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Both strings are _right there_ for comparing, so we can just set a flag to note the device definitely changed. Also simplified string management further; hotplug thread now makes a copy of the string before releasing the lock if there was a change event, so when the lock releases further events don't see a NULL and assume it's a new device, causing a lot of work to ripple out and decide nothing has changed, until the system stabilizes again. Now, it just does the right thing once.
Simple DirectMedia Layer (SDL) Version 3.0
Simple DirectMedia Layer is a cross-platform development library designed to provide low level access to audio, keyboard, mouse, joystick, and graphics hardware via OpenGL and Direct3D. It is used by video playback software, emulators, and popular games including Valve's award winning catalog and many Humble Bundle games.
More extensive documentation is available in the docs directory, starting with README.md. If you are migrating to SDL 3.0 from SDL 2.0, the changes are extensively documented in README-migration.md.
Enjoy!
Sam Lantinga (slouken@libsdl.org)