GDB 6.0 and FreeBSD threads

Daniel Eischen eischen at vigrid.com
Mon Mar 29 05:06:51 PST 2004


On Mon, 29 Mar 2004, Niall Douglas wrote:

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> On 28 Mar 2004 at 9:47, Daniel Eischen wrote:
> 
> > No-one has touched uthread support for other GDB's as
> > far as I know.  Most work is going in to our other thread
> > libraries.  There is work trying to get GDB thread support
> > for libpthread, and that should be here by 5.3-release.
> 
> I discovered late last night that libc_r implements only userland 
> threads which seem to have issues with pipes (my code kept hanging 
> inside the pipe i/o). I then discovered there are real system scope 
> threads too, but they're in a different library called libkse.
> 
> You guys could seriously improve the documentation inside the man 
> pages. Please! Just a two line paragraph would have saved me more 
> than a day of work.
> 
> After linking to libkse and finding it really doesn't like coexisting 
> with libc_r, I discovered the libmap.conf trick and it works now. 
> Unfortunately I'm back to square one in that no gdb supports kse 
> threads. This is a major problem as my code is heavily multithreaded.

You'll probably have to wait for gdb support to hit the
tree sometime before 5.3-release.

-- 
Dan Eischen



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