From: David Gibson <david@gibson.dropbear.id.au>
Date: Fri, 3 Jun 2016 08:41:59 +0000 (+1000)
Subject: altstack: Consolidate thread-local variables
X-Git-Url: http://git.ozlabs.org/?a=commitdiff_plain;h=2da0271f9700ecb1bd402918e5f7ae7b27c2b142;hp=2da0271f9700ecb1bd402918e5f7ae7b27c2b142;p=ccan

altstack: Consolidate thread-local variables

altstack uses a number of __thread variables to track internal state.  This
allows altstack to be thread-safe, although it's still not re-entrant.
This patch gathers all these variables into a single per-thread state
structure.  This makes it easy to see at a glance what the whole of the
required state is, and thereby easier to reason about correctness of
changes to the implementation.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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