Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / ndp / fx / src / DataOracleClient / System / Data / OracleClient / OciEnlistContext.cs / 1 / OciEnlistContext.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- namespace System.Data.OracleClient { using System; using System.Data.Common; using System.Diagnostics; using System.Runtime.CompilerServices; using System.Runtime.InteropServices; using System.Threading; using SysTx = System.Transactions; using System.Runtime.ConstrainedExecution; sealed internal class OciEnlistContext : SafeHandle { private OciServiceContextHandle _serviceContextHandle; internal OciEnlistContext(byte[] userName, byte[] password, byte[] serverName, OciServiceContextHandle serviceContextHandle, OciErrorHandle errorHandle) : base(IntPtr.Zero, true) { RuntimeHelpers.PrepareConstrainedRegions(); try {} finally { _serviceContextHandle = serviceContextHandle; int rc = 0; try { rc = TracedNativeMethods.OraMTSEnlCtxGet(userName, password, serverName, _serviceContextHandle, errorHandle, out base.handle); } catch (DllNotFoundException e) { throw ADP.DistribTxRequiresOracleServicesForMTS(e); } if (0 != rc) { OracleException.Check(errorHandle, rc); } // Make sure the transaction context is disposed before the service // context is. serviceContextHandle.AddRef(); } } public override bool IsInvalid { get { return (IntPtr.Zero == base.handle); } } internal void Join(OracleInternalConnection internalConnection, SysTx.Transaction indigoTransaction) { SysTx.IDtcTransaction oleTxTransaction = ADP.GetOletxTransaction(indigoTransaction); int rc = TracedNativeMethods.OraMTSJoinTxn(this, oleTxTransaction); if (0 != rc) { OracleException.Check(rc, internalConnection); } } override protected bool ReleaseHandle() { // NOTE: The SafeHandle class guarantees this will be called exactly once. IntPtr ptr = base.handle; base.handle = IntPtr.Zero; if (IntPtr.Zero != ptr) { TracedNativeMethods.OraMTSEnlCtxRel(ptr); } // OK, now we can release the service context. if (null != _serviceContextHandle) { _serviceContextHandle.Release(); _serviceContextHandle = null; } return true; } internal static void SafeDispose(ref OciEnlistContext ociEnlistContext) { // Safely disposes of the handle (even if it is already null) and // then nulls it out. if (null != ociEnlistContext) { ociEnlistContext.Dispose(); } ociEnlistContext = null; } //--------------------------------------------------------------------- static internal IntPtr HandleValueToTrace (OciEnlistContext handle) { return handle.DangerousGetHandle(); // for tracing purposes, it's safe to just print this -- no handle recycling issues. } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- namespace System.Data.OracleClient { using System; using System.Data.Common; using System.Diagnostics; using System.Runtime.CompilerServices; using System.Runtime.InteropServices; using System.Threading; using SysTx = System.Transactions; using System.Runtime.ConstrainedExecution; sealed internal class OciEnlistContext : SafeHandle { private OciServiceContextHandle _serviceContextHandle; internal OciEnlistContext(byte[] userName, byte[] password, byte[] serverName, OciServiceContextHandle serviceContextHandle, OciErrorHandle errorHandle) : base(IntPtr.Zero, true) { RuntimeHelpers.PrepareConstrainedRegions(); try {} finally { _serviceContextHandle = serviceContextHandle; int rc = 0; try { rc = TracedNativeMethods.OraMTSEnlCtxGet(userName, password, serverName, _serviceContextHandle, errorHandle, out base.handle); } catch (DllNotFoundException e) { throw ADP.DistribTxRequiresOracleServicesForMTS(e); } if (0 != rc) { OracleException.Check(errorHandle, rc); } // Make sure the transaction context is disposed before the service // context is. serviceContextHandle.AddRef(); } } public override bool IsInvalid { get { return (IntPtr.Zero == base.handle); } } internal void Join(OracleInternalConnection internalConnection, SysTx.Transaction indigoTransaction) { SysTx.IDtcTransaction oleTxTransaction = ADP.GetOletxTransaction(indigoTransaction); int rc = TracedNativeMethods.OraMTSJoinTxn(this, oleTxTransaction); if (0 != rc) { OracleException.Check(rc, internalConnection); } } override protected bool ReleaseHandle() { // NOTE: The SafeHandle class guarantees this will be called exactly once. IntPtr ptr = base.handle; base.handle = IntPtr.Zero; if (IntPtr.Zero != ptr) { TracedNativeMethods.OraMTSEnlCtxRel(ptr); } // OK, now we can release the service context. if (null != _serviceContextHandle) { _serviceContextHandle.Release(); _serviceContextHandle = null; } return true; } internal static void SafeDispose(ref OciEnlistContext ociEnlistContext) { // Safely disposes of the handle (even if it is already null) and // then nulls it out. if (null != ociEnlistContext) { ociEnlistContext.Dispose(); } ociEnlistContext = null; } //--------------------------------------------------------------------- static internal IntPtr HandleValueToTrace (OciEnlistContext handle) { return handle.DangerousGetHandle(); // for tracing purposes, it's safe to just print this -- no handle recycling issues. } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- TypeDescriptor.cs
- DataGridColumnHeaderCollection.cs
- ReferenceSchema.cs
- ProfileService.cs
- DataGridViewRowPrePaintEventArgs.cs
- SchemaNamespaceManager.cs
- SelectionRangeConverter.cs
- ResolveCriteria.cs
- UpdatePanelTriggerCollection.cs
- BasicCommandTreeVisitor.cs
- OperationParameterInfoCollection.cs
- TextTreeTextNode.cs
- CallbackValidatorAttribute.cs
- XmlEntity.cs
- LinkGrep.cs
- WebPartConnectionsCancelEventArgs.cs
- ObjectQuery.cs
- TdsParameterSetter.cs
- ActivityCodeDomReferenceService.cs
- PropertyGridView.cs
- TextEffectCollection.cs
- MessageSecurityException.cs
- NamespaceInfo.cs
- SafeSecurityHandles.cs
- DbProviderFactory.cs
- SimpleBitVector32.cs
- MULTI_QI.cs
- BrowserCapabilitiesCodeGenerator.cs
- GZipStream.cs
- GeneralTransform3DGroup.cs
- Style.cs
- TypeDelegator.cs
- HeaderLabel.cs
- DriveInfo.cs
- TTSVoice.cs
- TraceContextRecord.cs
- TimeSpan.cs
- MultiPropertyDescriptorGridEntry.cs
- DataGridViewCellEventArgs.cs
- WindowsNonControl.cs
- Image.cs
- SimpleMailWebEventProvider.cs
- DesignerActionVerbList.cs
- CompiledQueryCacheEntry.cs
- AnnotationStore.cs
- ConvertersCollection.cs
- Attributes.cs
- GeneralTransform.cs
- DictionaryEntry.cs
- GridViewHeaderRowPresenter.cs
- XmlExtensionFunction.cs
- ClientType.cs
- TextEditorContextMenu.cs
- DataObjectPastingEventArgs.cs
- OdbcEnvironment.cs
- RuleConditionDialog.cs
- CultureTable.cs
- CompModSwitches.cs
- XmlSchemaSimpleContent.cs
- FirstMatchCodeGroup.cs
- MiniCustomAttributeInfo.cs
- DefaultBinder.cs
- SqlDesignerDataSourceView.cs
- Operator.cs
- WebPartCloseVerb.cs
- Exceptions.cs
- OrderedHashRepartitionStream.cs
- ValidatorCollection.cs
- WindowsTreeView.cs
- PageSettings.cs
- XmlSchemaComplexContentRestriction.cs
- WindowsButton.cs
- InputMethod.cs
- UnknownMessageReceivedEventArgs.cs
- BatchWriter.cs
- TabItemAutomationPeer.cs
- CookieProtection.cs
- EffectiveValueEntry.cs
- FloaterParaClient.cs
- HandlerBase.cs
- XmlSchemaNotation.cs
- EventTask.cs
- UpDownEvent.cs
- SHA256Managed.cs
- PriorityQueue.cs
- CodeFieldReferenceExpression.cs
- MsmqBindingMonitor.cs
- MenuItemCollection.cs
- NavigationWindow.cs
- SectionUpdates.cs
- UriSection.cs
- PackageRelationshipSelector.cs
- HttpCacheVaryByContentEncodings.cs
- PagedDataSource.cs
- XmlEnumAttribute.cs
- CodeAttributeArgumentCollection.cs
- DurableDispatcherAddressingFault.cs
- DataGridViewCellStyleConverter.cs
- ProxyWebPartConnectionCollection.cs
- Path.cs