Watchpoints in multithreaded programs

[Steve Freeland]

Hello,

What is the status of gdb's support for watchpoint in multithreaded apps? 

The manual states here: http://sources.redhat.com/gdb/current/onlinedocs/gdb_6.html#SEC34 that "With the current watchpoint implementation, GDB
can only watch the value of an expression in a single thread."

However, there's a thread on gdb-patches here from 2004 that seems to indicate that this
limitation was in the process of being eliminated: http://sources.redhat.com/ml/gdb-patches/2004-12/msg00256.html

So... I'm a bit confused.  Is the manual out of date?  Did the "watchthreads" patch never make
it into mainline builds for some reason?

Thanks in advance,
- Steve