From ad06ef0efbf7cafba5074a183fef1ad586f38caa Mon Sep 17 00:00:00 2001 From: Alex Bennée Date: Fri, 24 Jul 2020 07:44:57 +0100 Subject: util: add qemu_get_host_physmem utility function This will be used in a future patch. For POSIX systems _SC_PHYS_PAGES isn't standardised but at least appears in the man pages for Open/FreeBSD. The result is advisory so any users of it shouldn't just fail if we can't work it out. The win32 stub currently returns 0 until someone with a Windows system can develop and test a patch. Signed-off-by: Alex Bennée Reviewed-by: Richard Henderson Cc: BALATON Zoltan Cc: Christian Ehrhardt Message-Id: <20200724064509.331-5-alex.bennee@linaro.org> --- include/qemu/osdep.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include') diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h index 45c217aa28..0b1298b3c9 100644 --- a/include/qemu/osdep.h +++ b/include/qemu/osdep.h @@ -668,4 +668,16 @@ static inline void qemu_reset_optind(void) */ char *qemu_get_host_name(Error **errp); +/** + * qemu_get_host_physmem: + * + * Operating system agnostic way of querying host memory. + * + * Returns amount of physical memory on the system. This is purely + * advisery and may return 0 if we can't work it out. At the other + * end we saturate to SIZE_MAX if you are lucky enough to have that + * much memory. + */ +size_t qemu_get_host_physmem(void); + #endif -- cgit v1.2.3-55-g7522