garbage collection take too much time to execute....

[- -]

Hi All again,
I success to build a new compilation environment!! (I took less time I thought)
With the new gcj the problem not happens!!!.

The new compiler I used is:

$ gcj --version
gcj.exe (GCC) 4.3.0 20080305 (alpha-testing) mingw-20080502
Copyright (C) 2008 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.


The snippet's time is about 15 milliseconds now. So the problem is in previous releases but we not know the reason or the patch correcting it.

thanks you a lot for help
x10


--- On Wed, 6/18/08, - - <decuplo> wrote:

> Subject: Re: garbage collection take too much time to execute....

> Date: Wednesday, June 18, 2008, 3:33 PM
> I agree that 3.4.5 is old but it is the "current
> release" of mingw,
> also cygwin is using 3.4.5 is its "stable"
> releases....
> As said before I'm not familiary with gcj and mingw and
> I'd like to
> use for now (at least to understand the limitation and
> boundary of gcj and swt) stable or official releases.
> 
> May I ask if someone could compile and run my simple
> snippet in order to see if in the latest release is present
> the same problem?
> This is the command to compile:
> 
> gcj
> --classpath="org.eclipse.swt.win32.win32.x86_3.3.3.v3349.jar"
> -I. -c -o snippet.o snippet.java
> 
> and after:
> 
> gcj -o  snippet.exe  --static -mwindows --main=snippet
> ./snippet.o -L. -lswt
> 
> 
> I'm  trying to donwload the alfa release of mingw it
> contains gcj release 4.3.0 may be tomorrow I'll success
> to compile...
> 
> 
> Thanks you a lot for any support and hits..
> x10
> 
> 
> --- On Wed, 6/18/08, Andrew Haley wrote:
> 
> 
> > Subject: Re: garbage collection take too much time to
> execute....
> 
> 
> > Date: Wednesday, June 18, 2008, 12:36 PM
> > - - wrote:
> > > Hi,
> > > I found a strange behaviour on code generated by
> gcj
> > when compare its output with code generated by
> eclipse.
> > > 
> > > Mainly the code generated by gcj  take too much
> time
> > to  perform a memory  garbage collection (about 5
> seconds)
> > instead of only 15 milliseconds of byte code generated
> by
> > eclipse.
> > > 
> > > The problem seems to happens when there are
> canvas and
> > transform operations. I attach a simple snippet code
> that
> > write a vertical text on canvas in order to reproduce
> the
> > behaviour.
> > > 
> > > The gcj compiler I use is:
> > > $ gcj --version
> > > gcj.exe (GCC) 3.4.5 (mingw-vista special r3)
> > > Copyright (C) 2004 Free Software Foundation, Inc.
> > > This is free software; see the source for copying
> > conditions.  There is NO
> > > warranty; not even for MERCHANTABILITY or FITNESS
> FOR
> > A PARTICULAR PURPOSE.
> > >  
> > > with the swt version 3349: 
> > "swt-gdip-win32-3349.dll"  and 
> > "swt-win32-3349.dll"
> > >  
> > > I'm new of this discussion list, hoping not
> annoy
> > you. It is a trouble or it is just a mistake on usage
> of
> > transform?
> > > thanks you,
> > 
> > I addition to what Hans said, I have to tell you that
> gcj
> > 3.4.x is so old
> > that it's very unlikely that anyone will want to
> fix
> > any problems.
> > 
> > Andrew.