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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) {
|
|
|
368 size_t len = strlen(str) + 1;
|
|
|
369 cp = NEW_C_HEAP_ARRAY(char, len);
|
|
|
370 memcpy(cp, str, len); // copy the trailing null
|
|
|
371 } else {
|
|
|
372 const char separator = *os::path_separator();
|
|
|
373 size_t old_len = strlen(path);
|
|
|
374 size_t str_len = strlen(str);
|
|
|
375 size_t len = old_len + str_len + 2;
|
|
|
376
|
|
|
377 if (prepend) {
|
|
|
378 cp = NEW_C_HEAP_ARRAY(char, len);
|
|
|
379 char* cp_tmp = cp;
|
|
|
380 memcpy(cp_tmp, str, str_len);
|
|
|
381 cp_tmp += str_len;
|
|
|
382 *cp_tmp = separator;
|
|
|
383 memcpy(++cp_tmp, path, old_len + 1); // copy the trailing null
|
|
|
384 FREE_C_HEAP_ARRAY(char, path);
|
|
|
385 } else {
|
|
|
386 cp = REALLOC_C_HEAP_ARRAY(char, path, len);
|
|
|
387 char* cp_tmp = cp + old_len;
|
|
|
388 *cp_tmp = separator;
|
|
|
389 memcpy(++cp_tmp, str, str_len + 1); // copy the trailing null
|
|
|
390 }
|
|
|
391 }
|
|
|
392 return cp;
|
|
|
393 }
|
|
|
394
|
|
|
395 // Scan the directory and append any jar or zip files found to path.
|
|
|
396 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null.
|
|
|
397 char* SysClassPath::add_jars_to_path(char* path, const char* directory) {
|
|
|
398 DIR* dir = os::opendir(directory);
|
|
|
399 if (dir == NULL) return path;
|
|
|
400
|
|
|
401 char dir_sep[2] = { '\0', '\0' };
|
|
|
402 size_t directory_len = strlen(directory);
|
|
|
403 const char fileSep = *os::file_separator();
|
|
|
404 if (directory[directory_len - 1] != fileSep) dir_sep[0] = fileSep;
|
|
|
405
|
|
|
406 /* Scan the directory for jars/zips, appending them to path. */
|
|
|
407 struct dirent *entry;
|
|
|
408 char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(directory));
|
|
|
409 while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL) {
|
|
|
410 const char* name = entry->d_name;
|
|
|
411 const char* ext = name + strlen(name) - 4;
|
|
|
412 bool isJarOrZip = ext > name &&
|
|
|
413 (os::file_name_strcmp(ext, ".jar") == 0 ||
|
|
|
414 os::file_name_strcmp(ext, ".zip") == 0);
|
|
|
415 if (isJarOrZip) {
|
|
|
416 char* jarpath = NEW_C_HEAP_ARRAY(char, directory_len + 2 + strlen(name));
|
|
|
417 sprintf(jarpath, "%s%s%s", directory, dir_sep, name);
|
|
|
418 path = add_to_path(path, jarpath, false);
|
|
|
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) {
|
|
|
1258 NOT_WINDOWS(
|
|
|
1259 // No measured benefit on Windows
|
|
|
1260 if (FLAG_IS_DEFAULT(CacheTimeMillis)) {
|
|
|
1261 FLAG_SET_DEFAULT(CacheTimeMillis, true);
|
|
|
1262 }
|
|
|
1263 )
|
|
|
1264 }
|
|
|
1265 }
|
|
|
1266
|
|
|
1267 //===========================================================================================================
|
|
|
1268 // Parsing of java.compiler property
|
|
|
1269
|
|
|
1270 void Arguments::process_java_compiler_argument(char* arg) {
|
|
|
1271 // For backwards compatibility, Djava.compiler=NONE or ""
|
|
|
1272 // causes us to switch to -Xint mode UNLESS -Xdebug
|
|
|
1273 // is also specified.
|
|
|
1274 if (strlen(arg) == 0 || strcasecmp(arg, "NONE") == 0) {
|
|
|
1275 set_java_compiler(true); // "-Djava.compiler[=...]" most recently seen.
|
|
|
1276 }
|
|
|
1277 }
|
|
|
1278
|
|
|
1279 void Arguments::process_java_launcher_argument(const char* launcher, void* extra_info) {
|
|
|
1280 _sun_java_launcher = strdup(launcher);
|
|
|
1281 }
|
|
|
1282
|
|
|
1283 bool Arguments::created_by_java_launcher() {
|
|
|
1284 assert(_sun_java_launcher != NULL, "property must have value");
|
|
|
1285 return strcmp(DEFAULT_JAVA_LAUNCHER, _sun_java_launcher) != 0;
|
|
|
1286 }
|
|
|
1287
|
|
|
1288 //===========================================================================================================
|
|
|
1289 // Parsing of main arguments
|
|
|
1290
|
|
|
1291 bool Arguments::verify_percentage(uintx value, const char* name) {
|
|
|
1292 if (value <= 100) {
|
|
|
1293 return true;
|
|
|
1294 }
|
|
|
1295 jio_fprintf(defaultStream::error_stream(),
|
|
|
1296 "%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n",
|
|
|
1297 name, value);
|
|
|
1298 return false;
|
|
|
1299 }
|
|
|
1300
|
|
|
1301 static void set_serial_gc_flags() {
|
|
|
1302 FLAG_SET_DEFAULT(UseSerialGC, true);
|
|
|
1303 FLAG_SET_DEFAULT(UseParNewGC, false);
|
|
|
1304 FLAG_SET_DEFAULT(UseConcMarkSweepGC, false);
|
|
|
1305 FLAG_SET_DEFAULT(UseParallelGC, false);
|
|
|
1306 FLAG_SET_DEFAULT(UseParallelOldGC, false);
|
|
|
1307 }
|
|
|
1308
|
|
|
1309 static bool verify_serial_gc_flags() {
|
|
|
1310 return (UseSerialGC &&
|
|
|
1311 !(UseParNewGC || UseConcMarkSweepGC || UseParallelGC ||
|
|
|
1312 UseParallelOldGC));
|
|
|
1313 }
|
|
|
1314
|
|
|
1315 // Check the consistency of vm_init_args
|
|
|
1316 bool Arguments::check_vm_args_consistency() {
|
|
|
1317 // Method for adding checks for flag consistency.
|
|
|
1318 // The intent is to warn the user of all possible conflicts,
|
|
|
1319 // before returning an error.
|
|
|
1320 // Note: Needs platform-dependent factoring.
|
|
|
1321 bool status = true;
|
|
|
1322
|
|
|
1323 #if ( (defined(COMPILER2) && defined(SPARC)))
|
|
|
1324 // NOTE: The call to VM_Version_init depends on the fact that VM_Version_init
|
|
|
1325 // on sparc doesn't require generation of a stub as is the case on, e.g.,
|
|
|
1326 // x86. Normally, VM_Version_init must be called from init_globals in
|
|
|
1327 // init.cpp, which is called by the initial java thread *after* arguments
|
|
|
1328 // have been parsed. VM_Version_init gets called twice on sparc.
|
|
|
1329 extern void VM_Version_init();
|
|
|
1330 VM_Version_init();
|
|
|
1331 if (!VM_Version::has_v9()) {
|
|
|
1332 jio_fprintf(defaultStream::error_stream(),
|
|
|
1333 "V8 Machine detected, Server requires V9\n");
|
|
|
1334 status = false;
|
|
|
1335 }
|
|
|
1336 #endif /* COMPILER2 && SPARC */
|
|
|
1337
|
|
|
1338 // Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product
|
|
|
1339 // builds so the cost of stack banging can be measured.
|
|
|
1340 #if (defined(PRODUCT) && defined(SOLARIS))
|
|
|
1341 if (!UseBoundThreads && !UseStackBanging) {
|
|
|
1342 jio_fprintf(defaultStream::error_stream(),
|
|
|
1343 "-UseStackBanging conflicts with -UseBoundThreads\n");
|
|
|
1344
|
|
|
1345 status = false;
|
|
|
1346 }
|
|
|
1347 #endif
|
|
|
1348
|
|
|
1349 if (TLABRefillWasteFraction == 0) {
|
|
|
1350 jio_fprintf(defaultStream::error_stream(),
|
|
|
1351 "TLABRefillWasteFraction should be a denominator, "
|
|
|
1352 "not " SIZE_FORMAT "\n",
|
|
|
1353 TLABRefillWasteFraction);
|
|
|
1354 status = false;
|
|
|
1355 }
|
|
|
1356
|
|
|
1357 status &= verify_percentage(MaxLiveObjectEvacuationRatio,
|
|
|
1358 "MaxLiveObjectEvacuationRatio");
|
|
|
1359 status &= verify_percentage(AdaptiveSizePolicyWeight,
|
|
|
1360 "AdaptiveSizePolicyWeight");
|
|
|
1361 status &= verify_percentage(AdaptivePermSizeWeight, "AdaptivePermSizeWeight");
|
|
|
1362 status &= verify_percentage(ThresholdTolerance, "ThresholdTolerance");
|
|
|
1363 status &= verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio");
|
|
|
1364 status &= verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio");
|
|
|
1365
|
|
|
1366 if (MinHeapFreeRatio > MaxHeapFreeRatio) {
|
|
|
1367 jio_fprintf(defaultStream::error_stream(),
|
|
|
1368 "MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or "
|
|
|
1369 "equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n",
|
|
|
1370 MinHeapFreeRatio, MaxHeapFreeRatio);
|
|
|
1371 status = false;
|
|
|
1372 }
|
|
|
1373 // Keeping the heap 100% free is hard ;-) so limit it to 99%.
|
|
|
1374 MinHeapFreeRatio = MIN2(MinHeapFreeRatio, (uintx) 99);
|
|
|
1375
|
|
|
1376 if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) {
|
|
|
1377 MarkSweepAlwaysCompactCount = 1; // Move objects every gc.
|
|
|
1378 }
|
|
|
1379
|
|
|
1380 status &= verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit");
|
|
|
1381 status &= verify_percentage(GCTimeLimit, "GCTimeLimit");
|
|
|
1382 if (GCTimeLimit == 100) {
|
|
|
1383 // Turn off gc-overhead-limit-exceeded checks
|
|
|
1384 FLAG_SET_DEFAULT(UseGCOverheadLimit, false);
|
|
|
1385 }
|
|
|
1386
|
|
|
1387 status &= verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit");
|
|
|
1388
|
|
|
1389 // Check user specified sharing option conflict with Parallel GC
|
|
|
1390 bool cannot_share = (UseConcMarkSweepGC || UseParallelGC ||
|
|
|
1391 UseParallelOldGC || UseParNewGC ||
|
|
|
1392 SOLARIS_ONLY(UseISM) NOT_SOLARIS(UseLargePages));
|
|
|
1393
|
|
|
1394 if (cannot_share) {
|
|
|
1395 // Either force sharing on by forcing the other options off, or
|
|
|
1396 // force sharing off.
|
|
|
1397 if (DumpSharedSpaces || ForceSharedSpaces) {
|
|
|
1398 set_serial_gc_flags();
|
|
|
1399 FLAG_SET_DEFAULT(SOLARIS_ONLY(UseISM) NOT_SOLARIS(UseLargePages), false);
|
|
|
1400 } else {
|
|
|
1401 no_shared_spaces();
|
|
|
1402 }
|
|
|
1403 }
|
|
|
1404
|
|
|
1405 // Ensure that the user has not selected conflicting sets
|
|
|
1406 // of collectors. [Note: this check is merely a user convenience;
|
|
|
1407 // collectors over-ride each other so that only a non-conflicting
|
|
|
1408 // set is selected; however what the user gets is not what they
|
|
|
1409 // may have expected from the combination they asked for. It's
|
|
|
1410 // better to reduce user confusion by not allowing them to
|
|
|
1411 // select conflicting combinations.
|
|
|
1412 uint i = 0;
|
|
|
1413 if (UseSerialGC) i++;
|
|
|
1414 if (UseConcMarkSweepGC || UseParNewGC) i++;
|
|
|
1415 if (UseParallelGC || UseParallelOldGC) i++;
|
|
|
1416 if (i > 1) {
|
|
|
1417 jio_fprintf(defaultStream::error_stream(),
|
|
|
1418 "Conflicting collector combinations in option list; "
|
|
|
1419 "please refer to the release notes for the combinations "
|
|
|
1420 "allowed\n");
|
|
|
1421 status = false;
|
|
|
1422 }
|
|
|
1423
|
|
|
1424 if (_has_alloc_profile) {
|
|
|
1425 if (UseParallelGC || UseParallelOldGC) {
|
|
|
1426 jio_fprintf(defaultStream::error_stream(),
|
|
|
1427 "error: invalid argument combination.\n"
|
|
|
1428 "Allocation profiling (-Xaprof) cannot be used together with "
|
|
|
1429 "Parallel GC (-XX:+UseParallelGC or -XX:+UseParallelOldGC).\n");
|
|
|
1430 status = false;
|
|
|
1431 }
|
|
|
1432 if (UseConcMarkSweepGC) {
|
|
|
1433 jio_fprintf(defaultStream::error_stream(),
|
|
|
1434 "error: invalid argument combination.\n"
|
|
|
1435 "Allocation profiling (-Xaprof) cannot be used together with "
|
|
|
1436 "the CMS collector (-XX:+UseConcMarkSweepGC).\n");
|
|
|
1437 status = false;
|
|
|
1438 }
|
|
|
1439 }
|
|
|
1440
|
|
|
1441 if (CMSIncrementalMode) {
|
|
|
1442 if (!UseConcMarkSweepGC) {
|
|
|
1443 jio_fprintf(defaultStream::error_stream(),
|
|
|
1444 "error: invalid argument combination.\n"
|
|
|
1445 "The CMS collector (-XX:+UseConcMarkSweepGC) must be "
|
|
|
1446 "selected in order\nto use CMSIncrementalMode.\n");
|
|
|
1447 status = false;
|
|
|
1448 } else if (!UseTLAB) {
|
|
|
1449 jio_fprintf(defaultStream::error_stream(),
|
|
|
1450 "error: CMSIncrementalMode requires thread-local "
|
|
|
1451 "allocation buffers\n(-XX:+UseTLAB).\n");
|
|
|
1452 status = false;
|
|
|
1453 } else {
|
|
|
1454 status &= verify_percentage(CMSIncrementalDutyCycle,
|
|
|
1455 "CMSIncrementalDutyCycle");
|
|
|
1456 status &= verify_percentage(CMSIncrementalDutyCycleMin,
|
|
|
1457 "CMSIncrementalDutyCycleMin");
|
|
|
1458 status &= verify_percentage(CMSIncrementalSafetyFactor,
|
|
|
1459 "CMSIncrementalSafetyFactor");
|
|
|
1460 status &= verify_percentage(CMSIncrementalOffset,
|
|
|
1461 "CMSIncrementalOffset");
|
|
|
1462 status &= verify_percentage(CMSExpAvgFactor,
|
|
|
1463 "CMSExpAvgFactor");
|
|
|
1464 // If it was not set on the command line, set
|
|
|
1465 // CMSInitiatingOccupancyFraction to 1 so icms can initiate cycles early.
|
|
|
1466 if (CMSInitiatingOccupancyFraction < 0) {
|
|
|
1467 FLAG_SET_DEFAULT(CMSInitiatingOccupancyFraction, 1);
|
|
|
1468 }
|
|
|
1469 }
|
|
|
1470 }
|
|
|
1471
|
|
|
1472 if (UseNUMA && !UseTLAB) {
|
|
|
1473 jio_fprintf(defaultStream::error_stream(),
|
|
|
1474 "error: NUMA allocator (-XX:+UseNUMA) requires thread-local "
|
|
|
1475 "allocation\nbuffers (-XX:+UseTLAB).\n");
|
|
|
1476 status = false;
|
|
|
1477 }
|
|
|
1478
|
|
|
1479 // CMS space iteration, which FLSVerifyAllHeapreferences entails,
|
|
|
1480 // insists that we hold the requisite locks so that the iteration is
|
|
|
1481 // MT-safe. For the verification at start-up and shut-down, we don't
|
|
|
1482 // yet have a good way of acquiring and releasing these locks,
|
|
|
1483 // which are not visible at the CollectedHeap level. We want to
|
|
|
1484 // be able to acquire these locks and then do the iteration rather
|
|
|
1485 // than just disable the lock verification. This will be fixed under
|
|
|
1486 // bug 4788986.
|
|
|
1487 if (UseConcMarkSweepGC && FLSVerifyAllHeapReferences) {
|
|
|
1488 if (VerifyGCStartAt == 0) {
|
|
|
1489 warning("Heap verification at start-up disabled "
|
|
|
1490 "(due to current incompatibility with FLSVerifyAllHeapReferences)");
|
|
|
1491 VerifyGCStartAt = 1; // Disable verification at start-up
|
|
|
1492 }
|
|
|
1493 if (VerifyBeforeExit) {
|
|
|
1494 warning("Heap verification at shutdown disabled "
|
|
|
1495 "(due to current incompatibility with FLSVerifyAllHeapReferences)");
|
|
|
1496 VerifyBeforeExit = false; // Disable verification at shutdown
|
|
|
1497 }
|
|
|
1498 }
|
|
|
1499
|
|
|
1500 // Note: only executed in non-PRODUCT mode
|
|
|
1501 if (!UseAsyncConcMarkSweepGC &&
|
|
|
1502 (ExplicitGCInvokesConcurrent ||
|
|
|
1503 ExplicitGCInvokesConcurrentAndUnloadsClasses)) {
|
|
|
1504 jio_fprintf(defaultStream::error_stream(),
|
|
|
1505 "error: +ExplictGCInvokesConcurrent[AndUnloadsClasses] conflicts"
|
|
|
1506 " with -UseAsyncConcMarkSweepGC");
|
|
|
1507 status = false;
|
|
|
1508 }
|
|
|
1509
|
|
|
1510 return status;
|
|
|
1511 }
|
|
|
1512
|
|
|
1513 bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore,
|
|
|
1514 const char* option_type) {
|
|
|
1515 if (ignore) return false;
|
|
|
1516
|
|
|
1517 const char* spacer = " ";
|
|
|
1518 if (option_type == NULL) {
|
|
|
1519 option_type = ++spacer; // Set both to the empty string.
|
|
|
1520 }
|
|
|
1521
|
|
|
1522 if (os::obsolete_option(option)) {
|
|
|
1523 jio_fprintf(defaultStream::error_stream(),
|
|
|
1524 "Obsolete %s%soption: %s\n", option_type, spacer,
|
|
|
1525 option->optionString);
|
|
|
1526 return false;
|
|
|
1527 } else {
|
|
|
1528 jio_fprintf(defaultStream::error_stream(),
|
|
|
1529 "Unrecognized %s%soption: %s\n", option_type, spacer,
|
|
|
1530 option->optionString);
|
|
|
1531 return true;
|
|
|
1532 }
|
|
|
1533 }
|
|
|
1534
|
|
|
1535 static const char* user_assertion_options[] = {
|
|
|
1536 "-da", "-ea", "-disableassertions", "-enableassertions", 0
|
|
|
1537 };
|
|
|
1538
|
|
|
1539 static const char* system_assertion_options[] = {
|
|
|
1540 "-dsa", "-esa", "-disablesystemassertions", "-enablesystemassertions", 0
|
|
|
1541 };
|
|
|
1542
|
|
|
1543 // Return true if any of the strings in null-terminated array 'names' matches.
|
|
|
1544 // If tail_allowed is true, then the tail must begin with a colon; otherwise,
|
|
|
1545 // the option must match exactly.
|
|
|
1546 static bool match_option(const JavaVMOption* option, const char** names, const char** tail,
|
|
|
1547 bool tail_allowed) {
|
|
|
1548 for (/* empty */; *names != NULL; ++names) {
|
|
|
1549 if (match_option(option, *names, tail)) {
|
|
|
1550 if (**tail == '\0' || tail_allowed && **tail == ':') {
|
|
|
1551 return true;
|
|
|
1552 }
|
|
|
1553 }
|
|
|
1554 }
|
|
|
1555 return false;
|
|
|
1556 }
|
|
|
1557
|
|
|
1558 Arguments::ArgsRange Arguments::parse_memory_size(const char* s,
|
|
|
1559 jlong* long_arg,
|
|
|
1560 jlong min_size) {
|
|
|
1561 if (!atomll(s, long_arg)) return arg_unreadable;
|
|
|
1562 return check_memory_size(*long_arg, min_size);
|
|
|
1563 }
|
|
|
1564
|
|
|
1565 // Parse JavaVMInitArgs structure
|
|
|
1566
|
|
|
1567 jint Arguments::parse_vm_init_args(const JavaVMInitArgs* args) {
|
|
|
1568 // For components of the system classpath.
|
|
|
1569 SysClassPath scp(Arguments::get_sysclasspath());
|
|
|
1570 bool scp_assembly_required = false;
|
|
|
1571
|
|
|
1572 // Save default settings for some mode flags
|
|
|
1573 Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods;
|
|
|
1574 Arguments::_UseOnStackReplacement = UseOnStackReplacement;
|
|
|
1575 Arguments::_ClipInlining = ClipInlining;
|
|
|
1576 Arguments::_BackgroundCompilation = BackgroundCompilation;
|
|
|
1577 Arguments::_Tier2CompileThreshold = Tier2CompileThreshold;
|
|
|
1578
|
|
|
1579 // Parse JAVA_TOOL_OPTIONS environment variable (if present)
|
|
|
1580 jint result = parse_java_tool_options_environment_variable(&scp, &scp_assembly_required);
|
|
|
1581 if (result != JNI_OK) {
|
|
|
1582 return result;
|
|
|
1583 }
|
|
|
1584
|
|
|
1585 // Parse JavaVMInitArgs structure passed in
|
|
|
1586 result = parse_each_vm_init_arg(args, &scp, &scp_assembly_required, COMMAND_LINE);
|
|
|
1587 if (result != JNI_OK) {
|
|
|
1588 return result;
|
|
|
1589 }
|
|
|
1590
|
|
|
1591 // Parse _JAVA_OPTIONS environment variable (if present) (mimics classic VM)
|
|
|
1592 result = parse_java_options_environment_variable(&scp, &scp_assembly_required);
|
|
|
1593 if (result != JNI_OK) {
|
|
|
1594 return result;
|
|
|
1595 }
|
|
|
1596
|
|
|
1597 // Do final processing now that all arguments have been parsed
|
|
|
1598 result = finalize_vm_init_args(&scp, scp_assembly_required);
|
|
|
1599 if (result != JNI_OK) {
|
|
|
1600 return result;
|
|
|
1601 }
|
|
|
1602
|
|
|
1603 return JNI_OK;
|
|
|
1604 }
|
|
|
1605
|
|
|
1606
|
|
|
1607 jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args,
|
|
|
1608 SysClassPath* scp_p,
|
|
|
1609 bool* scp_assembly_required_p,
|
|
|
1610 FlagValueOrigin origin) {
|
|
|
1611 // Remaining part of option string
|
|
|
1612 const char* tail;
|
|
|
1613
|
|
|
1614 // iterate over arguments
|
|
|
1615 for (int index = 0; index < args->nOptions; index++) {
|
|
|
1616 bool is_absolute_path = false; // for -agentpath vs -agentlib
|
|
|
1617
|
|
|
1618 const JavaVMOption* option = args->options + index;
|
|
|
1619
|
|
|
1620 if (!match_option(option, "-Djava.class.path", &tail) &&
|
|
|
1621 !match_option(option, "-Dsun.java.command", &tail) &&
|
|
|
1622 !match_option(option, "-Dsun.java.launcher", &tail)) {
|
|
|
1623
|
|
|
1624 // add all jvm options to the jvm_args string. This string
|
|
|
1625 // is used later to set the java.vm.args PerfData string constant.
|
|
|
1626 // the -Djava.class.path and the -Dsun.java.command options are
|
|
|
1627 // omitted from jvm_args string as each have their own PerfData
|
|
|
1628 // string constant object.
|
|
|
1629 build_jvm_args(option->optionString);
|
|
|
1630 }
|
|
|
1631
|
|
|
1632 // -verbose:[class/gc/jni]
|
|
|
1633 if (match_option(option, "-verbose", &tail)) {
|
|
|
1634 if (!strcmp(tail, ":class") || !strcmp(tail, "")) {
|
|
|
1635 FLAG_SET_CMDLINE(bool, TraceClassLoading, true);
|
|
|
1636 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true);
|
|
|
1637 } else if (!strcmp(tail, ":gc")) {
|
|
|
1638 FLAG_SET_CMDLINE(bool, PrintGC, true);
|
|
|
1639 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true);
|
|
|
1640 } else if (!strcmp(tail, ":jni")) {
|
|
|
1641 FLAG_SET_CMDLINE(bool, PrintJNIResolving, true);
|
|
|
1642 }
|
|
|
1643 // -da / -ea / -disableassertions / -enableassertions
|
|
|
1644 // These accept an optional class/package name separated by a colon, e.g.,
|
|
|
1645 // -da:java.lang.Thread.
|
|
|
1646 } else if (match_option(option, user_assertion_options, &tail, true)) {
|
|
|
1647 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e'
|
|
|
1648 if (*tail == '\0') {
|
|
|
1649 JavaAssertions::setUserClassDefault(enable);
|
|
|
1650 } else {
|
|
|
1651 assert(*tail == ':', "bogus match by match_option()");
|
|
|
1652 JavaAssertions::addOption(tail + 1, enable);
|
|
|
1653 }
|
|
|
1654 // -dsa / -esa / -disablesystemassertions / -enablesystemassertions
|
|
|
1655 } else if (match_option(option, system_assertion_options, &tail, false)) {
|
|
|
1656 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e'
|
|
|
1657 JavaAssertions::setSystemClassDefault(enable);
|
|
|
1658 // -bootclasspath:
|
|
|
1659 } else if (match_option(option, "-Xbootclasspath:", &tail)) {
|
|
|
1660 scp_p->reset_path(tail);
|
|
|
1661 *scp_assembly_required_p = true;
|
|
|
1662 // -bootclasspath/a:
|
|
|
1663 } else if (match_option(option, "-Xbootclasspath/a:", &tail)) {
|
|
|
1664 scp_p->add_suffix(tail);
|
|
|
1665 *scp_assembly_required_p = true;
|
|
|
1666 // -bootclasspath/p:
|
|
|
1667 } else if (match_option(option, "-Xbootclasspath/p:", &tail)) {
|
|
|
1668 scp_p->add_prefix(tail);
|
|
|
1669 *scp_assembly_required_p = true;
|
|
|
1670 // -Xrun
|
|
|
1671 } else if (match_option(option, "-Xrun", &tail)) {
|
|
|
1672 if(tail != NULL) {
|
|
|
1673 const char* pos = strchr(tail, ':');
|
|
|
1674 size_t len = (pos == NULL) ? strlen(tail) : pos - tail;
|
|
|
1675 char* name = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len);
|
|
|
1676 name[len] = '\0';
|
|
|
1677
|
|
|
1678 char *options = NULL;
|
|
|
1679 if(pos != NULL) {
|
|
|
1680 size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied.
|
|
|
1681 options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2), pos+1, len2);
|
|
|
1682 }
|
|
|
1683 #ifdef JVMTI_KERNEL
|
|
|
1684 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) {
|
|
|
1685 warning("profiling and debugging agents are not supported with Kernel VM");
|
|
|
1686 } else
|
|
|
1687 #endif // JVMTI_KERNEL
|
|
|
1688 add_init_library(name, options);
|
|
|
1689 }
|
|
|
1690 // -agentlib and -agentpath
|
|
|
1691 } else if (match_option(option, "-agentlib:", &tail) ||
|
|
|
1692 (is_absolute_path = match_option(option, "-agentpath:", &tail))) {
|
|
|
1693 if(tail != NULL) {
|
|
|
1694 const char* pos = strchr(tail, '=');
|
|
|
1695 size_t len = (pos == NULL) ? strlen(tail) : pos - tail;
|
|
|
1696 char* name = strncpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len);
|
|
|
1697 name[len] = '\0';
|
|
|
1698
|
|
|
1699 char *options = NULL;
|
|
|
1700 if(pos != NULL) {
|
|
|
1701 options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1), pos + 1);
|
|
|
1702 }
|
|
|
1703 #ifdef JVMTI_KERNEL
|
|
|
1704 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) {
|
|
|
1705 warning("profiling and debugging agents are not supported with Kernel VM");
|
|
|
1706 } else
|
|
|
1707 #endif // JVMTI_KERNEL
|
|
|
1708 add_init_agent(name, options, is_absolute_path);
|
|
|
1709
|
|
|
1710 }
|
|
|
1711 // -javaagent
|
|
|
1712 } else if (match_option(option, "-javaagent:", &tail)) {
|
|
|
1713 if(tail != NULL) {
|
|
|
1714 char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1), tail);
|
|
|
1715 add_init_agent("instrument", options, false);
|
|
|
1716 }
|
|
|
1717 // -Xnoclassgc
|
|
|
1718 } else if (match_option(option, "-Xnoclassgc", &tail)) {
|
|
|
1719 FLAG_SET_CMDLINE(bool, ClassUnloading, false);
|
|
|
1720 // -Xincgc: i-CMS
|
|
|
1721 } else if (match_option(option, "-Xincgc", &tail)) {
|
|
|
1722 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true);
|
|
|
1723 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, true);
|
|
|
1724 // -Xnoincgc: no i-CMS
|
|
|
1725 } else if (match_option(option, "-Xnoincgc", &tail)) {
|
|
|
1726 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false);
|
|
|
1727 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, false);
|
|
|
1728 // -Xconcgc
|
|
|
1729 } else if (match_option(option, "-Xconcgc", &tail)) {
|
|
|
1730 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true);
|
|
|
1731 // -Xnoconcgc
|
|
|
1732 } else if (match_option(option, "-Xnoconcgc", &tail)) {
|
|
|
1733 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false);
|
|
|
1734 // -Xbatch
|
|
|
1735 } else if (match_option(option, "-Xbatch", &tail)) {
|
|
|
1736 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false);
|
|
|
1737 // -Xmn for compatibility with other JVM vendors
|
|
|
1738 } else if (match_option(option, "-Xmn", &tail)) {
|
|
|
1739 jlong long_initial_eden_size = 0;
|
|
|
1740 ArgsRange errcode = parse_memory_size(tail, &long_initial_eden_size, 1);
|
|
|
1741 if (errcode != arg_in_range) {
|
|
|
1742 jio_fprintf(defaultStream::error_stream(),
|
|
|
1743 "Invalid initial eden size: %s\n", option->optionString);
|
|
|
1744 describe_range_error(errcode);
|
|
|
1745 return JNI_EINVAL;
|
|
|
1746 }
|
|
|
1747 FLAG_SET_CMDLINE(uintx, MaxNewSize, (size_t) long_initial_eden_size);
|
|
|
1748 FLAG_SET_CMDLINE(uintx, NewSize, (size_t) long_initial_eden_size);
|
|
|
1749 // -Xms
|
|
|
1750 } else if (match_option(option, "-Xms", &tail)) {
|
|
|
1751 jlong long_initial_heap_size = 0;
|
|
|
1752 ArgsRange errcode = parse_memory_size(tail, &long_initial_heap_size, 1);
|
|
|
1753 if (errcode != arg_in_range) {
|
|
|
1754 jio_fprintf(defaultStream::error_stream(),
|
|
|
1755 "Invalid initial heap size: %s\n", option->optionString);
|
|
|
1756 describe_range_error(errcode);
|
|
|
1757 return JNI_EINVAL;
|
|
|
1758 }
|
|
|
1759 set_initial_heap_size((size_t) long_initial_heap_size);
|
|
|
1760 // Currently the minimum size and the initial heap sizes are the same.
|
|
|
1761 set_min_heap_size(initial_heap_size());
|
|
|
1762 // -Xmx
|
|
|
1763 } else if (match_option(option, "-Xmx", &tail)) {
|
|
|
1764 jlong long_max_heap_size = 0;
|
|
|
1765 ArgsRange errcode = parse_memory_size(tail, &long_max_heap_size, 1);
|
|
|
1766 if (errcode != arg_in_range) {
|
|
|
1767 jio_fprintf(defaultStream::error_stream(),
|
|
|
1768 "Invalid maximum heap size: %s\n", option->optionString);
|
|
|
1769 describe_range_error(errcode);
|
|
|
1770 return JNI_EINVAL;
|
|
|
1771 }
|
|
|
1772 FLAG_SET_CMDLINE(uintx, MaxHeapSize, (size_t) long_max_heap_size);
|
|
|
1773 // Xmaxf
|
|
|
1774 } else if (match_option(option, "-Xmaxf", &tail)) {
|
|
|
1775 int maxf = (int)(atof(tail) * 100);
|
|
|
1776 if (maxf < 0 || maxf > 100) {
|
|
|
1777 jio_fprintf(defaultStream::error_stream(),
|
|
|
1778 "Bad max heap free percentage size: %s\n",
|
|
|
1779 option->optionString);
|
|
|
1780 return JNI_EINVAL;
|
|
|
1781 } else {
|
|
|
1782 FLAG_SET_CMDLINE(uintx, MaxHeapFreeRatio, maxf);
|
|
|
1783 }
|
|
|
1784 // Xminf
|
|
|
1785 } else if (match_option(option, "-Xminf", &tail)) {
|
|
|
1786 int minf = (int)(atof(tail) * 100);
|
|
|
1787 if (minf < 0 || minf > 100) {
|
|
|
1788 jio_fprintf(defaultStream::error_stream(),
|
|
|
1789 "Bad min heap free percentage size: %s\n",
|
|
|
1790 option->optionString);
|
|
|
1791 return JNI_EINVAL;
|
|
|
1792 } else {
|
|
|
1793 FLAG_SET_CMDLINE(uintx, MinHeapFreeRatio, minf);
|
|
|
1794 }
|
|
|
1795 // -Xss
|
|
|
1796 } else if (match_option(option, "-Xss", &tail)) {
|
|
|
1797 jlong long_ThreadStackSize = 0;
|
|
|
1798 ArgsRange errcode = parse_memory_size(tail, &long_ThreadStackSize, 1000);
|
|
|
1799 if (errcode != arg_in_range) {
|
|
|
1800 jio_fprintf(defaultStream::error_stream(),
|
|
|
1801 "Invalid thread stack size: %s\n", option->optionString);
|
|
|
1802 describe_range_error(errcode);
|
|
|
1803 return JNI_EINVAL;
|
|
|
1804 }
|
|
|
1805 // Internally track ThreadStackSize in units of 1024 bytes.
|
|
|
1806 FLAG_SET_CMDLINE(intx, ThreadStackSize,
|
|
|
1807 round_to((int)long_ThreadStackSize, K) / K);
|
|
|
1808 // -Xoss
|
|
|
1809 } else if (match_option(option, "-Xoss", &tail)) {
|
|
|
1810 // HotSpot does not have separate native and Java stacks, ignore silently for compatibility
|
|
|
1811 // -Xmaxjitcodesize
|
|
|
1812 } else if (match_option(option, "-Xmaxjitcodesize", &tail)) {
|
|
|
1813 jlong long_ReservedCodeCacheSize = 0;
|
|
|
1814 ArgsRange errcode = parse_memory_size(tail, &long_ReservedCodeCacheSize,
|
|
|
1815 InitialCodeCacheSize);
|
|
|
1816 if (errcode != arg_in_range) {
|
|
|
1817 jio_fprintf(defaultStream::error_stream(),
|
|
|
1818 "Invalid maximum code cache size: %s\n",
|
|
|
1819 option->optionString);
|
|
|
1820 describe_range_error(errcode);
|
|
|
1821 return JNI_EINVAL;
|
|
|
1822 }
|
|
|
1823 FLAG_SET_CMDLINE(uintx, ReservedCodeCacheSize, (uintx)long_ReservedCodeCacheSize);
|
|
|
1824 // -green
|
|
|
1825 } else if (match_option(option, "-green", &tail)) {
|
|
|
1826 jio_fprintf(defaultStream::error_stream(),
|
|
|
1827 "Green threads support not available\n");
|
|
|
1828 return JNI_EINVAL;
|
|
|
1829 // -native
|
|
|
1830 } else if (match_option(option, "-native", &tail)) {
|
|
|
1831 // HotSpot always uses native threads, ignore silently for compatibility
|
|
|
1832 // -Xsqnopause
|
|
|
1833 } else if (match_option(option, "-Xsqnopause", &tail)) {
|
|
|
1834 // EVM option, ignore silently for compatibility
|
|
|
1835 // -Xrs
|
|
|
1836 } else if (match_option(option, "-Xrs", &tail)) {
|
|
|
1837 // Classic/EVM option, new functionality
|
|
|
1838 FLAG_SET_CMDLINE(bool, ReduceSignalUsage, true);
|
|
|
1839 } else if (match_option(option, "-Xusealtsigs", &tail)) {
|
|
|
1840 // change default internal VM signals used - lower case for back compat
|
|
|
1841 FLAG_SET_CMDLINE(bool, UseAltSigs, true);
|
|
|
1842 // -Xoptimize
|
|
|
1843 } else if (match_option(option, "-Xoptimize", &tail)) {
|
|
|
1844 // EVM option, ignore silently for compatibility
|
|
|
1845 // -Xprof
|
|
|
1846 } else if (match_option(option, "-Xprof", &tail)) {
|
|
|
1847 #ifndef FPROF_KERNEL
|
|
|
1848 _has_profile = true;
|
|
|
1849 #else // FPROF_KERNEL
|
|
|
1850 // do we have to exit?
|
|
|
1851 warning("Kernel VM does not support flat profiling.");
|
|
|
1852 #endif // FPROF_KERNEL
|
|
|
1853 // -Xaprof
|
|
|
1854 } else if (match_option(option, "-Xaprof", &tail)) {
|
|
|
1855 _has_alloc_profile = true;
|
|
|
1856 // -Xconcurrentio
|
|
|
1857 } else if (match_option(option, "-Xconcurrentio", &tail)) {
|
|
|
1858 FLAG_SET_CMDLINE(bool, UseLWPSynchronization, true);
|
|
|
1859 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false);
|
|
|
1860 FLAG_SET_CMDLINE(intx, DeferThrSuspendLoopCount, 1);
|
|
|
1861 FLAG_SET_CMDLINE(bool, UseTLAB, false);
|
|
|
1862 FLAG_SET_CMDLINE(uintx, NewSizeThreadIncrease, 16 * K); // 20Kb per thread added to new generation
|
|
|
1863
|
|
|
1864 // -Xinternalversion
|
|
|
1865 } else if (match_option(option, "-Xinternalversion", &tail)) {
|
|
|
1866 jio_fprintf(defaultStream::output_stream(), "%s\n",
|
|
|
1867 VM_Version::internal_vm_info_string());
|
|
|
1868 vm_exit(0);
|
|
|
1869 #ifndef PRODUCT
|
|
|
1870 // -Xprintflags
|
|
|
1871 } else if (match_option(option, "-Xprintflags", &tail)) {
|
|
|
1872 CommandLineFlags::printFlags();
|
|
|
1873 vm_exit(0);
|
|
|
1874 #endif
|
|
|
1875 // -D
|
|
|
1876 } else if (match_option(option, "-D", &tail)) {
|
|
|
1877 if (!add_property(tail)) {
|
|
|
1878 return JNI_ENOMEM;
|
|
|
1879 }
|
|
|
1880 // Out of the box management support
|
|
|
1881 if (match_option(option, "-Dcom.sun.management", &tail)) {
|
|
|
1882 FLAG_SET_CMDLINE(bool, ManagementServer, true);
|
|
|
1883 }
|
|
|
1884 // -Xint
|
|
|
1885 } else if (match_option(option, "-Xint", &tail)) {
|
|
|
1886 set_mode_flags(_int);
|
|
|
1887 // -Xmixed
|
|
|
1888 } else if (match_option(option, "-Xmixed", &tail)) {
|
|
|
1889 set_mode_flags(_mixed);
|
|
|
1890 // -Xcomp
|
|
|
1891 } else if (match_option(option, "-Xcomp", &tail)) {
|
|
|
1892 // for testing the compiler; turn off all flags that inhibit compilation
|
|
|
1893 set_mode_flags(_comp);
|
|
|
1894
|
|
|
1895 // -Xshare:dump
|
|
|
1896 } else if (match_option(option, "-Xshare:dump", &tail)) {
|
|
|
1897 #ifdef TIERED
|
|
|
1898 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true);
|
|
|
1899 set_mode_flags(_int); // Prevent compilation, which creates objects
|
|
|
1900 #elif defined(COMPILER2)
|
|
|
1901 vm_exit_during_initialization(
|
|
|
1902 "Dumping a shared archive is not supported on the Server JVM.", NULL);
|
|
|
1903 #elif defined(KERNEL)
|
|
|
1904 vm_exit_during_initialization(
|
|
|
1905 "Dumping a shared archive is not supported on the Kernel JVM.", NULL);
|
|
|
1906 #else
|
|
|
1907 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true);
|
|
|
1908 set_mode_flags(_int); // Prevent compilation, which creates objects
|
|
|
1909 #endif
|
|
|
1910 // -Xshare:on
|
|
|
1911 } else if (match_option(option, "-Xshare:on", &tail)) {
|
|
|
1912 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true);
|
|
|
1913 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, true);
|
|
|
1914 #ifdef TIERED
|
|
|
1915 FLAG_SET_CMDLINE(bool, ForceSharedSpaces, true);
|
|
|
1916 #endif // TIERED
|
|
|
1917 // -Xshare:auto
|
|
|
1918 } else if (match_option(option, "-Xshare:auto", &tail)) {
|
|
|
1919 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true);
|
|
|
1920 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false);
|
|
|
1921 // -Xshare:off
|
|
|
1922 } else if (match_option(option, "-Xshare:off", &tail)) {
|
|
|
1923 FLAG_SET_CMDLINE(bool, UseSharedSpaces, false);
|
|
|
1924 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false);
|
|
|
1925
|
|
|
1926 // -Xverify
|
|
|
1927 } else if (match_option(option, "-Xverify", &tail)) {
|
|
|
1928 if (strcmp(tail, ":all") == 0 || strcmp(tail, "") == 0) {
|
|
|
1929 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, true);
|
|
|
1930 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true);
|
|
|
1931 } else if (strcmp(tail, ":remote") == 0) {
|
|
|
1932 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false);
|
|
|
1933 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true);
|
|
|
1934 } else if (strcmp(tail, ":none") == 0) {
|
|
|
1935 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false);
|
|
|
1936 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, false);
|
|
|
1937 } else if (is_bad_option(option, args->ignoreUnrecognized, "verification")) {
|
|
|
1938 return JNI_EINVAL;
|
|
|
1939 }
|
|
|
1940 // -Xdebug
|
|
|
1941 } else if (match_option(option, "-Xdebug", &tail)) {
|
|
|
1942 // note this flag has been used, then ignore
|
|
|
1943 set_xdebug_mode(true);
|
|
|
1944 // -Xnoagent
|
|
|
1945 } else if (match_option(option, "-Xnoagent", &tail)) {
|
|
|
1946 // For compatibility with classic. HotSpot refuses to load the old style agent.dll.
|
|
|
1947 } else if (match_option(option, "-Xboundthreads", &tail)) {
|
|
|
1948 // Bind user level threads to kernel threads (Solaris only)
|
|
|
1949 FLAG_SET_CMDLINE(bool, UseBoundThreads, true);
|
|
|
1950 } else if (match_option(option, "-Xloggc:", &tail)) {
|
|
|
1951 // Redirect GC output to the file. -Xloggc:<filename>
|
|
|
1952 // ostream_init_log(), when called will use this filename
|
|
|
1953 // to initialize a fileStream.
|
|
|
1954 _gc_log_filename = strdup(tail);
|
|
|
1955 FLAG_SET_CMDLINE(bool, PrintGC, true);
|
|
|
1956 FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true);
|
|
|
1957 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true);
|
|
|
1958
|
|
|
1959 // JNI hooks
|
|
|
1960 } else if (match_option(option, "-Xcheck", &tail)) {
|
|
|
1961 if (!strcmp(tail, ":jni")) {
|
|
|
1962 CheckJNICalls = true;
|
|
|
1963 } else if (is_bad_option(option, args->ignoreUnrecognized,
|
|
|
1964 "check")) {
|
|
|
1965 return JNI_EINVAL;
|
|
|
1966 }
|
|
|
1967 } else if (match_option(option, "vfprintf", &tail)) {
|
|
|
1968 _vfprintf_hook = CAST_TO_FN_PTR(vfprintf_hook_t, option->extraInfo);
|
|
|
1969 } else if (match_option(option, "exit", &tail)) {
|
|
|
1970 _exit_hook = CAST_TO_FN_PTR(exit_hook_t, option->extraInfo);
|
|
|
1971 } else if (match_option(option, "abort", &tail)) {
|
|
|
1972 _abort_hook = CAST_TO_FN_PTR(abort_hook_t, option->extraInfo);
|
|
|
1973 // -XX:+AggressiveHeap
|
|
|
1974 } else if (match_option(option, "-XX:+AggressiveHeap", &tail)) {
|
|
|
1975
|
|
|
1976 // This option inspects the machine and attempts to set various
|
|
|
1977 // parameters to be optimal for long-running, memory allocation
|
|
|
1978 // intensive jobs. It is intended for machines with large
|
|
|
1979 // amounts of cpu and memory.
|
|
|
1980
|
|
|
1981 // initHeapSize is needed since _initial_heap_size is 4 bytes on a 32 bit
|
|
|
1982 // VM, but we may not be able to represent the total physical memory
|
|
|
1983 // available (like having 8gb of memory on a box but using a 32bit VM).
|
|
|
1984 // Thus, we need to make sure we're using a julong for intermediate
|
|
|
1985 // calculations.
|
|
|
1986 julong initHeapSize;
|
|
|
1987 julong total_memory = os::physical_memory();
|
|
|
1988
|
|
|
1989 if (total_memory < (julong)256*M) {
|
|
|
1990 jio_fprintf(defaultStream::error_stream(),
|
|
|
1991 "You need at least 256mb of memory to use -XX:+AggressiveHeap\n");
|
|
|
1992 vm_exit(1);
|
|
|
1993 }
|
|
|
1994
|
|
|
1995 // The heap size is half of available memory, or (at most)
|
|
|
1996 // all of possible memory less 160mb (leaving room for the OS
|
|
|
1997 // when using ISM). This is the maximum; because adaptive sizing
|
|
|
1998 // is turned on below, the actual space used may be smaller.
|
|
|
1999
|
|
|
2000 initHeapSize = MIN2(total_memory / (julong)2,
|
|
|
2001 total_memory - (julong)160*M);
|
|
|
2002
|
|
|
2003 // Make sure that if we have a lot of memory we cap the 32 bit
|
|
|
2004 // process space. The 64bit VM version of this function is a nop.
|
|
|
2005 initHeapSize = os::allocatable_physical_memory(initHeapSize);
|
|
|
2006
|
|
|
2007 // The perm gen is separate but contiguous with the
|
|
|
2008 // object heap (and is reserved with it) so subtract it
|
|
|
2009 // from the heap size.
|
|
|
2010 if (initHeapSize > MaxPermSize) {
|
|
|
2011 initHeapSize = initHeapSize - MaxPermSize;
|
|
|
2012 } else {
|
|
|
2013 warning("AggressiveHeap and MaxPermSize values may conflict");
|
|
|
2014 }
|
|
|
2015
|
|
|
2016 if (FLAG_IS_DEFAULT(MaxHeapSize)) {
|
|
|
2017 FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize);
|
|
|
2018 set_initial_heap_size(MaxHeapSize);
|
|
|
2019 // Currently the minimum size and the initial heap sizes are the same.
|
|
|
2020 set_min_heap_size(initial_heap_size());
|
|
|
2021 }
|
|
|
2022 if (FLAG_IS_DEFAULT(NewSize)) {
|
|
|
2023 // Make the young generation 3/8ths of the total heap.
|
|
|
2024 FLAG_SET_CMDLINE(uintx, NewSize,
|
|
|
2025 ((julong)MaxHeapSize / (julong)8) * (julong)3);
|
|
|
2026 FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize);
|
|
|
2027 }
|
|
|
2028
|
|
|
2029 FLAG_SET_DEFAULT(UseLargePages, true);
|
|
|
2030
|
|
|
2031 // Increase some data structure sizes for efficiency
|
|
|
2032 FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize);
|
|
|
2033 FLAG_SET_CMDLINE(bool, ResizeTLAB, false);
|
|
|
2034 FLAG_SET_CMDLINE(uintx, TLABSize, 256*K);
|
|
|
2035
|
|
|
2036 // See the OldPLABSize comment below, but replace 'after promotion'
|
|
|
2037 // with 'after copying'. YoungPLABSize is the size of the survivor
|
|
|
2038 // space per-gc-thread buffers. The default is 4kw.
|
|
|
2039 FLAG_SET_CMDLINE(uintx, YoungPLABSize, 256*K); // Note: this is in words
|
|
|
2040
|
|
|
2041 // OldPLABSize is the size of the buffers in the old gen that
|
|
|
2042 // UseParallelGC uses to promote live data that doesn't fit in the
|
|
|
2043 // survivor spaces. At any given time, there's one for each gc thread.
|
|
|
2044 // The default size is 1kw. These buffers are rarely used, since the
|
|
|
2045 // survivor spaces are usually big enough. For specjbb, however, there
|
|
|
2046 // are occasions when there's lots of live data in the young gen
|
|
|
2047 // and we end up promoting some of it. We don't have a definite
|
|
|
2048 // explanation for why bumping OldPLABSize helps, but the theory
|
|
|
2049 // is that a bigger PLAB results in retaining something like the
|
|
|
2050 // original allocation order after promotion, which improves mutator
|
|
|
2051 // locality. A minor effect may be that larger PLABs reduce the
|
|
|
2052 // number of PLAB allocation events during gc. The value of 8kw
|
|
|
2053 // was arrived at by experimenting with specjbb.
|
|
|
2054 FLAG_SET_CMDLINE(uintx, OldPLABSize, 8*K); // Note: this is in words
|
|
|
2055
|
|
|
2056 // CompilationPolicyChoice=0 causes the server compiler to adopt
|
|
|
2057 // a more conservative which-method-do-I-compile policy when one
|
|
|
2058 // of the counters maintained by the interpreter trips. The
|
|
|
2059 // result is reduced startup time and improved specjbb and
|
|
|
2060 // alacrity performance. Zero is the default, but we set it
|
|
|
2061 // explicitly here in case the default changes.
|
|
|
2062 // See runtime/compilationPolicy.*.
|
|
|
2063 FLAG_SET_CMDLINE(intx, CompilationPolicyChoice, 0);
|
|
|
2064
|
|
|
2065 // Enable parallel GC and adaptive generation sizing
|
|
|
2066 FLAG_SET_CMDLINE(bool, UseParallelGC, true);
|
|
|
2067 FLAG_SET_DEFAULT(ParallelGCThreads, nof_parallel_gc_threads());
|
|
|
2068
|
|
|
2069 // Encourage steady state memory management
|
|
|
2070 FLAG_SET_CMDLINE(uintx, ThresholdTolerance, 100);
|
|
|
2071
|
|
|
2072 // This appears to improve mutator locality
|
|
|
2073 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false);
|
|
|
2074
|
|
|
2075 // Get around early Solaris scheduling bug
|
|
|
2076 // (affinity vs other jobs on system)
|
|
|
2077 // but disallow DR and offlining (5008695).
|
|
|
2078 FLAG_SET_CMDLINE(bool, BindGCTaskThreadsToCPUs, true);
|
|
|
2079
|
|
|
2080 } else if (match_option(option, "-XX:+NeverTenure", &tail)) {
|
|
|
2081 // The last option must always win.
|
|
|
2082 FLAG_SET_CMDLINE(bool, AlwaysTenure, false);
|
|
|
2083 FLAG_SET_CMDLINE(bool, NeverTenure, true);
|
|
|
2084 } else if (match_option(option, "-XX:+AlwaysTenure", &tail)) {
|
|
|
2085 // The last option must always win.
|
|
|
2086 FLAG_SET_CMDLINE(bool, NeverTenure, false);
|
|
|
2087 FLAG_SET_CMDLINE(bool, AlwaysTenure, true);
|
|
|
2088 } else if (match_option(option, "-XX:+CMSPermGenSweepingEnabled", &tail) ||
|
|
|
2089 match_option(option, "-XX:-CMSPermGenSweepingEnabled", &tail)) {
|
|
|
2090 jio_fprintf(defaultStream::error_stream(),
|
|
|
2091 "Please use CMSClassUnloadingEnabled in place of "
|
|
|
2092 "CMSPermGenSweepingEnabled in the future\n");
|
|
|
2093 } else if (match_option(option, "-XX:+UseGCTimeLimit", &tail)) {
|
|
|
2094 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, true);
|
|
|
2095 jio_fprintf(defaultStream::error_stream(),
|
|
|
2096 "Please use -XX:+UseGCOverheadLimit in place of "
|
|
|
2097 "-XX:+UseGCTimeLimit in the future\n");
|
|
|
2098 } else if (match_option(option, "-XX:-UseGCTimeLimit", &tail)) {
|
|
|
2099 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, false);
|
|
|
2100 jio_fprintf(defaultStream::error_stream(),
|
|
|
2101 "Please use -XX:-UseGCOverheadLimit in place of "
|
|
|
2102 "-XX:-UseGCTimeLimit in the future\n");
|
|
|
2103 // The TLE options are for compatibility with 1.3 and will be
|
|
|
2104 // removed without notice in a future release. These options
|
|
|
2105 // are not to be documented.
|
|
|
2106 } else if (match_option(option, "-XX:MaxTLERatio=", &tail)) {
|
|
|
2107 // No longer used.
|
|
|
2108 } else if (match_option(option, "-XX:+ResizeTLE", &tail)) {
|
|
|
2109 FLAG_SET_CMDLINE(bool, ResizeTLAB, true);
|
|
|
2110 } else if (match_option(option, "-XX:-ResizeTLE", &tail)) {
|
|
|
2111 FLAG_SET_CMDLINE(bool, ResizeTLAB, false);
|
|
|
2112 } else if (match_option(option, "-XX:+PrintTLE", &tail)) {
|
|
|
2113 FLAG_SET_CMDLINE(bool, PrintTLAB, true);
|
|
|
2114 } else if (match_option(option, "-XX:-PrintTLE", &tail)) {
|
|
|
2115 FLAG_SET_CMDLINE(bool, PrintTLAB, false);
|
|
|
2116 } else if (match_option(option, "-XX:TLEFragmentationRatio=", &tail)) {
|
|
|
2117 // No longer used.
|
|
|
2118 } else if (match_option(option, "-XX:TLESize=", &tail)) {
|
|
|
2119 jlong long_tlab_size = 0;
|
|
|
2120 ArgsRange errcode = parse_memory_size(tail, &long_tlab_size, 1);
|
|
|
2121 if (errcode != arg_in_range) {
|
|
|
2122 jio_fprintf(defaultStream::error_stream(),
|
|
|
2123 "Invalid TLAB size: %s\n", option->optionString);
|
|
|
2124 describe_range_error(errcode);
|
|
|
2125 return JNI_EINVAL;
|
|
|
2126 }
|
|
|
2127 FLAG_SET_CMDLINE(uintx, TLABSize, long_tlab_size);
|
|
|
2128 } else if (match_option(option, "-XX:TLEThreadRatio=", &tail)) {
|
|
|
2129 // No longer used.
|
|
|
2130 } else if (match_option(option, "-XX:+UseTLE", &tail)) {
|
|
|
2131 FLAG_SET_CMDLINE(bool, UseTLAB, true);
|
|
|
2132 } else if (match_option(option, "-XX:-UseTLE", &tail)) {
|
|
|
2133 FLAG_SET_CMDLINE(bool, UseTLAB, false);
|
|
|
2134 SOLARIS_ONLY(
|
|
|
2135 } else if (match_option(option, "-XX:+UsePermISM", &tail)) {
|
|
|
2136 warning("-XX:+UsePermISM is obsolete.");
|
|
|
2137 FLAG_SET_CMDLINE(bool, UseISM, true);
|
|
|
2138 } else if (match_option(option, "-XX:-UsePermISM", &tail)) {
|
|
|
2139 FLAG_SET_CMDLINE(bool, UseISM, false);
|
|
|
2140 )
|
|
|
2141 } else if (match_option(option, "-XX:+DisplayVMOutputToStderr", &tail)) {
|
|
|
2142 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, false);
|
|
|
2143 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, true);
|
|
|
2144 } else if (match_option(option, "-XX:+DisplayVMOutputToStdout", &tail)) {
|
|
|
2145 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, false);
|
|
|
2146 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, true);
|
|
|
2147 } else if (match_option(option, "-XX:+ExtendedDTraceProbes", &tail)) {
|
|
|
2148 #ifdef SOLARIS
|
|
|
2149 FLAG_SET_CMDLINE(bool, ExtendedDTraceProbes, true);
|
|
|
2150 FLAG_SET_CMDLINE(bool, DTraceMethodProbes, true);
|
|
|
2151 FLAG_SET_CMDLINE(bool, DTraceAllocProbes, true);
|
|
|
2152 FLAG_SET_CMDLINE(bool, DTraceMonitorProbes, true);
|
|
|
2153 #else // ndef SOLARIS
|
|
|
2154 jio_fprintf(defaultStream::error_stream(),
|
|
|
2155 "ExtendedDTraceProbes flag is only applicable on Solaris\n");
|
|
|
2156 return JNI_EINVAL;
|
|
|
2157 #endif // ndef SOLARIS
|
|
|
2158 } else
|
|
|
2159 #ifdef ASSERT
|
|
|
2160 if (match_option(option, "-XX:+FullGCALot", &tail)) {
|
|
|
2161 FLAG_SET_CMDLINE(bool, FullGCALot, true);
|
|
|
2162 // disable scavenge before parallel mark-compact
|
|
|
2163 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false);
|
|
|
2164 } else
|
|
|
2165 #endif
|
|
|
2166 if (match_option(option, "-XX:ParCMSPromoteBlocksToClaim=", &tail)) {
|
|
|
2167 julong cms_blocks_to_claim = (julong)atol(tail);
|
|
|
2168 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim);
|
|
|
2169 jio_fprintf(defaultStream::error_stream(),
|
|
|
2170 "Please use -XX:CMSParPromoteBlocksToClaim in place of "
|
|
|
2171 "-XX:ParCMSPromoteBlocksToClaim in the future\n");
|
|
|
2172 } else
|
|
|
2173 if (match_option(option, "-XX:ParallelGCOldGenAllocBufferSize=", &tail)) {
|
|
|
2174 jlong old_plab_size = 0;
|
|
|
2175 ArgsRange errcode = parse_memory_size(tail, &old_plab_size, 1);
|
|
|
2176 if (errcode != arg_in_range) {
|
|
|
2177 jio_fprintf(defaultStream::error_stream(),
|
|
|
2178 "Invalid old PLAB size: %s\n", option->optionString);
|
|
|
2179 describe_range_error(errcode);
|
|
|
2180 return JNI_EINVAL;
|
|
|
2181 }
|
|
|
2182 FLAG_SET_CMDLINE(uintx, OldPLABSize, (julong)old_plab_size);
|
|
|
2183 jio_fprintf(defaultStream::error_stream(),
|
|
|
2184 "Please use -XX:OldPLABSize in place of "
|
|
|
2185 "-XX:ParallelGCOldGenAllocBufferSize in the future\n");
|
|
|
2186 } else
|
|
|
2187 if (match_option(option, "-XX:ParallelGCToSpaceAllocBufferSize=", &tail)) {
|
|
|
2188 jlong young_plab_size = 0;
|
|
|
2189 ArgsRange errcode = parse_memory_size(tail, &young_plab_size, 1);
|
|
|
2190 if (errcode != arg_in_range) {
|
|
|
2191 jio_fprintf(defaultStream::error_stream(),
|
|
|
2192 "Invalid young PLAB size: %s\n", option->optionString);
|
|
|
2193 describe_range_error(errcode);
|
|
|
2194 return JNI_EINVAL;
|
|
|
2195 }
|
|
|
2196 FLAG_SET_CMDLINE(uintx, YoungPLABSize, (julong)young_plab_size);
|
|
|
2197 jio_fprintf(defaultStream::error_stream(),
|
|
|
2198 "Please use -XX:YoungPLABSize in place of "
|
|
|
2199 "-XX:ParallelGCToSpaceAllocBufferSize in the future\n");
|
|
|
2200 } else
|
|
|
2201 if (match_option(option, "-XX:", &tail)) { // -XX:xxxx
|
|
|
2202 // Skip -XX:Flags= since that case has already been handled
|
|
|
2203 if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) {
|
|
|
2204 if (!process_argument(tail, args->ignoreUnrecognized, origin)) {
|
|
|
2205 return JNI_EINVAL;
|
|
|
2206 }
|
|
|
2207 }
|
|
|
2208 // Unknown option
|
|
|
2209 } else if (is_bad_option(option, args->ignoreUnrecognized)) {
|
|
|
2210 return JNI_ERR;
|
|
|
2211 }
|
|
|
2212 }
|
|
|
2213
|
|
|
2214 return JNI_OK;
|
|
|
2215 }
|
|
|
2216
|
|
|
2217 jint Arguments::finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required) {
|
|
|
2218 // This must be done after all -D arguments have been processed.
|
|
|
2219 scp_p->expand_endorsed();
|
|
|
2220
|
|
|
2221 if (scp_assembly_required || scp_p->get_endorsed() != NULL) {
|
|
|
2222 // Assemble the bootclasspath elements into the final path.
|
|
|
2223 Arguments::set_sysclasspath(scp_p->combined_path());
|
|
|
2224 }
|
|
|
2225
|
|
|
2226 // This must be done after all arguments have been processed.
|
|
|
2227 // java_compiler() true means set to "NONE" or empty.
|
|
|
2228 if (java_compiler() && !xdebug_mode()) {
|
|
|
2229 // For backwards compatibility, we switch to interpreted mode if
|
|
|
2230 // -Djava.compiler="NONE" or "" is specified AND "-Xdebug" was
|
|
|
2231 // not specified.
|
|
|
2232 set_mode_flags(_int);
|
|
|
2233 }
|
|
|
2234 if (CompileThreshold == 0) {
|
|
|
2235 set_mode_flags(_int);
|
|
|
2236 }
|
|
|
2237
|
|
|
2238 #ifdef TIERED
|
|
|
2239 // If we are using tiered compilation in the tiered vm then c1 will
|
|
|
2240 // do the profiling and we don't want to waste that time in the
|
|
|
2241 // interpreter.
|
|
|
2242 if (TieredCompilation) {
|
|
|
2243 ProfileInterpreter = false;
|
|
|
2244 } else {
|
|
|
2245 // Since we are running vanilla server we must adjust the compile threshold
|
|
|
2246 // unless the user has already adjusted it because the default threshold assumes
|
|
|
2247 // we will run tiered.
|
|
|
2248
|
|
|
2249 if (FLAG_IS_DEFAULT(CompileThreshold)) {
|
|
|
2250 CompileThreshold = Tier2CompileThreshold;
|
|
|
2251 }
|
|
|
2252 }
|
|
|
2253 #endif // TIERED
|
|
|
2254
|
|
|
2255 #ifndef COMPILER2
|
|
|
2256 // Don't degrade server performance for footprint
|
|
|
2257 if (FLAG_IS_DEFAULT(UseLargePages) &&
|
|
|
2258 MaxHeapSize < LargePageHeapSizeThreshold) {
|
|
|
2259 // No need for large granularity pages w/small heaps.
|
|
|
2260 // Note that large pages are enabled/disabled for both the
|
|
|
2261 // Java heap and the code cache.
|
|
|
2262 FLAG_SET_DEFAULT(UseLargePages, false);
|
|
|
2263 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseMPSS, false));
|
|
|
2264 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseISM, false));
|
|
|
2265 }
|
|
|
2266 #else
|
|
|
2267 if (!FLAG_IS_DEFAULT(OptoLoopAlignment) && FLAG_IS_DEFAULT(MaxLoopPad)) {
|
|
|
2268 FLAG_SET_DEFAULT(MaxLoopPad, OptoLoopAlignment-1);
|
|
|
2269 }
|
|
|
2270 #endif
|
|
|
2271
|
|
|
2272 if (!check_vm_args_consistency()) {
|
|
|
2273 return JNI_ERR;
|
|
|
2274 }
|
|
|
2275
|
|
|
2276 return JNI_OK;
|
|
|
2277 }
|
|
|
2278
|
|
|
2279 jint Arguments::parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) {
|
|
|
2280 return parse_options_environment_variable("_JAVA_OPTIONS", scp_p,
|
|
|
2281 scp_assembly_required_p);
|
|
|
2282 }
|
|
|
2283
|
|
|
2284 jint Arguments::parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) {
|
|
|
2285 return parse_options_environment_variable("JAVA_TOOL_OPTIONS", scp_p,
|
|
|
2286 scp_assembly_required_p);
|
|
|
2287 }
|
|
|
2288
|
|
|
2289 jint Arguments::parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p) {
|
|
|
2290 const int N_MAX_OPTIONS = 64;
|
|
|
2291 const int OPTION_BUFFER_SIZE = 1024;
|
|
|
2292 char buffer[OPTION_BUFFER_SIZE];
|
|
|
2293
|
|
|
2294 // The variable will be ignored if it exceeds the length of the buffer.
|
|
|
2295 // Don't check this variable if user has special privileges
|
|
|
2296 // (e.g. unix su command).
|
|
|
2297 if (os::getenv(name, buffer, sizeof(buffer)) &&
|
|
|
2298 !os::have_special_privileges()) {
|
|
|
2299 JavaVMOption options[N_MAX_OPTIONS]; // Construct option array
|
|
|
2300 jio_fprintf(defaultStream::error_stream(),
|
|
|
2301 "Picked up %s: %s\n", name, buffer);
|
|
|
2302 char* rd = buffer; // pointer to the input string (rd)
|
|
|
2303 int i;
|
|
|
2304 for (i = 0; i < N_MAX_OPTIONS;) { // repeat for all options in the input string
|
|
|
2305 while (isspace(*rd)) rd++; // skip whitespace
|
|
|
2306 if (*rd == 0) break; // we re done when the input string is read completely
|
|
|
2307
|
|
|
2308 // The output, option string, overwrites the input string.
|
|
|
2309 // Because of quoting, the pointer to the option string (wrt) may lag the pointer to
|
|
|
2310 // input string (rd).
|
|
|
2311 char* wrt = rd;
|
|
|
2312
|
|
|
2313 options[i++].optionString = wrt; // Fill in option
|
|
|
2314 while (*rd != 0 && !isspace(*rd)) { // unquoted strings terminate with a space or NULL
|
|
|
2315 if (*rd == '\'' || *rd == '"') { // handle a quoted string
|
|
|
2316 int quote = *rd; // matching quote to look for
|
|
|
2317 rd++; // don't copy open quote
|
|
|
2318 while (*rd != quote) { // include everything (even spaces) up until quote
|
|
|
2319 if (*rd == 0) { // string termination means unmatched string
|
|
|
2320 jio_fprintf(defaultStream::error_stream(),
|
|
|
2321 "Unmatched quote in %s\n", name);
|
|
|
2322 return JNI_ERR;
|
|
|
2323 }
|
|
|
2324 *wrt++ = *rd++; // copy to option string
|
|
|
2325 }
|
|
|
2326 rd++; // don't copy close quote
|
|
|
2327 } else {
|
|
|
2328 *wrt++ = *rd++; // copy to option string
|
|
|
2329 }
|
|
|
2330 }
|
|
|
2331 // Need to check if we're done before writing a NULL,
|
|
|
2332 // because the write could be to the byte that rd is pointing to.
|
|
|
2333 if (*rd++ == 0) {
|
|
|
2334 *wrt = 0;
|
|
|
2335 break;
|
|
|
2336 }
|
|
|
2337 *wrt = 0; // Zero terminate option
|
|
|
2338 }
|
|
|
2339 // Construct JavaVMInitArgs structure and parse as if it was part of the command line
|
|
|
2340 JavaVMInitArgs vm_args;
|
|
|
2341 vm_args.version = JNI_VERSION_1_2;
|
|
|
2342 vm_args.options = options;
|
|
|
2343 vm_args.nOptions = i;
|
|
|
2344 vm_args.ignoreUnrecognized = false;
|
|
|
2345
|
|
|
2346 if (PrintVMOptions) {
|
|
|
2347 const char* tail;
|
|
|
2348 for (int i = 0; i < vm_args.nOptions; i++) {
|
|
|
2349 const JavaVMOption *option = vm_args.options + i;
|
|
|
2350 if (match_option(option, "-XX:", &tail)) {
|
|
|
2351 logOption(tail);
|
|
|
2352 }
|
|
|
2353 }
|
|
|
2354 }
|
|
|
2355
|
|
|
2356 return(parse_each_vm_init_arg(&vm_args, scp_p, scp_assembly_required_p, ENVIRON_VAR));
|
|
|
2357 }
|
|
|
2358 return JNI_OK;
|
|
|
2359 }
|
|
|
2360
|
|
|
2361 // Parse entry point called from JNI_CreateJavaVM
|
|
|
2362
|
|
|
2363 jint Arguments::parse(const JavaVMInitArgs* args) {
|
|
|
2364
|
|
|
2365 // Sharing support
|
|
|
2366 // Construct the path to the archive
|
|
|
2367 char jvm_path[JVM_MAXPATHLEN];
|
|
|
2368 os::jvm_path(jvm_path, sizeof(jvm_path));
|
|
|
2369 #ifdef TIERED
|
|
|
2370 if (strstr(jvm_path, "client") != NULL) {
|
|
|
2371 force_client_mode = true;
|
|
|
2372 }
|
|
|
2373 #endif // TIERED
|
|
|
2374 char *end = strrchr(jvm_path, *os::file_separator());
|
|
|
2375 if (end != NULL) *end = '\0';
|
|
|
2376 char *shared_archive_path = NEW_C_HEAP_ARRAY(char, strlen(jvm_path) +
|
|
|
2377 strlen(os::file_separator()) + 20);
|
|
|
2378 if (shared_archive_path == NULL) return JNI_ENOMEM;
|
|
|
2379 strcpy(shared_archive_path, jvm_path);
|
|
|
2380 strcat(shared_archive_path, os::file_separator());
|
|
|
2381 strcat(shared_archive_path, "classes");
|
|
|
2382 DEBUG_ONLY(strcat(shared_archive_path, "_g");)
|
|
|
2383 strcat(shared_archive_path, ".jsa");
|
|
|
2384 SharedArchivePath = shared_archive_path;
|
|
|
2385
|
|
|
2386 // Remaining part of option string
|
|
|
2387 const char* tail;
|
|
|
2388
|
|
|
2389 // If flag "-XX:Flags=flags-file" is used it will be the first option to be processed.
|
|
|
2390 bool settings_file_specified = false;
|
|
|
2391 int index;
|
|
|
2392 for (index = 0; index < args->nOptions; index++) {
|
|
|
2393 const JavaVMOption *option = args->options + index;
|
|
|
2394 if (match_option(option, "-XX:Flags=", &tail)) {
|
|
|
2395 if (!process_settings_file(tail, true, args->ignoreUnrecognized)) {
|
|
|
2396 return JNI_EINVAL;
|
|
|
2397 }
|
|
|
2398 settings_file_specified = true;
|
|
|
2399 }
|
|
|
2400 if (match_option(option, "-XX:+PrintVMOptions", &tail)) {
|
|
|
2401 PrintVMOptions = true;
|
|
|
2402 }
|
|
|
2403 }
|
|
|
2404
|
|
|
2405 // Parse default .hotspotrc settings file
|
|
|
2406 if (!settings_file_specified) {
|
|
|
2407 if (!process_settings_file(".hotspotrc", false, args->ignoreUnrecognized)) {
|
|
|
2408 return JNI_EINVAL;
|
|
|
2409 }
|
|
|
2410 }
|
|
|
2411
|
|
|
2412 if (PrintVMOptions) {
|
|
|
2413 for (index = 0; index < args->nOptions; index++) {
|
|
|
2414 const JavaVMOption *option = args->options + index;
|
|
|
2415 if (match_option(option, "-XX:", &tail)) {
|
|
|
2416 logOption(tail);
|
|
|
2417 }
|
|
|
2418 }
|
|
|
2419 }
|
|
|
2420
|
|
|
2421 // Parse JavaVMInitArgs structure passed in, as well as JAVA_TOOL_OPTIONS and _JAVA_OPTIONS
|
|
|
2422 jint result = parse_vm_init_args(args);
|
|
|
2423 if (result != JNI_OK) {
|
|
|
2424 return result;
|
|
|
2425 }
|
|
|
2426
|
|
|
2427 #ifndef PRODUCT
|
|
|
2428 if (TraceBytecodesAt != 0) {
|
|
|
2429 TraceBytecodes = true;
|
|
|
2430 }
|
|
|
2431 if (CountCompiledCalls) {
|
|
|
2432 if (UseCounterDecay) {
|
|
|
2433 warning("UseCounterDecay disabled because CountCalls is set");
|
|
|
2434 UseCounterDecay = false;
|
|
|
2435 }
|
|
|
2436 }
|
|
|
2437 #endif // PRODUCT
|
|
|
2438
|
|
|
2439 if (PrintGCDetails) {
|
|
|
2440 // Turn on -verbose:gc options as well
|
|
|
2441 PrintGC = true;
|
|
|
2442 if (FLAG_IS_DEFAULT(TraceClassUnloading)) {
|
|
|
2443 TraceClassUnloading = true;
|
|
|
2444 }
|
|
|
2445 }
|
|
|
2446
|
|
|
2447 #ifdef SERIALGC
|
|
|
2448 set_serial_gc_flags();
|
|
|
2449 #endif // SERIALGC
|
|
|
2450 #ifdef KERNEL
|
|
|
2451 no_shared_spaces();
|
|
|
2452 #endif // KERNEL
|
|
|
2453
|
|
|
2454 // Set some flags for ParallelGC if needed.
|
|
|
2455 set_parallel_gc_flags();
|
|
|
2456
|
|
|
2457 // Set some flags for CMS and/or ParNew collectors, as needed.
|
|
|
2458 set_cms_and_parnew_gc_flags();
|
|
|
2459
|
|
|
2460 // Set flags based on ergonomics.
|
|
|
2461 set_ergonomics_flags();
|
|
|
2462
|
|
|
2463 #ifdef SERIALGC
|
|
|
2464 assert(verify_serial_gc_flags(), "SerialGC unset");
|
|
|
2465 #endif // SERIALGC
|
|
|
2466
|
|
|
2467 // Set bytecode rewriting flags
|
|
|
2468 set_bytecode_flags();
|
|
|
2469
|
|
|
2470 // Set flags if Aggressive optimization flags (-XX:+AggressiveOpts) enabled.
|
|
|
2471 set_aggressive_opts_flags();
|
|
|
2472
|
|
|
2473 #ifdef CC_INTERP
|
|
|
2474 // Biased locking is not implemented with c++ interpreter
|
|
|
2475 FLAG_SET_DEFAULT(UseBiasedLocking, false);
|
|
|
2476 #endif /* CC_INTERP */
|
|
|
2477
|
|
|
2478 if (PrintCommandLineFlags) {
|
|
|
2479 CommandLineFlags::printSetFlags();
|
|
|
2480 }
|
|
|
2481
|
|
|
2482 return JNI_OK;
|
|
|
2483 }
|
|
|
2484
|
|
|
2485 int Arguments::PropertyList_count(SystemProperty* pl) {
|
|
|
2486 int count = 0;
|
|
|
2487 while(pl != NULL) {
|
|
|
2488 count++;
|
|
|
2489 pl = pl->next();
|
|
|
2490 }
|
|
|
2491 return count;
|
|
|
2492 }
|
|
|
2493
|
|
|
2494 const char* Arguments::PropertyList_get_value(SystemProperty *pl, const char* key) {
|
|
|
2495 assert(key != NULL, "just checking");
|
|
|
2496 SystemProperty* prop;
|
|
|
2497 for (prop = pl; prop != NULL; prop = prop->next()) {
|
|
|
2498 if (strcmp(key, prop->key()) == 0) return prop->value();
|
|
|
2499 }
|
|
|
2500 return NULL;
|
|
|
2501 }
|
|
|
2502
|
|
|
2503 const char* Arguments::PropertyList_get_key_at(SystemProperty *pl, int index) {
|
|
|
2504 int count = 0;
|
|
|
2505 const char* ret_val = NULL;
|
|
|
2506
|
|
|
2507 while(pl != NULL) {
|
|
|
2508 if(count >= index) {
|
|
|
2509 ret_val = pl->key();
|
|
|
2510 break;
|
|
|
2511 }
|
|
|
2512 count++;
|
|
|
2513 pl = pl->next();
|
|
|
2514 }
|
|
|
2515
|
|
|
2516 return ret_val;
|
|
|
2517 }
|
|
|
2518
|
|
|
2519 char* Arguments::PropertyList_get_value_at(SystemProperty* pl, int index) {
|
|
|
2520 int count = 0;
|
|
|
2521 char* ret_val = NULL;
|
|
|
2522
|
|
|
2523 while(pl != NULL) {
|
|
|
2524 if(count >= index) {
|
|
|
2525 ret_val = pl->value();
|
|
|
2526 break;
|
|
|
2527 }
|
|
|
2528 count++;
|
|
|
2529 pl = pl->next();
|
|
|
2530 }
|
|
|
2531
|
|
|
2532 return ret_val;
|
|
|
2533 }
|
|
|
2534
|
|
|
2535 void Arguments::PropertyList_add(SystemProperty** plist, SystemProperty *new_p) {
|
|
|
2536 SystemProperty* p = *plist;
|
|
|
2537 if (p == NULL) {
|
|
|
2538 *plist = new_p;
|
|
|
2539 } else {
|
|
|
2540 while (p->next() != NULL) {
|
|
|
2541 p = p->next();
|
|
|
2542 }
|
|
|
2543 p->set_next(new_p);
|
|
|
2544 }
|
|
|
2545 }
|
|
|
2546
|
|
|
2547 void Arguments::PropertyList_add(SystemProperty** plist, const char* k, char* v) {
|
|
|
2548 if (plist == NULL)
|
|
|
2549 return;
|
|
|
2550
|
|
|
2551 SystemProperty* new_p = new SystemProperty(k, v, true);
|
|
|
2552 PropertyList_add(plist, new_p);
|
|
|
2553 }
|
|
|
2554
|
|
|
2555 // This add maintains unique property key in the list.
|
|
|
2556 void Arguments::PropertyList_unique_add(SystemProperty** plist, const char* k, char* v) {
|
|
|
2557 if (plist == NULL)
|
|
|
2558 return;
|
|
|
2559
|
|
|
2560 // If property key exist then update with new value.
|
|
|
2561 SystemProperty* prop;
|
|
|
2562 for (prop = *plist; prop != NULL; prop = prop->next()) {
|
|
|
2563 if (strcmp(k, prop->key()) == 0) {
|
|
|
2564 prop->set_value(v);
|
|
|
2565 return;
|
|
|
2566 }
|
|
|
2567 }
|
|
|
2568
|
|
|
2569 PropertyList_add(plist, k, v);
|
|
|
2570 }
|
|
|
2571
|
|
|
2572 #ifdef KERNEL
|
|
|
2573 char *Arguments::get_kernel_properties() {
|
|
|
2574 // Find properties starting with kernel and append them to string
|
|
|
2575 // We need to find out how long they are first because the URL's that they
|
|
|
2576 // might point to could get long.
|
|
|
2577 int length = 0;
|
|
|
2578 SystemProperty* prop;
|
|
|
2579 for (prop = _system_properties; prop != NULL; prop = prop->next()) {
|
|
|
2580 if (strncmp(prop->key(), "kernel.", 7 ) == 0) {
|
|
|
2581 length += (strlen(prop->key()) + strlen(prop->value()) + 5); // "-D ="
|
|
|
2582 }
|
|
|
2583 }
|
|
|
2584 // Add one for null terminator.
|
|
|
2585 char *props = AllocateHeap(length + 1, "get_kernel_properties");
|
|
|
2586 if (length != 0) {
|
|
|
2587 int pos = 0;
|
|
|
2588 for (prop = _system_properties; prop != NULL; prop = prop->next()) {
|
|
|
2589 if (strncmp(prop->key(), "kernel.", 7 ) == 0) {
|
|
|
2590 jio_snprintf(&props[pos], length-pos,
|
|
|
2591 "-D%s=%s ", prop->key(), prop->value());
|
|
|
2592 pos = strlen(props);
|
|
|
2593 }
|
|
|
2594 }
|
|
|
2595 }
|
|
|
2596 // null terminate props in case of null
|
|
|
2597 props[length] = '\0';
|
|
|
2598 return props;
|
|
|
2599 }
|
|
|
2600 #endif // KERNEL
|
|
|
2601
|
|
|
2602 // Copies src into buf, replacing "%%" with "%" and "%p" with pid
|
|
|
2603 // Returns true if all of the source pointed by src has been copied over to
|
|
|
2604 // the destination buffer pointed by buf. Otherwise, returns false.
|
|
|
2605 // Notes:
|
|
|
2606 // 1. If the length (buflen) of the destination buffer excluding the
|
|
|
2607 // NULL terminator character is not long enough for holding the expanded
|
|
|
2608 // pid characters, it also returns false instead of returning the partially
|
|
|
2609 // expanded one.
|
|
|
2610 // 2. The passed in "buflen" should be large enough to hold the null terminator.
|
|
|
2611 bool Arguments::copy_expand_pid(const char* src, size_t srclen,
|
|
|
2612 char* buf, size_t buflen) {
|
|
|
2613 const char* p = src;
|
|
|
2614 char* b = buf;
|
|
|
2615 const char* src_end = &src[srclen];
|
|
|
2616 char* buf_end = &buf[buflen - 1];
|
|
|
2617
|
|
|
2618 while (p < src_end && b < buf_end) {
|
|
|
2619 if (*p == '%') {
|
|
|
2620 switch (*(++p)) {
|
|
|
2621 case '%': // "%%" ==> "%"
|
|
|
2622 *b++ = *p++;
|
|
|
2623 break;
|
|
|
2624 case 'p': { // "%p" ==> current process id
|
|
|
2625 // buf_end points to the character before the last character so
|
|
|
2626 // that we could write '\0' to the end of the buffer.
|
|
|
2627 size_t buf_sz = buf_end - b + 1;
|
|
|
2628 int ret = jio_snprintf(b, buf_sz, "%d", os::current_process_id());
|
|
|
2629
|
|
|
2630 // if jio_snprintf fails or the buffer is not long enough to hold
|
|
|
2631 // the expanded pid, returns false.
|
|
|
2632 if (ret < 0 || ret >= (int)buf_sz) {
|
|
|
2633 return false;
|
|
|
2634 } else {
|
|
|
2635 b += ret;
|
|
|
2636 assert(*b == '\0', "fail in copy_expand_pid");
|
|
|
2637 if (p == src_end && b == buf_end + 1) {
|
|
|
2638 // reach the end of the buffer.
|
|
|
2639 return true;
|
|
|
2640 }
|
|
|
2641 }
|
|
|
2642 p++;
|
|
|
2643 break;
|
|
|
2644 }
|
|
|
2645 default :
|
|
|
2646 *b++ = '%';
|
|
|
2647 }
|
|
|
2648 } else {
|
|
|
2649 *b++ = *p++;
|
|
|
2650 }
|
|
|
2651 }
|
|
|
2652 *b = '\0';
|
|
|
2653 return (p == src_end); // return false if not all of the source was copied
|
|
|
2654 }
|
