1 /*
   2  * Copyright (c) 2018, 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_SHARED_GCCONFIG_HPP
  26 #define SHARE_GC_SHARED_GCCONFIG_HPP
  27 
  28 #include "gc/shared/collectedHeap.hpp"
  29 #include "memory/allocation.hpp"
  30 
  31 class GCArguments;
  32 
  33 class GCConfig : public AllStatic {
  34 private:
  35   static GCArguments* _arguments;
  36   static bool         _gc_selected_ergonomically;
  37 
  38   static bool is_no_gc_selected();
  39   static bool is_exactly_one_gc_selected();
  40 
  41   static void select_gc_ergonomically();
  42   static GCArguments* select_gc();
  43 
  44 public:
  45   static void initialize();
  46 
  47   static bool is_gc_supported(CollectedHeap::Name name);
  48   static bool is_gc_selected(CollectedHeap::Name name);
  49   static bool is_gc_selected_ergonomically();
  50 
  51   static GCArguments* arguments();
  52 };
  53 
  54 #endif // SHARE_GC_SHARED_GCCONFIG_HPP