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/_globals.cpp.incl"
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27
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28
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29 RUNTIME_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PD_DEVELOPER_FLAG, \
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30 MATERIALIZE_PRODUCT_FLAG, MATERIALIZE_PD_PRODUCT_FLAG, \
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31 MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_NOTPRODUCT_FLAG, \
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32 MATERIALIZE_MANAGEABLE_FLAG, MATERIALIZE_PRODUCT_RW_FLAG)
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33
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34 RUNTIME_OS_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PD_DEVELOPER_FLAG, \
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35 MATERIALIZE_PRODUCT_FLAG, MATERIALIZE_PD_PRODUCT_FLAG, \
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36 MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_NOTPRODUCT_FLAG)
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37
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38 bool Flag::is_unlocker() const {
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39 return strcmp(name, "UnlockDiagnosticVMOptions") == 0;
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40 }
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41
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42 bool Flag::is_unlocked() const {
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43 if (strcmp(kind, "{diagnostic}") == 0) {
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44 return UnlockDiagnosticVMOptions;
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45 } else {
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46 return true;
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47 }
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48 }
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49
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50 bool Flag::is_writeable() const {
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51 return (strcmp(kind, "{manageable}") == 0 || strcmp(kind, "{product rw}") == 0);
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52 }
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53
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54 // All flags except "manageable" are assumed internal flags.
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55 // Long term, we need to define a mechanism to specify which flags
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56 // are external/stable and change this function accordingly.
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57 bool Flag::is_external() const {
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58 return (strcmp(kind, "{manageable}") == 0);
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59 }
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60
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61 // Length of format string (e.g. "%.1234s") for printing ccstr below
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62 #define FORMAT_BUFFER_LEN 16
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63
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64 void Flag::print_on(outputStream* st) {
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65 st->print("%5s %-35s %c= ", type, name, (origin != DEFAULT ? ':' : ' '));
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66 if (is_bool()) st->print("%-16s", get_bool() ? "true" : "false");
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67 if (is_intx()) st->print("%-16ld", get_intx());
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68 if (is_uintx()) st->print("%-16lu", get_uintx());
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69 if (is_ccstr()) {
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70 const char* cp = get_ccstr();
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71 const char* eol;
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72 while ((eol = strchr(cp, '\n')) != NULL) {
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73 char format_buffer[FORMAT_BUFFER_LEN];
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74 size_t llen = pointer_delta(eol, cp, sizeof(char));
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75 jio_snprintf(format_buffer, FORMAT_BUFFER_LEN,
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76 "%%." SIZE_FORMAT "s", llen);
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77 st->print(format_buffer, cp);
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78 st->cr();
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79 cp = eol+1;
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80 st->print("%5s %-35s += ", "", name);
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81 }
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82 st->print("%-16s", cp);
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83 }
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84 st->print(" %s", kind);
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85 st->cr();
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86 }
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87
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88 void Flag::print_as_flag(outputStream* st) {
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89 if (is_bool()) {
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90 st->print("-XX:%s%s", get_bool() ? "+" : "-", name);
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91 } else if (is_intx()) {
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92 st->print("-XX:%s=" INTX_FORMAT, name, get_intx());
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93 } else if (is_uintx()) {
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94 st->print("-XX:%s=" UINTX_FORMAT, name, get_uintx());
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95 } else if (is_ccstr()) {
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96 st->print("-XX:%s=", name);
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97 // Need to turn embedded '\n's back into separate arguments
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98 // Not so efficient to print one character at a time,
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99 // but the choice is to do the transformation to a buffer
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100 // and print that. And this need not be efficient.
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101 for (const char* cp = get_ccstr(); *cp != '\0'; cp += 1) {
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102 switch (*cp) {
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103 default:
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104 st->print("%c", *cp);
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105 break;
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106 case '\n':
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107 st->print(" -XX:%s=", name);
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108 break;
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109 }
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110 }
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111 } else {
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112 ShouldNotReachHere();
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113 }
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114 }
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115
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116 // 4991491 do not "optimize out" the was_set false values: omitting them
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117 // tickles a Microsoft compiler bug causing flagTable to be malformed
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118
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119 #define RUNTIME_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{product}", DEFAULT },
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120 #define RUNTIME_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{pd product}", DEFAULT },
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121 #define RUNTIME_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{diagnostic}", DEFAULT },
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122 #define RUNTIME_MANAGEABLE_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{manageable}", DEFAULT },
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123 #define RUNTIME_PRODUCT_RW_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{product rw}", DEFAULT },
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124
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125 #ifdef PRODUCT
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126 #define RUNTIME_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
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127 #define RUNTIME_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */
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128 #define RUNTIME_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc)
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129 #else
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130 #define RUNTIME_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "", DEFAULT },
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131 #define RUNTIME_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{pd}", DEFAULT },
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132 #define RUNTIME_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{notproduct}", DEFAULT },
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133 #endif
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134
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135 #define C1_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C1 product}", DEFAULT },
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136 #define C1_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{C1 pd product}", DEFAULT },
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137 #ifdef PRODUCT
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138 #define C1_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
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139 #define C1_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */
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140 #define C1_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc)
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141 #else
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142 #define C1_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C1}", DEFAULT },
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143 #define C1_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{C1 pd}", DEFAULT },
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144 #define C1_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C1 notproduct}", DEFAULT },
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145 #endif
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146
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147
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148 #define C2_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C2 product}", DEFAULT },
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149 #define C2_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{C2 pd product}", DEFAULT },
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150 #define C2_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C2 diagnostic}", DEFAULT },
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151 #ifdef PRODUCT
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152 #define C2_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
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153 #define C2_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */
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154 #define C2_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc)
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155 #else
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156 #define C2_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C2}", DEFAULT },
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157 #define C2_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{C2 pd}", DEFAULT },
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158 #define C2_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C2 notproduct}", DEFAULT },
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159 #endif
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160
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161
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162 static Flag flagTable[] = {
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163 RUNTIME_FLAGS(RUNTIME_DEVELOP_FLAG_STRUCT, RUNTIME_PD_DEVELOP_FLAG_STRUCT, RUNTIME_PRODUCT_FLAG_STRUCT, RUNTIME_PD_PRODUCT_FLAG_STRUCT, RUNTIME_DIAGNOSTIC_FLAG_STRUCT, RUNTIME_NOTPRODUCT_FLAG_STRUCT, RUNTIME_MANAGEABLE_FLAG_STRUCT, RUNTIME_PRODUCT_RW_FLAG_STRUCT)
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164 RUNTIME_OS_FLAGS(RUNTIME_DEVELOP_FLAG_STRUCT, RUNTIME_PD_DEVELOP_FLAG_STRUCT, RUNTIME_PRODUCT_FLAG_STRUCT, RUNTIME_PD_PRODUCT_FLAG_STRUCT, RUNTIME_DIAGNOSTIC_FLAG_STRUCT, RUNTIME_NOTPRODUCT_FLAG_STRUCT)
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165 #ifdef COMPILER1
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166 C1_FLAGS(C1_DEVELOP_FLAG_STRUCT, C1_PD_DEVELOP_FLAG_STRUCT, C1_PRODUCT_FLAG_STRUCT, C1_PD_PRODUCT_FLAG_STRUCT, C1_NOTPRODUCT_FLAG_STRUCT)
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167 #endif
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168 #ifdef COMPILER2
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169 C2_FLAGS(C2_DEVELOP_FLAG_STRUCT, C2_PD_DEVELOP_FLAG_STRUCT, C2_PRODUCT_FLAG_STRUCT, C2_PD_PRODUCT_FLAG_STRUCT, C2_DIAGNOSTIC_FLAG_STRUCT, C2_NOTPRODUCT_FLAG_STRUCT)
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170 #endif
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171 {0, NULL, NULL}
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172 };
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173
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174 Flag* Flag::flags = flagTable;
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175 size_t Flag::numFlags = (sizeof(flagTable) / sizeof(Flag));
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176
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177 inline bool str_equal(const char* s, char* q, size_t len) {
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178 // s is null terminated, q is not!
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179 if (strlen(s) != (unsigned int) len) return false;
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180 return strncmp(s, q, len) == 0;
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181 }
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182
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183 Flag* Flag::find_flag(char* name, size_t length) {
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184 for (Flag* current = &flagTable[0]; current->name; current++) {
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185 if (str_equal(current->name, name, length)) {
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186 if (!(current->is_unlocked() || current->is_unlocker())) {
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187 // disable use of diagnostic flags until they are unlocked
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188 return NULL;
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189 }
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190 return current;
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191 }
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192 }
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193 return NULL;
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194 }
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195
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196 // Returns the address of the index'th element
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197 static Flag* address_of_flag(CommandLineFlagWithType flag) {
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198 assert((size_t)flag < Flag::numFlags, "bad command line flag index");
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199 return &Flag::flags[flag];
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200 }
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201
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202 bool CommandLineFlagsEx::is_default(CommandLineFlag flag) {
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203 assert((size_t)flag < Flag::numFlags, "bad command line flag index");
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204 Flag* f = &Flag::flags[flag];
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205 return (f->origin == DEFAULT);
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206 }
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207
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208 bool CommandLineFlags::wasSetOnCmdline(const char* name, bool* value) {
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209 Flag* result = Flag::find_flag((char*)name, strlen(name));
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210 if (result == NULL) return false;
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211 *value = (result->origin == COMMAND_LINE);
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212 return true;
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213 }
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214
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215 bool CommandLineFlags::boolAt(char* name, size_t len, bool* value) {
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216 Flag* result = Flag::find_flag(name, len);
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217 if (result == NULL) return false;
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218 if (!result->is_bool()) return false;
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219 *value = result->get_bool();
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220 return true;
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221 }
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222
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223 bool CommandLineFlags::boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin) {
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224 Flag* result = Flag::find_flag(name, len);
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225 if (result == NULL) return false;
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226 if (!result->is_bool()) return false;
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227 bool old_value = result->get_bool();
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228 result->set_bool(*value);
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229 *value = old_value;
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230 result->origin = origin;
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231 return true;
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232 }
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233
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234 void CommandLineFlagsEx::boolAtPut(CommandLineFlagWithType flag, bool value, FlagValueOrigin origin) {
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235 Flag* faddr = address_of_flag(flag);
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236 guarantee(faddr != NULL && faddr->is_bool(), "wrong flag type");
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237 faddr->set_bool(value);
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238 faddr->origin = origin;
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239 }
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240
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241 bool CommandLineFlags::intxAt(char* name, size_t len, intx* value) {
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242 Flag* result = Flag::find_flag(name, len);
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243 if (result == NULL) return false;
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244 if (!result->is_intx()) return false;
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245 *value = result->get_intx();
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246 return true;
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247 }
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248
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249 bool CommandLineFlags::intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin) {
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250 Flag* result = Flag::find_flag(name, len);
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251 if (result == NULL) return false;
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252 if (!result->is_intx()) return false;
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253 intx old_value = result->get_intx();
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254 result->set_intx(*value);
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255 *value = old_value;
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256 result->origin = origin;
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257 return true;
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258 }
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259
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260 void CommandLineFlagsEx::intxAtPut(CommandLineFlagWithType flag, intx value, FlagValueOrigin origin) {
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261 Flag* faddr = address_of_flag(flag);
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262 guarantee(faddr != NULL && faddr->is_intx(), "wrong flag type");
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263 faddr->set_intx(value);
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264 faddr->origin = origin;
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265 }
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266
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267 bool CommandLineFlags::uintxAt(char* name, size_t len, uintx* value) {
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268 Flag* result = Flag::find_flag(name, len);
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269 if (result == NULL) return false;
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270 if (!result->is_uintx()) return false;
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271 *value = result->get_uintx();
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272 return true;
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273 }
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274
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275 bool CommandLineFlags::uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin) {
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276 Flag* result = Flag::find_flag(name, len);
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277 if (result == NULL) return false;
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278 if (!result->is_uintx()) return false;
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279 uintx old_value = result->get_uintx();
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280 result->set_uintx(*value);
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281 *value = old_value;
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282 result->origin = origin;
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283 return true;
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284 }
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285
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286 void CommandLineFlagsEx::uintxAtPut(CommandLineFlagWithType flag, uintx value, FlagValueOrigin origin) {
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287 Flag* faddr = address_of_flag(flag);
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288 guarantee(faddr != NULL && faddr->is_uintx(), "wrong flag type");
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289 faddr->set_uintx(value);
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290 faddr->origin = origin;
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291 }
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292
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293 bool CommandLineFlags::doubleAt(char* name, size_t len, double* value) {
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294 Flag* result = Flag::find_flag(name, len);
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295 if (result == NULL) return false;
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296 if (!result->is_double()) return false;
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297 *value = result->get_double();
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298 return true;
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299 }
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300
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301 bool CommandLineFlags::doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin) {
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302 Flag* result = Flag::find_flag(name, len);
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303 if (result == NULL) return false;
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304 if (!result->is_double()) return false;
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305 double old_value = result->get_double();
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306 result->set_double(*value);
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307 *value = old_value;
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308 result->origin = origin;
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309 return true;
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310 }
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311
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312 void CommandLineFlagsEx::doubleAtPut(CommandLineFlagWithType flag, double value, FlagValueOrigin origin) {
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313 Flag* faddr = address_of_flag(flag);
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314 guarantee(faddr != NULL && faddr->is_double(), "wrong flag type");
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315 faddr->set_double(value);
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316 faddr->origin = origin;
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317 }
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318
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319 bool CommandLineFlags::ccstrAt(char* name, size_t len, ccstr* value) {
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320 Flag* result = Flag::find_flag(name, len);
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321 if (result == NULL) return false;
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322 if (!result->is_ccstr()) return false;
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323 *value = result->get_ccstr();
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324 return true;
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325 }
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326
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327 // Contract: Flag will make private copy of the incoming value.
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328 // Outgoing value is always malloc-ed, and caller MUST call free.
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329 bool CommandLineFlags::ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin) {
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330 Flag* result = Flag::find_flag(name, len);
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331 if (result == NULL) return false;
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332 if (!result->is_ccstr()) return false;
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333 ccstr old_value = result->get_ccstr();
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334 char* new_value = NEW_C_HEAP_ARRAY(char, strlen(*value)+1);
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335 strcpy(new_value, *value);
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336 result->set_ccstr(new_value);
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337 if (result->origin == DEFAULT && old_value != NULL) {
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338 // Prior value is NOT heap allocated, but was a literal constant.
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339 char* old_value_to_free = NEW_C_HEAP_ARRAY(char, strlen(old_value)+1);
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340 strcpy(old_value_to_free, old_value);
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341 old_value = old_value_to_free;
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342 }
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343 *value = old_value;
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344 result->origin = origin;
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345 return true;
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346 }
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347
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348 // Contract: Flag will make private copy of the incoming value.
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349 void CommandLineFlagsEx::ccstrAtPut(CommandLineFlagWithType flag, ccstr value, FlagValueOrigin origin) {
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350 Flag* faddr = address_of_flag(flag);
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351 guarantee(faddr != NULL && faddr->is_ccstr(), "wrong flag type");
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352 ccstr old_value = faddr->get_ccstr();
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353 char* new_value = NEW_C_HEAP_ARRAY(char, strlen(value)+1);
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354 strcpy(new_value, value);
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355 faddr->set_ccstr(new_value);
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356 if (faddr->origin != DEFAULT && old_value != NULL) {
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357 // Prior value is heap allocated so free it.
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358 FREE_C_HEAP_ARRAY(char, old_value);
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359 }
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360 faddr->origin = origin;
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361 }
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362
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363 extern "C" {
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364 static int compare_flags(const void* void_a, const void* void_b) {
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365 return strcmp((*((Flag**) void_a))->name, (*((Flag**) void_b))->name);
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366 }
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367 }
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368
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369 void CommandLineFlags::printSetFlags() {
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370 // Print which flags were set on the command line
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371 // note: this method is called before the thread structure is in place
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372 // which means resource allocation cannot be used.
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373
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374 // Compute size
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375 int length= 0;
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376 while (flagTable[length].name != NULL) length++;
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377
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378 // Sort
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379 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length);
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380 for (int index = 0; index < length; index++) {
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381 array[index] = &flagTable[index];
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382 }
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383 qsort(array, length, sizeof(Flag*), compare_flags);
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384
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385 // Print
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386 for (int i = 0; i < length; i++) {
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387 if (array[i]->origin /* naked field! */) {
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388 array[i]->print_as_flag(tty);
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389 tty->print(" ");
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390 }
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391 }
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392 tty->cr();
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393 FREE_C_HEAP_ARRAY(Flag*, array);
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394 }
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395
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396 #ifndef PRODUCT
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397
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398
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399 void CommandLineFlags::verify() {
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400 assert(Arguments::check_vm_args_consistency(), "Some flag settings conflict");
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401 }
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402
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403 void CommandLineFlags::printFlags() {
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404 // Print the flags sorted by name
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405 // note: this method is called before the thread structure is in place
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406 // which means resource allocation cannot be used.
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407
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408 // Compute size
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409 int length= 0;
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410 while (flagTable[length].name != NULL) length++;
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411
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412 // Sort
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413 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length);
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414 for (int index = 0; index < length; index++) {
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415 array[index] = &flagTable[index];
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416 }
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417 qsort(array, length, sizeof(Flag*), compare_flags);
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418
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419 // Print
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420 tty->print_cr("[Global flags]");
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421 for (int i = 0; i < length; i++) {
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422 if (array[i]->is_unlocked()) {
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423 array[i]->print_on(tty);
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424 }
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425 }
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|
426 FREE_C_HEAP_ARRAY(Flag*, array);
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427 }
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428
|
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429 #endif
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