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runtime: use unsafe.Slice in tsip code

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This commit is contained in:
Damian Gryski
2024-10-18 10:25:04 -07:00
committed by Damian Gryski
parent 2f9e39e21c
commit 0dfa57ea04
1 changed files with 2 additions and 22 deletions
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src/runtime/memhash_tsip.go
+2 -22
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@@ -15,23 +15,6 @@ import (
"unsafe" "unsafe"
) )
func ptrToSlice(ptr unsafe.Pointer, n uintptr) []byte {
var p []byte
type _bslice struct {
ptr *byte
len uintptr
cap uintptr
}
pslice := (*_bslice)(unsafe.Pointer(&p))
pslice.ptr = (*byte)(ptr)
pslice.cap = n
pslice.len = n
return p
}
type sip struct { type sip struct {
v0, v1 uint64 v0, v1 uint64
} }
@@ -45,8 +28,7 @@ func (s *sip) round() {
} }
func hash64(ptr unsafe.Pointer, n uintptr, seed uintptr) uint64 { func hash64(ptr unsafe.Pointer, n uintptr, seed uintptr) uint64 {
p := unsafe.Slice((*byte)(ptr), n)
p := ptrToSlice(ptr, n)
k0 := uint64(seed) k0 := uint64(seed)
k1 := uint64(0) k1 := uint64(0)
@@ -117,9 +99,7 @@ func (s *sip32) round() {
} }
func hash32(ptr unsafe.Pointer, n uintptr, seed uintptr) uint32 { func hash32(ptr unsafe.Pointer, n uintptr, seed uintptr) uint32 {
// TODO(dgryski): replace this messiness with unsafe.Slice when we can use 1.17 features p := unsafe.Slice((*byte)(ptr), n)
p := ptrToSlice(ptr, n)
k0 := uint32(seed) k0 := uint32(seed)
k1 := uint32(seed >> 32) k1 := uint32(seed >> 32)