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

SDL_GetTicks64

Get the number of milliseconds since SDL library initialization.

Header File

Defined in SDL_timer.h, but apps should only #include "SDL.h"!

Syntax

Uint64 SDL_GetTicks64(void);

Return Value

Returns an unsigned 64-bit value representing the number of milliseconds since the SDL library initialized.

Remarks

Note that you should not use the SDL_TICKS_PASSED macro with values returned by this function, as that macro does clever math to compensate for the 32-bit overflow every ~49 days that SDL_GetTicks() suffers from. 64-bit values from this function can be safely compared directly.

For example, if you want to wait 100 ms, you could do this:

const Uint64 timeout = SDL_GetTicks64() + 100;
while (SDL_GetTicks64() < timeout) {
    // ... do work until timeout has elapsed
}

Version

This function is available since SDL 2.0.18.

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CategoryAPI, CategoryAPIFunction

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