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Commit | Line | Data |
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b6fdc44c | 1 | #include "git-compat-util.h" |
fa796530 | 2 | #include "config.h" |
f394e093 | 3 | #include "gettext.h" |
41771fa4 | 4 | #include "hex.h" |
08fd81c9 DS |
5 | #include "lockfile.h" |
6 | #include "pack.h" | |
7 | #include "packfile.h" | |
8 | #include "commit.h" | |
9 | #include "object.h" | |
59fb8770 | 10 | #include "refs.h" |
08fd81c9 | 11 | #include "revision.h" |
bc626927 | 12 | #include "hash-lookup.h" |
08fd81c9 | 13 | #include "commit-graph.h" |
87bed179 | 14 | #include "object-file.h" |
b10edb2d | 15 | #include "object-store.h" |
6f2d7430 | 16 | #include "oid-array.h" |
96af91d4 | 17 | #include "alloc.h" |
d6538246 DS |
18 | #include "hashmap.h" |
19 | #include "replace-object.h" | |
7b0f2292 | 20 | #include "progress.h" |
f97b9325 | 21 | #include "bloom.h" |
d21ee7d1 | 22 | #include "commit-slab.h" |
120ad2b0 | 23 | #include "shallow.h" |
0087a87b DS |
24 | #include "json-writer.h" |
25 | #include "trace2.h" | |
d4a4f929 | 26 | #include "tree.h" |
47410aa8 | 27 | #include "chunk-format.h" |
d5ebb50d | 28 | #include "wrapper.h" |
08fd81c9 | 29 | |
b23ea979 DS |
30 | void git_test_write_commit_graph_or_die(void) |
31 | { | |
32 | int flags = 0; | |
33 | if (!git_env_bool(GIT_TEST_COMMIT_GRAPH, 0)) | |
34 | return; | |
35 | ||
36 | if (git_env_bool(GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS, 0)) | |
37 | flags = COMMIT_GRAPH_WRITE_BLOOM_FILTERS; | |
38 | ||
39 | if (write_commit_graph_reachable(the_repository->objects->odb, | |
40 | flags, NULL)) | |
41 | die("failed to write commit-graph under GIT_TEST_COMMIT_GRAPH"); | |
42 | } | |
43 | ||
08fd81c9 DS |
44 | #define GRAPH_SIGNATURE 0x43475048 /* "CGPH" */ |
45 | #define GRAPH_CHUNKID_OIDFANOUT 0x4f494446 /* "OIDF" */ | |
46 | #define GRAPH_CHUNKID_OIDLOOKUP 0x4f49444c /* "OIDL" */ | |
47 | #define GRAPH_CHUNKID_DATA 0x43444154 /* "CDAT" */ | |
6dbf4b81 DS |
48 | #define GRAPH_CHUNKID_GENERATION_DATA 0x47444132 /* "GDA2" */ |
49 | #define GRAPH_CHUNKID_GENERATION_DATA_OVERFLOW 0x47444f32 /* "GDO2" */ | |
5af7417b | 50 | #define GRAPH_CHUNKID_EXTRAEDGES 0x45444745 /* "EDGE" */ |
76ffbca7 GS |
51 | #define GRAPH_CHUNKID_BLOOMINDEXES 0x42494458 /* "BIDX" */ |
52 | #define GRAPH_CHUNKID_BLOOMDATA 0x42444154 /* "BDAT" */ | |
118bd570 | 53 | #define GRAPH_CHUNKID_BASE 0x42415345 /* "BASE" */ |
08fd81c9 | 54 | |
c1665998 | 55 | #define GRAPH_DATA_WIDTH (the_hash_algo->rawsz + 16) |
08fd81c9 DS |
56 | |
57 | #define GRAPH_VERSION_1 0x1 | |
58 | #define GRAPH_VERSION GRAPH_VERSION_1 | |
59 | ||
5af7417b | 60 | #define GRAPH_EXTRA_EDGES_NEEDED 0x80000000 |
08fd81c9 DS |
61 | #define GRAPH_EDGE_LAST_MASK 0x7fffffff |
62 | #define GRAPH_PARENT_NONE 0x70000000 | |
63 | ||
64 | #define GRAPH_LAST_EDGE 0x80000000 | |
65 | ||
0e3b97cc | 66 | #define GRAPH_HEADER_SIZE 8 |
08fd81c9 | 67 | #define GRAPH_FANOUT_SIZE (4 * 256) |
2692c2f6 | 68 | #define GRAPH_MIN_SIZE (GRAPH_HEADER_SIZE + 4 * CHUNK_TOC_ENTRY_SIZE \ |
c1665998 | 69 | + GRAPH_FANOUT_SIZE + the_hash_algo->rawsz) |
08fd81c9 | 70 | |
e8b63005 AK |
71 | #define CORRECTED_COMMIT_DATE_OFFSET_OVERFLOW (1ULL << 31) |
72 | ||
cb99a34e DS |
73 | /* Remember to update object flag allocation in object.h */ |
74 | #define REACHABLE (1u<<15) | |
75 | ||
72a2bfca AK |
76 | define_commit_slab(topo_level_slab, uint32_t); |
77 | ||
d21ee7d1 JK |
78 | /* Keep track of the order in which commits are added to our list. */ |
79 | define_commit_slab(commit_pos, int); | |
80 | static struct commit_pos commit_pos = COMMIT_SLAB_INIT(1, commit_pos); | |
81 | ||
82 | static void set_commit_pos(struct repository *r, const struct object_id *oid) | |
83 | { | |
84 | static int32_t max_pos; | |
85 | struct commit *commit = lookup_commit(r, oid); | |
86 | ||
87 | if (!commit) | |
88 | return; /* should never happen, but be lenient */ | |
89 | ||
90 | *commit_pos_at(&commit_pos, commit) = max_pos++; | |
91 | } | |
92 | ||
93 | static int commit_pos_cmp(const void *va, const void *vb) | |
08fd81c9 | 94 | { |
d21ee7d1 JK |
95 | const struct commit *a = *(const struct commit **)va; |
96 | const struct commit *b = *(const struct commit **)vb; | |
97 | return commit_pos_at(&commit_pos, a) - | |
98 | commit_pos_at(&commit_pos, b); | |
99 | } | |
100 | ||
4844812b AK |
101 | define_commit_slab(commit_graph_data_slab, struct commit_graph_data); |
102 | static struct commit_graph_data_slab commit_graph_data_slab = | |
103 | COMMIT_SLAB_INIT(1, commit_graph_data_slab); | |
104 | ||
702110aa DS |
105 | static int get_configured_generation_version(struct repository *r) |
106 | { | |
107 | int version = 2; | |
108 | repo_config_get_int(r, "commitgraph.generationversion", &version); | |
109 | return version; | |
110 | } | |
111 | ||
4844812b AK |
112 | uint32_t commit_graph_position(const struct commit *c) |
113 | { | |
114 | struct commit_graph_data *data = | |
115 | commit_graph_data_slab_peek(&commit_graph_data_slab, c); | |
116 | ||
117 | return data ? data->graph_pos : COMMIT_NOT_FROM_GRAPH; | |
118 | } | |
119 | ||
d7f92784 | 120 | timestamp_t commit_graph_generation(const struct commit *c) |
4844812b AK |
121 | { |
122 | struct commit_graph_data *data = | |
123 | commit_graph_data_slab_peek(&commit_graph_data_slab, c); | |
124 | ||
2ee11f72 DS |
125 | if (data && data->generation) |
126 | return data->generation; | |
4844812b | 127 | |
2ee11f72 | 128 | return GENERATION_NUMBER_INFINITY; |
4844812b AK |
129 | } |
130 | ||
131 | static struct commit_graph_data *commit_graph_data_at(const struct commit *c) | |
132 | { | |
133 | unsigned int i, nth_slab; | |
134 | struct commit_graph_data *data = | |
135 | commit_graph_data_slab_peek(&commit_graph_data_slab, c); | |
136 | ||
137 | if (data) | |
138 | return data; | |
139 | ||
140 | nth_slab = c->index / commit_graph_data_slab.slab_size; | |
141 | data = commit_graph_data_slab_at(&commit_graph_data_slab, c); | |
142 | ||
143 | /* | |
144 | * commit-slab initializes elements with zero, overwrite this with | |
145 | * COMMIT_NOT_FROM_GRAPH for graph_pos. | |
146 | * | |
147 | * We avoid initializing generation with checking if graph position | |
148 | * is not COMMIT_NOT_FROM_GRAPH. | |
149 | */ | |
150 | for (i = 0; i < commit_graph_data_slab.slab_size; i++) { | |
151 | commit_graph_data_slab.slab[nth_slab][i].graph_pos = | |
152 | COMMIT_NOT_FROM_GRAPH; | |
153 | } | |
154 | ||
155 | return data; | |
156 | } | |
157 | ||
e30c5ee7 AK |
158 | /* |
159 | * Should be used only while writing commit-graph as it compares | |
160 | * generation value of commits by directly accessing commit-slab. | |
161 | */ | |
3d112755 GS |
162 | static int commit_gen_cmp(const void *va, const void *vb) |
163 | { | |
164 | const struct commit *a = *(const struct commit **)va; | |
165 | const struct commit *b = *(const struct commit **)vb; | |
166 | ||
d7f92784 AK |
167 | const timestamp_t generation_a = commit_graph_data_at(a)->generation; |
168 | const timestamp_t generation_b = commit_graph_data_at(b)->generation; | |
3d112755 | 169 | /* lower generation commits first */ |
c752ad09 | 170 | if (generation_a < generation_b) |
3d112755 | 171 | return -1; |
c752ad09 | 172 | else if (generation_a > generation_b) |
3d112755 GS |
173 | return 1; |
174 | ||
175 | /* use date as a heuristic when generations are equal */ | |
176 | if (a->date < b->date) | |
177 | return -1; | |
178 | else if (a->date > b->date) | |
179 | return 1; | |
180 | return 0; | |
181 | } | |
182 | ||
d21ee7d1 | 183 | char *get_commit_graph_filename(struct object_directory *obj_dir) |
08fd81c9 | 184 | { |
d21ee7d1 | 185 | return xstrfmt("%s/info/commit-graph", obj_dir->path); |
08fd81c9 DS |
186 | } |
187 | ||
ad2dd5bb | 188 | static char *get_split_graph_filename(struct object_directory *odb, |
5c84b339 DS |
189 | const char *oid_hex) |
190 | { | |
ad2dd5bb TB |
191 | return xstrfmt("%s/info/commit-graphs/graph-%s.graph", odb->path, |
192 | oid_hex); | |
5c84b339 DS |
193 | } |
194 | ||
663b2b1b | 195 | char *get_commit_graph_chain_filename(struct object_directory *odb) |
5c84b339 | 196 | { |
ad2dd5bb | 197 | return xstrfmt("%s/info/commit-graphs/commit-graph-chain", odb->path); |
08fd81c9 DS |
198 | } |
199 | ||
2a2e32bd DS |
200 | static struct commit_graph *alloc_commit_graph(void) |
201 | { | |
202 | struct commit_graph *g = xcalloc(1, sizeof(*g)); | |
2a2e32bd DS |
203 | |
204 | return g; | |
205 | } | |
206 | ||
d6538246 DS |
207 | static int commit_graph_compatible(struct repository *r) |
208 | { | |
5cef295f DS |
209 | if (!r->gitdir) |
210 | return 0; | |
211 | ||
f1178380 | 212 | if (replace_refs_enabled(r)) { |
d6538246 | 213 | prepare_replace_object(r); |
cdc986a7 | 214 | if (hashmap_get_size(&r->objects->replace_map->map)) |
d6538246 DS |
215 | return 0; |
216 | } | |
217 | ||
20fd6d57 | 218 | prepare_commit_graft(r); |
ce16364e | 219 | if (r->parsed_objects && |
cdc986a7 | 220 | (r->parsed_objects->grafts_nr || r->parsed_objects->substituted_parent)) |
20fd6d57 | 221 | return 0; |
cdc986a7 | 222 | if (is_repository_shallow(r)) |
20fd6d57 DS |
223 | return 0; |
224 | ||
d6538246 DS |
225 | return 1; |
226 | } | |
227 | ||
61df89c8 ÆAB |
228 | int open_commit_graph(const char *graph_file, int *fd, struct stat *st) |
229 | { | |
230 | *fd = git_open(graph_file); | |
231 | if (*fd < 0) | |
232 | return 0; | |
233 | if (fstat(*fd, st)) { | |
234 | close(*fd); | |
235 | return 0; | |
236 | } | |
237 | return 1; | |
238 | } | |
239 | ||
ab14d067 TB |
240 | struct commit_graph *load_commit_graph_one_fd_st(struct repository *r, |
241 | int fd, struct stat *st, | |
a7df60ca | 242 | struct object_directory *odb) |
2a2e32bd DS |
243 | { |
244 | void *graph_map; | |
2a2e32bd | 245 | size_t graph_size; |
aa658574 | 246 | struct commit_graph *ret; |
2a2e32bd | 247 | |
61df89c8 | 248 | graph_size = xsize_t(st->st_size); |
2a2e32bd DS |
249 | |
250 | if (graph_size < GRAPH_MIN_SIZE) { | |
251 | close(fd); | |
67a530fa | 252 | error(_("commit-graph file is too small")); |
61df89c8 | 253 | return NULL; |
2a2e32bd DS |
254 | } |
255 | graph_map = xmmap(NULL, graph_size, PROT_READ, MAP_PRIVATE, fd, 0); | |
c8828530 | 256 | close(fd); |
a92d8523 TB |
257 | prepare_repo_settings(r); |
258 | ret = parse_commit_graph(&r->settings, graph_map, graph_size); | |
aa658574 | 259 | |
a7df60ca TB |
260 | if (ret) |
261 | ret->odb = odb; | |
c8828530 | 262 | else |
aa658574 | 263 | munmap(graph_map, graph_size); |
aa658574 JS |
264 | |
265 | return ret; | |
266 | } | |
267 | ||
2ac138d5 ÆAB |
268 | static int verify_commit_graph_lite(struct commit_graph *g) |
269 | { | |
270 | /* | |
271 | * Basic validation shared between parse_commit_graph() | |
272 | * which'll be called every time the graph is used, and the | |
273 | * much more expensive verify_commit_graph() used by | |
274 | * "commit-graph verify". | |
275 | * | |
276 | * There should only be very basic checks here to ensure that | |
277 | * we don't e.g. segfault in fill_commit_in_graph(), but | |
278 | * because this is a very hot codepath nothing that e.g. loops | |
279 | * over g->num_commits, or runs a checksum on the commit-graph | |
280 | * itself. | |
281 | */ | |
282 | if (!g->chunk_oid_fanout) { | |
283 | error("commit-graph is missing the OID Fanout chunk"); | |
284 | return 1; | |
285 | } | |
286 | if (!g->chunk_oid_lookup) { | |
287 | error("commit-graph is missing the OID Lookup chunk"); | |
288 | return 1; | |
289 | } | |
290 | if (!g->chunk_commit_data) { | |
291 | error("commit-graph is missing the Commit Data chunk"); | |
292 | return 1; | |
293 | } | |
294 | ||
295 | return 0; | |
296 | } | |
297 | ||
2692c2f6 DS |
298 | static int graph_read_oid_lookup(const unsigned char *chunk_start, |
299 | size_t chunk_size, void *data) | |
300 | { | |
301 | struct commit_graph *g = data; | |
302 | g->chunk_oid_lookup = chunk_start; | |
303 | g->num_commits = chunk_size / g->hash_len; | |
304 | return 0; | |
305 | } | |
306 | ||
307 | static int graph_read_bloom_data(const unsigned char *chunk_start, | |
308 | size_t chunk_size, void *data) | |
309 | { | |
310 | struct commit_graph *g = data; | |
311 | uint32_t hash_version; | |
312 | g->chunk_bloom_data = chunk_start; | |
313 | hash_version = get_be32(chunk_start); | |
314 | ||
315 | if (hash_version != 1) | |
316 | return 0; | |
317 | ||
318 | g->bloom_filter_settings = xmalloc(sizeof(struct bloom_filter_settings)); | |
319 | g->bloom_filter_settings->hash_version = hash_version; | |
320 | g->bloom_filter_settings->num_hashes = get_be32(chunk_start + 4); | |
321 | g->bloom_filter_settings->bits_per_entry = get_be32(chunk_start + 8); | |
322 | g->bloom_filter_settings->max_changed_paths = DEFAULT_BLOOM_MAX_CHANGES; | |
323 | ||
324 | return 0; | |
325 | } | |
326 | ||
a92d8523 | 327 | struct commit_graph *parse_commit_graph(struct repo_settings *s, |
ab14d067 | 328 | void *graph_map, size_t graph_size) |
aa658574 | 329 | { |
2692c2f6 | 330 | const unsigned char *data; |
aa658574 | 331 | struct commit_graph *graph; |
aa658574 JS |
332 | uint32_t graph_signature; |
333 | unsigned char graph_version, hash_version; | |
2692c2f6 | 334 | struct chunkfile *cf = NULL; |
aa658574 JS |
335 | |
336 | if (!graph_map) | |
337 | return NULL; | |
338 | ||
339 | if (graph_size < GRAPH_MIN_SIZE) | |
340 | return NULL; | |
341 | ||
2a2e32bd DS |
342 | data = (const unsigned char *)graph_map; |
343 | ||
344 | graph_signature = get_be32(data); | |
345 | if (graph_signature != GRAPH_SIGNATURE) { | |
93b4405f | 346 | error(_("commit-graph signature %X does not match signature %X"), |
2a2e32bd | 347 | graph_signature, GRAPH_SIGNATURE); |
aa658574 | 348 | return NULL; |
2a2e32bd DS |
349 | } |
350 | ||
351 | graph_version = *(unsigned char*)(data + 4); | |
352 | if (graph_version != GRAPH_VERSION) { | |
93b4405f | 353 | error(_("commit-graph version %X does not match version %X"), |
2a2e32bd | 354 | graph_version, GRAPH_VERSION); |
aa658574 | 355 | return NULL; |
2a2e32bd DS |
356 | } |
357 | ||
358 | hash_version = *(unsigned char*)(data + 5); | |
d9fef9d9 | 359 | if (hash_version != oid_version(the_hash_algo)) { |
93b4405f | 360 | error(_("commit-graph hash version %X does not match version %X"), |
d9fef9d9 | 361 | hash_version, oid_version(the_hash_algo)); |
aa658574 | 362 | return NULL; |
2a2e32bd DS |
363 | } |
364 | ||
365 | graph = alloc_commit_graph(); | |
366 | ||
c1665998 | 367 | graph->hash_len = the_hash_algo->rawsz; |
2a2e32bd | 368 | graph->num_chunks = *(unsigned char*)(data + 6); |
2a2e32bd DS |
369 | graph->data = graph_map; |
370 | graph->data_len = graph_size; | |
371 | ||
2ad4f1a7 | 372 | if (graph_size < GRAPH_HEADER_SIZE + |
2692c2f6 | 373 | (graph->num_chunks + 1) * CHUNK_TOC_ENTRY_SIZE + |
2ad4f1a7 SG |
374 | GRAPH_FANOUT_SIZE + the_hash_algo->rawsz) { |
375 | error(_("commit-graph file is too small to hold %u chunks"), | |
376 | graph->num_chunks); | |
377 | free(graph); | |
378 | return NULL; | |
379 | } | |
380 | ||
2692c2f6 | 381 | cf = init_chunkfile(NULL); |
118bd570 | 382 | |
2692c2f6 DS |
383 | if (read_table_of_contents(cf, graph->data, graph_size, |
384 | GRAPH_HEADER_SIZE, graph->num_chunks)) | |
385 | goto free_and_return; | |
2a2e32bd | 386 | |
2692c2f6 DS |
387 | pair_chunk(cf, GRAPH_CHUNKID_OIDFANOUT, |
388 | (const unsigned char **)&graph->chunk_oid_fanout); | |
389 | read_chunk(cf, GRAPH_CHUNKID_OIDLOOKUP, graph_read_oid_lookup, graph); | |
390 | pair_chunk(cf, GRAPH_CHUNKID_DATA, &graph->chunk_commit_data); | |
391 | pair_chunk(cf, GRAPH_CHUNKID_EXTRAEDGES, &graph->chunk_extra_edges); | |
392 | pair_chunk(cf, GRAPH_CHUNKID_BASE, &graph->chunk_base_graphs); | |
702110aa | 393 | |
a92d8523 | 394 | if (s->commit_graph_generation_version >= 2) { |
702110aa DS |
395 | pair_chunk(cf, GRAPH_CHUNKID_GENERATION_DATA, |
396 | &graph->chunk_generation_data); | |
397 | pair_chunk(cf, GRAPH_CHUNKID_GENERATION_DATA_OVERFLOW, | |
398 | &graph->chunk_generation_data_overflow); | |
3b0199d4 DS |
399 | |
400 | if (graph->chunk_generation_data) | |
401 | graph->read_generation_data = 1; | |
702110aa | 402 | } |
2692c2f6 | 403 | |
a92d8523 | 404 | if (s->commit_graph_read_changed_paths) { |
2692c2f6 DS |
405 | pair_chunk(cf, GRAPH_CHUNKID_BLOOMINDEXES, |
406 | &graph->chunk_bloom_indexes); | |
407 | read_chunk(cf, GRAPH_CHUNKID_BLOOMDATA, | |
408 | graph_read_bloom_data, graph); | |
2a2e32bd DS |
409 | } |
410 | ||
76ffbca7 GS |
411 | if (graph->chunk_bloom_indexes && graph->chunk_bloom_data) { |
412 | init_bloom_filters(); | |
413 | } else { | |
414 | /* We need both the bloom chunks to exist together. Else ignore the data */ | |
415 | graph->chunk_bloom_indexes = NULL; | |
416 | graph->chunk_bloom_data = NULL; | |
fbda77c6 | 417 | FREE_AND_NULL(graph->bloom_filter_settings); |
76ffbca7 GS |
418 | } |
419 | ||
92e2cab9 | 420 | oidread(&graph->oid, graph->data + graph->data_len - graph->hash_len); |
118bd570 | 421 | |
fbda77c6 JT |
422 | if (verify_commit_graph_lite(graph)) |
423 | goto free_and_return; | |
2ac138d5 | 424 | |
2692c2f6 | 425 | free_chunkfile(cf); |
2a2e32bd | 426 | return graph; |
fbda77c6 JT |
427 | |
428 | free_and_return: | |
2692c2f6 | 429 | free_chunkfile(cf); |
fbda77c6 JT |
430 | free(graph->bloom_filter_settings); |
431 | free(graph); | |
432 | return NULL; | |
2a2e32bd DS |
433 | } |
434 | ||
ab14d067 TB |
435 | static struct commit_graph *load_commit_graph_one(struct repository *r, |
436 | const char *graph_file, | |
a7df60ca | 437 | struct object_directory *odb) |
61df89c8 ÆAB |
438 | { |
439 | ||
440 | struct stat st; | |
441 | int fd; | |
6c622f9f | 442 | struct commit_graph *g; |
61df89c8 ÆAB |
443 | int open_ok = open_commit_graph(graph_file, &fd, &st); |
444 | ||
445 | if (!open_ok) | |
446 | return NULL; | |
447 | ||
ab14d067 | 448 | g = load_commit_graph_one_fd_st(r, fd, &st, odb); |
6c622f9f DS |
449 | |
450 | if (g) | |
451 | g->filename = xstrdup(graph_file); | |
452 | ||
453 | return g; | |
61df89c8 ÆAB |
454 | } |
455 | ||
13c24992 TB |
456 | static struct commit_graph *load_commit_graph_v1(struct repository *r, |
457 | struct object_directory *odb) | |
5c84b339 | 458 | { |
ad2dd5bb | 459 | char *graph_name = get_commit_graph_filename(odb); |
ab14d067 | 460 | struct commit_graph *g = load_commit_graph_one(r, graph_name, odb); |
5c84b339 DS |
461 | free(graph_name); |
462 | ||
463 | return g; | |
464 | } | |
465 | ||
466 | static int add_graph_to_chain(struct commit_graph *g, | |
467 | struct commit_graph *chain, | |
468 | struct object_id *oids, | |
469 | int n) | |
470 | { | |
471 | struct commit_graph *cur_g = chain; | |
472 | ||
118bd570 DS |
473 | if (n && !g->chunk_base_graphs) { |
474 | warning(_("commit-graph has no base graphs chunk")); | |
475 | return 0; | |
476 | } | |
477 | ||
5c84b339 DS |
478 | while (n) { |
479 | n--; | |
118bd570 DS |
480 | |
481 | if (!cur_g || | |
482 | !oideq(&oids[n], &cur_g->oid) || | |
483 | !hasheq(oids[n].hash, g->chunk_base_graphs + g->hash_len * n)) { | |
484 | warning(_("commit-graph chain does not match")); | |
485 | return 0; | |
486 | } | |
487 | ||
5c84b339 DS |
488 | cur_g = cur_g->base_graph; |
489 | } | |
490 | ||
491 | g->base_graph = chain; | |
492 | ||
493 | if (chain) | |
494 | g->num_commits_in_base = chain->num_commits + chain->num_commits_in_base; | |
495 | ||
496 | return 1; | |
497 | } | |
498 | ||
13c24992 TB |
499 | static struct commit_graph *load_commit_graph_chain(struct repository *r, |
500 | struct object_directory *odb) | |
5c84b339 DS |
501 | { |
502 | struct commit_graph *graph_chain = NULL; | |
503 | struct strbuf line = STRBUF_INIT; | |
504 | struct stat st; | |
505 | struct object_id *oids; | |
506 | int i = 0, valid = 1, count; | |
663b2b1b | 507 | char *chain_name = get_commit_graph_chain_filename(odb); |
5c84b339 DS |
508 | FILE *fp; |
509 | int stat_res; | |
510 | ||
511 | fp = fopen(chain_name, "r"); | |
512 | stat_res = stat(chain_name, &st); | |
513 | free(chain_name); | |
514 | ||
c0befa0c | 515 | if (!fp) |
5c84b339 | 516 | return NULL; |
c0befa0c KT |
517 | if (stat_res || |
518 | st.st_size <= the_hash_algo->hexsz) { | |
519 | fclose(fp); | |
520 | return NULL; | |
521 | } | |
5c84b339 DS |
522 | |
523 | count = st.st_size / (the_hash_algo->hexsz + 1); | |
ca56dadb | 524 | CALLOC_ARRAY(oids, count); |
5c84b339 | 525 | |
c523035c DS |
526 | prepare_alt_odb(r); |
527 | ||
528 | for (i = 0; i < count; i++) { | |
529 | struct object_directory *odb; | |
5c84b339 DS |
530 | |
531 | if (strbuf_getline_lf(&line, fp) == EOF) | |
532 | break; | |
533 | ||
534 | if (get_oid_hex(line.buf, &oids[i])) { | |
535 | warning(_("invalid commit-graph chain: line '%s' not a hash"), | |
536 | line.buf); | |
537 | valid = 0; | |
538 | break; | |
539 | } | |
540 | ||
c523035c DS |
541 | valid = 0; |
542 | for (odb = r->objects->odb; odb; odb = odb->next) { | |
ad2dd5bb | 543 | char *graph_name = get_split_graph_filename(odb, line.buf); |
ab14d067 | 544 | struct commit_graph *g = load_commit_graph_one(r, graph_name, odb); |
5c84b339 | 545 | |
c523035c DS |
546 | free(graph_name); |
547 | ||
548 | if (g) { | |
c523035c DS |
549 | if (add_graph_to_chain(g, graph_chain, oids, i)) { |
550 | graph_chain = g; | |
551 | valid = 1; | |
552 | } | |
553 | ||
554 | break; | |
555 | } | |
556 | } | |
557 | ||
558 | if (!valid) { | |
559 | warning(_("unable to find all commit-graph files")); | |
560 | break; | |
561 | } | |
5c84b339 DS |
562 | } |
563 | ||
564 | free(oids); | |
565 | fclose(fp); | |
0aa6bce7 | 566 | strbuf_release(&line); |
5c84b339 DS |
567 | |
568 | return graph_chain; | |
569 | } | |
570 | ||
448a39e6 DS |
571 | /* |
572 | * returns 1 if and only if all graphs in the chain have | |
573 | * corrected commit dates stored in the generation_data chunk. | |
574 | */ | |
575 | static int validate_mixed_generation_chain(struct commit_graph *g) | |
1fdc383c | 576 | { |
448a39e6 DS |
577 | int read_generation_data = 1; |
578 | struct commit_graph *p = g; | |
1fdc383c | 579 | |
448a39e6 DS |
580 | while (read_generation_data && p) { |
581 | read_generation_data = p->read_generation_data; | |
582 | p = p->base_graph; | |
583 | } | |
1fdc383c | 584 | |
448a39e6 DS |
585 | if (read_generation_data) |
586 | return 1; | |
1fdc383c AK |
587 | |
588 | while (g) { | |
448a39e6 | 589 | g->read_generation_data = 0; |
1fdc383c AK |
590 | g = g->base_graph; |
591 | } | |
448a39e6 DS |
592 | |
593 | return 0; | |
1fdc383c AK |
594 | } |
595 | ||
13c24992 TB |
596 | struct commit_graph *read_commit_graph_one(struct repository *r, |
597 | struct object_directory *odb) | |
5c84b339 | 598 | { |
13c24992 | 599 | struct commit_graph *g = load_commit_graph_v1(r, odb); |
5c84b339 DS |
600 | |
601 | if (!g) | |
13c24992 | 602 | g = load_commit_graph_chain(r, odb); |
5c84b339 | 603 | |
1fdc383c AK |
604 | validate_mixed_generation_chain(g); |
605 | ||
5c84b339 | 606 | return g; |
61df89c8 ÆAB |
607 | } |
608 | ||
13c24992 TB |
609 | static void prepare_commit_graph_one(struct repository *r, |
610 | struct object_directory *odb) | |
177722b3 | 611 | { |
177722b3 | 612 | |
dade47c0 | 613 | if (r->objects->commit_graph) |
177722b3 DS |
614 | return; |
615 | ||
13c24992 | 616 | r->objects->commit_graph = read_commit_graph_one(r, odb); |
177722b3 DS |
617 | } |
618 | ||
5faf357b JT |
619 | /* |
620 | * Return 1 if commit_graph is non-NULL, and 0 otherwise. | |
621 | * | |
15beaaa3 | 622 | * On the first invocation, this function attempts to load the commit |
5faf357b JT |
623 | * graph if the_repository is configured to have one. |
624 | */ | |
dade47c0 | 625 | static int prepare_commit_graph(struct repository *r) |
177722b3 | 626 | { |
263db403 | 627 | struct object_directory *odb; |
dade47c0 | 628 | |
6abada18 | 629 | /* |
0803f9c7 LD |
630 | * Early return if there is no git dir or if the commit graph is |
631 | * disabled. | |
632 | * | |
6abada18 JK |
633 | * This must come before the "already attempted?" check below, because |
634 | * we want to disable even an already-loaded graph file. | |
635 | */ | |
0803f9c7 | 636 | if (!r->gitdir || r->commit_graph_disabled) |
6abada18 | 637 | return 0; |
43d35618 | 638 | |
dade47c0 JT |
639 | if (r->objects->commit_graph_attempted) |
640 | return !!r->objects->commit_graph; | |
641 | r->objects->commit_graph_attempted = 1; | |
642 | ||
7211b9e7 DS |
643 | prepare_repo_settings(r); |
644 | ||
859fdc0c | 645 | if (!git_env_bool(GIT_TEST_COMMIT_GRAPH, 0) && |
7211b9e7 | 646 | r->settings.core_commit_graph != 1) |
dade47c0 JT |
647 | /* |
648 | * This repository is not configured to use commit graphs, so | |
649 | * do not load one. (But report commit_graph_attempted anyway | |
650 | * so that commit graph loading is not attempted again for this | |
651 | * repository.) | |
652 | */ | |
5faf357b JT |
653 | return 0; |
654 | ||
d6538246 DS |
655 | if (!commit_graph_compatible(r)) |
656 | return 0; | |
657 | ||
dade47c0 | 658 | prepare_alt_odb(r); |
f0eaf638 | 659 | for (odb = r->objects->odb; |
263db403 JK |
660 | !r->objects->commit_graph && odb; |
661 | odb = odb->next) | |
13c24992 | 662 | prepare_commit_graph_one(r, odb); |
dade47c0 | 663 | return !!r->objects->commit_graph; |
177722b3 DS |
664 | } |
665 | ||
6cc01743 DS |
666 | int generation_numbers_enabled(struct repository *r) |
667 | { | |
668 | uint32_t first_generation; | |
669 | struct commit_graph *g; | |
670 | if (!prepare_commit_graph(r)) | |
671 | return 0; | |
672 | ||
673 | g = r->objects->commit_graph; | |
674 | ||
675 | if (!g->num_commits) | |
676 | return 0; | |
677 | ||
678 | first_generation = get_be32(g->chunk_commit_data + | |
679 | g->hash_len + 8) >> 2; | |
680 | ||
681 | return !!first_generation; | |
682 | } | |
683 | ||
8d00d7c3 AK |
684 | int corrected_commit_dates_enabled(struct repository *r) |
685 | { | |
686 | struct commit_graph *g; | |
687 | if (!prepare_commit_graph(r)) | |
688 | return 0; | |
689 | ||
690 | g = r->objects->commit_graph; | |
691 | ||
692 | if (!g->num_commits) | |
693 | return 0; | |
694 | ||
695 | return g->read_generation_data; | |
696 | } | |
697 | ||
4f364405 TB |
698 | struct bloom_filter_settings *get_bloom_filter_settings(struct repository *r) |
699 | { | |
700 | struct commit_graph *g = r->objects->commit_graph; | |
701 | while (g) { | |
702 | if (g->bloom_filter_settings) | |
703 | return g->bloom_filter_settings; | |
704 | g = g->base_graph; | |
705 | } | |
706 | return NULL; | |
707 | } | |
708 | ||
d4f4d60f DS |
709 | static void close_commit_graph_one(struct commit_graph *g) |
710 | { | |
711 | if (!g) | |
712 | return; | |
713 | ||
957ba814 | 714 | clear_commit_graph_data_slab(&commit_graph_data_slab); |
d4f4d60f DS |
715 | close_commit_graph_one(g->base_graph); |
716 | free_commit_graph(g); | |
717 | } | |
718 | ||
c3a3a964 | 719 | void close_commit_graph(struct raw_object_store *o) |
177722b3 | 720 | { |
d4f4d60f | 721 | close_commit_graph_one(o->commit_graph); |
c3a3a964 | 722 | o->commit_graph = NULL; |
177722b3 DS |
723 | } |
724 | ||
809ea28f | 725 | static int bsearch_graph(struct commit_graph *g, const struct object_id *oid, uint32_t *pos) |
177722b3 DS |
726 | { |
727 | return bsearch_hash(oid->hash, g->chunk_oid_fanout, | |
728 | g->chunk_oid_lookup, g->hash_len, pos); | |
729 | } | |
730 | ||
d4f4d60f DS |
731 | static void load_oid_from_graph(struct commit_graph *g, |
732 | uint32_t pos, | |
733 | struct object_id *oid) | |
734 | { | |
735 | uint32_t lex_index; | |
736 | ||
737 | while (g && pos < g->num_commits_in_base) | |
738 | g = g->base_graph; | |
739 | ||
740 | if (!g) | |
741 | BUG("NULL commit-graph"); | |
742 | ||
743 | if (pos >= g->num_commits + g->num_commits_in_base) | |
744 | die(_("invalid commit position. commit-graph is likely corrupt")); | |
745 | ||
746 | lex_index = pos - g->num_commits_in_base; | |
747 | ||
92e2cab9 | 748 | oidread(oid, g->chunk_oid_lookup + g->hash_len * lex_index); |
d4f4d60f DS |
749 | } |
750 | ||
4f542b7a SB |
751 | static struct commit_list **insert_parent_or_die(struct repository *r, |
752 | struct commit_graph *g, | |
d4f4d60f | 753 | uint32_t pos, |
177722b3 DS |
754 | struct commit_list **pptr) |
755 | { | |
756 | struct commit *c; | |
757 | struct object_id oid; | |
96af91d4 | 758 | |
d4f4d60f DS |
759 | if (pos >= g->num_commits + g->num_commits_in_base) |
760 | die("invalid parent position %"PRIu32, pos); | |
53614b13 | 761 | |
d4f4d60f | 762 | load_oid_from_graph(g, pos, &oid); |
4f542b7a | 763 | c = lookup_commit(r, &oid); |
177722b3 | 764 | if (!c) |
4f5b532d | 765 | die(_("could not find commit %s"), oid_to_hex(&oid)); |
c49c82aa | 766 | commit_graph_data_at(c)->graph_pos = pos; |
177722b3 DS |
767 | return &commit_list_insert(c, pptr)->next; |
768 | } | |
769 | ||
e2838d85 DS |
770 | static void fill_commit_graph_info(struct commit *item, struct commit_graph *g, uint32_t pos) |
771 | { | |
d4f4d60f | 772 | const unsigned char *commit_data; |
c752ad09 | 773 | struct commit_graph_data *graph_data; |
e8b63005 AK |
774 | uint32_t lex_index, offset_pos; |
775 | uint64_t date_high, date_low, offset; | |
d4f4d60f DS |
776 | |
777 | while (pos < g->num_commits_in_base) | |
778 | g = g->base_graph; | |
779 | ||
f90fca63 AK |
780 | if (pos >= g->num_commits + g->num_commits_in_base) |
781 | die(_("invalid commit position. commit-graph is likely corrupt")); | |
782 | ||
d4f4d60f DS |
783 | lex_index = pos - g->num_commits_in_base; |
784 | commit_data = g->chunk_commit_data + GRAPH_DATA_WIDTH * lex_index; | |
c752ad09 AK |
785 | |
786 | graph_data = commit_graph_data_at(item); | |
787 | graph_data->graph_pos = pos; | |
f90fca63 AK |
788 | |
789 | date_high = get_be32(commit_data + g->hash_len + 8) & 0x3; | |
790 | date_low = get_be32(commit_data + g->hash_len + 12); | |
791 | item->date = (timestamp_t)((date_high << 32) | date_low); | |
792 | ||
1fdc383c | 793 | if (g->read_generation_data) { |
e8b63005 AK |
794 | offset = (timestamp_t)get_be32(g->chunk_generation_data + sizeof(uint32_t) * lex_index); |
795 | ||
796 | if (offset & CORRECTED_COMMIT_DATE_OFFSET_OVERFLOW) { | |
797 | if (!g->chunk_generation_data_overflow) | |
798 | die(_("commit-graph requires overflow generation data but has none")); | |
799 | ||
800 | offset_pos = offset ^ CORRECTED_COMMIT_DATE_OFFSET_OVERFLOW; | |
c8d67b9a | 801 | graph_data->generation = item->date + get_be64(g->chunk_generation_data_overflow + 8 * offset_pos); |
e8b63005 AK |
802 | } else |
803 | graph_data->generation = item->date + offset; | |
804 | } else | |
805 | graph_data->generation = get_be32(commit_data + g->hash_len + 8) >> 2; | |
72a2bfca AK |
806 | |
807 | if (g->topo_levels) | |
808 | *topo_level_slab_at(g->topo_levels, item) = get_be32(commit_data + g->hash_len + 8) >> 2; | |
e2838d85 DS |
809 | } |
810 | ||
a133c40b NTND |
811 | static inline void set_commit_tree(struct commit *c, struct tree *t) |
812 | { | |
813 | c->maybe_tree = t; | |
814 | } | |
815 | ||
4f542b7a SB |
816 | static int fill_commit_in_graph(struct repository *r, |
817 | struct commit *item, | |
818 | struct commit_graph *g, uint32_t pos) | |
177722b3 | 819 | { |
177722b3 DS |
820 | uint32_t edge_value; |
821 | uint32_t *parent_data_ptr; | |
177722b3 | 822 | struct commit_list **pptr; |
d4f4d60f DS |
823 | const unsigned char *commit_data; |
824 | uint32_t lex_index; | |
177722b3 | 825 | |
d4f4d60f DS |
826 | while (pos < g->num_commits_in_base) |
827 | g = g->base_graph; | |
828 | ||
f90fca63 | 829 | fill_commit_graph_info(item, g, pos); |
d4f4d60f | 830 | |
d4f4d60f | 831 | lex_index = pos - g->num_commits_in_base; |
d4f4d60f DS |
832 | commit_data = g->chunk_commit_data + (g->hash_len + 16) * lex_index; |
833 | ||
834 | item->object.parsed = 1; | |
177722b3 | 835 | |
a133c40b | 836 | set_commit_tree(item, NULL); |
177722b3 | 837 | |
177722b3 DS |
838 | pptr = &item->parents; |
839 | ||
840 | edge_value = get_be32(commit_data + g->hash_len); | |
841 | if (edge_value == GRAPH_PARENT_NONE) | |
842 | return 1; | |
4f542b7a | 843 | pptr = insert_parent_or_die(r, g, edge_value, pptr); |
177722b3 DS |
844 | |
845 | edge_value = get_be32(commit_data + g->hash_len + 4); | |
846 | if (edge_value == GRAPH_PARENT_NONE) | |
847 | return 1; | |
5af7417b | 848 | if (!(edge_value & GRAPH_EXTRA_EDGES_NEEDED)) { |
4f542b7a | 849 | pptr = insert_parent_or_die(r, g, edge_value, pptr); |
177722b3 DS |
850 | return 1; |
851 | } | |
852 | ||
5af7417b | 853 | parent_data_ptr = (uint32_t*)(g->chunk_extra_edges + |
177722b3 DS |
854 | 4 * (uint64_t)(edge_value & GRAPH_EDGE_LAST_MASK)); |
855 | do { | |
856 | edge_value = get_be32(parent_data_ptr); | |
4f542b7a | 857 | pptr = insert_parent_or_die(r, g, |
177722b3 DS |
858 | edge_value & GRAPH_EDGE_LAST_MASK, |
859 | pptr); | |
860 | parent_data_ptr++; | |
861 | } while (!(edge_value & GRAPH_LAST_EDGE)); | |
862 | ||
863 | return 1; | |
864 | } | |
865 | ||
809ea28f PS |
866 | static int search_commit_pos_in_graph(const struct object_id *id, struct commit_graph *g, uint32_t *pos) |
867 | { | |
868 | struct commit_graph *cur_g = g; | |
869 | uint32_t lex_index; | |
870 | ||
871 | while (cur_g && !bsearch_graph(cur_g, id, &lex_index)) | |
872 | cur_g = cur_g->base_graph; | |
873 | ||
874 | if (cur_g) { | |
875 | *pos = lex_index + cur_g->num_commits_in_base; | |
876 | return 1; | |
877 | } | |
878 | ||
879 | return 0; | |
880 | } | |
881 | ||
882 | static int find_commit_pos_in_graph(struct commit *item, struct commit_graph *g, uint32_t *pos) | |
e2838d85 | 883 | { |
c752ad09 AK |
884 | uint32_t graph_pos = commit_graph_position(item); |
885 | if (graph_pos != COMMIT_NOT_FROM_GRAPH) { | |
886 | *pos = graph_pos; | |
e2838d85 DS |
887 | return 1; |
888 | } else { | |
809ea28f | 889 | return search_commit_pos_in_graph(&item->object.oid, g, pos); |
e2838d85 DS |
890 | } |
891 | } | |
892 | ||
7805360b TB |
893 | int repo_find_commit_pos_in_graph(struct repository *r, struct commit *c, |
894 | uint32_t *pos) | |
895 | { | |
896 | if (!prepare_commit_graph(r)) | |
897 | return 0; | |
898 | return find_commit_pos_in_graph(c, r->objects->commit_graph, pos); | |
899 | } | |
900 | ||
f559d6d4 PS |
901 | struct commit *lookup_commit_in_graph(struct repository *repo, const struct object_id *id) |
902 | { | |
903 | struct commit *commit; | |
904 | uint32_t pos; | |
905 | ||
d6045294 | 906 | if (!prepare_commit_graph(repo)) |
f559d6d4 PS |
907 | return NULL; |
908 | if (!search_commit_pos_in_graph(id, repo->objects->commit_graph, &pos)) | |
909 | return NULL; | |
3a1ea94a | 910 | if (!has_object(repo, id, 0)) |
f559d6d4 PS |
911 | return NULL; |
912 | ||
913 | commit = lookup_commit(repo, id); | |
914 | if (!commit) | |
915 | return NULL; | |
916 | if (commit->object.parsed) | |
917 | return commit; | |
918 | ||
919 | if (!fill_commit_in_graph(repo, commit, repo->objects->commit_graph, pos)) | |
920 | return NULL; | |
921 | ||
922 | return commit; | |
923 | } | |
924 | ||
4f542b7a SB |
925 | static int parse_commit_in_graph_one(struct repository *r, |
926 | struct commit_graph *g, | |
927 | struct commit *item) | |
177722b3 | 928 | { |
e2838d85 DS |
929 | uint32_t pos; |
930 | ||
177722b3 DS |
931 | if (item->object.parsed) |
932 | return 1; | |
ee797053 | 933 | |
809ea28f | 934 | if (find_commit_pos_in_graph(item, g, &pos)) |
4f542b7a | 935 | return fill_commit_in_graph(r, item, g, pos); |
ee797053 DS |
936 | |
937 | return 0; | |
938 | } | |
939 | ||
dade47c0 | 940 | int parse_commit_in_graph(struct repository *r, struct commit *item) |
ee797053 | 941 | { |
7b671f8c DS |
942 | static int checked_env = 0; |
943 | ||
944 | if (!checked_env && | |
945 | git_env_bool(GIT_TEST_COMMIT_GRAPH_DIE_ON_PARSE, 0)) | |
946 | die("dying as requested by the '%s' variable on commit-graph parse!", | |
947 | GIT_TEST_COMMIT_GRAPH_DIE_ON_PARSE); | |
948 | checked_env = 1; | |
949 | ||
dade47c0 | 950 | if (!prepare_commit_graph(r)) |
ee797053 | 951 | return 0; |
4f542b7a | 952 | return parse_commit_in_graph_one(r, r->objects->commit_graph, item); |
177722b3 DS |
953 | } |
954 | ||
dade47c0 | 955 | void load_commit_graph_info(struct repository *r, struct commit *item) |
e2838d85 DS |
956 | { |
957 | uint32_t pos; | |
7805360b | 958 | if (repo_find_commit_pos_in_graph(r, item, &pos)) |
dade47c0 | 959 | fill_commit_graph_info(item, r->objects->commit_graph, pos); |
e2838d85 DS |
960 | } |
961 | ||
4f542b7a SB |
962 | static struct tree *load_tree_for_commit(struct repository *r, |
963 | struct commit_graph *g, | |
964 | struct commit *c) | |
7b8a21db DS |
965 | { |
966 | struct object_id oid; | |
d4f4d60f | 967 | const unsigned char *commit_data; |
c752ad09 | 968 | uint32_t graph_pos = commit_graph_position(c); |
d4f4d60f | 969 | |
c752ad09 | 970 | while (graph_pos < g->num_commits_in_base) |
d4f4d60f DS |
971 | g = g->base_graph; |
972 | ||
973 | commit_data = g->chunk_commit_data + | |
c752ad09 | 974 | GRAPH_DATA_WIDTH * (graph_pos - g->num_commits_in_base); |
7b8a21db | 975 | |
92e2cab9 | 976 | oidread(&oid, commit_data); |
a133c40b | 977 | set_commit_tree(c, lookup_tree(r, &oid)); |
7b8a21db DS |
978 | |
979 | return c->maybe_tree; | |
980 | } | |
981 | ||
4f542b7a SB |
982 | static struct tree *get_commit_tree_in_graph_one(struct repository *r, |
983 | struct commit_graph *g, | |
0cbef8f8 | 984 | const struct commit *c) |
7b8a21db DS |
985 | { |
986 | if (c->maybe_tree) | |
987 | return c->maybe_tree; | |
c49c82aa | 988 | if (commit_graph_position(c) == COMMIT_NOT_FROM_GRAPH) |
0cbef8f8 DS |
989 | BUG("get_commit_tree_in_graph_one called from non-commit-graph commit"); |
990 | ||
4f542b7a | 991 | return load_tree_for_commit(r, g, (struct commit *)c); |
0cbef8f8 | 992 | } |
7b8a21db | 993 | |
dade47c0 | 994 | struct tree *get_commit_tree_in_graph(struct repository *r, const struct commit *c) |
0cbef8f8 | 995 | { |
4f542b7a | 996 | return get_commit_tree_in_graph_one(r, r->objects->commit_graph, c); |
7b8a21db DS |
997 | } |
998 | ||
c9905bea DS |
999 | struct packed_commit_list { |
1000 | struct commit **list; | |
3361390c JK |
1001 | size_t nr; |
1002 | size_t alloc; | |
c9905bea DS |
1003 | }; |
1004 | ||
c9905bea DS |
1005 | struct write_commit_graph_context { |
1006 | struct repository *r; | |
0bd52e27 | 1007 | struct object_directory *odb; |
c9905bea | 1008 | char *graph_name; |
a5f1c448 | 1009 | struct oid_array oids; |
c9905bea DS |
1010 | struct packed_commit_list commits; |
1011 | int num_extra_edges; | |
e8b63005 | 1012 | int num_generation_data_overflows; |
c9905bea DS |
1013 | unsigned long approx_nr_objects; |
1014 | struct progress *progress; | |
1015 | int progress_done; | |
1016 | uint64_t progress_cnt; | |
6c622f9f DS |
1017 | |
1018 | char *base_graph_name; | |
1019 | int num_commit_graphs_before; | |
1020 | int num_commit_graphs_after; | |
1021 | char **commit_graph_filenames_before; | |
1022 | char **commit_graph_filenames_after; | |
1023 | char **commit_graph_hash_after; | |
1024 | uint32_t new_num_commits_in_base; | |
1025 | struct commit_graph *new_base_graph; | |
1026 | ||
c9905bea | 1027 | unsigned append:1, |
6c622f9f | 1028 | report_progress:1, |
7c5c9b9c | 1029 | split:1, |
3d112755 | 1030 | changed_paths:1, |
e8b63005 | 1031 | order_by_pack:1, |
fde55b09 DS |
1032 | write_generation_data:1, |
1033 | trust_generation_numbers:1; | |
c2bc6e6a | 1034 | |
72a2bfca | 1035 | struct topo_level_slab *topo_levels; |
98bb7961 | 1036 | const struct commit_graph_opts *opts; |
f97b9325 | 1037 | size_t total_bloom_filter_data_size; |
98037f2b | 1038 | const struct bloom_filter_settings *bloom_settings; |
312cff52 TB |
1039 | |
1040 | int count_bloom_filter_computed; | |
1041 | int count_bloom_filter_not_computed; | |
59f0d507 | 1042 | int count_bloom_filter_trunc_empty; |
312cff52 | 1043 | int count_bloom_filter_trunc_large; |
c9905bea DS |
1044 | }; |
1045 | ||
9bab081d | 1046 | static int write_graph_chunk_fanout(struct hashfile *f, |
eb907191 | 1047 | void *data) |
08fd81c9 | 1048 | { |
eb907191 | 1049 | struct write_commit_graph_context *ctx = data; |
08fd81c9 | 1050 | int i, count = 0; |
c9905bea | 1051 | struct commit **list = ctx->commits.list; |
08fd81c9 DS |
1052 | |
1053 | /* | |
1054 | * Write the first-level table (the list is sorted, | |
1055 | * but we use a 256-entry lookup to be able to avoid | |
1056 | * having to do eight extra binary search iterations). | |
1057 | */ | |
1058 | for (i = 0; i < 256; i++) { | |
c9905bea | 1059 | while (count < ctx->commits.nr) { |
08fd81c9 DS |
1060 | if ((*list)->object.oid.hash[0] != i) |
1061 | break; | |
c9905bea | 1062 | display_progress(ctx->progress, ++ctx->progress_cnt); |
08fd81c9 DS |
1063 | count++; |
1064 | list++; | |
1065 | } | |
1066 | ||
1067 | hashwrite_be32(f, count); | |
1068 | } | |
9bab081d SG |
1069 | |
1070 | return 0; | |
08fd81c9 DS |
1071 | } |
1072 | ||
9bab081d | 1073 | static int write_graph_chunk_oids(struct hashfile *f, |
eb907191 | 1074 | void *data) |
08fd81c9 | 1075 | { |
eb907191 | 1076 | struct write_commit_graph_context *ctx = data; |
c9905bea | 1077 | struct commit **list = ctx->commits.list; |
08fd81c9 | 1078 | int count; |
c9905bea DS |
1079 | for (count = 0; count < ctx->commits.nr; count++, list++) { |
1080 | display_progress(ctx->progress, ++ctx->progress_cnt); | |
9bab081d | 1081 | hashwrite(f, (*list)->object.oid.hash, the_hash_algo->rawsz); |
53035c4f | 1082 | } |
9bab081d SG |
1083 | |
1084 | return 0; | |
08fd81c9 DS |
1085 | } |
1086 | ||
8380dcd7 | 1087 | static const struct object_id *commit_to_oid(size_t index, const void *table) |
08fd81c9 | 1088 | { |
8380dcd7 | 1089 | const struct commit * const *commits = table; |
45ee13b9 | 1090 | return &commits[index]->object.oid; |
08fd81c9 DS |
1091 | } |
1092 | ||
9bab081d | 1093 | static int write_graph_chunk_data(struct hashfile *f, |
eb907191 | 1094 | void *data) |
08fd81c9 | 1095 | { |
eb907191 | 1096 | struct write_commit_graph_context *ctx = data; |
c9905bea DS |
1097 | struct commit **list = ctx->commits.list; |
1098 | struct commit **last = ctx->commits.list + ctx->commits.nr; | |
08fd81c9 DS |
1099 | uint32_t num_extra_edges = 0; |
1100 | ||
1101 | while (list < last) { | |
1102 | struct commit_list *parent; | |
806278de | 1103 | struct object_id *tree; |
08fd81c9 DS |
1104 | int edge_value; |
1105 | uint32_t packedDate[2]; | |
c9905bea | 1106 | display_progress(ctx->progress, ++ctx->progress_cnt); |
08fd81c9 | 1107 | |
c4cc0831 | 1108 | if (repo_parse_commit_no_graph(ctx->r, *list)) |
16749b8d TB |
1109 | die(_("unable to parse commit %s"), |
1110 | oid_to_hex(&(*list)->object.oid)); | |
806278de | 1111 | tree = get_commit_tree_oid(*list); |
9bab081d | 1112 | hashwrite(f, tree->hash, the_hash_algo->rawsz); |
08fd81c9 DS |
1113 | |
1114 | parent = (*list)->parents; | |
1115 | ||
1116 | if (!parent) | |
1117 | edge_value = GRAPH_PARENT_NONE; | |
1118 | else { | |
45ee13b9 JK |
1119 | edge_value = oid_pos(&parent->item->object.oid, |
1120 | ctx->commits.list, | |
1121 | ctx->commits.nr, | |
1122 | commit_to_oid); | |
08fd81c9 | 1123 | |
6c622f9f DS |
1124 | if (edge_value >= 0) |
1125 | edge_value += ctx->new_num_commits_in_base; | |
8a6ac287 | 1126 | else if (ctx->new_base_graph) { |
6c622f9f | 1127 | uint32_t pos; |
809ea28f PS |
1128 | if (find_commit_pos_in_graph(parent->item, |
1129 | ctx->new_base_graph, | |
1130 | &pos)) | |
6c622f9f DS |
1131 | edge_value = pos; |
1132 | } | |
1133 | ||
08fd81c9 | 1134 | if (edge_value < 0) |
cce99cd8 DS |
1135 | BUG("missing parent %s for commit %s", |
1136 | oid_to_hex(&parent->item->object.oid), | |
1137 | oid_to_hex(&(*list)->object.oid)); | |
08fd81c9 DS |
1138 | } |
1139 | ||
1140 | hashwrite_be32(f, edge_value); | |
1141 | ||
1142 | if (parent) | |
1143 | parent = parent->next; | |
1144 | ||
1145 | if (!parent) | |
1146 | edge_value = GRAPH_PARENT_NONE; | |
1147 | else if (parent->next) | |
5af7417b | 1148 | edge_value = GRAPH_EXTRA_EDGES_NEEDED | num_extra_edges; |
08fd81c9 | 1149 | else { |
45ee13b9 JK |
1150 | edge_value = oid_pos(&parent->item->object.oid, |
1151 | ctx->commits.list, | |
1152 | ctx->commits.nr, | |
1153 | commit_to_oid); | |
6c622f9f DS |
1154 | |
1155 | if (edge_value >= 0) | |
1156 | edge_value += ctx->new_num_commits_in_base; | |
8a6ac287 | 1157 | else if (ctx->new_base_graph) { |
6c622f9f | 1158 | uint32_t pos; |
809ea28f PS |
1159 | if (find_commit_pos_in_graph(parent->item, |
1160 | ctx->new_base_graph, | |
1161 | &pos)) | |
6c622f9f DS |
1162 | edge_value = pos; |
1163 | } | |
1164 | ||
08fd81c9 | 1165 | if (edge_value < 0) |
cce99cd8 DS |
1166 | BUG("missing parent %s for commit %s", |
1167 | oid_to_hex(&parent->item->object.oid), | |
1168 | oid_to_hex(&(*list)->object.oid)); | |
08fd81c9 DS |
1169 | } |
1170 | ||
1171 | hashwrite_be32(f, edge_value); | |
1172 | ||
5af7417b | 1173 | if (edge_value & GRAPH_EXTRA_EDGES_NEEDED) { |
08fd81c9 DS |
1174 | do { |
1175 | num_extra_edges++; | |
1176 | parent = parent->next; | |
1177 | } while (parent); | |
1178 | } | |
1179 | ||
1180 | if (sizeof((*list)->date) > 4) | |
1181 | packedDate[0] = htonl(((*list)->date >> 32) & 0x3); | |
1182 | else | |
1183 | packedDate[0] = 0; | |
1184 | ||
72a2bfca | 1185 | packedDate[0] |= htonl(*topo_level_slab_at(ctx->topo_levels, *list) << 2); |
3258c663 | 1186 | |
08fd81c9 DS |
1187 | packedDate[1] = htonl((*list)->date); |
1188 | hashwrite(f, packedDate, 8); | |
1189 | ||
1190 | list++; | |
1191 | } | |
9bab081d SG |
1192 | |
1193 | return 0; | |
08fd81c9 DS |
1194 | } |
1195 | ||
e8b63005 | 1196 | static int write_graph_chunk_generation_data(struct hashfile *f, |
eb907191 | 1197 | void *data) |
e8b63005 | 1198 | { |
eb907191 | 1199 | struct write_commit_graph_context *ctx = data; |
e8b63005 AK |
1200 | int i, num_generation_data_overflows = 0; |
1201 | ||
1202 | for (i = 0; i < ctx->commits.nr; i++) { | |
1203 | struct commit *c = ctx->commits.list[i]; | |
90cb1c47 DS |
1204 | timestamp_t offset; |
1205 | repo_parse_commit(ctx->r, c); | |
1206 | offset = commit_graph_data_at(c)->generation - c->date; | |
e8b63005 AK |
1207 | display_progress(ctx->progress, ++ctx->progress_cnt); |
1208 | ||
1209 | if (offset > GENERATION_NUMBER_V2_OFFSET_MAX) { | |
1210 | offset = CORRECTED_COMMIT_DATE_OFFSET_OVERFLOW | num_generation_data_overflows; | |
1211 | num_generation_data_overflows++; | |
1212 | } | |
1213 | ||
1214 | hashwrite_be32(f, offset); | |
1215 | } | |
1216 | ||
1217 | return 0; | |
1218 | } | |
1219 | ||
1220 | static int write_graph_chunk_generation_data_overflow(struct hashfile *f, | |
eb907191 | 1221 | void *data) |
e8b63005 | 1222 | { |
eb907191 | 1223 | struct write_commit_graph_context *ctx = data; |
e8b63005 AK |
1224 | int i; |
1225 | for (i = 0; i < ctx->commits.nr; i++) { | |
1226 | struct commit *c = ctx->commits.list[i]; | |
1227 | timestamp_t offset = commit_graph_data_at(c)->generation - c->date; | |
1228 | display_progress(ctx->progress, ++ctx->progress_cnt); | |
1229 | ||
1230 | if (offset > GENERATION_NUMBER_V2_OFFSET_MAX) { | |
1231 | hashwrite_be32(f, offset >> 32); | |
1232 | hashwrite_be32(f, (uint32_t) offset); | |
1233 | } | |
1234 | } | |
1235 | ||
1236 | return 0; | |
1237 | } | |
1238 | ||
9bab081d | 1239 | static int write_graph_chunk_extra_edges(struct hashfile *f, |
eb907191 | 1240 | void *data) |
08fd81c9 | 1241 | { |
eb907191 | 1242 | struct write_commit_graph_context *ctx = data; |
c9905bea DS |
1243 | struct commit **list = ctx->commits.list; |
1244 | struct commit **last = ctx->commits.list + ctx->commits.nr; | |
08fd81c9 DS |
1245 | struct commit_list *parent; |
1246 | ||
1247 | while (list < last) { | |
1248 | int num_parents = 0; | |
53035c4f | 1249 | |
c9905bea | 1250 | display_progress(ctx->progress, ++ctx->progress_cnt); |
53035c4f | 1251 | |
08fd81c9 DS |
1252 | for (parent = (*list)->parents; num_parents < 3 && parent; |
1253 | parent = parent->next) | |
1254 | num_parents++; | |
1255 | ||
1256 | if (num_parents <= 2) { | |
1257 | list++; | |
1258 | continue; | |
1259 | } | |
1260 | ||
1261 | /* Since num_parents > 2, this initializer is safe. */ | |
1262 | for (parent = (*list)->parents->next; parent; parent = parent->next) { | |
45ee13b9 JK |
1263 | int edge_value = oid_pos(&parent->item->object.oid, |
1264 | ctx->commits.list, | |
1265 | ctx->commits.nr, | |
1266 | commit_to_oid); | |
08fd81c9 | 1267 | |
6c622f9f DS |
1268 | if (edge_value >= 0) |
1269 | edge_value += ctx->new_num_commits_in_base; | |
8a6ac287 | 1270 | else if (ctx->new_base_graph) { |
6c622f9f | 1271 | uint32_t pos; |
809ea28f PS |
1272 | if (find_commit_pos_in_graph(parent->item, |
1273 | ctx->new_base_graph, | |
1274 | &pos)) | |
6c622f9f DS |
1275 | edge_value = pos; |
1276 | } | |
1277 | ||
08fd81c9 | 1278 | if (edge_value < 0) |
cce99cd8 DS |
1279 | BUG("missing parent %s for commit %s", |
1280 | oid_to_hex(&parent->item->object.oid), | |
1281 | oid_to_hex(&(*list)->object.oid)); | |
08fd81c9 DS |
1282 | else if (!parent->next) |
1283 | edge_value |= GRAPH_LAST_EDGE; | |
1284 | ||
1285 | hashwrite_be32(f, edge_value); | |
1286 | } | |
1287 | ||
1288 | list++; | |
1289 | } | |
9bab081d SG |
1290 | |
1291 | return 0; | |
08fd81c9 DS |
1292 | } |
1293 | ||
9bab081d | 1294 | static int write_graph_chunk_bloom_indexes(struct hashfile *f, |
eb907191 | 1295 | void *data) |
76ffbca7 | 1296 | { |
eb907191 | 1297 | struct write_commit_graph_context *ctx = data; |
76ffbca7 GS |
1298 | struct commit **list = ctx->commits.list; |
1299 | struct commit **last = ctx->commits.list + ctx->commits.nr; | |
1300 | uint32_t cur_pos = 0; | |
76ffbca7 GS |
1301 | |
1302 | while (list < last) { | |
312cff52 | 1303 | struct bloom_filter *filter = get_bloom_filter(ctx->r, *list); |
94919742 DS |
1304 | size_t len = filter ? filter->len : 0; |
1305 | cur_pos += len; | |
150cd3b6 | 1306 | display_progress(ctx->progress, ++ctx->progress_cnt); |
76ffbca7 GS |
1307 | hashwrite_be32(f, cur_pos); |
1308 | list++; | |
1309 | } | |
1310 | ||
9bab081d | 1311 | return 0; |
76ffbca7 GS |
1312 | } |
1313 | ||
0087a87b DS |
1314 | static void trace2_bloom_filter_settings(struct write_commit_graph_context *ctx) |
1315 | { | |
1316 | struct json_writer jw = JSON_WRITER_INIT; | |
1317 | ||
1318 | jw_object_begin(&jw, 0); | |
1319 | jw_object_intmax(&jw, "hash_version", ctx->bloom_settings->hash_version); | |
1320 | jw_object_intmax(&jw, "num_hashes", ctx->bloom_settings->num_hashes); | |
1321 | jw_object_intmax(&jw, "bits_per_entry", ctx->bloom_settings->bits_per_entry); | |
97ffa4fa | 1322 | jw_object_intmax(&jw, "max_changed_paths", ctx->bloom_settings->max_changed_paths); |
0087a87b DS |
1323 | jw_end(&jw); |
1324 | ||
1325 | trace2_data_json("bloom", ctx->r, "settings", &jw); | |
1326 | ||
1327 | jw_release(&jw); | |
76ffbca7 GS |
1328 | } |
1329 | ||
9bab081d | 1330 | static int write_graph_chunk_bloom_data(struct hashfile *f, |
eb907191 | 1331 | void *data) |
76ffbca7 | 1332 | { |
eb907191 | 1333 | struct write_commit_graph_context *ctx = data; |
76ffbca7 GS |
1334 | struct commit **list = ctx->commits.list; |
1335 | struct commit **last = ctx->commits.list + ctx->commits.nr; | |
76ffbca7 | 1336 | |
0087a87b DS |
1337 | trace2_bloom_filter_settings(ctx); |
1338 | ||
98037f2b DS |
1339 | hashwrite_be32(f, ctx->bloom_settings->hash_version); |
1340 | hashwrite_be32(f, ctx->bloom_settings->num_hashes); | |
1341 | hashwrite_be32(f, ctx->bloom_settings->bits_per_entry); | |
76ffbca7 GS |
1342 | |
1343 | while (list < last) { | |
312cff52 | 1344 | struct bloom_filter *filter = get_bloom_filter(ctx->r, *list); |
94919742 | 1345 | size_t len = filter ? filter->len : 0; |
94919742 | 1346 | |
150cd3b6 | 1347 | display_progress(ctx->progress, ++ctx->progress_cnt); |
94919742 DS |
1348 | if (len) |
1349 | hashwrite(f, filter->data, len * sizeof(unsigned char)); | |
76ffbca7 GS |
1350 | list++; |
1351 | } | |
1352 | ||
9bab081d | 1353 | return 0; |
76ffbca7 GS |
1354 | } |
1355 | ||
08fd81c9 DS |
1356 | static int add_packed_commits(const struct object_id *oid, |
1357 | struct packed_git *pack, | |
1358 | uint32_t pos, | |
1359 | void *data) | |
1360 | { | |
c9905bea | 1361 | struct write_commit_graph_context *ctx = (struct write_commit_graph_context*)data; |
08fd81c9 DS |
1362 | enum object_type type; |
1363 | off_t offset = nth_packed_object_offset(pack, pos); | |
1364 | struct object_info oi = OBJECT_INFO_INIT; | |
1365 | ||
c9905bea DS |
1366 | if (ctx->progress) |
1367 | display_progress(ctx->progress, ++ctx->progress_done); | |
7b0f2292 | 1368 | |
08fd81c9 | 1369 | oi.typep = &type; |
c9905bea | 1370 | if (packed_object_info(ctx->r, pack, offset, &oi) < 0) |
4f5b532d | 1371 | die(_("unable to get type of object %s"), oid_to_hex(oid)); |
08fd81c9 DS |
1372 | |
1373 | if (type != OBJ_COMMIT) | |
1374 | return 0; | |
1375 | ||
a5f1c448 | 1376 | oid_array_append(&ctx->oids, oid); |
d21ee7d1 JK |
1377 | set_commit_pos(ctx->r, oid); |
1378 | ||
08fd81c9 DS |
1379 | return 0; |
1380 | } | |
1381 | ||
c9905bea | 1382 | static void add_missing_parents(struct write_commit_graph_context *ctx, struct commit *commit) |
4f2542b4 DS |
1383 | { |
1384 | struct commit_list *parent; | |
1385 | for (parent = commit->parents; parent; parent = parent->next) { | |
cb99a34e | 1386 | if (!(parent->item->object.flags & REACHABLE)) { |
a5f1c448 | 1387 | oid_array_append(&ctx->oids, &parent->item->object.oid); |
cb99a34e | 1388 | parent->item->object.flags |= REACHABLE; |
4f2542b4 DS |
1389 | } |
1390 | } | |
1391 | } | |
1392 | ||
c9905bea | 1393 | static void close_reachable(struct write_commit_graph_context *ctx) |
4f2542b4 | 1394 | { |
49bbc57a | 1395 | int i; |
4f2542b4 | 1396 | struct commit *commit; |
98bb7961 TB |
1397 | enum commit_graph_split_flags flags = ctx->opts ? |
1398 | ctx->opts->split_flags : COMMIT_GRAPH_SPLIT_UNSPECIFIED; | |
4f2542b4 | 1399 | |
c9905bea DS |
1400 | if (ctx->report_progress) |
1401 | ctx->progress = start_delayed_progress( | |
1402 | _("Loading known commits in commit graph"), | |
1403 | ctx->oids.nr); | |
1404 | for (i = 0; i < ctx->oids.nr; i++) { | |
1405 | display_progress(ctx->progress, i + 1); | |
a5f1c448 | 1406 | commit = lookup_commit(ctx->r, &ctx->oids.oid[i]); |
4f2542b4 | 1407 | if (commit) |
cb99a34e | 1408 | commit->object.flags |= REACHABLE; |
4f2542b4 | 1409 | } |
c9905bea | 1410 | stop_progress(&ctx->progress); |
4f2542b4 DS |
1411 | |
1412 | /* | |
c9905bea | 1413 | * As this loop runs, ctx->oids.nr may grow, but not more |
4f2542b4 DS |
1414 | * than the number of missing commits in the reachable |
1415 | * closure. | |
1416 | */ | |
c9905bea DS |
1417 | if (ctx->report_progress) |
1418 | ctx->progress = start_delayed_progress( | |
1419 | _("Expanding reachable commits in commit graph"), | |
67fa6aac | 1420 | 0); |
c9905bea DS |
1421 | for (i = 0; i < ctx->oids.nr; i++) { |
1422 | display_progress(ctx->progress, i + 1); | |
a5f1c448 | 1423 | commit = lookup_commit(ctx->r, &ctx->oids.oid[i]); |
4f2542b4 | 1424 | |
6c622f9f DS |
1425 | if (!commit) |
1426 | continue; | |
1427 | if (ctx->split) { | |
c4cc0831 | 1428 | if ((!repo_parse_commit(ctx->r, commit) && |
c49c82aa | 1429 | commit_graph_position(commit) == COMMIT_NOT_FROM_GRAPH) || |
8a6ac287 | 1430 | flags == COMMIT_GRAPH_SPLIT_REPLACE) |
6c622f9f | 1431 | add_missing_parents(ctx, commit); |
c4cc0831 | 1432 | } else if (!repo_parse_commit_no_graph(ctx->r, commit)) |
c9905bea | 1433 | add_missing_parents(ctx, commit); |
4f2542b4 | 1434 | } |
c9905bea | 1435 | stop_progress(&ctx->progress); |
4f2542b4 | 1436 | |
c9905bea DS |
1437 | if (ctx->report_progress) |
1438 | ctx->progress = start_delayed_progress( | |
1439 | _("Clearing commit marks in commit graph"), | |
1440 | ctx->oids.nr); | |
1441 | for (i = 0; i < ctx->oids.nr; i++) { | |
1442 | display_progress(ctx->progress, i + 1); | |
a5f1c448 | 1443 | commit = lookup_commit(ctx->r, &ctx->oids.oid[i]); |
4f2542b4 DS |
1444 | |
1445 | if (commit) | |
cb99a34e | 1446 | commit->object.flags &= ~REACHABLE; |
4f2542b4 | 1447 | } |
c9905bea | 1448 | stop_progress(&ctx->progress); |
4f2542b4 DS |
1449 | } |
1450 | ||
368d19b0 DS |
1451 | struct compute_generation_info { |
1452 | struct repository *r; | |
1453 | struct packed_commit_list *commits; | |
1454 | struct progress *progress; | |
1455 | int progress_cnt; | |
1456 | ||
1457 | timestamp_t (*get_generation)(struct commit *c, void *data); | |
1458 | void (*set_generation)(struct commit *c, timestamp_t gen, void *data); | |
1459 | void *data; | |
1460 | }; | |
1461 | ||
1462 | static timestamp_t compute_generation_from_max(struct commit *c, | |
1463 | timestamp_t max_gen, | |
1464 | int generation_version) | |
1465 | { | |
1466 | switch (generation_version) { | |
1467 | case 1: /* topological levels */ | |
1468 | if (max_gen > GENERATION_NUMBER_V1_MAX - 1) | |
1469 | max_gen = GENERATION_NUMBER_V1_MAX - 1; | |
1470 | return max_gen + 1; | |
1471 | ||
1472 | case 2: /* corrected commit date */ | |
1473 | if (c->date && c->date > max_gen) | |
1474 | max_gen = c->date - 1; | |
1475 | return max_gen + 1; | |
1476 | ||
1477 | default: | |
1478 | BUG("attempting unimplemented version"); | |
1479 | } | |
1480 | } | |
1481 | ||
1482 | static void compute_reachable_generation_numbers( | |
1483 | struct compute_generation_info *info, | |
1484 | int generation_version) | |
3258c663 DS |
1485 | { |
1486 | int i; | |
1487 | struct commit_list *list = NULL; | |
1488 | ||
368d19b0 DS |
1489 | for (i = 0; i < info->commits->nr; i++) { |
1490 | struct commit *c = info->commits->list[i]; | |
1491 | timestamp_t gen; | |
1492 | repo_parse_commit(info->r, c); | |
1493 | gen = info->get_generation(c, info->data); | |
1494 | display_progress(info->progress, info->progress_cnt + 1); | |
4844812b | 1495 | |
368d19b0 | 1496 | if (gen != GENERATION_NUMBER_ZERO && gen != GENERATION_NUMBER_INFINITY) |
3258c663 DS |
1497 | continue; |
1498 | ||
90cb1c47 | 1499 | commit_list_insert(c, &list); |
3258c663 DS |
1500 | while (list) { |
1501 | struct commit *current = list->item; | |
1502 | struct commit_list *parent; | |
1503 | int all_parents_computed = 1; | |
368d19b0 | 1504 | uint32_t max_gen = 0; |
3258c663 DS |
1505 | |
1506 | for (parent = current->parents; parent; parent = parent->next) { | |
368d19b0 DS |
1507 | repo_parse_commit(info->r, parent->item); |
1508 | gen = info->get_generation(parent->item, info->data); | |
4844812b | 1509 | |
368d19b0 | 1510 | if (gen == GENERATION_NUMBER_ZERO) { |
3258c663 DS |
1511 | all_parents_computed = 0; |
1512 | commit_list_insert(parent->item, &list); | |
1513 | break; | |
3258c663 | 1514 | } |
c1a09119 | 1515 | |
368d19b0 DS |
1516 | if (gen > max_gen) |
1517 | max_gen = gen; | |
3258c663 DS |
1518 | } |
1519 | ||
1520 | if (all_parents_computed) { | |
3258c663 | 1521 | pop_commit(&list); |
368d19b0 DS |
1522 | gen = compute_generation_from_max( |
1523 | current, max_gen, | |
1524 | generation_version); | |
1525 | info->set_generation(current, gen, info->data); | |
9c2c0a82 DS |
1526 | } |
1527 | } | |
1528 | } | |
368d19b0 DS |
1529 | } |
1530 | ||
1531 | static timestamp_t get_topo_level(struct commit *c, void *data) | |
1532 | { | |
1533 | struct write_commit_graph_context *ctx = data; | |
1534 | return *topo_level_slab_at(ctx->topo_levels, c); | |
1535 | } | |
1536 | ||
1537 | static void set_topo_level(struct commit *c, timestamp_t t, void *data) | |
1538 | { | |
1539 | struct write_commit_graph_context *ctx = data; | |
1540 | *topo_level_slab_at(ctx->topo_levels, c) = (uint32_t)t; | |
1541 | } | |
1542 | ||
1543 | static void compute_topological_levels(struct write_commit_graph_context *ctx) | |
1544 | { | |
1545 | struct compute_generation_info info = { | |
1546 | .r = ctx->r, | |
1547 | .commits = &ctx->commits, | |
1548 | .get_generation = get_topo_level, | |
1549 | .set_generation = set_topo_level, | |
1550 | .data = ctx, | |
1551 | }; | |
1552 | ||
1553 | if (ctx->report_progress) | |
1554 | info.progress = ctx->progress | |
1555 | = start_delayed_progress( | |
1556 | _("Computing commit graph topological levels"), | |
1557 | ctx->commits.nr); | |
1558 | ||
1559 | compute_reachable_generation_numbers(&info, 1); | |
1560 | ||
9c2c0a82 DS |
1561 | stop_progress(&ctx->progress); |
1562 | } | |
1563 | ||
80c928d9 DS |
1564 | static timestamp_t get_generation_from_graph_data(struct commit *c, void *data) |
1565 | { | |
1566 | return commit_graph_data_at(c)->generation; | |
1567 | } | |
1568 | ||
1569 | static void set_generation_v2(struct commit *c, timestamp_t t, void *data) | |
1570 | { | |
1571 | struct commit_graph_data *g = commit_graph_data_at(c); | |
d3af1c19 | 1572 | g->generation = t; |
80c928d9 DS |
1573 | } |
1574 | ||
9c2c0a82 DS |
1575 | static void compute_generation_numbers(struct write_commit_graph_context *ctx) |
1576 | { | |
1577 | int i; | |
80c928d9 DS |
1578 | struct compute_generation_info info = { |
1579 | .r = ctx->r, | |
1580 | .commits = &ctx->commits, | |
1581 | .get_generation = get_generation_from_graph_data, | |
1582 | .set_generation = set_generation_v2, | |
1583 | .data = ctx, | |
1584 | }; | |
9c2c0a82 DS |
1585 | |
1586 | if (ctx->report_progress) | |
80c928d9 DS |
1587 | info.progress = ctx->progress |
1588 | = start_delayed_progress( | |
9c2c0a82 DS |
1589 | _("Computing commit graph generation numbers"), |
1590 | ctx->commits.nr); | |
fde55b09 DS |
1591 | |
1592 | if (!ctx->trust_generation_numbers) { | |
1593 | for (i = 0; i < ctx->commits.nr; i++) { | |
1594 | struct commit *c = ctx->commits.list[i]; | |
1595 | repo_parse_commit(ctx->r, c); | |
1596 | commit_graph_data_at(c)->generation = GENERATION_NUMBER_ZERO; | |
1597 | } | |
1598 | } | |
1599 | ||
80c928d9 | 1600 | compute_reachable_generation_numbers(&info, 2); |
75979d94 DS |
1601 | |
1602 | for (i = 0; i < ctx->commits.nr; i++) { | |
1603 | struct commit *c = ctx->commits.list[i]; | |
1604 | timestamp_t offset = commit_graph_data_at(c)->generation - c->date; | |
1605 | if (offset > GENERATION_NUMBER_V2_OFFSET_MAX) | |
1606 | ctx->num_generation_data_overflows++; | |
1607 | } | |
c9905bea | 1608 | stop_progress(&ctx->progress); |
3258c663 DS |
1609 | } |
1610 | ||
c08645b3 TB |
1611 | static void set_generation_in_graph_data(struct commit *c, timestamp_t t, |
1612 | void *data) | |
1613 | { | |
1614 | commit_graph_data_at(c)->generation = t; | |
1615 | } | |
1616 | ||
1617 | /* | |
1618 | * After this method, all commits reachable from those in the given | |
1619 | * list will have non-zero, non-infinite generation numbers. | |
1620 | */ | |
1621 | void ensure_generations_valid(struct repository *r, | |
1622 | struct commit **commits, size_t nr) | |
1623 | { | |
1624 | int generation_version = get_configured_generation_version(r); | |
1625 | struct packed_commit_list list = { | |
1626 | .list = commits, | |
1627 | .alloc = nr, | |
1628 | .nr = nr, | |
1629 | }; | |
1630 | struct compute_generation_info info = { | |
1631 | .r = r, | |
1632 | .commits = &list, | |
1633 | .get_generation = get_generation_from_graph_data, | |
1634 | .set_generation = set_generation_in_graph_data, | |
1635 | }; | |
1636 | ||
1637 | compute_reachable_generation_numbers(&info, generation_version); | |
1638 | } | |
1639 | ||
312cff52 TB |
1640 | static void trace2_bloom_filter_write_statistics(struct write_commit_graph_context *ctx) |
1641 | { | |
1642 | trace2_data_intmax("commit-graph", ctx->r, "filter-computed", | |
1643 | ctx->count_bloom_filter_computed); | |
1644 | trace2_data_intmax("commit-graph", ctx->r, "filter-not-computed", | |
1645 | ctx->count_bloom_filter_not_computed); | |
59f0d507 TB |
1646 | trace2_data_intmax("commit-graph", ctx->r, "filter-trunc-empty", |
1647 | ctx->count_bloom_filter_trunc_empty); | |
312cff52 TB |
1648 | trace2_data_intmax("commit-graph", ctx->r, "filter-trunc-large", |
1649 | ctx->count_bloom_filter_trunc_large); | |
1650 | } | |
1651 | ||
f97b9325 GS |
1652 | static void compute_bloom_filters(struct write_commit_graph_context *ctx) |
1653 | { | |
1654 | int i; | |
1655 | struct progress *progress = NULL; | |
d21ee7d1 | 1656 | struct commit **sorted_commits; |
809e0327 | 1657 | int max_new_filters; |
f97b9325 GS |
1658 | |
1659 | init_bloom_filters(); | |
1660 | ||
1661 | if (ctx->report_progress) | |
1662 | progress = start_delayed_progress( | |
1663 | _("Computing commit changed paths Bloom filters"), | |
1664 | ctx->commits.nr); | |
1665 | ||
6e578410 | 1666 | DUP_ARRAY(sorted_commits, ctx->commits.list, ctx->commits.nr); |
3d112755 GS |
1667 | |
1668 | if (ctx->order_by_pack) | |
1669 | QSORT(sorted_commits, ctx->commits.nr, commit_pos_cmp); | |
1670 | else | |
1671 | QSORT(sorted_commits, ctx->commits.nr, commit_gen_cmp); | |
d21ee7d1 | 1672 | |
809e0327 TB |
1673 | max_new_filters = ctx->opts && ctx->opts->max_new_filters >= 0 ? |
1674 | ctx->opts->max_new_filters : ctx->commits.nr; | |
1675 | ||
f97b9325 | 1676 | for (i = 0; i < ctx->commits.nr; i++) { |
312cff52 | 1677 | enum bloom_filter_computed computed = 0; |
d21ee7d1 | 1678 | struct commit *c = sorted_commits[i]; |
312cff52 TB |
1679 | struct bloom_filter *filter = get_or_compute_bloom_filter( |
1680 | ctx->r, | |
1681 | c, | |
809e0327 | 1682 | ctx->count_bloom_filter_computed < max_new_filters, |
9a7a9ed1 | 1683 | ctx->bloom_settings, |
312cff52 TB |
1684 | &computed); |
1685 | if (computed & BLOOM_COMPUTED) { | |
1686 | ctx->count_bloom_filter_computed++; | |
59f0d507 TB |
1687 | if (computed & BLOOM_TRUNC_EMPTY) |
1688 | ctx->count_bloom_filter_trunc_empty++; | |
312cff52 TB |
1689 | if (computed & BLOOM_TRUNC_LARGE) |
1690 | ctx->count_bloom_filter_trunc_large++; | |
1691 | } else if (computed & BLOOM_NOT_COMPUTED) | |
1692 | ctx->count_bloom_filter_not_computed++; | |
809e0327 TB |
1693 | ctx->total_bloom_filter_data_size += filter |
1694 | ? sizeof(unsigned char) * filter->len : 0; | |
f97b9325 GS |
1695 | display_progress(progress, i + 1); |
1696 | } | |
1697 | ||
312cff52 TB |
1698 | if (trace2_is_enabled()) |
1699 | trace2_bloom_filter_write_statistics(ctx); | |
1700 | ||
d21ee7d1 | 1701 | free(sorted_commits); |
f97b9325 GS |
1702 | stop_progress(&progress); |
1703 | } | |
1704 | ||
1fe10844 TB |
1705 | struct refs_cb_data { |
1706 | struct oidset *commits; | |
d335ce8f | 1707 | struct progress *progress; |
1fe10844 TB |
1708 | }; |
1709 | ||
5cf88fd8 | 1710 | static int add_ref_to_set(const char *refname UNUSED, |
6830c360 | 1711 | const struct object_id *oid, |
5cf88fd8 | 1712 | int flags UNUSED, void *cb_data) |
59fb8770 | 1713 | { |
630cd519 | 1714 | struct object_id peeled; |
1fe10844 | 1715 | struct refs_cb_data *data = (struct refs_cb_data *)cb_data; |
59fb8770 | 1716 | |
36a31792 | 1717 | if (!peel_iterated_oid(oid, &peeled)) |
630cd519 TB |
1718 | oid = &peeled; |
1719 | if (oid_object_info(the_repository, oid, NULL) == OBJ_COMMIT) | |
1720 | oidset_insert(data->commits, oid); | |
d335ce8f TB |
1721 | |
1722 | display_progress(data->progress, oidset_size(data->commits)); | |
59fb8770 | 1723 | |
59fb8770 DS |
1724 | return 0; |
1725 | } | |
1726 | ||
0bd52e27 | 1727 | int write_commit_graph_reachable(struct object_directory *odb, |
39d88318 | 1728 | enum commit_graph_write_flags flags, |
98bb7961 | 1729 | const struct commit_graph_opts *opts) |
59fb8770 | 1730 | { |
6830c360 | 1731 | struct oidset commits = OIDSET_INIT; |
1fe10844 | 1732 | struct refs_cb_data data; |
e103f727 | 1733 | int result; |
59fb8770 | 1734 | |
1fe10844 TB |
1735 | memset(&data, 0, sizeof(data)); |
1736 | data.commits = &commits; | |
d335ce8f TB |
1737 | if (flags & COMMIT_GRAPH_WRITE_PROGRESS) |
1738 | data.progress = start_delayed_progress( | |
1739 | _("Collecting referenced commits"), 0); | |
1fe10844 TB |
1740 | |
1741 | for_each_ref(add_ref_to_set, &data); | |
6f9d5f2f SG |
1742 | |
1743 | stop_progress(&data.progress); | |
1744 | ||
6830c360 | 1745 | result = write_commit_graph(odb, NULL, &commits, |
98bb7961 | 1746 | flags, opts); |
f4dbdfc4 | 1747 | |
6830c360 | 1748 | oidset_clear(&commits); |
e103f727 | 1749 | return result; |
59fb8770 DS |
1750 | } |
1751 | ||
ef5b83f2 | 1752 | static int fill_oids_from_packs(struct write_commit_graph_context *ctx, |
4a047908 | 1753 | const struct string_list *pack_indexes) |
08fd81c9 | 1754 | { |
ef5b83f2 | 1755 | uint32_t i; |
28944739 | 1756 | struct strbuf progress_title = STRBUF_INIT; |
ef5b83f2 DS |
1757 | struct strbuf packname = STRBUF_INIT; |
1758 | int dirlen; | |
51a94d8f | 1759 | int ret = 0; |
08fd81c9 | 1760 | |
0bd52e27 | 1761 | strbuf_addf(&packname, "%s/pack/", ctx->odb->path); |
ef5b83f2 DS |
1762 | dirlen = packname.len; |
1763 | if (ctx->report_progress) { | |
1764 | strbuf_addf(&progress_title, | |
99d60545 ÆAB |
1765 | Q_("Finding commits for commit graph in %"PRIuMAX" pack", |
1766 | "Finding commits for commit graph in %"PRIuMAX" packs", | |
ef5b83f2 | 1767 | pack_indexes->nr), |
99d60545 | 1768 | (uintmax_t)pack_indexes->nr); |
ef5b83f2 DS |
1769 | ctx->progress = start_delayed_progress(progress_title.buf, 0); |
1770 | ctx->progress_done = 0; | |
7547b95b | 1771 | } |
ef5b83f2 DS |
1772 | for (i = 0; i < pack_indexes->nr; i++) { |
1773 | struct packed_git *p; | |
1774 | strbuf_setlen(&packname, dirlen); | |
1775 | strbuf_addstr(&packname, pack_indexes->items[i].string); | |
1776 | p = add_packed_git(packname.buf, packname.len, 1); | |
1777 | if (!p) { | |
51a94d8f ÆAB |
1778 | ret = error(_("error adding pack %s"), packname.buf); |
1779 | goto cleanup; | |
7547b95b | 1780 | } |
ef5b83f2 | 1781 | if (open_pack_index(p)) { |
51a94d8f ÆAB |
1782 | ret = error(_("error opening index for %s"), packname.buf); |
1783 | goto cleanup; | |
ef5b83f2 DS |
1784 | } |
1785 | for_each_object_in_pack(p, add_packed_commits, ctx, | |
1786 | FOR_EACH_OBJECT_PACK_ORDER); | |
1787 | close_pack(p); | |
1788 | free(p); | |
7547b95b DS |
1789 | } |
1790 | ||
51a94d8f | 1791 | cleanup: |
ef5b83f2 | 1792 | stop_progress(&ctx->progress); |
0aa6bce7 | 1793 | strbuf_release(&progress_title); |
ef5b83f2 DS |
1794 | strbuf_release(&packname); |
1795 | ||
51a94d8f | 1796 | return ret; |
ef5b83f2 DS |
1797 | } |
1798 | ||
6830c360 TB |
1799 | static int fill_oids_from_commits(struct write_commit_graph_context *ctx, |
1800 | struct oidset *commits) | |
4c9efe85 | 1801 | { |
6830c360 TB |
1802 | struct oidset_iter iter; |
1803 | struct object_id *oid; | |
1804 | ||
1805 | if (!oidset_size(commits)) | |
1806 | return 0; | |
4c9efe85 | 1807 | |
6830c360 TB |
1808 | oidset_iter_init(commits, &iter); |
1809 | while ((oid = oidset_iter_next(&iter))) { | |
a5f1c448 | 1810 | oid_array_append(&ctx->oids, oid); |
3d5df01b | 1811 | } |
6830c360 | 1812 | |
7c5c9b9c | 1813 | return 0; |
4c9efe85 | 1814 | } |
3d5df01b | 1815 | |
b2c83060 DS |
1816 | static void fill_oids_from_all_packs(struct write_commit_graph_context *ctx) |
1817 | { | |
1818 | if (ctx->report_progress) | |
1819 | ctx->progress = start_delayed_progress( | |
1820 | _("Finding commits for commit graph among packed objects"), | |
1821 | ctx->approx_nr_objects); | |
1822 | for_each_packed_object(add_packed_commits, ctx, | |
1823 | FOR_EACH_OBJECT_PACK_ORDER); | |
1824 | if (ctx->progress_done < ctx->approx_nr_objects) | |
1825 | display_progress(ctx->progress, ctx->approx_nr_objects); | |
1826 | stop_progress(&ctx->progress); | |
1827 | } | |
049d51a2 | 1828 | |
f998d542 DS |
1829 | static void copy_oids_to_commits(struct write_commit_graph_context *ctx) |
1830 | { | |
1831 | uint32_t i; | |
98bb7961 TB |
1832 | enum commit_graph_split_flags flags = ctx->opts ? |
1833 | ctx->opts->split_flags : COMMIT_GRAPH_SPLIT_UNSPECIFIED; | |
08fd81c9 | 1834 | |
f998d542 DS |
1835 | ctx->num_extra_edges = 0; |
1836 | if (ctx->report_progress) | |
1837 | ctx->progress = start_delayed_progress( | |
890226cc | 1838 | _("Finding extra edges in commit graph"), |
f998d542 | 1839 | ctx->oids.nr); |
a5f1c448 JK |
1840 | oid_array_sort(&ctx->oids); |
1841 | for (i = 0; i < ctx->oids.nr; i = oid_array_next_unique(&ctx->oids, i)) { | |
689a146c RS |
1842 | unsigned int num_parents; |
1843 | ||
f998d542 | 1844 | display_progress(ctx->progress, i + 1); |
08fd81c9 | 1845 | |
6c622f9f | 1846 | ALLOC_GROW(ctx->commits.list, ctx->commits.nr + 1, ctx->commits.alloc); |
a5f1c448 | 1847 | ctx->commits.list[ctx->commits.nr] = lookup_commit(ctx->r, &ctx->oids.oid[i]); |
6c622f9f | 1848 | |
8a6ac287 | 1849 | if (ctx->split && flags != COMMIT_GRAPH_SPLIT_REPLACE && |
c49c82aa | 1850 | commit_graph_position(ctx->commits.list[ctx->commits.nr]) != COMMIT_NOT_FROM_GRAPH) |
6c622f9f DS |
1851 | continue; |
1852 | ||
8a6ac287 | 1853 | if (ctx->split && flags == COMMIT_GRAPH_SPLIT_REPLACE) |
c4cc0831 | 1854 | repo_parse_commit(ctx->r, ctx->commits.list[ctx->commits.nr]); |
8a6ac287 | 1855 | else |
c4cc0831 | 1856 | repo_parse_commit_no_graph(ctx->r, ctx->commits.list[ctx->commits.nr]); |
08fd81c9 | 1857 | |
689a146c | 1858 | num_parents = commit_list_count(ctx->commits.list[ctx->commits.nr]->parents); |
08fd81c9 | 1859 | if (num_parents > 2) |
f998d542 | 1860 | ctx->num_extra_edges += num_parents - 1; |
08fd81c9 | 1861 | |
f998d542 | 1862 | ctx->commits.nr++; |
08fd81c9 | 1863 | } |
f998d542 DS |
1864 | stop_progress(&ctx->progress); |
1865 | } | |
08fd81c9 | 1866 | |
6c622f9f DS |
1867 | static int write_graph_chunk_base_1(struct hashfile *f, |
1868 | struct commit_graph *g) | |
1869 | { | |
1870 | int num = 0; | |
1871 | ||
1872 | if (!g) | |
1873 | return 0; | |
1874 | ||
1875 | num = write_graph_chunk_base_1(f, g->base_graph); | |
1876 | hashwrite(f, g->oid.hash, the_hash_algo->rawsz); | |
1877 | return num + 1; | |
1878 | } | |
1879 | ||
1880 | static int write_graph_chunk_base(struct hashfile *f, | |
eb907191 | 1881 | void *data) |
6c622f9f | 1882 | { |
eb907191 | 1883 | struct write_commit_graph_context *ctx = data; |
6c622f9f DS |
1884 | int num = write_graph_chunk_base_1(f, ctx->new_base_graph); |
1885 | ||
1886 | if (num != ctx->num_commit_graphs_after - 1) { | |
1887 | error(_("failed to write correct number of base graph ids")); | |
1888 | return -1; | |
1889 | } | |
1890 | ||
1891 | return 0; | |
1892 | } | |
1893 | ||
238def57 | 1894 | static int write_commit_graph_file(struct write_commit_graph_context *ctx) |
08fd81c9 | 1895 | { |
238def57 | 1896 | uint32_t i; |
6c622f9f | 1897 | int fd; |
08fd81c9 | 1898 | struct hashfile *f; |
08fd81c9 | 1899 | struct lock_file lk = LOCK_INIT; |
c1665998 | 1900 | const unsigned hashsz = the_hash_algo->rawsz; |
28944739 | 1901 | struct strbuf progress_title = STRBUF_INIT; |
47410aa8 | 1902 | struct chunkfile *cf; |
72871b13 | 1903 | unsigned char file_hash[GIT_MAX_RAWSZ]; |
6c622f9f DS |
1904 | |
1905 | if (ctx->split) { | |
1906 | struct strbuf tmp_file = STRBUF_INIT; | |
1907 | ||
1908 | strbuf_addf(&tmp_file, | |
1909 | "%s/info/commit-graphs/tmp_graph_XXXXXX", | |
0bd52e27 | 1910 | ctx->odb->path); |
6c622f9f DS |
1911 | ctx->graph_name = strbuf_detach(&tmp_file, NULL); |
1912 | } else { | |
ad2dd5bb | 1913 | ctx->graph_name = get_commit_graph_filename(ctx->odb); |
6c622f9f | 1914 | } |
238def57 | 1915 | |
238def57 DS |
1916 | if (safe_create_leading_directories(ctx->graph_name)) { |
1917 | UNLEAK(ctx->graph_name); | |
1918 | error(_("unable to create leading directories of %s"), | |
1919 | ctx->graph_name); | |
1920 | return -1; | |
f4dbdfc4 | 1921 | } |
08fd81c9 | 1922 | |
6c622f9f | 1923 | if (ctx->split) { |
663b2b1b | 1924 | char *lock_name = get_commit_graph_chain_filename(ctx->odb); |
08fd81c9 | 1925 | |
45a4365c TB |
1926 | hold_lock_file_for_update_mode(&lk, lock_name, |
1927 | LOCK_DIE_ON_ERROR, 0444); | |
ef3fe214 | 1928 | free(lock_name); |
08fd81c9 | 1929 | |
6c622f9f DS |
1930 | fd = git_mkstemp_mode(ctx->graph_name, 0444); |
1931 | if (fd < 0) { | |
a2d57e22 | 1932 | error(_("unable to create temporary graph layer")); |
6c622f9f DS |
1933 | return -1; |
1934 | } | |
1935 | ||
f4d62847 TB |
1936 | if (adjust_shared_perm(ctx->graph_name)) { |
1937 | error(_("unable to adjust shared permissions for '%s'"), | |
1938 | ctx->graph_name); | |
1939 | return -1; | |
1940 | } | |
1941 | ||
6c622f9f DS |
1942 | f = hashfd(fd, ctx->graph_name); |
1943 | } else { | |
1f9becae TB |
1944 | hold_lock_file_for_update_mode(&lk, ctx->graph_name, |
1945 | LOCK_DIE_ON_ERROR, 0444); | |
a52cdce9 MÅ |
1946 | fd = get_lock_file_fd(&lk); |
1947 | f = hashfd(fd, get_lock_file_path(&lk)); | |
6c622f9f | 1948 | } |
08fd81c9 | 1949 | |
47410aa8 DS |
1950 | cf = init_chunkfile(f); |
1951 | ||
1952 | add_chunk(cf, GRAPH_CHUNKID_OIDFANOUT, GRAPH_FANOUT_SIZE, | |
1953 | write_graph_chunk_fanout); | |
1954 | add_chunk(cf, GRAPH_CHUNKID_OIDLOOKUP, hashsz * ctx->commits.nr, | |
1955 | write_graph_chunk_oids); | |
1956 | add_chunk(cf, GRAPH_CHUNKID_DATA, (hashsz + 16) * ctx->commits.nr, | |
1957 | write_graph_chunk_data); | |
e8b63005 | 1958 | |
47410aa8 DS |
1959 | if (ctx->write_generation_data) |
1960 | add_chunk(cf, GRAPH_CHUNKID_GENERATION_DATA, | |
1961 | sizeof(uint32_t) * ctx->commits.nr, | |
1962 | write_graph_chunk_generation_data); | |
1963 | if (ctx->num_generation_data_overflows) | |
1964 | add_chunk(cf, GRAPH_CHUNKID_GENERATION_DATA_OVERFLOW, | |
1965 | sizeof(timestamp_t) * ctx->num_generation_data_overflows, | |
1966 | write_graph_chunk_generation_data_overflow); | |
1967 | if (ctx->num_extra_edges) | |
1968 | add_chunk(cf, GRAPH_CHUNKID_EXTRAEDGES, | |
1969 | 4 * ctx->num_extra_edges, | |
1970 | write_graph_chunk_extra_edges); | |
76ffbca7 | 1971 | if (ctx->changed_paths) { |
47410aa8 DS |
1972 | add_chunk(cf, GRAPH_CHUNKID_BLOOMINDEXES, |
1973 | sizeof(uint32_t) * ctx->commits.nr, | |
1974 | write_graph_chunk_bloom_indexes); | |
1975 | add_chunk(cf, GRAPH_CHUNKID_BLOOMDATA, | |
1976 | sizeof(uint32_t) * 3 | |
1977 | + ctx->total_bloom_filter_data_size, | |
1978 | write_graph_chunk_bloom_data); | |
76ffbca7 | 1979 | } |
47410aa8 DS |
1980 | if (ctx->num_commit_graphs_after > 1) |
1981 | add_chunk(cf, GRAPH_CHUNKID_BASE, | |
1982 | hashsz * (ctx->num_commit_graphs_after - 1), | |
1983 | write_graph_chunk_base); | |
144354b0 DS |
1984 | |
1985 | hashwrite_be32(f, GRAPH_SIGNATURE); | |
1986 | ||
1987 | hashwrite_u8(f, GRAPH_VERSION); | |
d9fef9d9 | 1988 | hashwrite_u8(f, oid_version(the_hash_algo)); |
47410aa8 | 1989 | hashwrite_u8(f, get_num_chunks(cf)); |
6c622f9f | 1990 | hashwrite_u8(f, ctx->num_commit_graphs_after - 1); |
08fd81c9 | 1991 | |
238def57 | 1992 | if (ctx->report_progress) { |
28944739 ÆAB |
1993 | strbuf_addf(&progress_title, |
1994 | Q_("Writing out commit graph in %d pass", | |
1995 | "Writing out commit graph in %d passes", | |
c4ff24bb TB |
1996 | get_num_chunks(cf)), |
1997 | get_num_chunks(cf)); | |
238def57 | 1998 | ctx->progress = start_delayed_progress( |
28944739 | 1999 | progress_title.buf, |
c4ff24bb | 2000 | get_num_chunks(cf) * ctx->commits.nr); |
28944739 | 2001 | } |
17e6275f | 2002 | |
47410aa8 | 2003 | write_chunkfile(cf, ctx); |
17e6275f | 2004 | |
238def57 | 2005 | stop_progress(&ctx->progress); |
28944739 | 2006 | strbuf_release(&progress_title); |
08fd81c9 | 2007 | |
6c622f9f DS |
2008 | if (ctx->split && ctx->base_graph_name && ctx->num_commit_graphs_after > 1) { |
2009 | char *new_base_hash = xstrdup(oid_to_hex(&ctx->new_base_graph->oid)); | |
ad2dd5bb | 2010 | char *new_base_name = get_split_graph_filename(ctx->new_base_graph->odb, new_base_hash); |
6c622f9f DS |
2011 | |
2012 | free(ctx->commit_graph_filenames_after[ctx->num_commit_graphs_after - 2]); | |
2013 | free(ctx->commit_graph_hash_after[ctx->num_commit_graphs_after - 2]); | |
2014 | ctx->commit_graph_filenames_after[ctx->num_commit_graphs_after - 2] = new_base_name; | |
2015 | ctx->commit_graph_hash_after[ctx->num_commit_graphs_after - 2] = new_base_hash; | |
2016 | } | |
2017 | ||
c3a3a964 | 2018 | close_commit_graph(ctx->r->objects); |
020406ea NS |
2019 | finalize_hashfile(f, file_hash, FSYNC_COMPONENT_COMMIT_GRAPH, |
2020 | CSUM_HASH_IN_STREAM | CSUM_FSYNC); | |
47410aa8 | 2021 | free_chunkfile(cf); |
6c622f9f DS |
2022 | |
2023 | if (ctx->split) { | |
2024 | FILE *chainf = fdopen_lock_file(&lk, "w"); | |
2025 | char *final_graph_name; | |
2026 | int result; | |
2027 | ||
2028 | close(fd); | |
2029 | ||
2030 | if (!chainf) { | |
2031 | error(_("unable to open commit-graph chain file")); | |
2032 | return -1; | |
2033 | } | |
2034 | ||
2035 | if (ctx->base_graph_name) { | |
8a6ac287 TB |
2036 | const char *dest; |
2037 | int idx = ctx->num_commit_graphs_after - 1; | |
2038 | if (ctx->num_commit_graphs_after > 1) | |
2039 | idx--; | |
2040 | ||
2041 | dest = ctx->commit_graph_filenames_after[idx]; | |
6c622f9f | 2042 | |
135a7123 DS |
2043 | if (strcmp(ctx->base_graph_name, dest)) { |
2044 | result = rename(ctx->base_graph_name, dest); | |
2045 | ||
2046 | if (result) { | |
2047 | error(_("failed to rename base commit-graph file")); | |
2048 | return -1; | |
2049 | } | |
6c622f9f DS |
2050 | } |
2051 | } else { | |
ad2dd5bb | 2052 | char *graph_name = get_commit_graph_filename(ctx->odb); |
6c622f9f | 2053 | unlink(graph_name); |
ef3fe214 | 2054 | free(graph_name); |
6c622f9f DS |
2055 | } |
2056 | ||
72871b13 | 2057 | ctx->commit_graph_hash_after[ctx->num_commit_graphs_after - 1] = xstrdup(hash_to_hex(file_hash)); |
ad2dd5bb | 2058 | final_graph_name = get_split_graph_filename(ctx->odb, |
6c622f9f DS |
2059 | ctx->commit_graph_hash_after[ctx->num_commit_graphs_after - 1]); |
2060 | ctx->commit_graph_filenames_after[ctx->num_commit_graphs_after - 1] = final_graph_name; | |
2061 | ||
2062 | result = rename(ctx->graph_name, final_graph_name); | |
2063 | ||
2064 | for (i = 0; i < ctx->num_commit_graphs_after; i++) | |
a52cdce9 | 2065 | fprintf(get_lock_file_fp(&lk), "%s\n", ctx->commit_graph_hash_after[i]); |
6c622f9f DS |
2066 | |
2067 | if (result) { | |
2068 | error(_("failed to rename temporary commit-graph file")); | |
2069 | return -1; | |
2070 | } | |
2071 | } | |
2072 | ||
08fd81c9 DS |
2073 | commit_lock_file(&lk); |
2074 | ||
238def57 DS |
2075 | return 0; |
2076 | } | |
2077 | ||
1771be90 DS |
2078 | static void split_graph_merge_strategy(struct write_commit_graph_context *ctx) |
2079 | { | |
8da02ce6 AH |
2080 | struct commit_graph *g; |
2081 | uint32_t num_commits; | |
fdbde82f | 2082 | enum commit_graph_split_flags flags = COMMIT_GRAPH_SPLIT_UNSPECIFIED; |
1771be90 DS |
2083 | uint32_t i; |
2084 | ||
c2bc6e6a DS |
2085 | int max_commits = 0; |
2086 | int size_mult = 2; | |
2087 | ||
98bb7961 TB |
2088 | if (ctx->opts) { |
2089 | max_commits = ctx->opts->max_commits; | |
63020f17 | 2090 | |
98bb7961 TB |
2091 | if (ctx->opts->size_multiple) |
2092 | size_mult = ctx->opts->size_multiple; | |
fdbde82f | 2093 | |
98bb7961 | 2094 | flags = ctx->opts->split_flags; |
c2bc6e6a DS |
2095 | } |
2096 | ||
1771be90 | 2097 | g = ctx->r->objects->commit_graph; |
8da02ce6 | 2098 | num_commits = ctx->commits.nr; |
8a6ac287 TB |
2099 | if (flags == COMMIT_GRAPH_SPLIT_REPLACE) |
2100 | ctx->num_commit_graphs_after = 1; | |
2101 | else | |
2102 | ctx->num_commit_graphs_after = ctx->num_commit_graphs_before + 1; | |
1771be90 | 2103 | |
8a6ac287 TB |
2104 | if (flags != COMMIT_GRAPH_SPLIT_MERGE_PROHIBITED && |
2105 | flags != COMMIT_GRAPH_SPLIT_REPLACE) { | |
fdbde82f TB |
2106 | while (g && (g->num_commits <= size_mult * num_commits || |
2107 | (max_commits && num_commits > max_commits))) { | |
2108 | if (g->odb != ctx->odb) | |
2109 | break; | |
c523035c | 2110 | |
fdbde82f TB |
2111 | num_commits += g->num_commits; |
2112 | g = g->base_graph; | |
1771be90 | 2113 | |
fdbde82f TB |
2114 | ctx->num_commit_graphs_after--; |
2115 | } | |
1771be90 DS |
2116 | } |
2117 | ||
8a6ac287 TB |
2118 | if (flags != COMMIT_GRAPH_SPLIT_REPLACE) |
2119 | ctx->new_base_graph = g; | |
2120 | else if (ctx->num_commit_graphs_after != 1) | |
2121 | BUG("split_graph_merge_strategy: num_commit_graphs_after " | |
2122 | "should be 1 with --split=replace"); | |
1771be90 | 2123 | |
c523035c | 2124 | if (ctx->num_commit_graphs_after == 2) { |
ad2dd5bb | 2125 | char *old_graph_name = get_commit_graph_filename(g->odb); |
c523035c DS |
2126 | |
2127 | if (!strcmp(g->filename, old_graph_name) && | |
ad2dd5bb | 2128 | g->odb != ctx->odb) { |
c523035c DS |
2129 | ctx->num_commit_graphs_after = 1; |
2130 | ctx->new_base_graph = NULL; | |
2131 | } | |
2132 | ||
2133 | free(old_graph_name); | |
2134 | } | |
2135 | ||
b78a556a TB |
2136 | CALLOC_ARRAY(ctx->commit_graph_filenames_after, ctx->num_commit_graphs_after); |
2137 | CALLOC_ARRAY(ctx->commit_graph_hash_after, ctx->num_commit_graphs_after); | |
1771be90 DS |
2138 | |
2139 | for (i = 0; i < ctx->num_commit_graphs_after && | |
2140 | i < ctx->num_commit_graphs_before; i++) | |
2141 | ctx->commit_graph_filenames_after[i] = xstrdup(ctx->commit_graph_filenames_before[i]); | |
2142 | ||
2143 | i = ctx->num_commit_graphs_before - 1; | |
2144 | g = ctx->r->objects->commit_graph; | |
2145 | ||
2146 | while (g) { | |
2147 | if (i < ctx->num_commit_graphs_after) | |
2148 | ctx->commit_graph_hash_after[i] = xstrdup(oid_to_hex(&g->oid)); | |
2149 | ||
1fdc383c AK |
2150 | /* |
2151 | * If the topmost remaining layer has generation data chunk, the | |
2152 | * resultant layer also has generation data chunk. | |
2153 | */ | |
2154 | if (i == ctx->num_commit_graphs_after - 2) | |
2155 | ctx->write_generation_data = !!g->chunk_generation_data; | |
2156 | ||
1771be90 DS |
2157 | i--; |
2158 | g = g->base_graph; | |
2159 | } | |
2160 | } | |
2161 | ||
2162 | static void merge_commit_graph(struct write_commit_graph_context *ctx, | |
2163 | struct commit_graph *g) | |
2164 | { | |
2165 | uint32_t i; | |
2166 | uint32_t offset = g->num_commits_in_base; | |
2167 | ||
2168 | ALLOC_GROW(ctx->commits.list, ctx->commits.nr + g->num_commits, ctx->commits.alloc); | |
2169 | ||
2170 | for (i = 0; i < g->num_commits; i++) { | |
2171 | struct object_id oid; | |
2172 | struct commit *result; | |
2173 | ||
2174 | display_progress(ctx->progress, i + 1); | |
2175 | ||
2176 | load_oid_from_graph(g, i + offset, &oid); | |
2177 | ||
2178 | /* only add commits if they still exist in the repo */ | |
2179 | result = lookup_commit_reference_gently(ctx->r, &oid, 1); | |
2180 | ||
2181 | if (result) { | |
2182 | ctx->commits.list[ctx->commits.nr] = result; | |
2183 | ctx->commits.nr++; | |
2184 | } | |
2185 | } | |
2186 | } | |
2187 | ||
2188 | static int commit_compare(const void *_a, const void *_b) | |
2189 | { | |
2190 | const struct commit *a = *(const struct commit **)_a; | |
2191 | const struct commit *b = *(const struct commit **)_b; | |
2192 | return oidcmp(&a->object.oid, &b->object.oid); | |
2193 | } | |
2194 | ||
2195 | static void sort_and_scan_merged_commits(struct write_commit_graph_context *ctx) | |
2196 | { | |
150f1157 | 2197 | uint32_t i, dedup_i = 0; |
1771be90 DS |
2198 | |
2199 | if (ctx->report_progress) | |
2200 | ctx->progress = start_delayed_progress( | |
2201 | _("Scanning merged commits"), | |
2202 | ctx->commits.nr); | |
2203 | ||
2204 | QSORT(ctx->commits.list, ctx->commits.nr, commit_compare); | |
2205 | ||
2206 | ctx->num_extra_edges = 0; | |
2207 | for (i = 0; i < ctx->commits.nr; i++) { | |
40112249 | 2208 | display_progress(ctx->progress, i + 1); |
1771be90 DS |
2209 | |
2210 | if (i && oideq(&ctx->commits.list[i - 1]->object.oid, | |
2211 | &ctx->commits.list[i]->object.oid)) { | |
150f1157 DS |
2212 | /* |
2213 | * Silently ignore duplicates. These were likely | |
2214 | * created due to a commit appearing in multiple | |
2215 | * layers of the chain, which is unexpected but | |
2216 | * not invalid. We should make sure there is a | |
2217 | * unique copy in the new layer. | |
2218 | */ | |
1771be90 | 2219 | } else { |
689a146c | 2220 | unsigned int num_parents; |
1771be90 | 2221 | |
150f1157 DS |
2222 | ctx->commits.list[dedup_i] = ctx->commits.list[i]; |
2223 | dedup_i++; | |
2224 | ||
689a146c | 2225 | num_parents = commit_list_count(ctx->commits.list[i]->parents); |
1771be90 | 2226 | if (num_parents > 2) |
a35bea40 | 2227 | ctx->num_extra_edges += num_parents - 1; |
1771be90 DS |
2228 | } |
2229 | } | |
2230 | ||
150f1157 DS |
2231 | ctx->commits.nr = dedup_i; |
2232 | ||
1771be90 DS |
2233 | stop_progress(&ctx->progress); |
2234 | } | |
2235 | ||
2236 | static void merge_commit_graphs(struct write_commit_graph_context *ctx) | |
2237 | { | |
2238 | struct commit_graph *g = ctx->r->objects->commit_graph; | |
2239 | uint32_t current_graph_number = ctx->num_commit_graphs_before; | |
1771be90 DS |
2240 | |
2241 | while (g && current_graph_number >= ctx->num_commit_graphs_after) { | |
2242 | current_graph_number--; | |
2243 | ||
d68ce906 RS |
2244 | if (ctx->report_progress) |
2245 | ctx->progress = start_delayed_progress(_("Merging commit-graph"), 0); | |
1771be90 DS |
2246 | |
2247 | merge_commit_graph(ctx, g); | |
2248 | stop_progress(&ctx->progress); | |
1771be90 DS |
2249 | |
2250 | g = g->base_graph; | |
2251 | } | |
2252 | ||
2253 | if (g) { | |
2254 | ctx->new_base_graph = g; | |
2255 | ctx->new_num_commits_in_base = g->num_commits + g->num_commits_in_base; | |
2256 | } | |
2257 | ||
2258 | if (ctx->new_base_graph) | |
2259 | ctx->base_graph_name = xstrdup(ctx->new_base_graph->filename); | |
2260 | ||
2261 | sort_and_scan_merged_commits(ctx); | |
2262 | } | |
2263 | ||
8d84097f DS |
2264 | static void mark_commit_graphs(struct write_commit_graph_context *ctx) |
2265 | { | |
2266 | uint32_t i; | |
2267 | time_t now = time(NULL); | |
2268 | ||
2269 | for (i = ctx->num_commit_graphs_after - 1; i < ctx->num_commit_graphs_before; i++) { | |
2270 | struct stat st; | |
2271 | struct utimbuf updated_time; | |
2272 | ||
7c898554 ÆAB |
2273 | if (stat(ctx->commit_graph_filenames_before[i], &st) < 0) |
2274 | continue; | |
8d84097f DS |
2275 | |
2276 | updated_time.actime = st.st_atime; | |
2277 | updated_time.modtime = now; | |
2278 | utime(ctx->commit_graph_filenames_before[i], &updated_time); | |
2279 | } | |
2280 | } | |
2281 | ||
2282 | static void expire_commit_graphs(struct write_commit_graph_context *ctx) | |
2283 | { | |
2284 | struct strbuf path = STRBUF_INIT; | |
2285 | DIR *dir; | |
2286 | struct dirent *de; | |
2287 | size_t dirnamelen; | |
c2bc6e6a DS |
2288 | timestamp_t expire_time = time(NULL); |
2289 | ||
98bb7961 TB |
2290 | if (ctx->opts && ctx->opts->expire_time) |
2291 | expire_time = ctx->opts->expire_time; | |
ba41112a | 2292 | if (!ctx->split) { |
663b2b1b | 2293 | char *chain_file_name = get_commit_graph_chain_filename(ctx->odb); |
ba41112a DS |
2294 | unlink(chain_file_name); |
2295 | free(chain_file_name); | |
2296 | ctx->num_commit_graphs_after = 0; | |
2297 | } | |
8d84097f | 2298 | |
0bd52e27 | 2299 | strbuf_addstr(&path, ctx->odb->path); |
8d84097f DS |
2300 | strbuf_addstr(&path, "/info/commit-graphs"); |
2301 | dir = opendir(path.buf); | |
2302 | ||
0aa6bce7 RS |
2303 | if (!dir) |
2304 | goto out; | |
8d84097f DS |
2305 | |
2306 | strbuf_addch(&path, '/'); | |
2307 | dirnamelen = path.len; | |
2308 | while ((de = readdir(dir)) != NULL) { | |
2309 | struct stat st; | |
2310 | uint32_t i, found = 0; | |
2311 | ||
2312 | strbuf_setlen(&path, dirnamelen); | |
2313 | strbuf_addstr(&path, de->d_name); | |
2314 | ||
7c898554 ÆAB |
2315 | if (stat(path.buf, &st) < 0) |
2316 | continue; | |
8d84097f DS |
2317 | |
2318 | if (st.st_mtime > expire_time) | |
2319 | continue; | |
2320 | if (path.len < 6 || strcmp(path.buf + path.len - 6, ".graph")) | |
2321 | continue; | |
2322 | ||
2323 | for (i = 0; i < ctx->num_commit_graphs_after; i++) { | |
2324 | if (!strcmp(ctx->commit_graph_filenames_after[i], | |
2325 | path.buf)) { | |
2326 | found = 1; | |
2327 | break; | |
2328 | } | |
2329 | } | |
2330 | ||
2331 | if (!found) | |
2332 | unlink(path.buf); | |
8d84097f | 2333 | } |
0aa6bce7 RS |
2334 | |
2335 | out: | |
12f1ae53 ML |
2336 | if(dir) |
2337 | closedir(dir); | |
0aa6bce7 | 2338 | strbuf_release(&path); |
8d84097f DS |
2339 | } |
2340 | ||
0bd52e27 | 2341 | int write_commit_graph(struct object_directory *odb, |
4a047908 | 2342 | const struct string_list *const pack_indexes, |
6830c360 | 2343 | struct oidset *commits, |
39d88318 | 2344 | enum commit_graph_write_flags flags, |
98bb7961 | 2345 | const struct commit_graph_opts *opts) |
238def57 | 2346 | { |
c7ef8fe6 | 2347 | struct repository *r = the_repository; |
238def57 | 2348 | struct write_commit_graph_context *ctx; |
1cbdbf3b | 2349 | uint32_t i; |
e103f727 | 2350 | int res = 0; |
8a6ac287 | 2351 | int replace = 0; |
9a7a9ed1 | 2352 | struct bloom_filter_settings bloom_settings = DEFAULT_BLOOM_FILTER_SETTINGS; |
72a2bfca | 2353 | struct topo_level_slab topo_levels; |
08fd81c9 | 2354 | |
c7ef8fe6 DS |
2355 | prepare_repo_settings(r); |
2356 | if (!r->settings.core_commit_graph) { | |
85102ac7 DS |
2357 | warning(_("attempting to write a commit-graph, but 'core.commitGraph' is disabled")); |
2358 | return 0; | |
2359 | } | |
c7ef8fe6 | 2360 | if (!commit_graph_compatible(r)) |
e103f727 | 2361 | return 0; |
d6538246 | 2362 | |
ca56dadb | 2363 | CALLOC_ARRAY(ctx, 1); |
c7ef8fe6 | 2364 | ctx->r = r; |
0bd52e27 | 2365 | ctx->odb = odb; |
39d88318 SG |
2366 | ctx->append = flags & COMMIT_GRAPH_WRITE_APPEND ? 1 : 0; |
2367 | ctx->report_progress = flags & COMMIT_GRAPH_WRITE_PROGRESS ? 1 : 0; | |
2368 | ctx->split = flags & COMMIT_GRAPH_WRITE_SPLIT ? 1 : 0; | |
98bb7961 | 2369 | ctx->opts = opts; |
f97b9325 | 2370 | ctx->total_bloom_filter_data_size = 0; |
702110aa | 2371 | ctx->write_generation_data = (get_configured_generation_version(r) == 2); |
e8b63005 | 2372 | ctx->num_generation_data_overflows = 0; |
6c622f9f | 2373 | |
9a7a9ed1 TB |
2374 | bloom_settings.bits_per_entry = git_env_ulong("GIT_TEST_BLOOM_SETTINGS_BITS_PER_ENTRY", |
2375 | bloom_settings.bits_per_entry); | |
2376 | bloom_settings.num_hashes = git_env_ulong("GIT_TEST_BLOOM_SETTINGS_NUM_HASHES", | |
2377 | bloom_settings.num_hashes); | |
2378 | bloom_settings.max_changed_paths = git_env_ulong("GIT_TEST_BLOOM_SETTINGS_MAX_CHANGED_PATHS", | |
2379 | bloom_settings.max_changed_paths); | |
2380 | ctx->bloom_settings = &bloom_settings; | |
2381 | ||
72a2bfca AK |
2382 | init_topo_level_slab(&topo_levels); |
2383 | ctx->topo_levels = &topo_levels; | |
2384 | ||
bc50d6c9 | 2385 | prepare_commit_graph(ctx->r); |
72a2bfca AK |
2386 | if (ctx->r->objects->commit_graph) { |
2387 | struct commit_graph *g = ctx->r->objects->commit_graph; | |
2388 | ||
2389 | while (g) { | |
2390 | g->topo_levels = &topo_levels; | |
2391 | g = g->base_graph; | |
2392 | } | |
2393 | } | |
2394 | ||
0087a87b DS |
2395 | if (flags & COMMIT_GRAPH_WRITE_BLOOM_FILTERS) |
2396 | ctx->changed_paths = 1; | |
2397 | if (!(flags & COMMIT_GRAPH_NO_WRITE_BLOOM_FILTERS)) { | |
2398 | struct commit_graph *g; | |
0087a87b DS |
2399 | |
2400 | g = ctx->r->objects->commit_graph; | |
2401 | ||
2402 | /* We have changed-paths already. Keep them in the next graph */ | |
2403 | if (g && g->chunk_bloom_data) { | |
2404 | ctx->changed_paths = 1; | |
2405 | ctx->bloom_settings = g->bloom_filter_settings; | |
2406 | } | |
2407 | } | |
2408 | ||
6c622f9f | 2409 | if (ctx->split) { |
bc50d6c9 | 2410 | struct commit_graph *g = ctx->r->objects->commit_graph; |
6c622f9f DS |
2411 | |
2412 | while (g) { | |
2413 | ctx->num_commit_graphs_before++; | |
2414 | g = g->base_graph; | |
2415 | } | |
2416 | ||
2417 | if (ctx->num_commit_graphs_before) { | |
2418 | ALLOC_ARRAY(ctx->commit_graph_filenames_before, ctx->num_commit_graphs_before); | |
2419 | i = ctx->num_commit_graphs_before; | |
2420 | g = ctx->r->objects->commit_graph; | |
2421 | ||
2422 | while (g) { | |
2423 | ctx->commit_graph_filenames_before[--i] = xstrdup(g->filename); | |
2424 | g = g->base_graph; | |
2425 | } | |
2426 | } | |
8a6ac287 | 2427 | |
98bb7961 TB |
2428 | if (ctx->opts) |
2429 | replace = ctx->opts->split_flags & COMMIT_GRAPH_SPLIT_REPLACE; | |
6c622f9f | 2430 | } |
c9905bea | 2431 | |
afe27c88 | 2432 | ctx->approx_nr_objects = repo_approximate_object_count(the_repository); |
c9905bea | 2433 | |
c9905bea DS |
2434 | if (ctx->append && ctx->r->objects->commit_graph) { |
2435 | struct commit_graph *g = ctx->r->objects->commit_graph; | |
2436 | for (i = 0; i < g->num_commits; i++) { | |
a5f1c448 | 2437 | struct object_id oid; |
92e2cab9 | 2438 | oidread(&oid, g->chunk_oid_lookup + g->hash_len * i); |
a5f1c448 | 2439 | oid_array_append(&ctx->oids, &oid); |
7547b95b DS |
2440 | } |
2441 | } | |
2442 | ||
049d51a2 | 2443 | if (pack_indexes) { |
3d112755 | 2444 | ctx->order_by_pack = 1; |
ef5b83f2 DS |
2445 | if ((res = fill_oids_from_packs(ctx, pack_indexes))) |
2446 | goto cleanup; | |
3d5df01b DS |
2447 | } |
2448 | ||
6830c360 TB |
2449 | if (commits) { |
2450 | if ((res = fill_oids_from_commits(ctx, commits))) | |
7c5c9b9c SG |
2451 | goto cleanup; |
2452 | } | |
3d5df01b | 2453 | |
9b6606f4 | 2454 | if (!pack_indexes && !commits) { |
3d112755 | 2455 | ctx->order_by_pack = 1; |
b2c83060 | 2456 | fill_oids_from_all_packs(ctx); |
3d112755 | 2457 | } |
049d51a2 | 2458 | |
c9905bea | 2459 | close_reachable(ctx); |
08fd81c9 | 2460 | |
f998d542 | 2461 | copy_oids_to_commits(ctx); |
08fd81c9 | 2462 | |
c9905bea | 2463 | if (ctx->commits.nr >= GRAPH_EDGE_LAST_MASK) { |
e103f727 DS |
2464 | error(_("too many commits to write graph")); |
2465 | res = -1; | |
2466 | goto cleanup; | |
2467 | } | |
08fd81c9 | 2468 | |
8a6ac287 | 2469 | if (!ctx->commits.nr && !replace) |
6c622f9f DS |
2470 | goto cleanup; |
2471 | ||
1771be90 DS |
2472 | if (ctx->split) { |
2473 | split_graph_merge_strategy(ctx); | |
2474 | ||
8a6ac287 TB |
2475 | if (!replace) |
2476 | merge_commit_graphs(ctx); | |
1771be90 | 2477 | } else |
6c622f9f DS |
2478 | ctx->num_commit_graphs_after = 1; |
2479 | ||
fde55b09 | 2480 | ctx->trust_generation_numbers = validate_mixed_generation_chain(ctx->r->objects->commit_graph); |
1fdc383c | 2481 | |
9c2c0a82 DS |
2482 | compute_topological_levels(ctx); |
2483 | if (ctx->write_generation_data) | |
2484 | compute_generation_numbers(ctx); | |
08fd81c9 | 2485 | |
f97b9325 GS |
2486 | if (ctx->changed_paths) |
2487 | compute_bloom_filters(ctx); | |
2488 | ||
238def57 | 2489 | res = write_commit_graph_file(ctx); |
08fd81c9 | 2490 | |
ba41112a | 2491 | if (ctx->split) |
8d84097f | 2492 | mark_commit_graphs(ctx); |
ba41112a DS |
2493 | |
2494 | expire_commit_graphs(ctx); | |
8d84097f | 2495 | |
e103f727 | 2496 | cleanup: |
238def57 | 2497 | free(ctx->graph_name); |
c9905bea | 2498 | free(ctx->commits.list); |
a5f1c448 | 2499 | oid_array_clear(&ctx->oids); |
bf4bb9f9 | 2500 | clear_topo_level_slab(&topo_levels); |
6c622f9f DS |
2501 | |
2502 | if (ctx->commit_graph_filenames_after) { | |
2503 | for (i = 0; i < ctx->num_commit_graphs_after; i++) { | |
2504 | free(ctx->commit_graph_filenames_after[i]); | |
2505 | free(ctx->commit_graph_hash_after[i]); | |
2506 | } | |
2507 | ||
2508 | for (i = 0; i < ctx->num_commit_graphs_before; i++) | |
2509 | free(ctx->commit_graph_filenames_before[i]); | |
2510 | ||
2511 | free(ctx->commit_graph_filenames_after); | |
2512 | free(ctx->commit_graph_filenames_before); | |
2513 | free(ctx->commit_graph_hash_after); | |
2514 | } | |
2515 | ||
c9905bea | 2516 | free(ctx); |
e103f727 DS |
2517 | |
2518 | return res; | |
08fd81c9 | 2519 | } |
283e68c7 | 2520 | |
41df0e30 | 2521 | #define VERIFY_COMMIT_GRAPH_ERROR_HASH 2 |
283e68c7 DS |
2522 | static int verify_commit_graph_error; |
2523 | ||
48ca53ca | 2524 | __attribute__((format (printf, 1, 2))) |
283e68c7 DS |
2525 | static void graph_report(const char *fmt, ...) |
2526 | { | |
2527 | va_list ap; | |
2528 | ||
2529 | verify_commit_graph_error = 1; | |
2530 | va_start(ap, fmt); | |
2531 | vfprintf(stderr, fmt, ap); | |
2532 | fprintf(stderr, "\n"); | |
2533 | va_end(ap); | |
2534 | } | |
2535 | ||
1373e547 DS |
2536 | #define GENERATION_ZERO_EXISTS 1 |
2537 | #define GENERATION_NUMBER_EXISTS 2 | |
2538 | ||
15316a47 TB |
2539 | static int commit_graph_checksum_valid(struct commit_graph *g) |
2540 | { | |
2541 | return hashfile_checksum_valid(g->data, g->data_len); | |
2542 | } | |
2543 | ||
3da4b609 | 2544 | int verify_commit_graph(struct repository *r, struct commit_graph *g, int flags) |
283e68c7 | 2545 | { |
9bda8467 | 2546 | uint32_t i, cur_fanout_pos = 0; |
72871b13 | 2547 | struct object_id prev_oid, cur_oid; |
1373e547 | 2548 | int generation_zero = 0; |
1f7f557f | 2549 | struct progress *progress = NULL; |
3da4b609 | 2550 | int local_error = 0; |
9bda8467 | 2551 | |
283e68c7 DS |
2552 | if (!g) { |
2553 | graph_report("no commit-graph file loaded"); | |
2554 | return 1; | |
2555 | } | |
2556 | ||
2ac138d5 | 2557 | verify_commit_graph_error = verify_commit_graph_lite(g); |
9bda8467 DS |
2558 | if (verify_commit_graph_error) |
2559 | return verify_commit_graph_error; | |
2560 | ||
15316a47 | 2561 | if (!commit_graph_checksum_valid(g)) { |
41df0e30 DS |
2562 | graph_report(_("the commit-graph file has incorrect checksum and is likely corrupt")); |
2563 | verify_commit_graph_error = VERIFY_COMMIT_GRAPH_ERROR_HASH; | |
2564 | } | |
2565 | ||
9bda8467 | 2566 | for (i = 0; i < g->num_commits; i++) { |
2e3c0737 DS |
2567 | struct commit *graph_commit; |
2568 | ||
92e2cab9 | 2569 | oidread(&cur_oid, g->chunk_oid_lookup + g->hash_len * i); |
9bda8467 DS |
2570 | |
2571 | if (i && oidcmp(&prev_oid, &cur_oid) >= 0) | |
93b4405f | 2572 | graph_report(_("commit-graph has incorrect OID order: %s then %s"), |
9bda8467 DS |
2573 | oid_to_hex(&prev_oid), |
2574 | oid_to_hex(&cur_oid)); | |
2575 | ||
2576 | oidcpy(&prev_oid, &cur_oid); | |
2577 | ||
2578 | while (cur_oid.hash[0] > cur_fanout_pos) { | |
2579 | uint32_t fanout_value = get_be32(g->chunk_oid_fanout + cur_fanout_pos); | |
2580 | ||
2581 | if (i != fanout_value) | |
93b4405f | 2582 | graph_report(_("commit-graph has incorrect fanout value: fanout[%d] = %u != %u"), |
9bda8467 DS |
2583 | cur_fanout_pos, fanout_value, i); |
2584 | cur_fanout_pos++; | |
2585 | } | |
2e3c0737 | 2586 | |
82952964 | 2587 | graph_commit = lookup_commit(r, &cur_oid); |
4f542b7a | 2588 | if (!parse_commit_in_graph_one(r, g, graph_commit)) |
93b4405f | 2589 | graph_report(_("failed to parse commit %s from commit-graph"), |
2e3c0737 | 2590 | oid_to_hex(&cur_oid)); |
9bda8467 DS |
2591 | } |
2592 | ||
2593 | while (cur_fanout_pos < 256) { | |
2594 | uint32_t fanout_value = get_be32(g->chunk_oid_fanout + cur_fanout_pos); | |
2595 | ||
2596 | if (g->num_commits != fanout_value) | |
93b4405f | 2597 | graph_report(_("commit-graph has incorrect fanout value: fanout[%d] = %u != %u"), |
9bda8467 DS |
2598 | cur_fanout_pos, fanout_value, i); |
2599 | ||
2600 | cur_fanout_pos++; | |
2601 | } | |
2602 | ||
41df0e30 | 2603 | if (verify_commit_graph_error & ~VERIFY_COMMIT_GRAPH_ERROR_HASH) |
96af91d4 DS |
2604 | return verify_commit_graph_error; |
2605 | ||
73716122 GS |
2606 | if (flags & COMMIT_GRAPH_WRITE_PROGRESS) |
2607 | progress = start_progress(_("Verifying commits in commit graph"), | |
2608 | g->num_commits); | |
2609 | ||
96af91d4 | 2610 | for (i = 0; i < g->num_commits; i++) { |
2e3c0737 | 2611 | struct commit *graph_commit, *odb_commit; |
53614b13 | 2612 | struct commit_list *graph_parents, *odb_parents; |
d7f92784 AK |
2613 | timestamp_t max_generation = 0; |
2614 | timestamp_t generation; | |
96af91d4 | 2615 | |
1f7f557f | 2616 | display_progress(progress, i + 1); |
92e2cab9 | 2617 | oidread(&cur_oid, g->chunk_oid_lookup + g->hash_len * i); |
96af91d4 | 2618 | |
82952964 | 2619 | graph_commit = lookup_commit(r, &cur_oid); |
a378509e | 2620 | odb_commit = (struct commit *)create_object(r, &cur_oid, alloc_commit_node(r)); |
4a93b899 | 2621 | if (repo_parse_commit_internal(r, odb_commit, 0, 0)) { |
93b4405f | 2622 | graph_report(_("failed to parse commit %s from object database for commit-graph"), |
96af91d4 DS |
2623 | oid_to_hex(&cur_oid)); |
2624 | continue; | |
2625 | } | |
2e3c0737 | 2626 | |
4f542b7a | 2627 | if (!oideq(&get_commit_tree_in_graph_one(r, g, graph_commit)->object.oid, |
2e3c0737 | 2628 | get_commit_tree_oid(odb_commit))) |
93b4405f | 2629 | graph_report(_("root tree OID for commit %s in commit-graph is %s != %s"), |
2e3c0737 DS |
2630 | oid_to_hex(&cur_oid), |
2631 | oid_to_hex(get_commit_tree_oid(graph_commit)), | |
2632 | oid_to_hex(get_commit_tree_oid(odb_commit))); | |
53614b13 DS |
2633 | |
2634 | graph_parents = graph_commit->parents; | |
2635 | odb_parents = odb_commit->parents; | |
2636 | ||
2637 | while (graph_parents) { | |
afe8a907 | 2638 | if (!odb_parents) { |
93b4405f | 2639 | graph_report(_("commit-graph parent list for commit %s is too long"), |
53614b13 DS |
2640 | oid_to_hex(&cur_oid)); |
2641 | break; | |
2642 | } | |
2643 | ||
3da4b609 DS |
2644 | /* parse parent in case it is in a base graph */ |
2645 | parse_commit_in_graph_one(r, g, graph_parents->item); | |
2646 | ||
9001dc2a | 2647 | if (!oideq(&graph_parents->item->object.oid, &odb_parents->item->object.oid)) |
93b4405f | 2648 | graph_report(_("commit-graph parent for %s is %s != %s"), |
53614b13 DS |
2649 | oid_to_hex(&cur_oid), |
2650 | oid_to_hex(&graph_parents->item->object.oid), | |
2651 | oid_to_hex(&odb_parents->item->object.oid)); | |
2652 | ||
c752ad09 AK |
2653 | generation = commit_graph_generation(graph_parents->item); |
2654 | if (generation > max_generation) | |
2655 | max_generation = generation; | |
1373e547 | 2656 | |
53614b13 DS |
2657 | graph_parents = graph_parents->next; |
2658 | odb_parents = odb_parents->next; | |
2659 | } | |
2660 | ||
afe8a907 | 2661 | if (odb_parents) |
93b4405f | 2662 | graph_report(_("commit-graph parent list for commit %s terminates early"), |
53614b13 | 2663 | oid_to_hex(&cur_oid)); |
1373e547 | 2664 | |
c49c82aa | 2665 | if (!commit_graph_generation(graph_commit)) { |
1373e547 | 2666 | if (generation_zero == GENERATION_NUMBER_EXISTS) |
93b4405f | 2667 | graph_report(_("commit-graph has generation number zero for commit %s, but non-zero elsewhere"), |
1373e547 DS |
2668 | oid_to_hex(&cur_oid)); |
2669 | generation_zero = GENERATION_ZERO_EXISTS; | |
2670 | } else if (generation_zero == GENERATION_ZERO_EXISTS) | |
93b4405f | 2671 | graph_report(_("commit-graph has non-zero generation number for commit %s, but zero elsewhere"), |
1373e547 DS |
2672 | oid_to_hex(&cur_oid)); |
2673 | ||
2674 | if (generation_zero == GENERATION_ZERO_EXISTS) | |
2675 | continue; | |
2676 | ||
2677 | /* | |
e8b63005 AK |
2678 | * If we are using topological level and one of our parents has |
2679 | * generation GENERATION_NUMBER_V1_MAX, then our generation is | |
2680 | * also GENERATION_NUMBER_V1_MAX. Decrement to avoid extra logic | |
2681 | * in the following condition. | |
1373e547 | 2682 | */ |
1fdc383c | 2683 | if (!g->read_generation_data && max_generation == GENERATION_NUMBER_V1_MAX) |
1373e547 DS |
2684 | max_generation--; |
2685 | ||
c752ad09 | 2686 | generation = commit_graph_generation(graph_commit); |
e8b63005 AK |
2687 | if (generation < max_generation + 1) |
2688 | graph_report(_("commit-graph generation for commit %s is %"PRItime" < %"PRItime), | |
1373e547 | 2689 | oid_to_hex(&cur_oid), |
c752ad09 | 2690 | generation, |
1373e547 | 2691 | max_generation + 1); |
88968ebf DS |
2692 | |
2693 | if (graph_commit->date != odb_commit->date) | |
93b4405f | 2694 | graph_report(_("commit date for commit %s in commit-graph is %"PRItime" != %"PRItime), |
88968ebf DS |
2695 | oid_to_hex(&cur_oid), |
2696 | graph_commit->date, | |
2697 | odb_commit->date); | |
96af91d4 | 2698 | } |
1f7f557f | 2699 | stop_progress(&progress); |
96af91d4 | 2700 | |
3da4b609 DS |
2701 | local_error = verify_commit_graph_error; |
2702 | ||
2703 | if (!(flags & COMMIT_GRAPH_VERIFY_SHALLOW) && g->base_graph) | |
2704 | local_error |= verify_commit_graph(r, g->base_graph, flags); | |
2705 | ||
2706 | return local_error; | |
283e68c7 | 2707 | } |
c3756d5b JT |
2708 | |
2709 | void free_commit_graph(struct commit_graph *g) | |
2710 | { | |
2711 | if (!g) | |
2712 | return; | |
c8828530 | 2713 | if (g->data) { |
c3756d5b JT |
2714 | munmap((void *)g->data, g->data_len); |
2715 | g->data = NULL; | |
c3756d5b | 2716 | } |
6c622f9f | 2717 | free(g->filename); |
76ffbca7 | 2718 | free(g->bloom_filter_settings); |
c3756d5b JT |
2719 | free(g); |
2720 | } | |
6abada18 JK |
2721 | |
2722 | void disable_commit_graph(struct repository *r) | |
2723 | { | |
2724 | r->commit_graph_disabled = 1; | |
2725 | } |