| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | #include "get_system_pagesize.h" |
| 4 | |
| 5 | #if defined(OS_WINDOWS) |
| 6 | #include <windows.h> |
| 7 | |
| 8 | size_t os_get_system_page_size(void) { |
| 9 | static size_t page_size = 0; |
| 10 | |
| 11 | if (!page_size) { |
| 12 | SYSTEM_INFO sys_info; |
| 13 | GetSystemInfo(&sys_info); |
| 14 | |
| 15 | // Set the page size, default to 4096 if for some reason it's invalid |
| 16 | page_size = (sys_info.dwPageSize >= 4096) ? sys_info.dwPageSize : 4096; |
| 17 | } |
| 18 | |
| 19 | return page_size; |
| 20 | } |
| 21 | |
| 22 | #else |
| 23 | |
| 24 | #include <unistd.h> |
| 25 | |
| 26 | size_t os_get_system_page_size(void) { |
| 27 | static long int page_size = 0; |
| 28 | |
| 29 | if(unlikely(!page_size)) { |
| 30 | page_size = sysconf(_SC_PAGE_SIZE); |
| 31 | if (unlikely(page_size <= 4096)) |
| 32 | page_size = 4096; |
| 33 | } |
| 34 | |
| 35 | return page_size; |
| 36 | } |
| 37 | |
| 38 | #endif |