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 printRanges, bool withComments) { 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 == true ? 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 bool CommandLineFlagsEx::is_default(CommandLineFlag flag) { 727 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); 728 Flag* f = &Flag::flags[flag]; 729 return f->is_default(); 730 } 731 732 bool CommandLineFlagsEx::is_ergo(CommandLineFlag flag) { 733 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); 734 Flag* f = &Flag::flags[flag]; 735 return f->is_ergonomic(); 736 } 737 738 bool CommandLineFlagsEx::is_cmdline(CommandLineFlag flag) { 739 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); 740 Flag* f = &Flag::flags[flag]; 741 return f->is_command_line(); 742 } 743 744 bool CommandLineFlags::wasSetOnCmdline(const char* name, bool* value) { 745 Flag* result = Flag::find_flag((char*)name, strlen(name)); 746 if (result == NULL) return false; 747 *value = result->is_command_line(); 748 return true; 749 } 750 751 template<class E, class T> 752 static void trace_flag_changed(const char* name, const T old_value, const T new_value, const Flag::Flags origin) { 753 E e; 754 e.set_name(name); 755 e.set_old_value(old_value); 756 e.set_new_value(new_value); 757 e.set_origin(origin); 758 e.commit(); 759 } 760 761 static Flag::Error apply_constraint_and_check_range_bool(const char* name, bool* new_value, bool verbose = true) { 762 Flag::Error status = Flag::SUCCESS; 763 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find(name); 764 if (constraint != NULL) { 765 status = constraint->apply_bool(new_value, verbose); 766 } 767 return status; 768 } 769 770 Flag::Error CommandLineFlags::boolAt(const char* name, size_t len, bool* value, bool allow_locked, bool return_flag) { 771 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag); 772 if (result == NULL) return Flag::INVALID_FLAG; 773 if (!result->is_bool()) return Flag::WRONG_FORMAT; 774 *value = result->get_bool(); 775 return Flag::SUCCESS; 776 } 777 778 Flag::Error CommandLineFlags::boolAtPut(const char* name, size_t len, bool* value, Flag::Flags origin) { 779 Flag* result = Flag::find_flag(name, len); 780 if (result == NULL) return Flag::INVALID_FLAG; 781 if (!result->is_bool()) return Flag::WRONG_FORMAT; 782 Flag::Error check = apply_constraint_and_check_range_bool(name, value, !CommandLineFlags::finishedInitializing()); 783 if (check != Flag::SUCCESS) return check; 784 bool old_value = result->get_bool(); 785 trace_flag_changed<EventBooleanFlagChanged, bool>(name, old_value, *value, origin); 786 result->set_bool(*value); 787 *value = old_value; 788 result->set_origin(origin); 789 return Flag::SUCCESS; 790 } 791 792 Flag::Error CommandLineFlagsEx::boolAtPut(CommandLineFlagWithType flag, bool value, Flag::Flags origin) { 793 Flag* faddr = address_of_flag(flag); 794 guarantee(faddr != NULL && faddr->is_bool(), "wrong flag type"); 795 Flag::Error check = apply_constraint_and_check_range_bool(faddr->_name, &value); 796 if (check != Flag::SUCCESS) return check; 797 trace_flag_changed<EventBooleanFlagChanged, bool>(faddr->_name, faddr->get_bool(), value, origin); 798 faddr->set_bool(value); 799 faddr->set_origin(origin); 800 return Flag::SUCCESS; 801 } 802 803 static Flag::Error apply_constraint_and_check_range_int(const char* name, int* new_value, bool verbose = true) { 804 Flag::Error status = Flag::SUCCESS; 805 CommandLineFlagRange* range = CommandLineFlagRangeList::find(name); 806 if (range != NULL) { 807 status = range->check_int(*new_value, verbose); 808 } 809 if (status == Flag::SUCCESS) { 810 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find(name); 811 if (constraint != NULL) { 812 status = constraint->apply_int(new_value, verbose); 813 } 814 } 815 return status; 816 } 817 818 Flag::Error CommandLineFlags::intAt(const char* name, size_t len, int* value, bool allow_locked, bool return_flag) { 819 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag); 820 if (result == NULL) return Flag::INVALID_FLAG; 821 if (!result->is_int()) return Flag::WRONG_FORMAT; 822 *value = result->get_int(); 823 return Flag::SUCCESS; 824 } 825 826 Flag::Error CommandLineFlags::intAtPut(const char* name, size_t len, int* value, Flag::Flags origin) { 827 Flag* result = Flag::find_flag(name, len); 828 if (result == NULL) return Flag::INVALID_FLAG; 829 if (!result->is_int()) return Flag::WRONG_FORMAT; 830 Flag::Error check = apply_constraint_and_check_range_int(name, value, !CommandLineFlags::finishedInitializing()); 831 if (check != Flag::SUCCESS) return check; 832 int old_value = result->get_int(); 833 trace_flag_changed<EventIntFlagChanged, s4>(name, old_value, *value, origin); 834 result->set_int(*value); 835 *value = old_value; 836 result->set_origin(origin); 837 return Flag::SUCCESS; 838 } 839 840 Flag::Error CommandLineFlagsEx::intAtPut(CommandLineFlagWithType flag, int value, Flag::Flags origin) { 841 Flag* faddr = address_of_flag(flag); 842 guarantee(faddr != NULL && faddr->is_int(), "wrong flag type"); 843 trace_flag_changed<EventIntFlagChanged, s4>(faddr->_name, faddr->get_int(), value, origin); 844 faddr->set_int(value); 845 faddr->set_origin(origin); 846 return Flag::SUCCESS; 847 } 848 849 static Flag::Error apply_constraint_and_check_range_uint(const char* name, uint* new_value, bool verbose = true) { 850 Flag::Error status = Flag::SUCCESS; 851 CommandLineFlagRange* range = CommandLineFlagRangeList::find(name); 852 if (range != NULL) { 853 status = range->check_uint(*new_value, verbose); 854 } 855 if (status == Flag::SUCCESS) { 856 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find(name); 857 if (constraint != NULL) { 858 status = constraint->apply_uint(new_value, verbose); 859 } 860 } 861 return status; 862 } 863 864 Flag::Error CommandLineFlags::uintAt(const char* name, size_t len, uint* value, bool allow_locked, bool return_flag) { 865 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag); 866 if (result == NULL) return Flag::INVALID_FLAG; 867 if (!result->is_uint()) return Flag::WRONG_FORMAT; 868 *value = result->get_uint(); 869 return Flag::SUCCESS; 870 } 871 872 Flag::Error CommandLineFlags::uintAtPut(const char* name, size_t len, uint* value, Flag::Flags origin) { 873 Flag* result = Flag::find_flag(name, len); 874 if (result == NULL) return Flag::INVALID_FLAG; 875 if (!result->is_uint()) return Flag::WRONG_FORMAT; 876 Flag::Error check = apply_constraint_and_check_range_uint(name, value, !CommandLineFlags::finishedInitializing()); 877 if (check != Flag::SUCCESS) return check; 878 uint old_value = result->get_uint(); 879 trace_flag_changed<EventUnsignedIntFlagChanged, u4>(name, old_value, *value, origin); 880 result->set_uint(*value); 881 *value = old_value; 882 result->set_origin(origin); 883 return Flag::SUCCESS; 884 } 885 886 Flag::Error CommandLineFlagsEx::uintAtPut(CommandLineFlagWithType flag, uint value, Flag::Flags origin) { 887 Flag* faddr = address_of_flag(flag); 888 guarantee(faddr != NULL && faddr->is_uint(), "wrong flag type"); 889 trace_flag_changed<EventUnsignedIntFlagChanged, u4>(faddr->_name, faddr->get_uint(), value, origin); 890 faddr->set_uint(value); 891 faddr->set_origin(origin); 892 return Flag::SUCCESS; 893 } 894 895 Flag::Error CommandLineFlags::intxAt(const char* name, size_t len, intx* value, bool allow_locked, bool return_flag) { 896 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag); 897 if (result == NULL) return Flag::INVALID_FLAG; 898 if (!result->is_intx()) return Flag::WRONG_FORMAT; 899 *value = result->get_intx(); 900 return Flag::SUCCESS; 901 } 902 903 static Flag::Error apply_constraint_and_check_range_intx(const char* name, intx* new_value, bool verbose = true) { 904 Flag::Error status = Flag::SUCCESS; 905 CommandLineFlagRange* range = CommandLineFlagRangeList::find(name); 906 if (range != NULL) { 907 status = range->check_intx(*new_value, verbose); 908 } 909 if (status == Flag::SUCCESS) { 910 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find(name); 911 if (constraint != NULL) { 912 status = constraint->apply_intx(new_value, verbose); 913 } 914 } 915 return status; 916 } 917 918 Flag::Error CommandLineFlags::intxAtPut(const char* name, size_t len, intx* value, Flag::Flags origin) { 919 Flag* result = Flag::find_flag(name, len); 920 if (result == NULL) return Flag::INVALID_FLAG; 921 if (!result->is_intx()) return Flag::WRONG_FORMAT; 922 Flag::Error check = apply_constraint_and_check_range_intx(name, value, !CommandLineFlags::finishedInitializing()); 923 if (check != Flag::SUCCESS) return check; 924 intx old_value = result->get_intx(); 925 trace_flag_changed<EventLongFlagChanged, intx>(name, old_value, *value, origin); 926 result->set_intx(*value); 927 *value = old_value; 928 result->set_origin(origin); 929 return Flag::SUCCESS; 930 } 931 932 Flag::Error CommandLineFlagsEx::intxAtPut(CommandLineFlagWithType flag, intx value, Flag::Flags origin) { 933 Flag* faddr = address_of_flag(flag); 934 guarantee(faddr != NULL && faddr->is_intx(), "wrong flag type"); 935 Flag::Error check = apply_constraint_and_check_range_intx(faddr->_name, &value); 936 if (check != Flag::SUCCESS) return check; 937 trace_flag_changed<EventLongFlagChanged, intx>(faddr->_name, faddr->get_intx(), value, origin); 938 faddr->set_intx(value); 939 faddr->set_origin(origin); 940 return Flag::SUCCESS; 941 } 942 943 Flag::Error CommandLineFlags::uintxAt(const char* name, size_t len, uintx* value, bool allow_locked, bool return_flag) { 944 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag); 945 if (result == NULL) return Flag::INVALID_FLAG; 946 if (!result->is_uintx()) return Flag::WRONG_FORMAT; 947 *value = result->get_uintx(); 948 return Flag::SUCCESS; 949 } 950 951 static Flag::Error apply_constraint_and_check_range_uintx(const char* name, uintx* new_value, bool verbose = true) { 952 Flag::Error status = Flag::SUCCESS; 953 CommandLineFlagRange* range = CommandLineFlagRangeList::find(name); 954 if (range != NULL) { 955 status = range->check_uintx(*new_value, verbose); 956 } 957 if (status == Flag::SUCCESS) { 958 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find(name); 959 if (constraint != NULL) { 960 status = constraint->apply_uintx(new_value, verbose); 961 } 962 } 963 return status; 964 } 965 966 Flag::Error CommandLineFlags::uintxAtPut(const char* name, size_t len, uintx* value, Flag::Flags origin) { 967 Flag* result = Flag::find_flag(name, len); 968 if (result == NULL) return Flag::INVALID_FLAG; 969 if (!result->is_uintx()) return Flag::WRONG_FORMAT; 970 Flag::Error check = apply_constraint_and_check_range_uintx(name, value, !CommandLineFlags::finishedInitializing()); 971 if (check != Flag::SUCCESS) return check; 972 uintx old_value = result->get_uintx(); 973 trace_flag_changed<EventUnsignedLongFlagChanged, u8>(name, old_value, *value, origin); 974 result->set_uintx(*value); 975 *value = old_value; 976 result->set_origin(origin); 977 return Flag::SUCCESS; 978 } 979 980 Flag::Error CommandLineFlagsEx::uintxAtPut(CommandLineFlagWithType flag, uintx value, Flag::Flags origin) { 981 Flag* faddr = address_of_flag(flag); 982 guarantee(faddr != NULL && faddr->is_uintx(), "wrong flag type"); 983 Flag::Error check = apply_constraint_and_check_range_uintx(faddr->_name, &value); 984 if (check != Flag::SUCCESS) return check; 985 trace_flag_changed<EventUnsignedLongFlagChanged, u8>(faddr->_name, faddr->get_uintx(), value, origin); 986 faddr->set_uintx(value); 987 faddr->set_origin(origin); 988 return Flag::SUCCESS; 989 } 990 991 Flag::Error CommandLineFlags::uint64_tAt(const char* name, size_t len, uint64_t* value, bool allow_locked, bool return_flag) { 992 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag); 993 if (result == NULL) return Flag::INVALID_FLAG; 994 if (!result->is_uint64_t()) return Flag::WRONG_FORMAT; 995 *value = result->get_uint64_t(); 996 return Flag::SUCCESS; 997 } 998 999 static Flag::Error apply_constraint_and_check_range_uint64_t(const char* name, uint64_t* new_value, bool verbose = true) { 1000 Flag::Error status = Flag::SUCCESS; 1001 CommandLineFlagRange* range = CommandLineFlagRangeList::find(name); 1002 if (range != NULL) { 1003 status = range->check_uint64_t(*new_value, verbose); 1004 } 1005 if (status == Flag::SUCCESS) { 1006 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find(name); 1007 if (constraint != NULL) { 1008 status = constraint->apply_uint64_t(new_value, verbose); 1009 } 1010 } 1011 return status; 1012 } 1013 1014 Flag::Error CommandLineFlags::uint64_tAtPut(const char* name, size_t len, uint64_t* value, Flag::Flags origin) { 1015 Flag* result = Flag::find_flag(name, len); 1016 if (result == NULL) return Flag::INVALID_FLAG; 1017 if (!result->is_uint64_t()) return Flag::WRONG_FORMAT; 1018 Flag::Error check = apply_constraint_and_check_range_uint64_t(name, value, !CommandLineFlags::finishedInitializing()); 1019 if (check != Flag::SUCCESS) return check; 1020 uint64_t old_value = result->get_uint64_t(); 1021 trace_flag_changed<EventUnsignedLongFlagChanged, u8>(name, old_value, *value, origin); 1022 result->set_uint64_t(*value); 1023 *value = old_value; 1024 result->set_origin(origin); 1025 return Flag::SUCCESS; 1026 } 1027 1028 Flag::Error CommandLineFlagsEx::uint64_tAtPut(CommandLineFlagWithType flag, uint64_t value, Flag::Flags origin) { 1029 Flag* faddr = address_of_flag(flag); 1030 guarantee(faddr != NULL && faddr->is_uint64_t(), "wrong flag type"); 1031 Flag::Error check = apply_constraint_and_check_range_uint64_t(faddr->_name, &value); 1032 if (check != Flag::SUCCESS) return check; 1033 trace_flag_changed<EventUnsignedLongFlagChanged, u8>(faddr->_name, faddr->get_uint64_t(), value, origin); 1034 faddr->set_uint64_t(value); 1035 faddr->set_origin(origin); 1036 return Flag::SUCCESS; 1037 } 1038 1039 Flag::Error CommandLineFlags::size_tAt(const char* name, size_t len, size_t* value, bool allow_locked, bool return_flag) { 1040 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag); 1041 if (result == NULL) return Flag::INVALID_FLAG; 1042 if (!result->is_size_t()) return Flag::WRONG_FORMAT; 1043 *value = result->get_size_t(); 1044 return Flag::SUCCESS; 1045 } 1046 1047 static Flag::Error apply_constraint_and_check_range_size_t(const char* name, size_t* new_value, bool verbose = true) { 1048 Flag::Error status = Flag::SUCCESS; 1049 CommandLineFlagRange* range = CommandLineFlagRangeList::find(name); 1050 if (range != NULL) { 1051 status = range->check_size_t(*new_value, verbose); 1052 } 1053 if (status == Flag::SUCCESS) { 1054 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find(name); 1055 if (constraint != NULL) { 1056 status = constraint->apply_size_t(new_value, verbose); 1057 } 1058 } 1059 return status; 1060 } 1061 1062 Flag::Error CommandLineFlags::size_tAtPut(const char* name, size_t len, size_t* value, Flag::Flags origin) { 1063 Flag* result = Flag::find_flag(name, len); 1064 if (result == NULL) return Flag::INVALID_FLAG; 1065 if (!result->is_size_t()) return Flag::WRONG_FORMAT; 1066 Flag::Error check = apply_constraint_and_check_range_size_t(name, value, !CommandLineFlags::finishedInitializing()); 1067 if (check != Flag::SUCCESS) return check; 1068 size_t old_value = result->get_size_t(); 1069 trace_flag_changed<EventUnsignedLongFlagChanged, u8>(name, old_value, *value, origin); 1070 result->set_size_t(*value); 1071 *value = old_value; 1072 result->set_origin(origin); 1073 return Flag::SUCCESS; 1074 } 1075 1076 Flag::Error CommandLineFlagsEx::size_tAtPut(CommandLineFlagWithType flag, size_t value, Flag::Flags origin) { 1077 Flag* faddr = address_of_flag(flag); 1078 guarantee(faddr != NULL && faddr->is_size_t(), "wrong flag type"); 1079 Flag::Error check = apply_constraint_and_check_range_size_t(faddr->_name, &value); 1080 if (check != Flag::SUCCESS) return check; 1081 trace_flag_changed<EventUnsignedLongFlagChanged, u8>(faddr->_name, faddr->get_size_t(), value, origin); 1082 faddr->set_size_t(value); 1083 faddr->set_origin(origin); 1084 return Flag::SUCCESS; 1085 } 1086 1087 Flag::Error CommandLineFlags::doubleAt(const char* name, size_t len, double* value, bool allow_locked, bool return_flag) { 1088 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag); 1089 if (result == NULL) return Flag::INVALID_FLAG; 1090 if (!result->is_double()) return Flag::WRONG_FORMAT; 1091 *value = result->get_double(); 1092 return Flag::SUCCESS; 1093 } 1094 1095 static Flag::Error apply_constraint_and_check_range_double(const char* name, double* new_value, bool verbose = true) { 1096 Flag::Error status = Flag::SUCCESS; 1097 CommandLineFlagRange* range = CommandLineFlagRangeList::find(name); 1098 if (range != NULL) { 1099 status = range->check_double(*new_value, verbose); 1100 } 1101 if (status == Flag::SUCCESS) { 1102 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find(name); 1103 if (constraint != NULL) { 1104 status = constraint->apply_double(new_value, verbose); 1105 } 1106 } 1107 return status; 1108 } 1109 1110 Flag::Error CommandLineFlags::doubleAtPut(const char* name, size_t len, double* value, Flag::Flags origin) { 1111 Flag* result = Flag::find_flag(name, len); 1112 if (result == NULL) return Flag::INVALID_FLAG; 1113 if (!result->is_double()) return Flag::WRONG_FORMAT; 1114 Flag::Error check = apply_constraint_and_check_range_double(name, value, !CommandLineFlags::finishedInitializing()); 1115 if (check != Flag::SUCCESS) return check; 1116 double old_value = result->get_double(); 1117 trace_flag_changed<EventDoubleFlagChanged, double>(name, old_value, *value, origin); 1118 result->set_double(*value); 1119 *value = old_value; 1120 result->set_origin(origin); 1121 return Flag::SUCCESS; 1122 } 1123 1124 Flag::Error CommandLineFlagsEx::doubleAtPut(CommandLineFlagWithType flag, double value, Flag::Flags origin) { 1125 Flag* faddr = address_of_flag(flag); 1126 guarantee(faddr != NULL && faddr->is_double(), "wrong flag type"); 1127 Flag::Error check = apply_constraint_and_check_range_double(faddr->_name, &value, !CommandLineFlags::finishedInitializing()); 1128 if (check != Flag::SUCCESS) return check; 1129 trace_flag_changed<EventDoubleFlagChanged, double>(faddr->_name, faddr->get_double(), value, origin); 1130 faddr->set_double(value); 1131 faddr->set_origin(origin); 1132 return Flag::SUCCESS; 1133 } 1134 1135 Flag::Error CommandLineFlags::ccstrAt(const char* name, size_t len, ccstr* value, bool allow_locked, bool return_flag) { 1136 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag); 1137 if (result == NULL) return Flag::INVALID_FLAG; 1138 if (!result->is_ccstr()) return Flag::WRONG_FORMAT; 1139 *value = result->get_ccstr(); 1140 return Flag::SUCCESS; 1141 } 1142 1143 Flag::Error CommandLineFlags::ccstrAtPut(const char* name, size_t len, ccstr* value, Flag::Flags origin) { 1144 Flag* result = Flag::find_flag(name, len); 1145 if (result == NULL) return Flag::INVALID_FLAG; 1146 if (!result->is_ccstr()) return Flag::WRONG_FORMAT; 1147 ccstr old_value = result->get_ccstr(); 1148 trace_flag_changed<EventStringFlagChanged, const char*>(name, old_value, *value, origin); 1149 char* new_value = NULL; 1150 if (*value != NULL) { 1151 new_value = os::strdup_check_oom(*value); 1152 } 1153 result->set_ccstr(new_value); 1154 if (result->is_default() && old_value != NULL) { 1155 // Prior value is NOT heap allocated, but was a literal constant. 1156 old_value = os::strdup_check_oom(old_value); 1157 } 1158 *value = old_value; 1159 result->set_origin(origin); 1160 return Flag::SUCCESS; 1161 } 1162 1163 Flag::Error CommandLineFlagsEx::ccstrAtPut(CommandLineFlagWithType flag, ccstr value, Flag::Flags origin) { 1164 Flag* faddr = address_of_flag(flag); 1165 guarantee(faddr != NULL && faddr->is_ccstr(), "wrong flag type"); 1166 ccstr old_value = faddr->get_ccstr(); 1167 trace_flag_changed<EventStringFlagChanged, const char*>(faddr->_name, old_value, value, origin); 1168 char* new_value = os::strdup_check_oom(value); 1169 faddr->set_ccstr(new_value); 1170 if (!faddr->is_default() && old_value != NULL) { 1171 // Prior value is heap allocated so free it. 1172 FREE_C_HEAP_ARRAY(char, old_value); 1173 } 1174 faddr->set_origin(origin); 1175 return Flag::SUCCESS; 1176 } 1177 1178 //#define PRINT_FLAGS_SORTED_BY_TYPE_THEN_NAMES 1179 #ifndef PRINT_FLAGS_SORTED_BY_TYPE_THEN_NAMES 1180 1181 extern "C" { 1182 static int compare_flags(const void* void_a, const void* void_b) { 1183 return strcmp((*((Flag**) void_a))->_name, (*((Flag**) void_b))->_name); 1184 } 1185 } 1186 1187 #else // PRINT_FLAGS_SORTED_BY_TYPE_THEN_NAMES 1188 1189 void print_kind(Flag::Flags flags, char* string, int size) { 1190 struct Data { 1191 int flag; 1192 const char* name; 1193 }; 1194 1195 Data data[] = { 1196 { Flag::KIND_C1, "C1" }, 1197 { Flag::KIND_C2, "C2" }, 1198 { Flag::KIND_ARCH, "ARCH" }, 1199 { Flag::KIND_SHARK, "SHARK" }, 1200 { Flag::KIND_PLATFORM_DEPENDENT, "pd" }, 1201 { Flag::KIND_PRODUCT, "product" }, 1202 { Flag::KIND_MANAGEABLE, "manageable" }, 1203 { Flag::KIND_DIAGNOSTIC, "diagnostic" }, 1204 { Flag::KIND_EXPERIMENTAL, "experimental" }, 1205 { Flag::KIND_COMMERCIAL, "commercial" }, 1206 { Flag::KIND_NOT_PRODUCT, "notproduct" }, 1207 { Flag::KIND_DEVELOP, "develop" }, 1208 { Flag::KIND_LP64_PRODUCT, "lp64_product" }, 1209 { Flag::KIND_READ_WRITE, "rw" }, 1210 { -1, "" } 1211 }; 1212 1213 if ((flags & Flag::KIND_MASK) != 0) { 1214 strncpy(string, "{", size); 1215 bool is_first = true; 1216 1217 for (int i = 0; data[i].flag != -1; i++) { 1218 Data d = data[i]; 1219 if ((flags & d.flag) != 0) { 1220 if (is_first) { 1221 is_first = false; 1222 } else { 1223 os::strlcat(string, " ", size); 1224 } 1225 os::strlcat(string, d.name, size); 1226 } 1227 } 1228 1229 os::strlcat(string, "}", size); 1230 } 1231 } 1232 1233 extern "C" { 1234 // by kind, name 1235 static int compare_flags(const void* void_a, const void* void_b) { 1236 char buf_a[128]; 1237 print_kind((*((Flag**) void_a))->_flags, &buf_a[0], 127); 1238 char buf_b[128]; 1239 print_kind((*((Flag**) void_b))->_flags, &buf_b[0], 127); 1240 int comp_kind = strncmp(buf_a, buf_b, 127); 1241 if (comp_kind != 0) { 1242 return comp_kind; 1243 } else { 1244 return strcmp((*((Flag**) void_a))->_name, (*((Flag**) void_b))->_name); 1245 } 1246 } 1247 } 1248 1249 #endif //PRINT_FLAGS_SORTED_BY_TYPE_THEN_NAMES 1250 1251 void CommandLineFlags::printSetFlags(outputStream* out) { 1252 // Print which flags were set on the command line 1253 // note: this method is called before the thread structure is in place 1254 // which means resource allocation cannot be used. 1255 1256 // The last entry is the null entry. 1257 const size_t length = Flag::numFlags - 1; 1258 1259 // Sort 1260 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length, mtInternal); 1261 for (size_t i = 0; i < length; i++) { 1262 array[i] = &flagTable[i]; 1263 } 1264 qsort(array, length, sizeof(Flag*), compare_flags); 1265 1266 // Print 1267 for (size_t i = 0; i < length; i++) { 1268 if (array[i]->get_origin() /* naked field! */) { 1269 array[i]->print_as_flag(out); 1270 out->print(" "); 1271 } 1272 } 1273 out->cr(); 1274 FREE_C_HEAP_ARRAY(Flag*, array); 1275 } 1276 1277 bool CommandLineFlags::_finished_initializing = false; 1278 1279 bool CommandLineFlags::check_all_ranges_and_constraints() { 1280 //#define PRINT_RANGES_AND_CONSTRAINTS_SIZES 1281 #ifdef PRINT_RANGES_AND_CONSTRAINTS_SIZES 1282 { 1283 size_t size_ranges = sizeof(CommandLineFlagRangeList); 1284 for (int i=0; i<CommandLineFlagRangeList::length(); i++) { 1285 size_ranges += sizeof(CommandLineFlagRange); 1286 CommandLineFlagRange* range = CommandLineFlagRangeList::at(i); 1287 const char* name = range->name(); 1288 Flag* flag = Flag::find_flag(name, strlen(name), true, true); 1289 if (flag->is_intx()) { 1290 size_ranges += 2*sizeof(intx); 1291 size_ranges += sizeof(CommandLineFlagRange*); 1292 } else if (flag->is_uintx()) { 1293 size_ranges += 2*sizeof(uintx); 1294 size_ranges += sizeof(CommandLineFlagRange*); 1295 } else if (flag->is_uint64_t()) { 1296 size_ranges += 2*sizeof(uint64_t); 1297 size_ranges += sizeof(CommandLineFlagRange*); 1298 } else if (flag->is_size_t()) { 1299 size_ranges += 2*sizeof(size_t); 1300 size_ranges += sizeof(CommandLineFlagRange*); 1301 } else if (flag->is_double()) { 1302 size_ranges += 2*sizeof(double); 1303 size_ranges += sizeof(CommandLineFlagRange*); 1304 } 1305 } 1306 fprintf(stderr, "Size of %d ranges: "SIZE_FORMAT" bytes\n", 1307 CommandLineFlagRangeList::length(), size_ranges); 1308 } 1309 { 1310 size_t size_constraints = sizeof(CommandLineFlagConstraintList); 1311 for (int i=0; i<CommandLineFlagConstraintList::length(); i++) { 1312 size_constraints += sizeof(CommandLineFlagConstraint); 1313 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::at(i); 1314 const char* name = constraint->name(); 1315 Flag* flag = Flag::find_flag(name, strlen(name), true, true); 1316 if (flag->is_bool()) { 1317 size_constraints += sizeof(CommandLineFlagConstraintFunc_bool); 1318 size_constraints += sizeof(CommandLineFlagConstraint*); 1319 } else if (flag->is_intx()) { 1320 size_constraints += sizeof(CommandLineFlagConstraintFunc_intx); 1321 size_constraints += sizeof(CommandLineFlagConstraint*); 1322 } else if (flag->is_uintx()) { 1323 size_constraints += sizeof(CommandLineFlagConstraintFunc_uintx); 1324 size_constraints += sizeof(CommandLineFlagConstraint*); 1325 } else if (flag->is_uint64_t()) { 1326 size_constraints += sizeof(CommandLineFlagConstraintFunc_uint64_t); 1327 size_constraints += sizeof(CommandLineFlagConstraint*); 1328 } else if (flag->is_size_t()) { 1329 size_constraints += sizeof(CommandLineFlagConstraintFunc_size_t); 1330 size_constraints += sizeof(CommandLineFlagConstraint*); 1331 } else if (flag->is_double()) { 1332 size_constraints += sizeof(CommandLineFlagConstraintFunc_double); 1333 size_constraints += sizeof(CommandLineFlagConstraint*); 1334 } 1335 } 1336 fprintf(stderr, "Size of %d constraints: "SIZE_FORMAT" bytes\n", 1337 CommandLineFlagConstraintList::length(), size_constraints); 1338 } 1339 #endif // PRINT_RANGES_AND_CONSTRAINTS_SIZES 1340 1341 _finished_initializing = true; 1342 1343 bool status = true; 1344 for (int i=0; i<CommandLineFlagRangeList::length(); i++) { 1345 CommandLineFlagRange* range = CommandLineFlagRangeList::at(i); 1346 const char* name = range->name(); 1347 Flag* flag = Flag::find_flag(name, strlen(name), true, true); 1348 if (flag != NULL) { 1349 if (flag->is_intx()) { 1350 intx value = flag->get_intx(); 1351 if (range->check_intx(value, true) != Flag::SUCCESS) status = false; 1352 } else if (flag->is_uintx()) { 1353 uintx value = flag->get_uintx(); 1354 if (range->check_uintx(value, true) != Flag::SUCCESS) status = false; 1355 } else if (flag->is_uint64_t()) { 1356 uint64_t value = flag->get_uint64_t(); 1357 if (range->check_uint64_t(value, true) != Flag::SUCCESS) status = false; 1358 } else if (flag->is_size_t()) { 1359 size_t value = flag->get_size_t(); 1360 if (range->check_size_t(value, true) != Flag::SUCCESS) status = false; 1361 } else if (flag->is_double()) { 1362 double value = flag->get_double(); 1363 if (range->check_double(value, true) != Flag::SUCCESS) status = false; 1364 } 1365 } 1366 } 1367 for (int i=0; i<CommandLineFlagConstraintList::length(); i++) { 1368 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::at(i); 1369 const char*name = constraint->name(); 1370 Flag* flag = Flag::find_flag(name, strlen(name), true, true); 1371 if (flag != NULL) { 1372 if (flag->is_bool()) { 1373 bool value = flag->get_bool(); 1374 if (constraint->apply_bool(&value, true) != Flag::SUCCESS) status = false; 1375 } else if (flag->is_intx()) { 1376 intx value = flag->get_intx(); 1377 if (constraint->apply_intx(&value, true) != Flag::SUCCESS) status = false; 1378 } else if (flag->is_uintx()) { 1379 uintx value = flag->get_uintx(); 1380 if (constraint->apply_uintx(&value, true) != Flag::SUCCESS) status = false; 1381 } else if (flag->is_uint64_t()) { 1382 uint64_t value = flag->get_uint64_t(); 1383 if (constraint->apply_uint64_t(&value, true) != Flag::SUCCESS) status = false; 1384 } else if (flag->is_size_t()) { 1385 size_t value = flag->get_size_t(); 1386 if (constraint->apply_size_t(&value, true) != Flag::SUCCESS) status = false; 1387 } else if (flag->is_double()) { 1388 double value = flag->get_double(); 1389 if (constraint->apply_double(&value, true) != Flag::SUCCESS) status = false; 1390 } 1391 } 1392 } 1393 1394 Arguments::post_final_range_and_constraint_check(status); 1395 1396 return status; 1397 } 1398 1399 #ifndef PRODUCT 1400 1401 void CommandLineFlags::verify() { 1402 assert(Arguments::check_vm_args_consistency(), "Some flag settings conflict"); 1403 } 1404 1405 #endif // PRODUCT 1406 1407 #define ONLY_PRINT_PRODUCT_FLAGS 1408 1409 void CommandLineFlags::printFlags(outputStream* out, bool withComments, bool printRanges) { 1410 // Print the flags sorted by name 1411 // note: this method is called before the thread structure is in place 1412 // which means resource allocation cannot be used. 1413 1414 // The last entry is the null entry. 1415 const size_t length = Flag::numFlags - 1; 1416 1417 // Sort 1418 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length, mtInternal); 1419 for (size_t i = 0; i < length; i++) { 1420 array[i] = &flagTable[i]; 1421 } 1422 qsort(array, length, sizeof(Flag*), compare_flags); 1423 1424 // Print 1425 if (printRanges == false) { 1426 out->print_cr("[Global flags]"); 1427 } else { 1428 out->print_cr("[Global flags ranges]"); 1429 } 1430 1431 for (size_t i = 0; i < length; i++) { 1432 if (array[i]->is_unlocked()) { 1433 #ifdef ONLY_PRINT_PRODUCT_FLAGS 1434 if (!array[i]->is_notproduct() && !array[i]->is_develop()) 1435 #endif // ONLY_PRINT_PRODUCT_FLAGS 1436 array[i]->print_on(out, printRanges, withComments); 1437 } 1438 } 1439 FREE_C_HEAP_ARRAY(Flag*, array); 1440 }