github.com/aloncn/graphics-go@v0.0.1/src/runtime/internal/atomic/atomic_386.go (about)

     1  // Copyright 2009 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  // +build 386
     6  
     7  package atomic
     8  
     9  import "unsafe"
    10  
    11  //go:nosplit
    12  //go:noinline
    13  func Load(ptr *uint32) uint32 {
    14  	return *ptr
    15  }
    16  
    17  //go:nosplit
    18  //go:noinline
    19  func Loadp(ptr unsafe.Pointer) unsafe.Pointer {
    20  	return *(*unsafe.Pointer)(ptr)
    21  }
    22  
    23  //go:nosplit
    24  func Xadd64(ptr *uint64, delta int64) uint64 {
    25  	for {
    26  		old := *ptr
    27  		if Cas64(ptr, old, old+uint64(delta)) {
    28  			return old + uint64(delta)
    29  		}
    30  	}
    31  }
    32  
    33  //go:noescape
    34  func Xadduintptr(ptr *uintptr, delta uintptr) uintptr
    35  
    36  //go:nosplit
    37  func Xchg64(ptr *uint64, new uint64) uint64 {
    38  	for {
    39  		old := *ptr
    40  		if Cas64(ptr, old, new) {
    41  			return old
    42  		}
    43  	}
    44  }
    45  
    46  //go:noescape
    47  func Xadd(ptr *uint32, delta int32) uint32
    48  
    49  //go:noescape
    50  func Xchg(ptr *uint32, new uint32) uint32
    51  
    52  //go:noescape
    53  func Xchguintptr(ptr *uintptr, new uintptr) uintptr
    54  
    55  //go:noescape
    56  func Load64(ptr *uint64) uint64
    57  
    58  //go:noescape
    59  func And8(ptr *uint8, val uint8)
    60  
    61  //go:noescape
    62  func Or8(ptr *uint8, val uint8)
    63  
    64  // NOTE: Do not add atomicxor8 (XOR is not idempotent).
    65  
    66  //go:noescape
    67  func Cas64(ptr *uint64, old, new uint64) bool
    68  
    69  //go:noescape
    70  func Store(ptr *uint32, val uint32)
    71  
    72  //go:noescape
    73  func Store64(ptr *uint64, val uint64)
    74  
    75  // NO go:noescape annotation; see atomic_pointer.go.
    76  func Storep1(ptr unsafe.Pointer, val unsafe.Pointer)