Allocate memory

Wed Feb 13 11:57:00 GMT 2008

Please stop top-posting. It's getting really annoying.
Dimiter Stamenov wrote:
> Thanks you all for your help - the problem really appeared not to be in memory allocation - it works fine. Sorry for this confusion.
>> The problem is in a jar file (poi.jar from apache poi project) - the whole jar is compiled successfully, but the application can not find a class which actually is in the jar file.
>> Do you have any idea how to fix it?
>> The stack trace is:
>> java.lang.NoClassDefFoundError: org.apache.poi.hpsf.SummaryInformation
> at java.lang.Class.initializeClass(MyApp.exe)
> at org.apache.poi.hpsf.PropertySetFactory.create(MyApp.exe)
> at org.apache.poi.POIDocument.getPropertySet(MyApp.exe)
> at org.apache.poi.POIDocument.readProperties(MyApp.exe)
> at org.apache.poi.hwpf.HWPFDocument.<init>(MyApp.exe)
> at org.apache.poi.hwpf.extractor.WordExtractor.<init>(MyApp.exe)
> at org.apache.poi.hwpf.extractor.WordExtractor.<init>(MyApp.exe)

You probably linked this wrongly, but without knowing your link
command we can't say.
Andrew.
>> Thanks
> Dimiter
>>> >-------- ГЋГ°ГЁГЈГЁГГ Г«ГГ® ГЇГЁГ±Г¬Г® --------
> >ГЋГІ: "Boehm, Hans" <hans.boehm@hp.com>
> >ГЋГІГГ®Г±ГГ®: RE: Allocate memory
> >Г„Г®: Dimiter Stamenov <pamir@abv.bg>, "java@gcc.gnu.org" <java@gcc.gnu.org>
> >Г€Г§ГЇГ°Г ГІГҐГГ® ГГ : Г‚ГІГ®Г°ГГЁГЄ, 2008, Г”ГҐГўГ°ГіГ Г°ГЁ 12 23:47:03 EET
> >----------------------------------
> >
> >Both the garbage collector and gcj have been used with much larger heaps, though I'm personally not sure how much of that has been done under Windows.
> >
> >How are you constructing the large strings? How long are the files?
> >
> >It would be good to look at the GC log. One particularly useful piece of information would be the heap size when it's failing.
> >
> >Hans
> >
> >> -----Original Message-----
> >> From: java-owner@gcc.gnu.org [mailto:java-owner@gcc.gnu.org]
> >> On Behalf Of Dimiter Stamenov
> >> Sent: Tuesday, February 12, 2008 12:54 PM
> >> To: java@gcc.gnu.org
> >> Subject: Re: Allocate memory
> >>
> >> So Hans you think that allocating 128 MB is not a problem? Do
> >> you mean that the compiled application should allocate it
> >> automatically at runtime?
> >>
> >> The gcj version is 4.3 on 32-bit Windows XP. I am reading a
> >> number of text files and put their contents in a
> >> HashMap<String, String> (file name, text).
> >>
> >> In fact I need the text to be loaded in memory no matter in what way.
> >>
> >>
> >>
> >> >-------- ГЋГ°ГЁГЈГЁГГ Г«ГГ® ГЇГЁГ±Г¬Г® --------
> >> >ГЋГІ: "Boehm, Hans" <hans.boehm@hp.com>
> >> >ГЋГІГГ®Г±ГГ®: RE: Allocate memory
> >> >Г„Г®: Dimiter Stamenov <pamir@abv.bg>, "java@gcc.gnu.org"
> >> <java@gcc.gnu.org> >Г€Г§ГЇГ°Г ГІГҐГГ® ГГ : Г‚ГІГ®Г°ГГЁГЄ, 2008, Г”ГҐГўГ°ГіГ Г°ГЁ 12
> >> 21:57:46 EET
> >> >----------------------------------
> >> >
> >> >This is a reasonably new version of gcj? On a 32-bit
> >> platform? LinkedList or ArrayList? Windows? Linux?
> >> >
> >> >Certainly allocating 128 MB should not be an issue.
> >> Allocating a single 128MB contiguous object might be an
> >> issue, at least if you do it repeatedly on a 32-bit platform.
> >> >
> >> >You can often get some idea what's going on by defining the
> >> GC_PRINT_STATS environment variable, and looking at the
> >> resulting GC log.
> >> >
> >> >Hans
> >> >
> >> >> -----Original Message-----
> >> >> From: java-owner@gcc.gnu.org
> >> [mailto:java-owner@gcc.gnu.org] >> On Behalf Of Dimiter
> >> Stamenov >> Sent: Tuesday, February 12, 2008 10:58 AM >>
> >> To: java@gcc.gnu.org >> Subject: Re: Allocate memory >> >>
> >> In fact I know very well why it's running out of memory - I
> >> >> must fill a large List which consumes the memory.
> >> >>
> >> >> When I use standard JRE I am starting application with
> >> >> -Xmx128M argument and it is OK, but with gcj I don't know
> >> >> what to do...
> >> >>
> >> >> May be in this case I can not use gcj at all, what do you think?
> >> >>
> >> >>
> >> >> >-------- ГЋГ°ГЁГЈГЁГГ Г«ГГ® ГЇГЁГ±Г¬Г® -------- >> >ГЋГІ: Andrew
> >> Haley <aph@redhat.com> >> >ГЋГІГГ®Г±ГГ®: Re: Allocate memory >>
> >> >Г„Г®: Dimiter Stamenov <pamir@abv.bg> >> >Г€Г§ГЇГ°Г ГІГҐГГ® ГГ :
> >> Г‚ГІГ®Г°ГГЁГЄ, 2008, Г”ГҐГўГ°ГіГ Г°ГЁ 12 19:52:33 EET >>
> >> >----------------------------------
> >> >> >
> >> >> >Dimiter Stamenov wrote:
> >> >> >> OK, but I am getting OutOfMemoryException - so what
> >> could be done?
> >> >> >
> >> >> >Well, it's either really running out of memory or
> >> you've hit a bug.
> >> >> >
> >> >> >> Do you mean that I have to rewrite that part of the
> >> code in C++?
> >> >> >
> >> >> >I wouldn't have thought so. The stack trace should
> >> give >> you an idea why it's >running out of memory.
> >> >> >
> >> >> >Andrew.
> >> >> >
> >> >> >
> >> >> >> >Dimiter Stamenov wrote:
> >> >> >> >> Hi,
> >> >> >> >>
> >> >> >> >> Is there any way in gcj compilation to tell the
> >> >> compiled executable to allocate more memory?
> >> >> >> >
> >> >> >> >> I mean something like -Xmx JVM argument when
> >> running >> a pure Java application.
> >> >> >> >
> >> >> >> >Not that I know of. It's not something you'd need, anyway:
> >> >> >> >our gc doesn't allocate memory in a single block as
> >> >> Sun's JVM >> >does.
> >> >> >
> >> >>
> >> >
> >>
> >