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+// Get the number of milliseconds since SDL library initialization.
+//
+// This value wraps if the program runs for more than ~49 days.
+//
+// Returns an unsigned 32-bit value representing the number of milliseconds
+// since the SDL library initialized.
+export @symbol("SDL_GetTicks") fn SDL_GetTicks() u32;
+
+// Get the current value of the high resolution counter.
+//
+// This function is typically used for profiling.
+//
+// The counter values are only meaningful relative to each other. Differences
+// between values can be converted to times by using
+// [[SDL_GetPerformanceFrequency]].
+//
+// Returns the current counter value.
+export @symbol("SDL_GetPerformanceCounter") fn SDL_GetPerformanceCounter() u64;
+
+// Get the count per second of the high resolution counter.
+//
+// Returns a platform-specific count per second.
+export @symbol("SDL_GetPerformanceFrequency") fn SDL_GetPerformanceFrequency() u64;
+
+// Wait a specified number of milliseconds before returning.
+//
+// This function waits a specified number of milliseconds before returning. It
+// waits at least the specified time, but possibly longer due to OS
+// scheduling.
+export @symbol("SDL_Delay") fn SDL_Delay(ms: u32) void;
+
+// TODO: Timers