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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes

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Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv

Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
This commit is contained in:
Coleen Phillimore 2008-04-13 17:43:42 -04:00
parent 680ecf1611
commit 4a831d45f0
273 changed files with 6585 additions and 2993 deletions
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94
hotspot/src/share/vm/gc_implementation/shared/markSweep.cpp
View file

@ -36,16 +36,16 @@ PreservedMark* MarkSweep::_preserved_marks = NULL;
ReferenceProcessor* MarkSweep::_ref_processor = NULL;
#ifdef VALIDATE_MARK_SWEEP
GrowableArray<oop*>* MarkSweep::_root_refs_stack = NULL;
GrowableArray<void*>* MarkSweep::_root_refs_stack = NULL;
GrowableArray<oop> * MarkSweep::_live_oops = NULL;
GrowableArray<oop> * MarkSweep::_live_oops_moved_to = NULL;
GrowableArray<size_t>* MarkSweep::_live_oops_size = NULL;
size_t MarkSweep::_live_oops_index = 0;
size_t MarkSweep::_live_oops_index_at_perm = 0;
GrowableArray<oop*>* MarkSweep::_other_refs_stack = NULL;
GrowableArray<oop*>* MarkSweep::_adjusted_pointers = NULL;
bool MarkSweep::_pointer_tracking = false;
bool MarkSweep::_root_tracking = true;
GrowableArray<void*>* MarkSweep::_other_refs_stack = NULL;
GrowableArray<void*>* MarkSweep::_adjusted_pointers = NULL;
bool MarkSweep::_pointer_tracking = false;
bool MarkSweep::_root_tracking = true;
GrowableArray<HeapWord*>* MarkSweep::_cur_gc_live_oops = NULL;
GrowableArray<HeapWord*>* MarkSweep::_cur_gc_live_oops_moved_to = NULL;
@ -59,7 +59,6 @@ void MarkSweep::revisit_weak_klass_link(Klass* k) {
_revisit_klass_stack->push(k);
}
void MarkSweep::follow_weak_klass_links() {
// All klasses on the revisit stack are marked at this point.
// Update and follow all subklass, sibling and implementor links.
@ -69,44 +68,15 @@ void MarkSweep::follow_weak_klass_links() {
follow_stack();
}
MarkSweep::FollowRootClosure MarkSweep::follow_root_closure;
void MarkSweep::mark_and_follow(oop* p) {
assert(Universe::heap()->is_in_reserved(p),
"we should only be traversing objects here");
oop m = *p;
if (m != NULL && !m->mark()->is_marked()) {
mark_object(m);
m->follow_contents(); // Follow contents of the marked object
}
}
void MarkSweep::_mark_and_push(oop* p) {
// Push marked object, contents will be followed later
oop m = *p;
mark_object(m);
_marking_stack->push(m);
}
void MarkSweep::FollowRootClosure::do_oop(oop* p) { follow_root(p); }
void MarkSweep::FollowRootClosure::do_oop(narrowOop* p) { follow_root(p); }
MarkSweep::MarkAndPushClosure MarkSweep::mark_and_push_closure;
void MarkSweep::follow_root(oop* p) {
assert(!Universe::heap()->is_in_reserved(p),
"roots shouldn't be things within the heap");
#ifdef VALIDATE_MARK_SWEEP
if (ValidateMarkSweep) {
guarantee(!_root_refs_stack->contains(p), "should only be in here once");
_root_refs_stack->push(p);
}
#endif
oop m = *p;
if (m != NULL && !m->mark()->is_marked()) {
mark_object(m);
m->follow_contents(); // Follow contents of the marked object
}
follow_stack();
}
MarkSweep::FollowRootClosure MarkSweep::follow_root_closure;
void MarkSweep::MarkAndPushClosure::do_oop(oop* p) { mark_and_push(p); }
void MarkSweep::MarkAndPushClosure::do_oop(narrowOop* p) { mark_and_push(p); }
void MarkSweep::follow_stack() {
while (!_marking_stack->is_empty()) {
@ -118,6 +88,7 @@ void MarkSweep::follow_stack() {
MarkSweep::FollowStackClosure MarkSweep::follow_stack_closure;
void MarkSweep::FollowStackClosure::do_void() { follow_stack(); }
// We preserve the mark which should be replaced at the end and the location that it
// will go. Note that the object that this markOop belongs to isn't currently at that
@ -142,6 +113,9 @@ void MarkSweep::preserve_mark(oop obj, markOop mark) {
MarkSweep::AdjustPointerClosure MarkSweep::adjust_root_pointer_closure(true);
MarkSweep::AdjustPointerClosure MarkSweep::adjust_pointer_closure(false);
void MarkSweep::AdjustPointerClosure::do_oop(oop* p) { adjust_pointer(p, _is_root); }
void MarkSweep::AdjustPointerClosure::do_oop(narrowOop* p) { adjust_pointer(p, _is_root); }
void MarkSweep::adjust_marks() {
assert(_preserved_oop_stack == NULL ||
_preserved_oop_stack->length() == _preserved_mark_stack->length(),
@ -187,7 +161,7 @@ void MarkSweep::restore_marks() {
#ifdef VALIDATE_MARK_SWEEP
void MarkSweep::track_adjusted_pointer(oop* p, oop newobj, bool isroot) {
void MarkSweep::track_adjusted_pointer(void* p, bool isroot) {
if (!ValidateMarkSweep)
return;
@ -201,7 +175,7 @@ void MarkSweep::track_adjusted_pointer(oop* p, oop newobj, bool isroot) {
if (index != -1) {
int l = _root_refs_stack->length();
if (l > 0 && l - 1 != index) {
oop* last = _root_refs_stack->pop();
void* last = _root_refs_stack->pop();
assert(last != p, "should be different");
_root_refs_stack->at_put(index, last);
} else {
@ -211,19 +185,17 @@ void MarkSweep::track_adjusted_pointer(oop* p, oop newobj, bool isroot) {
}
}
void MarkSweep::check_adjust_pointer(oop* p) {
void MarkSweep::check_adjust_pointer(void* p) {
_adjusted_pointers->push(p);
}
class AdjusterTracker: public OopClosure {
public:
AdjusterTracker() {};
void do_oop(oop* o) { MarkSweep::check_adjust_pointer(o); }
AdjusterTracker() {}
void do_oop(oop* o) { MarkSweep::check_adjust_pointer(o); }
void do_oop(narrowOop* o) { MarkSweep::check_adjust_pointer(o); }
};
void MarkSweep::track_interior_pointers(oop obj) {
if (ValidateMarkSweep) {
_adjusted_pointers->clear();
@ -234,7 +206,6 @@ void MarkSweep::track_interior_pointers(oop obj) {
}
}
void MarkSweep::check_interior_pointers() {
if (ValidateMarkSweep) {
_pointer_tracking = false;
@ -242,7 +213,6 @@ void MarkSweep::check_interior_pointers() {
}
}
void MarkSweep::reset_live_oop_tracking(bool at_perm) {
if (ValidateMarkSweep) {
guarantee((size_t)_live_oops->length() == _live_oops_index, "should be at end of live oops");
@ -250,7 +220,6 @@ void MarkSweep::reset_live_oop_tracking(bool at_perm) {
}
}
void MarkSweep::register_live_oop(oop p, size_t size) {
if (ValidateMarkSweep) {
_live_oops->push(p);
@ -283,7 +252,6 @@ void MarkSweep::live_oop_moved_to(HeapWord* q, size_t size,
}
}
void MarkSweep::compaction_complete() {
if (RecordMarkSweepCompaction) {
GrowableArray<HeapWord*>* _tmp_live_oops = _cur_gc_live_oops;
@ -299,7 +267,6 @@ void MarkSweep::compaction_complete() {
}
}
void MarkSweep::print_new_location_of_heap_address(HeapWord* q) {
if (!RecordMarkSweepCompaction) {
tty->print_cr("Requires RecordMarkSweepCompaction to be enabled");
@ -318,7 +285,7 @@ void MarkSweep::print_new_location_of_heap_address(HeapWord* q) {
HeapWord* new_oop = _last_gc_live_oops_moved_to->at(i);
size_t offset = (q - old_oop);
tty->print_cr("Address " PTR_FORMAT, q);
tty->print_cr(" Was in oop " PTR_FORMAT ", size %d, at offset %d", old_oop, sz, offset);
tty->print_cr(" Was in oop " PTR_FORMAT ", size " SIZE_FORMAT ", at offset " SIZE_FORMAT, old_oop, sz, offset);
tty->print_cr(" Now in oop " PTR_FORMAT ", actual address " PTR_FORMAT, new_oop, new_oop + offset);
return;
}
@ -328,23 +295,16 @@ void MarkSweep::print_new_location_of_heap_address(HeapWord* q) {
}
#endif //VALIDATE_MARK_SWEEP
MarkSweep::IsAliveClosure MarkSweep::is_alive;
MarkSweep::IsAliveClosure MarkSweep::is_alive;
void MarkSweep::KeepAliveClosure::do_oop(oop* p) {
#ifdef VALIDATE_MARK_SWEEP
if (ValidateMarkSweep) {
if (!Universe::heap()->is_in_reserved(p)) {
_root_refs_stack->push(p);
} else {
_other_refs_stack->push(p);
}
}
#endif
mark_and_push(p);
}
void MarkSweep::IsAliveClosure::do_object(oop p) { ShouldNotReachHere(); }
bool MarkSweep::IsAliveClosure::do_object_b(oop p) { return p->is_gc_marked(); }
MarkSweep::KeepAliveClosure MarkSweep::keep_alive;
void MarkSweep::KeepAliveClosure::do_oop(oop* p) { MarkSweep::KeepAliveClosure::do_oop_work(p); }
void MarkSweep::KeepAliveClosure::do_oop(narrowOop* p) { MarkSweep::KeepAliveClosure::do_oop_work(p); }
void marksweep_init() { /* empty */ }
#ifndef PRODUCT