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4133
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1 /*
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2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #ifndef SHARE_VM_SERVICES_DIAGNOSTICCOMMAND_HPP
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26 #define SHARE_VM_SERVICES_DIAGNOSTICCOMMAND_HPP
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27
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28 #include "runtime/arguments.hpp"
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29 #include "classfile/vmSymbols.hpp"
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30 #include "utilities/ostream.hpp"
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31 #include "runtime/vm_version.hpp"
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32 #include "runtime/vmThread.hpp"
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33 #include "runtime/os.hpp"
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34 #include "services/diagnosticArgument.hpp"
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35 #include "services/diagnosticCommand.hpp"
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36 #include "services/diagnosticFramework.hpp"
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37
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4773
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38 class HelpDCmd : public DCmdWithParser {
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39 protected:
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40 DCmdArgument<bool> _all;
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41 DCmdArgument<char*> _cmd;
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42 public:
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43 HelpDCmd(outputStream* output, bool heap);
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44 static const char* name() { return "help"; }
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45 static const char* description() {
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46 return "For more information about a specific command use 'help <command>'. "
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47 "With no argument this will show a list of available commands. "
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48 "'help all' will show help for all commands.";
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49 }
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50 static const char* impact() { return "Low: "; }
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51 static int num_arguments();
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52 virtual void execute(TRAPS);
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53 };
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54
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55 class VersionDCmd : public DCmd {
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56 public:
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57 VersionDCmd(outputStream* output, bool heap) : DCmd(output,heap) { }
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58 static const char* name() { return "VM.version"; }
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59 static const char* description() {
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60 return "Print JVM version information.";
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61 }
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62 static const char* impact() { return "Low: "; }
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63 static int num_arguments() { return 0; }
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64 virtual void execute(TRAPS);
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65 };
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66
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67 class CommandLineDCmd : public DCmd {
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68 public:
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69 CommandLineDCmd(outputStream* output, bool heap) : DCmd(output, heap) { }
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70 static const char* name() { return "VM.command_line"; }
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71 static const char* description() {
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72 return "Print the command line used to start this VM instance.";
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73 }
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74 static const char* impact() { return "Low: "; }
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75 static int num_arguments() { return 0; }
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76 virtual void execute(TRAPS) {
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77 Arguments::print_on(_output);
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78 }
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79 };
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80
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81 // See also: get_system_properties in attachListener.cpp
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82 class PrintSystemPropertiesDCmd : public DCmd {
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83 public:
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84 PrintSystemPropertiesDCmd(outputStream* output, bool heap) : DCmd(output, heap) { }
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85 static const char* name() { return "VM.system_properties"; }
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86 static const char* description() {
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87 return "Print system properties.";
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88 }
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89 static const char* impact() {
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90 return "Low: ";
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91 }
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92 static int num_arguments() { return 0; }
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93 virtual void execute(TRAPS);
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94 };
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95
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96 // See also: print_flag in attachListener.cpp
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97 class PrintVMFlagsDCmd : public DCmdWithParser {
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98 protected:
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99 DCmdArgument<bool> _all;
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100 public:
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101 PrintVMFlagsDCmd(outputStream* output, bool heap);
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102 static const char* name() { return "VM.flags"; }
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103 static const char* description() {
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104 return "Print VM flag options and their current values.";
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105 }
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106 static const char* impact() {
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107 return "Low: ";
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108 }
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109 static int num_arguments();
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110 virtual void execute(TRAPS);
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111 };
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112
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113 class VMUptimeDCmd : public DCmdWithParser {
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114 protected:
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115 DCmdArgument<bool> _date;
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116 public:
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117 VMUptimeDCmd(outputStream* output, bool heap);
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118 static const char* name() { return "VM.uptime"; }
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119 static const char* description() {
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120 return "Print VM uptime.";
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121 }
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122 static const char* impact() {
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123 return "Low: ";
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124 }
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125 static int num_arguments();
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126 virtual void execute(TRAPS);
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127 };
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128
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129 class SystemGCDCmd : public DCmd {
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130 public:
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131 SystemGCDCmd(outputStream* output, bool heap) : DCmd(output, heap) { }
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132 static const char* name() { return "GC.run"; }
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133 static const char* description() {
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134 return "Call java.lang.System.gc().";
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135 }
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136 static const char* impact() {
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137 return "Medium: Depends on Java heap size and content.";
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138 }
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139 static int num_arguments() { return 0; }
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140 virtual void execute(TRAPS);
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141 };
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142
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143 class RunFinalizationDCmd : public DCmd {
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144 public:
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145 RunFinalizationDCmd(outputStream* output, bool heap) : DCmd(output, heap) { }
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146 static const char* name() { return "GC.run_finalization"; }
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147 static const char* description() {
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148 return "Call java.lang.System.runFinalization().";
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149 }
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150 static const char* impact() {
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151 return "Medium: Depends on Java content.";
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152 }
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153 static int num_arguments() { return 0; }
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154 virtual void execute(TRAPS);
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155 };
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156
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157 #ifndef SERVICES_KERNEL // Heap dumping not supported
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158 // See also: dump_heap in attachListener.cpp
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159 class HeapDumpDCmd : public DCmdWithParser {
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160 protected:
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161 DCmdArgument<char*> _filename;
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162 DCmdArgument<bool> _all;
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163 public:
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164 HeapDumpDCmd(outputStream* output, bool heap);
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165 static const char* name() {
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166 return "GC.heap_dump";
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167 }
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168 static const char* description() {
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169 return "Generate a HPROF format dump of the Java heap.";
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170 }
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171 static const char* impact() {
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172 return "High: Depends on Java heap size and content. "
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173 "Request a full GC unless the '-all' option is specified.";
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174 }
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175 static int num_arguments();
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176 virtual void execute(TRAPS);
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177 };
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178 #endif // SERVICES_KERNEL
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179
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180 // See also: inspeactheap in attachListener.cpp
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181 class ClassHistogramDCmd : public DCmdWithParser {
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182 protected:
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183 DCmdArgument<bool> _all;
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184 public:
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185 ClassHistogramDCmd(outputStream* output, bool heap);
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186 static const char* name() {
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187 return "GC.class_histogram";
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188 }
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189 static const char* description() {
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190 return "Provide statistics about the Java heap usage.";
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191 }
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192 static const char* impact() {
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193 return "High: Depends on Java heap size and content.";
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194 }
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195 static int num_arguments();
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196 virtual void execute(TRAPS);
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197 };
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198
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199 // See also: thread_dump in attachListener.cpp
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200 class ThreadDumpDCmd : public DCmdWithParser {
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201 protected:
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202 DCmdArgument<bool> _locks;
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203 public:
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204 ThreadDumpDCmd(outputStream* output, bool heap);
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205 static const char* name() { return "Thread.print"; }
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206 static const char* description() {
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207 return "Print all threads with stacktraces.";
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208 }
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209 static const char* impact() {
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210 return "Medium: Depends on the number of threads.";
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211 }
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212 static int num_arguments();
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213 virtual void execute(TRAPS);
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4133
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214 };
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215
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216 #endif // SHARE_VM_SERVICES_DIAGNOSTICCOMMAND_HPP
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