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src/hotspot/share/gc/shenandoah/shenandoahBarrierSet.hpp

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  9  * This code is distributed in the hope that it will be useful, but WITHOUT
 10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 12  * version 2 for more details (a copy is included in the LICENSE file that
 13  * accompanied this code).
 14  *
 15  * You should have received a copy of the GNU General Public License version
 16  * 2 along with this work; if not, write to the Free Software Foundation,
 17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 18  *
 19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 20  * or visit www.oracle.com if you need additional information or have any
 21  * questions.
 22  *
 23  */
 24 
 25 #ifndef SHARE_GC_SHENANDOAH_SHENANDOAHBARRIERSET_HPP
 26 #define SHARE_GC_SHENANDOAH_SHENANDOAHBARRIERSET_HPP
 27 
 28 #include "gc/shared/barrierSet.hpp"

 29 #include "gc/shenandoah/shenandoahSATBMarkQueueSet.hpp"
 30 
 31 class ShenandoahHeap;
 32 class ShenandoahBarrierSetAssembler;
 33 
 34 class ShenandoahBarrierSet: public BarrierSet {
 35 private:
 36   ShenandoahHeap* const _heap;

 37   BufferNode::Allocator _satb_mark_queue_buffer_allocator;
 38   ShenandoahSATBMarkQueueSet _satb_mark_queue_set;
 39 
 40 public:
 41   ShenandoahBarrierSet(ShenandoahHeap* heap);
 42 
 43   static ShenandoahBarrierSetAssembler* assembler();
 44 
 45   inline static ShenandoahBarrierSet* barrier_set() {
 46     return barrier_set_cast<ShenandoahBarrierSet>(BarrierSet::barrier_set());
 47   }
 48 


 49   static ShenandoahSATBMarkQueueSet& satb_mark_queue_set() {
 50     return barrier_set()->_satb_mark_queue_set;
 51   }
 52 
 53   static bool need_load_reference_barrier(DecoratorSet decorators, BasicType type);
 54   static bool need_keep_alive_barrier(DecoratorSet decorators, BasicType type);
 55 
 56   static bool is_strong_access(DecoratorSet decorators) {
 57     return (decorators & (ON_WEAK_OOP_REF | ON_PHANTOM_OOP_REF)) == 0;
 58   }
 59 
 60   static bool is_weak_access(DecoratorSet decorators) {
 61     return (decorators & ON_WEAK_OOP_REF) != 0;
 62   }
 63 
 64   static bool is_phantom_access(DecoratorSet decorators) {
 65     return (decorators & ON_PHANTOM_OOP_REF) != 0;
 66   }
 67 
 68   static bool is_native_access(DecoratorSet decorators) {

 94 
 95   inline void enqueue(oop obj);
 96 
 97   inline oop load_reference_barrier(oop obj);
 98 
 99   template <class T>
100   inline oop load_reference_barrier_mutator(oop obj, T* load_addr);
101 
102   template <class T>
103   inline oop load_reference_barrier(DecoratorSet decorators, oop obj, T* load_addr);
104 
105   template <typename T>
106   inline oop oop_load(DecoratorSet decorators, T* addr);
107 
108   template <typename T>
109   inline oop oop_cmpxchg(DecoratorSet decorators, T* addr, oop compare_value, oop new_value);
110 
111   template <typename T>
112   inline oop oop_xchg(DecoratorSet decorators, T* addr, oop new_value);
113 





114 private:
115   template <class T>
116   inline void arraycopy_marking(T* src, T* dst, size_t count);
117   template <class T>
118   inline void arraycopy_evacuation(T* src, size_t count);
119   template <class T>
120   inline void arraycopy_update(T* src, size_t count);
121 
122   inline void clone_marking(oop src);
123   inline void clone_evacuation(oop src);
124   inline void clone_update(oop src);
125 
126   template <class T, bool HAS_FWD, bool EVAC, bool ENQUEUE>
127   inline void arraycopy_work(T* src, size_t count);
128 
129   inline bool need_bulk_update(HeapWord* dst);
130 public:
131   // Callbacks for runtime accesses.
132   template <DecoratorSet decorators, typename BarrierSetT = ShenandoahBarrierSet>
133   class AccessBarrier: public BarrierSet::AccessBarrier<decorators, BarrierSetT> {

  9  * This code is distributed in the hope that it will be useful, but WITHOUT
 10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 12  * version 2 for more details (a copy is included in the LICENSE file that
 13  * accompanied this code).
 14  *
 15  * You should have received a copy of the GNU General Public License version
 16  * 2 along with this work; if not, write to the Free Software Foundation,
 17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 18  *
 19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 20  * or visit www.oracle.com if you need additional information or have any
 21  * questions.
 22  *
 23  */
 24 
 25 #ifndef SHARE_GC_SHENANDOAH_SHENANDOAHBARRIERSET_HPP
 26 #define SHARE_GC_SHENANDOAH_SHENANDOAHBARRIERSET_HPP
 27 
 28 #include "gc/shared/barrierSet.hpp"
 29 #include "gc/shenandoah/shenandoahCardTable.hpp"
 30 #include "gc/shenandoah/shenandoahSATBMarkQueueSet.hpp"
 31 
 32 class ShenandoahHeap;
 33 class ShenandoahBarrierSetAssembler;
 34 
 35 class ShenandoahBarrierSet: public BarrierSet {
 36 private:
 37   ShenandoahHeap* const _heap;
 38   ShenandoahCardTable* _card_table;
 39   BufferNode::Allocator _satb_mark_queue_buffer_allocator;
 40   ShenandoahSATBMarkQueueSet _satb_mark_queue_set;
 41 
 42 public:
 43   ShenandoahBarrierSet(ShenandoahHeap* heap, MemRegion heap_region);
 44 
 45   static ShenandoahBarrierSetAssembler* assembler();
 46 
 47   inline static ShenandoahBarrierSet* barrier_set() {
 48     return barrier_set_cast<ShenandoahBarrierSet>(BarrierSet::barrier_set());
 49   }
 50 
 51   inline ShenandoahCardTable* card_table()  { return _card_table; }
 52 
 53   static ShenandoahSATBMarkQueueSet& satb_mark_queue_set() {
 54     return barrier_set()->_satb_mark_queue_set;
 55   }
 56 
 57   static bool need_load_reference_barrier(DecoratorSet decorators, BasicType type);
 58   static bool need_keep_alive_barrier(DecoratorSet decorators, BasicType type);
 59 
 60   static bool is_strong_access(DecoratorSet decorators) {
 61     return (decorators & (ON_WEAK_OOP_REF | ON_PHANTOM_OOP_REF)) == 0;
 62   }
 63 
 64   static bool is_weak_access(DecoratorSet decorators) {
 65     return (decorators & ON_WEAK_OOP_REF) != 0;
 66   }
 67 
 68   static bool is_phantom_access(DecoratorSet decorators) {
 69     return (decorators & ON_PHANTOM_OOP_REF) != 0;
 70   }
 71 
 72   static bool is_native_access(DecoratorSet decorators) {

 98 
 99   inline void enqueue(oop obj);
100 
101   inline oop load_reference_barrier(oop obj);
102 
103   template <class T>
104   inline oop load_reference_barrier_mutator(oop obj, T* load_addr);
105 
106   template <class T>
107   inline oop load_reference_barrier(DecoratorSet decorators, oop obj, T* load_addr);
108 
109   template <typename T>
110   inline oop oop_load(DecoratorSet decorators, T* addr);
111 
112   template <typename T>
113   inline oop oop_cmpxchg(DecoratorSet decorators, T* addr, oop compare_value, oop new_value);
114 
115   template <typename T>
116   inline oop oop_xchg(DecoratorSet decorators, T* addr, oop new_value);
117 
118   template <DecoratorSet decorators, typename T>
119   void write_ref_field_post(T* field, oop newVal);
120 
121   void write_ref_array(HeapWord* start, size_t count);
122 
123 private:
124   template <class T>
125   inline void arraycopy_marking(T* src, T* dst, size_t count);
126   template <class T>
127   inline void arraycopy_evacuation(T* src, size_t count);
128   template <class T>
129   inline void arraycopy_update(T* src, size_t count);
130 
131   inline void clone_marking(oop src);
132   inline void clone_evacuation(oop src);
133   inline void clone_update(oop src);
134 
135   template <class T, bool HAS_FWD, bool EVAC, bool ENQUEUE>
136   inline void arraycopy_work(T* src, size_t count);
137 
138   inline bool need_bulk_update(HeapWord* dst);
139 public:
140   // Callbacks for runtime accesses.
141   template <DecoratorSet decorators, typename BarrierSetT = ShenandoahBarrierSet>
142   class AccessBarrier: public BarrierSet::AccessBarrier<decorators, BarrierSetT> {
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