SDL Wiki
(This is the legacy documentation for stable SDL2, the current stable version; SDL3 is the current development version.)


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


int SDL_LinuxSetThreadPriorityAndPolicy(Sint64 threadID, int sdlPriority, int schedPolicy);

Function Parameters

threadID The Unix thread ID to change priority of.
sdlPriority The new SDL_ThreadPriority value.
schedPolicy The new scheduling policy (SCHED_FIFO, SCHED_RR, SCHED_OTHER, etc...)

Return Value

Returns 0 on success, or -1 on error.


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


This function is available since SDL 2.0.18.


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