gc: refactor a "call me once" pattern

diff --git a/builtin/gc.c b/builtin/gc.c
index 020f725acc40f413c49f812ea0e6aac0153d097c..ae716a00d4a3ab039051e27ee13bf41845c0bfe1 100644 (file)
--- a/builtin/gc.c
+++ b/builtin/gc.c
@@ -156,9 +156,7 @@ static int too_many_loose_objects(void)
        int auto_threshold;
        int num_loose = 0;
        int needed = 0;
-
-       if (gc_auto_threshold <= 0)
-               return 0;
+       const unsigned hexsz_loose = the_hash_algo->hexsz - 2;
 
        dir = opendir(git_path("objects/17"));
        if (!dir)
@@ -166,8 +164,8 @@ static int too_many_loose_objects(void)
 
        auto_threshold = DIV_ROUND_UP(gc_auto_threshold, 256);
        while ((ent = readdir(dir)) != NULL) {
-               if (strspn(ent->d_name, "0123456789abcdef") != 38 ||
-                   ent->d_name[38] != '\0')
+               if (strspn(ent->d_name, "0123456789abcdef") != hexsz_loose ||
+                   ent->d_name[hexsz_loose] != '\0')
                        continue;
                if (++num_loose > auto_threshold) {
                        needed = 1;
@@ -491,14 +489,20 @@ static int report_last_gc_error(void)
 
 static void gc_before_repack(void)
 {
+       /*
+        * We may be called twice, as both the pre- and
+        * post-daemonized phases will call us, but running these
+        * commands more than once is pointless and wasteful.
+        */
+       static int done = 0;
+       if (done++)
+               return;
+
        if (pack_refs && run_command_v_opt(pack_refs_cmd.argv, RUN_GIT_CMD))
                die(FAILED_RUN, pack_refs_cmd.argv[0]);
 
        if (prune_reflogs && run_command_v_opt(reflog.argv, RUN_GIT_CMD))
                die(FAILED_RUN, reflog.argv[0]);
-
-       pack_refs = 0;
-       prune_reflogs = 0;
 }
 
 int cmd_gc(int argc, const char **argv, const char *prefix)