зеркало из https://github.com/microsoft/git.git
Merge branch 'jk/packfile-reuse-cleanup'
The way "git pack-objects" reuses objects stored in existing pack to generate its result has been improved. * jk/packfile-reuse-cleanup: pack-bitmap: don't rely on bitmap_git->reuse_objects pack-objects: add checks for duplicate objects pack-objects: improve partial packfile reuse builtin/pack-objects: introduce obj_is_packed() pack-objects: introduce pack.allowPackReuse csum-file: introduce hashfile_total() pack-bitmap: simplify bitmap_has_oid_in_uninteresting() pack-bitmap: uninteresting oid can be outside bitmapped packfile pack-bitmap: introduce bitmap_walk_contains() ewah/bitmap: introduce bitmap_word_alloc() packfile: expose get_delta_base() builtin/pack-objects: report reused packfile objects
This commit is contained in:
Junio C Hamano
Коммит
a14aebeac3
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@ -27,6 +27,13 @@ Note that changing the compression level will not automatically recompress
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all existing objects. You can force recompression by passing the -F option
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to linkgit:git-repack[1].
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pack.allowPackReuse::
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When true, and when reachability bitmaps are enabled,
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pack-objects will try to send parts of the bitmapped packfile
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verbatim. This can reduce memory and CPU usage to serve fetches,
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but might result in sending a slightly larger pack. Defaults to
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true.
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pack.island::
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An extended regular expression configuring a set of delta
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islands. See "DELTA ISLANDS" in linkgit:git-pack-objects[1]
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@ -92,10 +92,11 @@ static struct progress *progress_state;
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static struct packed_git *reuse_packfile;
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static uint32_t reuse_packfile_objects;
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static off_t reuse_packfile_offset;
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static struct bitmap *reuse_packfile_bitmap;
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static int use_bitmap_index_default = 1;
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static int use_bitmap_index = -1;
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static int allow_pack_reuse = 1;
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static enum {
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WRITE_BITMAP_FALSE = 0,
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WRITE_BITMAP_QUIET,
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@ -784,57 +785,185 @@ static struct object_entry **compute_write_order(void)
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return wo;
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}
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static off_t write_reused_pack(struct hashfile *f)
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/*
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* A reused set of objects. All objects in a chunk have the same
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* relative position in the original packfile and the generated
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* packfile.
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*/
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static struct reused_chunk {
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/* The offset of the first object of this chunk in the original
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* packfile. */
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off_t original;
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/* The offset of the first object of this chunk in the generated
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* packfile minus "original". */
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off_t difference;
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} *reused_chunks;
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static int reused_chunks_nr;
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static int reused_chunks_alloc;
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static void record_reused_object(off_t where, off_t offset)
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{
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unsigned char buffer[8192];
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off_t to_write, total;
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int fd;
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if (reused_chunks_nr && reused_chunks[reused_chunks_nr-1].difference == offset)
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return;
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if (!is_pack_valid(reuse_packfile))
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die(_("packfile is invalid: %s"), reuse_packfile->pack_name);
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ALLOC_GROW(reused_chunks, reused_chunks_nr + 1,
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reused_chunks_alloc);
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reused_chunks[reused_chunks_nr].original = where;
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reused_chunks[reused_chunks_nr].difference = offset;
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reused_chunks_nr++;
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}
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fd = git_open(reuse_packfile->pack_name);
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if (fd < 0)
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die_errno(_("unable to open packfile for reuse: %s"),
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reuse_packfile->pack_name);
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if (lseek(fd, sizeof(struct pack_header), SEEK_SET) == -1)
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die_errno(_("unable to seek in reused packfile"));
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if (reuse_packfile_offset < 0)
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reuse_packfile_offset = reuse_packfile->pack_size - the_hash_algo->rawsz;
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total = to_write = reuse_packfile_offset - sizeof(struct pack_header);
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while (to_write) {
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int read_pack = xread(fd, buffer, sizeof(buffer));
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if (read_pack <= 0)
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die_errno(_("unable to read from reused packfile"));
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if (read_pack > to_write)
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read_pack = to_write;
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hashwrite(f, buffer, read_pack);
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to_write -= read_pack;
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/*
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* We don't know the actual number of objects written,
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* only how many bytes written, how many bytes total, and
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* how many objects total. So we can fake it by pretending all
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* objects we are writing are the same size. This gives us a
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* smooth progress meter, and at the end it matches the true
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* answer.
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*/
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written = reuse_packfile_objects *
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(((double)(total - to_write)) / total);
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display_progress(progress_state, written);
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/*
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* Binary search to find the chunk that "where" is in. Note
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* that we're not looking for an exact match, just the first
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* chunk that contains it (which implicitly ends at the start
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* of the next chunk.
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*/
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static off_t find_reused_offset(off_t where)
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{
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int lo = 0, hi = reused_chunks_nr;
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while (lo < hi) {
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int mi = lo + ((hi - lo) / 2);
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if (where == reused_chunks[mi].original)
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return reused_chunks[mi].difference;
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if (where < reused_chunks[mi].original)
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hi = mi;
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else
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lo = mi + 1;
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}
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close(fd);
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written = reuse_packfile_objects;
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display_progress(progress_state, written);
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return reuse_packfile_offset - sizeof(struct pack_header);
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/*
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* The first chunk starts at zero, so we can't have gone below
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* there.
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*/
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assert(lo);
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return reused_chunks[lo-1].difference;
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}
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static void write_reused_pack_one(size_t pos, struct hashfile *out,
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struct pack_window **w_curs)
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{
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off_t offset, next, cur;
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enum object_type type;
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unsigned long size;
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offset = reuse_packfile->revindex[pos].offset;
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next = reuse_packfile->revindex[pos + 1].offset;
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record_reused_object(offset, offset - hashfile_total(out));
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cur = offset;
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type = unpack_object_header(reuse_packfile, w_curs, &cur, &size);
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assert(type >= 0);
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if (type == OBJ_OFS_DELTA) {
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off_t base_offset;
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off_t fixup;
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unsigned char header[MAX_PACK_OBJECT_HEADER];
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unsigned len;
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base_offset = get_delta_base(reuse_packfile, w_curs, &cur, type, offset);
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assert(base_offset != 0);
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/* Convert to REF_DELTA if we must... */
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if (!allow_ofs_delta) {
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int base_pos = find_revindex_position(reuse_packfile, base_offset);
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const unsigned char *base_sha1 =
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nth_packed_object_sha1(reuse_packfile,
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reuse_packfile->revindex[base_pos].nr);
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len = encode_in_pack_object_header(header, sizeof(header),
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OBJ_REF_DELTA, size);
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hashwrite(out, header, len);
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hashwrite(out, base_sha1, 20);
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copy_pack_data(out, reuse_packfile, w_curs, cur, next - cur);
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return;
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}
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/* Otherwise see if we need to rewrite the offset... */
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fixup = find_reused_offset(offset) -
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find_reused_offset(base_offset);
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if (fixup) {
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unsigned char ofs_header[10];
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unsigned i, ofs_len;
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off_t ofs = offset - base_offset - fixup;
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len = encode_in_pack_object_header(header, sizeof(header),
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OBJ_OFS_DELTA, size);
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i = sizeof(ofs_header) - 1;
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ofs_header[i] = ofs & 127;
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while (ofs >>= 7)
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ofs_header[--i] = 128 | (--ofs & 127);
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ofs_len = sizeof(ofs_header) - i;
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hashwrite(out, header, len);
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hashwrite(out, ofs_header + sizeof(ofs_header) - ofs_len, ofs_len);
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copy_pack_data(out, reuse_packfile, w_curs, cur, next - cur);
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return;
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}
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/* ...otherwise we have no fixup, and can write it verbatim */
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}
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copy_pack_data(out, reuse_packfile, w_curs, offset, next - offset);
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}
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static size_t write_reused_pack_verbatim(struct hashfile *out,
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struct pack_window **w_curs)
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{
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size_t pos = 0;
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while (pos < reuse_packfile_bitmap->word_alloc &&
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reuse_packfile_bitmap->words[pos] == (eword_t)~0)
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pos++;
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if (pos) {
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off_t to_write;
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written = (pos * BITS_IN_EWORD);
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to_write = reuse_packfile->revindex[written].offset
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- sizeof(struct pack_header);
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/* We're recording one chunk, not one object. */
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record_reused_object(sizeof(struct pack_header), 0);
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hashflush(out);
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copy_pack_data(out, reuse_packfile, w_curs,
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sizeof(struct pack_header), to_write);
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display_progress(progress_state, written);
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}
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return pos;
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}
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static void write_reused_pack(struct hashfile *f)
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{
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size_t i = 0;
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uint32_t offset;
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struct pack_window *w_curs = NULL;
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if (allow_ofs_delta)
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i = write_reused_pack_verbatim(f, &w_curs);
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for (; i < reuse_packfile_bitmap->word_alloc; ++i) {
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eword_t word = reuse_packfile_bitmap->words[i];
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size_t pos = (i * BITS_IN_EWORD);
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for (offset = 0; offset < BITS_IN_EWORD; ++offset) {
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if ((word >> offset) == 0)
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break;
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offset += ewah_bit_ctz64(word >> offset);
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write_reused_pack_one(pos + offset, f, &w_curs);
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display_progress(progress_state, ++written);
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}
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}
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unuse_pack(&w_curs);
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}
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static const char no_split_warning[] = N_(
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@ -867,11 +996,9 @@ static void write_pack_file(void)
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offset = write_pack_header(f, nr_remaining);
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if (reuse_packfile) {
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off_t packfile_size;
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assert(pack_to_stdout);
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packfile_size = write_reused_pack(f);
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offset += packfile_size;
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write_reused_pack(f);
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offset = hashfile_total(f);
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}
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nr_written = 0;
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@ -1000,6 +1127,10 @@ static int have_duplicate_entry(const struct object_id *oid,
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{
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struct object_entry *entry;
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if (reuse_packfile_bitmap &&
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bitmap_walk_contains(bitmap_git, reuse_packfile_bitmap, oid))
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return 1;
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entry = packlist_find(&to_pack, oid);
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if (!entry)
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return 0;
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@ -2552,6 +2683,13 @@ static void ll_find_deltas(struct object_entry **list, unsigned list_size,
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free(p);
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}
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static int obj_is_packed(const struct object_id *oid)
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{
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return packlist_find(&to_pack, oid) ||
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(reuse_packfile_bitmap &&
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bitmap_walk_contains(bitmap_git, reuse_packfile_bitmap, oid));
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}
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static void add_tag_chain(const struct object_id *oid)
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{
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struct tag *tag;
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@ -2563,7 +2701,7 @@ static void add_tag_chain(const struct object_id *oid)
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* it was included via bitmaps, we would not have parsed it
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* previously).
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*/
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if (packlist_find(&to_pack, oid))
|
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if (obj_is_packed(oid))
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return;
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tag = lookup_tag(the_repository, oid);
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|
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@ -2587,7 +2725,7 @@ static int add_ref_tag(const char *path, const struct object_id *oid, int flag,
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|
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if (starts_with(path, "refs/tags/") && /* is a tag? */
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!peel_ref(path, &peeled) && /* peelable? */
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packlist_find(&to_pack, &peeled)) /* object packed? */
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obj_is_packed(&peeled)) /* object packed? */
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add_tag_chain(oid);
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return 0;
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}
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|
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@ -2655,6 +2793,7 @@ static void prepare_pack(int window, int depth)
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|||
|
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if (nr_deltas && n > 1) {
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unsigned nr_done = 0;
|
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|
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if (progress)
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progress_state = start_progress(_("Compressing objects"),
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nr_deltas);
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|
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@ -2699,6 +2838,10 @@ static int git_pack_config(const char *k, const char *v, void *cb)
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use_bitmap_index_default = git_config_bool(k, v);
|
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return 0;
|
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}
|
||||
if (!strcmp(k, "pack.allowpackreuse")) {
|
||||
allow_pack_reuse = git_config_bool(k, v);
|
||||
return 0;
|
||||
}
|
||||
if (!strcmp(k, "pack.threads")) {
|
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delta_search_threads = git_config_int(k, v);
|
||||
if (delta_search_threads < 0)
|
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|
|
@ -3030,8 +3173,8 @@ static void loosen_unused_packed_objects(void)
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*/
|
||||
static int pack_options_allow_reuse(void)
|
||||
{
|
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return pack_to_stdout &&
|
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allow_ofs_delta &&
|
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return allow_pack_reuse &&
|
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pack_to_stdout &&
|
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!ignore_packed_keep_on_disk &&
|
||||
!ignore_packed_keep_in_core &&
|
||||
(!local || !have_non_local_packs) &&
|
||||
|
|
@ -3048,7 +3191,7 @@ static int get_object_list_from_bitmap(struct rev_info *revs)
|
|||
bitmap_git,
|
||||
&reuse_packfile,
|
||||
&reuse_packfile_objects,
|
||||
&reuse_packfile_offset)) {
|
||||
&reuse_packfile_bitmap)) {
|
||||
assert(reuse_packfile_objects);
|
||||
nr_result += reuse_packfile_objects;
|
||||
display_progress(progress_state, nr_result);
|
||||
|
|
@ -3509,7 +3652,9 @@ int cmd_pack_objects(int argc, const char **argv, const char *prefix)
|
|||
if (progress)
|
||||
fprintf_ln(stderr,
|
||||
_("Total %"PRIu32" (delta %"PRIu32"),"
|
||||
" reused %"PRIu32" (delta %"PRIu32")"),
|
||||
written, written_delta, reused, reused_delta);
|
||||
" reused %"PRIu32" (delta %"PRIu32"),"
|
||||
" pack-reused %"PRIu32),
|
||||
written, written_delta, reused, reused_delta,
|
||||
reuse_packfile_objects);
|
||||
return 0;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -42,6 +42,15 @@ void hashflush(struct hashfile *f);
|
|||
void crc32_begin(struct hashfile *);
|
||||
uint32_t crc32_end(struct hashfile *);
|
||||
|
||||
/*
|
||||
* Returns the total number of bytes fed to the hashfile so far (including ones
|
||||
* that have not been written out to the descriptor yet).
|
||||
*/
|
||||
static inline off_t hashfile_total(struct hashfile *f)
|
||||
{
|
||||
return f->total + f->offset;
|
||||
}
|
||||
|
||||
static inline void hashwrite_u8(struct hashfile *f, uint8_t data)
|
||||
{
|
||||
hashwrite(f, &data, sizeof(data));
|
||||
|
|
|
|||
|
|
@ -22,21 +22,26 @@
|
|||
#define EWAH_MASK(x) ((eword_t)1 << (x % BITS_IN_EWORD))
|
||||
#define EWAH_BLOCK(x) (x / BITS_IN_EWORD)
|
||||
|
||||
struct bitmap *bitmap_new(void)
|
||||
struct bitmap *bitmap_word_alloc(size_t word_alloc)
|
||||
{
|
||||
struct bitmap *bitmap = xmalloc(sizeof(struct bitmap));
|
||||
bitmap->words = xcalloc(32, sizeof(eword_t));
|
||||
bitmap->word_alloc = 32;
|
||||
bitmap->words = xcalloc(word_alloc, sizeof(eword_t));
|
||||
bitmap->word_alloc = word_alloc;
|
||||
return bitmap;
|
||||
}
|
||||
|
||||
struct bitmap *bitmap_new(void)
|
||||
{
|
||||
return bitmap_word_alloc(32);
|
||||
}
|
||||
|
||||
void bitmap_set(struct bitmap *self, size_t pos)
|
||||
{
|
||||
size_t block = EWAH_BLOCK(pos);
|
||||
|
||||
if (block >= self->word_alloc) {
|
||||
size_t old_size = self->word_alloc;
|
||||
self->word_alloc = block * 2;
|
||||
self->word_alloc = block ? block * 2 : 1;
|
||||
REALLOC_ARRAY(self->words, self->word_alloc);
|
||||
memset(self->words + old_size, 0x0,
|
||||
(self->word_alloc - old_size) * sizeof(eword_t));
|
||||
|
|
|
|||
|
|
@ -172,6 +172,7 @@ struct bitmap {
|
|||
};
|
||||
|
||||
struct bitmap *bitmap_new(void);
|
||||
struct bitmap *bitmap_word_alloc(size_t word_alloc);
|
||||
void bitmap_set(struct bitmap *self, size_t pos);
|
||||
int bitmap_get(struct bitmap *self, size_t pos);
|
||||
void bitmap_reset(struct bitmap *self);
|
||||
|
|
|
|||
204
pack-bitmap.c
204
pack-bitmap.c
|
|
@ -326,6 +326,13 @@ failed:
|
|||
munmap(bitmap_git->map, bitmap_git->map_size);
|
||||
bitmap_git->map = NULL;
|
||||
bitmap_git->map_size = 0;
|
||||
|
||||
kh_destroy_oid_map(bitmap_git->bitmaps);
|
||||
bitmap_git->bitmaps = NULL;
|
||||
|
||||
kh_destroy_oid_pos(bitmap_git->ext_index.positions);
|
||||
bitmap_git->ext_index.positions = NULL;
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
|
@ -622,7 +629,7 @@ static void show_objects_for_type(
|
|||
enum object_type object_type,
|
||||
show_reachable_fn show_reach)
|
||||
{
|
||||
size_t pos = 0, i = 0;
|
||||
size_t i = 0;
|
||||
uint32_t offset;
|
||||
|
||||
struct ewah_iterator it;
|
||||
|
|
@ -630,13 +637,15 @@ static void show_objects_for_type(
|
|||
|
||||
struct bitmap *objects = bitmap_git->result;
|
||||
|
||||
if (bitmap_git->reuse_objects == bitmap_git->pack->num_objects)
|
||||
return;
|
||||
|
||||
ewah_iterator_init(&it, type_filter);
|
||||
|
||||
while (i < objects->word_alloc && ewah_iterator_next(&filter, &it)) {
|
||||
for (i = 0; i < objects->word_alloc &&
|
||||
ewah_iterator_next(&filter, &it); i++) {
|
||||
eword_t word = objects->words[i] & filter;
|
||||
size_t pos = (i * BITS_IN_EWORD);
|
||||
|
||||
if (!word)
|
||||
continue;
|
||||
|
||||
for (offset = 0; offset < BITS_IN_EWORD; ++offset) {
|
||||
struct object_id oid;
|
||||
|
|
@ -648,9 +657,6 @@ static void show_objects_for_type(
|
|||
|
||||
offset += ewah_bit_ctz64(word >> offset);
|
||||
|
||||
if (pos + offset < bitmap_git->reuse_objects)
|
||||
continue;
|
||||
|
||||
entry = &bitmap_git->pack->revindex[pos + offset];
|
||||
nth_packed_object_oid(&oid, bitmap_git->pack, entry->nr);
|
||||
|
||||
|
|
@ -659,9 +665,6 @@ static void show_objects_for_type(
|
|||
|
||||
show_reach(&oid, object_type, 0, hash, bitmap_git->pack, entry->offset);
|
||||
}
|
||||
|
||||
pos += BITS_IN_EWORD;
|
||||
i++;
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -768,68 +771,141 @@ cleanup:
|
|||
return NULL;
|
||||
}
|
||||
|
||||
int reuse_partial_packfile_from_bitmap(struct bitmap_index *bitmap_git,
|
||||
struct packed_git **packfile,
|
||||
uint32_t *entries,
|
||||
off_t *up_to)
|
||||
static void try_partial_reuse(struct bitmap_index *bitmap_git,
|
||||
size_t pos,
|
||||
struct bitmap *reuse,
|
||||
struct pack_window **w_curs)
|
||||
{
|
||||
/*
|
||||
* Reuse the packfile content if we need more than
|
||||
* 90% of its objects
|
||||
*/
|
||||
static const double REUSE_PERCENT = 0.9;
|
||||
struct revindex_entry *revidx;
|
||||
off_t offset;
|
||||
enum object_type type;
|
||||
unsigned long size;
|
||||
|
||||
if (pos >= bitmap_git->pack->num_objects)
|
||||
return; /* not actually in the pack */
|
||||
|
||||
revidx = &bitmap_git->pack->revindex[pos];
|
||||
offset = revidx->offset;
|
||||
type = unpack_object_header(bitmap_git->pack, w_curs, &offset, &size);
|
||||
if (type < 0)
|
||||
return; /* broken packfile, punt */
|
||||
|
||||
if (type == OBJ_REF_DELTA || type == OBJ_OFS_DELTA) {
|
||||
off_t base_offset;
|
||||
int base_pos;
|
||||
|
||||
/*
|
||||
* Find the position of the base object so we can look it up
|
||||
* in our bitmaps. If we can't come up with an offset, or if
|
||||
* that offset is not in the revidx, the pack is corrupt.
|
||||
* There's nothing we can do, so just punt on this object,
|
||||
* and the normal slow path will complain about it in
|
||||
* more detail.
|
||||
*/
|
||||
base_offset = get_delta_base(bitmap_git->pack, w_curs,
|
||||
&offset, type, revidx->offset);
|
||||
if (!base_offset)
|
||||
return;
|
||||
base_pos = find_revindex_position(bitmap_git->pack, base_offset);
|
||||
if (base_pos < 0)
|
||||
return;
|
||||
|
||||
/*
|
||||
* We assume delta dependencies always point backwards. This
|
||||
* lets us do a single pass, and is basically always true
|
||||
* due to the way OFS_DELTAs work. You would not typically
|
||||
* find REF_DELTA in a bitmapped pack, since we only bitmap
|
||||
* packs we write fresh, and OFS_DELTA is the default). But
|
||||
* let's double check to make sure the pack wasn't written with
|
||||
* odd parameters.
|
||||
*/
|
||||
if (base_pos >= pos)
|
||||
return;
|
||||
|
||||
/*
|
||||
* And finally, if we're not sending the base as part of our
|
||||
* reuse chunk, then don't send this object either. The base
|
||||
* would come after us, along with other objects not
|
||||
* necessarily in the pack, which means we'd need to convert
|
||||
* to REF_DELTA on the fly. Better to just let the normal
|
||||
* object_entry code path handle it.
|
||||
*/
|
||||
if (!bitmap_get(reuse, base_pos))
|
||||
return;
|
||||
}
|
||||
|
||||
/*
|
||||
* If we got here, then the object is OK to reuse. Mark it.
|
||||
*/
|
||||
bitmap_set(reuse, pos);
|
||||
}
|
||||
|
||||
int reuse_partial_packfile_from_bitmap(struct bitmap_index *bitmap_git,
|
||||
struct packed_git **packfile_out,
|
||||
uint32_t *entries,
|
||||
struct bitmap **reuse_out)
|
||||
{
|
||||
struct bitmap *result = bitmap_git->result;
|
||||
uint32_t reuse_threshold;
|
||||
uint32_t i, reuse_objects = 0;
|
||||
struct bitmap *reuse;
|
||||
struct pack_window *w_curs = NULL;
|
||||
size_t i = 0;
|
||||
uint32_t offset;
|
||||
|
||||
assert(result);
|
||||
|
||||
for (i = 0; i < result->word_alloc; ++i) {
|
||||
if (result->words[i] != (eword_t)~0) {
|
||||
reuse_objects += ewah_bit_ctz64(~result->words[i]);
|
||||
break;
|
||||
while (i < result->word_alloc && result->words[i] == (eword_t)~0)
|
||||
i++;
|
||||
|
||||
/* Don't mark objects not in the packfile */
|
||||
if (i > bitmap_git->pack->num_objects / BITS_IN_EWORD)
|
||||
i = bitmap_git->pack->num_objects / BITS_IN_EWORD;
|
||||
|
||||
reuse = bitmap_word_alloc(i);
|
||||
memset(reuse->words, 0xFF, i * sizeof(eword_t));
|
||||
|
||||
for (; i < result->word_alloc; ++i) {
|
||||
eword_t word = result->words[i];
|
||||
size_t pos = (i * BITS_IN_EWORD);
|
||||
|
||||
for (offset = 0; offset < BITS_IN_EWORD; ++offset) {
|
||||
if ((word >> offset) == 0)
|
||||
break;
|
||||
|
||||
offset += ewah_bit_ctz64(word >> offset);
|
||||
try_partial_reuse(bitmap_git, pos + offset, reuse, &w_curs);
|
||||
}
|
||||
|
||||
reuse_objects += BITS_IN_EWORD;
|
||||
}
|
||||
|
||||
#ifdef GIT_BITMAP_DEBUG
|
||||
{
|
||||
const unsigned char *sha1;
|
||||
struct revindex_entry *entry;
|
||||
unuse_pack(&w_curs);
|
||||
|
||||
entry = &bitmap_git->reverse_index->revindex[reuse_objects];
|
||||
sha1 = nth_packed_object_sha1(bitmap_git->pack, entry->nr);
|
||||
|
||||
fprintf(stderr, "Failed to reuse at %d (%016llx)\n",
|
||||
reuse_objects, result->words[i]);
|
||||
fprintf(stderr, " %s\n", hash_to_hex(sha1));
|
||||
}
|
||||
#endif
|
||||
|
||||
if (!reuse_objects)
|
||||
*entries = bitmap_popcount(reuse);
|
||||
if (!*entries) {
|
||||
bitmap_free(reuse);
|
||||
return -1;
|
||||
|
||||
if (reuse_objects >= bitmap_git->pack->num_objects) {
|
||||
bitmap_git->reuse_objects = *entries = bitmap_git->pack->num_objects;
|
||||
*up_to = -1; /* reuse the full pack */
|
||||
*packfile = bitmap_git->pack;
|
||||
return 0;
|
||||
}
|
||||
|
||||
reuse_threshold = bitmap_popcount(bitmap_git->result) * REUSE_PERCENT;
|
||||
|
||||
if (reuse_objects < reuse_threshold)
|
||||
return -1;
|
||||
|
||||
bitmap_git->reuse_objects = *entries = reuse_objects;
|
||||
*up_to = bitmap_git->pack->revindex[reuse_objects].offset;
|
||||
*packfile = bitmap_git->pack;
|
||||
|
||||
/*
|
||||
* Drop any reused objects from the result, since they will not
|
||||
* need to be handled separately.
|
||||
*/
|
||||
bitmap_and_not(result, reuse);
|
||||
*packfile_out = bitmap_git->pack;
|
||||
*reuse_out = reuse;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int bitmap_walk_contains(struct bitmap_index *bitmap_git,
|
||||
struct bitmap *bitmap, const struct object_id *oid)
|
||||
{
|
||||
int idx;
|
||||
|
||||
if (!bitmap)
|
||||
return 0;
|
||||
|
||||
idx = bitmap_position(bitmap_git, oid);
|
||||
return idx >= 0 && bitmap_get(bitmap, idx);
|
||||
}
|
||||
|
||||
void traverse_bitmap_commit_list(struct bitmap_index *bitmap_git,
|
||||
show_reachable_fn show_reachable)
|
||||
{
|
||||
|
|
@ -1118,16 +1194,6 @@ void free_bitmap_index(struct bitmap_index *b)
|
|||
int bitmap_has_oid_in_uninteresting(struct bitmap_index *bitmap_git,
|
||||
const struct object_id *oid)
|
||||
{
|
||||
int pos;
|
||||
|
||||
if (!bitmap_git)
|
||||
return 0; /* no bitmap loaded */
|
||||
if (!bitmap_git->haves)
|
||||
return 0; /* walk had no "haves" */
|
||||
|
||||
pos = bitmap_position_packfile(bitmap_git, oid);
|
||||
if (pos < 0)
|
||||
return 0;
|
||||
|
||||
return bitmap_get(bitmap_git->haves, pos);
|
||||
return bitmap_git &&
|
||||
bitmap_walk_contains(bitmap_git, bitmap_git->haves, oid);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -3,6 +3,7 @@
|
|||
|
||||
#include "ewah/ewok.h"
|
||||
#include "khash.h"
|
||||
#include "pack.h"
|
||||
#include "pack-objects.h"
|
||||
|
||||
struct commit;
|
||||
|
|
@ -49,10 +50,13 @@ void test_bitmap_walk(struct rev_info *revs);
|
|||
struct bitmap_index *prepare_bitmap_walk(struct rev_info *revs);
|
||||
int reuse_partial_packfile_from_bitmap(struct bitmap_index *,
|
||||
struct packed_git **packfile,
|
||||
uint32_t *entries, off_t *up_to);
|
||||
uint32_t *entries,
|
||||
struct bitmap **reuse_out);
|
||||
int rebuild_existing_bitmaps(struct bitmap_index *, struct packing_data *mapping,
|
||||
kh_oid_map_t *reused_bitmaps, int show_progress);
|
||||
void free_bitmap_index(struct bitmap_index *);
|
||||
int bitmap_walk_contains(struct bitmap_index *,
|
||||
struct bitmap *bitmap, const struct object_id *oid);
|
||||
|
||||
/*
|
||||
* After a traversal has been performed by prepare_bitmap_walk(), this can be
|
||||
|
|
|
|||
10
packfile.c
10
packfile.c
|
|
@ -1162,11 +1162,11 @@ const struct packed_git *has_packed_and_bad(struct repository *r,
|
|||
return NULL;
|
||||
}
|
||||
|
||||
static off_t get_delta_base(struct packed_git *p,
|
||||
struct pack_window **w_curs,
|
||||
off_t *curpos,
|
||||
enum object_type type,
|
||||
off_t delta_obj_offset)
|
||||
off_t get_delta_base(struct packed_git *p,
|
||||
struct pack_window **w_curs,
|
||||
off_t *curpos,
|
||||
enum object_type type,
|
||||
off_t delta_obj_offset)
|
||||
{
|
||||
unsigned char *base_info = use_pack(p, w_curs, *curpos, NULL);
|
||||
off_t base_offset;
|
||||
|
|
|
|||
|
|
@ -151,6 +151,9 @@ void *unpack_entry(struct repository *r, struct packed_git *, off_t, enum object
|
|||
unsigned long unpack_object_header_buffer(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
|
||||
unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
|
||||
int unpack_object_header(struct packed_git *, struct pack_window **, off_t *, unsigned long *);
|
||||
off_t get_delta_base(struct packed_git *p, struct pack_window **w_curs,
|
||||
off_t *curpos, enum object_type type,
|
||||
off_t delta_obj_offset);
|
||||
|
||||
void release_pack_memory(size_t);
|
||||
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче