[Piglit] Test to exercise a race with r600-llvm

[Mathias Fröhlich]

Hi,

This new attached test points to a problem that I observe with initializatiion 
of the llvm backend in todays r600 driver.
The new test concurrently, in two threads, creates a new context compiles a 
simple shader and destroys the context again.
The problem it points out is a race condition we have somewhere in 
initialization of the llvm backend.
But since this is a race condition I see the test only with some probability 
failing, even if the probability is for my test machine > 90%.

please review.

Thanks
Mathias
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 0001-Add-test-for-concurrent-shader-compiler-use.patch
Type: text/x-patch
Size: 5139 bytes
Desc: not available
URL: <http://lists.freedesktop.org/archives/piglit/attachments/20120815/790a95f4/attachment.bin>