1 /*
2 * Copyright (c) 1997, 2016, 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/commandLineFlagWriteableList.hpp"
33 #include "runtime/commandLineFlagRangeList.hpp"
34 #include "runtime/os.hpp"
35 #include "runtime/sharedRuntime.hpp"
36 #include "trace/tracing.hpp"
37 #include "utilities/defaultStream.hpp"
38 #include "utilities/macros.hpp"
39 #include "utilities/ostream.hpp"
40 #if INCLUDE_ALL_GCS
41 #include "gc/g1/g1_globals.hpp"
42 #endif // INCLUDE_ALL_GCS
43 #ifdef COMPILER1
44 #include "c1/c1_globals.hpp"
45 #endif
46 #if INCLUDE_JVMCI
47 #include "jvmci/jvmci_globals.hpp"
48 #endif
49 #ifdef COMPILER2
50 #include "opto/c2_globals.hpp"
51 #endif
52 #ifdef SHARK
53 #include "shark/shark_globals.hpp"
54 #endif
55
56 RUNTIME_FLAGS(MATERIALIZE_DEVELOPER_FLAG, \
57 MATERIALIZE_PD_DEVELOPER_FLAG, \
58 MATERIALIZE_PRODUCT_FLAG, \
59 MATERIALIZE_PD_PRODUCT_FLAG, \
60 MATERIALIZE_DIAGNOSTIC_FLAG, \
61 MATERIALIZE_PD_DIAGNOSTIC_FLAG, \
62 MATERIALIZE_EXPERIMENTAL_FLAG, \
63 MATERIALIZE_NOTPRODUCT_FLAG, \
64 MATERIALIZE_MANAGEABLE_FLAG, \
65 MATERIALIZE_PRODUCT_RW_FLAG, \
66 MATERIALIZE_LP64_PRODUCT_FLAG, \
67 IGNORE_RANGE, \
68 IGNORE_CONSTRAINT, \
69 IGNORE_WRITEABLE)
70
71 RUNTIME_OS_FLAGS(MATERIALIZE_DEVELOPER_FLAG, \
72 MATERIALIZE_PD_DEVELOPER_FLAG, \
73 MATERIALIZE_PRODUCT_FLAG, \
74 MATERIALIZE_PD_PRODUCT_FLAG, \
75 MATERIALIZE_DIAGNOSTIC_FLAG, \
76 MATERIALIZE_PD_DIAGNOSTIC_FLAG, \
77 MATERIALIZE_NOTPRODUCT_FLAG, \
78 IGNORE_RANGE, \
79 IGNORE_CONSTRAINT, \
80 IGNORE_WRITEABLE)
81
82 ARCH_FLAGS(MATERIALIZE_DEVELOPER_FLAG, \
83 MATERIALIZE_PRODUCT_FLAG, \
84 MATERIALIZE_DIAGNOSTIC_FLAG, \
85 MATERIALIZE_EXPERIMENTAL_FLAG, \
86 MATERIALIZE_NOTPRODUCT_FLAG, \
87 IGNORE_RANGE, \
88 IGNORE_CONSTRAINT, \
89 IGNORE_WRITEABLE)
90
91 MATERIALIZE_FLAGS_EXT
92
93 #define DEFAULT_RANGE_STR_CHUNK_SIZE 64
94 static char* create_range_str(const char *fmt, ...) {
95 static size_t string_length = DEFAULT_RANGE_STR_CHUNK_SIZE;
96 static char* range_string = NEW_C_HEAP_ARRAY(char, string_length, mtLogging);
97
98 int size_needed = 0;
99 do {
100 va_list args;
101 va_start(args, fmt);
102 size_needed = jio_vsnprintf(range_string, string_length, fmt, args);
103 va_end(args);
104
105 if (size_needed < 0) {
106 string_length += DEFAULT_RANGE_STR_CHUNK_SIZE;
107 range_string = REALLOC_C_HEAP_ARRAY(char, range_string, string_length, mtLogging);
108 guarantee(range_string != NULL, "create_range_str string should not be NULL");
109 }
110 } while (size_needed < 0);
111
112 return range_string;
113 }
114
115 const char* Flag::get_int_default_range_str() {
116 return create_range_str("[ " INT32_FORMAT_W(-25) " ... " INT32_FORMAT_W(25) " ]", INT_MIN, INT_MAX);
117 }
118
119 const char* Flag::get_uint_default_range_str() {
120 return create_range_str("[ " UINT32_FORMAT_W(-25) " ... " UINT32_FORMAT_W(25) " ]", 0, UINT_MAX);
121 }
122
123 const char* Flag::get_intx_default_range_str() {
124 return create_range_str("[ " INTX_FORMAT_W(-25) " ... " INTX_FORMAT_W(25) " ]", min_intx, max_intx);
125 }
126
127 const char* Flag::get_uintx_default_range_str() {
128 return create_range_str("[ " UINTX_FORMAT_W(-25) " ... " UINTX_FORMAT_W(25) " ]", 0, max_uintx);
129 }
130
131 const char* Flag::get_uint64_t_default_range_str() {
132 return create_range_str("[ " UINT64_FORMAT_W(-25) " ... " UINT64_FORMAT_W(25) " ]", 0, uint64_t(max_juint));
133 }
134
135 const char* Flag::get_size_t_default_range_str() {
136 return create_range_str("[ " SIZE_FORMAT_W(-25) " ... " SIZE_FORMAT_W(25) " ]", 0, SIZE_MAX);
137 }
138
139 const char* Flag::get_double_default_range_str() {
140 return create_range_str("[ %-25.3f ... %25.3f ]", DBL_MIN, DBL_MAX);
141 }
142
143 static bool is_product_build() {
144 #ifdef PRODUCT
145 return true;
146 #else
147 return false;
148 #endif
149 }
150
151 Flag::Error Flag::check_writable(bool changed) {
152 if (is_constant_in_binary()) {
153 fatal("flag is constant: %s", _name);
154 }
155
156 Flag::Error error = Flag::SUCCESS;
157 if (changed) {
158 CommandLineFlagWriteable* writeable = CommandLineFlagWriteableList::find(_name);
159 if (writeable) {
160 if (writeable->is_writeable() == false) {
161 switch (writeable->type())
162 {
163 case CommandLineFlagWriteable::Once:
164 error = Flag::SET_ONLY_ONCE;
165 jio_fprintf(defaultStream::error_stream(), "Error: %s may not be set more than once\n", _name);
166 break;
167 case CommandLineFlagWriteable::CommandLineOnly:
168 error = Flag::COMMAND_LINE_ONLY;
169 jio_fprintf(defaultStream::error_stream(), "Error: %s may be modified only from commad line\n", _name);
170 break;
171 default:
172 ShouldNotReachHere();
173 break;
174 }
175 }
176 writeable->mark_once();
177 }
178 }
179 return error;
180 }
181
182 bool Flag::is_bool() const {
183 return strcmp(_type, "bool") == 0;
184 }
185
186 bool Flag::get_bool() const {
187 return *((bool*) _addr);
188 }
189
190 Flag::Error Flag::set_bool(bool value) {
191 Flag::Error error = check_writable(value!=get_bool());
192 if (error == Flag::SUCCESS) {
193 *((bool*) _addr) = value;
194 }
195 return error;
196 }
197
198 bool Flag::is_int() const {
199 return strcmp(_type, "int") == 0;
200 }
201
202 int Flag::get_int() const {
203 return *((int*) _addr);
204 }
205
206 Flag::Error Flag::set_int(int value) {
207 Flag::Error error = check_writable(value!=get_int());
208 if (error == Flag::SUCCESS) {
209 *((int*) _addr) = value;
210 }
211 return error;
212 }
213
214 bool Flag::is_uint() const {
215 return strcmp(_type, "uint") == 0;
216 }
217
218 uint Flag::get_uint() const {
219 return *((uint*) _addr);
220 }
221
222 Flag::Error Flag::set_uint(uint value) {
223 Flag::Error error = check_writable(value!=get_uint());
224 if (error == Flag::SUCCESS) {
225 *((uint*) _addr) = value;
226 }
227 return error;
228 }
229
230 bool Flag::is_intx() const {
231 return strcmp(_type, "intx") == 0;
232 }
233
234 intx Flag::get_intx() const {
235 return *((intx*) _addr);
236 }
237
238 Flag::Error Flag::set_intx(intx value) {
239 Flag::Error error = check_writable(value!=get_intx());
240 if (error == Flag::SUCCESS) {
241 *((intx*) _addr) = value;
242 }
243 return error;
244 }
245
246 bool Flag::is_uintx() const {
247 return strcmp(_type, "uintx") == 0;
248 }
249
250 uintx Flag::get_uintx() const {
251 return *((uintx*) _addr);
252 }
253
254 Flag::Error Flag::set_uintx(uintx value) {
255 Flag::Error error = check_writable(value!=get_uintx());
256 if (error == Flag::SUCCESS) {
257 *((uintx*) _addr) = value;
258 }
259 return error;
260 }
261
262 bool Flag::is_uint64_t() const {
263 return strcmp(_type, "uint64_t") == 0;
264 }
265
266 uint64_t Flag::get_uint64_t() const {
267 return *((uint64_t*) _addr);
268 }
269
270 Flag::Error Flag::set_uint64_t(uint64_t value) {
271 Flag::Error error = check_writable(value!=get_uint64_t());
272 if (error == Flag::SUCCESS) {
273 *((uint64_t*) _addr) = value;
274 }
275 return error;
276 }
277
278 bool Flag::is_size_t() const {
279 return strcmp(_type, "size_t") == 0;
280 }
281
282 size_t Flag::get_size_t() const {
283 return *((size_t*) _addr);
284 }
285
286 Flag::Error Flag::set_size_t(size_t value) {
287 Flag::Error error = check_writable(value!=get_size_t());
288 if (error == Flag::SUCCESS) {
289 *((size_t*) _addr) = value;
290 }
291 return error;
292 }
293
294 bool Flag::is_double() const {
295 return strcmp(_type, "double") == 0;
296 }
297
298 double Flag::get_double() const {
299 return *((double*) _addr);
300 }
301
302 Flag::Error Flag::set_double(double value) {
303 Flag::Error error = check_writable(value!=get_double());
304 if (error == Flag::SUCCESS) {
305 *((double*) _addr) = value;
306 }
307 return error;
308 }
309
310 bool Flag::is_ccstr() const {
311 return strcmp(_type, "ccstr") == 0 || strcmp(_type, "ccstrlist") == 0;
312 }
313
314 bool Flag::ccstr_accumulates() const {
315 return strcmp(_type, "ccstrlist") == 0;
316 }
317
318 ccstr Flag::get_ccstr() const {
319 return *((ccstr*) _addr);
320 }
321
322 Flag::Error Flag::set_ccstr(ccstr value) {
323 Flag::Error error = check_writable(value!=get_ccstr());
324 if (error == Flag::SUCCESS) {
325 *((ccstr*) _addr) = value;
326 }
327 return error;
328 }
329
330
331 Flag::Flags Flag::get_origin() {
332 return Flags(_flags & VALUE_ORIGIN_MASK);
333 }
334
335 void Flag::set_origin(Flags origin) {
336 assert((origin & VALUE_ORIGIN_MASK) == origin, "sanity");
337 Flags new_origin = Flags((origin == COMMAND_LINE) ? Flags(origin | ORIG_COMMAND_LINE) : origin);
338 _flags = Flags((_flags & ~VALUE_ORIGIN_MASK) | new_origin);
339 }
340
341 bool Flag::is_default() {
342 return (get_origin() == DEFAULT);
343 }
344
345 bool Flag::is_ergonomic() {
346 return (get_origin() == ERGONOMIC);
347 }
348
349 bool Flag::is_command_line() {
350 return (_flags & ORIG_COMMAND_LINE) != 0;
351 }
352
353 void Flag::set_command_line() {
354 _flags = Flags(_flags | ORIG_COMMAND_LINE);
355 }
356
357 bool Flag::is_product() const {
358 return (_flags & KIND_PRODUCT) != 0;
359 }
360
361 bool Flag::is_manageable() const {
362 return (_flags & KIND_MANAGEABLE) != 0;
363 }
364
365 bool Flag::is_diagnostic() const {
366 return (_flags & KIND_DIAGNOSTIC) != 0;
367 }
368
369 bool Flag::is_experimental() const {
370 return (_flags & KIND_EXPERIMENTAL) != 0;
371 }
372
373 bool Flag::is_notproduct() const {
374 return (_flags & KIND_NOT_PRODUCT) != 0;
375 }
376
377 bool Flag::is_develop() const {
378 return (_flags & KIND_DEVELOP) != 0;
379 }
380
381 bool Flag::is_read_write() const {
382 return (_flags & KIND_READ_WRITE) != 0;
383 }
384
385 bool Flag::is_commercial() const {
386 return (_flags & KIND_COMMERCIAL) != 0;
387 }
388
389 /**
390 * Returns if this flag is a constant in the binary. Right now this is
391 * true for notproduct and develop flags in product builds.
392 */
393 bool Flag::is_constant_in_binary() const {
394 #ifdef PRODUCT
395 return is_notproduct() || is_develop();
396 #else
397 return false;
398 #endif
399 }
400
401 bool Flag::is_unlocker() const {
402 return strcmp(_name, "UnlockDiagnosticVMOptions") == 0 ||
403 strcmp(_name, "UnlockExperimentalVMOptions") == 0 ||
404 is_unlocker_ext();
405 }
406
407 bool Flag::is_unlocked() const {
408 if (is_diagnostic()) {
409 return UnlockDiagnosticVMOptions;
410 }
411 if (is_experimental()) {
412 return UnlockExperimentalVMOptions;
413 }
414 return is_unlocked_ext();
415 }
416
417 void Flag::unlock_diagnostic() {
418 assert(is_diagnostic(), "sanity");
419 _flags = Flags(_flags & ~KIND_DIAGNOSTIC);
420 }
421
422 // Get custom message for this locked flag, or NULL if
423 // none is available. Returns message type produced.
424 Flag::MsgType Flag::get_locked_message(char* buf, int buflen) const {
425 buf[0] = '\0';
426 if (is_diagnostic() && !is_unlocked()) {
427 jio_snprintf(buf, buflen,
428 "Error: VM option '%s' is diagnostic and must be enabled via -XX:+UnlockDiagnosticVMOptions.\n"
429 "Error: The unlock option must precede '%s'.\n",
430 _name, _name);
431 return Flag::DIAGNOSTIC_FLAG_BUT_LOCKED;
432 }
433 if (is_experimental() && !is_unlocked()) {
434 jio_snprintf(buf, buflen,
435 "Error: VM option '%s' is experimental and must be enabled via -XX:+UnlockExperimentalVMOptions.\n"
436 "Error: The unlock option must precede '%s'.\n",
437 _name, _name);
438 return Flag::EXPERIMENTAL_FLAG_BUT_LOCKED;
439 }
440 if (is_develop() && is_product_build()) {
441 jio_snprintf(buf, buflen, "Error: VM option '%s' is develop and is available only in debug version of VM.\n",
442 _name);
443 return Flag::DEVELOPER_FLAG_BUT_PRODUCT_BUILD;
444 }
445 if (is_notproduct() && is_product_build()) {
446 jio_snprintf(buf, buflen, "Error: VM option '%s' is notproduct and is available only in debug version of VM.\n",
447 _name);
448 return Flag::NOTPRODUCT_FLAG_BUT_PRODUCT_BUILD;
449 }
450 get_locked_message_ext(buf, buflen);
451 return Flag::NONE;
452 }
453
454 bool Flag::is_writeable() const {
455 return is_manageable() || (is_product() && is_read_write()) || is_writeable_ext();
456 }
457
458 // All flags except "manageable" are assumed to be internal flags.
459 // Long term, we need to define a mechanism to specify which flags
460 // are external/stable and change this function accordingly.
461 bool Flag::is_external() const {
462 return is_manageable() || is_external_ext();
463 }
464
465 void Flag::print_on(outputStream* st, bool withComments, bool printRanges) {
466 // Don't print notproduct and develop flags in a product build.
467 if (is_constant_in_binary()) {
468 return;
469 }
470
471 if (!printRanges) {
472 // Use some named constants to make code more readable.
473 const unsigned int nSpaces = 10;
474 const unsigned int maxFlagLen = 40 + nSpaces;
475
476 // The print below assumes that the flag name is 40 characters or less.
477 // This works for most flags, but there are exceptions. Our longest flag
478 // name right now is UseAdaptiveGenerationSizePolicyAtMajorCollection and
479 // its minor collection buddy. These are 48 characters. We use a buffer of
480 // nSpaces spaces below to adjust the space between the flag value and the
481 // column of flag type and origin that is printed in the end of the line.
482 char spaces[nSpaces + 1] = " ";
483 st->print("%9s %-*s = ", _type, maxFlagLen-nSpaces, _name);
484
485 if (is_bool()) {
486 st->print("%-20s", get_bool() ? "true" : "false");
487 } else if (is_int()) {
488 st->print("%-20d", get_int());
489 } else if (is_uint()) {
490 st->print("%-20u", get_uint());
491 } else if (is_intx()) {
492 st->print(INTX_FORMAT_W(-20), get_intx());
493 } else if (is_uintx()) {
494 st->print(UINTX_FORMAT_W(-20), get_uintx());
495 } else if (is_uint64_t()) {
496 st->print(UINT64_FORMAT_W(-20), get_uint64_t());
497 } else if (is_size_t()) {
498 st->print(SIZE_FORMAT_W(-20), get_size_t());
499 } else if (is_double()) {
500 st->print("%-20f", get_double());
501 } else if (is_ccstr()) {
502 const char* cp = get_ccstr();
503 if (cp != NULL) {
504 const char* eol;
505 while ((eol = strchr(cp, '\n')) != NULL) {
506 size_t llen = pointer_delta(eol, cp, sizeof(char));
507 st->print("%.*s", (int)llen, cp);
508 st->cr();
509 cp = eol+1;
510 st->print("%5s %-35s += ", "", _name);
511 }
512 st->print("%-20s", cp);
513 }
514 else st->print("%-20s", "");
515 }
516 // Make sure we do not punch a '\0' at a negative char array index.
517 unsigned int nameLen = (unsigned int)strlen(_name);
518 if (nameLen <= maxFlagLen) {
519 spaces[maxFlagLen - MAX2(maxFlagLen-nSpaces, nameLen)] = '\0';
520 st->print("%s", spaces);
521 }
522 print_kind_and_origin(st);
523
524 #ifndef PRODUCT
525 if (withComments) {
526 st->print("%s", _doc);
527 }
528 #endif
529
530 st->cr();
531
532 } else if (!is_bool() && !is_ccstr()) {
533 st->print("%9s %-50s ", _type, _name);
534
535 RangeStrFunc func = NULL;
536 if (is_int()) {
537 func = Flag::get_int_default_range_str;
538 } else if (is_uint()) {
539 func = Flag::get_uint_default_range_str;
540 } else if (is_intx()) {
541 func = Flag::get_intx_default_range_str;
542 } else if (is_uintx()) {
543 func = Flag::get_uintx_default_range_str;
544 } else if (is_uint64_t()) {
545 func = Flag::get_uint64_t_default_range_str;
546 } else if (is_size_t()) {
547 func = Flag::get_size_t_default_range_str;
548 } else if (is_double()) {
549 func = Flag::get_double_default_range_str;
550 } else {
551 ShouldNotReachHere();
552 }
553 CommandLineFlagRangeList::print(st, _name, func);
554
555 st->print(" %-16s", " ");
556 print_kind_and_origin(st);
557
558 #ifndef PRODUCT
559 if (withComments) {
560 st->print("%s", _doc);
561 }
562 #endif
563
564 st->cr();
565 }
566 }
567
568 void Flag::print_kind_and_origin(outputStream* st) {
569 struct Data {
570 int flag;
571 const char* name;
572 };
573
574 Data data[] = {
575 { KIND_JVMCI, "JVMCI" },
576 { KIND_C1, "C1" },
577 { KIND_C2, "C2" },
578 { KIND_ARCH, "ARCH" },
579 { KIND_SHARK, "SHARK" },
580 { KIND_PLATFORM_DEPENDENT, "pd" },
581 { KIND_PRODUCT, "product" },
582 { KIND_MANAGEABLE, "manageable" },
583 { KIND_DIAGNOSTIC, "diagnostic" },
584 { KIND_EXPERIMENTAL, "experimental" },
585 { KIND_COMMERCIAL, "commercial" },
586 { KIND_NOT_PRODUCT, "notproduct" },
587 { KIND_DEVELOP, "develop" },
588 { KIND_LP64_PRODUCT, "lp64_product" },
589 { KIND_READ_WRITE, "rw" },
590 { -1, "" }
591 };
592
593 if ((_flags & KIND_MASK) != 0) {
594 bool is_first = true;
595 const size_t buffer_size = 64;
596 size_t buffer_used = 0;
597 char kind[buffer_size];
598
599 jio_snprintf(kind, buffer_size, "{");
600 buffer_used++;
601 for (int i = 0; data[i].flag != -1; i++) {
602 Data d = data[i];
603 if ((_flags & d.flag) != 0) {
604 if (is_first) {
605 is_first = false;
606 } else {
607 assert(buffer_used + 1 < buffer_size, "Too small buffer");
608 jio_snprintf(kind + buffer_used, buffer_size - buffer_used, " ");
609 buffer_used++;
610 }
611 size_t length = strlen(d.name);
612 assert(buffer_used + length < buffer_size, "Too small buffer");
613 jio_snprintf(kind + buffer_used, buffer_size - buffer_used, "%s", d.name);
614 buffer_used += length;
615 }
616 }
617 assert(buffer_used + 2 <= buffer_size, "Too small buffer");
618 jio_snprintf(kind + buffer_used, buffer_size - buffer_used, "}");
619 st->print("%20s", kind);
620 }
621
622 int origin = _flags & VALUE_ORIGIN_MASK;
623 st->print(" {");
624 switch(origin) {
625 case DEFAULT:
626 st->print("default"); break;
627 case COMMAND_LINE:
628 st->print("command line"); break;
629 case ENVIRON_VAR:
630 st->print("environment"); break;
631 case CONFIG_FILE:
632 st->print("config file"); break;
633 case MANAGEMENT:
634 st->print("management"); break;
635 case ERGONOMIC:
636 if (_flags & ORIG_COMMAND_LINE) {
637 st->print("command line, ");
638 }
639 st->print("ergonomic"); break;
640 case ATTACH_ON_DEMAND:
641 st->print("attach"); break;
642 case INTERNAL:
643 st->print("internal"); break;
644 }
645 st->print("}");
646 }
647
648 void Flag::print_as_flag(outputStream* st) {
649 if (is_bool()) {
650 st->print("-XX:%s%s", get_bool() ? "+" : "-", _name);
651 } else if (is_int()) {
652 st->print("-XX:%s=%d", _name, get_int());
653 } else if (is_uint()) {
654 st->print("-XX:%s=%u", _name, get_uint());
655 } else if (is_intx()) {
656 st->print("-XX:%s=" INTX_FORMAT, _name, get_intx());
657 } else if (is_uintx()) {
658 st->print("-XX:%s=" UINTX_FORMAT, _name, get_uintx());
659 } else if (is_uint64_t()) {
660 st->print("-XX:%s=" UINT64_FORMAT, _name, get_uint64_t());
661 } else if (is_size_t()) {
662 st->print("-XX:%s=" SIZE_FORMAT, _name, get_size_t());
663 } else if (is_double()) {
664 st->print("-XX:%s=%f", _name, get_double());
665 } else if (is_ccstr()) {
666 st->print("-XX:%s=", _name);
667 const char* cp = get_ccstr();
668 if (cp != NULL) {
669 // Need to turn embedded '\n's back into separate arguments
670 // Not so efficient to print one character at a time,
671 // but the choice is to do the transformation to a buffer
672 // and print that. And this need not be efficient.
673 for (; *cp != '\0'; cp += 1) {
674 switch (*cp) {
675 default:
676 st->print("%c", *cp);
677 break;
678 case '\n':
679 st->print(" -XX:%s=", _name);
680 break;
681 }
682 }
683 }
684 } else {
685 ShouldNotReachHere();
686 }
687 }
688
689 const char* Flag::flag_error_str(Flag::Error error) {
690 switch (error) {
691 case Flag::MISSING_NAME: return "MISSING_NAME";
692 case Flag::MISSING_VALUE: return "MISSING_VALUE";
693 case Flag::NON_WRITABLE: return "NON_WRITABLE";
694 case Flag::OUT_OF_BOUNDS: return "OUT_OF_BOUNDS";
695 case Flag::VIOLATES_CONSTRAINT: return "VIOLATES_CONSTRAINT";
696 case Flag::INVALID_FLAG: return "INVALID_FLAG";
697 case Flag::ERR_OTHER: return "ERR_OTHER";
698 case Flag::SUCCESS: return "SUCCESS";
699 default: ShouldNotReachHere(); return "NULL";
700 }
701 }
702
703 // 4991491 do not "optimize out" the was_set false values: omitting them
704 // tickles a Microsoft compiler bug causing flagTable to be malformed
705
706 #define RUNTIME_PRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_PRODUCT) },
707 #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) },
708 #define RUNTIME_DIAGNOSTIC_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_DIAGNOSTIC) },
709 #define RUNTIME_PD_DIAGNOSTIC_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_DIAGNOSTIC | Flag::KIND_PLATFORM_DEPENDENT) },
710 #define RUNTIME_EXPERIMENTAL_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_EXPERIMENTAL) },
711 #define RUNTIME_MANAGEABLE_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_MANAGEABLE) },
712 #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) },
713 #define RUNTIME_DEVELOP_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_DEVELOP) },
714 #define RUNTIME_PD_DEVELOP_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_DEVELOP | Flag::KIND_PLATFORM_DEPENDENT) },
715 #define RUNTIME_NOTPRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_NOT_PRODUCT) },
716
717 #define JVMCI_PRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_JVMCI | Flag::KIND_PRODUCT) },
718 #define JVMCI_PD_PRODUCT_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_JVMCI | Flag::KIND_PRODUCT | Flag::KIND_PLATFORM_DEPENDENT) },
719 #define JVMCI_DIAGNOSTIC_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_JVMCI | Flag::KIND_DIAGNOSTIC) },
720 #define JVMCI_PD_DIAGNOSTIC_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_JVMCI | Flag::KIND_DIAGNOSTIC | Flag::KIND_PLATFORM_DEPENDENT) },
721 #define JVMCI_EXPERIMENTAL_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_JVMCI | Flag::KIND_EXPERIMENTAL) },
722 #define JVMCI_DEVELOP_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_JVMCI | Flag::KIND_DEVELOP) },
723 #define JVMCI_PD_DEVELOP_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_JVMCI | Flag::KIND_DEVELOP | Flag::KIND_PLATFORM_DEPENDENT) },
724 #define JVMCI_NOTPRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_JVMCI | Flag::KIND_NOT_PRODUCT) },
725
726 #ifdef _LP64
727 #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) },
728 #else
729 #define RUNTIME_LP64_PRODUCT_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
730 #endif // _LP64
731
732 #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) },
733 #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) },
734 #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) },
735 #define C1_PD_DIAGNOSTIC_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C1 | Flag::KIND_DIAGNOSTIC | Flag::KIND_PLATFORM_DEPENDENT) },
736 #define C1_DEVELOP_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C1 | Flag::KIND_DEVELOP) },
737 #define C1_PD_DEVELOP_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C1 | Flag::KIND_DEVELOP | Flag::KIND_PLATFORM_DEPENDENT) },
738 #define C1_NOTPRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C1 | Flag::KIND_NOT_PRODUCT) },
739
740 #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) },
741 #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) },
742 #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) },
743 #define C2_PD_DIAGNOSTIC_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C2 | Flag::KIND_DIAGNOSTIC | Flag::KIND_PLATFORM_DEPENDENT) },
744 #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) },
745 #define C2_DEVELOP_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C2 | Flag::KIND_DEVELOP) },
746 #define C2_PD_DEVELOP_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C2 | Flag::KIND_DEVELOP | Flag::KIND_PLATFORM_DEPENDENT) },
747 #define C2_NOTPRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_C2 | Flag::KIND_NOT_PRODUCT) },
748
749 #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) },
750 #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) },
751 #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) },
752 #define ARCH_DEVELOP_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_ARCH | Flag::KIND_DEVELOP) },
753 #define ARCH_NOTPRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_ARCH | Flag::KIND_NOT_PRODUCT) },
754
755 #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) },
756 #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) },
757 #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) },
758 #define SHARK_PD_DIAGNOSTIC_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_SHARK | Flag::KIND_DIAGNOSTIC | Flag::KIND_PLATFORM_DEPENDENT) },
759 #define SHARK_DEVELOP_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_SHARK | Flag::KIND_DEVELOP) },
760 #define SHARK_PD_DEVELOP_FLAG_STRUCT( type, name, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_SHARK | Flag::KIND_DEVELOP | Flag::KIND_PLATFORM_DEPENDENT) },
761 #define SHARK_NOTPRODUCT_FLAG_STRUCT( type, name, value, doc) { #type, XSTR(name), (void*) &name, NOT_PRODUCT_ARG(doc) Flag::Flags(Flag::DEFAULT | Flag::KIND_SHARK | Flag::KIND_NOT_PRODUCT) },
762
763 static Flag flagTable[] = {
764 RUNTIME_FLAGS(RUNTIME_DEVELOP_FLAG_STRUCT, \
765 RUNTIME_PD_DEVELOP_FLAG_STRUCT, \
766 RUNTIME_PRODUCT_FLAG_STRUCT, \
767 RUNTIME_PD_PRODUCT_FLAG_STRUCT, \
768 RUNTIME_DIAGNOSTIC_FLAG_STRUCT, \
769 RUNTIME_PD_DIAGNOSTIC_FLAG_STRUCT, \
770 RUNTIME_EXPERIMENTAL_FLAG_STRUCT, \
771 RUNTIME_NOTPRODUCT_FLAG_STRUCT, \
772 RUNTIME_MANAGEABLE_FLAG_STRUCT, \
773 RUNTIME_PRODUCT_RW_FLAG_STRUCT, \
774 RUNTIME_LP64_PRODUCT_FLAG_STRUCT, \
775 IGNORE_RANGE, \
776 IGNORE_CONSTRAINT, \
777 IGNORE_WRITEABLE)
778 RUNTIME_OS_FLAGS(RUNTIME_DEVELOP_FLAG_STRUCT, \
779 RUNTIME_PD_DEVELOP_FLAG_STRUCT, \
780 RUNTIME_PRODUCT_FLAG_STRUCT, \
781 RUNTIME_PD_PRODUCT_FLAG_STRUCT, \
782 RUNTIME_DIAGNOSTIC_FLAG_STRUCT, \
783 RUNTIME_PD_DIAGNOSTIC_FLAG_STRUCT, \
784 RUNTIME_NOTPRODUCT_FLAG_STRUCT, \
785 IGNORE_RANGE, \
786 IGNORE_CONSTRAINT, \
787 IGNORE_WRITEABLE)
788 #if INCLUDE_ALL_GCS
789 G1_FLAGS(RUNTIME_DEVELOP_FLAG_STRUCT, \
790 RUNTIME_PD_DEVELOP_FLAG_STRUCT, \
791 RUNTIME_PRODUCT_FLAG_STRUCT, \
792 RUNTIME_PD_PRODUCT_FLAG_STRUCT, \
793 RUNTIME_DIAGNOSTIC_FLAG_STRUCT, \
794 RUNTIME_PD_DIAGNOSTIC_FLAG_STRUCT, \
795 RUNTIME_EXPERIMENTAL_FLAG_STRUCT, \
796 RUNTIME_NOTPRODUCT_FLAG_STRUCT, \
797 RUNTIME_MANAGEABLE_FLAG_STRUCT, \
798 RUNTIME_PRODUCT_RW_FLAG_STRUCT, \
799 IGNORE_RANGE, \
800 IGNORE_CONSTRAINT, \
801 IGNORE_WRITEABLE)
802 #endif // INCLUDE_ALL_GCS
803 #if INCLUDE_JVMCI
804 JVMCI_FLAGS(JVMCI_DEVELOP_FLAG_STRUCT, \
805 JVMCI_PD_DEVELOP_FLAG_STRUCT, \
806 JVMCI_PRODUCT_FLAG_STRUCT, \
807 JVMCI_PD_PRODUCT_FLAG_STRUCT, \
808 JVMCI_DIAGNOSTIC_FLAG_STRUCT, \
809 JVMCI_PD_DIAGNOSTIC_FLAG_STRUCT, \
810 JVMCI_EXPERIMENTAL_FLAG_STRUCT, \
811 JVMCI_NOTPRODUCT_FLAG_STRUCT, \
812 IGNORE_RANGE, \
813 IGNORE_CONSTRAINT, \
814 IGNORE_WRITEABLE)
815 #endif // INCLUDE_JVMCI
816 #ifdef COMPILER1
817 C1_FLAGS(C1_DEVELOP_FLAG_STRUCT, \
818 C1_PD_DEVELOP_FLAG_STRUCT, \
819 C1_PRODUCT_FLAG_STRUCT, \
820 C1_PD_PRODUCT_FLAG_STRUCT, \
821 C1_DIAGNOSTIC_FLAG_STRUCT, \
822 C1_PD_DIAGNOSTIC_FLAG_STRUCT, \
823 C1_NOTPRODUCT_FLAG_STRUCT, \
824 IGNORE_RANGE, \
825 IGNORE_CONSTRAINT, \
826 IGNORE_WRITEABLE)
827 #endif // COMPILER1
828 #ifdef COMPILER2
829 C2_FLAGS(C2_DEVELOP_FLAG_STRUCT, \
830 C2_PD_DEVELOP_FLAG_STRUCT, \
831 C2_PRODUCT_FLAG_STRUCT, \
832 C2_PD_PRODUCT_FLAG_STRUCT, \
833 C2_DIAGNOSTIC_FLAG_STRUCT, \
834 C2_PD_DIAGNOSTIC_FLAG_STRUCT, \
835 C2_EXPERIMENTAL_FLAG_STRUCT, \
836 C2_NOTPRODUCT_FLAG_STRUCT, \
837 IGNORE_RANGE, \
838 IGNORE_CONSTRAINT, \
839 IGNORE_WRITEABLE)
840 #endif // COMPILER2
841 #ifdef SHARK
842 SHARK_FLAGS(SHARK_DEVELOP_FLAG_STRUCT, \
843 SHARK_PD_DEVELOP_FLAG_STRUCT, \
844 SHARK_PRODUCT_FLAG_STRUCT, \
845 SHARK_PD_PRODUCT_FLAG_STRUCT, \
846 SHARK_DIAGNOSTIC_FLAG_STRUCT, \
847 SHARK_PD_DIAGNOSTIC_FLAG_STRUCT, \
848 SHARK_NOTPRODUCT_FLAG_STRUCT, \
849 IGNORE_RANGE, \
850 IGNORE_CONSTRAINT, \
851 IGNORE_WRITEABLE)
852 #endif // SHARK
853 ARCH_FLAGS(ARCH_DEVELOP_FLAG_STRUCT, \
854 ARCH_PRODUCT_FLAG_STRUCT, \
855 ARCH_DIAGNOSTIC_FLAG_STRUCT, \
856 ARCH_EXPERIMENTAL_FLAG_STRUCT, \
857 ARCH_NOTPRODUCT_FLAG_STRUCT, \
858 IGNORE_RANGE, \
859 IGNORE_CONSTRAINT, \
860 IGNORE_WRITEABLE)
861 FLAGTABLE_EXT
862 {0, NULL, NULL}
863 };
864
865 Flag* Flag::flags = flagTable;
866 size_t Flag::numFlags = (sizeof(flagTable) / sizeof(Flag));
867
868 inline bool str_equal(const char* s, const char* q, size_t len) {
869 // s is null terminated, q is not!
870 if (strlen(s) != (unsigned int) len) return false;
871 return strncmp(s, q, len) == 0;
872 }
873
874 // Search the flag table for a named flag
875 Flag* Flag::find_flag(const char* name, size_t length, bool allow_locked, bool return_flag) {
876 for (Flag* current = &flagTable[0]; current->_name != NULL; current++) {
877 if (str_equal(current->_name, name, length)) {
878 // Found a matching entry.
879 // Don't report notproduct and develop flags in product builds.
880 if (current->is_constant_in_binary()) {
881 return (return_flag ? current : NULL);
882 }
883 // Report locked flags only if allowed.
884 if (!(current->is_unlocked() || current->is_unlocker())) {
885 if (!allow_locked) {
886 // disable use of locked flags, e.g. diagnostic, experimental,
887 // commercial... until they are explicitly unlocked
888 return NULL;
889 }
890 }
891 return current;
892 }
893 }
894 // Flag name is not in the flag table
895 return NULL;
896 }
897
898 // Compute string similarity based on Dice's coefficient
899 static float str_similar(const char* str1, const char* str2, size_t len2) {
900 int len1 = (int) strlen(str1);
901 int total = len1 + (int) len2;
902
903 int hit = 0;
904
905 for (int i = 0; i < len1 -1; ++i) {
906 for (int j = 0; j < (int) len2 -1; ++j) {
907 if ((str1[i] == str2[j]) && (str1[i+1] == str2[j+1])) {
908 ++hit;
909 break;
910 }
911 }
912 }
913
914 return 2.0f * (float) hit / (float) total;
915 }
916
917 Flag* Flag::fuzzy_match(const char* name, size_t length, bool allow_locked) {
918 float VMOptionsFuzzyMatchSimilarity = 0.7f;
919 Flag* match = NULL;
920 float score;
921 float max_score = -1;
922
923 for (Flag* current = &flagTable[0]; current->_name != NULL; current++) {
924 score = str_similar(current->_name, name, length);
925 if (score > max_score) {
926 max_score = score;
927 match = current;
928 }
929 }
930
931 if (!(match->is_unlocked() || match->is_unlocker())) {
932 if (!allow_locked) {
933 return NULL;
934 }
935 }
936
937 if (max_score < VMOptionsFuzzyMatchSimilarity) {
938 return NULL;
939 }
940
941 return match;
942 }
943
944 // Returns the address of the index'th element
945 static Flag* address_of_flag(CommandLineFlagWithType flag) {
946 assert((size_t)flag < Flag::numFlags, "bad command line flag index");
947 return &Flag::flags[flag];
948 }
949
950 bool CommandLineFlagsEx::is_default(CommandLineFlag flag) {
951 assert((size_t)flag < Flag::numFlags, "bad command line flag index");
952 Flag* f = &Flag::flags[flag];
953 return f->is_default();
954 }
955
956 bool CommandLineFlagsEx::is_ergo(CommandLineFlag flag) {
957 assert((size_t)flag < Flag::numFlags, "bad command line flag index");
958 Flag* f = &Flag::flags[flag];
959 return f->is_ergonomic();
960 }
961
962 bool CommandLineFlagsEx::is_cmdline(CommandLineFlag flag) {
963 assert((size_t)flag < Flag::numFlags, "bad command line flag index");
964 Flag* f = &Flag::flags[flag];
965 return f->is_command_line();
966 }
967
968 bool CommandLineFlags::wasSetOnCmdline(const char* name, bool* value) {
969 Flag* result = Flag::find_flag((char*)name, strlen(name));
970 if (result == NULL) return false;
971 *value = result->is_command_line();
972 return true;
973 }
974
975 void CommandLineFlagsEx::setOnCmdLine(CommandLineFlagWithType flag) {
976 Flag* faddr = address_of_flag(flag);
977 assert(faddr != NULL, "Unknown flag");
978 faddr->set_command_line();
979 }
980
981 template<class E, class T>
982 static void trace_flag_changed(const char* name, const T old_value, const T new_value, const Flag::Flags origin) {
983 E e;
984 e.set_name(name);
985 e.set_oldValue(old_value);
986 e.set_newValue(new_value);
987 e.set_origin(origin);
988 e.commit();
989 }
990
991 static Flag::Error apply_constraint_and_check_range_bool(const char* name, bool new_value, bool verbose) {
992 Flag::Error status = Flag::SUCCESS;
993 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find_if_needs_check(name);
994 if (constraint != NULL) {
995 status = constraint->apply_bool(new_value, verbose);
996 }
997 return status;
998 }
999
1000 Flag::Error CommandLineFlags::boolAt(const char* name, size_t len, bool* value, bool allow_locked, bool return_flag) {
1001 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag);
1002 if (result == NULL) return Flag::INVALID_FLAG;
1003 if (!result->is_bool()) return Flag::WRONG_FORMAT;
1004 *value = result->get_bool();
1005 return Flag::SUCCESS;
1006 }
1007
1008 Flag::Error CommandLineFlags::boolAtPut(Flag* flag, bool* value, Flag::Flags origin) {
1009 const char* name;
1010 if (flag == NULL) return Flag::INVALID_FLAG;
1011 if (!flag->is_bool()) return Flag::WRONG_FORMAT;
1012 name = flag->_name;
1013 Flag::Error check = apply_constraint_and_check_range_bool(name, *value, !CommandLineFlagConstraintList::validated_after_ergo());
1014 if (check != Flag::SUCCESS) return check;
1015 bool old_value = flag->get_bool();
1016 trace_flag_changed<EventBooleanFlagChanged, bool>(name, old_value, *value, origin);
1017 check = flag->set_bool(*value);
1018 *value = old_value;
1019 flag->set_origin(origin);
1020 return check;
1021 }
1022
1023 Flag::Error CommandLineFlags::boolAtPut(const char* name, size_t len, bool* value, Flag::Flags origin) {
1024 Flag* result = Flag::find_flag(name, len);
1025 return boolAtPut(result, value, origin);
1026 }
1027
1028 Flag::Error CommandLineFlagsEx::boolAtPut(CommandLineFlagWithType flag, bool value, Flag::Flags origin) {
1029 Flag* faddr = address_of_flag(flag);
1030 guarantee(faddr != NULL && faddr->is_bool(), "wrong flag type");
1031 return CommandLineFlags::boolAtPut(faddr, &value, origin);
1032 }
1033
1034 static Flag::Error apply_constraint_and_check_range_int(const char* name, int new_value, bool verbose) {
1035 Flag::Error status = Flag::SUCCESS;
1036 CommandLineFlagRange* range = CommandLineFlagRangeList::find(name);
1037 if (range != NULL) {
1038 status = range->check_int(new_value, verbose);
1039 }
1040 if (status == Flag::SUCCESS) {
1041 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find_if_needs_check(name);
1042 if (constraint != NULL) {
1043 status = constraint->apply_int(new_value, verbose);
1044 }
1045 }
1046 return status;
1047 }
1048
1049 Flag::Error CommandLineFlags::intAt(const char* name, size_t len, int* value, bool allow_locked, bool return_flag) {
1050 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag);
1051 if (result == NULL) return Flag::INVALID_FLAG;
1052 if (!result->is_int()) return Flag::WRONG_FORMAT;
1053 *value = result->get_int();
1054 return Flag::SUCCESS;
1055 }
1056
1057 Flag::Error CommandLineFlags::intAtPut(Flag* flag, int* value, Flag::Flags origin) {
1058 const char* name;
1059 if (flag == NULL) return Flag::INVALID_FLAG;
1060 if (!flag->is_int()) return Flag::WRONG_FORMAT;
1061 name = flag->_name;
1062 Flag::Error check = apply_constraint_and_check_range_int(name, *value, !CommandLineFlagConstraintList::validated_after_ergo());
1063 if (check != Flag::SUCCESS) return check;
1064 int old_value = flag->get_int();
1065 trace_flag_changed<EventIntFlagChanged, s4>(name, old_value, *value, origin);
1066 check = flag->set_int(*value);
1067 *value = old_value;
1068 flag->set_origin(origin);
1069 return check;
1070 }
1071
1072 Flag::Error CommandLineFlags::intAtPut(const char* name, size_t len, int* value, Flag::Flags origin) {
1073 Flag* result = Flag::find_flag(name, len);
1074 return intAtPut(result, value, origin);
1075 }
1076
1077 Flag::Error CommandLineFlagsEx::intAtPut(CommandLineFlagWithType flag, int value, Flag::Flags origin) {
1078 Flag* faddr = address_of_flag(flag);
1079 guarantee(faddr != NULL && faddr->is_int(), "wrong flag type");
1080 return CommandLineFlags::intAtPut(faddr, &value, origin);
1081 }
1082
1083 static Flag::Error apply_constraint_and_check_range_uint(const char* name, uint new_value, bool verbose) {
1084 Flag::Error status = Flag::SUCCESS;
1085 CommandLineFlagRange* range = CommandLineFlagRangeList::find(name);
1086 if (range != NULL) {
1087 status = range->check_uint(new_value, verbose);
1088 }
1089 if (status == Flag::SUCCESS) {
1090 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find_if_needs_check(name);
1091 if (constraint != NULL) {
1092 status = constraint->apply_uint(new_value, verbose);
1093 }
1094 }
1095 return status;
1096 }
1097
1098 Flag::Error CommandLineFlags::uintAt(const char* name, size_t len, uint* value, bool allow_locked, bool return_flag) {
1099 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag);
1100 if (result == NULL) return Flag::INVALID_FLAG;
1101 if (!result->is_uint()) return Flag::WRONG_FORMAT;
1102 *value = result->get_uint();
1103 return Flag::SUCCESS;
1104 }
1105
1106 Flag::Error CommandLineFlags::uintAtPut(Flag* flag, uint* value, Flag::Flags origin) {
1107 const char* name;
1108 if (flag == NULL) return Flag::INVALID_FLAG;
1109 if (!flag->is_uint()) return Flag::WRONG_FORMAT;
1110 name = flag->_name;
1111 Flag::Error check = apply_constraint_and_check_range_uint(name, *value, !CommandLineFlagConstraintList::validated_after_ergo());
1112 if (check != Flag::SUCCESS) return check;
1113 uint old_value = flag->get_uint();
1114 trace_flag_changed<EventUnsignedIntFlagChanged, u4>(name, old_value, *value, origin);
1115 check = flag->set_uint(*value);
1116 *value = old_value;
1117 flag->set_origin(origin);
1118 return check;
1119 }
1120
1121 Flag::Error CommandLineFlags::uintAtPut(const char* name, size_t len, uint* value, Flag::Flags origin) {
1122 Flag* result = Flag::find_flag(name, len);
1123 return uintAtPut(result, value, origin);
1124 }
1125
1126 Flag::Error CommandLineFlagsEx::uintAtPut(CommandLineFlagWithType flag, uint value, Flag::Flags origin) {
1127 Flag* faddr = address_of_flag(flag);
1128 guarantee(faddr != NULL && faddr->is_uint(), "wrong flag type");
1129 return CommandLineFlags::uintAtPut(faddr, &value, origin);
1130 }
1131
1132 Flag::Error CommandLineFlags::intxAt(const char* name, size_t len, intx* value, bool allow_locked, bool return_flag) {
1133 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag);
1134 if (result == NULL) return Flag::INVALID_FLAG;
1135 if (!result->is_intx()) return Flag::WRONG_FORMAT;
1136 *value = result->get_intx();
1137 return Flag::SUCCESS;
1138 }
1139
1140 static Flag::Error apply_constraint_and_check_range_intx(const char* name, intx new_value, bool verbose) {
1141 Flag::Error status = Flag::SUCCESS;
1142 CommandLineFlagRange* range = CommandLineFlagRangeList::find(name);
1143 if (range != NULL) {
1144 status = range->check_intx(new_value, verbose);
1145 }
1146 if (status == Flag::SUCCESS) {
1147 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find_if_needs_check(name);
1148 if (constraint != NULL) {
1149 status = constraint->apply_intx(new_value, verbose);
1150 }
1151 }
1152 return status;
1153 }
1154
1155 Flag::Error CommandLineFlags::intxAtPut(Flag* flag, intx* value, Flag::Flags origin) {
1156 const char* name;
1157 if (flag == NULL) return Flag::INVALID_FLAG;
1158 if (!flag->is_intx()) return Flag::WRONG_FORMAT;
1159 name = flag->_name;
1160 Flag::Error check = apply_constraint_and_check_range_intx(name, *value, !CommandLineFlagConstraintList::validated_after_ergo());
1161 if (check != Flag::SUCCESS) return check;
1162 intx old_value = flag->get_intx();
1163 trace_flag_changed<EventLongFlagChanged, intx>(name, old_value, *value, origin);
1164 check = flag->set_intx(*value);
1165 *value = old_value;
1166 flag->set_origin(origin);
1167 return check;
1168 }
1169
1170 Flag::Error CommandLineFlags::intxAtPut(const char* name, size_t len, intx* value, Flag::Flags origin) {
1171 Flag* result = Flag::find_flag(name, len);
1172 return intxAtPut(result, value, origin);
1173 }
1174
1175 Flag::Error CommandLineFlagsEx::intxAtPut(CommandLineFlagWithType flag, intx value, Flag::Flags origin) {
1176 Flag* faddr = address_of_flag(flag);
1177 guarantee(faddr != NULL && faddr->is_intx(), "wrong flag type");
1178 return CommandLineFlags::intxAtPut(faddr, &value, origin);
1179 }
1180
1181 Flag::Error CommandLineFlags::uintxAt(const char* name, size_t len, uintx* value, bool allow_locked, bool return_flag) {
1182 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag);
1183 if (result == NULL) return Flag::INVALID_FLAG;
1184 if (!result->is_uintx()) return Flag::WRONG_FORMAT;
1185 *value = result->get_uintx();
1186 return Flag::SUCCESS;
1187 }
1188
1189 static Flag::Error apply_constraint_and_check_range_uintx(const char* name, uintx new_value, bool verbose) {
1190 Flag::Error status = Flag::SUCCESS;
1191 CommandLineFlagRange* range = CommandLineFlagRangeList::find(name);
1192 if (range != NULL) {
1193 status = range->check_uintx(new_value, verbose);
1194 }
1195 if (status == Flag::SUCCESS) {
1196 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find_if_needs_check(name);
1197 if (constraint != NULL) {
1198 status = constraint->apply_uintx(new_value, verbose);
1199 }
1200 }
1201 return status;
1202 }
1203
1204 Flag::Error CommandLineFlags::uintxAtPut(Flag* flag, uintx* value, Flag::Flags origin) {
1205 const char* name;
1206 if (flag == NULL) return Flag::INVALID_FLAG;
1207 if (!flag->is_uintx()) return Flag::WRONG_FORMAT;
1208 name = flag->_name;
1209 Flag::Error check = apply_constraint_and_check_range_uintx(name, *value, !CommandLineFlagConstraintList::validated_after_ergo());
1210 if (check != Flag::SUCCESS) return check;
1211 uintx old_value = flag->get_uintx();
1212 trace_flag_changed<EventUnsignedLongFlagChanged, u8>(name, old_value, *value, origin);
1213 check = flag->set_uintx(*value);
1214 *value = old_value;
1215 flag->set_origin(origin);
1216 return check;
1217 }
1218
1219 Flag::Error CommandLineFlags::uintxAtPut(const char* name, size_t len, uintx* value, Flag::Flags origin) {
1220 Flag* result = Flag::find_flag(name, len);
1221 return uintxAtPut(result, value, origin);
1222 }
1223
1224 Flag::Error CommandLineFlagsEx::uintxAtPut(CommandLineFlagWithType flag, uintx value, Flag::Flags origin) {
1225 Flag* faddr = address_of_flag(flag);
1226 guarantee(faddr != NULL && faddr->is_uintx(), "wrong flag type");
1227 return CommandLineFlags::uintxAtPut(faddr, &value, origin);
1228 }
1229
1230 Flag::Error CommandLineFlags::uint64_tAt(const char* name, size_t len, uint64_t* value, bool allow_locked, bool return_flag) {
1231 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag);
1232 if (result == NULL) return Flag::INVALID_FLAG;
1233 if (!result->is_uint64_t()) return Flag::WRONG_FORMAT;
1234 *value = result->get_uint64_t();
1235 return Flag::SUCCESS;
1236 }
1237
1238 static Flag::Error apply_constraint_and_check_range_uint64_t(const char* name, uint64_t new_value, bool verbose) {
1239 Flag::Error status = Flag::SUCCESS;
1240 CommandLineFlagRange* range = CommandLineFlagRangeList::find(name);
1241 if (range != NULL) {
1242 status = range->check_uint64_t(new_value, verbose);
1243 }
1244 if (status == Flag::SUCCESS) {
1245 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find_if_needs_check(name);
1246 if (constraint != NULL) {
1247 status = constraint->apply_uint64_t(new_value, verbose);
1248 }
1249 }
1250 return status;
1251 }
1252
1253 Flag::Error CommandLineFlags::uint64_tAtPut(Flag* flag, uint64_t* value, Flag::Flags origin) {
1254 const char* name;
1255 if (flag == NULL) return Flag::INVALID_FLAG;
1256 if (!flag->is_uint64_t()) return Flag::WRONG_FORMAT;
1257 name = flag->_name;
1258 Flag::Error check = apply_constraint_and_check_range_uint64_t(name, *value, !CommandLineFlagConstraintList::validated_after_ergo());
1259 if (check != Flag::SUCCESS) return check;
1260 uint64_t old_value = flag->get_uint64_t();
1261 trace_flag_changed<EventUnsignedLongFlagChanged, u8>(name, old_value, *value, origin);
1262 check = flag->set_uint64_t(*value);
1263 *value = old_value;
1264 flag->set_origin(origin);
1265 return check;
1266 }
1267
1268 Flag::Error CommandLineFlags::uint64_tAtPut(const char* name, size_t len, uint64_t* value, Flag::Flags origin) {
1269 Flag* result = Flag::find_flag(name, len);
1270 return uint64_tAtPut(result, value, origin);
1271 }
1272
1273 Flag::Error CommandLineFlagsEx::uint64_tAtPut(CommandLineFlagWithType flag, uint64_t value, Flag::Flags origin) {
1274 Flag* faddr = address_of_flag(flag);
1275 guarantee(faddr != NULL && faddr->is_uint64_t(), "wrong flag type");
1276 return CommandLineFlags::uint64_tAtPut(faddr, &value, origin);
1277 }
1278
1279 Flag::Error CommandLineFlags::size_tAt(const char* name, size_t len, size_t* value, bool allow_locked, bool return_flag) {
1280 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag);
1281 if (result == NULL) return Flag::INVALID_FLAG;
1282 if (!result->is_size_t()) return Flag::WRONG_FORMAT;
1283 *value = result->get_size_t();
1284 return Flag::SUCCESS;
1285 }
1286
1287 static Flag::Error apply_constraint_and_check_range_size_t(const char* name, size_t new_value, bool verbose) {
1288 Flag::Error status = Flag::SUCCESS;
1289 CommandLineFlagRange* range = CommandLineFlagRangeList::find(name);
1290 if (range != NULL) {
1291 status = range->check_size_t(new_value, verbose);
1292 }
1293 if (status == Flag::SUCCESS) {
1294 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find_if_needs_check(name);
1295 if (constraint != NULL) {
1296 status = constraint->apply_size_t(new_value, verbose);
1297 }
1298 }
1299 return status;
1300 }
1301
1302
1303 Flag::Error CommandLineFlags::size_tAtPut(Flag* flag, size_t* value, Flag::Flags origin) {
1304 const char* name;
1305 if (flag == NULL) return Flag::INVALID_FLAG;
1306 if (!flag->is_size_t()) return Flag::WRONG_FORMAT;
1307 name = flag->_name;
1308 Flag::Error check = apply_constraint_and_check_range_size_t(name, *value, !CommandLineFlagConstraintList::validated_after_ergo());
1309 if (check != Flag::SUCCESS) return check;
1310 size_t old_value = flag->get_size_t();
1311 trace_flag_changed<EventUnsignedLongFlagChanged, u8>(name, old_value, *value, origin);
1312 check = flag->set_size_t(*value);
1313 *value = old_value;
1314 flag->set_origin(origin);
1315 return check;
1316 }
1317
1318 Flag::Error CommandLineFlags::size_tAtPut(const char* name, size_t len, size_t* value, Flag::Flags origin) {
1319 Flag* result = Flag::find_flag(name, len);
1320 return size_tAtPut(result, value, origin);
1321 }
1322
1323 Flag::Error CommandLineFlagsEx::size_tAtPut(CommandLineFlagWithType flag, size_t value, Flag::Flags origin) {
1324 Flag* faddr = address_of_flag(flag);
1325 guarantee(faddr != NULL && faddr->is_size_t(), "wrong flag type");
1326 return CommandLineFlags::size_tAtPut(faddr, &value, origin);
1327 }
1328
1329 Flag::Error CommandLineFlags::doubleAt(const char* name, size_t len, double* value, bool allow_locked, bool return_flag) {
1330 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag);
1331 if (result == NULL) return Flag::INVALID_FLAG;
1332 if (!result->is_double()) return Flag::WRONG_FORMAT;
1333 *value = result->get_double();
1334 return Flag::SUCCESS;
1335 }
1336
1337 static Flag::Error apply_constraint_and_check_range_double(const char* name, double new_value, bool verbose) {
1338 Flag::Error status = Flag::SUCCESS;
1339 CommandLineFlagRange* range = CommandLineFlagRangeList::find(name);
1340 if (range != NULL) {
1341 status = range->check_double(new_value, verbose);
1342 }
1343 if (status == Flag::SUCCESS) {
1344 CommandLineFlagConstraint* constraint = CommandLineFlagConstraintList::find_if_needs_check(name);
1345 if (constraint != NULL) {
1346 status = constraint->apply_double(new_value, verbose);
1347 }
1348 }
1349 return status;
1350 }
1351
1352 Flag::Error CommandLineFlags::doubleAtPut(Flag* flag, double* value, Flag::Flags origin) {
1353 const char* name;
1354 if (flag == NULL) return Flag::INVALID_FLAG;
1355 if (!flag->is_double()) return Flag::WRONG_FORMAT;
1356 name = flag->_name;
1357 Flag::Error check = apply_constraint_and_check_range_double(name, *value, !CommandLineFlagConstraintList::validated_after_ergo());
1358 if (check != Flag::SUCCESS) return check;
1359 double old_value = flag->get_double();
1360 trace_flag_changed<EventDoubleFlagChanged, double>(name, old_value, *value, origin);
1361 check = flag->set_double(*value);
1362 *value = old_value;
1363 flag->set_origin(origin);
1364 return check;
1365 }
1366
1367 Flag::Error CommandLineFlags::doubleAtPut(const char* name, size_t len, double* value, Flag::Flags origin) {
1368 Flag* result = Flag::find_flag(name, len);
1369 return doubleAtPut(result, value, origin);
1370 }
1371
1372 Flag::Error CommandLineFlagsEx::doubleAtPut(CommandLineFlagWithType flag, double value, Flag::Flags origin) {
1373 Flag* faddr = address_of_flag(flag);
1374 guarantee(faddr != NULL && faddr->is_double(), "wrong flag type");
1375 return CommandLineFlags::doubleAtPut(faddr, &value, origin);
1376 }
1377
1378 Flag::Error CommandLineFlags::ccstrAt(const char* name, size_t len, ccstr* value, bool allow_locked, bool return_flag) {
1379 Flag* result = Flag::find_flag(name, len, allow_locked, return_flag);
1380 if (result == NULL) return Flag::INVALID_FLAG;
1381 if (!result->is_ccstr()) return Flag::WRONG_FORMAT;
1382 *value = result->get_ccstr();
1383 return Flag::SUCCESS;
1384 }
1385
1386 Flag::Error CommandLineFlags::ccstrAtPut(const char* name, size_t len, ccstr* value, Flag::Flags origin) {
1387 Flag* result = Flag::find_flag(name, len);
1388 if (result == NULL) return Flag::INVALID_FLAG;
1389 if (!result->is_ccstr()) return Flag::WRONG_FORMAT;
1390 ccstr old_value = result->get_ccstr();
1391 trace_flag_changed<EventStringFlagChanged, const char*>(name, old_value, *value, origin);
1392 char* new_value = NULL;
1393 if (*value != NULL) {
1394 new_value = os::strdup_check_oom(*value);
1395 }
1396 Flag::Error check = result->set_ccstr(new_value);
1397 if (result->is_default() && old_value != NULL) {
1398 // Prior value is NOT heap allocated, but was a literal constant.
1399 old_value = os::strdup_check_oom(old_value);
1400 }
1401 *value = old_value;
1402 result->set_origin(origin);
1403 return check;
1404 }
1405
1406 Flag::Error CommandLineFlagsEx::ccstrAtPut(CommandLineFlagWithType flag, ccstr value, Flag::Flags origin) {
1407 Flag* faddr = address_of_flag(flag);
1408 guarantee(faddr != NULL && faddr->is_ccstr(), "wrong flag type");
1409 ccstr old_value = faddr->get_ccstr();
1410 trace_flag_changed<EventStringFlagChanged, const char*>(faddr->_name, old_value, value, origin);
1411 char* new_value = os::strdup_check_oom(value);
1412 Flag::Error check = faddr->set_ccstr(new_value);
1413 if (!faddr->is_default() && old_value != NULL) {
1414 // Prior value is heap allocated so free it.
1415 FREE_C_HEAP_ARRAY(char, old_value);
1416 }
1417 faddr->set_origin(origin);
1418 return check;
1419 }
1420
1421 extern "C" {
1422 static int compare_flags(const void* void_a, const void* void_b) {
1423 return strcmp((*((Flag**) void_a))->_name, (*((Flag**) void_b))->_name);
1424 }
1425 }
1426
1427 void CommandLineFlags::printSetFlags(outputStream* out) {
1428 // Print which flags were set on the command line
1429 // note: this method is called before the thread structure is in place
1430 // which means resource allocation cannot be used.
1431
1432 // The last entry is the null entry.
1433 const size_t length = Flag::numFlags - 1;
1434
1435 // Sort
1436 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length, mtArguments);
1437 for (size_t i = 0; i < length; i++) {
1438 array[i] = &flagTable[i];
1439 }
1440 qsort(array, length, sizeof(Flag*), compare_flags);
1441
1442 // Print
1443 for (size_t i = 0; i < length; i++) {
1444 if (array[i]->get_origin() /* naked field! */) {
1445 array[i]->print_as_flag(out);
1446 out->print(" ");
1447 }
1448 }
1449 out->cr();
1450 FREE_C_HEAP_ARRAY(Flag*, array);
1451 }
1452
1453 #ifndef PRODUCT
1454
1455 void CommandLineFlags::verify() {
1456 assert(Arguments::check_vm_args_consistency(), "Some flag settings conflict");
1457 }
1458
1459 #endif // PRODUCT
1460
1461 void CommandLineFlags::printFlags(outputStream* out, bool withComments, bool printRanges) {
1462 // Print the flags sorted by name
1463 // note: this method is called before the thread structure is in place
1464 // which means resource allocation cannot be used.
1465
1466 // The last entry is the null entry.
1467 const size_t length = Flag::numFlags - 1;
1468
1469 // Sort
1470 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length, mtArguments);
1471 for (size_t i = 0; i < length; i++) {
1472 array[i] = &flagTable[i];
1473 }
1474 qsort(array, length, sizeof(Flag*), compare_flags);
1475
1476 // Print
1477 if (!printRanges) {
1478 out->print_cr("[Global flags]");
1479 } else {
1480 out->print_cr("[Global flags ranges]");
1481 }
1482
1483 for (size_t i = 0; i < length; i++) {
1484 if (array[i]->is_unlocked()) {
1485 array[i]->print_on(out, withComments, printRanges);
1486 }
1487 }
1488 FREE_C_HEAP_ARRAY(Flag*, array);
1489 }