pthread_mutex_lock error

pthread_mutex_lock error

[Rob Clack]

I have a big app developed under Linux which has been ported to Windows. 
  I build it under NT4 but a user complained it was broken under W2K and 
indeed he's right.  When I installed it on a borrowed W2K box the 
install went fine, but running it fails immediately with a dialog box headed

Startace.exe - Entry Point Not Found

and the text

The procedure entry point pthread_mutex_lock could not be located in the 
dynamic link library cygwin1.dll.

I have no idea how to even start diagnosing this problem. I'm not keen 
to start installing cygwin on someone else's box, so it would be really 
helpful if someone knows what's going on here.

Thanks
Rob
-- 
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  Don't worry about what people think; they don't do it very often.
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  Rob Clack                        Acedb Development,  Informatics Group
  email: rnc@sanger.ac.uk                Wellcome Trust Sanger Institute
  Tel: +44 1223 494780                   Wellcome Trust Genome Campus
  Fax: +44 1223 494919                   Hinxton  Cambridge    CB10 1SA


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Re: pthread_mutex_lock error

[Christopher Faylor]

On Thu, Sep 04, 2003 at 11:37:10AM +0100, Rob Clack wrote:
>I have no idea how to even start diagnosing this problem.

http://cygwin.com/problems.html

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Re: pthread_mutex_lock error

[Rob Clack]

Sorry, should have mentioned that I had looked at the FAQ, searched the 
archives and googled for pthread_mutex_lock and not found much of great use.

Threads are not something I know much about, the code having been 
written by someone else.

However, while waiting to see if anyone can point me in the right 
direction, I've found that an earlier release of my app (about 3 or 4 
months old), built using an ancient (and now blown away) version of 
Cygwin does work correctly under W2K as well as NT4, Linux, OSF1, etc. 
This enabled me to get my user going, giving me time to actually solve 
the problem.

 From this I infer something has changed around the time we upgraded to 
Cygwin 1.3.22-1.  Since the cygwin1.dll I used to build the binary does 
contain a reference to the function, I'm confused that the error message 
  states that it couldn't be found in the dll.

I did check and there's only one cygwin1.dll on the box.

So I'm stuck now as to how to proceed.  Or does your return post, 
Christopher, mean the answer is there if I only look in the right place?

Rob

Christopher Faylor wrote:
> On Thu, Sep 04, 2003 at 11:37:10AM +0100, Rob Clack wrote:
> 
>>I have no idea how to even start diagnosing this problem.
> 
> 
> http://cygwin.com/problems.html
> 

-- 
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  Not everything incredible is untrue.
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  Rob Clack                        Acedb Development,  Informatics Group
  email: rnc@sanger.ac.uk                Wellcome Trust Sanger Institute
  Tel: +44 1223 494780                   Wellcome Trust Genome Campus
  Fax: +44 1223 494919                   Hinxton  Cambridge    CB10 1SA


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Re: pthread_mutex_lock error

[Christopher Faylor]

On Thu, Sep 04, 2003 at 04:31:35PM +0100, Rob Clack wrote:
>So I'm stuck now as to how to proceed.  Or does your return post, 
>Christopher, mean the answer is there if I only look in the right place?

You said that you had no idea how to diagnose the problem.  I pointed you
at the page which talks about diagnosing problems.  You haven't read it
thoroughly, obviously.  It talks about information that should be in
every problem report, like attached cygcheck output.
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Re: pthread_mutex_lock error

[Rob Clack]

Sad but true.  When I finally did what I should have done to start with, 
I quickly found that I had managed to include the wrong version of 
cygwin1.dll in my binary.  I then found I also had to add 
cygreadline5.dll and cygncurses6.dll, but that was easy enough.  No 
doubt the latter was documented somewhere else I didn't look, ;) but it 
didn't take any time to fix anyway.

The reason for not running cygcheck was that this was someone else's box 
and didn't have cygwin installed.  Once it was installed, it didn't take 
me long to spot that the two versions of cygwin1.dll had different 
timestamps, which quickly led me to the resolution.

So thank you for your help and patience.

Rob

Christopher Faylor wrote:
> On Thu, Sep 04, 2003 at 04:31:35PM +0100, Rob Clack wrote:
> 
>>So I'm stuck now as to how to proceed.  Or does your return post, 
>>Christopher, mean the answer is there if I only look in the right place?
> 
> 
> You said that you had no idea how to diagnose the problem.  I pointed you
> at the page which talks about diagnosing problems.  You haven't read it
> thoroughly, obviously.  It talks about information that should be in
> every problem report, like attached cygcheck output.
> --
> Please use the resources at cygwin.com rather than sending personal email.
> Special for spam email harvesters: send email to aaaspam@sourceware.org
> and be permanently blocked from mailing lists at sources.redhat.com
> 

-- 
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  The mouth: natural home of the foot
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  Rob Clack                        Acedb Development,  Informatics Group
  email: rnc@sanger.ac.uk                Wellcome Trust Sanger Institute
  Tel: +44 1223 494780                   Wellcome Trust Genome Campus
  Fax: +44 1223 494919                   Hinxton  Cambridge    CB10 1SA


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