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authorJunio C Hamano <gitster@pobox.com>2016-03-08 12:11:00 -0800
committerJunio C Hamano <gitster@pobox.com>2016-04-06 15:52:22 -0700
commit1be1e85115244a3a11f89b75c798823a7dce795f (patch)
tree881379c837cd22bcba4ef7b4de6aa81fe78f8661 /rerere.c
parent629716d256a792179325c2cc7945bb2d81dda8c2 (diff)
downloadgit-1be1e85115244a3a11f89b75c798823a7dce795f.tar.gz
rerere: gc and clear
Adjust "git rerere gc" and "git rerere clear" to the new world order with rerere database with multiple variants for the same shape of conflicts. Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'rerere.c')
-rw-r--r--rerere.c87
1 files changed, 48 insertions, 39 deletions
diff --git a/rerere.c b/rerere.c
index 353227cdaf..3d4dd33724 100644
--- a/rerere.c
+++ b/rerere.c
@@ -1081,29 +1081,16 @@ int rerere_forget(struct pathspec *pathspec)
* Garbage collection support
*/
-/*
- * Note that this is not reentrant but is used only one-at-a-time
- * so it does not matter right now.
- */
-static struct rerere_id *dirname_to_id(const char *name)
-{
- static struct rerere_id id;
- id.collection = find_rerere_dir(name);
- return &id;
-}
-
-static time_t rerere_created_at(const char *dir_name)
+static time_t rerere_created_at(struct rerere_id *id)
{
struct stat st;
- struct rerere_id *id = dirname_to_id(dir_name);
return stat(rerere_path(id, "preimage"), &st) ? (time_t) 0 : st.st_mtime;
}
-static time_t rerere_last_used_at(const char *dir_name)
+static time_t rerere_last_used_at(struct rerere_id *id)
{
struct stat st;
- struct rerere_id *id = dirname_to_id(dir_name);
return stat(rerere_path(id, "postimage"), &st) ? (time_t) 0 : st.st_mtime;
}
@@ -1113,15 +1100,28 @@ static time_t rerere_last_used_at(const char *dir_name)
*/
static void unlink_rr_item(struct rerere_id *id)
{
- unlink(rerere_path(id, "thisimage"));
- unlink(rerere_path(id, "preimage"));
- unlink(rerere_path(id, "postimage"));
- /*
- * NEEDSWORK: what if this rmdir() fails? Wouldn't we then
- * assume that we already have preimage recorded in
- * do_plain_rerere()?
- */
- rmdir(rerere_path(id, NULL));
+ unlink_or_warn(rerere_path(id, "thisimage"));
+ remove_variant(id);
+ id->collection->status[id->variant] = 0;
+}
+
+static void prune_one(struct rerere_id *id, time_t now,
+ int cutoff_resolve, int cutoff_noresolve)
+{
+ time_t then;
+ int cutoff;
+
+ then = rerere_last_used_at(id);
+ if (then)
+ cutoff = cutoff_resolve;
+ else {
+ then = rerere_created_at(id);
+ if (!then)
+ return;
+ cutoff = cutoff_noresolve;
+ }
+ if (then < now - cutoff * 86400)
+ unlink_rr_item(id);
}
void rerere_gc(struct string_list *rr)
@@ -1129,8 +1129,8 @@ void rerere_gc(struct string_list *rr)
struct string_list to_remove = STRING_LIST_INIT_DUP;
DIR *dir;
struct dirent *e;
- int i, cutoff;
- time_t now = time(NULL), then;
+ int i;
+ time_t now = time(NULL);
int cutoff_noresolve = 15;
int cutoff_resolve = 60;
@@ -1142,25 +1142,32 @@ void rerere_gc(struct string_list *rr)
die_errno("unable to open rr-cache directory");
/* Collect stale conflict IDs ... */
while ((e = readdir(dir))) {
+ struct rerere_dir *rr_dir;
+ struct rerere_id id;
+ int now_empty;
+
if (is_dot_or_dotdot(e->d_name))
continue;
-
- then = rerere_last_used_at(e->d_name);
- if (then) {
- cutoff = cutoff_resolve;
- } else {
- then = rerere_created_at(e->d_name);
- if (!then)
- continue;
- cutoff = cutoff_noresolve;
+ rr_dir = find_rerere_dir(e->d_name);
+ if (!rr_dir)
+ continue; /* or should we remove e->d_name? */
+
+ now_empty = 1;
+ for (id.variant = 0, id.collection = rr_dir;
+ id.variant < id.collection->status_nr;
+ id.variant++) {
+ prune_one(&id, now, cutoff_resolve, cutoff_noresolve);
+ if (id.collection->status[id.variant])
+ now_empty = 0;
}
- if (then < now - cutoff * 86400)
+ if (now_empty)
string_list_append(&to_remove, e->d_name);
}
closedir(dir);
- /* ... and then remove them one-by-one */
+
+ /* ... and then remove the empty directories */
for (i = 0; i < to_remove.nr; i++)
- unlink_rr_item(dirname_to_id(to_remove.items[i].string));
+ rmdir(git_path("rr-cache/%s", to_remove.items[i].string));
string_list_clear(&to_remove, 0);
}
@@ -1177,8 +1184,10 @@ void rerere_clear(struct string_list *merge_rr)
for (i = 0; i < merge_rr->nr; i++) {
struct rerere_id *id = merge_rr->items[i].util;
- if (!has_rerere_resolution(id))
+ if (!has_rerere_resolution(id)) {
unlink_rr_item(id);
+ rmdir(rerere_path(id, NULL));
+ }
}
unlink_or_warn(git_path("MERGE_RR"));
}