Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / clr / src / BCL / System / Threading / Interlocked.cs / 1 / Interlocked.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== namespace System.Threading { using System; using System.Security.Permissions; using System.Runtime.CompilerServices; using System.Runtime.ConstrainedExecution; // After much discussion, we decided the Interlocked class doesn't need // any HPA's for synchronization or external threading. They hurt C#'s // codegen for the yield keyword, and arguably they didn't protect much. // Instead, they penalized people (and compilers) for writing threadsafe // code. public static class Interlocked { /****************************** * Increment * Implemented: int * long *****************************/ [MethodImplAttribute(MethodImplOptions.InternalCall)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] public static extern int Increment(ref int location); [MethodImplAttribute(MethodImplOptions.InternalCall)] public static extern long Increment(ref long location); /****************************** * Decrement * Implemented: int * long *****************************/ [MethodImplAttribute(MethodImplOptions.InternalCall)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] public static extern int Decrement(ref int location); [MethodImplAttribute(MethodImplOptions.InternalCall)] public static extern long Decrement(ref long location); /****************************** * Exchange * Implemented: int * long * float * double * Object * IntPtr *****************************/ [MethodImplAttribute(MethodImplOptions.InternalCall)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] public static extern int Exchange(ref int location1, int value); [MethodImplAttribute(MethodImplOptions.InternalCall)] public static extern long Exchange(ref long location1, long value); [MethodImplAttribute(MethodImplOptions.InternalCall)] public static extern float Exchange(ref float location1, float value); [MethodImplAttribute(MethodImplOptions.InternalCall)] public static extern double Exchange(ref double location1, double value); [MethodImplAttribute(MethodImplOptions.InternalCall)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] public static extern Object Exchange(ref Object location1, Object value); [MethodImplAttribute(MethodImplOptions.InternalCall)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] public static extern IntPtr Exchange(ref IntPtr location1, IntPtr value); [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] [System.Runtime.InteropServices.ComVisible(false)] public static T Exchange(ref T location1, T value) where T : class { _Exchange(__makeref(location1), __makeref(value)); //Since value is a local we use trash its data on return // The Exchange replaces the data with new data // so after the return "value" contains the original location1 //See ExchangeGeneric for more details return value; } [MethodImplAttribute(MethodImplOptions.InternalCall)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] private static extern void _Exchange(TypedReference location1, TypedReference value); /****************************** * CompareExchange * Implemented: int * long * float * double * Object * IntPtr *****************************/ [MethodImplAttribute(MethodImplOptions.InternalCall)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] public static extern int CompareExchange(ref int location1, int value, int comparand); [MethodImplAttribute(MethodImplOptions.InternalCall)] public static extern long CompareExchange(ref long location1, long value, long comparand); [MethodImplAttribute(MethodImplOptions.InternalCall)] public static extern float CompareExchange(ref float location1, float value, float comparand); [MethodImplAttribute(MethodImplOptions.InternalCall)] public static extern double CompareExchange(ref double location1, double value, double comparand); [MethodImplAttribute(MethodImplOptions.InternalCall)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] public static extern Object CompareExchange(ref Object location1, Object value, Object comparand); [MethodImplAttribute(MethodImplOptions.InternalCall)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] public static extern IntPtr CompareExchange(ref IntPtr location1, IntPtr value, IntPtr comparand); [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] [System.Runtime.InteropServices.ComVisible(false)] public static T CompareExchange (ref T location1, T value, T comparand) where T : class { _CompareExchange(__makeref(location1), __makeref(value), comparand); //Since value is a local we use trash its data on return // The Exchange replaces the data with new data // so after the return "value" contains the original location1 //See CompareExchangeGeneric for more details return value; } [MethodImplAttribute(MethodImplOptions.InternalCall)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] private static extern void _CompareExchange(TypedReference location1, TypedReference value, Object comparand); /****************************** * Add * Implemented: int * long *****************************/ [MethodImplAttribute(MethodImplOptions.InternalCall)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] internal static extern int ExchangeAdd(ref int location1, int value); [MethodImplAttribute(MethodImplOptions.InternalCall)] internal static extern long ExchangeAdd(ref long location1, long value); [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] public static int Add(ref int location1, int value) { return ExchangeAdd(ref location1, value) + value; } [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] public static long Add(ref long location1, long value) { return ExchangeAdd(ref location1, value) + value; } /****************************** * Read *****************************/ public static long Read(ref long location) { return Interlocked.CompareExchange(ref location,0,0); } } }
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- DesignerVerb.cs
- linebase.cs
- Constraint.cs
- LoadedEvent.cs
- LinkedList.cs
- HierarchicalDataTemplate.cs
- DelegateSerializationHolder.cs
- InfoCardHelper.cs
- EventLogLink.cs
- shaperfactoryquerycachekey.cs
- MultipartIdentifier.cs
- FrameworkContentElement.cs
- SQLConvert.cs
- Page.cs
- MarkupWriter.cs
- SByteStorage.cs
- ManagedWndProcTracker.cs
- ComplexPropertyEntry.cs
- Positioning.cs
- WebPartCatalogCloseVerb.cs
- LockRecursionException.cs
- KerberosSecurityTokenProvider.cs
- ZipIOExtraFieldZip64Element.cs
- ViewManager.cs
- PageThemeCodeDomTreeGenerator.cs
- BamlLocalizerErrorNotifyEventArgs.cs
- CheckBoxAutomationPeer.cs
- PeerMaintainer.cs
- TextEditorSpelling.cs
- Unit.cs
- IconHelper.cs
- DataControlFieldCell.cs
- DomainUpDown.cs
- ArrayList.cs
- LowerCaseStringConverter.cs
- PeerTransportBindingElement.cs
- IntPtr.cs
- FunctionOverloadResolver.cs
- ReflectionHelper.cs
- AsyncCallback.cs
- AbstractSvcMapFileLoader.cs
- Asn1IntegerConverter.cs
- DecoderReplacementFallback.cs
- FacetValues.cs
- LowerCaseStringConverter.cs
- Timer.cs
- CanonicalFormWriter.cs
- KeyboardInputProviderAcquireFocusEventArgs.cs
- XmlText.cs
- DescendentsWalkerBase.cs
- PlatformCulture.cs
- XamlFigureLengthSerializer.cs
- MethodSet.cs
- Selection.cs
- MetadataSerializer.cs
- StoreAnnotationsMap.cs
- SpoolingTaskBase.cs
- TextViewBase.cs
- ToolStripItemRenderEventArgs.cs
- CodeComment.cs
- ListItemParagraph.cs
- HttpProfileBase.cs
- RoutedUICommand.cs
- Marshal.cs
- _SslStream.cs
- OleStrCAMarshaler.cs
- HideDisabledControlAdapter.cs
- Privilege.cs
- AsyncWaitHandle.cs
- AnnotationComponentManager.cs
- Cursors.cs
- SqlClientFactory.cs
- BasicCellRelation.cs
- SchemaObjectWriter.cs
- TraceData.cs
- PeerDefaultCustomResolverClient.cs
- UriParserTemplates.cs
- Annotation.cs
- SweepDirectionValidation.cs
- Attachment.cs
- TextEditorParagraphs.cs
- TreeChangeInfo.cs
- ITreeGenerator.cs
- ArgumentNullException.cs
- FixedFlowMap.cs
- VisualTarget.cs
- ElementProxy.cs
- PartialClassGenerationTask.cs
- DocumentPaginator.cs
- URI.cs
- AccessViolationException.cs
- ServiceOperationParameter.cs
- ViewPort3D.cs
- ComponentChangingEvent.cs
- SynchronizedDispatch.cs
- Peer.cs
- RankException.cs
- BeginGetFileNameFromUserRequest.cs
- ActivationArguments.cs
- ThreadExceptionDialog.cs