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From: Paul Tan <pyokagan@gmail.com>
To: Stefan Beller <sbeller@google.com>
Cc: "git@vger.kernel.org" <git@vger.kernel.org>,
	Johannes Schindelin <johannes.schindelin@gmx.de>
Subject: Re: [PATCH v5 12/44] builtin-am: implement --skip
Date: Sat, 18 Jul 2015 23:22:12 +0800	[thread overview]
Message-ID: <20150718152212.GA22976@yoshi.chippynet.com> (raw)
In-Reply-To: <CAGZ79kYYJughaqBD7hzzDBO4xmrJ7P3VT7m=qG-SRLXiK-f_vA@mail.gmail.com>

On Tue, Jul 14, 2015 at 09:54:10AM -0700, Stefan Beller wrote:
> So what I meant to suggest, was to only allocate the memory if we really need it
> by moving the allocation further down.
> 
> static int clean_index(const unsigned char *head, const unsigned char *remote)
> {
>        struct lock_file *lock_file;
> ...
> ... // includes return -1, which would not leak the memory already allocated
> ...
>        lock_file = xalloc (...);
>        hold_locked_index(lock_file, 1);

Ah, sorry, I misinterpreted your message ><. Thanks for catching this.

I've moved all the lock file memory allocation to just before the
hold_locked_index() calls on my end.

diff --git a/builtin/am.c b/builtin/am.c
index c597325..dc8e862 100644
--- a/builtin/am.c
+++ b/builtin/am.c
@@ -1138,13 +1138,12 @@ static const char *msgnum(const struct am_state *state)
  */
 static void refresh_and_write_cache(void)
 {
-	static struct lock_file lock_file;
+	struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file));
 
-	hold_locked_index(&lock_file, 1);
+	hold_locked_index(lock_file, 1);
 	refresh_cache(REFRESH_QUIET);
-	if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
+	if (write_locked_index(&the_index, lock_file, COMMIT_LOCK))
 		die(_("unable to write index file"));
-	rollback_lock_file(&lock_file);
 }
 
 /**
@@ -1923,13 +1922,14 @@ next:
  */
 static int fast_forward_to(struct tree *head, struct tree *remote, int reset)
 {
-	struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file));
+	struct lock_file *lock_file;
 	struct unpack_trees_options opts;
 	struct tree_desc t[2];
 
 	if (parse_tree(head) || parse_tree(remote))
 		return -1;
 
+	lock_file = xcalloc(1, sizeof(struct lock_file));
 	hold_locked_index(lock_file, 1);
 
 	refresh_cache(REFRESH_QUIET);
@@ -1962,7 +1962,7 @@ static int fast_forward_to(struct tree *head, struct tree *remote, int reset)
  */
 static int clean_index(const unsigned char *head, const unsigned char *remote)
 {
-	struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file));
+	struct lock_file *lock_file;
 	struct tree *head_tree, *remote_tree, *index_tree;
 	unsigned char index[GIT_SHA1_RAWSZ];
 	struct pathspec pathspec;
@@ -1992,6 +1992,7 @@ static int clean_index(const unsigned char *head, const unsigned char *remote)
 
 	memset(&pathspec, 0, sizeof(pathspec));
 
+	lock_file = xcalloc(1, sizeof(struct lock_file));
 	hold_locked_index(lock_file, 1);
 
 	if (read_tree(remote_tree, 0, &pathspec)) {

Thanks,
Paul

  reply	other threads:[~2015-07-18 15:23 UTC|newest]

Thread overview: 63+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-07-07 14:20 [PATCH v5 00/44] Make git-am a builtin Paul Tan
2015-07-07 14:20 ` [PATCH v5 01/44] wrapper: implement xopen() Paul Tan
2015-07-07 14:20 ` [PATCH v5 02/44] wrapper: implement xfopen() Paul Tan
2015-07-07 14:20 ` [PATCH v5 03/44] builtin-am: implement skeletal builtin am Paul Tan
2015-07-07 14:20 ` [PATCH v5 04/44] builtin-am: implement patch queue mechanism Paul Tan
2015-07-07 14:20 ` [PATCH v5 05/44] builtin-am: split out mbox/maildir patches with git-mailsplit Paul Tan
2015-07-07 14:20 ` [PATCH v5 06/44] builtin-am: auto-detect mbox patches Paul Tan
2015-07-07 14:20 ` [PATCH v5 07/44] builtin-am: extract patch and commit info with git-mailinfo Paul Tan
2015-07-07 14:20 ` [PATCH v5 08/44] builtin-am: apply patch with git-apply Paul Tan
2015-07-07 14:20 ` [PATCH v5 09/44] builtin-am: implement committing applied patch Paul Tan
2015-07-07 14:20 ` [PATCH v5 10/44] builtin-am: refuse to apply patches if index is dirty Paul Tan
2015-07-07 14:20 ` [PATCH v5 11/44] builtin-am: implement --resolved/--continue Paul Tan
2015-07-07 14:20 ` [PATCH v5 12/44] builtin-am: implement --skip Paul Tan
2015-07-13 19:05   ` Stefan Beller
2015-07-14  9:34     ` Paul Tan
2015-07-14 16:54       ` Stefan Beller
2015-07-18 15:22         ` Paul Tan [this message]
2015-07-07 14:20 ` [PATCH v5 13/44] builtin-am: implement --abort Paul Tan
2015-07-07 14:20 ` [PATCH v5 14/44] builtin-am: reject patches when there's a session in progress Paul Tan
2015-07-07 14:20 ` [PATCH v5 15/44] builtin-am: implement -q/--quiet Paul Tan
2015-07-07 14:20 ` [PATCH v5 16/44] builtin-am: exit with user friendly message on failure Paul Tan
2015-07-07 14:20 ` [PATCH v5 17/44] builtin-am: implement -s/--signoff Paul Tan
2015-07-07 14:20 ` [PATCH v5 18/44] cache-tree: introduce write_index_as_tree() Paul Tan
2015-07-07 20:10   ` Junio C Hamano
2015-07-07 14:20 ` [PATCH v5 19/44] builtin-am: implement --3way, am.threeWay Paul Tan
2015-07-07 20:14   ` Junio C Hamano
2015-07-14  9:32     ` Paul Tan
2015-07-07 14:20 ` [PATCH v5 20/44] builtin-am: implement --rebasing mode Paul Tan
2015-07-07 14:20 ` [PATCH v5 21/44] builtin-am: bypass git-mailinfo when --rebasing Paul Tan
2015-07-07 14:20 ` [PATCH v5 22/44] builtin-am: handle stray state directory Paul Tan
2015-07-07 14:20 ` [PATCH v5 23/44] builtin-am: implement -u/--utf8 Paul Tan
2015-07-07 14:20 ` [PATCH v5 24/44] builtin-am: implement -k/--keep, --keep-non-patch Paul Tan
2015-07-07 14:20 ` [PATCH v5 25/44] builtin-am: implement --[no-]message-id, am.messageid Paul Tan
2015-07-07 14:20 ` [PATCH v5 26/44] builtin-am: support --keep-cr, am.keepcr Paul Tan
2015-07-07 14:20 ` [PATCH v5 27/44] builtin-am: implement --[no-]scissors Paul Tan
2015-07-07 14:20 ` [PATCH v5 28/44] builtin-am: pass git-apply's options to git-apply Paul Tan
2015-07-07 14:20 ` [PATCH v5 29/44] builtin-am: implement --ignore-date Paul Tan
2015-07-07 14:20 ` [PATCH v5 30/44] builtin-am: implement --committer-date-is-author-date Paul Tan
2015-07-07 14:20 ` [PATCH v5 31/44] builtin-am: implement -S/--gpg-sign, commit.gpgsign Paul Tan
2015-07-07 14:20 ` [PATCH v5 32/44] builtin-am: invoke post-rewrite hook Paul Tan
2015-07-07 14:20 ` [PATCH v5 33/44] builtin-am: support automatic notes copying Paul Tan
2015-07-07 14:20 ` [PATCH v5 34/44] builtin-am: invoke applypatch-msg hook Paul Tan
2015-07-07 14:20 ` [PATCH v5 35/44] builtin-am: invoke pre-applypatch hook Paul Tan
2015-07-07 14:20 ` [PATCH v5 36/44] builtin-am: invoke post-applypatch hook Paul Tan
2015-07-07 14:20 ` [PATCH v5 37/44] builtin-am: rerere support Paul Tan
2015-07-07 14:20 ` [PATCH v5 38/44] builtin-am: support and auto-detect StGit patches Paul Tan
2015-07-07 14:20 ` [PATCH v5 39/44] builtin-am: support and auto-detect StGit series files Paul Tan
2015-07-07 14:20 ` [PATCH v5 40/44] builtin-am: support and auto-detect mercurial patches Paul Tan
2015-07-07 14:20 ` [PATCH v5 41/44] builtin-am: implement -i/--interactive Paul Tan
2015-07-07 14:21 ` [PATCH v5 42/44] builtin-am: implement legacy -b/--binary option Paul Tan
2015-07-07 14:21 ` [PATCH v5 43/44] builtin-am: check for valid committer ident Paul Tan
2015-07-07 14:21 ` [PATCH v5 44/44] builtin-am: remove redirection to git-am.sh Paul Tan
2015-07-07 18:52 ` [PATCH v5 00/44] Make git-am a builtin Junio C Hamano
2015-07-07 19:25   ` Paul Tan
2015-07-08  7:31 ` Junio C Hamano
2015-07-08  7:44   ` Paul Tan
2015-07-08  7:48   ` Junio C Hamano
2015-07-08  8:19     ` Paul Tan
2015-07-09  6:00       ` Junio C Hamano
2015-07-12 12:29         ` Paul Tan
2015-07-12 17:32           ` Junio C Hamano
2015-07-13 22:31 ` Junio C Hamano
2015-07-14 10:08   ` Paul Tan

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