tree 2aa8ad13db3dfc450c3a24436fcc0eab16880463
parent e294137c414404a13728e99e824091d7942aa9fe
author Nicolas Capens <capn@google.com> 1499461276 -0400
committer Nicolas Capens <nicolascapens@google.com> 1502807475 +0000

Fix TLS for platforms without library constructors.

Some platforms don't support constructors that get called when the
shared library gets loaded. This results in the thread-local-storage
key to never be allocated. Instead we can check if it was allocated on
each use. Also prevent creating new 'current' state if it already
exists, and avoid pthreads undefined behavior.

Bug b/25629882

Change-Id: I5e2486f88185150b976d88d0144e4d13a349eb79
Reviewed-on: https://swiftshader-review.googlesource.com/11628
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>