###### (This is the documentation for SDL3, which is under heavy development and the API is changing! [SDL2](https://wiki.libsdl.org/SDL2/) is the current stable version!) # SDL_SetLinuxThreadPriorityAndPolicy Sets the priority (not nice level) and scheduling policy for a thread. ## Header File Defined in [](https://github.com/libsdl-org/SDL/blob/main/include/SDL3/SDL_system.h) ## Syntax ```c SDL_bool SDL_SetLinuxThreadPriorityAndPolicy(Sint64 threadID, int sdlPriority, int schedPolicy); ``` ## Function Parameters | | | | | ------ | --------------- | ---------------------------------------------------------------------- | | Sint64 | **threadID** | the Unix thread ID to change priority of. | | int | **sdlPriority** | the new [SDL_ThreadPriority](SDL_ThreadPriority) value. | | int | **schedPolicy** | the new scheduling policy (SCHED_FIFO, SCHED_RR, SCHED_OTHER, etc...). | ## Return Value ([SDL_bool](SDL_bool)) Returns [SDL_TRUE](SDL_TRUE) on success or [SDL_FALSE](SDL_FALSE) on failure; call [SDL_GetError](SDL_GetError)() for more information. ## Remarks This uses setpriority() if possible, and RealtimeKit if available. ## Version This function is available since SDL 3.0.0. ---- [CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction), [CategorySystem](CategorySystem)