1 /*
2 * Copyright 1997-2009 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 #if !defined(COMPILER1) && !defined(COMPILER2)
26 define_pd_global(bool, BackgroundCompilation, false);
27 define_pd_global(bool, UseTLAB, false);
28 define_pd_global(bool, CICompileOSR, false);
29 define_pd_global(bool, UseTypeProfile, false);
30 define_pd_global(bool, UseOnStackReplacement, false);
31 define_pd_global(bool, InlineIntrinsics, false);
32 define_pd_global(bool, PreferInterpreterNativeStubs, true);
33 define_pd_global(bool, ProfileInterpreter, false);
34 define_pd_global(bool, ProfileTraps, false);
35 define_pd_global(bool, TieredCompilation, false);
36
37 define_pd_global(intx, CompileThreshold, 0);
38 define_pd_global(intx, Tier2CompileThreshold, 0);
39 define_pd_global(intx, Tier3CompileThreshold, 0);
40 define_pd_global(intx, Tier4CompileThreshold, 0);
41
42 define_pd_global(intx, BackEdgeThreshold, 0);
43 define_pd_global(intx, Tier2BackEdgeThreshold, 0);
44 define_pd_global(intx, Tier3BackEdgeThreshold, 0);
45 define_pd_global(intx, Tier4BackEdgeThreshold, 0);
46
47 define_pd_global(intx, OnStackReplacePercentage, 0);
48 define_pd_global(bool, ResizeTLAB, false);
49 define_pd_global(intx, FreqInlineSize, 0);
50 define_pd_global(intx, NewSizeThreadIncrease, 4*K);
51 define_pd_global(intx, NewRatio, 4);
52 define_pd_global(intx, InlineClassNatives, true);
53 define_pd_global(intx, InlineUnsafeOps, true);
54 define_pd_global(intx, InitialCodeCacheSize, 160*K);
55 define_pd_global(intx, ReservedCodeCacheSize, 32*M);
56 define_pd_global(intx, CodeCacheExpansionSize, 32*K);
57 define_pd_global(intx, CodeCacheMinBlockLength, 1);
58 define_pd_global(uintx,PermSize, ScaleForWordSize(4*M));
59 define_pd_global(uintx,MaxPermSize, ScaleForWordSize(64*M));
60 define_pd_global(bool, NeverActAsServerClassMachine, true);
61 define_pd_global(uintx, DefaultMaxRAM, 1*G);
62 #define CI_COMPILER_COUNT 0
63 #else
64
65 #ifdef COMPILER2
66 #define CI_COMPILER_COUNT 2
67 #else
68 #define CI_COMPILER_COUNT 1
69 #endif // COMPILER2
70
71 #endif // no compilers
72
73
74 // string type aliases used only in this file
75 typedef const char* ccstr;
76 typedef const char* ccstrlist; // represents string arguments which accumulate
77
78 enum FlagValueOrigin {
79 DEFAULT = 0,
80 COMMAND_LINE = 1,
81 ENVIRON_VAR = 2,
82 CONFIG_FILE = 3,
83 MANAGEMENT = 4,
84 ERGONOMIC = 5,
85 ATTACH_ON_DEMAND = 6,
86 INTERNAL = 99
87 };
88
89 struct Flag {
90 const char *type;
91 const char *name;
92 void* addr;
93 const char *kind;
94 FlagValueOrigin origin;
95
96 // points to all Flags static array
97 static Flag *flags;
98
99 // number of flags
100 static size_t numFlags;
101
102 static Flag* find_flag(char* name, size_t length);
103
104 bool is_bool() const { return strcmp(type, "bool") == 0; }
105 bool get_bool() const { return *((bool*) addr); }
106 void set_bool(bool value) { *((bool*) addr) = value; }
107
108 bool is_intx() const { return strcmp(type, "intx") == 0; }
109 intx get_intx() const { return *((intx*) addr); }
110 void set_intx(intx value) { *((intx*) addr) = value; }
111
112 bool is_uintx() const { return strcmp(type, "uintx") == 0; }
113 uintx get_uintx() const { return *((uintx*) addr); }
114 void set_uintx(uintx value) { *((uintx*) addr) = value; }
115
116 bool is_double() const { return strcmp(type, "double") == 0; }
117 double get_double() const { return *((double*) addr); }
118 void set_double(double value) { *((double*) addr) = value; }
119
120 bool is_ccstr() const { return strcmp(type, "ccstr") == 0 || strcmp(type, "ccstrlist") == 0; }
121 bool ccstr_accumulates() const { return strcmp(type, "ccstrlist") == 0; }
122 ccstr get_ccstr() const { return *((ccstr*) addr); }
123 void set_ccstr(ccstr value) { *((ccstr*) addr) = value; }
124
125 bool is_unlocker() const;
126 bool is_unlocked() const;
127 bool is_writeable() const;
128 bool is_external() const;
129
130 void print_on(outputStream* st);
131 void print_as_flag(outputStream* st);
132 };
133
134 // debug flags control various aspects of the VM and are global accessible
135
136 // use FlagSetting to temporarily change some debug flag
137 // e.g. FlagSetting fs(DebugThisAndThat, true);
138 // restored to previous value upon leaving scope
139 class FlagSetting {
140 bool val;
141 bool* flag;
142 public:
143 FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; }
144 ~FlagSetting() { *flag = val; }
145 };
146
147
148 class CounterSetting {
149 intx* counter;
150 public:
151 CounterSetting(intx* cnt) { counter = cnt; (*counter)++; }
152 ~CounterSetting() { (*counter)--; }
153 };
154
155
156 class IntFlagSetting {
157 intx val;
158 intx* flag;
159 public:
160 IntFlagSetting(intx& fl, intx newValue) { flag = &fl; val = fl; fl = newValue; }
161 ~IntFlagSetting() { *flag = val; }
162 };
163
164
165 class DoubleFlagSetting {
166 double val;
167 double* flag;
168 public:
169 DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; }
170 ~DoubleFlagSetting() { *flag = val; }
171 };
172
173
174 class CommandLineFlags {
175 public:
176 static bool boolAt(char* name, size_t len, bool* value);
177 static bool boolAt(char* name, bool* value) { return boolAt(name, strlen(name), value); }
178 static bool boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin);
179 static bool boolAtPut(char* name, bool* value, FlagValueOrigin origin) { return boolAtPut(name, strlen(name), value, origin); }
180
181 static bool intxAt(char* name, size_t len, intx* value);
182 static bool intxAt(char* name, intx* value) { return intxAt(name, strlen(name), value); }
183 static bool intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin);
184 static bool intxAtPut(char* name, intx* value, FlagValueOrigin origin) { return intxAtPut(name, strlen(name), value, origin); }
185
186 static bool uintxAt(char* name, size_t len, uintx* value);
187 static bool uintxAt(char* name, uintx* value) { return uintxAt(name, strlen(name), value); }
188 static bool uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin);
189 static bool uintxAtPut(char* name, uintx* value, FlagValueOrigin origin) { return uintxAtPut(name, strlen(name), value, origin); }
190
191 static bool doubleAt(char* name, size_t len, double* value);
192 static bool doubleAt(char* name, double* value) { return doubleAt(name, strlen(name), value); }
193 static bool doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin);
194 static bool doubleAtPut(char* name, double* value, FlagValueOrigin origin) { return doubleAtPut(name, strlen(name), value, origin); }
195
196 static bool ccstrAt(char* name, size_t len, ccstr* value);
197 static bool ccstrAt(char* name, ccstr* value) { return ccstrAt(name, strlen(name), value); }
198 static bool ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin);
199 static bool ccstrAtPut(char* name, ccstr* value, FlagValueOrigin origin) { return ccstrAtPut(name, strlen(name), value, origin); }
200
201 // Returns false if name is not a command line flag.
202 static bool wasSetOnCmdline(const char* name, bool* value);
203 static void printSetFlags();
204
205 static void printFlags() PRODUCT_RETURN;
206
207 static void verify() PRODUCT_RETURN;
208 };
209
210 // use this for flags that are true by default in the debug version but
211 // false in the optimized version, and vice versa
212 #ifdef ASSERT
213 #define trueInDebug true
214 #define falseInDebug false
215 #else
216 #define trueInDebug false
217 #define falseInDebug true
218 #endif
219
220 // use this for flags that are true per default in the product build
221 // but false in development builds, and vice versa
222 #ifdef PRODUCT
223 #define trueInProduct true
224 #define falseInProduct false
225 #else
226 #define trueInProduct false
227 #define falseInProduct true
228 #endif
229
230 // use this for flags that are true per default in the tiered build
231 // but false in non-tiered builds, and vice versa
232 #ifdef TIERED
233 #define trueInTiered true
234 #define falseInTiered false
235 #else
236 #define trueInTiered false
237 #define falseInTiered true
238 #endif
239
240 // develop flags are settable / visible only during development and are constant in the PRODUCT version
241 // product flags are always settable / visible
242 // notproduct flags are settable / visible only during development and are not declared in the PRODUCT version
243
244 // A flag must be declared with one of the following types:
245 // bool, intx, uintx, ccstr.
246 // The type "ccstr" is an alias for "const char*" and is used
247 // only in this file, because the macrology requires single-token type names.
248
249 // Note: Diagnostic options not meant for VM tuning or for product modes.
250 // They are to be used for VM quality assurance or field diagnosis
251 // of VM bugs. They are hidden so that users will not be encouraged to
252 // try them as if they were VM ordinary execution options. However, they
253 // are available in the product version of the VM. Under instruction
254 // from support engineers, VM customers can turn them on to collect
255 // diagnostic information about VM problems. To use a VM diagnostic
256 // option, you must first specify +UnlockDiagnosticVMOptions.
257 // (This master switch also affects the behavior of -Xprintflags.)
258 //
259 // experimental flags are in support of features that are not
260 // part of the officially supported product, but are available
261 // for experimenting with. They could, for example, be performance
262 // features that may not have undergone full or rigorous QA, but which may
263 // help performance in some cases and released for experimentation
264 // by the community of users and developers. This flag also allows one to
265 // be able to build a fully supported product that nonetheless also
266 // ships with some unsupported, lightly tested, experimental features.
267 // Like the UnlockDiagnosticVMOptions flag above, there is a corresponding
268 // UnlockExperimentalVMOptions flag, which allows the control and
269 // modification of the experimental flags.
270 //
271 // manageable flags are writeable external product flags.
272 // They are dynamically writeable through the JDK management interface
273 // (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole.
274 // These flags are external exported interface (see CCC). The list of
275 // manageable flags can be queried programmatically through the management
276 // interface.
277 //
278 // A flag can be made as "manageable" only if
279 // - the flag is defined in a CCC as an external exported interface.
280 // - the VM implementation supports dynamic setting of the flag.
281 // This implies that the VM must *always* query the flag variable
282 // and not reuse state related to the flag state at any given time.
283 // - you want the flag to be queried programmatically by the customers.
284 //
285 // product_rw flags are writeable internal product flags.
286 // They are like "manageable" flags but for internal/private use.
287 // The list of product_rw flags are internal/private flags which
288 // may be changed/removed in a future release. It can be set
289 // through the management interface to get/set value
290 // when the name of flag is supplied.
291 //
292 // A flag can be made as "product_rw" only if
293 // - the VM implementation supports dynamic setting of the flag.
294 // This implies that the VM must *always* query the flag variable
295 // and not reuse state related to the flag state at any given time.
296 //
297 // Note that when there is a need to support develop flags to be writeable,
298 // it can be done in the same way as product_rw.
299
300 #define RUNTIME_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw, lp64_product) \
301 \
302 lp64_product(bool, UseCompressedOops, false, \
303 "Use 32-bit object references in 64-bit VM. " \
304 "lp64_product means flag is always constant in 32 bit VM") \
305 \
306 notproduct(bool, CheckCompressedOops, true, \
307 "generate checks in encoding/decoding code in debug VM") \
308 \
309 product_pd(uintx, HeapBaseMinAddress, \
310 "OS specific low limit for heap base address") \
311 \
312 diagnostic(bool, PrintCompressedOopsMode, false, \
313 "Print compressed oops base address and encoding mode") \
314 \
315 /* UseMembar is theoretically a temp flag used for memory barrier \
316 * removal testing. It was supposed to be removed before FCS but has \
317 * been re-added (see 6401008) */ \
318 product(bool, UseMembar, false, \
319 "(Unstable) Issues membars on thread state transitions") \
320 \
321 product(bool, PrintCommandLineFlags, false, \
322 "Prints flags that appeared on the command line") \
323 \
324 diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \
325 "Enable normal processing of flags relating to field diagnostics")\
326 \
327 experimental(bool, UnlockExperimentalVMOptions, false, \
328 "Enable normal processing of flags relating to experimental features")\
329 \
330 product(bool, JavaMonitorsInStackTrace, true, \
331 "Print info. about Java monitor locks when the stacks are dumped")\
332 \
333 product_pd(bool, UseLargePages, \
334 "Use large page memory") \
335 \
336 product_pd(bool, UseLargePagesIndividualAllocation, \
337 "Allocate large pages individually for better affinity") \
338 \
339 develop(bool, LargePagesIndividualAllocationInjectError, false, \
340 "Fail large pages individual allocation") \
341 \
342 develop(bool, TracePageSizes, false, \
343 "Trace page size selection and usage.") \
344 \
345 product(bool, UseNUMA, false, \
346 "Use NUMA if available") \
347 \
348 product(bool, ForceNUMA, false, \
349 "Force NUMA optimizations on single-node/UMA systems") \
350 \
351 product(intx, NUMAChunkResizeWeight, 20, \
352 "Percentage (0-100) used to weight the current sample when " \
353 "computing exponentially decaying average for " \
354 "AdaptiveNUMAChunkSizing") \
355 \
356 product(intx, NUMASpaceResizeRate, 1*G, \
357 "Do not reallocate more that this amount per collection") \
358 \
359 product(bool, UseAdaptiveNUMAChunkSizing, true, \
360 "Enable adaptive chunk sizing for NUMA") \
361 \
362 product(bool, NUMAStats, false, \
363 "Print NUMA stats in detailed heap information") \
364 \
365 product(intx, NUMAPageScanRate, 256, \
366 "Maximum number of pages to include in the page scan procedure") \
367 \
368 product_pd(bool, NeedsDeoptSuspend, \
369 "True for register window machines (sparc/ia64)") \
370 \
371 product(intx, UseSSE, 99, \
372 "Highest supported SSE instructions set on x86/x64") \
373 \
374 product(uintx, LargePageSizeInBytes, 0, \
375 "Large page size (0 to let VM choose the page size") \
376 \
377 product(uintx, LargePageHeapSizeThreshold, 128*M, \
378 "Use large pages if max heap is at least this big") \
379 \
380 product(bool, ForceTimeHighResolution, false, \
381 "Using high time resolution(For Win32 only)") \
382 \
383 develop(bool, TraceItables, false, \
384 "Trace initialization and use of itables") \
385 \
386 develop(bool, TracePcPatching, false, \
387 "Trace usage of frame::patch_pc") \
388 \
389 develop(bool, TraceJumps, false, \
390 "Trace assembly jumps in thread ring buffer") \
391 \
392 develop(bool, TraceRelocator, false, \
393 "Trace the bytecode relocator") \
394 \
395 develop(bool, TraceLongCompiles, false, \
396 "Print out every time compilation is longer than " \
397 "a given threashold") \
398 \
399 develop(bool, SafepointALot, false, \
400 "Generates a lot of safepoints. Works with " \
401 "GuaranteedSafepointInterval") \
402 \
403 product_pd(bool, BackgroundCompilation, \
404 "A thread requesting compilation is not blocked during " \
405 "compilation") \
406 \
407 product(bool, PrintVMQWaitTime, false, \
408 "Prints out the waiting time in VM operation queue") \
409 \
410 develop(bool, BailoutToInterpreterForThrows, false, \
411 "Compiled methods which throws/catches exceptions will be " \
412 "deopt and intp.") \
413 \
414 develop(bool, NoYieldsInMicrolock, false, \
415 "Disable yields in microlock") \
416 \
417 develop(bool, TraceOopMapGeneration, false, \
418 "Shows oopmap generation") \
419 \
420 product(bool, MethodFlushing, true, \
421 "Reclamation of zombie and not-entrant methods") \
422 \
423 develop(bool, VerifyStack, false, \
424 "Verify stack of each thread when it is entering a runtime call") \
425 \
426 develop(bool, ForceUnreachable, false, \
427 "(amd64) Make all non code cache addresses to be unreachable with rip-rel forcing use of 64bit literal fixups") \
428 \
429 notproduct(bool, StressDerivedPointers, false, \
430 "Force scavenge when a derived pointers is detected on stack " \
431 "after rtm call") \
432 \
433 develop(bool, TraceDerivedPointers, false, \
434 "Trace traversal of derived pointers on stack") \
435 \
436 notproduct(bool, TraceCodeBlobStacks, false, \
437 "Trace stack-walk of codeblobs") \
438 \
439 product(bool, PrintJNIResolving, false, \
440 "Used to implement -v:jni") \
441 \
442 notproduct(bool, PrintRewrites, false, \
443 "Print methods that are being rewritten") \
444 \
445 product(bool, UseInlineCaches, true, \
446 "Use Inline Caches for virtual calls ") \
447 \
448 develop(bool, InlineArrayCopy, true, \
449 "inline arraycopy native that is known to be part of " \
450 "base library DLL") \
451 \
452 develop(bool, InlineObjectHash, true, \
453 "inline Object::hashCode() native that is known to be part " \
454 "of base library DLL") \
455 \
456 develop(bool, InlineObjectCopy, true, \
457 "inline Object.clone and Arrays.copyOf[Range] intrinsics") \
458 \
459 develop(bool, InlineNatives, true, \
460 "inline natives that are known to be part of base library DLL") \
461 \
462 develop(bool, InlineMathNatives, true, \
463 "inline SinD, CosD, etc.") \
464 \
465 develop(bool, InlineClassNatives, true, \
466 "inline Class.isInstance, etc") \
467 \
468 develop(bool, InlineAtomicLong, true, \
469 "inline sun.misc.AtomicLong") \
470 \
471 develop(bool, InlineThreadNatives, true, \
472 "inline Thread.currentThread, etc") \
473 \
474 develop(bool, InlineReflectionGetCallerClass, true, \
475 "inline sun.reflect.Reflection.getCallerClass(), known to be part "\
476 "of base library DLL") \
477 \
478 develop(bool, InlineUnsafeOps, true, \
479 "inline memory ops (native methods) from sun.misc.Unsafe") \
480 \
481 develop(bool, ConvertCmpD2CmpF, true, \
482 "Convert cmpD to cmpF when one input is constant in float range") \
483 \
484 develop(bool, ConvertFloat2IntClipping, true, \
485 "Convert float2int clipping idiom to integer clipping") \
486 \
487 develop(bool, SpecialStringCompareTo, true, \
488 "special version of string compareTo") \
489 \
490 develop(bool, SpecialStringIndexOf, true, \
491 "special version of string indexOf") \
492 \
493 develop(bool, SpecialStringEquals, true, \
494 "special version of string equals") \
495 \
496 develop(bool, SpecialArraysEquals, true, \
497 "special version of Arrays.equals(char[],char[])") \
498 \
499 product(bool, UseSSE42Intrinsics, false, \
500 "SSE4.2 versions of intrinsics") \
501 \
502 develop(bool, TraceCallFixup, false, \
503 "traces all call fixups") \
504 \
505 develop(bool, DeoptimizeALot, false, \
506 "deoptimize at every exit from the runtime system") \
507 \
508 notproduct(ccstrlist, DeoptimizeOnlyAt, "", \
509 "a comma separated list of bcis to deoptimize at") \
510 \
511 product(bool, DeoptimizeRandom, false, \
512 "deoptimize random frames on random exit from the runtime system")\
513 \
514 notproduct(bool, ZombieALot, false, \
515 "creates zombies (non-entrant) at exit from the runt. system") \
516 \
517 notproduct(bool, WalkStackALot, false, \
518 "trace stack (no print) at every exit from the runtime system") \
519 \
520 develop(bool, Debugging, false, \
521 "set when executing debug methods in debug.ccp " \
522 "(to prevent triggering assertions)") \
523 \
524 notproduct(bool, StrictSafepointChecks, trueInDebug, \
525 "Enable strict checks that safepoints cannot happen for threads " \
526 "that used No_Safepoint_Verifier") \
527 \
528 notproduct(bool, VerifyLastFrame, false, \
529 "Verify oops on last frame on entry to VM") \
530 \
531 develop(bool, TraceHandleAllocation, false, \
532 "Prints out warnings when suspicious many handles are allocated") \
533 \
534 product(bool, UseCompilerSafepoints, true, \
535 "Stop at safepoints in compiled code") \
536 \
537 product(bool, UseSplitVerifier, true, \
538 "use split verifier with StackMapTable attributes") \
539 \
540 product(bool, FailOverToOldVerifier, true, \
541 "fail over to old verifier when split verifier fails") \
542 \
543 develop(bool, ShowSafepointMsgs, false, \
544 "Show msg. about safepoint synch.") \
545 \
546 product(bool, SafepointTimeout, false, \
547 "Time out and warn or fail after SafepointTimeoutDelay " \
548 "milliseconds if failed to reach safepoint") \
549 \
550 develop(bool, DieOnSafepointTimeout, false, \
551 "Die upon failure to reach safepoint (see SafepointTimeout)") \
552 \
553 /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \
554 /* typically, at most a few retries are needed */ \
555 product(intx, SuspendRetryCount, 50, \
556 "Maximum retry count for an external suspend request") \
557 \
558 product(intx, SuspendRetryDelay, 5, \
559 "Milliseconds to delay per retry (* current_retry_count)") \
560 \
561 product(bool, AssertOnSuspendWaitFailure, false, \
562 "Assert/Guarantee on external suspend wait failure") \
563 \
564 product(bool, TraceSuspendWaitFailures, false, \
565 "Trace external suspend wait failures") \
566 \
567 product(bool, MaxFDLimit, true, \
568 "Bump the number of file descriptors to max in solaris.") \
569 \
570 notproduct(bool, LogEvents, trueInDebug, \
571 "Enable Event log") \
572 \
573 product(bool, BytecodeVerificationRemote, true, \
574 "Enables the Java bytecode verifier for remote classes") \
575 \
576 product(bool, BytecodeVerificationLocal, false, \
577 "Enables the Java bytecode verifier for local classes") \
578 \
579 develop(bool, ForceFloatExceptions, trueInDebug, \
580 "Force exceptions on FP stack under/overflow") \
581 \
582 develop(bool, SoftMatchFailure, trueInProduct, \
583 "If the DFA fails to match a node, print a message and bail out") \
584 \
585 develop(bool, VerifyStackAtCalls, false, \
586 "Verify that the stack pointer is unchanged after calls") \
587 \
588 develop(bool, TraceJavaAssertions, false, \
589 "Trace java language assertions") \
590 \
591 notproduct(bool, CheckAssertionStatusDirectives, false, \
592 "temporary - see javaClasses.cpp") \
593 \
594 notproduct(bool, PrintMallocFree, false, \
595 "Trace calls to C heap malloc/free allocation") \
596 \
597 notproduct(bool, PrintOopAddress, false, \
598 "Always print the location of the oop") \
599 \
600 notproduct(bool, VerifyCodeCacheOften, false, \
601 "Verify compiled-code cache often") \
602 \
603 develop(bool, ZapDeadCompiledLocals, false, \
604 "Zap dead locals in compiler frames") \
605 \
606 notproduct(bool, ZapDeadLocalsOld, false, \
607 "Zap dead locals (old version, zaps all frames when " \
608 "entering the VM") \
609 \
610 notproduct(bool, CheckOopishValues, false, \
611 "Warn if value contains oop ( requires ZapDeadLocals)") \
612 \
613 develop(bool, UseMallocOnly, false, \
614 "use only malloc/free for allocation (no resource area/arena)") \
615 \
616 develop(bool, PrintMalloc, false, \
617 "print all malloc/free calls") \
618 \
619 develop(bool, ZapResourceArea, trueInDebug, \
620 "Zap freed resource/arena space with 0xABABABAB") \
621 \
622 notproduct(bool, ZapVMHandleArea, trueInDebug, \
623 "Zap freed VM handle space with 0xBCBCBCBC") \
624 \
625 develop(bool, ZapJNIHandleArea, trueInDebug, \
626 "Zap freed JNI handle space with 0xFEFEFEFE") \
627 \
628 develop(bool, ZapUnusedHeapArea, trueInDebug, \
629 "Zap unused heap space with 0xBAADBABE") \
630 \
631 develop(bool, TraceZapUnusedHeapArea, false, \
632 "Trace zapping of unused heap space") \
633 \
634 develop(bool, CheckZapUnusedHeapArea, false, \
635 "Check zapping of unused heap space") \
636 \
637 develop(bool, ZapFillerObjects, trueInDebug, \
638 "Zap filler objects with 0xDEAFBABE") \
639 \
640 develop(bool, PrintVMMessages, true, \
641 "Print vm messages on console") \
642 \
643 product(bool, PrintGCApplicationConcurrentTime, false, \
644 "Print the time the application has been running") \
645 \
646 product(bool, PrintGCApplicationStoppedTime, false, \
647 "Print the time the application has been stopped") \
648 \
649 develop(bool, Verbose, false, \
650 "Prints additional debugging information from other modes") \
651 \
652 develop(bool, PrintMiscellaneous, false, \
653 "Prints uncategorized debugging information (requires +Verbose)") \
654 \
655 develop(bool, WizardMode, false, \
656 "Prints much more debugging information") \
657 \
658 product(bool, ShowMessageBoxOnError, false, \
659 "Keep process alive on VM fatal error") \
660 \
661 product_pd(bool, UseOSErrorReporting, \
662 "Let VM fatal error propagate to the OS (ie. WER on Windows)") \
663 \
664 product(bool, SuppressFatalErrorMessage, false, \
665 "Do NO Fatal Error report [Avoid deadlock]") \
666 \
667 product(ccstrlist, OnError, "", \
668 "Run user-defined commands on fatal error; see VMError.cpp " \
669 "for examples") \
670 \
671 product(ccstrlist, OnOutOfMemoryError, "", \
672 "Run user-defined commands on first java.lang.OutOfMemoryError") \
673 \
674 manageable(bool, HeapDumpBeforeFullGC, false, \
675 "Dump heap to file before any major stop-world GC") \
676 \
677 manageable(bool, HeapDumpAfterFullGC, false, \
678 "Dump heap to file after any major stop-world GC") \
679 \
680 manageable(bool, HeapDumpOnOutOfMemoryError, false, \
681 "Dump heap to file when java.lang.OutOfMemoryError is thrown") \
682 \
683 manageable(ccstr, HeapDumpPath, NULL, \
684 "When HeapDumpOnOutOfMemoryError is on, the path (filename or" \
685 "directory) of the dump file (defaults to java_pid<pid>.hprof" \
686 "in the working directory)") \
687 \
688 develop(uintx, SegmentedHeapDumpThreshold, 2*G, \
689 "Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) " \
690 "when the heap usage is larger than this") \
691 \
692 develop(uintx, HeapDumpSegmentSize, 1*G, \
693 "Approximate segment size when generating a segmented heap dump") \
694 \
695 develop(bool, BreakAtWarning, false, \
696 "Execute breakpoint upon encountering VM warning") \
697 \
698 product_pd(bool, UseVectoredExceptions, \
699 "Temp Flag - Use Vectored Exceptions rather than SEH (Windows Only)") \
700 \
701 develop(bool, TraceVMOperation, false, \
702 "Trace vm operations") \
703 \
704 develop(bool, UseFakeTimers, false, \
705 "Tells whether the VM should use system time or a fake timer") \
706 \
707 diagnostic(bool, LogCompilation, false, \
708 "Log compilation activity in detail to hotspot.log or LogFile") \
709 \
710 product(bool, PrintCompilation, false, \
711 "Print compilations") \
712 \
713 diagnostic(bool, TraceNMethodInstalls, false, \
714 "Trace nmethod intallation") \
715 \
716 diagnostic(bool, TraceOSRBreakpoint, false, \
717 "Trace OSR Breakpoint ") \
718 \
719 diagnostic(bool, TraceCompileTriggered, false, \
720 "Trace compile triggered") \
721 \
722 diagnostic(bool, TraceTriggers, false, \
723 "Trace triggers") \
724 \
725 product(bool, AlwaysRestoreFPU, false, \
726 "Restore the FPU control word after every JNI call (expensive)") \
727 \
728 notproduct(bool, PrintCompilation2, false, \
729 "Print additional statistics per compilation") \
730 \
731 diagnostic(bool, PrintAdapterHandlers, false, \
732 "Print code generated for i2c/c2i adapters") \
733 \
734 diagnostic(bool, PrintAssembly, false, \
735 "Print assembly code (using external disassembler.so)") \
736 \
737 diagnostic(ccstr, PrintAssemblyOptions, NULL, \
738 "Options string passed to disassembler.so") \
739 \
740 diagnostic(bool, PrintNMethods, false, \
741 "Print assembly code for nmethods when generated") \
742 \
743 diagnostic(bool, PrintNativeNMethods, false, \
744 "Print assembly code for native nmethods when generated") \
745 \
746 develop(bool, PrintDebugInfo, false, \
747 "Print debug information for all nmethods when generated") \
748 \
749 develop(bool, PrintRelocations, false, \
750 "Print relocation information for all nmethods when generated") \
751 \
752 develop(bool, PrintDependencies, false, \
753 "Print dependency information for all nmethods when generated") \
754 \
755 develop(bool, PrintExceptionHandlers, false, \
756 "Print exception handler tables for all nmethods when generated") \
757 \
758 develop(bool, InterceptOSException, false, \
759 "Starts debugger when an implicit OS (e.g., NULL) " \
760 "exception happens") \
761 \
762 notproduct(bool, PrintCodeCache, false, \
763 "Print the compiled_code cache when exiting") \
764 \
765 develop(bool, PrintCodeCache2, false, \
766 "Print detailed info on the compiled_code cache when exiting") \
767 \
768 diagnostic(bool, PrintStubCode, false, \
769 "Print generated stub code") \
770 \
771 product(bool, StackTraceInThrowable, true, \
772 "Collect backtrace in throwable when exception happens") \
773 \
774 product(bool, OmitStackTraceInFastThrow, true, \
775 "Omit backtraces for some 'hot' exceptions in optimized code") \
776 \
777 product(bool, ProfilerPrintByteCodeStatistics, false, \
778 "Prints byte code statictics when dumping profiler output") \
779 \
780 product(bool, ProfilerRecordPC, false, \
781 "Collects tick for each 16 byte interval of compiled code") \
782 \
783 product(bool, ProfileVM, false, \
784 "Profiles ticks that fall within VM (either in the VM Thread " \
785 "or VM code called through stubs)") \
786 \
787 product(bool, ProfileIntervals, false, \
788 "Prints profiles for each interval (see ProfileIntervalsTicks)") \
789 \
790 notproduct(bool, ProfilerCheckIntervals, false, \
791 "Collect and print info on spacing of profiler ticks") \
792 \
793 develop(bool, PrintJVMWarnings, false, \
794 "Prints warnings for unimplemented JVM functions") \
795 \
796 notproduct(uintx, WarnOnStalledSpinLock, 0, \
797 "Prints warnings for stalled SpinLocks") \
798 \
799 develop(bool, InitializeJavaLangSystem, true, \
800 "Initialize java.lang.System - turn off for individual " \
801 "method debugging") \
802 \
803 develop(bool, InitializeJavaLangString, true, \
804 "Initialize java.lang.String - turn off for individual " \
805 "method debugging") \
806 \
807 develop(bool, InitializeJavaLangExceptionsErrors, true, \
808 "Initialize various error and exception classes - turn off for " \
809 "individual method debugging") \
810 \
811 product(bool, RegisterFinalizersAtInit, true, \
812 "Register finalizable objects at end of Object.<init> or " \
813 "after allocation.") \
814 \
815 develop(bool, RegisterReferences, true, \
816 "Tells whether the VM should register soft/weak/final/phantom " \
817 "references") \
818 \
819 develop(bool, IgnoreRewrites, false, \
820 "Supress rewrites of bytecodes in the oopmap generator. " \
821 "This is unsafe!") \
822 \
823 develop(bool, PrintCodeCacheExtension, false, \
824 "Print extension of code cache") \
825 \
826 develop(bool, UsePrivilegedStack, true, \
827 "Enable the security JVM functions") \
828 \
829 develop(bool, IEEEPrecision, true, \
830 "Enables IEEE precision (for INTEL only)") \
831 \
832 develop(bool, ProtectionDomainVerification, true, \
833 "Verifies protection domain before resolution in system " \
834 "dictionary") \
835 \
836 product(bool, ClassUnloading, true, \
837 "Do unloading of classes") \
838 \
839 diagnostic(bool, LinkWellKnownClasses, false, \
840 "Resolve a well known class as soon as its name is seen") \
841 \
842 develop(bool, DisableStartThread, false, \
843 "Disable starting of additional Java threads " \
844 "(for debugging only)") \
845 \
846 develop(bool, MemProfiling, false, \
847 "Write memory usage profiling to log file") \
848 \
849 notproduct(bool, PrintSystemDictionaryAtExit, false, \
850 "Prints the system dictionary at exit") \
851 \
852 diagnostic(bool, UnsyncloadClass, false, \
853 "Unstable: VM calls loadClass unsynchronized. Custom " \
854 "class loader must call VM synchronized for findClass " \
855 "and defineClass.") \
856 \
857 product(bool, AlwaysLockClassLoader, false, \
858 "Require the VM to acquire the class loader lock before calling " \
859 "loadClass() even for class loaders registering " \
860 "as parallel capable. Default false. ") \
861 \
862 product(bool, AllowParallelDefineClass, false, \
863 "Allow parallel defineClass requests for class loaders " \
864 "registering as parallel capable. Default false") \
865 \
866 product(bool, MustCallLoadClassInternal, false, \
867 "Call loadClassInternal() rather than loadClass().Default false") \
868 \
869 product_pd(bool, DontYieldALot, \
870 "Throw away obvious excess yield calls (for SOLARIS only)") \
871 \
872 product_pd(bool, ConvertSleepToYield, \
873 "Converts sleep(0) to thread yield " \
874 "(may be off for SOLARIS to improve GUI)") \
875 \
876 product(bool, ConvertYieldToSleep, false, \
877 "Converts yield to a sleep of MinSleepInterval to simulate Win32 "\
878 "behavior (SOLARIS only)") \
879 \
880 product(bool, UseBoundThreads, true, \
881 "Bind user level threads to kernel threads (for SOLARIS only)") \
882 \
883 develop(bool, UseDetachedThreads, true, \
884 "Use detached threads that are recycled upon termination " \
885 "(for SOLARIS only)") \
886 \
887 product(bool, UseLWPSynchronization, true, \
888 "Use LWP-based instead of libthread-based synchronization " \
889 "(SPARC only)") \
890 \
891 product(ccstr, SyncKnobs, NULL, \
892 "(Unstable) Various monitor synchronization tunables") \
893 \
894 product(intx, EmitSync, 0, \
895 "(Unsafe,Unstable) " \
896 " Controls emission of inline sync fast-path code") \
897 \
898 product(intx, AlwaysInflate, 0, "(Unstable) Force inflation") \
899 \
900 product(intx, Atomics, 0, \
901 "(Unsafe,Unstable) Diagnostic - Controls emission of atomics") \
902 \
903 product(intx, FenceInstruction, 0, \
904 "(Unsafe,Unstable) Experimental") \
905 \
906 product(intx, SyncFlags, 0, "(Unsafe,Unstable) Experimental Sync flags" ) \
907 \
908 product(intx, SyncVerbose, 0, "(Unstable)" ) \
909 \
910 product(intx, ClearFPUAtPark, 0, "(Unsafe,Unstable)" ) \
911 \
912 product(intx, hashCode, 0, \
913 "(Unstable) select hashCode generation algorithm" ) \
914 \
915 product(intx, WorkAroundNPTLTimedWaitHang, 1, \
916 "(Unstable, Linux-specific)" \
917 " avoid NPTL-FUTEX hang pthread_cond_timedwait" ) \
918 \
919 product(bool, FilterSpuriousWakeups , true, \
920 "Prevent spurious or premature wakeups from object.wait" \
921 "(Solaris only)") \
922 \
923 product(intx, NativeMonitorTimeout, -1, "(Unstable)" ) \
924 product(intx, NativeMonitorFlags, 0, "(Unstable)" ) \
925 product(intx, NativeMonitorSpinLimit, 20, "(Unstable)" ) \
926 \
927 develop(bool, UsePthreads, false, \
928 "Use pthread-based instead of libthread-based synchronization " \
929 "(SPARC only)") \
930 \
931 product(bool, AdjustConcurrency, false, \
932 "call thr_setconcurrency at thread create time to avoid " \
933 "LWP starvation on MP systems (For Solaris Only)") \
934 \
935 develop(bool, UpdateHotSpotCompilerFileOnError, true, \
936 "Should the system attempt to update the compiler file when " \
937 "an error occurs?") \
938 \
939 product(bool, ReduceSignalUsage, false, \
940 "Reduce the use of OS signals in Java and/or the VM") \
941 \
942 notproduct(bool, ValidateMarkSweep, false, \
943 "Do extra validation during MarkSweep collection") \
944 \
945 notproduct(bool, RecordMarkSweepCompaction, false, \
946 "Enable GC-to-GC recording and querying of compaction during " \
947 "MarkSweep") \
948 \
949 develop_pd(bool, ShareVtableStubs, \
950 "Share vtable stubs (smaller code but worse branch prediction") \
951 \
952 develop(bool, LoadLineNumberTables, true, \
953 "Tells whether the class file parser loads line number tables") \
954 \
955 develop(bool, LoadLocalVariableTables, true, \
956 "Tells whether the class file parser loads local variable tables")\
957 \
958 develop(bool, LoadLocalVariableTypeTables, true, \
959 "Tells whether the class file parser loads local variable type tables")\
960 \
961 product(bool, AllowUserSignalHandlers, false, \
962 "Do not complain if the application installs signal handlers " \
963 "(Solaris & Linux only)") \
964 \
965 product(bool, UseSignalChaining, true, \
966 "Use signal-chaining to invoke signal handlers installed " \
967 "by the application (Solaris & Linux only)") \
968 \
969 product(bool, UseAltSigs, false, \
970 "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \
971 "internal signals. (Solaris only)") \
972 \
973 product(bool, UseSpinning, false, \
974 "Use spinning in monitor inflation and before entry") \
975 \
976 product(bool, PreSpinYield, false, \
977 "Yield before inner spinning loop") \
978 \
979 product(bool, PostSpinYield, true, \
980 "Yield after inner spinning loop") \
981 \
982 product(bool, AllowJNIEnvProxy, false, \
983 "Allow JNIEnv proxies for jdbx") \
984 \
985 product(bool, JNIDetachReleasesMonitors, true, \
986 "JNI DetachCurrentThread releases monitors owned by thread") \
987 \
988 product(bool, RestoreMXCSROnJNICalls, false, \
989 "Restore MXCSR when returning from JNI calls") \
990 \
991 product(bool, CheckJNICalls, false, \
992 "Verify all arguments to JNI calls") \
993 \
994 product(bool, UseFastJNIAccessors, true, \
995 "Use optimized versions of Get<Primitive>Field") \
996 \
997 product(bool, EagerXrunInit, false, \
998 "Eagerly initialize -Xrun libraries; allows startup profiling, " \
999 " but not all -Xrun libraries may support the state of the VM at this time") \
1000 \
1001 product(bool, PreserveAllAnnotations, false, \
1002 "Preserve RuntimeInvisibleAnnotations as well as RuntimeVisibleAnnotations") \
1003 \
1004 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \
1005 "Number of OutOfMemoryErrors preallocated with backtrace") \
1006 \
1007 product(bool, LazyBootClassLoader, true, \
1008 "Enable/disable lazy opening of boot class path entries") \
1009 \
1010 diagnostic(bool, UseIncDec, true, \
1011 "Use INC, DEC instructions on x86") \
1012 \
1013 product(bool, UseNewLongLShift, false, \
1014 "Use optimized bitwise shift left") \
1015 \
1016 product(bool, UseStoreImmI16, true, \
1017 "Use store immediate 16-bits value instruction on x86") \
1018 \
1019 product(bool, UseAddressNop, false, \
1020 "Use '0F 1F [addr]' NOP instructions on x86 cpus") \
1021 \
1022 product(bool, UseXmmLoadAndClearUpper, true, \
1023 "Load low part of XMM register and clear upper part") \
1024 \
1025 product(bool, UseXmmRegToRegMoveAll, false, \
1026 "Copy all XMM register bits when moving value between registers") \
1027 \
1028 product(bool, UseXmmI2D, false, \
1029 "Use SSE2 CVTDQ2PD instruction to convert Integer to Double") \
1030 \
1031 product(bool, UseXmmI2F, false, \
1032 "Use SSE2 CVTDQ2PS instruction to convert Integer to Float") \
1033 \
1034 product(bool, UseXMMForArrayCopy, false, \
1035 "Use SSE2 MOVQ instruction for Arraycopy") \
1036 \
1037 product(bool, UseUnalignedLoadStores, false, \
1038 "Use SSE2 MOVDQU instruction for Arraycopy") \
1039 \
1040 product(intx, FieldsAllocationStyle, 1, \
1041 "0 - type based with oops first, 1 - with oops last") \
1042 \
1043 product(bool, CompactFields, true, \
1044 "Allocate nonstatic fields in gaps between previous fields") \
1045 \
1046 notproduct(bool, PrintCompactFieldsSavings, false, \
1047 "Print how many words were saved with CompactFields") \
1048 \
1049 product(bool, UseBiasedLocking, true, \
1050 "Enable biased locking in JVM") \
1051 \
1052 product(intx, BiasedLockingStartupDelay, 4000, \
1053 "Number of milliseconds to wait before enabling biased locking") \
1054 \
1055 diagnostic(bool, PrintBiasedLockingStatistics, false, \
1056 "Print statistics of biased locking in JVM") \
1057 \
1058 product(intx, BiasedLockingBulkRebiasThreshold, 20, \
1059 "Threshold of number of revocations per type to try to " \
1060 "rebias all objects in the heap of that type") \
1061 \
1062 product(intx, BiasedLockingBulkRevokeThreshold, 40, \
1063 "Threshold of number of revocations per type to permanently " \
1064 "revoke biases of all objects in the heap of that type") \
1065 \
1066 product(intx, BiasedLockingDecayTime, 25000, \
1067 "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \
1068 "type after previous bulk rebias") \
1069 \
1070 /* tracing */ \
1071 \
1072 notproduct(bool, TraceRuntimeCalls, false, \
1073 "Trace run-time calls") \
1074 \
1075 develop(bool, TraceJNICalls, false, \
1076 "Trace JNI calls") \
1077 \
1078 notproduct(bool, TraceJVMCalls, false, \
1079 "Trace JVM calls") \
1080 \
1081 product(ccstr, TraceJVMTI, NULL, \
1082 "Trace flags for JVMTI functions and events") \
1083 \
1084 product(bool, ForceFullGCJVMTIEpilogues, false, \
1085 "Force 'Full GC' was done semantics for JVMTI GC epilogues") \
1086 \
1087 /* This option can change an EMCP method into an obsolete method. */ \
1088 /* This can affect tests that except specific methods to be EMCP. */ \
1089 /* This option should be used with caution. */ \
1090 product(bool, StressLdcRewrite, false, \
1091 "Force ldc -> ldc_w rewrite during RedefineClasses") \
1092 \
1093 product(intx, TraceRedefineClasses, 0, \
1094 "Trace level for JVMTI RedefineClasses") \
1095 \
1096 /* change to false by default sometime after Mustang */ \
1097 product(bool, VerifyMergedCPBytecodes, true, \
1098 "Verify bytecodes after RedefineClasses constant pool merging") \
1099 \
1100 develop(bool, TraceJNIHandleAllocation, false, \
1101 "Trace allocation/deallocation of JNI handle blocks") \
1102 \
1103 develop(bool, TraceThreadEvents, false, \
1104 "Trace all thread events") \
1105 \
1106 develop(bool, TraceBytecodes, false, \
1107 "Trace bytecode execution") \
1108 \
1109 develop(bool, TraceClassInitialization, false, \
1110 "Trace class initialization") \
1111 \
1112 develop(bool, TraceExceptions, false, \
1113 "Trace exceptions") \
1114 \
1115 develop(bool, TraceICs, false, \
1116 "Trace inline cache changes") \
1117 \
1118 notproduct(bool, TraceInvocationCounterOverflow, false, \
1119 "Trace method invocation counter overflow") \
1120 \
1121 develop(bool, TraceInlineCacheClearing, false, \
1122 "Trace clearing of inline caches in nmethods") \
1123 \
1124 develop(bool, TraceDependencies, false, \
1125 "Trace dependencies") \
1126 \
1127 develop(bool, VerifyDependencies, trueInDebug, \
1128 "Exercise and verify the compilation dependency mechanism") \
1129 \
1130 develop(bool, TraceNewOopMapGeneration, false, \
1131 "Trace OopMapGeneration") \
1132 \
1133 develop(bool, TraceNewOopMapGenerationDetailed, false, \
1134 "Trace OopMapGeneration: print detailed cell states") \
1135 \
1136 develop(bool, TimeOopMap, false, \
1137 "Time calls to GenerateOopMap::compute_map() in sum") \
1138 \
1139 develop(bool, TimeOopMap2, false, \
1140 "Time calls to GenerateOopMap::compute_map() individually") \
1141 \
1142 develop(bool, TraceMonitorMismatch, false, \
1143 "Trace monitor matching failures during OopMapGeneration") \
1144 \
1145 develop(bool, TraceOopMapRewrites, false, \
1146 "Trace rewritting of method oops during oop map generation") \
1147 \
1148 develop(bool, TraceSafepoint, false, \
1149 "Trace safepoint operations") \
1150 \
1151 develop(bool, TraceICBuffer, false, \
1152 "Trace usage of IC buffer") \
1153 \
1154 develop(bool, TraceCompiledIC, false, \
1155 "Trace changes of compiled IC") \
1156 \
1157 notproduct(bool, TraceZapDeadLocals, false, \
1158 "Trace zapping dead locals") \
1159 \
1160 develop(bool, TraceStartupTime, false, \
1161 "Trace setup time") \
1162 \
1163 develop(bool, TraceHPI, false, \
1164 "Trace Host Porting Interface (HPI)") \
1165 \
1166 product(ccstr, HPILibPath, NULL, \
1167 "Specify alternate path to HPI library") \
1168 \
1169 develop(bool, TraceProtectionDomainVerification, false, \
1170 "Trace protection domain verifcation") \
1171 \
1172 develop(bool, TraceClearedExceptions, false, \
1173 "Prints when an exception is forcibly cleared") \
1174 \
1175 product(bool, TraceClassResolution, false, \
1176 "Trace all constant pool resolutions (for debugging)") \
1177 \
1178 product(bool, TraceBiasedLocking, false, \
1179 "Trace biased locking in JVM") \
1180 \
1181 product(bool, TraceMonitorInflation, false, \
1182 "Trace monitor inflation in JVM") \
1183 \
1184 /* assembler */ \
1185 product(bool, Use486InstrsOnly, false, \
1186 "Use 80486 Compliant instruction subset") \
1187 \
1188 /* gc */ \
1189 \
1190 product(bool, UseSerialGC, false, \
1191 "Use the serial garbage collector") \
1192 \
1193 experimental(bool, UseG1GC, false, \
1194 "Use the Garbage-First garbage collector") \
1195 \
1196 product(bool, UseParallelGC, false, \
1197 "Use the Parallel Scavenge garbage collector") \
1198 \
1199 product(bool, UseParallelOldGC, false, \
1200 "Use the Parallel Old garbage collector") \
1201 \
1202 product(bool, UseParallelOldGCCompacting, true, \
1203 "In the Parallel Old garbage collector use parallel compaction") \
1204 \
1205 product(bool, UseParallelDensePrefixUpdate, true, \
1206 "In the Parallel Old garbage collector use parallel dense" \
1207 " prefix update") \
1208 \
1209 product(uintx, HeapMaximumCompactionInterval, 20, \
1210 "How often should we maximally compact the heap (not allowing " \
1211 "any dead space)") \
1212 \
1213 product(uintx, HeapFirstMaximumCompactionCount, 3, \
1214 "The collection count for the first maximum compaction") \
1215 \
1216 product(bool, UseMaximumCompactionOnSystemGC, true, \
1217 "In the Parallel Old garbage collector maximum compaction for " \
1218 "a system GC") \
1219 \
1220 product(uintx, ParallelOldDeadWoodLimiterMean, 50, \
1221 "The mean used by the par compact dead wood" \
1222 "limiter (a number between 0-100).") \
1223 \
1224 product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \
1225 "The standard deviation used by the par compact dead wood" \
1226 "limiter (a number between 0-100).") \
1227 \
1228 product(bool, UseParallelOldGCDensePrefix, true, \
1229 "Use a dense prefix with the Parallel Old garbage collector") \
1230 \
1231 product(uintx, ParallelGCThreads, 0, \
1232 "Number of parallel threads parallel gc will use") \
1233 \
1234 product(uintx, ParallelCMSThreads, 0, \
1235 "Max number of threads CMS will use for concurrent work") \
1236 \
1237 develop(bool, ParallelOldGCSplitALot, false, \
1238 "Provoke splitting (copying data from a young gen space to" \
1239 "multiple destination spaces)") \
1240 \
1241 develop(uintx, ParallelOldGCSplitInterval, 3, \
1242 "How often to provoke splitting a young gen space") \
1243 \
1244 develop(bool, TraceRegionTasksQueuing, false, \
1245 "Trace the queuing of the region tasks") \
1246 \
1247 product(uintx, ParallelMarkingThreads, 0, \
1248 "Number of marking threads concurrent gc will use") \
1249 \
1250 product(uintx, YoungPLABSize, 4096, \
1251 "Size of young gen promotion labs (in HeapWords)") \
1252 \
1253 product(uintx, OldPLABSize, 1024, \
1254 "Size of old gen promotion labs (in HeapWords)") \
1255 \
1256 product(uintx, GCTaskTimeStampEntries, 200, \
1257 "Number of time stamp entries per gc worker thread") \
1258 \
1259 product(bool, AlwaysTenure, false, \
1260 "Always tenure objects in eden. (ParallelGC only)") \
1261 \
1262 product(bool, NeverTenure, false, \
1263 "Never tenure objects in eden, May tenure on overflow" \
1264 " (ParallelGC only)") \
1265 \
1266 product(bool, ScavengeBeforeFullGC, true, \
1267 "Scavenge youngest generation before each full GC," \
1268 " used with UseParallelGC") \
1269 \
1270 develop(bool, ScavengeWithObjectsInToSpace, false, \
1271 "Allow scavenges to occur when to_space contains objects.") \
1272 \
1273 product(bool, UseConcMarkSweepGC, false, \
1274 "Use Concurrent Mark-Sweep GC in the old generation") \
1275 \
1276 product(bool, ExplicitGCInvokesConcurrent, false, \
1277 "A System.gc() request invokes a concurrent collection;" \
1278 " (effective only when UseConcMarkSweepGC)") \
1279 \
1280 product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \
1281 "A System.gc() request invokes a concurrent collection and" \
1282 " also unloads classes during such a concurrent gc cycle " \
1283 " (effective only when UseConcMarkSweepGC)") \
1284 \
1285 develop(bool, UseCMSAdaptiveFreeLists, true, \
1286 "Use Adaptive Free Lists in the CMS generation") \
1287 \
1288 develop(bool, UseAsyncConcMarkSweepGC, true, \
1289 "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\
1290 \
1291 develop(bool, RotateCMSCollectionTypes, false, \
1292 "Rotate the CMS collections among concurrent and STW") \
1293 \
1294 product(bool, UseCMSBestFit, true, \
1295 "Use CMS best fit allocation strategy") \
1296 \
1297 product(bool, UseCMSCollectionPassing, true, \
1298 "Use passing of collection from background to foreground") \
1299 \
1300 product(bool, UseParNewGC, false, \
1301 "Use parallel threads in the new generation.") \
1302 \
1303 product(bool, ParallelGCVerbose, false, \
1304 "Verbose output for parallel GC.") \
1305 \
1306 product(intx, ParallelGCBufferWastePct, 10, \
1307 "wasted fraction of parallel allocation buffer.") \
1308 \
1309 product(bool, ParallelGCRetainPLAB, true, \
1310 "Retain parallel allocation buffers across scavenges.") \
1311 \
1312 product(intx, TargetPLABWastePct, 10, \
1313 "target wasted space in last buffer as pct of overall allocation")\
1314 \
1315 product(uintx, PLABWeight, 75, \
1316 "Percentage (0-100) used to weight the current sample when" \
1317 "computing exponentially decaying average for ResizePLAB.") \
1318 \
1319 product(bool, ResizePLAB, true, \
1320 "Dynamically resize (survivor space) promotion labs") \
1321 \
1322 product(bool, PrintPLAB, false, \
1323 "Print (survivor space) promotion labs sizing decisions") \
1324 \
1325 product(intx, ParGCArrayScanChunk, 50, \
1326 "Scan a subset and push remainder, if array is bigger than this") \
1327 \
1328 product(bool, ParGCUseLocalOverflow, false, \
1329 "Instead of a global overflow list, use local overflow stacks") \
1330 \
1331 product(bool, ParGCTrimOverflow, true, \
1332 "Eagerly trim the local overflow lists (when ParGCUseLocalOverflow") \
1333 \
1334 notproduct(bool, ParGCWorkQueueOverflowALot, false, \
1335 "Whether we should simulate work queue overflow in ParNew") \
1336 \
1337 notproduct(uintx, ParGCWorkQueueOverflowInterval, 1000, \
1338 "An `interval' counter that determines how frequently" \
1339 " we simulate overflow; a smaller number increases frequency") \
1340 \
1341 product(uintx, ParGCDesiredObjsFromOverflowList, 20, \
1342 "The desired number of objects to claim from the overflow list") \
1343 \
1344 product(uintx, CMSParPromoteBlocksToClaim, 50, \
1345 "Number of blocks to attempt to claim when refilling CMS LAB for "\
1346 "parallel GC.") \
1347 \
1348 product(bool, AlwaysPreTouch, false, \
1349 "It forces all freshly committed pages to be pre-touched.") \
1350 \
1351 product(bool, CMSUseOldDefaults, false, \
1352 "A flag temporarily introduced to allow reverting to some older" \
1353 "default settings; older as of 6.0 ") \
1354 \
1355 product(intx, CMSYoungGenPerWorker, 16*M, \
1356 "The amount of young gen chosen by default per GC worker " \
1357 "thread available ") \
1358 \
1359 product(bool, GCOverheadReporting, false, \
1360 "Enables the GC overhead reporting facility") \
1361 \
1362 product(intx, GCOverheadReportingPeriodMS, 100, \
1363 "Reporting period for conc GC overhead reporting, in ms ") \
1364 \
1365 product(bool, CMSIncrementalMode, false, \
1366 "Whether CMS GC should operate in \"incremental\" mode") \
1367 \
1368 product(uintx, CMSIncrementalDutyCycle, 10, \
1369 "CMS incremental mode duty cycle (a percentage, 0-100). If" \
1370 "CMSIncrementalPacing is enabled, then this is just the initial" \
1371 "value") \
1372 \
1373 product(bool, CMSIncrementalPacing, true, \
1374 "Whether the CMS incremental mode duty cycle should be " \
1375 "automatically adjusted") \
1376 \
1377 product(uintx, CMSIncrementalDutyCycleMin, 0, \
1378 "Lower bound on the duty cycle when CMSIncrementalPacing is" \
1379 "enabled (a percentage, 0-100).") \
1380 \
1381 product(uintx, CMSIncrementalSafetyFactor, 10, \
1382 "Percentage (0-100) used to add conservatism when computing the" \
1383 "duty cycle.") \
1384 \
1385 product(uintx, CMSIncrementalOffset, 0, \
1386 "Percentage (0-100) by which the CMS incremental mode duty cycle" \
1387 "is shifted to the right within the period between young GCs") \
1388 \
1389 product(uintx, CMSExpAvgFactor, 25, \
1390 "Percentage (0-100) used to weight the current sample when" \
1391 "computing exponential averages for CMS statistics.") \
1392 \
1393 product(uintx, CMS_FLSWeight, 50, \
1394 "Percentage (0-100) used to weight the current sample when" \
1395 "computing exponentially decating averages for CMS FLS statistics.") \
1396 \
1397 product(uintx, CMS_FLSPadding, 2, \
1398 "The multiple of deviation from mean to use for buffering" \
1399 "against volatility in free list demand.") \
1400 \
1401 product(uintx, FLSCoalescePolicy, 2, \
1402 "CMS: Aggression level for coalescing, increasing from 0 to 4") \
1403 \
1404 product(uintx, CMS_SweepWeight, 50, \
1405 "Percentage (0-100) used to weight the current sample when" \
1406 "computing exponentially decaying average for inter-sweep duration.") \
1407 \
1408 product(uintx, CMS_SweepPadding, 2, \
1409 "The multiple of deviation from mean to use for buffering" \
1410 "against volatility in inter-sweep duration.") \
1411 \
1412 product(uintx, CMS_SweepTimerThresholdMillis, 10, \
1413 "Skip block flux-rate sampling for an epoch unless inter-sweep " \
1414 " duration exceeds this threhold in milliseconds") \
1415 \
1416 develop(bool, CMSTraceIncrementalMode, false, \
1417 "Trace CMS incremental mode") \
1418 \
1419 develop(bool, CMSTraceIncrementalPacing, false, \
1420 "Trace CMS incremental mode pacing computation") \
1421 \
1422 develop(bool, CMSTraceThreadState, false, \
1423 "Trace the CMS thread state (enable the trace_state() method)") \
1424 \
1425 product(bool, CMSClassUnloadingEnabled, false, \
1426 "Whether class unloading enabled when using CMS GC") \
1427 \
1428 product(uintx, CMSClassUnloadingMaxInterval, 0, \
1429 "When CMS class unloading is enabled, the maximum CMS cycle count"\
1430 " for which classes may not be unloaded") \
1431 \
1432 product(bool, CMSCompactWhenClearAllSoftRefs, true, \
1433 "Compact when asked to collect CMS gen with clear_all_soft_refs") \
1434 \
1435 product(bool, UseCMSCompactAtFullCollection, true, \
1436 "Use mark sweep compact at full collections") \
1437 \
1438 product(uintx, CMSFullGCsBeforeCompaction, 0, \
1439 "Number of CMS full collection done before compaction if > 0") \
1440 \
1441 develop(intx, CMSDictionaryChoice, 0, \
1442 "Use BinaryTreeDictionary as default in the CMS generation") \
1443 \
1444 product(uintx, CMSIndexedFreeListReplenish, 4, \
1445 "Replenish and indexed free list with this number of chunks") \
1446 \
1447 product(bool, CMSLoopWarn, false, \
1448 "Warn in case of excessive CMS looping") \
1449 \
1450 develop(bool, CMSOverflowEarlyRestoration, false, \
1451 "Whether preserved marks should be restored early") \
1452 \
1453 product(uintx, CMSMarkStackSize, NOT_LP64(32*K) LP64_ONLY(4*M), \
1454 "Size of CMS marking stack") \
1455 \
1456 product(uintx, CMSMarkStackSizeMax, NOT_LP64(4*M) LP64_ONLY(512*M), \
1457 "Max size of CMS marking stack") \
1458 \
1459 notproduct(bool, CMSMarkStackOverflowALot, false, \
1460 "Whether we should simulate frequent marking stack / work queue" \
1461 " overflow") \
1462 \
1463 notproduct(uintx, CMSMarkStackOverflowInterval, 1000, \
1464 "An `interval' counter that determines how frequently" \
1465 " we simulate overflow; a smaller number increases frequency") \
1466 \
1467 product(uintx, CMSMaxAbortablePrecleanLoops, 0, \
1468 "(Temporary, subject to experimentation)" \
1469 "Maximum number of abortable preclean iterations, if > 0") \
1470 \
1471 product(intx, CMSMaxAbortablePrecleanTime, 5000, \
1472 "(Temporary, subject to experimentation)" \
1473 "Maximum time in abortable preclean in ms") \
1474 \
1475 product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \
1476 "(Temporary, subject to experimentation)" \
1477 "Nominal minimum work per abortable preclean iteration") \
1478 \
1479 product(intx, CMSAbortablePrecleanWaitMillis, 100, \
1480 "(Temporary, subject to experimentation)" \
1481 " Time that we sleep between iterations when not given" \
1482 " enough work per iteration") \
1483 \
1484 product(uintx, CMSRescanMultiple, 32, \
1485 "Size (in cards) of CMS parallel rescan task") \
1486 \
1487 product(uintx, CMSConcMarkMultiple, 32, \
1488 "Size (in cards) of CMS concurrent MT marking task") \
1489 \
1490 product(uintx, CMSRevisitStackSize, 1*M, \
1491 "Size of CMS KlassKlass revisit stack") \
1492 \
1493 product(bool, CMSAbortSemantics, false, \
1494 "Whether abort-on-overflow semantics is implemented") \
1495 \
1496 product(bool, CMSParallelRemarkEnabled, true, \
1497 "Whether parallel remark enabled (only if ParNewGC)") \
1498 \
1499 product(bool, CMSParallelSurvivorRemarkEnabled, true, \
1500 "Whether parallel remark of survivor space" \
1501 " enabled (effective only if CMSParallelRemarkEnabled)") \
1502 \
1503 product(bool, CMSPLABRecordAlways, true, \
1504 "Whether to always record survivor space PLAB bdries" \
1505 " (effective only if CMSParallelSurvivorRemarkEnabled)") \
1506 \
1507 product(bool, CMSConcurrentMTEnabled, true, \
1508 "Whether multi-threaded concurrent work enabled (if ParNewGC)") \
1509 \
1510 product(bool, CMSPermGenPrecleaningEnabled, true, \
1511 "Whether concurrent precleaning enabled in perm gen" \
1512 " (effective only when CMSPrecleaningEnabled is true)") \
1513 \
1514 product(bool, CMSPrecleaningEnabled, true, \
1515 "Whether concurrent precleaning enabled") \
1516 \
1517 product(uintx, CMSPrecleanIter, 3, \
1518 "Maximum number of precleaning iteration passes") \
1519 \
1520 product(uintx, CMSPrecleanNumerator, 2, \
1521 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \
1522 " ratio") \
1523 \
1524 product(uintx, CMSPrecleanDenominator, 3, \
1525 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \
1526 " ratio") \
1527 \
1528 product(bool, CMSPrecleanRefLists1, true, \
1529 "Preclean ref lists during (initial) preclean phase") \
1530 \
1531 product(bool, CMSPrecleanRefLists2, false, \
1532 "Preclean ref lists during abortable preclean phase") \
1533 \
1534 product(bool, CMSPrecleanSurvivors1, false, \
1535 "Preclean survivors during (initial) preclean phase") \
1536 \
1537 product(bool, CMSPrecleanSurvivors2, true, \
1538 "Preclean survivors during abortable preclean phase") \
1539 \
1540 product(uintx, CMSPrecleanThreshold, 1000, \
1541 "Don't re-iterate if #dirty cards less than this") \
1542 \
1543 product(bool, CMSCleanOnEnter, true, \
1544 "Clean-on-enter optimization for reducing number of dirty cards") \
1545 \
1546 product(uintx, CMSRemarkVerifyVariant, 1, \
1547 "Choose variant (1,2) of verification following remark") \
1548 \
1549 product(uintx, CMSScheduleRemarkEdenSizeThreshold, 2*M, \
1550 "If Eden used is below this value, don't try to schedule remark") \
1551 \
1552 product(uintx, CMSScheduleRemarkEdenPenetration, 50, \
1553 "The Eden occupancy % at which to try and schedule remark pause") \
1554 \
1555 product(uintx, CMSScheduleRemarkSamplingRatio, 5, \
1556 "Start sampling Eden top at least before yg occupancy reaches" \
1557 " 1/<ratio> of the size at which we plan to schedule remark") \
1558 \
1559 product(uintx, CMSSamplingGrain, 16*K, \
1560 "The minimum distance between eden samples for CMS (see above)") \
1561 \
1562 product(bool, CMSScavengeBeforeRemark, false, \
1563 "Attempt scavenge before the CMS remark step") \
1564 \
1565 develop(bool, CMSTraceSweeper, false, \
1566 "Trace some actions of the CMS sweeper") \
1567 \
1568 product(uintx, CMSWorkQueueDrainThreshold, 10, \
1569 "Don't drain below this size per parallel worker/thief") \
1570 \
1571 product(intx, CMSWaitDuration, 2000, \
1572 "Time in milliseconds that CMS thread waits for young GC") \
1573 \
1574 product(bool, CMSYield, true, \
1575 "Yield between steps of concurrent mark & sweep") \
1576 \
1577 product(uintx, CMSBitMapYieldQuantum, 10*M, \
1578 "Bitmap operations should process at most this many bits" \
1579 "between yields") \
1580 \
1581 diagnostic(bool, FLSVerifyAllHeapReferences, false, \
1582 "Verify that all refs across the FLS boundary " \
1583 " are to valid objects") \
1584 \
1585 diagnostic(bool, FLSVerifyLists, false, \
1586 "Do lots of (expensive) FreeListSpace verification") \
1587 \
1588 diagnostic(bool, FLSVerifyIndexTable, false, \
1589 "Do lots of (expensive) FLS index table verification") \
1590 \
1591 develop(bool, FLSVerifyDictionary, false, \
1592 "Do lots of (expensive) FLS dictionary verification") \
1593 \
1594 develop(bool, VerifyBlockOffsetArray, false, \
1595 "Do (expensive!) block offset array verification") \
1596 \
1597 product(bool, BlockOffsetArrayUseUnallocatedBlock, trueInDebug, \
1598 "Maintain _unallocated_block in BlockOffsetArray" \
1599 " (currently applicable only to CMS collector)") \
1600 \
1601 develop(bool, TraceCMSState, false, \
1602 "Trace the state of the CMS collection") \
1603 \
1604 product(intx, RefDiscoveryPolicy, 0, \
1605 "Whether reference-based(0) or referent-based(1)") \
1606 \
1607 product(bool, ParallelRefProcEnabled, false, \
1608 "Enable parallel reference processing whenever possible") \
1609 \
1610 product(bool, ParallelRefProcBalancingEnabled, true, \
1611 "Enable balancing of reference processing queues") \
1612 \
1613 product(intx, CMSTriggerRatio, 80, \
1614 "Percentage of MinHeapFreeRatio in CMS generation that is " \
1615 " allocated before a CMS collection cycle commences") \
1616 \
1617 product(intx, CMSTriggerPermRatio, 80, \
1618 "Percentage of MinHeapFreeRatio in the CMS perm generation that" \
1619 " is allocated before a CMS collection cycle commences, that " \
1620 " also collects the perm generation") \
1621 \
1622 product(uintx, CMSBootstrapOccupancy, 50, \
1623 "Percentage CMS generation occupancy at which to " \
1624 " initiate CMS collection for bootstrapping collection stats") \
1625 \
1626 product(intx, CMSInitiatingOccupancyFraction, -1, \
1627 "Percentage CMS generation occupancy to start a CMS collection " \
1628 " cycle (A negative value means that CMSTriggerRatio is used)") \
1629 \
1630 product(intx, CMSInitiatingPermOccupancyFraction, -1, \
1631 "Percentage CMS perm generation occupancy to start a CMScollection"\
1632 " cycle (A negative value means that CMSTriggerPermRatio is used)")\
1633 \
1634 product(bool, UseCMSInitiatingOccupancyOnly, false, \
1635 "Only use occupancy as a crierion for starting a CMS collection") \
1636 \
1637 product(intx, CMSIsTooFullPercentage, 98, \
1638 "An absolute ceiling above which CMS will always consider the" \
1639 " perm gen ripe for collection") \
1640 \
1641 develop(bool, CMSTestInFreeList, false, \
1642 "Check if the coalesced range is already in the " \
1643 "free lists as claimed.") \
1644 \
1645 notproduct(bool, CMSVerifyReturnedBytes, false, \
1646 "Check that all the garbage collected was returned to the " \
1647 "free lists.") \
1648 \
1649 notproduct(bool, ScavengeALot, false, \
1650 "Force scavenge at every Nth exit from the runtime system " \
1651 "(N=ScavengeALotInterval)") \
1652 \
1653 develop(bool, FullGCALot, false, \
1654 "Force full gc at every Nth exit from the runtime system " \
1655 "(N=FullGCALotInterval)") \
1656 \
1657 notproduct(bool, GCALotAtAllSafepoints, false, \
1658 "Enforce ScavengeALot/GCALot at all potential safepoints") \
1659 \
1660 product(bool, HandlePromotionFailure, true, \
1661 "The youngest generation collection does not require" \
1662 " a guarantee of full promotion of all live objects.") \
1663 \
1664 notproduct(bool, PromotionFailureALot, false, \
1665 "Use promotion failure handling on every youngest generation " \
1666 "collection") \
1667 \
1668 develop(uintx, PromotionFailureALotCount, 1000, \
1669 "Number of promotion failures occurring at ParGCAllocBuffer" \
1670 "refill attempts (ParNew) or promotion attempts " \
1671 "(other young collectors) ") \
1672 \
1673 develop(uintx, PromotionFailureALotInterval, 5, \
1674 "Total collections between promotion failures alot") \
1675 \
1676 develop(intx, WorkStealingSleepMillis, 1, \
1677 "Sleep time when sleep is used for yields") \
1678 \
1679 develop(uintx, WorkStealingYieldsBeforeSleep, 1000, \
1680 "Number of yields before a sleep is done during workstealing") \
1681 \
1682 develop(uintx, WorkStealingHardSpins, 4096, \
1683 "Number of iterations in a spin loop between checks on " \
1684 "time out of hard spin") \
1685 \
1686 develop(uintx, WorkStealingSpinToYieldRatio, 10, \
1687 "Ratio of hard spins to calls to yield") \
1688 \
1689 product(uintx, PreserveMarkStackSize, 1024, \
1690 "Size for stack used in promotion failure handling") \
1691 \
1692 product_pd(bool, UseTLAB, "Use thread-local object allocation") \
1693 \
1694 product_pd(bool, ResizeTLAB, \
1695 "Dynamically resize tlab size for threads") \
1696 \
1697 product(bool, ZeroTLAB, false, \
1698 "Zero out the newly created TLAB") \
1699 \
1700 product(bool, FastTLABRefill, true, \
1701 "Use fast TLAB refill code") \
1702 \
1703 product(bool, PrintTLAB, false, \
1704 "Print various TLAB related information") \
1705 \
1706 product(bool, TLABStats, true, \
1707 "Print various TLAB related information") \
1708 \
1709 product(bool, PrintRevisitStats, false, \
1710 "Print revisit (klass and MDO) stack related information") \
1711 \
1712 product_pd(bool, NeverActAsServerClassMachine, \
1713 "Never act like a server-class machine") \
1714 \
1715 product(bool, AlwaysActAsServerClassMachine, false, \
1716 "Always act like a server-class machine") \
1717 \
1718 product_pd(uintx, DefaultMaxRAM, \
1719 "Maximum real memory size for setting server class heap size") \
1720 \
1721 product(uintx, DefaultMaxRAMFraction, 4, \
1722 "Fraction (1/n) of real memory used for server class max heap") \
1723 \
1724 product(uintx, DefaultInitialRAMFraction, 64, \
1725 "Fraction (1/n) of real memory used for server class initial heap") \
1726 \
1727 product(bool, UseAutoGCSelectPolicy, false, \
1728 "Use automatic collection selection policy") \
1729 \
1730 product(uintx, AutoGCSelectPauseMillis, 5000, \
1731 "Automatic GC selection pause threshhold in ms") \
1732 \
1733 product(bool, UseAdaptiveSizePolicy, true, \
1734 "Use adaptive generation sizing policies") \
1735 \
1736 product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \
1737 "Use adaptive survivor sizing policies") \
1738 \
1739 product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \
1740 "Use adaptive young-old sizing policies at minor collections") \
1741 \
1742 product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \
1743 "Use adaptive young-old sizing policies at major collections") \
1744 \
1745 product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \
1746 "Use statistics from System.GC for adaptive size policy") \
1747 \
1748 product(bool, UseAdaptiveGCBoundary, false, \
1749 "Allow young-old boundary to move") \
1750 \
1751 develop(bool, TraceAdaptiveGCBoundary, false, \
1752 "Trace young-old boundary moves") \
1753 \
1754 develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \
1755 "Resize the virtual spaces of the young or old generations") \
1756 \
1757 product(uintx, AdaptiveSizeThroughPutPolicy, 0, \
1758 "Policy for changeing generation size for throughput goals") \
1759 \
1760 product(uintx, AdaptiveSizePausePolicy, 0, \
1761 "Policy for changing generation size for pause goals") \
1762 \
1763 develop(bool, PSAdjustTenuredGenForMinorPause, false, \
1764 "Adjust tenured generation to achive a minor pause goal") \
1765 \
1766 develop(bool, PSAdjustYoungGenForMajorPause, false, \
1767 "Adjust young generation to achive a major pause goal") \
1768 \
1769 product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \
1770 "Number of steps where heuristics is used before data is used") \
1771 \
1772 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \
1773 "Number of collections before the adaptive sizing is started") \
1774 \
1775 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \
1776 "Collecton interval for printing information, zero => never") \
1777 \
1778 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \
1779 "Use adaptive minimum footprint as a goal") \
1780 \
1781 product(uintx, AdaptiveSizePolicyWeight, 10, \
1782 "Weight given to exponential resizing, between 0 and 100") \
1783 \
1784 product(uintx, AdaptiveTimeWeight, 25, \
1785 "Weight given to time in adaptive policy, between 0 and 100") \
1786 \
1787 product(uintx, PausePadding, 1, \
1788 "How much buffer to keep for pause time") \
1789 \
1790 product(uintx, PromotedPadding, 3, \
1791 "How much buffer to keep for promotion failure") \
1792 \
1793 product(uintx, SurvivorPadding, 3, \
1794 "How much buffer to keep for survivor overflow") \
1795 \
1796 product(uintx, AdaptivePermSizeWeight, 20, \
1797 "Weight for perm gen exponential resizing, between 0 and 100") \
1798 \
1799 product(uintx, PermGenPadding, 3, \
1800 "How much buffer to keep for perm gen sizing") \
1801 \
1802 product(uintx, ThresholdTolerance, 10, \
1803 "Allowed collection cost difference between generations") \
1804 \
1805 product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \
1806 "If collection costs are within margin, reduce both by full delta") \
1807 \
1808 product(uintx, YoungGenerationSizeIncrement, 20, \
1809 "Adaptive size percentage change in young generation") \
1810 \
1811 product(uintx, YoungGenerationSizeSupplement, 80, \
1812 "Supplement to YoungedGenerationSizeIncrement used at startup") \
1813 \
1814 product(uintx, YoungGenerationSizeSupplementDecay, 8, \
1815 "Decay factor to YoungedGenerationSizeSupplement") \
1816 \
1817 product(uintx, TenuredGenerationSizeIncrement, 20, \
1818 "Adaptive size percentage change in tenured generation") \
1819 \
1820 product(uintx, TenuredGenerationSizeSupplement, 80, \
1821 "Supplement to TenuredGenerationSizeIncrement used at startup") \
1822 \
1823 product(uintx, TenuredGenerationSizeSupplementDecay, 2, \
1824 "Decay factor to TenuredGenerationSizeIncrement") \
1825 \
1826 product(uintx, MaxGCPauseMillis, max_uintx, \
1827 "Adaptive size policy maximum GC pause time goal in msec, " \
1828 "or (G1 Only) the max. GC time per MMU time slice") \
1829 \
1830 product(intx, GCPauseIntervalMillis, 500, \
1831 "Time slice for MMU specification") \
1832 \
1833 product(uintx, MaxGCMinorPauseMillis, max_uintx, \
1834 "Adaptive size policy maximum GC minor pause time goal in msec") \
1835 \
1836 product(uintx, GCTimeRatio, 99, \
1837 "Adaptive size policy application time to GC time ratio") \
1838 \
1839 product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \
1840 "Adaptive size scale down factor for shrinking") \
1841 \
1842 product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \
1843 "Adaptive size decays the major cost for long major intervals") \
1844 \
1845 product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \
1846 "Time scale over which major costs decay") \
1847 \
1848 product(uintx, MinSurvivorRatio, 3, \
1849 "Minimum ratio of young generation/survivor space size") \
1850 \
1851 product(uintx, InitialSurvivorRatio, 8, \
1852 "Initial ratio of eden/survivor space size") \
1853 \
1854 product(uintx, BaseFootPrintEstimate, 256*M, \
1855 "Estimate of footprint other than Java Heap") \
1856 \
1857 product(bool, UseGCOverheadLimit, true, \
1858 "Use policy to limit of proportion of time spent in GC " \
1859 "before an OutOfMemory error is thrown") \
1860 \
1861 product(uintx, GCTimeLimit, 98, \
1862 "Limit of proportion of time spent in GC before an OutOfMemory" \
1863 "error is thrown (used with GCHeapFreeLimit)") \
1864 \
1865 product(uintx, GCHeapFreeLimit, 2, \
1866 "Minimum percentage of free space after a full GC before an " \
1867 "OutOfMemoryError is thrown (used with GCTimeLimit)") \
1868 \
1869 develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \
1870 "Number of consecutive collections before gc time limit fires") \
1871 \
1872 product(bool, PrintAdaptiveSizePolicy, false, \
1873 "Print information about AdaptiveSizePolicy") \
1874 \
1875 product(intx, PrefetchCopyIntervalInBytes, -1, \
1876 "How far ahead to prefetch destination area (<= 0 means off)") \
1877 \
1878 product(intx, PrefetchScanIntervalInBytes, -1, \
1879 "How far ahead to prefetch scan area (<= 0 means off)") \
1880 \
1881 product(intx, PrefetchFieldsAhead, -1, \
1882 "How many fields ahead to prefetch in oop scan (<= 0 means off)") \
1883 \
1884 develop(bool, UsePrefetchQueue, true, \
1885 "Use the prefetch queue during PS promotion") \
1886 \
1887 diagnostic(bool, VerifyBeforeExit, trueInDebug, \
1888 "Verify system before exiting") \
1889 \
1890 diagnostic(bool, VerifyBeforeGC, false, \
1891 "Verify memory system before GC") \
1892 \
1893 diagnostic(bool, VerifyAfterGC, false, \
1894 "Verify memory system after GC") \
1895 \
1896 diagnostic(bool, VerifyDuringGC, false, \
1897 "Verify memory system during GC (between phases)") \
1898 \
1899 diagnostic(bool, GCParallelVerificationEnabled, true, \
1900 "Enable parallel memory system verification") \
1901 \
1902 diagnostic(bool, VerifyRememberedSets, false, \
1903 "Verify GC remembered sets") \
1904 \
1905 diagnostic(bool, VerifyObjectStartArray, true, \
1906 "Verify GC object start array if verify before/after") \
1907 \
1908 product(bool, DisableExplicitGC, false, \
1909 "Tells whether calling System.gc() does a full GC") \
1910 \
1911 notproduct(bool, CheckMemoryInitialization, false, \
1912 "Checks memory initialization") \
1913 \
1914 product(bool, CollectGen0First, false, \
1915 "Collect youngest generation before each full GC") \
1916 \
1917 diagnostic(bool, BindCMSThreadToCPU, false, \
1918 "Bind CMS Thread to CPU if possible") \
1919 \
1920 diagnostic(uintx, CPUForCMSThread, 0, \
1921 "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \
1922 \
1923 product(bool, BindGCTaskThreadsToCPUs, false, \
1924 "Bind GCTaskThreads to CPUs if possible") \
1925 \
1926 product(bool, UseGCTaskAffinity, false, \
1927 "Use worker affinity when asking for GCTasks") \
1928 \
1929 product(uintx, ProcessDistributionStride, 4, \
1930 "Stride through processors when distributing processes") \
1931 \
1932 product(uintx, CMSCoordinatorYieldSleepCount, 10, \
1933 "number of times the coordinator GC thread will sleep while " \
1934 "yielding before giving up and resuming GC") \
1935 \
1936 product(uintx, CMSYieldSleepCount, 0, \
1937 "number of times a GC thread (minus the coordinator) " \
1938 "will sleep while yielding before giving up and resuming GC") \
1939 \
1940 notproduct(bool, PrintFlagsFinal, false, \
1941 "Print all command line flags after argument processing") \
1942 \
1943 /* gc tracing */ \
1944 manageable(bool, PrintGC, false, \
1945 "Print message at garbage collect") \
1946 \
1947 manageable(bool, PrintGCDetails, false, \
1948 "Print more details at garbage collect") \
1949 \
1950 manageable(bool, PrintGCDateStamps, false, \
1951 "Print date stamps at garbage collect") \
1952 \
1953 manageable(bool, PrintGCTimeStamps, false, \
1954 "Print timestamps at garbage collect") \
1955 \
1956 product(bool, PrintGCTaskTimeStamps, false, \
1957 "Print timestamps for individual gc worker thread tasks") \
1958 \
1959 develop(intx, ConcGCYieldTimeout, 0, \
1960 "If non-zero, assert that GC threads yield within this # of ms.") \
1961 \
1962 notproduct(bool, TraceMarkSweep, false, \
1963 "Trace mark sweep") \
1964 \
1965 product(bool, PrintReferenceGC, false, \
1966 "Print times spent handling reference objects during GC " \
1967 " (enabled only when PrintGCDetails)") \
1968 \
1969 develop(bool, TraceReferenceGC, false, \
1970 "Trace handling of soft/weak/final/phantom references") \
1971 \
1972 develop(bool, TraceFinalizerRegistration, false, \
1973 "Trace registration of final references") \
1974 \
1975 notproduct(bool, TraceScavenge, false, \
1976 "Trace scavenge") \
1977 \
1978 product_rw(bool, TraceClassLoading, false, \
1979 "Trace all classes loaded") \
1980 \
1981 product(bool, TraceClassLoadingPreorder, false, \
1982 "Trace all classes loaded in order referenced (not loaded)") \
1983 \
1984 product_rw(bool, TraceClassUnloading, false, \
1985 "Trace unloading of classes") \
1986 \
1987 product_rw(bool, TraceLoaderConstraints, false, \
1988 "Trace loader constraints") \
1989 \
1990 product(bool, TraceGen0Time, false, \
1991 "Trace accumulated time for Gen 0 collection") \
1992 \
1993 product(bool, TraceGen1Time, false, \
1994 "Trace accumulated time for Gen 1 collection") \
1995 \
1996 product(bool, PrintTenuringDistribution, false, \
1997 "Print tenuring age information") \
1998 \
1999 product_rw(bool, PrintHeapAtGC, false, \
2000 "Print heap layout before and after each GC") \
2001 \
2002 product_rw(bool, PrintHeapAtGCExtended, false, \
2003 "Prints extended information about the layout of the heap " \
2004 "when -XX:+PrintHeapAtGC is set") \
2005 \
2006 product(bool, PrintHeapAtSIGBREAK, true, \
2007 "Print heap layout in response to SIGBREAK") \
2008 \
2009 manageable(bool, PrintClassHistogramBeforeFullGC, false, \
2010 "Print a class histogram before any major stop-world GC") \
2011 \
2012 manageable(bool, PrintClassHistogramAfterFullGC, false, \
2013 "Print a class histogram after any major stop-world GC") \
2014 \
2015 manageable(bool, PrintClassHistogram, false, \
2016 "Print a histogram of class instances") \
2017 \
2018 develop(bool, TraceWorkGang, false, \
2019 "Trace activities of work gangs") \
2020 \
2021 product(bool, TraceParallelOldGCTasks, false, \
2022 "Trace multithreaded GC activity") \
2023 \
2024 develop(bool, TraceBlockOffsetTable, false, \
2025 "Print BlockOffsetTable maps") \
2026 \
2027 develop(bool, TraceCardTableModRefBS, false, \
2028 "Print CardTableModRefBS maps") \
2029 \
2030 develop(bool, TraceGCTaskManager, false, \
2031 "Trace actions of the GC task manager") \
2032 \
2033 develop(bool, TraceGCTaskQueue, false, \
2034 "Trace actions of the GC task queues") \
2035 \
2036 develop(bool, TraceGCTaskThread, false, \
2037 "Trace actions of the GC task threads") \
2038 \
2039 product(bool, PrintParallelOldGCPhaseTimes, false, \
2040 "Print the time taken by each parallel old gc phase." \
2041 "PrintGCDetails must also be enabled.") \
2042 \
2043 develop(bool, TraceParallelOldGCMarkingPhase, false, \
2044 "Trace parallel old gc marking phase") \
2045 \
2046 develop(bool, TraceParallelOldGCSummaryPhase, false, \
2047 "Trace parallel old gc summary phase") \
2048 \
2049 develop(bool, TraceParallelOldGCCompactionPhase, false, \
2050 "Trace parallel old gc compaction phase") \
2051 \
2052 develop(bool, TraceParallelOldGCDensePrefix, false, \
2053 "Trace parallel old gc dense prefix computation") \
2054 \
2055 develop(bool, IgnoreLibthreadGPFault, false, \
2056 "Suppress workaround for libthread GP fault") \
2057 \
2058 product(bool, PrintJNIGCStalls, false, \
2059 "Print diagnostic message when GC is stalled" \
2060 "by JNI critical section") \
2061 \
2062 /* JVMTI heap profiling */ \
2063 \
2064 diagnostic(bool, TraceJVMTIObjectTagging, false, \
2065 "Trace JVMTI object tagging calls") \
2066 \
2067 diagnostic(bool, VerifyBeforeIteration, false, \
2068 "Verify memory system before JVMTI iteration") \
2069 \
2070 /* compiler interface */ \
2071 \
2072 develop(bool, CIPrintCompilerName, false, \
2073 "when CIPrint is active, print the name of the active compiler") \
2074 \
2075 develop(bool, CIPrintCompileQueue, false, \
2076 "display the contents of the compile queue whenever a " \
2077 "compilation is enqueued") \
2078 \
2079 develop(bool, CIPrintRequests, false, \
2080 "display every request for compilation") \
2081 \
2082 product(bool, CITime, false, \
2083 "collect timing information for compilation") \
2084 \
2085 develop(bool, CITimeEach, false, \
2086 "display timing information after each successful compilation") \
2087 \
2088 develop(bool, CICountOSR, true, \
2089 "use a separate counter when assigning ids to osr compilations") \
2090 \
2091 develop(bool, CICompileNatives, true, \
2092 "compile native methods if supported by the compiler") \
2093 \
2094 develop_pd(bool, CICompileOSR, \
2095 "compile on stack replacement methods if supported by the " \
2096 "compiler") \
2097 \
2098 develop(bool, CIPrintMethodCodes, false, \
2099 "print method bytecodes of the compiled code") \
2100 \
2101 develop(bool, CIPrintTypeFlow, false, \
2102 "print the results of ciTypeFlow analysis") \
2103 \
2104 develop(bool, CITraceTypeFlow, false, \
2105 "detailed per-bytecode tracing of ciTypeFlow analysis") \
2106 \
2107 develop(intx, CICloneLoopTestLimit, 100, \
2108 "size limit for blocks heuristically cloned in ciTypeFlow") \
2109 \
2110 /* temp diagnostics */ \
2111 \
2112 diagnostic(bool, TraceRedundantCompiles, false, \
2113 "Have compile broker print when a request already in the queue is"\
2114 " requested again") \
2115 \
2116 diagnostic(bool, InitialCompileFast, false, \
2117 "Initial compile at CompLevel_fast_compile") \
2118 \
2119 diagnostic(bool, InitialCompileReallyFast, false, \
2120 "Initial compile at CompLevel_really_fast_compile (no profile)") \
2121 \
2122 diagnostic(bool, FullProfileOnReInterpret, true, \
2123 "On re-interpret unc-trap compile next at CompLevel_fast_compile")\
2124 \
2125 /* compiler */ \
2126 \
2127 product(intx, CICompilerCount, CI_COMPILER_COUNT, \
2128 "Number of compiler threads to run") \
2129 \
2130 product(intx, CompilationPolicyChoice, 0, \
2131 "which compilation policy (0/1)") \
2132 \
2133 develop(bool, UseStackBanging, true, \
2134 "use stack banging for stack overflow checks (required for " \
2135 "proper StackOverflow handling; disable only to measure cost " \
2136 "of stackbanging)") \
2137 \
2138 develop(bool, Use24BitFPMode, true, \
2139 "Set 24-bit FPU mode on a per-compile basis ") \
2140 \
2141 develop(bool, Use24BitFP, true, \
2142 "use FP instructions that produce 24-bit precise results") \
2143 \
2144 develop(bool, UseStrictFP, true, \
2145 "use strict fp if modifier strictfp is set") \
2146 \
2147 develop(bool, GenerateSynchronizationCode, true, \
2148 "generate locking/unlocking code for synchronized methods and " \
2149 "monitors") \
2150 \
2151 develop(bool, GenerateCompilerNullChecks, true, \
2152 "Generate explicit null checks for loads/stores/calls") \
2153 \
2154 develop(bool, GenerateRangeChecks, true, \
2155 "Generate range checks for array accesses") \
2156 \
2157 develop_pd(bool, ImplicitNullChecks, \
2158 "generate code for implicit null checks") \
2159 \
2160 product(bool, PrintSafepointStatistics, false, \
2161 "print statistics about safepoint synchronization") \
2162 \
2163 product(intx, PrintSafepointStatisticsCount, 300, \
2164 "total number of safepoint statistics collected " \
2165 "before printing them out") \
2166 \
2167 product(intx, PrintSafepointStatisticsTimeout, -1, \
2168 "print safepoint statistics only when safepoint takes" \
2169 " more than PrintSafepointSatisticsTimeout in millis") \
2170 \
2171 develop(bool, InlineAccessors, true, \
2172 "inline accessor methods (get/set)") \
2173 \
2174 product(bool, Inline, true, \
2175 "enable inlining") \
2176 \
2177 product(bool, ClipInlining, true, \
2178 "clip inlining if aggregate method exceeds DesiredMethodLimit") \
2179 \
2180 develop(bool, UseCHA, true, \
2181 "enable CHA") \
2182 \
2183 product(bool, UseTypeProfile, true, \
2184 "Check interpreter profile for historically monomorphic calls") \
2185 \
2186 product(intx, TypeProfileMajorReceiverPercent, 90, \
2187 "% of major receiver type to all profiled receivers") \
2188 \
2189 notproduct(bool, TimeCompiler, false, \
2190 "time the compiler") \
2191 \
2192 notproduct(bool, TimeCompiler2, false, \
2193 "detailed time the compiler (requires +TimeCompiler)") \
2194 \
2195 diagnostic(bool, PrintInlining, false, \
2196 "prints inlining optimizations") \
2197 \
2198 diagnostic(bool, PrintIntrinsics, false, \
2199 "prints attempted and successful inlining of intrinsics") \
2200 \
2201 product(bool, UseCountLeadingZerosInstruction, false, \
2202 "Use count leading zeros instruction") \
2203 \
2204 product(bool, UsePopCountInstruction, false, \
2205 "Use population count instruction") \
2206 \
2207 diagnostic(ccstrlist, DisableIntrinsic, "", \
2208 "do not expand intrinsics whose (internal) names appear here") \
2209 \
2210 develop(bool, StressReflectiveCode, false, \
2211 "Use inexact types at allocations, etc., to test reflection") \
2212 \
2213 develop(bool, EagerInitialization, false, \
2214 "Eagerly initialize classes if possible") \
2215 \
2216 product(bool, Tier1UpdateMethodData, trueInTiered, \
2217 "Update methodDataOops in Tier1-generated code") \
2218 \
2219 develop(bool, TraceMethodReplacement, false, \
2220 "Print when methods are replaced do to recompilation") \
2221 \
2222 develop(bool, PrintMethodFlushing, false, \
2223 "print the nmethods being flushed") \
2224 \
2225 notproduct(bool, LogMultipleMutexLocking, false, \
2226 "log locking and unlocking of mutexes (only if multiple locks " \
2227 "are held)") \
2228 \
2229 develop(bool, UseRelocIndex, false, \
2230 "use an index to speed random access to relocations") \
2231 \
2232 develop(bool, StressCodeBuffers, false, \
2233 "Exercise code buffer expansion and other rare state changes") \
2234 \
2235 diagnostic(bool, DebugNonSafepoints, trueInDebug, \
2236 "Generate extra debugging info for non-safepoints in nmethods") \
2237 \
2238 diagnostic(bool, DebugInlinedCalls, true, \
2239 "If false, restricts profiled locations to the root method only") \
2240 \
2241 product(bool, PrintVMOptions, trueInDebug, \
2242 "print VM flag settings") \
2243 \
2244 product(bool, IgnoreUnrecognizedVMOptions, false, \
2245 "Ignore unrecognized VM options") \
2246 \
2247 diagnostic(bool, SerializeVMOutput, true, \
2248 "Use a mutex to serialize output to tty and hotspot.log") \
2249 \
2250 diagnostic(bool, DisplayVMOutput, true, \
2251 "Display all VM output on the tty, independently of LogVMOutput") \
2252 \
2253 diagnostic(bool, LogVMOutput, trueInDebug, \
2254 "Save VM output to hotspot.log, or to LogFile") \
2255 \
2256 diagnostic(ccstr, LogFile, NULL, \
2257 "If LogVMOutput is on, save VM output to this file [hotspot.log]") \
2258 \
2259 product(ccstr, ErrorFile, NULL, \
2260 "If an error occurs, save the error data to this file " \
2261 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \
2262 \
2263 product(bool, DisplayVMOutputToStderr, false, \
2264 "If DisplayVMOutput is true, display all VM output to stderr") \
2265 \
2266 product(bool, DisplayVMOutputToStdout, false, \
2267 "If DisplayVMOutput is true, display all VM output to stdout") \
2268 \
2269 product(bool, UseHeavyMonitors, false, \
2270 "use heavyweight instead of lightweight Java monitors") \
2271 \
2272 notproduct(bool, PrintSymbolTableSizeHistogram, false, \
2273 "print histogram of the symbol table") \
2274 \
2275 notproduct(bool, ExitVMOnVerifyError, false, \
2276 "standard exit from VM if bytecode verify error " \
2277 "(only in debug mode)") \
2278 \
2279 notproduct(ccstr, AbortVMOnException, NULL, \
2280 "Call fatal if this exception is thrown. Example: " \
2281 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \
2282 \
2283 develop(bool, DebugVtables, false, \
2284 "add debugging code to vtable dispatch") \
2285 \
2286 develop(bool, PrintVtables, false, \
2287 "print vtables when printing klass") \
2288 \
2289 notproduct(bool, PrintVtableStats, false, \
2290 "print vtables stats at end of run") \
2291 \
2292 develop(bool, TraceCreateZombies, false, \
2293 "trace creation of zombie nmethods") \
2294 \
2295 notproduct(bool, IgnoreLockingAssertions, false, \
2296 "disable locking assertions (for speed)") \
2297 \
2298 notproduct(bool, VerifyLoopOptimizations, false, \
2299 "verify major loop optimizations") \
2300 \
2301 product(bool, RangeCheckElimination, true, \
2302 "Split loop iterations to eliminate range checks") \
2303 \
2304 develop_pd(bool, UncommonNullCast, \
2305 "track occurrences of null in casts; adjust compiler tactics") \
2306 \
2307 develop(bool, TypeProfileCasts, true, \
2308 "treat casts like calls for purposes of type profiling") \
2309 \
2310 develop(bool, MonomorphicArrayCheck, true, \
2311 "Uncommon-trap array store checks that require full type check") \
2312 \
2313 develop(bool, DelayCompilationDuringStartup, true, \
2314 "Delay invoking the compiler until main application class is " \
2315 "loaded") \
2316 \
2317 develop(bool, CompileTheWorld, false, \
2318 "Compile all methods in all classes in bootstrap class path " \
2319 "(stress test)") \
2320 \
2321 develop(bool, CompileTheWorldPreloadClasses, true, \
2322 "Preload all classes used by a class before start loading") \
2323 \
2324 notproduct(bool, CompileTheWorldIgnoreInitErrors, false, \
2325 "Compile all methods although class initializer failed") \
2326 \
2327 develop(bool, TraceIterativeGVN, false, \
2328 "Print progress during Iterative Global Value Numbering") \
2329 \
2330 develop(bool, FillDelaySlots, true, \
2331 "Fill delay slots (on SPARC only)") \
2332 \
2333 develop(bool, VerifyIterativeGVN, false, \
2334 "Verify Def-Use modifications during sparse Iterative Global " \
2335 "Value Numbering") \
2336 \
2337 notproduct(bool, TracePhaseCCP, false, \
2338 "Print progress during Conditional Constant Propagation") \
2339 \
2340 develop(bool, TimeLivenessAnalysis, false, \
2341 "Time computation of bytecode liveness analysis") \
2342 \
2343 develop(bool, TraceLivenessGen, false, \
2344 "Trace the generation of liveness analysis information") \
2345 \
2346 notproduct(bool, TraceLivenessQuery, false, \
2347 "Trace queries of liveness analysis information") \
2348 \
2349 notproduct(bool, CollectIndexSetStatistics, false, \
2350 "Collect information about IndexSets") \
2351 \
2352 develop(bool, PrintDominators, false, \
2353 "Print out dominator trees for GVN") \
2354 \
2355 develop(bool, UseLoopSafepoints, true, \
2356 "Generate Safepoint nodes in every loop") \
2357 \
2358 notproduct(bool, TraceCISCSpill, false, \
2359 "Trace allocators use of cisc spillable instructions") \
2360 \
2361 notproduct(bool, TraceSpilling, false, \
2362 "Trace spilling") \
2363 \
2364 develop(bool, DeutschShiffmanExceptions, true, \
2365 "Fast check to find exception handler for precisely typed " \
2366 "exceptions") \
2367 \
2368 product(bool, SplitIfBlocks, true, \
2369 "Clone compares and control flow through merge points to fold " \
2370 "some branches") \
2371 \
2372 develop(intx, FastAllocateSizeLimit, 128*K, \
2373 /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \
2374 "Inline allocations larger than this in doublewords must go slow")\
2375 \
2376 product(bool, AggressiveOpts, false, \
2377 "Enable aggressive optimizations - see arguments.cpp") \
2378 \
2379 product(bool, UseStringCache, false, \
2380 "Enable String cache capabilities on String.java") \
2381 \
2382 /* statistics */ \
2383 develop(bool, UseVTune, false, \
2384 "enable support for Intel's VTune profiler") \
2385 \
2386 develop(bool, CountCompiledCalls, false, \
2387 "counts method invocations") \
2388 \
2389 notproduct(bool, CountRuntimeCalls, false, \
2390 "counts VM runtime calls") \
2391 \
2392 develop(bool, CountJNICalls, false, \
2393 "counts jni method invocations") \
2394 \
2395 notproduct(bool, CountJVMCalls, false, \
2396 "counts jvm method invocations") \
2397 \
2398 notproduct(bool, CountRemovableExceptions, false, \
2399 "count exceptions that could be replaced by branches due to " \
2400 "inlining") \
2401 \
2402 notproduct(bool, ICMissHistogram, false, \
2403 "produce histogram of IC misses") \
2404 \
2405 notproduct(bool, PrintClassStatistics, false, \
2406 "prints class statistics at end of run") \
2407 \
2408 notproduct(bool, PrintMethodStatistics, false, \
2409 "prints method statistics at end of run") \
2410 \
2411 /* interpreter */ \
2412 develop(bool, ClearInterpreterLocals, false, \
2413 "Always clear local variables of interpreter activations upon " \
2414 "entry") \
2415 \
2416 product_pd(bool, RewriteBytecodes, \
2417 "Allow rewriting of bytecodes (bytecodes are not immutable)") \
2418 \
2419 product_pd(bool, RewriteFrequentPairs, \
2420 "Rewrite frequently used bytecode pairs into a single bytecode") \
2421 \
2422 diagnostic(bool, PrintInterpreter, false, \
2423 "Prints the generated interpreter code") \
2424 \
2425 product(bool, UseInterpreter, true, \
2426 "Use interpreter for non-compiled methods") \
2427 \
2428 develop(bool, UseFastSignatureHandlers, true, \
2429 "Use fast signature handlers for native calls") \
2430 \
2431 develop(bool, UseV8InstrsOnly, false, \
2432 "Use SPARC-V8 Compliant instruction subset") \
2433 \
2434 product(bool, UseNiagaraInstrs, false, \
2435 "Use Niagara-efficient instruction subset") \
2436 \
2437 develop(bool, UseCASForSwap, false, \
2438 "Do not use swap instructions, but only CAS (in a loop) on SPARC")\
2439 \
2440 product(bool, UseLoopCounter, true, \
2441 "Increment invocation counter on backward branch") \
2442 \
2443 product(bool, UseFastEmptyMethods, true, \
2444 "Use fast method entry code for empty methods") \
2445 \
2446 product(bool, UseFastAccessorMethods, true, \
2447 "Use fast method entry code for accessor methods") \
2448 \
2449 product_pd(bool, UseOnStackReplacement, \
2450 "Use on stack replacement, calls runtime if invoc. counter " \
2451 "overflows in loop") \
2452 \
2453 notproduct(bool, TraceOnStackReplacement, false, \
2454 "Trace on stack replacement") \
2455 \
2456 develop(bool, PoisonOSREntry, true, \
2457 "Detect abnormal calls to OSR code") \
2458 \
2459 product_pd(bool, PreferInterpreterNativeStubs, \
2460 "Use always interpreter stubs for native methods invoked via " \
2461 "interpreter") \
2462 \
2463 develop(bool, CountBytecodes, false, \
2464 "Count number of bytecodes executed") \
2465 \
2466 develop(bool, PrintBytecodeHistogram, false, \
2467 "Print histogram of the executed bytecodes") \
2468 \
2469 develop(bool, PrintBytecodePairHistogram, false, \
2470 "Print histogram of the executed bytecode pairs") \
2471 \
2472 diagnostic(bool, PrintSignatureHandlers, false, \
2473 "Print code generated for native method signature handlers") \
2474 \
2475 develop(bool, VerifyOops, false, \
2476 "Do plausibility checks for oops") \
2477 \
2478 develop(bool, CheckUnhandledOops, false, \
2479 "Check for unhandled oops in VM code") \
2480 \
2481 develop(bool, VerifyJNIFields, trueInDebug, \
2482 "Verify jfieldIDs for instance fields") \
2483 \
2484 notproduct(bool, VerifyJNIEnvThread, false, \
2485 "Verify JNIEnv.thread == Thread::current() when entering VM " \
2486 "from JNI") \
2487 \
2488 develop(bool, VerifyFPU, false, \
2489 "Verify FPU state (check for NaN's, etc.)") \
2490 \
2491 develop(bool, VerifyThread, false, \
2492 "Watch the thread register for corruption (SPARC only)") \
2493 \
2494 develop(bool, VerifyActivationFrameSize, false, \
2495 "Verify that activation frame didn't become smaller than its " \
2496 "minimal size") \
2497 \
2498 develop(bool, TraceFrequencyInlining, false, \
2499 "Trace frequency based inlining") \
2500 \
2501 notproduct(bool, TraceTypeProfile, false, \
2502 "Trace type profile") \
2503 \
2504 develop_pd(bool, InlineIntrinsics, \
2505 "Inline intrinsics that can be statically resolved") \
2506 \
2507 product_pd(bool, ProfileInterpreter, \
2508 "Profile at the bytecode level during interpretation") \
2509 \
2510 develop_pd(bool, ProfileTraps, \
2511 "Profile deoptimization traps at the bytecode level") \
2512 \
2513 product(intx, ProfileMaturityPercentage, 20, \
2514 "number of method invocations/branches (expressed as % of " \
2515 "CompileThreshold) before using the method's profile") \
2516 \
2517 develop(bool, PrintMethodData, false, \
2518 "Print the results of +ProfileInterpreter at end of run") \
2519 \
2520 develop(bool, VerifyDataPointer, trueInDebug, \
2521 "Verify the method data pointer during interpreter profiling") \
2522 \
2523 develop(bool, VerifyCompiledCode, false, \
2524 "Include miscellaneous runtime verifications in nmethod code; " \
2525 "off by default because it disturbs nmethod size heuristics.") \
2526 \
2527 \
2528 /* compilation */ \
2529 product(bool, UseCompiler, true, \
2530 "use compilation") \
2531 \
2532 develop(bool, TraceCompilationPolicy, false, \
2533 "Trace compilation policy") \
2534 \
2535 develop(bool, TimeCompilationPolicy, false, \
2536 "Time the compilation policy") \
2537 \
2538 product(bool, UseCounterDecay, true, \
2539 "adjust recompilation counters") \
2540 \
2541 develop(intx, CounterHalfLifeTime, 30, \
2542 "half-life time of invocation counters (in secs)") \
2543 \
2544 develop(intx, CounterDecayMinIntervalLength, 500, \
2545 "Min. ms. between invocation of CounterDecay") \
2546 \
2547 product(bool, AlwaysCompileLoopMethods, false, \
2548 "when using recompilation, never interpret methods " \
2549 "containing loops") \
2550 \
2551 product(bool, DontCompileHugeMethods, true, \
2552 "don't compile methods > HugeMethodLimit") \
2553 \
2554 /* Bytecode escape analysis estimation. */ \
2555 product(bool, EstimateArgEscape, true, \
2556 "Analyze bytecodes to estimate escape state of arguments") \
2557 \
2558 product(intx, BCEATraceLevel, 0, \
2559 "How much tracing to do of bytecode escape analysis estimates") \
2560 \
2561 product(intx, MaxBCEAEstimateLevel, 5, \
2562 "Maximum number of nested calls that are analyzed by BC EA.") \
2563 \
2564 product(intx, MaxBCEAEstimateSize, 150, \
2565 "Maximum bytecode size of a method to be analyzed by BC EA.") \
2566 \
2567 product(intx, AllocatePrefetchStyle, 1, \
2568 "0 = no prefetch, " \
2569 "1 = prefetch instructions for each allocation, " \
2570 "2 = use TLAB watermark to gate allocation prefetch") \
2571 \
2572 product(intx, AllocatePrefetchDistance, -1, \
2573 "Distance to prefetch ahead of allocation pointer") \
2574 \
2575 product(intx, AllocatePrefetchLines, 1, \
2576 "Number of lines to prefetch ahead of allocation pointer") \
2577 \
2578 product(intx, AllocatePrefetchStepSize, 16, \
2579 "Step size in bytes of sequential prefetch instructions") \
2580 \
2581 product(intx, AllocatePrefetchInstr, 0, \
2582 "Prefetch instruction to prefetch ahead of allocation pointer") \
2583 \
2584 product(intx, ReadPrefetchInstr, 0, \
2585 "Prefetch instruction to prefetch ahead") \
2586 \
2587 /* deoptimization */ \
2588 develop(bool, TraceDeoptimization, false, \
2589 "Trace deoptimization") \
2590 \
2591 develop(bool, DebugDeoptimization, false, \
2592 "Tracing various information while debugging deoptimization") \
2593 \
2594 product(intx, SelfDestructTimer, 0, \
2595 "Will cause VM to terminate after a given time (in minutes) " \
2596 "(0 means off)") \
2597 \
2598 product(intx, MaxJavaStackTraceDepth, 1024, \
2599 "Max. no. of lines in the stack trace for Java exceptions " \
2600 "(0 means all)") \
2601 \
2602 develop(intx, GuaranteedSafepointInterval, 1000, \
2603 "Guarantee a safepoint (at least) every so many milliseconds " \
2604 "(0 means none)") \
2605 \
2606 product(intx, SafepointTimeoutDelay, 10000, \
2607 "Delay in milliseconds for option SafepointTimeout") \
2608 \
2609 product(intx, NmethodSweepFraction, 4, \
2610 "Number of invocations of sweeper to cover all nmethods") \
2611 \
2612 notproduct(intx, MemProfilingInterval, 500, \
2613 "Time between each invocation of the MemProfiler") \
2614 \
2615 develop(intx, MallocCatchPtr, -1, \
2616 "Hit breakpoint when mallocing/freeing this pointer") \
2617 \
2618 notproduct(intx, AssertRepeat, 1, \
2619 "number of times to evaluate expression in assert " \
2620 "(to estimate overhead); only works with -DUSE_REPEATED_ASSERTS") \
2621 \
2622 notproduct(ccstrlist, SuppressErrorAt, "", \
2623 "List of assertions (file:line) to muzzle") \
2624 \
2625 notproduct(uintx, HandleAllocationLimit, 1024, \
2626 "Threshold for HandleMark allocation when +TraceHandleAllocation "\
2627 "is used") \
2628 \
2629 develop(uintx, TotalHandleAllocationLimit, 1024, \
2630 "Threshold for total handle allocation when " \
2631 "+TraceHandleAllocation is used") \
2632 \
2633 develop(intx, StackPrintLimit, 100, \
2634 "number of stack frames to print in VM-level stack dump") \
2635 \
2636 notproduct(intx, MaxElementPrintSize, 256, \
2637 "maximum number of elements to print") \
2638 \
2639 notproduct(intx, MaxSubklassPrintSize, 4, \
2640 "maximum number of subklasses to print when printing klass") \
2641 \
2642 develop(intx, MaxInlineLevel, 9, \
2643 "maximum number of nested calls that are inlined") \
2644 \
2645 develop(intx, MaxRecursiveInlineLevel, 1, \
2646 "maximum number of nested recursive calls that are inlined") \
2647 \
2648 product_pd(intx, InlineSmallCode, \
2649 "Only inline already compiled methods if their code size is " \
2650 "less than this") \
2651 \
2652 product(intx, MaxInlineSize, 35, \
2653 "maximum bytecode size of a method to be inlined") \
2654 \
2655 product_pd(intx, FreqInlineSize, \
2656 "maximum bytecode size of a frequent method to be inlined") \
2657 \
2658 develop(intx, MaxTrivialSize, 6, \
2659 "maximum bytecode size of a trivial method to be inlined") \
2660 \
2661 develop(intx, MinInliningThreshold, 250, \
2662 "min. invocation count a method needs to have to be inlined") \
2663 \
2664 develop(intx, AlignEntryCode, 4, \
2665 "aligns entry code to specified value (in bytes)") \
2666 \
2667 develop(intx, MethodHistogramCutoff, 100, \
2668 "cutoff value for method invoc. histogram (+CountCalls)") \
2669 \
2670 develop(intx, ProfilerNumberOfInterpretedMethods, 25, \
2671 "# of interpreted methods to show in profile") \
2672 \
2673 develop(intx, ProfilerNumberOfCompiledMethods, 25, \
2674 "# of compiled methods to show in profile") \
2675 \
2676 develop(intx, ProfilerNumberOfStubMethods, 25, \
2677 "# of stub methods to show in profile") \
2678 \
2679 develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \
2680 "# of runtime stub nodes to show in profile") \
2681 \
2682 product(intx, ProfileIntervalsTicks, 100, \
2683 "# of ticks between printing of interval profile " \
2684 "(+ProfileIntervals)") \
2685 \
2686 notproduct(intx, ScavengeALotInterval, 1, \
2687 "Interval between which scavenge will occur with +ScavengeALot") \
2688 \
2689 notproduct(intx, FullGCALotInterval, 1, \
2690 "Interval between which full gc will occur with +FullGCALot") \
2691 \
2692 notproduct(intx, FullGCALotStart, 0, \
2693 "For which invocation to start FullGCAlot") \
2694 \
2695 notproduct(intx, FullGCALotDummies, 32*K, \
2696 "Dummy object allocated with +FullGCALot, forcing all objects " \
2697 "to move") \
2698 \
2699 develop(intx, DontYieldALotInterval, 10, \
2700 "Interval between which yields will be dropped (milliseconds)") \
2701 \
2702 develop(intx, MinSleepInterval, 1, \
2703 "Minimum sleep() interval (milliseconds) when " \
2704 "ConvertSleepToYield is off (used for SOLARIS)") \
2705 \
2706 product(intx, EventLogLength, 2000, \
2707 "maximum nof events in event log") \
2708 \
2709 develop(intx, ProfilerPCTickThreshold, 15, \
2710 "Number of ticks in a PC buckets to be a hotspot") \
2711 \
2712 notproduct(intx, DeoptimizeALotInterval, 5, \
2713 "Number of exits until DeoptimizeALot kicks in") \
2714 \
2715 notproduct(intx, ZombieALotInterval, 5, \
2716 "Number of exits until ZombieALot kicks in") \
2717 \
2718 develop(bool, StressNonEntrant, false, \
2719 "Mark nmethods non-entrant at registration") \
2720 \
2721 diagnostic(intx, MallocVerifyInterval, 0, \
2722 "if non-zero, verify C heap after every N calls to " \
2723 "malloc/realloc/free") \
2724 \
2725 diagnostic(intx, MallocVerifyStart, 0, \
2726 "if non-zero, start verifying C heap after Nth call to " \
2727 "malloc/realloc/free") \
2728 \
2729 product(intx, TypeProfileWidth, 2, \
2730 "number of receiver types to record in call/cast profile") \
2731 \
2732 develop(intx, BciProfileWidth, 2, \
2733 "number of return bci's to record in ret profile") \
2734 \
2735 product(intx, PerMethodRecompilationCutoff, 400, \
2736 "After recompiling N times, stay in the interpreter (-1=>'Inf')") \
2737 \
2738 product(intx, PerBytecodeRecompilationCutoff, 100, \
2739 "Per-BCI limit on repeated recompilation (-1=>'Inf')") \
2740 \
2741 product(intx, PerMethodTrapLimit, 100, \
2742 "Limit on traps (of one kind) in a method (includes inlines)") \
2743 \
2744 product(intx, PerBytecodeTrapLimit, 4, \
2745 "Limit on traps (of one kind) at a particular BCI") \
2746 \
2747 develop(intx, FreqCountInvocations, 1, \
2748 "Scaling factor for branch frequencies (deprecated)") \
2749 \
2750 develop(intx, InlineFrequencyRatio, 20, \
2751 "Ratio of call site execution to caller method invocation") \
2752 \
2753 develop_pd(intx, InlineFrequencyCount, \
2754 "Count of call site execution necessary to trigger frequent " \
2755 "inlining") \
2756 \
2757 develop(intx, InlineThrowCount, 50, \
2758 "Force inlining of interpreted methods that throw this often") \
2759 \
2760 develop(intx, InlineThrowMaxSize, 200, \
2761 "Force inlining of throwing methods smaller than this") \
2762 \
2763 product(intx, AliasLevel, 3, \
2764 "0 for no aliasing, 1 for oop/field/static/array split, " \
2765 "2 for class split, 3 for unique instances") \
2766 \
2767 develop(bool, VerifyAliases, false, \
2768 "perform extra checks on the results of alias analysis") \
2769 \
2770 develop(intx, ProfilerNodeSize, 1024, \
2771 "Size in K to allocate for the Profile Nodes of each thread") \
2772 \
2773 develop(intx, V8AtomicOperationUnderLockSpinCount, 50, \
2774 "Number of times to spin wait on a v8 atomic operation lock") \
2775 \
2776 product(intx, ReadSpinIterations, 100, \
2777 "Number of read attempts before a yield (spin inner loop)") \
2778 \
2779 product_pd(intx, PreInflateSpin, \
2780 "Number of times to spin wait before inflation") \
2781 \
2782 product(intx, PreBlockSpin, 10, \
2783 "Number of times to spin in an inflated lock before going to " \
2784 "an OS lock") \
2785 \
2786 /* gc parameters */ \
2787 product(uintx, MaxHeapSize, ScaleForWordSize(64*M), \
2788 "Default maximum size for object heap (in bytes)") \
2789 \
2790 product_pd(uintx, NewSize, \
2791 "Default size of new generation (in bytes)") \
2792 \
2793 product(uintx, MaxNewSize, max_uintx, \
2794 "Maximum size of new generation (in bytes)") \
2795 \
2796 product(uintx, PretenureSizeThreshold, 0, \
2797 "Max size in bytes of objects allocated in DefNew generation") \
2798 \
2799 product_pd(uintx, TLABSize, \
2800 "Default (or starting) size of TLAB (in bytes)") \
2801 \
2802 product(uintx, MinTLABSize, 2*K, \
2803 "Minimum allowed TLAB size (in bytes)") \
2804 \
2805 product(uintx, TLABAllocationWeight, 35, \
2806 "Allocation averaging weight") \
2807 \
2808 product(uintx, TLABWasteTargetPercent, 1, \
2809 "Percentage of Eden that can be wasted") \
2810 \
2811 product(uintx, TLABRefillWasteFraction, 64, \
2812 "Max TLAB waste at a refill (internal fragmentation)") \
2813 \
2814 product(uintx, TLABWasteIncrement, 4, \
2815 "Increment allowed waste at slow allocation") \
2816 \
2817 product_pd(intx, SurvivorRatio, \
2818 "Ratio of eden/survivor space size") \
2819 \
2820 product_pd(intx, NewRatio, \
2821 "Ratio of new/old generation sizes") \
2822 \
2823 product(uintx, MaxLiveObjectEvacuationRatio, 100, \
2824 "Max percent of eden objects that will be live at scavenge") \
2825 \
2826 product_pd(uintx, NewSizeThreadIncrease, \
2827 "Additional size added to desired new generation size per " \
2828 "non-daemon thread (in bytes)") \
2829 \
2830 product(uintx, OldSize, ScaleForWordSize(4096*K), \
2831 "Default size of tenured generation (in bytes)") \
2832 \
2833 product_pd(uintx, PermSize, \
2834 "Default size of permanent generation (in bytes)") \
2835 \
2836 product_pd(uintx, MaxPermSize, \
2837 "Maximum size of permanent generation (in bytes)") \
2838 \
2839 product(uintx, MinHeapFreeRatio, 40, \
2840 "Min percentage of heap free after GC to avoid expansion") \
2841 \
2842 product(uintx, MaxHeapFreeRatio, 70, \
2843 "Max percentage of heap free after GC to avoid shrinking") \
2844 \
2845 product(intx, SoftRefLRUPolicyMSPerMB, 1000, \
2846 "Number of milliseconds per MB of free space in the heap") \
2847 \
2848 product(uintx, MinHeapDeltaBytes, ScaleForWordSize(128*K), \
2849 "Min change in heap space due to GC (in bytes)") \
2850 \
2851 product(uintx, MinPermHeapExpansion, ScaleForWordSize(256*K), \
2852 "Min expansion of permanent heap (in bytes)") \
2853 \
2854 product(uintx, MaxPermHeapExpansion, ScaleForWordSize(4*M), \
2855 "Max expansion of permanent heap without full GC (in bytes)") \
2856 \
2857 product(intx, QueuedAllocationWarningCount, 0, \
2858 "Number of times an allocation that queues behind a GC " \
2859 "will retry before printing a warning") \
2860 \
2861 diagnostic(uintx, VerifyGCStartAt, 0, \
2862 "GC invoke count where +VerifyBefore/AfterGC kicks in") \
2863 \
2864 diagnostic(intx, VerifyGCLevel, 0, \
2865 "Generation level at which to start +VerifyBefore/AfterGC") \
2866 \
2867 develop(uintx, ExitAfterGCNum, 0, \
2868 "If non-zero, exit after this GC.") \
2869 \
2870 product(intx, MaxTenuringThreshold, 15, \
2871 "Maximum value for tenuring threshold") \
2872 \
2873 product(intx, InitialTenuringThreshold, 7, \
2874 "Initial value for tenuring threshold") \
2875 \
2876 product(intx, TargetSurvivorRatio, 50, \
2877 "Desired percentage of survivor space used after scavenge") \
2878 \
2879 product(uintx, MarkSweepDeadRatio, 5, \
2880 "Percentage (0-100) of the old gen allowed as dead wood." \
2881 "Serial mark sweep treats this as both the min and max value." \
2882 "CMS uses this value only if it falls back to mark sweep." \
2883 "Par compact uses a variable scale based on the density of the" \
2884 "generation and treats this as the max value when the heap is" \
2885 "either completely full or completely empty. Par compact also" \
2886 "has a smaller default value; see arguments.cpp.") \
2887 \
2888 product(uintx, PermMarkSweepDeadRatio, 20, \
2889 "Percentage (0-100) of the perm gen allowed as dead wood." \
2890 "See MarkSweepDeadRatio for collector-specific comments.") \
2891 \
2892 product(intx, MarkSweepAlwaysCompactCount, 4, \
2893 "How often should we fully compact the heap (ignoring the dead " \
2894 "space parameters)") \
2895 \
2896 product(intx, PrintCMSStatistics, 0, \
2897 "Statistics for CMS") \
2898 \
2899 product(bool, PrintCMSInitiationStatistics, false, \
2900 "Statistics for initiating a CMS collection") \
2901 \
2902 product(intx, PrintFLSStatistics, 0, \
2903 "Statistics for CMS' FreeListSpace") \
2904 \
2905 product(intx, PrintFLSCensus, 0, \
2906 "Census for CMS' FreeListSpace") \
2907 \
2908 develop(uintx, GCExpandToAllocateDelayMillis, 0, \
2909 "Delay in ms between expansion and allocation") \
2910 \
2911 product(intx, DeferThrSuspendLoopCount, 4000, \
2912 "(Unstable) Number of times to iterate in safepoint loop " \
2913 " before blocking VM threads ") \
2914 \
2915 product(intx, DeferPollingPageLoopCount, -1, \
2916 "(Unsafe,Unstable) Number of iterations in safepoint loop " \
2917 "before changing safepoint polling page to RO ") \
2918 \
2919 product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \
2920 \
2921 product(bool, UseDepthFirstScavengeOrder, true, \
2922 "true: the scavenge order will be depth-first, " \
2923 "false: the scavenge order will be breadth-first") \
2924 \
2925 product(bool, PSChunkLargeArrays, true, \
2926 "true: process large arrays in chunks") \
2927 \
2928 product(uintx, GCDrainStackTargetSize, 64, \
2929 "how many entries we'll try to leave on the stack during " \
2930 "parallel GC") \
2931 \
2932 /* stack parameters */ \
2933 product_pd(intx, StackYellowPages, \
2934 "Number of yellow zone (recoverable overflows) pages") \
2935 \
2936 product_pd(intx, StackRedPages, \
2937 "Number of red zone (unrecoverable overflows) pages") \
2938 \
2939 product_pd(intx, StackShadowPages, \
2940 "Number of shadow zone (for overflow checking) pages" \
2941 " this should exceed the depth of the VM and native call stack") \
2942 \
2943 product_pd(intx, ThreadStackSize, \
2944 "Thread Stack Size (in Kbytes)") \
2945 \
2946 product_pd(intx, VMThreadStackSize, \
2947 "Non-Java Thread Stack Size (in Kbytes)") \
2948 \
2949 product_pd(intx, CompilerThreadStackSize, \
2950 "Compiler Thread Stack Size (in Kbytes)") \
2951 \
2952 develop_pd(uintx, JVMInvokeMethodSlack, \
2953 "Stack space (bytes) required for JVM_InvokeMethod to complete") \
2954 \
2955 product(uintx, ThreadSafetyMargin, 50*M, \
2956 "Thread safety margin is used on fixed-stack LinuxThreads (on " \
2957 "Linux/x86 only) to prevent heap-stack collision. Set to 0 to " \
2958 "disable this feature") \
2959 \
2960 /* code cache parameters */ \
2961 develop(uintx, CodeCacheSegmentSize, 64, \
2962 "Code cache segment size (in bytes) - smallest unit of " \
2963 "allocation") \
2964 \
2965 develop_pd(intx, CodeEntryAlignment, \
2966 "Code entry alignment for generated code (in bytes)") \
2967 \
2968 product_pd(uintx, InitialCodeCacheSize, \
2969 "Initial code cache size (in bytes)") \
2970 \
2971 product_pd(uintx, ReservedCodeCacheSize, \
2972 "Reserved code cache size (in bytes) - maximum code cache size") \
2973 \
2974 product(uintx, CodeCacheMinimumFreeSpace, 500*K, \
2975 "When less than X space left, we stop compiling.") \
2976 \
2977 product_pd(uintx, CodeCacheExpansionSize, \
2978 "Code cache expansion size (in bytes)") \
2979 \
2980 develop_pd(uintx, CodeCacheMinBlockLength, \
2981 "Minimum number of segments in a code cache block.") \
2982 \
2983 notproduct(bool, ExitOnFullCodeCache, false, \
2984 "Exit the VM if we fill the code cache.") \
2985 \
2986 /* interpreter debugging */ \
2987 develop(intx, BinarySwitchThreshold, 5, \
2988 "Minimal number of lookupswitch entries for rewriting to binary " \
2989 "switch") \
2990 \
2991 develop(intx, StopInterpreterAt, 0, \
2992 "Stops interpreter execution at specified bytecode number") \
2993 \
2994 develop(intx, TraceBytecodesAt, 0, \
2995 "Traces bytecodes starting with specified bytecode number") \
2996 \
2997 /* compiler interface */ \
2998 develop(intx, CIStart, 0, \
2999 "the id of the first compilation to permit") \
3000 \
3001 develop(intx, CIStop, -1, \
3002 "the id of the last compilation to permit") \
3003 \
3004 develop(intx, CIStartOSR, 0, \
3005 "the id of the first osr compilation to permit " \
3006 "(CICountOSR must be on)") \
3007 \
3008 develop(intx, CIStopOSR, -1, \
3009 "the id of the last osr compilation to permit " \
3010 "(CICountOSR must be on)") \
3011 \
3012 develop(intx, CIBreakAtOSR, -1, \
3013 "id of osr compilation to break at") \
3014 \
3015 develop(intx, CIBreakAt, -1, \
3016 "id of compilation to break at") \
3017 \
3018 product(ccstrlist, CompileOnly, "", \
3019 "List of methods (pkg/class.name) to restrict compilation to") \
3020 \
3021 product(ccstr, CompileCommandFile, NULL, \
3022 "Read compiler commands from this file [.hotspot_compiler]") \
3023 \
3024 product(ccstrlist, CompileCommand, "", \
3025 "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \
3026 \
3027 product(bool, CICompilerCountPerCPU, false, \
3028 "1 compiler thread for log(N CPUs)") \
3029 \
3030 develop(intx, CIFireOOMAt, -1, \
3031 "Fire OutOfMemoryErrors throughout CI for testing the compiler " \
3032 "(non-negative value throws OOM after this many CI accesses " \
3033 "in each compile)") \
3034 \
3035 develop(intx, CIFireOOMAtDelay, -1, \
3036 "Wait for this many CI accesses to occur in all compiles before " \
3037 "beginning to throw OutOfMemoryErrors in each compile") \
3038 \
3039 notproduct(bool, CIObjectFactoryVerify, false, \
3040 "enable potentially expensive verification in ciObjectFactory") \
3041 \
3042 /* Priorities */ \
3043 product_pd(bool, UseThreadPriorities, "Use native thread priorities") \
3044 \
3045 product(intx, ThreadPriorityPolicy, 0, \
3046 "0 : Normal. "\
3047 " VM chooses priorities that are appropriate for normal "\
3048 " applications. On Solaris NORM_PRIORITY and above are mapped "\
3049 " to normal native priority. Java priorities below NORM_PRIORITY"\
3050 " map to lower native priority values. On Windows applications"\
3051 " are allowed to use higher native priorities. However, with "\
3052 " ThreadPriorityPolicy=0, VM will not use the highest possible"\
3053 " native priority, THREAD_PRIORITY_TIME_CRITICAL, as it may "\
3054 " interfere with system threads. On Linux thread priorities "\
3055 " are ignored because the OS does not support static priority "\
3056 " in SCHED_OTHER scheduling class which is the only choice for"\
3057 " non-root, non-realtime applications. "\
3058 "1 : Aggressive. "\
3059 " Java thread priorities map over to the entire range of "\
3060 " native thread priorities. Higher Java thread priorities map "\
3061 " to higher native thread priorities. This policy should be "\
3062 " used with care, as sometimes it can cause performance "\
3063 " degradation in the application and/or the entire system. On "\
3064 " Linux this policy requires root privilege.") \
3065 \
3066 product(bool, ThreadPriorityVerbose, false, \
3067 "print priority changes") \
3068 \
3069 product(intx, DefaultThreadPriority, -1, \
3070 "what native priority threads run at if not specified elsewhere (-1 means no change)") \
3071 \
3072 product(intx, CompilerThreadPriority, -1, \
3073 "what priority should compiler threads run at (-1 means no change)") \
3074 \
3075 product(intx, VMThreadPriority, -1, \
3076 "what priority should VM threads run at (-1 means no change)") \
3077 \
3078 product(bool, CompilerThreadHintNoPreempt, true, \
3079 "(Solaris only) Give compiler threads an extra quanta") \
3080 \
3081 product(bool, VMThreadHintNoPreempt, false, \
3082 "(Solaris only) Give VM thread an extra quanta") \
3083 \
3084 product(intx, JavaPriority1_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3085 product(intx, JavaPriority2_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3086 product(intx, JavaPriority3_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3087 product(intx, JavaPriority4_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3088 product(intx, JavaPriority5_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3089 product(intx, JavaPriority6_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3090 product(intx, JavaPriority7_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3091 product(intx, JavaPriority8_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3092 product(intx, JavaPriority9_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3093 product(intx, JavaPriority10_To_OSPriority,-1, "Map Java priorities to OS priorities") \
3094 \
3095 /* compiler debugging */ \
3096 notproduct(intx, CompileTheWorldStartAt, 1, \
3097 "First class to consider when using +CompileTheWorld") \
3098 \
3099 notproduct(intx, CompileTheWorldStopAt, max_jint, \
3100 "Last class to consider when using +CompileTheWorld") \
3101 \
3102 develop(intx, NewCodeParameter, 0, \
3103 "Testing Only: Create a dedicated integer parameter before " \
3104 "putback") \
3105 \
3106 /* new oopmap storage allocation */ \
3107 develop(intx, MinOopMapAllocation, 8, \
3108 "Minimum number of OopMap entries in an OopMapSet") \
3109 \
3110 /* Background Compilation */ \
3111 develop(intx, LongCompileThreshold, 50, \
3112 "Used with +TraceLongCompiles") \
3113 \
3114 product(intx, StarvationMonitorInterval, 200, \
3115 "Pause between each check in ms") \
3116 \
3117 /* recompilation */ \
3118 product_pd(intx, CompileThreshold, \
3119 "number of interpreted method invocations before (re-)compiling") \
3120 \
3121 product_pd(intx, BackEdgeThreshold, \
3122 "Interpreter Back edge threshold at which an OSR compilation is invoked")\
3123 \
3124 product(intx, Tier1BytecodeLimit, 10, \
3125 "Must have at least this many bytecodes before tier1" \
3126 "invocation counters are used") \
3127 \
3128 product_pd(intx, Tier2CompileThreshold, \
3129 "threshold at which a tier 2 compilation is invoked") \
3130 \
3131 product_pd(intx, Tier2BackEdgeThreshold, \
3132 "Back edge threshold at which a tier 2 compilation is invoked") \
3133 \
3134 product_pd(intx, Tier3CompileThreshold, \
3135 "threshold at which a tier 3 compilation is invoked") \
3136 \
3137 product_pd(intx, Tier3BackEdgeThreshold, \
3138 "Back edge threshold at which a tier 3 compilation is invoked") \
3139 \
3140 product_pd(intx, Tier4CompileThreshold, \
3141 "threshold at which a tier 4 compilation is invoked") \
3142 \
3143 product_pd(intx, Tier4BackEdgeThreshold, \
3144 "Back edge threshold at which a tier 4 compilation is invoked") \
3145 \
3146 product_pd(bool, TieredCompilation, \
3147 "Enable two-tier compilation") \
3148 \
3149 product(bool, StressTieredRuntime, false, \
3150 "Alternate client and server compiler on compile requests") \
3151 \
3152 product_pd(intx, OnStackReplacePercentage, \
3153 "NON_TIERED number of method invocations/branches (expressed as %"\
3154 "of CompileThreshold) before (re-)compiling OSR code") \
3155 \
3156 product(intx, InterpreterProfilePercentage, 33, \
3157 "NON_TIERED number of method invocations/branches (expressed as %"\
3158 "of CompileThreshold) before profiling in the interpreter") \
3159 \
3160 develop(intx, MaxRecompilationSearchLength, 10, \
3161 "max. # frames to inspect searching for recompilee") \
3162 \
3163 develop(intx, MaxInterpretedSearchLength, 3, \
3164 "max. # interp. frames to skip when searching for recompilee") \
3165 \
3166 develop(intx, DesiredMethodLimit, 8000, \
3167 "desired max. method size (in bytecodes) after inlining") \
3168 \
3169 develop(intx, HugeMethodLimit, 8000, \
3170 "don't compile methods larger than this if " \
3171 "+DontCompileHugeMethods") \
3172 \
3173 /* New JDK 1.4 reflection implementation */ \
3174 \
3175 develop(bool, UseNewReflection, true, \
3176 "Temporary flag for transition to reflection based on dynamic " \
3177 "bytecode generation in 1.4; can no longer be turned off in 1.4 " \
3178 "JDK, and is unneeded in 1.3 JDK, but marks most places VM " \
3179 "changes were needed") \
3180 \
3181 develop(bool, VerifyReflectionBytecodes, false, \
3182 "Force verification of 1.4 reflection bytecodes. Does not work " \
3183 "in situations like that described in 4486457 or for " \
3184 "constructors generated for serialization, so can not be enabled "\
3185 "in product.") \
3186 \
3187 product(bool, ReflectionWrapResolutionErrors, true, \
3188 "Temporary flag for transition to AbstractMethodError wrapped " \
3189 "in InvocationTargetException. See 6531596") \
3190 \
3191 \
3192 develop(intx, FastSuperclassLimit, 8, \
3193 "Depth of hardwired instanceof accelerator array") \
3194 \
3195 /* Properties for Java libraries */ \
3196 \
3197 product(intx, MaxDirectMemorySize, -1, \
3198 "Maximum total size of NIO direct-buffer allocations") \
3199 \
3200 /* temporary developer defined flags */ \
3201 \
3202 diagnostic(bool, UseNewCode, false, \
3203 "Testing Only: Use the new version while testing") \
3204 \
3205 diagnostic(bool, UseNewCode2, false, \
3206 "Testing Only: Use the new version while testing") \
3207 \
3208 diagnostic(bool, UseNewCode3, false, \
3209 "Testing Only: Use the new version while testing") \
3210 \
3211 /* flags for performance data collection */ \
3212 \
3213 product(bool, UsePerfData, true, \
3214 "Flag to disable jvmstat instrumentation for performance testing" \
3215 "and problem isolation purposes.") \
3216 \
3217 product(bool, PerfDataSaveToFile, false, \
3218 "Save PerfData memory to hsperfdata_<pid> file on exit") \
3219 \
3220 product(ccstr, PerfDataSaveFile, NULL, \
3221 "Save PerfData memory to the specified absolute pathname," \
3222 "%p in the file name if present will be replaced by pid") \
3223 \
3224 product(intx, PerfDataSamplingInterval, 50 /*ms*/, \
3225 "Data sampling interval in milliseconds") \
3226 \
3227 develop(bool, PerfTraceDataCreation, false, \
3228 "Trace creation of Performance Data Entries") \
3229 \
3230 develop(bool, PerfTraceMemOps, false, \
3231 "Trace PerfMemory create/attach/detach calls") \
3232 \
3233 product(bool, PerfDisableSharedMem, false, \
3234 "Store performance data in standard memory") \
3235 \
3236 product(intx, PerfDataMemorySize, 32*K, \
3237 "Size of performance data memory region. Will be rounded " \
3238 "up to a multiple of the native os page size.") \
3239 \
3240 product(intx, PerfMaxStringConstLength, 1024, \
3241 "Maximum PerfStringConstant string length before truncation") \
3242 \
3243 product(bool, PerfAllowAtExitRegistration, false, \
3244 "Allow registration of atexit() methods") \
3245 \
3246 product(bool, PerfBypassFileSystemCheck, false, \
3247 "Bypass Win32 file system criteria checks (Windows Only)") \
3248 \
3249 product(intx, UnguardOnExecutionViolation, 0, \
3250 "Unguard page and retry on no-execute fault (Win32 only)" \
3251 "0=off, 1=conservative, 2=aggressive") \
3252 \
3253 /* Serviceability Support */ \
3254 \
3255 product(bool, ManagementServer, false, \
3256 "Create JMX Management Server") \
3257 \
3258 product(bool, DisableAttachMechanism, false, \
3259 "Disable mechanism that allows tools to attach to this VM") \
3260 \
3261 product(bool, StartAttachListener, false, \
3262 "Always start Attach Listener at VM startup") \
3263 \
3264 manageable(bool, PrintConcurrentLocks, false, \
3265 "Print java.util.concurrent locks in thread dump") \
3266 \
3267 /* Shared spaces */ \
3268 \
3269 product(bool, UseSharedSpaces, true, \
3270 "Use shared spaces in the permanent generation") \
3271 \
3272 product(bool, RequireSharedSpaces, false, \
3273 "Require shared spaces in the permanent generation") \
3274 \
3275 product(bool, ForceSharedSpaces, false, \
3276 "Require shared spaces in the permanent generation") \
3277 \
3278 product(bool, DumpSharedSpaces, false, \
3279 "Special mode: JVM reads a class list, loads classes, builds " \
3280 "shared spaces, and dumps the shared spaces to a file to be " \
3281 "used in future JVM runs.") \
3282 \
3283 product(bool, PrintSharedSpaces, false, \
3284 "Print usage of shared spaces") \
3285 \
3286 product(uintx, SharedDummyBlockSize, 512*M, \
3287 "Size of dummy block used to shift heap addresses (in bytes)") \
3288 \
3289 product(uintx, SharedReadWriteSize, 12*M, \
3290 "Size of read-write space in permanent generation (in bytes)") \
3291 \
3292 product(uintx, SharedReadOnlySize, 10*M, \
3293 "Size of read-only space in permanent generation (in bytes)") \
3294 \
3295 product(uintx, SharedMiscDataSize, 4*M, \
3296 "Size of the shared data area adjacent to the heap (in bytes)") \
3297 \
3298 product(uintx, SharedMiscCodeSize, 4*M, \
3299 "Size of the shared code area adjacent to the heap (in bytes)") \
3300 \
3301 diagnostic(bool, SharedOptimizeColdStart, true, \
3302 "At dump time, order shared objects to achieve better " \
3303 "cold startup time.") \
3304 \
3305 develop(intx, SharedOptimizeColdStartPolicy, 2, \
3306 "Reordering policy for SharedOptimizeColdStart " \
3307 "0=favor classload-time locality, 1=balanced, " \
3308 "2=favor runtime locality") \
3309 \
3310 diagnostic(bool, SharedSkipVerify, false, \
3311 "Skip assert() and verify() which page-in unwanted shared " \
3312 "objects. ") \
3313 \
3314 product(bool, AnonymousClasses, false, \
3315 "support sun.misc.Unsafe.defineAnonymousClass") \
3316 \
3317 experimental(bool, EnableMethodHandles, false, \
3318 "support method handles (true by default under JSR 292)") \
3319 \
3320 diagnostic(intx, MethodHandlePushLimit, 3, \
3321 "number of additional stack slots a method handle may push") \
3322 \
3323 develop(bool, TraceMethodHandles, false, \
3324 "trace internal method handle operations") \
3325 \
3326 diagnostic(bool, VerifyMethodHandles, trueInDebug, \
3327 "perform extra checks when constructing method handles") \
3328 \
3329 diagnostic(bool, OptimizeMethodHandles, true, \
3330 "when constructing method handles, try to improve them") \
3331 \
3332 experimental(bool, EnableInvokeDynamic, false, \
3333 "recognize the invokedynamic instruction") \
3334 \
3335 develop(bool, TraceInvokeDynamic, false, \
3336 "trace internal invoke dynamic operations") \
3337 \
3338 product(bool, TaggedStackInterpreter, false, \
3339 "Insert tags in interpreter execution stack for oopmap generaion")\
3340 \
3341 diagnostic(bool, PauseAtStartup, false, \
3342 "Causes the VM to pause at startup time and wait for the pause " \
3343 "file to be removed (default: ./vm.paused.<pid>)") \
3344 \
3345 diagnostic(ccstr, PauseAtStartupFile, NULL, \
3346 "The file to create and for whose removal to await when pausing " \
3347 "at startup. (default: ./vm.paused.<pid>)") \
3348 \
3349 product(bool, ExtendedDTraceProbes, false, \
3350 "Enable performance-impacting dtrace probes") \
3351 \
3352 product(bool, DTraceMethodProbes, false, \
3353 "Enable dtrace probes for method-entry and method-exit") \
3354 \
3355 product(bool, DTraceAllocProbes, false, \
3356 "Enable dtrace probes for object allocation") \
3357 \
3358 product(bool, DTraceMonitorProbes, false, \
3359 "Enable dtrace probes for monitor events") \
3360 \
3361 product(bool, RelaxAccessControlCheck, false, \
3362 "Relax the access control checks in the verifier") \
3363 \
3364 diagnostic(bool, PrintDTraceDOF, false, \
3365 "Print the DTrace DOF passed to the system for JSDT probes") \
3366 \
3367 product(bool, UseVMInterruptibleIO, false, \
3368 "(Unstable, Solaris-specific) Thread interrupt before or with " \
3369 "EINTR for I/O operations results in OS_INTRPT. The default value"\
3370 " of this flag is true for JDK 6 and earliers")
3371
3372
3373 /*
3374 * Macros for factoring of globals
3375 */
3376
3377 // Interface macros
3378 #define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name;
3379 #define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name;
3380 #define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name;
3381 #define DECLARE_EXPERIMENTAL_FLAG(type, name, value, doc) extern "C" type name;
3382 #define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name;
3383 #define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name;
3384 #ifdef PRODUCT
3385 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) const type name = value;
3386 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) const type name = pd_##name;
3387 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc)
3388 #else
3389 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name;
3390 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name;
3391 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name;
3392 #endif
3393 // Special LP64 flags, product only needed for now.
3394 #ifdef _LP64
3395 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) extern "C" type name;
3396 #else
3397 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) const type name = value;
3398 #endif // _LP64
3399
3400 // Implementation macros
3401 #define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value;
3402 #define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name;
3403 #define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value;
3404 #define MATERIALIZE_EXPERIMENTAL_FLAG(type, name, value, doc) type name = value;
3405 #define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value;
3406 #define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value;
3407 #ifdef PRODUCT
3408 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) /* flag name is constant */
3409 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) /* flag name is constant */
3410 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc)
3411 #else
3412 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value;
3413 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name;
3414 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value;
3415 #endif
3416 #ifdef _LP64
3417 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) type name = value;
3418 #else
3419 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) /* flag is constant */
3420 #endif // _LP64
3421
3422 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)
3423
3424 RUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG)