Re: [Qemu-devel] [PATCH V10 00/15] monitor: support sub command group in auto completion and help

[Luiz Capitulino <lcapitulino@redhat.com>]

On Tue, 27 Aug 2013 20:38:12 +0800
Wenchao Xia <xiawenc@linux.vnet.ibm.com> wrote:

> This series make auto completion and help functions works normal for sub
> command, by using reentrant functions. In order to do that, global variables
> are not directly used in those functions any more. With this series, cmd_table
> is a member of structure Monitor so it is possible to create a monitor with
> different command table now, auto completion will work in that monitor. In
> short, "info" is not treated as a special case now, this series ensure help
> and auto complete function works normal for any sub command added in the future.
> 
> Patch 5 replaced cur_mon with rs->mon, it is safe because:
> monitor_init() calls readline_init() which initialize mon->rs, result is
> mon->rs->mon == mon. Then qemu_chr_add_handlers() is called, which make
> monitor_read() function take *mon as its opaque. Later, when user input,
> monitor_read() is called, where cur_mon is set to *mon by "cur_mon = opaque".
> If qemu's monitors run in one thread, then later in readline_handle_byte()
> and readline_comletion(), cur_mon is actually equal to rs->mon, in another
> word, it points to the monitor instance, so it is safe to replace *cur_mon
> in those functions.
> 
> Thanks for Luiz and Eric for reviewing.

Applied to the qmp branch, thanks.

Btw, I'm assuming that the patches that contain Eric's reviewed-by didn't
change since he reviewed them. Personally, I don't think it's right to carry
reviewed-bys when the patch changes, even if it's something small or
obvious.