1 /* 2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "memory/allocation.inline.hpp" 27 #include "oops/oop.inline.hpp" 28 #include "runtime/arguments.hpp" 29 #include "runtime/globals.hpp" 30 #include "runtime/globals_extension.hpp" 31 #include "utilities/ostream.hpp" 32 #include "utilities/macros.hpp" 33 #include "utilities/top.hpp" 34 #if INCLUDE_ALL_GCS 35 #include "gc_implementation/g1/g1_globals.hpp" 36 #endif // INCLUDE_ALL_GCS 37 #ifdef COMPILER1 38 #include "c1/c1_globals.hpp" 39 #endif 40 #ifdef COMPILER2 41 #include "opto/c2_globals.hpp" 42 #endif 43 #ifdef SHARK 44 #include "shark/shark_globals.hpp" 45 #endif 46 47 RUNTIME_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PD_DEVELOPER_FLAG, \ 48 MATERIALIZE_PRODUCT_FLAG, MATERIALIZE_PD_PRODUCT_FLAG, \ 49 MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_EXPERIMENTAL_FLAG, \ 50 MATERIALIZE_NOTPRODUCT_FLAG, \ 51 MATERIALIZE_MANAGEABLE_FLAG, MATERIALIZE_PRODUCT_RW_FLAG, \ 52 MATERIALIZE_LP64_PRODUCT_FLAG) 53 54 RUNTIME_OS_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PD_DEVELOPER_FLAG, \ 55 MATERIALIZE_PRODUCT_FLAG, MATERIALIZE_PD_PRODUCT_FLAG, \ 56 MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_NOTPRODUCT_FLAG) 57 58 ARCH_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PRODUCT_FLAG, \ 59 MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_EXPERIMENTAL_FLAG, \ 60 MATERIALIZE_NOTPRODUCT_FLAG) 61 62 MATERIALIZE_FLAGS_EXT 63 64 65 void Flag::check_writable() { 66 if (is_constant_in_binary()) { 67 fatal(err_msg("flag is constant: %s", _name)); 68 } 69 } 70 71 bool Flag::is_bool() const { 72 return strcmp(_type, "bool") == 0; 73 } 74 75 bool Flag::get_bool() const { 76 return *((bool*) _addr); 77 } 78 79 void Flag::set_bool(bool value) { 80 check_writable(); 81 *((bool*) _addr) = value; 82 } 83 84 bool Flag::is_intx() const { 85 return strcmp(_type, "intx") == 0; 86 } 87 88 intx Flag::get_intx() const { 89 return *((intx*) _addr); 90 } 91 92 void Flag::set_intx(intx value) { 93 check_writable(); 94 *((intx*) _addr) = value; 95 } 96 97 bool Flag::is_uintx() const { 98 return strcmp(_type, "uintx") == 0; 99 } 100 101 uintx Flag::get_uintx() const { 102 return *((uintx*) _addr); 103 } 104 105 void Flag::set_uintx(uintx value) { 106 check_writable(); 107 *((uintx*) _addr) = value; 108 } 109 110 bool Flag::is_uint64_t() const { 111 return strcmp(_type, "uint64_t") == 0; 112 } 113 114 uint64_t Flag::get_uint64_t() const { 115 return *((uint64_t*) _addr); 116 } 117 118 void Flag::set_uint64_t(uint64_t value) { 119 check_writable(); 120 *((uint64_t*) _addr) = value; 121 } 122 123 bool Flag::is_double() const { 124 return strcmp(_type, "double") == 0; 125 } 126 127 double Flag::get_double() const { 128 return *((double*) _addr); 129 } 130 131 void Flag::set_double(double value) { 132 check_writable(); 133 *((double*) _addr) = value; 134 } 135 136 bool Flag::is_ccstr() const { 137 return strcmp(_type, "ccstr") == 0 || strcmp(_type, "ccstrlist") == 0; 138 } 139 140 bool Flag::ccstr_accumulates() const { 141 return strcmp(_type, "ccstrlist") == 0; 142 } 143 144 ccstr Flag::get_ccstr() const { 145 return *((ccstr*) _addr); 146 } 147 148 void Flag::set_ccstr(ccstr value) { 149 check_writable(); 150 *((ccstr*) _addr) = value; 151 } 152 153 154 Flag::Flags Flag::get_origin() { 155 return Flags(_flags & VALUE_ORIGIN_MASK); 156 } 157 158 void Flag::set_origin(Flags origin) { 159 assert((origin & VALUE_ORIGIN_MASK) == origin, "sanity"); 160 _flags = Flags((_flags & ~VALUE_ORIGIN_MASK) | origin); 161 } 162 163 bool Flag::is_default() { 164 return (get_origin() == DEFAULT); 165 } 166 167 bool Flag::is_ergonomic() { 168 return (get_origin() == ERGONOMIC); 169 } 170 171 bool Flag::is_command_line() { 172 return (get_origin() == COMMAND_LINE); 173 } 174 175 bool Flag::is_product() const { 176 return (_flags & KIND_PRODUCT) != 0; 177 } 178 179 bool Flag::is_manageable() const { 180 return (_flags & KIND_MANAGEABLE) != 0; 181 } 182 183 bool Flag::is_diagnostic() const { 184 return (_flags & KIND_DIAGNOSTIC) != 0; 185 } 186 187 bool Flag::is_experimental() const { 188 return (_flags & KIND_EXPERIMENTAL) != 0; 189 } 190 191 bool Flag::is_notproduct() const { 192 return (_flags & KIND_NOT_PRODUCT) != 0; 193 } 194 195 bool Flag::is_develop() const { 196 return (_flags & KIND_DEVELOP) != 0; 197 } 198 199 bool Flag::is_read_write() const { 200 return (_flags & KIND_READ_WRITE) != 0; 201 } 202 203 bool Flag::is_commercial() const { 204 return (_flags & KIND_COMMERCIAL) != 0; 205 } 206 207 /** 208 * Returns if this flag is a constant in the binary. Right now this is 209 * true for notproduct and develop flags in product builds. 210 */ 211 bool Flag::is_constant_in_binary() const { 212 #ifdef PRODUCT 213 return is_notproduct() || is_develop(); 214 #else 215 return false; 216 #endif 217 } 218 219 bool Flag::is_unlocker() const { 220 return strcmp(_name, "UnlockDiagnosticVMOptions") == 0 || 221 strcmp(_name, "UnlockExperimentalVMOptions") == 0 || 222 is_unlocker_ext(); 223 } 224 225 bool Flag::is_unlocked() const { 226 if (is_diagnostic()) { 227 return UnlockDiagnosticVMOptions; 228 } 229 if (is_experimental()) { 230 return UnlockExperimentalVMOptions; 231 } 232 return is_unlocked_ext(); 233 } 234 235 // Get custom message for this locked flag, or return NULL if 236 // none is available. 237 void Flag::get_locked_message(char* buf, int buflen) const { 238 get_locked_message_ext(buf, buflen); 239 } 240 241 bool Flag::is_writeable() const { 242 return is_manageable() || (is_product() && is_read_write()) || is_writeable_ext(); 243 } 244 245 // All flags except "manageable" are assumed to be internal flags. 246 // Long term, we need to define a mechanism to specify which flags 247 // are external/stable and change this function accordingly. 248 bool Flag::is_external() const { 249 return is_manageable() || is_external_ext(); 250 } 251 252 253 // Length of format string (e.g. "%.1234s") for printing ccstr below 254 #define FORMAT_BUFFER_LEN 16 255 256 void Flag::print_on(outputStream* st, bool withComments) { 257 // Don't print notproduct and develop flags in a product build. 258 if (is_constant_in_binary()) { 259 return; 260 } 261 262 st->print("%9s %-40s %c= ", _type, _name, (!is_default() ? ':' : ' ')); 263 264 if (is_bool()) { 265 st->print("%-16s", get_bool() ? "true" : "false"); 266 } 267 if (is_intx()) { 268 st->print("%-16ld", get_intx()); 269 } 270 if (is_uintx()) { 271 st->print("%-16lu", get_uintx()); 272 } 273 if (is_uint64_t()) { 274 st->print("%-16lu", get_uint64_t()); 275 } 276 if (is_double()) { 277 st->print("%-16f", get_double()); 278 } 279 if (is_ccstr()) { 280 const char* cp = get_ccstr(); 281 if (cp != NULL) { 282 const char* eol; 283 while ((eol = strchr(cp, '\n')) != NULL) { 284 char format_buffer[FORMAT_BUFFER_LEN]; 285 size_t llen = pointer_delta(eol, cp, sizeof(char)); 286 jio_snprintf(format_buffer, FORMAT_BUFFER_LEN, 287 "%%." SIZE_FORMAT "s", llen); 288 st->print(format_buffer, cp); 289 st->cr(); 290 cp = eol+1; 291 st->print("%5s %-35s += ", "", _name); 292 } 293 st->print("%-16s", cp); 294 } 295 else st->print("%-16s", ""); 296 } 297 298 st->print("%-20"); 299 print_kind(st); 300 301 if (withComments) { 302 #ifndef PRODUCT 303 st->print("%s", _doc); 304 #endif 305 } 306 st->cr(); 307 } 308 309 void Flag::print_kind(outputStream* st) { 310 struct Data { 311 int flag; 312 const char* name; 313 }; 314 315 Data data[] = { 316 { KIND_C1, "C1" }, 317 { KIND_C2, "C2" }, 318 { KIND_ARCH, "ARCH" }, 319 { KIND_SHARK, "SHARK" }, 320 { KIND_PLATFORM_DEPENDENT, "pd" }, 321 { KIND_PRODUCT, "product" }, 322 { KIND_MANAGEABLE, "manageable" }, 323 { KIND_DIAGNOSTIC, "diagnostic" }, 324 { KIND_NOT_PRODUCT, "notproduct" }, 325 { KIND_DEVELOP, "develop" }, 326 { KIND_LP64_PRODUCT, "lp64_product" }, 327 { KIND_READ_WRITE, "rw" }, 328 { -1, "" } 329 }; 330 331 if ((_flags & KIND_MASK) != 0) { 332 st->print("{"); 333 bool is_first = true; 334 335 for (int i = 0; data[i].flag != -1; i++) { 336 Data d = data[i]; 337 if ((_flags & d.flag) != 0) { 338 if (is_first) { 339 is_first = false; 340 } else { 341 st->print(" "); 342 } 343 st->print(d.name); 344 } 345 } 346 347 st->print("}"); 348 } 349 } 350 351 void Flag::print_as_flag(outputStream* st) { 352 if (is_bool()) { 353 st->print("-XX:%s%s", get_bool() ? "+" : "-", _name); 354 } else if (is_intx()) { 355 st->print("-XX:%s=" INTX_FORMAT, _name, get_intx()); 356 } else if (is_uintx()) { 357 st->print("-XX:%s=" UINTX_FORMAT, _name, get_uintx()); 358 } else if (is_uint64_t()) { 359 st->print("-XX:%s=" UINT64_FORMAT, _name, get_uint64_t()); 360 } else if (is_double()) { 361 st->print("-XX:%s=%f", _name, get_double()); 362 } else if (is_ccstr()) { 363 st->print("-XX:%s=", _name); 364 const char* cp = get_ccstr(); 365 if (cp != NULL) { 366 // Need to turn embedded '\n's back into separate arguments 367 // Not so efficient to print one character at a time, 368 // but the choice is to do the transformation to a buffer 369 // and print that. And this need not be efficient. 370 for (; *cp != '\0'; cp += 1) { 371 switch (*cp) { 372 default: 373 st->print("%c", *cp); 374 break; 375 case '\n': 376 st->print(" -XX:%s=", _name); 377 break; 378 } 379 } 380 } 381 } else { 382 ShouldNotReachHere(); 383 } 384 } 385 386 // 4991491 do not "optimize out" the was_set false values: omitting them 387 // tickles a Microsoft compiler bug causing flagTable to be malformed 388 389 #define NAME(name) NOT_PRODUCT(&name) PRODUCT_ONLY(&CONST_##name) 390 391 #define RUNTIME_PRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_PRODUCT) }, 392 #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) }, 393 #define RUNTIME_DIAGNOSTIC_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_DIAGNOSTIC) }, 394 #define RUNTIME_EXPERIMENTAL_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_EXPERIMENTAL) }, 395 #define RUNTIME_MANAGEABLE_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_MANAGEABLE) }, 396 #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) }, 397 #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) }, 398 #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) }, 399 #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) }, 400 401 #ifdef _LP64 402 #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) }, 403 #else 404 #define RUNTIME_LP64_PRODUCT_FLAG_STRUCT(type, name, value, doc) /* flag is constant */ 405 #endif // _LP64 406 407 #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) }, 408 #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) }, 409 #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) }, 410 #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) }, 411 #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) }, 412 #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) }, 413 414 #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) }, 415 #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) }, 416 #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) }, 417 #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) }, 418 #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) }, 419 #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) }, 420 #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) }, 421 422 #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) }, 423 #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) }, 424 #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) }, 425 #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) }, 426 #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) }, 427 428 #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) }, 429 #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) }, 430 #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) }, 431 #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) }, 432 #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) }, 433 #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) }, 434 435 static Flag flagTable[] = { 436 RUNTIME_FLAGS(RUNTIME_DEVELOP_FLAG_STRUCT, RUNTIME_PD_DEVELOP_FLAG_STRUCT, RUNTIME_PRODUCT_FLAG_STRUCT, RUNTIME_PD_PRODUCT_FLAG_STRUCT, RUNTIME_DIAGNOSTIC_FLAG_STRUCT, RUNTIME_EXPERIMENTAL_FLAG_STRUCT, RUNTIME_NOTPRODUCT_FLAG_STRUCT, RUNTIME_MANAGEABLE_FLAG_STRUCT, RUNTIME_PRODUCT_RW_FLAG_STRUCT, RUNTIME_LP64_PRODUCT_FLAG_STRUCT) 437 RUNTIME_OS_FLAGS(RUNTIME_DEVELOP_FLAG_STRUCT, RUNTIME_PD_DEVELOP_FLAG_STRUCT, RUNTIME_PRODUCT_FLAG_STRUCT, RUNTIME_PD_PRODUCT_FLAG_STRUCT, RUNTIME_DIAGNOSTIC_FLAG_STRUCT, RUNTIME_NOTPRODUCT_FLAG_STRUCT) 438 #if INCLUDE_ALL_GCS 439 G1_FLAGS(RUNTIME_DEVELOP_FLAG_STRUCT, RUNTIME_PD_DEVELOP_FLAG_STRUCT, RUNTIME_PRODUCT_FLAG_STRUCT, RUNTIME_PD_PRODUCT_FLAG_STRUCT, RUNTIME_DIAGNOSTIC_FLAG_STRUCT, RUNTIME_EXPERIMENTAL_FLAG_STRUCT, RUNTIME_NOTPRODUCT_FLAG_STRUCT, RUNTIME_MANAGEABLE_FLAG_STRUCT, RUNTIME_PRODUCT_RW_FLAG_STRUCT) 440 #endif // INCLUDE_ALL_GCS 441 #ifdef COMPILER1 442 C1_FLAGS(C1_DEVELOP_FLAG_STRUCT, C1_PD_DEVELOP_FLAG_STRUCT, C1_PRODUCT_FLAG_STRUCT, C1_PD_PRODUCT_FLAG_STRUCT, C1_DIAGNOSTIC_FLAG_STRUCT, C1_NOTPRODUCT_FLAG_STRUCT) 443 #endif 444 #ifdef COMPILER2 445 C2_FLAGS(C2_DEVELOP_FLAG_STRUCT, C2_PD_DEVELOP_FLAG_STRUCT, C2_PRODUCT_FLAG_STRUCT, C2_PD_PRODUCT_FLAG_STRUCT, C2_DIAGNOSTIC_FLAG_STRUCT, C2_EXPERIMENTAL_FLAG_STRUCT, C2_NOTPRODUCT_FLAG_STRUCT) 446 #endif 447 #ifdef SHARK 448 SHARK_FLAGS(SHARK_DEVELOP_FLAG_STRUCT, SHARK_PD_DEVELOP_FLAG_STRUCT, SHARK_PRODUCT_FLAG_STRUCT, SHARK_PD_PRODUCT_FLAG_STRUCT, SHARK_DIAGNOSTIC_FLAG_STRUCT, SHARK_NOTPRODUCT_FLAG_STRUCT) 449 #endif 450 ARCH_FLAGS(ARCH_DEVELOP_FLAG_STRUCT, ARCH_PRODUCT_FLAG_STRUCT, ARCH_DIAGNOSTIC_FLAG_STRUCT, ARCH_EXPERIMENTAL_FLAG_STRUCT, ARCH_NOTPRODUCT_FLAG_STRUCT) 451 FLAGTABLE_EXT 452 {0, NULL, NULL} 453 }; 454 455 Flag* Flag::flags = flagTable; 456 size_t Flag::numFlags = (sizeof(flagTable) / sizeof(Flag)); 457 458 inline bool str_equal(const char* s, const char* q, size_t len) { 459 // s is null terminated, q is not! 460 if (strlen(s) != (unsigned int) len) return false; 461 return strncmp(s, q, len) == 0; 462 } 463 464 // Search the flag table for a named flag 465 Flag* Flag::find_flag(const char* name, size_t length, bool allow_locked) { 466 for (Flag* current = &flagTable[0]; current->_name != NULL; current++) { 467 if (str_equal(current->_name, name, length)) { 468 // Found a matching entry. 469 // Don't report notproduct and develop flags in product builds. 470 if (current->is_constant_in_binary()) { 471 return NULL; 472 } 473 // Report locked flags only if allowed. 474 if (!(current->is_unlocked() || current->is_unlocker())) { 475 if (!allow_locked) { 476 // disable use of locked flags, e.g. diagnostic, experimental, 477 // commercial... until they are explicitly unlocked 478 return NULL; 479 } 480 } 481 return current; 482 } 483 } 484 // Flag name is not in the flag table 485 return NULL; 486 } 487 488 // Compute string similarity based on Dice's coefficient 489 static float str_similar(const char* str1, const char* str2, size_t len2) { 490 int len1 = (int) strlen(str1); 491 int total = len1 + (int) len2; 492 493 int hit = 0; 494 495 for (int i = 0; i < len1 -1; ++i) { 496 for (int j = 0; j < (int) len2 -1; ++j) { 497 if ((str1[i] == str2[j]) && (str1[i+1] == str2[j+1])) { 498 ++hit; 499 break; 500 } 501 } 502 } 503 504 return 2.0f * (float) hit / (float) total; 505 } 506 507 Flag* Flag::fuzzy_match(const char* name, size_t length, bool allow_locked) { 508 float VMOptionsFuzzyMatchSimilarity = 0.7f; 509 Flag* match = NULL; 510 float score; 511 float max_score = -1; 512 513 for (Flag* current = &flagTable[0]; current->_name != NULL; current++) { 514 score = str_similar(current->_name, name, length); 515 if (score > max_score) { 516 max_score = score; 517 match = current; 518 } 519 } 520 521 if (!(match->is_unlocked() || match->is_unlocker())) { 522 if (!allow_locked) { 523 return NULL; 524 } 525 } 526 527 if (max_score < VMOptionsFuzzyMatchSimilarity) { 528 return NULL; 529 } 530 531 return match; 532 } 533 534 // Returns the address of the index'th element 535 static Flag* address_of_flag(CommandLineFlagWithType flag) { 536 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); 537 return &Flag::flags[flag]; 538 } 539 540 bool CommandLineFlagsEx::is_default(CommandLineFlag flag) { 541 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); 542 Flag* f = &Flag::flags[flag]; 543 return f->is_default(); 544 } 545 546 bool CommandLineFlagsEx::is_ergo(CommandLineFlag flag) { 547 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); 548 Flag* f = &Flag::flags[flag]; 549 return f->is_ergonomic(); 550 } 551 552 bool CommandLineFlagsEx::is_cmdline(CommandLineFlag flag) { 553 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); 554 Flag* f = &Flag::flags[flag]; 555 return f->is_command_line(); 556 } 557 558 bool CommandLineFlags::wasSetOnCmdline(const char* name, bool* value) { 559 Flag* result = Flag::find_flag((char*)name, strlen(name)); 560 if (result == NULL) return false; 561 *value = result->is_command_line(); 562 return true; 563 } 564 565 bool CommandLineFlags::boolAt(char* name, size_t len, bool* value) { 566 Flag* result = Flag::find_flag(name, len); 567 if (result == NULL) return false; 568 if (!result->is_bool()) return false; 569 *value = result->get_bool(); 570 return true; 571 } 572 573 bool CommandLineFlags::boolAtPut(char* name, size_t len, bool* value, Flag::Flags origin) { 574 Flag* result = Flag::find_flag(name, len); 575 if (result == NULL) return false; 576 if (!result->is_bool()) return false; 577 bool old_value = result->get_bool(); 578 result->set_bool(*value); 579 *value = old_value; 580 result->set_origin(origin); 581 return true; 582 } 583 584 void CommandLineFlagsEx::boolAtPut(CommandLineFlagWithType flag, bool value, Flag::Flags origin) { 585 Flag* faddr = address_of_flag(flag); 586 guarantee(faddr != NULL && faddr->is_bool(), "wrong flag type"); 587 faddr->set_bool(value); 588 faddr->set_origin(origin); 589 } 590 591 bool CommandLineFlags::intxAt(char* name, size_t len, intx* value) { 592 Flag* result = Flag::find_flag(name, len); 593 if (result == NULL) return false; 594 if (!result->is_intx()) return false; 595 *value = result->get_intx(); 596 return true; 597 } 598 599 bool CommandLineFlags::intxAtPut(char* name, size_t len, intx* value, Flag::Flags origin) { 600 Flag* result = Flag::find_flag(name, len); 601 if (result == NULL) return false; 602 if (!result->is_intx()) return false; 603 intx old_value = result->get_intx(); 604 result->set_intx(*value); 605 *value = old_value; 606 result->set_origin(origin); 607 return true; 608 } 609 610 void CommandLineFlagsEx::intxAtPut(CommandLineFlagWithType flag, intx value, Flag::Flags origin) { 611 Flag* faddr = address_of_flag(flag); 612 guarantee(faddr != NULL && faddr->is_intx(), "wrong flag type"); 613 faddr->set_intx(value); 614 faddr->set_origin(origin); 615 } 616 617 bool CommandLineFlags::uintxAt(char* name, size_t len, uintx* value) { 618 Flag* result = Flag::find_flag(name, len); 619 if (result == NULL) return false; 620 if (!result->is_uintx()) return false; 621 *value = result->get_uintx(); 622 return true; 623 } 624 625 bool CommandLineFlags::uintxAtPut(char* name, size_t len, uintx* value, Flag::Flags origin) { 626 Flag* result = Flag::find_flag(name, len); 627 if (result == NULL) return false; 628 if (!result->is_uintx()) return false; 629 uintx old_value = result->get_uintx(); 630 result->set_uintx(*value); 631 *value = old_value; 632 result->set_origin(origin); 633 return true; 634 } 635 636 void CommandLineFlagsEx::uintxAtPut(CommandLineFlagWithType flag, uintx value, Flag::Flags origin) { 637 Flag* faddr = address_of_flag(flag); 638 guarantee(faddr != NULL && faddr->is_uintx(), "wrong flag type"); 639 faddr->set_uintx(value); 640 faddr->set_origin(origin); 641 } 642 643 bool CommandLineFlags::uint64_tAt(char* name, size_t len, uint64_t* value) { 644 Flag* result = Flag::find_flag(name, len); 645 if (result == NULL) return false; 646 if (!result->is_uint64_t()) return false; 647 *value = result->get_uint64_t(); 648 return true; 649 } 650 651 bool CommandLineFlags::uint64_tAtPut(char* name, size_t len, uint64_t* value, Flag::Flags origin) { 652 Flag* result = Flag::find_flag(name, len); 653 if (result == NULL) return false; 654 if (!result->is_uint64_t()) return false; 655 uint64_t old_value = result->get_uint64_t(); 656 result->set_uint64_t(*value); 657 *value = old_value; 658 result->set_origin(origin); 659 return true; 660 } 661 662 void CommandLineFlagsEx::uint64_tAtPut(CommandLineFlagWithType flag, uint64_t value, Flag::Flags origin) { 663 Flag* faddr = address_of_flag(flag); 664 guarantee(faddr != NULL && faddr->is_uint64_t(), "wrong flag type"); 665 faddr->set_uint64_t(value); 666 faddr->set_origin(origin); 667 } 668 669 bool CommandLineFlags::doubleAt(char* name, size_t len, double* value) { 670 Flag* result = Flag::find_flag(name, len); 671 if (result == NULL) return false; 672 if (!result->is_double()) return false; 673 *value = result->get_double(); 674 return true; 675 } 676 677 bool CommandLineFlags::doubleAtPut(char* name, size_t len, double* value, Flag::Flags origin) { 678 Flag* result = Flag::find_flag(name, len); 679 if (result == NULL) return false; 680 if (!result->is_double()) return false; 681 double old_value = result->get_double(); 682 result->set_double(*value); 683 *value = old_value; 684 result->set_origin(origin); 685 return true; 686 } 687 688 void CommandLineFlagsEx::doubleAtPut(CommandLineFlagWithType flag, double value, Flag::Flags origin) { 689 Flag* faddr = address_of_flag(flag); 690 guarantee(faddr != NULL && faddr->is_double(), "wrong flag type"); 691 faddr->set_double(value); 692 faddr->set_origin(origin); 693 } 694 695 bool CommandLineFlags::ccstrAt(char* name, size_t len, ccstr* value) { 696 Flag* result = Flag::find_flag(name, len); 697 if (result == NULL) return false; 698 if (!result->is_ccstr()) return false; 699 *value = result->get_ccstr(); 700 return true; 701 } 702 703 // Contract: Flag will make private copy of the incoming value. 704 // Outgoing value is always malloc-ed, and caller MUST call free. 705 bool CommandLineFlags::ccstrAtPut(char* name, size_t len, ccstr* value, Flag::Flags origin) { 706 Flag* result = Flag::find_flag(name, len); 707 if (result == NULL) return false; 708 if (!result->is_ccstr()) return false; 709 ccstr old_value = result->get_ccstr(); 710 char* new_value = NULL; 711 if (*value != NULL) { 712 new_value = NEW_C_HEAP_ARRAY(char, strlen(*value)+1, mtInternal); 713 strcpy(new_value, *value); 714 } 715 result->set_ccstr(new_value); 716 if (result->is_default() && old_value != NULL) { 717 // Prior value is NOT heap allocated, but was a literal constant. 718 char* old_value_to_free = NEW_C_HEAP_ARRAY(char, strlen(old_value)+1, mtInternal); 719 strcpy(old_value_to_free, old_value); 720 old_value = old_value_to_free; 721 } 722 *value = old_value; 723 result->set_origin(origin); 724 return true; 725 } 726 727 // Contract: Flag will make private copy of the incoming value. 728 void CommandLineFlagsEx::ccstrAtPut(CommandLineFlagWithType flag, ccstr value, Flag::Flags origin) { 729 Flag* faddr = address_of_flag(flag); 730 guarantee(faddr != NULL && faddr->is_ccstr(), "wrong flag type"); 731 ccstr old_value = faddr->get_ccstr(); 732 char* new_value = NEW_C_HEAP_ARRAY(char, strlen(value)+1, mtInternal); 733 strcpy(new_value, value); 734 faddr->set_ccstr(new_value); 735 if (!faddr->is_default() && old_value != NULL) { 736 // Prior value is heap allocated so free it. 737 FREE_C_HEAP_ARRAY(char, old_value, mtInternal); 738 } 739 faddr->set_origin(origin); 740 } 741 742 extern "C" { 743 static int compare_flags(const void* void_a, const void* void_b) { 744 return strcmp((*((Flag**) void_a))->_name, (*((Flag**) void_b))->_name); 745 } 746 } 747 748 void CommandLineFlags::printSetFlags(outputStream* out) { 749 // Print which flags were set on the command line 750 // note: this method is called before the thread structure is in place 751 // which means resource allocation cannot be used. 752 753 // The last entry is the null entry. 754 const size_t length = Flag::numFlags - 1; 755 756 // Sort 757 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length, mtInternal); 758 for (size_t i = 0; i < length; i++) { 759 array[i] = &flagTable[i]; 760 } 761 qsort(array, length, sizeof(Flag*), compare_flags); 762 763 // Print 764 for (size_t i = 0; i < length; i++) { 765 if (array[i]->get_origin() /* naked field! */) { 766 array[i]->print_as_flag(out); 767 out->print(" "); 768 } 769 } 770 out->cr(); 771 FREE_C_HEAP_ARRAY(Flag*, array, mtInternal); 772 } 773 774 #ifndef PRODUCT 775 776 777 void CommandLineFlags::verify() { 778 assert(Arguments::check_vm_args_consistency(), "Some flag settings conflict"); 779 } 780 781 #endif // PRODUCT 782 783 void CommandLineFlags::printFlags(outputStream* out, bool withComments) { 784 // Print the flags sorted by name 785 // note: this method is called before the thread structure is in place 786 // which means resource allocation cannot be used. 787 788 // The last entry is the null entry. 789 const size_t length = Flag::numFlags - 1; 790 791 // Sort 792 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length, mtInternal); 793 for (size_t i = 0; i < length; i++) { 794 array[i] = &flagTable[i]; 795 } 796 qsort(array, length, sizeof(Flag*), compare_flags); 797 798 // Print 799 out->print_cr("[Global flags]"); 800 for (size_t i = 0; i < length; i++) { 801 if (array[i]->is_unlocked()) { 802 array[i]->print_on(out, withComments); 803 } 804 } 805 FREE_C_HEAP_ARRAY(Flag*, array, mtInternal); 806 }