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From: mhagger@alum.mit.edu
To: Junio C Hamano <gitster@pobox.com>
Cc: git@vger.kernel.org, Jeff King <peff@peff.net>,
	Jakub Narebski <jnareb@gmail.com>,
	Heiko Voigt <hvoigt@hvoigt.net>,
	Johan Herland <johan@herland.net>,
	Christian Couder <chriscool@tuxfamily.org>,
	Michael Haggerty <mhagger@alum.mit.edu>
Subject: [PATCH v2 16/18] struct ref_dir: store a reference to the enclosing ref_cache
Date: Fri, 27 Apr 2012 00:27:05 +0200	[thread overview]
Message-ID: <1335479227-7877-17-git-send-email-mhagger@alum.mit.edu> (raw)
In-Reply-To: <1335479227-7877-1-git-send-email-mhagger@alum.mit.edu>

From: Michael Haggerty <mhagger@alum.mit.edu>

This means that a directory ref_entry contains all of the information
needed by read_loose_refs().

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
---
 refs.c |   15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/refs.c b/refs.c
index f6447e3..110e801 100644
--- a/refs.c
+++ b/refs.c
@@ -106,6 +106,8 @@ struct ref_value {
 	unsigned char peeled[20];
 };
 
+struct ref_cache;
+
 struct ref_dir {
 	int nr, alloc;
 
@@ -117,6 +119,9 @@ struct ref_dir {
 	 */
 	int sorted;
 
+	/* A pointer to the ref_cache that contains this ref_dir. */
+	struct ref_cache *ref_cache;
+
 	struct ref_entry **entries;
 };
 
@@ -234,12 +239,14 @@ static void clear_ref_dir(struct ref_dir *dir)
  * dirname is the name of the directory with a trailing slash (e.g.,
  * "refs/heads/") or "" for the top-level directory.
  */
-static struct ref_entry *create_dir_entry(const char *dirname)
+static struct ref_entry *create_dir_entry(struct ref_cache *ref_cache,
+					  const char *dirname)
 {
 	struct ref_entry *direntry;
 	int len = strlen(dirname);
 	direntry = xcalloc(1, sizeof(struct ref_entry) + len + 1);
 	memcpy(direntry->name, dirname, len + 1);
+	direntry->u.subdir.ref_cache = ref_cache;
 	direntry->flag = REF_DIR;
 	return direntry;
 }
@@ -296,7 +303,7 @@ static struct ref_dir *search_for_subdir(struct ref_dir *dir,
 	if (!entry) {
 		if (!mkdir)
 			return NULL;
-		entry = create_dir_entry(subdirname);
+		entry = create_dir_entry(dir->ref_cache, subdirname);
 		add_entry_to_dir(dir, entry);
 	}
 	return get_ref_dir(entry);
@@ -753,7 +760,7 @@ static struct ref_dir *get_packed_refs(struct ref_cache *refs)
 		const char *packed_refs_file;
 		FILE *f;
 
-		refs->packed = create_dir_entry("");
+		refs->packed = create_dir_entry(refs, "");
 		if (*refs->name)
 			packed_refs_file = git_path_submodule(refs->name, "packed-refs");
 		else
@@ -843,7 +850,7 @@ static void read_loose_refs(struct ref_cache *refs, const char *dirname,
 static struct ref_dir *get_loose_refs(struct ref_cache *refs)
 {
 	if (!refs->loose) {
-		refs->loose = create_dir_entry("");
+		refs->loose = create_dir_entry(refs, "");
 		read_loose_refs(refs, "refs/",
 				search_for_subdir(get_ref_dir(refs->loose),
 						  "refs/", 1));
-- 
1.7.10

  parent reply	other threads:[~2012-04-26 22:27 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-04-26 22:26 [PATCH v2 00/18] Read loose references lazily mhagger
2012-04-26 22:26 ` [PATCH v2 01/18] get_ref_dir(): return early if directory cannot be read mhagger
2012-04-26 22:26 ` [PATCH v2 02/18] get_ref_dir(): use a strbuf to hold refname mhagger
2012-04-26 22:26 ` [PATCH v2 03/18] get_ref_dir(): rename "base" parameter to "dirname" mhagger
2012-04-26 22:26 ` [PATCH v2 04/18] get_ref_dir(): require that the dirname argument ends in '/' mhagger
2012-04-26 22:26 ` [PATCH v2 05/18] refs.c: extract function search_for_subdir() mhagger
2012-05-03 19:48   ` Junio C Hamano
2012-05-03 20:56     ` Junio C Hamano
2012-05-04  7:24       ` Michael Haggerty
2012-04-26 22:26 ` [PATCH v2 06/18] get_ref_dir(): take the containing directory as argument mhagger
2012-04-26 22:26 ` [PATCH v2 07/18] do_for_each_reflog(): return early on error mhagger
2012-04-26 22:26 ` [PATCH v2 08/18] do_for_each_reflog(): use a strbuf to hold logfile name mhagger
2012-04-26 23:25   ` Junio C Hamano
2012-04-27  8:59     ` Michael Haggerty
2012-05-02 20:06       ` Junio C Hamano
2012-05-03  6:47         ` Michael Haggerty
2012-04-26 22:26 ` [PATCH v2 09/18] do_for_each_reflog(): reuse strbuf across recursive function calls mhagger
2012-04-26 22:26 ` [PATCH v2 10/18] bisect: copy filename string obtained from git_path() mhagger
2012-04-26 22:27 ` [PATCH v2 11/18] find_containing_dir(): use strbuf in implementation of this function mhagger
2012-04-26 22:27 ` [PATCH v2 12/18] refs: wrap top-level ref_dirs in ref_entries mhagger
2012-04-26 22:27 ` [PATCH v2 13/18] read_loose_refs(): rename function from get_ref_dir() mhagger
2012-04-26 22:27 ` [PATCH v2 14/18] get_ref_dir(): add function for getting a ref_dir from a ref_entry mhagger
2012-04-26 22:27 ` [PATCH v2 15/18] search_for_subdir(): return (ref_dir *) instead of (ref_entry *) mhagger
2012-04-26 22:27 ` mhagger [this message]
2012-04-26 22:27 ` [PATCH v2 17/18] read_loose_refs(): eliminate ref_cache argument mhagger
2012-04-26 22:27 ` [PATCH v2 18/18] refs: read loose references lazily mhagger

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