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src/hotspot/share/gc/g1/g1FullGCPrepareTask.hpp

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 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_G1_G1FULLGCPREPARETASK_HPP
 26 #define SHARE_GC_G1_G1FULLGCPREPARETASK_HPP
 27 
 28 #include "gc/g1/g1FullGCTask.hpp"
 29 #include "gc/g1/heapRegion.hpp"
 30 #include "memory/allocation.hpp"
 31 
 32 class G1CollectedHeap;
 33 class G1CMBitMap;
 34 class G1FullCollector;

 35 class G1FullGCCompactionPoint;
 36 class HeapRegion;
 37 
 38 // Determines the regions in the heap that should be part of the compaction and
 39 // distributes them among the compaction queues in round-robin fashion.
 40 class G1DetermineCompactionQueueClosure : public HeapRegionClosure {
 41   G1CollectedHeap* _g1h;
 42   G1FullCollector* _collector;
 43   uint _cur_worker;
 44 
 45   template<bool is_humongous>
 46   inline void free_pinned_region(HeapRegion* hr);
 47 
 48   inline bool should_compact(HeapRegion* hr) const;
 49 
 50   // Returns the current worker id to assign a compaction point to, and selects
 51   // the next one round-robin style.
 52   inline uint next_worker();
 53 
 54   inline G1FullGCCompactionPoint* next_compaction_point();

 91   };
 92 
 93   class G1ResetMetadataClosure : public HeapRegionClosure {
 94     G1CollectedHeap* _g1h;
 95     G1FullCollector* _collector;
 96 
 97     void reset_region_metadata(HeapRegion* hr);
 98     // Scrub all runs of dead objects within the given region by putting filler
 99     // objects and updating the corresponding BOT. If update_bot_for_live is true,
100     // also update the BOT for live objects.
101     void scrub_skip_compacting_region(HeapRegion* hr, bool update_bot_for_live);
102 
103   public:
104     G1ResetMetadataClosure(G1FullCollector* collector);
105 
106     bool do_heap_region(HeapRegion* hr);
107   };
108 
109   class G1PrepareCompactLiveClosure : public StackObj {
110     G1FullGCCompactionPoint* _cp;

111 
112   public:
113     G1PrepareCompactLiveClosure(G1FullGCCompactionPoint* cp);
114     size_t apply(oop object);
115   };
116 };
117 
118 // Closure to re-prepare objects in the serial compaction point queue regions for
119 // serial compaction.
120 class G1SerialRePrepareClosure : public StackObj {
121   G1FullGCCompactionPoint* _cp;
122   HeapRegion* _current;
123 
124 public:
125   G1SerialRePrepareClosure(G1FullGCCompactionPoint* hrcp, HeapRegion* hr) :
126     _cp(hrcp),
127     _current(hr) { }
128 
129   inline size_t apply(oop obj);
130 };
131 
132 #endif // SHARE_GC_G1_G1FULLGCPREPARETASK_HPP

 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_G1_G1FULLGCPREPARETASK_HPP
 26 #define SHARE_GC_G1_G1FULLGCPREPARETASK_HPP
 27 
 28 #include "gc/g1/g1FullGCTask.hpp"
 29 #include "gc/g1/heapRegion.hpp"
 30 #include "memory/allocation.hpp"
 31 
 32 class G1CollectedHeap;
 33 class G1CMBitMap;
 34 class G1FullCollector;
 35 class SlidingForwarding;
 36 class G1FullGCCompactionPoint;
 37 class HeapRegion;
 38 
 39 // Determines the regions in the heap that should be part of the compaction and
 40 // distributes them among the compaction queues in round-robin fashion.
 41 class G1DetermineCompactionQueueClosure : public HeapRegionClosure {
 42   G1CollectedHeap* _g1h;
 43   G1FullCollector* _collector;
 44   uint _cur_worker;
 45 
 46   template<bool is_humongous>
 47   inline void free_pinned_region(HeapRegion* hr);
 48 
 49   inline bool should_compact(HeapRegion* hr) const;
 50 
 51   // Returns the current worker id to assign a compaction point to, and selects
 52   // the next one round-robin style.
 53   inline uint next_worker();
 54 
 55   inline G1FullGCCompactionPoint* next_compaction_point();

 92   };
 93 
 94   class G1ResetMetadataClosure : public HeapRegionClosure {
 95     G1CollectedHeap* _g1h;
 96     G1FullCollector* _collector;
 97 
 98     void reset_region_metadata(HeapRegion* hr);
 99     // Scrub all runs of dead objects within the given region by putting filler
100     // objects and updating the corresponding BOT. If update_bot_for_live is true,
101     // also update the BOT for live objects.
102     void scrub_skip_compacting_region(HeapRegion* hr, bool update_bot_for_live);
103 
104   public:
105     G1ResetMetadataClosure(G1FullCollector* collector);
106 
107     bool do_heap_region(HeapRegion* hr);
108   };
109 
110   class G1PrepareCompactLiveClosure : public StackObj {
111     G1FullGCCompactionPoint* _cp;
112     SlidingForwarding* const _forwarding;
113 
114   public:
115     G1PrepareCompactLiveClosure(G1FullGCCompactionPoint* cp);
116     size_t apply(oop object);
117   };
118 };
119 
120 // Closure to re-prepare objects in the serial compaction point queue regions for
121 // serial compaction.
122 //class G1SerialRePrepareClosure : public StackObj {
123 //  G1FullGCCompactionPoint* _cp;
124 //  HeapRegion* _current;
125 //
126 //public:
127 //  G1SerialRePrepareClosure(G1FullGCCompactionPoint* hrcp, HeapRegion* hr) :
128 //    _cp(hrcp),
129 //    _current(hr) { }
130 //
131 //  inline size_t apply(oop obj);
132 //};
133 
134 #endif // SHARE_GC_G1_G1FULLGCPREPARETASK_HPP
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