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

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rev 6670 : fast reclaim main patch


  27 
  28 #include "gc_implementation/g1/concurrentMark.inline.hpp"
  29 #include "gc_implementation/g1/g1CollectedHeap.hpp"
  30 #include "gc_implementation/g1/g1OopClosures.hpp"
  31 #include "gc_implementation/g1/g1ParScanThreadState.inline.hpp"
  32 #include "gc_implementation/g1/g1RemSet.hpp"
  33 #include "gc_implementation/g1/g1RemSet.inline.hpp"
  34 #include "gc_implementation/g1/heapRegionRemSet.hpp"
  35 #include "memory/iterator.inline.hpp"
  36 #include "runtime/prefetch.inline.hpp"
  37 
  38 /*
  39  * This really ought to be an inline function, but apparently the C++
  40  * compiler sometimes sees fit to ignore inline declarations.  Sigh.
  41  */
  42 
  43 template <class T>
  44 inline void FilterIntoCSClosure::do_oop_nv(T* p) {
  45   T heap_oop = oopDesc::load_heap_oop(p);
  46   if (!oopDesc::is_null(heap_oop) &&
  47       _g1->obj_in_cs(oopDesc::decode_heap_oop_not_null(heap_oop))) {
  48     _oc->do_oop(p);
  49   }
  50 }
  51 
  52 template <class T>
  53 inline void FilterOutOfRegionClosure::do_oop_nv(T* p) {
  54   T heap_oop = oopDesc::load_heap_oop(p);
  55   if (!oopDesc::is_null(heap_oop)) {
  56     HeapWord* obj_hw = (HeapWord*)oopDesc::decode_heap_oop_not_null(heap_oop);
  57     if (obj_hw < _r_bottom || obj_hw >= _r_end) {
  58       _oc->do_oop(p);
  59     }
  60   }
  61 }
  62 
  63 // This closure is applied to the fields of the objects that have just been copied.
  64 template <class T>
  65 inline void G1ParScanClosure::do_oop_nv(T* p) {
  66   T heap_oop = oopDesc::load_heap_oop(p);
  67 
  68   if (!oopDesc::is_null(heap_oop)) {
  69     oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
  70     if (_g1->in_cset_fast_test(obj)) {
  71       // We're not going to even bother checking whether the object is
  72       // already forwarded or not, as this usually causes an immediate
  73       // stall. We'll try to prefetch the object (for write, given that
  74       // we might need to install the forwarding reference) and we'll
  75       // get back to it when pop it from the queue
  76       Prefetch::write(obj->mark_addr(), 0);
  77       Prefetch::read(obj->mark_addr(), (HeapWordSize*2));
  78 
  79       // slightly paranoid test; I'm trying to catch potential
  80       // problems before we go into push_on_queue to know where the
  81       // problem is coming from
  82       assert((obj == oopDesc::load_decode_heap_oop(p)) ||
  83              (obj->is_forwarded() &&
  84                  obj->forwardee() == oopDesc::load_decode_heap_oop(p)),
  85              "p should still be pointing to obj or to its forwardee");
  86 
  87       _par_scan_state->push_on_queue(p);
  88     } else {
  89       _par_scan_state->update_rs(_from, p, _worker_id);
  90     }
  91   }
  92 }
  93 
  94 template <class T>
  95 inline void G1ParPushHeapRSClosure::do_oop_nv(T* p) {
  96   T heap_oop = oopDesc::load_heap_oop(p);
  97 
  98   if (!oopDesc::is_null(heap_oop)) {
  99     oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
 100     if (_g1->in_cset_fast_test(obj)) {
 101       Prefetch::write(obj->mark_addr(), 0);
 102       Prefetch::read(obj->mark_addr(), (HeapWordSize*2));
 103 
 104       // Place on the references queue
 105       _par_scan_state->push_on_queue(p);


 106     }
 107   }
 108 }
 109 
 110 template <class T>
 111 inline void G1CMOopClosure::do_oop_nv(T* p) {
 112   oop obj = oopDesc::load_decode_heap_oop(p);
 113   if (_cm->verbose_high()) {
 114     gclog_or_tty->print_cr("[%u] we're looking at location "
 115                            "*"PTR_FORMAT" = "PTR_FORMAT,
 116                            _task->worker_id(), p2i(p), p2i((void*) obj));
 117   }
 118   _task->deal_with_reference(obj);
 119 }
 120 
 121 template <class T>
 122 inline void G1RootRegionScanClosure::do_oop_nv(T* p) {
 123   T heap_oop = oopDesc::load_heap_oop(p);
 124   if (!oopDesc::is_null(heap_oop)) {
 125     oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);




  27 
  28 #include "gc_implementation/g1/concurrentMark.inline.hpp"
  29 #include "gc_implementation/g1/g1CollectedHeap.hpp"
  30 #include "gc_implementation/g1/g1OopClosures.hpp"
  31 #include "gc_implementation/g1/g1ParScanThreadState.inline.hpp"
  32 #include "gc_implementation/g1/g1RemSet.hpp"
  33 #include "gc_implementation/g1/g1RemSet.inline.hpp"
  34 #include "gc_implementation/g1/heapRegionRemSet.hpp"
  35 #include "memory/iterator.inline.hpp"
  36 #include "runtime/prefetch.inline.hpp"
  37 
  38 /*
  39  * This really ought to be an inline function, but apparently the C++
  40  * compiler sometimes sees fit to ignore inline declarations.  Sigh.
  41  */
  42 
  43 template <class T>
  44 inline void FilterIntoCSClosure::do_oop_nv(T* p) {
  45   T heap_oop = oopDesc::load_heap_oop(p);
  46   if (!oopDesc::is_null(heap_oop) &&
  47       _g1->is_in_cset_or_humongous(oopDesc::decode_heap_oop_not_null(heap_oop))) {
  48     _oc->do_oop(p);
  49   }
  50 }
  51 
  52 template <class T>
  53 inline void FilterOutOfRegionClosure::do_oop_nv(T* p) {
  54   T heap_oop = oopDesc::load_heap_oop(p);
  55   if (!oopDesc::is_null(heap_oop)) {
  56     HeapWord* obj_hw = (HeapWord*)oopDesc::decode_heap_oop_not_null(heap_oop);
  57     if (obj_hw < _r_bottom || obj_hw >= _r_end) {
  58       _oc->do_oop(p);
  59     }
  60   }
  61 }
  62 
  63 // This closure is applied to the fields of the objects that have just been copied.
  64 template <class T>
  65 inline void G1ParScanClosure::do_oop_nv(T* p) {
  66   T heap_oop = oopDesc::load_heap_oop(p);
  67 
  68   if (!oopDesc::is_null(heap_oop)) {
  69     oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
  70     if (_g1->is_in_cset_or_humongous(obj)) {
  71       // We're not going to even bother checking whether the object is
  72       // already forwarded or not, as this usually causes an immediate
  73       // stall. We'll try to prefetch the object (for write, given that
  74       // we might need to install the forwarding reference) and we'll
  75       // get back to it when pop it from the queue
  76       Prefetch::write(obj->mark_addr(), 0);
  77       Prefetch::read(obj->mark_addr(), (HeapWordSize*2));
  78 
  79       // slightly paranoid test; I'm trying to catch potential
  80       // problems before we go into push_on_queue to know where the
  81       // problem is coming from
  82       assert((obj == oopDesc::load_decode_heap_oop(p)) ||
  83              (obj->is_forwarded() &&
  84                  obj->forwardee() == oopDesc::load_decode_heap_oop(p)),
  85              "p should still be pointing to obj or to its forwardee");
  86 
  87       _par_scan_state->push_on_queue(p);
  88     } else {
  89       _par_scan_state->update_rs(_from, p, _worker_id);
  90     }
  91   }
  92 }
  93 
  94 template <class T>
  95 inline void G1ParPushHeapRSClosure::do_oop_nv(T* p) {
  96   T heap_oop = oopDesc::load_heap_oop(p);
  97 
  98   if (!oopDesc::is_null(heap_oop)) {
  99     oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
 100     if (_g1->is_in_cset_or_humongous(obj)) {
 101       Prefetch::write(obj->mark_addr(), 0);
 102       Prefetch::read(obj->mark_addr(), (HeapWordSize*2));
 103 
 104       // Place on the references queue
 105       _par_scan_state->push_on_queue(p);
 106     } else {
 107       assert(!_g1->obj_in_cs(obj), "checking");
 108     }
 109   }
 110 }
 111 
 112 template <class T>
 113 inline void G1CMOopClosure::do_oop_nv(T* p) {
 114   oop obj = oopDesc::load_decode_heap_oop(p);
 115   if (_cm->verbose_high()) {
 116     gclog_or_tty->print_cr("[%u] we're looking at location "
 117                            "*"PTR_FORMAT" = "PTR_FORMAT,
 118                            _task->worker_id(), p2i(p), p2i((void*) obj));
 119   }
 120   _task->deal_with_reference(obj);
 121 }
 122 
 123 template <class T>
 124 inline void G1RootRegionScanClosure::do_oop_nv(T* p) {
 125   T heap_oop = oopDesc::load_heap_oop(p);
 126   if (!oopDesc::is_null(heap_oop)) {
 127     oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);