Steve, --- Steve Wampler <[EMAIL PROTECTED]> wrote:
> Hi David, > > DAVID GAMEY wrote: > >... > > Steve, > > > > Just a hunch as this sounds strangely familiar. > Can > > you determine how many strings you're creating and > > concatenating? > > > > I ran into a problem some years back where I was > > returning map(c,s1,s2) where c was a 1 character > > string. For each character I would do this 9 > times > > creating 9 new strings. As I was concatenating > the > > result with the previous function a character at a > > time, it got pathelogical. Even for a few hundred > > characters of message I overflowed the Icon GC > > counter. > > Hmmm, *that* is interesting. I do create a *lot* of > temporary strings. But the GC shouldn't see most > of them as the GC *should* only be following > referenced links and I'm not getting any errors or > crash, so an internal overflow seems unlikely. > However, I haven't come up with any other > explanation, > so... > I don't think it works that way. If I do: s2 := "" while s2 ||:= f(read()) where f creates a new string, say map to force lower case, then read() creates a string, f creates a new string right after it (no space saving optimization). And concatention does the real damage, since now the entire string is recopied to the end of the area. Think about this on a file of 1M records! L := [] while put(L,f(read())) s2 := "" every s2 ||:= !L works much better. > Thanks for the info. If I can figure out a way to > test this, I will! > > -Steve > > > -- > Steve Wampler -- [EMAIL PROTECTED] > The gods that smiled on your birth are now laughing > out loud. > > > ------------------------------------------------------- > SF.Net email is Sponsored by the Better Software > Conference & EXPO > September 19-22, 2005 * San Francisco, CA * > Development Lifecycle Practices > Agile & Plan-Driven Development * Managing Projects > & Teams * Testing & QA > Security * Process Improvement & Measurement * > http://www.sqe.com/bsce5sf > _______________________________________________ > Unicon-group mailing list > Unicon-group@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/unicon-group > ------------------------------------------------------- SF.Net email is Sponsored by the Better Software Conference & EXPO September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf _______________________________________________ Unicon-group mailing list Unicon-group@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/unicon-group
