[RFA]: Watchpoints per thread patch

[Eli Zaretskii]

> Date: Tue, 19 Oct 2004 19:56:57 -0400
> From: Jeff Johnston <jjohnstn@redhat.com>
> 
> The following patch adds needed support for the ia64 and s390 platforms.  For 
> these platforms, watchpoints need to be inserted / removed on each thread so as 
> to work across all threads.

The patch is fine with me, provided that you take care of the
following minor issues:

> +# Set various watchpoint flags based on host/cpu
> +
> +case "${host}" in
> +ia64-*-*)
> +	gdb_host_watchpoints_per_thread=1

This is not very autoconfish, but I guess there's no better way to
test for this, is there?

> +int
> +thread_switch_and_call (int thread_num, int (*callback) (void *), void *args)

IMHO, the name of this function is misleading; a better name would
something like map_threads or apply_to_all_threads.

> +int
> +insert_watchpoints_for_new_thread (struct thread_info *ti)

This function is only neded if WATCHPOINTS_PER_THREAD is defined, so I
think the function's definition itself should be conditioned by
WATCHPOINTS_PER_THREAD.