1 /* 2 * Copyright (c) 2005, 2015, 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 "gc/shared/barrierSet.hpp" 27 #include "gc/shared/collectedHeap.hpp" 28 #include "gc/shared/collectedHeap.inline.hpp" 29 #include "oops/oopsHierarchy.hpp" 30 #include "runtime/thread.inline.hpp" 31 #include "utilities/globalDefinitions.hpp" 32 33 #ifdef CHECK_UNHANDLED_OOPS 34 35 void oop::register_oop() { 36 assert (CheckUnhandledOops, "should only call when CheckUnhandledOops"); 37 if (!Universe::is_fully_initialized()) return; 38 // This gets expensive, which is why checking unhandled oops is on a switch. 39 Thread* t = Thread::current_or_null(); 40 if (t != NULL && t->is_Java_thread()) { 41 frame fr = os::current_frame(); 42 // This points to the oop creator, I guess current frame points to caller 43 assert (fr.pc(), "should point to a vm frame"); 44 t->unhandled_oops()->register_unhandled_oop(this, fr.pc()); 45 } 46 } 47 48 void oop::unregister_oop() { 49 assert (CheckUnhandledOops, "should only call when CheckUnhandledOops"); 50 if (!Universe::is_fully_initialized()) return; 51 // This gets expensive, which is why checking unhandled oops is on a switch. 52 Thread* t = Thread::current_or_null(); 53 if (t != NULL && t->is_Java_thread()) { 54 t->unhandled_oops()->unregister_unhandled_oop(this); 55 } 56 } 57 58 bool oop::operator==(const oop o) const { 59 BarrierSet::barrier_set()->verify_equals(this, o); 60 return obj() == o.obj(); 61 } 62 63 bool oop::operator!=(const volatile oop o) const { 64 BarrierSet::barrier_set()->verify_equals(this, o); 65 return obj() != o.obj(); 66 } 67 68 #endif // CHECK_UNHANDLED_OOPS