| SDL_CPUPauseInstruction(3) | SDL3 FUNCTIONS | SDL_CPUPauseInstruction(3) |
SDL_CPUPauseInstruction - A macro to insert a CPU-specific "pause" instruction into the program.
Defined in SDL3/SDL_atomic.h
#include "SDL3/SDL.h"
#define SDL_CPUPauseInstruction() DoACPUPauseInACompilerAndArchitectureSpecificWay
This can be useful in busy-wait loops, as it serves as a hint to the CPU as to the program's intent; some CPUs can use this to do more efficient processing. On some platforms, this doesn't do anything, so using this macro might just be a harmless no-op.
Note that if you are busy-waiting, there are often more-efficient approaches with other synchronization primitives: mutexes, semaphores, condition variables, etc.
This macro is safe to use from any thread.
This macro is available since SDL 3.2.0.
| SDL 3.2.10 | Simple Directmedia Layer |