From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Mon, 22 Oct 2012 12:55:22 +0000 (-0400)
Subject: wfcqueue: introduce nonblocking API
X-Git-Tag: v0.8.0~177
X-Git-Url: http://git.liburcu.org/?a=commitdiff_plain;h=47215721095cf47e110f113d26f9e61514405a4c;hp=47215721095cf47e110f113d26f9e61514405a4c;p=userspace-rcu.git

wfcqueue: introduce nonblocking API

Introduce nonblocking API in wfcqueue, allowing RT threads to try to
dequeue, splice, or iterate on spliced queues without blocking: the
caller needs to handle CDS_WFCQ_WOULDBLOCK return value (or nonzero
return value for splice).

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
CC: Paul McKenney <paulmck@linux.vnet.ibm.com>
CC: Lai Jiangshan <laijs@cn.fujitsu.com>
---