Re: set_weak_flag() for objects?

Weak references are resolved (i.e. objects which only have weak
references are destructed) only if 1) the gc runs or 2) when a mapping
is rehashed. This means that in your example the object is only
destructed when the gc runs. In your situation I would recommend doing
something like this:

class FOO {
	private mixed _id;
	
	mixed `id() {
		return _id || this;
	}
}

Hope that helps.

Arne

On 09/21/16 12:14, Stephen R. van den Berg wrote:
> Tried some more, not even the workarounds work as expected:
> 
> class NoRef {
>   void create() {
>     werror("Created NoRef\n");
>   }
> 
>   void destroy() {
>     werror("Destructed NoRef\n");
>   }
> }
> 
> class Ref {
>   private mixed id;
> 
>   void create() {
>     id = this;
>     werror("Created Ref\n");
>   }
> 
>   void destroy() {
>     werror("Destructed Ref\n");
>   }
> }
> 
> class WRef {
>   private array id;
> 
>   void create() {
>     id = ({0});
>     set_weak_flag(id, Pike.WEAK);
>     id[0] = this;
>     set_weak_flag(id, Pike.WEAK);
>     werror("Created WRef %O\n", get_weak_flag(id));
>   }
> 
>   void destroy() {
>     werror("Destructed WRef\n");
>   }
> }
> 
> int main(int argc, array(string) argv) { 
>   object a;
>   a = WRef(); a = 0;
>   a = NoRef(); a = 0;
>   a = Ref(); a = 0;
>   werror("Finished\n");
>   return 0;
> }
> 
> Any ideas?
>