Hi Steve, Have you explicitly tried to use LoadLibrary() (or other load function if in another language) to load the DLL which contains qpidcommon.dll and qpidclient.dll? According to MSDN, TSS should NOT work in this case.
I tried the following: 1). Test.exe -> MyCppQpidWrapper.dll -> qpidcommon.dll and qpidclient.dll In this case everything is fine. 2). In a tcl console, Load MyTclQpidWrapper.dll -> MyCppQpidWrapper.dll -> qpidcommon.dll and qpidclient.dll In this case the tcl program crashes. I'll try the 0.5 branch, but if the code in AysncIO.cpp is the same then I don't expect this problem to go away. Thanks, Shan -----Original Message----- From: Steve Huston [mailto:[email protected]] Sent: 26 March 2009 17:24 To: [email protected] Subject: RE: Exception thrown from qpidcommon.dll on windows Hi Shan, > Thanks for the reply. You're welcome. > But this may be a different problem. After searched on > internet I think > this problem was from the QPID_TSS declaration in > AsynchIO.cpp, which is __declspec(thread) on windows. Right. > MSDN said thread local storage can only work when a dll is > linked to an > executable. If loadLibrary() is used to load the dll, an > system failure > will occur. And this is exactly what happened in my program. I made a > Tcl wrapper of qpid API and tried to load the dll within tcl, > then I got > the exception said the program is trying to access memory 0x000000. I have seen this happen in a situation where a DLL was built that included the qpid libs as static, then the DLL was loaded dynamically at run-time - then this exact crash occurred. However, that situation was resolved when qpidclient and qpidcommon were built as DLLs and linked to the dynamically-loaded DLL. > So basically on any windows system prior to Vista, qpid c++ client can > not be used as a plugin to another program. I don't think this is the case... I tried this scenario with what's on the 0.5-release branch and it worked. I recommend you try it as well. > I had a quick look in your > JIRA but didn't find a project for this. Now I'm trying to rebuild the > client lib without QPID_TSS and assumingly variables like > threadWriteTotal will only be used by one thread, I will be > able to get around this issue. The TSS usage is in qpidcommon.dll, though, which also runs in the broker using multiple threads. The only way to avoid the __declspec(thread) is the create the TSS slots as needed at run time. But, again, please try this with the 0.5-release branch and let us know how it goes. -Steve > -----Original Message----- > From: Steve Huston [mailto:[email protected]] > Sent: 26 March 2009 14:41 > To: [email protected] > Subject: RE: Exception thrown from qpidcommon.dll on windows > > Hi Shan, > > You may be seeing the affects of QPID-1550 > (https://issues.apache.org/jira/browse/QPID-1550) > > The QPID-1673 branch has been merged to trunk - I recommend you either > switch to trunk, use the 0.5-release branch (which is close to being > M5), or wait for the 0.5 (M5) release. QPID-1550 is fixed in all of > those. > > -Steve > > -- > Steve Huston, Riverace Corporation > Check out my networked programming blog at > http://stevehuston.wordpress.com/ > > > > -----Original Message----- > > From: Shan Wang [mailto:[email protected]] > > Sent: Thursday, March 26, 2009 8:32 AM > > To: [email protected] > > Subject: Exception thrown from qpidcommon.dll on windows > > > > > > Hi All, > > > > > > > > I built a client dll from QPID-1673 branch(which I believe is > > the first > > usable windows dll branch). In the beginning everything seems > > fine, then > > I found this exception thrown somewhere from qpidcommon.dll, and the > > call stack is shown below: > > > > > > > > > > > > qpidcommon.dll!qpid::sys::windows::AsynchIO::writeComplete() + 0x46 > > bytes C++ > > > > qpidcommon.dll!qpid::sys::windows::AsynchIO::completion() + > > 0x12f bytes > > C++ > > > > qpidcommon.dll!boost::detail::function::void_function_obj_invo > > ker1<boost > > ::_bi::bind_t<void,boost::_mfi::mf1<void,qpid::sys::PollableCo > > nditionPri > > vate,qpid::sys::AsynchIoResult > > *>,boost::_bi::list2<boost::_bi::value<qpid::sys::PollableCond > > itionPriva > > te *>,boost::arg<1> > >,void,qpid::sys::AsynchIoResult *>::invoke() > + > > 0x10 bytes C++ > > > > qpidcommon.dll!boost::function1<void,qpid::sys::Socket const > > &,std::allocator<boost::function_base> >::operator()() + 0x4e bytes > > C++ > > > > qpidcommon.dll!qpid::sys::AsynchWriteResult::complete() + 0x18 > bytes > > C++ > > > > qpidcommon.dll!qpid::sys::AsynchResult::success() + 0x15 bytes C++ > > > > qpidcommon.dll!qpid::sys::Poller::wait() + 0xd3 bytes C++ > > > > qpidcommon.dll!qpid::sys::Poller::run() + 0x29 bytes C++ > > > > qpidclient.dll!qpid::client::TCPConnector::run() + 0x11c bytes > > C++ > > > > msvcr90.dll!785838bb() > > > > [Frames below may be incorrect and/or missing, no symbols loaded > for > > msvcr90.dll] > > > > qpidcommon.dll!`anonymous namespace'::runRunnable() + 0xb bytes > > C++ > > > > > > > > > > > > Does anyone have a idea what is this about? > > > > > > > > > > > > Thanks and Regards, > > > > Shan > > > > The information contained in this email is strictly > > confidential and for the use of the addressee only, unless > > otherwise indicated. If you are not the intended recipient, > > please do not read, copy, use or disclose to others this > > message or any attachment. Please also notify the sender by > > replying to this email or by telephone (+44 (0)20 7896 0011) > > and then delete the email and any copies of it. Opinions, > > conclusions (etc.) that do not relate to the official > > business of this company shall be understood as neither given > > nor endorsed by it. IG Index plc is a company registered in > > England and Wales under number 01190902. VAT registration > > number 761 2978 07. Registered Office: Friars House, 157-168 > > Blackfriars Road, London SE1 8EZ. Authorised and regulated by > > the Financial Services Authority. 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Authorised and regulated by > the Financial Services Authority. FSA Register number 114059. > > --------------------------------------------------------------------- > Apache Qpid - AMQP Messaging Implementation > Project: http://qpid.apache.org > Use/Interact: mailto:[email protected] > > --------------------------------------------------------------------- Apache Qpid - AMQP Messaging Implementation Project: http://qpid.apache.org Use/Interact: mailto:[email protected] The information contained in this email is strictly confidential and for the use of the addressee only, unless otherwise indicated. If you are not the intended recipient, please do not read, copy, use or disclose to others this message or any attachment. Please also notify the sender by replying to this email or by telephone (+44 (0)20 7896 0011) and then delete the email and any copies of it. Opinions, conclusions (etc.) that do not relate to the official business of this company shall be understood as neither given nor endorsed by it. IG Index plc is a company registered in England and Wales under number 01190902. VAT registration number 761 2978 07. Registered Office: Friars House, 157-168 Blackfriars Road, London SE1 8EZ. Authorised and regulated by the Financial Services Authority. FSA Register number 114059. --------------------------------------------------------------------- Apache Qpid - AMQP Messaging Implementation Project: http://qpid.apache.org Use/Interact: mailto:[email protected]
