public static CFMessagePort CreateRemotePort(CFAllocator allocator, string name)
{
if (name == null)
{
throw new ArgumentNullException("name");
}
IntPtr a = allocator == null ? IntPtr.Zero : allocator.Handle;
IntPtr n = NSString.CreateNative(name);
try {
var portHandle = CFMessagePortCreateRemote(a, n);
return(portHandle == IntPtr.Zero ? null : new CFMessagePort(portHandle));
} finally {
NSString.ReleaseNative(n);
}
}
internal static CFMessagePort CreateLocalPort(CFAllocator allocator, string name, CFMessagePortCallBack callback, CFMessagePortContext context)
{
IntPtr a = allocator == null ? IntPtr.Zero : allocator.Handle;
IntPtr n = NSString.CreateNative(name);
bool shouldFreeInfo = false;
var contextProxy = new ContextProxy();
// a GCHandle is needed because we do not have an handle before calling CFMessagePortCreateLocal
// and that will call the RetainProxy. So using this (short-lived) GCHandle allow us to find back the
// original context defined by developer
var shortHandle = GCHandle.Alloc(contextProxy);
if (context != null)
{
if (context.Retain != null)
{
contextProxy.retain = RetainProxy;
}
if (context.Release != null)
{
contextProxy.release = ReleaseProxy;
}
if (context.CopyDescription != null)
{
contextProxy.copyDescription = CopyDescriptionProxy;
}
contextProxy.info = (IntPtr)shortHandle;
lock (messagePortContexts)
messagePortContexts.Add(contextProxy.info, context);
}
try {
var portHandle = CFMessagePortCreateLocal(a, n, messageOutputCallback, ref contextProxy, ref shouldFreeInfo);
// we won't need short GCHandle after the Create call
shortHandle.Free();
// TODO handle should free info
if (portHandle == IntPtr.Zero)
{
return(null);
}
var result = new CFMessagePort(portHandle);
lock (outputHandles)
outputHandles.Add(portHandle, callback);
if (context != null)
{
lock (messagePortContexts) {
messagePortContexts.Remove(contextProxy.info);
CFMessagePortGetContext(portHandle, ref contextProxy);
messagePortContexts.Add(contextProxy.info, context);
}
result.contextHandle = contextProxy.info;
}
return(result);
} finally {
NSString.ReleaseNative(n);
}
}
public static CFMessagePort CreateLocalPort(string name, CFMessagePortCallBack callback, CFAllocator allocator = null)
{
if (callback == null)
{
throw new ArgumentNullException("callback");
}
return(CreateLocalPort(allocator, name, callback, context: null));
}
