[elephant-devel] Problem with LWW 5.1.2, BDB-backend

Ian Eslick eslick at media.mit.edu
Tue Dec 8 00:14:59 UTC 2009 

The error 22 is almost always an issue with:

1) Mismatch between code, libberkeley-db, BDB DLL assumptions about BDB version
	Are you sure your code is using constants for BDB-4.7 (set in my-config.sexp)
2) CFFI/UFFI
3) Sometimes I've seen this be a 64-bit vs. 32-bit issue

Your db-env-set-max-locks error seem to indicate an error in category #1.  Are you certain that the code knows you're using BDB-4.7?  

Ian


On Dec 7, 2009, at 1:46 PM, Plamen . wrote:

> Hello Elliott & Jan,
> 
> ty a lot for the DLLs - especially the libberkeley-db.dll saved me may
> be hours today looking in the gcc & dlltool docs...
> 
> But - now it seems LWW can talk to the DLLs & DB, but:
> 
> 1. in the OPEN-CONTROLLER (in the bdb-controller.lisp) I get some new
> errors now :
>    - (db-env-set-max-locks env max-locks) gives error 22 - invalid argument..
>    - (db-env-set-max-transactions env max-transactions) - the same
> I didn't found them in the "Environment Configuration" of the
> "Environments" section of the 4.7.25 docs, so I tought may be they
> stayed in the Lisp code from previous BDB versions and commented them
> out. (Even if I oversee something I suppose BDB has it's defaults for
> that at least)
> 2. but when in the same method DB-ENV-OPEN gets called - I again get
> the error 22 : Invalid argument.
> 
> From what I see in the code - the invocation uses meaningfull
> arguments, putting some debug statements tells that at least on the
> Lisp side we have the right constant-values which correspond with the
> "db.h"-declarations.
> 
> So - I'm a step further with your help, but still can't even open a
> database. I hope - there is a solution. Of course, I could try to make
> the binding using directly the LW FFI, but that would be sad private
> solution or unnesessery source fragmentation when there is UFFI/CFFI
> as a base.
> 
> (Now I use BDB 4.7.25, the newest UFFI in front of CFFI and the DLLs I
> receved today)
> 
> If there is a chance for help - I would be very happy.
> 
> On Mon, Dec 7, 2009 at 7:34 PM, Elliott Slaughter
> <elliottslaughter at gmail.com> wrote:
>> Here are the dlls I built for the newest version of Elephant with BDB
>> 4.7.25. If they work for you, then Ian can put them on the project page.
>> Hope this helps.
>> 
>> On Mon, Dec 7, 2009 at 10:21 AM, Ian Eslick <eslick at media.mit.edu> wrote:
>>> 
>>> Elliott said he was going to give this a shot. You might correspond with
>>> him directly.  -Ian
>>> On Dec 7, 2009, at 12:09 AM, Plamen . wrote:
>>> 
>>>> Hello Ian,
>>>> 
>>>> thank you for the quick response!
>>>> 
>>>> On Sun, Dec 6, 2009 at 5:44 PM, Ian Eslick <eslick at media.mit.edu> wrote:
>>>>> Hey, quick answers:
>>>>> 
>>>>> 1) In the online FAQ you'll notice that you have to ensure that you are
>>>>> using uffi and not the uffi compatibility package from cffi.
>>>> 
>>>> Ok, had missed that...
>>>> 
>>>>> 2) The prebuilt DLLs are not up to date (sorry!), they need to be made
>>>>> current against BDB 4.7 which Elephant 1.0 depends on.
>>>> 
>>>> Ok, had no idea from the doc or source that 4.7 is the current target,
>>>> but that's even better.
>>>> 
>>>>> 3) We have one or two lispworks users that I'm aware of, so it should
>>>>> work, but I can't rule out a lispworks specific problem, although I think #1
>>>>> and #2 above explain what you're seeing.
>>>>> 
>>>>> Are you a position to build the DLLs yourself?
>>>> 
>>>> Haven't touched C for years now and never had the pleasure with cygwin
>>>> but now I'll try it :)
>>>> 
>>>>> 
>>>>> Ian
>>>>> 
>>>>> On Dec 5, 2009, at 5:28 AM, Plamen . wrote:
>>>>> 
>>>>>> Hello,
>>>>>> I need to use BDB for my current application and from what I see on
>>>>>> the net, elephant seems to be the most mature and functional solution.
>>>>>> After following the installation instructions (I use LispWorks 5.1.2
>>>>>> for Windows - yes - I need that configuration at the moment, with
>>>>>> Berkeley DB 4.5.20, with prebuild DLLs (libberkeley-db.dll and
>>>>>> libmemutil.dll) in the elephant-root and from what I see a correct
>>>>>> my-config.sexp also in the elephant-root directory), after loading
>>>>>> Elephant I get the following error :
>>>>>> ELE-USER 13 > (open-store '(:bdb "/temp/db2/"))
>>>>>> Error: The call (#<Function DB-BDB::%DB-ENV-CREATE 22053092> 0) does
>>>>>> not match definition (#<Function DB-BDB::%DB-ENV-CREATE 22053092>
>>>>>> DB-BDB::FLAGS DB-BDB::ERRNO).
>>>>>> From what I see in the sources - there are 3 relevant definitions :
>>>>>> 1. the BDB one :
>>>>>> 
>>>>>> db_env_create
>>>>>> 
>>>>>> ________________________________
>>>>>> 
>>>>>> #include <db.h>
>>>>>> 
>>>>>> int
>>>>>> db_env_create(DB_ENV **dbenvp, u_int32_t flags);
>>>>>> 
>>>>>> 2. then the libberkeley-db one :
>>>>>> 
>>>>>> DB_ENV *db_env_cr(u_int32_t flags, int *errno) {
>>>>>>  DB_ENV *envp;
>>>>>>  *errno = db_env_create(&envp, flags);
>>>>>>  return envp;
>>>>>> }
>>>>>> 
>>>>>> 3. and finally the Lisp definitions :
>>>>>> 
>>>>>> (def-function ("db_env_cr" %db-env-create)
>>>>>>    ((flags :unsigned-int)
>>>>>>     (errno :int :out))
>>>>>>  :returning :pointer-void)
>>>>>> 
>>>>>> (defun db-env-create ()
>>>>>>  "Create an environment handle."
>>>>>>  (multiple-value-bind (env errno)
>>>>>>      (%db-env-create 0)
>>>>>>    (declare (type fixnum errno))
>>>>>>    (if (= errno 0)
>>>>>>       env
>>>>>>       (error 'db-error :errno errno))))
>>>>>> 
>>>>>> I have cffi_0.10.5 and uffi-1.6.2 (which are currently the newest
>>>>>> versions of that libraries).
>>>>>> 
>>>>>> The call (%db-env-create 0) in the db-env-create function looks of
>>>>>> course weird for me, but if people use these lines of source on all
>>>>>> other Lisp-implementations, obviously I miss something. I know the LW
>>>>>> FFI, but I'm not really proficient in the CFFI/UFFI-conversion to see
>>>>>> the missing parts, but if there is someone outside in the WWW who runs
>>>>>> LWW & BDB and/or knows how to help, I would be very gratefull.
>>>>>> 
>>>>>> Regards
>>>>>> Plamen
>>>>>> 
>>>>>> _______________________________________________
>>>>>> elephant-devel site list
>>>>>> elephant-devel at common-lisp.net
>>>>>> http://common-lisp.net/mailman/listinfo/elephant-devel
>>>>> 
>>>>> 
>>>>> _______________________________________________
>>>>> elephant-devel site list
>>>>> elephant-devel at common-lisp.net
>>>>> http://common-lisp.net/mailman/listinfo/elephant-devel
>>>>> 
>>>> 
>>>> _______________________________________________
>>>> elephant-devel site list
>>>> elephant-devel at common-lisp.net
>>>> http://common-lisp.net/mailman/listinfo/elephant-devel
>>> 
>>> 
>>> _______________________________________________
>>> elephant-devel site list
>>> elephant-devel at common-lisp.net
>>> http://common-lisp.net/mailman/listinfo/elephant-devel
>> 
>> 
>> 
>> --
>> Elliott Slaughter
>> 
>> "Don't worry about what anybody else is going to do. The best way to predict
>> the future is to invent it." - Alan Kay
>> 
>> _______________________________________________
>> elephant-devel site list
>> elephant-devel at common-lisp.net
>> http://common-lisp.net/mailman/listinfo/elephant-devel
>> 
> 
> _______________________________________________
> elephant-devel site list
> elephant-devel at common-lisp.net
> http://common-lisp.net/mailman/listinfo/elephant-devel

More information about the elephant-devel mailing list