Multithreading via GCJ

Multithreading via GCJ

[dornenteufel]

Hello,

the last days I worked a little bit with the GCJ compiler and my Java programs. I have two question and hope that someone has the right answers for me :-).

1.) How does the scheduling change when I compile my program via gcj? Is there a special scheduling algorithm or will there only be the OS scheduling used?

2.) Everytime I compile my programs, I get multiple times this warning
"GC Warning: Thread stack pointer 0x7ffac960 out of range, pushing everything"
What does that mean? Additionally I have the problem that my program crash with settings which work under eclipse wonderfully.

Greetings

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Re: Multithreading via GCJ

[Andrew Haley]

On 02/24/2012 05:31 PM, dornenteufel@gmx.net wrote:
> the last days I worked a little bit with the GCJ compiler and my
> Java programs. I have two question and hope that someone has the
> right answers for me :-).
> 
> 1.) How does the scheduling change when I compile my program via
> gcj? Is there a special scheduling algorithm or will there only be
> the OS scheduling used?

The OS scheduling is used.  This is generally true for Java
implementations these days.

> 2.) Everytime I compile my programs, I get multiple times this
> warning "GC Warning: Thread stack pointer 0x7ffac960 out of range,
> pushing everything" What does that mean? Additionally I have the
> problem that my program crash with settings which work under eclipse
> wonderfully.

This means that the garbage collector isn't finding the threads.  This
is a bug.

Andrew.