Mercurial > hg > graal-jvmci-8
annotate src/share/vm/jvmci/jvmciOptions.cpp @ 21562:47bebae7454f
Merge.
author | Doug Simon <doug.simon@oracle.com> |
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date | Thu, 28 May 2015 21:58:33 +0200 |
parents | src/share/vm/graal/graalOptions.cpp@cecb4e39521c |
children | b72a5d25ad43 |
rev | line source |
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21519
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1 /* |
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2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 |
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24 #include "precompiled.hpp" |
21562 | 25 #include "jvmci/jvmciOptions.hpp" |
26 #include "jvmci/jvmciRuntime.hpp" | |
21519
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27 #include "runtime/arguments.hpp" |
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28 #include "utilities/hashtable.inline.hpp" |
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29 |
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30 class OptionsParseClosure : public ParseClosure { |
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31 OptionsTable* _table; |
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32 public: |
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33 OptionsParseClosure(OptionsTable* table) : _table(table) {} |
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34 void do_line(char* line) { |
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35 char* idx = strchr(line, '\t'); |
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36 if (idx == NULL) { |
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37 warn_and_abort("invalid format: could not find first tab"); |
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38 return; |
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39 } |
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40 *idx = '\0'; |
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41 char* name = line; |
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42 line = idx + 1; |
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43 idx = strchr(line, '\t'); |
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44 if (idx == NULL) { |
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45 warn_and_abort("invalid format: could not find second tab"); |
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46 return; |
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47 } |
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48 *idx = '\0'; |
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49 if (strlen(line) != 1) { |
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50 warn_and_abort("invalid format: type should be 1 char long"); |
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51 return; |
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52 } |
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53 char typeChar = *line; |
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54 line = idx + 1; |
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55 idx = strchr(line, '\t'); |
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56 if (idx == NULL) { |
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57 warn_and_abort("invalid format: could not find third tab"); |
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58 return; |
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59 } |
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60 *idx = '\0'; |
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61 char* help = line; |
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62 line = idx + 1; |
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63 idx = strchr(line, '\t'); |
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64 if (idx == NULL) { |
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65 warn_and_abort("invalid format: could not find fourth tab"); |
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66 return; |
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67 } |
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68 *idx = '\0'; |
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69 char* declaringClass = line; |
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70 line = idx + 1; |
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71 char* fieldClass = line; |
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72 OptionType type; |
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73 switch(typeChar) { |
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74 case 's': |
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75 type = _string; |
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76 break; |
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77 case 'i': |
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78 type = _int; |
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79 break; |
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80 case 'j': |
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81 type = _long; |
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82 break; |
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83 case 'f': |
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84 type = _float; |
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85 break; |
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86 case 'd': |
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87 type = _double; |
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88 break; |
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89 case 'z': |
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90 type = _boolean; |
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91 break; |
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92 default: |
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93 warn_and_abort("unkown type"); |
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94 return; |
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95 } |
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96 char* name2 = NEW_C_HEAP_ARRAY(char, (strlen(name) + 1 + strlen(help) + 1 + strlen(declaringClass) + 1 + strlen(fieldClass) + 1), mtCompiler); |
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97 char* help2 = name2 + strlen(name) + 1; |
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98 char* declaringClass2 = help2 + strlen(help) + 1; |
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99 char* fieldClass2 = declaringClass2 + strlen(declaringClass) + 1; |
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100 strcpy(name2, name); |
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101 strcpy(help2, help); |
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102 strcpy(declaringClass2, declaringClass); |
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103 strcpy(fieldClass2, fieldClass); |
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104 OptionDesc desc = {name2, help2, type, declaringClass2, fieldClass2}; |
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105 if (!_table->add(desc)) { |
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106 warn_and_abort("duplicate option"); |
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107 return; |
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108 } |
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109 } |
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110 }; |
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111 |
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112 class FreeNamesClosure : public ValueClosure<OptionDesc> { |
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113 void do_value(OptionDesc* desc) { |
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114 FREE_C_HEAP_ARRAY(char, desc->name, mtCompiler); |
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115 } |
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116 }; |
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117 |
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118 OptionsTable::~OptionsTable() { |
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119 FreeNamesClosure closure; |
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120 for_each(&closure); |
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121 } |
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122 |
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123 OptionsTable* OptionsTable::load_options() { |
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124 OptionsTable* table = new OptionsTable(); |
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125 // Add PrintFlags option manually |
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126 OptionDesc printFlagsDesc; |
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127 printFlagsDesc.name = PRINT_FLAGS_ARG; |
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128 printFlagsDesc.type = _boolean; |
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129 printFlagsDesc.help = PRINT_FLAGS_HELP; |
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130 printFlagsDesc.declaringClass = NULL; |
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131 printFlagsDesc.fieldClass = NULL; |
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132 table->add(printFlagsDesc); |
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133 |
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134 char optionsDir[JVM_MAXPATHLEN]; |
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135 const char* fileSep = os::file_separator(); |
21562 | 136 jio_snprintf(optionsDir, sizeof(optionsDir), "%s%slib%sjvmci%soptions", |
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137 Arguments::get_java_home(), fileSep, fileSep, fileSep); |
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138 DIR* dir = os::opendir(optionsDir); |
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139 if (dir != NULL) { |
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140 struct dirent *entry; |
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141 char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(optionsDir), mtInternal); |
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142 OptionsParseClosure closure(table); |
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143 while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL && !closure.is_aborted()) { |
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144 const char* name = entry->d_name; |
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145 char optionFilePath[JVM_MAXPATHLEN]; |
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146 jio_snprintf(optionFilePath, sizeof(optionFilePath), "%s%s%s",optionsDir, fileSep, name); |
21562 | 147 JVMCIRuntime::parse_lines(optionFilePath, &closure, false); |
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148 } |
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149 FREE_C_HEAP_ARRAY(char, dbuf, mtInternal); |
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150 os::closedir(dir); |
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151 if (closure.is_aborted()) { |
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152 delete table; |
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153 return NULL; |
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154 } |
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155 return table; |
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156 } |
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157 // TODO(gd) should this be silent? |
21562 | 158 warning("Could not open jvmci options directory (%s)",optionsDir); |
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159 return table; |
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160 } |
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161 |
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162 OptionDesc* OptionsTable::get(const char* name, size_t arglen) { |
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163 char nameOnly[256]; |
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164 guarantee(arglen < 256, "Max supported option name len is 256"); |
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165 strncpy(nameOnly, name, arglen); |
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166 nameOnly[arglen] = '\0'; |
21562 | 167 return JVMCIHashtable<const char*, OptionDesc>::get(nameOnly); |
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168 } |
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169 |
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170 // Compute string similarity based on Dice's coefficient |
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171 static float str_similar(const char* str1, const char* str2) { |
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172 size_t len1 = strlen(str1); |
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173 size_t len2 = strlen(str2); |
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174 |
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175 if (len1 == 0 || len2 == 0) { |
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176 return 0; |
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177 } |
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178 |
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179 int hits = 0; |
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180 for (size_t i = 0; i < len1 - 1; ++i) { |
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181 for (size_t j = 0; j < len2 -1; ++j) { |
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182 if ((str1[i] == str2[j]) && (str1[i+1] == str2[j+1])) { |
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183 ++hits; |
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184 break; |
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185 } |
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186 } |
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187 } |
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188 |
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189 size_t total = len1 + len2; |
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190 return 2.0f * (float) hits / (float) total; |
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191 } |
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192 |
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193 float VMOptionsFuzzyMatchSimilarity = 0.7f; |
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194 |
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195 class FuzzyMatchClosure : public ValueClosure<OptionDesc> { |
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196 OptionDesc* _match; |
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197 float _max_score; |
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198 const char* _name; |
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199 public: |
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200 FuzzyMatchClosure(const char* name) : _name(name), _match(NULL), _max_score(-1) {} |
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201 void do_value(OptionDesc* value) { |
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202 float score = str_similar(value->name, _name); |
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203 if (score > VMOptionsFuzzyMatchSimilarity && score > _max_score) { |
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204 _max_score = score; |
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205 _match = value; |
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206 } |
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207 } |
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208 OptionDesc* get_match() { |
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209 return _match; |
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210 } |
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211 }; |
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212 |
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213 OptionDesc * OptionsTable::fuzzy_match(const char* name, size_t length) { |
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214 FuzzyMatchClosure closure(name); |
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215 for_each(&closure); |
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216 return closure.get_match(); |
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217 } |
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218 |
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219 class FreeStringsClosure : public ValueClosure<OptionValue> { |
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220 void do_value(OptionValue* value) { |
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221 if (value->desc.type == _string) { |
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222 FREE_C_HEAP_ARRAY(char, value->string_value, mtCompiler); |
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223 } |
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224 } |
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225 }; |
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226 |
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227 OptionsValueTable::~OptionsValueTable() { |
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228 FreeStringsClosure closure; |
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229 for_each(&closure); |
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230 delete _table; |
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231 } |
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232 |
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233 |
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234 |
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235 OptionValue* OptionsValueTable::get(const char* name, size_t arglen) { |
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236 char nameOnly[256]; |
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237 guarantee(arglen < 256, "Max supported option name len is 256"); |
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238 strncpy(nameOnly, name, arglen); |
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239 nameOnly[arglen] = '\0'; |
21562 | 240 return JVMCIHashtable<const char*, OptionValue>::get(nameOnly); |
21519
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241 } |