EvaluatingTteststand 4.2.1: Null, an access violation (error 17502) pointer when trying to use a std::map mixed mode / push shared_ptr class contained in a DLL interface from a different DLL

Hello.

I worked on a test system that will potentially TestStand to its base and downloaded/installed the 4.2.1 assessment. The latest information of the information dialog box are:

TestStand engine version 4.2.1 (4.2.1.83)

Verison 4.2.1.83 sequence editor

The system will push mobile radio using interfaces serial RS232 devices, usnig a variety of protocols series (Hayes and some protocols binary owners for other work).

We already have in existence, a tester of soaking, written unmanaged dll in VS2005 with MFC and also managed dll that is mixed together to provide the different aspects of the functionality required for binary protocols.

I created:

1. a "wrapper"master"DLL for the constellation of the other dll - it offers a simple C API interface that I hope TestStand will use. "We call it"SerialSessionMgr.dll"

2. a mixed managed / unmanaged "IJW" (it works) DLL that wraps Protocol binary log control interfaces, which are entirely management C + c++ / CLI: DLL calls "master" wrapper"this as an unmanaged interface to create instances of the class compiled by CLI which interfaces to the underlying managed dll imlpementing protocol logging. It's called "WinTseInterface.dll".

Until I started evaluating TestStand, I struck up a test harness using CPPUnit / MFC, with which I could test SerialSessionMgr.dll and its ' use of WinTseInterface.dll and check that they worked. The sling load the DLL dynamically at runtime using AfxLoadLibrary() trying to emulate the TestStand way he uses.

When we opened a TSE session:

  1. The SerialSessionManager made a call to the WinTseInterface.dll to 'create' an instance of logging. The instance is created in a std::map held by the CWinApp derived class, this map contains boost::shared_ptr of the class that works with a managed class. So we have a record of appeal: Client app-> SerialSessionManager {TseStartSession ()}-> WinTseInterface {WINTSE_GetWinTseBridge ()} - just WINTSE_GetWinTseBridge() creates a new instance of the unmanaged class through the managed CLI/C++ class interfaces slot, which returns the address of the SerialSessionManager, that stores.
  2. The SerialSessioManager actually initializes the WinTseBridge using a method of a class of virtual interface implements pure C++ class in the std::map in the WinTseInterface DLL. The call to initialize passes various details and actually called 'New' to create the managed class which of your interfaces to the underlying managed DLLS that implement the protocol logging.

My DLL loading logs as seen in VS2005 debug output are joined this message in PDF format

While trying to solve this problem, I tried:


Tags: NI Software

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