annotate src/share/vm/runtime/arguments.hpp @ 7212:291ffc492eb6

Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/
author Doug Simon <doug.simon@oracle.com>
date Fri, 14 Dec 2012 14:35:13 +0100
parents 1baf7f1e3f23 53715fb1597d
children 989155e2d07a
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1 /*
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2 * Copyright (c) 1997, 2012, 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_RUNTIME_ARGUMENTS_HPP
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26 #define SHARE_VM_RUNTIME_ARGUMENTS_HPP
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27
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28 #include "runtime/java.hpp"
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29 #include "runtime/perfData.hpp"
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30 #include "utilities/top.hpp"
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31
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32 // Arguments parses the command line and recognizes options
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33
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34 // Invocation API hook typedefs (these should really be defined in jni.hpp)
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35 extern "C" {
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36 typedef void (JNICALL *abort_hook_t)(void);
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37 typedef void (JNICALL *exit_hook_t)(jint code);
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38 typedef jint (JNICALL *vfprintf_hook_t)(FILE *fp, const char *format, va_list args);
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39 }
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40
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41 // Forward declarations
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42
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43 class SysClassPath;
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44
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45 // Element describing System and User (-Dkey=value flags) defined property.
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46
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47 class SystemProperty: public CHeapObj<mtInternal> {
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48 private:
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49 char* _key;
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50 char* _value;
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51 SystemProperty* _next;
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52 bool _writeable;
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53 bool writeable() { return _writeable; }
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54
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55 public:
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56 // Accessors
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57 const char* key() const { return _key; }
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58 char* value() const { return _value; }
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59 SystemProperty* next() const { return _next; }
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60 void set_next(SystemProperty* next) { _next = next; }
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61 bool set_value(char *value) {
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62 if (writeable()) {
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63 if (_value != NULL) {
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64 FreeHeap(_value);
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65 }
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66 _value = AllocateHeap(strlen(value)+1, mtInternal);
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67 if (_value != NULL) {
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68 strcpy(_value, value);
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69 }
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70 return true;
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71 }
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72 return false;
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73 }
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74
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75 void append_value(const char *value) {
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76 char *sp;
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77 size_t len = 0;
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78 if (value != NULL) {
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79 len = strlen(value);
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80 if (_value != NULL) {
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81 len += strlen(_value);
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82 }
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83 sp = AllocateHeap(len+2, mtInternal);
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84 if (sp != NULL) {
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85 if (_value != NULL) {
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86 strcpy(sp, _value);
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87 strcat(sp, os::path_separator());
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88 strcat(sp, value);
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89 FreeHeap(_value);
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90 } else {
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91 strcpy(sp, value);
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92 }
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93 _value = sp;
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94 }
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95 }
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96 }
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97
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98 // Constructor
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99 SystemProperty(const char* key, const char* value, bool writeable) {
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100 if (key == NULL) {
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101 _key = NULL;
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102 } else {
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103 _key = AllocateHeap(strlen(key)+1, mtInternal);
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104 strcpy(_key, key);
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105 }
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106 if (value == NULL) {
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107 _value = NULL;
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108 } else {
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109 _value = AllocateHeap(strlen(value)+1, mtInternal);
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110 strcpy(_value, value);
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111 }
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112 _next = NULL;
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113 _writeable = writeable;
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114 }
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115 };
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116
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117
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118 // For use by -agentlib, -agentpath and -Xrun
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119 class AgentLibrary : public CHeapObj<mtInternal> {
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120 friend class AgentLibraryList;
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121 private:
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122 char* _name;
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123 char* _options;
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124 void* _os_lib;
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125 bool _is_absolute_path;
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126 AgentLibrary* _next;
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127
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128 public:
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129 // Accessors
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130 const char* name() const { return _name; }
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131 char* options() const { return _options; }
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132 bool is_absolute_path() const { return _is_absolute_path; }
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133 void* os_lib() const { return _os_lib; }
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134 void set_os_lib(void* os_lib) { _os_lib = os_lib; }
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135 AgentLibrary* next() const { return _next; }
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136
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137 // Constructor
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138 AgentLibrary(const char* name, const char* options, bool is_absolute_path, void* os_lib) {
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139 _name = AllocateHeap(strlen(name)+1, mtInternal);
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140 strcpy(_name, name);
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141 if (options == NULL) {
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142 _options = NULL;
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143 } else {
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144 _options = AllocateHeap(strlen(options)+1, mtInternal);
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145 strcpy(_options, options);
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146 }
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147 _is_absolute_path = is_absolute_path;
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148 _os_lib = os_lib;
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149 _next = NULL;
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150 }
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151 };
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152
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153 // maintain an order of entry list of AgentLibrary
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154 class AgentLibraryList VALUE_OBJ_CLASS_SPEC {
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155 private:
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156 AgentLibrary* _first;
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157 AgentLibrary* _last;
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158 public:
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159 bool is_empty() const { return _first == NULL; }
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160 AgentLibrary* first() const { return _first; }
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161
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162 // add to the end of the list
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163 void add(AgentLibrary* lib) {
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164 if (is_empty()) {
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165 _first = _last = lib;
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166 } else {
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167 _last->_next = lib;
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168 _last = lib;
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169 }
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170 lib->_next = NULL;
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171 }
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172
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173 // search for and remove a library known to be in the list
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174 void remove(AgentLibrary* lib) {
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175 AgentLibrary* curr;
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176 AgentLibrary* prev = NULL;
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177 for (curr = first(); curr != NULL; prev = curr, curr = curr->next()) {
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178 if (curr == lib) {
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179 break;
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180 }
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181 }
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182 assert(curr != NULL, "always should be found");
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183
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184 if (curr != NULL) {
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185 // it was found, by-pass this library
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186 if (prev == NULL) {
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187 _first = curr->_next;
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188 } else {
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189 prev->_next = curr->_next;
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190 }
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191 if (curr == _last) {
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192 _last = prev;
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193 }
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194 curr->_next = NULL;
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195 }
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196 }
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197
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198 AgentLibraryList() {
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199 _first = NULL;
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200 _last = NULL;
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201 }
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202 };
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203
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204
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205 class Arguments : AllStatic {
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206 friend class VMStructs;
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207 friend class JvmtiExport;
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208 public:
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209 // Operation modi
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210 enum Mode {
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211 _int, // corresponds to -Xint
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212 _mixed, // corresponds to -Xmixed
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213 _comp // corresponds to -Xcomp
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214 };
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215
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216 enum ArgsRange {
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217 arg_unreadable = -3,
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218 arg_too_small = -2,
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219 arg_too_big = -1,
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220 arg_in_range = 0
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221 };
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222
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223 private:
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224
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225 // an array containing all flags specified in the .hotspotrc file
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226 static char** _jvm_flags_array;
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227 static int _num_jvm_flags;
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228 // an array containing all jvm arguments specified in the command line
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229 static char** _jvm_args_array;
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230 static int _num_jvm_args;
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231 #ifdef GRAAL
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232 // an array containing all Graal arguments specified in the command line
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233 static char** _graal_args_array;
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234 static int _num_graal_args;
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235 #endif
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236 // string containing all java command (class/jarfile name and app args)
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237 static char* _java_command;
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238
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239 // Property list
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240 static SystemProperty* _system_properties;
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241
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242 // Quick accessor to System properties in the list:
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243 static SystemProperty *_java_ext_dirs;
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244 static SystemProperty *_java_endorsed_dirs;
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245 static SystemProperty *_sun_boot_library_path;
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246 static SystemProperty *_java_library_path;
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247 static SystemProperty *_java_home;
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248 static SystemProperty *_java_class_path;
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249 static SystemProperty *_sun_boot_class_path;
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250 #ifdef GRAAL
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251 static SystemProperty *_compiler_class_path;
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252 #endif
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253
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254 // Meta-index for knowing what packages are in the boot class path
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255 static char* _meta_index_path;
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256 static char* _meta_index_dir;
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257
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258 // java.vendor.url.bug, bug reporting URL for fatal errors.
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259 static const char* _java_vendor_url_bug;
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260
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261 // sun.java.launcher, private property to provide information about
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262 // java/gamma launcher
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263 static const char* _sun_java_launcher;
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264
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265 // sun.java.launcher.pid, private property
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266 static int _sun_java_launcher_pid;
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267
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268 // was this VM created by the gamma launcher
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269 static bool _created_by_gamma_launcher;
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270
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271 // Option flags
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272 static bool _has_profile;
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273 static bool _has_alloc_profile;
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274 static const char* _gc_log_filename;
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275 static uintx _min_heap_size;
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276
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277 // -Xrun arguments
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278 static AgentLibraryList _libraryList;
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279 static void add_init_library(const char* name, char* options)
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280 { _libraryList.add(new AgentLibrary(name, options, false, NULL)); }
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281
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282 // -agentlib and -agentpath arguments
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283 static AgentLibraryList _agentList;
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284 static void add_init_agent(const char* name, char* options, bool absolute_path)
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285 { _agentList.add(new AgentLibrary(name, options, absolute_path, NULL)); }
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286
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287 // Late-binding agents not started via arguments
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288 static void add_loaded_agent(const char* name, char* options, bool absolute_path, void* os_lib)
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289 { _agentList.add(new AgentLibrary(name, options, absolute_path, os_lib)); }
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290
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291 // Operation modi
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292 static Mode _mode;
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293 static void set_mode_flags(Mode mode);
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294 static bool _java_compiler;
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295 static void set_java_compiler(bool arg) { _java_compiler = arg; }
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296 static bool java_compiler() { return _java_compiler; }
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297
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298 // -Xdebug flag
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299 static bool _xdebug_mode;
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300 static void set_xdebug_mode(bool arg) { _xdebug_mode = arg; }
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301 static bool xdebug_mode() { return _xdebug_mode; }
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302
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303 // Used to save default settings
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304 static bool _AlwaysCompileLoopMethods;
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305 static bool _UseOnStackReplacement;
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306 static bool _BackgroundCompilation;
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307 static bool _ClipInlining;
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308 static bool _CIDynamicCompilePriority;
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309
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310 // Tiered
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311 static void set_tiered_flags();
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312 // CMS/ParNew garbage collectors
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313 static void set_parnew_gc_flags();
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314 static void set_cms_and_parnew_gc_flags();
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315 // UseParallel[Old]GC
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316 static void set_parallel_gc_flags();
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317 // Garbage-First (UseG1GC)
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318 static void set_g1_gc_flags();
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319 // GC ergonomics
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320 static void set_ergonomics_flags();
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321 static void set_shared_spaces_flags();
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322 // Setup heap size
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323 static void set_heap_size();
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324 // Based on automatic selection criteria, should the
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325 // low pause collector be used.
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326 static bool should_auto_select_low_pause_collector();
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327
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328 // Bytecode rewriting
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329 static void set_bytecode_flags();
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330
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331 // Invocation API hooks
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332 static abort_hook_t _abort_hook;
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333 static exit_hook_t _exit_hook;
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334 static vfprintf_hook_t _vfprintf_hook;
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335
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336 // System properties
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337 static bool add_property(const char* prop);
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338
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339 // Aggressive optimization flags.
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340 static void set_aggressive_opts_flags();
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341
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342 // Argument parsing
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343 static void do_pd_flag_adjustments();
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344 static bool parse_argument(const char* arg, FlagValueOrigin origin);
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345 static bool process_argument(const char* arg, jboolean ignore_unrecognized, FlagValueOrigin origin);
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346 static void process_java_launcher_argument(const char*, void*);
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347 static void process_java_compiler_argument(char* arg);
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348 static jint parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p);
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349 static jint parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p);
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350 static jint parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p);
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351 static jint parse_vm_init_args(const JavaVMInitArgs* args);
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352 static jint parse_each_vm_init_arg(const JavaVMInitArgs* args, SysClassPath* scp_p, bool* scp_assembly_required_p, FlagValueOrigin origin);
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353 static jint finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required);
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354 static bool is_bad_option(const JavaVMOption* option, jboolean ignore,
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355 const char* option_type);
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356 static bool is_bad_option(const JavaVMOption* option, jboolean ignore) {
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357 return is_bad_option(option, ignore, NULL);
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358 }
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359 static bool verify_interval(uintx val, uintx min,
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360 uintx max, const char* name);
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361 static bool verify_min_value(intx val, intx min, const char* name);
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362 static bool verify_percentage(uintx value, const char* name);
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363 static void describe_range_error(ArgsRange errcode);
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364 static ArgsRange check_memory_size(julong size, julong min_size);
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365 static ArgsRange parse_memory_size(const char* s, julong* long_arg,
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366 julong min_size);
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367 // Parse a string for a unsigned integer. Returns true if value
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368 // is an unsigned integer greater than or equal to the minimum
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369 // parameter passed and returns the value in uintx_arg. Returns
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370 // false otherwise, with uintx_arg undefined.
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371 static bool parse_uintx(const char* value, uintx* uintx_arg,
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372 uintx min_size);
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373
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374 // methods to build strings from individual args
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375 static void build_jvm_args(const char* arg);
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376 static void build_jvm_flags(const char* arg);
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377 #ifdef GRAAL
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378 static void add_graal_arg(const char* arg);
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379 #endif
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380 static void add_string(char*** bldarray, int* count, const char* arg);
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381 static const char* build_resource_string(char** args, int count);
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382
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383 static bool methodExists(
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384 char* className, char* methodName,
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385 int classesNum, char** classes, bool* allMethods,
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386 int methodsNum, char** methods, bool* allClasses
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387 );
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388
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389 static void parseOnlyLine(
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390 const char* line,
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391 short* classesNum, short* classesMax, char*** classes, bool** allMethods,
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392 short* methodsNum, short* methodsMax, char*** methods, bool** allClasses
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393 );
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394
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395 // Returns true if the string s is in the list of flags that have recently
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396 // been made obsolete. If we detect one of these flags on the command
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397 // line, instead of failing we print a warning message and ignore the
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398 // flag. This gives the user a release or so to stop using the flag.
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399 static bool is_newly_obsolete(const char* s, JDK_Version* buffer);
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400
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401 static short CompileOnlyClassesNum;
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402 static short CompileOnlyClassesMax;
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403 static char** CompileOnlyClasses;
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404 static bool* CompileOnlyAllMethods;
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405
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406 static short CompileOnlyMethodsNum;
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407 static short CompileOnlyMethodsMax;
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408 static char** CompileOnlyMethods;
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409 static bool* CompileOnlyAllClasses;
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410
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411 static short InterpretOnlyClassesNum;
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412 static short InterpretOnlyClassesMax;
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413 static char** InterpretOnlyClasses;
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414 static bool* InterpretOnlyAllMethods;
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415
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416 static bool CheckCompileOnly;
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417
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418 static char* SharedArchivePath;
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419
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420 public:
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421 // Parses the arguments
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422 static jint parse(const JavaVMInitArgs* args);
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423 // Adjusts the arguments after the OS have adjusted the arguments
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424 static jint adjust_after_os();
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425 // Check for consistency in the selection of the garbage collector.
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426 static bool check_gc_consistency();
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427 // Check consistecy or otherwise of VM argument settings
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428 static bool check_vm_args_consistency();
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429 // Check stack pages settings
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430 static bool check_stack_pages();
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431 // Used by os_solaris
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432 static bool process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized);
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433
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434 // return a char* array containing all options
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435 static char** jvm_flags_array() { return _jvm_flags_array; }
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436 static char** jvm_args_array() { return _jvm_args_array; }
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437 #ifdef GRAAL
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438 static char** graal_args_array() { return _graal_args_array; }
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439 static int num_graal_args() { return _num_graal_args; }
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440 #endif
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441 static int num_jvm_flags() { return _num_jvm_flags; }
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442 static int num_jvm_args() { return _num_jvm_args; }
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443 // return the arguments passed to the Java application
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444 static const char* java_command() { return _java_command; }
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445
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446 // print jvm_flags, jvm_args and java_command
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447 static void print_on(outputStream* st);
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448
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449 // convenient methods to obtain / print jvm_flags and jvm_args
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450 static const char* jvm_flags() { return build_resource_string(_jvm_flags_array, _num_jvm_flags); }
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451 static const char* jvm_args() { return build_resource_string(_jvm_args_array, _num_jvm_args); }
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452 static void print_jvm_flags_on(outputStream* st);
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453 static void print_jvm_args_on(outputStream* st);
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454
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455 // -Dkey=value flags
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456 static SystemProperty* system_properties() { return _system_properties; }
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457 static const char* get_property(const char* key);
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458
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459 // -Djava.vendor.url.bug
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460 static const char* java_vendor_url_bug() { return _java_vendor_url_bug; }
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461
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462 // -Dsun.java.launcher
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463 static const char* sun_java_launcher() { return _sun_java_launcher; }
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464 // Was VM created by a Java launcher?
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465 static bool created_by_java_launcher();
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466 // Was VM created by the gamma Java launcher?
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467 static bool created_by_gamma_launcher();
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468 // -Dsun.java.launcher.pid
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469 static int sun_java_launcher_pid() { return _sun_java_launcher_pid; }
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470
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471 // -Xloggc:<file>, if not specified will be NULL
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472 static const char* gc_log_filename() { return _gc_log_filename; }
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473
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474 // -Xprof/-Xaprof
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475 static bool has_profile() { return _has_profile; }
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476 static bool has_alloc_profile() { return _has_alloc_profile; }
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477
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478 // -Xms, -Xmx
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479 static uintx min_heap_size() { return _min_heap_size; }
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480 static void set_min_heap_size(uintx v) { _min_heap_size = v; }
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481
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482 // -Xrun
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483 static AgentLibrary* libraries() { return _libraryList.first(); }
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484 static bool init_libraries_at_startup() { return !_libraryList.is_empty(); }
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485 static void convert_library_to_agent(AgentLibrary* lib)
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486 { _libraryList.remove(lib);
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487 _agentList.add(lib); }
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488
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489 // -agentlib -agentpath
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490 static AgentLibrary* agents() { return _agentList.first(); }
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491 static bool init_agents_at_startup() { return !_agentList.is_empty(); }
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492
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493 // abort, exit, vfprintf hooks
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494 static abort_hook_t abort_hook() { return _abort_hook; }
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495 static exit_hook_t exit_hook() { return _exit_hook; }
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496 static vfprintf_hook_t vfprintf_hook() { return _vfprintf_hook; }
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497
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498 static bool GetCheckCompileOnly () { return CheckCompileOnly; }
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499
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500 static const char* GetSharedArchivePath() { return SharedArchivePath; }
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501
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502 static bool CompileMethod(char* className, char* methodName) {
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503 return
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504 methodExists(
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505 className, methodName,
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506 CompileOnlyClassesNum, CompileOnlyClasses, CompileOnlyAllMethods,
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507 CompileOnlyMethodsNum, CompileOnlyMethods, CompileOnlyAllClasses
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508 );
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509 }
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510
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511 // Java launcher properties
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512 static void process_sun_java_launcher_properties(JavaVMInitArgs* args);
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513
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514 // System properties
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515 static void init_system_properties();
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516
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dfb38ea7da17 6988363: Rebrand vm vendor property settings (jdk7 only)
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517 // Update/Initialize System properties after JDK version number is known
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518 static void init_version_specific_system_properties();
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519
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520 // Property List manipulation
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521 static void PropertyList_add(SystemProperty** plist, SystemProperty *element);
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522 static void PropertyList_add(SystemProperty** plist, const char* k, char* v);
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523 static void PropertyList_unique_add(SystemProperty** plist, const char* k, char* v) {
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524 PropertyList_unique_add(plist, k, v, false);
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525 }
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526 static void PropertyList_unique_add(SystemProperty** plist, const char* k, char* v, jboolean append);
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527 static const char* PropertyList_get_value(SystemProperty* plist, const char* key);
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528 static int PropertyList_count(SystemProperty* pl);
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529 static const char* PropertyList_get_key_at(SystemProperty* pl,int index);
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530 static char* PropertyList_get_value_at(SystemProperty* pl,int index);
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531
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532 // Miscellaneous System property value getter and setters.
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533 static void set_dll_dir(char *value) { _sun_boot_library_path->set_value(value); }
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534 static void set_java_home(char *value) { _java_home->set_value(value); }
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535 static void set_library_path(char *value) { _java_library_path->set_value(value); }
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536 static void set_ext_dirs(char *value) { _java_ext_dirs->set_value(value); }
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537 static void set_endorsed_dirs(char *value) { _java_endorsed_dirs->set_value(value); }
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538 static void set_sysclasspath(char *value) { _sun_boot_class_path->set_value(value); }
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Gilles Duboscq <duboscq@ssw.jku.at>
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539 #ifdef GRAAL
3546
4aa80ca3dbec Separate compiler bootstrappath from application bootstrappath.
Thomas Wuerthinger <thomas@wuerthinger.net>
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540 static void set_compilerclasspath(char *value) { _compiler_class_path->set_value(value); }
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723df37192d6 Make it possible again to build a real client libjvm, drop the UseGraal flag.
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541 #endif
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542 static void append_sysclasspath(const char *value) { _sun_boot_class_path->append_value(value); }
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543 static void set_meta_index_path(char* meta_index_path, char* meta_index_dir) {
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544 _meta_index_path = meta_index_path;
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545 _meta_index_dir = meta_index_dir;
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546 }
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547
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548 static char *get_java_home() { return _java_home->value(); }
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549 static char *get_dll_dir() { return _sun_boot_library_path->value(); }
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550 static char *get_endorsed_dir() { return _java_endorsed_dirs->value(); }
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551 static char *get_sysclasspath() { return _sun_boot_class_path->value(); }
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Gilles Duboscq <duboscq@ssw.jku.at>
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552 #ifdef GRAAL
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Thomas Wuerthinger <thomas@wuerthinger.net>
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553 static char *get_compilerclasspath() { return _compiler_class_path->value(); }
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554 #endif
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555 static char* get_meta_index_path() { return _meta_index_path; }
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556 static char* get_meta_index_dir() { return _meta_index_dir; }
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557
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558 // Operation modi
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559 static Mode mode() { return _mode; }
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560
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561 // Utility: copies src into buf, replacing "%%" with "%" and "%p" with pid.
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562 static bool copy_expand_pid(const char* src, size_t srclen, char* buf, size_t buflen);
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563
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564 #ifdef KERNEL
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565 // For java kernel vm, return property string for kernel properties.
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566 static char *get_kernel_properties();
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567 #endif // KERNEL
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568 };
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569
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570 #endif // SHARE_VM_RUNTIME_ARGUMENTS_HPP