Function SDL_SetLinuxThreadPriorityAndPolicy 

pub unsafe extern "C" fn SDL_SetLinuxThreadPriorityAndPolicy(
    threadID: Sint64,
    sdlPriority: c_int,
    schedPolicy: c_int,
) -> bool

Sets the priority (not nice level) and scheduling policy for a thread.

This uses setpriority() if possible, and RealtimeKit if available.

Parameter: threadID the Unix thread ID to change priority of. Parameter: sdlPriority the new SDL_ThreadPriority value. Parameter: schedPolicy the new scheduling policy (SCHED_FIFO, SCHED_RR, SCHED_OTHER, etc…). Returns: true on success or false on failure; call SDL_GetError() for more information.

Thread Safety: It is safe to call this function from any thread.

Available Since: This function is available since SDL 3.2.0.