rev 49736 : [mq]: metaspace-additions-to-jcmd
1 /* 2 * Copyright (c) 2018, 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 #include "precompiled.hpp" 25 #include "memory/metaspace.hpp" 26 #include "services/diagnosticCommand.hpp" 27 #include "services/nmtCommon.hpp" 28 29 30 MetaspaceDCmd::MetaspaceDCmd(outputStream* output, bool heap) 31 : DCmdWithParser(output, heap) 32 , _show_loaders("loaders", "Shows usage by class loader.", "BOOLEAN", false, "false") 33 , _by_chunktype("by_chunktype", "Break down numbers by chunk type.", "BOOLEAN", false, "false") 34 , _by_spacetype("by_spacetype", "Break down numbers by loader type.", "BOOLEAN", false, "false") 35 , _show_vslist("vslist", "Shows details about the virtual space list", "BOOLEAN", false, "false") 36 , _show_vsmap("vsmap", "Shows a map of the virtual spaces", "BOOLEAN", false, "false") 37 , _show_chunk_freelist("chunk-freelist", "Shows details about the free chunk list", "BOOLEAN", false, "false") 38 , _scale("scale", "Memory usage in which to scale. Valid values are: 1, KB, MB or GB (fixed scale) " 39 "or \"dynamic\" for dynamically choosen scale.", 40 "STRING", false, "dynamic") 41 { 42 _dcmdparser.add_dcmd_option(&_show_loaders); 43 _dcmdparser.add_dcmd_option(&_by_chunktype); 44 _dcmdparser.add_dcmd_option(&_by_spacetype); 45 _dcmdparser.add_dcmd_option(&_show_vslist); 46 _dcmdparser.add_dcmd_option(&_show_vsmap); 47 _dcmdparser.add_dcmd_option(&_show_chunk_freelist); 48 _dcmdparser.add_dcmd_option(&_scale); 49 } 50 51 void MetaspaceDCmd::execute(DCmdSource source, TRAPS) { 52 // Parse scale value. 53 const char* scale_value = _scale.value(); 54 size_t scale = 0; 55 if (scale_value != NULL) { 56 if (strcasecmp("dynamic", scale_value) == 0) { 57 scale = 0; 58 } else { 59 scale = NMTUtil::scale_from_name(scale_value); 60 if (scale == 0) { 61 output()->print_cr("Invalid scale: \"%s\". Will use dynamic scaling.", scale_value); 62 } 63 } 64 } 65 // Parse flags. 66 int flags = 0; 67 if (_show_loaders.value()) flags |= MetaspaceUtils::rf_show_loaders; 68 if (_by_chunktype.value()) flags |= MetaspaceUtils::rf_break_down_by_chunktype; 69 if (_by_spacetype.value()) flags |= MetaspaceUtils::rf_break_down_by_spacetype; 70 if (_show_vslist.value()) flags |= MetaspaceUtils::rf_show_vslist; 71 if (_show_vsmap.value()) flags |= MetaspaceUtils::rf_show_vsmap; 72 if (_show_chunk_freelist.value()) flags |= MetaspaceUtils::rf_show_chunk_freelist; 73 VM_PrintMetadata op(output(), scale, flags); 74 VMThread::execute(&op); 75 } 76 --- EOF ---