App on L4Re

Adam Lackorzynski adam at
Wed Nov 28 23:59:48 CET 2012


On Wed Nov 28, 2012 at 12:44:04 +0800, OSDepend wrote:
> >To add to what Björn already mentioned: You are free to use whatever you
> >like but for that you need to have an understanding on the options. L4Re
> >is an offer that significantly reduces complexity for developing native
> >L4 applications. For example, look at l4/pkg/hello/server/src/main.c,
> >the "Hello World" greeting. This is a native L4 application, you do not
> >need Linux to run it. However, L4Re, among many more things, makes it
> >possible that this program is so common to you and you immediately
> >understand what it is doing. But if you like you can also work directly
> >on the kernel's interfaces only. However, then you are likely starting
> >to develop an operating system layer before starting your application.
> >Adam
> Thank you for your help. What i really care about is how well the L4Re
> is providing. Because i have a willing to port a search engine or a
> hadoop framework on L4Re to see if i can gain much more performance
> benifit.  In L4Re, you have already present uclibc and pthread for
> programmer. But it seems like that I need to build the application
> (hello world) with the L4Re, and after that i can boot the system and
> run the app.

Yes, that's the current workflow. Usually we use for example Qemu to
launch and run systems on our laptops. Physical systems are usually
booted via network.

> Can i just build and run my applications on L4Re after the
> L4Re+Fiasco.OS has been boot? Is there any tools developed to dynamic
> build and load applications? (i'm not refereing to the Ned which inits
> and loads compiled apps.)

Indeed, there's no ready-to-use solution for that.

Adam                 adam at

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