[PATCH v2 0/2] Increase amount of data for monitor to read

From: Andrey Shinkevich via <qemu-devel@nongnu.org>
To: qemu-block@nongnu.org
Cc: qemu-devel@nongnu.org, marcandre.lureau@redhat.com,
	pbonzini@redhat.com, kwolf@redhat.com, mreitz@redhat.com,
	armbru@redhat.com, dgilbert@redhat.com, den@openvz.org,
	vsementsov@virtuozzo.com, andrey.shinkevich@virtuozzo.com
Subject: [PATCH v2 0/2] Increase amount of data for monitor to read
Date: Mon, 23 Nov 2020 18:44:32 +0300	[thread overview]
Message-ID: <1606146274-246154-1-git-send-email-andrey.shinkevich@virtuozzo.com> (raw)

The subject was discussed here:
https://lists.gnu.org/archive/html/qemu-devel/2017-05/msg00206.html

This series is a solution for the issue with QMP monitor buffered input.
A JSON little parser is introduced to separate QMP commands read from the
input buffer so that incoming requests do not overwhelm the monitor queue.
A side effect raised in the test #247 was managed in the first patch.
It may be considered as a workaround. Any sane fix suggested will be
appreciated.

Note:
This series goes after the Vladimir's one:
'[PATCH v3 00/25] backup performance: block_status + async"'
To make the test #129 passed, the following patch should be applied first:
'[PATCH v3 01/25] iotests: 129 don't check backup "busy"'.

v2:
  02: The static JSONthrottle object was made a member of the Chardev structure.
      The fd_chr_read functions were merged.
      The monitor thread synchronization was added to protect the input queue
      from overflow.

Andrey Shinkevich (2):
  iotests: add another bash sleep command to 247
  monitor: increase amount of data for monitor to read

 chardev/char-fd.c          | 35 +++++++++++++++++++++++++++++++++--
 chardev/char-socket.c      | 42 +++++++++++++++++++++++++++++++++++++++---
 chardev/char.c             | 41 +++++++++++++++++++++++++++++++++++++++++
 include/chardev/char.h     | 15 +++++++++++++++
 monitor/monitor.c          |  2 +-
 tests/qemu-iotests/247     |  2 ++
 tests/qemu-iotests/247.out |  1 +
 7 files changed, 132 insertions(+), 6 deletions(-)

-- 
1.8.3.1