midx.h

   1 #ifndef MIDX_H
   2 #define MIDX_H
   3
   4 #include "repository.h"
   5
   6 struct object_id;
   7 struct pack_entry;
   8 struct repository;
   9
  10 #define GIT_TEST_MULTI_PACK_INDEX "GIT_TEST_MULTI_PACK_INDEX"
  11
  12 struct multi_pack_index {
  13         struct multi_pack_index *next;
  14
  15         const unsigned char *data;
  16         size_t data_len;
  17
  18         const uint32_t *revindex_data;
  19         const uint32_t *revindex_map;
  20         size_t revindex_len;
  21
  22         uint32_t signature;
  23         unsigned char version;
  24         unsigned char hash_len;
  25         unsigned char num_chunks;
  26         uint32_t num_packs;
  27         uint32_t num_objects;
  28
  29         int local;
  30
  31         const unsigned char *chunk_pack_names;
  32         const uint32_t *chunk_oid_fanout;
  33         const unsigned char *chunk_oid_lookup;
  34         const unsigned char *chunk_object_offsets;
  35         const unsigned char *chunk_large_offsets;
  36
  37         const char **pack_names;
  38         struct packed_git **packs;
  39         char object_dir[FLEX_ARRAY];
  40 };
  41
  42 #define MIDX_PROGRESS     (1 << 0)
  43 #define MIDX_WRITE_REV_INDEX (1 << 1)
  44
  45 const unsigned char *get_midx_checksum(struct multi_pack_index *m);
  46 char *get_midx_filename(const char *object_dir);
  47 char *get_midx_rev_filename(struct multi_pack_index *m);
  48
  49 struct multi_pack_index *load_multi_pack_index(const char *object_dir, int local);
  50 int prepare_midx_pack(struct repository *r, struct multi_pack_index *m, uint32_t pack_int_id);
  51 int bsearch_midx(const struct object_id *oid, struct multi_pack_index *m, uint32_t *result);
  52 off_t nth_midxed_offset(struct multi_pack_index *m, uint32_t pos);
  53 uint32_t nth_midxed_pack_int_id(struct multi_pack_index *m, uint32_t pos);
  54 struct object_id *nth_midxed_object_oid(struct object_id *oid,
  55                                         struct multi_pack_index *m,
  56                                         uint32_t n);
  57 int fill_midx_entry(struct repository *r, const struct object_id *oid, struct pack_entry *e, struct multi_pack_index *m);
  58 int midx_contains_pack(struct multi_pack_index *m, const char *idx_or_pack_name);
  59 int prepare_multi_pack_index_one(struct repository *r, const char *object_dir, int local);
  60
  61 int write_midx_file(const char *object_dir, const char *preferred_pack_name, unsigned flags);
  62 void clear_midx_file(struct repository *r);
  63 int verify_midx_file(struct repository *r, const char *object_dir, unsigned flags);
  64 int expire_midx_packs(struct repository *r, const char *object_dir, unsigned flags);
  65 int midx_repack(struct repository *r, const char *object_dir, size_t batch_size, unsigned flags);
  66
  67 void close_midx(struct multi_pack_index *m);
  68
  69 #endif