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| author | Austin Clements <austin@google.com> | 2020-03-20 11:37:54 -0400 |
|---|---|---|
| committer | Austin Clements <austin@google.com> | 2020-03-20 16:05:35 +0000 |
| commit | d965bb613086cd780cf73418bcdeaef50a9afc55 (patch) | |
| tree | d57632acdcb73de11dafae0b3db55d58fd9cb2ae /src/runtime/malloc.go | |
| parent | ab5a40c5e3162a565b26de4b1e7595f7922ba761 (diff) | |
| download | go-d965bb613086cd780cf73418bcdeaef50a9afc55.tar.gz go-d965bb613086cd780cf73418bcdeaef50a9afc55.zip | |
runtime: use divRoundUp
There are a handful of places where the runtime wants to round up the
result of a division. We just introduced a helper to do this. This CL
replaces all of the hand-coded round-ups (that I could find) with this
helper.
Change-Id: I465d152157ff0f3cad40c0aa57491e4f2de510ad
Reviewed-on: https://go-review.googlesource.com/c/go/+/224385
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Diffstat (limited to 'src/runtime/malloc.go')
| -rw-r--r-- | src/runtime/malloc.go | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/runtime/malloc.go b/src/runtime/malloc.go index 483ea0aee5..346d7f4742 100644 --- a/src/runtime/malloc.go +++ b/src/runtime/malloc.go @@ -1035,9 +1035,9 @@ func mallocgc(size uintptr, typ *_type, needzero bool) unsafe.Pointer { } else { var sizeclass uint8 if size <= smallSizeMax-8 { - sizeclass = size_to_class8[(size+smallSizeDiv-1)/smallSizeDiv] + sizeclass = size_to_class8[divRoundUp(size, smallSizeDiv)] } else { - sizeclass = size_to_class128[(size-smallSizeMax+largeSizeDiv-1)/largeSizeDiv] + sizeclass = size_to_class128[divRoundUp(size-smallSizeMax, largeSizeDiv)] } size = uintptr(class_to_size[sizeclass]) spc := makeSpanClass(sizeclass, noscan) |