1 /* 2 * Copyright (c) 2018, 2020, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2018, 2020 SAP SE. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 #ifndef SHARE_MEMORY_METASPACE_METASPACEREPORT_HPP 27 #define SHARE_MEMORY_METASPACE_METASPACEREPORT_HPP 28 29 #include "memory/allocation.hpp" 30 31 namespace metaspace { 32 33 class MetaspaceReporter : public AllStatic { 34 public: 35 36 // Flags for print_report(). 37 enum ReportFlag { 38 // Show usage by class loader. 39 rf_show_loaders = (1 << 0), 40 // Breaks report down by chunk type (small, medium, ...). 41 rf_break_down_by_chunktype = (1 << 1), 42 // Breaks report down by space type (anonymous, reflection, ...). 43 rf_break_down_by_spacetype = (1 << 2), 44 // Print details about the underlying virtual spaces. 45 rf_show_vslist = (1 << 3), 46 // If show_loaders: show loaded classes for each loader. 47 rf_show_classes = (1 << 4) 48 }; 49 50 // This will print out a basic metaspace usage report but 51 // unlike print_report() is guaranteed not to lock or to walk the CLDG. 52 static void print_basic_report(outputStream* st, size_t scale); 53 54 // Prints a report about the current metaspace state. 55 // Optional parts can be enabled via flags. 56 // Function will walk the CLDG and will lock the expand lock; if that is not 57 // convenient, use print_basic_report() instead. 58 static void print_report(outputStream* out, size_t scale = 0, int flags = 0); 59 60 }; 61 62 } // namespace metaspace 63 64 #endif // SHARE_MEMORY_METASPACE_METASPACEREPORT_HPP