Make work items void and parameterless making the work queue api simpler

[EmJayGee]

The work queue api supported passing a general list of parameters to a lambda or other callable and also the callable having a return value that at least in theory could be gotten although the api didn't expose the mechanism to get to it.

This revision simplifies the api to be only void() so that the enqueue() api can be augmented with the ability to enrichen the queued item with a string description which can be composed via the formatting library.

Perhaps this is overkill and an m::wsstring or the like should have been the 2nd parameter, It would be nice to have an experimental language feature to have like parameter groups (like the format string and the parameter lists) for vformat() calls together and be able to specify and move them as a group. Maybe the next next language.

[Copilot]

Pull request overview

This PR simplifies the work queue API by restricting work items to parameterless void() callables, removing the previous support for arbitrary parameters and return values. The simplification enables adding optional string descriptions to enqueued work items via a format string API.

Changes:

• Removed template-based runnable_work_item class that supported arbitrary parameters and return values
• Updated enqueue() to accept only void() callables with optional format string descriptions
• Moved work_item implementation from header to separate source files and changed namespace from work_queue_impl to work_queue_impl
• Changed description() return type from std::wstring to m::not_null<m::cwzstring> for efficiency

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
test_work_queue.cpp	Updated test cases to use new simplified enqueue API and added test for description feature
work_queue_base.h	Updated do_enqueue signature to accept packaged_task and description, removed do_wait_until
work_queue_base.cpp	Consolidated work item creation into do_enqueue, removed do_wait_until implementation
work_item.h	New file defining work_item class in work_queue_impl namespace
work_item.cpp	New file implementing work_item methods moved from header
work_queue.h	Removed inline runnable_work_item template class, simplified enqueue API, added description formatting
thread_description.h	Added constructor accepting cwzstring for compatibility

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[Copilot]

Pull request overview

Copilot reviewed 7 out of 7 changed files in this pull request and generated 3 comments.

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