Mercurial > jdk8-mips64-public > hotspot / file revision
src/share/vm/runtime/globals.cpp@e619a2766bcc
src/share/vm/runtime/globals.cpp
Wed, 12 Jun 2013 11:17:39 +0200
- author
- rbackman
- date
- Wed, 12 Jun 2013 11:17:39 +0200
- changeset 5419
- e619a2766bcc
- parent 5343
- 6e3634222155
- child 5628
- f98f5d48f511
- permissions
- -rw-r--r--
8016131: nsk/sysdict/vm/stress/chain tests crash the VM in 'entry_frame_is_first()'
Reviewed-by: jrose, kvn, mgronlun
1 /*
2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 #include "precompiled.hpp"
26 #include "memory/allocation.inline.hpp"
27 #include "oops/oop.inline.hpp"
28 #include "runtime/arguments.hpp"
29 #include "runtime/globals.hpp"
30 #include "runtime/globals_extension.hpp"
31 #include "utilities/ostream.hpp"
32 #include "utilities/macros.hpp"
33 #include "utilities/top.hpp"
34 #if INCLUDE_ALL_GCS
35 #include "gc_implementation/g1/g1_globals.hpp"
36 #endif // INCLUDE_ALL_GCS
37 #ifdef COMPILER1
38 #include "c1/c1_globals.hpp"
39 #endif
40 #ifdef COMPILER2
41 #include "opto/c2_globals.hpp"
42 #endif
43 #ifdef SHARK
44 #include "shark/shark_globals.hpp"
45 #endif
47 RUNTIME_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PD_DEVELOPER_FLAG, \
48 MATERIALIZE_PRODUCT_FLAG, MATERIALIZE_PD_PRODUCT_FLAG, \
49 MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_EXPERIMENTAL_FLAG, \
50 MATERIALIZE_NOTPRODUCT_FLAG, \
51 MATERIALIZE_MANAGEABLE_FLAG, MATERIALIZE_PRODUCT_RW_FLAG, \
52 MATERIALIZE_LP64_PRODUCT_FLAG)
54 RUNTIME_OS_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PD_DEVELOPER_FLAG, \
55 MATERIALIZE_PRODUCT_FLAG, MATERIALIZE_PD_PRODUCT_FLAG, \
56 MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_NOTPRODUCT_FLAG)
58 ARCH_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PRODUCT_FLAG, \
59 MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_EXPERIMENTAL_FLAG, \
60 MATERIALIZE_NOTPRODUCT_FLAG)
62 MATERIALIZE_FLAGS_EXT
65 bool Flag::is_unlocker() const {
66 return strcmp(name, "UnlockDiagnosticVMOptions") == 0 ||
67 strcmp(name, "UnlockExperimentalVMOptions") == 0 ||
68 is_unlocker_ext();
69 }
71 bool Flag::is_unlocked() const {
72 if (strcmp(kind, "{diagnostic}") == 0 ||
73 strcmp(kind, "{C2 diagnostic}") == 0 ||
74 strcmp(kind, "{ARCH diagnostic}") == 0 ||
75 strcmp(kind, "{Shark diagnostic}") == 0) {
76 return UnlockDiagnosticVMOptions;
77 } else if (strcmp(kind, "{experimental}") == 0 ||
78 strcmp(kind, "{C2 experimental}") == 0 ||
79 strcmp(kind, "{ARCH experimental}") == 0 ||
80 strcmp(kind, "{Shark experimental}") == 0) {
81 return UnlockExperimentalVMOptions;
82 } else {
83 return is_unlocked_ext();
84 }
85 }
87 // Get custom message for this locked flag, or return NULL if
88 // none is available.
89 void Flag::get_locked_message(char* buf, int buflen) const {
90 get_locked_message_ext(buf, buflen);
91 }
93 bool Flag::is_writeable() const {
94 return strcmp(kind, "{manageable}") == 0 ||
95 strcmp(kind, "{product rw}") == 0 ||
96 is_writeable_ext();
97 }
99 // All flags except "manageable" are assumed to be internal flags.
100 // Long term, we need to define a mechanism to specify which flags
101 // are external/stable and change this function accordingly.
102 bool Flag::is_external() const {
103 return strcmp(kind, "{manageable}") == 0 || is_external_ext();
104 }
107 // Length of format string (e.g. "%.1234s") for printing ccstr below
108 #define FORMAT_BUFFER_LEN 16
110 void Flag::print_on(outputStream* st, bool withComments) {
111 st->print("%9s %-40s %c= ", type, name, (origin != DEFAULT ? ':' : ' '));
112 if (is_bool()) st->print("%-16s", get_bool() ? "true" : "false");
113 if (is_intx()) st->print("%-16ld", get_intx());
114 if (is_uintx()) st->print("%-16lu", get_uintx());
115 if (is_uint64_t()) st->print("%-16lu", get_uint64_t());
116 if (is_double()) st->print("%-16f", get_double());
118 if (is_ccstr()) {
119 const char* cp = get_ccstr();
120 if (cp != NULL) {
121 const char* eol;
122 while ((eol = strchr(cp, '\n')) != NULL) {
123 char format_buffer[FORMAT_BUFFER_LEN];
124 size_t llen = pointer_delta(eol, cp, sizeof(char));
125 jio_snprintf(format_buffer, FORMAT_BUFFER_LEN,
126 "%%." SIZE_FORMAT "s", llen);
127 st->print(format_buffer, cp);
128 st->cr();
129 cp = eol+1;
130 st->print("%5s %-35s += ", "", name);
131 }
132 st->print("%-16s", cp);
133 }
134 else st->print("%-16s", "");
135 }
136 st->print("%-20s", kind);
137 if (withComments) {
138 #ifndef PRODUCT
139 st->print("%s", doc );
140 #endif
141 }
142 st->cr();
143 }
145 void Flag::print_as_flag(outputStream* st) {
146 if (is_bool()) {
147 st->print("-XX:%s%s", get_bool() ? "+" : "-", name);
148 } else if (is_intx()) {
149 st->print("-XX:%s=" INTX_FORMAT, name, get_intx());
150 } else if (is_uintx()) {
151 st->print("-XX:%s=" UINTX_FORMAT, name, get_uintx());
152 } else if (is_uint64_t()) {
153 st->print("-XX:%s=" UINT64_FORMAT, name, get_uint64_t());
154 } else if (is_double()) {
155 st->print("-XX:%s=%f", name, get_double());
156 } else if (is_ccstr()) {
157 st->print("-XX:%s=", name);
158 const char* cp = get_ccstr();
159 if (cp != NULL) {
160 // Need to turn embedded '\n's back into separate arguments
161 // Not so efficient to print one character at a time,
162 // but the choice is to do the transformation to a buffer
163 // and print that. And this need not be efficient.
164 for (; *cp != '\0'; cp += 1) {
165 switch (*cp) {
166 default:
167 st->print("%c", *cp);
168 break;
169 case '\n':
170 st->print(" -XX:%s=", name);
171 break;
172 }
173 }
174 }
175 } else {
176 ShouldNotReachHere();
177 }
178 }
180 // 4991491 do not "optimize out" the was_set false values: omitting them
181 // tickles a Microsoft compiler bug causing flagTable to be malformed
183 #define RUNTIME_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{product}", DEFAULT },
184 #define RUNTIME_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{pd product}", DEFAULT },
185 #define RUNTIME_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{diagnostic}", DEFAULT },
186 #define RUNTIME_EXPERIMENTAL_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{experimental}", DEFAULT },
187 #define RUNTIME_MANAGEABLE_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{manageable}", DEFAULT },
188 #define RUNTIME_PRODUCT_RW_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{product rw}", DEFAULT },
190 #ifdef PRODUCT
191 #define RUNTIME_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
192 #define RUNTIME_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */
193 #define RUNTIME_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc)
194 #else
195 #define RUNTIME_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "", DEFAULT },
196 #define RUNTIME_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, doc, "{pd}", DEFAULT },
197 #define RUNTIME_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{notproduct}", DEFAULT },
198 #endif
200 #ifdef _LP64
201 #define RUNTIME_LP64_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{lp64_product}", DEFAULT },
202 #else
203 #define RUNTIME_LP64_PRODUCT_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
204 #endif // _LP64
206 #define C1_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C1 product}", DEFAULT },
207 #define C1_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C1 pd product}", DEFAULT },
208 #ifdef PRODUCT
209 #define C1_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
210 #define C1_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */
211 #define C1_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc)
212 #else
213 #define C1_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{C1}", DEFAULT },
214 #define C1_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, doc, "{C1 pd}", DEFAULT },
215 #define C1_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{C1 notproduct}", DEFAULT },
216 #endif
218 #define C2_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C2 product}", DEFAULT },
219 #define C2_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C2 pd product}", DEFAULT },
220 #define C2_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C2 diagnostic}", DEFAULT },
221 #define C2_EXPERIMENTAL_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C2 experimental}", DEFAULT },
222 #ifdef PRODUCT
223 #define C2_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
224 #define C2_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */
225 #define C2_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc)
226 #else
227 #define C2_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{C2}", DEFAULT },
228 #define C2_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, doc, "{C2 pd}", DEFAULT },
229 #define C2_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{C2 notproduct}", DEFAULT },
230 #endif
232 #define ARCH_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{ARCH product}", DEFAULT },
233 #define ARCH_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{ARCH diagnostic}", DEFAULT },
234 #define ARCH_EXPERIMENTAL_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{ARCH experimental}", DEFAULT },
235 #ifdef PRODUCT
236 #define ARCH_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
237 #define ARCH_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc)
238 #else
239 #define ARCH_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{ARCH}", DEFAULT },
240 #define ARCH_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{ARCH notproduct}", DEFAULT },
241 #endif
243 #define SHARK_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{Shark product}", DEFAULT },
244 #define SHARK_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{Shark pd product}", DEFAULT },
245 #define SHARK_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{Shark diagnostic}", DEFAULT },
246 #ifdef PRODUCT
247 #define SHARK_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
248 #define SHARK_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */
249 #define SHARK_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc)
250 #else
251 #define SHARK_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{Shark}", DEFAULT },
252 #define SHARK_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, doc, "{Shark pd}", DEFAULT },
253 #define SHARK_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{Shark notproduct}", DEFAULT },
254 #endif
256 static Flag flagTable[] = {
257 RUNTIME_FLAGS(RUNTIME_DEVELOP_FLAG_STRUCT, RUNTIME_PD_DEVELOP_FLAG_STRUCT, RUNTIME_PRODUCT_FLAG_STRUCT, RUNTIME_PD_PRODUCT_FLAG_STRUCT, RUNTIME_DIAGNOSTIC_FLAG_STRUCT, RUNTIME_EXPERIMENTAL_FLAG_STRUCT, RUNTIME_NOTPRODUCT_FLAG_STRUCT, RUNTIME_MANAGEABLE_FLAG_STRUCT, RUNTIME_PRODUCT_RW_FLAG_STRUCT, RUNTIME_LP64_PRODUCT_FLAG_STRUCT)
258 RUNTIME_OS_FLAGS(RUNTIME_DEVELOP_FLAG_STRUCT, RUNTIME_PD_DEVELOP_FLAG_STRUCT, RUNTIME_PRODUCT_FLAG_STRUCT, RUNTIME_PD_PRODUCT_FLAG_STRUCT, RUNTIME_DIAGNOSTIC_FLAG_STRUCT, RUNTIME_NOTPRODUCT_FLAG_STRUCT)
259 #if INCLUDE_ALL_GCS
260 G1_FLAGS(RUNTIME_DEVELOP_FLAG_STRUCT, RUNTIME_PD_DEVELOP_FLAG_STRUCT, RUNTIME_PRODUCT_FLAG_STRUCT, RUNTIME_PD_PRODUCT_FLAG_STRUCT, RUNTIME_DIAGNOSTIC_FLAG_STRUCT, RUNTIME_EXPERIMENTAL_FLAG_STRUCT, RUNTIME_NOTPRODUCT_FLAG_STRUCT, RUNTIME_MANAGEABLE_FLAG_STRUCT, RUNTIME_PRODUCT_RW_FLAG_STRUCT)
261 #endif // INCLUDE_ALL_GCS
262 #ifdef COMPILER1
263 C1_FLAGS(C1_DEVELOP_FLAG_STRUCT, C1_PD_DEVELOP_FLAG_STRUCT, C1_PRODUCT_FLAG_STRUCT, C1_PD_PRODUCT_FLAG_STRUCT, C1_NOTPRODUCT_FLAG_STRUCT)
264 #endif
265 #ifdef COMPILER2
266 C2_FLAGS(C2_DEVELOP_FLAG_STRUCT, C2_PD_DEVELOP_FLAG_STRUCT, C2_PRODUCT_FLAG_STRUCT, C2_PD_PRODUCT_FLAG_STRUCT, C2_DIAGNOSTIC_FLAG_STRUCT, C2_EXPERIMENTAL_FLAG_STRUCT, C2_NOTPRODUCT_FLAG_STRUCT)
267 #endif
268 #ifdef SHARK
269 SHARK_FLAGS(SHARK_DEVELOP_FLAG_STRUCT, SHARK_PD_DEVELOP_FLAG_STRUCT, SHARK_PRODUCT_FLAG_STRUCT, SHARK_PD_PRODUCT_FLAG_STRUCT, SHARK_DIAGNOSTIC_FLAG_STRUCT, SHARK_NOTPRODUCT_FLAG_STRUCT)
270 #endif
271 ARCH_FLAGS(ARCH_DEVELOP_FLAG_STRUCT, ARCH_PRODUCT_FLAG_STRUCT, ARCH_DIAGNOSTIC_FLAG_STRUCT, ARCH_EXPERIMENTAL_FLAG_STRUCT, ARCH_NOTPRODUCT_FLAG_STRUCT)
272 FLAGTABLE_EXT
273 {0, NULL, NULL}
274 };
276 Flag* Flag::flags = flagTable;
277 size_t Flag::numFlags = (sizeof(flagTable) / sizeof(Flag));
279 inline bool str_equal(const char* s, const char* q, size_t len) {
280 // s is null terminated, q is not!
281 if (strlen(s) != (unsigned int) len) return false;
282 return strncmp(s, q, len) == 0;
283 }
285 // Search the flag table for a named flag
286 Flag* Flag::find_flag(const char* name, size_t length, bool allow_locked) {
287 for (Flag* current = &flagTable[0]; current->name != NULL; current++) {
288 if (str_equal(current->name, name, length)) {
289 // Found a matching entry. Report locked flags only if allowed.
290 if (!(current->is_unlocked() || current->is_unlocker())) {
291 if (!allow_locked) {
292 // disable use of locked flags, e.g. diagnostic, experimental,
293 // commercial... until they are explicitly unlocked
294 return NULL;
295 }
296 }
297 return current;
298 }
299 }
300 // Flag name is not in the flag table
301 return NULL;
302 }
304 // Compute string similarity based on Dice's coefficient
305 static float str_similar(const char* str1, const char* str2, size_t len2) {
306 int len1 = (int) strlen(str1);
307 int total = len1 + (int) len2;
309 int hit = 0;
311 for (int i = 0; i < len1 -1; ++i) {
312 for (int j = 0; j < (int) len2 -1; ++j) {
313 if ((str1[i] == str2[j]) && (str1[i+1] == str2[j+1])) {
314 ++hit;
315 break;
316 }
317 }
318 }
320 return 2.0f * (float) hit / (float) total;
321 }
323 Flag* Flag::fuzzy_match(const char* name, size_t length, bool allow_locked) {
324 float VMOptionsFuzzyMatchSimilarity = 0.7f;
325 Flag* match = NULL;
326 float score;
327 float max_score = -1;
329 for (Flag* current = &flagTable[0]; current->name != NULL; current++) {
330 score = str_similar(current->name, name, length);
331 if (score > max_score) {
332 max_score = score;
333 match = current;
334 }
335 }
337 if (!(match->is_unlocked() || match->is_unlocker())) {
338 if (!allow_locked) {
339 return NULL;
340 }
341 }
343 if (max_score < VMOptionsFuzzyMatchSimilarity) {
344 return NULL;
345 }
347 return match;
348 }
350 // Returns the address of the index'th element
351 static Flag* address_of_flag(CommandLineFlagWithType flag) {
352 assert((size_t)flag < Flag::numFlags, "bad command line flag index");
353 return &Flag::flags[flag];
354 }
356 bool CommandLineFlagsEx::is_default(CommandLineFlag flag) {
357 assert((size_t)flag < Flag::numFlags, "bad command line flag index");
358 Flag* f = &Flag::flags[flag];
359 return (f->origin == DEFAULT);
360 }
362 bool CommandLineFlagsEx::is_ergo(CommandLineFlag flag) {
363 assert((size_t)flag < Flag::numFlags, "bad command line flag index");
364 Flag* f = &Flag::flags[flag];
365 return (f->origin == ERGONOMIC);
366 }
368 bool CommandLineFlagsEx::is_cmdline(CommandLineFlag flag) {
369 assert((size_t)flag < Flag::numFlags, "bad command line flag index");
370 Flag* f = &Flag::flags[flag];
371 return (f->origin == COMMAND_LINE);
372 }
374 bool CommandLineFlags::wasSetOnCmdline(const char* name, bool* value) {
375 Flag* result = Flag::find_flag((char*)name, strlen(name));
376 if (result == NULL) return false;
377 *value = (result->origin == COMMAND_LINE);
378 return true;
379 }
381 bool CommandLineFlags::boolAt(char* name, size_t len, bool* value) {
382 Flag* result = Flag::find_flag(name, len);
383 if (result == NULL) return false;
384 if (!result->is_bool()) return false;
385 *value = result->get_bool();
386 return true;
387 }
389 bool CommandLineFlags::boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin) {
390 Flag* result = Flag::find_flag(name, len);
391 if (result == NULL) return false;
392 if (!result->is_bool()) return false;
393 bool old_value = result->get_bool();
394 result->set_bool(*value);
395 *value = old_value;
396 result->origin = origin;
397 return true;
398 }
400 void CommandLineFlagsEx::boolAtPut(CommandLineFlagWithType flag, bool value, FlagValueOrigin origin) {
401 Flag* faddr = address_of_flag(flag);
402 guarantee(faddr != NULL && faddr->is_bool(), "wrong flag type");
403 faddr->set_bool(value);
404 faddr->origin = origin;
405 }
407 bool CommandLineFlags::intxAt(char* name, size_t len, intx* value) {
408 Flag* result = Flag::find_flag(name, len);
409 if (result == NULL) return false;
410 if (!result->is_intx()) return false;
411 *value = result->get_intx();
412 return true;
413 }
415 bool CommandLineFlags::intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin) {
416 Flag* result = Flag::find_flag(name, len);
417 if (result == NULL) return false;
418 if (!result->is_intx()) return false;
419 intx old_value = result->get_intx();
420 result->set_intx(*value);
421 *value = old_value;
422 result->origin = origin;
423 return true;
424 }
426 void CommandLineFlagsEx::intxAtPut(CommandLineFlagWithType flag, intx value, FlagValueOrigin origin) {
427 Flag* faddr = address_of_flag(flag);
428 guarantee(faddr != NULL && faddr->is_intx(), "wrong flag type");
429 faddr->set_intx(value);
430 faddr->origin = origin;
431 }
433 bool CommandLineFlags::uintxAt(char* name, size_t len, uintx* value) {
434 Flag* result = Flag::find_flag(name, len);
435 if (result == NULL) return false;
436 if (!result->is_uintx()) return false;
437 *value = result->get_uintx();
438 return true;
439 }
441 bool CommandLineFlags::uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin) {
442 Flag* result = Flag::find_flag(name, len);
443 if (result == NULL) return false;
444 if (!result->is_uintx()) return false;
445 uintx old_value = result->get_uintx();
446 result->set_uintx(*value);
447 *value = old_value;
448 result->origin = origin;
449 return true;
450 }
452 void CommandLineFlagsEx::uintxAtPut(CommandLineFlagWithType flag, uintx value, FlagValueOrigin origin) {
453 Flag* faddr = address_of_flag(flag);
454 guarantee(faddr != NULL && faddr->is_uintx(), "wrong flag type");
455 faddr->set_uintx(value);
456 faddr->origin = origin;
457 }
459 bool CommandLineFlags::uint64_tAt(char* name, size_t len, uint64_t* value) {
460 Flag* result = Flag::find_flag(name, len);
461 if (result == NULL) return false;
462 if (!result->is_uint64_t()) return false;
463 *value = result->get_uint64_t();
464 return true;
465 }
467 bool CommandLineFlags::uint64_tAtPut(char* name, size_t len, uint64_t* value, FlagValueOrigin origin) {
468 Flag* result = Flag::find_flag(name, len);
469 if (result == NULL) return false;
470 if (!result->is_uint64_t()) return false;
471 uint64_t old_value = result->get_uint64_t();
472 result->set_uint64_t(*value);
473 *value = old_value;
474 result->origin = origin;
475 return true;
476 }
478 void CommandLineFlagsEx::uint64_tAtPut(CommandLineFlagWithType flag, uint64_t value, FlagValueOrigin origin) {
479 Flag* faddr = address_of_flag(flag);
480 guarantee(faddr != NULL && faddr->is_uint64_t(), "wrong flag type");
481 faddr->set_uint64_t(value);
482 faddr->origin = origin;
483 }
485 bool CommandLineFlags::doubleAt(char* name, size_t len, double* value) {
486 Flag* result = Flag::find_flag(name, len);
487 if (result == NULL) return false;
488 if (!result->is_double()) return false;
489 *value = result->get_double();
490 return true;
491 }
493 bool CommandLineFlags::doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin) {
494 Flag* result = Flag::find_flag(name, len);
495 if (result == NULL) return false;
496 if (!result->is_double()) return false;
497 double old_value = result->get_double();
498 result->set_double(*value);
499 *value = old_value;
500 result->origin = origin;
501 return true;
502 }
504 void CommandLineFlagsEx::doubleAtPut(CommandLineFlagWithType flag, double value, FlagValueOrigin origin) {
505 Flag* faddr = address_of_flag(flag);
506 guarantee(faddr != NULL && faddr->is_double(), "wrong flag type");
507 faddr->set_double(value);
508 faddr->origin = origin;
509 }
511 bool CommandLineFlags::ccstrAt(char* name, size_t len, ccstr* value) {
512 Flag* result = Flag::find_flag(name, len);
513 if (result == NULL) return false;
514 if (!result->is_ccstr()) return false;
515 *value = result->get_ccstr();
516 return true;
517 }
519 // Contract: Flag will make private copy of the incoming value.
520 // Outgoing value is always malloc-ed, and caller MUST call free.
521 bool CommandLineFlags::ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin) {
522 Flag* result = Flag::find_flag(name, len);
523 if (result == NULL) return false;
524 if (!result->is_ccstr()) return false;
525 ccstr old_value = result->get_ccstr();
526 char* new_value = NULL;
527 if (*value != NULL) {
528 new_value = NEW_C_HEAP_ARRAY(char, strlen(*value)+1, mtInternal);
529 strcpy(new_value, *value);
530 }
531 result->set_ccstr(new_value);
532 if (result->origin == DEFAULT && old_value != NULL) {
533 // Prior value is NOT heap allocated, but was a literal constant.
534 char* old_value_to_free = NEW_C_HEAP_ARRAY(char, strlen(old_value)+1, mtInternal);
535 strcpy(old_value_to_free, old_value);
536 old_value = old_value_to_free;
537 }
538 *value = old_value;
539 result->origin = origin;
540 return true;
541 }
543 // Contract: Flag will make private copy of the incoming value.
544 void CommandLineFlagsEx::ccstrAtPut(CommandLineFlagWithType flag, ccstr value, FlagValueOrigin origin) {
545 Flag* faddr = address_of_flag(flag);
546 guarantee(faddr != NULL && faddr->is_ccstr(), "wrong flag type");
547 ccstr old_value = faddr->get_ccstr();
548 char* new_value = NEW_C_HEAP_ARRAY(char, strlen(value)+1, mtInternal);
549 strcpy(new_value, value);
550 faddr->set_ccstr(new_value);
551 if (faddr->origin != DEFAULT && old_value != NULL) {
552 // Prior value is heap allocated so free it.
553 FREE_C_HEAP_ARRAY(char, old_value, mtInternal);
554 }
555 faddr->origin = origin;
556 }
558 extern "C" {
559 static int compare_flags(const void* void_a, const void* void_b) {
560 return strcmp((*((Flag**) void_a))->name, (*((Flag**) void_b))->name);
561 }
562 }
564 void CommandLineFlags::printSetFlags(outputStream* out) {
565 // Print which flags were set on the command line
566 // note: this method is called before the thread structure is in place
567 // which means resource allocation cannot be used.
569 // Compute size
570 int length= 0;
571 while (flagTable[length].name != NULL) length++;
573 // Sort
574 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length, mtInternal);
575 for (int index = 0; index < length; index++) {
576 array[index] = &flagTable[index];
577 }
578 qsort(array, length, sizeof(Flag*), compare_flags);
580 // Print
581 for (int i = 0; i < length; i++) {
582 if (array[i]->origin /* naked field! */) {
583 array[i]->print_as_flag(out);
584 out->print(" ");
585 }
586 }
587 out->cr();
588 FREE_C_HEAP_ARRAY(Flag*, array, mtInternal);
589 }
591 #ifndef PRODUCT
594 void CommandLineFlags::verify() {
595 assert(Arguments::check_vm_args_consistency(), "Some flag settings conflict");
596 }
598 #endif // PRODUCT
600 void CommandLineFlags::printFlags(outputStream* out, bool withComments) {
601 // Print the flags sorted by name
602 // note: this method is called before the thread structure is in place
603 // which means resource allocation cannot be used.
605 // Compute size
606 int length= 0;
607 while (flagTable[length].name != NULL) length++;
609 // Sort
610 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length, mtInternal);
611 for (int index = 0; index < length; index++) {
612 array[index] = &flagTable[index];
613 }
614 qsort(array, length, sizeof(Flag*), compare_flags);
616 // Print
617 out->print_cr("[Global flags]");
618 for (int i = 0; i < length; i++) {
619 if (array[i]->is_unlocked()) {
620 array[i]->print_on(out, withComments);
621 }
622 }
623 FREE_C_HEAP_ARRAY(Flag*, array, mtInternal);
624 }
