Heap memory limit?

bearophile bearophileHUGS at lycos.com
Tue Feb 23 05:36:04 PST 2010


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).

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

Bye,
bearophile



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