Provided by: libsdl3-doc_3.2.8+ds-1_all 

NAME
SDL_Condition - A means to block multiple threads until a condition is satisfied.
HEADER FILE
Defined in SDL3/SDL_mutex.h
SYNOPSIS
#include "SDL3/SDL.h" typedef struct SDL_Condition SDL_Condition;
DESCRIPTION
Condition variables, paired with an SDL_Mutex , let an app halt multiple threads until a condition has occurred, at which time the app can release one or all waiting threads. Wikipedia has a thorough explanation of the concept: https://en.wikipedia.org/wiki/Condition_variable
AVAILABILITY
This struct is available since SDL 3.2.0. Simple Directmedia Layer SDL 3.2.8 SDL_Condition(3type)