Re: Userdata environment

[Shmuel Zeigerman <shmuz@...>]

Alex Davies wrote:
> I'm afraid I still can't imagine a scenario where that's possible. I 
> mean, it doesn't keep dead keys around forever. Just until it needs to 
> grow the table, and then it can remove them all.. and in doing so 
> discover that it never needed to grow the table in the first place. The 
> only way it could consume all available memory would be if at some point 
> you had enough live keys in the table to do that.

Here is a pure-Lua test case that is very close to what my application 
is doing. (Change N if needed).
  local N = 6
  local tb = setmetatable ({}, { __mode="k" })
  print(collectgarbage"count")
  for n=1,N do
    for k=1,1e6 do tb[{}] = true end
    print(collectgarbage"count")
  end

--
Shmuel