On Wed, Feb 27, 2019 at 12:46 PM Serhat Şevki Dinçer <jfcga...@gmail.com> wrote:
>
> I would like to update a counter up to a certain limit atomically, without
> using a channel or mutex. What do you think of the following (equivalent)
> functions for sync/atomic?
>
> func CompareAndInc(*addr, Max) bool {
>
> if *addr < Max {
> *addr++
> return true
> }
> return false
> }
>
> func CompareAndDec(*addr, Min) bool {
>
> if *addr > Min {
> *addr--
> return true
> }
> return false
> }
I think they are too special purpose for sync/atomic. You can write
your own versions using CompareAndSwap.
Ian
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