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| author | Cuong Manh Le <cuong.manhle.vn@gmail.com> | 2022-12-15 18:14:13 +0700 |
|---|---|---|
| committer | Cuong Manh Le <cuong.manhle.vn@gmail.com> | 2023-01-30 16:00:58 +0000 |
| commit | d42c08a2be456d353a7aca3110edeb9bdb66ebd0 (patch) | |
| tree | 9f53d34cde09be9f62886ab03eea6574b0fa700b /src/runtime | |
| parent | f2a2600860ebcd1b86a0d8b67308da0a3fa673f0 (diff) | |
| download | go-d42c08a2be456d353a7aca3110edeb9bdb66ebd0.tar.xz | |
reflect,runtime: add Value.Clear
Fixes #55002
Change-Id: I7d0f14cc54f67f2769b51d2efafc4ae3714f0e3d
Reviewed-on: https://go-review.googlesource.com/c/go/+/457895
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Keith Randall <khr@google.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Diffstat (limited to 'src/runtime')
| -rw-r--r-- | src/runtime/map.go | 5 | ||||
| -rw-r--r-- | src/runtime/mbarrier.go | 9 |
2 files changed, 14 insertions, 0 deletions
diff --git a/src/runtime/map.go b/src/runtime/map.go index 6179c1e371..3f5817a577 100644 --- a/src/runtime/map.go +++ b/src/runtime/map.go @@ -1403,6 +1403,11 @@ func reflect_maplen(h *hmap) int { return h.count } +//go:linkname reflect_mapclear reflect.mapclear +func reflect_mapclear(t *maptype, h *hmap) { + mapclear(t, h) +} + //go:linkname reflectlite_maplen internal/reflectlite.maplen func reflectlite_maplen(h *hmap) int { if h == nil { diff --git a/src/runtime/mbarrier.go b/src/runtime/mbarrier.go index 46ef42f74d..dbcd4db868 100644 --- a/src/runtime/mbarrier.go +++ b/src/runtime/mbarrier.go @@ -334,6 +334,15 @@ func reflect_typedmemclrpartial(typ *_type, ptr unsafe.Pointer, off, size uintpt memclrNoHeapPointers(ptr, size) } +//go:linkname reflect_typedarrayclear reflect.typedarrayclear +func reflect_typedarrayclear(typ *_type, ptr unsafe.Pointer, len int) { + size := typ.size * uintptr(len) + if writeBarrier.needed && typ.ptrdata != 0 { + bulkBarrierPreWrite(uintptr(ptr), 0, size) + } + memclrNoHeapPointers(ptr, size) +} + // memclrHasPointers clears n bytes of typed memory starting at ptr. // The caller must ensure that the type of the object at ptr has // pointers, usually by checking typ.ptrdata. However, ptr |