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6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()

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In os::Linux::rebuild_cpu_to_node_map() fix the size of the CPU bitmap. Fixed arithmetic in MutableNUMASpace::adaptive_chunk_size() that could cause overflows and underflows of the chunk_size variable.

Reviewed-by: apetrusenko
This commit is contained in:
Igor Veresov 2008-12-03 14:18:57 -08:00
parent 16aa57cb4b
commit af509dd90d
7 changed files with 96 additions and 21 deletions
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24
hotspot/src/os/solaris/vm/os_solaris.cpp
View file

@ -4638,7 +4638,7 @@ void os::Solaris::synchronization_init() {
}
}
void os::Solaris::liblgrp_init() {
bool os::Solaris::liblgrp_init() {
void *handle = dlopen("liblgrp.so.1", RTLD_LAZY);
if (handle != NULL) {
os::Solaris::set_lgrp_home(CAST_TO_FN_PTR(lgrp_home_func_t, dlsym(handle, "lgrp_home")));
@ -4653,9 +4653,9 @@ void os::Solaris::liblgrp_init() {
lgrp_cookie_t c = lgrp_init(LGRP_VIEW_CALLER);
set_lgrp_cookie(c);
} else {
warning("your OS does not support NUMA");
return true;
}
return false;
}
void os::Solaris::misc_sym_init() {
@ -4824,9 +4824,25 @@ jint os::init_2(void) {
vm_page_size()));
Solaris::libthread_init();
if (UseNUMA) {
Solaris::liblgrp_init();
if (!Solaris::liblgrp_init()) {
UseNUMA = false;
} else {
size_t lgrp_limit = os::numa_get_groups_num();
int *lgrp_ids = NEW_C_HEAP_ARRAY(int, lgrp_limit);
size_t lgrp_num = os::numa_get_leaf_groups(lgrp_ids, lgrp_limit);
FREE_C_HEAP_ARRAY(int, lgrp_ids);
if (lgrp_num < 2) {
// There's only one locality group, disable NUMA.
UseNUMA = false;
}
}
if (!UseNUMA && ForceNUMA) {
UseNUMA = true;
}
}
Solaris::misc_sym_init();
Solaris::signal_sets_init();
Solaris::init_signal_mem();