Support Custom Allocator of Channel

[lvyuemeng]

Is it possible to add a custom allocator based on feature allocator_api equipped with alloc::alloc::Allocator
for channel or other allocated data structure? e.g.

Sender<T, A>/Receiver<T,A>

Thus it would be helpful for shared memory related project.

[notgull]

We are waiting for the allocator_api nightly feature to become stable before we add this. I am currently opposed to a nightly feature due to the rapidly changing design of the current allocator API.

Thus it would be helpful for shared memory related project.

async-channel is meant for intra-program communication rather than between programs. The layout of an async-channel for the same type can be different between two programs, even if both programs were compiled with the same version of Rust. I do not plan on changing this guarantee.

[lvyuemeng]

I want to use it for async process communication of kernel, with a common access in memory.
It's developed from a experimental project evering-ipc.

Anyway, thanks! 🫡