DispatchSource.VnodeMonitor Class
Definition
Important
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Sources of this type monitor the virtual filesystem nodes for state changes.
public class DispatchSource.VnodeMonitor : CoreFoundation.DispatchSourcetype DispatchSource.VnodeMonitor = class
inherit DispatchSource- Inheritance
- Inheritance
Remarks
var stream = File.Create ("Demo.txt");
// Get the underlying Unix file descriptor
var safeHandle = stream.SafeFileHandle;
IntPtr descriptor = safeHandle.DangerousGetHandle ();
int fileDescriptor = descriptor.ToInt32 ();
var dispatchSource = new DispatchSource.VnodeMonitor (
fileDescriptor,
VnodeMonitorKind.Delete | VnodeMonitorKind.Extend | VnodeMonitorKind.Write,
DispatchQueue.MainQueue
);
dispatchSource.SetRegistrationHandler (() => {
Console.WriteLine ("Vnode monitor registered");
});
dispatchSource.SetEventHandler (() => {
var observedEvents = dispatchSource.ObservedEvents;
Console.WriteLine ("Vnode monitor event for file: {0}", observedEvents);
dispatchSource.Cancel ();
stream.Close ();
});
dispatchSource.SetCancelHandler (() => {
Console.WriteLine (textView, "Vnode monitor cancelled");
});
dispatchSource.Resume ();
Constructors
| DispatchSource.VnodeMonitor(Int32, VnodeMonitorKind, DispatchQueue) |
Creates a VNode monitor for the specified file descriptor to monitor the specified set of events on it. |
| DispatchSource.VnodeMonitor(IntPtr, Boolean) | |
| DispatchSource.VnodeMonitor(IntPtr) | |
| DispatchSource.VnodeMonitor(String, VnodeMonitorKind, DispatchQueue) |
Creates a VNode monitor for the specified file path to monitor the specified set of events on it. |
Properties
| FileDescriptor |
File descriptor that is being monitored |
| Handle | (Inherited from DispatchObject) |
| IsCanceled |
Determine whether the specified source has been canceled. (Inherited from DispatchSource) |
| ObservedEvents |
Events that were observed on the file. |
Methods
| Activate() | (Inherited from DispatchObject) |
| Cancel() |
Asynchronously cancels the dispatch source. (Inherited from DispatchSource) |
| Check() |
Obsolete.
(Inherited from DispatchObject)
|
| Dispose() | (Inherited from DispatchObject) |
| Dispose(Boolean) | |
| Equals(Object) | (Inherited from DispatchObject) |
| GetHashCode() |
Returns the hashcode for this object (Inherited from DispatchObject) |
| InitializeHandle(IntPtr) | (Inherited from NativeObject) |
| Release() | (Inherited from DispatchObject) |
| Resume() |
Resumes the dispatch source. (Inherited from DispatchSource) |
| Retain() | (Inherited from DispatchObject) |
| SetCancelHandler(Action) |
Provides a cancellation handler (Inherited from DispatchSource) |
| SetEventHandler(Action) |
Specified a handler to execute when events are received on the dispatch source. (Inherited from DispatchSource) |
| SetRegistrationHandler(Action) |
Provides a registration handler (Inherited from DispatchSource) |
| SetTargetQueue(DispatchQueue) | (Inherited from DispatchObject) |
| Suspend() |
Suspends the dispatch source. (Inherited from DispatchSource) |