Could it be treated as a reverse engineering? I don't know :)
On 10/25/06, Martin Cordova <[EMAIL PROTECTED]> wrote:
I don't know how it works, but what I can do is try to use headless without XOrg shared libs installed, and then take note of the missing .so modules the IBM JVM complains about). Regards, Martin On 10/25/06, Oleg Khaschansky <[EMAIL PROTECTED]> wrote: > If you mean libxlib, how it could be used without X server? Maybe some > other library (e.g. font library like xft) simply preloads it during > its initialization or tries to connect to the server (XOpenDisplay) to > get some data, fails and uses defaults? > > Anyway, I think, testing on a headless environment will help us to > determine the requirements. > > On 10/25/06, Martin Cordova <[EMAIL PROTECTED]> wrote: > > >> (e.g. for linux we need to exclude all xlib calls, right?). << > > > > How implemented IBM their headless stuff? In their case it's a > > requirement to have XOrg shared libraries installed to have headless > > working. In order distros it was XFree libs. No need for an X server, > > just the libs. > > > > Regards, > > Martin Cordova > > > > > > On 10/25/06, Oleg Khaschansky <[EMAIL PROTECTED]> wrote: > > > > Right, that is my question too. I've seen the general description at > > > > the URL Oleg sent, it's hardly a spec tho'. > > > I don't think that spec for this exists. > > > > > > Another document on this is [1]. It describes what can and what cannot > > > be done in headless mode. But we also have the list of methods which > > > throw HeadlessException (from the API spec). > > > > > > > Presumably it is easier for us to find all the methods that are declared > > > > to throw a HeadlessException, and put in the isHeadless() test right > > > > now, so we can have a compliant headless implementation before the GUI > > > > is completed? > > > This is only a part of a task. We may also need to guard native > > > initialization code which depends on system configuration with > > > isHeadless checks (just skip it in headless mode). And, probably, > > > provide an alternative simplified implementation for some awt code > > > which could be called in headless mode to prevent from falling into > > > hardware-dependent native code (e.g. for linux we need to exclude all > > > xlib calls, right?). > > > > > > [1] http://java.sun.com/developer/technicalArticles/J2SE/Desktop/headless/ > > > > > > On 10/25/06, Tim Ellison <[EMAIL PROTECTED]> wrote: > > > > Martin Cordova wrote: > > > > > Oleg, I just read it, does this mean that all methods that don't need > > > > > to throw the special Headless exception, are ready to work in headless > > > > > mode? > > > > > > > > Right, that is my question too. I've seen the general description at > > > > the URL Oleg sent, it's hardly a spec tho'. > > > > > > > > Presumably it is easier for us to find all the methods that are declared > > > > to throw a HeadlessException, and put in the isHeadless() test right > > > > now, so we can have a compliant headless implementation before the GUI > > > > is completed? > > > > > > > > > If so, we are just a step away for supporting headless? > > > > > > > > well we still have to get all the imageIO, print, font and other code > > > > working that is required in headless mode. > > > > > > > > Regards, > > > > Tim > > > > > > > > -- > > > > > > > > Tim Ellison ([EMAIL PROTECTED]) > > > > > > > > > > > > > > > > > -- > > Dinamica - RADical J2EE framework > > open source, easy and powerful > > http://www.martincordova.com > > > -- Dinamica - RADical J2EE framework open source, easy and powerful http://www.martincordova.com
