public override void ViewDidDisappear(bool animated)
{
base.ViewDidDisappear(animated);
if (dispatchSource != null)
{
dispatchSource.Cancel();
}
}
public override void ViewWillDisappear(bool animated)
{
base.ViewWillDisappear(animated);
if (testFileStream != null)
{
testFileStream.Dispose();
}
if (dispatchSource != null)
{
dispatchSource.Cancel();
dispatchSource.Dispose();
}
}
void TestReadMonitor()
{
NSUrl fileURL = TestFileUrl;
File.WriteAllText(fileURL.Path, "Roses are red");
var stream = File.OpenRead(fileURL.Path);
int fileDescriptor = GetFileDescriptor(stream);
dispatchSource = new CoreFoundation.DispatchSource.ReadMonitor(fileDescriptor, DispatchQueue.MainQueue);
dispatchSource.SetRegistrationHandler(() => {
PrintResult(textView, "Read monitor registered");
});
dispatchSource.SetEventHandler(() => {
PrintResult(textView, string.Format("Read monitor: {0} was opened in read mode", fileURL.LastPathComponent));
dispatchSource.Cancel();
stream.Close();
});
dispatchSource.SetCancelHandler(() => {
PrintResult(textView, "Read monitor cancelled");
});
dispatchSource.Resume();
}
void StartWriteMonitor()
{
NSUrl fileURL = TestFileUrl;
var stream = File.Create(fileURL.Path);
int fileDescriptor = GetFileDescriptor(stream);
dispatchSource = new DispatchSource.WriteMonitor(fileDescriptor, DispatchQueue.MainQueue);
dispatchSource.SetRegistrationHandler(() => {
PrintResult(textView, "Write monitor registered");
});
dispatchSource.SetEventHandler(() => {
string message = string.Format("Write monitor: {0} was opened in write mode", fileURL.LastPathComponent.ToString());
PrintResult(textView, message);
dispatchSource.Cancel();
stream.Close();
});
dispatchSource.SetCancelHandler(() => {
PrintResult(textView, "Write monitor cancelled");
});
dispatchSource.Resume();
}
void StartVnodeMonitor()
{
NSUrl fileURL = TestFileUrl;
var stream = File.Create(fileURL.Path);
int fileDescriptor = GetFileDescriptor(stream);
dispatchSource = new DispatchSource.VnodeMonitor(fileDescriptor,
VnodeMonitorKind.Delete | VnodeMonitorKind.Extend | VnodeMonitorKind.Write,
DispatchQueue.MainQueue
);
dispatchSource.SetRegistrationHandler(() => {
PrintResult(textView, "Vnode monitor registered");
});
dispatchSource.SetEventHandler(() => {
var observedEvents = ((DispatchSource.VnodeMonitor)dispatchSource).ObservedEvents;
string message = string.Format("Vnode monitor event for {0}: {1}", fileURL.LastPathComponent, observedEvents.ToString());
PrintResult(textView, message);
dispatchSource.Cancel();
stream.Close();
});
dispatchSource.SetCancelHandler(() => {
PrintResult(textView, "Vnode monitor cancelled");
});
dispatchSource.Resume();
}
void TestReadMonitor()
{
NSUrl fileURL = TestFileUrl;
int fileDescriptor = 0;
using (var stream = new FileStream(fileURL.Path, FileMode.OpenOrCreate, FileAccess.Read, FileShare.None)) {
fileDescriptor = GetFileDescriptor(stream);
}
dispatchSource = new DispatchSource.ReadMonitor(fileDescriptor, DispatchQueue.MainQueue);
dispatchSource.SetRegistrationHandler(() => {
PrintResult(textView, "Read monitor registered");
});
dispatchSource.SetEventHandler(() => {
PrintResult(textView, string.Format("Read monitor: {0} was opened in read mode", fileURL.LastPathComponent));
dispatchSource.Cancel();
});
dispatchSource.SetCancelHandler(() => {
PrintResult(textView, "Read monitor cancelled");
});
dispatchSource.Resume();
}
public override void ViewWillDisappear(bool animated)
{
base.ViewWillDisappear(animated);
dispatchSource.Cancel();
dispatchSource.Dispose();
dispatchSource = null;
}
private void CancelDispatchSource()
{
if (dispatchSource != null)
{
dispatchSource.Cancel();
dispatchSource.Dispose();
dispatchSource = null;
}
}
void StartMemoryMonitor()
{
dispatchSource = new DispatchSource.MemoryPressure(
MemoryPressureFlags.Critical | MemoryPressureFlags.Warn | MemoryPressureFlags.Normal,
DispatchQueue.MainQueue);
dispatchSource.SetRegistrationHandler(() => {
PrintResult(textView, "Memory monitor registered");
});
dispatchSource.SetEventHandler(() => {
var pressureLevel = ((DispatchSource.MemoryPressure)dispatchSource).PressureFlags;
PrintResult(textView, string.Format("Memory worning of level: {0}", pressureLevel));
tableView.UserInteractionEnabled = true;
dispatchSource.Cancel();
});
dispatchSource.SetCancelHandler(() => {
PrintResult(textView, "Memory monitor cancelled");
});
dispatchSource.Resume();
}
void TestReadMonitor ()
{
NSUrl fileURL = TestFileUrl;
int fileDescriptor = 0;
using (var stream = new FileStream (fileURL.Path, FileMode.OpenOrCreate, FileAccess.Read, FileShare.None)) {
fileDescriptor = GetFileDescriptor (stream);
}
dispatchSource = new DispatchSource.ReadMonitor (fileDescriptor, DispatchQueue.MainQueue);
dispatchSource.SetRegistrationHandler (() => {
PrintResult (textView, "Read monitor registered");
});
dispatchSource.SetEventHandler (() => {
PrintResult (textView, string.Format ("Read monitor: {0} was opened in read mode", fileURL.LastPathComponent));
dispatchSource.Cancel ();
});
dispatchSource.SetCancelHandler (() => {
PrintResult (textView, "Read monitor cancelled");
});
dispatchSource.Resume ();
}
void StartWriteMonitor ()
{
NSUrl fileURL = TestFileUrl;
var stream = new FileStream (fileURL.Path, FileMode.OpenOrCreate, FileAccess.Write, FileShare.None);
int fileDescriptor = GetFileDescriptor (stream);
dispatchSource = new DispatchSource.WriteMonitor (fileDescriptor, DispatchQueue.MainQueue);
dispatchSource.SetRegistrationHandler (() => {
PrintResult (textView, "Write monitor registered");
});
dispatchSource.SetEventHandler (() => {
string message = string.Format ("Write monitor: {0} was opened in write mode", fileURL.LastPathComponent);
PrintResult (textView, message);
dispatchSource.Cancel ();
stream.Close ();
});
dispatchSource.SetCancelHandler (() => {
PrintResult (textView, "Write monitor cancelled");
});
dispatchSource.Resume ();
}
void StartMemoryMonitor ()
{
dispatchSource = new DispatchSource.MemoryPressure (
MemoryPressureFlags.Critical | MemoryPressureFlags.Warn | MemoryPressureFlags.Normal,
DispatchQueue.MainQueue);
dispatchSource.SetRegistrationHandler (() => {
PrintResult (textView, "Memory monitor registered");
});
dispatchSource.SetEventHandler (() => {
var pressureLevel = ((DispatchSource.MemoryPressure)dispatchSource).PressureFlags;
PrintResult (textView, string.Format ("Memory worning of level: {0}", pressureLevel));
tableView.UserInteractionEnabled = true;
dispatchSource.Cancel ();
});
dispatchSource.SetCancelHandler (() => {
PrintResult (textView, "Memory monitor cancelled");
});
dispatchSource.Resume ();
}
void StartVnodeMonitor ()
{
NSUrl fileURL = TestFileUrl;
testFileStream = File.Create (fileURL.Path);
int fileDescriptor = GetFileDescriptor (testFileStream);
dispatchSource = new DispatchSource.VnodeMonitor (fileDescriptor,
VnodeMonitorKind.Delete | VnodeMonitorKind.Extend | VnodeMonitorKind.Write,
DispatchQueue.MainQueue
);
dispatchSource.SetRegistrationHandler (() => {
PrintResult (textView, "Vnode monitor registered");
});
dispatchSource.SetEventHandler (() => {
var observedEvents = ((DispatchSource.VnodeMonitor)dispatchSource).ObservedEvents;
string message = string.Format ("Vnode monitor event for {0}: {1}", fileURL.LastPathComponent, observedEvents);
PrintResult (textView, message);
dispatchSource.Cancel ();
testFileStream.Close ();
});
dispatchSource.SetCancelHandler (() => {
PrintResult (textView, "Vnode monitor cancelled");
});
dispatchSource.Resume ();
}
void TestReadMonitor ()
{
NSUrl fileURL = TestFileUrl;
File.WriteAllText (fileURL.Path, "Roses are red");
var stream = File.OpenRead (fileURL.Path);
int fileDescriptor = GetFileDescriptor (stream);
dispatchSource = new CoreFoundation.DispatchSource.ReadMonitor (fileDescriptor, DispatchQueue.MainQueue);
dispatchSource.SetRegistrationHandler (() => {
PrintResult (textView, "Read monitor registered");
});
dispatchSource.SetEventHandler (() => {
PrintResult (textView, string.Format ("Read monitor: {0} was opened in read mode", fileURL.LastPathComponent));
dispatchSource.Cancel ();
stream.Close ();
});
dispatchSource.SetCancelHandler (() => {
PrintResult (textView, "Read monitor cancelled");
});
dispatchSource.Resume ();
}