Andrew's git - gitweb.git/blob

   1#ifndef PACK_BITMAP_H
   2#define PACK_BITMAP_H
   3
   4#include "ewah/ewok.h"
   5#include "khash.h"
   6#include "pack-objects.h"
   7
   8struct bitmap_disk_entry {
   9        uint32_t object_pos;
  10        uint8_t xor_offset;
  11        uint8_t flags;
  12} __attribute__((packed));
  13
  14struct bitmap_disk_header {
  15        char magic[4];
  16        uint16_t version;
  17        uint16_t options;
  18        uint32_t entry_count;
  19        unsigned char checksum[20];
  20};
  21
  22static const char BITMAP_IDX_SIGNATURE[] = {'B', 'I', 'T', 'M'};
  23
  24#define NEEDS_BITMAP (1u<<22)
  25
  26enum pack_bitmap_opts {
  27        BITMAP_OPT_FULL_DAG = 1,
  28        BITMAP_OPT_HASH_CACHE = 4,
  29};
  30
  31enum pack_bitmap_flags {
  32        BITMAP_FLAG_REUSE = 0x1
  33};
  34
  35typedef int (*show_reachable_fn)(
  36        const unsigned char *sha1,
  37        enum object_type type,
  38        int flags,
  39        uint32_t hash,
  40        struct packed_git *found_pack,
  41        off_t found_offset);
  42
  43int prepare_bitmap_git(void);
  44void count_bitmap_commit_list(uint32_t *commits, uint32_t *trees, uint32_t *blobs, uint32_t *tags);
  45void traverse_bitmap_commit_list(show_reachable_fn show_reachable);
  46void test_bitmap_walk(struct rev_info *revs);
  47char *pack_bitmap_filename(struct packed_git *p);
  48int prepare_bitmap_walk(struct rev_info *revs);
  49int reuse_partial_packfile_from_bitmap(struct packed_git **packfile, uint32_t *entries, off_t *up_to);
  50int rebuild_existing_bitmaps(struct packing_data *mapping, khash_sha1 *reused_bitmaps, int show_progress);
  51
  52void bitmap_writer_show_progress(int show);
  53void bitmap_writer_set_checksum(unsigned char *sha1);
  54void bitmap_writer_build_type_index(struct pack_idx_entry **index, uint32_t index_nr);
  55void bitmap_writer_reuse_bitmaps(struct packing_data *to_pack);
  56void bitmap_writer_select_commits(struct commit **indexed_commits,
  57                unsigned int indexed_commits_nr, int max_bitmaps);
  58void bitmap_writer_build(struct packing_data *to_pack);
  59void bitmap_writer_finish(struct pack_idx_entry **index,
  60                          uint32_t index_nr,
  61                          const char *filename,
  62                          uint16_t options);
  63
  64#endif