JDK14/Java14源码在线阅读

/*
 * 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
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#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_ ++;              \

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