Mercurial > hg > truffle
annotate src/share/vm/compiler/compilerOracle.cpp @ 20804:7848fc12602b
Merge with jdk8u40-b25
| author | Gilles Duboscq <gilles.m.duboscq@oracle.com> |
|---|---|
| date | Tue, 07 Apr 2015 14:58:49 +0200 |
| parents | 5281f8e34a4a e09c0676c53f |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1998, 2014, 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 "compiler/compilerOracle.hpp" | |
| 27 #include "memory/allocation.inline.hpp" | |
| 28 #include "memory/oopFactory.hpp" | |
| 29 #include "memory/resourceArea.hpp" | |
| 30 #include "oops/klass.hpp" | |
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31 #include "oops/method.hpp" |
| 1972 | 32 #include "oops/oop.inline.hpp" |
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33 #include "oops/symbol.hpp" |
| 1972 | 34 #include "runtime/handles.inline.hpp" |
| 35 #include "runtime/jniHandles.hpp" | |
| 0 | 36 |
| 6197 | 37 class MethodMatcher : public CHeapObj<mtCompiler> { |
| 0 | 38 public: |
| 39 enum Mode { | |
| 40 Exact, | |
| 41 Prefix = 1, | |
| 42 Suffix = 2, | |
| 43 Substring = Prefix | Suffix, | |
| 44 Any, | |
| 45 Unknown = -1 | |
| 46 }; | |
| 47 | |
| 48 protected: | |
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49 Symbol* _class_name; |
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50 Symbol* _method_name; |
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51 Symbol* _signature; |
| 0 | 52 Mode _class_mode; |
| 53 Mode _method_mode; | |
| 54 MethodMatcher* _next; | |
| 55 | |
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56 static bool match(Symbol* candidate, Symbol* match, Mode match_mode); |
| 0 | 57 |
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58 Symbol* class_name() const { return _class_name; } |
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59 Symbol* method_name() const { return _method_name; } |
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60 Symbol* signature() const { return _signature; } |
| 0 | 61 |
| 62 public: | |
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63 MethodMatcher(Symbol* class_name, Mode class_mode, |
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64 Symbol* method_name, Mode method_mode, |
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65 Symbol* signature, MethodMatcher* next); |
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66 MethodMatcher(Symbol* class_name, Symbol* method_name, MethodMatcher* next); |
| 0 | 67 |
| 68 // utility method | |
| 69 MethodMatcher* find(methodHandle method) { | |
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70 Symbol* class_name = method->method_holder()->name(); |
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71 Symbol* method_name = method->name(); |
| 0 | 72 for (MethodMatcher* current = this; current != NULL; current = current->_next) { |
| 73 if (match(class_name, current->class_name(), current->_class_mode) && | |
| 74 match(method_name, current->method_name(), current->_method_mode) && | |
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75 (current->signature() == NULL || current->signature() == method->signature())) { |
| 0 | 76 return current; |
| 77 } | |
| 78 } | |
| 79 return NULL; | |
| 80 } | |
| 81 | |
| 82 bool match(methodHandle method) { | |
| 83 return find(method) != NULL; | |
| 84 } | |
| 85 | |
| 86 MethodMatcher* next() const { return _next; } | |
| 87 | |
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88 static void print_symbol(Symbol* h, Mode mode) { |
| 0 | 89 ResourceMark rm; |
| 90 | |
| 91 if (mode == Suffix || mode == Substring || mode == Any) { | |
| 92 tty->print("*"); | |
| 93 } | |
| 94 if (mode != Any) { | |
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95 h->print_symbol_on(tty); |
| 0 | 96 } |
| 97 if (mode == Prefix || mode == Substring) { | |
| 98 tty->print("*"); | |
| 99 } | |
| 100 } | |
| 101 | |
| 102 void print_base() { | |
| 103 print_symbol(class_name(), _class_mode); | |
| 104 tty->print("."); | |
| 105 print_symbol(method_name(), _method_mode); | |
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106 if (signature() != NULL) { |
| 0 | 107 tty->print(" "); |
| 108 signature()->print_symbol_on(tty); | |
| 109 } | |
| 110 } | |
| 111 | |
| 112 virtual void print() { | |
| 113 print_base(); | |
| 114 tty->cr(); | |
| 115 } | |
| 116 }; | |
| 117 | |
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118 MethodMatcher::MethodMatcher(Symbol* class_name, Symbol* method_name, MethodMatcher* next) { |
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119 _class_name = class_name; |
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120 _method_name = method_name; |
| 0 | 121 _next = next; |
| 122 _class_mode = MethodMatcher::Exact; | |
| 123 _method_mode = MethodMatcher::Exact; | |
| 124 _signature = NULL; | |
| 125 } | |
| 126 | |
| 127 | |
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128 MethodMatcher::MethodMatcher(Symbol* class_name, Mode class_mode, |
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129 Symbol* method_name, Mode method_mode, |
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130 Symbol* signature, MethodMatcher* next): |
| 0 | 131 _class_mode(class_mode) |
| 132 , _method_mode(method_mode) | |
| 133 , _next(next) | |
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134 , _class_name(class_name) |
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135 , _method_name(method_name) |
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136 , _signature(signature) { |
| 0 | 137 } |
| 138 | |
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139 bool MethodMatcher::match(Symbol* candidate, Symbol* match, Mode match_mode) { |
| 0 | 140 if (match_mode == Any) { |
| 141 return true; | |
| 142 } | |
| 143 | |
| 144 if (match_mode == Exact) { | |
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145 return candidate == match; |
| 0 | 146 } |
| 147 | |
| 148 ResourceMark rm; | |
| 149 const char * candidate_string = candidate->as_C_string(); | |
| 150 const char * match_string = match->as_C_string(); | |
| 151 | |
| 152 switch (match_mode) { | |
| 153 case Prefix: | |
| 154 return strstr(candidate_string, match_string) == candidate_string; | |
| 155 | |
| 156 case Suffix: { | |
| 157 size_t clen = strlen(candidate_string); | |
| 158 size_t mlen = strlen(match_string); | |
| 159 return clen >= mlen && strcmp(candidate_string + clen - mlen, match_string) == 0; | |
| 160 } | |
| 161 | |
| 162 case Substring: | |
| 163 return strstr(candidate_string, match_string) != NULL; | |
| 164 | |
| 165 default: | |
| 166 return false; | |
| 167 } | |
| 168 } | |
| 169 | |
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170 enum OptionType { |
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171 IntxType, |
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172 UintxType, |
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173 BoolType, |
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174 CcstrType, |
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175 UnknownType |
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176 }; |
| 0 | 177 |
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178 /* Methods to map real type names to OptionType */ |
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179 template<typename T> |
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180 static OptionType get_type_for() { |
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181 return UnknownType; |
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182 }; |
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183 |
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184 template<> OptionType get_type_for<intx>() { |
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185 return IntxType; |
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186 } |
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187 |
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188 template<> OptionType get_type_for<uintx>() { |
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189 return UintxType; |
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190 } |
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191 |
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192 template<> OptionType get_type_for<bool>() { |
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193 return BoolType; |
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194 } |
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195 |
| 20430 | 196 template<> OptionType get_type_for<ccstr>() { |
| 197 return CcstrType; | |
| 198 } | |
| 199 | |
| 200 template<typename T> | |
| 201 static const T copy_value(const T value) { | |
| 202 return value; | |
| 203 } | |
| 204 | |
| 205 template<> const ccstr copy_value<ccstr>(const ccstr value) { | |
| 206 return (const ccstr)strdup(value); | |
| 207 } | |
| 208 | |
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209 template <typename T> |
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210 class TypedMethodOptionMatcher : public MethodMatcher { |
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211 const char* _option; |
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212 OptionType _type; |
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213 const T _value; |
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214 |
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215 public: |
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216 TypedMethodOptionMatcher(Symbol* class_name, Mode class_mode, |
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217 Symbol* method_name, Mode method_mode, |
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218 Symbol* signature, const char* opt, |
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219 const T value, MethodMatcher* next) : |
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220 MethodMatcher(class_name, class_mode, method_name, method_mode, signature, next), |
| 20430 | 221 _type(get_type_for<T>()), _value(copy_value<T>(value)) { |
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222 _option = strdup(opt); |
| 0 | 223 } |
| 224 | |
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225 ~TypedMethodOptionMatcher() { |
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226 free((void*)_option); |
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227 } |
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228 |
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229 TypedMethodOptionMatcher* match(methodHandle method, const char* opt) { |
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230 TypedMethodOptionMatcher* current = this; |
| 0 | 231 while (current != NULL) { |
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232 current = (TypedMethodOptionMatcher*)current->find(method); |
| 0 | 233 if (current == NULL) { |
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234 return NULL; |
| 0 | 235 } |
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236 if (strcmp(current->_option, opt) == 0) { |
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237 return current; |
| 0 | 238 } |
| 239 current = current->next(); | |
| 240 } | |
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241 return NULL; |
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242 } |
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243 |
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244 TypedMethodOptionMatcher* next() { |
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245 return (TypedMethodOptionMatcher*)_next; |
| 0 | 246 } |
| 247 | |
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248 OptionType get_type(void) { |
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249 return _type; |
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250 }; |
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251 |
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252 T value() { return _value; } |
| 0 | 253 |
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254 void print() { |
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255 ttyLocker ttyl; |
| 0 | 256 print_base(); |
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257 tty->print(" %s", _option); |
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258 tty->print(" <unknown option type>"); |
| 0 | 259 tty->cr(); |
| 260 } | |
| 261 }; | |
| 262 | |
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263 template<> |
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264 void TypedMethodOptionMatcher<intx>::print() { |
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265 ttyLocker ttyl; |
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266 print_base(); |
| 20430 | 267 tty->print(" intx %s", _option); |
| 268 tty->print(" = " INTX_FORMAT, _value); | |
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269 tty->cr(); |
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270 }; |
| 0 | 271 |
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272 template<> |
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273 void TypedMethodOptionMatcher<uintx>::print() { |
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274 ttyLocker ttyl; |
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275 print_base(); |
| 20430 | 276 tty->print(" uintx %s", _option); |
| 277 tty->print(" = " UINTX_FORMAT, _value); | |
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278 tty->cr(); |
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279 }; |
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280 |
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281 template<> |
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282 void TypedMethodOptionMatcher<bool>::print() { |
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283 ttyLocker ttyl; |
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284 print_base(); |
| 20430 | 285 tty->print(" bool %s", _option); |
| 286 tty->print(" = %s", _value ? "true" : "false"); | |
| 287 tty->cr(); | |
| 288 }; | |
| 289 | |
| 290 template<> | |
| 291 void TypedMethodOptionMatcher<ccstr>::print() { | |
| 292 ttyLocker ttyl; | |
| 293 print_base(); | |
| 294 tty->print(" const char* %s", _option); | |
| 295 tty->print(" = '%s'", _value); | |
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296 tty->cr(); |
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297 }; |
| 0 | 298 |
| 299 // this must parallel the command_names below | |
| 300 enum OracleCommand { | |
| 301 UnknownCommand = -1, | |
| 302 OracleFirstCommand = 0, | |
| 303 BreakCommand = OracleFirstCommand, | |
| 304 PrintCommand, | |
| 305 ExcludeCommand, | |
| 306 InlineCommand, | |
| 307 DontInlineCommand, | |
| 308 CompileOnlyCommand, | |
| 309 LogCommand, | |
| 310 OptionCommand, | |
| 311 QuietCommand, | |
| 312 HelpCommand, | |
| 313 OracleCommandCount | |
| 314 }; | |
| 315 | |
| 316 // this must parallel the enum OracleCommand | |
| 317 static const char * command_names[] = { | |
| 318 "break", | |
| 319 "print", | |
| 320 "exclude", | |
| 321 "inline", | |
| 322 "dontinline", | |
| 323 "compileonly", | |
| 324 "log", | |
| 325 "option", | |
| 326 "quiet", | |
| 327 "help" | |
| 328 }; | |
| 329 | |
| 330 class MethodMatcher; | |
| 331 static MethodMatcher* lists[OracleCommandCount] = { 0, }; | |
| 332 | |
| 333 | |
| 334 static bool check_predicate(OracleCommand command, methodHandle method) { | |
| 335 return ((lists[command] != NULL) && | |
| 336 !method.is_null() && | |
| 337 lists[command]->match(method)); | |
| 338 } | |
| 339 | |
| 340 | |
| 341 static MethodMatcher* add_predicate(OracleCommand command, | |
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342 Symbol* class_name, MethodMatcher::Mode c_mode, |
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343 Symbol* method_name, MethodMatcher::Mode m_mode, |
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344 Symbol* signature) { |
| 0 | 345 assert(command != OptionCommand, "must use add_option_string"); |
| 346 if (command == LogCommand && !LogCompilation && lists[LogCommand] == NULL) | |
| 347 tty->print_cr("Warning: +LogCompilation must be enabled in order for individual methods to be logged."); | |
| 348 lists[command] = new MethodMatcher(class_name, c_mode, method_name, m_mode, signature, lists[command]); | |
| 349 return lists[command]; | |
| 350 } | |
| 351 | |
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352 template<typename T> |
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353 static MethodMatcher* add_option_string(Symbol* class_name, MethodMatcher::Mode c_mode, |
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354 Symbol* method_name, MethodMatcher::Mode m_mode, |
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355 Symbol* signature, |
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356 const char* option, |
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357 T value) { |
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358 lists[OptionCommand] = new TypedMethodOptionMatcher<T>(class_name, c_mode, method_name, m_mode, |
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359 signature, option, value, lists[OptionCommand]); |
| 0 | 360 return lists[OptionCommand]; |
| 361 } | |
| 362 | |
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363 template<typename T> |
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364 static bool get_option_value(methodHandle method, const char* option, T& value) { |
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365 TypedMethodOptionMatcher<T>* m; |
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366 if (lists[OptionCommand] != NULL |
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367 && (m = ((TypedMethodOptionMatcher<T>*)lists[OptionCommand])->match(method, option)) != NULL |
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368 && m->get_type() == get_type_for<T>()) { |
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369 value = m->value(); |
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370 return true; |
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371 } else { |
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372 return false; |
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373 } |
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374 } |
| 0 | 375 |
| 376 bool CompilerOracle::has_option_string(methodHandle method, const char* option) { | |
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377 bool value = false; |
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378 get_option_value(method, option, value); |
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379 return value; |
| 0 | 380 } |
| 381 | |
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382 template<typename T> |
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383 bool CompilerOracle::has_option_value(methodHandle method, const char* option, T& value) { |
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384 return ::get_option_value(method, option, value); |
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385 } |
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386 |
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387 // Explicit instantiation for all OptionTypes supported. |
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388 template bool CompilerOracle::has_option_value<intx>(methodHandle method, const char* option, intx& value); |
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389 template bool CompilerOracle::has_option_value<uintx>(methodHandle method, const char* option, uintx& value); |
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390 template bool CompilerOracle::has_option_value<bool>(methodHandle method, const char* option, bool& value); |
| 20430 | 391 template bool CompilerOracle::has_option_value<ccstr>(methodHandle method, const char* option, ccstr& value); |
| 0 | 392 |
| 393 bool CompilerOracle::should_exclude(methodHandle method, bool& quietly) { | |
| 394 quietly = true; | |
| 395 if (lists[ExcludeCommand] != NULL) { | |
| 396 if (lists[ExcludeCommand]->match(method)) { | |
| 397 quietly = _quiet; | |
| 398 return true; | |
| 399 } | |
| 400 } | |
| 401 | |
| 402 if (lists[CompileOnlyCommand] != NULL) { | |
| 403 return !lists[CompileOnlyCommand]->match(method); | |
| 404 } | |
| 405 return false; | |
| 406 } | |
| 407 | |
| 408 | |
| 409 bool CompilerOracle::should_inline(methodHandle method) { | |
| 410 return (check_predicate(InlineCommand, method)); | |
| 411 } | |
| 412 | |
| 413 | |
| 414 bool CompilerOracle::should_not_inline(methodHandle method) { | |
| 415 return (check_predicate(DontInlineCommand, method)); | |
| 416 } | |
| 417 | |
| 418 | |
| 419 bool CompilerOracle::should_print(methodHandle method) { | |
| 420 return (check_predicate(PrintCommand, method)); | |
| 421 } | |
| 422 | |
| 423 | |
| 424 bool CompilerOracle::should_log(methodHandle method) { | |
| 425 if (!LogCompilation) return false; | |
| 426 if (lists[LogCommand] == NULL) return true; // by default, log all | |
| 427 return (check_predicate(LogCommand, method)); | |
| 428 } | |
| 429 | |
| 430 | |
| 431 bool CompilerOracle::should_break_at(methodHandle method) { | |
| 432 return check_predicate(BreakCommand, method); | |
| 433 } | |
| 434 | |
| 435 | |
| 436 static OracleCommand parse_command_name(const char * line, int* bytes_read) { | |
| 437 assert(ARRAY_SIZE(command_names) == OracleCommandCount, | |
| 438 "command_names size mismatch"); | |
| 439 | |
| 440 *bytes_read = 0; | |
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441 char command[33]; |
| 0 | 442 int result = sscanf(line, "%32[a-z]%n", command, bytes_read); |
| 443 for (uint i = 0; i < ARRAY_SIZE(command_names); i++) { | |
| 444 if (strcmp(command, command_names[i]) == 0) { | |
| 445 return (OracleCommand)i; | |
| 446 } | |
| 447 } | |
| 448 return UnknownCommand; | |
| 449 } | |
| 450 | |
| 451 | |
| 452 static void usage() { | |
| 453 tty->print_cr(" CompileCommand and the CompilerOracle allows simple control over"); | |
| 454 tty->print_cr(" what's allowed to be compiled. The standard supported directives"); | |
| 455 tty->print_cr(" are exclude and compileonly. The exclude directive stops a method"); | |
| 456 tty->print_cr(" from being compiled and compileonly excludes all methods except for"); | |
| 457 tty->print_cr(" the ones mentioned by compileonly directives. The basic form of"); | |
| 458 tty->print_cr(" all commands is a command name followed by the name of the method"); | |
| 459 tty->print_cr(" in one of two forms: the standard class file format as in"); | |
| 460 tty->print_cr(" class/name.methodName or the PrintCompilation format"); | |
| 461 tty->print_cr(" class.name::methodName. The method name can optionally be followed"); | |
| 462 tty->print_cr(" by a space then the signature of the method in the class file"); | |
| 463 tty->print_cr(" format. Otherwise the directive applies to all methods with the"); | |
| 464 tty->print_cr(" same name and class regardless of signature. Leading and trailing"); | |
| 465 tty->print_cr(" *'s in the class and/or method name allows a small amount of"); | |
| 466 tty->print_cr(" wildcarding. "); | |
| 467 tty->cr(); | |
| 468 tty->print_cr(" Examples:"); | |
| 469 tty->cr(); | |
| 470 tty->print_cr(" exclude java/lang/StringBuffer.append"); | |
| 471 tty->print_cr(" compileonly java/lang/StringBuffer.toString ()Ljava/lang/String;"); | |
| 472 tty->print_cr(" exclude java/lang/String*.*"); | |
| 473 tty->print_cr(" exclude *.toString"); | |
| 474 } | |
| 475 | |
| 476 | |
| 477 // The characters allowed in a class or method name. All characters > 0x7f | |
| 478 // are allowed in order to handle obfuscated class files (e.g. Volano) | |
| 479 #define RANGEBASE "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789$_<>" \ | |
| 480 "\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f" \ | |
| 481 "\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f" \ | |
| 482 "\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf" \ | |
| 483 "\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf" \ | |
| 484 "\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf" \ | |
| 485 "\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf" \ | |
| 486 "\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef" \ | |
| 487 "\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff" | |
| 488 | |
| 489 #define RANGE0 "[*" RANGEBASE "]" | |
| 490 #define RANGEDOT "[*" RANGEBASE ".]" | |
| 491 #define RANGESLASH "[*" RANGEBASE "/]" | |
| 492 | |
| 493 | |
| 494 // Accept several syntaxes for these patterns | |
| 495 // original syntax | |
| 496 // cmd java.lang.String foo | |
| 497 // PrintCompilation syntax | |
| 498 // cmd java.lang.String::foo | |
| 499 // VM syntax | |
| 500 // cmd java/lang/String[. ]foo | |
| 501 // | |
| 502 | |
| 503 static const char* patterns[] = { | |
| 504 "%*[ \t]%255" RANGEDOT " " "%255" RANGE0 "%n", | |
| 505 "%*[ \t]%255" RANGEDOT "::" "%255" RANGE0 "%n", | |
| 506 "%*[ \t]%255" RANGESLASH "%*[ .]" "%255" RANGE0 "%n", | |
| 507 }; | |
| 508 | |
| 509 static MethodMatcher::Mode check_mode(char name[], const char*& error_msg) { | |
| 510 int match = MethodMatcher::Exact; | |
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511 while (name[0] == '*') { |
| 0 | 512 match |= MethodMatcher::Suffix; |
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513 // Copy remaining string plus NUL to the beginning |
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514 memmove(name, name + 1, strlen(name + 1) + 1); |
| 0 | 515 } |
| 516 | |
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517 if (strcmp(name, "*") == 0) return MethodMatcher::Any; |
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518 |
| 0 | 519 size_t len = strlen(name); |
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520 while (len > 0 && name[len - 1] == '*') { |
| 0 | 521 match |= MethodMatcher::Prefix; |
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522 name[--len] = '\0'; |
| 0 | 523 } |
| 524 | |
| 525 if (strstr(name, "*") != NULL) { | |
| 526 error_msg = " Embedded * not allowed"; | |
| 527 return MethodMatcher::Unknown; | |
| 528 } | |
| 529 return (MethodMatcher::Mode)match; | |
| 530 } | |
| 531 | |
| 532 static bool scan_line(const char * line, | |
| 533 char class_name[], MethodMatcher::Mode* c_mode, | |
| 534 char method_name[], MethodMatcher::Mode* m_mode, | |
| 535 int* bytes_read, const char*& error_msg) { | |
| 536 *bytes_read = 0; | |
| 537 error_msg = NULL; | |
| 538 for (uint i = 0; i < ARRAY_SIZE(patterns); i++) { | |
| 539 if (2 == sscanf(line, patterns[i], class_name, method_name, bytes_read)) { | |
| 540 *c_mode = check_mode(class_name, error_msg); | |
| 541 *m_mode = check_mode(method_name, error_msg); | |
| 542 return *c_mode != MethodMatcher::Unknown && *m_mode != MethodMatcher::Unknown; | |
| 543 } | |
| 544 } | |
| 545 return false; | |
| 546 } | |
| 547 | |
| 548 | |
| 549 | |
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550 // Scan next flag and value in line, return MethodMatcher object on success, NULL on failure. |
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551 // On failure, error_msg contains description for the first error. |
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552 // For future extensions: set error_msg on first error. |
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553 static MethodMatcher* scan_flag_and_value(const char* type, const char* line, int& total_bytes_read, |
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554 Symbol* c_name, MethodMatcher::Mode c_match, |
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555 Symbol* m_name, MethodMatcher::Mode m_match, |
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556 Symbol* signature, |
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557 char* errorbuf, const int buf_size) { |
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558 total_bytes_read = 0; |
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559 int bytes_read = 0; |
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560 char flag[256]; |
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561 |
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562 // Read flag name. |
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563 if (sscanf(line, "%*[ \t]%255[a-zA-Z0-9]%n", flag, &bytes_read) == 1) { |
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564 line += bytes_read; |
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565 total_bytes_read += bytes_read; |
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566 |
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567 // Read value. |
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568 if (strcmp(type, "intx") == 0) { |
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569 intx value; |
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570 if (sscanf(line, "%*[ \t]" INTX_FORMAT "%n", &value, &bytes_read) == 1) { |
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571 total_bytes_read += bytes_read; |
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572 return add_option_string(c_name, c_match, m_name, m_match, signature, flag, value); |
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573 } else { |
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574 jio_snprintf(errorbuf, buf_size, " Value cannot be read for flag %s of type %s ", flag, type); |
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575 } |
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576 } else if (strcmp(type, "uintx") == 0) { |
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577 uintx value; |
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578 if (sscanf(line, "%*[ \t]" UINTX_FORMAT "%n", &value, &bytes_read) == 1) { |
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579 total_bytes_read += bytes_read; |
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580 return add_option_string(c_name, c_match, m_name, m_match, signature, flag, value); |
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581 } else { |
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582 jio_snprintf(errorbuf, buf_size, " Value cannot be read for flag %s of type %s", flag, type); |
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583 } |
| 20430 | 584 } else if (strcmp(type, "ccstr") == 0) { |
| 585 ResourceMark rm; | |
| 586 char* value = NEW_RESOURCE_ARRAY(char, strlen(line) + 1); | |
| 587 if (sscanf(line, "%*[ \t]%255[_a-zA-Z0-9]%n", value, &bytes_read) == 1) { | |
| 588 total_bytes_read += bytes_read; | |
| 589 return add_option_string(c_name, c_match, m_name, m_match, signature, flag, (ccstr)value); | |
| 590 } else { | |
| 591 jio_snprintf(errorbuf, buf_size, " Value cannot be read for flag %s of type %s", flag, type); | |
| 592 } | |
| 593 } else if (strcmp(type, "ccstrlist") == 0) { | |
| 594 // Accumulates several strings into one. The internal type is ccstr. | |
| 595 ResourceMark rm; | |
| 596 char* value = NEW_RESOURCE_ARRAY(char, strlen(line) + 1); | |
| 597 char* next_value = value; | |
| 598 if (sscanf(line, "%*[ \t]%255[_a-zA-Z0-9]%n", next_value, &bytes_read) == 1) { | |
| 599 total_bytes_read += bytes_read; | |
| 600 line += bytes_read; | |
| 601 next_value += bytes_read; | |
| 602 char* end_value = next_value-1; | |
| 603 while (sscanf(line, "%*[ \t]%255[_a-zA-Z0-9]%n", next_value, &bytes_read) == 1) { | |
| 604 total_bytes_read += bytes_read; | |
| 605 line += bytes_read; | |
| 606 *end_value = ' '; // override '\0' | |
| 607 next_value += bytes_read; | |
| 608 end_value = next_value-1; | |
| 609 } | |
| 610 return add_option_string(c_name, c_match, m_name, m_match, signature, flag, (ccstr)value); | |
| 611 } else { | |
| 612 jio_snprintf(errorbuf, buf_size, " Value cannot be read for flag %s of type %s", flag, type); | |
| 613 } | |
|
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614 } else if (strcmp(type, "bool") == 0) { |
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615 char value[256]; |
|
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616 if (sscanf(line, "%*[ \t]%255[a-zA-Z]%n", value, &bytes_read) == 1) { |
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617 if (strcmp(value, "true") == 0) { |
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618 total_bytes_read += bytes_read; |
|
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619 return add_option_string(c_name, c_match, m_name, m_match, signature, flag, true); |
| 20430 | 620 } else if (strcmp(value, "false") == 0) { |
| 621 total_bytes_read += bytes_read; | |
| 622 return add_option_string(c_name, c_match, m_name, m_match, signature, flag, false); | |
|
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623 } else { |
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624 jio_snprintf(errorbuf, buf_size, " Value cannot be read for flag %s of type %s", flag, type); |
|
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625 } |
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626 } else { |
|
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627 jio_snprintf(errorbuf, sizeof(errorbuf), " Value cannot be read for flag %s of type %s", flag, type); |
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628 } |
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629 } else { |
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630 jio_snprintf(errorbuf, sizeof(errorbuf), " Type %s not supported ", type); |
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631 } |
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632 } else { |
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633 jio_snprintf(errorbuf, sizeof(errorbuf), " Flag name for type %s should be alphanumeric ", type); |
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634 } |
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635 return NULL; |
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636 } |
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637 |
| 0 | 638 void CompilerOracle::parse_from_line(char* line) { |
| 639 if (line[0] == '\0') return; | |
| 640 if (line[0] == '#') return; | |
| 641 | |
| 642 bool have_colon = (strstr(line, "::") != NULL); | |
| 643 for (char* lp = line; *lp != '\0'; lp++) { | |
| 644 // Allow '.' to separate the class name from the method name. | |
| 645 // This is the preferred spelling of methods: | |
| 646 // exclude java/lang/String.indexOf(I)I | |
| 647 // Allow ',' for spaces (eases command line quoting). | |
| 648 // exclude,java/lang/String.indexOf | |
| 649 // For backward compatibility, allow space as separator also. | |
| 650 // exclude java/lang/String indexOf | |
| 651 // exclude,java/lang/String,indexOf | |
| 652 // For easy cut-and-paste of method names, allow VM output format | |
|
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653 // as produced by Method::print_short_name: |
| 0 | 654 // exclude java.lang.String::indexOf |
| 655 // For simple implementation convenience here, convert them all to space. | |
| 656 if (have_colon) { | |
| 657 if (*lp == '.') *lp = '/'; // dots build the package prefix | |
| 658 if (*lp == ':') *lp = ' '; | |
| 659 } | |
| 660 if (*lp == ',' || *lp == '.') *lp = ' '; | |
| 661 } | |
| 662 | |
| 663 char* original_line = line; | |
| 664 int bytes_read; | |
| 665 OracleCommand command = parse_command_name(line, &bytes_read); | |
| 666 line += bytes_read; | |
|
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667 ResourceMark rm; |
| 0 | 668 |
|
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669 if (command == UnknownCommand) { |
|
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670 ttyLocker ttyl; |
|
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671 tty->print_cr("CompilerOracle: unrecognized line"); |
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672 tty->print_cr(" \"%s\"", original_line); |
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673 return; |
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|
674 } |
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675 |
| 0 | 676 if (command == QuietCommand) { |
| 677 _quiet = true; | |
| 678 return; | |
| 679 } | |
| 680 | |
| 681 if (command == HelpCommand) { | |
| 682 usage(); | |
| 683 return; | |
| 684 } | |
| 685 | |
| 686 MethodMatcher::Mode c_match = MethodMatcher::Exact; | |
| 687 MethodMatcher::Mode m_match = MethodMatcher::Exact; | |
| 688 char class_name[256]; | |
| 689 char method_name[256]; | |
| 690 char sig[1024]; | |
| 691 char errorbuf[1024]; | |
|
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692 const char* error_msg = NULL; // description of first error that appears |
| 0 | 693 MethodMatcher* match = NULL; |
| 694 | |
| 695 if (scan_line(line, class_name, &c_match, method_name, &m_match, &bytes_read, error_msg)) { | |
| 696 EXCEPTION_MARK; | |
|
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697 Symbol* c_name = SymbolTable::new_symbol(class_name, CHECK); |
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698 Symbol* m_name = SymbolTable::new_symbol(method_name, CHECK); |
|
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699 Symbol* signature = NULL; |
| 0 | 700 |
| 701 line += bytes_read; | |
| 702 // there might be a signature following the method. | |
| 703 // signatures always begin with ( so match that by hand | |
|
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|
704 if (1 == sscanf(line, "%*[ \t](%254[[);/" RANGEBASE "]%n", sig + 1, &bytes_read)) { |
| 0 | 705 sig[0] = '('; |
| 706 line += bytes_read; | |
|
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707 signature = SymbolTable::new_symbol(sig, CHECK); |
| 0 | 708 } |
| 709 | |
| 710 if (command == OptionCommand) { | |
|
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711 // Look for trailing options. |
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712 // |
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713 // Two types of trailing options are |
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714 // supported: |
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715 // |
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716 // (1) CompileCommand=option,Klass::method,flag |
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717 // (2) CompileCommand=option,Klass::method,type,flag,value |
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718 // |
|
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719 // Type (1) is used to support ciMethod::has_option("someflag") |
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720 // (i.e., to check if a flag "someflag" is enabled for a method). |
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721 // |
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722 // Type (2) is used to support options with a value. Values can have the |
| 20430 | 723 // the following types: intx, uintx, bool, ccstr, and ccstrlist. |
|
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724 // |
|
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725 // For future extensions: extend scan_flag_and_value() |
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726 char option[256]; // stores flag for Type (1) and type of Type (2) |
| 0 | 727 while (sscanf(line, "%*[ \t]%255[a-zA-Z0-9]%n", option, &bytes_read) == 1) { |
| 728 if (match != NULL && !_quiet) { | |
| 729 // Print out the last match added | |
|
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|
730 ttyLocker ttyl; |
| 0 | 731 tty->print("CompilerOracle: %s ", command_names[command]); |
| 732 match->print(); | |
| 733 } | |
| 734 line += bytes_read; | |
|
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735 |
|
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736 if (strcmp(option, "intx") == 0 |
|
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737 || strcmp(option, "uintx") == 0 |
|
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738 || strcmp(option, "bool") == 0 |
|
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739 || strcmp(option, "ccstr") == 0 |
|
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740 || strcmp(option, "ccstrlist") == 0 |
|
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741 ) { |
|
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742 |
|
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743 // Type (2) option: parse flag name and value. |
|
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744 match = scan_flag_and_value(option, line, bytes_read, |
|
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745 c_name, c_match, m_name, m_match, signature, |
|
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|
746 errorbuf, sizeof(errorbuf)); |
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747 if (match == NULL) { |
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748 error_msg = errorbuf; |
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749 break; |
|
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750 } |
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751 line += bytes_read; |
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752 } else { |
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753 // Type (1) option |
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754 match = add_option_string(c_name, c_match, m_name, m_match, signature, option, true); |
|
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755 } |
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756 } // while( |
| 0 | 757 } else { |
|
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758 match = add_predicate(command, c_name, c_match, m_name, m_match, signature); |
| 0 | 759 } |
| 760 } | |
| 761 | |
|
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762 ttyLocker ttyl; |
|
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763 if (error_msg != NULL) { |
|
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764 // an error has happened |
| 0 | 765 tty->print_cr("CompilerOracle: unrecognized line"); |
| 766 tty->print_cr(" \"%s\"", original_line); | |
| 767 if (error_msg != NULL) { | |
|
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768 tty->print_cr("%s", error_msg); |
| 0 | 769 } |
|
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770 } else { |
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771 // check for remaining characters |
|
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772 bytes_read = 0; |
|
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773 sscanf(line, "%*[ \t]%n", &bytes_read); |
|
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774 if (line[bytes_read] != '\0') { |
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775 tty->print_cr("CompilerOracle: unrecognized line"); |
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776 tty->print_cr(" \"%s\"", original_line); |
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777 tty->print_cr(" Unrecognized text %s after command ", line); |
|
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778 } else if (match != NULL && !_quiet) { |
|
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779 tty->print("CompilerOracle: %s ", command_names[command]); |
|
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780 match->print(); |
|
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781 } |
| 0 | 782 } |
| 783 } | |
| 784 | |
|
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785 static const char* default_cc_file = ".hotspot_compiler"; |
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786 |
| 0 | 787 static const char* cc_file() { |
|
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788 #ifdef ASSERT |
| 0 | 789 if (CompileCommandFile == NULL) |
|
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790 return default_cc_file; |
|
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791 #endif |
| 0 | 792 return CompileCommandFile; |
| 793 } | |
|
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794 |
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795 bool CompilerOracle::has_command_file() { |
|
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796 return cc_file() != NULL; |
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797 } |
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798 |
| 0 | 799 bool CompilerOracle::_quiet = false; |
| 800 | |
| 801 void CompilerOracle::parse_from_file() { | |
|
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802 assert(has_command_file(), "command file must be specified"); |
| 0 | 803 FILE* stream = fopen(cc_file(), "rt"); |
| 804 if (stream == NULL) return; | |
| 805 | |
| 806 char token[1024]; | |
| 807 int pos = 0; | |
| 808 int c = getc(stream); | |
| 6901 | 809 while(c != EOF && pos < (int)(sizeof(token)-1)) { |
| 0 | 810 if (c == '\n') { |
| 811 token[pos++] = '\0'; | |
| 812 parse_from_line(token); | |
| 813 pos = 0; | |
| 814 } else { | |
| 815 token[pos++] = c; | |
| 816 } | |
| 817 c = getc(stream); | |
| 818 } | |
| 819 token[pos++] = '\0'; | |
| 820 parse_from_line(token); | |
| 821 | |
| 822 fclose(stream); | |
| 823 } | |
| 824 | |
| 825 void CompilerOracle::parse_from_string(const char* str, void (*parse_line)(char*)) { | |
| 826 char token[1024]; | |
| 827 int pos = 0; | |
| 828 const char* sp = str; | |
| 829 int c = *sp++; | |
| 6901 | 830 while (c != '\0' && pos < (int)(sizeof(token)-1)) { |
| 0 | 831 if (c == '\n') { |
| 832 token[pos++] = '\0'; | |
| 833 parse_line(token); | |
| 834 pos = 0; | |
| 835 } else { | |
| 836 token[pos++] = c; | |
| 837 } | |
| 838 c = *sp++; | |
| 839 } | |
| 840 token[pos++] = '\0'; | |
| 841 parse_line(token); | |
| 842 } | |
| 843 | |
| 844 void CompilerOracle::append_comment_to_file(const char* message) { | |
|
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845 assert(has_command_file(), "command file must be specified"); |
| 0 | 846 fileStream stream(fopen(cc_file(), "at")); |
| 847 stream.print("# "); | |
| 848 for (int index = 0; message[index] != '\0'; index++) { | |
| 849 stream.put(message[index]); | |
| 850 if (message[index] == '\n') stream.print("# "); | |
| 851 } | |
| 852 stream.cr(); | |
| 853 } | |
| 854 | |
| 855 void CompilerOracle::append_exclude_to_file(methodHandle method) { | |
|
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856 assert(has_command_file(), "command file must be specified"); |
| 0 | 857 fileStream stream(fopen(cc_file(), "at")); |
| 858 stream.print("exclude "); | |
|
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859 method->method_holder()->name()->print_symbol_on(&stream); |
| 0 | 860 stream.print("."); |
| 861 method->name()->print_symbol_on(&stream); | |
| 862 method->signature()->print_symbol_on(&stream); | |
| 863 stream.cr(); | |
| 864 stream.cr(); | |
| 865 } | |
| 866 | |
| 867 | |
| 868 void compilerOracle_init() { | |
| 869 CompilerOracle::parse_from_string(CompileCommand, CompilerOracle::parse_from_line); | |
| 870 CompilerOracle::parse_from_string(CompileOnly, CompilerOracle::parse_compile_only); | |
|
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871 if (CompilerOracle::has_command_file()) { |
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872 CompilerOracle::parse_from_file(); |
|
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873 } else { |
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874 struct stat buf; |
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875 if (os::stat(default_cc_file, &buf) == 0) { |
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876 warning("%s file is present but has been ignored. " |
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877 "Run with -XX:CompileCommandFile=%s to load the file.", |
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878 default_cc_file, default_cc_file); |
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879 } |
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880 } |
|
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881 if (lists[PrintCommand] != NULL) { |
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882 if (PrintAssembly) { |
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883 warning("CompileCommand and/or %s file contains 'print' commands, but PrintAssembly is also enabled", default_cc_file); |
|
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884 } else if (FLAG_IS_DEFAULT(DebugNonSafepoints)) { |
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885 warning("printing of assembly code is enabled; turning on DebugNonSafepoints to gain additional output"); |
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886 DebugNonSafepoints = true; |
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887 } |
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|
888 } |
| 0 | 889 } |
| 890 | |
| 891 | |
| 892 void CompilerOracle::parse_compile_only(char * line) { | |
| 893 int i; | |
| 894 char name[1024]; | |
| 895 const char* className = NULL; | |
| 896 const char* methodName = NULL; | |
| 897 | |
| 898 bool have_colon = (strstr(line, "::") != NULL); | |
| 899 char method_sep = have_colon ? ':' : '.'; | |
| 900 | |
| 901 if (Verbose) { | |
|
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|
902 tty->print_cr("%s", line); |
| 0 | 903 } |
| 904 | |
| 905 ResourceMark rm; | |
| 906 while (*line != '\0') { | |
| 907 MethodMatcher::Mode c_match = MethodMatcher::Exact; | |
| 908 MethodMatcher::Mode m_match = MethodMatcher::Exact; | |
| 909 | |
| 910 for (i = 0; | |
| 911 i < 1024 && *line != '\0' && *line != method_sep && *line != ',' && !isspace(*line); | |
| 912 line++, i++) { | |
| 913 name[i] = *line; | |
| 914 if (name[i] == '.') name[i] = '/'; // package prefix uses '/' | |
| 915 } | |
| 916 | |
| 917 if (i > 0) { | |
| 918 char* newName = NEW_RESOURCE_ARRAY( char, i + 1); | |
| 919 if (newName == NULL) | |
| 920 return; | |
| 921 strncpy(newName, name, i); | |
| 922 newName[i] = '\0'; | |
| 923 | |
| 924 if (className == NULL) { | |
| 925 className = newName; | |
| 926 c_match = MethodMatcher::Prefix; | |
| 927 } else { | |
| 928 methodName = newName; | |
| 929 } | |
| 930 } | |
| 931 | |
| 932 if (*line == method_sep) { | |
| 933 if (className == NULL) { | |
| 934 className = ""; | |
| 935 c_match = MethodMatcher::Any; | |
| 936 } else { | |
| 937 // foo/bar.blah is an exact match on foo/bar, bar.blah is a suffix match on bar | |
| 938 if (strchr(className, '/') != NULL) { | |
| 939 c_match = MethodMatcher::Exact; | |
| 940 } else { | |
| 941 c_match = MethodMatcher::Suffix; | |
| 942 } | |
| 943 } | |
| 944 } else { | |
| 945 // got foo or foo/bar | |
| 946 if (className == NULL) { | |
| 947 ShouldNotReachHere(); | |
| 948 } else { | |
| 949 // got foo or foo/bar | |
| 950 if (strchr(className, '/') != NULL) { | |
| 951 c_match = MethodMatcher::Prefix; | |
| 952 } else if (className[0] == '\0') { | |
| 953 c_match = MethodMatcher::Any; | |
| 954 } else { | |
| 955 c_match = MethodMatcher::Substring; | |
| 956 } | |
| 957 } | |
| 958 } | |
| 959 | |
| 960 // each directive is terminated by , or NUL or . followed by NUL | |
| 961 if (*line == ',' || *line == '\0' || (line[0] == '.' && line[1] == '\0')) { | |
| 962 if (methodName == NULL) { | |
| 963 methodName = ""; | |
| 964 if (*line != method_sep) { | |
| 965 m_match = MethodMatcher::Any; | |
| 966 } | |
| 967 } | |
| 968 | |
| 969 EXCEPTION_MARK; | |
|
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|
970 Symbol* c_name = SymbolTable::new_symbol(className, CHECK); |
|
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|
971 Symbol* m_name = SymbolTable::new_symbol(methodName, CHECK); |
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|
972 Symbol* signature = NULL; |
| 0 | 973 |
| 974 add_predicate(CompileOnlyCommand, c_name, c_match, m_name, m_match, signature); | |
| 975 if (PrintVMOptions) { | |
| 976 tty->print("CompileOnly: compileonly "); | |
| 977 lists[CompileOnlyCommand]->print(); | |
| 978 } | |
| 979 | |
| 980 className = NULL; | |
| 981 methodName = NULL; | |
| 982 } | |
| 983 | |
| 984 line = *line == '\0' ? line : line + 1; | |
| 985 } | |
| 986 } |