| /* |
| * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. |
| * Copyright (c) 2018, SAP and/or its affiliates. |
| * 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. |
| * |
| */ |
| #include "precompiled.hpp" |
| #include "memory/metaspace.hpp" |
| #include "memory/metaspace/metaspaceDCmd.hpp" |
| #include "memory/resourceArea.hpp" |
| #include "services/diagnosticCommand.hpp" |
| #include "services/nmtCommon.hpp" |
| |
| namespace metaspace { |
| |
| MetaspaceDCmd::MetaspaceDCmd(outputStream* output, bool heap) |
| : DCmdWithParser(output, heap) |
| , _basic("basic", "Prints a basic summary (does not need a safepoint).", "BOOLEAN", false, "false") |
| , _show_loaders("show-loaders", "Shows usage by class loader.", "BOOLEAN", false, "false") |
| , _show_classes("show-classes", "If show-loaders is set, shows loaded classes for each loader.", "BOOLEAN", false, "false") |
| , _by_chunktype("by-chunktype", "Break down numbers by chunk type.", "BOOLEAN", false, "false") |
| , _by_spacetype("by-spacetype", "Break down numbers by loader type.", "BOOLEAN", false, "false") |
| , _show_vslist("vslist", "Shows details about the underlying virtual space.", "BOOLEAN", false, "false") |
| , _show_vsmap("vsmap", "Shows chunk composition of the underlying virtual spaces", "BOOLEAN", false, "false") |
| , _scale("scale", "Memory usage in which to scale. Valid values are: 1, KB, MB or GB (fixed scale) " |
| "or \"dynamic\" for a dynamically choosen scale.", |
| "STRING", false, "dynamic") |
| { |
| _dcmdparser.add_dcmd_option(&_basic); |
| _dcmdparser.add_dcmd_option(&_show_loaders); |
| _dcmdparser.add_dcmd_option(&_show_classes); |
| _dcmdparser.add_dcmd_option(&_by_chunktype); |
| _dcmdparser.add_dcmd_option(&_by_spacetype); |
| _dcmdparser.add_dcmd_option(&_show_vslist); |
| _dcmdparser.add_dcmd_option(&_show_vsmap); |
| _dcmdparser.add_dcmd_option(&_scale); |
| } |
| |
| int MetaspaceDCmd::num_arguments() { |
| ResourceMark rm; |
| MetaspaceDCmd* dcmd = new MetaspaceDCmd(NULL, false); |
| if (dcmd != NULL) { |
| DCmdMark mark(dcmd); |
| return dcmd->_dcmdparser.num_arguments(); |
| } else { |
| return 0; |
| } |
| } |
| |
| void MetaspaceDCmd::execute(DCmdSource source, TRAPS) { |
| // Parse scale value. |
| const char* scale_value = _scale.value(); |
| size_t scale = 0; |
| if (scale_value != NULL) { |
| if (strcasecmp("dynamic", scale_value) == 0) { |
| scale = 0; |
| } else { |
| scale = NMT_ONLY(NMTUtil::scale_from_name(scale_value)) NOT_NMT(0); |
| if (scale == 0) { |
| output()->print_cr("Invalid scale: \"%s\". Will use dynamic scaling.", scale_value); |
| } |
| } |
| } |
| if (_basic.value() == true) { |
| if (_show_loaders.value() || _by_chunktype.value() || _by_spacetype.value() || |
| _show_vslist.value() || _show_vsmap.value()) { |
| // Basic mode. Just print essentials. Does not need to be at a safepoint. |
| output()->print_cr("In basic mode, additional arguments are ignored."); |
| } |
| MetaspaceUtils::print_basic_report(output(), scale); |
| } else { |
| // Full mode. Requires safepoint. |
| int flags = 0; |
| if (_show_loaders.value()) flags |= MetaspaceUtils::rf_show_loaders; |
| if (_show_classes.value()) flags |= MetaspaceUtils::rf_show_classes; |
| if (_by_chunktype.value()) flags |= MetaspaceUtils::rf_break_down_by_chunktype; |
| if (_by_spacetype.value()) flags |= MetaspaceUtils::rf_break_down_by_spacetype; |
| if (_show_vslist.value()) flags |= MetaspaceUtils::rf_show_vslist; |
| if (_show_vsmap.value()) flags |= MetaspaceUtils::rf_show_vsmap; |
| VM_PrintMetadata op(output(), scale, flags); |
| VMThread::execute(&op); |
| } |
| } |
| |
| } // namespace metaspace |
| |