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runtime: tiny refactor in evacuate

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Since oldbucket == h.nevacuate, we can just increment h.nevacuate here.
This removes oldbucket from scope, which will be useful shortly.

Change-Id: I70f81ec3995f17845ebf5d77ccd20ea4338f23e6
Reviewed-on: https://go-review.googlesource.com/56932
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Reviewed-by: Avelino <t@avelino.xxx>
Reviewed-by: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Josh Bleecher Snyder 2017-08-17 10:24:13 -07:00
parent b5c4211159
commit 43d4c9f4f1
1 changed files with 1 additions and 1 deletions
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2
src/runtime/hashmap.go
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@ -1140,7 +1140,7 @@ func evacuate(t *maptype, h *hmap, oldbucket uintptr) {
// Advance evacuation mark
if oldbucket == h.nevacuate {
h.nevacuate = oldbucket + 1
h.nevacuate++
// Experiments suggest that 1024 is overkill by at least an order of magnitude.
// Put it in there as a safeguard anyway, to ensure O(1) behavior.
stop := h.nevacuate + 1024