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From: "Elijah Newren via GitGitGadget" <gitgitgadget@gmail.com>
To: git@vger.kernel.org
Cc: "Derrick Stolee" <stolee@gmail.com>,
	"Elijah Newren" <newren@gmail.com>,
	"Junio C Hamano" <gitster@pobox.com>,
	"Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
	"Elijah Newren" <newren@gmail.com>,
	"Elijah Newren" <newren@gmail.com>
Subject: [PATCH v4 07/10] diffcore-rename: extend cleanup_dir_rename_info()
Date: Sat, 27 Feb 2021 00:30:45 +0000	[thread overview]
Message-ID: <9c3436840534266ab257ab59e04364722bf3f6e9.1614385849.git.gitgitgadget@gmail.com> (raw)
In-Reply-To: <pull.844.v4.git.1614385849.gitgitgadget@gmail.com>

From: Elijah Newren <newren@gmail.com>

When diffcore_rename_extended() is passed a NULL dir_rename_count, we
will still want to create a temporary one for use by
find_basename_matches(), but have it fully deallocated before
diffcore_rename_extended() returns.  However, when
diffcore_rename_extended() is passed a dir_rename_count, we want to fill
that strmap with appropriate values and return it.  However, for our
interim purposes we may also add entries corresponding to directories
that cannot have been renamed due to still existing on both sides.

Extend cleanup_dir_rename_info() to handle these two different cases,
cleaning up the relevant bits of information for each case.

Reviewed-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
---
 diffcore-rename.c | 40 ++++++++++++++++++++++++++++++++++++----
 1 file changed, 36 insertions(+), 4 deletions(-)

diff --git a/diffcore-rename.c b/diffcore-rename.c
index a1ccf14001f5..2cf9c47c6364 100644
--- a/diffcore-rename.c
+++ b/diffcore-rename.c
@@ -543,8 +543,15 @@ void partial_clear_dir_rename_count(struct strmap *dir_rename_count)
 	strmap_partial_clear(dir_rename_count, 1);
 }
 
-static void cleanup_dir_rename_info(struct dir_rename_info *info)
+static void cleanup_dir_rename_info(struct dir_rename_info *info,
+				    struct strset *dirs_removed,
+				    int keep_dir_rename_count)
 {
+	struct hashmap_iter iter;
+	struct strmap_entry *entry;
+	struct string_list to_remove = STRING_LIST_INIT_NODUP;
+	int i;
+
 	if (!info->setup)
 		return;
 
@@ -555,8 +562,33 @@ static void cleanup_dir_rename_info(struct dir_rename_info *info)
 	strmap_clear(&info->dir_rename_guess, 1);
 
 	/* dir_rename_count */
-	partial_clear_dir_rename_count(info->dir_rename_count);
-	strmap_clear(info->dir_rename_count, 1);
+	if (!keep_dir_rename_count) {
+		partial_clear_dir_rename_count(info->dir_rename_count);
+		strmap_clear(info->dir_rename_count, 1);
+		FREE_AND_NULL(info->dir_rename_count);
+		return;
+	}
+
+	/*
+	 * Although dir_rename_count was passed in
+	 * diffcore_rename_extended() and we want to keep it around and
+	 * return it to that caller, we first want to remove any data
+	 * associated with directories that weren't renamed.
+	 */
+	strmap_for_each_entry(info->dir_rename_count, &iter, entry) {
+		const char *source_dir = entry->key;
+		struct strintmap *counts = entry->value;
+
+		if (!strset_contains(dirs_removed, source_dir)) {
+			string_list_append(&to_remove, source_dir);
+			strintmap_clear(counts);
+			continue;
+		}
+	}
+	for (i = 0; i < to_remove.nr; ++i)
+		strmap_remove(info->dir_rename_count,
+			      to_remove.items[i].string, 1);
+	string_list_clear(&to_remove, 0);
 }
 
 static const char *get_basename(const char *filename)
@@ -1218,7 +1250,7 @@ void diffcore_rename_extended(struct diff_options *options,
 		if (rename_dst[i].filespec_to_free)
 			free_filespec(rename_dst[i].filespec_to_free);
 
-	cleanup_dir_rename_info(&info);
+	cleanup_dir_rename_info(&info, dirs_removed, dir_rename_count != NULL);
 	FREE_AND_NULL(rename_dst);
 	rename_dst_nr = rename_dst_alloc = 0;
 	FREE_AND_NULL(rename_src);
-- 
gitgitgadget


  parent reply	other threads:[~2021-02-27  0:32 UTC|newest]

Thread overview: 61+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-14  7:58 [PATCH 00/10] Optimization batch 8: use file basenames even more Elijah Newren via GitGitGadget
2021-02-14  7:58 ` [PATCH 01/10] Move computation of dir_rename_count from merge-ort to diffcore-rename Elijah Newren via GitGitGadget
2021-02-14  7:58 ` [PATCH 02/10] diffcore-rename: add functions for clearing dir_rename_count Elijah Newren via GitGitGadget
2021-02-14  7:58 ` [PATCH 03/10] diffcore-rename: move dir_rename_counts into a dir_rename_info struct Elijah Newren via GitGitGadget
2021-02-14  7:58 ` [PATCH 04/10] diffcore-rename: extend cleanup_dir_rename_info() Elijah Newren via GitGitGadget
2021-02-14  7:58 ` [PATCH 05/10] diffcore-rename: compute dir_rename_counts in stages Elijah Newren via GitGitGadget
2021-02-14  7:58 ` [PATCH 06/10] diffcore-rename: add a mapping of destination names to their indices Elijah Newren via GitGitGadget
2021-02-14  7:59 ` [PATCH 07/10] diffcore-rename: add a dir_rename_guess field to dir_rename_info Elijah Newren via GitGitGadget
2021-02-14  7:59 ` [PATCH 08/10] diffcore-rename: add a new idx_possible_rename function Elijah Newren via GitGitGadget
2021-02-14  7:59 ` [PATCH 09/10] diffcore-rename: limit dir_rename_counts computation to relevant dirs Elijah Newren via GitGitGadget
2021-02-14  7:59 ` [PATCH 10/10] diffcore-rename: use directory rename guided basename comparisons Elijah Newren via GitGitGadget
2021-02-23 23:43 ` [PATCH v2 00/10] Optimization batch 8: use file basenames even more Elijah Newren via GitGitGadget
2021-02-23 23:43   ` [PATCH v2 01/10] Move computation of dir_rename_count from merge-ort to diffcore-rename Elijah Newren via GitGitGadget
2021-02-24 15:25     ` Derrick Stolee
2021-02-24 18:50       ` Elijah Newren
2021-02-23 23:43   ` [PATCH v2 02/10] diffcore-rename: add functions for clearing dir_rename_count Elijah Newren via GitGitGadget
2021-02-23 23:44   ` [PATCH v2 03/10] diffcore-rename: move dir_rename_counts into a dir_rename_info struct Elijah Newren via GitGitGadget
2021-02-23 23:44   ` [PATCH v2 04/10] diffcore-rename: extend cleanup_dir_rename_info() Elijah Newren via GitGitGadget
2021-02-24 15:37     ` Derrick Stolee
2021-02-25  2:16     ` Ævar Arnfjörð Bjarmason
2021-02-25  2:26       ` Ævar Arnfjörð Bjarmason
2021-02-25  2:34       ` Junio C Hamano
2021-02-23 23:44   ` [PATCH v2 05/10] diffcore-rename: compute dir_rename_counts in stages Elijah Newren via GitGitGadget
2021-02-24 15:43     ` Derrick Stolee
2021-02-23 23:44   ` [PATCH v2 06/10] diffcore-rename: add a mapping of destination names to their indices Elijah Newren via GitGitGadget
2021-02-23 23:44   ` [PATCH v2 07/10] diffcore-rename: add a dir_rename_guess field to dir_rename_info Elijah Newren via GitGitGadget
2021-02-23 23:44   ` [PATCH v2 08/10] diffcore-rename: add a new idx_possible_rename function Elijah Newren via GitGitGadget
2021-02-24 17:35     ` Derrick Stolee
2021-02-25  1:13       ` Elijah Newren
2021-02-23 23:44   ` [PATCH v2 09/10] diffcore-rename: limit dir_rename_counts computation to relevant dirs Elijah Newren via GitGitGadget
2021-02-23 23:44   ` [PATCH v2 10/10] diffcore-rename: use directory rename guided basename comparisons Elijah Newren via GitGitGadget
2021-02-24 17:44     ` Derrick Stolee
2021-02-24 17:50   ` [PATCH v2 00/10] Optimization batch 8: use file basenames even more Derrick Stolee
2021-02-25  1:38     ` Elijah Newren
2021-02-26  1:58   ` [PATCH v3 " Elijah Newren via GitGitGadget
2021-02-26  1:58     ` [PATCH v3 01/10] diffcore-rename: use directory rename guided basename comparisons Elijah Newren via GitGitGadget
2021-02-26  1:58     ` [PATCH v3 02/10] diffcore-rename: add a new idx_possible_rename function Elijah Newren via GitGitGadget
2021-02-26 15:52       ` Derrick Stolee
2021-02-26  1:58     ` [PATCH v3 03/10] diffcore-rename: add a mapping of destination names to their indices Elijah Newren via GitGitGadget
2021-02-26  1:58     ` [PATCH v3 04/10] Move computation of dir_rename_count from merge-ort to diffcore-rename Elijah Newren via GitGitGadget
2021-02-26 15:55       ` Derrick Stolee
2021-02-26  1:58     ` [PATCH v3 05/10] diffcore-rename: add function for clearing dir_rename_count Elijah Newren via GitGitGadget
2021-02-26  1:58     ` [PATCH v3 06/10] diffcore-rename: move dir_rename_counts into dir_rename_info struct Elijah Newren via GitGitGadget
2021-02-26  1:58     ` [PATCH v3 07/10] diffcore-rename: extend cleanup_dir_rename_info() Elijah Newren via GitGitGadget
2021-02-26  1:58     ` [PATCH v3 08/10] diffcore-rename: compute dir_rename_counts in stages Elijah Newren via GitGitGadget
2021-02-26  1:58     ` [PATCH v3 09/10] diffcore-rename: limit dir_rename_counts computation to relevant dirs Elijah Newren via GitGitGadget
2021-02-26  1:58     ` [PATCH v3 10/10] diffcore-rename: compute dir_rename_guess from dir_rename_counts Elijah Newren via GitGitGadget
2021-02-26 16:34     ` [PATCH v3 00/10] Optimization batch 8: use file basenames even more Derrick Stolee
2021-02-26 19:28       ` Elijah Newren
2021-02-27  0:30     ` [PATCH v4 " Elijah Newren via GitGitGadget
2021-02-27  0:30       ` [PATCH v4 01/10] diffcore-rename: use directory rename guided basename comparisons Elijah Newren via GitGitGadget
2021-02-27  0:30       ` [PATCH v4 02/10] diffcore-rename: provide basic implementation of idx_possible_rename() Elijah Newren via GitGitGadget
2021-02-27  0:30       ` [PATCH v4 03/10] diffcore-rename: add a mapping of destination names to their indices Elijah Newren via GitGitGadget
2021-02-27  0:30       ` [PATCH v4 04/10] Move computation of dir_rename_count from merge-ort to diffcore-rename Elijah Newren via GitGitGadget
2021-02-27  0:30       ` [PATCH v4 05/10] diffcore-rename: add function for clearing dir_rename_count Elijah Newren via GitGitGadget
2021-02-27  0:30       ` [PATCH v4 06/10] diffcore-rename: move dir_rename_counts into dir_rename_info struct Elijah Newren via GitGitGadget
2021-02-27  0:30       ` Elijah Newren via GitGitGadget [this message]
2021-02-27  0:30       ` [PATCH v4 08/10] diffcore-rename: compute dir_rename_counts in stages Elijah Newren via GitGitGadget
2021-02-27  0:30       ` [PATCH v4 09/10] diffcore-rename: limit dir_rename_counts computation to relevant dirs Elijah Newren via GitGitGadget
2021-02-27  0:30       ` [PATCH v4 10/10] diffcore-rename: compute dir_rename_guess from dir_rename_counts Elijah Newren via GitGitGadget
2021-03-09 21:52       ` [PATCH v4 00/10] Optimization batch 8: use file basenames even more Derrick Stolee

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