GC Problems...

[Simon Levitt]

Hi,

I've tried without much success to find any similar problems to this in the 
list archives.

Recently I've been invovled in a project to use GCJ as a backend for an 
implementation for a COM object. 

The primary development environment is under MinGW/MSYS (Using the latest 
stable versions + newest binutils) on Win2000.

We've been having a number of problems with the garbage collection, most of 
which have been resolved by compiling a recent version (version: 3.5.0 
20040824 experimental) of GCC with USE_GLOBAL_ALLOC defined. (The used 
gc_config.h file is attached). I'm only compiling the static libraries.

The problem exists in both the COM environment we're running under, and the 
simple test case application I'm attaching here, there appears to be a memory 
leak.

Also, unless I explicity call GC (Code in Helper.java), hardly any attempts to 
garbage collect are made at all - and the memory usage increases 
singificantly quicker.

Regardless of whether I create a single or multiple string objects 
(GCTester.java) the memory usage still increases.

Even removing the System.err and System::err calls the memory usage (as 
reported in gc.log) still steadily increases.

If the attached CPP and Java is compiled into an application using the 
following:

gcj -C Helper.java
gcj -c Helper.java
gcjh Helper -classpath .
g++ -o GCTester GCTester.cpp Helper.o -lgcj -ws2_32

Can anyone shed any light on this?

Thanks, in advance,

Simon.,
-- 
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         Simon Levitt, Principal Development Engineer @ WorldPay,
WorldPay Centre, The Science Park, Milton Rd., Cambridge, CB4 0WE, ENGLAND  
   Simon.Levitt@worldpay.com   Ph:+44(0)1223 715151  F:+44(0)1223 715157
------------------------- http://www.worldpay.com/ -----------------------
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