EventMetadata.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 / EventMetadata.cs / 1305376 / EventMetadata.cs
                        

                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
/*============================================================
** 
** Class: EventMetadata 
**
** Purpose: 
** This public class describes the metadata for a specific event
** raised by Provider. An instance of this class is obtained from
** ProviderMetadata class.
** 
============================================================*/
 
using System.Globalization; 
using System.Collections.Generic;
using System.Runtime.InteropServices; 
using System.Text;
using System.Diagnostics.CodeAnalysis;

namespace System.Diagnostics.Eventing.Reader { 
    /// 
    /// Event Metadata 
    ///  
    [System.Security.Permissions.HostProtection(MayLeakOnAbort = true)]
    public sealed class EventMetadata { 
        private long id;
        private byte version;
        private byte channelId;
        private byte level; 
        private short opcode;
        private int task; 
        private long keywords; 
        private string template;
        private string description; 

        ProviderMetadata pmReference;

        internal EventMetadata(uint id, byte version, byte channelId, 
                 byte level, byte opcode, short task, long keywords,
                 string template, string description, ProviderMetadata pmReference) { 
            this.id = id; 
            this.version = version;
            this.channelId = channelId; 
            this.level = level;
            this.opcode = opcode;
            this.task = task;
            this.keywords = keywords; 
            this.template = template;
            this.description = description; 
            this.pmReference = pmReference; 
        }
 
        //
        // Max value will be UINT32.MaxValue - it is a long because this property
        // is really a UINT32.  The legacy API allows event message ids to be declared
        // as UINT32 and these event/messages may be migrated into a Provider's 
        // manifest as UINT32.  Note that EventRecord ids are
        // still declared as int, because those ids max value is UINT16.MaxValue 
        // and rest of the bits of the legacy event id would be stored in 
        // Qualifiers property.
        // 
        public long Id {
            get {
                return this.id;
            } 
        }
 
        public byte Version { 
            get {
                return this.version; 
            }
        }

        public EventLogLink LogLink { 
            get {
                return new EventLogLink((uint)this.channelId, this.pmReference); 
            } 
        }
 
        public EventLevel Level {
            get {
                return new EventLevel(this.level, this.pmReference);
            } 
        }
 
        [SuppressMessage("Microsoft.Naming", "CA1702:CompoundWordsShouldBeCasedCorrectly", MessageId = "Opcode", Justification = "[....]: Shipped public in 3.5, breaking change to fix now.")] 
        public EventOpcode Opcode {
            get { 
                return new EventOpcode(this.opcode, this.pmReference);
            }
        }
 
        public EventTask Task {
            get { 
                return new EventTask(this.task, this.pmReference); 
            }
        } 


        public IEnumerable Keywords {
            get { 
                List list = new List();
 
                ulong theKeywords = (ulong)this.keywords; 
                ulong mask = 0x8000000000000000;
 
                //for every bit
                //for (int i = 0; i < 64 && theKeywords != 0; i++)
                for (int i = 0; i < 64; i++) {
                    //if this bit is set 
                    if ((theKeywords & mask) > 0) {
                        //the mask is the keyword we will be searching for. 
                        list.Add(new EventKeyword((long)mask, this.pmReference)); 
                        //theKeywords = theKeywords - mask;
                    } 
                    //modify the mask to check next bit.
                    mask = mask >> 1;
                }
 
                return list;
            } 
        } 

        public string Template { 
            get {
                return this.template;
            }
        } 

        public string Description { 
            get { 
                return this.description;
            } 
        }
    }
}

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

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