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| author | Julian Phillips <julian@quantumfyre.co.uk> | 2009-10-25 21:28:12 +0000 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2009-10-27 23:38:46 -0700 |
| commit | b1a01e1c0762d117da7dac009b773f310479be12 (patch) | |
| tree | ac0e72011b930e7dcd5f176d76ef5a0f0301dad0 | |
| parent | 73cf0822b2a4ffa7ad559d1f0772e39718fc7776 (diff) | |
| download | git-b1a01e1c0762d117da7dac009b773f310479be12.tar.gz | |
fetch: Speed up fetch of large numbers of refs
When there are large numbers of refs, calling read_ref for each ref is
inefficent (and infact downright slow) - so instead use for_each_ref
to build up a string list of all the refs that we currently have,
which significantly improves the volume.
Signed-off-by: Julian Phillips <julian@quantumfyre.co.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
| -rw-r--r-- | builtin-fetch.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/builtin-fetch.c b/builtin-fetch.c index a35a6f8cb8..5c7465cfeb 100644 --- a/builtin-fetch.c +++ b/builtin-fetch.c @@ -489,7 +489,8 @@ static int add_existing(const char *refname, const unsigned char *sha1, int flag, void *cbdata) { struct string_list *list = (struct string_list *)cbdata; - string_list_insert(refname, list); + struct string_list_item *item = string_list_insert(refname, list); + item->util = (void *)sha1; return 0; } @@ -615,9 +616,14 @@ static void check_not_current_branch(struct ref *ref_map) static int do_fetch(struct transport *transport, struct refspec *refs, int ref_count) { + struct string_list existing_refs = { NULL, 0, 0, 0 }; + struct string_list_item *peer_item = NULL; struct ref *ref_map; struct ref *rm; int autotags = (transport->remote->fetch_tags == 1); + + for_each_ref(add_existing, &existing_refs); + if (transport->remote->fetch_tags == 2 && tags != TAGS_UNSET) tags = TAGS_SET; if (transport->remote->fetch_tags == -1) @@ -640,8 +646,13 @@ static int do_fetch(struct transport *transport, check_not_current_branch(ref_map); for (rm = ref_map; rm; rm = rm->next) { - if (rm->peer_ref) - read_ref(rm->peer_ref->name, rm->peer_ref->old_sha1); + if (rm->peer_ref) { + peer_item = string_list_lookup(rm->peer_ref->name, + &existing_refs); + if (peer_item) + hashcpy(rm->peer_ref->old_sha1, + peer_item->util); + } } if (tags == TAGS_DEFAULT && autotags) |