What I’m suggesting is that imagine a dev changes that code and has version()
access the request property…
This is why if you are sharing data in a concurrent way you need to be very
careful of all usages.
The safest solution is to use immutable objects - of which the non pointer are.
So saying - just use pointer receivers - woefully underestimates the work to do
shared concurrent code correctly.
> On Nov 15, 2023, at 10:33 AM, Marvin Renich <m...@renich.org> wrote:
>
> * Robert Engels <reng...@ix.netcom.com> [231114 21:55]:
>> Switching to pointer receivers everywhere actually makes this worse. Any
>> access is potentially a data race.
>> It stills seems like this is a compiler issue. There needs to be a way to
>> synchronize the pointer to value copy in conjunction with other
>> synchronization.
>> The only way to do this would be to write your own pointer to value
>> conversion methods that have synchronization.
>
> I don't understand what you are saying. Are you saying that if you take
> the code from Dave Cheney's article, and change the receiver for the
> version method from value to pointer:
>
> func (*RPC) version() int {
>
> that there is still a race in his code? Or are you saying that with
> that change you could add code where the act of calling a method is
> inherently a race? If the latter, can you give an example?
>
> ...Marvin
>
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