/// <summary>
/// Polls the supplied items for events
/// </summary>
/// <param name="items">Items to Poll</param>
/// <param name="timeout">Timeout</param>
/// <returns>Number of Poll items with events</returns>
public int Poll(PollItem[] items, long timeout)
{
int sizeOfZPL = Marshal.SizeOf(typeof(ZMQPollItem));
IntPtr offset = IntPtr.Zero;
int rc = 0;
using (DisposableIntPtr itemList = new DisposableIntPtr(sizeOfZPL * items.Length)) {
offset = itemList.Ptr;
foreach (PollItem item in items)
{
Marshal.StructureToPtr(item.ZMQPollItem, offset, false);
offset = new IntPtr(offset.ToInt32() + sizeOfZPL);
}
rc = C.zmq_poll(itemList.Ptr, items.Length, timeout);
if (rc > 0)
{
offset = itemList.Ptr;
for (int index = 0; index < items.Length; index++)
{
items[index].ZMQPollItem = (ZMQPollItem)
Marshal.PtrToStructure(offset, typeof(ZMQPollItem));
offset = new IntPtr(offset.ToInt32() + sizeOfZPL);
}
foreach (PollItem item in items)
{
item.FireEvents();
}
}
else if (rc < 0)
{
throw new Exception();
}
}
return(rc);
}
/// <summary>
/// Set Socket Option
/// </summary>
/// <param name="option">Socket Option</param>
/// <param name="value">Option value</param>
/// <exception cref="ZMQ.Exception">ZMQ Exception</exception>
public void SetSockOpt(SocketOpt option, byte[] value)
{
using (DisposableIntPtr valPtr = new DisposableIntPtr(value.Length)) {
Marshal.Copy(value, 0, valPtr.Ptr, value.Length);
if (C.zmq_setsockopt(ptr, (int)option, valPtr.Ptr, value.Length) != 0)
{
throw new Exception();
}
}
}
/// <summary>
/// Set Socket Option
/// </summary>
/// <param name="option">Socket Option</param>
/// <param name="value">Option value</param>
/// <exception cref="ZMQ.Exception">ZMQ Exception</exception>
public void SetSockOpt(SocketOpt option, long value)
{
int sizeOfValue = Marshal.SizeOf(typeof(long));
using (DisposableIntPtr valPtr = new DisposableIntPtr(sizeOfValue)) {
WriteSizeT(valPtr.Ptr, value);
if (C.zmq_setsockopt(ptr, (int)option, valPtr.Ptr, sizeOfValue) != 0)
{
throw new Exception();
}
}
}
/// <summary>
/// Get the socket option value
/// </summary>
/// <param name="option">Socket Option</param>
/// <returns>Option value</returns>
/// <exception cref="ZMQ.Exception">ZMQ Exception</exception>
public object GetSockOpt(SocketOpt option)
{
object output;
using (DisposableIntPtr len = new DisposableIntPtr(IntPtr.Size)) {
if (option == SocketOpt.IDENTITY)
{
using (DisposableIntPtr val = new DisposableIntPtr(255)) {
WriteSizeT(len.Ptr, 255);
if (C.zmq_getsockopt(ptr, (int)option, val.Ptr, len.Ptr) != 0)
{
throw new Exception();
}
byte[] buffer = new byte[Convert.ToInt32(ReadSizeT(len.Ptr))];
Marshal.Copy(val.Ptr, buffer, 0, buffer.Length);
output = buffer;
}
}
else
{
using (DisposableIntPtr val = new DisposableIntPtr(IntPtr.Size)) {
WriteSizeT(len.Ptr, Marshal.SizeOf(typeof(long)));
if (C.zmq_getsockopt(ptr, (int)option, val.Ptr, len.Ptr) != 0)
{
throw new Exception();
}
//Unchecked casting of uint64 options
if (option == SocketOpt.HWM || option == SocketOpt.AFFINITY ||
option == SocketOpt.SNDBUF || option == SocketOpt.RCVBUF)
{
output = unchecked ((ulong)Marshal.ReadInt64(val.Ptr));
}
else
{
output = Marshal.ReadInt64(val.Ptr);
}
}
}
}
return(output);
}
