/*

 * Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.

 * 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

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 */

#ifndef SHARE_PRIMS_RESOLVEDMETHODTABLE_HPP

#define SHARE_PRIMS_RESOLVEDMETHODTABLE_HPP

#include "gc/shared/oopStorage.hpp"

#include "memory/allocation.hpp"

#include "oops/symbol.hpp"

#include "oops/weakHandle.hpp"

class ResolvedMethodTable;

class ResolvedMethodTableConfig;

class ResolvedMethodTable : public AllStatic {

  static OopStorage*              _weak_handles;

  static volatile bool            _has_work;

public:

  // Initialization

  static void create_table();

  static size_t table_size();

  // Lookup and inserts

  static oop find_method(const Method* method);

  static oop add_method(const Method* method, Handle rmethod_name);

  // Callbacks

  static void item_added();

  static void item_removed();

  // Cleaning

  static bool has_work() { return _has_work; }

  // GC Support - Backing storage for the oop*s

  static OopStorage* weak_storage() { return _weak_handles; }

  // Cleaning and table management

  static double get_load_factor();

  static double get_dead_factor();

  static void check_concurrent_work();

  static void trigger_concurrent_work();

  static void do_concurrent_work(JavaThread* jt);

  static void grow(JavaThread* jt);

  static void clean_dead_entries(JavaThread* jt);

  // GC Notification

  // Must be called before a parallel walk where objects might die.

  static void reset_dead_counter();

  // After the parallel walk this method must be called to trigger

  // cleaning. Note it might trigger a resize instead.

  static void finish_dead_counter();

  // If GC uses ParState directly it should add the number of cleared

  // entries to this method.

  static void inc_dead_counter(size_t ndead);

  // JVMTI Support - It is called at safepoint only for RedefineClasses

  JVMTI_ONLY(static void adjust_method_entries(bool * trace_name_printed);)

  // Debugging

  static size_t items_count();

  static void verify();

};

#endif // SHARE_PRIMS_RESOLVEDMETHODTABLE_HPP