On Monday, 5 March 2018 at 18:57:01 UTC, Steven Schveighoffer
wrote:
On 3/5/18 1:35 PM, Robert M. Münch wrote:
If I use VisualD and add a watch on myObj, I don't see
anything just a "identifier myObj is undefined". Not sure if
this is because of some threads running (using the D RX
framework).
Can't answer your visual D questions...
So, some questions:
1. Are myMemb1..N TLS or __gshared as well?
No, they are on the heap. Only the reference is __gshared. But
effectively it is __gshared, since you can reach those items
via the global `myObj`.
2. How to best implement a simple global to keep track of
values (with support for threads)?
shared is the best mechanism, and you don't have to make it a
class, it can be a struct.
This is only if you are using it as POD (plain old data). If
you want to have methods, shared kind of sucks.
But this at least tells the type system that it's shared
between threads. __gshared does not, it just sticks it in
global space, but pretends it's not shared data.
-Steve
Can __gshared be used instead of static in the singleton pattern?
I, comming from C++, ignorantly, have never used _gshared so I
went to static instead of (being static also means thread-safe,
as far I know)...
