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6711316: Open source the Garbage-First garbage collector

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First mercurial integration of the code for the Garbage-First garbage collector.

Reviewed-by: apetrusenko, iveresov, jmasa, sgoldman, tonyp, ysr
This commit is contained in:
Y. Srinivas Ramakrishna 2008-06-05 15:57:56 -07:00
parent 39463bb3fc
commit 18f3386a98
215 changed files with 36088 additions and 1249 deletions
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31
hotspot/src/share/vm/memory/cardTableModRefBS.cpp
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@ -299,6 +299,17 @@ void CardTableModRefBS::write_ref_field_work(void* field, oop newVal) {
}
bool CardTableModRefBS::claim_card(size_t card_index) {
jbyte val = _byte_map[card_index];
if (val != claimed_card_val()) {
jbyte res = Atomic::cmpxchg((jbyte) claimed_card_val(), &_byte_map[card_index], val);
if (res == val)
return true;
else return false;
}
return false;
}
void CardTableModRefBS::non_clean_card_iterate(Space* sp,
MemRegion mr,
DirtyCardToOopClosure* dcto_cl,
@ -398,7 +409,7 @@ void CardTableModRefBS::dirty_MemRegion(MemRegion mr) {
}
}
void CardTableModRefBS::invalidate(MemRegion mr) {
void CardTableModRefBS::invalidate(MemRegion mr, bool whole_heap) {
for (int i = 0; i < _cur_covered_regions; i++) {
MemRegion mri = mr.intersection(_covered[i]);
if (!mri.is_empty()) dirty_MemRegion(mri);
@ -426,11 +437,15 @@ void CardTableModRefBS::clear(MemRegion mr) {
}
}
void CardTableModRefBS::dirty(MemRegion mr) {
jbyte* first = byte_for(mr.start());
jbyte* last = byte_after(mr.last());
memset(first, dirty_card, last-first);
}
// NOTES:
// (1) Unlike mod_oop_in_space_iterate() above, dirty_card_iterate()
// iterates over dirty cards ranges in increasing address order.
// (2) Unlike, e.g., dirty_card_range_after_preclean() below,
// this method does not make the dirty cards prelceaned.
void CardTableModRefBS::dirty_card_iterate(MemRegion mr,
MemRegionClosure* cl) {
for (int i = 0; i < _cur_covered_regions; i++) {
@ -456,7 +471,9 @@ void CardTableModRefBS::dirty_card_iterate(MemRegion mr,
}
}
MemRegion CardTableModRefBS::dirty_card_range_after_preclean(MemRegion mr) {
MemRegion CardTableModRefBS::dirty_card_range_after_reset(MemRegion mr,
bool reset,
int reset_val) {
for (int i = 0; i < _cur_covered_regions; i++) {
MemRegion mri = mr.intersection(_covered[i]);
if (!mri.is_empty()) {
@ -473,8 +490,10 @@ MemRegion CardTableModRefBS::dirty_card_range_after_preclean(MemRegion mr) {
dirty_cards++, next_entry++);
MemRegion cur_cards(addr_for(cur_entry),
dirty_cards*card_size_in_words);
for (size_t i = 0; i < dirty_cards; i++) {
cur_entry[i] = precleaned_card;
if (reset) {
for (size_t i = 0; i < dirty_cards; i++) {
cur_entry[i] = reset_val;
}
}
return cur_cards;
}