On Thu, Aug 23, 2018 at 12:43 AM, <buaa....@gmail.com> wrote:
> package main
>
> import "runtime"
>
> var a int
>
> func calc() {
> for i := 0; i < 10; i++ {
> go func() {
> for {
> runtime.RaceDisable()
> a++
> runtime.RaceEnable()
> }
> }()
>
> }
> }
>
> func main() {
> calc()
> }
>
> go run -race a.go
Thanks for the example. As the docs for runtime.RaceDisable say, it
only applies to synchronization events, like mutex locks. It doesn't
apply to memory accesses.
Ian
> 在 2018年8月22日星期三 UTC+8下午10:34:35，Ian Lance Taylor写道：
>>
>> On Wed, Aug 22, 2018 at 3:25 AM, <nea...@gmail.com> wrote:
>> >
>> > When I copy the sync.Pool's source code in a repo, and using
>> > `//go:linkname`
>> > link those runtime functions manually.
>> > When I run `go test -race`, it reports `DATA RACE`.
>> > But the sync.Pool with the same test case does not report `DATA RACE`.
>> >
>> > Does runtime.RaceDisable not work in non-std library ?
>>
>> It should work. I think you'll have to show us your code.
>>
>> Ian
>
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