/*

 * Copyright (c) 2017, Red Hat, Inc. and/or its affiliates.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

#ifndef SHARE_GC_SHARED_GCARGUMENTS_HPP

#define SHARE_GC_SHARED_GCARGUMENTS_HPP

#include "memory/allocation.hpp"

class CollectedHeap;

class GCArguments : public CHeapObj<mtGC> {

private:

  static GCArguments* _instance;

  static void select_gc();

  static void select_gc_ergonomically();

  static bool gc_selected();

protected:

  template <class Heap, class Policy>

  CollectedHeap* create_heap_with_policy();

public:

  static jint initialize();

  static bool is_initialized();

  static GCArguments* arguments();

  void post_heap_initialize();

  virtual void initialize_flags();

  // Collector specific function to allow finer grained verification

  // through VerifyGCType. If not overridden the default version will

  // warn that the flag is not supported for the given collector.

  // Returns true if parsing should continue, false otherwise.

  virtual bool parse_verification_type(const char* type);

  virtual size_t conservative_max_heap_alignment() = 0;

  virtual CollectedHeap* create_heap() = 0;

};

#endif // SHARE_GC_SHARED_GCARGUMENTS_HPP