On Sun, Dec 20, 2015 at 10:37:24PM -0500, Ken Brown wrote:
On 12/20/2015 5:33 PM, Paul Eggert wrote:
While thinking over this patch I'd like to propose what should be a
simpler approach. This new proposal is more radical, and so should not
be applied to the emacs-25 branch, but it should make the port to musl
etc. automatic.
The simpler approach is to remove gmalloc.c, and to use the system
memory allocator, i.e., to behave as if SYSTEM_MALLOC is defined on all
platforms.
We can still support hybrid malloc for Cygwin, if SYSTEM_MALLOC wouldn't
work on Cygwin for some reason; and we can support the similar hybrid on
Darwin, if it's still needed.
SYSTEM_MALLOC doesn't work on Cygwin, largely because Cygwin's
malloc doesn't support malloc_set_state and malloc_get_state. There
may be other problems too. (It's been a while since I tried it.)
I don't see how this is possible; malloc_[gs]et_state do not exist on
other systems either. Presumably this is some hack needed for the
dumper, which wouldn't be needed if malloc weren't used pre-dumping.