[PATCH 8/8] [gdb/dap] Fix race between dap exit and gdb exit

[Tom Tromey]

>>>>> "Tom" == Tom de Vries <tdevries@suse.de> writes:

Tom> +@in_gdb_thread
Tom> +def _on_gdb_exiting(event):
Tom> +    dap_thread_join()

I think it's better not to export dap_thread_join and then import it
here, but instead just add to the event listener exactly where it's
needed.

Tom> +    global _dap_thread_for_gdb_thread
Tom> +    _dap_thread_for_gdb_thread = start_thread("DAP", really_start_dap)
 
You don't even need a new global if you add the listener here.

Tom> +def dap_thread_join():
Tom> +    global _dap_thread_for_gdb_thread
Tom> +    if _dap_thread_for_gdb_thread != None:

None of this will be necessary with the above, but FYI in Python it's
idiomatic to do this comparison with "if blah is not None"

Tom