1 /* 2 * Copyright (c) 1997, 2009, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 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 # include "incls/_precompiled.incl" 26 # include "incls/_instanceRefKlass.cpp.incl" 27 28 template <class T> 29 static void specialized_oop_follow_contents(instanceRefKlass* ref, oop obj) { 30 T* referent_addr = (T*)java_lang_ref_Reference::referent_addr(obj); 31 T heap_oop = oopDesc::load_heap_oop(referent_addr); 32 debug_only( 33 if(TraceReferenceGC && PrintGCDetails) { 34 gclog_or_tty->print_cr("instanceRefKlass::oop_follow_contents " INTPTR_FORMAT, obj); 35 } 36 ) 37 if (!oopDesc::is_null(heap_oop)) { 38 oop referent = oopDesc::decode_heap_oop_not_null(heap_oop); 39 if (!referent->is_gc_marked() && 40 MarkSweep::ref_processor()-> 41 discover_reference(obj, ref->reference_type())) { 42 // reference already enqueued, referent will be traversed later 43 ref->instanceKlass::oop_follow_contents(obj); 44 debug_only( 45 if(TraceReferenceGC && PrintGCDetails) { 46 gclog_or_tty->print_cr(" Non NULL enqueued " INTPTR_FORMAT, obj); | 1 /* 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 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 #include "precompiled.hpp" 26 #include "classfile/javaClasses.hpp" 27 #include "classfile/systemDictionary.hpp" 28 #include "gc_implementation/shared/markSweep.inline.hpp" 29 #include "gc_interface/collectedHeap.hpp" 30 #include "gc_interface/collectedHeap.inline.hpp" 31 #include "memory/genCollectedHeap.hpp" 32 #include "memory/genOopClosures.inline.hpp" 33 #include "oops/instanceRefKlass.hpp" 34 #include "oops/oop.inline.hpp" 35 #include "utilities/preserveException.hpp" 36 #ifndef SERIALGC 37 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" 38 #include "gc_implementation/g1/g1OopClosures.inline.hpp" 39 #include "gc_implementation/g1/heapRegionSeq.inline.hpp" 40 #include "gc_implementation/parNew/parOopClosures.inline.hpp" 41 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp" 42 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" 43 #include "oops/oop.pcgc.inline.hpp" 44 #endif 45 46 template <class T> 47 static void specialized_oop_follow_contents(instanceRefKlass* ref, oop obj) { 48 T* referent_addr = (T*)java_lang_ref_Reference::referent_addr(obj); 49 T heap_oop = oopDesc::load_heap_oop(referent_addr); 50 debug_only( 51 if(TraceReferenceGC && PrintGCDetails) { 52 gclog_or_tty->print_cr("instanceRefKlass::oop_follow_contents " INTPTR_FORMAT, obj); 53 } 54 ) 55 if (!oopDesc::is_null(heap_oop)) { 56 oop referent = oopDesc::decode_heap_oop_not_null(heap_oop); 57 if (!referent->is_gc_marked() && 58 MarkSweep::ref_processor()-> 59 discover_reference(obj, ref->reference_type())) { 60 // reference already enqueued, referent will be traversed later 61 ref->instanceKlass::oop_follow_contents(obj); 62 debug_only( 63 if(TraceReferenceGC && PrintGCDetails) { 64 gclog_or_tty->print_cr(" Non NULL enqueued " INTPTR_FORMAT, obj); |