Mercurial > jdk8-mips64-public > hotspot / file revision
src/share/vm/runtime/globals.cpp@a5dd6e3ef9f3
src/share/vm/runtime/globals.cpp
Mon, 27 Aug 2012 15:17:17 -0700
- author
- twisti
- date
- Mon, 27 Aug 2012 15:17:17 -0700
- changeset 4020
- a5dd6e3ef9f3
- parent 3900
- d2a62e0f25eb
- child 4542
- db9981fd3124
- permissions
- -rw-r--r--
6677625: Move platform specific flags from globals.hpp to globals_<arch>.hpp
Reviewed-by: kvn, dholmes, coleenp
Contributed-by: Tao Mao <tao.mao@oracle.com>
1 /*
2 * Copyright (c) 1997, 2012, 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/top.hpp"
33 #ifndef SERIALGC
34 #include "gc_implementation/g1/g1_globals.hpp"
35 #endif
36 #ifdef COMPILER1
37 #include "c1/c1_globals.hpp"
38 #endif
39 #ifdef COMPILER2
40 #include "opto/c2_globals.hpp"
41 #endif
42 #ifdef SHARK
43 #include "shark/shark_globals.hpp"
44 #endif
46 RUNTIME_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PD_DEVELOPER_FLAG, \
47 MATERIALIZE_PRODUCT_FLAG, MATERIALIZE_PD_PRODUCT_FLAG, \
48 MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_EXPERIMENTAL_FLAG, \
49 MATERIALIZE_NOTPRODUCT_FLAG, \
50 MATERIALIZE_MANAGEABLE_FLAG, MATERIALIZE_PRODUCT_RW_FLAG, \
51 MATERIALIZE_LP64_PRODUCT_FLAG)
53 RUNTIME_OS_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PD_DEVELOPER_FLAG, \
54 MATERIALIZE_PRODUCT_FLAG, MATERIALIZE_PD_PRODUCT_FLAG, \
55 MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_NOTPRODUCT_FLAG)
57 ARCH_FLAGS(MATERIALIZE_DEVELOPER_FLAG, MATERIALIZE_PRODUCT_FLAG, \
58 MATERIALIZE_DIAGNOSTIC_FLAG, MATERIALIZE_EXPERIMENTAL_FLAG, \
59 MATERIALIZE_NOTPRODUCT_FLAG)
61 MATERIALIZE_FLAGS_EXT
64 bool Flag::is_unlocker() const {
65 return strcmp(name, "UnlockDiagnosticVMOptions") == 0 ||
66 strcmp(name, "UnlockExperimentalVMOptions") == 0 ||
67 is_unlocker_ext();
68 }
70 bool Flag::is_unlocked() const {
71 if (strcmp(kind, "{diagnostic}") == 0) {
72 if (strcmp(name, "EnableInvokeDynamic") == 0 && UnlockExperimentalVMOptions && !UnlockDiagnosticVMOptions) {
73 // transitional logic to allow tests to run until they are changed
74 static int warned;
75 if (++warned == 1) warning("Use -XX:+UnlockDiagnosticVMOptions before EnableInvokeDynamic flag");
76 return true;
77 }
78 return UnlockDiagnosticVMOptions;
79 } else if (strcmp(kind, "{experimental}") == 0 ||
80 strcmp(kind, "{C2 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 #ifndef SERIALGC
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 // SERIALGC
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, 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(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 // Returns the address of the index'th element
305 static Flag* address_of_flag(CommandLineFlagWithType flag) {
306 assert((size_t)flag < Flag::numFlags, "bad command line flag index");
307 return &Flag::flags[flag];
308 }
310 bool CommandLineFlagsEx::is_default(CommandLineFlag flag) {
311 assert((size_t)flag < Flag::numFlags, "bad command line flag index");
312 Flag* f = &Flag::flags[flag];
313 return (f->origin == DEFAULT);
314 }
316 bool CommandLineFlagsEx::is_ergo(CommandLineFlag flag) {
317 assert((size_t)flag < Flag::numFlags, "bad command line flag index");
318 Flag* f = &Flag::flags[flag];
319 return (f->origin == ERGONOMIC);
320 }
322 bool CommandLineFlagsEx::is_cmdline(CommandLineFlag flag) {
323 assert((size_t)flag < Flag::numFlags, "bad command line flag index");
324 Flag* f = &Flag::flags[flag];
325 return (f->origin == COMMAND_LINE);
326 }
328 bool CommandLineFlags::wasSetOnCmdline(const char* name, bool* value) {
329 Flag* result = Flag::find_flag((char*)name, strlen(name));
330 if (result == NULL) return false;
331 *value = (result->origin == COMMAND_LINE);
332 return true;
333 }
335 bool CommandLineFlags::boolAt(char* name, size_t len, bool* value) {
336 Flag* result = Flag::find_flag(name, len);
337 if (result == NULL) return false;
338 if (!result->is_bool()) return false;
339 *value = result->get_bool();
340 return true;
341 }
343 bool CommandLineFlags::boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin) {
344 Flag* result = Flag::find_flag(name, len);
345 if (result == NULL) return false;
346 if (!result->is_bool()) return false;
347 bool old_value = result->get_bool();
348 result->set_bool(*value);
349 *value = old_value;
350 result->origin = origin;
351 return true;
352 }
354 void CommandLineFlagsEx::boolAtPut(CommandLineFlagWithType flag, bool value, FlagValueOrigin origin) {
355 Flag* faddr = address_of_flag(flag);
356 guarantee(faddr != NULL && faddr->is_bool(), "wrong flag type");
357 faddr->set_bool(value);
358 faddr->origin = origin;
359 }
361 bool CommandLineFlags::intxAt(char* name, size_t len, intx* value) {
362 Flag* result = Flag::find_flag(name, len);
363 if (result == NULL) return false;
364 if (!result->is_intx()) return false;
365 *value = result->get_intx();
366 return true;
367 }
369 bool CommandLineFlags::intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin) {
370 Flag* result = Flag::find_flag(name, len);
371 if (result == NULL) return false;
372 if (!result->is_intx()) return false;
373 intx old_value = result->get_intx();
374 result->set_intx(*value);
375 *value = old_value;
376 result->origin = origin;
377 return true;
378 }
380 void CommandLineFlagsEx::intxAtPut(CommandLineFlagWithType flag, intx value, FlagValueOrigin origin) {
381 Flag* faddr = address_of_flag(flag);
382 guarantee(faddr != NULL && faddr->is_intx(), "wrong flag type");
383 faddr->set_intx(value);
384 faddr->origin = origin;
385 }
387 bool CommandLineFlags::uintxAt(char* name, size_t len, uintx* value) {
388 Flag* result = Flag::find_flag(name, len);
389 if (result == NULL) return false;
390 if (!result->is_uintx()) return false;
391 *value = result->get_uintx();
392 return true;
393 }
395 bool CommandLineFlags::uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin) {
396 Flag* result = Flag::find_flag(name, len);
397 if (result == NULL) return false;
398 if (!result->is_uintx()) return false;
399 uintx old_value = result->get_uintx();
400 result->set_uintx(*value);
401 *value = old_value;
402 result->origin = origin;
403 return true;
404 }
406 void CommandLineFlagsEx::uintxAtPut(CommandLineFlagWithType flag, uintx value, FlagValueOrigin origin) {
407 Flag* faddr = address_of_flag(flag);
408 guarantee(faddr != NULL && faddr->is_uintx(), "wrong flag type");
409 faddr->set_uintx(value);
410 faddr->origin = origin;
411 }
413 bool CommandLineFlags::uint64_tAt(char* name, size_t len, uint64_t* value) {
414 Flag* result = Flag::find_flag(name, len);
415 if (result == NULL) return false;
416 if (!result->is_uint64_t()) return false;
417 *value = result->get_uint64_t();
418 return true;
419 }
421 bool CommandLineFlags::uint64_tAtPut(char* name, size_t len, uint64_t* value, FlagValueOrigin origin) {
422 Flag* result = Flag::find_flag(name, len);
423 if (result == NULL) return false;
424 if (!result->is_uint64_t()) return false;
425 uint64_t old_value = result->get_uint64_t();
426 result->set_uint64_t(*value);
427 *value = old_value;
428 result->origin = origin;
429 return true;
430 }
432 void CommandLineFlagsEx::uint64_tAtPut(CommandLineFlagWithType flag, uint64_t value, FlagValueOrigin origin) {
433 Flag* faddr = address_of_flag(flag);
434 guarantee(faddr != NULL && faddr->is_uint64_t(), "wrong flag type");
435 faddr->set_uint64_t(value);
436 faddr->origin = origin;
437 }
439 bool CommandLineFlags::doubleAt(char* name, size_t len, double* value) {
440 Flag* result = Flag::find_flag(name, len);
441 if (result == NULL) return false;
442 if (!result->is_double()) return false;
443 *value = result->get_double();
444 return true;
445 }
447 bool CommandLineFlags::doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin) {
448 Flag* result = Flag::find_flag(name, len);
449 if (result == NULL) return false;
450 if (!result->is_double()) return false;
451 double old_value = result->get_double();
452 result->set_double(*value);
453 *value = old_value;
454 result->origin = origin;
455 return true;
456 }
458 void CommandLineFlagsEx::doubleAtPut(CommandLineFlagWithType flag, double value, FlagValueOrigin origin) {
459 Flag* faddr = address_of_flag(flag);
460 guarantee(faddr != NULL && faddr->is_double(), "wrong flag type");
461 faddr->set_double(value);
462 faddr->origin = origin;
463 }
465 bool CommandLineFlags::ccstrAt(char* name, size_t len, ccstr* value) {
466 Flag* result = Flag::find_flag(name, len);
467 if (result == NULL) return false;
468 if (!result->is_ccstr()) return false;
469 *value = result->get_ccstr();
470 return true;
471 }
473 // Contract: Flag will make private copy of the incoming value.
474 // Outgoing value is always malloc-ed, and caller MUST call free.
475 bool CommandLineFlags::ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin) {
476 Flag* result = Flag::find_flag(name, len);
477 if (result == NULL) return false;
478 if (!result->is_ccstr()) return false;
479 ccstr old_value = result->get_ccstr();
480 char* new_value = NULL;
481 if (*value != NULL) {
482 new_value = NEW_C_HEAP_ARRAY(char, strlen(*value)+1, mtInternal);
483 strcpy(new_value, *value);
484 }
485 result->set_ccstr(new_value);
486 if (result->origin == DEFAULT && old_value != NULL) {
487 // Prior value is NOT heap allocated, but was a literal constant.
488 char* old_value_to_free = NEW_C_HEAP_ARRAY(char, strlen(old_value)+1, mtInternal);
489 strcpy(old_value_to_free, old_value);
490 old_value = old_value_to_free;
491 }
492 *value = old_value;
493 result->origin = origin;
494 return true;
495 }
497 // Contract: Flag will make private copy of the incoming value.
498 void CommandLineFlagsEx::ccstrAtPut(CommandLineFlagWithType flag, ccstr value, FlagValueOrigin origin) {
499 Flag* faddr = address_of_flag(flag);
500 guarantee(faddr != NULL && faddr->is_ccstr(), "wrong flag type");
501 ccstr old_value = faddr->get_ccstr();
502 char* new_value = NEW_C_HEAP_ARRAY(char, strlen(value)+1, mtInternal);
503 strcpy(new_value, value);
504 faddr->set_ccstr(new_value);
505 if (faddr->origin != DEFAULT && old_value != NULL) {
506 // Prior value is heap allocated so free it.
507 FREE_C_HEAP_ARRAY(char, old_value, mtInternal);
508 }
509 faddr->origin = origin;
510 }
512 extern "C" {
513 static int compare_flags(const void* void_a, const void* void_b) {
514 return strcmp((*((Flag**) void_a))->name, (*((Flag**) void_b))->name);
515 }
516 }
518 void CommandLineFlags::printSetFlags(outputStream* out) {
519 // Print which flags were set on the command line
520 // note: this method is called before the thread structure is in place
521 // which means resource allocation cannot be used.
523 // Compute size
524 int length= 0;
525 while (flagTable[length].name != NULL) length++;
527 // Sort
528 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length, mtInternal);
529 for (int index = 0; index < length; index++) {
530 array[index] = &flagTable[index];
531 }
532 qsort(array, length, sizeof(Flag*), compare_flags);
534 // Print
535 for (int i = 0; i < length; i++) {
536 if (array[i]->origin /* naked field! */) {
537 array[i]->print_as_flag(out);
538 out->print(" ");
539 }
540 }
541 out->cr();
542 FREE_C_HEAP_ARRAY(Flag*, array, mtInternal);
543 }
545 #ifndef PRODUCT
548 void CommandLineFlags::verify() {
549 assert(Arguments::check_vm_args_consistency(), "Some flag settings conflict");
550 }
552 #endif // PRODUCT
554 void CommandLineFlags::printFlags(outputStream* out, bool withComments) {
555 // Print the flags sorted by name
556 // note: this method is called before the thread structure is in place
557 // which means resource allocation cannot be used.
559 // Compute size
560 int length= 0;
561 while (flagTable[length].name != NULL) length++;
563 // Sort
564 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length, mtInternal);
565 for (int index = 0; index < length; index++) {
566 array[index] = &flagTable[index];
567 }
568 qsort(array, length, sizeof(Flag*), compare_flags);
570 // Print
571 out->print_cr("[Global flags]");
572 for (int i = 0; i < length; i++) {
573 if (array[i]->is_unlocked()) {
574 array[i]->print_on(out, withComments);
575 }
576 }
577 FREE_C_HEAP_ARRAY(Flag*, array, mtInternal);
578 }
