jdk8-mips64-public/hotspot: src/share/vm/gc_implementation/g1/g1OopClosures.hpp@29e7d79232b9 (annotated)

src/share/vm/gc_implementation/g1/g1OopClosures.hpp@29e7d79232b9 (annotated)

src/share/vm/gc_implementation/g1/g1OopClosures.hpp

Tue, 19 May 2009 04:05:31 -0700

author: apetrusenko
date: Tue, 19 May 2009 04:05:31 -0700
changeset 1231: 29e7d79232b9
parent 1014: 0fbdb4381b99
child 1280: df6caf649ff7
permissions: -rw-r--r--

6819065: G1: eliminate high serial card table clearing time
Reviewed-by: iveresov, tonyp

 /*
  * Copyright 2001-2009 Sun Microsystems, Inc.  All Rights Reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  * CA 95054 USA or visit www.sun.com if you need additional information or
  * have any questions.
  *
  */
 class HeapRegion;
 class G1CollectedHeap;
 class G1RemSet;
 class HRInto_G1RemSet;
 class G1RemSet;
 class ConcurrentMark;
 class DirtyCardToOopClosure;
 class CMBitMap;
 class CMMarkStack;
 class G1ParScanThreadState;
 // A class that scans oops in a given heap region (much as OopsInGenClosure
 // scans oops in a generation.)
 class OopsInHeapRegionClosure: public OopsInGenClosure {
 protected:
   HeapRegion* _from;
 public:
   virtual void set_region(HeapRegion* from) { _from = from; }
 };
 class G1ScanAndBalanceClosure : public OopClosure {
   G1CollectedHeap* _g1;
   static int _nq;
 public:
   G1ScanAndBalanceClosure(G1CollectedHeap* g1) : _g1(g1) { }
   inline  void do_oop_nv(oop* p);
   inline  void do_oop_nv(narrowOop* p) { guarantee(false, "NYI"); }
   virtual void do_oop(oop* p);
   virtual void do_oop(narrowOop* p)    { guarantee(false, "NYI"); }
 };
 class G1ParClosureSuper : public OopsInHeapRegionClosure {
 protected:
   G1CollectedHeap* _g1;
   G1RemSet* _g1_rem;
   ConcurrentMark* _cm;
   G1ParScanThreadState* _par_scan_state;
 public:
   G1ParClosureSuper(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state);
   bool apply_to_weak_ref_discovered_field() { return true; }
 };
 class G1ParScanClosure : public G1ParClosureSuper {
 public:
   G1ParScanClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state) :
     G1ParClosureSuper(g1, par_scan_state) { }
   void do_oop_nv(oop* p);   // should be made inline
   inline  void do_oop_nv(narrowOop* p) { guarantee(false, "NYI"); }
   virtual void do_oop(oop* p)          { do_oop_nv(p); }
   virtual void do_oop(narrowOop* p)    { do_oop_nv(p); }
 };
 #define G1_PARTIAL_ARRAY_MASK 1
 inline bool has_partial_array_mask(oop* ref) {
   return (intptr_t) ref & G1_PARTIAL_ARRAY_MASK;
 }
 inline oop* set_partial_array_mask(oop obj) {
   return (oop*) ((intptr_t) obj | G1_PARTIAL_ARRAY_MASK);
 }
 inline oop clear_partial_array_mask(oop* ref) {
   return oop((intptr_t) ref & ~G1_PARTIAL_ARRAY_MASK);
 }
 class G1ParScanPartialArrayClosure : public G1ParClosureSuper {
   G1ParScanClosure _scanner;
   template <class T> void process_array_chunk(oop obj, int start, int end);
 public:
   G1ParScanPartialArrayClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state) :
     G1ParClosureSuper(g1, par_scan_state), _scanner(g1, par_scan_state) { }
   void do_oop_nv(oop* p);
   void do_oop_nv(narrowOop* p)      { guarantee(false, "NYI"); }
   virtual void do_oop(oop* p)       { do_oop_nv(p); }
   virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
 };
 class G1ParCopyHelper : public G1ParClosureSuper {
   G1ParScanClosure *_scanner;
 protected:
   void mark_forwardee(oop* p);
   oop copy_to_survivor_space(oop obj);
 public:
   G1ParCopyHelper(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state,
                   G1ParScanClosure *scanner) :
     G1ParClosureSuper(g1, par_scan_state), _scanner(scanner) { }
 };
 template<bool do_gen_barrier, G1Barrier barrier,
          bool do_mark_forwardee, bool skip_cset_test>
 class G1ParCopyClosure : public G1ParCopyHelper {
   G1ParScanClosure _scanner;
   void do_oop_work(oop* p);
   void do_oop_work(narrowOop* p) { guarantee(false, "NYI"); }
 public:
   G1ParCopyClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state) :
     _scanner(g1, par_scan_state), G1ParCopyHelper(g1, par_scan_state, &_scanner) { }
   inline void do_oop_nv(oop* p) {
     do_oop_work(p);
     if (do_mark_forwardee)
       mark_forwardee(p);
   }
   inline void do_oop_nv(narrowOop* p) { guarantee(false, "NYI"); }
   virtual void do_oop(oop* p)       { do_oop_nv(p); }
   virtual void do_oop(narrowOop* p) { do_oop_nv(p); }
 };
 typedef G1ParCopyClosure<false, G1BarrierNone, false, false> G1ParScanExtRootClosure;
 typedef G1ParCopyClosure<true,  G1BarrierNone, false, false> G1ParScanPermClosure;
 typedef G1ParCopyClosure<false, G1BarrierNone, true,  false> G1ParScanAndMarkExtRootClosure;
 typedef G1ParCopyClosure<true,  G1BarrierNone, true,  false> G1ParScanAndMarkPermClosure;
 typedef G1ParCopyClosure<false, G1BarrierRS,   false, false> G1ParScanHeapRSClosure;
 typedef G1ParCopyClosure<false, G1BarrierRS,   true,  false> G1ParScanAndMarkHeapRSClosure;
 // This is the only case when we set skip_cset_test. Basically, this
 // closure is (should?) only be called directly while we're draining
 // the overflow and task queues. In that case we know that the
 // reference in question points into the collection set, otherwise we
 // would not have pushed it on the queue.
 typedef G1ParCopyClosure<false, G1BarrierEvac, false, true> G1ParScanHeapEvacClosure;
 // We need a separate closure to handle references during evacuation
 // failure processing, as it cannot asume that the reference already
  // points to the collection set (like G1ParScanHeapEvacClosure does).
 typedef G1ParCopyClosure<false, G1BarrierEvac, false, false> G1ParScanHeapEvacFailureClosure;
 class FilterIntoCSClosure: public OopClosure {
   G1CollectedHeap* _g1;
   OopClosure* _oc;
   DirtyCardToOopClosure* _dcto_cl;
 public:
   FilterIntoCSClosure(  DirtyCardToOopClosure* dcto_cl,
                         G1CollectedHeap* g1, OopClosure* oc) :
     _dcto_cl(dcto_cl), _g1(g1), _oc(oc)
   {}
   inline void do_oop_nv(oop* p);
   inline void do_oop_nv(narrowOop* p) { guarantee(false, "NYI"); }
   virtual void do_oop(oop* p);
   virtual void do_oop(narrowOop* p)   { guarantee(false, "NYI"); }
   bool apply_to_weak_ref_discovered_field() { return true; }
   bool do_header() { return false; }
 };
 class FilterInHeapRegionAndIntoCSClosure : public OopsInHeapRegionClosure {
   G1CollectedHeap* _g1;
   OopsInHeapRegionClosure* _oc;
 public:
   FilterInHeapRegionAndIntoCSClosure(G1CollectedHeap* g1,
                                      OopsInHeapRegionClosure* oc) :
     _g1(g1), _oc(oc)
   {}
   inline  void do_oop_nv(oop* p);
   inline  void do_oop_nv(narrowOop* p) { guarantee(false, "NYI"); }
   virtual void do_oop(oop* p);
   virtual void do_oop(narrowOop* p)    { guarantee(false, "NYI"); }
   bool apply_to_weak_ref_discovered_field() { return true; }
   bool do_header() { return false; }
   void set_region(HeapRegion* from) {
     _oc->set_region(from);
   }
 };
 class FilterAndMarkInHeapRegionAndIntoCSClosure : public OopsInHeapRegionClosure {
   G1CollectedHeap* _g1;
   ConcurrentMark* _cm;
   OopsInHeapRegionClosure* _oc;
 public:
   FilterAndMarkInHeapRegionAndIntoCSClosure(G1CollectedHeap* g1,
                                             OopsInHeapRegionClosure* oc,
                                             ConcurrentMark* cm)
   : _g1(g1), _oc(oc), _cm(cm) { }
   inline  void do_oop_nv(oop* p);
   inline  void do_oop_nv(narrowOop* p) { guarantee(false, "NYI"); }
   virtual void do_oop(oop* p);
   virtual void do_oop(narrowOop* p)    { guarantee(false, "NYI"); }
   bool apply_to_weak_ref_discovered_field() { return true; }
   bool do_header() { return false; }
   void set_region(HeapRegion* from) {
     _oc->set_region(from);
   }
 };
 class FilterOutOfRegionClosure: public OopClosure {
   HeapWord* _r_bottom;
   HeapWord* _r_end;
   OopClosure* _oc;
   int _out_of_region;
 public:
   FilterOutOfRegionClosure(HeapRegion* r, OopClosure* oc);
   inline  void do_oop_nv(oop* p);
   inline  void do_oop_nv(narrowOop* p) { guarantee(false, "NYI"); }
   virtual void do_oop(oop* p);
   virtual void do_oop(narrowOop* p)   { guarantee(false, "NYI"); }
   bool apply_to_weak_ref_discovered_field() { return true; }
   bool do_header() { return false; }
   int out_of_region() { return _out_of_region; }
 };

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/gc_implementation/g1/g1OopClosures.hpp@29e7d79232b9 (annotated)

src/share/vm/gc_implementation/g1/g1OopClosures.hpp