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gc: refactor a "call me once" pattern 

Change an idiom we're using to ensure that gc_before_repack() only
does work once (see 62aad1849f ("gc --auto: do not lock refs in the
background", 2014-05-25)) to be more obvious.

Nothing except this function cares about the "pack_refs" and
"prune_reflogs" variables, so let's not leave the reader wondering if
they're being zero'd out for later use somewhere else.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Ævar Arnfjörð Bjarmason 2019-03-15 16:59:54 +01:00 committed by Junio C Hamano
parent e5cdbd5f70
commit cd8eb3a094
1 changed files with 9 additions and 3 deletions
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12
builtin/gc.c
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@ -489,14 +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)