File size: 2,612 Bytes
f7a7bb1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 | // Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package atomic
import "unsafe"
// Export some functions via linkname to assembly in sync/atomic.
//
//go:linkname Load
//go:linkname Loadp
//go:linkname Load64
//go:nosplit
//go:noinline
func Load(ptr *uint32) uint32 {
return *ptr
}
//go:nosplit
//go:noinline
func Loadp(ptr unsafe.Pointer) unsafe.Pointer {
return *(*unsafe.Pointer)(ptr)
}
//go:nosplit
//go:noinline
func Load8(ptr *uint8) uint8 {
return *ptr
}
//go:nosplit
//go:noinline
func Load64(ptr *uint64) uint64 {
return *ptr
}
//go:nosplit
//go:noinline
func LoadAcq(ptr *uint32) uint32 {
return *ptr
}
//go:nosplit
//go:noinline
func LoadAcq64(ptr *uint64) uint64 {
return *ptr
}
//go:nosplit
//go:noinline
func LoadAcquintptr(ptr *uintptr) uintptr {
return *ptr
}
//go:noescape
func Store(ptr *uint32, val uint32)
//go:noescape
func Store8(ptr *uint8, val uint8)
//go:noescape
func Store64(ptr *uint64, val uint64)
// NO go:noescape annotation; see atomic_pointer.go.
func StorepNoWB(ptr unsafe.Pointer, val unsafe.Pointer)
//go:nosplit
//go:noinline
func StoreRel(ptr *uint32, val uint32) {
*ptr = val
}
//go:nosplit
//go:noinline
func StoreRel64(ptr *uint64, val uint64) {
*ptr = val
}
//go:nosplit
//go:noinline
func StoreReluintptr(ptr *uintptr, val uintptr) {
*ptr = val
}
//go:noescape
func And8(ptr *uint8, val uint8)
//go:noescape
func Or8(ptr *uint8, val uint8)
// NOTE: Do not add atomicxor8 (XOR is not idempotent).
//go:noescape
func And(ptr *uint32, val uint32)
//go:noescape
func Or(ptr *uint32, val uint32)
//go:noescape
func And32(ptr *uint32, val uint32) uint32
//go:noescape
func Or32(ptr *uint32, val uint32) uint32
//go:noescape
func And64(ptr *uint64, val uint64) uint64
//go:noescape
func Or64(ptr *uint64, val uint64) uint64
//go:noescape
func Anduintptr(ptr *uintptr, val uintptr) uintptr
//go:noescape
func Oruintptr(ptr *uintptr, val uintptr) uintptr
//go:noescape
func Xadd(ptr *uint32, delta int32) uint32
//go:noescape
func Xadd64(ptr *uint64, delta int64) uint64
//go:noescape
func Xadduintptr(ptr *uintptr, delta uintptr) uintptr
//go:noescape
func Xchg(ptr *uint32, new uint32) uint32
//go:nosplit
func Xchg8(addr *uint8, v uint8) uint8 {
return goXchg8(addr, v)
}
//go:noescape
func Xchg64(ptr *uint64, new uint64) uint64
//go:noescape
func Xchguintptr(ptr *uintptr, new uintptr) uintptr
//go:noescape
func Cas64(ptr *uint64, old, new uint64) bool
//go:noescape
func CasRel(ptr *uint32, old, new uint32) bool
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