zero copy blog article

[elfenpiff]

No description provided.

[elfenpiff]

@PLeVasseur here is the blog article you are waiting for. This is just a stub pull request to get some feedback. I would address everything here publicly and then merge it into our internal repository.

[PLeVasseur]

This is great! Thank you for sharing.

I circulated this to our Summer of Code students for Eclipse uProtocol.

I like how you have clearly marked deep dive sections.

I'm still gathering up feedback and will report back again in 1-2 more days. 🙂

[elBoberido]

Mostly nitpicking :)

[elBoberido]

It took me some time to understand the image. What do you think of something like this

                 Shared
          ^      Memory      ^ 
          |                  |
   0x4000 |  +------------*  | 0xD000
          |  |            |  |
          |  +------------*  |
          |  | payload    |  |
          |  +------------* <--------------
          |  |            |  |            | offset to payload
   0x3000 |--+------------*--| 0xC000 -----
          |                  |
          |                  |
          |                  |
         ---                ---
     Address Space      Address Space
       Publisher          Subscriber

[PLeVasseur]

Wanted to say thanks again for this article! It was well-recieved.

I collected some feedback, some still may be coming in. Whether it makes sense to address these in this article or a future one, please make the call!

Could you go into a bit more detail on how shared-memory is used when the memory is allocated elsewhere e.g. in GPU memory? Are there any design details to iceoryx2 which come into play here?