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Orion Edwards

2011-Oct-26 01:21 UTC

[Ironruby-core] IronRuby''s Marshal.dump doesn''t work with CLR types, or ruby types backed by a CLR type

Backstory: I''m trying to use DRb for some in-house utility code. DRb
itself seems to work fine, but I found that when I misspelled a method
name, instead of reporting back a NoMethodError, the IronRuby process
crashed immediately to the console.

This is using a relatively recent build of IronRuby from Github

Steps to repro:

e = RuntimeError.new ''xyz''
dumped = Marshal.dump e
e2 = Marshal.load dumped

I would expect e2 to be equivalent to e, but instead the process crashes
with this exception

mscorlib:0:in `_InvokeConstructor'': Exception has been thrown by the
target of an invocation. (System::Reflection::TargetInvocationException)
from mscorlib:0:in `InvokeConstructor''
from mscorlib:0:in `Invoke''
from (ir):1:in `load''
from (ir):1

Note: This also happens with any CLR type eg System::DateTime.

I looked through IronRuby''s marshalling code, and it appears that the
behaviour of Marshal.dump and Marshal.load don''t align properly.

Marshal.dump is it''s own self-contained set of code which essentially
writes data to a BinaryStream.
For ruby types, it ends up writing a series of values in a format that
looks a lot like what I remember CRuby''s marshal writing.
For CLR types, this just writes the Type name and no instance data (clr
objects don''t have ruby instance variables after all)

Marshal.load does 2 things:
1. Reads any ruby instance variables out into an Attributes dictionary
2. Uses reflection to find any non-public Constructor(SerializationInfo,
StreamingContext) and invoke it.

For ruby types, this finds the protected RubyClass(SerializationInfo,
StreamingContext) ctor, which calls RubyOps.DeserializeObject, which in
turn reads the attributes dictionary and it''s all fine.
For CLR types, this finds whatever constructor might exist for the CLR
object, which does whatever it does for that type.

Unfortunately because the data that is getting passed into the CLR
deserialization constructor came from Marshal.dump which has no knowledge
whatsoever of CLR serialization, the whole thing crashes.

I''m no expert on CLR serialization, so I''d really appreciate
some comments
on this, as I''m not sure what to do here.

As far as I can guess however, I can see two solutions:

1. Implement Marshal.dump on top of the CLR serialization code so it
matches Marshal.load and should therefore be able to handle CLR types too.

2. Don''t allow marshalling of CLR types, and put some special-case code
into any Ruby types that are backed by CLR types (such as Exception) so
these at least can be serialized?

I''m going to have a crack at #1, but I''m not sure how
successful this is.

Again, any feedback would be greatly appreciated.

Thanks, Orion
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Tomas Matousek

2011-Oct-26 02:13 UTC

head link

[Ironruby-core] IronRuby''s Marshal.dump doesn''t work with CLR types, or ruby types backed by a CLR type

I think we should NOT serialize non-Ruby types for now. The implementation
isn''t quite working so I''d prefer we delete all code that
deals with ISerializable, clean up the marshaller and if .NET serialization is
needed in future implement it fully and correctly.

Marshal.dump has to output exactly the same data as CRuby implementation (for
Ruby objects). Otherwise you won''t be able to read data serialized by
CRuby in IronRuby and vice versa.

Tomas

From: ironruby-core-bounces at rubyforge.org [mailto:ironruby-core-bounces at
rubyforge.org] On Behalf Of Orion Edwards
Sent: Tuesday, October 25, 2011 6:22 PM
To: ironruby-core at rubyforge.org
Subject: [Ironruby-core] IronRuby''s Marshal.dump doesn''t work
with CLR types, or ruby types backed by a CLR type

Backstory: I''m trying to use DRb for some in-house utility code. DRb
itself seems to work fine, but I found that when I misspelled a method name,
instead of reporting back a NoMethodError, the IronRuby process crashed
immediately to the console.

This is using a relatively recent build of IronRuby from Github

Steps to repro:

e = RuntimeError.new ''xyz''
dumped = Marshal.dump e
e2 = Marshal.load dumped

I would expect e2 to be equivalent to e, but instead the process crashes with
this exception

mscorlib:0:in `_InvokeConstructor'': Exception has been thrown by the
target of an invocation. (System::Reflection::TargetInvocationException)
        from mscorlib:0:in `InvokeConstructor''
        from mscorlib:0:in `Invoke''
        from (ir):1:in `load''
        from (ir):1


Note: This also happens with any CLR type eg System::DateTime.

I looked through IronRuby''s marshalling code, and it appears that the
behaviour of Marshal.dump and Marshal.load don''t align properly.

Marshal.dump is it''s own self-contained set of code which essentially
writes data to a BinaryStream.
For ruby types, it ends up writing a series of values in a format that looks a
lot like what I remember CRuby''s marshal writing.
For CLR types, this just writes the Type name and no instance data (clr objects
don''t have ruby instance variables after all)

Marshal.load does 2 things:
1. Reads any ruby instance variables out into an Attributes dictionary
2. Uses reflection to find any non-public Constructor(SerializationInfo,
StreamingContext) and invoke it.


For ruby types, this finds the protected RubyClass(SerializationInfo,
StreamingContext) ctor, which calls RubyOps.DeserializeObject, which in turn
reads the attributes dictionary and it''s all fine.
For CLR types, this finds whatever constructor might exist for the CLR object,
which does whatever it does for that type.

Unfortunately because the data that is getting passed into the CLR
deserialization constructor came from Marshal.dump which has no knowledge
whatsoever of CLR serialization, the whole thing crashes.

I''m no expert on CLR serialization, so I''d really appreciate
some comments on this, as I''m not sure what to do here.

As far as I can guess however, I can see two solutions:

1. Implement Marshal.dump on top of the CLR serialization code so it matches
Marshal.load and should therefore be able to handle CLR types too.

2. Don''t allow marshalling of CLR types, and put some special-case code
into any Ruby types that are backed by CLR types (such as Exception) so these at
least can be serialized?

I''m going to have a crack at #1, but I''m not sure how
successful this is.

Again, any feedback would be greatly appreciated.

Thanks, Orion
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Orion Edwards

2011-Oct-26 02:58 UTC

head link

[Ironruby-core] IronRuby''s Marshal.dump doesn''t work with CLR types, or ruby types backed by a CLR type

For dealing with Clr-backed objects such as Exception should we just 
create special cases in the Marshal to dump and load them? Is there any 
way I can find out what other ruby objects are actually CLR objects other 
than Exception types and the basic int, double, float types?

My experiments with extending the marshal to dump CLR types were 
interesting.
I can dump and load pure CLR types such as System::DateTime, and in theory 
it should also work seamlessly for CLR classes that have been
"extended"
by ruby.
The code is quite simple, it just extends the marshaller and add a few 
extra nonstandard type codes for CLR primitive types such as System::Int64 
that can''t be dealt with by the ruby marshaller.

You wouldn''t be able to unmarshal a Pure or extended CLR object from
CRuby
as it wouldn''t understand these extra type codes but that
doesn''t make any
sense anyway.

Because the marshal extensions preserve all the CLR information for 
exceptions, an IronRuby Exception won''t be able to be loaded by CRuby,
so
to keep compatibility there would have to be special cases for Exceptions 
(and any other builtin CLR objects that masquerade as ruby objects) 
whether the ISerializable code stays or goes.

Are there any unit tests or specs for the marshalling? There doesn''t
seem
to be any mention of it in IronRuby.Tests.csproj, but I haven''t looked 
through all the rubyspec stuff yet.




From:   Tomas Matousek <Tomas.Matousek at microsoft.com>
To:     "ironruby-core at rubyforge.org" <ironruby-core at
rubyforge.org>
Date:   26/10/2011 03:42 p.m.
Subject:        Re: [Ironruby-core] IronRuby''s Marshal.dump
doesn''t work
with CLR types, or ruby types backed by a CLR type
Sent by:        ironruby-core-bounces at rubyforge.org



I think we should NOT serialize non-Ruby types for now. The implementation 
isn?t quite working so I?d prefer we delete all code that deals with 
ISerializable, clean up the marshaller and if .NET serialization is needed 
in future implement it fully and correctly.
 
Marshal.dump has to output exactly the same data as CRuby implementation 
(for Ruby objects). Otherwise you won?t be able to read data serialized by 
CRuby in IronRuby and vice versa.
 
Tomas
 
From: ironruby-core-bounces at rubyforge.org [
mailto:ironruby-core-bounces at rubyforge.org] On Behalf Of Orion Edwards
Sent: Tuesday, October 25, 2011 6:22 PM
To: ironruby-core at rubyforge.org
Subject: [Ironruby-core] IronRuby''s Marshal.dump doesn''t work
with CLR
types, or ruby types backed by a CLR type
 
Backstory: I''m trying to use DRb for some in-house utility code. DRb 
itself seems to work fine, but I found that when I misspelled a method 
name, instead of reporting back a NoMethodError, the IronRuby process 
crashed immediately to the console. 

This is using a relatively recent build of IronRuby from Github 

Steps to repro: 

e = RuntimeError.new ''xyz'' 
dumped = Marshal.dump e 
e2 = Marshal.load dumped 

I would expect e2 to be equivalent to e, but instead the process crashes 
with this exception 

mscorlib:0:in `_InvokeConstructor'': Exception has been thrown by the 
target of an invocation. (System::Reflection::TargetInvocationException) 
        from mscorlib:0:in `InvokeConstructor'' 
        from mscorlib:0:in `Invoke'' 
        from (ir):1:in `load'' 
        from (ir):1 


Note: This also happens with any CLR type eg System::DateTime. 

I looked through IronRuby''s marshalling code, and it appears that the 
behaviour of Marshal.dump and Marshal.load don''t align properly. 

Marshal.dump is it''s own self-contained set of code which essentially 
writes data to a BinaryStream. 
For ruby types, it ends up writing a series of values in a format that 
looks a lot like what I remember CRuby''s marshal writing. 
For CLR types, this just writes the Type name and no instance data (clr 
objects don''t have ruby instance variables after all) 

Marshal.load does 2 things: 
1. Reads any ruby instance variables out into an Attributes dictionary 
2. Uses reflection to find any non-public Constructor(SerializationInfo, 
StreamingContext) and invoke it. 


For ruby types, this finds the protected RubyClass(SerializationInfo, 
StreamingContext) ctor, which calls RubyOps.DeserializeObject, which in 
turn reads the attributes dictionary and it''s all fine. 
For CLR types, this finds whatever constructor might exist for the CLR 
object, which does whatever it does for that type. 

Unfortunately because the data that is getting passed into the CLR 
deserialization constructor came from Marshal.dump which has no knowledge 
whatsoever of CLR serialization, the whole thing crashes. 

I''m no expert on CLR serialization, so I''d really appreciate
some comments
on this, as I''m not sure what to do here. 

As far as I can guess however, I can see two solutions: 

1. Implement Marshal.dump on top of the CLR serialization code so it 
matches Marshal.load and should therefore be able to handle CLR types too. 


2. Don''t allow marshalling of CLR types, and put some special-case code
into any Ruby types that are backed by CLR types (such as Exception) so 
these at least can be serialized? 

I''m going to have a crack at #1, but I''m not sure how
successful this is.

Again, any feedback would be greatly appreciated. 

Thanks, Orion_______________________________________________
Ironruby-core mailing list
Ironruby-core at rubyforge.org
http://rubyforge.org/mailman/listinfo/ironruby-core

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Orion Edwards

2011-Oct-28 02:46 UTC

head link

[Ironruby-core] IronRuby''s Marshal.dump doesn''t work with CLR types, or ruby types backed by a CLR type

I''ve made some changes and have a pull request on Github:

https://github.com/IronLanguages/main/pull/47

The changeset is 

https://github.com/gglresearchanddevelopment/ironlanguages-main/commit/630995eca293b5b0531e821b76bab7e15c4506f6

What I did:

1. Ran load_spec and dump_spec under 
Languages\Ruby\Tests\mspec\rubyspec\core\marshal
  - Lots and lots of things failed

2. Fixed all the failures (except for one, which I can''t quite figure 
out).
  - The majority of this work was around writing string encodings when 
marshalling. IronRuby now writes string encodings as per MRI 1.9.2
      - I didn''t make Marshal.Read understand string encodings yet
though.
The dump-with-encoding loads the string with no error, it just won''t
pick
up the encoding

  - IronRuby didn''t handle loading of self-referential arrays, hashes
and
objects. I added some specs for these and fixed the Marshal.Load code
  - It appears the behaviour of calling Marshal.load passing a proc 
changed between ruby 1.8 and 1.9. It now does what MRI 1.9.2 does

3. Removed the code path from Marshal.load that was using .NET 
serialization.
 - Most things worked fine, except the ruby Range CLR class which was 
using the .NET serialization interface. 
 - As the Ruby range class is immutable we can''t rely on instance
variable
setting, and unfortunately range just gets dumped as Object (no special 
token) so it doesn''t really fit into the Marshal.load structure :-(
 - I added a new interface: IRubySpecialMarshalling. the range CLR class 
implements this, and Marshal.load checks for it as an alternative way of 
setting instance data.
     - This has the bonus of letting us dump subclasses of  Range. 
Previously this did not work.

4. Added code and specs for basic marshalling of Exception types. 
Currently only Exception.message and Exception.backtrace are supported, 
but this covers the majority of use cases for me.
   - Added a special case in Marshal.Write to write the exception data
   - As Exception is like Range (can''t set instance variables,
can''t use
.NET serialization) It uses IRubySpecialMarshalling through a proxy 
object. The proxy object is required because I can''t change the CLR 
exception class to include my interface -:-(

Some notes:

- I''m not particularly happy with the way IRubySpecialMarshalling is 
working, but I''m not sure of a better way to do it. 
- Using reflection to set Exception.message sucks, but the requirement to 
unmarshal self-referential objects basically means you cannot Marshal.load 
an object''s attributes an object before you create the object itself.
This
is probably no big deal in CRuby :-(
- The single failing marshal test is "loads an Array with proc". I
can''t
figure out what the logic behind calling the proc is as it gets really 
complicated with lots of nested types. If anyone could shed some light on 
it that would be great.
- Where encodings have aliases, IronRuby selects a string''s encoding by
asking windows what to use based on a Codepage number. Because MRI uses a 
different bit of logic, MRI and IronRuby can abitrarily select different 
aliases. EG:

s = "foo"
s.force_encoding "cp850" 
s.force_encoding "ibm850"  # alternative which has the same effect
puts s.encoding => "CP850" in MRI, "ibm850" in IronRuby

I don''t suppose this matters much, but it did make the specs harder to 
write :-(

Anyway, any feedback would be much appreciated. Thanks, Orion



From:   Tomas Matousek <Tomas.Matousek at microsoft.com>
To:     "ironruby-core at rubyforge.org" <ironruby-core at
rubyforge.org>
Date:   26/10/2011 03:42 p.m.
Subject:        Re: [Ironruby-core] IronRuby''s Marshal.dump
doesn''t work
with CLR types, or ruby types backed by a CLR type
Sent by:        ironruby-core-bounces at rubyforge.org



I think we should NOT serialize non-Ruby types for now. The implementation 
isn?t quite working so I?d prefer we delete all code that deals with 
ISerializable, clean up the marshaller and if .NET serialization is needed 
in future implement it fully and correctly.
 
Marshal.dump has to output exactly the same data as CRuby implementation 
(for Ruby objects). Otherwise you won?t be able to read data serialized by 
CRuby in IronRuby and vice versa.
 
Tomas
 
From: ironruby-core-bounces at rubyforge.org [
mailto:ironruby-core-bounces at rubyforge.org] On Behalf Of Orion Edwards
Sent: Tuesday, October 25, 2011 6:22 PM
To: ironruby-core at rubyforge.org
Subject: [Ironruby-core] IronRuby''s Marshal.dump doesn''t work
with CLR
types, or ruby types backed by a CLR type
 
Backstory: I''m trying to use DRb for some in-house utility code. DRb 
itself seems to work fine, but I found that when I misspelled a method 
name, instead of reporting back a NoMethodError, the IronRuby process 
crashed immediately to the console. 

This is using a relatively recent build of IronRuby from Github 

Steps to repro: 

e = RuntimeError.new ''xyz'' 
dumped = Marshal.dump e 
e2 = Marshal.load dumped 

I would expect e2 to be equivalent to e, but instead the process crashes 
with this exception 

mscorlib:0:in `_InvokeConstructor'': Exception has been thrown by the 
target of an invocation. (System::Reflection::TargetInvocationException) 
        from mscorlib:0:in `InvokeConstructor'' 
        from mscorlib:0:in `Invoke'' 
        from (ir):1:in `load'' 
        from (ir):1 


Note: This also happens with any CLR type eg System::DateTime. 

I looked through IronRuby''s marshalling code, and it appears that the 
behaviour of Marshal.dump and Marshal.load don''t align properly. 

Marshal.dump is it''s own self-contained set of code which essentially 
writes data to a BinaryStream. 
For ruby types, it ends up writing a series of values in a format that 
looks a lot like what I remember CRuby''s marshal writing. 
For CLR types, this just writes the Type name and no instance data (clr 
objects don''t have ruby instance variables after all) 

Marshal.load does 2 things: 
1. Reads any ruby instance variables out into an Attributes dictionary 
2. Uses reflection to find any non-public Constructor(SerializationInfo, 
StreamingContext) and invoke it. 


For ruby types, this finds the protected RubyClass(SerializationInfo, 
StreamingContext) ctor, which calls RubyOps.DeserializeObject, which in 
turn reads the attributes dictionary and it''s all fine. 
For CLR types, this finds whatever constructor might exist for the CLR 
object, which does whatever it does for that type. 

Unfortunately because the data that is getting passed into the CLR 
deserialization constructor came from Marshal.dump which has no knowledge 
whatsoever of CLR serialization, the whole thing crashes. 

I''m no expert on CLR serialization, so I''d really appreciate
some comments
on this, as I''m not sure what to do here. 

As far as I can guess however, I can see two solutions: 

1. Implement Marshal.dump on top of the CLR serialization code so it 
matches Marshal.load and should therefore be able to handle CLR types too. 


2. Don''t allow marshalling of CLR types, and put some special-case code
into any Ruby types that are backed by CLR types (such as Exception) so 
these at least can be serialized? 

I''m going to have a crack at #1, but I''m not sure how
successful this is.

Again, any feedback would be greatly appreciated. 

Thanks, Orion_______________________________________________
Ironruby-core mailing list
Ironruby-core at rubyforge.org
http://rubyforge.org/mailman/listinfo/ironruby-core

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Orion Edwards

2011-Nov-01 02:04 UTC

head link

[Ironruby-core] IronRuby''s Marshal.dump doesn''t work with CLR types, or ruby types backed by a CLR type

I''ve updated the pull request as per Tomas'' code review
comments.

- Removed ISpecialRubyMarshalling interface in favour of keeping the code 
all in the Marshal
- Only implement Exception#==, not === and eql?
- Implement proper Exception comparison logic to match MRI
- Change the Marshal#ReadObject code to special-case Exceptions and Ranges 
so we don''t need to use reflection to set Exception.message and range 
values (yay!)
- Minor tweaks to some exception classes to pass a couple more Rubyspecs 
while I was at it

https://github.com/IronLanguages/main/pull/47/files

Thanks, Orion



From:   Tomas Matousek <Tomas.Matousek at microsoft.com>
To:     "ironruby-core at rubyforge.org" <ironruby-core at
rubyforge.org>
Date:   26/10/2011 03:42 p.m.
Subject:        Re: [Ironruby-core] IronRuby''s Marshal.dump
doesn''t work
with CLR types, or ruby types backed by a CLR type
Sent by:        ironruby-core-bounces at rubyforge.org



I think we should NOT serialize non-Ruby types for now. The implementation 
isn?t quite working so I?d prefer we delete all code that deals with 
ISerializable, clean up the marshaller and if .NET serialization is needed 
in future implement it fully and correctly.
 
Marshal.dump has to output exactly the same data as CRuby implementation 
(for Ruby objects). Otherwise you won?t be able to read data serialized by 
CRuby in IronRuby and vice versa.
 
Tomas
 
From: ironruby-core-bounces at rubyforge.org [
mailto:ironruby-core-bounces at rubyforge.org] On Behalf Of Orion Edwards
Sent: Tuesday, October 25, 2011 6:22 PM
To: ironruby-core at rubyforge.org
Subject: [Ironruby-core] IronRuby''s Marshal.dump doesn''t work
with CLR
types, or ruby types backed by a CLR type
 
Backstory: I''m trying to use DRb for some in-house utility code. DRb 
itself seems to work fine, but I found that when I misspelled a method 
name, instead of reporting back a NoMethodError, the IronRuby process 
crashed immediately to the console. 

This is using a relatively recent build of IronRuby from Github 

Steps to repro: 

e = RuntimeError.new ''xyz'' 
dumped = Marshal.dump e 
e2 = Marshal.load dumped 

I would expect e2 to be equivalent to e, but instead the process crashes 
with this exception 

mscorlib:0:in `_InvokeConstructor'': Exception has been thrown by the 
target of an invocation. (System::Reflection::TargetInvocationException) 
        from mscorlib:0:in `InvokeConstructor'' 
        from mscorlib:0:in `Invoke'' 
        from (ir):1:in `load'' 
        from (ir):1 


Note: This also happens with any CLR type eg System::DateTime. 

I looked through IronRuby''s marshalling code, and it appears that the 
behaviour of Marshal.dump and Marshal.load don''t align properly. 

Marshal.dump is it''s own self-contained set of code which essentially 
writes data to a BinaryStream. 
For ruby types, it ends up writing a series of values in a format that 
looks a lot like what I remember CRuby''s marshal writing. 
For CLR types, this just writes the Type name and no instance data (clr 
objects don''t have ruby instance variables after all) 

Marshal.load does 2 things: 
1. Reads any ruby instance variables out into an Attributes dictionary 
2. Uses reflection to find any non-public Constructor(SerializationInfo, 
StreamingContext) and invoke it. 


For ruby types, this finds the protected RubyClass(SerializationInfo, 
StreamingContext) ctor, which calls RubyOps.DeserializeObject, which in 
turn reads the attributes dictionary and it''s all fine. 
For CLR types, this finds whatever constructor might exist for the CLR 
object, which does whatever it does for that type. 

Unfortunately because the data that is getting passed into the CLR 
deserialization constructor came from Marshal.dump which has no knowledge 
whatsoever of CLR serialization, the whole thing crashes. 

I''m no expert on CLR serialization, so I''d really appreciate
some comments
on this, as I''m not sure what to do here. 

As far as I can guess however, I can see two solutions: 

1. Implement Marshal.dump on top of the CLR serialization code so it 
matches Marshal.load and should therefore be able to handle CLR types too. 


2. Don''t allow marshalling of CLR types, and put some special-case code
into any Ruby types that are backed by CLR types (such as Exception) so 
these at least can be serialized? 

I''m going to have a crack at #1, but I''m not sure how
successful this is.

Again, any feedback would be greatly appreciated. 

Thanks, Orion_______________________________________________
Ironruby-core mailing list
Ironruby-core at rubyforge.org
http://rubyforge.org/mailman/listinfo/ironruby-core

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James W.

2012-Jul-06 18:46 UTC

head link

[Ironruby-core] IronRuby''s Marshal.dump doesn''t work with CLR types, or ruby types backed by a CLR type

Orion et al.,

I am curious if there has been any forward momentum on addressing CLR
object serialization in IronRuby. I''m currently porting some JRuby test
framework code that utilizes DRb as an interface to serialize Java
objects for test automation. We''d like to be able to accomplish the
same
in Ironruby with CLR objects. Unfortunately, I am running into the above
issue when DRb uses Marshal.load and Marshal.dump to serialize CLR  (and
CLR-backed) objects. Although there are many potential work-arounds, it
seems that the ideal scenario would be for Ironruby to competently
handle .NET family object serializations.

Although I will be implementing a work-around in the short-term, I''d be
interested in continuing this discussion. Any references you can provide
would be exceptionally useful.

Best regards,

James

-- 
Posted via http://www.ruby-forum.com/.

Orion Edwards

2012-Jul-09 10:28 UTC

head link

[Ironruby-core] IronRuby''s Marshal.dump doesn''t work with CLR types, or ruby types backed by a CLR type

I personally haven''t done any work on it since those last emails.
I''m
away from work for the next week or so, so I can''t go and look it up
easily.>From my vague memories of the code, it shouldn''t be much work to
getit marshalling .NET objects that use the .NET Serialization API''s. I
had it working, I just needed to write extra code for .NET fundamental
types like Int64 which aren''t handled.
Nonserializable .NET objects are much harder however (maybe impossible?).

I too was trying to get DRB to work, but the big issue with that is
that DRB uses ruby object id''s to keep track of different objects on
both sides of the connection. CRuby has a special format for object
id''s, and critically, you should never get duplicate object
id''s.
IronRuby''s implementation of Object ID''s on the other hand is
very
basic, and it''s quite easy to get duplicate object id''s,
(completely
ruining DRb). I''d start with that :-)

Certainly, if you get DRb working, I''d be a grateful user of it :-)

On Sat, Jul 7, 2012 at 4:16 AM, James W. <lists at ruby-forum.com>
wrote:> Orion et al.,
>
> I am curious if there has been any forward momentum on addressing CLR
> object serialization in IronRuby. I''m currently porting some JRuby
test
> framework code that utilizes DRb as an interface to serialize Java
> objects for test automation. We''d like to be able to accomplish
the same
> in Ironruby with CLR objects. Unfortunately, I am running into the above
> issue when DRb uses Marshal.load and Marshal.dump to serialize CLR  (and
> CLR-backed) objects. Although there are many potential work-arounds, it
> seems that the ideal scenario would be for Ironruby to competently
> handle .NET family object serializations.
>
> Although I will be implementing a work-around in the short-term,
I''d be
> interested in continuing this discussion. Any references you can provide
> would be exceptionally useful.
>
> Best regards,
>
> James
>
> --
> Posted via http://www.ruby-forum.com/.
> _______________________________________________
> Ironruby-core mailing list
> Ironruby-core at rubyforge.org
> http://rubyforge.org/mailman/listinfo/ironruby-core

James W.

2012-Jul-09 22:37 UTC

head link

[Ironruby-core] IronRuby''s Marshal.dump doesn''t work with CLR types, or ruby types backed by a CLR type

Hi Orion,

Thanks for the useful feedback. In the interim, I am maintaining the
object on the DRb server-side and keeping interaction with the object
basic enough to maintain fairly easily. A rudimentary proxy, if you
will. Long term, though, I will follow-up on your starting points and
endeavor to get both marshaling and serializing working. I haven''t
run-across the object id issue that you mentioned with DRb, however I
believe this is by nature of the work around.

I''ll keep you in the loop as it progresses, it''s something
that will
probably get put on the shelf for a week or two as I deal with more
straight-forward tasks first.

Cheers,

James


Orion Edwards wrote in post #1067985:> I personally haven''t done any work on it since those last emails.
I''m
> away from work for the next week or so, so I can''t go and look it
up
> easily.
>>From my vague memories of the code, it shouldn''t be much work
to get
> it marshalling .NET objects that use the .NET Serialization API''s.
I
> had it working, I just needed to write extra code for .NET fundamental
> types like Int64 which aren''t handled.
> Nonserializable .NET objects are much harder however (maybe
> impossible?).
>
> I too was trying to get DRB to work, but the big issue with that is
> that DRB uses ruby object id''s to keep track of different objects
on
> both sides of the connection. CRuby has a special format for object
> id''s, and critically, you should never get duplicate object
id''s.
> IronRuby''s implementation of Object ID''s on the other
hand is very
> basic, and it''s quite easy to get duplicate object id''s,
(completely
> ruining DRb). I''d start with that :-)
>
> Certainly, if you get DRb working, I''d be a grateful user of it
:-)
-- 
Posted via http://www.ruby-forum.com/.

Badr A.

2012-Oct-03 07:19 UTC

head link

[Ironruby-core] IronRuby''s Marshal.dump doesn''t work with CLR types, or ruby types backed by a CLR type

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?????????] [http://www.anisaty.com/vb/t70880.html ????? ?????? ?? ?????] 
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[http://www.anisaty.com/vb/t71207.html ????? ????? ???? ????? ?? ?????? 
?????] [http://www.anisaty.com/vb/t71203.html ??? ?????? ?? ??????] 
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[http://www.anisaty.com/vb/t70932.html ???? ???? ????? ?? ???????? 
???????] [http://www.anisaty.com/vb/t70931.html ???? ??????? ?? ???? ??? 
????] [http://www.anisaty.com/vb/t70929.html ????? ????? ?? ???? ??????] 
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???????] [http://www.anisaty.com/vb/t70184.html ????? ??????? ???????? 
?? ?????? ???????] [http://www.anisaty.com/vb/t70180.html ????? ?????? 
???????? ??? ??????] [http://www.anisaty.com/vb/t70177.html ?????? 
?????? ???????? ???????] [http://www.anisaty.com/vb/t70156.html ?????? 
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???????] [http://vb.ghrorak.com/ghrorak-t7826.html ??? ???] 
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[http://helwat.com/ ?????] [http://helwat.com/vb/ ??????? ?????] 
[http://helwat.com/vb/ ??????? ??????]

-- 
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