Hosting Process "File Lock"'s are causing Dynamic Proxy to fail on win10-x64

Dynamic proxy uses static assembly names for generation of proxy types. This is very much needed when it comes to strong naming assemblies and declaring friend assemblies. The trouble is you cannot control what hosting processes(or consumers of Castle DP) do.

A file lock on "CastleDynProxy2.dll" via a test run in Resharper, will cause an I/O collision when running tests via the console.

Is there perhaps a way of creating a "bottom up" way of revealing this?

[jonorossi]

This is only a problem for unit tests because they persist their dynamic assembly to the test working directory so the peverify tool can be automatically run over the assembly.

Oh, I thought you said you had this problem also when running on the build server which doesn't have VS or ReSharper.

Does this only occur when you are running unit tests at the same time in both ReSharper and CLI? Or is a ReSharper process holding a file lock just sitting there idle?

This might also be a problem in appveyor.

See here: https://ci.appveyor.com/project/fir3pho3nixx/core/build/4.0.37

Errors, Failures and Warnings

1. Failed : Castle.DynamicProxy.Tests.ModuleScopeTestCase
   One or more child tests had errors
2. Error : Castle.DynamicProxy.Tests.ModuleScopeTestCase.SaveWithPath
   System.IO.IOException : The process cannot access the file 'C:\Users\appveyor\AppData\Local\Temp\1\tmp2388.tmp' because it is being used by another process.
   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.IO.File.InternalDelete(String path, Boolean checkHost)
   at Castle.DynamicProxy.ModuleScope.SaveAssembly(Boolean strongNamed)
   at Castle.DynamicProxy.Tests.ModuleScopeTestCase.SaveWithPath()

It happens when resharper is sitting there idle. Sometimes ...

[jonorossi]

The error with ModuleScopeTestCase.SaveWithPath is strange, nothing outside the unit test uses the same temp file name, so either it is blocking itself or there is anti-virus running (which AppVeyor say they don't have).

[Test]
public void SaveWithPath()
{
	var strongModulePath = Path.GetTempFileName();    //<<<<<<<<<<
	var weakModulePath = Path.GetTempFileName();    //<<<<<<<<<<

	File.Delete(strongModulePath);
	File.Delete(weakModulePath);

	Assert.IsFalse(File.Exists(strongModulePath));
	Assert.IsFalse(File.Exists(weakModulePath));

	var scope = new ModuleScope(true,false, "Strong", strongModulePath, "Weak", weakModulePath);
	scope.ObtainDynamicModuleWithStrongName();
	scope.ObtainDynamicModuleWithWeakName();

	scope.SaveAssembly(true);
	scope.SaveAssembly(false);

	Assert.IsTrue(File.Exists(strongModulePath));
	Assert.IsTrue(File.Exists(weakModulePath));

	File.Delete(strongModulePath);
	File.Delete(weakModulePath);
}

Will pick this up once I have made some more progress on #241

I think I have some idea's.

http://stackoverflow.com/questions/317071/how-do-i-find-out-which-process-is-locking-a-file-using-net

http://stackoverflow.com/questions/1134048/generating-net-crash-dumps-automatically

[stakx]

Closing due to several years of inactivity.