Merge atomic counter inc/dec functions and use them consistently #3796
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This resurrects #3644 (reverted in #3781) with a very slight tweak to ensure that
#include "caml/misc.h"
brings inatomic_uintnat
. There's no particular reason to expect that it should, but it has done in the past and some code out there depends on it. There's now a circular dependency:misc.h
getsatomic_uintnat
fromcamlatomic.h
andcamlatomic.h
getsCAMLassert
frommisc.h
. Resolved by moving the#include "camlatomic.h"
down into the guts ofmisc.h
.In an ideal world we wouldn't have a file called
misc.h
.