Print this page
rev 6910 : 8064667: Add -XX:+CheckEndorsedAndExtDirs flag to JDK 8
Reviewed-by: coleenp, ccheung
| Split |
Split |
Close |
| Expand all |
| Collapse all |
--- old/hotspot/src/share/vm/runtime/globals.hpp
+++ new/hotspot/src/share/vm/runtime/globals.hpp
1 1 /*
2 2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
3 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 4 *
5 5 * This code is free software; you can redistribute it and/or modify it
6 6 * under the terms of the GNU General Public License version 2 only, as
7 7 * published by the Free Software Foundation.
8 8 *
9 9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 12 * version 2 for more details (a copy is included in the LICENSE file that
13 13 * accompanied this code).
14 14 *
15 15 * You should have received a copy of the GNU General Public License version
16 16 * 2 along with this work; if not, write to the Free Software Foundation,
17 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 18 *
19 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 20 * or visit www.oracle.com if you need additional information or have any
21 21 * questions.
22 22 *
23 23 */
24 24
25 25 #ifndef SHARE_VM_RUNTIME_GLOBALS_HPP
26 26 #define SHARE_VM_RUNTIME_GLOBALS_HPP
27 27
28 28 #include "utilities/debug.hpp"
29 29
30 30 // use this for flags that are true per default in the tiered build
31 31 // but false in non-tiered builds, and vice versa
32 32 #ifdef TIERED
33 33 #define trueInTiered true
34 34 #define falseInTiered false
35 35 #else
36 36 #define trueInTiered false
37 37 #define falseInTiered true
38 38 #endif
39 39
40 40 #ifdef TARGET_ARCH_x86
41 41 # include "globals_x86.hpp"
42 42 #endif
43 43 #ifdef TARGET_ARCH_sparc
44 44 # include "globals_sparc.hpp"
45 45 #endif
46 46 #ifdef TARGET_ARCH_zero
47 47 # include "globals_zero.hpp"
48 48 #endif
49 49 #ifdef TARGET_ARCH_arm
50 50 # include "globals_arm.hpp"
51 51 #endif
52 52 #ifdef TARGET_ARCH_ppc
53 53 # include "globals_ppc.hpp"
54 54 #endif
55 55 #ifdef TARGET_OS_FAMILY_linux
56 56 # include "globals_linux.hpp"
57 57 #endif
58 58 #ifdef TARGET_OS_FAMILY_solaris
59 59 # include "globals_solaris.hpp"
60 60 #endif
61 61 #ifdef TARGET_OS_FAMILY_windows
62 62 # include "globals_windows.hpp"
63 63 #endif
64 64 #ifdef TARGET_OS_FAMILY_aix
65 65 # include "globals_aix.hpp"
66 66 #endif
67 67 #ifdef TARGET_OS_FAMILY_bsd
68 68 # include "globals_bsd.hpp"
69 69 #endif
70 70 #ifdef TARGET_OS_ARCH_linux_x86
71 71 # include "globals_linux_x86.hpp"
72 72 #endif
73 73 #ifdef TARGET_OS_ARCH_linux_sparc
74 74 # include "globals_linux_sparc.hpp"
75 75 #endif
76 76 #ifdef TARGET_OS_ARCH_linux_zero
77 77 # include "globals_linux_zero.hpp"
78 78 #endif
79 79 #ifdef TARGET_OS_ARCH_solaris_x86
80 80 # include "globals_solaris_x86.hpp"
81 81 #endif
82 82 #ifdef TARGET_OS_ARCH_solaris_sparc
83 83 # include "globals_solaris_sparc.hpp"
84 84 #endif
85 85 #ifdef TARGET_OS_ARCH_windows_x86
86 86 # include "globals_windows_x86.hpp"
87 87 #endif
88 88 #ifdef TARGET_OS_ARCH_linux_arm
89 89 # include "globals_linux_arm.hpp"
90 90 #endif
91 91 #ifdef TARGET_OS_ARCH_linux_ppc
92 92 # include "globals_linux_ppc.hpp"
93 93 #endif
94 94 #ifdef TARGET_OS_ARCH_aix_ppc
95 95 # include "globals_aix_ppc.hpp"
96 96 #endif
97 97 #ifdef TARGET_OS_ARCH_bsd_x86
98 98 # include "globals_bsd_x86.hpp"
99 99 #endif
100 100 #ifdef TARGET_OS_ARCH_bsd_zero
101 101 # include "globals_bsd_zero.hpp"
102 102 #endif
103 103 #ifdef COMPILER1
104 104 #ifdef TARGET_ARCH_x86
105 105 # include "c1_globals_x86.hpp"
106 106 #endif
107 107 #ifdef TARGET_ARCH_sparc
108 108 # include "c1_globals_sparc.hpp"
109 109 #endif
110 110 #ifdef TARGET_ARCH_arm
111 111 # include "c1_globals_arm.hpp"
112 112 #endif
113 113 #ifdef TARGET_ARCH_ppc
114 114 # include "c1_globals_ppc.hpp"
115 115 #endif
116 116 #ifdef TARGET_OS_FAMILY_linux
117 117 # include "c1_globals_linux.hpp"
118 118 #endif
119 119 #ifdef TARGET_OS_FAMILY_solaris
120 120 # include "c1_globals_solaris.hpp"
121 121 #endif
122 122 #ifdef TARGET_OS_FAMILY_windows
123 123 # include "c1_globals_windows.hpp"
124 124 #endif
125 125 #ifdef TARGET_OS_FAMILY_aix
126 126 # include "c1_globals_aix.hpp"
127 127 #endif
128 128 #ifdef TARGET_OS_FAMILY_bsd
129 129 # include "c1_globals_bsd.hpp"
130 130 #endif
131 131 #endif
132 132 #ifdef COMPILER2
133 133 #ifdef TARGET_ARCH_x86
134 134 # include "c2_globals_x86.hpp"
135 135 #endif
136 136 #ifdef TARGET_ARCH_sparc
137 137 # include "c2_globals_sparc.hpp"
138 138 #endif
139 139 #ifdef TARGET_ARCH_arm
140 140 # include "c2_globals_arm.hpp"
141 141 #endif
142 142 #ifdef TARGET_ARCH_ppc
143 143 # include "c2_globals_ppc.hpp"
144 144 #endif
145 145 #ifdef TARGET_OS_FAMILY_linux
146 146 # include "c2_globals_linux.hpp"
147 147 #endif
148 148 #ifdef TARGET_OS_FAMILY_solaris
149 149 # include "c2_globals_solaris.hpp"
150 150 #endif
151 151 #ifdef TARGET_OS_FAMILY_windows
152 152 # include "c2_globals_windows.hpp"
153 153 #endif
154 154 #ifdef TARGET_OS_FAMILY_aix
155 155 # include "c2_globals_aix.hpp"
156 156 #endif
157 157 #ifdef TARGET_OS_FAMILY_bsd
158 158 # include "c2_globals_bsd.hpp"
159 159 #endif
160 160 #endif
161 161 #ifdef SHARK
162 162 #ifdef TARGET_ARCH_zero
163 163 # include "shark_globals_zero.hpp"
164 164 #endif
165 165 #endif
166 166
167 167 #if !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK)
168 168 define_pd_global(bool, BackgroundCompilation, false);
169 169 define_pd_global(bool, UseTLAB, false);
170 170 define_pd_global(bool, CICompileOSR, false);
171 171 define_pd_global(bool, UseTypeProfile, false);
172 172 define_pd_global(bool, UseOnStackReplacement, false);
173 173 define_pd_global(bool, InlineIntrinsics, false);
174 174 define_pd_global(bool, PreferInterpreterNativeStubs, true);
175 175 define_pd_global(bool, ProfileInterpreter, false);
176 176 define_pd_global(bool, ProfileTraps, false);
177 177 define_pd_global(bool, TieredCompilation, false);
178 178
179 179 define_pd_global(intx, CompileThreshold, 0);
180 180 define_pd_global(intx, BackEdgeThreshold, 0);
181 181
182 182 define_pd_global(intx, OnStackReplacePercentage, 0);
183 183 define_pd_global(bool, ResizeTLAB, false);
184 184 define_pd_global(intx, FreqInlineSize, 0);
185 185 define_pd_global(intx, NewSizeThreadIncrease, 4*K);
186 186 define_pd_global(intx, InlineClassNatives, true);
187 187 define_pd_global(intx, InlineUnsafeOps, true);
188 188 define_pd_global(intx, InitialCodeCacheSize, 160*K);
189 189 define_pd_global(intx, ReservedCodeCacheSize, 32*M);
190 190 define_pd_global(intx, CodeCacheExpansionSize, 32*K);
191 191 define_pd_global(intx, CodeCacheMinBlockLength, 1);
192 192 define_pd_global(intx, CodeCacheMinimumUseSpace, 200*K);
193 193 define_pd_global(uintx,MetaspaceSize, ScaleForWordSize(4*M));
194 194 define_pd_global(bool, NeverActAsServerClassMachine, true);
195 195 define_pd_global(uint64_t,MaxRAM, 1ULL*G);
196 196 #define CI_COMPILER_COUNT 0
197 197 #else
198 198
199 199 #ifdef COMPILER2
200 200 #define CI_COMPILER_COUNT 2
201 201 #else
202 202 #define CI_COMPILER_COUNT 1
203 203 #endif // COMPILER2
204 204
205 205 #endif // no compilers
206 206
207 207 // string type aliases used only in this file
208 208 typedef const char* ccstr;
209 209 typedef const char* ccstrlist; // represents string arguments which accumulate
210 210
211 211 struct Flag {
212 212 enum Flags {
213 213 // value origin
214 214 DEFAULT = 0,
215 215 COMMAND_LINE = 1,
216 216 ENVIRON_VAR = 2,
217 217 CONFIG_FILE = 3,
218 218 MANAGEMENT = 4,
219 219 ERGONOMIC = 5,
220 220 ATTACH_ON_DEMAND = 6,
221 221 INTERNAL = 7,
222 222
223 223 LAST_VALUE_ORIGIN = INTERNAL,
224 224 VALUE_ORIGIN_BITS = 4,
225 225 VALUE_ORIGIN_MASK = right_n_bits(VALUE_ORIGIN_BITS),
226 226
227 227 // flag kind
228 228 KIND_PRODUCT = 1 << 4,
229 229 KIND_MANAGEABLE = 1 << 5,
230 230 KIND_DIAGNOSTIC = 1 << 6,
231 231 KIND_EXPERIMENTAL = 1 << 7,
232 232 KIND_NOT_PRODUCT = 1 << 8,
233 233 KIND_DEVELOP = 1 << 9,
234 234 KIND_PLATFORM_DEPENDENT = 1 << 10,
235 235 KIND_READ_WRITE = 1 << 11,
236 236 KIND_C1 = 1 << 12,
237 237 KIND_C2 = 1 << 13,
238 238 KIND_ARCH = 1 << 14,
239 239 KIND_SHARK = 1 << 15,
240 240 KIND_LP64_PRODUCT = 1 << 16,
241 241 KIND_COMMERCIAL = 1 << 17,
242 242
243 243 KIND_MASK = ~VALUE_ORIGIN_MASK
244 244 };
245 245
246 246 const char* _type;
247 247 const char* _name;
248 248 void* _addr;
249 249 NOT_PRODUCT(const char* _doc;)
250 250 Flags _flags;
251 251
252 252 // points to all Flags static array
253 253 static Flag* flags;
254 254
255 255 // number of flags
256 256 static size_t numFlags;
257 257
258 258 static Flag* find_flag(const char* name, size_t length, bool allow_locked = false, bool return_flag = false);
259 259 static Flag* fuzzy_match(const char* name, size_t length, bool allow_locked = false);
260 260
261 261 void check_writable();
262 262
263 263 bool is_bool() const;
264 264 bool get_bool() const;
265 265 void set_bool(bool value);
266 266
267 267 bool is_intx() const;
268 268 intx get_intx() const;
269 269 void set_intx(intx value);
270 270
271 271 bool is_uintx() const;
272 272 uintx get_uintx() const;
273 273 void set_uintx(uintx value);
274 274
275 275 bool is_uint64_t() const;
276 276 uint64_t get_uint64_t() const;
277 277 void set_uint64_t(uint64_t value);
278 278
279 279 bool is_double() const;
280 280 double get_double() const;
281 281 void set_double(double value);
282 282
283 283 bool is_ccstr() const;
284 284 bool ccstr_accumulates() const;
285 285 ccstr get_ccstr() const;
286 286 void set_ccstr(ccstr value);
287 287
288 288 Flags get_origin();
289 289 void set_origin(Flags origin);
290 290
291 291 bool is_default();
292 292 bool is_ergonomic();
293 293 bool is_command_line();
294 294
295 295 bool is_product() const;
296 296 bool is_manageable() const;
297 297 bool is_diagnostic() const;
298 298 bool is_experimental() const;
299 299 bool is_notproduct() const;
300 300 bool is_develop() const;
301 301 bool is_read_write() const;
302 302 bool is_commercial() const;
303 303
304 304 bool is_constant_in_binary() const;
305 305
306 306 bool is_unlocker() const;
307 307 bool is_unlocked() const;
308 308 bool is_writeable() const;
309 309 bool is_external() const;
310 310
311 311 bool is_unlocker_ext() const;
312 312 bool is_unlocked_ext() const;
313 313 bool is_writeable_ext() const;
314 314 bool is_external_ext() const;
315 315
316 316 void unlock_diagnostic();
317 317
318 318 void get_locked_message(char*, int) const;
319 319 void get_locked_message_ext(char*, int) const;
320 320
321 321 void print_on(outputStream* st, bool withComments = false );
322 322 void print_kind(outputStream* st);
323 323 void print_as_flag(outputStream* st);
324 324 };
325 325
326 326 // debug flags control various aspects of the VM and are global accessible
327 327
328 328 // use FlagSetting to temporarily change some debug flag
329 329 // e.g. FlagSetting fs(DebugThisAndThat, true);
330 330 // restored to previous value upon leaving scope
331 331 class FlagSetting {
332 332 bool val;
333 333 bool* flag;
334 334 public:
335 335 FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; }
336 336 ~FlagSetting() { *flag = val; }
337 337 };
338 338
339 339
340 340 class CounterSetting {
341 341 intx* counter;
342 342 public:
343 343 CounterSetting(intx* cnt) { counter = cnt; (*counter)++; }
344 344 ~CounterSetting() { (*counter)--; }
345 345 };
346 346
347 347
348 348 class UIntFlagSetting {
349 349 uintx val;
350 350 uintx* flag;
351 351 public:
352 352 UIntFlagSetting(uintx& fl, uintx newValue) { flag = &fl; val = fl; fl = newValue; }
353 353 ~UIntFlagSetting() { *flag = val; }
354 354 };
355 355
356 356
357 357 class DoubleFlagSetting {
358 358 double val;
359 359 double* flag;
360 360 public:
361 361 DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; }
362 362 ~DoubleFlagSetting() { *flag = val; }
363 363 };
364 364
365 365
366 366 class CommandLineFlags {
367 367 public:
368 368 static bool boolAt(const char* name, size_t len, bool* value);
369 369 static bool boolAt(const char* name, bool* value) { return boolAt(name, strlen(name), value); }
370 370 static bool boolAtPut(const char* name, size_t len, bool* value, Flag::Flags origin);
371 371 static bool boolAtPut(const char* name, bool* value, Flag::Flags origin) { return boolAtPut(name, strlen(name), value, origin); }
372 372
373 373 static bool intxAt(const char* name, size_t len, intx* value);
374 374 static bool intxAt(const char* name, intx* value) { return intxAt(name, strlen(name), value); }
375 375 static bool intxAtPut(const char* name, size_t len, intx* value, Flag::Flags origin);
376 376 static bool intxAtPut(const char* name, intx* value, Flag::Flags origin) { return intxAtPut(name, strlen(name), value, origin); }
377 377
378 378 static bool uintxAt(const char* name, size_t len, uintx* value);
379 379 static bool uintxAt(const char* name, uintx* value) { return uintxAt(name, strlen(name), value); }
380 380 static bool uintxAtPut(const char* name, size_t len, uintx* value, Flag::Flags origin);
381 381 static bool uintxAtPut(const char* name, uintx* value, Flag::Flags origin) { return uintxAtPut(name, strlen(name), value, origin); }
382 382
383 383 static bool uint64_tAt(const char* name, size_t len, uint64_t* value);
384 384 static bool uint64_tAt(const char* name, uint64_t* value) { return uint64_tAt(name, strlen(name), value); }
385 385 static bool uint64_tAtPut(const char* name, size_t len, uint64_t* value, Flag::Flags origin);
386 386 static bool uint64_tAtPut(const char* name, uint64_t* value, Flag::Flags origin) { return uint64_tAtPut(name, strlen(name), value, origin); }
387 387
388 388 static bool doubleAt(const char* name, size_t len, double* value);
389 389 static bool doubleAt(const char* name, double* value) { return doubleAt(name, strlen(name), value); }
390 390 static bool doubleAtPut(const char* name, size_t len, double* value, Flag::Flags origin);
391 391 static bool doubleAtPut(const char* name, double* value, Flag::Flags origin) { return doubleAtPut(name, strlen(name), value, origin); }
392 392
393 393 static bool ccstrAt(const char* name, size_t len, ccstr* value);
394 394 static bool ccstrAt(const char* name, ccstr* value) { return ccstrAt(name, strlen(name), value); }
395 395 // Contract: Flag will make private copy of the incoming value.
396 396 // Outgoing value is always malloc-ed, and caller MUST call free.
397 397 static bool ccstrAtPut(const char* name, size_t len, ccstr* value, Flag::Flags origin);
398 398 static bool ccstrAtPut(const char* name, ccstr* value, Flag::Flags origin) { return ccstrAtPut(name, strlen(name), value, origin); }
399 399
400 400 // Returns false if name is not a command line flag.
401 401 static bool wasSetOnCmdline(const char* name, bool* value);
402 402 static void printSetFlags(outputStream* out);
403 403
404 404 static void printFlags(outputStream* out, bool withComments);
405 405
406 406 static void verify() PRODUCT_RETURN;
407 407 };
408 408
409 409 // use this for flags that are true by default in the debug version but
410 410 // false in the optimized version, and vice versa
411 411 #ifdef ASSERT
412 412 #define trueInDebug true
413 413 #define falseInDebug false
414 414 #else
415 415 #define trueInDebug false
416 416 #define falseInDebug true
417 417 #endif
418 418
419 419 // use this for flags that are true per default in the product build
420 420 // but false in development builds, and vice versa
421 421 #ifdef PRODUCT
422 422 #define trueInProduct true
423 423 #define falseInProduct false
424 424 #else
425 425 #define trueInProduct false
426 426 #define falseInProduct true
427 427 #endif
428 428
429 429 #ifdef JAVASE_EMBEDDED
430 430 #define falseInEmbedded false
431 431 #else
432 432 #define falseInEmbedded true
433 433 #endif
434 434
435 435 // develop flags are settable / visible only during development and are constant in the PRODUCT version
436 436 // product flags are always settable / visible
437 437 // notproduct flags are settable / visible only during development and are not declared in the PRODUCT version
438 438
439 439 // A flag must be declared with one of the following types:
440 440 // bool, intx, uintx, ccstr.
441 441 // The type "ccstr" is an alias for "const char*" and is used
442 442 // only in this file, because the macrology requires single-token type names.
443 443
444 444 // Note: Diagnostic options not meant for VM tuning or for product modes.
445 445 // They are to be used for VM quality assurance or field diagnosis
446 446 // of VM bugs. They are hidden so that users will not be encouraged to
447 447 // try them as if they were VM ordinary execution options. However, they
448 448 // are available in the product version of the VM. Under instruction
449 449 // from support engineers, VM customers can turn them on to collect
450 450 // diagnostic information about VM problems. To use a VM diagnostic
451 451 // option, you must first specify +UnlockDiagnosticVMOptions.
452 452 // (This master switch also affects the behavior of -Xprintflags.)
453 453 //
454 454 // experimental flags are in support of features that are not
455 455 // part of the officially supported product, but are available
456 456 // for experimenting with. They could, for example, be performance
457 457 // features that may not have undergone full or rigorous QA, but which may
458 458 // help performance in some cases and released for experimentation
459 459 // by the community of users and developers. This flag also allows one to
460 460 // be able to build a fully supported product that nonetheless also
461 461 // ships with some unsupported, lightly tested, experimental features.
462 462 // Like the UnlockDiagnosticVMOptions flag above, there is a corresponding
463 463 // UnlockExperimentalVMOptions flag, which allows the control and
464 464 // modification of the experimental flags.
465 465 //
466 466 // Nota bene: neither diagnostic nor experimental options should be used casually,
467 467 // and they are not supported on production loads, except under explicit
468 468 // direction from support engineers.
469 469 //
470 470 // manageable flags are writeable external product flags.
471 471 // They are dynamically writeable through the JDK management interface
472 472 // (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole.
473 473 // These flags are external exported interface (see CCC). The list of
474 474 // manageable flags can be queried programmatically through the management
475 475 // interface.
476 476 //
477 477 // A flag can be made as "manageable" only if
478 478 // - the flag is defined in a CCC as an external exported interface.
479 479 // - the VM implementation supports dynamic setting of the flag.
480 480 // This implies that the VM must *always* query the flag variable
481 481 // and not reuse state related to the flag state at any given time.
482 482 // - you want the flag to be queried programmatically by the customers.
483 483 //
484 484 // product_rw flags are writeable internal product flags.
485 485 // They are like "manageable" flags but for internal/private use.
486 486 // The list of product_rw flags are internal/private flags which
487 487 // may be changed/removed in a future release. It can be set
488 488 // through the management interface to get/set value
489 489 // when the name of flag is supplied.
490 490 //
491 491 // A flag can be made as "product_rw" only if
492 492 // - the VM implementation supports dynamic setting of the flag.
493 493 // This implies that the VM must *always* query the flag variable
494 494 // and not reuse state related to the flag state at any given time.
495 495 //
496 496 // Note that when there is a need to support develop flags to be writeable,
497 497 // it can be done in the same way as product_rw.
498 498
499 499 #define RUNTIME_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw, lp64_product) \
500 500 \
501 501 lp64_product(bool, UseCompressedOops, false, \
502 502 "Use 32-bit object references in 64-bit VM. " \
503 503 "lp64_product means flag is always constant in 32 bit VM") \
504 504 \
505 505 lp64_product(bool, UseCompressedClassPointers, false, \
506 506 "Use 32-bit class pointers in 64-bit VM. " \
507 507 "lp64_product means flag is always constant in 32 bit VM") \
508 508 \
509 509 notproduct(bool, CheckCompressedOops, true, \
510 510 "Generate checks in encoding/decoding code in debug VM") \
511 511 \
512 512 product_pd(uintx, HeapBaseMinAddress, \
513 513 "OS specific low limit for heap base address") \
514 514 \
515 515 diagnostic(bool, PrintCompressedOopsMode, false, \
516 516 "Print compressed oops base address and encoding mode") \
517 517 \
518 518 lp64_product(intx, ObjectAlignmentInBytes, 8, \
519 519 "Default object alignment in bytes, 8 is minimum") \
520 520 \
521 521 product(bool, AssumeMP, false, \
522 522 "Instruct the VM to assume multiple processors are available") \
523 523 \
524 524 /* UseMembar is theoretically a temp flag used for memory barrier \
525 525 * removal testing. It was supposed to be removed before FCS but has \
526 526 * been re-added (see 6401008) */ \
527 527 product_pd(bool, UseMembar, \
528 528 "(Unstable) Issues membars on thread state transitions") \
529 529 \
530 530 develop(bool, CleanChunkPoolAsync, falseInEmbedded, \
531 531 "Clean the chunk pool asynchronously") \
532 532 \
533 533 /* Temporary: See 6948537 */ \
534 534 experimental(bool, UseMemSetInBOT, true, \
535 535 "(Unstable) uses memset in BOT updates in GC code") \
536 536 \
537 537 diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \
538 538 "Enable normal processing of flags relating to field diagnostics")\
539 539 \
540 540 experimental(bool, UnlockExperimentalVMOptions, false, \
541 541 "Enable normal processing of flags relating to experimental " \
542 542 "features") \
543 543 \
544 544 product(bool, JavaMonitorsInStackTrace, true, \
545 545 "Print information about Java monitor locks when the stacks are" \
546 546 "dumped") \
547 547 \
548 548 product_pd(bool, UseLargePages, \
549 549 "Use large page memory") \
550 550 \
551 551 product_pd(bool, UseLargePagesIndividualAllocation, \
552 552 "Allocate large pages individually for better affinity") \
553 553 \
554 554 develop(bool, LargePagesIndividualAllocationInjectError, false, \
555 555 "Fail large pages individual allocation") \
556 556 \
557 557 product(bool, UseLargePagesInMetaspace, false, \
558 558 "Use large page memory in metaspace. " \
559 559 "Only used if UseLargePages is enabled.") \
560 560 \
561 561 develop(bool, TracePageSizes, false, \
562 562 "Trace page size selection and usage") \
563 563 \
564 564 product(bool, UseNUMA, false, \
565 565 "Use NUMA if available") \
566 566 \
567 567 product(bool, UseNUMAInterleaving, false, \
568 568 "Interleave memory across NUMA nodes if available") \
569 569 \
570 570 product(uintx, NUMAInterleaveGranularity, 2*M, \
571 571 "Granularity to use for NUMA interleaving on Windows OS") \
572 572 \
573 573 product(bool, ForceNUMA, false, \
574 574 "Force NUMA optimizations on single-node/UMA systems") \
575 575 \
576 576 product(uintx, NUMAChunkResizeWeight, 20, \
577 577 "Percentage (0-100) used to weigh the current sample when " \
578 578 "computing exponentially decaying average for " \
579 579 "AdaptiveNUMAChunkSizing") \
580 580 \
581 581 product(uintx, NUMASpaceResizeRate, 1*G, \
582 582 "Do not reallocate more than this amount per collection") \
583 583 \
584 584 product(bool, UseAdaptiveNUMAChunkSizing, true, \
585 585 "Enable adaptive chunk sizing for NUMA") \
586 586 \
587 587 product(bool, NUMAStats, false, \
588 588 "Print NUMA stats in detailed heap information") \
589 589 \
590 590 product(uintx, NUMAPageScanRate, 256, \
591 591 "Maximum number of pages to include in the page scan procedure") \
592 592 \
593 593 product_pd(bool, NeedsDeoptSuspend, \
594 594 "True for register window machines (sparc/ia64)") \
595 595 \
596 596 product(intx, UseSSE, 99, \
597 597 "Highest supported SSE instructions set on x86/x64") \
598 598 \
599 599 product(bool, UseAES, false, \
600 600 "Control whether AES instructions can be used on x86/x64") \
601 601 \
602 602 product(bool, UseSHA, false, \
603 603 "Control whether SHA instructions can be used on SPARC") \
604 604 \
605 605 product(uintx, LargePageSizeInBytes, 0, \
606 606 "Large page size (0 to let VM choose the page size)") \
607 607 \
608 608 product(uintx, LargePageHeapSizeThreshold, 128*M, \
609 609 "Use large pages if maximum heap is at least this big") \
610 610 \
611 611 product(bool, ForceTimeHighResolution, false, \
612 612 "Using high time resolution (for Win32 only)") \
613 613 \
614 614 develop(bool, TraceItables, false, \
615 615 "Trace initialization and use of itables") \
616 616 \
617 617 develop(bool, TracePcPatching, false, \
618 618 "Trace usage of frame::patch_pc") \
619 619 \
620 620 develop(bool, TraceJumps, false, \
621 621 "Trace assembly jumps in thread ring buffer") \
622 622 \
623 623 develop(bool, TraceRelocator, false, \
624 624 "Trace the bytecode relocator") \
625 625 \
626 626 develop(bool, TraceLongCompiles, false, \
627 627 "Print out every time compilation is longer than " \
628 628 "a given threshold") \
629 629 \
630 630 develop(bool, SafepointALot, false, \
631 631 "Generate a lot of safepoints. This works with " \
632 632 "GuaranteedSafepointInterval") \
633 633 \
634 634 product_pd(bool, BackgroundCompilation, \
635 635 "A thread requesting compilation is not blocked during " \
636 636 "compilation") \
637 637 \
638 638 product(bool, PrintVMQWaitTime, false, \
639 639 "Print out the waiting time in VM operation queue") \
640 640 \
641 641 develop(bool, NoYieldsInMicrolock, false, \
642 642 "Disable yields in microlock") \
643 643 \
644 644 develop(bool, TraceOopMapGeneration, false, \
645 645 "Show OopMapGeneration") \
646 646 \
647 647 product(bool, MethodFlushing, true, \
648 648 "Reclamation of zombie and not-entrant methods") \
649 649 \
650 650 develop(bool, VerifyStack, false, \
651 651 "Verify stack of each thread when it is entering a runtime call") \
652 652 \
653 653 diagnostic(bool, ForceUnreachable, false, \
654 654 "Make all non code cache addresses to be unreachable by " \
655 655 "forcing use of 64bit literal fixups") \
656 656 \
657 657 notproduct(bool, StressDerivedPointers, false, \
658 658 "Force scavenge when a derived pointer is detected on stack " \
659 659 "after rtm call") \
660 660 \
661 661 develop(bool, TraceDerivedPointers, false, \
662 662 "Trace traversal of derived pointers on stack") \
663 663 \
664 664 notproduct(bool, TraceCodeBlobStacks, false, \
665 665 "Trace stack-walk of codeblobs") \
666 666 \
667 667 product(bool, PrintJNIResolving, false, \
668 668 "Used to implement -v:jni") \
669 669 \
670 670 notproduct(bool, PrintRewrites, false, \
671 671 "Print methods that are being rewritten") \
672 672 \
673 673 product(bool, UseInlineCaches, true, \
674 674 "Use Inline Caches for virtual calls ") \
675 675 \
676 676 develop(bool, InlineArrayCopy, true, \
677 677 "Inline arraycopy native that is known to be part of " \
678 678 "base library DLL") \
679 679 \
680 680 develop(bool, InlineObjectHash, true, \
681 681 "Inline Object::hashCode() native that is known to be part " \
682 682 "of base library DLL") \
683 683 \
684 684 develop(bool, InlineNatives, true, \
685 685 "Inline natives that are known to be part of base library DLL") \
686 686 \
687 687 develop(bool, InlineMathNatives, true, \
688 688 "Inline SinD, CosD, etc.") \
689 689 \
690 690 develop(bool, InlineClassNatives, true, \
691 691 "Inline Class.isInstance, etc") \
692 692 \
693 693 develop(bool, InlineThreadNatives, true, \
694 694 "Inline Thread.currentThread, etc") \
695 695 \
696 696 develop(bool, InlineUnsafeOps, true, \
697 697 "Inline memory ops (native methods) from sun.misc.Unsafe") \
698 698 \
699 699 product(bool, CriticalJNINatives, true, \
700 700 "Check for critical JNI entry points") \
701 701 \
702 702 notproduct(bool, StressCriticalJNINatives, false, \
703 703 "Exercise register saving code in critical natives") \
704 704 \
705 705 product(bool, UseSSE42Intrinsics, false, \
706 706 "SSE4.2 versions of intrinsics") \
707 707 \
708 708 product(bool, UseAESIntrinsics, false, \
709 709 "Use intrinsics for AES versions of crypto") \
710 710 \
711 711 product(bool, UseSHA1Intrinsics, false, \
712 712 "Use intrinsics for SHA-1 crypto hash function") \
713 713 \
714 714 product(bool, UseSHA256Intrinsics, false, \
715 715 "Use intrinsics for SHA-224 and SHA-256 crypto hash functions") \
716 716 \
717 717 product(bool, UseSHA512Intrinsics, false, \
718 718 "Use intrinsics for SHA-384 and SHA-512 crypto hash functions") \
719 719 \
720 720 product(bool, UseCRC32Intrinsics, false, \
721 721 "use intrinsics for java.util.zip.CRC32") \
722 722 \
723 723 develop(bool, TraceCallFixup, false, \
724 724 "Trace all call fixups") \
725 725 \
726 726 develop(bool, DeoptimizeALot, false, \
727 727 "Deoptimize at every exit from the runtime system") \
728 728 \
729 729 notproduct(ccstrlist, DeoptimizeOnlyAt, "", \
730 730 "A comma separated list of bcis to deoptimize at") \
731 731 \
732 732 product(bool, DeoptimizeRandom, false, \
733 733 "Deoptimize random frames on random exit from the runtime system")\
734 734 \
735 735 notproduct(bool, ZombieALot, false, \
736 736 "Create zombies (non-entrant) at exit from the runtime system") \
737 737 \
738 738 product(bool, UnlinkSymbolsALot, false, \
739 739 "Unlink unreferenced symbols from the symbol table at safepoints")\
740 740 \
741 741 notproduct(bool, WalkStackALot, false, \
742 742 "Trace stack (no print) at every exit from the runtime system") \
743 743 \
744 744 product(bool, Debugging, false, \
745 745 "Set when executing debug methods in debug.cpp " \
746 746 "(to prevent triggering assertions)") \
747 747 \
748 748 notproduct(bool, StrictSafepointChecks, trueInDebug, \
749 749 "Enable strict checks that safepoints cannot happen for threads " \
750 750 "that use No_Safepoint_Verifier") \
751 751 \
752 752 notproduct(bool, VerifyLastFrame, false, \
753 753 "Verify oops on last frame on entry to VM") \
754 754 \
755 755 develop(bool, TraceHandleAllocation, false, \
756 756 "Print out warnings when suspiciously many handles are allocated")\
757 757 \
758 758 product(bool, UseCompilerSafepoints, true, \
759 759 "Stop at safepoints in compiled code") \
760 760 \
761 761 product(bool, FailOverToOldVerifier, true, \
762 762 "Fail over to old verifier when split verifier fails") \
763 763 \
764 764 develop(bool, ShowSafepointMsgs, false, \
765 765 "Show message about safepoint synchronization") \
766 766 \
767 767 product(bool, SafepointTimeout, false, \
768 768 "Time out and warn or fail after SafepointTimeoutDelay " \
769 769 "milliseconds if failed to reach safepoint") \
770 770 \
771 771 develop(bool, DieOnSafepointTimeout, false, \
772 772 "Die upon failure to reach safepoint (see SafepointTimeout)") \
773 773 \
774 774 /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \
775 775 /* typically, at most a few retries are needed */ \
776 776 product(intx, SuspendRetryCount, 50, \
777 777 "Maximum retry count for an external suspend request") \
778 778 \
779 779 product(intx, SuspendRetryDelay, 5, \
780 780 "Milliseconds to delay per retry (* current_retry_count)") \
781 781 \
782 782 product(bool, AssertOnSuspendWaitFailure, false, \
783 783 "Assert/Guarantee on external suspend wait failure") \
784 784 \
785 785 product(bool, TraceSuspendWaitFailures, false, \
786 786 "Trace external suspend wait failures") \
787 787 \
788 788 product(bool, MaxFDLimit, true, \
789 789 "Bump the number of file descriptors to maximum in Solaris") \
790 790 \
791 791 diagnostic(bool, LogEvents, true, \
792 792 "Enable the various ring buffer event logs") \
793 793 \
794 794 diagnostic(uintx, LogEventsBufferEntries, 10, \
795 795 "Number of ring buffer event logs") \
796 796 \
797 797 product(bool, BytecodeVerificationRemote, true, \
798 798 "Enable the Java bytecode verifier for remote classes") \
799 799 \
800 800 product(bool, BytecodeVerificationLocal, false, \
801 801 "Enable the Java bytecode verifier for local classes") \
802 802 \
803 803 develop(bool, ForceFloatExceptions, trueInDebug, \
804 804 "Force exceptions on FP stack under/overflow") \
805 805 \
806 806 develop(bool, VerifyStackAtCalls, false, \
807 807 "Verify that the stack pointer is unchanged after calls") \
808 808 \
809 809 develop(bool, TraceJavaAssertions, false, \
810 810 "Trace java language assertions") \
811 811 \
812 812 notproduct(bool, CheckAssertionStatusDirectives, false, \
813 813 "Temporary - see javaClasses.cpp") \
814 814 \
815 815 notproduct(bool, PrintMallocFree, false, \
816 816 "Trace calls to C heap malloc/free allocation") \
817 817 \
818 818 product(bool, PrintOopAddress, false, \
819 819 "Always print the location of the oop") \
820 820 \
821 821 notproduct(bool, VerifyCodeCacheOften, false, \
822 822 "Verify compiled-code cache often") \
823 823 \
824 824 develop(bool, ZapDeadCompiledLocals, false, \
825 825 "Zap dead locals in compiler frames") \
826 826 \
827 827 notproduct(bool, ZapDeadLocalsOld, false, \
828 828 "Zap dead locals (old version, zaps all frames when " \
829 829 "entering the VM") \
830 830 \
831 831 notproduct(bool, CheckOopishValues, false, \
832 832 "Warn if value contains oop (requires ZapDeadLocals)") \
833 833 \
834 834 develop(bool, UseMallocOnly, false, \
835 835 "Use only malloc/free for allocation (no resource area/arena)") \
836 836 \
837 837 develop(bool, PrintMalloc, false, \
838 838 "Print all malloc/free calls") \
839 839 \
840 840 develop(bool, PrintMallocStatistics, false, \
841 841 "Print malloc/free statistics") \
842 842 \
843 843 develop(bool, ZapResourceArea, trueInDebug, \
844 844 "Zap freed resource/arena space with 0xABABABAB") \
845 845 \
846 846 notproduct(bool, ZapVMHandleArea, trueInDebug, \
847 847 "Zap freed VM handle space with 0xBCBCBCBC") \
848 848 \
849 849 develop(bool, ZapJNIHandleArea, trueInDebug, \
850 850 "Zap freed JNI handle space with 0xFEFEFEFE") \
851 851 \
852 852 notproduct(bool, ZapStackSegments, trueInDebug, \
853 853 "Zap allocated/freed stack segments with 0xFADFADED") \
854 854 \
855 855 develop(bool, ZapUnusedHeapArea, trueInDebug, \
856 856 "Zap unused heap space with 0xBAADBABE") \
857 857 \
858 858 develop(bool, TraceZapUnusedHeapArea, false, \
859 859 "Trace zapping of unused heap space") \
860 860 \
861 861 develop(bool, CheckZapUnusedHeapArea, false, \
862 862 "Check zapping of unused heap space") \
863 863 \
864 864 develop(bool, ZapFillerObjects, trueInDebug, \
865 865 "Zap filler objects with 0xDEAFBABE") \
866 866 \
867 867 develop(bool, PrintVMMessages, true, \
868 868 "Print VM messages on console") \
869 869 \
870 870 product(bool, PrintGCApplicationConcurrentTime, false, \
871 871 "Print the time the application has been running") \
872 872 \
873 873 product(bool, PrintGCApplicationStoppedTime, false, \
874 874 "Print the time the application has been stopped") \
875 875 \
876 876 diagnostic(bool, VerboseVerification, false, \
877 877 "Display detailed verification details") \
878 878 \
879 879 notproduct(uintx, ErrorHandlerTest, 0, \
880 880 "If > 0, provokes an error after VM initialization; the value " \
881 881 "determines which error to provoke. See test_error_handler() " \
882 882 "in debug.cpp.") \
883 883 \
884 884 develop(bool, Verbose, false, \
885 885 "Print additional debugging information from other modes") \
886 886 \
887 887 develop(bool, PrintMiscellaneous, false, \
888 888 "Print uncategorized debugging information (requires +Verbose)") \
889 889 \
890 890 develop(bool, WizardMode, false, \
891 891 "Print much more debugging information") \
892 892 \
893 893 product(bool, ShowMessageBoxOnError, false, \
894 894 "Keep process alive on VM fatal error") \
895 895 \
896 896 product(bool, CreateMinidumpOnCrash, false, \
897 897 "Create minidump on VM fatal error") \
898 898 \
899 899 product_pd(bool, UseOSErrorReporting, \
900 900 "Let VM fatal error propagate to the OS (ie. WER on Windows)") \
901 901 \
902 902 product(bool, SuppressFatalErrorMessage, false, \
903 903 "Report NO fatal error message (avoid deadlock)") \
904 904 \
905 905 product(ccstrlist, OnError, "", \
906 906 "Run user-defined commands on fatal error; see VMError.cpp " \
907 907 "for examples") \
908 908 \
909 909 product(ccstrlist, OnOutOfMemoryError, "", \
910 910 "Run user-defined commands on first java.lang.OutOfMemoryError") \
911 911 \
912 912 manageable(bool, HeapDumpBeforeFullGC, false, \
913 913 "Dump heap to file before any major stop-the-world GC") \
914 914 \
915 915 manageable(bool, HeapDumpAfterFullGC, false, \
916 916 "Dump heap to file after any major stop-the-world GC") \
917 917 \
918 918 manageable(bool, HeapDumpOnOutOfMemoryError, false, \
919 919 "Dump heap to file when java.lang.OutOfMemoryError is thrown") \
920 920 \
921 921 manageable(ccstr, HeapDumpPath, NULL, \
922 922 "When HeapDumpOnOutOfMemoryError is on, the path (filename or " \
923 923 "directory) of the dump file (defaults to java_pid<pid>.hprof " \
924 924 "in the working directory)") \
925 925 \
926 926 develop(uintx, SegmentedHeapDumpThreshold, 2*G, \
927 927 "Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) " \
928 928 "when the heap usage is larger than this") \
929 929 \
930 930 develop(uintx, HeapDumpSegmentSize, 1*G, \
931 931 "Approximate segment size when generating a segmented heap dump") \
932 932 \
933 933 develop(bool, BreakAtWarning, false, \
934 934 "Execute breakpoint upon encountering VM warning") \
935 935 \
936 936 develop(bool, TraceVMOperation, false, \
937 937 "Trace VM operations") \
938 938 \
939 939 develop(bool, UseFakeTimers, false, \
940 940 "Tell whether the VM should use system time or a fake timer") \
941 941 \
942 942 product(ccstr, NativeMemoryTracking, "off", \
943 943 "Native memory tracking options") \
944 944 \
945 945 diagnostic(bool, PrintNMTStatistics, false, \
946 946 "Print native memory tracking summary data if it is on") \
947 947 \
948 948 diagnostic(bool, LogCompilation, false, \
949 949 "Log compilation activity in detail to LogFile") \
950 950 \
951 951 product(bool, PrintCompilation, false, \
952 952 "Print compilations") \
953 953 \
954 954 diagnostic(bool, TraceNMethodInstalls, false, \
955 955 "Trace nmethod installation") \
956 956 \
957 957 diagnostic(intx, ScavengeRootsInCode, 2, \
958 958 "0: do not allow scavengable oops in the code cache; " \
959 959 "1: allow scavenging from the code cache; " \
960 960 "2: emit as many constants as the compiler can see") \
961 961 \
962 962 product(bool, AlwaysRestoreFPU, false, \
963 963 "Restore the FPU control word after every JNI call (expensive)") \
964 964 \
965 965 diagnostic(bool, PrintCompilation2, false, \
966 966 "Print additional statistics per compilation") \
967 967 \
968 968 diagnostic(bool, PrintAdapterHandlers, false, \
969 969 "Print code generated for i2c/c2i adapters") \
970 970 \
971 971 diagnostic(bool, VerifyAdapterCalls, trueInDebug, \
972 972 "Verify that i2c/c2i adapters are called properly") \
973 973 \
974 974 develop(bool, VerifyAdapterSharing, false, \
975 975 "Verify that the code for shared adapters is the equivalent") \
976 976 \
977 977 diagnostic(bool, PrintAssembly, false, \
978 978 "Print assembly code (using external disassembler.so)") \
979 979 \
980 980 diagnostic(ccstr, PrintAssemblyOptions, NULL, \
981 981 "Print options string passed to disassembler.so") \
982 982 \
983 983 diagnostic(bool, PrintNMethods, false, \
984 984 "Print assembly code for nmethods when generated") \
985 985 \
986 986 diagnostic(bool, PrintNativeNMethods, false, \
987 987 "Print assembly code for native nmethods when generated") \
988 988 \
989 989 develop(bool, PrintDebugInfo, false, \
990 990 "Print debug information for all nmethods when generated") \
991 991 \
992 992 develop(bool, PrintRelocations, false, \
993 993 "Print relocation information for all nmethods when generated") \
994 994 \
995 995 develop(bool, PrintDependencies, false, \
996 996 "Print dependency information for all nmethods when generated") \
997 997 \
998 998 develop(bool, PrintExceptionHandlers, false, \
999 999 "Print exception handler tables for all nmethods when generated") \
1000 1000 \
1001 1001 develop(bool, StressCompiledExceptionHandlers, false, \
1002 1002 "Exercise compiled exception handlers") \
1003 1003 \
1004 1004 develop(bool, InterceptOSException, false, \
1005 1005 "Start debugger when an implicit OS (e.g. NULL) " \
1006 1006 "exception happens") \
1007 1007 \
1008 1008 product(bool, PrintCodeCache, false, \
1009 1009 "Print the code cache memory usage when exiting") \
1010 1010 \
1011 1011 develop(bool, PrintCodeCache2, false, \
1012 1012 "Print detailed usage information on the code cache when exiting")\
1013 1013 \
1014 1014 product(bool, PrintCodeCacheOnCompilation, false, \
1015 1015 "Print the code cache memory usage each time a method is " \
1016 1016 "compiled") \
1017 1017 \
1018 1018 diagnostic(bool, PrintStubCode, false, \
1019 1019 "Print generated stub code") \
1020 1020 \
1021 1021 product(bool, StackTraceInThrowable, true, \
1022 1022 "Collect backtrace in throwable when exception happens") \
1023 1023 \
1024 1024 product(bool, OmitStackTraceInFastThrow, true, \
1025 1025 "Omit backtraces for some 'hot' exceptions in optimized code") \
1026 1026 \
1027 1027 product(bool, ProfilerPrintByteCodeStatistics, false, \
1028 1028 "Print bytecode statistics when dumping profiler output") \
1029 1029 \
1030 1030 product(bool, ProfilerRecordPC, false, \
1031 1031 "Collect ticks for each 16 byte interval of compiled code") \
1032 1032 \
1033 1033 product(bool, ProfileVM, false, \
1034 1034 "Profile ticks that fall within VM (either in the VM Thread " \
1035 1035 "or VM code called through stubs)") \
1036 1036 \
1037 1037 product(bool, ProfileIntervals, false, \
1038 1038 "Print profiles for each interval (see ProfileIntervalsTicks)") \
1039 1039 \
1040 1040 notproduct(bool, ProfilerCheckIntervals, false, \
1041 1041 "Collect and print information on spacing of profiler ticks") \
1042 1042 \
1043 1043 develop(bool, PrintJVMWarnings, false, \
1044 1044 "Print warnings for unimplemented JVM functions") \
1045 1045 \
1046 1046 product(bool, PrintWarnings, true, \
1047 1047 "Print JVM warnings to output stream") \
1048 1048 \
1049 1049 notproduct(uintx, WarnOnStalledSpinLock, 0, \
1050 1050 "Print warnings for stalled SpinLocks") \
1051 1051 \
1052 1052 product(bool, RegisterFinalizersAtInit, true, \
1053 1053 "Register finalizable objects at end of Object.<init> or " \
1054 1054 "after allocation") \
1055 1055 \
1056 1056 develop(bool, RegisterReferences, true, \
1057 1057 "Tell whether the VM should register soft/weak/final/phantom " \
1058 1058 "references") \
1059 1059 \
1060 1060 develop(bool, IgnoreRewrites, false, \
1061 1061 "Suppress rewrites of bytecodes in the oopmap generator. " \
1062 1062 "This is unsafe!") \
1063 1063 \
1064 1064 develop(bool, PrintCodeCacheExtension, false, \
1065 1065 "Print extension of code cache") \
1066 1066 \
1067 1067 develop(bool, UsePrivilegedStack, true, \
1068 1068 "Enable the security JVM functions") \
1069 1069 \
1070 1070 develop(bool, ProtectionDomainVerification, true, \
1071 1071 "Verify protection domain before resolution in system dictionary")\
1072 1072 \
1073 1073 product(bool, ClassUnloading, true, \
1074 1074 "Do unloading of classes") \
1075 1075 \
1076 1076 product(bool, ClassUnloadingWithConcurrentMark, true, \
1077 1077 "Do unloading of classes with a concurrent marking cycle") \
1078 1078 \
1079 1079 develop(bool, DisableStartThread, false, \
1080 1080 "Disable starting of additional Java threads " \
1081 1081 "(for debugging only)") \
1082 1082 \
1083 1083 develop(bool, MemProfiling, false, \
1084 1084 "Write memory usage profiling to log file") \
1085 1085 \
1086 1086 notproduct(bool, PrintSystemDictionaryAtExit, false, \
1087 1087 "Print the system dictionary at exit") \
1088 1088 \
1089 1089 experimental(intx, PredictedLoadedClassCount, 0, \
1090 1090 "Experimental: Tune loaded class cache starting size") \
1091 1091 \
1092 1092 diagnostic(bool, UnsyncloadClass, false, \
1093 1093 "Unstable: VM calls loadClass unsynchronized. Custom " \
1094 1094 "class loader must call VM synchronized for findClass " \
1095 1095 "and defineClass.") \
1096 1096 \
1097 1097 product(bool, AlwaysLockClassLoader, false, \
1098 1098 "Require the VM to acquire the class loader lock before calling " \
1099 1099 "loadClass() even for class loaders registering " \
1100 1100 "as parallel capable") \
1101 1101 \
1102 1102 product(bool, AllowParallelDefineClass, false, \
1103 1103 "Allow parallel defineClass requests for class loaders " \
1104 1104 "registering as parallel capable") \
1105 1105 \
1106 1106 product(bool, MustCallLoadClassInternal, false, \
1107 1107 "Call loadClassInternal() rather than loadClass()") \
1108 1108 \
1109 1109 product_pd(bool, DontYieldALot, \
1110 1110 "Throw away obvious excess yield calls (for Solaris only)") \
1111 1111 \
1112 1112 product_pd(bool, ConvertSleepToYield, \
1113 1113 "Convert sleep(0) to thread yield " \
1114 1114 "(may be off for Solaris to improve GUI)") \
1115 1115 \
1116 1116 product(bool, ConvertYieldToSleep, false, \
1117 1117 "Convert yield to a sleep of MinSleepInterval to simulate Win32 " \
1118 1118 "behavior (Solaris only)") \
1119 1119 \
1120 1120 product(bool, UseBoundThreads, true, \
1121 1121 "Bind user level threads to kernel threads (for Solaris only)") \
1122 1122 \
1123 1123 develop(bool, UseDetachedThreads, true, \
1124 1124 "Use detached threads that are recycled upon termination " \
1125 1125 "(for Solaris only)") \
1126 1126 \
1127 1127 product(bool, UseLWPSynchronization, true, \
1128 1128 "Use LWP-based instead of libthread-based synchronization " \
1129 1129 "(SPARC only)") \
1130 1130 \
1131 1131 product(ccstr, SyncKnobs, NULL, \
1132 1132 "(Unstable) Various monitor synchronization tunables") \
1133 1133 \
1134 1134 product(intx, EmitSync, 0, \
1135 1135 "(Unsafe, Unstable) " \
1136 1136 "Control emission of inline sync fast-path code") \
1137 1137 \
1138 1138 product(intx, MonitorBound, 0, "Bound Monitor population") \
1139 1139 \
1140 1140 product(bool, MonitorInUseLists, false, "Track Monitors for Deflation") \
1141 1141 \
1142 1142 product(intx, SyncFlags, 0, "(Unsafe, Unstable) Experimental Sync flags") \
1143 1143 \
1144 1144 product(intx, SyncVerbose, 0, "(Unstable)") \
1145 1145 \
1146 1146 product(intx, ClearFPUAtPark, 0, "(Unsafe, Unstable)") \
1147 1147 \
1148 1148 product(intx, hashCode, 5, \
1149 1149 "(Unstable) select hashCode generation algorithm") \
1150 1150 \
1151 1151 product(intx, WorkAroundNPTLTimedWaitHang, 1, \
1152 1152 "(Unstable, Linux-specific) " \
1153 1153 "avoid NPTL-FUTEX hang pthread_cond_timedwait") \
1154 1154 \
1155 1155 product(bool, FilterSpuriousWakeups, true, \
1156 1156 "Prevent spurious or premature wakeups from object.wait " \
1157 1157 "(Solaris only)") \
1158 1158 \
1159 1159 experimental(intx, NativeMonitorTimeout, -1, "(Unstable)") \
1160 1160 \
1161 1161 experimental(intx, NativeMonitorFlags, 0, "(Unstable)") \
1162 1162 \
1163 1163 experimental(intx, NativeMonitorSpinLimit, 20, "(Unstable)") \
1164 1164 \
1165 1165 develop(bool, UsePthreads, false, \
1166 1166 "Use pthread-based instead of libthread-based synchronization " \
1167 1167 "(SPARC only)") \
1168 1168 \
1169 1169 product(bool, AdjustConcurrency, false, \
1170 1170 "Call thr_setconcurrency at thread creation time to avoid " \
1171 1171 "LWP starvation on MP systems (for Solaris Only)") \
1172 1172 \
1173 1173 product(bool, ReduceSignalUsage, false, \
1174 1174 "Reduce the use of OS signals in Java and/or the VM") \
1175 1175 \
1176 1176 develop_pd(bool, ShareVtableStubs, \
1177 1177 "Share vtable stubs (smaller code but worse branch prediction") \
1178 1178 \
1179 1179 develop(bool, LoadLineNumberTables, true, \
1180 1180 "Tell whether the class file parser loads line number tables") \
1181 1181 \
1182 1182 develop(bool, LoadLocalVariableTables, true, \
1183 1183 "Tell whether the class file parser loads local variable tables") \
1184 1184 \
1185 1185 develop(bool, LoadLocalVariableTypeTables, true, \
1186 1186 "Tell whether the class file parser loads local variable type" \
1187 1187 "tables") \
1188 1188 \
1189 1189 product(bool, AllowUserSignalHandlers, false, \
1190 1190 "Do not complain if the application installs signal handlers " \
1191 1191 "(Solaris & Linux only)") \
1192 1192 \
1193 1193 product(bool, UseSignalChaining, true, \
1194 1194 "Use signal-chaining to invoke signal handlers installed " \
1195 1195 "by the application (Solaris & Linux only)") \
1196 1196 \
1197 1197 product(bool, UseAltSigs, false, \
1198 1198 "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \
1199 1199 "internal signals (Solaris only)") \
1200 1200 \
1201 1201 product(bool, AllowJNIEnvProxy, false, \
1202 1202 "Allow JNIEnv proxies for jdbx") \
|
↓ open down ↓ |
1202 lines elided |
↑ open up ↑ |
1203 1203 \
1204 1204 product(bool, JNIDetachReleasesMonitors, true, \
1205 1205 "JNI DetachCurrentThread releases monitors owned by thread") \
1206 1206 \
1207 1207 product(bool, RestoreMXCSROnJNICalls, false, \
1208 1208 "Restore MXCSR when returning from JNI calls") \
1209 1209 \
1210 1210 product(bool, CheckJNICalls, false, \
1211 1211 "Verify all arguments to JNI calls") \
1212 1212 \
1213 + product(bool, CheckEndorsedAndExtDirs, false, \
1214 + "Verify the endorsed and extension directories are not used") \
1215 + \
1213 1216 product(bool, UseFastJNIAccessors, true, \
1214 1217 "Use optimized versions of Get<Primitive>Field") \
1215 1218 \
1216 1219 product(intx, MaxJNILocalCapacity, 65536, \
1217 1220 "Maximum allowable local JNI handle capacity to " \
1218 1221 "EnsureLocalCapacity() and PushLocalFrame(), " \
1219 1222 "where <= 0 is unlimited, default: 65536") \
1220 1223 \
1221 1224 product(bool, EagerXrunInit, false, \
1222 1225 "Eagerly initialize -Xrun libraries; allows startup profiling, " \
1223 1226 "but not all -Xrun libraries may support the state of the VM " \
1224 1227 "at this time") \
1225 1228 \
1226 1229 product(bool, PreserveAllAnnotations, false, \
1227 1230 "Preserve RuntimeInvisibleAnnotations as well " \
1228 1231 "as RuntimeVisibleAnnotations") \
1229 1232 \
1230 1233 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \
1231 1234 "Number of OutOfMemoryErrors preallocated with backtrace") \
1232 1235 \
1233 1236 product(bool, LazyBootClassLoader, true, \
1234 1237 "Enable/disable lazy opening of boot class path entries") \
1235 1238 \
1236 1239 product(bool, UseXMMForArrayCopy, false, \
1237 1240 "Use SSE2 MOVQ instruction for Arraycopy") \
1238 1241 \
1239 1242 product(intx, FieldsAllocationStyle, 1, \
1240 1243 "0 - type based with oops first, 1 - with oops last, " \
1241 1244 "2 - oops in super and sub classes are together") \
1242 1245 \
1243 1246 product(bool, CompactFields, true, \
1244 1247 "Allocate nonstatic fields in gaps between previous fields") \
1245 1248 \
1246 1249 notproduct(bool, PrintFieldLayout, false, \
1247 1250 "Print field layout for each class") \
1248 1251 \
1249 1252 product(intx, ContendedPaddingWidth, 128, \
1250 1253 "How many bytes to pad the fields/classes marked @Contended with")\
1251 1254 \
1252 1255 product(bool, EnableContended, true, \
1253 1256 "Enable @Contended annotation support") \
1254 1257 \
1255 1258 product(bool, RestrictContended, true, \
1256 1259 "Restrict @Contended to trusted classes") \
1257 1260 \
1258 1261 product(bool, UseBiasedLocking, true, \
1259 1262 "Enable biased locking in JVM") \
1260 1263 \
1261 1264 product(intx, BiasedLockingStartupDelay, 4000, \
1262 1265 "Number of milliseconds to wait before enabling biased locking") \
1263 1266 \
1264 1267 diagnostic(bool, PrintBiasedLockingStatistics, false, \
1265 1268 "Print statistics of biased locking in JVM") \
1266 1269 \
1267 1270 product(intx, BiasedLockingBulkRebiasThreshold, 20, \
1268 1271 "Threshold of number of revocations per type to try to " \
1269 1272 "rebias all objects in the heap of that type") \
1270 1273 \
1271 1274 product(intx, BiasedLockingBulkRevokeThreshold, 40, \
1272 1275 "Threshold of number of revocations per type to permanently " \
1273 1276 "revoke biases of all objects in the heap of that type") \
1274 1277 \
1275 1278 product(intx, BiasedLockingDecayTime, 25000, \
1276 1279 "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \
1277 1280 "type after previous bulk rebias") \
1278 1281 \
1279 1282 /* tracing */ \
1280 1283 \
1281 1284 notproduct(bool, TraceRuntimeCalls, false, \
1282 1285 "Trace run-time calls") \
1283 1286 \
1284 1287 develop(bool, TraceJNICalls, false, \
1285 1288 "Trace JNI calls") \
1286 1289 \
1287 1290 develop(bool, StressRewriter, false, \
1288 1291 "Stress linktime bytecode rewriting") \
1289 1292 \
1290 1293 notproduct(bool, TraceJVMCalls, false, \
1291 1294 "Trace JVM calls") \
1292 1295 \
1293 1296 product(ccstr, TraceJVMTI, NULL, \
1294 1297 "Trace flags for JVMTI functions and events") \
1295 1298 \
1296 1299 /* This option can change an EMCP method into an obsolete method. */ \
1297 1300 /* This can affect tests that except specific methods to be EMCP. */ \
1298 1301 /* This option should be used with caution. */ \
1299 1302 product(bool, StressLdcRewrite, false, \
1300 1303 "Force ldc -> ldc_w rewrite during RedefineClasses") \
1301 1304 \
1302 1305 product(intx, TraceRedefineClasses, 0, \
1303 1306 "Trace level for JVMTI RedefineClasses") \
1304 1307 \
1305 1308 develop(bool, StressMethodComparator, false, \
1306 1309 "Run the MethodComparator on all loaded methods") \
1307 1310 \
1308 1311 /* change to false by default sometime after Mustang */ \
1309 1312 product(bool, VerifyMergedCPBytecodes, true, \
1310 1313 "Verify bytecodes after RedefineClasses constant pool merging") \
1311 1314 \
1312 1315 develop(bool, TraceJNIHandleAllocation, false, \
1313 1316 "Trace allocation/deallocation of JNI handle blocks") \
1314 1317 \
1315 1318 develop(bool, TraceThreadEvents, false, \
1316 1319 "Trace all thread events") \
1317 1320 \
1318 1321 develop(bool, TraceBytecodes, false, \
1319 1322 "Trace bytecode execution") \
1320 1323 \
1321 1324 develop(bool, TraceClassInitialization, false, \
1322 1325 "Trace class initialization") \
1323 1326 \
1324 1327 develop(bool, TraceExceptions, false, \
1325 1328 "Trace exceptions") \
1326 1329 \
1327 1330 develop(bool, TraceICs, false, \
1328 1331 "Trace inline cache changes") \
1329 1332 \
1330 1333 notproduct(bool, TraceInvocationCounterOverflow, false, \
1331 1334 "Trace method invocation counter overflow") \
1332 1335 \
1333 1336 develop(bool, TraceInlineCacheClearing, false, \
1334 1337 "Trace clearing of inline caches in nmethods") \
1335 1338 \
1336 1339 develop(bool, TraceDependencies, false, \
1337 1340 "Trace dependencies") \
1338 1341 \
1339 1342 develop(bool, VerifyDependencies, trueInDebug, \
1340 1343 "Exercise and verify the compilation dependency mechanism") \
1341 1344 \
1342 1345 develop(bool, TraceNewOopMapGeneration, false, \
1343 1346 "Trace OopMapGeneration") \
1344 1347 \
1345 1348 develop(bool, TraceNewOopMapGenerationDetailed, false, \
1346 1349 "Trace OopMapGeneration: print detailed cell states") \
1347 1350 \
1348 1351 develop(bool, TimeOopMap, false, \
1349 1352 "Time calls to GenerateOopMap::compute_map() in sum") \
1350 1353 \
1351 1354 develop(bool, TimeOopMap2, false, \
1352 1355 "Time calls to GenerateOopMap::compute_map() individually") \
1353 1356 \
1354 1357 develop(bool, TraceMonitorMismatch, false, \
1355 1358 "Trace monitor matching failures during OopMapGeneration") \
1356 1359 \
1357 1360 develop(bool, TraceOopMapRewrites, false, \
1358 1361 "Trace rewriting of method oops during oop map generation") \
1359 1362 \
1360 1363 develop(bool, TraceSafepoint, false, \
1361 1364 "Trace safepoint operations") \
1362 1365 \
1363 1366 develop(bool, TraceICBuffer, false, \
1364 1367 "Trace usage of IC buffer") \
1365 1368 \
1366 1369 develop(bool, TraceCompiledIC, false, \
1367 1370 "Trace changes of compiled IC") \
1368 1371 \
1369 1372 notproduct(bool, TraceZapDeadLocals, false, \
1370 1373 "Trace zapping dead locals") \
1371 1374 \
1372 1375 develop(bool, TraceStartupTime, false, \
1373 1376 "Trace setup time") \
1374 1377 \
1375 1378 develop(bool, TraceProtectionDomainVerification, false, \
1376 1379 "Trace protection domain verification") \
1377 1380 \
1378 1381 develop(bool, TraceClearedExceptions, false, \
1379 1382 "Print when an exception is forcibly cleared") \
1380 1383 \
1381 1384 product(bool, TraceClassResolution, false, \
1382 1385 "Trace all constant pool resolutions (for debugging)") \
1383 1386 \
1384 1387 product(bool, TraceBiasedLocking, false, \
1385 1388 "Trace biased locking in JVM") \
1386 1389 \
1387 1390 product(bool, TraceMonitorInflation, false, \
1388 1391 "Trace monitor inflation in JVM") \
1389 1392 \
1390 1393 /* gc */ \
1391 1394 \
1392 1395 product(bool, UseSerialGC, false, \
1393 1396 "Use the Serial garbage collector") \
1394 1397 \
1395 1398 product(bool, UseG1GC, false, \
1396 1399 "Use the Garbage-First garbage collector") \
1397 1400 \
1398 1401 product(bool, UseParallelGC, false, \
1399 1402 "Use the Parallel Scavenge garbage collector") \
1400 1403 \
1401 1404 product(bool, UseParallelOldGC, false, \
1402 1405 "Use the Parallel Old garbage collector") \
1403 1406 \
1404 1407 product(uintx, HeapMaximumCompactionInterval, 20, \
1405 1408 "How often should we maximally compact the heap (not allowing " \
1406 1409 "any dead space)") \
1407 1410 \
1408 1411 product(uintx, HeapFirstMaximumCompactionCount, 3, \
1409 1412 "The collection count for the first maximum compaction") \
1410 1413 \
1411 1414 product(bool, UseMaximumCompactionOnSystemGC, true, \
1412 1415 "Use maximum compaction in the Parallel Old garbage collector " \
1413 1416 "for a system GC") \
1414 1417 \
1415 1418 product(uintx, ParallelOldDeadWoodLimiterMean, 50, \
1416 1419 "The mean used by the parallel compact dead wood " \
1417 1420 "limiter (a number between 0-100)") \
1418 1421 \
1419 1422 product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \
1420 1423 "The standard deviation used by the parallel compact dead wood " \
1421 1424 "limiter (a number between 0-100)") \
1422 1425 \
1423 1426 product(uintx, ParallelGCThreads, 0, \
1424 1427 "Number of parallel threads parallel gc will use") \
1425 1428 \
1426 1429 product(bool, UseDynamicNumberOfGCThreads, false, \
1427 1430 "Dynamically choose the number of parallel threads " \
1428 1431 "parallel gc will use") \
1429 1432 \
1430 1433 diagnostic(bool, ForceDynamicNumberOfGCThreads, false, \
1431 1434 "Force dynamic selection of the number of " \
1432 1435 "parallel threads parallel gc will use to aid debugging") \
1433 1436 \
1434 1437 product(uintx, HeapSizePerGCThread, ScaleForWordSize(64*M), \
1435 1438 "Size of heap (bytes) per GC thread used in calculating the " \
1436 1439 "number of GC threads") \
1437 1440 \
1438 1441 product(bool, TraceDynamicGCThreads, false, \
1439 1442 "Trace the dynamic GC thread usage") \
1440 1443 \
1441 1444 develop(bool, ParallelOldGCSplitALot, false, \
1442 1445 "Provoke splitting (copying data from a young gen space to " \
1443 1446 "multiple destination spaces)") \
1444 1447 \
1445 1448 develop(uintx, ParallelOldGCSplitInterval, 3, \
1446 1449 "How often to provoke splitting a young gen space") \
1447 1450 \
1448 1451 product(uintx, ConcGCThreads, 0, \
1449 1452 "Number of threads concurrent gc will use") \
1450 1453 \
1451 1454 product(uintx, YoungPLABSize, 4096, \
1452 1455 "Size of young gen promotion LAB's (in HeapWords)") \
1453 1456 \
1454 1457 product(uintx, OldPLABSize, 1024, \
1455 1458 "Size of old gen promotion LAB's (in HeapWords)") \
1456 1459 \
1457 1460 product(uintx, GCTaskTimeStampEntries, 200, \
1458 1461 "Number of time stamp entries per gc worker thread") \
1459 1462 \
1460 1463 product(bool, AlwaysTenure, false, \
1461 1464 "Always tenure objects in eden (ParallelGC only)") \
1462 1465 \
1463 1466 product(bool, NeverTenure, false, \
1464 1467 "Never tenure objects in eden, may tenure on overflow " \
1465 1468 "(ParallelGC only)") \
1466 1469 \
1467 1470 product(bool, ScavengeBeforeFullGC, true, \
1468 1471 "Scavenge youngest generation before each full GC, " \
1469 1472 "used with UseParallelGC") \
1470 1473 \
1471 1474 develop(bool, ScavengeWithObjectsInToSpace, false, \
1472 1475 "Allow scavenges to occur when to-space contains objects") \
1473 1476 \
1474 1477 product(bool, UseConcMarkSweepGC, false, \
1475 1478 "Use Concurrent Mark-Sweep GC in the old generation") \
1476 1479 \
1477 1480 product(bool, ExplicitGCInvokesConcurrent, false, \
1478 1481 "A System.gc() request invokes a concurrent collection; " \
1479 1482 "(effective only when UseConcMarkSweepGC)") \
1480 1483 \
1481 1484 product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \
1482 1485 "A System.gc() request invokes a concurrent collection and " \
1483 1486 "also unloads classes during such a concurrent gc cycle " \
1484 1487 "(effective only when UseConcMarkSweepGC)") \
1485 1488 \
1486 1489 product(bool, GCLockerInvokesConcurrent, false, \
1487 1490 "The exit of a JNI critical section necessitating a scavenge, " \
1488 1491 "also kicks off a background concurrent collection") \
1489 1492 \
1490 1493 product(uintx, GCLockerEdenExpansionPercent, 5, \
1491 1494 "How much the GC can expand the eden by while the GC locker " \
1492 1495 "is active (as a percentage)") \
1493 1496 \
1494 1497 diagnostic(intx, GCLockerRetryAllocationCount, 2, \
1495 1498 "Number of times to retry allocations when " \
1496 1499 "blocked by the GC locker") \
1497 1500 \
1498 1501 develop(bool, UseCMSAdaptiveFreeLists, true, \
1499 1502 "Use adaptive free lists in the CMS generation") \
1500 1503 \
1501 1504 develop(bool, UseAsyncConcMarkSweepGC, true, \
1502 1505 "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\
1503 1506 \
1504 1507 develop(bool, RotateCMSCollectionTypes, false, \
1505 1508 "Rotate the CMS collections among concurrent and STW") \
1506 1509 \
1507 1510 product(bool, UseCMSBestFit, true, \
1508 1511 "Use CMS best fit allocation strategy") \
1509 1512 \
1510 1513 product(bool, UseCMSCollectionPassing, true, \
1511 1514 "Use passing of collection from background to foreground") \
1512 1515 \
1513 1516 product(bool, UseParNewGC, false, \
1514 1517 "Use parallel threads in the new generation") \
1515 1518 \
1516 1519 product(bool, ParallelGCVerbose, false, \
1517 1520 "Verbose output for parallel gc") \
1518 1521 \
1519 1522 product(uintx, ParallelGCBufferWastePct, 10, \
1520 1523 "Wasted fraction of parallel allocation buffer") \
1521 1524 \
1522 1525 diagnostic(bool, ParallelGCRetainPLAB, false, \
1523 1526 "Retain parallel allocation buffers across scavenges; " \
1524 1527 "it is disabled because this currently conflicts with " \
1525 1528 "parallel card scanning under certain conditions.") \
1526 1529 \
1527 1530 product(uintx, TargetPLABWastePct, 10, \
1528 1531 "Target wasted space in last buffer as percent of overall " \
1529 1532 "allocation") \
1530 1533 \
1531 1534 product(uintx, PLABWeight, 75, \
1532 1535 "Percentage (0-100) used to weigh the current sample when " \
1533 1536 "computing exponentially decaying average for ResizePLAB") \
1534 1537 \
1535 1538 product(bool, ResizePLAB, true, \
1536 1539 "Dynamically resize (survivor space) promotion LAB's") \
1537 1540 \
1538 1541 product(bool, PrintPLAB, false, \
1539 1542 "Print (survivor space) promotion LAB's sizing decisions") \
1540 1543 \
1541 1544 product(intx, ParGCArrayScanChunk, 50, \
1542 1545 "Scan a subset of object array and push remainder, if array is " \
1543 1546 "bigger than this") \
1544 1547 \
1545 1548 product(bool, ParGCUseLocalOverflow, false, \
1546 1549 "Instead of a global overflow list, use local overflow stacks") \
1547 1550 \
1548 1551 product(bool, ParGCTrimOverflow, true, \
1549 1552 "Eagerly trim the local overflow lists " \
1550 1553 "(when ParGCUseLocalOverflow)") \
1551 1554 \
1552 1555 notproduct(bool, ParGCWorkQueueOverflowALot, false, \
1553 1556 "Simulate work queue overflow in ParNew") \
1554 1557 \
1555 1558 notproduct(uintx, ParGCWorkQueueOverflowInterval, 1000, \
1556 1559 "An `interval' counter that determines how frequently " \
1557 1560 "we simulate overflow; a smaller number increases frequency") \
1558 1561 \
1559 1562 product(uintx, ParGCDesiredObjsFromOverflowList, 20, \
1560 1563 "The desired number of objects to claim from the overflow list") \
1561 1564 \
1562 1565 diagnostic(uintx, ParGCStridesPerThread, 2, \
1563 1566 "The number of strides per worker thread that we divide up the " \
1564 1567 "card table scanning work into") \
1565 1568 \
1566 1569 diagnostic(intx, ParGCCardsPerStrideChunk, 256, \
1567 1570 "The number of cards in each chunk of the parallel chunks used " \
1568 1571 "during card table scanning") \
1569 1572 \
1570 1573 product(uintx, CMSParPromoteBlocksToClaim, 16, \
1571 1574 "Number of blocks to attempt to claim when refilling CMS LAB's " \
1572 1575 "for parallel GC") \
1573 1576 \
1574 1577 product(uintx, OldPLABWeight, 50, \
1575 1578 "Percentage (0-100) used to weight the current sample when " \
1576 1579 "computing exponentially decaying average for resizing " \
1577 1580 "CMSParPromoteBlocksToClaim") \
1578 1581 \
1579 1582 product(bool, ResizeOldPLAB, true, \
1580 1583 "Dynamically resize (old gen) promotion LAB's") \
1581 1584 \
1582 1585 product(bool, PrintOldPLAB, false, \
1583 1586 "Print (old gen) promotion LAB's sizing decisions") \
1584 1587 \
1585 1588 product(uintx, CMSOldPLABMin, 16, \
1586 1589 "Minimum size of CMS gen promotion LAB caches per worker " \
1587 1590 "per block size") \
1588 1591 \
1589 1592 product(uintx, CMSOldPLABMax, 1024, \
1590 1593 "Maximum size of CMS gen promotion LAB caches per worker " \
1591 1594 "per block size") \
1592 1595 \
1593 1596 product(uintx, CMSOldPLABNumRefills, 4, \
1594 1597 "Nominal number of refills of CMS gen promotion LAB cache " \
1595 1598 "per worker per block size") \
1596 1599 \
1597 1600 product(bool, CMSOldPLABResizeQuicker, false, \
1598 1601 "React on-the-fly during a scavenge to a sudden " \
1599 1602 "change in block demand rate") \
1600 1603 \
1601 1604 product(uintx, CMSOldPLABToleranceFactor, 4, \
1602 1605 "The tolerance of the phase-change detector for on-the-fly " \
1603 1606 "PLAB resizing during a scavenge") \
1604 1607 \
1605 1608 product(uintx, CMSOldPLABReactivityFactor, 2, \
1606 1609 "The gain in the feedback loop for on-the-fly PLAB resizing " \
1607 1610 "during a scavenge") \
1608 1611 \
1609 1612 product(bool, AlwaysPreTouch, false, \
1610 1613 "Force all freshly committed pages to be pre-touched") \
1611 1614 \
1612 1615 product_pd(uintx, CMSYoungGenPerWorker, \
1613 1616 "The maximum size of young gen chosen by default per GC worker " \
1614 1617 "thread available") \
1615 1618 \
1616 1619 product(bool, CMSIncrementalMode, false, \
1617 1620 "Whether CMS GC should operate in \"incremental\" mode") \
1618 1621 \
1619 1622 product(uintx, CMSIncrementalDutyCycle, 10, \
1620 1623 "Percentage (0-100) of CMS incremental mode duty cycle. If " \
1621 1624 "CMSIncrementalPacing is enabled, then this is just the initial " \
1622 1625 "value.") \
1623 1626 \
1624 1627 product(bool, CMSIncrementalPacing, true, \
1625 1628 "Whether the CMS incremental mode duty cycle should be " \
1626 1629 "automatically adjusted") \
1627 1630 \
1628 1631 product(uintx, CMSIncrementalDutyCycleMin, 0, \
1629 1632 "Minimum percentage (0-100) of the CMS incremental duty cycle " \
1630 1633 "used when CMSIncrementalPacing is enabled") \
1631 1634 \
1632 1635 product(uintx, CMSIncrementalSafetyFactor, 10, \
1633 1636 "Percentage (0-100) used to add conservatism when computing the " \
1634 1637 "duty cycle") \
1635 1638 \
1636 1639 product(uintx, CMSIncrementalOffset, 0, \
1637 1640 "Percentage (0-100) by which the CMS incremental mode duty cycle "\
1638 1641 "is shifted to the right within the period between young GCs") \
1639 1642 \
1640 1643 product(uintx, CMSExpAvgFactor, 50, \
1641 1644 "Percentage (0-100) used to weigh the current sample when " \
1642 1645 "computing exponential averages for CMS statistics") \
1643 1646 \
1644 1647 product(uintx, CMS_FLSWeight, 75, \
1645 1648 "Percentage (0-100) used to weigh the current sample when " \
1646 1649 "computing exponentially decaying averages for CMS FLS " \
1647 1650 "statistics") \
1648 1651 \
1649 1652 product(uintx, CMS_FLSPadding, 1, \
1650 1653 "The multiple of deviation from mean to use for buffering " \
1651 1654 "against volatility in free list demand") \
1652 1655 \
1653 1656 product(uintx, FLSCoalescePolicy, 2, \
1654 1657 "CMS: aggressiveness level for coalescing, increasing " \
1655 1658 "from 0 to 4") \
1656 1659 \
1657 1660 product(bool, FLSAlwaysCoalesceLarge, false, \
1658 1661 "CMS: larger free blocks are always available for coalescing") \
1659 1662 \
1660 1663 product(double, FLSLargestBlockCoalesceProximity, 0.99, \
1661 1664 "CMS: the smaller the percentage the greater the coalescing " \
1662 1665 "force") \
1663 1666 \
1664 1667 product(double, CMSSmallCoalSurplusPercent, 1.05, \
1665 1668 "CMS: the factor by which to inflate estimated demand of small " \
1666 1669 "block sizes to prevent coalescing with an adjoining block") \
1667 1670 \
1668 1671 product(double, CMSLargeCoalSurplusPercent, 0.95, \
1669 1672 "CMS: the factor by which to inflate estimated demand of large " \
1670 1673 "block sizes to prevent coalescing with an adjoining block") \
1671 1674 \
1672 1675 product(double, CMSSmallSplitSurplusPercent, 1.10, \
1673 1676 "CMS: the factor by which to inflate estimated demand of small " \
1674 1677 "block sizes to prevent splitting to supply demand for smaller " \
1675 1678 "blocks") \
1676 1679 \
1677 1680 product(double, CMSLargeSplitSurplusPercent, 1.00, \
1678 1681 "CMS: the factor by which to inflate estimated demand of large " \
1679 1682 "block sizes to prevent splitting to supply demand for smaller " \
1680 1683 "blocks") \
1681 1684 \
1682 1685 product(bool, CMSExtrapolateSweep, false, \
1683 1686 "CMS: cushion for block demand during sweep") \
1684 1687 \
1685 1688 product(uintx, CMS_SweepWeight, 75, \
1686 1689 "Percentage (0-100) used to weight the current sample when " \
1687 1690 "computing exponentially decaying average for inter-sweep " \
1688 1691 "duration") \
1689 1692 \
1690 1693 product(uintx, CMS_SweepPadding, 1, \
1691 1694 "The multiple of deviation from mean to use for buffering " \
1692 1695 "against volatility in inter-sweep duration") \
1693 1696 \
1694 1697 product(uintx, CMS_SweepTimerThresholdMillis, 10, \
1695 1698 "Skip block flux-rate sampling for an epoch unless inter-sweep " \
1696 1699 "duration exceeds this threshold in milliseconds") \
1697 1700 \
1698 1701 develop(bool, CMSTraceIncrementalMode, false, \
1699 1702 "Trace CMS incremental mode") \
1700 1703 \
1701 1704 develop(bool, CMSTraceIncrementalPacing, false, \
1702 1705 "Trace CMS incremental mode pacing computation") \
1703 1706 \
1704 1707 develop(bool, CMSTraceThreadState, false, \
1705 1708 "Trace the CMS thread state (enable the trace_state() method)") \
1706 1709 \
1707 1710 product(bool, CMSClassUnloadingEnabled, true, \
1708 1711 "Whether class unloading enabled when using CMS GC") \
1709 1712 \
1710 1713 product(uintx, CMSClassUnloadingMaxInterval, 0, \
1711 1714 "When CMS class unloading is enabled, the maximum CMS cycle " \
1712 1715 "count for which classes may not be unloaded") \
1713 1716 \
1714 1717 product(bool, CMSCompactWhenClearAllSoftRefs, true, \
1715 1718 "Compact when asked to collect CMS gen with " \
1716 1719 "clear_all_soft_refs()") \
1717 1720 \
1718 1721 product(bool, UseCMSCompactAtFullCollection, true, \
1719 1722 "Use Mark-Sweep-Compact algorithm at full collections") \
1720 1723 \
1721 1724 product(uintx, CMSFullGCsBeforeCompaction, 0, \
1722 1725 "Number of CMS full collection done before compaction if > 0") \
1723 1726 \
1724 1727 develop(intx, CMSDictionaryChoice, 0, \
1725 1728 "Use BinaryTreeDictionary as default in the CMS generation") \
1726 1729 \
1727 1730 product(uintx, CMSIndexedFreeListReplenish, 4, \
1728 1731 "Replenish an indexed free list with this number of chunks") \
1729 1732 \
1730 1733 product(bool, CMSReplenishIntermediate, true, \
1731 1734 "Replenish all intermediate free-list caches") \
1732 1735 \
1733 1736 product(bool, CMSSplitIndexedFreeListBlocks, true, \
1734 1737 "When satisfying batched demand, split blocks from the " \
1735 1738 "IndexedFreeList whose size is a multiple of requested size") \
1736 1739 \
1737 1740 product(bool, CMSLoopWarn, false, \
1738 1741 "Warn in case of excessive CMS looping") \
1739 1742 \
1740 1743 develop(bool, CMSOverflowEarlyRestoration, false, \
1741 1744 "Restore preserved marks early") \
1742 1745 \
1743 1746 product(uintx, MarkStackSize, NOT_LP64(32*K) LP64_ONLY(4*M), \
1744 1747 "Size of marking stack") \
1745 1748 \
1746 1749 product(uintx, MarkStackSizeMax, NOT_LP64(4*M) LP64_ONLY(512*M), \
1747 1750 "Maximum size of marking stack") \
1748 1751 \
1749 1752 notproduct(bool, CMSMarkStackOverflowALot, false, \
1750 1753 "Simulate frequent marking stack / work queue overflow") \
1751 1754 \
1752 1755 notproduct(uintx, CMSMarkStackOverflowInterval, 1000, \
1753 1756 "An \"interval\" counter that determines how frequently " \
1754 1757 "to simulate overflow; a smaller number increases frequency") \
1755 1758 \
1756 1759 product(uintx, CMSMaxAbortablePrecleanLoops, 0, \
1757 1760 "(Temporary, subject to experimentation) " \
1758 1761 "Maximum number of abortable preclean iterations, if > 0") \
1759 1762 \
1760 1763 product(intx, CMSMaxAbortablePrecleanTime, 5000, \
1761 1764 "(Temporary, subject to experimentation) " \
1762 1765 "Maximum time in abortable preclean (in milliseconds)") \
1763 1766 \
1764 1767 product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \
1765 1768 "(Temporary, subject to experimentation) " \
1766 1769 "Nominal minimum work per abortable preclean iteration") \
1767 1770 \
1768 1771 manageable(intx, CMSAbortablePrecleanWaitMillis, 100, \
1769 1772 "(Temporary, subject to experimentation) " \
1770 1773 "Time that we sleep between iterations when not given " \
1771 1774 "enough work per iteration") \
1772 1775 \
1773 1776 product(uintx, CMSRescanMultiple, 32, \
1774 1777 "Size (in cards) of CMS parallel rescan task") \
1775 1778 \
1776 1779 product(uintx, CMSConcMarkMultiple, 32, \
1777 1780 "Size (in cards) of CMS concurrent MT marking task") \
1778 1781 \
1779 1782 product(bool, CMSAbortSemantics, false, \
1780 1783 "Whether abort-on-overflow semantics is implemented") \
1781 1784 \
1782 1785 product(bool, CMSParallelInitialMarkEnabled, true, \
1783 1786 "Use the parallel initial mark.") \
1784 1787 \
1785 1788 product(bool, CMSParallelRemarkEnabled, true, \
1786 1789 "Whether parallel remark enabled (only if ParNewGC)") \
1787 1790 \
1788 1791 product(bool, CMSParallelSurvivorRemarkEnabled, true, \
1789 1792 "Whether parallel remark of survivor space " \
1790 1793 "enabled (effective only if CMSParallelRemarkEnabled)") \
1791 1794 \
1792 1795 product(bool, CMSPLABRecordAlways, true, \
1793 1796 "Always record survivor space PLAB boundaries (effective only " \
1794 1797 "if CMSParallelSurvivorRemarkEnabled)") \
1795 1798 \
1796 1799 product(bool, CMSEdenChunksRecordAlways, true, \
1797 1800 "Always record eden chunks used for the parallel initial mark " \
1798 1801 "or remark of eden") \
1799 1802 \
1800 1803 product(bool, CMSPrintEdenSurvivorChunks, false, \
1801 1804 "Print the eden and the survivor chunks used for the parallel " \
1802 1805 "initial mark or remark of the eden/survivor spaces") \
1803 1806 \
1804 1807 product(bool, CMSConcurrentMTEnabled, true, \
1805 1808 "Whether multi-threaded concurrent work enabled " \
1806 1809 "(effective only if ParNewGC)") \
1807 1810 \
1808 1811 product(bool, CMSPrecleaningEnabled, true, \
1809 1812 "Whether concurrent precleaning enabled") \
1810 1813 \
1811 1814 product(uintx, CMSPrecleanIter, 3, \
1812 1815 "Maximum number of precleaning iteration passes") \
1813 1816 \
1814 1817 product(uintx, CMSPrecleanNumerator, 2, \
1815 1818 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence " \
1816 1819 "ratio") \
1817 1820 \
1818 1821 product(uintx, CMSPrecleanDenominator, 3, \
1819 1822 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence " \
1820 1823 "ratio") \
1821 1824 \
1822 1825 product(bool, CMSPrecleanRefLists1, true, \
1823 1826 "Preclean ref lists during (initial) preclean phase") \
1824 1827 \
1825 1828 product(bool, CMSPrecleanRefLists2, false, \
1826 1829 "Preclean ref lists during abortable preclean phase") \
1827 1830 \
1828 1831 product(bool, CMSPrecleanSurvivors1, false, \
1829 1832 "Preclean survivors during (initial) preclean phase") \
1830 1833 \
1831 1834 product(bool, CMSPrecleanSurvivors2, true, \
1832 1835 "Preclean survivors during abortable preclean phase") \
1833 1836 \
1834 1837 product(uintx, CMSPrecleanThreshold, 1000, \
1835 1838 "Do not iterate again if number of dirty cards is less than this")\
1836 1839 \
1837 1840 product(bool, CMSCleanOnEnter, true, \
1838 1841 "Clean-on-enter optimization for reducing number of dirty cards") \
1839 1842 \
1840 1843 product(uintx, CMSRemarkVerifyVariant, 1, \
1841 1844 "Choose variant (1,2) of verification following remark") \
1842 1845 \
1843 1846 product(uintx, CMSScheduleRemarkEdenSizeThreshold, 2*M, \
1844 1847 "If Eden size is below this, do not try to schedule remark") \
1845 1848 \
1846 1849 product(uintx, CMSScheduleRemarkEdenPenetration, 50, \
1847 1850 "The Eden occupancy percentage (0-100) at which " \
1848 1851 "to try and schedule remark pause") \
1849 1852 \
1850 1853 product(uintx, CMSScheduleRemarkSamplingRatio, 5, \
1851 1854 "Start sampling eden top at least before young gen " \
1852 1855 "occupancy reaches 1/<ratio> of the size at which " \
1853 1856 "we plan to schedule remark") \
1854 1857 \
1855 1858 product(uintx, CMSSamplingGrain, 16*K, \
1856 1859 "The minimum distance between eden samples for CMS (see above)") \
1857 1860 \
1858 1861 product(bool, CMSScavengeBeforeRemark, false, \
1859 1862 "Attempt scavenge before the CMS remark step") \
1860 1863 \
1861 1864 develop(bool, CMSTraceSweeper, false, \
1862 1865 "Trace some actions of the CMS sweeper") \
1863 1866 \
1864 1867 product(uintx, CMSWorkQueueDrainThreshold, 10, \
1865 1868 "Don't drain below this size per parallel worker/thief") \
1866 1869 \
1867 1870 manageable(intx, CMSWaitDuration, 2000, \
1868 1871 "Time in milliseconds that CMS thread waits for young GC") \
1869 1872 \
1870 1873 develop(uintx, CMSCheckInterval, 1000, \
1871 1874 "Interval in milliseconds that CMS thread checks if it " \
1872 1875 "should start a collection cycle") \
1873 1876 \
1874 1877 product(bool, CMSYield, true, \
1875 1878 "Yield between steps of CMS") \
1876 1879 \
1877 1880 product(uintx, CMSBitMapYieldQuantum, 10*M, \
1878 1881 "Bitmap operations should process at most this many bits " \
1879 1882 "between yields") \
1880 1883 \
1881 1884 product(bool, CMSDumpAtPromotionFailure, false, \
1882 1885 "Dump useful information about the state of the CMS old " \
1883 1886 "generation upon a promotion failure") \
1884 1887 \
1885 1888 product(bool, CMSPrintChunksInDump, false, \
1886 1889 "In a dump enabled by CMSDumpAtPromotionFailure, include " \
1887 1890 "more detailed information about the free chunks") \
1888 1891 \
1889 1892 product(bool, CMSPrintObjectsInDump, false, \
1890 1893 "In a dump enabled by CMSDumpAtPromotionFailure, include " \
1891 1894 "more detailed information about the allocated objects") \
1892 1895 \
1893 1896 diagnostic(bool, FLSVerifyAllHeapReferences, false, \
1894 1897 "Verify that all references across the FLS boundary " \
1895 1898 "are to valid objects") \
1896 1899 \
1897 1900 diagnostic(bool, FLSVerifyLists, false, \
1898 1901 "Do lots of (expensive) FreeListSpace verification") \
1899 1902 \
1900 1903 diagnostic(bool, FLSVerifyIndexTable, false, \
1901 1904 "Do lots of (expensive) FLS index table verification") \
1902 1905 \
1903 1906 develop(bool, FLSVerifyDictionary, false, \
1904 1907 "Do lots of (expensive) FLS dictionary verification") \
1905 1908 \
1906 1909 develop(bool, VerifyBlockOffsetArray, false, \
1907 1910 "Do (expensive) block offset array verification") \
1908 1911 \
1909 1912 diagnostic(bool, BlockOffsetArrayUseUnallocatedBlock, false, \
1910 1913 "Maintain _unallocated_block in BlockOffsetArray " \
1911 1914 "(currently applicable only to CMS collector)") \
1912 1915 \
1913 1916 develop(bool, TraceCMSState, false, \
1914 1917 "Trace the state of the CMS collection") \
1915 1918 \
1916 1919 product(intx, RefDiscoveryPolicy, 0, \
1917 1920 "Select type of reference discovery policy: " \
1918 1921 "reference-based(0) or referent-based(1)") \
1919 1922 \
1920 1923 product(bool, ParallelRefProcEnabled, false, \
1921 1924 "Enable parallel reference processing whenever possible") \
1922 1925 \
1923 1926 product(bool, ParallelRefProcBalancingEnabled, true, \
1924 1927 "Enable balancing of reference processing queues") \
1925 1928 \
1926 1929 product(uintx, CMSTriggerRatio, 80, \
1927 1930 "Percentage of MinHeapFreeRatio in CMS generation that is " \
1928 1931 "allocated before a CMS collection cycle commences") \
1929 1932 \
1930 1933 product(uintx, CMSBootstrapOccupancy, 50, \
1931 1934 "Percentage CMS generation occupancy at which to " \
1932 1935 "initiate CMS collection for bootstrapping collection stats") \
1933 1936 \
1934 1937 product(intx, CMSInitiatingOccupancyFraction, -1, \
1935 1938 "Percentage CMS generation occupancy to start a CMS collection " \
1936 1939 "cycle. A negative value means that CMSTriggerRatio is used") \
1937 1940 \
1938 1941 product(uintx, InitiatingHeapOccupancyPercent, 45, \
1939 1942 "Percentage of the (entire) heap occupancy to start a " \
1940 1943 "concurrent GC cycle. It is used by GCs that trigger a " \
1941 1944 "concurrent GC cycle based on the occupancy of the entire heap, " \
1942 1945 "not just one of the generations (e.g., G1). A value of 0 " \
1943 1946 "denotes 'do constant GC cycles'.") \
1944 1947 \
1945 1948 manageable(intx, CMSTriggerInterval, -1, \
1946 1949 "Commence a CMS collection cycle (at least) every so many " \
1947 1950 "milliseconds (0 permanently, -1 disabled)") \
1948 1951 \
1949 1952 product(bool, UseCMSInitiatingOccupancyOnly, false, \
1950 1953 "Only use occupancy as a criterion for starting a CMS collection")\
1951 1954 \
1952 1955 product(uintx, CMSIsTooFullPercentage, 98, \
1953 1956 "An absolute ceiling above which CMS will always consider the " \
1954 1957 "unloading of classes when class unloading is enabled") \
1955 1958 \
1956 1959 develop(bool, CMSTestInFreeList, false, \
1957 1960 "Check if the coalesced range is already in the " \
1958 1961 "free lists as claimed") \
1959 1962 \
1960 1963 notproduct(bool, CMSVerifyReturnedBytes, false, \
1961 1964 "Check that all the garbage collected was returned to the " \
1962 1965 "free lists") \
1963 1966 \
1964 1967 notproduct(bool, ScavengeALot, false, \
1965 1968 "Force scavenge at every Nth exit from the runtime system " \
1966 1969 "(N=ScavengeALotInterval)") \
1967 1970 \
1968 1971 develop(bool, FullGCALot, false, \
1969 1972 "Force full gc at every Nth exit from the runtime system " \
1970 1973 "(N=FullGCALotInterval)") \
1971 1974 \
1972 1975 notproduct(bool, GCALotAtAllSafepoints, false, \
1973 1976 "Enforce ScavengeALot/GCALot at all potential safepoints") \
1974 1977 \
1975 1978 product(bool, PrintPromotionFailure, false, \
1976 1979 "Print additional diagnostic information following " \
1977 1980 "promotion failure") \
1978 1981 \
1979 1982 notproduct(bool, PromotionFailureALot, false, \
1980 1983 "Use promotion failure handling on every youngest generation " \
1981 1984 "collection") \
1982 1985 \
1983 1986 develop(uintx, PromotionFailureALotCount, 1000, \
1984 1987 "Number of promotion failures occurring at ParGCAllocBuffer " \
1985 1988 "refill attempts (ParNew) or promotion attempts " \
1986 1989 "(other young collectors)") \
1987 1990 \
1988 1991 develop(uintx, PromotionFailureALotInterval, 5, \
1989 1992 "Total collections between promotion failures alot") \
1990 1993 \
1991 1994 experimental(uintx, WorkStealingSleepMillis, 1, \
1992 1995 "Sleep time when sleep is used for yields") \
1993 1996 \
1994 1997 experimental(uintx, WorkStealingYieldsBeforeSleep, 5000, \
1995 1998 "Number of yields before a sleep is done during workstealing") \
1996 1999 \
1997 2000 experimental(uintx, WorkStealingHardSpins, 4096, \
1998 2001 "Number of iterations in a spin loop between checks on " \
1999 2002 "time out of hard spin") \
2000 2003 \
2001 2004 experimental(uintx, WorkStealingSpinToYieldRatio, 10, \
2002 2005 "Ratio of hard spins to calls to yield") \
2003 2006 \
2004 2007 develop(uintx, ObjArrayMarkingStride, 512, \
2005 2008 "Number of object array elements to push onto the marking stack " \
2006 2009 "before pushing a continuation entry") \
2007 2010 \
2008 2011 develop(bool, MetadataAllocationFailALot, false, \
2009 2012 "Fail metadata allocations at intervals controlled by " \
2010 2013 "MetadataAllocationFailALotInterval") \
2011 2014 \
2012 2015 develop(uintx, MetadataAllocationFailALotInterval, 1000, \
2013 2016 "Metadata allocation failure a lot interval") \
2014 2017 \
2015 2018 develop(bool, TraceMetadataChunkAllocation, false, \
2016 2019 "Trace chunk metadata allocations") \
2017 2020 \
2018 2021 product(bool, TraceMetadataHumongousAllocation, false, \
2019 2022 "Trace humongous metadata allocations") \
2020 2023 \
2021 2024 develop(bool, TraceMetavirtualspaceAllocation, false, \
2022 2025 "Trace virtual space metadata allocations") \
2023 2026 \
2024 2027 notproduct(bool, ExecuteInternalVMTests, false, \
2025 2028 "Enable execution of internal VM tests") \
2026 2029 \
2027 2030 notproduct(bool, VerboseInternalVMTests, false, \
2028 2031 "Turn on logging for internal VM tests.") \
2029 2032 \
2030 2033 product_pd(bool, UseTLAB, "Use thread-local object allocation") \
2031 2034 \
2032 2035 product_pd(bool, ResizeTLAB, \
2033 2036 "Dynamically resize TLAB size for threads") \
2034 2037 \
2035 2038 product(bool, ZeroTLAB, false, \
2036 2039 "Zero out the newly created TLAB") \
2037 2040 \
2038 2041 product(bool, FastTLABRefill, true, \
2039 2042 "Use fast TLAB refill code") \
2040 2043 \
2041 2044 product(bool, PrintTLAB, false, \
2042 2045 "Print various TLAB related information") \
2043 2046 \
2044 2047 product(bool, TLABStats, true, \
2045 2048 "Provide more detailed and expensive TLAB statistics " \
2046 2049 "(with PrintTLAB)") \
2047 2050 \
2048 2051 EMBEDDED_ONLY(product(bool, LowMemoryProtection, true, \
2049 2052 "Enable LowMemoryProtection")) \
2050 2053 \
2051 2054 product_pd(bool, NeverActAsServerClassMachine, \
2052 2055 "Never act like a server-class machine") \
2053 2056 \
2054 2057 product(bool, AlwaysActAsServerClassMachine, false, \
2055 2058 "Always act like a server-class machine") \
2056 2059 \
2057 2060 product_pd(uint64_t, MaxRAM, \
2058 2061 "Real memory size (in bytes) used to set maximum heap size") \
2059 2062 \
2060 2063 product(uintx, ErgoHeapSizeLimit, 0, \
2061 2064 "Maximum ergonomically set heap size (in bytes); zero means use " \
2062 2065 "MaxRAM / MaxRAMFraction") \
2063 2066 \
2064 2067 product(uintx, MaxRAMFraction, 4, \
2065 2068 "Maximum fraction (1/n) of real memory used for maximum heap " \
2066 2069 "size") \
2067 2070 \
2068 2071 product(uintx, DefaultMaxRAMFraction, 4, \
2069 2072 "Maximum fraction (1/n) of real memory used for maximum heap " \
2070 2073 "size; deprecated: to be renamed to MaxRAMFraction") \
2071 2074 \
2072 2075 product(uintx, MinRAMFraction, 2, \
2073 2076 "Minimum fraction (1/n) of real memory used for maxmimum heap " \
2074 2077 "size on systems with small physical memory size") \
2075 2078 \
2076 2079 product(uintx, InitialRAMFraction, 64, \
2077 2080 "Fraction (1/n) of real memory used for initial heap size") \
2078 2081 \
2079 2082 develop(uintx, MaxVirtMemFraction, 2, \
2080 2083 "Maximum fraction (1/n) of virtual memory used for ergonomically "\
2081 2084 "determining maximum heap size") \
2082 2085 \
2083 2086 product(bool, UseAutoGCSelectPolicy, false, \
2084 2087 "Use automatic collection selection policy") \
2085 2088 \
2086 2089 product(uintx, AutoGCSelectPauseMillis, 5000, \
2087 2090 "Automatic GC selection pause threshold in milliseconds") \
2088 2091 \
2089 2092 product(bool, UseAdaptiveSizePolicy, true, \
2090 2093 "Use adaptive generation sizing policies") \
2091 2094 \
2092 2095 product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \
2093 2096 "Use adaptive survivor sizing policies") \
2094 2097 \
2095 2098 product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \
2096 2099 "Use adaptive young-old sizing policies at minor collections") \
2097 2100 \
2098 2101 product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \
2099 2102 "Use adaptive young-old sizing policies at major collections") \
2100 2103 \
2101 2104 product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \
2102 2105 "Include statistics from System.gc() for adaptive size policy") \
2103 2106 \
2104 2107 product(bool, UseAdaptiveGCBoundary, false, \
2105 2108 "Allow young-old boundary to move") \
2106 2109 \
2107 2110 develop(bool, TraceAdaptiveGCBoundary, false, \
2108 2111 "Trace young-old boundary moves") \
2109 2112 \
2110 2113 develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \
2111 2114 "Resize the virtual spaces of the young or old generations") \
2112 2115 \
2113 2116 product(uintx, AdaptiveSizeThroughPutPolicy, 0, \
2114 2117 "Policy for changing generation size for throughput goals") \
2115 2118 \
2116 2119 product(uintx, AdaptiveSizePausePolicy, 0, \
2117 2120 "Policy for changing generation size for pause goals") \
2118 2121 \
2119 2122 develop(bool, PSAdjustTenuredGenForMinorPause, false, \
2120 2123 "Adjust tenured generation to achieve a minor pause goal") \
2121 2124 \
2122 2125 develop(bool, PSAdjustYoungGenForMajorPause, false, \
2123 2126 "Adjust young generation to achieve a major pause goal") \
2124 2127 \
2125 2128 product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \
2126 2129 "Number of steps where heuristics is used before data is used") \
2127 2130 \
2128 2131 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \
2129 2132 "Number of collections before the adaptive sizing is started") \
2130 2133 \
2131 2134 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \
2132 2135 "Collection interval for printing information; zero means never") \
2133 2136 \
2134 2137 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \
2135 2138 "Use adaptive minimum footprint as a goal") \
2136 2139 \
2137 2140 product(uintx, AdaptiveSizePolicyWeight, 10, \
2138 2141 "Weight given to exponential resizing, between 0 and 100") \
2139 2142 \
2140 2143 product(uintx, AdaptiveTimeWeight, 25, \
2141 2144 "Weight given to time in adaptive policy, between 0 and 100") \
2142 2145 \
2143 2146 product(uintx, PausePadding, 1, \
2144 2147 "How much buffer to keep for pause time") \
2145 2148 \
2146 2149 product(uintx, PromotedPadding, 3, \
2147 2150 "How much buffer to keep for promotion failure") \
2148 2151 \
2149 2152 product(uintx, SurvivorPadding, 3, \
2150 2153 "How much buffer to keep for survivor overflow") \
2151 2154 \
2152 2155 product(uintx, ThresholdTolerance, 10, \
2153 2156 "Allowed collection cost difference between generations") \
2154 2157 \
2155 2158 product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \
2156 2159 "If collection costs are within margin, reduce both by full " \
2157 2160 "delta") \
2158 2161 \
2159 2162 product(uintx, YoungGenerationSizeIncrement, 20, \
2160 2163 "Adaptive size percentage change in young generation") \
2161 2164 \
2162 2165 product(uintx, YoungGenerationSizeSupplement, 80, \
2163 2166 "Supplement to YoungedGenerationSizeIncrement used at startup") \
2164 2167 \
2165 2168 product(uintx, YoungGenerationSizeSupplementDecay, 8, \
2166 2169 "Decay factor to YoungedGenerationSizeSupplement") \
2167 2170 \
2168 2171 product(uintx, TenuredGenerationSizeIncrement, 20, \
2169 2172 "Adaptive size percentage change in tenured generation") \
2170 2173 \
2171 2174 product(uintx, TenuredGenerationSizeSupplement, 80, \
2172 2175 "Supplement to TenuredGenerationSizeIncrement used at startup") \
2173 2176 \
2174 2177 product(uintx, TenuredGenerationSizeSupplementDecay, 2, \
2175 2178 "Decay factor to TenuredGenerationSizeIncrement") \
2176 2179 \
2177 2180 product(uintx, MaxGCPauseMillis, max_uintx, \
2178 2181 "Adaptive size policy maximum GC pause time goal in millisecond, "\
2179 2182 "or (G1 Only) the maximum GC time per MMU time slice") \
2180 2183 \
2181 2184 product(uintx, GCPauseIntervalMillis, 0, \
2182 2185 "Time slice for MMU specification") \
2183 2186 \
2184 2187 product(uintx, MaxGCMinorPauseMillis, max_uintx, \
2185 2188 "Adaptive size policy maximum GC minor pause time goal " \
2186 2189 "in millisecond") \
2187 2190 \
2188 2191 product(uintx, GCTimeRatio, 99, \
2189 2192 "Adaptive size policy application time to GC time ratio") \
2190 2193 \
2191 2194 product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \
2192 2195 "Adaptive size scale down factor for shrinking") \
2193 2196 \
2194 2197 product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \
2195 2198 "Adaptive size decays the major cost for long major intervals") \
2196 2199 \
2197 2200 product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \
2198 2201 "Time scale over which major costs decay") \
2199 2202 \
2200 2203 product(uintx, MinSurvivorRatio, 3, \
2201 2204 "Minimum ratio of young generation/survivor space size") \
2202 2205 \
2203 2206 product(uintx, InitialSurvivorRatio, 8, \
2204 2207 "Initial ratio of young generation/survivor space size") \
2205 2208 \
2206 2209 product(uintx, BaseFootPrintEstimate, 256*M, \
2207 2210 "Estimate of footprint other than Java Heap") \
2208 2211 \
2209 2212 product(bool, UseGCOverheadLimit, true, \
2210 2213 "Use policy to limit of proportion of time spent in GC " \
2211 2214 "before an OutOfMemory error is thrown") \
2212 2215 \
2213 2216 product(uintx, GCTimeLimit, 98, \
2214 2217 "Limit of the proportion of time spent in GC before " \
2215 2218 "an OutOfMemoryError is thrown (used with GCHeapFreeLimit)") \
2216 2219 \
2217 2220 product(uintx, GCHeapFreeLimit, 2, \
2218 2221 "Minimum percentage of free space after a full GC before an " \
2219 2222 "OutOfMemoryError is thrown (used with GCTimeLimit)") \
2220 2223 \
2221 2224 develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \
2222 2225 "Number of consecutive collections before gc time limit fires") \
2223 2226 \
2224 2227 product(bool, PrintAdaptiveSizePolicy, false, \
2225 2228 "Print information about AdaptiveSizePolicy") \
2226 2229 \
2227 2230 product(intx, PrefetchCopyIntervalInBytes, -1, \
2228 2231 "How far ahead to prefetch destination area (<= 0 means off)") \
2229 2232 \
2230 2233 product(intx, PrefetchScanIntervalInBytes, -1, \
2231 2234 "How far ahead to prefetch scan area (<= 0 means off)") \
2232 2235 \
2233 2236 product(intx, PrefetchFieldsAhead, -1, \
2234 2237 "How many fields ahead to prefetch in oop scan (<= 0 means off)") \
2235 2238 \
2236 2239 diagnostic(bool, VerifySilently, false, \
2237 2240 "Do not print the verification progress") \
2238 2241 \
2239 2242 diagnostic(bool, VerifyDuringStartup, false, \
2240 2243 "Verify memory system before executing any Java code " \
2241 2244 "during VM initialization") \
2242 2245 \
2243 2246 diagnostic(bool, VerifyBeforeExit, trueInDebug, \
2244 2247 "Verify system before exiting") \
2245 2248 \
2246 2249 diagnostic(bool, VerifyBeforeGC, false, \
2247 2250 "Verify memory system before GC") \
2248 2251 \
2249 2252 diagnostic(bool, VerifyAfterGC, false, \
2250 2253 "Verify memory system after GC") \
2251 2254 \
2252 2255 diagnostic(bool, VerifyDuringGC, false, \
2253 2256 "Verify memory system during GC (between phases)") \
2254 2257 \
2255 2258 diagnostic(bool, GCParallelVerificationEnabled, true, \
2256 2259 "Enable parallel memory system verification") \
2257 2260 \
2258 2261 diagnostic(bool, DeferInitialCardMark, false, \
2259 2262 "When +ReduceInitialCardMarks, explicitly defer any that " \
2260 2263 "may arise from new_pre_store_barrier") \
2261 2264 \
2262 2265 diagnostic(bool, VerifyRememberedSets, false, \
2263 2266 "Verify GC remembered sets") \
2264 2267 \
2265 2268 diagnostic(bool, VerifyObjectStartArray, true, \
2266 2269 "Verify GC object start array if verify before/after") \
2267 2270 \
2268 2271 product(bool, DisableExplicitGC, false, \
2269 2272 "Ignore calls to System.gc()") \
2270 2273 \
2271 2274 notproduct(bool, CheckMemoryInitialization, false, \
2272 2275 "Check memory initialization") \
2273 2276 \
2274 2277 product(bool, CollectGen0First, false, \
2275 2278 "Collect youngest generation before each full GC") \
2276 2279 \
2277 2280 diagnostic(bool, BindCMSThreadToCPU, false, \
2278 2281 "Bind CMS Thread to CPU if possible") \
2279 2282 \
2280 2283 diagnostic(uintx, CPUForCMSThread, 0, \
2281 2284 "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \
2282 2285 \
2283 2286 product(bool, BindGCTaskThreadsToCPUs, false, \
2284 2287 "Bind GCTaskThreads to CPUs if possible") \
2285 2288 \
2286 2289 product(bool, UseGCTaskAffinity, false, \
2287 2290 "Use worker affinity when asking for GCTasks") \
2288 2291 \
2289 2292 product(uintx, ProcessDistributionStride, 4, \
2290 2293 "Stride through processors when distributing processes") \
2291 2294 \
2292 2295 product(uintx, CMSCoordinatorYieldSleepCount, 10, \
2293 2296 "Number of times the coordinator GC thread will sleep while " \
2294 2297 "yielding before giving up and resuming GC") \
2295 2298 \
2296 2299 product(uintx, CMSYieldSleepCount, 0, \
2297 2300 "Number of times a GC thread (minus the coordinator) " \
2298 2301 "will sleep while yielding before giving up and resuming GC") \
2299 2302 \
2300 2303 /* gc tracing */ \
2301 2304 manageable(bool, PrintGC, false, \
2302 2305 "Print message at garbage collection") \
2303 2306 \
2304 2307 manageable(bool, PrintGCDetails, false, \
2305 2308 "Print more details at garbage collection") \
2306 2309 \
2307 2310 manageable(bool, PrintGCDateStamps, false, \
2308 2311 "Print date stamps at garbage collection") \
2309 2312 \
2310 2313 manageable(bool, PrintGCTimeStamps, false, \
2311 2314 "Print timestamps at garbage collection") \
2312 2315 \
2313 2316 manageable(bool, PrintGCID, false, \
2314 2317 "Print an identifier for each garbage collection") \
2315 2318 \
2316 2319 product(bool, PrintGCTaskTimeStamps, false, \
2317 2320 "Print timestamps for individual gc worker thread tasks") \
2318 2321 \
2319 2322 develop(intx, ConcGCYieldTimeout, 0, \
2320 2323 "If non-zero, assert that GC threads yield within this " \
2321 2324 "number of milliseconds") \
2322 2325 \
2323 2326 notproduct(bool, TraceMarkSweep, false, \
2324 2327 "Trace mark sweep") \
2325 2328 \
2326 2329 product(bool, PrintReferenceGC, false, \
2327 2330 "Print times spent handling reference objects during GC " \
2328 2331 "(enabled only when PrintGCDetails)") \
2329 2332 \
2330 2333 develop(bool, TraceReferenceGC, false, \
2331 2334 "Trace handling of soft/weak/final/phantom references") \
2332 2335 \
2333 2336 develop(bool, TraceFinalizerRegistration, false, \
2334 2337 "Trace registration of final references") \
2335 2338 \
2336 2339 notproduct(bool, TraceScavenge, false, \
2337 2340 "Trace scavenge") \
2338 2341 \
2339 2342 product(bool, IgnoreEmptyClassPaths, false, \
2340 2343 "Ignore empty path elements in -classpath") \
2341 2344 \
2342 2345 product(bool, TraceClassPaths, false, \
2343 2346 "Trace processing of class paths") \
2344 2347 \
2345 2348 product_rw(bool, TraceClassLoading, false, \
2346 2349 "Trace all classes loaded") \
2347 2350 \
2348 2351 product(bool, TraceClassLoadingPreorder, false, \
2349 2352 "Trace all classes loaded in order referenced (not loaded)") \
2350 2353 \
2351 2354 product_rw(bool, TraceClassUnloading, false, \
2352 2355 "Trace unloading of classes") \
2353 2356 \
2354 2357 product_rw(bool, TraceLoaderConstraints, false, \
2355 2358 "Trace loader constraints") \
2356 2359 \
2357 2360 develop(bool, TraceClassLoaderData, false, \
2358 2361 "Trace class loader loader_data lifetime") \
2359 2362 \
2360 2363 product(uintx, InitialBootClassLoaderMetaspaceSize, \
2361 2364 NOT_LP64(2200*K) LP64_ONLY(4*M), \
2362 2365 "Initial size of the boot class loader data metaspace") \
2363 2366 \
2364 2367 product(bool, TraceGen0Time, false, \
2365 2368 "Trace accumulated time for Gen 0 collection") \
2366 2369 \
2367 2370 product(bool, TraceGen1Time, false, \
2368 2371 "Trace accumulated time for Gen 1 collection") \
2369 2372 \
2370 2373 product(bool, PrintTenuringDistribution, false, \
2371 2374 "Print tenuring age information") \
2372 2375 \
2373 2376 product_rw(bool, PrintHeapAtGC, false, \
2374 2377 "Print heap layout before and after each GC") \
2375 2378 \
2376 2379 product_rw(bool, PrintHeapAtGCExtended, false, \
2377 2380 "Print extended information about the layout of the heap " \
2378 2381 "when -XX:+PrintHeapAtGC is set") \
2379 2382 \
2380 2383 product(bool, PrintHeapAtSIGBREAK, true, \
2381 2384 "Print heap layout in response to SIGBREAK") \
2382 2385 \
2383 2386 manageable(bool, PrintClassHistogramBeforeFullGC, false, \
2384 2387 "Print a class histogram before any major stop-world GC") \
2385 2388 \
2386 2389 manageable(bool, PrintClassHistogramAfterFullGC, false, \
2387 2390 "Print a class histogram after any major stop-world GC") \
2388 2391 \
2389 2392 manageable(bool, PrintClassHistogram, false, \
2390 2393 "Print a histogram of class instances") \
2391 2394 \
2392 2395 develop(bool, TraceWorkGang, false, \
2393 2396 "Trace activities of work gangs") \
2394 2397 \
2395 2398 product(bool, TraceParallelOldGCTasks, false, \
2396 2399 "Trace multithreaded GC activity") \
2397 2400 \
2398 2401 develop(bool, TraceBlockOffsetTable, false, \
2399 2402 "Print BlockOffsetTable maps") \
2400 2403 \
2401 2404 develop(bool, TraceCardTableModRefBS, false, \
2402 2405 "Print CardTableModRefBS maps") \
2403 2406 \
2404 2407 develop(bool, TraceGCTaskManager, false, \
2405 2408 "Trace actions of the GC task manager") \
2406 2409 \
2407 2410 develop(bool, TraceGCTaskQueue, false, \
2408 2411 "Trace actions of the GC task queues") \
2409 2412 \
2410 2413 diagnostic(bool, TraceGCTaskThread, false, \
2411 2414 "Trace actions of the GC task threads") \
2412 2415 \
2413 2416 product(bool, PrintParallelOldGCPhaseTimes, false, \
2414 2417 "Print the time taken by each phase in ParallelOldGC " \
2415 2418 "(PrintGCDetails must also be enabled)") \
2416 2419 \
2417 2420 develop(bool, TraceParallelOldGCMarkingPhase, false, \
2418 2421 "Trace marking phase in ParallelOldGC") \
2419 2422 \
2420 2423 develop(bool, TraceParallelOldGCSummaryPhase, false, \
2421 2424 "Trace summary phase in ParallelOldGC") \
2422 2425 \
2423 2426 develop(bool, TraceParallelOldGCCompactionPhase, false, \
2424 2427 "Trace compaction phase in ParallelOldGC") \
2425 2428 \
2426 2429 develop(bool, TraceParallelOldGCDensePrefix, false, \
2427 2430 "Trace dense prefix computation for ParallelOldGC") \
2428 2431 \
2429 2432 develop(bool, IgnoreLibthreadGPFault, false, \
2430 2433 "Suppress workaround for libthread GP fault") \
2431 2434 \
2432 2435 product(bool, PrintJNIGCStalls, false, \
2433 2436 "Print diagnostic message when GC is stalled " \
2434 2437 "by JNI critical section") \
2435 2438 \
2436 2439 experimental(double, ObjectCountCutOffPercent, 0.5, \
2437 2440 "The percentage of the used heap that the instances of a class " \
2438 2441 "must occupy for the class to generate a trace event") \
2439 2442 \
2440 2443 /* GC log rotation setting */ \
2441 2444 \
2442 2445 product(bool, UseGCLogFileRotation, false, \
2443 2446 "Rotate gclog files (for long running applications). It requires "\
2444 2447 "-Xloggc:<filename>") \
2445 2448 \
2446 2449 product(uintx, NumberOfGCLogFiles, 0, \
2447 2450 "Number of gclog files in rotation " \
2448 2451 "(default: 0, no rotation)") \
2449 2452 \
2450 2453 product(uintx, GCLogFileSize, 8*K, \
2451 2454 "GC log file size, requires UseGCLogFileRotation. " \
2452 2455 "Set to 0 to only trigger rotation via jcmd") \
2453 2456 \
2454 2457 /* JVMTI heap profiling */ \
2455 2458 \
2456 2459 diagnostic(bool, TraceJVMTIObjectTagging, false, \
2457 2460 "Trace JVMTI object tagging calls") \
2458 2461 \
2459 2462 diagnostic(bool, VerifyBeforeIteration, false, \
2460 2463 "Verify memory system before JVMTI iteration") \
2461 2464 \
2462 2465 /* compiler interface */ \
2463 2466 \
2464 2467 develop(bool, CIPrintCompilerName, false, \
2465 2468 "when CIPrint is active, print the name of the active compiler") \
2466 2469 \
2467 2470 develop(bool, CIPrintCompileQueue, false, \
2468 2471 "display the contents of the compile queue whenever a " \
2469 2472 "compilation is enqueued") \
2470 2473 \
2471 2474 develop(bool, CIPrintRequests, false, \
2472 2475 "display every request for compilation") \
2473 2476 \
2474 2477 product(bool, CITime, false, \
2475 2478 "collect timing information for compilation") \
2476 2479 \
2477 2480 develop(bool, CITimeEach, false, \
2478 2481 "display timing information after each successful compilation") \
2479 2482 \
2480 2483 develop(bool, CICountOSR, false, \
2481 2484 "use a separate counter when assigning ids to osr compilations") \
2482 2485 \
2483 2486 develop(bool, CICompileNatives, true, \
2484 2487 "compile native methods if supported by the compiler") \
2485 2488 \
2486 2489 develop_pd(bool, CICompileOSR, \
2487 2490 "compile on stack replacement methods if supported by the " \
2488 2491 "compiler") \
2489 2492 \
2490 2493 develop(bool, CIPrintMethodCodes, false, \
2491 2494 "print method bytecodes of the compiled code") \
2492 2495 \
2493 2496 develop(bool, CIPrintTypeFlow, false, \
2494 2497 "print the results of ciTypeFlow analysis") \
2495 2498 \
2496 2499 develop(bool, CITraceTypeFlow, false, \
2497 2500 "detailed per-bytecode tracing of ciTypeFlow analysis") \
2498 2501 \
2499 2502 develop(intx, OSROnlyBCI, -1, \
2500 2503 "OSR only at this bci. Negative values mean exclude that bci") \
2501 2504 \
2502 2505 /* compiler */ \
2503 2506 \
2504 2507 product(intx, CICompilerCount, CI_COMPILER_COUNT, \
2505 2508 "Number of compiler threads to run") \
2506 2509 \
2507 2510 product(intx, CompilationPolicyChoice, 0, \
2508 2511 "which compilation policy (0/1)") \
2509 2512 \
2510 2513 develop(bool, UseStackBanging, true, \
2511 2514 "use stack banging for stack overflow checks (required for " \
2512 2515 "proper StackOverflow handling; disable only to measure cost " \
2513 2516 "of stackbanging)") \
2514 2517 \
2515 2518 develop(bool, UseStrictFP, true, \
2516 2519 "use strict fp if modifier strictfp is set") \
2517 2520 \
2518 2521 develop(bool, GenerateSynchronizationCode, true, \
2519 2522 "generate locking/unlocking code for synchronized methods and " \
2520 2523 "monitors") \
2521 2524 \
2522 2525 develop(bool, GenerateCompilerNullChecks, true, \
2523 2526 "Generate explicit null checks for loads/stores/calls") \
2524 2527 \
2525 2528 develop(bool, GenerateRangeChecks, true, \
2526 2529 "Generate range checks for array accesses") \
2527 2530 \
2528 2531 develop_pd(bool, ImplicitNullChecks, \
2529 2532 "Generate code for implicit null checks") \
2530 2533 \
2531 2534 product_pd(bool, TrapBasedNullChecks, \
2532 2535 "Generate code for null checks that uses a cmp and trap " \
2533 2536 "instruction raising SIGTRAP. This is only used if an access to" \
2534 2537 "null (+offset) will not raise a SIGSEGV, i.e.," \
2535 2538 "ImplicitNullChecks don't work (PPC64).") \
2536 2539 \
2537 2540 product(bool, PrintSafepointStatistics, false, \
2538 2541 "Print statistics about safepoint synchronization") \
2539 2542 \
2540 2543 product(intx, PrintSafepointStatisticsCount, 300, \
2541 2544 "Total number of safepoint statistics collected " \
2542 2545 "before printing them out") \
2543 2546 \
2544 2547 product(intx, PrintSafepointStatisticsTimeout, -1, \
2545 2548 "Print safepoint statistics only when safepoint takes " \
2546 2549 "more than PrintSafepointSatisticsTimeout in millis") \
2547 2550 \
2548 2551 product(bool, TraceSafepointCleanupTime, false, \
2549 2552 "Print the break down of clean up tasks performed during " \
2550 2553 "safepoint") \
2551 2554 \
2552 2555 product(bool, Inline, true, \
2553 2556 "Enable inlining") \
2554 2557 \
2555 2558 product(bool, ClipInlining, true, \
2556 2559 "Clip inlining if aggregate method exceeds DesiredMethodLimit") \
2557 2560 \
2558 2561 develop(bool, UseCHA, true, \
2559 2562 "Enable CHA") \
2560 2563 \
2561 2564 product(bool, UseTypeProfile, true, \
2562 2565 "Check interpreter profile for historically monomorphic calls") \
2563 2566 \
2564 2567 notproduct(bool, TimeCompiler, false, \
2565 2568 "Time the compiler") \
2566 2569 \
2567 2570 diagnostic(bool, PrintInlining, false, \
2568 2571 "Print inlining optimizations") \
2569 2572 \
2570 2573 product(bool, UsePopCountInstruction, false, \
2571 2574 "Use population count instruction") \
2572 2575 \
2573 2576 develop(bool, EagerInitialization, false, \
2574 2577 "Eagerly initialize classes if possible") \
2575 2578 \
2576 2579 develop(bool, TraceMethodReplacement, false, \
2577 2580 "Print when methods are replaced do to recompilation") \
2578 2581 \
2579 2582 develop(bool, PrintMethodFlushing, false, \
2580 2583 "Print the nmethods being flushed") \
2581 2584 \
2582 2585 diagnostic(bool, PrintMethodFlushingStatistics, false, \
2583 2586 "print statistics about method flushing") \
2584 2587 \
2585 2588 develop(bool, UseRelocIndex, false, \
2586 2589 "Use an index to speed random access to relocations") \
2587 2590 \
2588 2591 develop(bool, StressCodeBuffers, false, \
2589 2592 "Exercise code buffer expansion and other rare state changes") \
2590 2593 \
2591 2594 diagnostic(bool, DebugNonSafepoints, trueInDebug, \
2592 2595 "Generate extra debugging information for non-safepoints in " \
2593 2596 "nmethods") \
2594 2597 \
2595 2598 product(bool, PrintVMOptions, false, \
2596 2599 "Print flags that appeared on the command line") \
2597 2600 \
2598 2601 product(bool, IgnoreUnrecognizedVMOptions, false, \
2599 2602 "Ignore unrecognized VM options") \
2600 2603 \
2601 2604 product(bool, PrintCommandLineFlags, false, \
2602 2605 "Print flags specified on command line or set by ergonomics") \
2603 2606 \
2604 2607 product(bool, PrintFlagsInitial, false, \
2605 2608 "Print all VM flags before argument processing and exit VM") \
2606 2609 \
2607 2610 product(bool, PrintFlagsFinal, false, \
2608 2611 "Print all VM flags after argument and ergonomic processing") \
2609 2612 \
2610 2613 notproduct(bool, PrintFlagsWithComments, false, \
2611 2614 "Print all VM flags with default values and descriptions and " \
2612 2615 "exit") \
2613 2616 \
2614 2617 diagnostic(bool, SerializeVMOutput, true, \
2615 2618 "Use a mutex to serialize output to tty and LogFile") \
2616 2619 \
2617 2620 diagnostic(bool, DisplayVMOutput, true, \
2618 2621 "Display all VM output on the tty, independently of LogVMOutput") \
2619 2622 \
2620 2623 diagnostic(bool, LogVMOutput, false, \
2621 2624 "Save VM output to LogFile") \
2622 2625 \
2623 2626 diagnostic(ccstr, LogFile, NULL, \
2624 2627 "If LogVMOutput or LogCompilation is on, save VM output to " \
2625 2628 "this file [default: ./hotspot_pid%p.log] (%p replaced with pid)")\
2626 2629 \
2627 2630 product(ccstr, ErrorFile, NULL, \
2628 2631 "If an error occurs, save the error data to this file " \
2629 2632 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \
2630 2633 \
2631 2634 product(bool, DisplayVMOutputToStderr, false, \
2632 2635 "If DisplayVMOutput is true, display all VM output to stderr") \
2633 2636 \
2634 2637 product(bool, DisplayVMOutputToStdout, false, \
2635 2638 "If DisplayVMOutput is true, display all VM output to stdout") \
2636 2639 \
2637 2640 product(bool, UseHeavyMonitors, false, \
2638 2641 "use heavyweight instead of lightweight Java monitors") \
2639 2642 \
2640 2643 product(bool, PrintStringTableStatistics, false, \
2641 2644 "print statistics about the StringTable and SymbolTable") \
2642 2645 \
2643 2646 diagnostic(bool, VerifyStringTableAtExit, false, \
2644 2647 "verify StringTable contents at exit") \
2645 2648 \
2646 2649 notproduct(bool, PrintSymbolTableSizeHistogram, false, \
2647 2650 "print histogram of the symbol table") \
2648 2651 \
2649 2652 notproduct(bool, ExitVMOnVerifyError, false, \
2650 2653 "standard exit from VM if bytecode verify error " \
2651 2654 "(only in debug mode)") \
2652 2655 \
2653 2656 notproduct(ccstr, AbortVMOnException, NULL, \
2654 2657 "Call fatal if this exception is thrown. Example: " \
2655 2658 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \
2656 2659 \
2657 2660 notproduct(ccstr, AbortVMOnExceptionMessage, NULL, \
2658 2661 "Call fatal if the exception pointed by AbortVMOnException " \
2659 2662 "has this message") \
2660 2663 \
2661 2664 develop(bool, DebugVtables, false, \
2662 2665 "add debugging code to vtable dispatch") \
2663 2666 \
2664 2667 develop(bool, PrintVtables, false, \
2665 2668 "print vtables when printing klass") \
2666 2669 \
2667 2670 notproduct(bool, PrintVtableStats, false, \
2668 2671 "print vtables stats at end of run") \
2669 2672 \
2670 2673 develop(bool, TraceCreateZombies, false, \
2671 2674 "trace creation of zombie nmethods") \
2672 2675 \
2673 2676 notproduct(bool, IgnoreLockingAssertions, false, \
2674 2677 "disable locking assertions (for speed)") \
2675 2678 \
2676 2679 product(bool, RangeCheckElimination, true, \
2677 2680 "Eliminate range checks") \
2678 2681 \
2679 2682 develop_pd(bool, UncommonNullCast, \
2680 2683 "track occurrences of null in casts; adjust compiler tactics") \
2681 2684 \
2682 2685 develop(bool, TypeProfileCasts, true, \
2683 2686 "treat casts like calls for purposes of type profiling") \
2684 2687 \
2685 2688 develop(bool, DelayCompilationDuringStartup, true, \
2686 2689 "Delay invoking the compiler until main application class is " \
2687 2690 "loaded") \
2688 2691 \
2689 2692 develop(bool, CompileTheWorld, false, \
2690 2693 "Compile all methods in all classes in bootstrap class path " \
2691 2694 "(stress test)") \
2692 2695 \
2693 2696 develop(bool, CompileTheWorldPreloadClasses, true, \
2694 2697 "Preload all classes used by a class before start loading") \
2695 2698 \
2696 2699 notproduct(intx, CompileTheWorldSafepointInterval, 100, \
2697 2700 "Force a safepoint every n compiles so sweeper can keep up") \
2698 2701 \
2699 2702 develop(bool, FillDelaySlots, true, \
2700 2703 "Fill delay slots (on SPARC only)") \
2701 2704 \
2702 2705 develop(bool, TimeLivenessAnalysis, false, \
2703 2706 "Time computation of bytecode liveness analysis") \
2704 2707 \
2705 2708 develop(bool, TraceLivenessGen, false, \
2706 2709 "Trace the generation of liveness analysis information") \
2707 2710 \
2708 2711 notproduct(bool, TraceLivenessQuery, false, \
2709 2712 "Trace queries of liveness analysis information") \
2710 2713 \
2711 2714 notproduct(bool, CollectIndexSetStatistics, false, \
2712 2715 "Collect information about IndexSets") \
2713 2716 \
2714 2717 develop(bool, UseLoopSafepoints, true, \
2715 2718 "Generate Safepoint nodes in every loop") \
2716 2719 \
2717 2720 develop(intx, FastAllocateSizeLimit, 128*K, \
2718 2721 /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \
2719 2722 "Inline allocations larger than this in doublewords must go slow")\
2720 2723 \
2721 2724 product(bool, AggressiveOpts, false, \
2722 2725 "Enable aggressive optimizations - see arguments.cpp") \
2723 2726 \
2724 2727 product_pd(uintx, TypeProfileLevel, \
2725 2728 "=XYZ, with Z: Type profiling of arguments at call; " \
2726 2729 "Y: Type profiling of return value at call; " \
2727 2730 "X: Type profiling of parameters to methods; " \
2728 2731 "X, Y and Z in 0=off ; 1=jsr292 only; 2=all methods") \
2729 2732 \
2730 2733 product(intx, TypeProfileArgsLimit, 2, \
2731 2734 "max number of call arguments to consider for type profiling") \
2732 2735 \
2733 2736 product(intx, TypeProfileParmsLimit, 2, \
2734 2737 "max number of incoming parameters to consider for type profiling"\
2735 2738 ", -1 for all") \
2736 2739 \
2737 2740 /* statistics */ \
2738 2741 develop(bool, CountCompiledCalls, false, \
2739 2742 "Count method invocations") \
2740 2743 \
2741 2744 notproduct(bool, CountRuntimeCalls, false, \
2742 2745 "Count VM runtime calls") \
2743 2746 \
2744 2747 develop(bool, CountJNICalls, false, \
2745 2748 "Count jni method invocations") \
2746 2749 \
2747 2750 notproduct(bool, CountJVMCalls, false, \
2748 2751 "Count jvm method invocations") \
2749 2752 \
2750 2753 notproduct(bool, CountRemovableExceptions, false, \
2751 2754 "Count exceptions that could be replaced by branches due to " \
2752 2755 "inlining") \
2753 2756 \
2754 2757 notproduct(bool, ICMissHistogram, false, \
2755 2758 "Produce histogram of IC misses") \
2756 2759 \
2757 2760 notproduct(bool, PrintClassStatistics, false, \
2758 2761 "Print class statistics at end of run") \
2759 2762 \
2760 2763 notproduct(bool, PrintMethodStatistics, false, \
2761 2764 "Print method statistics at end of run") \
2762 2765 \
2763 2766 /* interpreter */ \
2764 2767 develop(bool, ClearInterpreterLocals, false, \
2765 2768 "Always clear local variables of interpreter activations upon " \
2766 2769 "entry") \
2767 2770 \
2768 2771 product_pd(bool, RewriteBytecodes, \
2769 2772 "Allow rewriting of bytecodes (bytecodes are not immutable)") \
2770 2773 \
2771 2774 product_pd(bool, RewriteFrequentPairs, \
2772 2775 "Rewrite frequently used bytecode pairs into a single bytecode") \
2773 2776 \
2774 2777 diagnostic(bool, PrintInterpreter, false, \
2775 2778 "Print the generated interpreter code") \
2776 2779 \
2777 2780 product(bool, UseInterpreter, true, \
2778 2781 "Use interpreter for non-compiled methods") \
2779 2782 \
2780 2783 develop(bool, UseFastSignatureHandlers, true, \
2781 2784 "Use fast signature handlers for native calls") \
2782 2785 \
2783 2786 product(bool, UseLoopCounter, true, \
2784 2787 "Increment invocation counter on backward branch") \
2785 2788 \
2786 2789 product(bool, UseFastEmptyMethods, true, \
2787 2790 "Use fast method entry code for empty methods") \
2788 2791 \
2789 2792 product(bool, UseFastAccessorMethods, true, \
2790 2793 "Use fast method entry code for accessor methods") \
2791 2794 \
2792 2795 product_pd(bool, UseOnStackReplacement, \
2793 2796 "Use on stack replacement, calls runtime if invoc. counter " \
2794 2797 "overflows in loop") \
2795 2798 \
2796 2799 notproduct(bool, TraceOnStackReplacement, false, \
2797 2800 "Trace on stack replacement") \
2798 2801 \
2799 2802 product_pd(bool, PreferInterpreterNativeStubs, \
2800 2803 "Use always interpreter stubs for native methods invoked via " \
2801 2804 "interpreter") \
2802 2805 \
2803 2806 develop(bool, CountBytecodes, false, \
2804 2807 "Count number of bytecodes executed") \
2805 2808 \
2806 2809 develop(bool, PrintBytecodeHistogram, false, \
2807 2810 "Print histogram of the executed bytecodes") \
2808 2811 \
2809 2812 develop(bool, PrintBytecodePairHistogram, false, \
2810 2813 "Print histogram of the executed bytecode pairs") \
2811 2814 \
2812 2815 diagnostic(bool, PrintSignatureHandlers, false, \
2813 2816 "Print code generated for native method signature handlers") \
2814 2817 \
2815 2818 develop(bool, VerifyOops, false, \
2816 2819 "Do plausibility checks for oops") \
2817 2820 \
2818 2821 develop(bool, CheckUnhandledOops, false, \
2819 2822 "Check for unhandled oops in VM code") \
2820 2823 \
2821 2824 develop(bool, VerifyJNIFields, trueInDebug, \
2822 2825 "Verify jfieldIDs for instance fields") \
2823 2826 \
2824 2827 notproduct(bool, VerifyJNIEnvThread, false, \
2825 2828 "Verify JNIEnv.thread == Thread::current() when entering VM " \
2826 2829 "from JNI") \
2827 2830 \
2828 2831 develop(bool, VerifyFPU, false, \
2829 2832 "Verify FPU state (check for NaN's, etc.)") \
2830 2833 \
2831 2834 develop(bool, VerifyThread, false, \
2832 2835 "Watch the thread register for corruption (SPARC only)") \
2833 2836 \
2834 2837 develop(bool, VerifyActivationFrameSize, false, \
2835 2838 "Verify that activation frame didn't become smaller than its " \
2836 2839 "minimal size") \
2837 2840 \
2838 2841 develop(bool, TraceFrequencyInlining, false, \
2839 2842 "Trace frequency based inlining") \
2840 2843 \
2841 2844 develop_pd(bool, InlineIntrinsics, \
2842 2845 "Inline intrinsics that can be statically resolved") \
2843 2846 \
2844 2847 product_pd(bool, ProfileInterpreter, \
2845 2848 "Profile at the bytecode level during interpretation") \
2846 2849 \
2847 2850 develop(bool, TraceProfileInterpreter, false, \
2848 2851 "Trace profiling at the bytecode level during interpretation. " \
2849 2852 "This outputs the profiling information collected to improve " \
2850 2853 "jit compilation.") \
2851 2854 \
2852 2855 develop_pd(bool, ProfileTraps, \
2853 2856 "Profile deoptimization traps at the bytecode level") \
2854 2857 \
2855 2858 product(intx, ProfileMaturityPercentage, 20, \
2856 2859 "number of method invocations/branches (expressed as % of " \
2857 2860 "CompileThreshold) before using the method's profile") \
2858 2861 \
2859 2862 develop(bool, PrintMethodData, false, \
2860 2863 "Print the results of +ProfileInterpreter at end of run") \
2861 2864 \
2862 2865 develop(bool, VerifyDataPointer, trueInDebug, \
2863 2866 "Verify the method data pointer during interpreter profiling") \
2864 2867 \
2865 2868 develop(bool, VerifyCompiledCode, false, \
2866 2869 "Include miscellaneous runtime verifications in nmethod code; " \
2867 2870 "default off because it disturbs nmethod size heuristics") \
2868 2871 \
2869 2872 notproduct(bool, CrashGCForDumpingJavaThread, false, \
2870 2873 "Manually make GC thread crash then dump java stack trace; " \
2871 2874 "Test only") \
2872 2875 \
2873 2876 /* compilation */ \
2874 2877 product(bool, UseCompiler, true, \
2875 2878 "Use Just-In-Time compilation") \
2876 2879 \
2877 2880 develop(bool, TraceCompilationPolicy, false, \
2878 2881 "Trace compilation policy") \
2879 2882 \
2880 2883 develop(bool, TimeCompilationPolicy, false, \
2881 2884 "Time the compilation policy") \
2882 2885 \
2883 2886 product(bool, UseCounterDecay, true, \
2884 2887 "Adjust recompilation counters") \
2885 2888 \
2886 2889 develop(intx, CounterHalfLifeTime, 30, \
2887 2890 "Half-life time of invocation counters (in seconds)") \
2888 2891 \
2889 2892 develop(intx, CounterDecayMinIntervalLength, 500, \
2890 2893 "The minimum interval (in milliseconds) between invocation of " \
2891 2894 "CounterDecay") \
2892 2895 \
2893 2896 product(bool, AlwaysCompileLoopMethods, false, \
2894 2897 "When using recompilation, never interpret methods " \
2895 2898 "containing loops") \
2896 2899 \
2897 2900 product(bool, DontCompileHugeMethods, true, \
2898 2901 "Do not compile methods > HugeMethodLimit") \
2899 2902 \
2900 2903 /* Bytecode escape analysis estimation. */ \
2901 2904 product(bool, EstimateArgEscape, true, \
2902 2905 "Analyze bytecodes to estimate escape state of arguments") \
2903 2906 \
2904 2907 product(intx, BCEATraceLevel, 0, \
2905 2908 "How much tracing to do of bytecode escape analysis estimates") \
2906 2909 \
2907 2910 product(intx, MaxBCEAEstimateLevel, 5, \
2908 2911 "Maximum number of nested calls that are analyzed by BC EA") \
2909 2912 \
2910 2913 product(intx, MaxBCEAEstimateSize, 150, \
2911 2914 "Maximum bytecode size of a method to be analyzed by BC EA") \
2912 2915 \
2913 2916 product(intx, AllocatePrefetchStyle, 1, \
2914 2917 "0 = no prefetch, " \
2915 2918 "1 = prefetch instructions for each allocation, " \
2916 2919 "2 = use TLAB watermark to gate allocation prefetch, " \
2917 2920 "3 = use BIS instruction on Sparc for allocation prefetch") \
2918 2921 \
2919 2922 product(intx, AllocatePrefetchDistance, -1, \
2920 2923 "Distance to prefetch ahead of allocation pointer") \
2921 2924 \
2922 2925 product(intx, AllocatePrefetchLines, 3, \
2923 2926 "Number of lines to prefetch ahead of array allocation pointer") \
2924 2927 \
2925 2928 product(intx, AllocateInstancePrefetchLines, 1, \
2926 2929 "Number of lines to prefetch ahead of instance allocation " \
2927 2930 "pointer") \
2928 2931 \
2929 2932 product(intx, AllocatePrefetchStepSize, 16, \
2930 2933 "Step size in bytes of sequential prefetch instructions") \
2931 2934 \
2932 2935 product(intx, AllocatePrefetchInstr, 0, \
2933 2936 "Prefetch instruction to prefetch ahead of allocation pointer") \
2934 2937 \
2935 2938 /* deoptimization */ \
2936 2939 develop(bool, TraceDeoptimization, false, \
2937 2940 "Trace deoptimization") \
2938 2941 \
2939 2942 develop(bool, DebugDeoptimization, false, \
2940 2943 "Tracing various information while debugging deoptimization") \
2941 2944 \
2942 2945 product(intx, SelfDestructTimer, 0, \
2943 2946 "Will cause VM to terminate after a given time (in minutes) " \
2944 2947 "(0 means off)") \
2945 2948 \
2946 2949 product(intx, MaxJavaStackTraceDepth, 1024, \
2947 2950 "The maximum number of lines in the stack trace for Java " \
2948 2951 "exceptions (0 means all)") \
2949 2952 \
2950 2953 NOT_EMBEDDED(diagnostic(intx, GuaranteedSafepointInterval, 1000, \
2951 2954 "Guarantee a safepoint (at least) every so many milliseconds " \
2952 2955 "(0 means none)")) \
2953 2956 \
2954 2957 EMBEDDED_ONLY(product(intx, GuaranteedSafepointInterval, 0, \
2955 2958 "Guarantee a safepoint (at least) every so many milliseconds " \
2956 2959 "(0 means none)")) \
2957 2960 \
2958 2961 product(intx, SafepointTimeoutDelay, 10000, \
2959 2962 "Delay in milliseconds for option SafepointTimeout") \
2960 2963 \
2961 2964 product(intx, NmethodSweepFraction, 16, \
2962 2965 "Number of invocations of sweeper to cover all nmethods") \
2963 2966 \
2964 2967 product(intx, NmethodSweepCheckInterval, 5, \
2965 2968 "Compilers wake up every n seconds to possibly sweep nmethods") \
2966 2969 \
2967 2970 product(intx, NmethodSweepActivity, 10, \
2968 2971 "Removes cold nmethods from code cache if > 0. Higher values " \
2969 2972 "result in more aggressive sweeping") \
2970 2973 \
2971 2974 notproduct(bool, LogSweeper, false, \
2972 2975 "Keep a ring buffer of sweeper activity") \
2973 2976 \
2974 2977 notproduct(intx, SweeperLogEntries, 1024, \
2975 2978 "Number of records in the ring buffer of sweeper activity") \
2976 2979 \
2977 2980 notproduct(intx, MemProfilingInterval, 500, \
2978 2981 "Time between each invocation of the MemProfiler") \
2979 2982 \
2980 2983 develop(intx, MallocCatchPtr, -1, \
2981 2984 "Hit breakpoint when mallocing/freeing this pointer") \
2982 2985 \
2983 2986 notproduct(intx, AssertRepeat, 1, \
2984 2987 "number of times to evaluate expression in assert " \
2985 2988 "(to estimate overhead); only works with -DUSE_REPEATED_ASSERTS") \
2986 2989 \
2987 2990 notproduct(ccstrlist, SuppressErrorAt, "", \
2988 2991 "List of assertions (file:line) to muzzle") \
2989 2992 \
2990 2993 notproduct(uintx, HandleAllocationLimit, 1024, \
2991 2994 "Threshold for HandleMark allocation when +TraceHandleAllocation "\
2992 2995 "is used") \
2993 2996 \
2994 2997 develop(uintx, TotalHandleAllocationLimit, 1024, \
2995 2998 "Threshold for total handle allocation when " \
2996 2999 "+TraceHandleAllocation is used") \
2997 3000 \
2998 3001 develop(intx, StackPrintLimit, 100, \
2999 3002 "number of stack frames to print in VM-level stack dump") \
3000 3003 \
3001 3004 notproduct(intx, MaxElementPrintSize, 256, \
3002 3005 "maximum number of elements to print") \
3003 3006 \
3004 3007 notproduct(intx, MaxSubklassPrintSize, 4, \
3005 3008 "maximum number of subklasses to print when printing klass") \
3006 3009 \
3007 3010 product(intx, MaxInlineLevel, 9, \
3008 3011 "maximum number of nested calls that are inlined") \
3009 3012 \
3010 3013 product(intx, MaxRecursiveInlineLevel, 1, \
3011 3014 "maximum number of nested recursive calls that are inlined") \
3012 3015 \
3013 3016 develop(intx, MaxForceInlineLevel, 100, \
3014 3017 "maximum number of nested calls that are forced for inlining " \
3015 3018 "(using CompilerOracle or marked w/ @ForceInline)") \
3016 3019 \
3017 3020 product_pd(intx, InlineSmallCode, \
3018 3021 "Only inline already compiled methods if their code size is " \
3019 3022 "less than this") \
3020 3023 \
3021 3024 product(intx, MaxInlineSize, 35, \
3022 3025 "The maximum bytecode size of a method to be inlined") \
3023 3026 \
3024 3027 product_pd(intx, FreqInlineSize, \
3025 3028 "The maximum bytecode size of a frequent method to be inlined") \
3026 3029 \
3027 3030 product(intx, MaxTrivialSize, 6, \
3028 3031 "The maximum bytecode size of a trivial method to be inlined") \
3029 3032 \
3030 3033 product(intx, MinInliningThreshold, 250, \
3031 3034 "The minimum invocation count a method needs to have to be " \
3032 3035 "inlined") \
3033 3036 \
3034 3037 develop(intx, MethodHistogramCutoff, 100, \
3035 3038 "The cutoff value for method invocation histogram (+CountCalls)") \
3036 3039 \
3037 3040 develop(intx, ProfilerNumberOfInterpretedMethods, 25, \
3038 3041 "Number of interpreted methods to show in profile") \
3039 3042 \
3040 3043 develop(intx, ProfilerNumberOfCompiledMethods, 25, \
3041 3044 "Number of compiled methods to show in profile") \
3042 3045 \
3043 3046 develop(intx, ProfilerNumberOfStubMethods, 25, \
3044 3047 "Number of stub methods to show in profile") \
3045 3048 \
3046 3049 develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \
3047 3050 "Number of runtime stub nodes to show in profile") \
3048 3051 \
3049 3052 product(intx, ProfileIntervalsTicks, 100, \
3050 3053 "Number of ticks between printing of interval profile " \
3051 3054 "(+ProfileIntervals)") \
3052 3055 \
3053 3056 notproduct(intx, ScavengeALotInterval, 1, \
3054 3057 "Interval between which scavenge will occur with +ScavengeALot") \
3055 3058 \
3056 3059 notproduct(intx, FullGCALotInterval, 1, \
3057 3060 "Interval between which full gc will occur with +FullGCALot") \
3058 3061 \
3059 3062 notproduct(intx, FullGCALotStart, 0, \
3060 3063 "For which invocation to start FullGCAlot") \
3061 3064 \
3062 3065 notproduct(intx, FullGCALotDummies, 32*K, \
3063 3066 "Dummy object allocated with +FullGCALot, forcing all objects " \
3064 3067 "to move") \
3065 3068 \
3066 3069 develop(intx, DontYieldALotInterval, 10, \
3067 3070 "Interval between which yields will be dropped (milliseconds)") \
3068 3071 \
3069 3072 develop(intx, MinSleepInterval, 1, \
3070 3073 "Minimum sleep() interval (milliseconds) when " \
3071 3074 "ConvertSleepToYield is off (used for Solaris)") \
3072 3075 \
3073 3076 develop(intx, ProfilerPCTickThreshold, 15, \
3074 3077 "Number of ticks in a PC buckets to be a hotspot") \
3075 3078 \
3076 3079 notproduct(intx, DeoptimizeALotInterval, 5, \
3077 3080 "Number of exits until DeoptimizeALot kicks in") \
3078 3081 \
3079 3082 notproduct(intx, ZombieALotInterval, 5, \
3080 3083 "Number of exits until ZombieALot kicks in") \
3081 3084 \
3082 3085 diagnostic(intx, MallocVerifyInterval, 0, \
3083 3086 "If non-zero, verify C heap after every N calls to " \
3084 3087 "malloc/realloc/free") \
3085 3088 \
3086 3089 diagnostic(intx, MallocVerifyStart, 0, \
3087 3090 "If non-zero, start verifying C heap after Nth call to " \
3088 3091 "malloc/realloc/free") \
3089 3092 \
3090 3093 diagnostic(uintx, MallocMaxTestWords, 0, \
3091 3094 "If non-zero, maximum number of words that malloc/realloc can " \
3092 3095 "allocate (for testing only)") \
3093 3096 \
3094 3097 product(intx, TypeProfileWidth, 2, \
3095 3098 "Number of receiver types to record in call/cast profile") \
3096 3099 \
3097 3100 develop(intx, BciProfileWidth, 2, \
3098 3101 "Number of return bci's to record in ret profile") \
3099 3102 \
3100 3103 product(intx, PerMethodRecompilationCutoff, 400, \
3101 3104 "After recompiling N times, stay in the interpreter (-1=>'Inf')") \
3102 3105 \
3103 3106 product(intx, PerBytecodeRecompilationCutoff, 200, \
3104 3107 "Per-BCI limit on repeated recompilation (-1=>'Inf')") \
3105 3108 \
3106 3109 product(intx, PerMethodTrapLimit, 100, \
3107 3110 "Limit on traps (of one kind) in a method (includes inlines)") \
3108 3111 \
3109 3112 experimental(intx, PerMethodSpecTrapLimit, 5000, \
3110 3113 "Limit on speculative traps (of one kind) in a method (includes inlines)") \
3111 3114 \
3112 3115 product(intx, PerBytecodeTrapLimit, 4, \
3113 3116 "Limit on traps (of one kind) at a particular BCI") \
3114 3117 \
3115 3118 experimental(intx, SpecTrapLimitExtraEntries, 3, \
3116 3119 "Extra method data trap entries for speculation") \
3117 3120 \
3118 3121 develop(intx, InlineFrequencyRatio, 20, \
3119 3122 "Ratio of call site execution to caller method invocation") \
3120 3123 \
3121 3124 develop_pd(intx, InlineFrequencyCount, \
3122 3125 "Count of call site execution necessary to trigger frequent " \
3123 3126 "inlining") \
3124 3127 \
3125 3128 develop(intx, InlineThrowCount, 50, \
3126 3129 "Force inlining of interpreted methods that throw this often") \
3127 3130 \
3128 3131 develop(intx, InlineThrowMaxSize, 200, \
3129 3132 "Force inlining of throwing methods smaller than this") \
3130 3133 \
3131 3134 develop(intx, ProfilerNodeSize, 1024, \
3132 3135 "Size in K to allocate for the Profile Nodes of each thread") \
3133 3136 \
3134 3137 product_pd(intx, PreInflateSpin, \
3135 3138 "Number of times to spin wait before inflation") \
3136 3139 \
3137 3140 /* gc parameters */ \
3138 3141 product(uintx, InitialHeapSize, 0, \
3139 3142 "Initial heap size (in bytes); zero means use ergonomics") \
3140 3143 \
3141 3144 product(uintx, MaxHeapSize, ScaleForWordSize(96*M), \
3142 3145 "Maximum heap size (in bytes)") \
3143 3146 \
3144 3147 product(uintx, OldSize, ScaleForWordSize(4*M), \
3145 3148 "Initial tenured generation size (in bytes)") \
3146 3149 \
3147 3150 product(uintx, NewSize, ScaleForWordSize(1*M), \
3148 3151 "Initial new generation size (in bytes)") \
3149 3152 \
3150 3153 product(uintx, MaxNewSize, max_uintx, \
3151 3154 "Maximum new generation size (in bytes), max_uintx means set " \
3152 3155 "ergonomically") \
3153 3156 \
3154 3157 product(uintx, PretenureSizeThreshold, 0, \
3155 3158 "Maximum size in bytes of objects allocated in DefNew " \
3156 3159 "generation; zero means no maximum") \
3157 3160 \
3158 3161 product(uintx, TLABSize, 0, \
3159 3162 "Starting TLAB size (in bytes); zero means set ergonomically") \
3160 3163 \
3161 3164 product(uintx, MinTLABSize, 2*K, \
3162 3165 "Minimum allowed TLAB size (in bytes)") \
3163 3166 \
3164 3167 product(uintx, TLABAllocationWeight, 35, \
3165 3168 "Allocation averaging weight") \
3166 3169 \
3167 3170 product(uintx, TLABWasteTargetPercent, 1, \
3168 3171 "Percentage of Eden that can be wasted") \
3169 3172 \
3170 3173 product(uintx, TLABRefillWasteFraction, 64, \
3171 3174 "Maximum TLAB waste at a refill (internal fragmentation)") \
3172 3175 \
3173 3176 product(uintx, TLABWasteIncrement, 4, \
3174 3177 "Increment allowed waste at slow allocation") \
3175 3178 \
3176 3179 product(uintx, SurvivorRatio, 8, \
3177 3180 "Ratio of eden/survivor space size") \
3178 3181 \
3179 3182 product(uintx, NewRatio, 2, \
3180 3183 "Ratio of old/new generation sizes") \
3181 3184 \
3182 3185 product_pd(uintx, NewSizeThreadIncrease, \
3183 3186 "Additional size added to desired new generation size per " \
3184 3187 "non-daemon thread (in bytes)") \
3185 3188 \
3186 3189 product_pd(uintx, MetaspaceSize, \
3187 3190 "Initial size of Metaspaces (in bytes)") \
3188 3191 \
3189 3192 product(uintx, MaxMetaspaceSize, max_uintx, \
3190 3193 "Maximum size of Metaspaces (in bytes)") \
3191 3194 \
3192 3195 product(uintx, CompressedClassSpaceSize, 1*G, \
3193 3196 "Maximum size of class area in Metaspace when compressed " \
3194 3197 "class pointers are used") \
3195 3198 \
3196 3199 manageable(uintx, MinHeapFreeRatio, 40, \
3197 3200 "The minimum percentage of heap free after GC to avoid expansion."\
3198 3201 " For most GCs this applies to the old generation. In G1 and" \
3199 3202 " ParallelGC it applies to the whole heap.") \
3200 3203 \
3201 3204 manageable(uintx, MaxHeapFreeRatio, 70, \
3202 3205 "The maximum percentage of heap free after GC to avoid shrinking."\
3203 3206 " For most GCs this applies to the old generation. In G1 and" \
3204 3207 " ParallelGC it applies to the whole heap.") \
3205 3208 \
3206 3209 product(intx, SoftRefLRUPolicyMSPerMB, 1000, \
3207 3210 "Number of milliseconds per MB of free space in the heap") \
3208 3211 \
3209 3212 product(uintx, MinHeapDeltaBytes, ScaleForWordSize(128*K), \
3210 3213 "The minimum change in heap space due to GC (in bytes)") \
3211 3214 \
3212 3215 product(uintx, MinMetaspaceExpansion, ScaleForWordSize(256*K), \
3213 3216 "The minimum expansion of Metaspace (in bytes)") \
3214 3217 \
3215 3218 product(uintx, MinMetaspaceFreeRatio, 40, \
3216 3219 "The minimum percentage of Metaspace free after GC to avoid " \
3217 3220 "expansion") \
3218 3221 \
3219 3222 product(uintx, MaxMetaspaceFreeRatio, 70, \
3220 3223 "The maximum percentage of Metaspace free after GC to avoid " \
3221 3224 "shrinking") \
3222 3225 \
3223 3226 product(uintx, MaxMetaspaceExpansion, ScaleForWordSize(4*M), \
3224 3227 "The maximum expansion of Metaspace without full GC (in bytes)") \
3225 3228 \
3226 3229 product(uintx, QueuedAllocationWarningCount, 0, \
3227 3230 "Number of times an allocation that queues behind a GC " \
3228 3231 "will retry before printing a warning") \
3229 3232 \
3230 3233 diagnostic(uintx, VerifyGCStartAt, 0, \
3231 3234 "GC invoke count where +VerifyBefore/AfterGC kicks in") \
3232 3235 \
3233 3236 diagnostic(intx, VerifyGCLevel, 0, \
3234 3237 "Generation level at which to start +VerifyBefore/AfterGC") \
3235 3238 \
3236 3239 product(uintx, MaxTenuringThreshold, 15, \
3237 3240 "Maximum value for tenuring threshold") \
3238 3241 \
3239 3242 product(uintx, InitialTenuringThreshold, 7, \
3240 3243 "Initial value for tenuring threshold") \
3241 3244 \
3242 3245 product(uintx, TargetSurvivorRatio, 50, \
3243 3246 "Desired percentage of survivor space used after scavenge") \
3244 3247 \
3245 3248 product(uintx, MarkSweepDeadRatio, 5, \
3246 3249 "Percentage (0-100) of the old gen allowed as dead wood. " \
3247 3250 "Serial mark sweep treats this as both the minimum and maximum " \
3248 3251 "value. " \
3249 3252 "CMS uses this value only if it falls back to mark sweep. " \
3250 3253 "Par compact uses a variable scale based on the density of the " \
3251 3254 "generation and treats this as the maximum value when the heap " \
3252 3255 "is either completely full or completely empty. Par compact " \
3253 3256 "also has a smaller default value; see arguments.cpp.") \
3254 3257 \
3255 3258 product(uintx, MarkSweepAlwaysCompactCount, 4, \
3256 3259 "How often should we fully compact the heap (ignoring the dead " \
3257 3260 "space parameters)") \
3258 3261 \
3259 3262 product(intx, PrintCMSStatistics, 0, \
3260 3263 "Statistics for CMS") \
3261 3264 \
3262 3265 product(bool, PrintCMSInitiationStatistics, false, \
3263 3266 "Statistics for initiating a CMS collection") \
3264 3267 \
3265 3268 product(intx, PrintFLSStatistics, 0, \
3266 3269 "Statistics for CMS' FreeListSpace") \
3267 3270 \
3268 3271 product(intx, PrintFLSCensus, 0, \
3269 3272 "Census for CMS' FreeListSpace") \
3270 3273 \
3271 3274 develop(uintx, GCExpandToAllocateDelayMillis, 0, \
3272 3275 "Delay between expansion and allocation (in milliseconds)") \
3273 3276 \
3274 3277 develop(uintx, GCWorkerDelayMillis, 0, \
3275 3278 "Delay in scheduling GC workers (in milliseconds)") \
3276 3279 \
3277 3280 product(intx, DeferThrSuspendLoopCount, 4000, \
3278 3281 "(Unstable) Number of times to iterate in safepoint loop " \
3279 3282 "before blocking VM threads ") \
3280 3283 \
3281 3284 product(intx, DeferPollingPageLoopCount, -1, \
3282 3285 "(Unsafe,Unstable) Number of iterations in safepoint loop " \
3283 3286 "before changing safepoint polling page to RO ") \
3284 3287 \
3285 3288 product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \
3286 3289 \
3287 3290 product(bool, PSChunkLargeArrays, true, \
3288 3291 "Process large arrays in chunks") \
3289 3292 \
3290 3293 product(uintx, GCDrainStackTargetSize, 64, \
3291 3294 "Number of entries we will try to leave on the stack " \
3292 3295 "during parallel gc") \
3293 3296 \
3294 3297 /* stack parameters */ \
3295 3298 product_pd(intx, StackYellowPages, \
3296 3299 "Number of yellow zone (recoverable overflows) pages") \
3297 3300 \
3298 3301 product_pd(intx, StackRedPages, \
3299 3302 "Number of red zone (unrecoverable overflows) pages") \
3300 3303 \
3301 3304 product_pd(intx, StackShadowPages, \
3302 3305 "Number of shadow zone (for overflow checking) pages " \
3303 3306 "this should exceed the depth of the VM and native call stack") \
3304 3307 \
3305 3308 product_pd(intx, ThreadStackSize, \
3306 3309 "Thread Stack Size (in Kbytes)") \
3307 3310 \
3308 3311 product_pd(intx, VMThreadStackSize, \
3309 3312 "Non-Java Thread Stack Size (in Kbytes)") \
3310 3313 \
3311 3314 product_pd(intx, CompilerThreadStackSize, \
3312 3315 "Compiler Thread Stack Size (in Kbytes)") \
3313 3316 \
3314 3317 develop_pd(uintx, JVMInvokeMethodSlack, \
3315 3318 "Stack space (bytes) required for JVM_InvokeMethod to complete") \
3316 3319 \
3317 3320 product(uintx, ThreadSafetyMargin, 50*M, \
3318 3321 "Thread safety margin is used on fixed-stack LinuxThreads (on " \
3319 3322 "Linux/x86 only) to prevent heap-stack collision. Set to 0 to " \
3320 3323 "disable this feature") \
3321 3324 \
3322 3325 /* code cache parameters */ \
3323 3326 /* ppc64 has large code-entry alignment. */ \
3324 3327 develop(uintx, CodeCacheSegmentSize, 64 PPC64_ONLY(+64), \
3325 3328 "Code cache segment size (in bytes) - smallest unit of " \
3326 3329 "allocation") \
3327 3330 \
3328 3331 develop_pd(intx, CodeEntryAlignment, \
3329 3332 "Code entry alignment for generated code (in bytes)") \
3330 3333 \
3331 3334 product_pd(intx, OptoLoopAlignment, \
3332 3335 "Align inner loops to zero relative to this modulus") \
3333 3336 \
3334 3337 product_pd(uintx, InitialCodeCacheSize, \
3335 3338 "Initial code cache size (in bytes)") \
3336 3339 \
3337 3340 develop_pd(uintx, CodeCacheMinimumUseSpace, \
3338 3341 "Minimum code cache size (in bytes) required to start VM.") \
3339 3342 \
3340 3343 product_pd(uintx, ReservedCodeCacheSize, \
3341 3344 "Reserved code cache size (in bytes) - maximum code cache size") \
3342 3345 \
3343 3346 product(uintx, CodeCacheMinimumFreeSpace, 500*K, \
3344 3347 "When less than X space left, we stop compiling") \
3345 3348 \
3346 3349 product_pd(uintx, CodeCacheExpansionSize, \
3347 3350 "Code cache expansion size (in bytes)") \
3348 3351 \
3349 3352 develop_pd(uintx, CodeCacheMinBlockLength, \
3350 3353 "Minimum number of segments in a code cache block") \
3351 3354 \
3352 3355 notproduct(bool, ExitOnFullCodeCache, false, \
3353 3356 "Exit the VM if we fill the code cache") \
3354 3357 \
3355 3358 product(bool, UseCodeCacheFlushing, true, \
3356 3359 "Remove cold/old nmethods from the code cache") \
3357 3360 \
3358 3361 /* interpreter debugging */ \
3359 3362 develop(intx, BinarySwitchThreshold, 5, \
3360 3363 "Minimal number of lookupswitch entries for rewriting to binary " \
3361 3364 "switch") \
3362 3365 \
3363 3366 develop(intx, StopInterpreterAt, 0, \
3364 3367 "Stop interpreter execution at specified bytecode number") \
3365 3368 \
3366 3369 develop(intx, TraceBytecodesAt, 0, \
3367 3370 "Trace bytecodes starting with specified bytecode number") \
3368 3371 \
3369 3372 /* compiler interface */ \
3370 3373 develop(intx, CIStart, 0, \
3371 3374 "The id of the first compilation to permit") \
3372 3375 \
3373 3376 develop(intx, CIStop, max_jint, \
3374 3377 "The id of the last compilation to permit") \
3375 3378 \
3376 3379 develop(intx, CIStartOSR, 0, \
3377 3380 "The id of the first osr compilation to permit " \
3378 3381 "(CICountOSR must be on)") \
3379 3382 \
3380 3383 develop(intx, CIStopOSR, max_jint, \
3381 3384 "The id of the last osr compilation to permit " \
3382 3385 "(CICountOSR must be on)") \
3383 3386 \
3384 3387 develop(intx, CIBreakAtOSR, -1, \
3385 3388 "The id of osr compilation to break at") \
3386 3389 \
3387 3390 develop(intx, CIBreakAt, -1, \
3388 3391 "The id of compilation to break at") \
3389 3392 \
3390 3393 product(ccstrlist, CompileOnly, "", \
3391 3394 "List of methods (pkg/class.name) to restrict compilation to") \
3392 3395 \
3393 3396 product(ccstr, CompileCommandFile, NULL, \
3394 3397 "Read compiler commands from this file [.hotspot_compiler]") \
3395 3398 \
3396 3399 product(ccstrlist, CompileCommand, "", \
3397 3400 "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \
3398 3401 \
3399 3402 develop(bool, ReplayCompiles, false, \
3400 3403 "Enable replay of compilations from ReplayDataFile") \
3401 3404 \
3402 3405 product(ccstr, ReplayDataFile, NULL, \
3403 3406 "File containing compilation replay information" \
3404 3407 "[default: ./replay_pid%p.log] (%p replaced with pid)") \
3405 3408 \
3406 3409 product(ccstr, InlineDataFile, NULL, \
3407 3410 "File containing inlining replay information" \
3408 3411 "[default: ./inline_pid%p.log] (%p replaced with pid)") \
3409 3412 \
3410 3413 develop(intx, ReplaySuppressInitializers, 2, \
3411 3414 "Control handling of class initialization during replay: " \
3412 3415 "0 - don't do anything special; " \
3413 3416 "1 - treat all class initializers as empty; " \
3414 3417 "2 - treat class initializers for application classes as empty; " \
3415 3418 "3 - allow all class initializers to run during bootstrap but " \
3416 3419 " pretend they are empty after starting replay") \
3417 3420 \
3418 3421 develop(bool, ReplayIgnoreInitErrors, false, \
3419 3422 "Ignore exceptions thrown during initialization for replay") \
3420 3423 \
3421 3424 product(bool, DumpReplayDataOnError, true, \
3422 3425 "Record replay data for crashing compiler threads") \
3423 3426 \
3424 3427 product(bool, CICompilerCountPerCPU, false, \
3425 3428 "1 compiler thread for log(N CPUs)") \
3426 3429 \
3427 3430 develop(intx, CIFireOOMAt, -1, \
3428 3431 "Fire OutOfMemoryErrors throughout CI for testing the compiler " \
3429 3432 "(non-negative value throws OOM after this many CI accesses " \
3430 3433 "in each compile)") \
3431 3434 notproduct(intx, CICrashAt, -1, \
3432 3435 "id of compilation to trigger assert in compiler thread for " \
3433 3436 "the purpose of testing, e.g. generation of replay data") \
3434 3437 notproduct(bool, CIObjectFactoryVerify, false, \
3435 3438 "enable potentially expensive verification in ciObjectFactory") \
3436 3439 \
3437 3440 /* Priorities */ \
3438 3441 product_pd(bool, UseThreadPriorities, "Use native thread priorities") \
3439 3442 \
3440 3443 product(intx, ThreadPriorityPolicy, 0, \
3441 3444 "0 : Normal. "\
3442 3445 " VM chooses priorities that are appropriate for normal "\
3443 3446 " applications. On Solaris NORM_PRIORITY and above are mapped "\
3444 3447 " to normal native priority. Java priorities below " \
3445 3448 " NORM_PRIORITY map to lower native priority values. On "\
3446 3449 " Windows applications are allowed to use higher native "\
3447 3450 " priorities. However, with ThreadPriorityPolicy=0, VM will "\
3448 3451 " not use the highest possible native priority, "\
3449 3452 " THREAD_PRIORITY_TIME_CRITICAL, as it may interfere with "\
3450 3453 " system threads. On Linux thread priorities are ignored "\
3451 3454 " because the OS does not support static priority in "\
3452 3455 " SCHED_OTHER scheduling class which is the only choice for "\
3453 3456 " non-root, non-realtime applications. "\
3454 3457 "1 : Aggressive. "\
3455 3458 " Java thread priorities map over to the entire range of "\
3456 3459 " native thread priorities. Higher Java thread priorities map "\
3457 3460 " to higher native thread priorities. This policy should be "\
3458 3461 " used with care, as sometimes it can cause performance "\
3459 3462 " degradation in the application and/or the entire system. On "\
3460 3463 " Linux this policy requires root privilege.") \
3461 3464 \
3462 3465 product(bool, ThreadPriorityVerbose, false, \
3463 3466 "Print priority changes") \
3464 3467 \
3465 3468 product(intx, DefaultThreadPriority, -1, \
3466 3469 "The native priority at which threads run if not elsewhere " \
3467 3470 "specified (-1 means no change)") \
3468 3471 \
3469 3472 product(intx, CompilerThreadPriority, -1, \
3470 3473 "The native priority at which compiler threads should run " \
3471 3474 "(-1 means no change)") \
3472 3475 \
3473 3476 product(intx, VMThreadPriority, -1, \
3474 3477 "The native priority at which the VM thread should run " \
3475 3478 "(-1 means no change)") \
3476 3479 \
3477 3480 product(bool, CompilerThreadHintNoPreempt, true, \
3478 3481 "(Solaris only) Give compiler threads an extra quanta") \
3479 3482 \
3480 3483 product(bool, VMThreadHintNoPreempt, false, \
3481 3484 "(Solaris only) Give VM thread an extra quanta") \
3482 3485 \
3483 3486 product(intx, JavaPriority1_To_OSPriority, -1, \
3484 3487 "Map Java priorities to OS priorities") \
3485 3488 \
3486 3489 product(intx, JavaPriority2_To_OSPriority, -1, \
3487 3490 "Map Java priorities to OS priorities") \
3488 3491 \
3489 3492 product(intx, JavaPriority3_To_OSPriority, -1, \
3490 3493 "Map Java priorities to OS priorities") \
3491 3494 \
3492 3495 product(intx, JavaPriority4_To_OSPriority, -1, \
3493 3496 "Map Java priorities to OS priorities") \
3494 3497 \
3495 3498 product(intx, JavaPriority5_To_OSPriority, -1, \
3496 3499 "Map Java priorities to OS priorities") \
3497 3500 \
3498 3501 product(intx, JavaPriority6_To_OSPriority, -1, \
3499 3502 "Map Java priorities to OS priorities") \
3500 3503 \
3501 3504 product(intx, JavaPriority7_To_OSPriority, -1, \
3502 3505 "Map Java priorities to OS priorities") \
3503 3506 \
3504 3507 product(intx, JavaPriority8_To_OSPriority, -1, \
3505 3508 "Map Java priorities to OS priorities") \
3506 3509 \
3507 3510 product(intx, JavaPriority9_To_OSPriority, -1, \
3508 3511 "Map Java priorities to OS priorities") \
3509 3512 \
3510 3513 product(intx, JavaPriority10_To_OSPriority,-1, \
3511 3514 "Map Java priorities to OS priorities") \
3512 3515 \
3513 3516 experimental(bool, UseCriticalJavaThreadPriority, false, \
3514 3517 "Java thread priority 10 maps to critical scheduling priority") \
3515 3518 \
3516 3519 experimental(bool, UseCriticalCompilerThreadPriority, false, \
3517 3520 "Compiler thread(s) run at critical scheduling priority") \
3518 3521 \
3519 3522 experimental(bool, UseCriticalCMSThreadPriority, false, \
3520 3523 "ConcurrentMarkSweep thread runs at critical scheduling priority")\
3521 3524 \
3522 3525 /* compiler debugging */ \
3523 3526 notproduct(intx, CompileTheWorldStartAt, 1, \
3524 3527 "First class to consider when using +CompileTheWorld") \
3525 3528 \
3526 3529 notproduct(intx, CompileTheWorldStopAt, max_jint, \
3527 3530 "Last class to consider when using +CompileTheWorld") \
3528 3531 \
3529 3532 develop(intx, NewCodeParameter, 0, \
3530 3533 "Testing Only: Create a dedicated integer parameter before " \
3531 3534 "putback") \
3532 3535 \
3533 3536 /* new oopmap storage allocation */ \
3534 3537 develop(intx, MinOopMapAllocation, 8, \
3535 3538 "Minimum number of OopMap entries in an OopMapSet") \
3536 3539 \
3537 3540 /* Background Compilation */ \
3538 3541 develop(intx, LongCompileThreshold, 50, \
3539 3542 "Used with +TraceLongCompiles") \
3540 3543 \
3541 3544 product(intx, StarvationMonitorInterval, 200, \
3542 3545 "Pause between each check (in milliseconds)") \
3543 3546 \
3544 3547 /* recompilation */ \
3545 3548 product_pd(intx, CompileThreshold, \
3546 3549 "number of interpreted method invocations before (re-)compiling") \
3547 3550 \
3548 3551 product_pd(intx, BackEdgeThreshold, \
3549 3552 "Interpreter Back edge threshold at which an OSR compilation is " \
3550 3553 "invoked") \
3551 3554 \
3552 3555 product(intx, Tier0InvokeNotifyFreqLog, 7, \
3553 3556 "Interpreter (tier 0) invocation notification frequency") \
3554 3557 \
3555 3558 product(intx, Tier2InvokeNotifyFreqLog, 11, \
3556 3559 "C1 without MDO (tier 2) invocation notification frequency") \
3557 3560 \
3558 3561 product(intx, Tier3InvokeNotifyFreqLog, 10, \
3559 3562 "C1 with MDO profiling (tier 3) invocation notification " \
3560 3563 "frequency") \
3561 3564 \
3562 3565 product(intx, Tier23InlineeNotifyFreqLog, 20, \
3563 3566 "Inlinee invocation (tiers 2 and 3) notification frequency") \
3564 3567 \
3565 3568 product(intx, Tier0BackedgeNotifyFreqLog, 10, \
3566 3569 "Interpreter (tier 0) invocation notification frequency") \
3567 3570 \
3568 3571 product(intx, Tier2BackedgeNotifyFreqLog, 14, \
3569 3572 "C1 without MDO (tier 2) invocation notification frequency") \
3570 3573 \
3571 3574 product(intx, Tier3BackedgeNotifyFreqLog, 13, \
3572 3575 "C1 with MDO profiling (tier 3) invocation notification " \
3573 3576 "frequency") \
3574 3577 \
3575 3578 product(intx, Tier2CompileThreshold, 0, \
3576 3579 "threshold at which tier 2 compilation is invoked") \
3577 3580 \
3578 3581 product(intx, Tier2BackEdgeThreshold, 0, \
3579 3582 "Back edge threshold at which tier 2 compilation is invoked") \
3580 3583 \
3581 3584 product(intx, Tier3InvocationThreshold, 200, \
3582 3585 "Compile if number of method invocations crosses this " \
3583 3586 "threshold") \
3584 3587 \
3585 3588 product(intx, Tier3MinInvocationThreshold, 100, \
3586 3589 "Minimum invocation to compile at tier 3") \
3587 3590 \
3588 3591 product(intx, Tier3CompileThreshold, 2000, \
3589 3592 "Threshold at which tier 3 compilation is invoked (invocation " \
3590 3593 "minimum must be satisfied") \
3591 3594 \
3592 3595 product(intx, Tier3BackEdgeThreshold, 60000, \
3593 3596 "Back edge threshold at which tier 3 OSR compilation is invoked") \
3594 3597 \
3595 3598 product(intx, Tier4InvocationThreshold, 5000, \
3596 3599 "Compile if number of method invocations crosses this " \
3597 3600 "threshold") \
3598 3601 \
3599 3602 product(intx, Tier4MinInvocationThreshold, 600, \
3600 3603 "Minimum invocation to compile at tier 4") \
3601 3604 \
3602 3605 product(intx, Tier4CompileThreshold, 15000, \
3603 3606 "Threshold at which tier 4 compilation is invoked (invocation " \
3604 3607 "minimum must be satisfied") \
3605 3608 \
3606 3609 product(intx, Tier4BackEdgeThreshold, 40000, \
3607 3610 "Back edge threshold at which tier 4 OSR compilation is invoked") \
3608 3611 \
3609 3612 product(intx, Tier3DelayOn, 5, \
3610 3613 "If C2 queue size grows over this amount per compiler thread " \
3611 3614 "stop compiling at tier 3 and start compiling at tier 2") \
3612 3615 \
3613 3616 product(intx, Tier3DelayOff, 2, \
3614 3617 "If C2 queue size is less than this amount per compiler thread " \
3615 3618 "allow methods compiled at tier 2 transition to tier 3") \
3616 3619 \
3617 3620 product(intx, Tier3LoadFeedback, 5, \
3618 3621 "Tier 3 thresholds will increase twofold when C1 queue size " \
3619 3622 "reaches this amount per compiler thread") \
3620 3623 \
3621 3624 product(intx, Tier4LoadFeedback, 3, \
3622 3625 "Tier 4 thresholds will increase twofold when C2 queue size " \
3623 3626 "reaches this amount per compiler thread") \
3624 3627 \
3625 3628 product(intx, TieredCompileTaskTimeout, 50, \
3626 3629 "Kill compile task if method was not used within " \
3627 3630 "given timeout in milliseconds") \
3628 3631 \
3629 3632 product(intx, TieredStopAtLevel, 4, \
3630 3633 "Stop at given compilation level") \
3631 3634 \
3632 3635 product(intx, Tier0ProfilingStartPercentage, 200, \
3633 3636 "Start profiling in interpreter if the counters exceed tier 3 " \
3634 3637 "thresholds by the specified percentage") \
3635 3638 \
3636 3639 product(uintx, IncreaseFirstTierCompileThresholdAt, 50, \
3637 3640 "Increase the compile threshold for C1 compilation if the code " \
3638 3641 "cache is filled by the specified percentage") \
3639 3642 \
3640 3643 product(intx, TieredRateUpdateMinTime, 1, \
3641 3644 "Minimum rate sampling interval (in milliseconds)") \
3642 3645 \
3643 3646 product(intx, TieredRateUpdateMaxTime, 25, \
3644 3647 "Maximum rate sampling interval (in milliseconds)") \
3645 3648 \
3646 3649 product_pd(bool, TieredCompilation, \
3647 3650 "Enable tiered compilation") \
3648 3651 \
3649 3652 product(bool, PrintTieredEvents, false, \
3650 3653 "Print tiered events notifications") \
3651 3654 \
3652 3655 product_pd(intx, OnStackReplacePercentage, \
3653 3656 "NON_TIERED number of method invocations/branches (expressed as " \
3654 3657 "% of CompileThreshold) before (re-)compiling OSR code") \
3655 3658 \
3656 3659 product(intx, InterpreterProfilePercentage, 33, \
3657 3660 "NON_TIERED number of method invocations/branches (expressed as " \
3658 3661 "% of CompileThreshold) before profiling in the interpreter") \
3659 3662 \
3660 3663 develop(intx, MaxRecompilationSearchLength, 10, \
3661 3664 "The maximum number of frames to inspect when searching for " \
3662 3665 "recompilee") \
3663 3666 \
3664 3667 develop(intx, MaxInterpretedSearchLength, 3, \
3665 3668 "The maximum number of interpreted frames to skip when searching "\
3666 3669 "for recompilee") \
3667 3670 \
3668 3671 develop(intx, DesiredMethodLimit, 8000, \
3669 3672 "The desired maximum method size (in bytecodes) after inlining") \
3670 3673 \
3671 3674 develop(intx, HugeMethodLimit, 8000, \
3672 3675 "Don't compile methods larger than this if " \
3673 3676 "+DontCompileHugeMethods") \
3674 3677 \
3675 3678 /* New JDK 1.4 reflection implementation */ \
3676 3679 \
3677 3680 develop(bool, UseNewReflection, true, \
3678 3681 "Temporary flag for transition to reflection based on dynamic " \
3679 3682 "bytecode generation in 1.4; can no longer be turned off in 1.4 " \
3680 3683 "JDK, and is unneeded in 1.3 JDK, but marks most places VM " \
3681 3684 "changes were needed") \
3682 3685 \
3683 3686 develop(bool, VerifyReflectionBytecodes, false, \
3684 3687 "Force verification of 1.4 reflection bytecodes. Does not work " \
3685 3688 "in situations like that described in 4486457 or for " \
3686 3689 "constructors generated for serialization, so can not be enabled "\
3687 3690 "in product.") \
3688 3691 \
3689 3692 product(bool, ReflectionWrapResolutionErrors, true, \
3690 3693 "Temporary flag for transition to AbstractMethodError wrapped " \
3691 3694 "in InvocationTargetException. See 6531596") \
3692 3695 \
3693 3696 develop(intx, FastSuperclassLimit, 8, \
3694 3697 "Depth of hardwired instanceof accelerator array") \
3695 3698 \
3696 3699 /* Properties for Java libraries */ \
3697 3700 \
3698 3701 product(uintx, MaxDirectMemorySize, 0, \
3699 3702 "Maximum total size of NIO direct-buffer allocations") \
3700 3703 \
3701 3704 /* temporary developer defined flags */ \
3702 3705 \
3703 3706 diagnostic(bool, UseNewCode, false, \
3704 3707 "Testing Only: Use the new version while testing") \
3705 3708 \
3706 3709 diagnostic(bool, UseNewCode2, false, \
3707 3710 "Testing Only: Use the new version while testing") \
3708 3711 \
3709 3712 diagnostic(bool, UseNewCode3, false, \
3710 3713 "Testing Only: Use the new version while testing") \
3711 3714 \
3712 3715 /* flags for performance data collection */ \
3713 3716 \
3714 3717 product(bool, UsePerfData, falseInEmbedded, \
3715 3718 "Flag to disable jvmstat instrumentation for performance testing "\
3716 3719 "and problem isolation purposes") \
3717 3720 \
3718 3721 product(bool, PerfDataSaveToFile, false, \
3719 3722 "Save PerfData memory to hsperfdata_<pid> file on exit") \
3720 3723 \
3721 3724 product(ccstr, PerfDataSaveFile, NULL, \
3722 3725 "Save PerfData memory to the specified absolute pathname. " \
3723 3726 "The string %p in the file name (if present) " \
3724 3727 "will be replaced by pid") \
3725 3728 \
3726 3729 product(intx, PerfDataSamplingInterval, 50, \
3727 3730 "Data sampling interval (in milliseconds)") \
3728 3731 \
3729 3732 develop(bool, PerfTraceDataCreation, false, \
3730 3733 "Trace creation of Performance Data Entries") \
3731 3734 \
3732 3735 develop(bool, PerfTraceMemOps, false, \
3733 3736 "Trace PerfMemory create/attach/detach calls") \
3734 3737 \
3735 3738 product(bool, PerfDisableSharedMem, false, \
3736 3739 "Store performance data in standard memory") \
3737 3740 \
3738 3741 product(intx, PerfDataMemorySize, 32*K, \
3739 3742 "Size of performance data memory region. Will be rounded " \
3740 3743 "up to a multiple of the native os page size.") \
3741 3744 \
3742 3745 product(intx, PerfMaxStringConstLength, 1024, \
3743 3746 "Maximum PerfStringConstant string length before truncation") \
3744 3747 \
3745 3748 product(bool, PerfAllowAtExitRegistration, false, \
3746 3749 "Allow registration of atexit() methods") \
3747 3750 \
3748 3751 product(bool, PerfBypassFileSystemCheck, false, \
3749 3752 "Bypass Win32 file system criteria checks (Windows Only)") \
3750 3753 \
3751 3754 product(intx, UnguardOnExecutionViolation, 0, \
3752 3755 "Unguard page and retry on no-execute fault (Win32 only) " \
3753 3756 "0=off, 1=conservative, 2=aggressive") \
3754 3757 \
3755 3758 /* Serviceability Support */ \
3756 3759 \
3757 3760 product(bool, ManagementServer, false, \
3758 3761 "Create JMX Management Server") \
3759 3762 \
3760 3763 product(bool, DisableAttachMechanism, false, \
3761 3764 "Disable mechanism that allows tools to attach to this VM") \
3762 3765 \
3763 3766 product(bool, StartAttachListener, false, \
3764 3767 "Always start Attach Listener at VM startup") \
3765 3768 \
3766 3769 manageable(bool, PrintConcurrentLocks, false, \
3767 3770 "Print java.util.concurrent locks in thread dump") \
3768 3771 \
3769 3772 product(bool, TransmitErrorReport, false, \
3770 3773 "Enable error report transmission on erroneous termination") \
3771 3774 \
3772 3775 product(ccstr, ErrorReportServer, NULL, \
3773 3776 "Override built-in error report server address") \
3774 3777 \
3775 3778 /* Shared spaces */ \
3776 3779 \
3777 3780 product(bool, UseSharedSpaces, true, \
3778 3781 "Use shared spaces for metadata") \
3779 3782 \
3780 3783 product(bool, VerifySharedSpaces, false, \
3781 3784 "Verify shared spaces (false for default archive, true for " \
3782 3785 "archive specified by -XX:SharedArchiveFile)") \
3783 3786 \
3784 3787 product(bool, RequireSharedSpaces, false, \
3785 3788 "Require shared spaces for metadata") \
3786 3789 \
3787 3790 product(bool, DumpSharedSpaces, false, \
3788 3791 "Special mode: JVM reads a class list, loads classes, builds " \
3789 3792 "shared spaces, and dumps the shared spaces to a file to be " \
3790 3793 "used in future JVM runs") \
3791 3794 \
3792 3795 product(bool, PrintSharedSpaces, false, \
3793 3796 "Print usage of shared spaces") \
3794 3797 \
3795 3798 product(bool, PrintSharedArchiveAndExit, false, \
3796 3799 "Print shared archive file contents") \
3797 3800 \
3798 3801 product(bool, PrintSharedDictionary, false, \
3799 3802 "If PrintSharedArchiveAndExit is true, also print the shared " \
3800 3803 "dictionary") \
3801 3804 \
3802 3805 product(uintx, SharedReadWriteSize, NOT_LP64(12*M) LP64_ONLY(16*M), \
3803 3806 "Size of read-write space for metadata (in bytes)") \
3804 3807 \
3805 3808 product(uintx, SharedReadOnlySize, NOT_LP64(12*M) LP64_ONLY(16*M), \
3806 3809 "Size of read-only space for metadata (in bytes)") \
3807 3810 \
3808 3811 product(uintx, SharedMiscDataSize, NOT_LP64(2*M) LP64_ONLY(4*M), \
3809 3812 "Size of the shared miscellaneous data area (in bytes)") \
3810 3813 \
3811 3814 product(uintx, SharedMiscCodeSize, 120*K, \
3812 3815 "Size of the shared miscellaneous code area (in bytes)") \
3813 3816 \
3814 3817 product(uintx, SharedBaseAddress, LP64_ONLY(32*G) \
3815 3818 NOT_LP64(LINUX_ONLY(2*G) NOT_LINUX(0)), \
3816 3819 "Address to allocate shared memory region for class data") \
3817 3820 \
3818 3821 diagnostic(bool, EnableInvokeDynamic, true, \
3819 3822 "support JSR 292 (method handles, invokedynamic, " \
3820 3823 "anonymous classes") \
3821 3824 \
3822 3825 diagnostic(bool, IgnoreUnverifiableClassesDuringDump, false, \
3823 3826 "Do not quit -Xshare:dump even if we encounter unverifiable " \
3824 3827 "classes. Just exclude them from the shared dictionary.") \
3825 3828 \
3826 3829 diagnostic(bool, PrintMethodHandleStubs, false, \
3827 3830 "Print generated stub code for method handles") \
3828 3831 \
3829 3832 develop(bool, TraceMethodHandles, false, \
3830 3833 "trace internal method handle operations") \
3831 3834 \
3832 3835 diagnostic(bool, VerifyMethodHandles, trueInDebug, \
3833 3836 "perform extra checks when constructing method handles") \
3834 3837 \
3835 3838 diagnostic(bool, ShowHiddenFrames, false, \
3836 3839 "show method handle implementation frames (usually hidden)") \
3837 3840 \
3838 3841 experimental(bool, TrustFinalNonStaticFields, false, \
3839 3842 "trust final non-static declarations for constant folding") \
3840 3843 \
3841 3844 diagnostic(bool, FoldStableValues, true, \
3842 3845 "Optimize loads from stable fields (marked w/ @Stable)") \
3843 3846 \
3844 3847 develop(bool, TraceInvokeDynamic, false, \
3845 3848 "trace internal invoke dynamic operations") \
3846 3849 \
3847 3850 diagnostic(bool, PauseAtStartup, false, \
3848 3851 "Causes the VM to pause at startup time and wait for the pause " \
3849 3852 "file to be removed (default: ./vm.paused.<pid>)") \
3850 3853 \
3851 3854 diagnostic(ccstr, PauseAtStartupFile, NULL, \
3852 3855 "The file to create and for whose removal to await when pausing " \
3853 3856 "at startup. (default: ./vm.paused.<pid>)") \
3854 3857 \
3855 3858 diagnostic(bool, PauseAtExit, false, \
3856 3859 "Pause and wait for keypress on exit if a debugger is attached") \
3857 3860 \
3858 3861 product(bool, ExtendedDTraceProbes, false, \
3859 3862 "Enable performance-impacting dtrace probes") \
3860 3863 \
3861 3864 product(bool, DTraceMethodProbes, false, \
3862 3865 "Enable dtrace probes for method-entry and method-exit") \
3863 3866 \
3864 3867 product(bool, DTraceAllocProbes, false, \
3865 3868 "Enable dtrace probes for object allocation") \
3866 3869 \
3867 3870 product(bool, DTraceMonitorProbes, false, \
3868 3871 "Enable dtrace probes for monitor events") \
3869 3872 \
3870 3873 product(bool, RelaxAccessControlCheck, false, \
3871 3874 "Relax the access control checks in the verifier") \
3872 3875 \
3873 3876 diagnostic(bool, PrintDTraceDOF, false, \
3874 3877 "Print the DTrace DOF passed to the system for JSDT probes") \
3875 3878 \
3876 3879 product(uintx, StringTableSize, defaultStringTableSize, \
3877 3880 "Number of buckets in the interned String table") \
3878 3881 \
3879 3882 experimental(uintx, SymbolTableSize, defaultSymbolTableSize, \
3880 3883 "Number of buckets in the JVM internal Symbol table") \
3881 3884 \
3882 3885 product(bool, UseStringDeduplication, false, \
3883 3886 "Use string deduplication") \
3884 3887 \
3885 3888 product(bool, PrintStringDeduplicationStatistics, false, \
3886 3889 "Print string deduplication statistics") \
3887 3890 \
3888 3891 product(uintx, StringDeduplicationAgeThreshold, 3, \
3889 3892 "A string must reach this age (or be promoted to an old region) " \
3890 3893 "to be considered for deduplication") \
3891 3894 \
3892 3895 diagnostic(bool, StringDeduplicationResizeALot, false, \
3893 3896 "Force table resize every time the table is scanned") \
3894 3897 \
3895 3898 diagnostic(bool, StringDeduplicationRehashALot, false, \
3896 3899 "Force table rehash every time the table is scanned") \
3897 3900 \
3898 3901 develop(bool, TraceDefaultMethods, false, \
3899 3902 "Trace the default method processing steps") \
3900 3903 \
3901 3904 develop(bool, VerifyGenericSignatures, false, \
3902 3905 "Abort VM on erroneous or inconsistent generic signatures") \
3903 3906 \
3904 3907 product(bool, UseVMInterruptibleIO, false, \
3905 3908 "(Unstable, Solaris-specific) Thread interrupt before or with " \
3906 3909 "EINTR for I/O operations results in OS_INTRPT. The default " \
3907 3910 "value of this flag is true for JDK 6 and earlier") \
3908 3911 \
3909 3912 diagnostic(bool, WhiteBoxAPI, false, \
3910 3913 "Enable internal testing APIs") \
3911 3914 \
3912 3915 product(bool, PrintGCCause, true, \
3913 3916 "Include GC cause in GC logging") \
3914 3917 \
3915 3918 experimental(intx, SurvivorAlignmentInBytes, 0, \
3916 3919 "Default survivor space alignment in bytes") \
3917 3920 \
3918 3921 product(bool , AllowNonVirtualCalls, false, \
3919 3922 "Obey the ACC_SUPER flag and allow invokenonvirtual calls") \
3920 3923 \
3921 3924 product(ccstr, DumpLoadedClassList, NULL, \
3922 3925 "Dump the names all loaded classes, that could be stored into " \
3923 3926 "the CDS archive, in the specified file") \
3924 3927 \
3925 3928 product(ccstr, SharedClassListFile, NULL, \
3926 3929 "Override the default CDS class list") \
3927 3930 \
3928 3931 diagnostic(ccstr, SharedArchiveFile, NULL, \
3929 3932 "Override the default location of the CDS archive file") \
3930 3933 \
3931 3934 product(ccstr, ExtraSharedClassListFile, NULL, \
3932 3935 "Extra classlist for building the CDS archive file") \
3933 3936 \
3934 3937 experimental(uintx, ArrayAllocatorMallocLimit, \
3935 3938 SOLARIS_ONLY(64*K) NOT_SOLARIS(max_uintx), \
3936 3939 "Allocation less than this value will be allocated " \
3937 3940 "using malloc. Larger allocations will use mmap.") \
3938 3941 \
3939 3942 product(bool, EnableTracing, false, \
3940 3943 "Enable event-based tracing") \
3941 3944 \
3942 3945 product(bool, UseLockedTracing, false, \
3943 3946 "Use locked-tracing when doing event-based tracing")
3944 3947
3945 3948 /*
3946 3949 * Macros for factoring of globals
3947 3950 */
3948 3951
3949 3952 // Interface macros
3950 3953 #define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name;
3951 3954 #define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name;
3952 3955 #define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name;
3953 3956 #define DECLARE_EXPERIMENTAL_FLAG(type, name, value, doc) extern "C" type name;
3954 3957 #define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name;
3955 3958 #define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name;
3956 3959 #ifdef PRODUCT
3957 3960 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type CONST_##name; const type name = value;
3958 3961 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type CONST_##name; const type name = pd_##name;
3959 3962 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type CONST_##name;
3960 3963 #else
3961 3964 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name;
3962 3965 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name;
3963 3966 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name;
3964 3967 #endif
3965 3968 // Special LP64 flags, product only needed for now.
3966 3969 #ifdef _LP64
3967 3970 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) extern "C" type name;
3968 3971 #else
3969 3972 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) const type name = value;
3970 3973 #endif // _LP64
3971 3974
3972 3975 // Implementation macros
3973 3976 #define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value;
3974 3977 #define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name;
3975 3978 #define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value;
3976 3979 #define MATERIALIZE_EXPERIMENTAL_FLAG(type, name, value, doc) type name = value;
3977 3980 #define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value;
3978 3981 #define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value;
3979 3982 #ifdef PRODUCT
3980 3983 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type CONST_##name = value;
3981 3984 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type CONST_##name = pd_##name;
3982 3985 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type CONST_##name = value;
3983 3986 #else
3984 3987 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value;
3985 3988 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name;
3986 3989 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value;
3987 3990 #endif
3988 3991 #ifdef _LP64
3989 3992 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) type name = value;
3990 3993 #else
3991 3994 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) /* flag is constant */
3992 3995 #endif // _LP64
3993 3996
3994 3997 RUNTIME_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_EXPERIMENTAL_FLAG, DECLARE_NOTPRODUCT_FLAG, DECLARE_MANAGEABLE_FLAG, DECLARE_PRODUCT_RW_FLAG, DECLARE_LP64_PRODUCT_FLAG)
3995 3998
3996 3999 RUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG)
3997 4000
3998 4001 ARCH_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_EXPERIMENTAL_FLAG, DECLARE_NOTPRODUCT_FLAG)
3999 4002
4000 4003 // Extensions
4001 4004
4002 4005 #include "runtime/globals_ext.hpp"
4003 4006
4004 4007 #endif // SHARE_VM_RUNTIME_GLOBALS_HPP
|
↓ open down ↓ |
2782 lines elided |
↑ open up ↑ |
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX