/*

 * Copyright (c) 2018, 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

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

 * questions.

 *

 */

#ifndef SHARE_MEMORY_METASPACE_METADEBUG_HPP

#define SHARE_MEMORY_METASPACE_METADEBUG_HPP

#include "memory/allocation.hpp"

namespace metaspace {

class Metadebug : AllStatic {

  // Debugging support for Metaspaces

  static int _allocation_fail_alot_count;

 public:

  static void init_allocation_fail_alot_count();

#ifdef ASSERT

  static bool test_metadata_failure();

#endif

};

#ifdef ASSERT

#define EVERY_NTH(n)          \

{ static int counter_ = 0;    \

  if (n > 0) {                \

    counter_ ++;              \

    if (counter_ > n) {       \

      counter_ = 0;           \

#define END_EVERY_NTH         } } }

#define SOMETIMES(code) \

    EVERY_NTH(VerifyMetaspaceInterval) \

    { code } \

    END_EVERY_NTH

#define ASSERT_SOMETIMES(condition, ...) \

		EVERY_NTH(VerifyMetaspaceInterval) \

		assert( (condition), __VA_ARGS__); \

		END_EVERY_NTH

#else

#define SOMETIMES(code)

#define ASSERT_SOMETIMES(condition, ...)

#endif // ASSERT

} // namespace metaspace

#endif // SHARE_MEMORY_METASPACE_METADEBUG_HPP