EventTask.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Core / System / Diagnostics / Eventing / Reader / EventTask.cs / 1305376 / EventTask.cs
                        

                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
/*============================================================
** 
** Class: EventTask 
**
** Purpose: 
** This public class describes the metadata for a specific Task
** defined by a Provider. An instance of this class is obtained
** from a ProviderMetadata object.
** 
============================================================*/
 
using System.Collections.Generic; 

 
namespace System.Diagnostics.Eventing.Reader {

    /// 
    /// Describes the metadata for a specific Task defined by a Provider. 
    /// An instance of this class is obtained from a ProviderMetadata object.
    ///  
    [System.Security.Permissions.HostProtection(MayLeakOnAbort = true)] 
    public sealed class EventTask {
        private int value; 
        private string name;
        private string displayName;
        private Guid guid;
        private bool dataReady; 
        ProviderMetadata pmReference;
        object syncObject; 
 

        //called from EventMetadata 
        internal EventTask(int value, ProviderMetadata pmReference) {
            this.value = value;
            this.pmReference = pmReference;
            this.syncObject = new object(); 
        }
 
        //called from ProviderMetadata 
        internal EventTask(string name, int value, string displayName, Guid guid) {
            this.value = value; 
            this.name = name;
            this.displayName = displayName;
            this.guid = guid;
            this.dataReady = true; 
            this.syncObject = new object();
        } 
 
        internal void PrepareData() {
            lock (syncObject) { 
                if (dataReady == true) return;

                IEnumerable result = pmReference.Tasks;
 
                this.name = null;
                this.displayName = null; 
                this.guid = Guid.Empty; 
                this.dataReady = true;
 
                foreach (EventTask task in result) {
                    if (task.Value == this.value) {
                        this.name = task.Name;
                        this.displayName = task.DisplayName; 
                        this.guid = task.EventGuid;
                        this.dataReady = true; 
                        break; 
                    }
                } 
            }
        }

        public string Name { 
            get {
                PrepareData(); 
                return this.name; 
            }
        } 

        public int Value {
            get {
                return this.value; 
            }
        } 
 
        public string DisplayName {
            get { 
                PrepareData();
                return this.displayName;
            }
        } 

        public Guid EventGuid { 
            get { 
                PrepareData();
                return this.guid; 
            }
        }
    }
 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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