mirror of
https://github.com/encounter/SDL.git
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f59b0056d3
"In release 2.0.6, when Linux evdev keyboard support has been moved to a separate source file, a feature was added to disable normal keyboard event processing to prevent "spilling" keystrokes to background virtual console. This feature has one unpleasant side effect: if application fails to call `SDL_Exit` before termination or crashes with fatal signal, console is left in unusable state with keyboard not working and no possibility to switch virtual console. If user has a chance, he can login remotely and restore keyboard with `kbd_mode`, otherwise the only option is to reboot the machine. This patch fixes that problem by intercepting fatal signals (with `sigaction`) and process termination (with `atexit`), to restore keyboard state, if it wasn't properly restored with `SDL_Exit`. The function registered with `atexit` also restores original signal handlers, to prevent leaving invalid handlers after SDL library is unloaded, if it was loaded dynamically with `dlopen`. No signal handlers or `atexit` function are installed if SDL boolean hint `SDL_HINT_NO_SIGNAL_HANDLERS` is `SDL_TRUE`. Additionally, if environment variable `SDL_INPUT_LINUX_KEEP_KBD` exists, keyboard initialization function completely skips disabling keyboard. This can be useful for debugging." Fixes Bugzilla #4193.
Simple DirectMedia Layer
(SDL)
Version 2.0
---
https://www.libsdl.org/
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
Enjoy!
Sam Lantinga (slouken@libsdl.org)