Heap memory limit?

[Justin Johansson]

Hi bearophile,

bearophile wrote:
> The Java VM has a limit of the amount of memory it allocates from the heap. So is it useful to add a way to specify a similar limit for D2 programs (especially ones made by safe module)? This limit can be given to the D GC heap (and maybe to the C heap too).

Can you please explain why you think this is useful?

> This limit can just be a compile-time constant given to the compiler, this produces a binary that has a limit of 200 MB of heap:
> dmd -mlimit=200mb foo.d
> The situation gets less simple if you want to change such limit after the program is already compiled, I don't know of simple ways to do it. Maybe a second program can be used for that:
> gclimiter -mlimit=100mb foo.exe

Assuming the idea is useful, why would you have to be a compiler option
rather than, say, a linker option?

Regards,
Justin