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