• Timothee Cour via Digitalmars-d-learn (7/7) Aug 12 2014 dmd 2.066(rc) generates warning: 'Deprecation: Read-modify-write operati...
• anonymous (8/17) Aug 12 2014 I think yes.

Timothee Cour via Digitalmars-d-learn <digitalmars-d-learn puremagic.com> writes:

dmd 2.066(rc) generates warning: 'Deprecation: Read-modify-write operations
are not allowed for shared variables. Use core.atomic.atomicOp!"-="(a, 1)
instead.' for following code:

synchronized {
  ++a;
}

Is that correct given that it's inside synchronized?

"anonymous" <anonymous example.com> writes:

On Tuesday, 12 August 2014 at 10:01:46 UTC, Timothee Cour via
Digitalmars-d-learn wrote:
 dmd 2.066(rc) generates warning: 'Deprecation: 
 Read-modify-write operations
 are not allowed for shared variables. Use 
 core.atomic.atomicOp!"-="(a, 1)
 instead.' for following code:

 synchronized {
   ++a;
 }

 Is that correct given that it's inside synchronized?

I think yes.

Only this specific block is synchronized (only one thread can run
it at a time). Other accesses of `a` elsewhere are not
synchronized with this one.

If you know that this `synchronized` block is enough to make it
safe, you can cast shared away.