1 /*
2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_VM_RUNTIME_GLOBALS_HPP
26 #define SHARE_VM_RUNTIME_GLOBALS_HPP
27
28 #include "utilities/debug.hpp"
29
30 // use this for flags that are true per default in the tiered build
31 // but false in non-tiered builds, and vice versa
32 #ifdef TIERED
33 #define trueInTiered true
34 #define falseInTiered false
35 #else
36 #define trueInTiered false
37 #define falseInTiered true
38 #endif
39
40 #ifdef TARGET_ARCH_x86
41 # include "globals_x86.hpp"
42 #endif
43 #ifdef TARGET_ARCH_sparc
44 # include "globals_sparc.hpp"
45 #endif
46 #ifdef TARGET_ARCH_zero
47 # include "globals_zero.hpp"
48 #endif
49 #ifdef TARGET_ARCH_arm
50 # include "globals_arm.hpp"
51 #endif
52 #ifdef TARGET_ARCH_ppc
53 # include "globals_ppc.hpp"
54 #endif
55 #ifdef TARGET_OS_FAMILY_linux
56 # include "globals_linux.hpp"
57 #endif
58 #ifdef TARGET_OS_FAMILY_solaris
59 # include "globals_solaris.hpp"
60 #endif
61 #ifdef TARGET_OS_FAMILY_windows
62 # include "globals_windows.hpp"
63 #endif
64 #ifdef TARGET_OS_FAMILY_aix
65 # include "globals_aix.hpp"
66 #endif
67 #ifdef TARGET_OS_FAMILY_bsd
68 # include "globals_bsd.hpp"
69 #endif
70 #ifdef TARGET_OS_ARCH_linux_x86
71 # include "globals_linux_x86.hpp"
72 #endif
73 #ifdef TARGET_OS_ARCH_linux_sparc
74 # include "globals_linux_sparc.hpp"
75 #endif
76 #ifdef TARGET_OS_ARCH_linux_zero
77 # include "globals_linux_zero.hpp"
78 #endif
79 #ifdef TARGET_OS_ARCH_solaris_x86
80 # include "globals_solaris_x86.hpp"
81 #endif
82 #ifdef TARGET_OS_ARCH_solaris_sparc
83 # include "globals_solaris_sparc.hpp"
84 #endif
85 #ifdef TARGET_OS_ARCH_windows_x86
86 # include "globals_windows_x86.hpp"
87 #endif
88 #ifdef TARGET_OS_ARCH_linux_arm
89 # include "globals_linux_arm.hpp"
90 #endif
91 #ifdef TARGET_OS_ARCH_linux_ppc
92 # include "globals_linux_ppc.hpp"
93 #endif
94 #ifdef TARGET_OS_ARCH_aix_ppc
95 # include "globals_aix_ppc.hpp"
96 #endif
97 #ifdef TARGET_OS_ARCH_bsd_x86
98 # include "globals_bsd_x86.hpp"
99 #endif
100 #ifdef TARGET_OS_ARCH_bsd_zero
101 # include "globals_bsd_zero.hpp"
102 #endif
103 #ifdef COMPILER1
104 #ifdef TARGET_ARCH_x86
105 # include "c1_globals_x86.hpp"
106 #endif
107 #ifdef TARGET_ARCH_sparc
108 # include "c1_globals_sparc.hpp"
109 #endif
110 #ifdef TARGET_ARCH_arm
111 # include "c1_globals_arm.hpp"
112 #endif
113 #ifdef TARGET_ARCH_ppc
114 # include "c1_globals_ppc.hpp"
115 #endif
116 #ifdef TARGET_OS_FAMILY_linux
117 # include "c1_globals_linux.hpp"
118 #endif
119 #ifdef TARGET_OS_FAMILY_solaris
120 # include "c1_globals_solaris.hpp"
121 #endif
122 #ifdef TARGET_OS_FAMILY_windows
123 # include "c1_globals_windows.hpp"
124 #endif
125 #ifdef TARGET_OS_FAMILY_aix
126 # include "c1_globals_aix.hpp"
127 #endif
128 #ifdef TARGET_OS_FAMILY_bsd
129 # include "c1_globals_bsd.hpp"
130 #endif
131 #endif
132 #ifdef COMPILER2
133 #ifdef TARGET_ARCH_x86
134 # include "c2_globals_x86.hpp"
135 #endif
136 #ifdef TARGET_ARCH_sparc
137 # include "c2_globals_sparc.hpp"
138 #endif
139 #ifdef TARGET_ARCH_arm
140 # include "c2_globals_arm.hpp"
141 #endif
142 #ifdef TARGET_ARCH_ppc
143 # include "c2_globals_ppc.hpp"
144 #endif
145 #ifdef TARGET_OS_FAMILY_linux
146 # include "c2_globals_linux.hpp"
147 #endif
148 #ifdef TARGET_OS_FAMILY_solaris
149 # include "c2_globals_solaris.hpp"
150 #endif
151 #ifdef TARGET_OS_FAMILY_windows
152 # include "c2_globals_windows.hpp"
153 #endif
154 #ifdef TARGET_OS_FAMILY_aix
155 # include "c2_globals_aix.hpp"
156 #endif
157 #ifdef TARGET_OS_FAMILY_bsd
158 # include "c2_globals_bsd.hpp"
159 #endif
160 #endif
161 #ifdef SHARK
162 #ifdef TARGET_ARCH_zero
163 # include "shark_globals_zero.hpp"
164 #endif
165 #endif
166
167 #if !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK)
168 define_pd_global(bool, BackgroundCompilation, false);
169 define_pd_global(bool, UseTLAB, false);
170 define_pd_global(bool, CICompileOSR, false);
171 define_pd_global(bool, UseTypeProfile, false);
172 define_pd_global(bool, UseOnStackReplacement, false);
173 define_pd_global(bool, InlineIntrinsics, false);
174 define_pd_global(bool, PreferInterpreterNativeStubs, true);
175 define_pd_global(bool, ProfileInterpreter, false);
176 define_pd_global(bool, ProfileTraps, false);
177 define_pd_global(bool, TieredCompilation, false);
178
179 define_pd_global(intx, CompileThreshold, 0);
180
181 define_pd_global(intx, OnStackReplacePercentage, 0);
182 define_pd_global(bool, ResizeTLAB, false);
183 define_pd_global(intx, FreqInlineSize, 0);
184 define_pd_global(intx, NewSizeThreadIncrease, 4*K);
185 define_pd_global(intx, InlineClassNatives, true);
186 define_pd_global(intx, InlineUnsafeOps, true);
187 define_pd_global(intx, InitialCodeCacheSize, 160*K);
188 define_pd_global(intx, ReservedCodeCacheSize, 32*M);
189 define_pd_global(intx, NonProfiledCodeHeapSize, 0);
190 define_pd_global(intx, ProfiledCodeHeapSize, 0);
191 define_pd_global(intx, NonMethodCodeHeapSize, 32*M);
192
193 define_pd_global(intx, CodeCacheExpansionSize, 32*K);
194 define_pd_global(intx, CodeCacheMinBlockLength, 1);
195 define_pd_global(intx, CodeCacheMinimumUseSpace, 200*K);
196 define_pd_global(uintx,MetaspaceSize, ScaleForWordSize(4*M));
197 define_pd_global(bool, NeverActAsServerClassMachine, true);
198 define_pd_global(uint64_t,MaxRAM, 1ULL*G);
199 #define CI_COMPILER_COUNT 0
200 #else
201
202 #ifdef COMPILER2
203 #define CI_COMPILER_COUNT 2
204 #else
205 #define CI_COMPILER_COUNT 1
206 #endif // COMPILER2
207
208 #endif // no compilers
209
210 // string type aliases used only in this file
211 typedef const char* ccstr;
212 typedef const char* ccstrlist; // represents string arguments which accumulate
213
214 struct Flag {
215 enum Flags {
216 // value origin
217 DEFAULT = 0,
218 COMMAND_LINE = 1,
219 ENVIRON_VAR = 2,
220 CONFIG_FILE = 3,
221 MANAGEMENT = 4,
222 ERGONOMIC = 5,
223 ATTACH_ON_DEMAND = 6,
224 INTERNAL = 7,
225
226 LAST_VALUE_ORIGIN = INTERNAL,
227 VALUE_ORIGIN_BITS = 4,
228 VALUE_ORIGIN_MASK = right_n_bits(VALUE_ORIGIN_BITS),
229
230 // flag kind
231 KIND_PRODUCT = 1 << 4,
232 KIND_MANAGEABLE = 1 << 5,
233 KIND_DIAGNOSTIC = 1 << 6,
234 KIND_EXPERIMENTAL = 1 << 7,
235 KIND_NOT_PRODUCT = 1 << 8,
236 KIND_DEVELOP = 1 << 9,
237 KIND_PLATFORM_DEPENDENT = 1 << 10,
238 KIND_READ_WRITE = 1 << 11,
239 KIND_C1 = 1 << 12,
240 KIND_C2 = 1 << 13,
241 KIND_ARCH = 1 << 14,
242 KIND_SHARK = 1 << 15,
243 KIND_LP64_PRODUCT = 1 << 16,
244 KIND_COMMERCIAL = 1 << 17,
245
246 KIND_MASK = ~VALUE_ORIGIN_MASK
247 };
248
249 const char* _type;
250 const char* _name;
251 void* _addr;
252 NOT_PRODUCT(const char* _doc;)
253 Flags _flags;
254
255 // points to all Flags static array
256 static Flag* flags;
257
258 // number of flags
259 static size_t numFlags;
260
261 static Flag* find_flag(const char* name, size_t length, bool allow_locked = false, bool return_flag = false);
262 static Flag* fuzzy_match(const char* name, size_t length, bool allow_locked = false);
263
264 void check_writable();
265
266 bool is_bool() const;
267 bool get_bool() const;
268 void set_bool(bool value);
269
270 bool is_intx() const;
271 intx get_intx() const;
272 void set_intx(intx value);
273
274 bool is_uintx() const;
275 uintx get_uintx() const;
276 void set_uintx(uintx value);
277
278 bool is_uint64_t() const;
279 uint64_t get_uint64_t() const;
280 void set_uint64_t(uint64_t value);
281
282 bool is_size_t() const;
283 size_t get_size_t() const;
284 void set_size_t(size_t value);
285
286 bool is_double() const;
287 double get_double() const;
288 void set_double(double value);
289
290 bool is_ccstr() const;
291 bool ccstr_accumulates() const;
292 ccstr get_ccstr() const;
293 void set_ccstr(ccstr value);
294
295 Flags get_origin();
296 void set_origin(Flags origin);
297
298 bool is_default();
299 bool is_ergonomic();
300 bool is_command_line();
301
302 bool is_product() const;
303 bool is_manageable() const;
304 bool is_diagnostic() const;
305 bool is_experimental() const;
306 bool is_notproduct() const;
307 bool is_develop() const;
308 bool is_read_write() const;
309 bool is_commercial() const;
310
311 bool is_constant_in_binary() const;
312
313 bool is_unlocker() const;
314 bool is_unlocked() const;
315 bool is_writeable() const;
316 bool is_external() const;
317
318 bool is_unlocker_ext() const;
319 bool is_unlocked_ext() const;
320 bool is_writeable_ext() const;
321 bool is_external_ext() const;
322
323 void get_locked_message(char*, int) const;
324 void get_locked_message_ext(char*, int) const;
325
326 void print_on(outputStream* st, bool withComments = false );
327 void print_kind(outputStream* st);
328 void print_as_flag(outputStream* st);
329 };
330
331 // debug flags control various aspects of the VM and are global accessible
332
333 // use FlagSetting to temporarily change some debug flag
334 // e.g. FlagSetting fs(DebugThisAndThat, true);
335 // restored to previous value upon leaving scope
336 class FlagSetting {
337 bool val;
338 bool* flag;
339 public:
340 FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; }
341 ~FlagSetting() { *flag = val; }
342 };
343
344
345 class CounterSetting {
346 intx* counter;
347 public:
348 CounterSetting(intx* cnt) { counter = cnt; (*counter)++; }
349 ~CounterSetting() { (*counter)--; }
350 };
351
352
353 class UIntFlagSetting {
354 uintx val;
355 uintx* flag;
356 public:
357 UIntFlagSetting(uintx& fl, uintx newValue) { flag = &fl; val = fl; fl = newValue; }
358 ~UIntFlagSetting() { *flag = val; }
359 };
360
361 class DoubleFlagSetting {
362 double val;
363 double* flag;
364 public:
365 DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; }
366 ~DoubleFlagSetting() { *flag = val; }
367 };
368
369 class SizeTFlagSetting {
370 size_t val;
371 size_t* flag;
372 public:
373 SizeTFlagSetting(size_t& fl, size_t newValue) { flag = &fl; val = fl; fl = newValue; }
374 ~SizeTFlagSetting() { *flag = val; }
375 };
376
377
378 class CommandLineFlags {
379 public:
380 static bool boolAt(const char* name, size_t len, bool* value);
381 static bool boolAt(const char* name, bool* value) { return boolAt(name, strlen(name), value); }
382 static bool boolAtPut(const char* name, size_t len, bool* value, Flag::Flags origin);
383 static bool boolAtPut(const char* name, bool* value, Flag::Flags origin) { return boolAtPut(name, strlen(name), value, origin); }
384
385 static bool intxAt(const char* name, size_t len, intx* value);
386 static bool intxAt(const char* name, intx* value) { return intxAt(name, strlen(name), value); }
387 static bool intxAtPut(const char* name, size_t len, intx* value, Flag::Flags origin);
388 static bool intxAtPut(const char* name, intx* value, Flag::Flags origin) { return intxAtPut(name, strlen(name), value, origin); }
389
390 static bool uintxAt(const char* name, size_t len, uintx* value);
391 static bool uintxAt(const char* name, uintx* value) { return uintxAt(name, strlen(name), value); }
392 static bool uintxAtPut(const char* name, size_t len, uintx* value, Flag::Flags origin);
393 static bool uintxAtPut(const char* name, uintx* value, Flag::Flags origin) { return uintxAtPut(name, strlen(name), value, origin); }
394
395 static bool size_tAt(const char* name, size_t len, size_t* value);
396 static bool size_tAt(const char* name, size_t* value) { return size_tAt(name, strlen(name), value); }
397 static bool size_tAtPut(const char* name, size_t len, size_t* value, Flag::Flags origin);
398 static bool size_tAtPut(const char* name, size_t* value, Flag::Flags origin) { return size_tAtPut(name, strlen(name), value, origin); }
399
400 static bool uint64_tAt(const char* name, size_t len, uint64_t* value);
401 static bool uint64_tAt(const char* name, uint64_t* value) { return uint64_tAt(name, strlen(name), value); }
402 static bool uint64_tAtPut(const char* name, size_t len, uint64_t* value, Flag::Flags origin);
403 static bool uint64_tAtPut(const char* name, uint64_t* value, Flag::Flags origin) { return uint64_tAtPut(name, strlen(name), value, origin); }
404
405 static bool doubleAt(const char* name, size_t len, double* value);
406 static bool doubleAt(const char* name, double* value) { return doubleAt(name, strlen(name), value); }
407 static bool doubleAtPut(const char* name, size_t len, double* value, Flag::Flags origin);
408 static bool doubleAtPut(const char* name, double* value, Flag::Flags origin) { return doubleAtPut(name, strlen(name), value, origin); }
409
410 static bool ccstrAt(const char* name, size_t len, ccstr* value);
411 static bool ccstrAt(const char* name, ccstr* value) { return ccstrAt(name, strlen(name), value); }
412 // Contract: Flag will make private copy of the incoming value.
413 // Outgoing value is always malloc-ed, and caller MUST call free.
414 static bool ccstrAtPut(const char* name, size_t len, ccstr* value, Flag::Flags origin);
415 static bool ccstrAtPut(const char* name, ccstr* value, Flag::Flags origin) { return ccstrAtPut(name, strlen(name), value, origin); }
416
417 // Returns false if name is not a command line flag.
418 static bool wasSetOnCmdline(const char* name, bool* value);
419 static void printSetFlags(outputStream* out);
420
421 static void printFlags(outputStream* out, bool withComments);
422
423 static void verify() PRODUCT_RETURN;
424 };
425
426 // use this for flags that are true by default in the debug version but
427 // false in the optimized version, and vice versa
428 #ifdef ASSERT
429 #define trueInDebug true
430 #define falseInDebug false
431 #else
432 #define trueInDebug false
433 #define falseInDebug true
434 #endif
435
436 // use this for flags that are true per default in the product build
437 // but false in development builds, and vice versa
438 #ifdef PRODUCT
439 #define trueInProduct true
440 #define falseInProduct false
441 #else
442 #define trueInProduct false
443 #define falseInProduct true
444 #endif
445
446 #ifdef JAVASE_EMBEDDED
447 #define falseInEmbedded false
448 #else
449 #define falseInEmbedded true
450 #endif
451
452 // develop flags are settable / visible only during development and are constant in the PRODUCT version
453 // product flags are always settable / visible
454 // notproduct flags are settable / visible only during development and are not declared in the PRODUCT version
455
456 // A flag must be declared with one of the following types:
457 // bool, intx, uintx, ccstr.
458 // The type "ccstr" is an alias for "const char*" and is used
459 // only in this file, because the macrology requires single-token type names.
460
461 // Note: Diagnostic options not meant for VM tuning or for product modes.
462 // They are to be used for VM quality assurance or field diagnosis
463 // of VM bugs. They are hidden so that users will not be encouraged to
464 // try them as if they were VM ordinary execution options. However, they
465 // are available in the product version of the VM. Under instruction
466 // from support engineers, VM customers can turn them on to collect
467 // diagnostic information about VM problems. To use a VM diagnostic
468 // option, you must first specify +UnlockDiagnosticVMOptions.
469 // (This master switch also affects the behavior of -Xprintflags.)
470 //
471 // experimental flags are in support of features that are not
472 // part of the officially supported product, but are available
473 // for experimenting with. They could, for example, be performance
474 // features that may not have undergone full or rigorous QA, but which may
475 // help performance in some cases and released for experimentation
476 // by the community of users and developers. This flag also allows one to
477 // be able to build a fully supported product that nonetheless also
478 // ships with some unsupported, lightly tested, experimental features.
479 // Like the UnlockDiagnosticVMOptions flag above, there is a corresponding
480 // UnlockExperimentalVMOptions flag, which allows the control and
481 // modification of the experimental flags.
482 //
483 // Nota bene: neither diagnostic nor experimental options should be used casually,
484 // and they are not supported on production loads, except under explicit
485 // direction from support engineers.
486 //
487 // manageable flags are writeable external product flags.
488 // They are dynamically writeable through the JDK management interface
489 // (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole.
490 // These flags are external exported interface (see CCC). The list of
491 // manageable flags can be queried programmatically through the management
492 // interface.
493 //
494 // A flag can be made as "manageable" only if
495 // - the flag is defined in a CCC as an external exported interface.
496 // - the VM implementation supports dynamic setting of the flag.
497 // This implies that the VM must *always* query the flag variable
498 // and not reuse state related to the flag state at any given time.
499 // - you want the flag to be queried programmatically by the customers.
500 //
501 // product_rw flags are writeable internal product flags.
502 // They are like "manageable" flags but for internal/private use.
503 // The list of product_rw flags are internal/private flags which
504 // may be changed/removed in a future release. It can be set
505 // through the management interface to get/set value
506 // when the name of flag is supplied.
507 //
508 // A flag can be made as "product_rw" only if
509 // - the VM implementation supports dynamic setting of the flag.
510 // This implies that the VM must *always* query the flag variable
511 // and not reuse state related to the flag state at any given time.
512 //
513 // Note that when there is a need to support develop flags to be writeable,
514 // it can be done in the same way as product_rw.
515
516 #define RUNTIME_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw, lp64_product) \
517 \
518 lp64_product(bool, UseCompressedOops, false, \
519 "Use 32-bit object references in 64-bit VM. " \
520 "lp64_product means flag is always constant in 32 bit VM") \
521 \
522 lp64_product(bool, UseCompressedClassPointers, false, \
523 "Use 32-bit class pointers in 64-bit VM. " \
524 "lp64_product means flag is always constant in 32 bit VM") \
525 \
526 notproduct(bool, CheckCompressedOops, true, \
527 "Generate checks in encoding/decoding code in debug VM") \
528 \
529 product_pd(uintx, HeapBaseMinAddress, \
530 "OS specific low limit for heap base address") \
531 \
532 diagnostic(bool, PrintCompressedOopsMode, false, \
533 "Print compressed oops base address and encoding mode") \
534 \
535 lp64_product(intx, ObjectAlignmentInBytes, 8, \
536 "Default object alignment in bytes, 8 is minimum") \
537 \
538 product(bool, AssumeMP, false, \
539 "Instruct the VM to assume multiple processors are available") \
540 \
541 /* UseMembar is theoretically a temp flag used for memory barrier \
542 * removal testing. It was supposed to be removed before FCS but has \
543 * been re-added (see 6401008) */ \
544 product_pd(bool, UseMembar, \
545 "(Unstable) Issues membars on thread state transitions") \
546 \
547 develop(bool, CleanChunkPoolAsync, falseInEmbedded, \
548 "Clean the chunk pool asynchronously") \
549 \
550 experimental(bool, AlwaysSafeConstructors, false, \
551 "Force safe construction, as if all fields are final.") \
552 \
553 /* Temporary: See 6948537 */ \
554 experimental(bool, UseMemSetInBOT, true, \
555 "(Unstable) uses memset in BOT updates in GC code") \
556 \
557 diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \
558 "Enable normal processing of flags relating to field diagnostics")\
559 \
560 experimental(bool, UnlockExperimentalVMOptions, false, \
561 "Enable normal processing of flags relating to experimental " \
562 "features") \
563 \
564 product(bool, JavaMonitorsInStackTrace, true, \
565 "Print information about Java monitor locks when the stacks are" \
566 "dumped") \
567 \
568 product_pd(bool, UseLargePages, \
569 "Use large page memory") \
570 \
571 product_pd(bool, UseLargePagesIndividualAllocation, \
572 "Allocate large pages individually for better affinity") \
573 \
574 develop(bool, LargePagesIndividualAllocationInjectError, false, \
575 "Fail large pages individual allocation") \
576 \
577 product(bool, UseLargePagesInMetaspace, false, \
578 "Use large page memory in metaspace. " \
579 "Only used if UseLargePages is enabled.") \
580 \
581 develop(bool, TracePageSizes, false, \
582 "Trace page size selection and usage") \
583 \
584 product(bool, UseNUMA, false, \
585 "Use NUMA if available") \
586 \
587 product(bool, UseNUMAInterleaving, false, \
588 "Interleave memory across NUMA nodes if available") \
589 \
590 product(uintx, NUMAInterleaveGranularity, 2*M, \
591 "Granularity to use for NUMA interleaving on Windows OS") \
592 \
593 product(bool, ForceNUMA, false, \
594 "Force NUMA optimizations on single-node/UMA systems") \
595 \
596 product(uintx, NUMAChunkResizeWeight, 20, \
597 "Percentage (0-100) used to weight the current sample when " \
598 "computing exponentially decaying average for " \
599 "AdaptiveNUMAChunkSizing") \
600 \
601 product(uintx, NUMASpaceResizeRate, 1*G, \
602 "Do not reallocate more than this amount per collection") \
603 \
604 product(bool, UseAdaptiveNUMAChunkSizing, true, \
605 "Enable adaptive chunk sizing for NUMA") \
606 \
607 product(bool, NUMAStats, false, \
608 "Print NUMA stats in detailed heap information") \
609 \
610 product(uintx, NUMAPageScanRate, 256, \
611 "Maximum number of pages to include in the page scan procedure") \
612 \
613 product_pd(bool, NeedsDeoptSuspend, \
614 "True for register window machines (sparc/ia64)") \
615 \
616 product(intx, UseSSE, 99, \
617 "Highest supported SSE instructions set on x86/x64") \
618 \
619 product(bool, UseAES, false, \
620 "Control whether AES instructions can be used on x86/x64") \
621 \
622 product(bool, UseSHA, false, \
623 "Control whether SHA instructions can be used on SPARC") \
624 \
625 product(uintx, LargePageSizeInBytes, 0, \
626 "Large page size (0 to let VM choose the page size)") \
627 \
628 product(uintx, LargePageHeapSizeThreshold, 128*M, \
629 "Use large pages if maximum heap is at least this big") \
630 \
631 product(bool, ForceTimeHighResolution, false, \
632 "Using high time resolution (for Win32 only)") \
633 \
634 develop(bool, TraceItables, false, \
635 "Trace initialization and use of itables") \
636 \
637 develop(bool, TracePcPatching, false, \
638 "Trace usage of frame::patch_pc") \
639 \
640 develop(bool, TraceJumps, false, \
641 "Trace assembly jumps in thread ring buffer") \
642 \
643 develop(bool, TraceRelocator, false, \
644 "Trace the bytecode relocator") \
645 \
646 develop(bool, TraceLongCompiles, false, \
647 "Print out every time compilation is longer than " \
648 "a given threshold") \
649 \
650 develop(bool, SafepointALot, false, \
651 "Generate a lot of safepoints. This works with " \
652 "GuaranteedSafepointInterval") \
653 \
654 product_pd(bool, BackgroundCompilation, \
655 "A thread requesting compilation is not blocked during " \
656 "compilation") \
657 \
658 product(bool, PrintVMQWaitTime, false, \
659 "Print out the waiting time in VM operation queue") \
660 \
661 develop(bool, NoYieldsInMicrolock, false, \
662 "Disable yields in microlock") \
663 \
664 develop(bool, TraceOopMapGeneration, false, \
665 "Show OopMapGeneration") \
666 \
667 product(bool, MethodFlushing, true, \
668 "Reclamation of zombie and not-entrant methods") \
669 \
670 develop(bool, VerifyStack, false, \
671 "Verify stack of each thread when it is entering a runtime call") \
672 \
673 diagnostic(bool, ForceUnreachable, false, \
674 "Make all non code cache addresses to be unreachable by " \
675 "forcing use of 64bit literal fixups") \
676 \
677 notproduct(bool, StressDerivedPointers, false, \
678 "Force scavenge when a derived pointer is detected on stack " \
679 "after rtm call") \
680 \
681 develop(bool, TraceDerivedPointers, false, \
682 "Trace traversal of derived pointers on stack") \
683 \
684 notproduct(bool, TraceCodeBlobStacks, false, \
685 "Trace stack-walk of codeblobs") \
686 \
687 product(bool, PrintJNIResolving, false, \
688 "Used to implement -v:jni") \
689 \
690 notproduct(bool, PrintRewrites, false, \
691 "Print methods that are being rewritten") \
692 \
693 product(bool, UseInlineCaches, true, \
694 "Use Inline Caches for virtual calls ") \
695 \
696 develop(bool, InlineArrayCopy, true, \
697 "Inline arraycopy native that is known to be part of " \
698 "base library DLL") \
699 \
700 develop(bool, InlineObjectHash, true, \
701 "Inline Object::hashCode() native that is known to be part " \
702 "of base library DLL") \
703 \
704 develop(bool, InlineNatives, true, \
705 "Inline natives that are known to be part of base library DLL") \
706 \
707 develop(bool, InlineMathNatives, true, \
708 "Inline SinD, CosD, etc.") \
709 \
710 develop(bool, InlineClassNatives, true, \
711 "Inline Class.isInstance, etc") \
712 \
713 develop(bool, InlineThreadNatives, true, \
714 "Inline Thread.currentThread, etc") \
715 \
716 develop(bool, InlineUnsafeOps, true, \
717 "Inline memory ops (native methods) from sun.misc.Unsafe") \
718 \
719 product(bool, CriticalJNINatives, true, \
720 "Check for critical JNI entry points") \
721 \
722 notproduct(bool, StressCriticalJNINatives, false, \
723 "Exercise register saving code in critical natives") \
724 \
725 product(bool, UseSSE42Intrinsics, false, \
726 "SSE4.2 versions of intrinsics") \
727 \
728 product(bool, UseAESIntrinsics, false, \
729 "Use intrinsics for AES versions of crypto") \
730 \
731 product(bool, UseSHA1Intrinsics, false, \
732 "Use intrinsics for SHA-1 crypto hash function") \
733 \
734 product(bool, UseSHA256Intrinsics, false, \
735 "Use intrinsics for SHA-224 and SHA-256 crypto hash functions") \
736 \
737 product(bool, UseSHA512Intrinsics, false, \
738 "Use intrinsics for SHA-384 and SHA-512 crypto hash functions") \
739 \
740 product(bool, UseCRC32Intrinsics, false, \
741 "use intrinsics for java.util.zip.CRC32") \
742 \
743 develop(bool, TraceCallFixup, false, \
744 "Trace all call fixups") \
745 \
746 develop(bool, DeoptimizeALot, false, \
747 "Deoptimize at every exit from the runtime system") \
748 \
749 notproduct(ccstrlist, DeoptimizeOnlyAt, "", \
750 "A comma separated list of bcis to deoptimize at") \
751 \
752 product(bool, DeoptimizeRandom, false, \
753 "Deoptimize random frames on random exit from the runtime system")\
754 \
755 notproduct(bool, ZombieALot, false, \
756 "Create zombies (non-entrant) at exit from the runtime system") \
757 \
758 product(bool, UnlinkSymbolsALot, false, \
759 "Unlink unreferenced symbols from the symbol table at safepoints")\
760 \
761 notproduct(bool, WalkStackALot, false, \
762 "Trace stack (no print) at every exit from the runtime system") \
763 \
764 product(bool, Debugging, false, \
765 "Set when executing debug methods in debug.cpp " \
766 "(to prevent triggering assertions)") \
767 \
768 notproduct(bool, StrictSafepointChecks, trueInDebug, \
769 "Enable strict checks that safepoints cannot happen for threads " \
770 "that use No_Safepoint_Verifier") \
771 \
772 notproduct(bool, VerifyLastFrame, false, \
773 "Verify oops on last frame on entry to VM") \
774 \
775 develop(bool, TraceHandleAllocation, false, \
776 "Print out warnings when suspiciously many handles are allocated")\
777 \
778 product(bool, UseCompilerSafepoints, true, \
779 "Stop at safepoints in compiled code") \
780 \
781 product(bool, FailOverToOldVerifier, true, \
782 "Fail over to old verifier when split verifier fails") \
783 \
784 develop(bool, ShowSafepointMsgs, false, \
785 "Show message about safepoint synchronization") \
786 \
787 product(bool, SafepointTimeout, false, \
788 "Time out and warn or fail after SafepointTimeoutDelay " \
789 "milliseconds if failed to reach safepoint") \
790 \
791 develop(bool, DieOnSafepointTimeout, false, \
792 "Die upon failure to reach safepoint (see SafepointTimeout)") \
793 \
794 /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \
795 /* typically, at most a few retries are needed */ \
796 product(intx, SuspendRetryCount, 50, \
797 "Maximum retry count for an external suspend request") \
798 \
799 product(intx, SuspendRetryDelay, 5, \
800 "Milliseconds to delay per retry (* current_retry_count)") \
801 \
802 product(bool, AssertOnSuspendWaitFailure, false, \
803 "Assert/Guarantee on external suspend wait failure") \
804 \
805 product(bool, TraceSuspendWaitFailures, false, \
806 "Trace external suspend wait failures") \
807 \
808 product(bool, MaxFDLimit, true, \
809 "Bump the number of file descriptors to maximum in Solaris") \
810 \
811 diagnostic(bool, LogEvents, true, \
812 "Enable the various ring buffer event logs") \
813 \
814 diagnostic(uintx, LogEventsBufferEntries, 10, \
815 "Number of ring buffer event logs") \
816 \
817 product(bool, BytecodeVerificationRemote, true, \
818 "Enable the Java bytecode verifier for remote classes") \
819 \
820 product(bool, BytecodeVerificationLocal, false, \
821 "Enable the Java bytecode verifier for local classes") \
822 \
823 develop(bool, ForceFloatExceptions, trueInDebug, \
824 "Force exceptions on FP stack under/overflow") \
825 \
826 develop(bool, VerifyStackAtCalls, false, \
827 "Verify that the stack pointer is unchanged after calls") \
828 \
829 develop(bool, TraceJavaAssertions, false, \
830 "Trace java language assertions") \
831 \
832 notproduct(bool, CheckAssertionStatusDirectives, false, \
833 "Temporary - see javaClasses.cpp") \
834 \
835 notproduct(bool, PrintMallocFree, false, \
836 "Trace calls to C heap malloc/free allocation") \
837 \
838 product(bool, PrintOopAddress, false, \
839 "Always print the location of the oop") \
840 \
841 notproduct(bool, VerifyCodeCache, false, \
842 "Verify code cache on memory allocation/deallocation") \
843 \
844 develop(bool, ZapDeadCompiledLocals, false, \
845 "Zap dead locals in compiler frames") \
846 \
847 notproduct(bool, ZapDeadLocalsOld, false, \
848 "Zap dead locals (old version, zaps all frames when " \
849 "entering the VM") \
850 \
851 notproduct(bool, CheckOopishValues, false, \
852 "Warn if value contains oop (requires ZapDeadLocals)") \
853 \
854 develop(bool, UseMallocOnly, false, \
855 "Use only malloc/free for allocation (no resource area/arena)") \
856 \
857 develop(bool, PrintMalloc, false, \
858 "Print all malloc/free calls") \
859 \
860 develop(bool, PrintMallocStatistics, false, \
861 "Print malloc/free statistics") \
862 \
863 develop(bool, ZapResourceArea, trueInDebug, \
864 "Zap freed resource/arena space with 0xABABABAB") \
865 \
866 notproduct(bool, ZapVMHandleArea, trueInDebug, \
867 "Zap freed VM handle space with 0xBCBCBCBC") \
868 \
869 develop(bool, ZapJNIHandleArea, trueInDebug, \
870 "Zap freed JNI handle space with 0xFEFEFEFE") \
871 \
872 notproduct(bool, ZapStackSegments, trueInDebug, \
873 "Zap allocated/freed stack segments with 0xFADFADED") \
874 \
875 develop(bool, ZapUnusedHeapArea, trueInDebug, \
876 "Zap unused heap space with 0xBAADBABE") \
877 \
878 develop(bool, TraceZapUnusedHeapArea, false, \
879 "Trace zapping of unused heap space") \
880 \
881 develop(bool, CheckZapUnusedHeapArea, false, \
882 "Check zapping of unused heap space") \
883 \
884 develop(bool, ZapFillerObjects, trueInDebug, \
885 "Zap filler objects with 0xDEAFBABE") \
886 \
887 develop(bool, PrintVMMessages, true, \
888 "Print VM messages on console") \
889 \
890 product(bool, PrintGCApplicationConcurrentTime, false, \
891 "Print the time the application has been running") \
892 \
893 product(bool, PrintGCApplicationStoppedTime, false, \
894 "Print the time the application has been stopped") \
895 \
896 diagnostic(bool, VerboseVerification, false, \
897 "Display detailed verification details") \
898 \
899 notproduct(uintx, ErrorHandlerTest, 0, \
900 "If > 0, provokes an error after VM initialization; the value " \
901 "determines which error to provoke. See test_error_handler() " \
902 "in debug.cpp.") \
903 \
904 develop(bool, Verbose, false, \
905 "Print additional debugging information from other modes") \
906 \
907 develop(bool, PrintMiscellaneous, false, \
908 "Print uncategorized debugging information (requires +Verbose)") \
909 \
910 develop(bool, WizardMode, false, \
911 "Print much more debugging information") \
912 \
913 product(bool, ShowMessageBoxOnError, false, \
914 "Keep process alive on VM fatal error") \
915 \
916 product(bool, CreateMinidumpOnCrash, false, \
917 "Create minidump on VM fatal error") \
918 \
919 product_pd(bool, UseOSErrorReporting, \
920 "Let VM fatal error propagate to the OS (ie. WER on Windows)") \
921 \
922 product(bool, SuppressFatalErrorMessage, false, \
923 "Report NO fatal error message (avoid deadlock)") \
924 \
925 product(ccstrlist, OnError, "", \
926 "Run user-defined commands on fatal error; see VMError.cpp " \
927 "for examples") \
928 \
929 product(ccstrlist, OnOutOfMemoryError, "", \
930 "Run user-defined commands on first java.lang.OutOfMemoryError") \
931 \
932 manageable(bool, HeapDumpBeforeFullGC, false, \
933 "Dump heap to file before any major stop-the-world GC") \
934 \
935 manageable(bool, HeapDumpAfterFullGC, false, \
936 "Dump heap to file after any major stop-the-world GC") \
937 \
938 manageable(bool, HeapDumpOnOutOfMemoryError, false, \
939 "Dump heap to file when java.lang.OutOfMemoryError is thrown") \
940 \
941 manageable(ccstr, HeapDumpPath, NULL, \
942 "When HeapDumpOnOutOfMemoryError is on, the path (filename or " \
943 "directory) of the dump file (defaults to java_pid<pid>.hprof " \
944 "in the working directory)") \
945 \
946 develop(uintx, SegmentedHeapDumpThreshold, 2*G, \
947 "Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) " \
948 "when the heap usage is larger than this") \
949 \
950 develop(uintx, HeapDumpSegmentSize, 1*G, \
951 "Approximate segment size when generating a segmented heap dump") \
952 \
953 develop(bool, BreakAtWarning, false, \
954 "Execute breakpoint upon encountering VM warning") \
955 \
956 develop(bool, TraceVMOperation, false, \
957 "Trace VM operations") \
958 \
959 develop(bool, UseFakeTimers, false, \
960 "Tell whether the VM should use system time or a fake timer") \
961 \
962 product(ccstr, NativeMemoryTracking, "off", \
963 "Native memory tracking options") \
964 \
965 diagnostic(bool, PrintNMTStatistics, false, \
966 "Print native memory tracking summary data if it is on") \
967 \
968 diagnostic(bool, LogCompilation, false, \
969 "Log compilation activity in detail to LogFile") \
970 \
971 product(bool, PrintCompilation, false, \
972 "Print compilations") \
973 \
974 diagnostic(bool, TraceNMethodInstalls, false, \
975 "Trace nmethod installation") \
976 \
977 diagnostic(intx, ScavengeRootsInCode, 2, \
978 "0: do not allow scavengable oops in the code cache; " \
979 "1: allow scavenging from the code cache; " \
980 "2: emit as many constants as the compiler can see") \
981 \
982 product(bool, AlwaysRestoreFPU, false, \
983 "Restore the FPU control word after every JNI call (expensive)") \
984 \
985 diagnostic(bool, PrintCompilation2, false, \
986 "Print additional statistics per compilation") \
987 \
988 diagnostic(bool, PrintAdapterHandlers, false, \
989 "Print code generated for i2c/c2i adapters") \
990 \
991 diagnostic(bool, VerifyAdapterCalls, trueInDebug, \
992 "Verify that i2c/c2i adapters are called properly") \
993 \
994 develop(bool, VerifyAdapterSharing, false, \
995 "Verify that the code for shared adapters is the equivalent") \
996 \
997 diagnostic(bool, PrintAssembly, false, \
998 "Print assembly code (using external disassembler.so)") \
999 \
1000 diagnostic(ccstr, PrintAssemblyOptions, NULL, \
1001 "Print options string passed to disassembler.so") \
1002 \
1003 diagnostic(bool, PrintNMethods, false, \
1004 "Print assembly code for nmethods when generated") \
1005 \
1006 diagnostic(bool, PrintNativeNMethods, false, \
1007 "Print assembly code for native nmethods when generated") \
1008 \
1009 develop(bool, PrintDebugInfo, false, \
1010 "Print debug information for all nmethods when generated") \
1011 \
1012 develop(bool, PrintRelocations, false, \
1013 "Print relocation information for all nmethods when generated") \
1014 \
1015 develop(bool, PrintDependencies, false, \
1016 "Print dependency information for all nmethods when generated") \
1017 \
1018 develop(bool, PrintExceptionHandlers, false, \
1019 "Print exception handler tables for all nmethods when generated") \
1020 \
1021 develop(bool, StressCompiledExceptionHandlers, false, \
1022 "Exercise compiled exception handlers") \
1023 \
1024 develop(bool, InterceptOSException, false, \
1025 "Start debugger when an implicit OS (e.g. NULL) " \
1026 "exception happens") \
1027 \
1028 product(bool, PrintCodeCache, false, \
1029 "Print the code cache memory usage when exiting") \
1030 \
1031 develop(bool, PrintCodeCache2, false, \
1032 "Print detailed usage information on the code cache when exiting")\
1033 \
1034 product(bool, PrintCodeCacheOnCompilation, false, \
1035 "Print the code cache memory usage each time a method is " \
1036 "compiled") \
1037 \
1038 diagnostic(bool, PrintStubCode, false, \
1039 "Print generated stub code") \
1040 \
1041 product(bool, StackTraceInThrowable, true, \
1042 "Collect backtrace in throwable when exception happens") \
1043 \
1044 product(bool, OmitStackTraceInFastThrow, true, \
1045 "Omit backtraces for some 'hot' exceptions in optimized code") \
1046 \
1047 product(bool, ProfilerPrintByteCodeStatistics, false, \
1048 "Print bytecode statistics when dumping profiler output") \
1049 \
1050 product(bool, ProfilerRecordPC, false, \
1051 "Collect ticks for each 16 byte interval of compiled code") \
1052 \
1053 product(bool, ProfileVM, false, \
1054 "Profile ticks that fall within VM (either in the VM Thread " \
1055 "or VM code called through stubs)") \
1056 \
1057 product(bool, ProfileIntervals, false, \
1058 "Print profiles for each interval (see ProfileIntervalsTicks)") \
1059 \
1060 notproduct(bool, ProfilerCheckIntervals, false, \
1061 "Collect and print information on spacing of profiler ticks") \
1062 \
1063 develop(bool, PrintJVMWarnings, false, \
1064 "Print warnings for unimplemented JVM functions") \
1065 \
1066 product(bool, PrintWarnings, true, \
1067 "Print JVM warnings to output stream") \
1068 \
1069 notproduct(uintx, WarnOnStalledSpinLock, 0, \
1070 "Print warnings for stalled SpinLocks") \
1071 \
1072 product(bool, RegisterFinalizersAtInit, true, \
1073 "Register finalizable objects at end of Object.<init> or " \
1074 "after allocation") \
1075 \
1076 develop(bool, RegisterReferences, true, \
1077 "Tell whether the VM should register soft/weak/final/phantom " \
1078 "references") \
1079 \
1080 develop(bool, IgnoreRewrites, false, \
1081 "Suppress rewrites of bytecodes in the oopmap generator. " \
1082 "This is unsafe!") \
1083 \
1084 develop(bool, PrintCodeCacheExtension, false, \
1085 "Print extension of code cache") \
1086 \
1087 develop(bool, UsePrivilegedStack, true, \
1088 "Enable the security JVM functions") \
1089 \
1090 develop(bool, ProtectionDomainVerification, true, \
1091 "Verify protection domain before resolution in system dictionary")\
1092 \
1093 product(bool, ClassUnloading, true, \
1094 "Do unloading of classes") \
1095 \
1096 product(bool, ClassUnloadingWithConcurrentMark, true, \
1097 "Do unloading of classes with a concurrent marking cycle") \
1098 \
1099 develop(bool, DisableStartThread, false, \
1100 "Disable starting of additional Java threads " \
1101 "(for debugging only)") \
1102 \
1103 develop(bool, MemProfiling, false, \
1104 "Write memory usage profiling to log file") \
1105 \
1106 notproduct(bool, PrintSystemDictionaryAtExit, false, \
1107 "Print the system dictionary at exit") \
1108 \
1109 experimental(intx, PredictedLoadedClassCount, 0, \
1110 "Experimental: Tune loaded class cache starting size") \
1111 \
1112 diagnostic(bool, UnsyncloadClass, false, \
1113 "Unstable: VM calls loadClass unsynchronized. Custom " \
1114 "class loader must call VM synchronized for findClass " \
1115 "and defineClass.") \
1116 \
1117 product(bool, AlwaysLockClassLoader, false, \
1118 "Require the VM to acquire the class loader lock before calling " \
1119 "loadClass() even for class loaders registering " \
1120 "as parallel capable") \
1121 \
1122 product(bool, AllowParallelDefineClass, false, \
1123 "Allow parallel defineClass requests for class loaders " \
1124 "registering as parallel capable") \
1125 \
1126 product(bool, MustCallLoadClassInternal, false, \
1127 "Call loadClassInternal() rather than loadClass()") \
1128 \
1129 product_pd(bool, DontYieldALot, \
1130 "Throw away obvious excess yield calls") \
1131 \
1132 product_pd(bool, ConvertSleepToYield, \
1133 "Convert sleep(0) to thread yield " \
1134 "(may be off for Solaris to improve GUI)") \
1135 \
1136 product(bool, ConvertYieldToSleep, false, \
1137 "Convert yield to a sleep of MinSleepInterval to simulate Win32 " \
1138 "behavior") \
1139 \
1140 product(bool, UseBoundThreads, true, \
1141 "Bind user level threads to kernel threads (for Solaris only)") \
1142 \
1143 develop(bool, UseDetachedThreads, true, \
1144 "Use detached threads that are recycled upon termination " \
1145 "(for Solaris only)") \
1146 \
1147 product(bool, UseLWPSynchronization, true, \
1148 "Use LWP-based instead of libthread-based synchronization " \
1149 "(SPARC only)") \
1150 \
1151 experimental(ccstr, SyncKnobs, NULL, \
1152 "(Unstable) Various monitor synchronization tunables") \
1153 \
1154 experimental(intx, EmitSync, 0, \
1155 "(Unsafe, Unstable) " \
1156 "Control emission of inline sync fast-path code") \
1157 \
1158 product(intx, MonitorBound, 0, "Bound Monitor population") \
1159 \
1160 product(bool, MonitorInUseLists, false, "Track Monitors for Deflation") \
1161 \
1162 experimental(intx, SyncFlags, 0, "(Unsafe, Unstable) " \
1163 "Experimental Sync flags") \
1164 \
1165 experimental(intx, SyncVerbose, 0, "(Unstable)") \
1166 \
1167 experimental(intx, ClearFPUAtPark, 0, "(Unsafe, Unstable)") \
1168 \
1169 experimental(intx, hashCode, 5, \
1170 "(Unstable) select hashCode generation algorithm") \
1171 \
1172 experimental(intx, WorkAroundNPTLTimedWaitHang, 1, \
1173 "(Unstable, Linux-specific) " \
1174 "avoid NPTL-FUTEX hang pthread_cond_timedwait") \
1175 \
1176 product(bool, FilterSpuriousWakeups, true, \
1177 "When true prevents OS-level spurious, or premature, wakeups " \
1178 "from Object.wait (Ignored for Windows)") \
1179 \
1180 product(intx, NativeMonitorTimeout, -1, "(Unstable)") \
1181 \
1182 product(intx, NativeMonitorFlags, 0, "(Unstable)") \
1183 \
1184 product(intx, NativeMonitorSpinLimit, 20, "(Unstable)") \
1185 \
1186 develop(bool, UsePthreads, false, \
1187 "Use pthread-based instead of libthread-based synchronization " \
1188 "(SPARC only)") \
1189 \
1190 product(bool, AdjustConcurrency, false, \
1191 "Call thr_setconcurrency at thread creation time to avoid " \
1192 "LWP starvation on MP systems (for Solaris Only)") \
1193 \
1194 product(bool, ReduceSignalUsage, false, \
1195 "Reduce the use of OS signals in Java and/or the VM") \
1196 \
1197 develop_pd(bool, ShareVtableStubs, \
1198 "Share vtable stubs (smaller code but worse branch prediction") \
1199 \
1200 develop(bool, LoadLineNumberTables, true, \
1201 "Tell whether the class file parser loads line number tables") \
1202 \
1203 develop(bool, LoadLocalVariableTables, true, \
1204 "Tell whether the class file parser loads local variable tables") \
1205 \
1206 develop(bool, LoadLocalVariableTypeTables, true, \
1207 "Tell whether the class file parser loads local variable type" \
1208 "tables") \
1209 \
1210 product(bool, AllowUserSignalHandlers, false, \
1211 "Do not complain if the application installs signal handlers " \
1212 "(Solaris & Linux only)") \
1213 \
1214 product(bool, UseSignalChaining, true, \
1215 "Use signal-chaining to invoke signal handlers installed " \
1216 "by the application (Solaris & Linux only)") \
1217 \
1218 product(bool, UseAltSigs, false, \
1219 "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \
1220 "internal signals (Solaris only)") \
1221 \
1222 product(bool, AllowJNIEnvProxy, false, \
1223 "Allow JNIEnv proxies for jdbx") \
1224 \
1225 product(bool, JNIDetachReleasesMonitors, true, \
1226 "JNI DetachCurrentThread releases monitors owned by thread") \
1227 \
1228 product(bool, RestoreMXCSROnJNICalls, false, \
1229 "Restore MXCSR when returning from JNI calls") \
1230 \
1231 product(bool, CheckJNICalls, false, \
1232 "Verify all arguments to JNI calls") \
1233 \
1234 product(bool, UseFastJNIAccessors, true, \
1235 "Use optimized versions of Get<Primitive>Field") \
1236 \
1237 product(intx, MaxJNILocalCapacity, 65536, \
1238 "Maximum allowable local JNI handle capacity to " \
1239 "EnsureLocalCapacity() and PushLocalFrame(), " \
1240 "where <= 0 is unlimited, default: 65536") \
1241 \
1242 product(bool, EagerXrunInit, false, \
1243 "Eagerly initialize -Xrun libraries; allows startup profiling, " \
1244 "but not all -Xrun libraries may support the state of the VM " \
1245 "at this time") \
1246 \
1247 product(bool, PreserveAllAnnotations, false, \
1248 "Preserve RuntimeInvisibleAnnotations as well " \
1249 "as RuntimeVisibleAnnotations") \
1250 \
1251 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \
1252 "Number of OutOfMemoryErrors preallocated with backtrace") \
1253 \
1254 product(bool, LazyBootClassLoader, true, \
1255 "Enable/disable lazy opening of boot class path entries") \
1256 \
1257 product(bool, UseXMMForArrayCopy, false, \
1258 "Use SSE2 MOVQ instruction for Arraycopy") \
1259 \
1260 product(intx, FieldsAllocationStyle, 1, \
1261 "0 - type based with oops first, 1 - with oops last, " \
1262 "2 - oops in super and sub classes are together") \
1263 \
1264 product(bool, CompactFields, true, \
1265 "Allocate nonstatic fields in gaps between previous fields") \
1266 \
1267 notproduct(bool, PrintFieldLayout, false, \
1268 "Print field layout for each class") \
1269 \
1270 product(intx, ContendedPaddingWidth, 128, \
1271 "How many bytes to pad the fields/classes marked @Contended with")\
1272 \
1273 product(bool, EnableContended, true, \
1274 "Enable @Contended annotation support") \
1275 \
1276 product(bool, RestrictContended, true, \
1277 "Restrict @Contended to trusted classes") \
1278 \
1279 product(bool, UseBiasedLocking, true, \
1280 "Enable biased locking in JVM") \
1281 \
1282 product(intx, BiasedLockingStartupDelay, 4000, \
1283 "Number of milliseconds to wait before enabling biased locking") \
1284 \
1285 diagnostic(bool, PrintBiasedLockingStatistics, false, \
1286 "Print statistics of biased locking in JVM") \
1287 \
1288 product(intx, BiasedLockingBulkRebiasThreshold, 20, \
1289 "Threshold of number of revocations per type to try to " \
1290 "rebias all objects in the heap of that type") \
1291 \
1292 product(intx, BiasedLockingBulkRevokeThreshold, 40, \
1293 "Threshold of number of revocations per type to permanently " \
1294 "revoke biases of all objects in the heap of that type") \
1295 \
1296 product(intx, BiasedLockingDecayTime, 25000, \
1297 "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \
1298 "type after previous bulk rebias") \
1299 \
1300 /* tracing */ \
1301 \
1302 notproduct(bool, TraceRuntimeCalls, false, \
1303 "Trace run-time calls") \
1304 \
1305 develop(bool, TraceJNICalls, false, \
1306 "Trace JNI calls") \
1307 \
1308 develop(bool, StressRewriter, false, \
1309 "Stress linktime bytecode rewriting") \
1310 \
1311 notproduct(bool, TraceJVMCalls, false, \
1312 "Trace JVM calls") \
1313 \
1314 product(ccstr, TraceJVMTI, NULL, \
1315 "Trace flags for JVMTI functions and events") \
1316 \
1317 /* This option can change an EMCP method into an obsolete method. */ \
1318 /* This can affect tests that except specific methods to be EMCP. */ \
1319 /* This option should be used with caution. */ \
1320 product(bool, StressLdcRewrite, false, \
1321 "Force ldc -> ldc_w rewrite during RedefineClasses") \
1322 \
1323 product(intx, TraceRedefineClasses, 0, \
1324 "Trace level for JVMTI RedefineClasses") \
1325 \
1326 develop(bool, StressMethodComparator, false, \
1327 "Run the MethodComparator on all loaded methods") \
1328 \
1329 /* change to false by default sometime after Mustang */ \
1330 product(bool, VerifyMergedCPBytecodes, true, \
1331 "Verify bytecodes after RedefineClasses constant pool merging") \
1332 \
1333 develop(bool, TraceJNIHandleAllocation, false, \
1334 "Trace allocation/deallocation of JNI handle blocks") \
1335 \
1336 develop(bool, TraceThreadEvents, false, \
1337 "Trace all thread events") \
1338 \
1339 develop(bool, TraceBytecodes, false, \
1340 "Trace bytecode execution") \
1341 \
1342 develop(bool, TraceClassInitialization, false, \
1343 "Trace class initialization") \
1344 \
1345 develop(bool, TraceExceptions, false, \
1346 "Trace exceptions") \
1347 \
1348 develop(bool, TraceICs, false, \
1349 "Trace inline cache changes") \
1350 \
1351 notproduct(bool, TraceInvocationCounterOverflow, false, \
1352 "Trace method invocation counter overflow") \
1353 \
1354 develop(bool, TraceInlineCacheClearing, false, \
1355 "Trace clearing of inline caches in nmethods") \
1356 \
1357 develop(bool, TraceDependencies, false, \
1358 "Trace dependencies") \
1359 \
1360 develop(bool, VerifyDependencies, trueInDebug, \
1361 "Exercise and verify the compilation dependency mechanism") \
1362 \
1363 develop(bool, TraceNewOopMapGeneration, false, \
1364 "Trace OopMapGeneration") \
1365 \
1366 develop(bool, TraceNewOopMapGenerationDetailed, false, \
1367 "Trace OopMapGeneration: print detailed cell states") \
1368 \
1369 develop(bool, TimeOopMap, false, \
1370 "Time calls to GenerateOopMap::compute_map() in sum") \
1371 \
1372 develop(bool, TimeOopMap2, false, \
1373 "Time calls to GenerateOopMap::compute_map() individually") \
1374 \
1375 develop(bool, TraceMonitorMismatch, false, \
1376 "Trace monitor matching failures during OopMapGeneration") \
1377 \
1378 develop(bool, TraceOopMapRewrites, false, \
1379 "Trace rewriting of method oops during oop map generation") \
1380 \
1381 develop(bool, TraceSafepoint, false, \
1382 "Trace safepoint operations") \
1383 \
1384 develop(bool, TraceICBuffer, false, \
1385 "Trace usage of IC buffer") \
1386 \
1387 develop(bool, TraceCompiledIC, false, \
1388 "Trace changes of compiled IC") \
1389 \
1390 notproduct(bool, TraceZapDeadLocals, false, \
1391 "Trace zapping dead locals") \
1392 \
1393 develop(bool, TraceStartupTime, false, \
1394 "Trace setup time") \
1395 \
1396 develop(bool, TraceProtectionDomainVerification, false, \
1397 "Trace protection domain verification") \
1398 \
1399 develop(bool, TraceClearedExceptions, false, \
1400 "Print when an exception is forcibly cleared") \
1401 \
1402 product(bool, TraceClassResolution, false, \
1403 "Trace all constant pool resolutions (for debugging)") \
1404 \
1405 product(bool, TraceBiasedLocking, false, \
1406 "Trace biased locking in JVM") \
1407 \
1408 product(bool, TraceMonitorInflation, false, \
1409 "Trace monitor inflation in JVM") \
1410 \
1411 /* gc */ \
1412 \
1413 product(bool, UseSerialGC, false, \
1414 "Use the Serial garbage collector") \
1415 \
1416 product(bool, UseG1GC, false, \
1417 "Use the Garbage-First garbage collector") \
1418 \
1419 product(bool, UseParallelGC, false, \
1420 "Use the Parallel Scavenge garbage collector") \
1421 \
1422 product(bool, UseParallelOldGC, false, \
1423 "Use the Parallel Old garbage collector") \
1424 \
1425 product(uintx, HeapMaximumCompactionInterval, 20, \
1426 "How often should we maximally compact the heap (not allowing " \
1427 "any dead space)") \
1428 \
1429 product(uintx, HeapFirstMaximumCompactionCount, 3, \
1430 "The collection count for the first maximum compaction") \
1431 \
1432 product(bool, UseMaximumCompactionOnSystemGC, true, \
1433 "Use maximum compaction in the Parallel Old garbage collector " \
1434 "for a system GC") \
1435 \
1436 product(uintx, ParallelOldDeadWoodLimiterMean, 50, \
1437 "The mean used by the parallel compact dead wood " \
1438 "limiter (a number between 0-100)") \
1439 \
1440 product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \
1441 "The standard deviation used by the parallel compact dead wood " \
1442 "limiter (a number between 0-100)") \
1443 \
1444 product(uintx, ParallelGCThreads, 0, \
1445 "Number of parallel threads parallel gc will use") \
1446 \
1447 product(bool, UseDynamicNumberOfGCThreads, false, \
1448 "Dynamically choose the number of parallel threads " \
1449 "parallel gc will use") \
1450 \
1451 diagnostic(bool, ForceDynamicNumberOfGCThreads, false, \
1452 "Force dynamic selection of the number of " \
1453 "parallel threads parallel gc will use to aid debugging") \
1454 \
1455 product(uintx, HeapSizePerGCThread, ScaleForWordSize(64*M), \
1456 "Size of heap (bytes) per GC thread used in calculating the " \
1457 "number of GC threads") \
1458 \
1459 product(bool, TraceDynamicGCThreads, false, \
1460 "Trace the dynamic GC thread usage") \
1461 \
1462 develop(bool, ParallelOldGCSplitALot, false, \
1463 "Provoke splitting (copying data from a young gen space to " \
1464 "multiple destination spaces)") \
1465 \
1466 develop(uintx, ParallelOldGCSplitInterval, 3, \
1467 "How often to provoke splitting a young gen space") \
1468 \
1469 product(uintx, ConcGCThreads, 0, \
1470 "Number of threads concurrent gc will use") \
1471 \
1472 product(uintx, YoungPLABSize, 4096, \
1473 "Size of young gen promotion LAB's (in HeapWords)") \
1474 \
1475 product(uintx, OldPLABSize, 1024, \
1476 "Size of old gen promotion LAB's (in HeapWords)") \
1477 \
1478 product(uintx, GCTaskTimeStampEntries, 200, \
1479 "Number of time stamp entries per gc worker thread") \
1480 \
1481 product(bool, AlwaysTenure, false, \
1482 "Always tenure objects in eden (ParallelGC only)") \
1483 \
1484 product(bool, NeverTenure, false, \
1485 "Never tenure objects in eden, may tenure on overflow " \
1486 "(ParallelGC only)") \
1487 \
1488 product(bool, ScavengeBeforeFullGC, true, \
1489 "Scavenge youngest generation before each full GC.") \
1490 \
1491 develop(bool, ScavengeWithObjectsInToSpace, false, \
1492 "Allow scavenges to occur when to-space contains objects") \
1493 \
1494 product(bool, UseConcMarkSweepGC, false, \
1495 "Use Concurrent Mark-Sweep GC in the old generation") \
1496 \
1497 product(bool, ExplicitGCInvokesConcurrent, false, \
1498 "A System.gc() request invokes a concurrent collection; " \
1499 "(effective only when UseConcMarkSweepGC)") \
1500 \
1501 product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \
1502 "A System.gc() request invokes a concurrent collection and " \
1503 "also unloads classes during such a concurrent gc cycle " \
1504 "(effective only when UseConcMarkSweepGC)") \
1505 \
1506 product(bool, GCLockerInvokesConcurrent, false, \
1507 "The exit of a JNI critical section necessitating a scavenge, " \
1508 "also kicks off a background concurrent collection") \
1509 \
1510 product(uintx, GCLockerEdenExpansionPercent, 5, \
1511 "How much the GC can expand the eden by while the GC locker " \
1512 "is active (as a percentage)") \
1513 \
1514 diagnostic(intx, GCLockerRetryAllocationCount, 2, \
1515 "Number of times to retry allocations when " \
1516 "blocked by the GC locker") \
1517 \
1518 develop(bool, UseCMSAdaptiveFreeLists, true, \
1519 "Use adaptive free lists in the CMS generation") \
1520 \
1521 develop(bool, UseAsyncConcMarkSweepGC, true, \
1522 "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\
1523 \
1524 develop(bool, RotateCMSCollectionTypes, false, \
1525 "Rotate the CMS collections among concurrent and STW") \
1526 \
1527 product(bool, UseCMSBestFit, true, \
1528 "Use CMS best fit allocation strategy") \
1529 \
1530 product(bool, UseCMSCollectionPassing, true, \
1531 "Use passing of collection from background to foreground") \
1532 \
1533 product(bool, UseParNewGC, false, \
1534 "Use parallel threads in the new generation") \
1535 \
1536 product(bool, ParallelGCVerbose, false, \
1537 "Verbose output for parallel gc") \
1538 \
1539 product(uintx, ParallelGCBufferWastePct, 10, \
1540 "Wasted fraction of parallel allocation buffer") \
1541 \
1542 diagnostic(bool, ParallelGCRetainPLAB, false, \
1543 "Retain parallel allocation buffers across scavenges; " \
1544 "it is disabled because this currently conflicts with " \
1545 "parallel card scanning under certain conditions.") \
1546 \
1547 product(uintx, TargetPLABWastePct, 10, \
1548 "Target wasted space in last buffer as percent of overall " \
1549 "allocation") \
1550 \
1551 product(uintx, PLABWeight, 75, \
1552 "Percentage (0-100) used to weight the current sample when " \
1553 "computing exponentially decaying average for ResizePLAB") \
1554 \
1555 product(bool, ResizePLAB, true, \
1556 "Dynamically resize (survivor space) promotion LAB's") \
1557 \
1558 product(bool, PrintPLAB, false, \
1559 "Print (survivor space) promotion LAB's sizing decisions") \
1560 \
1561 product(intx, ParGCArrayScanChunk, 50, \
1562 "Scan a subset of object array and push remainder, if array is " \
1563 "bigger than this") \
1564 \
1565 product(bool, ParGCUseLocalOverflow, false, \
1566 "Instead of a global overflow list, use local overflow stacks") \
1567 \
1568 product(bool, ParGCTrimOverflow, true, \
1569 "Eagerly trim the local overflow lists " \
1570 "(when ParGCUseLocalOverflow)") \
1571 \
1572 notproduct(bool, ParGCWorkQueueOverflowALot, false, \
1573 "Simulate work queue overflow in ParNew") \
1574 \
1575 notproduct(uintx, ParGCWorkQueueOverflowInterval, 1000, \
1576 "An `interval' counter that determines how frequently " \
1577 "we simulate overflow; a smaller number increases frequency") \
1578 \
1579 product(uintx, ParGCDesiredObjsFromOverflowList, 20, \
1580 "The desired number of objects to claim from the overflow list") \
1581 \
1582 diagnostic(uintx, ParGCStridesPerThread, 2, \
1583 "The number of strides per worker thread that we divide up the " \
1584 "card table scanning work into") \
1585 \
1586 diagnostic(intx, ParGCCardsPerStrideChunk, 256, \
1587 "The number of cards in each chunk of the parallel chunks used " \
1588 "during card table scanning") \
1589 \
1590 product(uintx, CMSParPromoteBlocksToClaim, 16, \
1591 "Number of blocks to attempt to claim when refilling CMS LAB's " \
1592 "for parallel GC") \
1593 \
1594 product(uintx, OldPLABWeight, 50, \
1595 "Percentage (0-100) used to weight the current sample when " \
1596 "computing exponentially decaying average for resizing " \
1597 "CMSParPromoteBlocksToClaim") \
1598 \
1599 product(bool, ResizeOldPLAB, true, \
1600 "Dynamically resize (old gen) promotion LAB's") \
1601 \
1602 product(bool, PrintOldPLAB, false, \
1603 "Print (old gen) promotion LAB's sizing decisions") \
1604 \
1605 product(uintx, CMSOldPLABMin, 16, \
1606 "Minimum size of CMS gen promotion LAB caches per worker " \
1607 "per block size") \
1608 \
1609 product(uintx, CMSOldPLABMax, 1024, \
1610 "Maximum size of CMS gen promotion LAB caches per worker " \
1611 "per block size") \
1612 \
1613 product(uintx, CMSOldPLABNumRefills, 4, \
1614 "Nominal number of refills of CMS gen promotion LAB cache " \
1615 "per worker per block size") \
1616 \
1617 product(bool, CMSOldPLABResizeQuicker, false, \
1618 "React on-the-fly during a scavenge to a sudden " \
1619 "change in block demand rate") \
1620 \
1621 product(uintx, CMSOldPLABToleranceFactor, 4, \
1622 "The tolerance of the phase-change detector for on-the-fly " \
1623 "PLAB resizing during a scavenge") \
1624 \
1625 product(uintx, CMSOldPLABReactivityFactor, 2, \
1626 "The gain in the feedback loop for on-the-fly PLAB resizing " \
1627 "during a scavenge") \
1628 \
1629 product(bool, AlwaysPreTouch, false, \
1630 "Force all freshly committed pages to be pre-touched") \
1631 \
1632 product_pd(uintx, CMSYoungGenPerWorker, \
1633 "The maximum size of young gen chosen by default per GC worker " \
1634 "thread available") \
1635 \
1636 product(bool, CMSIncrementalMode, false, \
1637 "Whether CMS GC should operate in \"incremental\" mode") \
1638 \
1639 product(uintx, CMSIncrementalDutyCycle, 10, \
1640 "Percentage (0-100) of CMS incremental mode duty cycle. If " \
1641 "CMSIncrementalPacing is enabled, then this is just the initial " \
1642 "value.") \
1643 \
1644 product(bool, CMSIncrementalPacing, true, \
1645 "Whether the CMS incremental mode duty cycle should be " \
1646 "automatically adjusted") \
1647 \
1648 product(uintx, CMSIncrementalDutyCycleMin, 0, \
1649 "Minimum percentage (0-100) of the CMS incremental duty cycle " \
1650 "used when CMSIncrementalPacing is enabled") \
1651 \
1652 product(uintx, CMSIncrementalSafetyFactor, 10, \
1653 "Percentage (0-100) used to add conservatism when computing the " \
1654 "duty cycle") \
1655 \
1656 product(uintx, CMSIncrementalOffset, 0, \
1657 "Percentage (0-100) by which the CMS incremental mode duty cycle "\
1658 "is shifted to the right within the period between young GCs") \
1659 \
1660 product(uintx, CMSExpAvgFactor, 50, \
1661 "Percentage (0-100) used to weight the current sample when " \
1662 "computing exponential averages for CMS statistics") \
1663 \
1664 product(uintx, CMS_FLSWeight, 75, \
1665 "Percentage (0-100) used to weight the current sample when " \
1666 "computing exponentially decaying averages for CMS FLS " \
1667 "statistics") \
1668 \
1669 product(uintx, CMS_FLSPadding, 1, \
1670 "The multiple of deviation from mean to use for buffering " \
1671 "against volatility in free list demand") \
1672 \
1673 product(uintx, FLSCoalescePolicy, 2, \
1674 "CMS: aggressiveness level for coalescing, increasing " \
1675 "from 0 to 4") \
1676 \
1677 product(bool, FLSAlwaysCoalesceLarge, false, \
1678 "CMS: larger free blocks are always available for coalescing") \
1679 \
1680 product(double, FLSLargestBlockCoalesceProximity, 0.99, \
1681 "CMS: the smaller the percentage the greater the coalescing " \
1682 "force") \
1683 \
1684 product(double, CMSSmallCoalSurplusPercent, 1.05, \
1685 "CMS: the factor by which to inflate estimated demand of small " \
1686 "block sizes to prevent coalescing with an adjoining block") \
1687 \
1688 product(double, CMSLargeCoalSurplusPercent, 0.95, \
1689 "CMS: the factor by which to inflate estimated demand of large " \
1690 "block sizes to prevent coalescing with an adjoining block") \
1691 \
1692 product(double, CMSSmallSplitSurplusPercent, 1.10, \
1693 "CMS: the factor by which to inflate estimated demand of small " \
1694 "block sizes to prevent splitting to supply demand for smaller " \
1695 "blocks") \
1696 \
1697 product(double, CMSLargeSplitSurplusPercent, 1.00, \
1698 "CMS: the factor by which to inflate estimated demand of large " \
1699 "block sizes to prevent splitting to supply demand for smaller " \
1700 "blocks") \
1701 \
1702 product(bool, CMSExtrapolateSweep, false, \
1703 "CMS: cushion for block demand during sweep") \
1704 \
1705 product(uintx, CMS_SweepWeight, 75, \
1706 "Percentage (0-100) used to weight the current sample when " \
1707 "computing exponentially decaying average for inter-sweep " \
1708 "duration") \
1709 \
1710 product(uintx, CMS_SweepPadding, 1, \
1711 "The multiple of deviation from mean to use for buffering " \
1712 "against volatility in inter-sweep duration") \
1713 \
1714 product(uintx, CMS_SweepTimerThresholdMillis, 10, \
1715 "Skip block flux-rate sampling for an epoch unless inter-sweep " \
1716 "duration exceeds this threshold in milliseconds") \
1717 \
1718 develop(bool, CMSTraceIncrementalMode, false, \
1719 "Trace CMS incremental mode") \
1720 \
1721 develop(bool, CMSTraceIncrementalPacing, false, \
1722 "Trace CMS incremental mode pacing computation") \
1723 \
1724 develop(bool, CMSTraceThreadState, false, \
1725 "Trace the CMS thread state (enable the trace_state() method)") \
1726 \
1727 product(bool, CMSClassUnloadingEnabled, true, \
1728 "Whether class unloading enabled when using CMS GC") \
1729 \
1730 product(uintx, CMSClassUnloadingMaxInterval, 0, \
1731 "When CMS class unloading is enabled, the maximum CMS cycle " \
1732 "count for which classes may not be unloaded") \
1733 \
1734 product(bool, CMSCompactWhenClearAllSoftRefs, true, \
1735 "Compact when asked to collect CMS gen with " \
1736 "clear_all_soft_refs()") \
1737 \
1738 product(bool, UseCMSCompactAtFullCollection, true, \
1739 "Use Mark-Sweep-Compact algorithm at full collections") \
1740 \
1741 product(uintx, CMSFullGCsBeforeCompaction, 0, \
1742 "Number of CMS full collection done before compaction if > 0") \
1743 \
1744 develop(intx, CMSDictionaryChoice, 0, \
1745 "Use BinaryTreeDictionary as default in the CMS generation") \
1746 \
1747 product(uintx, CMSIndexedFreeListReplenish, 4, \
1748 "Replenish an indexed free list with this number of chunks") \
1749 \
1750 product(bool, CMSReplenishIntermediate, true, \
1751 "Replenish all intermediate free-list caches") \
1752 \
1753 product(bool, CMSSplitIndexedFreeListBlocks, true, \
1754 "When satisfying batched demand, split blocks from the " \
1755 "IndexedFreeList whose size is a multiple of requested size") \
1756 \
1757 product(bool, CMSLoopWarn, false, \
1758 "Warn in case of excessive CMS looping") \
1759 \
1760 develop(bool, CMSOverflowEarlyRestoration, false, \
1761 "Restore preserved marks early") \
1762 \
1763 product(uintx, MarkStackSize, NOT_LP64(32*K) LP64_ONLY(4*M), \
1764 "Size of marking stack") \
1765 \
1766 product(uintx, MarkStackSizeMax, NOT_LP64(4*M) LP64_ONLY(512*M), \
1767 "Maximum size of marking stack") \
1768 \
1769 notproduct(bool, CMSMarkStackOverflowALot, false, \
1770 "Simulate frequent marking stack / work queue overflow") \
1771 \
1772 notproduct(uintx, CMSMarkStackOverflowInterval, 1000, \
1773 "An \"interval\" counter that determines how frequently " \
1774 "to simulate overflow; a smaller number increases frequency") \
1775 \
1776 product(uintx, CMSMaxAbortablePrecleanLoops, 0, \
1777 "Maximum number of abortable preclean iterations, if > 0") \
1778 \
1779 product(intx, CMSMaxAbortablePrecleanTime, 5000, \
1780 "Maximum time in abortable preclean (in milliseconds)") \
1781 \
1782 product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \
1783 "Nominal minimum work per abortable preclean iteration") \
1784 \
1785 manageable(intx, CMSAbortablePrecleanWaitMillis, 100, \
1786 "Time that we sleep between iterations when not given " \
1787 "enough work per iteration") \
1788 \
1789 product(uintx, CMSRescanMultiple, 32, \
1790 "Size (in cards) of CMS parallel rescan task") \
1791 \
1792 product(uintx, CMSConcMarkMultiple, 32, \
1793 "Size (in cards) of CMS concurrent MT marking task") \
1794 \
1795 product(bool, CMSAbortSemantics, false, \
1796 "Whether abort-on-overflow semantics is implemented") \
1797 \
1798 product(bool, CMSParallelInitialMarkEnabled, true, \
1799 "Use the parallel initial mark.") \
1800 \
1801 product(bool, CMSParallelRemarkEnabled, true, \
1802 "Whether parallel remark enabled (only if ParNewGC)") \
1803 \
1804 product(bool, CMSParallelSurvivorRemarkEnabled, true, \
1805 "Whether parallel remark of survivor space " \
1806 "enabled (effective only if CMSParallelRemarkEnabled)") \
1807 \
1808 product(bool, CMSPLABRecordAlways, true, \
1809 "Always record survivor space PLAB boundaries (effective only " \
1810 "if CMSParallelSurvivorRemarkEnabled)") \
1811 \
1812 product(bool, CMSEdenChunksRecordAlways, true, \
1813 "Always record eden chunks used for the parallel initial mark " \
1814 "or remark of eden") \
1815 \
1816 product(bool, CMSPrintEdenSurvivorChunks, false, \
1817 "Print the eden and the survivor chunks used for the parallel " \
1818 "initial mark or remark of the eden/survivor spaces") \
1819 \
1820 product(bool, CMSConcurrentMTEnabled, true, \
1821 "Whether multi-threaded concurrent work enabled " \
1822 "(effective only if ParNewGC)") \
1823 \
1824 product(bool, CMSPrecleaningEnabled, true, \
1825 "Whether concurrent precleaning enabled") \
1826 \
1827 product(uintx, CMSPrecleanIter, 3, \
1828 "Maximum number of precleaning iteration passes") \
1829 \
1830 product(uintx, CMSPrecleanNumerator, 2, \
1831 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence " \
1832 "ratio") \
1833 \
1834 product(uintx, CMSPrecleanDenominator, 3, \
1835 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence " \
1836 "ratio") \
1837 \
1838 product(bool, CMSPrecleanRefLists1, true, \
1839 "Preclean ref lists during (initial) preclean phase") \
1840 \
1841 product(bool, CMSPrecleanRefLists2, false, \
1842 "Preclean ref lists during abortable preclean phase") \
1843 \
1844 product(bool, CMSPrecleanSurvivors1, false, \
1845 "Preclean survivors during (initial) preclean phase") \
1846 \
1847 product(bool, CMSPrecleanSurvivors2, true, \
1848 "Preclean survivors during abortable preclean phase") \
1849 \
1850 product(uintx, CMSPrecleanThreshold, 1000, \
1851 "Do not iterate again if number of dirty cards is less than this")\
1852 \
1853 product(bool, CMSCleanOnEnter, true, \
1854 "Clean-on-enter optimization for reducing number of dirty cards") \
1855 \
1856 product(uintx, CMSRemarkVerifyVariant, 1, \
1857 "Choose variant (1,2) of verification following remark") \
1858 \
1859 product(uintx, CMSScheduleRemarkEdenSizeThreshold, 2*M, \
1860 "If Eden size is below this, do not try to schedule remark") \
1861 \
1862 product(uintx, CMSScheduleRemarkEdenPenetration, 50, \
1863 "The Eden occupancy percentage (0-100) at which " \
1864 "to try and schedule remark pause") \
1865 \
1866 product(uintx, CMSScheduleRemarkSamplingRatio, 5, \
1867 "Start sampling eden top at least before young gen " \
1868 "occupancy reaches 1/<ratio> of the size at which " \
1869 "we plan to schedule remark") \
1870 \
1871 product(uintx, CMSSamplingGrain, 16*K, \
1872 "The minimum distance between eden samples for CMS (see above)") \
1873 \
1874 product(bool, CMSScavengeBeforeRemark, false, \
1875 "Attempt scavenge before the CMS remark step") \
1876 \
1877 develop(bool, CMSTraceSweeper, false, \
1878 "Trace some actions of the CMS sweeper") \
1879 \
1880 product(uintx, CMSWorkQueueDrainThreshold, 10, \
1881 "Don't drain below this size per parallel worker/thief") \
1882 \
1883 manageable(intx, CMSWaitDuration, 2000, \
1884 "Time in milliseconds that CMS thread waits for young GC") \
1885 \
1886 develop(uintx, CMSCheckInterval, 1000, \
1887 "Interval in milliseconds that CMS thread checks if it " \
1888 "should start a collection cycle") \
1889 \
1890 product(bool, CMSYield, true, \
1891 "Yield between steps of CMS") \
1892 \
1893 product(uintx, CMSBitMapYieldQuantum, 10*M, \
1894 "Bitmap operations should process at most this many bits " \
1895 "between yields") \
1896 \
1897 product(bool, CMSDumpAtPromotionFailure, false, \
1898 "Dump useful information about the state of the CMS old " \
1899 "generation upon a promotion failure") \
1900 \
1901 product(bool, CMSPrintChunksInDump, false, \
1902 "In a dump enabled by CMSDumpAtPromotionFailure, include " \
1903 "more detailed information about the free chunks") \
1904 \
1905 product(bool, CMSPrintObjectsInDump, false, \
1906 "In a dump enabled by CMSDumpAtPromotionFailure, include " \
1907 "more detailed information about the allocated objects") \
1908 \
1909 diagnostic(bool, FLSVerifyAllHeapReferences, false, \
1910 "Verify that all references across the FLS boundary " \
1911 "are to valid objects") \
1912 \
1913 diagnostic(bool, FLSVerifyLists, false, \
1914 "Do lots of (expensive) FreeListSpace verification") \
1915 \
1916 diagnostic(bool, FLSVerifyIndexTable, false, \
1917 "Do lots of (expensive) FLS index table verification") \
1918 \
1919 develop(bool, FLSVerifyDictionary, false, \
1920 "Do lots of (expensive) FLS dictionary verification") \
1921 \
1922 develop(bool, VerifyBlockOffsetArray, false, \
1923 "Do (expensive) block offset array verification") \
1924 \
1925 diagnostic(bool, BlockOffsetArrayUseUnallocatedBlock, false, \
1926 "Maintain _unallocated_block in BlockOffsetArray " \
1927 "(currently applicable only to CMS collector)") \
1928 \
1929 develop(bool, TraceCMSState, false, \
1930 "Trace the state of the CMS collection") \
1931 \
1932 product(intx, RefDiscoveryPolicy, 0, \
1933 "Select type of reference discovery policy: " \
1934 "reference-based(0) or referent-based(1)") \
1935 \
1936 product(bool, ParallelRefProcEnabled, false, \
1937 "Enable parallel reference processing whenever possible") \
1938 \
1939 product(bool, ParallelRefProcBalancingEnabled, true, \
1940 "Enable balancing of reference processing queues") \
1941 \
1942 product(uintx, CMSTriggerRatio, 80, \
1943 "Percentage of MinHeapFreeRatio in CMS generation that is " \
1944 "allocated before a CMS collection cycle commences") \
1945 \
1946 product(uintx, CMSBootstrapOccupancy, 50, \
1947 "Percentage CMS generation occupancy at which to " \
1948 "initiate CMS collection for bootstrapping collection stats") \
1949 \
1950 product(intx, CMSInitiatingOccupancyFraction, -1, \
1951 "Percentage CMS generation occupancy to start a CMS collection " \
1952 "cycle. A negative value means that CMSTriggerRatio is used") \
1953 \
1954 product(uintx, InitiatingHeapOccupancyPercent, 45, \
1955 "Percentage of the (entire) heap occupancy to start a " \
1956 "concurrent GC cycle. It is used by GCs that trigger a " \
1957 "concurrent GC cycle based on the occupancy of the entire heap, " \
1958 "not just one of the generations (e.g., G1). A value of 0 " \
1959 "denotes 'do constant GC cycles'.") \
1960 \
1961 manageable(intx, CMSTriggerInterval, -1, \
1962 "Commence a CMS collection cycle (at least) every so many " \
1963 "milliseconds (0 permanently, -1 disabled)") \
1964 \
1965 product(bool, UseCMSInitiatingOccupancyOnly, false, \
1966 "Only use occupancy as a criterion for starting a CMS collection")\
1967 \
1968 product(uintx, CMSIsTooFullPercentage, 98, \
1969 "An absolute ceiling above which CMS will always consider the " \
1970 "unloading of classes when class unloading is enabled") \
1971 \
1972 develop(bool, CMSTestInFreeList, false, \
1973 "Check if the coalesced range is already in the " \
1974 "free lists as claimed") \
1975 \
1976 notproduct(bool, CMSVerifyReturnedBytes, false, \
1977 "Check that all the garbage collected was returned to the " \
1978 "free lists") \
1979 \
1980 notproduct(bool, ScavengeALot, false, \
1981 "Force scavenge at every Nth exit from the runtime system " \
1982 "(N=ScavengeALotInterval)") \
1983 \
1984 develop(bool, FullGCALot, false, \
1985 "Force full gc at every Nth exit from the runtime system " \
1986 "(N=FullGCALotInterval)") \
1987 \
1988 notproduct(bool, GCALotAtAllSafepoints, false, \
1989 "Enforce ScavengeALot/GCALot at all potential safepoints") \
1990 \
1991 product(bool, PrintPromotionFailure, false, \
1992 "Print additional diagnostic information following " \
1993 "promotion failure") \
1994 \
1995 notproduct(bool, PromotionFailureALot, false, \
1996 "Use promotion failure handling on every youngest generation " \
1997 "collection") \
1998 \
1999 develop(uintx, PromotionFailureALotCount, 1000, \
2000 "Number of promotion failures occurring at ParGCAllocBuffer " \
2001 "refill attempts (ParNew) or promotion attempts " \
2002 "(other young collectors)") \
2003 \
2004 develop(uintx, PromotionFailureALotInterval, 5, \
2005 "Total collections between promotion failures a lot") \
2006 \
2007 experimental(uintx, WorkStealingSleepMillis, 1, \
2008 "Sleep time when sleep is used for yields") \
2009 \
2010 experimental(uintx, WorkStealingYieldsBeforeSleep, 5000, \
2011 "Number of yields before a sleep is done during work stealing") \
2012 \
2013 experimental(uintx, WorkStealingHardSpins, 4096, \
2014 "Number of iterations in a spin loop between checks on " \
2015 "time out of hard spin") \
2016 \
2017 experimental(uintx, WorkStealingSpinToYieldRatio, 10, \
2018 "Ratio of hard spins to calls to yield") \
2019 \
2020 develop(uintx, ObjArrayMarkingStride, 512, \
2021 "Number of object array elements to push onto the marking stack " \
2022 "before pushing a continuation entry") \
2023 \
2024 develop(bool, MetadataAllocationFailALot, false, \
2025 "Fail metadata allocations at intervals controlled by " \
2026 "MetadataAllocationFailALotInterval") \
2027 \
2028 develop(uintx, MetadataAllocationFailALotInterval, 1000, \
2029 "Metadata allocation failure a lot interval") \
2030 \
2031 develop(bool, TraceMetadataChunkAllocation, false, \
2032 "Trace chunk metadata allocations") \
2033 \
2034 product(bool, TraceMetadataHumongousAllocation, false, \
2035 "Trace humongous metadata allocations") \
2036 \
2037 develop(bool, TraceMetavirtualspaceAllocation, false, \
2038 "Trace virtual space metadata allocations") \
2039 \
2040 notproduct(bool, ExecuteInternalVMTests, false, \
2041 "Enable execution of internal VM tests") \
2042 \
2043 notproduct(bool, VerboseInternalVMTests, false, \
2044 "Turn on logging for internal VM tests.") \
2045 \
2046 product_pd(bool, UseTLAB, "Use thread-local object allocation") \
2047 \
2048 product_pd(bool, ResizeTLAB, \
2049 "Dynamically resize TLAB size for threads") \
2050 \
2051 product(bool, ZeroTLAB, false, \
2052 "Zero out the newly created TLAB") \
2053 \
2054 product(bool, FastTLABRefill, true, \
2055 "Use fast TLAB refill code") \
2056 \
2057 product(bool, PrintTLAB, false, \
2058 "Print various TLAB related information") \
2059 \
2060 product(bool, TLABStats, true, \
2061 "Provide more detailed and expensive TLAB statistics " \
2062 "(with PrintTLAB)") \
2063 \
2064 EMBEDDED_ONLY(product(bool, LowMemoryProtection, true, \
2065 "Enable LowMemoryProtection")) \
2066 \
2067 product_pd(bool, NeverActAsServerClassMachine, \
2068 "Never act like a server-class machine") \
2069 \
2070 product(bool, AlwaysActAsServerClassMachine, false, \
2071 "Always act like a server-class machine") \
2072 \
2073 product_pd(uint64_t, MaxRAM, \
2074 "Real memory size (in bytes) used to set maximum heap size") \
2075 \
2076 product(uintx, ErgoHeapSizeLimit, 0, \
2077 "Maximum ergonomically set heap size (in bytes); zero means use " \
2078 "MaxRAM / MaxRAMFraction") \
2079 \
2080 product(uintx, MaxRAMFraction, 4, \
2081 "Maximum fraction (1/n) of real memory used for maximum heap " \
2082 "size") \
2083 \
2084 product(uintx, DefaultMaxRAMFraction, 4, \
2085 "Maximum fraction (1/n) of real memory used for maximum heap " \
2086 "size; deprecated: to be renamed to MaxRAMFraction") \
2087 \
2088 product(uintx, MinRAMFraction, 2, \
2089 "Minimum fraction (1/n) of real memory used for maximum heap " \
2090 "size on systems with small physical memory size") \
2091 \
2092 product(uintx, InitialRAMFraction, 64, \
2093 "Fraction (1/n) of real memory used for initial heap size") \
2094 \
2095 develop(uintx, MaxVirtMemFraction, 2, \
2096 "Maximum fraction (1/n) of virtual memory used for ergonomically "\
2097 "determining maximum heap size") \
2098 \
2099 product(bool, UseAutoGCSelectPolicy, false, \
2100 "Use automatic collection selection policy") \
2101 \
2102 product(uintx, AutoGCSelectPauseMillis, 5000, \
2103 "Automatic GC selection pause threshold in milliseconds") \
2104 \
2105 product(bool, UseAdaptiveSizePolicy, true, \
2106 "Use adaptive generation sizing policies") \
2107 \
2108 product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \
2109 "Use adaptive survivor sizing policies") \
2110 \
2111 product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \
2112 "Use adaptive young-old sizing policies at minor collections") \
2113 \
2114 product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \
2115 "Use adaptive young-old sizing policies at major collections") \
2116 \
2117 product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \
2118 "Include statistics from System.gc() for adaptive size policy") \
2119 \
2120 product(bool, UseAdaptiveGCBoundary, false, \
2121 "Allow young-old boundary to move") \
2122 \
2123 develop(bool, TraceAdaptiveGCBoundary, false, \
2124 "Trace young-old boundary moves") \
2125 \
2126 develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \
2127 "Resize the virtual spaces of the young or old generations") \
2128 \
2129 product(uintx, AdaptiveSizeThroughPutPolicy, 0, \
2130 "Policy for changing generation size for throughput goals") \
2131 \
2132 product(uintx, AdaptiveSizePausePolicy, 0, \
2133 "Policy for changing generation size for pause goals") \
2134 \
2135 develop(bool, PSAdjustTenuredGenForMinorPause, false, \
2136 "Adjust tenured generation to achieve a minor pause goal") \
2137 \
2138 develop(bool, PSAdjustYoungGenForMajorPause, false, \
2139 "Adjust young generation to achieve a major pause goal") \
2140 \
2141 product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \
2142 "Number of steps where heuristics is used before data is used") \
2143 \
2144 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \
2145 "Number of collections before the adaptive sizing is started") \
2146 \
2147 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \
2148 "Collection interval for printing information; zero means never") \
2149 \
2150 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \
2151 "Use adaptive minimum footprint as a goal") \
2152 \
2153 product(uintx, AdaptiveSizePolicyWeight, 10, \
2154 "Weight given to exponential resizing, between 0 and 100") \
2155 \
2156 product(uintx, AdaptiveTimeWeight, 25, \
2157 "Weight given to time in adaptive policy, between 0 and 100") \
2158 \
2159 product(uintx, PausePadding, 1, \
2160 "How much buffer to keep for pause time") \
2161 \
2162 product(uintx, PromotedPadding, 3, \
2163 "How much buffer to keep for promotion failure") \
2164 \
2165 product(uintx, SurvivorPadding, 3, \
2166 "How much buffer to keep for survivor overflow") \
2167 \
2168 product(uintx, ThresholdTolerance, 10, \
2169 "Allowed collection cost difference between generations") \
2170 \
2171 product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \
2172 "If collection costs are within margin, reduce both by full " \
2173 "delta") \
2174 \
2175 product(uintx, YoungGenerationSizeIncrement, 20, \
2176 "Adaptive size percentage change in young generation") \
2177 \
2178 product(uintx, YoungGenerationSizeSupplement, 80, \
2179 "Supplement to YoungedGenerationSizeIncrement used at startup") \
2180 \
2181 product(uintx, YoungGenerationSizeSupplementDecay, 8, \
2182 "Decay factor to YoungedGenerationSizeSupplement") \
2183 \
2184 product(uintx, TenuredGenerationSizeIncrement, 20, \
2185 "Adaptive size percentage change in tenured generation") \
2186 \
2187 product(uintx, TenuredGenerationSizeSupplement, 80, \
2188 "Supplement to TenuredGenerationSizeIncrement used at startup") \
2189 \
2190 product(uintx, TenuredGenerationSizeSupplementDecay, 2, \
2191 "Decay factor to TenuredGenerationSizeIncrement") \
2192 \
2193 product(uintx, MaxGCPauseMillis, max_uintx, \
2194 "Adaptive size policy maximum GC pause time goal in millisecond, "\
2195 "or (G1 Only) the maximum GC time per MMU time slice") \
2196 \
2197 product(uintx, GCPauseIntervalMillis, 0, \
2198 "Time slice for MMU specification") \
2199 \
2200 product(uintx, MaxGCMinorPauseMillis, max_uintx, \
2201 "Adaptive size policy maximum GC minor pause time goal " \
2202 "in millisecond") \
2203 \
2204 product(uintx, GCTimeRatio, 99, \
2205 "Adaptive size policy application time to GC time ratio") \
2206 \
2207 product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \
2208 "Adaptive size scale down factor for shrinking") \
2209 \
2210 product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \
2211 "Adaptive size decays the major cost for long major intervals") \
2212 \
2213 product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \
2214 "Time scale over which major costs decay") \
2215 \
2216 product(uintx, MinSurvivorRatio, 3, \
2217 "Minimum ratio of young generation/survivor space size") \
2218 \
2219 product(uintx, InitialSurvivorRatio, 8, \
2220 "Initial ratio of young generation/survivor space size") \
2221 \
2222 product(uintx, BaseFootPrintEstimate, 256*M, \
2223 "Estimate of footprint other than Java Heap") \
2224 \
2225 product(bool, UseGCOverheadLimit, true, \
2226 "Use policy to limit of proportion of time spent in GC " \
2227 "before an OutOfMemory error is thrown") \
2228 \
2229 product(uintx, GCTimeLimit, 98, \
2230 "Limit of the proportion of time spent in GC before " \
2231 "an OutOfMemoryError is thrown (used with GCHeapFreeLimit)") \
2232 \
2233 product(uintx, GCHeapFreeLimit, 2, \
2234 "Minimum percentage of free space after a full GC before an " \
2235 "OutOfMemoryError is thrown (used with GCTimeLimit)") \
2236 \
2237 develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \
2238 "Number of consecutive collections before gc time limit fires") \
2239 \
2240 product(bool, PrintAdaptiveSizePolicy, false, \
2241 "Print information about AdaptiveSizePolicy") \
2242 \
2243 product(intx, PrefetchCopyIntervalInBytes, -1, \
2244 "How far ahead to prefetch destination area (<= 0 means off)") \
2245 \
2246 product(intx, PrefetchScanIntervalInBytes, -1, \
2247 "How far ahead to prefetch scan area (<= 0 means off)") \
2248 \
2249 product(intx, PrefetchFieldsAhead, -1, \
2250 "How many fields ahead to prefetch in oop scan (<= 0 means off)") \
2251 \
2252 diagnostic(bool, VerifySilently, false, \
2253 "Do not print the verification progress") \
2254 \
2255 diagnostic(bool, VerifyDuringStartup, false, \
2256 "Verify memory system before executing any Java code " \
2257 "during VM initialization") \
2258 \
2259 diagnostic(bool, VerifyBeforeExit, trueInDebug, \
2260 "Verify system before exiting") \
2261 \
2262 diagnostic(bool, VerifyBeforeGC, false, \
2263 "Verify memory system before GC") \
2264 \
2265 diagnostic(bool, VerifyAfterGC, false, \
2266 "Verify memory system after GC") \
2267 \
2268 diagnostic(bool, VerifyDuringGC, false, \
2269 "Verify memory system during GC (between phases)") \
2270 \
2271 diagnostic(bool, GCParallelVerificationEnabled, true, \
2272 "Enable parallel memory system verification") \
2273 \
2274 diagnostic(bool, DeferInitialCardMark, false, \
2275 "When +ReduceInitialCardMarks, explicitly defer any that " \
2276 "may arise from new_pre_store_barrier") \
2277 \
2278 diagnostic(bool, VerifyRememberedSets, false, \
2279 "Verify GC remembered sets") \
2280 \
2281 diagnostic(bool, VerifyObjectStartArray, true, \
2282 "Verify GC object start array if verify before/after") \
2283 \
2284 product(bool, DisableExplicitGC, false, \
2285 "Ignore calls to System.gc()") \
2286 \
2287 notproduct(bool, CheckMemoryInitialization, false, \
2288 "Check memory initialization") \
2289 \
2290 diagnostic(bool, BindCMSThreadToCPU, false, \
2291 "Bind CMS Thread to CPU if possible") \
2292 \
2293 diagnostic(uintx, CPUForCMSThread, 0, \
2294 "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \
2295 \
2296 product(bool, BindGCTaskThreadsToCPUs, false, \
2297 "Bind GCTaskThreads to CPUs if possible") \
2298 \
2299 product(bool, UseGCTaskAffinity, false, \
2300 "Use worker affinity when asking for GCTasks") \
2301 \
2302 product(uintx, ProcessDistributionStride, 4, \
2303 "Stride through processors when distributing processes") \
2304 \
2305 product(uintx, CMSCoordinatorYieldSleepCount, 10, \
2306 "Number of times the coordinator GC thread will sleep while " \
2307 "yielding before giving up and resuming GC") \
2308 \
2309 product(uintx, CMSYieldSleepCount, 0, \
2310 "Number of times a GC thread (minus the coordinator) " \
2311 "will sleep while yielding before giving up and resuming GC") \
2312 \
2313 /* gc tracing */ \
2314 manageable(bool, PrintGC, false, \
2315 "Print message at garbage collection") \
2316 \
2317 manageable(bool, PrintGCDetails, false, \
2318 "Print more details at garbage collection") \
2319 \
2320 manageable(bool, PrintGCDateStamps, false, \
2321 "Print date stamps at garbage collection") \
2322 \
2323 manageable(bool, PrintGCTimeStamps, false, \
2324 "Print timestamps at garbage collection") \
2325 \
2326 manageable(bool, PrintGCID, true, \
2327 "Print an identifier for each garbage collection") \
2328 \
2329 product(bool, PrintGCTaskTimeStamps, false, \
2330 "Print timestamps for individual gc worker thread tasks") \
2331 \
2332 develop(intx, ConcGCYieldTimeout, 0, \
2333 "If non-zero, assert that GC threads yield within this " \
2334 "number of milliseconds") \
2335 \
2336 notproduct(bool, TraceMarkSweep, false, \
2337 "Trace mark sweep") \
2338 \
2339 product(bool, PrintReferenceGC, false, \
2340 "Print times spent handling reference objects during GC " \
2341 "(enabled only when PrintGCDetails)") \
2342 \
2343 develop(bool, TraceReferenceGC, false, \
2344 "Trace handling of soft/weak/final/phantom references") \
2345 \
2346 develop(bool, TraceFinalizerRegistration, false, \
2347 "Trace registration of final references") \
2348 \
2349 notproduct(bool, TraceScavenge, false, \
2350 "Trace scavenge") \
2351 \
2352 product(bool, IgnoreEmptyClassPaths, false, \
2353 "Ignore empty path elements in -classpath") \
2354 \
2355 product(bool, TraceClassPaths, false, \
2356 "Trace processing of class paths") \
2357 \
2358 product_rw(bool, TraceClassLoading, false, \
2359 "Trace all classes loaded") \
2360 \
2361 product(bool, TraceClassLoadingPreorder, false, \
2362 "Trace all classes loaded in order referenced (not loaded)") \
2363 \
2364 product_rw(bool, TraceClassUnloading, false, \
2365 "Trace unloading of classes") \
2366 \
2367 product_rw(bool, TraceLoaderConstraints, false, \
2368 "Trace loader constraints") \
2369 \
2370 develop(bool, TraceClassLoaderData, false, \
2371 "Trace class loader loader_data lifetime") \
2372 \
2373 product(uintx, InitialBootClassLoaderMetaspaceSize, \
2374 NOT_LP64(2200*K) LP64_ONLY(4*M), \
2375 "Initial size of the boot class loader data metaspace") \
2376 \
2377 product(bool, TraceYoungGenTime, false, \
2378 "Trace accumulated time for young collection") \
2379 \
2380 product(bool, TraceOldGenTime, false, \
2381 "Trace accumulated time for old collection") \
2382 \
2383 product(bool, PrintTenuringDistribution, false, \
2384 "Print tenuring age information") \
2385 \
2386 product_rw(bool, PrintHeapAtGC, false, \
2387 "Print heap layout before and after each GC") \
2388 \
2389 product_rw(bool, PrintHeapAtGCExtended, false, \
2390 "Print extended information about the layout of the heap " \
2391 "when -XX:+PrintHeapAtGC is set") \
2392 \
2393 product(bool, PrintHeapAtSIGBREAK, true, \
2394 "Print heap layout in response to SIGBREAK") \
2395 \
2396 manageable(bool, PrintClassHistogramBeforeFullGC, false, \
2397 "Print a class histogram before any major stop-world GC") \
2398 \
2399 manageable(bool, PrintClassHistogramAfterFullGC, false, \
2400 "Print a class histogram after any major stop-world GC") \
2401 \
2402 manageable(bool, PrintClassHistogram, false, \
2403 "Print a histogram of class instances") \
2404 \
2405 develop(bool, TraceWorkGang, false, \
2406 "Trace activities of work gangs") \
2407 \
2408 product(bool, TraceParallelOldGCTasks, false, \
2409 "Trace multithreaded GC activity") \
2410 \
2411 develop(bool, TraceBlockOffsetTable, false, \
2412 "Print BlockOffsetTable maps") \
2413 \
2414 develop(bool, TraceCardTableModRefBS, false, \
2415 "Print CardTableModRefBS maps") \
2416 \
2417 develop(bool, TraceGCTaskManager, false, \
2418 "Trace actions of the GC task manager") \
2419 \
2420 develop(bool, TraceGCTaskQueue, false, \
2421 "Trace actions of the GC task queues") \
2422 \
2423 diagnostic(bool, TraceGCTaskThread, false, \
2424 "Trace actions of the GC task threads") \
2425 \
2426 product(bool, PrintParallelOldGCPhaseTimes, false, \
2427 "Print the time taken by each phase in ParallelOldGC " \
2428 "(PrintGCDetails must also be enabled)") \
2429 \
2430 develop(bool, TraceParallelOldGCMarkingPhase, false, \
2431 "Trace marking phase in ParallelOldGC") \
2432 \
2433 develop(bool, TraceParallelOldGCSummaryPhase, false, \
2434 "Trace summary phase in ParallelOldGC") \
2435 \
2436 develop(bool, TraceParallelOldGCCompactionPhase, false, \
2437 "Trace compaction phase in ParallelOldGC") \
2438 \
2439 develop(bool, TraceParallelOldGCDensePrefix, false, \
2440 "Trace dense prefix computation for ParallelOldGC") \
2441 \
2442 develop(bool, IgnoreLibthreadGPFault, false, \
2443 "Suppress workaround for libthread GP fault") \
2444 \
2445 product(bool, PrintJNIGCStalls, false, \
2446 "Print diagnostic message when GC is stalled " \
2447 "by JNI critical section") \
2448 \
2449 experimental(double, ObjectCountCutOffPercent, 0.5, \
2450 "The percentage of the used heap that the instances of a class " \
2451 "must occupy for the class to generate a trace event") \
2452 \
2453 /* GC log rotation setting */ \
2454 \
2455 product(bool, UseGCLogFileRotation, false, \
2456 "Rotate gclog files (for long running applications). It requires "\
2457 "-Xloggc:<filename>") \
2458 \
2459 product(uintx, NumberOfGCLogFiles, 0, \
2460 "Number of gclog files in rotation " \
2461 "(default: 0, no rotation)") \
2462 \
2463 product(uintx, GCLogFileSize, 8*K, \
2464 "GC log file size, requires UseGCLogFileRotation. " \
2465 "Set to 0 to only trigger rotation via jcmd") \
2466 \
2467 /* JVMTI heap profiling */ \
2468 \
2469 diagnostic(bool, TraceJVMTIObjectTagging, false, \
2470 "Trace JVMTI object tagging calls") \
2471 \
2472 diagnostic(bool, VerifyBeforeIteration, false, \
2473 "Verify memory system before JVMTI iteration") \
2474 \
2475 /* compiler interface */ \
2476 \
2477 develop(bool, CIPrintCompilerName, false, \
2478 "when CIPrint is active, print the name of the active compiler") \
2479 \
2480 develop(bool, CIPrintCompileQueue, false, \
2481 "display the contents of the compile queue whenever a " \
2482 "compilation is enqueued") \
2483 \
2484 develop(bool, CIPrintRequests, false, \
2485 "display every request for compilation") \
2486 \
2487 product(bool, CITime, false, \
2488 "collect timing information for compilation") \
2489 \
2490 develop(bool, CITimeEach, false, \
2491 "display timing information after each successful compilation") \
2492 \
2493 develop(bool, CICountOSR, false, \
2494 "use a separate counter when assigning ids to osr compilations") \
2495 \
2496 develop(bool, CICompileNatives, true, \
2497 "compile native methods if supported by the compiler") \
2498 \
2499 develop_pd(bool, CICompileOSR, \
2500 "compile on stack replacement methods if supported by the " \
2501 "compiler") \
2502 \
2503 develop(bool, CIPrintMethodCodes, false, \
2504 "print method bytecodes of the compiled code") \
2505 \
2506 develop(bool, CIPrintTypeFlow, false, \
2507 "print the results of ciTypeFlow analysis") \
2508 \
2509 develop(bool, CITraceTypeFlow, false, \
2510 "detailed per-bytecode tracing of ciTypeFlow analysis") \
2511 \
2512 develop(intx, OSROnlyBCI, -1, \
2513 "OSR only at this bci. Negative values mean exclude that bci") \
2514 \
2515 /* compiler */ \
2516 \
2517 product(intx, CICompilerCount, CI_COMPILER_COUNT, \
2518 "Number of compiler threads to run") \
2519 \
2520 product(intx, CompilationPolicyChoice, 0, \
2521 "which compilation policy (0/1)") \
2522 \
2523 develop(bool, UseStackBanging, true, \
2524 "use stack banging for stack overflow checks (required for " \
2525 "proper StackOverflow handling; disable only to measure cost " \
2526 "of stackbanging)") \
2527 \
2528 develop(bool, UseStrictFP, true, \
2529 "use strict fp if modifier strictfp is set") \
2530 \
2531 develop(bool, GenerateSynchronizationCode, true, \
2532 "generate locking/unlocking code for synchronized methods and " \
2533 "monitors") \
2534 \
2535 develop(bool, GenerateCompilerNullChecks, true, \
2536 "Generate explicit null checks for loads/stores/calls") \
2537 \
2538 develop(bool, GenerateRangeChecks, true, \
2539 "Generate range checks for array accesses") \
2540 \
2541 develop_pd(bool, ImplicitNullChecks, \
2542 "Generate code for implicit null checks") \
2543 \
2544 product_pd(bool, TrapBasedNullChecks, \
2545 "Generate code for null checks that uses a cmp and trap " \
2546 "instruction raising SIGTRAP. This is only used if an access to" \
2547 "null (+offset) will not raise a SIGSEGV, i.e.," \
2548 "ImplicitNullChecks don't work (PPC64).") \
2549 \
2550 product(bool, PrintSafepointStatistics, false, \
2551 "Print statistics about safepoint synchronization") \
2552 \
2553 product(intx, PrintSafepointStatisticsCount, 300, \
2554 "Total number of safepoint statistics collected " \
2555 "before printing them out") \
2556 \
2557 product(intx, PrintSafepointStatisticsTimeout, -1, \
2558 "Print safepoint statistics only when safepoint takes " \
2559 "more than PrintSafepointSatisticsTimeout in millis") \
2560 \
2561 product(bool, TraceSafepointCleanupTime, false, \
2562 "Print the break down of clean up tasks performed during " \
2563 "safepoint") \
2564 \
2565 product(bool, Inline, true, \
2566 "Enable inlining") \
2567 \
2568 product(bool, ClipInlining, true, \
2569 "Clip inlining if aggregate method exceeds DesiredMethodLimit") \
2570 \
2571 develop(bool, UseCHA, true, \
2572 "Enable CHA") \
2573 \
2574 product(bool, UseTypeProfile, true, \
2575 "Check interpreter profile for historically monomorphic calls") \
2576 \
2577 notproduct(bool, TimeCompiler, false, \
2578 "Time the compiler") \
2579 \
2580 diagnostic(bool, PrintInlining, false, \
2581 "Print inlining optimizations") \
2582 \
2583 product(bool, UsePopCountInstruction, false, \
2584 "Use population count instruction") \
2585 \
2586 develop(bool, EagerInitialization, false, \
2587 "Eagerly initialize classes if possible") \
2588 \
2589 develop(bool, TraceMethodReplacement, false, \
2590 "Print when methods are replaced do to recompilation") \
2591 \
2592 develop(bool, PrintMethodFlushing, false, \
2593 "Print the nmethods being flushed") \
2594 \
2595 diagnostic(bool, PrintMethodFlushingStatistics, false, \
2596 "print statistics about method flushing") \
2597 \
2598 diagnostic(intx, HotMethodDetectionLimit, 100000, \
2599 "Number of compiled code invocations after which " \
2600 "the method is considered as hot by the flusher") \
2601 \
2602 diagnostic(intx, MinPassesBeforeFlush, 10, \
2603 "Minimum number of sweeper passes before an nmethod " \
2604 "can be flushed") \
2605 \
2606 product(bool, UseCodeAging, true, \
2607 "Insert counter to detect warm methods") \
2608 \
2609 diagnostic(bool, StressCodeAging, false, \
2610 "Start with counters compiled in") \
2611 \
2612 develop(bool, UseRelocIndex, false, \
2613 "Use an index to speed random access to relocations") \
2614 \
2615 develop(bool, StressCodeBuffers, false, \
2616 "Exercise code buffer expansion and other rare state changes") \
2617 \
2618 diagnostic(bool, DebugNonSafepoints, trueInDebug, \
2619 "Generate extra debugging information for non-safepoints in " \
2620 "nmethods") \
2621 \
2622 product(bool, PrintVMOptions, false, \
2623 "Print flags that appeared on the command line") \
2624 \
2625 product(bool, IgnoreUnrecognizedVMOptions, false, \
2626 "Ignore unrecognized VM options") \
2627 \
2628 product(bool, PrintCommandLineFlags, false, \
2629 "Print flags specified on command line or set by ergonomics") \
2630 \
2631 product(bool, PrintFlagsInitial, false, \
2632 "Print all VM flags before argument processing and exit VM") \
2633 \
2634 product(bool, PrintFlagsFinal, false, \
2635 "Print all VM flags after argument and ergonomic processing") \
2636 \
2637 notproduct(bool, PrintFlagsWithComments, false, \
2638 "Print all VM flags with default values and descriptions and " \
2639 "exit") \
2640 \
2641 diagnostic(bool, SerializeVMOutput, true, \
2642 "Use a mutex to serialize output to tty and LogFile") \
2643 \
2644 diagnostic(bool, DisplayVMOutput, true, \
2645 "Display all VM output on the tty, independently of LogVMOutput") \
2646 \
2647 diagnostic(bool, LogVMOutput, false, \
2648 "Save VM output to LogFile") \
2649 \
2650 diagnostic(ccstr, LogFile, NULL, \
2651 "If LogVMOutput or LogCompilation is on, save VM output to " \
2652 "this file [default: ./hotspot_pid%p.log] (%p replaced with pid)")\
2653 \
2654 product(ccstr, ErrorFile, NULL, \
2655 "If an error occurs, save the error data to this file " \
2656 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \
2657 \
2658 product(bool, DisplayVMOutputToStderr, false, \
2659 "If DisplayVMOutput is true, display all VM output to stderr") \
2660 \
2661 product(bool, DisplayVMOutputToStdout, false, \
2662 "If DisplayVMOutput is true, display all VM output to stdout") \
2663 \
2664 product(bool, UseHeavyMonitors, false, \
2665 "use heavyweight instead of lightweight Java monitors") \
2666 \
2667 product(bool, PrintStringTableStatistics, false, \
2668 "print statistics about the StringTable and SymbolTable") \
2669 \
2670 diagnostic(bool, VerifyStringTableAtExit, false, \
2671 "verify StringTable contents at exit") \
2672 \
2673 notproduct(bool, PrintSymbolTableSizeHistogram, false, \
2674 "print histogram of the symbol table") \
2675 \
2676 notproduct(bool, ExitVMOnVerifyError, false, \
2677 "standard exit from VM if bytecode verify error " \
2678 "(only in debug mode)") \
2679 \
2680 notproduct(ccstr, AbortVMOnException, NULL, \
2681 "Call fatal if this exception is thrown. Example: " \
2682 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \
2683 \
2684 notproduct(ccstr, AbortVMOnExceptionMessage, NULL, \
2685 "Call fatal if the exception pointed by AbortVMOnException " \
2686 "has this message") \
2687 \
2688 develop(bool, DebugVtables, false, \
2689 "add debugging code to vtable dispatch") \
2690 \
2691 develop(bool, PrintVtables, false, \
2692 "print vtables when printing klass") \
2693 \
2694 notproduct(bool, PrintVtableStats, false, \
2695 "print vtables stats at end of run") \
2696 \
2697 develop(bool, TraceCreateZombies, false, \
2698 "trace creation of zombie nmethods") \
2699 \
2700 notproduct(bool, IgnoreLockingAssertions, false, \
2701 "disable locking assertions (for speed)") \
2702 \
2703 product(bool, RangeCheckElimination, true, \
2704 "Eliminate range checks") \
2705 \
2706 develop_pd(bool, UncommonNullCast, \
2707 "track occurrences of null in casts; adjust compiler tactics") \
2708 \
2709 develop(bool, TypeProfileCasts, true, \
2710 "treat casts like calls for purposes of type profiling") \
2711 \
2712 develop(bool, DelayCompilationDuringStartup, true, \
2713 "Delay invoking the compiler until main application class is " \
2714 "loaded") \
2715 \
2716 develop(bool, CompileTheWorld, false, \
2717 "Compile all methods in all classes in bootstrap class path " \
2718 "(stress test)") \
2719 \
2720 develop(bool, CompileTheWorldPreloadClasses, true, \
2721 "Preload all classes used by a class before start loading") \
2722 \
2723 notproduct(intx, CompileTheWorldSafepointInterval, 100, \
2724 "Force a safepoint every n compiles so sweeper can keep up") \
2725 \
2726 develop(bool, FillDelaySlots, true, \
2727 "Fill delay slots (on SPARC only)") \
2728 \
2729 develop(bool, TimeLivenessAnalysis, false, \
2730 "Time computation of bytecode liveness analysis") \
2731 \
2732 develop(bool, TraceLivenessGen, false, \
2733 "Trace the generation of liveness analysis information") \
2734 \
2735 notproduct(bool, TraceLivenessQuery, false, \
2736 "Trace queries of liveness analysis information") \
2737 \
2738 notproduct(bool, CollectIndexSetStatistics, false, \
2739 "Collect information about IndexSets") \
2740 \
2741 develop(bool, UseLoopSafepoints, true, \
2742 "Generate Safepoint nodes in every loop") \
2743 \
2744 develop(intx, FastAllocateSizeLimit, 128*K, \
2745 /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \
2746 "Inline allocations larger than this in doublewords must go slow")\
2747 \
2748 product(bool, AggressiveOpts, false, \
2749 "Enable aggressive optimizations - see arguments.cpp") \
2750 \
2751 product_pd(uintx, TypeProfileLevel, \
2752 "=XYZ, with Z: Type profiling of arguments at call; " \
2753 "Y: Type profiling of return value at call; " \
2754 "X: Type profiling of parameters to methods; " \
2755 "X, Y and Z in 0=off ; 1=jsr292 only; 2=all methods") \
2756 \
2757 product(intx, TypeProfileArgsLimit, 2, \
2758 "max number of call arguments to consider for type profiling") \
2759 \
2760 product(intx, TypeProfileParmsLimit, 2, \
2761 "max number of incoming parameters to consider for type profiling"\
2762 ", -1 for all") \
2763 \
2764 /* statistics */ \
2765 develop(bool, CountCompiledCalls, false, \
2766 "Count method invocations") \
2767 \
2768 notproduct(bool, CountRuntimeCalls, false, \
2769 "Count VM runtime calls") \
2770 \
2771 develop(bool, CountJNICalls, false, \
2772 "Count jni method invocations") \
2773 \
2774 notproduct(bool, CountJVMCalls, false, \
2775 "Count jvm method invocations") \
2776 \
2777 notproduct(bool, CountRemovableExceptions, false, \
2778 "Count exceptions that could be replaced by branches due to " \
2779 "inlining") \
2780 \
2781 notproduct(bool, ICMissHistogram, false, \
2782 "Produce histogram of IC misses") \
2783 \
2784 notproduct(bool, PrintClassStatistics, false, \
2785 "Print class statistics at end of run") \
2786 \
2787 notproduct(bool, PrintMethodStatistics, false, \
2788 "Print method statistics at end of run") \
2789 \
2790 /* interpreter */ \
2791 develop(bool, ClearInterpreterLocals, false, \
2792 "Always clear local variables of interpreter activations upon " \
2793 "entry") \
2794 \
2795 product_pd(bool, RewriteBytecodes, \
2796 "Allow rewriting of bytecodes (bytecodes are not immutable)") \
2797 \
2798 product_pd(bool, RewriteFrequentPairs, \
2799 "Rewrite frequently used bytecode pairs into a single bytecode") \
2800 \
2801 diagnostic(bool, PrintInterpreter, false, \
2802 "Print the generated interpreter code") \
2803 \
2804 product(bool, UseInterpreter, true, \
2805 "Use interpreter for non-compiled methods") \
2806 \
2807 develop(bool, UseFastSignatureHandlers, true, \
2808 "Use fast signature handlers for native calls") \
2809 \
2810 product(bool, UseLoopCounter, true, \
2811 "Increment invocation counter on backward branch") \
2812 \
2813 product_pd(bool, UseOnStackReplacement, \
2814 "Use on stack replacement, calls runtime if invoc. counter " \
2815 "overflows in loop") \
2816 \
2817 notproduct(bool, TraceOnStackReplacement, false, \
2818 "Trace on stack replacement") \
2819 \
2820 product_pd(bool, PreferInterpreterNativeStubs, \
2821 "Use always interpreter stubs for native methods invoked via " \
2822 "interpreter") \
2823 \
2824 develop(bool, CountBytecodes, false, \
2825 "Count number of bytecodes executed") \
2826 \
2827 develop(bool, PrintBytecodeHistogram, false, \
2828 "Print histogram of the executed bytecodes") \
2829 \
2830 develop(bool, PrintBytecodePairHistogram, false, \
2831 "Print histogram of the executed bytecode pairs") \
2832 \
2833 diagnostic(bool, PrintSignatureHandlers, false, \
2834 "Print code generated for native method signature handlers") \
2835 \
2836 develop(bool, VerifyOops, false, \
2837 "Do plausibility checks for oops") \
2838 \
2839 develop(bool, CheckUnhandledOops, false, \
2840 "Check for unhandled oops in VM code") \
2841 \
2842 develop(bool, VerifyJNIFields, trueInDebug, \
2843 "Verify jfieldIDs for instance fields") \
2844 \
2845 notproduct(bool, VerifyJNIEnvThread, false, \
2846 "Verify JNIEnv.thread == Thread::current() when entering VM " \
2847 "from JNI") \
2848 \
2849 develop(bool, VerifyFPU, false, \
2850 "Verify FPU state (check for NaN's, etc.)") \
2851 \
2852 develop(bool, VerifyThread, false, \
2853 "Watch the thread register for corruption (SPARC only)") \
2854 \
2855 develop(bool, VerifyActivationFrameSize, false, \
2856 "Verify that activation frame didn't become smaller than its " \
2857 "minimal size") \
2858 \
2859 develop(bool, TraceFrequencyInlining, false, \
2860 "Trace frequency based inlining") \
2861 \
2862 develop_pd(bool, InlineIntrinsics, \
2863 "Inline intrinsics that can be statically resolved") \
2864 \
2865 product_pd(bool, ProfileInterpreter, \
2866 "Profile at the bytecode level during interpretation") \
2867 \
2868 develop(bool, TraceProfileInterpreter, false, \
2869 "Trace profiling at the bytecode level during interpretation. " \
2870 "This outputs the profiling information collected to improve " \
2871 "jit compilation.") \
2872 \
2873 develop_pd(bool, ProfileTraps, \
2874 "Profile deoptimization traps at the bytecode level") \
2875 \
2876 product(intx, ProfileMaturityPercentage, 20, \
2877 "number of method invocations/branches (expressed as % of " \
2878 "CompileThreshold) before using the method's profile") \
2879 \
2880 diagnostic(bool, PrintMethodData, false, \
2881 "Print the results of +ProfileInterpreter at end of run") \
2882 \
2883 develop(bool, VerifyDataPointer, trueInDebug, \
2884 "Verify the method data pointer during interpreter profiling") \
2885 \
2886 develop(bool, VerifyCompiledCode, false, \
2887 "Include miscellaneous runtime verifications in nmethod code; " \
2888 "default off because it disturbs nmethod size heuristics") \
2889 \
2890 notproduct(bool, CrashGCForDumpingJavaThread, false, \
2891 "Manually make GC thread crash then dump java stack trace; " \
2892 "Test only") \
2893 \
2894 /* compilation */ \
2895 product(bool, UseCompiler, true, \
2896 "Use Just-In-Time compilation") \
2897 \
2898 develop(bool, TraceCompilationPolicy, false, \
2899 "Trace compilation policy") \
2900 \
2901 develop(bool, TimeCompilationPolicy, false, \
2902 "Time the compilation policy") \
2903 \
2904 product(bool, UseCounterDecay, true, \
2905 "Adjust recompilation counters") \
2906 \
2907 develop(intx, CounterHalfLifeTime, 30, \
2908 "Half-life time of invocation counters (in seconds)") \
2909 \
2910 develop(intx, CounterDecayMinIntervalLength, 500, \
2911 "The minimum interval (in milliseconds) between invocation of " \
2912 "CounterDecay") \
2913 \
2914 product(bool, AlwaysCompileLoopMethods, false, \
2915 "When using recompilation, never interpret methods " \
2916 "containing loops") \
2917 \
2918 product(bool, DontCompileHugeMethods, true, \
2919 "Do not compile methods > HugeMethodLimit") \
2920 \
2921 /* Bytecode escape analysis estimation. */ \
2922 product(bool, EstimateArgEscape, true, \
2923 "Analyze bytecodes to estimate escape state of arguments") \
2924 \
2925 product(intx, BCEATraceLevel, 0, \
2926 "How much tracing to do of bytecode escape analysis estimates") \
2927 \
2928 product(intx, MaxBCEAEstimateLevel, 5, \
2929 "Maximum number of nested calls that are analyzed by BC EA") \
2930 \
2931 product(intx, MaxBCEAEstimateSize, 150, \
2932 "Maximum bytecode size of a method to be analyzed by BC EA") \
2933 \
2934 product(intx, AllocatePrefetchStyle, 1, \
2935 "0 = no prefetch, " \
2936 "1 = prefetch instructions for each allocation, " \
2937 "2 = use TLAB watermark to gate allocation prefetch, " \
2938 "3 = use BIS instruction on Sparc for allocation prefetch") \
2939 \
2940 product(intx, AllocatePrefetchDistance, -1, \
2941 "Distance to prefetch ahead of allocation pointer") \
2942 \
2943 product(intx, AllocatePrefetchLines, 3, \
2944 "Number of lines to prefetch ahead of array allocation pointer") \
2945 \
2946 product(intx, AllocateInstancePrefetchLines, 1, \
2947 "Number of lines to prefetch ahead of instance allocation " \
2948 "pointer") \
2949 \
2950 product(intx, AllocatePrefetchStepSize, 16, \
2951 "Step size in bytes of sequential prefetch instructions") \
2952 \
2953 product(intx, AllocatePrefetchInstr, 0, \
2954 "Prefetch instruction to prefetch ahead of allocation pointer") \
2955 \
2956 /* deoptimization */ \
2957 develop(bool, TraceDeoptimization, false, \
2958 "Trace deoptimization") \
2959 \
2960 develop(bool, DebugDeoptimization, false, \
2961 "Tracing various information while debugging deoptimization") \
2962 \
2963 product(intx, SelfDestructTimer, 0, \
2964 "Will cause VM to terminate after a given time (in minutes) " \
2965 "(0 means off)") \
2966 \
2967 product(intx, MaxJavaStackTraceDepth, 1024, \
2968 "The maximum number of lines in the stack trace for Java " \
2969 "exceptions (0 means all)") \
2970 \
2971 NOT_EMBEDDED(diagnostic(intx, GuaranteedSafepointInterval, 1000, \
2972 "Guarantee a safepoint (at least) every so many milliseconds " \
2973 "(0 means none)")) \
2974 \
2975 EMBEDDED_ONLY(product(intx, GuaranteedSafepointInterval, 0, \
2976 "Guarantee a safepoint (at least) every so many milliseconds " \
2977 "(0 means none)")) \
2978 \
2979 product(intx, SafepointTimeoutDelay, 10000, \
2980 "Delay in milliseconds for option SafepointTimeout") \
2981 \
2982 product(intx, NmethodSweepFraction, 16, \
2983 "Number of invocations of sweeper to cover all nmethods") \
2984 \
2985 product(intx, NmethodSweepCheckInterval, 5, \
2986 "Compilers wake up every n seconds to possibly sweep nmethods") \
2987 \
2988 product(intx, NmethodSweepActivity, 10, \
2989 "Removes cold nmethods from code cache if > 0. Higher values " \
2990 "result in more aggressive sweeping") \
2991 \
2992 notproduct(bool, LogSweeper, false, \
2993 "Keep a ring buffer of sweeper activity") \
2994 \
2995 notproduct(intx, SweeperLogEntries, 1024, \
2996 "Number of records in the ring buffer of sweeper activity") \
2997 \
2998 notproduct(intx, MemProfilingInterval, 500, \
2999 "Time between each invocation of the MemProfiler") \
3000 \
3001 develop(intx, MallocCatchPtr, -1, \
3002 "Hit breakpoint when mallocing/freeing this pointer") \
3003 \
3004 notproduct(intx, AssertRepeat, 1, \
3005 "number of times to evaluate expression in assert " \
3006 "(to estimate overhead); only works with -DUSE_REPEATED_ASSERTS") \
3007 \
3008 notproduct(ccstrlist, SuppressErrorAt, "", \
3009 "List of assertions (file:line) to muzzle") \
3010 \
3011 notproduct(uintx, HandleAllocationLimit, 1024, \
3012 "Threshold for HandleMark allocation when +TraceHandleAllocation "\
3013 "is used") \
3014 \
3015 develop(uintx, TotalHandleAllocationLimit, 1024, \
3016 "Threshold for total handle allocation when " \
3017 "+TraceHandleAllocation is used") \
3018 \
3019 develop(intx, StackPrintLimit, 100, \
3020 "number of stack frames to print in VM-level stack dump") \
3021 \
3022 notproduct(intx, MaxElementPrintSize, 256, \
3023 "maximum number of elements to print") \
3024 \
3025 notproduct(intx, MaxSubklassPrintSize, 4, \
3026 "maximum number of subklasses to print when printing klass") \
3027 \
3028 product(intx, MaxInlineLevel, 9, \
3029 "maximum number of nested calls that are inlined") \
3030 \
3031 product(intx, MaxRecursiveInlineLevel, 1, \
3032 "maximum number of nested recursive calls that are inlined") \
3033 \
3034 develop(intx, MaxForceInlineLevel, 100, \
3035 "maximum number of nested calls that are forced for inlining " \
3036 "(using CompilerOracle or marked w/ @ForceInline)") \
3037 \
3038 product_pd(intx, InlineSmallCode, \
3039 "Only inline already compiled methods if their code size is " \
3040 "less than this") \
3041 \
3042 product(intx, MaxInlineSize, 35, \
3043 "The maximum bytecode size of a method to be inlined") \
3044 \
3045 product_pd(intx, FreqInlineSize, \
3046 "The maximum bytecode size of a frequent method to be inlined") \
3047 \
3048 product(intx, MaxTrivialSize, 6, \
3049 "The maximum bytecode size of a trivial method to be inlined") \
3050 \
3051 product(intx, MinInliningThreshold, 250, \
3052 "The minimum invocation count a method needs to have to be " \
3053 "inlined") \
3054 \
3055 develop(intx, MethodHistogramCutoff, 100, \
3056 "The cutoff value for method invocation histogram (+CountCalls)") \
3057 \
3058 develop(intx, ProfilerNumberOfInterpretedMethods, 25, \
3059 "Number of interpreted methods to show in profile") \
3060 \
3061 develop(intx, ProfilerNumberOfCompiledMethods, 25, \
3062 "Number of compiled methods to show in profile") \
3063 \
3064 develop(intx, ProfilerNumberOfStubMethods, 25, \
3065 "Number of stub methods to show in profile") \
3066 \
3067 develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \
3068 "Number of runtime stub nodes to show in profile") \
3069 \
3070 product(intx, ProfileIntervalsTicks, 100, \
3071 "Number of ticks between printing of interval profile " \
3072 "(+ProfileIntervals)") \
3073 \
3074 notproduct(intx, ScavengeALotInterval, 1, \
3075 "Interval between which scavenge will occur with +ScavengeALot") \
3076 \
3077 notproduct(intx, FullGCALotInterval, 1, \
3078 "Interval between which full gc will occur with +FullGCALot") \
3079 \
3080 notproduct(intx, FullGCALotStart, 0, \
3081 "For which invocation to start FullGCAlot") \
3082 \
3083 notproduct(intx, FullGCALotDummies, 32*K, \
3084 "Dummy object allocated with +FullGCALot, forcing all objects " \
3085 "to move") \
3086 \
3087 develop(intx, DontYieldALotInterval, 10, \
3088 "Interval between which yields will be dropped (milliseconds)") \
3089 \
3090 develop(intx, MinSleepInterval, 1, \
3091 "Minimum sleep() interval (milliseconds) when " \
3092 "ConvertSleepToYield is off (used for Solaris)") \
3093 \
3094 develop(intx, ProfilerPCTickThreshold, 15, \
3095 "Number of ticks in a PC buckets to be a hotspot") \
3096 \
3097 notproduct(intx, DeoptimizeALotInterval, 5, \
3098 "Number of exits until DeoptimizeALot kicks in") \
3099 \
3100 notproduct(intx, ZombieALotInterval, 5, \
3101 "Number of exits until ZombieALot kicks in") \
3102 \
3103 diagnostic(intx, MallocVerifyInterval, 0, \
3104 "If non-zero, verify C heap after every N calls to " \
3105 "malloc/realloc/free") \
3106 \
3107 diagnostic(intx, MallocVerifyStart, 0, \
3108 "If non-zero, start verifying C heap after Nth call to " \
3109 "malloc/realloc/free") \
3110 \
3111 diagnostic(uintx, MallocMaxTestWords, 0, \
3112 "If non-zero, maximum number of words that malloc/realloc can " \
3113 "allocate (for testing only)") \
3114 \
3115 product(intx, TypeProfileWidth, 2, \
3116 "Number of receiver types to record in call/cast profile") \
3117 \
3118 develop(intx, BciProfileWidth, 2, \
3119 "Number of return bci's to record in ret profile") \
3120 \
3121 product(intx, PerMethodRecompilationCutoff, 400, \
3122 "After recompiling N times, stay in the interpreter (-1=>'Inf')") \
3123 \
3124 product(intx, PerBytecodeRecompilationCutoff, 200, \
3125 "Per-BCI limit on repeated recompilation (-1=>'Inf')") \
3126 \
3127 product(intx, PerMethodTrapLimit, 100, \
3128 "Limit on traps (of one kind) in a method (includes inlines)") \
3129 \
3130 experimental(intx, PerMethodSpecTrapLimit, 5000, \
3131 "Limit on speculative traps (of one kind) in a method (includes inlines)") \
3132 \
3133 product(intx, PerBytecodeTrapLimit, 4, \
3134 "Limit on traps (of one kind) at a particular BCI") \
3135 \
3136 experimental(intx, SpecTrapLimitExtraEntries, 3, \
3137 "Extra method data trap entries for speculation") \
3138 \
3139 develop(intx, InlineFrequencyRatio, 20, \
3140 "Ratio of call site execution to caller method invocation") \
3141 \
3142 develop_pd(intx, InlineFrequencyCount, \
3143 "Count of call site execution necessary to trigger frequent " \
3144 "inlining") \
3145 \
3146 develop(intx, InlineThrowCount, 50, \
3147 "Force inlining of interpreted methods that throw this often") \
3148 \
3149 develop(intx, InlineThrowMaxSize, 200, \
3150 "Force inlining of throwing methods smaller than this") \
3151 \
3152 develop(intx, ProfilerNodeSize, 1024, \
3153 "Size in K to allocate for the Profile Nodes of each thread") \
3154 \
3155 product_pd(intx, PreInflateSpin, \
3156 "Number of times to spin wait before inflation") \
3157 \
3158 /* gc parameters */ \
3159 product(uintx, InitialHeapSize, 0, \
3160 "Initial heap size (in bytes); zero means use ergonomics") \
3161 \
3162 product(uintx, MaxHeapSize, ScaleForWordSize(96*M), \
3163 "Maximum heap size (in bytes)") \
3164 \
3165 product(uintx, OldSize, ScaleForWordSize(4*M), \
3166 "Initial tenured generation size (in bytes)") \
3167 \
3168 product(uintx, NewSize, ScaleForWordSize(1*M), \
3169 "Initial new generation size (in bytes)") \
3170 \
3171 product(uintx, MaxNewSize, max_uintx, \
3172 "Maximum new generation size (in bytes), max_uintx means set " \
3173 "ergonomically") \
3174 \
3175 product(uintx, PretenureSizeThreshold, 0, \
3176 "Maximum size in bytes of objects allocated in DefNew " \
3177 "generation; zero means no maximum") \
3178 \
3179 product(uintx, TLABSize, 0, \
3180 "Starting TLAB size (in bytes); zero means set ergonomically") \
3181 \
3182 product(uintx, MinTLABSize, 2*K, \
3183 "Minimum allowed TLAB size (in bytes)") \
3184 \
3185 product(uintx, TLABAllocationWeight, 35, \
3186 "Allocation averaging weight") \
3187 \
3188 product(uintx, TLABWasteTargetPercent, 1, \
3189 "Percentage of Eden that can be wasted") \
3190 \
3191 product(uintx, TLABRefillWasteFraction, 64, \
3192 "Maximum TLAB waste at a refill (internal fragmentation)") \
3193 \
3194 product(uintx, TLABWasteIncrement, 4, \
3195 "Increment allowed waste at slow allocation") \
3196 \
3197 product(uintx, SurvivorRatio, 8, \
3198 "Ratio of eden/survivor space size") \
3199 \
3200 product(uintx, NewRatio, 2, \
3201 "Ratio of old/new generation sizes") \
3202 \
3203 product_pd(uintx, NewSizeThreadIncrease, \
3204 "Additional size added to desired new generation size per " \
3205 "non-daemon thread (in bytes)") \
3206 \
3207 product_pd(uintx, MetaspaceSize, \
3208 "Initial size of Metaspaces (in bytes)") \
3209 \
3210 product(uintx, MaxMetaspaceSize, max_uintx, \
3211 "Maximum size of Metaspaces (in bytes)") \
3212 \
3213 product(uintx, CompressedClassSpaceSize, 1*G, \
3214 "Maximum size of class area in Metaspace when compressed " \
3215 "class pointers are used") \
3216 \
3217 manageable(uintx, MinHeapFreeRatio, 40, \
3218 "The minimum percentage of heap free after GC to avoid expansion."\
3219 " For most GCs this applies to the old generation. In G1 and" \
3220 " ParallelGC it applies to the whole heap.") \
3221 \
3222 manageable(uintx, MaxHeapFreeRatio, 70, \
3223 "The maximum percentage of heap free after GC to avoid shrinking."\
3224 " For most GCs this applies to the old generation. In G1 and" \
3225 " ParallelGC it applies to the whole heap.") \
3226 \
3227 product(intx, SoftRefLRUPolicyMSPerMB, 1000, \
3228 "Number of milliseconds per MB of free space in the heap") \
3229 \
3230 product(uintx, MinHeapDeltaBytes, ScaleForWordSize(128*K), \
3231 "The minimum change in heap space due to GC (in bytes)") \
3232 \
3233 product(uintx, MinMetaspaceExpansion, ScaleForWordSize(256*K), \
3234 "The minimum expansion of Metaspace (in bytes)") \
3235 \
3236 product(uintx, MinMetaspaceFreeRatio, 40, \
3237 "The minimum percentage of Metaspace free after GC to avoid " \
3238 "expansion") \
3239 \
3240 product(uintx, MaxMetaspaceFreeRatio, 70, \
3241 "The maximum percentage of Metaspace free after GC to avoid " \
3242 "shrinking") \
3243 \
3244 product(uintx, MaxMetaspaceExpansion, ScaleForWordSize(4*M), \
3245 "The maximum expansion of Metaspace without full GC (in bytes)") \
3246 \
3247 product(uintx, QueuedAllocationWarningCount, 0, \
3248 "Number of times an allocation that queues behind a GC " \
3249 "will retry before printing a warning") \
3250 \
3251 diagnostic(uintx, VerifyGCStartAt, 0, \
3252 "GC invoke count where +VerifyBefore/AfterGC kicks in") \
3253 \
3254 diagnostic(intx, VerifyGCLevel, 0, \
3255 "Generation level at which to start +VerifyBefore/AfterGC") \
3256 \
3257 product(uintx, MaxTenuringThreshold, 15, \
3258 "Maximum value for tenuring threshold") \
3259 \
3260 product(uintx, InitialTenuringThreshold, 7, \
3261 "Initial value for tenuring threshold") \
3262 \
3263 product(uintx, TargetSurvivorRatio, 50, \
3264 "Desired percentage of survivor space used after scavenge") \
3265 \
3266 product(uintx, MarkSweepDeadRatio, 5, \
3267 "Percentage (0-100) of the old gen allowed as dead wood. " \
3268 "Serial mark sweep treats this as both the minimum and maximum " \
3269 "value. " \
3270 "CMS uses this value only if it falls back to mark sweep. " \
3271 "Par compact uses a variable scale based on the density of the " \
3272 "generation and treats this as the maximum value when the heap " \
3273 "is either completely full or completely empty. Par compact " \
3274 "also has a smaller default value; see arguments.cpp.") \
3275 \
3276 product(uintx, MarkSweepAlwaysCompactCount, 4, \
3277 "How often should we fully compact the heap (ignoring the dead " \
3278 "space parameters)") \
3279 \
3280 product(intx, PrintCMSStatistics, 0, \
3281 "Statistics for CMS") \
3282 \
3283 product(bool, PrintCMSInitiationStatistics, false, \
3284 "Statistics for initiating a CMS collection") \
3285 \
3286 product(intx, PrintFLSStatistics, 0, \
3287 "Statistics for CMS' FreeListSpace") \
3288 \
3289 product(intx, PrintFLSCensus, 0, \
3290 "Census for CMS' FreeListSpace") \
3291 \
3292 develop(uintx, GCExpandToAllocateDelayMillis, 0, \
3293 "Delay between expansion and allocation (in milliseconds)") \
3294 \
3295 develop(uintx, GCWorkerDelayMillis, 0, \
3296 "Delay in scheduling GC workers (in milliseconds)") \
3297 \
3298 product(intx, DeferThrSuspendLoopCount, 4000, \
3299 "(Unstable) Number of times to iterate in safepoint loop " \
3300 "before blocking VM threads ") \
3301 \
3302 product(intx, DeferPollingPageLoopCount, -1, \
3303 "(Unsafe,Unstable) Number of iterations in safepoint loop " \
3304 "before changing safepoint polling page to RO ") \
3305 \
3306 product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \
3307 \
3308 product(bool, PSChunkLargeArrays, true, \
3309 "Process large arrays in chunks") \
3310 \
3311 product(uintx, GCDrainStackTargetSize, 64, \
3312 "Number of entries we will try to leave on the stack " \
3313 "during parallel gc") \
3314 \
3315 /* stack parameters */ \
3316 product_pd(intx, StackYellowPages, \
3317 "Number of yellow zone (recoverable overflows) pages") \
3318 \
3319 product_pd(intx, StackRedPages, \
3320 "Number of red zone (unrecoverable overflows) pages") \
3321 \
3322 product_pd(intx, StackShadowPages, \
3323 "Number of shadow zone (for overflow checking) pages " \
3324 "this should exceed the depth of the VM and native call stack") \
3325 \
3326 product_pd(intx, ThreadStackSize, \
3327 "Thread Stack Size (in Kbytes)") \
3328 \
3329 product_pd(intx, VMThreadStackSize, \
3330 "Non-Java Thread Stack Size (in Kbytes)") \
3331 \
3332 product_pd(intx, CompilerThreadStackSize, \
3333 "Compiler Thread Stack Size (in Kbytes)") \
3334 \
3335 develop_pd(uintx, JVMInvokeMethodSlack, \
3336 "Stack space (bytes) required for JVM_InvokeMethod to complete") \
3337 \
3338 product(uintx, ThreadSafetyMargin, 50*M, \
3339 "Thread safety margin is used on fixed-stack LinuxThreads (on " \
3340 "Linux/x86 only) to prevent heap-stack collision. Set to 0 to " \
3341 "disable this feature") \
3342 \
3343 /* code cache parameters */ \
3344 /* ppc64/tiered compilation has large code-entry alignment. */ \
3345 develop(uintx, CodeCacheSegmentSize, 64 PPC64_ONLY(+64) NOT_PPC64(TIERED_ONLY(+64)),\
3346 "Code cache segment size (in bytes) - smallest unit of " \
3347 "allocation") \
3348 \
3349 develop_pd(intx, CodeEntryAlignment, \
3350 "Code entry alignment for generated code (in bytes)") \
3351 \
3352 product_pd(intx, OptoLoopAlignment, \
3353 "Align inner loops to zero relative to this modulus") \
3354 \
3355 product_pd(uintx, InitialCodeCacheSize, \
3356 "Initial code cache size (in bytes)") \
3357 \
3358 develop_pd(uintx, CodeCacheMinimumUseSpace, \
3359 "Minimum code cache size (in bytes) required to start VM.") \
3360 \
3361 product(bool, SegmentedCodeCache, false, \
3362 "Use a segmented code cache") \
3363 \
3364 product_pd(uintx, ReservedCodeCacheSize, \
3365 "Reserved code cache size (in bytes) - maximum code cache size") \
3366 \
3367 product_pd(uintx, NonProfiledCodeHeapSize, \
3368 "Size of code heap with non-profiled methods (in bytes)") \
3369 \
3370 product_pd(uintx, ProfiledCodeHeapSize, \
3371 "Size of code heap with profiled methods (in bytes)") \
3372 \
3373 product_pd(uintx, NonMethodCodeHeapSize, \
3374 "Size of code heap with non-methods (in bytes)") \
3375 \
3376 product(uintx, CodeCacheMinimumFreeSpace, 500*K, \
3377 "When less than X space left, we stop compiling") \
3378 \
3379 product_pd(uintx, CodeCacheExpansionSize, \
3380 "Code cache expansion size (in bytes)") \
3381 \
3382 develop_pd(uintx, CodeCacheMinBlockLength, \
3383 "Minimum number of segments in a code cache block") \
3384 \
3385 notproduct(bool, ExitOnFullCodeCache, false, \
3386 "Exit the VM if we fill the code cache") \
3387 \
3388 product(bool, UseCodeCacheFlushing, true, \
3389 "Remove cold/old nmethods from the code cache") \
3390 \
3391 /* interpreter debugging */ \
3392 develop(intx, BinarySwitchThreshold, 5, \
3393 "Minimal number of lookupswitch entries for rewriting to binary " \
3394 "switch") \
3395 \
3396 develop(intx, StopInterpreterAt, 0, \
3397 "Stop interpreter execution at specified bytecode number") \
3398 \
3399 develop(intx, TraceBytecodesAt, 0, \
3400 "Trace bytecodes starting with specified bytecode number") \
3401 \
3402 /* compiler interface */ \
3403 develop(intx, CIStart, 0, \
3404 "The id of the first compilation to permit") \
3405 \
3406 develop(intx, CIStop, max_jint, \
3407 "The id of the last compilation to permit") \
3408 \
3409 develop(intx, CIStartOSR, 0, \
3410 "The id of the first osr compilation to permit " \
3411 "(CICountOSR must be on)") \
3412 \
3413 develop(intx, CIStopOSR, max_jint, \
3414 "The id of the last osr compilation to permit " \
3415 "(CICountOSR must be on)") \
3416 \
3417 develop(intx, CIBreakAtOSR, -1, \
3418 "The id of osr compilation to break at") \
3419 \
3420 develop(intx, CIBreakAt, -1, \
3421 "The id of compilation to break at") \
3422 \
3423 product(ccstrlist, CompileOnly, "", \
3424 "List of methods (pkg/class.name) to restrict compilation to") \
3425 \
3426 product(ccstr, CompileCommandFile, NULL, \
3427 "Read compiler commands from this file [.hotspot_compiler]") \
3428 \
3429 product(ccstrlist, CompileCommand, "", \
3430 "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \
3431 \
3432 develop(bool, ReplayCompiles, false, \
3433 "Enable replay of compilations from ReplayDataFile") \
3434 \
3435 product(ccstr, ReplayDataFile, NULL, \
3436 "File containing compilation replay information" \
3437 "[default: ./replay_pid%p.log] (%p replaced with pid)") \
3438 \
3439 product(ccstr, InlineDataFile, NULL, \
3440 "File containing inlining replay information" \
3441 "[default: ./inline_pid%p.log] (%p replaced with pid)") \
3442 \
3443 develop(intx, ReplaySuppressInitializers, 2, \
3444 "Control handling of class initialization during replay: " \
3445 "0 - don't do anything special; " \
3446 "1 - treat all class initializers as empty; " \
3447 "2 - treat class initializers for application classes as empty; " \
3448 "3 - allow all class initializers to run during bootstrap but " \
3449 " pretend they are empty after starting replay") \
3450 \
3451 develop(bool, ReplayIgnoreInitErrors, false, \
3452 "Ignore exceptions thrown during initialization for replay") \
3453 \
3454 product(bool, DumpReplayDataOnError, true, \
3455 "Record replay data for crashing compiler threads") \
3456 \
3457 product(bool, CICompilerCountPerCPU, false, \
3458 "1 compiler thread for log(N CPUs)") \
3459 \
3460 develop(intx, CIFireOOMAt, -1, \
3461 "Fire OutOfMemoryErrors throughout CI for testing the compiler " \
3462 "(non-negative value throws OOM after this many CI accesses " \
3463 "in each compile)") \
3464 notproduct(intx, CICrashAt, -1, \
3465 "id of compilation to trigger assert in compiler thread for " \
3466 "the purpose of testing, e.g. generation of replay data") \
3467 notproduct(bool, CIObjectFactoryVerify, false, \
3468 "enable potentially expensive verification in ciObjectFactory") \
3469 \
3470 /* Priorities */ \
3471 product_pd(bool, UseThreadPriorities, "Use native thread priorities") \
3472 \
3473 product(intx, ThreadPriorityPolicy, 0, \
3474 "0 : Normal. "\
3475 " VM chooses priorities that are appropriate for normal "\
3476 " applications. On Solaris NORM_PRIORITY and above are mapped "\
3477 " to normal native priority. Java priorities below " \
3478 " NORM_PRIORITY map to lower native priority values. On "\
3479 " Windows applications are allowed to use higher native "\
3480 " priorities. However, with ThreadPriorityPolicy=0, VM will "\
3481 " not use the highest possible native priority, "\
3482 " THREAD_PRIORITY_TIME_CRITICAL, as it may interfere with "\
3483 " system threads. On Linux thread priorities are ignored "\
3484 " because the OS does not support static priority in "\
3485 " SCHED_OTHER scheduling class which is the only choice for "\
3486 " non-root, non-realtime applications. "\
3487 "1 : Aggressive. "\
3488 " Java thread priorities map over to the entire range of "\
3489 " native thread priorities. Higher Java thread priorities map "\
3490 " to higher native thread priorities. This policy should be "\
3491 " used with care, as sometimes it can cause performance "\
3492 " degradation in the application and/or the entire system. On "\
3493 " Linux this policy requires root privilege.") \
3494 \
3495 product(bool, ThreadPriorityVerbose, false, \
3496 "Print priority changes") \
3497 \
3498 product(intx, DefaultThreadPriority, -1, \
3499 "The native priority at which threads run if not elsewhere " \
3500 "specified (-1 means no change)") \
3501 \
3502 product(intx, CompilerThreadPriority, -1, \
3503 "The native priority at which compiler threads should run " \
3504 "(-1 means no change)") \
3505 \
3506 product(intx, VMThreadPriority, -1, \
3507 "The native priority at which the VM thread should run " \
3508 "(-1 means no change)") \
3509 \
3510 product(bool, CompilerThreadHintNoPreempt, true, \
3511 "(Solaris only) Give compiler threads an extra quanta") \
3512 \
3513 product(bool, VMThreadHintNoPreempt, false, \
3514 "(Solaris only) Give VM thread an extra quanta") \
3515 \
3516 product(intx, JavaPriority1_To_OSPriority, -1, \
3517 "Map Java priorities to OS priorities") \
3518 \
3519 product(intx, JavaPriority2_To_OSPriority, -1, \
3520 "Map Java priorities to OS priorities") \
3521 \
3522 product(intx, JavaPriority3_To_OSPriority, -1, \
3523 "Map Java priorities to OS priorities") \
3524 \
3525 product(intx, JavaPriority4_To_OSPriority, -1, \
3526 "Map Java priorities to OS priorities") \
3527 \
3528 product(intx, JavaPriority5_To_OSPriority, -1, \
3529 "Map Java priorities to OS priorities") \
3530 \
3531 product(intx, JavaPriority6_To_OSPriority, -1, \
3532 "Map Java priorities to OS priorities") \
3533 \
3534 product(intx, JavaPriority7_To_OSPriority, -1, \
3535 "Map Java priorities to OS priorities") \
3536 \
3537 product(intx, JavaPriority8_To_OSPriority, -1, \
3538 "Map Java priorities to OS priorities") \
3539 \
3540 product(intx, JavaPriority9_To_OSPriority, -1, \
3541 "Map Java priorities to OS priorities") \
3542 \
3543 product(intx, JavaPriority10_To_OSPriority,-1, \
3544 "Map Java priorities to OS priorities") \
3545 \
3546 experimental(bool, UseCriticalJavaThreadPriority, false, \
3547 "Java thread priority 10 maps to critical scheduling priority") \
3548 \
3549 experimental(bool, UseCriticalCompilerThreadPriority, false, \
3550 "Compiler thread(s) run at critical scheduling priority") \
3551 \
3552 experimental(bool, UseCriticalCMSThreadPriority, false, \
3553 "ConcurrentMarkSweep thread runs at critical scheduling priority")\
3554 \
3555 /* compiler debugging */ \
3556 notproduct(intx, CompileTheWorldStartAt, 1, \
3557 "First class to consider when using +CompileTheWorld") \
3558 \
3559 notproduct(intx, CompileTheWorldStopAt, max_jint, \
3560 "Last class to consider when using +CompileTheWorld") \
3561 \
3562 develop(intx, NewCodeParameter, 0, \
3563 "Testing Only: Create a dedicated integer parameter before " \
3564 "putback") \
3565 \
3566 /* new oopmap storage allocation */ \
3567 develop(intx, MinOopMapAllocation, 8, \
3568 "Minimum number of OopMap entries in an OopMapSet") \
3569 \
3570 /* Background Compilation */ \
3571 develop(intx, LongCompileThreshold, 50, \
3572 "Used with +TraceLongCompiles") \
3573 \
3574 product(intx, StarvationMonitorInterval, 200, \
3575 "Pause between each check (in milliseconds)") \
3576 \
3577 /* recompilation */ \
3578 product_pd(intx, CompileThreshold, \
3579 "number of interpreted method invocations before (re-)compiling") \
3580 \
3581 product(intx, Tier0InvokeNotifyFreqLog, 7, \
3582 "Interpreter (tier 0) invocation notification frequency") \
3583 \
3584 product(intx, Tier2InvokeNotifyFreqLog, 11, \
3585 "C1 without MDO (tier 2) invocation notification frequency") \
3586 \
3587 product(intx, Tier3InvokeNotifyFreqLog, 10, \
3588 "C1 with MDO profiling (tier 3) invocation notification " \
3589 "frequency") \
3590 \
3591 product(intx, Tier23InlineeNotifyFreqLog, 20, \
3592 "Inlinee invocation (tiers 2 and 3) notification frequency") \
3593 \
3594 product(intx, Tier0BackedgeNotifyFreqLog, 10, \
3595 "Interpreter (tier 0) invocation notification frequency") \
3596 \
3597 product(intx, Tier2BackedgeNotifyFreqLog, 14, \
3598 "C1 without MDO (tier 2) invocation notification frequency") \
3599 \
3600 product(intx, Tier3BackedgeNotifyFreqLog, 13, \
3601 "C1 with MDO profiling (tier 3) invocation notification " \
3602 "frequency") \
3603 \
3604 product(intx, Tier2CompileThreshold, 0, \
3605 "threshold at which tier 2 compilation is invoked") \
3606 \
3607 product(intx, Tier2BackEdgeThreshold, 0, \
3608 "Back edge threshold at which tier 2 compilation is invoked") \
3609 \
3610 product(intx, Tier3InvocationThreshold, 200, \
3611 "Compile if number of method invocations crosses this " \
3612 "threshold") \
3613 \
3614 product(intx, Tier3MinInvocationThreshold, 100, \
3615 "Minimum invocation to compile at tier 3") \
3616 \
3617 product(intx, Tier3CompileThreshold, 2000, \
3618 "Threshold at which tier 3 compilation is invoked (invocation " \
3619 "minimum must be satisfied") \
3620 \
3621 product(intx, Tier3BackEdgeThreshold, 60000, \
3622 "Back edge threshold at which tier 3 OSR compilation is invoked") \
3623 \
3624 product(intx, Tier4InvocationThreshold, 5000, \
3625 "Compile if number of method invocations crosses this " \
3626 "threshold") \
3627 \
3628 product(intx, Tier4MinInvocationThreshold, 600, \
3629 "Minimum invocation to compile at tier 4") \
3630 \
3631 product(intx, Tier4CompileThreshold, 15000, \
3632 "Threshold at which tier 4 compilation is invoked (invocation " \
3633 "minimum must be satisfied") \
3634 \
3635 product(intx, Tier4BackEdgeThreshold, 40000, \
3636 "Back edge threshold at which tier 4 OSR compilation is invoked") \
3637 \
3638 product(intx, Tier3DelayOn, 5, \
3639 "If C2 queue size grows over this amount per compiler thread " \
3640 "stop compiling at tier 3 and start compiling at tier 2") \
3641 \
3642 product(intx, Tier3DelayOff, 2, \
3643 "If C2 queue size is less than this amount per compiler thread " \
3644 "allow methods compiled at tier 2 transition to tier 3") \
3645 \
3646 product(intx, Tier3LoadFeedback, 5, \
3647 "Tier 3 thresholds will increase twofold when C1 queue size " \
3648 "reaches this amount per compiler thread") \
3649 \
3650 product(intx, Tier4LoadFeedback, 3, \
3651 "Tier 4 thresholds will increase twofold when C2 queue size " \
3652 "reaches this amount per compiler thread") \
3653 \
3654 product(intx, TieredCompileTaskTimeout, 50, \
3655 "Kill compile task if method was not used within " \
3656 "given timeout in milliseconds") \
3657 \
3658 product(intx, TieredStopAtLevel, 4, \
3659 "Stop at given compilation level") \
3660 \
3661 product(intx, Tier0ProfilingStartPercentage, 200, \
3662 "Start profiling in interpreter if the counters exceed tier 3 " \
3663 "thresholds by the specified percentage") \
3664 \
3665 product(uintx, IncreaseFirstTierCompileThresholdAt, 50, \
3666 "Increase the compile threshold for C1 compilation if the code " \
3667 "cache is filled by the specified percentage") \
3668 \
3669 product(intx, TieredRateUpdateMinTime, 1, \
3670 "Minimum rate sampling interval (in milliseconds)") \
3671 \
3672 product(intx, TieredRateUpdateMaxTime, 25, \
3673 "Maximum rate sampling interval (in milliseconds)") \
3674 \
3675 product_pd(bool, TieredCompilation, \
3676 "Enable tiered compilation") \
3677 \
3678 product(bool, PrintTieredEvents, false, \
3679 "Print tiered events notifications") \
3680 \
3681 product_pd(intx, OnStackReplacePercentage, \
3682 "NON_TIERED number of method invocations/branches (expressed as " \
3683 "% of CompileThreshold) before (re-)compiling OSR code") \
3684 \
3685 product(intx, InterpreterProfilePercentage, 33, \
3686 "NON_TIERED number of method invocations/branches (expressed as " \
3687 "% of CompileThreshold) before profiling in the interpreter") \
3688 \
3689 develop(intx, MaxRecompilationSearchLength, 10, \
3690 "The maximum number of frames to inspect when searching for " \
3691 "recompilee") \
3692 \
3693 develop(intx, MaxInterpretedSearchLength, 3, \
3694 "The maximum number of interpreted frames to skip when searching "\
3695 "for recompilee") \
3696 \
3697 develop(intx, DesiredMethodLimit, 8000, \
3698 "The desired maximum method size (in bytecodes) after inlining") \
3699 \
3700 develop(intx, HugeMethodLimit, 8000, \
3701 "Don't compile methods larger than this if " \
3702 "+DontCompileHugeMethods") \
3703 \
3704 /* New JDK 1.4 reflection implementation */ \
3705 \
3706 develop(intx, FastSuperclassLimit, 8, \
3707 "Depth of hardwired instanceof accelerator array") \
3708 \
3709 /* Properties for Java libraries */ \
3710 \
3711 product(uintx, MaxDirectMemorySize, 0, \
3712 "Maximum total size of NIO direct-buffer allocations") \
3713 \
3714 /* Flags used for temporary code during development */ \
3715 \
3716 diagnostic(bool, UseNewCode, false, \
3717 "Testing Only: Use the new version while testing") \
3718 \
3719 diagnostic(bool, UseNewCode2, false, \
3720 "Testing Only: Use the new version while testing") \
3721 \
3722 diagnostic(bool, UseNewCode3, false, \
3723 "Testing Only: Use the new version while testing") \
3724 \
3725 /* flags for performance data collection */ \
3726 \
3727 product(bool, UsePerfData, falseInEmbedded, \
3728 "Flag to disable jvmstat instrumentation for performance testing "\
3729 "and problem isolation purposes") \
3730 \
3731 product(bool, PerfDataSaveToFile, false, \
3732 "Save PerfData memory to hsperfdata_<pid> file on exit") \
3733 \
3734 product(ccstr, PerfDataSaveFile, NULL, \
3735 "Save PerfData memory to the specified absolute pathname. " \
3736 "The string %p in the file name (if present) " \
3737 "will be replaced by pid") \
3738 \
3739 product(intx, PerfDataSamplingInterval, 50, \
3740 "Data sampling interval (in milliseconds)") \
3741 \
3742 develop(bool, PerfTraceDataCreation, false, \
3743 "Trace creation of Performance Data Entries") \
3744 \
3745 develop(bool, PerfTraceMemOps, false, \
3746 "Trace PerfMemory create/attach/detach calls") \
3747 \
3748 product(bool, PerfDisableSharedMem, false, \
3749 "Store performance data in standard memory") \
3750 \
3751 product(intx, PerfDataMemorySize, 32*K, \
3752 "Size of performance data memory region. Will be rounded " \
3753 "up to a multiple of the native os page size.") \
3754 \
3755 product(intx, PerfMaxStringConstLength, 1024, \
3756 "Maximum PerfStringConstant string length before truncation") \
3757 \
3758 product(bool, PerfAllowAtExitRegistration, false, \
3759 "Allow registration of atexit() methods") \
3760 \
3761 product(bool, PerfBypassFileSystemCheck, false, \
3762 "Bypass Win32 file system criteria checks (Windows Only)") \
3763 \
3764 product(intx, UnguardOnExecutionViolation, 0, \
3765 "Unguard page and retry on no-execute fault (Win32 only) " \
3766 "0=off, 1=conservative, 2=aggressive") \
3767 \
3768 /* Serviceability Support */ \
3769 \
3770 product(bool, ManagementServer, false, \
3771 "Create JMX Management Server") \
3772 \
3773 product(bool, DisableAttachMechanism, false, \
3774 "Disable mechanism that allows tools to attach to this VM") \
3775 \
3776 product(bool, StartAttachListener, false, \
3777 "Always start Attach Listener at VM startup") \
3778 \
3779 manageable(bool, PrintConcurrentLocks, false, \
3780 "Print java.util.concurrent locks in thread dump") \
3781 \
3782 product(bool, TransmitErrorReport, false, \
3783 "Enable error report transmission on erroneous termination") \
3784 \
3785 product(ccstr, ErrorReportServer, NULL, \
3786 "Override built-in error report server address") \
3787 \
3788 /* Shared spaces */ \
3789 \
3790 product(bool, UseSharedSpaces, true, \
3791 "Use shared spaces for metadata") \
3792 \
3793 product(bool, RequireSharedSpaces, false, \
3794 "Require shared spaces for metadata") \
3795 \
3796 product(bool, DumpSharedSpaces, false, \
3797 "Special mode: JVM reads a class list, loads classes, builds " \
3798 "shared spaces, and dumps the shared spaces to a file to be " \
3799 "used in future JVM runs") \
3800 \
3801 product(bool, PrintSharedSpaces, false, \
3802 "Print usage of shared spaces") \
3803 \
3804 product(bool, PrintSharedArchiveAndExit, false, \
3805 "Print shared archive file contents") \
3806 \
3807 product(bool, PrintSharedDictionary, false, \
3808 "If PrintSharedArchiveAndExit is true, also print the shared " \
3809 "dictionary") \
3810 \
3811 product(uintx, SharedReadWriteSize, NOT_LP64(12*M) LP64_ONLY(16*M), \
3812 "Size of read-write space for metadata (in bytes)") \
3813 \
3814 product(uintx, SharedReadOnlySize, NOT_LP64(12*M) LP64_ONLY(16*M), \
3815 "Size of read-only space for metadata (in bytes)") \
3816 \
3817 product(uintx, SharedMiscDataSize, NOT_LP64(2*M) LP64_ONLY(4*M), \
3818 "Size of the shared miscellaneous data area (in bytes)") \
3819 \
3820 product(uintx, SharedMiscCodeSize, 120*K, \
3821 "Size of the shared miscellaneous code area (in bytes)") \
3822 \
3823 product(uintx, SharedBaseAddress, LP64_ONLY(32*G) \
3824 NOT_LP64(LINUX_ONLY(2*G) NOT_LINUX(0)), \
3825 "Address to allocate shared memory region for class data") \
3826 \
3827 diagnostic(bool, IgnoreUnverifiableClassesDuringDump, false, \
3828 "Do not quit -Xshare:dump even if we encounter unverifiable " \
3829 "classes. Just exclude them from the shared dictionary.") \
3830 \
3831 diagnostic(bool, PrintMethodHandleStubs, false, \
3832 "Print generated stub code for method handles") \
3833 \
3834 develop(bool, TraceMethodHandles, false, \
3835 "trace internal method handle operations") \
3836 \
3837 diagnostic(bool, VerifyMethodHandles, trueInDebug, \
3838 "perform extra checks when constructing method handles") \
3839 \
3840 diagnostic(bool, ShowHiddenFrames, false, \
3841 "show method handle implementation frames (usually hidden)") \
3842 \
3843 experimental(bool, TrustFinalNonStaticFields, false, \
3844 "trust final non-static declarations for constant folding") \
3845 \
3846 diagnostic(bool, FoldStableValues, true, \
3847 "Optimize loads from stable fields (marked w/ @Stable)") \
3848 \
3849 develop(bool, TraceInvokeDynamic, false, \
3850 "trace internal invoke dynamic operations") \
3851 \
3852 diagnostic(bool, PauseAtStartup, false, \
3853 "Causes the VM to pause at startup time and wait for the pause " \
3854 "file to be removed (default: ./vm.paused.<pid>)") \
3855 \
3856 diagnostic(ccstr, PauseAtStartupFile, NULL, \
3857 "The file to create and for whose removal to await when pausing " \
3858 "at startup. (default: ./vm.paused.<pid>)") \
3859 \
3860 diagnostic(bool, PauseAtExit, false, \
3861 "Pause and wait for keypress on exit if a debugger is attached") \
3862 \
3863 product(bool, ExtendedDTraceProbes, false, \
3864 "Enable performance-impacting dtrace probes") \
3865 \
3866 product(bool, DTraceMethodProbes, false, \
3867 "Enable dtrace probes for method-entry and method-exit") \
3868 \
3869 product(bool, DTraceAllocProbes, false, \
3870 "Enable dtrace probes for object allocation") \
3871 \
3872 product(bool, DTraceMonitorProbes, false, \
3873 "Enable dtrace probes for monitor events") \
3874 \
3875 product(bool, RelaxAccessControlCheck, false, \
3876 "Relax the access control checks in the verifier") \
3877 \
3878 diagnostic(bool, PrintDTraceDOF, false, \
3879 "Print the DTrace DOF passed to the system for JSDT probes") \
3880 \
3881 product(uintx, StringTableSize, defaultStringTableSize, \
3882 "Number of buckets in the interned String table") \
3883 \
3884 experimental(uintx, SymbolTableSize, defaultSymbolTableSize, \
3885 "Number of buckets in the JVM internal Symbol table") \
3886 \
3887 product(bool, UseStringDeduplication, false, \
3888 "Use string deduplication") \
3889 \
3890 product(bool, PrintStringDeduplicationStatistics, false, \
3891 "Print string deduplication statistics") \
3892 \
3893 product(uintx, StringDeduplicationAgeThreshold, 3, \
3894 "A string must reach this age (or be promoted to an old region) " \
3895 "to be considered for deduplication") \
3896 \
3897 diagnostic(bool, StringDeduplicationResizeALot, false, \
3898 "Force table resize every time the table is scanned") \
3899 \
3900 diagnostic(bool, StringDeduplicationRehashALot, false, \
3901 "Force table rehash every time the table is scanned") \
3902 \
3903 develop(bool, TraceDefaultMethods, false, \
3904 "Trace the default method processing steps") \
3905 \
3906 develop(bool, VerifyGenericSignatures, false, \
3907 "Abort VM on erroneous or inconsistent generic signatures") \
3908 \
3909 diagnostic(bool, WhiteBoxAPI, false, \
3910 "Enable internal testing APIs") \
3911 \
3912 product(bool, PrintGCCause, true, \
3913 "Include GC cause in GC logging") \
3914 \
3915 experimental(intx, SurvivorAlignmentInBytes, 0, \
3916 "Default survivor space alignment in bytes") \
3917 \
3918 product(bool , AllowNonVirtualCalls, false, \
3919 "Obey the ACC_SUPER flag and allow invokenonvirtual calls") \
3920 \
3921 product(ccstr, DumpLoadedClassList, NULL, \
3922 "Dump the names all loaded classes, that could be stored into " \
3923 "the CDS archive, in the specified file") \
3924 \
3925 product(ccstr, SharedClassListFile, NULL, \
3926 "Override the default CDS class list") \
3927 \
3928 diagnostic(ccstr, SharedArchiveFile, NULL, \
3929 "Override the default location of the CDS archive file") \
3930 \
3931 product(ccstr, ExtraSharedClassListFile, NULL, \
3932 "Extra classlist for building the CDS archive file") \
3933 \
3934 experimental(size_t, ArrayAllocatorMallocLimit, \
3935 SOLARIS_ONLY(64*K) NOT_SOLARIS((size_t)-1), \
3936 "Allocation less than this value will be allocated " \
3937 "using malloc. Larger allocations will use mmap.") \
3938 \
3939 experimental(bool, AlwaysAtomicAccesses, false, \
3940 "Accesses to all variables should always be atomic") \
3941 \
3942 product(bool, EnableTracing, false, \
3943 "Enable event-based tracing") \
3944 \
3945 product(bool, UseLockedTracing, false, \
3946 "Use locked-tracing when doing event-based tracing")
3947
3948 /*
3949 * Macros for factoring of globals
3950 */
3951
3952 // Interface macros
3953 #define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name;
3954 #define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name;
3955 #define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name;
3956 #define DECLARE_EXPERIMENTAL_FLAG(type, name, value, doc) extern "C" type name;
3957 #define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name;
3958 #define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name;
3959 #ifdef PRODUCT
3960 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type CONST_##name; const type name = value;
3961 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type CONST_##name; const type name = pd_##name;
3962 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type CONST_##name;
3963 #else
3964 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name;
3965 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name;
3966 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name;
3967 #endif
3968 // Special LP64 flags, product only needed for now.
3969 #ifdef _LP64
3970 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) extern "C" type name;
3971 #else
3972 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) const type name = value;
3973 #endif // _LP64
3974
3975 // Implementation macros
3976 #define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value;
3977 #define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name;
3978 #define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value;
3979 #define MATERIALIZE_EXPERIMENTAL_FLAG(type, name, value, doc) type name = value;
3980 #define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value;
3981 #define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value;
3982 #ifdef PRODUCT
3983 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type CONST_##name = value;
3984 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type CONST_##name = pd_##name;
3985 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type CONST_##name = value;
3986 #else
3987 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value;
3988 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name;
3989 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value;
3990 #endif
3991 #ifdef _LP64
3992 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) type name = value;
3993 #else
3994 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) /* flag is constant */
3995 #endif // _LP64
3996
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)
3998
3999 RUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG)
4000
4001 ARCH_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_EXPERIMENTAL_FLAG, DECLARE_NOTPRODUCT_FLAG)
4002
4003 // Extensions
4004
4005 #include "runtime/globals_ext.hpp"
4006
4007 #endif // SHARE_VM_RUNTIME_GLOBALS_HPP