Code:
/ FXUpdate3074 / FXUpdate3074 / 1.1 / untmp / whidbey / QFE / ndp / clr / src / BCL / System / Diagnostics / log.cs / 1 / log.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== namespace System.Diagnostics { using System.Runtime.Remoting; using System; using System.Security.Permissions; using System.IO; using System.Collections; using System.Runtime.CompilerServices; using Encoding = System.Text.Encoding; using System.Runtime.Versioning; // LogMessageEventHandlers are triggered when a message is generated which is // "on" per its switch. // // By default, the debugger (if attached) is the only event handler. // There is also a "built-in" console device which can be enabled // programatically, by registry (specifics....) or environment // variables. [Serializable()] [HostProtection(Synchronization=true, ExternalThreading=true)] internal delegate void LogMessageEventHandler(LoggingLevels level, LogSwitch category, String message, StackTrace location); // LogSwitchLevelHandlers are triggered when the level of a LogSwitch is modified // [Serializable()] internal delegate void LogSwitchLevelHandler(LogSwitch ls, LoggingLevels newLevel); internal static class Log { // Switches allow relatively fine level control of which messages are // actually shown. Normally most debugging messages are not shown - the // user will typically enable those which are relevant to what is being // investigated. // // An attached debugger can enable or disable which messages will // actually be reported to the user through the COM+ debugger // services API. This info is communicated to the runtime so only // desired events are actually reported to the debugger. internal static Hashtable m_Hashtable; private static bool m_fConsoleDeviceEnabled; private static Stream[] m_rgStream; private static int m_iNumOfStreamDevices; private static int m_iStreamArraySize; //private static StreamWriter pConsole; internal static int iNumOfSwitches; //private static int iNumOfMsgHandlers; //private static int iMsgHandlerArraySize; private static LogMessageEventHandler _LogMessageEventHandler; private static LogSwitchLevelHandler _LogSwitchLevelHandler; private static Object locker; // Constant representing the global switch public static readonly LogSwitch GlobalSwitch; static Log() { m_Hashtable = new Hashtable(); m_fConsoleDeviceEnabled = false; m_rgStream = null; m_iNumOfStreamDevices = 0; m_iStreamArraySize = 0; //pConsole = null; //iNumOfMsgHandlers = 0; //iMsgHandlerArraySize = 0; locker = new Object(); // allocate the GlobalSwitch object GlobalSwitch = new LogSwitch ("Global", "Global Switch for this log"); GlobalSwitch.MinimumLevel = LoggingLevels.ErrorLevel; } public static void AddOnLogMessage(LogMessageEventHandler handler) { lock (locker) _LogMessageEventHandler = (LogMessageEventHandler) MulticastDelegate.Combine(_LogMessageEventHandler, handler); } public static void RemoveOnLogMessage(LogMessageEventHandler handler) { lock (locker) _LogMessageEventHandler = (LogMessageEventHandler) MulticastDelegate.Remove(_LogMessageEventHandler, handler); } public static void AddOnLogSwitchLevel(LogSwitchLevelHandler handler) { lock (locker) _LogSwitchLevelHandler = (LogSwitchLevelHandler) MulticastDelegate.Combine(_LogSwitchLevelHandler, handler); } public static void RemoveOnLogSwitchLevel(LogSwitchLevelHandler handler) { lock (locker) _LogSwitchLevelHandler = (LogSwitchLevelHandler) MulticastDelegate.Remove(_LogSwitchLevelHandler, handler); } internal static void InvokeLogSwitchLevelHandlers (LogSwitch ls, LoggingLevels newLevel) { LogSwitchLevelHandler handler = _LogSwitchLevelHandler; if (handler != null) handler(ls, newLevel); } // Property to Enable/Disable ConsoleDevice. Enabling the console device // adds the console device as a log output, causing any // log messages which make it through filters to be written to the // application console. The console device is enabled by default if the // ??? registry entry or ??? environment variable is set. public static bool IsConsoleEnabled { get { return m_fConsoleDeviceEnabled; } set { m_fConsoleDeviceEnabled = value; } } // AddStream uses the given stream to create and add a new log // device. Any log messages which make it through filters will be written // to the stream. // public static void AddStream(Stream stream) { if (stream==null) throw new ArgumentNullException("stream"); if (m_iStreamArraySize <= m_iNumOfStreamDevices) { // increase array size in chunks of 4 Stream[] newArray = new Stream [m_iStreamArraySize+4]; // copy the old array objects into the new one. if (m_iNumOfStreamDevices > 0) Array.Copy(m_rgStream, newArray, m_iNumOfStreamDevices); m_iStreamArraySize += 4; m_rgStream = newArray; } m_rgStream [m_iNumOfStreamDevices++] = stream; } // Generates a log message. If its switch (or a parent switch) allows the // level for the message, it is "broadcast" to all of the log // devices. // public static void LogMessage(LoggingLevels level, String message) { LogMessage (level, GlobalSwitch, message); } // Generates a log message. If its switch (or a parent switch) allows the // level for the message, it is "broadcast" to all of the log // devices. // [ResourceExposure(ResourceScope.None)] [ResourceConsumption(ResourceScope.Process, ResourceScope.Process)] public static void LogMessage(LoggingLevels level, LogSwitch logswitch, String message) { if (logswitch == null) throw new ArgumentNullException ("LogSwitch"); if (level < 0) throw new ArgumentOutOfRangeException("level", Environment.GetResourceString("ArgumentOutOfRange_NeedNonNegNum")); // Is logging for this level for this switch enabled? if (logswitch.CheckLevel (level) == true) { // Send message for logging // first send it to the debugger Debugger.Log ((int) level, logswitch.strName, message); // Send to the console device if (m_fConsoleDeviceEnabled) { Console.Write(message); } // Send it to the streams for (int i=0; i
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- Root.cs
- FrameworkTextComposition.cs
- MetadataCollection.cs
- SelfIssuedTokenFactoryCredential.cs
- ResourceDictionary.cs
- DrawingContextWalker.cs
- TcpClientChannel.cs
- EditorPartCollection.cs
- SqlTrackingWorkflowInstance.cs
- CharacterString.cs
- EntityProxyFactory.cs
- QilValidationVisitor.cs
- AccessText.cs
- BaseTreeIterator.cs
- XPathScanner.cs
- DefaultProxySection.cs
- AttributeEmitter.cs
- UInt64.cs
- ListViewDeleteEventArgs.cs
- ReservationNotFoundException.cs
- Configuration.cs
- ConditionalAttribute.cs
- OletxVolatileEnlistment.cs
- ManagedWndProcTracker.cs
- HelpInfo.cs
- CreateParams.cs
- GraphicsPathIterator.cs
- TextRunTypographyProperties.cs
- Cursors.cs
- WebContext.cs
- GridViewItemAutomationPeer.cs
- CompilerParameters.cs
- CngKey.cs
- WebResourceAttribute.cs
- Int32RectValueSerializer.cs
- BaseCAMarshaler.cs
- UserInitiatedNavigationPermission.cs
- Helper.cs
- _ServiceNameStore.cs
- SQLInt64.cs
- CurrencyWrapper.cs
- WorkflowView.cs
- QuaternionAnimation.cs
- EntryPointNotFoundException.cs
- OleDbStruct.cs
- SEHException.cs
- DataGridItemEventArgs.cs
- RNGCryptoServiceProvider.cs
- COM2Properties.cs
- DebugHandleTracker.cs
- TextTabProperties.cs
- DoubleLink.cs
- Underline.cs
- RunWorkerCompletedEventArgs.cs
- Types.cs
- StrongNameIdentityPermission.cs
- RedistVersionInfo.cs
- TemplateNameScope.cs
- CodeValidator.cs
- CmsUtils.cs
- Point3DKeyFrameCollection.cs
- MouseDevice.cs
- TableStyle.cs
- SchemaNames.cs
- GifBitmapDecoder.cs
- GuidConverter.cs
- Oid.cs
- ParsedRoute.cs
- SqlTopReducer.cs
- OutputChannel.cs
- FilterQuery.cs
- IdnElement.cs
- StylusButtonEventArgs.cs
- ProcessHost.cs
- SqlServer2KCompatibilityAnnotation.cs
- GZipDecoder.cs
- ListViewItem.cs
- ListBoxItemAutomationPeer.cs
- StreamingContext.cs
- AutomationEvent.cs
- DataSpaceManager.cs
- SafeFileMapViewHandle.cs
- RemoteWebConfigurationHostStream.cs
- WorkItem.cs
- ReflectPropertyDescriptor.cs
- TreeViewAutomationPeer.cs
- NCryptNative.cs
- CollectionBase.cs
- KeyedCollection.cs
- XmlWellformedWriterHelpers.cs
- EventRoute.cs
- AppDomainProtocolHandler.cs
- SynchronizedInputHelper.cs
- IdnElement.cs
- CheckBoxFlatAdapter.cs
- RbTree.cs
- SchemaMapping.cs
- MetabaseSettingsIis7.cs
- InsufficientMemoryException.cs
- RootDesignerSerializerAttribute.cs