void ParCompactionManager::follow_marking_stacks() {
do {
// Drain the overflow stack first, to allow stealing from the marking stack.
oop obj;
while (marking_stack()->pop_overflow(obj)) {
follow_contents(obj);
}
while (marking_stack()->pop_local(obj)) {
follow_contents(obj);
}
// Process ObjArrays one at a time to avoid marking stack bloat.
ObjArrayTask task;
if (_objarray_stack.pop_overflow(task) || _objarray_stack.pop_local(task)) {
follow_contents((objArrayOop)task.obj(), task.index());
}
} while (!marking_stacks_empty());
assert(marking_stacks_empty(), "Sanity");
}
ParCompactionManager::ParCompactionManager() :
_action(CopyAndUpdate),
_region_stack(NULL),
_region_stack_index((uint)max_uintx) {
ParallelScavengeHeap* heap = ParallelScavengeHeap::heap();
_old_gen = heap->old_gen();
_start_array = old_gen()->start_array();
marking_stack()->initialize();
_objarray_stack.initialize();
}
ParCompactionManager::ParCompactionManager() :
_action(CopyAndUpdate),
_region_stack(NULL),
_region_stack_index((uint)max_uintx) {
ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap();
assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, "Sanity");
_old_gen = heap->old_gen();
_start_array = old_gen()->start_array();
marking_stack()->initialize();
_objarray_stack.initialize();
}
ParCompactionManager::ParCompactionManager() :
_action(CopyAndUpdate) {
ParallelScavengeHeap* heap = ParallelScavengeHeap::heap();
_old_gen = heap->old_gen();
_start_array = old_gen()->start_array();
marking_stack()->initialize();
_objarray_stack.initialize();
_region_stack.initialize();
reset_bitmap_query_cache();
}
void ParCompactionManager::follow_marking_stacks() {
do {
// Drain the overflow stack first, to allow stealing from the marking stack.
oop obj;
while (marking_stack()->pop_overflow(obj)) {
obj->follow_contents(this);
}
while (marking_stack()->pop_local(obj)) {
obj->follow_contents(this);
}
// Process ObjArrays one at a time to avoid marking stack bloat.
ObjArrayTask task;
if (_objarray_stack.pop_overflow(task)) {
objArrayKlass* const k = (objArrayKlass*)task.obj()->blueprint();
k->oop_follow_contents(this, task.obj(), task.index());
} else if (_objarray_stack.pop_local(task)) {
objArrayKlass* const k = (objArrayKlass*)task.obj()->blueprint();
k->oop_follow_contents(this, task.obj(), task.index());
}
} while (!marking_stacks_empty());
assert(marking_stacks_empty(), "Sanity");
}