diff options
| -rw-r--r-- | include/qemu/osdep.h | 12 | ||||
| -rw-r--r-- | util/oslib-posix.c | 15 | ||||
| -rw-r--r-- | util/oslib-win32.c | 6 |
3 files changed, 33 insertions, 0 deletions
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 diff --git a/util/oslib-posix.c b/util/oslib-posix.c index d923674624..ad8001a4ad 100644 --- a/util/oslib-posix.c +++ b/util/oslib-posix.c @@ -841,3 +841,18 @@ char *qemu_get_host_name(Error **errp) return g_steal_pointer(&hostname); } + +size_t qemu_get_host_physmem(void) +{ +#ifdef _SC_PHYS_PAGES + long pages = sysconf(_SC_PHYS_PAGES); + if (pages > 0) { + if (pages > SIZE_MAX / qemu_real_host_page_size) { + return SIZE_MAX; + } else { + return pages * qemu_real_host_page_size; + } + } +#endif + return 0; +} diff --git a/util/oslib-win32.c b/util/oslib-win32.c index 7eedbe5859..31030463cc 100644 --- a/util/oslib-win32.c +++ b/util/oslib-win32.c @@ -828,3 +828,9 @@ char *qemu_get_host_name(Error **errp) return g_utf16_to_utf8(tmp, size, NULL, NULL, NULL); } + +size_t qemu_get_host_physmem(void) +{ + /* currently unimplemented */ + return 0; +} |