1 /* 2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. 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 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 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" 32 #include "utilities/macros.hpp" 33 #include "utilities/top.hpp" 34 #if INCLUDE_ALL_GCS 35 #include "gc_implementation/g1/g1_globals.hpp" 36 #endif // INCLUDE_ALL_GCS 37 #ifdef COMPILER1 38 #include "c1/c1_globals.hpp" 39 #endif 40 #ifdef COMPILER2 41 #include "opto/c2_globals.hpp" 42 #endif 43 #ifdef SHARK 44 #include "shark/shark_globals.hpp" 45 #endif 46 47 RUNTIME_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PD_DEVELOPER_FLAG, \ 48 MATERIALIZE_PRODUCT_FLAG, MATERIALIZE_PD_PRODUCT_FLAG, \ 49 MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_EXPERIMENTAL_FLAG, \ 50 MATERIALIZE_NOTPRODUCT_FLAG, \ 51 MATERIALIZE_MANAGEABLE_FLAG, MATERIALIZE_PRODUCT_RW_FLAG, \ 52 MATERIALIZE_LP64_PRODUCT_FLAG) 53 54 RUNTIME_OS_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PD_DEVELOPER_FLAG, \ 55 MATERIALIZE_PRODUCT_FLAG, MATERIALIZE_PD_PRODUCT_FLAG, \ 56 MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_NOTPRODUCT_FLAG) 57 58 ARCH_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PRODUCT_FLAG, \ 59 MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_EXPERIMENTAL_FLAG, \ 60 MATERIALIZE_NOTPRODUCT_FLAG) 61 62 MATERIALIZE_FLAGS_EXT 63 64 65 void Flag::check_writable() { 66 if (is_constant_in_binary()) { 67 fatal(err_msg("flag is constant: %s", _name)); 68 } 69 } 70 71 bool Flag::is_bool() const { 72 return strcmp(_type, "bool") == 0; 73 } 74 75 bool Flag::get_bool() const { 76 return *((bool*) _addr); 77 } 78 79 void Flag::set_bool(bool value) { 80 check_writable(); 81 *((bool*) _addr) = value; 82 } 83 84 bool Flag::is_intx() const { 85 return strcmp(_type, "intx") == 0; 86 } 87 88 intx Flag::get_intx() const { 89 return *((intx*) _addr); 90 } 91 92 void Flag::set_intx(intx value) { 93 check_writable(); 94 *((intx*) _addr) = value; 95 } 96 97 bool Flag::is_uintx() const { 98 return strcmp(_type, "uintx") == 0; 99 } 100 101 uintx Flag::get_uintx() const { 102 return *((uintx*) _addr); 103 } 104 105 void Flag::set_uintx(uintx value) { 106 check_writable(); 107 *((uintx*) _addr) = value; 108 } 109 110 bool Flag::is_uint64_t() const { 111 return strcmp(_type, "uint64_t") == 0; 112 } 113 114 uint64_t Flag::get_uint64_t() const { 115 return *((uint64_t*) _addr); 116 } 117 118 void Flag::set_uint64_t(uint64_t value) { 119 check_writable(); 120 *((uint64_t*) _addr) = value; 121 } 122 123 bool Flag::is_double() const { 124 return strcmp(_type, "double") == 0; 125 } 126 127 double Flag::get_double() const { 128 return *((double*) _addr); 129 } 130 131 void Flag::set_double(double value) { 132 check_writable(); 133 *((double*) _addr) = value; 134 } 135 136 bool Flag::is_ccstr() const { 137 return strcmp(_type, "ccstr") == 0 || strcmp(_type, "ccstrlist") == 0; 138 } 139 140 bool Flag::ccstr_accumulates() const { 141 return strcmp(_type, "ccstrlist") == 0; 142 } 143 144 ccstr Flag::get_ccstr() const { 145 return *((ccstr*) _addr); 146 } 147 148 void Flag::set_ccstr(ccstr value) { 149 check_writable(); 150 *((ccstr*) _addr) = value; 151 } 152 153 154 Flag::Flags Flag::get_origin() { 155 return Flags(_flags & VALUE_ORIGIN_MASK); 156 } 157 158 void Flag::set_origin(Flags origin) { 159 assert((origin & VALUE_ORIGIN_MASK) == origin, "sanity"); 160 _flags = Flags((_flags & ~VALUE_ORIGIN_MASK) | origin); 161 } 162 163 bool Flag::is_default() { 164 return (get_origin() == DEFAULT); 165 } 166 167 bool Flag::is_ergonomic() { 168 return (get_origin() == ERGONOMIC); 169 } 170 171 bool Flag::is_command_line() { 172 return (get_origin() == COMMAND_LINE); 173 } 174 175 bool Flag::is_product() const { 176 return (_flags & KIND_PRODUCT) != 0; 177 } 178 179 bool Flag::is_manageable() const { 180 return (_flags & KIND_MANAGEABLE) != 0; 181 } 182 183 bool Flag::is_diagnostic() const { 184 return (_flags & KIND_DIAGNOSTIC) != 0; 185 } 186 187 bool Flag::is_experimental() const { 188 return (_flags & KIND_EXPERIMENTAL) != 0; 189 } 190 191 bool Flag::is_notproduct() const { 192 return (_flags & KIND_NOT_PRODUCT) != 0; 193 } 194 195 bool Flag::is_develop() const { 196 return (_flags & KIND_DEVELOP) != 0; 197 } 198 199 bool Flag::is_read_write() const { 200 return (_flags & KIND_READ_WRITE) != 0; 201 } 202 203 bool Flag::is_commercial() const { 204 return (_flags & KIND_COMMERCIAL) != 0; 205 } 206 207 /** 208 * Returns if this flag is a constant in the binary. Right now this is 209 * true for notproduct and develop flags in product builds. 210 */ 211 bool Flag::is_constant_in_binary() const { 212 #ifdef PRODUCT 213 return is_notproduct() || is_develop(); 214 #else 215 return false; 216 #endif 217 } 218 219 bool Flag::is_unlocker() const { 220 return strcmp(_name, "UnlockDiagnosticVMOptions") == 0 || 221 strcmp(_name, "UnlockExperimentalVMOptions") == 0 || 222 is_unlocker_ext(); 223 } 224 225 bool Flag::is_unlocked() const { 226 if (is_diagnostic()) { 227 return UnlockDiagnosticVMOptions; 228 } 229 if (is_experimental()) { 230 return UnlockExperimentalVMOptions; 231 } 232 return is_unlocked_ext(); 233 } 234 235 // Get custom message for this locked flag, or return NULL if 236 // none is available. 237 void Flag::get_locked_message(char* buf, int buflen) const { 238 get_locked_message_ext(buf, buflen); 239 } 240 241 bool Flag::is_writeable() const { 242 return is_manageable() || (is_product() && is_read_write()) || is_writeable_ext(); 243 } 244 245 // All flags except "manageable" are assumed to be internal flags. 246 // Long term, we need to define a mechanism to specify which flags 247 // are external/stable and change this function accordingly. 248 bool Flag::is_external() const { 249 return is_manageable() || is_external_ext(); 250 } 251 252 253 // Length of format string (e.g. "%.1234s") for printing ccstr below 254 #define FORMAT_BUFFER_LEN 16 255 256 void Flag::print_on(outputStream* st, bool withComments) { 257 // Don't print notproduct and develop flags in a product build. 258 if (is_constant_in_binary()) { 259 return; 260 } 261 262 st->print("%9s %-40s %c= ", _type, _name, (!is_default() ? ':' : ' ')); 263 264 if (is_bool()) { 265 st->print("%-16s", get_bool() ? "true" : "false"); 266 } 267 if (is_intx()) { 268 st->print("%-16ld", get_intx()); 269 } 270 if (is_uintx()) { 271 st->print("%-16lu", get_uintx()); 272 } 273 if (is_uint64_t()) { 274 st->print("%-16lu", get_uint64_t()); 275 } 276 if (is_double()) { 277 st->print("%-16f", get_double()); 278 } 279 if (is_ccstr()) { 280 const char* cp = get_ccstr(); 281 if (cp != NULL) { 282 const char* eol; 283 while ((eol = strchr(cp, '\n')) != NULL) { 284 char format_buffer[FORMAT_BUFFER_LEN]; 285 size_t llen = pointer_delta(eol, cp, sizeof(char)); 286 jio_snprintf(format_buffer, FORMAT_BUFFER_LEN, 287 "%%." SIZE_FORMAT "s", llen); 288 st->print(format_buffer, cp); 289 st->cr(); 290 cp = eol+1; 291 st->print("%5s %-35s += ", "", _name); 292 } 293 st->print("%-16s", cp); 294 } 295 else st->print("%-16s", ""); 296 } 297 298 st->print("%-20"); 299 print_kind(st); 300 301 if (withComments) { 302 #ifndef PRODUCT 303 st->print("%s", _doc); 304 #endif 305 } 306 st->cr(); 307 } 308 309 void Flag::print_kind(outputStream* st) { 310 struct Data { 311 int flag; 312 const char* name; 313 }; 314 315 Data data[] = { 316 { KIND_C1, "C1" }, 317 { KIND_C2, "C2" }, 318 { KIND_ARCH, "ARCH" }, 319 { KIND_SHARK, "SHARK" }, 320 { KIND_PLATFORM_DEPENDENT, "pd" }, 321 { KIND_PRODUCT, "product" }, 322 { KIND_MANAGEABLE, "manageable" }, 323 { KIND_DIAGNOSTIC, "diagnostic" }, 324 { KIND_EXPERIMENTAL, "experimental" }, 325 { KIND_COMMERCIAL, "commercial" }, 326 { KIND_NOT_PRODUCT, "notproduct" }, 327 { KIND_DEVELOP, "develop" }, 328 { KIND_LP64_PRODUCT, "lp64_product" }, 329 { KIND_READ_WRITE, "rw" }, 330 { -1, "" } 331 }; 332 333 if ((_flags & KIND_MASK) != 0) { 334 st->print("{"); 335 bool is_first = true; 336 337 for (int i = 0; data[i].flag != -1; i++) { 338 Data d = data[i]; 339 if ((_flags & d.flag) != 0) { 340 if (is_first) { 341 is_first = false; 342 } else { 343 st->print(" "); 344 } 345 st->print(d.name); 346 } 347 } 348 349 st->print("}"); 350 } 351 } 352 353 void Flag::print_as_flag(outputStream* st) { 354 if (is_bool()) { 355 st->print("-XX:%s%s", get_bool() ? "+" : "-", _name); 356 } else if (is_intx()) { 357 st->print("-XX:%s=" INTX_FORMAT, _name, get_intx()); 358 } else if (is_uintx()) { 359 st->print("-XX:%s=" UINTX_FORMAT, _name, get_uintx()); 360 } else if (is_uint64_t()) { 361 st->print("-XX:%s=" UINT64_FORMAT, _name, get_uint64_t()); 362 } else if (is_double()) { 363 st->print("-XX:%s=%f", _name, get_double()); 364 } else if (is_ccstr()) { 365 st->print("-XX:%s=", _name); 366 const char* cp = get_ccstr(); 367 if (cp != NULL) { 368 // Need to turn embedded '\n's back into separate arguments 369 // Not so efficient to print one character at a time, 370 // but the choice is to do the transformation to a buffer 371 // and print that. And this need not be efficient. 372 for (; *cp != '\0'; cp += 1) { 373 switch (*cp) { 374 default: 375 st->print("%c", *cp); 376 break; 377 case '\n': 378 st->print(" -XX:%s=", _name); 379 break; 380 } 381 } 382 } 383 } else { 384 ShouldNotReachHere(); 385 } 386 } 387 388 // 4991491 do not "optimize out" the was_set false values: omitting them 389 // tickles a Microsoft compiler bug causing flagTable to be malformed 390 391 #define NAME(name) NOT_PRODUCT(&name) PRODUCT_ONLY(&CONST_##name) 392 393 #define RUNTIME_PRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_PRODUCT) }, 394 #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) }, 395 #define RUNTIME_DIAGNOSTIC_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_DIAGNOSTIC) }, 396 #define RUNTIME_EXPERIMENTAL_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_EXPERIMENTAL) }, 397 #define RUNTIME_MANAGEABLE_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_MANAGEABLE) }, 398 #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) }, 399 #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) }, 400 #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) }, 401 #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) }, 402 403 #ifdef _LP64 404 #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) }, 405 #else 406 #define RUNTIME_LP64_PRODUCT_FLAG_STRUCT(type, name, value, doc) /* flag is constant */ 407 #endif // _LP64 408 409 #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) }, 410 #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) }, 411 #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) }, 412 #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) }, 413 #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) }, 414 #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) }, 415 416 #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) }, 417 #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) }, 418 #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) }, 419 #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) }, 420 #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) }, 421 #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) }, 422 #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) }, 423 424 #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) }, 425 #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) }, 426 #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) }, 427 #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) }, 428 #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) }, 429 430 #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) }, 431 #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) }, 432 #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) }, 433 #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) }, 434 #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) }, 435 #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) }, 436 437 static Flag flagTable[] = { 438 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) 439 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) 440 #if INCLUDE_ALL_GCS 441 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) 442 #endif // INCLUDE_ALL_GCS 443 #ifdef COMPILER1 444 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) 445 #endif 446 #ifdef COMPILER2 447 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) 448 #endif 449 #ifdef SHARK 450 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) 451 #endif 452 ARCH_FLAGS(ARCH_DEVELOP_FLAG_STRUCT, ARCH_PRODUCT_FLAG_STRUCT, ARCH_DIAGNOSTIC_FLAG_STRUCT, ARCH_EXPERIMENTAL_FLAG_STRUCT, ARCH_NOTPRODUCT_FLAG_STRUCT) 453 FLAGTABLE_EXT 454 {0, NULL, NULL} 455 }; 456 457 Flag* Flag::flags = flagTable; 458 size_t Flag::numFlags = (sizeof(flagTable) / sizeof(Flag)); 459 460 inline bool str_equal(const char* s, const char* q, size_t len) { 461 // s is null terminated, q is not! 462 if (strlen(s) != (unsigned int) len) return false; 463 return strncmp(s, q, len) == 0; 464 } 465 466 // Search the flag table for a named flag 467 Flag* Flag::find_flag(const char* name, size_t length, bool allow_locked) { 468 for (Flag* current = &flagTable[0]; current->_name != NULL; current++) { 469 if (str_equal(current->_name, name, length)) { 470 // Found a matching entry. 471 // Don't report notproduct and develop flags in product builds. 472 if (current->is_constant_in_binary()) { 473 return NULL; 474 } 475 // Report locked flags only if allowed. 476 if (!(current->is_unlocked() || current->is_unlocker())) { 477 if (!allow_locked) { 478 // disable use of locked flags, e.g. diagnostic, experimental, 479 // commercial... until they are explicitly unlocked 480 return NULL; 481 } 482 } 483 return current; 484 } 485 } 486 // Flag name is not in the flag table 487 return NULL; 488 } 489 490 // Compute string similarity based on Dice's coefficient 491 static float str_similar(const char* str1, const char* str2, size_t len2) { 492 int len1 = (int) strlen(str1); 493 int total = len1 + (int) len2; 494 495 int hit = 0; 496 497 for (int i = 0; i < len1 -1; ++i) { 498 for (int j = 0; j < (int) len2 -1; ++j) { 499 if ((str1[i] == str2[j]) && (str1[i+1] == str2[j+1])) { 500 ++hit; 501 break; 502 } 503 } 504 } 505 506 return 2.0f * (float) hit / (float) total; 507 } 508 509 Flag* Flag::fuzzy_match(const char* name, size_t length, bool allow_locked) { 510 float VMOptionsFuzzyMatchSimilarity = 0.7f; 511 Flag* match = NULL; 512 float score; 513 float max_score = -1; 514 515 for (Flag* current = &flagTable[0]; current->_name != NULL; current++) { 516 score = str_similar(current->_name, name, length); 517 if (score > max_score) { 518 max_score = score; 519 match = current; 520 } 521 } 522 523 if (!(match->is_unlocked() || match->is_unlocker())) { 524 if (!allow_locked) { 525 return NULL; 526 } 527 } 528 529 if (max_score < VMOptionsFuzzyMatchSimilarity) { 530 return NULL; 531 } 532 533 return match; 534 } 535 536 // Returns the address of the index'th element 537 static Flag* address_of_flag(CommandLineFlagWithType flag) { 538 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); 539 return &Flag::flags[flag]; 540 } 541 542 bool CommandLineFlagsEx::is_default(CommandLineFlag flag) { 543 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); 544 Flag* f = &Flag::flags[flag]; 545 return f->is_default(); 546 } 547 548 bool CommandLineFlagsEx::is_ergo(CommandLineFlag flag) { 549 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); 550 Flag* f = &Flag::flags[flag]; 551 return f->is_ergonomic(); 552 } 553 554 bool CommandLineFlagsEx::is_cmdline(CommandLineFlag flag) { 555 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); 556 Flag* f = &Flag::flags[flag]; 557 return f->is_command_line(); 558 } 559 560 bool CommandLineFlags::wasSetOnCmdline(const char* name, bool* value) { 561 Flag* result = Flag::find_flag((char*)name, strlen(name)); 562 if (result == NULL) return false; 563 *value = result->is_command_line(); 564 return true; 565 } 566 567 bool CommandLineFlags::boolAt(char* name, size_t len, bool* value) { 568 Flag* result = Flag::find_flag(name, len); 569 if (result == NULL) return false; 570 if (!result->is_bool()) return false; 571 *value = result->get_bool(); 572 return true; 573 } 574 575 bool CommandLineFlags::boolAtPut(char* name, size_t len, bool* value, Flag::Flags origin) { 576 Flag* result = Flag::find_flag(name, len); 577 if (result == NULL) return false; 578 if (!result->is_bool()) return false; 579 bool old_value = result->get_bool(); 580 result->set_bool(*value); 581 *value = old_value; 582 result->set_origin(origin); 583 return true; 584 } 585 586 void CommandLineFlagsEx::boolAtPut(CommandLineFlagWithType flag, bool value, Flag::Flags origin) { 587 Flag* faddr = address_of_flag(flag); 588 guarantee(faddr != NULL && faddr->is_bool(), "wrong flag type"); 589 faddr->set_bool(value); 590 faddr->set_origin(origin); 591 } 592 593 bool CommandLineFlags::intxAt(char* name, size_t len, intx* value) { 594 Flag* result = Flag::find_flag(name, len); 595 if (result == NULL) return false; 596 if (!result->is_intx()) return false; 597 *value = result->get_intx(); 598 return true; 599 } 600 601 bool CommandLineFlags::intxAtPut(char* name, size_t len, intx* value, Flag::Flags origin) { 602 Flag* result = Flag::find_flag(name, len); 603 if (result == NULL) return false; 604 if (!result->is_intx()) return false; 605 intx old_value = result->get_intx(); 606 result->set_intx(*value); 607 *value = old_value; 608 result->set_origin(origin); 609 return true; 610 } 611 612 void CommandLineFlagsEx::intxAtPut(CommandLineFlagWithType flag, intx value, Flag::Flags origin) { 613 Flag* faddr = address_of_flag(flag); 614 guarantee(faddr != NULL && faddr->is_intx(), "wrong flag type"); 615 faddr->set_intx(value); 616 faddr->set_origin(origin); 617 } 618 619 bool CommandLineFlags::uintxAt(char* name, size_t len, uintx* value) { 620 Flag* result = Flag::find_flag(name, len); 621 if (result == NULL) return false; 622 if (!result->is_uintx()) return false; 623 *value = result->get_uintx(); 624 return true; 625 } 626 627 bool CommandLineFlags::uintxAtPut(char* name, size_t len, uintx* value, Flag::Flags origin) { 628 Flag* result = Flag::find_flag(name, len); 629 if (result == NULL) return false; 630 if (!result->is_uintx()) return false; 631 uintx old_value = result->get_uintx(); 632 result->set_uintx(*value); 633 *value = old_value; 634 result->set_origin(origin); 635 return true; 636 } 637 638 void CommandLineFlagsEx::uintxAtPut(CommandLineFlagWithType flag, uintx value, Flag::Flags origin) { 639 Flag* faddr = address_of_flag(flag); 640 guarantee(faddr != NULL && faddr->is_uintx(), "wrong flag type"); 641 faddr->set_uintx(value); 642 faddr->set_origin(origin); 643 } 644 645 bool CommandLineFlags::uint64_tAt(char* name, size_t len, uint64_t* value) { 646 Flag* result = Flag::find_flag(name, len); 647 if (result == NULL) return false; 648 if (!result->is_uint64_t()) return false; 649 *value = result->get_uint64_t(); 650 return true; 651 } 652 653 bool CommandLineFlags::uint64_tAtPut(char* name, size_t len, uint64_t* value, Flag::Flags origin) { 654 Flag* result = Flag::find_flag(name, len); 655 if (result == NULL) return false; 656 if (!result->is_uint64_t()) return false; 657 uint64_t old_value = result->get_uint64_t(); 658 result->set_uint64_t(*value); 659 *value = old_value; 660 result->set_origin(origin); 661 return true; 662 } 663 664 void CommandLineFlagsEx::uint64_tAtPut(CommandLineFlagWithType flag, uint64_t value, Flag::Flags origin) { 665 Flag* faddr = address_of_flag(flag); 666 guarantee(faddr != NULL && faddr->is_uint64_t(), "wrong flag type"); 667 faddr->set_uint64_t(value); 668 faddr->set_origin(origin); 669 } 670 671 bool CommandLineFlags::doubleAt(char* name, size_t len, double* value) { 672 Flag* result = Flag::find_flag(name, len); 673 if (result == NULL) return false; 674 if (!result->is_double()) return false; 675 *value = result->get_double(); 676 return true; 677 } 678 679 bool CommandLineFlags::doubleAtPut(char* name, size_t len, double* value, Flag::Flags origin) { 680 Flag* result = Flag::find_flag(name, len); 681 if (result == NULL) return false; 682 if (!result->is_double()) return false; 683 double old_value = result->get_double(); 684 result->set_double(*value); 685 *value = old_value; 686 result->set_origin(origin); 687 return true; 688 } 689 690 void CommandLineFlagsEx::doubleAtPut(CommandLineFlagWithType flag, double value, Flag::Flags origin) { 691 Flag* faddr = address_of_flag(flag); 692 guarantee(faddr != NULL && faddr->is_double(), "wrong flag type"); 693 faddr->set_double(value); 694 faddr->set_origin(origin); 695 } 696 697 bool CommandLineFlags::ccstrAt(char* name, size_t len, ccstr* value) { 698 Flag* result = Flag::find_flag(name, len); 699 if (result == NULL) return false; 700 if (!result->is_ccstr()) return false; 701 *value = result->get_ccstr(); 702 return true; 703 } 704 705 // Contract: Flag will make private copy of the incoming value. 706 // Outgoing value is always malloc-ed, and caller MUST call free. 707 bool CommandLineFlags::ccstrAtPut(char* name, size_t len, ccstr* value, Flag::Flags origin) { 708 Flag* result = Flag::find_flag(name, len); 709 if (result == NULL) return false; 710 if (!result->is_ccstr()) return false; 711 ccstr old_value = result->get_ccstr(); 712 char* new_value = NULL; 713 if (*value != NULL) { 714 new_value = NEW_C_HEAP_ARRAY(char, strlen(*value)+1, mtInternal); 715 strcpy(new_value, *value); 716 } 717 result->set_ccstr(new_value); 718 if (result->is_default() && old_value != NULL) { 719 // Prior value is NOT heap allocated, but was a literal constant. 720 char* old_value_to_free = NEW_C_HEAP_ARRAY(char, strlen(old_value)+1, mtInternal); 721 strcpy(old_value_to_free, old_value); 722 old_value = old_value_to_free; 723 } 724 *value = old_value; 725 result->set_origin(origin); 726 return true; 727 } 728 729 // Contract: Flag will make private copy of the incoming value. 730 void CommandLineFlagsEx::ccstrAtPut(CommandLineFlagWithType flag, ccstr value, Flag::Flags origin) { 731 Flag* faddr = address_of_flag(flag); 732 guarantee(faddr != NULL && faddr->is_ccstr(), "wrong flag type"); 733 ccstr old_value = faddr->get_ccstr(); 734 char* new_value = NEW_C_HEAP_ARRAY(char, strlen(value)+1, mtInternal); 735 strcpy(new_value, value); 736 faddr->set_ccstr(new_value); 737 if (!faddr->is_default() && old_value != NULL) { 738 // Prior value is heap allocated so free it. 739 FREE_C_HEAP_ARRAY(char, old_value, mtInternal); 740 } 741 faddr->set_origin(origin); 742 } 743 744 extern "C" { 745 static int compare_flags(const void* void_a, const void* void_b) { 746 return strcmp((*((Flag**) void_a))->_name, (*((Flag**) void_b))->_name); 747 } 748 } 749 750 void CommandLineFlags::printSetFlags(outputStream* out) { 751 // Print which flags were set on the command line 752 // note: this method is called before the thread structure is in place 753 // which means resource allocation cannot be used. 754 755 // The last entry is the null entry. 756 const size_t length = Flag::numFlags - 1; 757 758 // Sort 759 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length, mtInternal); 760 for (size_t i = 0; i < length; i++) { 761 array[i] = &flagTable[i]; 762 } 763 qsort(array, length, sizeof(Flag*), compare_flags); 764 765 // Print 766 for (size_t i = 0; i < length; i++) { 767 if (array[i]->get_origin() /* naked field! */) { 768 array[i]->print_as_flag(out); 769 out->print(" "); 770 } 771 } 772 out->cr(); 773 FREE_C_HEAP_ARRAY(Flag*, array, mtInternal); 774 } 775 776 #ifndef PRODUCT 777 778 779 void CommandLineFlags::verify() { 780 assert(Arguments::check_vm_args_consistency(), "Some flag settings conflict"); 781 } 782 783 #endif // PRODUCT 784 785 void CommandLineFlags::printFlags(outputStream* out, bool withComments) { 786 // Print the flags sorted by name 787 // note: this method is called before the thread structure is in place 788 // which means resource allocation cannot be used. 789 790 // The last entry is the null entry. 791 const size_t length = Flag::numFlags - 1; 792 793 // Sort 794 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length, mtInternal); 795 for (size_t i = 0; i < length; i++) { 796 array[i] = &flagTable[i]; 797 } 798 qsort(array, length, sizeof(Flag*), compare_flags); 799 800 // Print 801 out->print_cr("[Global flags]"); 802 for (size_t i = 0; i < length; i++) { 803 if (array[i]->is_unlocked()) { 804 array[i]->print_on(out, withComments); 805 } 806 } 807 FREE_C_HEAP_ARRAY(Flag*, array, mtInternal); 808 }