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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 DS |
9 | #include "revision.h" |
10 | #include "sha1-lookup.h" | |
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" | |
08fd81c9 | 22 | |
b23ea979 DS |
23 | void git_test_write_commit_graph_or_die(void) |
24 | { | |
25 | int flags = 0; | |
26 | if (!git_env_bool(GIT_TEST_COMMIT_GRAPH, 0)) | |
27 | return; | |
28 | ||
29 | if (git_env_bool(GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS, 0)) | |
30 | flags = COMMIT_GRAPH_WRITE_BLOOM_FILTERS; | |
31 | ||
32 | if (write_commit_graph_reachable(the_repository->objects->odb, | |
33 | flags, NULL)) | |
34 | die("failed to write commit-graph under GIT_TEST_COMMIT_GRAPH"); | |
35 | } | |
36 | ||
08fd81c9 DS |
37 | #define GRAPH_SIGNATURE 0x43475048 /* "CGPH" */ |
38 | #define GRAPH_CHUNKID_OIDFANOUT 0x4f494446 /* "OIDF" */ | |
39 | #define GRAPH_CHUNKID_OIDLOOKUP 0x4f49444c /* "OIDL" */ | |
40 | #define GRAPH_CHUNKID_DATA 0x43444154 /* "CDAT" */ | |
e8b63005 AK |
41 | #define GRAPH_CHUNKID_GENERATION_DATA 0x47444154 /* "GDAT" */ |
42 | #define GRAPH_CHUNKID_GENERATION_DATA_OVERFLOW 0x47444f56 /* "GDOV" */ | |
5af7417b | 43 | #define GRAPH_CHUNKID_EXTRAEDGES 0x45444745 /* "EDGE" */ |
76ffbca7 GS |
44 | #define GRAPH_CHUNKID_BLOOMINDEXES 0x42494458 /* "BIDX" */ |
45 | #define GRAPH_CHUNKID_BLOOMDATA 0x42444154 /* "BDAT" */ | |
118bd570 | 46 | #define GRAPH_CHUNKID_BASE 0x42415345 /* "BASE" */ |
e8b63005 | 47 | #define MAX_NUM_CHUNKS 9 |
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 DS |
61 | #define GRAPH_FANOUT_SIZE (4 * 256) |
62 | #define GRAPH_CHUNKLOOKUP_WIDTH 12 | |
0e3b97cc | 63 | #define GRAPH_MIN_SIZE (GRAPH_HEADER_SIZE + 4 * GRAPH_CHUNKLOOKUP_WIDTH \ |
c1665998 | 64 | + GRAPH_FANOUT_SIZE + the_hash_algo->rawsz) |
08fd81c9 | 65 | |
e8b63005 AK |
66 | #define CORRECTED_COMMIT_DATE_OFFSET_OVERFLOW (1ULL << 31) |
67 | ||
cb99a34e DS |
68 | /* Remember to update object flag allocation in object.h */ |
69 | #define REACHABLE (1u<<15) | |
70 | ||
72a2bfca AK |
71 | define_commit_slab(topo_level_slab, uint32_t); |
72 | ||
d21ee7d1 JK |
73 | /* Keep track of the order in which commits are added to our list. */ |
74 | define_commit_slab(commit_pos, int); | |
75 | static struct commit_pos commit_pos = COMMIT_SLAB_INIT(1, commit_pos); | |
76 | ||
77 | static void set_commit_pos(struct repository *r, const struct object_id *oid) | |
78 | { | |
79 | static int32_t max_pos; | |
80 | struct commit *commit = lookup_commit(r, oid); | |
81 | ||
82 | if (!commit) | |
83 | return; /* should never happen, but be lenient */ | |
84 | ||
85 | *commit_pos_at(&commit_pos, commit) = max_pos++; | |
86 | } | |
87 | ||
88 | static int commit_pos_cmp(const void *va, const void *vb) | |
08fd81c9 | 89 | { |
d21ee7d1 JK |
90 | const struct commit *a = *(const struct commit **)va; |
91 | const struct commit *b = *(const struct commit **)vb; | |
92 | return commit_pos_at(&commit_pos, a) - | |
93 | commit_pos_at(&commit_pos, b); | |
94 | } | |
95 | ||
4844812b AK |
96 | define_commit_slab(commit_graph_data_slab, struct commit_graph_data); |
97 | static struct commit_graph_data_slab commit_graph_data_slab = | |
98 | COMMIT_SLAB_INIT(1, commit_graph_data_slab); | |
99 | ||
100 | uint32_t commit_graph_position(const struct commit *c) | |
101 | { | |
102 | struct commit_graph_data *data = | |
103 | commit_graph_data_slab_peek(&commit_graph_data_slab, c); | |
104 | ||
105 | return data ? data->graph_pos : COMMIT_NOT_FROM_GRAPH; | |
106 | } | |
107 | ||
d7f92784 | 108 | timestamp_t commit_graph_generation(const struct commit *c) |
4844812b AK |
109 | { |
110 | struct commit_graph_data *data = | |
111 | commit_graph_data_slab_peek(&commit_graph_data_slab, c); | |
112 | ||
113 | if (!data) | |
114 | return GENERATION_NUMBER_INFINITY; | |
115 | else if (data->graph_pos == COMMIT_NOT_FROM_GRAPH) | |
116 | return GENERATION_NUMBER_INFINITY; | |
117 | ||
118 | return data->generation; | |
119 | } | |
120 | ||
121 | static struct commit_graph_data *commit_graph_data_at(const struct commit *c) | |
122 | { | |
123 | unsigned int i, nth_slab; | |
124 | struct commit_graph_data *data = | |
125 | commit_graph_data_slab_peek(&commit_graph_data_slab, c); | |
126 | ||
127 | if (data) | |
128 | return data; | |
129 | ||
130 | nth_slab = c->index / commit_graph_data_slab.slab_size; | |
131 | data = commit_graph_data_slab_at(&commit_graph_data_slab, c); | |
132 | ||
133 | /* | |
134 | * commit-slab initializes elements with zero, overwrite this with | |
135 | * COMMIT_NOT_FROM_GRAPH for graph_pos. | |
136 | * | |
137 | * We avoid initializing generation with checking if graph position | |
138 | * is not COMMIT_NOT_FROM_GRAPH. | |
139 | */ | |
140 | for (i = 0; i < commit_graph_data_slab.slab_size; i++) { | |
141 | commit_graph_data_slab.slab[nth_slab][i].graph_pos = | |
142 | COMMIT_NOT_FROM_GRAPH; | |
143 | } | |
144 | ||
145 | return data; | |
146 | } | |
147 | ||
e30c5ee7 AK |
148 | /* |
149 | * Should be used only while writing commit-graph as it compares | |
150 | * generation value of commits by directly accessing commit-slab. | |
151 | */ | |
3d112755 GS |
152 | static int commit_gen_cmp(const void *va, const void *vb) |
153 | { | |
154 | const struct commit *a = *(const struct commit **)va; | |
155 | const struct commit *b = *(const struct commit **)vb; | |
156 | ||
d7f92784 AK |
157 | const timestamp_t generation_a = commit_graph_data_at(a)->generation; |
158 | const timestamp_t generation_b = commit_graph_data_at(b)->generation; | |
3d112755 | 159 | /* lower generation commits first */ |
c752ad09 | 160 | if (generation_a < generation_b) |
3d112755 | 161 | return -1; |
c752ad09 | 162 | else if (generation_a > generation_b) |
3d112755 GS |
163 | return 1; |
164 | ||
165 | /* use date as a heuristic when generations are equal */ | |
166 | if (a->date < b->date) | |
167 | return -1; | |
168 | else if (a->date > b->date) | |
169 | return 1; | |
170 | return 0; | |
171 | } | |
172 | ||
d21ee7d1 | 173 | char *get_commit_graph_filename(struct object_directory *obj_dir) |
08fd81c9 | 174 | { |
d21ee7d1 | 175 | return xstrfmt("%s/info/commit-graph", obj_dir->path); |
08fd81c9 DS |
176 | } |
177 | ||
ad2dd5bb | 178 | static char *get_split_graph_filename(struct object_directory *odb, |
5c84b339 DS |
179 | const char *oid_hex) |
180 | { | |
ad2dd5bb TB |
181 | return xstrfmt("%s/info/commit-graphs/graph-%s.graph", odb->path, |
182 | oid_hex); | |
5c84b339 DS |
183 | } |
184 | ||
663b2b1b | 185 | char *get_commit_graph_chain_filename(struct object_directory *odb) |
5c84b339 | 186 | { |
ad2dd5bb | 187 | return xstrfmt("%s/info/commit-graphs/commit-graph-chain", odb->path); |
08fd81c9 DS |
188 | } |
189 | ||
c1665998 | 190 | static uint8_t oid_version(void) |
191 | { | |
665d70ad DS |
192 | switch (hash_algo_by_ptr(the_hash_algo)) { |
193 | case GIT_HASH_SHA1: | |
194 | return 1; | |
195 | case GIT_HASH_SHA256: | |
196 | return 2; | |
197 | default: | |
198 | die(_("invalid hash version")); | |
199 | } | |
c1665998 | 200 | } |
201 | ||
2a2e32bd DS |
202 | static struct commit_graph *alloc_commit_graph(void) |
203 | { | |
204 | struct commit_graph *g = xcalloc(1, sizeof(*g)); | |
2a2e32bd DS |
205 | |
206 | return g; | |
207 | } | |
208 | ||
d6538246 DS |
209 | extern int read_replace_refs; |
210 | ||
211 | static int commit_graph_compatible(struct repository *r) | |
212 | { | |
5cef295f DS |
213 | if (!r->gitdir) |
214 | return 0; | |
215 | ||
d6538246 DS |
216 | if (read_replace_refs) { |
217 | prepare_replace_object(r); | |
218 | if (hashmap_get_size(&r->objects->replace_map->map)) | |
219 | return 0; | |
220 | } | |
221 | ||
20fd6d57 | 222 | prepare_commit_graft(r); |
ce16364e TB |
223 | if (r->parsed_objects && |
224 | (r->parsed_objects->grafts_nr || r->parsed_objects->substituted_parent)) | |
20fd6d57 DS |
225 | return 0; |
226 | if (is_repository_shallow(r)) | |
227 | return 0; | |
228 | ||
d6538246 DS |
229 | return 1; |
230 | } | |
231 | ||
61df89c8 ÆAB |
232 | int open_commit_graph(const char *graph_file, int *fd, struct stat *st) |
233 | { | |
234 | *fd = git_open(graph_file); | |
235 | if (*fd < 0) | |
236 | return 0; | |
237 | if (fstat(*fd, st)) { | |
238 | close(*fd); | |
239 | return 0; | |
240 | } | |
241 | return 1; | |
242 | } | |
243 | ||
ab14d067 TB |
244 | struct commit_graph *load_commit_graph_one_fd_st(struct repository *r, |
245 | int fd, struct stat *st, | |
a7df60ca | 246 | struct object_directory *odb) |
2a2e32bd DS |
247 | { |
248 | void *graph_map; | |
2a2e32bd | 249 | size_t graph_size; |
aa658574 | 250 | struct commit_graph *ret; |
2a2e32bd | 251 | |
61df89c8 | 252 | graph_size = xsize_t(st->st_size); |
2a2e32bd DS |
253 | |
254 | if (graph_size < GRAPH_MIN_SIZE) { | |
255 | close(fd); | |
67a530fa | 256 | error(_("commit-graph file is too small")); |
61df89c8 | 257 | return NULL; |
2a2e32bd DS |
258 | } |
259 | graph_map = xmmap(NULL, graph_size, PROT_READ, MAP_PRIVATE, fd, 0); | |
c8828530 | 260 | close(fd); |
ab14d067 | 261 | ret = parse_commit_graph(r, graph_map, graph_size); |
aa658574 | 262 | |
a7df60ca TB |
263 | if (ret) |
264 | ret->odb = odb; | |
c8828530 | 265 | else |
aa658574 | 266 | munmap(graph_map, graph_size); |
aa658574 JS |
267 | |
268 | return ret; | |
269 | } | |
270 | ||
2ac138d5 ÆAB |
271 | static int verify_commit_graph_lite(struct commit_graph *g) |
272 | { | |
273 | /* | |
274 | * Basic validation shared between parse_commit_graph() | |
275 | * which'll be called every time the graph is used, and the | |
276 | * much more expensive verify_commit_graph() used by | |
277 | * "commit-graph verify". | |
278 | * | |
279 | * There should only be very basic checks here to ensure that | |
280 | * we don't e.g. segfault in fill_commit_in_graph(), but | |
281 | * because this is a very hot codepath nothing that e.g. loops | |
282 | * over g->num_commits, or runs a checksum on the commit-graph | |
283 | * itself. | |
284 | */ | |
285 | if (!g->chunk_oid_fanout) { | |
286 | error("commit-graph is missing the OID Fanout chunk"); | |
287 | return 1; | |
288 | } | |
289 | if (!g->chunk_oid_lookup) { | |
290 | error("commit-graph is missing the OID Lookup chunk"); | |
291 | return 1; | |
292 | } | |
293 | if (!g->chunk_commit_data) { | |
294 | error("commit-graph is missing the Commit Data chunk"); | |
295 | return 1; | |
296 | } | |
297 | ||
298 | return 0; | |
299 | } | |
300 | ||
ab14d067 TB |
301 | struct commit_graph *parse_commit_graph(struct repository *r, |
302 | void *graph_map, size_t graph_size) | |
aa658574 JS |
303 | { |
304 | const unsigned char *data, *chunk_lookup; | |
305 | uint32_t i; | |
306 | struct commit_graph *graph; | |
5cfa438a | 307 | uint64_t next_chunk_offset; |
aa658574 JS |
308 | uint32_t graph_signature; |
309 | unsigned char graph_version, hash_version; | |
310 | ||
311 | if (!graph_map) | |
312 | return NULL; | |
313 | ||
314 | if (graph_size < GRAPH_MIN_SIZE) | |
315 | return NULL; | |
316 | ||
2a2e32bd DS |
317 | data = (const unsigned char *)graph_map; |
318 | ||
319 | graph_signature = get_be32(data); | |
320 | if (graph_signature != GRAPH_SIGNATURE) { | |
93b4405f | 321 | error(_("commit-graph signature %X does not match signature %X"), |
2a2e32bd | 322 | graph_signature, GRAPH_SIGNATURE); |
aa658574 | 323 | return NULL; |
2a2e32bd DS |
324 | } |
325 | ||
326 | graph_version = *(unsigned char*)(data + 4); | |
327 | if (graph_version != GRAPH_VERSION) { | |
93b4405f | 328 | error(_("commit-graph version %X does not match version %X"), |
2a2e32bd | 329 | graph_version, GRAPH_VERSION); |
aa658574 | 330 | return NULL; |
2a2e32bd DS |
331 | } |
332 | ||
333 | hash_version = *(unsigned char*)(data + 5); | |
c1665998 | 334 | if (hash_version != oid_version()) { |
93b4405f | 335 | error(_("commit-graph hash version %X does not match version %X"), |
c1665998 | 336 | hash_version, oid_version()); |
aa658574 | 337 | return NULL; |
2a2e32bd DS |
338 | } |
339 | ||
b66d8475 TB |
340 | prepare_repo_settings(r); |
341 | ||
2a2e32bd DS |
342 | graph = alloc_commit_graph(); |
343 | ||
c1665998 | 344 | graph->hash_len = the_hash_algo->rawsz; |
2a2e32bd | 345 | graph->num_chunks = *(unsigned char*)(data + 6); |
2a2e32bd DS |
346 | graph->data = graph_map; |
347 | graph->data_len = graph_size; | |
348 | ||
2ad4f1a7 SG |
349 | if (graph_size < GRAPH_HEADER_SIZE + |
350 | (graph->num_chunks + 1) * GRAPH_CHUNKLOOKUP_WIDTH + | |
351 | GRAPH_FANOUT_SIZE + the_hash_algo->rawsz) { | |
352 | error(_("commit-graph file is too small to hold %u chunks"), | |
353 | graph->num_chunks); | |
354 | free(graph); | |
355 | return NULL; | |
356 | } | |
357 | ||
2a2e32bd | 358 | chunk_lookup = data + 8; |
5cfa438a | 359 | next_chunk_offset = get_be64(chunk_lookup + 4); |
2a2e32bd | 360 | for (i = 0; i < graph->num_chunks; i++) { |
d2b86fba | 361 | uint32_t chunk_id; |
5cfa438a | 362 | uint64_t chunk_offset = next_chunk_offset; |
2a2e32bd DS |
363 | int chunk_repeated = 0; |
364 | ||
d2b86fba | 365 | chunk_id = get_be32(chunk_lookup + 0); |
d2b86fba | 366 | |
2a2e32bd | 367 | chunk_lookup += GRAPH_CHUNKLOOKUP_WIDTH; |
5cfa438a | 368 | next_chunk_offset = get_be64(chunk_lookup + 4); |
2a2e32bd | 369 | |
c1665998 | 370 | if (chunk_offset > graph_size - the_hash_algo->rawsz) { |
93b4405f | 371 | error(_("commit-graph improper chunk offset %08x%08x"), (uint32_t)(chunk_offset >> 32), |
2a2e32bd | 372 | (uint32_t)chunk_offset); |
fbda77c6 | 373 | goto free_and_return; |
2a2e32bd DS |
374 | } |
375 | ||
376 | switch (chunk_id) { | |
377 | case GRAPH_CHUNKID_OIDFANOUT: | |
378 | if (graph->chunk_oid_fanout) | |
379 | chunk_repeated = 1; | |
380 | else | |
381 | graph->chunk_oid_fanout = (uint32_t*)(data + chunk_offset); | |
382 | break; | |
383 | ||
384 | case GRAPH_CHUNKID_OIDLOOKUP: | |
385 | if (graph->chunk_oid_lookup) | |
386 | chunk_repeated = 1; | |
5cfa438a | 387 | else { |
2a2e32bd | 388 | graph->chunk_oid_lookup = data + chunk_offset; |
5cfa438a SG |
389 | graph->num_commits = (next_chunk_offset - chunk_offset) |
390 | / graph->hash_len; | |
391 | } | |
2a2e32bd DS |
392 | break; |
393 | ||
394 | case GRAPH_CHUNKID_DATA: | |
395 | if (graph->chunk_commit_data) | |
396 | chunk_repeated = 1; | |
397 | else | |
398 | graph->chunk_commit_data = data + chunk_offset; | |
399 | break; | |
400 | ||
e8b63005 AK |
401 | case GRAPH_CHUNKID_GENERATION_DATA: |
402 | if (graph->chunk_generation_data) | |
403 | chunk_repeated = 1; | |
404 | else | |
405 | graph->chunk_generation_data = data + chunk_offset; | |
406 | break; | |
407 | ||
408 | case GRAPH_CHUNKID_GENERATION_DATA_OVERFLOW: | |
409 | if (graph->chunk_generation_data_overflow) | |
410 | chunk_repeated = 1; | |
411 | else | |
412 | graph->chunk_generation_data_overflow = data + chunk_offset; | |
413 | break; | |
414 | ||
5af7417b SG |
415 | case GRAPH_CHUNKID_EXTRAEDGES: |
416 | if (graph->chunk_extra_edges) | |
2a2e32bd DS |
417 | chunk_repeated = 1; |
418 | else | |
5af7417b | 419 | graph->chunk_extra_edges = data + chunk_offset; |
2a2e32bd | 420 | break; |
118bd570 DS |
421 | |
422 | case GRAPH_CHUNKID_BASE: | |
423 | if (graph->chunk_base_graphs) | |
424 | chunk_repeated = 1; | |
425 | else | |
426 | graph->chunk_base_graphs = data + chunk_offset; | |
76ffbca7 GS |
427 | break; |
428 | ||
429 | case GRAPH_CHUNKID_BLOOMINDEXES: | |
430 | if (graph->chunk_bloom_indexes) | |
431 | chunk_repeated = 1; | |
b66d8475 | 432 | else if (r->settings.commit_graph_read_changed_paths) |
76ffbca7 GS |
433 | graph->chunk_bloom_indexes = data + chunk_offset; |
434 | break; | |
435 | ||
436 | case GRAPH_CHUNKID_BLOOMDATA: | |
437 | if (graph->chunk_bloom_data) | |
438 | chunk_repeated = 1; | |
b66d8475 | 439 | else if (r->settings.commit_graph_read_changed_paths) { |
76ffbca7 GS |
440 | uint32_t hash_version; |
441 | graph->chunk_bloom_data = data + chunk_offset; | |
442 | hash_version = get_be32(data + chunk_offset); | |
443 | ||
444 | if (hash_version != 1) | |
445 | break; | |
446 | ||
447 | graph->bloom_filter_settings = xmalloc(sizeof(struct bloom_filter_settings)); | |
448 | graph->bloom_filter_settings->hash_version = hash_version; | |
449 | graph->bloom_filter_settings->num_hashes = get_be32(data + chunk_offset + 4); | |
450 | graph->bloom_filter_settings->bits_per_entry = get_be32(data + chunk_offset + 8); | |
97ffa4fa | 451 | graph->bloom_filter_settings->max_changed_paths = DEFAULT_BLOOM_MAX_CHANGES; |
76ffbca7 GS |
452 | } |
453 | break; | |
2a2e32bd DS |
454 | } |
455 | ||
456 | if (chunk_repeated) { | |
93b4405f | 457 | error(_("commit-graph chunk id %08x appears multiple times"), chunk_id); |
fbda77c6 | 458 | goto free_and_return; |
2a2e32bd | 459 | } |
2a2e32bd DS |
460 | } |
461 | ||
76ffbca7 GS |
462 | if (graph->chunk_bloom_indexes && graph->chunk_bloom_data) { |
463 | init_bloom_filters(); | |
464 | } else { | |
465 | /* We need both the bloom chunks to exist together. Else ignore the data */ | |
466 | graph->chunk_bloom_indexes = NULL; | |
467 | graph->chunk_bloom_data = NULL; | |
fbda77c6 | 468 | FREE_AND_NULL(graph->bloom_filter_settings); |
76ffbca7 GS |
469 | } |
470 | ||
118bd570 DS |
471 | hashcpy(graph->oid.hash, graph->data + graph->data_len - graph->hash_len); |
472 | ||
fbda77c6 JT |
473 | if (verify_commit_graph_lite(graph)) |
474 | goto free_and_return; | |
2ac138d5 | 475 | |
2a2e32bd | 476 | return graph; |
fbda77c6 JT |
477 | |
478 | free_and_return: | |
479 | free(graph->bloom_filter_settings); | |
480 | free(graph); | |
481 | return NULL; | |
2a2e32bd DS |
482 | } |
483 | ||
ab14d067 TB |
484 | static struct commit_graph *load_commit_graph_one(struct repository *r, |
485 | const char *graph_file, | |
a7df60ca | 486 | struct object_directory *odb) |
61df89c8 ÆAB |
487 | { |
488 | ||
489 | struct stat st; | |
490 | int fd; | |
6c622f9f | 491 | struct commit_graph *g; |
61df89c8 ÆAB |
492 | int open_ok = open_commit_graph(graph_file, &fd, &st); |
493 | ||
494 | if (!open_ok) | |
495 | return NULL; | |
496 | ||
ab14d067 | 497 | g = load_commit_graph_one_fd_st(r, fd, &st, odb); |
6c622f9f DS |
498 | |
499 | if (g) | |
500 | g->filename = xstrdup(graph_file); | |
501 | ||
502 | return g; | |
61df89c8 ÆAB |
503 | } |
504 | ||
13c24992 TB |
505 | static struct commit_graph *load_commit_graph_v1(struct repository *r, |
506 | struct object_directory *odb) | |
5c84b339 | 507 | { |
ad2dd5bb | 508 | char *graph_name = get_commit_graph_filename(odb); |
ab14d067 | 509 | struct commit_graph *g = load_commit_graph_one(r, graph_name, odb); |
5c84b339 DS |
510 | free(graph_name); |
511 | ||
512 | return g; | |
513 | } | |
514 | ||
515 | static int add_graph_to_chain(struct commit_graph *g, | |
516 | struct commit_graph *chain, | |
517 | struct object_id *oids, | |
518 | int n) | |
519 | { | |
520 | struct commit_graph *cur_g = chain; | |
521 | ||
118bd570 DS |
522 | if (n && !g->chunk_base_graphs) { |
523 | warning(_("commit-graph has no base graphs chunk")); | |
524 | return 0; | |
525 | } | |
526 | ||
5c84b339 DS |
527 | while (n) { |
528 | n--; | |
118bd570 DS |
529 | |
530 | if (!cur_g || | |
531 | !oideq(&oids[n], &cur_g->oid) || | |
532 | !hasheq(oids[n].hash, g->chunk_base_graphs + g->hash_len * n)) { | |
533 | warning(_("commit-graph chain does not match")); | |
534 | return 0; | |
535 | } | |
536 | ||
5c84b339 DS |
537 | cur_g = cur_g->base_graph; |
538 | } | |
539 | ||
540 | g->base_graph = chain; | |
541 | ||
542 | if (chain) | |
543 | g->num_commits_in_base = chain->num_commits + chain->num_commits_in_base; | |
544 | ||
545 | return 1; | |
546 | } | |
547 | ||
13c24992 TB |
548 | static struct commit_graph *load_commit_graph_chain(struct repository *r, |
549 | struct object_directory *odb) | |
5c84b339 DS |
550 | { |
551 | struct commit_graph *graph_chain = NULL; | |
552 | struct strbuf line = STRBUF_INIT; | |
553 | struct stat st; | |
554 | struct object_id *oids; | |
555 | int i = 0, valid = 1, count; | |
663b2b1b | 556 | char *chain_name = get_commit_graph_chain_filename(odb); |
5c84b339 DS |
557 | FILE *fp; |
558 | int stat_res; | |
559 | ||
560 | fp = fopen(chain_name, "r"); | |
561 | stat_res = stat(chain_name, &st); | |
562 | free(chain_name); | |
563 | ||
564 | if (!fp || | |
565 | stat_res || | |
566 | st.st_size <= the_hash_algo->hexsz) | |
567 | return NULL; | |
568 | ||
569 | count = st.st_size / (the_hash_algo->hexsz + 1); | |
570 | oids = xcalloc(count, sizeof(struct object_id)); | |
571 | ||
c523035c DS |
572 | prepare_alt_odb(r); |
573 | ||
574 | for (i = 0; i < count; i++) { | |
575 | struct object_directory *odb; | |
5c84b339 DS |
576 | |
577 | if (strbuf_getline_lf(&line, fp) == EOF) | |
578 | break; | |
579 | ||
580 | if (get_oid_hex(line.buf, &oids[i])) { | |
581 | warning(_("invalid commit-graph chain: line '%s' not a hash"), | |
582 | line.buf); | |
583 | valid = 0; | |
584 | break; | |
585 | } | |
586 | ||
c523035c DS |
587 | valid = 0; |
588 | for (odb = r->objects->odb; odb; odb = odb->next) { | |
ad2dd5bb | 589 | char *graph_name = get_split_graph_filename(odb, line.buf); |
ab14d067 | 590 | struct commit_graph *g = load_commit_graph_one(r, graph_name, odb); |
5c84b339 | 591 | |
c523035c DS |
592 | free(graph_name); |
593 | ||
594 | if (g) { | |
c523035c DS |
595 | if (add_graph_to_chain(g, graph_chain, oids, i)) { |
596 | graph_chain = g; | |
597 | valid = 1; | |
598 | } | |
599 | ||
600 | break; | |
601 | } | |
602 | } | |
603 | ||
604 | if (!valid) { | |
605 | warning(_("unable to find all commit-graph files")); | |
606 | break; | |
607 | } | |
5c84b339 DS |
608 | } |
609 | ||
610 | free(oids); | |
611 | fclose(fp); | |
0aa6bce7 | 612 | strbuf_release(&line); |
5c84b339 DS |
613 | |
614 | return graph_chain; | |
615 | } | |
616 | ||
1fdc383c AK |
617 | static void validate_mixed_generation_chain(struct commit_graph *g) |
618 | { | |
619 | int read_generation_data; | |
620 | ||
621 | if (!g) | |
622 | return; | |
623 | ||
624 | read_generation_data = !!g->chunk_generation_data; | |
625 | ||
626 | while (g) { | |
627 | g->read_generation_data = read_generation_data; | |
628 | g = g->base_graph; | |
629 | } | |
630 | } | |
631 | ||
13c24992 TB |
632 | struct commit_graph *read_commit_graph_one(struct repository *r, |
633 | struct object_directory *odb) | |
5c84b339 | 634 | { |
13c24992 | 635 | struct commit_graph *g = load_commit_graph_v1(r, odb); |
5c84b339 DS |
636 | |
637 | if (!g) | |
13c24992 | 638 | g = load_commit_graph_chain(r, odb); |
5c84b339 | 639 | |
1fdc383c AK |
640 | validate_mixed_generation_chain(g); |
641 | ||
5c84b339 | 642 | return g; |
61df89c8 ÆAB |
643 | } |
644 | ||
13c24992 TB |
645 | static void prepare_commit_graph_one(struct repository *r, |
646 | struct object_directory *odb) | |
177722b3 | 647 | { |
177722b3 | 648 | |
dade47c0 | 649 | if (r->objects->commit_graph) |
177722b3 DS |
650 | return; |
651 | ||
13c24992 | 652 | r->objects->commit_graph = read_commit_graph_one(r, odb); |
177722b3 DS |
653 | } |
654 | ||
5faf357b JT |
655 | /* |
656 | * Return 1 if commit_graph is non-NULL, and 0 otherwise. | |
657 | * | |
15beaaa3 | 658 | * On the first invocation, this function attempts to load the commit |
5faf357b JT |
659 | * graph if the_repository is configured to have one. |
660 | */ | |
dade47c0 | 661 | static int prepare_commit_graph(struct repository *r) |
177722b3 | 662 | { |
263db403 | 663 | struct object_directory *odb; |
dade47c0 | 664 | |
6abada18 JK |
665 | /* |
666 | * This must come before the "already attempted?" check below, because | |
667 | * we want to disable even an already-loaded graph file. | |
668 | */ | |
669 | if (r->commit_graph_disabled) | |
670 | return 0; | |
43d35618 | 671 | |
dade47c0 JT |
672 | if (r->objects->commit_graph_attempted) |
673 | return !!r->objects->commit_graph; | |
674 | r->objects->commit_graph_attempted = 1; | |
675 | ||
7211b9e7 DS |
676 | prepare_repo_settings(r); |
677 | ||
859fdc0c | 678 | if (!git_env_bool(GIT_TEST_COMMIT_GRAPH, 0) && |
7211b9e7 | 679 | r->settings.core_commit_graph != 1) |
dade47c0 JT |
680 | /* |
681 | * This repository is not configured to use commit graphs, so | |
682 | * do not load one. (But report commit_graph_attempted anyway | |
683 | * so that commit graph loading is not attempted again for this | |
684 | * repository.) | |
685 | */ | |
5faf357b JT |
686 | return 0; |
687 | ||
d6538246 DS |
688 | if (!commit_graph_compatible(r)) |
689 | return 0; | |
690 | ||
dade47c0 | 691 | prepare_alt_odb(r); |
f0eaf638 | 692 | for (odb = r->objects->odb; |
263db403 JK |
693 | !r->objects->commit_graph && odb; |
694 | odb = odb->next) | |
13c24992 | 695 | prepare_commit_graph_one(r, odb); |
dade47c0 | 696 | return !!r->objects->commit_graph; |
177722b3 DS |
697 | } |
698 | ||
6cc01743 DS |
699 | int generation_numbers_enabled(struct repository *r) |
700 | { | |
701 | uint32_t first_generation; | |
702 | struct commit_graph *g; | |
703 | if (!prepare_commit_graph(r)) | |
704 | return 0; | |
705 | ||
706 | g = r->objects->commit_graph; | |
707 | ||
708 | if (!g->num_commits) | |
709 | return 0; | |
710 | ||
711 | first_generation = get_be32(g->chunk_commit_data + | |
712 | g->hash_len + 8) >> 2; | |
713 | ||
714 | return !!first_generation; | |
715 | } | |
716 | ||
4f364405 TB |
717 | struct bloom_filter_settings *get_bloom_filter_settings(struct repository *r) |
718 | { | |
719 | struct commit_graph *g = r->objects->commit_graph; | |
720 | while (g) { | |
721 | if (g->bloom_filter_settings) | |
722 | return g->bloom_filter_settings; | |
723 | g = g->base_graph; | |
724 | } | |
725 | return NULL; | |
726 | } | |
727 | ||
d4f4d60f DS |
728 | static void close_commit_graph_one(struct commit_graph *g) |
729 | { | |
730 | if (!g) | |
731 | return; | |
732 | ||
733 | close_commit_graph_one(g->base_graph); | |
734 | free_commit_graph(g); | |
735 | } | |
736 | ||
c3a3a964 | 737 | void close_commit_graph(struct raw_object_store *o) |
177722b3 | 738 | { |
d4f4d60f | 739 | close_commit_graph_one(o->commit_graph); |
c3a3a964 | 740 | o->commit_graph = NULL; |
177722b3 DS |
741 | } |
742 | ||
743 | static int bsearch_graph(struct commit_graph *g, struct object_id *oid, uint32_t *pos) | |
744 | { | |
745 | return bsearch_hash(oid->hash, g->chunk_oid_fanout, | |
746 | g->chunk_oid_lookup, g->hash_len, pos); | |
747 | } | |
748 | ||
d4f4d60f DS |
749 | static void load_oid_from_graph(struct commit_graph *g, |
750 | uint32_t pos, | |
751 | struct object_id *oid) | |
752 | { | |
753 | uint32_t lex_index; | |
754 | ||
755 | while (g && pos < g->num_commits_in_base) | |
756 | g = g->base_graph; | |
757 | ||
758 | if (!g) | |
759 | BUG("NULL commit-graph"); | |
760 | ||
761 | if (pos >= g->num_commits + g->num_commits_in_base) | |
762 | die(_("invalid commit position. commit-graph is likely corrupt")); | |
763 | ||
764 | lex_index = pos - g->num_commits_in_base; | |
765 | ||
766 | hashcpy(oid->hash, g->chunk_oid_lookup + g->hash_len * lex_index); | |
767 | } | |
768 | ||
4f542b7a SB |
769 | static struct commit_list **insert_parent_or_die(struct repository *r, |
770 | struct commit_graph *g, | |
d4f4d60f | 771 | uint32_t pos, |
177722b3 DS |
772 | struct commit_list **pptr) |
773 | { | |
774 | struct commit *c; | |
775 | struct object_id oid; | |
96af91d4 | 776 | |
d4f4d60f DS |
777 | if (pos >= g->num_commits + g->num_commits_in_base) |
778 | die("invalid parent position %"PRIu32, pos); | |
53614b13 | 779 | |
d4f4d60f | 780 | load_oid_from_graph(g, pos, &oid); |
4f542b7a | 781 | c = lookup_commit(r, &oid); |
177722b3 | 782 | if (!c) |
4f5b532d | 783 | die(_("could not find commit %s"), oid_to_hex(&oid)); |
c49c82aa | 784 | commit_graph_data_at(c)->graph_pos = pos; |
177722b3 DS |
785 | return &commit_list_insert(c, pptr)->next; |
786 | } | |
787 | ||
e2838d85 DS |
788 | static void fill_commit_graph_info(struct commit *item, struct commit_graph *g, uint32_t pos) |
789 | { | |
d4f4d60f | 790 | const unsigned char *commit_data; |
c752ad09 | 791 | struct commit_graph_data *graph_data; |
e8b63005 AK |
792 | uint32_t lex_index, offset_pos; |
793 | uint64_t date_high, date_low, offset; | |
d4f4d60f DS |
794 | |
795 | while (pos < g->num_commits_in_base) | |
796 | g = g->base_graph; | |
797 | ||
f90fca63 AK |
798 | if (pos >= g->num_commits + g->num_commits_in_base) |
799 | die(_("invalid commit position. commit-graph is likely corrupt")); | |
800 | ||
d4f4d60f DS |
801 | lex_index = pos - g->num_commits_in_base; |
802 | commit_data = g->chunk_commit_data + GRAPH_DATA_WIDTH * lex_index; | |
c752ad09 AK |
803 | |
804 | graph_data = commit_graph_data_at(item); | |
805 | graph_data->graph_pos = pos; | |
f90fca63 AK |
806 | |
807 | date_high = get_be32(commit_data + g->hash_len + 8) & 0x3; | |
808 | date_low = get_be32(commit_data + g->hash_len + 12); | |
809 | item->date = (timestamp_t)((date_high << 32) | date_low); | |
810 | ||
1fdc383c | 811 | if (g->read_generation_data) { |
e8b63005 AK |
812 | offset = (timestamp_t)get_be32(g->chunk_generation_data + sizeof(uint32_t) * lex_index); |
813 | ||
814 | if (offset & CORRECTED_COMMIT_DATE_OFFSET_OVERFLOW) { | |
815 | if (!g->chunk_generation_data_overflow) | |
816 | die(_("commit-graph requires overflow generation data but has none")); | |
817 | ||
818 | offset_pos = offset ^ CORRECTED_COMMIT_DATE_OFFSET_OVERFLOW; | |
819 | graph_data->generation = get_be64(g->chunk_generation_data_overflow + 8 * offset_pos); | |
820 | } else | |
821 | graph_data->generation = item->date + offset; | |
822 | } else | |
823 | graph_data->generation = get_be32(commit_data + g->hash_len + 8) >> 2; | |
72a2bfca AK |
824 | |
825 | if (g->topo_levels) | |
826 | *topo_level_slab_at(g->topo_levels, item) = get_be32(commit_data + g->hash_len + 8) >> 2; | |
e2838d85 DS |
827 | } |
828 | ||
a133c40b NTND |
829 | static inline void set_commit_tree(struct commit *c, struct tree *t) |
830 | { | |
831 | c->maybe_tree = t; | |
832 | } | |
833 | ||
4f542b7a SB |
834 | static int fill_commit_in_graph(struct repository *r, |
835 | struct commit *item, | |
836 | struct commit_graph *g, uint32_t pos) | |
177722b3 | 837 | { |
177722b3 DS |
838 | uint32_t edge_value; |
839 | uint32_t *parent_data_ptr; | |
177722b3 | 840 | struct commit_list **pptr; |
d4f4d60f DS |
841 | const unsigned char *commit_data; |
842 | uint32_t lex_index; | |
177722b3 | 843 | |
d4f4d60f DS |
844 | while (pos < g->num_commits_in_base) |
845 | g = g->base_graph; | |
846 | ||
f90fca63 | 847 | fill_commit_graph_info(item, g, pos); |
d4f4d60f | 848 | |
d4f4d60f | 849 | lex_index = pos - g->num_commits_in_base; |
d4f4d60f DS |
850 | commit_data = g->chunk_commit_data + (g->hash_len + 16) * lex_index; |
851 | ||
852 | item->object.parsed = 1; | |
177722b3 | 853 | |
a133c40b | 854 | set_commit_tree(item, NULL); |
177722b3 | 855 | |
177722b3 DS |
856 | pptr = &item->parents; |
857 | ||
858 | edge_value = get_be32(commit_data + g->hash_len); | |
859 | if (edge_value == GRAPH_PARENT_NONE) | |
860 | return 1; | |
4f542b7a | 861 | pptr = insert_parent_or_die(r, g, edge_value, pptr); |
177722b3 DS |
862 | |
863 | edge_value = get_be32(commit_data + g->hash_len + 4); | |
864 | if (edge_value == GRAPH_PARENT_NONE) | |
865 | return 1; | |
5af7417b | 866 | if (!(edge_value & GRAPH_EXTRA_EDGES_NEEDED)) { |
4f542b7a | 867 | pptr = insert_parent_or_die(r, g, edge_value, pptr); |
177722b3 DS |
868 | return 1; |
869 | } | |
870 | ||
5af7417b | 871 | parent_data_ptr = (uint32_t*)(g->chunk_extra_edges + |
177722b3 DS |
872 | 4 * (uint64_t)(edge_value & GRAPH_EDGE_LAST_MASK)); |
873 | do { | |
874 | edge_value = get_be32(parent_data_ptr); | |
4f542b7a | 875 | pptr = insert_parent_or_die(r, g, |
177722b3 DS |
876 | edge_value & GRAPH_EDGE_LAST_MASK, |
877 | pptr); | |
878 | parent_data_ptr++; | |
879 | } while (!(edge_value & GRAPH_LAST_EDGE)); | |
880 | ||
881 | return 1; | |
882 | } | |
883 | ||
e2838d85 DS |
884 | static int find_commit_in_graph(struct commit *item, struct commit_graph *g, uint32_t *pos) |
885 | { | |
c752ad09 AK |
886 | uint32_t graph_pos = commit_graph_position(item); |
887 | if (graph_pos != COMMIT_NOT_FROM_GRAPH) { | |
888 | *pos = graph_pos; | |
e2838d85 DS |
889 | return 1; |
890 | } else { | |
d4f4d60f DS |
891 | struct commit_graph *cur_g = g; |
892 | uint32_t lex_index; | |
893 | ||
894 | while (cur_g && !bsearch_graph(cur_g, &(item->object.oid), &lex_index)) | |
895 | cur_g = cur_g->base_graph; | |
896 | ||
897 | if (cur_g) { | |
898 | *pos = lex_index + cur_g->num_commits_in_base; | |
899 | return 1; | |
900 | } | |
901 | ||
902 | return 0; | |
e2838d85 DS |
903 | } |
904 | } | |
905 | ||
4f542b7a SB |
906 | static int parse_commit_in_graph_one(struct repository *r, |
907 | struct commit_graph *g, | |
908 | struct commit *item) | |
177722b3 | 909 | { |
e2838d85 DS |
910 | uint32_t pos; |
911 | ||
177722b3 DS |
912 | if (item->object.parsed) |
913 | return 1; | |
ee797053 DS |
914 | |
915 | if (find_commit_in_graph(item, g, &pos)) | |
4f542b7a | 916 | return fill_commit_in_graph(r, item, g, pos); |
ee797053 DS |
917 | |
918 | return 0; | |
919 | } | |
920 | ||
dade47c0 | 921 | int parse_commit_in_graph(struct repository *r, struct commit *item) |
ee797053 | 922 | { |
7b671f8c DS |
923 | static int checked_env = 0; |
924 | ||
925 | if (!checked_env && | |
926 | git_env_bool(GIT_TEST_COMMIT_GRAPH_DIE_ON_PARSE, 0)) | |
927 | die("dying as requested by the '%s' variable on commit-graph parse!", | |
928 | GIT_TEST_COMMIT_GRAPH_DIE_ON_PARSE); | |
929 | checked_env = 1; | |
930 | ||
dade47c0 | 931 | if (!prepare_commit_graph(r)) |
ee797053 | 932 | return 0; |
4f542b7a | 933 | return parse_commit_in_graph_one(r, r->objects->commit_graph, item); |
177722b3 DS |
934 | } |
935 | ||
dade47c0 | 936 | void load_commit_graph_info(struct repository *r, struct commit *item) |
e2838d85 DS |
937 | { |
938 | uint32_t pos; | |
dade47c0 | 939 | if (!prepare_commit_graph(r)) |
e2838d85 | 940 | return; |
dade47c0 JT |
941 | if (find_commit_in_graph(item, r->objects->commit_graph, &pos)) |
942 | fill_commit_graph_info(item, r->objects->commit_graph, pos); | |
e2838d85 DS |
943 | } |
944 | ||
4f542b7a SB |
945 | static struct tree *load_tree_for_commit(struct repository *r, |
946 | struct commit_graph *g, | |
947 | struct commit *c) | |
7b8a21db DS |
948 | { |
949 | struct object_id oid; | |
d4f4d60f | 950 | const unsigned char *commit_data; |
c752ad09 | 951 | uint32_t graph_pos = commit_graph_position(c); |
d4f4d60f | 952 | |
c752ad09 | 953 | while (graph_pos < g->num_commits_in_base) |
d4f4d60f DS |
954 | g = g->base_graph; |
955 | ||
956 | commit_data = g->chunk_commit_data + | |
c752ad09 | 957 | GRAPH_DATA_WIDTH * (graph_pos - g->num_commits_in_base); |
7b8a21db DS |
958 | |
959 | hashcpy(oid.hash, commit_data); | |
a133c40b | 960 | set_commit_tree(c, lookup_tree(r, &oid)); |
7b8a21db DS |
961 | |
962 | return c->maybe_tree; | |
963 | } | |
964 | ||
4f542b7a SB |
965 | static struct tree *get_commit_tree_in_graph_one(struct repository *r, |
966 | struct commit_graph *g, | |
0cbef8f8 | 967 | const struct commit *c) |
7b8a21db DS |
968 | { |
969 | if (c->maybe_tree) | |
970 | return c->maybe_tree; | |
c49c82aa | 971 | if (commit_graph_position(c) == COMMIT_NOT_FROM_GRAPH) |
0cbef8f8 DS |
972 | BUG("get_commit_tree_in_graph_one called from non-commit-graph commit"); |
973 | ||
4f542b7a | 974 | return load_tree_for_commit(r, g, (struct commit *)c); |
0cbef8f8 | 975 | } |
7b8a21db | 976 | |
dade47c0 | 977 | struct tree *get_commit_tree_in_graph(struct repository *r, const struct commit *c) |
0cbef8f8 | 978 | { |
4f542b7a | 979 | return get_commit_tree_in_graph_one(r, r->objects->commit_graph, c); |
7b8a21db DS |
980 | } |
981 | ||
c9905bea DS |
982 | struct packed_commit_list { |
983 | struct commit **list; | |
3361390c JK |
984 | size_t nr; |
985 | size_t alloc; | |
c9905bea DS |
986 | }; |
987 | ||
c9905bea DS |
988 | struct write_commit_graph_context { |
989 | struct repository *r; | |
0bd52e27 | 990 | struct object_directory *odb; |
c9905bea | 991 | char *graph_name; |
a5f1c448 | 992 | struct oid_array oids; |
c9905bea DS |
993 | struct packed_commit_list commits; |
994 | int num_extra_edges; | |
e8b63005 | 995 | int num_generation_data_overflows; |
c9905bea DS |
996 | unsigned long approx_nr_objects; |
997 | struct progress *progress; | |
998 | int progress_done; | |
999 | uint64_t progress_cnt; | |
6c622f9f DS |
1000 | |
1001 | char *base_graph_name; | |
1002 | int num_commit_graphs_before; | |
1003 | int num_commit_graphs_after; | |
1004 | char **commit_graph_filenames_before; | |
1005 | char **commit_graph_filenames_after; | |
1006 | char **commit_graph_hash_after; | |
1007 | uint32_t new_num_commits_in_base; | |
1008 | struct commit_graph *new_base_graph; | |
1009 | ||
c9905bea | 1010 | unsigned append:1, |
6c622f9f | 1011 | report_progress:1, |
7c5c9b9c | 1012 | split:1, |
3d112755 | 1013 | changed_paths:1, |
e8b63005 AK |
1014 | order_by_pack:1, |
1015 | write_generation_data:1; | |
c2bc6e6a | 1016 | |
72a2bfca | 1017 | struct topo_level_slab *topo_levels; |
98bb7961 | 1018 | const struct commit_graph_opts *opts; |
f97b9325 | 1019 | size_t total_bloom_filter_data_size; |
98037f2b | 1020 | const struct bloom_filter_settings *bloom_settings; |
312cff52 TB |
1021 | |
1022 | int count_bloom_filter_computed; | |
1023 | int count_bloom_filter_not_computed; | |
59f0d507 | 1024 | int count_bloom_filter_trunc_empty; |
312cff52 | 1025 | int count_bloom_filter_trunc_large; |
c9905bea DS |
1026 | }; |
1027 | ||
9bab081d SG |
1028 | static int write_graph_chunk_fanout(struct hashfile *f, |
1029 | struct write_commit_graph_context *ctx) | |
08fd81c9 DS |
1030 | { |
1031 | int i, count = 0; | |
c9905bea | 1032 | struct commit **list = ctx->commits.list; |
08fd81c9 DS |
1033 | |
1034 | /* | |
1035 | * Write the first-level table (the list is sorted, | |
1036 | * but we use a 256-entry lookup to be able to avoid | |
1037 | * having to do eight extra binary search iterations). | |
1038 | */ | |
1039 | for (i = 0; i < 256; i++) { | |
c9905bea | 1040 | while (count < ctx->commits.nr) { |
08fd81c9 DS |
1041 | if ((*list)->object.oid.hash[0] != i) |
1042 | break; | |
c9905bea | 1043 | display_progress(ctx->progress, ++ctx->progress_cnt); |
08fd81c9 DS |
1044 | count++; |
1045 | list++; | |
1046 | } | |
1047 | ||
1048 | hashwrite_be32(f, count); | |
1049 | } | |
9bab081d SG |
1050 | |
1051 | return 0; | |
08fd81c9 DS |
1052 | } |
1053 | ||
9bab081d SG |
1054 | static int write_graph_chunk_oids(struct hashfile *f, |
1055 | struct write_commit_graph_context *ctx) | |
08fd81c9 | 1056 | { |
c9905bea | 1057 | struct commit **list = ctx->commits.list; |
08fd81c9 | 1058 | int count; |
c9905bea DS |
1059 | for (count = 0; count < ctx->commits.nr; count++, list++) { |
1060 | display_progress(ctx->progress, ++ctx->progress_cnt); | |
9bab081d | 1061 | hashwrite(f, (*list)->object.oid.hash, the_hash_algo->rawsz); |
53035c4f | 1062 | } |
9bab081d SG |
1063 | |
1064 | return 0; | |
08fd81c9 DS |
1065 | } |
1066 | ||
1067 | static const unsigned char *commit_to_sha1(size_t index, void *table) | |
1068 | { | |
1069 | struct commit **commits = table; | |
1070 | return commits[index]->object.oid.hash; | |
1071 | } | |
1072 | ||
9bab081d SG |
1073 | static int write_graph_chunk_data(struct hashfile *f, |
1074 | struct write_commit_graph_context *ctx) | |
08fd81c9 | 1075 | { |
c9905bea DS |
1076 | struct commit **list = ctx->commits.list; |
1077 | struct commit **last = ctx->commits.list + ctx->commits.nr; | |
08fd81c9 DS |
1078 | uint32_t num_extra_edges = 0; |
1079 | ||
1080 | while (list < last) { | |
1081 | struct commit_list *parent; | |
806278de | 1082 | struct object_id *tree; |
08fd81c9 DS |
1083 | int edge_value; |
1084 | uint32_t packedDate[2]; | |
c9905bea | 1085 | display_progress(ctx->progress, ++ctx->progress_cnt); |
08fd81c9 | 1086 | |
16749b8d TB |
1087 | if (parse_commit_no_graph(*list)) |
1088 | die(_("unable to parse commit %s"), | |
1089 | oid_to_hex(&(*list)->object.oid)); | |
806278de | 1090 | tree = get_commit_tree_oid(*list); |
9bab081d | 1091 | hashwrite(f, tree->hash, the_hash_algo->rawsz); |
08fd81c9 DS |
1092 | |
1093 | parent = (*list)->parents; | |
1094 | ||
1095 | if (!parent) | |
1096 | edge_value = GRAPH_PARENT_NONE; | |
1097 | else { | |
1098 | edge_value = sha1_pos(parent->item->object.oid.hash, | |
c9905bea DS |
1099 | ctx->commits.list, |
1100 | ctx->commits.nr, | |
08fd81c9 DS |
1101 | commit_to_sha1); |
1102 | ||
6c622f9f DS |
1103 | if (edge_value >= 0) |
1104 | edge_value += ctx->new_num_commits_in_base; | |
8a6ac287 | 1105 | else if (ctx->new_base_graph) { |
6c622f9f DS |
1106 | uint32_t pos; |
1107 | if (find_commit_in_graph(parent->item, | |
1108 | ctx->new_base_graph, | |
1109 | &pos)) | |
1110 | edge_value = pos; | |
1111 | } | |
1112 | ||
08fd81c9 | 1113 | if (edge_value < 0) |
cce99cd8 DS |
1114 | BUG("missing parent %s for commit %s", |
1115 | oid_to_hex(&parent->item->object.oid), | |
1116 | oid_to_hex(&(*list)->object.oid)); | |
08fd81c9 DS |
1117 | } |
1118 | ||
1119 | hashwrite_be32(f, edge_value); | |
1120 | ||
1121 | if (parent) | |
1122 | parent = parent->next; | |
1123 | ||
1124 | if (!parent) | |
1125 | edge_value = GRAPH_PARENT_NONE; | |
1126 | else if (parent->next) | |
5af7417b | 1127 | edge_value = GRAPH_EXTRA_EDGES_NEEDED | num_extra_edges; |
08fd81c9 DS |
1128 | else { |
1129 | edge_value = sha1_pos(parent->item->object.oid.hash, | |
c9905bea DS |
1130 | ctx->commits.list, |
1131 | ctx->commits.nr, | |
08fd81c9 | 1132 | commit_to_sha1); |
6c622f9f DS |
1133 | |
1134 | if (edge_value >= 0) | |
1135 | edge_value += ctx->new_num_commits_in_base; | |
8a6ac287 | 1136 | else if (ctx->new_base_graph) { |
6c622f9f DS |
1137 | uint32_t pos; |
1138 | if (find_commit_in_graph(parent->item, | |
1139 | ctx->new_base_graph, | |
1140 | &pos)) | |
1141 | edge_value = pos; | |
1142 | } | |
1143 | ||
08fd81c9 | 1144 | if (edge_value < 0) |
cce99cd8 DS |
1145 | BUG("missing parent %s for commit %s", |
1146 | oid_to_hex(&parent->item->object.oid), | |
1147 | oid_to_hex(&(*list)->object.oid)); | |
08fd81c9 DS |
1148 | } |
1149 | ||
1150 | hashwrite_be32(f, edge_value); | |
1151 | ||
5af7417b | 1152 | if (edge_value & GRAPH_EXTRA_EDGES_NEEDED) { |
08fd81c9 DS |
1153 | do { |
1154 | num_extra_edges++; | |
1155 | parent = parent->next; | |
1156 | } while (parent); | |
1157 | } | |
1158 | ||
1159 | if (sizeof((*list)->date) > 4) | |
1160 | packedDate[0] = htonl(((*list)->date >> 32) & 0x3); | |
1161 | else | |
1162 | packedDate[0] = 0; | |
1163 | ||
72a2bfca | 1164 | packedDate[0] |= htonl(*topo_level_slab_at(ctx->topo_levels, *list) << 2); |
3258c663 | 1165 | |
08fd81c9 DS |
1166 | packedDate[1] = htonl((*list)->date); |
1167 | hashwrite(f, packedDate, 8); | |
1168 | ||
1169 | list++; | |
1170 | } | |
9bab081d SG |
1171 | |
1172 | return 0; | |
08fd81c9 DS |
1173 | } |
1174 | ||
e8b63005 AK |
1175 | static int write_graph_chunk_generation_data(struct hashfile *f, |
1176 | struct write_commit_graph_context *ctx) | |
1177 | { | |
1178 | int i, num_generation_data_overflows = 0; | |
1179 | ||
1180 | for (i = 0; i < ctx->commits.nr; i++) { | |
1181 | struct commit *c = ctx->commits.list[i]; | |
1182 | timestamp_t offset = commit_graph_data_at(c)->generation - c->date; | |
1183 | display_progress(ctx->progress, ++ctx->progress_cnt); | |
1184 | ||
1185 | if (offset > GENERATION_NUMBER_V2_OFFSET_MAX) { | |
1186 | offset = CORRECTED_COMMIT_DATE_OFFSET_OVERFLOW | num_generation_data_overflows; | |
1187 | num_generation_data_overflows++; | |
1188 | } | |
1189 | ||
1190 | hashwrite_be32(f, offset); | |
1191 | } | |
1192 | ||
1193 | return 0; | |
1194 | } | |
1195 | ||
1196 | static int write_graph_chunk_generation_data_overflow(struct hashfile *f, | |
1197 | struct write_commit_graph_context *ctx) | |
1198 | { | |
1199 | int i; | |
1200 | for (i = 0; i < ctx->commits.nr; i++) { | |
1201 | struct commit *c = ctx->commits.list[i]; | |
1202 | timestamp_t offset = commit_graph_data_at(c)->generation - c->date; | |
1203 | display_progress(ctx->progress, ++ctx->progress_cnt); | |
1204 | ||
1205 | if (offset > GENERATION_NUMBER_V2_OFFSET_MAX) { | |
1206 | hashwrite_be32(f, offset >> 32); | |
1207 | hashwrite_be32(f, (uint32_t) offset); | |
1208 | } | |
1209 | } | |
1210 | ||
1211 | return 0; | |
1212 | } | |
1213 | ||
9bab081d SG |
1214 | static int write_graph_chunk_extra_edges(struct hashfile *f, |
1215 | struct write_commit_graph_context *ctx) | |
08fd81c9 | 1216 | { |
c9905bea DS |
1217 | struct commit **list = ctx->commits.list; |
1218 | struct commit **last = ctx->commits.list + ctx->commits.nr; | |
08fd81c9 DS |
1219 | struct commit_list *parent; |
1220 | ||
1221 | while (list < last) { | |
1222 | int num_parents = 0; | |
53035c4f | 1223 | |
c9905bea | 1224 | display_progress(ctx->progress, ++ctx->progress_cnt); |
53035c4f | 1225 | |
08fd81c9 DS |
1226 | for (parent = (*list)->parents; num_parents < 3 && parent; |
1227 | parent = parent->next) | |
1228 | num_parents++; | |
1229 | ||
1230 | if (num_parents <= 2) { | |
1231 | list++; | |
1232 | continue; | |
1233 | } | |
1234 | ||
1235 | /* Since num_parents > 2, this initializer is safe. */ | |
1236 | for (parent = (*list)->parents->next; parent; parent = parent->next) { | |
1237 | int edge_value = sha1_pos(parent->item->object.oid.hash, | |
c9905bea DS |
1238 | ctx->commits.list, |
1239 | ctx->commits.nr, | |
08fd81c9 DS |
1240 | commit_to_sha1); |
1241 | ||
6c622f9f DS |
1242 | if (edge_value >= 0) |
1243 | edge_value += ctx->new_num_commits_in_base; | |
8a6ac287 | 1244 | else if (ctx->new_base_graph) { |
6c622f9f DS |
1245 | uint32_t pos; |
1246 | if (find_commit_in_graph(parent->item, | |
1247 | ctx->new_base_graph, | |
1248 | &pos)) | |
1249 | edge_value = pos; | |
1250 | } | |
1251 | ||
08fd81c9 | 1252 | if (edge_value < 0) |
cce99cd8 DS |
1253 | BUG("missing parent %s for commit %s", |
1254 | oid_to_hex(&parent->item->object.oid), | |
1255 | oid_to_hex(&(*list)->object.oid)); | |
08fd81c9 DS |
1256 | else if (!parent->next) |
1257 | edge_value |= GRAPH_LAST_EDGE; | |
1258 | ||
1259 | hashwrite_be32(f, edge_value); | |
1260 | } | |
1261 | ||
1262 | list++; | |
1263 | } | |
9bab081d SG |
1264 | |
1265 | return 0; | |
08fd81c9 DS |
1266 | } |
1267 | ||
9bab081d SG |
1268 | static int write_graph_chunk_bloom_indexes(struct hashfile *f, |
1269 | struct write_commit_graph_context *ctx) | |
76ffbca7 GS |
1270 | { |
1271 | struct commit **list = ctx->commits.list; | |
1272 | struct commit **last = ctx->commits.list + ctx->commits.nr; | |
1273 | uint32_t cur_pos = 0; | |
76ffbca7 GS |
1274 | |
1275 | while (list < last) { | |
312cff52 | 1276 | struct bloom_filter *filter = get_bloom_filter(ctx->r, *list); |
94919742 DS |
1277 | size_t len = filter ? filter->len : 0; |
1278 | cur_pos += len; | |
150cd3b6 | 1279 | display_progress(ctx->progress, ++ctx->progress_cnt); |
76ffbca7 GS |
1280 | hashwrite_be32(f, cur_pos); |
1281 | list++; | |
1282 | } | |
1283 | ||
9bab081d | 1284 | return 0; |
76ffbca7 GS |
1285 | } |
1286 | ||
0087a87b DS |
1287 | static void trace2_bloom_filter_settings(struct write_commit_graph_context *ctx) |
1288 | { | |
1289 | struct json_writer jw = JSON_WRITER_INIT; | |
1290 | ||
1291 | jw_object_begin(&jw, 0); | |
1292 | jw_object_intmax(&jw, "hash_version", ctx->bloom_settings->hash_version); | |
1293 | jw_object_intmax(&jw, "num_hashes", ctx->bloom_settings->num_hashes); | |
1294 | jw_object_intmax(&jw, "bits_per_entry", ctx->bloom_settings->bits_per_entry); | |
97ffa4fa | 1295 | jw_object_intmax(&jw, "max_changed_paths", ctx->bloom_settings->max_changed_paths); |
0087a87b DS |
1296 | jw_end(&jw); |
1297 | ||
1298 | trace2_data_json("bloom", ctx->r, "settings", &jw); | |
1299 | ||
1300 | jw_release(&jw); | |
76ffbca7 GS |
1301 | } |
1302 | ||
9bab081d SG |
1303 | static int write_graph_chunk_bloom_data(struct hashfile *f, |
1304 | struct write_commit_graph_context *ctx) | |
76ffbca7 GS |
1305 | { |
1306 | struct commit **list = ctx->commits.list; | |
1307 | struct commit **last = ctx->commits.list + ctx->commits.nr; | |
76ffbca7 | 1308 | |
0087a87b DS |
1309 | trace2_bloom_filter_settings(ctx); |
1310 | ||
98037f2b DS |
1311 | hashwrite_be32(f, ctx->bloom_settings->hash_version); |
1312 | hashwrite_be32(f, ctx->bloom_settings->num_hashes); | |
1313 | hashwrite_be32(f, ctx->bloom_settings->bits_per_entry); | |
76ffbca7 GS |
1314 | |
1315 | while (list < last) { | |
312cff52 | 1316 | struct bloom_filter *filter = get_bloom_filter(ctx->r, *list); |
94919742 | 1317 | size_t len = filter ? filter->len : 0; |
94919742 | 1318 | |
150cd3b6 | 1319 | display_progress(ctx->progress, ++ctx->progress_cnt); |
94919742 DS |
1320 | if (len) |
1321 | hashwrite(f, filter->data, len * sizeof(unsigned char)); | |
76ffbca7 GS |
1322 | list++; |
1323 | } | |
1324 | ||
9bab081d | 1325 | return 0; |
76ffbca7 GS |
1326 | } |
1327 | ||
08fd81c9 DS |
1328 | static int add_packed_commits(const struct object_id *oid, |
1329 | struct packed_git *pack, | |
1330 | uint32_t pos, | |
1331 | void *data) | |
1332 | { | |
c9905bea | 1333 | struct write_commit_graph_context *ctx = (struct write_commit_graph_context*)data; |
08fd81c9 DS |
1334 | enum object_type type; |
1335 | off_t offset = nth_packed_object_offset(pack, pos); | |
1336 | struct object_info oi = OBJECT_INFO_INIT; | |
1337 | ||
c9905bea DS |
1338 | if (ctx->progress) |
1339 | display_progress(ctx->progress, ++ctx->progress_done); | |
7b0f2292 | 1340 | |
08fd81c9 | 1341 | oi.typep = &type; |
c9905bea | 1342 | if (packed_object_info(ctx->r, pack, offset, &oi) < 0) |
4f5b532d | 1343 | die(_("unable to get type of object %s"), oid_to_hex(oid)); |
08fd81c9 DS |
1344 | |
1345 | if (type != OBJ_COMMIT) | |
1346 | return 0; | |
1347 | ||
a5f1c448 | 1348 | oid_array_append(&ctx->oids, oid); |
d21ee7d1 JK |
1349 | set_commit_pos(ctx->r, oid); |
1350 | ||
08fd81c9 DS |
1351 | return 0; |
1352 | } | |
1353 | ||
c9905bea | 1354 | static void add_missing_parents(struct write_commit_graph_context *ctx, struct commit *commit) |
4f2542b4 DS |
1355 | { |
1356 | struct commit_list *parent; | |
1357 | for (parent = commit->parents; parent; parent = parent->next) { | |
cb99a34e | 1358 | if (!(parent->item->object.flags & REACHABLE)) { |
a5f1c448 | 1359 | oid_array_append(&ctx->oids, &parent->item->object.oid); |
cb99a34e | 1360 | parent->item->object.flags |= REACHABLE; |
4f2542b4 DS |
1361 | } |
1362 | } | |
1363 | } | |
1364 | ||
c9905bea | 1365 | static void close_reachable(struct write_commit_graph_context *ctx) |
4f2542b4 | 1366 | { |
49bbc57a | 1367 | int i; |
4f2542b4 | 1368 | struct commit *commit; |
98bb7961 TB |
1369 | enum commit_graph_split_flags flags = ctx->opts ? |
1370 | ctx->opts->split_flags : COMMIT_GRAPH_SPLIT_UNSPECIFIED; | |
4f2542b4 | 1371 | |
c9905bea DS |
1372 | if (ctx->report_progress) |
1373 | ctx->progress = start_delayed_progress( | |
1374 | _("Loading known commits in commit graph"), | |
1375 | ctx->oids.nr); | |
1376 | for (i = 0; i < ctx->oids.nr; i++) { | |
1377 | display_progress(ctx->progress, i + 1); | |
a5f1c448 | 1378 | commit = lookup_commit(ctx->r, &ctx->oids.oid[i]); |
4f2542b4 | 1379 | if (commit) |
cb99a34e | 1380 | commit->object.flags |= REACHABLE; |
4f2542b4 | 1381 | } |
c9905bea | 1382 | stop_progress(&ctx->progress); |
4f2542b4 DS |
1383 | |
1384 | /* | |
c9905bea | 1385 | * As this loop runs, ctx->oids.nr may grow, but not more |
4f2542b4 DS |
1386 | * than the number of missing commits in the reachable |
1387 | * closure. | |
1388 | */ | |
c9905bea DS |
1389 | if (ctx->report_progress) |
1390 | ctx->progress = start_delayed_progress( | |
1391 | _("Expanding reachable commits in commit graph"), | |
67fa6aac | 1392 | 0); |
c9905bea DS |
1393 | for (i = 0; i < ctx->oids.nr; i++) { |
1394 | display_progress(ctx->progress, i + 1); | |
a5f1c448 | 1395 | commit = lookup_commit(ctx->r, &ctx->oids.oid[i]); |
4f2542b4 | 1396 | |
6c622f9f DS |
1397 | if (!commit) |
1398 | continue; | |
1399 | if (ctx->split) { | |
8a6ac287 | 1400 | if ((!parse_commit(commit) && |
c49c82aa | 1401 | commit_graph_position(commit) == COMMIT_NOT_FROM_GRAPH) || |
8a6ac287 | 1402 | flags == COMMIT_GRAPH_SPLIT_REPLACE) |
6c622f9f DS |
1403 | add_missing_parents(ctx, commit); |
1404 | } else if (!parse_commit_no_graph(commit)) | |
c9905bea | 1405 | add_missing_parents(ctx, commit); |
4f2542b4 | 1406 | } |
c9905bea | 1407 | stop_progress(&ctx->progress); |
4f2542b4 | 1408 | |
c9905bea DS |
1409 | if (ctx->report_progress) |
1410 | ctx->progress = start_delayed_progress( | |
1411 | _("Clearing commit marks in commit graph"), | |
1412 | ctx->oids.nr); | |
1413 | for (i = 0; i < ctx->oids.nr; i++) { | |
1414 | display_progress(ctx->progress, i + 1); | |
a5f1c448 | 1415 | commit = lookup_commit(ctx->r, &ctx->oids.oid[i]); |
4f2542b4 DS |
1416 | |
1417 | if (commit) | |
cb99a34e | 1418 | commit->object.flags &= ~REACHABLE; |
4f2542b4 | 1419 | } |
c9905bea | 1420 | stop_progress(&ctx->progress); |
4f2542b4 DS |
1421 | } |
1422 | ||
c9905bea | 1423 | static void compute_generation_numbers(struct write_commit_graph_context *ctx) |
3258c663 DS |
1424 | { |
1425 | int i; | |
1426 | struct commit_list *list = NULL; | |
1427 | ||
c9905bea | 1428 | if (ctx->report_progress) |
ecc08690 | 1429 | ctx->progress = start_delayed_progress( |
c9905bea DS |
1430 | _("Computing commit graph generation numbers"), |
1431 | ctx->commits.nr); | |
1432 | for (i = 0; i < ctx->commits.nr; i++) { | |
72a2bfca | 1433 | uint32_t level = *topo_level_slab_at(ctx->topo_levels, ctx->commits.list[i]); |
c1a09119 | 1434 | timestamp_t corrected_commit_date = commit_graph_data_at(ctx->commits.list[i])->generation; |
4844812b | 1435 | |
c9905bea | 1436 | display_progress(ctx->progress, i + 1); |
c1a09119 AK |
1437 | if (level != GENERATION_NUMBER_ZERO && |
1438 | corrected_commit_date != GENERATION_NUMBER_ZERO) | |
3258c663 DS |
1439 | continue; |
1440 | ||
c9905bea | 1441 | commit_list_insert(ctx->commits.list[i], &list); |
3258c663 DS |
1442 | while (list) { |
1443 | struct commit *current = list->item; | |
1444 | struct commit_list *parent; | |
1445 | int all_parents_computed = 1; | |
72a2bfca | 1446 | uint32_t max_level = 0; |
c1a09119 | 1447 | timestamp_t max_corrected_commit_date = 0; |
3258c663 DS |
1448 | |
1449 | for (parent = current->parents; parent; parent = parent->next) { | |
72a2bfca | 1450 | level = *topo_level_slab_at(ctx->topo_levels, parent->item); |
c1a09119 | 1451 | corrected_commit_date = commit_graph_data_at(parent->item)->generation; |
4844812b | 1452 | |
c1a09119 AK |
1453 | if (level == GENERATION_NUMBER_ZERO || |
1454 | corrected_commit_date == GENERATION_NUMBER_ZERO) { | |
3258c663 DS |
1455 | all_parents_computed = 0; |
1456 | commit_list_insert(parent->item, &list); | |
1457 | break; | |
3258c663 | 1458 | } |
c1a09119 AK |
1459 | |
1460 | if (level > max_level) | |
1461 | max_level = level; | |
1462 | ||
1463 | if (corrected_commit_date > max_corrected_commit_date) | |
1464 | max_corrected_commit_date = corrected_commit_date; | |
3258c663 DS |
1465 | } |
1466 | ||
1467 | if (all_parents_computed) { | |
3258c663 DS |
1468 | pop_commit(&list); |
1469 | ||
d7f92784 AK |
1470 | if (max_level > GENERATION_NUMBER_V1_MAX - 1) |
1471 | max_level = GENERATION_NUMBER_V1_MAX - 1; | |
72a2bfca | 1472 | *topo_level_slab_at(ctx->topo_levels, current) = max_level + 1; |
c1a09119 AK |
1473 | |
1474 | if (current->date && current->date > max_corrected_commit_date) | |
1475 | max_corrected_commit_date = current->date - 1; | |
1476 | commit_graph_data_at(current)->generation = max_corrected_commit_date + 1; | |
e8b63005 AK |
1477 | |
1478 | if (commit_graph_data_at(current)->generation - current->date > GENERATION_NUMBER_V2_OFFSET_MAX) | |
1479 | ctx->num_generation_data_overflows++; | |
3258c663 DS |
1480 | } |
1481 | } | |
1482 | } | |
c9905bea | 1483 | stop_progress(&ctx->progress); |
3258c663 DS |
1484 | } |
1485 | ||
312cff52 TB |
1486 | static void trace2_bloom_filter_write_statistics(struct write_commit_graph_context *ctx) |
1487 | { | |
1488 | trace2_data_intmax("commit-graph", ctx->r, "filter-computed", | |
1489 | ctx->count_bloom_filter_computed); | |
1490 | trace2_data_intmax("commit-graph", ctx->r, "filter-not-computed", | |
1491 | ctx->count_bloom_filter_not_computed); | |
59f0d507 TB |
1492 | trace2_data_intmax("commit-graph", ctx->r, "filter-trunc-empty", |
1493 | ctx->count_bloom_filter_trunc_empty); | |
312cff52 TB |
1494 | trace2_data_intmax("commit-graph", ctx->r, "filter-trunc-large", |
1495 | ctx->count_bloom_filter_trunc_large); | |
1496 | } | |
1497 | ||
f97b9325 GS |
1498 | static void compute_bloom_filters(struct write_commit_graph_context *ctx) |
1499 | { | |
1500 | int i; | |
1501 | struct progress *progress = NULL; | |
d21ee7d1 | 1502 | struct commit **sorted_commits; |
809e0327 | 1503 | int max_new_filters; |
f97b9325 GS |
1504 | |
1505 | init_bloom_filters(); | |
1506 | ||
1507 | if (ctx->report_progress) | |
1508 | progress = start_delayed_progress( | |
1509 | _("Computing commit changed paths Bloom filters"), | |
1510 | ctx->commits.nr); | |
1511 | ||
d21ee7d1 JK |
1512 | ALLOC_ARRAY(sorted_commits, ctx->commits.nr); |
1513 | COPY_ARRAY(sorted_commits, ctx->commits.list, ctx->commits.nr); | |
3d112755 GS |
1514 | |
1515 | if (ctx->order_by_pack) | |
1516 | QSORT(sorted_commits, ctx->commits.nr, commit_pos_cmp); | |
1517 | else | |
1518 | QSORT(sorted_commits, ctx->commits.nr, commit_gen_cmp); | |
d21ee7d1 | 1519 | |
809e0327 TB |
1520 | max_new_filters = ctx->opts && ctx->opts->max_new_filters >= 0 ? |
1521 | ctx->opts->max_new_filters : ctx->commits.nr; | |
1522 | ||
f97b9325 | 1523 | for (i = 0; i < ctx->commits.nr; i++) { |
312cff52 | 1524 | enum bloom_filter_computed computed = 0; |
d21ee7d1 | 1525 | struct commit *c = sorted_commits[i]; |
312cff52 TB |
1526 | struct bloom_filter *filter = get_or_compute_bloom_filter( |
1527 | ctx->r, | |
1528 | c, | |
809e0327 | 1529 | ctx->count_bloom_filter_computed < max_new_filters, |
9a7a9ed1 | 1530 | ctx->bloom_settings, |
312cff52 TB |
1531 | &computed); |
1532 | if (computed & BLOOM_COMPUTED) { | |
1533 | ctx->count_bloom_filter_computed++; | |
59f0d507 TB |
1534 | if (computed & BLOOM_TRUNC_EMPTY) |
1535 | ctx->count_bloom_filter_trunc_empty++; | |
312cff52 TB |
1536 | if (computed & BLOOM_TRUNC_LARGE) |
1537 | ctx->count_bloom_filter_trunc_large++; | |
1538 | } else if (computed & BLOOM_NOT_COMPUTED) | |
1539 | ctx->count_bloom_filter_not_computed++; | |
809e0327 TB |
1540 | ctx->total_bloom_filter_data_size += filter |
1541 | ? sizeof(unsigned char) * filter->len : 0; | |
f97b9325 GS |
1542 | display_progress(progress, i + 1); |
1543 | } | |
1544 | ||
312cff52 TB |
1545 | if (trace2_is_enabled()) |
1546 | trace2_bloom_filter_write_statistics(ctx); | |
1547 | ||
d21ee7d1 | 1548 | free(sorted_commits); |
f97b9325 GS |
1549 | stop_progress(&progress); |
1550 | } | |
1551 | ||
1fe10844 TB |
1552 | struct refs_cb_data { |
1553 | struct oidset *commits; | |
d335ce8f | 1554 | struct progress *progress; |
1fe10844 TB |
1555 | }; |
1556 | ||
6830c360 TB |
1557 | static int add_ref_to_set(const char *refname, |
1558 | const struct object_id *oid, | |
1559 | int flags, void *cb_data) | |
59fb8770 | 1560 | { |
630cd519 | 1561 | struct object_id peeled; |
1fe10844 | 1562 | struct refs_cb_data *data = (struct refs_cb_data *)cb_data; |
59fb8770 | 1563 | |
630cd519 TB |
1564 | if (!peel_ref(refname, &peeled)) |
1565 | oid = &peeled; | |
1566 | if (oid_object_info(the_repository, oid, NULL) == OBJ_COMMIT) | |
1567 | oidset_insert(data->commits, oid); | |
d335ce8f TB |
1568 | |
1569 | display_progress(data->progress, oidset_size(data->commits)); | |
59fb8770 | 1570 | |
59fb8770 DS |
1571 | return 0; |
1572 | } | |
1573 | ||
0bd52e27 | 1574 | int write_commit_graph_reachable(struct object_directory *odb, |
39d88318 | 1575 | enum commit_graph_write_flags flags, |
98bb7961 | 1576 | const struct commit_graph_opts *opts) |
59fb8770 | 1577 | { |
6830c360 | 1578 | struct oidset commits = OIDSET_INIT; |
1fe10844 | 1579 | struct refs_cb_data data; |
e103f727 | 1580 | int result; |
59fb8770 | 1581 | |
1fe10844 TB |
1582 | memset(&data, 0, sizeof(data)); |
1583 | data.commits = &commits; | |
d335ce8f TB |
1584 | if (flags & COMMIT_GRAPH_WRITE_PROGRESS) |
1585 | data.progress = start_delayed_progress( | |
1586 | _("Collecting referenced commits"), 0); | |
1fe10844 TB |
1587 | |
1588 | for_each_ref(add_ref_to_set, &data); | |
6f9d5f2f SG |
1589 | |
1590 | stop_progress(&data.progress); | |
1591 | ||
6830c360 | 1592 | result = write_commit_graph(odb, NULL, &commits, |
98bb7961 | 1593 | flags, opts); |
f4dbdfc4 | 1594 | |
6830c360 | 1595 | oidset_clear(&commits); |
e103f727 | 1596 | return result; |
59fb8770 DS |
1597 | } |
1598 | ||
ef5b83f2 DS |
1599 | static int fill_oids_from_packs(struct write_commit_graph_context *ctx, |
1600 | struct string_list *pack_indexes) | |
08fd81c9 | 1601 | { |
ef5b83f2 | 1602 | uint32_t i; |
28944739 | 1603 | struct strbuf progress_title = STRBUF_INIT; |
ef5b83f2 DS |
1604 | struct strbuf packname = STRBUF_INIT; |
1605 | int dirlen; | |
08fd81c9 | 1606 | |
0bd52e27 | 1607 | strbuf_addf(&packname, "%s/pack/", ctx->odb->path); |
ef5b83f2 DS |
1608 | dirlen = packname.len; |
1609 | if (ctx->report_progress) { | |
1610 | strbuf_addf(&progress_title, | |
1611 | Q_("Finding commits for commit graph in %d pack", | |
1612 | "Finding commits for commit graph in %d packs", | |
1613 | pack_indexes->nr), | |
1614 | pack_indexes->nr); | |
1615 | ctx->progress = start_delayed_progress(progress_title.buf, 0); | |
1616 | ctx->progress_done = 0; | |
7547b95b | 1617 | } |
ef5b83f2 DS |
1618 | for (i = 0; i < pack_indexes->nr; i++) { |
1619 | struct packed_git *p; | |
1620 | strbuf_setlen(&packname, dirlen); | |
1621 | strbuf_addstr(&packname, pack_indexes->items[i].string); | |
1622 | p = add_packed_git(packname.buf, packname.len, 1); | |
1623 | if (!p) { | |
1624 | error(_("error adding pack %s"), packname.buf); | |
1625 | return -1; | |
7547b95b | 1626 | } |
ef5b83f2 DS |
1627 | if (open_pack_index(p)) { |
1628 | error(_("error opening index for %s"), packname.buf); | |
1629 | return -1; | |
1630 | } | |
1631 | for_each_object_in_pack(p, add_packed_commits, ctx, | |
1632 | FOR_EACH_OBJECT_PACK_ORDER); | |
1633 | close_pack(p); | |
1634 | free(p); | |
7547b95b DS |
1635 | } |
1636 | ||
ef5b83f2 | 1637 | stop_progress(&ctx->progress); |
0aa6bce7 | 1638 | strbuf_release(&progress_title); |
ef5b83f2 DS |
1639 | strbuf_release(&packname); |
1640 | ||
1641 | return 0; | |
1642 | } | |
1643 | ||
6830c360 TB |
1644 | static int fill_oids_from_commits(struct write_commit_graph_context *ctx, |
1645 | struct oidset *commits) | |
4c9efe85 | 1646 | { |
6830c360 TB |
1647 | struct oidset_iter iter; |
1648 | struct object_id *oid; | |
1649 | ||
1650 | if (!oidset_size(commits)) | |
1651 | return 0; | |
4c9efe85 | 1652 | |
6830c360 TB |
1653 | oidset_iter_init(commits, &iter); |
1654 | while ((oid = oidset_iter_next(&iter))) { | |
a5f1c448 | 1655 | oid_array_append(&ctx->oids, oid); |
3d5df01b | 1656 | } |
6830c360 | 1657 | |
7c5c9b9c | 1658 | return 0; |
4c9efe85 | 1659 | } |
3d5df01b | 1660 | |
b2c83060 DS |
1661 | static void fill_oids_from_all_packs(struct write_commit_graph_context *ctx) |
1662 | { | |
1663 | if (ctx->report_progress) | |
1664 | ctx->progress = start_delayed_progress( | |
1665 | _("Finding commits for commit graph among packed objects"), | |
1666 | ctx->approx_nr_objects); | |
1667 | for_each_packed_object(add_packed_commits, ctx, | |
1668 | FOR_EACH_OBJECT_PACK_ORDER); | |
1669 | if (ctx->progress_done < ctx->approx_nr_objects) | |
1670 | display_progress(ctx->progress, ctx->approx_nr_objects); | |
1671 | stop_progress(&ctx->progress); | |
1672 | } | |
049d51a2 | 1673 | |
f998d542 DS |
1674 | static void copy_oids_to_commits(struct write_commit_graph_context *ctx) |
1675 | { | |
1676 | uint32_t i; | |
98bb7961 TB |
1677 | enum commit_graph_split_flags flags = ctx->opts ? |
1678 | ctx->opts->split_flags : COMMIT_GRAPH_SPLIT_UNSPECIFIED; | |
08fd81c9 | 1679 | |
f998d542 DS |
1680 | ctx->num_extra_edges = 0; |
1681 | if (ctx->report_progress) | |
1682 | ctx->progress = start_delayed_progress( | |
890226cc | 1683 | _("Finding extra edges in commit graph"), |
f998d542 | 1684 | ctx->oids.nr); |
a5f1c448 JK |
1685 | oid_array_sort(&ctx->oids); |
1686 | for (i = 0; i < ctx->oids.nr; i = oid_array_next_unique(&ctx->oids, i)) { | |
689a146c RS |
1687 | unsigned int num_parents; |
1688 | ||
f998d542 | 1689 | display_progress(ctx->progress, i + 1); |
08fd81c9 | 1690 | |
6c622f9f | 1691 | ALLOC_GROW(ctx->commits.list, ctx->commits.nr + 1, ctx->commits.alloc); |
a5f1c448 | 1692 | ctx->commits.list[ctx->commits.nr] = lookup_commit(ctx->r, &ctx->oids.oid[i]); |
6c622f9f | 1693 | |
8a6ac287 | 1694 | if (ctx->split && flags != COMMIT_GRAPH_SPLIT_REPLACE && |
c49c82aa | 1695 | commit_graph_position(ctx->commits.list[ctx->commits.nr]) != COMMIT_NOT_FROM_GRAPH) |
6c622f9f DS |
1696 | continue; |
1697 | ||
8a6ac287 TB |
1698 | if (ctx->split && flags == COMMIT_GRAPH_SPLIT_REPLACE) |
1699 | parse_commit(ctx->commits.list[ctx->commits.nr]); | |
1700 | else | |
1701 | parse_commit_no_graph(ctx->commits.list[ctx->commits.nr]); | |
08fd81c9 | 1702 | |
689a146c | 1703 | num_parents = commit_list_count(ctx->commits.list[ctx->commits.nr]->parents); |
08fd81c9 | 1704 | if (num_parents > 2) |
f998d542 | 1705 | ctx->num_extra_edges += num_parents - 1; |
08fd81c9 | 1706 | |
f998d542 | 1707 | ctx->commits.nr++; |
08fd81c9 | 1708 | } |
f998d542 DS |
1709 | stop_progress(&ctx->progress); |
1710 | } | |
08fd81c9 | 1711 | |
6c622f9f DS |
1712 | static int write_graph_chunk_base_1(struct hashfile *f, |
1713 | struct commit_graph *g) | |
1714 | { | |
1715 | int num = 0; | |
1716 | ||
1717 | if (!g) | |
1718 | return 0; | |
1719 | ||
1720 | num = write_graph_chunk_base_1(f, g->base_graph); | |
1721 | hashwrite(f, g->oid.hash, the_hash_algo->rawsz); | |
1722 | return num + 1; | |
1723 | } | |
1724 | ||
1725 | static int write_graph_chunk_base(struct hashfile *f, | |
1726 | struct write_commit_graph_context *ctx) | |
1727 | { | |
1728 | int num = write_graph_chunk_base_1(f, ctx->new_base_graph); | |
1729 | ||
1730 | if (num != ctx->num_commit_graphs_after - 1) { | |
1731 | error(_("failed to write correct number of base graph ids")); | |
1732 | return -1; | |
1733 | } | |
1734 | ||
1735 | return 0; | |
1736 | } | |
1737 | ||
17e6275f SG |
1738 | typedef int (*chunk_write_fn)(struct hashfile *f, |
1739 | struct write_commit_graph_context *ctx); | |
1740 | ||
7fbfe07a SG |
1741 | struct chunk_info { |
1742 | uint32_t id; | |
1743 | uint64_t size; | |
17e6275f | 1744 | chunk_write_fn write_fn; |
7fbfe07a SG |
1745 | }; |
1746 | ||
238def57 | 1747 | static int write_commit_graph_file(struct write_commit_graph_context *ctx) |
08fd81c9 | 1748 | { |
238def57 | 1749 | uint32_t i; |
6c622f9f | 1750 | int fd; |
08fd81c9 | 1751 | struct hashfile *f; |
08fd81c9 | 1752 | struct lock_file lk = LOCK_INIT; |
7fbfe07a | 1753 | struct chunk_info chunks[MAX_NUM_CHUNKS + 1]; |
c1665998 | 1754 | const unsigned hashsz = the_hash_algo->rawsz; |
28944739 | 1755 | struct strbuf progress_title = STRBUF_INIT; |
144354b0 | 1756 | int num_chunks = 3; |
bb4d60e5 | 1757 | uint64_t chunk_offset; |
6c622f9f DS |
1758 | struct object_id file_hash; |
1759 | ||
1760 | if (ctx->split) { | |
1761 | struct strbuf tmp_file = STRBUF_INIT; | |
1762 | ||
1763 | strbuf_addf(&tmp_file, | |
1764 | "%s/info/commit-graphs/tmp_graph_XXXXXX", | |
0bd52e27 | 1765 | ctx->odb->path); |
6c622f9f DS |
1766 | ctx->graph_name = strbuf_detach(&tmp_file, NULL); |
1767 | } else { | |
ad2dd5bb | 1768 | ctx->graph_name = get_commit_graph_filename(ctx->odb); |
6c622f9f | 1769 | } |
238def57 | 1770 | |
238def57 DS |
1771 | if (safe_create_leading_directories(ctx->graph_name)) { |
1772 | UNLEAK(ctx->graph_name); | |
1773 | error(_("unable to create leading directories of %s"), | |
1774 | ctx->graph_name); | |
1775 | return -1; | |
f4dbdfc4 | 1776 | } |
08fd81c9 | 1777 | |
6c622f9f | 1778 | if (ctx->split) { |
663b2b1b | 1779 | char *lock_name = get_commit_graph_chain_filename(ctx->odb); |
08fd81c9 | 1780 | |
45a4365c TB |
1781 | hold_lock_file_for_update_mode(&lk, lock_name, |
1782 | LOCK_DIE_ON_ERROR, 0444); | |
08fd81c9 | 1783 | |
6c622f9f DS |
1784 | fd = git_mkstemp_mode(ctx->graph_name, 0444); |
1785 | if (fd < 0) { | |
a2d57e22 | 1786 | error(_("unable to create temporary graph layer")); |
6c622f9f DS |
1787 | return -1; |
1788 | } | |
1789 | ||
f4d62847 TB |
1790 | if (adjust_shared_perm(ctx->graph_name)) { |
1791 | error(_("unable to adjust shared permissions for '%s'"), | |
1792 | ctx->graph_name); | |
1793 | return -1; | |
1794 | } | |
1795 | ||
6c622f9f DS |
1796 | f = hashfd(fd, ctx->graph_name); |
1797 | } else { | |
1f9becae TB |
1798 | hold_lock_file_for_update_mode(&lk, ctx->graph_name, |
1799 | LOCK_DIE_ON_ERROR, 0444); | |
6c622f9f DS |
1800 | fd = lk.tempfile->fd; |
1801 | f = hashfd(lk.tempfile->fd, lk.tempfile->filename.buf); | |
1802 | } | |
08fd81c9 | 1803 | |
7fbfe07a SG |
1804 | chunks[0].id = GRAPH_CHUNKID_OIDFANOUT; |
1805 | chunks[0].size = GRAPH_FANOUT_SIZE; | |
17e6275f | 1806 | chunks[0].write_fn = write_graph_chunk_fanout; |
7fbfe07a SG |
1807 | chunks[1].id = GRAPH_CHUNKID_OIDLOOKUP; |
1808 | chunks[1].size = hashsz * ctx->commits.nr; | |
17e6275f | 1809 | chunks[1].write_fn = write_graph_chunk_oids; |
7fbfe07a SG |
1810 | chunks[2].id = GRAPH_CHUNKID_DATA; |
1811 | chunks[2].size = (hashsz + 16) * ctx->commits.nr; | |
17e6275f | 1812 | chunks[2].write_fn = write_graph_chunk_data; |
e8b63005 AK |
1813 | |
1814 | if (git_env_bool(GIT_TEST_COMMIT_GRAPH_NO_GDAT, 0)) | |
1815 | ctx->write_generation_data = 0; | |
1816 | if (ctx->write_generation_data) { | |
1817 | chunks[num_chunks].id = GRAPH_CHUNKID_GENERATION_DATA; | |
1818 | chunks[num_chunks].size = sizeof(uint32_t) * ctx->commits.nr; | |
1819 | chunks[num_chunks].write_fn = write_graph_chunk_generation_data; | |
1820 | num_chunks++; | |
1821 | } | |
1822 | if (ctx->num_generation_data_overflows) { | |
1823 | chunks[num_chunks].id = GRAPH_CHUNKID_GENERATION_DATA_OVERFLOW; | |
1824 | chunks[num_chunks].size = sizeof(timestamp_t) * ctx->num_generation_data_overflows; | |
1825 | chunks[num_chunks].write_fn = write_graph_chunk_generation_data_overflow; | |
1826 | num_chunks++; | |
1827 | } | |
144354b0 | 1828 | if (ctx->num_extra_edges) { |
7fbfe07a SG |
1829 | chunks[num_chunks].id = GRAPH_CHUNKID_EXTRAEDGES; |
1830 | chunks[num_chunks].size = 4 * ctx->num_extra_edges; | |
17e6275f | 1831 | chunks[num_chunks].write_fn = write_graph_chunk_extra_edges; |
144354b0 DS |
1832 | num_chunks++; |
1833 | } | |
76ffbca7 | 1834 | if (ctx->changed_paths) { |
7fbfe07a SG |
1835 | chunks[num_chunks].id = GRAPH_CHUNKID_BLOOMINDEXES; |
1836 | chunks[num_chunks].size = sizeof(uint32_t) * ctx->commits.nr; | |
17e6275f | 1837 | chunks[num_chunks].write_fn = write_graph_chunk_bloom_indexes; |
76ffbca7 | 1838 | num_chunks++; |
7fbfe07a SG |
1839 | chunks[num_chunks].id = GRAPH_CHUNKID_BLOOMDATA; |
1840 | chunks[num_chunks].size = sizeof(uint32_t) * 3 | |
bb4d60e5 | 1841 | + ctx->total_bloom_filter_data_size; |
17e6275f | 1842 | chunks[num_chunks].write_fn = write_graph_chunk_bloom_data; |
76ffbca7 GS |
1843 | num_chunks++; |
1844 | } | |
6c622f9f | 1845 | if (ctx->num_commit_graphs_after > 1) { |
7fbfe07a SG |
1846 | chunks[num_chunks].id = GRAPH_CHUNKID_BASE; |
1847 | chunks[num_chunks].size = hashsz * (ctx->num_commit_graphs_after - 1); | |
17e6275f | 1848 | chunks[num_chunks].write_fn = write_graph_chunk_base; |
6c622f9f DS |
1849 | num_chunks++; |
1850 | } | |
144354b0 | 1851 | |
7fbfe07a SG |
1852 | chunks[num_chunks].id = 0; |
1853 | chunks[num_chunks].size = 0; | |
144354b0 DS |
1854 | |
1855 | hashwrite_be32(f, GRAPH_SIGNATURE); | |
1856 | ||
1857 | hashwrite_u8(f, GRAPH_VERSION); | |
1858 | hashwrite_u8(f, oid_version()); | |
1859 | hashwrite_u8(f, num_chunks); | |
6c622f9f | 1860 | hashwrite_u8(f, ctx->num_commit_graphs_after - 1); |
08fd81c9 | 1861 | |
bb4d60e5 | 1862 | chunk_offset = 8 + (num_chunks + 1) * GRAPH_CHUNKLOOKUP_WIDTH; |
08fd81c9 DS |
1863 | for (i = 0; i <= num_chunks; i++) { |
1864 | uint32_t chunk_write[3]; | |
1865 | ||
7fbfe07a | 1866 | chunk_write[0] = htonl(chunks[i].id); |
bb4d60e5 SG |
1867 | chunk_write[1] = htonl(chunk_offset >> 32); |
1868 | chunk_write[2] = htonl(chunk_offset & 0xffffffff); | |
08fd81c9 | 1869 | hashwrite(f, chunk_write, 12); |
bb4d60e5 | 1870 | |
7fbfe07a | 1871 | chunk_offset += chunks[i].size; |
08fd81c9 DS |
1872 | } |
1873 | ||
238def57 | 1874 | if (ctx->report_progress) { |
28944739 ÆAB |
1875 | strbuf_addf(&progress_title, |
1876 | Q_("Writing out commit graph in %d pass", | |
1877 | "Writing out commit graph in %d passes", | |
1878 | num_chunks), | |
1879 | num_chunks); | |
238def57 | 1880 | ctx->progress = start_delayed_progress( |
28944739 | 1881 | progress_title.buf, |
238def57 | 1882 | num_chunks * ctx->commits.nr); |
28944739 | 1883 | } |
17e6275f SG |
1884 | |
1885 | for (i = 0; i < num_chunks; i++) { | |
2dd4fed9 SG |
1886 | uint64_t start_offset = f->total + f->offset; |
1887 | ||
17e6275f SG |
1888 | if (chunks[i].write_fn(f, ctx)) |
1889 | return -1; | |
2dd4fed9 SG |
1890 | |
1891 | if (f->total + f->offset != start_offset + chunks[i].size) | |
1892 | BUG("expected to write %"PRId64" bytes to chunk %"PRIx32", but wrote %"PRId64" instead", | |
1893 | chunks[i].size, chunks[i].id, | |
1894 | f->total + f->offset - start_offset); | |
6c622f9f | 1895 | } |
17e6275f | 1896 | |
238def57 | 1897 | stop_progress(&ctx->progress); |
28944739 | 1898 | strbuf_release(&progress_title); |
08fd81c9 | 1899 | |
6c622f9f DS |
1900 | if (ctx->split && ctx->base_graph_name && ctx->num_commit_graphs_after > 1) { |
1901 | char *new_base_hash = xstrdup(oid_to_hex(&ctx->new_base_graph->oid)); | |
ad2dd5bb | 1902 | char *new_base_name = get_split_graph_filename(ctx->new_base_graph->odb, new_base_hash); |
6c622f9f DS |
1903 | |
1904 | free(ctx->commit_graph_filenames_after[ctx->num_commit_graphs_after - 2]); | |
1905 | free(ctx->commit_graph_hash_after[ctx->num_commit_graphs_after - 2]); | |
1906 | ctx->commit_graph_filenames_after[ctx->num_commit_graphs_after - 2] = new_base_name; | |
1907 | ctx->commit_graph_hash_after[ctx->num_commit_graphs_after - 2] = new_base_hash; | |
1908 | } | |
1909 | ||
c3a3a964 | 1910 | close_commit_graph(ctx->r->objects); |
6c622f9f DS |
1911 | finalize_hashfile(f, file_hash.hash, CSUM_HASH_IN_STREAM | CSUM_FSYNC); |
1912 | ||
1913 | if (ctx->split) { | |
1914 | FILE *chainf = fdopen_lock_file(&lk, "w"); | |
1915 | char *final_graph_name; | |
1916 | int result; | |
1917 | ||
1918 | close(fd); | |
1919 | ||
1920 | if (!chainf) { | |
1921 | error(_("unable to open commit-graph chain file")); | |
1922 | return -1; | |
1923 | } | |
1924 | ||
1925 | if (ctx->base_graph_name) { | |
8a6ac287 TB |
1926 | const char *dest; |
1927 | int idx = ctx->num_commit_graphs_after - 1; | |
1928 | if (ctx->num_commit_graphs_after > 1) | |
1929 | idx--; | |
1930 | ||
1931 | dest = ctx->commit_graph_filenames_after[idx]; | |
6c622f9f | 1932 | |
135a7123 DS |
1933 | if (strcmp(ctx->base_graph_name, dest)) { |
1934 | result = rename(ctx->base_graph_name, dest); | |
1935 | ||
1936 | if (result) { | |
1937 | error(_("failed to rename base commit-graph file")); | |
1938 | return -1; | |
1939 | } | |
6c622f9f DS |
1940 | } |
1941 | } else { | |
ad2dd5bb | 1942 | char *graph_name = get_commit_graph_filename(ctx->odb); |
6c622f9f DS |
1943 | unlink(graph_name); |
1944 | } | |
1945 | ||
1946 | ctx->commit_graph_hash_after[ctx->num_commit_graphs_after - 1] = xstrdup(oid_to_hex(&file_hash)); | |
ad2dd5bb | 1947 | final_graph_name = get_split_graph_filename(ctx->odb, |
6c622f9f DS |
1948 | ctx->commit_graph_hash_after[ctx->num_commit_graphs_after - 1]); |
1949 | ctx->commit_graph_filenames_after[ctx->num_commit_graphs_after - 1] = final_graph_name; | |
1950 | ||
1951 | result = rename(ctx->graph_name, final_graph_name); | |
1952 | ||
1953 | for (i = 0; i < ctx->num_commit_graphs_after; i++) | |
1954 | fprintf(lk.tempfile->fp, "%s\n", ctx->commit_graph_hash_after[i]); | |
1955 | ||
1956 | if (result) { | |
1957 | error(_("failed to rename temporary commit-graph file")); | |
1958 | return -1; | |
1959 | } | |
1960 | } | |
1961 | ||
08fd81c9 DS |
1962 | commit_lock_file(&lk); |
1963 | ||
238def57 DS |
1964 | return 0; |
1965 | } | |
1966 | ||
1771be90 DS |
1967 | static void split_graph_merge_strategy(struct write_commit_graph_context *ctx) |
1968 | { | |
8da02ce6 AH |
1969 | struct commit_graph *g; |
1970 | uint32_t num_commits; | |
fdbde82f | 1971 | enum commit_graph_split_flags flags = COMMIT_GRAPH_SPLIT_UNSPECIFIED; |
1771be90 DS |
1972 | uint32_t i; |
1973 | ||
c2bc6e6a DS |
1974 | int max_commits = 0; |
1975 | int size_mult = 2; | |
1976 | ||
98bb7961 TB |
1977 | if (ctx->opts) { |
1978 | max_commits = ctx->opts->max_commits; | |
63020f17 | 1979 | |
98bb7961 TB |
1980 | if (ctx->opts->size_multiple) |
1981 | size_mult = ctx->opts->size_multiple; | |
fdbde82f | 1982 | |
98bb7961 | 1983 | flags = ctx->opts->split_flags; |
c2bc6e6a DS |
1984 | } |
1985 | ||
1771be90 | 1986 | g = ctx->r->objects->commit_graph; |
8da02ce6 | 1987 | num_commits = ctx->commits.nr; |
8a6ac287 TB |
1988 | if (flags == COMMIT_GRAPH_SPLIT_REPLACE) |
1989 | ctx->num_commit_graphs_after = 1; | |
1990 | else | |
1991 | ctx->num_commit_graphs_after = ctx->num_commit_graphs_before + 1; | |
1771be90 | 1992 | |
8a6ac287 TB |
1993 | if (flags != COMMIT_GRAPH_SPLIT_MERGE_PROHIBITED && |
1994 | flags != COMMIT_GRAPH_SPLIT_REPLACE) { | |
fdbde82f TB |
1995 | while (g && (g->num_commits <= size_mult * num_commits || |
1996 | (max_commits && num_commits > max_commits))) { | |
1997 | if (g->odb != ctx->odb) | |
1998 | break; | |
c523035c | 1999 | |
fdbde82f TB |
2000 | num_commits += g->num_commits; |
2001 | g = g->base_graph; | |
1771be90 | 2002 | |
fdbde82f TB |
2003 | ctx->num_commit_graphs_after--; |
2004 | } | |
1771be90 DS |
2005 | } |
2006 | ||
8a6ac287 TB |
2007 | if (flags != COMMIT_GRAPH_SPLIT_REPLACE) |
2008 | ctx->new_base_graph = g; | |
2009 | else if (ctx->num_commit_graphs_after != 1) | |
2010 | BUG("split_graph_merge_strategy: num_commit_graphs_after " | |
2011 | "should be 1 with --split=replace"); | |
1771be90 | 2012 | |
c523035c | 2013 | if (ctx->num_commit_graphs_after == 2) { |
ad2dd5bb | 2014 | char *old_graph_name = get_commit_graph_filename(g->odb); |
c523035c DS |
2015 | |
2016 | if (!strcmp(g->filename, old_graph_name) && | |
ad2dd5bb | 2017 | g->odb != ctx->odb) { |
c523035c DS |
2018 | ctx->num_commit_graphs_after = 1; |
2019 | ctx->new_base_graph = NULL; | |
2020 | } | |
2021 | ||
2022 | free(old_graph_name); | |
2023 | } | |
2024 | ||
b78a556a TB |
2025 | CALLOC_ARRAY(ctx->commit_graph_filenames_after, ctx->num_commit_graphs_after); |
2026 | CALLOC_ARRAY(ctx->commit_graph_hash_after, ctx->num_commit_graphs_after); | |
1771be90 DS |
2027 | |
2028 | for (i = 0; i < ctx->num_commit_graphs_after && | |
2029 | i < ctx->num_commit_graphs_before; i++) | |
2030 | ctx->commit_graph_filenames_after[i] = xstrdup(ctx->commit_graph_filenames_before[i]); | |
2031 | ||
2032 | i = ctx->num_commit_graphs_before - 1; | |
2033 | g = ctx->r->objects->commit_graph; | |
2034 | ||
2035 | while (g) { | |
2036 | if (i < ctx->num_commit_graphs_after) | |
2037 | ctx->commit_graph_hash_after[i] = xstrdup(oid_to_hex(&g->oid)); | |
2038 | ||
1fdc383c AK |
2039 | /* |
2040 | * If the topmost remaining layer has generation data chunk, the | |
2041 | * resultant layer also has generation data chunk. | |
2042 | */ | |
2043 | if (i == ctx->num_commit_graphs_after - 2) | |
2044 | ctx->write_generation_data = !!g->chunk_generation_data; | |
2045 | ||
1771be90 DS |
2046 | i--; |
2047 | g = g->base_graph; | |
2048 | } | |
2049 | } | |
2050 | ||
2051 | static void merge_commit_graph(struct write_commit_graph_context *ctx, | |
2052 | struct commit_graph *g) | |
2053 | { | |
2054 | uint32_t i; | |
2055 | uint32_t offset = g->num_commits_in_base; | |
2056 | ||
2057 | ALLOC_GROW(ctx->commits.list, ctx->commits.nr + g->num_commits, ctx->commits.alloc); | |
2058 | ||
2059 | for (i = 0; i < g->num_commits; i++) { | |
2060 | struct object_id oid; | |
2061 | struct commit *result; | |
2062 | ||
2063 | display_progress(ctx->progress, i + 1); | |
2064 | ||
2065 | load_oid_from_graph(g, i + offset, &oid); | |
2066 | ||
2067 | /* only add commits if they still exist in the repo */ | |
2068 | result = lookup_commit_reference_gently(ctx->r, &oid, 1); | |
2069 | ||
2070 | if (result) { | |
2071 | ctx->commits.list[ctx->commits.nr] = result; | |
2072 | ctx->commits.nr++; | |
2073 | } | |
2074 | } | |
2075 | } | |
2076 | ||
2077 | static int commit_compare(const void *_a, const void *_b) | |
2078 | { | |
2079 | const struct commit *a = *(const struct commit **)_a; | |
2080 | const struct commit *b = *(const struct commit **)_b; | |
2081 | return oidcmp(&a->object.oid, &b->object.oid); | |
2082 | } | |
2083 | ||
2084 | static void sort_and_scan_merged_commits(struct write_commit_graph_context *ctx) | |
2085 | { | |
150f1157 | 2086 | uint32_t i, dedup_i = 0; |
1771be90 DS |
2087 | |
2088 | if (ctx->report_progress) | |
2089 | ctx->progress = start_delayed_progress( | |
2090 | _("Scanning merged commits"), | |
2091 | ctx->commits.nr); | |
2092 | ||
2093 | QSORT(ctx->commits.list, ctx->commits.nr, commit_compare); | |
2094 | ||
2095 | ctx->num_extra_edges = 0; | |
2096 | for (i = 0; i < ctx->commits.nr; i++) { | |
2097 | display_progress(ctx->progress, i); | |
2098 | ||
2099 | if (i && oideq(&ctx->commits.list[i - 1]->object.oid, | |
2100 | &ctx->commits.list[i]->object.oid)) { | |
150f1157 DS |
2101 | /* |
2102 | * Silently ignore duplicates. These were likely | |
2103 | * created due to a commit appearing in multiple | |
2104 | * layers of the chain, which is unexpected but | |
2105 | * not invalid. We should make sure there is a | |
2106 | * unique copy in the new layer. | |
2107 | */ | |
1771be90 | 2108 | } else { |
689a146c | 2109 | unsigned int num_parents; |
1771be90 | 2110 | |
150f1157 DS |
2111 | ctx->commits.list[dedup_i] = ctx->commits.list[i]; |
2112 | dedup_i++; | |
2113 | ||
689a146c | 2114 | num_parents = commit_list_count(ctx->commits.list[i]->parents); |
1771be90 | 2115 | if (num_parents > 2) |
a35bea40 | 2116 | ctx->num_extra_edges += num_parents - 1; |
1771be90 DS |
2117 | } |
2118 | } | |
2119 | ||
150f1157 DS |
2120 | ctx->commits.nr = dedup_i; |
2121 | ||
1771be90 DS |
2122 | stop_progress(&ctx->progress); |
2123 | } | |
2124 | ||
2125 | static void merge_commit_graphs(struct write_commit_graph_context *ctx) | |
2126 | { | |
2127 | struct commit_graph *g = ctx->r->objects->commit_graph; | |
2128 | uint32_t current_graph_number = ctx->num_commit_graphs_before; | |
1771be90 DS |
2129 | |
2130 | while (g && current_graph_number >= ctx->num_commit_graphs_after) { | |
2131 | current_graph_number--; | |
2132 | ||
d68ce906 RS |
2133 | if (ctx->report_progress) |
2134 | ctx->progress = start_delayed_progress(_("Merging commit-graph"), 0); | |
1771be90 DS |
2135 | |
2136 | merge_commit_graph(ctx, g); | |
2137 | stop_progress(&ctx->progress); | |
1771be90 DS |
2138 | |
2139 | g = g->base_graph; | |
2140 | } | |
2141 | ||
2142 | if (g) { | |
2143 | ctx->new_base_graph = g; | |
2144 | ctx->new_num_commits_in_base = g->num_commits + g->num_commits_in_base; | |
2145 | } | |
2146 | ||
2147 | if (ctx->new_base_graph) | |
2148 | ctx->base_graph_name = xstrdup(ctx->new_base_graph->filename); | |
2149 | ||
2150 | sort_and_scan_merged_commits(ctx); | |
2151 | } | |
2152 | ||
8d84097f DS |
2153 | static void mark_commit_graphs(struct write_commit_graph_context *ctx) |
2154 | { | |
2155 | uint32_t i; | |
2156 | time_t now = time(NULL); | |
2157 | ||
2158 | for (i = ctx->num_commit_graphs_after - 1; i < ctx->num_commit_graphs_before; i++) { | |
2159 | struct stat st; | |
2160 | struct utimbuf updated_time; | |
2161 | ||
2162 | stat(ctx->commit_graph_filenames_before[i], &st); | |
2163 | ||
2164 | updated_time.actime = st.st_atime; | |
2165 | updated_time.modtime = now; | |
2166 | utime(ctx->commit_graph_filenames_before[i], &updated_time); | |
2167 | } | |
2168 | } | |
2169 | ||
2170 | static void expire_commit_graphs(struct write_commit_graph_context *ctx) | |
2171 | { | |
2172 | struct strbuf path = STRBUF_INIT; | |
2173 | DIR *dir; | |
2174 | struct dirent *de; | |
2175 | size_t dirnamelen; | |
c2bc6e6a DS |
2176 | timestamp_t expire_time = time(NULL); |
2177 | ||
98bb7961 TB |
2178 | if (ctx->opts && ctx->opts->expire_time) |
2179 | expire_time = ctx->opts->expire_time; | |
ba41112a | 2180 | if (!ctx->split) { |
663b2b1b | 2181 | char *chain_file_name = get_commit_graph_chain_filename(ctx->odb); |
ba41112a DS |
2182 | unlink(chain_file_name); |
2183 | free(chain_file_name); | |
2184 | ctx->num_commit_graphs_after = 0; | |
2185 | } | |
8d84097f | 2186 | |
0bd52e27 | 2187 | strbuf_addstr(&path, ctx->odb->path); |
8d84097f DS |
2188 | strbuf_addstr(&path, "/info/commit-graphs"); |
2189 | dir = opendir(path.buf); | |
2190 | ||
0aa6bce7 RS |
2191 | if (!dir) |
2192 | goto out; | |
8d84097f DS |
2193 | |
2194 | strbuf_addch(&path, '/'); | |
2195 | dirnamelen = path.len; | |
2196 | while ((de = readdir(dir)) != NULL) { | |
2197 | struct stat st; | |
2198 | uint32_t i, found = 0; | |
2199 | ||
2200 | strbuf_setlen(&path, dirnamelen); | |
2201 | strbuf_addstr(&path, de->d_name); | |
2202 | ||
2203 | stat(path.buf, &st); | |
2204 | ||
2205 | if (st.st_mtime > expire_time) | |
2206 | continue; | |
2207 | if (path.len < 6 || strcmp(path.buf + path.len - 6, ".graph")) | |
2208 | continue; | |
2209 | ||
2210 | for (i = 0; i < ctx->num_commit_graphs_after; i++) { | |
2211 | if (!strcmp(ctx->commit_graph_filenames_after[i], | |
2212 | path.buf)) { | |
2213 | found = 1; | |
2214 | break; | |
2215 | } | |
2216 | } | |
2217 | ||
2218 | if (!found) | |
2219 | unlink(path.buf); | |
8d84097f | 2220 | } |
0aa6bce7 RS |
2221 | |
2222 | out: | |
2223 | strbuf_release(&path); | |
8d84097f DS |
2224 | } |
2225 | ||
0bd52e27 | 2226 | int write_commit_graph(struct object_directory *odb, |
238def57 | 2227 | struct string_list *pack_indexes, |
6830c360 | 2228 | struct oidset *commits, |
39d88318 | 2229 | enum commit_graph_write_flags flags, |
98bb7961 | 2230 | const struct commit_graph_opts *opts) |
238def57 DS |
2231 | { |
2232 | struct write_commit_graph_context *ctx; | |
1cbdbf3b | 2233 | uint32_t i; |
e103f727 | 2234 | int res = 0; |
8a6ac287 | 2235 | int replace = 0; |
9a7a9ed1 | 2236 | struct bloom_filter_settings bloom_settings = DEFAULT_BLOOM_FILTER_SETTINGS; |
72a2bfca | 2237 | struct topo_level_slab topo_levels; |
08fd81c9 | 2238 | |
85102ac7 DS |
2239 | prepare_repo_settings(the_repository); |
2240 | if (!the_repository->settings.core_commit_graph) { | |
2241 | warning(_("attempting to write a commit-graph, but 'core.commitGraph' is disabled")); | |
2242 | return 0; | |
2243 | } | |
d6538246 | 2244 | if (!commit_graph_compatible(the_repository)) |
e103f727 | 2245 | return 0; |
d6538246 | 2246 | |
c9905bea DS |
2247 | ctx = xcalloc(1, sizeof(struct write_commit_graph_context)); |
2248 | ctx->r = the_repository; | |
0bd52e27 | 2249 | ctx->odb = odb; |
39d88318 SG |
2250 | ctx->append = flags & COMMIT_GRAPH_WRITE_APPEND ? 1 : 0; |
2251 | ctx->report_progress = flags & COMMIT_GRAPH_WRITE_PROGRESS ? 1 : 0; | |
2252 | ctx->split = flags & COMMIT_GRAPH_WRITE_SPLIT ? 1 : 0; | |
98bb7961 | 2253 | ctx->opts = opts; |
f97b9325 | 2254 | ctx->total_bloom_filter_data_size = 0; |
e8b63005 AK |
2255 | ctx->write_generation_data = 1; |
2256 | ctx->num_generation_data_overflows = 0; | |
6c622f9f | 2257 | |
9a7a9ed1 TB |
2258 | bloom_settings.bits_per_entry = git_env_ulong("GIT_TEST_BLOOM_SETTINGS_BITS_PER_ENTRY", |
2259 | bloom_settings.bits_per_entry); | |
2260 | bloom_settings.num_hashes = git_env_ulong("GIT_TEST_BLOOM_SETTINGS_NUM_HASHES", | |
2261 | bloom_settings.num_hashes); | |
2262 | bloom_settings.max_changed_paths = git_env_ulong("GIT_TEST_BLOOM_SETTINGS_MAX_CHANGED_PATHS", | |
2263 | bloom_settings.max_changed_paths); | |
2264 | ctx->bloom_settings = &bloom_settings; | |
2265 | ||
72a2bfca AK |
2266 | init_topo_level_slab(&topo_levels); |
2267 | ctx->topo_levels = &topo_levels; | |
2268 | ||
2269 | if (ctx->r->objects->commit_graph) { | |
2270 | struct commit_graph *g = ctx->r->objects->commit_graph; | |
2271 | ||
2272 | while (g) { | |
2273 | g->topo_levels = &topo_levels; | |
2274 | g = g->base_graph; | |
2275 | } | |
2276 | } | |
2277 | ||
0087a87b DS |
2278 | if (flags & COMMIT_GRAPH_WRITE_BLOOM_FILTERS) |
2279 | ctx->changed_paths = 1; | |
2280 | if (!(flags & COMMIT_GRAPH_NO_WRITE_BLOOM_FILTERS)) { | |
2281 | struct commit_graph *g; | |
2282 | prepare_commit_graph_one(ctx->r, ctx->odb); | |
2283 | ||
2284 | g = ctx->r->objects->commit_graph; | |
2285 | ||
2286 | /* We have changed-paths already. Keep them in the next graph */ | |
2287 | if (g && g->chunk_bloom_data) { | |
2288 | ctx->changed_paths = 1; | |
2289 | ctx->bloom_settings = g->bloom_filter_settings; | |
2290 | } | |
2291 | } | |
2292 | ||
6c622f9f DS |
2293 | if (ctx->split) { |
2294 | struct commit_graph *g; | |
2295 | prepare_commit_graph(ctx->r); | |
2296 | ||
2297 | g = ctx->r->objects->commit_graph; | |
2298 | ||
2299 | while (g) { | |
2300 | ctx->num_commit_graphs_before++; | |
2301 | g = g->base_graph; | |
2302 | } | |
2303 | ||
2304 | if (ctx->num_commit_graphs_before) { | |
2305 | ALLOC_ARRAY(ctx->commit_graph_filenames_before, ctx->num_commit_graphs_before); | |
2306 | i = ctx->num_commit_graphs_before; | |
2307 | g = ctx->r->objects->commit_graph; | |
2308 | ||
2309 | while (g) { | |
2310 | ctx->commit_graph_filenames_before[--i] = xstrdup(g->filename); | |
2311 | g = g->base_graph; | |
2312 | } | |
2313 | } | |
8a6ac287 | 2314 | |
98bb7961 TB |
2315 | if (ctx->opts) |
2316 | replace = ctx->opts->split_flags & COMMIT_GRAPH_SPLIT_REPLACE; | |
6c622f9f | 2317 | } |
c9905bea DS |
2318 | |
2319 | ctx->approx_nr_objects = approximate_object_count(); | |
c9905bea | 2320 | |
a5f1c448 | 2321 | if (ctx->append) |
13c24992 | 2322 | prepare_commit_graph_one(ctx->r, ctx->odb); |
c9905bea DS |
2323 | |
2324 | if (ctx->append && ctx->r->objects->commit_graph) { | |
2325 | struct commit_graph *g = ctx->r->objects->commit_graph; | |
2326 | for (i = 0; i < g->num_commits; i++) { | |
a5f1c448 JK |
2327 | struct object_id oid; |
2328 | hashcpy(oid.hash, g->chunk_oid_lookup + g->hash_len * i); | |
2329 | oid_array_append(&ctx->oids, &oid); | |
7547b95b DS |
2330 | } |
2331 | } | |
2332 | ||
049d51a2 | 2333 | if (pack_indexes) { |
3d112755 | 2334 | ctx->order_by_pack = 1; |
ef5b83f2 DS |
2335 | if ((res = fill_oids_from_packs(ctx, pack_indexes))) |
2336 | goto cleanup; | |
3d5df01b DS |
2337 | } |
2338 | ||
6830c360 TB |
2339 | if (commits) { |
2340 | if ((res = fill_oids_from_commits(ctx, commits))) | |
7c5c9b9c SG |
2341 | goto cleanup; |
2342 | } | |
3d5df01b | 2343 | |
9b6606f4 | 2344 | if (!pack_indexes && !commits) { |
3d112755 | 2345 | ctx->order_by_pack = 1; |
b2c83060 | 2346 | fill_oids_from_all_packs(ctx); |
3d112755 | 2347 | } |
049d51a2 | 2348 | |
c9905bea | 2349 | close_reachable(ctx); |
08fd81c9 | 2350 | |
f998d542 | 2351 | copy_oids_to_commits(ctx); |
08fd81c9 | 2352 | |
c9905bea | 2353 | if (ctx->commits.nr >= GRAPH_EDGE_LAST_MASK) { |
e103f727 DS |
2354 | error(_("too many commits to write graph")); |
2355 | res = -1; | |
2356 | goto cleanup; | |
2357 | } | |
08fd81c9 | 2358 | |
8a6ac287 | 2359 | if (!ctx->commits.nr && !replace) |
6c622f9f DS |
2360 | goto cleanup; |
2361 | ||
1771be90 DS |
2362 | if (ctx->split) { |
2363 | split_graph_merge_strategy(ctx); | |
2364 | ||
8a6ac287 TB |
2365 | if (!replace) |
2366 | merge_commit_graphs(ctx); | |
1771be90 | 2367 | } else |
6c622f9f DS |
2368 | ctx->num_commit_graphs_after = 1; |
2369 | ||
1fdc383c AK |
2370 | validate_mixed_generation_chain(ctx->r->objects->commit_graph); |
2371 | ||
c9905bea | 2372 | compute_generation_numbers(ctx); |
08fd81c9 | 2373 | |
f97b9325 GS |
2374 | if (ctx->changed_paths) |
2375 | compute_bloom_filters(ctx); | |
2376 | ||
238def57 | 2377 | res = write_commit_graph_file(ctx); |
08fd81c9 | 2378 | |
ba41112a | 2379 | if (ctx->split) |
8d84097f | 2380 | mark_commit_graphs(ctx); |
ba41112a DS |
2381 | |
2382 | expire_commit_graphs(ctx); | |
8d84097f | 2383 | |
e103f727 | 2384 | cleanup: |
238def57 | 2385 | free(ctx->graph_name); |
c9905bea | 2386 | free(ctx->commits.list); |
a5f1c448 | 2387 | oid_array_clear(&ctx->oids); |
6c622f9f DS |
2388 | |
2389 | if (ctx->commit_graph_filenames_after) { | |
2390 | for (i = 0; i < ctx->num_commit_graphs_after; i++) { | |
2391 | free(ctx->commit_graph_filenames_after[i]); | |
2392 | free(ctx->commit_graph_hash_after[i]); | |
2393 | } | |
2394 | ||
2395 | for (i = 0; i < ctx->num_commit_graphs_before; i++) | |
2396 | free(ctx->commit_graph_filenames_before[i]); | |
2397 | ||
2398 | free(ctx->commit_graph_filenames_after); | |
2399 | free(ctx->commit_graph_filenames_before); | |
2400 | free(ctx->commit_graph_hash_after); | |
2401 | } | |
2402 | ||
c9905bea | 2403 | free(ctx); |
e103f727 DS |
2404 | |
2405 | return res; | |
08fd81c9 | 2406 | } |
283e68c7 | 2407 | |
41df0e30 | 2408 | #define VERIFY_COMMIT_GRAPH_ERROR_HASH 2 |
283e68c7 DS |
2409 | static int verify_commit_graph_error; |
2410 | ||
2411 | static void graph_report(const char *fmt, ...) | |
2412 | { | |
2413 | va_list ap; | |
2414 | ||
2415 | verify_commit_graph_error = 1; | |
2416 | va_start(ap, fmt); | |
2417 | vfprintf(stderr, fmt, ap); | |
2418 | fprintf(stderr, "\n"); | |
2419 | va_end(ap); | |
2420 | } | |
2421 | ||
1373e547 DS |
2422 | #define GENERATION_ZERO_EXISTS 1 |
2423 | #define GENERATION_NUMBER_EXISTS 2 | |
2424 | ||
3da4b609 | 2425 | int verify_commit_graph(struct repository *r, struct commit_graph *g, int flags) |
283e68c7 | 2426 | { |
9bda8467 | 2427 | uint32_t i, cur_fanout_pos = 0; |
41df0e30 | 2428 | struct object_id prev_oid, cur_oid, checksum; |
1373e547 | 2429 | int generation_zero = 0; |
41df0e30 DS |
2430 | struct hashfile *f; |
2431 | int devnull; | |
1f7f557f | 2432 | struct progress *progress = NULL; |
3da4b609 | 2433 | int local_error = 0; |
9bda8467 | 2434 | |
283e68c7 DS |
2435 | if (!g) { |
2436 | graph_report("no commit-graph file loaded"); | |
2437 | return 1; | |
2438 | } | |
2439 | ||
2ac138d5 | 2440 | verify_commit_graph_error = verify_commit_graph_lite(g); |
9bda8467 DS |
2441 | if (verify_commit_graph_error) |
2442 | return verify_commit_graph_error; | |
2443 | ||
41df0e30 DS |
2444 | devnull = open("/dev/null", O_WRONLY); |
2445 | f = hashfd(devnull, NULL); | |
2446 | hashwrite(f, g->data, g->data_len - g->hash_len); | |
2447 | finalize_hashfile(f, checksum.hash, CSUM_CLOSE); | |
67947c34 | 2448 | if (!hasheq(checksum.hash, g->data + g->data_len - g->hash_len)) { |
41df0e30 DS |
2449 | graph_report(_("the commit-graph file has incorrect checksum and is likely corrupt")); |
2450 | verify_commit_graph_error = VERIFY_COMMIT_GRAPH_ERROR_HASH; | |
2451 | } | |
2452 | ||
9bda8467 | 2453 | for (i = 0; i < g->num_commits; i++) { |
2e3c0737 DS |
2454 | struct commit *graph_commit; |
2455 | ||
9bda8467 DS |
2456 | hashcpy(cur_oid.hash, g->chunk_oid_lookup + g->hash_len * i); |
2457 | ||
2458 | if (i && oidcmp(&prev_oid, &cur_oid) >= 0) | |
93b4405f | 2459 | graph_report(_("commit-graph has incorrect OID order: %s then %s"), |
9bda8467 DS |
2460 | oid_to_hex(&prev_oid), |
2461 | oid_to_hex(&cur_oid)); | |
2462 | ||
2463 | oidcpy(&prev_oid, &cur_oid); | |
2464 | ||
2465 | while (cur_oid.hash[0] > cur_fanout_pos) { | |
2466 | uint32_t fanout_value = get_be32(g->chunk_oid_fanout + cur_fanout_pos); | |
2467 | ||
2468 | if (i != fanout_value) | |
93b4405f | 2469 | graph_report(_("commit-graph has incorrect fanout value: fanout[%d] = %u != %u"), |
9bda8467 DS |
2470 | cur_fanout_pos, fanout_value, i); |
2471 | cur_fanout_pos++; | |
2472 | } | |
2e3c0737 | 2473 | |
82952964 | 2474 | graph_commit = lookup_commit(r, &cur_oid); |
4f542b7a | 2475 | if (!parse_commit_in_graph_one(r, g, graph_commit)) |
93b4405f | 2476 | graph_report(_("failed to parse commit %s from commit-graph"), |
2e3c0737 | 2477 | oid_to_hex(&cur_oid)); |
9bda8467 DS |
2478 | } |
2479 | ||
2480 | while (cur_fanout_pos < 256) { | |
2481 | uint32_t fanout_value = get_be32(g->chunk_oid_fanout + cur_fanout_pos); | |
2482 | ||
2483 | if (g->num_commits != fanout_value) | |
93b4405f | 2484 | graph_report(_("commit-graph has incorrect fanout value: fanout[%d] = %u != %u"), |
9bda8467 DS |
2485 | cur_fanout_pos, fanout_value, i); |
2486 | ||
2487 | cur_fanout_pos++; | |
2488 | } | |
2489 | ||
41df0e30 | 2490 | if (verify_commit_graph_error & ~VERIFY_COMMIT_GRAPH_ERROR_HASH) |
96af91d4 DS |
2491 | return verify_commit_graph_error; |
2492 | ||
73716122 GS |
2493 | if (flags & COMMIT_GRAPH_WRITE_PROGRESS) |
2494 | progress = start_progress(_("Verifying commits in commit graph"), | |
2495 | g->num_commits); | |
2496 | ||
96af91d4 | 2497 | for (i = 0; i < g->num_commits; i++) { |
2e3c0737 | 2498 | struct commit *graph_commit, *odb_commit; |
53614b13 | 2499 | struct commit_list *graph_parents, *odb_parents; |
d7f92784 AK |
2500 | timestamp_t max_generation = 0; |
2501 | timestamp_t generation; | |
96af91d4 | 2502 | |
1f7f557f | 2503 | display_progress(progress, i + 1); |
96af91d4 DS |
2504 | hashcpy(cur_oid.hash, g->chunk_oid_lookup + g->hash_len * i); |
2505 | ||
82952964 | 2506 | graph_commit = lookup_commit(r, &cur_oid); |
a378509e | 2507 | odb_commit = (struct commit *)create_object(r, &cur_oid, alloc_commit_node(r)); |
96af91d4 | 2508 | if (parse_commit_internal(odb_commit, 0, 0)) { |
93b4405f | 2509 | graph_report(_("failed to parse commit %s from object database for commit-graph"), |
96af91d4 DS |
2510 | oid_to_hex(&cur_oid)); |
2511 | continue; | |
2512 | } | |
2e3c0737 | 2513 | |
4f542b7a | 2514 | if (!oideq(&get_commit_tree_in_graph_one(r, g, graph_commit)->object.oid, |
2e3c0737 | 2515 | get_commit_tree_oid(odb_commit))) |
93b4405f | 2516 | graph_report(_("root tree OID for commit %s in commit-graph is %s != %s"), |
2e3c0737 DS |
2517 | oid_to_hex(&cur_oid), |
2518 | oid_to_hex(get_commit_tree_oid(graph_commit)), | |
2519 | oid_to_hex(get_commit_tree_oid(odb_commit))); | |
53614b13 DS |
2520 | |
2521 | graph_parents = graph_commit->parents; | |
2522 | odb_parents = odb_commit->parents; | |
2523 | ||
2524 | while (graph_parents) { | |
2525 | if (odb_parents == NULL) { | |
93b4405f | 2526 | graph_report(_("commit-graph parent list for commit %s is too long"), |
53614b13 DS |
2527 | oid_to_hex(&cur_oid)); |
2528 | break; | |
2529 | } | |
2530 | ||
3da4b609 DS |
2531 | /* parse parent in case it is in a base graph */ |
2532 | parse_commit_in_graph_one(r, g, graph_parents->item); | |
2533 | ||
9001dc2a | 2534 | if (!oideq(&graph_parents->item->object.oid, &odb_parents->item->object.oid)) |
93b4405f | 2535 | graph_report(_("commit-graph parent for %s is %s != %s"), |
53614b13 DS |
2536 | oid_to_hex(&cur_oid), |
2537 | oid_to_hex(&graph_parents->item->object.oid), | |
2538 | oid_to_hex(&odb_parents->item->object.oid)); | |
2539 | ||
c752ad09 AK |
2540 | generation = commit_graph_generation(graph_parents->item); |
2541 | if (generation > max_generation) | |
2542 | max_generation = generation; | |
1373e547 | 2543 | |
53614b13 DS |
2544 | graph_parents = graph_parents->next; |
2545 | odb_parents = odb_parents->next; | |
2546 | } | |
2547 | ||
2548 | if (odb_parents != NULL) | |
93b4405f | 2549 | graph_report(_("commit-graph parent list for commit %s terminates early"), |
53614b13 | 2550 | oid_to_hex(&cur_oid)); |
1373e547 | 2551 | |
c49c82aa | 2552 | if (!commit_graph_generation(graph_commit)) { |
1373e547 | 2553 | if (generation_zero == GENERATION_NUMBER_EXISTS) |
93b4405f | 2554 | graph_report(_("commit-graph has generation number zero for commit %s, but non-zero elsewhere"), |
1373e547 DS |
2555 | oid_to_hex(&cur_oid)); |
2556 | generation_zero = GENERATION_ZERO_EXISTS; | |
2557 | } else if (generation_zero == GENERATION_ZERO_EXISTS) | |
93b4405f | 2558 | graph_report(_("commit-graph has non-zero generation number for commit %s, but zero elsewhere"), |
1373e547 DS |
2559 | oid_to_hex(&cur_oid)); |
2560 | ||
2561 | if (generation_zero == GENERATION_ZERO_EXISTS) | |
2562 | continue; | |
2563 | ||
2564 | /* | |
e8b63005 AK |
2565 | * If we are using topological level and one of our parents has |
2566 | * generation GENERATION_NUMBER_V1_MAX, then our generation is | |
2567 | * also GENERATION_NUMBER_V1_MAX. Decrement to avoid extra logic | |
2568 | * in the following condition. | |
1373e547 | 2569 | */ |
1fdc383c | 2570 | if (!g->read_generation_data && max_generation == GENERATION_NUMBER_V1_MAX) |
1373e547 DS |
2571 | max_generation--; |
2572 | ||
c752ad09 | 2573 | generation = commit_graph_generation(graph_commit); |
e8b63005 AK |
2574 | if (generation < max_generation + 1) |
2575 | graph_report(_("commit-graph generation for commit %s is %"PRItime" < %"PRItime), | |
1373e547 | 2576 | oid_to_hex(&cur_oid), |
c752ad09 | 2577 | generation, |
1373e547 | 2578 | max_generation + 1); |
88968ebf DS |
2579 | |
2580 | if (graph_commit->date != odb_commit->date) | |
93b4405f | 2581 | graph_report(_("commit date for commit %s in commit-graph is %"PRItime" != %"PRItime), |
88968ebf DS |
2582 | oid_to_hex(&cur_oid), |
2583 | graph_commit->date, | |
2584 | odb_commit->date); | |
96af91d4 | 2585 | } |
1f7f557f | 2586 | stop_progress(&progress); |
96af91d4 | 2587 | |
3da4b609 DS |
2588 | local_error = verify_commit_graph_error; |
2589 | ||
2590 | if (!(flags & COMMIT_GRAPH_VERIFY_SHALLOW) && g->base_graph) | |
2591 | local_error |= verify_commit_graph(r, g->base_graph, flags); | |
2592 | ||
2593 | return local_error; | |
283e68c7 | 2594 | } |
c3756d5b JT |
2595 | |
2596 | void free_commit_graph(struct commit_graph *g) | |
2597 | { | |
2598 | if (!g) | |
2599 | return; | |
c8828530 | 2600 | if (g->data) { |
c3756d5b JT |
2601 | munmap((void *)g->data, g->data_len); |
2602 | g->data = NULL; | |
c3756d5b | 2603 | } |
6c622f9f | 2604 | free(g->filename); |
76ffbca7 | 2605 | free(g->bloom_filter_settings); |
c3756d5b JT |
2606 | free(g); |
2607 | } | |
6abada18 JK |
2608 | |
2609 | void disable_commit_graph(struct repository *r) | |
2610 | { | |
2611 | r->commit_graph_disabled = 1; | |
2612 | } |