github.com/guyezi/gofrontend@v0.0.0-20200228202240-7a62a49e62c0/libgo/go/runtime/internal/atomic/gccgo.go (about)

     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  // Stubs for atomic functions that in gccgo are implemented in C.
     8  
     9  import "unsafe"
    10  
    11  //go:noescape
    12  func Load(ptr *uint32) uint32
    13  
    14  //go:noescape
    15  func Loadp(ptr unsafe.Pointer) unsafe.Pointer
    16  
    17  //go:noescape
    18  func Load8(ptr *uint8) uint8
    19  
    20  //go:noescape
    21  func Load64(ptr *uint64) uint64
    22  
    23  //go:noescape
    24  func LoadAcq(ptr *uint32) uint32
    25  
    26  //go:noescape
    27  func Xadd(ptr *uint32, delta int32) uint32
    28  
    29  //go:noescape
    30  func Xadd64(ptr *uint64, delta int64) uint64
    31  
    32  //go:noescape
    33  func Xadduintptr(ptr *uintptr, delta uintptr) uintptr
    34  
    35  //go:noescape
    36  func Xchg(ptr *uint32, new uint32) uint32
    37  
    38  //go:noescape
    39  func Xchg64(ptr *uint64, new uint64) uint64
    40  
    41  //go:noescape
    42  func Xchguintptr(ptr *uintptr, new uintptr) uintptr
    43  
    44  //go:noescape
    45  func And8(ptr *uint8, val uint8)
    46  
    47  //go:noescape
    48  func Or8(ptr *uint8, val uint8)
    49  
    50  // NOTE: Do not add atomicxor8 (XOR is not idempotent).
    51  
    52  //go:noescape
    53  func Cas64(ptr *uint64, old, new uint64) bool
    54  
    55  //go:noescape
    56  func CasRel(ptr *uint32, old, new uint32) bool
    57  
    58  //go:noescape
    59  func Store(ptr *uint32, val uint32)
    60  
    61  //go:noescape
    62  func Store8(ptr *uint8, val uint8)
    63  
    64  //go:noescape
    65  func Store64(ptr *uint64, val uint64)
    66  
    67  //go:noescape
    68  func StoreRel(ptr *uint32, val uint32)
    69  
    70  // StorepNoWB performs *ptr = val atomically and without a write
    71  // barrier.
    72  //
    73  // NO go:noescape annotation; see atomic_pointer.go.
    74  func StorepNoWB(ptr unsafe.Pointer, val unsafe.Pointer)