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hotspot/src/share/vm/gc_implementation/g1/g1OopClosures.hpp
changeset 13728 882756847a04
parent 13336 e582172ff6ff
child 20282 7f9cbdf89af2
equal deleted inserted replaced
13727:caf5eb7dd4a7 13728:882756847a04 
   116   template <class T> void do_oop_nv(T* p);
 
   116   template <class T> void do_oop_nv(T* p);
 
   117   virtual void do_oop(oop* p)       { do_oop_nv(p); }
 
   117   virtual void do_oop(oop* p)       { do_oop_nv(p); }
 
   118   virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
 
   118   virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
 
   119 };
 
   119 };
 
   120 
   120 
       
   121 // Add back base class for metadata
 
       
   122 class G1ParCopyHelper : public G1ParClosureSuper {
 
       
   123   Klass* _scanned_klass;
 
       
   124 
       
   125  public:
 
       
   126   G1ParCopyHelper(G1CollectedHeap* g1,  G1ParScanThreadState* par_scan_state) :
 
       
   127       _scanned_klass(NULL),
 
       
   128       G1ParClosureSuper(g1, par_scan_state) {}
 
       
   129 
       
   130   void set_scanned_klass(Klass* k) { _scanned_klass = k; }
 
       
   131   template <class T> void do_klass_barrier(T* p, oop new_obj);
 
       
   132 };
 
       
   133 
   121 template <bool do_gen_barrier, G1Barrier barrier, bool do_mark_object>
 
   134 template <bool do_gen_barrier, G1Barrier barrier, bool do_mark_object>
 
   122 class G1ParCopyClosure : public G1ParClosureSuper {
 
   135 class G1ParCopyClosure : public G1ParCopyHelper {
 
   123   G1ParScanClosure _scanner;
 
   136   G1ParScanClosure _scanner;
 
   124   template <class T> void do_oop_work(T* p);
 
   137   template <class T> void do_oop_work(T* p);
 
   125 
   138 
   126 protected:
 
   139 protected:
 
   127   // Mark the object if it's not already marked. This is used to mark
 
   140   // Mark the object if it's not already marked. This is used to mark
 
   138 
   151 
   139 public:
 
   152 public:
 
   140   G1ParCopyClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state,
 
   153   G1ParCopyClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state,
 
   141                    ReferenceProcessor* rp) :
 
   154                    ReferenceProcessor* rp) :
 
   142       _scanner(g1, par_scan_state, rp),
 
   155       _scanner(g1, par_scan_state, rp),
 
   143       G1ParClosureSuper(g1, par_scan_state) {
 
   156       G1ParCopyHelper(g1, par_scan_state) {
 
   144     assert(_ref_processor == NULL, "sanity");
 
   157     assert(_ref_processor == NULL, "sanity");
 
   145   }
 
   158   }
 
   146 
   159 
   147   G1ParScanClosure* scanner() { return &_scanner; }
 
   160   G1ParScanClosure* scanner() { return &_scanner; }
 
   148 
   161 
   152   virtual void do_oop(oop* p)       { do_oop_nv(p); }
 
   165   virtual void do_oop(oop* p)       { do_oop_nv(p); }
 
   153   virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
 
   166   virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
 
   154 };
 
   167 };
 
   155 
   168 
   156 typedef G1ParCopyClosure<false, G1BarrierNone, false> G1ParScanExtRootClosure;
 
   169 typedef G1ParCopyClosure<false, G1BarrierNone, false> G1ParScanExtRootClosure;
 
   157 typedef G1ParCopyClosure<true,  G1BarrierNone, false> G1ParScanPermClosure;
 
   170 typedef G1ParCopyClosure<false, G1BarrierKlass, false> G1ParScanMetadataClosure;
 
       
   171 
   158 
   172 
   159 typedef G1ParCopyClosure<false, G1BarrierNone, true> G1ParScanAndMarkExtRootClosure;
 
   173 typedef G1ParCopyClosure<false, G1BarrierNone, true> G1ParScanAndMarkExtRootClosure;
 
   160 typedef G1ParCopyClosure<true,  G1BarrierNone, true> G1ParScanAndMarkPermClosure;
 
   174 typedef G1ParCopyClosure<true,  G1BarrierNone, true> G1ParScanAndMarkClosure;
 
       
   175 typedef G1ParCopyClosure<false, G1BarrierKlass, true> G1ParScanAndMarkMetadataClosure;
 
   161 
   176 
   162 // The following closure types are no longer used but are retained
 
   177 // The following closure types are no longer used but are retained
 
   163 // for historical reasons:
 
   178 // for historical reasons:
 
   164 // typedef G1ParCopyClosure<false, G1BarrierRS,   false> G1ParScanHeapRSClosure;
 
   179 // typedef G1ParCopyClosure<false, G1BarrierRS,   false> G1ParScanHeapRSClosure;
 
   165 // typedef G1ParCopyClosure<false, G1BarrierRS,   true> G1ParScanAndMarkHeapRSClosure;
 
   180 // typedef G1ParCopyClosure<false, G1BarrierRS,   true> G1ParScanAndMarkHeapRSClosure;
 
   174 // (since that closure no longer assumes that the references it
 
   189 // (since that closure no longer assumes that the references it
 
   175 // handles point into the collection set).
 
   190 // handles point into the collection set).
 
   176 
   191 
   177 typedef G1ParCopyClosure<false, G1BarrierEvac, false> G1ParScanHeapEvacFailureClosure;
 
   192 typedef G1ParCopyClosure<false, G1BarrierEvac, false> G1ParScanHeapEvacFailureClosure;
 
   178 
   193 
   179 class FilterIntoCSClosure: public OopClosure {
 
   194 class FilterIntoCSClosure: public ExtendedOopClosure {
 
   180   G1CollectedHeap* _g1;
 
   195   G1CollectedHeap* _g1;
 
   181   OopClosure* _oc;
 
   196   OopClosure* _oc;
 
   182   DirtyCardToOopClosure* _dcto_cl;
 
   197   DirtyCardToOopClosure* _dcto_cl;
 
   183 public:
 
   198 public:
 
   184   FilterIntoCSClosure(  DirtyCardToOopClosure* dcto_cl,
 
   199   FilterIntoCSClosure(  DirtyCardToOopClosure* dcto_cl,
 
   188 
   203 
   189   template <class T> void do_oop_nv(T* p);
 
   204   template <class T> void do_oop_nv(T* p);
 
   190   virtual void do_oop(oop* p)        { do_oop_nv(p); }
 
   205   virtual void do_oop(oop* p)        { do_oop_nv(p); }
 
   191   virtual void do_oop(narrowOop* p)  { do_oop_nv(p); }
 
   206   virtual void do_oop(narrowOop* p)  { do_oop_nv(p); }
 
   192   bool apply_to_weak_ref_discovered_field() { return true; }
 
   207   bool apply_to_weak_ref_discovered_field() { return true; }
 
   193   bool do_header() { return false; }
 
   208 };
 
   194 };
 
   209 
   195 
   210 class FilterOutOfRegionClosure: public ExtendedOopClosure {
 
   196 class FilterOutOfRegionClosure: public OopClosure {
 
       
   197   HeapWord* _r_bottom;
 
   211   HeapWord* _r_bottom;
 
   198   HeapWord* _r_end;
 
   212   HeapWord* _r_end;
 
   199   OopClosure* _oc;
 
   213   OopClosure* _oc;
 
   200 public:
 
   214 public:
 
   201   FilterOutOfRegionClosure(HeapRegion* r, OopClosure* oc);
 
   215   FilterOutOfRegionClosure(HeapRegion* r, OopClosure* oc);
 
   202   template <class T> void do_oop_nv(T* p);
 
   216   template <class T> void do_oop_nv(T* p);
 
   203   virtual void do_oop(oop* p) { do_oop_nv(p); }
 
   217   virtual void do_oop(oop* p) { do_oop_nv(p); }
 
   204   virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
 
   218   virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
 
   205   bool apply_to_weak_ref_discovered_field() { return true; }
 
   219   bool apply_to_weak_ref_discovered_field() { return true; }
 
   206   bool do_header() { return false; }
 
       
   207 };
 
   220 };
 
   208 
   221 
   209 // Closure for iterating over object fields during concurrent marking
 
   222 // Closure for iterating over object fields during concurrent marking
 
   210 class G1CMOopClosure : public OopClosure {
 
   223 class G1CMOopClosure : public ExtendedOopClosure {
 
   211 private:
 
   224 private:
 
   212   G1CollectedHeap*   _g1h;
 
   225   G1CollectedHeap*   _g1h;
 
   213   ConcurrentMark*    _cm;
 
   226   ConcurrentMark*    _cm;
 
   214   CMTask*            _task;
 
   227   CMTask*            _task;
 
   215 public:
 
   228 public:
 
   218   virtual void do_oop(      oop* p) { do_oop_nv(p); }
 
   231   virtual void do_oop(      oop* p) { do_oop_nv(p); }
 
   219   virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
 
   232   virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
 
   220 };
 
   233 };
 
   221 
   234 
   222 // Closure to scan the root regions during concurrent marking
 
   235 // Closure to scan the root regions during concurrent marking
 
   223 class G1RootRegionScanClosure : public OopClosure {
 
   236 class G1RootRegionScanClosure : public ExtendedOopClosure {
 
   224 private:
 
   237 private:
 
   225   G1CollectedHeap* _g1h;
 
   238   G1CollectedHeap* _g1h;
 
   226   ConcurrentMark*  _cm;
 
   239   ConcurrentMark*  _cm;
 
   227   uint _worker_id;
 
   240   uint _worker_id;
 
   228 public:
 
   241 public:
 
   237 // Closure that applies the given two closures in sequence.
 
   250 // Closure that applies the given two closures in sequence.
 
   238 // Used by the RSet refinement code (when updating RSets
 
   251 // Used by the RSet refinement code (when updating RSets
 
   239 // during an evacuation pause) to record cards containing
 
   252 // during an evacuation pause) to record cards containing
 
   240 // pointers into the collection set.
 
   253 // pointers into the collection set.
 
   241 
   254 
   242 class G1Mux2Closure : public OopClosure {
 
   255 class G1Mux2Closure : public ExtendedOopClosure {
 
   243   OopClosure* _c1;
 
   256   OopClosure* _c1;
 
   244   OopClosure* _c2;
 
   257   OopClosure* _c2;
 
   245 public:
 
   258 public:
 
   246   G1Mux2Closure(OopClosure *c1, OopClosure *c2);
 
   259   G1Mux2Closure(OopClosure *c1, OopClosure *c2);
 
   247   template <class T> void do_oop_nv(T* p);
 
   260   template <class T> void do_oop_nv(T* p);
 
   250 };
 
   263 };
 
   251 
   264 
   252 // A closure that returns true if it is actually applied
 
   265 // A closure that returns true if it is actually applied
 
   253 // to a reference
 
   266 // to a reference
 
   254 
   267 
   255 class G1TriggerClosure : public OopClosure {
 
   268 class G1TriggerClosure : public ExtendedOopClosure {
 
   256   bool _triggered;
 
   269   bool _triggered;
 
   257 public:
 
   270 public:
 
   258   G1TriggerClosure();
 
   271   G1TriggerClosure();
 
   259   bool triggered() const { return _triggered; }
 
   272   bool triggered() const { return _triggered; }
 
   260   template <class T> void do_oop_nv(T* p);
 
   273   template <class T> void do_oop_nv(T* p);
 
   263 };
 
   276 };
 
   264 
   277 
   265 // A closure which uses a triggering closure to determine
 
   278 // A closure which uses a triggering closure to determine
 
   266 // whether to apply an oop closure.
 
   279 // whether to apply an oop closure.
 
   267 
   280 
   268 class G1InvokeIfNotTriggeredClosure: public OopClosure {
 
   281 class G1InvokeIfNotTriggeredClosure: public ExtendedOopClosure {
 
   269   G1TriggerClosure* _trigger_cl;
 
   282   G1TriggerClosure* _trigger_cl;
 
   270   OopClosure* _oop_cl;
 
   283   OopClosure* _oop_cl;
 
   271 public:
 
   284 public:
 
   272   G1InvokeIfNotTriggeredClosure(G1TriggerClosure* t, OopClosure* oc);
 
   285   G1InvokeIfNotTriggeredClosure(G1TriggerClosure* t, OopClosure* oc);
 
   273   template <class T> void do_oop_nv(T* p);
 
   286   template <class T> void do_oop_nv(T* p);
 
   274   virtual void do_oop(oop* p)        { do_oop_nv(p); }
 
   287   virtual void do_oop(oop* p)        { do_oop_nv(p); }
 
   275   virtual void do_oop(narrowOop* p)  { do_oop_nv(p); }
 
   288   virtual void do_oop(narrowOop* p)  { do_oop_nv(p); }
 
   276 };
 
   289 };
 
   277 
   290 
   278 class G1UpdateRSOrPushRefOopClosure: public OopClosure {
 
   291 class G1UpdateRSOrPushRefOopClosure: public ExtendedOopClosure {
 
   279   G1CollectedHeap* _g1;
 
   292   G1CollectedHeap* _g1;
 
   280   G1RemSet* _g1_rem_set;
 
   293   G1RemSet* _g1_rem_set;
 
   281   HeapRegion* _from;
 
   294   HeapRegion* _from;
 
   282   OopsInHeapRegionClosure* _push_ref_cl;
 
   295   OopsInHeapRegionClosure* _push_ref_cl;
 
   283   bool _record_refs_into_cset;
 
   296   bool _record_refs_into_cset;
jdk-sandbox