From: "Victoria Dye via GitGitGadget" <gitgitgadget@gmail.com>
To: git@vger.kernel.org
Cc: stolee@gmail.com, gitster@pobox.com,
Elijah Newren <newren@gmail.com>, Victoria Dye <vdye@github.com>,
Victoria Dye <vdye@github.com>
Subject: [PATCH v5 3/4] sparse-index: add ensure_correct_sparsity function
Date: Tue, 23 Nov 2021 00:20:32 +0000 [thread overview]
Message-ID: <d2133ca1724258be01d7d2c3ac4888cd67eb3642.1637626833.git.gitgitgadget@gmail.com> (raw)
In-Reply-To: <pull.1059.v5.git.1637626833.gitgitgadget@gmail.com>
From: Victoria Dye <vdye@github.com>
The `ensure_correct_sparsity` function is intended to provide a means of
aligning the in-core index with the sparsity required by the repository
settings and other properties of the index. The function first checks
whether a sparse index is allowed (per repository & sparse checkout pattern
settings). If the sparse index may be used, the index is converted to
sparse; otherwise, it is explicitly expanded with `ensure_full_index`.
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Victoria Dye <vdye@github.com>
---
sparse-index.c | 33 +++++++++++++++++++++++++++++----
sparse-index.h | 1 +
2 files changed, 30 insertions(+), 4 deletions(-)
diff --git a/sparse-index.c b/sparse-index.c
index 85613cd8a3a..a1d505d50e9 100644
--- a/sparse-index.c
+++ b/sparse-index.c
@@ -122,17 +122,17 @@ static int index_has_unmerged_entries(struct index_state *istate)
return 0;
}
-int convert_to_sparse(struct index_state *istate, int flags)
+static int is_sparse_index_allowed(struct index_state *istate, int flags)
{
- int test_env;
- if (istate->sparse_index || !istate->cache_nr ||
- !core_apply_sparse_checkout || !core_sparse_checkout_cone)
+ if (!core_apply_sparse_checkout || !core_sparse_checkout_cone)
return 0;
if (!istate->repo)
istate->repo = the_repository;
if (!(flags & SPARSE_INDEX_MEMORY_ONLY)) {
+ int test_env;
+
/*
* The sparse index is not (yet) integrated with a split index.
*/
@@ -168,6 +168,19 @@ int convert_to_sparse(struct index_state *istate, int flags)
if (!istate->sparse_checkout_patterns->use_cone_patterns)
return 0;
+ return 1;
+}
+
+int convert_to_sparse(struct index_state *istate, int flags)
+{
+ /*
+ * If the index is already sparse, empty, or otherwise
+ * cannot be converted to sparse, do not convert.
+ */
+ if (istate->sparse_index || !istate->cache_nr ||
+ !is_sparse_index_allowed(istate, flags))
+ return 0;
+
/*
* NEEDSWORK: If we have unmerged entries, then stay full.
* Unmerged entries prevent the cache-tree extension from working.
@@ -316,6 +329,18 @@ void ensure_full_index(struct index_state *istate)
trace2_region_leave("index", "ensure_full_index", istate->repo);
}
+void ensure_correct_sparsity(struct index_state *istate)
+{
+ /*
+ * If the index can be sparse, make it sparse. Otherwise,
+ * ensure the index is full.
+ */
+ if (is_sparse_index_allowed(istate, 0))
+ convert_to_sparse(istate, 0);
+ else
+ ensure_full_index(istate);
+}
+
/*
* This static global helps avoid infinite recursion between
* expand_to_path() and index_file_exists().
diff --git a/sparse-index.h b/sparse-index.h
index 9f3d7bc7faf..656bd835b25 100644
--- a/sparse-index.h
+++ b/sparse-index.h
@@ -4,6 +4,7 @@
struct index_state;
#define SPARSE_INDEX_MEMORY_ONLY (1 << 0)
int convert_to_sparse(struct index_state *istate, int flags);
+void ensure_correct_sparsity(struct index_state *istate);
/*
* Some places in the codebase expect to search for a specific path.
--
gitgitgadget
next prev parent reply other threads:[~2021-11-23 0:20 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-15 19:54 [PATCH 0/2] sparse-index: expand/collapse based on 'index.sparse' Victoria Dye via GitGitGadget
2021-10-15 19:54 ` [PATCH 1/2] test-read-cache.c: prepare_repo_settings after config init Victoria Dye via GitGitGadget
2021-10-15 19:54 ` [PATCH 2/2] sparse-index: update index read to consider index.sparse config Victoria Dye via GitGitGadget
2021-10-15 21:53 ` Junio C Hamano
2021-10-17 1:21 ` Derrick Stolee
2021-10-17 5:58 ` Junio C Hamano
2021-10-17 19:33 ` Derrick Stolee
2021-10-18 1:15 ` Junio C Hamano
2021-10-18 13:25 ` Derrick Stolee
2021-10-18 14:14 ` Victoria Dye
2021-10-21 13:26 ` Derrick Stolee
2021-10-18 16:09 ` Junio C Hamano
2021-10-21 20:48 ` [PATCH v2 0/3] sparse-index: expand/collapse based on 'index.sparse' Victoria Dye via GitGitGadget
2021-10-21 20:48 ` [PATCH v2 1/3] test-read-cache.c: prepare_repo_settings after config init Victoria Dye via GitGitGadget
2021-10-21 20:48 ` [PATCH v2 2/3] sparse-index: add ensure_correct_sparsity function Victoria Dye via GitGitGadget
2021-10-21 22:20 ` Junio C Hamano
2021-10-27 17:21 ` Victoria Dye
2021-10-21 20:48 ` [PATCH v2 3/3] sparse-index: update do_read_index to ensure correct sparsity Victoria Dye via GitGitGadget
2021-10-27 18:20 ` [PATCH v3 0/3] sparse-index: expand/collapse based on 'index.sparse' Victoria Dye via GitGitGadget
2021-10-27 18:20 ` [PATCH v3 1/3] test-read-cache.c: prepare_repo_settings after config init Victoria Dye via GitGitGadget
2021-10-27 18:20 ` [PATCH v3 2/3] sparse-index: add ensure_correct_sparsity function Victoria Dye via GitGitGadget
2021-10-27 20:07 ` Derrick Stolee
2021-10-27 21:32 ` Junio C Hamano
2021-10-28 1:24 ` Derrick Stolee
2021-10-29 13:43 ` Victoria Dye
2021-10-27 18:20 ` [PATCH v3 3/3] sparse-index: update do_read_index to ensure correct sparsity Victoria Dye via GitGitGadget
2021-10-27 20:08 ` [PATCH v3 0/3] sparse-index: expand/collapse based on 'index.sparse' Derrick Stolee
2021-10-29 13:51 ` [PATCH v4 0/4] " Victoria Dye via GitGitGadget
2021-10-29 13:51 ` [PATCH v4 1/4] test-read-cache.c: prepare_repo_settings after config init Victoria Dye via GitGitGadget
2021-10-29 13:51 ` [PATCH v4 2/4] sparse-index: avoid unnecessary cache tree clearing Victoria Dye via GitGitGadget
2021-10-29 18:45 ` Junio C Hamano
2021-10-29 19:00 ` Derrick Stolee
2021-10-29 20:01 ` Junio C Hamano
2021-10-29 13:51 ` [PATCH v4 3/4] sparse-index: add ensure_correct_sparsity function Victoria Dye via GitGitGadget
2021-10-29 13:51 ` [PATCH v4 4/4] sparse-index: update do_read_index to ensure correct sparsity Victoria Dye via GitGitGadget
2021-11-22 17:36 ` Elijah Newren
2021-11-22 18:59 ` Victoria Dye
2021-11-22 17:40 ` [PATCH v4 0/4] sparse-index: expand/collapse based on 'index.sparse' Elijah Newren
2021-11-23 0:20 ` [PATCH v5 " Victoria Dye via GitGitGadget
2021-11-23 0:20 ` [PATCH v5 1/4] test-read-cache.c: prepare_repo_settings after config init Victoria Dye via GitGitGadget
2021-11-23 0:20 ` [PATCH v5 2/4] sparse-index: avoid unnecessary cache tree clearing Victoria Dye via GitGitGadget
2021-11-23 0:20 ` Victoria Dye via GitGitGadget [this message]
2021-11-23 0:20 ` [PATCH v5 4/4] sparse-index: update do_read_index to ensure correct sparsity Victoria Dye via GitGitGadget
2021-11-23 17:21 ` [PATCH v5 0/4] sparse-index: expand/collapse based on 'index.sparse' Elijah Newren
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