When I do a "new" in a struct constructor to assign to a member variable of this struct, what do i write in the same struct destructor to free the memory ?

On Saturday, 15 May 2021 at 16:52:10 UTC, Alain De Vos wrote:

If you used new the garbage collector is responsible for it.

On Saturday, 15 May 2021 at 16:53:04 UTC, Adam D. Ruppe wrote:

Can I send a kind message to the garbage collector to please free that speficic memory at that time specified ?

Feature request, a function old which does the opposite of new, allowing deterministic,real-time behavior and memory conservation.

On Saturday, 15 May 2021 at 17:55:17 UTC, Alain De Vos wrote:

You can use object.destroy to destruct, and GC.free to free memory allocated with new.

Thanks, good idea but,
It does not initiate a GC cycle or free any GC memory.

On Saturday, 15 May 2021 at 18:15:24 UTC, Dennis wrote:

Specifically you wanna do:

.destroy(*ptr);
GC.free(GC.addrOf(ptr));

Sorry free does , indeed.

On Saturday, 15 May 2021 at 17:55:17 UTC, Alain De Vos wrote:

You're best off doing malloc+free if you want complete control though.

I'll try first the first tip of Adam, here the code,

import std.stdio:writeln;
import core.memory: GC;
void myfun(){
class C{
	int[10000] x;
	}//class C
	
struct S {
	C c=null;
	@disable this();

	this(int dummy) {
		c=new C();
		writeln("Constructor");
		};//Constructor

	~this(){
		writeln("Destructor");
		.destroy(c);
		void * address=GC.addrOf(cast(void *)c);
		GC.free(address);
		};//destructor
}//struct S
S mys=S(0);
};//myfun()

void main(){
	myfun();
};//main