Large object space
The large object space helps prevent fragmentation by putting large objects in mem maps insead of the alloc space.
Instead of mark and live bitmaps it uses mark and live sets.
Change-Id: Iada5db70b88a1572007d8af921fa353681a55dc7
diff --git a/src/mark_sweep.h b/src/mark_sweep.h
index d6218dc..0de75c5 100644
--- a/src/mark_sweep.h
+++ b/src/mark_sweep.h
@@ -101,6 +101,10 @@
void Sweep(bool partial, bool swap_bitmaps)
EXCLUSIVE_LOCKS_REQUIRED(Locks::heap_bitmap_lock_);
+ // Sweeps unmarked objects to complete the garbage collection.
+ void SweepLargeObjects(bool swap_bitmaps)
+ EXCLUSIVE_LOCKS_REQUIRED(GlobalSynchronization::heap_bitmap_lock_);
+
// Sweep only pointers within an array. WARNING: Trashes objects.
void SweepArray(TimingLogger& logger, MarkStack* allocation_stack_, bool swap_bitmaps)
EXCLUSIVE_LOCKS_REQUIRED(Locks::heap_bitmap_lock_);
@@ -135,8 +139,10 @@
return freed_objects_;
}
- void SetCondemned(Object* condemned) {
- condemned_ = condemned;
+ // Everything inside the immune range is marked.
+ void SetImmuneRange(Object* begin, Object* end) {
+ immune_begin_ = begin;
+ immune_end_ = end;
}
void SweepSystemWeaks(bool swap_bitmaps)
@@ -376,7 +382,9 @@
Object* finger_;
- Object* condemned_;
+ // Immune range, every object inside the immune range is assumed to be marked.
+ Object* immune_begin_;
+ Object* immune_end_;
Object* soft_reference_list_;