Provided by: libsdl3-doc_3.2.26+ds-2_all 

NAME
SDL_SetLinuxThreadPriority - Sets the UNIX nice value for a thread.
SYNOPSIS
#include <SDL3/SDL_system.h>
bool SDL_SetLinuxThreadPriority(Sint64 threadID, int priority);
DESCRIPTION
This uses setpriority() if possible, and RealtimeKit if available.
FUNCTION PARAMETERS
threadID
the Unix thread ID to change priority of.
priority
the new, Unix-specific, priority value.
RETURN VALUE
for more information.
AVAILABILITY
This function is available since SDL 3.2.0.
Simple Directmedia Layer SDL 3.2.26 SDL_SetLinuxThreadPriority(3)