Date: Mon, 10 Oct 2005 13:09:32 +0300 From: Tommi Kyntola <tommi.kyntola@ray.fi> To: sdl@libsdl.org Subject: [SDL] [RFC] get_ticks broken on linux It uses gettimeofday to calculate the timedifference. Gettimeofday returns current time which is seldom monotonous. This breaks SDL timer subsystem. (time callbacks and all that get borked when the time difference ms is suddenly ~ 2^32) I posted a message about this earlier but got no response. Some thoughts on this matter would be appreciated. (Or even an explanation for the lack of interest.) A patch below would use the posix timers that have been around since posix 93 and do provide a good source of monotonous time on linux boxes (and on few others too). The following patch is also availabe at: http://www.hut.fi/u/tkyntola/SDL-1.2.9-clockfix.patch It's against 1.2.9, but I can easily rediffit against the cvs branch is needed. cheers, Tommi Kyntola tommi.kyntola@ray.fi

/* Test program to compare the compile-time version of SDL with the linked
   version of SDL
*/

#include <stdio.h>
#include <stdlib.h>

#include "SDL.h"

int main(int argc, char *argv[])
{
	SDL_version compiled;

	/* Initialize SDL */
	if ( SDL_Init(0) < 0 ) {
		fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError());
		exit(1);
	}
#ifdef DEBUG
	fprintf(stderr, "SDL initialized\n");
#endif
#if SDL_VERSION_ATLEAST(1, 2, 0)
	printf("Compiled with SDL 1.2 or newer\n");
#else
	printf("Compiled with SDL older than 1.2\n");
#endif
	SDL_VERSION(&compiled);
	printf("Compiled version: %d.%d.%d\n",
			compiled.major, compiled.minor, compiled.patch);
	printf("Linked version: %d.%d.%d\n",
			SDL_Linked_Version()->major,
			SDL_Linked_Version()->minor,
			SDL_Linked_Version()->patch);
	SDL_Quit();
	return(0);
}