Instead of this rigmarole with pg_usleep() being a macro to pgwin32_backend_usleep, why don't we just call the function in backend/port/win32/signal.c pg_usleep(), and put something like
#if defined(FRONTEND) || !defined(WIN32)
around the version in src/port/pgsleep.c? We don't really want
that version present in the backend at all on Windows, ISTM.
regards, tom lane
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TIP 2: Don't 'kill -9' the postmaster
