1 // Copyright 2016 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 package atomic 6 7 import "unsafe" 8 9 //go:nosplit 10 //go:noinline 11 func Load(ptr *uint32) uint32 { 12 return *ptr 13 } 14 15 //go:nosplit 16 //go:noinline 17 func Loadp(ptr unsafe.Pointer) unsafe.Pointer { 18 return *(*unsafe.Pointer)(ptr) 19 } 20 21 //go:nosplit 22 //go:noinline 23 func Load64(ptr *uint64) uint64 { 24 return *ptr 25 } 26 27 //go:noinline 28 //go:nosplit 29 func Store(ptr *uint32, val uint32) { 30 *ptr = val 31 } 32 33 //go:noinline 34 //go:nosplit 35 func Store64(ptr *uint64, val uint64) { 36 *ptr = val 37 } 38 39 // NO go:noescape annotation; see atomic_pointer.go. 40 //go:noinline 41 //go:nosplit 42 func StorepNoWB(ptr unsafe.Pointer, val unsafe.Pointer) { 43 *(*uintptr)(ptr) = uintptr(val) 44 } 45 46 //go:noescape 47 func And8(ptr *uint8, val uint8) 48 49 //go:noescape 50 func Or8(ptr *uint8, val uint8) 51 52 // NOTE: Do not add atomicxor8 (XOR is not idempotent). 53 54 //go:noescape 55 func Xadd(ptr *uint32, delta int32) uint32 56 57 //go:noescape 58 func Xadd64(ptr *uint64, delta int64) uint64 59 60 //go:noescape 61 func Xadduintptr(ptr *uintptr, delta uintptr) uintptr 62 63 //go:noescape 64 func Xchg(ptr *uint32, new uint32) uint32 65 66 //go:noescape 67 func Xchg64(ptr *uint64, new uint64) uint64 68 69 //go:noescape 70 func Xchguintptr(ptr *uintptr, new uintptr) uintptr 71 72 //go:noescape 73 func Cas64(ptr *uint64, old, new uint64) bool 74
