[go-nuts] Buffered channel memory layout?

Hi all,

Is there a description out there about what the memory backing of a buffered channel looks like? I.e., does

    c := make(chan int, 10000)

allocate something similar to a [10000]int up front, or is there a more append-like behavior that allocates slices on demand? If the latter, can the buffer "shrink" again when not in use?

I ask this to decide between manually handling what might be a temporarily large buffer of objects (larger than ints), or let this just be handled by the channel itself.

Of course I can and should benchmark, but some background info would be nice anyway. :)

//jb

(Sent from my phone - please excuse brevity and typos.)