1 /* 2 * Copyright (c) 2015, 2019, 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 #ifndef SHARE_GC_G1_G1CODEBLOBCLOSURE_HPP 26 #define SHARE_GC_G1_G1CODEBLOBCLOSURE_HPP 27 28 #include "gc/g1/g1CollectedHeap.hpp" 29 #include "memory/iterator.hpp" 30 31 class G1ConcurrentMark; 32 class nmethod; 33 34 class G1CodeBlobClosure : public CodeBlobClosure { 35 // Gather nmethod remembered set entries. 36 class HeapRegionGatheringOopClosure : public OopClosure { 37 G1CollectedHeap* _g1h; 38 OopClosure* _work; 39 nmethod* _nm; 40 41 template <typename T> 42 void do_oop_work(T* p); 43 44 public: HeapRegionGatheringOopClosure(OopClosure * oc)45 HeapRegionGatheringOopClosure(OopClosure* oc) : _g1h(G1CollectedHeap::heap()), _work(oc), _nm(NULL) {} 46 47 void do_oop(oop* o); 48 void do_oop(narrowOop* o); 49 set_nm(nmethod * nm)50 void set_nm(nmethod* nm) { 51 _nm = nm; 52 } 53 }; 54 55 // Mark all oops below TAMS. 56 class MarkingOopClosure : public OopClosure { 57 G1ConcurrentMark* _cm; 58 uint _worker_id; 59 60 template <typename T> 61 void do_oop_work(T* p); 62 63 public: 64 MarkingOopClosure(uint worker_id); 65 66 void do_oop(oop* o); 67 void do_oop(narrowOop* o); 68 }; 69 70 HeapRegionGatheringOopClosure _oc; 71 MarkingOopClosure _marking_oc; 72 73 bool _strong; 74 public: G1CodeBlobClosure(uint worker_id,OopClosure * oc,bool strong)75 G1CodeBlobClosure(uint worker_id, OopClosure* oc, bool strong) : 76 _oc(oc), _marking_oc(worker_id), _strong(strong) { } 77 78 void do_evacuation_and_fixup(nmethod* nm); 79 void do_marking(nmethod* nm); 80 81 void do_code_blob(CodeBlob* cb); 82 }; 83 84 #endif // SHARE_GC_G1_G1CODEBLOBCLOSURE_HPP 85