0
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1 /*
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2 * Copyright 1997-2007 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 #include "incls/_precompiled.incl"
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26 #include "incls/_arguments.cpp.incl"
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27
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28 #define DEFAULT_VENDOR_URL_BUG "http://java.sun.com/webapps/bugreport/crash.jsp"
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29 #define DEFAULT_JAVA_LAUNCHER "generic"
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30
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31 char** Arguments::_jvm_flags_array = NULL;
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32 int Arguments::_num_jvm_flags = 0;
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33 char** Arguments::_jvm_args_array = NULL;
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34 int Arguments::_num_jvm_args = 0;
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35 char* Arguments::_java_command = NULL;
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36 SystemProperty* Arguments::_system_properties = NULL;
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37 const char* Arguments::_gc_log_filename = NULL;
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38 bool Arguments::_has_profile = false;
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39 bool Arguments::_has_alloc_profile = false;
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40 uintx Arguments::_initial_heap_size = 0;
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41 uintx Arguments::_min_heap_size = 0;
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42 Arguments::Mode Arguments::_mode = _mixed;
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43 bool Arguments::_java_compiler = false;
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44 bool Arguments::_xdebug_mode = false;
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45 const char* Arguments::_java_vendor_url_bug = DEFAULT_VENDOR_URL_BUG;
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46 const char* Arguments::_sun_java_launcher = DEFAULT_JAVA_LAUNCHER;
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47 int Arguments::_sun_java_launcher_pid = -1;
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48
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49 // These parameters are reset in method parse_vm_init_args(JavaVMInitArgs*)
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50 bool Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods;
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51 bool Arguments::_UseOnStackReplacement = UseOnStackReplacement;
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52 bool Arguments::_BackgroundCompilation = BackgroundCompilation;
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53 bool Arguments::_ClipInlining = ClipInlining;
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54 intx Arguments::_Tier2CompileThreshold = Tier2CompileThreshold;
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55
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56 char* Arguments::SharedArchivePath = NULL;
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57
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58 AgentLibraryList Arguments::_libraryList;
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59 AgentLibraryList Arguments::_agentList;
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60
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61 abort_hook_t Arguments::_abort_hook = NULL;
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62 exit_hook_t Arguments::_exit_hook = NULL;
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63 vfprintf_hook_t Arguments::_vfprintf_hook = NULL;
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64
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65
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66 SystemProperty *Arguments::_java_ext_dirs = NULL;
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67 SystemProperty *Arguments::_java_endorsed_dirs = NULL;
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68 SystemProperty *Arguments::_sun_boot_library_path = NULL;
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69 SystemProperty *Arguments::_java_library_path = NULL;
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70 SystemProperty *Arguments::_java_home = NULL;
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71 SystemProperty *Arguments::_java_class_path = NULL;
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72 SystemProperty *Arguments::_sun_boot_class_path = NULL;
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73
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74 char* Arguments::_meta_index_path = NULL;
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75 char* Arguments::_meta_index_dir = NULL;
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76
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77 static bool force_client_mode = false;
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78
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79 // Check if head of 'option' matches 'name', and sets 'tail' remaining part of option string
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80
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81 static bool match_option(const JavaVMOption *option, const char* name,
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82 const char** tail) {
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83 int len = (int)strlen(name);
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84 if (strncmp(option->optionString, name, len) == 0) {
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85 *tail = option->optionString + len;
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86 return true;
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87 } else {
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88 return false;
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89 }
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90 }
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91
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92 static void logOption(const char* opt) {
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93 if (PrintVMOptions) {
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94 jio_fprintf(defaultStream::output_stream(), "VM option '%s'\n", opt);
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95 }
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96 }
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97
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98 // Process java launcher properties.
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99 void Arguments::process_sun_java_launcher_properties(JavaVMInitArgs* args) {
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100 // See if sun.java.launcher or sun.java.launcher.pid is defined.
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101 // Must do this before setting up other system properties,
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102 // as some of them may depend on launcher type.
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103 for (int index = 0; index < args->nOptions; index++) {
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104 const JavaVMOption* option = args->options + index;
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105 const char* tail;
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106
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107 if (match_option(option, "-Dsun.java.launcher=", &tail)) {
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108 process_java_launcher_argument(tail, option->extraInfo);
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109 continue;
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110 }
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111 if (match_option(option, "-Dsun.java.launcher.pid=", &tail)) {
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112 _sun_java_launcher_pid = atoi(tail);
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113 continue;
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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 // Initialize system properties key and value.
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119 void Arguments::init_system_properties() {
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120
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121 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.version", "1.0", false));
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122 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.name",
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123 "Java Virtual Machine Specification", false));
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124 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.vendor",
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125 "Sun Microsystems Inc.", false));
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126 PropertyList_add(&_system_properties, new SystemProperty("java.vm.version", VM_Version::vm_release(), false));
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127 PropertyList_add(&_system_properties, new SystemProperty("java.vm.name", VM_Version::vm_name(), false));
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128 PropertyList_add(&_system_properties, new SystemProperty("java.vm.vendor", VM_Version::vm_vendor(), false));
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129 PropertyList_add(&_system_properties, new SystemProperty("java.vm.info", VM_Version::vm_info_string(), true));
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130
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131 // following are JVMTI agent writeable properties.
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132 // Properties values are set to NULL and they are
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133 // os specific they are initialized in os::init_system_properties_values().
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134 _java_ext_dirs = new SystemProperty("java.ext.dirs", NULL, true);
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135 _java_endorsed_dirs = new SystemProperty("java.endorsed.dirs", NULL, true);
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136 _sun_boot_library_path = new SystemProperty("sun.boot.library.path", NULL, true);
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137 _java_library_path = new SystemProperty("java.library.path", NULL, true);
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138 _java_home = new SystemProperty("java.home", NULL, true);
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139 _sun_boot_class_path = new SystemProperty("sun.boot.class.path", NULL, true);
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140
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141 _java_class_path = new SystemProperty("java.class.path", "", true);
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142
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143 // Add to System Property list.
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144 PropertyList_add(&_system_properties, _java_ext_dirs);
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145 PropertyList_add(&_system_properties, _java_endorsed_dirs);
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146 PropertyList_add(&_system_properties, _sun_boot_library_path);
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147 PropertyList_add(&_system_properties, _java_library_path);
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148 PropertyList_add(&_system_properties, _java_home);
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149 PropertyList_add(&_system_properties, _java_class_path);
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150 PropertyList_add(&_system_properties, _sun_boot_class_path);
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151
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152 // Set OS specific system properties values
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153 os::init_system_properties_values();
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154 }
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155
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156 // String containing commands that will be ignored and cause a
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157 // warning to be issued. These commands should be accepted
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158 // for 1.6 but not 1.7. The string should be cleared at the
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159 // beginning of 1.7.
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160 static const char* obsolete_jvm_flags_1_5_0[] = {
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161 "UseTrainGC",
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162 "UseSpecialLargeObjectHandling",
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163 "UseOversizedCarHandling",
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164 "TraceCarAllocation",
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165 "PrintTrainGCProcessingStats",
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166 "LogOfCarSpaceSize",
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167 "OversizedCarThreshold",
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168 "MinTickInterval",
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169 "DefaultTickInterval",
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170 "MaxTickInterval",
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171 "DelayTickAdjustment",
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172 "ProcessingToTenuringRatio",
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173 "MinTrainLength",
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174 0};
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175
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176 bool Arguments::made_obsolete_in_1_5_0(const char *s) {
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177 int i = 0;
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178 while (obsolete_jvm_flags_1_5_0[i] != NULL) {
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179 // <flag>=xxx form
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180 // [-|+]<flag> form
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181 if ((strncmp(obsolete_jvm_flags_1_5_0[i], s,
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182 strlen(obsolete_jvm_flags_1_5_0[i])) == 0) ||
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183 ((s[0] == '+' || s[0] == '-') &&
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184 (strncmp(obsolete_jvm_flags_1_5_0[i], &s[1],
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185 strlen(obsolete_jvm_flags_1_5_0[i])) == 0))) {
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186 return true;
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187 }
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188 i++;
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189 }
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190 return false;
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191 }
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192
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193 // Constructs the system class path (aka boot class path) from the following
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194 // components, in order:
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195 //
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196 // prefix // from -Xbootclasspath/p:...
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197 // endorsed // the expansion of -Djava.endorsed.dirs=...
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198 // base // from os::get_system_properties() or -Xbootclasspath=
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199 // suffix // from -Xbootclasspath/a:...
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200 //
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201 // java.endorsed.dirs is a list of directories; any jar or zip files in the
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202 // directories are added to the sysclasspath just before the base.
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203 //
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204 // This could be AllStatic, but it isn't needed after argument processing is
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205 // complete.
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206 class SysClassPath: public StackObj {
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207 public:
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208 SysClassPath(const char* base);
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209 ~SysClassPath();
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210
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211 inline void set_base(const char* base);
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212 inline void add_prefix(const char* prefix);
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213 inline void add_suffix(const char* suffix);
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214 inline void reset_path(const char* base);
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215
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216 // Expand the jar/zip files in each directory listed by the java.endorsed.dirs
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217 // property. Must be called after all command-line arguments have been
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218 // processed (in particular, -Djava.endorsed.dirs=...) and before calling
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219 // combined_path().
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220 void expand_endorsed();
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221
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222 inline const char* get_base() const { return _items[_scp_base]; }
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223 inline const char* get_prefix() const { return _items[_scp_prefix]; }
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224 inline const char* get_suffix() const { return _items[_scp_suffix]; }
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225 inline const char* get_endorsed() const { return _items[_scp_endorsed]; }
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226
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227 // Combine all the components into a single c-heap-allocated string; caller
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228 // must free the string if/when no longer needed.
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229 char* combined_path();
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230
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231 private:
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232 // Utility routines.
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233 static char* add_to_path(const char* path, const char* str, bool prepend);
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234 static char* add_jars_to_path(char* path, const char* directory);
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235
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236 inline void reset_item_at(int index);
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237
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238 // Array indices for the items that make up the sysclasspath. All except the
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239 // base are allocated in the C heap and freed by this class.
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240 enum {
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241 _scp_prefix, // from -Xbootclasspath/p:...
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242 _scp_endorsed, // the expansion of -Djava.endorsed.dirs=...
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243 _scp_base, // the default sysclasspath
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244 _scp_suffix, // from -Xbootclasspath/a:...
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245 _scp_nitems // the number of items, must be last.
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246 };
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247
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248 const char* _items[_scp_nitems];
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249 DEBUG_ONLY(bool _expansion_done;)
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250 };
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251
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252 SysClassPath::SysClassPath(const char* base) {
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253 memset(_items, 0, sizeof(_items));
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254 _items[_scp_base] = base;
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255 DEBUG_ONLY(_expansion_done = false;)
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256 }
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257
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258 SysClassPath::~SysClassPath() {
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259 // Free everything except the base.
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260 for (int i = 0; i < _scp_nitems; ++i) {
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261 if (i != _scp_base) reset_item_at(i);
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262 }
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263 DEBUG_ONLY(_expansion_done = false;)
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264 }
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265
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266 inline void SysClassPath::set_base(const char* base) {
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267 _items[_scp_base] = base;
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268 }
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269
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270 inline void SysClassPath::add_prefix(const char* prefix) {
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271 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], prefix, true);
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272 }
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273
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274 inline void SysClassPath::add_suffix(const char* suffix) {
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275 _items[_scp_suffix] = add_to_path(_items[_scp_suffix], suffix, false);
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276 }
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277
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278 inline void SysClassPath::reset_item_at(int index) {
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279 assert(index < _scp_nitems && index != _scp_base, "just checking");
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280 if (_items[index] != NULL) {
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281 FREE_C_HEAP_ARRAY(char, _items[index]);
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282 _items[index] = NULL;
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283 }
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284 }
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285
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286 inline void SysClassPath::reset_path(const char* base) {
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287 // Clear the prefix and suffix.
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288 reset_item_at(_scp_prefix);
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289 reset_item_at(_scp_suffix);
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290 set_base(base);
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291 }
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292
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293 //------------------------------------------------------------------------------
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294
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295 void SysClassPath::expand_endorsed() {
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296 assert(_items[_scp_endorsed] == NULL, "can only be called once.");
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297
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298 const char* path = Arguments::get_property("java.endorsed.dirs");
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299 if (path == NULL) {
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300 path = Arguments::get_endorsed_dir();
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301 assert(path != NULL, "no default for java.endorsed.dirs");
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302 }
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303
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304 char* expanded_path = NULL;
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305 const char separator = *os::path_separator();
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306 const char* const end = path + strlen(path);
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307 while (path < end) {
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308 const char* tmp_end = strchr(path, separator);
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309 if (tmp_end == NULL) {
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310 expanded_path = add_jars_to_path(expanded_path, path);
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311 path = end;
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312 } else {
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313 char* dirpath = NEW_C_HEAP_ARRAY(char, tmp_end - path + 1);
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314 memcpy(dirpath, path, tmp_end - path);
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315 dirpath[tmp_end - path] = '\0';
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316 expanded_path = add_jars_to_path(expanded_path, dirpath);
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317 FREE_C_HEAP_ARRAY(char, dirpath);
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318 path = tmp_end + 1;
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319 }
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320 }
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321 _items[_scp_endorsed] = expanded_path;
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322 DEBUG_ONLY(_expansion_done = true;)
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323 }
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324
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325 // Combine the bootclasspath elements, some of which may be null, into a single
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326 // c-heap-allocated string.
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327 char* SysClassPath::combined_path() {
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328 assert(_items[_scp_base] != NULL, "empty default sysclasspath");
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329 assert(_expansion_done, "must call expand_endorsed() first.");
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330
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331 size_t lengths[_scp_nitems];
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332 size_t total_len = 0;
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333
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334 const char separator = *os::path_separator();
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335
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336 // Get the lengths.
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337 int i;
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338 for (i = 0; i < _scp_nitems; ++i) {
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339 if (_items[i] != NULL) {
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340 lengths[i] = strlen(_items[i]);
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341 // Include space for the separator char (or a NULL for the last item).
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342 total_len += lengths[i] + 1;
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343 }
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344 }
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345 assert(total_len > 0, "empty sysclasspath not allowed");
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346
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347 // Copy the _items to a single string.
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348 char* cp = NEW_C_HEAP_ARRAY(char, total_len);
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349 char* cp_tmp = cp;
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350 for (i = 0; i < _scp_nitems; ++i) {
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351 if (_items[i] != NULL) {
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352 memcpy(cp_tmp, _items[i], lengths[i]);
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353 cp_tmp += lengths[i];
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354 *cp_tmp++ = separator;
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355 }
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356 }
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357 *--cp_tmp = '\0'; // Replace the extra separator.
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358 return cp;
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359 }
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360
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361 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null.
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362 char*
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363 SysClassPath::add_to_path(const char* path, const char* str, bool prepend) {
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364 char *cp;
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365
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366 assert(str != NULL, "just checking");
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367 if (path == NULL) {
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368 size_t len = strlen(str) + 1;
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369 cp = NEW_C_HEAP_ARRAY(char, len);
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370 memcpy(cp, str, len); // copy the trailing null
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371 } else {
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372 const char separator = *os::path_separator();
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373 size_t old_len = strlen(path);
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374 size_t str_len = strlen(str);
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375 size_t len = old_len + str_len + 2;
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376
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377 if (prepend) {
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378 cp = NEW_C_HEAP_ARRAY(char, len);
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379 char* cp_tmp = cp;
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380 memcpy(cp_tmp, str, str_len);
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381 cp_tmp += str_len;
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382 *cp_tmp = separator;
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383 memcpy(++cp_tmp, path, old_len + 1); // copy the trailing null
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384 FREE_C_HEAP_ARRAY(char, path);
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385 } else {
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386 cp = REALLOC_C_HEAP_ARRAY(char, path, len);
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387 char* cp_tmp = cp + old_len;
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388 *cp_tmp = separator;
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389 memcpy(++cp_tmp, str, str_len + 1); // copy the trailing null
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390 }
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391 }
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392 return cp;
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393 }
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394
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395 // Scan the directory and append any jar or zip files found to path.
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396 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null.
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397 char* SysClassPath::add_jars_to_path(char* path, const char* directory) {
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398 DIR* dir = os::opendir(directory);
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399 if (dir == NULL) return path;
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400
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401 char dir_sep[2] = { '\0', '\0' };
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402 size_t directory_len = strlen(directory);
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403 const char fileSep = *os::file_separator();
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404 if (directory[directory_len - 1] != fileSep) dir_sep[0] = fileSep;
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405
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406 /* Scan the directory for jars/zips, appending them to path. */
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407 struct dirent *entry;
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408 char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(directory));
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409 while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL) {
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410 const char* name = entry->d_name;
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411 const char* ext = name + strlen(name) - 4;
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412 bool isJarOrZip = ext > name &&
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413 (os::file_name_strcmp(ext, ".jar") == 0 ||
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414 os::file_name_strcmp(ext, ".zip") == 0);
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415 if (isJarOrZip) {
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416 char* jarpath = NEW_C_HEAP_ARRAY(char, directory_len + 2 + strlen(name));
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417 sprintf(jarpath, "%s%s%s", directory, dir_sep, name);
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418 path = add_to_path(path, jarpath, false);
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419 FREE_C_HEAP_ARRAY(char, jarpath);
|
|
420 }
|
|
421 }
|
|
422 FREE_C_HEAP_ARRAY(char, dbuf);
|
|
423 os::closedir(dir);
|
|
424 return path;
|
|
425 }
|
|
426
|
|
427 // Parses a memory size specification string.
|
|
428 static bool atomll(const char *s, jlong* result) {
|
|
429 jlong n = 0;
|
|
430 int args_read = sscanf(s, os::jlong_format_specifier(), &n);
|
|
431 if (args_read != 1) {
|
|
432 return false;
|
|
433 }
|
|
434 while (*s != '\0' && isdigit(*s)) {
|
|
435 s++;
|
|
436 }
|
|
437 // 4705540: illegal if more characters are found after the first non-digit
|
|
438 if (strlen(s) > 1) {
|
|
439 return false;
|
|
440 }
|
|
441 switch (*s) {
|
|
442 case 'T': case 't':
|
|
443 *result = n * G * K;
|
|
444 return true;
|
|
445 case 'G': case 'g':
|
|
446 *result = n * G;
|
|
447 return true;
|
|
448 case 'M': case 'm':
|
|
449 *result = n * M;
|
|
450 return true;
|
|
451 case 'K': case 'k':
|
|
452 *result = n * K;
|
|
453 return true;
|
|
454 case '\0':
|
|
455 *result = n;
|
|
456 return true;
|
|
457 default:
|
|
458 return false;
|
|
459 }
|
|
460 }
|
|
461
|
|
462 Arguments::ArgsRange Arguments::check_memory_size(jlong size, jlong min_size) {
|
|
463 if (size < min_size) return arg_too_small;
|
|
464 // Check that size will fit in a size_t (only relevant on 32-bit)
|
|
465 if ((julong) size > max_uintx) return arg_too_big;
|
|
466 return arg_in_range;
|
|
467 }
|
|
468
|
|
469 // Describe an argument out of range error
|
|
470 void Arguments::describe_range_error(ArgsRange errcode) {
|
|
471 switch(errcode) {
|
|
472 case arg_too_big:
|
|
473 jio_fprintf(defaultStream::error_stream(),
|
|
474 "The specified size exceeds the maximum "
|
|
475 "representable size.\n");
|
|
476 break;
|
|
477 case arg_too_small:
|
|
478 case arg_unreadable:
|
|
479 case arg_in_range:
|
|
480 // do nothing for now
|
|
481 break;
|
|
482 default:
|
|
483 ShouldNotReachHere();
|
|
484 }
|
|
485 }
|
|
486
|
|
487 static bool set_bool_flag(char* name, bool value, FlagValueOrigin origin) {
|
|
488 return CommandLineFlags::boolAtPut(name, &value, origin);
|
|
489 }
|
|
490
|
|
491
|
|
492 static bool set_fp_numeric_flag(char* name, char* value, FlagValueOrigin origin) {
|
|
493 double v;
|
|
494 if (sscanf(value, "%lf", &v) != 1) {
|
|
495 return false;
|
|
496 }
|
|
497
|
|
498 if (CommandLineFlags::doubleAtPut(name, &v, origin)) {
|
|
499 return true;
|
|
500 }
|
|
501 return false;
|
|
502 }
|
|
503
|
|
504
|
|
505 static bool set_numeric_flag(char* name, char* value, FlagValueOrigin origin) {
|
|
506 jlong v;
|
|
507 intx intx_v;
|
|
508 bool is_neg = false;
|
|
509 // Check the sign first since atomll() parses only unsigned values.
|
|
510 if (*value == '-') {
|
|
511 if (!CommandLineFlags::intxAt(name, &intx_v)) {
|
|
512 return false;
|
|
513 }
|
|
514 value++;
|
|
515 is_neg = true;
|
|
516 }
|
|
517 if (!atomll(value, &v)) {
|
|
518 return false;
|
|
519 }
|
|
520 intx_v = (intx) v;
|
|
521 if (is_neg) {
|
|
522 intx_v = -intx_v;
|
|
523 }
|
|
524 if (CommandLineFlags::intxAtPut(name, &intx_v, origin)) {
|
|
525 return true;
|
|
526 }
|
|
527 uintx uintx_v = (uintx) v;
|
|
528 if (!is_neg && CommandLineFlags::uintxAtPut(name, &uintx_v, origin)) {
|
|
529 return true;
|
|
530 }
|
|
531 return false;
|
|
532 }
|
|
533
|
|
534
|
|
535 static bool set_string_flag(char* name, const char* value, FlagValueOrigin origin) {
|
|
536 if (!CommandLineFlags::ccstrAtPut(name, &value, origin)) return false;
|
|
537 // Contract: CommandLineFlags always returns a pointer that needs freeing.
|
|
538 FREE_C_HEAP_ARRAY(char, value);
|
|
539 return true;
|
|
540 }
|
|
541
|
|
542 static bool append_to_string_flag(char* name, const char* new_value, FlagValueOrigin origin) {
|
|
543 const char* old_value = "";
|
|
544 if (!CommandLineFlags::ccstrAt(name, &old_value)) return false;
|
|
545 size_t old_len = old_value != NULL ? strlen(old_value) : 0;
|
|
546 size_t new_len = strlen(new_value);
|
|
547 const char* value;
|
|
548 char* free_this_too = NULL;
|
|
549 if (old_len == 0) {
|
|
550 value = new_value;
|
|
551 } else if (new_len == 0) {
|
|
552 value = old_value;
|
|
553 } else {
|
|
554 char* buf = NEW_C_HEAP_ARRAY(char, old_len + 1 + new_len + 1);
|
|
555 // each new setting adds another LINE to the switch:
|
|
556 sprintf(buf, "%s\n%s", old_value, new_value);
|
|
557 value = buf;
|
|
558 free_this_too = buf;
|
|
559 }
|
|
560 (void) CommandLineFlags::ccstrAtPut(name, &value, origin);
|
|
561 // CommandLineFlags always returns a pointer that needs freeing.
|
|
562 FREE_C_HEAP_ARRAY(char, value);
|
|
563 if (free_this_too != NULL) {
|
|
564 // CommandLineFlags made its own copy, so I must delete my own temp. buffer.
|
|
565 FREE_C_HEAP_ARRAY(char, free_this_too);
|
|
566 }
|
|
567 return true;
|
|
568 }
|
|
569
|
|
570
|
|
571 bool Arguments::parse_argument(const char* arg, FlagValueOrigin origin) {
|
|
572
|
|
573 // range of acceptable characters spelled out for portability reasons
|
|
574 #define NAME_RANGE "[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]"
|
|
575 #define BUFLEN 255
|
|
576 char name[BUFLEN+1];
|
|
577 char dummy;
|
|
578
|
|
579 if (sscanf(arg, "-%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) {
|
|
580 return set_bool_flag(name, false, origin);
|
|
581 }
|
|
582 if (sscanf(arg, "+%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) {
|
|
583 return set_bool_flag(name, true, origin);
|
|
584 }
|
|
585
|
|
586 char punct;
|
|
587 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "%c", name, &punct) == 2 && punct == '=') {
|
|
588 const char* value = strchr(arg, '=') + 1;
|
|
589 Flag* flag = Flag::find_flag(name, strlen(name));
|
|
590 if (flag != NULL && flag->is_ccstr()) {
|
|
591 if (flag->ccstr_accumulates()) {
|
|
592 return append_to_string_flag(name, value, origin);
|
|
593 } else {
|
|
594 if (value[0] == '\0') {
|
|
595 value = NULL;
|
|
596 }
|
|
597 return set_string_flag(name, value, origin);
|
|
598 }
|
|
599 }
|
|
600 }
|
|
601
|
|
602 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE ":%c", name, &punct) == 2 && punct == '=') {
|
|
603 const char* value = strchr(arg, '=') + 1;
|
|
604 // -XX:Foo:=xxx will reset the string flag to the given value.
|
|
605 if (value[0] == '\0') {
|
|
606 value = NULL;
|
|
607 }
|
|
608 return set_string_flag(name, value, origin);
|
|
609 }
|
|
610
|
|
611 #define SIGNED_FP_NUMBER_RANGE "[-0123456789.]"
|
|
612 #define SIGNED_NUMBER_RANGE "[-0123456789]"
|
|
613 #define NUMBER_RANGE "[0123456789]"
|
|
614 char value[BUFLEN + 1];
|
|
615 char value2[BUFLEN + 1];
|
|
616 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_NUMBER_RANGE "." "%" XSTR(BUFLEN) NUMBER_RANGE "%c", name, value, value2, &dummy) == 3) {
|
|
617 // Looks like a floating-point number -- try again with more lenient format string
|
|
618 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_FP_NUMBER_RANGE "%c", name, value, &dummy) == 2) {
|
|
619 return set_fp_numeric_flag(name, value, origin);
|
|
620 }
|
|
621 }
|
|
622
|
|
623 #define VALUE_RANGE "[-kmgtKMGT0123456789]"
|
|
624 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) VALUE_RANGE "%c", name, value, &dummy) == 2) {
|
|
625 return set_numeric_flag(name, value, origin);
|
|
626 }
|
|
627
|
|
628 return false;
|
|
629 }
|
|
630
|
|
631
|
|
632 void Arguments::add_string(char*** bldarray, int* count, const char* arg) {
|
|
633 assert(bldarray != NULL, "illegal argument");
|
|
634
|
|
635 if (arg == NULL) {
|
|
636 return;
|
|
637 }
|
|
638
|
|
639 int index = *count;
|
|
640
|
|
641 // expand the array and add arg to the last element
|
|
642 (*count)++;
|
|
643 if (*bldarray == NULL) {
|
|
644 *bldarray = NEW_C_HEAP_ARRAY(char*, *count);
|
|
645 } else {
|
|
646 *bldarray = REALLOC_C_HEAP_ARRAY(char*, *bldarray, *count);
|
|
647 }
|
|
648 (*bldarray)[index] = strdup(arg);
|
|
649 }
|
|
650
|
|
651 void Arguments::build_jvm_args(const char* arg) {
|
|
652 add_string(&_jvm_args_array, &_num_jvm_args, arg);
|
|
653 }
|
|
654
|
|
655 void Arguments::build_jvm_flags(const char* arg) {
|
|
656 add_string(&_jvm_flags_array, &_num_jvm_flags, arg);
|
|
657 }
|
|
658
|
|
659 // utility function to return a string that concatenates all
|
|
660 // strings in a given char** array
|
|
661 const char* Arguments::build_resource_string(char** args, int count) {
|
|
662 if (args == NULL || count == 0) {
|
|
663 return NULL;
|
|
664 }
|
|
665 size_t length = strlen(args[0]) + 1; // add 1 for the null terminator
|
|
666 for (int i = 1; i < count; i++) {
|
|
667 length += strlen(args[i]) + 1; // add 1 for a space
|
|
668 }
|
|
669 char* s = NEW_RESOURCE_ARRAY(char, length);
|
|
670 strcpy(s, args[0]);
|
|
671 for (int j = 1; j < count; j++) {
|
|
672 strcat(s, " ");
|
|
673 strcat(s, args[j]);
|
|
674 }
|
|
675 return (const char*) s;
|
|
676 }
|
|
677
|
|
678 void Arguments::print_on(outputStream* st) {
|
|
679 st->print_cr("VM Arguments:");
|
|
680 if (num_jvm_flags() > 0) {
|
|
681 st->print("jvm_flags: "); print_jvm_flags_on(st);
|
|
682 }
|
|
683 if (num_jvm_args() > 0) {
|
|
684 st->print("jvm_args: "); print_jvm_args_on(st);
|
|
685 }
|
|
686 st->print_cr("java_command: %s", java_command() ? java_command() : "<unknown>");
|
|
687 st->print_cr("Launcher Type: %s", _sun_java_launcher);
|
|
688 }
|
|
689
|
|
690 void Arguments::print_jvm_flags_on(outputStream* st) {
|
|
691 if (_num_jvm_flags > 0) {
|
|
692 for (int i=0; i < _num_jvm_flags; i++) {
|
|
693 st->print("%s ", _jvm_flags_array[i]);
|
|
694 }
|
|
695 st->print_cr("");
|
|
696 }
|
|
697 }
|
|
698
|
|
699 void Arguments::print_jvm_args_on(outputStream* st) {
|
|
700 if (_num_jvm_args > 0) {
|
|
701 for (int i=0; i < _num_jvm_args; i++) {
|
|
702 st->print("%s ", _jvm_args_array[i]);
|
|
703 }
|
|
704 st->print_cr("");
|
|
705 }
|
|
706 }
|
|
707
|
|
708 bool Arguments::process_argument(const char* arg, jboolean ignore_unrecognized, FlagValueOrigin origin) {
|
|
709
|
|
710 if (parse_argument(arg, origin)) {
|
|
711 // do nothing
|
|
712 } else if (made_obsolete_in_1_5_0(arg)) {
|
|
713 jio_fprintf(defaultStream::error_stream(),
|
|
714 "Warning: The flag %s has been EOL'd as of 1.5.0 and will"
|
|
715 " be ignored\n", arg);
|
|
716 } else {
|
|
717 if (!ignore_unrecognized) {
|
|
718 jio_fprintf(defaultStream::error_stream(),
|
|
719 "Unrecognized VM option '%s'\n", arg);
|
|
720 // allow for commandline "commenting out" options like -XX:#+Verbose
|
|
721 if (strlen(arg) == 0 || arg[0] != '#') {
|
|
722 return false;
|
|
723 }
|
|
724 }
|
|
725 }
|
|
726 return true;
|
|
727 }
|
|
728
|
|
729
|
|
730 bool Arguments::process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized) {
|
|
731 FILE* stream = fopen(file_name, "rb");
|
|
732 if (stream == NULL) {
|
|
733 if (should_exist) {
|
|
734 jio_fprintf(defaultStream::error_stream(),
|
|
735 "Could not open settings file %s\n", file_name);
|
|
736 return false;
|
|
737 } else {
|
|
738 return true;
|
|
739 }
|
|
740 }
|
|
741
|
|
742 char token[1024];
|
|
743 int pos = 0;
|
|
744
|
|
745 bool in_white_space = true;
|
|
746 bool in_comment = false;
|
|
747 bool in_quote = false;
|
|
748 char quote_c = 0;
|
|
749 bool result = true;
|
|
750
|
|
751 int c = getc(stream);
|
|
752 while(c != EOF) {
|
|
753 if (in_white_space) {
|
|
754 if (in_comment) {
|
|
755 if (c == '\n') in_comment = false;
|
|
756 } else {
|
|
757 if (c == '#') in_comment = true;
|
|
758 else if (!isspace(c)) {
|
|
759 in_white_space = false;
|
|
760 token[pos++] = c;
|
|
761 }
|
|
762 }
|
|
763 } else {
|
|
764 if (c == '\n' || (!in_quote && isspace(c))) {
|
|
765 // token ends at newline, or at unquoted whitespace
|
|
766 // this allows a way to include spaces in string-valued options
|
|
767 token[pos] = '\0';
|
|
768 logOption(token);
|
|
769 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE);
|
|
770 build_jvm_flags(token);
|
|
771 pos = 0;
|
|
772 in_white_space = true;
|
|
773 in_quote = false;
|
|
774 } else if (!in_quote && (c == '\'' || c == '"')) {
|
|
775 in_quote = true;
|
|
776 quote_c = c;
|
|
777 } else if (in_quote && (c == quote_c)) {
|
|
778 in_quote = false;
|
|
779 } else {
|
|
780 token[pos++] = c;
|
|
781 }
|
|
782 }
|
|
783 c = getc(stream);
|
|
784 }
|
|
785 if (pos > 0) {
|
|
786 token[pos] = '\0';
|
|
787 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE);
|
|
788 build_jvm_flags(token);
|
|
789 }
|
|
790 fclose(stream);
|
|
791 return result;
|
|
792 }
|
|
793
|
|
794 //=============================================================================================================
|
|
795 // Parsing of properties (-D)
|
|
796
|
|
797 const char* Arguments::get_property(const char* key) {
|
|
798 return PropertyList_get_value(system_properties(), key);
|
|
799 }
|
|
800
|
|
801 bool Arguments::add_property(const char* prop) {
|
|
802 const char* eq = strchr(prop, '=');
|
|
803 char* key;
|
|
804 // ns must be static--its address may be stored in a SystemProperty object.
|
|
805 const static char ns[1] = {0};
|
|
806 char* value = (char *)ns;
|
|
807
|
|
808 size_t key_len = (eq == NULL) ? strlen(prop) : (eq - prop);
|
|
809 key = AllocateHeap(key_len + 1, "add_property");
|
|
810 strncpy(key, prop, key_len);
|
|
811 key[key_len] = '\0';
|
|
812
|
|
813 if (eq != NULL) {
|
|
814 size_t value_len = strlen(prop) - key_len - 1;
|
|
815 value = AllocateHeap(value_len + 1, "add_property");
|
|
816 strncpy(value, &prop[key_len + 1], value_len + 1);
|
|
817 }
|
|
818
|
|
819 if (strcmp(key, "java.compiler") == 0) {
|
|
820 process_java_compiler_argument(value);
|
|
821 FreeHeap(key);
|
|
822 if (eq != NULL) {
|
|
823 FreeHeap(value);
|
|
824 }
|
|
825 return true;
|
|
826 }
|
|
827 else if (strcmp(key, "sun.java.command") == 0) {
|
|
828
|
|
829 _java_command = value;
|
|
830
|
|
831 // don't add this property to the properties exposed to the java application
|
|
832 FreeHeap(key);
|
|
833 return true;
|
|
834 }
|
|
835 else if (strcmp(key, "sun.java.launcher.pid") == 0) {
|
|
836 // launcher.pid property is private and is processed
|
|
837 // in process_sun_java_launcher_properties();
|
|
838 // the sun.java.launcher property is passed on to the java application
|
|
839 FreeHeap(key);
|
|
840 if (eq != NULL) {
|
|
841 FreeHeap(value);
|
|
842 }
|
|
843 return true;
|
|
844 }
|
|
845 else if (strcmp(key, "java.vendor.url.bug") == 0) {
|
|
846 // save it in _java_vendor_url_bug, so JVM fatal error handler can access
|
|
847 // its value without going through the property list or making a Java call.
|
|
848 _java_vendor_url_bug = value;
|
|
849 }
|
|
850
|
|
851 // Create new property and add at the end of the list
|
|
852 PropertyList_unique_add(&_system_properties, key, value);
|
|
853 return true;
|
|
854 }
|
|
855
|
|
856 //===========================================================================================================
|
|
857 // Setting int/mixed/comp mode flags
|
|
858
|
|
859 void Arguments::set_mode_flags(Mode mode) {
|
|
860 // Set up default values for all flags.
|
|
861 // If you add a flag to any of the branches below,
|
|
862 // add a default value for it here.
|
|
863 set_java_compiler(false);
|
|
864 _mode = mode;
|
|
865
|
|
866 // Ensure Agent_OnLoad has the correct initial values.
|
|
867 // This may not be the final mode; mode may change later in onload phase.
|
|
868 PropertyList_unique_add(&_system_properties, "java.vm.info",
|
|
869 (char*)Abstract_VM_Version::vm_info_string());
|
|
870
|
|
871 UseInterpreter = true;
|
|
872 UseCompiler = true;
|
|
873 UseLoopCounter = true;
|
|
874
|
|
875 // Default values may be platform/compiler dependent -
|
|
876 // use the saved values
|
|
877 ClipInlining = Arguments::_ClipInlining;
|
|
878 AlwaysCompileLoopMethods = Arguments::_AlwaysCompileLoopMethods;
|
|
879 UseOnStackReplacement = Arguments::_UseOnStackReplacement;
|
|
880 BackgroundCompilation = Arguments::_BackgroundCompilation;
|
|
881 Tier2CompileThreshold = Arguments::_Tier2CompileThreshold;
|
|
882
|
|
883 // Change from defaults based on mode
|
|
884 switch (mode) {
|
|
885 default:
|
|
886 ShouldNotReachHere();
|
|
887 break;
|
|
888 case _int:
|
|
889 UseCompiler = false;
|
|
890 UseLoopCounter = false;
|
|
891 AlwaysCompileLoopMethods = false;
|
|
892 UseOnStackReplacement = false;
|
|
893 break;
|
|
894 case _mixed:
|
|
895 // same as default
|
|
896 break;
|
|
897 case _comp:
|
|
898 UseInterpreter = false;
|
|
899 BackgroundCompilation = false;
|
|
900 ClipInlining = false;
|
|
901 break;
|
|
902 }
|
|
903 }
|
|
904
|
|
905
|
|
906 // Conflict: required to use shared spaces (-Xshare:on), but
|
|
907 // incompatible command line options were chosen.
|
|
908
|
|
909 static void no_shared_spaces() {
|
|
910 if (RequireSharedSpaces) {
|
|
911 jio_fprintf(defaultStream::error_stream(),
|
|
912 "Class data sharing is inconsistent with other specified options.\n");
|
|
913 vm_exit_during_initialization("Unable to use shared archive.", NULL);
|
|
914 } else {
|
|
915 FLAG_SET_DEFAULT(UseSharedSpaces, false);
|
|
916 }
|
|
917 }
|
|
918
|
|
919
|
|
920 // If the user has chosen ParallelGCThreads > 0, we set UseParNewGC
|
|
921 // if it's not explictly set or unset. If the user has chosen
|
|
922 // UseParNewGC and not explicitly set ParallelGCThreads we
|
|
923 // set it, unless this is a single cpu machine.
|
|
924 void Arguments::set_parnew_gc_flags() {
|
|
925 assert(!UseSerialGC && !UseParallelGC, "control point invariant");
|
|
926
|
|
927 if (FLAG_IS_DEFAULT(UseParNewGC) && ParallelGCThreads > 1) {
|
|
928 FLAG_SET_DEFAULT(UseParNewGC, true);
|
|
929 } else if (UseParNewGC && ParallelGCThreads == 0) {
|
|
930 FLAG_SET_DEFAULT(ParallelGCThreads, nof_parallel_gc_threads());
|
|
931 if (FLAG_IS_DEFAULT(ParallelGCThreads) && ParallelGCThreads == 1) {
|
|
932 FLAG_SET_DEFAULT(UseParNewGC, false);
|
|
933 }
|
|
934 }
|
|
935 if (!UseParNewGC) {
|
|
936 FLAG_SET_DEFAULT(ParallelGCThreads, 0);
|
|
937 } else {
|
|
938 no_shared_spaces();
|
|
939
|
|
940 // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 correspondinly,
|
|
941 // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration
|
|
942 // we set them to 1024 and 1024.
|
|
943 // See CR 6362902.
|
|
944 if (FLAG_IS_DEFAULT(YoungPLABSize)) {
|
|
945 FLAG_SET_DEFAULT(YoungPLABSize, (intx)1024);
|
|
946 }
|
|
947 if (FLAG_IS_DEFAULT(OldPLABSize)) {
|
|
948 FLAG_SET_DEFAULT(OldPLABSize, (intx)1024);
|
|
949 }
|
|
950
|
|
951 // AlwaysTenure flag should make ParNew to promote all at first collection.
|
|
952 // See CR 6362902.
|
|
953 if (AlwaysTenure) {
|
|
954 FLAG_SET_CMDLINE(intx, MaxTenuringThreshold, 0);
|
|
955 }
|
|
956 }
|
|
957 }
|
|
958
|
|
959 // CAUTION: this code is currently shared by UseParallelGC, UseParNewGC and
|
|
960 // UseconcMarkSweepGC. Further tuning of individual collectors might
|
|
961 // dictate refinement on a per-collector basis.
|
|
962 int Arguments::nof_parallel_gc_threads() {
|
|
963 if (FLAG_IS_DEFAULT(ParallelGCThreads)) {
|
|
964 // For very large machines, there are diminishing returns
|
|
965 // for large numbers of worker threads. Instead of
|
|
966 // hogging the whole system, use 5/8ths of a worker for every
|
|
967 // processor after the first 8. For example, on a 72 cpu
|
|
968 // machine use 8 + (72 - 8) * (5/8) == 48 worker threads.
|
|
969 // This is just a start and needs further tuning and study in
|
|
970 // Tiger.
|
|
971 int ncpus = os::active_processor_count();
|
|
972 return (ncpus <= 8) ? ncpus : 3 + ((ncpus * 5) / 8);
|
|
973 } else {
|
|
974 return ParallelGCThreads;
|
|
975 }
|
|
976 }
|
|
977
|
|
978 // Adjust some sizes to suit CMS and/or ParNew needs; these work well on
|
|
979 // sparc/solaris for certain applications, but would gain from
|
|
980 // further optimization and tuning efforts, and would almost
|
|
981 // certainly gain from analysis of platform and environment.
|
|
982 void Arguments::set_cms_and_parnew_gc_flags() {
|
|
983 if (UseSerialGC || UseParallelGC) {
|
|
984 return;
|
|
985 }
|
|
986
|
|
987 // If we are using CMS, we prefer to UseParNewGC,
|
|
988 // unless explicitly forbidden.
|
|
989 if (UseConcMarkSweepGC && !UseParNewGC && FLAG_IS_DEFAULT(UseParNewGC)) {
|
|
990 FLAG_SET_DEFAULT(UseParNewGC, true);
|
|
991 }
|
|
992
|
|
993 // Turn off AdaptiveSizePolicy by default for cms until it is
|
|
994 // complete. Also turn it off in general if the
|
|
995 // parnew collector has been selected.
|
|
996 if ((UseConcMarkSweepGC || UseParNewGC) &&
|
|
997 FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) {
|
|
998 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false);
|
|
999 }
|
|
1000
|
|
1001 // In either case, adjust ParallelGCThreads and/or UseParNewGC
|
|
1002 // as needed.
|
|
1003 set_parnew_gc_flags();
|
|
1004
|
|
1005 if (!UseConcMarkSweepGC) {
|
|
1006 return;
|
|
1007 }
|
|
1008
|
|
1009 // Now make adjustments for CMS
|
|
1010 size_t young_gen_per_worker;
|
|
1011 intx new_ratio;
|
|
1012 size_t min_new_default;
|
|
1013 intx tenuring_default;
|
|
1014 if (CMSUseOldDefaults) { // old defaults: "old" as of 6.0
|
|
1015 if FLAG_IS_DEFAULT(CMSYoungGenPerWorker) {
|
|
1016 FLAG_SET_DEFAULT(CMSYoungGenPerWorker, 4*M);
|
|
1017 }
|
|
1018 young_gen_per_worker = 4*M;
|
|
1019 new_ratio = (intx)15;
|
|
1020 min_new_default = 4*M;
|
|
1021 tenuring_default = (intx)0;
|
|
1022 } else { // new defaults: "new" as of 6.0
|
|
1023 young_gen_per_worker = CMSYoungGenPerWorker;
|
|
1024 new_ratio = (intx)7;
|
|
1025 min_new_default = 16*M;
|
|
1026 tenuring_default = (intx)4;
|
|
1027 }
|
|
1028
|
|
1029 // Preferred young gen size for "short" pauses
|
|
1030 const uintx parallel_gc_threads =
|
|
1031 (ParallelGCThreads == 0 ? 1 : ParallelGCThreads);
|
|
1032 const size_t preferred_max_new_size_unaligned =
|
|
1033 ScaleForWordSize(young_gen_per_worker * parallel_gc_threads);
|
|
1034 const size_t preferred_max_new_size =
|
|
1035 align_size_up(preferred_max_new_size_unaligned, os::vm_page_size());
|
|
1036
|
|
1037 // Unless explicitly requested otherwise, size young gen
|
|
1038 // for "short" pauses ~ 4M*ParallelGCThreads
|
|
1039 if (FLAG_IS_DEFAULT(MaxNewSize)) { // MaxNewSize not set at command-line
|
|
1040 if (!FLAG_IS_DEFAULT(NewSize)) { // NewSize explicitly set at command-line
|
|
1041 FLAG_SET_DEFAULT(MaxNewSize, MAX2(NewSize, preferred_max_new_size));
|
|
1042 } else {
|
|
1043 FLAG_SET_DEFAULT(MaxNewSize, preferred_max_new_size);
|
|
1044 }
|
|
1045 }
|
|
1046 // Unless explicitly requested otherwise, prefer a large
|
|
1047 // Old to Young gen size so as to shift the collection load
|
|
1048 // to the old generation concurrent collector
|
|
1049 if (FLAG_IS_DEFAULT(NewRatio)) {
|
|
1050 FLAG_SET_DEFAULT(NewRatio, MAX2(NewRatio, new_ratio));
|
|
1051
|
|
1052 size_t min_new = align_size_up(ScaleForWordSize(min_new_default), os::vm_page_size());
|
|
1053 size_t prev_initial_size = initial_heap_size();
|
|
1054 if (prev_initial_size != 0 && prev_initial_size < min_new+OldSize) {
|
|
1055 set_initial_heap_size(min_new+OldSize);
|
|
1056 // Currently minimum size and the initial heap sizes are the same.
|
|
1057 set_min_heap_size(initial_heap_size());
|
|
1058 if (PrintGCDetails && Verbose) {
|
|
1059 warning("Initial heap size increased to " SIZE_FORMAT " M from "
|
|
1060 SIZE_FORMAT " M; use -XX:NewSize=... for finer control.",
|
|
1061 initial_heap_size()/M, prev_initial_size/M);
|
|
1062 }
|
|
1063 }
|
|
1064 // MaxHeapSize is aligned down in collectorPolicy
|
|
1065 size_t max_heap = align_size_down(MaxHeapSize,
|
|
1066 CardTableRS::ct_max_alignment_constraint());
|
|
1067
|
|
1068 if (max_heap > min_new) {
|
|
1069 // Unless explicitly requested otherwise, make young gen
|
|
1070 // at least min_new, and at most preferred_max_new_size.
|
|
1071 if (FLAG_IS_DEFAULT(NewSize)) {
|
|
1072 FLAG_SET_DEFAULT(NewSize, MAX2(NewSize, min_new));
|
|
1073 FLAG_SET_DEFAULT(NewSize, MIN2(preferred_max_new_size, NewSize));
|
|
1074 }
|
|
1075 // Unless explicitly requested otherwise, size old gen
|
|
1076 // so that it's at least 3X of NewSize to begin with;
|
|
1077 // later NewRatio will decide how it grows; see above.
|
|
1078 if (FLAG_IS_DEFAULT(OldSize)) {
|
|
1079 if (max_heap > NewSize) {
|
|
1080 FLAG_SET_DEFAULT(OldSize, MIN2(3*NewSize, max_heap - NewSize));
|
|
1081 }
|
|
1082 }
|
|
1083 }
|
|
1084 }
|
|
1085 // Unless explicitly requested otherwise, definitely
|
|
1086 // promote all objects surviving "tenuring_default" scavenges.
|
|
1087 if (FLAG_IS_DEFAULT(MaxTenuringThreshold) &&
|
|
1088 FLAG_IS_DEFAULT(SurvivorRatio)) {
|
|
1089 FLAG_SET_DEFAULT(MaxTenuringThreshold, tenuring_default);
|
|
1090 }
|
|
1091 // If we decided above (or user explicitly requested)
|
|
1092 // `promote all' (via MaxTenuringThreshold := 0),
|
|
1093 // prefer minuscule survivor spaces so as not to waste
|
|
1094 // space for (non-existent) survivors
|
|
1095 if (FLAG_IS_DEFAULT(SurvivorRatio) && MaxTenuringThreshold == 0) {
|
|
1096 FLAG_SET_DEFAULT(SurvivorRatio, MAX2((intx)1024, SurvivorRatio));
|
|
1097 }
|
|
1098 // If OldPLABSize is set and CMSParPromoteBlocksToClaim is not,
|
|
1099 // set CMSParPromoteBlocksToClaim equal to OldPLABSize.
|
|
1100 // This is done in order to make ParNew+CMS configuration to work
|
|
1101 // with YoungPLABSize and OldPLABSize options.
|
|
1102 // See CR 6362902.
|
|
1103 if (!FLAG_IS_DEFAULT(OldPLABSize)) {
|
|
1104 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) {
|
|
1105 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, OldPLABSize);
|
|
1106 }
|
|
1107 else {
|
|
1108 // OldPLABSize and CMSParPromoteBlocksToClaim are both set.
|
|
1109 // CMSParPromoteBlocksToClaim is a collector-specific flag, so
|
|
1110 // we'll let it to take precedence.
|
|
1111 jio_fprintf(defaultStream::error_stream(),
|
|
1112 "Both OldPLABSize and CMSParPromoteBlocksToClaim options are specified "
|
|
1113 "for the CMS collector. CMSParPromoteBlocksToClaim will take precedence.\n");
|
|
1114 }
|
|
1115 }
|
|
1116 }
|
|
1117
|
|
1118 bool Arguments::should_auto_select_low_pause_collector() {
|
|
1119 if (UseAutoGCSelectPolicy &&
|
|
1120 !FLAG_IS_DEFAULT(MaxGCPauseMillis) &&
|
|
1121 (MaxGCPauseMillis <= AutoGCSelectPauseMillis)) {
|
|
1122 if (PrintGCDetails) {
|
|
1123 // Cannot use gclog_or_tty yet.
|
|
1124 tty->print_cr("Automatic selection of the low pause collector"
|
|
1125 " based on pause goal of %d (ms)", MaxGCPauseMillis);
|
|
1126 }
|
|
1127 return true;
|
|
1128 }
|
|
1129 return false;
|
|
1130 }
|
|
1131
|
|
1132 void Arguments::set_ergonomics_flags() {
|
|
1133 // Parallel GC is not compatible with sharing. If one specifies
|
|
1134 // that they want sharing explicitly, do not set ergonmics flags.
|
|
1135 if (DumpSharedSpaces || ForceSharedSpaces) {
|
|
1136 return;
|
|
1137 }
|
|
1138
|
|
1139 if (os::is_server_class_machine() && !force_client_mode ) {
|
|
1140 // If no other collector is requested explicitly,
|
|
1141 // let the VM select the collector based on
|
|
1142 // machine class and automatic selection policy.
|
|
1143 if (!UseSerialGC &&
|
|
1144 !UseConcMarkSweepGC &&
|
|
1145 !UseParNewGC &&
|
|
1146 !DumpSharedSpaces &&
|
|
1147 FLAG_IS_DEFAULT(UseParallelGC)) {
|
|
1148 if (should_auto_select_low_pause_collector()) {
|
|
1149 FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true);
|
|
1150 set_cms_and_parnew_gc_flags();
|
|
1151 } else {
|
|
1152 FLAG_SET_ERGO(bool, UseParallelGC, true);
|
|
1153 }
|
|
1154 no_shared_spaces();
|
|
1155 }
|
|
1156
|
|
1157 // This is here because the parallel collector could
|
|
1158 // have been selected so this initialization should
|
|
1159 // still be done.
|
|
1160 set_parallel_gc_flags();
|
|
1161 }
|
|
1162 }
|
|
1163
|
|
1164 void Arguments::set_parallel_gc_flags() {
|
|
1165 // If parallel old was requested, automatically enable parallel scavenge.
|
|
1166 if (UseParallelOldGC && !UseParallelGC && FLAG_IS_DEFAULT(UseParallelGC)) {
|
|
1167 FLAG_SET_DEFAULT(UseParallelGC, true);
|
|
1168 }
|
|
1169
|
|
1170 // If no heap maximum was requested explicitly, use some reasonable fraction
|
|
1171 // of the physical memory, up to a maximum of 1GB.
|
|
1172 if (UseParallelGC) {
|
|
1173 if (FLAG_IS_DEFAULT(MaxHeapSize)) {
|
|
1174 const uint64_t reasonable_fraction =
|
|
1175 os::physical_memory() / DefaultMaxRAMFraction;
|
|
1176 const uint64_t maximum_size = (uint64_t) DefaultMaxRAM;
|
|
1177 size_t reasonable_max =
|
|
1178 (size_t) os::allocatable_physical_memory(reasonable_fraction);
|
|
1179 if (reasonable_max > maximum_size) {
|
|
1180 reasonable_max = maximum_size;
|
|
1181 }
|
|
1182 if (PrintGCDetails && Verbose) {
|
|
1183 // Cannot use gclog_or_tty yet.
|
|
1184 tty->print_cr(" Max heap size for server class platform "
|
|
1185 SIZE_FORMAT, reasonable_max);
|
|
1186 }
|
|
1187 // If the initial_heap_size has not been set with -Xms,
|
|
1188 // then set it as fraction of size of physical memory
|
|
1189 // respecting the maximum and minimum sizes of the heap.
|
|
1190 if (initial_heap_size() == 0) {
|
|
1191 const uint64_t reasonable_initial_fraction =
|
|
1192 os::physical_memory() / DefaultInitialRAMFraction;
|
|
1193 const size_t reasonable_initial =
|
|
1194 (size_t) os::allocatable_physical_memory(reasonable_initial_fraction);
|
|
1195 const size_t minimum_size = NewSize + OldSize;
|
|
1196 set_initial_heap_size(MAX2(MIN2(reasonable_initial, reasonable_max),
|
|
1197 minimum_size));
|
|
1198 // Currently the minimum size and the initial heap sizes are the same.
|
|
1199 set_min_heap_size(initial_heap_size());
|
|
1200 if (PrintGCDetails && Verbose) {
|
|
1201 // Cannot use gclog_or_tty yet.
|
|
1202 tty->print_cr(" Initial heap size for server class platform "
|
|
1203 SIZE_FORMAT, initial_heap_size());
|
|
1204 }
|
|
1205 } else {
|
|
1206 // An minimum size was specified on the command line. Be sure
|
|
1207 // that the maximum size is consistent.
|
|
1208 if (initial_heap_size() > reasonable_max) {
|
|
1209 reasonable_max = initial_heap_size();
|
|
1210 }
|
|
1211 }
|
|
1212 FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx) reasonable_max);
|
|
1213 }
|
|
1214
|
|
1215 // If InitialSurvivorRatio or MinSurvivorRatio were not specified, but the
|
|
1216 // SurvivorRatio has been set, reset their default values to SurvivorRatio +
|
|
1217 // 2. By doing this we make SurvivorRatio also work for Parallel Scavenger.
|
|
1218 // See CR 6362902 for details.
|
|
1219 if (!FLAG_IS_DEFAULT(SurvivorRatio)) {
|
|
1220 if (FLAG_IS_DEFAULT(InitialSurvivorRatio)) {
|
|
1221 FLAG_SET_DEFAULT(InitialSurvivorRatio, SurvivorRatio + 2);
|
|
1222 }
|
|
1223 if (FLAG_IS_DEFAULT(MinSurvivorRatio)) {
|
|
1224 FLAG_SET_DEFAULT(MinSurvivorRatio, SurvivorRatio + 2);
|
|
1225 }
|
|
1226 }
|
|
1227
|
|
1228 if (UseParallelOldGC) {
|
|
1229 // Par compact uses lower default values since they are treated as
|
|
1230 // minimums.
|
|
1231 if (FLAG_IS_DEFAULT(MarkSweepDeadRatio)) {
|
|
1232 MarkSweepDeadRatio = 1;
|
|
1233 }
|
|
1234 if (FLAG_IS_DEFAULT(PermMarkSweepDeadRatio)) {
|
|
1235 PermMarkSweepDeadRatio = 5;
|
|
1236 }
|
|
1237 }
|
|
1238 }
|
|
1239 }
|
|
1240
|
|
1241 // This must be called after ergonomics because we want bytecode rewriting
|
|
1242 // if the server compiler is used, or if UseSharedSpaces is disabled.
|
|
1243 void Arguments::set_bytecode_flags() {
|
|
1244 // Better not attempt to store into a read-only space.
|
|
1245 if (UseSharedSpaces) {
|
|
1246 FLAG_SET_DEFAULT(RewriteBytecodes, false);
|
|
1247 FLAG_SET_DEFAULT(RewriteFrequentPairs, false);
|
|
1248 }
|
|
1249
|
|
1250 if (!RewriteBytecodes) {
|
|
1251 FLAG_SET_DEFAULT(RewriteFrequentPairs, false);
|
|
1252 }
|
|
1253 }
|
|
1254
|
|
1255 // Aggressive optimization flags -XX:+AggressiveOpts
|
|
1256 void Arguments::set_aggressive_opts_flags() {
|
|
1257 if (AggressiveOpts) {
|
61
|
1258 // Sample flag setting code
|
|
1259 // if (FLAG_IS_DEFAULT(EliminateZeroing)) {
|
|
1260 // FLAG_SET_DEFAULT(EliminateZeroing, true);
|
|
1261 // }
|
0
|
1262 }
|
|
1263 }
|
|
1264
|
|
1265 //===========================================================================================================
|
|
1266 // Parsing of java.compiler property
|
|
1267
|
|
1268 void Arguments::process_java_compiler_argument(char* arg) {
|
|
1269 // For backwards compatibility, Djava.compiler=NONE or ""
|
|
1270 // causes us to switch to -Xint mode UNLESS -Xdebug
|
|
1271 // is also specified.
|
|
1272 if (strlen(arg) == 0 || strcasecmp(arg, "NONE") == 0) {
|
|
1273 set_java_compiler(true); // "-Djava.compiler[=...]" most recently seen.
|
|
1274 }
|
|
1275 }
|
|
1276
|
|
1277 void Arguments::process_java_launcher_argument(const char* launcher, void* extra_info) {
|
|
1278 _sun_java_launcher = strdup(launcher);
|
|
1279 }
|
|
1280
|
|
1281 bool Arguments::created_by_java_launcher() {
|
|
1282 assert(_sun_java_launcher != NULL, "property must have value");
|
|
1283 return strcmp(DEFAULT_JAVA_LAUNCHER, _sun_java_launcher) != 0;
|
|
1284 }
|
|
1285
|
|
1286 //===========================================================================================================
|
|
1287 // Parsing of main arguments
|
|
1288
|
|
1289 bool Arguments::verify_percentage(uintx value, const char* name) {
|
|
1290 if (value <= 100) {
|
|
1291 return true;
|
|
1292 }
|
|
1293 jio_fprintf(defaultStream::error_stream(),
|
|
1294 "%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n",
|
|
1295 name, value);
|
|
1296 return false;
|
|
1297 }
|
|
1298
|
|
1299 static void set_serial_gc_flags() {
|
|
1300 FLAG_SET_DEFAULT(UseSerialGC, true);
|
|
1301 FLAG_SET_DEFAULT(UseParNewGC, false);
|
|
1302 FLAG_SET_DEFAULT(UseConcMarkSweepGC, false);
|
|
1303 FLAG_SET_DEFAULT(UseParallelGC, false);
|
|
1304 FLAG_SET_DEFAULT(UseParallelOldGC, false);
|
|
1305 }
|
|
1306
|
|
1307 static bool verify_serial_gc_flags() {
|
|
1308 return (UseSerialGC &&
|
|
1309 !(UseParNewGC || UseConcMarkSweepGC || UseParallelGC ||
|
|
1310 UseParallelOldGC));
|
|
1311 }
|
|
1312
|
|
1313 // Check the consistency of vm_init_args
|
|
1314 bool Arguments::check_vm_args_consistency() {
|
|
1315 // Method for adding checks for flag consistency.
|
|
1316 // The intent is to warn the user of all possible conflicts,
|
|
1317 // before returning an error.
|
|
1318 // Note: Needs platform-dependent factoring.
|
|
1319 bool status = true;
|
|
1320
|
|
1321 #if ( (defined(COMPILER2) && defined(SPARC)))
|
|
1322 // NOTE: The call to VM_Version_init depends on the fact that VM_Version_init
|
|
1323 // on sparc doesn't require generation of a stub as is the case on, e.g.,
|
|
1324 // x86. Normally, VM_Version_init must be called from init_globals in
|
|
1325 // init.cpp, which is called by the initial java thread *after* arguments
|
|
1326 // have been parsed. VM_Version_init gets called twice on sparc.
|
|
1327 extern void VM_Version_init();
|
|
1328 VM_Version_init();
|
|
1329 if (!VM_Version::has_v9()) {
|
|
1330 jio_fprintf(defaultStream::error_stream(),
|
|
1331 "V8 Machine detected, Server requires V9\n");
|
|
1332 status = false;
|
|
1333 }
|
|
1334 #endif /* COMPILER2 && SPARC */
|
|
1335
|
|
1336 // Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product
|
|
1337 // builds so the cost of stack banging can be measured.
|
|
1338 #if (defined(PRODUCT) && defined(SOLARIS))
|
|
1339 if (!UseBoundThreads && !UseStackBanging) {
|
|
1340 jio_fprintf(defaultStream::error_stream(),
|
|
1341 "-UseStackBanging conflicts with -UseBoundThreads\n");
|
|
1342
|
|
1343 status = false;
|
|
1344 }
|
|
1345 #endif
|
|
1346
|
|
1347 if (TLABRefillWasteFraction == 0) {
|
|
1348 jio_fprintf(defaultStream::error_stream(),
|
|
1349 "TLABRefillWasteFraction should be a denominator, "
|
|
1350 "not " SIZE_FORMAT "\n",
|
|
1351 TLABRefillWasteFraction);
|
|
1352 status = false;
|
|
1353 }
|
|
1354
|
|
1355 status &= verify_percentage(MaxLiveObjectEvacuationRatio,
|
|
1356 "MaxLiveObjectEvacuationRatio");
|
|
1357 status &= verify_percentage(AdaptiveSizePolicyWeight,
|
|
1358 "AdaptiveSizePolicyWeight");
|
|
1359 status &= verify_percentage(AdaptivePermSizeWeight, "AdaptivePermSizeWeight");
|
|
1360 status &= verify_percentage(ThresholdTolerance, "ThresholdTolerance");
|
|
1361 status &= verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio");
|
|
1362 status &= verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio");
|
|
1363
|
|
1364 if (MinHeapFreeRatio > MaxHeapFreeRatio) {
|
|
1365 jio_fprintf(defaultStream::error_stream(),
|
|
1366 "MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or "
|
|
1367 "equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n",
|
|
1368 MinHeapFreeRatio, MaxHeapFreeRatio);
|
|
1369 status = false;
|
|
1370 }
|
|
1371 // Keeping the heap 100% free is hard ;-) so limit it to 99%.
|
|
1372 MinHeapFreeRatio = MIN2(MinHeapFreeRatio, (uintx) 99);
|
|
1373
|
|
1374 if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) {
|
|
1375 MarkSweepAlwaysCompactCount = 1; // Move objects every gc.
|
|
1376 }
|
|
1377
|
|
1378 status &= verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit");
|
|
1379 status &= verify_percentage(GCTimeLimit, "GCTimeLimit");
|
|
1380 if (GCTimeLimit == 100) {
|
|
1381 // Turn off gc-overhead-limit-exceeded checks
|
|
1382 FLAG_SET_DEFAULT(UseGCOverheadLimit, false);
|
|
1383 }
|
|
1384
|
|
1385 status &= verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit");
|
|
1386
|
|
1387 // Check user specified sharing option conflict with Parallel GC
|
|
1388 bool cannot_share = (UseConcMarkSweepGC || UseParallelGC ||
|
|
1389 UseParallelOldGC || UseParNewGC ||
|
|
1390 SOLARIS_ONLY(UseISM) NOT_SOLARIS(UseLargePages));
|
|
1391
|
|
1392 if (cannot_share) {
|
|
1393 // Either force sharing on by forcing the other options off, or
|
|
1394 // force sharing off.
|
|
1395 if (DumpSharedSpaces || ForceSharedSpaces) {
|
|
1396 set_serial_gc_flags();
|
|
1397 FLAG_SET_DEFAULT(SOLARIS_ONLY(UseISM) NOT_SOLARIS(UseLargePages), false);
|
|
1398 } else {
|
|
1399 no_shared_spaces();
|
|
1400 }
|
|
1401 }
|
|
1402
|
|
1403 // Ensure that the user has not selected conflicting sets
|
|
1404 // of collectors. [Note: this check is merely a user convenience;
|
|
1405 // collectors over-ride each other so that only a non-conflicting
|
|
1406 // set is selected; however what the user gets is not what they
|
|
1407 // may have expected from the combination they asked for. It's
|
|
1408 // better to reduce user confusion by not allowing them to
|
|
1409 // select conflicting combinations.
|
|
1410 uint i = 0;
|
|
1411 if (UseSerialGC) i++;
|
|
1412 if (UseConcMarkSweepGC || UseParNewGC) i++;
|
|
1413 if (UseParallelGC || UseParallelOldGC) i++;
|
|
1414 if (i > 1) {
|
|
1415 jio_fprintf(defaultStream::error_stream(),
|
|
1416 "Conflicting collector combinations in option list; "
|
|
1417 "please refer to the release notes for the combinations "
|
|
1418 "allowed\n");
|
|
1419 status = false;
|
|
1420 }
|
|
1421
|
|
1422 if (_has_alloc_profile) {
|
|
1423 if (UseParallelGC || UseParallelOldGC) {
|
|
1424 jio_fprintf(defaultStream::error_stream(),
|
|
1425 "error: invalid argument combination.\n"
|
|
1426 "Allocation profiling (-Xaprof) cannot be used together with "
|
|
1427 "Parallel GC (-XX:+UseParallelGC or -XX:+UseParallelOldGC).\n");
|
|
1428 status = false;
|
|
1429 }
|
|
1430 if (UseConcMarkSweepGC) {
|
|
1431 jio_fprintf(defaultStream::error_stream(),
|
|
1432 "error: invalid argument combination.\n"
|
|
1433 "Allocation profiling (-Xaprof) cannot be used together with "
|
|
1434 "the CMS collector (-XX:+UseConcMarkSweepGC).\n");
|
|
1435 status = false;
|
|
1436 }
|
|
1437 }
|
|
1438
|
|
1439 if (CMSIncrementalMode) {
|
|
1440 if (!UseConcMarkSweepGC) {
|
|
1441 jio_fprintf(defaultStream::error_stream(),
|
|
1442 "error: invalid argument combination.\n"
|
|
1443 "The CMS collector (-XX:+UseConcMarkSweepGC) must be "
|
|
1444 "selected in order\nto use CMSIncrementalMode.\n");
|
|
1445 status = false;
|
|
1446 } else if (!UseTLAB) {
|
|
1447 jio_fprintf(defaultStream::error_stream(),
|
|
1448 "error: CMSIncrementalMode requires thread-local "
|
|
1449 "allocation buffers\n(-XX:+UseTLAB).\n");
|
|
1450 status = false;
|
|
1451 } else {
|
|
1452 status &= verify_percentage(CMSIncrementalDutyCycle,
|
|
1453 "CMSIncrementalDutyCycle");
|
|
1454 status &= verify_percentage(CMSIncrementalDutyCycleMin,
|
|
1455 "CMSIncrementalDutyCycleMin");
|
|
1456 status &= verify_percentage(CMSIncrementalSafetyFactor,
|
|
1457 "CMSIncrementalSafetyFactor");
|
|
1458 status &= verify_percentage(CMSIncrementalOffset,
|
|
1459 "CMSIncrementalOffset");
|
|
1460 status &= verify_percentage(CMSExpAvgFactor,
|
|
1461 "CMSExpAvgFactor");
|
|
1462 // If it was not set on the command line, set
|
|
1463 // CMSInitiatingOccupancyFraction to 1 so icms can initiate cycles early.
|
|
1464 if (CMSInitiatingOccupancyFraction < 0) {
|
|
1465 FLAG_SET_DEFAULT(CMSInitiatingOccupancyFraction, 1);
|
|
1466 }
|
|
1467 }
|
|
1468 }
|
|
1469
|
|
1470 if (UseNUMA && !UseTLAB) {
|
|
1471 jio_fprintf(defaultStream::error_stream(),
|
|
1472 "error: NUMA allocator (-XX:+UseNUMA) requires thread-local "
|
|
1473 "allocation\nbuffers (-XX:+UseTLAB).\n");
|
|
1474 status = false;
|
|
1475 }
|
|
1476
|
|
1477 // CMS space iteration, which FLSVerifyAllHeapreferences entails,
|
|
1478 // insists that we hold the requisite locks so that the iteration is
|
|
1479 // MT-safe. For the verification at start-up and shut-down, we don't
|
|
1480 // yet have a good way of acquiring and releasing these locks,
|
|
1481 // which are not visible at the CollectedHeap level. We want to
|
|
1482 // be able to acquire these locks and then do the iteration rather
|
|
1483 // than just disable the lock verification. This will be fixed under
|
|
1484 // bug 4788986.
|
|
1485 if (UseConcMarkSweepGC && FLSVerifyAllHeapReferences) {
|
|
1486 if (VerifyGCStartAt == 0) {
|
|
1487 warning("Heap verification at start-up disabled "
|
|
1488 "(due to current incompatibility with FLSVerifyAllHeapReferences)");
|
|
1489 VerifyGCStartAt = 1; // Disable verification at start-up
|
|
1490 }
|
|
1491 if (VerifyBeforeExit) {
|
|
1492 warning("Heap verification at shutdown disabled "
|
|
1493 "(due to current incompatibility with FLSVerifyAllHeapReferences)");
|
|
1494 VerifyBeforeExit = false; // Disable verification at shutdown
|
|
1495 }
|
|
1496 }
|
|
1497
|
|
1498 // Note: only executed in non-PRODUCT mode
|
|
1499 if (!UseAsyncConcMarkSweepGC &&
|
|
1500 (ExplicitGCInvokesConcurrent ||
|
|
1501 ExplicitGCInvokesConcurrentAndUnloadsClasses)) {
|
|
1502 jio_fprintf(defaultStream::error_stream(),
|
|
1503 "error: +ExplictGCInvokesConcurrent[AndUnloadsClasses] conflicts"
|
|
1504 " with -UseAsyncConcMarkSweepGC");
|
|
1505 status = false;
|
|
1506 }
|
|
1507
|
|
1508 return status;
|
|
1509 }
|
|
1510
|
|
1511 bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore,
|
|
1512 const char* option_type) {
|
|
1513 if (ignore) return false;
|
|
1514
|
|
1515 const char* spacer = " ";
|
|
1516 if (option_type == NULL) {
|
|
1517 option_type = ++spacer; // Set both to the empty string.
|
|
1518 }
|
|
1519
|
|
1520 if (os::obsolete_option(option)) {
|
|
1521 jio_fprintf(defaultStream::error_stream(),
|
|
1522 "Obsolete %s%soption: %s\n", option_type, spacer,
|
|
1523 option->optionString);
|
|
1524 return false;
|
|
1525 } else {
|
|
1526 jio_fprintf(defaultStream::error_stream(),
|
|
1527 "Unrecognized %s%soption: %s\n", option_type, spacer,
|
|
1528 option->optionString);
|
|
1529 return true;
|
|
1530 }
|
|
1531 }
|
|
1532
|
|
1533 static const char* user_assertion_options[] = {
|
|
1534 "-da", "-ea", "-disableassertions", "-enableassertions", 0
|
|
1535 };
|
|
1536
|
|
1537 static const char* system_assertion_options[] = {
|
|
1538 "-dsa", "-esa", "-disablesystemassertions", "-enablesystemassertions", 0
|
|
1539 };
|
|
1540
|
|
1541 // Return true if any of the strings in null-terminated array 'names' matches.
|
|
1542 // If tail_allowed is true, then the tail must begin with a colon; otherwise,
|
|
1543 // the option must match exactly.
|
|
1544 static bool match_option(const JavaVMOption* option, const char** names, const char** tail,
|
|
1545 bool tail_allowed) {
|
|
1546 for (/* empty */; *names != NULL; ++names) {
|
|
1547 if (match_option(option, *names, tail)) {
|
|
1548 if (**tail == '\0' || tail_allowed && **tail == ':') {
|
|
1549 return true;
|
|
1550 }
|
|
1551 }
|
|
1552 }
|
|
1553 return false;
|
|
1554 }
|
|
1555
|
|
1556 Arguments::ArgsRange Arguments::parse_memory_size(const char* s,
|
|
1557 jlong* long_arg,
|
|
1558 jlong min_size) {
|
|
1559 if (!atomll(s, long_arg)) return arg_unreadable;
|
|
1560 return check_memory_size(*long_arg, min_size);
|
|
1561 }
|
|
1562
|
|
1563 // Parse JavaVMInitArgs structure
|
|
1564
|
|
1565 jint Arguments::parse_vm_init_args(const JavaVMInitArgs* args) {
|
|
1566 // For components of the system classpath.
|
|
1567 SysClassPath scp(Arguments::get_sysclasspath());
|
|
1568 bool scp_assembly_required = false;
|
|
1569
|
|
1570 // Save default settings for some mode flags
|
|
1571 Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods;
|
|
1572 Arguments::_UseOnStackReplacement = UseOnStackReplacement;
|
|
1573 Arguments::_ClipInlining = ClipInlining;
|
|
1574 Arguments::_BackgroundCompilation = BackgroundCompilation;
|
|
1575 Arguments::_Tier2CompileThreshold = Tier2CompileThreshold;
|
|
1576
|
|
1577 // Parse JAVA_TOOL_OPTIONS environment variable (if present)
|
|
1578 jint result = parse_java_tool_options_environment_variable(&scp, &scp_assembly_required);
|
|
1579 if (result != JNI_OK) {
|
|
1580 return result;
|
|
1581 }
|
|
1582
|
|
1583 // Parse JavaVMInitArgs structure passed in
|
|
1584 result = parse_each_vm_init_arg(args, &scp, &scp_assembly_required, COMMAND_LINE);
|
|
1585 if (result != JNI_OK) {
|
|
1586 return result;
|
|
1587 }
|
|
1588
|
|
1589 // Parse _JAVA_OPTIONS environment variable (if present) (mimics classic VM)
|
|
1590 result = parse_java_options_environment_variable(&scp, &scp_assembly_required);
|
|
1591 if (result != JNI_OK) {
|
|
1592 return result;
|
|
1593 }
|
|
1594
|
|
1595 // Do final processing now that all arguments have been parsed
|
|
1596 result = finalize_vm_init_args(&scp, scp_assembly_required);
|
|
1597 if (result != JNI_OK) {
|
|
1598 return result;
|
|
1599 }
|
|
1600
|
|
1601 return JNI_OK;
|
|
1602 }
|
|
1603
|
|
1604
|
|
1605 jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args,
|
|
1606 SysClassPath* scp_p,
|
|
1607 bool* scp_assembly_required_p,
|
|
1608 FlagValueOrigin origin) {
|
|
1609 // Remaining part of option string
|
|
1610 const char* tail;
|
|
1611
|
|
1612 // iterate over arguments
|
|
1613 for (int index = 0; index < args->nOptions; index++) {
|
|
1614 bool is_absolute_path = false; // for -agentpath vs -agentlib
|
|
1615
|
|
1616 const JavaVMOption* option = args->options + index;
|
|
1617
|
|
1618 if (!match_option(option, "-Djava.class.path", &tail) &&
|
|
1619 !match_option(option, "-Dsun.java.command", &tail) &&
|
|
1620 !match_option(option, "-Dsun.java.launcher", &tail)) {
|
|
1621
|
|
1622 // add all jvm options to the jvm_args string. This string
|
|
1623 // is used later to set the java.vm.args PerfData string constant.
|
|
1624 // the -Djava.class.path and the -Dsun.java.command options are
|
|
1625 // omitted from jvm_args string as each have their own PerfData
|
|
1626 // string constant object.
|
|
1627 build_jvm_args(option->optionString);
|
|
1628 }
|
|
1629
|
|
1630 // -verbose:[class/gc/jni]
|
|
1631 if (match_option(option, "-verbose", &tail)) {
|
|
1632 if (!strcmp(tail, ":class") || !strcmp(tail, "")) {
|
|
1633 FLAG_SET_CMDLINE(bool, TraceClassLoading, true);
|
|
1634 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true);
|
|
1635 } else if (!strcmp(tail, ":gc")) {
|
|
1636 FLAG_SET_CMDLINE(bool, PrintGC, true);
|
|
1637 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true);
|
|
1638 } else if (!strcmp(tail, ":jni")) {
|
|
1639 FLAG_SET_CMDLINE(bool, PrintJNIResolving, true);
|
|
1640 }
|
|
1641 // -da / -ea / -disableassertions / -enableassertions
|
|
1642 // These accept an optional class/package name separated by a colon, e.g.,
|
|
1643 // -da:java.lang.Thread.
|
|
1644 } else if (match_option(option, user_assertion_options, &tail, true)) {
|
|
1645 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e'
|
|
1646 if (*tail == '\0') {
|
|
1647 JavaAssertions::setUserClassDefault(enable);
|
|
1648 } else {
|
|
1649 assert(*tail == ':', "bogus match by match_option()");
|
|
1650 JavaAssertions::addOption(tail + 1, enable);
|
|
1651 }
|
|
1652 // -dsa / -esa / -disablesystemassertions / -enablesystemassertions
|
|
1653 } else if (match_option(option, system_assertion_options, &tail, false)) {
|
|
1654 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e'
|
|
1655 JavaAssertions::setSystemClassDefault(enable);
|
|
1656 // -bootclasspath:
|
|
1657 } else if (match_option(option, "-Xbootclasspath:", &tail)) {
|
|
1658 scp_p->reset_path(tail);
|
|
1659 *scp_assembly_required_p = true;
|
|
1660 // -bootclasspath/a:
|
|
1661 } else if (match_option(option, "-Xbootclasspath/a:", &tail)) {
|
|
1662 scp_p->add_suffix(tail);
|
|
1663 *scp_assembly_required_p = true;
|
|
1664 // -bootclasspath/p:
|
|
1665 } else if (match_option(option, "-Xbootclasspath/p:", &tail)) {
|
|
1666 scp_p->add_prefix(tail);
|
|
1667 *scp_assembly_required_p = true;
|
|
1668 // -Xrun
|
|
1669 } else if (match_option(option, "-Xrun", &tail)) {
|
|
1670 if(tail != NULL) {
|
|
1671 const char* pos = strchr(tail, ':');
|
|
1672 size_t len = (pos == NULL) ? strlen(tail) : pos - tail;
|
|
1673 char* name = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len);
|
|
1674 name[len] = '\0';
|
|
1675
|
|
1676 char *options = NULL;
|
|
1677 if(pos != NULL) {
|
|
1678 size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied.
|
|
1679 options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2), pos+1, len2);
|
|
1680 }
|
|
1681 #ifdef JVMTI_KERNEL
|
|
1682 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) {
|
|
1683 warning("profiling and debugging agents are not supported with Kernel VM");
|
|
1684 } else
|
|
1685 #endif // JVMTI_KERNEL
|
|
1686 add_init_library(name, options);
|
|
1687 }
|
|
1688 // -agentlib and -agentpath
|
|
1689 } else if (match_option(option, "-agentlib:", &tail) ||
|
|
1690 (is_absolute_path = match_option(option, "-agentpath:", &tail))) {
|
|
1691 if(tail != NULL) {
|
|
1692 const char* pos = strchr(tail, '=');
|
|
1693 size_t len = (pos == NULL) ? strlen(tail) : pos - tail;
|
|
1694 char* name = strncpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len);
|
|
1695 name[len] = '\0';
|
|
1696
|
|
1697 char *options = NULL;
|
|
1698 if(pos != NULL) {
|
|
1699 options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1), pos + 1);
|
|
1700 }
|
|
1701 #ifdef JVMTI_KERNEL
|
|
1702 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) {
|
|
1703 warning("profiling and debugging agents are not supported with Kernel VM");
|
|
1704 } else
|
|
1705 #endif // JVMTI_KERNEL
|
|
1706 add_init_agent(name, options, is_absolute_path);
|
|
1707
|
|
1708 }
|
|
1709 // -javaagent
|
|
1710 } else if (match_option(option, "-javaagent:", &tail)) {
|
|
1711 if(tail != NULL) {
|
|
1712 char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1), tail);
|
|
1713 add_init_agent("instrument", options, false);
|
|
1714 }
|
|
1715 // -Xnoclassgc
|
|
1716 } else if (match_option(option, "-Xnoclassgc", &tail)) {
|
|
1717 FLAG_SET_CMDLINE(bool, ClassUnloading, false);
|
|
1718 // -Xincgc: i-CMS
|
|
1719 } else if (match_option(option, "-Xincgc", &tail)) {
|
|
1720 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true);
|
|
1721 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, true);
|
|
1722 // -Xnoincgc: no i-CMS
|
|
1723 } else if (match_option(option, "-Xnoincgc", &tail)) {
|
|
1724 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false);
|
|
1725 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, false);
|
|
1726 // -Xconcgc
|
|
1727 } else if (match_option(option, "-Xconcgc", &tail)) {
|
|
1728 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true);
|
|
1729 // -Xnoconcgc
|
|
1730 } else if (match_option(option, "-Xnoconcgc", &tail)) {
|
|
1731 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false);
|
|
1732 // -Xbatch
|
|
1733 } else if (match_option(option, "-Xbatch", &tail)) {
|
|
1734 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false);
|
|
1735 // -Xmn for compatibility with other JVM vendors
|
|
1736 } else if (match_option(option, "-Xmn", &tail)) {
|
|
1737 jlong long_initial_eden_size = 0;
|
|
1738 ArgsRange errcode = parse_memory_size(tail, &long_initial_eden_size, 1);
|
|
1739 if (errcode != arg_in_range) {
|
|
1740 jio_fprintf(defaultStream::error_stream(),
|
|
1741 "Invalid initial eden size: %s\n", option->optionString);
|
|
1742 describe_range_error(errcode);
|
|
1743 return JNI_EINVAL;
|
|
1744 }
|
|
1745 FLAG_SET_CMDLINE(uintx, MaxNewSize, (size_t) long_initial_eden_size);
|
|
1746 FLAG_SET_CMDLINE(uintx, NewSize, (size_t) long_initial_eden_size);
|
|
1747 // -Xms
|
|
1748 } else if (match_option(option, "-Xms", &tail)) {
|
|
1749 jlong long_initial_heap_size = 0;
|
|
1750 ArgsRange errcode = parse_memory_size(tail, &long_initial_heap_size, 1);
|
|
1751 if (errcode != arg_in_range) {
|
|
1752 jio_fprintf(defaultStream::error_stream(),
|
|
1753 "Invalid initial heap size: %s\n", option->optionString);
|
|
1754 describe_range_error(errcode);
|
|
1755 return JNI_EINVAL;
|
|
1756 }
|
|
1757 set_initial_heap_size((size_t) long_initial_heap_size);
|
|
1758 // Currently the minimum size and the initial heap sizes are the same.
|
|
1759 set_min_heap_size(initial_heap_size());
|
|
1760 // -Xmx
|
|
1761 } else if (match_option(option, "-Xmx", &tail)) {
|
|
1762 jlong long_max_heap_size = 0;
|
|
1763 ArgsRange errcode = parse_memory_size(tail, &long_max_heap_size, 1);
|
|
1764 if (errcode != arg_in_range) {
|
|
1765 jio_fprintf(defaultStream::error_stream(),
|
|
1766 "Invalid maximum heap size: %s\n", option->optionString);
|
|
1767 describe_range_error(errcode);
|
|
1768 return JNI_EINVAL;
|
|
1769 }
|
|
1770 FLAG_SET_CMDLINE(uintx, MaxHeapSize, (size_t) long_max_heap_size);
|
|
1771 // Xmaxf
|
|
1772 } else if (match_option(option, "-Xmaxf", &tail)) {
|
|
1773 int maxf = (int)(atof(tail) * 100);
|
|
1774 if (maxf < 0 || maxf > 100) {
|
|
1775 jio_fprintf(defaultStream::error_stream(),
|
|
1776 "Bad max heap free percentage size: %s\n",
|
|
1777 option->optionString);
|
|
1778 return JNI_EINVAL;
|
|
1779 } else {
|
|
1780 FLAG_SET_CMDLINE(uintx, MaxHeapFreeRatio, maxf);
|
|
1781 }
|
|
1782 // Xminf
|
|
1783 } else if (match_option(option, "-Xminf", &tail)) {
|
|
1784 int minf = (int)(atof(tail) * 100);
|
|
1785 if (minf < 0 || minf > 100) {
|
|
1786 jio_fprintf(defaultStream::error_stream(),
|
|
1787 "Bad min heap free percentage size: %s\n",
|
|
1788 option->optionString);
|
|
1789 return JNI_EINVAL;
|
|
1790 } else {
|
|
1791 FLAG_SET_CMDLINE(uintx, MinHeapFreeRatio, minf);
|
|
1792 }
|
|
1793 // -Xss
|
|
1794 } else if (match_option(option, "-Xss", &tail)) {
|
|
1795 jlong long_ThreadStackSize = 0;
|
|
1796 ArgsRange errcode = parse_memory_size(tail, &long_ThreadStackSize, 1000);
|
|
1797 if (errcode != arg_in_range) {
|
|
1798 jio_fprintf(defaultStream::error_stream(),
|
|
1799 "Invalid thread stack size: %s\n", option->optionString);
|
|
1800 describe_range_error(errcode);
|
|
1801 return JNI_EINVAL;
|
|
1802 }
|
|
1803 // Internally track ThreadStackSize in units of 1024 bytes.
|
|
1804 FLAG_SET_CMDLINE(intx, ThreadStackSize,
|
|
1805 round_to((int)long_ThreadStackSize, K) / K);
|
|
1806 // -Xoss
|
|
1807 } else if (match_option(option, "-Xoss", &tail)) {
|
|
1808 // HotSpot does not have separate native and Java stacks, ignore silently for compatibility
|
|
1809 // -Xmaxjitcodesize
|
|
1810 } else if (match_option(option, "-Xmaxjitcodesize", &tail)) {
|
|
1811 jlong long_ReservedCodeCacheSize = 0;
|
|
1812 ArgsRange errcode = parse_memory_size(tail, &long_ReservedCodeCacheSize,
|
|
1813 InitialCodeCacheSize);
|
|
1814 if (errcode != arg_in_range) {
|
|
1815 jio_fprintf(defaultStream::error_stream(),
|
|
1816 "Invalid maximum code cache size: %s\n",
|
|
1817 option->optionString);
|
|
1818 describe_range_error(errcode);
|
|
1819 return JNI_EINVAL;
|
|
1820 }
|
|
1821 FLAG_SET_CMDLINE(uintx, ReservedCodeCacheSize, (uintx)long_ReservedCodeCacheSize);
|
|
1822 // -green
|
|
1823 } else if (match_option(option, "-green", &tail)) {
|
|
1824 jio_fprintf(defaultStream::error_stream(),
|
|
1825 "Green threads support not available\n");
|
|
1826 return JNI_EINVAL;
|
|
1827 // -native
|
|
1828 } else if (match_option(option, "-native", &tail)) {
|
|
1829 // HotSpot always uses native threads, ignore silently for compatibility
|
|
1830 // -Xsqnopause
|
|
1831 } else if (match_option(option, "-Xsqnopause", &tail)) {
|
|
1832 // EVM option, ignore silently for compatibility
|
|
1833 // -Xrs
|
|
1834 } else if (match_option(option, "-Xrs", &tail)) {
|
|
1835 // Classic/EVM option, new functionality
|
|
1836 FLAG_SET_CMDLINE(bool, ReduceSignalUsage, true);
|
|
1837 } else if (match_option(option, "-Xusealtsigs", &tail)) {
|
|
1838 // change default internal VM signals used - lower case for back compat
|
|
1839 FLAG_SET_CMDLINE(bool, UseAltSigs, true);
|
|
1840 // -Xoptimize
|
|
1841 } else if (match_option(option, "-Xoptimize", &tail)) {
|
|
1842 // EVM option, ignore silently for compatibility
|
|
1843 // -Xprof
|
|
1844 } else if (match_option(option, "-Xprof", &tail)) {
|
|
1845 #ifndef FPROF_KERNEL
|
|
1846 _has_profile = true;
|
|
1847 #else // FPROF_KERNEL
|
|
1848 // do we have to exit?
|
|
1849 warning("Kernel VM does not support flat profiling.");
|
|
1850 #endif // FPROF_KERNEL
|
|
1851 // -Xaprof
|
|
1852 } else if (match_option(option, "-Xaprof", &tail)) {
|
|
1853 _has_alloc_profile = true;
|
|
1854 // -Xconcurrentio
|
|
1855 } else if (match_option(option, "-Xconcurrentio", &tail)) {
|
|
1856 FLAG_SET_CMDLINE(bool, UseLWPSynchronization, true);
|
|
1857 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false);
|
|
1858 FLAG_SET_CMDLINE(intx, DeferThrSuspendLoopCount, 1);
|
|
1859 FLAG_SET_CMDLINE(bool, UseTLAB, false);
|
|
1860 FLAG_SET_CMDLINE(uintx, NewSizeThreadIncrease, 16 * K); // 20Kb per thread added to new generation
|
|
1861
|
|
1862 // -Xinternalversion
|
|
1863 } else if (match_option(option, "-Xinternalversion", &tail)) {
|
|
1864 jio_fprintf(defaultStream::output_stream(), "%s\n",
|
|
1865 VM_Version::internal_vm_info_string());
|
|
1866 vm_exit(0);
|
|
1867 #ifndef PRODUCT
|
|
1868 // -Xprintflags
|
|
1869 } else if (match_option(option, "-Xprintflags", &tail)) {
|
|
1870 CommandLineFlags::printFlags();
|
|
1871 vm_exit(0);
|
|
1872 #endif
|
|
1873 // -D
|
|
1874 } else if (match_option(option, "-D", &tail)) {
|
|
1875 if (!add_property(tail)) {
|
|
1876 return JNI_ENOMEM;
|
|
1877 }
|
|
1878 // Out of the box management support
|
|
1879 if (match_option(option, "-Dcom.sun.management", &tail)) {
|
|
1880 FLAG_SET_CMDLINE(bool, ManagementServer, true);
|
|
1881 }
|
|
1882 // -Xint
|
|
1883 } else if (match_option(option, "-Xint", &tail)) {
|
|
1884 set_mode_flags(_int);
|
|
1885 // -Xmixed
|
|
1886 } else if (match_option(option, "-Xmixed", &tail)) {
|
|
1887 set_mode_flags(_mixed);
|
|
1888 // -Xcomp
|
|
1889 } else if (match_option(option, "-Xcomp", &tail)) {
|
|
1890 // for testing the compiler; turn off all flags that inhibit compilation
|
|
1891 set_mode_flags(_comp);
|
|
1892
|
|
1893 // -Xshare:dump
|
|
1894 } else if (match_option(option, "-Xshare:dump", &tail)) {
|
|
1895 #ifdef TIERED
|
|
1896 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true);
|
|
1897 set_mode_flags(_int); // Prevent compilation, which creates objects
|
|
1898 #elif defined(COMPILER2)
|
|
1899 vm_exit_during_initialization(
|
|
1900 "Dumping a shared archive is not supported on the Server JVM.", NULL);
|
|
1901 #elif defined(KERNEL)
|
|
1902 vm_exit_during_initialization(
|
|
1903 "Dumping a shared archive is not supported on the Kernel JVM.", NULL);
|
|
1904 #else
|
|
1905 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true);
|
|
1906 set_mode_flags(_int); // Prevent compilation, which creates objects
|
|
1907 #endif
|
|
1908 // -Xshare:on
|
|
1909 } else if (match_option(option, "-Xshare:on", &tail)) {
|
|
1910 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true);
|
|
1911 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, true);
|
|
1912 #ifdef TIERED
|
|
1913 FLAG_SET_CMDLINE(bool, ForceSharedSpaces, true);
|
|
1914 #endif // TIERED
|
|
1915 // -Xshare:auto
|
|
1916 } else if (match_option(option, "-Xshare:auto", &tail)) {
|
|
1917 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true);
|
|
1918 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false);
|
|
1919 // -Xshare:off
|
|
1920 } else if (match_option(option, "-Xshare:off", &tail)) {
|
|
1921 FLAG_SET_CMDLINE(bool, UseSharedSpaces, false);
|
|
1922 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false);
|
|
1923
|
|
1924 // -Xverify
|
|
1925 } else if (match_option(option, "-Xverify", &tail)) {
|
|
1926 if (strcmp(tail, ":all") == 0 || strcmp(tail, "") == 0) {
|
|
1927 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, true);
|
|
1928 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true);
|
|
1929 } else if (strcmp(tail, ":remote") == 0) {
|
|
1930 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false);
|
|
1931 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true);
|
|
1932 } else if (strcmp(tail, ":none") == 0) {
|
|
1933 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false);
|
|
1934 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, false);
|
|
1935 } else if (is_bad_option(option, args->ignoreUnrecognized, "verification")) {
|
|
1936 return JNI_EINVAL;
|
|
1937 }
|
|
1938 // -Xdebug
|
|
1939 } else if (match_option(option, "-Xdebug", &tail)) {
|
|
1940 // note this flag has been used, then ignore
|
|
1941 set_xdebug_mode(true);
|
|
1942 // -Xnoagent
|
|
1943 } else if (match_option(option, "-Xnoagent", &tail)) {
|
|
1944 // For compatibility with classic. HotSpot refuses to load the old style agent.dll.
|
|
1945 } else if (match_option(option, "-Xboundthreads", &tail)) {
|
|
1946 // Bind user level threads to kernel threads (Solaris only)
|
|
1947 FLAG_SET_CMDLINE(bool, UseBoundThreads, true);
|
|
1948 } else if (match_option(option, "-Xloggc:", &tail)) {
|
|
1949 // Redirect GC output to the file. -Xloggc:<filename>
|
|
1950 // ostream_init_log(), when called will use this filename
|
|
1951 // to initialize a fileStream.
|
|
1952 _gc_log_filename = strdup(tail);
|
|
1953 FLAG_SET_CMDLINE(bool, PrintGC, true);
|
|
1954 FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true);
|
|
1955 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true);
|
|
1956
|
|
1957 // JNI hooks
|
|
1958 } else if (match_option(option, "-Xcheck", &tail)) {
|
|
1959 if (!strcmp(tail, ":jni")) {
|
|
1960 CheckJNICalls = true;
|
|
1961 } else if (is_bad_option(option, args->ignoreUnrecognized,
|
|
1962 "check")) {
|
|
1963 return JNI_EINVAL;
|
|
1964 }
|
|
1965 } else if (match_option(option, "vfprintf", &tail)) {
|
|
1966 _vfprintf_hook = CAST_TO_FN_PTR(vfprintf_hook_t, option->extraInfo);
|
|
1967 } else if (match_option(option, "exit", &tail)) {
|
|
1968 _exit_hook = CAST_TO_FN_PTR(exit_hook_t, option->extraInfo);
|
|
1969 } else if (match_option(option, "abort", &tail)) {
|
|
1970 _abort_hook = CAST_TO_FN_PTR(abort_hook_t, option->extraInfo);
|
|
1971 // -XX:+AggressiveHeap
|
|
1972 } else if (match_option(option, "-XX:+AggressiveHeap", &tail)) {
|
|
1973
|
|
1974 // This option inspects the machine and attempts to set various
|
|
1975 // parameters to be optimal for long-running, memory allocation
|
|
1976 // intensive jobs. It is intended for machines with large
|
|
1977 // amounts of cpu and memory.
|
|
1978
|
|
1979 // initHeapSize is needed since _initial_heap_size is 4 bytes on a 32 bit
|
|
1980 // VM, but we may not be able to represent the total physical memory
|
|
1981 // available (like having 8gb of memory on a box but using a 32bit VM).
|
|
1982 // Thus, we need to make sure we're using a julong for intermediate
|
|
1983 // calculations.
|
|
1984 julong initHeapSize;
|
|
1985 julong total_memory = os::physical_memory();
|
|
1986
|
|
1987 if (total_memory < (julong)256*M) {
|
|
1988 jio_fprintf(defaultStream::error_stream(),
|
|
1989 "You need at least 256mb of memory to use -XX:+AggressiveHeap\n");
|
|
1990 vm_exit(1);
|
|
1991 }
|
|
1992
|
|
1993 // The heap size is half of available memory, or (at most)
|
|
1994 // all of possible memory less 160mb (leaving room for the OS
|
|
1995 // when using ISM). This is the maximum; because adaptive sizing
|
|
1996 // is turned on below, the actual space used may be smaller.
|
|
1997
|
|
1998 initHeapSize = MIN2(total_memory / (julong)2,
|
|
1999 total_memory - (julong)160*M);
|
|
2000
|
|
2001 // Make sure that if we have a lot of memory we cap the 32 bit
|
|
2002 // process space. The 64bit VM version of this function is a nop.
|
|
2003 initHeapSize = os::allocatable_physical_memory(initHeapSize);
|
|
2004
|
|
2005 // The perm gen is separate but contiguous with the
|
|
2006 // object heap (and is reserved with it) so subtract it
|
|
2007 // from the heap size.
|
|
2008 if (initHeapSize > MaxPermSize) {
|
|
2009 initHeapSize = initHeapSize - MaxPermSize;
|
|
2010 } else {
|
|
2011 warning("AggressiveHeap and MaxPermSize values may conflict");
|
|
2012 }
|
|
2013
|
|
2014 if (FLAG_IS_DEFAULT(MaxHeapSize)) {
|
|
2015 FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize);
|
|
2016 set_initial_heap_size(MaxHeapSize);
|
|
2017 // Currently the minimum size and the initial heap sizes are the same.
|
|
2018 set_min_heap_size(initial_heap_size());
|
|
2019 }
|
|
2020 if (FLAG_IS_DEFAULT(NewSize)) {
|
|
2021 // Make the young generation 3/8ths of the total heap.
|
|
2022 FLAG_SET_CMDLINE(uintx, NewSize,
|
|
2023 ((julong)MaxHeapSize / (julong)8) * (julong)3);
|
|
2024 FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize);
|
|
2025 }
|
|
2026
|
|
2027 FLAG_SET_DEFAULT(UseLargePages, true);
|
|
2028
|
|
2029 // Increase some data structure sizes for efficiency
|
|
2030 FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize);
|
|
2031 FLAG_SET_CMDLINE(bool, ResizeTLAB, false);
|
|
2032 FLAG_SET_CMDLINE(uintx, TLABSize, 256*K);
|
|
2033
|
|
2034 // See the OldPLABSize comment below, but replace 'after promotion'
|
|
2035 // with 'after copying'. YoungPLABSize is the size of the survivor
|
|
2036 // space per-gc-thread buffers. The default is 4kw.
|
|
2037 FLAG_SET_CMDLINE(uintx, YoungPLABSize, 256*K); // Note: this is in words
|
|
2038
|
|
2039 // OldPLABSize is the size of the buffers in the old gen that
|
|
2040 // UseParallelGC uses to promote live data that doesn't fit in the
|
|
2041 // survivor spaces. At any given time, there's one for each gc thread.
|
|
2042 // The default size is 1kw. These buffers are rarely used, since the
|
|
2043 // survivor spaces are usually big enough. For specjbb, however, there
|
|
2044 // are occasions when there's lots of live data in the young gen
|
|
2045 // and we end up promoting some of it. We don't have a definite
|
|
2046 // explanation for why bumping OldPLABSize helps, but the theory
|
|
2047 // is that a bigger PLAB results in retaining something like the
|
|
2048 // original allocation order after promotion, which improves mutator
|
|
2049 // locality. A minor effect may be that larger PLABs reduce the
|
|
2050 // number of PLAB allocation events during gc. The value of 8kw
|
|
2051 // was arrived at by experimenting with specjbb.
|
|
2052 FLAG_SET_CMDLINE(uintx, OldPLABSize, 8*K); // Note: this is in words
|
|
2053
|
|
2054 // CompilationPolicyChoice=0 causes the server compiler to adopt
|
|
2055 // a more conservative which-method-do-I-compile policy when one
|
|
2056 // of the counters maintained by the interpreter trips. The
|
|
2057 // result is reduced startup time and improved specjbb and
|
|
2058 // alacrity performance. Zero is the default, but we set it
|
|
2059 // explicitly here in case the default changes.
|
|
2060 // See runtime/compilationPolicy.*.
|
|
2061 FLAG_SET_CMDLINE(intx, CompilationPolicyChoice, 0);
|
|
2062
|
|
2063 // Enable parallel GC and adaptive generation sizing
|
|
2064 FLAG_SET_CMDLINE(bool, UseParallelGC, true);
|
|
2065 FLAG_SET_DEFAULT(ParallelGCThreads, nof_parallel_gc_threads());
|
|
2066
|
|
2067 // Encourage steady state memory management
|
|
2068 FLAG_SET_CMDLINE(uintx, ThresholdTolerance, 100);
|
|
2069
|
|
2070 // This appears to improve mutator locality
|
|
2071 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false);
|
|
2072
|
|
2073 // Get around early Solaris scheduling bug
|
|
2074 // (affinity vs other jobs on system)
|
|
2075 // but disallow DR and offlining (5008695).
|
|
2076 FLAG_SET_CMDLINE(bool, BindGCTaskThreadsToCPUs, true);
|
|
2077
|
|
2078 } else if (match_option(option, "-XX:+NeverTenure", &tail)) {
|
|
2079 // The last option must always win.
|
|
2080 FLAG_SET_CMDLINE(bool, AlwaysTenure, false);
|
|
2081 FLAG_SET_CMDLINE(bool, NeverTenure, true);
|
|
2082 } else if (match_option(option, "-XX:+AlwaysTenure", &tail)) {
|
|
2083 // The last option must always win.
|
|
2084 FLAG_SET_CMDLINE(bool, NeverTenure, false);
|
|
2085 FLAG_SET_CMDLINE(bool, AlwaysTenure, true);
|
|
2086 } else if (match_option(option, "-XX:+CMSPermGenSweepingEnabled", &tail) ||
|
|
2087 match_option(option, "-XX:-CMSPermGenSweepingEnabled", &tail)) {
|
|
2088 jio_fprintf(defaultStream::error_stream(),
|
|
2089 "Please use CMSClassUnloadingEnabled in place of "
|
|
2090 "CMSPermGenSweepingEnabled in the future\n");
|
|
2091 } else if (match_option(option, "-XX:+UseGCTimeLimit", &tail)) {
|
|
2092 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, true);
|
|
2093 jio_fprintf(defaultStream::error_stream(),
|
|
2094 "Please use -XX:+UseGCOverheadLimit in place of "
|
|
2095 "-XX:+UseGCTimeLimit in the future\n");
|
|
2096 } else if (match_option(option, "-XX:-UseGCTimeLimit", &tail)) {
|
|
2097 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, false);
|
|
2098 jio_fprintf(defaultStream::error_stream(),
|
|
2099 "Please use -XX:-UseGCOverheadLimit in place of "
|
|
2100 "-XX:-UseGCTimeLimit in the future\n");
|
|
2101 // The TLE options are for compatibility with 1.3 and will be
|
|
2102 // removed without notice in a future release. These options
|
|
2103 // are not to be documented.
|
|
2104 } else if (match_option(option, "-XX:MaxTLERatio=", &tail)) {
|
|
2105 // No longer used.
|
|
2106 } else if (match_option(option, "-XX:+ResizeTLE", &tail)) {
|
|
2107 FLAG_SET_CMDLINE(bool, ResizeTLAB, true);
|
|
2108 } else if (match_option(option, "-XX:-ResizeTLE", &tail)) {
|
|
2109 FLAG_SET_CMDLINE(bool, ResizeTLAB, false);
|
|
2110 } else if (match_option(option, "-XX:+PrintTLE", &tail)) {
|
|
2111 FLAG_SET_CMDLINE(bool, PrintTLAB, true);
|
|
2112 } else if (match_option(option, "-XX:-PrintTLE", &tail)) {
|
|
2113 FLAG_SET_CMDLINE(bool, PrintTLAB, false);
|
|
2114 } else if (match_option(option, "-XX:TLEFragmentationRatio=", &tail)) {
|
|
2115 // No longer used.
|
|
2116 } else if (match_option(option, "-XX:TLESize=", &tail)) {
|
|
2117 jlong long_tlab_size = 0;
|
|
2118 ArgsRange errcode = parse_memory_size(tail, &long_tlab_size, 1);
|
|
2119 if (errcode != arg_in_range) {
|
|
2120 jio_fprintf(defaultStream::error_stream(),
|
|
2121 "Invalid TLAB size: %s\n", option->optionString);
|
|
2122 describe_range_error(errcode);
|
|
2123 return JNI_EINVAL;
|
|
2124 }
|
|
2125 FLAG_SET_CMDLINE(uintx, TLABSize, long_tlab_size);
|
|
2126 } else if (match_option(option, "-XX:TLEThreadRatio=", &tail)) {
|
|
2127 // No longer used.
|
|
2128 } else if (match_option(option, "-XX:+UseTLE", &tail)) {
|
|
2129 FLAG_SET_CMDLINE(bool, UseTLAB, true);
|
|
2130 } else if (match_option(option, "-XX:-UseTLE", &tail)) {
|
|
2131 FLAG_SET_CMDLINE(bool, UseTLAB, false);
|
|
2132 SOLARIS_ONLY(
|
|
2133 } else if (match_option(option, "-XX:+UsePermISM", &tail)) {
|
|
2134 warning("-XX:+UsePermISM is obsolete.");
|
|
2135 FLAG_SET_CMDLINE(bool, UseISM, true);
|
|
2136 } else if (match_option(option, "-XX:-UsePermISM", &tail)) {
|
|
2137 FLAG_SET_CMDLINE(bool, UseISM, false);
|
|
2138 )
|
|
2139 } else if (match_option(option, "-XX:+DisplayVMOutputToStderr", &tail)) {
|
|
2140 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, false);
|
|
2141 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, true);
|
|
2142 } else if (match_option(option, "-XX:+DisplayVMOutputToStdout", &tail)) {
|
|
2143 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, false);
|
|
2144 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, true);
|
|
2145 } else if (match_option(option, "-XX:+ExtendedDTraceProbes", &tail)) {
|
|
2146 #ifdef SOLARIS
|
|
2147 FLAG_SET_CMDLINE(bool, ExtendedDTraceProbes, true);
|
|
2148 FLAG_SET_CMDLINE(bool, DTraceMethodProbes, true);
|
|
2149 FLAG_SET_CMDLINE(bool, DTraceAllocProbes, true);
|
|
2150 FLAG_SET_CMDLINE(bool, DTraceMonitorProbes, true);
|
|
2151 #else // ndef SOLARIS
|
|
2152 jio_fprintf(defaultStream::error_stream(),
|
|
2153 "ExtendedDTraceProbes flag is only applicable on Solaris\n");
|
|
2154 return JNI_EINVAL;
|
|
2155 #endif // ndef SOLARIS
|
|
2156 } else
|
|
2157 #ifdef ASSERT
|
|
2158 if (match_option(option, "-XX:+FullGCALot", &tail)) {
|
|
2159 FLAG_SET_CMDLINE(bool, FullGCALot, true);
|
|
2160 // disable scavenge before parallel mark-compact
|
|
2161 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false);
|
|
2162 } else
|
|
2163 #endif
|
|
2164 if (match_option(option, "-XX:ParCMSPromoteBlocksToClaim=", &tail)) {
|
|
2165 julong cms_blocks_to_claim = (julong)atol(tail);
|
|
2166 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim);
|
|
2167 jio_fprintf(defaultStream::error_stream(),
|
|
2168 "Please use -XX:CMSParPromoteBlocksToClaim in place of "
|
|
2169 "-XX:ParCMSPromoteBlocksToClaim in the future\n");
|
|
2170 } else
|
|
2171 if (match_option(option, "-XX:ParallelGCOldGenAllocBufferSize=", &tail)) {
|
|
2172 jlong old_plab_size = 0;
|
|
2173 ArgsRange errcode = parse_memory_size(tail, &old_plab_size, 1);
|
|
2174 if (errcode != arg_in_range) {
|
|
2175 jio_fprintf(defaultStream::error_stream(),
|
|
2176 "Invalid old PLAB size: %s\n", option->optionString);
|
|
2177 describe_range_error(errcode);
|
|
2178 return JNI_EINVAL;
|
|
2179 }
|
|
2180 FLAG_SET_CMDLINE(uintx, OldPLABSize, (julong)old_plab_size);
|
|
2181 jio_fprintf(defaultStream::error_stream(),
|
|
2182 "Please use -XX:OldPLABSize in place of "
|
|
2183 "-XX:ParallelGCOldGenAllocBufferSize in the future\n");
|
|
2184 } else
|
|
2185 if (match_option(option, "-XX:ParallelGCToSpaceAllocBufferSize=", &tail)) {
|
|
2186 jlong young_plab_size = 0;
|
|
2187 ArgsRange errcode = parse_memory_size(tail, &young_plab_size, 1);
|
|
2188 if (errcode != arg_in_range) {
|
|
2189 jio_fprintf(defaultStream::error_stream(),
|
|
2190 "Invalid young PLAB size: %s\n", option->optionString);
|
|
2191 describe_range_error(errcode);
|
|
2192 return JNI_EINVAL;
|
|
2193 }
|
|
2194 FLAG_SET_CMDLINE(uintx, YoungPLABSize, (julong)young_plab_size);
|
|
2195 jio_fprintf(defaultStream::error_stream(),
|
|
2196 "Please use -XX:YoungPLABSize in place of "
|
|
2197 "-XX:ParallelGCToSpaceAllocBufferSize in the future\n");
|
|
2198 } else
|
|
2199 if (match_option(option, "-XX:", &tail)) { // -XX:xxxx
|
|
2200 // Skip -XX:Flags= since that case has already been handled
|
|
2201 if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) {
|
|
2202 if (!process_argument(tail, args->ignoreUnrecognized, origin)) {
|
|
2203 return JNI_EINVAL;
|
|
2204 }
|
|
2205 }
|
|
2206 // Unknown option
|
|
2207 } else if (is_bad_option(option, args->ignoreUnrecognized)) {
|
|
2208 return JNI_ERR;
|
|
2209 }
|
|
2210 }
|
|
2211
|
|
2212 return JNI_OK;
|
|
2213 }
|
|
2214
|
|
2215 jint Arguments::finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required) {
|
|
2216 // This must be done after all -D arguments have been processed.
|
|
2217 scp_p->expand_endorsed();
|
|
2218
|
|
2219 if (scp_assembly_required || scp_p->get_endorsed() != NULL) {
|
|
2220 // Assemble the bootclasspath elements into the final path.
|
|
2221 Arguments::set_sysclasspath(scp_p->combined_path());
|
|
2222 }
|
|
2223
|
|
2224 // This must be done after all arguments have been processed.
|
|
2225 // java_compiler() true means set to "NONE" or empty.
|
|
2226 if (java_compiler() && !xdebug_mode()) {
|
|
2227 // For backwards compatibility, we switch to interpreted mode if
|
|
2228 // -Djava.compiler="NONE" or "" is specified AND "-Xdebug" was
|
|
2229 // not specified.
|
|
2230 set_mode_flags(_int);
|
|
2231 }
|
|
2232 if (CompileThreshold == 0) {
|
|
2233 set_mode_flags(_int);
|
|
2234 }
|
|
2235
|
|
2236 #ifdef TIERED
|
|
2237 // If we are using tiered compilation in the tiered vm then c1 will
|
|
2238 // do the profiling and we don't want to waste that time in the
|
|
2239 // interpreter.
|
|
2240 if (TieredCompilation) {
|
|
2241 ProfileInterpreter = false;
|
|
2242 } else {
|
|
2243 // Since we are running vanilla server we must adjust the compile threshold
|
|
2244 // unless the user has already adjusted it because the default threshold assumes
|
|
2245 // we will run tiered.
|
|
2246
|
|
2247 if (FLAG_IS_DEFAULT(CompileThreshold)) {
|
|
2248 CompileThreshold = Tier2CompileThreshold;
|
|
2249 }
|
|
2250 }
|
|
2251 #endif // TIERED
|
|
2252
|
|
2253 #ifndef COMPILER2
|
|
2254 // Don't degrade server performance for footprint
|
|
2255 if (FLAG_IS_DEFAULT(UseLargePages) &&
|
|
2256 MaxHeapSize < LargePageHeapSizeThreshold) {
|
|
2257 // No need for large granularity pages w/small heaps.
|
|
2258 // Note that large pages are enabled/disabled for both the
|
|
2259 // Java heap and the code cache.
|
|
2260 FLAG_SET_DEFAULT(UseLargePages, false);
|
|
2261 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseMPSS, false));
|
|
2262 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseISM, false));
|
|
2263 }
|
|
2264 #else
|
|
2265 if (!FLAG_IS_DEFAULT(OptoLoopAlignment) && FLAG_IS_DEFAULT(MaxLoopPad)) {
|
|
2266 FLAG_SET_DEFAULT(MaxLoopPad, OptoLoopAlignment-1);
|
|
2267 }
|
|
2268 #endif
|
|
2269
|
|
2270 if (!check_vm_args_consistency()) {
|
|
2271 return JNI_ERR;
|
|
2272 }
|
|
2273
|
|
2274 return JNI_OK;
|
|
2275 }
|
|
2276
|
|
2277 jint Arguments::parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) {
|
|
2278 return parse_options_environment_variable("_JAVA_OPTIONS", scp_p,
|
|
2279 scp_assembly_required_p);
|
|
2280 }
|
|
2281
|
|
2282 jint Arguments::parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) {
|
|
2283 return parse_options_environment_variable("JAVA_TOOL_OPTIONS", scp_p,
|
|
2284 scp_assembly_required_p);
|
|
2285 }
|
|
2286
|
|
2287 jint Arguments::parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p) {
|
|
2288 const int N_MAX_OPTIONS = 64;
|
|
2289 const int OPTION_BUFFER_SIZE = 1024;
|
|
2290 char buffer[OPTION_BUFFER_SIZE];
|
|
2291
|
|
2292 // The variable will be ignored if it exceeds the length of the buffer.
|
|
2293 // Don't check this variable if user has special privileges
|
|
2294 // (e.g. unix su command).
|
|
2295 if (os::getenv(name, buffer, sizeof(buffer)) &&
|
|
2296 !os::have_special_privileges()) {
|
|
2297 JavaVMOption options[N_MAX_OPTIONS]; // Construct option array
|
|
2298 jio_fprintf(defaultStream::error_stream(),
|
|
2299 "Picked up %s: %s\n", name, buffer);
|
|
2300 char* rd = buffer; // pointer to the input string (rd)
|
|
2301 int i;
|
|
2302 for (i = 0; i < N_MAX_OPTIONS;) { // repeat for all options in the input string
|
|
2303 while (isspace(*rd)) rd++; // skip whitespace
|
|
2304 if (*rd == 0) break; // we re done when the input string is read completely
|
|
2305
|
|
2306 // The output, option string, overwrites the input string.
|
|
2307 // Because of quoting, the pointer to the option string (wrt) may lag the pointer to
|
|
2308 // input string (rd).
|
|
2309 char* wrt = rd;
|
|
2310
|
|
2311 options[i++].optionString = wrt; // Fill in option
|
|
2312 while (*rd != 0 && !isspace(*rd)) { // unquoted strings terminate with a space or NULL
|
|
2313 if (*rd == '\'' || *rd == '"') { // handle a quoted string
|
|
2314 int quote = *rd; // matching quote to look for
|
|
2315 rd++; // don't copy open quote
|
|
2316 while (*rd != quote) { // include everything (even spaces) up until quote
|
|
2317 if (*rd == 0) { // string termination means unmatched string
|
|
2318 jio_fprintf(defaultStream::error_stream(),
|
|
2319 "Unmatched quote in %s\n", name);
|
|
2320 return JNI_ERR;
|
|
2321 }
|
|
2322 *wrt++ = *rd++; // copy to option string
|
|
2323 }
|
|
2324 rd++; // don't copy close quote
|
|
2325 } else {
|
|
2326 *wrt++ = *rd++; // copy to option string
|
|
2327 }
|
|
2328 }
|
|
2329 // Need to check if we're done before writing a NULL,
|
|
2330 // because the write could be to the byte that rd is pointing to.
|
|
2331 if (*rd++ == 0) {
|
|
2332 *wrt = 0;
|
|
2333 break;
|
|
2334 }
|
|
2335 *wrt = 0; // Zero terminate option
|
|
2336 }
|
|
2337 // Construct JavaVMInitArgs structure and parse as if it was part of the command line
|
|
2338 JavaVMInitArgs vm_args;
|
|
2339 vm_args.version = JNI_VERSION_1_2;
|
|
2340 vm_args.options = options;
|
|
2341 vm_args.nOptions = i;
|
|
2342 vm_args.ignoreUnrecognized = false;
|
|
2343
|
|
2344 if (PrintVMOptions) {
|
|
2345 const char* tail;
|
|
2346 for (int i = 0; i < vm_args.nOptions; i++) {
|
|
2347 const JavaVMOption *option = vm_args.options + i;
|
|
2348 if (match_option(option, "-XX:", &tail)) {
|
|
2349 logOption(tail);
|
|
2350 }
|
|
2351 }
|
|
2352 }
|
|
2353
|
|
2354 return(parse_each_vm_init_arg(&vm_args, scp_p, scp_assembly_required_p, ENVIRON_VAR));
|
|
2355 }
|
|
2356 return JNI_OK;
|
|
2357 }
|
|
2358
|
|
2359 // Parse entry point called from JNI_CreateJavaVM
|
|
2360
|
|
2361 jint Arguments::parse(const JavaVMInitArgs* args) {
|
|
2362
|
|
2363 // Sharing support
|
|
2364 // Construct the path to the archive
|
|
2365 char jvm_path[JVM_MAXPATHLEN];
|
|
2366 os::jvm_path(jvm_path, sizeof(jvm_path));
|
|
2367 #ifdef TIERED
|
|
2368 if (strstr(jvm_path, "client") != NULL) {
|
|
2369 force_client_mode = true;
|
|
2370 }
|
|
2371 #endif // TIERED
|
|
2372 char *end = strrchr(jvm_path, *os::file_separator());
|
|
2373 if (end != NULL) *end = '\0';
|
|
2374 char *shared_archive_path = NEW_C_HEAP_ARRAY(char, strlen(jvm_path) +
|
|
2375 strlen(os::file_separator()) + 20);
|
|
2376 if (shared_archive_path == NULL) return JNI_ENOMEM;
|
|
2377 strcpy(shared_archive_path, jvm_path);
|
|
2378 strcat(shared_archive_path, os::file_separator());
|
|
2379 strcat(shared_archive_path, "classes");
|
|
2380 DEBUG_ONLY(strcat(shared_archive_path, "_g");)
|
|
2381 strcat(shared_archive_path, ".jsa");
|
|
2382 SharedArchivePath = shared_archive_path;
|
|
2383
|
|
2384 // Remaining part of option string
|
|
2385 const char* tail;
|
|
2386
|
|
2387 // If flag "-XX:Flags=flags-file" is used it will be the first option to be processed.
|
|
2388 bool settings_file_specified = false;
|
|
2389 int index;
|
|
2390 for (index = 0; index < args->nOptions; index++) {
|
|
2391 const JavaVMOption *option = args->options + index;
|
|
2392 if (match_option(option, "-XX:Flags=", &tail)) {
|
|
2393 if (!process_settings_file(tail, true, args->ignoreUnrecognized)) {
|
|
2394 return JNI_EINVAL;
|
|
2395 }
|
|
2396 settings_file_specified = true;
|
|
2397 }
|
|
2398 if (match_option(option, "-XX:+PrintVMOptions", &tail)) {
|
|
2399 PrintVMOptions = true;
|
|
2400 }
|
|
2401 }
|
|
2402
|
|
2403 // Parse default .hotspotrc settings file
|
|
2404 if (!settings_file_specified) {
|
|
2405 if (!process_settings_file(".hotspotrc", false, args->ignoreUnrecognized)) {
|
|
2406 return JNI_EINVAL;
|
|
2407 }
|
|
2408 }
|
|
2409
|
|
2410 if (PrintVMOptions) {
|
|
2411 for (index = 0; index < args->nOptions; index++) {
|
|
2412 const JavaVMOption *option = args->options + index;
|
|
2413 if (match_option(option, "-XX:", &tail)) {
|
|
2414 logOption(tail);
|
|
2415 }
|
|
2416 }
|
|
2417 }
|
|
2418
|
|
2419 // Parse JavaVMInitArgs structure passed in, as well as JAVA_TOOL_OPTIONS and _JAVA_OPTIONS
|
|
2420 jint result = parse_vm_init_args(args);
|
|
2421 if (result != JNI_OK) {
|
|
2422 return result;
|
|
2423 }
|
|
2424
|
|
2425 #ifndef PRODUCT
|
|
2426 if (TraceBytecodesAt != 0) {
|
|
2427 TraceBytecodes = true;
|
|
2428 }
|
|
2429 if (CountCompiledCalls) {
|
|
2430 if (UseCounterDecay) {
|
|
2431 warning("UseCounterDecay disabled because CountCalls is set");
|
|
2432 UseCounterDecay = false;
|
|
2433 }
|
|
2434 }
|
|
2435 #endif // PRODUCT
|
|
2436
|
|
2437 if (PrintGCDetails) {
|
|
2438 // Turn on -verbose:gc options as well
|
|
2439 PrintGC = true;
|
|
2440 if (FLAG_IS_DEFAULT(TraceClassUnloading)) {
|
|
2441 TraceClassUnloading = true;
|
|
2442 }
|
|
2443 }
|
|
2444
|
|
2445 #ifdef SERIALGC
|
|
2446 set_serial_gc_flags();
|
|
2447 #endif // SERIALGC
|
|
2448 #ifdef KERNEL
|
|
2449 no_shared_spaces();
|
|
2450 #endif // KERNEL
|
|
2451
|
|
2452 // Set some flags for ParallelGC if needed.
|
|
2453 set_parallel_gc_flags();
|
|
2454
|
|
2455 // Set some flags for CMS and/or ParNew collectors, as needed.
|
|
2456 set_cms_and_parnew_gc_flags();
|
|
2457
|
|
2458 // Set flags based on ergonomics.
|
|
2459 set_ergonomics_flags();
|
|
2460
|
|
2461 #ifdef SERIALGC
|
|
2462 assert(verify_serial_gc_flags(), "SerialGC unset");
|
|
2463 #endif // SERIALGC
|
|
2464
|
|
2465 // Set bytecode rewriting flags
|
|
2466 set_bytecode_flags();
|
|
2467
|
|
2468 // Set flags if Aggressive optimization flags (-XX:+AggressiveOpts) enabled.
|
|
2469 set_aggressive_opts_flags();
|
|
2470
|
|
2471 #ifdef CC_INTERP
|
|
2472 // Biased locking is not implemented with c++ interpreter
|
|
2473 FLAG_SET_DEFAULT(UseBiasedLocking, false);
|
|
2474 #endif /* CC_INTERP */
|
|
2475
|
|
2476 if (PrintCommandLineFlags) {
|
|
2477 CommandLineFlags::printSetFlags();
|
|
2478 }
|
|
2479
|
|
2480 return JNI_OK;
|
|
2481 }
|
|
2482
|
|
2483 int Arguments::PropertyList_count(SystemProperty* pl) {
|
|
2484 int count = 0;
|
|
2485 while(pl != NULL) {
|
|
2486 count++;
|
|
2487 pl = pl->next();
|
|
2488 }
|
|
2489 return count;
|
|
2490 }
|
|
2491
|
|
2492 const char* Arguments::PropertyList_get_value(SystemProperty *pl, const char* key) {
|
|
2493 assert(key != NULL, "just checking");
|
|
2494 SystemProperty* prop;
|
|
2495 for (prop = pl; prop != NULL; prop = prop->next()) {
|
|
2496 if (strcmp(key, prop->key()) == 0) return prop->value();
|
|
2497 }
|
|
2498 return NULL;
|
|
2499 }
|
|
2500
|
|
2501 const char* Arguments::PropertyList_get_key_at(SystemProperty *pl, int index) {
|
|
2502 int count = 0;
|
|
2503 const char* ret_val = NULL;
|
|
2504
|
|
2505 while(pl != NULL) {
|
|
2506 if(count >= index) {
|
|
2507 ret_val = pl->key();
|
|
2508 break;
|
|
2509 }
|
|
2510 count++;
|
|
2511 pl = pl->next();
|
|
2512 }
|
|
2513
|
|
2514 return ret_val;
|
|
2515 }
|
|
2516
|
|
2517 char* Arguments::PropertyList_get_value_at(SystemProperty* pl, int index) {
|
|
2518 int count = 0;
|
|
2519 char* ret_val = NULL;
|
|
2520
|
|
2521 while(pl != NULL) {
|
|
2522 if(count >= index) {
|
|
2523 ret_val = pl->value();
|
|
2524 break;
|
|
2525 }
|
|
2526 count++;
|
|
2527 pl = pl->next();
|
|
2528 }
|
|
2529
|
|
2530 return ret_val;
|
|
2531 }
|
|
2532
|
|
2533 void Arguments::PropertyList_add(SystemProperty** plist, SystemProperty *new_p) {
|
|
2534 SystemProperty* p = *plist;
|
|
2535 if (p == NULL) {
|
|
2536 *plist = new_p;
|
|
2537 } else {
|
|
2538 while (p->next() != NULL) {
|
|
2539 p = p->next();
|
|
2540 }
|
|
2541 p->set_next(new_p);
|
|
2542 }
|
|
2543 }
|
|
2544
|
|
2545 void Arguments::PropertyList_add(SystemProperty** plist, const char* k, char* v) {
|
|
2546 if (plist == NULL)
|
|
2547 return;
|
|
2548
|
|
2549 SystemProperty* new_p = new SystemProperty(k, v, true);
|
|
2550 PropertyList_add(plist, new_p);
|
|
2551 }
|
|
2552
|
|
2553 // This add maintains unique property key in the list.
|
|
2554 void Arguments::PropertyList_unique_add(SystemProperty** plist, const char* k, char* v) {
|
|
2555 if (plist == NULL)
|
|
2556 return;
|
|
2557
|
|
2558 // If property key exist then update with new value.
|
|
2559 SystemProperty* prop;
|
|
2560 for (prop = *plist; prop != NULL; prop = prop->next()) {
|
|
2561 if (strcmp(k, prop->key()) == 0) {
|
|
2562 prop->set_value(v);
|
|
2563 return;
|
|
2564 }
|
|
2565 }
|
|
2566
|
|
2567 PropertyList_add(plist, k, v);
|
|
2568 }
|
|
2569
|
|
2570 #ifdef KERNEL
|
|
2571 char *Arguments::get_kernel_properties() {
|
|
2572 // Find properties starting with kernel and append them to string
|
|
2573 // We need to find out how long they are first because the URL's that they
|
|
2574 // might point to could get long.
|
|
2575 int length = 0;
|
|
2576 SystemProperty* prop;
|
|
2577 for (prop = _system_properties; prop != NULL; prop = prop->next()) {
|
|
2578 if (strncmp(prop->key(), "kernel.", 7 ) == 0) {
|
|
2579 length += (strlen(prop->key()) + strlen(prop->value()) + 5); // "-D ="
|
|
2580 }
|
|
2581 }
|
|
2582 // Add one for null terminator.
|
|
2583 char *props = AllocateHeap(length + 1, "get_kernel_properties");
|
|
2584 if (length != 0) {
|
|
2585 int pos = 0;
|
|
2586 for (prop = _system_properties; prop != NULL; prop = prop->next()) {
|
|
2587 if (strncmp(prop->key(), "kernel.", 7 ) == 0) {
|
|
2588 jio_snprintf(&props[pos], length-pos,
|
|
2589 "-D%s=%s ", prop->key(), prop->value());
|
|
2590 pos = strlen(props);
|
|
2591 }
|
|
2592 }
|
|
2593 }
|
|
2594 // null terminate props in case of null
|
|
2595 props[length] = '\0';
|
|
2596 return props;
|
|
2597 }
|
|
2598 #endif // KERNEL
|
|
2599
|
|
2600 // Copies src into buf, replacing "%%" with "%" and "%p" with pid
|
|
2601 // Returns true if all of the source pointed by src has been copied over to
|
|
2602 // the destination buffer pointed by buf. Otherwise, returns false.
|
|
2603 // Notes:
|
|
2604 // 1. If the length (buflen) of the destination buffer excluding the
|
|
2605 // NULL terminator character is not long enough for holding the expanded
|
|
2606 // pid characters, it also returns false instead of returning the partially
|
|
2607 // expanded one.
|
|
2608 // 2. The passed in "buflen" should be large enough to hold the null terminator.
|
|
2609 bool Arguments::copy_expand_pid(const char* src, size_t srclen,
|
|
2610 char* buf, size_t buflen) {
|
|
2611 const char* p = src;
|
|
2612 char* b = buf;
|
|
2613 const char* src_end = &src[srclen];
|
|
2614 char* buf_end = &buf[buflen - 1];
|
|
2615
|
|
2616 while (p < src_end && b < buf_end) {
|
|
2617 if (*p == '%') {
|
|
2618 switch (*(++p)) {
|
|
2619 case '%': // "%%" ==> "%"
|
|
2620 *b++ = *p++;
|
|
2621 break;
|
|
2622 case 'p': { // "%p" ==> current process id
|
|
2623 // buf_end points to the character before the last character so
|
|
2624 // that we could write '\0' to the end of the buffer.
|
|
2625 size_t buf_sz = buf_end - b + 1;
|
|
2626 int ret = jio_snprintf(b, buf_sz, "%d", os::current_process_id());
|
|
2627
|
|
2628 // if jio_snprintf fails or the buffer is not long enough to hold
|
|
2629 // the expanded pid, returns false.
|
|
2630 if (ret < 0 || ret >= (int)buf_sz) {
|
|
2631 return false;
|
|
2632 } else {
|
|
2633 b += ret;
|
|
2634 assert(*b == '\0', "fail in copy_expand_pid");
|
|
2635 if (p == src_end && b == buf_end + 1) {
|
|
2636 // reach the end of the buffer.
|
|
2637 return true;
|
|
2638 }
|
|
2639 }
|
|
2640 p++;
|
|
2641 break;
|
|
2642 }
|
|
2643 default :
|
|
2644 *b++ = '%';
|
|
2645 }
|
|
2646 } else {
|
|
2647 *b++ = *p++;
|
|
2648 }
|
|
2649 }
|
|
2650 *b = '\0';
|
|
2651 return (p == src_end); // return false if not all of the source was copied
|
|
2652 }
|