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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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namespace Implab.Diagnostics {
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public class TraceContext {
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LogicalOperation m_currentOperation;
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readonly LogicalOperation m_traceBound;
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readonly int m_threadId;
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readonly TraceContext m_parent;
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readonly static object _consoleLock = new object();
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[ThreadStatic]
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static TraceContext _current;
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public static TraceContext Current {
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get {
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if (_current == null)
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_current = new TraceContext();
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return _current;
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}
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}
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TraceContext(TraceContext context) {
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if (context == null)
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throw new ArgumentNullException("context");
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m_parent = context;
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m_currentOperation = context.CurrentOperation;
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m_traceBound = context.CurrentOperation;
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m_threadId = Thread.CurrentThread.ManagedThreadId;
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LogEvent(TraceEventType.Transfer, "FORK {0}", context.ThreadId);
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}
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TraceContext() {
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m_currentOperation = new LogicalOperation();
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m_traceBound = m_currentOperation;
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m_threadId = Thread.CurrentThread.ManagedThreadId;
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}
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public static void Transfer(TraceContext from) {
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_current = from == null ? new TraceContext() : new TraceContext(from);
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}
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public TraceContext ParentContext {
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get {
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return m_parent;
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}
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}
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public LogicalOperation CurrentOperation {
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get {
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return m_currentOperation;
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}
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}
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public LogicalOperation TraceBound {
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get {
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return m_traceBound;
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}
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}
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public int ThreadId {
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get {
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return m_threadId;
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}
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}
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public void StartLogicalOperation() {
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StartLogicalOperation(null);
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}
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public void StartLogicalOperation(string name) {
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LogEvent(TraceEventType.OperationStarted, "{0}", name);
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m_currentOperation = new LogicalOperation(name, m_currentOperation);
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}
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public void EndLogicalOperation() {
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if (m_traceBound == m_currentOperation) {
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LogEvent(TraceEventType.Error, "Trying to end the operation which isn't belongs to current trace");
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} else {
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var op = m_currentOperation;
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m_currentOperation = m_currentOperation.Parent;
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LogEvent(TraceEventType.OperationCompleted, "{0} {1} ms", op.Name, op.Duration);
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}
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}
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void LogEvent(TraceEventType type, string format, params object[] args) {
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LogChannel<TraceEvent>.Default.LogEvent(this, TraceEvent.Create(type, format, args));
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}
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}
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}
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