0
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1 /*
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2 * Copyright 1997-2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 // Arguments parses the command line and recognizes options
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26
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27 // Invocation API hook typedefs (these should really be defined in jni.hpp)
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28 extern "C" {
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29 typedef void (JNICALL *abort_hook_t)(void);
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30 typedef void (JNICALL *exit_hook_t)(jint code);
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31 typedef jint (JNICALL *vfprintf_hook_t)(FILE *fp, const char *format, va_list args);
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32 }
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33
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34 // Forward declarations
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35
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36 class SysClassPath;
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37
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38 // Element describing System and User (-Dkey=value flags) defined property.
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39
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40 class SystemProperty: public CHeapObj {
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41 private:
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42 char* _key;
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43 char* _value;
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44 SystemProperty* _next;
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45 bool _writeable;
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46 bool writeable() { return _writeable; }
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47
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48 public:
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49 // Accessors
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50 const char* key() const { return _key; }
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51 char* value() const { return _value; }
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52 SystemProperty* next() const { return _next; }
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53 void set_next(SystemProperty* next) { _next = next; }
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54 bool set_value(char *value) {
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55 if (writeable()) {
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56 if (_value != NULL) {
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57 FreeHeap(_value);
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58 }
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59 _value = AllocateHeap(strlen(value)+1);
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60 if (_value != NULL) {
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61 strcpy(_value, value);
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62 }
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63 return true;
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64 }
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65 return false;
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66 }
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67
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68 void append_value(const char *value) {
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69 char *sp;
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70 size_t len = 0;
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71 if (value != NULL) {
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72 len = strlen(value);
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73 if (_value != NULL) {
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74 len += strlen(_value);
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75 }
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76 sp = AllocateHeap(len+2);
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77 if (sp != NULL) {
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78 if (_value != NULL) {
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79 strcpy(sp, _value);
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80 strcat(sp, os::path_separator());
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81 strcat(sp, value);
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82 FreeHeap(_value);
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83 } else {
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84 strcpy(sp, value);
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85 }
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86 _value = sp;
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87 }
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88 }
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89 }
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90
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91 // Constructor
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92 SystemProperty(const char* key, const char* value, bool writeable) {
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93 if (key == NULL) {
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94 _key = NULL;
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95 } else {
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96 _key = AllocateHeap(strlen(key)+1);
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97 strcpy(_key, key);
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98 }
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99 if (value == NULL) {
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100 _value = NULL;
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101 } else {
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102 _value = AllocateHeap(strlen(value)+1);
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103 strcpy(_value, value);
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104 }
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105 _next = NULL;
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106 _writeable = writeable;
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107 }
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108 };
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109
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110
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111 // For use by -agentlib, -agentpath and -Xrun
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112 class AgentLibrary : public CHeapObj {
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113 friend class AgentLibraryList;
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114 private:
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115 char* _name;
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116 char* _options;
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117 void* _os_lib;
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118 bool _is_absolute_path;
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119 AgentLibrary* _next;
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120
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121 public:
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122 // Accessors
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123 const char* name() const { return _name; }
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124 char* options() const { return _options; }
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125 bool is_absolute_path() const { return _is_absolute_path; }
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126 void* os_lib() const { return _os_lib; }
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127 void set_os_lib(void* os_lib) { _os_lib = os_lib; }
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128 AgentLibrary* next() const { return _next; }
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129
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130 // Constructor
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131 AgentLibrary(const char* name, const char* options, bool is_absolute_path, void* os_lib) {
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132 _name = AllocateHeap(strlen(name)+1);
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133 strcpy(_name, name);
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134 if (options == NULL) {
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135 _options = NULL;
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136 } else {
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137 _options = AllocateHeap(strlen(options)+1);
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138 strcpy(_options, options);
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139 }
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140 _is_absolute_path = is_absolute_path;
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141 _os_lib = os_lib;
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142 _next = NULL;
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143 }
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144 };
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145
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146 // maintain an order of entry list of AgentLibrary
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147 class AgentLibraryList VALUE_OBJ_CLASS_SPEC {
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148 private:
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149 AgentLibrary* _first;
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150 AgentLibrary* _last;
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151 public:
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152 bool is_empty() const { return _first == NULL; }
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153 AgentLibrary* first() const { return _first; }
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154
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155 // add to the end of the list
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156 void add(AgentLibrary* lib) {
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157 if (is_empty()) {
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158 _first = _last = lib;
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159 } else {
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160 _last->_next = lib;
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161 _last = lib;
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162 }
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163 lib->_next = NULL;
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164 }
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165
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166 // search for and remove a library known to be in the list
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167 void remove(AgentLibrary* lib) {
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168 AgentLibrary* curr;
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169 AgentLibrary* prev = NULL;
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170 for (curr = first(); curr != NULL; prev = curr, curr = curr->next()) {
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171 if (curr == lib) {
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172 break;
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173 }
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174 }
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175 assert(curr != NULL, "always should be found");
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176
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177 if (curr != NULL) {
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178 // it was found, by-pass this library
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179 if (prev == NULL) {
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180 _first = curr->_next;
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181 } else {
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182 prev->_next = curr->_next;
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183 }
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184 if (curr == _last) {
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185 _last = prev;
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186 }
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187 curr->_next = NULL;
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188 }
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189 }
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190
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191 AgentLibraryList() {
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192 _first = NULL;
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193 _last = NULL;
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194 }
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195 };
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196
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197
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198 class Arguments : AllStatic {
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199 friend class VMStructs;
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200 friend class JvmtiExport;
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201 public:
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202 // Operation modi
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203 enum Mode {
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204 _int, // corresponds to -Xint
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205 _mixed, // corresponds to -Xmixed
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206 _comp // corresponds to -Xcomp
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207 };
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208
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209 enum ArgsRange {
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210 arg_unreadable = -3,
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211 arg_too_small = -2,
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212 arg_too_big = -1,
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213 arg_in_range = 0
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214 };
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215
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216 private:
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217
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218 // an array containing all flags specified in the .hotspotrc file
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219 static char** _jvm_flags_array;
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220 static int _num_jvm_flags;
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221 // an array containing all jvm arguments specified in the command line
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222 static char** _jvm_args_array;
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223 static int _num_jvm_args;
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224 // string containing all java command (class/jarfile name and app args)
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225 static char* _java_command;
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226
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227 // Property list
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228 static SystemProperty* _system_properties;
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229
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230 // Quick accessor to System properties in the list:
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231 static SystemProperty *_java_ext_dirs;
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232 static SystemProperty *_java_endorsed_dirs;
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233 static SystemProperty *_sun_boot_library_path;
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234 static SystemProperty *_java_library_path;
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235 static SystemProperty *_java_home;
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236 static SystemProperty *_java_class_path;
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237 static SystemProperty *_sun_boot_class_path;
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238
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239 // Meta-index for knowing what packages are in the boot class path
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240 static char* _meta_index_path;
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241 static char* _meta_index_dir;
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242
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243 // java.vendor.url.bug, bug reporting URL for fatal errors.
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244 static const char* _java_vendor_url_bug;
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245
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246 // sun.java.launcher, private property to provide information about
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247 // java/gamma launcher
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248 static const char* _sun_java_launcher;
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249
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250 // sun.java.launcher.pid, private property
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251 static int _sun_java_launcher_pid;
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252
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253 // Option flags
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254 static bool _has_profile;
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255 static bool _has_alloc_profile;
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256 static const char* _gc_log_filename;
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257 static uintx _initial_heap_size;
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258 static uintx _min_heap_size;
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259
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260 // -Xrun arguments
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261 static AgentLibraryList _libraryList;
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262 static void add_init_library(const char* name, char* options)
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263 { _libraryList.add(new AgentLibrary(name, options, false, NULL)); }
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264
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265 // -agentlib and -agentpath arguments
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266 static AgentLibraryList _agentList;
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267 static void add_init_agent(const char* name, char* options, bool absolute_path)
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268 { _agentList.add(new AgentLibrary(name, options, absolute_path, NULL)); }
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269
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270 // Late-binding agents not started via arguments
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271 static void add_loaded_agent(const char* name, char* options, bool absolute_path, void* os_lib)
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272 { _agentList.add(new AgentLibrary(name, options, absolute_path, os_lib)); }
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273
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274 // Operation modi
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275 static Mode _mode;
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276 static void set_mode_flags(Mode mode);
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277 static bool _java_compiler;
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278 static void set_java_compiler(bool arg) { _java_compiler = arg; }
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279 static bool java_compiler() { return _java_compiler; }
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280
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281 // -Xdebug flag
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282 static bool _xdebug_mode;
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283 static void set_xdebug_mode(bool arg) { _xdebug_mode = arg; }
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284 static bool xdebug_mode() { return _xdebug_mode; }
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285
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286 // Used to save default settings
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287 static bool _AlwaysCompileLoopMethods;
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288 static bool _UseOnStackReplacement;
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289 static bool _BackgroundCompilation;
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290 static bool _ClipInlining;
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291 static bool _CIDynamicCompilePriority;
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292 static intx _Tier2CompileThreshold;
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293
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294 // GC processing
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295 static int nof_parallel_gc_threads();
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296 // CMS/ParNew garbage collectors
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297 static void set_parnew_gc_flags();
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298 static void set_cms_and_parnew_gc_flags();
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299 // UseParallelGC
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300 static void set_parallel_gc_flags();
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301 // GC ergonomics
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302 static void set_ergonomics_flags();
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303 // Based on automatic selection criteria, should the
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304 // low pause collector be used.
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305 static bool should_auto_select_low_pause_collector();
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306
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307 // Bytecode rewriting
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308 static void set_bytecode_flags();
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309
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310 // Invocation API hooks
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311 static abort_hook_t _abort_hook;
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312 static exit_hook_t _exit_hook;
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313 static vfprintf_hook_t _vfprintf_hook;
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314
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315 // System properties
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316 static bool add_property(const char* prop);
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317
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318 // Aggressive optimization flags.
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319 static void set_aggressive_opts_flags();
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320
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321 // Argument parsing
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322 static void do_pd_flag_adjustments();
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323 static bool parse_argument(const char* arg, FlagValueOrigin origin);
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324 static bool process_argument(const char* arg, jboolean ignore_unrecognized, FlagValueOrigin origin);
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325 static void process_java_launcher_argument(const char*, void*);
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326 static void process_java_compiler_argument(char* arg);
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327 static jint parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p);
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328 static jint parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p);
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329 static jint parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p);
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330 static jint parse_vm_init_args(const JavaVMInitArgs* args);
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331 static jint parse_each_vm_init_arg(const JavaVMInitArgs* args, SysClassPath* scp_p, bool* scp_assembly_required_p, FlagValueOrigin origin);
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332 static jint finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required);
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333 static bool is_bad_option(const JavaVMOption* option, jboolean ignore,
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334 const char* option_type);
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335 static bool is_bad_option(const JavaVMOption* option, jboolean ignore) {
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336 return is_bad_option(option, ignore, NULL);
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337 }
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338 static bool verify_percentage(uintx value, const char* name);
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339 static void describe_range_error(ArgsRange errcode);
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340 static ArgsRange check_memory_size(jlong size, jlong min_size);
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341 static ArgsRange parse_memory_size(const char* s, jlong* long_arg,
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342 jlong min_size);
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343
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344 // methods to build strings from individual args
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345 static void build_jvm_args(const char* arg);
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346 static void build_jvm_flags(const char* arg);
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347 static void add_string(char*** bldarray, int* count, const char* arg);
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348 static const char* build_resource_string(char** args, int count);
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349
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350 static bool methodExists(
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351 char* className, char* methodName,
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352 int classesNum, char** classes, bool* allMethods,
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353 int methodsNum, char** methods, bool* allClasses
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354 );
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355
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356 static void parseOnlyLine(
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357 const char* line,
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358 short* classesNum, short* classesMax, char*** classes, bool** allMethods,
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359 short* methodsNum, short* methodsMax, char*** methods, bool** allClasses
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360 );
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361
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362 // Returns true if the string s is in the list of
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363 // flags made obsolete in 1.5.0.
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364 static bool made_obsolete_in_1_5_0(const char* s);
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365
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366 static short CompileOnlyClassesNum;
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367 static short CompileOnlyClassesMax;
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368 static char** CompileOnlyClasses;
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369 static bool* CompileOnlyAllMethods;
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370
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371 static short CompileOnlyMethodsNum;
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372 static short CompileOnlyMethodsMax;
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373 static char** CompileOnlyMethods;
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374 static bool* CompileOnlyAllClasses;
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375
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376 static short InterpretOnlyClassesNum;
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377 static short InterpretOnlyClassesMax;
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378 static char** InterpretOnlyClasses;
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379 static bool* InterpretOnlyAllMethods;
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380
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381 static bool CheckCompileOnly;
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382
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383 static char* SharedArchivePath;
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384
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385 public:
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386 // Parses the arguments
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387 static jint parse(const JavaVMInitArgs* args);
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388 // Check consistecy or otherwise of VM argument settings
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389 static bool check_vm_args_consistency();
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390 // Used by os_solaris
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391 static bool process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized);
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392
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393 // return a char* array containing all options
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394 static char** jvm_flags_array() { return _jvm_flags_array; }
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395 static char** jvm_args_array() { return _jvm_args_array; }
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396 static int num_jvm_flags() { return _num_jvm_flags; }
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397 static int num_jvm_args() { return _num_jvm_args; }
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398 // return the arguments passed to the Java application
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399 static const char* java_command() { return _java_command; }
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400
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401 // print jvm_flags, jvm_args and java_command
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402 static void print_on(outputStream* st);
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403
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404 // convenient methods to obtain / print jvm_flags and jvm_args
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405 static const char* jvm_flags() { return build_resource_string(_jvm_flags_array, _num_jvm_flags); }
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406 static const char* jvm_args() { return build_resource_string(_jvm_args_array, _num_jvm_args); }
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407 static void print_jvm_flags_on(outputStream* st);
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408 static void print_jvm_args_on(outputStream* st);
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409
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410 // -Dkey=value flags
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411 static SystemProperty* system_properties() { return _system_properties; }
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412 static const char* get_property(const char* key);
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413
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414 // -Djava.vendor.url.bug
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415 static const char* java_vendor_url_bug() { return _java_vendor_url_bug; }
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416
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417 // -Dsun.java.launcher
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418 static const char* sun_java_launcher() { return _sun_java_launcher; }
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419 // Was VM created by a Java launcher?
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420 static bool created_by_java_launcher();
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421 // -Dsun.java.launcher.pid
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422 static int sun_java_launcher_pid() { return _sun_java_launcher_pid; }
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423
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424 // -Xloggc:<file>, if not specified will be NULL
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425 static const char* gc_log_filename() { return _gc_log_filename; }
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426
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427 // -Xprof/-Xaprof
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428 static bool has_profile() { return _has_profile; }
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429 static bool has_alloc_profile() { return _has_alloc_profile; }
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430
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431 // -Xms , -Xmx
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432 static uintx initial_heap_size() { return _initial_heap_size; }
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433 static void set_initial_heap_size(uintx v) { _initial_heap_size = v; }
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434 static uintx min_heap_size() { return _min_heap_size; }
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435 static void set_min_heap_size(uintx v) { _min_heap_size = v; }
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436
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437 // -Xrun
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438 static AgentLibrary* libraries() { return _libraryList.first(); }
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439 static bool init_libraries_at_startup() { return !_libraryList.is_empty(); }
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440 static void convert_library_to_agent(AgentLibrary* lib)
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441 { _libraryList.remove(lib);
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442 _agentList.add(lib); }
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443
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444 // -agentlib -agentpath
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445 static AgentLibrary* agents() { return _agentList.first(); }
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446 static bool init_agents_at_startup() { return !_agentList.is_empty(); }
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447
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448 // abort, exit, vfprintf hooks
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449 static abort_hook_t abort_hook() { return _abort_hook; }
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450 static exit_hook_t exit_hook() { return _exit_hook; }
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451 static vfprintf_hook_t vfprintf_hook() { return _vfprintf_hook; }
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452
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453 static bool GetCheckCompileOnly () { return CheckCompileOnly; }
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454
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455 static const char* GetSharedArchivePath() { return SharedArchivePath; }
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456
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457 static bool CompileMethod(char* className, char* methodName) {
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458 return
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459 methodExists(
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460 className, methodName,
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461 CompileOnlyClassesNum, CompileOnlyClasses, CompileOnlyAllMethods,
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462 CompileOnlyMethodsNum, CompileOnlyMethods, CompileOnlyAllClasses
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463 );
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464 }
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465
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466 // Java launcher properties
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467 static void process_sun_java_launcher_properties(JavaVMInitArgs* args);
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468
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469 // System properties
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470 static void init_system_properties();
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471
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472 // Proptery List manipulation
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473 static void PropertyList_add(SystemProperty** plist, SystemProperty *element);
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474 static void PropertyList_add(SystemProperty** plist, const char* k, char* v);
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475 static void PropertyList_unique_add(SystemProperty** plist, const char* k, char* v);
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476 static const char* PropertyList_get_value(SystemProperty* plist, const char* key);
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477 static int PropertyList_count(SystemProperty* pl);
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478 static const char* PropertyList_get_key_at(SystemProperty* pl,int index);
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479 static char* PropertyList_get_value_at(SystemProperty* pl,int index);
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480
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481 // Miscellaneous System property value getter and setters.
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482 static void set_dll_dir(char *value) { _sun_boot_library_path->set_value(value); }
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483 static void set_java_home(char *value) { _java_home->set_value(value); }
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484 static void set_library_path(char *value) { _java_library_path->set_value(value); }
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485 static void set_ext_dirs(char *value) { _java_ext_dirs->set_value(value); }
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486 static void set_endorsed_dirs(char *value) { _java_endorsed_dirs->set_value(value); }
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487 static void set_sysclasspath(char *value) { _sun_boot_class_path->set_value(value); }
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488 static void append_sysclasspath(const char *value) { _sun_boot_class_path->append_value(value); }
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489 static void set_meta_index_path(char* meta_index_path, char* meta_index_dir) {
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490 _meta_index_path = meta_index_path;
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491 _meta_index_dir = meta_index_dir;
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492 }
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493
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494 static char *get_java_home() { return _java_home->value(); }
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495 static char *get_dll_dir() { return _sun_boot_library_path->value(); }
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496 static char *get_endorsed_dir() { return _java_endorsed_dirs->value(); }
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497 static char *get_sysclasspath() { return _sun_boot_class_path->value(); }
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498 static char* get_meta_index_path() { return _meta_index_path; }
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499 static char* get_meta_index_dir() { return _meta_index_dir; }
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500
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501 // Operation modi
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502 static Mode mode() { return _mode; }
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503
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504 // Utility: copies src into buf, replacing "%%" with "%" and "%p" with pid.
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505 static bool copy_expand_pid(const char* src, size_t srclen, char* buf, size_t buflen);
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506
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507 #ifdef KERNEL
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508 // For java kernel vm, return property string for kernel properties.
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509 static char *get_kernel_properties();
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510 #endif // KERNEL
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511 };
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