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Re: [Qemu-devel] [PATCH v3 0/3] chardev: convert leftover glib APIs to u
From: |
Peter Xu |
Subject: |
Re: [Qemu-devel] [PATCH v3 0/3] chardev: convert leftover glib APIs to use dedicate gcontext |
Date: |
Thu, 4 Jan 2018 21:09:07 +0800 |
User-agent: |
Mutt/1.9.1 (2017-09-22) |
On Thu, Jan 04, 2018 at 06:43:33PM +0800, Peter Xu wrote:
> v3:
> - rename function to qemu_chr_timeout_add_ms() [Stefan]
> - add comment on return code [Stefan]
> - add comment in commit message on why change GSource name [Stefan]
>
> v2:
> - add r-bs
> - fix patch 3 on some s->ms conversion [Marc-André]
>
> There were existing work that tried to allow chardev to be run in a
> dedicated gcontext rather than the default main context/thread.
> Basically that work passed in the correct gcontext during
> g_source_attach(). However, I found something missing along the way,
> that some legacy glib APIs are used by chardev code which take the
> main context as default:
>
> g_timeout_add_seconds
> g_timeout_add
> g_idle_add
Self NAK.
I just noticed something more critical: these calls are still managing
gsources using IDs rather than GSource objects. That should not work,
especially if we want to remove these events using g_source_remove().
That can be fairly dangerous after OOB series merged. I need to use
GSource objects to replace the tag IDs.
I'll prepare another version tomorrow. Sorry for the troublesome.
>
> To fully allow the chardevs to be run in dedicated gcontext, we need
> to convert all these legacy APIs into g_source_attach() calls as well,
> with the correct gcontext passed in.
>
> This series tries to clean the rest of things up.
>
> I picked up patch 1 from monitor-oob series into this series (which is
> a missing of chardev frontend call fix for g_source_attach()), so that
> this series can be a complete fix.
>
> Please review. Thanks,
>
> Peter Xu (3):
> chardev: use backend chr context when watch for fe
> chardev: let g_idle_add() be with chardev gcontext
> chardev: introduce qemu_chr_timeout_add_ms()
>
> chardev/char-fe.c | 2 +-
> chardev/char-pty.c | 16 ++++++++--------
> chardev/char-socket.c | 6 ++++--
> chardev/char.c | 21 +++++++++++++++++++++
> hw/char/terminal3270.c | 7 ++++---
> include/chardev/char.h | 3 +++
> 6 files changed, 41 insertions(+), 14 deletions(-)
>
> --
> 2.14.3
>
--
Peter Xu