This is the mail archive of the
gcc-help@gcc.gnu.org
mailing list for the GCC project.
Re: [gcj] Priority setting
- From: NightStrike <nightstrike at gmail dot com>
- To: "Andrew Haley" <aph-gcc at littlepinkcloud dot com>
- Cc: gcc-help at gcc dot gnu dot org
- Date: Thu, 1 Nov 2007 13:17:52 -0400
- Subject: Re: [gcj] Priority setting
- References: <b609cb3b0710182352p3ebc08f7h38521e37a65ad731@mail.gmail.com> <18200.33305.749211.240739@zebedee.pink>
On 10/19/07, Andrew Haley <aph-gcc@littlepinkcloud.com> wrote:
> NightStrike writes:
> > Does gcj support setting priorities for threads in a java process?
>
> Yes, it does. It passes the priority down to the underlying thread system.
What is the underlying thread system? Does it incorporate pthreads,
or some other thing?
> > Also, is garbage collection preemptible?
>
> You'll have to explain what you mean by that.
In a Sun virtual machine environment, garbage collection can run at
any arbitrary time, and there is nothing that the application can do
to prevent this. In the case of timing-critical applications, the
user is at a loss, and thus there can be no determinism in that
environment. I am looking to see how well gcj can perform as an
avenue for real time deterministic java applications.