| commit | 613a0e52ea11c4496e3e154de192486a18eac2e4 | [log] [tgz] |
|---|---|---|
| author | Jeff King <peff@peff.net> | Fri May 19 02:12:12 2017 -0400 |
| committer | Junio C Hamano <gitster@pobox.com> | Sat May 20 18:18:45 2017 +0900 |
| tree | ba35570dbd632ef85686276574abf025a0487296 | |
| parent | ac5bbc02b8c3781d517f1414655270b3fa38b028 [diff] |
ref-filter: resolve HEAD when parsing %(HEAD) atom If the user asks to display (or sort by) the %(HEAD) atom, ref-filter has to compare each refname to the value of HEAD. We do so by resolving HEAD fresh when calling populate_value() on each ref. If there are a large number of refs, this can have a measurable impact on runtime. Instead, let's resolve HEAD once when we realize we need the %(HEAD) atom, allowing us to do a simple string comparison for each ref. On a repository with 3000 branches (high, but an actual example found in the wild) this drops the best-of-five time to run "git branch >/dev/null" from 59ms to 48ms (~20% savings). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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