1 /*
   2  * Copyright (c) 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 #ifndef SHARE_VM_GC_G1_G1ROOTCLOSURESET_HPP
  26 #define SHARE_VM_GC_G1_G1ROOTCLOSURESET_HPP
  27 
  28 #include "gc/g1/bufferingOopClosure.hpp"
  29 #include "memory/allocation.hpp"
  30 #include "memory/iterator.hpp"
  31 
  32 class G1RootClosures : public CHeapObj<mtGC> {
  33 
  34 public:
  35   // Closures to process raw oops in the root set.
  36   virtual OopClosure* weak_oops() = 0;
  37   virtual OopClosure* strong_oops() = 0;
  38 
  39   // Closures to process CLDs in the root set.
  40   virtual CLDClosure* weak_clds() = 0;
  41   virtual CLDClosure* strong_clds() = 0;
  42 
  43   // Applied to the CLDs reachable from the thread stacks.
  44   virtual CLDClosure* thread_root_clds() = 0;
  45   // Applied to the weakly reachable CLDs when all strongly reachable
  46   // CLDs are guaranteed to have been processed.
  47   virtual CLDClosure* second_pass_weak_clds() = 0;
  48 
  49   virtual CodeBlobClosure* strong_codeblobs() = 0;
  50   virtual CodeBlobClosure* weak_codeblobs() = 0;
  51   // Applied to the code blobs reachable from the thread stacks.
  52   virtual CodeBlobClosure* thread_root_codeblobs() = 0;
  53 };
  54 
  55 class G1EvacuationRootClosures : public G1RootClosures {
  56 public:
  57   // Flush any buffered state and deferred processing
  58   virtual void flush() = 0;
  59   virtual double closure_app_seconds() = 0;
  60 
  61   // Get a raw oop closure for processing oops, bypassing the flushing above.
  62   virtual OopClosure* raw_weak_oops() = 0;
  63   virtual OopClosure* raw_strong_oops() = 0;
  64 };
  65 
  66 #endif // SHARE_VM_GC_G1_G1ROOTCLOSURESET_HPP