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src/hotspot/share/gc/shared/cardTable.cpp
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rev 58060 : [mq]: 8238999-iklam-review
*** 49,82 ****
_page_size(os::vm_page_size()),
_byte_map_size(0),
_byte_map(NULL),
_byte_map_base(NULL),
_cur_covered_regions(0),
! _covered(NULL),
! _committed(NULL),
_guard_region()
{
assert((uintptr_t(_whole_heap.start()) & (card_size - 1)) == 0, "heap must start at card boundary");
assert((uintptr_t(_whole_heap.end()) & (card_size - 1)) == 0, "heap must end at card boundary");
assert(card_size <= 512, "card_size must be less than 512"); // why?
-
- _covered = new MemRegion[_max_covered_regions];
- if (_covered == NULL) {
- vm_exit_during_initialization("Could not allocate card table covered region set.");
- }
}
CardTable::~CardTable() {
! if (_covered) {
! delete[] _covered;
! _covered = NULL;
! }
! if (_committed) {
! delete[] _committed;
! _committed = NULL;
! }
}
void CardTable::initialize() {
_guard_index = cards_required(_whole_heap.word_size()) - 1;
_last_valid_index = _guard_index - 1;
--- 49,71 ----
_page_size(os::vm_page_size()),
_byte_map_size(0),
_byte_map(NULL),
_byte_map_base(NULL),
_cur_covered_regions(0),
! _covered(MemRegion::create(_max_covered_regions, mtGC)),
! _committed(MemRegion::create(_max_covered_regions, mtGC)),
_guard_region()
{
assert((uintptr_t(_whole_heap.start()) & (card_size - 1)) == 0, "heap must start at card boundary");
assert((uintptr_t(_whole_heap.end()) & (card_size - 1)) == 0, "heap must end at card boundary");
assert(card_size <= 512, "card_size must be less than 512"); // why?
}
CardTable::~CardTable() {
! FREE_C_HEAP_ARRAY(MemRegion, _covered);
! FREE_C_HEAP_ARRAY(MemRegion, _committed);
}
void CardTable::initialize() {
_guard_index = cards_required(_whole_heap.word_size()) - 1;
_last_valid_index = _guard_index - 1;
*** 85,98 ****
HeapWord* low_bound = _whole_heap.start();
HeapWord* high_bound = _whole_heap.end();
_cur_covered_regions = 0;
- _committed = new MemRegion[_max_covered_regions];
- if (_committed == NULL) {
- vm_exit_during_initialization("Could not allocate card table committed region set.");
- }
const size_t rs_align = _page_size == (size_t) os::vm_page_size() ? 0 :
MAX2(_page_size, (size_t) os::vm_allocation_granularity());
ReservedSpace heap_rs(_byte_map_size, rs_align, false);
--- 74,83 ----
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