///<summary>Derived class overrides <c>OnEnter</c> to provide specific reader locking semantics.</summary>
protected override void OnEnter(Boolean exclusive)
{
if (exclusive)
{
Interlocked.Increment(ref m_WriteRequests);
Interlocked.Increment(ref m_WritersWaiting);
Int64 startTime = Environment.TickCount;
InnerLock.Enter(exclusive);
// Only 1 thread is writing, so no thread safety is required here
m_WriterMaxWaitTime = Math.Max(m_WriterMaxWaitTime, checked ((Int64)(Environment.TickCount - startTime)));
Interlocked.Decrement(ref m_WritersWaiting);
Interlocked.Increment(ref m_WritersWriting);
m_WriterStartHoldTime = Environment.TickCount;
}
else
{
Interlocked.Increment(ref m_ReadRequests);
Interlocked.Increment(ref m_ReadersWaiting);
Int64 startTime = Environment.TickCount;
InnerLock.Enter(exclusive);
InterlockedEx.Max(ref m_ReaderMaxWaitTime, checked ((Int64)(Environment.TickCount - startTime)));
Interlocked.Decrement(ref m_ReadersWaiting);
Interlocked.Increment(ref m_ReadersReading);
Monitor.Enter(m_ReaderStartHoldTime);
m_ReaderStartHoldTime.Add(Thread.CurrentThread.ManagedThreadId, Environment.TickCount);
Monitor.Exit(m_ReaderStartHoldTime);
}
}
///<summary>Derived class overrides <c>OnDoneReading</c> to provide specific reader unlocking semantics.</summary>
///<remarks>You do not need to override this method if the specific lock provides mutual-exclusive locking semantics.</remarks>
protected override void OnLeave(Boolean write)
{
if (write)
{
// Only 1 thread is writing, so no thread safety is required here
Int64 HoldTime = checked ((Int64)(Environment.TickCount - m_WriterStartHoldTime));
m_WriterMinHoldTime = Math.Min(m_WriterMinHoldTime, HoldTime);
m_WriterMaxHoldTime = Math.Max(m_WriterMaxHoldTime, HoldTime);
m_WritersWriting--;
m_WritersDone++;
InnerLock.Leave();
}
else
{
Int32 threadId = Thread.CurrentThread.ManagedThreadId;
Int64 HoldTime = checked ((Int64)(Environment.TickCount - m_ReaderStartHoldTime[threadId]));
Monitor.Enter(m_ReaderStartHoldTime);
m_ReaderStartHoldTime.Remove(threadId);
Monitor.Exit(m_ReaderStartHoldTime);
InterlockedEx.Min(ref m_ReaderMinHoldTime, HoldTime);
InterlockedEx.Max(ref m_ReaderMaxHoldTime, HoldTime);
Interlocked.Decrement(ref m_ReadersReading);
Interlocked.Increment(ref m_ReadersDone);
InnerLock.Leave();
}
}
// Make sure InnerLock.LockAsync() does not use await, because an async function triggers a snapshot of
// the AsyncLocal value.
public Task <IDisposable> LockAsync(CancellationToken ct = default)
{
var locker = new InnerLock(this, _asyncId.Value, ThreadId);
_asyncId.Value = Interlocked.Increment(ref ExclusiveLock.AsyncStackCounter);
return(locker.ObtainLockAsync(ct));
}
public async Task <IDisposable> LockAsync(CancellationToken ct)
{
var @lock = new InnerLock(this);
await @lock.ObtainLockAsync(ct);
return(@lock);
}
public async Task <IDisposable> LockAsync()
{
var @lock = new InnerLock(this);
await @lock.ObtainLockAsync();
return(@lock);
}
public IDisposable Lock()
{
var @lock = new InnerLock(this);
@lock.ObtainLock();
return(@lock);
}
/// <summary>Implements the ResourceLock's WaitToWrite behavior.</summary>
protected override void OnEnter(Boolean exclusive)
{
Int32 CallingThreadId = Thread.CurrentThread.ManagedThreadId;
if (exclusive)
{
// If the calling thread already owns the lock, add 1 to the recursion count and return
if (CallingThreadId == m_WriterThreadIdAndRecurseCount.m_Id)
{
m_WriterThreadIdAndRecurseCount.m_Count++;
return;
}
InnerLock.Enter(exclusive);
Interlocked.Exchange(ref m_WriterThreadIdAndRecurseCount.m_Id, CallingThreadId);
m_WriterThreadIdAndRecurseCount.m_Count = 0;
}
else
{
Int32 index;
if (TryFindThreadIdIndex(CallingThreadId, out index))
{
// This thread has the reader lock, increment the count and return
m_ReaderThreadIdsAndRecurseCounts[index].m_Count++;
return;
}
// This thread doesn't have the lock, wait for it
InnerLock.Enter(exclusive);
// Record that this thread has the reader lock once
AddThreadIdWithRecurseCountOf1(CallingThreadId);
}
}
public IDisposable Lock()
{
var locker = new InnerLock(this, _asyncId.Value, ThreadId);
// Increment the async stack counter to prevent a child task from getting
// the lock at the same time as a child thread.
_asyncId.Value = Interlocked.Increment(ref ExclusiveLock.AsyncStackCounter);
return(locker.ObtainLock());
}
// Make sure InnerLock.LockAsync() does not use await, because an async function triggers a snapshot of
// the AsyncLocal value.
public Task <IDisposable> LockAsync(CancellationToken ct)
{
if (AsyncId == 0)
{
_asyncId.Value = Interlocked.Increment(ref AsyncLock.AsyncStackCounter);
}
var @lock = new InnerLock(this);
return(@lock.ObtainLockAsync(ct));
}
public IDisposable Lock()
{
if (AsyncId == 0)
{
_asyncId.Value = Interlocked.Increment(ref AsyncLock.AsyncStackCounter);
}
var @lock = new InnerLock(this);
return(@lock.ObtainLock());
}
/// <summary>Implements the ResourceLock's Enter behavior.</summary>
protected override void OnEnter(Boolean exclusive)
{
StackTrace st = new System.Diagnostics.StackTrace(0, true);
using (new Timer(OnTimeout, st, m_timeout, -1)) {
if (exclusive)
{
InnerLock.Enter(exclusive);
}
}
}
private static InnerLock AcquireLock([NotNull] object key)
{
lock (Locks)
{
if (!Locks.ContainsKey(key))
{
Locks[key] = new InnerLock();
}
return(Locks[key]);
}
}
/// <summary>
/// Führt anwendungsspezifische Aufgaben durch, die mit der Freigabe, der Zurückgabe oder dem Zurücksetzen von nicht verwalteten Ressourcen zusammenhängen.
/// </summary>
/// <filterpriority>2</filterpriority>
public void Dispose()
{
if (InnerLock != null)
{
InnerLock.Dispose();
InnerLock = null;
}
if (buffer != null)
{
buffer.DecreaseActiveConnectionCount(target);
buffer = null;
}
}
protected override void OnLeave(Boolean write)
{
if (write)
{
VerifyOneWriter("Done writing while not writing!");
VerifyNoReaders("Done writing while already reading!");
InterlockedEx.BitTestAndReset(ref m_LockState, 31); // Remove the writer
}
else
{
VerifySomeReaders("Done reading while not reading!");
VerifyNoWriters("Done reading while already writing!");
Interlocked.Decrement(ref m_LockState); // Subtract a reader
}
InnerLock.Leave();
}
protected override void OnEnter(Boolean exclusive)
{
if (exclusive)
{
InnerLock.Enter(exclusive);
VerifyNoWriters("Writing while already writing!");
VerifyNoReaders("Writing while already reading!");
InterlockedEx.BitTestAndSet(ref m_LockState, 31); // Add the writer
}
else
{
InnerLock.Enter(exclusive);
VerifyNoWriters("Reading while already writing!"); // Sanity check for no writers
Interlocked.Increment(ref m_LockState); // Add a reader
}
}
private void LoginForm_Shown(object sender, EventArgs e)
{
InnerLock.Check();
AuthResponse response = new AuthResponse();
if (response.AuthenticateProgram("d2BwyxWCiMv7P$#sG99KfjaFH")) //Chnage to match the Auth token you generate to use without error.
{
if (response.FreeModeActive) //This is only if you wish to have free mode implemented in your application
{
response.ExecuteFreeMode(new Main(), this);
}
}
else
{
MessageBox.Show("Mismatch in program authentication tokens has been noticed. Program will now close for security purposes.");
Application.Exit();
}
}
/// <summary>Implements the ResourceLock's Leave behavior.</summary>
protected override void OnLeave(Boolean exclusive)
{
Int32 CallingThreadId = Thread.CurrentThread.ManagedThreadId;
if (exclusive)
{
if (m_WriterThreadIdAndRecurseCount.m_Id != CallingThreadId)
{
throw new InvalidOperationException("Calling thread doesn't own this lock for writing!");
}
if (--m_WriterThreadIdAndRecurseCount.m_Count > 0)
{
return;
}
Interlocked.Exchange(ref m_WriterThreadIdAndRecurseCount.m_Id, 0);
InnerLock.Leave();
}
else
{
Int32 index;
if (!TryFindThreadIdIndex(CallingThreadId, out index))
{
throw new InvalidOperationException("Calling thread doesn't own the lock for reading!");
}
// Decrement this readers recursion count
if (--m_ReaderThreadIdsAndRecurseCounts[index].m_Count == 0)
{
// If this reader is done (recursion count == 0), remove this reader off the list
Interlocked.Exchange(ref m_ReaderThreadIdsAndRecurseCounts[index].m_Id, 0);
// This reader gives up the lock too
InnerLock.Leave();
}
}
}
/// <summary>Implements the ResourceLock's Leave behavior.</summary>
protected override void OnLeave(Boolean exclusive)
{
InnerLock.Leave();
}
