On Thu, Jul 11, 2019 at 05:26:34PM +0000, David Holland wrote: > In practice (across arbitrary platforms) I wouldn't count on malloc > necessarily respecting any of these limits,
Indeed, which was probably a large reason why this code is trying to find out how much memory it should use. In our attempt to be cross-platform, we check (with the appropriate #ifdefs): - sysctl's HW_USERMEM and HW_MEMSIZE - sysinfo - getrlimit's RLIMIT_AS, RLIMIT_RSS, (and perhaps RLIMIT_DATA if neither of the other two are defined; awaiting code review) - sysconf's _SC_PAGE_SIZE and _SC_PHYS_PAGES and pick the lowest out of all of them. Cheers, - Graham
