trylock           496 modules/core/include/opencv2/core/utility.hpp     bool trylock();
trylock           920 modules/core/src/system.cpp bool Mutex::trylock() { return impl->trylock(); }
trylock           384 modules/videoio/src/cap_ffmpeg_impl.hpp     bool trylock();
trylock           492 modules/videoio/src/cap_ffmpeg_impl.hpp bool ImplMutex::trylock() { return impl->trylock(); }