1 /* 2 * Copyright (c) 2012, 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_VM_SERVICES_DIAGNOSTICCOMMAND_HPP 26 #define SHARE_VM_SERVICES_DIAGNOSTICCOMMAND_HPP 27 28 #include "runtime/arguments.hpp" 29 #include "classfile/vmSymbols.hpp" 30 #include "utilities/ostream.hpp" 31 #include "runtime/vm_version.hpp" 32 #include "runtime/vmThread.hpp" 33 #include "runtime/os.hpp" 34 #include "services/diagnosticArgument.hpp" 35 #include "services/diagnosticCommand.hpp" 36 #include "services/diagnosticFramework.hpp" 37 #include "services/diagnosticCommand_ext.hpp" 38 39 class HelpDCmd : public DCmdWithParser { 40 protected: 41 DCmdArgument<bool> _all; 42 DCmdArgument<char*> _cmd; 43 public: 44 HelpDCmd(outputStream* output, bool heap); 45 static const char* name() { return "help"; } 46 static const char* description() { 47 return "For more information about a specific command use 'help <command>'. " 48 "With no argument this will show a list of available commands. " 49 "'help all' will show help for all commands."; 50 } 51 static const char* impact() { return "Low: "; } 52 static int num_arguments(); 53 virtual void execute(TRAPS); 54 }; 55 56 class VersionDCmd : public DCmd { 57 public: 58 VersionDCmd(outputStream* output, bool heap) : DCmd(output,heap) { } 59 static const char* name() { return "VM.version"; } 60 static const char* description() { 61 return "Print JVM version information."; 62 } 63 static const char* impact() { return "Low: "; } 64 static int num_arguments() { return 0; } 65 virtual void execute(TRAPS); 66 }; 67 68 class CommandLineDCmd : public DCmd { 69 public: 70 CommandLineDCmd(outputStream* output, bool heap) : DCmd(output, heap) { } 71 static const char* name() { return "VM.command_line"; } 72 static const char* description() { 73 return "Print the command line used to start this VM instance."; 74 } 75 static const char* impact() { return "Low: "; } 76 static int num_arguments() { return 0; } 77 virtual void execute(TRAPS) { 78 Arguments::print_on(_output); 79 } 80 }; 81 82 // See also: get_system_properties in attachListener.cpp 83 class PrintSystemPropertiesDCmd : public DCmd { 84 public: 85 PrintSystemPropertiesDCmd(outputStream* output, bool heap) : DCmd(output, heap) { } 86 static const char* name() { return "VM.system_properties"; } 87 static const char* description() { 88 return "Print system properties."; 89 } 90 static const char* impact() { 91 return "Low: "; 92 } 93 static int num_arguments() { return 0; } 94 virtual void execute(TRAPS); 95 }; 96 97 // See also: print_flag in attachListener.cpp 98 class PrintVMFlagsDCmd : public DCmdWithParser { 99 protected: 100 DCmdArgument<bool> _all; 101 public: 102 PrintVMFlagsDCmd(outputStream* output, bool heap); 103 static const char* name() { return "VM.flags"; } 104 static const char* description() { 105 return "Print VM flag options and their current values."; 106 } 107 static const char* impact() { 108 return "Low: "; 109 } 110 static int num_arguments(); 111 virtual void execute(TRAPS); 112 }; 113 114 class VMUptimeDCmd : public DCmdWithParser { 115 protected: 116 DCmdArgument<bool> _date; 117 public: 118 VMUptimeDCmd(outputStream* output, bool heap); 119 static const char* name() { return "VM.uptime"; } 120 static const char* description() { 121 return "Print VM uptime."; 122 } 123 static const char* impact() { 124 return "Low: "; 125 } 126 static int num_arguments(); 127 virtual void execute(TRAPS); 128 }; 129 130 class SystemGCDCmd : public DCmd { 131 public: 132 SystemGCDCmd(outputStream* output, bool heap) : DCmd(output, heap) { } 133 static const char* name() { return "GC.run"; } 134 static const char* description() { 135 return "Call java.lang.System.gc()."; 136 } 137 static const char* impact() { 138 return "Medium: Depends on Java heap size and content."; 139 } 140 static int num_arguments() { return 0; } 141 virtual void execute(TRAPS); 142 }; 143 144 class RunFinalizationDCmd : public DCmd { 145 public: 146 RunFinalizationDCmd(outputStream* output, bool heap) : DCmd(output, heap) { } 147 static const char* name() { return "GC.run_finalization"; } 148 static const char* description() { 149 return "Call java.lang.System.runFinalization()."; 150 } 151 static const char* impact() { 152 return "Medium: Depends on Java content."; 153 } 154 static int num_arguments() { return 0; } 155 virtual void execute(TRAPS); 156 }; 157 158 #ifndef SERVICES_KERNEL // Heap dumping not supported 159 // See also: dump_heap in attachListener.cpp 160 class HeapDumpDCmd : public DCmdWithParser { 161 protected: 162 DCmdArgument<char*> _filename; 163 DCmdArgument<bool> _all; 164 public: 165 HeapDumpDCmd(outputStream* output, bool heap); 166 static const char* name() { 167 return "GC.heap_dump"; 168 } 169 static const char* description() { 170 return "Generate a HPROF format dump of the Java heap."; 171 } 172 static const char* impact() { 173 return "High: Depends on Java heap size and content. " 174 "Request a full GC unless the '-all' option is specified."; 175 } 176 static int num_arguments(); 177 virtual void execute(TRAPS); 178 }; 179 #endif // SERVICES_KERNEL 180 181 // See also: inspeactheap in attachListener.cpp 182 class ClassHistogramDCmd : public DCmdWithParser { 183 protected: 184 DCmdArgument<bool> _all; 185 public: 186 ClassHistogramDCmd(outputStream* output, bool heap); 187 static const char* name() { 188 return "GC.class_histogram"; 189 } 190 static const char* description() { 191 return "Provide statistics about the Java heap usage."; 192 } 193 static const char* impact() { 194 return "High: Depends on Java heap size and content."; 195 } 196 static int num_arguments(); 197 virtual void execute(TRAPS); 198 }; 199 200 // See also: thread_dump in attachListener.cpp 201 class ThreadDumpDCmd : public DCmdWithParser { 202 protected: 203 DCmdArgument<bool> _locks; 204 public: 205 ThreadDumpDCmd(outputStream* output, bool heap); 206 static const char* name() { return "Thread.print"; } 207 static const char* description() { 208 return "Print all threads with stacktraces."; 209 } 210 static const char* impact() { 211 return "Medium: Depends on the number of threads."; 212 } 213 static int num_arguments(); 214 virtual void execute(TRAPS); 215 }; 216 217 #endif // SHARE_VM_SERVICES_DIAGNOSTICCOMMAND_HPP