private static IOConnect IORegisterForSystemPower(IOServiceInterestCallback systemPowerDelegate, NSObject refcon)
{
var ioNotificationPort = System.IntPtr.Zero;
var notifierHandle = System.IntPtr.Zero;
var callback = System.Runtime.InteropServices.Marshal.GetFunctionPointerForDelegate(systemPowerDelegate);
var nativeIOConnect = NativeMethods.IORegisterForSystemPower(refcon.Handle, out ioNotificationPort, callback, out notifierHandle);
var ioConnect = IOKitObject.CreateIOKitObject <IOConnect>(nativeIOConnect);
ioConnect.NotificationPort = new IONotificationPort(ioNotificationPort);
ioConnect.Notifier = IOKitObject.CreateIOKitObject <IOKitObject>(notifierHandle, n => IODeregisterForSystemPower(n));
return(ioConnect);
}
public IOObject AddInterestNotification(IONotificationPort notifyPort, InterestType interestType, InterestCallback callback)
{
ThrowIfDisposed();
var interestTypeString = interestType.GetKey();
IOServiceInterestCallback nativeCallback = (refCon, service, messageType, messageArgument) =>
{
if (service != Handle)
{
return;
}
callback.Invoke(this, messageType, messageArgument);
};
callbackStore.Add(nativeCallback);
IntPtr notification;
var result = IOServiceAddInterestNotification(notifyPort.Handle, Handle, interestTypeString,
nativeCallback, IntPtr.Zero, out notification);
ThrowIfError(result);
return(new IOObject(notification, true));
}
/// <inheritdoc/>
internal override void StartInThread()
{
NotificationPort = new IONotificationPort();
Interop.NativeMethods.CFRunLoopAddSource(CFRunLoop.Current, NotificationPort.RunLoopSource, (NSString)CFRunLoop.ModeDefault);
var systemPowerDelegate = new IOServiceInterestCallback(SystemPowerInterestCallback);
IOConnectionPort = IOConnect.CreateSystemPowerMonitorConnection(systemPowerDelegate, this);
Interop.NativeMethods.CFRunLoopAddSource(CFRunLoop.Current, IOConnectionPort.NotificationPort.RunLoopSource, (NSString)CFRunLoop.ModeCommon);
var servicesDictionary = IOMachPort.GetRS232SerialMatchDictionary();
#if __UNIFIED__
servicesDictionary.DangerousRetain(); // retain an extra time because we're using it twice
#else
servicesDictionary.Retain(); // retain an extra time because we're using it twice
#endif // __UNIFIED__
var publishDelegate = new IONotificationPortCallback(FirstMatchNotification);
var callback = System.Runtime.InteropServices.Marshal.GetFunctionPointerForDelegate(publishDelegate);
IntPtr iterator;
var result = NativeMethods.IOServiceAddMatchingNotification(NotificationPort.Handle, KIOFirstMatchNotification, servicesDictionary.Handle, callback, IntPtr.Zero, out iterator);
System.Diagnostics.Debug.Assert(result == NativeMethods.Success, "IOService.IOKitNotificationPort: Failed to add notification.");
if (result == NativeMethods.Success)
{
PublishNotificationIterator = new IOIterator(iterator);
var terminateDelegate = new IONotificationPortCallback(TerminateNotification);
callback = System.Runtime.InteropServices.Marshal.GetFunctionPointerForDelegate(terminateDelegate);
result = NativeMethods.IOServiceAddMatchingNotification(NotificationPort.Handle, KIOTerminatedNotification, servicesDictionary.Handle, callback, IntPtr.Zero, out iterator);
TerminateNotificationIterator = new IOIterator(iterator);
// The iterators returned when adding the matching notifications must be iterated to
// completion in order to arm the notifications. Otherwise, they will never fire.
PublishNotificationIterator.EnumerateSerialPorts(null);
TerminateNotificationIterator.EnumerateSerialPorts(null);
}
}
/// <summary>
/// Creates the system power monitor connection.
/// </summary>
/// <param name="systemPowerDelegate">System power delegate.</param>
/// <param name="callbackData">Callback data.</param>
/// <returns>The system power monitor connection.</returns>
/// <remarks>The caller must add the <see cref="IOConnect.NotificationPort"/> to a CFRunLoop in order for
/// <paramref name="systemPowerDelegate"/> to be called. When the consumer of the returned IO connection
/// is finished, first, remove the NotificationPort from the CFRunLoop, then call the Dispose() method.</remarks>
public static IOConnect CreateSystemPowerMonitorConnection(IOServiceInterestCallback systemPowerDelegate, NSObject callbackData)
{
return(IORegisterForSystemPower(systemPowerDelegate, callbackData));
}
extern static kern_return_t IOServiceAddInterestNotification(IONotificationPortRef notifyPort, io_service_t service, io_name_t interestType,
IOServiceInterestCallback callback, IntPtr refCon, out io_object_t notification);
public static extern IOKitError IOServiceAddInterestNotification(IntPtr notifyPort, IntPtr service, string interestType, IOServiceInterestCallback callback, DeviceWatcherCallbackReference refCon, ref IntPtr notification);
