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runtime: make evacDst a top level type

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This will reduce duplication when evacuate is specialized.

Change-Id: I34cdfb7103442d3e0ea908c970fb46334b86d5c4
Reviewed-on: https://go-review.googlesource.com/56934
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 18:25:54 -07:00
parent e0b34e7be7
commit 776c33ee5e
1 changed files with 8 additions and 8 deletions
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16
src/runtime/hashmap.go
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@ -1021,6 +1021,14 @@ func bucketEvacuated(t *maptype, h *hmap, bucket uintptr) bool {
return evacuated(b)
}
// evacDst is an evacuation destination.
type evacDst struct {
b *bmap // current destination bucket
i int // key/val index into b
k unsafe.Pointer // pointer to current key storage
v unsafe.Pointer // pointer to current value storage
}
func evacuate(t *maptype, h *hmap, oldbucket uintptr) {
b := (*bmap)(add(h.oldbuckets, oldbucket*uintptr(t.bucketsize)))
newbit := h.noldbuckets()
@ -1028,14 +1036,6 @@ func evacuate(t *maptype, h *hmap, oldbucket uintptr) {
// TODO: reuse overflow buckets instead of using new ones, if there
// is no iterator using the old buckets. (If !oldIterator.)
// evacDst is an evacuation destination.
type evacDst struct {
b *bmap // current destination bucket
i int // key/val index into b
k unsafe.Pointer // pointer to current key storage
v unsafe.Pointer // pointer to current value storage
}
// xy contains the x and y (low and high) evacuation destinations.
var xy [2]evacDst
x := &xy[0]