1 /* 2 * Copyright (c) 2014, 2020, 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 "aot/aotLoader.hpp" 27 #include "classfile/classLoaderDataGraph.hpp" 28 #include "classfile/stringTable.hpp" 29 #include "gc/shared/oopStorage.inline.hpp" 30 #include "gc/shared/oopStorageSet.hpp" 31 #include "gc/shared/strongRootsScope.hpp" 32 #include "jfr/leakprofiler/chains/bfsClosure.hpp" 33 #include "jfr/leakprofiler/chains/dfsClosure.hpp" 34 #include "jfr/leakprofiler/chains/edgeQueue.hpp" 35 #include "jfr/leakprofiler/chains/rootSetClosure.hpp" 36 #include "jfr/leakprofiler/utilities/unifiedOopRef.inline.hpp" 37 #include "memory/universe.hpp" 38 #include "oops/access.inline.hpp" 39 #include "oops/oop.inline.hpp" 40 #include "prims/jvmtiExport.hpp" 41 #include "runtime/jniHandles.inline.hpp" 42 #include "runtime/synchronizer.hpp" 43 #include "runtime/thread.hpp" 44 #include "services/management.hpp" 45 #include "utilities/align.hpp" 46 47 template <typename Delegate> 48 RootSetClosure<Delegate>::RootSetClosure(Delegate* delegate) : _delegate(delegate) {} 49 50 template <typename Delegate> 51 void RootSetClosure<Delegate>::do_oop(oop* ref) { 52 assert(ref != NULL, "invariant"); 53 assert(is_aligned(ref, HeapWordSize), "invariant"); 54 if (*ref != NULL) { 55 _delegate->do_root(UnifiedOopRef::encode_in_native(ref)); 56 } 57 } 58 59 template <typename Delegate> 60 void RootSetClosure<Delegate>::do_oop(narrowOop* ref) { 61 assert(ref != NULL, "invariant"); 62 assert(is_aligned(ref, sizeof(narrowOop)), "invariant"); 63 if (*ref != 0) { 64 _delegate->do_root(UnifiedOopRef::encode_in_native(ref)); 65 } 66 } 67 68 class RootSetClosureMarkScope : public MarkScope {}; 69 70 template <typename Delegate> 71 void RootSetClosure<Delegate>::process() { 72 RootSetClosureMarkScope mark_scope; 73 CLDToOopClosure cldt_closure(this, ClassLoaderData::_claim_none); 74 ClassLoaderDataGraph::always_strong_cld_do(&cldt_closure); 75 // We don't follow code blob oops, because they have misaligned oops. 76 Threads::oops_do(this, NULL); 77 ObjectSynchronizer::oops_do(this); 78 Universe::oops_do(this); 79 JNIHandles::oops_do(this); 80 JvmtiExport::oops_do(this); 81 OopStorageSet::vm_global()->oops_do(this); 82 Management::oops_do(this); 83 AOTLoader::oops_do(this); 84 } 85 86 template class RootSetClosure<BFSClosure>; 87 template class RootSetClosure<DFSClosure>;