7f9021a92f
idiff sometimes locks up while shutting down when the CPU is oversubscribed. While blender does not rely on the idiff tool the tests that run on the CI environment do, which causes tests to occasionally fail due to a timeout. The root cause is a bit complex but can be found on the oiio tracker at https://github.com/OpenImageIO/oiio/issues/3851 This change fixes idiff by : 1- Shutting down the thread pool before the main function exits 2- Have the shutdown wait for the pool threads to actually join, to prevent the OS from forcefully terminating them while they could potentially still be holding a lock. |
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