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Re: compiler runs out of memory

Hi, see below ...

David Crescent wrote:
> I'm using a Windows 2000 machine with 512 Megs of memory, over 330 of
> which are free, and I keep getting java.lang.OutOfMemoryError when I try
> to run the simplec compiler generated by SableCC. I know this is a memory
> intensive application, but surely 330 Megabytes is enough to construct an
> AST from a very small simplec program. I also tried the postfix example,
> and although that compiler doesn't run out of memory, the usage is over
> half of what's available. I have the feeling something is wrong since the
> statement being compiled is 2+3! Any suggestions as to what is wrong would
> be very helpful.
> Thanks,
> Dave

Please check the manual of the java program.
Or start java without any options, or with the -X option.
Then you get a short help summary.
Java does not use all your memory as long as you do not tell it to do
There is a -X option to set the minimum memory to aquire during start up
and the maximum memory allowed to aquire during running.

Setting that to a high enough value should work.

On my system(jdk1.4) its :
    -Xms<size>        set initial Java heap size
    -Xmx<size>        set maximum Java heap size


Angelo Schneider         OOAD/UML         Angelo.Schneider@oomentor.de
Putlitzstr. 24       Patterns/FrameWorks          Fon: +49 721 9812465
76137 Karlsruhe           C++/JAVA                Fax: +49 721 9812467