public static int Select(ref PhpArray read, ref PhpArray write, ref PhpArray except, int tv_sec, int tv_usec)
{
if ((read == null || read.IsEmpty()) && (write == null || write.IsEmpty()))
return except == null ? 0 : except.Count;
var readResult = new PhpArray();
var writeResult = new PhpArray();
var i = 0;
var timer = Stopwatch.StartNew();
var waitTime = tv_sec*1000 + tv_usec;
while (true)
{
if (read != null)
{
readResult.Clear();
foreach (var item in read)
{
var stream = item.Value as PhpStream;
if (stream == null)
continue;
if (stream.CanReadWithoutLock())
readResult.Add(item.Key, item.Value);
}
}
if (write != null)
{
writeResult.Clear();
foreach (var item in write)
{
var stream = item.Value as PhpStream;
if (stream == null)
continue;
if (stream.CanWriteWithoutLock())
writeResult.Add(item.Key, item.Value);
}
}
if (readResult.Count > 0 || writeResult.Count > 0 || except.Count > 0)
break;
i++;
if (timer.ElapsedMilliseconds > waitTime)
break;
if (i < 10)
Thread.Yield();
else
Thread.Sleep(Math.Min(i, waitTime));
}
read = readResult;
write = writeResult;
return read.Count + write.Count + (except == null ? 0 : except.Count);
}
