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This commit is contained in:
John R Rose 2009-09-23 23:56:15 -07:00
commit 40d52710f6
99 changed files with 66717 additions and 1266 deletions
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16
hotspot/src/share/vm/gc_implementation/shared/markSweep.hpp
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@ -23,6 +23,7 @@
*/
class ReferenceProcessor;
class DataLayout;
// MarkSweep takes care of global mark-compact garbage collection for a
// GenCollectedHeap using a four-phase pointer forwarding algorithm. All
@ -63,6 +64,9 @@ class MarkSweep : AllStatic {
public:
virtual void do_oop(oop* p);
virtual void do_oop(narrowOop* p);
virtual const bool do_nmethods() const { return true; }
virtual const bool should_remember_mdo() const { return true; }
virtual void remember_mdo(DataLayout* p) { MarkSweep::revisit_mdo(p); }
};
class FollowStackClosure: public VoidClosure {
@ -101,6 +105,7 @@ class MarkSweep : AllStatic {
friend class KeepAliveClosure;
friend class VM_MarkSweep;
friend void marksweep_init();
friend class DataLayout;
//
// Vars
@ -110,6 +115,8 @@ class MarkSweep : AllStatic {
static GrowableArray<oop>* _marking_stack;
// Stack for live klasses to revisit at end of marking phase
static GrowableArray<Klass*>* _revisit_klass_stack;
// Set (stack) of MDO's to revisit at end of marking phase
static GrowableArray<DataLayout*>* _revisit_mdo_stack;
// Space for storing/restoring mark word
static GrowableArray<markOop>* _preserved_mark_stack;
@ -155,6 +162,10 @@ class MarkSweep : AllStatic {
// Class unloading. Update subklass/sibling/implementor links at end of marking phase.
static void follow_weak_klass_links();
// Class unloading. Clear weak refs in MDO's (ProfileData)
// at the end of the marking phase.
static void follow_mdo_weak_refs();
// Debugging
static void trace(const char* msg) PRODUCT_RETURN;
@ -212,7 +223,10 @@ class MarkSweep : AllStatic {
#endif
// Call backs for class unloading
static void revisit_weak_klass_link(Klass* k); // Update subklass/sibling/implementor links at end of marking.
// Update subklass/sibling/implementor links at end of marking.
static void revisit_weak_klass_link(Klass* k);
// For weak refs clearing in MDO's
static void revisit_mdo(DataLayout* p);
};
class PreservedMark VALUE_OBJ_CLASS_SPEC {