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8220310: Implementation: NUMA-Aware Memory Allocation for G1, Mutator (1/3)

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Reviewed-by: kbarrett, sjohanss, tschatzl, pliden
This commit is contained in:
Sangheon Kim 2019-11-13 10:49:12 -08:00
parent b171594072
commit 52116d808c
32 changed files with 990 additions and 88 deletions
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17
src/hotspot/os/linux/os_linux.cpp
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@ -3007,6 +3007,23 @@ int os::numa_get_group_id() {
return 0;
}
int os::numa_get_group_id_for_address(const void* address) {
#ifndef MPOL_F_NODE
#define MPOL_F_NODE (1<<0) // Return next IL mode instead of node mask
#endif
#ifndef MPOL_F_ADDR
#define MPOL_F_ADDR (1<<1) // Look up VMA using address
#endif
int id = 0;
if (syscall(SYS_get_mempolicy, &id, NULL, 0, const_cast<void*>(address), MPOL_F_NODE | MPOL_F_ADDR) == -1) {
return -1;
}
return id;
}
int os::Linux::get_existing_num_nodes() {
int node;
int highest_node_number = Linux::numa_max_node();