/// <summary>
/// Acquires a writer lock.
/// </summary>
/// <param name="transactionId">A token used to identify the holder of the lock.</param>
/// <param name="timeSpan">The time that the thread will wait for the lock.</param>
//[global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
public virtual void AcquireWriterLock(global::System.Guid transactionId, global::System.TimeSpan timeSpan)
{
try
{
global::System.Threading.Monitor.Enter(this.rowRoot);
this.writerWaiters = (this.writerWaiters + 1);
if ((this.writer != transactionId))
{
int index = this._readers.BinarySearch(transactionId);
if ((index >= 0))
{
this._readers.RemoveAt(index);
if (EventLog.IsLoggingEnabledFor(EventLog.ErrorLogLevel.Verbose))
{
this._readersStackTrace.RemoveAt(index);
}
}
for (
; ((this.writer != global::System.Guid.Empty) ||
(this._readers.Count != 0));
)
{
try
{
try
{
global::System.Threading.Monitor.Enter(this.writerRoot);
global::System.Threading.Monitor.Exit(this.rowRoot);
if (false == global::System.Threading.Monitor.Wait(this.writerRoot, timeSpan))
{
try
{
EventLog.Information("AcquireWriterLock TIMEOUT\r\n {0} Current Stack: {1} \r\n{2}", this.GetRowDebugDescription(), UnhandledExceptionHelper.GetStackString(), this.GetCurrentLockStacks(false));
}
catch
{
}
throw new FluidTrade.Core.Utilities.DeadlockException("AcquireWriterLock TIMEOUT", null);
}
}
finally
{
global::System.Threading.Monitor.Exit(this.writerRoot);
}
}
finally
{
global::System.Threading.Monitor.Enter(this.rowRoot);
}
}
this.writer = transactionId;
}
}
finally
{
this.writerWaiters = (this.writerWaiters - 1);
global::System.Threading.Monitor.Exit(this.rowRoot);
}
}
/// <summary>
/// Releases every lock held by this record.
/// </summary>
/// <param name="transactionId">A token used to identify the holder of the lock.</param>
//[global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
public virtual void ReleaseLock(global::System.Guid transactionId)
{
try
{
global::System.Threading.Monitor.Enter(this.rowRoot);
int index = this._readers.BinarySearch(transactionId);
if ((index >= 0))
{
this._readers.RemoveAt(index);
if (EventLog.IsLoggingEnabledFor(EventLog.ErrorLogLevel.Verbose))
{
this._readersStackTrace.RemoveAt(index);
}
if (((this._readers.Count == 0) &&
(this.writerWaiters != 0)))
{
try
{
global::System.Threading.Monitor.Enter(this.writerRoot);
global::System.Threading.Monitor.Pulse(this.writerRoot);
}
finally
{
global::System.Threading.Monitor.Exit(this.writerRoot);
}
}
}
if ((this.writer == transactionId))
{
this.writer = global::System.Guid.Empty;
if ((this.readerWaiters > 0))
{
global::System.Threading.Monitor.PulseAll(this.rowRoot);
}
else
{
if ((this.writerWaiters > 0))
{
try
{
global::System.Threading.Monitor.Enter(this.writerRoot);
global::System.Threading.Monitor.Pulse(this.writerRoot);
}
finally
{
global::System.Threading.Monitor.Exit(this.writerRoot);
}
}
}
}
}
finally
{
global::System.Threading.Monitor.Exit(this.rowRoot);
}
}
private void InsertToReaderList(global::System.Guid transactionId, int index)
{
this._readers.Insert(((0 - index)
- 1), transactionId);
if (EventLog.IsLoggingEnabledFor(EventLog.ErrorLogLevel.Verbose))
{
this._readersStackTrace.Insert(((0 - index)
- 1), UnhandledExceptionHelper.GetStackString());
}
}
protected DataRowBase(global::System.Data.DataRowBuilder dataRowBuilder) :
base(dataRowBuilder)
{
this._readers = new global::System.Collections.Generic.List <System.Guid>();
if (EventLog.IsLoggingEnabledFor(EventLog.ErrorLogLevel.Verbose))
{
this._readersStackTrace = new System.Collections.Generic.List <string>();
}
this.rowRoot = new object();
this.writerRoot = new object();
this.writer = global::System.Guid.Empty;
}
/// <summary>
/// Releases the reader lock on this record.
/// </summary>
/// <param name="transactionId">A token used to hold locks.</param>
//[global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
public virtual void ReleaseReaderLock(global::System.Guid transactionId)
{
try
{
global::System.Threading.Monitor.Enter(this.rowRoot);
if (this.writer != transactionId) //no-op if there is a writer lock
{
int index = this._readers.BinarySearch(transactionId);
if ((index < 0))
{
throw new global::System.ServiceModel.FaultException <FluidTrade.Core.SynchronizationLockFault>(new global::FluidTrade.Core.SynchronizationLockFault(this.Table.TableName));
}
this._readers.RemoveAt(index);
if (EventLog.IsLoggingEnabledFor(EventLog.ErrorLogLevel.Verbose))
{
this._readersStackTrace.RemoveAt(index);
}
if (((this._readers.Count == 0) &&
(this.writerWaiters != 0)))
{
try
{
global::System.Threading.Monitor.Enter(this.writerRoot);
global::System.Threading.Monitor.Pulse(this.writerRoot);
}
finally
{
global::System.Threading.Monitor.Exit(this.writerRoot);
}
}
}
}
finally
{
global::System.Threading.Monitor.Exit(this.rowRoot);
}
}
/// <summary>
/// Acquires a writer lock for this record.
/// </summary>
/// <param name="dataModelTransaction">The transaction context for this operation.</param>
//[global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
public virtual void AcquireWriterLock(IDataModelTransaction dataModelTransaction)
{
global::System.Guid transactionId = dataModelTransaction.TransactionId;
try
{
global::System.Threading.Monitor.Enter(this.rowRoot);
this.writerWaiters = (this.writerWaiters + 1);
if ((this.writer != transactionId))
{
int index = this._readers.BinarySearch(transactionId);
if ((index >= 0))
{
this._readers.RemoveAt(index);
if (EventLog.IsLoggingEnabledFor(EventLog.ErrorLogLevel.Verbose))
{
this._readersStackTrace.RemoveAt(index);
}
}
for (
; ((this.writer != global::System.Guid.Empty) ||
(this._readers.Count != 0));
)
{
try
{
try
{
global::System.Threading.Monitor.Enter(this.writerRoot);
global::System.Threading.Monitor.Exit(this.rowRoot);
if (false == global::System.Threading.Monitor.Wait(this.writerRoot, this.LockTimeout))
{
try
{
EventLog.Information("AcquireWriterLock TIMEOUT\r\n {0} Current Stack: {1} \r\n{2}", this.GetRowDebugDescription(), UnhandledExceptionHelper.GetStackString(), this.GetCurrentLockStacks(false));
}
catch
{
}
throw new FluidTrade.Core.Utilities.DeadlockException("AcquireWriterLock TIMEOUT", null);
}
}
finally
{
global::System.Threading.Monitor.Exit(this.writerRoot);
}
}
finally
{
global::System.Threading.Monitor.Enter(this.rowRoot);
}
}
this.writer = transactionId;
}
}
finally
{
this.writerWaiters = (this.writerWaiters - 1);
global::System.Threading.Monitor.Exit(this.rowRoot);
}
dataModelTransaction.AddLock(this);
if ((this.RowState == global::System.Data.DataRowState.Detached))
{
throw new global::System.Exception("The " + this.GetType().FullName + " record was deleted after it was locked");
}
}