T L,
No: https://github.com/golang/go/issues/19182
Peter
On Friday, July 7, 2017 at 5:31:33 AM UTC, T L wrote:
>
>
>
> On Friday, July 7, 2017 at 3:26:24 AM UTC+8, Lars Seipel wrote:
>>
>> On Thu, Jul 06, 2017 at 12:19:05PM -0700, T L wrote:
>> >
>> > package main
>> >
>> > import "fmt"
>> > import "sync/atomic"
>> >
>> > func main() {
>> > var x int32
>> > atomic.AddInt32(&x, 1)
>> > fmt.Println(atomic.LoadInt32(&x))
>> > }
>>
>> Sure.
>>
>> > Within a single goroutine, the happens-before order is the order
>> > expressed by the program.
>> - https://golang.org/ref/mem
>
>
> Thanks.
>
> Then how about this?
>
> package main
>
> import "fmt"
> import "sync/atomic"
>
> func main() {
> var x, y int32
> go func() {
> atomic.AddInt32(&x, 1)
> atomic.AddInt32(&y, 1)
> }()
>
> if atomic.LoadInt32(&y) == 1 {
> fmt.Println("x =", atomic.LoadInt32(&x)) // always 1 if it is
> printed?
> }
>
> if atomic.LoadInt32(&x) == 0 {
> fmt.Println("y =", atomic.LoadInt32(&y)) // always 0 if it is
> printed?
> }
> }
>
>
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