1 /* 2 * Copyright (c) 1997, 2015, 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 "runtime/commandLineFlagConstraintList.hpp" 32 #include "runtime/commandLineFlagRangeList.hpp" 33 #include "runtime/os.hpp" 34 #include "runtime/sharedRuntime.hpp" 35 #include "trace/tracing.hpp" 36 #include "utilities/macros.hpp" 37 #include "utilities/ostream.hpp" 38 #include "utilities/top.hpp" 39 #if INCLUDE_ALL_GCS 40 #include "gc/g1/g1_globals.hpp" 41 #endif // INCLUDE_ALL_GCS 42 #ifdef COMPILER1 43 #include "c1/c1_globals.hpp" 44 #endif 45 #ifdef COMPILER2 46 #include "opto/c2_globals.hpp" 47 #endif 48 #ifdef SHARK 49 #include "shark/shark_globals.hpp" 50 #endif 51 52 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC 53 54 RUNTIME_FLAGS(MATERIALIZE_DEVELOPER_FLAG, \ 55 MATERIALIZE_PD_DEVELOPER_FLAG, \ 56 MATERIALIZE_PRODUCT_FLAG, \ 57 MATERIALIZE_PD_PRODUCT_FLAG, \ 58 MATERIALIZE_DIAGNOSTIC_FLAG, \ 59 MATERIALIZE_EXPERIMENTAL_FLAG, \ 60 MATERIALIZE_NOTPRODUCT_FLAG, \ 61 MATERIALIZE_MANAGEABLE_FLAG, \ 62 MATERIALIZE_PRODUCT_RW_FLAG, \ 63 MATERIALIZE_LP64_PRODUCT_FLAG, \ 64 IGNORE_RANGE, \ 65 IGNORE_CONSTRAINT) 66 67 RUNTIME_OS_FLAGS(MATERIALIZE_DEVELOPER_FLAG, \ 68 MATERIALIZE_PD_DEVELOPER_FLAG, \ 69 MATERIALIZE_PRODUCT_FLAG, \ 70 MATERIALIZE_PD_PRODUCT_FLAG, \ 71 MATERIALIZE_DIAGNOSTIC_FLAG, \ 72 MATERIALIZE_NOTPRODUCT_FLAG, \ 73 IGNORE_RANGE, \ 74 IGNORE_CONSTRAINT) 75 76 ARCH_FLAGS(MATERIALIZE_DEVELOPER_FLAG, \ 77 MATERIALIZE_PRODUCT_FLAG, \ 78 MATERIALIZE_DIAGNOSTIC_FLAG, \ 79 MATERIALIZE_EXPERIMENTAL_FLAG, \ 80 MATERIALIZE_NOTPRODUCT_FLAG, \ 81 IGNORE_RANGE, \ 82 IGNORE_CONSTRAINT) 83 84 MATERIALIZE_FLAGS_EXT 85 86 static bool is_product_build() { 87 #ifdef PRODUCT 88 return true; 89 #else 90 return false; 91 #endif 92 } 93 94 void Flag::check_writable() { 95 if (is_constant_in_binary()) { 96 fatal(err_msg("flag is constant: %s", _name)); 97 } 98 } 99 100 bool Flag::is_bool() const { 101 return strcmp(_type, "bool") == 0; 102 } 103 104 bool Flag::get_bool() const { 105 return *((bool*) _addr); 106 } 107 108 void Flag::set_bool(bool value) { 109 check_writable(); 110 *((bool*) _addr) = value; 111 } 112 113 bool Flag::is_int() const { 114 return strcmp(_type, "int") == 0; 115 } 116 117 int Flag::get_int() const { 118 return *((int*) _addr); 119 } 120 121 void Flag::set_int(int value) { 122 check_writable(); 123 *((int*) _addr) = value; 124 } 125 126 bool Flag::is_uint() const { 127 return strcmp(_type, "uint") == 0; 128 } 129 130 uint Flag::get_uint() const { 131 return *((uint*) _addr); 132 } 133 134 void Flag::set_uint(uint value) { 135 check_writable(); 136 *((uint*) _addr) = value; 137 } 138 139 bool Flag::is_intx() const { 140 return strcmp(_type, "intx") == 0; 141 } 142 143 intx Flag::get_intx() const { 144 return *((intx*) _addr); 145 } 146 147 void Flag::set_intx(intx value) { 148 check_writable(); 149 *((intx*) _addr) = value; 150 } 151 152 bool Flag::is_uintx() const { 153 return strcmp(_type, "uintx") == 0; 154 } 155 156 uintx Flag::get_uintx() const { 157 return *((uintx*) _addr); 158 } 159 160 void Flag::set_uintx(uintx value) { 161 check_writable(); 162 *((uintx*) _addr) = value; 163 } 164 165 bool Flag::is_uint64_t() const { 166 return strcmp(_type, "uint64_t") == 0; 167 } 168 169 uint64_t Flag::get_uint64_t() const { 170 return *((uint64_t*) _addr); 171 } 172 173 void Flag::set_uint64_t(uint64_t value) { 174 check_writable(); 175 *((uint64_t*) _addr) = value; 176 } 177 178 bool Flag::is_size_t() const { 179 return strcmp(_type, "size_t") == 0; 180 } 181 182 size_t Flag::get_size_t() const { 183 return *((size_t*) _addr); 184 } 185 186 void Flag::set_size_t(size_t value) { 187 check_writable(); 188 *((size_t*) _addr) = value; 189 } 190 191 bool Flag::is_double() const { 192 return strcmp(_type, "double") == 0; 193 } 194 195 double Flag::get_double() const { 196 return *((double*) _addr); 197 } 198 199 void Flag::set_double(double value) { 200 check_writable(); 201 *((double*) _addr) = value; 202 } 203 204 bool Flag::is_ccstr() const { 205 return strcmp(_type, "ccstr") == 0 || strcmp(_type, "ccstrlist") == 0; 206 } 207 208 bool Flag::ccstr_accumulates() const { 209 return strcmp(_type, "ccstrlist") == 0; 210 } 211 212 ccstr Flag::get_ccstr() const { 213 return *((ccstr*) _addr); 214 } 215 216 void Flag::set_ccstr(ccstr value) { 217 check_writable(); 218 *((ccstr*) _addr) = value; 219 } 220 221 222 Flag::Flags Flag::get_origin() { 223 return Flags(_flags & VALUE_ORIGIN_MASK); 224 } 225 226 void Flag::set_origin(Flags origin) { 227 assert((origin & VALUE_ORIGIN_MASK) == origin, "sanity"); 228 _flags = Flags((_flags & ~VALUE_ORIGIN_MASK) | origin); 229 } 230 231 bool Flag::is_default() { 232 return (get_origin() == DEFAULT); 233 } 234 235 bool Flag::is_ergonomic() { 236 return (get_origin() == ERGONOMIC); 237 } 238 239 bool Flag::is_command_line() { 240 return (get_origin() == COMMAND_LINE); 241 } 242 243 bool Flag::is_product() const { 244 return (_flags & KIND_PRODUCT) != 0; 245 } 246 247 bool Flag::is_manageable() const { 248 return (_flags & KIND_MANAGEABLE) != 0; 249 } 250 251 bool Flag::is_diagnostic() const { 252 return (_flags & KIND_DIAGNOSTIC) != 0; 253 } 254 255 bool Flag::is_experimental() const { 256 return (_flags & KIND_EXPERIMENTAL) != 0; 257 } 258 259 bool Flag::is_notproduct() const { 260 return (_flags & KIND_NOT_PRODUCT) != 0; 261 } 262 263 bool Flag::is_develop() const { 264 return (_flags & KIND_DEVELOP) != 0; 265 } 266 267 bool Flag::is_read_write() const { 268 return (_flags & KIND_READ_WRITE) != 0; 269 } 270 271 bool Flag::is_commercial() const { 272 return (_flags & KIND_COMMERCIAL) != 0; 273 } 274 275 /** 276 * Returns if this flag is a constant in the binary. Right now this is 277 * true for notproduct and develop flags in product builds. 278 */ 279 bool Flag::is_constant_in_binary() const { 280 #ifdef PRODUCT 281 return is_notproduct() || is_develop(); 282 #else 283 return false; 284 #endif 285 } 286 287 bool Flag::is_unlocker() const { 288 return strcmp(_name, "UnlockDiagnosticVMOptions") == 0 || 289 strcmp(_name, "UnlockExperimentalVMOptions") == 0 || 290 is_unlocker_ext(); 291 } 292 293 bool Flag::is_unlocked() const { 294 if (is_diagnostic()) { 295 return UnlockDiagnosticVMOptions; 296 } 297 if (is_experimental()) { 298 return UnlockExperimentalVMOptions; 299 } 300 return is_unlocked_ext(); 301 } 302 303 void Flag::unlock_diagnostic() { 304 assert(is_diagnostic(), "sanity"); 305 _flags = Flags(_flags & ~KIND_DIAGNOSTIC); 306 } 307 308 // Get custom message for this locked flag, or return NULL if 309 // none is available. 310 void Flag::get_locked_message(char* buf, int buflen) const { 311 buf[0] = '\0'; 312 if (is_diagnostic() && !is_unlocked()) { 313 jio_snprintf(buf, buflen, "Error: VM option '%s' is diagnostic and must be enabled via -XX:+UnlockDiagnosticVMOptions.\n", 314 _name); 315 return; 316 } 317 if (is_experimental() && !is_unlocked()) { 318 jio_snprintf(buf, buflen, "Error: VM option '%s' is experimental and must be enabled via -XX:+UnlockExperimentalVMOptions.\n", 319 _name); 320 return; 321 } 322 if (is_develop() && is_product_build()) { 323 jio_snprintf(buf, buflen, "Error: VM option '%s' is develop and is available only in debug version of VM.\n", 324 _name); 325 return; 326 } 327 if (is_notproduct() && is_product_build()) { 328 jio_snprintf(buf, buflen, "Error: VM option '%s' is notproduct and is available only in debug version of VM.\n", 329 _name); 330 return; 331 } 332 get_locked_message_ext(buf, buflen); 333 } 334 335 bool Flag::is_writeable() const { 336 return is_manageable() || (is_product() && is_read_write()) || is_writeable_ext(); 337 } 338 339 // All flags except "manageable" are assumed to be internal flags. 340 // Long term, we need to define a mechanism to specify which flags 341 // are external/stable and change this function accordingly. 342 bool Flag::is_external() const { 343 return is_manageable() || is_external_ext(); 344 } 345 346 347 // Length of format string (e.g. "%.1234s") for printing ccstr below 348 #define FORMAT_BUFFER_LEN 16 349 350 PRAGMA_FORMAT_NONLITERAL_IGNORED_EXTERNAL 351 void Flag::print_on(outputStream* st, bool withComments, bool printRanges) { 352 // Don't print notproduct and develop flags in a product build. 353 if (is_constant_in_binary()) { 354 return; 355 } 356 357 if (!printRanges) { 358 359 st->print("%9s %-40s %c= ", _type, _name, (!is_default() ? ':' : ' ')); 360 361 if (is_bool()) { 362 st->print("%-16s", get_bool() ? "true" : "false"); 363 } else if (is_int()) { 364 st->print("%-16d", get_int()); 365 } else if (is_uint()) { 366 st->print("%-16u", get_uint()); 367 } else if (is_intx()) { 368 st->print("%-16ld", get_intx()); 369 } else if (is_uintx()) { 370 st->print("%-16lu", get_uintx()); 371 } else if (is_uint64_t()) { 372 st->print("%-16lu", get_uint64_t()); 373 } else if (is_size_t()) { 374 st->print(SIZE_FORMAT_W(-16), get_size_t()); 375 } else if (is_double()) { 376 st->print("%-16f", get_double()); 377 } else if (is_ccstr()) { 378 const char* cp = get_ccstr(); 379 if (cp != NULL) { 380 const char* eol; 381 while ((eol = strchr(cp, '\n')) != NULL) { 382 char format_buffer[FORMAT_BUFFER_LEN]; 383 size_t llen = pointer_delta(eol, cp, sizeof(char)); 384 jio_snprintf(format_buffer, FORMAT_BUFFER_LEN, 385 "%%." SIZE_FORMAT "s", llen); 386 PRAGMA_DIAG_PUSH 387 PRAGMA_FORMAT_NONLITERAL_IGNORED_INTERNAL 388 st->print(format_buffer, cp); 389 PRAGMA_DIAG_POP 390 st->cr(); 391 cp = eol+1; 392 st->print("%5s %-35s += ", "", _name); 393 } 394 st->print("%-16s", cp); 395 } 396 else st->print("%-16s", ""); 397 } 398 399 st->print("%-20s", " "); 400 print_kind(st); 401 402 #ifndef PRODUCT 403 if (withComments) { 404 st->print("%s", _doc); 405 } 406 #endif 407 408 st->cr(); 409 410 } else if (!is_bool() && !is_ccstr()) { 411 412 if (printRanges) { 413 414 st->print("%9s %-50s ", _type, _name); 415 416 CommandLineFlagRangeList::print(_name, st, true); 417 418 st->print(" %-20s", " "); 419 print_kind(st); 420 421 #ifndef PRODUCT 422 if (withComments) { 423 st->print("%s", _doc); 424 } 425 #endif 426 427 st->cr(); 428 429 } 430 } 431 } 432 433 void Flag::print_kind(outputStream* st) { 434 struct Data { 435 int flag; 436 const char* name; 437 }; 438 439 Data data[] = { 440 { KIND_C1, "C1" }, 441 { KIND_C2, "C2" }, 442 { KIND_ARCH, "ARCH" }, 443 { KIND_SHARK, "SHARK" }, 444 { KIND_PLATFORM_DEPENDENT, "pd" }, 445 { KIND_PRODUCT, "product" }, 446 { KIND_MANAGEABLE, "manageable" }, 447 { KIND_DIAGNOSTIC, "diagnostic" }, 448 { KIND_EXPERIMENTAL, "experimental" }, 449 { KIND_COMMERCIAL, "commercial" }, 450 { KIND_NOT_PRODUCT, "notproduct" }, 451 { KIND_DEVELOP, "develop" }, 452 { KIND_LP64_PRODUCT, "lp64_product" }, 453 { KIND_READ_WRITE, "rw" }, 454 { -1, "" } 455 }; 456 457 if ((_flags & KIND_MASK) != 0) { 458 st->print("{"); 459 bool is_first = true; 460 461 for (int i = 0; data[i].flag != -1; i++) { 462 Data d = data[i]; 463 if ((_flags & d.flag) != 0) { 464 if (is_first) { 465 is_first = false; 466 } else { 467 st->print(" "); 468 } 469 st->print("%s", d.name); 470 } 471 } 472 473 st->print("}"); 474 } 475 } 476 477 void Flag::print_as_flag(outputStream* st) { 478 if (is_bool()) { 479 st->print("-XX:%s%s", get_bool() ? "+" : "-", _name); 480 } else if (is_int()) { 481 st->print("-XX:%s=%d", _name, get_int()); 482 } else if (is_uint()) { 483 st->print("-XX:%s=%u", _name, get_uint()); 484 } else if (is_intx()) { 485 st->print("-XX:%s=" INTX_FORMAT, _name, get_intx()); 486 } else if (is_uintx()) { 487 st->print("-XX:%s=" UINTX_FORMAT, _name, get_uintx()); 488 } else if (is_uint64_t()) { 489 st->print("-XX:%s=" UINT64_FORMAT, _name, get_uint64_t()); 490 } else if (is_size_t()) { 491 st->print("-XX:%s=" SIZE_FORMAT, _name, get_size_t()); 492 } else if (is_double()) { 493 st->print("-XX:%s=%f", _name, get_double()); 494 } else if (is_ccstr()) { 495 st->print("-XX:%s=", _name); 496 const char* cp = get_ccstr(); 497 if (cp != NULL) { 498 // Need to turn embedded '\n's back into separate arguments 499 // Not so efficient to print one character at a time, 500 // but the choice is to do the transformation to a buffer 501 // and print that. And this need not be efficient. 502 for (; *cp != '\0'; cp += 1) { 503 switch (*cp) { 504 default: 505 st->print("%c", *cp); 506 break; 507 case '\n': 508 st->print(" -XX:%s=", _name); 509 break; 510 } 511 } 512 } 513 } else { 514 ShouldNotReachHere(); 515 } 516 } 517 518 // 4991491 do not "optimize out" the was_set false values: omitting them 519 // tickles a Microsoft compiler bug causing flagTable to be malformed 520 521 #define NAME(name) NOT_PRODUCT(&name) PRODUCT_ONLY(&CONST_##name) 522 523 #define RUNTIME_PRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_PRODUCT) }, 524 #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) }, 525 #define RUNTIME_DIAGNOSTIC_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_DIAGNOSTIC) }, 526 #define RUNTIME_EXPERIMENTAL_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_EXPERIMENTAL) }, 527 #define RUNTIME_MANAGEABLE_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_MANAGEABLE) }, 528 #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) }, 529 #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) }, 530 #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) }, 531 #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) }, 532 533 #ifdef _LP64 534 #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) }, 535 #else 536 #define RUNTIME_LP64_PRODUCT_FLAG_STRUCT(type, name, value, doc) /* flag is constant */ 537 #endif // _LP64 538 539 #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) }, 540 #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) }, 541 #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) }, 542 #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) }, 543 #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) }, 544 #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) }, 545 546 #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) }, 547 #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) }, 548 #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) }, 549 #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) }, 550 #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) }, 551 #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) }, 552 #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) }, 553 554 #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) }, 555 #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) }, 556 #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) }, 557 #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) }, 558 #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) }, 559 560 #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) }, 561 #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) }, 562 #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) }, 563 #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) }, 564 #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) }, 565 #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) }, 566 567 static Flag flagTable[] = { 568 RUNTIME_FLAGS(RUNTIME_DEVELOP_FLAG_STRUCT, \ 569 RUNTIME_PD_DEVELOP_FLAG_STRUCT, \ 570 RUNTIME_PRODUCT_FLAG_STRUCT, \ 571 RUNTIME_PD_PRODUCT_FLAG_STRUCT, \ 572 RUNTIME_DIAGNOSTIC_FLAG_STRUCT, \ 573 RUNTIME_EXPERIMENTAL_FLAG_STRUCT, \ 574 RUNTIME_NOTPRODUCT_FLAG_STRUCT, \ 575 RUNTIME_MANAGEABLE_FLAG_STRUCT, \ 576 RUNTIME_PRODUCT_RW_FLAG_STRUCT, \ 577 RUNTIME_LP64_PRODUCT_FLAG_STRUCT, \ 578 IGNORE_RANGE, \ 579 IGNORE_CONSTRAINT) 580 RUNTIME_OS_FLAGS(RUNTIME_DEVELOP_FLAG_STRUCT, \ 581 RUNTIME_PD_DEVELOP_FLAG_STRUCT, \ 582 RUNTIME_PRODUCT_FLAG_STRUCT, \ 583 RUNTIME_PD_PRODUCT_FLAG_STRUCT, \ 584 RUNTIME_DIAGNOSTIC_FLAG_STRUCT, \ 585 RUNTIME_NOTPRODUCT_FLAG_STRUCT, \ 586 IGNORE_RANGE, \ 587 IGNORE_CONSTRAINT) 588 #if INCLUDE_ALL_GCS 589 G1_FLAGS(RUNTIME_DEVELOP_FLAG_STRUCT, \ 590 RUNTIME_PD_DEVELOP_FLAG_STRUCT, \ 591 RUNTIME_PRODUCT_FLAG_STRUCT, \ 592 RUNTIME_PD_PRODUCT_FLAG_STRUCT, \ 593 RUNTIME_DIAGNOSTIC_FLAG_STRUCT, \ 594 RUNTIME_EXPERIMENTAL_FLAG_STRUCT, \ 595 RUNTIME_NOTPRODUCT_FLAG_STRUCT, \ 596 RUNTIME_MANAGEABLE_FLAG_STRUCT, \ 597 RUNTIME_PRODUCT_RW_FLAG_STRUCT, \ 598 IGNORE_RANGE, \ 599 IGNORE_CONSTRAINT) 600 #endif // INCLUDE_ALL_GCS 601 #ifdef COMPILER1 602 C1_FLAGS(C1_DEVELOP_FLAG_STRUCT, \ 603 C1_PD_DEVELOP_FLAG_STRUCT, \ 604 C1_PRODUCT_FLAG_STRUCT, \ 605 C1_PD_PRODUCT_FLAG_STRUCT, \ 606 C1_DIAGNOSTIC_FLAG_STRUCT, \ 607 C1_NOTPRODUCT_FLAG_STRUCT, \ 608 IGNORE_RANGE, \ 609 IGNORE_CONSTRAINT) 610 #endif // COMPILER1 611 #ifdef COMPILER2 612 C2_FLAGS(C2_DEVELOP_FLAG_STRUCT, \ 613 C2_PD_DEVELOP_FLAG_STRUCT, \ 614 C2_PRODUCT_FLAG_STRUCT, \ 615 C2_PD_PRODUCT_FLAG_STRUCT, \ 616 C2_DIAGNOSTIC_FLAG_STRUCT, \ 617 C2_EXPERIMENTAL_FLAG_STRUCT, \ 618 C2_NOTPRODUCT_FLAG_STRUCT, \ 619 IGNORE_RANGE, \ 620 IGNORE_CONSTRAINT) 621 #endif // COMPILER2 622 #ifdef SHARK 623 SHARK_FLAGS(SHARK_DEVELOP_FLAG_STRUCT, \ 624 SHARK_PD_DEVELOP_FLAG_STRUCT, \ 625 SHARK_PRODUCT_FLAG_STRUCT, \ 626 SHARK_PD_PRODUCT_FLAG_STRUCT, \ 627 SHARK_DIAGNOSTIC_FLAG_STRUCT, \ 628 SHARK_NOTPRODUCT_FLAG_STRUCT) 629 #endif // SHARK 630 ARCH_FLAGS(ARCH_DEVELOP_FLAG_STRUCT, \ 631 ARCH_PRODUCT_FLAG_STRUCT, \ 632 ARCH_DIAGNOSTIC_FLAG_STRUCT, \ 633 ARCH_EXPERIMENTAL_FLAG_STRUCT, \ 634 ARCH_NOTPRODUCT_FLAG_STRUCT, \ 635 IGNORE_RANGE, \ 636 IGNORE_CONSTRAINT) 637 FLAGTABLE_EXT 638 {0, NULL, NULL} 639 }; 640 641 Flag* Flag::flags = flagTable; 642 size_t Flag::numFlags = (sizeof(flagTable) / sizeof(Flag)); 643 644 inline bool str_equal(const char* s, const char* q, size_t len) { 645 // s is null terminated, q is not! 646 if (strlen(s) != (unsigned int) len) return false; 647 return strncmp(s, q, len) == 0; 648 } 649 650 // Search the flag table for a named flag 651 Flag* Flag::find_flag(const char* name, size_t length, bool allow_locked, bool return_flag) { 652 for (Flag* current = &flagTable[0]; current->_name != NULL; current++) { 653 if (str_equal(current->_name, name, length)) { 654 // Found a matching entry. 655 // Don't report notproduct and develop flags in product builds. 656 if (current->is_constant_in_binary()) { 657 return (return_flag ? current : NULL); 658 } 659 // Report locked flags only if allowed. 660 if (!(current->is_unlocked() || current->is_unlocker())) { 661 if (!allow_locked) { 662 // disable use of locked flags, e.g. diagnostic, experimental, 663 // commercial... until they are explicitly unlocked 664 return NULL; 665 } 666 } 667 return current; 668 } 669 } 670 // Flag name is not in the flag table 671 return NULL; 672 } 673 674 // Compute string similarity based on Dice's coefficient 675 static float str_similar(const char* str1, const char* str2, size_t len2) { 676 int len1 = (int) strlen(str1); 677 int total = len1 + (int) len2; 678 679 int hit = 0; 680 681 for (int i = 0; i < len1 -1; ++i) { 682 for (int j = 0; j < (int) len2 -1; ++j) { 683 if ((str1[i] == str2[j]) && (str1[i+1] == str2[j+1])) { 684 ++hit; 685 break; 686 } 687 } 688 } 689 690 return 2.0f * (float) hit / (float) total; 691 } 692 693 Flag* Flag::fuzzy_match(const char* name, size_t length, bool allow_locked) { 694 float VMOptionsFuzzyMatchSimilarity = 0.7f; 695 Flag* match = NULL; 696 float score; 697 float max_score = -1; 698 699 for (Flag* current = &flagTable[0]; current->_name != NULL; current++) { 700 score = str_similar(current->_name, name, length); 701 if (score > max_score) { 702 max_score = score; 703 match = current; 704 } 705 } 706 707 if (!(match->is_unlocked() || match->is_unlocker())) { 708 if (!allow_locked) { 709 return NULL; 710 } 711 } 712 713 if (max_score < VMOptionsFuzzyMatchSimilarity) { 714 return NULL; 715 } 716 717 return match; 718 } 719 720 // Returns the address of the index'th element 721 static Flag* address_of_flag(CommandLineFlagWithType flag) { 722 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); 723 return &Flag::flags[flag]; 724 } 725 726 const char* Flag::flag_error_str(Flag::Error error) { 727 switch (error) { 728 case Flag::MISSING_NAME: return "MISSING_NAME"; 729 case Flag::MISSING_VALUE: return "MISSING_VALUE"; 730 case Flag::NON_WRITABLE: return "NON_WRITABLE"; 731 case Flag::OUT_OF_BOUNDS: return "OUT_OF_BOUNDS"; 732 case Flag::VIOLATES_CONSTRAINT: return "VIOLATES_CONSTRAINT"; 733 case Flag::INVALID_FLAG: return "INVALID_FLAG"; 734 case Flag::ERR_OTHER: return "ERR_OTHER"; 735 case Flag::SUCCESS: return "SUCCESS"; 736 default: return "NULL"; 737 } 738 } 739 740 bool CommandLineFlagsEx::is_default(CommandLineFlag flag) { 741 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); 742 Flag* f = &Flag::flags[flag]; 743 return f->is_default(); 744 } 745 746 bool CommandLineFlagsEx::is_ergo(CommandLineFlag flag) { 747 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); 748 Flag* f = &Flag::flags[flag]; 749 return f->is_ergonomic(); 750 } 751 752 bool CommandLineFlagsEx::is_cmdline(CommandLineFlag flag) { 753 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); 754 Flag* f = &Flag::flags[flag]; 755 return f->is_command_line(); 756 } 757 758 bool CommandLineFlags::wasSetOnCmdline(const char* name, bool* value) { 759 Flag* result = Flag::find_flag((char*)name, strlen(name)); 760 if (result == NULL) return false; 761 *value = result->is_command_line(); 762 return true; 763 } 764 765 template<class E, class T> 766 static void trace_flag_changed(const char* name, const T old_value, const T new_value, const Flag::Flags origin) { 767 E e; 768 e.set_name(name); 769 e.set_old_value(old_value); 770 e.set_new_value(new_value); 771 e.set_origin(origin); 772 e.commit(); 773 } 774 775 static Flag::Error apply_constraint_and_check_range_bool(const char* name, bool* new_value, bool verbose = true) { 776 Flag::Error status = Flag::SUCCESS; 777 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find(name); 778 if (constraint != NULL) { 779 status = constraint->apply_bool(new_value, verbose); 780 } 781 return status; 782 } 783 784 Flag::Error CommandLineFlags::boolAt(const char* name, size_t len, bool* value, bool allow_locked, bool return_flag) { 785 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag); 786 if (result == NULL) return Flag::INVALID_FLAG; 787 if (!result->is_bool()) return Flag::WRONG_FORMAT; 788 *value = result->get_bool(); 789 return Flag::SUCCESS; 790 } 791 792 Flag::Error CommandLineFlags::boolAtPut(const char* name, size_t len, bool* value, Flag::Flags origin) { 793 Flag* result = Flag::find_flag(name, len); 794 if (result == NULL) return Flag::INVALID_FLAG; 795 if (!result->is_bool()) return Flag::WRONG_FORMAT; 796 Flag::Error check = apply_constraint_and_check_range_bool(name, value, !CommandLineFlags::finishedInitializing()); 797 if (check != Flag::SUCCESS) return check; 798 bool old_value = result->get_bool(); 799 trace_flag_changed<EventBooleanFlagChanged, bool>(name, old_value, *value, origin); 800 result->set_bool(*value); 801 *value = old_value; 802 result->set_origin(origin); 803 return Flag::SUCCESS; 804 } 805 806 Flag::Error CommandLineFlagsEx::boolAtPut(CommandLineFlagWithType flag, bool value, Flag::Flags origin) { 807 Flag* faddr = address_of_flag(flag); 808 guarantee(faddr != NULL && faddr->is_bool(), "wrong flag type"); 809 Flag::Error check = apply_constraint_and_check_range_bool(faddr->_name, &value); 810 if (check != Flag::SUCCESS) return check; 811 trace_flag_changed<EventBooleanFlagChanged, bool>(faddr->_name, faddr->get_bool(), value, origin); 812 faddr->set_bool(value); 813 faddr->set_origin(origin); 814 return Flag::SUCCESS; 815 } 816 817 static Flag::Error apply_constraint_and_check_range_int(const char* name, int* new_value, bool verbose = true) { 818 Flag::Error status = Flag::SUCCESS; 819 CommandLineFlagRange* range = CommandLineFlagRangeList::find(name); 820 if (range != NULL) { 821 status = range->check_int(*new_value, verbose); 822 } 823 if (status == Flag::SUCCESS) { 824 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find(name); 825 if (constraint != NULL) { 826 status = constraint->apply_int(new_value, verbose); 827 } 828 } 829 return status; 830 } 831 832 Flag::Error CommandLineFlags::intAt(const char* name, size_t len, int* value, bool allow_locked, bool return_flag) { 833 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag); 834 if (result == NULL) return Flag::INVALID_FLAG; 835 if (!result->is_int()) return Flag::WRONG_FORMAT; 836 *value = result->get_int(); 837 return Flag::SUCCESS; 838 } 839 840 Flag::Error CommandLineFlags::intAtPut(const char* name, size_t len, int* value, Flag::Flags origin) { 841 Flag* result = Flag::find_flag(name, len); 842 if (result == NULL) return Flag::INVALID_FLAG; 843 if (!result->is_int()) return Flag::WRONG_FORMAT; 844 Flag::Error check = apply_constraint_and_check_range_int(name, value, !CommandLineFlags::finishedInitializing()); 845 if (check != Flag::SUCCESS) return check; 846 int old_value = result->get_int(); 847 trace_flag_changed<EventIntFlagChanged, s4>(name, old_value, *value, origin); 848 result->set_int(*value); 849 *value = old_value; 850 result->set_origin(origin); 851 return Flag::SUCCESS; 852 } 853 854 Flag::Error CommandLineFlagsEx::intAtPut(CommandLineFlagWithType flag, int value, Flag::Flags origin) { 855 Flag* faddr = address_of_flag(flag); 856 guarantee(faddr != NULL && faddr->is_int(), "wrong flag type"); 857 trace_flag_changed<EventIntFlagChanged, s4>(faddr->_name, faddr->get_int(), value, origin); 858 faddr->set_int(value); 859 faddr->set_origin(origin); 860 return Flag::SUCCESS; 861 } 862 863 static Flag::Error apply_constraint_and_check_range_uint(const char* name, uint* new_value, bool verbose = true) { 864 Flag::Error status = Flag::SUCCESS; 865 CommandLineFlagRange* range = CommandLineFlagRangeList::find(name); 866 if (range != NULL) { 867 status = range->check_uint(*new_value, verbose); 868 } 869 if (status == Flag::SUCCESS) { 870 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find(name); 871 if (constraint != NULL) { 872 status = constraint->apply_uint(new_value, verbose); 873 } 874 } 875 return status; 876 } 877 878 Flag::Error CommandLineFlags::uintAt(const char* name, size_t len, uint* value, bool allow_locked, bool return_flag) { 879 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag); 880 if (result == NULL) return Flag::INVALID_FLAG; 881 if (!result->is_uint()) return Flag::WRONG_FORMAT; 882 *value = result->get_uint(); 883 return Flag::SUCCESS; 884 } 885 886 Flag::Error CommandLineFlags::uintAtPut(const char* name, size_t len, uint* value, Flag::Flags origin) { 887 Flag* result = Flag::find_flag(name, len); 888 if (result == NULL) return Flag::INVALID_FLAG; 889 if (!result->is_uint()) return Flag::WRONG_FORMAT; 890 Flag::Error check = apply_constraint_and_check_range_uint(name, value, !CommandLineFlags::finishedInitializing()); 891 if (check != Flag::SUCCESS) return check; 892 uint old_value = result->get_uint(); 893 trace_flag_changed<EventUnsignedIntFlagChanged, u4>(name, old_value, *value, origin); 894 result->set_uint(*value); 895 *value = old_value; 896 result->set_origin(origin); 897 return Flag::SUCCESS; 898 } 899 900 Flag::Error CommandLineFlagsEx::uintAtPut(CommandLineFlagWithType flag, uint value, Flag::Flags origin) { 901 Flag* faddr = address_of_flag(flag); 902 guarantee(faddr != NULL && faddr->is_uint(), "wrong flag type"); 903 trace_flag_changed<EventUnsignedIntFlagChanged, u4>(faddr->_name, faddr->get_uint(), value, origin); 904 faddr->set_uint(value); 905 faddr->set_origin(origin); 906 return Flag::SUCCESS; 907 } 908 909 Flag::Error CommandLineFlags::intxAt(const char* name, size_t len, intx* value, bool allow_locked, bool return_flag) { 910 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag); 911 if (result == NULL) return Flag::INVALID_FLAG; 912 if (!result->is_intx()) return Flag::WRONG_FORMAT; 913 *value = result->get_intx(); 914 return Flag::SUCCESS; 915 } 916 917 static Flag::Error apply_constraint_and_check_range_intx(const char* name, intx* new_value, bool verbose = true) { 918 Flag::Error status = Flag::SUCCESS; 919 CommandLineFlagRange* range = CommandLineFlagRangeList::find(name); 920 if (range != NULL) { 921 status = range->check_intx(*new_value, verbose); 922 } 923 if (status == Flag::SUCCESS) { 924 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find(name); 925 if (constraint != NULL) { 926 status = constraint->apply_intx(new_value, verbose); 927 } 928 } 929 return status; 930 } 931 932 Flag::Error CommandLineFlags::intxAtPut(const char* name, size_t len, intx* value, Flag::Flags origin) { 933 Flag* result = Flag::find_flag(name, len); 934 if (result == NULL) return Flag::INVALID_FLAG; 935 if (!result->is_intx()) return Flag::WRONG_FORMAT; 936 Flag::Error check = apply_constraint_and_check_range_intx(name, value, !CommandLineFlags::finishedInitializing()); 937 if (check != Flag::SUCCESS) return check; 938 intx old_value = result->get_intx(); 939 trace_flag_changed<EventLongFlagChanged, intx>(name, old_value, *value, origin); 940 result->set_intx(*value); 941 *value = old_value; 942 result->set_origin(origin); 943 return Flag::SUCCESS; 944 } 945 946 Flag::Error CommandLineFlagsEx::intxAtPut(CommandLineFlagWithType flag, intx value, Flag::Flags origin) { 947 Flag* faddr = address_of_flag(flag); 948 guarantee(faddr != NULL && faddr->is_intx(), "wrong flag type"); 949 Flag::Error check = apply_constraint_and_check_range_intx(faddr->_name, &value); 950 if (check != Flag::SUCCESS) return check; 951 trace_flag_changed<EventLongFlagChanged, intx>(faddr->_name, faddr->get_intx(), value, origin); 952 faddr->set_intx(value); 953 faddr->set_origin(origin); 954 return Flag::SUCCESS; 955 } 956 957 Flag::Error CommandLineFlags::uintxAt(const char* name, size_t len, uintx* value, bool allow_locked, bool return_flag) { 958 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag); 959 if (result == NULL) return Flag::INVALID_FLAG; 960 if (!result->is_uintx()) return Flag::WRONG_FORMAT; 961 *value = result->get_uintx(); 962 return Flag::SUCCESS; 963 } 964 965 static Flag::Error apply_constraint_and_check_range_uintx(const char* name, uintx* new_value, bool verbose = true) { 966 Flag::Error status = Flag::SUCCESS; 967 CommandLineFlagRange* range = CommandLineFlagRangeList::find(name); 968 if (range != NULL) { 969 status = range->check_uintx(*new_value, verbose); 970 } 971 if (status == Flag::SUCCESS) { 972 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find(name); 973 if (constraint != NULL) { 974 status = constraint->apply_uintx(new_value, verbose); 975 } 976 } 977 return status; 978 } 979 980 Flag::Error CommandLineFlags::uintxAtPut(const char* name, size_t len, uintx* value, Flag::Flags origin) { 981 Flag* result = Flag::find_flag(name, len); 982 if (result == NULL) return Flag::INVALID_FLAG; 983 if (!result->is_uintx()) return Flag::WRONG_FORMAT; 984 Flag::Error check = apply_constraint_and_check_range_uintx(name, value, !CommandLineFlags::finishedInitializing()); 985 if (check != Flag::SUCCESS) return check; 986 uintx old_value = result->get_uintx(); 987 trace_flag_changed<EventUnsignedLongFlagChanged, u8>(name, old_value, *value, origin); 988 result->set_uintx(*value); 989 *value = old_value; 990 result->set_origin(origin); 991 return Flag::SUCCESS; 992 } 993 994 Flag::Error CommandLineFlagsEx::uintxAtPut(CommandLineFlagWithType flag, uintx value, Flag::Flags origin) { 995 Flag* faddr = address_of_flag(flag); 996 guarantee(faddr != NULL && faddr->is_uintx(), "wrong flag type"); 997 Flag::Error check = apply_constraint_and_check_range_uintx(faddr->_name, &value); 998 if (check != Flag::SUCCESS) return check; 999 trace_flag_changed<EventUnsignedLongFlagChanged, u8>(faddr->_name, faddr->get_uintx(), value, origin); 1000 faddr->set_uintx(value); 1001 faddr->set_origin(origin); 1002 return Flag::SUCCESS; 1003 } 1004 1005 Flag::Error CommandLineFlags::uint64_tAt(const char* name, size_t len, uint64_t* value, bool allow_locked, bool return_flag) { 1006 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag); 1007 if (result == NULL) return Flag::INVALID_FLAG; 1008 if (!result->is_uint64_t()) return Flag::WRONG_FORMAT; 1009 *value = result->get_uint64_t(); 1010 return Flag::SUCCESS; 1011 } 1012 1013 static Flag::Error apply_constraint_and_check_range_uint64_t(const char* name, uint64_t* new_value, bool verbose = true) { 1014 Flag::Error status = Flag::SUCCESS; 1015 CommandLineFlagRange* range = CommandLineFlagRangeList::find(name); 1016 if (range != NULL) { 1017 status = range->check_uint64_t(*new_value, verbose); 1018 } 1019 if (status == Flag::SUCCESS) { 1020 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find(name); 1021 if (constraint != NULL) { 1022 status = constraint->apply_uint64_t(new_value, verbose); 1023 } 1024 } 1025 return status; 1026 } 1027 1028 Flag::Error CommandLineFlags::uint64_tAtPut(const char* name, size_t len, uint64_t* value, Flag::Flags origin) { 1029 Flag* result = Flag::find_flag(name, len); 1030 if (result == NULL) return Flag::INVALID_FLAG; 1031 if (!result->is_uint64_t()) return Flag::WRONG_FORMAT; 1032 Flag::Error check = apply_constraint_and_check_range_uint64_t(name, value, !CommandLineFlags::finishedInitializing()); 1033 if (check != Flag::SUCCESS) return check; 1034 uint64_t old_value = result->get_uint64_t(); 1035 trace_flag_changed<EventUnsignedLongFlagChanged, u8>(name, old_value, *value, origin); 1036 result->set_uint64_t(*value); 1037 *value = old_value; 1038 result->set_origin(origin); 1039 return Flag::SUCCESS; 1040 } 1041 1042 Flag::Error CommandLineFlagsEx::uint64_tAtPut(CommandLineFlagWithType flag, uint64_t value, Flag::Flags origin) { 1043 Flag* faddr = address_of_flag(flag); 1044 guarantee(faddr != NULL && faddr->is_uint64_t(), "wrong flag type"); 1045 Flag::Error check = apply_constraint_and_check_range_uint64_t(faddr->_name, &value); 1046 if (check != Flag::SUCCESS) return check; 1047 trace_flag_changed<EventUnsignedLongFlagChanged, u8>(faddr->_name, faddr->get_uint64_t(), value, origin); 1048 faddr->set_uint64_t(value); 1049 faddr->set_origin(origin); 1050 return Flag::SUCCESS; 1051 } 1052 1053 Flag::Error CommandLineFlags::size_tAt(const char* name, size_t len, size_t* value, bool allow_locked, bool return_flag) { 1054 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag); 1055 if (result == NULL) return Flag::INVALID_FLAG; 1056 if (!result->is_size_t()) return Flag::WRONG_FORMAT; 1057 *value = result->get_size_t(); 1058 return Flag::SUCCESS; 1059 } 1060 1061 static Flag::Error apply_constraint_and_check_range_size_t(const char* name, size_t* new_value, bool verbose = true) { 1062 Flag::Error status = Flag::SUCCESS; 1063 CommandLineFlagRange* range = CommandLineFlagRangeList::find(name); 1064 if (range != NULL) { 1065 status = range->check_size_t(*new_value, verbose); 1066 } 1067 if (status == Flag::SUCCESS) { 1068 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find(name); 1069 if (constraint != NULL) { 1070 status = constraint->apply_size_t(new_value, verbose); 1071 } 1072 } 1073 return status; 1074 } 1075 1076 Flag::Error CommandLineFlags::size_tAtPut(const char* name, size_t len, size_t* value, Flag::Flags origin) { 1077 Flag* result = Flag::find_flag(name, len); 1078 if (result == NULL) return Flag::INVALID_FLAG; 1079 if (!result->is_size_t()) return Flag::WRONG_FORMAT; 1080 Flag::Error check = apply_constraint_and_check_range_size_t(name, value, !CommandLineFlags::finishedInitializing()); 1081 if (check != Flag::SUCCESS) return check; 1082 size_t old_value = result->get_size_t(); 1083 trace_flag_changed<EventUnsignedLongFlagChanged, u8>(name, old_value, *value, origin); 1084 result->set_size_t(*value); 1085 *value = old_value; 1086 result->set_origin(origin); 1087 return Flag::SUCCESS; 1088 } 1089 1090 Flag::Error CommandLineFlagsEx::size_tAtPut(CommandLineFlagWithType flag, size_t value, Flag::Flags origin) { 1091 Flag* faddr = address_of_flag(flag); 1092 guarantee(faddr != NULL && faddr->is_size_t(), "wrong flag type"); 1093 Flag::Error check = apply_constraint_and_check_range_size_t(faddr->_name, &value); 1094 if (check != Flag::SUCCESS) return check; 1095 trace_flag_changed<EventUnsignedLongFlagChanged, u8>(faddr->_name, faddr->get_size_t(), value, origin); 1096 faddr->set_size_t(value); 1097 faddr->set_origin(origin); 1098 return Flag::SUCCESS; 1099 } 1100 1101 Flag::Error CommandLineFlags::doubleAt(const char* name, size_t len, double* value, bool allow_locked, bool return_flag) { 1102 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag); 1103 if (result == NULL) return Flag::INVALID_FLAG; 1104 if (!result->is_double()) return Flag::WRONG_FORMAT; 1105 *value = result->get_double(); 1106 return Flag::SUCCESS; 1107 } 1108 1109 static Flag::Error apply_constraint_and_check_range_double(const char* name, double* new_value, bool verbose = true) { 1110 Flag::Error status = Flag::SUCCESS; 1111 CommandLineFlagRange* range = CommandLineFlagRangeList::find(name); 1112 if (range != NULL) { 1113 status = range->check_double(*new_value, verbose); 1114 } 1115 if (status == Flag::SUCCESS) { 1116 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find(name); 1117 if (constraint != NULL) { 1118 status = constraint->apply_double(new_value, verbose); 1119 } 1120 } 1121 return status; 1122 } 1123 1124 Flag::Error CommandLineFlags::doubleAtPut(const char* name, size_t len, double* value, Flag::Flags origin) { 1125 Flag* result = Flag::find_flag(name, len); 1126 if (result == NULL) return Flag::INVALID_FLAG; 1127 if (!result->is_double()) return Flag::WRONG_FORMAT; 1128 Flag::Error check = apply_constraint_and_check_range_double(name, value, !CommandLineFlags::finishedInitializing()); 1129 if (check != Flag::SUCCESS) return check; 1130 double old_value = result->get_double(); 1131 trace_flag_changed<EventDoubleFlagChanged, double>(name, old_value, *value, origin); 1132 result->set_double(*value); 1133 *value = old_value; 1134 result->set_origin(origin); 1135 return Flag::SUCCESS; 1136 } 1137 1138 Flag::Error CommandLineFlagsEx::doubleAtPut(CommandLineFlagWithType flag, double value, Flag::Flags origin) { 1139 Flag* faddr = address_of_flag(flag); 1140 guarantee(faddr != NULL && faddr->is_double(), "wrong flag type"); 1141 Flag::Error check = apply_constraint_and_check_range_double(faddr->_name, &value, !CommandLineFlags::finishedInitializing()); 1142 if (check != Flag::SUCCESS) return check; 1143 trace_flag_changed<EventDoubleFlagChanged, double>(faddr->_name, faddr->get_double(), value, origin); 1144 faddr->set_double(value); 1145 faddr->set_origin(origin); 1146 return Flag::SUCCESS; 1147 } 1148 1149 Flag::Error CommandLineFlags::ccstrAt(const char* name, size_t len, ccstr* value, bool allow_locked, bool return_flag) { 1150 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag); 1151 if (result == NULL) return Flag::INVALID_FLAG; 1152 if (!result->is_ccstr()) return Flag::WRONG_FORMAT; 1153 *value = result->get_ccstr(); 1154 return Flag::SUCCESS; 1155 } 1156 1157 Flag::Error CommandLineFlags::ccstrAtPut(const char* name, size_t len, ccstr* value, Flag::Flags origin) { 1158 Flag* result = Flag::find_flag(name, len); 1159 if (result == NULL) return Flag::INVALID_FLAG; 1160 if (!result->is_ccstr()) return Flag::WRONG_FORMAT; 1161 ccstr old_value = result->get_ccstr(); 1162 trace_flag_changed<EventStringFlagChanged, const char*>(name, old_value, *value, origin); 1163 char* new_value = NULL; 1164 if (*value != NULL) { 1165 new_value = os::strdup_check_oom(*value); 1166 } 1167 result->set_ccstr(new_value); 1168 if (result->is_default() && old_value != NULL) { 1169 // Prior value is NOT heap allocated, but was a literal constant. 1170 old_value = os::strdup_check_oom(old_value); 1171 } 1172 *value = old_value; 1173 result->set_origin(origin); 1174 return Flag::SUCCESS; 1175 } 1176 1177 Flag::Error CommandLineFlagsEx::ccstrAtPut(CommandLineFlagWithType flag, ccstr value, Flag::Flags origin) { 1178 Flag* faddr = address_of_flag(flag); 1179 guarantee(faddr != NULL && faddr->is_ccstr(), "wrong flag type"); 1180 ccstr old_value = faddr->get_ccstr(); 1181 trace_flag_changed<EventStringFlagChanged, const char*>(faddr->_name, old_value, value, origin); 1182 char* new_value = os::strdup_check_oom(value); 1183 faddr->set_ccstr(new_value); 1184 if (!faddr->is_default() && old_value != NULL) { 1185 // Prior value is heap allocated so free it. 1186 FREE_C_HEAP_ARRAY(char, old_value); 1187 } 1188 faddr->set_origin(origin); 1189 return Flag::SUCCESS; 1190 } 1191 1192 extern "C" { 1193 static int compare_flags(const void* void_a, const void* void_b) { 1194 return strcmp((*((Flag**) void_a))->_name, (*((Flag**) void_b))->_name); 1195 } 1196 } 1197 1198 void CommandLineFlags::printSetFlags(outputStream* out) { 1199 // Print which flags were set on the command line 1200 // note: this method is called before the thread structure is in place 1201 // which means resource allocation cannot be used. 1202 1203 // The last entry is the null entry. 1204 const size_t length = Flag::numFlags - 1; 1205 1206 // Sort 1207 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length, mtInternal); 1208 for (size_t i = 0; i < length; i++) { 1209 array[i] = &flagTable[i]; 1210 } 1211 qsort(array, length, sizeof(Flag*), compare_flags); 1212 1213 // Print 1214 for (size_t i = 0; i < length; i++) { 1215 if (array[i]->get_origin() /* naked field! */) { 1216 array[i]->print_as_flag(out); 1217 out->print(" "); 1218 } 1219 } 1220 out->cr(); 1221 FREE_C_HEAP_ARRAY(Flag*, array); 1222 } 1223 1224 bool CommandLineFlags::_finished_initializing = false; 1225 1226 bool CommandLineFlags::check_all_ranges_and_constraints() { 1227 1228 //#define PRINT_RANGES_AND_CONSTRAINTS_SIZES 1229 #ifdef PRINT_RANGES_AND_CONSTRAINTS_SIZES 1230 { 1231 size_t size_ranges = sizeof(CommandLineFlagRangeList); 1232 for (int i=0; i<CommandLineFlagRangeList::length(); i++) { 1233 size_ranges += sizeof(CommandLineFlagRange); 1234 CommandLineFlagRange* range = CommandLineFlagRangeList::at(i); 1235 const char* name = range->name(); 1236 Flag* flag = Flag::find_flag(name, strlen(name), true, true); 1237 if (flag->is_intx()) { 1238 size_ranges += 2*sizeof(intx); 1239 size_ranges += sizeof(CommandLineFlagRange*); 1240 } else if (flag->is_uintx()) { 1241 size_ranges += 2*sizeof(uintx); 1242 size_ranges += sizeof(CommandLineFlagRange*); 1243 } else if (flag->is_uint64_t()) { 1244 size_ranges += 2*sizeof(uint64_t); 1245 size_ranges += sizeof(CommandLineFlagRange*); 1246 } else if (flag->is_size_t()) { 1247 size_ranges += 2*sizeof(size_t); 1248 size_ranges += sizeof(CommandLineFlagRange*); 1249 } else if (flag->is_double()) { 1250 size_ranges += 2*sizeof(double); 1251 size_ranges += sizeof(CommandLineFlagRange*); 1252 } 1253 } 1254 fprintf(stderr, "Size of %d ranges: " SIZE_FORMAT " bytes\n", 1255 CommandLineFlagRangeList::length(), size_ranges); 1256 } 1257 { 1258 size_t size_constraints = sizeof(CommandLineFlagConstraintList); 1259 for (int i=0; i<CommandLineFlagConstraintList::length(); i++) { 1260 size_constraints += sizeof(CommandLineFlagConstraint); 1261 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::at(i); 1262 const char* name = constraint->name(); 1263 Flag* flag = Flag::find_flag(name, strlen(name), true, true); 1264 if (flag->is_bool()) { 1265 size_constraints += sizeof(CommandLineFlagConstraintFunc_bool); 1266 size_constraints += sizeof(CommandLineFlagConstraint*); 1267 } else if (flag->is_intx()) { 1268 size_constraints += sizeof(CommandLineFlagConstraintFunc_intx); 1269 size_constraints += sizeof(CommandLineFlagConstraint*); 1270 } else if (flag->is_uintx()) { 1271 size_constraints += sizeof(CommandLineFlagConstraintFunc_uintx); 1272 size_constraints += sizeof(CommandLineFlagConstraint*); 1273 } else if (flag->is_uint64_t()) { 1274 size_constraints += sizeof(CommandLineFlagConstraintFunc_uint64_t); 1275 size_constraints += sizeof(CommandLineFlagConstraint*); 1276 } else if (flag->is_size_t()) { 1277 size_constraints += sizeof(CommandLineFlagConstraintFunc_size_t); 1278 size_constraints += sizeof(CommandLineFlagConstraint*); 1279 } else if (flag->is_double()) { 1280 size_constraints += sizeof(CommandLineFlagConstraintFunc_double); 1281 size_constraints += sizeof(CommandLineFlagConstraint*); 1282 } 1283 } 1284 fprintf(stderr, "Size of %d constraints: " SIZE_FORMAT " bytes\n", 1285 CommandLineFlagConstraintList::length(), size_constraints); 1286 } 1287 #endif // PRINT_RANGES_AND_CONSTRAINTS_SIZES 1288 1289 _finished_initializing = true; 1290 1291 bool status = true; 1292 for (int i=0; i<CommandLineFlagRangeList::length(); i++) { 1293 CommandLineFlagRange* range = CommandLineFlagRangeList::at(i); 1294 const char* name = range->name(); 1295 Flag* flag = Flag::find_flag(name, strlen(name), true, true); 1296 if (flag != NULL) { 1297 if (flag->is_intx()) { 1298 intx value = flag->get_intx(); 1299 if (range->check_intx(value, true) != Flag::SUCCESS) status = false; 1300 } else if (flag->is_uintx()) { 1301 uintx value = flag->get_uintx(); 1302 if (range->check_uintx(value, true) != Flag::SUCCESS) status = false; 1303 } else if (flag->is_uint64_t()) { 1304 uint64_t value = flag->get_uint64_t(); 1305 if (range->check_uint64_t(value, true) != Flag::SUCCESS) status = false; 1306 } else if (flag->is_size_t()) { 1307 size_t value = flag->get_size_t(); 1308 if (range->check_size_t(value, true) != Flag::SUCCESS) status = false; 1309 } else if (flag->is_double()) { 1310 double value = flag->get_double(); 1311 if (range->check_double(value, true) != Flag::SUCCESS) status = false; 1312 } 1313 } 1314 } 1315 for (int i=0; i<CommandLineFlagConstraintList::length(); i++) { 1316 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::at(i); 1317 const char*name = constraint->name(); 1318 Flag* flag = Flag::find_flag(name, strlen(name), true, true); 1319 if (flag != NULL) { 1320 if (flag->is_bool()) { 1321 bool value = flag->get_bool(); 1322 if (constraint->apply_bool(&value, true) != Flag::SUCCESS) status = false; 1323 } else if (flag->is_intx()) { 1324 intx value = flag->get_intx(); 1325 if (constraint->apply_intx(&value, true) != Flag::SUCCESS) status = false; 1326 } else if (flag->is_uintx()) { 1327 uintx value = flag->get_uintx(); 1328 if (constraint->apply_uintx(&value, true) != Flag::SUCCESS) status = false; 1329 } else if (flag->is_uint64_t()) { 1330 uint64_t value = flag->get_uint64_t(); 1331 if (constraint->apply_uint64_t(&value, true) != Flag::SUCCESS) status = false; 1332 } else if (flag->is_size_t()) { 1333 size_t value = flag->get_size_t(); 1334 if (constraint->apply_size_t(&value, true) != Flag::SUCCESS) status = false; 1335 } else if (flag->is_double()) { 1336 double value = flag->get_double(); 1337 if (constraint->apply_double(&value, true) != Flag::SUCCESS) status = false; 1338 } 1339 } 1340 } 1341 1342 Arguments::post_final_range_and_constraint_check(status); 1343 1344 return status; 1345 } 1346 1347 #ifndef PRODUCT 1348 1349 void CommandLineFlags::verify() { 1350 assert(Arguments::check_vm_args_consistency(), "Some flag settings conflict"); 1351 } 1352 1353 #endif // PRODUCT 1354 1355 #define ONLY_PRINT_PRODUCT_FLAGS 1356 1357 void CommandLineFlags::printFlags(outputStream* out, bool withComments, bool printRanges) { 1358 // Print the flags sorted by name 1359 // note: this method is called before the thread structure is in place 1360 // which means resource allocation cannot be used. 1361 1362 // The last entry is the null entry. 1363 const size_t length = Flag::numFlags - 1; 1364 1365 // Sort 1366 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length, mtInternal); 1367 for (size_t i = 0; i < length; i++) { 1368 array[i] = &flagTable[i]; 1369 } 1370 qsort(array, length, sizeof(Flag*), compare_flags); 1371 1372 // Print 1373 if (!printRanges) { 1374 out->print_cr("[Global flags]"); 1375 } else { 1376 out->print_cr("[Global flags ranges]"); 1377 } 1378 1379 for (size_t i = 0; i < length; i++) { 1380 if (array[i]->is_unlocked()) { 1381 #ifdef ONLY_PRINT_PRODUCT_FLAGS 1382 if (!array[i]->is_notproduct() && !array[i]->is_develop()) 1383 #endif // ONLY_PRINT_PRODUCT_FLAGS 1384 array[i]->print_on(out, withComments, printRanges); 1385 } 1386 } 1387 FREE_C_HEAP_ARRAY(Flag*, array); 1388 }