private void TakeContainerLock(OletxPhase0VolatileEnlistmentContainer localPhase0VolatileContainer, ref bool phase0ContainerLockAcquired)
{
if (!phase0ContainerLockAcquired)
{
Monitor.Enter(localPhase0VolatileContainer);
phase0ContainerLockAcquired = true;
}
}
private void ReleaseContainerLock(OletxPhase0VolatileEnlistmentContainer localPhase0VolatileContainer, ref bool phase0ContainerLockAcquired)
{
if (phase0ContainerLockAcquired)
{
Monitor.Exit(localPhase0VolatileContainer);
phase0ContainerLockAcquired = false;
}
}
internal static void ShimNotificationCallback(object state, bool timeout)
{
IntPtr zero = IntPtr.Zero;
ShimNotificationType none = ShimNotificationType.None;
bool isSinglePhase = false;
bool abortingHint = false;
uint prepareInfoSize = 0;
CoTaskMemHandle prepareInfo = null;
bool releaseRequired = false;
bool flag3 = false;
IDtcProxyShimFactory factory = null;
if (DiagnosticTrace.Verbose)
{
MethodEnteredTraceRecord.Trace(System.Transactions.SR.GetString("TraceSourceOletx"), "OletxTransactionManager.ShimNotificationCallback");
}
Thread.BeginCriticalRegion();
try
{
Label_003D:
factory = proxyShimFactory;
try
{
object obj2;
OletxResourceManager manager2;
byte[] buffer;
Thread.BeginThreadAffinity();
RuntimeHelpers.PrepareConstrainedRegions();
try
{
factory.GetNotification(out zero, out none, out isSinglePhase, out abortingHint, out releaseRequired, out prepareInfoSize, out prepareInfo);
}
finally
{
if (releaseRequired)
{
if (HandleTable.FindHandle(zero) is OletxInternalResourceManager)
{
processingTmDown = true;
Monitor.Enter(proxyShimFactory);
}
else
{
releaseRequired = false;
}
factory.ReleaseNotificationLock();
}
Thread.EndThreadAffinity();
}
if (processingTmDown)
{
lock (proxyShimFactory)
{
}
}
if (none != ShimNotificationType.None)
{
obj2 = HandleTable.FindHandle(zero);
switch (none)
{
case ShimNotificationType.Phase0RequestNotify:
try
{
OletxPhase0VolatileEnlistmentContainer container5 = obj2 as OletxPhase0VolatileEnlistmentContainer;
if (container5 != null)
{
DiagnosticTrace.SetActivityId(container5.TransactionIdentifier);
container5.Phase0Request(abortingHint);
}
else
{
OletxEnlistment enlistment8 = obj2 as OletxEnlistment;
if (enlistment8 != null)
{
DiagnosticTrace.SetActivityId(enlistment8.TransactionIdentifier);
enlistment8.Phase0Request(abortingHint);
}
else
{
Environment.FailFast(System.Transactions.SR.GetString("InternalError"));
}
}
goto Label_0444;
}
finally
{
HandleTable.FreeHandle(zero);
}
break;
case ShimNotificationType.VoteRequestNotify:
break;
case ShimNotificationType.PrepareRequestNotify:
goto Label_02B0;
case ShimNotificationType.CommitRequestNotify:
goto Label_031A;
case ShimNotificationType.AbortRequestNotify:
goto Label_0358;
case ShimNotificationType.CommittedNotify:
try
{
OutcomeEnlistment enlistment7 = obj2 as OutcomeEnlistment;
if (enlistment7 != null)
{
DiagnosticTrace.SetActivityId(enlistment7.TransactionIdentifier);
enlistment7.Committed();
}
else
{
OletxPhase1VolatileEnlistmentContainer container3 = obj2 as OletxPhase1VolatileEnlistmentContainer;
if (container3 != null)
{
DiagnosticTrace.SetActivityId(container3.TransactionIdentifier);
container3.Committed();
}
else
{
Environment.FailFast(System.Transactions.SR.GetString("InternalError"));
}
}
goto Label_0444;
}
finally
{
HandleTable.FreeHandle(zero);
}
goto Label_0203;
case ShimNotificationType.AbortedNotify:
goto Label_0203;
case ShimNotificationType.InDoubtNotify:
goto Label_0251;
case ShimNotificationType.EnlistmentTmDownNotify:
goto Label_0396;
case ShimNotificationType.ResourceManagerTmDownNotify:
goto Label_03CD;
default:
goto Label_0410;
}
OletxPhase1VolatileEnlistmentContainer container4 = obj2 as OletxPhase1VolatileEnlistmentContainer;
if (container4 != null)
{
DiagnosticTrace.SetActivityId(container4.TransactionIdentifier);
container4.VoteRequest();
}
else
{
Environment.FailFast(System.Transactions.SR.GetString("InternalError"));
}
}
goto Label_0444;
Label_0203 :;
try
{
OutcomeEnlistment enlistment6 = obj2 as OutcomeEnlistment;
if (enlistment6 != null)
{
DiagnosticTrace.SetActivityId(enlistment6.TransactionIdentifier);
enlistment6.Aborted();
}
else
{
OletxPhase1VolatileEnlistmentContainer container2 = obj2 as OletxPhase1VolatileEnlistmentContainer;
if (container2 != null)
{
DiagnosticTrace.SetActivityId(container2.TransactionIdentifier);
container2.Aborted();
}
}
goto Label_0444;
}
finally
{
HandleTable.FreeHandle(zero);
}
Label_0251 :;
try
{
OutcomeEnlistment enlistment5 = obj2 as OutcomeEnlistment;
if (enlistment5 != null)
{
DiagnosticTrace.SetActivityId(enlistment5.TransactionIdentifier);
enlistment5.InDoubt();
}
else
{
OletxPhase1VolatileEnlistmentContainer container = obj2 as OletxPhase1VolatileEnlistmentContainer;
if (container != null)
{
DiagnosticTrace.SetActivityId(container.TransactionIdentifier);
container.InDoubt();
}
else
{
Environment.FailFast(System.Transactions.SR.GetString("InternalError"));
}
}
goto Label_0444;
}
finally
{
HandleTable.FreeHandle(zero);
}
Label_02B0:
buffer = new byte[prepareInfoSize];
Marshal.Copy(prepareInfo.DangerousGetHandle(), buffer, 0, Convert.ToInt32(prepareInfoSize));
bool flag2 = true;
try
{
OletxEnlistment enlistment4 = obj2 as OletxEnlistment;
if (enlistment4 != null)
{
DiagnosticTrace.SetActivityId(enlistment4.TransactionIdentifier);
flag2 = enlistment4.PrepareRequest(isSinglePhase, buffer);
}
else
{
Environment.FailFast(System.Transactions.SR.GetString("InternalError"));
}
goto Label_0444;
}
finally
{
if (flag2)
{
HandleTable.FreeHandle(zero);
}
}
Label_031A :;
try
{
OletxEnlistment enlistment3 = obj2 as OletxEnlistment;
if (enlistment3 != null)
{
DiagnosticTrace.SetActivityId(enlistment3.TransactionIdentifier);
enlistment3.CommitRequest();
}
else
{
Environment.FailFast(System.Transactions.SR.GetString("InternalError"));
}
goto Label_0444;
}
finally
{
HandleTable.FreeHandle(zero);
}
Label_0358 :;
try
{
OletxEnlistment enlistment2 = obj2 as OletxEnlistment;
if (enlistment2 != null)
{
DiagnosticTrace.SetActivityId(enlistment2.TransactionIdentifier);
enlistment2.AbortRequest();
}
else
{
Environment.FailFast(System.Transactions.SR.GetString("InternalError"));
}
goto Label_0444;
}
finally
{
HandleTable.FreeHandle(zero);
}
Label_0396 :;
try
{
OletxEnlistment enlistment = obj2 as OletxEnlistment;
if (enlistment != null)
{
DiagnosticTrace.SetActivityId(enlistment.TransactionIdentifier);
enlistment.TMDown();
}
else
{
Environment.FailFast(System.Transactions.SR.GetString("InternalError"));
}
goto Label_0444;
}
finally
{
HandleTable.FreeHandle(zero);
}
Label_03CD:
manager2 = obj2 as OletxResourceManager;
try
{
if (manager2 != null)
{
manager2.TMDown();
}
else
{
OletxInternalResourceManager manager = obj2 as OletxInternalResourceManager;
if (manager != null)
{
manager.TMDown();
}
else
{
Environment.FailFast(System.Transactions.SR.GetString("InternalError"));
}
}
goto Label_0444;
}
finally
{
HandleTable.FreeHandle(zero);
}
Label_0410:
Environment.FailFast(System.Transactions.SR.GetString("InternalError"));
}
finally
{
if (prepareInfo != null)
{
prepareInfo.Close();
}
if (releaseRequired)
{
releaseRequired = false;
processingTmDown = false;
Monitor.Exit(proxyShimFactory);
}
}
Label_0444:
if (none != ShimNotificationType.None)
{
goto Label_003D;
}
flag3 = true;
}
finally
{
if (releaseRequired)
{
releaseRequired = false;
processingTmDown = false;
Monitor.Exit(proxyShimFactory);
}
if (!flag3 && (zero != IntPtr.Zero))
{
HandleTable.FreeHandle(zero);
}
Thread.EndCriticalRegion();
}
if (DiagnosticTrace.Verbose)
{
MethodExitedTraceRecord.Trace(System.Transactions.SR.GetString("TraceSourceOletx"), "OletxTransactionManager.ShimNotificationCallback");
}
}
internal OletxVolatileEnlistmentContainer AddDependentClone(bool delayCommit)
{
IVoterBallotShim voterBallotShim = null;
IPhase0EnlistmentShim shim2 = null;
bool flag2 = false;
bool flag = false;
OletxVolatileEnlistmentContainer container3 = null;
OletxPhase0VolatileEnlistmentContainer container = null;
OletxPhase1VolatileEnlistmentContainer target = null;
bool flag3 = false;
bool flag5 = false;
IntPtr zero = IntPtr.Zero;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
lock (this)
{
if (delayCommit)
{
if (this.phase0EnlistVolatilementContainerList == null)
{
this.phase0EnlistVolatilementContainerList = new ArrayList(1);
}
if (this.phase0EnlistVolatilementContainerList.Count == 0)
{
container = new OletxPhase0VolatileEnlistmentContainer(this);
flag = true;
}
else
{
container = this.phase0EnlistVolatilementContainerList[this.phase0EnlistVolatilementContainerList.Count - 1] as OletxPhase0VolatileEnlistmentContainer;
if (container != null)
{
this.TakeContainerLock(container, ref flag5);
}
if (!container.NewEnlistmentsAllowed)
{
this.ReleaseContainerLock(container, ref flag5);
container = new OletxPhase0VolatileEnlistmentContainer(this);
flag = true;
}
else
{
flag = false;
}
}
if (flag)
{
zero = HandleTable.AllocHandle(container);
}
}
else if (this.phase1EnlistVolatilementContainer == null)
{
target = new OletxPhase1VolatileEnlistmentContainer(this);
flag2 = true;
target.voterHandle = HandleTable.AllocHandle(target);
}
else
{
flag2 = false;
target = this.phase1EnlistVolatilementContainer;
}
try
{
if (container != null)
{
this.TakeContainerLock(container, ref flag5);
}
if (flag)
{
this.transactionShim.Phase0Enlist(zero, out shim2);
container.Phase0EnlistmentShim = shim2;
}
if (flag2)
{
this.OletxTransactionManagerInstance.dtcTransactionManagerLock.AcquireReaderLock(-1);
try
{
this.transactionShim.CreateVoter(target.voterHandle, out voterBallotShim);
flag3 = true;
}
finally
{
this.OletxTransactionManagerInstance.dtcTransactionManagerLock.ReleaseReaderLock();
}
target.VoterBallotShim = voterBallotShim;
}
if (delayCommit)
{
if (flag)
{
this.phase0EnlistVolatilementContainerList.Add(container);
}
container.AddDependentClone();
return container;
}
if (flag2)
{
this.phase1EnlistVolatilementContainer = target;
}
target.AddDependentClone();
return target;
}
catch (COMException exception)
{
OletxTransactionManager.ProxyException(exception);
throw;
}
return container3;
}
}
finally
{
if (container != null)
{
this.ReleaseContainerLock(container, ref flag5);
}
if ((zero != IntPtr.Zero) && (container.Phase0EnlistmentShim == null))
{
HandleTable.FreeHandle(zero);
}
if ((!flag3 && (target != null)) && ((target.voterHandle != IntPtr.Zero) && flag2))
{
HandleTable.FreeHandle(target.voterHandle);
}
}
return container3;
}
private void TakeContainerLock(OletxPhase0VolatileEnlistmentContainer localPhase0VolatileContainer, ref bool phase0ContainerLockAcquired)
{
if (!phase0ContainerLockAcquired)
{
Monitor.Enter(localPhase0VolatileContainer);
phase0ContainerLockAcquired = true;
}
}
private void ReleaseContainerLock(OletxPhase0VolatileEnlistmentContainer localPhase0VolatileContainer, ref bool phase0ContainerLockAcquired)
{
if (phase0ContainerLockAcquired)
{
Monitor.Exit(localPhase0VolatileContainer);
phase0ContainerLockAcquired = false;
}
}
internal IPromotedEnlistment CommonEnlistVolatile(IEnlistmentNotificationInternal enlistmentNotification, EnlistmentOptions enlistmentOptions, OletxTransaction oletxTransaction)
{
OletxVolatileEnlistment enlistment = null;
bool flag2 = false;
bool flag = false;
OletxPhase0VolatileEnlistmentContainer target = null;
OletxPhase1VolatileEnlistmentContainer container = null;
IntPtr zero = IntPtr.Zero;
IVoterBallotShim voterBallotShim = null;
IPhase0EnlistmentShim shim = null;
bool flag3 = false;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
lock (this)
{
enlistment = new OletxVolatileEnlistment(enlistmentNotification, enlistmentOptions, oletxTransaction);
if ((enlistmentOptions & EnlistmentOptions.EnlistDuringPrepareRequired) != EnlistmentOptions.None)
{
if (this.phase0EnlistVolatilementContainerList == null)
{
this.phase0EnlistVolatilementContainerList = new ArrayList(1);
}
if (this.phase0EnlistVolatilementContainerList.Count == 0)
{
target = new OletxPhase0VolatileEnlistmentContainer(this);
flag = true;
}
else
{
target = this.phase0EnlistVolatilementContainerList[this.phase0EnlistVolatilementContainerList.Count - 1] as OletxPhase0VolatileEnlistmentContainer;
if (!target.NewEnlistmentsAllowed)
{
target = new OletxPhase0VolatileEnlistmentContainer(this);
flag = true;
}
else
{
flag = false;
}
}
if (flag)
{
zero = HandleTable.AllocHandle(target);
}
}
else if (this.phase1EnlistVolatilementContainer == null)
{
flag2 = true;
container = new OletxPhase1VolatileEnlistmentContainer(this) {
voterHandle = HandleTable.AllocHandle(container)
};
}
else
{
flag2 = false;
container = this.phase1EnlistVolatilementContainer;
}
try
{
if (flag)
{
lock (target)
{
this.transactionShim.Phase0Enlist(zero, out shim);
target.Phase0EnlistmentShim = shim;
}
}
if (flag2)
{
this.transactionShim.CreateVoter(container.voterHandle, out voterBallotShim);
flag3 = true;
container.VoterBallotShim = voterBallotShim;
}
if ((enlistmentOptions & EnlistmentOptions.EnlistDuringPrepareRequired) != EnlistmentOptions.None)
{
target.AddEnlistment(enlistment);
if (flag)
{
this.phase0EnlistVolatilementContainerList.Add(target);
}
return enlistment;
}
container.AddEnlistment(enlistment);
if (flag2)
{
this.phase1EnlistVolatilementContainer = container;
}
return enlistment;
}
catch (COMException exception)
{
OletxTransactionManager.ProxyException(exception);
throw;
}
return enlistment;
}
}
finally
{
if ((zero != IntPtr.Zero) && (target.Phase0EnlistmentShim == null))
{
HandleTable.FreeHandle(zero);
}
if ((!flag3 && (container != null)) && ((container.voterHandle != IntPtr.Zero) && flag2))
{
HandleTable.FreeHandle(container.voterHandle);
}
}
return enlistment;
}
internal OletxVolatileEnlistmentContainer AddDependentClone( bool delayCommit )
{
IPhase0EnlistmentShim phase0Shim = null;
IVoterBallotShim voterShim = null;
bool needVoterEnlistment = false;
bool needPhase0Enlistment = false;
OletxVolatileEnlistmentContainer returnValue = null;
OletxPhase0VolatileEnlistmentContainer localPhase0VolatileContainer = null;
OletxPhase1VolatileEnlistmentContainer localPhase1VolatileContainer = null;
bool enlistmentSucceeded = false;
bool phase0ContainerLockAcquired = false;
IntPtr phase0Handle = IntPtr.Zero;
// Yes, we are talking to the proxy while holding the lock on the RealOletxTransaction.
// If we don't then things get real sticky with other threads allocating containers.
// We only do this the first time we get a depenent clone of a given type (delay vs. non-delay).
// After that, we don't create a new container, except for Phase0 if we need to create one
// for a second wave.
RuntimeHelpers.PrepareConstrainedRegions();
try
{
lock ( this )
{
if ( delayCommit )
{
if ( null == this.phase0EnlistVolatilementContainerList )
{
// Not using a MemoryBarrier because all access to this member variable is under a lock of the
// object.
this.phase0EnlistVolatilementContainerList = new ArrayList(1);
}
// We may have failed the proxy enlistment for the first container, but we would have
// allocated the list. That is why we have this check here.
if ( 0 == this.phase0EnlistVolatilementContainerList.Count )
{
localPhase0VolatileContainer = new OletxPhase0VolatileEnlistmentContainer( this );
needPhase0Enlistment = true;
}
else
{
localPhase0VolatileContainer = this.phase0EnlistVolatilementContainerList[this.phase0EnlistVolatilementContainerList.Count - 1] as OletxPhase0VolatileEnlistmentContainer;
if (localPhase0VolatileContainer != null)
{
//CSDMain 91509 - We now synchronize this call with the shim notification trying to call Phase0Request on this container
TakeContainerLock(localPhase0VolatileContainer, ref phase0ContainerLockAcquired);
}
if ( ! localPhase0VolatileContainer.NewEnlistmentsAllowed )
{
//It is OK to release the lock at this time because we are creating a new container that has not yet
//been enlisted with DTC. So there is no ---- to worry about
ReleaseContainerLock(localPhase0VolatileContainer, ref phase0ContainerLockAcquired);
localPhase0VolatileContainer = new OletxPhase0VolatileEnlistmentContainer( this );
needPhase0Enlistment = true;
}
else
{
needPhase0Enlistment = false;
}
}
if ( needPhase0Enlistment )
{
// We need to create a VoterNotifyShim if native threads are not allowed to enter managed code.
phase0Handle = HandleTable.AllocHandle( localPhase0VolatileContainer );
}
}
else // ! delayCommit
{
if ( null == this.phase1EnlistVolatilementContainer )
{
localPhase1VolatileContainer = new OletxPhase1VolatileEnlistmentContainer( this );
needVoterEnlistment = true;
// We need to create a VoterNotifyShim.
localPhase1VolatileContainer.voterHandle =
HandleTable.AllocHandle( localPhase1VolatileContainer );
}
else
{
needVoterEnlistment = false;
localPhase1VolatileContainer = this.phase1EnlistVolatilementContainer;
}
}
try
{
//At this point, we definitely need the lock on the phase0 container so that it doesnt ---- with shim notifications from unmanaged code
//corrupting state while we are in the middle of an AddDependentClone processing
if (localPhase0VolatileContainer != null)
{
TakeContainerLock(localPhase0VolatileContainer, ref phase0ContainerLockAcquired);
}
// If enlistDuringPrepareRequired is true, we need to ask the proxy to create a Phase0 enlistment.
if ( needPhase0Enlistment )
{
// We need to use shims if native threads are not allowed to enter managed code.
this.transactionShim.Phase0Enlist(
phase0Handle,
out phase0Shim );
localPhase0VolatileContainer.Phase0EnlistmentShim = phase0Shim;
}
if ( needVoterEnlistment )
{
// We need to use shims if native threads are not allowed to enter managed code.
OletxTransactionManagerInstance.dtcTransactionManagerLock.AcquireReaderLock( -1 );
try
{
this.transactionShim.CreateVoter(
localPhase1VolatileContainer.voterHandle,
out voterShim );
enlistmentSucceeded = true;
}
finally
{
OletxTransactionManagerInstance.dtcTransactionManagerLock.ReleaseReaderLock();
}
localPhase1VolatileContainer.VoterBallotShim = voterShim;
}
if ( delayCommit )
{
// if we needed a Phase0 enlistment, we need to add the container to the
// list.
if ( needPhase0Enlistment )
{
this.phase0EnlistVolatilementContainerList.Add( localPhase0VolatileContainer );
}
localPhase0VolatileContainer.AddDependentClone();
returnValue = localPhase0VolatileContainer;
}
else
{
// If we needed a voter enlistment, we need to save the container as THE
// phase1 container for this transaction.
if ( needVoterEnlistment )
{
Debug.Assert( ( null == this.phase1EnlistVolatilementContainer ),
"RealOletxTransaction.AddDependentClone - phase1VolContainer not null when expected" );
this.phase1EnlistVolatilementContainer = localPhase1VolatileContainer;
}
localPhase1VolatileContainer.AddDependentClone();
returnValue = localPhase1VolatileContainer;
}
}
catch (COMException comException)
{
OletxTransactionManager.ProxyException( comException );
throw;
}
}
}
finally
{
//First release the lock on the phase 0 container if it was acquired. Any work on localPhase0VolatileContainer
//that needs its state to be consistent while processing should do so before this statement is executed.
if (localPhase0VolatileContainer != null)
{
ReleaseContainerLock(localPhase0VolatileContainer, ref phase0ContainerLockAcquired);
}
if ( phase0Handle != IntPtr.Zero && localPhase0VolatileContainer.Phase0EnlistmentShim == null )
{
HandleTable.FreeHandle( phase0Handle );
}
if ( !enlistmentSucceeded &&
null != localPhase1VolatileContainer &&
localPhase1VolatileContainer.voterHandle != IntPtr.Zero &&
needVoterEnlistment )
{
HandleTable.FreeHandle( localPhase1VolatileContainer.voterHandle );
}
}
return returnValue;
}
internal IPromotedEnlistment CommonEnlistVolatile(
IEnlistmentNotificationInternal enlistmentNotification,
EnlistmentOptions enlistmentOptions,
OletxTransaction oletxTransaction
)
{
OletxVolatileEnlistment enlistment = null;
bool needVoterEnlistment = false;
bool needPhase0Enlistment = false;
OletxPhase0VolatileEnlistmentContainer localPhase0VolatileContainer = null;
OletxPhase1VolatileEnlistmentContainer localPhase1VolatileContainer = null;
IntPtr phase0Handle = IntPtr.Zero;
IVoterBallotShim voterShim = null;
IPhase0EnlistmentShim phase0Shim = null;
bool enlistmentSucceeded = false;
// Yes, we are talking to the proxy while holding the lock on the RealOletxTransaction.
// If we don't then things get real sticky with other threads allocating containers.
// We only do this the first time we get a depenent clone of a given type (delay vs. non-delay).
// After that, we don't create a new container, except for Phase0 if we need to create one
// for a second wave.
RuntimeHelpers.PrepareConstrainedRegions();
try
{
lock ( this )
{
enlistment = new OletxVolatileEnlistment(
enlistmentNotification,
enlistmentOptions,
oletxTransaction
);
if ( (enlistmentOptions & EnlistmentOptions.EnlistDuringPrepareRequired) != 0 )
{
if ( null == this.phase0EnlistVolatilementContainerList )
{
// Not using a MemoryBarrier because all access to this member variable is done when holding
// a lock on the object.
this.phase0EnlistVolatilementContainerList = new ArrayList(1);
}
// We may have failed the proxy enlistment for the first container, but we would have
// allocated the list. That is why we have this check here.
if ( 0 == this.phase0EnlistVolatilementContainerList.Count )
{
localPhase0VolatileContainer = new OletxPhase0VolatileEnlistmentContainer( this );
needPhase0Enlistment = true;
}
else
{
localPhase0VolatileContainer = this.phase0EnlistVolatilementContainerList[this.phase0EnlistVolatilementContainerList.Count - 1] as OletxPhase0VolatileEnlistmentContainer;
if ( ! localPhase0VolatileContainer.NewEnlistmentsAllowed )
{
localPhase0VolatileContainer = new OletxPhase0VolatileEnlistmentContainer( this );
needPhase0Enlistment = true;
}
else
{
needPhase0Enlistment = false;
}
}
if ( needPhase0Enlistment )
{
// We need to create a VoterNotifyShim if native threads are not allowed to enter managed code.
phase0Handle = HandleTable.AllocHandle( localPhase0VolatileContainer );
}
}
else // not EDPR = TRUE - may need a voter...
{
if ( null == this.phase1EnlistVolatilementContainer )
{
needVoterEnlistment = true;
localPhase1VolatileContainer = new OletxPhase1VolatileEnlistmentContainer( this );
// We need to create a VoterNotifyShim.
localPhase1VolatileContainer.voterHandle =
HandleTable.AllocHandle( localPhase1VolatileContainer );
}
else
{
needVoterEnlistment = false;
localPhase1VolatileContainer = this.phase1EnlistVolatilementContainer;
}
}
try
{
// If enlistDuringPrepareRequired is true, we need to ask the proxy to create a Phase0 enlistment.
if ( needPhase0Enlistment )
{
lock ( localPhase0VolatileContainer )
{
transactionShim.Phase0Enlist(
phase0Handle,
out phase0Shim );
localPhase0VolatileContainer.Phase0EnlistmentShim = phase0Shim;
}
}
if ( needVoterEnlistment )
{
this.transactionShim.CreateVoter(
localPhase1VolatileContainer.voterHandle,
out voterShim );
enlistmentSucceeded = true;
localPhase1VolatileContainer.VoterBallotShim = voterShim;
}
if ( (enlistmentOptions & EnlistmentOptions.EnlistDuringPrepareRequired) != 0 )
{
localPhase0VolatileContainer.AddEnlistment(
enlistment
);
if ( needPhase0Enlistment )
{
this.phase0EnlistVolatilementContainerList.Add( localPhase0VolatileContainer );
}
}
else
{
localPhase1VolatileContainer.AddEnlistment(
enlistment
);
if ( needVoterEnlistment )
{
Debug.Assert( ( null == this.phase1EnlistVolatilementContainer ),
"RealOletxTransaction.CommonEnlistVolatile - phase1VolContainer not null when expected." );
this.phase1EnlistVolatilementContainer = localPhase1VolatileContainer;
}
}
}
catch (COMException comException)
{
OletxTransactionManager.ProxyException( comException );
throw;
}
}
}
finally
{
if ( phase0Handle != IntPtr.Zero && localPhase0VolatileContainer.Phase0EnlistmentShim == null )
{
HandleTable.FreeHandle( phase0Handle );
}
if ( !enlistmentSucceeded &&
null != localPhase1VolatileContainer &&
localPhase1VolatileContainer.voterHandle != IntPtr.Zero &&
needVoterEnlistment )
{
HandleTable.FreeHandle( localPhase1VolatileContainer.voterHandle );
}
}
return enlistment;
}
void TakeContainerLock(OletxPhase0VolatileEnlistmentContainer localPhase0VolatileContainer, ref bool phase0ContainerLockAcquired)
{
if (!phase0ContainerLockAcquired)
{
#pragma warning disable 0618
//@
Monitor.Enter(localPhase0VolatileContainer);
#pragma warning restore 0618
phase0ContainerLockAcquired = true;
}
}
internal OletxVolatileEnlistmentContainer AddDependentClone(bool delayCommit)
{
IVoterBallotShim voterBallotShim = null;
IPhase0EnlistmentShim shim2 = null;
bool flag2 = false;
bool flag = false;
OletxVolatileEnlistmentContainer container3 = null;
OletxPhase0VolatileEnlistmentContainer container = null;
OletxPhase1VolatileEnlistmentContainer target = null;
bool flag3 = false;
bool flag5 = false;
IntPtr zero = IntPtr.Zero;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
lock (this)
{
if (delayCommit)
{
if (this.phase0EnlistVolatilementContainerList == null)
{
this.phase0EnlistVolatilementContainerList = new ArrayList(1);
}
if (this.phase0EnlistVolatilementContainerList.Count == 0)
{
container = new OletxPhase0VolatileEnlistmentContainer(this);
flag = true;
}
else
{
container = this.phase0EnlistVolatilementContainerList[this.phase0EnlistVolatilementContainerList.Count - 1] as OletxPhase0VolatileEnlistmentContainer;
if (container != null)
{
this.TakeContainerLock(container, ref flag5);
}
if (!container.NewEnlistmentsAllowed)
{
this.ReleaseContainerLock(container, ref flag5);
container = new OletxPhase0VolatileEnlistmentContainer(this);
flag = true;
}
else
{
flag = false;
}
}
if (flag)
{
zero = HandleTable.AllocHandle(container);
}
}
else if (this.phase1EnlistVolatilementContainer == null)
{
target = new OletxPhase1VolatileEnlistmentContainer(this);
flag2 = true;
target.voterHandle = HandleTable.AllocHandle(target);
}
else
{
flag2 = false;
target = this.phase1EnlistVolatilementContainer;
}
try
{
if (container != null)
{
this.TakeContainerLock(container, ref flag5);
}
if (flag)
{
this.transactionShim.Phase0Enlist(zero, out shim2);
container.Phase0EnlistmentShim = shim2;
}
if (flag2)
{
this.OletxTransactionManagerInstance.dtcTransactionManagerLock.AcquireReaderLock(-1);
try
{
this.transactionShim.CreateVoter(target.voterHandle, out voterBallotShim);
flag3 = true;
}
finally
{
this.OletxTransactionManagerInstance.dtcTransactionManagerLock.ReleaseReaderLock();
}
target.VoterBallotShim = voterBallotShim;
}
if (delayCommit)
{
if (flag)
{
this.phase0EnlistVolatilementContainerList.Add(container);
}
container.AddDependentClone();
return(container);
}
if (flag2)
{
this.phase1EnlistVolatilementContainer = target;
}
target.AddDependentClone();
return(target);
}
catch (COMException exception)
{
OletxTransactionManager.ProxyException(exception);
throw;
}
return(container3);
}
}
finally
{
if (container != null)
{
this.ReleaseContainerLock(container, ref flag5);
}
if ((zero != IntPtr.Zero) && (container.Phase0EnlistmentShim == null))
{
HandleTable.FreeHandle(zero);
}
if ((!flag3 && (target != null)) && ((target.voterHandle != IntPtr.Zero) && flag2))
{
HandleTable.FreeHandle(target.voterHandle);
}
}
return(container3);
}
internal IPromotedEnlistment CommonEnlistVolatile(IEnlistmentNotificationInternal enlistmentNotification, EnlistmentOptions enlistmentOptions, OletxTransaction oletxTransaction)
{
OletxVolatileEnlistment enlistment = null;
bool flag2 = false;
bool flag = false;
OletxPhase0VolatileEnlistmentContainer target = null;
OletxPhase1VolatileEnlistmentContainer container = null;
IntPtr zero = IntPtr.Zero;
IVoterBallotShim voterBallotShim = null;
IPhase0EnlistmentShim shim = null;
bool flag3 = false;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
lock (this)
{
enlistment = new OletxVolatileEnlistment(enlistmentNotification, enlistmentOptions, oletxTransaction);
if ((enlistmentOptions & EnlistmentOptions.EnlistDuringPrepareRequired) != EnlistmentOptions.None)
{
if (this.phase0EnlistVolatilementContainerList == null)
{
this.phase0EnlistVolatilementContainerList = new ArrayList(1);
}
if (this.phase0EnlistVolatilementContainerList.Count == 0)
{
target = new OletxPhase0VolatileEnlistmentContainer(this);
flag = true;
}
else
{
target = this.phase0EnlistVolatilementContainerList[this.phase0EnlistVolatilementContainerList.Count - 1] as OletxPhase0VolatileEnlistmentContainer;
if (!target.NewEnlistmentsAllowed)
{
target = new OletxPhase0VolatileEnlistmentContainer(this);
flag = true;
}
else
{
flag = false;
}
}
if (flag)
{
zero = HandleTable.AllocHandle(target);
}
}
else if (this.phase1EnlistVolatilementContainer == null)
{
flag2 = true;
container = new OletxPhase1VolatileEnlistmentContainer(this)
{
voterHandle = HandleTable.AllocHandle(container)
};
}
else
{
flag2 = false;
container = this.phase1EnlistVolatilementContainer;
}
try
{
if (flag)
{
lock (target)
{
this.transactionShim.Phase0Enlist(zero, out shim);
target.Phase0EnlistmentShim = shim;
}
}
if (flag2)
{
this.transactionShim.CreateVoter(container.voterHandle, out voterBallotShim);
flag3 = true;
container.VoterBallotShim = voterBallotShim;
}
if ((enlistmentOptions & EnlistmentOptions.EnlistDuringPrepareRequired) != EnlistmentOptions.None)
{
target.AddEnlistment(enlistment);
if (flag)
{
this.phase0EnlistVolatilementContainerList.Add(target);
}
return(enlistment);
}
container.AddEnlistment(enlistment);
if (flag2)
{
this.phase1EnlistVolatilementContainer = container;
}
return(enlistment);
}
catch (COMException exception)
{
OletxTransactionManager.ProxyException(exception);
throw;
}
return(enlistment);
}
}
finally
{
if ((zero != IntPtr.Zero) && (target.Phase0EnlistmentShim == null))
{
HandleTable.FreeHandle(zero);
}
if ((!flag3 && (container != null)) && ((container.voterHandle != IntPtr.Zero) && flag2))
{
HandleTable.FreeHandle(container.voterHandle);
}
}
return(enlistment);
}
internal static void ShimNotificationCallback(object state, bool timeout)
{
// First we need to get the notification from the shim factory.
IntPtr enlistmentHandleIntPtr = IntPtr.Zero;
ShimNotificationType shimNotificationType = ShimNotificationType.None;
bool isSinglePhase = false;
bool abortingHint = false;
UInt32 prepareInfoSize = 0;
CoTaskMemHandle prepareInfoBuffer = null;
bool holdingNotificationLock = false;
bool cleanExit = false;
IDtcProxyShimFactory localProxyShimFactory = null;
if (DiagnosticTrace.Verbose)
{
MethodEnteredTraceRecord.Trace(SR.GetString(SR.TraceSourceOletx),
"OletxTransactionManager.ShimNotificationCallback"
);
}
// This lock doesn't really protect any of our data. It is here so that if an exception occurs
// while calling out to the app, we get an escalation to AppDomainUnload.
Thread.BeginCriticalRegion();
try
{
do
{
// Take a local copy of the proxyShimFactory because if we get an RM TMDown notification,
// we will still hold the critical section in that factory, but processing of the TMDown will
// cause replacement of the OletxTransactionManager.proxyShimFactory.
localProxyShimFactory = OletxTransactionManager.proxyShimFactory;
try
{
Thread.BeginThreadAffinity();
RuntimeHelpers.PrepareConstrainedRegions();
try
{
localProxyShimFactory.GetNotification(
out enlistmentHandleIntPtr,
out shimNotificationType,
out isSinglePhase,
out abortingHint,
out holdingNotificationLock,
out prepareInfoSize,
out prepareInfoBuffer
);
}
finally
{
if (holdingNotificationLock)
{
if ((HandleTable.FindHandle(enlistmentHandleIntPtr)) is OletxInternalResourceManager)
{
// In this case we know that the TM has gone down and we need to exchange
// the native lock for a managed lock.
processingTmDown = true;
#pragma warning disable 0618
//@
System.Threading.Monitor.Enter(OletxTransactionManager.proxyShimFactory);
#pragma warning restore 0618
}
else
{
holdingNotificationLock = false;
}
localProxyShimFactory.ReleaseNotificationLock();
}
Thread.EndThreadAffinity();
}
// If a TM down is being processed it is possible that the native lock
// has been exchanged for a managed lock. In that case we need to attempt
// to take a lock to hold up processing more events until the TM down
// processing is complete.
if (processingTmDown)
{
lock (OletxTransactionManager.proxyShimFactory)
{
// We don't do any work under this lock just make sure that we
// can take it.
}
}
if (ShimNotificationType.None != shimNotificationType)
{
Object target = HandleTable.FindHandle(enlistmentHandleIntPtr);
// Next, based on the notification type, cast the Handle accordingly and make
// the appropriate call on the enlistment.
switch (shimNotificationType)
{
case ShimNotificationType.Phase0RequestNotify:
{
try
{
OletxPhase0VolatileEnlistmentContainer ph0VolEnlistContainer = target as OletxPhase0VolatileEnlistmentContainer;
if (null != ph0VolEnlistContainer)
{
DiagnosticTrace.SetActivityId(
ph0VolEnlistContainer.TransactionIdentifier);
//CSDMain 91509 - We now synchronize this call with the AddDependentClone call in RealOleTxTransaction
ph0VolEnlistContainer.Phase0Request(abortingHint);
}
else
{
OletxEnlistment enlistment = target as OletxEnlistment;
if (null != enlistment)
{
DiagnosticTrace.SetActivityId(
enlistment.TransactionIdentifier);
enlistment.Phase0Request(abortingHint);
}
else
{
Environment.FailFast(SR.GetString(SR.InternalError));
}
}
}
finally
{
// We aren't going to get any more notifications on this.
HandleTable.FreeHandle(enlistmentHandleIntPtr);
}
break;
}
case ShimNotificationType.VoteRequestNotify:
{
OletxPhase1VolatileEnlistmentContainer ph1VolEnlistContainer = target as OletxPhase1VolatileEnlistmentContainer;
if (null != ph1VolEnlistContainer)
{
DiagnosticTrace.SetActivityId(
ph1VolEnlistContainer.TransactionIdentifier);
ph1VolEnlistContainer.VoteRequest();
}
else
{
Environment.FailFast(SR.GetString(SR.InternalError));
}
break;
}
case ShimNotificationType.CommittedNotify:
{
try
{
OutcomeEnlistment outcomeEnlistment = target as OutcomeEnlistment;
if (null != outcomeEnlistment)
{
DiagnosticTrace.SetActivityId(
outcomeEnlistment.TransactionIdentifier);
outcomeEnlistment.Committed();
}
else
{
OletxPhase1VolatileEnlistmentContainer ph1VolEnlistContainer = target as OletxPhase1VolatileEnlistmentContainer;
if (null != ph1VolEnlistContainer)
{
DiagnosticTrace.SetActivityId(
ph1VolEnlistContainer.TransactionIdentifier);
ph1VolEnlistContainer.Committed();
}
else
{
Environment.FailFast(SR.GetString(SR.InternalError));
}
}
}
finally
{
// We aren't going to get any more notifications on this.
HandleTable.FreeHandle(enlistmentHandleIntPtr);
}
break;
}
case ShimNotificationType.AbortedNotify:
{
try
{
OutcomeEnlistment outcomeEnlistment = target as OutcomeEnlistment;
if (null != outcomeEnlistment)
{
DiagnosticTrace.SetActivityId(
outcomeEnlistment.TransactionIdentifier);
outcomeEnlistment.Aborted();
}
else
{
OletxPhase1VolatileEnlistmentContainer ph1VolEnlistContainer = target as OletxPhase1VolatileEnlistmentContainer;
if (null != ph1VolEnlistContainer)
{
DiagnosticTrace.SetActivityId(
ph1VolEnlistContainer.TransactionIdentifier);
ph1VolEnlistContainer.Aborted();
}
// else
// Voters may receive notifications even
// in cases where they therwise respond
// negatively to the vote request. It is
// also not guaranteed that we will get a
// notification if we do respond negatively.
// The only safe thing to do is to free the
// Handle when we abort the transaction
// with a voter. These two things together
// mean that we cannot guarantee that this
// Handle will be alive when we get this
// notification.
}
}
finally
{
// We aren't going to get any more notifications on this.
HandleTable.FreeHandle(enlistmentHandleIntPtr);
}
break;
}
case ShimNotificationType.InDoubtNotify:
{
try
{
OutcomeEnlistment outcomeEnlistment = target as OutcomeEnlistment;
if (null != outcomeEnlistment)
{
DiagnosticTrace.SetActivityId(
outcomeEnlistment.TransactionIdentifier);
outcomeEnlistment.InDoubt();
}
else
{
OletxPhase1VolatileEnlistmentContainer ph1VolEnlistContainer = target as OletxPhase1VolatileEnlistmentContainer;
if (null != ph1VolEnlistContainer)
{
DiagnosticTrace.SetActivityId(
ph1VolEnlistContainer.TransactionIdentifier);
ph1VolEnlistContainer.InDoubt();
}
else
{
Environment.FailFast(SR.GetString(SR.InternalError));
}
}
}
finally
{
// We aren't going to get any more notifications on this.
HandleTable.FreeHandle(enlistmentHandleIntPtr);
}
break;
}
case ShimNotificationType.PrepareRequestNotify:
{
byte[] prepareInfo = new byte[prepareInfoSize];
Marshal.Copy(prepareInfoBuffer.DangerousGetHandle(), prepareInfo, 0, Convert.ToInt32(prepareInfoSize));
bool enlistmentDone = true;
try
{
OletxEnlistment enlistment = target as OletxEnlistment;
if (null != enlistment)
{
DiagnosticTrace.SetActivityId(
enlistment.TransactionIdentifier);
enlistmentDone = enlistment.PrepareRequest(
isSinglePhase,
prepareInfo
);
}
else
{
Environment.FailFast(SR.GetString(SR.InternalError));
}
}
finally
{
if (enlistmentDone)
{
HandleTable.FreeHandle(enlistmentHandleIntPtr);
}
}
break;
}
case ShimNotificationType.CommitRequestNotify:
{
try
{
OletxEnlistment enlistment = target as OletxEnlistment;
if (null != enlistment)
{
DiagnosticTrace.SetActivityId(
enlistment.TransactionIdentifier);
enlistment.CommitRequest();
}
else
{
Environment.FailFast(SR.GetString(SR.InternalError));
}
}
finally
{
// We aren't going to get any more notifications on this.
HandleTable.FreeHandle(enlistmentHandleIntPtr);
}
break;
}
case ShimNotificationType.AbortRequestNotify:
{
try
{
OletxEnlistment enlistment = target as OletxEnlistment;
if (null != enlistment)
{
DiagnosticTrace.SetActivityId(
enlistment.TransactionIdentifier);
enlistment.AbortRequest();
}
else
{
Environment.FailFast(SR.GetString(SR.InternalError));
}
}
finally
{
// We aren't going to get any more notifications on this.
HandleTable.FreeHandle(enlistmentHandleIntPtr);
}
break;
}
case ShimNotificationType.EnlistmentTmDownNotify:
{
try
{
OletxEnlistment enlistment = target as OletxEnlistment;
if (null != enlistment)
{
DiagnosticTrace.SetActivityId(
enlistment.TransactionIdentifier);
enlistment.TMDown();
}
else
{
Environment.FailFast(SR.GetString(SR.InternalError));
}
}
finally
{
// We aren't going to get any more notifications on this.
HandleTable.FreeHandle(enlistmentHandleIntPtr);
}
break;
}
case ShimNotificationType.ResourceManagerTmDownNotify:
{
OletxResourceManager resourceManager = target as OletxResourceManager;
try
{
if (null != resourceManager)
{
resourceManager.TMDown();
}
else
{
OletxInternalResourceManager internalResourceManager = target as OletxInternalResourceManager;
if (null != internalResourceManager)
{
internalResourceManager.TMDown();
}
else
{
Environment.FailFast(SR.GetString(SR.InternalError));
}
}
}
finally
{
HandleTable.FreeHandle(enlistmentHandleIntPtr);
}
// Note that we don't free the gchandle on the OletxResourceManager. These objects
// are not going to go away.
break;
}
default:
{
Environment.FailFast(SR.GetString(SR.InternalError));
break;
}
}
}
}
finally
{
if (null != prepareInfoBuffer)
{
prepareInfoBuffer.Close();
}
if (holdingNotificationLock)
{
holdingNotificationLock = false;
processingTmDown = false;
System.Threading.Monitor.Exit(OletxTransactionManager.proxyShimFactory);
}
}
}while (ShimNotificationType.None != shimNotificationType);
cleanExit = true;
}
finally
{
if (holdingNotificationLock)
{
holdingNotificationLock = false;
processingTmDown = false;
System.Threading.Monitor.Exit(OletxTransactionManager.proxyShimFactory);
}
if (!cleanExit && enlistmentHandleIntPtr != IntPtr.Zero)
{
HandleTable.FreeHandle(enlistmentHandleIntPtr);
}
Thread.EndCriticalRegion();
}
if (DiagnosticTrace.Verbose)
{
MethodExitedTraceRecord.Trace(SR.GetString(SR.TraceSourceOletx),
"OletxTransactionManager.ShimNotificationCallback"
);
}
}
