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[v2,5/9] cache-tree: trace regions for prime_cache_tree

Message ID 2b2e70bb77c8dafbf2cfedd9e68f834f02deb4a2.1609729758.git.gitgitgadget@gmail.com (mailing list archive)
State Superseded
Headers show
Series Cleanups around index operations | expand

Commit Message

Derrick Stolee Jan. 4, 2021, 3:09 a.m. UTC 
From: Derrick Stolee <dstolee@microsoft.com>

Commands such as "git reset --hard" rebuild the in-memory representation
of the cached tree index extension by parsing tree objects starting at a
known root tree. The performance of this operation can vary widely
depending on the width and depth of the repository's working directory
structure. Measure the time in this operation using trace2 regions in
prime_cache_tree().

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
---
 cache-tree.c | 3 +++
 1 file changed, 3 insertions(+)
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Patch

diff --git a/cache-tree.c b/cache-tree.c
index 45fb57b17f3..7da59b2aa07 100644
--- a/cache-tree.c
+++ b/cache-tree.c
@@ -744,10 +744,13 @@  void prime_cache_tree(struct repository *r,
 		      struct index_state *istate,
 		      struct tree *tree)
 {
+	trace2_region_enter("cache-tree", "prime_cache_tree", the_repository);
 	cache_tree_free(&istate->cache_tree);
 	istate->cache_tree = cache_tree();
+
 	prime_cache_tree_rec(r, istate->cache_tree, tree);
 	istate->cache_changed |= CACHE_TREE_CHANGED;
+	trace2_region_leave("cache-tree", "prime_cache_tree", the_repository);
 }
 
 /*