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 nmethod;
  32 
  33 class G1CodeBlobClosure : public CodeBlobClosure {
  34   class HeapRegionGatheringOopClosure : public OopClosure {
  35     G1CollectedHeap* _g1h;
  36     OopClosure* _work;
  37     nmethod* _nm;
  38 
  39     template <typename T>
  40     void do_oop_work(T* p);
  41 
  42   public:
  43     HeapRegionGatheringOopClosure(OopClosure* oc) : _g1h(G1CollectedHeap::heap()), _work(oc), _nm(NULL) {}
  44 
  45     void do_oop(oop* o);
  46     void do_oop(narrowOop* o);
  47 
  48     void set_nm(nmethod* nm) {
  49       _nm = nm;
  50     }
  51   };
  52 
  53   HeapRegionGatheringOopClosure _oc;
  54   bool _keepalive_is_strong;
  55 public:
  56   G1CodeBlobClosure(OopClosure* oc, bool keepalive_is_strong) : _oc(oc), _keepalive_is_strong(keepalive_is_strong) {}
  57 
  58   void do_code_blob(CodeBlob* cb);
  59 };
  60 
  61 #endif // SHARE_GC_G1_G1CODEBLOBCLOSURE_HPP