lprun and log4net

nescafe

I've had some scheduled LINQPad tasks scripts hanging and it was related to this single line:

(Nuget: log4net)

log4net.LogicalThreadContext.Properties["host"] = "test";

Save a LINQ file in C# statements mode with log4net package and the above line. lprun will run indefinitely.
Other log4net commands work fine. I can isolate the problem to just this single line.

Any clue why lprun is hanging?

DenisValeev

Easily reproducible with this script: http://share.linqpad.net/8vljpg.linq

The linqpad is stuck here:

LINQPad.exe!LINQPad.ExecutionModel.Server.SingleThreadExecuter.Work
@ _workSignal.WaitOne(); (with infinite timeout)

LINQPad.exe!LINQPad.CmdLineAppHost.Run
@ _done.WaitOne(); (with infinite timeout)

---
_workSignal.WaitOne();

This should be re-written to periodically check if the underlying process (user query) is alive and kicking.

DenisValeev

As a workaround you need to have the Main method in async mode.
async Task Main() { log4net.LogicalThreadContext.Properties["host"] = "test"; }

Seems like a deadlock on the thread context when the root is not async.