Using `message_queue` with `windows_shared_memory`

Open
#211 0 comments 4 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Assessment

Difficulty
5/5
Estimated time
Over a week
Newbie friendliness
28/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Stale
Tech stack
cpp

Research direction

Start by reading message_queue_t and its current shared_memory_object usage, then compare managed_open_or_create_impl with windows_shared_memory. Determine how the underlying memory abstraction could be selected and how destruction and message_queue_t::remove semantics should work; update the destructor documentation if the design is accepted.

Written by the indexing model from the issue text.

Description

We're currently using message_queue on Windows, but want to avoid files being created on the user's filesystem (even in the application's config/cache directory). Moreover, we'd like to have the semantics of windows_shared_memory (mostly the destruction once all handles to the memory are closed).

Currently, message_queue uses shared_memory_object. Would it be possible for users to specify the underlying abstraction (e.g. message_queue_t<offset_ptr<void>, windows_shared_memory>)?

I experimented a bit by using managed_open_or_create_impl<windows_shared_memory, 0, false, false>, which worked fine for me (I might have missed some bugs as I don't know IPC too well). One downside is that message_queue_t::remove can't be used with windows_shared_memory, as it doesn't provide that functionality (the documentation for ~message_queue_t should be updated, too).

I'd be fine if this was done via a #define, but it would be nicer if an approach similar to the previously mentioned could be taken.
If this is something that could get included in the library, I'd be fine with implementing it.

Dominant language
C++
Stars
185
Forks
131
PR merge metrics
No merged PRs in 30d

Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

More from boostorg/interprocess

All issues in boostorg/interprocess

Similar issues

More C++ issues

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.