[PATCHv6 2/2] gdb: Track the current frame for each thread

[Eli Zaretskii]

> Date: Mon, 4 Jan 2021 15:07:55 +0000
> From: Andrew Burgess <andrew.burgess@embecosm.com>
> Cc: "gdb-patches@sourceware.org" <gdb-patches@sourceware.org>
> 
>     gdb/ChangeLog:
>     
>             * NEWS: Describe new feature.
>             * frame.c (cache_selected_frame_on_thread): New function.
>             (select_frame): Call new function.
>             * frame.h (get_current_frame): Update comment.
>             (get_selected_frame): Update comment.
>             * gdbthread.h (class thread_info) <selected_frame_id>: New
>             member variable.
>             <selected_frame_level>: Likewise.
>             (switch_to_thread): Extra parameter.
>             * thread.c (switch_to_thread_if_alive): Extra parameter, passed to
>             switch_to_thread.
>             (scoped_restore_current_thread::restore): Restore the frame either
>             from the thread, or from the local object.
>             (set_executing_thread): Reset the currently selected frame.
>             (restore_selected_frame_per_thread): New file level static variable.
>             (show_restore_selected_frame_per_thread): New function.
>             (print_thread_info_1): Pass extra parameter to switch_to_thread.
>             (switch_to_thread): Take extra parameter, restore the previous
>             frame if appropriate.
>             (thread_apply_all_command): Pass extra parameter to switch_to_thread.
>             (thread_apply_command): Likewise.
>             (thread_select): Pass extra parameter to switch_to_thread_if_alive.
>             (_initialize_thread): Add new set/show variable.
>     
>     gdb/doc/ChangeLog:
>     
>             * gdb.texinfo (Threads): Add anchor to 'info threads'.  Describe
>             the Frame column of 'info threads' more.  Describe which frame is
>             selected when switching threads, and document the new option for
>             restoring the previously selected frame.
>     
>     gdb/testsuite/ChangeLog:
>     
>             * gdb.threads/restore-selected-frame.c: New file.
>             * gdb.threads/restore-selected-frame.exp: New file.

OK for the documentation parts, thanks.