globals.cpp revision 1472:c18cbe5936b8
1/* 2 * Copyright (c) 1997, 2008, 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 29RUNTIME_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 36RUNTIME_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 40bool Flag::is_unlocker() const { 41 return strcmp(name, "UnlockDiagnosticVMOptions") == 0 || 42 strcmp(name, "UnlockExperimentalVMOptions") == 0; 43 44} 45 46bool 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 57bool 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. 64bool 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 71void Flag::print_on(outputStream* st) { 72 st->print("%5s %-35s %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_ccstr()) { 78 const char* cp = get_ccstr(); 79 if (cp != NULL) { 80 const char* eol; 81 while ((eol = strchr(cp, '\n')) != NULL) { 82 char format_buffer[FORMAT_BUFFER_LEN]; 83 size_t llen = pointer_delta(eol, cp, sizeof(char)); 84 jio_snprintf(format_buffer, FORMAT_BUFFER_LEN, 85 "%%." SIZE_FORMAT "s", llen); 86 st->print(format_buffer, cp); 87 st->cr(); 88 cp = eol+1; 89 st->print("%5s %-35s += ", "", name); 90 } 91 st->print("%-16s", cp); 92 } 93 } 94 st->print(" %s", kind); 95 st->cr(); 96} 97 98void Flag::print_as_flag(outputStream* st) { 99 if (is_bool()) { 100 st->print("-XX:%s%s", get_bool() ? "+" : "-", name); 101 } else if (is_intx()) { 102 st->print("-XX:%s=" INTX_FORMAT, name, get_intx()); 103 } else if (is_uintx()) { 104 st->print("-XX:%s=" UINTX_FORMAT, name, get_uintx()); 105 } else if (is_uint64_t()) { 106 st->print("-XX:%s=" UINT64_FORMAT, name, get_uint64_t()); 107 } else if (is_ccstr()) { 108 st->print("-XX:%s=", name); 109 const char* cp = get_ccstr(); 110 if (cp != NULL) { 111 // Need to turn embedded '\n's back into separate arguments 112 // Not so efficient to print one character at a time, 113 // but the choice is to do the transformation to a buffer 114 // and print that. And this need not be efficient. 115 for (; *cp != '\0'; cp += 1) { 116 switch (*cp) { 117 default: 118 st->print("%c", *cp); 119 break; 120 case '\n': 121 st->print(" -XX:%s=", name); 122 break; 123 } 124 } 125 } 126 } else { 127 ShouldNotReachHere(); 128 } 129} 130 131// 4991491 do not "optimize out" the was_set false values: omitting them 132// tickles a Microsoft compiler bug causing flagTable to be malformed 133 134#define RUNTIME_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{product}", DEFAULT }, 135#define RUNTIME_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{pd product}", DEFAULT }, 136#define RUNTIME_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{diagnostic}", DEFAULT }, 137#define RUNTIME_EXPERIMENTAL_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{experimental}", DEFAULT }, 138#define RUNTIME_MANAGEABLE_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{manageable}", DEFAULT }, 139#define RUNTIME_PRODUCT_RW_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{product rw}", DEFAULT }, 140 141#ifdef PRODUCT 142 #define RUNTIME_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */ 143 #define RUNTIME_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */ 144 #define RUNTIME_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) 145#else 146 #define RUNTIME_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "", DEFAULT }, 147 #define RUNTIME_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{pd}", DEFAULT }, 148 #define RUNTIME_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{notproduct}", DEFAULT }, 149#endif 150 151#ifdef _LP64 152 #define RUNTIME_LP64_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{lp64_product}", DEFAULT }, 153#else 154 #define RUNTIME_LP64_PRODUCT_FLAG_STRUCT(type, name, value, doc) /* flag is constant */ 155#endif // _LP64 156 157#define C1_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C1 product}", DEFAULT }, 158#define C1_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{C1 pd product}", DEFAULT }, 159#ifdef PRODUCT 160 #define C1_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */ 161 #define C1_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */ 162 #define C1_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) 163#else 164 #define C1_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C1}", DEFAULT }, 165 #define C1_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{C1 pd}", DEFAULT }, 166 #define C1_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C1 notproduct}", DEFAULT }, 167#endif 168 169 170#define C2_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C2 product}", DEFAULT }, 171#define C2_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{C2 pd product}", DEFAULT }, 172#define C2_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C2 diagnostic}", DEFAULT }, 173#define C2_EXPERIMENTAL_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C2 experimental}", DEFAULT }, 174#ifdef PRODUCT 175 #define C2_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */ 176 #define C2_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */ 177 #define C2_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) 178#else 179 #define C2_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C2}", DEFAULT }, 180 #define C2_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, "{C2 pd}", DEFAULT }, 181 #define C2_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, "{C2 notproduct}", DEFAULT }, 182#endif 183 184 185static Flag flagTable[] = { 186 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) 187 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) 188#ifndef SERIALGC 189 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) 190#endif // SERIALGC 191#ifdef COMPILER1 192 C1_FLAGS(C1_DEVELOP_FLAG_STRUCT, C1_PD_DEVELOP_FLAG_STRUCT, C1_PRODUCT_FLAG_STRUCT, C1_PD_PRODUCT_FLAG_STRUCT, C1_NOTPRODUCT_FLAG_STRUCT) 193#endif 194#ifdef COMPILER2 195 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) 196#endif 197 {0, NULL, NULL} 198}; 199 200Flag* Flag::flags = flagTable; 201size_t Flag::numFlags = (sizeof(flagTable) / sizeof(Flag)); 202 203inline bool str_equal(const char* s, char* q, size_t len) { 204 // s is null terminated, q is not! 205 if (strlen(s) != (unsigned int) len) return false; 206 return strncmp(s, q, len) == 0; 207} 208 209Flag* Flag::find_flag(char* name, size_t length) { 210 for (Flag* current = &flagTable[0]; current->name; current++) { 211 if (str_equal(current->name, name, length)) { 212 if (!(current->is_unlocked() || current->is_unlocker())) { 213 // disable use of diagnostic or experimental flags until they 214 // are explicitly unlocked 215 return NULL; 216 } 217 return current; 218 } 219 } 220 return NULL; 221} 222 223// Returns the address of the index'th element 224static Flag* address_of_flag(CommandLineFlagWithType flag) { 225 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); 226 return &Flag::flags[flag]; 227} 228 229bool CommandLineFlagsEx::is_default(CommandLineFlag flag) { 230 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); 231 Flag* f = &Flag::flags[flag]; 232 return (f->origin == DEFAULT); 233} 234 235bool CommandLineFlagsEx::is_ergo(CommandLineFlag flag) { 236 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); 237 Flag* f = &Flag::flags[flag]; 238 return (f->origin == ERGONOMIC); 239} 240 241bool CommandLineFlagsEx::is_cmdline(CommandLineFlag flag) { 242 assert((size_t)flag < Flag::numFlags, "bad command line flag index"); 243 Flag* f = &Flag::flags[flag]; 244 return (f->origin == COMMAND_LINE); 245} 246 247bool CommandLineFlags::wasSetOnCmdline(const char* name, bool* value) { 248 Flag* result = Flag::find_flag((char*)name, strlen(name)); 249 if (result == NULL) return false; 250 *value = (result->origin == COMMAND_LINE); 251 return true; 252} 253 254bool CommandLineFlags::boolAt(char* name, size_t len, bool* value) { 255 Flag* result = Flag::find_flag(name, len); 256 if (result == NULL) return false; 257 if (!result->is_bool()) return false; 258 *value = result->get_bool(); 259 return true; 260} 261 262bool CommandLineFlags::boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin) { 263 Flag* result = Flag::find_flag(name, len); 264 if (result == NULL) return false; 265 if (!result->is_bool()) return false; 266 bool old_value = result->get_bool(); 267 result->set_bool(*value); 268 *value = old_value; 269 result->origin = origin; 270 return true; 271} 272 273void CommandLineFlagsEx::boolAtPut(CommandLineFlagWithType flag, bool value, FlagValueOrigin origin) { 274 Flag* faddr = address_of_flag(flag); 275 guarantee(faddr != NULL && faddr->is_bool(), "wrong flag type"); 276 faddr->set_bool(value); 277 faddr->origin = origin; 278} 279 280bool CommandLineFlags::intxAt(char* name, size_t len, intx* value) { 281 Flag* result = Flag::find_flag(name, len); 282 if (result == NULL) return false; 283 if (!result->is_intx()) return false; 284 *value = result->get_intx(); 285 return true; 286} 287 288bool CommandLineFlags::intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin) { 289 Flag* result = Flag::find_flag(name, len); 290 if (result == NULL) return false; 291 if (!result->is_intx()) return false; 292 intx old_value = result->get_intx(); 293 result->set_intx(*value); 294 *value = old_value; 295 result->origin = origin; 296 return true; 297} 298 299void CommandLineFlagsEx::intxAtPut(CommandLineFlagWithType flag, intx value, FlagValueOrigin origin) { 300 Flag* faddr = address_of_flag(flag); 301 guarantee(faddr != NULL && faddr->is_intx(), "wrong flag type"); 302 faddr->set_intx(value); 303 faddr->origin = origin; 304} 305 306bool CommandLineFlags::uintxAt(char* name, size_t len, uintx* value) { 307 Flag* result = Flag::find_flag(name, len); 308 if (result == NULL) return false; 309 if (!result->is_uintx()) return false; 310 *value = result->get_uintx(); 311 return true; 312} 313 314bool CommandLineFlags::uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin) { 315 Flag* result = Flag::find_flag(name, len); 316 if (result == NULL) return false; 317 if (!result->is_uintx()) return false; 318 uintx old_value = result->get_uintx(); 319 result->set_uintx(*value); 320 *value = old_value; 321 result->origin = origin; 322 return true; 323} 324 325void CommandLineFlagsEx::uintxAtPut(CommandLineFlagWithType flag, uintx value, FlagValueOrigin origin) { 326 Flag* faddr = address_of_flag(flag); 327 guarantee(faddr != NULL && faddr->is_uintx(), "wrong flag type"); 328 faddr->set_uintx(value); 329 faddr->origin = origin; 330} 331 332bool CommandLineFlags::uint64_tAt(char* name, size_t len, uint64_t* value) { 333 Flag* result = Flag::find_flag(name, len); 334 if (result == NULL) return false; 335 if (!result->is_uint64_t()) return false; 336 *value = result->get_uint64_t(); 337 return true; 338} 339 340bool CommandLineFlags::uint64_tAtPut(char* name, size_t len, uint64_t* value, FlagValueOrigin origin) { 341 Flag* result = Flag::find_flag(name, len); 342 if (result == NULL) return false; 343 if (!result->is_uint64_t()) return false; 344 uint64_t old_value = result->get_uint64_t(); 345 result->set_uint64_t(*value); 346 *value = old_value; 347 result->origin = origin; 348 return true; 349} 350 351void CommandLineFlagsEx::uint64_tAtPut(CommandLineFlagWithType flag, uint64_t value, FlagValueOrigin origin) { 352 Flag* faddr = address_of_flag(flag); 353 guarantee(faddr != NULL && faddr->is_uint64_t(), "wrong flag type"); 354 faddr->set_uint64_t(value); 355 faddr->origin = origin; 356} 357 358bool CommandLineFlags::doubleAt(char* name, size_t len, double* value) { 359 Flag* result = Flag::find_flag(name, len); 360 if (result == NULL) return false; 361 if (!result->is_double()) return false; 362 *value = result->get_double(); 363 return true; 364} 365 366bool CommandLineFlags::doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin) { 367 Flag* result = Flag::find_flag(name, len); 368 if (result == NULL) return false; 369 if (!result->is_double()) return false; 370 double old_value = result->get_double(); 371 result->set_double(*value); 372 *value = old_value; 373 result->origin = origin; 374 return true; 375} 376 377void CommandLineFlagsEx::doubleAtPut(CommandLineFlagWithType flag, double value, FlagValueOrigin origin) { 378 Flag* faddr = address_of_flag(flag); 379 guarantee(faddr != NULL && faddr->is_double(), "wrong flag type"); 380 faddr->set_double(value); 381 faddr->origin = origin; 382} 383 384bool CommandLineFlags::ccstrAt(char* name, size_t len, ccstr* value) { 385 Flag* result = Flag::find_flag(name, len); 386 if (result == NULL) return false; 387 if (!result->is_ccstr()) return false; 388 *value = result->get_ccstr(); 389 return true; 390} 391 392// Contract: Flag will make private copy of the incoming value. 393// Outgoing value is always malloc-ed, and caller MUST call free. 394bool CommandLineFlags::ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin) { 395 Flag* result = Flag::find_flag(name, len); 396 if (result == NULL) return false; 397 if (!result->is_ccstr()) return false; 398 ccstr old_value = result->get_ccstr(); 399 char* new_value = NULL; 400 if (*value != NULL) { 401 new_value = NEW_C_HEAP_ARRAY(char, strlen(*value)+1); 402 strcpy(new_value, *value); 403 } 404 result->set_ccstr(new_value); 405 if (result->origin == DEFAULT && old_value != NULL) { 406 // Prior value is NOT heap allocated, but was a literal constant. 407 char* old_value_to_free = NEW_C_HEAP_ARRAY(char, strlen(old_value)+1); 408 strcpy(old_value_to_free, old_value); 409 old_value = old_value_to_free; 410 } 411 *value = old_value; 412 result->origin = origin; 413 return true; 414} 415 416// Contract: Flag will make private copy of the incoming value. 417void CommandLineFlagsEx::ccstrAtPut(CommandLineFlagWithType flag, ccstr value, FlagValueOrigin origin) { 418 Flag* faddr = address_of_flag(flag); 419 guarantee(faddr != NULL && faddr->is_ccstr(), "wrong flag type"); 420 ccstr old_value = faddr->get_ccstr(); 421 char* new_value = NEW_C_HEAP_ARRAY(char, strlen(value)+1); 422 strcpy(new_value, value); 423 faddr->set_ccstr(new_value); 424 if (faddr->origin != DEFAULT && old_value != NULL) { 425 // Prior value is heap allocated so free it. 426 FREE_C_HEAP_ARRAY(char, old_value); 427 } 428 faddr->origin = origin; 429} 430 431extern "C" { 432 static int compare_flags(const void* void_a, const void* void_b) { 433 return strcmp((*((Flag**) void_a))->name, (*((Flag**) void_b))->name); 434 } 435} 436 437void CommandLineFlags::printSetFlags() { 438 // Print which flags were set on the command line 439 // note: this method is called before the thread structure is in place 440 // which means resource allocation cannot be used. 441 442 // Compute size 443 int length= 0; 444 while (flagTable[length].name != NULL) length++; 445 446 // Sort 447 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length); 448 for (int index = 0; index < length; index++) { 449 array[index] = &flagTable[index]; 450 } 451 qsort(array, length, sizeof(Flag*), compare_flags); 452 453 // Print 454 for (int i = 0; i < length; i++) { 455 if (array[i]->origin /* naked field! */) { 456 array[i]->print_as_flag(tty); 457 tty->print(" "); 458 } 459 } 460 tty->cr(); 461 FREE_C_HEAP_ARRAY(Flag*, array); 462} 463 464#ifndef PRODUCT 465 466 467void CommandLineFlags::verify() { 468 assert(Arguments::check_vm_args_consistency(), "Some flag settings conflict"); 469} 470 471#endif // PRODUCT 472 473void CommandLineFlags::printFlags() { 474 // Print the flags sorted by name 475 // note: this method is called before the thread structure is in place 476 // which means resource allocation cannot be used. 477 478 // Compute size 479 int length= 0; 480 while (flagTable[length].name != NULL) length++; 481 482 // Sort 483 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length); 484 for (int index = 0; index < length; index++) { 485 array[index] = &flagTable[index]; 486 } 487 qsort(array, length, sizeof(Flag*), compare_flags); 488 489 // Print 490 tty->print_cr("[Global flags]"); 491 for (int i = 0; i < length; i++) { 492 if (array[i]->is_unlocked()) { 493 array[i]->print_on(tty); 494 } 495 } 496 FREE_C_HEAP_ARRAY(Flag*, array); 497} 498