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author | Junio C Hamano <gitster@pobox.com> | 2019-10-15 13:47:59 +0900 |
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committer | Junio C Hamano <gitster@pobox.com> | 2019-10-15 13:47:59 +0900 |
commit | 280bd445515acffb83231dfee79c21719ad3bc7b (patch) | |
tree | 170dbd8e836c6111200970d172743a531f5e7387 /cache-tree.c | |
parent | Eighth batch (diff) | |
parent | merge-recursive: fix the fix to the diff3 common ancestor label (diff) | |
download | tgif-280bd445515acffb83231dfee79c21719ad3bc7b.tar.xz |
Merge branch 'en/merge-recursive-cleanup'
The merge-recursive machiery is one of the most complex parts of
the system that accumulated cruft over time. This large series
cleans up the implementation quite a bit.
* en/merge-recursive-cleanup: (26 commits)
merge-recursive: fix the fix to the diff3 common ancestor label
merge-recursive: fix the diff3 common ancestor label for virtual commits
merge-recursive: alphabetize include list
merge-recursive: add sanity checks for relevant merge_options
merge-recursive: rename MERGE_RECURSIVE_* to MERGE_VARIANT_*
merge-recursive: split internal fields into a separate struct
merge-recursive: avoid losing output and leaking memory holding that output
merge-recursive: comment and reorder the merge_options fields
merge-recursive: consolidate unnecessary fields in merge_options
merge-recursive: move some definitions around to clean up the header
merge-recursive: rename merge_options argument to opt in header
merge-recursive: rename 'mrtree' to 'result_tree', for clarity
merge-recursive: use common name for ancestors/common/base_list
merge-recursive: fix some overly long lines
cache-tree: share code between functions writing an index as a tree
merge-recursive: don't force external callers to do our logging
merge-recursive: remove useless parameter in merge_trees()
merge-recursive: exit early if index != head
Ensure index matches head before invoking merge machinery, round N
merge-recursive: remove another implicit dependency on the_repository
...
Diffstat (limited to 'cache-tree.c')
-rw-r--r-- | cache-tree.c | 85 |
1 files changed, 62 insertions, 23 deletions
diff --git a/cache-tree.c b/cache-tree.c index 62edee45e4..1bd1b23d38 100644 --- a/cache-tree.c +++ b/cache-tree.c @@ -609,11 +609,66 @@ static struct cache_tree *cache_tree_find(struct cache_tree *it, const char *pat return it; } +static int write_index_as_tree_internal(struct object_id *oid, + struct index_state *index_state, + int cache_tree_valid, + int flags, + const char *prefix) +{ + if (flags & WRITE_TREE_IGNORE_CACHE_TREE) { + cache_tree_free(&index_state->cache_tree); + cache_tree_valid = 0; + } + + if (!index_state->cache_tree) + index_state->cache_tree = cache_tree(); + + if (!cache_tree_valid && cache_tree_update(index_state, flags) < 0) + return WRITE_TREE_UNMERGED_INDEX; + + if (prefix) { + struct cache_tree *subtree; + subtree = cache_tree_find(index_state->cache_tree, prefix); + if (!subtree) + return WRITE_TREE_PREFIX_ERROR; + oidcpy(oid, &subtree->oid); + } + else + oidcpy(oid, &index_state->cache_tree->oid); + + return 0; +} + +struct tree* write_in_core_index_as_tree(struct repository *repo) { + struct object_id o; + int was_valid, ret; + + struct index_state *index_state = repo->index; + was_valid = index_state->cache_tree && + cache_tree_fully_valid(index_state->cache_tree); + + ret = write_index_as_tree_internal(&o, index_state, was_valid, 0, NULL); + if (ret == WRITE_TREE_UNMERGED_INDEX) { + int i; + fprintf(stderr, "BUG: There are unmerged index entries:\n"); + for (i = 0; i < index_state->cache_nr; i++) { + const struct cache_entry *ce = index_state->cache[i]; + if (ce_stage(ce)) + fprintf(stderr, "BUG: %d %.*s\n", ce_stage(ce), + (int)ce_namelen(ce), ce->name); + } + BUG("unmerged index entries when writing inmemory index"); + } + + return lookup_tree(repo, &index_state->cache_tree->oid); +} + + int write_index_as_tree(struct object_id *oid, struct index_state *index_state, const char *index_path, int flags, const char *prefix) { int entries, was_valid; struct lock_file lock_file = LOCK_INIT; - int ret = 0; + int ret; hold_lock_file_for_update(&lock_file, index_path, LOCK_DIE_ON_ERROR); @@ -622,18 +677,14 @@ int write_index_as_tree(struct object_id *oid, struct index_state *index_state, ret = WRITE_TREE_UNREADABLE_INDEX; goto out; } - if (flags & WRITE_TREE_IGNORE_CACHE_TREE) - cache_tree_free(&index_state->cache_tree); - if (!index_state->cache_tree) - index_state->cache_tree = cache_tree(); + was_valid = !(flags & WRITE_TREE_IGNORE_CACHE_TREE) && + index_state->cache_tree && + cache_tree_fully_valid(index_state->cache_tree); - was_valid = cache_tree_fully_valid(index_state->cache_tree); - if (!was_valid) { - if (cache_tree_update(index_state, flags) < 0) { - ret = WRITE_TREE_UNMERGED_INDEX; - goto out; - } + ret = write_index_as_tree_internal(oid, index_state, was_valid, flags, + prefix); + if (!ret && !was_valid) { write_locked_index(index_state, &lock_file, COMMIT_LOCK); /* Not being able to write is fine -- we are only interested * in updating the cache-tree part, and if the next caller @@ -643,18 +694,6 @@ int write_index_as_tree(struct object_id *oid, struct index_state *index_state, */ } - if (prefix) { - struct cache_tree *subtree; - subtree = cache_tree_find(index_state->cache_tree, prefix); - if (!subtree) { - ret = WRITE_TREE_PREFIX_ERROR; - goto out; - } - oidcpy(oid, &subtree->oid); - } - else - oidcpy(oid, &index_state->cache_tree->oid); - out: rollback_lock_file(&lock_file); return ret; |