Port Sys_Sleep() to SDL

neo/sys/osx/macosx_sys.mm

@@ -62,10 +62,6 @@ int main(int argc, char *argv[]) {
 
 //===========================================================================
 
-void Sys_Sleep( const int time ) {
-	sleep( time );
-}
-
 void EditorPrintConsole( const char *test ) {
 }
 

neo/sys/posix/posix_main.cpp

@@ -439,22 +439,6 @@ ID_TIME_T Sys_FileTimeStamp(FILE * fp) {
 	return st.st_mtime;
 }
 
-void Sys_Sleep(int msec) {
-	if ( msec < 20 ) {
-		static int last = 0;
-		int now = Sys_Milliseconds();
-		if ( now - last > 1000 ) {
-			Sys_Printf("WARNING: Sys_Sleep - %d < 20 msec is not portable\n", msec);
-			last = now;
-		}
-		// ignore that sleep call, keep going
-		return;
-	}
-	// use nanosleep? keep sleeping if signal interrupt?
-	if (usleep(msec * 1000) == -1)
-		Sys_Printf("usleep: %s\n", strerror(errno));
-}
-
 char *Sys_GetClipboardData(void) {
 	Sys_Printf( "TODO: Sys_GetClipboardData\n" );
 	return NULL;

neo/sys/sys_public.h

@@ -143,11 +143,8 @@ void			Sys_Printf( const char *msg, ... )id_attribute((format(printf,1,2)));
 void			Sys_DebugPrintf( const char *fmt, ... )id_attribute((format(printf,1,2)));
 void			Sys_DebugVPrintf( const char *fmt, va_list arg );
 
-// a decent minimum sleep time to avoid going below the process scheduler speeds
-#define			SYS_MINSLEEP	20
-
 // allow game to yield CPU time
-// NOTE: due to SYS_MINSLEEP this is very bad portability karma, and should be completely removed
+// NOTE: due to SDL_TIMESLICE this is very bad portability karma, and should be completely removed
 void			Sys_Sleep( int msec );
 
 // Sys_Milliseconds should only be used for profiling purposes,

neo/sys/threads.cpp

@@ -42,6 +42,15 @@ static bool			waiting[MAX_TRIGGER_EVENTS] = { };
 static xthreadInfo	*thread[MAX_THREADS] = { };
 static size_t		thread_count = 0;
 
+/*
+==============
+Sys_Sleep
+==============
+*/
+void Sys_Sleep(int msec) {
+	SDL_Delay(msec);
+}
+
 /*
 ==================
 Sys_InitThreads

neo/sys/win32/win_main.cpp

@@ -321,15 +321,6 @@ void Sys_DebugVPrintf( const char *fmt, va_list arg ) {
 	OutputDebugString( msg );
 }
 
-/*
-==============
-Sys_Sleep
-==============
-*/
-void Sys_Sleep( int msec ) {
-	Sleep( msec );
-}
-
 /*
 ==============
 Sys_ShowWindow