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Commit | Line | Data |
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08fd81c9 | 1 | #include "git-compat-util.h" |
fa796530 | 2 | #include "config.h" |
08fd81c9 DS |
3 | #include "lockfile.h" |
4 | #include "pack.h" | |
5 | #include "packfile.h" | |
6 | #include "commit.h" | |
7 | #include "object.h" | |
59fb8770 | 8 | #include "refs.h" |
08fd81c9 | 9 | #include "revision.h" |
bc626927 | 10 | #include "hash-lookup.h" |
08fd81c9 | 11 | #include "commit-graph.h" |
b10edb2d | 12 | #include "object-store.h" |
96af91d4 | 13 | #include "alloc.h" |
d6538246 DS |
14 | #include "hashmap.h" |
15 | #include "replace-object.h" | |
7b0f2292 | 16 | #include "progress.h" |
f97b9325 | 17 | #include "bloom.h" |
d21ee7d1 | 18 | #include "commit-slab.h" |
120ad2b0 | 19 | #include "shallow.h" |
0087a87b DS |
20 | #include "json-writer.h" |
21 | #include "trace2.h" | |
47410aa8 | 22 | #include "chunk-format.h" |
08fd81c9 | 23 | |
b23ea979 DS |
24 | void git_test_write_commit_graph_or_die(void) |
25 | { | |
26 | int flags = 0; | |
27 | if (!git_env_bool(GIT_TEST_COMMIT_GRAPH, 0)) | |
28 | return; | |
29 | ||
30 | if (git_env_bool(GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS, 0)) | |
31 | flags = COMMIT_GRAPH_WRITE_BLOOM_FILTERS; | |
32 | ||
33 | if (write_commit_graph_reachable(the_repository->objects->odb, | |
34 | flags, NULL)) | |
35 | die("failed to write commit-graph under GIT_TEST_COMMIT_GRAPH"); | |
36 | } | |
37 | ||
08fd81c9 DS |
38 | #define GRAPH_SIGNATURE 0x43475048 /* "CGPH" */ |
39 | #define GRAPH_CHUNKID_OIDFANOUT 0x4f494446 /* "OIDF" */ | |
40 | #define GRAPH_CHUNKID_OIDLOOKUP 0x4f49444c /* "OIDL" */ | |
41 | #define GRAPH_CHUNKID_DATA 0x43444154 /* "CDAT" */ | |
6dbf4b81 DS |
42 | #define GRAPH_CHUNKID_GENERATION_DATA 0x47444132 /* "GDA2" */ |
43 | #define GRAPH_CHUNKID_GENERATION_DATA_OVERFLOW 0x47444f32 /* "GDO2" */ | |
5af7417b | 44 | #define GRAPH_CHUNKID_EXTRAEDGES 0x45444745 /* "EDGE" */ |
76ffbca7 GS |
45 | #define GRAPH_CHUNKID_BLOOMINDEXES 0x42494458 /* "BIDX" */ |
46 | #define GRAPH_CHUNKID_BLOOMDATA 0x42444154 /* "BDAT" */ | |
118bd570 | 47 | #define GRAPH_CHUNKID_BASE 0x42415345 /* "BASE" */ |
08fd81c9 | 48 | |
c1665998 | 49 | #define GRAPH_DATA_WIDTH (the_hash_algo->rawsz + 16) |
08fd81c9 DS |
50 | |
51 | #define GRAPH_VERSION_1 0x1 | |
52 | #define GRAPH_VERSION GRAPH_VERSION_1 | |
53 | ||
5af7417b | 54 | #define GRAPH_EXTRA_EDGES_NEEDED 0x80000000 |
08fd81c9 DS |
55 | #define GRAPH_EDGE_LAST_MASK 0x7fffffff |
56 | #define GRAPH_PARENT_NONE 0x70000000 | |
57 | ||
58 | #define GRAPH_LAST_EDGE 0x80000000 | |
59 | ||
0e3b97cc | 60 | #define GRAPH_HEADER_SIZE 8 |
08fd81c9 | 61 | #define GRAPH_FANOUT_SIZE (4 * 256) |
2692c2f6 | 62 | #define GRAPH_MIN_SIZE (GRAPH_HEADER_SIZE + 4 * CHUNK_TOC_ENTRY_SIZE \ |
c1665998 | 63 | + GRAPH_FANOUT_SIZE + the_hash_algo->rawsz) |
08fd81c9 | 64 | |
e8b63005 AK |
65 | #define CORRECTED_COMMIT_DATE_OFFSET_OVERFLOW (1ULL << 31) |
66 | ||
cb99a34e DS |
67 | /* Remember to update object flag allocation in object.h */ |
68 | #define REACHABLE (1u<<15) | |
69 | ||
72a2bfca AK |
70 | define_commit_slab(topo_level_slab, uint32_t); |
71 | ||
d21ee7d1 JK |
72 | /* Keep track of the order in which commits are added to our list. */ |
73 | define_commit_slab(commit_pos, int); | |
74 | static struct commit_pos commit_pos = COMMIT_SLAB_INIT(1, commit_pos); | |
75 | ||
76 | static void set_commit_pos(struct repository *r, const struct object_id *oid) | |
77 | { | |
78 | static int32_t max_pos; | |
79 | struct commit *commit = lookup_commit(r, oid); | |
80 | ||
81 | if (!commit) | |
82 | return; /* should never happen, but be lenient */ | |
83 | ||
84 | *commit_pos_at(&commit_pos, commit) = max_pos++; | |
85 | } | |
86 | ||
87 | static int commit_pos_cmp(const void *va, const void *vb) | |
08fd81c9 | 88 | { |
d21ee7d1 JK |
89 | const struct commit *a = *(const struct commit **)va; |
90 | const struct commit *b = *(const struct commit **)vb; | |
91 | return commit_pos_at(&commit_pos, a) - | |
92 | commit_pos_at(&commit_pos, b); | |
93 | } | |
94 | ||
4844812b AK |
95 | define_commit_slab(commit_graph_data_slab, struct commit_graph_data); |
96 | static struct commit_graph_data_slab commit_graph_data_slab = | |
97 | COMMIT_SLAB_INIT(1, commit_graph_data_slab); | |
98 | ||
702110aa DS |
99 | static int get_configured_generation_version(struct repository *r) |
100 | { | |
101 | int version = 2; | |
102 | repo_config_get_int(r, "commitgraph.generationversion", &version); | |
103 | return version; | |
104 | } | |
105 | ||
4844812b AK |
106 | uint32_t commit_graph_position(const struct commit *c) |
107 | { | |
108 | struct commit_graph_data *data = | |
109 | commit_graph_data_slab_peek(&commit_graph_data_slab, c); | |
110 | ||
111 | return data ? data->graph_pos : COMMIT_NOT_FROM_GRAPH; | |
112 | } | |
113 | ||
d7f92784 | 114 | timestamp_t commit_graph_generation(const struct commit *c) |
4844812b AK |
115 | { |
116 | struct commit_graph_data *data = | |
117 | commit_graph_data_slab_peek(&commit_graph_data_slab, c); | |
118 | ||
119 | if (!data) | |
120 | return GENERATION_NUMBER_INFINITY; | |
121 | else if (data->graph_pos == COMMIT_NOT_FROM_GRAPH) | |
122 | return GENERATION_NUMBER_INFINITY; | |
123 | ||
124 | return data->generation; | |
125 | } | |
126 | ||
127 | static struct commit_graph_data *commit_graph_data_at(const struct commit *c) | |
128 | { | |
129 | unsigned int i, nth_slab; | |
130 | struct commit_graph_data *data = | |
131 | commit_graph_data_slab_peek(&commit_graph_data_slab, c); | |
132 | ||
133 | if (data) | |
134 | return data; | |
135 | ||
136 | nth_slab = c->index / commit_graph_data_slab.slab_size; | |
137 | data = commit_graph_data_slab_at(&commit_graph_data_slab, c); | |
138 | ||
139 | /* | |
140 | * commit-slab initializes elements with zero, overwrite this with | |
141 | * COMMIT_NOT_FROM_GRAPH for graph_pos. | |
142 | * | |
143 | * We avoid initializing generation with checking if graph position | |
144 | * is not COMMIT_NOT_FROM_GRAPH. | |
145 | */ | |
146 | for (i = 0; i < commit_graph_data_slab.slab_size; i++) { | |
147 | commit_graph_data_slab.slab[nth_slab][i].graph_pos = | |
148 | COMMIT_NOT_FROM_GRAPH; | |
149 | } | |
150 | ||
151 | return data; | |
152 | } | |
153 | ||
e30c5ee7 AK |
154 | /* |
155 | * Should be used only while writing commit-graph as it compares | |
156 | * generation value of commits by directly accessing commit-slab. | |
157 | */ | |
3d112755 GS |
158 | static int commit_gen_cmp(const void *va, const void *vb) |
159 | { | |
160 | const struct commit *a = *(const struct commit **)va; | |
161 | const struct commit *b = *(const struct commit **)vb; | |
162 | ||
d7f92784 AK |
163 | const timestamp_t generation_a = commit_graph_data_at(a)->generation; |
164 | const timestamp_t generation_b = commit_graph_data_at(b)->generation; | |
3d112755 | 165 | /* lower generation commits first */ |
c752ad09 | 166 | if (generation_a < generation_b) |
3d112755 | 167 | return -1; |
c752ad09 | 168 | else if (generation_a > generation_b) |
3d112755 GS |
169 | return 1; |
170 | ||
171 | /* use date as a heuristic when generations are equal */ | |
172 | if (a->date < b->date) | |
173 | return -1; | |
174 | else if (a->date > b->date) | |
175 | return 1; | |
176 | return 0; | |
177 | } | |
178 | ||
d21ee7d1 | 179 | char *get_commit_graph_filename(struct object_directory *obj_dir) |
08fd81c9 | 180 | { |
d21ee7d1 | 181 | return xstrfmt("%s/info/commit-graph", obj_dir->path); |
08fd81c9 DS |
182 | } |
183 | ||
ad2dd5bb | 184 | static char *get_split_graph_filename(struct object_directory *odb, |
5c84b339 DS |
185 | const char *oid_hex) |
186 | { | |
ad2dd5bb TB |
187 | return xstrfmt("%s/info/commit-graphs/graph-%s.graph", odb->path, |
188 | oid_hex); | |
5c84b339 DS |
189 | } |
190 | ||
663b2b1b | 191 | char *get_commit_graph_chain_filename(struct object_directory *odb) |
5c84b339 | 192 | { |
ad2dd5bb | 193 | return xstrfmt("%s/info/commit-graphs/commit-graph-chain", odb->path); |
08fd81c9 DS |
194 | } |
195 | ||
2a2e32bd DS |
196 | static struct commit_graph *alloc_commit_graph(void) |
197 | { | |
198 | struct commit_graph *g = xcalloc(1, sizeof(*g)); | |
2a2e32bd DS |
199 | |
200 | return g; | |
201 | } | |
202 | ||
d6538246 DS |
203 | extern int read_replace_refs; |
204 | ||
205 | static int commit_graph_compatible(struct repository *r) | |
206 | { | |
5cef295f DS |
207 | if (!r->gitdir) |
208 | return 0; | |
209 | ||
d6538246 DS |
210 | if (read_replace_refs) { |
211 | prepare_replace_object(r); | |
cdc986a7 | 212 | if (hashmap_get_size(&r->objects->replace_map->map)) |
d6538246 DS |
213 | return 0; |
214 | } | |
215 | ||
20fd6d57 | 216 | prepare_commit_graft(r); |
ce16364e | 217 | if (r->parsed_objects && |
cdc986a7 | 218 | (r->parsed_objects->grafts_nr || r->parsed_objects->substituted_parent)) |
20fd6d57 | 219 | return 0; |
cdc986a7 | 220 | if (is_repository_shallow(r)) |
20fd6d57 DS |
221 | return 0; |
222 | ||
d6538246 DS |
223 | return 1; |
224 | } | |
225 | ||
61df89c8 ÆAB |
226 | int open_commit_graph(const char *graph_file, int *fd, struct stat *st) |
227 | { | |
228 | *fd = git_open(graph_file); | |
229 | if (*fd < 0) | |
230 | return 0; | |
231 | if (fstat(*fd, st)) { | |
232 | close(*fd); | |
233 | return 0; | |
234 | } | |
235 | return 1; | |
236 | } | |
237 | ||
ab14d067 TB |
238 | struct commit_graph *load_commit_graph_one_fd_st(struct repository *r, |
239 | int fd, struct stat *st, | |
a7df60ca | 240 | struct object_directory *odb) |
2a2e32bd DS |
241 | { |
242 | void *graph_map; | |
2a2e32bd | 243 | size_t graph_size; |
aa658574 | 244 | struct commit_graph *ret; |
2a2e32bd | 245 | |
61df89c8 | 246 | graph_size = xsize_t(st->st_size); |
2a2e32bd DS |
247 | |
248 | if (graph_size < GRAPH_MIN_SIZE) { | |
249 | close(fd); | |
67a530fa | 250 | error(_("commit-graph file is too small")); |
61df89c8 | 251 | return NULL; |
2a2e32bd DS |
252 | } |
253 | graph_map = xmmap(NULL, graph_size, PROT_READ, MAP_PRIVATE, fd, 0); | |
c8828530 | 254 | close(fd); |
a92d8523 TB |
255 | prepare_repo_settings(r); |
256 | ret = parse_commit_graph(&r->settings, graph_map, graph_size); | |
aa658574 | 257 | |
a7df60ca TB |
258 | if (ret) |
259 | ret->odb = odb; | |
c8828530 | 260 | else |
aa658574 | 261 | munmap(graph_map, graph_size); |
aa658574 JS |
262 | |
263 | return ret; | |
264 | } | |
265 | ||
2ac138d5 ÆAB |
266 | static int verify_commit_graph_lite(struct commit_graph *g) |
267 | { | |
268 | /* | |
269 | * Basic validation shared between parse_commit_graph() | |
270 | * which'll be called every time the graph is used, and the | |
271 | * much more expensive verify_commit_graph() used by | |
272 | * "commit-graph verify". | |
273 | * | |
274 | * There should only be very basic checks here to ensure that | |
275 | * we don't e.g. segfault in fill_commit_in_graph(), but | |
276 | * because this is a very hot codepath nothing that e.g. loops | |
277 | * over g->num_commits, or runs a checksum on the commit-graph | |
278 | * itself. | |
279 | */ | |
280 | if (!g->chunk_oid_fanout) { | |
281 | error("commit-graph is missing the OID Fanout chunk"); | |
282 | return 1; | |
283 | } | |
284 | if (!g->chunk_oid_lookup) { | |
285 | error("commit-graph is missing the OID Lookup chunk"); | |
286 | return 1; | |
287 | } | |
288 | if (!g->chunk_commit_data) { | |
289 | error("commit-graph is missing the Commit Data chunk"); | |
290 | return 1; | |
291 | } | |
292 | ||
293 | return 0; | |
294 | } | |
295 | ||
2692c2f6 DS |
296 | static int graph_read_oid_lookup(const unsigned char *chunk_start, |
297 | size_t chunk_size, void *data) | |
298 | { | |
299 | struct commit_graph *g = data; | |
300 | g->chunk_oid_lookup = chunk_start; | |
301 | g->num_commits = chunk_size / g->hash_len; | |
302 | return 0; | |
303 | } | |
304 | ||
305 | static int graph_read_bloom_data(const unsigned char *chunk_start, | |
306 | size_t chunk_size, void *data) | |
307 | { | |
308 | struct commit_graph *g = data; | |
309 | uint32_t hash_version; | |
310 | g->chunk_bloom_data = chunk_start; | |
311 | hash_version = get_be32(chunk_start); | |
312 | ||
313 | if (hash_version != 1) | |
314 | return 0; | |
315 | ||
316 | g->bloom_filter_settings = xmalloc(sizeof(struct bloom_filter_settings)); | |
317 | g->bloom_filter_settings->hash_version = hash_version; | |
318 | g->bloom_filter_settings->num_hashes = get_be32(chunk_start + 4); | |
319 | g->bloom_filter_settings->bits_per_entry = get_be32(chunk_start + 8); | |
320 | g->bloom_filter_settings->max_changed_paths = DEFAULT_BLOOM_MAX_CHANGES; | |
321 | ||
322 | return 0; | |
323 | } | |
324 | ||
a92d8523 | 325 | struct commit_graph *parse_commit_graph(struct repo_settings *s, |
ab14d067 | 326 | void *graph_map, size_t graph_size) |
aa658574 | 327 | { |
2692c2f6 | 328 | const unsigned char *data; |
aa658574 | 329 | struct commit_graph *graph; |
aa658574 JS |
330 | uint32_t graph_signature; |
331 | unsigned char graph_version, hash_version; | |
2692c2f6 | 332 | struct chunkfile *cf = NULL; |
aa658574 JS |
333 | |
334 | if (!graph_map) | |
335 | return NULL; | |
336 | ||
337 | if (graph_size < GRAPH_MIN_SIZE) | |
338 | return NULL; | |
339 | ||
2a2e32bd DS |
340 | data = (const unsigned char *)graph_map; |
341 | ||
342 | graph_signature = get_be32(data); | |
343 | if (graph_signature != GRAPH_SIGNATURE) { | |
93b4405f | 344 | error(_("commit-graph signature %X does not match signature %X"), |
2a2e32bd | 345 | graph_signature, GRAPH_SIGNATURE); |
aa658574 | 346 | return NULL; |
2a2e32bd DS |
347 | } |
348 | ||
349 | graph_version = *(unsigned char*)(data + 4); | |
350 | if (graph_version != GRAPH_VERSION) { | |
93b4405f | 351 | error(_("commit-graph version %X does not match version %X"), |
2a2e32bd | 352 | graph_version, GRAPH_VERSION); |
aa658574 | 353 | return NULL; |
2a2e32bd DS |
354 | } |
355 | ||
356 | hash_version = *(unsigned char*)(data + 5); | |
d9fef9d9 | 357 | if (hash_version != oid_version(the_hash_algo)) { |
93b4405f | 358 | error(_("commit-graph hash version %X does not match version %X"), |
d9fef9d9 | 359 | hash_version, oid_version(the_hash_algo)); |
aa658574 | 360 | return NULL; |
2a2e32bd DS |
361 | } |
362 | ||
363 | graph = alloc_commit_graph(); | |
364 | ||
c1665998 | 365 | graph->hash_len = the_hash_algo->rawsz; |
2a2e32bd | 366 | graph->num_chunks = *(unsigned char*)(data + 6); |
2a2e32bd DS |
367 | graph->data = graph_map; |
368 | graph->data_len = graph_size; | |
369 | ||
2ad4f1a7 | 370 | if (graph_size < GRAPH_HEADER_SIZE + |
2692c2f6 | 371 | (graph->num_chunks + 1) * CHUNK_TOC_ENTRY_SIZE + |
2ad4f1a7 SG |
372 | GRAPH_FANOUT_SIZE + the_hash_algo->rawsz) { |
373 | error(_("commit-graph file is too small to hold %u chunks"), | |
374 | graph->num_chunks); | |
375 | free(graph); | |
376 | return NULL; | |
377 | } | |
378 | ||
2692c2f6 | 379 | cf = init_chunkfile(NULL); |
118bd570 | 380 | |
2692c2f6 DS |
381 | if (read_table_of_contents(cf, graph->data, graph_size, |
382 | GRAPH_HEADER_SIZE, graph->num_chunks)) | |
383 | goto free_and_return; | |
2a2e32bd | 384 | |
2692c2f6 DS |
385 | pair_chunk(cf, GRAPH_CHUNKID_OIDFANOUT, |
386 | (const unsigned char **)&graph->chunk_oid_fanout); | |
387 | read_chunk(cf, GRAPH_CHUNKID_OIDLOOKUP, graph_read_oid_lookup, graph); | |
388 | pair_chunk(cf, GRAPH_CHUNKID_DATA, &graph->chunk_commit_data); | |
389 | pair_chunk(cf, GRAPH_CHUNKID_EXTRAEDGES, &graph->chunk_extra_edges); | |
390 | pair_chunk(cf, GRAPH_CHUNKID_BASE, &graph->chunk_base_graphs); | |
702110aa | 391 | |
a92d8523 | 392 | if (s->commit_graph_generation_version >= 2) { |
702110aa DS |
393 | pair_chunk(cf, GRAPH_CHUNKID_GENERATION_DATA, |
394 | &graph->chunk_generation_data); | |
395 | pair_chunk(cf, GRAPH_CHUNKID_GENERATION_DATA_OVERFLOW, | |
396 | &graph->chunk_generation_data_overflow); | |
3b0199d4 DS |
397 | |
398 | if (graph->chunk_generation_data) | |
399 | graph->read_generation_data = 1; | |
702110aa | 400 | } |
2692c2f6 | 401 | |
a92d8523 | 402 | if (s->commit_graph_read_changed_paths) { |
2692c2f6 DS |
403 | pair_chunk(cf, GRAPH_CHUNKID_BLOOMINDEXES, |
404 | &graph->chunk_bloom_indexes); | |
405 | read_chunk(cf, GRAPH_CHUNKID_BLOOMDATA, | |
406 | graph_read_bloom_data, graph); | |
2a2e32bd DS |
407 | } |
408 | ||
76ffbca7 GS |
409 | if (graph->chunk_bloom_indexes && graph->chunk_bloom_data) { |
410 | init_bloom_filters(); | |
411 | } else { | |
412 | /* We need both the bloom chunks to exist together. Else ignore the data */ | |
413 | graph->chunk_bloom_indexes = NULL; | |
414 | graph->chunk_bloom_data = NULL; | |
fbda77c6 | 415 | FREE_AND_NULL(graph->bloom_filter_settings); |
76ffbca7 GS |
416 | } |
417 | ||
92e2cab9 | 418 | oidread(&graph->oid, graph->data + graph->data_len - graph->hash_len); |
118bd570 | 419 | |
fbda77c6 JT |
420 | if (verify_commit_graph_lite(graph)) |
421 | goto free_and_return; | |
2ac138d5 | 422 | |
2692c2f6 | 423 | free_chunkfile(cf); |
2a2e32bd | 424 | return graph; |
fbda77c6 JT |
425 | |
426 | free_and_return: | |
2692c2f6 | 427 | free_chunkfile(cf); |
fbda77c6 JT |
428 | free(graph->bloom_filter_settings); |
429 | free(graph); | |
430 | return NULL; | |
2a2e32bd DS |
431 | } |
432 | ||
ab14d067 TB |
433 | static struct commit_graph *load_commit_graph_one(struct repository *r, |
434 | const char *graph_file, | |
a7df60ca | 435 | struct object_directory *odb) |
61df89c8 ÆAB |
436 | { |
437 | ||
438 | struct stat st; | |
439 | int fd; | |
6c622f9f | 440 | struct commit_graph *g; |
61df89c8 ÆAB |
441 | int open_ok = open_commit_graph(graph_file, &fd, &st); |
442 | ||
443 | if (!open_ok) | |
444 | return NULL; | |
445 | ||
ab14d067 | 446 | g = load_commit_graph_one_fd_st(r, fd, &st, odb); |
6c622f9f DS |
447 | |
448 | if (g) | |
449 | g->filename = xstrdup(graph_file); | |
450 | ||
451 | return g; | |
61df89c8 ÆAB |
452 | } |
453 | ||
13c24992 TB |
454 | static struct commit_graph *load_commit_graph_v1(struct repository *r, |
455 | struct object_directory *odb) | |
5c84b339 | 456 | { |
ad2dd5bb | 457 | char *graph_name = get_commit_graph_filename(odb); |
ab14d067 | 458 | struct commit_graph *g = load_commit_graph_one(r, graph_name, odb); |
5c84b339 DS |
459 | free(graph_name); |
460 | ||
461 | return g; | |
462 | } | |
463 | ||
464 | static int add_graph_to_chain(struct commit_graph *g, | |
465 | struct commit_graph *chain, | |
466 | struct object_id *oids, | |
467 | int n) | |
468 | { | |
469 | struct commit_graph *cur_g = chain; | |
470 | ||
118bd570 DS |
471 | if (n && !g->chunk_base_graphs) { |
472 | warning(_("commit-graph has no base graphs chunk")); | |
473 | return 0; | |
474 | } | |
475 | ||
5c84b339 DS |
476 | while (n) { |
477 | n--; | |
118bd570 DS |
478 | |
479 | if (!cur_g || | |
480 | !oideq(&oids[n], &cur_g->oid) || | |
481 | !hasheq(oids[n].hash, g->chunk_base_graphs + g->hash_len * n)) { | |
482 | warning(_("commit-graph chain does not match")); | |
483 | return 0; | |
484 | } | |
485 | ||
5c84b339 DS |
486 | cur_g = cur_g->base_graph; |
487 | } | |
488 | ||
489 | g->base_graph = chain; | |
490 | ||
491 | if (chain) | |
492 | g->num_commits_in_base = chain->num_commits + chain->num_commits_in_base; | |
493 | ||
494 | return 1; | |
495 | } | |
496 | ||
13c24992 TB |
497 | static struct commit_graph *load_commit_graph_chain(struct repository *r, |
498 | struct object_directory *odb) | |
5c84b339 DS |
499 | { |
500 | struct commit_graph *graph_chain = NULL; | |
501 | struct strbuf line = STRBUF_INIT; | |
502 | struct stat st; | |
503 | struct object_id *oids; | |
504 | int i = 0, valid = 1, count; | |
663b2b1b | 505 | char *chain_name = get_commit_graph_chain_filename(odb); |
5c84b339 DS |
506 | FILE *fp; |
507 | int stat_res; | |
508 | ||
509 | fp = fopen(chain_name, "r"); | |
510 | stat_res = stat(chain_name, &st); | |
511 | free(chain_name); | |
512 | ||
c0befa0c | 513 | if (!fp) |
5c84b339 | 514 | return NULL; |
c0befa0c KT |
515 | if (stat_res || |
516 | st.st_size <= the_hash_algo->hexsz) { | |
517 | fclose(fp); | |
518 | return NULL; | |
519 | } | |
5c84b339 DS |
520 | |
521 | count = st.st_size / (the_hash_algo->hexsz + 1); | |
ca56dadb | 522 | CALLOC_ARRAY(oids, count); |
5c84b339 | 523 | |
c523035c DS |
524 | prepare_alt_odb(r); |
525 | ||
526 | for (i = 0; i < count; i++) { | |
527 | struct object_directory *odb; | |
5c84b339 DS |
528 | |
529 | if (strbuf_getline_lf(&line, fp) == EOF) | |
530 | break; | |
531 | ||
532 | if (get_oid_hex(line.buf, &oids[i])) { | |
533 | warning(_("invalid commit-graph chain: line '%s' not a hash"), | |
534 | line.buf); | |
535 | valid = 0; | |
536 | break; | |
537 | } | |
538 | ||
c523035c DS |
539 | valid = 0; |
540 | for (odb = r->objects->odb; odb; odb = odb->next) { | |
ad2dd5bb | 541 | char *graph_name = get_split_graph_filename(odb, line.buf); |
ab14d067 | 542 | struct commit_graph *g = load_commit_graph_one(r, graph_name, odb); |
5c84b339 | 543 | |
c523035c DS |
544 | free(graph_name); |
545 | ||
546 | if (g) { | |
c523035c DS |
547 | if (add_graph_to_chain(g, graph_chain, oids, i)) { |
548 | graph_chain = g; | |
549 | valid = 1; | |
550 | } | |
551 | ||
552 | break; | |
553 | } | |
554 | } | |
555 | ||
556 | if (!valid) { | |
557 | warning(_("unable to find all commit-graph files")); | |
558 | break; | |
559 | } | |
5c84b339 DS |
560 | } |
561 | ||
562 | free(oids); | |
563 | fclose(fp); | |
0aa6bce7 | 564 | strbuf_release(&line); |
5c84b339 DS |
565 | |
566 | return graph_chain; | |
567 | } | |
568 | ||
448a39e6 DS |
569 | /* |
570 | * returns 1 if and only if all graphs in the chain have | |
571 | * corrected commit dates stored in the generation_data chunk. | |
572 | */ | |
573 | static int validate_mixed_generation_chain(struct commit_graph *g) | |
1fdc383c | 574 | { |
448a39e6 DS |
575 | int read_generation_data = 1; |
576 | struct commit_graph *p = g; | |
1fdc383c | 577 | |
448a39e6 DS |
578 | while (read_generation_data && p) { |
579 | read_generation_data = p->read_generation_data; | |
580 | p = p->base_graph; | |
581 | } | |
1fdc383c | 582 | |
448a39e6 DS |
583 | if (read_generation_data) |
584 | return 1; | |
1fdc383c AK |
585 | |
586 | while (g) { | |
448a39e6 | 587 | g->read_generation_data = 0; |
1fdc383c AK |
588 | g = g->base_graph; |
589 | } | |
448a39e6 DS |
590 | |
591 | return 0; | |
1fdc383c AK |
592 | } |
593 | ||
13c24992 TB |
594 | struct commit_graph *read_commit_graph_one(struct repository *r, |
595 | struct object_directory *odb) | |
5c84b339 | 596 | { |
13c24992 | 597 | struct commit_graph *g = load_commit_graph_v1(r, odb); |
5c84b339 DS |
598 | |
599 | if (!g) | |
13c24992 | 600 | g = load_commit_graph_chain(r, odb); |
5c84b339 | 601 | |
1fdc383c AK |
602 | validate_mixed_generation_chain(g); |
603 | ||
5c84b339 | 604 | return g; |
61df89c8 ÆAB |
605 | } |
606 | ||
13c24992 TB |
607 | static void prepare_commit_graph_one(struct repository *r, |
608 | struct object_directory *odb) | |
177722b3 | 609 | { |
177722b3 | 610 | |
dade47c0 | 611 | if (r->objects->commit_graph) |
177722b3 DS |
612 | return; |
613 | ||
13c24992 | 614 | r->objects->commit_graph = read_commit_graph_one(r, odb); |
177722b3 DS |
615 | } |
616 | ||
5faf357b JT |
617 | /* |
618 | * Return 1 if commit_graph is non-NULL, and 0 otherwise. | |
619 | * | |
15beaaa3 | 620 | * On the first invocation, this function attempts to load the commit |
5faf357b JT |
621 | * graph if the_repository is configured to have one. |
622 | */ | |
dade47c0 | 623 | static int prepare_commit_graph(struct repository *r) |
177722b3 | 624 | { |
263db403 | 625 | struct object_directory *odb; |
dade47c0 | 626 | |
6abada18 | 627 | /* |
0803f9c7 LD |
628 | * Early return if there is no git dir or if the commit graph is |
629 | * disabled. | |
630 | * | |
6abada18 JK |
631 | * This must come before the "already attempted?" check below, because |
632 | * we want to disable even an already-loaded graph file. | |
633 | */ | |
0803f9c7 | 634 | if (!r->gitdir || r->commit_graph_disabled) |
6abada18 | 635 | return 0; |
43d35618 | 636 | |
dade47c0 JT |
637 | if (r->objects->commit_graph_attempted) |
638 | return !!r->objects->commit_graph; | |
639 | r->objects->commit_graph_attempted = 1; | |
640 | ||
7211b9e7 DS |
641 | prepare_repo_settings(r); |
642 | ||
859fdc0c | 643 | if (!git_env_bool(GIT_TEST_COMMIT_GRAPH, 0) && |
7211b9e7 | 644 | r->settings.core_commit_graph != 1) |
dade47c0 JT |
645 | /* |
646 | * This repository is not configured to use commit graphs, so | |
647 | * do not load one. (But report commit_graph_attempted anyway | |
648 | * so that commit graph loading is not attempted again for this | |
649 | * repository.) | |
650 | */ | |
5faf357b JT |
651 | return 0; |
652 | ||
d6538246 DS |
653 | if (!commit_graph_compatible(r)) |
654 | return 0; | |
655 | ||
dade47c0 | 656 | prepare_alt_odb(r); |
f0eaf638 | 657 | for (odb = r->objects->odb; |
263db403 JK |
658 | !r->objects->commit_graph && odb; |
659 | odb = odb->next) | |
13c24992 | 660 | prepare_commit_graph_one(r, odb); |
dade47c0 | 661 | return !!r->objects->commit_graph; |
177722b3 DS |
662 | } |
663 | ||
6cc01743 DS |
664 | int generation_numbers_enabled(struct repository *r) |
665 | { | |
666 | uint32_t first_generation; | |
667 | struct commit_graph *g; | |
668 | if (!prepare_commit_graph(r)) | |
669 | return 0; | |
670 | ||
671 | g = r->objects->commit_graph; | |
672 | ||
673 | if (!g->num_commits) | |
674 | return 0; | |
675 | ||
676 | first_generation = get_be32(g->chunk_commit_data + | |
677 | g->hash_len + 8) >> 2; | |
678 | ||
679 | return !!first_generation; | |
680 | } | |
681 | ||
8d00d7c3 AK |
682 | int corrected_commit_dates_enabled(struct repository *r) |
683 | { | |
684 | struct commit_graph *g; | |
685 | if (!prepare_commit_graph(r)) | |
686 | return 0; | |
687 | ||
688 | g = r->objects->commit_graph; | |
689 | ||
690 | if (!g->num_commits) | |
691 | return 0; | |
692 | ||
693 | return g->read_generation_data; | |
694 | } | |
695 | ||
4f364405 TB |
696 | struct bloom_filter_settings *get_bloom_filter_settings(struct repository *r) |
697 | { | |
698 | struct commit_graph *g = r->objects->commit_graph; | |
699 | while (g) { | |
700 | if (g->bloom_filter_settings) | |
701 | return g->bloom_filter_settings; | |
702 | g = g->base_graph; | |
703 | } | |
704 | return NULL; | |
705 | } | |
706 | ||
d4f4d60f DS |
707 | static void close_commit_graph_one(struct commit_graph *g) |
708 | { | |
709 | if (!g) | |
710 | return; | |
711 | ||
957ba814 | 712 | clear_commit_graph_data_slab(&commit_graph_data_slab); |
d4f4d60f DS |
713 | close_commit_graph_one(g->base_graph); |
714 | free_commit_graph(g); | |
715 | } | |
716 | ||
c3a3a964 | 717 | void close_commit_graph(struct raw_object_store *o) |
177722b3 | 718 | { |
d4f4d60f | 719 | close_commit_graph_one(o->commit_graph); |
c3a3a964 | 720 | o->commit_graph = NULL; |
177722b3 DS |
721 | } |
722 | ||
809ea28f | 723 | static int bsearch_graph(struct commit_graph *g, const struct object_id *oid, uint32_t *pos) |
177722b3 DS |
724 | { |
725 | return bsearch_hash(oid->hash, g->chunk_oid_fanout, | |
726 | g->chunk_oid_lookup, g->hash_len, pos); | |
727 | } | |
728 | ||
d4f4d60f DS |
729 | static void load_oid_from_graph(struct commit_graph *g, |
730 | uint32_t pos, | |
731 | struct object_id *oid) | |
732 | { | |
733 | uint32_t lex_index; | |
734 | ||
735 | while (g && pos < g->num_commits_in_base) | |
736 | g = g->base_graph; | |
737 | ||
738 | if (!g) | |
739 | BUG("NULL commit-graph"); | |
740 | ||
741 | if (pos >= g->num_commits + g->num_commits_in_base) | |
742 | die(_("invalid commit position. commit-graph is likely corrupt")); | |
743 | ||
744 | lex_index = pos - g->num_commits_in_base; | |
745 | ||
92e2cab9 | 746 | oidread(oid, g->chunk_oid_lookup + g->hash_len * lex_index); |
d4f4d60f DS |
747 | } |
748 | ||
4f542b7a SB |
749 | static struct commit_list **insert_parent_or_die(struct repository *r, |
750 | struct commit_graph *g, | |
d4f4d60f | 751 | uint32_t pos, |
177722b3 DS |
752 | struct commit_list **pptr) |
753 | { | |
754 | struct commit *c; | |
755 | struct object_id oid; | |
96af91d4 | 756 | |
d4f4d60f DS |
757 | if (pos >= g->num_commits + g->num_commits_in_base) |
758 | die("invalid parent position %"PRIu32, pos); | |
53614b13 | 759 | |
d4f4d60f | 760 | load_oid_from_graph(g, pos, &oid); |
4f542b7a | 761 | c = lookup_commit(r, &oid); |
177722b3 | 762 | if (!c) |
4f5b532d | 763 | die(_("could not find commit %s"), oid_to_hex(&oid)); |
c49c82aa | 764 | commit_graph_data_at(c)->graph_pos = pos; |
177722b3 DS |
765 | return &commit_list_insert(c, pptr)->next; |
766 | } | |
767 | ||
e2838d85 DS |
768 | static void fill_commit_graph_info(struct commit *item, struct commit_graph *g, uint32_t pos) |
769 | { | |
d4f4d60f | 770 | const unsigned char *commit_data; |
c752ad09 | 771 | struct commit_graph_data *graph_data; |
e8b63005 AK |
772 | uint32_t lex_index, offset_pos; |
773 | uint64_t date_high, date_low, offset; | |
d4f4d60f DS |
774 | |
775 | while (pos < g->num_commits_in_base) | |
776 | g = g->base_graph; | |
777 | ||
f90fca63 AK |
778 | if (pos >= g->num_commits + g->num_commits_in_base) |
779 | die(_("invalid commit position. commit-graph is likely corrupt")); | |
780 | ||
d4f4d60f DS |
781 | lex_index = pos - g->num_commits_in_base; |
782 | commit_data = g->chunk_commit_data + GRAPH_DATA_WIDTH * lex_index; | |
c752ad09 AK |
783 | |
784 | graph_data = commit_graph_data_at(item); | |
785 | graph_data->graph_pos = pos; | |
f90fca63 AK |
786 | |
787 | date_high = get_be32(commit_data + g->hash_len + 8) & 0x3; | |
788 | date_low = get_be32(commit_data + g->hash_len + 12); | |
789 | item->date = (timestamp_t)((date_high << 32) | date_low); | |
790 | ||
1fdc383c | 791 | if (g->read_generation_data) { |
e8b63005 AK |
792 | offset = (timestamp_t)get_be32(g->chunk_generation_data + sizeof(uint32_t) * lex_index); |
793 | ||
794 | if (offset & CORRECTED_COMMIT_DATE_OFFSET_OVERFLOW) { | |
795 | if (!g->chunk_generation_data_overflow) | |
796 | die(_("commit-graph requires overflow generation data but has none")); | |
797 | ||
798 | offset_pos = offset ^ CORRECTED_COMMIT_DATE_OFFSET_OVERFLOW; | |
c8d67b9a | 799 | graph_data->generation = item->date + get_be64(g->chunk_generation_data_overflow + 8 * offset_pos); |
e8b63005 AK |
800 | } else |
801 | graph_data->generation = item->date + offset; | |
802 | } else | |
803 | graph_data->generation = get_be32(commit_data + g->hash_len + 8) >> 2; | |
72a2bfca AK |
804 | |
805 | if (g->topo_levels) | |
806 | *topo_level_slab_at(g->topo_levels, item) = get_be32(commit_data + g->hash_len + 8) >> 2; | |
e2838d85 DS |
807 | } |
808 | ||
a133c40b NTND |
809 | static inline void set_commit_tree(struct commit *c, struct tree *t) |
810 | { | |
811 | c->maybe_tree = t; | |
812 | } | |
813 | ||
4f542b7a SB |
814 | static int fill_commit_in_graph(struct repository *r, |
815 | struct commit *item, | |
816 | struct commit_graph *g, uint32_t pos) | |
177722b3 | 817 | { |
177722b3 DS |
818 | uint32_t edge_value; |
819 | uint32_t *parent_data_ptr; | |
177722b3 | 820 | struct commit_list **pptr; |
d4f4d60f DS |
821 | const unsigned char *commit_data; |
822 | uint32_t lex_index; | |
177722b3 | 823 | |
d4f4d60f DS |
824 | while (pos < g->num_commits_in_base) |
825 | g = g->base_graph; | |
826 | ||
f90fca63 | 827 | fill_commit_graph_info(item, g, pos); |
d4f4d60f | 828 | |
d4f4d60f | 829 | lex_index = pos - g->num_commits_in_base; |
d4f4d60f DS |
830 | commit_data = g->chunk_commit_data + (g->hash_len + 16) * lex_index; |
831 | ||
832 | item->object.parsed = 1; | |
177722b3 | 833 | |
a133c40b | 834 | set_commit_tree(item, NULL); |
177722b3 | 835 | |
177722b3 DS |
836 | pptr = &item->parents; |
837 | ||
838 | edge_value = get_be32(commit_data + g->hash_len); | |
839 | if (edge_value == GRAPH_PARENT_NONE) | |
840 | return 1; | |
4f542b7a | 841 | pptr = insert_parent_or_die(r, g, edge_value, pptr); |
177722b3 DS |
842 | |
843 | edge_value = get_be32(commit_data + g->hash_len + 4); | |
844 | if (edge_value == GRAPH_PARENT_NONE) | |
845 | return 1; | |
5af7417b | 846 | if (!(edge_value & GRAPH_EXTRA_EDGES_NEEDED)) { |
4f542b7a | 847 | pptr = insert_parent_or_die(r, g, edge_value, pptr); |
177722b3 DS |
848 | return 1; |
849 | } | |
850 | ||
5af7417b | 851 | parent_data_ptr = (uint32_t*)(g->chunk_extra_edges + |
177722b3 DS |
852 | 4 * (uint64_t)(edge_value & GRAPH_EDGE_LAST_MASK)); |
853 | do { | |
854 | edge_value = get_be32(parent_data_ptr); | |
4f542b7a | 855 | pptr = insert_parent_or_die(r, g, |
177722b3 DS |
856 | edge_value & GRAPH_EDGE_LAST_MASK, |
857 | pptr); | |
858 | parent_data_ptr++; | |
859 | } while (!(edge_value & GRAPH_LAST_EDGE)); | |
860 | ||
861 | return 1; | |
862 | } | |
863 | ||
809ea28f PS |
864 | static int search_commit_pos_in_graph(const struct object_id *id, struct commit_graph *g, uint32_t *pos) |
865 | { | |
866 | struct commit_graph *cur_g = g; | |
867 | uint32_t lex_index; | |
868 | ||
869 | while (cur_g && !bsearch_graph(cur_g, id, &lex_index)) | |
870 | cur_g = cur_g->base_graph; | |
871 | ||
872 | if (cur_g) { | |
873 | *pos = lex_index + cur_g->num_commits_in_base; | |
874 | return 1; | |
875 | } | |
876 | ||
877 | return 0; | |
878 | } | |
879 | ||
880 | static int find_commit_pos_in_graph(struct commit *item, struct commit_graph *g, uint32_t *pos) | |
e2838d85 | 881 | { |
c752ad09 AK |
882 | uint32_t graph_pos = commit_graph_position(item); |
883 | if (graph_pos != COMMIT_NOT_FROM_GRAPH) { | |
884 | *pos = graph_pos; | |
e2838d85 DS |
885 | return 1; |
886 | } else { | |
809ea28f | 887 | return search_commit_pos_in_graph(&item->object.oid, g, pos); |
e2838d85 DS |
888 | } |
889 | } | |
890 | ||
7805360b TB |
891 | int repo_find_commit_pos_in_graph(struct repository *r, struct commit *c, |
892 | uint32_t *pos) | |
893 | { | |
894 | if (!prepare_commit_graph(r)) | |
895 | return 0; | |
896 | return find_commit_pos_in_graph(c, r->objects->commit_graph, pos); | |
897 | } | |
898 | ||
f559d6d4 PS |
899 | struct commit *lookup_commit_in_graph(struct repository *repo, const struct object_id *id) |
900 | { | |
901 | struct commit *commit; | |
902 | uint32_t pos; | |
903 | ||
d6045294 | 904 | if (!prepare_commit_graph(repo)) |
f559d6d4 PS |
905 | return NULL; |
906 | if (!search_commit_pos_in_graph(id, repo->objects->commit_graph, &pos)) | |
907 | return NULL; | |
3a1ea94a | 908 | if (!has_object(repo, id, 0)) |
f559d6d4 PS |
909 | return NULL; |
910 | ||
911 | commit = lookup_commit(repo, id); | |
912 | if (!commit) | |
913 | return NULL; | |
914 | if (commit->object.parsed) | |
915 | return commit; | |
916 | ||
917 | if (!fill_commit_in_graph(repo, commit, repo->objects->commit_graph, pos)) | |
918 | return NULL; | |
919 | ||
920 | return commit; | |
921 | } | |
922 | ||
4f542b7a SB |
923 | static int parse_commit_in_graph_one(struct repository *r, |
924 | struct commit_graph *g, | |
925 | struct commit *item) | |
177722b3 | 926 | { |
e2838d85 DS |
927 | uint32_t pos; |
928 | ||
177722b3 DS |
929 | if (item->object.parsed) |
930 | return 1; | |
ee797053 | 931 | |
809ea28f | 932 | if (find_commit_pos_in_graph(item, g, &pos)) |
4f542b7a | 933 | return fill_commit_in_graph(r, item, g, pos); |
ee797053 DS |
934 | |
935 | return 0; | |
936 | } | |
937 | ||
dade47c0 | 938 | int parse_commit_in_graph(struct repository *r, struct commit *item) |
ee797053 | 939 | { |
7b671f8c DS |
940 | static int checked_env = 0; |
941 | ||
942 | if (!checked_env && | |
943 | git_env_bool(GIT_TEST_COMMIT_GRAPH_DIE_ON_PARSE, 0)) | |
944 | die("dying as requested by the '%s' variable on commit-graph parse!", | |
945 | GIT_TEST_COMMIT_GRAPH_DIE_ON_PARSE); | |
946 | checked_env = 1; | |
947 | ||
dade47c0 | 948 | if (!prepare_commit_graph(r)) |
ee797053 | 949 | return 0; |
4f542b7a | 950 | return parse_commit_in_graph_one(r, r->objects->commit_graph, item); |
177722b3 DS |
951 | } |
952 | ||
dade47c0 | 953 | void load_commit_graph_info(struct repository *r, struct commit *item) |
e2838d85 DS |
954 | { |
955 | uint32_t pos; | |
7805360b | 956 | if (repo_find_commit_pos_in_graph(r, item, &pos)) |
dade47c0 | 957 | fill_commit_graph_info(item, r->objects->commit_graph, pos); |
e2838d85 DS |
958 | } |
959 | ||
4f542b7a SB |
960 | static struct tree *load_tree_for_commit(struct repository *r, |
961 | struct commit_graph *g, | |
962 | struct commit *c) | |
7b8a21db DS |
963 | { |
964 | struct object_id oid; | |
d4f4d60f | 965 | const unsigned char *commit_data; |
c752ad09 | 966 | uint32_t graph_pos = commit_graph_position(c); |
d4f4d60f | 967 | |
c752ad09 | 968 | while (graph_pos < g->num_commits_in_base) |
d4f4d60f DS |
969 | g = g->base_graph; |
970 | ||
971 | commit_data = g->chunk_commit_data + | |
c752ad09 | 972 | GRAPH_DATA_WIDTH * (graph_pos - g->num_commits_in_base); |
7b8a21db | 973 | |
92e2cab9 | 974 | oidread(&oid, commit_data); |
a133c40b | 975 | set_commit_tree(c, lookup_tree(r, &oid)); |
7b8a21db DS |
976 | |
977 | return c->maybe_tree; | |
978 | } | |
979 | ||
4f542b7a SB |
980 | static struct tree *get_commit_tree_in_graph_one(struct repository *r, |
981 | struct commit_graph *g, | |
0cbef8f8 | 982 | const struct commit *c) |
7b8a21db DS |
983 | { |
984 | if (c->maybe_tree) | |
985 | return c->maybe_tree; | |
c49c82aa | 986 | if (commit_graph_position(c) == COMMIT_NOT_FROM_GRAPH) |
0cbef8f8 DS |
987 | BUG("get_commit_tree_in_graph_one called from non-commit-graph commit"); |
988 | ||
4f542b7a | 989 | return load_tree_for_commit(r, g, (struct commit *)c); |
0cbef8f8 | 990 | } |
7b8a21db | 991 | |
dade47c0 | 992 | struct tree *get_commit_tree_in_graph(struct repository *r, const struct commit *c) |
0cbef8f8 | 993 | { |
4f542b7a | 994 | return get_commit_tree_in_graph_one(r, r->objects->commit_graph, c); |
7b8a21db DS |
995 | } |
996 | ||
c9905bea DS |
997 | struct packed_commit_list { |
998 | struct commit **list; | |
3361390c JK |
999 | size_t nr; |
1000 | size_t alloc; | |
c9905bea DS |
1001 | }; |
1002 | ||
c9905bea DS |
1003 | struct write_commit_graph_context { |
1004 | struct repository *r; | |
0bd52e27 | 1005 | struct object_directory *odb; |
c9905bea | 1006 | char *graph_name; |
a5f1c448 | 1007 | struct oid_array oids; |
c9905bea DS |
1008 | struct packed_commit_list commits; |
1009 | int num_extra_edges; | |
e8b63005 | 1010 | int num_generation_data_overflows; |
c9905bea DS |
1011 | unsigned long approx_nr_objects; |
1012 | struct progress *progress; | |
1013 | int progress_done; | |
1014 | uint64_t progress_cnt; | |
6c622f9f DS |
1015 | |
1016 | char *base_graph_name; | |
1017 | int num_commit_graphs_before; | |
1018 | int num_commit_graphs_after; | |
1019 | char **commit_graph_filenames_before; | |
1020 | char **commit_graph_filenames_after; | |
1021 | char **commit_graph_hash_after; | |
1022 | uint32_t new_num_commits_in_base; | |
1023 | struct commit_graph *new_base_graph; | |
1024 | ||
c9905bea | 1025 | unsigned append:1, |
6c622f9f | 1026 | report_progress:1, |
7c5c9b9c | 1027 | split:1, |
3d112755 | 1028 | changed_paths:1, |
e8b63005 | 1029 | order_by_pack:1, |
fde55b09 DS |
1030 | write_generation_data:1, |
1031 | trust_generation_numbers:1; | |
c2bc6e6a | 1032 | |
72a2bfca | 1033 | struct topo_level_slab *topo_levels; |
98bb7961 | 1034 | const struct commit_graph_opts *opts; |
f97b9325 | 1035 | size_t total_bloom_filter_data_size; |
98037f2b | 1036 | const struct bloom_filter_settings *bloom_settings; |
312cff52 TB |
1037 | |
1038 | int count_bloom_filter_computed; | |
1039 | int count_bloom_filter_not_computed; | |
59f0d507 | 1040 | int count_bloom_filter_trunc_empty; |
312cff52 | 1041 | int count_bloom_filter_trunc_large; |
c9905bea DS |
1042 | }; |
1043 | ||
9bab081d | 1044 | static int write_graph_chunk_fanout(struct hashfile *f, |
eb907191 | 1045 | void *data) |
08fd81c9 | 1046 | { |
eb907191 | 1047 | struct write_commit_graph_context *ctx = data; |
08fd81c9 | 1048 | int i, count = 0; |
c9905bea | 1049 | struct commit **list = ctx->commits.list; |
08fd81c9 DS |
1050 | |
1051 | /* | |
1052 | * Write the first-level table (the list is sorted, | |
1053 | * but we use a 256-entry lookup to be able to avoid | |
1054 | * having to do eight extra binary search iterations). | |
1055 | */ | |
1056 | for (i = 0; i < 256; i++) { | |
c9905bea | 1057 | while (count < ctx->commits.nr) { |
08fd81c9 DS |
1058 | if ((*list)->object.oid.hash[0] != i) |
1059 | break; | |
c9905bea | 1060 | display_progress(ctx->progress, ++ctx->progress_cnt); |
08fd81c9 DS |
1061 | count++; |
1062 | list++; | |
1063 | } | |
1064 | ||
1065 | hashwrite_be32(f, count); | |
1066 | } | |
9bab081d SG |
1067 | |
1068 | return 0; | |
08fd81c9 DS |
1069 | } |
1070 | ||
9bab081d | 1071 | static int write_graph_chunk_oids(struct hashfile *f, |
eb907191 | 1072 | void *data) |
08fd81c9 | 1073 | { |
eb907191 | 1074 | struct write_commit_graph_context *ctx = data; |
c9905bea | 1075 | struct commit **list = ctx->commits.list; |
08fd81c9 | 1076 | int count; |
c9905bea DS |
1077 | for (count = 0; count < ctx->commits.nr; count++, list++) { |
1078 | display_progress(ctx->progress, ++ctx->progress_cnt); | |
9bab081d | 1079 | hashwrite(f, (*list)->object.oid.hash, the_hash_algo->rawsz); |
53035c4f | 1080 | } |
9bab081d SG |
1081 | |
1082 | return 0; | |
08fd81c9 DS |
1083 | } |
1084 | ||
8380dcd7 | 1085 | static const struct object_id *commit_to_oid(size_t index, const void *table) |
08fd81c9 | 1086 | { |
8380dcd7 | 1087 | const struct commit * const *commits = table; |
45ee13b9 | 1088 | return &commits[index]->object.oid; |
08fd81c9 DS |
1089 | } |
1090 | ||
9bab081d | 1091 | static int write_graph_chunk_data(struct hashfile *f, |
eb907191 | 1092 | void *data) |
08fd81c9 | 1093 | { |
eb907191 | 1094 | struct write_commit_graph_context *ctx = data; |
c9905bea DS |
1095 | struct commit **list = ctx->commits.list; |
1096 | struct commit **last = ctx->commits.list + ctx->commits.nr; | |
08fd81c9 DS |
1097 | uint32_t num_extra_edges = 0; |
1098 | ||
1099 | while (list < last) { | |
1100 | struct commit_list *parent; | |
806278de | 1101 | struct object_id *tree; |
08fd81c9 DS |
1102 | int edge_value; |
1103 | uint32_t packedDate[2]; | |
c9905bea | 1104 | display_progress(ctx->progress, ++ctx->progress_cnt); |
08fd81c9 | 1105 | |
c4cc0831 | 1106 | if (repo_parse_commit_no_graph(ctx->r, *list)) |
16749b8d TB |
1107 | die(_("unable to parse commit %s"), |
1108 | oid_to_hex(&(*list)->object.oid)); | |
806278de | 1109 | tree = get_commit_tree_oid(*list); |
9bab081d | 1110 | hashwrite(f, tree->hash, the_hash_algo->rawsz); |
08fd81c9 DS |
1111 | |
1112 | parent = (*list)->parents; | |
1113 | ||
1114 | if (!parent) | |
1115 | edge_value = GRAPH_PARENT_NONE; | |
1116 | else { | |
45ee13b9 JK |
1117 | edge_value = oid_pos(&parent->item->object.oid, |
1118 | ctx->commits.list, | |
1119 | ctx->commits.nr, | |
1120 | commit_to_oid); | |
08fd81c9 | 1121 | |
6c622f9f DS |
1122 | if (edge_value >= 0) |
1123 | edge_value += ctx->new_num_commits_in_base; | |
8a6ac287 | 1124 | else if (ctx->new_base_graph) { |
6c622f9f | 1125 | uint32_t pos; |
809ea28f PS |
1126 | if (find_commit_pos_in_graph(parent->item, |
1127 | ctx->new_base_graph, | |
1128 | &pos)) | |
6c622f9f DS |
1129 | edge_value = pos; |
1130 | } | |
1131 | ||
08fd81c9 | 1132 | if (edge_value < 0) |
cce99cd8 DS |
1133 | BUG("missing parent %s for commit %s", |
1134 | oid_to_hex(&parent->item->object.oid), | |
1135 | oid_to_hex(&(*list)->object.oid)); | |
08fd81c9 DS |
1136 | } |
1137 | ||
1138 | hashwrite_be32(f, edge_value); | |
1139 | ||
1140 | if (parent) | |
1141 | parent = parent->next; | |
1142 | ||
1143 | if (!parent) | |
1144 | edge_value = GRAPH_PARENT_NONE; | |
1145 | else if (parent->next) | |
5af7417b | 1146 | edge_value = GRAPH_EXTRA_EDGES_NEEDED | num_extra_edges; |
08fd81c9 | 1147 | else { |
45ee13b9 JK |
1148 | edge_value = oid_pos(&parent->item->object.oid, |
1149 | ctx->commits.list, | |
1150 | ctx->commits.nr, | |
1151 | commit_to_oid); | |
6c622f9f DS |
1152 | |
1153 | if (edge_value >= 0) | |
1154 | edge_value += ctx->new_num_commits_in_base; | |
8a6ac287 | 1155 | else if (ctx->new_base_graph) { |
6c622f9f | 1156 | uint32_t pos; |
809ea28f PS |
1157 | if (find_commit_pos_in_graph(parent->item, |
1158 | ctx->new_base_graph, | |
1159 | &pos)) | |
6c622f9f DS |
1160 | edge_value = pos; |
1161 | } | |
1162 | ||
08fd81c9 | 1163 | if (edge_value < 0) |
cce99cd8 DS |
1164 | BUG("missing parent %s for commit %s", |
1165 | oid_to_hex(&parent->item->object.oid), | |
1166 | oid_to_hex(&(*list)->object.oid)); | |
08fd81c9 DS |
1167 | } |
1168 | ||
1169 | hashwrite_be32(f, edge_value); | |
1170 | ||
5af7417b | 1171 | if (edge_value & GRAPH_EXTRA_EDGES_NEEDED) { |
08fd81c9 DS |
1172 | do { |
1173 | num_extra_edges++; | |
1174 | parent = parent->next; | |
1175 | } while (parent); | |
1176 | } | |
1177 | ||
1178 | if (sizeof((*list)->date) > 4) | |
1179 | packedDate[0] = htonl(((*list)->date >> 32) & 0x3); | |
1180 | else | |
1181 | packedDate[0] = 0; | |
1182 | ||
72a2bfca | 1183 | packedDate[0] |= htonl(*topo_level_slab_at(ctx->topo_levels, *list) << 2); |
3258c663 | 1184 | |
08fd81c9 DS |
1185 | packedDate[1] = htonl((*list)->date); |
1186 | hashwrite(f, packedDate, 8); | |
1187 | ||
1188 | list++; | |
1189 | } | |
9bab081d SG |
1190 | |
1191 | return 0; | |
08fd81c9 DS |
1192 | } |
1193 | ||
e8b63005 | 1194 | static int write_graph_chunk_generation_data(struct hashfile *f, |
eb907191 | 1195 | void *data) |
e8b63005 | 1196 | { |
eb907191 | 1197 | struct write_commit_graph_context *ctx = data; |
e8b63005 AK |
1198 | int i, num_generation_data_overflows = 0; |
1199 | ||
1200 | for (i = 0; i < ctx->commits.nr; i++) { | |
1201 | struct commit *c = ctx->commits.list[i]; | |
90cb1c47 DS |
1202 | timestamp_t offset; |
1203 | repo_parse_commit(ctx->r, c); | |
1204 | offset = commit_graph_data_at(c)->generation - c->date; | |
e8b63005 AK |
1205 | display_progress(ctx->progress, ++ctx->progress_cnt); |
1206 | ||
1207 | if (offset > GENERATION_NUMBER_V2_OFFSET_MAX) { | |
1208 | offset = CORRECTED_COMMIT_DATE_OFFSET_OVERFLOW | num_generation_data_overflows; | |
1209 | num_generation_data_overflows++; | |
1210 | } | |
1211 | ||
1212 | hashwrite_be32(f, offset); | |
1213 | } | |
1214 | ||
1215 | return 0; | |
1216 | } | |
1217 | ||
1218 | static int write_graph_chunk_generation_data_overflow(struct hashfile *f, | |
eb907191 | 1219 | void *data) |
e8b63005 | 1220 | { |
eb907191 | 1221 | struct write_commit_graph_context *ctx = data; |
e8b63005 AK |
1222 | int i; |
1223 | for (i = 0; i < ctx->commits.nr; i++) { | |
1224 | struct commit *c = ctx->commits.list[i]; | |
1225 | timestamp_t offset = commit_graph_data_at(c)->generation - c->date; | |
1226 | display_progress(ctx->progress, ++ctx->progress_cnt); | |
1227 | ||
1228 | if (offset > GENERATION_NUMBER_V2_OFFSET_MAX) { | |
1229 | hashwrite_be32(f, offset >> 32); | |
1230 | hashwrite_be32(f, (uint32_t) offset); | |
1231 | } | |
1232 | } | |
1233 | ||
1234 | return 0; | |
1235 | } | |
1236 | ||
9bab081d | 1237 | static int write_graph_chunk_extra_edges(struct hashfile *f, |
eb907191 | 1238 | void *data) |
08fd81c9 | 1239 | { |
eb907191 | 1240 | struct write_commit_graph_context *ctx = data; |
c9905bea DS |
1241 | struct commit **list = ctx->commits.list; |
1242 | struct commit **last = ctx->commits.list + ctx->commits.nr; | |
08fd81c9 DS |
1243 | struct commit_list *parent; |
1244 | ||
1245 | while (list < last) { | |
1246 | int num_parents = 0; | |
53035c4f | 1247 | |
c9905bea | 1248 | display_progress(ctx->progress, ++ctx->progress_cnt); |
53035c4f | 1249 | |
08fd81c9 DS |
1250 | for (parent = (*list)->parents; num_parents < 3 && parent; |
1251 | parent = parent->next) | |
1252 | num_parents++; | |
1253 | ||
1254 | if (num_parents <= 2) { | |
1255 | list++; | |
1256 | continue; | |
1257 | } | |
1258 | ||
1259 | /* Since num_parents > 2, this initializer is safe. */ | |
1260 | for (parent = (*list)->parents->next; parent; parent = parent->next) { | |
45ee13b9 JK |
1261 | int edge_value = oid_pos(&parent->item->object.oid, |
1262 | ctx->commits.list, | |
1263 | ctx->commits.nr, | |
1264 | commit_to_oid); | |
08fd81c9 | 1265 | |
6c622f9f DS |
1266 | if (edge_value >= 0) |
1267 | edge_value += ctx->new_num_commits_in_base; | |
8a6ac287 | 1268 | else if (ctx->new_base_graph) { |
6c622f9f | 1269 | uint32_t pos; |
809ea28f PS |
1270 | if (find_commit_pos_in_graph(parent->item, |
1271 | ctx->new_base_graph, | |
1272 | &pos)) | |
6c622f9f DS |
1273 | edge_value = pos; |
1274 | } | |
1275 | ||
08fd81c9 | 1276 | if (edge_value < 0) |
cce99cd8 DS |
1277 | BUG("missing parent %s for commit %s", |
1278 | oid_to_hex(&parent->item->object.oid), | |
1279 | oid_to_hex(&(*list)->object.oid)); | |
08fd81c9 DS |
1280 | else if (!parent->next) |
1281 | edge_value |= GRAPH_LAST_EDGE; | |
1282 | ||
1283 | hashwrite_be32(f, edge_value); | |
1284 | } | |
1285 | ||
1286 | list++; | |
1287 | } | |
9bab081d SG |
1288 | |
1289 | return 0; | |
08fd81c9 DS |
1290 | } |
1291 | ||
9bab081d | 1292 | static int write_graph_chunk_bloom_indexes(struct hashfile *f, |
eb907191 | 1293 | void *data) |
76ffbca7 | 1294 | { |
eb907191 | 1295 | struct write_commit_graph_context *ctx = data; |
76ffbca7 GS |
1296 | struct commit **list = ctx->commits.list; |
1297 | struct commit **last = ctx->commits.list + ctx->commits.nr; | |
1298 | uint32_t cur_pos = 0; | |
76ffbca7 GS |
1299 | |
1300 | while (list < last) { | |
312cff52 | 1301 | struct bloom_filter *filter = get_bloom_filter(ctx->r, *list); |
94919742 DS |
1302 | size_t len = filter ? filter->len : 0; |
1303 | cur_pos += len; | |
150cd3b6 | 1304 | display_progress(ctx->progress, ++ctx->progress_cnt); |
76ffbca7 GS |
1305 | hashwrite_be32(f, cur_pos); |
1306 | list++; | |
1307 | } | |
1308 | ||
9bab081d | 1309 | return 0; |
76ffbca7 GS |
1310 | } |
1311 | ||
0087a87b DS |
1312 | static void trace2_bloom_filter_settings(struct write_commit_graph_context *ctx) |
1313 | { | |
1314 | struct json_writer jw = JSON_WRITER_INIT; | |
1315 | ||
1316 | jw_object_begin(&jw, 0); | |
1317 | jw_object_intmax(&jw, "hash_version", ctx->bloom_settings->hash_version); | |
1318 | jw_object_intmax(&jw, "num_hashes", ctx->bloom_settings->num_hashes); | |
1319 | jw_object_intmax(&jw, "bits_per_entry", ctx->bloom_settings->bits_per_entry); | |
97ffa4fa | 1320 | jw_object_intmax(&jw, "max_changed_paths", ctx->bloom_settings->max_changed_paths); |
0087a87b DS |
1321 | jw_end(&jw); |
1322 | ||
1323 | trace2_data_json("bloom", ctx->r, "settings", &jw); | |
1324 | ||
1325 | jw_release(&jw); | |
76ffbca7 GS |
1326 | } |
1327 | ||
9bab081d | 1328 | static int write_graph_chunk_bloom_data(struct hashfile *f, |
eb907191 | 1329 | void *data) |
76ffbca7 | 1330 | { |
eb907191 | 1331 | struct write_commit_graph_context *ctx = data; |
76ffbca7 GS |
1332 | struct commit **list = ctx->commits.list; |
1333 | struct commit **last = ctx->commits.list + ctx->commits.nr; | |
76ffbca7 | 1334 | |
0087a87b DS |
1335 | trace2_bloom_filter_settings(ctx); |
1336 | ||
98037f2b DS |
1337 | hashwrite_be32(f, ctx->bloom_settings->hash_version); |
1338 | hashwrite_be32(f, ctx->bloom_settings->num_hashes); | |
1339 | hashwrite_be32(f, ctx->bloom_settings->bits_per_entry); | |
76ffbca7 GS |
1340 | |
1341 | while (list < last) { | |
312cff52 | 1342 | struct bloom_filter *filter = get_bloom_filter(ctx->r, *list); |
94919742 | 1343 | size_t len = filter ? filter->len : 0; |
94919742 | 1344 | |
150cd3b6 | 1345 | display_progress(ctx->progress, ++ctx->progress_cnt); |
94919742 DS |
1346 | if (len) |
1347 | hashwrite(f, filter->data, len * sizeof(unsigned char)); | |
76ffbca7 GS |
1348 | list++; |
1349 | } | |
1350 | ||
9bab081d | 1351 | return 0; |
76ffbca7 GS |
1352 | } |
1353 | ||
08fd81c9 DS |
1354 | static int add_packed_commits(const struct object_id *oid, |
1355 | struct packed_git *pack, | |
1356 | uint32_t pos, | |
1357 | void *data) | |
1358 | { | |
c9905bea | 1359 | struct write_commit_graph_context *ctx = (struct write_commit_graph_context*)data; |
08fd81c9 DS |
1360 | enum object_type type; |
1361 | off_t offset = nth_packed_object_offset(pack, pos); | |
1362 | struct object_info oi = OBJECT_INFO_INIT; | |
1363 | ||
c9905bea DS |
1364 | if (ctx->progress) |
1365 | display_progress(ctx->progress, ++ctx->progress_done); | |
7b0f2292 | 1366 | |
08fd81c9 | 1367 | oi.typep = &type; |
c9905bea | 1368 | if (packed_object_info(ctx->r, pack, offset, &oi) < 0) |
4f5b532d | 1369 | die(_("unable to get type of object %s"), oid_to_hex(oid)); |
08fd81c9 DS |
1370 | |
1371 | if (type != OBJ_COMMIT) | |
1372 | return 0; | |
1373 | ||
a5f1c448 | 1374 | oid_array_append(&ctx->oids, oid); |
d21ee7d1 JK |
1375 | set_commit_pos(ctx->r, oid); |
1376 | ||
08fd81c9 DS |
1377 | return 0; |
1378 | } | |
1379 | ||
c9905bea | 1380 | static void add_missing_parents(struct write_commit_graph_context *ctx, struct commit *commit) |
4f2542b4 DS |
1381 | { |
1382 | struct commit_list *parent; | |
1383 | for (parent = commit->parents; parent; parent = parent->next) { | |
cb99a34e | 1384 | if (!(parent->item->object.flags & REACHABLE)) { |
a5f1c448 | 1385 | oid_array_append(&ctx->oids, &parent->item->object.oid); |
cb99a34e | 1386 | parent->item->object.flags |= REACHABLE; |
4f2542b4 DS |
1387 | } |
1388 | } | |
1389 | } | |
1390 | ||
c9905bea | 1391 | static void close_reachable(struct write_commit_graph_context *ctx) |
4f2542b4 | 1392 | { |
49bbc57a | 1393 | int i; |
4f2542b4 | 1394 | struct commit *commit; |
98bb7961 TB |
1395 | enum commit_graph_split_flags flags = ctx->opts ? |
1396 | ctx->opts->split_flags : COMMIT_GRAPH_SPLIT_UNSPECIFIED; | |
4f2542b4 | 1397 | |
c9905bea DS |
1398 | if (ctx->report_progress) |
1399 | ctx->progress = start_delayed_progress( | |
1400 | _("Loading known commits in commit graph"), | |
1401 | ctx->oids.nr); | |
1402 | for (i = 0; i < ctx->oids.nr; i++) { | |
1403 | display_progress(ctx->progress, i + 1); | |
a5f1c448 | 1404 | commit = lookup_commit(ctx->r, &ctx->oids.oid[i]); |
4f2542b4 | 1405 | if (commit) |
cb99a34e | 1406 | commit->object.flags |= REACHABLE; |
4f2542b4 | 1407 | } |
c9905bea | 1408 | stop_progress(&ctx->progress); |
4f2542b4 DS |
1409 | |
1410 | /* | |
c9905bea | 1411 | * As this loop runs, ctx->oids.nr may grow, but not more |
4f2542b4 DS |
1412 | * than the number of missing commits in the reachable |
1413 | * closure. | |
1414 | */ | |
c9905bea DS |
1415 | if (ctx->report_progress) |
1416 | ctx->progress = start_delayed_progress( | |
1417 | _("Expanding reachable commits in commit graph"), | |
67fa6aac | 1418 | 0); |
c9905bea DS |
1419 | for (i = 0; i < ctx->oids.nr; i++) { |
1420 | display_progress(ctx->progress, i + 1); | |
a5f1c448 | 1421 | commit = lookup_commit(ctx->r, &ctx->oids.oid[i]); |
4f2542b4 | 1422 | |
6c622f9f DS |
1423 | if (!commit) |
1424 | continue; | |
1425 | if (ctx->split) { | |
c4cc0831 | 1426 | if ((!repo_parse_commit(ctx->r, commit) && |
c49c82aa | 1427 | commit_graph_position(commit) == COMMIT_NOT_FROM_GRAPH) || |
8a6ac287 | 1428 | flags == COMMIT_GRAPH_SPLIT_REPLACE) |
6c622f9f | 1429 | add_missing_parents(ctx, commit); |
c4cc0831 | 1430 | } else if (!repo_parse_commit_no_graph(ctx->r, commit)) |
c9905bea | 1431 | add_missing_parents(ctx, commit); |
4f2542b4 | 1432 | } |
c9905bea | 1433 | stop_progress(&ctx->progress); |
4f2542b4 | 1434 | |
c9905bea DS |
1435 | if (ctx->report_progress) |
1436 | ctx->progress = start_delayed_progress( | |
1437 | _("Clearing commit marks in commit graph"), | |
1438 | ctx->oids.nr); | |
1439 | for (i = 0; i < ctx->oids.nr; i++) { | |
1440 | display_progress(ctx->progress, i + 1); | |
a5f1c448 | 1441 | commit = lookup_commit(ctx->r, &ctx->oids.oid[i]); |
4f2542b4 DS |
1442 | |
1443 | if (commit) | |
cb99a34e | 1444 | commit->object.flags &= ~REACHABLE; |
4f2542b4 | 1445 | } |
c9905bea | 1446 | stop_progress(&ctx->progress); |
4f2542b4 DS |
1447 | } |
1448 | ||
9c2c0a82 | 1449 | static void compute_topological_levels(struct write_commit_graph_context *ctx) |
3258c663 DS |
1450 | { |
1451 | int i; | |
1452 | struct commit_list *list = NULL; | |
1453 | ||
c9905bea | 1454 | if (ctx->report_progress) |
ecc08690 | 1455 | ctx->progress = start_delayed_progress( |
9c2c0a82 | 1456 | _("Computing commit graph topological levels"), |
c9905bea DS |
1457 | ctx->commits.nr); |
1458 | for (i = 0; i < ctx->commits.nr; i++) { | |
90cb1c47 DS |
1459 | struct commit *c = ctx->commits.list[i]; |
1460 | uint32_t level; | |
90cb1c47 DS |
1461 | |
1462 | repo_parse_commit(ctx->r, c); | |
1463 | level = *topo_level_slab_at(ctx->topo_levels, c); | |
4844812b | 1464 | |
c9905bea | 1465 | display_progress(ctx->progress, i + 1); |
9c2c0a82 | 1466 | if (level != GENERATION_NUMBER_ZERO) |
3258c663 DS |
1467 | continue; |
1468 | ||
90cb1c47 | 1469 | commit_list_insert(c, &list); |
3258c663 DS |
1470 | while (list) { |
1471 | struct commit *current = list->item; | |
1472 | struct commit_list *parent; | |
1473 | int all_parents_computed = 1; | |
72a2bfca | 1474 | uint32_t max_level = 0; |
3258c663 DS |
1475 | |
1476 | for (parent = current->parents; parent; parent = parent->next) { | |
90cb1c47 | 1477 | repo_parse_commit(ctx->r, parent->item); |
72a2bfca | 1478 | level = *topo_level_slab_at(ctx->topo_levels, parent->item); |
4844812b | 1479 | |
9c2c0a82 | 1480 | if (level == GENERATION_NUMBER_ZERO) { |
3258c663 DS |
1481 | all_parents_computed = 0; |
1482 | commit_list_insert(parent->item, &list); | |
1483 | break; | |
3258c663 | 1484 | } |
c1a09119 AK |
1485 | |
1486 | if (level > max_level) | |
1487 | max_level = level; | |
3258c663 DS |
1488 | } |
1489 | ||
1490 | if (all_parents_computed) { | |
3258c663 DS |
1491 | pop_commit(&list); |
1492 | ||
d7f92784 AK |
1493 | if (max_level > GENERATION_NUMBER_V1_MAX - 1) |
1494 | max_level = GENERATION_NUMBER_V1_MAX - 1; | |
72a2bfca | 1495 | *topo_level_slab_at(ctx->topo_levels, current) = max_level + 1; |
9c2c0a82 DS |
1496 | } |
1497 | } | |
1498 | } | |
1499 | stop_progress(&ctx->progress); | |
1500 | } | |
1501 | ||
1502 | static void compute_generation_numbers(struct write_commit_graph_context *ctx) | |
1503 | { | |
1504 | int i; | |
1505 | struct commit_list *list = NULL; | |
1506 | ||
1507 | if (ctx->report_progress) | |
1508 | ctx->progress = start_delayed_progress( | |
1509 | _("Computing commit graph generation numbers"), | |
1510 | ctx->commits.nr); | |
fde55b09 DS |
1511 | |
1512 | if (!ctx->trust_generation_numbers) { | |
1513 | for (i = 0; i < ctx->commits.nr; i++) { | |
1514 | struct commit *c = ctx->commits.list[i]; | |
1515 | repo_parse_commit(ctx->r, c); | |
1516 | commit_graph_data_at(c)->generation = GENERATION_NUMBER_ZERO; | |
1517 | } | |
1518 | } | |
1519 | ||
9c2c0a82 DS |
1520 | for (i = 0; i < ctx->commits.nr; i++) { |
1521 | struct commit *c = ctx->commits.list[i]; | |
1522 | timestamp_t corrected_commit_date; | |
1523 | ||
1524 | repo_parse_commit(ctx->r, c); | |
1525 | corrected_commit_date = commit_graph_data_at(c)->generation; | |
1526 | ||
1527 | display_progress(ctx->progress, i + 1); | |
1528 | if (corrected_commit_date != GENERATION_NUMBER_ZERO) | |
1529 | continue; | |
1530 | ||
1531 | commit_list_insert(c, &list); | |
1532 | while (list) { | |
1533 | struct commit *current = list->item; | |
1534 | struct commit_list *parent; | |
1535 | int all_parents_computed = 1; | |
1536 | timestamp_t max_corrected_commit_date = 0; | |
1537 | ||
1538 | for (parent = current->parents; parent; parent = parent->next) { | |
1539 | repo_parse_commit(ctx->r, parent->item); | |
1540 | corrected_commit_date = commit_graph_data_at(parent->item)->generation; | |
1541 | ||
1542 | if (corrected_commit_date == GENERATION_NUMBER_ZERO) { | |
1543 | all_parents_computed = 0; | |
1544 | commit_list_insert(parent->item, &list); | |
1545 | break; | |
1546 | } | |
1547 | ||
1548 | if (corrected_commit_date > max_corrected_commit_date) | |
1549 | max_corrected_commit_date = corrected_commit_date; | |
1550 | } | |
1551 | ||
1552 | if (all_parents_computed) { | |
1553 | pop_commit(&list); | |
c1a09119 AK |
1554 | |
1555 | if (current->date && current->date > max_corrected_commit_date) | |
1556 | max_corrected_commit_date = current->date - 1; | |
1557 | commit_graph_data_at(current)->generation = max_corrected_commit_date + 1; | |
3258c663 DS |
1558 | } |
1559 | } | |
1560 | } | |
75979d94 DS |
1561 | |
1562 | for (i = 0; i < ctx->commits.nr; i++) { | |
1563 | struct commit *c = ctx->commits.list[i]; | |
1564 | timestamp_t offset = commit_graph_data_at(c)->generation - c->date; | |
1565 | if (offset > GENERATION_NUMBER_V2_OFFSET_MAX) | |
1566 | ctx->num_generation_data_overflows++; | |
1567 | } | |
c9905bea | 1568 | stop_progress(&ctx->progress); |
3258c663 DS |
1569 | } |
1570 | ||
312cff52 TB |
1571 | static void trace2_bloom_filter_write_statistics(struct write_commit_graph_context *ctx) |
1572 | { | |
1573 | trace2_data_intmax("commit-graph", ctx->r, "filter-computed", | |
1574 | ctx->count_bloom_filter_computed); | |
1575 | trace2_data_intmax("commit-graph", ctx->r, "filter-not-computed", | |
1576 | ctx->count_bloom_filter_not_computed); | |
59f0d507 TB |
1577 | trace2_data_intmax("commit-graph", ctx->r, "filter-trunc-empty", |
1578 | ctx->count_bloom_filter_trunc_empty); | |
312cff52 TB |
1579 | trace2_data_intmax("commit-graph", ctx->r, "filter-trunc-large", |
1580 | ctx->count_bloom_filter_trunc_large); | |
1581 | } | |
1582 | ||
f97b9325 GS |
1583 | static void compute_bloom_filters(struct write_commit_graph_context *ctx) |
1584 | { | |
1585 | int i; | |
1586 | struct progress *progress = NULL; | |
d21ee7d1 | 1587 | struct commit **sorted_commits; |
809e0327 | 1588 | int max_new_filters; |
f97b9325 GS |
1589 | |
1590 | init_bloom_filters(); | |
1591 | ||
1592 | if (ctx->report_progress) | |
1593 | progress = start_delayed_progress( | |
1594 | _("Computing commit changed paths Bloom filters"), | |
1595 | ctx->commits.nr); | |
1596 | ||
d21ee7d1 JK |
1597 | ALLOC_ARRAY(sorted_commits, ctx->commits.nr); |
1598 | COPY_ARRAY(sorted_commits, ctx->commits.list, ctx->commits.nr); | |
3d112755 GS |
1599 | |
1600 | if (ctx->order_by_pack) | |
1601 | QSORT(sorted_commits, ctx->commits.nr, commit_pos_cmp); | |
1602 | else | |
1603 | QSORT(sorted_commits, ctx->commits.nr, commit_gen_cmp); | |
d21ee7d1 | 1604 | |
809e0327 TB |
1605 | max_new_filters = ctx->opts && ctx->opts->max_new_filters >= 0 ? |
1606 | ctx->opts->max_new_filters : ctx->commits.nr; | |
1607 | ||
f97b9325 | 1608 | for (i = 0; i < ctx->commits.nr; i++) { |
312cff52 | 1609 | enum bloom_filter_computed computed = 0; |
d21ee7d1 | 1610 | struct commit *c = sorted_commits[i]; |
312cff52 TB |
1611 | struct bloom_filter *filter = get_or_compute_bloom_filter( |
1612 | ctx->r, | |
1613 | c, | |
809e0327 | 1614 | ctx->count_bloom_filter_computed < max_new_filters, |
9a7a9ed1 | 1615 | ctx->bloom_settings, |
312cff52 TB |
1616 | &computed); |
1617 | if (computed & BLOOM_COMPUTED) { | |
1618 | ctx->count_bloom_filter_computed++; | |
59f0d507 TB |
1619 | if (computed & BLOOM_TRUNC_EMPTY) |
1620 | ctx->count_bloom_filter_trunc_empty++; | |
312cff52 TB |
1621 | if (computed & BLOOM_TRUNC_LARGE) |
1622 | ctx->count_bloom_filter_trunc_large++; | |
1623 | } else if (computed & BLOOM_NOT_COMPUTED) | |
1624 | ctx->count_bloom_filter_not_computed++; | |
809e0327 TB |
1625 | ctx->total_bloom_filter_data_size += filter |
1626 | ? sizeof(unsigned char) * filter->len : 0; | |
f97b9325 GS |
1627 | display_progress(progress, i + 1); |
1628 | } | |
1629 | ||
312cff52 TB |
1630 | if (trace2_is_enabled()) |
1631 | trace2_bloom_filter_write_statistics(ctx); | |
1632 | ||
d21ee7d1 | 1633 | free(sorted_commits); |
f97b9325 GS |
1634 | stop_progress(&progress); |
1635 | } | |
1636 | ||
1fe10844 TB |
1637 | struct refs_cb_data { |
1638 | struct oidset *commits; | |
d335ce8f | 1639 | struct progress *progress; |
1fe10844 TB |
1640 | }; |
1641 | ||
5cf88fd8 | 1642 | static int add_ref_to_set(const char *refname UNUSED, |
6830c360 | 1643 | const struct object_id *oid, |
5cf88fd8 | 1644 | int flags UNUSED, void *cb_data) |
59fb8770 | 1645 | { |
630cd519 | 1646 | struct object_id peeled; |
1fe10844 | 1647 | struct refs_cb_data *data = (struct refs_cb_data *)cb_data; |
59fb8770 | 1648 | |
36a31792 | 1649 | if (!peel_iterated_oid(oid, &peeled)) |
630cd519 TB |
1650 | oid = &peeled; |
1651 | if (oid_object_info(the_repository, oid, NULL) == OBJ_COMMIT) | |
1652 | oidset_insert(data->commits, oid); | |
d335ce8f TB |
1653 | |
1654 | display_progress(data->progress, oidset_size(data->commits)); | |
59fb8770 | 1655 | |
59fb8770 DS |
1656 | return 0; |
1657 | } | |
1658 | ||
0bd52e27 | 1659 | int write_commit_graph_reachable(struct object_directory *odb, |
39d88318 | 1660 | enum commit_graph_write_flags flags, |
98bb7961 | 1661 | const struct commit_graph_opts *opts) |
59fb8770 | 1662 | { |
6830c360 | 1663 | struct oidset commits = OIDSET_INIT; |
1fe10844 | 1664 | struct refs_cb_data data; |
e103f727 | 1665 | int result; |
59fb8770 | 1666 | |
1fe10844 TB |
1667 | memset(&data, 0, sizeof(data)); |
1668 | data.commits = &commits; | |
d335ce8f TB |
1669 | if (flags & COMMIT_GRAPH_WRITE_PROGRESS) |
1670 | data.progress = start_delayed_progress( | |
1671 | _("Collecting referenced commits"), 0); | |
1fe10844 TB |
1672 | |
1673 | for_each_ref(add_ref_to_set, &data); | |
6f9d5f2f SG |
1674 | |
1675 | stop_progress(&data.progress); | |
1676 | ||
6830c360 | 1677 | result = write_commit_graph(odb, NULL, &commits, |
98bb7961 | 1678 | flags, opts); |
f4dbdfc4 | 1679 | |
6830c360 | 1680 | oidset_clear(&commits); |
e103f727 | 1681 | return result; |
59fb8770 DS |
1682 | } |
1683 | ||
ef5b83f2 | 1684 | static int fill_oids_from_packs(struct write_commit_graph_context *ctx, |
4a047908 | 1685 | const struct string_list *pack_indexes) |
08fd81c9 | 1686 | { |
ef5b83f2 | 1687 | uint32_t i; |
28944739 | 1688 | struct strbuf progress_title = STRBUF_INIT; |
ef5b83f2 DS |
1689 | struct strbuf packname = STRBUF_INIT; |
1690 | int dirlen; | |
51a94d8f | 1691 | int ret = 0; |
08fd81c9 | 1692 | |
0bd52e27 | 1693 | strbuf_addf(&packname, "%s/pack/", ctx->odb->path); |
ef5b83f2 DS |
1694 | dirlen = packname.len; |
1695 | if (ctx->report_progress) { | |
1696 | strbuf_addf(&progress_title, | |
99d60545 ÆAB |
1697 | Q_("Finding commits for commit graph in %"PRIuMAX" pack", |
1698 | "Finding commits for commit graph in %"PRIuMAX" packs", | |
ef5b83f2 | 1699 | pack_indexes->nr), |
99d60545 | 1700 | (uintmax_t)pack_indexes->nr); |
ef5b83f2 DS |
1701 | ctx->progress = start_delayed_progress(progress_title.buf, 0); |
1702 | ctx->progress_done = 0; | |
7547b95b | 1703 | } |
ef5b83f2 DS |
1704 | for (i = 0; i < pack_indexes->nr; i++) { |
1705 | struct packed_git *p; | |
1706 | strbuf_setlen(&packname, dirlen); | |
1707 | strbuf_addstr(&packname, pack_indexes->items[i].string); | |
1708 | p = add_packed_git(packname.buf, packname.len, 1); | |
1709 | if (!p) { | |
51a94d8f ÆAB |
1710 | ret = error(_("error adding pack %s"), packname.buf); |
1711 | goto cleanup; | |
7547b95b | 1712 | } |
ef5b83f2 | 1713 | if (open_pack_index(p)) { |
51a94d8f ÆAB |
1714 | ret = error(_("error opening index for %s"), packname.buf); |
1715 | goto cleanup; | |
ef5b83f2 DS |
1716 | } |
1717 | for_each_object_in_pack(p, add_packed_commits, ctx, | |
1718 | FOR_EACH_OBJECT_PACK_ORDER); | |
1719 | close_pack(p); | |
1720 | free(p); | |
7547b95b DS |
1721 | } |
1722 | ||
51a94d8f | 1723 | cleanup: |
ef5b83f2 | 1724 | stop_progress(&ctx->progress); |
0aa6bce7 | 1725 | strbuf_release(&progress_title); |
ef5b83f2 DS |
1726 | strbuf_release(&packname); |
1727 | ||
51a94d8f | 1728 | return ret; |
ef5b83f2 DS |
1729 | } |
1730 | ||
6830c360 TB |
1731 | static int fill_oids_from_commits(struct write_commit_graph_context *ctx, |
1732 | struct oidset *commits) | |
4c9efe85 | 1733 | { |
6830c360 TB |
1734 | struct oidset_iter iter; |
1735 | struct object_id *oid; | |
1736 | ||
1737 | if (!oidset_size(commits)) | |
1738 | return 0; | |
4c9efe85 | 1739 | |
6830c360 TB |
1740 | oidset_iter_init(commits, &iter); |
1741 | while ((oid = oidset_iter_next(&iter))) { | |
a5f1c448 | 1742 | oid_array_append(&ctx->oids, oid); |
3d5df01b | 1743 | } |
6830c360 | 1744 | |
7c5c9b9c | 1745 | return 0; |
4c9efe85 | 1746 | } |
3d5df01b | 1747 | |
b2c83060 DS |
1748 | static void fill_oids_from_all_packs(struct write_commit_graph_context *ctx) |
1749 | { | |
1750 | if (ctx->report_progress) | |
1751 | ctx->progress = start_delayed_progress( | |
1752 | _("Finding commits for commit graph among packed objects"), | |
1753 | ctx->approx_nr_objects); | |
1754 | for_each_packed_object(add_packed_commits, ctx, | |
1755 | FOR_EACH_OBJECT_PACK_ORDER); | |
1756 | if (ctx->progress_done < ctx->approx_nr_objects) | |
1757 | display_progress(ctx->progress, ctx->approx_nr_objects); | |
1758 | stop_progress(&ctx->progress); | |
1759 | } | |
049d51a2 | 1760 | |
f998d542 DS |
1761 | static void copy_oids_to_commits(struct write_commit_graph_context *ctx) |
1762 | { | |
1763 | uint32_t i; | |
98bb7961 TB |
1764 | enum commit_graph_split_flags flags = ctx->opts ? |
1765 | ctx->opts->split_flags : COMMIT_GRAPH_SPLIT_UNSPECIFIED; | |
08fd81c9 | 1766 | |
f998d542 DS |
1767 | ctx->num_extra_edges = 0; |
1768 | if (ctx->report_progress) | |
1769 | ctx->progress = start_delayed_progress( | |
890226cc | 1770 | _("Finding extra edges in commit graph"), |
f998d542 | 1771 | ctx->oids.nr); |
a5f1c448 JK |
1772 | oid_array_sort(&ctx->oids); |
1773 | for (i = 0; i < ctx->oids.nr; i = oid_array_next_unique(&ctx->oids, i)) { | |
689a146c RS |
1774 | unsigned int num_parents; |
1775 | ||
f998d542 | 1776 | display_progress(ctx->progress, i + 1); |
08fd81c9 | 1777 | |
6c622f9f | 1778 | ALLOC_GROW(ctx->commits.list, ctx->commits.nr + 1, ctx->commits.alloc); |
a5f1c448 | 1779 | ctx->commits.list[ctx->commits.nr] = lookup_commit(ctx->r, &ctx->oids.oid[i]); |
6c622f9f | 1780 | |
8a6ac287 | 1781 | if (ctx->split && flags != COMMIT_GRAPH_SPLIT_REPLACE && |
c49c82aa | 1782 | commit_graph_position(ctx->commits.list[ctx->commits.nr]) != COMMIT_NOT_FROM_GRAPH) |
6c622f9f DS |
1783 | continue; |
1784 | ||
8a6ac287 | 1785 | if (ctx->split && flags == COMMIT_GRAPH_SPLIT_REPLACE) |
c4cc0831 | 1786 | repo_parse_commit(ctx->r, ctx->commits.list[ctx->commits.nr]); |
8a6ac287 | 1787 | else |
c4cc0831 | 1788 | repo_parse_commit_no_graph(ctx->r, ctx->commits.list[ctx->commits.nr]); |
08fd81c9 | 1789 | |
689a146c | 1790 | num_parents = commit_list_count(ctx->commits.list[ctx->commits.nr]->parents); |
08fd81c9 | 1791 | if (num_parents > 2) |
f998d542 | 1792 | ctx->num_extra_edges += num_parents - 1; |
08fd81c9 | 1793 | |
f998d542 | 1794 | ctx->commits.nr++; |
08fd81c9 | 1795 | } |
f998d542 DS |
1796 | stop_progress(&ctx->progress); |
1797 | } | |
08fd81c9 | 1798 | |
6c622f9f DS |
1799 | static int write_graph_chunk_base_1(struct hashfile *f, |
1800 | struct commit_graph *g) | |
1801 | { | |
1802 | int num = 0; | |
1803 | ||
1804 | if (!g) | |
1805 | return 0; | |
1806 | ||
1807 | num = write_graph_chunk_base_1(f, g->base_graph); | |
1808 | hashwrite(f, g->oid.hash, the_hash_algo->rawsz); | |
1809 | return num + 1; | |
1810 | } | |
1811 | ||
1812 | static int write_graph_chunk_base(struct hashfile *f, | |
eb907191 | 1813 | void *data) |
6c622f9f | 1814 | { |
eb907191 | 1815 | struct write_commit_graph_context *ctx = data; |
6c622f9f DS |
1816 | int num = write_graph_chunk_base_1(f, ctx->new_base_graph); |
1817 | ||
1818 | if (num != ctx->num_commit_graphs_after - 1) { | |
1819 | error(_("failed to write correct number of base graph ids")); | |
1820 | return -1; | |
1821 | } | |
1822 | ||
1823 | return 0; | |
1824 | } | |
1825 | ||
238def57 | 1826 | static int write_commit_graph_file(struct write_commit_graph_context *ctx) |
08fd81c9 | 1827 | { |
238def57 | 1828 | uint32_t i; |
6c622f9f | 1829 | int fd; |
08fd81c9 | 1830 | struct hashfile *f; |
08fd81c9 | 1831 | struct lock_file lk = LOCK_INIT; |
c1665998 | 1832 | const unsigned hashsz = the_hash_algo->rawsz; |
28944739 | 1833 | struct strbuf progress_title = STRBUF_INIT; |
47410aa8 | 1834 | struct chunkfile *cf; |
72871b13 | 1835 | unsigned char file_hash[GIT_MAX_RAWSZ]; |
6c622f9f DS |
1836 | |
1837 | if (ctx->split) { | |
1838 | struct strbuf tmp_file = STRBUF_INIT; | |
1839 | ||
1840 | strbuf_addf(&tmp_file, | |
1841 | "%s/info/commit-graphs/tmp_graph_XXXXXX", | |
0bd52e27 | 1842 | ctx->odb->path); |
6c622f9f DS |
1843 | ctx->graph_name = strbuf_detach(&tmp_file, NULL); |
1844 | } else { | |
ad2dd5bb | 1845 | ctx->graph_name = get_commit_graph_filename(ctx->odb); |
6c622f9f | 1846 | } |
238def57 | 1847 | |
238def57 DS |
1848 | if (safe_create_leading_directories(ctx->graph_name)) { |
1849 | UNLEAK(ctx->graph_name); | |
1850 | error(_("unable to create leading directories of %s"), | |
1851 | ctx->graph_name); | |
1852 | return -1; | |
f4dbdfc4 | 1853 | } |
08fd81c9 | 1854 | |
6c622f9f | 1855 | if (ctx->split) { |
663b2b1b | 1856 | char *lock_name = get_commit_graph_chain_filename(ctx->odb); |
08fd81c9 | 1857 | |
45a4365c TB |
1858 | hold_lock_file_for_update_mode(&lk, lock_name, |
1859 | LOCK_DIE_ON_ERROR, 0444); | |
ef3fe214 | 1860 | free(lock_name); |
08fd81c9 | 1861 | |
6c622f9f DS |
1862 | fd = git_mkstemp_mode(ctx->graph_name, 0444); |
1863 | if (fd < 0) { | |
a2d57e22 | 1864 | error(_("unable to create temporary graph layer")); |
6c622f9f DS |
1865 | return -1; |
1866 | } | |
1867 | ||
f4d62847 TB |
1868 | if (adjust_shared_perm(ctx->graph_name)) { |
1869 | error(_("unable to adjust shared permissions for '%s'"), | |
1870 | ctx->graph_name); | |
1871 | return -1; | |
1872 | } | |
1873 | ||
6c622f9f DS |
1874 | f = hashfd(fd, ctx->graph_name); |
1875 | } else { | |
1f9becae TB |
1876 | hold_lock_file_for_update_mode(&lk, ctx->graph_name, |
1877 | LOCK_DIE_ON_ERROR, 0444); | |
a52cdce9 MÅ |
1878 | fd = get_lock_file_fd(&lk); |
1879 | f = hashfd(fd, get_lock_file_path(&lk)); | |
6c622f9f | 1880 | } |
08fd81c9 | 1881 | |
47410aa8 DS |
1882 | cf = init_chunkfile(f); |
1883 | ||
1884 | add_chunk(cf, GRAPH_CHUNKID_OIDFANOUT, GRAPH_FANOUT_SIZE, | |
1885 | write_graph_chunk_fanout); | |
1886 | add_chunk(cf, GRAPH_CHUNKID_OIDLOOKUP, hashsz * ctx->commits.nr, | |
1887 | write_graph_chunk_oids); | |
1888 | add_chunk(cf, GRAPH_CHUNKID_DATA, (hashsz + 16) * ctx->commits.nr, | |
1889 | write_graph_chunk_data); | |
e8b63005 | 1890 | |
47410aa8 DS |
1891 | if (ctx->write_generation_data) |
1892 | add_chunk(cf, GRAPH_CHUNKID_GENERATION_DATA, | |
1893 | sizeof(uint32_t) * ctx->commits.nr, | |
1894 | write_graph_chunk_generation_data); | |
1895 | if (ctx->num_generation_data_overflows) | |
1896 | add_chunk(cf, GRAPH_CHUNKID_GENERATION_DATA_OVERFLOW, | |
1897 | sizeof(timestamp_t) * ctx->num_generation_data_overflows, | |
1898 | write_graph_chunk_generation_data_overflow); | |
1899 | if (ctx->num_extra_edges) | |
1900 | add_chunk(cf, GRAPH_CHUNKID_EXTRAEDGES, | |
1901 | 4 * ctx->num_extra_edges, | |
1902 | write_graph_chunk_extra_edges); | |
76ffbca7 | 1903 | if (ctx->changed_paths) { |
47410aa8 DS |
1904 | add_chunk(cf, GRAPH_CHUNKID_BLOOMINDEXES, |
1905 | sizeof(uint32_t) * ctx->commits.nr, | |
1906 | write_graph_chunk_bloom_indexes); | |
1907 | add_chunk(cf, GRAPH_CHUNKID_BLOOMDATA, | |
1908 | sizeof(uint32_t) * 3 | |
1909 | + ctx->total_bloom_filter_data_size, | |
1910 | write_graph_chunk_bloom_data); | |
76ffbca7 | 1911 | } |
47410aa8 DS |
1912 | if (ctx->num_commit_graphs_after > 1) |
1913 | add_chunk(cf, GRAPH_CHUNKID_BASE, | |
1914 | hashsz * (ctx->num_commit_graphs_after - 1), | |
1915 | write_graph_chunk_base); | |
144354b0 DS |
1916 | |
1917 | hashwrite_be32(f, GRAPH_SIGNATURE); | |
1918 | ||
1919 | hashwrite_u8(f, GRAPH_VERSION); | |
d9fef9d9 | 1920 | hashwrite_u8(f, oid_version(the_hash_algo)); |
47410aa8 | 1921 | hashwrite_u8(f, get_num_chunks(cf)); |
6c622f9f | 1922 | hashwrite_u8(f, ctx->num_commit_graphs_after - 1); |
08fd81c9 | 1923 | |
238def57 | 1924 | if (ctx->report_progress) { |
28944739 ÆAB |
1925 | strbuf_addf(&progress_title, |
1926 | Q_("Writing out commit graph in %d pass", | |
1927 | "Writing out commit graph in %d passes", | |
c4ff24bb TB |
1928 | get_num_chunks(cf)), |
1929 | get_num_chunks(cf)); | |
238def57 | 1930 | ctx->progress = start_delayed_progress( |
28944739 | 1931 | progress_title.buf, |
c4ff24bb | 1932 | get_num_chunks(cf) * ctx->commits.nr); |
28944739 | 1933 | } |
17e6275f | 1934 | |
47410aa8 | 1935 | write_chunkfile(cf, ctx); |
17e6275f | 1936 | |
238def57 | 1937 | stop_progress(&ctx->progress); |
28944739 | 1938 | strbuf_release(&progress_title); |
08fd81c9 | 1939 | |
6c622f9f DS |
1940 | if (ctx->split && ctx->base_graph_name && ctx->num_commit_graphs_after > 1) { |
1941 | char *new_base_hash = xstrdup(oid_to_hex(&ctx->new_base_graph->oid)); | |
ad2dd5bb | 1942 | char *new_base_name = get_split_graph_filename(ctx->new_base_graph->odb, new_base_hash); |
6c622f9f DS |
1943 | |
1944 | free(ctx->commit_graph_filenames_after[ctx->num_commit_graphs_after - 2]); | |
1945 | free(ctx->commit_graph_hash_after[ctx->num_commit_graphs_after - 2]); | |
1946 | ctx->commit_graph_filenames_after[ctx->num_commit_graphs_after - 2] = new_base_name; | |
1947 | ctx->commit_graph_hash_after[ctx->num_commit_graphs_after - 2] = new_base_hash; | |
1948 | } | |
1949 | ||
c3a3a964 | 1950 | close_commit_graph(ctx->r->objects); |
020406ea NS |
1951 | finalize_hashfile(f, file_hash, FSYNC_COMPONENT_COMMIT_GRAPH, |
1952 | CSUM_HASH_IN_STREAM | CSUM_FSYNC); | |
47410aa8 | 1953 | free_chunkfile(cf); |
6c622f9f DS |
1954 | |
1955 | if (ctx->split) { | |
1956 | FILE *chainf = fdopen_lock_file(&lk, "w"); | |
1957 | char *final_graph_name; | |
1958 | int result; | |
1959 | ||
1960 | close(fd); | |
1961 | ||
1962 | if (!chainf) { | |
1963 | error(_("unable to open commit-graph chain file")); | |
1964 | return -1; | |
1965 | } | |
1966 | ||
1967 | if (ctx->base_graph_name) { | |
8a6ac287 TB |
1968 | const char *dest; |
1969 | int idx = ctx->num_commit_graphs_after - 1; | |
1970 | if (ctx->num_commit_graphs_after > 1) | |
1971 | idx--; | |
1972 | ||
1973 | dest = ctx->commit_graph_filenames_after[idx]; | |
6c622f9f | 1974 | |
135a7123 DS |
1975 | if (strcmp(ctx->base_graph_name, dest)) { |
1976 | result = rename(ctx->base_graph_name, dest); | |
1977 | ||
1978 | if (result) { | |
1979 | error(_("failed to rename base commit-graph file")); | |
1980 | return -1; | |
1981 | } | |
6c622f9f DS |
1982 | } |
1983 | } else { | |
ad2dd5bb | 1984 | char *graph_name = get_commit_graph_filename(ctx->odb); |
6c622f9f | 1985 | unlink(graph_name); |
ef3fe214 | 1986 | free(graph_name); |
6c622f9f DS |
1987 | } |
1988 | ||
72871b13 | 1989 | ctx->commit_graph_hash_after[ctx->num_commit_graphs_after - 1] = xstrdup(hash_to_hex(file_hash)); |
ad2dd5bb | 1990 | final_graph_name = get_split_graph_filename(ctx->odb, |
6c622f9f DS |
1991 | ctx->commit_graph_hash_after[ctx->num_commit_graphs_after - 1]); |
1992 | ctx->commit_graph_filenames_after[ctx->num_commit_graphs_after - 1] = final_graph_name; | |
1993 | ||
1994 | result = rename(ctx->graph_name, final_graph_name); | |
1995 | ||
1996 | for (i = 0; i < ctx->num_commit_graphs_after; i++) | |
a52cdce9 | 1997 | fprintf(get_lock_file_fp(&lk), "%s\n", ctx->commit_graph_hash_after[i]); |
6c622f9f DS |
1998 | |
1999 | if (result) { | |
2000 | error(_("failed to rename temporary commit-graph file")); | |
2001 | return -1; | |
2002 | } | |
2003 | } | |
2004 | ||
08fd81c9 DS |
2005 | commit_lock_file(&lk); |
2006 | ||
238def57 DS |
2007 | return 0; |
2008 | } | |
2009 | ||
1771be90 DS |
2010 | static void split_graph_merge_strategy(struct write_commit_graph_context *ctx) |
2011 | { | |
8da02ce6 AH |
2012 | struct commit_graph *g; |
2013 | uint32_t num_commits; | |
fdbde82f | 2014 | enum commit_graph_split_flags flags = COMMIT_GRAPH_SPLIT_UNSPECIFIED; |
1771be90 DS |
2015 | uint32_t i; |
2016 | ||
c2bc6e6a DS |
2017 | int max_commits = 0; |
2018 | int size_mult = 2; | |
2019 | ||
98bb7961 TB |
2020 | if (ctx->opts) { |
2021 | max_commits = ctx->opts->max_commits; | |
63020f17 | 2022 | |
98bb7961 TB |
2023 | if (ctx->opts->size_multiple) |
2024 | size_mult = ctx->opts->size_multiple; | |
fdbde82f | 2025 | |
98bb7961 | 2026 | flags = ctx->opts->split_flags; |
c2bc6e6a DS |
2027 | } |
2028 | ||
1771be90 | 2029 | g = ctx->r->objects->commit_graph; |
8da02ce6 | 2030 | num_commits = ctx->commits.nr; |
8a6ac287 TB |
2031 | if (flags == COMMIT_GRAPH_SPLIT_REPLACE) |
2032 | ctx->num_commit_graphs_after = 1; | |
2033 | else | |
2034 | ctx->num_commit_graphs_after = ctx->num_commit_graphs_before + 1; | |
1771be90 | 2035 | |
8a6ac287 TB |
2036 | if (flags != COMMIT_GRAPH_SPLIT_MERGE_PROHIBITED && |
2037 | flags != COMMIT_GRAPH_SPLIT_REPLACE) { | |
fdbde82f TB |
2038 | while (g && (g->num_commits <= size_mult * num_commits || |
2039 | (max_commits && num_commits > max_commits))) { | |
2040 | if (g->odb != ctx->odb) | |
2041 | break; | |
c523035c | 2042 | |
fdbde82f TB |
2043 | num_commits += g->num_commits; |
2044 | g = g->base_graph; | |
1771be90 | 2045 | |
fdbde82f TB |
2046 | ctx->num_commit_graphs_after--; |
2047 | } | |
1771be90 DS |
2048 | } |
2049 | ||
8a6ac287 TB |
2050 | if (flags != COMMIT_GRAPH_SPLIT_REPLACE) |
2051 | ctx->new_base_graph = g; | |
2052 | else if (ctx->num_commit_graphs_after != 1) | |
2053 | BUG("split_graph_merge_strategy: num_commit_graphs_after " | |
2054 | "should be 1 with --split=replace"); | |
1771be90 | 2055 | |
c523035c | 2056 | if (ctx->num_commit_graphs_after == 2) { |
ad2dd5bb | 2057 | char *old_graph_name = get_commit_graph_filename(g->odb); |
c523035c DS |
2058 | |
2059 | if (!strcmp(g->filename, old_graph_name) && | |
ad2dd5bb | 2060 | g->odb != ctx->odb) { |
c523035c DS |
2061 | ctx->num_commit_graphs_after = 1; |
2062 | ctx->new_base_graph = NULL; | |
2063 | } | |
2064 | ||
2065 | free(old_graph_name); | |
2066 | } | |
2067 | ||
b78a556a TB |
2068 | CALLOC_ARRAY(ctx->commit_graph_filenames_after, ctx->num_commit_graphs_after); |
2069 | CALLOC_ARRAY(ctx->commit_graph_hash_after, ctx->num_commit_graphs_after); | |
1771be90 DS |
2070 | |
2071 | for (i = 0; i < ctx->num_commit_graphs_after && | |
2072 | i < ctx->num_commit_graphs_before; i++) | |
2073 | ctx->commit_graph_filenames_after[i] = xstrdup(ctx->commit_graph_filenames_before[i]); | |
2074 | ||
2075 | i = ctx->num_commit_graphs_before - 1; | |
2076 | g = ctx->r->objects->commit_graph; | |
2077 | ||
2078 | while (g) { | |
2079 | if (i < ctx->num_commit_graphs_after) | |
2080 | ctx->commit_graph_hash_after[i] = xstrdup(oid_to_hex(&g->oid)); | |
2081 | ||
1fdc383c AK |
2082 | /* |
2083 | * If the topmost remaining layer has generation data chunk, the | |
2084 | * resultant layer also has generation data chunk. | |
2085 | */ | |
2086 | if (i == ctx->num_commit_graphs_after - 2) | |
2087 | ctx->write_generation_data = !!g->chunk_generation_data; | |
2088 | ||
1771be90 DS |
2089 | i--; |
2090 | g = g->base_graph; | |
2091 | } | |
2092 | } | |
2093 | ||
2094 | static void merge_commit_graph(struct write_commit_graph_context *ctx, | |
2095 | struct commit_graph *g) | |
2096 | { | |
2097 | uint32_t i; | |
2098 | uint32_t offset = g->num_commits_in_base; | |
2099 | ||
2100 | ALLOC_GROW(ctx->commits.list, ctx->commits.nr + g->num_commits, ctx->commits.alloc); | |
2101 | ||
2102 | for (i = 0; i < g->num_commits; i++) { | |
2103 | struct object_id oid; | |
2104 | struct commit *result; | |
2105 | ||
2106 | display_progress(ctx->progress, i + 1); | |
2107 | ||
2108 | load_oid_from_graph(g, i + offset, &oid); | |
2109 | ||
2110 | /* only add commits if they still exist in the repo */ | |
2111 | result = lookup_commit_reference_gently(ctx->r, &oid, 1); | |
2112 | ||
2113 | if (result) { | |
2114 | ctx->commits.list[ctx->commits.nr] = result; | |
2115 | ctx->commits.nr++; | |
2116 | } | |
2117 | } | |
2118 | } | |
2119 | ||
2120 | static int commit_compare(const void *_a, const void *_b) | |
2121 | { | |
2122 | const struct commit *a = *(const struct commit **)_a; | |
2123 | const struct commit *b = *(const struct commit **)_b; | |
2124 | return oidcmp(&a->object.oid, &b->object.oid); | |
2125 | } | |
2126 | ||
2127 | static void sort_and_scan_merged_commits(struct write_commit_graph_context *ctx) | |
2128 | { | |
150f1157 | 2129 | uint32_t i, dedup_i = 0; |
1771be90 DS |
2130 | |
2131 | if (ctx->report_progress) | |
2132 | ctx->progress = start_delayed_progress( | |
2133 | _("Scanning merged commits"), | |
2134 | ctx->commits.nr); | |
2135 | ||
2136 | QSORT(ctx->commits.list, ctx->commits.nr, commit_compare); | |
2137 | ||
2138 | ctx->num_extra_edges = 0; | |
2139 | for (i = 0; i < ctx->commits.nr; i++) { | |
40112249 | 2140 | display_progress(ctx->progress, i + 1); |
1771be90 DS |
2141 | |
2142 | if (i && oideq(&ctx->commits.list[i - 1]->object.oid, | |
2143 | &ctx->commits.list[i]->object.oid)) { | |
150f1157 DS |
2144 | /* |
2145 | * Silently ignore duplicates. These were likely | |
2146 | * created due to a commit appearing in multiple | |
2147 | * layers of the chain, which is unexpected but | |
2148 | * not invalid. We should make sure there is a | |
2149 | * unique copy in the new layer. | |
2150 | */ | |
1771be90 | 2151 | } else { |
689a146c | 2152 | unsigned int num_parents; |
1771be90 | 2153 | |
150f1157 DS |
2154 | ctx->commits.list[dedup_i] = ctx->commits.list[i]; |
2155 | dedup_i++; | |
2156 | ||
689a146c | 2157 | num_parents = commit_list_count(ctx->commits.list[i]->parents); |
1771be90 | 2158 | if (num_parents > 2) |
a35bea40 | 2159 | ctx->num_extra_edges += num_parents - 1; |
1771be90 DS |
2160 | } |
2161 | } | |
2162 | ||
150f1157 DS |
2163 | ctx->commits.nr = dedup_i; |
2164 | ||
1771be90 DS |
2165 | stop_progress(&ctx->progress); |
2166 | } | |
2167 | ||
2168 | static void merge_commit_graphs(struct write_commit_graph_context *ctx) | |
2169 | { | |
2170 | struct commit_graph *g = ctx->r->objects->commit_graph; | |
2171 | uint32_t current_graph_number = ctx->num_commit_graphs_before; | |
1771be90 DS |
2172 | |
2173 | while (g && current_graph_number >= ctx->num_commit_graphs_after) { | |
2174 | current_graph_number--; | |
2175 | ||
d68ce906 RS |
2176 | if (ctx->report_progress) |
2177 | ctx->progress = start_delayed_progress(_("Merging commit-graph"), 0); | |
1771be90 DS |
2178 | |
2179 | merge_commit_graph(ctx, g); | |
2180 | stop_progress(&ctx->progress); | |
1771be90 DS |
2181 | |
2182 | g = g->base_graph; | |
2183 | } | |
2184 | ||
2185 | if (g) { | |
2186 | ctx->new_base_graph = g; | |
2187 | ctx->new_num_commits_in_base = g->num_commits + g->num_commits_in_base; | |
2188 | } | |
2189 | ||
2190 | if (ctx->new_base_graph) | |
2191 | ctx->base_graph_name = xstrdup(ctx->new_base_graph->filename); | |
2192 | ||
2193 | sort_and_scan_merged_commits(ctx); | |
2194 | } | |
2195 | ||
8d84097f DS |
2196 | static void mark_commit_graphs(struct write_commit_graph_context *ctx) |
2197 | { | |
2198 | uint32_t i; | |
2199 | time_t now = time(NULL); | |
2200 | ||
2201 | for (i = ctx->num_commit_graphs_after - 1; i < ctx->num_commit_graphs_before; i++) { | |
2202 | struct stat st; | |
2203 | struct utimbuf updated_time; | |
2204 | ||
7c898554 ÆAB |
2205 | if (stat(ctx->commit_graph_filenames_before[i], &st) < 0) |
2206 | continue; | |
8d84097f DS |
2207 | |
2208 | updated_time.actime = st.st_atime; | |
2209 | updated_time.modtime = now; | |
2210 | utime(ctx->commit_graph_filenames_before[i], &updated_time); | |
2211 | } | |
2212 | } | |
2213 | ||
2214 | static void expire_commit_graphs(struct write_commit_graph_context *ctx) | |
2215 | { | |
2216 | struct strbuf path = STRBUF_INIT; | |
2217 | DIR *dir; | |
2218 | struct dirent *de; | |
2219 | size_t dirnamelen; | |
c2bc6e6a DS |
2220 | timestamp_t expire_time = time(NULL); |
2221 | ||
98bb7961 TB |
2222 | if (ctx->opts && ctx->opts->expire_time) |
2223 | expire_time = ctx->opts->expire_time; | |
ba41112a | 2224 | if (!ctx->split) { |
663b2b1b | 2225 | char *chain_file_name = get_commit_graph_chain_filename(ctx->odb); |
ba41112a DS |
2226 | unlink(chain_file_name); |
2227 | free(chain_file_name); | |
2228 | ctx->num_commit_graphs_after = 0; | |
2229 | } | |
8d84097f | 2230 | |
0bd52e27 | 2231 | strbuf_addstr(&path, ctx->odb->path); |
8d84097f DS |
2232 | strbuf_addstr(&path, "/info/commit-graphs"); |
2233 | dir = opendir(path.buf); | |
2234 | ||
0aa6bce7 RS |
2235 | if (!dir) |
2236 | goto out; | |
8d84097f DS |
2237 | |
2238 | strbuf_addch(&path, '/'); | |
2239 | dirnamelen = path.len; | |
2240 | while ((de = readdir(dir)) != NULL) { | |
2241 | struct stat st; | |
2242 | uint32_t i, found = 0; | |
2243 | ||
2244 | strbuf_setlen(&path, dirnamelen); | |
2245 | strbuf_addstr(&path, de->d_name); | |
2246 | ||
7c898554 ÆAB |
2247 | if (stat(path.buf, &st) < 0) |
2248 | continue; | |
8d84097f DS |
2249 | |
2250 | if (st.st_mtime > expire_time) | |
2251 | continue; | |
2252 | if (path.len < 6 || strcmp(path.buf + path.len - 6, ".graph")) | |
2253 | continue; | |
2254 | ||
2255 | for (i = 0; i < ctx->num_commit_graphs_after; i++) { | |
2256 | if (!strcmp(ctx->commit_graph_filenames_after[i], | |
2257 | path.buf)) { | |
2258 | found = 1; | |
2259 | break; | |
2260 | } | |
2261 | } | |
2262 | ||
2263 | if (!found) | |
2264 | unlink(path.buf); | |
8d84097f | 2265 | } |
0aa6bce7 RS |
2266 | |
2267 | out: | |
12f1ae53 ML |
2268 | if(dir) |
2269 | closedir(dir); | |
0aa6bce7 | 2270 | strbuf_release(&path); |
8d84097f DS |
2271 | } |
2272 | ||
0bd52e27 | 2273 | int write_commit_graph(struct object_directory *odb, |
4a047908 | 2274 | const struct string_list *const pack_indexes, |
6830c360 | 2275 | struct oidset *commits, |
39d88318 | 2276 | enum commit_graph_write_flags flags, |
98bb7961 | 2277 | const struct commit_graph_opts *opts) |
238def57 | 2278 | { |
c7ef8fe6 | 2279 | struct repository *r = the_repository; |
238def57 | 2280 | struct write_commit_graph_context *ctx; |
1cbdbf3b | 2281 | uint32_t i; |
e103f727 | 2282 | int res = 0; |
8a6ac287 | 2283 | int replace = 0; |
9a7a9ed1 | 2284 | struct bloom_filter_settings bloom_settings = DEFAULT_BLOOM_FILTER_SETTINGS; |
72a2bfca | 2285 | struct topo_level_slab topo_levels; |
08fd81c9 | 2286 | |
c7ef8fe6 DS |
2287 | prepare_repo_settings(r); |
2288 | if (!r->settings.core_commit_graph) { | |
85102ac7 DS |
2289 | warning(_("attempting to write a commit-graph, but 'core.commitGraph' is disabled")); |
2290 | return 0; | |
2291 | } | |
c7ef8fe6 | 2292 | if (!commit_graph_compatible(r)) |
e103f727 | 2293 | return 0; |
d6538246 | 2294 | |
ca56dadb | 2295 | CALLOC_ARRAY(ctx, 1); |
c7ef8fe6 | 2296 | ctx->r = r; |
0bd52e27 | 2297 | ctx->odb = odb; |
39d88318 SG |
2298 | ctx->append = flags & COMMIT_GRAPH_WRITE_APPEND ? 1 : 0; |
2299 | ctx->report_progress = flags & COMMIT_GRAPH_WRITE_PROGRESS ? 1 : 0; | |
2300 | ctx->split = flags & COMMIT_GRAPH_WRITE_SPLIT ? 1 : 0; | |
98bb7961 | 2301 | ctx->opts = opts; |
f97b9325 | 2302 | ctx->total_bloom_filter_data_size = 0; |
702110aa | 2303 | ctx->write_generation_data = (get_configured_generation_version(r) == 2); |
e8b63005 | 2304 | ctx->num_generation_data_overflows = 0; |
6c622f9f | 2305 | |
9a7a9ed1 TB |
2306 | bloom_settings.bits_per_entry = git_env_ulong("GIT_TEST_BLOOM_SETTINGS_BITS_PER_ENTRY", |
2307 | bloom_settings.bits_per_entry); | |
2308 | bloom_settings.num_hashes = git_env_ulong("GIT_TEST_BLOOM_SETTINGS_NUM_HASHES", | |
2309 | bloom_settings.num_hashes); | |
2310 | bloom_settings.max_changed_paths = git_env_ulong("GIT_TEST_BLOOM_SETTINGS_MAX_CHANGED_PATHS", | |
2311 | bloom_settings.max_changed_paths); | |
2312 | ctx->bloom_settings = &bloom_settings; | |
2313 | ||
72a2bfca AK |
2314 | init_topo_level_slab(&topo_levels); |
2315 | ctx->topo_levels = &topo_levels; | |
2316 | ||
bc50d6c9 | 2317 | prepare_commit_graph(ctx->r); |
72a2bfca AK |
2318 | if (ctx->r->objects->commit_graph) { |
2319 | struct commit_graph *g = ctx->r->objects->commit_graph; | |
2320 | ||
2321 | while (g) { | |
2322 | g->topo_levels = &topo_levels; | |
2323 | g = g->base_graph; | |
2324 | } | |
2325 | } | |
2326 | ||
0087a87b DS |
2327 | if (flags & COMMIT_GRAPH_WRITE_BLOOM_FILTERS) |
2328 | ctx->changed_paths = 1; | |
2329 | if (!(flags & COMMIT_GRAPH_NO_WRITE_BLOOM_FILTERS)) { | |
2330 | struct commit_graph *g; | |
0087a87b DS |
2331 | |
2332 | g = ctx->r->objects->commit_graph; | |
2333 | ||
2334 | /* We have changed-paths already. Keep them in the next graph */ | |
2335 | if (g && g->chunk_bloom_data) { | |
2336 | ctx->changed_paths = 1; | |
2337 | ctx->bloom_settings = g->bloom_filter_settings; | |
2338 | } | |
2339 | } | |
2340 | ||
6c622f9f | 2341 | if (ctx->split) { |
bc50d6c9 | 2342 | struct commit_graph *g = ctx->r->objects->commit_graph; |
6c622f9f DS |
2343 | |
2344 | while (g) { | |
2345 | ctx->num_commit_graphs_before++; | |
2346 | g = g->base_graph; | |
2347 | } | |
2348 | ||
2349 | if (ctx->num_commit_graphs_before) { | |
2350 | ALLOC_ARRAY(ctx->commit_graph_filenames_before, ctx->num_commit_graphs_before); | |
2351 | i = ctx->num_commit_graphs_before; | |
2352 | g = ctx->r->objects->commit_graph; | |
2353 | ||
2354 | while (g) { | |
2355 | ctx->commit_graph_filenames_before[--i] = xstrdup(g->filename); | |
2356 | g = g->base_graph; | |
2357 | } | |
2358 | } | |
8a6ac287 | 2359 | |
98bb7961 TB |
2360 | if (ctx->opts) |
2361 | replace = ctx->opts->split_flags & COMMIT_GRAPH_SPLIT_REPLACE; | |
6c622f9f | 2362 | } |
c9905bea DS |
2363 | |
2364 | ctx->approx_nr_objects = approximate_object_count(); | |
c9905bea | 2365 | |
c9905bea DS |
2366 | if (ctx->append && ctx->r->objects->commit_graph) { |
2367 | struct commit_graph *g = ctx->r->objects->commit_graph; | |
2368 | for (i = 0; i < g->num_commits; i++) { | |
a5f1c448 | 2369 | struct object_id oid; |
92e2cab9 | 2370 | oidread(&oid, g->chunk_oid_lookup + g->hash_len * i); |
a5f1c448 | 2371 | oid_array_append(&ctx->oids, &oid); |
7547b95b DS |
2372 | } |
2373 | } | |
2374 | ||
049d51a2 | 2375 | if (pack_indexes) { |
3d112755 | 2376 | ctx->order_by_pack = 1; |
ef5b83f2 DS |
2377 | if ((res = fill_oids_from_packs(ctx, pack_indexes))) |
2378 | goto cleanup; | |
3d5df01b DS |
2379 | } |
2380 | ||
6830c360 TB |
2381 | if (commits) { |
2382 | if ((res = fill_oids_from_commits(ctx, commits))) | |
7c5c9b9c SG |
2383 | goto cleanup; |
2384 | } | |
3d5df01b | 2385 | |
9b6606f4 | 2386 | if (!pack_indexes && !commits) { |
3d112755 | 2387 | ctx->order_by_pack = 1; |
b2c83060 | 2388 | fill_oids_from_all_packs(ctx); |
3d112755 | 2389 | } |
049d51a2 | 2390 | |
c9905bea | 2391 | close_reachable(ctx); |
08fd81c9 | 2392 | |
f998d542 | 2393 | copy_oids_to_commits(ctx); |
08fd81c9 | 2394 | |
c9905bea | 2395 | if (ctx->commits.nr >= GRAPH_EDGE_LAST_MASK) { |
e103f727 DS |
2396 | error(_("too many commits to write graph")); |
2397 | res = -1; | |
2398 | goto cleanup; | |
2399 | } | |
08fd81c9 | 2400 | |
8a6ac287 | 2401 | if (!ctx->commits.nr && !replace) |
6c622f9f DS |
2402 | goto cleanup; |
2403 | ||
1771be90 DS |
2404 | if (ctx->split) { |
2405 | split_graph_merge_strategy(ctx); | |
2406 | ||
8a6ac287 TB |
2407 | if (!replace) |
2408 | merge_commit_graphs(ctx); | |
1771be90 | 2409 | } else |
6c622f9f DS |
2410 | ctx->num_commit_graphs_after = 1; |
2411 | ||
fde55b09 | 2412 | ctx->trust_generation_numbers = validate_mixed_generation_chain(ctx->r->objects->commit_graph); |
1fdc383c | 2413 | |
9c2c0a82 DS |
2414 | compute_topological_levels(ctx); |
2415 | if (ctx->write_generation_data) | |
2416 | compute_generation_numbers(ctx); | |
08fd81c9 | 2417 | |
f97b9325 GS |
2418 | if (ctx->changed_paths) |
2419 | compute_bloom_filters(ctx); | |
2420 | ||
238def57 | 2421 | res = write_commit_graph_file(ctx); |
08fd81c9 | 2422 | |
ba41112a | 2423 | if (ctx->split) |
8d84097f | 2424 | mark_commit_graphs(ctx); |
ba41112a DS |
2425 | |
2426 | expire_commit_graphs(ctx); | |
8d84097f | 2427 | |
e103f727 | 2428 | cleanup: |
238def57 | 2429 | free(ctx->graph_name); |
c9905bea | 2430 | free(ctx->commits.list); |
a5f1c448 | 2431 | oid_array_clear(&ctx->oids); |
bf4bb9f9 | 2432 | clear_topo_level_slab(&topo_levels); |
6c622f9f DS |
2433 | |
2434 | if (ctx->commit_graph_filenames_after) { | |
2435 | for (i = 0; i < ctx->num_commit_graphs_after; i++) { | |
2436 | free(ctx->commit_graph_filenames_after[i]); | |
2437 | free(ctx->commit_graph_hash_after[i]); | |
2438 | } | |
2439 | ||
2440 | for (i = 0; i < ctx->num_commit_graphs_before; i++) | |
2441 | free(ctx->commit_graph_filenames_before[i]); | |
2442 | ||
2443 | free(ctx->commit_graph_filenames_after); | |
2444 | free(ctx->commit_graph_filenames_before); | |
2445 | free(ctx->commit_graph_hash_after); | |
2446 | } | |
2447 | ||
c9905bea | 2448 | free(ctx); |
e103f727 DS |
2449 | |
2450 | return res; | |
08fd81c9 | 2451 | } |
283e68c7 | 2452 | |
41df0e30 | 2453 | #define VERIFY_COMMIT_GRAPH_ERROR_HASH 2 |
283e68c7 DS |
2454 | static int verify_commit_graph_error; |
2455 | ||
48ca53ca | 2456 | __attribute__((format (printf, 1, 2))) |
283e68c7 DS |
2457 | static void graph_report(const char *fmt, ...) |
2458 | { | |
2459 | va_list ap; | |
2460 | ||
2461 | verify_commit_graph_error = 1; | |
2462 | va_start(ap, fmt); | |
2463 | vfprintf(stderr, fmt, ap); | |
2464 | fprintf(stderr, "\n"); | |
2465 | va_end(ap); | |
2466 | } | |
2467 | ||
1373e547 DS |
2468 | #define GENERATION_ZERO_EXISTS 1 |
2469 | #define GENERATION_NUMBER_EXISTS 2 | |
2470 | ||
15316a47 TB |
2471 | static int commit_graph_checksum_valid(struct commit_graph *g) |
2472 | { | |
2473 | return hashfile_checksum_valid(g->data, g->data_len); | |
2474 | } | |
2475 | ||
3da4b609 | 2476 | int verify_commit_graph(struct repository *r, struct commit_graph *g, int flags) |
283e68c7 | 2477 | { |
9bda8467 | 2478 | uint32_t i, cur_fanout_pos = 0; |
72871b13 | 2479 | struct object_id prev_oid, cur_oid; |
1373e547 | 2480 | int generation_zero = 0; |
1f7f557f | 2481 | struct progress *progress = NULL; |
3da4b609 | 2482 | int local_error = 0; |
9bda8467 | 2483 | |
283e68c7 DS |
2484 | if (!g) { |
2485 | graph_report("no commit-graph file loaded"); | |
2486 | return 1; | |
2487 | } | |
2488 | ||
2ac138d5 | 2489 | verify_commit_graph_error = verify_commit_graph_lite(g); |
9bda8467 DS |
2490 | if (verify_commit_graph_error) |
2491 | return verify_commit_graph_error; | |
2492 | ||
15316a47 | 2493 | if (!commit_graph_checksum_valid(g)) { |
41df0e30 DS |
2494 | graph_report(_("the commit-graph file has incorrect checksum and is likely corrupt")); |
2495 | verify_commit_graph_error = VERIFY_COMMIT_GRAPH_ERROR_HASH; | |
2496 | } | |
2497 | ||
9bda8467 | 2498 | for (i = 0; i < g->num_commits; i++) { |
2e3c0737 DS |
2499 | struct commit *graph_commit; |
2500 | ||
92e2cab9 | 2501 | oidread(&cur_oid, g->chunk_oid_lookup + g->hash_len * i); |
9bda8467 DS |
2502 | |
2503 | if (i && oidcmp(&prev_oid, &cur_oid) >= 0) | |
93b4405f | 2504 | graph_report(_("commit-graph has incorrect OID order: %s then %s"), |
9bda8467 DS |
2505 | oid_to_hex(&prev_oid), |
2506 | oid_to_hex(&cur_oid)); | |
2507 | ||
2508 | oidcpy(&prev_oid, &cur_oid); | |
2509 | ||
2510 | while (cur_oid.hash[0] > cur_fanout_pos) { | |
2511 | uint32_t fanout_value = get_be32(g->chunk_oid_fanout + cur_fanout_pos); | |
2512 | ||
2513 | if (i != fanout_value) | |
93b4405f | 2514 | graph_report(_("commit-graph has incorrect fanout value: fanout[%d] = %u != %u"), |
9bda8467 DS |
2515 | cur_fanout_pos, fanout_value, i); |
2516 | cur_fanout_pos++; | |
2517 | } | |
2e3c0737 | 2518 | |
82952964 | 2519 | graph_commit = lookup_commit(r, &cur_oid); |
4f542b7a | 2520 | if (!parse_commit_in_graph_one(r, g, graph_commit)) |
93b4405f | 2521 | graph_report(_("failed to parse commit %s from commit-graph"), |
2e3c0737 | 2522 | oid_to_hex(&cur_oid)); |
9bda8467 DS |
2523 | } |
2524 | ||
2525 | while (cur_fanout_pos < 256) { | |
2526 | uint32_t fanout_value = get_be32(g->chunk_oid_fanout + cur_fanout_pos); | |
2527 | ||
2528 | if (g->num_commits != fanout_value) | |
93b4405f | 2529 | graph_report(_("commit-graph has incorrect fanout value: fanout[%d] = %u != %u"), |
9bda8467 DS |
2530 | cur_fanout_pos, fanout_value, i); |
2531 | ||
2532 | cur_fanout_pos++; | |
2533 | } | |
2534 | ||
41df0e30 | 2535 | if (verify_commit_graph_error & ~VERIFY_COMMIT_GRAPH_ERROR_HASH) |
96af91d4 DS |
2536 | return verify_commit_graph_error; |
2537 | ||
73716122 GS |
2538 | if (flags & COMMIT_GRAPH_WRITE_PROGRESS) |
2539 | progress = start_progress(_("Verifying commits in commit graph"), | |
2540 | g->num_commits); | |
2541 | ||
96af91d4 | 2542 | for (i = 0; i < g->num_commits; i++) { |
2e3c0737 | 2543 | struct commit *graph_commit, *odb_commit; |
53614b13 | 2544 | struct commit_list *graph_parents, *odb_parents; |
d7f92784 AK |
2545 | timestamp_t max_generation = 0; |
2546 | timestamp_t generation; | |
96af91d4 | 2547 | |
1f7f557f | 2548 | display_progress(progress, i + 1); |
92e2cab9 | 2549 | oidread(&cur_oid, g->chunk_oid_lookup + g->hash_len * i); |
96af91d4 | 2550 | |
82952964 | 2551 | graph_commit = lookup_commit(r, &cur_oid); |
a378509e | 2552 | odb_commit = (struct commit *)create_object(r, &cur_oid, alloc_commit_node(r)); |
96af91d4 | 2553 | if (parse_commit_internal(odb_commit, 0, 0)) { |
93b4405f | 2554 | graph_report(_("failed to parse commit %s from object database for commit-graph"), |
96af91d4 DS |
2555 | oid_to_hex(&cur_oid)); |
2556 | continue; | |
2557 | } | |
2e3c0737 | 2558 | |
4f542b7a | 2559 | if (!oideq(&get_commit_tree_in_graph_one(r, g, graph_commit)->object.oid, |
2e3c0737 | 2560 | get_commit_tree_oid(odb_commit))) |
93b4405f | 2561 | graph_report(_("root tree OID for commit %s in commit-graph is %s != %s"), |
2e3c0737 DS |
2562 | oid_to_hex(&cur_oid), |
2563 | oid_to_hex(get_commit_tree_oid(graph_commit)), | |
2564 | oid_to_hex(get_commit_tree_oid(odb_commit))); | |
53614b13 DS |
2565 | |
2566 | graph_parents = graph_commit->parents; | |
2567 | odb_parents = odb_commit->parents; | |
2568 | ||
2569 | while (graph_parents) { | |
afe8a907 | 2570 | if (!odb_parents) { |
93b4405f | 2571 | graph_report(_("commit-graph parent list for commit %s is too long"), |
53614b13 DS |
2572 | oid_to_hex(&cur_oid)); |
2573 | break; | |
2574 | } | |
2575 | ||
3da4b609 DS |
2576 | /* parse parent in case it is in a base graph */ |
2577 | parse_commit_in_graph_one(r, g, graph_parents->item); | |
2578 | ||
9001dc2a | 2579 | if (!oideq(&graph_parents->item->object.oid, &odb_parents->item->object.oid)) |
93b4405f | 2580 | graph_report(_("commit-graph parent for %s is %s != %s"), |
53614b13 DS |
2581 | oid_to_hex(&cur_oid), |
2582 | oid_to_hex(&graph_parents->item->object.oid), | |
2583 | oid_to_hex(&odb_parents->item->object.oid)); | |
2584 | ||
c752ad09 AK |
2585 | generation = commit_graph_generation(graph_parents->item); |
2586 | if (generation > max_generation) | |
2587 | max_generation = generation; | |
1373e547 | 2588 | |
53614b13 DS |
2589 | graph_parents = graph_parents->next; |
2590 | odb_parents = odb_parents->next; | |
2591 | } | |
2592 | ||
afe8a907 | 2593 | if (odb_parents) |
93b4405f | 2594 | graph_report(_("commit-graph parent list for commit %s terminates early"), |
53614b13 | 2595 | oid_to_hex(&cur_oid)); |
1373e547 | 2596 | |
c49c82aa | 2597 | if (!commit_graph_generation(graph_commit)) { |
1373e547 | 2598 | if (generation_zero == GENERATION_NUMBER_EXISTS) |
93b4405f | 2599 | graph_report(_("commit-graph has generation number zero for commit %s, but non-zero elsewhere"), |
1373e547 DS |
2600 | oid_to_hex(&cur_oid)); |
2601 | generation_zero = GENERATION_ZERO_EXISTS; | |
2602 | } else if (generation_zero == GENERATION_ZERO_EXISTS) | |
93b4405f | 2603 | graph_report(_("commit-graph has non-zero generation number for commit %s, but zero elsewhere"), |
1373e547 DS |
2604 | oid_to_hex(&cur_oid)); |
2605 | ||
2606 | if (generation_zero == GENERATION_ZERO_EXISTS) | |
2607 | continue; | |
2608 | ||
2609 | /* | |
e8b63005 AK |
2610 | * If we are using topological level and one of our parents has |
2611 | * generation GENERATION_NUMBER_V1_MAX, then our generation is | |
2612 | * also GENERATION_NUMBER_V1_MAX. Decrement to avoid extra logic | |
2613 | * in the following condition. | |
1373e547 | 2614 | */ |
1fdc383c | 2615 | if (!g->read_generation_data && max_generation == GENERATION_NUMBER_V1_MAX) |
1373e547 DS |
2616 | max_generation--; |
2617 | ||
c752ad09 | 2618 | generation = commit_graph_generation(graph_commit); |
e8b63005 AK |
2619 | if (generation < max_generation + 1) |
2620 | graph_report(_("commit-graph generation for commit %s is %"PRItime" < %"PRItime), | |
1373e547 | 2621 | oid_to_hex(&cur_oid), |
c752ad09 | 2622 | generation, |
1373e547 | 2623 | max_generation + 1); |
88968ebf DS |
2624 | |
2625 | if (graph_commit->date != odb_commit->date) | |
93b4405f | 2626 | graph_report(_("commit date for commit %s in commit-graph is %"PRItime" != %"PRItime), |
88968ebf DS |
2627 | oid_to_hex(&cur_oid), |
2628 | graph_commit->date, | |
2629 | odb_commit->date); | |
96af91d4 | 2630 | } |
1f7f557f | 2631 | stop_progress(&progress); |
96af91d4 | 2632 | |
3da4b609 DS |
2633 | local_error = verify_commit_graph_error; |
2634 | ||
2635 | if (!(flags & COMMIT_GRAPH_VERIFY_SHALLOW) && g->base_graph) | |
2636 | local_error |= verify_commit_graph(r, g->base_graph, flags); | |
2637 | ||
2638 | return local_error; | |
283e68c7 | 2639 | } |
c3756d5b JT |
2640 | |
2641 | void free_commit_graph(struct commit_graph *g) | |
2642 | { | |
2643 | if (!g) | |
2644 | return; | |
c8828530 | 2645 | if (g->data) { |
c3756d5b JT |
2646 | munmap((void *)g->data, g->data_len); |
2647 | g->data = NULL; | |
c3756d5b | 2648 | } |
6c622f9f | 2649 | free(g->filename); |
76ffbca7 | 2650 | free(g->bloom_filter_settings); |
c3756d5b JT |
2651 | free(g); |
2652 | } | |
6abada18 JK |
2653 | |
2654 | void disable_commit_graph(struct repository *r) | |
2655 | { | |
2656 | r->commit_graph_disabled = 1; | |
2657 | } |