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From: "Derrick Stolee via GitGitGadget" <gitgitgadget@gmail.com>
To: git@vger.kernel.org
Cc: newren@gmail.com, Derrick Stolee <stolee@gmail.com>,
	gitster@pobox.com, Derrick Stolee <derrickstolee@github.com>,
	Derrick Stolee <dstolee@microsoft.com>
Subject: [PATCH v2 1/8] cache-tree: clean up cache_tree_update()
Date: Fri, 22 Jan 2021 13:03:52 +0000	[thread overview]
Message-ID: <f9dccaed0acae91b06f5f9ccaf0f9116b65f3f09.1611320639.git.gitgitgadget@gmail.com> (raw)
In-Reply-To: <pull.839.v2.git.1611320639.gitgitgadget@gmail.com>

From: Derrick Stolee <dstolee@microsoft.com>

Make the method safer by allocating a cache_tree member for the given
index_state if it is not already present. This is preferrable to a
BUG() statement or returning with an error because future callers will
want to populate an empty cache-tree using this method.

Also drop local variables that are used exactly once and can be found
directly from the 'istate' parameter.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
---
 cache-tree.c | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/cache-tree.c b/cache-tree.c
index 3f1a8d4f1b7..c1e49901c17 100644
--- a/cache-tree.c
+++ b/cache-tree.c
@@ -436,16 +436,20 @@ static int update_one(struct cache_tree *it,
 
 int cache_tree_update(struct index_state *istate, int flags)
 {
-	struct cache_tree *it = istate->cache_tree;
-	struct cache_entry **cache = istate->cache;
-	int entries = istate->cache_nr;
-	int skip, i = verify_cache(cache, entries, flags);
+	int skip, i;
+
+	i = verify_cache(istate->cache, istate->cache_nr, flags);
 
 	if (i)
 		return i;
+
+	if (!istate->cache_tree)
+		istate->cache_tree = cache_tree();
+
 	trace_performance_enter();
 	trace2_region_enter("cache_tree", "update", the_repository);
-	i = update_one(it, cache, entries, "", 0, &skip, flags);
+	i = update_one(istate->cache_tree, istate->cache, istate->cache_nr,
+		       "", 0, &skip, flags);
 	trace2_region_leave("cache_tree", "update", the_repository);
 	trace_performance_leave("cache_tree_update");
 	if (i < 0)
-- 
gitgitgadget


  reply	other threads:[~2021-01-22 13:10 UTC|newest]

Thread overview: 65+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-20 16:53 [PATCH 0/9] More index cleanups Derrick Stolee via GitGitGadget
2021-01-20 16:53 ` [PATCH 1/9] cache-tree: clean up cache_tree_update() Derrick Stolee via GitGitGadget
2021-01-20 17:21   ` Elijah Newren
2021-01-20 19:10     ` Derrick Stolee
2021-01-20 16:53 ` [PATCH 2/9] cache-tree: extract subtree_pos() Derrick Stolee via GitGitGadget
2021-01-20 17:23   ` Elijah Newren
2021-01-20 16:53 ` [PATCH 3/9] fsmonitor: de-duplicate BUG()s around dirty bits Derrick Stolee via GitGitGadget
2021-01-20 17:26   ` Elijah Newren
2021-01-21 12:53   ` Chris Torek
2021-01-21 15:56     ` Derrick Stolee
2021-01-20 16:53 ` [PATCH 4/9] repository: add repo reference to index_state Derrick Stolee via GitGitGadget
2021-01-20 17:46   ` Elijah Newren
2021-01-20 19:16     ` Derrick Stolee
2021-01-20 19:50       ` Elijah Newren
2021-01-20 16:53 ` [PATCH 5/9] name-hash: use trace2 regions for init Derrick Stolee via GitGitGadget
2021-01-20 17:47   ` Elijah Newren
2021-01-20 16:53 ` [PATCH 6/9] sparse-checkout: load sparse-checkout patterns Derrick Stolee via GitGitGadget
2021-01-20 17:54   ` Elijah Newren
2021-01-20 16:53 ` [PATCH 7/9] sparse-checkout: hold pattern list in index Derrick Stolee via GitGitGadget
2021-01-20 18:03   ` Elijah Newren
2021-01-20 19:22     ` Derrick Stolee
2021-01-20 16:53 ` [PATCH 8/9] test-lib: test_region looks for trace2 regions Derrick Stolee via GitGitGadget
2021-01-20 18:20   ` Elijah Newren
2021-01-20 19:24     ` Derrick Stolee
2021-01-20 16:53 ` [PATCH 9/9] t1092: test interesting sparse-checkout scenarios Derrick Stolee via GitGitGadget
2021-01-20 19:40   ` Elijah Newren
2021-01-21 11:59     ` Derrick Stolee
2021-01-22 13:03 ` [PATCH v2 0/8] More index cleanups Derrick Stolee via GitGitGadget
2021-01-22 13:03   ` Derrick Stolee via GitGitGadget [this message]
2021-01-22 19:11     ` [PATCH v2 1/8] cache-tree: clean up cache_tree_update() Junio C Hamano
2021-01-22 13:03   ` [PATCH v2 2/8] cache-tree: extract subtree_pos() Derrick Stolee via GitGitGadget
2021-01-22 13:03   ` [PATCH v2 3/8] fsmonitor: de-duplicate BUG()s around dirty bits Derrick Stolee via GitGitGadget
2021-01-22 19:18     ` Junio C Hamano
2021-01-22 13:03   ` [PATCH v2 4/8] repository: add repo reference to index_state Derrick Stolee via GitGitGadget
2021-01-22 19:23     ` Junio C Hamano
2021-01-22 13:03   ` [PATCH v2 5/8] name-hash: use trace2 regions for init Derrick Stolee via GitGitGadget
2021-01-22 13:03   ` [PATCH v2 6/8] sparse-checkout: load sparse-checkout patterns Derrick Stolee via GitGitGadget
2021-01-22 13:03   ` [PATCH v2 7/8] test-lib: test_region looks for trace2 regions Derrick Stolee via GitGitGadget
2021-01-22 19:42     ` Junio C Hamano
2021-01-23 18:36       ` Derrick Stolee
2021-01-23 18:50         ` Junio C Hamano
2021-01-22 13:03   ` [PATCH v2 8/8] t1092: test interesting sparse-checkout scenarios Derrick Stolee via GitGitGadget
2021-01-22 19:49   ` [PATCH v2 0/8] More index cleanups Elijah Newren
2021-01-23 18:47     ` Derrick Stolee
2021-01-23 19:58   ` [PATCH v3 0/9] " Derrick Stolee via GitGitGadget
2021-01-23 19:58     ` [PATCH v3 1/9] cache-tree: clean up cache_tree_update() Derrick Stolee via GitGitGadget
2021-01-23 19:58     ` [PATCH v3 2/9] cache-tree: simplify verify_cache() prototype Derrick Stolee via GitGitGadget
2021-01-23 20:24       ` Elijah Newren
2021-01-23 21:02         ` Derrick Stolee
2021-01-23 21:10           ` Elijah Newren
2021-01-23 21:41           ` Junio C Hamano
2021-01-23 21:10         ` Junio C Hamano
2021-01-23 21:14           ` Derrick Stolee
2021-01-23 19:58     ` [PATCH v3 3/9] cache-tree: extract subtree_pos() Derrick Stolee via GitGitGadget
2021-01-23 19:58     ` [PATCH v3 4/9] fsmonitor: de-duplicate BUG()s around dirty bits Derrick Stolee via GitGitGadget
2021-01-23 19:58     ` [PATCH v3 5/9] repository: add repo reference to index_state Derrick Stolee via GitGitGadget
2021-01-23 19:58     ` [PATCH v3 6/9] name-hash: use trace2 regions for init Derrick Stolee via GitGitGadget
2021-01-23 19:58     ` [PATCH v3 7/9] sparse-checkout: load sparse-checkout patterns Derrick Stolee via GitGitGadget
2021-01-23 19:58     ` [PATCH v3 8/9] test-lib: test_region looks for trace2 regions Derrick Stolee via GitGitGadget
2021-01-23 21:07       ` Derrick Stolee
2021-01-23 19:58     ` [PATCH v3 9/9] t1092: test interesting sparse-checkout scenarios Derrick Stolee via GitGitGadget
2021-01-25 18:45       ` Elijah Newren
2021-01-23 20:29     ` [PATCH v3 0/9] More index cleanups Elijah Newren
2021-01-23 21:05       ` Derrick Stolee
2021-01-23 21:42         ` Junio C Hamano

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