[antlr-interest] java.lang.OutOfMemoryError: Java heap space

[Diehl, Matthew J]

I removed the DEC_OCTET and IPV6_ADDRESS, and it worked fine.  With
either of them it ran into the same problems again.  Maybe check these
two out.

Matt

-----Original Message-----
From: antlr-interest-bounces at antlr.org
[mailto:antlr-interest-bounces at antlr.org] On Behalf Of Terence Parr
Sent: Tuesday, June 05, 2007 12:04 PM
To: ANTLR mail-list
Subject: Re: [antlr-interest] java.lang.OutOfMemoryError: Java heap
space

Hmm...there is supposed to be a fail safe in their bad times out if  
it takes too long to build a DFA. is the grammar very big?

  perhaps you guys can e-mail me or grammars separately and I can try  
them out.

Ter
On Jun 5, 2007, at 11:57 AM, Diehl, Matthew J wrote:

> Lol, yeah, I tried your code with a limit of 1490M in ANTLRWorks  
> 1.0.2,
> and it got up to 1450M and just froze.  It steadily climbed to 1450MB,
> too.  There's some kind've loop in there.
>
> -----Original Message-----
> From: antlr-interest-bounces at antlr.org
> [mailto:antlr-interest-bounces at antlr.org] On Behalf Of Terence Parr
> Sent: Tuesday, June 05, 2007 11:51 AM
> To: ANTLR mail-list
> Subject: Re: [antlr-interest] java.lang.OutOfMemoryError: Java heap
> space
>
>
> On Jun 5, 2007, at 11:18 AM, Wincent Colaiuta wrote:
>
>> I'm trying to develop a parser for wiki markup and part of that
>> requires the recognition of URI tokens according to RFC 3986
>> (<http://www.ietf.org/rfc/rfc3986.txt>). The internal structure of
>> the URI isn't of any interest to me, I just want to get a token for
>> each URI, so I'm doing all this in the lexer.
>>
>> For testing purposes, I'm doing this first in a separate grammar,
>> which you can see here:
>>
>>   <http://pastie.textmate.org/68006>
>>
>> Basically this is the grammar from the RFC, but converted from the
>> ABNF used in that document (the ABNF is itself described in <http://
>> www.ietf.org/rfc/rfc2234.txt>) to use ANTLR's EBNF notation, and
>> then with some minor tweaks to eliminate ANTLRWorks warnings about
>> ambiguity or analysis problems. As far as I can tell, however, the
>> grammar matches the description in the RFC.
>>
>> When I try to pipe this through ANTLR (v3 final) I get this:
>>
>>   Exception in thread "main" java.lang.OutOfMemoryError: Java heap
>> space
>>
>> I tried cranking up the heap size, 256 MB, 512 MB, 768 MB and so  
>> on...
>>
>>   java -Xms32m -Xmx2048m org.antlr.Tool RFC3986.g
>>
>> But to no avail... I got up to almost a gig and a half before swap
>> start thrashing itself to death and I had to kill the ANTLR
>> process. The funny thing is the grammar check works fine in
>> ANTLRWorks (no warnings printed to the console), it has no problems
>> showing me syntax diagrams, producing rule dependency graphs, or
>> handling input that I pass in via the interpreter.
>
> That is really really strange. Are you sure that the commandline
> version is v3.0?
>
> Ter