1990 }
1991 
1992 bool os::numa_topology_changed()   { return false; }
1993 
1994 size_t os::numa_get_groups_num() {
1995   return 1;
1996 }
1997 
1998 int os::numa_get_group_id() {
1999   return 0;
2000 }
2001 
2002 size_t os::numa_get_leaf_groups(int *ids, size_t size) {
2003   if (size > 0) {
2004     ids[0] = 0;
2005     return 1;
2006   }
2007   return 0;
2008 }
2009 




2010 bool os::get_page_info(char *start, page_info* info) {
2011   return false;
2012 }
2013 
2014 char *os::scan_pages(char *start, char* end, page_info* page_expected, page_info* page_found) {
2015   return end;
2016 }
2017 
2018 
2019 bool os::pd_uncommit_memory(char* addr, size_t size) {
2020 #ifdef __OpenBSD__
2021   // XXX: Work-around mmap/MAP_FIXED bug temporarily on OpenBSD
2022   Events::log(NULL, "Protecting memory [" INTPTR_FORMAT "," INTPTR_FORMAT "] with PROT_NONE", p2i(addr), p2i(addr+size));
2023   return ::mprotect(addr, size, PROT_NONE) == 0;
2024 #else
2025   uintptr_t res = (uintptr_t) ::mmap(addr, size, PROT_NONE,
2026                                      MAP_PRIVATE|MAP_FIXED|MAP_NORESERVE|MAP_ANONYMOUS, -1, 0);
2027   return res  != (uintptr_t) MAP_FAILED;
2028 #endif
2029 }

1990 }
1991 
1992 bool os::numa_topology_changed()   { return false; }
1993 
1994 size_t os::numa_get_groups_num() {
1995   return 1;
1996 }
1997 
1998 int os::numa_get_group_id() {
1999   return 0;
2000 }
2001 
2002 size_t os::numa_get_leaf_groups(int *ids, size_t size) {
2003   if (size > 0) {
2004     ids[0] = 0;
2005     return 1;
2006   }
2007   return 0;
2008 }
2009 
2010 int os::numa_get_address_id(void* address) {
2011   return 0;
2012 }
2013 
2014 bool os::get_page_info(char *start, page_info* info) {
2015   return false;
2016 }
2017 
2018 char *os::scan_pages(char *start, char* end, page_info* page_expected, page_info* page_found) {
2019   return end;
2020 }
2021 
2022 
2023 bool os::pd_uncommit_memory(char* addr, size_t size) {
2024 #ifdef __OpenBSD__
2025   // XXX: Work-around mmap/MAP_FIXED bug temporarily on OpenBSD
2026   Events::log(NULL, "Protecting memory [" INTPTR_FORMAT "," INTPTR_FORMAT "] with PROT_NONE", p2i(addr), p2i(addr+size));
2027   return ::mprotect(addr, size, PROT_NONE) == 0;
2028 #else
2029   uintptr_t res = (uintptr_t) ::mmap(addr, size, PROT_NONE,
2030                                      MAP_PRIVATE|MAP_FIXED|MAP_NORESERVE|MAP_ANONYMOUS, -1, 0);
2031   return res  != (uintptr_t) MAP_FAILED;
2032 #endif
2033 }