X-Spam-Check-By: sourceware.org Message-ID: <507150040705081919i1cbf7194y9672fc6a1b1601a2@mail.gmail.com> Date: Tue, 8 May 2007 19:19:07 -0700 From: "kalasad mailu" To: cygwin@cygwin.com Subject: Re: Please Help!! Calling Socket function in a dll file (that is created using cygwin library), by a Microsoft Visual C++ program resulting in infinite loop In-Reply-To: <463909F9.6B33B9C7@dessent.net> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <507150040705021415r750600a6oc6e24b339bf57143@mail.gmail.com> <463909F9.6B33B9C7@dessent.net> X-IsSubscribed: yes Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com Thanks for your answer and it works. I have one more question: I read the following from the how-cygtls-works.txt "If you load cygwin1.dll dynamically from a non-cygwin application, it is vital that the bottom CYGTLS_PADSIZE bytes of the stack are not in use before you call cygwin_dll_init()" How do I make sure bottom CYGTLS_PADSIZE bytes of the stack are not in use before you call cygwin_dll_init()" I could not find any information at: winsup/testsuite/cygload On 5/2/07, Brian Dessent wrote: > kalasad mailu wrote: > > > I am trying hard to get this stuff working!!!!!! Could you please help me. > > > > I created a dll file (test.dll), which contains the function that > > creates a socket and return the success/failure status. This file uses > > the socket.h provided by cygwin. I compiled this dll using gcc on > > cygwin. > > > > I also created a library file(testdll.lib) from this dll(test.dll). > > When I tried to call the function defined in the test.dll in a program > > (written in Microsoft Visual C++), this enters (that is created using > > cygwin library), by a Microsoft Visual C++ program rean infinite loop. > > The same program works fine if I call getuid or random function > > instead of socket. And the stack is as below. I would really > > appreciate if I can get some suggestions on how to get this working. > > The Cygwin DLL has special requirements for initialization. This > happens automatically for executables compiled with gcc, but otherwise > you need to explicly init the library. The details are all in the FAQ. > > > gcc -shared -I ../../cygwin/usr/include/cygwin -o testdll.dll test.cpp > > -Wl,--output-def,testdll.def,--out-implib,libtestdll.a > > > > Command used to create the library file: > > > > "C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\bin\lib" > > /machine:i386 /DEF:testdll.def > > Why not simply "cp libtest.dll.a testdll.lib"? They're the same thing. > > Brian > > -- > Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple > Problem reports: http://cygwin.com/problems.html > Documentation: http://cygwin.com/docs.html > FAQ: http://cygwin.com/faq/ > > -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/