/*
 * Copyright (c) 2001, 2013, 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
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 *
 */

#ifndef SHARE_VM_MEMORY_SPECIALIZED_OOP_CLOSURES_HPP
#define SHARE_VM_MEMORY_SPECIALIZED_OOP_CLOSURES_HPP

#include "utilities/macros.hpp"
#if INCLUDE_ALL_GCS
#include "gc_implementation/g1/g1_specialized_oop_closures.hpp"
#endif // INCLUDE_ALL_GCS

// For keeping stats on effectiveness.
#define ENABLE_SPECIALIZATION_STATS 0

class SpecializationStats {
public:
  enum Kind {
    ik,             // InstanceKlass
    irk,            // InstanceRefKlass
    oa,             // ObjArrayKlass
    NUM_Kinds
  };

#if ENABLE_SPECIALIZATION_STATS
private:
  static bool _init;
  static bool _wrapped;
  static jint _numCallsAll;

  static jint _numCallsTotal[NUM_Kinds];
  static jint _numCalls_nv[NUM_Kinds];

  static jint _numDoOopCallsTotal[NUM_Kinds];
  static jint _numDoOopCalls_nv[NUM_Kinds];
public:
#endif
  static void clear()  PRODUCT_RETURN;

  static inline void record_call()  PRODUCT_RETURN;
  static inline void record_iterate_call_v(Kind k)  PRODUCT_RETURN;
  static inline void record_iterate_call_nv(Kind k)  PRODUCT_RETURN;
  static inline void record_do_oop_call_v(Kind k)  PRODUCT_RETURN;
  static inline void record_do_oop_call_nv(Kind k)  PRODUCT_RETURN;

  static void print() PRODUCT_RETURN;
};

#ifndef PRODUCT
#if ENABLE_SPECIALIZATION_STATS

inline void SpecializationStats::record_call() {
  Atomic::inc(&_numCallsAll);
}
inline void SpecializationStats::record_iterate_call_v(Kind k) {
  Atomic::inc(&_numCallsTotal[k]);
}
inline void SpecializationStats::record_iterate_call_nv(Kind k) {
  Atomic::inc(&_numCallsTotal[k]);
  Atomic::inc(&_numCalls_nv[k]);
}

inline void SpecializationStats::record_do_oop_call_v(Kind k) {
  Atomic::inc(&_numDoOopCallsTotal[k]);
}
inline void SpecializationStats::record_do_oop_call_nv(Kind k) {
  Atomic::inc(&_numDoOopCallsTotal[k]);
  Atomic::inc(&_numDoOopCalls_nv[k]);
}

#else   // !ENABLE_SPECIALIZATION_STATS

inline void SpecializationStats::record_call() {}
inline void SpecializationStats::record_iterate_call_v(Kind k) {}
inline void SpecializationStats::record_iterate_call_nv(Kind k) {}
inline void SpecializationStats::record_do_oop_call_v(Kind k) {}
inline void SpecializationStats::record_do_oop_call_nv(Kind k) {}
inline void SpecializationStats::clear() {}
inline void SpecializationStats::print() {}

#endif  // ENABLE_SPECIALIZATION_STATS
#endif  // !PRODUCT

#endif // SHARE_VM_MEMORY_SPECIALIZED_OOP_CLOSURES_HPP