globals.cpp revision 8569:5bbf25472731
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 52PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC 53 54RUNTIME_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 67RUNTIME_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 76ARCH_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 84MATERIALIZE_FLAGS_EXT 85 86static bool is_product_build() { 87#ifdef PRODUCT 88 return true; 89#else 90 return false; 91#endif 92} 93 94void Flag::check_writable() { 95 if (is_constant_in_binary()) { 96 fatal(err_msg("flag is constant: %s", _name)); 97 } 98} 99 100bool Flag::is_bool() const { 101 return strcmp(_type, "bool") == 0; 102} 103 104bool Flag::get_bool() const { 105 return *((bool*) _addr); 106} 107 108void Flag::set_bool(bool value) { 109 check_writable(); 110 *((bool*) _addr) = value; 111} 112 113bool Flag::is_int() const { 114 return strcmp(_type, "int") == 0; 115} 116 117int Flag::get_int() const { 118 return *((int*) _addr); 119} 120 121void Flag::set_int(int value) { 122 check_writable(); 123 *((int*) _addr) = value; 124} 125 126bool Flag::is_uint() const { 127 return strcmp(_type, "uint") == 0; 128} 129 130uint Flag::get_uint() const { 131 return *((uint*) _addr); 132} 133 134void Flag::set_uint(uint value) { 135 check_writable(); 136 *((uint*) _addr) = value; 137} 138 139bool Flag::is_intx() const { 140 return strcmp(_type, "intx") == 0; 141} 142 143intx Flag::get_intx() const { 144 return *((intx*) _addr); 145} 146 147void Flag::set_intx(intx value) { 148 check_writable(); 149 *((intx*) _addr) = value; 150} 151 152bool Flag::is_uintx() const { 153 return strcmp(_type, "uintx") == 0; 154} 155 156uintx Flag::get_uintx() const { 157 return *((uintx*) _addr); 158} 159 160void Flag::set_uintx(uintx value) { 161 check_writable(); 162 *((uintx*) _addr) = value; 163} 164 165bool Flag::is_uint64_t() const { 166 return strcmp(_type, "uint64_t") == 0; 167} 168 169uint64_t Flag::get_uint64_t() const { 170 return *((uint64_t*) _addr); 171} 172 173void Flag::set_uint64_t(uint64_t value) { 174 check_writable(); 175 *((uint64_t*) _addr) = value; 176} 177 178bool Flag::is_size_t() const { 179 return strcmp(_type, "size_t") == 0; 180} 181 182size_t Flag::get_size_t() const { 183 return *((size_t*) _addr); 184} 185 186void Flag::set_size_t(size_t value) { 187 check_writable(); 188 *((size_t*) _addr) = value; 189} 190 191bool Flag::is_double() const { 192 return strcmp(_type, "double") == 0; 193} 194 195double Flag::get_double() const { 196 return *((double*) _addr); 197} 198 199void Flag::set_double(double value) { 200 check_writable(); 201 *((double*) _addr) = value; 202} 203 204bool Flag::is_ccstr() const { 205 return strcmp(_type, "ccstr") == 0 || strcmp(_type, "ccstrlist") == 0; 206} 207 208bool Flag::ccstr_accumulates() const { 209 return strcmp(_type, "ccstrlist") == 0; 210} 211 212ccstr Flag::get_ccstr() const { 213 return *((ccstr*) _addr); 214} 215 216void Flag::set_ccstr(ccstr value) { 217 check_writable(); 218 *((ccstr*) _addr) = value; 219} 220 221 222Flag::Flags Flag::get_origin() { 223 return Flags(_flags & VALUE_ORIGIN_MASK); 224} 225 226void Flag::set_origin(Flags origin) { 227 assert((origin & VALUE_ORIGIN_MASK) == origin, "sanity"); 228 _flags = Flags((_flags & ~VALUE_ORIGIN_MASK) | origin); 229} 230 231bool Flag::is_default() { 232 return (get_origin() == DEFAULT); 233} 234 235bool Flag::is_ergonomic() { 236 return (get_origin() == ERGONOMIC); 237} 238 239bool Flag::is_command_line() { 240 return (get_origin() == COMMAND_LINE); 241} 242 243bool Flag::is_product() const { 244 return (_flags & KIND_PRODUCT) != 0; 245} 246 247bool Flag::is_manageable() const { 248 return (_flags & KIND_MANAGEABLE) != 0; 249} 250 251bool Flag::is_diagnostic() const { 252 return (_flags & KIND_DIAGNOSTIC) != 0; 253} 254 255bool Flag::is_experimental() const { 256 return (_flags & KIND_EXPERIMENTAL) != 0; 257} 258 259bool Flag::is_notproduct() const { 260 return (_flags & KIND_NOT_PRODUCT) != 0; 261} 262 263bool Flag::is_develop() const { 264 return (_flags & KIND_DEVELOP) != 0; 265} 266 267bool Flag::is_read_write() const { 268 return (_flags & KIND_READ_WRITE) != 0; 269} 270 271bool 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 */ 279bool Flag::is_constant_in_binary() const { 280#ifdef PRODUCT 281 return is_notproduct() || is_develop(); 282#else 283 return false; 284#endif 285} 286 287bool Flag::is_unlocker() const { 288 return strcmp(_name, "UnlockDiagnosticVMOptions") == 0 || 289 strcmp(_name, "UnlockExperimentalVMOptions") == 0 || 290 is_unlocker_ext(); 291} 292 293bool 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 303void 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. 310void 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 335bool 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. 342bool 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 350PRAGMA_FORMAT_NONLITERAL_IGNORED_EXTERNAL 351void 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 433void 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 477void 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 567static 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 641Flag* Flag::flags = flagTable; 642size_t Flag::numFlags = (sizeof(flagTable) / sizeof(Flag)); 643 644inline 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 651Flag* 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 675static 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 693Flag* 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 721static 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 726bool 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 732bool 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 738bool 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 744bool 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 751template<class E, class T> 752static 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 761static Flag::Error get_status_error(Flag::Error status_range, Flag::Error status_constraint) { 762 if (status_range != Flag::SUCCESS) { 763 return status_range; 764 } else if (status_constraint != Flag::SUCCESS) { 765 return status_constraint; 766 } else { 767 return Flag::SUCCESS; 768 } 769} 770 771static Flag::Error apply_constraint_and_check_range_bool(const char* name, bool* new_value, bool verbose = true) { 772 Flag::Error status = Flag::SUCCESS; 773 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find(name); 774 if (constraint != NULL) { 775 status = constraint->apply_bool(new_value, verbose); 776 } 777 return status; 778} 779 780Flag::Error CommandLineFlags::boolAt(const char* name, size_t len, bool* value, bool allow_locked, bool return_flag) { 781 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag); 782 if (result == NULL) return Flag::INVALID_FLAG; 783 if (!result->is_bool()) return Flag::WRONG_FORMAT; 784 *value = result->get_bool(); 785 return Flag::SUCCESS; 786} 787 788Flag::Error CommandLineFlags::boolAtPut(const char* name, size_t len, bool* value, Flag::Flags origin) { 789 Flag* result = Flag::find_flag(name, len); 790 if (result == NULL) return Flag::INVALID_FLAG; 791 if (!result->is_bool()) return Flag::WRONG_FORMAT; 792 Flag::Error check = apply_constraint_and_check_range_bool(name, value, !CommandLineFlags::finishedInitializing()); 793 if (check != Flag::SUCCESS) return check; 794 bool old_value = result->get_bool(); 795 trace_flag_changed<EventBooleanFlagChanged, bool>(name, old_value, *value, origin); 796 result->set_bool(*value); 797 *value = old_value; 798 result->set_origin(origin); 799 return Flag::SUCCESS; 800} 801 802Flag::Error CommandLineFlagsEx::boolAtPut(CommandLineFlagWithType flag, bool value, Flag::Flags origin) { 803 Flag* faddr = address_of_flag(flag); 804 guarantee(faddr != NULL && faddr->is_bool(), "wrong flag type"); 805 Flag::Error check = apply_constraint_and_check_range_bool(faddr->_name, &value); 806 if (check != Flag::SUCCESS) return check; 807 trace_flag_changed<EventBooleanFlagChanged, bool>(faddr->_name, faddr->get_bool(), value, origin); 808 faddr->set_bool(value); 809 faddr->set_origin(origin); 810 return Flag::SUCCESS; 811} 812 813static Flag::Error apply_constraint_and_check_range_int(const char* name, int* new_value, bool verbose = true) { 814 Flag::Error range_status = Flag::SUCCESS; 815 CommandLineFlagRange* range = CommandLineFlagRangeList::find(name); 816 if (range != NULL) { 817 range_status = range->check_int(*new_value, verbose); 818 } 819 Flag::Error constraint_status = Flag::SUCCESS; 820 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find(name); 821 if (constraint != NULL) { 822 constraint_status = constraint->apply_int(new_value, verbose); 823 } 824 return get_status_error(range_status, constraint_status); 825} 826 827Flag::Error CommandLineFlags::intAt(const char* name, size_t len, int* value, bool allow_locked, bool return_flag) { 828 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag); 829 if (result == NULL) return Flag::INVALID_FLAG; 830 if (!result->is_int()) return Flag::WRONG_FORMAT; 831 *value = result->get_int(); 832 return Flag::SUCCESS; 833} 834 835Flag::Error CommandLineFlags::intAtPut(const char* name, size_t len, int* value, Flag::Flags origin) { 836 Flag* result = Flag::find_flag(name, len); 837 if (result == NULL) return Flag::INVALID_FLAG; 838 if (!result->is_int()) return Flag::WRONG_FORMAT; 839 Flag::Error check = apply_constraint_and_check_range_int(name, value, !CommandLineFlags::finishedInitializing()); 840 if (check != Flag::SUCCESS) return check; 841 int old_value = result->get_int(); 842 trace_flag_changed<EventIntFlagChanged, s4>(name, old_value, *value, origin); 843 result->set_int(*value); 844 *value = old_value; 845 result->set_origin(origin); 846 return Flag::SUCCESS; 847} 848 849Flag::Error CommandLineFlagsEx::intAtPut(CommandLineFlagWithType flag, int value, Flag::Flags origin) { 850 Flag* faddr = address_of_flag(flag); 851 guarantee(faddr != NULL && faddr->is_int(), "wrong flag type"); 852 trace_flag_changed<EventIntFlagChanged, s4>(faddr->_name, faddr->get_int(), value, origin); 853 faddr->set_int(value); 854 faddr->set_origin(origin); 855 return Flag::SUCCESS; 856} 857 858static Flag::Error apply_constraint_and_check_range_uint(const char* name, uint* new_value, bool verbose = true) { 859 Flag::Error range_status = Flag::SUCCESS; 860 CommandLineFlagRange* range = CommandLineFlagRangeList::find(name); 861 if (range != NULL) { 862 range_status = range->check_uint(*new_value, verbose); 863 } 864 Flag::Error constraint_status = Flag::SUCCESS; 865 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find(name); 866 if (constraint != NULL) { 867 constraint_status = constraint->apply_uint(new_value, verbose); 868 } 869 return get_status_error(range_status, constraint_status); 870} 871 872Flag::Error CommandLineFlags::uintAt(const char* name, size_t len, uint* value, bool allow_locked, bool return_flag) { 873 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag); 874 if (result == NULL) return Flag::INVALID_FLAG; 875 if (!result->is_uint()) return Flag::WRONG_FORMAT; 876 *value = result->get_uint(); 877 return Flag::SUCCESS; 878} 879 880Flag::Error CommandLineFlags::uintAtPut(const char* name, size_t len, uint* value, Flag::Flags origin) { 881 Flag* result = Flag::find_flag(name, len); 882 if (result == NULL) return Flag::INVALID_FLAG; 883 if (!result->is_uint()) return Flag::WRONG_FORMAT; 884 Flag::Error check = apply_constraint_and_check_range_uint(name, value, !CommandLineFlags::finishedInitializing()); 885 if (check != Flag::SUCCESS) return check; 886 uint old_value = result->get_uint(); 887 trace_flag_changed<EventUnsignedIntFlagChanged, u4>(name, old_value, *value, origin); 888 result->set_uint(*value); 889 *value = old_value; 890 result->set_origin(origin); 891 return Flag::SUCCESS; 892} 893 894Flag::Error CommandLineFlagsEx::uintAtPut(CommandLineFlagWithType flag, uint value, Flag::Flags origin) { 895 Flag* faddr = address_of_flag(flag); 896 guarantee(faddr != NULL && faddr->is_uint(), "wrong flag type"); 897 trace_flag_changed<EventUnsignedIntFlagChanged, u4>(faddr->_name, faddr->get_uint(), value, origin); 898 faddr->set_uint(value); 899 faddr->set_origin(origin); 900 return Flag::SUCCESS; 901} 902 903Flag::Error CommandLineFlags::intxAt(const char* name, size_t len, intx* value, bool allow_locked, bool return_flag) { 904 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag); 905 if (result == NULL) return Flag::INVALID_FLAG; 906 if (!result->is_intx()) return Flag::WRONG_FORMAT; 907 *value = result->get_intx(); 908 return Flag::SUCCESS; 909} 910 911static Flag::Error apply_constraint_and_check_range_intx(const char* name, intx* new_value, bool verbose = true) { 912 Flag::Error range_status = Flag::SUCCESS; 913 CommandLineFlagRange* range = CommandLineFlagRangeList::find(name); 914 if (range != NULL) { 915 range_status = range->check_intx(*new_value, verbose); 916 } 917 Flag::Error constraint_status = Flag::SUCCESS; 918 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find(name); 919 if (constraint != NULL) { 920 constraint_status = constraint->apply_intx(new_value, verbose); 921 } 922 return get_status_error(range_status, constraint_status); 923} 924 925Flag::Error CommandLineFlags::intxAtPut(const char* name, size_t len, intx* value, Flag::Flags origin) { 926 Flag* result = Flag::find_flag(name, len); 927 if (result == NULL) return Flag::INVALID_FLAG; 928 if (!result->is_intx()) return Flag::WRONG_FORMAT; 929 Flag::Error check = apply_constraint_and_check_range_intx(name, value, !CommandLineFlags::finishedInitializing()); 930 if (check != Flag::SUCCESS) return check; 931 intx old_value = result->get_intx(); 932 trace_flag_changed<EventLongFlagChanged, intx>(name, old_value, *value, origin); 933 result->set_intx(*value); 934 *value = old_value; 935 result->set_origin(origin); 936 return Flag::SUCCESS; 937} 938 939Flag::Error CommandLineFlagsEx::intxAtPut(CommandLineFlagWithType flag, intx value, Flag::Flags origin) { 940 Flag* faddr = address_of_flag(flag); 941 guarantee(faddr != NULL && faddr->is_intx(), "wrong flag type"); 942 Flag::Error check = apply_constraint_and_check_range_intx(faddr->_name, &value); 943 if (check != Flag::SUCCESS) return check; 944 trace_flag_changed<EventLongFlagChanged, intx>(faddr->_name, faddr->get_intx(), value, origin); 945 faddr->set_intx(value); 946 faddr->set_origin(origin); 947 return Flag::SUCCESS; 948} 949 950Flag::Error CommandLineFlags::uintxAt(const char* name, size_t len, uintx* value, bool allow_locked, bool return_flag) { 951 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag); 952 if (result == NULL) return Flag::INVALID_FLAG; 953 if (!result->is_uintx()) return Flag::WRONG_FORMAT; 954 *value = result->get_uintx(); 955 return Flag::SUCCESS; 956} 957 958static Flag::Error apply_constraint_and_check_range_uintx(const char* name, uintx* new_value, bool verbose = true) { 959 Flag::Error range_status = Flag::SUCCESS; 960 CommandLineFlagRange* range = CommandLineFlagRangeList::find(name); 961 if (range != NULL) { 962 range_status = range->check_uintx(*new_value, verbose); 963 } 964 Flag::Error constraint_status = Flag::SUCCESS; 965 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find(name); 966 if (constraint != NULL) { 967 constraint_status = constraint->apply_uintx(new_value, verbose); 968 } 969 return get_status_error(range_status, constraint_status); 970} 971 972Flag::Error CommandLineFlags::uintxAtPut(const char* name, size_t len, uintx* value, Flag::Flags origin) { 973 Flag* result = Flag::find_flag(name, len); 974 if (result == NULL) return Flag::INVALID_FLAG; 975 if (!result->is_uintx()) return Flag::WRONG_FORMAT; 976 Flag::Error check = apply_constraint_and_check_range_uintx(name, value, !CommandLineFlags::finishedInitializing()); 977 if (check != Flag::SUCCESS) return check; 978 uintx old_value = result->get_uintx(); 979 trace_flag_changed<EventUnsignedLongFlagChanged, u8>(name, old_value, *value, origin); 980 result->set_uintx(*value); 981 *value = old_value; 982 result->set_origin(origin); 983 return Flag::SUCCESS; 984} 985 986Flag::Error CommandLineFlagsEx::uintxAtPut(CommandLineFlagWithType flag, uintx value, Flag::Flags origin) { 987 Flag* faddr = address_of_flag(flag); 988 guarantee(faddr != NULL && faddr->is_uintx(), "wrong flag type"); 989 Flag::Error check = apply_constraint_and_check_range_uintx(faddr->_name, &value); 990 if (check != Flag::SUCCESS) return check; 991 trace_flag_changed<EventUnsignedLongFlagChanged, u8>(faddr->_name, faddr->get_uintx(), value, origin); 992 faddr->set_uintx(value); 993 faddr->set_origin(origin); 994 return Flag::SUCCESS; 995} 996 997Flag::Error CommandLineFlags::uint64_tAt(const char* name, size_t len, uint64_t* value, bool allow_locked, bool return_flag) { 998 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag); 999 if (result == NULL) return Flag::INVALID_FLAG; 1000 if (!result->is_uint64_t()) return Flag::WRONG_FORMAT; 1001 *value = result->get_uint64_t(); 1002 return Flag::SUCCESS; 1003} 1004 1005static Flag::Error apply_constraint_and_check_range_uint64_t(const char* name, uint64_t* new_value, bool verbose = true) { 1006 Flag::Error range_status = Flag::SUCCESS; 1007 CommandLineFlagRange* range = CommandLineFlagRangeList::find(name); 1008 if (range != NULL) { 1009 range_status = range->check_uint64_t(*new_value, verbose); 1010 } 1011 Flag::Error constraint_status = Flag::SUCCESS; 1012 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find(name); 1013 if (constraint != NULL) { 1014 constraint_status = constraint->apply_uint64_t(new_value, verbose); 1015 } 1016 return get_status_error(range_status, constraint_status); 1017} 1018 1019Flag::Error CommandLineFlags::uint64_tAtPut(const char* name, size_t len, uint64_t* value, Flag::Flags origin) { 1020 Flag* result = Flag::find_flag(name, len); 1021 if (result == NULL) return Flag::INVALID_FLAG; 1022 if (!result->is_uint64_t()) return Flag::WRONG_FORMAT; 1023 Flag::Error check = apply_constraint_and_check_range_uint64_t(name, value, !CommandLineFlags::finishedInitializing()); 1024 if (check != Flag::SUCCESS) return check; 1025 uint64_t old_value = result->get_uint64_t(); 1026 trace_flag_changed<EventUnsignedLongFlagChanged, u8>(name, old_value, *value, origin); 1027 result->set_uint64_t(*value); 1028 *value = old_value; 1029 result->set_origin(origin); 1030 return Flag::SUCCESS; 1031} 1032 1033Flag::Error CommandLineFlagsEx::uint64_tAtPut(CommandLineFlagWithType flag, uint64_t value, Flag::Flags origin) { 1034 Flag* faddr = address_of_flag(flag); 1035 guarantee(faddr != NULL && faddr->is_uint64_t(), "wrong flag type"); 1036 Flag::Error check = apply_constraint_and_check_range_uint64_t(faddr->_name, &value); 1037 if (check != Flag::SUCCESS) return check; 1038 trace_flag_changed<EventUnsignedLongFlagChanged, u8>(faddr->_name, faddr->get_uint64_t(), value, origin); 1039 faddr->set_uint64_t(value); 1040 faddr->set_origin(origin); 1041 return Flag::SUCCESS; 1042} 1043 1044Flag::Error CommandLineFlags::size_tAt(const char* name, size_t len, size_t* value, bool allow_locked, bool return_flag) { 1045 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag); 1046 if (result == NULL) return Flag::INVALID_FLAG; 1047 if (!result->is_size_t()) return Flag::WRONG_FORMAT; 1048 *value = result->get_size_t(); 1049 return Flag::SUCCESS; 1050} 1051 1052static Flag::Error apply_constraint_and_check_range_size_t(const char* name, size_t* new_value, bool verbose = true) { 1053 Flag::Error range_status = Flag::SUCCESS; 1054 CommandLineFlagRange* range = CommandLineFlagRangeList::find(name); 1055 if (range != NULL) { 1056 range_status = range->check_size_t(*new_value, verbose); 1057 } 1058 Flag::Error constraint_status = Flag::SUCCESS; 1059 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find(name); 1060 if (constraint != NULL) { 1061 constraint_status = constraint->apply_size_t(new_value, verbose); 1062 } 1063 return get_status_error(range_status, constraint_status); 1064} 1065 1066Flag::Error CommandLineFlags::size_tAtPut(const char* name, size_t len, size_t* value, Flag::Flags origin) { 1067 Flag* result = Flag::find_flag(name, len); 1068 if (result == NULL) return Flag::INVALID_FLAG; 1069 if (!result->is_size_t()) return Flag::WRONG_FORMAT; 1070 Flag::Error check = apply_constraint_and_check_range_size_t(name, value, !CommandLineFlags::finishedInitializing()); 1071 if (check != Flag::SUCCESS) return check; 1072 size_t old_value = result->get_size_t(); 1073 trace_flag_changed<EventUnsignedLongFlagChanged, u8>(name, old_value, *value, origin); 1074 result->set_size_t(*value); 1075 *value = old_value; 1076 result->set_origin(origin); 1077 return Flag::SUCCESS; 1078} 1079 1080Flag::Error CommandLineFlagsEx::size_tAtPut(CommandLineFlagWithType flag, size_t value, Flag::Flags origin) { 1081 Flag* faddr = address_of_flag(flag); 1082 guarantee(faddr != NULL && faddr->is_size_t(), "wrong flag type"); 1083 Flag::Error check = apply_constraint_and_check_range_size_t(faddr->_name, &value); 1084 if (check != Flag::SUCCESS) return check; 1085 trace_flag_changed<EventUnsignedLongFlagChanged, u8>(faddr->_name, faddr->get_size_t(), value, origin); 1086 faddr->set_size_t(value); 1087 faddr->set_origin(origin); 1088 return Flag::SUCCESS; 1089} 1090 1091Flag::Error CommandLineFlags::doubleAt(const char* name, size_t len, double* value, bool allow_locked, bool return_flag) { 1092 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag); 1093 if (result == NULL) return Flag::INVALID_FLAG; 1094 if (!result->is_double()) return Flag::WRONG_FORMAT; 1095 *value = result->get_double(); 1096 return Flag::SUCCESS; 1097} 1098 1099static Flag::Error apply_constraint_and_check_range_double(const char* name, double* new_value, bool verbose = true) { 1100 Flag::Error range_status = Flag::SUCCESS; 1101 CommandLineFlagRange* range = CommandLineFlagRangeList::find(name); 1102 if (range != NULL) { 1103 range_status = range->check_double(*new_value, verbose); 1104 } 1105 Flag::Error constraint_status = Flag::SUCCESS; 1106 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find(name); 1107 if (constraint != NULL) { 1108 constraint_status = constraint->apply_double(new_value, verbose); 1109 } 1110 return get_status_error(range_status, constraint_status); 1111} 1112 1113Flag::Error CommandLineFlags::doubleAtPut(const char* name, size_t len, double* value, Flag::Flags origin) { 1114 Flag* result = Flag::find_flag(name, len); 1115 if (result == NULL) return Flag::INVALID_FLAG; 1116 if (!result->is_double()) return Flag::WRONG_FORMAT; 1117 Flag::Error check = apply_constraint_and_check_range_double(name, value, !CommandLineFlags::finishedInitializing()); 1118 if (check != Flag::SUCCESS) return check; 1119 double old_value = result->get_double(); 1120 trace_flag_changed<EventDoubleFlagChanged, double>(name, old_value, *value, origin); 1121 result->set_double(*value); 1122 *value = old_value; 1123 result->set_origin(origin); 1124 return Flag::SUCCESS; 1125} 1126 1127Flag::Error CommandLineFlagsEx::doubleAtPut(CommandLineFlagWithType flag, double value, Flag::Flags origin) { 1128 Flag* faddr = address_of_flag(flag); 1129 guarantee(faddr != NULL && faddr->is_double(), "wrong flag type"); 1130 Flag::Error check = apply_constraint_and_check_range_double(faddr->_name, &value, !CommandLineFlags::finishedInitializing()); 1131 if (check != Flag::SUCCESS) return check; 1132 trace_flag_changed<EventDoubleFlagChanged, double>(faddr->_name, faddr->get_double(), value, origin); 1133 faddr->set_double(value); 1134 faddr->set_origin(origin); 1135 return Flag::SUCCESS; 1136} 1137 1138Flag::Error CommandLineFlags::ccstrAt(const char* name, size_t len, ccstr* value, bool allow_locked, bool return_flag) { 1139 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag); 1140 if (result == NULL) return Flag::INVALID_FLAG; 1141 if (!result->is_ccstr()) return Flag::WRONG_FORMAT; 1142 *value = result->get_ccstr(); 1143 return Flag::SUCCESS; 1144} 1145 1146Flag::Error CommandLineFlags::ccstrAtPut(const char* name, size_t len, ccstr* value, Flag::Flags origin) { 1147 Flag* result = Flag::find_flag(name, len); 1148 if (result == NULL) return Flag::INVALID_FLAG; 1149 if (!result->is_ccstr()) return Flag::WRONG_FORMAT; 1150 ccstr old_value = result->get_ccstr(); 1151 trace_flag_changed<EventStringFlagChanged, const char*>(name, old_value, *value, origin); 1152 char* new_value = NULL; 1153 if (*value != NULL) { 1154 new_value = os::strdup_check_oom(*value); 1155 } 1156 result->set_ccstr(new_value); 1157 if (result->is_default() && old_value != NULL) { 1158 // Prior value is NOT heap allocated, but was a literal constant. 1159 old_value = os::strdup_check_oom(old_value); 1160 } 1161 *value = old_value; 1162 result->set_origin(origin); 1163 return Flag::SUCCESS; 1164} 1165 1166Flag::Error CommandLineFlagsEx::ccstrAtPut(CommandLineFlagWithType flag, ccstr value, Flag::Flags origin) { 1167 Flag* faddr = address_of_flag(flag); 1168 guarantee(faddr != NULL && faddr->is_ccstr(), "wrong flag type"); 1169 ccstr old_value = faddr->get_ccstr(); 1170 trace_flag_changed<EventStringFlagChanged, const char*>(faddr->_name, old_value, value, origin); 1171 char* new_value = os::strdup_check_oom(value); 1172 faddr->set_ccstr(new_value); 1173 if (!faddr->is_default() && old_value != NULL) { 1174 // Prior value is heap allocated so free it. 1175 FREE_C_HEAP_ARRAY(char, old_value); 1176 } 1177 faddr->set_origin(origin); 1178 return Flag::SUCCESS; 1179} 1180 1181extern "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 1187void CommandLineFlags::printSetFlags(outputStream* out) { 1188 // Print which flags were set on the command line 1189 // note: this method is called before the thread structure is in place 1190 // which means resource allocation cannot be used. 1191 1192 // The last entry is the null entry. 1193 const size_t length = Flag::numFlags - 1; 1194 1195 // Sort 1196 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length, mtInternal); 1197 for (size_t i = 0; i < length; i++) { 1198 array[i] = &flagTable[i]; 1199 } 1200 qsort(array, length, sizeof(Flag*), compare_flags); 1201 1202 // Print 1203 for (size_t i = 0; i < length; i++) { 1204 if (array[i]->get_origin() /* naked field! */) { 1205 array[i]->print_as_flag(out); 1206 out->print(" "); 1207 } 1208 } 1209 out->cr(); 1210 FREE_C_HEAP_ARRAY(Flag*, array); 1211} 1212 1213bool CommandLineFlags::_finished_initializing = false; 1214 1215bool CommandLineFlags::check_all_ranges_and_constraints() { 1216 1217//#define PRINT_RANGES_AND_CONSTRAINTS_SIZES 1218#ifdef PRINT_RANGES_AND_CONSTRAINTS_SIZES 1219 { 1220 size_t size_ranges = sizeof(CommandLineFlagRangeList); 1221 for (int i=0; i<CommandLineFlagRangeList::length(); i++) { 1222 size_ranges += sizeof(CommandLineFlagRange); 1223 CommandLineFlagRange* range = CommandLineFlagRangeList::at(i); 1224 const char* name = range->name(); 1225 Flag* flag = Flag::find_flag(name, strlen(name), true, true); 1226 if (flag->is_intx()) { 1227 size_ranges += 2*sizeof(intx); 1228 size_ranges += sizeof(CommandLineFlagRange*); 1229 } else if (flag->is_uintx()) { 1230 size_ranges += 2*sizeof(uintx); 1231 size_ranges += sizeof(CommandLineFlagRange*); 1232 } else if (flag->is_uint64_t()) { 1233 size_ranges += 2*sizeof(uint64_t); 1234 size_ranges += sizeof(CommandLineFlagRange*); 1235 } else if (flag->is_size_t()) { 1236 size_ranges += 2*sizeof(size_t); 1237 size_ranges += sizeof(CommandLineFlagRange*); 1238 } else if (flag->is_double()) { 1239 size_ranges += 2*sizeof(double); 1240 size_ranges += sizeof(CommandLineFlagRange*); 1241 } 1242 } 1243 fprintf(stderr, "Size of %d ranges: "SIZE_FORMAT" bytes\n", 1244 CommandLineFlagRangeList::length(), size_ranges); 1245 } 1246 { 1247 size_t size_constraints = sizeof(CommandLineFlagConstraintList); 1248 for (int i=0; i<CommandLineFlagConstraintList::length(); i++) { 1249 size_constraints += sizeof(CommandLineFlagConstraint); 1250 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::at(i); 1251 const char* name = constraint->name(); 1252 Flag* flag = Flag::find_flag(name, strlen(name), true, true); 1253 if (flag->is_bool()) { 1254 size_constraints += sizeof(CommandLineFlagConstraintFunc_bool); 1255 size_constraints += sizeof(CommandLineFlagConstraint*); 1256 } else if (flag->is_intx()) { 1257 size_constraints += sizeof(CommandLineFlagConstraintFunc_intx); 1258 size_constraints += sizeof(CommandLineFlagConstraint*); 1259 } else if (flag->is_uintx()) { 1260 size_constraints += sizeof(CommandLineFlagConstraintFunc_uintx); 1261 size_constraints += sizeof(CommandLineFlagConstraint*); 1262 } else if (flag->is_uint64_t()) { 1263 size_constraints += sizeof(CommandLineFlagConstraintFunc_uint64_t); 1264 size_constraints += sizeof(CommandLineFlagConstraint*); 1265 } else if (flag->is_size_t()) { 1266 size_constraints += sizeof(CommandLineFlagConstraintFunc_size_t); 1267 size_constraints += sizeof(CommandLineFlagConstraint*); 1268 } else if (flag->is_double()) { 1269 size_constraints += sizeof(CommandLineFlagConstraintFunc_double); 1270 size_constraints += sizeof(CommandLineFlagConstraint*); 1271 } 1272 } 1273 fprintf(stderr, "Size of %d constraints: "SIZE_FORMAT" bytes\n", 1274 CommandLineFlagConstraintList::length(), size_constraints); 1275 } 1276#endif // PRINT_RANGES_AND_CONSTRAINTS_SIZES 1277 1278 _finished_initializing = true; 1279 1280 bool status = true; 1281 for (int i=0; i<CommandLineFlagRangeList::length(); i++) { 1282 CommandLineFlagRange* range = CommandLineFlagRangeList::at(i); 1283 const char* name = range->name(); 1284 Flag* flag = Flag::find_flag(name, strlen(name), true, true); 1285 if (flag != NULL) { 1286 if (flag->is_intx()) { 1287 intx value = flag->get_intx(); 1288 if (range->check_intx(value, true) != Flag::SUCCESS) status = false; 1289 } else if (flag->is_uintx()) { 1290 uintx value = flag->get_uintx(); 1291 if (range->check_uintx(value, true) != Flag::SUCCESS) status = false; 1292 } else if (flag->is_uint64_t()) { 1293 uint64_t value = flag->get_uint64_t(); 1294 if (range->check_uint64_t(value, true) != Flag::SUCCESS) status = false; 1295 } else if (flag->is_size_t()) { 1296 size_t value = flag->get_size_t(); 1297 if (range->check_size_t(value, true) != Flag::SUCCESS) status = false; 1298 } else if (flag->is_double()) { 1299 double value = flag->get_double(); 1300 if (range->check_double(value, true) != Flag::SUCCESS) status = false; 1301 } 1302 } 1303 } 1304 for (int i=0; i<CommandLineFlagConstraintList::length(); i++) { 1305 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::at(i); 1306 const char*name = constraint->name(); 1307 Flag* flag = Flag::find_flag(name, strlen(name), true, true); 1308 if (flag != NULL) { 1309 if (flag->is_bool()) { 1310 bool value = flag->get_bool(); 1311 if (constraint->apply_bool(&value, true) != Flag::SUCCESS) status = false; 1312 } else if (flag->is_intx()) { 1313 intx value = flag->get_intx(); 1314 if (constraint->apply_intx(&value, true) != Flag::SUCCESS) status = false; 1315 } else if (flag->is_uintx()) { 1316 uintx value = flag->get_uintx(); 1317 if (constraint->apply_uintx(&value, true) != Flag::SUCCESS) status = false; 1318 } else if (flag->is_uint64_t()) { 1319 uint64_t value = flag->get_uint64_t(); 1320 if (constraint->apply_uint64_t(&value, true) != Flag::SUCCESS) status = false; 1321 } else if (flag->is_size_t()) { 1322 size_t value = flag->get_size_t(); 1323 if (constraint->apply_size_t(&value, true) != Flag::SUCCESS) status = false; 1324 } else if (flag->is_double()) { 1325 double value = flag->get_double(); 1326 if (constraint->apply_double(&value, true) != Flag::SUCCESS) status = false; 1327 } 1328 } 1329 } 1330 1331 Arguments::post_final_range_and_constraint_check(status); 1332 1333 return status; 1334} 1335 1336#ifndef PRODUCT 1337 1338void CommandLineFlags::verify() { 1339 assert(Arguments::check_vm_args_consistency(), "Some flag settings conflict"); 1340} 1341 1342#endif // PRODUCT 1343 1344#define ONLY_PRINT_PRODUCT_FLAGS 1345 1346void CommandLineFlags::printFlags(outputStream* out, bool withComments, bool printRanges) { 1347 // Print the flags sorted by name 1348 // note: this method is called before the thread structure is in place 1349 // which means resource allocation cannot be used. 1350 1351 // The last entry is the null entry. 1352 const size_t length = Flag::numFlags - 1; 1353 1354 // Sort 1355 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length, mtInternal); 1356 for (size_t i = 0; i < length; i++) { 1357 array[i] = &flagTable[i]; 1358 } 1359 qsort(array, length, sizeof(Flag*), compare_flags); 1360 1361 // Print 1362 if (!printRanges) { 1363 out->print_cr("[Global flags]"); 1364 } else { 1365 out->print_cr("[Global flags ranges]"); 1366 } 1367 1368 for (size_t i = 0; i < length; i++) { 1369 if (array[i]->is_unlocked()) { 1370#ifdef ONLY_PRINT_PRODUCT_FLAGS 1371 if (!array[i]->is_notproduct() && !array[i]->is_develop()) 1372#endif // ONLY_PRINT_PRODUCT_FLAGS 1373 array[i]->print_on(out, withComments, printRanges); 1374 } 1375 } 1376 FREE_C_HEAP_ARRAY(Flag*, array); 1377} 1378