thodg/libgit2/src/pack-objects.h

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• Hash : 41fb1ca0
  Author :
  Date : 2012-10-29T13:41:14
  

  Reorganize transport architecture (squashed 3)

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• src/pack-objects.h

• /*
   * Copyright (C) 2009-2012 the libgit2 contributors
   *
   * 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 "git2/oid.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;
  	unsigned long delta_size;
  	unsigned long z_delta_size;
  
  	int written:1,
  	    recursing:1,
  	    tagged:1,
  	    filled:1;
  } git_pobject;
  
  struct git_packbuilder {
  	git_repository *repo; /* associated repository */
  	git_odb *odb; /* associated object database */
  
  	git_hash_ctx *ctx;
  
  	uint32_t nr_objects,
  		 nr_alloc,
  		 nr_written,
  		 nr_remaining;
  
  	git_pobject *object_list;
  
  	git_oidmap *object_ix;
  
  	git_oid pack_oid; /* hash of written pack */
  
  	/* synchronization objects */
  	git_mutex cache_mutex;
  	git_mutex progress_mutex;
  	git_cond progress_cond;
  
  	/* configs */
  	unsigned long delta_cache_size;
  	unsigned long max_delta_cache_size;
  	unsigned long cache_max_small_delta_size;
  	unsigned long big_file_threshold;
  	unsigned long window_memory_limit;
  
  	int nr_threads; /* nr of threads to use */
  
  	bool done;
  };
  
  int git_packbuilder_send(git_packbuilder *pb, gitno_socket *s);
  int git_packbuilder_write_buf(git_buf *buf, git_packbuilder *pb);
  
  #endif /* INCLUDE_pack_objects_h__ */
  

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