Andrew Dunstan <andrew(at)dunslane(dot)net> writes:
> We have the following warning on Windows:
> pgarch.c:349: warning: implicit declaration of function `sleep'
> To fix it we could include the right header (which appears to be
> <stdlib.h> in the Windows/Mingw case), or we could replace the call by a
> call to pg_usleep().
<stdlib.h> is included automatically by c.h, so that surely won't fix it.
I have some recollection that we invented pg_usleep in part because we
wanted to not use sleep() at all in the backend, but I don't recall why
(and the reasoning might not apply to the archiver process, anyway).
regards, tom lane