Mercurial > jdk8-mips64-public > hotspot / file revision
src/share/vm/runtime/globals.cpp@64d2a0a39954
src/share/vm/runtime/globals.cpp
Sun, 10 Feb 2013 22:35:38 -0800
- author
- kmo
- date
- Sun, 10 Feb 2013 22:35:38 -0800
- changeset 4586
- 64d2a0a39954
- parent 4542
- db9981fd3124
- child 5301
- b3cd8b58b798
- permissions
- -rw-r--r--
8006430: TraceTypeProfile is a product flag while it should be a diagnostic flag
Summary: make sure all diagnostic and experimental flag kinds are checked in Flag::is_unlocked()
Reviewed-by: kvn
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 if (strcmp(name, "EnableInvokeDynamic") == 0 && UnlockExperimentalVMOptions && !UnlockDiagnosticVMOptions) {
77 // transitional logic to allow tests to run until they are changed
78 static int warned;
79 if (++warned == 1) warning("Use -XX:+UnlockDiagnosticVMOptions before EnableInvokeDynamic flag");
80 return true;
81 }
82 return UnlockDiagnosticVMOptions;
83 } else if (strcmp(kind, "{experimental}") == 0 ||
84 strcmp(kind, "{C2 experimental}") == 0 ||
85 strcmp(kind, "{ARCH experimental}") == 0 ||
86 strcmp(kind, "{Shark experimental}") == 0) {
87 return UnlockExperimentalVMOptions;
88 } else {
89 return is_unlocked_ext();
90 }
91 }
93 // Get custom message for this locked flag, or return NULL if
94 // none is available.
95 void Flag::get_locked_message(char* buf, int buflen) const {
96 get_locked_message_ext(buf, buflen);
97 }
99 bool Flag::is_writeable() const {
100 return strcmp(kind, "{manageable}") == 0 ||
101 strcmp(kind, "{product rw}") == 0 ||
102 is_writeable_ext();
103 }
105 // All flags except "manageable" are assumed to be internal flags.
106 // Long term, we need to define a mechanism to specify which flags
107 // are external/stable and change this function accordingly.
108 bool Flag::is_external() const {
109 return strcmp(kind, "{manageable}") == 0 || is_external_ext();
110 }
113 // Length of format string (e.g. "%.1234s") for printing ccstr below
114 #define FORMAT_BUFFER_LEN 16
116 void Flag::print_on(outputStream* st, bool withComments) {
117 st->print("%9s %-40s %c= ", type, name, (origin != DEFAULT ? ':' : ' '));
118 if (is_bool()) st->print("%-16s", get_bool() ? "true" : "false");
119 if (is_intx()) st->print("%-16ld", get_intx());
120 if (is_uintx()) st->print("%-16lu", get_uintx());
121 if (is_uint64_t()) st->print("%-16lu", get_uint64_t());
122 if (is_double()) st->print("%-16f", get_double());
124 if (is_ccstr()) {
125 const char* cp = get_ccstr();
126 if (cp != NULL) {
127 const char* eol;
128 while ((eol = strchr(cp, '\n')) != NULL) {
129 char format_buffer[FORMAT_BUFFER_LEN];
130 size_t llen = pointer_delta(eol, cp, sizeof(char));
131 jio_snprintf(format_buffer, FORMAT_BUFFER_LEN,
132 "%%." SIZE_FORMAT "s", llen);
133 st->print(format_buffer, cp);
134 st->cr();
135 cp = eol+1;
136 st->print("%5s %-35s += ", "", name);
137 }
138 st->print("%-16s", cp);
139 }
140 else st->print("%-16s", "");
141 }
142 st->print("%-20s", kind);
143 if (withComments) {
144 #ifndef PRODUCT
145 st->print("%s", doc );
146 #endif
147 }
148 st->cr();
149 }
151 void Flag::print_as_flag(outputStream* st) {
152 if (is_bool()) {
153 st->print("-XX:%s%s", get_bool() ? "+" : "-", name);
154 } else if (is_intx()) {
155 st->print("-XX:%s=" INTX_FORMAT, name, get_intx());
156 } else if (is_uintx()) {
157 st->print("-XX:%s=" UINTX_FORMAT, name, get_uintx());
158 } else if (is_uint64_t()) {
159 st->print("-XX:%s=" UINT64_FORMAT, name, get_uint64_t());
160 } else if (is_double()) {
161 st->print("-XX:%s=%f", name, get_double());
162 } else if (is_ccstr()) {
163 st->print("-XX:%s=", name);
164 const char* cp = get_ccstr();
165 if (cp != NULL) {
166 // Need to turn embedded '\n's back into separate arguments
167 // Not so efficient to print one character at a time,
168 // but the choice is to do the transformation to a buffer
169 // and print that. And this need not be efficient.
170 for (; *cp != '\0'; cp += 1) {
171 switch (*cp) {
172 default:
173 st->print("%c", *cp);
174 break;
175 case '\n':
176 st->print(" -XX:%s=", name);
177 break;
178 }
179 }
180 }
181 } else {
182 ShouldNotReachHere();
183 }
184 }
186 // 4991491 do not "optimize out" the was_set false values: omitting them
187 // tickles a Microsoft compiler bug causing flagTable to be malformed
189 #define RUNTIME_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{product}", DEFAULT },
190 #define RUNTIME_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{pd product}", DEFAULT },
191 #define RUNTIME_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{diagnostic}", DEFAULT },
192 #define RUNTIME_EXPERIMENTAL_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{experimental}", DEFAULT },
193 #define RUNTIME_MANAGEABLE_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{manageable}", DEFAULT },
194 #define RUNTIME_PRODUCT_RW_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{product rw}", DEFAULT },
196 #ifdef PRODUCT
197 #define RUNTIME_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
198 #define RUNTIME_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */
199 #define RUNTIME_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc)
200 #else
201 #define RUNTIME_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "", DEFAULT },
202 #define RUNTIME_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, doc, "{pd}", DEFAULT },
203 #define RUNTIME_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{notproduct}", DEFAULT },
204 #endif
206 #ifdef _LP64
207 #define RUNTIME_LP64_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{lp64_product}", DEFAULT },
208 #else
209 #define RUNTIME_LP64_PRODUCT_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
210 #endif // _LP64
212 #define C1_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C1 product}", DEFAULT },
213 #define C1_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C1 pd product}", DEFAULT },
214 #ifdef PRODUCT
215 #define C1_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
216 #define C1_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */
217 #define C1_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc)
218 #else
219 #define C1_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{C1}", DEFAULT },
220 #define C1_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, doc, "{C1 pd}", DEFAULT },
221 #define C1_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{C1 notproduct}", DEFAULT },
222 #endif
224 #define C2_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C2 product}", DEFAULT },
225 #define C2_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C2 pd product}", DEFAULT },
226 #define C2_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C2 diagnostic}", DEFAULT },
227 #define C2_EXPERIMENTAL_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C2 experimental}", DEFAULT },
228 #ifdef PRODUCT
229 #define C2_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
230 #define C2_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */
231 #define C2_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc)
232 #else
233 #define C2_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{C2}", DEFAULT },
234 #define C2_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, doc, "{C2 pd}", DEFAULT },
235 #define C2_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{C2 notproduct}", DEFAULT },
236 #endif
238 #define ARCH_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{ARCH product}", DEFAULT },
239 #define ARCH_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{ARCH diagnostic}", DEFAULT },
240 #define ARCH_EXPERIMENTAL_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{ARCH experimental}", DEFAULT },
241 #ifdef PRODUCT
242 #define ARCH_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
243 #define ARCH_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc)
244 #else
245 #define ARCH_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{ARCH}", DEFAULT },
246 #define ARCH_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{ARCH notproduct}", DEFAULT },
247 #endif
249 #define SHARK_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{Shark product}", DEFAULT },
250 #define SHARK_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{Shark pd product}", DEFAULT },
251 #define SHARK_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{Shark diagnostic}", DEFAULT },
252 #ifdef PRODUCT
253 #define SHARK_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
254 #define SHARK_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */
255 #define SHARK_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc)
256 #else
257 #define SHARK_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{Shark}", DEFAULT },
258 #define SHARK_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, doc, "{Shark pd}", DEFAULT },
259 #define SHARK_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{Shark notproduct}", DEFAULT },
260 #endif
262 static Flag flagTable[] = {
263 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)
264 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)
265 #if INCLUDE_ALL_GCS
266 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)
267 #endif // INCLUDE_ALL_GCS
268 #ifdef COMPILER1
269 C1_FLAGS(C1_DEVELOP_FLAG_STRUCT, C1_PD_DEVELOP_FLAG_STRUCT, C1_PRODUCT_FLAG_STRUCT, C1_PD_PRODUCT_FLAG_STRUCT, C1_NOTPRODUCT_FLAG_STRUCT)
270 #endif
271 #ifdef COMPILER2
272 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)
273 #endif
274 #ifdef SHARK
275 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)
276 #endif
277 ARCH_FLAGS(ARCH_DEVELOP_FLAG_STRUCT, ARCH_PRODUCT_FLAG_STRUCT, ARCH_DIAGNOSTIC_FLAG_STRUCT, ARCH_EXPERIMENTAL_FLAG_STRUCT, ARCH_NOTPRODUCT_FLAG_STRUCT)
278 FLAGTABLE_EXT
279 {0, NULL, NULL}
280 };
282 Flag* Flag::flags = flagTable;
283 size_t Flag::numFlags = (sizeof(flagTable) / sizeof(Flag));
285 inline bool str_equal(const char* s, char* q, size_t len) {
286 // s is null terminated, q is not!
287 if (strlen(s) != (unsigned int) len) return false;
288 return strncmp(s, q, len) == 0;
289 }
291 // Search the flag table for a named flag
292 Flag* Flag::find_flag(char* name, size_t length, bool allow_locked) {
293 for (Flag* current = &flagTable[0]; current->name != NULL; current++) {
294 if (str_equal(current->name, name, length)) {
295 // Found a matching entry. Report locked flags only if allowed.
296 if (!(current->is_unlocked() || current->is_unlocker())) {
297 if (!allow_locked) {
298 // disable use of locked flags, e.g. diagnostic, experimental,
299 // commercial... until they are explicitly unlocked
300 return NULL;
301 }
302 }
303 return current;
304 }
305 }
306 // Flag name is not in the flag table
307 return NULL;
308 }
310 // Returns the address of the index'th element
311 static Flag* address_of_flag(CommandLineFlagWithType flag) {
312 assert((size_t)flag < Flag::numFlags, "bad command line flag index");
313 return &Flag::flags[flag];
314 }
316 bool CommandLineFlagsEx::is_default(CommandLineFlag flag) {
317 assert((size_t)flag < Flag::numFlags, "bad command line flag index");
318 Flag* f = &Flag::flags[flag];
319 return (f->origin == DEFAULT);
320 }
322 bool CommandLineFlagsEx::is_ergo(CommandLineFlag flag) {
323 assert((size_t)flag < Flag::numFlags, "bad command line flag index");
324 Flag* f = &Flag::flags[flag];
325 return (f->origin == ERGONOMIC);
326 }
328 bool CommandLineFlagsEx::is_cmdline(CommandLineFlag flag) {
329 assert((size_t)flag < Flag::numFlags, "bad command line flag index");
330 Flag* f = &Flag::flags[flag];
331 return (f->origin == COMMAND_LINE);
332 }
334 bool CommandLineFlags::wasSetOnCmdline(const char* name, bool* value) {
335 Flag* result = Flag::find_flag((char*)name, strlen(name));
336 if (result == NULL) return false;
337 *value = (result->origin == COMMAND_LINE);
338 return true;
339 }
341 bool CommandLineFlags::boolAt(char* name, size_t len, bool* value) {
342 Flag* result = Flag::find_flag(name, len);
343 if (result == NULL) return false;
344 if (!result->is_bool()) return false;
345 *value = result->get_bool();
346 return true;
347 }
349 bool CommandLineFlags::boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin) {
350 Flag* result = Flag::find_flag(name, len);
351 if (result == NULL) return false;
352 if (!result->is_bool()) return false;
353 bool old_value = result->get_bool();
354 result->set_bool(*value);
355 *value = old_value;
356 result->origin = origin;
357 return true;
358 }
360 void CommandLineFlagsEx::boolAtPut(CommandLineFlagWithType flag, bool value, FlagValueOrigin origin) {
361 Flag* faddr = address_of_flag(flag);
362 guarantee(faddr != NULL && faddr->is_bool(), "wrong flag type");
363 faddr->set_bool(value);
364 faddr->origin = origin;
365 }
367 bool CommandLineFlags::intxAt(char* name, size_t len, intx* value) {
368 Flag* result = Flag::find_flag(name, len);
369 if (result == NULL) return false;
370 if (!result->is_intx()) return false;
371 *value = result->get_intx();
372 return true;
373 }
375 bool CommandLineFlags::intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin) {
376 Flag* result = Flag::find_flag(name, len);
377 if (result == NULL) return false;
378 if (!result->is_intx()) return false;
379 intx old_value = result->get_intx();
380 result->set_intx(*value);
381 *value = old_value;
382 result->origin = origin;
383 return true;
384 }
386 void CommandLineFlagsEx::intxAtPut(CommandLineFlagWithType flag, intx value, FlagValueOrigin origin) {
387 Flag* faddr = address_of_flag(flag);
388 guarantee(faddr != NULL && faddr->is_intx(), "wrong flag type");
389 faddr->set_intx(value);
390 faddr->origin = origin;
391 }
393 bool CommandLineFlags::uintxAt(char* name, size_t len, uintx* value) {
394 Flag* result = Flag::find_flag(name, len);
395 if (result == NULL) return false;
396 if (!result->is_uintx()) return false;
397 *value = result->get_uintx();
398 return true;
399 }
401 bool CommandLineFlags::uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin) {
402 Flag* result = Flag::find_flag(name, len);
403 if (result == NULL) return false;
404 if (!result->is_uintx()) return false;
405 uintx old_value = result->get_uintx();
406 result->set_uintx(*value);
407 *value = old_value;
408 result->origin = origin;
409 return true;
410 }
412 void CommandLineFlagsEx::uintxAtPut(CommandLineFlagWithType flag, uintx value, FlagValueOrigin origin) {
413 Flag* faddr = address_of_flag(flag);
414 guarantee(faddr != NULL && faddr->is_uintx(), "wrong flag type");
415 faddr->set_uintx(value);
416 faddr->origin = origin;
417 }
419 bool CommandLineFlags::uint64_tAt(char* name, size_t len, uint64_t* value) {
420 Flag* result = Flag::find_flag(name, len);
421 if (result == NULL) return false;
422 if (!result->is_uint64_t()) return false;
423 *value = result->get_uint64_t();
424 return true;
425 }
427 bool CommandLineFlags::uint64_tAtPut(char* name, size_t len, uint64_t* value, FlagValueOrigin origin) {
428 Flag* result = Flag::find_flag(name, len);
429 if (result == NULL) return false;
430 if (!result->is_uint64_t()) return false;
431 uint64_t old_value = result->get_uint64_t();
432 result->set_uint64_t(*value);
433 *value = old_value;
434 result->origin = origin;
435 return true;
436 }
438 void CommandLineFlagsEx::uint64_tAtPut(CommandLineFlagWithType flag, uint64_t value, FlagValueOrigin origin) {
439 Flag* faddr = address_of_flag(flag);
440 guarantee(faddr != NULL && faddr->is_uint64_t(), "wrong flag type");
441 faddr->set_uint64_t(value);
442 faddr->origin = origin;
443 }
445 bool CommandLineFlags::doubleAt(char* name, size_t len, double* value) {
446 Flag* result = Flag::find_flag(name, len);
447 if (result == NULL) return false;
448 if (!result->is_double()) return false;
449 *value = result->get_double();
450 return true;
451 }
453 bool CommandLineFlags::doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin) {
454 Flag* result = Flag::find_flag(name, len);
455 if (result == NULL) return false;
456 if (!result->is_double()) return false;
457 double old_value = result->get_double();
458 result->set_double(*value);
459 *value = old_value;
460 result->origin = origin;
461 return true;
462 }
464 void CommandLineFlagsEx::doubleAtPut(CommandLineFlagWithType flag, double value, FlagValueOrigin origin) {
465 Flag* faddr = address_of_flag(flag);
466 guarantee(faddr != NULL && faddr->is_double(), "wrong flag type");
467 faddr->set_double(value);
468 faddr->origin = origin;
469 }
471 bool CommandLineFlags::ccstrAt(char* name, size_t len, ccstr* value) {
472 Flag* result = Flag::find_flag(name, len);
473 if (result == NULL) return false;
474 if (!result->is_ccstr()) return false;
475 *value = result->get_ccstr();
476 return true;
477 }
479 // Contract: Flag will make private copy of the incoming value.
480 // Outgoing value is always malloc-ed, and caller MUST call free.
481 bool CommandLineFlags::ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin) {
482 Flag* result = Flag::find_flag(name, len);
483 if (result == NULL) return false;
484 if (!result->is_ccstr()) return false;
485 ccstr old_value = result->get_ccstr();
486 char* new_value = NULL;
487 if (*value != NULL) {
488 new_value = NEW_C_HEAP_ARRAY(char, strlen(*value)+1, mtInternal);
489 strcpy(new_value, *value);
490 }
491 result->set_ccstr(new_value);
492 if (result->origin == DEFAULT && old_value != NULL) {
493 // Prior value is NOT heap allocated, but was a literal constant.
494 char* old_value_to_free = NEW_C_HEAP_ARRAY(char, strlen(old_value)+1, mtInternal);
495 strcpy(old_value_to_free, old_value);
496 old_value = old_value_to_free;
497 }
498 *value = old_value;
499 result->origin = origin;
500 return true;
501 }
503 // Contract: Flag will make private copy of the incoming value.
504 void CommandLineFlagsEx::ccstrAtPut(CommandLineFlagWithType flag, ccstr value, FlagValueOrigin origin) {
505 Flag* faddr = address_of_flag(flag);
506 guarantee(faddr != NULL && faddr->is_ccstr(), "wrong flag type");
507 ccstr old_value = faddr->get_ccstr();
508 char* new_value = NEW_C_HEAP_ARRAY(char, strlen(value)+1, mtInternal);
509 strcpy(new_value, value);
510 faddr->set_ccstr(new_value);
511 if (faddr->origin != DEFAULT && old_value != NULL) {
512 // Prior value is heap allocated so free it.
513 FREE_C_HEAP_ARRAY(char, old_value, mtInternal);
514 }
515 faddr->origin = origin;
516 }
518 extern "C" {
519 static int compare_flags(const void* void_a, const void* void_b) {
520 return strcmp((*((Flag**) void_a))->name, (*((Flag**) void_b))->name);
521 }
522 }
524 void CommandLineFlags::printSetFlags(outputStream* out) {
525 // Print which flags were set on the command line
526 // note: this method is called before the thread structure is in place
527 // which means resource allocation cannot be used.
529 // Compute size
530 int length= 0;
531 while (flagTable[length].name != NULL) length++;
533 // Sort
534 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length, mtInternal);
535 for (int index = 0; index < length; index++) {
536 array[index] = &flagTable[index];
537 }
538 qsort(array, length, sizeof(Flag*), compare_flags);
540 // Print
541 for (int i = 0; i < length; i++) {
542 if (array[i]->origin /* naked field! */) {
543 array[i]->print_as_flag(out);
544 out->print(" ");
545 }
546 }
547 out->cr();
548 FREE_C_HEAP_ARRAY(Flag*, array, mtInternal);
549 }
551 #ifndef PRODUCT
554 void CommandLineFlags::verify() {
555 assert(Arguments::check_vm_args_consistency(), "Some flag settings conflict");
556 }
558 #endif // PRODUCT
560 void CommandLineFlags::printFlags(outputStream* out, bool withComments) {
561 // Print the flags sorted by name
562 // note: this method is called before the thread structure is in place
563 // which means resource allocation cannot be used.
565 // Compute size
566 int length= 0;
567 while (flagTable[length].name != NULL) length++;
569 // Sort
570 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length, mtInternal);
571 for (int index = 0; index < length; index++) {
572 array[index] = &flagTable[index];
573 }
574 qsort(array, length, sizeof(Flag*), compare_flags);
576 // Print
577 out->print_cr("[Global flags]");
578 for (int i = 0; i < length; i++) {
579 if (array[i]->is_unlocked()) {
580 array[i]->print_on(out, withComments);
581 }
582 }
583 FREE_C_HEAP_ARRAY(Flag*, array, mtInternal);
584 }
