diff options
| author | Keith Randall <khr@google.com> | 2019-03-25 12:34:27 -0700 |
|---|---|---|
| committer | Keith Randall <khr@golang.org> | 2019-03-25 20:46:35 +0000 |
| commit | db16de920370892b0241d3fa0617dddff2417a4d (patch) | |
| tree | 3a85666fe3b1d1d16dc457ae286e4f133e0c1ce0 /src/runtime/mbitmap.go | |
| parent | 501632339f36e7e836ec94958351cee51ee76461 (diff) | |
| download | go-db16de920370892b0241d3fa0617dddff2417a4d.tar.gz go-db16de920370892b0241d3fa0617dddff2417a4d.zip | |
runtime: remove kindNoPointers
We already have the ptrdata field in a type, which encodes exactly
the same information that kindNoPointers does.
My problem with kindNoPointers is that it often leads to
double-negative code like:
t.kind & kindNoPointers != 0
Much clearer is:
t.ptrdata == 0
Update #27167
Change-Id: I92307d7f018a6bbe3daca4a4abb4225e359349b1
Reviewed-on: https://go-review.googlesource.com/c/go/+/169157
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Diffstat (limited to 'src/runtime/mbitmap.go')
| -rw-r--r-- | src/runtime/mbitmap.go | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/runtime/mbitmap.go b/src/runtime/mbitmap.go index 2f00add83e..6fcdea1538 100644 --- a/src/runtime/mbitmap.go +++ b/src/runtime/mbitmap.go @@ -581,7 +581,7 @@ func (h heapBits) setCheckmarked(size uintptr) { // The pointer bitmap is not maintained for allocations containing // no pointers at all; any caller of bulkBarrierPreWrite must first // make sure the underlying allocation contains pointers, usually -// by checking typ.kind&kindNoPointers. +// by checking typ.ptrdata. // // Callers must perform cgo checks if writeBarrier.cgo. // |