public IEnumerator ConcurrentTilesetInsert()
{
ued.LogFormat("about to insert {0} tiles for each tileset", _tileIds.Count);
int rIdCr1 = Runnable.Run(InsertCoroutine(TS_CONCURRENT1, false, _tileIds));
int rIdCr2 = Runnable.Run(InsertCoroutine(TS_CONCURRENT2, false, _tileIds));
int rIdCr3 = Runnable.Run(InsertCoroutine(TS_CONCURRENT3, false, _tileIds));
int rIdCr4 = Runnable.Run(InsertCoroutine(TS_CONCURRENT4, false, _tileIds));
while (Runnable.IsRunning(rIdCr1) || Runnable.IsRunning(rIdCr2) || Runnable.IsRunning(rIdCr3) || Runnable.IsRunning(rIdCr4))
{
yield return(null);
}
}
