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src/share/vm/runtime/globals.hpp@0382d2b469b2
src/share/vm/runtime/globals.hpp
Wed, 01 Feb 2012 16:57:08 -0800
- author
- never
- date
- Wed, 01 Feb 2012 16:57:08 -0800
- changeset 3500
- 0382d2b469b2
- parent 3499
- aa3d708d67c4
- child 3502
- 379b22e03c32
- permissions
- -rw-r--r--
7013347: allow crypto functions to be called inline to enhance performance
Reviewed-by: kvn
1 /*
2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 #ifndef SHARE_VM_RUNTIME_GLOBALS_HPP
26 #define SHARE_VM_RUNTIME_GLOBALS_HPP
28 #include "utilities/debug.hpp"
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
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
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);
164 define_pd_global(intx, CompileThreshold, 0);
165 define_pd_global(intx, BackEdgeThreshold, 0);
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
185 #ifdef COMPILER2
186 #define CI_COMPILER_COUNT 2
187 #else
188 #define CI_COMPILER_COUNT 1
189 #endif // COMPILER2
191 #endif // no compilers
194 // string type aliases used only in this file
195 typedef const char* ccstr;
196 typedef const char* ccstrlist; // represents string arguments which accumulate
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 };
209 struct Flag {
210 const char *type;
211 const char *name;
212 void* addr;
214 NOT_PRODUCT(const char *doc;)
216 const char *kind;
217 FlagValueOrigin origin;
219 // points to all Flags static array
220 static Flag *flags;
222 // number of flags
223 static size_t numFlags;
225 static Flag* find_flag(char* name, size_t length);
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; }
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; }
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; }
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; }
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; }
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; }
252 bool is_unlocker() const;
253 bool is_unlocked() const;
254 bool is_writeable() const;
255 bool is_external() const;
257 bool is_unlocker_ext() const;
258 bool is_unlocked_ext() const;
259 bool is_writeable_ext() const;
260 bool is_external_ext() const;
262 void print_on(outputStream* st, bool withComments = false );
263 void print_as_flag(outputStream* st);
264 };
266 // debug flags control various aspects of the VM and are global accessible
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 };
280 class CounterSetting {
281 intx* counter;
282 public:
283 CounterSetting(intx* cnt) { counter = cnt; (*counter)++; }
284 ~CounterSetting() { (*counter)--; }
285 };
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 };
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 };
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); }
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); }
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); }
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); }
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); }
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); }
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);
342 static void printFlags(outputStream* out, bool withComments);
344 static void verify() PRODUCT_RETURN;
345 };
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
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
367 #ifdef JAVASE_EMBEDDED
368 #define falseInEmbedded false
369 #else
370 #define falseInEmbedded true
371 #endif
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
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.
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.
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 diagnostic(bool, UnsyncloadClass, false, \
1056 "Unstable: VM calls loadClass unsynchronized. Custom " \
1057 "class loader must call VM synchronized for findClass " \
1058 "and defineClass.") \
1059 \
1060 product(bool, AlwaysLockClassLoader, false, \
1061 "Require the VM to acquire the class loader lock before calling " \
1062 "loadClass() even for class loaders registering " \
1063 "as parallel capable") \
1064 \
1065 product(bool, AllowParallelDefineClass, false, \
1066 "Allow parallel defineClass requests for class loaders " \
1067 "registering as parallel capable") \
1068 \
1069 product(bool, MustCallLoadClassInternal, false, \
1070 "Call loadClassInternal() rather than loadClass()") \
1071 \
1072 product_pd(bool, DontYieldALot, \
1073 "Throw away obvious excess yield calls (for SOLARIS only)") \
1074 \
1075 product_pd(bool, ConvertSleepToYield, \
1076 "Converts sleep(0) to thread yield " \
1077 "(may be off for SOLARIS to improve GUI)") \
1078 \
1079 product(bool, ConvertYieldToSleep, false, \
1080 "Converts yield to a sleep of MinSleepInterval to simulate Win32 "\
1081 "behavior (SOLARIS only)") \
1082 \
1083 product(bool, UseBoundThreads, true, \
1084 "Bind user level threads to kernel threads (for SOLARIS only)") \
1085 \
1086 develop(bool, UseDetachedThreads, true, \
1087 "Use detached threads that are recycled upon termination " \
1088 "(for SOLARIS only)") \
1089 \
1090 product(bool, UseLWPSynchronization, true, \
1091 "Use LWP-based instead of libthread-based synchronization " \
1092 "(SPARC only)") \
1093 \
1094 product(ccstr, SyncKnobs, NULL, \
1095 "(Unstable) Various monitor synchronization tunables") \
1096 \
1097 product(intx, EmitSync, 0, \
1098 "(Unsafe,Unstable) " \
1099 " Controls emission of inline sync fast-path code") \
1100 \
1101 product(intx, AlwaysInflate, 0, "(Unstable) Force inflation") \
1102 \
1103 product(intx, MonitorBound, 0, "Bound Monitor population") \
1104 \
1105 product(bool, MonitorInUseLists, false, "Track Monitors for Deflation") \
1106 \
1107 product(intx, Atomics, 0, \
1108 "(Unsafe,Unstable) Diagnostic - Controls emission of atomics") \
1109 \
1110 product(intx, FenceInstruction, 0, \
1111 "(Unsafe,Unstable) Experimental") \
1112 \
1113 product(intx, SyncFlags, 0, "(Unsafe,Unstable) Experimental Sync flags" ) \
1114 \
1115 product(intx, SyncVerbose, 0, "(Unstable)" ) \
1116 \
1117 product(intx, ClearFPUAtPark, 0, "(Unsafe,Unstable)" ) \
1118 \
1119 product(intx, hashCode, 0, \
1120 "(Unstable) select hashCode generation algorithm" ) \
1121 \
1122 product(intx, WorkAroundNPTLTimedWaitHang, 1, \
1123 "(Unstable, Linux-specific)" \
1124 " avoid NPTL-FUTEX hang pthread_cond_timedwait" ) \
1125 \
1126 product(bool, FilterSpuriousWakeups, true, \
1127 "Prevent spurious or premature wakeups from object.wait " \
1128 "(Solaris only)") \
1129 \
1130 product(intx, NativeMonitorTimeout, -1, "(Unstable)" ) \
1131 product(intx, NativeMonitorFlags, 0, "(Unstable)" ) \
1132 product(intx, NativeMonitorSpinLimit, 20, "(Unstable)" ) \
1133 \
1134 develop(bool, UsePthreads, false, \
1135 "Use pthread-based instead of libthread-based synchronization " \
1136 "(SPARC only)") \
1137 \
1138 product(bool, AdjustConcurrency, false, \
1139 "call thr_setconcurrency at thread create time to avoid " \
1140 "LWP starvation on MP systems (For Solaris Only)") \
1141 \
1142 develop(bool, UpdateHotSpotCompilerFileOnError, true, \
1143 "Should the system attempt to update the compiler file when " \
1144 "an error occurs?") \
1145 \
1146 product(bool, ReduceSignalUsage, false, \
1147 "Reduce the use of OS signals in Java and/or the VM") \
1148 \
1149 notproduct(bool, ValidateMarkSweep, false, \
1150 "Do extra validation during MarkSweep collection") \
1151 \
1152 notproduct(bool, RecordMarkSweepCompaction, false, \
1153 "Enable GC-to-GC recording and querying of compaction during " \
1154 "MarkSweep") \
1155 \
1156 develop_pd(bool, ShareVtableStubs, \
1157 "Share vtable stubs (smaller code but worse branch prediction") \
1158 \
1159 develop(bool, LoadLineNumberTables, true, \
1160 "Tells whether the class file parser loads line number tables") \
1161 \
1162 develop(bool, LoadLocalVariableTables, true, \
1163 "Tells whether the class file parser loads local variable tables")\
1164 \
1165 develop(bool, LoadLocalVariableTypeTables, true, \
1166 "Tells whether the class file parser loads local variable type tables")\
1167 \
1168 product(bool, AllowUserSignalHandlers, false, \
1169 "Do not complain if the application installs signal handlers " \
1170 "(Solaris & Linux only)") \
1171 \
1172 product(bool, UseSignalChaining, true, \
1173 "Use signal-chaining to invoke signal handlers installed " \
1174 "by the application (Solaris & Linux only)") \
1175 \
1176 product(bool, UseAltSigs, false, \
1177 "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \
1178 "internal signals (Solaris only)") \
1179 \
1180 product(bool, UseSpinning, false, \
1181 "Use spinning in monitor inflation and before entry") \
1182 \
1183 product(bool, PreSpinYield, false, \
1184 "Yield before inner spinning loop") \
1185 \
1186 product(bool, PostSpinYield, true, \
1187 "Yield after inner spinning loop") \
1188 \
1189 product(bool, AllowJNIEnvProxy, false, \
1190 "Allow JNIEnv proxies for jdbx") \
1191 \
1192 product(bool, JNIDetachReleasesMonitors, true, \
1193 "JNI DetachCurrentThread releases monitors owned by thread") \
1194 \
1195 product(bool, RestoreMXCSROnJNICalls, false, \
1196 "Restore MXCSR when returning from JNI calls") \
1197 \
1198 product(bool, CheckJNICalls, false, \
1199 "Verify all arguments to JNI calls") \
1200 \
1201 product(bool, UseFastJNIAccessors, true, \
1202 "Use optimized versions of Get<Primitive>Field") \
1203 \
1204 product(bool, EagerXrunInit, false, \
1205 "Eagerly initialize -Xrun libraries; allows startup profiling, " \
1206 " but not all -Xrun libraries may support the state of the VM at this time") \
1207 \
1208 product(bool, PreserveAllAnnotations, false, \
1209 "Preserve RuntimeInvisibleAnnotations as well as RuntimeVisibleAnnotations") \
1210 \
1211 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \
1212 "Number of OutOfMemoryErrors preallocated with backtrace") \
1213 \
1214 product(bool, LazyBootClassLoader, true, \
1215 "Enable/disable lazy opening of boot class path entries") \
1216 \
1217 diagnostic(bool, UseIncDec, true, \
1218 "Use INC, DEC instructions on x86") \
1219 \
1220 product(bool, UseNewLongLShift, false, \
1221 "Use optimized bitwise shift left") \
1222 \
1223 product(bool, UseStoreImmI16, true, \
1224 "Use store immediate 16-bits value instruction on x86") \
1225 \
1226 product(bool, UseAddressNop, false, \
1227 "Use '0F 1F [addr]' NOP instructions on x86 cpus") \
1228 \
1229 product(bool, UseXmmLoadAndClearUpper, true, \
1230 "Load low part of XMM register and clear upper part") \
1231 \
1232 product(bool, UseXmmRegToRegMoveAll, false, \
1233 "Copy all XMM register bits when moving value between registers") \
1234 \
1235 product(bool, UseXmmI2D, false, \
1236 "Use SSE2 CVTDQ2PD instruction to convert Integer to Double") \
1237 \
1238 product(bool, UseXmmI2F, false, \
1239 "Use SSE2 CVTDQ2PS instruction to convert Integer to Float") \
1240 \
1241 product(bool, UseXMMForArrayCopy, false, \
1242 "Use SSE2 MOVQ instruction for Arraycopy") \
1243 \
1244 product(bool, UseUnalignedLoadStores, false, \
1245 "Use SSE2 MOVDQU instruction for Arraycopy") \
1246 \
1247 product(bool, UseCBCond, false, \
1248 "Use compare and branch instruction on SPARC") \
1249 \
1250 product(intx, FieldsAllocationStyle, 1, \
1251 "0 - type based with oops first, 1 - with oops last, " \
1252 "2 - oops in super and sub classes are together") \
1253 \
1254 product(bool, CompactFields, true, \
1255 "Allocate nonstatic fields in gaps between previous fields") \
1256 \
1257 notproduct(bool, PrintCompactFieldsSavings, false, \
1258 "Print how many words were saved with CompactFields") \
1259 \
1260 product(bool, UseBiasedLocking, true, \
1261 "Enable biased locking in JVM") \
1262 \
1263 product(intx, BiasedLockingStartupDelay, 4000, \
1264 "Number of milliseconds to wait before enabling biased locking") \
1265 \
1266 diagnostic(bool, PrintBiasedLockingStatistics, false, \
1267 "Print statistics of biased locking in JVM") \
1268 \
1269 product(intx, BiasedLockingBulkRebiasThreshold, 20, \
1270 "Threshold of number of revocations per type to try to " \
1271 "rebias all objects in the heap of that type") \
1272 \
1273 product(intx, BiasedLockingBulkRevokeThreshold, 40, \
1274 "Threshold of number of revocations per type to permanently " \
1275 "revoke biases of all objects in the heap of that type") \
1276 \
1277 product(intx, BiasedLockingDecayTime, 25000, \
1278 "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \
1279 "type after previous bulk rebias") \
1280 \
1281 develop(bool, JavaObjectsInPerm, false, \
1282 "controls whether Classes and interned Strings are allocated" \
1283 "in perm. This purely intended to allow debugging issues" \
1284 "in production.") \
1285 \
1286 /* tracing */ \
1287 \
1288 notproduct(bool, TraceRuntimeCalls, false, \
1289 "Trace run-time calls") \
1290 \
1291 develop(bool, TraceJNICalls, false, \
1292 "Trace JNI calls") \
1293 \
1294 notproduct(bool, TraceJVMCalls, false, \
1295 "Trace JVM calls") \
1296 \
1297 product(ccstr, TraceJVMTI, NULL, \
1298 "Trace flags for JVMTI functions and events") \
1299 \
1300 /* This option can change an EMCP method into an obsolete method. */ \
1301 /* This can affect tests that except specific methods to be EMCP. */ \
1302 /* This option should be used with caution. */ \
1303 product(bool, StressLdcRewrite, false, \
1304 "Force ldc -> ldc_w rewrite during RedefineClasses") \
1305 \
1306 product(intx, TraceRedefineClasses, 0, \
1307 "Trace level for JVMTI RedefineClasses") \
1308 \
1309 develop(bool, StressMethodComparator, false, \
1310 "run the MethodComparator on all loaded methods") \
1311 \
1312 /* change to false by default sometime after Mustang */ \
1313 product(bool, VerifyMergedCPBytecodes, true, \
1314 "Verify bytecodes after RedefineClasses constant pool merging") \
1315 \
1316 develop(bool, TraceJNIHandleAllocation, false, \
1317 "Trace allocation/deallocation of JNI handle blocks") \
1318 \
1319 develop(bool, TraceThreadEvents, false, \
1320 "Trace all thread events") \
1321 \
1322 develop(bool, TraceBytecodes, false, \
1323 "Trace bytecode execution") \
1324 \
1325 develop(bool, TraceClassInitialization, false, \
1326 "Trace class initialization") \
1327 \
1328 develop(bool, TraceExceptions, false, \
1329 "Trace exceptions") \
1330 \
1331 develop(bool, TraceICs, false, \
1332 "Trace inline cache changes") \
1333 \
1334 notproduct(bool, TraceInvocationCounterOverflow, false, \
1335 "Trace method invocation counter overflow") \
1336 \
1337 develop(bool, TraceInlineCacheClearing, false, \
1338 "Trace clearing of inline caches in nmethods") \
1339 \
1340 develop(bool, TraceDependencies, false, \
1341 "Trace dependencies") \
1342 \
1343 develop(bool, VerifyDependencies, trueInDebug, \
1344 "Exercise and verify the compilation dependency mechanism") \
1345 \
1346 develop(bool, TraceNewOopMapGeneration, false, \
1347 "Trace OopMapGeneration") \
1348 \
1349 develop(bool, TraceNewOopMapGenerationDetailed, false, \
1350 "Trace OopMapGeneration: print detailed cell states") \
1351 \
1352 develop(bool, TimeOopMap, false, \
1353 "Time calls to GenerateOopMap::compute_map() in sum") \
1354 \
1355 develop(bool, TimeOopMap2, false, \
1356 "Time calls to GenerateOopMap::compute_map() individually") \
1357 \
1358 develop(bool, TraceMonitorMismatch, false, \
1359 "Trace monitor matching failures during OopMapGeneration") \
1360 \
1361 develop(bool, TraceOopMapRewrites, false, \
1362 "Trace rewritting of method oops during oop map generation") \
1363 \
1364 develop(bool, TraceSafepoint, false, \
1365 "Trace safepoint operations") \
1366 \
1367 develop(bool, TraceICBuffer, false, \
1368 "Trace usage of IC buffer") \
1369 \
1370 develop(bool, TraceCompiledIC, false, \
1371 "Trace changes of compiled IC") \
1372 \
1373 notproduct(bool, TraceZapDeadLocals, false, \
1374 "Trace zapping dead locals") \
1375 \
1376 develop(bool, TraceStartupTime, false, \
1377 "Trace setup time") \
1378 \
1379 product(ccstr, HPILibPath, NULL, \
1380 "Specify alternate path to HPI library") \
1381 \
1382 develop(bool, TraceProtectionDomainVerification, false, \
1383 "Trace protection domain verifcation") \
1384 \
1385 develop(bool, TraceClearedExceptions, false, \
1386 "Prints when an exception is forcibly cleared") \
1387 \
1388 product(bool, TraceClassResolution, false, \
1389 "Trace all constant pool resolutions (for debugging)") \
1390 \
1391 product(bool, TraceBiasedLocking, false, \
1392 "Trace biased locking in JVM") \
1393 \
1394 product(bool, TraceMonitorInflation, false, \
1395 "Trace monitor inflation in JVM") \
1396 \
1397 /* assembler */ \
1398 product(bool, Use486InstrsOnly, false, \
1399 "Use 80486 Compliant instruction subset") \
1400 \
1401 /* gc */ \
1402 \
1403 product(bool, UseSerialGC, false, \
1404 "Use the serial garbage collector") \
1405 \
1406 product(bool, UseG1GC, false, \
1407 "Use the Garbage-First garbage collector") \
1408 \
1409 product(bool, UseParallelGC, false, \
1410 "Use the Parallel Scavenge garbage collector") \
1411 \
1412 product(bool, UseParallelOldGC, false, \
1413 "Use the Parallel Old garbage collector") \
1414 \
1415 product(uintx, HeapMaximumCompactionInterval, 20, \
1416 "How often should we maximally compact the heap (not allowing " \
1417 "any dead space)") \
1418 \
1419 product(uintx, HeapFirstMaximumCompactionCount, 3, \
1420 "The collection count for the first maximum compaction") \
1421 \
1422 product(bool, UseMaximumCompactionOnSystemGC, true, \
1423 "In the Parallel Old garbage collector maximum compaction for " \
1424 "a system GC") \
1425 \
1426 product(uintx, ParallelOldDeadWoodLimiterMean, 50, \
1427 "The mean used by the par compact dead wood" \
1428 "limiter (a number between 0-100).") \
1429 \
1430 product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \
1431 "The standard deviation used by the par compact dead wood" \
1432 "limiter (a number between 0-100).") \
1433 \
1434 product(uintx, ParallelGCThreads, 0, \
1435 "Number of parallel threads parallel gc will use") \
1436 \
1437 product(bool, UseDynamicNumberOfGCThreads, false, \
1438 "Dynamically choose the number of parallel threads " \
1439 "parallel gc will use") \
1440 \
1441 diagnostic(bool, ForceDynamicNumberOfGCThreads, false, \
1442 "Force dynamic selection of the number of" \
1443 "parallel threads parallel gc will use to aid debugging") \
1444 \
1445 product(uintx, HeapSizePerGCThread, ScaleForWordSize(64*M), \
1446 "Size of heap (bytes) per GC thread used in calculating the " \
1447 "number of GC threads") \
1448 \
1449 product(bool, TraceDynamicGCThreads, false, \
1450 "Trace the dynamic GC thread usage") \
1451 \
1452 develop(bool, ParallelOldGCSplitALot, false, \
1453 "Provoke splitting (copying data from a young gen space to" \
1454 "multiple destination spaces)") \
1455 \
1456 develop(uintx, ParallelOldGCSplitInterval, 3, \
1457 "How often to provoke splitting a young gen space") \
1458 \
1459 develop(bool, TraceRegionTasksQueuing, false, \
1460 "Trace the queuing of the region tasks") \
1461 \
1462 product(uintx, ConcGCThreads, 0, \
1463 "Number of threads concurrent gc will use") \
1464 \
1465 product(uintx, YoungPLABSize, 4096, \
1466 "Size of young gen promotion labs (in HeapWords)") \
1467 \
1468 product(uintx, OldPLABSize, 1024, \
1469 "Size of old gen promotion labs (in HeapWords)") \
1470 \
1471 product(uintx, GCTaskTimeStampEntries, 200, \
1472 "Number of time stamp entries per gc worker thread") \
1473 \
1474 product(bool, AlwaysTenure, false, \
1475 "Always tenure objects in eden. (ParallelGC only)") \
1476 \
1477 product(bool, NeverTenure, false, \
1478 "Never tenure objects in eden, May tenure on overflow " \
1479 "(ParallelGC only)") \
1480 \
1481 product(bool, ScavengeBeforeFullGC, true, \
1482 "Scavenge youngest generation before each full GC, " \
1483 "used with UseParallelGC") \
1484 \
1485 develop(bool, ScavengeWithObjectsInToSpace, false, \
1486 "Allow scavenges to occur when to_space contains objects.") \
1487 \
1488 product(bool, UseConcMarkSweepGC, false, \
1489 "Use Concurrent Mark-Sweep GC in the old generation") \
1490 \
1491 product(bool, ExplicitGCInvokesConcurrent, false, \
1492 "A System.gc() request invokes a concurrent collection;" \
1493 " (effective only when UseConcMarkSweepGC)") \
1494 \
1495 product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \
1496 "A System.gc() request invokes a concurrent collection and " \
1497 "also unloads classes during such a concurrent gc cycle " \
1498 "(effective only when UseConcMarkSweepGC)") \
1499 \
1500 product(bool, GCLockerInvokesConcurrent, false, \
1501 "The exit of a JNI CS necessitating a scavenge also" \
1502 " kicks off a bkgrd concurrent collection") \
1503 \
1504 product(uintx, GCLockerEdenExpansionPercent, 5, \
1505 "How much the GC can expand the eden by while the GC locker " \
1506 "is active (as a percentage)") \
1507 \
1508 develop(bool, UseCMSAdaptiveFreeLists, true, \
1509 "Use Adaptive Free Lists in the CMS generation") \
1510 \
1511 develop(bool, UseAsyncConcMarkSweepGC, true, \
1512 "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\
1513 \
1514 develop(bool, RotateCMSCollectionTypes, false, \
1515 "Rotate the CMS collections among concurrent and STW") \
1516 \
1517 product(bool, UseCMSBestFit, true, \
1518 "Use CMS best fit allocation strategy") \
1519 \
1520 product(bool, UseCMSCollectionPassing, true, \
1521 "Use passing of collection from background to foreground") \
1522 \
1523 product(bool, UseParNewGC, false, \
1524 "Use parallel threads in the new generation.") \
1525 \
1526 product(bool, ParallelGCVerbose, false, \
1527 "Verbose output for parallel GC.") \
1528 \
1529 product(intx, ParallelGCBufferWastePct, 10, \
1530 "wasted fraction of parallel allocation buffer.") \
1531 \
1532 diagnostic(bool, ParallelGCRetainPLAB, false, \
1533 "Retain parallel allocation buffers across scavenges; " \
1534 " -- disabled because this currently conflicts with " \
1535 " parallel card scanning under certain conditions ") \
1536 \
1537 product(intx, TargetPLABWastePct, 10, \
1538 "target wasted space in last buffer as pct of overall allocation")\
1539 \
1540 product(uintx, PLABWeight, 75, \
1541 "Percentage (0-100) used to weight the current sample when" \
1542 "computing exponentially decaying average for ResizePLAB.") \
1543 \
1544 product(bool, ResizePLAB, true, \
1545 "Dynamically resize (survivor space) promotion labs") \
1546 \
1547 product(bool, PrintPLAB, false, \
1548 "Print (survivor space) promotion labs sizing decisions") \
1549 \
1550 product(intx, ParGCArrayScanChunk, 50, \
1551 "Scan a subset and push remainder, if array is bigger than this") \
1552 \
1553 product(bool, ParGCUseLocalOverflow, false, \
1554 "Instead of a global overflow list, use local overflow stacks") \
1555 \
1556 product(bool, ParGCTrimOverflow, true, \
1557 "Eagerly trim the local overflow lists (when ParGCUseLocalOverflow") \
1558 \
1559 notproduct(bool, ParGCWorkQueueOverflowALot, false, \
1560 "Whether we should simulate work queue overflow in ParNew") \
1561 \
1562 notproduct(uintx, ParGCWorkQueueOverflowInterval, 1000, \
1563 "An `interval' counter that determines how frequently " \
1564 "we simulate overflow; a smaller number increases frequency") \
1565 \
1566 product(uintx, ParGCDesiredObjsFromOverflowList, 20, \
1567 "The desired number of objects to claim from the overflow list") \
1568 \
1569 diagnostic(uintx, ParGCStridesPerThread, 2, \
1570 "The number of strides per worker thread that we divide up the " \
1571 "card table scanning work into") \
1572 \
1573 diagnostic(intx, ParGCCardsPerStrideChunk, 256, \
1574 "The number of cards in each chunk of the parallel chunks used " \
1575 "during card table scanning") \
1576 \
1577 product(uintx, CMSParPromoteBlocksToClaim, 16, \
1578 "Number of blocks to attempt to claim when refilling CMS LAB for "\
1579 "parallel GC.") \
1580 \
1581 product(uintx, OldPLABWeight, 50, \
1582 "Percentage (0-100) used to weight the current sample when" \
1583 "computing exponentially decaying average for resizing CMSParPromoteBlocksToClaim.") \
1584 \
1585 product(bool, ResizeOldPLAB, true, \
1586 "Dynamically resize (old gen) promotion labs") \
1587 \
1588 product(bool, PrintOldPLAB, false, \
1589 "Print (old gen) promotion labs sizing decisions") \
1590 \
1591 product(uintx, CMSOldPLABMin, 16, \
1592 "Min size of CMS gen promotion lab caches per worker per blksize")\
1593 \
1594 product(uintx, CMSOldPLABMax, 1024, \
1595 "Max size of CMS gen promotion lab caches per worker per blksize")\
1596 \
1597 product(uintx, CMSOldPLABNumRefills, 4, \
1598 "Nominal number of refills of CMS gen promotion lab cache" \
1599 " per worker per block size") \
1600 \
1601 product(bool, CMSOldPLABResizeQuicker, false, \
1602 "Whether to react on-the-fly during a scavenge to a sudden" \
1603 " change in block demand rate") \
1604 \
1605 product(uintx, CMSOldPLABToleranceFactor, 4, \
1606 "The tolerance of the phase-change detector for on-the-fly" \
1607 " PLAB resizing during a scavenge") \
1608 \
1609 product(uintx, CMSOldPLABReactivityFactor, 2, \
1610 "The gain in the feedback loop for on-the-fly PLAB resizing" \
1611 " during a scavenge") \
1612 \
1613 product(uintx, CMSOldPLABReactivityCeiling, 10, \
1614 "The clamping of the gain in the feedback loop for on-the-fly" \
1615 " PLAB resizing during a scavenge") \
1616 \
1617 product(bool, AlwaysPreTouch, false, \
1618 "It forces all freshly committed pages to be pre-touched.") \
1619 \
1620 product_pd(intx, CMSYoungGenPerWorker, \
1621 "The maximum size of young gen chosen by default per GC worker " \
1622 "thread available") \
1623 \
1624 product(bool, GCOverheadReporting, false, \
1625 "Enables the GC overhead reporting facility") \
1626 \
1627 product(intx, GCOverheadReportingPeriodMS, 100, \
1628 "Reporting period for conc GC overhead reporting, in ms ") \
1629 \
1630 product(bool, CMSIncrementalMode, false, \
1631 "Whether CMS GC should operate in \"incremental\" mode") \
1632 \
1633 product(uintx, CMSIncrementalDutyCycle, 10, \
1634 "CMS incremental mode duty cycle (a percentage, 0-100). If" \
1635 "CMSIncrementalPacing is enabled, then this is just the initial" \
1636 "value") \
1637 \
1638 product(bool, CMSIncrementalPacing, true, \
1639 "Whether the CMS incremental mode duty cycle should be " \
1640 "automatically adjusted") \
1641 \
1642 product(uintx, CMSIncrementalDutyCycleMin, 0, \
1643 "Lower bound on the duty cycle when CMSIncrementalPacing is " \
1644 "enabled (a percentage, 0-100)") \
1645 \
1646 product(uintx, CMSIncrementalSafetyFactor, 10, \
1647 "Percentage (0-100) used to add conservatism when computing the " \
1648 "duty cycle") \
1649 \
1650 product(uintx, CMSIncrementalOffset, 0, \
1651 "Percentage (0-100) by which the CMS incremental mode duty cycle" \
1652 " is shifted to the right within the period between young GCs") \
1653 \
1654 product(uintx, CMSExpAvgFactor, 50, \
1655 "Percentage (0-100) used to weight the current sample when" \
1656 "computing exponential averages for CMS statistics.") \
1657 \
1658 product(uintx, CMS_FLSWeight, 75, \
1659 "Percentage (0-100) used to weight the current sample when" \
1660 "computing exponentially decating averages for CMS FLS statistics.") \
1661 \
1662 product(uintx, CMS_FLSPadding, 1, \
1663 "The multiple of deviation from mean to use for buffering" \
1664 "against volatility in free list demand.") \
1665 \
1666 product(uintx, FLSCoalescePolicy, 2, \
1667 "CMS: Aggression level for coalescing, increasing from 0 to 4") \
1668 \
1669 product(bool, FLSAlwaysCoalesceLarge, false, \
1670 "CMS: Larger free blocks are always available for coalescing") \
1671 \
1672 product(double, FLSLargestBlockCoalesceProximity, 0.99, \
1673 "CMS: the smaller the percentage the greater the coalition force")\
1674 \
1675 product(double, CMSSmallCoalSurplusPercent, 1.05, \
1676 "CMS: the factor by which to inflate estimated demand of small" \
1677 " block sizes to prevent coalescing with an adjoining block") \
1678 \
1679 product(double, CMSLargeCoalSurplusPercent, 0.95, \
1680 "CMS: the factor by which to inflate estimated demand of large" \
1681 " block sizes to prevent coalescing with an adjoining block") \
1682 \
1683 product(double, CMSSmallSplitSurplusPercent, 1.10, \
1684 "CMS: the factor by which to inflate estimated demand of small" \
1685 " block sizes to prevent splitting to supply demand for smaller" \
1686 " blocks") \
1687 \
1688 product(double, CMSLargeSplitSurplusPercent, 1.00, \
1689 "CMS: the factor by which to inflate estimated demand of large" \
1690 " block sizes to prevent splitting to supply demand for smaller" \
1691 " blocks") \
1692 \
1693 product(bool, CMSExtrapolateSweep, false, \
1694 "CMS: cushion for block demand during sweep") \
1695 \
1696 product(uintx, CMS_SweepWeight, 75, \
1697 "Percentage (0-100) used to weight the current sample when " \
1698 "computing exponentially decaying average for inter-sweep " \
1699 "duration") \
1700 \
1701 product(uintx, CMS_SweepPadding, 1, \
1702 "The multiple of deviation from mean to use for buffering " \
1703 "against volatility in inter-sweep duration.") \
1704 \
1705 product(uintx, CMS_SweepTimerThresholdMillis, 10, \
1706 "Skip block flux-rate sampling for an epoch unless inter-sweep " \
1707 "duration exceeds this threhold in milliseconds") \
1708 \
1709 develop(bool, CMSTraceIncrementalMode, false, \
1710 "Trace CMS incremental mode") \
1711 \
1712 develop(bool, CMSTraceIncrementalPacing, false, \
1713 "Trace CMS incremental mode pacing computation") \
1714 \
1715 develop(bool, CMSTraceThreadState, false, \
1716 "Trace the CMS thread state (enable the trace_state() method)") \
1717 \
1718 product(bool, CMSClassUnloadingEnabled, false, \
1719 "Whether class unloading enabled when using CMS GC") \
1720 \
1721 product(uintx, CMSClassUnloadingMaxInterval, 0, \
1722 "When CMS class unloading is enabled, the maximum CMS cycle count"\
1723 " for which classes may not be unloaded") \
1724 \
1725 product(bool, CMSCompactWhenClearAllSoftRefs, true, \
1726 "Compact when asked to collect CMS gen with clear_all_soft_refs") \
1727 \
1728 product(bool, UseCMSCompactAtFullCollection, true, \
1729 "Use mark sweep compact at full collections") \
1730 \
1731 product(uintx, CMSFullGCsBeforeCompaction, 0, \
1732 "Number of CMS full collection done before compaction if > 0") \
1733 \
1734 develop(intx, CMSDictionaryChoice, 0, \
1735 "Use BinaryTreeDictionary as default in the CMS generation") \
1736 \
1737 product(uintx, CMSIndexedFreeListReplenish, 4, \
1738 "Replenish an indexed free list with this number of chunks") \
1739 \
1740 product(bool, CMSReplenishIntermediate, true, \
1741 "Replenish all intermediate free-list caches") \
1742 \
1743 product(bool, CMSSplitIndexedFreeListBlocks, true, \
1744 "When satisfying batched demand, split blocks from the " \
1745 "IndexedFreeList whose size is a multiple of requested size") \
1746 \
1747 product(bool, CMSLoopWarn, false, \
1748 "Warn in case of excessive CMS looping") \
1749 \
1750 develop(bool, CMSOverflowEarlyRestoration, false, \
1751 "Whether preserved marks should be restored early") \
1752 \
1753 product(uintx, MarkStackSize, NOT_LP64(32*K) LP64_ONLY(4*M), \
1754 "Size of marking stack") \
1755 \
1756 product(uintx, MarkStackSizeMax, NOT_LP64(4*M) LP64_ONLY(512*M), \
1757 "Max size of marking stack") \
1758 \
1759 notproduct(bool, CMSMarkStackOverflowALot, false, \
1760 "Whether we should simulate frequent marking stack / work queue" \
1761 " overflow") \
1762 \
1763 notproduct(uintx, CMSMarkStackOverflowInterval, 1000, \
1764 "An `interval' counter that determines how frequently" \
1765 " we simulate overflow; a smaller number increases frequency") \
1766 \
1767 product(uintx, CMSMaxAbortablePrecleanLoops, 0, \
1768 "(Temporary, subject to experimentation)" \
1769 "Maximum number of abortable preclean iterations, if > 0") \
1770 \
1771 product(intx, CMSMaxAbortablePrecleanTime, 5000, \
1772 "(Temporary, subject to experimentation)" \
1773 "Maximum time in abortable preclean in ms") \
1774 \
1775 product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \
1776 "(Temporary, subject to experimentation)" \
1777 "Nominal minimum work per abortable preclean iteration") \
1778 \
1779 manageable(intx, CMSAbortablePrecleanWaitMillis, 100, \
1780 "(Temporary, subject to experimentation)" \
1781 " Time that we sleep between iterations when not given" \
1782 " enough work per iteration") \
1783 \
1784 product(uintx, CMSRescanMultiple, 32, \
1785 "Size (in cards) of CMS parallel rescan task") \
1786 \
1787 product(uintx, CMSConcMarkMultiple, 32, \
1788 "Size (in cards) of CMS concurrent MT marking task") \
1789 \
1790 product(uintx, CMSRevisitStackSize, 1*M, \
1791 "Size of CMS KlassKlass revisit stack") \
1792 \
1793 product(bool, CMSAbortSemantics, false, \
1794 "Whether abort-on-overflow semantics is implemented") \
1795 \
1796 product(bool, CMSParallelRemarkEnabled, true, \
1797 "Whether parallel remark enabled (only if ParNewGC)") \
1798 \
1799 product(bool, CMSParallelSurvivorRemarkEnabled, true, \
1800 "Whether parallel remark of survivor space" \
1801 " enabled (effective only if CMSParallelRemarkEnabled)") \
1802 \
1803 product(bool, CMSPLABRecordAlways, true, \
1804 "Whether to always record survivor space PLAB bdries" \
1805 " (effective only if CMSParallelSurvivorRemarkEnabled)") \
1806 \
1807 product(bool, CMSConcurrentMTEnabled, true, \
1808 "Whether multi-threaded concurrent work enabled (if ParNewGC)") \
1809 \
1810 product(bool, CMSPermGenPrecleaningEnabled, true, \
1811 "Whether concurrent precleaning enabled in perm gen" \
1812 " (effective only when CMSPrecleaningEnabled is true)") \
1813 \
1814 product(bool, CMSPrecleaningEnabled, true, \
1815 "Whether concurrent precleaning enabled") \
1816 \
1817 product(uintx, CMSPrecleanIter, 3, \
1818 "Maximum number of precleaning iteration passes") \
1819 \
1820 product(uintx, CMSPrecleanNumerator, 2, \
1821 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \
1822 " ratio") \
1823 \
1824 product(uintx, CMSPrecleanDenominator, 3, \
1825 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \
1826 " ratio") \
1827 \
1828 product(bool, CMSPrecleanRefLists1, true, \
1829 "Preclean ref lists during (initial) preclean phase") \
1830 \
1831 product(bool, CMSPrecleanRefLists2, false, \
1832 "Preclean ref lists during abortable preclean phase") \
1833 \
1834 product(bool, CMSPrecleanSurvivors1, false, \
1835 "Preclean survivors during (initial) preclean phase") \
1836 \
1837 product(bool, CMSPrecleanSurvivors2, true, \
1838 "Preclean survivors during abortable preclean phase") \
1839 \
1840 product(uintx, CMSPrecleanThreshold, 1000, \
1841 "Don't re-iterate if #dirty cards less than this") \
1842 \
1843 product(bool, CMSCleanOnEnter, true, \
1844 "Clean-on-enter optimization for reducing number of dirty cards") \
1845 \
1846 product(uintx, CMSRemarkVerifyVariant, 1, \
1847 "Choose variant (1,2) of verification following remark") \
1848 \
1849 product(uintx, CMSScheduleRemarkEdenSizeThreshold, 2*M, \
1850 "If Eden used is below this value, don't try to schedule remark") \
1851 \
1852 product(uintx, CMSScheduleRemarkEdenPenetration, 50, \
1853 "The Eden occupancy % at which to try and schedule remark pause") \
1854 \
1855 product(uintx, CMSScheduleRemarkSamplingRatio, 5, \
1856 "Start sampling Eden top at least before yg occupancy reaches" \
1857 " 1/<ratio> of the size at which we plan to schedule remark") \
1858 \
1859 product(uintx, CMSSamplingGrain, 16*K, \
1860 "The minimum distance between eden samples for CMS (see above)") \
1861 \
1862 product(bool, CMSScavengeBeforeRemark, false, \
1863 "Attempt scavenge before the CMS remark step") \
1864 \
1865 develop(bool, CMSTraceSweeper, false, \
1866 "Trace some actions of the CMS sweeper") \
1867 \
1868 product(uintx, CMSWorkQueueDrainThreshold, 10, \
1869 "Don't drain below this size per parallel worker/thief") \
1870 \
1871 manageable(intx, CMSWaitDuration, 2000, \
1872 "Time in milliseconds that CMS thread waits for young GC") \
1873 \
1874 product(bool, CMSYield, true, \
1875 "Yield between steps of concurrent mark & sweep") \
1876 \
1877 product(uintx, CMSBitMapYieldQuantum, 10*M, \
1878 "Bitmap operations should process at most this many bits" \
1879 "between yields") \
1880 \
1881 product(bool, CMSDumpAtPromotionFailure, false, \
1882 "Dump useful information about the state of the CMS old " \
1883 " generation upon a promotion failure.") \
1884 \
1885 product(bool, CMSPrintChunksInDump, false, \
1886 "In a dump enabled by CMSDumpAtPromotionFailure, include " \
1887 " more detailed information about the free chunks.") \
1888 \
1889 product(bool, CMSPrintObjectsInDump, false, \
1890 "In a dump enabled by CMSDumpAtPromotionFailure, include " \
1891 " more detailed information about the allocated objects.") \
1892 \
1893 diagnostic(bool, FLSVerifyAllHeapReferences, false, \
1894 "Verify that all refs across the FLS boundary " \
1895 " are to valid objects") \
1896 \
1897 diagnostic(bool, FLSVerifyLists, false, \
1898 "Do lots of (expensive) FreeListSpace verification") \
1899 \
1900 diagnostic(bool, FLSVerifyIndexTable, false, \
1901 "Do lots of (expensive) FLS index table verification") \
1902 \
1903 develop(bool, FLSVerifyDictionary, false, \
1904 "Do lots of (expensive) FLS dictionary verification") \
1905 \
1906 develop(bool, VerifyBlockOffsetArray, false, \
1907 "Do (expensive!) block offset array verification") \
1908 \
1909 diagnostic(bool, BlockOffsetArrayUseUnallocatedBlock, false, \
1910 "Maintain _unallocated_block in BlockOffsetArray" \
1911 " (currently applicable only to CMS collector)") \
1912 \
1913 develop(bool, TraceCMSState, false, \
1914 "Trace the state of the CMS collection") \
1915 \
1916 product(intx, RefDiscoveryPolicy, 0, \
1917 "Whether reference-based(0) or referent-based(1)") \
1918 \
1919 product(bool, ParallelRefProcEnabled, false, \
1920 "Enable parallel reference processing whenever possible") \
1921 \
1922 product(bool, ParallelRefProcBalancingEnabled, true, \
1923 "Enable balancing of reference processing queues") \
1924 \
1925 product(intx, CMSTriggerRatio, 80, \
1926 "Percentage of MinHeapFreeRatio in CMS generation that is " \
1927 "allocated before a CMS collection cycle commences") \
1928 \
1929 product(intx, CMSTriggerPermRatio, 80, \
1930 "Percentage of MinHeapFreeRatio in the CMS perm generation that " \
1931 "is allocated before a CMS collection cycle commences, that " \
1932 "also collects the perm generation") \
1933 \
1934 product(uintx, CMSBootstrapOccupancy, 50, \
1935 "Percentage CMS generation occupancy at which to " \
1936 "initiate CMS collection for bootstrapping collection stats") \
1937 \
1938 product(intx, CMSInitiatingOccupancyFraction, -1, \
1939 "Percentage CMS generation occupancy to start a CMS collection " \
1940 "cycle. A negative value means that CMSTriggerRatio is used") \
1941 \
1942 product(uintx, InitiatingHeapOccupancyPercent, 45, \
1943 "Percentage of the (entire) heap occupancy to start a " \
1944 "concurrent GC cycle. It us used by GCs that trigger a " \
1945 "concurrent GC cycle based on the occupancy of the entire heap, " \
1946 "not just one of the generations (e.g., G1). A value of 0 " \
1947 "denotes 'do constant GC cycles'.") \
1948 \
1949 product(intx, CMSInitiatingPermOccupancyFraction, -1, \
1950 "Percentage CMS perm generation occupancy to start a " \
1951 "CMScollection cycle. A negative value means that " \
1952 "CMSTriggerPermRatio is used") \
1953 \
1954 product(bool, UseCMSInitiatingOccupancyOnly, false, \
1955 "Only use occupancy as a crierion for starting a CMS collection") \
1956 \
1957 product(intx, CMSIsTooFullPercentage, 98, \
1958 "An absolute ceiling above which CMS will always consider the " \
1959 "perm gen ripe for collection") \
1960 \
1961 develop(bool, CMSTestInFreeList, false, \
1962 "Check if the coalesced range is already in the " \
1963 "free lists as claimed") \
1964 \
1965 notproduct(bool, CMSVerifyReturnedBytes, false, \
1966 "Check that all the garbage collected was returned to the " \
1967 "free lists.") \
1968 \
1969 notproduct(bool, ScavengeALot, false, \
1970 "Force scavenge at every Nth exit from the runtime system " \
1971 "(N=ScavengeALotInterval)") \
1972 \
1973 develop(bool, FullGCALot, false, \
1974 "Force full gc at every Nth exit from the runtime system " \
1975 "(N=FullGCALotInterval)") \
1976 \
1977 notproduct(bool, GCALotAtAllSafepoints, false, \
1978 "Enforce ScavengeALot/GCALot at all potential safepoints") \
1979 \
1980 product(bool, PrintPromotionFailure, false, \
1981 "Print additional diagnostic information following " \
1982 " promotion failure") \
1983 \
1984 notproduct(bool, PromotionFailureALot, false, \
1985 "Use promotion failure handling on every youngest generation " \
1986 "collection") \
1987 \
1988 develop(uintx, PromotionFailureALotCount, 1000, \
1989 "Number of promotion failures occurring at ParGCAllocBuffer" \
1990 "refill attempts (ParNew) or promotion attempts " \
1991 "(other young collectors) ") \
1992 \
1993 develop(uintx, PromotionFailureALotInterval, 5, \
1994 "Total collections between promotion failures alot") \
1995 \
1996 experimental(intx, WorkStealingSleepMillis, 1, \
1997 "Sleep time when sleep is used for yields") \
1998 \
1999 experimental(uintx, WorkStealingYieldsBeforeSleep, 5000, \
2000 "Number of yields before a sleep is done during workstealing") \
2001 \
2002 experimental(uintx, WorkStealingHardSpins, 4096, \
2003 "Number of iterations in a spin loop between checks on " \
2004 "time out of hard spin") \
2005 \
2006 experimental(uintx, WorkStealingSpinToYieldRatio, 10, \
2007 "Ratio of hard spins to calls to yield") \
2008 \
2009 product(uintx, PreserveMarkStackSize, 1024, \
2010 "Size for stack used in promotion failure handling") \
2011 \
2012 develop(uintx, ObjArrayMarkingStride, 512, \
2013 "Number of ObjArray elements to push onto the marking stack" \
2014 "before pushing a continuation entry") \
2015 \
2016 notproduct(bool, ExecuteInternalVMTests, false, \
2017 "Enable execution of internal VM tests.") \
2018 \
2019 product_pd(bool, UseTLAB, "Use thread-local object allocation") \
2020 \
2021 product_pd(bool, ResizeTLAB, \
2022 "Dynamically resize tlab size for threads") \
2023 \
2024 product(bool, ZeroTLAB, false, \
2025 "Zero out the newly created TLAB") \
2026 \
2027 product(bool, FastTLABRefill, true, \
2028 "Use fast TLAB refill code") \
2029 \
2030 product(bool, PrintTLAB, false, \
2031 "Print various TLAB related information") \
2032 \
2033 product(bool, TLABStats, true, \
2034 "Print various TLAB related information") \
2035 \
2036 product(bool, UseBlockZeroing, false, \
2037 "Use special cpu instructions for block zeroing") \
2038 \
2039 product(intx, BlockZeroingLowLimit, 2048, \
2040 "Minimum size in bytes when block zeroing will be used") \
2041 \
2042 product(bool, UseBlockCopy, false, \
2043 "Use special cpu instructions for block copy") \
2044 \
2045 product(intx, BlockCopyLowLimit, 2048, \
2046 "Minimum size in bytes when block copy will be used") \
2047 \
2048 product(bool, PrintRevisitStats, false, \
2049 "Print revisit (klass and MDO) stack related information") \
2050 \
2051 EMBEDDED_ONLY(product(bool, LowMemoryProtection, true, \
2052 "Enable LowMemoryProtection")) \
2053 \
2054 product_pd(bool, NeverActAsServerClassMachine, \
2055 "Never act like a server-class machine") \
2056 \
2057 product(bool, AlwaysActAsServerClassMachine, false, \
2058 "Always act like a server-class machine") \
2059 \
2060 product_pd(uint64_t, MaxRAM, \
2061 "Real memory size (in bytes) used to set maximum heap size") \
2062 \
2063 product(uintx, ErgoHeapSizeLimit, 0, \
2064 "Maximum ergonomically set heap size (in bytes); zero means use " \
2065 "MaxRAM / MaxRAMFraction") \
2066 \
2067 product(uintx, MaxRAMFraction, 4, \
2068 "Maximum fraction (1/n) of real memory used for maximum heap " \
2069 "size") \
2070 \
2071 product(uintx, DefaultMaxRAMFraction, 4, \
2072 "Maximum fraction (1/n) of real memory used for maximum heap " \
2073 "size; deprecated: to be renamed to MaxRAMFraction") \
2074 \
2075 product(uintx, MinRAMFraction, 2, \
2076 "Minimum fraction (1/n) of real memory used for maxmimum heap " \
2077 "size on systems with small physical memory size") \
2078 \
2079 product(uintx, InitialRAMFraction, 64, \
2080 "Fraction (1/n) of real memory used for initial heap size") \
2081 \
2082 product(bool, UseAutoGCSelectPolicy, false, \
2083 "Use automatic collection selection policy") \
2084 \
2085 product(uintx, AutoGCSelectPauseMillis, 5000, \
2086 "Automatic GC selection pause threshhold in ms") \
2087 \
2088 product(bool, UseAdaptiveSizePolicy, true, \
2089 "Use adaptive generation sizing policies") \
2090 \
2091 product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \
2092 "Use adaptive survivor sizing policies") \
2093 \
2094 product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \
2095 "Use adaptive young-old sizing policies at minor collections") \
2096 \
2097 product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \
2098 "Use adaptive young-old sizing policies at major collections") \
2099 \
2100 product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \
2101 "Use statistics from System.GC for adaptive size policy") \
2102 \
2103 product(bool, UseAdaptiveGCBoundary, false, \
2104 "Allow young-old boundary to move") \
2105 \
2106 develop(bool, TraceAdaptiveGCBoundary, false, \
2107 "Trace young-old boundary moves") \
2108 \
2109 develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \
2110 "Resize the virtual spaces of the young or old generations") \
2111 \
2112 product(uintx, AdaptiveSizeThroughPutPolicy, 0, \
2113 "Policy for changeing generation size for throughput goals") \
2114 \
2115 product(uintx, AdaptiveSizePausePolicy, 0, \
2116 "Policy for changing generation size for pause goals") \
2117 \
2118 develop(bool, PSAdjustTenuredGenForMinorPause, false, \
2119 "Adjust tenured generation to achive a minor pause goal") \
2120 \
2121 develop(bool, PSAdjustYoungGenForMajorPause, false, \
2122 "Adjust young generation to achive a major pause goal") \
2123 \
2124 product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \
2125 "Number of steps where heuristics is used before data is used") \
2126 \
2127 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \
2128 "Number of collections before the adaptive sizing is started") \
2129 \
2130 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \
2131 "Collecton interval for printing information; zero => never") \
2132 \
2133 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \
2134 "Use adaptive minimum footprint as a goal") \
2135 \
2136 product(uintx, AdaptiveSizePolicyWeight, 10, \
2137 "Weight given to exponential resizing, between 0 and 100") \
2138 \
2139 product(uintx, AdaptiveTimeWeight, 25, \
2140 "Weight given to time in adaptive policy, between 0 and 100") \
2141 \
2142 product(uintx, PausePadding, 1, \
2143 "How much buffer to keep for pause time") \
2144 \
2145 product(uintx, PromotedPadding, 3, \
2146 "How much buffer to keep for promotion failure") \
2147 \
2148 product(uintx, SurvivorPadding, 3, \
2149 "How much buffer to keep for survivor overflow") \
2150 \
2151 product(uintx, AdaptivePermSizeWeight, 20, \
2152 "Weight for perm gen exponential resizing, between 0 and 100") \
2153 \
2154 product(uintx, PermGenPadding, 3, \
2155 "How much buffer to keep for perm gen sizing") \
2156 \
2157 product(uintx, ThresholdTolerance, 10, \
2158 "Allowed collection cost difference between generations") \
2159 \
2160 product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \
2161 "If collection costs are within margin, reduce both by full " \
2162 "delta") \
2163 \
2164 product(uintx, YoungGenerationSizeIncrement, 20, \
2165 "Adaptive size percentage change in young generation") \
2166 \
2167 product(uintx, YoungGenerationSizeSupplement, 80, \
2168 "Supplement to YoungedGenerationSizeIncrement used at startup") \
2169 \
2170 product(uintx, YoungGenerationSizeSupplementDecay, 8, \
2171 "Decay factor to YoungedGenerationSizeSupplement") \
2172 \
2173 product(uintx, TenuredGenerationSizeIncrement, 20, \
2174 "Adaptive size percentage change in tenured generation") \
2175 \
2176 product(uintx, TenuredGenerationSizeSupplement, 80, \
2177 "Supplement to TenuredGenerationSizeIncrement used at startup") \
2178 \
2179 product(uintx, TenuredGenerationSizeSupplementDecay, 2, \
2180 "Decay factor to TenuredGenerationSizeIncrement") \
2181 \
2182 product(uintx, MaxGCPauseMillis, max_uintx, \
2183 "Adaptive size policy maximum GC pause time goal in msec, " \
2184 "or (G1 Only) the max. GC time per MMU time slice") \
2185 \
2186 product(uintx, GCPauseIntervalMillis, 0, \
2187 "Time slice for MMU specification") \
2188 \
2189 product(uintx, MaxGCMinorPauseMillis, max_uintx, \
2190 "Adaptive size policy maximum GC minor pause time goal in msec") \
2191 \
2192 product(uintx, GCTimeRatio, 99, \
2193 "Adaptive size policy application time to GC time ratio") \
2194 \
2195 product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \
2196 "Adaptive size scale down factor for shrinking") \
2197 \
2198 product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \
2199 "Adaptive size decays the major cost for long major intervals") \
2200 \
2201 product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \
2202 "Time scale over which major costs decay") \
2203 \
2204 product(uintx, MinSurvivorRatio, 3, \
2205 "Minimum ratio of young generation/survivor space size") \
2206 \
2207 product(uintx, InitialSurvivorRatio, 8, \
2208 "Initial ratio of eden/survivor space size") \
2209 \
2210 product(uintx, BaseFootPrintEstimate, 256*M, \
2211 "Estimate of footprint other than Java Heap") \
2212 \
2213 product(bool, UseGCOverheadLimit, true, \
2214 "Use policy to limit of proportion of time spent in GC " \
2215 "before an OutOfMemory error is thrown") \
2216 \
2217 product(uintx, GCTimeLimit, 98, \
2218 "Limit of proportion of time spent in GC before an OutOfMemory" \
2219 "error is thrown (used with GCHeapFreeLimit)") \
2220 \
2221 product(uintx, GCHeapFreeLimit, 2, \
2222 "Minimum percentage of free space after a full GC before an " \
2223 "OutOfMemoryError is thrown (used with GCTimeLimit)") \
2224 \
2225 develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \
2226 "Number of consecutive collections before gc time limit fires") \
2227 \
2228 product(bool, PrintAdaptiveSizePolicy, false, \
2229 "Print information about AdaptiveSizePolicy") \
2230 \
2231 product(intx, PrefetchCopyIntervalInBytes, -1, \
2232 "How far ahead to prefetch destination area (<= 0 means off)") \
2233 \
2234 product(intx, PrefetchScanIntervalInBytes, -1, \
2235 "How far ahead to prefetch scan area (<= 0 means off)") \
2236 \
2237 product(intx, PrefetchFieldsAhead, -1, \
2238 "How many fields ahead to prefetch in oop scan (<= 0 means off)") \
2239 \
2240 develop(bool, UsePrefetchQueue, true, \
2241 "Use the prefetch queue during PS promotion") \
2242 \
2243 diagnostic(bool, VerifyBeforeExit, trueInDebug, \
2244 "Verify system before exiting") \
2245 \
2246 diagnostic(bool, VerifyBeforeGC, false, \
2247 "Verify memory system before GC") \
2248 \
2249 diagnostic(bool, VerifyAfterGC, false, \
2250 "Verify memory system after GC") \
2251 \
2252 diagnostic(bool, VerifyDuringGC, false, \
2253 "Verify memory system during GC (between phases)") \
2254 \
2255 diagnostic(bool, GCParallelVerificationEnabled, true, \
2256 "Enable parallel memory system verification") \
2257 \
2258 diagnostic(bool, DeferInitialCardMark, false, \
2259 "When +ReduceInitialCardMarks, explicitly defer any that " \
2260 "may arise from new_pre_store_barrier") \
2261 \
2262 diagnostic(bool, VerifyRememberedSets, false, \
2263 "Verify GC remembered sets") \
2264 \
2265 diagnostic(bool, VerifyObjectStartArray, true, \
2266 "Verify GC object start array if verify before/after") \
2267 \
2268 product(bool, DisableExplicitGC, false, \
2269 "Tells whether calling System.gc() does a full GC") \
2270 \
2271 notproduct(bool, CheckMemoryInitialization, false, \
2272 "Checks memory initialization") \
2273 \
2274 product(bool, CollectGen0First, false, \
2275 "Collect youngest generation before each full GC") \
2276 \
2277 diagnostic(bool, BindCMSThreadToCPU, false, \
2278 "Bind CMS Thread to CPU if possible") \
2279 \
2280 diagnostic(uintx, CPUForCMSThread, 0, \
2281 "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \
2282 \
2283 product(bool, BindGCTaskThreadsToCPUs, false, \
2284 "Bind GCTaskThreads to CPUs if possible") \
2285 \
2286 product(bool, UseGCTaskAffinity, false, \
2287 "Use worker affinity when asking for GCTasks") \
2288 \
2289 product(uintx, ProcessDistributionStride, 4, \
2290 "Stride through processors when distributing processes") \
2291 \
2292 product(uintx, CMSCoordinatorYieldSleepCount, 10, \
2293 "number of times the coordinator GC thread will sleep while " \
2294 "yielding before giving up and resuming GC") \
2295 \
2296 product(uintx, CMSYieldSleepCount, 0, \
2297 "number of times a GC thread (minus the coordinator) " \
2298 "will sleep while yielding before giving up and resuming GC") \
2299 \
2300 /* gc tracing */ \
2301 manageable(bool, PrintGC, false, \
2302 "Print message at garbage collect") \
2303 \
2304 manageable(bool, PrintGCDetails, false, \
2305 "Print more details at garbage collect") \
2306 \
2307 manageable(bool, PrintGCDateStamps, false, \
2308 "Print date stamps at garbage collect") \
2309 \
2310 manageable(bool, PrintGCTimeStamps, false, \
2311 "Print timestamps at garbage collect") \
2312 \
2313 product(bool, PrintGCTaskTimeStamps, false, \
2314 "Print timestamps for individual gc worker thread tasks") \
2315 \
2316 develop(intx, ConcGCYieldTimeout, 0, \
2317 "If non-zero, assert that GC threads yield within this # of ms.") \
2318 \
2319 notproduct(bool, TraceMarkSweep, false, \
2320 "Trace mark sweep") \
2321 \
2322 product(bool, PrintReferenceGC, false, \
2323 "Print times spent handling reference objects during GC " \
2324 " (enabled only when PrintGCDetails)") \
2325 \
2326 develop(bool, TraceReferenceGC, false, \
2327 "Trace handling of soft/weak/final/phantom references") \
2328 \
2329 develop(bool, TraceFinalizerRegistration, false, \
2330 "Trace registration of final references") \
2331 \
2332 notproduct(bool, TraceScavenge, false, \
2333 "Trace scavenge") \
2334 \
2335 product_rw(bool, TraceClassLoading, false, \
2336 "Trace all classes loaded") \
2337 \
2338 product(bool, TraceClassLoadingPreorder, false, \
2339 "Trace all classes loaded in order referenced (not loaded)") \
2340 \
2341 product_rw(bool, TraceClassUnloading, false, \
2342 "Trace unloading of classes") \
2343 \
2344 product_rw(bool, TraceLoaderConstraints, false, \
2345 "Trace loader constraints") \
2346 \
2347 product(bool, TraceGen0Time, false, \
2348 "Trace accumulated time for Gen 0 collection") \
2349 \
2350 product(bool, TraceGen1Time, false, \
2351 "Trace accumulated time for Gen 1 collection") \
2352 \
2353 product(bool, PrintTenuringDistribution, false, \
2354 "Print tenuring age information") \
2355 \
2356 product_rw(bool, PrintHeapAtGC, false, \
2357 "Print heap layout before and after each GC") \
2358 \
2359 product_rw(bool, PrintHeapAtGCExtended, false, \
2360 "Prints extended information about the layout of the heap " \
2361 "when -XX:+PrintHeapAtGC is set") \
2362 \
2363 product(bool, PrintHeapAtSIGBREAK, true, \
2364 "Print heap layout in response to SIGBREAK") \
2365 \
2366 manageable(bool, PrintClassHistogramBeforeFullGC, false, \
2367 "Print a class histogram before any major stop-world GC") \
2368 \
2369 manageable(bool, PrintClassHistogramAfterFullGC, false, \
2370 "Print a class histogram after any major stop-world GC") \
2371 \
2372 manageable(bool, PrintClassHistogram, false, \
2373 "Print a histogram of class instances") \
2374 \
2375 develop(bool, TraceWorkGang, false, \
2376 "Trace activities of work gangs") \
2377 \
2378 product(bool, TraceParallelOldGCTasks, false, \
2379 "Trace multithreaded GC activity") \
2380 \
2381 develop(bool, TraceBlockOffsetTable, false, \
2382 "Print BlockOffsetTable maps") \
2383 \
2384 develop(bool, TraceCardTableModRefBS, false, \
2385 "Print CardTableModRefBS maps") \
2386 \
2387 develop(bool, TraceGCTaskManager, false, \
2388 "Trace actions of the GC task manager") \
2389 \
2390 develop(bool, TraceGCTaskQueue, false, \
2391 "Trace actions of the GC task queues") \
2392 \
2393 diagnostic(bool, TraceGCTaskThread, false, \
2394 "Trace actions of the GC task threads") \
2395 \
2396 product(bool, PrintParallelOldGCPhaseTimes, false, \
2397 "Print the time taken by each parallel old gc phase." \
2398 "PrintGCDetails must also be enabled.") \
2399 \
2400 develop(bool, TraceParallelOldGCMarkingPhase, false, \
2401 "Trace parallel old gc marking phase") \
2402 \
2403 develop(bool, TraceParallelOldGCSummaryPhase, false, \
2404 "Trace parallel old gc summary phase") \
2405 \
2406 develop(bool, TraceParallelOldGCCompactionPhase, false, \
2407 "Trace parallel old gc compaction phase") \
2408 \
2409 develop(bool, TraceParallelOldGCDensePrefix, false, \
2410 "Trace parallel old gc dense prefix computation") \
2411 \
2412 develop(bool, IgnoreLibthreadGPFault, false, \
2413 "Suppress workaround for libthread GP fault") \
2414 \
2415 product(bool, PrintJNIGCStalls, false, \
2416 "Print diagnostic message when GC is stalled" \
2417 "by JNI critical section") \
2418 \
2419 /* GC log rotation setting */ \
2420 \
2421 product(bool, UseGCLogFileRotation, false, \
2422 "Prevent large gclog file for long running app. " \
2423 "Requires -Xloggc:<filename>") \
2424 \
2425 product(uintx, NumberOfGCLogFiles, 0, \
2426 "Number of gclog files in rotation, " \
2427 "Default: 0, no rotation") \
2428 \
2429 product(uintx, GCLogFileSize, 0, \
2430 "GC log file size, Default: 0 bytes, no rotation " \
2431 "Only valid with UseGCLogFileRotation") \
2432 \
2433 /* JVMTI heap profiling */ \
2434 \
2435 diagnostic(bool, TraceJVMTIObjectTagging, false, \
2436 "Trace JVMTI object tagging calls") \
2437 \
2438 diagnostic(bool, VerifyBeforeIteration, false, \
2439 "Verify memory system before JVMTI iteration") \
2440 \
2441 /* compiler interface */ \
2442 \
2443 develop(bool, CIPrintCompilerName, false, \
2444 "when CIPrint is active, print the name of the active compiler") \
2445 \
2446 develop(bool, CIPrintCompileQueue, false, \
2447 "display the contents of the compile queue whenever a " \
2448 "compilation is enqueued") \
2449 \
2450 develop(bool, CIPrintRequests, false, \
2451 "display every request for compilation") \
2452 \
2453 product(bool, CITime, false, \
2454 "collect timing information for compilation") \
2455 \
2456 develop(bool, CITimeEach, false, \
2457 "display timing information after each successful compilation") \
2458 \
2459 develop(bool, CICountOSR, true, \
2460 "use a separate counter when assigning ids to osr compilations") \
2461 \
2462 develop(bool, CICompileNatives, true, \
2463 "compile native methods if supported by the compiler") \
2464 \
2465 develop_pd(bool, CICompileOSR, \
2466 "compile on stack replacement methods if supported by the " \
2467 "compiler") \
2468 \
2469 develop(bool, CIPrintMethodCodes, false, \
2470 "print method bytecodes of the compiled code") \
2471 \
2472 develop(bool, CIPrintTypeFlow, false, \
2473 "print the results of ciTypeFlow analysis") \
2474 \
2475 develop(bool, CITraceTypeFlow, false, \
2476 "detailed per-bytecode tracing of ciTypeFlow analysis") \
2477 \
2478 develop(intx, CICloneLoopTestLimit, 100, \
2479 "size limit for blocks heuristically cloned in ciTypeFlow") \
2480 \
2481 develop(intx, OSROnlyBCI, -1, \
2482 "OSR only at this bci. Negative values mean exclude that bci") \
2483 \
2484 /* temp diagnostics */ \
2485 \
2486 diagnostic(bool, TraceRedundantCompiles, false, \
2487 "Have compile broker print when a request already in the queue is"\
2488 " requested again") \
2489 \
2490 diagnostic(bool, InitialCompileFast, false, \
2491 "Initial compile at CompLevel_fast_compile") \
2492 \
2493 diagnostic(bool, InitialCompileReallyFast, false, \
2494 "Initial compile at CompLevel_really_fast_compile (no profile)") \
2495 \
2496 diagnostic(bool, FullProfileOnReInterpret, true, \
2497 "On re-interpret unc-trap compile next at CompLevel_fast_compile")\
2498 \
2499 /* compiler */ \
2500 \
2501 product(intx, CICompilerCount, CI_COMPILER_COUNT, \
2502 "Number of compiler threads to run") \
2503 \
2504 product(intx, CompilationPolicyChoice, 0, \
2505 "which compilation policy (0/1)") \
2506 \
2507 develop(bool, UseStackBanging, true, \
2508 "use stack banging for stack overflow checks (required for " \
2509 "proper StackOverflow handling; disable only to measure cost " \
2510 "of stackbanging)") \
2511 \
2512 develop(bool, Use24BitFPMode, true, \
2513 "Set 24-bit FPU mode on a per-compile basis ") \
2514 \
2515 develop(bool, Use24BitFP, true, \
2516 "use FP instructions that produce 24-bit precise results") \
2517 \
2518 develop(bool, UseStrictFP, true, \
2519 "use strict fp if modifier strictfp is set") \
2520 \
2521 develop(bool, GenerateSynchronizationCode, true, \
2522 "generate locking/unlocking code for synchronized methods and " \
2523 "monitors") \
2524 \
2525 develop(bool, GenerateCompilerNullChecks, true, \
2526 "Generate explicit null checks for loads/stores/calls") \
2527 \
2528 develop(bool, GenerateRangeChecks, true, \
2529 "Generate range checks for array accesses") \
2530 \
2531 develop_pd(bool, ImplicitNullChecks, \
2532 "generate code for implicit null checks") \
2533 \
2534 product(bool, PrintSafepointStatistics, false, \
2535 "print statistics about safepoint synchronization") \
2536 \
2537 product(intx, PrintSafepointStatisticsCount, 300, \
2538 "total number of safepoint statistics collected " \
2539 "before printing them out") \
2540 \
2541 product(intx, PrintSafepointStatisticsTimeout, -1, \
2542 "print safepoint statistics only when safepoint takes" \
2543 " more than PrintSafepointSatisticsTimeout in millis") \
2544 \
2545 product(bool, TraceSafepointCleanupTime, false, \
2546 "print the break down of clean up tasks performed during" \
2547 " safepoint") \
2548 \
2549 develop(bool, InlineAccessors, true, \
2550 "inline accessor methods (get/set)") \
2551 \
2552 product(bool, Inline, true, \
2553 "enable inlining") \
2554 \
2555 product(bool, ClipInlining, true, \
2556 "clip inlining if aggregate method exceeds DesiredMethodLimit") \
2557 \
2558 develop(bool, UseCHA, true, \
2559 "enable CHA") \
2560 \
2561 product(bool, UseTypeProfile, true, \
2562 "Check interpreter profile for historically monomorphic calls") \
2563 \
2564 product(intx, TypeProfileMajorReceiverPercent, 90, \
2565 "% of major receiver type to all profiled receivers") \
2566 \
2567 notproduct(bool, TimeCompiler, false, \
2568 "time the compiler") \
2569 \
2570 notproduct(bool, TimeCompiler2, false, \
2571 "detailed time the compiler (requires +TimeCompiler)") \
2572 \
2573 diagnostic(bool, PrintInlining, false, \
2574 "prints inlining optimizations") \
2575 \
2576 diagnostic(bool, PrintIntrinsics, false, \
2577 "prints attempted and successful inlining of intrinsics") \
2578 \
2579 product(bool, UseCountLeadingZerosInstruction, false, \
2580 "Use count leading zeros instruction") \
2581 \
2582 product(bool, UsePopCountInstruction, false, \
2583 "Use population count instruction") \
2584 \
2585 diagnostic(ccstrlist, DisableIntrinsic, "", \
2586 "do not expand intrinsics whose (internal) names appear here") \
2587 \
2588 develop(bool, StressReflectiveCode, false, \
2589 "Use inexact types at allocations, etc., to test reflection") \
2590 \
2591 develop(bool, EagerInitialization, false, \
2592 "Eagerly initialize classes if possible") \
2593 \
2594 develop(bool, TraceMethodReplacement, false, \
2595 "Print when methods are replaced do to recompilation") \
2596 \
2597 develop(bool, PrintMethodFlushing, false, \
2598 "print the nmethods being flushed") \
2599 \
2600 notproduct(bool, LogMultipleMutexLocking, false, \
2601 "log locking and unlocking of mutexes (only if multiple locks " \
2602 "are held)") \
2603 \
2604 develop(bool, UseRelocIndex, false, \
2605 "use an index to speed random access to relocations") \
2606 \
2607 develop(bool, StressCodeBuffers, false, \
2608 "Exercise code buffer expansion and other rare state changes") \
2609 \
2610 diagnostic(bool, DebugNonSafepoints, trueInDebug, \
2611 "Generate extra debugging info for non-safepoints in nmethods") \
2612 \
2613 diagnostic(bool, DebugInlinedCalls, true, \
2614 "If false, restricts profiled locations to the root method only") \
2615 \
2616 product(bool, PrintVMOptions, false, \
2617 "Print flags that appeared on the command line") \
2618 \
2619 product(bool, IgnoreUnrecognizedVMOptions, false, \
2620 "Ignore unrecognized VM options") \
2621 \
2622 product(bool, PrintCommandLineFlags, false, \
2623 "Print flags specified on command line or set by ergonomics") \
2624 \
2625 product(bool, PrintFlagsInitial, false, \
2626 "Print all VM flags before argument processing and exit VM") \
2627 \
2628 product(bool, PrintFlagsFinal, false, \
2629 "Print all VM flags after argument and ergonomic processing") \
2630 \
2631 notproduct(bool, PrintFlagsWithComments, false, \
2632 "Print all VM flags with default values and descriptions and exit")\
2633 \
2634 diagnostic(bool, SerializeVMOutput, true, \
2635 "Use a mutex to serialize output to tty and hotspot.log") \
2636 \
2637 diagnostic(bool, DisplayVMOutput, true, \
2638 "Display all VM output on the tty, independently of LogVMOutput") \
2639 \
2640 diagnostic(bool, LogVMOutput, trueInDebug, \
2641 "Save VM output to hotspot.log, or to LogFile") \
2642 \
2643 diagnostic(ccstr, LogFile, NULL, \
2644 "If LogVMOutput is on, save VM output to this file [hotspot.log]") \
2645 \
2646 product(ccstr, ErrorFile, NULL, \
2647 "If an error occurs, save the error data to this file " \
2648 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \
2649 \
2650 product(bool, DisplayVMOutputToStderr, false, \
2651 "If DisplayVMOutput is true, display all VM output to stderr") \
2652 \
2653 product(bool, DisplayVMOutputToStdout, false, \
2654 "If DisplayVMOutput is true, display all VM output to stdout") \
2655 \
2656 product(bool, UseHeavyMonitors, false, \
2657 "use heavyweight instead of lightweight Java monitors") \
2658 \
2659 notproduct(bool, PrintSymbolTableSizeHistogram, false, \
2660 "print histogram of the symbol table") \
2661 \
2662 notproduct(bool, ExitVMOnVerifyError, false, \
2663 "standard exit from VM if bytecode verify error " \
2664 "(only in debug mode)") \
2665 \
2666 notproduct(ccstr, AbortVMOnException, NULL, \
2667 "Call fatal if this exception is thrown. Example: " \
2668 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \
2669 \
2670 notproduct(ccstr, AbortVMOnExceptionMessage, NULL, \
2671 "Call fatal if the exception pointed by AbortVMOnException " \
2672 "has this message.") \
2673 \
2674 develop(bool, DebugVtables, false, \
2675 "add debugging code to vtable dispatch") \
2676 \
2677 develop(bool, PrintVtables, false, \
2678 "print vtables when printing klass") \
2679 \
2680 notproduct(bool, PrintVtableStats, false, \
2681 "print vtables stats at end of run") \
2682 \
2683 develop(bool, TraceCreateZombies, false, \
2684 "trace creation of zombie nmethods") \
2685 \
2686 notproduct(bool, IgnoreLockingAssertions, false, \
2687 "disable locking assertions (for speed)") \
2688 \
2689 notproduct(bool, VerifyLoopOptimizations, false, \
2690 "verify major loop optimizations") \
2691 \
2692 product(bool, RangeCheckElimination, true, \
2693 "Split loop iterations to eliminate range checks") \
2694 \
2695 develop_pd(bool, UncommonNullCast, \
2696 "track occurrences of null in casts; adjust compiler tactics") \
2697 \
2698 develop(bool, TypeProfileCasts, true, \
2699 "treat casts like calls for purposes of type profiling") \
2700 \
2701 develop(bool, MonomorphicArrayCheck, true, \
2702 "Uncommon-trap array store checks that require full type check") \
2703 \
2704 diagnostic(bool, ProfileDynamicTypes, true, \
2705 "do extra type profiling and use it more aggressively") \
2706 \
2707 develop(bool, DelayCompilationDuringStartup, true, \
2708 "Delay invoking the compiler until main application class is " \
2709 "loaded") \
2710 \
2711 develop(bool, CompileTheWorld, false, \
2712 "Compile all methods in all classes in bootstrap class path " \
2713 "(stress test)") \
2714 \
2715 develop(bool, CompileTheWorldPreloadClasses, true, \
2716 "Preload all classes used by a class before start loading") \
2717 \
2718 notproduct(intx, CompileTheWorldSafepointInterval, 100, \
2719 "Force a safepoint every n compiles so sweeper can keep up") \
2720 \
2721 develop(bool, TraceIterativeGVN, false, \
2722 "Print progress during Iterative Global Value Numbering") \
2723 \
2724 develop(bool, FillDelaySlots, true, \
2725 "Fill delay slots (on SPARC only)") \
2726 \
2727 develop(bool, VerifyIterativeGVN, false, \
2728 "Verify Def-Use modifications during sparse Iterative Global " \
2729 "Value Numbering") \
2730 \
2731 notproduct(bool, TracePhaseCCP, false, \
2732 "Print progress during Conditional Constant Propagation") \
2733 \
2734 develop(bool, TimeLivenessAnalysis, false, \
2735 "Time computation of bytecode liveness analysis") \
2736 \
2737 develop(bool, TraceLivenessGen, false, \
2738 "Trace the generation of liveness analysis information") \
2739 \
2740 notproduct(bool, TraceLivenessQuery, false, \
2741 "Trace queries of liveness analysis information") \
2742 \
2743 notproduct(bool, CollectIndexSetStatistics, false, \
2744 "Collect information about IndexSets") \
2745 \
2746 develop(bool, PrintDominators, false, \
2747 "Print out dominator trees for GVN") \
2748 \
2749 develop(bool, UseLoopSafepoints, true, \
2750 "Generate Safepoint nodes in every loop") \
2751 \
2752 notproduct(bool, TraceCISCSpill, false, \
2753 "Trace allocators use of cisc spillable instructions") \
2754 \
2755 notproduct(bool, TraceSpilling, false, \
2756 "Trace spilling") \
2757 \
2758 product(bool, SplitIfBlocks, true, \
2759 "Clone compares and control flow through merge points to fold " \
2760 "some branches") \
2761 \
2762 develop(intx, FastAllocateSizeLimit, 128*K, \
2763 /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \
2764 "Inline allocations larger than this in doublewords must go slow")\
2765 \
2766 product(bool, AggressiveOpts, false, \
2767 "Enable aggressive optimizations - see arguments.cpp") \
2768 \
2769 product(bool, UseStringCache, false, \
2770 "Enable String cache capabilities on String.java") \
2771 \
2772 /* statistics */ \
2773 develop(bool, CountCompiledCalls, false, \
2774 "counts method invocations") \
2775 \
2776 notproduct(bool, CountRuntimeCalls, false, \
2777 "counts VM runtime calls") \
2778 \
2779 develop(bool, CountJNICalls, false, \
2780 "counts jni method invocations") \
2781 \
2782 notproduct(bool, CountJVMCalls, false, \
2783 "counts jvm method invocations") \
2784 \
2785 notproduct(bool, CountRemovableExceptions, false, \
2786 "count exceptions that could be replaced by branches due to " \
2787 "inlining") \
2788 \
2789 notproduct(bool, ICMissHistogram, false, \
2790 "produce histogram of IC misses") \
2791 \
2792 notproduct(bool, PrintClassStatistics, false, \
2793 "prints class statistics at end of run") \
2794 \
2795 notproduct(bool, PrintMethodStatistics, false, \
2796 "prints method statistics at end of run") \
2797 \
2798 /* interpreter */ \
2799 develop(bool, ClearInterpreterLocals, false, \
2800 "Always clear local variables of interpreter activations upon " \
2801 "entry") \
2802 \
2803 product_pd(bool, RewriteBytecodes, \
2804 "Allow rewriting of bytecodes (bytecodes are not immutable)") \
2805 \
2806 product_pd(bool, RewriteFrequentPairs, \
2807 "Rewrite frequently used bytecode pairs into a single bytecode") \
2808 \
2809 diagnostic(bool, PrintInterpreter, false, \
2810 "Prints the generated interpreter code") \
2811 \
2812 product(bool, UseInterpreter, true, \
2813 "Use interpreter for non-compiled methods") \
2814 \
2815 develop(bool, UseFastSignatureHandlers, true, \
2816 "Use fast signature handlers for native calls") \
2817 \
2818 develop(bool, UseV8InstrsOnly, false, \
2819 "Use SPARC-V8 Compliant instruction subset") \
2820 \
2821 product(bool, UseNiagaraInstrs, false, \
2822 "Use Niagara-efficient instruction subset") \
2823 \
2824 develop(bool, UseCASForSwap, false, \
2825 "Do not use swap instructions, but only CAS (in a loop) on SPARC")\
2826 \
2827 product(bool, UseLoopCounter, true, \
2828 "Increment invocation counter on backward branch") \
2829 \
2830 product(bool, UseFastEmptyMethods, true, \
2831 "Use fast method entry code for empty methods") \
2832 \
2833 product(bool, UseFastAccessorMethods, true, \
2834 "Use fast method entry code for accessor methods") \
2835 \
2836 product_pd(bool, UseOnStackReplacement, \
2837 "Use on stack replacement, calls runtime if invoc. counter " \
2838 "overflows in loop") \
2839 \
2840 notproduct(bool, TraceOnStackReplacement, false, \
2841 "Trace on stack replacement") \
2842 \
2843 develop(bool, PoisonOSREntry, true, \
2844 "Detect abnormal calls to OSR code") \
2845 \
2846 product_pd(bool, PreferInterpreterNativeStubs, \
2847 "Use always interpreter stubs for native methods invoked via " \
2848 "interpreter") \
2849 \
2850 develop(bool, CountBytecodes, false, \
2851 "Count number of bytecodes executed") \
2852 \
2853 develop(bool, PrintBytecodeHistogram, false, \
2854 "Print histogram of the executed bytecodes") \
2855 \
2856 develop(bool, PrintBytecodePairHistogram, false, \
2857 "Print histogram of the executed bytecode pairs") \
2858 \
2859 diagnostic(bool, PrintSignatureHandlers, false, \
2860 "Print code generated for native method signature handlers") \
2861 \
2862 develop(bool, VerifyOops, false, \
2863 "Do plausibility checks for oops") \
2864 \
2865 develop(bool, CheckUnhandledOops, false, \
2866 "Check for unhandled oops in VM code") \
2867 \
2868 develop(bool, VerifyJNIFields, trueInDebug, \
2869 "Verify jfieldIDs for instance fields") \
2870 \
2871 notproduct(bool, VerifyJNIEnvThread, false, \
2872 "Verify JNIEnv.thread == Thread::current() when entering VM " \
2873 "from JNI") \
2874 \
2875 develop(bool, VerifyFPU, false, \
2876 "Verify FPU state (check for NaN's, etc.)") \
2877 \
2878 develop(bool, VerifyThread, false, \
2879 "Watch the thread register for corruption (SPARC only)") \
2880 \
2881 develop(bool, VerifyActivationFrameSize, false, \
2882 "Verify that activation frame didn't become smaller than its " \
2883 "minimal size") \
2884 \
2885 develop(bool, TraceFrequencyInlining, false, \
2886 "Trace frequency based inlining") \
2887 \
2888 notproduct(bool, TraceTypeProfile, false, \
2889 "Trace type profile") \
2890 \
2891 develop_pd(bool, InlineIntrinsics, \
2892 "Inline intrinsics that can be statically resolved") \
2893 \
2894 product_pd(bool, ProfileInterpreter, \
2895 "Profile at the bytecode level during interpretation") \
2896 \
2897 develop_pd(bool, ProfileTraps, \
2898 "Profile deoptimization traps at the bytecode level") \
2899 \
2900 product(intx, ProfileMaturityPercentage, 20, \
2901 "number of method invocations/branches (expressed as % of " \
2902 "CompileThreshold) before using the method's profile") \
2903 \
2904 develop(bool, PrintMethodData, false, \
2905 "Print the results of +ProfileInterpreter at end of run") \
2906 \
2907 develop(bool, VerifyDataPointer, trueInDebug, \
2908 "Verify the method data pointer during interpreter profiling") \
2909 \
2910 develop(bool, VerifyCompiledCode, false, \
2911 "Include miscellaneous runtime verifications in nmethod code; " \
2912 "default off because it disturbs nmethod size heuristics") \
2913 \
2914 notproduct(bool, CrashGCForDumpingJavaThread, false, \
2915 "Manually make GC thread crash then dump java stack trace; " \
2916 "Test only") \
2917 \
2918 /* compilation */ \
2919 product(bool, UseCompiler, true, \
2920 "use compilation") \
2921 \
2922 develop(bool, TraceCompilationPolicy, false, \
2923 "Trace compilation policy") \
2924 \
2925 develop(bool, TimeCompilationPolicy, false, \
2926 "Time the compilation policy") \
2927 \
2928 product(bool, UseCounterDecay, true, \
2929 "adjust recompilation counters") \
2930 \
2931 develop(intx, CounterHalfLifeTime, 30, \
2932 "half-life time of invocation counters (in secs)") \
2933 \
2934 develop(intx, CounterDecayMinIntervalLength, 500, \
2935 "Min. ms. between invocation of CounterDecay") \
2936 \
2937 product(bool, AlwaysCompileLoopMethods, false, \
2938 "when using recompilation, never interpret methods " \
2939 "containing loops") \
2940 \
2941 product(bool, DontCompileHugeMethods, true, \
2942 "don't compile methods > HugeMethodLimit") \
2943 \
2944 /* Bytecode escape analysis estimation. */ \
2945 product(bool, EstimateArgEscape, true, \
2946 "Analyze bytecodes to estimate escape state of arguments") \
2947 \
2948 product(intx, BCEATraceLevel, 0, \
2949 "How much tracing to do of bytecode escape analysis estimates") \
2950 \
2951 product(intx, MaxBCEAEstimateLevel, 5, \
2952 "Maximum number of nested calls that are analyzed by BC EA.") \
2953 \
2954 product(intx, MaxBCEAEstimateSize, 150, \
2955 "Maximum bytecode size of a method to be analyzed by BC EA.") \
2956 \
2957 product(intx, AllocatePrefetchStyle, 1, \
2958 "0 = no prefetch, " \
2959 "1 = prefetch instructions for each allocation, " \
2960 "2 = use TLAB watermark to gate allocation prefetch, " \
2961 "3 = use BIS instruction on Sparc for allocation prefetch") \
2962 \
2963 product(intx, AllocatePrefetchDistance, -1, \
2964 "Distance to prefetch ahead of allocation pointer") \
2965 \
2966 product(intx, AllocatePrefetchLines, 3, \
2967 "Number of lines to prefetch ahead of array allocation pointer") \
2968 \
2969 product(intx, AllocateInstancePrefetchLines, 1, \
2970 "Number of lines to prefetch ahead of instance allocation pointer") \
2971 \
2972 product(intx, AllocatePrefetchStepSize, 16, \
2973 "Step size in bytes of sequential prefetch instructions") \
2974 \
2975 product(intx, AllocatePrefetchInstr, 0, \
2976 "Prefetch instruction to prefetch ahead of allocation pointer") \
2977 \
2978 product(intx, ReadPrefetchInstr, 0, \
2979 "Prefetch instruction to prefetch ahead") \
2980 \
2981 product(uintx, ArraycopySrcPrefetchDistance, 0, \
2982 "Distance to prefetch source array in arracopy") \
2983 \
2984 product(uintx, ArraycopyDstPrefetchDistance, 0, \
2985 "Distance to prefetch destination array in arracopy") \
2986 \
2987 /* deoptimization */ \
2988 develop(bool, TraceDeoptimization, false, \
2989 "Trace deoptimization") \
2990 \
2991 develop(bool, DebugDeoptimization, false, \
2992 "Tracing various information while debugging deoptimization") \
2993 \
2994 product(intx, SelfDestructTimer, 0, \
2995 "Will cause VM to terminate after a given time (in minutes) " \
2996 "(0 means off)") \
2997 \
2998 product(intx, MaxJavaStackTraceDepth, 1024, \
2999 "Max. no. of lines in the stack trace for Java exceptions " \
3000 "(0 means all)") \
3001 \
3002 NOT_EMBEDDED(diagnostic(intx, GuaranteedSafepointInterval, 1000, \
3003 "Guarantee a safepoint (at least) every so many milliseconds " \
3004 "(0 means none)")) \
3005 \
3006 EMBEDDED_ONLY(product(intx, GuaranteedSafepointInterval, 0, \
3007 "Guarantee a safepoint (at least) every so many milliseconds " \
3008 "(0 means none)")) \
3009 \
3010 product(intx, SafepointTimeoutDelay, 10000, \
3011 "Delay in milliseconds for option SafepointTimeout") \
3012 \
3013 product(intx, NmethodSweepFraction, 4, \
3014 "Number of invocations of sweeper to cover all nmethods") \
3015 \
3016 product(intx, NmethodSweepCheckInterval, 5, \
3017 "Compilers wake up every n seconds to possibly sweep nmethods") \
3018 \
3019 notproduct(bool, LogSweeper, false, \
3020 "Keep a ring buffer of sweeper activity") \
3021 \
3022 notproduct(intx, SweeperLogEntries, 1024, \
3023 "Number of records in the ring buffer of sweeper activity") \
3024 \
3025 notproduct(intx, MemProfilingInterval, 500, \
3026 "Time between each invocation of the MemProfiler") \
3027 \
3028 develop(intx, MallocCatchPtr, -1, \
3029 "Hit breakpoint when mallocing/freeing this pointer") \
3030 \
3031 notproduct(intx, AssertRepeat, 1, \
3032 "number of times to evaluate expression in assert " \
3033 "(to estimate overhead); only works with -DUSE_REPEATED_ASSERTS") \
3034 \
3035 notproduct(ccstrlist, SuppressErrorAt, "", \
3036 "List of assertions (file:line) to muzzle") \
3037 \
3038 notproduct(uintx, HandleAllocationLimit, 1024, \
3039 "Threshold for HandleMark allocation when +TraceHandleAllocation "\
3040 "is used") \
3041 \
3042 develop(uintx, TotalHandleAllocationLimit, 1024, \
3043 "Threshold for total handle allocation when " \
3044 "+TraceHandleAllocation is used") \
3045 \
3046 develop(intx, StackPrintLimit, 100, \
3047 "number of stack frames to print in VM-level stack dump") \
3048 \
3049 notproduct(intx, MaxElementPrintSize, 256, \
3050 "maximum number of elements to print") \
3051 \
3052 notproduct(intx, MaxSubklassPrintSize, 4, \
3053 "maximum number of subklasses to print when printing klass") \
3054 \
3055 product(intx, MaxInlineLevel, 9, \
3056 "maximum number of nested calls that are inlined") \
3057 \
3058 product(intx, MaxRecursiveInlineLevel, 1, \
3059 "maximum number of nested recursive calls that are inlined") \
3060 \
3061 product_pd(intx, InlineSmallCode, \
3062 "Only inline already compiled methods if their code size is " \
3063 "less than this") \
3064 \
3065 product(intx, MaxInlineSize, 35, \
3066 "maximum bytecode size of a method to be inlined") \
3067 \
3068 product_pd(intx, FreqInlineSize, \
3069 "maximum bytecode size of a frequent method to be inlined") \
3070 \
3071 product(intx, MaxTrivialSize, 6, \
3072 "maximum bytecode size of a trivial method to be inlined") \
3073 \
3074 product(intx, MinInliningThreshold, 250, \
3075 "min. invocation count a method needs to have to be inlined") \
3076 \
3077 develop(intx, AlignEntryCode, 4, \
3078 "aligns entry code to specified value (in bytes)") \
3079 \
3080 develop(intx, MethodHistogramCutoff, 100, \
3081 "cutoff value for method invoc. histogram (+CountCalls)") \
3082 \
3083 develop(intx, ProfilerNumberOfInterpretedMethods, 25, \
3084 "# of interpreted methods to show in profile") \
3085 \
3086 develop(intx, ProfilerNumberOfCompiledMethods, 25, \
3087 "# of compiled methods to show in profile") \
3088 \
3089 develop(intx, ProfilerNumberOfStubMethods, 25, \
3090 "# of stub methods to show in profile") \
3091 \
3092 develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \
3093 "# of runtime stub nodes to show in profile") \
3094 \
3095 product(intx, ProfileIntervalsTicks, 100, \
3096 "# of ticks between printing of interval profile " \
3097 "(+ProfileIntervals)") \
3098 \
3099 notproduct(intx, ScavengeALotInterval, 1, \
3100 "Interval between which scavenge will occur with +ScavengeALot") \
3101 \
3102 notproduct(intx, FullGCALotInterval, 1, \
3103 "Interval between which full gc will occur with +FullGCALot") \
3104 \
3105 notproduct(intx, FullGCALotStart, 0, \
3106 "For which invocation to start FullGCAlot") \
3107 \
3108 notproduct(intx, FullGCALotDummies, 32*K, \
3109 "Dummy object allocated with +FullGCALot, forcing all objects " \
3110 "to move") \
3111 \
3112 develop(intx, DontYieldALotInterval, 10, \
3113 "Interval between which yields will be dropped (milliseconds)") \
3114 \
3115 develop(intx, MinSleepInterval, 1, \
3116 "Minimum sleep() interval (milliseconds) when " \
3117 "ConvertSleepToYield is off (used for SOLARIS)") \
3118 \
3119 product(intx, EventLogLength, 2000, \
3120 "maximum nof events in event log") \
3121 \
3122 develop(intx, ProfilerPCTickThreshold, 15, \
3123 "Number of ticks in a PC buckets to be a hotspot") \
3124 \
3125 notproduct(intx, DeoptimizeALotInterval, 5, \
3126 "Number of exits until DeoptimizeALot kicks in") \
3127 \
3128 notproduct(intx, ZombieALotInterval, 5, \
3129 "Number of exits until ZombieALot kicks in") \
3130 \
3131 develop(bool, StressNonEntrant, false, \
3132 "Mark nmethods non-entrant at registration") \
3133 \
3134 diagnostic(intx, MallocVerifyInterval, 0, \
3135 "if non-zero, verify C heap after every N calls to " \
3136 "malloc/realloc/free") \
3137 \
3138 diagnostic(intx, MallocVerifyStart, 0, \
3139 "if non-zero, start verifying C heap after Nth call to " \
3140 "malloc/realloc/free") \
3141 \
3142 product(intx, TypeProfileWidth, 2, \
3143 "number of receiver types to record in call/cast profile") \
3144 \
3145 develop(intx, BciProfileWidth, 2, \
3146 "number of return bci's to record in ret profile") \
3147 \
3148 product(intx, PerMethodRecompilationCutoff, 400, \
3149 "After recompiling N times, stay in the interpreter (-1=>'Inf')") \
3150 \
3151 product(intx, PerBytecodeRecompilationCutoff, 200, \
3152 "Per-BCI limit on repeated recompilation (-1=>'Inf')") \
3153 \
3154 product(intx, PerMethodTrapLimit, 100, \
3155 "Limit on traps (of one kind) in a method (includes inlines)") \
3156 \
3157 product(intx, PerBytecodeTrapLimit, 4, \
3158 "Limit on traps (of one kind) at a particular BCI") \
3159 \
3160 develop(intx, FreqCountInvocations, 1, \
3161 "Scaling factor for branch frequencies (deprecated)") \
3162 \
3163 develop(intx, InlineFrequencyRatio, 20, \
3164 "Ratio of call site execution to caller method invocation") \
3165 \
3166 develop_pd(intx, InlineFrequencyCount, \
3167 "Count of call site execution necessary to trigger frequent " \
3168 "inlining") \
3169 \
3170 develop(intx, InlineThrowCount, 50, \
3171 "Force inlining of interpreted methods that throw this often") \
3172 \
3173 develop(intx, InlineThrowMaxSize, 200, \
3174 "Force inlining of throwing methods smaller than this") \
3175 \
3176 product(intx, AliasLevel, 3, \
3177 "0 for no aliasing, 1 for oop/field/static/array split, " \
3178 "2 for class split, 3 for unique instances") \
3179 \
3180 develop(bool, VerifyAliases, false, \
3181 "perform extra checks on the results of alias analysis") \
3182 \
3183 develop(intx, ProfilerNodeSize, 1024, \
3184 "Size in K to allocate for the Profile Nodes of each thread") \
3185 \
3186 develop(intx, V8AtomicOperationUnderLockSpinCount, 50, \
3187 "Number of times to spin wait on a v8 atomic operation lock") \
3188 \
3189 product(intx, ReadSpinIterations, 100, \
3190 "Number of read attempts before a yield (spin inner loop)") \
3191 \
3192 product_pd(intx, PreInflateSpin, \
3193 "Number of times to spin wait before inflation") \
3194 \
3195 product(intx, PreBlockSpin, 10, \
3196 "Number of times to spin in an inflated lock before going to " \
3197 "an OS lock") \
3198 \
3199 /* gc parameters */ \
3200 product(uintx, InitialHeapSize, 0, \
3201 "Initial heap size (in bytes); zero means OldSize + NewSize") \
3202 \
3203 product(uintx, MaxHeapSize, ScaleForWordSize(96*M), \
3204 "Maximum heap size (in bytes)") \
3205 \
3206 product(uintx, OldSize, ScaleForWordSize(4*M), \
3207 "Initial tenured generation size (in bytes)") \
3208 \
3209 product(uintx, NewSize, ScaleForWordSize(1*M), \
3210 "Initial new generation size (in bytes)") \
3211 \
3212 product(uintx, MaxNewSize, max_uintx, \
3213 "Maximum new generation size (in bytes), max_uintx means set " \
3214 "ergonomically") \
3215 \
3216 product(uintx, PretenureSizeThreshold, 0, \
3217 "Maximum size in bytes of objects allocated in DefNew " \
3218 "generation; zero means no maximum") \
3219 \
3220 product(uintx, TLABSize, 0, \
3221 "Starting TLAB size (in bytes); zero means set ergonomically") \
3222 \
3223 product(uintx, MinTLABSize, 2*K, \
3224 "Minimum allowed TLAB size (in bytes)") \
3225 \
3226 product(uintx, TLABAllocationWeight, 35, \
3227 "Allocation averaging weight") \
3228 \
3229 product(uintx, TLABWasteTargetPercent, 1, \
3230 "Percentage of Eden that can be wasted") \
3231 \
3232 product(uintx, TLABRefillWasteFraction, 64, \
3233 "Max TLAB waste at a refill (internal fragmentation)") \
3234 \
3235 product(uintx, TLABWasteIncrement, 4, \
3236 "Increment allowed waste at slow allocation") \
3237 \
3238 product(intx, SurvivorRatio, 8, \
3239 "Ratio of eden/survivor space size") \
3240 \
3241 product(intx, NewRatio, 2, \
3242 "Ratio of new/old generation sizes") \
3243 \
3244 product_pd(uintx, NewSizeThreadIncrease, \
3245 "Additional size added to desired new generation size per " \
3246 "non-daemon thread (in bytes)") \
3247 \
3248 product_pd(uintx, PermSize, \
3249 "Initial size of permanent generation (in bytes)") \
3250 \
3251 product_pd(uintx, MaxPermSize, \
3252 "Maximum size of permanent generation (in bytes)") \
3253 \
3254 product(uintx, MinHeapFreeRatio, 40, \
3255 "Min percentage of heap free after GC to avoid expansion") \
3256 \
3257 product(uintx, MaxHeapFreeRatio, 70, \
3258 "Max percentage of heap free after GC to avoid shrinking") \
3259 \
3260 product(intx, SoftRefLRUPolicyMSPerMB, 1000, \
3261 "Number of milliseconds per MB of free space in the heap") \
3262 \
3263 product(uintx, MinHeapDeltaBytes, ScaleForWordSize(128*K), \
3264 "Min change in heap space due to GC (in bytes)") \
3265 \
3266 product(uintx, MinPermHeapExpansion, ScaleForWordSize(256*K), \
3267 "Min expansion of permanent heap (in bytes)") \
3268 \
3269 product(uintx, MaxPermHeapExpansion, ScaleForWordSize(4*M), \
3270 "Max expansion of permanent heap without full GC (in bytes)") \
3271 \
3272 product(intx, QueuedAllocationWarningCount, 0, \
3273 "Number of times an allocation that queues behind a GC " \
3274 "will retry before printing a warning") \
3275 \
3276 diagnostic(uintx, VerifyGCStartAt, 0, \
3277 "GC invoke count where +VerifyBefore/AfterGC kicks in") \
3278 \
3279 diagnostic(intx, VerifyGCLevel, 0, \
3280 "Generation level at which to start +VerifyBefore/AfterGC") \
3281 \
3282 develop(uintx, ExitAfterGCNum, 0, \
3283 "If non-zero, exit after this GC.") \
3284 \
3285 product(intx, MaxTenuringThreshold, 15, \
3286 "Maximum value for tenuring threshold") \
3287 \
3288 product(intx, InitialTenuringThreshold, 7, \
3289 "Initial value for tenuring threshold") \
3290 \
3291 product(intx, TargetSurvivorRatio, 50, \
3292 "Desired percentage of survivor space used after scavenge") \
3293 \
3294 product(uintx, MarkSweepDeadRatio, 5, \
3295 "Percentage (0-100) of the old gen allowed as dead wood." \
3296 "Serial mark sweep treats this as both the min and max value." \
3297 "CMS uses this value only if it falls back to mark sweep." \
3298 "Par compact uses a variable scale based on the density of the" \
3299 "generation and treats this as the max value when the heap is" \
3300 "either completely full or completely empty. Par compact also" \
3301 "has a smaller default value; see arguments.cpp.") \
3302 \
3303 product(uintx, PermMarkSweepDeadRatio, 20, \
3304 "Percentage (0-100) of the perm gen allowed as dead wood." \
3305 "See MarkSweepDeadRatio for collector-specific comments.") \
3306 \
3307 product(intx, MarkSweepAlwaysCompactCount, 4, \
3308 "How often should we fully compact the heap (ignoring the dead " \
3309 "space parameters)") \
3310 \
3311 product(intx, PrintCMSStatistics, 0, \
3312 "Statistics for CMS") \
3313 \
3314 product(bool, PrintCMSInitiationStatistics, false, \
3315 "Statistics for initiating a CMS collection") \
3316 \
3317 product(intx, PrintFLSStatistics, 0, \
3318 "Statistics for CMS' FreeListSpace") \
3319 \
3320 product(intx, PrintFLSCensus, 0, \
3321 "Census for CMS' FreeListSpace") \
3322 \
3323 develop(uintx, GCExpandToAllocateDelayMillis, 0, \
3324 "Delay in ms between expansion and allocation") \
3325 \
3326 product(intx, DeferThrSuspendLoopCount, 4000, \
3327 "(Unstable) Number of times to iterate in safepoint loop " \
3328 " before blocking VM threads ") \
3329 \
3330 product(intx, DeferPollingPageLoopCount, -1, \
3331 "(Unsafe,Unstable) Number of iterations in safepoint loop " \
3332 "before changing safepoint polling page to RO ") \
3333 \
3334 product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \
3335 \
3336 product(bool, PSChunkLargeArrays, true, \
3337 "true: process large arrays in chunks") \
3338 \
3339 product(uintx, GCDrainStackTargetSize, 64, \
3340 "how many entries we'll try to leave on the stack during " \
3341 "parallel GC") \
3342 \
3343 /* stack parameters */ \
3344 product_pd(intx, StackYellowPages, \
3345 "Number of yellow zone (recoverable overflows) pages") \
3346 \
3347 product_pd(intx, StackRedPages, \
3348 "Number of red zone (unrecoverable overflows) pages") \
3349 \
3350 product_pd(intx, StackShadowPages, \
3351 "Number of shadow zone (for overflow checking) pages" \
3352 " this should exceed the depth of the VM and native call stack") \
3353 \
3354 product_pd(intx, ThreadStackSize, \
3355 "Thread Stack Size (in Kbytes)") \
3356 \
3357 product_pd(intx, VMThreadStackSize, \
3358 "Non-Java Thread Stack Size (in Kbytes)") \
3359 \
3360 product_pd(intx, CompilerThreadStackSize, \
3361 "Compiler Thread Stack Size (in Kbytes)") \
3362 \
3363 develop_pd(uintx, JVMInvokeMethodSlack, \
3364 "Stack space (bytes) required for JVM_InvokeMethod to complete") \
3365 \
3366 product(uintx, ThreadSafetyMargin, 50*M, \
3367 "Thread safety margin is used on fixed-stack LinuxThreads (on " \
3368 "Linux/x86 only) to prevent heap-stack collision. Set to 0 to " \
3369 "disable this feature") \
3370 \
3371 /* code cache parameters */ \
3372 develop(uintx, CodeCacheSegmentSize, 64, \
3373 "Code cache segment size (in bytes) - smallest unit of " \
3374 "allocation") \
3375 \
3376 develop_pd(intx, CodeEntryAlignment, \
3377 "Code entry alignment for generated code (in bytes)") \
3378 \
3379 product_pd(intx, OptoLoopAlignment, \
3380 "Align inner loops to zero relative to this modulus") \
3381 \
3382 product_pd(uintx, InitialCodeCacheSize, \
3383 "Initial code cache size (in bytes)") \
3384 \
3385 product_pd(uintx, ReservedCodeCacheSize, \
3386 "Reserved code cache size (in bytes) - maximum code cache size") \
3387 \
3388 product(uintx, CodeCacheMinimumFreeSpace, 500*K, \
3389 "When less than X space left, we stop compiling.") \
3390 \
3391 product_pd(uintx, CodeCacheExpansionSize, \
3392 "Code cache expansion size (in bytes)") \
3393 \
3394 develop_pd(uintx, CodeCacheMinBlockLength, \
3395 "Minimum number of segments in a code cache block.") \
3396 \
3397 notproduct(bool, ExitOnFullCodeCache, false, \
3398 "Exit the VM if we fill the code cache.") \
3399 \
3400 product(bool, UseCodeCacheFlushing, true, \
3401 "Attempt to clean the code cache before shutting off compiler") \
3402 \
3403 product(intx, MinCodeCacheFlushingInterval, 30, \
3404 "Min number of seconds between code cache cleaning sessions") \
3405 \
3406 product(uintx, CodeCacheFlushingMinimumFreeSpace, 1500*K, \
3407 "When less than X space left, start code cache cleaning") \
3408 \
3409 /* interpreter debugging */ \
3410 develop(intx, BinarySwitchThreshold, 5, \
3411 "Minimal number of lookupswitch entries for rewriting to binary " \
3412 "switch") \
3413 \
3414 develop(intx, StopInterpreterAt, 0, \
3415 "Stops interpreter execution at specified bytecode number") \
3416 \
3417 develop(intx, TraceBytecodesAt, 0, \
3418 "Traces bytecodes starting with specified bytecode number") \
3419 \
3420 /* compiler interface */ \
3421 develop(intx, CIStart, 0, \
3422 "the id of the first compilation to permit") \
3423 \
3424 develop(intx, CIStop, -1, \
3425 "the id of the last compilation to permit") \
3426 \
3427 develop(intx, CIStartOSR, 0, \
3428 "the id of the first osr compilation to permit " \
3429 "(CICountOSR must be on)") \
3430 \
3431 develop(intx, CIStopOSR, -1, \
3432 "the id of the last osr compilation to permit " \
3433 "(CICountOSR must be on)") \
3434 \
3435 develop(intx, CIBreakAtOSR, -1, \
3436 "id of osr compilation to break at") \
3437 \
3438 develop(intx, CIBreakAt, -1, \
3439 "id of compilation to break at") \
3440 \
3441 product(ccstrlist, CompileOnly, "", \
3442 "List of methods (pkg/class.name) to restrict compilation to") \
3443 \
3444 product(ccstr, CompileCommandFile, NULL, \
3445 "Read compiler commands from this file [.hotspot_compiler]") \
3446 \
3447 product(ccstrlist, CompileCommand, "", \
3448 "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \
3449 \
3450 product(bool, CICompilerCountPerCPU, false, \
3451 "1 compiler thread for log(N CPUs)") \
3452 \
3453 develop(intx, CIFireOOMAt, -1, \
3454 "Fire OutOfMemoryErrors throughout CI for testing the compiler " \
3455 "(non-negative value throws OOM after this many CI accesses " \
3456 "in each compile)") \
3457 \
3458 develop(intx, CIFireOOMAtDelay, -1, \
3459 "Wait for this many CI accesses to occur in all compiles before " \
3460 "beginning to throw OutOfMemoryErrors in each compile") \
3461 \
3462 notproduct(bool, CIObjectFactoryVerify, false, \
3463 "enable potentially expensive verification in ciObjectFactory") \
3464 \
3465 /* Priorities */ \
3466 product_pd(bool, UseThreadPriorities, "Use native thread priorities") \
3467 \
3468 product(intx, ThreadPriorityPolicy, 0, \
3469 "0 : Normal. "\
3470 " VM chooses priorities that are appropriate for normal "\
3471 " applications. On Solaris NORM_PRIORITY and above are mapped "\
3472 " to normal native priority. Java priorities below NORM_PRIORITY"\
3473 " map to lower native priority values. On Windows applications"\
3474 " are allowed to use higher native priorities. However, with "\
3475 " ThreadPriorityPolicy=0, VM will not use the highest possible"\
3476 " native priority, THREAD_PRIORITY_TIME_CRITICAL, as it may "\
3477 " interfere with system threads. On Linux thread priorities "\
3478 " are ignored because the OS does not support static priority "\
3479 " in SCHED_OTHER scheduling class which is the only choice for"\
3480 " non-root, non-realtime applications. "\
3481 "1 : Aggressive. "\
3482 " Java thread priorities map over to the entire range of "\
3483 " native thread priorities. Higher Java thread priorities map "\
3484 " to higher native thread priorities. This policy should be "\
3485 " used with care, as sometimes it can cause performance "\
3486 " degradation in the application and/or the entire system. On "\
3487 " Linux this policy requires root privilege.") \
3488 \
3489 product(bool, ThreadPriorityVerbose, false, \
3490 "print priority changes") \
3491 \
3492 product(intx, DefaultThreadPriority, -1, \
3493 "what native priority threads run at if not specified elsewhere (-1 means no change)") \
3494 \
3495 product(intx, CompilerThreadPriority, -1, \
3496 "what priority should compiler threads run at (-1 means no change)") \
3497 \
3498 product(intx, VMThreadPriority, -1, \
3499 "what priority should VM threads run at (-1 means no change)") \
3500 \
3501 product(bool, CompilerThreadHintNoPreempt, true, \
3502 "(Solaris only) Give compiler threads an extra quanta") \
3503 \
3504 product(bool, VMThreadHintNoPreempt, false, \
3505 "(Solaris only) Give VM thread an extra quanta") \
3506 \
3507 product(intx, JavaPriority1_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3508 product(intx, JavaPriority2_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3509 product(intx, JavaPriority3_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3510 product(intx, JavaPriority4_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3511 product(intx, JavaPriority5_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3512 product(intx, JavaPriority6_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3513 product(intx, JavaPriority7_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3514 product(intx, JavaPriority8_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3515 product(intx, JavaPriority9_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3516 product(intx, JavaPriority10_To_OSPriority,-1, "Map Java priorities to OS priorities") \
3517 \
3518 /* compiler debugging */ \
3519 notproduct(intx, CompileTheWorldStartAt, 1, \
3520 "First class to consider when using +CompileTheWorld") \
3521 \
3522 notproduct(intx, CompileTheWorldStopAt, max_jint, \
3523 "Last class to consider when using +CompileTheWorld") \
3524 \
3525 develop(intx, NewCodeParameter, 0, \
3526 "Testing Only: Create a dedicated integer parameter before " \
3527 "putback") \
3528 \
3529 /* new oopmap storage allocation */ \
3530 develop(intx, MinOopMapAllocation, 8, \
3531 "Minimum number of OopMap entries in an OopMapSet") \
3532 \
3533 /* Background Compilation */ \
3534 develop(intx, LongCompileThreshold, 50, \
3535 "Used with +TraceLongCompiles") \
3536 \
3537 product(intx, StarvationMonitorInterval, 200, \
3538 "Pause between each check in ms") \
3539 \
3540 /* recompilation */ \
3541 product_pd(intx, CompileThreshold, \
3542 "number of interpreted method invocations before (re-)compiling") \
3543 \
3544 product_pd(intx, BackEdgeThreshold, \
3545 "Interpreter Back edge threshold at which an OSR compilation is invoked")\
3546 \
3547 product(intx, Tier0InvokeNotifyFreqLog, 7, \
3548 "Interpreter (tier 0) invocation notification frequency.") \
3549 \
3550 product(intx, Tier2InvokeNotifyFreqLog, 11, \
3551 "C1 without MDO (tier 2) invocation notification frequency.") \
3552 \
3553 product(intx, Tier3InvokeNotifyFreqLog, 10, \
3554 "C1 with MDO profiling (tier 3) invocation notification " \
3555 "frequency.") \
3556 \
3557 product(intx, Tier23InlineeNotifyFreqLog, 20, \
3558 "Inlinee invocation (tiers 2 and 3) notification frequency") \
3559 \
3560 product(intx, Tier0BackedgeNotifyFreqLog, 10, \
3561 "Interpreter (tier 0) invocation notification frequency.") \
3562 \
3563 product(intx, Tier2BackedgeNotifyFreqLog, 14, \
3564 "C1 without MDO (tier 2) invocation notification frequency.") \
3565 \
3566 product(intx, Tier3BackedgeNotifyFreqLog, 13, \
3567 "C1 with MDO profiling (tier 3) invocation notification " \
3568 "frequency.") \
3569 \
3570 product(intx, Tier2CompileThreshold, 0, \
3571 "threshold at which tier 2 compilation is invoked") \
3572 \
3573 product(intx, Tier2BackEdgeThreshold, 0, \
3574 "Back edge threshold at which tier 2 compilation is invoked") \
3575 \
3576 product(intx, Tier3InvocationThreshold, 200, \
3577 "Compile if number of method invocations crosses this " \
3578 "threshold") \
3579 \
3580 product(intx, Tier3MinInvocationThreshold, 100, \
3581 "Minimum invocation to compile at tier 3") \
3582 \
3583 product(intx, Tier3CompileThreshold, 2000, \
3584 "Threshold at which tier 3 compilation is invoked (invocation " \
3585 "minimum must be satisfied.") \
3586 \
3587 product(intx, Tier3BackEdgeThreshold, 60000, \
3588 "Back edge threshold at which tier 3 OSR compilation is invoked") \
3589 \
3590 product(intx, Tier4InvocationThreshold, 5000, \
3591 "Compile if number of method invocations crosses this " \
3592 "threshold") \
3593 \
3594 product(intx, Tier4MinInvocationThreshold, 600, \
3595 "Minimum invocation to compile at tier 4") \
3596 \
3597 product(intx, Tier4CompileThreshold, 15000, \
3598 "Threshold at which tier 4 compilation is invoked (invocation " \
3599 "minimum must be satisfied.") \
3600 \
3601 product(intx, Tier4BackEdgeThreshold, 40000, \
3602 "Back edge threshold at which tier 4 OSR compilation is invoked") \
3603 \
3604 product(intx, Tier3DelayOn, 5, \
3605 "If C2 queue size grows over this amount per compiler thread " \
3606 "stop compiling at tier 3 and start compiling at tier 2") \
3607 \
3608 product(intx, Tier3DelayOff, 2, \
3609 "If C2 queue size is less than this amount per compiler thread " \
3610 "allow methods compiled at tier 2 transition to tier 3") \
3611 \
3612 product(intx, Tier3LoadFeedback, 5, \
3613 "Tier 3 thresholds will increase twofold when C1 queue size " \
3614 "reaches this amount per compiler thread") \
3615 \
3616 product(intx, Tier4LoadFeedback, 3, \
3617 "Tier 4 thresholds will increase twofold when C2 queue size " \
3618 "reaches this amount per compiler thread") \
3619 \
3620 product(intx, TieredCompileTaskTimeout, 50, \
3621 "Kill compile task if method was not used within " \
3622 "given timeout in milliseconds") \
3623 \
3624 product(intx, TieredStopAtLevel, 4, \
3625 "Stop at given compilation level") \
3626 \
3627 product(intx, Tier0ProfilingStartPercentage, 200, \
3628 "Start profiling in interpreter if the counters exceed tier 3" \
3629 "thresholds by the specified percentage") \
3630 \
3631 product(intx, TieredRateUpdateMinTime, 1, \
3632 "Minimum rate sampling interval (in milliseconds)") \
3633 \
3634 product(intx, TieredRateUpdateMaxTime, 25, \
3635 "Maximum rate sampling interval (in milliseconds)") \
3636 \
3637 product_pd(bool, TieredCompilation, \
3638 "Enable tiered compilation") \
3639 \
3640 product(bool, PrintTieredEvents, false, \
3641 "Print tiered events notifications") \
3642 \
3643 product(bool, StressTieredRuntime, false, \
3644 "Alternate client and server compiler on compile requests") \
3645 \
3646 product_pd(intx, OnStackReplacePercentage, \
3647 "NON_TIERED number of method invocations/branches (expressed as %"\
3648 "of CompileThreshold) before (re-)compiling OSR code") \
3649 \
3650 product(intx, InterpreterProfilePercentage, 33, \
3651 "NON_TIERED number of method invocations/branches (expressed as %"\
3652 "of CompileThreshold) before profiling in the interpreter") \
3653 \
3654 develop(intx, MaxRecompilationSearchLength, 10, \
3655 "max. # frames to inspect searching for recompilee") \
3656 \
3657 develop(intx, MaxInterpretedSearchLength, 3, \
3658 "max. # interp. frames to skip when searching for recompilee") \
3659 \
3660 develop(intx, DesiredMethodLimit, 8000, \
3661 "desired max. method size (in bytecodes) after inlining") \
3662 \
3663 develop(intx, HugeMethodLimit, 8000, \
3664 "don't compile methods larger than this if " \
3665 "+DontCompileHugeMethods") \
3666 \
3667 /* New JDK 1.4 reflection implementation */ \
3668 \
3669 develop(bool, UseNewReflection, true, \
3670 "Temporary flag for transition to reflection based on dynamic " \
3671 "bytecode generation in 1.4; can no longer be turned off in 1.4 " \
3672 "JDK, and is unneeded in 1.3 JDK, but marks most places VM " \
3673 "changes were needed") \
3674 \
3675 develop(bool, VerifyReflectionBytecodes, false, \
3676 "Force verification of 1.4 reflection bytecodes. Does not work " \
3677 "in situations like that described in 4486457 or for " \
3678 "constructors generated for serialization, so can not be enabled "\
3679 "in product.") \
3680 \
3681 product(bool, ReflectionWrapResolutionErrors, true, \
3682 "Temporary flag for transition to AbstractMethodError wrapped " \
3683 "in InvocationTargetException. See 6531596") \
3684 \
3685 \
3686 develop(intx, FastSuperclassLimit, 8, \
3687 "Depth of hardwired instanceof accelerator array") \
3688 \
3689 /* Properties for Java libraries */ \
3690 \
3691 product(intx, MaxDirectMemorySize, -1, \
3692 "Maximum total size of NIO direct-buffer allocations") \
3693 \
3694 /* temporary developer defined flags */ \
3695 \
3696 diagnostic(bool, UseNewCode, false, \
3697 "Testing Only: Use the new version while testing") \
3698 \
3699 diagnostic(bool, UseNewCode2, false, \
3700 "Testing Only: Use the new version while testing") \
3701 \
3702 diagnostic(bool, UseNewCode3, false, \
3703 "Testing Only: Use the new version while testing") \
3704 \
3705 /* flags for performance data collection */ \
3706 \
3707 product(bool, UsePerfData, falseInEmbedded, \
3708 "Flag to disable jvmstat instrumentation for performance testing" \
3709 "and problem isolation purposes.") \
3710 \
3711 product(bool, PerfDataSaveToFile, false, \
3712 "Save PerfData memory to hsperfdata_<pid> file on exit") \
3713 \
3714 product(ccstr, PerfDataSaveFile, NULL, \
3715 "Save PerfData memory to the specified absolute pathname," \
3716 "%p in the file name if present will be replaced by pid") \
3717 \
3718 product(intx, PerfDataSamplingInterval, 50 /*ms*/, \
3719 "Data sampling interval in milliseconds") \
3720 \
3721 develop(bool, PerfTraceDataCreation, false, \
3722 "Trace creation of Performance Data Entries") \
3723 \
3724 develop(bool, PerfTraceMemOps, false, \
3725 "Trace PerfMemory create/attach/detach calls") \
3726 \
3727 product(bool, PerfDisableSharedMem, false, \
3728 "Store performance data in standard memory") \
3729 \
3730 product(intx, PerfDataMemorySize, 32*K, \
3731 "Size of performance data memory region. Will be rounded " \
3732 "up to a multiple of the native os page size.") \
3733 \
3734 product(intx, PerfMaxStringConstLength, 1024, \
3735 "Maximum PerfStringConstant string length before truncation") \
3736 \
3737 product(bool, PerfAllowAtExitRegistration, false, \
3738 "Allow registration of atexit() methods") \
3739 \
3740 product(bool, PerfBypassFileSystemCheck, false, \
3741 "Bypass Win32 file system criteria checks (Windows Only)") \
3742 \
3743 product(intx, UnguardOnExecutionViolation, 0, \
3744 "Unguard page and retry on no-execute fault (Win32 only)" \
3745 "0=off, 1=conservative, 2=aggressive") \
3746 \
3747 /* Serviceability Support */ \
3748 \
3749 product(bool, ManagementServer, false, \
3750 "Create JMX Management Server") \
3751 \
3752 product(bool, DisableAttachMechanism, false, \
3753 "Disable mechanism that allows tools to attach to this VM") \
3754 \
3755 product(bool, StartAttachListener, false, \
3756 "Always start Attach Listener at VM startup") \
3757 \
3758 manageable(bool, PrintConcurrentLocks, false, \
3759 "Print java.util.concurrent locks in thread dump") \
3760 \
3761 product(bool, TransmitErrorReport, false, \
3762 "Enable error report transmission on erroneous termination") \
3763 \
3764 product(ccstr, ErrorReportServer, NULL, \
3765 "Override built-in error report server address") \
3766 \
3767 /* Shared spaces */ \
3768 \
3769 product(bool, UseSharedSpaces, true, \
3770 "Use shared spaces in the permanent generation") \
3771 \
3772 product(bool, RequireSharedSpaces, false, \
3773 "Require shared spaces in the permanent generation") \
3774 \
3775 product(bool, DumpSharedSpaces, false, \
3776 "Special mode: JVM reads a class list, loads classes, builds " \
3777 "shared spaces, and dumps the shared spaces to a file to be " \
3778 "used in future JVM runs.") \
3779 \
3780 product(bool, PrintSharedSpaces, false, \
3781 "Print usage of shared spaces") \
3782 \
3783 product(uintx, SharedDummyBlockSize, 512*M, \
3784 "Size of dummy block used to shift heap addresses (in bytes)") \
3785 \
3786 product(uintx, SharedReadWriteSize, NOT_LP64(12*M) LP64_ONLY(13*M), \
3787 "Size of read-write space in permanent generation (in bytes)") \
3788 \
3789 product(uintx, SharedReadOnlySize, 10*M, \
3790 "Size of read-only space in permanent generation (in bytes)") \
3791 \
3792 product(uintx, SharedMiscDataSize, NOT_LP64(4*M) LP64_ONLY(5*M), \
3793 "Size of the shared data area adjacent to the heap (in bytes)") \
3794 \
3795 product(uintx, SharedMiscCodeSize, 4*M, \
3796 "Size of the shared code area adjacent to the heap (in bytes)") \
3797 \
3798 diagnostic(bool, SharedOptimizeColdStart, true, \
3799 "At dump time, order shared objects to achieve better " \
3800 "cold startup time.") \
3801 \
3802 develop(intx, SharedOptimizeColdStartPolicy, 2, \
3803 "Reordering policy for SharedOptimizeColdStart " \
3804 "0=favor classload-time locality, 1=balanced, " \
3805 "2=favor runtime locality") \
3806 \
3807 diagnostic(bool, SharedSkipVerify, false, \
3808 "Skip assert() and verify() which page-in unwanted shared " \
3809 "objects. ") \
3810 \
3811 diagnostic(bool, EnableInvokeDynamic, true, \
3812 "support JSR 292 (method handles, invokedynamic, " \
3813 "anonymous classes") \
3814 \
3815 product(bool, AnonymousClasses, false, \
3816 "support sun.misc.Unsafe.defineAnonymousClass (deprecated)") \
3817 \
3818 experimental(bool, EnableMethodHandles, false, \
3819 "support method handles (deprecated)") \
3820 \
3821 diagnostic(intx, MethodHandlePushLimit, 3, \
3822 "number of additional stack slots a method handle may push") \
3823 \
3824 diagnostic(bool, PrintMethodHandleStubs, false, \
3825 "Print generated stub code for method handles") \
3826 \
3827 develop(bool, TraceMethodHandles, false, \
3828 "trace internal method handle operations") \
3829 \
3830 diagnostic(bool, VerifyMethodHandles, trueInDebug, \
3831 "perform extra checks when constructing method handles") \
3832 \
3833 diagnostic(bool, OptimizeMethodHandles, true, \
3834 "when constructing method handles, try to improve them") \
3835 \
3836 develop(bool, StressMethodHandleWalk, false, \
3837 "Process all method handles with MethodHandleWalk") \
3838 \
3839 experimental(bool, TrustFinalNonStaticFields, false, \
3840 "trust final non-static declarations for constant folding") \
3841 \
3842 experimental(bool, AllowInvokeGeneric, false, \
3843 "accept MethodHandle.invoke and MethodHandle.invokeGeneric " \
3844 "as equivalent methods") \
3845 \
3846 develop(bool, TraceInvokeDynamic, false, \
3847 "trace internal invoke dynamic operations") \
3848 \
3849 diagnostic(bool, PauseAtStartup, false, \
3850 "Causes the VM to pause at startup time and wait for the pause " \
3851 "file to be removed (default: ./vm.paused.<pid>)") \
3852 \
3853 diagnostic(ccstr, PauseAtStartupFile, NULL, \
3854 "The file to create and for whose removal to await when pausing " \
3855 "at startup. (default: ./vm.paused.<pid>)") \
3856 \
3857 diagnostic(bool, PauseAtExit, false, \
3858 "Pause and wait for keypress on exit if a debugger is attached") \
3859 \
3860 product(bool, ExtendedDTraceProbes, false, \
3861 "Enable performance-impacting dtrace probes") \
3862 \
3863 product(bool, DTraceMethodProbes, false, \
3864 "Enable dtrace probes for method-entry and method-exit") \
3865 \
3866 product(bool, DTraceAllocProbes, false, \
3867 "Enable dtrace probes for object allocation") \
3868 \
3869 product(bool, DTraceMonitorProbes, false, \
3870 "Enable dtrace probes for monitor events") \
3871 \
3872 product(bool, RelaxAccessControlCheck, false, \
3873 "Relax the access control checks in the verifier") \
3874 \
3875 diagnostic(bool, PrintDTraceDOF, false, \
3876 "Print the DTrace DOF passed to the system for JSDT probes") \
3877 \
3878 product(uintx, StringTableSize, 1009, \
3879 "Number of buckets in the interned String table") \
3880 \
3881 product(bool, UseVMInterruptibleIO, false, \
3882 "(Unstable, Solaris-specific) Thread interrupt before or with " \
3883 "EINTR for I/O operations results in OS_INTRPT. The default value"\
3884 " of this flag is true for JDK 6 and earliers")
3886 /*
3887 * Macros for factoring of globals
3888 */
3890 // Interface macros
3891 #define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name;
3892 #define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name;
3893 #define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name;
3894 #define DECLARE_EXPERIMENTAL_FLAG(type, name, value, doc) extern "C" type name;
3895 #define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name;
3896 #define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name;
3897 #ifdef PRODUCT
3898 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) const type name = value;
3899 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) const type name = pd_##name;
3900 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc)
3901 #else
3902 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name;
3903 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name;
3904 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name;
3905 #endif
3906 // Special LP64 flags, product only needed for now.
3907 #ifdef _LP64
3908 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) extern "C" type name;
3909 #else
3910 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) const type name = value;
3911 #endif // _LP64
3913 // Implementation macros
3914 #define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value;
3915 #define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name;
3916 #define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value;
3917 #define MATERIALIZE_EXPERIMENTAL_FLAG(type, name, value, doc) type name = value;
3918 #define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value;
3919 #define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value;
3920 #ifdef PRODUCT
3921 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) /* flag name is constant */
3922 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) /* flag name is constant */
3923 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc)
3924 #else
3925 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value;
3926 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name;
3927 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value;
3928 #endif
3929 #ifdef _LP64
3930 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) type name = value;
3931 #else
3932 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) /* flag is constant */
3933 #endif // _LP64
3935 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)
3937 RUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG)
3939 // Extensions
3941 #include "runtime/globals_ext.hpp"
3943 #endif // SHARE_VM_RUNTIME_GLOBALS_HPP
