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Commit | Line | Data |
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5227c385 | 1 | #include "cache.h" |
5227c385 | 2 | #include "commit.h" |
920f93ca | 3 | #include "commit-graph.h" |
1d614d41 DS |
4 | #include "decorate.h" |
5 | #include "prio-queue.h" | |
6 | #include "tree.h" | |
6621c838 | 7 | #include "ref-filter.h" |
1d614d41 DS |
8 | #include "revision.h" |
9 | #include "tag.h" | |
5227c385 DS |
10 | #include "commit-reach.h" |
11 | ||
12 | /* Remember to update object flag allocation in object.h */ | |
ba3ca1ed | 13 | #define REACHABLE (1u<<15) |
5227c385 DS |
14 | #define PARENT1 (1u<<16) |
15 | #define PARENT2 (1u<<17) | |
16 | #define STALE (1u<<18) | |
17 | #define RESULT (1u<<19) | |
18 | ||
19 | static const unsigned all_flags = (PARENT1 | PARENT2 | STALE | RESULT); | |
20 | ||
21 | static int queue_has_nonstale(struct prio_queue *queue) | |
22 | { | |
23 | int i; | |
24 | for (i = 0; i < queue->nr; i++) { | |
25 | struct commit *commit = queue->array[i].data; | |
26 | if (!(commit->object.flags & STALE)) | |
27 | return 1; | |
28 | } | |
29 | return 0; | |
30 | } | |
31 | ||
32 | /* all input commits in one and twos[] must have been parsed! */ | |
c383830a SB |
33 | static struct commit_list *paint_down_to_common(struct repository *r, |
34 | struct commit *one, int n, | |
5227c385 DS |
35 | struct commit **twos, |
36 | int min_generation) | |
37 | { | |
38 | struct prio_queue queue = { compare_commits_by_gen_then_commit_date }; | |
39 | struct commit_list *result = NULL; | |
40 | int i; | |
41 | uint32_t last_gen = GENERATION_NUMBER_INFINITY; | |
42 | ||
1b7a91da JH |
43 | if (!min_generation) |
44 | queue.compare = compare_commits_by_commit_date; | |
45 | ||
5227c385 DS |
46 | one->object.flags |= PARENT1; |
47 | if (!n) { | |
48 | commit_list_append(one, &result); | |
49 | return result; | |
50 | } | |
51 | prio_queue_put(&queue, one); | |
52 | ||
53 | for (i = 0; i < n; i++) { | |
54 | twos[i]->object.flags |= PARENT2; | |
55 | prio_queue_put(&queue, twos[i]); | |
56 | } | |
57 | ||
58 | while (queue_has_nonstale(&queue)) { | |
59 | struct commit *commit = prio_queue_get(&queue); | |
60 | struct commit_list *parents; | |
61 | int flags; | |
62 | ||
1b7a91da | 63 | if (min_generation && commit->generation > last_gen) |
5227c385 DS |
64 | BUG("bad generation skip %8x > %8x at %s", |
65 | commit->generation, last_gen, | |
66 | oid_to_hex(&commit->object.oid)); | |
67 | last_gen = commit->generation; | |
68 | ||
69 | if (commit->generation < min_generation) | |
70 | break; | |
71 | ||
72 | flags = commit->object.flags & (PARENT1 | PARENT2 | STALE); | |
73 | if (flags == (PARENT1 | PARENT2)) { | |
74 | if (!(commit->object.flags & RESULT)) { | |
75 | commit->object.flags |= RESULT; | |
76 | commit_list_insert_by_date(commit, &result); | |
77 | } | |
78 | /* Mark parents of a found merge stale */ | |
79 | flags |= STALE; | |
80 | } | |
81 | parents = commit->parents; | |
82 | while (parents) { | |
83 | struct commit *p = parents->item; | |
84 | parents = parents->next; | |
85 | if ((p->object.flags & flags) == flags) | |
86 | continue; | |
c383830a | 87 | if (repo_parse_commit(r, p)) |
5227c385 DS |
88 | return NULL; |
89 | p->object.flags |= flags; | |
90 | prio_queue_put(&queue, p); | |
91 | } | |
92 | } | |
93 | ||
94 | clear_prio_queue(&queue); | |
95 | return result; | |
96 | } | |
97 | ||
18256a91 SB |
98 | static struct commit_list *merge_bases_many(struct repository *r, |
99 | struct commit *one, int n, | |
100 | struct commit **twos) | |
5227c385 DS |
101 | { |
102 | struct commit_list *list = NULL; | |
103 | struct commit_list *result = NULL; | |
104 | int i; | |
105 | ||
106 | for (i = 0; i < n; i++) { | |
107 | if (one == twos[i]) | |
108 | /* | |
109 | * We do not mark this even with RESULT so we do not | |
110 | * have to clean it up. | |
111 | */ | |
112 | return commit_list_insert(one, &result); | |
113 | } | |
114 | ||
18256a91 | 115 | if (repo_parse_commit(r, one)) |
5227c385 DS |
116 | return NULL; |
117 | for (i = 0; i < n; i++) { | |
18256a91 | 118 | if (repo_parse_commit(r, twos[i])) |
5227c385 DS |
119 | return NULL; |
120 | } | |
121 | ||
18256a91 | 122 | list = paint_down_to_common(r, one, n, twos, 0); |
5227c385 DS |
123 | |
124 | while (list) { | |
125 | struct commit *commit = pop_commit(&list); | |
126 | if (!(commit->object.flags & STALE)) | |
127 | commit_list_insert_by_date(commit, &result); | |
128 | } | |
129 | return result; | |
130 | } | |
131 | ||
132 | struct commit_list *get_octopus_merge_bases(struct commit_list *in) | |
133 | { | |
134 | struct commit_list *i, *j, *k, *ret = NULL; | |
135 | ||
136 | if (!in) | |
137 | return ret; | |
138 | ||
139 | commit_list_insert(in->item, &ret); | |
140 | ||
141 | for (i = in->next; i; i = i->next) { | |
142 | struct commit_list *new_commits = NULL, *end = NULL; | |
143 | ||
144 | for (j = ret; j; j = j->next) { | |
145 | struct commit_list *bases; | |
146 | bases = get_merge_bases(i->item, j->item); | |
147 | if (!new_commits) | |
148 | new_commits = bases; | |
149 | else | |
150 | end->next = bases; | |
151 | for (k = bases; k; k = k->next) | |
152 | end = k; | |
153 | } | |
154 | ret = new_commits; | |
155 | } | |
156 | return ret; | |
157 | } | |
158 | ||
ed8a0e3a | 159 | static int remove_redundant(struct repository *r, struct commit **array, int cnt) |
5227c385 DS |
160 | { |
161 | /* | |
162 | * Some commit in the array may be an ancestor of | |
163 | * another commit. Move such commit to the end of | |
164 | * the array, and return the number of commits that | |
165 | * are independent from each other. | |
166 | */ | |
167 | struct commit **work; | |
168 | unsigned char *redundant; | |
169 | int *filled_index; | |
170 | int i, j, filled; | |
171 | ||
172 | work = xcalloc(cnt, sizeof(*work)); | |
173 | redundant = xcalloc(cnt, 1); | |
174 | ALLOC_ARRAY(filled_index, cnt - 1); | |
175 | ||
176 | for (i = 0; i < cnt; i++) | |
ed8a0e3a | 177 | repo_parse_commit(r, array[i]); |
5227c385 DS |
178 | for (i = 0; i < cnt; i++) { |
179 | struct commit_list *common; | |
180 | uint32_t min_generation = array[i]->generation; | |
181 | ||
182 | if (redundant[i]) | |
183 | continue; | |
184 | for (j = filled = 0; j < cnt; j++) { | |
185 | if (i == j || redundant[j]) | |
186 | continue; | |
187 | filled_index[filled] = j; | |
188 | work[filled++] = array[j]; | |
189 | ||
190 | if (array[j]->generation < min_generation) | |
191 | min_generation = array[j]->generation; | |
192 | } | |
ed8a0e3a | 193 | common = paint_down_to_common(r, array[i], filled, |
c383830a | 194 | work, min_generation); |
5227c385 DS |
195 | if (array[i]->object.flags & PARENT2) |
196 | redundant[i] = 1; | |
197 | for (j = 0; j < filled; j++) | |
198 | if (work[j]->object.flags & PARENT1) | |
199 | redundant[filled_index[j]] = 1; | |
200 | clear_commit_marks(array[i], all_flags); | |
201 | clear_commit_marks_many(filled, work, all_flags); | |
202 | free_commit_list(common); | |
203 | } | |
204 | ||
205 | /* Now collect the result */ | |
206 | COPY_ARRAY(work, array, cnt); | |
207 | for (i = filled = 0; i < cnt; i++) | |
208 | if (!redundant[i]) | |
209 | array[filled++] = work[i]; | |
210 | for (j = filled, i = 0; i < cnt; i++) | |
211 | if (redundant[i]) | |
212 | array[j++] = work[i]; | |
213 | free(work); | |
214 | free(redundant); | |
215 | free(filled_index); | |
216 | return filled; | |
217 | } | |
218 | ||
f28e87f5 SB |
219 | static struct commit_list *get_merge_bases_many_0(struct repository *r, |
220 | struct commit *one, | |
5227c385 DS |
221 | int n, |
222 | struct commit **twos, | |
223 | int cleanup) | |
224 | { | |
225 | struct commit_list *list; | |
226 | struct commit **rslt; | |
227 | struct commit_list *result; | |
228 | int cnt, i; | |
229 | ||
f28e87f5 | 230 | result = merge_bases_many(r, one, n, twos); |
5227c385 DS |
231 | for (i = 0; i < n; i++) { |
232 | if (one == twos[i]) | |
233 | return result; | |
234 | } | |
235 | if (!result || !result->next) { | |
236 | if (cleanup) { | |
237 | clear_commit_marks(one, all_flags); | |
238 | clear_commit_marks_many(n, twos, all_flags); | |
239 | } | |
240 | return result; | |
241 | } | |
242 | ||
243 | /* There are more than one */ | |
244 | cnt = commit_list_count(result); | |
245 | rslt = xcalloc(cnt, sizeof(*rslt)); | |
246 | for (list = result, i = 0; list; list = list->next) | |
247 | rslt[i++] = list->item; | |
248 | free_commit_list(result); | |
249 | ||
250 | clear_commit_marks(one, all_flags); | |
251 | clear_commit_marks_many(n, twos, all_flags); | |
252 | ||
f28e87f5 | 253 | cnt = remove_redundant(r, rslt, cnt); |
5227c385 DS |
254 | result = NULL; |
255 | for (i = 0; i < cnt; i++) | |
256 | commit_list_insert_by_date(rslt[i], &result); | |
257 | free(rslt); | |
258 | return result; | |
259 | } | |
260 | ||
261 | struct commit_list *get_merge_bases_many(struct commit *one, | |
262 | int n, | |
263 | struct commit **twos) | |
264 | { | |
f28e87f5 | 265 | return get_merge_bases_many_0(the_repository, one, n, twos, 1); |
5227c385 DS |
266 | } |
267 | ||
268 | struct commit_list *get_merge_bases_many_dirty(struct commit *one, | |
269 | int n, | |
270 | struct commit **twos) | |
271 | { | |
f28e87f5 | 272 | return get_merge_bases_many_0(the_repository, one, n, twos, 0); |
5227c385 DS |
273 | } |
274 | ||
275 | struct commit_list *get_merge_bases(struct commit *one, struct commit *two) | |
276 | { | |
f28e87f5 | 277 | return get_merge_bases_many_0(the_repository, one, 1, &two, 1); |
5227c385 DS |
278 | } |
279 | ||
280 | /* | |
281 | * Is "commit" a descendant of one of the elements on the "with_commit" list? | |
282 | */ | |
283 | int is_descendant_of(struct commit *commit, struct commit_list *with_commit) | |
284 | { | |
285 | if (!with_commit) | |
286 | return 1; | |
5227c385 | 287 | |
6cc01743 DS |
288 | if (generation_numbers_enabled(the_repository)) { |
289 | struct commit_list *from_list = NULL; | |
290 | int result; | |
291 | commit_list_insert(commit, &from_list); | |
292 | result = can_all_from_reach(from_list, with_commit, 0); | |
293 | free_commit_list(from_list); | |
294 | return result; | |
295 | } else { | |
296 | while (with_commit) { | |
297 | struct commit *other; | |
298 | ||
299 | other = with_commit->item; | |
300 | with_commit = with_commit->next; | |
301 | if (in_merge_bases(other, commit)) | |
302 | return 1; | |
303 | } | |
304 | return 0; | |
5227c385 | 305 | } |
5227c385 DS |
306 | } |
307 | ||
308 | /* | |
309 | * Is "commit" an ancestor of one of the "references"? | |
310 | */ | |
311 | int in_merge_bases_many(struct commit *commit, int nr_reference, struct commit **reference) | |
312 | { | |
313 | struct commit_list *bases; | |
314 | int ret = 0, i; | |
315 | uint32_t min_generation = GENERATION_NUMBER_INFINITY; | |
316 | ||
317 | if (parse_commit(commit)) | |
318 | return ret; | |
319 | for (i = 0; i < nr_reference; i++) { | |
320 | if (parse_commit(reference[i])) | |
321 | return ret; | |
322 | if (reference[i]->generation < min_generation) | |
323 | min_generation = reference[i]->generation; | |
324 | } | |
325 | ||
326 | if (commit->generation > min_generation) | |
327 | return ret; | |
328 | ||
c383830a SB |
329 | bases = paint_down_to_common(the_repository, commit, |
330 | nr_reference, reference, | |
331 | commit->generation); | |
5227c385 DS |
332 | if (commit->object.flags & PARENT2) |
333 | ret = 1; | |
334 | clear_commit_marks(commit, all_flags); | |
335 | clear_commit_marks_many(nr_reference, reference, all_flags); | |
336 | free_commit_list(bases); | |
337 | return ret; | |
338 | } | |
339 | ||
340 | /* | |
341 | * Is "commit" an ancestor of (i.e. reachable from) the "reference"? | |
342 | */ | |
343 | int in_merge_bases(struct commit *commit, struct commit *reference) | |
344 | { | |
345 | return in_merge_bases_many(commit, 1, &reference); | |
346 | } | |
347 | ||
348 | struct commit_list *reduce_heads(struct commit_list *heads) | |
349 | { | |
350 | struct commit_list *p; | |
351 | struct commit_list *result = NULL, **tail = &result; | |
352 | struct commit **array; | |
353 | int num_head, i; | |
354 | ||
355 | if (!heads) | |
356 | return NULL; | |
357 | ||
358 | /* Uniquify */ | |
359 | for (p = heads; p; p = p->next) | |
360 | p->item->object.flags &= ~STALE; | |
361 | for (p = heads, num_head = 0; p; p = p->next) { | |
362 | if (p->item->object.flags & STALE) | |
363 | continue; | |
364 | p->item->object.flags |= STALE; | |
365 | num_head++; | |
366 | } | |
367 | array = xcalloc(num_head, sizeof(*array)); | |
368 | for (p = heads, i = 0; p; p = p->next) { | |
369 | if (p->item->object.flags & STALE) { | |
370 | array[i++] = p->item; | |
371 | p->item->object.flags &= ~STALE; | |
372 | } | |
373 | } | |
ed8a0e3a | 374 | num_head = remove_redundant(the_repository, array, num_head); |
5227c385 DS |
375 | for (i = 0; i < num_head; i++) |
376 | tail = &commit_list_insert(array[i], tail)->next; | |
377 | free(array); | |
378 | return result; | |
379 | } | |
380 | ||
381 | void reduce_heads_replace(struct commit_list **heads) | |
382 | { | |
383 | struct commit_list *result = reduce_heads(*heads); | |
384 | free_commit_list(*heads); | |
385 | *heads = result; | |
386 | } | |
1d614d41 | 387 | |
1d614d41 DS |
388 | int ref_newer(const struct object_id *new_oid, const struct object_id *old_oid) |
389 | { | |
390 | struct object *o; | |
391 | struct commit *old_commit, *new_commit; | |
1e3497a2 | 392 | struct commit_list *old_commit_list = NULL; |
1d614d41 DS |
393 | |
394 | /* | |
395 | * Both new_commit and old_commit must be commit-ish and new_commit is descendant of | |
396 | * old_commit. Otherwise we require --force. | |
397 | */ | |
398 | o = deref_tag(the_repository, parse_object(the_repository, old_oid), | |
399 | NULL, 0); | |
400 | if (!o || o->type != OBJ_COMMIT) | |
401 | return 0; | |
402 | old_commit = (struct commit *) o; | |
403 | ||
404 | o = deref_tag(the_repository, parse_object(the_repository, new_oid), | |
405 | NULL, 0); | |
406 | if (!o || o->type != OBJ_COMMIT) | |
407 | return 0; | |
408 | new_commit = (struct commit *) o; | |
409 | ||
410 | if (parse_commit(new_commit) < 0) | |
411 | return 0; | |
412 | ||
1e3497a2 DS |
413 | commit_list_insert(old_commit, &old_commit_list); |
414 | return is_descendant_of(new_commit, old_commit_list); | |
1d614d41 | 415 | } |
920f93ca DS |
416 | |
417 | /* | |
418 | * Mimicking the real stack, this stack lives on the heap, avoiding stack | |
419 | * overflows. | |
420 | * | |
421 | * At each recursion step, the stack items points to the commits whose | |
422 | * ancestors are to be inspected. | |
423 | */ | |
424 | struct contains_stack { | |
425 | int nr, alloc; | |
426 | struct contains_stack_entry { | |
427 | struct commit *commit; | |
428 | struct commit_list *parents; | |
429 | } *contains_stack; | |
430 | }; | |
431 | ||
432 | static int in_commit_list(const struct commit_list *want, struct commit *c) | |
433 | { | |
434 | for (; want; want = want->next) | |
e43d2dcc | 435 | if (oideq(&want->item->object.oid, &c->object.oid)) |
920f93ca DS |
436 | return 1; |
437 | return 0; | |
438 | } | |
439 | ||
440 | /* | |
441 | * Test whether the candidate is contained in the list. | |
442 | * Do not recurse to find out, though, but return -1 if inconclusive. | |
443 | */ | |
444 | static enum contains_result contains_test(struct commit *candidate, | |
445 | const struct commit_list *want, | |
446 | struct contains_cache *cache, | |
447 | uint32_t cutoff) | |
448 | { | |
449 | enum contains_result *cached = contains_cache_at(cache, candidate); | |
450 | ||
451 | /* If we already have the answer cached, return that. */ | |
452 | if (*cached) | |
453 | return *cached; | |
454 | ||
455 | /* or are we it? */ | |
456 | if (in_commit_list(want, candidate)) { | |
457 | *cached = CONTAINS_YES; | |
458 | return CONTAINS_YES; | |
459 | } | |
460 | ||
461 | /* Otherwise, we don't know; prepare to recurse */ | |
462 | parse_commit_or_die(candidate); | |
463 | ||
464 | if (candidate->generation < cutoff) | |
465 | return CONTAINS_NO; | |
466 | ||
467 | return CONTAINS_UNKNOWN; | |
468 | } | |
469 | ||
470 | static void push_to_contains_stack(struct commit *candidate, struct contains_stack *contains_stack) | |
471 | { | |
472 | ALLOC_GROW(contains_stack->contains_stack, contains_stack->nr + 1, contains_stack->alloc); | |
473 | contains_stack->contains_stack[contains_stack->nr].commit = candidate; | |
474 | contains_stack->contains_stack[contains_stack->nr++].parents = candidate->parents; | |
475 | } | |
476 | ||
477 | static enum contains_result contains_tag_algo(struct commit *candidate, | |
478 | const struct commit_list *want, | |
479 | struct contains_cache *cache) | |
480 | { | |
481 | struct contains_stack contains_stack = { 0, 0, NULL }; | |
482 | enum contains_result result; | |
483 | uint32_t cutoff = GENERATION_NUMBER_INFINITY; | |
484 | const struct commit_list *p; | |
485 | ||
486 | for (p = want; p; p = p->next) { | |
487 | struct commit *c = p->item; | |
488 | load_commit_graph_info(the_repository, c); | |
489 | if (c->generation < cutoff) | |
490 | cutoff = c->generation; | |
491 | } | |
492 | ||
493 | result = contains_test(candidate, want, cache, cutoff); | |
494 | if (result != CONTAINS_UNKNOWN) | |
495 | return result; | |
496 | ||
497 | push_to_contains_stack(candidate, &contains_stack); | |
498 | while (contains_stack.nr) { | |
499 | struct contains_stack_entry *entry = &contains_stack.contains_stack[contains_stack.nr - 1]; | |
500 | struct commit *commit = entry->commit; | |
501 | struct commit_list *parents = entry->parents; | |
502 | ||
503 | if (!parents) { | |
504 | *contains_cache_at(cache, commit) = CONTAINS_NO; | |
505 | contains_stack.nr--; | |
506 | } | |
507 | /* | |
508 | * If we just popped the stack, parents->item has been marked, | |
509 | * therefore contains_test will return a meaningful yes/no. | |
510 | */ | |
511 | else switch (contains_test(parents->item, want, cache, cutoff)) { | |
512 | case CONTAINS_YES: | |
513 | *contains_cache_at(cache, commit) = CONTAINS_YES; | |
514 | contains_stack.nr--; | |
515 | break; | |
516 | case CONTAINS_NO: | |
517 | entry->parents = parents->next; | |
518 | break; | |
519 | case CONTAINS_UNKNOWN: | |
520 | push_to_contains_stack(parents->item, &contains_stack); | |
521 | break; | |
522 | } | |
523 | } | |
524 | free(contains_stack.contains_stack); | |
525 | return contains_test(candidate, want, cache, cutoff); | |
526 | } | |
527 | ||
528 | int commit_contains(struct ref_filter *filter, struct commit *commit, | |
529 | struct commit_list *list, struct contains_cache *cache) | |
530 | { | |
531 | if (filter->with_commit_tag_algo) | |
532 | return contains_tag_algo(commit, list, cache) == CONTAINS_YES; | |
533 | return is_descendant_of(commit, list); | |
534 | } | |
ba3ca1ed | 535 | |
4fbcca4e | 536 | static int compare_commits_by_gen(const void *_a, const void *_b) |
ba3ca1ed | 537 | { |
4fbcca4e DS |
538 | const struct commit *a = (const struct commit *)_a; |
539 | const struct commit *b = (const struct commit *)_b; | |
ba3ca1ed | 540 | |
4fbcca4e DS |
541 | if (a->generation < b->generation) |
542 | return -1; | |
543 | if (a->generation > b->generation) | |
544 | return 1; | |
545 | return 0; | |
ba3ca1ed DS |
546 | } |
547 | ||
548 | int can_all_from_reach_with_flag(struct object_array *from, | |
549 | unsigned int with_flag, | |
550 | unsigned int assign_flag, | |
4fbcca4e DS |
551 | time_t min_commit_date, |
552 | uint32_t min_generation) | |
ba3ca1ed | 553 | { |
4fbcca4e | 554 | struct commit **list = NULL; |
ba3ca1ed | 555 | int i; |
b67f6b26 | 556 | int nr_commits; |
4fbcca4e | 557 | int result = 1; |
ba3ca1ed | 558 | |
4fbcca4e | 559 | ALLOC_ARRAY(list, from->nr); |
b67f6b26 | 560 | nr_commits = 0; |
ba3ca1ed | 561 | for (i = 0; i < from->nr; i++) { |
b67f6b26 | 562 | struct object *from_one = from->objects[i].item; |
ba3ca1ed | 563 | |
b67f6b26 DS |
564 | if (!from_one || from_one->flags & assign_flag) |
565 | continue; | |
566 | ||
567 | from_one = deref_tag(the_repository, from_one, | |
568 | "a from object", 0); | |
569 | if (!from_one || from_one->type != OBJ_COMMIT) { | |
85806440 DS |
570 | /* |
571 | * no way to tell if this is reachable by | |
b67f6b26 DS |
572 | * looking at the ancestry chain alone, so |
573 | * leave a note to ourselves not to worry about | |
574 | * this object anymore. | |
575 | */ | |
576 | from->objects[i].item->flags |= assign_flag; | |
577 | continue; | |
578 | } | |
579 | ||
580 | list[nr_commits] = (struct commit *)from_one; | |
581 | if (parse_commit(list[nr_commits]) || | |
582 | list[nr_commits]->generation < min_generation) { | |
583 | result = 0; | |
584 | goto cleanup; | |
585 | } | |
586 | ||
587 | nr_commits++; | |
ba3ca1ed | 588 | } |
4fbcca4e | 589 | |
b67f6b26 | 590 | QSORT(list, nr_commits, compare_commits_by_gen); |
4fbcca4e | 591 | |
b67f6b26 | 592 | for (i = 0; i < nr_commits; i++) { |
4fbcca4e DS |
593 | /* DFS from list[i] */ |
594 | struct commit_list *stack = NULL; | |
595 | ||
596 | list[i]->object.flags |= assign_flag; | |
597 | commit_list_insert(list[i], &stack); | |
598 | ||
599 | while (stack) { | |
600 | struct commit_list *parent; | |
601 | ||
602 | if (stack->item->object.flags & with_flag) { | |
603 | pop_commit(&stack); | |
604 | continue; | |
605 | } | |
606 | ||
607 | for (parent = stack->item->parents; parent; parent = parent->next) { | |
608 | if (parent->item->object.flags & (with_flag | RESULT)) | |
609 | stack->item->object.flags |= RESULT; | |
610 | ||
611 | if (!(parent->item->object.flags & assign_flag)) { | |
612 | parent->item->object.flags |= assign_flag; | |
613 | ||
614 | if (parse_commit(parent->item) || | |
615 | parent->item->date < min_commit_date || | |
616 | parent->item->generation < min_generation) | |
617 | continue; | |
618 | ||
619 | commit_list_insert(parent->item, &stack); | |
620 | break; | |
621 | } | |
622 | } | |
623 | ||
624 | if (!parent) | |
625 | pop_commit(&stack); | |
626 | } | |
627 | ||
628 | if (!(list[i]->object.flags & (with_flag | RESULT))) { | |
629 | result = 0; | |
630 | goto cleanup; | |
631 | } | |
632 | } | |
633 | ||
634 | cleanup: | |
85806440 | 635 | clear_commit_marks_many(nr_commits, list, RESULT | assign_flag); |
4067a646 DS |
636 | free(list); |
637 | ||
638 | for (i = 0; i < from->nr; i++) | |
639 | from->objects[i].item->flags &= ~assign_flag; | |
640 | ||
4fbcca4e | 641 | return result; |
ba3ca1ed | 642 | } |
1792bc12 DS |
643 | |
644 | int can_all_from_reach(struct commit_list *from, struct commit_list *to, | |
645 | int cutoff_by_min_date) | |
646 | { | |
647 | struct object_array from_objs = OBJECT_ARRAY_INIT; | |
648 | time_t min_commit_date = cutoff_by_min_date ? from->item->date : 0; | |
649 | struct commit_list *from_iter = from, *to_iter = to; | |
650 | int result; | |
4fbcca4e | 651 | uint32_t min_generation = GENERATION_NUMBER_INFINITY; |
1792bc12 DS |
652 | |
653 | while (from_iter) { | |
654 | add_object_array(&from_iter->item->object, NULL, &from_objs); | |
655 | ||
656 | if (!parse_commit(from_iter->item)) { | |
657 | if (from_iter->item->date < min_commit_date) | |
658 | min_commit_date = from_iter->item->date; | |
4fbcca4e DS |
659 | |
660 | if (from_iter->item->generation < min_generation) | |
661 | min_generation = from_iter->item->generation; | |
1792bc12 DS |
662 | } |
663 | ||
664 | from_iter = from_iter->next; | |
665 | } | |
666 | ||
667 | while (to_iter) { | |
668 | if (!parse_commit(to_iter->item)) { | |
669 | if (to_iter->item->date < min_commit_date) | |
670 | min_commit_date = to_iter->item->date; | |
4fbcca4e DS |
671 | |
672 | if (to_iter->item->generation < min_generation) | |
673 | min_generation = to_iter->item->generation; | |
1792bc12 DS |
674 | } |
675 | ||
676 | to_iter->item->object.flags |= PARENT2; | |
677 | ||
678 | to_iter = to_iter->next; | |
679 | } | |
680 | ||
681 | result = can_all_from_reach_with_flag(&from_objs, PARENT2, PARENT1, | |
4fbcca4e | 682 | min_commit_date, min_generation); |
1792bc12 DS |
683 | |
684 | while (from) { | |
685 | clear_commit_marks(from->item, PARENT1); | |
686 | from = from->next; | |
687 | } | |
688 | ||
689 | while (to) { | |
690 | clear_commit_marks(to->item, PARENT2); | |
691 | to = to->next; | |
692 | } | |
693 | ||
694 | object_array_clear(&from_objs); | |
695 | return result; | |
696 | } |