Allow GC of arguments during microtask execution

[Nevay]

No description provided.

[WyriHaximus]

So how does this work? You first pass all the elements of the $args array into the argument list for $callback, and then you overwrite $args with an empty array and also "push" that to the same argument list?

[Nevay]

Yes, it overwrites the $args array (and pushes zero arguments to the argument list) after pushing the original arguments and before invoking the callback.

[WyriHaximus]

Near trick, it's a tad confusing when you first read the line tbh.

[HLeithner]

A better documentation what happens here would be good especially for people like me that doesn't see what's happening at the first glance and why it's needed.

[bwoebi]

The alternative implementation would be \call_user_func_array(...$this->microtaskQueue->dequeue()); directly. Which looks cleaner to me than this clever hack :-D

... Though, it might be that this doesn't work here, as cufa() stores its own CoW copy of its args until its end...

[trowski]

@Nevay Thanks for finding this and for the creative solution. Seems we rarely pass arguments, let alone instantiating objects in the argument list, so this hadn't come up. We appreciate the real-world testing to find these cases!