1 /*
2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
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_bsd
65 # include "globals_bsd.hpp"
66 #endif
67 #ifdef TARGET_OS_ARCH_linux_x86
68 # include "globals_linux_x86.hpp"
69 #endif
70 #ifdef TARGET_OS_ARCH_linux_sparc
71 # include "globals_linux_sparc.hpp"
72 #endif
73 #ifdef TARGET_OS_ARCH_linux_zero
74 # include "globals_linux_zero.hpp"
75 #endif
76 #ifdef TARGET_OS_ARCH_solaris_x86
77 # include "globals_solaris_x86.hpp"
78 #endif
79 #ifdef TARGET_OS_ARCH_solaris_sparc
80 # include "globals_solaris_sparc.hpp"
81 #endif
82 #ifdef TARGET_OS_ARCH_windows_x86
83 # include "globals_windows_x86.hpp"
84 #endif
85 #ifdef TARGET_OS_ARCH_linux_arm
86 # include "globals_linux_arm.hpp"
87 #endif
88 #ifdef TARGET_OS_ARCH_linux_ppc
89 # include "globals_linux_ppc.hpp"
90 #endif
91 #ifdef TARGET_OS_ARCH_bsd_x86
92 # include "globals_bsd_x86.hpp"
93 #endif
94 #ifdef TARGET_OS_ARCH_bsd_zero
95 # include "globals_bsd_zero.hpp"
96 #endif
97 #ifdef COMPILER1
98 #ifdef TARGET_ARCH_x86
99 # include "c1_globals_x86.hpp"
100 #endif
101 #ifdef TARGET_ARCH_sparc
102 # include "c1_globals_sparc.hpp"
103 #endif
104 #ifdef TARGET_ARCH_arm
105 # include "c1_globals_arm.hpp"
106 #endif
107 #ifdef TARGET_ARCH_ppc
108 # include "c1_globals_ppc.hpp"
109 #endif
110 #ifdef TARGET_OS_FAMILY_linux
111 # include "c1_globals_linux.hpp"
112 #endif
113 #ifdef TARGET_OS_FAMILY_solaris
114 # include "c1_globals_solaris.hpp"
115 #endif
116 #ifdef TARGET_OS_FAMILY_windows
117 # include "c1_globals_windows.hpp"
118 #endif
119 #ifdef TARGET_OS_FAMILY_bsd
120 # include "c1_globals_bsd.hpp"
121 #endif
122 #endif
123 #ifdef COMPILER2
124 #ifdef TARGET_ARCH_x86
125 # include "c2_globals_x86.hpp"
126 #endif
127 #ifdef TARGET_ARCH_sparc
128 # include "c2_globals_sparc.hpp"
129 #endif
130 #ifdef TARGET_ARCH_arm
131 # include "c2_globals_arm.hpp"
132 #endif
133 #ifdef TARGET_OS_FAMILY_linux
134 # include "c2_globals_linux.hpp"
135 #endif
136 #ifdef TARGET_OS_FAMILY_solaris
137 # include "c2_globals_solaris.hpp"
138 #endif
139 #ifdef TARGET_OS_FAMILY_windows
140 # include "c2_globals_windows.hpp"
141 #endif
142 #ifdef TARGET_OS_FAMILY_bsd
143 # include "c2_globals_bsd.hpp"
144 #endif
145 #endif
146 #ifdef SHARK
147 #ifdef TARGET_ARCH_zero
148 # include "shark_globals_zero.hpp"
149 #endif
150 #endif
151
152 #if !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK)
153 define_pd_global(bool, BackgroundCompilation, false);
154 define_pd_global(bool, UseTLAB, false);
155 define_pd_global(bool, CICompileOSR, false);
156 define_pd_global(bool, UseTypeProfile, false);
157 define_pd_global(bool, UseOnStackReplacement, false);
158 define_pd_global(bool, InlineIntrinsics, false);
159 define_pd_global(bool, PreferInterpreterNativeStubs, true);
160 define_pd_global(bool, ProfileInterpreter, false);
161 define_pd_global(bool, ProfileTraps, false);
162 define_pd_global(bool, TieredCompilation, false);
163
164 define_pd_global(intx, CompileThreshold, 0);
165 define_pd_global(intx, BackEdgeThreshold, 0);
166
167 define_pd_global(intx, OnStackReplacePercentage, 0);
168 define_pd_global(bool, ResizeTLAB, false);
169 define_pd_global(intx, FreqInlineSize, 0);
170 define_pd_global(intx, InlineSmallCode, 0);
171 define_pd_global(intx, NewSizeThreadIncrease, 4*K);
172 define_pd_global(intx, InlineClassNatives, true);
173 define_pd_global(intx, InlineUnsafeOps, true);
174 define_pd_global(intx, InitialCodeCacheSize, 160*K);
175 define_pd_global(intx, ReservedCodeCacheSize, 32*M);
176 define_pd_global(intx, CodeCacheExpansionSize, 32*K);
177 define_pd_global(intx, CodeCacheMinBlockLength, 1);
178 define_pd_global(uintx,PermSize, ScaleForWordSize(4*M));
179 define_pd_global(uintx,MaxPermSize, ScaleForWordSize(64*M));
180 define_pd_global(bool, NeverActAsServerClassMachine, true);
181 define_pd_global(uint64_t,MaxRAM, 1ULL*G);
182 #define CI_COMPILER_COUNT 0
183 #else
184
185 #ifdef COMPILER2
186 #define CI_COMPILER_COUNT 2
187 #else
188 #define CI_COMPILER_COUNT 1
189 #endif // COMPILER2
190
191 #endif // no compilers
192
193
194 // string type aliases used only in this file
195 typedef const char* ccstr;
196 typedef const char* ccstrlist; // represents string arguments which accumulate
197
198 enum FlagValueOrigin {
199 DEFAULT = 0,
200 COMMAND_LINE = 1,
201 ENVIRON_VAR = 2,
202 CONFIG_FILE = 3,
203 MANAGEMENT = 4,
204 ERGONOMIC = 5,
205 ATTACH_ON_DEMAND = 6,
206 INTERNAL = 99
207 };
208
209 struct Flag {
210 const char *type;
211 const char *name;
212 void* addr;
213
214 NOT_PRODUCT(const char *doc;)
215
216 const char *kind;
217 FlagValueOrigin origin;
218
219 // points to all Flags static array
220 static Flag *flags;
221
222 // number of flags
223 static size_t numFlags;
224
225 static Flag* find_flag(char* name, size_t length);
226
227 bool is_bool() const { return strcmp(type, "bool") == 0; }
228 bool get_bool() const { return *((bool*) addr); }
229 void set_bool(bool value) { *((bool*) addr) = value; }
230
231 bool is_intx() const { return strcmp(type, "intx") == 0; }
232 intx get_intx() const { return *((intx*) addr); }
233 void set_intx(intx value) { *((intx*) addr) = value; }
234
235 bool is_uintx() const { return strcmp(type, "uintx") == 0; }
236 uintx get_uintx() const { return *((uintx*) addr); }
237 void set_uintx(uintx value) { *((uintx*) addr) = value; }
238
239 bool is_uint64_t() const { return strcmp(type, "uint64_t") == 0; }
240 uint64_t get_uint64_t() const { return *((uint64_t*) addr); }
241 void set_uint64_t(uint64_t value) { *((uint64_t*) addr) = value; }
242
243 bool is_double() const { return strcmp(type, "double") == 0; }
244 double get_double() const { return *((double*) addr); }
245 void set_double(double value) { *((double*) addr) = value; }
246
247 bool is_ccstr() const { return strcmp(type, "ccstr") == 0 || strcmp(type, "ccstrlist") == 0; }
248 bool ccstr_accumulates() const { return strcmp(type, "ccstrlist") == 0; }
249 ccstr get_ccstr() const { return *((ccstr*) addr); }
250 void set_ccstr(ccstr value) { *((ccstr*) addr) = value; }
251
252 bool is_unlocker() const;
253 bool is_unlocked() const;
254 bool is_writeable() const;
255 bool is_external() const;
256
257 bool is_unlocker_ext() const;
258 bool is_unlocked_ext() const;
259 bool is_writeable_ext() const;
260 bool is_external_ext() const;
261
262 void print_on(outputStream* st, bool withComments = false );
263 void print_as_flag(outputStream* st);
264 };
265
266 // debug flags control various aspects of the VM and are global accessible
267
268 // use FlagSetting to temporarily change some debug flag
269 // e.g. FlagSetting fs(DebugThisAndThat, true);
270 // restored to previous value upon leaving scope
271 class FlagSetting {
272 bool val;
273 bool* flag;
274 public:
275 FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; }
276 ~FlagSetting() { *flag = val; }
277 };
278
279
280 class CounterSetting {
281 intx* counter;
282 public:
283 CounterSetting(intx* cnt) { counter = cnt; (*counter)++; }
284 ~CounterSetting() { (*counter)--; }
285 };
286
287
288 class IntFlagSetting {
289 intx val;
290 intx* flag;
291 public:
292 IntFlagSetting(intx& fl, intx newValue) { flag = &fl; val = fl; fl = newValue; }
293 ~IntFlagSetting() { *flag = val; }
294 };
295
296
297 class DoubleFlagSetting {
298 double val;
299 double* flag;
300 public:
301 DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; }
302 ~DoubleFlagSetting() { *flag = val; }
303 };
304
305
306 class CommandLineFlags {
307 public:
308 static bool boolAt(char* name, size_t len, bool* value);
309 static bool boolAt(char* name, bool* value) { return boolAt(name, strlen(name), value); }
310 static bool boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin);
311 static bool boolAtPut(char* name, bool* value, FlagValueOrigin origin) { return boolAtPut(name, strlen(name), value, origin); }
312
313 static bool intxAt(char* name, size_t len, intx* value);
314 static bool intxAt(char* name, intx* value) { return intxAt(name, strlen(name), value); }
315 static bool intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin);
316 static bool intxAtPut(char* name, intx* value, FlagValueOrigin origin) { return intxAtPut(name, strlen(name), value, origin); }
317
318 static bool uintxAt(char* name, size_t len, uintx* value);
319 static bool uintxAt(char* name, uintx* value) { return uintxAt(name, strlen(name), value); }
320 static bool uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin);
321 static bool uintxAtPut(char* name, uintx* value, FlagValueOrigin origin) { return uintxAtPut(name, strlen(name), value, origin); }
322
323 static bool uint64_tAt(char* name, size_t len, uint64_t* value);
324 static bool uint64_tAt(char* name, uint64_t* value) { return uint64_tAt(name, strlen(name), value); }
325 static bool uint64_tAtPut(char* name, size_t len, uint64_t* value, FlagValueOrigin origin);
326 static bool uint64_tAtPut(char* name, uint64_t* value, FlagValueOrigin origin) { return uint64_tAtPut(name, strlen(name), value, origin); }
327
328 static bool doubleAt(char* name, size_t len, double* value);
329 static bool doubleAt(char* name, double* value) { return doubleAt(name, strlen(name), value); }
330 static bool doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin);
331 static bool doubleAtPut(char* name, double* value, FlagValueOrigin origin) { return doubleAtPut(name, strlen(name), value, origin); }
332
333 static bool ccstrAt(char* name, size_t len, ccstr* value);
334 static bool ccstrAt(char* name, ccstr* value) { return ccstrAt(name, strlen(name), value); }
335 static bool ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin);
336 static bool ccstrAtPut(char* name, ccstr* value, FlagValueOrigin origin) { return ccstrAtPut(name, strlen(name), value, origin); }
337
338 // Returns false if name is not a command line flag.
339 static bool wasSetOnCmdline(const char* name, bool* value);
340 static void printSetFlags(outputStream* out);
341
342 static void printFlags(outputStream* out, bool withComments);
343
344 static void verify() PRODUCT_RETURN;
345 };
346
347 // use this for flags that are true by default in the debug version but
348 // false in the optimized version, and vice versa
349 #ifdef ASSERT
350 #define trueInDebug true
351 #define falseInDebug false
352 #else
353 #define trueInDebug false
354 #define falseInDebug true
355 #endif
356
357 // use this for flags that are true per default in the product build
358 // but false in development builds, and vice versa
359 #ifdef PRODUCT
360 #define trueInProduct true
361 #define falseInProduct false
362 #else
363 #define trueInProduct false
364 #define falseInProduct true
365 #endif
366
367 #ifdef JAVASE_EMBEDDED
368 #define falseInEmbedded false
369 #else
370 #define falseInEmbedded true
371 #endif
372
373 // develop flags are settable / visible only during development and are constant in the PRODUCT version
374 // product flags are always settable / visible
375 // notproduct flags are settable / visible only during development and are not declared in the PRODUCT version
376
377 // A flag must be declared with one of the following types:
378 // bool, intx, uintx, ccstr.
379 // The type "ccstr" is an alias for "const char*" and is used
380 // only in this file, because the macrology requires single-token type names.
381
382 // Note: Diagnostic options not meant for VM tuning or for product modes.
383 // They are to be used for VM quality assurance or field diagnosis
384 // of VM bugs. They are hidden so that users will not be encouraged to
385 // try them as if they were VM ordinary execution options. However, they
386 // are available in the product version of the VM. Under instruction
387 // from support engineers, VM customers can turn them on to collect
388 // diagnostic information about VM problems. To use a VM diagnostic
389 // option, you must first specify +UnlockDiagnosticVMOptions.
390 // (This master switch also affects the behavior of -Xprintflags.)
391 //
392 // experimental flags are in support of features that are not
393 // part of the officially supported product, but are available
394 // for experimenting with. They could, for example, be performance
395 // features that may not have undergone full or rigorous QA, but which may
396 // help performance in some cases and released for experimentation
397 // by the community of users and developers. This flag also allows one to
398 // be able to build a fully supported product that nonetheless also
399 // ships with some unsupported, lightly tested, experimental features.
400 // Like the UnlockDiagnosticVMOptions flag above, there is a corresponding
401 // UnlockExperimentalVMOptions flag, which allows the control and
402 // modification of the experimental flags.
403 //
404 // Nota bene: neither diagnostic nor experimental options should be used casually,
405 // and they are not supported on production loads, except under explicit
406 // direction from support engineers.
407 //
408 // manageable flags are writeable external product flags.
409 // They are dynamically writeable through the JDK management interface
410 // (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole.
411 // These flags are external exported interface (see CCC). The list of
412 // manageable flags can be queried programmatically through the management
413 // interface.
414 //
415 // A flag can be made as "manageable" only if
416 // - the flag is defined in a CCC as an external exported interface.
417 // - the VM implementation supports dynamic setting of the flag.
418 // This implies that the VM must *always* query the flag variable
419 // and not reuse state related to the flag state at any given time.
420 // - you want the flag to be queried programmatically by the customers.
421 //
422 // product_rw flags are writeable internal product flags.
423 // They are like "manageable" flags but for internal/private use.
424 // The list of product_rw flags are internal/private flags which
425 // may be changed/removed in a future release. It can be set
426 // through the management interface to get/set value
427 // when the name of flag is supplied.
428 //
429 // A flag can be made as "product_rw" only if
430 // - the VM implementation supports dynamic setting of the flag.
431 // This implies that the VM must *always* query the flag variable
432 // and not reuse state related to the flag state at any given time.
433 //
434 // Note that when there is a need to support develop flags to be writeable,
435 // it can be done in the same way as product_rw.
436
437 #define RUNTIME_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw, lp64_product) \
438 \
439 lp64_product(bool, UseCompressedOops, false, \
440 "Use 32-bit object references in 64-bit VM. " \
441 "lp64_product means flag is always constant in 32 bit VM") \
442 \
443 notproduct(bool, CheckCompressedOops, true, \
444 "generate checks in encoding/decoding code in debug VM") \
445 \
446 product_pd(uintx, HeapBaseMinAddress, \
447 "OS specific low limit for heap base address") \
448 \
449 diagnostic(bool, PrintCompressedOopsMode, false, \
450 "Print compressed oops base address and encoding mode") \
451 \
452 lp64_product(intx, ObjectAlignmentInBytes, 8, \
453 "Default object alignment in bytes, 8 is minimum") \
454 \
455 /* UseMembar is theoretically a temp flag used for memory barrier \
456 * removal testing. It was supposed to be removed before FCS but has \
457 * been re-added (see 6401008) */ \
458 product_pd(bool, UseMembar, \
459 "(Unstable) Issues membars on thread state transitions") \
460 \
461 /* Temp PPC Flag to allow disabling the use of lwsync on ppc platforms \
462 * that don't support it. This will be replaced by processor detection \
463 * logic. \
464 */ \
465 product(bool, UsePPCLWSYNC, true, \
466 "Use lwsync instruction if true, else use slower sync") \
467 \
468 develop(bool, CleanChunkPoolAsync, falseInEmbedded, \
469 "Whether to clean the chunk pool asynchronously") \
470 \
471 /* Temporary: See 6948537 */ \
472 experimental(bool, UseMemSetInBOT, true, \
473 "(Unstable) uses memset in BOT updates in GC code") \
474 \
475 diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \
476 "Enable normal processing of flags relating to field diagnostics")\
477 \
478 experimental(bool, UnlockExperimentalVMOptions, false, \
479 "Enable normal processing of flags relating to experimental features")\
480 \
481 product(bool, JavaMonitorsInStackTrace, true, \
482 "Print info. about Java monitor locks when the stacks are dumped")\
483 \
484 product_pd(bool, UseLargePages, \
485 "Use large page memory") \
486 \
487 product_pd(bool, UseLargePagesIndividualAllocation, \
488 "Allocate large pages individually for better affinity") \
489 \
490 develop(bool, LargePagesIndividualAllocationInjectError, false, \
491 "Fail large pages individual allocation") \
492 \
493 develop(bool, TracePageSizes, false, \
494 "Trace page size selection and usage.") \
495 \
496 product(bool, UseNUMA, false, \
497 "Use NUMA if available") \
498 \
499 product(bool, UseNUMAInterleaving, false, \
500 "Interleave memory across NUMA nodes if available") \
501 \
502 product(uintx, NUMAInterleaveGranularity, 2*M, \
503 "Granularity to use for NUMA interleaving on Windows OS") \
504 \
505 product(bool, ForceNUMA, false, \
506 "Force NUMA optimizations on single-node/UMA systems") \
507 \
508 product(intx, NUMAChunkResizeWeight, 20, \
509 "Percentage (0-100) used to weight the current sample when " \
510 "computing exponentially decaying average for " \
511 "AdaptiveNUMAChunkSizing") \
512 \
513 product(intx, NUMASpaceResizeRate, 1*G, \
514 "Do not reallocate more that this amount per collection") \
515 \
516 product(bool, UseAdaptiveNUMAChunkSizing, true, \
517 "Enable adaptive chunk sizing for NUMA") \
518 \
519 product(bool, NUMAStats, false, \
520 "Print NUMA stats in detailed heap information") \
521 \
522 product(intx, NUMAPageScanRate, 256, \
523 "Maximum number of pages to include in the page scan procedure") \
524 \
525 product_pd(bool, NeedsDeoptSuspend, \
526 "True for register window machines (sparc/ia64)") \
527 \
528 product(intx, UseSSE, 99, \
529 "Highest supported SSE instructions set on x86/x64") \
530 \
531 product(intx, UseAVX, 99, \
532 "Highest supported AVX instructions set on x86/x64") \
533 \
534 product(intx, UseVIS, 99, \
535 "Highest supported VIS instructions set on Sparc") \
536 \
537 product(uintx, LargePageSizeInBytes, 0, \
538 "Large page size (0 to let VM choose the page size") \
539 \
540 product(uintx, LargePageHeapSizeThreshold, 128*M, \
541 "Use large pages if max heap is at least this big") \
542 \
543 product(bool, ForceTimeHighResolution, false, \
544 "Using high time resolution(For Win32 only)") \
545 \
546 develop(bool, TraceItables, false, \
547 "Trace initialization and use of itables") \
548 \
549 develop(bool, TracePcPatching, false, \
550 "Trace usage of frame::patch_pc") \
551 \
552 develop(bool, TraceJumps, false, \
553 "Trace assembly jumps in thread ring buffer") \
554 \
555 develop(bool, TraceRelocator, false, \
556 "Trace the bytecode relocator") \
557 \
558 develop(bool, TraceLongCompiles, false, \
559 "Print out every time compilation is longer than " \
560 "a given threashold") \
561 \
562 develop(bool, SafepointALot, false, \
563 "Generates a lot of safepoints. Works with " \
564 "GuaranteedSafepointInterval") \
565 \
566 product_pd(bool, BackgroundCompilation, \
567 "A thread requesting compilation is not blocked during " \
568 "compilation") \
569 \
570 product(bool, PrintVMQWaitTime, false, \
571 "Prints out the waiting time in VM operation queue") \
572 \
573 develop(bool, BailoutToInterpreterForThrows, false, \
574 "Compiled methods which throws/catches exceptions will be " \
575 "deopt and intp.") \
576 \
577 develop(bool, NoYieldsInMicrolock, false, \
578 "Disable yields in microlock") \
579 \
580 develop(bool, TraceOopMapGeneration, false, \
581 "Shows oopmap generation") \
582 \
583 product(bool, MethodFlushing, true, \
584 "Reclamation of zombie and not-entrant methods") \
585 \
586 develop(bool, VerifyStack, false, \
587 "Verify stack of each thread when it is entering a runtime call") \
588 \
589 diagnostic(bool, ForceUnreachable, false, \
590 "Make all non code cache addresses to be unreachable with forcing use of 64bit literal fixups") \
591 \
592 notproduct(bool, StressDerivedPointers, false, \
593 "Force scavenge when a derived pointers is detected on stack " \
594 "after rtm call") \
595 \
596 develop(bool, TraceDerivedPointers, false, \
597 "Trace traversal of derived pointers on stack") \
598 \
599 notproduct(bool, TraceCodeBlobStacks, false, \
600 "Trace stack-walk of codeblobs") \
601 \
602 product(bool, PrintJNIResolving, false, \
603 "Used to implement -v:jni") \
604 \
605 notproduct(bool, PrintRewrites, false, \
606 "Print methods that are being rewritten") \
607 \
608 product(bool, UseInlineCaches, true, \
609 "Use Inline Caches for virtual calls ") \
610 \
611 develop(bool, InlineArrayCopy, true, \
612 "inline arraycopy native that is known to be part of " \
613 "base library DLL") \
614 \
615 develop(bool, InlineObjectHash, true, \
616 "inline Object::hashCode() native that is known to be part " \
617 "of base library DLL") \
618 \
619 develop(bool, InlineObjectCopy, true, \
620 "inline Object.clone and Arrays.copyOf[Range] intrinsics") \
621 \
622 develop(bool, InlineNatives, true, \
623 "inline natives that are known to be part of base library DLL") \
624 \
625 develop(bool, InlineMathNatives, true, \
626 "inline SinD, CosD, etc.") \
627 \
628 develop(bool, InlineClassNatives, true, \
629 "inline Class.isInstance, etc") \
630 \
631 develop(bool, InlineAtomicLong, true, \
632 "inline sun.misc.AtomicLong") \
633 \
634 develop(bool, InlineThreadNatives, true, \
635 "inline Thread.currentThread, etc") \
636 \
637 develop(bool, InlineReflectionGetCallerClass, true, \
638 "inline sun.reflect.Reflection.getCallerClass(), known to be part "\
639 "of base library DLL") \
640 \
641 develop(bool, InlineUnsafeOps, true, \
642 "inline memory ops (native methods) from sun.misc.Unsafe") \
643 \
644 develop(bool, ConvertCmpD2CmpF, true, \
645 "Convert cmpD to cmpF when one input is constant in float range") \
646 \
647 develop(bool, ConvertFloat2IntClipping, true, \
648 "Convert float2int clipping idiom to integer clipping") \
649 \
650 develop(bool, SpecialStringCompareTo, true, \
651 "special version of string compareTo") \
652 \
653 develop(bool, SpecialStringIndexOf, true, \
654 "special version of string indexOf") \
655 \
656 develop(bool, SpecialStringEquals, true, \
657 "special version of string equals") \
658 \
659 develop(bool, SpecialArraysEquals, true, \
660 "special version of Arrays.equals(char[],char[])") \
661 \
662 product(bool, CriticalJNINatives, true, \
663 "check for critical JNI entry points") \
664 \
665 notproduct(bool, StressCriticalJNINatives, false, \
666 "Exercise register saving code in critical natives") \
667 \
668 product(bool, UseSSE42Intrinsics, false, \
669 "SSE4.2 versions of intrinsics") \
670 \
671 product(bool, UseCondCardMark, false, \
672 "Check for already marked card before updating card table") \
673 \
674 develop(bool, TraceCallFixup, false, \
675 "traces all call fixups") \
676 \
677 develop(bool, DeoptimizeALot, false, \
678 "deoptimize at every exit from the runtime system") \
679 \
680 notproduct(ccstrlist, DeoptimizeOnlyAt, "", \
681 "a comma separated list of bcis to deoptimize at") \
682 \
683 product(bool, DeoptimizeRandom, false, \
684 "deoptimize random frames on random exit from the runtime system")\
685 \
686 notproduct(bool, ZombieALot, false, \
687 "creates zombies (non-entrant) at exit from the runt. system") \
688 \
689 product(bool, UnlinkSymbolsALot, false, \
690 "unlink unreferenced symbols from the symbol table at safepoints")\
691 \
692 notproduct(bool, WalkStackALot, false, \
693 "trace stack (no print) at every exit from the runtime system") \
694 \
695 product(bool, Debugging, false, \
696 "set when executing debug methods in debug.ccp " \
697 "(to prevent triggering assertions)") \
698 \
699 notproduct(bool, StrictSafepointChecks, trueInDebug, \
700 "Enable strict checks that safepoints cannot happen for threads " \
701 "that used No_Safepoint_Verifier") \
702 \
703 notproduct(bool, VerifyLastFrame, false, \
704 "Verify oops on last frame on entry to VM") \
705 \
706 develop(bool, TraceHandleAllocation, false, \
707 "Prints out warnings when suspicious many handles are allocated") \
708 \
709 product(bool, UseCompilerSafepoints, true, \
710 "Stop at safepoints in compiled code") \
711 \
712 product(bool, UseSplitVerifier, true, \
713 "use split verifier with StackMapTable attributes") \
714 \
715 product(bool, FailOverToOldVerifier, true, \
716 "fail over to old verifier when split verifier fails") \
717 \
718 develop(bool, ShowSafepointMsgs, false, \
719 "Show msg. about safepoint synch.") \
720 \
721 product(bool, SafepointTimeout, false, \
722 "Time out and warn or fail after SafepointTimeoutDelay " \
723 "milliseconds if failed to reach safepoint") \
724 \
725 develop(bool, DieOnSafepointTimeout, false, \
726 "Die upon failure to reach safepoint (see SafepointTimeout)") \
727 \
728 /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \
729 /* typically, at most a few retries are needed */ \
730 product(intx, SuspendRetryCount, 50, \
731 "Maximum retry count for an external suspend request") \
732 \
733 product(intx, SuspendRetryDelay, 5, \
734 "Milliseconds to delay per retry (* current_retry_count)") \
735 \
736 product(bool, AssertOnSuspendWaitFailure, false, \
737 "Assert/Guarantee on external suspend wait failure") \
738 \
739 product(bool, TraceSuspendWaitFailures, false, \
740 "Trace external suspend wait failures") \
741 \
742 product(bool, MaxFDLimit, true, \
743 "Bump the number of file descriptors to max in solaris.") \
744 \
745 diagnostic(bool, LogEvents, true, \
746 "Enable the various ring buffer event logs") \
747 \
748 diagnostic(intx, LogEventsBufferEntries, 10, \
749 "Enable the various ring buffer event logs") \
750 \
751 product(bool, BytecodeVerificationRemote, true, \
752 "Enables the Java bytecode verifier for remote classes") \
753 \
754 product(bool, BytecodeVerificationLocal, false, \
755 "Enables the Java bytecode verifier for local classes") \
756 \
757 develop(bool, ForceFloatExceptions, trueInDebug, \
758 "Force exceptions on FP stack under/overflow") \
759 \
760 develop(bool, SoftMatchFailure, trueInProduct, \
761 "If the DFA fails to match a node, print a message and bail out") \
762 \
763 develop(bool, VerifyStackAtCalls, false, \
764 "Verify that the stack pointer is unchanged after calls") \
765 \
766 develop(bool, TraceJavaAssertions, false, \
767 "Trace java language assertions") \
768 \
769 notproduct(bool, CheckAssertionStatusDirectives, false, \
770 "temporary - see javaClasses.cpp") \
771 \
772 notproduct(bool, PrintMallocFree, false, \
773 "Trace calls to C heap malloc/free allocation") \
774 \
775 product(bool, PrintOopAddress, false, \
776 "Always print the location of the oop") \
777 \
778 notproduct(bool, VerifyCodeCacheOften, false, \
779 "Verify compiled-code cache often") \
780 \
781 develop(bool, ZapDeadCompiledLocals, false, \
782 "Zap dead locals in compiler frames") \
783 \
784 notproduct(bool, ZapDeadLocalsOld, false, \
785 "Zap dead locals (old version, zaps all frames when " \
786 "entering the VM") \
787 \
788 notproduct(bool, CheckOopishValues, false, \
789 "Warn if value contains oop ( requires ZapDeadLocals)") \
790 \
791 develop(bool, UseMallocOnly, false, \
792 "use only malloc/free for allocation (no resource area/arena)") \
793 \
794 develop(bool, PrintMalloc, false, \
795 "print all malloc/free calls") \
796 \
797 develop(bool, PrintMallocStatistics, false, \
798 "print malloc/free statistics") \
799 \
800 develop(bool, ZapResourceArea, trueInDebug, \
801 "Zap freed resource/arena space with 0xABABABAB") \
802 \
803 notproduct(bool, ZapVMHandleArea, trueInDebug, \
804 "Zap freed VM handle space with 0xBCBCBCBC") \
805 \
806 develop(bool, ZapJNIHandleArea, trueInDebug, \
807 "Zap freed JNI handle space with 0xFEFEFEFE") \
808 \
809 notproduct(bool, ZapStackSegments, trueInDebug, \
810 "Zap allocated/freed Stack segments with 0xFADFADED") \
811 \
812 develop(bool, ZapUnusedHeapArea, trueInDebug, \
813 "Zap unused heap space with 0xBAADBABE") \
814 \
815 develop(bool, TraceZapUnusedHeapArea, false, \
816 "Trace zapping of unused heap space") \
817 \
818 develop(bool, CheckZapUnusedHeapArea, false, \
819 "Check zapping of unused heap space") \
820 \
821 develop(bool, ZapFillerObjects, trueInDebug, \
822 "Zap filler objects with 0xDEAFBABE") \
823 \
824 develop(bool, PrintVMMessages, true, \
825 "Print vm messages on console") \
826 \
827 product(bool, PrintGCApplicationConcurrentTime, false, \
828 "Print the time the application has been running") \
829 \
830 product(bool, PrintGCApplicationStoppedTime, false, \
831 "Print the time the application has been stopped") \
832 \
833 notproduct(uintx, ErrorHandlerTest, 0, \
834 "If > 0, provokes an error after VM initialization; the value" \
835 "determines which error to provoke. See test_error_handler()" \
836 "in debug.cpp.") \
837 \
838 develop(bool, Verbose, false, \
839 "Prints additional debugging information from other modes") \
840 \
841 develop(bool, PrintMiscellaneous, false, \
842 "Prints uncategorized debugging information (requires +Verbose)") \
843 \
844 develop(bool, WizardMode, false, \
845 "Prints much more debugging information") \
846 \
847 product(bool, ShowMessageBoxOnError, false, \
848 "Keep process alive on VM fatal error") \
849 \
850 product(bool, CreateMinidumpOnCrash, false, \
851 "Create minidump on VM fatal error") \
852 \
853 product_pd(bool, UseOSErrorReporting, \
854 "Let VM fatal error propagate to the OS (ie. WER on Windows)") \
855 \
856 product(bool, SuppressFatalErrorMessage, false, \
857 "Do NO Fatal Error report [Avoid deadlock]") \
858 \
859 product(ccstrlist, OnError, "", \
860 "Run user-defined commands on fatal error; see VMError.cpp " \
861 "for examples") \
862 \
863 product(ccstrlist, OnOutOfMemoryError, "", \
864 "Run user-defined commands on first java.lang.OutOfMemoryError") \
865 \
866 manageable(bool, HeapDumpBeforeFullGC, false, \
867 "Dump heap to file before any major stop-world GC") \
868 \
869 manageable(bool, HeapDumpAfterFullGC, false, \
870 "Dump heap to file after any major stop-world GC") \
871 \
872 manageable(bool, HeapDumpOnOutOfMemoryError, false, \
873 "Dump heap to file when java.lang.OutOfMemoryError is thrown") \
874 \
875 manageable(ccstr, HeapDumpPath, NULL, \
876 "When HeapDumpOnOutOfMemoryError is on, the path (filename or" \
877 "directory) of the dump file (defaults to java_pid<pid>.hprof" \
878 "in the working directory)") \
879 \
880 develop(uintx, SegmentedHeapDumpThreshold, 2*G, \
881 "Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) " \
882 "when the heap usage is larger than this") \
883 \
884 develop(uintx, HeapDumpSegmentSize, 1*G, \
885 "Approximate segment size when generating a segmented heap dump") \
886 \
887 develop(bool, BreakAtWarning, false, \
888 "Execute breakpoint upon encountering VM warning") \
889 \
890 product_pd(bool, UseVectoredExceptions, \
891 "Temp Flag - Use Vectored Exceptions rather than SEH (Windows Only)") \
892 \
893 develop(bool, TraceVMOperation, false, \
894 "Trace vm operations") \
895 \
896 develop(bool, UseFakeTimers, false, \
897 "Tells whether the VM should use system time or a fake timer") \
898 \
899 diagnostic(bool, LogCompilation, false, \
900 "Log compilation activity in detail to hotspot.log or LogFile") \
901 \
902 product(bool, PrintCompilation, false, \
903 "Print compilations") \
904 \
905 diagnostic(bool, TraceNMethodInstalls, false, \
906 "Trace nmethod intallation") \
907 \
908 diagnostic(intx, ScavengeRootsInCode, 2, \
909 "0: do not allow scavengable oops in the code cache; " \
910 "1: allow scavenging from the code cache; " \
911 "2: emit as many constants as the compiler can see") \
912 \
913 diagnostic(bool, TraceOSRBreakpoint, false, \
914 "Trace OSR Breakpoint ") \
915 \
916 diagnostic(bool, TraceCompileTriggered, false, \
917 "Trace compile triggered") \
918 \
919 diagnostic(bool, TraceTriggers, false, \
920 "Trace triggers") \
921 \
922 product(bool, AlwaysRestoreFPU, false, \
923 "Restore the FPU control word after every JNI call (expensive)") \
924 \
925 diagnostic(bool, PrintCompilation2, false, \
926 "Print additional statistics per compilation") \
927 \
928 diagnostic(bool, PrintAdapterHandlers, false, \
929 "Print code generated for i2c/c2i adapters") \
930 \
931 develop(bool, VerifyAdapterSharing, false, \
932 "Verify that the code for shared adapters is the equivalent") \
933 \
934 diagnostic(bool, PrintAssembly, false, \
935 "Print assembly code (using external disassembler.so)") \
936 \
937 diagnostic(ccstr, PrintAssemblyOptions, NULL, \
938 "Options string passed to disassembler.so") \
939 \
940 diagnostic(bool, PrintNMethods, false, \
941 "Print assembly code for nmethods when generated") \
942 \
943 diagnostic(bool, PrintNativeNMethods, false, \
944 "Print assembly code for native nmethods when generated") \
945 \
946 develop(bool, PrintDebugInfo, false, \
947 "Print debug information for all nmethods when generated") \
948 \
949 develop(bool, PrintRelocations, false, \
950 "Print relocation information for all nmethods when generated") \
951 \
952 develop(bool, PrintDependencies, false, \
953 "Print dependency information for all nmethods when generated") \
954 \
955 develop(bool, PrintExceptionHandlers, false, \
956 "Print exception handler tables for all nmethods when generated") \
957 \
958 develop(bool, InterceptOSException, false, \
959 "Starts debugger when an implicit OS (e.g., NULL) " \
960 "exception happens") \
961 \
962 notproduct(bool, PrintCodeCache, false, \
963 "Print the compiled_code cache when exiting") \
964 \
965 develop(bool, PrintCodeCache2, false, \
966 "Print detailed info on the compiled_code cache when exiting") \
967 \
968 diagnostic(bool, PrintStubCode, false, \
969 "Print generated stub code") \
970 \
971 product(bool, StackTraceInThrowable, true, \
972 "Collect backtrace in throwable when exception happens") \
973 \
974 product(bool, OmitStackTraceInFastThrow, true, \
975 "Omit backtraces for some 'hot' exceptions in optimized code") \
976 \
977 product(bool, ProfilerPrintByteCodeStatistics, false, \
978 "Prints byte code statictics when dumping profiler output") \
979 \
980 product(bool, ProfilerRecordPC, false, \
981 "Collects tick for each 16 byte interval of compiled code") \
982 \
983 product(bool, ProfileVM, false, \
984 "Profiles ticks that fall within VM (either in the VM Thread " \
985 "or VM code called through stubs)") \
986 \
987 product(bool, ProfileIntervals, false, \
988 "Prints profiles for each interval (see ProfileIntervalsTicks)") \
989 \
990 notproduct(bool, ProfilerCheckIntervals, false, \
991 "Collect and print info on spacing of profiler ticks") \
992 \
993 develop(bool, PrintJVMWarnings, false, \
994 "Prints warnings for unimplemented JVM functions") \
995 \
996 product(bool, PrintWarnings, true, \
997 "Prints JVM warnings to output stream") \
998 \
999 notproduct(uintx, WarnOnStalledSpinLock, 0, \
1000 "Prints warnings for stalled SpinLocks") \
1001 \
1002 develop(bool, InitializeJavaLangSystem, true, \
1003 "Initialize java.lang.System - turn off for individual " \
1004 "method debugging") \
1005 \
1006 develop(bool, InitializeJavaLangString, true, \
1007 "Initialize java.lang.String - turn off for individual " \
1008 "method debugging") \
1009 \
1010 develop(bool, InitializeJavaLangExceptionsErrors, true, \
1011 "Initialize various error and exception classes - turn off for " \
1012 "individual method debugging") \
1013 \
1014 product(bool, RegisterFinalizersAtInit, true, \
1015 "Register finalizable objects at end of Object.<init> or " \
1016 "after allocation") \
1017 \
1018 develop(bool, RegisterReferences, true, \
1019 "Tells whether the VM should register soft/weak/final/phantom " \
1020 "references") \
1021 \
1022 develop(bool, IgnoreRewrites, false, \
1023 "Supress rewrites of bytecodes in the oopmap generator. " \
1024 "This is unsafe!") \
1025 \
1026 develop(bool, PrintCodeCacheExtension, false, \
1027 "Print extension of code cache") \
1028 \
1029 develop(bool, UsePrivilegedStack, true, \
1030 "Enable the security JVM functions") \
1031 \
1032 develop(bool, IEEEPrecision, true, \
1033 "Enables IEEE precision (for INTEL only)") \
1034 \
1035 develop(bool, ProtectionDomainVerification, true, \
1036 "Verifies protection domain before resolution in system " \
1037 "dictionary") \
1038 \
1039 product(bool, ClassUnloading, true, \
1040 "Do unloading of classes") \
1041 \
1042 diagnostic(bool, LinkWellKnownClasses, false, \
1043 "Resolve a well known class as soon as its name is seen") \
1044 \
1045 develop(bool, DisableStartThread, false, \
1046 "Disable starting of additional Java threads " \
1047 "(for debugging only)") \
1048 \
1049 develop(bool, MemProfiling, false, \
1050 "Write memory usage profiling to log file") \
1051 \
1052 notproduct(bool, PrintSystemDictionaryAtExit, false, \
1053 "Prints the system dictionary at exit") \
1054 \
1055 experimental(intx, PredictedLoadedClassCount, 0, \
1056 "Experimental: Tune loaded class cache starting size.") \
1057 \
1058 diagnostic(bool, UnsyncloadClass, false, \
1059 "Unstable: VM calls loadClass unsynchronized. Custom " \
1060 "class loader must call VM synchronized for findClass " \
1061 "and defineClass.") \
1062 \
1063 product(bool, AlwaysLockClassLoader, false, \
1064 "Require the VM to acquire the class loader lock before calling " \
1065 "loadClass() even for class loaders registering " \
1066 "as parallel capable") \
1067 \
1068 product(bool, AllowParallelDefineClass, false, \
1069 "Allow parallel defineClass requests for class loaders " \
1070 "registering as parallel capable") \
1071 \
1072 product(bool, MustCallLoadClassInternal, false, \
1073 "Call loadClassInternal() rather than loadClass()") \
1074 \
1075 product_pd(bool, DontYieldALot, \
1076 "Throw away obvious excess yield calls (for SOLARIS only)") \
1077 \
1078 product_pd(bool, ConvertSleepToYield, \
1079 "Converts sleep(0) to thread yield " \
1080 "(may be off for SOLARIS to improve GUI)") \
1081 \
1082 product(bool, ConvertYieldToSleep, false, \
1083 "Converts yield to a sleep of MinSleepInterval to simulate Win32 "\
1084 "behavior (SOLARIS only)") \
1085 \
1086 product(bool, UseBoundThreads, true, \
1087 "Bind user level threads to kernel threads (for SOLARIS only)") \
1088 \
1089 develop(bool, UseDetachedThreads, true, \
1090 "Use detached threads that are recycled upon termination " \
1091 "(for SOLARIS only)") \
1092 \
1093 product(bool, UseLWPSynchronization, true, \
1094 "Use LWP-based instead of libthread-based synchronization " \
1095 "(SPARC only)") \
1096 \
1097 product(ccstr, SyncKnobs, NULL, \
1098 "(Unstable) Various monitor synchronization tunables") \
1099 \
1100 product(intx, EmitSync, 0, \
1101 "(Unsafe,Unstable) " \
1102 " Controls emission of inline sync fast-path code") \
1103 \
1104 product(intx, AlwaysInflate, 0, "(Unstable) Force inflation") \
1105 \
1106 product(intx, MonitorBound, 0, "Bound Monitor population") \
1107 \
1108 product(bool, MonitorInUseLists, false, "Track Monitors for Deflation") \
1109 \
1110 product(intx, Atomics, 0, \
1111 "(Unsafe,Unstable) Diagnostic - Controls emission of atomics") \
1112 \
1113 product(intx, FenceInstruction, 0, \
1114 "(Unsafe,Unstable) Experimental") \
1115 \
1116 product(intx, SyncFlags, 0, "(Unsafe,Unstable) Experimental Sync flags" ) \
1117 \
1118 product(intx, SyncVerbose, 0, "(Unstable)" ) \
1119 \
1120 product(intx, ClearFPUAtPark, 0, "(Unsafe,Unstable)" ) \
1121 \
1122 product(intx, hashCode, 0, \
1123 "(Unstable) select hashCode generation algorithm" ) \
1124 \
1125 product(intx, WorkAroundNPTLTimedWaitHang, 1, \
1126 "(Unstable, Linux-specific)" \
1127 " avoid NPTL-FUTEX hang pthread_cond_timedwait" ) \
1128 \
1129 product(bool, FilterSpuriousWakeups, true, \
1130 "Prevent spurious or premature wakeups from object.wait " \
1131 "(Solaris only)") \
1132 \
1133 product(intx, NativeMonitorTimeout, -1, "(Unstable)" ) \
1134 product(intx, NativeMonitorFlags, 0, "(Unstable)" ) \
1135 product(intx, NativeMonitorSpinLimit, 20, "(Unstable)" ) \
1136 \
1137 develop(bool, UsePthreads, false, \
1138 "Use pthread-based instead of libthread-based synchronization " \
1139 "(SPARC only)") \
1140 \
1141 product(bool, AdjustConcurrency, false, \
1142 "call thr_setconcurrency at thread create time to avoid " \
1143 "LWP starvation on MP systems (For Solaris Only)") \
1144 \
1145 develop(bool, UpdateHotSpotCompilerFileOnError, true, \
1146 "Should the system attempt to update the compiler file when " \
1147 "an error occurs?") \
1148 \
1149 product(bool, ReduceSignalUsage, false, \
1150 "Reduce the use of OS signals in Java and/or the VM") \
1151 \
1152 notproduct(bool, ValidateMarkSweep, false, \
1153 "Do extra validation during MarkSweep collection") \
1154 \
1155 notproduct(bool, RecordMarkSweepCompaction, false, \
1156 "Enable GC-to-GC recording and querying of compaction during " \
1157 "MarkSweep") \
1158 \
1159 develop_pd(bool, ShareVtableStubs, \
1160 "Share vtable stubs (smaller code but worse branch prediction") \
1161 \
1162 develop(bool, LoadLineNumberTables, true, \
1163 "Tells whether the class file parser loads line number tables") \
1164 \
1165 develop(bool, LoadLocalVariableTables, true, \
1166 "Tells whether the class file parser loads local variable tables")\
1167 \
1168 develop(bool, LoadLocalVariableTypeTables, true, \
1169 "Tells whether the class file parser loads local variable type tables")\
1170 \
1171 product(bool, AllowUserSignalHandlers, false, \
1172 "Do not complain if the application installs signal handlers " \
1173 "(Solaris & Linux only)") \
1174 \
1175 product(bool, UseSignalChaining, true, \
1176 "Use signal-chaining to invoke signal handlers installed " \
1177 "by the application (Solaris & Linux only)") \
1178 \
1179 product(bool, UseAltSigs, false, \
1180 "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \
1181 "internal signals (Solaris only)") \
1182 \
1183 product(bool, UseSpinning, false, \
1184 "Use spinning in monitor inflation and before entry") \
1185 \
1186 product(bool, PreSpinYield, false, \
1187 "Yield before inner spinning loop") \
1188 \
1189 product(bool, PostSpinYield, true, \
1190 "Yield after inner spinning loop") \
1191 \
1192 product(bool, AllowJNIEnvProxy, false, \
1193 "Allow JNIEnv proxies for jdbx") \
1194 \
1195 product(bool, JNIDetachReleasesMonitors, true, \
1196 "JNI DetachCurrentThread releases monitors owned by thread") \
1197 \
1198 product(bool, RestoreMXCSROnJNICalls, false, \
1199 "Restore MXCSR when returning from JNI calls") \
1200 \
1201 product(bool, CheckJNICalls, false, \
1202 "Verify all arguments to JNI calls") \
1203 \
1204 product(bool, UseFastJNIAccessors, true, \
1205 "Use optimized versions of Get<Primitive>Field") \
1206 \
1207 product(bool, EagerXrunInit, false, \
1208 "Eagerly initialize -Xrun libraries; allows startup profiling, " \
1209 " but not all -Xrun libraries may support the state of the VM at this time") \
1210 \
1211 product(bool, PreserveAllAnnotations, false, \
1212 "Preserve RuntimeInvisibleAnnotations as well as RuntimeVisibleAnnotations") \
1213 \
1214 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \
1215 "Number of OutOfMemoryErrors preallocated with backtrace") \
1216 \
1217 product(bool, LazyBootClassLoader, true, \
1218 "Enable/disable lazy opening of boot class path entries") \
1219 \
1220 diagnostic(bool, UseIncDec, true, \
1221 "Use INC, DEC instructions on x86") \
1222 \
1223 product(bool, UseNewLongLShift, false, \
1224 "Use optimized bitwise shift left") \
1225 \
1226 product(bool, UseStoreImmI16, true, \
1227 "Use store immediate 16-bits value instruction on x86") \
1228 \
1229 product(bool, UseAddressNop, false, \
1230 "Use '0F 1F [addr]' NOP instructions on x86 cpus") \
1231 \
1232 product(bool, UseXmmLoadAndClearUpper, true, \
1233 "Load low part of XMM register and clear upper part") \
1234 \
1235 product(bool, UseXmmRegToRegMoveAll, false, \
1236 "Copy all XMM register bits when moving value between registers") \
1237 \
1238 product(bool, UseXmmI2D, false, \
1239 "Use SSE2 CVTDQ2PD instruction to convert Integer to Double") \
1240 \
1241 product(bool, UseXmmI2F, false, \
1242 "Use SSE2 CVTDQ2PS instruction to convert Integer to Float") \
1243 \
1244 product(bool, UseXMMForArrayCopy, false, \
1245 "Use SSE2 MOVQ instruction for Arraycopy") \
1246 \
1247 product(bool, UseUnalignedLoadStores, false, \
1248 "Use SSE2 MOVDQU instruction for Arraycopy") \
1249 \
1250 product(bool, UseCBCond, false, \
1251 "Use compare and branch instruction on SPARC") \
1252 \
1253 product(intx, FieldsAllocationStyle, 1, \
1254 "0 - type based with oops first, 1 - with oops last, " \
1255 "2 - oops in super and sub classes are together") \
1256 \
1257 product(bool, CompactFields, true, \
1258 "Allocate nonstatic fields in gaps between previous fields") \
1259 \
1260 notproduct(bool, PrintCompactFieldsSavings, false, \
1261 "Print how many words were saved with CompactFields") \
1262 \
1263 product(bool, UseBiasedLocking, true, \
1264 "Enable biased locking in JVM") \
1265 \
1266 product(intx, BiasedLockingStartupDelay, 4000, \
1267 "Number of milliseconds to wait before enabling biased locking") \
1268 \
1269 diagnostic(bool, PrintBiasedLockingStatistics, false, \
1270 "Print statistics of biased locking in JVM") \
1271 \
1272 product(intx, BiasedLockingBulkRebiasThreshold, 20, \
1273 "Threshold of number of revocations per type to try to " \
1274 "rebias all objects in the heap of that type") \
1275 \
1276 product(intx, BiasedLockingBulkRevokeThreshold, 40, \
1277 "Threshold of number of revocations per type to permanently " \
1278 "revoke biases of all objects in the heap of that type") \
1279 \
1280 product(intx, BiasedLockingDecayTime, 25000, \
1281 "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \
1282 "type after previous bulk rebias") \
1283 \
1284 develop(bool, JavaObjectsInPerm, false, \
1285 "controls whether Classes and interned Strings are allocated" \
1286 "in perm. This purely intended to allow debugging issues" \
1287 "in production.") \
1288 \
1289 /* tracing */ \
1290 \
1291 notproduct(bool, TraceRuntimeCalls, false, \
1292 "Trace run-time calls") \
1293 \
1294 develop(bool, TraceJNICalls, false, \
1295 "Trace JNI calls") \
1296 \
1297 notproduct(bool, TraceJVMCalls, false, \
1298 "Trace JVM calls") \
1299 \
1300 product(ccstr, TraceJVMTI, NULL, \
1301 "Trace flags for JVMTI functions and events") \
1302 \
1303 /* This option can change an EMCP method into an obsolete method. */ \
1304 /* This can affect tests that except specific methods to be EMCP. */ \
1305 /* This option should be used with caution. */ \
1306 product(bool, StressLdcRewrite, false, \
1307 "Force ldc -> ldc_w rewrite during RedefineClasses") \
1308 \
1309 product(intx, TraceRedefineClasses, 0, \
1310 "Trace level for JVMTI RedefineClasses") \
1311 \
1312 develop(bool, StressMethodComparator, false, \
1313 "run the MethodComparator on all loaded methods") \
1314 \
1315 /* change to false by default sometime after Mustang */ \
1316 product(bool, VerifyMergedCPBytecodes, true, \
1317 "Verify bytecodes after RedefineClasses constant pool merging") \
1318 \
1319 develop(bool, TraceJNIHandleAllocation, false, \
1320 "Trace allocation/deallocation of JNI handle blocks") \
1321 \
1322 develop(bool, TraceThreadEvents, false, \
1323 "Trace all thread events") \
1324 \
1325 develop(bool, TraceBytecodes, false, \
1326 "Trace bytecode execution") \
1327 \
1328 develop(bool, TraceClassInitialization, false, \
1329 "Trace class initialization") \
1330 \
1331 develop(bool, TraceExceptions, false, \
1332 "Trace exceptions") \
1333 \
1334 develop(bool, TraceICs, false, \
1335 "Trace inline cache changes") \
1336 \
1337 notproduct(bool, TraceInvocationCounterOverflow, false, \
1338 "Trace method invocation counter overflow") \
1339 \
1340 develop(bool, TraceInlineCacheClearing, false, \
1341 "Trace clearing of inline caches in nmethods") \
1342 \
1343 develop(bool, TraceDependencies, false, \
1344 "Trace dependencies") \
1345 \
1346 develop(bool, VerifyDependencies, trueInDebug, \
1347 "Exercise and verify the compilation dependency mechanism") \
1348 \
1349 develop(bool, TraceNewOopMapGeneration, false, \
1350 "Trace OopMapGeneration") \
1351 \
1352 develop(bool, TraceNewOopMapGenerationDetailed, false, \
1353 "Trace OopMapGeneration: print detailed cell states") \
1354 \
1355 develop(bool, TimeOopMap, false, \
1356 "Time calls to GenerateOopMap::compute_map() in sum") \
1357 \
1358 develop(bool, TimeOopMap2, false, \
1359 "Time calls to GenerateOopMap::compute_map() individually") \
1360 \
1361 develop(bool, TraceMonitorMismatch, false, \
1362 "Trace monitor matching failures during OopMapGeneration") \
1363 \
1364 develop(bool, TraceOopMapRewrites, false, \
1365 "Trace rewritting of method oops during oop map generation") \
1366 \
1367 develop(bool, TraceSafepoint, false, \
1368 "Trace safepoint operations") \
1369 \
1370 develop(bool, TraceICBuffer, false, \
1371 "Trace usage of IC buffer") \
1372 \
1373 develop(bool, TraceCompiledIC, false, \
1374 "Trace changes of compiled IC") \
1375 \
1376 notproduct(bool, TraceZapDeadLocals, false, \
1377 "Trace zapping dead locals") \
1378 \
1379 develop(bool, TraceStartupTime, false, \
1380 "Trace setup time") \
1381 \
1382 product(ccstr, HPILibPath, NULL, \
1383 "Specify alternate path to HPI library") \
1384 \
1385 develop(bool, TraceProtectionDomainVerification, false, \
1386 "Trace protection domain verifcation") \
1387 \
1388 develop(bool, TraceClearedExceptions, false, \
1389 "Prints when an exception is forcibly cleared") \
1390 \
1391 product(bool, TraceClassResolution, false, \
1392 "Trace all constant pool resolutions (for debugging)") \
1393 \
1394 product(bool, TraceBiasedLocking, false, \
1395 "Trace biased locking in JVM") \
1396 \
1397 product(bool, TraceMonitorInflation, false, \
1398 "Trace monitor inflation in JVM") \
1399 \
1400 /* assembler */ \
1401 product(bool, Use486InstrsOnly, false, \
1402 "Use 80486 Compliant instruction subset") \
1403 \
1404 /* gc */ \
1405 \
1406 product(bool, UseSerialGC, false, \
1407 "Use the serial garbage collector") \
1408 \
1409 product(bool, UseG1GC, false, \
1410 "Use the Garbage-First garbage collector") \
1411 \
1412 product(bool, UseParallelGC, false, \
1413 "Use the Parallel Scavenge garbage collector") \
1414 \
1415 product(bool, UseParallelOldGC, false, \
1416 "Use the Parallel Old garbage collector") \
1417 \
1418 product(uintx, HeapMaximumCompactionInterval, 20, \
1419 "How often should we maximally compact the heap (not allowing " \
1420 "any dead space)") \
1421 \
1422 product(uintx, HeapFirstMaximumCompactionCount, 3, \
1423 "The collection count for the first maximum compaction") \
1424 \
1425 product(bool, UseMaximumCompactionOnSystemGC, true, \
1426 "In the Parallel Old garbage collector maximum compaction for " \
1427 "a system GC") \
1428 \
1429 product(uintx, ParallelOldDeadWoodLimiterMean, 50, \
1430 "The mean used by the par compact dead wood" \
1431 "limiter (a number between 0-100).") \
1432 \
1433 product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \
1434 "The standard deviation used by the par compact dead wood" \
1435 "limiter (a number between 0-100).") \
1436 \
1437 product(uintx, ParallelGCThreads, 0, \
1438 "Number of parallel threads parallel gc will use") \
1439 \
1440 product(bool, UseDynamicNumberOfGCThreads, false, \
1441 "Dynamically choose the number of parallel threads " \
1442 "parallel gc will use") \
1443 \
1444 diagnostic(bool, ForceDynamicNumberOfGCThreads, false, \
1445 "Force dynamic selection of the number of" \
1446 "parallel threads parallel gc will use to aid debugging") \
1447 \
1448 product(uintx, HeapSizePerGCThread, ScaleForWordSize(64*M), \
1449 "Size of heap (bytes) per GC thread used in calculating the " \
1450 "number of GC threads") \
1451 \
1452 product(bool, TraceDynamicGCThreads, false, \
1453 "Trace the dynamic GC thread usage") \
1454 \
1455 develop(bool, ParallelOldGCSplitALot, false, \
1456 "Provoke splitting (copying data from a young gen space to" \
1457 "multiple destination spaces)") \
1458 \
1459 develop(uintx, ParallelOldGCSplitInterval, 3, \
1460 "How often to provoke splitting a young gen space") \
1461 \
1462 develop(bool, TraceRegionTasksQueuing, false, \
1463 "Trace the queuing of the region tasks") \
1464 \
1465 product(uintx, ConcGCThreads, 0, \
1466 "Number of threads concurrent gc will use") \
1467 \
1468 product(uintx, YoungPLABSize, 4096, \
1469 "Size of young gen promotion labs (in HeapWords)") \
1470 \
1471 product(uintx, OldPLABSize, 1024, \
1472 "Size of old gen promotion labs (in HeapWords)") \
1473 \
1474 product(uintx, GCTaskTimeStampEntries, 200, \
1475 "Number of time stamp entries per gc worker thread") \
1476 \
1477 product(bool, AlwaysTenure, false, \
1478 "Always tenure objects in eden. (ParallelGC only)") \
1479 \
1480 product(bool, NeverTenure, false, \
1481 "Never tenure objects in eden, May tenure on overflow " \
1482 "(ParallelGC only)") \
1483 \
1484 product(bool, ScavengeBeforeFullGC, true, \
1485 "Scavenge youngest generation before each full GC, " \
1486 "used with UseParallelGC") \
1487 \
1488 develop(bool, ScavengeWithObjectsInToSpace, false, \
1489 "Allow scavenges to occur when to_space contains objects.") \
1490 \
1491 product(bool, UseConcMarkSweepGC, false, \
1492 "Use Concurrent Mark-Sweep GC in the old generation") \
1493 \
1494 product(bool, ExplicitGCInvokesConcurrent, false, \
1495 "A System.gc() request invokes a concurrent collection;" \
1496 " (effective only when UseConcMarkSweepGC)") \
1497 \
1498 product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \
1499 "A System.gc() request invokes a concurrent collection and " \
1500 "also unloads classes during such a concurrent gc cycle " \
1501 "(effective only when UseConcMarkSweepGC)") \
1502 \
1503 product(bool, GCLockerInvokesConcurrent, false, \
1504 "The exit of a JNI CS necessitating a scavenge also" \
1505 " kicks off a bkgrd concurrent collection") \
1506 \
1507 product(uintx, GCLockerEdenExpansionPercent, 5, \
1508 "How much the GC can expand the eden by while the GC locker " \
1509 "is active (as a percentage)") \
1510 \
1511 develop(bool, UseCMSAdaptiveFreeLists, true, \
1512 "Use Adaptive Free Lists in the CMS generation") \
1513 \
1514 develop(bool, UseAsyncConcMarkSweepGC, true, \
1515 "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\
1516 \
1517 develop(bool, RotateCMSCollectionTypes, false, \
1518 "Rotate the CMS collections among concurrent and STW") \
1519 \
1520 product(bool, UseCMSBestFit, true, \
1521 "Use CMS best fit allocation strategy") \
1522 \
1523 product(bool, UseCMSCollectionPassing, true, \
1524 "Use passing of collection from background to foreground") \
1525 \
1526 product(bool, UseParNewGC, false, \
1527 "Use parallel threads in the new generation.") \
1528 \
1529 product(bool, ParallelGCVerbose, false, \
1530 "Verbose output for parallel GC.") \
1531 \
1532 product(intx, ParallelGCBufferWastePct, 10, \
1533 "wasted fraction of parallel allocation buffer.") \
1534 \
1535 diagnostic(bool, ParallelGCRetainPLAB, false, \
1536 "Retain parallel allocation buffers across scavenges; " \
1537 " -- disabled because this currently conflicts with " \
1538 " parallel card scanning under certain conditions ") \
1539 \
1540 product(intx, TargetPLABWastePct, 10, \
1541 "target wasted space in last buffer as pct of overall allocation")\
1542 \
1543 product(uintx, PLABWeight, 75, \
1544 "Percentage (0-100) used to weight the current sample when" \
1545 "computing exponentially decaying average for ResizePLAB.") \
1546 \
1547 product(bool, ResizePLAB, true, \
1548 "Dynamically resize (survivor space) promotion labs") \
1549 \
1550 product(bool, PrintPLAB, false, \
1551 "Print (survivor space) promotion labs sizing decisions") \
1552 \
1553 product(intx, ParGCArrayScanChunk, 50, \
1554 "Scan a subset and push remainder, if array is bigger than this") \
1555 \
1556 product(bool, ParGCUseLocalOverflow, false, \
1557 "Instead of a global overflow list, use local overflow stacks") \
1558 \
1559 product(bool, ParGCTrimOverflow, true, \
1560 "Eagerly trim the local overflow lists (when ParGCUseLocalOverflow") \
1561 \
1562 notproduct(bool, ParGCWorkQueueOverflowALot, false, \
1563 "Whether we should simulate work queue overflow in ParNew") \
1564 \
1565 notproduct(uintx, ParGCWorkQueueOverflowInterval, 1000, \
1566 "An `interval' counter that determines how frequently " \
1567 "we simulate overflow; a smaller number increases frequency") \
1568 \
1569 product(uintx, ParGCDesiredObjsFromOverflowList, 20, \
1570 "The desired number of objects to claim from the overflow list") \
1571 \
1572 diagnostic(uintx, ParGCStridesPerThread, 2, \
1573 "The number of strides per worker thread that we divide up the " \
1574 "card table scanning work into") \
1575 \
1576 diagnostic(intx, ParGCCardsPerStrideChunk, 256, \
1577 "The number of cards in each chunk of the parallel chunks used " \
1578 "during card table scanning") \
1579 \
1580 product(uintx, CMSParPromoteBlocksToClaim, 16, \
1581 "Number of blocks to attempt to claim when refilling CMS LAB for "\
1582 "parallel GC.") \
1583 \
1584 product(uintx, OldPLABWeight, 50, \
1585 "Percentage (0-100) used to weight the current sample when" \
1586 "computing exponentially decaying average for resizing CMSParPromoteBlocksToClaim.") \
1587 \
1588 product(bool, ResizeOldPLAB, true, \
1589 "Dynamically resize (old gen) promotion labs") \
1590 \
1591 product(bool, PrintOldPLAB, false, \
1592 "Print (old gen) promotion labs sizing decisions") \
1593 \
1594 product(uintx, CMSOldPLABMin, 16, \
1595 "Min size of CMS gen promotion lab caches per worker per blksize")\
1596 \
1597 product(uintx, CMSOldPLABMax, 1024, \
1598 "Max size of CMS gen promotion lab caches per worker per blksize")\
1599 \
1600 product(uintx, CMSOldPLABNumRefills, 4, \
1601 "Nominal number of refills of CMS gen promotion lab cache" \
1602 " per worker per block size") \
1603 \
1604 product(bool, CMSOldPLABResizeQuicker, false, \
1605 "Whether to react on-the-fly during a scavenge to a sudden" \
1606 " change in block demand rate") \
1607 \
1608 product(uintx, CMSOldPLABToleranceFactor, 4, \
1609 "The tolerance of the phase-change detector for on-the-fly" \
1610 " PLAB resizing during a scavenge") \
1611 \
1612 product(uintx, CMSOldPLABReactivityFactor, 2, \
1613 "The gain in the feedback loop for on-the-fly PLAB resizing" \
1614 " during a scavenge") \
1615 \
1616 product(uintx, CMSOldPLABReactivityCeiling, 10, \
1617 "The clamping of the gain in the feedback loop for on-the-fly" \
1618 " PLAB resizing during a scavenge") \
1619 \
1620 product(bool, AlwaysPreTouch, false, \
1621 "It forces all freshly committed pages to be pre-touched.") \
1622 \
1623 product_pd(intx, CMSYoungGenPerWorker, \
1624 "The maximum size of young gen chosen by default per GC worker " \
1625 "thread available") \
1626 \
1627 product(bool, GCOverheadReporting, false, \
1628 "Enables the GC overhead reporting facility") \
1629 \
1630 product(intx, GCOverheadReportingPeriodMS, 100, \
1631 "Reporting period for conc GC overhead reporting, in ms ") \
1632 \
1633 product(bool, CMSIncrementalMode, false, \
1634 "Whether CMS GC should operate in \"incremental\" mode") \
1635 \
1636 product(uintx, CMSIncrementalDutyCycle, 10, \
1637 "CMS incremental mode duty cycle (a percentage, 0-100). If" \
1638 "CMSIncrementalPacing is enabled, then this is just the initial" \
1639 "value") \
1640 \
1641 product(bool, CMSIncrementalPacing, true, \
1642 "Whether the CMS incremental mode duty cycle should be " \
1643 "automatically adjusted") \
1644 \
1645 product(uintx, CMSIncrementalDutyCycleMin, 0, \
1646 "Lower bound on the duty cycle when CMSIncrementalPacing is " \
1647 "enabled (a percentage, 0-100)") \
1648 \
1649 product(uintx, CMSIncrementalSafetyFactor, 10, \
1650 "Percentage (0-100) used to add conservatism when computing the " \
1651 "duty cycle") \
1652 \
1653 product(uintx, CMSIncrementalOffset, 0, \
1654 "Percentage (0-100) by which the CMS incremental mode duty cycle" \
1655 " is shifted to the right within the period between young GCs") \
1656 \
1657 product(uintx, CMSExpAvgFactor, 50, \
1658 "Percentage (0-100) used to weight the current sample when" \
1659 "computing exponential averages for CMS statistics.") \
1660 \
1661 product(uintx, CMS_FLSWeight, 75, \
1662 "Percentage (0-100) used to weight the current sample when" \
1663 "computing exponentially decating averages for CMS FLS statistics.") \
1664 \
1665 product(uintx, CMS_FLSPadding, 1, \
1666 "The multiple of deviation from mean to use for buffering" \
1667 "against volatility in free list demand.") \
1668 \
1669 product(uintx, FLSCoalescePolicy, 2, \
1670 "CMS: Aggression level for coalescing, increasing from 0 to 4") \
1671 \
1672 product(bool, FLSAlwaysCoalesceLarge, false, \
1673 "CMS: Larger free blocks are always available for coalescing") \
1674 \
1675 product(double, FLSLargestBlockCoalesceProximity, 0.99, \
1676 "CMS: the smaller the percentage the greater the coalition force")\
1677 \
1678 product(double, CMSSmallCoalSurplusPercent, 1.05, \
1679 "CMS: the factor by which to inflate estimated demand of small" \
1680 " block sizes to prevent coalescing with an adjoining block") \
1681 \
1682 product(double, CMSLargeCoalSurplusPercent, 0.95, \
1683 "CMS: the factor by which to inflate estimated demand of large" \
1684 " block sizes to prevent coalescing with an adjoining block") \
1685 \
1686 product(double, CMSSmallSplitSurplusPercent, 1.10, \
1687 "CMS: the factor by which to inflate estimated demand of small" \
1688 " block sizes to prevent splitting to supply demand for smaller" \
1689 " blocks") \
1690 \
1691 product(double, CMSLargeSplitSurplusPercent, 1.00, \
1692 "CMS: the factor by which to inflate estimated demand of large" \
1693 " block sizes to prevent splitting to supply demand for smaller" \
1694 " blocks") \
1695 \
1696 product(bool, CMSExtrapolateSweep, false, \
1697 "CMS: cushion for block demand during sweep") \
1698 \
1699 product(uintx, CMS_SweepWeight, 75, \
1700 "Percentage (0-100) used to weight the current sample when " \
1701 "computing exponentially decaying average for inter-sweep " \
1702 "duration") \
1703 \
1704 product(uintx, CMS_SweepPadding, 1, \
1705 "The multiple of deviation from mean to use for buffering " \
1706 "against volatility in inter-sweep duration.") \
1707 \
1708 product(uintx, CMS_SweepTimerThresholdMillis, 10, \
1709 "Skip block flux-rate sampling for an epoch unless inter-sweep " \
1710 "duration exceeds this threhold in milliseconds") \
1711 \
1712 develop(bool, CMSTraceIncrementalMode, false, \
1713 "Trace CMS incremental mode") \
1714 \
1715 develop(bool, CMSTraceIncrementalPacing, false, \
1716 "Trace CMS incremental mode pacing computation") \
1717 \
1718 develop(bool, CMSTraceThreadState, false, \
1719 "Trace the CMS thread state (enable the trace_state() method)") \
1720 \
1721 product(bool, CMSClassUnloadingEnabled, false, \
1722 "Whether class unloading enabled when using CMS GC") \
1723 \
1724 product(uintx, CMSClassUnloadingMaxInterval, 0, \
1725 "When CMS class unloading is enabled, the maximum CMS cycle count"\
1726 " for which classes may not be unloaded") \
1727 \
1728 product(bool, CMSCompactWhenClearAllSoftRefs, true, \
1729 "Compact when asked to collect CMS gen with clear_all_soft_refs") \
1730 \
1731 product(bool, UseCMSCompactAtFullCollection, true, \
1732 "Use mark sweep compact at full collections") \
1733 \
1734 product(uintx, CMSFullGCsBeforeCompaction, 0, \
1735 "Number of CMS full collection done before compaction if > 0") \
1736 \
1737 develop(intx, CMSDictionaryChoice, 0, \
1738 "Use BinaryTreeDictionary as default in the CMS generation") \
1739 \
1740 product(uintx, CMSIndexedFreeListReplenish, 4, \
1741 "Replenish an indexed free list with this number of chunks") \
1742 \
1743 product(bool, CMSReplenishIntermediate, true, \
1744 "Replenish all intermediate free-list caches") \
1745 \
1746 product(bool, CMSSplitIndexedFreeListBlocks, true, \
1747 "When satisfying batched demand, split blocks from the " \
1748 "IndexedFreeList whose size is a multiple of requested size") \
1749 \
1750 product(bool, CMSLoopWarn, false, \
1751 "Warn in case of excessive CMS looping") \
1752 \
1753 develop(bool, CMSOverflowEarlyRestoration, false, \
1754 "Whether preserved marks should be restored early") \
1755 \
1756 product(uintx, MarkStackSize, NOT_LP64(32*K) LP64_ONLY(4*M), \
1757 "Size of marking stack") \
1758 \
1759 product(uintx, MarkStackSizeMax, NOT_LP64(4*M) LP64_ONLY(512*M), \
1760 "Max size of marking stack") \
1761 \
1762 notproduct(bool, CMSMarkStackOverflowALot, false, \
1763 "Whether we should simulate frequent marking stack / work queue" \
1764 " overflow") \
1765 \
1766 notproduct(uintx, CMSMarkStackOverflowInterval, 1000, \
1767 "An `interval' counter that determines how frequently" \
1768 " we simulate overflow; a smaller number increases frequency") \
1769 \
1770 product(uintx, CMSMaxAbortablePrecleanLoops, 0, \
1771 "(Temporary, subject to experimentation)" \
1772 "Maximum number of abortable preclean iterations, if > 0") \
1773 \
1774 product(intx, CMSMaxAbortablePrecleanTime, 5000, \
1775 "(Temporary, subject to experimentation)" \
1776 "Maximum time in abortable preclean in ms") \
1777 \
1778 product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \
1779 "(Temporary, subject to experimentation)" \
1780 "Nominal minimum work per abortable preclean iteration") \
1781 \
1782 manageable(intx, CMSAbortablePrecleanWaitMillis, 100, \
1783 "(Temporary, subject to experimentation)" \
1784 " Time that we sleep between iterations when not given" \
1785 " enough work per iteration") \
1786 \
1787 product(uintx, CMSRescanMultiple, 32, \
1788 "Size (in cards) of CMS parallel rescan task") \
1789 \
1790 product(uintx, CMSConcMarkMultiple, 32, \
1791 "Size (in cards) of CMS concurrent MT marking task") \
1792 \
1793 product(uintx, CMSRevisitStackSize, 1*M, \
1794 "Size of CMS KlassKlass revisit stack") \
1795 \
1796 product(bool, CMSAbortSemantics, false, \
1797 "Whether abort-on-overflow semantics is implemented") \
1798 \
1799 product(bool, CMSParallelRemarkEnabled, true, \
1800 "Whether parallel remark enabled (only if ParNewGC)") \
1801 \
1802 product(bool, CMSParallelSurvivorRemarkEnabled, true, \
1803 "Whether parallel remark of survivor space" \
1804 " enabled (effective only if CMSParallelRemarkEnabled)") \
1805 \
1806 product(bool, CMSPLABRecordAlways, true, \
1807 "Whether to always record survivor space PLAB bdries" \
1808 " (effective only if CMSParallelSurvivorRemarkEnabled)") \
1809 \
1810 product(bool, CMSConcurrentMTEnabled, true, \
1811 "Whether multi-threaded concurrent work enabled (if ParNewGC)") \
1812 \
1813 product(bool, CMSPermGenPrecleaningEnabled, true, \
1814 "Whether concurrent precleaning enabled in perm gen" \
1815 " (effective only when CMSPrecleaningEnabled is true)") \
1816 \
1817 product(bool, CMSPrecleaningEnabled, true, \
1818 "Whether concurrent precleaning enabled") \
1819 \
1820 product(uintx, CMSPrecleanIter, 3, \
1821 "Maximum number of precleaning iteration passes") \
1822 \
1823 product(uintx, CMSPrecleanNumerator, 2, \
1824 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \
1825 " ratio") \
1826 \
1827 product(uintx, CMSPrecleanDenominator, 3, \
1828 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \
1829 " ratio") \
1830 \
1831 product(bool, CMSPrecleanRefLists1, true, \
1832 "Preclean ref lists during (initial) preclean phase") \
1833 \
1834 product(bool, CMSPrecleanRefLists2, false, \
1835 "Preclean ref lists during abortable preclean phase") \
1836 \
1837 product(bool, CMSPrecleanSurvivors1, false, \
1838 "Preclean survivors during (initial) preclean phase") \
1839 \
1840 product(bool, CMSPrecleanSurvivors2, true, \
1841 "Preclean survivors during abortable preclean phase") \
1842 \
1843 product(uintx, CMSPrecleanThreshold, 1000, \
1844 "Don't re-iterate if #dirty cards less than this") \
1845 \
1846 product(bool, CMSCleanOnEnter, true, \
1847 "Clean-on-enter optimization for reducing number of dirty cards") \
1848 \
1849 product(uintx, CMSRemarkVerifyVariant, 1, \
1850 "Choose variant (1,2) of verification following remark") \
1851 \
1852 product(uintx, CMSScheduleRemarkEdenSizeThreshold, 2*M, \
1853 "If Eden used is below this value, don't try to schedule remark") \
1854 \
1855 product(uintx, CMSScheduleRemarkEdenPenetration, 50, \
1856 "The Eden occupancy % at which to try and schedule remark pause") \
1857 \
1858 product(uintx, CMSScheduleRemarkSamplingRatio, 5, \
1859 "Start sampling Eden top at least before yg occupancy reaches" \
1860 " 1/<ratio> of the size at which we plan to schedule remark") \
1861 \
1862 product(uintx, CMSSamplingGrain, 16*K, \
1863 "The minimum distance between eden samples for CMS (see above)") \
1864 \
1865 product(bool, CMSScavengeBeforeRemark, false, \
1866 "Attempt scavenge before the CMS remark step") \
1867 \
1868 develop(bool, CMSTraceSweeper, false, \
1869 "Trace some actions of the CMS sweeper") \
1870 \
1871 product(uintx, CMSWorkQueueDrainThreshold, 10, \
1872 "Don't drain below this size per parallel worker/thief") \
1873 \
1874 manageable(intx, CMSWaitDuration, 2000, \
1875 "Time in milliseconds that CMS thread waits for young GC") \
1876 \
1877 product(bool, CMSYield, true, \
1878 "Yield between steps of concurrent mark & sweep") \
1879 \
1880 product(uintx, CMSBitMapYieldQuantum, 10*M, \
1881 "Bitmap operations should process at most this many bits" \
1882 "between yields") \
1883 \
1884 product(bool, CMSDumpAtPromotionFailure, false, \
1885 "Dump useful information about the state of the CMS old " \
1886 " generation upon a promotion failure.") \
1887 \
1888 product(bool, CMSPrintChunksInDump, false, \
1889 "In a dump enabled by CMSDumpAtPromotionFailure, include " \
1890 " more detailed information about the free chunks.") \
1891 \
1892 product(bool, CMSPrintObjectsInDump, false, \
1893 "In a dump enabled by CMSDumpAtPromotionFailure, include " \
1894 " more detailed information about the allocated objects.") \
1895 \
1896 diagnostic(bool, FLSVerifyAllHeapReferences, false, \
1897 "Verify that all refs across the FLS boundary " \
1898 " are to valid objects") \
1899 \
1900 diagnostic(bool, FLSVerifyLists, false, \
1901 "Do lots of (expensive) FreeListSpace verification") \
1902 \
1903 diagnostic(bool, FLSVerifyIndexTable, false, \
1904 "Do lots of (expensive) FLS index table verification") \
1905 \
1906 develop(bool, FLSVerifyDictionary, false, \
1907 "Do lots of (expensive) FLS dictionary verification") \
1908 \
1909 develop(bool, VerifyBlockOffsetArray, false, \
1910 "Do (expensive!) block offset array verification") \
1911 \
1912 diagnostic(bool, BlockOffsetArrayUseUnallocatedBlock, false, \
1913 "Maintain _unallocated_block in BlockOffsetArray" \
1914 " (currently applicable only to CMS collector)") \
1915 \
1916 develop(bool, TraceCMSState, false, \
1917 "Trace the state of the CMS collection") \
1918 \
1919 product(intx, RefDiscoveryPolicy, 0, \
1920 "Whether reference-based(0) or referent-based(1)") \
1921 \
1922 product(bool, ParallelRefProcEnabled, false, \
1923 "Enable parallel reference processing whenever possible") \
1924 \
1925 product(bool, ParallelRefProcBalancingEnabled, true, \
1926 "Enable balancing of reference processing queues") \
1927 \
1928 product(intx, CMSTriggerRatio, 80, \
1929 "Percentage of MinHeapFreeRatio in CMS generation that is " \
1930 "allocated before a CMS collection cycle commences") \
1931 \
1932 product(intx, CMSTriggerPermRatio, 80, \
1933 "Percentage of MinHeapFreeRatio in the CMS perm generation that " \
1934 "is allocated before a CMS collection cycle commences, that " \
1935 "also collects the perm generation") \
1936 \
1937 product(uintx, CMSBootstrapOccupancy, 50, \
1938 "Percentage CMS generation occupancy at which to " \
1939 "initiate CMS collection for bootstrapping collection stats") \
1940 \
1941 product(intx, CMSInitiatingOccupancyFraction, -1, \
1942 "Percentage CMS generation occupancy to start a CMS collection " \
1943 "cycle. A negative value means that CMSTriggerRatio is used") \
1944 \
1945 product(uintx, InitiatingHeapOccupancyPercent, 45, \
1946 "Percentage of the (entire) heap occupancy to start a " \
1947 "concurrent GC cycle. It us used by GCs that trigger a " \
1948 "concurrent GC cycle based on the occupancy of the entire heap, " \
1949 "not just one of the generations (e.g., G1). A value of 0 " \
1950 "denotes 'do constant GC cycles'.") \
1951 \
1952 product(intx, CMSInitiatingPermOccupancyFraction, -1, \
1953 "Percentage CMS perm generation occupancy to start a " \
1954 "CMScollection cycle. A negative value means that " \
1955 "CMSTriggerPermRatio is used") \
1956 \
1957 product(bool, UseCMSInitiatingOccupancyOnly, false, \
1958 "Only use occupancy as a crierion for starting a CMS collection") \
1959 \
1960 product(intx, CMSIsTooFullPercentage, 98, \
1961 "An absolute ceiling above which CMS will always consider the " \
1962 "perm gen ripe for collection") \
1963 \
1964 develop(bool, CMSTestInFreeList, false, \
1965 "Check if the coalesced range is already in the " \
1966 "free lists as claimed") \
1967 \
1968 notproduct(bool, CMSVerifyReturnedBytes, false, \
1969 "Check that all the garbage collected was returned to the " \
1970 "free lists.") \
1971 \
1972 notproduct(bool, ScavengeALot, false, \
1973 "Force scavenge at every Nth exit from the runtime system " \
1974 "(N=ScavengeALotInterval)") \
1975 \
1976 develop(bool, FullGCALot, false, \
1977 "Force full gc at every Nth exit from the runtime system " \
1978 "(N=FullGCALotInterval)") \
1979 \
1980 notproduct(bool, GCALotAtAllSafepoints, false, \
1981 "Enforce ScavengeALot/GCALot at all potential safepoints") \
1982 \
1983 product(bool, PrintPromotionFailure, false, \
1984 "Print additional diagnostic information following " \
1985 " promotion failure") \
1986 \
1987 notproduct(bool, PromotionFailureALot, false, \
1988 "Use promotion failure handling on every youngest generation " \
1989 "collection") \
1990 \
1991 develop(uintx, PromotionFailureALotCount, 1000, \
1992 "Number of promotion failures occurring at ParGCAllocBuffer" \
1993 "refill attempts (ParNew) or promotion attempts " \
1994 "(other young collectors) ") \
1995 \
1996 develop(uintx, PromotionFailureALotInterval, 5, \
1997 "Total collections between promotion failures alot") \
1998 \
1999 experimental(intx, WorkStealingSleepMillis, 1, \
2000 "Sleep time when sleep is used for yields") \
2001 \
2002 experimental(uintx, WorkStealingYieldsBeforeSleep, 5000, \
2003 "Number of yields before a sleep is done during workstealing") \
2004 \
2005 experimental(uintx, WorkStealingHardSpins, 4096, \
2006 "Number of iterations in a spin loop between checks on " \
2007 "time out of hard spin") \
2008 \
2009 experimental(uintx, WorkStealingSpinToYieldRatio, 10, \
2010 "Ratio of hard spins to calls to yield") \
2011 \
2012 product(uintx, PreserveMarkStackSize, 1024, \
2013 "Size for stack used in promotion failure handling") \
2014 \
2015 develop(uintx, ObjArrayMarkingStride, 512, \
2016 "Number of ObjArray elements to push onto the marking stack" \
2017 "before pushing a continuation entry") \
2018 \
2019 notproduct(bool, ExecuteInternalVMTests, false, \
2020 "Enable execution of internal VM tests.") \
2021 \
2022 product_pd(bool, UseTLAB, "Use thread-local object allocation") \
2023 \
2024 product_pd(bool, ResizeTLAB, \
2025 "Dynamically resize tlab size for threads") \
2026 \
2027 product(bool, ZeroTLAB, false, \
2028 "Zero out the newly created TLAB") \
2029 \
2030 product(bool, FastTLABRefill, true, \
2031 "Use fast TLAB refill code") \
2032 \
2033 product(bool, PrintTLAB, false, \
2034 "Print various TLAB related information") \
2035 \
2036 product(bool, TLABStats, true, \
2037 "Print various TLAB related information") \
2038 \
2039 product(bool, UseBlockZeroing, false, \
2040 "Use special cpu instructions for block zeroing") \
2041 \
2042 product(intx, BlockZeroingLowLimit, 2048, \
2043 "Minimum size in bytes when block zeroing will be used") \
2044 \
2045 product(bool, UseBlockCopy, false, \
2046 "Use special cpu instructions for block copy") \
2047 \
2048 product(intx, BlockCopyLowLimit, 2048, \
2049 "Minimum size in bytes when block copy will be used") \
2050 \
2051 product(bool, PrintRevisitStats, false, \
2052 "Print revisit (klass and MDO) stack related information") \
2053 \
2054 EMBEDDED_ONLY(product(bool, LowMemoryProtection, true, \
2055 "Enable LowMemoryProtection")) \
2056 \
2057 product_pd(bool, NeverActAsServerClassMachine, \
2058 "Never act like a server-class machine") \
2059 \
2060 product(bool, AlwaysActAsServerClassMachine, false, \
2061 "Always act like a server-class machine") \
2062 \
2063 product_pd(uint64_t, MaxRAM, \
2064 "Real memory size (in bytes) used to set maximum heap size") \
2065 \
2066 product(uintx, ErgoHeapSizeLimit, 0, \
2067 "Maximum ergonomically set heap size (in bytes); zero means use " \
2068 "MaxRAM / MaxRAMFraction") \
2069 \
2070 product(uintx, MaxRAMFraction, 4, \
2071 "Maximum fraction (1/n) of real memory used for maximum heap " \
2072 "size") \
2073 \
2074 product(uintx, DefaultMaxRAMFraction, 4, \
2075 "Maximum fraction (1/n) of real memory used for maximum heap " \
2076 "size; deprecated: to be renamed to MaxRAMFraction") \
2077 \
2078 product(uintx, MinRAMFraction, 2, \
2079 "Minimum fraction (1/n) of real memory used for maxmimum heap " \
2080 "size on systems with small physical memory size") \
2081 \
2082 product(uintx, InitialRAMFraction, 64, \
2083 "Fraction (1/n) of real memory used for initial heap size") \
2084 \
2085 product(bool, UseAutoGCSelectPolicy, false, \
2086 "Use automatic collection selection policy") \
2087 \
2088 product(uintx, AutoGCSelectPauseMillis, 5000, \
2089 "Automatic GC selection pause threshhold in ms") \
2090 \
2091 product(bool, UseAdaptiveSizePolicy, true, \
2092 "Use adaptive generation sizing policies") \
2093 \
2094 product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \
2095 "Use adaptive survivor sizing policies") \
2096 \
2097 product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \
2098 "Use adaptive young-old sizing policies at minor collections") \
2099 \
2100 product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \
2101 "Use adaptive young-old sizing policies at major collections") \
2102 \
2103 product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \
2104 "Use statistics from System.GC for adaptive size policy") \
2105 \
2106 product(bool, UseAdaptiveGCBoundary, false, \
2107 "Allow young-old boundary to move") \
2108 \
2109 develop(bool, TraceAdaptiveGCBoundary, false, \
2110 "Trace young-old boundary moves") \
2111 \
2112 develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \
2113 "Resize the virtual spaces of the young or old generations") \
2114 \
2115 product(uintx, AdaptiveSizeThroughPutPolicy, 0, \
2116 "Policy for changeing generation size for throughput goals") \
2117 \
2118 product(uintx, AdaptiveSizePausePolicy, 0, \
2119 "Policy for changing generation size for pause goals") \
2120 \
2121 develop(bool, PSAdjustTenuredGenForMinorPause, false, \
2122 "Adjust tenured generation to achive a minor pause goal") \
2123 \
2124 develop(bool, PSAdjustYoungGenForMajorPause, false, \
2125 "Adjust young generation to achive a major pause goal") \
2126 \
2127 product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \
2128 "Number of steps where heuristics is used before data is used") \
2129 \
2130 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \
2131 "Number of collections before the adaptive sizing is started") \
2132 \
2133 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \
2134 "Collecton interval for printing information; zero => never") \
2135 \
2136 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \
2137 "Use adaptive minimum footprint as a goal") \
2138 \
2139 product(uintx, AdaptiveSizePolicyWeight, 10, \
2140 "Weight given to exponential resizing, between 0 and 100") \
2141 \
2142 product(uintx, AdaptiveTimeWeight, 25, \
2143 "Weight given to time in adaptive policy, between 0 and 100") \
2144 \
2145 product(uintx, PausePadding, 1, \
2146 "How much buffer to keep for pause time") \
2147 \
2148 product(uintx, PromotedPadding, 3, \
2149 "How much buffer to keep for promotion failure") \
2150 \
2151 product(uintx, SurvivorPadding, 3, \
2152 "How much buffer to keep for survivor overflow") \
2153 \
2154 product(uintx, AdaptivePermSizeWeight, 20, \
2155 "Weight for perm gen exponential resizing, between 0 and 100") \
2156 \
2157 product(uintx, PermGenPadding, 3, \
2158 "How much buffer to keep for perm gen sizing") \
2159 \
2160 product(uintx, ThresholdTolerance, 10, \
2161 "Allowed collection cost difference between generations") \
2162 \
2163 product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \
2164 "If collection costs are within margin, reduce both by full " \
2165 "delta") \
2166 \
2167 product(uintx, YoungGenerationSizeIncrement, 20, \
2168 "Adaptive size percentage change in young generation") \
2169 \
2170 product(uintx, YoungGenerationSizeSupplement, 80, \
2171 "Supplement to YoungedGenerationSizeIncrement used at startup") \
2172 \
2173 product(uintx, YoungGenerationSizeSupplementDecay, 8, \
2174 "Decay factor to YoungedGenerationSizeSupplement") \
2175 \
2176 product(uintx, TenuredGenerationSizeIncrement, 20, \
2177 "Adaptive size percentage change in tenured generation") \
2178 \
2179 product(uintx, TenuredGenerationSizeSupplement, 80, \
2180 "Supplement to TenuredGenerationSizeIncrement used at startup") \
2181 \
2182 product(uintx, TenuredGenerationSizeSupplementDecay, 2, \
2183 "Decay factor to TenuredGenerationSizeIncrement") \
2184 \
2185 product(uintx, MaxGCPauseMillis, max_uintx, \
2186 "Adaptive size policy maximum GC pause time goal in msec, " \
2187 "or (G1 Only) the max. GC time per MMU time slice") \
2188 \
2189 product(uintx, GCPauseIntervalMillis, 0, \
2190 "Time slice for MMU specification") \
2191 \
2192 product(uintx, MaxGCMinorPauseMillis, max_uintx, \
2193 "Adaptive size policy maximum GC minor pause time goal in msec") \
2194 \
2195 product(uintx, GCTimeRatio, 99, \
2196 "Adaptive size policy application time to GC time ratio") \
2197 \
2198 product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \
2199 "Adaptive size scale down factor for shrinking") \
2200 \
2201 product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \
2202 "Adaptive size decays the major cost for long major intervals") \
2203 \
2204 product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \
2205 "Time scale over which major costs decay") \
2206 \
2207 product(uintx, MinSurvivorRatio, 3, \
2208 "Minimum ratio of young generation/survivor space size") \
2209 \
2210 product(uintx, InitialSurvivorRatio, 8, \
2211 "Initial ratio of eden/survivor space size") \
2212 \
2213 product(uintx, BaseFootPrintEstimate, 256*M, \
2214 "Estimate of footprint other than Java Heap") \
2215 \
2216 product(bool, UseGCOverheadLimit, true, \
2217 "Use policy to limit of proportion of time spent in GC " \
2218 "before an OutOfMemory error is thrown") \
2219 \
2220 product(uintx, GCTimeLimit, 98, \
2221 "Limit of proportion of time spent in GC before an OutOfMemory" \
2222 "error is thrown (used with GCHeapFreeLimit)") \
2223 \
2224 product(uintx, GCHeapFreeLimit, 2, \
2225 "Minimum percentage of free space after a full GC before an " \
2226 "OutOfMemoryError is thrown (used with GCTimeLimit)") \
2227 \
2228 develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \
2229 "Number of consecutive collections before gc time limit fires") \
2230 \
2231 product(bool, PrintAdaptiveSizePolicy, false, \
2232 "Print information about AdaptiveSizePolicy") \
2233 \
2234 product(intx, PrefetchCopyIntervalInBytes, -1, \
2235 "How far ahead to prefetch destination area (<= 0 means off)") \
2236 \
2237 product(intx, PrefetchScanIntervalInBytes, -1, \
2238 "How far ahead to prefetch scan area (<= 0 means off)") \
2239 \
2240 product(intx, PrefetchFieldsAhead, -1, \
2241 "How many fields ahead to prefetch in oop scan (<= 0 means off)") \
2242 \
2243 develop(bool, UsePrefetchQueue, true, \
2244 "Use the prefetch queue during PS promotion") \
2245 \
2246 diagnostic(bool, VerifyBeforeExit, trueInDebug, \
2247 "Verify system before exiting") \
2248 \
2249 diagnostic(bool, VerifyBeforeGC, false, \
2250 "Verify memory system before GC") \
2251 \
2252 diagnostic(bool, VerifyAfterGC, false, \
2253 "Verify memory system after GC") \
2254 \
2255 diagnostic(bool, VerifyDuringGC, false, \
2256 "Verify memory system during GC (between phases)") \
2257 \
2258 diagnostic(bool, GCParallelVerificationEnabled, true, \
2259 "Enable parallel memory system verification") \
2260 \
2261 diagnostic(bool, DeferInitialCardMark, false, \
2262 "When +ReduceInitialCardMarks, explicitly defer any that " \
2263 "may arise from new_pre_store_barrier") \
2264 \
2265 diagnostic(bool, VerifyRememberedSets, false, \
2266 "Verify GC remembered sets") \
2267 \
2268 diagnostic(bool, VerifyObjectStartArray, true, \
2269 "Verify GC object start array if verify before/after") \
2270 \
2271 product(bool, DisableExplicitGC, false, \
2272 "Tells whether calling System.gc() does a full GC") \
2273 \
2274 notproduct(bool, CheckMemoryInitialization, false, \
2275 "Checks memory initialization") \
2276 \
2277 product(bool, CollectGen0First, false, \
2278 "Collect youngest generation before each full GC") \
2279 \
2280 diagnostic(bool, BindCMSThreadToCPU, false, \
2281 "Bind CMS Thread to CPU if possible") \
2282 \
2283 diagnostic(uintx, CPUForCMSThread, 0, \
2284 "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \
2285 \
2286 product(bool, BindGCTaskThreadsToCPUs, false, \
2287 "Bind GCTaskThreads to CPUs if possible") \
2288 \
2289 product(bool, UseGCTaskAffinity, false, \
2290 "Use worker affinity when asking for GCTasks") \
2291 \
2292 product(uintx, ProcessDistributionStride, 4, \
2293 "Stride through processors when distributing processes") \
2294 \
2295 product(uintx, CMSCoordinatorYieldSleepCount, 10, \
2296 "number of times the coordinator GC thread will sleep while " \
2297 "yielding before giving up and resuming GC") \
2298 \
2299 product(uintx, CMSYieldSleepCount, 0, \
2300 "number of times a GC thread (minus the coordinator) " \
2301 "will sleep while yielding before giving up and resuming GC") \
2302 \
2303 /* gc tracing */ \
2304 manageable(bool, PrintGC, false, \
2305 "Print message at garbage collect") \
2306 \
2307 manageable(bool, PrintGCDetails, false, \
2308 "Print more details at garbage collect") \
2309 \
2310 manageable(bool, PrintGCDateStamps, false, \
2311 "Print date stamps at garbage collect") \
2312 \
2313 manageable(bool, PrintGCTimeStamps, false, \
2314 "Print timestamps at garbage collect") \
2315 \
2316 product(bool, PrintGCTaskTimeStamps, false, \
2317 "Print timestamps for individual gc worker thread tasks") \
2318 \
2319 develop(intx, ConcGCYieldTimeout, 0, \
2320 "If non-zero, assert that GC threads yield within this # of ms.") \
2321 \
2322 notproduct(bool, TraceMarkSweep, false, \
2323 "Trace mark sweep") \
2324 \
2325 product(bool, PrintReferenceGC, false, \
2326 "Print times spent handling reference objects during GC " \
2327 " (enabled only when PrintGCDetails)") \
2328 \
2329 develop(bool, TraceReferenceGC, false, \
2330 "Trace handling of soft/weak/final/phantom references") \
2331 \
2332 develop(bool, TraceFinalizerRegistration, false, \
2333 "Trace registration of final references") \
2334 \
2335 notproduct(bool, TraceScavenge, false, \
2336 "Trace scavenge") \
2337 \
2338 product_rw(bool, TraceClassLoading, false, \
2339 "Trace all classes loaded") \
2340 \
2341 product(bool, TraceClassLoadingPreorder, false, \
2342 "Trace all classes loaded in order referenced (not loaded)") \
2343 \
2344 product_rw(bool, TraceClassUnloading, false, \
2345 "Trace unloading of classes") \
2346 \
2347 product_rw(bool, TraceLoaderConstraints, false, \
2348 "Trace loader constraints") \
2349 \
2350 product(bool, TraceGen0Time, false, \
2351 "Trace accumulated time for Gen 0 collection") \
2352 \
2353 product(bool, TraceGen1Time, false, \
2354 "Trace accumulated time for Gen 1 collection") \
2355 \
2356 product(bool, PrintTenuringDistribution, false, \
2357 "Print tenuring age information") \
2358 \
2359 product_rw(bool, PrintHeapAtGC, false, \
2360 "Print heap layout before and after each GC") \
2361 \
2362 product_rw(bool, PrintHeapAtGCExtended, false, \
2363 "Prints extended information about the layout of the heap " \
2364 "when -XX:+PrintHeapAtGC is set") \
2365 \
2366 product(bool, PrintHeapAtSIGBREAK, true, \
2367 "Print heap layout in response to SIGBREAK") \
2368 \
2369 manageable(bool, PrintClassHistogramBeforeFullGC, false, \
2370 "Print a class histogram before any major stop-world GC") \
2371 \
2372 manageable(bool, PrintClassHistogramAfterFullGC, false, \
2373 "Print a class histogram after any major stop-world GC") \
2374 \
2375 manageable(bool, PrintClassHistogram, false, \
2376 "Print a histogram of class instances") \
2377 \
2378 develop(bool, TraceWorkGang, false, \
2379 "Trace activities of work gangs") \
2380 \
2381 product(bool, TraceParallelOldGCTasks, false, \
2382 "Trace multithreaded GC activity") \
2383 \
2384 develop(bool, TraceBlockOffsetTable, false, \
2385 "Print BlockOffsetTable maps") \
2386 \
2387 develop(bool, TraceCardTableModRefBS, false, \
2388 "Print CardTableModRefBS maps") \
2389 \
2390 develop(bool, TraceGCTaskManager, false, \
2391 "Trace actions of the GC task manager") \
2392 \
2393 develop(bool, TraceGCTaskQueue, false, \
2394 "Trace actions of the GC task queues") \
2395 \
2396 diagnostic(bool, TraceGCTaskThread, false, \
2397 "Trace actions of the GC task threads") \
2398 \
2399 product(bool, PrintParallelOldGCPhaseTimes, false, \
2400 "Print the time taken by each parallel old gc phase." \
2401 "PrintGCDetails must also be enabled.") \
2402 \
2403 develop(bool, TraceParallelOldGCMarkingPhase, false, \
2404 "Trace parallel old gc marking phase") \
2405 \
2406 develop(bool, TraceParallelOldGCSummaryPhase, false, \
2407 "Trace parallel old gc summary phase") \
2408 \
2409 develop(bool, TraceParallelOldGCCompactionPhase, false, \
2410 "Trace parallel old gc compaction phase") \
2411 \
2412 develop(bool, TraceParallelOldGCDensePrefix, false, \
2413 "Trace parallel old gc dense prefix computation") \
2414 \
2415 develop(bool, IgnoreLibthreadGPFault, false, \
2416 "Suppress workaround for libthread GP fault") \
2417 \
2418 product(bool, PrintJNIGCStalls, false, \
2419 "Print diagnostic message when GC is stalled" \
2420 "by JNI critical section") \
2421 \
2422 /* GC log rotation setting */ \
2423 \
2424 product(bool, UseGCLogFileRotation, false, \
2425 "Prevent large gclog file for long running app. " \
2426 "Requires -Xloggc:<filename>") \
2427 \
2428 product(uintx, NumberOfGCLogFiles, 0, \
2429 "Number of gclog files in rotation, " \
2430 "Default: 0, no rotation") \
2431 \
2432 product(uintx, GCLogFileSize, 0, \
2433 "GC log file size, Default: 0 bytes, no rotation " \
2434 "Only valid with UseGCLogFileRotation") \
2435 \
2436 /* JVMTI heap profiling */ \
2437 \
2438 diagnostic(bool, TraceJVMTIObjectTagging, false, \
2439 "Trace JVMTI object tagging calls") \
2440 \
2441 diagnostic(bool, VerifyBeforeIteration, false, \
2442 "Verify memory system before JVMTI iteration") \
2443 \
2444 /* compiler interface */ \
2445 \
2446 develop(bool, CIPrintCompilerName, false, \
2447 "when CIPrint is active, print the name of the active compiler") \
2448 \
2449 develop(bool, CIPrintCompileQueue, false, \
2450 "display the contents of the compile queue whenever a " \
2451 "compilation is enqueued") \
2452 \
2453 develop(bool, CIPrintRequests, false, \
2454 "display every request for compilation") \
2455 \
2456 product(bool, CITime, false, \
2457 "collect timing information for compilation") \
2458 \
2459 develop(bool, CITimeEach, false, \
2460 "display timing information after each successful compilation") \
2461 \
2462 develop(bool, CICountOSR, true, \
2463 "use a separate counter when assigning ids to osr compilations") \
2464 \
2465 develop(bool, CICompileNatives, true, \
2466 "compile native methods if supported by the compiler") \
2467 \
2468 develop_pd(bool, CICompileOSR, \
2469 "compile on stack replacement methods if supported by the " \
2470 "compiler") \
2471 \
2472 develop(bool, CIPrintMethodCodes, false, \
2473 "print method bytecodes of the compiled code") \
2474 \
2475 develop(bool, CIPrintTypeFlow, false, \
2476 "print the results of ciTypeFlow analysis") \
2477 \
2478 develop(bool, CITraceTypeFlow, false, \
2479 "detailed per-bytecode tracing of ciTypeFlow analysis") \
2480 \
2481 develop(intx, CICloneLoopTestLimit, 100, \
2482 "size limit for blocks heuristically cloned in ciTypeFlow") \
2483 \
2484 develop(intx, OSROnlyBCI, -1, \
2485 "OSR only at this bci. Negative values mean exclude that bci") \
2486 \
2487 /* temp diagnostics */ \
2488 \
2489 diagnostic(bool, TraceRedundantCompiles, false, \
2490 "Have compile broker print when a request already in the queue is"\
2491 " requested again") \
2492 \
2493 diagnostic(bool, InitialCompileFast, false, \
2494 "Initial compile at CompLevel_fast_compile") \
2495 \
2496 diagnostic(bool, InitialCompileReallyFast, false, \
2497 "Initial compile at CompLevel_really_fast_compile (no profile)") \
2498 \
2499 diagnostic(bool, FullProfileOnReInterpret, true, \
2500 "On re-interpret unc-trap compile next at CompLevel_fast_compile")\
2501 \
2502 /* compiler */ \
2503 \
2504 product(intx, CICompilerCount, CI_COMPILER_COUNT, \
2505 "Number of compiler threads to run") \
2506 \
2507 product(intx, CompilationPolicyChoice, 0, \
2508 "which compilation policy (0/1)") \
2509 \
2510 develop(bool, UseStackBanging, true, \
2511 "use stack banging for stack overflow checks (required for " \
2512 "proper StackOverflow handling; disable only to measure cost " \
2513 "of stackbanging)") \
2514 \
2515 develop(bool, Use24BitFPMode, true, \
2516 "Set 24-bit FPU mode on a per-compile basis ") \
2517 \
2518 develop(bool, Use24BitFP, true, \
2519 "use FP instructions that produce 24-bit precise results") \
2520 \
2521 develop(bool, UseStrictFP, true, \
2522 "use strict fp if modifier strictfp is set") \
2523 \
2524 develop(bool, GenerateSynchronizationCode, true, \
2525 "generate locking/unlocking code for synchronized methods and " \
2526 "monitors") \
2527 \
2528 develop(bool, GenerateCompilerNullChecks, true, \
2529 "Generate explicit null checks for loads/stores/calls") \
2530 \
2531 develop(bool, GenerateRangeChecks, true, \
2532 "Generate range checks for array accesses") \
2533 \
2534 develop_pd(bool, ImplicitNullChecks, \
2535 "generate code for implicit null checks") \
2536 \
2537 product(bool, PrintSafepointStatistics, false, \
2538 "print statistics about safepoint synchronization") \
2539 \
2540 product(intx, PrintSafepointStatisticsCount, 300, \
2541 "total number of safepoint statistics collected " \
2542 "before printing them out") \
2543 \
2544 product(intx, PrintSafepointStatisticsTimeout, -1, \
2545 "print safepoint statistics only when safepoint takes" \
2546 " more than PrintSafepointSatisticsTimeout in millis") \
2547 \
2548 product(bool, TraceSafepointCleanupTime, false, \
2549 "print the break down of clean up tasks performed during" \
2550 " safepoint") \
2551 \
2552 develop(bool, InlineAccessors, true, \
2553 "inline accessor methods (get/set)") \
2554 \
2555 product(bool, Inline, true, \
2556 "enable inlining") \
2557 \
2558 product(bool, ClipInlining, true, \
2559 "clip inlining if aggregate method exceeds DesiredMethodLimit") \
2560 \
2561 develop(bool, UseCHA, true, \
2562 "enable CHA") \
2563 \
2564 product(bool, UseTypeProfile, true, \
2565 "Check interpreter profile for historically monomorphic calls") \
2566 \
2567 product(intx, TypeProfileMajorReceiverPercent, 90, \
2568 "% of major receiver type to all profiled receivers") \
2569 \
2570 notproduct(bool, TimeCompiler, false, \
2571 "time the compiler") \
2572 \
2573 notproduct(bool, TimeCompiler2, false, \
2574 "detailed time the compiler (requires +TimeCompiler)") \
2575 \
2576 diagnostic(bool, PrintInlining, false, \
2577 "prints inlining optimizations") \
2578 \
2579 diagnostic(bool, PrintIntrinsics, false, \
2580 "prints attempted and successful inlining of intrinsics") \
2581 \
2582 product(bool, UseCountLeadingZerosInstruction, false, \
2583 "Use count leading zeros instruction") \
2584 \
2585 product(bool, UsePopCountInstruction, false, \
2586 "Use population count instruction") \
2587 \
2588 diagnostic(ccstrlist, DisableIntrinsic, "", \
2589 "do not expand intrinsics whose (internal) names appear here") \
2590 \
2591 develop(bool, StressReflectiveCode, false, \
2592 "Use inexact types at allocations, etc., to test reflection") \
2593 \
2594 develop(bool, EagerInitialization, false, \
2595 "Eagerly initialize classes if possible") \
2596 \
2597 develop(bool, TraceMethodReplacement, false, \
2598 "Print when methods are replaced do to recompilation") \
2599 \
2600 develop(bool, PrintMethodFlushing, false, \
2601 "print the nmethods being flushed") \
2602 \
2603 notproduct(bool, LogMultipleMutexLocking, false, \
2604 "log locking and unlocking of mutexes (only if multiple locks " \
2605 "are held)") \
2606 \
2607 develop(bool, UseRelocIndex, false, \
2608 "use an index to speed random access to relocations") \
2609 \
2610 develop(bool, StressCodeBuffers, false, \
2611 "Exercise code buffer expansion and other rare state changes") \
2612 \
2613 diagnostic(bool, DebugNonSafepoints, trueInDebug, \
2614 "Generate extra debugging info for non-safepoints in nmethods") \
2615 \
2616 diagnostic(bool, DebugInlinedCalls, true, \
2617 "If false, restricts profiled locations to the root method only") \
2618 \
2619 product(bool, PrintVMOptions, false, \
2620 "Print flags that appeared on the command line") \
2621 \
2622 product(bool, IgnoreUnrecognizedVMOptions, false, \
2623 "Ignore unrecognized VM options") \
2624 \
2625 product(bool, PrintCommandLineFlags, false, \
2626 "Print flags specified on command line or set by ergonomics") \
2627 \
2628 product(bool, PrintFlagsInitial, false, \
2629 "Print all VM flags before argument processing and exit VM") \
2630 \
2631 product(bool, PrintFlagsFinal, false, \
2632 "Print all VM flags after argument and ergonomic processing") \
2633 \
2634 notproduct(bool, PrintFlagsWithComments, false, \
2635 "Print all VM flags with default values and descriptions and exit")\
2636 \
2637 diagnostic(bool, SerializeVMOutput, true, \
2638 "Use a mutex to serialize output to tty and hotspot.log") \
2639 \
2640 diagnostic(bool, DisplayVMOutput, true, \
2641 "Display all VM output on the tty, independently of LogVMOutput") \
2642 \
2643 diagnostic(bool, LogVMOutput, trueInDebug, \
2644 "Save VM output to hotspot.log, or to LogFile") \
2645 \
2646 diagnostic(ccstr, LogFile, NULL, \
2647 "If LogVMOutput is on, save VM output to this file [hotspot.log]") \
2648 \
2649 product(ccstr, ErrorFile, NULL, \
2650 "If an error occurs, save the error data to this file " \
2651 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \
2652 \
2653 product(bool, DisplayVMOutputToStderr, false, \
2654 "If DisplayVMOutput is true, display all VM output to stderr") \
2655 \
2656 product(bool, DisplayVMOutputToStdout, false, \
2657 "If DisplayVMOutput is true, display all VM output to stdout") \
2658 \
2659 product(bool, UseHeavyMonitors, false, \
2660 "use heavyweight instead of lightweight Java monitors") \
2661 \
2662 notproduct(bool, PrintSymbolTableSizeHistogram, false, \
2663 "print histogram of the symbol table") \
2664 \
2665 notproduct(bool, ExitVMOnVerifyError, false, \
2666 "standard exit from VM if bytecode verify error " \
2667 "(only in debug mode)") \
2668 \
2669 notproduct(ccstr, AbortVMOnException, NULL, \
2670 "Call fatal if this exception is thrown. Example: " \
2671 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \
2672 \
2673 notproduct(ccstr, AbortVMOnExceptionMessage, NULL, \
2674 "Call fatal if the exception pointed by AbortVMOnException " \
2675 "has this message.") \
2676 \
2677 develop(bool, DebugVtables, false, \
2678 "add debugging code to vtable dispatch") \
2679 \
2680 develop(bool, PrintVtables, false, \
2681 "print vtables when printing klass") \
2682 \
2683 notproduct(bool, PrintVtableStats, false, \
2684 "print vtables stats at end of run") \
2685 \
2686 develop(bool, TraceCreateZombies, false, \
2687 "trace creation of zombie nmethods") \
2688 \
2689 notproduct(bool, IgnoreLockingAssertions, false, \
2690 "disable locking assertions (for speed)") \
2691 \
2692 notproduct(bool, VerifyLoopOptimizations, false, \
2693 "verify major loop optimizations") \
2694 \
2695 product(bool, RangeCheckElimination, true, \
2696 "Split loop iterations to eliminate range checks") \
2697 \
2698 develop_pd(bool, UncommonNullCast, \
2699 "track occurrences of null in casts; adjust compiler tactics") \
2700 \
2701 develop(bool, TypeProfileCasts, true, \
2702 "treat casts like calls for purposes of type profiling") \
2703 \
2704 develop(bool, MonomorphicArrayCheck, true, \
2705 "Uncommon-trap array store checks that require full type check") \
2706 \
2707 diagnostic(bool, ProfileDynamicTypes, true, \
2708 "do extra type profiling and use it more aggressively") \
2709 \
2710 develop(bool, DelayCompilationDuringStartup, true, \
2711 "Delay invoking the compiler until main application class is " \
2712 "loaded") \
2713 \
2714 develop(bool, CompileTheWorld, false, \
2715 "Compile all methods in all classes in bootstrap class path " \
2716 "(stress test)") \
2717 \
2718 develop(bool, CompileTheWorldPreloadClasses, true, \
2719 "Preload all classes used by a class before start loading") \
2720 \
2721 notproduct(intx, CompileTheWorldSafepointInterval, 100, \
2722 "Force a safepoint every n compiles so sweeper can keep up") \
2723 \
2724 develop(bool, TraceIterativeGVN, false, \
2725 "Print progress during Iterative Global Value Numbering") \
2726 \
2727 develop(bool, FillDelaySlots, true, \
2728 "Fill delay slots (on SPARC only)") \
2729 \
2730 develop(bool, VerifyIterativeGVN, false, \
2731 "Verify Def-Use modifications during sparse Iterative Global " \
2732 "Value Numbering") \
2733 \
2734 notproduct(bool, TracePhaseCCP, false, \
2735 "Print progress during Conditional Constant Propagation") \
2736 \
2737 develop(bool, TimeLivenessAnalysis, false, \
2738 "Time computation of bytecode liveness analysis") \
2739 \
2740 develop(bool, TraceLivenessGen, false, \
2741 "Trace the generation of liveness analysis information") \
2742 \
2743 notproduct(bool, TraceLivenessQuery, false, \
2744 "Trace queries of liveness analysis information") \
2745 \
2746 notproduct(bool, CollectIndexSetStatistics, false, \
2747 "Collect information about IndexSets") \
2748 \
2749 develop(bool, PrintDominators, false, \
2750 "Print out dominator trees for GVN") \
2751 \
2752 develop(bool, UseLoopSafepoints, true, \
2753 "Generate Safepoint nodes in every loop") \
2754 \
2755 notproduct(bool, TraceCISCSpill, false, \
2756 "Trace allocators use of cisc spillable instructions") \
2757 \
2758 notproduct(bool, TraceSpilling, false, \
2759 "Trace spilling") \
2760 \
2761 product(bool, SplitIfBlocks, true, \
2762 "Clone compares and control flow through merge points to fold " \
2763 "some branches") \
2764 \
2765 develop(intx, FastAllocateSizeLimit, 128*K, \
2766 /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \
2767 "Inline allocations larger than this in doublewords must go slow")\
2768 \
2769 product(bool, AggressiveOpts, false, \
2770 "Enable aggressive optimizations - see arguments.cpp") \
2771 \
2772 product(bool, UseStringCache, false, \
2773 "Enable String cache capabilities on String.java") \
2774 \
2775 /* statistics */ \
2776 develop(bool, CountCompiledCalls, false, \
2777 "counts method invocations") \
2778 \
2779 notproduct(bool, CountRuntimeCalls, false, \
2780 "counts VM runtime calls") \
2781 \
2782 develop(bool, CountJNICalls, false, \
2783 "counts jni method invocations") \
2784 \
2785 notproduct(bool, CountJVMCalls, false, \
2786 "counts jvm method invocations") \
2787 \
2788 notproduct(bool, CountRemovableExceptions, false, \
2789 "count exceptions that could be replaced by branches due to " \
2790 "inlining") \
2791 \
2792 notproduct(bool, ICMissHistogram, false, \
2793 "produce histogram of IC misses") \
2794 \
2795 notproduct(bool, PrintClassStatistics, false, \
2796 "prints class statistics at end of run") \
2797 \
2798 notproduct(bool, PrintMethodStatistics, false, \
2799 "prints method statistics at end of run") \
2800 \
2801 /* interpreter */ \
2802 develop(bool, ClearInterpreterLocals, false, \
2803 "Always clear local variables of interpreter activations upon " \
2804 "entry") \
2805 \
2806 product_pd(bool, RewriteBytecodes, \
2807 "Allow rewriting of bytecodes (bytecodes are not immutable)") \
2808 \
2809 product_pd(bool, RewriteFrequentPairs, \
2810 "Rewrite frequently used bytecode pairs into a single bytecode") \
2811 \
2812 diagnostic(bool, PrintInterpreter, false, \
2813 "Prints the generated interpreter code") \
2814 \
2815 product(bool, UseInterpreter, true, \
2816 "Use interpreter for non-compiled methods") \
2817 \
2818 develop(bool, UseFastSignatureHandlers, true, \
2819 "Use fast signature handlers for native calls") \
2820 \
2821 develop(bool, UseV8InstrsOnly, false, \
2822 "Use SPARC-V8 Compliant instruction subset") \
2823 \
2824 product(bool, UseNiagaraInstrs, false, \
2825 "Use Niagara-efficient instruction subset") \
2826 \
2827 develop(bool, UseCASForSwap, false, \
2828 "Do not use swap instructions, but only CAS (in a loop) on SPARC")\
2829 \
2830 product(bool, UseLoopCounter, true, \
2831 "Increment invocation counter on backward branch") \
2832 \
2833 product(bool, UseFastEmptyMethods, true, \
2834 "Use fast method entry code for empty methods") \
2835 \
2836 product(bool, UseFastAccessorMethods, true, \
2837 "Use fast method entry code for accessor methods") \
2838 \
2839 product_pd(bool, UseOnStackReplacement, \
2840 "Use on stack replacement, calls runtime if invoc. counter " \
2841 "overflows in loop") \
2842 \
2843 notproduct(bool, TraceOnStackReplacement, false, \
2844 "Trace on stack replacement") \
2845 \
2846 develop(bool, PoisonOSREntry, true, \
2847 "Detect abnormal calls to OSR code") \
2848 \
2849 product_pd(bool, PreferInterpreterNativeStubs, \
2850 "Use always interpreter stubs for native methods invoked via " \
2851 "interpreter") \
2852 \
2853 develop(bool, CountBytecodes, false, \
2854 "Count number of bytecodes executed") \
2855 \
2856 develop(bool, PrintBytecodeHistogram, false, \
2857 "Print histogram of the executed bytecodes") \
2858 \
2859 develop(bool, PrintBytecodePairHistogram, false, \
2860 "Print histogram of the executed bytecode pairs") \
2861 \
2862 diagnostic(bool, PrintSignatureHandlers, false, \
2863 "Print code generated for native method signature handlers") \
2864 \
2865 develop(bool, VerifyOops, false, \
2866 "Do plausibility checks for oops") \
2867 \
2868 develop(bool, CheckUnhandledOops, false, \
2869 "Check for unhandled oops in VM code") \
2870 \
2871 develop(bool, VerifyJNIFields, trueInDebug, \
2872 "Verify jfieldIDs for instance fields") \
2873 \
2874 notproduct(bool, VerifyJNIEnvThread, false, \
2875 "Verify JNIEnv.thread == Thread::current() when entering VM " \
2876 "from JNI") \
2877 \
2878 develop(bool, VerifyFPU, false, \
2879 "Verify FPU state (check for NaN's, etc.)") \
2880 \
2881 develop(bool, VerifyThread, false, \
2882 "Watch the thread register for corruption (SPARC only)") \
2883 \
2884 develop(bool, VerifyActivationFrameSize, false, \
2885 "Verify that activation frame didn't become smaller than its " \
2886 "minimal size") \
2887 \
2888 develop(bool, TraceFrequencyInlining, false, \
2889 "Trace frequency based inlining") \
2890 \
2891 notproduct(bool, TraceTypeProfile, false, \
2892 "Trace type profile") \
2893 \
2894 develop_pd(bool, InlineIntrinsics, \
2895 "Inline intrinsics that can be statically resolved") \
2896 \
2897 product_pd(bool, ProfileInterpreter, \
2898 "Profile at the bytecode level during interpretation") \
2899 \
2900 develop_pd(bool, ProfileTraps, \
2901 "Profile deoptimization traps at the bytecode level") \
2902 \
2903 product(intx, ProfileMaturityPercentage, 20, \
2904 "number of method invocations/branches (expressed as % of " \
2905 "CompileThreshold) before using the method's profile") \
2906 \
2907 develop(bool, PrintMethodData, false, \
2908 "Print the results of +ProfileInterpreter at end of run") \
2909 \
2910 develop(bool, VerifyDataPointer, trueInDebug, \
2911 "Verify the method data pointer during interpreter profiling") \
2912 \
2913 develop(bool, VerifyCompiledCode, false, \
2914 "Include miscellaneous runtime verifications in nmethod code; " \
2915 "default off because it disturbs nmethod size heuristics") \
2916 \
2917 notproduct(bool, CrashGCForDumpingJavaThread, false, \
2918 "Manually make GC thread crash then dump java stack trace; " \
2919 "Test only") \
2920 \
2921 /* compilation */ \
2922 product(bool, UseCompiler, true, \
2923 "use compilation") \
2924 \
2925 develop(bool, TraceCompilationPolicy, false, \
2926 "Trace compilation policy") \
2927 \
2928 develop(bool, TimeCompilationPolicy, false, \
2929 "Time the compilation policy") \
2930 \
2931 product(bool, UseCounterDecay, true, \
2932 "adjust recompilation counters") \
2933 \
2934 develop(intx, CounterHalfLifeTime, 30, \
2935 "half-life time of invocation counters (in secs)") \
2936 \
2937 develop(intx, CounterDecayMinIntervalLength, 500, \
2938 "Min. ms. between invocation of CounterDecay") \
2939 \
2940 product(bool, AlwaysCompileLoopMethods, false, \
2941 "when using recompilation, never interpret methods " \
2942 "containing loops") \
2943 \
2944 product(bool, DontCompileHugeMethods, true, \
2945 "don't compile methods > HugeMethodLimit") \
2946 \
2947 /* Bytecode escape analysis estimation. */ \
2948 product(bool, EstimateArgEscape, true, \
2949 "Analyze bytecodes to estimate escape state of arguments") \
2950 \
2951 product(intx, BCEATraceLevel, 0, \
2952 "How much tracing to do of bytecode escape analysis estimates") \
2953 \
2954 product(intx, MaxBCEAEstimateLevel, 5, \
2955 "Maximum number of nested calls that are analyzed by BC EA.") \
2956 \
2957 product(intx, MaxBCEAEstimateSize, 150, \
2958 "Maximum bytecode size of a method to be analyzed by BC EA.") \
2959 \
2960 product(intx, AllocatePrefetchStyle, 1, \
2961 "0 = no prefetch, " \
2962 "1 = prefetch instructions for each allocation, " \
2963 "2 = use TLAB watermark to gate allocation prefetch, " \
2964 "3 = use BIS instruction on Sparc for allocation prefetch") \
2965 \
2966 product(intx, AllocatePrefetchDistance, -1, \
2967 "Distance to prefetch ahead of allocation pointer") \
2968 \
2969 product(intx, AllocatePrefetchLines, 3, \
2970 "Number of lines to prefetch ahead of array allocation pointer") \
2971 \
2972 product(intx, AllocateInstancePrefetchLines, 1, \
2973 "Number of lines to prefetch ahead of instance allocation pointer") \
2974 \
2975 product(intx, AllocatePrefetchStepSize, 16, \
2976 "Step size in bytes of sequential prefetch instructions") \
2977 \
2978 product(intx, AllocatePrefetchInstr, 0, \
2979 "Prefetch instruction to prefetch ahead of allocation pointer") \
2980 \
2981 product(intx, ReadPrefetchInstr, 0, \
2982 "Prefetch instruction to prefetch ahead") \
2983 \
2984 product(uintx, ArraycopySrcPrefetchDistance, 0, \
2985 "Distance to prefetch source array in arracopy") \
2986 \
2987 product(uintx, ArraycopyDstPrefetchDistance, 0, \
2988 "Distance to prefetch destination array in arracopy") \
2989 \
2990 /* deoptimization */ \
2991 develop(bool, TraceDeoptimization, false, \
2992 "Trace deoptimization") \
2993 \
2994 develop(bool, DebugDeoptimization, false, \
2995 "Tracing various information while debugging deoptimization") \
2996 \
2997 product(intx, SelfDestructTimer, 0, \
2998 "Will cause VM to terminate after a given time (in minutes) " \
2999 "(0 means off)") \
3000 \
3001 product(intx, MaxJavaStackTraceDepth, 1024, \
3002 "Max. no. of lines in the stack trace for Java exceptions " \
3003 "(0 means all)") \
3004 \
3005 NOT_EMBEDDED(diagnostic(intx, GuaranteedSafepointInterval, 1000, \
3006 "Guarantee a safepoint (at least) every so many milliseconds " \
3007 "(0 means none)")) \
3008 \
3009 EMBEDDED_ONLY(product(intx, GuaranteedSafepointInterval, 0, \
3010 "Guarantee a safepoint (at least) every so many milliseconds " \
3011 "(0 means none)")) \
3012 \
3013 product(intx, SafepointTimeoutDelay, 10000, \
3014 "Delay in milliseconds for option SafepointTimeout") \
3015 \
3016 product(intx, NmethodSweepFraction, 4, \
3017 "Number of invocations of sweeper to cover all nmethods") \
3018 \
3019 product(intx, NmethodSweepCheckInterval, 5, \
3020 "Compilers wake up every n seconds to possibly sweep nmethods") \
3021 \
3022 notproduct(bool, LogSweeper, false, \
3023 "Keep a ring buffer of sweeper activity") \
3024 \
3025 notproduct(intx, SweeperLogEntries, 1024, \
3026 "Number of records in the ring buffer of sweeper activity") \
3027 \
3028 notproduct(intx, MemProfilingInterval, 500, \
3029 "Time between each invocation of the MemProfiler") \
3030 \
3031 develop(intx, MallocCatchPtr, -1, \
3032 "Hit breakpoint when mallocing/freeing this pointer") \
3033 \
3034 notproduct(intx, AssertRepeat, 1, \
3035 "number of times to evaluate expression in assert " \
3036 "(to estimate overhead); only works with -DUSE_REPEATED_ASSERTS") \
3037 \
3038 notproduct(ccstrlist, SuppressErrorAt, "", \
3039 "List of assertions (file:line) to muzzle") \
3040 \
3041 notproduct(uintx, HandleAllocationLimit, 1024, \
3042 "Threshold for HandleMark allocation when +TraceHandleAllocation "\
3043 "is used") \
3044 \
3045 develop(uintx, TotalHandleAllocationLimit, 1024, \
3046 "Threshold for total handle allocation when " \
3047 "+TraceHandleAllocation is used") \
3048 \
3049 develop(intx, StackPrintLimit, 100, \
3050 "number of stack frames to print in VM-level stack dump") \
3051 \
3052 notproduct(intx, MaxElementPrintSize, 256, \
3053 "maximum number of elements to print") \
3054 \
3055 notproduct(intx, MaxSubklassPrintSize, 4, \
3056 "maximum number of subklasses to print when printing klass") \
3057 \
3058 product(intx, MaxInlineLevel, 9, \
3059 "maximum number of nested calls that are inlined") \
3060 \
3061 product(intx, MaxRecursiveInlineLevel, 1, \
3062 "maximum number of nested recursive calls that are inlined") \
3063 \
3064 product_pd(intx, InlineSmallCode, \
3065 "Only inline already compiled methods if their code size is " \
3066 "less than this") \
3067 \
3068 product(intx, MaxInlineSize, 35, \
3069 "maximum bytecode size of a method to be inlined") \
3070 \
3071 product_pd(intx, FreqInlineSize, \
3072 "maximum bytecode size of a frequent method to be inlined") \
3073 \
3074 product(intx, MaxTrivialSize, 6, \
3075 "maximum bytecode size of a trivial method to be inlined") \
3076 \
3077 product(intx, MinInliningThreshold, 250, \
3078 "min. invocation count a method needs to have to be inlined") \
3079 \
3080 develop(intx, AlignEntryCode, 4, \
3081 "aligns entry code to specified value (in bytes)") \
3082 \
3083 develop(intx, MethodHistogramCutoff, 100, \
3084 "cutoff value for method invoc. histogram (+CountCalls)") \
3085 \
3086 develop(intx, ProfilerNumberOfInterpretedMethods, 25, \
3087 "# of interpreted methods to show in profile") \
3088 \
3089 develop(intx, ProfilerNumberOfCompiledMethods, 25, \
3090 "# of compiled methods to show in profile") \
3091 \
3092 develop(intx, ProfilerNumberOfStubMethods, 25, \
3093 "# of stub methods to show in profile") \
3094 \
3095 develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \
3096 "# of runtime stub nodes to show in profile") \
3097 \
3098 product(intx, ProfileIntervalsTicks, 100, \
3099 "# of ticks between printing of interval profile " \
3100 "(+ProfileIntervals)") \
3101 \
3102 notproduct(intx, ScavengeALotInterval, 1, \
3103 "Interval between which scavenge will occur with +ScavengeALot") \
3104 \
3105 notproduct(intx, FullGCALotInterval, 1, \
3106 "Interval between which full gc will occur with +FullGCALot") \
3107 \
3108 notproduct(intx, FullGCALotStart, 0, \
3109 "For which invocation to start FullGCAlot") \
3110 \
3111 notproduct(intx, FullGCALotDummies, 32*K, \
3112 "Dummy object allocated with +FullGCALot, forcing all objects " \
3113 "to move") \
3114 \
3115 develop(intx, DontYieldALotInterval, 10, \
3116 "Interval between which yields will be dropped (milliseconds)") \
3117 \
3118 develop(intx, MinSleepInterval, 1, \
3119 "Minimum sleep() interval (milliseconds) when " \
3120 "ConvertSleepToYield is off (used for SOLARIS)") \
3121 \
3122 product(intx, EventLogLength, 2000, \
3123 "maximum nof events in event log") \
3124 \
3125 develop(intx, ProfilerPCTickThreshold, 15, \
3126 "Number of ticks in a PC buckets to be a hotspot") \
3127 \
3128 notproduct(intx, DeoptimizeALotInterval, 5, \
3129 "Number of exits until DeoptimizeALot kicks in") \
3130 \
3131 notproduct(intx, ZombieALotInterval, 5, \
3132 "Number of exits until ZombieALot kicks in") \
3133 \
3134 develop(bool, StressNonEntrant, false, \
3135 "Mark nmethods non-entrant at registration") \
3136 \
3137 diagnostic(intx, MallocVerifyInterval, 0, \
3138 "if non-zero, verify C heap after every N calls to " \
3139 "malloc/realloc/free") \
3140 \
3141 diagnostic(intx, MallocVerifyStart, 0, \
3142 "if non-zero, start verifying C heap after Nth call to " \
3143 "malloc/realloc/free") \
3144 \
3145 product(intx, TypeProfileWidth, 2, \
3146 "number of receiver types to record in call/cast profile") \
3147 \
3148 develop(intx, BciProfileWidth, 2, \
3149 "number of return bci's to record in ret profile") \
3150 \
3151 product(intx, PerMethodRecompilationCutoff, 400, \
3152 "After recompiling N times, stay in the interpreter (-1=>'Inf')") \
3153 \
3154 product(intx, PerBytecodeRecompilationCutoff, 200, \
3155 "Per-BCI limit on repeated recompilation (-1=>'Inf')") \
3156 \
3157 product(intx, PerMethodTrapLimit, 100, \
3158 "Limit on traps (of one kind) in a method (includes inlines)") \
3159 \
3160 product(intx, PerBytecodeTrapLimit, 4, \
3161 "Limit on traps (of one kind) at a particular BCI") \
3162 \
3163 develop(intx, FreqCountInvocations, 1, \
3164 "Scaling factor for branch frequencies (deprecated)") \
3165 \
3166 develop(intx, InlineFrequencyRatio, 20, \
3167 "Ratio of call site execution to caller method invocation") \
3168 \
3169 develop_pd(intx, InlineFrequencyCount, \
3170 "Count of call site execution necessary to trigger frequent " \
3171 "inlining") \
3172 \
3173 develop(intx, InlineThrowCount, 50, \
3174 "Force inlining of interpreted methods that throw this often") \
3175 \
3176 develop(intx, InlineThrowMaxSize, 200, \
3177 "Force inlining of throwing methods smaller than this") \
3178 \
3179 product(intx, AliasLevel, 3, \
3180 "0 for no aliasing, 1 for oop/field/static/array split, " \
3181 "2 for class split, 3 for unique instances") \
3182 \
3183 develop(bool, VerifyAliases, false, \
3184 "perform extra checks on the results of alias analysis") \
3185 \
3186 develop(intx, ProfilerNodeSize, 1024, \
3187 "Size in K to allocate for the Profile Nodes of each thread") \
3188 \
3189 develop(intx, V8AtomicOperationUnderLockSpinCount, 50, \
3190 "Number of times to spin wait on a v8 atomic operation lock") \
3191 \
3192 product(intx, ReadSpinIterations, 100, \
3193 "Number of read attempts before a yield (spin inner loop)") \
3194 \
3195 product_pd(intx, PreInflateSpin, \
3196 "Number of times to spin wait before inflation") \
3197 \
3198 product(intx, PreBlockSpin, 10, \
3199 "Number of times to spin in an inflated lock before going to " \
3200 "an OS lock") \
3201 \
3202 /* gc parameters */ \
3203 product(uintx, InitialHeapSize, 0, \
3204 "Initial heap size (in bytes); zero means OldSize + NewSize") \
3205 \
3206 product(uintx, MaxHeapSize, ScaleForWordSize(96*M), \
3207 "Maximum heap size (in bytes)") \
3208 \
3209 product(uintx, OldSize, ScaleForWordSize(4*M), \
3210 "Initial tenured generation size (in bytes)") \
3211 \
3212 product(uintx, NewSize, ScaleForWordSize(1*M), \
3213 "Initial new generation size (in bytes)") \
3214 \
3215 product(uintx, MaxNewSize, max_uintx, \
3216 "Maximum new generation size (in bytes), max_uintx means set " \
3217 "ergonomically") \
3218 \
3219 product(uintx, PretenureSizeThreshold, 0, \
3220 "Maximum size in bytes of objects allocated in DefNew " \
3221 "generation; zero means no maximum") \
3222 \
3223 product(uintx, TLABSize, 0, \
3224 "Starting TLAB size (in bytes); zero means set ergonomically") \
3225 \
3226 product(uintx, MinTLABSize, 2*K, \
3227 "Minimum allowed TLAB size (in bytes)") \
3228 \
3229 product(uintx, TLABAllocationWeight, 35, \
3230 "Allocation averaging weight") \
3231 \
3232 product(uintx, TLABWasteTargetPercent, 1, \
3233 "Percentage of Eden that can be wasted") \
3234 \
3235 product(uintx, TLABRefillWasteFraction, 64, \
3236 "Max TLAB waste at a refill (internal fragmentation)") \
3237 \
3238 product(uintx, TLABWasteIncrement, 4, \
3239 "Increment allowed waste at slow allocation") \
3240 \
3241 product(intx, SurvivorRatio, 8, \
3242 "Ratio of eden/survivor space size") \
3243 \
3244 product(intx, NewRatio, 2, \
3245 "Ratio of new/old generation sizes") \
3246 \
3247 product_pd(uintx, NewSizeThreadIncrease, \
3248 "Additional size added to desired new generation size per " \
3249 "non-daemon thread (in bytes)") \
3250 \
3251 product_pd(uintx, PermSize, \
3252 "Initial size of permanent generation (in bytes)") \
3253 \
3254 product_pd(uintx, MaxPermSize, \
3255 "Maximum size of permanent generation (in bytes)") \
3256 \
3257 product(uintx, MinHeapFreeRatio, 40, \
3258 "Min percentage of heap free after GC to avoid expansion") \
3259 \
3260 product(uintx, MaxHeapFreeRatio, 70, \
3261 "Max percentage of heap free after GC to avoid shrinking") \
3262 \
3263 product(intx, SoftRefLRUPolicyMSPerMB, 1000, \
3264 "Number of milliseconds per MB of free space in the heap") \
3265 \
3266 product(uintx, MinHeapDeltaBytes, ScaleForWordSize(128*K), \
3267 "Min change in heap space due to GC (in bytes)") \
3268 \
3269 product(uintx, MinPermHeapExpansion, ScaleForWordSize(256*K), \
3270 "Min expansion of permanent heap (in bytes)") \
3271 \
3272 product(uintx, MaxPermHeapExpansion, ScaleForWordSize(4*M), \
3273 "Max expansion of permanent heap without full GC (in bytes)") \
3274 \
3275 product(intx, QueuedAllocationWarningCount, 0, \
3276 "Number of times an allocation that queues behind a GC " \
3277 "will retry before printing a warning") \
3278 \
3279 diagnostic(uintx, VerifyGCStartAt, 0, \
3280 "GC invoke count where +VerifyBefore/AfterGC kicks in") \
3281 \
3282 diagnostic(intx, VerifyGCLevel, 0, \
3283 "Generation level at which to start +VerifyBefore/AfterGC") \
3284 \
3285 develop(uintx, ExitAfterGCNum, 0, \
3286 "If non-zero, exit after this GC.") \
3287 \
3288 product(intx, MaxTenuringThreshold, 15, \
3289 "Maximum value for tenuring threshold") \
3290 \
3291 product(intx, InitialTenuringThreshold, 7, \
3292 "Initial value for tenuring threshold") \
3293 \
3294 product(intx, TargetSurvivorRatio, 50, \
3295 "Desired percentage of survivor space used after scavenge") \
3296 \
3297 product(uintx, MarkSweepDeadRatio, 5, \
3298 "Percentage (0-100) of the old gen allowed as dead wood." \
3299 "Serial mark sweep treats this as both the min and max value." \
3300 "CMS uses this value only if it falls back to mark sweep." \
3301 "Par compact uses a variable scale based on the density of the" \
3302 "generation and treats this as the max value when the heap is" \
3303 "either completely full or completely empty. Par compact also" \
3304 "has a smaller default value; see arguments.cpp.") \
3305 \
3306 product(uintx, PermMarkSweepDeadRatio, 20, \
3307 "Percentage (0-100) of the perm gen allowed as dead wood." \
3308 "See MarkSweepDeadRatio for collector-specific comments.") \
3309 \
3310 product(intx, MarkSweepAlwaysCompactCount, 4, \
3311 "How often should we fully compact the heap (ignoring the dead " \
3312 "space parameters)") \
3313 \
3314 product(intx, PrintCMSStatistics, 0, \
3315 "Statistics for CMS") \
3316 \
3317 product(bool, PrintCMSInitiationStatistics, false, \
3318 "Statistics for initiating a CMS collection") \
3319 \
3320 product(intx, PrintFLSStatistics, 0, \
3321 "Statistics for CMS' FreeListSpace") \
3322 \
3323 product(intx, PrintFLSCensus, 0, \
3324 "Census for CMS' FreeListSpace") \
3325 \
3326 develop(uintx, GCExpandToAllocateDelayMillis, 0, \
3327 "Delay in ms between expansion and allocation") \
3328 \
3329 product(intx, DeferThrSuspendLoopCount, 4000, \
3330 "(Unstable) Number of times to iterate in safepoint loop " \
3331 " before blocking VM threads ") \
3332 \
3333 product(intx, DeferPollingPageLoopCount, -1, \
3334 "(Unsafe,Unstable) Number of iterations in safepoint loop " \
3335 "before changing safepoint polling page to RO ") \
3336 \
3337 product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \
3338 \
3339 product(bool, PSChunkLargeArrays, true, \
3340 "true: process large arrays in chunks") \
3341 \
3342 product(uintx, GCDrainStackTargetSize, 64, \
3343 "how many entries we'll try to leave on the stack during " \
3344 "parallel GC") \
3345 \
3346 /* stack parameters */ \
3347 product_pd(intx, StackYellowPages, \
3348 "Number of yellow zone (recoverable overflows) pages") \
3349 \
3350 product_pd(intx, StackRedPages, \
3351 "Number of red zone (unrecoverable overflows) pages") \
3352 \
3353 product_pd(intx, StackShadowPages, \
3354 "Number of shadow zone (for overflow checking) pages" \
3355 " this should exceed the depth of the VM and native call stack") \
3356 \
3357 product_pd(intx, ThreadStackSize, \
3358 "Thread Stack Size (in Kbytes)") \
3359 \
3360 product_pd(intx, VMThreadStackSize, \
3361 "Non-Java Thread Stack Size (in Kbytes)") \
3362 \
3363 product_pd(intx, CompilerThreadStackSize, \
3364 "Compiler Thread Stack Size (in Kbytes)") \
3365 \
3366 develop_pd(uintx, JVMInvokeMethodSlack, \
3367 "Stack space (bytes) required for JVM_InvokeMethod to complete") \
3368 \
3369 product(uintx, ThreadSafetyMargin, 50*M, \
3370 "Thread safety margin is used on fixed-stack LinuxThreads (on " \
3371 "Linux/x86 only) to prevent heap-stack collision. Set to 0 to " \
3372 "disable this feature") \
3373 \
3374 /* code cache parameters */ \
3375 develop(uintx, CodeCacheSegmentSize, 64, \
3376 "Code cache segment size (in bytes) - smallest unit of " \
3377 "allocation") \
3378 \
3379 develop_pd(intx, CodeEntryAlignment, \
3380 "Code entry alignment for generated code (in bytes)") \
3381 \
3382 product_pd(intx, OptoLoopAlignment, \
3383 "Align inner loops to zero relative to this modulus") \
3384 \
3385 product_pd(uintx, InitialCodeCacheSize, \
3386 "Initial code cache size (in bytes)") \
3387 \
3388 product_pd(uintx, ReservedCodeCacheSize, \
3389 "Reserved code cache size (in bytes) - maximum code cache size") \
3390 \
3391 product(uintx, CodeCacheMinimumFreeSpace, 500*K, \
3392 "When less than X space left, we stop compiling.") \
3393 \
3394 product_pd(uintx, CodeCacheExpansionSize, \
3395 "Code cache expansion size (in bytes)") \
3396 \
3397 develop_pd(uintx, CodeCacheMinBlockLength, \
3398 "Minimum number of segments in a code cache block.") \
3399 \
3400 notproduct(bool, ExitOnFullCodeCache, false, \
3401 "Exit the VM if we fill the code cache.") \
3402 \
3403 product(bool, UseCodeCacheFlushing, true, \
3404 "Attempt to clean the code cache before shutting off compiler") \
3405 \
3406 product(intx, MinCodeCacheFlushingInterval, 30, \
3407 "Min number of seconds between code cache cleaning sessions") \
3408 \
3409 product(uintx, CodeCacheFlushingMinimumFreeSpace, 1500*K, \
3410 "When less than X space left, start code cache cleaning") \
3411 \
3412 /* interpreter debugging */ \
3413 develop(intx, BinarySwitchThreshold, 5, \
3414 "Minimal number of lookupswitch entries for rewriting to binary " \
3415 "switch") \
3416 \
3417 develop(intx, StopInterpreterAt, 0, \
3418 "Stops interpreter execution at specified bytecode number") \
3419 \
3420 develop(intx, TraceBytecodesAt, 0, \
3421 "Traces bytecodes starting with specified bytecode number") \
3422 \
3423 /* compiler interface */ \
3424 develop(intx, CIStart, 0, \
3425 "the id of the first compilation to permit") \
3426 \
3427 develop(intx, CIStop, -1, \
3428 "the id of the last compilation to permit") \
3429 \
3430 develop(intx, CIStartOSR, 0, \
3431 "the id of the first osr compilation to permit " \
3432 "(CICountOSR must be on)") \
3433 \
3434 develop(intx, CIStopOSR, -1, \
3435 "the id of the last osr compilation to permit " \
3436 "(CICountOSR must be on)") \
3437 \
3438 develop(intx, CIBreakAtOSR, -1, \
3439 "id of osr compilation to break at") \
3440 \
3441 develop(intx, CIBreakAt, -1, \
3442 "id of compilation to break at") \
3443 \
3444 product(ccstrlist, CompileOnly, "", \
3445 "List of methods (pkg/class.name) to restrict compilation to") \
3446 \
3447 product(ccstr, CompileCommandFile, NULL, \
3448 "Read compiler commands from this file [.hotspot_compiler]") \
3449 \
3450 product(ccstrlist, CompileCommand, "", \
3451 "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \
3452 \
3453 product(bool, CICompilerCountPerCPU, false, \
3454 "1 compiler thread for log(N CPUs)") \
3455 \
3456 develop(intx, CIFireOOMAt, -1, \
3457 "Fire OutOfMemoryErrors throughout CI for testing the compiler " \
3458 "(non-negative value throws OOM after this many CI accesses " \
3459 "in each compile)") \
3460 \
3461 develop(intx, CIFireOOMAtDelay, -1, \
3462 "Wait for this many CI accesses to occur in all compiles before " \
3463 "beginning to throw OutOfMemoryErrors in each compile") \
3464 \
3465 notproduct(bool, CIObjectFactoryVerify, false, \
3466 "enable potentially expensive verification in ciObjectFactory") \
3467 \
3468 /* Priorities */ \
3469 product_pd(bool, UseThreadPriorities, "Use native thread priorities") \
3470 \
3471 product(intx, ThreadPriorityPolicy, 0, \
3472 "0 : Normal. "\
3473 " VM chooses priorities that are appropriate for normal "\
3474 " applications. On Solaris NORM_PRIORITY and above are mapped "\
3475 " to normal native priority. Java priorities below NORM_PRIORITY"\
3476 " map to lower native priority values. On Windows applications"\
3477 " are allowed to use higher native priorities. However, with "\
3478 " ThreadPriorityPolicy=0, VM will not use the highest possible"\
3479 " native priority, THREAD_PRIORITY_TIME_CRITICAL, as it may "\
3480 " interfere with system threads. On Linux thread priorities "\
3481 " are ignored because the OS does not support static priority "\
3482 " in SCHED_OTHER scheduling class which is the only choice for"\
3483 " non-root, non-realtime applications. "\
3484 "1 : Aggressive. "\
3485 " Java thread priorities map over to the entire range of "\
3486 " native thread priorities. Higher Java thread priorities map "\
3487 " to higher native thread priorities. This policy should be "\
3488 " used with care, as sometimes it can cause performance "\
3489 " degradation in the application and/or the entire system. On "\
3490 " Linux this policy requires root privilege.") \
3491 \
3492 product(bool, ThreadPriorityVerbose, false, \
3493 "Print priority changes") \
3494 \
3495 product(intx, DefaultThreadPriority, -1, \
3496 "The native priority at which threads run if not elsewhere " \
3497 "specified (-1 means no change)") \
3498 \
3499 product(intx, CompilerThreadPriority, -1, \
3500 "The native priority at which compiler threads should run " \
3501 "(-1 means no change)") \
3502 \
3503 product(intx, VMThreadPriority, -1, \
3504 "The native priority at which the VM thread should run " \
3505 "(-1 means no change)") \
3506 \
3507 product(bool, CompilerThreadHintNoPreempt, true, \
3508 "(Solaris only) Give compiler threads an extra quanta") \
3509 \
3510 product(bool, VMThreadHintNoPreempt, false, \
3511 "(Solaris only) Give VM thread an extra quanta") \
3512 \
3513 product(intx, JavaPriority1_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3514 product(intx, JavaPriority2_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3515 product(intx, JavaPriority3_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3516 product(intx, JavaPriority4_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3517 product(intx, JavaPriority5_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3518 product(intx, JavaPriority6_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3519 product(intx, JavaPriority7_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3520 product(intx, JavaPriority8_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3521 product(intx, JavaPriority9_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3522 product(intx, JavaPriority10_To_OSPriority,-1, "Map Java priorities to OS priorities") \
3523 \
3524 experimental(bool, UseCriticalJavaThreadPriority, false, \
3525 "Java thread priority 10 maps to critical scheduling priority") \
3526 \
3527 experimental(bool, UseCriticalCompilerThreadPriority, false, \
3528 "Compiler thread(s) run at critical scheduling priority") \
3529 \
3530 experimental(bool, UseCriticalCMSThreadPriority, false, \
3531 "ConcurrentMarkSweep thread runs at critical scheduling priority")\
3532 \
3533 /* compiler debugging */ \
3534 notproduct(intx, CompileTheWorldStartAt, 1, \
3535 "First class to consider when using +CompileTheWorld") \
3536 \
3537 notproduct(intx, CompileTheWorldStopAt, max_jint, \
3538 "Last class to consider when using +CompileTheWorld") \
3539 \
3540 develop(intx, NewCodeParameter, 0, \
3541 "Testing Only: Create a dedicated integer parameter before " \
3542 "putback") \
3543 \
3544 /* new oopmap storage allocation */ \
3545 develop(intx, MinOopMapAllocation, 8, \
3546 "Minimum number of OopMap entries in an OopMapSet") \
3547 \
3548 /* Background Compilation */ \
3549 develop(intx, LongCompileThreshold, 50, \
3550 "Used with +TraceLongCompiles") \
3551 \
3552 product(intx, StarvationMonitorInterval, 200, \
3553 "Pause between each check in ms") \
3554 \
3555 /* recompilation */ \
3556 product_pd(intx, CompileThreshold, \
3557 "number of interpreted method invocations before (re-)compiling") \
3558 \
3559 product_pd(intx, BackEdgeThreshold, \
3560 "Interpreter Back edge threshold at which an OSR compilation is invoked")\
3561 \
3562 product(intx, Tier0InvokeNotifyFreqLog, 7, \
3563 "Interpreter (tier 0) invocation notification frequency.") \
3564 \
3565 product(intx, Tier2InvokeNotifyFreqLog, 11, \
3566 "C1 without MDO (tier 2) invocation notification frequency.") \
3567 \
3568 product(intx, Tier3InvokeNotifyFreqLog, 10, \
3569 "C1 with MDO profiling (tier 3) invocation notification " \
3570 "frequency.") \
3571 \
3572 product(intx, Tier23InlineeNotifyFreqLog, 20, \
3573 "Inlinee invocation (tiers 2 and 3) notification frequency") \
3574 \
3575 product(intx, Tier0BackedgeNotifyFreqLog, 10, \
3576 "Interpreter (tier 0) invocation notification frequency.") \
3577 \
3578 product(intx, Tier2BackedgeNotifyFreqLog, 14, \
3579 "C1 without MDO (tier 2) invocation notification frequency.") \
3580 \
3581 product(intx, Tier3BackedgeNotifyFreqLog, 13, \
3582 "C1 with MDO profiling (tier 3) invocation notification " \
3583 "frequency.") \
3584 \
3585 product(intx, Tier2CompileThreshold, 0, \
3586 "threshold at which tier 2 compilation is invoked") \
3587 \
3588 product(intx, Tier2BackEdgeThreshold, 0, \
3589 "Back edge threshold at which tier 2 compilation is invoked") \
3590 \
3591 product(intx, Tier3InvocationThreshold, 200, \
3592 "Compile if number of method invocations crosses this " \
3593 "threshold") \
3594 \
3595 product(intx, Tier3MinInvocationThreshold, 100, \
3596 "Minimum invocation to compile at tier 3") \
3597 \
3598 product(intx, Tier3CompileThreshold, 2000, \
3599 "Threshold at which tier 3 compilation is invoked (invocation " \
3600 "minimum must be satisfied.") \
3601 \
3602 product(intx, Tier3BackEdgeThreshold, 60000, \
3603 "Back edge threshold at which tier 3 OSR compilation is invoked") \
3604 \
3605 product(intx, Tier4InvocationThreshold, 5000, \
3606 "Compile if number of method invocations crosses this " \
3607 "threshold") \
3608 \
3609 product(intx, Tier4MinInvocationThreshold, 600, \
3610 "Minimum invocation to compile at tier 4") \
3611 \
3612 product(intx, Tier4CompileThreshold, 15000, \
3613 "Threshold at which tier 4 compilation is invoked (invocation " \
3614 "minimum must be satisfied.") \
3615 \
3616 product(intx, Tier4BackEdgeThreshold, 40000, \
3617 "Back edge threshold at which tier 4 OSR compilation is invoked") \
3618 \
3619 product(intx, Tier3DelayOn, 5, \
3620 "If C2 queue size grows over this amount per compiler thread " \
3621 "stop compiling at tier 3 and start compiling at tier 2") \
3622 \
3623 product(intx, Tier3DelayOff, 2, \
3624 "If C2 queue size is less than this amount per compiler thread " \
3625 "allow methods compiled at tier 2 transition to tier 3") \
3626 \
3627 product(intx, Tier3LoadFeedback, 5, \
3628 "Tier 3 thresholds will increase twofold when C1 queue size " \
3629 "reaches this amount per compiler thread") \
3630 \
3631 product(intx, Tier4LoadFeedback, 3, \
3632 "Tier 4 thresholds will increase twofold when C2 queue size " \
3633 "reaches this amount per compiler thread") \
3634 \
3635 product(intx, TieredCompileTaskTimeout, 50, \
3636 "Kill compile task if method was not used within " \
3637 "given timeout in milliseconds") \
3638 \
3639 product(intx, TieredStopAtLevel, 4, \
3640 "Stop at given compilation level") \
3641 \
3642 product(intx, Tier0ProfilingStartPercentage, 200, \
3643 "Start profiling in interpreter if the counters exceed tier 3" \
3644 "thresholds by the specified percentage") \
3645 \
3646 product(intx, TieredRateUpdateMinTime, 1, \
3647 "Minimum rate sampling interval (in milliseconds)") \
3648 \
3649 product(intx, TieredRateUpdateMaxTime, 25, \
3650 "Maximum rate sampling interval (in milliseconds)") \
3651 \
3652 product_pd(bool, TieredCompilation, \
3653 "Enable tiered compilation") \
3654 \
3655 product(bool, PrintTieredEvents, false, \
3656 "Print tiered events notifications") \
3657 \
3658 product(bool, StressTieredRuntime, false, \
3659 "Alternate client and server compiler on compile requests") \
3660 \
3661 product_pd(intx, OnStackReplacePercentage, \
3662 "NON_TIERED number of method invocations/branches (expressed as %"\
3663 "of CompileThreshold) before (re-)compiling OSR code") \
3664 \
3665 product(intx, InterpreterProfilePercentage, 33, \
3666 "NON_TIERED number of method invocations/branches (expressed as %"\
3667 "of CompileThreshold) before profiling in the interpreter") \
3668 \
3669 develop(intx, MaxRecompilationSearchLength, 10, \
3670 "max. # frames to inspect searching for recompilee") \
3671 \
3672 develop(intx, MaxInterpretedSearchLength, 3, \
3673 "max. # interp. frames to skip when searching for recompilee") \
3674 \
3675 develop(intx, DesiredMethodLimit, 8000, \
3676 "desired max. method size (in bytecodes) after inlining") \
3677 \
3678 develop(intx, HugeMethodLimit, 8000, \
3679 "don't compile methods larger than this if " \
3680 "+DontCompileHugeMethods") \
3681 \
3682 /* New JDK 1.4 reflection implementation */ \
3683 \
3684 develop(bool, UseNewReflection, true, \
3685 "Temporary flag for transition to reflection based on dynamic " \
3686 "bytecode generation in 1.4; can no longer be turned off in 1.4 " \
3687 "JDK, and is unneeded in 1.3 JDK, but marks most places VM " \
3688 "changes were needed") \
3689 \
3690 develop(bool, VerifyReflectionBytecodes, false, \
3691 "Force verification of 1.4 reflection bytecodes. Does not work " \
3692 "in situations like that described in 4486457 or for " \
3693 "constructors generated for serialization, so can not be enabled "\
3694 "in product.") \
3695 \
3696 product(bool, ReflectionWrapResolutionErrors, true, \
3697 "Temporary flag for transition to AbstractMethodError wrapped " \
3698 "in InvocationTargetException. See 6531596") \
3699 \
3700 \
3701 develop(intx, FastSuperclassLimit, 8, \
3702 "Depth of hardwired instanceof accelerator array") \
3703 \
3704 /* Properties for Java libraries */ \
3705 \
3706 product(intx, MaxDirectMemorySize, -1, \
3707 "Maximum total size of NIO direct-buffer allocations") \
3708 \
3709 /* temporary developer defined flags */ \
3710 \
3711 diagnostic(bool, UseNewCode, false, \
3712 "Testing Only: Use the new version while testing") \
3713 \
3714 diagnostic(bool, UseNewCode2, false, \
3715 "Testing Only: Use the new version while testing") \
3716 \
3717 diagnostic(bool, UseNewCode3, false, \
3718 "Testing Only: Use the new version while testing") \
3719 \
3720 /* flags for performance data collection */ \
3721 \
3722 product(bool, UsePerfData, falseInEmbedded, \
3723 "Flag to disable jvmstat instrumentation for performance testing" \
3724 "and problem isolation purposes.") \
3725 \
3726 product(bool, PerfDataSaveToFile, false, \
3727 "Save PerfData memory to hsperfdata_<pid> file on exit") \
3728 \
3729 product(ccstr, PerfDataSaveFile, NULL, \
3730 "Save PerfData memory to the specified absolute pathname," \
3731 "%p in the file name if present will be replaced by pid") \
3732 \
3733 product(intx, PerfDataSamplingInterval, 50 /*ms*/, \
3734 "Data sampling interval in milliseconds") \
3735 \
3736 develop(bool, PerfTraceDataCreation, false, \
3737 "Trace creation of Performance Data Entries") \
3738 \
3739 develop(bool, PerfTraceMemOps, false, \
3740 "Trace PerfMemory create/attach/detach calls") \
3741 \
3742 product(bool, PerfDisableSharedMem, false, \
3743 "Store performance data in standard memory") \
3744 \
3745 product(intx, PerfDataMemorySize, 32*K, \
3746 "Size of performance data memory region. Will be rounded " \
3747 "up to a multiple of the native os page size.") \
3748 \
3749 product(intx, PerfMaxStringConstLength, 1024, \
3750 "Maximum PerfStringConstant string length before truncation") \
3751 \
3752 product(bool, PerfAllowAtExitRegistration, false, \
3753 "Allow registration of atexit() methods") \
3754 \
3755 product(bool, PerfBypassFileSystemCheck, false, \
3756 "Bypass Win32 file system criteria checks (Windows Only)") \
3757 \
3758 product(intx, UnguardOnExecutionViolation, 0, \
3759 "Unguard page and retry on no-execute fault (Win32 only)" \
3760 "0=off, 1=conservative, 2=aggressive") \
3761 \
3762 /* Serviceability Support */ \
3763 \
3764 product(bool, ManagementServer, false, \
3765 "Create JMX Management Server") \
3766 \
3767 product(bool, DisableAttachMechanism, false, \
3768 "Disable mechanism that allows tools to attach to this VM") \
3769 \
3770 product(bool, StartAttachListener, false, \
3771 "Always start Attach Listener at VM startup") \
3772 \
3773 manageable(bool, PrintConcurrentLocks, false, \
3774 "Print java.util.concurrent locks in thread dump") \
3775 \
3776 product(bool, TransmitErrorReport, false, \
3777 "Enable error report transmission on erroneous termination") \
3778 \
3779 product(ccstr, ErrorReportServer, NULL, \
3780 "Override built-in error report server address") \
3781 \
3782 /* Shared spaces */ \
3783 \
3784 product(bool, UseSharedSpaces, true, \
3785 "Use shared spaces in the permanent generation") \
3786 \
3787 product(bool, RequireSharedSpaces, false, \
3788 "Require shared spaces in the permanent generation") \
3789 \
3790 product(bool, DumpSharedSpaces, false, \
3791 "Special mode: JVM reads a class list, loads classes, builds " \
3792 "shared spaces, and dumps the shared spaces to a file to be " \
3793 "used in future JVM runs.") \
3794 \
3795 product(bool, PrintSharedSpaces, false, \
3796 "Print usage of shared spaces") \
3797 \
3798 product(uintx, SharedDummyBlockSize, 512*M, \
3799 "Size of dummy block used to shift heap addresses (in bytes)") \
3800 \
3801 product(uintx, SharedReadWriteSize, NOT_LP64(12*M) LP64_ONLY(13*M), \
3802 "Size of read-write space in permanent generation (in bytes)") \
3803 \
3804 product(uintx, SharedReadOnlySize, 10*M, \
3805 "Size of read-only space in permanent generation (in bytes)") \
3806 \
3807 product(uintx, SharedMiscDataSize, NOT_LP64(4*M) LP64_ONLY(5*M), \
3808 "Size of the shared data area adjacent to the heap (in bytes)") \
3809 \
3810 product(uintx, SharedMiscCodeSize, 4*M, \
3811 "Size of the shared code area adjacent to the heap (in bytes)") \
3812 \
3813 diagnostic(bool, SharedOptimizeColdStart, true, \
3814 "At dump time, order shared objects to achieve better " \
3815 "cold startup time.") \
3816 \
3817 develop(intx, SharedOptimizeColdStartPolicy, 2, \
3818 "Reordering policy for SharedOptimizeColdStart " \
3819 "0=favor classload-time locality, 1=balanced, " \
3820 "2=favor runtime locality") \
3821 \
3822 diagnostic(bool, SharedSkipVerify, false, \
3823 "Skip assert() and verify() which page-in unwanted shared " \
3824 "objects. ") \
3825 \
3826 diagnostic(bool, EnableInvokeDynamic, true, \
3827 "support JSR 292 (method handles, invokedynamic, " \
3828 "anonymous classes") \
3829 \
3830 product(bool, AnonymousClasses, false, \
3831 "support sun.misc.Unsafe.defineAnonymousClass (deprecated)") \
3832 \
3833 experimental(bool, EnableMethodHandles, false, \
3834 "support method handles (deprecated)") \
3835 \
3836 diagnostic(intx, MethodHandlePushLimit, 3, \
3837 "number of additional stack slots a method handle may push") \
3838 \
3839 diagnostic(bool, PrintMethodHandleStubs, false, \
3840 "Print generated stub code for method handles") \
3841 \
3842 develop(bool, TraceMethodHandles, false, \
3843 "trace internal method handle operations") \
3844 \
3845 diagnostic(bool, VerifyMethodHandles, trueInDebug, \
3846 "perform extra checks when constructing method handles") \
3847 \
3848 diagnostic(bool, OptimizeMethodHandles, true, \
3849 "when constructing method handles, try to improve them") \
3850 \
3851 develop(bool, StressMethodHandleWalk, false, \
3852 "Process all method handles with MethodHandleWalk") \
3853 \
3854 experimental(bool, TrustFinalNonStaticFields, false, \
3855 "trust final non-static declarations for constant folding") \
3856 \
3857 experimental(bool, AllowInvokeGeneric, false, \
3858 "accept MethodHandle.invoke and MethodHandle.invokeGeneric " \
3859 "as equivalent methods") \
3860 \
3861 develop(bool, TraceInvokeDynamic, false, \
3862 "trace internal invoke dynamic operations") \
3863 \
3864 diagnostic(bool, PauseAtStartup, false, \
3865 "Causes the VM to pause at startup time and wait for the pause " \
3866 "file to be removed (default: ./vm.paused.<pid>)") \
3867 \
3868 diagnostic(ccstr, PauseAtStartupFile, NULL, \
3869 "The file to create and for whose removal to await when pausing " \
3870 "at startup. (default: ./vm.paused.<pid>)") \
3871 \
3872 diagnostic(bool, PauseAtExit, false, \
3873 "Pause and wait for keypress on exit if a debugger is attached") \
3874 \
3875 product(bool, ExtendedDTraceProbes, false, \
3876 "Enable performance-impacting dtrace probes") \
3877 \
3878 product(bool, DTraceMethodProbes, false, \
3879 "Enable dtrace probes for method-entry and method-exit") \
3880 \
3881 product(bool, DTraceAllocProbes, false, \
3882 "Enable dtrace probes for object allocation") \
3883 \
3884 product(bool, DTraceMonitorProbes, false, \
3885 "Enable dtrace probes for monitor events") \
3886 \
3887 product(bool, RelaxAccessControlCheck, false, \
3888 "Relax the access control checks in the verifier") \
3889 \
3890 diagnostic(bool, PrintDTraceDOF, false, \
3891 "Print the DTrace DOF passed to the system for JSDT probes") \
3892 \
3893 product(uintx, StringTableSize, 1009, \
3894 "Number of buckets in the interned String table") \
3895 \
3896 product(bool, UseVMInterruptibleIO, false, \
3897 "(Unstable, Solaris-specific) Thread interrupt before or with " \
3898 "EINTR for I/O operations results in OS_INTRPT. The default value"\
3899 " of this flag is true for JDK 6 and earlier")
3900
3901 /*
3902 * Macros for factoring of globals
3903 */
3904
3905 // Interface macros
3906 #define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name;
3907 #define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name;
3908 #define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name;
3909 #define DECLARE_EXPERIMENTAL_FLAG(type, name, value, doc) extern "C" type name;
3910 #define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name;
3911 #define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name;
3912 #ifdef PRODUCT
3913 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) const type name = value;
3914 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) const type name = pd_##name;
3915 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc)
3916 #else
3917 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name;
3918 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name;
3919 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name;
3920 #endif
3921 // Special LP64 flags, product only needed for now.
3922 #ifdef _LP64
3923 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) extern "C" type name;
3924 #else
3925 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) const type name = value;
3926 #endif // _LP64
3927
3928 // Implementation macros
3929 #define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value;
3930 #define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name;
3931 #define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value;
3932 #define MATERIALIZE_EXPERIMENTAL_FLAG(type, name, value, doc) type name = value;
3933 #define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value;
3934 #define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value;
3935 #ifdef PRODUCT
3936 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) /* flag name is constant */
3937 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) /* flag name is constant */
3938 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc)
3939 #else
3940 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value;
3941 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name;
3942 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value;
3943 #endif
3944 #ifdef _LP64
3945 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) type name = value;
3946 #else
3947 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) /* flag is constant */
3948 #endif // _LP64
3949
3950 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)
3951
3952 RUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG)
3953
3954 // Extensions
3955
3956 #include "runtime/globals_ext.hpp"
3957
3958 #endif // SHARE_VM_RUNTIME_GLOBALS_HPP