Mercurial > jdk8-mips64-public > hotspot / file revision
src/share/vm/runtime/globals.cpp@db9981fd3124
src/share/vm/runtime/globals.cpp
Wed, 23 Jan 2013 13:02:39 -0500
- author
- jprovino
- date
- Wed, 23 Jan 2013 13:02:39 -0500
- changeset 4542
- db9981fd3124
- parent 4020
- a5dd6e3ef9f3
- child 4586
- 64d2a0a39954
- permissions
- -rw-r--r--
8005915: Unify SERIALGC and INCLUDE_ALTERNATE_GCS
Summary: Rename INCLUDE_ALTERNATE_GCS to INCLUDE_ALL_GCS and replace SERIALGC with INCLUDE_ALL_GCS.
Reviewed-by: coleenp, stefank
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/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 if (strcmp(name, "EnableInvokeDynamic") == 0 && UnlockExperimentalVMOptions && !UnlockDiagnosticVMOptions) {
74 // transitional logic to allow tests to run until they are changed
75 static int warned;
76 if (++warned == 1) warning("Use -XX:+UnlockDiagnosticVMOptions before EnableInvokeDynamic flag");
77 return true;
78 }
79 return UnlockDiagnosticVMOptions;
80 } else if (strcmp(kind, "{experimental}") == 0 ||
81 strcmp(kind, "{C2 experimental}") == 0) {
82 return UnlockExperimentalVMOptions;
83 } else {
84 return is_unlocked_ext();
85 }
86 }
88 // Get custom message for this locked flag, or return NULL if
89 // none is available.
90 void Flag::get_locked_message(char* buf, int buflen) const {
91 get_locked_message_ext(buf, buflen);
92 }
94 bool Flag::is_writeable() const {
95 return strcmp(kind, "{manageable}") == 0 ||
96 strcmp(kind, "{product rw}") == 0 ||
97 is_writeable_ext();
98 }
100 // All flags except "manageable" are assumed to be internal flags.
101 // Long term, we need to define a mechanism to specify which flags
102 // are external/stable and change this function accordingly.
103 bool Flag::is_external() const {
104 return strcmp(kind, "{manageable}") == 0 || is_external_ext();
105 }
108 // Length of format string (e.g. "%.1234s") for printing ccstr below
109 #define FORMAT_BUFFER_LEN 16
111 void Flag::print_on(outputStream* st, bool withComments) {
112 st->print("%9s %-40s %c= ", type, name, (origin != DEFAULT ? ':' : ' '));
113 if (is_bool()) st->print("%-16s", get_bool() ? "true" : "false");
114 if (is_intx()) st->print("%-16ld", get_intx());
115 if (is_uintx()) st->print("%-16lu", get_uintx());
116 if (is_uint64_t()) st->print("%-16lu", get_uint64_t());
117 if (is_double()) st->print("%-16f", get_double());
119 if (is_ccstr()) {
120 const char* cp = get_ccstr();
121 if (cp != NULL) {
122 const char* eol;
123 while ((eol = strchr(cp, '\n')) != NULL) {
124 char format_buffer[FORMAT_BUFFER_LEN];
125 size_t llen = pointer_delta(eol, cp, sizeof(char));
126 jio_snprintf(format_buffer, FORMAT_BUFFER_LEN,
127 "%%." SIZE_FORMAT "s", llen);
128 st->print(format_buffer, cp);
129 st->cr();
130 cp = eol+1;
131 st->print("%5s %-35s += ", "", name);
132 }
133 st->print("%-16s", cp);
134 }
135 else st->print("%-16s", "");
136 }
137 st->print("%-20s", kind);
138 if (withComments) {
139 #ifndef PRODUCT
140 st->print("%s", doc );
141 #endif
142 }
143 st->cr();
144 }
146 void Flag::print_as_flag(outputStream* st) {
147 if (is_bool()) {
148 st->print("-XX:%s%s", get_bool() ? "+" : "-", name);
149 } else if (is_intx()) {
150 st->print("-XX:%s=" INTX_FORMAT, name, get_intx());
151 } else if (is_uintx()) {
152 st->print("-XX:%s=" UINTX_FORMAT, name, get_uintx());
153 } else if (is_uint64_t()) {
154 st->print("-XX:%s=" UINT64_FORMAT, name, get_uint64_t());
155 } else if (is_double()) {
156 st->print("-XX:%s=%f", name, get_double());
157 } else if (is_ccstr()) {
158 st->print("-XX:%s=", name);
159 const char* cp = get_ccstr();
160 if (cp != NULL) {
161 // Need to turn embedded '\n's back into separate arguments
162 // Not so efficient to print one character at a time,
163 // but the choice is to do the transformation to a buffer
164 // and print that. And this need not be efficient.
165 for (; *cp != '\0'; cp += 1) {
166 switch (*cp) {
167 default:
168 st->print("%c", *cp);
169 break;
170 case '\n':
171 st->print(" -XX:%s=", name);
172 break;
173 }
174 }
175 }
176 } else {
177 ShouldNotReachHere();
178 }
179 }
181 // 4991491 do not "optimize out" the was_set false values: omitting them
182 // tickles a Microsoft compiler bug causing flagTable to be malformed
184 #define RUNTIME_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{product}", DEFAULT },
185 #define RUNTIME_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{pd product}", DEFAULT },
186 #define RUNTIME_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{diagnostic}", DEFAULT },
187 #define RUNTIME_EXPERIMENTAL_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{experimental}", DEFAULT },
188 #define RUNTIME_MANAGEABLE_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{manageable}", DEFAULT },
189 #define RUNTIME_PRODUCT_RW_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{product rw}", DEFAULT },
191 #ifdef PRODUCT
192 #define RUNTIME_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
193 #define RUNTIME_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */
194 #define RUNTIME_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc)
195 #else
196 #define RUNTIME_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "", DEFAULT },
197 #define RUNTIME_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, doc, "{pd}", DEFAULT },
198 #define RUNTIME_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{notproduct}", DEFAULT },
199 #endif
201 #ifdef _LP64
202 #define RUNTIME_LP64_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{lp64_product}", DEFAULT },
203 #else
204 #define RUNTIME_LP64_PRODUCT_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
205 #endif // _LP64
207 #define C1_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C1 product}", DEFAULT },
208 #define C1_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C1 pd product}", DEFAULT },
209 #ifdef PRODUCT
210 #define C1_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
211 #define C1_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */
212 #define C1_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc)
213 #else
214 #define C1_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{C1}", DEFAULT },
215 #define C1_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, doc, "{C1 pd}", DEFAULT },
216 #define C1_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{C1 notproduct}", DEFAULT },
217 #endif
219 #define C2_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C2 product}", DEFAULT },
220 #define C2_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C2 pd product}", DEFAULT },
221 #define C2_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C2 diagnostic}", DEFAULT },
222 #define C2_EXPERIMENTAL_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{C2 experimental}", DEFAULT },
223 #ifdef PRODUCT
224 #define C2_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
225 #define C2_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */
226 #define C2_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc)
227 #else
228 #define C2_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{C2}", DEFAULT },
229 #define C2_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, doc, "{C2 pd}", DEFAULT },
230 #define C2_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{C2 notproduct}", DEFAULT },
231 #endif
233 #define ARCH_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{ARCH product}", DEFAULT },
234 #define ARCH_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{ARCH diagnostic}", DEFAULT },
235 #define ARCH_EXPERIMENTAL_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{ARCH experimental}", DEFAULT },
236 #ifdef PRODUCT
237 #define ARCH_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
238 #define ARCH_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc)
239 #else
240 #define ARCH_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{ARCH}", DEFAULT },
241 #define ARCH_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{ARCH notproduct}", DEFAULT },
242 #endif
244 #define SHARK_PRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{Shark product}", DEFAULT },
245 #define SHARK_PD_PRODUCT_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{Shark pd product}", DEFAULT },
246 #define SHARK_DIAGNOSTIC_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, NOT_PRODUCT_ARG(doc) "{Shark diagnostic}", DEFAULT },
247 #ifdef PRODUCT
248 #define SHARK_DEVELOP_FLAG_STRUCT(type, name, value, doc) /* flag is constant */
249 #define SHARK_PD_DEVELOP_FLAG_STRUCT(type, name, doc) /* flag is constant */
250 #define SHARK_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc)
251 #else
252 #define SHARK_DEVELOP_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{Shark}", DEFAULT },
253 #define SHARK_PD_DEVELOP_FLAG_STRUCT(type, name, doc) { #type, XSTR(name), &name, doc, "{Shark pd}", DEFAULT },
254 #define SHARK_NOTPRODUCT_FLAG_STRUCT(type, name, value, doc) { #type, XSTR(name), &name, doc, "{Shark notproduct}", DEFAULT },
255 #endif
257 static Flag flagTable[] = {
258 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)
259 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)
260 #if INCLUDE_ALL_GCS
261 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)
262 #endif // INCLUDE_ALL_GCS
263 #ifdef COMPILER1
264 C1_FLAGS(C1_DEVELOP_FLAG_STRUCT, C1_PD_DEVELOP_FLAG_STRUCT, C1_PRODUCT_FLAG_STRUCT, C1_PD_PRODUCT_FLAG_STRUCT, C1_NOTPRODUCT_FLAG_STRUCT)
265 #endif
266 #ifdef COMPILER2
267 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)
268 #endif
269 #ifdef SHARK
270 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)
271 #endif
272 ARCH_FLAGS(ARCH_DEVELOP_FLAG_STRUCT, ARCH_PRODUCT_FLAG_STRUCT, ARCH_DIAGNOSTIC_FLAG_STRUCT, ARCH_EXPERIMENTAL_FLAG_STRUCT, ARCH_NOTPRODUCT_FLAG_STRUCT)
273 FLAGTABLE_EXT
274 {0, NULL, NULL}
275 };
277 Flag* Flag::flags = flagTable;
278 size_t Flag::numFlags = (sizeof(flagTable) / sizeof(Flag));
280 inline bool str_equal(const char* s, char* q, size_t len) {
281 // s is null terminated, q is not!
282 if (strlen(s) != (unsigned int) len) return false;
283 return strncmp(s, q, len) == 0;
284 }
286 // Search the flag table for a named flag
287 Flag* Flag::find_flag(char* name, size_t length, bool allow_locked) {
288 for (Flag* current = &flagTable[0]; current->name != NULL; current++) {
289 if (str_equal(current->name, name, length)) {
290 // Found a matching entry. Report locked flags only if allowed.
291 if (!(current->is_unlocked() || current->is_unlocker())) {
292 if (!allow_locked) {
293 // disable use of locked flags, e.g. diagnostic, experimental,
294 // commercial... until they are explicitly unlocked
295 return NULL;
296 }
297 }
298 return current;
299 }
300 }
301 // Flag name is not in the flag table
302 return NULL;
303 }
305 // Returns the address of the index'th element
306 static Flag* address_of_flag(CommandLineFlagWithType flag) {
307 assert((size_t)flag < Flag::numFlags, "bad command line flag index");
308 return &Flag::flags[flag];
309 }
311 bool CommandLineFlagsEx::is_default(CommandLineFlag flag) {
312 assert((size_t)flag < Flag::numFlags, "bad command line flag index");
313 Flag* f = &Flag::flags[flag];
314 return (f->origin == DEFAULT);
315 }
317 bool CommandLineFlagsEx::is_ergo(CommandLineFlag flag) {
318 assert((size_t)flag < Flag::numFlags, "bad command line flag index");
319 Flag* f = &Flag::flags[flag];
320 return (f->origin == ERGONOMIC);
321 }
323 bool CommandLineFlagsEx::is_cmdline(CommandLineFlag flag) {
324 assert((size_t)flag < Flag::numFlags, "bad command line flag index");
325 Flag* f = &Flag::flags[flag];
326 return (f->origin == COMMAND_LINE);
327 }
329 bool CommandLineFlags::wasSetOnCmdline(const char* name, bool* value) {
330 Flag* result = Flag::find_flag((char*)name, strlen(name));
331 if (result == NULL) return false;
332 *value = (result->origin == COMMAND_LINE);
333 return true;
334 }
336 bool CommandLineFlags::boolAt(char* name, size_t len, bool* value) {
337 Flag* result = Flag::find_flag(name, len);
338 if (result == NULL) return false;
339 if (!result->is_bool()) return false;
340 *value = result->get_bool();
341 return true;
342 }
344 bool CommandLineFlags::boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin) {
345 Flag* result = Flag::find_flag(name, len);
346 if (result == NULL) return false;
347 if (!result->is_bool()) return false;
348 bool old_value = result->get_bool();
349 result->set_bool(*value);
350 *value = old_value;
351 result->origin = origin;
352 return true;
353 }
355 void CommandLineFlagsEx::boolAtPut(CommandLineFlagWithType flag, bool value, FlagValueOrigin origin) {
356 Flag* faddr = address_of_flag(flag);
357 guarantee(faddr != NULL && faddr->is_bool(), "wrong flag type");
358 faddr->set_bool(value);
359 faddr->origin = origin;
360 }
362 bool CommandLineFlags::intxAt(char* name, size_t len, intx* value) {
363 Flag* result = Flag::find_flag(name, len);
364 if (result == NULL) return false;
365 if (!result->is_intx()) return false;
366 *value = result->get_intx();
367 return true;
368 }
370 bool CommandLineFlags::intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin) {
371 Flag* result = Flag::find_flag(name, len);
372 if (result == NULL) return false;
373 if (!result->is_intx()) return false;
374 intx old_value = result->get_intx();
375 result->set_intx(*value);
376 *value = old_value;
377 result->origin = origin;
378 return true;
379 }
381 void CommandLineFlagsEx::intxAtPut(CommandLineFlagWithType flag, intx value, FlagValueOrigin origin) {
382 Flag* faddr = address_of_flag(flag);
383 guarantee(faddr != NULL && faddr->is_intx(), "wrong flag type");
384 faddr->set_intx(value);
385 faddr->origin = origin;
386 }
388 bool CommandLineFlags::uintxAt(char* name, size_t len, uintx* value) {
389 Flag* result = Flag::find_flag(name, len);
390 if (result == NULL) return false;
391 if (!result->is_uintx()) return false;
392 *value = result->get_uintx();
393 return true;
394 }
396 bool CommandLineFlags::uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin) {
397 Flag* result = Flag::find_flag(name, len);
398 if (result == NULL) return false;
399 if (!result->is_uintx()) return false;
400 uintx old_value = result->get_uintx();
401 result->set_uintx(*value);
402 *value = old_value;
403 result->origin = origin;
404 return true;
405 }
407 void CommandLineFlagsEx::uintxAtPut(CommandLineFlagWithType flag, uintx value, FlagValueOrigin origin) {
408 Flag* faddr = address_of_flag(flag);
409 guarantee(faddr != NULL && faddr->is_uintx(), "wrong flag type");
410 faddr->set_uintx(value);
411 faddr->origin = origin;
412 }
414 bool CommandLineFlags::uint64_tAt(char* name, size_t len, uint64_t* value) {
415 Flag* result = Flag::find_flag(name, len);
416 if (result == NULL) return false;
417 if (!result->is_uint64_t()) return false;
418 *value = result->get_uint64_t();
419 return true;
420 }
422 bool CommandLineFlags::uint64_tAtPut(char* name, size_t len, uint64_t* value, FlagValueOrigin origin) {
423 Flag* result = Flag::find_flag(name, len);
424 if (result == NULL) return false;
425 if (!result->is_uint64_t()) return false;
426 uint64_t old_value = result->get_uint64_t();
427 result->set_uint64_t(*value);
428 *value = old_value;
429 result->origin = origin;
430 return true;
431 }
433 void CommandLineFlagsEx::uint64_tAtPut(CommandLineFlagWithType flag, uint64_t value, FlagValueOrigin origin) {
434 Flag* faddr = address_of_flag(flag);
435 guarantee(faddr != NULL && faddr->is_uint64_t(), "wrong flag type");
436 faddr->set_uint64_t(value);
437 faddr->origin = origin;
438 }
440 bool CommandLineFlags::doubleAt(char* name, size_t len, double* value) {
441 Flag* result = Flag::find_flag(name, len);
442 if (result == NULL) return false;
443 if (!result->is_double()) return false;
444 *value = result->get_double();
445 return true;
446 }
448 bool CommandLineFlags::doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin) {
449 Flag* result = Flag::find_flag(name, len);
450 if (result == NULL) return false;
451 if (!result->is_double()) return false;
452 double old_value = result->get_double();
453 result->set_double(*value);
454 *value = old_value;
455 result->origin = origin;
456 return true;
457 }
459 void CommandLineFlagsEx::doubleAtPut(CommandLineFlagWithType flag, double value, FlagValueOrigin origin) {
460 Flag* faddr = address_of_flag(flag);
461 guarantee(faddr != NULL && faddr->is_double(), "wrong flag type");
462 faddr->set_double(value);
463 faddr->origin = origin;
464 }
466 bool CommandLineFlags::ccstrAt(char* name, size_t len, ccstr* value) {
467 Flag* result = Flag::find_flag(name, len);
468 if (result == NULL) return false;
469 if (!result->is_ccstr()) return false;
470 *value = result->get_ccstr();
471 return true;
472 }
474 // Contract: Flag will make private copy of the incoming value.
475 // Outgoing value is always malloc-ed, and caller MUST call free.
476 bool CommandLineFlags::ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin) {
477 Flag* result = Flag::find_flag(name, len);
478 if (result == NULL) return false;
479 if (!result->is_ccstr()) return false;
480 ccstr old_value = result->get_ccstr();
481 char* new_value = NULL;
482 if (*value != NULL) {
483 new_value = NEW_C_HEAP_ARRAY(char, strlen(*value)+1, mtInternal);
484 strcpy(new_value, *value);
485 }
486 result->set_ccstr(new_value);
487 if (result->origin == DEFAULT && old_value != NULL) {
488 // Prior value is NOT heap allocated, but was a literal constant.
489 char* old_value_to_free = NEW_C_HEAP_ARRAY(char, strlen(old_value)+1, mtInternal);
490 strcpy(old_value_to_free, old_value);
491 old_value = old_value_to_free;
492 }
493 *value = old_value;
494 result->origin = origin;
495 return true;
496 }
498 // Contract: Flag will make private copy of the incoming value.
499 void CommandLineFlagsEx::ccstrAtPut(CommandLineFlagWithType flag, ccstr value, FlagValueOrigin origin) {
500 Flag* faddr = address_of_flag(flag);
501 guarantee(faddr != NULL && faddr->is_ccstr(), "wrong flag type");
502 ccstr old_value = faddr->get_ccstr();
503 char* new_value = NEW_C_HEAP_ARRAY(char, strlen(value)+1, mtInternal);
504 strcpy(new_value, value);
505 faddr->set_ccstr(new_value);
506 if (faddr->origin != DEFAULT && old_value != NULL) {
507 // Prior value is heap allocated so free it.
508 FREE_C_HEAP_ARRAY(char, old_value, mtInternal);
509 }
510 faddr->origin = origin;
511 }
513 extern "C" {
514 static int compare_flags(const void* void_a, const void* void_b) {
515 return strcmp((*((Flag**) void_a))->name, (*((Flag**) void_b))->name);
516 }
517 }
519 void CommandLineFlags::printSetFlags(outputStream* out) {
520 // Print which flags were set on the command line
521 // note: this method is called before the thread structure is in place
522 // which means resource allocation cannot be used.
524 // Compute size
525 int length= 0;
526 while (flagTable[length].name != NULL) length++;
528 // Sort
529 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length, mtInternal);
530 for (int index = 0; index < length; index++) {
531 array[index] = &flagTable[index];
532 }
533 qsort(array, length, sizeof(Flag*), compare_flags);
535 // Print
536 for (int i = 0; i < length; i++) {
537 if (array[i]->origin /* naked field! */) {
538 array[i]->print_as_flag(out);
539 out->print(" ");
540 }
541 }
542 out->cr();
543 FREE_C_HEAP_ARRAY(Flag*, array, mtInternal);
544 }
546 #ifndef PRODUCT
549 void CommandLineFlags::verify() {
550 assert(Arguments::check_vm_args_consistency(), "Some flag settings conflict");
551 }
553 #endif // PRODUCT
555 void CommandLineFlags::printFlags(outputStream* out, bool withComments) {
556 // Print the flags sorted by name
557 // note: this method is called before the thread structure is in place
558 // which means resource allocation cannot be used.
560 // Compute size
561 int length= 0;
562 while (flagTable[length].name != NULL) length++;
564 // Sort
565 Flag** array = NEW_C_HEAP_ARRAY(Flag*, length, mtInternal);
566 for (int index = 0; index < length; index++) {
567 array[index] = &flagTable[index];
568 }
569 qsort(array, length, sizeof(Flag*), compare_flags);
571 // Print
572 out->print_cr("[Global flags]");
573 for (int i = 0; i < length; i++) {
574 if (array[i]->is_unlocked()) {
575 array[i]->print_on(out, withComments);
576 }
577 }
578 FREE_C_HEAP_ARRAY(Flag*, array, mtInternal);
579 }
