include "git2/pack.h"
Michael Schubert committed
23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45

#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;
46 47
	size_t delta_size;
	size_t z_delta_size;
Michael Schubert committed
48 49 50 51 52 53 54

	int written:1,
	    recursing:1,
	    tagged:1,
	    filled:1;
} git_pobject;

55 56 57 58 59 60
typedef struct {
	git_oid id;
	unsigned int uninteresting:1,
		seen:1;
} git_walk_object;

Michael Schubert committed
61 62 63 64
struct git_packbuilder {
	git_repository *repo; /* associated repository */
	git_odb *odb; /* associated object database */

65
	git_hash_ctx ctx;
66
	git_zstream zstream;
Michael Schubert committed
67 68

	uint32_t nr_objects,
69 70 71 72 73
		nr_deltified,
		nr_written,
		nr_remaining;

	size_t nr_alloc;
Michael Schubert committed
74 75 76

	git_pobject *object_list;

77
	git_oidmap *object_ix;
Michael Schubert committed
78

79 80 81
	git_oidmap *walk_objects;
	git_pool object_pool;

Michael Schubert committed
82 83
	git_oid pack_oid; /* hash of written pack */

84 85 86 87 88
	/* synchronization objects */
	git_mutex cache_mutex;
	git_mutex progress_mutex;
	git_cond progress_cond;

Michael Schubert committed
89
	/* configs */
90 91 92 93 94
	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;
Michael Schubert committed
95

96
	unsigned int nr_threads; /* nr of threads to use */
Michael Schubert committed
97

98 99 100 101
	git_packbuilder_progress progress_cb;
	void *progress_cb_payload;
	double last_progress_report_time; /* the time progress was last reported */

Michael Schubert committed
102 103 104 105 106
	bool done;
};

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

107
#endif