type Foo struct {
sync.RWMutex
data map[string]bool
}
o := &Foo{}
o.Lock()
o.data[i] = true
o.Unlock()
elsewhere ....
o.RLock()
v := o.data[i]
o.RUnlock()
On Mon, Oct 3, 2016 at 11:55 AM <a...@cpu.host> wrote:
>
> Which is correct?
>
> o.Lock()
> o.data[i] = true
> o.Unlock()
>
> or
>
> o.Lock()
> i.RLock()
> o.data[i] = true
> i.RUnlock()
> o.Unlock()
>
> The latter actually seems to help high contention R/W operations on a very
> large map according to the guy in my team who was working on the problem,
> but I would have thought the former example is correct.
>
> Thanks for your advice.
>
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