Pushes a string into the trace stack so that log messages appear with the 'context' set to the information provided. The operation named should be performed by the current thread and the IDisposable object returned should be disposed when the operation completes.
Syntax
Parameters
- format
- args
Return Value
An IDisposable object that should be destroyed by calling the Dispose() method when the activity is complete.
Example
Log/Test/ThreadedLogTest.cs
| C# |  Copy Code |
|---|
Log.LogWrite += new LogEventHandler(Block_LogWrite);
try
{
using (Log.Start("Blocking Test"))
{
//the start above should already get us in a blocked state:
Assert.IsTrue(_isBlocked.WaitOne(300, false));
//regaurdless, we should still get the first message
EventData msg = NextMessage;
Assert.AreEqual("Start Blocking Test", msg.Message);
//Now let's just go nuts on the logger...
for (int i = 0; i < 100; i++)
Log.Write("Buffering at {0}%.", i);
Thread.Sleep(100);
Assert.AreEqual(0, _lastMessages.Count);
_releaseBlock.Set();
Thread.Sleep(100);
Assert.IsFalse(_isBlocked.WaitOne(0, false));
for (int i = 0; i < 100; i++)
Assert.IsTrue(NextMessage.Message.StartsWith("Buffering at"));
}
}
finally
{
Log.LogWrite -= new LogEventHandler(Block_LogWrite);
} |
| VB.NET | Copy Code |
|---|
Log.LogWrite += New LogEventHandler(Block_LogWrite)
Try
Using Log.Start("Blocking Test")
'the start above should already get us in a blocked state:
Assert.IsTrue(_isBlocked.WaitOne(300, False))
'regaurdless, we should still get the first message
Dim msg As EventData = NextMessage
Assert.AreEqual("Start Blocking Test", msg.Message)
'Now let's just go nuts on the logger...
Dim i As Integer = 0
While i < 100
Log.Write("Buffering at {0}%.", i)
System.Math.Max(System.Threading.Interlocked.Increment(i),i - 1)
End While
Thread.Sleep(100)
Assert.AreEqual(0, _lastMessages.Count)
_releaseBlock.[Set]()
Thread.Sleep(100)
Assert.IsFalse(_isBlocked.WaitOne(0, False))
Dim i As Integer = 0
While i < 100
Assert.IsTrue(NextMessage.Message.StartsWith("Buffering at"))
System.Math.Max(System.Threading.Interlocked.Increment(i),i - 1)
End While
End Using
Finally
Log.LogWrite -= New LogEventHandler(Block_LogWrite)
End Try |
Requirements
Target Platforms: Windows XP, Windows Server 2003, Windows Vista, Windows Server 2008, Windows 7
See Also
