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

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  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_INLINE_HPP
  26 #define SHARE_GC_SHENANDOAH_SHENANDOAHBARRIERSET_INLINE_HPP
  27 
  28 #include "gc/shared/barrierSet.hpp"
  29 #include "gc/shenandoah/shenandoahAsserts.hpp"
  30 #include "gc/shenandoah/shenandoahBarrierSet.hpp"
  31 #include "gc/shenandoah/shenandoahCollectionSet.inline.hpp"
  32 #include "gc/shenandoah/shenandoahEvacOOMHandler.inline.hpp"
  33 #include "gc/shenandoah/shenandoahForwarding.inline.hpp"
  34 #include "gc/shenandoah/shenandoahHeap.inline.hpp"
  35 #include "gc/shenandoah/shenandoahHeapRegion.hpp"
  36 #include "gc/shenandoah/shenandoahMarkingContext.inline.hpp"
  37 #include "gc/shenandoah/shenandoahThreadLocalData.hpp"
  38 #include "memory/iterator.inline.hpp"
  39 #include "oops/oop.inline.hpp"
  40 
  41 inline oop ShenandoahBarrierSet::resolve_forwarded_not_null(oop p) {
  42   return ShenandoahForwarding::get_forwardee(p);
  43 }
  44 
  45 inline oop ShenandoahBarrierSet::resolve_forwarded(oop p) {
  46   if (p != NULL) {
  47     return resolve_forwarded_not_null(p);
  48   } else {
  49     return p;
  50   }
  51 }
  52 
  53 inline oop ShenandoahBarrierSet::resolve_forwarded_not_null_mutator(oop p) {
  54   return ShenandoahForwarding::get_forwardee_mutator(p);
  55 }
  56 
  57 template <class T>
  58 inline oop ShenandoahBarrierSet::load_reference_barrier_mutator(oop obj, T* load_addr) {
  59   assert(ShenandoahLoadRefBarrier, "should be enabled");
  60   shenandoah_assert_in_cset(load_addr, obj);
  61 
  62   oop fwd = resolve_forwarded_not_null_mutator(obj);
  63   if (obj == fwd) {
  64     assert(_heap->is_evacuation_in_progress(),
  65            "evac should be in progress");
  66     Thread* const t = Thread::current();
  67     ShenandoahEvacOOMScope scope(t);
  68     fwd = _heap->evacuate_object(obj, t);
  69   }
  70 
  71   if (load_addr != NULL && fwd != obj) {
  72     // Since we are here and we know the load address, update the reference.
  73     ShenandoahHeap::cas_oop(fwd, load_addr, obj);
  74   }
  75 
  76   return fwd;
  77 }
  78 
  79 inline void ShenandoahBarrierSet::enqueue(oop obj) {
  80   assert(_satb_mark_queue_set.is_active(), "only get here when SATB active");
  81 
  82   // Filter marked objects before hitting the SATB queues. The same predicate would
  83   // be used by SATBMQ::filter to eliminate already marked objects downstream, but
  84   // filtering here helps to avoid wasteful SATB queueing work to begin with.
  85   if (!_heap->requires_marking<false>(obj)) return;
  86 
  87   ShenandoahThreadLocalData::satb_mark_queue(Thread::current()).enqueue_known_active(obj);


 322   }
 323 }
 324 
 325 template <class T>
 326 void ShenandoahBarrierSet::arraycopy_marking(T* src, T* dst, size_t count) {
 327   assert(_heap->is_concurrent_mark_in_progress(), "only during marking");
 328   T* array = ShenandoahSATBBarrier ? dst : src;
 329   if (!_heap->marking_context()->allocated_after_mark_start(reinterpret_cast<HeapWord*>(array))) {
 330     arraycopy_work<T, false, false, true>(array, count);
 331   }
 332 }
 333 
 334 inline bool ShenandoahBarrierSet::need_bulk_update(HeapWord* ary) {
 335   return ary < _heap->heap_region_containing(ary)->get_update_watermark();
 336 }
 337 
 338 template <class T>
 339 void ShenandoahBarrierSet::arraycopy_evacuation(T* src, size_t count) {
 340   assert(_heap->is_evacuation_in_progress(), "only during evacuation");
 341   if (need_bulk_update(reinterpret_cast<HeapWord*>(src))) {
 342     ShenandoahEvacOOMScope oom_evac;
 343     arraycopy_work<T, true, true, false>(src, count);
 344   }
 345 }
 346 
 347 template <class T>
 348 void ShenandoahBarrierSet::arraycopy_update(T* src, size_t count) {
 349   assert(_heap->is_update_refs_in_progress(), "only during update-refs");
 350   if (need_bulk_update(reinterpret_cast<HeapWord*>(src))) {
 351     arraycopy_work<T, true, false, false>(src, count);
 352   }
 353 }
 354 
 355 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHBARRIERSET_INLINE_HPP


  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_INLINE_HPP
  26 #define SHARE_GC_SHENANDOAH_SHENANDOAHBARRIERSET_INLINE_HPP
  27 
  28 #include "gc/shared/barrierSet.hpp"
  29 #include "gc/shenandoah/shenandoahAsserts.hpp"
  30 #include "gc/shenandoah/shenandoahBarrierSet.hpp"
  31 #include "gc/shenandoah/shenandoahCollectionSet.inline.hpp"

  32 #include "gc/shenandoah/shenandoahForwarding.inline.hpp"
  33 #include "gc/shenandoah/shenandoahHeap.inline.hpp"
  34 #include "gc/shenandoah/shenandoahHeapRegion.hpp"
  35 #include "gc/shenandoah/shenandoahMarkingContext.inline.hpp"
  36 #include "gc/shenandoah/shenandoahThreadLocalData.hpp"
  37 #include "memory/iterator.inline.hpp"
  38 #include "oops/oop.inline.hpp"
  39 
  40 inline oop ShenandoahBarrierSet::resolve_forwarded_not_null(oop p) {
  41   return ShenandoahForwarding::get_forwardee(p);
  42 }
  43 
  44 inline oop ShenandoahBarrierSet::resolve_forwarded(oop p) {
  45   if (p != NULL) {
  46     return resolve_forwarded_not_null(p);
  47   } else {
  48     return p;
  49   }
  50 }
  51 
  52 inline oop ShenandoahBarrierSet::resolve_forwarded_not_null_mutator(oop p) {
  53   return ShenandoahForwarding::get_forwardee_mutator(p);
  54 }
  55 
  56 template <class T>
  57 inline oop ShenandoahBarrierSet::load_reference_barrier_mutator(oop obj, T* load_addr) {
  58   assert(ShenandoahLoadRefBarrier, "should be enabled");
  59   shenandoah_assert_in_cset(load_addr, obj);
  60 
  61   oop fwd = resolve_forwarded_not_null_mutator(obj);
  62   if (obj == fwd) {
  63     assert(_heap->is_evacuation_in_progress(),
  64            "evac should be in progress");
  65     Thread* const t = Thread::current();

  66     fwd = _heap->evacuate_object(obj, t);
  67   }
  68 
  69   if (load_addr != NULL && fwd != obj) {
  70     // Since we are here and we know the load address, update the reference.
  71     ShenandoahHeap::cas_oop(fwd, load_addr, obj);
  72   }
  73 
  74   return fwd;
  75 }
  76 
  77 inline void ShenandoahBarrierSet::enqueue(oop obj) {
  78   assert(_satb_mark_queue_set.is_active(), "only get here when SATB active");
  79 
  80   // Filter marked objects before hitting the SATB queues. The same predicate would
  81   // be used by SATBMQ::filter to eliminate already marked objects downstream, but
  82   // filtering here helps to avoid wasteful SATB queueing work to begin with.
  83   if (!_heap->requires_marking<false>(obj)) return;
  84 
  85   ShenandoahThreadLocalData::satb_mark_queue(Thread::current()).enqueue_known_active(obj);


 320   }
 321 }
 322 
 323 template <class T>
 324 void ShenandoahBarrierSet::arraycopy_marking(T* src, T* dst, size_t count) {
 325   assert(_heap->is_concurrent_mark_in_progress(), "only during marking");
 326   T* array = ShenandoahSATBBarrier ? dst : src;
 327   if (!_heap->marking_context()->allocated_after_mark_start(reinterpret_cast<HeapWord*>(array))) {
 328     arraycopy_work<T, false, false, true>(array, count);
 329   }
 330 }
 331 
 332 inline bool ShenandoahBarrierSet::need_bulk_update(HeapWord* ary) {
 333   return ary < _heap->heap_region_containing(ary)->get_update_watermark();
 334 }
 335 
 336 template <class T>
 337 void ShenandoahBarrierSet::arraycopy_evacuation(T* src, size_t count) {
 338   assert(_heap->is_evacuation_in_progress(), "only during evacuation");
 339   if (need_bulk_update(reinterpret_cast<HeapWord*>(src))) {

 340     arraycopy_work<T, true, true, false>(src, count);
 341   }
 342 }
 343 
 344 template <class T>
 345 void ShenandoahBarrierSet::arraycopy_update(T* src, size_t count) {
 346   assert(_heap->is_update_refs_in_progress(), "only during update-refs");
 347   if (need_bulk_update(reinterpret_cast<HeapWord*>(src))) {
 348     arraycopy_work<T, true, false, false>(src, count);
 349   }
 350 }
 351 
 352 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHBARRIERSET_INLINE_HPP
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