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Commit | Line | Data |
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08fd81c9 | 1 | #include "git-compat-util.h" |
fa796530 | 2 | #include "config.h" |
08fd81c9 DS |
3 | #include "lockfile.h" |
4 | #include "pack.h" | |
5 | #include "packfile.h" | |
6 | #include "commit.h" | |
7 | #include "object.h" | |
59fb8770 | 8 | #include "refs.h" |
08fd81c9 | 9 | #include "revision.h" |
bc626927 | 10 | #include "hash-lookup.h" |
08fd81c9 | 11 | #include "commit-graph.h" |
b10edb2d | 12 | #include "object-store.h" |
96af91d4 | 13 | #include "alloc.h" |
d6538246 DS |
14 | #include "hashmap.h" |
15 | #include "replace-object.h" | |
7b0f2292 | 16 | #include "progress.h" |
f97b9325 | 17 | #include "bloom.h" |
d21ee7d1 | 18 | #include "commit-slab.h" |
120ad2b0 | 19 | #include "shallow.h" |
0087a87b DS |
20 | #include "json-writer.h" |
21 | #include "trace2.h" | |
47410aa8 | 22 | #include "chunk-format.h" |
08fd81c9 | 23 | |
b23ea979 DS |
24 | void git_test_write_commit_graph_or_die(void) |
25 | { | |
26 | int flags = 0; | |
27 | if (!git_env_bool(GIT_TEST_COMMIT_GRAPH, 0)) | |
28 | return; | |
29 | ||
30 | if (git_env_bool(GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS, 0)) | |
31 | flags = COMMIT_GRAPH_WRITE_BLOOM_FILTERS; | |
32 | ||
33 | if (write_commit_graph_reachable(the_repository->objects->odb, | |
34 | flags, NULL)) | |
35 | die("failed to write commit-graph under GIT_TEST_COMMIT_GRAPH"); | |
36 | } | |
37 | ||
08fd81c9 DS |
38 | #define GRAPH_SIGNATURE 0x43475048 /* "CGPH" */ |
39 | #define GRAPH_CHUNKID_OIDFANOUT 0x4f494446 /* "OIDF" */ | |
40 | #define GRAPH_CHUNKID_OIDLOOKUP 0x4f49444c /* "OIDL" */ | |
41 | #define GRAPH_CHUNKID_DATA 0x43444154 /* "CDAT" */ | |
e8b63005 AK |
42 | #define GRAPH_CHUNKID_GENERATION_DATA 0x47444154 /* "GDAT" */ |
43 | #define GRAPH_CHUNKID_GENERATION_DATA_OVERFLOW 0x47444f56 /* "GDOV" */ | |
5af7417b | 44 | #define GRAPH_CHUNKID_EXTRAEDGES 0x45444745 /* "EDGE" */ |
76ffbca7 GS |
45 | #define GRAPH_CHUNKID_BLOOMINDEXES 0x42494458 /* "BIDX" */ |
46 | #define GRAPH_CHUNKID_BLOOMDATA 0x42444154 /* "BDAT" */ | |
118bd570 | 47 | #define GRAPH_CHUNKID_BASE 0x42415345 /* "BASE" */ |
08fd81c9 | 48 | |
c1665998 | 49 | #define GRAPH_DATA_WIDTH (the_hash_algo->rawsz + 16) |
08fd81c9 DS |
50 | |
51 | #define GRAPH_VERSION_1 0x1 | |
52 | #define GRAPH_VERSION GRAPH_VERSION_1 | |
53 | ||
5af7417b | 54 | #define GRAPH_EXTRA_EDGES_NEEDED 0x80000000 |
08fd81c9 DS |
55 | #define GRAPH_EDGE_LAST_MASK 0x7fffffff |
56 | #define GRAPH_PARENT_NONE 0x70000000 | |
57 | ||
58 | #define GRAPH_LAST_EDGE 0x80000000 | |
59 | ||
0e3b97cc | 60 | #define GRAPH_HEADER_SIZE 8 |
08fd81c9 | 61 | #define GRAPH_FANOUT_SIZE (4 * 256) |
2692c2f6 | 62 | #define GRAPH_MIN_SIZE (GRAPH_HEADER_SIZE + 4 * CHUNK_TOC_ENTRY_SIZE \ |
c1665998 | 63 | + GRAPH_FANOUT_SIZE + the_hash_algo->rawsz) |
08fd81c9 | 64 | |
e8b63005 AK |
65 | #define CORRECTED_COMMIT_DATE_OFFSET_OVERFLOW (1ULL << 31) |
66 | ||
cb99a34e DS |
67 | /* Remember to update object flag allocation in object.h */ |
68 | #define REACHABLE (1u<<15) | |
69 | ||
72a2bfca AK |
70 | define_commit_slab(topo_level_slab, uint32_t); |
71 | ||
d21ee7d1 JK |
72 | /* Keep track of the order in which commits are added to our list. */ |
73 | define_commit_slab(commit_pos, int); | |
74 | static struct commit_pos commit_pos = COMMIT_SLAB_INIT(1, commit_pos); | |
75 | ||
76 | static void set_commit_pos(struct repository *r, const struct object_id *oid) | |
77 | { | |
78 | static int32_t max_pos; | |
79 | struct commit *commit = lookup_commit(r, oid); | |
80 | ||
81 | if (!commit) | |
82 | return; /* should never happen, but be lenient */ | |
83 | ||
84 | *commit_pos_at(&commit_pos, commit) = max_pos++; | |
85 | } | |
86 | ||
87 | static int commit_pos_cmp(const void *va, const void *vb) | |
08fd81c9 | 88 | { |
d21ee7d1 JK |
89 | const struct commit *a = *(const struct commit **)va; |
90 | const struct commit *b = *(const struct commit **)vb; | |
91 | return commit_pos_at(&commit_pos, a) - | |
92 | commit_pos_at(&commit_pos, b); | |
93 | } | |
94 | ||
4844812b AK |
95 | define_commit_slab(commit_graph_data_slab, struct commit_graph_data); |
96 | static struct commit_graph_data_slab commit_graph_data_slab = | |
97 | COMMIT_SLAB_INIT(1, commit_graph_data_slab); | |
98 | ||
702110aa DS |
99 | static int get_configured_generation_version(struct repository *r) |
100 | { | |
101 | int version = 2; | |
102 | repo_config_get_int(r, "commitgraph.generationversion", &version); | |
103 | return version; | |
104 | } | |
105 | ||
4844812b AK |
106 | uint32_t commit_graph_position(const struct commit *c) |
107 | { | |
108 | struct commit_graph_data *data = | |
109 | commit_graph_data_slab_peek(&commit_graph_data_slab, c); | |
110 | ||
111 | return data ? data->graph_pos : COMMIT_NOT_FROM_GRAPH; | |
112 | } | |
113 | ||
d7f92784 | 114 | timestamp_t commit_graph_generation(const struct commit *c) |
4844812b AK |
115 | { |
116 | struct commit_graph_data *data = | |
117 | commit_graph_data_slab_peek(&commit_graph_data_slab, c); | |
118 | ||
119 | if (!data) | |
120 | return GENERATION_NUMBER_INFINITY; | |
121 | else if (data->graph_pos == COMMIT_NOT_FROM_GRAPH) | |
122 | return GENERATION_NUMBER_INFINITY; | |
123 | ||
124 | return data->generation; | |
125 | } | |
126 | ||
127 | static struct commit_graph_data *commit_graph_data_at(const struct commit *c) | |
128 | { | |
129 | unsigned int i, nth_slab; | |
130 | struct commit_graph_data *data = | |
131 | commit_graph_data_slab_peek(&commit_graph_data_slab, c); | |
132 | ||
133 | if (data) | |
134 | return data; | |
135 | ||
136 | nth_slab = c->index / commit_graph_data_slab.slab_size; | |
137 | data = commit_graph_data_slab_at(&commit_graph_data_slab, c); | |
138 | ||
139 | /* | |
140 | * commit-slab initializes elements with zero, overwrite this with | |
141 | * COMMIT_NOT_FROM_GRAPH for graph_pos. | |
142 | * | |
143 | * We avoid initializing generation with checking if graph position | |
144 | * is not COMMIT_NOT_FROM_GRAPH. | |
145 | */ | |
146 | for (i = 0; i < commit_graph_data_slab.slab_size; i++) { | |
147 | commit_graph_data_slab.slab[nth_slab][i].graph_pos = | |
148 | COMMIT_NOT_FROM_GRAPH; | |
149 | } | |
150 | ||
151 | return data; | |
152 | } | |
153 | ||
e30c5ee7 AK |
154 | /* |
155 | * Should be used only while writing commit-graph as it compares | |
156 | * generation value of commits by directly accessing commit-slab. | |
157 | */ | |
3d112755 GS |
158 | static int commit_gen_cmp(const void *va, const void *vb) |
159 | { | |
160 | const struct commit *a = *(const struct commit **)va; | |
161 | const struct commit *b = *(const struct commit **)vb; | |
162 | ||
d7f92784 AK |
163 | const timestamp_t generation_a = commit_graph_data_at(a)->generation; |
164 | const timestamp_t generation_b = commit_graph_data_at(b)->generation; | |
3d112755 | 165 | /* lower generation commits first */ |
c752ad09 | 166 | if (generation_a < generation_b) |
3d112755 | 167 | return -1; |
c752ad09 | 168 | else if (generation_a > generation_b) |
3d112755 GS |
169 | return 1; |
170 | ||
171 | /* use date as a heuristic when generations are equal */ | |
172 | if (a->date < b->date) | |
173 | return -1; | |
174 | else if (a->date > b->date) | |
175 | return 1; | |
176 | return 0; | |
177 | } | |
178 | ||
d21ee7d1 | 179 | char *get_commit_graph_filename(struct object_directory *obj_dir) |
08fd81c9 | 180 | { |
d21ee7d1 | 181 | return xstrfmt("%s/info/commit-graph", obj_dir->path); |
08fd81c9 DS |
182 | } |
183 | ||
ad2dd5bb | 184 | static char *get_split_graph_filename(struct object_directory *odb, |
5c84b339 DS |
185 | const char *oid_hex) |
186 | { | |
ad2dd5bb TB |
187 | return xstrfmt("%s/info/commit-graphs/graph-%s.graph", odb->path, |
188 | oid_hex); | |
5c84b339 DS |
189 | } |
190 | ||
663b2b1b | 191 | char *get_commit_graph_chain_filename(struct object_directory *odb) |
5c84b339 | 192 | { |
ad2dd5bb | 193 | return xstrfmt("%s/info/commit-graphs/commit-graph-chain", odb->path); |
08fd81c9 DS |
194 | } |
195 | ||
c1665998 | 196 | static uint8_t oid_version(void) |
197 | { | |
665d70ad DS |
198 | switch (hash_algo_by_ptr(the_hash_algo)) { |
199 | case GIT_HASH_SHA1: | |
200 | return 1; | |
201 | case GIT_HASH_SHA256: | |
202 | return 2; | |
203 | default: | |
204 | die(_("invalid hash version")); | |
205 | } | |
c1665998 | 206 | } |
207 | ||
2a2e32bd DS |
208 | static struct commit_graph *alloc_commit_graph(void) |
209 | { | |
210 | struct commit_graph *g = xcalloc(1, sizeof(*g)); | |
2a2e32bd DS |
211 | |
212 | return g; | |
213 | } | |
214 | ||
d6538246 DS |
215 | extern int read_replace_refs; |
216 | ||
217 | static int commit_graph_compatible(struct repository *r) | |
218 | { | |
5cef295f DS |
219 | if (!r->gitdir) |
220 | return 0; | |
221 | ||
d6538246 DS |
222 | if (read_replace_refs) { |
223 | prepare_replace_object(r); | |
cdc986a7 | 224 | if (hashmap_get_size(&r->objects->replace_map->map)) |
d6538246 DS |
225 | return 0; |
226 | } | |
227 | ||
20fd6d57 | 228 | prepare_commit_graft(r); |
ce16364e | 229 | if (r->parsed_objects && |
cdc986a7 | 230 | (r->parsed_objects->grafts_nr || r->parsed_objects->substituted_parent)) |
20fd6d57 | 231 | return 0; |
cdc986a7 | 232 | if (is_repository_shallow(r)) |
20fd6d57 DS |
233 | return 0; |
234 | ||
d6538246 DS |
235 | return 1; |
236 | } | |
237 | ||
61df89c8 ÆAB |
238 | int open_commit_graph(const char *graph_file, int *fd, struct stat *st) |
239 | { | |
240 | *fd = git_open(graph_file); | |
241 | if (*fd < 0) | |
242 | return 0; | |
243 | if (fstat(*fd, st)) { | |
244 | close(*fd); | |
245 | return 0; | |
246 | } | |
247 | return 1; | |
248 | } | |
249 | ||
ab14d067 TB |
250 | struct commit_graph *load_commit_graph_one_fd_st(struct repository *r, |
251 | int fd, struct stat *st, | |
a7df60ca | 252 | struct object_directory *odb) |
2a2e32bd DS |
253 | { |
254 | void *graph_map; | |
2a2e32bd | 255 | size_t graph_size; |
aa658574 | 256 | struct commit_graph *ret; |
2a2e32bd | 257 | |
61df89c8 | 258 | graph_size = xsize_t(st->st_size); |
2a2e32bd DS |
259 | |
260 | if (graph_size < GRAPH_MIN_SIZE) { | |
261 | close(fd); | |
67a530fa | 262 | error(_("commit-graph file is too small")); |
61df89c8 | 263 | return NULL; |
2a2e32bd DS |
264 | } |
265 | graph_map = xmmap(NULL, graph_size, PROT_READ, MAP_PRIVATE, fd, 0); | |
c8828530 | 266 | close(fd); |
ab14d067 | 267 | ret = parse_commit_graph(r, graph_map, graph_size); |
aa658574 | 268 | |
a7df60ca TB |
269 | if (ret) |
270 | ret->odb = odb; | |
c8828530 | 271 | else |
aa658574 | 272 | munmap(graph_map, graph_size); |
aa658574 JS |
273 | |
274 | return ret; | |
275 | } | |
276 | ||
2ac138d5 ÆAB |
277 | static int verify_commit_graph_lite(struct commit_graph *g) |
278 | { | |
279 | /* | |
280 | * Basic validation shared between parse_commit_graph() | |
281 | * which'll be called every time the graph is used, and the | |
282 | * much more expensive verify_commit_graph() used by | |
283 | * "commit-graph verify". | |
284 | * | |
285 | * There should only be very basic checks here to ensure that | |
286 | * we don't e.g. segfault in fill_commit_in_graph(), but | |
287 | * because this is a very hot codepath nothing that e.g. loops | |
288 | * over g->num_commits, or runs a checksum on the commit-graph | |
289 | * itself. | |
290 | */ | |
291 | if (!g->chunk_oid_fanout) { | |
292 | error("commit-graph is missing the OID Fanout chunk"); | |
293 | return 1; | |
294 | } | |
295 | if (!g->chunk_oid_lookup) { | |
296 | error("commit-graph is missing the OID Lookup chunk"); | |
297 | return 1; | |
298 | } | |
299 | if (!g->chunk_commit_data) { | |
300 | error("commit-graph is missing the Commit Data chunk"); | |
301 | return 1; | |
302 | } | |
303 | ||
304 | return 0; | |
305 | } | |
306 | ||
2692c2f6 DS |
307 | static int graph_read_oid_lookup(const unsigned char *chunk_start, |
308 | size_t chunk_size, void *data) | |
309 | { | |
310 | struct commit_graph *g = data; | |
311 | g->chunk_oid_lookup = chunk_start; | |
312 | g->num_commits = chunk_size / g->hash_len; | |
313 | return 0; | |
314 | } | |
315 | ||
316 | static int graph_read_bloom_data(const unsigned char *chunk_start, | |
317 | size_t chunk_size, void *data) | |
318 | { | |
319 | struct commit_graph *g = data; | |
320 | uint32_t hash_version; | |
321 | g->chunk_bloom_data = chunk_start; | |
322 | hash_version = get_be32(chunk_start); | |
323 | ||
324 | if (hash_version != 1) | |
325 | return 0; | |
326 | ||
327 | g->bloom_filter_settings = xmalloc(sizeof(struct bloom_filter_settings)); | |
328 | g->bloom_filter_settings->hash_version = hash_version; | |
329 | g->bloom_filter_settings->num_hashes = get_be32(chunk_start + 4); | |
330 | g->bloom_filter_settings->bits_per_entry = get_be32(chunk_start + 8); | |
331 | g->bloom_filter_settings->max_changed_paths = DEFAULT_BLOOM_MAX_CHANGES; | |
332 | ||
333 | return 0; | |
334 | } | |
335 | ||
ab14d067 TB |
336 | struct commit_graph *parse_commit_graph(struct repository *r, |
337 | void *graph_map, size_t graph_size) | |
aa658574 | 338 | { |
2692c2f6 | 339 | const unsigned char *data; |
aa658574 | 340 | struct commit_graph *graph; |
aa658574 JS |
341 | uint32_t graph_signature; |
342 | unsigned char graph_version, hash_version; | |
2692c2f6 | 343 | struct chunkfile *cf = NULL; |
aa658574 JS |
344 | |
345 | if (!graph_map) | |
346 | return NULL; | |
347 | ||
348 | if (graph_size < GRAPH_MIN_SIZE) | |
349 | return NULL; | |
350 | ||
2a2e32bd DS |
351 | data = (const unsigned char *)graph_map; |
352 | ||
353 | graph_signature = get_be32(data); | |
354 | if (graph_signature != GRAPH_SIGNATURE) { | |
93b4405f | 355 | error(_("commit-graph signature %X does not match signature %X"), |
2a2e32bd | 356 | graph_signature, GRAPH_SIGNATURE); |
aa658574 | 357 | return NULL; |
2a2e32bd DS |
358 | } |
359 | ||
360 | graph_version = *(unsigned char*)(data + 4); | |
361 | if (graph_version != GRAPH_VERSION) { | |
93b4405f | 362 | error(_("commit-graph version %X does not match version %X"), |
2a2e32bd | 363 | graph_version, GRAPH_VERSION); |
aa658574 | 364 | return NULL; |
2a2e32bd DS |
365 | } |
366 | ||
367 | hash_version = *(unsigned char*)(data + 5); | |
c1665998 | 368 | if (hash_version != oid_version()) { |
93b4405f | 369 | error(_("commit-graph hash version %X does not match version %X"), |
c1665998 | 370 | hash_version, oid_version()); |
aa658574 | 371 | return NULL; |
2a2e32bd DS |
372 | } |
373 | ||
b66d8475 TB |
374 | prepare_repo_settings(r); |
375 | ||
2a2e32bd DS |
376 | graph = alloc_commit_graph(); |
377 | ||
c1665998 | 378 | graph->hash_len = the_hash_algo->rawsz; |
2a2e32bd | 379 | graph->num_chunks = *(unsigned char*)(data + 6); |
2a2e32bd DS |
380 | graph->data = graph_map; |
381 | graph->data_len = graph_size; | |
382 | ||
2ad4f1a7 | 383 | if (graph_size < GRAPH_HEADER_SIZE + |
2692c2f6 | 384 | (graph->num_chunks + 1) * CHUNK_TOC_ENTRY_SIZE + |
2ad4f1a7 SG |
385 | GRAPH_FANOUT_SIZE + the_hash_algo->rawsz) { |
386 | error(_("commit-graph file is too small to hold %u chunks"), | |
387 | graph->num_chunks); | |
388 | free(graph); | |
389 | return NULL; | |
390 | } | |
391 | ||
2692c2f6 | 392 | cf = init_chunkfile(NULL); |
118bd570 | 393 | |
2692c2f6 DS |
394 | if (read_table_of_contents(cf, graph->data, graph_size, |
395 | GRAPH_HEADER_SIZE, graph->num_chunks)) | |
396 | goto free_and_return; | |
2a2e32bd | 397 | |
2692c2f6 DS |
398 | pair_chunk(cf, GRAPH_CHUNKID_OIDFANOUT, |
399 | (const unsigned char **)&graph->chunk_oid_fanout); | |
400 | read_chunk(cf, GRAPH_CHUNKID_OIDLOOKUP, graph_read_oid_lookup, graph); | |
401 | pair_chunk(cf, GRAPH_CHUNKID_DATA, &graph->chunk_commit_data); | |
402 | pair_chunk(cf, GRAPH_CHUNKID_EXTRAEDGES, &graph->chunk_extra_edges); | |
403 | pair_chunk(cf, GRAPH_CHUNKID_BASE, &graph->chunk_base_graphs); | |
702110aa DS |
404 | |
405 | if (get_configured_generation_version(r) >= 2) { | |
406 | pair_chunk(cf, GRAPH_CHUNKID_GENERATION_DATA, | |
407 | &graph->chunk_generation_data); | |
408 | pair_chunk(cf, GRAPH_CHUNKID_GENERATION_DATA_OVERFLOW, | |
409 | &graph->chunk_generation_data_overflow); | |
410 | } | |
2692c2f6 DS |
411 | |
412 | if (r->settings.commit_graph_read_changed_paths) { | |
413 | pair_chunk(cf, GRAPH_CHUNKID_BLOOMINDEXES, | |
414 | &graph->chunk_bloom_indexes); | |
415 | read_chunk(cf, GRAPH_CHUNKID_BLOOMDATA, | |
416 | graph_read_bloom_data, graph); | |
2a2e32bd DS |
417 | } |
418 | ||
76ffbca7 GS |
419 | if (graph->chunk_bloom_indexes && graph->chunk_bloom_data) { |
420 | init_bloom_filters(); | |
421 | } else { | |
422 | /* We need both the bloom chunks to exist together. Else ignore the data */ | |
423 | graph->chunk_bloom_indexes = NULL; | |
424 | graph->chunk_bloom_data = NULL; | |
fbda77c6 | 425 | FREE_AND_NULL(graph->bloom_filter_settings); |
76ffbca7 GS |
426 | } |
427 | ||
92e2cab9 | 428 | oidread(&graph->oid, graph->data + graph->data_len - graph->hash_len); |
118bd570 | 429 | |
fbda77c6 JT |
430 | if (verify_commit_graph_lite(graph)) |
431 | goto free_and_return; | |
2ac138d5 | 432 | |
2692c2f6 | 433 | free_chunkfile(cf); |
2a2e32bd | 434 | return graph; |
fbda77c6 JT |
435 | |
436 | free_and_return: | |
2692c2f6 | 437 | free_chunkfile(cf); |
fbda77c6 JT |
438 | free(graph->bloom_filter_settings); |
439 | free(graph); | |
440 | return NULL; | |
2a2e32bd DS |
441 | } |
442 | ||
ab14d067 TB |
443 | static struct commit_graph *load_commit_graph_one(struct repository *r, |
444 | const char *graph_file, | |
a7df60ca | 445 | struct object_directory *odb) |
61df89c8 ÆAB |
446 | { |
447 | ||
448 | struct stat st; | |
449 | int fd; | |
6c622f9f | 450 | struct commit_graph *g; |
61df89c8 ÆAB |
451 | int open_ok = open_commit_graph(graph_file, &fd, &st); |
452 | ||
453 | if (!open_ok) | |
454 | return NULL; | |
455 | ||
ab14d067 | 456 | g = load_commit_graph_one_fd_st(r, fd, &st, odb); |
6c622f9f DS |
457 | |
458 | if (g) | |
459 | g->filename = xstrdup(graph_file); | |
460 | ||
461 | return g; | |
61df89c8 ÆAB |
462 | } |
463 | ||
13c24992 TB |
464 | static struct commit_graph *load_commit_graph_v1(struct repository *r, |
465 | struct object_directory *odb) | |
5c84b339 | 466 | { |
ad2dd5bb | 467 | char *graph_name = get_commit_graph_filename(odb); |
ab14d067 | 468 | struct commit_graph *g = load_commit_graph_one(r, graph_name, odb); |
5c84b339 DS |
469 | free(graph_name); |
470 | ||
471 | return g; | |
472 | } | |
473 | ||
474 | static int add_graph_to_chain(struct commit_graph *g, | |
475 | struct commit_graph *chain, | |
476 | struct object_id *oids, | |
477 | int n) | |
478 | { | |
479 | struct commit_graph *cur_g = chain; | |
480 | ||
118bd570 DS |
481 | if (n && !g->chunk_base_graphs) { |
482 | warning(_("commit-graph has no base graphs chunk")); | |
483 | return 0; | |
484 | } | |
485 | ||
5c84b339 DS |
486 | while (n) { |
487 | n--; | |
118bd570 DS |
488 | |
489 | if (!cur_g || | |
490 | !oideq(&oids[n], &cur_g->oid) || | |
491 | !hasheq(oids[n].hash, g->chunk_base_graphs + g->hash_len * n)) { | |
492 | warning(_("commit-graph chain does not match")); | |
493 | return 0; | |
494 | } | |
495 | ||
5c84b339 DS |
496 | cur_g = cur_g->base_graph; |
497 | } | |
498 | ||
499 | g->base_graph = chain; | |
500 | ||
501 | if (chain) | |
502 | g->num_commits_in_base = chain->num_commits + chain->num_commits_in_base; | |
503 | ||
504 | return 1; | |
505 | } | |
506 | ||
13c24992 TB |
507 | static struct commit_graph *load_commit_graph_chain(struct repository *r, |
508 | struct object_directory *odb) | |
5c84b339 DS |
509 | { |
510 | struct commit_graph *graph_chain = NULL; | |
511 | struct strbuf line = STRBUF_INIT; | |
512 | struct stat st; | |
513 | struct object_id *oids; | |
514 | int i = 0, valid = 1, count; | |
663b2b1b | 515 | char *chain_name = get_commit_graph_chain_filename(odb); |
5c84b339 DS |
516 | FILE *fp; |
517 | int stat_res; | |
518 | ||
519 | fp = fopen(chain_name, "r"); | |
520 | stat_res = stat(chain_name, &st); | |
521 | free(chain_name); | |
522 | ||
523 | if (!fp || | |
524 | stat_res || | |
525 | st.st_size <= the_hash_algo->hexsz) | |
526 | return NULL; | |
527 | ||
528 | count = st.st_size / (the_hash_algo->hexsz + 1); | |
ca56dadb | 529 | CALLOC_ARRAY(oids, count); |
5c84b339 | 530 | |
c523035c DS |
531 | prepare_alt_odb(r); |
532 | ||
533 | for (i = 0; i < count; i++) { | |
534 | struct object_directory *odb; | |
5c84b339 DS |
535 | |
536 | if (strbuf_getline_lf(&line, fp) == EOF) | |
537 | break; | |
538 | ||
539 | if (get_oid_hex(line.buf, &oids[i])) { | |
540 | warning(_("invalid commit-graph chain: line '%s' not a hash"), | |
541 | line.buf); | |
542 | valid = 0; | |
543 | break; | |
544 | } | |
545 | ||
c523035c DS |
546 | valid = 0; |
547 | for (odb = r->objects->odb; odb; odb = odb->next) { | |
ad2dd5bb | 548 | char *graph_name = get_split_graph_filename(odb, line.buf); |
ab14d067 | 549 | struct commit_graph *g = load_commit_graph_one(r, graph_name, odb); |
5c84b339 | 550 | |
c523035c DS |
551 | free(graph_name); |
552 | ||
553 | if (g) { | |
c523035c DS |
554 | if (add_graph_to_chain(g, graph_chain, oids, i)) { |
555 | graph_chain = g; | |
556 | valid = 1; | |
557 | } | |
558 | ||
559 | break; | |
560 | } | |
561 | } | |
562 | ||
563 | if (!valid) { | |
564 | warning(_("unable to find all commit-graph files")); | |
565 | break; | |
566 | } | |
5c84b339 DS |
567 | } |
568 | ||
569 | free(oids); | |
570 | fclose(fp); | |
0aa6bce7 | 571 | strbuf_release(&line); |
5c84b339 DS |
572 | |
573 | return graph_chain; | |
574 | } | |
575 | ||
448a39e6 DS |
576 | /* |
577 | * returns 1 if and only if all graphs in the chain have | |
578 | * corrected commit dates stored in the generation_data chunk. | |
579 | */ | |
580 | static int validate_mixed_generation_chain(struct commit_graph *g) | |
1fdc383c | 581 | { |
448a39e6 DS |
582 | int read_generation_data = 1; |
583 | struct commit_graph *p = g; | |
1fdc383c | 584 | |
448a39e6 DS |
585 | while (read_generation_data && p) { |
586 | read_generation_data = p->read_generation_data; | |
587 | p = p->base_graph; | |
588 | } | |
1fdc383c | 589 | |
448a39e6 DS |
590 | if (read_generation_data) |
591 | return 1; | |
1fdc383c AK |
592 | |
593 | while (g) { | |
448a39e6 | 594 | g->read_generation_data = 0; |
1fdc383c AK |
595 | g = g->base_graph; |
596 | } | |
448a39e6 DS |
597 | |
598 | return 0; | |
1fdc383c AK |
599 | } |
600 | ||
13c24992 TB |
601 | struct commit_graph *read_commit_graph_one(struct repository *r, |
602 | struct object_directory *odb) | |
5c84b339 | 603 | { |
13c24992 | 604 | struct commit_graph *g = load_commit_graph_v1(r, odb); |
5c84b339 DS |
605 | |
606 | if (!g) | |
13c24992 | 607 | g = load_commit_graph_chain(r, odb); |
5c84b339 | 608 | |
1fdc383c AK |
609 | validate_mixed_generation_chain(g); |
610 | ||
5c84b339 | 611 | return g; |
61df89c8 ÆAB |
612 | } |
613 | ||
13c24992 TB |
614 | static void prepare_commit_graph_one(struct repository *r, |
615 | struct object_directory *odb) | |
177722b3 | 616 | { |
177722b3 | 617 | |
dade47c0 | 618 | if (r->objects->commit_graph) |
177722b3 DS |
619 | return; |
620 | ||
13c24992 | 621 | r->objects->commit_graph = read_commit_graph_one(r, odb); |
177722b3 DS |
622 | } |
623 | ||
5faf357b JT |
624 | /* |
625 | * Return 1 if commit_graph is non-NULL, and 0 otherwise. | |
626 | * | |
15beaaa3 | 627 | * On the first invocation, this function attempts to load the commit |
5faf357b JT |
628 | * graph if the_repository is configured to have one. |
629 | */ | |
dade47c0 | 630 | static int prepare_commit_graph(struct repository *r) |
177722b3 | 631 | { |
263db403 | 632 | struct object_directory *odb; |
dade47c0 | 633 | |
6abada18 | 634 | /* |
0803f9c7 LD |
635 | * Early return if there is no git dir or if the commit graph is |
636 | * disabled. | |
637 | * | |
6abada18 JK |
638 | * This must come before the "already attempted?" check below, because |
639 | * we want to disable even an already-loaded graph file. | |
640 | */ | |
0803f9c7 | 641 | if (!r->gitdir || r->commit_graph_disabled) |
6abada18 | 642 | return 0; |
43d35618 | 643 | |
dade47c0 JT |
644 | if (r->objects->commit_graph_attempted) |
645 | return !!r->objects->commit_graph; | |
646 | r->objects->commit_graph_attempted = 1; | |
647 | ||
7211b9e7 DS |
648 | prepare_repo_settings(r); |
649 | ||
859fdc0c | 650 | if (!git_env_bool(GIT_TEST_COMMIT_GRAPH, 0) && |
7211b9e7 | 651 | r->settings.core_commit_graph != 1) |
dade47c0 JT |
652 | /* |
653 | * This repository is not configured to use commit graphs, so | |
654 | * do not load one. (But report commit_graph_attempted anyway | |
655 | * so that commit graph loading is not attempted again for this | |
656 | * repository.) | |
657 | */ | |
5faf357b JT |
658 | return 0; |
659 | ||
d6538246 DS |
660 | if (!commit_graph_compatible(r)) |
661 | return 0; | |
662 | ||
dade47c0 | 663 | prepare_alt_odb(r); |
f0eaf638 | 664 | for (odb = r->objects->odb; |
263db403 JK |
665 | !r->objects->commit_graph && odb; |
666 | odb = odb->next) | |
13c24992 | 667 | prepare_commit_graph_one(r, odb); |
dade47c0 | 668 | return !!r->objects->commit_graph; |
177722b3 DS |
669 | } |
670 | ||
6cc01743 DS |
671 | int generation_numbers_enabled(struct repository *r) |
672 | { | |
673 | uint32_t first_generation; | |
674 | struct commit_graph *g; | |
675 | if (!prepare_commit_graph(r)) | |
676 | return 0; | |
677 | ||
678 | g = r->objects->commit_graph; | |
679 | ||
680 | if (!g->num_commits) | |
681 | return 0; | |
682 | ||
683 | first_generation = get_be32(g->chunk_commit_data + | |
684 | g->hash_len + 8) >> 2; | |
685 | ||
686 | return !!first_generation; | |
687 | } | |
688 | ||
8d00d7c3 AK |
689 | int corrected_commit_dates_enabled(struct repository *r) |
690 | { | |
691 | struct commit_graph *g; | |
692 | if (!prepare_commit_graph(r)) | |
693 | return 0; | |
694 | ||
695 | g = r->objects->commit_graph; | |
696 | ||
697 | if (!g->num_commits) | |
698 | return 0; | |
699 | ||
700 | return g->read_generation_data; | |
701 | } | |
702 | ||
4f364405 TB |
703 | struct bloom_filter_settings *get_bloom_filter_settings(struct repository *r) |
704 | { | |
705 | struct commit_graph *g = r->objects->commit_graph; | |
706 | while (g) { | |
707 | if (g->bloom_filter_settings) | |
708 | return g->bloom_filter_settings; | |
709 | g = g->base_graph; | |
710 | } | |
711 | return NULL; | |
712 | } | |
713 | ||
d4f4d60f DS |
714 | static void close_commit_graph_one(struct commit_graph *g) |
715 | { | |
716 | if (!g) | |
717 | return; | |
718 | ||
957ba814 | 719 | clear_commit_graph_data_slab(&commit_graph_data_slab); |
d4f4d60f DS |
720 | close_commit_graph_one(g->base_graph); |
721 | free_commit_graph(g); | |
722 | } | |
723 | ||
c3a3a964 | 724 | void close_commit_graph(struct raw_object_store *o) |
177722b3 | 725 | { |
d4f4d60f | 726 | close_commit_graph_one(o->commit_graph); |
c3a3a964 | 727 | o->commit_graph = NULL; |
177722b3 DS |
728 | } |
729 | ||
809ea28f | 730 | static int bsearch_graph(struct commit_graph *g, const struct object_id *oid, uint32_t *pos) |
177722b3 DS |
731 | { |
732 | return bsearch_hash(oid->hash, g->chunk_oid_fanout, | |
733 | g->chunk_oid_lookup, g->hash_len, pos); | |
734 | } | |
735 | ||
d4f4d60f DS |
736 | static void load_oid_from_graph(struct commit_graph *g, |
737 | uint32_t pos, | |
738 | struct object_id *oid) | |
739 | { | |
740 | uint32_t lex_index; | |
741 | ||
742 | while (g && pos < g->num_commits_in_base) | |
743 | g = g->base_graph; | |
744 | ||
745 | if (!g) | |
746 | BUG("NULL commit-graph"); | |
747 | ||
748 | if (pos >= g->num_commits + g->num_commits_in_base) | |
749 | die(_("invalid commit position. commit-graph is likely corrupt")); | |
750 | ||
751 | lex_index = pos - g->num_commits_in_base; | |
752 | ||
92e2cab9 | 753 | oidread(oid, g->chunk_oid_lookup + g->hash_len * lex_index); |
d4f4d60f DS |
754 | } |
755 | ||
4f542b7a SB |
756 | static struct commit_list **insert_parent_or_die(struct repository *r, |
757 | struct commit_graph *g, | |
d4f4d60f | 758 | uint32_t pos, |
177722b3 DS |
759 | struct commit_list **pptr) |
760 | { | |
761 | struct commit *c; | |
762 | struct object_id oid; | |
96af91d4 | 763 | |
d4f4d60f DS |
764 | if (pos >= g->num_commits + g->num_commits_in_base) |
765 | die("invalid parent position %"PRIu32, pos); | |
53614b13 | 766 | |
d4f4d60f | 767 | load_oid_from_graph(g, pos, &oid); |
4f542b7a | 768 | c = lookup_commit(r, &oid); |
177722b3 | 769 | if (!c) |
4f5b532d | 770 | die(_("could not find commit %s"), oid_to_hex(&oid)); |
c49c82aa | 771 | commit_graph_data_at(c)->graph_pos = pos; |
177722b3 DS |
772 | return &commit_list_insert(c, pptr)->next; |
773 | } | |
774 | ||
e2838d85 DS |
775 | static void fill_commit_graph_info(struct commit *item, struct commit_graph *g, uint32_t pos) |
776 | { | |
d4f4d60f | 777 | const unsigned char *commit_data; |
c752ad09 | 778 | struct commit_graph_data *graph_data; |
e8b63005 AK |
779 | uint32_t lex_index, offset_pos; |
780 | uint64_t date_high, date_low, offset; | |
d4f4d60f DS |
781 | |
782 | while (pos < g->num_commits_in_base) | |
783 | g = g->base_graph; | |
784 | ||
f90fca63 AK |
785 | if (pos >= g->num_commits + g->num_commits_in_base) |
786 | die(_("invalid commit position. commit-graph is likely corrupt")); | |
787 | ||
d4f4d60f DS |
788 | lex_index = pos - g->num_commits_in_base; |
789 | commit_data = g->chunk_commit_data + GRAPH_DATA_WIDTH * lex_index; | |
c752ad09 AK |
790 | |
791 | graph_data = commit_graph_data_at(item); | |
792 | graph_data->graph_pos = pos; | |
f90fca63 AK |
793 | |
794 | date_high = get_be32(commit_data + g->hash_len + 8) & 0x3; | |
795 | date_low = get_be32(commit_data + g->hash_len + 12); | |
796 | item->date = (timestamp_t)((date_high << 32) | date_low); | |
797 | ||
1fdc383c | 798 | if (g->read_generation_data) { |
e8b63005 AK |
799 | offset = (timestamp_t)get_be32(g->chunk_generation_data + sizeof(uint32_t) * lex_index); |
800 | ||
801 | if (offset & CORRECTED_COMMIT_DATE_OFFSET_OVERFLOW) { | |
802 | if (!g->chunk_generation_data_overflow) | |
803 | die(_("commit-graph requires overflow generation data but has none")); | |
804 | ||
805 | offset_pos = offset ^ CORRECTED_COMMIT_DATE_OFFSET_OVERFLOW; | |
806 | graph_data->generation = get_be64(g->chunk_generation_data_overflow + 8 * offset_pos); | |
807 | } else | |
808 | graph_data->generation = item->date + offset; | |
809 | } else | |
810 | graph_data->generation = get_be32(commit_data + g->hash_len + 8) >> 2; | |
72a2bfca AK |
811 | |
812 | if (g->topo_levels) | |
813 | *topo_level_slab_at(g->topo_levels, item) = get_be32(commit_data + g->hash_len + 8) >> 2; | |
e2838d85 DS |
814 | } |
815 | ||
a133c40b NTND |
816 | static inline void set_commit_tree(struct commit *c, struct tree *t) |
817 | { | |
818 | c->maybe_tree = t; | |
819 | } | |
820 | ||
4f542b7a SB |
821 | static int fill_commit_in_graph(struct repository *r, |
822 | struct commit *item, | |
823 | struct commit_graph *g, uint32_t pos) | |
177722b3 | 824 | { |
177722b3 DS |
825 | uint32_t edge_value; |
826 | uint32_t *parent_data_ptr; | |
177722b3 | 827 | struct commit_list **pptr; |
d4f4d60f DS |
828 | const unsigned char *commit_data; |
829 | uint32_t lex_index; | |
177722b3 | 830 | |
d4f4d60f DS |
831 | while (pos < g->num_commits_in_base) |
832 | g = g->base_graph; | |
833 | ||
f90fca63 | 834 | fill_commit_graph_info(item, g, pos); |
d4f4d60f | 835 | |
d4f4d60f | 836 | lex_index = pos - g->num_commits_in_base; |
d4f4d60f DS |
837 | commit_data = g->chunk_commit_data + (g->hash_len + 16) * lex_index; |
838 | ||
839 | item->object.parsed = 1; | |
177722b3 | 840 | |
a133c40b | 841 | set_commit_tree(item, NULL); |
177722b3 | 842 | |
177722b3 DS |
843 | pptr = &item->parents; |
844 | ||
845 | edge_value = get_be32(commit_data + g->hash_len); | |
846 | if (edge_value == GRAPH_PARENT_NONE) | |
847 | return 1; | |
4f542b7a | 848 | pptr = insert_parent_or_die(r, g, edge_value, pptr); |
177722b3 DS |
849 | |
850 | edge_value = get_be32(commit_data + g->hash_len + 4); | |
851 | if (edge_value == GRAPH_PARENT_NONE) | |
852 | return 1; | |
5af7417b | 853 | if (!(edge_value & GRAPH_EXTRA_EDGES_NEEDED)) { |
4f542b7a | 854 | pptr = insert_parent_or_die(r, g, edge_value, pptr); |
177722b3 DS |
855 | return 1; |
856 | } | |
857 | ||
5af7417b | 858 | parent_data_ptr = (uint32_t*)(g->chunk_extra_edges + |
177722b3 DS |
859 | 4 * (uint64_t)(edge_value & GRAPH_EDGE_LAST_MASK)); |
860 | do { | |
861 | edge_value = get_be32(parent_data_ptr); | |
4f542b7a | 862 | pptr = insert_parent_or_die(r, g, |
177722b3 DS |
863 | edge_value & GRAPH_EDGE_LAST_MASK, |
864 | pptr); | |
865 | parent_data_ptr++; | |
866 | } while (!(edge_value & GRAPH_LAST_EDGE)); | |
867 | ||
868 | return 1; | |
869 | } | |
870 | ||
809ea28f PS |
871 | static int search_commit_pos_in_graph(const struct object_id *id, struct commit_graph *g, uint32_t *pos) |
872 | { | |
873 | struct commit_graph *cur_g = g; | |
874 | uint32_t lex_index; | |
875 | ||
876 | while (cur_g && !bsearch_graph(cur_g, id, &lex_index)) | |
877 | cur_g = cur_g->base_graph; | |
878 | ||
879 | if (cur_g) { | |
880 | *pos = lex_index + cur_g->num_commits_in_base; | |
881 | return 1; | |
882 | } | |
883 | ||
884 | return 0; | |
885 | } | |
886 | ||
887 | static int find_commit_pos_in_graph(struct commit *item, struct commit_graph *g, uint32_t *pos) | |
e2838d85 | 888 | { |
c752ad09 AK |
889 | uint32_t graph_pos = commit_graph_position(item); |
890 | if (graph_pos != COMMIT_NOT_FROM_GRAPH) { | |
891 | *pos = graph_pos; | |
e2838d85 DS |
892 | return 1; |
893 | } else { | |
809ea28f | 894 | return search_commit_pos_in_graph(&item->object.oid, g, pos); |
e2838d85 DS |
895 | } |
896 | } | |
897 | ||
f559d6d4 PS |
898 | struct commit *lookup_commit_in_graph(struct repository *repo, const struct object_id *id) |
899 | { | |
900 | struct commit *commit; | |
901 | uint32_t pos; | |
902 | ||
903 | if (!repo->objects->commit_graph) | |
904 | return NULL; | |
905 | if (!search_commit_pos_in_graph(id, repo->objects->commit_graph, &pos)) | |
906 | return NULL; | |
907 | if (!repo_has_object_file(repo, id)) | |
908 | return NULL; | |
909 | ||
910 | commit = lookup_commit(repo, id); | |
911 | if (!commit) | |
912 | return NULL; | |
913 | if (commit->object.parsed) | |
914 | return commit; | |
915 | ||
916 | if (!fill_commit_in_graph(repo, commit, repo->objects->commit_graph, pos)) | |
917 | return NULL; | |
918 | ||
919 | return commit; | |
920 | } | |
921 | ||
4f542b7a SB |
922 | static int parse_commit_in_graph_one(struct repository *r, |
923 | struct commit_graph *g, | |
924 | struct commit *item) | |
177722b3 | 925 | { |
e2838d85 DS |
926 | uint32_t pos; |
927 | ||
177722b3 DS |
928 | if (item->object.parsed) |
929 | return 1; | |
ee797053 | 930 | |
809ea28f | 931 | if (find_commit_pos_in_graph(item, g, &pos)) |
4f542b7a | 932 | return fill_commit_in_graph(r, item, g, pos); |
ee797053 DS |
933 | |
934 | return 0; | |
935 | } | |
936 | ||
dade47c0 | 937 | int parse_commit_in_graph(struct repository *r, struct commit *item) |
ee797053 | 938 | { |
7b671f8c DS |
939 | static int checked_env = 0; |
940 | ||
941 | if (!checked_env && | |
942 | git_env_bool(GIT_TEST_COMMIT_GRAPH_DIE_ON_PARSE, 0)) | |
943 | die("dying as requested by the '%s' variable on commit-graph parse!", | |
944 | GIT_TEST_COMMIT_GRAPH_DIE_ON_PARSE); | |
945 | checked_env = 1; | |
946 | ||
dade47c0 | 947 | if (!prepare_commit_graph(r)) |
ee797053 | 948 | return 0; |
4f542b7a | 949 | return parse_commit_in_graph_one(r, r->objects->commit_graph, item); |
177722b3 DS |
950 | } |
951 | ||
dade47c0 | 952 | void load_commit_graph_info(struct repository *r, struct commit *item) |
e2838d85 DS |
953 | { |
954 | uint32_t pos; | |
dade47c0 | 955 | if (!prepare_commit_graph(r)) |
e2838d85 | 956 | return; |
809ea28f | 957 | if (find_commit_pos_in_graph(item, r->objects->commit_graph, &pos)) |
dade47c0 | 958 | fill_commit_graph_info(item, r->objects->commit_graph, pos); |
e2838d85 DS |
959 | } |
960 | ||
4f542b7a SB |
961 | static struct tree *load_tree_for_commit(struct repository *r, |
962 | struct commit_graph *g, | |
963 | struct commit *c) | |
7b8a21db DS |
964 | { |
965 | struct object_id oid; | |
d4f4d60f | 966 | const unsigned char *commit_data; |
c752ad09 | 967 | uint32_t graph_pos = commit_graph_position(c); |
d4f4d60f | 968 | |
c752ad09 | 969 | while (graph_pos < g->num_commits_in_base) |
d4f4d60f DS |
970 | g = g->base_graph; |
971 | ||
972 | commit_data = g->chunk_commit_data + | |
c752ad09 | 973 | GRAPH_DATA_WIDTH * (graph_pos - g->num_commits_in_base); |
7b8a21db | 974 | |
92e2cab9 | 975 | oidread(&oid, commit_data); |
a133c40b | 976 | set_commit_tree(c, lookup_tree(r, &oid)); |
7b8a21db DS |
977 | |
978 | return c->maybe_tree; | |
979 | } | |
980 | ||
4f542b7a SB |
981 | static struct tree *get_commit_tree_in_graph_one(struct repository *r, |
982 | struct commit_graph *g, | |
0cbef8f8 | 983 | const struct commit *c) |
7b8a21db DS |
984 | { |
985 | if (c->maybe_tree) | |
986 | return c->maybe_tree; | |
c49c82aa | 987 | if (commit_graph_position(c) == COMMIT_NOT_FROM_GRAPH) |
0cbef8f8 DS |
988 | BUG("get_commit_tree_in_graph_one called from non-commit-graph commit"); |
989 | ||
4f542b7a | 990 | return load_tree_for_commit(r, g, (struct commit *)c); |
0cbef8f8 | 991 | } |
7b8a21db | 992 | |
dade47c0 | 993 | struct tree *get_commit_tree_in_graph(struct repository *r, const struct commit *c) |
0cbef8f8 | 994 | { |
4f542b7a | 995 | return get_commit_tree_in_graph_one(r, r->objects->commit_graph, c); |
7b8a21db DS |
996 | } |
997 | ||
c9905bea DS |
998 | struct packed_commit_list { |
999 | struct commit **list; | |
3361390c JK |
1000 | size_t nr; |
1001 | size_t alloc; | |
c9905bea DS |
1002 | }; |
1003 | ||
c9905bea DS |
1004 | struct write_commit_graph_context { |
1005 | struct repository *r; | |
0bd52e27 | 1006 | struct object_directory *odb; |
c9905bea | 1007 | char *graph_name; |
a5f1c448 | 1008 | struct oid_array oids; |
c9905bea DS |
1009 | struct packed_commit_list commits; |
1010 | int num_extra_edges; | |
e8b63005 | 1011 | int num_generation_data_overflows; |
c9905bea DS |
1012 | unsigned long approx_nr_objects; |
1013 | struct progress *progress; | |
1014 | int progress_done; | |
1015 | uint64_t progress_cnt; | |
6c622f9f DS |
1016 | |
1017 | char *base_graph_name; | |
1018 | int num_commit_graphs_before; | |
1019 | int num_commit_graphs_after; | |
1020 | char **commit_graph_filenames_before; | |
1021 | char **commit_graph_filenames_after; | |
1022 | char **commit_graph_hash_after; | |
1023 | uint32_t new_num_commits_in_base; | |
1024 | struct commit_graph *new_base_graph; | |
1025 | ||
c9905bea | 1026 | unsigned append:1, |
6c622f9f | 1027 | report_progress:1, |
7c5c9b9c | 1028 | split:1, |
3d112755 | 1029 | changed_paths:1, |
e8b63005 | 1030 | order_by_pack:1, |
fde55b09 DS |
1031 | write_generation_data:1, |
1032 | trust_generation_numbers:1; | |
c2bc6e6a | 1033 | |
72a2bfca | 1034 | struct topo_level_slab *topo_levels; |
98bb7961 | 1035 | const struct commit_graph_opts *opts; |
f97b9325 | 1036 | size_t total_bloom_filter_data_size; |
98037f2b | 1037 | const struct bloom_filter_settings *bloom_settings; |
312cff52 TB |
1038 | |
1039 | int count_bloom_filter_computed; | |
1040 | int count_bloom_filter_not_computed; | |
59f0d507 | 1041 | int count_bloom_filter_trunc_empty; |
312cff52 | 1042 | int count_bloom_filter_trunc_large; |
c9905bea DS |
1043 | }; |
1044 | ||
9bab081d | 1045 | static int write_graph_chunk_fanout(struct hashfile *f, |
eb907191 | 1046 | void *data) |
08fd81c9 | 1047 | { |
eb907191 | 1048 | struct write_commit_graph_context *ctx = data; |
08fd81c9 | 1049 | int i, count = 0; |
c9905bea | 1050 | struct commit **list = ctx->commits.list; |
08fd81c9 DS |
1051 | |
1052 | /* | |
1053 | * Write the first-level table (the list is sorted, | |
1054 | * but we use a 256-entry lookup to be able to avoid | |
1055 | * having to do eight extra binary search iterations). | |
1056 | */ | |
1057 | for (i = 0; i < 256; i++) { | |
c9905bea | 1058 | while (count < ctx->commits.nr) { |
08fd81c9 DS |
1059 | if ((*list)->object.oid.hash[0] != i) |
1060 | break; | |
c9905bea | 1061 | display_progress(ctx->progress, ++ctx->progress_cnt); |
08fd81c9 DS |
1062 | count++; |
1063 | list++; | |
1064 | } | |
1065 | ||
1066 | hashwrite_be32(f, count); | |
1067 | } | |
9bab081d SG |
1068 | |
1069 | return 0; | |
08fd81c9 DS |
1070 | } |
1071 | ||
9bab081d | 1072 | static int write_graph_chunk_oids(struct hashfile *f, |
eb907191 | 1073 | void *data) |
08fd81c9 | 1074 | { |
eb907191 | 1075 | struct write_commit_graph_context *ctx = data; |
c9905bea | 1076 | struct commit **list = ctx->commits.list; |
08fd81c9 | 1077 | int count; |
c9905bea DS |
1078 | for (count = 0; count < ctx->commits.nr; count++, list++) { |
1079 | display_progress(ctx->progress, ++ctx->progress_cnt); | |
9bab081d | 1080 | hashwrite(f, (*list)->object.oid.hash, the_hash_algo->rawsz); |
53035c4f | 1081 | } |
9bab081d SG |
1082 | |
1083 | return 0; | |
08fd81c9 DS |
1084 | } |
1085 | ||
8380dcd7 | 1086 | static const struct object_id *commit_to_oid(size_t index, const void *table) |
08fd81c9 | 1087 | { |
8380dcd7 | 1088 | const struct commit * const *commits = table; |
45ee13b9 | 1089 | return &commits[index]->object.oid; |
08fd81c9 DS |
1090 | } |
1091 | ||
9bab081d | 1092 | static int write_graph_chunk_data(struct hashfile *f, |
eb907191 | 1093 | void *data) |
08fd81c9 | 1094 | { |
eb907191 | 1095 | struct write_commit_graph_context *ctx = data; |
c9905bea DS |
1096 | struct commit **list = ctx->commits.list; |
1097 | struct commit **last = ctx->commits.list + ctx->commits.nr; | |
08fd81c9 DS |
1098 | uint32_t num_extra_edges = 0; |
1099 | ||
1100 | while (list < last) { | |
1101 | struct commit_list *parent; | |
806278de | 1102 | struct object_id *tree; |
08fd81c9 DS |
1103 | int edge_value; |
1104 | uint32_t packedDate[2]; | |
c9905bea | 1105 | display_progress(ctx->progress, ++ctx->progress_cnt); |
08fd81c9 | 1106 | |
c4cc0831 | 1107 | if (repo_parse_commit_no_graph(ctx->r, *list)) |
16749b8d TB |
1108 | die(_("unable to parse commit %s"), |
1109 | oid_to_hex(&(*list)->object.oid)); | |
806278de | 1110 | tree = get_commit_tree_oid(*list); |
9bab081d | 1111 | hashwrite(f, tree->hash, the_hash_algo->rawsz); |
08fd81c9 DS |
1112 | |
1113 | parent = (*list)->parents; | |
1114 | ||
1115 | if (!parent) | |
1116 | edge_value = GRAPH_PARENT_NONE; | |
1117 | else { | |
45ee13b9 JK |
1118 | edge_value = oid_pos(&parent->item->object.oid, |
1119 | ctx->commits.list, | |
1120 | ctx->commits.nr, | |
1121 | commit_to_oid); | |
08fd81c9 | 1122 | |
6c622f9f DS |
1123 | if (edge_value >= 0) |
1124 | edge_value += ctx->new_num_commits_in_base; | |
8a6ac287 | 1125 | else if (ctx->new_base_graph) { |
6c622f9f | 1126 | uint32_t pos; |
809ea28f PS |
1127 | if (find_commit_pos_in_graph(parent->item, |
1128 | ctx->new_base_graph, | |
1129 | &pos)) | |
6c622f9f DS |
1130 | edge_value = pos; |
1131 | } | |
1132 | ||
08fd81c9 | 1133 | if (edge_value < 0) |
cce99cd8 DS |
1134 | BUG("missing parent %s for commit %s", |
1135 | oid_to_hex(&parent->item->object.oid), | |
1136 | oid_to_hex(&(*list)->object.oid)); | |
08fd81c9 DS |
1137 | } |
1138 | ||
1139 | hashwrite_be32(f, edge_value); | |
1140 | ||
1141 | if (parent) | |
1142 | parent = parent->next; | |
1143 | ||
1144 | if (!parent) | |
1145 | edge_value = GRAPH_PARENT_NONE; | |
1146 | else if (parent->next) | |
5af7417b | 1147 | edge_value = GRAPH_EXTRA_EDGES_NEEDED | num_extra_edges; |
08fd81c9 | 1148 | else { |
45ee13b9 JK |
1149 | edge_value = oid_pos(&parent->item->object.oid, |
1150 | ctx->commits.list, | |
1151 | ctx->commits.nr, | |
1152 | commit_to_oid); | |
6c622f9f DS |
1153 | |
1154 | if (edge_value >= 0) | |
1155 | edge_value += ctx->new_num_commits_in_base; | |
8a6ac287 | 1156 | else if (ctx->new_base_graph) { |
6c622f9f | 1157 | uint32_t pos; |
809ea28f PS |
1158 | if (find_commit_pos_in_graph(parent->item, |
1159 | ctx->new_base_graph, | |
1160 | &pos)) | |
6c622f9f DS |
1161 | edge_value = pos; |
1162 | } | |
1163 | ||
08fd81c9 | 1164 | if (edge_value < 0) |
cce99cd8 DS |
1165 | BUG("missing parent %s for commit %s", |
1166 | oid_to_hex(&parent->item->object.oid), | |
1167 | oid_to_hex(&(*list)->object.oid)); | |
08fd81c9 DS |
1168 | } |
1169 | ||
1170 | hashwrite_be32(f, edge_value); | |
1171 | ||
5af7417b | 1172 | if (edge_value & GRAPH_EXTRA_EDGES_NEEDED) { |
08fd81c9 DS |
1173 | do { |
1174 | num_extra_edges++; | |
1175 | parent = parent->next; | |
1176 | } while (parent); | |
1177 | } | |
1178 | ||
1179 | if (sizeof((*list)->date) > 4) | |
1180 | packedDate[0] = htonl(((*list)->date >> 32) & 0x3); | |
1181 | else | |
1182 | packedDate[0] = 0; | |
1183 | ||
72a2bfca | 1184 | packedDate[0] |= htonl(*topo_level_slab_at(ctx->topo_levels, *list) << 2); |
3258c663 | 1185 | |
08fd81c9 DS |
1186 | packedDate[1] = htonl((*list)->date); |
1187 | hashwrite(f, packedDate, 8); | |
1188 | ||
1189 | list++; | |
1190 | } | |
9bab081d SG |
1191 | |
1192 | return 0; | |
08fd81c9 DS |
1193 | } |
1194 | ||
e8b63005 | 1195 | static int write_graph_chunk_generation_data(struct hashfile *f, |
eb907191 | 1196 | void *data) |
e8b63005 | 1197 | { |
eb907191 | 1198 | struct write_commit_graph_context *ctx = data; |
e8b63005 AK |
1199 | int i, num_generation_data_overflows = 0; |
1200 | ||
1201 | for (i = 0; i < ctx->commits.nr; i++) { | |
1202 | struct commit *c = ctx->commits.list[i]; | |
90cb1c47 DS |
1203 | timestamp_t offset; |
1204 | repo_parse_commit(ctx->r, c); | |
1205 | offset = commit_graph_data_at(c)->generation - c->date; | |
e8b63005 AK |
1206 | display_progress(ctx->progress, ++ctx->progress_cnt); |
1207 | ||
1208 | if (offset > GENERATION_NUMBER_V2_OFFSET_MAX) { | |
1209 | offset = CORRECTED_COMMIT_DATE_OFFSET_OVERFLOW | num_generation_data_overflows; | |
1210 | num_generation_data_overflows++; | |
1211 | } | |
1212 | ||
1213 | hashwrite_be32(f, offset); | |
1214 | } | |
1215 | ||
1216 | return 0; | |
1217 | } | |
1218 | ||
1219 | static int write_graph_chunk_generation_data_overflow(struct hashfile *f, | |
eb907191 | 1220 | void *data) |
e8b63005 | 1221 | { |
eb907191 | 1222 | struct write_commit_graph_context *ctx = data; |
e8b63005 AK |
1223 | int i; |
1224 | for (i = 0; i < ctx->commits.nr; i++) { | |
1225 | struct commit *c = ctx->commits.list[i]; | |
1226 | timestamp_t offset = commit_graph_data_at(c)->generation - c->date; | |
1227 | display_progress(ctx->progress, ++ctx->progress_cnt); | |
1228 | ||
1229 | if (offset > GENERATION_NUMBER_V2_OFFSET_MAX) { | |
1230 | hashwrite_be32(f, offset >> 32); | |
1231 | hashwrite_be32(f, (uint32_t) offset); | |
1232 | } | |
1233 | } | |
1234 | ||
1235 | return 0; | |
1236 | } | |
1237 | ||
9bab081d | 1238 | static int write_graph_chunk_extra_edges(struct hashfile *f, |
eb907191 | 1239 | void *data) |
08fd81c9 | 1240 | { |
eb907191 | 1241 | struct write_commit_graph_context *ctx = data; |
c9905bea DS |
1242 | struct commit **list = ctx->commits.list; |
1243 | struct commit **last = ctx->commits.list + ctx->commits.nr; | |
08fd81c9 DS |
1244 | struct commit_list *parent; |
1245 | ||
1246 | while (list < last) { | |
1247 | int num_parents = 0; | |
53035c4f | 1248 | |
c9905bea | 1249 | display_progress(ctx->progress, ++ctx->progress_cnt); |
53035c4f | 1250 | |
08fd81c9 DS |
1251 | for (parent = (*list)->parents; num_parents < 3 && parent; |
1252 | parent = parent->next) | |
1253 | num_parents++; | |
1254 | ||
1255 | if (num_parents <= 2) { | |
1256 | list++; | |
1257 | continue; | |
1258 | } | |
1259 | ||
1260 | /* Since num_parents > 2, this initializer is safe. */ | |
1261 | for (parent = (*list)->parents->next; parent; parent = parent->next) { | |
45ee13b9 JK |
1262 | int edge_value = oid_pos(&parent->item->object.oid, |
1263 | ctx->commits.list, | |
1264 | ctx->commits.nr, | |
1265 | commit_to_oid); | |
08fd81c9 | 1266 | |
6c622f9f DS |
1267 | if (edge_value >= 0) |
1268 | edge_value += ctx->new_num_commits_in_base; | |
8a6ac287 | 1269 | else if (ctx->new_base_graph) { |
6c622f9f | 1270 | uint32_t pos; |
809ea28f PS |
1271 | if (find_commit_pos_in_graph(parent->item, |
1272 | ctx->new_base_graph, | |
1273 | &pos)) | |
6c622f9f DS |
1274 | edge_value = pos; |
1275 | } | |
1276 | ||
08fd81c9 | 1277 | if (edge_value < 0) |
cce99cd8 DS |
1278 | BUG("missing parent %s for commit %s", |
1279 | oid_to_hex(&parent->item->object.oid), | |
1280 | oid_to_hex(&(*list)->object.oid)); | |
08fd81c9 DS |
1281 | else if (!parent->next) |
1282 | edge_value |= GRAPH_LAST_EDGE; | |
1283 | ||
1284 | hashwrite_be32(f, edge_value); | |
1285 | } | |
1286 | ||
1287 | list++; | |
1288 | } | |
9bab081d SG |
1289 | |
1290 | return 0; | |
08fd81c9 DS |
1291 | } |
1292 | ||
9bab081d | 1293 | static int write_graph_chunk_bloom_indexes(struct hashfile *f, |
eb907191 | 1294 | void *data) |
76ffbca7 | 1295 | { |
eb907191 | 1296 | struct write_commit_graph_context *ctx = data; |
76ffbca7 GS |
1297 | struct commit **list = ctx->commits.list; |
1298 | struct commit **last = ctx->commits.list + ctx->commits.nr; | |
1299 | uint32_t cur_pos = 0; | |
76ffbca7 GS |
1300 | |
1301 | while (list < last) { | |
312cff52 | 1302 | struct bloom_filter *filter = get_bloom_filter(ctx->r, *list); |
94919742 DS |
1303 | size_t len = filter ? filter->len : 0; |
1304 | cur_pos += len; | |
150cd3b6 | 1305 | display_progress(ctx->progress, ++ctx->progress_cnt); |
76ffbca7 GS |
1306 | hashwrite_be32(f, cur_pos); |
1307 | list++; | |
1308 | } | |
1309 | ||
9bab081d | 1310 | return 0; |
76ffbca7 GS |
1311 | } |
1312 | ||
0087a87b DS |
1313 | static void trace2_bloom_filter_settings(struct write_commit_graph_context *ctx) |
1314 | { | |
1315 | struct json_writer jw = JSON_WRITER_INIT; | |
1316 | ||
1317 | jw_object_begin(&jw, 0); | |
1318 | jw_object_intmax(&jw, "hash_version", ctx->bloom_settings->hash_version); | |
1319 | jw_object_intmax(&jw, "num_hashes", ctx->bloom_settings->num_hashes); | |
1320 | jw_object_intmax(&jw, "bits_per_entry", ctx->bloom_settings->bits_per_entry); | |
97ffa4fa | 1321 | jw_object_intmax(&jw, "max_changed_paths", ctx->bloom_settings->max_changed_paths); |
0087a87b DS |
1322 | jw_end(&jw); |
1323 | ||
1324 | trace2_data_json("bloom", ctx->r, "settings", &jw); | |
1325 | ||
1326 | jw_release(&jw); | |
76ffbca7 GS |
1327 | } |
1328 | ||
9bab081d | 1329 | static int write_graph_chunk_bloom_data(struct hashfile *f, |
eb907191 | 1330 | void *data) |
76ffbca7 | 1331 | { |
eb907191 | 1332 | struct write_commit_graph_context *ctx = data; |
76ffbca7 GS |
1333 | struct commit **list = ctx->commits.list; |
1334 | struct commit **last = ctx->commits.list + ctx->commits.nr; | |
76ffbca7 | 1335 | |
0087a87b DS |
1336 | trace2_bloom_filter_settings(ctx); |
1337 | ||
98037f2b DS |
1338 | hashwrite_be32(f, ctx->bloom_settings->hash_version); |
1339 | hashwrite_be32(f, ctx->bloom_settings->num_hashes); | |
1340 | hashwrite_be32(f, ctx->bloom_settings->bits_per_entry); | |
76ffbca7 GS |
1341 | |
1342 | while (list < last) { | |
312cff52 | 1343 | struct bloom_filter *filter = get_bloom_filter(ctx->r, *list); |
94919742 | 1344 | size_t len = filter ? filter->len : 0; |
94919742 | 1345 | |
150cd3b6 | 1346 | display_progress(ctx->progress, ++ctx->progress_cnt); |
94919742 DS |
1347 | if (len) |
1348 | hashwrite(f, filter->data, len * sizeof(unsigned char)); | |
76ffbca7 GS |
1349 | list++; |
1350 | } | |
1351 | ||
9bab081d | 1352 | return 0; |
76ffbca7 GS |
1353 | } |
1354 | ||
08fd81c9 DS |
1355 | static int add_packed_commits(const struct object_id *oid, |
1356 | struct packed_git *pack, | |
1357 | uint32_t pos, | |
1358 | void *data) | |
1359 | { | |
c9905bea | 1360 | struct write_commit_graph_context *ctx = (struct write_commit_graph_context*)data; |
08fd81c9 DS |
1361 | enum object_type type; |
1362 | off_t offset = nth_packed_object_offset(pack, pos); | |
1363 | struct object_info oi = OBJECT_INFO_INIT; | |
1364 | ||
c9905bea DS |
1365 | if (ctx->progress) |
1366 | display_progress(ctx->progress, ++ctx->progress_done); | |
7b0f2292 | 1367 | |
08fd81c9 | 1368 | oi.typep = &type; |
c9905bea | 1369 | if (packed_object_info(ctx->r, pack, offset, &oi) < 0) |
4f5b532d | 1370 | die(_("unable to get type of object %s"), oid_to_hex(oid)); |
08fd81c9 DS |
1371 | |
1372 | if (type != OBJ_COMMIT) | |
1373 | return 0; | |
1374 | ||
a5f1c448 | 1375 | oid_array_append(&ctx->oids, oid); |
d21ee7d1 JK |
1376 | set_commit_pos(ctx->r, oid); |
1377 | ||
08fd81c9 DS |
1378 | return 0; |
1379 | } | |
1380 | ||
c9905bea | 1381 | static void add_missing_parents(struct write_commit_graph_context *ctx, struct commit *commit) |
4f2542b4 DS |
1382 | { |
1383 | struct commit_list *parent; | |
1384 | for (parent = commit->parents; parent; parent = parent->next) { | |
cb99a34e | 1385 | if (!(parent->item->object.flags & REACHABLE)) { |
a5f1c448 | 1386 | oid_array_append(&ctx->oids, &parent->item->object.oid); |
cb99a34e | 1387 | parent->item->object.flags |= REACHABLE; |
4f2542b4 DS |
1388 | } |
1389 | } | |
1390 | } | |
1391 | ||
c9905bea | 1392 | static void close_reachable(struct write_commit_graph_context *ctx) |
4f2542b4 | 1393 | { |
49bbc57a | 1394 | int i; |
4f2542b4 | 1395 | struct commit *commit; |
98bb7961 TB |
1396 | enum commit_graph_split_flags flags = ctx->opts ? |
1397 | ctx->opts->split_flags : COMMIT_GRAPH_SPLIT_UNSPECIFIED; | |
4f2542b4 | 1398 | |
c9905bea DS |
1399 | if (ctx->report_progress) |
1400 | ctx->progress = start_delayed_progress( | |
1401 | _("Loading known commits in commit graph"), | |
1402 | ctx->oids.nr); | |
1403 | for (i = 0; i < ctx->oids.nr; i++) { | |
1404 | display_progress(ctx->progress, i + 1); | |
a5f1c448 | 1405 | commit = lookup_commit(ctx->r, &ctx->oids.oid[i]); |
4f2542b4 | 1406 | if (commit) |
cb99a34e | 1407 | commit->object.flags |= REACHABLE; |
4f2542b4 | 1408 | } |
c9905bea | 1409 | stop_progress(&ctx->progress); |
4f2542b4 DS |
1410 | |
1411 | /* | |
c9905bea | 1412 | * As this loop runs, ctx->oids.nr may grow, but not more |
4f2542b4 DS |
1413 | * than the number of missing commits in the reachable |
1414 | * closure. | |
1415 | */ | |
c9905bea DS |
1416 | if (ctx->report_progress) |
1417 | ctx->progress = start_delayed_progress( | |
1418 | _("Expanding reachable commits in commit graph"), | |
67fa6aac | 1419 | 0); |
c9905bea DS |
1420 | for (i = 0; i < ctx->oids.nr; i++) { |
1421 | display_progress(ctx->progress, i + 1); | |
a5f1c448 | 1422 | commit = lookup_commit(ctx->r, &ctx->oids.oid[i]); |
4f2542b4 | 1423 | |
6c622f9f DS |
1424 | if (!commit) |
1425 | continue; | |
1426 | if (ctx->split) { | |
c4cc0831 | 1427 | if ((!repo_parse_commit(ctx->r, commit) && |
c49c82aa | 1428 | commit_graph_position(commit) == COMMIT_NOT_FROM_GRAPH) || |
8a6ac287 | 1429 | flags == COMMIT_GRAPH_SPLIT_REPLACE) |
6c622f9f | 1430 | add_missing_parents(ctx, commit); |
c4cc0831 | 1431 | } else if (!repo_parse_commit_no_graph(ctx->r, commit)) |
c9905bea | 1432 | add_missing_parents(ctx, commit); |
4f2542b4 | 1433 | } |
c9905bea | 1434 | stop_progress(&ctx->progress); |
4f2542b4 | 1435 | |
c9905bea DS |
1436 | if (ctx->report_progress) |
1437 | ctx->progress = start_delayed_progress( | |
1438 | _("Clearing commit marks in commit graph"), | |
1439 | ctx->oids.nr); | |
1440 | for (i = 0; i < ctx->oids.nr; i++) { | |
1441 | display_progress(ctx->progress, i + 1); | |
a5f1c448 | 1442 | commit = lookup_commit(ctx->r, &ctx->oids.oid[i]); |
4f2542b4 DS |
1443 | |
1444 | if (commit) | |
cb99a34e | 1445 | commit->object.flags &= ~REACHABLE; |
4f2542b4 | 1446 | } |
c9905bea | 1447 | stop_progress(&ctx->progress); |
4f2542b4 DS |
1448 | } |
1449 | ||
9c2c0a82 | 1450 | static void compute_topological_levels(struct write_commit_graph_context *ctx) |
3258c663 DS |
1451 | { |
1452 | int i; | |
1453 | struct commit_list *list = NULL; | |
1454 | ||
c9905bea | 1455 | if (ctx->report_progress) |
ecc08690 | 1456 | ctx->progress = start_delayed_progress( |
9c2c0a82 | 1457 | _("Computing commit graph topological levels"), |
c9905bea DS |
1458 | ctx->commits.nr); |
1459 | for (i = 0; i < ctx->commits.nr; i++) { | |
90cb1c47 DS |
1460 | struct commit *c = ctx->commits.list[i]; |
1461 | uint32_t level; | |
90cb1c47 DS |
1462 | |
1463 | repo_parse_commit(ctx->r, c); | |
1464 | level = *topo_level_slab_at(ctx->topo_levels, c); | |
4844812b | 1465 | |
c9905bea | 1466 | display_progress(ctx->progress, i + 1); |
9c2c0a82 | 1467 | if (level != GENERATION_NUMBER_ZERO) |
3258c663 DS |
1468 | continue; |
1469 | ||
90cb1c47 | 1470 | commit_list_insert(c, &list); |
3258c663 DS |
1471 | while (list) { |
1472 | struct commit *current = list->item; | |
1473 | struct commit_list *parent; | |
1474 | int all_parents_computed = 1; | |
72a2bfca | 1475 | uint32_t max_level = 0; |
3258c663 DS |
1476 | |
1477 | for (parent = current->parents; parent; parent = parent->next) { | |
90cb1c47 | 1478 | repo_parse_commit(ctx->r, parent->item); |
72a2bfca | 1479 | level = *topo_level_slab_at(ctx->topo_levels, parent->item); |
4844812b | 1480 | |
9c2c0a82 | 1481 | if (level == GENERATION_NUMBER_ZERO) { |
3258c663 DS |
1482 | all_parents_computed = 0; |
1483 | commit_list_insert(parent->item, &list); | |
1484 | break; | |
3258c663 | 1485 | } |
c1a09119 AK |
1486 | |
1487 | if (level > max_level) | |
1488 | max_level = level; | |
3258c663 DS |
1489 | } |
1490 | ||
1491 | if (all_parents_computed) { | |
3258c663 DS |
1492 | pop_commit(&list); |
1493 | ||
d7f92784 AK |
1494 | if (max_level > GENERATION_NUMBER_V1_MAX - 1) |
1495 | max_level = GENERATION_NUMBER_V1_MAX - 1; | |
72a2bfca | 1496 | *topo_level_slab_at(ctx->topo_levels, current) = max_level + 1; |
9c2c0a82 DS |
1497 | } |
1498 | } | |
1499 | } | |
1500 | stop_progress(&ctx->progress); | |
1501 | } | |
1502 | ||
1503 | static void compute_generation_numbers(struct write_commit_graph_context *ctx) | |
1504 | { | |
1505 | int i; | |
1506 | struct commit_list *list = NULL; | |
1507 | ||
1508 | if (ctx->report_progress) | |
1509 | ctx->progress = start_delayed_progress( | |
1510 | _("Computing commit graph generation numbers"), | |
1511 | ctx->commits.nr); | |
fde55b09 DS |
1512 | |
1513 | if (!ctx->trust_generation_numbers) { | |
1514 | for (i = 0; i < ctx->commits.nr; i++) { | |
1515 | struct commit *c = ctx->commits.list[i]; | |
1516 | repo_parse_commit(ctx->r, c); | |
1517 | commit_graph_data_at(c)->generation = GENERATION_NUMBER_ZERO; | |
1518 | } | |
1519 | } | |
1520 | ||
9c2c0a82 DS |
1521 | for (i = 0; i < ctx->commits.nr; i++) { |
1522 | struct commit *c = ctx->commits.list[i]; | |
1523 | timestamp_t corrected_commit_date; | |
1524 | ||
1525 | repo_parse_commit(ctx->r, c); | |
1526 | corrected_commit_date = commit_graph_data_at(c)->generation; | |
1527 | ||
1528 | display_progress(ctx->progress, i + 1); | |
1529 | if (corrected_commit_date != GENERATION_NUMBER_ZERO) | |
1530 | continue; | |
1531 | ||
1532 | commit_list_insert(c, &list); | |
1533 | while (list) { | |
1534 | struct commit *current = list->item; | |
1535 | struct commit_list *parent; | |
1536 | int all_parents_computed = 1; | |
1537 | timestamp_t max_corrected_commit_date = 0; | |
1538 | ||
1539 | for (parent = current->parents; parent; parent = parent->next) { | |
1540 | repo_parse_commit(ctx->r, parent->item); | |
1541 | corrected_commit_date = commit_graph_data_at(parent->item)->generation; | |
1542 | ||
1543 | if (corrected_commit_date == GENERATION_NUMBER_ZERO) { | |
1544 | all_parents_computed = 0; | |
1545 | commit_list_insert(parent->item, &list); | |
1546 | break; | |
1547 | } | |
1548 | ||
1549 | if (corrected_commit_date > max_corrected_commit_date) | |
1550 | max_corrected_commit_date = corrected_commit_date; | |
1551 | } | |
1552 | ||
1553 | if (all_parents_computed) { | |
1554 | pop_commit(&list); | |
c1a09119 AK |
1555 | |
1556 | if (current->date && current->date > max_corrected_commit_date) | |
1557 | max_corrected_commit_date = current->date - 1; | |
1558 | commit_graph_data_at(current)->generation = max_corrected_commit_date + 1; | |
e8b63005 AK |
1559 | |
1560 | if (commit_graph_data_at(current)->generation - current->date > GENERATION_NUMBER_V2_OFFSET_MAX) | |
1561 | ctx->num_generation_data_overflows++; | |
3258c663 DS |
1562 | } |
1563 | } | |
1564 | } | |
c9905bea | 1565 | stop_progress(&ctx->progress); |
3258c663 DS |
1566 | } |
1567 | ||
312cff52 TB |
1568 | static void trace2_bloom_filter_write_statistics(struct write_commit_graph_context *ctx) |
1569 | { | |
1570 | trace2_data_intmax("commit-graph", ctx->r, "filter-computed", | |
1571 | ctx->count_bloom_filter_computed); | |
1572 | trace2_data_intmax("commit-graph", ctx->r, "filter-not-computed", | |
1573 | ctx->count_bloom_filter_not_computed); | |
59f0d507 TB |
1574 | trace2_data_intmax("commit-graph", ctx->r, "filter-trunc-empty", |
1575 | ctx->count_bloom_filter_trunc_empty); | |
312cff52 TB |
1576 | trace2_data_intmax("commit-graph", ctx->r, "filter-trunc-large", |
1577 | ctx->count_bloom_filter_trunc_large); | |
1578 | } | |
1579 | ||
f97b9325 GS |
1580 | static void compute_bloom_filters(struct write_commit_graph_context *ctx) |
1581 | { | |
1582 | int i; | |
1583 | struct progress *progress = NULL; | |
d21ee7d1 | 1584 | struct commit **sorted_commits; |
809e0327 | 1585 | int max_new_filters; |
f97b9325 GS |
1586 | |
1587 | init_bloom_filters(); | |
1588 | ||
1589 | if (ctx->report_progress) | |
1590 | progress = start_delayed_progress( | |
1591 | _("Computing commit changed paths Bloom filters"), | |
1592 | ctx->commits.nr); | |
1593 | ||
d21ee7d1 JK |
1594 | ALLOC_ARRAY(sorted_commits, ctx->commits.nr); |
1595 | COPY_ARRAY(sorted_commits, ctx->commits.list, ctx->commits.nr); | |
3d112755 GS |
1596 | |
1597 | if (ctx->order_by_pack) | |
1598 | QSORT(sorted_commits, ctx->commits.nr, commit_pos_cmp); | |
1599 | else | |
1600 | QSORT(sorted_commits, ctx->commits.nr, commit_gen_cmp); | |
d21ee7d1 | 1601 | |
809e0327 TB |
1602 | max_new_filters = ctx->opts && ctx->opts->max_new_filters >= 0 ? |
1603 | ctx->opts->max_new_filters : ctx->commits.nr; | |
1604 | ||
f97b9325 | 1605 | for (i = 0; i < ctx->commits.nr; i++) { |
312cff52 | 1606 | enum bloom_filter_computed computed = 0; |
d21ee7d1 | 1607 | struct commit *c = sorted_commits[i]; |
312cff52 TB |
1608 | struct bloom_filter *filter = get_or_compute_bloom_filter( |
1609 | ctx->r, | |
1610 | c, | |
809e0327 | 1611 | ctx->count_bloom_filter_computed < max_new_filters, |
9a7a9ed1 | 1612 | ctx->bloom_settings, |
312cff52 TB |
1613 | &computed); |
1614 | if (computed & BLOOM_COMPUTED) { | |
1615 | ctx->count_bloom_filter_computed++; | |
59f0d507 TB |
1616 | if (computed & BLOOM_TRUNC_EMPTY) |
1617 | ctx->count_bloom_filter_trunc_empty++; | |
312cff52 TB |
1618 | if (computed & BLOOM_TRUNC_LARGE) |
1619 | ctx->count_bloom_filter_trunc_large++; | |
1620 | } else if (computed & BLOOM_NOT_COMPUTED) | |
1621 | ctx->count_bloom_filter_not_computed++; | |
809e0327 TB |
1622 | ctx->total_bloom_filter_data_size += filter |
1623 | ? sizeof(unsigned char) * filter->len : 0; | |
f97b9325 GS |
1624 | display_progress(progress, i + 1); |
1625 | } | |
1626 | ||
312cff52 TB |
1627 | if (trace2_is_enabled()) |
1628 | trace2_bloom_filter_write_statistics(ctx); | |
1629 | ||
d21ee7d1 | 1630 | free(sorted_commits); |
f97b9325 GS |
1631 | stop_progress(&progress); |
1632 | } | |
1633 | ||
1fe10844 TB |
1634 | struct refs_cb_data { |
1635 | struct oidset *commits; | |
d335ce8f | 1636 | struct progress *progress; |
1fe10844 TB |
1637 | }; |
1638 | ||
6830c360 TB |
1639 | static int add_ref_to_set(const char *refname, |
1640 | const struct object_id *oid, | |
1641 | int flags, void *cb_data) | |
59fb8770 | 1642 | { |
630cd519 | 1643 | struct object_id peeled; |
1fe10844 | 1644 | struct refs_cb_data *data = (struct refs_cb_data *)cb_data; |
59fb8770 | 1645 | |
36a31792 | 1646 | if (!peel_iterated_oid(oid, &peeled)) |
630cd519 TB |
1647 | oid = &peeled; |
1648 | if (oid_object_info(the_repository, oid, NULL) == OBJ_COMMIT) | |
1649 | oidset_insert(data->commits, oid); | |
d335ce8f TB |
1650 | |
1651 | display_progress(data->progress, oidset_size(data->commits)); | |
59fb8770 | 1652 | |
59fb8770 DS |
1653 | return 0; |
1654 | } | |
1655 | ||
0bd52e27 | 1656 | int write_commit_graph_reachable(struct object_directory *odb, |
39d88318 | 1657 | enum commit_graph_write_flags flags, |
98bb7961 | 1658 | const struct commit_graph_opts *opts) |
59fb8770 | 1659 | { |
6830c360 | 1660 | struct oidset commits = OIDSET_INIT; |
1fe10844 | 1661 | struct refs_cb_data data; |
e103f727 | 1662 | int result; |
59fb8770 | 1663 | |
1fe10844 TB |
1664 | memset(&data, 0, sizeof(data)); |
1665 | data.commits = &commits; | |
d335ce8f TB |
1666 | if (flags & COMMIT_GRAPH_WRITE_PROGRESS) |
1667 | data.progress = start_delayed_progress( | |
1668 | _("Collecting referenced commits"), 0); | |
1fe10844 TB |
1669 | |
1670 | for_each_ref(add_ref_to_set, &data); | |
6f9d5f2f SG |
1671 | |
1672 | stop_progress(&data.progress); | |
1673 | ||
6830c360 | 1674 | result = write_commit_graph(odb, NULL, &commits, |
98bb7961 | 1675 | flags, opts); |
f4dbdfc4 | 1676 | |
6830c360 | 1677 | oidset_clear(&commits); |
e103f727 | 1678 | return result; |
59fb8770 DS |
1679 | } |
1680 | ||
ef5b83f2 DS |
1681 | static int fill_oids_from_packs(struct write_commit_graph_context *ctx, |
1682 | struct string_list *pack_indexes) | |
08fd81c9 | 1683 | { |
ef5b83f2 | 1684 | uint32_t i; |
28944739 | 1685 | struct strbuf progress_title = STRBUF_INIT; |
ef5b83f2 DS |
1686 | struct strbuf packname = STRBUF_INIT; |
1687 | int dirlen; | |
08fd81c9 | 1688 | |
0bd52e27 | 1689 | strbuf_addf(&packname, "%s/pack/", ctx->odb->path); |
ef5b83f2 DS |
1690 | dirlen = packname.len; |
1691 | if (ctx->report_progress) { | |
1692 | strbuf_addf(&progress_title, | |
1693 | Q_("Finding commits for commit graph in %d pack", | |
1694 | "Finding commits for commit graph in %d packs", | |
1695 | pack_indexes->nr), | |
1696 | pack_indexes->nr); | |
1697 | ctx->progress = start_delayed_progress(progress_title.buf, 0); | |
1698 | ctx->progress_done = 0; | |
7547b95b | 1699 | } |
ef5b83f2 DS |
1700 | for (i = 0; i < pack_indexes->nr; i++) { |
1701 | struct packed_git *p; | |
1702 | strbuf_setlen(&packname, dirlen); | |
1703 | strbuf_addstr(&packname, pack_indexes->items[i].string); | |
1704 | p = add_packed_git(packname.buf, packname.len, 1); | |
1705 | if (!p) { | |
1706 | error(_("error adding pack %s"), packname.buf); | |
1707 | return -1; | |
7547b95b | 1708 | } |
ef5b83f2 DS |
1709 | if (open_pack_index(p)) { |
1710 | error(_("error opening index for %s"), packname.buf); | |
1711 | return -1; | |
1712 | } | |
1713 | for_each_object_in_pack(p, add_packed_commits, ctx, | |
1714 | FOR_EACH_OBJECT_PACK_ORDER); | |
1715 | close_pack(p); | |
1716 | free(p); | |
7547b95b DS |
1717 | } |
1718 | ||
ef5b83f2 | 1719 | stop_progress(&ctx->progress); |
0aa6bce7 | 1720 | strbuf_release(&progress_title); |
ef5b83f2 DS |
1721 | strbuf_release(&packname); |
1722 | ||
1723 | return 0; | |
1724 | } | |
1725 | ||
6830c360 TB |
1726 | static int fill_oids_from_commits(struct write_commit_graph_context *ctx, |
1727 | struct oidset *commits) | |
4c9efe85 | 1728 | { |
6830c360 TB |
1729 | struct oidset_iter iter; |
1730 | struct object_id *oid; | |
1731 | ||
1732 | if (!oidset_size(commits)) | |
1733 | return 0; | |
4c9efe85 | 1734 | |
6830c360 TB |
1735 | oidset_iter_init(commits, &iter); |
1736 | while ((oid = oidset_iter_next(&iter))) { | |
a5f1c448 | 1737 | oid_array_append(&ctx->oids, oid); |
3d5df01b | 1738 | } |
6830c360 | 1739 | |
7c5c9b9c | 1740 | return 0; |
4c9efe85 | 1741 | } |
3d5df01b | 1742 | |
b2c83060 DS |
1743 | static void fill_oids_from_all_packs(struct write_commit_graph_context *ctx) |
1744 | { | |
1745 | if (ctx->report_progress) | |
1746 | ctx->progress = start_delayed_progress( | |
1747 | _("Finding commits for commit graph among packed objects"), | |
1748 | ctx->approx_nr_objects); | |
1749 | for_each_packed_object(add_packed_commits, ctx, | |
1750 | FOR_EACH_OBJECT_PACK_ORDER); | |
1751 | if (ctx->progress_done < ctx->approx_nr_objects) | |
1752 | display_progress(ctx->progress, ctx->approx_nr_objects); | |
1753 | stop_progress(&ctx->progress); | |
1754 | } | |
049d51a2 | 1755 | |
f998d542 DS |
1756 | static void copy_oids_to_commits(struct write_commit_graph_context *ctx) |
1757 | { | |
1758 | uint32_t i; | |
98bb7961 TB |
1759 | enum commit_graph_split_flags flags = ctx->opts ? |
1760 | ctx->opts->split_flags : COMMIT_GRAPH_SPLIT_UNSPECIFIED; | |
08fd81c9 | 1761 | |
f998d542 DS |
1762 | ctx->num_extra_edges = 0; |
1763 | if (ctx->report_progress) | |
1764 | ctx->progress = start_delayed_progress( | |
890226cc | 1765 | _("Finding extra edges in commit graph"), |
f998d542 | 1766 | ctx->oids.nr); |
a5f1c448 JK |
1767 | oid_array_sort(&ctx->oids); |
1768 | for (i = 0; i < ctx->oids.nr; i = oid_array_next_unique(&ctx->oids, i)) { | |
689a146c RS |
1769 | unsigned int num_parents; |
1770 | ||
f998d542 | 1771 | display_progress(ctx->progress, i + 1); |
08fd81c9 | 1772 | |
6c622f9f | 1773 | ALLOC_GROW(ctx->commits.list, ctx->commits.nr + 1, ctx->commits.alloc); |
a5f1c448 | 1774 | ctx->commits.list[ctx->commits.nr] = lookup_commit(ctx->r, &ctx->oids.oid[i]); |
6c622f9f | 1775 | |
8a6ac287 | 1776 | if (ctx->split && flags != COMMIT_GRAPH_SPLIT_REPLACE && |
c49c82aa | 1777 | commit_graph_position(ctx->commits.list[ctx->commits.nr]) != COMMIT_NOT_FROM_GRAPH) |
6c622f9f DS |
1778 | continue; |
1779 | ||
8a6ac287 | 1780 | if (ctx->split && flags == COMMIT_GRAPH_SPLIT_REPLACE) |
c4cc0831 | 1781 | repo_parse_commit(ctx->r, ctx->commits.list[ctx->commits.nr]); |
8a6ac287 | 1782 | else |
c4cc0831 | 1783 | repo_parse_commit_no_graph(ctx->r, ctx->commits.list[ctx->commits.nr]); |
08fd81c9 | 1784 | |
689a146c | 1785 | num_parents = commit_list_count(ctx->commits.list[ctx->commits.nr]->parents); |
08fd81c9 | 1786 | if (num_parents > 2) |
f998d542 | 1787 | ctx->num_extra_edges += num_parents - 1; |
08fd81c9 | 1788 | |
f998d542 | 1789 | ctx->commits.nr++; |
08fd81c9 | 1790 | } |
f998d542 DS |
1791 | stop_progress(&ctx->progress); |
1792 | } | |
08fd81c9 | 1793 | |
6c622f9f DS |
1794 | static int write_graph_chunk_base_1(struct hashfile *f, |
1795 | struct commit_graph *g) | |
1796 | { | |
1797 | int num = 0; | |
1798 | ||
1799 | if (!g) | |
1800 | return 0; | |
1801 | ||
1802 | num = write_graph_chunk_base_1(f, g->base_graph); | |
1803 | hashwrite(f, g->oid.hash, the_hash_algo->rawsz); | |
1804 | return num + 1; | |
1805 | } | |
1806 | ||
1807 | static int write_graph_chunk_base(struct hashfile *f, | |
eb907191 | 1808 | void *data) |
6c622f9f | 1809 | { |
eb907191 | 1810 | struct write_commit_graph_context *ctx = data; |
6c622f9f DS |
1811 | int num = write_graph_chunk_base_1(f, ctx->new_base_graph); |
1812 | ||
1813 | if (num != ctx->num_commit_graphs_after - 1) { | |
1814 | error(_("failed to write correct number of base graph ids")); | |
1815 | return -1; | |
1816 | } | |
1817 | ||
1818 | return 0; | |
1819 | } | |
1820 | ||
238def57 | 1821 | static int write_commit_graph_file(struct write_commit_graph_context *ctx) |
08fd81c9 | 1822 | { |
238def57 | 1823 | uint32_t i; |
6c622f9f | 1824 | int fd; |
08fd81c9 | 1825 | struct hashfile *f; |
08fd81c9 | 1826 | struct lock_file lk = LOCK_INIT; |
c1665998 | 1827 | const unsigned hashsz = the_hash_algo->rawsz; |
28944739 | 1828 | struct strbuf progress_title = STRBUF_INIT; |
47410aa8 | 1829 | struct chunkfile *cf; |
72871b13 | 1830 | unsigned char file_hash[GIT_MAX_RAWSZ]; |
6c622f9f DS |
1831 | |
1832 | if (ctx->split) { | |
1833 | struct strbuf tmp_file = STRBUF_INIT; | |
1834 | ||
1835 | strbuf_addf(&tmp_file, | |
1836 | "%s/info/commit-graphs/tmp_graph_XXXXXX", | |
0bd52e27 | 1837 | ctx->odb->path); |
6c622f9f DS |
1838 | ctx->graph_name = strbuf_detach(&tmp_file, NULL); |
1839 | } else { | |
ad2dd5bb | 1840 | ctx->graph_name = get_commit_graph_filename(ctx->odb); |
6c622f9f | 1841 | } |
238def57 | 1842 | |
238def57 DS |
1843 | if (safe_create_leading_directories(ctx->graph_name)) { |
1844 | UNLEAK(ctx->graph_name); | |
1845 | error(_("unable to create leading directories of %s"), | |
1846 | ctx->graph_name); | |
1847 | return -1; | |
f4dbdfc4 | 1848 | } |
08fd81c9 | 1849 | |
6c622f9f | 1850 | if (ctx->split) { |
663b2b1b | 1851 | char *lock_name = get_commit_graph_chain_filename(ctx->odb); |
08fd81c9 | 1852 | |
45a4365c TB |
1853 | hold_lock_file_for_update_mode(&lk, lock_name, |
1854 | LOCK_DIE_ON_ERROR, 0444); | |
08fd81c9 | 1855 | |
6c622f9f DS |
1856 | fd = git_mkstemp_mode(ctx->graph_name, 0444); |
1857 | if (fd < 0) { | |
a2d57e22 | 1858 | error(_("unable to create temporary graph layer")); |
6c622f9f DS |
1859 | return -1; |
1860 | } | |
1861 | ||
f4d62847 TB |
1862 | if (adjust_shared_perm(ctx->graph_name)) { |
1863 | error(_("unable to adjust shared permissions for '%s'"), | |
1864 | ctx->graph_name); | |
1865 | return -1; | |
1866 | } | |
1867 | ||
6c622f9f DS |
1868 | f = hashfd(fd, ctx->graph_name); |
1869 | } else { | |
1f9becae TB |
1870 | hold_lock_file_for_update_mode(&lk, ctx->graph_name, |
1871 | LOCK_DIE_ON_ERROR, 0444); | |
a52cdce9 MÅ |
1872 | fd = get_lock_file_fd(&lk); |
1873 | f = hashfd(fd, get_lock_file_path(&lk)); | |
6c622f9f | 1874 | } |
08fd81c9 | 1875 | |
47410aa8 DS |
1876 | cf = init_chunkfile(f); |
1877 | ||
1878 | add_chunk(cf, GRAPH_CHUNKID_OIDFANOUT, GRAPH_FANOUT_SIZE, | |
1879 | write_graph_chunk_fanout); | |
1880 | add_chunk(cf, GRAPH_CHUNKID_OIDLOOKUP, hashsz * ctx->commits.nr, | |
1881 | write_graph_chunk_oids); | |
1882 | add_chunk(cf, GRAPH_CHUNKID_DATA, (hashsz + 16) * ctx->commits.nr, | |
1883 | write_graph_chunk_data); | |
e8b63005 | 1884 | |
47410aa8 DS |
1885 | if (ctx->write_generation_data) |
1886 | add_chunk(cf, GRAPH_CHUNKID_GENERATION_DATA, | |
1887 | sizeof(uint32_t) * ctx->commits.nr, | |
1888 | write_graph_chunk_generation_data); | |
1889 | if (ctx->num_generation_data_overflows) | |
1890 | add_chunk(cf, GRAPH_CHUNKID_GENERATION_DATA_OVERFLOW, | |
1891 | sizeof(timestamp_t) * ctx->num_generation_data_overflows, | |
1892 | write_graph_chunk_generation_data_overflow); | |
1893 | if (ctx->num_extra_edges) | |
1894 | add_chunk(cf, GRAPH_CHUNKID_EXTRAEDGES, | |
1895 | 4 * ctx->num_extra_edges, | |
1896 | write_graph_chunk_extra_edges); | |
76ffbca7 | 1897 | if (ctx->changed_paths) { |
47410aa8 DS |
1898 | add_chunk(cf, GRAPH_CHUNKID_BLOOMINDEXES, |
1899 | sizeof(uint32_t) * ctx->commits.nr, | |
1900 | write_graph_chunk_bloom_indexes); | |
1901 | add_chunk(cf, GRAPH_CHUNKID_BLOOMDATA, | |
1902 | sizeof(uint32_t) * 3 | |
1903 | + ctx->total_bloom_filter_data_size, | |
1904 | write_graph_chunk_bloom_data); | |
76ffbca7 | 1905 | } |
47410aa8 DS |
1906 | if (ctx->num_commit_graphs_after > 1) |
1907 | add_chunk(cf, GRAPH_CHUNKID_BASE, | |
1908 | hashsz * (ctx->num_commit_graphs_after - 1), | |
1909 | write_graph_chunk_base); | |
144354b0 DS |
1910 | |
1911 | hashwrite_be32(f, GRAPH_SIGNATURE); | |
1912 | ||
1913 | hashwrite_u8(f, GRAPH_VERSION); | |
1914 | hashwrite_u8(f, oid_version()); | |
47410aa8 | 1915 | hashwrite_u8(f, get_num_chunks(cf)); |
6c622f9f | 1916 | hashwrite_u8(f, ctx->num_commit_graphs_after - 1); |
08fd81c9 | 1917 | |
238def57 | 1918 | if (ctx->report_progress) { |
28944739 ÆAB |
1919 | strbuf_addf(&progress_title, |
1920 | Q_("Writing out commit graph in %d pass", | |
1921 | "Writing out commit graph in %d passes", | |
c4ff24bb TB |
1922 | get_num_chunks(cf)), |
1923 | get_num_chunks(cf)); | |
238def57 | 1924 | ctx->progress = start_delayed_progress( |
28944739 | 1925 | progress_title.buf, |
c4ff24bb | 1926 | get_num_chunks(cf) * ctx->commits.nr); |
28944739 | 1927 | } |
17e6275f | 1928 | |
47410aa8 | 1929 | write_chunkfile(cf, ctx); |
17e6275f | 1930 | |
238def57 | 1931 | stop_progress(&ctx->progress); |
28944739 | 1932 | strbuf_release(&progress_title); |
08fd81c9 | 1933 | |
6c622f9f DS |
1934 | if (ctx->split && ctx->base_graph_name && ctx->num_commit_graphs_after > 1) { |
1935 | char *new_base_hash = xstrdup(oid_to_hex(&ctx->new_base_graph->oid)); | |
ad2dd5bb | 1936 | char *new_base_name = get_split_graph_filename(ctx->new_base_graph->odb, new_base_hash); |
6c622f9f DS |
1937 | |
1938 | free(ctx->commit_graph_filenames_after[ctx->num_commit_graphs_after - 2]); | |
1939 | free(ctx->commit_graph_hash_after[ctx->num_commit_graphs_after - 2]); | |
1940 | ctx->commit_graph_filenames_after[ctx->num_commit_graphs_after - 2] = new_base_name; | |
1941 | ctx->commit_graph_hash_after[ctx->num_commit_graphs_after - 2] = new_base_hash; | |
1942 | } | |
1943 | ||
c3a3a964 | 1944 | close_commit_graph(ctx->r->objects); |
72871b13 | 1945 | finalize_hashfile(f, file_hash, CSUM_HASH_IN_STREAM | CSUM_FSYNC); |
47410aa8 | 1946 | free_chunkfile(cf); |
6c622f9f DS |
1947 | |
1948 | if (ctx->split) { | |
1949 | FILE *chainf = fdopen_lock_file(&lk, "w"); | |
1950 | char *final_graph_name; | |
1951 | int result; | |
1952 | ||
1953 | close(fd); | |
1954 | ||
1955 | if (!chainf) { | |
1956 | error(_("unable to open commit-graph chain file")); | |
1957 | return -1; | |
1958 | } | |
1959 | ||
1960 | if (ctx->base_graph_name) { | |
8a6ac287 TB |
1961 | const char *dest; |
1962 | int idx = ctx->num_commit_graphs_after - 1; | |
1963 | if (ctx->num_commit_graphs_after > 1) | |
1964 | idx--; | |
1965 | ||
1966 | dest = ctx->commit_graph_filenames_after[idx]; | |
6c622f9f | 1967 | |
135a7123 DS |
1968 | if (strcmp(ctx->base_graph_name, dest)) { |
1969 | result = rename(ctx->base_graph_name, dest); | |
1970 | ||
1971 | if (result) { | |
1972 | error(_("failed to rename base commit-graph file")); | |
1973 | return -1; | |
1974 | } | |
6c622f9f DS |
1975 | } |
1976 | } else { | |
ad2dd5bb | 1977 | char *graph_name = get_commit_graph_filename(ctx->odb); |
6c622f9f DS |
1978 | unlink(graph_name); |
1979 | } | |
1980 | ||
72871b13 | 1981 | ctx->commit_graph_hash_after[ctx->num_commit_graphs_after - 1] = xstrdup(hash_to_hex(file_hash)); |
ad2dd5bb | 1982 | final_graph_name = get_split_graph_filename(ctx->odb, |
6c622f9f DS |
1983 | ctx->commit_graph_hash_after[ctx->num_commit_graphs_after - 1]); |
1984 | ctx->commit_graph_filenames_after[ctx->num_commit_graphs_after - 1] = final_graph_name; | |
1985 | ||
1986 | result = rename(ctx->graph_name, final_graph_name); | |
1987 | ||
1988 | for (i = 0; i < ctx->num_commit_graphs_after; i++) | |
a52cdce9 | 1989 | fprintf(get_lock_file_fp(&lk), "%s\n", ctx->commit_graph_hash_after[i]); |
6c622f9f DS |
1990 | |
1991 | if (result) { | |
1992 | error(_("failed to rename temporary commit-graph file")); | |
1993 | return -1; | |
1994 | } | |
1995 | } | |
1996 | ||
08fd81c9 DS |
1997 | commit_lock_file(&lk); |
1998 | ||
238def57 DS |
1999 | return 0; |
2000 | } | |
2001 | ||
1771be90 DS |
2002 | static void split_graph_merge_strategy(struct write_commit_graph_context *ctx) |
2003 | { | |
8da02ce6 AH |
2004 | struct commit_graph *g; |
2005 | uint32_t num_commits; | |
fdbde82f | 2006 | enum commit_graph_split_flags flags = COMMIT_GRAPH_SPLIT_UNSPECIFIED; |
1771be90 DS |
2007 | uint32_t i; |
2008 | ||
c2bc6e6a DS |
2009 | int max_commits = 0; |
2010 | int size_mult = 2; | |
2011 | ||
98bb7961 TB |
2012 | if (ctx->opts) { |
2013 | max_commits = ctx->opts->max_commits; | |
63020f17 | 2014 | |
98bb7961 TB |
2015 | if (ctx->opts->size_multiple) |
2016 | size_mult = ctx->opts->size_multiple; | |
fdbde82f | 2017 | |
98bb7961 | 2018 | flags = ctx->opts->split_flags; |
c2bc6e6a DS |
2019 | } |
2020 | ||
1771be90 | 2021 | g = ctx->r->objects->commit_graph; |
8da02ce6 | 2022 | num_commits = ctx->commits.nr; |
8a6ac287 TB |
2023 | if (flags == COMMIT_GRAPH_SPLIT_REPLACE) |
2024 | ctx->num_commit_graphs_after = 1; | |
2025 | else | |
2026 | ctx->num_commit_graphs_after = ctx->num_commit_graphs_before + 1; | |
1771be90 | 2027 | |
8a6ac287 TB |
2028 | if (flags != COMMIT_GRAPH_SPLIT_MERGE_PROHIBITED && |
2029 | flags != COMMIT_GRAPH_SPLIT_REPLACE) { | |
fdbde82f TB |
2030 | while (g && (g->num_commits <= size_mult * num_commits || |
2031 | (max_commits && num_commits > max_commits))) { | |
2032 | if (g->odb != ctx->odb) | |
2033 | break; | |
c523035c | 2034 | |
fdbde82f TB |
2035 | num_commits += g->num_commits; |
2036 | g = g->base_graph; | |
1771be90 | 2037 | |
fdbde82f TB |
2038 | ctx->num_commit_graphs_after--; |
2039 | } | |
1771be90 DS |
2040 | } |
2041 | ||
8a6ac287 TB |
2042 | if (flags != COMMIT_GRAPH_SPLIT_REPLACE) |
2043 | ctx->new_base_graph = g; | |
2044 | else if (ctx->num_commit_graphs_after != 1) | |
2045 | BUG("split_graph_merge_strategy: num_commit_graphs_after " | |
2046 | "should be 1 with --split=replace"); | |
1771be90 | 2047 | |
c523035c | 2048 | if (ctx->num_commit_graphs_after == 2) { |
ad2dd5bb | 2049 | char *old_graph_name = get_commit_graph_filename(g->odb); |
c523035c DS |
2050 | |
2051 | if (!strcmp(g->filename, old_graph_name) && | |
ad2dd5bb | 2052 | g->odb != ctx->odb) { |
c523035c DS |
2053 | ctx->num_commit_graphs_after = 1; |
2054 | ctx->new_base_graph = NULL; | |
2055 | } | |
2056 | ||
2057 | free(old_graph_name); | |
2058 | } | |
2059 | ||
b78a556a TB |
2060 | CALLOC_ARRAY(ctx->commit_graph_filenames_after, ctx->num_commit_graphs_after); |
2061 | CALLOC_ARRAY(ctx->commit_graph_hash_after, ctx->num_commit_graphs_after); | |
1771be90 DS |
2062 | |
2063 | for (i = 0; i < ctx->num_commit_graphs_after && | |
2064 | i < ctx->num_commit_graphs_before; i++) | |
2065 | ctx->commit_graph_filenames_after[i] = xstrdup(ctx->commit_graph_filenames_before[i]); | |
2066 | ||
2067 | i = ctx->num_commit_graphs_before - 1; | |
2068 | g = ctx->r->objects->commit_graph; | |
2069 | ||
2070 | while (g) { | |
2071 | if (i < ctx->num_commit_graphs_after) | |
2072 | ctx->commit_graph_hash_after[i] = xstrdup(oid_to_hex(&g->oid)); | |
2073 | ||
1fdc383c AK |
2074 | /* |
2075 | * If the topmost remaining layer has generation data chunk, the | |
2076 | * resultant layer also has generation data chunk. | |
2077 | */ | |
2078 | if (i == ctx->num_commit_graphs_after - 2) | |
2079 | ctx->write_generation_data = !!g->chunk_generation_data; | |
2080 | ||
1771be90 DS |
2081 | i--; |
2082 | g = g->base_graph; | |
2083 | } | |
2084 | } | |
2085 | ||
2086 | static void merge_commit_graph(struct write_commit_graph_context *ctx, | |
2087 | struct commit_graph *g) | |
2088 | { | |
2089 | uint32_t i; | |
2090 | uint32_t offset = g->num_commits_in_base; | |
2091 | ||
2092 | ALLOC_GROW(ctx->commits.list, ctx->commits.nr + g->num_commits, ctx->commits.alloc); | |
2093 | ||
2094 | for (i = 0; i < g->num_commits; i++) { | |
2095 | struct object_id oid; | |
2096 | struct commit *result; | |
2097 | ||
2098 | display_progress(ctx->progress, i + 1); | |
2099 | ||
2100 | load_oid_from_graph(g, i + offset, &oid); | |
2101 | ||
2102 | /* only add commits if they still exist in the repo */ | |
2103 | result = lookup_commit_reference_gently(ctx->r, &oid, 1); | |
2104 | ||
2105 | if (result) { | |
2106 | ctx->commits.list[ctx->commits.nr] = result; | |
2107 | ctx->commits.nr++; | |
2108 | } | |
2109 | } | |
2110 | } | |
2111 | ||
2112 | static int commit_compare(const void *_a, const void *_b) | |
2113 | { | |
2114 | const struct commit *a = *(const struct commit **)_a; | |
2115 | const struct commit *b = *(const struct commit **)_b; | |
2116 | return oidcmp(&a->object.oid, &b->object.oid); | |
2117 | } | |
2118 | ||
2119 | static void sort_and_scan_merged_commits(struct write_commit_graph_context *ctx) | |
2120 | { | |
150f1157 | 2121 | uint32_t i, dedup_i = 0; |
1771be90 DS |
2122 | |
2123 | if (ctx->report_progress) | |
2124 | ctx->progress = start_delayed_progress( | |
2125 | _("Scanning merged commits"), | |
2126 | ctx->commits.nr); | |
2127 | ||
2128 | QSORT(ctx->commits.list, ctx->commits.nr, commit_compare); | |
2129 | ||
2130 | ctx->num_extra_edges = 0; | |
2131 | for (i = 0; i < ctx->commits.nr; i++) { | |
40112249 | 2132 | display_progress(ctx->progress, i + 1); |
1771be90 DS |
2133 | |
2134 | if (i && oideq(&ctx->commits.list[i - 1]->object.oid, | |
2135 | &ctx->commits.list[i]->object.oid)) { | |
150f1157 DS |
2136 | /* |
2137 | * Silently ignore duplicates. These were likely | |
2138 | * created due to a commit appearing in multiple | |
2139 | * layers of the chain, which is unexpected but | |
2140 | * not invalid. We should make sure there is a | |
2141 | * unique copy in the new layer. | |
2142 | */ | |
1771be90 | 2143 | } else { |
689a146c | 2144 | unsigned int num_parents; |
1771be90 | 2145 | |
150f1157 DS |
2146 | ctx->commits.list[dedup_i] = ctx->commits.list[i]; |
2147 | dedup_i++; | |
2148 | ||
689a146c | 2149 | num_parents = commit_list_count(ctx->commits.list[i]->parents); |
1771be90 | 2150 | if (num_parents > 2) |
a35bea40 | 2151 | ctx->num_extra_edges += num_parents - 1; |
1771be90 DS |
2152 | } |
2153 | } | |
2154 | ||
150f1157 DS |
2155 | ctx->commits.nr = dedup_i; |
2156 | ||
1771be90 DS |
2157 | stop_progress(&ctx->progress); |
2158 | } | |
2159 | ||
2160 | static void merge_commit_graphs(struct write_commit_graph_context *ctx) | |
2161 | { | |
2162 | struct commit_graph *g = ctx->r->objects->commit_graph; | |
2163 | uint32_t current_graph_number = ctx->num_commit_graphs_before; | |
1771be90 DS |
2164 | |
2165 | while (g && current_graph_number >= ctx->num_commit_graphs_after) { | |
2166 | current_graph_number--; | |
2167 | ||
d68ce906 RS |
2168 | if (ctx->report_progress) |
2169 | ctx->progress = start_delayed_progress(_("Merging commit-graph"), 0); | |
1771be90 DS |
2170 | |
2171 | merge_commit_graph(ctx, g); | |
2172 | stop_progress(&ctx->progress); | |
1771be90 DS |
2173 | |
2174 | g = g->base_graph; | |
2175 | } | |
2176 | ||
2177 | if (g) { | |
2178 | ctx->new_base_graph = g; | |
2179 | ctx->new_num_commits_in_base = g->num_commits + g->num_commits_in_base; | |
2180 | } | |
2181 | ||
2182 | if (ctx->new_base_graph) | |
2183 | ctx->base_graph_name = xstrdup(ctx->new_base_graph->filename); | |
2184 | ||
2185 | sort_and_scan_merged_commits(ctx); | |
2186 | } | |
2187 | ||
8d84097f DS |
2188 | static void mark_commit_graphs(struct write_commit_graph_context *ctx) |
2189 | { | |
2190 | uint32_t i; | |
2191 | time_t now = time(NULL); | |
2192 | ||
2193 | for (i = ctx->num_commit_graphs_after - 1; i < ctx->num_commit_graphs_before; i++) { | |
2194 | struct stat st; | |
2195 | struct utimbuf updated_time; | |
2196 | ||
2197 | stat(ctx->commit_graph_filenames_before[i], &st); | |
2198 | ||
2199 | updated_time.actime = st.st_atime; | |
2200 | updated_time.modtime = now; | |
2201 | utime(ctx->commit_graph_filenames_before[i], &updated_time); | |
2202 | } | |
2203 | } | |
2204 | ||
2205 | static void expire_commit_graphs(struct write_commit_graph_context *ctx) | |
2206 | { | |
2207 | struct strbuf path = STRBUF_INIT; | |
2208 | DIR *dir; | |
2209 | struct dirent *de; | |
2210 | size_t dirnamelen; | |
c2bc6e6a DS |
2211 | timestamp_t expire_time = time(NULL); |
2212 | ||
98bb7961 TB |
2213 | if (ctx->opts && ctx->opts->expire_time) |
2214 | expire_time = ctx->opts->expire_time; | |
ba41112a | 2215 | if (!ctx->split) { |
663b2b1b | 2216 | char *chain_file_name = get_commit_graph_chain_filename(ctx->odb); |
ba41112a DS |
2217 | unlink(chain_file_name); |
2218 | free(chain_file_name); | |
2219 | ctx->num_commit_graphs_after = 0; | |
2220 | } | |
8d84097f | 2221 | |
0bd52e27 | 2222 | strbuf_addstr(&path, ctx->odb->path); |
8d84097f DS |
2223 | strbuf_addstr(&path, "/info/commit-graphs"); |
2224 | dir = opendir(path.buf); | |
2225 | ||
0aa6bce7 RS |
2226 | if (!dir) |
2227 | goto out; | |
8d84097f DS |
2228 | |
2229 | strbuf_addch(&path, '/'); | |
2230 | dirnamelen = path.len; | |
2231 | while ((de = readdir(dir)) != NULL) { | |
2232 | struct stat st; | |
2233 | uint32_t i, found = 0; | |
2234 | ||
2235 | strbuf_setlen(&path, dirnamelen); | |
2236 | strbuf_addstr(&path, de->d_name); | |
2237 | ||
2238 | stat(path.buf, &st); | |
2239 | ||
2240 | if (st.st_mtime > expire_time) | |
2241 | continue; | |
2242 | if (path.len < 6 || strcmp(path.buf + path.len - 6, ".graph")) | |
2243 | continue; | |
2244 | ||
2245 | for (i = 0; i < ctx->num_commit_graphs_after; i++) { | |
2246 | if (!strcmp(ctx->commit_graph_filenames_after[i], | |
2247 | path.buf)) { | |
2248 | found = 1; | |
2249 | break; | |
2250 | } | |
2251 | } | |
2252 | ||
2253 | if (!found) | |
2254 | unlink(path.buf); | |
8d84097f | 2255 | } |
0aa6bce7 RS |
2256 | |
2257 | out: | |
2258 | strbuf_release(&path); | |
8d84097f DS |
2259 | } |
2260 | ||
0bd52e27 | 2261 | int write_commit_graph(struct object_directory *odb, |
238def57 | 2262 | struct string_list *pack_indexes, |
6830c360 | 2263 | struct oidset *commits, |
39d88318 | 2264 | enum commit_graph_write_flags flags, |
98bb7961 | 2265 | const struct commit_graph_opts *opts) |
238def57 | 2266 | { |
c7ef8fe6 | 2267 | struct repository *r = the_repository; |
238def57 | 2268 | struct write_commit_graph_context *ctx; |
1cbdbf3b | 2269 | uint32_t i; |
e103f727 | 2270 | int res = 0; |
8a6ac287 | 2271 | int replace = 0; |
9a7a9ed1 | 2272 | struct bloom_filter_settings bloom_settings = DEFAULT_BLOOM_FILTER_SETTINGS; |
72a2bfca | 2273 | struct topo_level_slab topo_levels; |
08fd81c9 | 2274 | |
c7ef8fe6 DS |
2275 | prepare_repo_settings(r); |
2276 | if (!r->settings.core_commit_graph) { | |
85102ac7 DS |
2277 | warning(_("attempting to write a commit-graph, but 'core.commitGraph' is disabled")); |
2278 | return 0; | |
2279 | } | |
c7ef8fe6 | 2280 | if (!commit_graph_compatible(r)) |
e103f727 | 2281 | return 0; |
d6538246 | 2282 | |
ca56dadb | 2283 | CALLOC_ARRAY(ctx, 1); |
c7ef8fe6 | 2284 | ctx->r = r; |
0bd52e27 | 2285 | ctx->odb = odb; |
39d88318 SG |
2286 | ctx->append = flags & COMMIT_GRAPH_WRITE_APPEND ? 1 : 0; |
2287 | ctx->report_progress = flags & COMMIT_GRAPH_WRITE_PROGRESS ? 1 : 0; | |
2288 | ctx->split = flags & COMMIT_GRAPH_WRITE_SPLIT ? 1 : 0; | |
98bb7961 | 2289 | ctx->opts = opts; |
f97b9325 | 2290 | ctx->total_bloom_filter_data_size = 0; |
702110aa | 2291 | ctx->write_generation_data = (get_configured_generation_version(r) == 2); |
e8b63005 | 2292 | ctx->num_generation_data_overflows = 0; |
6c622f9f | 2293 | |
9a7a9ed1 TB |
2294 | bloom_settings.bits_per_entry = git_env_ulong("GIT_TEST_BLOOM_SETTINGS_BITS_PER_ENTRY", |
2295 | bloom_settings.bits_per_entry); | |
2296 | bloom_settings.num_hashes = git_env_ulong("GIT_TEST_BLOOM_SETTINGS_NUM_HASHES", | |
2297 | bloom_settings.num_hashes); | |
2298 | bloom_settings.max_changed_paths = git_env_ulong("GIT_TEST_BLOOM_SETTINGS_MAX_CHANGED_PATHS", | |
2299 | bloom_settings.max_changed_paths); | |
2300 | ctx->bloom_settings = &bloom_settings; | |
2301 | ||
72a2bfca AK |
2302 | init_topo_level_slab(&topo_levels); |
2303 | ctx->topo_levels = &topo_levels; | |
2304 | ||
bc50d6c9 | 2305 | prepare_commit_graph(ctx->r); |
72a2bfca AK |
2306 | if (ctx->r->objects->commit_graph) { |
2307 | struct commit_graph *g = ctx->r->objects->commit_graph; | |
2308 | ||
2309 | while (g) { | |
2310 | g->topo_levels = &topo_levels; | |
2311 | g = g->base_graph; | |
2312 | } | |
2313 | } | |
2314 | ||
0087a87b DS |
2315 | if (flags & COMMIT_GRAPH_WRITE_BLOOM_FILTERS) |
2316 | ctx->changed_paths = 1; | |
2317 | if (!(flags & COMMIT_GRAPH_NO_WRITE_BLOOM_FILTERS)) { | |
2318 | struct commit_graph *g; | |
0087a87b DS |
2319 | |
2320 | g = ctx->r->objects->commit_graph; | |
2321 | ||
2322 | /* We have changed-paths already. Keep them in the next graph */ | |
2323 | if (g && g->chunk_bloom_data) { | |
2324 | ctx->changed_paths = 1; | |
2325 | ctx->bloom_settings = g->bloom_filter_settings; | |
2326 | } | |
2327 | } | |
2328 | ||
6c622f9f | 2329 | if (ctx->split) { |
bc50d6c9 | 2330 | struct commit_graph *g = ctx->r->objects->commit_graph; |
6c622f9f DS |
2331 | |
2332 | while (g) { | |
2333 | ctx->num_commit_graphs_before++; | |
2334 | g = g->base_graph; | |
2335 | } | |
2336 | ||
2337 | if (ctx->num_commit_graphs_before) { | |
2338 | ALLOC_ARRAY(ctx->commit_graph_filenames_before, ctx->num_commit_graphs_before); | |
2339 | i = ctx->num_commit_graphs_before; | |
2340 | g = ctx->r->objects->commit_graph; | |
2341 | ||
2342 | while (g) { | |
2343 | ctx->commit_graph_filenames_before[--i] = xstrdup(g->filename); | |
2344 | g = g->base_graph; | |
2345 | } | |
2346 | } | |
8a6ac287 | 2347 | |
98bb7961 TB |
2348 | if (ctx->opts) |
2349 | replace = ctx->opts->split_flags & COMMIT_GRAPH_SPLIT_REPLACE; | |
6c622f9f | 2350 | } |
c9905bea DS |
2351 | |
2352 | ctx->approx_nr_objects = approximate_object_count(); | |
c9905bea | 2353 | |
c9905bea DS |
2354 | if (ctx->append && ctx->r->objects->commit_graph) { |
2355 | struct commit_graph *g = ctx->r->objects->commit_graph; | |
2356 | for (i = 0; i < g->num_commits; i++) { | |
a5f1c448 | 2357 | struct object_id oid; |
92e2cab9 | 2358 | oidread(&oid, g->chunk_oid_lookup + g->hash_len * i); |
a5f1c448 | 2359 | oid_array_append(&ctx->oids, &oid); |
7547b95b DS |
2360 | } |
2361 | } | |
2362 | ||
049d51a2 | 2363 | if (pack_indexes) { |
3d112755 | 2364 | ctx->order_by_pack = 1; |
ef5b83f2 DS |
2365 | if ((res = fill_oids_from_packs(ctx, pack_indexes))) |
2366 | goto cleanup; | |
3d5df01b DS |
2367 | } |
2368 | ||
6830c360 TB |
2369 | if (commits) { |
2370 | if ((res = fill_oids_from_commits(ctx, commits))) | |
7c5c9b9c SG |
2371 | goto cleanup; |
2372 | } | |
3d5df01b | 2373 | |
9b6606f4 | 2374 | if (!pack_indexes && !commits) { |
3d112755 | 2375 | ctx->order_by_pack = 1; |
b2c83060 | 2376 | fill_oids_from_all_packs(ctx); |
3d112755 | 2377 | } |
049d51a2 | 2378 | |
c9905bea | 2379 | close_reachable(ctx); |
08fd81c9 | 2380 | |
f998d542 | 2381 | copy_oids_to_commits(ctx); |
08fd81c9 | 2382 | |
c9905bea | 2383 | if (ctx->commits.nr >= GRAPH_EDGE_LAST_MASK) { |
e103f727 DS |
2384 | error(_("too many commits to write graph")); |
2385 | res = -1; | |
2386 | goto cleanup; | |
2387 | } | |
08fd81c9 | 2388 | |
8a6ac287 | 2389 | if (!ctx->commits.nr && !replace) |
6c622f9f DS |
2390 | goto cleanup; |
2391 | ||
1771be90 DS |
2392 | if (ctx->split) { |
2393 | split_graph_merge_strategy(ctx); | |
2394 | ||
8a6ac287 TB |
2395 | if (!replace) |
2396 | merge_commit_graphs(ctx); | |
1771be90 | 2397 | } else |
6c622f9f DS |
2398 | ctx->num_commit_graphs_after = 1; |
2399 | ||
fde55b09 | 2400 | ctx->trust_generation_numbers = validate_mixed_generation_chain(ctx->r->objects->commit_graph); |
1fdc383c | 2401 | |
9c2c0a82 DS |
2402 | compute_topological_levels(ctx); |
2403 | if (ctx->write_generation_data) | |
2404 | compute_generation_numbers(ctx); | |
08fd81c9 | 2405 | |
f97b9325 GS |
2406 | if (ctx->changed_paths) |
2407 | compute_bloom_filters(ctx); | |
2408 | ||
238def57 | 2409 | res = write_commit_graph_file(ctx); |
08fd81c9 | 2410 | |
ba41112a | 2411 | if (ctx->split) |
8d84097f | 2412 | mark_commit_graphs(ctx); |
ba41112a DS |
2413 | |
2414 | expire_commit_graphs(ctx); | |
8d84097f | 2415 | |
e103f727 | 2416 | cleanup: |
238def57 | 2417 | free(ctx->graph_name); |
c9905bea | 2418 | free(ctx->commits.list); |
a5f1c448 | 2419 | oid_array_clear(&ctx->oids); |
bf4bb9f9 | 2420 | clear_topo_level_slab(&topo_levels); |
6c622f9f DS |
2421 | |
2422 | if (ctx->commit_graph_filenames_after) { | |
2423 | for (i = 0; i < ctx->num_commit_graphs_after; i++) { | |
2424 | free(ctx->commit_graph_filenames_after[i]); | |
2425 | free(ctx->commit_graph_hash_after[i]); | |
2426 | } | |
2427 | ||
2428 | for (i = 0; i < ctx->num_commit_graphs_before; i++) | |
2429 | free(ctx->commit_graph_filenames_before[i]); | |
2430 | ||
2431 | free(ctx->commit_graph_filenames_after); | |
2432 | free(ctx->commit_graph_filenames_before); | |
2433 | free(ctx->commit_graph_hash_after); | |
2434 | } | |
2435 | ||
c9905bea | 2436 | free(ctx); |
e103f727 DS |
2437 | |
2438 | return res; | |
08fd81c9 | 2439 | } |
283e68c7 | 2440 | |
41df0e30 | 2441 | #define VERIFY_COMMIT_GRAPH_ERROR_HASH 2 |
283e68c7 DS |
2442 | static int verify_commit_graph_error; |
2443 | ||
48ca53ca | 2444 | __attribute__((format (printf, 1, 2))) |
283e68c7 DS |
2445 | static void graph_report(const char *fmt, ...) |
2446 | { | |
2447 | va_list ap; | |
2448 | ||
2449 | verify_commit_graph_error = 1; | |
2450 | va_start(ap, fmt); | |
2451 | vfprintf(stderr, fmt, ap); | |
2452 | fprintf(stderr, "\n"); | |
2453 | va_end(ap); | |
2454 | } | |
2455 | ||
1373e547 DS |
2456 | #define GENERATION_ZERO_EXISTS 1 |
2457 | #define GENERATION_NUMBER_EXISTS 2 | |
2458 | ||
15316a47 TB |
2459 | static int commit_graph_checksum_valid(struct commit_graph *g) |
2460 | { | |
2461 | return hashfile_checksum_valid(g->data, g->data_len); | |
2462 | } | |
2463 | ||
3da4b609 | 2464 | int verify_commit_graph(struct repository *r, struct commit_graph *g, int flags) |
283e68c7 | 2465 | { |
9bda8467 | 2466 | uint32_t i, cur_fanout_pos = 0; |
72871b13 | 2467 | struct object_id prev_oid, cur_oid; |
1373e547 | 2468 | int generation_zero = 0; |
1f7f557f | 2469 | struct progress *progress = NULL; |
3da4b609 | 2470 | int local_error = 0; |
9bda8467 | 2471 | |
283e68c7 DS |
2472 | if (!g) { |
2473 | graph_report("no commit-graph file loaded"); | |
2474 | return 1; | |
2475 | } | |
2476 | ||
2ac138d5 | 2477 | verify_commit_graph_error = verify_commit_graph_lite(g); |
9bda8467 DS |
2478 | if (verify_commit_graph_error) |
2479 | return verify_commit_graph_error; | |
2480 | ||
15316a47 | 2481 | if (!commit_graph_checksum_valid(g)) { |
41df0e30 DS |
2482 | graph_report(_("the commit-graph file has incorrect checksum and is likely corrupt")); |
2483 | verify_commit_graph_error = VERIFY_COMMIT_GRAPH_ERROR_HASH; | |
2484 | } | |
2485 | ||
9bda8467 | 2486 | for (i = 0; i < g->num_commits; i++) { |
2e3c0737 DS |
2487 | struct commit *graph_commit; |
2488 | ||
92e2cab9 | 2489 | oidread(&cur_oid, g->chunk_oid_lookup + g->hash_len * i); |
9bda8467 DS |
2490 | |
2491 | if (i && oidcmp(&prev_oid, &cur_oid) >= 0) | |
93b4405f | 2492 | graph_report(_("commit-graph has incorrect OID order: %s then %s"), |
9bda8467 DS |
2493 | oid_to_hex(&prev_oid), |
2494 | oid_to_hex(&cur_oid)); | |
2495 | ||
2496 | oidcpy(&prev_oid, &cur_oid); | |
2497 | ||
2498 | while (cur_oid.hash[0] > cur_fanout_pos) { | |
2499 | uint32_t fanout_value = get_be32(g->chunk_oid_fanout + cur_fanout_pos); | |
2500 | ||
2501 | if (i != fanout_value) | |
93b4405f | 2502 | graph_report(_("commit-graph has incorrect fanout value: fanout[%d] = %u != %u"), |
9bda8467 DS |
2503 | cur_fanout_pos, fanout_value, i); |
2504 | cur_fanout_pos++; | |
2505 | } | |
2e3c0737 | 2506 | |
82952964 | 2507 | graph_commit = lookup_commit(r, &cur_oid); |
4f542b7a | 2508 | if (!parse_commit_in_graph_one(r, g, graph_commit)) |
93b4405f | 2509 | graph_report(_("failed to parse commit %s from commit-graph"), |
2e3c0737 | 2510 | oid_to_hex(&cur_oid)); |
9bda8467 DS |
2511 | } |
2512 | ||
2513 | while (cur_fanout_pos < 256) { | |
2514 | uint32_t fanout_value = get_be32(g->chunk_oid_fanout + cur_fanout_pos); | |
2515 | ||
2516 | if (g->num_commits != fanout_value) | |
93b4405f | 2517 | graph_report(_("commit-graph has incorrect fanout value: fanout[%d] = %u != %u"), |
9bda8467 DS |
2518 | cur_fanout_pos, fanout_value, i); |
2519 | ||
2520 | cur_fanout_pos++; | |
2521 | } | |
2522 | ||
41df0e30 | 2523 | if (verify_commit_graph_error & ~VERIFY_COMMIT_GRAPH_ERROR_HASH) |
96af91d4 DS |
2524 | return verify_commit_graph_error; |
2525 | ||
73716122 GS |
2526 | if (flags & COMMIT_GRAPH_WRITE_PROGRESS) |
2527 | progress = start_progress(_("Verifying commits in commit graph"), | |
2528 | g->num_commits); | |
2529 | ||
96af91d4 | 2530 | for (i = 0; i < g->num_commits; i++) { |
2e3c0737 | 2531 | struct commit *graph_commit, *odb_commit; |
53614b13 | 2532 | struct commit_list *graph_parents, *odb_parents; |
d7f92784 AK |
2533 | timestamp_t max_generation = 0; |
2534 | timestamp_t generation; | |
96af91d4 | 2535 | |
1f7f557f | 2536 | display_progress(progress, i + 1); |
92e2cab9 | 2537 | oidread(&cur_oid, g->chunk_oid_lookup + g->hash_len * i); |
96af91d4 | 2538 | |
82952964 | 2539 | graph_commit = lookup_commit(r, &cur_oid); |
a378509e | 2540 | odb_commit = (struct commit *)create_object(r, &cur_oid, alloc_commit_node(r)); |
96af91d4 | 2541 | if (parse_commit_internal(odb_commit, 0, 0)) { |
93b4405f | 2542 | graph_report(_("failed to parse commit %s from object database for commit-graph"), |
96af91d4 DS |
2543 | oid_to_hex(&cur_oid)); |
2544 | continue; | |
2545 | } | |
2e3c0737 | 2546 | |
4f542b7a | 2547 | if (!oideq(&get_commit_tree_in_graph_one(r, g, graph_commit)->object.oid, |
2e3c0737 | 2548 | get_commit_tree_oid(odb_commit))) |
93b4405f | 2549 | graph_report(_("root tree OID for commit %s in commit-graph is %s != %s"), |
2e3c0737 DS |
2550 | oid_to_hex(&cur_oid), |
2551 | oid_to_hex(get_commit_tree_oid(graph_commit)), | |
2552 | oid_to_hex(get_commit_tree_oid(odb_commit))); | |
53614b13 DS |
2553 | |
2554 | graph_parents = graph_commit->parents; | |
2555 | odb_parents = odb_commit->parents; | |
2556 | ||
2557 | while (graph_parents) { | |
2558 | if (odb_parents == NULL) { | |
93b4405f | 2559 | graph_report(_("commit-graph parent list for commit %s is too long"), |
53614b13 DS |
2560 | oid_to_hex(&cur_oid)); |
2561 | break; | |
2562 | } | |
2563 | ||
3da4b609 DS |
2564 | /* parse parent in case it is in a base graph */ |
2565 | parse_commit_in_graph_one(r, g, graph_parents->item); | |
2566 | ||
9001dc2a | 2567 | if (!oideq(&graph_parents->item->object.oid, &odb_parents->item->object.oid)) |
93b4405f | 2568 | graph_report(_("commit-graph parent for %s is %s != %s"), |
53614b13 DS |
2569 | oid_to_hex(&cur_oid), |
2570 | oid_to_hex(&graph_parents->item->object.oid), | |
2571 | oid_to_hex(&odb_parents->item->object.oid)); | |
2572 | ||
c752ad09 AK |
2573 | generation = commit_graph_generation(graph_parents->item); |
2574 | if (generation > max_generation) | |
2575 | max_generation = generation; | |
1373e547 | 2576 | |
53614b13 DS |
2577 | graph_parents = graph_parents->next; |
2578 | odb_parents = odb_parents->next; | |
2579 | } | |
2580 | ||
2581 | if (odb_parents != NULL) | |
93b4405f | 2582 | graph_report(_("commit-graph parent list for commit %s terminates early"), |
53614b13 | 2583 | oid_to_hex(&cur_oid)); |
1373e547 | 2584 | |
c49c82aa | 2585 | if (!commit_graph_generation(graph_commit)) { |
1373e547 | 2586 | if (generation_zero == GENERATION_NUMBER_EXISTS) |
93b4405f | 2587 | graph_report(_("commit-graph has generation number zero for commit %s, but non-zero elsewhere"), |
1373e547 DS |
2588 | oid_to_hex(&cur_oid)); |
2589 | generation_zero = GENERATION_ZERO_EXISTS; | |
2590 | } else if (generation_zero == GENERATION_ZERO_EXISTS) | |
93b4405f | 2591 | graph_report(_("commit-graph has non-zero generation number for commit %s, but zero elsewhere"), |
1373e547 DS |
2592 | oid_to_hex(&cur_oid)); |
2593 | ||
2594 | if (generation_zero == GENERATION_ZERO_EXISTS) | |
2595 | continue; | |
2596 | ||
2597 | /* | |
e8b63005 AK |
2598 | * If we are using topological level and one of our parents has |
2599 | * generation GENERATION_NUMBER_V1_MAX, then our generation is | |
2600 | * also GENERATION_NUMBER_V1_MAX. Decrement to avoid extra logic | |
2601 | * in the following condition. | |
1373e547 | 2602 | */ |
1fdc383c | 2603 | if (!g->read_generation_data && max_generation == GENERATION_NUMBER_V1_MAX) |
1373e547 DS |
2604 | max_generation--; |
2605 | ||
c752ad09 | 2606 | generation = commit_graph_generation(graph_commit); |
e8b63005 AK |
2607 | if (generation < max_generation + 1) |
2608 | graph_report(_("commit-graph generation for commit %s is %"PRItime" < %"PRItime), | |
1373e547 | 2609 | oid_to_hex(&cur_oid), |
c752ad09 | 2610 | generation, |
1373e547 | 2611 | max_generation + 1); |
88968ebf DS |
2612 | |
2613 | if (graph_commit->date != odb_commit->date) | |
93b4405f | 2614 | graph_report(_("commit date for commit %s in commit-graph is %"PRItime" != %"PRItime), |
88968ebf DS |
2615 | oid_to_hex(&cur_oid), |
2616 | graph_commit->date, | |
2617 | odb_commit->date); | |
96af91d4 | 2618 | } |
1f7f557f | 2619 | stop_progress(&progress); |
96af91d4 | 2620 | |
3da4b609 DS |
2621 | local_error = verify_commit_graph_error; |
2622 | ||
2623 | if (!(flags & COMMIT_GRAPH_VERIFY_SHALLOW) && g->base_graph) | |
2624 | local_error |= verify_commit_graph(r, g->base_graph, flags); | |
2625 | ||
2626 | return local_error; | |
283e68c7 | 2627 | } |
c3756d5b JT |
2628 | |
2629 | void free_commit_graph(struct commit_graph *g) | |
2630 | { | |
2631 | if (!g) | |
2632 | return; | |
c8828530 | 2633 | if (g->data) { |
c3756d5b JT |
2634 | munmap((void *)g->data, g->data_len); |
2635 | g->data = NULL; | |
c3756d5b | 2636 | } |
6c622f9f | 2637 | free(g->filename); |
76ffbca7 | 2638 | free(g->bloom_filter_settings); |
c3756d5b JT |
2639 | free(g); |
2640 | } | |
6abada18 JK |
2641 | |
2642 | void disable_commit_graph(struct repository *r) | |
2643 | { | |
2644 | r->commit_graph_disabled = 1; | |
2645 | } |