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[Qemu-devel] [RFC PATCH 0/3] io/nbd: AioContext support
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [RFC PATCH 0/3] io/nbd: AioContext support |
Date: |
Fri, 23 Dec 2016 19:26:38 +0100 |
This is RFC because the APIs it uses (aio_co_schedule/aio_co_wake) do
not exist yet in master, but it should be enough for a first review of
the QIOChannel API concepts and to give an idea of their usage.
It makes qio_channel_yield aware of AioContexts by adding a new
API qio_channel_set_aio_context, and it lets separate coroutines
use qio_channel_yield for reading vs. writing.
The last patch rewrites the NBD client's I/O management to use the
new infrastructure (and I think the logic here was first proposed
years ago by Stefan). The benefit is that the new version does not
block if the server writes a partial reply header, and is also a
bit smaller.
Paolo
Paolo Bonzini (3):
io: add methods to set I/O handlers on AioContext
io: make qio_channel_yield aware of AioContexts
nbd: do not block on partial reply header reads
block/nbd-client.c | 108 ++++++++++++++++++++-------------------------------
include/io/channel.h | 41 +++++++++++++++++++
io/channel-socket.c | 16 +++++---
io/channel-tls.c | 12 ++++++
io/channel-watch.c | 6 +++
io/channel.c | 87 +++++++++++++++++++++++++++++++----------
6 files changed, 178 insertions(+), 92 deletions(-)
--
2.9.3
- [Qemu-devel] [RFC PATCH 0/3] io/nbd: AioContext support,
Paolo Bonzini <=