Mercurial > hg > truffle
annotate src/share/vm/runtime/globals.cpp @ 14714:b602356a9cfc
additional canonicalizers for accesses and value nodes (improves number of implicit null checks)
author | Lukas Stadler <lukas.stadler@oracle.com> |
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date | Thu, 20 Mar 2014 17:15:36 +0100 |
parents | d8041d695d19 |
children | 4ca6dc0799b6 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
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. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "memory/allocation.inline.hpp" | |
27 #include "oops/oop.inline.hpp" | |
28 #include "runtime/arguments.hpp" | |
29 #include "runtime/globals.hpp" | |
30 #include "runtime/globals_extension.hpp" | |
31 #include "utilities/ostream.hpp" | |
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32 #include "utilities/macros.hpp" |
1972 | 33 #include "utilities/top.hpp" |
14285 | 34 #include "trace/tracing.hpp" |
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35 #if INCLUDE_ALL_GCS |
1972 | 36 #include "gc_implementation/g1/g1_globals.hpp" |
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37 #endif // INCLUDE_ALL_GCS |
1972 | 38 #ifdef COMPILER1 |
39 #include "c1/c1_globals.hpp" | |
40 #endif | |
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41 #ifdef GRAAL |
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42 #include "graal/graalGlobals.hpp" |
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43 #endif |
1972 | 44 #ifdef COMPILER2 |
45 #include "opto/c2_globals.hpp" | |
46 #endif | |
47 #ifdef SHARK | |
48 #include "shark/shark_globals.hpp" | |
49 #endif | |
0 | 50 |
51 RUNTIME_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PD_DEVELOPER_FLAG, \ | |
52 MATERIALIZE_PRODUCT_FLAG, MATERIALIZE_PD_PRODUCT_FLAG, \ | |
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53 MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_EXPERIMENTAL_FLAG, \ |
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54 MATERIALIZE_NOTPRODUCT_FLAG, \ |
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55 MATERIALIZE_MANAGEABLE_FLAG, MATERIALIZE_PRODUCT_RW_FLAG, \ |
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56 MATERIALIZE_LP64_PRODUCT_FLAG) |
0 | 57 |
58 RUNTIME_OS_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PD_DEVELOPER_FLAG, \ | |
59 MATERIALIZE_PRODUCT_FLAG, MATERIALIZE_PD_PRODUCT_FLAG, \ | |
60 MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_NOTPRODUCT_FLAG) | |
61 | |
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62 ARCH_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PRODUCT_FLAG, \ |
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63 MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_EXPERIMENTAL_FLAG, \ |
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64 MATERIALIZE_NOTPRODUCT_FLAG) |
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65 |
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66 MATERIALIZE_FLAGS_EXT |
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67 |
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68 |
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69 static bool is_product_build() { |
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70 #ifdef PRODUCT |
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71 return true; |
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72 #else |
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73 return false; |
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74 #endif |
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75 } |
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76 |
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77 void Flag::check_writable() { |
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78 if (is_constant_in_binary()) { |
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79 fatal(err_msg("flag is constant: %s", _name)); |
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80 } |
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81 } |
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82 |
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83 bool Flag::is_bool() const { |
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84 return strcmp(_type, "bool") == 0; |
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85 } |
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86 |
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87 bool Flag::get_bool() const { |
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88 return *((bool*) _addr); |
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89 } |
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90 |
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91 void Flag::set_bool(bool value) { |
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92 check_writable(); |
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93 *((bool*) _addr) = value; |
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94 } |
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95 |
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96 bool Flag::is_intx() const { |
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97 return strcmp(_type, "intx") == 0; |
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98 } |
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99 |
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100 intx Flag::get_intx() const { |
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101 return *((intx*) _addr); |
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102 } |
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103 |
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104 void Flag::set_intx(intx value) { |
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105 check_writable(); |
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106 *((intx*) _addr) = value; |
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107 } |
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108 |
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109 bool Flag::is_uintx() const { |
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110 return strcmp(_type, "uintx") == 0; |
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111 } |
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112 |
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113 uintx Flag::get_uintx() const { |
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114 return *((uintx*) _addr); |
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115 } |
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116 |
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117 void Flag::set_uintx(uintx value) { |
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118 check_writable(); |
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119 *((uintx*) _addr) = value; |
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120 } |
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121 |
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122 bool Flag::is_uint64_t() const { |
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123 return strcmp(_type, "uint64_t") == 0; |
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124 } |
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125 |
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126 uint64_t Flag::get_uint64_t() const { |
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127 return *((uint64_t*) _addr); |
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128 } |
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129 |
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130 void Flag::set_uint64_t(uint64_t value) { |
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131 check_writable(); |
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132 *((uint64_t*) _addr) = value; |
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133 } |
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134 |
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135 bool Flag::is_double() const { |
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136 return strcmp(_type, "double") == 0; |
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137 } |
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138 |
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139 double Flag::get_double() const { |
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140 return *((double*) _addr); |
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141 } |
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142 |
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143 void Flag::set_double(double value) { |
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144 check_writable(); |
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145 *((double*) _addr) = value; |
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146 } |
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147 |
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148 bool Flag::is_ccstr() const { |
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149 return strcmp(_type, "ccstr") == 0 || strcmp(_type, "ccstrlist") == 0; |
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150 } |
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151 |
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152 bool Flag::ccstr_accumulates() const { |
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153 return strcmp(_type, "ccstrlist") == 0; |
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154 } |
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155 |
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156 ccstr Flag::get_ccstr() const { |
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157 return *((ccstr*) _addr); |
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158 } |
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159 |
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160 void Flag::set_ccstr(ccstr value) { |
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161 check_writable(); |
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162 *((ccstr*) _addr) = value; |
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163 } |
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164 |
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165 |
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166 Flag::Flags Flag::get_origin() { |
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167 return Flags(_flags & VALUE_ORIGIN_MASK); |
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168 } |
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169 |
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170 void Flag::set_origin(Flags origin) { |
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171 assert((origin & VALUE_ORIGIN_MASK) == origin, "sanity"); |
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172 _flags = Flags((_flags & ~VALUE_ORIGIN_MASK) | origin); |
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173 } |
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174 |
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175 bool Flag::is_default() { |
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176 return (get_origin() == DEFAULT); |
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177 } |
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178 |
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179 bool Flag::is_ergonomic() { |
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180 return (get_origin() == ERGONOMIC); |
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181 } |
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182 |
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183 bool Flag::is_command_line() { |
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184 return (get_origin() == COMMAND_LINE); |
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185 } |
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186 |
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187 bool Flag::is_product() const { |
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188 return (_flags & KIND_PRODUCT) != 0; |
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189 } |
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190 |
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191 bool Flag::is_manageable() const { |
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192 return (_flags & KIND_MANAGEABLE) != 0; |
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193 } |
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194 |
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195 bool Flag::is_diagnostic() const { |
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196 return (_flags & KIND_DIAGNOSTIC) != 0; |
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197 } |
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198 |
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199 bool Flag::is_experimental() const { |
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200 return (_flags & KIND_EXPERIMENTAL) != 0; |
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201 } |
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202 |
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203 bool Flag::is_notproduct() const { |
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204 return (_flags & KIND_NOT_PRODUCT) != 0; |
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205 } |
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206 |
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207 bool Flag::is_develop() const { |
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208 return (_flags & KIND_DEVELOP) != 0; |
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209 } |
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210 |
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211 bool Flag::is_read_write() const { |
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212 return (_flags & KIND_READ_WRITE) != 0; |
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213 } |
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214 |
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215 bool Flag::is_commercial() const { |
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216 return (_flags & KIND_COMMERCIAL) != 0; |
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217 } |
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218 |
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219 /** |
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220 * Returns if this flag is a constant in the binary. Right now this is |
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221 * true for notproduct and develop flags in product builds. |
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222 */ |
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223 bool Flag::is_constant_in_binary() const { |
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224 #ifdef PRODUCT |
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225 return is_notproduct() || is_develop(); |
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226 #else |
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227 return false; |
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228 #endif |
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229 } |
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230 |
0 | 231 bool Flag::is_unlocker() const { |
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232 return strcmp(_name, "UnlockDiagnosticVMOptions") == 0 || |
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233 strcmp(_name, "UnlockExperimentalVMOptions") == 0 || |
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234 is_unlocker_ext(); |
0 | 235 } |
236 | |
237 bool Flag::is_unlocked() const { | |
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238 if (is_diagnostic()) { |
0 | 239 return UnlockDiagnosticVMOptions; |
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240 } |
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241 if (is_experimental()) { |
350
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242 return UnlockExperimentalVMOptions; |
0 | 243 } |
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244 return is_unlocked_ext(); |
0 | 245 } |
246 | |
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247 // Get custom message for this locked flag, or return NULL if |
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248 // none is available. |
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249 void Flag::get_locked_message(char* buf, int buflen) const { |
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250 buf[0] = '\0'; |
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251 if (is_diagnostic() && !is_unlocked()) { |
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252 jio_snprintf(buf, buflen, "Error: VM option '%s' is diagnostic and must be enabled via -XX:+UnlockDiagnosticVMOptions.\n", |
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253 _name); |
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254 return; |
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255 } |
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256 if (is_experimental() && !is_unlocked()) { |
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257 jio_snprintf(buf, buflen, "Error: VM option '%s' is experimental and must be enabled via -XX:+UnlockExperimentalVMOptions.\n", |
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258 _name); |
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259 return; |
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260 } |
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261 if (is_develop() && is_product_build()) { |
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262 jio_snprintf(buf, buflen, "Error: VM option '%s' is develop and is available only in debug version of VM.\n", |
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263 _name); |
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264 return; |
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265 } |
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266 if (is_notproduct() && is_product_build()) { |
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267 jio_snprintf(buf, buflen, "Error: VM option '%s' is notproduct and is available only in debug version of VM.\n", |
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268 _name); |
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269 return; |
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270 } |
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271 get_locked_message_ext(buf, buflen); |
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272 } |
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273 |
0 | 274 bool Flag::is_writeable() const { |
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275 return is_manageable() || (is_product() && is_read_write()) || is_writeable_ext(); |
0 | 276 } |
277 | |
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278 // All flags except "manageable" are assumed to be internal flags. |
0 | 279 // Long term, we need to define a mechanism to specify which flags |
280 // are external/stable and change this function accordingly. | |
281 bool Flag::is_external() const { | |
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282 return is_manageable() || is_external_ext(); |
0 | 283 } |
284 | |
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285 |
0 | 286 // Length of format string (e.g. "%.1234s") for printing ccstr below |
287 #define FORMAT_BUFFER_LEN 16 | |
288 | |
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289 void Flag::print_on(outputStream* st, bool withComments) { |
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290 // Don't print notproduct and develop flags in a product build. |
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291 if (is_constant_in_binary()) { |
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292 return; |
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293 } |
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294 |
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295 st->print("%9s %-40s %c= ", _type, _name, (!is_default() ? ':' : ' ')); |
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296 |
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297 if (is_bool()) { |
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298 st->print("%-16s", get_bool() ? "true" : "false"); |
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299 } |
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300 if (is_intx()) { |
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301 st->print("%-16ld", get_intx()); |
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302 } |
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303 if (is_uintx()) { |
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304 st->print("%-16lu", get_uintx()); |
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305 } |
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306 if (is_uint64_t()) { |
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307 st->print("%-16lu", get_uint64_t()); |
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308 } |
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309 if (is_double()) { |
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310 st->print("%-16f", get_double()); |
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311 } |
0 | 312 if (is_ccstr()) { |
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313 const char* cp = get_ccstr(); |
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314 if (cp != NULL) { |
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315 const char* eol; |
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316 while ((eol = strchr(cp, '\n')) != NULL) { |
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317 char format_buffer[FORMAT_BUFFER_LEN]; |
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318 size_t llen = pointer_delta(eol, cp, sizeof(char)); |
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319 jio_snprintf(format_buffer, FORMAT_BUFFER_LEN, |
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320 "%%." SIZE_FORMAT "s", llen); |
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321 st->print(format_buffer, cp); |
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322 st->cr(); |
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323 cp = eol+1; |
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324 st->print("%5s %-35s += ", "", _name); |
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325 } |
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326 st->print("%-16s", cp); |
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327 } |
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328 else st->print("%-16s", ""); |
0 | 329 } |
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330 |
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331 st->print("%-20s", " "); |
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332 print_kind(st); |
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333 |
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334 if (withComments) { |
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335 #ifndef PRODUCT |
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336 st->print("%s", _doc); |
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337 #endif |
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338 } |
0 | 339 st->cr(); |
340 } | |
341 | |
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342 void Flag::print_kind(outputStream* st) { |
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343 struct Data { |
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344 int flag; |
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345 const char* name; |
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346 }; |
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347 |
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348 Data data[] = { |
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349 { KIND_C1, "C1" }, |
12355 | 350 { KIND_GRAAL, "Graal" }, |
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351 { KIND_C2, "C2" }, |
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352 { KIND_ARCH, "ARCH" }, |
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353 { KIND_SHARK, "SHARK" }, |
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354 { KIND_PLATFORM_DEPENDENT, "pd" }, |
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355 { KIND_PRODUCT, "product" }, |
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356 { KIND_MANAGEABLE, "manageable" }, |
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357 { KIND_DIAGNOSTIC, "diagnostic" }, |
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358 { KIND_EXPERIMENTAL, "experimental" }, |
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359 { KIND_COMMERCIAL, "commercial" }, |
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360 { KIND_NOT_PRODUCT, "notproduct" }, |
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361 { KIND_DEVELOP, "develop" }, |
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362 { KIND_LP64_PRODUCT, "lp64_product" }, |
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363 { KIND_READ_WRITE, "rw" }, |
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364 { -1, "" } |
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365 }; |
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366 |
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367 if ((_flags & KIND_MASK) != 0) { |
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368 st->print("{"); |
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369 bool is_first = true; |
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370 |
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371 for (int i = 0; data[i].flag != -1; i++) { |
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372 Data d = data[i]; |
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373 if ((_flags & d.flag) != 0) { |
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374 if (is_first) { |
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375 is_first = false; |
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376 } else { |
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377 st->print(" "); |
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378 } |
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379 st->print(d.name); |
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380 } |
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381 } |
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382 |
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383 st->print("}"); |
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384 } |
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385 } |
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386 |
0 | 387 void Flag::print_as_flag(outputStream* st) { |
388 if (is_bool()) { | |
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389 st->print("-XX:%s%s", get_bool() ? "+" : "-", _name); |
0 | 390 } else if (is_intx()) { |
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391 st->print("-XX:%s=" INTX_FORMAT, _name, get_intx()); |
0 | 392 } else if (is_uintx()) { |
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393 st->print("-XX:%s=" UINTX_FORMAT, _name, get_uintx()); |
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394 } else if (is_uint64_t()) { |
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395 st->print("-XX:%s=" UINT64_FORMAT, _name, get_uint64_t()); |
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396 } else if (is_double()) { |
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397 st->print("-XX:%s=%f", _name, get_double()); |
0 | 398 } else if (is_ccstr()) { |
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399 st->print("-XX:%s=", _name); |
103 | 400 const char* cp = get_ccstr(); |
401 if (cp != NULL) { | |
402 // Need to turn embedded '\n's back into separate arguments | |
403 // Not so efficient to print one character at a time, | |
404 // but the choice is to do the transformation to a buffer | |
405 // and print that. And this need not be efficient. | |
406 for (; *cp != '\0'; cp += 1) { | |
407 switch (*cp) { | |
408 default: | |
409 st->print("%c", *cp); | |
410 break; | |
411 case '\n': | |
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412 st->print(" -XX:%s=", _name); |
103 | 413 break; |
414 } | |
0 | 415 } |
416 } | |
417 } else { | |
418 ShouldNotReachHere(); | |
419 } | |
420 } | |
421 | |
422 // 4991491 do not "optimize out" the was_set false values: omitting them | |
423 // tickles a Microsoft compiler bug causing flagTable to be malformed | |
424 | |
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425 #define NAME(name) NOT_PRODUCT(&name) PRODUCT_ONLY(&CONST_##name) |
0 | 426 |
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427 #define RUNTIME_PRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_PRODUCT) }, |
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428 #define RUNTIME_PD_PRODUCT_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_PRODUCT | Flag::KIND_PLATFORM_DEPENDENT) }, |
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429 #define RUNTIME_DIAGNOSTIC_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_DIAGNOSTIC) }, |
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430 #define RUNTIME_EXPERIMENTAL_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_EXPERIMENTAL) }, |
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431 #define RUNTIME_MANAGEABLE_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_MANAGEABLE) }, |
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432 #define RUNTIME_PRODUCT_RW_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_PRODUCT | Flag::KIND_READ_WRITE) }, |
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433 #define RUNTIME_DEVELOP_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_DEVELOP) }, |
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434 #define RUNTIME_PD_DEVELOP_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_DEVELOP | Flag::KIND_PLATFORM_DEPENDENT) }, |
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435 #define RUNTIME_NOTPRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_NOT_PRODUCT) }, |
0 | 436 |
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437 #ifdef _LP64 |
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438 #define RUNTIME_LP64_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_LP64_PRODUCT) }, |
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439 #else |
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440 #define RUNTIME_LP64_PRODUCT_FLAG_STRUCT(type, name, value, doc) /* flag is constant */ |
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441 #endif // _LP64 |
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442 |
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443 #define C1_PRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C1 | Flag::KIND_PRODUCT) }, |
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444 #define C1_PD_PRODUCT_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C1 | Flag::KIND_PRODUCT | Flag::KIND_PLATFORM_DEPENDENT) }, |
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445 #define C1_DIAGNOSTIC_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C1 | Flag::KIND_DIAGNOSTIC) }, |
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446 #define C1_DEVELOP_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C1 | Flag::KIND_DEVELOP) }, |
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447 #define C1_PD_DEVELOP_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C1 | Flag::KIND_DEVELOP | Flag::KIND_PLATFORM_DEPENDENT) }, |
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448 #define C1_NOTPRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C1 | Flag::KIND_NOT_PRODUCT) }, |
0 | 449 |
12355 | 450 #define GRAAL_PRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_GRAAL | Flag::KIND_PRODUCT) }, |
451 #define GRAAL_PD_PRODUCT_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_GRAAL | Flag::KIND_PRODUCT | Flag::KIND_PLATFORM_DEPENDENT) }, | |
452 #define GRAAL_DEVELOP_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_GRAAL | Flag::KIND_DEVELOP) }, | |
453 #define GRAAL_PD_DEVELOP_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_GRAAL | Flag::KIND_DEVELOP | Flag::KIND_PLATFORM_DEPENDENT) }, | |
454 #define GRAAL_NOTPRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_GRAAL | Flag::KIND_NOT_PRODUCT) }, | |
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455 |
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456 #define C2_PRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C2 | Flag::KIND_PRODUCT) }, |
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457 #define C2_PD_PRODUCT_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C2 | Flag::KIND_PRODUCT | Flag::KIND_PLATFORM_DEPENDENT) }, |
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458 #define C2_DIAGNOSTIC_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C2 | Flag::KIND_DIAGNOSTIC) }, |
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459 #define C2_EXPERIMENTAL_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C2 | Flag::KIND_EXPERIMENTAL) }, |
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460 #define C2_DEVELOP_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C2 | Flag::KIND_DEVELOP) }, |
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461 #define C2_PD_DEVELOP_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C2 | Flag::KIND_DEVELOP | Flag::KIND_PLATFORM_DEPENDENT) }, |
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462 #define C2_NOTPRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C2 | Flag::KIND_NOT_PRODUCT) }, |
0 | 463 |
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464 #define ARCH_PRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_ARCH | Flag::KIND_PRODUCT) }, |
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465 #define ARCH_DIAGNOSTIC_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_ARCH | Flag::KIND_DIAGNOSTIC) }, |
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466 #define ARCH_EXPERIMENTAL_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_ARCH | Flag::KIND_EXPERIMENTAL) }, |
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467 #define ARCH_DEVELOP_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_ARCH | Flag::KIND_DEVELOP) }, |
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468 #define ARCH_NOTPRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_ARCH | Flag::KIND_NOT_PRODUCT) }, |
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469 |
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470 #define SHARK_PRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_SHARK | Flag::KIND_PRODUCT) }, |
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471 #define SHARK_PD_PRODUCT_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_SHARK | Flag::KIND_PRODUCT | Flag::KIND_PLATFORM_DEPENDENT) }, |
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472 #define SHARK_DIAGNOSTIC_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_SHARK | Flag::KIND_DIAGNOSTIC) }, |
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473 #define SHARK_DEVELOP_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_SHARK | Flag::KIND_DEVELOP) }, |
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474 #define SHARK_PD_DEVELOP_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_SHARK | Flag::KIND_DEVELOP | Flag::KIND_PLATFORM_DEPENDENT) }, |
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475 #define SHARK_NOTPRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), NAME(name), NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_SHARK | Flag::KIND_NOT_PRODUCT) }, |
0 | 476 |
477 static Flag flagTable[] = { | |
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478 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_EXPERIMENTAL_FLAG_STRUCT, RUNTIME_NOTPRODUCT_FLAG_STRUCT, RUNTIME_MANAGEABLE_FLAG_STRUCT, RUNTIME_PRODUCT_RW_FLAG_STRUCT, RUNTIME_LP64_PRODUCT_FLAG_STRUCT) |
0 | 479 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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480 #if INCLUDE_ALL_GCS |
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481 G1_FLAGS(RUNTIME_DEVELOP_FLAG_STRUCT, RUNTIME_PD_DEVELOP_FLAG_STRUCT, RUNTIME_PRODUCT_FLAG_STRUCT, RUNTIME_PD_PRODUCT_FLAG_STRUCT, RUNTIME_DIAGNOSTIC_FLAG_STRUCT, RUNTIME_EXPERIMENTAL_FLAG_STRUCT, RUNTIME_NOTPRODUCT_FLAG_STRUCT, RUNTIME_MANAGEABLE_FLAG_STRUCT, RUNTIME_PRODUCT_RW_FLAG_STRUCT) |
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482 #endif // INCLUDE_ALL_GCS |
0 | 483 #ifdef COMPILER1 |
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484 C1_FLAGS(C1_DEVELOP_FLAG_STRUCT, C1_PD_DEVELOP_FLAG_STRUCT, C1_PRODUCT_FLAG_STRUCT, C1_PD_PRODUCT_FLAG_STRUCT, C1_DIAGNOSTIC_FLAG_STRUCT, C1_NOTPRODUCT_FLAG_STRUCT) |
0 | 485 #endif |
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486 #ifdef GRAAL |
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487 GRAAL_FLAGS(GRAAL_DEVELOP_FLAG_STRUCT, GRAAL_PD_DEVELOP_FLAG_STRUCT, GRAAL_PRODUCT_FLAG_STRUCT, GRAAL_PD_PRODUCT_FLAG_STRUCT, GRAAL_NOTPRODUCT_FLAG_STRUCT) |
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488 #endif |
0 | 489 #ifdef COMPILER2 |
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490 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_EXPERIMENTAL_FLAG_STRUCT, C2_NOTPRODUCT_FLAG_STRUCT) |
0 | 491 #endif |
1692 | 492 #ifdef SHARK |
493 SHARK_FLAGS(SHARK_DEVELOP_FLAG_STRUCT, SHARK_PD_DEVELOP_FLAG_STRUCT, SHARK_PRODUCT_FLAG_STRUCT, SHARK_PD_PRODUCT_FLAG_STRUCT, SHARK_DIAGNOSTIC_FLAG_STRUCT, SHARK_NOTPRODUCT_FLAG_STRUCT) | |
494 #endif | |
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495 ARCH_FLAGS(ARCH_DEVELOP_FLAG_STRUCT, ARCH_PRODUCT_FLAG_STRUCT, ARCH_DIAGNOSTIC_FLAG_STRUCT, ARCH_EXPERIMENTAL_FLAG_STRUCT, ARCH_NOTPRODUCT_FLAG_STRUCT) |
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496 FLAGTABLE_EXT |
0 | 497 {0, NULL, NULL} |
498 }; | |
499 | |
500 Flag* Flag::flags = flagTable; | |
501 size_t Flag::numFlags = (sizeof(flagTable) / sizeof(Flag)); | |
502 | |
11070 | 503 inline bool str_equal(const char* s, const char* q, size_t len) { |
0 | 504 // s is null terminated, q is not! |
505 if (strlen(s) != (unsigned int) len) return false; | |
506 return strncmp(s, q, len) == 0; | |
507 } | |
508 | |
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509 // Search the flag table for a named flag |
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510 Flag* Flag::find_flag(const char* name, size_t length, bool allow_locked, bool return_flag) { |
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511 for (Flag* current = &flagTable[0]; current->_name != NULL; current++) { |
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512 if (str_equal(current->_name, name, length)) { |
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513 // Found a matching entry. |
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514 // Don't report notproduct and develop flags in product builds. |
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515 if (current->is_constant_in_binary()) { |
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516 return (return_flag == true ? current : NULL); |
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517 } |
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518 // Report locked flags only if allowed. |
0 | 519 if (!(current->is_unlocked() || current->is_unlocker())) { |
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520 if (!allow_locked) { |
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521 // disable use of locked flags, e.g. diagnostic, experimental, |
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522 // commercial... until they are explicitly unlocked |
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523 return NULL; |
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524 } |
0 | 525 } |
526 return current; | |
527 } | |
528 } | |
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529 // Flag name is not in the flag table |
0 | 530 return NULL; |
531 } | |
532 | |
11070 | 533 // Compute string similarity based on Dice's coefficient |
534 static float str_similar(const char* str1, const char* str2, size_t len2) { | |
535 int len1 = (int) strlen(str1); | |
536 int total = len1 + (int) len2; | |
537 | |
538 int hit = 0; | |
539 | |
540 for (int i = 0; i < len1 -1; ++i) { | |
541 for (int j = 0; j < (int) len2 -1; ++j) { | |
542 if ((str1[i] == str2[j]) && (str1[i+1] == str2[j+1])) { | |
543 ++hit; | |
544 break; | |
545 } | |
546 } | |
547 } | |
548 | |
549 return 2.0f * (float) hit / (float) total; | |
550 } | |
551 | |
552 Flag* Flag::fuzzy_match(const char* name, size_t length, bool allow_locked) { | |
553 float VMOptionsFuzzyMatchSimilarity = 0.7f; | |
554 Flag* match = NULL; | |
555 float score; | |
556 float max_score = -1; | |
557 | |
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558 for (Flag* current = &flagTable[0]; current->_name != NULL; current++) { |
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559 score = str_similar(current->_name, name, length); |
11070 | 560 if (score > max_score) { |
561 max_score = score; | |
562 match = current; | |
563 } | |
564 } | |
565 | |
566 if (!(match->is_unlocked() || match->is_unlocker())) { | |
567 if (!allow_locked) { | |
568 return NULL; | |
569 } | |
570 } | |
571 | |
572 if (max_score < VMOptionsFuzzyMatchSimilarity) { | |
573 return NULL; | |
574 } | |
575 | |
576 return match; | |
577 } | |
578 | |
0 | 579 // Returns the address of the index'th element |
580 static Flag* address_of_flag(CommandLineFlagWithType flag) { | |
581 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); | |
582 return &Flag::flags[flag]; | |
583 } | |
584 | |
585 bool CommandLineFlagsEx::is_default(CommandLineFlag flag) { | |
586 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); | |
587 Flag* f = &Flag::flags[flag]; | |
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588 return f->is_default(); |
0 | 589 } |
590 | |
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591 bool CommandLineFlagsEx::is_ergo(CommandLineFlag flag) { |
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592 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); |
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593 Flag* f = &Flag::flags[flag]; |
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594 return f->is_ergonomic(); |
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595 } |
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596 |
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597 bool CommandLineFlagsEx::is_cmdline(CommandLineFlag flag) { |
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598 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); |
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599 Flag* f = &Flag::flags[flag]; |
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600 return f->is_command_line(); |
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601 } |
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602 |
0 | 603 bool CommandLineFlags::wasSetOnCmdline(const char* name, bool* value) { |
604 Flag* result = Flag::find_flag((char*)name, strlen(name)); | |
605 if (result == NULL) return false; | |
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606 *value = result->is_command_line(); |
0 | 607 return true; |
608 } | |
609 | |
14285 | 610 template<class E, class T> |
611 static void trace_flag_changed(const char* name, const T old_value, const T new_value, const Flag::Flags origin) | |
612 { | |
613 E e; | |
614 e.set_name(name); | |
615 e.set_old_value(old_value); | |
616 e.set_new_value(new_value); | |
617 e.set_origin(origin); | |
618 e.commit(); | |
619 } | |
620 | |
0 | 621 bool CommandLineFlags::boolAt(char* name, size_t len, bool* value) { |
622 Flag* result = Flag::find_flag(name, len); | |
623 if (result == NULL) return false; | |
624 if (!result->is_bool()) return false; | |
625 *value = result->get_bool(); | |
626 return true; | |
627 } | |
628 | |
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629 bool CommandLineFlags::boolAtPut(char* name, size_t len, bool* value, Flag::Flags origin) { |
0 | 630 Flag* result = Flag::find_flag(name, len); |
631 if (result == NULL) return false; | |
632 if (!result->is_bool()) return false; | |
633 bool old_value = result->get_bool(); | |
14285 | 634 trace_flag_changed<EventBooleanFlagChanged, bool>(name, old_value, *value, origin); |
0 | 635 result->set_bool(*value); |
636 *value = old_value; | |
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637 result->set_origin(origin); |
0 | 638 return true; |
639 } | |
640 | |
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641 void CommandLineFlagsEx::boolAtPut(CommandLineFlagWithType flag, bool value, Flag::Flags origin) { |
0 | 642 Flag* faddr = address_of_flag(flag); |
643 guarantee(faddr != NULL && faddr->is_bool(), "wrong flag type"); | |
14285 | 644 trace_flag_changed<EventBooleanFlagChanged, bool>(faddr->_name, faddr->get_bool(), value, origin); |
0 | 645 faddr->set_bool(value); |
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646 faddr->set_origin(origin); |
0 | 647 } |
648 | |
649 bool CommandLineFlags::intxAt(char* name, size_t len, intx* value) { | |
650 Flag* result = Flag::find_flag(name, len); | |
651 if (result == NULL) return false; | |
652 if (!result->is_intx()) return false; | |
653 *value = result->get_intx(); | |
654 return true; | |
655 } | |
656 | |
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657 bool CommandLineFlags::intxAtPut(char* name, size_t len, intx* value, Flag::Flags origin) { |
0 | 658 Flag* result = Flag::find_flag(name, len); |
659 if (result == NULL) return false; | |
660 if (!result->is_intx()) return false; | |
661 intx old_value = result->get_intx(); | |
14285 | 662 trace_flag_changed<EventLongFlagChanged, s8>(name, old_value, *value, origin); |
0 | 663 result->set_intx(*value); |
664 *value = old_value; | |
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665 result->set_origin(origin); |
0 | 666 return true; |
667 } | |
668 | |
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669 void CommandLineFlagsEx::intxAtPut(CommandLineFlagWithType flag, intx value, Flag::Flags origin) { |
0 | 670 Flag* faddr = address_of_flag(flag); |
671 guarantee(faddr != NULL && faddr->is_intx(), "wrong flag type"); | |
14285 | 672 trace_flag_changed<EventLongFlagChanged, s8>(faddr->_name, faddr->get_intx(), value, origin); |
0 | 673 faddr->set_intx(value); |
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674 faddr->set_origin(origin); |
0 | 675 } |
676 | |
677 bool CommandLineFlags::uintxAt(char* name, size_t len, uintx* value) { | |
678 Flag* result = Flag::find_flag(name, len); | |
679 if (result == NULL) return false; | |
680 if (!result->is_uintx()) return false; | |
681 *value = result->get_uintx(); | |
682 return true; | |
683 } | |
684 | |
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685 bool CommandLineFlags::uintxAtPut(char* name, size_t len, uintx* value, Flag::Flags origin) { |
0 | 686 Flag* result = Flag::find_flag(name, len); |
687 if (result == NULL) return false; | |
688 if (!result->is_uintx()) return false; | |
689 uintx old_value = result->get_uintx(); | |
14285 | 690 trace_flag_changed<EventUnsignedLongFlagChanged, u8>(name, old_value, *value, origin); |
0 | 691 result->set_uintx(*value); |
692 *value = old_value; | |
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693 result->set_origin(origin); |
0 | 694 return true; |
695 } | |
696 | |
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697 void CommandLineFlagsEx::uintxAtPut(CommandLineFlagWithType flag, uintx value, Flag::Flags origin) { |
0 | 698 Flag* faddr = address_of_flag(flag); |
699 guarantee(faddr != NULL && faddr->is_uintx(), "wrong flag type"); | |
14285 | 700 trace_flag_changed<EventUnsignedLongFlagChanged, u8>(faddr->_name, faddr->get_uintx(), value, origin); |
0 | 701 faddr->set_uintx(value); |
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702 faddr->set_origin(origin); |
0 | 703 } |
704 | |
1064 | 705 bool CommandLineFlags::uint64_tAt(char* name, size_t len, uint64_t* value) { |
706 Flag* result = Flag::find_flag(name, len); | |
707 if (result == NULL) return false; | |
708 if (!result->is_uint64_t()) return false; | |
709 *value = result->get_uint64_t(); | |
710 return true; | |
711 } | |
712 | |
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713 bool CommandLineFlags::uint64_tAtPut(char* name, size_t len, uint64_t* value, Flag::Flags origin) { |
1064 | 714 Flag* result = Flag::find_flag(name, len); |
715 if (result == NULL) return false; | |
716 if (!result->is_uint64_t()) return false; | |
717 uint64_t old_value = result->get_uint64_t(); | |
14285 | 718 trace_flag_changed<EventUnsignedLongFlagChanged, u8>(name, old_value, *value, origin); |
1064 | 719 result->set_uint64_t(*value); |
720 *value = old_value; | |
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721 result->set_origin(origin); |
1064 | 722 return true; |
723 } | |
724 | |
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725 void CommandLineFlagsEx::uint64_tAtPut(CommandLineFlagWithType flag, uint64_t value, Flag::Flags origin) { |
1064 | 726 Flag* faddr = address_of_flag(flag); |
727 guarantee(faddr != NULL && faddr->is_uint64_t(), "wrong flag type"); | |
14285 | 728 trace_flag_changed<EventUnsignedLongFlagChanged, u8>(faddr->_name, faddr->get_uint64_t(), value, origin); |
1064 | 729 faddr->set_uint64_t(value); |
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730 faddr->set_origin(origin); |
1064 | 731 } |
732 | |
0 | 733 bool CommandLineFlags::doubleAt(char* name, size_t len, double* value) { |
734 Flag* result = Flag::find_flag(name, len); | |
735 if (result == NULL) return false; | |
736 if (!result->is_double()) return false; | |
737 *value = result->get_double(); | |
738 return true; | |
739 } | |
740 | |
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741 bool CommandLineFlags::doubleAtPut(char* name, size_t len, double* value, Flag::Flags origin) { |
0 | 742 Flag* result = Flag::find_flag(name, len); |
743 if (result == NULL) return false; | |
744 if (!result->is_double()) return false; | |
745 double old_value = result->get_double(); | |
14285 | 746 trace_flag_changed<EventDoubleFlagChanged, double>(name, old_value, *value, origin); |
0 | 747 result->set_double(*value); |
748 *value = old_value; | |
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749 result->set_origin(origin); |
0 | 750 return true; |
751 } | |
752 | |
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753 void CommandLineFlagsEx::doubleAtPut(CommandLineFlagWithType flag, double value, Flag::Flags origin) { |
0 | 754 Flag* faddr = address_of_flag(flag); |
755 guarantee(faddr != NULL && faddr->is_double(), "wrong flag type"); | |
14285 | 756 trace_flag_changed<EventDoubleFlagChanged, double>(faddr->_name, faddr->get_double(), value, origin); |
0 | 757 faddr->set_double(value); |
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758 faddr->set_origin(origin); |
0 | 759 } |
760 | |
761 bool CommandLineFlags::ccstrAt(char* name, size_t len, ccstr* value) { | |
762 Flag* result = Flag::find_flag(name, len); | |
763 if (result == NULL) return false; | |
764 if (!result->is_ccstr()) return false; | |
765 *value = result->get_ccstr(); | |
766 return true; | |
767 } | |
768 | |
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769 bool CommandLineFlags::ccstrAtPut(char* name, size_t len, ccstr* value, Flag::Flags origin) { |
0 | 770 Flag* result = Flag::find_flag(name, len); |
771 if (result == NULL) return false; | |
772 if (!result->is_ccstr()) return false; | |
773 ccstr old_value = result->get_ccstr(); | |
14285 | 774 trace_flag_changed<EventStringFlagChanged, const char*>(name, old_value, *value, origin); |
370
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775 char* new_value = NULL; |
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776 if (*value != NULL) { |
6197 | 777 new_value = NEW_C_HEAP_ARRAY(char, strlen(*value)+1, mtInternal); |
370
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778 strcpy(new_value, *value); |
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779 } |
0 | 780 result->set_ccstr(new_value); |
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781 if (result->is_default() && old_value != NULL) { |
0 | 782 // Prior value is NOT heap allocated, but was a literal constant. |
6197 | 783 char* old_value_to_free = NEW_C_HEAP_ARRAY(char, strlen(old_value)+1, mtInternal); |
0 | 784 strcpy(old_value_to_free, old_value); |
785 old_value = old_value_to_free; | |
786 } | |
787 *value = old_value; | |
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788 result->set_origin(origin); |
0 | 789 return true; |
790 } | |
791 | |
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792 void CommandLineFlagsEx::ccstrAtPut(CommandLineFlagWithType flag, ccstr value, Flag::Flags origin) { |
0 | 793 Flag* faddr = address_of_flag(flag); |
794 guarantee(faddr != NULL && faddr->is_ccstr(), "wrong flag type"); | |
795 ccstr old_value = faddr->get_ccstr(); | |
14285 | 796 trace_flag_changed<EventStringFlagChanged, const char*>(faddr->_name, old_value, value, origin); |
6197 | 797 char* new_value = NEW_C_HEAP_ARRAY(char, strlen(value)+1, mtInternal); |
0 | 798 strcpy(new_value, value); |
799 faddr->set_ccstr(new_value); | |
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800 if (!faddr->is_default() && old_value != NULL) { |
0 | 801 // Prior value is heap allocated so free it. |
6197 | 802 FREE_C_HEAP_ARRAY(char, old_value, mtInternal); |
0 | 803 } |
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804 faddr->set_origin(origin); |
0 | 805 } |
806 | |
807 extern "C" { | |
808 static int compare_flags(const void* void_a, const void* void_b) { | |
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809 return strcmp((*((Flag**) void_a))->_name, (*((Flag**) void_b))->_name); |
0 | 810 } |
811 } | |
812 | |
4773 | 813 void CommandLineFlags::printSetFlags(outputStream* out) { |
0 | 814 // Print which flags were set on the command line |
815 // note: this method is called before the thread structure is in place | |
816 // which means resource allocation cannot be used. | |
817 | |
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818 // The last entry is the null entry. |
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819 const size_t length = Flag::numFlags - 1; |
0 | 820 |
821 // Sort | |
6197 | 822 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length, mtInternal); |
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823 for (size_t i = 0; i < length; i++) { |
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824 array[i] = &flagTable[i]; |
0 | 825 } |
826 qsort(array, length, sizeof(Flag*), compare_flags); | |
827 | |
828 // Print | |
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829 for (size_t i = 0; i < length; i++) { |
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830 if (array[i]->get_origin() /* naked field! */) { |
4773 | 831 array[i]->print_as_flag(out); |
832 out->print(" "); | |
0 | 833 } |
834 } | |
4773 | 835 out->cr(); |
6197 | 836 FREE_C_HEAP_ARRAY(Flag*, array, mtInternal); |
0 | 837 } |
838 | |
839 #ifndef PRODUCT | |
840 | |
841 | |
842 void CommandLineFlags::verify() { | |
843 assert(Arguments::check_vm_args_consistency(), "Some flag settings conflict"); | |
844 } | |
845 | |
1150 | 846 #endif // PRODUCT |
847 | |
4773 | 848 void CommandLineFlags::printFlags(outputStream* out, bool withComments) { |
0 | 849 // Print the flags sorted by name |
850 // note: this method is called before the thread structure is in place | |
851 // which means resource allocation cannot be used. | |
852 | |
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853 // The last entry is the null entry. |
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854 const size_t length = Flag::numFlags - 1; |
0 | 855 |
856 // Sort | |
6197 | 857 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length, mtInternal); |
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858 for (size_t i = 0; i < length; i++) { |
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859 array[i] = &flagTable[i]; |
0 | 860 } |
861 qsort(array, length, sizeof(Flag*), compare_flags); | |
862 | |
863 // Print | |
4773 | 864 out->print_cr("[Global flags]"); |
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865 for (size_t i = 0; i < length; i++) { |
0 | 866 if (array[i]->is_unlocked()) { |
4773 | 867 array[i]->print_on(out, withComments); |
0 | 868 } |
869 } | |
6197 | 870 FREE_C_HEAP_ARRAY(Flag*, array, mtInternal); |
0 | 871 } |