From 1be1e85115244a3a11f89b75c798823a7dce795f Mon Sep 17 00:00:00 2001 From: Junio C Hamano Date: Tue, 8 Mar 2016 12:11:00 -0800 Subject: 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 --- rerere.c | 87 +++++++++++++++++++++++++++++++++++----------------------------- 1 file changed, 48 insertions(+), 39 deletions(-) (limited to 'rerere.c') 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")); } -- cgit v1.2.3