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| author | Junio C Hamano <gitster@pobox.com> | 2009-04-20 03:58:20 -0700 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2009-04-20 04:16:42 -0700 |
| commit | 83ae209bf9708bf1b67dbac4a3629a0003af5dbb (patch) | |
| tree | a5e36c308a6a5121b66f7648e69627a71f6c37f6 /builtin-checkout.c | |
| parent | 456156dc068b7664c08e35157e17a6440ec68f32 (diff) | |
| download | git-83ae209bf9708bf1b67dbac4a3629a0003af5dbb.tar.gz | |
checkout branch: prime cache-tree fully
When switching to another branch, the earlier code relied on incremental
invalidation of cache-tree entries to degrade it. While it is not wrong
per-se, we know that the resulting index must fully match the branch we
are switching to unless the -m (merge) option is used.
We should simply fully re-prime the cache-tree using the new tree object
in such a case. And for safety, invalidate the cache-tree as a whole in
other cases.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin-checkout.c')
| -rw-r--r-- | builtin-checkout.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/builtin-checkout.c b/builtin-checkout.c index ffdb33aef5..efa1ebfe07 100644 --- a/builtin-checkout.c +++ b/builtin-checkout.c @@ -368,14 +368,17 @@ static int merge_working_tree(struct checkout_opts *opts, int ret; struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file)); int newfd = hold_locked_index(lock_file, 1); + int reprime_cache_tree = 0; if (read_cache() < 0) return error("corrupt index file"); + cache_tree_free(&active_cache_tree); if (opts->force) { ret = reset_tree(new->commit->tree, opts, 1); if (ret) return ret; + reprime_cache_tree = 1; } else { struct tree_desc trees[2]; struct tree *tree; @@ -411,7 +414,9 @@ static int merge_working_tree(struct checkout_opts *opts, init_tree_desc(&trees[1], tree->buffer, tree->size); ret = unpack_trees(2, trees, &topts); - if (ret == -1) { + if (ret != -1) { + reprime_cache_tree = 1; + } else { /* * Unpack couldn't do a trivial merge; either * give up or do a real merge, depending on @@ -455,6 +460,8 @@ static int merge_working_tree(struct checkout_opts *opts, } } + if (reprime_cache_tree) + prime_cache_tree(&active_cache_tree, new->commit->tree); if (write_cache(newfd, active_cache, active_nr) || commit_locked_index(lock_file)) die("unable to write new index file"); |