Ebenezer Enterprises

We offer free services aimed at helping those who are developing applications with C++.

Web Interface to Middleware Service
Command Line Interface to Middleware Service
  Comparing Boost Serialization to our approach
  Send Sample - sendsample.cc
  Receive Sample - receivesample.cc
  Rbtree Sample

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Recent Developments

November, 2009

Version 1.10 of the C++ Middleware Writer is now on line.

August, 2009

Support for stable_vector added. Here's a modified version of stable_vector.hpp that compiles with gcc version 4.3.2.

May, 2009

Support for Boost Array is available.

April, 2009

Exclusive support for boost::intrusive::list and boost::intrusive::rbtree is available. Neither Boost Intrusive nor Boost Serialization offers serialization support for these containers at this time.

February, 2009

Added support for flex_string. Currently our support is limited to char as the first template argument. We support the multiple storage policies available with flex_string.
Load/Receive performance tests added and updates to existing tests.

December, 2008

Https support added.

March, 2008

Support for the Boost Unordered Containers library is available. This includes unordered_set, unordered_multiset, unordered_map and unordered_multimap.

Support for message lengths is now available. Code that receives messages should call SetMsgLength() (ReceiveBuffer::SetMsgLength or ReceiveCompressedBuffer::SetMsgLength) prior to calling a Receive function. See the Receive Sample for an example of this. A clc++m thread titled "Preventing Denial of Service Attack in IPC Serialization" was instrumental in our decision to add this support.

Support for the Boost Range library's sub_range<> is available. The support for this type is unusual in that it is possible to send data via a sub_range but not receive data into one. There's more info here about how we support this type.

January, 2008

Support for message IDs is now available.
This Middle code:

msgs
  (list<int32_t>) @msg_id_a1
}

results in this output. Notice how the Send function includes code to send a message ID, but the Receive function doesn't have any related code. The data sent by the Send function will probably be handled by two Receive functions. The first Receive function (not shown) to execute will get a message ID, which can then be used to dispatch to the Receive function in the above listing. This program shows an example of that.

July, 2007

Added a Resize function to the Buffer class.

December, 2006

Fixed an overflow problem in Buffer's Receive function and made a few minor changes to the class.

June, 2006

Worked on improvements to the Middleware Service documentation including expanding the "Advantages" section and adding a section called "Dealing with Stragglers" that discusses supporting multiple versions of a product simultaneosly.

December, 2005

Added valarray<> support,
changed/improved the code generated when receiving vectors of POD,
changed/improved the code in Send functions after noting only a single int is needed to keep track of the counts/sizes of container classes. We still use an array of ints in Receive functions.