pinning objects in ffi.gc() finalizers
- From: Cosmin Apreutesei <cosmin.apreutesei@xxxxxxxxx>
- To: luajit@xxxxxxxxxxxxx
- Date: Wed, 2 Jul 2014 12:37:24 +0300
Hi,
I noticed that pinning objects in ffi.gc finalizers() doesn't work, at
least not when the program exits -- it's like the upvalues of the
finalizer are weak references. Is this a bug or a feature?
Example:
local heap = ffi.gc(CreateHeap(), FreeHeap)
local mem = ffi.gc(CreateMem(heap, size), function(mem)
FreeMem(heap, mem) -- heap pinned in mem's finalizer
end)
When the program exits, sometimes heap's finalizer is called before
mem's finalizer, even though mem's finalizer pins heap.
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