1 /*
   2  * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
   3  * Copyright (c) 2017, Red Hat, Inc. and/or its affiliates.
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This code is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 only, as
   8  * published by the Free Software Foundation.
   9  *
  10  * This code is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * version 2 for more details (a copy is included in the LICENSE file that
  14  * accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License version
  17  * 2 along with this work; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  21  * or visit www.oracle.com if you need additional information or have any
  22  * questions.
  23  *
  24  */
  25 
  26 #ifndef SHARE_GC_G1_G1ARGUMENTS_HPP
  27 #define SHARE_GC_G1_G1ARGUMENTS_HPP
  28 
  29 #include "gc/shared/gcArguments.hpp"
  30 
  31 class CollectedHeap;
  32 
  33 class G1Arguments : public GCArguments {
  34   friend class G1HeapVerifierTest;
  35 
  36 private:
  37   static size_t MaxMemoryForYoung;
  38 
  39   static void initialize_verification_types();
  40   static void parse_verification_type(const char* type);
  41 
  42   virtual void initialize_alignments();
  43   virtual void initialize_heap_flags_and_sizes();
  44 
  45   void initialize_heterogeneous();
  46 
  47   virtual void initialize();
  48   virtual size_t conservative_max_heap_alignment();
  49   virtual CollectedHeap* create_heap();
  50 
  51 public:
  52   // Heterogeneous heap support
  53   static bool is_heterogeneous_heap();
  54   static size_t reasonable_max_memory_for_young();
  55   static size_t heap_reserved_size_bytes();
  56   static size_t heap_max_size_bytes();
  57 };
  58 
  59 #endif // SHARE_GC_G1_G1ARGUMENTS_HPP