1 /* 2 * Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_MEMORY_METASPACE_METADEBUG_HPP 26 #define SHARE_MEMORY_METASPACE_METADEBUG_HPP 27 28 #include "memory/allocation.hpp" 29 30 namespace metaspace { 31 32 class Metadebug : AllStatic { 33 // Debugging support for Metaspaces 34 static int _allocation_fail_alot_count; 35 36 public: 37 38 static void init_allocation_fail_alot_count(); 39 #ifdef ASSERT 40 static bool test_metadata_failure(); 41 #endif 42 }; 43 44 #ifdef ASSERT 45 #define EVERY_NTH(n) \ 46 { static int counter_ = 0; \ 47 if (n > 0) { \ 48 counter_ ++; \ 49 if (counter_ > n) { \ 50 counter_ = 0; \ 51 52 #define END_EVERY_NTH } } } 53 #endif // ASSERT 54 55 } // namespace metaspace 56 57 #endif // SHARE_MEMORY_METASPACE_METADEBUG_HPP