76f14b777c
Teach Git to provide a way for users to enable/disable bitmap lookup table extension by providing a config option named 'writeBitmapLookupTable'. Default is false. Also add test to verify writting of lookup table. Mentored-by: Taylor Blau <me@ttaylorr.com> Co-Mentored-by: Kaartic Sivaraam <kaartic.sivaraam@gmail.com> Co-Authored-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Abhradeep Chakraborty <chakrabortyabhradeep79@gmail.com> Reviewed-by: Taylor Blau <me@ttaylorr.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
89 lines
2.9 KiB
C
89 lines
2.9 KiB
C
#ifndef MIDX_H
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#define MIDX_H
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#include "repository.h"
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#include "string-list.h"
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struct object_id;
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struct pack_entry;
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struct repository;
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#define GIT_TEST_MULTI_PACK_INDEX "GIT_TEST_MULTI_PACK_INDEX"
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#define GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP \
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"GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP"
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struct multi_pack_index {
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struct multi_pack_index *next;
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const unsigned char *data;
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size_t data_len;
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const uint32_t *revindex_data;
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const uint32_t *revindex_map;
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size_t revindex_len;
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uint32_t signature;
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unsigned char version;
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unsigned char hash_len;
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unsigned char num_chunks;
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uint32_t num_packs;
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uint32_t num_objects;
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int local;
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const unsigned char *chunk_pack_names;
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const uint32_t *chunk_oid_fanout;
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const unsigned char *chunk_oid_lookup;
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const unsigned char *chunk_object_offsets;
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const unsigned char *chunk_large_offsets;
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const unsigned char *chunk_revindex;
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const char **pack_names;
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struct packed_git **packs;
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char object_dir[FLEX_ARRAY];
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};
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#define MIDX_PROGRESS (1 << 0)
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#define MIDX_WRITE_REV_INDEX (1 << 1)
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#define MIDX_WRITE_BITMAP (1 << 2)
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#define MIDX_WRITE_BITMAP_HASH_CACHE (1 << 3)
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#define MIDX_WRITE_BITMAP_LOOKUP_TABLE (1 << 4)
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const unsigned char *get_midx_checksum(struct multi_pack_index *m);
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void get_midx_filename(struct strbuf *out, const char *object_dir);
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void get_midx_rev_filename(struct strbuf *out, struct multi_pack_index *m);
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struct multi_pack_index *load_multi_pack_index(const char *object_dir, int local);
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int prepare_midx_pack(struct repository *r, struct multi_pack_index *m, uint32_t pack_int_id);
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int bsearch_midx(const struct object_id *oid, struct multi_pack_index *m, uint32_t *result);
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off_t nth_midxed_offset(struct multi_pack_index *m, uint32_t pos);
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uint32_t nth_midxed_pack_int_id(struct multi_pack_index *m, uint32_t pos);
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struct object_id *nth_midxed_object_oid(struct object_id *oid,
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struct multi_pack_index *m,
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uint32_t n);
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int fill_midx_entry(struct repository *r, const struct object_id *oid, struct pack_entry *e, struct multi_pack_index *m);
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int midx_contains_pack(struct multi_pack_index *m, const char *idx_or_pack_name);
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int prepare_multi_pack_index_one(struct repository *r, const char *object_dir, int local);
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/*
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* Variant of write_midx_file which writes a MIDX containing only the packs
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* specified in packs_to_include.
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*/
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int write_midx_file(const char *object_dir,
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const char *preferred_pack_name,
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const char *refs_snapshot,
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unsigned flags);
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int write_midx_file_only(const char *object_dir,
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struct string_list *packs_to_include,
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const char *preferred_pack_name,
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const char *refs_snapshot,
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unsigned flags);
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void clear_midx_file(struct repository *r);
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int verify_midx_file(struct repository *r, const char *object_dir, unsigned flags);
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int expire_midx_packs(struct repository *r, const char *object_dir, unsigned flags);
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int midx_repack(struct repository *r, const char *object_dir, size_t batch_size, unsigned flags);
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void close_midx(struct multi_pack_index *m);
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#endif
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