From a5aecb2cdc8c5f2c1501bdbe30c02959948d8442 Mon Sep 17 00:00:00 2001 From: Patrick Steinhardt Date: Mon, 30 Sep 2024 11:13:45 +0200 Subject: diff: improve lifecycle management of diff queues The lifecycle management of diff queues is somewhat confusing: - For most of the part this can be attributed to `DIFF_QUEUE_CLEAR()`, which does not release any memory but rather initializes the queue, only. This is in contrast to our common naming schema, where "clearing" means that we release underlying memory and then re-initialize the data structure such that it is ready to use. - A second offender is `diff_free_queue()`, which does not free the queue structure itself. It is rather a release-style function. Refactor the code to make things less confusing. `DIFF_QUEUE_CLEAR()` is replaced by `DIFF_QUEUE_INIT` and `diff_queue_init()`, while `diff_free_queue()` is replaced by `diff_queue_release()`. While on it, adapt callsites where we call `DIFF_QUEUE_CLEAR()` with the intent to release underlying memory to instead call `diff_queue_clear()` to fix memory leaks. This memory leak is exposed by t4211, but plugging it alone does not make the whole test suite pass. Signed-off-by: Patrick Steinhardt Signed-off-by: Junio C Hamano --- diffcore-break.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) (limited to 'diffcore-break.c') diff --git a/diffcore-break.c b/diffcore-break.c index 02735f80c6..c4c2173f30 100644 --- a/diffcore-break.c +++ b/diffcore-break.c @@ -131,7 +131,7 @@ static int should_break(struct repository *r, void diffcore_break(struct repository *r, int break_score) { struct diff_queue_struct *q = &diff_queued_diff; - struct diff_queue_struct outq; + struct diff_queue_struct outq = DIFF_QUEUE_INIT; /* When the filepair has this much edit (insert and delete), * it is first considered to be a rewrite and broken into a @@ -178,8 +178,6 @@ void diffcore_break(struct repository *r, int break_score) if (!merge_score) merge_score = DEFAULT_MERGE_SCORE; - DIFF_QUEUE_CLEAR(&outq); - for (i = 0; i < q->nr; i++) { struct diff_filepair *p = q->queue[i]; int score; @@ -275,11 +273,9 @@ static void merge_broken(struct diff_filepair *p, void diffcore_merge_broken(void) { struct diff_queue_struct *q = &diff_queued_diff; - struct diff_queue_struct outq; + struct diff_queue_struct outq = DIFF_QUEUE_INIT; int i, j; - DIFF_QUEUE_CLEAR(&outq); - for (i = 0; i < q->nr; i++) { struct diff_filepair *p = q->queue[i]; if (!p) -- cgit v1.3