X-Git-Url: http://git.ipfire.org/?a=blobdiff_plain;f=commit-graph.c;h=77668629e27dbbae783cfd2364fee78d41bf446d;hb=784ce03d5566194880b022f849bb58711c479ef3;hp=732c81fa1b24db8ebb992b30d2da292c301b140e;hpb=3d11275505694ce4e5256516de1c5dd90e749303;p=thirdparty%2Fgit.git diff --git a/commit-graph.c b/commit-graph.c index 732c81fa1b..77668629e2 100644 --- a/commit-graph.c +++ b/commit-graph.c @@ -24,8 +24,10 @@ #define GRAPH_CHUNKID_OIDLOOKUP 0x4f49444c /* "OIDL" */ #define GRAPH_CHUNKID_DATA 0x43444154 /* "CDAT" */ #define GRAPH_CHUNKID_EXTRAEDGES 0x45444745 /* "EDGE" */ +#define GRAPH_CHUNKID_BLOOMINDEXES 0x42494458 /* "BIDX" */ +#define GRAPH_CHUNKID_BLOOMDATA 0x42444154 /* "BDAT" */ #define GRAPH_CHUNKID_BASE 0x42415345 /* "BASE" */ -#define MAX_NUM_CHUNKS 5 +#define MAX_NUM_CHUNKS 7 #define GRAPH_DATA_WIDTH (the_hash_algo->rawsz + 16) @@ -319,6 +321,32 @@ struct commit_graph *parse_commit_graph(void *graph_map, int fd, chunk_repeated = 1; else graph->chunk_base_graphs = data + chunk_offset; + break; + + case GRAPH_CHUNKID_BLOOMINDEXES: + if (graph->chunk_bloom_indexes) + chunk_repeated = 1; + else + graph->chunk_bloom_indexes = data + chunk_offset; + break; + + case GRAPH_CHUNKID_BLOOMDATA: + if (graph->chunk_bloom_data) + chunk_repeated = 1; + else { + uint32_t hash_version; + graph->chunk_bloom_data = data + chunk_offset; + hash_version = get_be32(data + chunk_offset); + + if (hash_version != 1) + break; + + graph->bloom_filter_settings = xmalloc(sizeof(struct bloom_filter_settings)); + graph->bloom_filter_settings->hash_version = hash_version; + graph->bloom_filter_settings->num_hashes = get_be32(data + chunk_offset + 4); + graph->bloom_filter_settings->bits_per_entry = get_be32(data + chunk_offset + 8); + } + break; } if (chunk_repeated) { @@ -337,6 +365,15 @@ struct commit_graph *parse_commit_graph(void *graph_map, int fd, last_chunk_offset = chunk_offset; } + if (graph->chunk_bloom_indexes && graph->chunk_bloom_data) { + init_bloom_filters(); + } else { + /* We need both the bloom chunks to exist together. Else ignore the data */ + graph->chunk_bloom_indexes = NULL; + graph->chunk_bloom_data = NULL; + graph->bloom_filter_settings = NULL; + } + hashcpy(graph->oid.hash, graph->data + graph->data_len - graph->hash_len); if (verify_commit_graph_lite(graph)) { @@ -1034,6 +1071,59 @@ static void write_graph_chunk_extra_edges(struct hashfile *f, } } +static void write_graph_chunk_bloom_indexes(struct hashfile *f, + struct write_commit_graph_context *ctx) +{ + struct commit **list = ctx->commits.list; + struct commit **last = ctx->commits.list + ctx->commits.nr; + uint32_t cur_pos = 0; + struct progress *progress = NULL; + int i = 0; + + if (ctx->report_progress) + progress = start_delayed_progress( + _("Writing changed paths Bloom filters index"), + ctx->commits.nr); + + while (list < last) { + struct bloom_filter *filter = get_bloom_filter(ctx->r, *list, 0); + cur_pos += filter->len; + display_progress(progress, ++i); + hashwrite_be32(f, cur_pos); + list++; + } + + stop_progress(&progress); +} + +static void write_graph_chunk_bloom_data(struct hashfile *f, + struct write_commit_graph_context *ctx, + const struct bloom_filter_settings *settings) +{ + struct commit **list = ctx->commits.list; + struct commit **last = ctx->commits.list + ctx->commits.nr; + struct progress *progress = NULL; + int i = 0; + + if (ctx->report_progress) + progress = start_delayed_progress( + _("Writing changed paths Bloom filters data"), + ctx->commits.nr); + + hashwrite_be32(f, settings->hash_version); + hashwrite_be32(f, settings->num_hashes); + hashwrite_be32(f, settings->bits_per_entry); + + while (list < last) { + struct bloom_filter *filter = get_bloom_filter(ctx->r, *list, 0); + display_progress(progress, ++i); + hashwrite(f, filter->data, filter->len * sizeof(unsigned char)); + list++; + } + + stop_progress(&progress); +} + static int oid_compare(const void *_a, const void *_b) { const struct object_id *a = (const struct object_id *)_a; @@ -1206,7 +1296,7 @@ static void compute_bloom_filters(struct write_commit_graph_context *ctx) for (i = 0; i < ctx->commits.nr; i++) { struct commit *c = sorted_commits[i]; - struct bloom_filter *filter = get_bloom_filter(ctx->r, c); + struct bloom_filter *filter = get_bloom_filter(ctx->r, c, 1); ctx->total_bloom_filter_data_size += sizeof(unsigned char) * filter->len; display_progress(progress, i + 1); } @@ -1438,6 +1528,7 @@ static int write_commit_graph_file(struct write_commit_graph_context *ctx) struct strbuf progress_title = STRBUF_INIT; int num_chunks = 3; struct object_id file_hash; + const struct bloom_filter_settings bloom_settings = DEFAULT_BLOOM_FILTER_SETTINGS; if (ctx->split) { struct strbuf tmp_file = STRBUF_INIT; @@ -1482,6 +1573,12 @@ static int write_commit_graph_file(struct write_commit_graph_context *ctx) chunk_ids[num_chunks] = GRAPH_CHUNKID_EXTRAEDGES; num_chunks++; } + if (ctx->changed_paths) { + chunk_ids[num_chunks] = GRAPH_CHUNKID_BLOOMINDEXES; + num_chunks++; + chunk_ids[num_chunks] = GRAPH_CHUNKID_BLOOMDATA; + num_chunks++; + } if (ctx->num_commit_graphs_after > 1) { chunk_ids[num_chunks] = GRAPH_CHUNKID_BASE; num_chunks++; @@ -1500,6 +1597,15 @@ static int write_commit_graph_file(struct write_commit_graph_context *ctx) 4 * ctx->num_extra_edges; num_chunks++; } + if (ctx->changed_paths) { + chunk_offsets[num_chunks + 1] = chunk_offsets[num_chunks] + + sizeof(uint32_t) * ctx->commits.nr; + num_chunks++; + + chunk_offsets[num_chunks + 1] = chunk_offsets[num_chunks] + + sizeof(uint32_t) * 3 + ctx->total_bloom_filter_data_size; + num_chunks++; + } if (ctx->num_commit_graphs_after > 1) { chunk_offsets[num_chunks + 1] = chunk_offsets[num_chunks] + hashsz * (ctx->num_commit_graphs_after - 1); @@ -1537,6 +1643,10 @@ static int write_commit_graph_file(struct write_commit_graph_context *ctx) write_graph_chunk_data(f, hashsz, ctx); if (ctx->num_extra_edges) write_graph_chunk_extra_edges(f, ctx); + if (ctx->changed_paths) { + write_graph_chunk_bloom_indexes(f, ctx); + write_graph_chunk_bloom_data(f, ctx, &bloom_settings); + } if (ctx->num_commit_graphs_after > 1 && write_graph_chunk_base(f, ctx)) { return -1; @@ -2184,6 +2294,7 @@ void free_commit_graph(struct commit_graph *g) close(g->graph_fd); } free(g->filename); + free(g->bloom_filter_settings); free(g); }