Worked on stabilizing multi-threaded DNG decoding in the google/skia repository by addressing a race condition in the DNG SDK initialization process. Used C++ and multithreading techniques to implement a mutex-based guard around the dng_xmp_sdk::InitializeSDK function, ensuring that only one thread performs the initialization while others wait. This approach prevented duplicate initialization calls when multiple threads accessed readDng concurrently, reducing crashes and nondeterministic behavior. The solution was validated through targeted tests, including BitmapFactoryTest and ImageDecoderTest, and underwent code review. This work improved the reliability and stability of Skia’s core image pipeline under concurrent workloads.