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ecf7fc600a
The Bloom filter used for path limited history traversal was broken on systems whose "char" is unsigned; update the implementation and bump the format version to 2. * tb/path-filter-fix: bloom: introduce `deinit_bloom_filters()` commit-graph: reuse existing Bloom filters where possible object.h: fix mis-aligned flag bits table commit-graph: new Bloom filter version that fixes murmur3 commit-graph: unconditionally load Bloom filters bloom: prepare to discard incompatible Bloom filters bloom: annotate filters with hash version repo-settings: introduce commitgraph.changedPathsVersion t4216: test changed path filters with high bit paths t/helper/test-read-graph: implement `bloom-filters` mode bloom.h: make `load_bloom_filter_from_graph()` public t/helper/test-read-graph.c: extract `dump_graph_info()` gitformat-commit-graph: describe version 2 of BDAT commit-graph: ensure Bloom filters are read with consistent settings revision.c: consult Bloom filters for root commits t/t4216-log-bloom.sh: harden `test_bloom_filters_not_used()`
104 lines
2.4 KiB
C
104 lines
2.4 KiB
C
#define USE_THE_REPOSITORY_VARIABLE
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#include "test-tool.h"
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#include "commit-graph.h"
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#include "repository.h"
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#include "object-store-ll.h"
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#include "bloom.h"
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#include "setup.h"
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static void dump_graph_info(struct commit_graph *graph)
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{
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printf("header: %08x %d %d %d %d\n",
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ntohl(*(uint32_t*)graph->data),
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*(unsigned char*)(graph->data + 4),
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*(unsigned char*)(graph->data + 5),
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*(unsigned char*)(graph->data + 6),
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*(unsigned char*)(graph->data + 7));
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printf("num_commits: %u\n", graph->num_commits);
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printf("chunks:");
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if (graph->chunk_oid_fanout)
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printf(" oid_fanout");
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if (graph->chunk_oid_lookup)
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printf(" oid_lookup");
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if (graph->chunk_commit_data)
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printf(" commit_metadata");
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if (graph->chunk_generation_data)
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printf(" generation_data");
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if (graph->chunk_generation_data_overflow)
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printf(" generation_data_overflow");
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if (graph->chunk_extra_edges)
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printf(" extra_edges");
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if (graph->chunk_bloom_indexes)
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printf(" bloom_indexes");
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if (graph->chunk_bloom_data)
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printf(" bloom_data");
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printf("\n");
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printf("options:");
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if (graph->bloom_filter_settings)
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printf(" bloom(%"PRIu32",%"PRIu32",%"PRIu32")",
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graph->bloom_filter_settings->hash_version,
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graph->bloom_filter_settings->bits_per_entry,
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graph->bloom_filter_settings->num_hashes);
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if (graph->read_generation_data)
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printf(" read_generation_data");
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if (graph->topo_levels)
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printf(" topo_levels");
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printf("\n");
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}
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static void dump_graph_bloom_filters(struct commit_graph *graph)
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{
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uint32_t i;
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for (i = 0; i < graph->num_commits + graph->num_commits_in_base; i++) {
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struct bloom_filter filter = { 0 };
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size_t j;
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if (load_bloom_filter_from_graph(graph, &filter, i) < 0) {
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fprintf(stderr, "missing Bloom filter for graph "
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"position %"PRIu32"\n", i);
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continue;
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}
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for (j = 0; j < filter.len; j++)
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printf("%02x", filter.data[j]);
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if (filter.len)
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printf("\n");
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}
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}
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int cmd__read_graph(int argc, const char **argv)
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{
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struct commit_graph *graph = NULL;
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struct object_directory *odb;
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int ret = 0;
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setup_git_directory();
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odb = the_repository->objects->odb;
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prepare_repo_settings(the_repository);
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graph = read_commit_graph_one(the_repository, odb);
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if (!graph) {
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ret = 1;
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goto done;
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}
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if (argc <= 1)
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dump_graph_info(graph);
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else if (!strcmp(argv[1], "bloom-filters"))
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dump_graph_bloom_filters(graph);
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else {
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fprintf(stderr, "unknown sub-command: '%s'\n", argv[1]);
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ret = 1;
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}
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done:
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UNLEAK(graph);
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return ret;
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}
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