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e08d5239b6
If one thread is reading and another closes that socket, the close blocks waiting for the read to abort cleanly. This ensures that Ruby is totally done with the file descriptor _BEFORE_ we tell the OS to close and potentially re-use it. When the read is correctly terminated, the close should be unblocked. That currently works if closing is happening on a thread, but if it's happening on a fiber with a fiber scheduler, it does NOT work. This patch ensures that if the close happened in a fiber scheduled thread, that the scheduler is notified that the fiber is unblocked. [Bug #20723]