10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 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_VM_OOPS_INSTANCEREFKLASS_INLINE_HPP 26 #define SHARE_VM_OOPS_INSTANCEREFKLASS_INLINE_HPP 27 28 #include "classfile/javaClasses.hpp" 29 #include "gc/shared/referenceProcessor.hpp" 30 #include "oops/instanceKlass.inline.hpp" 31 #include "oops/instanceRefKlass.hpp" 32 #include "oops/oop.inline.hpp" 33 #include "utilities/debug.hpp" 34 #include "utilities/globalDefinitions.hpp" 35 #include "utilities/macros.hpp" 36 37 template <bool nv, typename T, class OopClosureType, class Contains> 38 void InstanceRefKlass::oop_oop_iterate_ref_processing_specialized(oop obj, OopClosureType* closure, Contains& contains) { 39 T* disc_addr = (T*)java_lang_ref_Reference::discovered_addr(obj); 40 if (closure->apply_to_weak_ref_discovered_field()) { 41 Devirtualizer<nv>::do_oop(closure, disc_addr); 42 } 43 44 T* referent_addr = (T*)java_lang_ref_Reference::referent_addr(obj); 45 T heap_oop = oopDesc::load_heap_oop(referent_addr); 46 ReferenceProcessor* rp = closure->ref_processor(); 47 if (!oopDesc::is_null(heap_oop)) { 48 oop referent = oopDesc::decode_heap_oop_not_null(heap_oop); 49 if (!referent->is_gc_marked() && (rp != NULL) && 50 rp->discover_reference(obj, reference_type())) { 51 return; 52 } else if (contains(referent_addr)) { 53 // treat referent as normal oop 54 Devirtualizer<nv>::do_oop(closure, referent_addr); 55 } 56 } 57 T* next_addr = (T*)java_lang_ref_Reference::next_addr(obj); 58 T next_oop = oopDesc::load_heap_oop(next_addr); 59 // Treat discovered as normal oop, if ref is not "active" (next non-NULL) 60 if (!oopDesc::is_null(next_oop) && contains(disc_addr)) { 61 // i.e. ref is not "active" 62 debug_only( 63 if(TraceReferenceGC && PrintGCDetails) { 64 gclog_or_tty->print_cr(" Process discovered as normal " 65 PTR_FORMAT, p2i(disc_addr)); 66 } 67 ) 68 Devirtualizer<nv>::do_oop(closure, disc_addr); 69 } 70 // treat next as normal oop 71 if (contains(next_addr)) { 72 Devirtualizer<nv>::do_oop(closure, next_addr); 73 } 74 } 75 76 class AlwaysContains { 77 public: 78 template <typename T> bool operator()(T* p) const { return true; } 79 }; 80 81 template <bool nv, class OopClosureType> 82 void InstanceRefKlass::oop_oop_iterate_ref_processing(oop obj, OopClosureType* closure) { 83 AlwaysContains always_contains; 84 if (UseCompressedOops) { 85 oop_oop_iterate_ref_processing_specialized<nv, narrowOop>(obj, closure, always_contains); 86 } else { 87 oop_oop_iterate_ref_processing_specialized<nv, oop>(obj, closure, always_contains); | 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 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_VM_OOPS_INSTANCEREFKLASS_INLINE_HPP 26 #define SHARE_VM_OOPS_INSTANCEREFKLASS_INLINE_HPP 27 28 #include "classfile/javaClasses.hpp" 29 #include "gc/shared/referenceProcessor.hpp" 30 #include "logging/log.hpp" 31 #include "oops/instanceKlass.inline.hpp" 32 #include "oops/instanceRefKlass.hpp" 33 #include "oops/oop.inline.hpp" 34 #include "utilities/debug.hpp" 35 #include "utilities/globalDefinitions.hpp" 36 #include "utilities/macros.hpp" 37 38 template <bool nv, typename T, class OopClosureType, class Contains> 39 void InstanceRefKlass::oop_oop_iterate_ref_processing_specialized(oop obj, OopClosureType* closure, Contains& contains) { 40 T* disc_addr = (T*)java_lang_ref_Reference::discovered_addr(obj); 41 if (closure->apply_to_weak_ref_discovered_field()) { 42 Devirtualizer<nv>::do_oop(closure, disc_addr); 43 } 44 45 T* referent_addr = (T*)java_lang_ref_Reference::referent_addr(obj); 46 T heap_oop = oopDesc::load_heap_oop(referent_addr); 47 ReferenceProcessor* rp = closure->ref_processor(); 48 if (!oopDesc::is_null(heap_oop)) { 49 oop referent = oopDesc::decode_heap_oop_not_null(heap_oop); 50 if (!referent->is_gc_marked() && (rp != NULL) && 51 rp->discover_reference(obj, reference_type())) { 52 return; 53 } else if (contains(referent_addr)) { 54 // treat referent as normal oop 55 Devirtualizer<nv>::do_oop(closure, referent_addr); 56 } 57 } 58 T* next_addr = (T*)java_lang_ref_Reference::next_addr(obj); 59 T next_oop = oopDesc::load_heap_oop(next_addr); 60 // Treat discovered as normal oop, if ref is not "active" (next non-NULL) 61 if (!oopDesc::is_null(next_oop) && contains(disc_addr)) { 62 // i.e. ref is not "active" 63 log_develop(gc, ref)(" Process discovered as normal " PTR_FORMAT, p2i(disc_addr)); 64 Devirtualizer<nv>::do_oop(closure, disc_addr); 65 } 66 // treat next as normal oop 67 if (contains(next_addr)) { 68 Devirtualizer<nv>::do_oop(closure, next_addr); 69 } 70 } 71 72 class AlwaysContains { 73 public: 74 template <typename T> bool operator()(T* p) const { return true; } 75 }; 76 77 template <bool nv, class OopClosureType> 78 void InstanceRefKlass::oop_oop_iterate_ref_processing(oop obj, OopClosureType* closure) { 79 AlwaysContains always_contains; 80 if (UseCompressedOops) { 81 oop_oop_iterate_ref_processing_specialized<nv, narrowOop>(obj, closure, always_contains); 82 } else { 83 oop_oop_iterate_ref_processing_specialized<nv, oop>(obj, closure, always_contains); |