1 /* 2 * Copyright (c) 1997, 2010, 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 "incls/_precompiled.incl" 26 # include "incls/_globals.cpp.incl" 27 28 29 RUNTIME_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PD_DEVELOPER_FLAG, \ 30 MATERIALIZE_PRODUCT_FLAG, MATERIALIZE_PD_PRODUCT_FLAG, \ 31 MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_EXPERIMENTAL_FLAG, \ 32 MATERIALIZE_NOTPRODUCT_FLAG, \ 33 MATERIALIZE_MANAGEABLE_FLAG, MATERIALIZE_PRODUCT_RW_FLAG, \ 34 MATERIALIZE_LP64_PRODUCT_FLAG) 35 36 RUNTIME_OS_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PD_DEVELOPER_FLAG, \ 37 MATERIALIZE_PRODUCT_FLAG, MATERIALIZE_PD_PRODUCT_FLAG, \ 38 MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_NOTPRODUCT_FLAG) 39 40 bool Flag::is_unlocker() const { 41 return strcmp(name, "UnlockDiagnosticVMOptions") == 0 || 42 strcmp(name, "UnlockExperimentalVMOptions") == 0; 43 44 } 45 46 bool Flag::is_unlocked() const { 47 if (strcmp(kind, "{diagnostic}") == 0) { 48 return UnlockDiagnosticVMOptions; 49 } else if (strcmp(kind, "{experimental}") == 0 || 50 strcmp(kind, "{C2 experimental}") == 0) { 51 return UnlockExperimentalVMOptions; 52 } else { 53 return true; 54 } 55 } 56 57 bool Flag::is_writeable() const { 58 return (strcmp(kind, "{manageable}") == 0 || strcmp(kind, "{product rw}") == 0); 59 } 60 61 // All flags except "manageable" are assumed internal flags. 62 // Long term, we need to define a mechanism to specify which flags 63 // are external/stable and change this function accordingly. 64 bool Flag::is_external() const { 65 return (strcmp(kind, "{manageable}") == 0); 66 } 67 68 // Length of format string (e.g. "%.1234s") for printing ccstr below 69 #define FORMAT_BUFFER_LEN 16 70 71 void Flag::print_on(outputStream* st, bool withComments) { 72 st->print("%9s %-40s %c= ", type, name, (origin != DEFAULT ? ':' : ' ')); 73 if (is_bool()) st->print("%-16s", get_bool() ? "true" : "false"); 74 if (is_intx()) st->print("%-16ld", get_intx()); 75 if (is_uintx()) st->print("%-16lu", get_uintx()); 76 if (is_uint64_t()) st->print("%-16lu", get_uint64_t()); 77 if (is_double()) st->print("%-16f", get_double()); 78 79 if (is_ccstr()) { 80 const char* cp = get_ccstr(); 81 if (cp != NULL) { 82 const char* eol; 83 while ((eol = strchr(cp, '\n')) != NULL) { 84 char format_buffer[FORMAT_BUFFER_LEN]; 85 size_t llen = pointer_delta(eol, cp, sizeof(char)); 86 jio_snprintf(format_buffer, FORMAT_BUFFER_LEN, 87 "%%." SIZE_FORMAT "s", llen); 88 st->print(format_buffer, cp); 89 st->cr(); 90 cp = eol+1; 91 st->print("%5s %-35s += ", "", name); 92 } 93 st->print("%-16s", cp); 94 } 95 else st->print("%-16s", ""); 96 } 97 st->print("%-20s", kind); 98 if (withComments) { 99 #ifndef PRODUCT 100 st->print("%s", doc ); 101 #endif 102 } 103 st->cr(); 104 } 105 106 void Flag::print_as_flag(outputStream* st) { 107 if (is_bool()) { 108 st->print("-XX:%s%s", get_bool() ? "+" : "-", name); 109 } else if (is_intx()) { 110 st->print("-XX:%s=" INTX_FORMAT, name, get_intx()); 111 } else if (is_uintx()) { 112 st->print("-XX:%s=" UINTX_FORMAT, name, get_uintx()); 113 } else if (is_uint64_t()) { 114 st->print("-XX:%s=" UINT64_FORMAT, name, get_uint64_t()); 115 } else if (is_ccstr()) { 116 st->print("-XX:%s=", name); 117 const char* cp = get_ccstr(); 118 if (cp != NULL) { 119 // Need to turn embedded '\n's back into separate arguments 120 // Not so efficient to print one character at a time, 121 // but the choice is to do the transformation to a buffer 122 // and print that. And this need not be efficient. 123 for (; *cp != '\0'; cp += 1) { 124 switch (*cp) { 125 default: 126 st->print("%c", *cp); 127 break; 128 case '\n': 129 st->print(" -XX:%s=", name); 130 break; 131 } 132 } 133 } 134 } else { 135 ShouldNotReachHere(); 136 } 137 } 138 139 // 4991491 do not "optimize out" the was_set false values: omitting them 140 // tickles a Microsoft compiler bug causing flagTable to be malformed 141 142 #define RUNTIME_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{product}", DEFAULT }, 143 #define RUNTIME_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{pd product}", DEFAULT }, 144 #define RUNTIME_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{diagnostic}", DEFAULT }, 145 #define RUNTIME_EXPERIMENTAL_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{experimental}", DEFAULT }, 146 #define RUNTIME_MANAGEABLE_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{manageable}", DEFAULT }, 147 #define RUNTIME_PRODUCT_RW_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{product rw}", DEFAULT }, 148 149 #ifdef PRODUCT 150 #define RUNTIME_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */ 151 #define RUNTIME_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */ 152 #define RUNTIME_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) 153 #else 154 #define RUNTIME_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "", DEFAULT }, 155 #define RUNTIME_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, doc, "{pd}", DEFAULT }, 156 #define RUNTIME_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{notproduct}", DEFAULT }, 157 #endif 158 159 #ifdef _LP64 160 #define RUNTIME_LP64_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{lp64_product}", DEFAULT }, 161 #else 162 #define RUNTIME_LP64_PRODUCT_FLAG_STRUCT(type, name, value, doc) /* flag is constant */ 163 #endif // _LP64 164 165 #define C1_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C1 product}", DEFAULT }, 166 #define C1_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C1 pd product}", DEFAULT }, 167 #ifdef PRODUCT 168 #define C1_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */ 169 #define C1_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */ 170 #define C1_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) 171 #else 172 #define C1_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{C1}", DEFAULT }, 173 #define C1_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, doc, "{C1 pd}", DEFAULT }, 174 #define C1_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{C1 notproduct}", DEFAULT }, 175 #endif 176 177 178 #define C2_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C2 product}", DEFAULT }, 179 #define C2_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C2 pd product}", DEFAULT }, 180 #define C2_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C2 diagnostic}", DEFAULT }, 181 #define C2_EXPERIMENTAL_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C2 experimental}", DEFAULT }, 182 #ifdef PRODUCT 183 #define C2_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */ 184 #define C2_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */ 185 #define C2_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) 186 #else 187 #define C2_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{C2}", DEFAULT }, 188 #define C2_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, doc, "{C2 pd}", DEFAULT }, 189 #define C2_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{C2 notproduct}", DEFAULT }, 190 #endif 191 192 #define SHARK_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{Shark product}", DEFAULT }, 193 #define SHARK_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{Shark pd product}", DEFAULT }, 194 #define SHARK_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{Shark diagnostic}", DEFAULT }, 195 #ifdef PRODUCT 196 #define SHARK_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */ 197 #define SHARK_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */ 198 #define SHARK_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) 199 #else 200 #define SHARK_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{Shark}", DEFAULT }, 201 #define SHARK_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, doc, "{Shark pd}", DEFAULT }, 202 #define SHARK_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{Shark notproduct}", DEFAULT }, 203 #endif 204 205 static Flag flagTable[] = { 206 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) 207 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) 208 #ifndef SERIALGC 209 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) 210 #endif // SERIALGC 211 #ifdef COMPILER1 212 C1_FLAGS(C1_DEVELOP_FLAG_STRUCT, C1_PD_DEVELOP_FLAG_STRUCT, C1_PRODUCT_FLAG_STRUCT, C1_PD_PRODUCT_FLAG_STRUCT, C1_NOTPRODUCT_FLAG_STRUCT) 213 #endif 214 #ifdef COMPILER2 215 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) 216 #endif 217 #ifdef SHARK 218 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) 219 #endif 220 {0, NULL, NULL} 221 }; 222 223 Flag* Flag::flags = flagTable; 224 size_t Flag::numFlags = (sizeof(flagTable) / sizeof(Flag)); 225 226 inline bool str_equal(const char* s, char* q, size_t len) { 227 // s is null terminated, q is not! 228 if (strlen(s) != (unsigned int) len) return false; 229 return strncmp(s, q, len) == 0; 230 } 231 232 Flag* Flag::find_flag(char* name, size_t length) { 233 for (Flag* current = &flagTable[0]; current->name; current++) { 234 if (str_equal(current->name, name, length)) { 235 if (!(current->is_unlocked() || current->is_unlocker())) { 236 // disable use of diagnostic or experimental flags until they 237 // are explicitly unlocked 238 return NULL; 239 } 240 return current; 241 } 242 } 243 return NULL; 244 } 245 246 // Returns the address of the index'th element 247 static Flag* address_of_flag(CommandLineFlagWithType flag) { 248 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); 249 return &Flag::flags[flag]; 250 } 251 252 bool CommandLineFlagsEx::is_default(CommandLineFlag flag) { 253 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); 254 Flag* f = &Flag::flags[flag]; 255 return (f->origin == DEFAULT); 256 } 257 258 bool CommandLineFlagsEx::is_ergo(CommandLineFlag flag) { 259 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); 260 Flag* f = &Flag::flags[flag]; 261 return (f->origin == ERGONOMIC); 262 } 263 264 bool CommandLineFlagsEx::is_cmdline(CommandLineFlag flag) { 265 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); 266 Flag* f = &Flag::flags[flag]; 267 return (f->origin == COMMAND_LINE); 268 } 269 270 bool CommandLineFlags::wasSetOnCmdline(const char* name, bool* value) { 271 Flag* result = Flag::find_flag((char*)name, strlen(name)); 272 if (result == NULL) return false; 273 *value = (result->origin == COMMAND_LINE); 274 return true; 275 } 276 277 bool CommandLineFlags::boolAt(char* name, size_t len, bool* value) { 278 Flag* result = Flag::find_flag(name, len); 279 if (result == NULL) return false; 280 if (!result->is_bool()) return false; 281 *value = result->get_bool(); 282 return true; 283 } 284 285 bool CommandLineFlags::boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin) { 286 Flag* result = Flag::find_flag(name, len); 287 if (result == NULL) return false; 288 if (!result->is_bool()) return false; 289 bool old_value = result->get_bool(); 290 result->set_bool(*value); 291 *value = old_value; 292 result->origin = origin; 293 return true; 294 } 295 296 void CommandLineFlagsEx::boolAtPut(CommandLineFlagWithType flag, bool value, FlagValueOrigin origin) { 297 Flag* faddr = address_of_flag(flag); 298 guarantee(faddr != NULL && faddr->is_bool(), "wrong flag type"); 299 faddr->set_bool(value); 300 faddr->origin = origin; 301 } 302 303 bool CommandLineFlags::intxAt(char* name, size_t len, intx* value) { 304 Flag* result = Flag::find_flag(name, len); 305 if (result == NULL) return false; 306 if (!result->is_intx()) return false; 307 *value = result->get_intx(); 308 return true; 309 } 310 311 bool CommandLineFlags::intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin) { 312 Flag* result = Flag::find_flag(name, len); 313 if (result == NULL) return false; 314 if (!result->is_intx()) return false; 315 intx old_value = result->get_intx(); 316 result->set_intx(*value); 317 *value = old_value; 318 result->origin = origin; 319 return true; 320 } 321 322 void CommandLineFlagsEx::intxAtPut(CommandLineFlagWithType flag, intx value, FlagValueOrigin origin) { 323 Flag* faddr = address_of_flag(flag); 324 guarantee(faddr != NULL && faddr->is_intx(), "wrong flag type"); 325 faddr->set_intx(value); 326 faddr->origin = origin; 327 } 328 329 bool CommandLineFlags::uintxAt(char* name, size_t len, uintx* value) { 330 Flag* result = Flag::find_flag(name, len); 331 if (result == NULL) return false; 332 if (!result->is_uintx()) return false; 333 *value = result->get_uintx(); 334 return true; 335 } 336 337 bool CommandLineFlags::uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin) { 338 Flag* result = Flag::find_flag(name, len); 339 if (result == NULL) return false; 340 if (!result->is_uintx()) return false; 341 uintx old_value = result->get_uintx(); 342 result->set_uintx(*value); 343 *value = old_value; 344 result->origin = origin; 345 return true; 346 } 347 348 void CommandLineFlagsEx::uintxAtPut(CommandLineFlagWithType flag, uintx value, FlagValueOrigin origin) { 349 Flag* faddr = address_of_flag(flag); 350 guarantee(faddr != NULL && faddr->is_uintx(), "wrong flag type"); 351 faddr->set_uintx(value); 352 faddr->origin = origin; 353 } 354 355 bool CommandLineFlags::uint64_tAt(char* name, size_t len, uint64_t* value) { 356 Flag* result = Flag::find_flag(name, len); 357 if (result == NULL) return false; 358 if (!result->is_uint64_t()) return false; 359 *value = result->get_uint64_t(); 360 return true; 361 } 362 363 bool CommandLineFlags::uint64_tAtPut(char* name, size_t len, uint64_t* value, FlagValueOrigin origin) { 364 Flag* result = Flag::find_flag(name, len); 365 if (result == NULL) return false; 366 if (!result->is_uint64_t()) return false; 367 uint64_t old_value = result->get_uint64_t(); 368 result->set_uint64_t(*value); 369 *value = old_value; 370 result->origin = origin; 371 return true; 372 } 373 374 void CommandLineFlagsEx::uint64_tAtPut(CommandLineFlagWithType flag, uint64_t value, FlagValueOrigin origin) { 375 Flag* faddr = address_of_flag(flag); 376 guarantee(faddr != NULL && faddr->is_uint64_t(), "wrong flag type"); 377 faddr->set_uint64_t(value); 378 faddr->origin = origin; 379 } 380 381 bool CommandLineFlags::doubleAt(char* name, size_t len, double* value) { 382 Flag* result = Flag::find_flag(name, len); 383 if (result == NULL) return false; 384 if (!result->is_double()) return false; 385 *value = result->get_double(); 386 return true; 387 } 388 389 bool CommandLineFlags::doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin) { 390 Flag* result = Flag::find_flag(name, len); 391 if (result == NULL) return false; 392 if (!result->is_double()) return false; 393 double old_value = result->get_double(); 394 result->set_double(*value); 395 *value = old_value; 396 result->origin = origin; 397 return true; 398 } 399 400 void CommandLineFlagsEx::doubleAtPut(CommandLineFlagWithType flag, double value, FlagValueOrigin origin) { 401 Flag* faddr = address_of_flag(flag); 402 guarantee(faddr != NULL && faddr->is_double(), "wrong flag type"); 403 faddr->set_double(value); 404 faddr->origin = origin; 405 } 406 407 bool CommandLineFlags::ccstrAt(char* name, size_t len, ccstr* value) { 408 Flag* result = Flag::find_flag(name, len); 409 if (result == NULL) return false; 410 if (!result->is_ccstr()) return false; 411 *value = result->get_ccstr(); 412 return true; 413 } 414 415 // Contract: Flag will make private copy of the incoming value. 416 // Outgoing value is always malloc-ed, and caller MUST call free. 417 bool CommandLineFlags::ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin) { 418 Flag* result = Flag::find_flag(name, len); 419 if (result == NULL) return false; 420 if (!result->is_ccstr()) return false; 421 ccstr old_value = result->get_ccstr(); 422 char* new_value = NULL; 423 if (*value != NULL) { 424 new_value = NEW_C_HEAP_ARRAY(char, strlen(*value)+1); 425 strcpy(new_value, *value); 426 } 427 result->set_ccstr(new_value); 428 if (result->origin == DEFAULT && old_value != NULL) { 429 // Prior value is NOT heap allocated, but was a literal constant. 430 char* old_value_to_free = NEW_C_HEAP_ARRAY(char, strlen(old_value)+1); 431 strcpy(old_value_to_free, old_value); 432 old_value = old_value_to_free; 433 } 434 *value = old_value; 435 result->origin = origin; 436 return true; 437 } 438 439 // Contract: Flag will make private copy of the incoming value. 440 void CommandLineFlagsEx::ccstrAtPut(CommandLineFlagWithType flag, ccstr value, FlagValueOrigin origin) { 441 Flag* faddr = address_of_flag(flag); 442 guarantee(faddr != NULL && faddr->is_ccstr(), "wrong flag type"); 443 ccstr old_value = faddr->get_ccstr(); 444 char* new_value = NEW_C_HEAP_ARRAY(char, strlen(value)+1); 445 strcpy(new_value, value); 446 faddr->set_ccstr(new_value); 447 if (faddr->origin != DEFAULT && old_value != NULL) { 448 // Prior value is heap allocated so free it. 449 FREE_C_HEAP_ARRAY(char, old_value); 450 } 451 faddr->origin = origin; 452 } 453 454 extern "C" { 455 static int compare_flags(const void* void_a, const void* void_b) { 456 return strcmp((*((Flag**) void_a))->name, (*((Flag**) void_b))->name); 457 } 458 } 459 460 void CommandLineFlags::printSetFlags() { 461 // Print which flags were set on the command line 462 // note: this method is called before the thread structure is in place 463 // which means resource allocation cannot be used. 464 465 // Compute size 466 int length= 0; 467 while (flagTable[length].name != NULL) length++; 468 469 // Sort 470 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length); 471 for (int index = 0; index < length; index++) { 472 array[index] = &flagTable[index]; 473 } 474 qsort(array, length, sizeof(Flag*), compare_flags); 475 476 // Print 477 for (int i = 0; i < length; i++) { 478 if (array[i]->origin /* naked field! */) { 479 array[i]->print_as_flag(tty); 480 tty->print(" "); 481 } 482 } 483 tty->cr(); 484 FREE_C_HEAP_ARRAY(Flag*, array); 485 } 486 487 #ifndef PRODUCT 488 489 490 void CommandLineFlags::verify() { 491 assert(Arguments::check_vm_args_consistency(), "Some flag settings conflict"); 492 } 493 494 #endif // PRODUCT 495 496 void CommandLineFlags::printFlags(bool withComments) { 497 // Print the flags sorted by name 498 // note: this method is called before the thread structure is in place 499 // which means resource allocation cannot be used. 500 501 // Compute size 502 int length= 0; 503 while (flagTable[length].name != NULL) length++; 504 505 // Sort 506 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length); 507 for (int index = 0; index < length; index++) { 508 array[index] = &flagTable[index]; 509 } 510 qsort(array, length, sizeof(Flag*), compare_flags); 511 512 // Print 513 tty->print_cr("[Global flags]"); 514 for (int i = 0; i < length; i++) { 515 if (array[i]->is_unlocked()) { 516 array[i]->print_on(tty, withComments); 517 } 518 } 519 FREE_C_HEAP_ARRAY(Flag*, array); 520 }