On Wed, 12 May 1999, John Birrell wrote: > Doug Rabson wrote: > > I've put an initial version of my hack for debugging FreeBSD user threads > > with gdb up on http://www.freebsd.org/~dfr/uthread.diff. Comments would be > > appreciated. > > Is the uniqueid really necessary when the address of the thread structure > is already unique within the process address space? After all, that's > what the thread ID is (a pointer to the malloc'd memory). > > I have the feeling that there needs to be some way to discover if the > version of gdb being used is compatible with the version of libc_r that > the program is linked against. Otherwise we end up with a similar > problem to the all too familiar "struct proc size mismatch".
I didn't want to use the address since it might cause confusion if a thread was freed and then the memory was re-allocated to create a new thread. I thought about the versioning but I don't think it will be a problem in practice since both uthread and gdb will generally be built by a single 'make world'. -- Doug Rabson Mail: d...@nlsystems.com Nonlinear Systems Ltd. Phone: +44 181 442 9037 To Unsubscribe: send mail to majord...@freebsd.org with "unsubscribe freebsd-current" in the body of the message
