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Re: emacs and large-address awareness under recent snapshots

On 8/10/2011 11:28 AM, Ken Brown wrote:

Would it be possible to accomplish the same goal without using bss_sbrk and the static heap? In
other words, can one save the information on the Cygwin heap as part of emacs.exe, so that when
emacs is run the heap gets restored? I know virtually nothing about the structure of .exe files and
how the loader works, so I have no idea whether that's feasible.

I would think so. The trick is knowing what pages contain the Cygwin heap. As for the other approach, these need to get dumped as initialized data segments. It might not be too hard if the Cygwin heap provides functions telling you where it starts and ends (more generally, the ranges of pages in which it lies).

I begin to wonder, though, whether this would mean having
to provide two different copies of emacs, one with the
heap at 0x2... and one with it at 0x8...

Best wishes -- Eliot Moss

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