Tue, 28 Jul 2009 13:50:07 -0600
Merge
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 */
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);
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);
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);
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, InlineSmallCode, 0);
51 define_pd_global(intx, NewSizeThreadIncrease, 4*K);
52 define_pd_global(intx, NewRatio, 4);
53 define_pd_global(intx, InlineClassNatives, true);
54 define_pd_global(intx, InlineUnsafeOps, true);
55 define_pd_global(intx, InitialCodeCacheSize, 160*K);
56 define_pd_global(intx, ReservedCodeCacheSize, 32*M);
57 define_pd_global(intx, CodeCacheExpansionSize, 32*K);
58 define_pd_global(intx, CodeCacheMinBlockLength, 1);
59 define_pd_global(uintx,PermSize, ScaleForWordSize(4*M));
60 define_pd_global(uintx,MaxPermSize, ScaleForWordSize(64*M));
61 define_pd_global(bool, NeverActAsServerClassMachine, true);
62 define_pd_global(uintx, DefaultMaxRAM, 1*G);
63 #define CI_COMPILER_COUNT 0
64 #else
66 #ifdef COMPILER2
67 #define CI_COMPILER_COUNT 2
68 #else
69 #define CI_COMPILER_COUNT 1
70 #endif // COMPILER2
72 #endif // no compilers
75 // string type aliases used only in this file
76 typedef const char* ccstr;
77 typedef const char* ccstrlist; // represents string arguments which accumulate
79 enum FlagValueOrigin {
80 DEFAULT = 0,
81 COMMAND_LINE = 1,
82 ENVIRON_VAR = 2,
83 CONFIG_FILE = 3,
84 MANAGEMENT = 4,
85 ERGONOMIC = 5,
86 ATTACH_ON_DEMAND = 6,
87 INTERNAL = 99
88 };
90 struct Flag {
91 const char *type;
92 const char *name;
93 void* addr;
94 const char *kind;
95 FlagValueOrigin origin;
97 // points to all Flags static array
98 static Flag *flags;
100 // number of flags
101 static size_t numFlags;
103 static Flag* find_flag(char* name, size_t length);
105 bool is_bool() const { return strcmp(type, "bool") == 0; }
106 bool get_bool() const { return *((bool*) addr); }
107 void set_bool(bool value) { *((bool*) addr) = value; }
109 bool is_intx() const { return strcmp(type, "intx") == 0; }
110 intx get_intx() const { return *((intx*) addr); }
111 void set_intx(intx value) { *((intx*) addr) = value; }
113 bool is_uintx() const { return strcmp(type, "uintx") == 0; }
114 uintx get_uintx() const { return *((uintx*) addr); }
115 void set_uintx(uintx value) { *((uintx*) addr) = value; }
117 bool is_double() const { return strcmp(type, "double") == 0; }
118 double get_double() const { return *((double*) addr); }
119 void set_double(double value) { *((double*) addr) = value; }
121 bool is_ccstr() const { return strcmp(type, "ccstr") == 0 || strcmp(type, "ccstrlist") == 0; }
122 bool ccstr_accumulates() const { return strcmp(type, "ccstrlist") == 0; }
123 ccstr get_ccstr() const { return *((ccstr*) addr); }
124 void set_ccstr(ccstr value) { *((ccstr*) addr) = value; }
126 bool is_unlocker() const;
127 bool is_unlocked() const;
128 bool is_writeable() const;
129 bool is_external() const;
131 void print_on(outputStream* st);
132 void print_as_flag(outputStream* st);
133 };
135 // debug flags control various aspects of the VM and are global accessible
137 // use FlagSetting to temporarily change some debug flag
138 // e.g. FlagSetting fs(DebugThisAndThat, true);
139 // restored to previous value upon leaving scope
140 class FlagSetting {
141 bool val;
142 bool* flag;
143 public:
144 FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; }
145 ~FlagSetting() { *flag = val; }
146 };
149 class CounterSetting {
150 intx* counter;
151 public:
152 CounterSetting(intx* cnt) { counter = cnt; (*counter)++; }
153 ~CounterSetting() { (*counter)--; }
154 };
157 class IntFlagSetting {
158 intx val;
159 intx* flag;
160 public:
161 IntFlagSetting(intx& fl, intx newValue) { flag = &fl; val = fl; fl = newValue; }
162 ~IntFlagSetting() { *flag = val; }
163 };
166 class DoubleFlagSetting {
167 double val;
168 double* flag;
169 public:
170 DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; }
171 ~DoubleFlagSetting() { *flag = val; }
172 };
175 class CommandLineFlags {
176 public:
177 static bool boolAt(char* name, size_t len, bool* value);
178 static bool boolAt(char* name, bool* value) { return boolAt(name, strlen(name), value); }
179 static bool boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin);
180 static bool boolAtPut(char* name, bool* value, FlagValueOrigin origin) { return boolAtPut(name, strlen(name), value, origin); }
182 static bool intxAt(char* name, size_t len, intx* value);
183 static bool intxAt(char* name, intx* value) { return intxAt(name, strlen(name), value); }
184 static bool intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin);
185 static bool intxAtPut(char* name, intx* value, FlagValueOrigin origin) { return intxAtPut(name, strlen(name), value, origin); }
187 static bool uintxAt(char* name, size_t len, uintx* value);
188 static bool uintxAt(char* name, uintx* value) { return uintxAt(name, strlen(name), value); }
189 static bool uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin);
190 static bool uintxAtPut(char* name, uintx* value, FlagValueOrigin origin) { return uintxAtPut(name, strlen(name), value, origin); }
192 static bool doubleAt(char* name, size_t len, double* value);
193 static bool doubleAt(char* name, double* value) { return doubleAt(name, strlen(name), value); }
194 static bool doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin);
195 static bool doubleAtPut(char* name, double* value, FlagValueOrigin origin) { return doubleAtPut(name, strlen(name), value, origin); }
197 static bool ccstrAt(char* name, size_t len, ccstr* value);
198 static bool ccstrAt(char* name, ccstr* value) { return ccstrAt(name, strlen(name), value); }
199 static bool ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin);
200 static bool ccstrAtPut(char* name, ccstr* value, FlagValueOrigin origin) { return ccstrAtPut(name, strlen(name), value, origin); }
202 // Returns false if name is not a command line flag.
203 static bool wasSetOnCmdline(const char* name, bool* value);
204 static void printSetFlags();
206 static void printFlags() PRODUCT_RETURN;
208 static void verify() PRODUCT_RETURN;
209 };
211 // use this for flags that are true by default in the debug version but
212 // false in the optimized version, and vice versa
213 #ifdef ASSERT
214 #define trueInDebug true
215 #define falseInDebug false
216 #else
217 #define trueInDebug false
218 #define falseInDebug true
219 #endif
221 // use this for flags that are true per default in the product build
222 // but false in development builds, and vice versa
223 #ifdef PRODUCT
224 #define trueInProduct true
225 #define falseInProduct false
226 #else
227 #define trueInProduct false
228 #define falseInProduct true
229 #endif
231 // use this for flags that are true per default in the tiered build
232 // but false in non-tiered builds, and vice versa
233 #ifdef TIERED
234 #define trueInTiered true
235 #define falseInTiered false
236 #else
237 #define trueInTiered false
238 #define falseInTiered true
239 #endif
241 // develop flags are settable / visible only during development and are constant in the PRODUCT version
242 // product flags are always settable / visible
243 // notproduct flags are settable / visible only during development and are not declared in the PRODUCT version
245 // A flag must be declared with one of the following types:
246 // bool, intx, uintx, ccstr.
247 // The type "ccstr" is an alias for "const char*" and is used
248 // only in this file, because the macrology requires single-token type names.
250 // Note: Diagnostic options not meant for VM tuning or for product modes.
251 // They are to be used for VM quality assurance or field diagnosis
252 // of VM bugs. They are hidden so that users will not be encouraged to
253 // try them as if they were VM ordinary execution options. However, they
254 // are available in the product version of the VM. Under instruction
255 // from support engineers, VM customers can turn them on to collect
256 // diagnostic information about VM problems. To use a VM diagnostic
257 // option, you must first specify +UnlockDiagnosticVMOptions.
258 // (This master switch also affects the behavior of -Xprintflags.)
259 //
260 // experimental flags are in support of features that are not
261 // part of the officially supported product, but are available
262 // for experimenting with. They could, for example, be performance
263 // features that may not have undergone full or rigorous QA, but which may
264 // help performance in some cases and released for experimentation
265 // by the community of users and developers. This flag also allows one to
266 // be able to build a fully supported product that nonetheless also
267 // ships with some unsupported, lightly tested, experimental features.
268 // Like the UnlockDiagnosticVMOptions flag above, there is a corresponding
269 // UnlockExperimentalVMOptions flag, which allows the control and
270 // modification of the experimental flags.
271 //
272 // manageable flags are writeable external product flags.
273 // They are dynamically writeable through the JDK management interface
274 // (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole.
275 // These flags are external exported interface (see CCC). The list of
276 // manageable flags can be queried programmatically through the management
277 // interface.
278 //
279 // A flag can be made as "manageable" only if
280 // - the flag is defined in a CCC as an external exported interface.
281 // - the VM implementation supports dynamic setting of the flag.
282 // This implies that the VM must *always* query the flag variable
283 // and not reuse state related to the flag state at any given time.
284 // - you want the flag to be queried programmatically by the customers.
285 //
286 // product_rw flags are writeable internal product flags.
287 // They are like "manageable" flags but for internal/private use.
288 // The list of product_rw flags are internal/private flags which
289 // may be changed/removed in a future release. It can be set
290 // through the management interface to get/set value
291 // when the name of flag is supplied.
292 //
293 // A flag can be made as "product_rw" only if
294 // - the VM implementation supports dynamic setting of the flag.
295 // This implies that the VM must *always* query the flag variable
296 // and not reuse state related to the flag state at any given time.
297 //
298 // Note that when there is a need to support develop flags to be writeable,
299 // it can be done in the same way as product_rw.
301 #define RUNTIME_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw, lp64_product) \
302 \
303 lp64_product(bool, UseCompressedOops, false, \
304 "Use 32-bit object references in 64-bit VM. " \
305 "lp64_product means flag is always constant in 32 bit VM") \
306 \
307 notproduct(bool, CheckCompressedOops, true, \
308 "generate checks in encoding/decoding code in debug VM") \
309 \
310 product_pd(uintx, HeapBaseMinAddress, \
311 "OS specific low limit for heap base address") \
312 \
313 diagnostic(bool, PrintCompressedOopsMode, false, \
314 "Print compressed oops base address and encoding mode") \
315 \
316 /* UseMembar is theoretically a temp flag used for memory barrier \
317 * removal testing. It was supposed to be removed before FCS but has \
318 * been re-added (see 6401008) */ \
319 product(bool, UseMembar, false, \
320 "(Unstable) Issues membars on thread state transitions") \
321 \
322 product(bool, PrintCommandLineFlags, false, \
323 "Prints flags that appeared on the command line") \
324 \
325 diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \
326 "Enable normal processing of flags relating to field diagnostics")\
327 \
328 experimental(bool, UnlockExperimentalVMOptions, false, \
329 "Enable normal processing of flags relating to experimental features")\
330 \
331 product(bool, JavaMonitorsInStackTrace, true, \
332 "Print info. about Java monitor locks when the stacks are dumped")\
333 \
334 product_pd(bool, UseLargePages, \
335 "Use large page memory") \
336 \
337 product_pd(bool, UseLargePagesIndividualAllocation, \
338 "Allocate large pages individually for better affinity") \
339 \
340 develop(bool, LargePagesIndividualAllocationInjectError, false, \
341 "Fail large pages individual allocation") \
342 \
343 develop(bool, TracePageSizes, false, \
344 "Trace page size selection and usage.") \
345 \
346 product(bool, UseNUMA, false, \
347 "Use NUMA if available") \
348 \
349 product(bool, ForceNUMA, false, \
350 "Force NUMA optimizations on single-node/UMA systems") \
351 \
352 product(intx, NUMAChunkResizeWeight, 20, \
353 "Percentage (0-100) used to weight the current sample when " \
354 "computing exponentially decaying average for " \
355 "AdaptiveNUMAChunkSizing") \
356 \
357 product(intx, NUMASpaceResizeRate, 1*G, \
358 "Do not reallocate more that this amount per collection") \
359 \
360 product(bool, UseAdaptiveNUMAChunkSizing, true, \
361 "Enable adaptive chunk sizing for NUMA") \
362 \
363 product(bool, NUMAStats, false, \
364 "Print NUMA stats in detailed heap information") \
365 \
366 product(intx, NUMAPageScanRate, 256, \
367 "Maximum number of pages to include in the page scan procedure") \
368 \
369 product_pd(bool, NeedsDeoptSuspend, \
370 "True for register window machines (sparc/ia64)") \
371 \
372 product(intx, UseSSE, 99, \
373 "Highest supported SSE instructions set on x86/x64") \
374 \
375 product(uintx, LargePageSizeInBytes, 0, \
376 "Large page size (0 to let VM choose the page size") \
377 \
378 product(uintx, LargePageHeapSizeThreshold, 128*M, \
379 "Use large pages if max heap is at least this big") \
380 \
381 product(bool, ForceTimeHighResolution, false, \
382 "Using high time resolution(For Win32 only)") \
383 \
384 develop(bool, TraceItables, false, \
385 "Trace initialization and use of itables") \
386 \
387 develop(bool, TracePcPatching, false, \
388 "Trace usage of frame::patch_pc") \
389 \
390 develop(bool, TraceJumps, false, \
391 "Trace assembly jumps in thread ring buffer") \
392 \
393 develop(bool, TraceRelocator, false, \
394 "Trace the bytecode relocator") \
395 \
396 develop(bool, TraceLongCompiles, false, \
397 "Print out every time compilation is longer than " \
398 "a given threashold") \
399 \
400 develop(bool, SafepointALot, false, \
401 "Generates a lot of safepoints. Works with " \
402 "GuaranteedSafepointInterval") \
403 \
404 product_pd(bool, BackgroundCompilation, \
405 "A thread requesting compilation is not blocked during " \
406 "compilation") \
407 \
408 product(bool, PrintVMQWaitTime, false, \
409 "Prints out the waiting time in VM operation queue") \
410 \
411 develop(bool, BailoutToInterpreterForThrows, false, \
412 "Compiled methods which throws/catches exceptions will be " \
413 "deopt and intp.") \
414 \
415 develop(bool, NoYieldsInMicrolock, false, \
416 "Disable yields in microlock") \
417 \
418 develop(bool, TraceOopMapGeneration, false, \
419 "Shows oopmap generation") \
420 \
421 product(bool, MethodFlushing, true, \
422 "Reclamation of zombie and not-entrant methods") \
423 \
424 develop(bool, VerifyStack, false, \
425 "Verify stack of each thread when it is entering a runtime call") \
426 \
427 develop(bool, ForceUnreachable, false, \
428 "(amd64) Make all non code cache addresses to be unreachable with rip-rel forcing use of 64bit literal fixups") \
429 \
430 notproduct(bool, StressDerivedPointers, false, \
431 "Force scavenge when a derived pointers is detected on stack " \
432 "after rtm call") \
433 \
434 develop(bool, TraceDerivedPointers, false, \
435 "Trace traversal of derived pointers on stack") \
436 \
437 notproduct(bool, TraceCodeBlobStacks, false, \
438 "Trace stack-walk of codeblobs") \
439 \
440 product(bool, PrintJNIResolving, false, \
441 "Used to implement -v:jni") \
442 \
443 notproduct(bool, PrintRewrites, false, \
444 "Print methods that are being rewritten") \
445 \
446 product(bool, UseInlineCaches, true, \
447 "Use Inline Caches for virtual calls ") \
448 \
449 develop(bool, InlineArrayCopy, true, \
450 "inline arraycopy native that is known to be part of " \
451 "base library DLL") \
452 \
453 develop(bool, InlineObjectHash, true, \
454 "inline Object::hashCode() native that is known to be part " \
455 "of base library DLL") \
456 \
457 develop(bool, InlineObjectCopy, true, \
458 "inline Object.clone and Arrays.copyOf[Range] intrinsics") \
459 \
460 develop(bool, InlineNatives, true, \
461 "inline natives that are known to be part of base library DLL") \
462 \
463 develop(bool, InlineMathNatives, true, \
464 "inline SinD, CosD, etc.") \
465 \
466 develop(bool, InlineClassNatives, true, \
467 "inline Class.isInstance, etc") \
468 \
469 develop(bool, InlineAtomicLong, true, \
470 "inline sun.misc.AtomicLong") \
471 \
472 develop(bool, InlineThreadNatives, true, \
473 "inline Thread.currentThread, etc") \
474 \
475 develop(bool, InlineReflectionGetCallerClass, true, \
476 "inline sun.reflect.Reflection.getCallerClass(), known to be part "\
477 "of base library DLL") \
478 \
479 develop(bool, InlineUnsafeOps, true, \
480 "inline memory ops (native methods) from sun.misc.Unsafe") \
481 \
482 develop(bool, ConvertCmpD2CmpF, true, \
483 "Convert cmpD to cmpF when one input is constant in float range") \
484 \
485 develop(bool, ConvertFloat2IntClipping, true, \
486 "Convert float2int clipping idiom to integer clipping") \
487 \
488 develop(bool, SpecialStringCompareTo, true, \
489 "special version of string compareTo") \
490 \
491 develop(bool, SpecialStringIndexOf, true, \
492 "special version of string indexOf") \
493 \
494 develop(bool, SpecialStringEquals, true, \
495 "special version of string equals") \
496 \
497 develop(bool, SpecialArraysEquals, true, \
498 "special version of Arrays.equals(char[],char[])") \
499 \
500 product(bool, UseSSE42Intrinsics, false, \
501 "SSE4.2 versions of intrinsics") \
502 \
503 develop(bool, TraceCallFixup, false, \
504 "traces all call fixups") \
505 \
506 develop(bool, DeoptimizeALot, false, \
507 "deoptimize at every exit from the runtime system") \
508 \
509 notproduct(ccstrlist, DeoptimizeOnlyAt, "", \
510 "a comma separated list of bcis to deoptimize at") \
511 \
512 product(bool, DeoptimizeRandom, false, \
513 "deoptimize random frames on random exit from the runtime system")\
514 \
515 notproduct(bool, ZombieALot, false, \
516 "creates zombies (non-entrant) at exit from the runt. system") \
517 \
518 notproduct(bool, WalkStackALot, false, \
519 "trace stack (no print) at every exit from the runtime system") \
520 \
521 develop(bool, Debugging, false, \
522 "set when executing debug methods in debug.ccp " \
523 "(to prevent triggering assertions)") \
524 \
525 notproduct(bool, StrictSafepointChecks, trueInDebug, \
526 "Enable strict checks that safepoints cannot happen for threads " \
527 "that used No_Safepoint_Verifier") \
528 \
529 notproduct(bool, VerifyLastFrame, false, \
530 "Verify oops on last frame on entry to VM") \
531 \
532 develop(bool, TraceHandleAllocation, false, \
533 "Prints out warnings when suspicious many handles are allocated") \
534 \
535 product(bool, UseCompilerSafepoints, true, \
536 "Stop at safepoints in compiled code") \
537 \
538 product(bool, UseSplitVerifier, true, \
539 "use split verifier with StackMapTable attributes") \
540 \
541 product(bool, FailOverToOldVerifier, true, \
542 "fail over to old verifier when split verifier fails") \
543 \
544 develop(bool, ShowSafepointMsgs, false, \
545 "Show msg. about safepoint synch.") \
546 \
547 product(bool, SafepointTimeout, false, \
548 "Time out and warn or fail after SafepointTimeoutDelay " \
549 "milliseconds if failed to reach safepoint") \
550 \
551 develop(bool, DieOnSafepointTimeout, false, \
552 "Die upon failure to reach safepoint (see SafepointTimeout)") \
553 \
554 /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \
555 /* typically, at most a few retries are needed */ \
556 product(intx, SuspendRetryCount, 50, \
557 "Maximum retry count for an external suspend request") \
558 \
559 product(intx, SuspendRetryDelay, 5, \
560 "Milliseconds to delay per retry (* current_retry_count)") \
561 \
562 product(bool, AssertOnSuspendWaitFailure, false, \
563 "Assert/Guarantee on external suspend wait failure") \
564 \
565 product(bool, TraceSuspendWaitFailures, false, \
566 "Trace external suspend wait failures") \
567 \
568 product(bool, MaxFDLimit, true, \
569 "Bump the number of file descriptors to max in solaris.") \
570 \
571 notproduct(bool, LogEvents, trueInDebug, \
572 "Enable Event log") \
573 \
574 product(bool, BytecodeVerificationRemote, true, \
575 "Enables the Java bytecode verifier for remote classes") \
576 \
577 product(bool, BytecodeVerificationLocal, false, \
578 "Enables the Java bytecode verifier for local classes") \
579 \
580 develop(bool, ForceFloatExceptions, trueInDebug, \
581 "Force exceptions on FP stack under/overflow") \
582 \
583 develop(bool, SoftMatchFailure, trueInProduct, \
584 "If the DFA fails to match a node, print a message and bail out") \
585 \
586 develop(bool, VerifyStackAtCalls, false, \
587 "Verify that the stack pointer is unchanged after calls") \
588 \
589 develop(bool, TraceJavaAssertions, false, \
590 "Trace java language assertions") \
591 \
592 notproduct(bool, CheckAssertionStatusDirectives, false, \
593 "temporary - see javaClasses.cpp") \
594 \
595 notproduct(bool, PrintMallocFree, false, \
596 "Trace calls to C heap malloc/free allocation") \
597 \
598 notproduct(bool, PrintOopAddress, false, \
599 "Always print the location of the oop") \
600 \
601 notproduct(bool, VerifyCodeCacheOften, false, \
602 "Verify compiled-code cache often") \
603 \
604 develop(bool, ZapDeadCompiledLocals, false, \
605 "Zap dead locals in compiler frames") \
606 \
607 notproduct(bool, ZapDeadLocalsOld, false, \
608 "Zap dead locals (old version, zaps all frames when " \
609 "entering the VM") \
610 \
611 notproduct(bool, CheckOopishValues, false, \
612 "Warn if value contains oop ( requires ZapDeadLocals)") \
613 \
614 develop(bool, UseMallocOnly, false, \
615 "use only malloc/free for allocation (no resource area/arena)") \
616 \
617 develop(bool, PrintMalloc, false, \
618 "print all malloc/free calls") \
619 \
620 develop(bool, ZapResourceArea, trueInDebug, \
621 "Zap freed resource/arena space with 0xABABABAB") \
622 \
623 notproduct(bool, ZapVMHandleArea, trueInDebug, \
624 "Zap freed VM handle space with 0xBCBCBCBC") \
625 \
626 develop(bool, ZapJNIHandleArea, trueInDebug, \
627 "Zap freed JNI handle space with 0xFEFEFEFE") \
628 \
629 develop(bool, ZapUnusedHeapArea, trueInDebug, \
630 "Zap unused heap space with 0xBAADBABE") \
631 \
632 develop(bool, TraceZapUnusedHeapArea, false, \
633 "Trace zapping of unused heap space") \
634 \
635 develop(bool, CheckZapUnusedHeapArea, false, \
636 "Check zapping of unused heap space") \
637 \
638 develop(bool, ZapFillerObjects, trueInDebug, \
639 "Zap filler objects with 0xDEAFBABE") \
640 \
641 develop(bool, PrintVMMessages, true, \
642 "Print vm messages on console") \
643 \
644 product(bool, PrintGCApplicationConcurrentTime, false, \
645 "Print the time the application has been running") \
646 \
647 product(bool, PrintGCApplicationStoppedTime, false, \
648 "Print the time the application has been stopped") \
649 \
650 develop(bool, Verbose, false, \
651 "Prints additional debugging information from other modes") \
652 \
653 develop(bool, PrintMiscellaneous, false, \
654 "Prints uncategorized debugging information (requires +Verbose)") \
655 \
656 develop(bool, WizardMode, false, \
657 "Prints much more debugging information") \
658 \
659 product(bool, ShowMessageBoxOnError, false, \
660 "Keep process alive on VM fatal error") \
661 \
662 product_pd(bool, UseOSErrorReporting, \
663 "Let VM fatal error propagate to the OS (ie. WER on Windows)") \
664 \
665 product(bool, SuppressFatalErrorMessage, false, \
666 "Do NO Fatal Error report [Avoid deadlock]") \
667 \
668 product(ccstrlist, OnError, "", \
669 "Run user-defined commands on fatal error; see VMError.cpp " \
670 "for examples") \
671 \
672 product(ccstrlist, OnOutOfMemoryError, "", \
673 "Run user-defined commands on first java.lang.OutOfMemoryError") \
674 \
675 manageable(bool, HeapDumpBeforeFullGC, false, \
676 "Dump heap to file before any major stop-world GC") \
677 \
678 manageable(bool, HeapDumpAfterFullGC, false, \
679 "Dump heap to file after any major stop-world GC") \
680 \
681 manageable(bool, HeapDumpOnOutOfMemoryError, false, \
682 "Dump heap to file when java.lang.OutOfMemoryError is thrown") \
683 \
684 manageable(ccstr, HeapDumpPath, NULL, \
685 "When HeapDumpOnOutOfMemoryError is on, the path (filename or" \
686 "directory) of the dump file (defaults to java_pid<pid>.hprof" \
687 "in the working directory)") \
688 \
689 develop(uintx, SegmentedHeapDumpThreshold, 2*G, \
690 "Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) " \
691 "when the heap usage is larger than this") \
692 \
693 develop(uintx, HeapDumpSegmentSize, 1*G, \
694 "Approximate segment size when generating a segmented heap dump") \
695 \
696 develop(bool, BreakAtWarning, false, \
697 "Execute breakpoint upon encountering VM warning") \
698 \
699 product_pd(bool, UseVectoredExceptions, \
700 "Temp Flag - Use Vectored Exceptions rather than SEH (Windows Only)") \
701 \
702 develop(bool, TraceVMOperation, false, \
703 "Trace vm operations") \
704 \
705 develop(bool, UseFakeTimers, false, \
706 "Tells whether the VM should use system time or a fake timer") \
707 \
708 diagnostic(bool, LogCompilation, false, \
709 "Log compilation activity in detail to hotspot.log or LogFile") \
710 \
711 product(bool, PrintCompilation, false, \
712 "Print compilations") \
713 \
714 diagnostic(bool, TraceNMethodInstalls, false, \
715 "Trace nmethod intallation") \
716 \
717 diagnostic(bool, TraceOSRBreakpoint, false, \
718 "Trace OSR Breakpoint ") \
719 \
720 diagnostic(bool, TraceCompileTriggered, false, \
721 "Trace compile triggered") \
722 \
723 diagnostic(bool, TraceTriggers, false, \
724 "Trace triggers") \
725 \
726 product(bool, AlwaysRestoreFPU, false, \
727 "Restore the FPU control word after every JNI call (expensive)") \
728 \
729 notproduct(bool, PrintCompilation2, false, \
730 "Print additional statistics per compilation") \
731 \
732 diagnostic(bool, PrintAdapterHandlers, false, \
733 "Print code generated for i2c/c2i adapters") \
734 \
735 diagnostic(bool, PrintAssembly, false, \
736 "Print assembly code (using external disassembler.so)") \
737 \
738 diagnostic(ccstr, PrintAssemblyOptions, NULL, \
739 "Options string passed to disassembler.so") \
740 \
741 diagnostic(bool, PrintNMethods, false, \
742 "Print assembly code for nmethods when generated") \
743 \
744 diagnostic(bool, PrintNativeNMethods, false, \
745 "Print assembly code for native nmethods when generated") \
746 \
747 develop(bool, PrintDebugInfo, false, \
748 "Print debug information for all nmethods when generated") \
749 \
750 develop(bool, PrintRelocations, false, \
751 "Print relocation information for all nmethods when generated") \
752 \
753 develop(bool, PrintDependencies, false, \
754 "Print dependency information for all nmethods when generated") \
755 \
756 develop(bool, PrintExceptionHandlers, false, \
757 "Print exception handler tables for all nmethods when generated") \
758 \
759 develop(bool, InterceptOSException, false, \
760 "Starts debugger when an implicit OS (e.g., NULL) " \
761 "exception happens") \
762 \
763 notproduct(bool, PrintCodeCache, false, \
764 "Print the compiled_code cache when exiting") \
765 \
766 develop(bool, PrintCodeCache2, false, \
767 "Print detailed info on the compiled_code cache when exiting") \
768 \
769 diagnostic(bool, PrintStubCode, false, \
770 "Print generated stub code") \
771 \
772 product(bool, StackTraceInThrowable, true, \
773 "Collect backtrace in throwable when exception happens") \
774 \
775 product(bool, OmitStackTraceInFastThrow, true, \
776 "Omit backtraces for some 'hot' exceptions in optimized code") \
777 \
778 product(bool, ProfilerPrintByteCodeStatistics, false, \
779 "Prints byte code statictics when dumping profiler output") \
780 \
781 product(bool, ProfilerRecordPC, false, \
782 "Collects tick for each 16 byte interval of compiled code") \
783 \
784 product(bool, ProfileVM, false, \
785 "Profiles ticks that fall within VM (either in the VM Thread " \
786 "or VM code called through stubs)") \
787 \
788 product(bool, ProfileIntervals, false, \
789 "Prints profiles for each interval (see ProfileIntervalsTicks)") \
790 \
791 notproduct(bool, ProfilerCheckIntervals, false, \
792 "Collect and print info on spacing of profiler ticks") \
793 \
794 develop(bool, PrintJVMWarnings, false, \
795 "Prints warnings for unimplemented JVM functions") \
796 \
797 notproduct(uintx, WarnOnStalledSpinLock, 0, \
798 "Prints warnings for stalled SpinLocks") \
799 \
800 develop(bool, InitializeJavaLangSystem, true, \
801 "Initialize java.lang.System - turn off for individual " \
802 "method debugging") \
803 \
804 develop(bool, InitializeJavaLangString, true, \
805 "Initialize java.lang.String - turn off for individual " \
806 "method debugging") \
807 \
808 develop(bool, InitializeJavaLangExceptionsErrors, true, \
809 "Initialize various error and exception classes - turn off for " \
810 "individual method debugging") \
811 \
812 product(bool, RegisterFinalizersAtInit, true, \
813 "Register finalizable objects at end of Object.<init> or " \
814 "after allocation.") \
815 \
816 develop(bool, RegisterReferences, true, \
817 "Tells whether the VM should register soft/weak/final/phantom " \
818 "references") \
819 \
820 develop(bool, IgnoreRewrites, false, \
821 "Supress rewrites of bytecodes in the oopmap generator. " \
822 "This is unsafe!") \
823 \
824 develop(bool, PrintCodeCacheExtension, false, \
825 "Print extension of code cache") \
826 \
827 develop(bool, UsePrivilegedStack, true, \
828 "Enable the security JVM functions") \
829 \
830 develop(bool, IEEEPrecision, true, \
831 "Enables IEEE precision (for INTEL only)") \
832 \
833 develop(bool, ProtectionDomainVerification, true, \
834 "Verifies protection domain before resolution in system " \
835 "dictionary") \
836 \
837 product(bool, ClassUnloading, true, \
838 "Do unloading of classes") \
839 \
840 diagnostic(bool, LinkWellKnownClasses, false, \
841 "Resolve a well known class as soon as its name is seen") \
842 \
843 develop(bool, DisableStartThread, false, \
844 "Disable starting of additional Java threads " \
845 "(for debugging only)") \
846 \
847 develop(bool, MemProfiling, false, \
848 "Write memory usage profiling to log file") \
849 \
850 notproduct(bool, PrintSystemDictionaryAtExit, false, \
851 "Prints the system dictionary at exit") \
852 \
853 diagnostic(bool, UnsyncloadClass, false, \
854 "Unstable: VM calls loadClass unsynchronized. Custom " \
855 "class loader must call VM synchronized for findClass " \
856 "and defineClass.") \
857 \
858 product(bool, AlwaysLockClassLoader, false, \
859 "Require the VM to acquire the class loader lock before calling " \
860 "loadClass() even for class loaders registering " \
861 "as parallel capable. Default false. ") \
862 \
863 product(bool, AllowParallelDefineClass, false, \
864 "Allow parallel defineClass requests for class loaders " \
865 "registering as parallel capable. Default false") \
866 \
867 product(bool, MustCallLoadClassInternal, false, \
868 "Call loadClassInternal() rather than loadClass().Default false") \
869 \
870 product_pd(bool, DontYieldALot, \
871 "Throw away obvious excess yield calls (for SOLARIS only)") \
872 \
873 product_pd(bool, ConvertSleepToYield, \
874 "Converts sleep(0) to thread yield " \
875 "(may be off for SOLARIS to improve GUI)") \
876 \
877 product(bool, ConvertYieldToSleep, false, \
878 "Converts yield to a sleep of MinSleepInterval to simulate Win32 "\
879 "behavior (SOLARIS only)") \
880 \
881 product(bool, UseBoundThreads, true, \
882 "Bind user level threads to kernel threads (for SOLARIS only)") \
883 \
884 develop(bool, UseDetachedThreads, true, \
885 "Use detached threads that are recycled upon termination " \
886 "(for SOLARIS only)") \
887 \
888 product(bool, UseLWPSynchronization, true, \
889 "Use LWP-based instead of libthread-based synchronization " \
890 "(SPARC only)") \
891 \
892 product(ccstr, SyncKnobs, NULL, \
893 "(Unstable) Various monitor synchronization tunables") \
894 \
895 product(intx, EmitSync, 0, \
896 "(Unsafe,Unstable) " \
897 " Controls emission of inline sync fast-path code") \
898 \
899 product(intx, AlwaysInflate, 0, "(Unstable) Force inflation") \
900 \
901 product(intx, Atomics, 0, \
902 "(Unsafe,Unstable) Diagnostic - Controls emission of atomics") \
903 \
904 product(intx, FenceInstruction, 0, \
905 "(Unsafe,Unstable) Experimental") \
906 \
907 product(intx, SyncFlags, 0, "(Unsafe,Unstable) Experimental Sync flags" ) \
908 \
909 product(intx, SyncVerbose, 0, "(Unstable)" ) \
910 \
911 product(intx, ClearFPUAtPark, 0, "(Unsafe,Unstable)" ) \
912 \
913 product(intx, hashCode, 0, \
914 "(Unstable) select hashCode generation algorithm" ) \
915 \
916 product(intx, WorkAroundNPTLTimedWaitHang, 1, \
917 "(Unstable, Linux-specific)" \
918 " avoid NPTL-FUTEX hang pthread_cond_timedwait" ) \
919 \
920 product(bool, FilterSpuriousWakeups , true, \
921 "Prevent spurious or premature wakeups from object.wait" \
922 "(Solaris only)") \
923 \
924 product(intx, NativeMonitorTimeout, -1, "(Unstable)" ) \
925 product(intx, NativeMonitorFlags, 0, "(Unstable)" ) \
926 product(intx, NativeMonitorSpinLimit, 20, "(Unstable)" ) \
927 \
928 develop(bool, UsePthreads, false, \
929 "Use pthread-based instead of libthread-based synchronization " \
930 "(SPARC only)") \
931 \
932 product(bool, AdjustConcurrency, false, \
933 "call thr_setconcurrency at thread create time to avoid " \
934 "LWP starvation on MP systems (For Solaris Only)") \
935 \
936 develop(bool, UpdateHotSpotCompilerFileOnError, true, \
937 "Should the system attempt to update the compiler file when " \
938 "an error occurs?") \
939 \
940 product(bool, ReduceSignalUsage, false, \
941 "Reduce the use of OS signals in Java and/or the VM") \
942 \
943 notproduct(bool, ValidateMarkSweep, false, \
944 "Do extra validation during MarkSweep collection") \
945 \
946 notproduct(bool, RecordMarkSweepCompaction, false, \
947 "Enable GC-to-GC recording and querying of compaction during " \
948 "MarkSweep") \
949 \
950 develop_pd(bool, ShareVtableStubs, \
951 "Share vtable stubs (smaller code but worse branch prediction") \
952 \
953 develop(bool, LoadLineNumberTables, true, \
954 "Tells whether the class file parser loads line number tables") \
955 \
956 develop(bool, LoadLocalVariableTables, true, \
957 "Tells whether the class file parser loads local variable tables")\
958 \
959 develop(bool, LoadLocalVariableTypeTables, true, \
960 "Tells whether the class file parser loads local variable type tables")\
961 \
962 product(bool, AllowUserSignalHandlers, false, \
963 "Do not complain if the application installs signal handlers " \
964 "(Solaris & Linux only)") \
965 \
966 product(bool, UseSignalChaining, true, \
967 "Use signal-chaining to invoke signal handlers installed " \
968 "by the application (Solaris & Linux only)") \
969 \
970 product(bool, UseAltSigs, false, \
971 "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \
972 "internal signals. (Solaris only)") \
973 \
974 product(bool, UseSpinning, false, \
975 "Use spinning in monitor inflation and before entry") \
976 \
977 product(bool, PreSpinYield, false, \
978 "Yield before inner spinning loop") \
979 \
980 product(bool, PostSpinYield, true, \
981 "Yield after inner spinning loop") \
982 \
983 product(bool, AllowJNIEnvProxy, false, \
984 "Allow JNIEnv proxies for jdbx") \
985 \
986 product(bool, JNIDetachReleasesMonitors, true, \
987 "JNI DetachCurrentThread releases monitors owned by thread") \
988 \
989 product(bool, RestoreMXCSROnJNICalls, false, \
990 "Restore MXCSR when returning from JNI calls") \
991 \
992 product(bool, CheckJNICalls, false, \
993 "Verify all arguments to JNI calls") \
994 \
995 product(bool, UseFastJNIAccessors, true, \
996 "Use optimized versions of Get<Primitive>Field") \
997 \
998 product(bool, EagerXrunInit, false, \
999 "Eagerly initialize -Xrun libraries; allows startup profiling, " \
1000 " but not all -Xrun libraries may support the state of the VM at this time") \
1001 \
1002 product(bool, PreserveAllAnnotations, false, \
1003 "Preserve RuntimeInvisibleAnnotations as well as RuntimeVisibleAnnotations") \
1004 \
1005 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \
1006 "Number of OutOfMemoryErrors preallocated with backtrace") \
1007 \
1008 product(bool, LazyBootClassLoader, true, \
1009 "Enable/disable lazy opening of boot class path entries") \
1010 \
1011 diagnostic(bool, UseIncDec, true, \
1012 "Use INC, DEC instructions on x86") \
1013 \
1014 product(bool, UseNewLongLShift, false, \
1015 "Use optimized bitwise shift left") \
1016 \
1017 product(bool, UseStoreImmI16, true, \
1018 "Use store immediate 16-bits value instruction on x86") \
1019 \
1020 product(bool, UseAddressNop, false, \
1021 "Use '0F 1F [addr]' NOP instructions on x86 cpus") \
1022 \
1023 product(bool, UseXmmLoadAndClearUpper, true, \
1024 "Load low part of XMM register and clear upper part") \
1025 \
1026 product(bool, UseXmmRegToRegMoveAll, false, \
1027 "Copy all XMM register bits when moving value between registers") \
1028 \
1029 product(bool, UseXmmI2D, false, \
1030 "Use SSE2 CVTDQ2PD instruction to convert Integer to Double") \
1031 \
1032 product(bool, UseXmmI2F, false, \
1033 "Use SSE2 CVTDQ2PS instruction to convert Integer to Float") \
1034 \
1035 product(bool, UseXMMForArrayCopy, false, \
1036 "Use SSE2 MOVQ instruction for Arraycopy") \
1037 \
1038 product(bool, UseUnalignedLoadStores, false, \
1039 "Use SSE2 MOVDQU instruction for Arraycopy") \
1040 \
1041 product(intx, FieldsAllocationStyle, 1, \
1042 "0 - type based with oops first, 1 - with oops last") \
1043 \
1044 product(bool, CompactFields, true, \
1045 "Allocate nonstatic fields in gaps between previous fields") \
1046 \
1047 notproduct(bool, PrintCompactFieldsSavings, false, \
1048 "Print how many words were saved with CompactFields") \
1049 \
1050 product(bool, UseBiasedLocking, true, \
1051 "Enable biased locking in JVM") \
1052 \
1053 product(intx, BiasedLockingStartupDelay, 4000, \
1054 "Number of milliseconds to wait before enabling biased locking") \
1055 \
1056 diagnostic(bool, PrintBiasedLockingStatistics, false, \
1057 "Print statistics of biased locking in JVM") \
1058 \
1059 product(intx, BiasedLockingBulkRebiasThreshold, 20, \
1060 "Threshold of number of revocations per type to try to " \
1061 "rebias all objects in the heap of that type") \
1062 \
1063 product(intx, BiasedLockingBulkRevokeThreshold, 40, \
1064 "Threshold of number of revocations per type to permanently " \
1065 "revoke biases of all objects in the heap of that type") \
1066 \
1067 product(intx, BiasedLockingDecayTime, 25000, \
1068 "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \
1069 "type after previous bulk rebias") \
1070 \
1071 /* tracing */ \
1072 \
1073 notproduct(bool, TraceRuntimeCalls, false, \
1074 "Trace run-time calls") \
1075 \
1076 develop(bool, TraceJNICalls, false, \
1077 "Trace JNI calls") \
1078 \
1079 notproduct(bool, TraceJVMCalls, false, \
1080 "Trace JVM calls") \
1081 \
1082 product(ccstr, TraceJVMTI, NULL, \
1083 "Trace flags for JVMTI functions and events") \
1084 \
1085 product(bool, ForceFullGCJVMTIEpilogues, false, \
1086 "Force 'Full GC' was done semantics for JVMTI GC epilogues") \
1087 \
1088 /* This option can change an EMCP method into an obsolete method. */ \
1089 /* This can affect tests that except specific methods to be EMCP. */ \
1090 /* This option should be used with caution. */ \
1091 product(bool, StressLdcRewrite, false, \
1092 "Force ldc -> ldc_w rewrite during RedefineClasses") \
1093 \
1094 product(intx, TraceRedefineClasses, 0, \
1095 "Trace level for JVMTI RedefineClasses") \
1096 \
1097 /* change to false by default sometime after Mustang */ \
1098 product(bool, VerifyMergedCPBytecodes, true, \
1099 "Verify bytecodes after RedefineClasses constant pool merging") \
1100 \
1101 develop(bool, TraceJNIHandleAllocation, false, \
1102 "Trace allocation/deallocation of JNI handle blocks") \
1103 \
1104 develop(bool, TraceThreadEvents, false, \
1105 "Trace all thread events") \
1106 \
1107 develop(bool, TraceBytecodes, false, \
1108 "Trace bytecode execution") \
1109 \
1110 develop(bool, TraceClassInitialization, false, \
1111 "Trace class initialization") \
1112 \
1113 develop(bool, TraceExceptions, false, \
1114 "Trace exceptions") \
1115 \
1116 develop(bool, TraceICs, false, \
1117 "Trace inline cache changes") \
1118 \
1119 notproduct(bool, TraceInvocationCounterOverflow, false, \
1120 "Trace method invocation counter overflow") \
1121 \
1122 develop(bool, TraceInlineCacheClearing, false, \
1123 "Trace clearing of inline caches in nmethods") \
1124 \
1125 develop(bool, TraceDependencies, false, \
1126 "Trace dependencies") \
1127 \
1128 develop(bool, VerifyDependencies, trueInDebug, \
1129 "Exercise and verify the compilation dependency mechanism") \
1130 \
1131 develop(bool, TraceNewOopMapGeneration, false, \
1132 "Trace OopMapGeneration") \
1133 \
1134 develop(bool, TraceNewOopMapGenerationDetailed, false, \
1135 "Trace OopMapGeneration: print detailed cell states") \
1136 \
1137 develop(bool, TimeOopMap, false, \
1138 "Time calls to GenerateOopMap::compute_map() in sum") \
1139 \
1140 develop(bool, TimeOopMap2, false, \
1141 "Time calls to GenerateOopMap::compute_map() individually") \
1142 \
1143 develop(bool, TraceMonitorMismatch, false, \
1144 "Trace monitor matching failures during OopMapGeneration") \
1145 \
1146 develop(bool, TraceOopMapRewrites, false, \
1147 "Trace rewritting of method oops during oop map generation") \
1148 \
1149 develop(bool, TraceSafepoint, false, \
1150 "Trace safepoint operations") \
1151 \
1152 develop(bool, TraceICBuffer, false, \
1153 "Trace usage of IC buffer") \
1154 \
1155 develop(bool, TraceCompiledIC, false, \
1156 "Trace changes of compiled IC") \
1157 \
1158 notproduct(bool, TraceZapDeadLocals, false, \
1159 "Trace zapping dead locals") \
1160 \
1161 develop(bool, TraceStartupTime, false, \
1162 "Trace setup time") \
1163 \
1164 develop(bool, TraceHPI, false, \
1165 "Trace Host Porting Interface (HPI)") \
1166 \
1167 product(ccstr, HPILibPath, NULL, \
1168 "Specify alternate path to HPI library") \
1169 \
1170 develop(bool, TraceProtectionDomainVerification, false, \
1171 "Trace protection domain verifcation") \
1172 \
1173 develop(bool, TraceClearedExceptions, false, \
1174 "Prints when an exception is forcibly cleared") \
1175 \
1176 product(bool, TraceClassResolution, false, \
1177 "Trace all constant pool resolutions (for debugging)") \
1178 \
1179 product(bool, TraceBiasedLocking, false, \
1180 "Trace biased locking in JVM") \
1181 \
1182 product(bool, TraceMonitorInflation, false, \
1183 "Trace monitor inflation in JVM") \
1184 \
1185 /* assembler */ \
1186 product(bool, Use486InstrsOnly, false, \
1187 "Use 80486 Compliant instruction subset") \
1188 \
1189 /* gc */ \
1190 \
1191 product(bool, UseSerialGC, false, \
1192 "Use the serial garbage collector") \
1193 \
1194 experimental(bool, UseG1GC, false, \
1195 "Use the Garbage-First garbage collector") \
1196 \
1197 product(bool, UseParallelGC, false, \
1198 "Use the Parallel Scavenge garbage collector") \
1199 \
1200 product(bool, UseParallelOldGC, false, \
1201 "Use the Parallel Old garbage collector") \
1202 \
1203 product(bool, UseParallelOldGCCompacting, true, \
1204 "In the Parallel Old garbage collector use parallel compaction") \
1205 \
1206 product(bool, UseParallelDensePrefixUpdate, true, \
1207 "In the Parallel Old garbage collector use parallel dense" \
1208 " prefix update") \
1209 \
1210 product(uintx, HeapMaximumCompactionInterval, 20, \
1211 "How often should we maximally compact the heap (not allowing " \
1212 "any dead space)") \
1213 \
1214 product(uintx, HeapFirstMaximumCompactionCount, 3, \
1215 "The collection count for the first maximum compaction") \
1216 \
1217 product(bool, UseMaximumCompactionOnSystemGC, true, \
1218 "In the Parallel Old garbage collector maximum compaction for " \
1219 "a system GC") \
1220 \
1221 product(uintx, ParallelOldDeadWoodLimiterMean, 50, \
1222 "The mean used by the par compact dead wood" \
1223 "limiter (a number between 0-100).") \
1224 \
1225 product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \
1226 "The standard deviation used by the par compact dead wood" \
1227 "limiter (a number between 0-100).") \
1228 \
1229 product(bool, UseParallelOldGCDensePrefix, true, \
1230 "Use a dense prefix with the Parallel Old garbage collector") \
1231 \
1232 product(uintx, ParallelGCThreads, 0, \
1233 "Number of parallel threads parallel gc will use") \
1234 \
1235 product(uintx, ParallelCMSThreads, 0, \
1236 "Max number of threads CMS will use for concurrent work") \
1237 \
1238 develop(bool, ParallelOldGCSplitALot, false, \
1239 "Provoke splitting (copying data from a young gen space to" \
1240 "multiple destination spaces)") \
1241 \
1242 develop(uintx, ParallelOldGCSplitInterval, 3, \
1243 "How often to provoke splitting a young gen space") \
1244 \
1245 develop(bool, TraceRegionTasksQueuing, false, \
1246 "Trace the queuing of the region tasks") \
1247 \
1248 product(uintx, ParallelMarkingThreads, 0, \
1249 "Number of marking threads concurrent gc will use") \
1250 \
1251 product(uintx, YoungPLABSize, 4096, \
1252 "Size of young gen promotion labs (in HeapWords)") \
1253 \
1254 product(uintx, OldPLABSize, 1024, \
1255 "Size of old gen promotion labs (in HeapWords)") \
1256 \
1257 product(uintx, GCTaskTimeStampEntries, 200, \
1258 "Number of time stamp entries per gc worker thread") \
1259 \
1260 product(bool, AlwaysTenure, false, \
1261 "Always tenure objects in eden. (ParallelGC only)") \
1262 \
1263 product(bool, NeverTenure, false, \
1264 "Never tenure objects in eden, May tenure on overflow" \
1265 " (ParallelGC only)") \
1266 \
1267 product(bool, ScavengeBeforeFullGC, true, \
1268 "Scavenge youngest generation before each full GC," \
1269 " used with UseParallelGC") \
1270 \
1271 develop(bool, ScavengeWithObjectsInToSpace, false, \
1272 "Allow scavenges to occur when to_space contains objects.") \
1273 \
1274 product(bool, UseConcMarkSweepGC, false, \
1275 "Use Concurrent Mark-Sweep GC in the old generation") \
1276 \
1277 product(bool, ExplicitGCInvokesConcurrent, false, \
1278 "A System.gc() request invokes a concurrent collection;" \
1279 " (effective only when UseConcMarkSweepGC)") \
1280 \
1281 product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \
1282 "A System.gc() request invokes a concurrent collection and" \
1283 " also unloads classes during such a concurrent gc cycle " \
1284 " (effective only when UseConcMarkSweepGC)") \
1285 \
1286 develop(bool, UseCMSAdaptiveFreeLists, true, \
1287 "Use Adaptive Free Lists in the CMS generation") \
1288 \
1289 develop(bool, UseAsyncConcMarkSweepGC, true, \
1290 "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\
1291 \
1292 develop(bool, RotateCMSCollectionTypes, false, \
1293 "Rotate the CMS collections among concurrent and STW") \
1294 \
1295 product(bool, UseCMSBestFit, true, \
1296 "Use CMS best fit allocation strategy") \
1297 \
1298 product(bool, UseCMSCollectionPassing, true, \
1299 "Use passing of collection from background to foreground") \
1300 \
1301 product(bool, UseParNewGC, false, \
1302 "Use parallel threads in the new generation.") \
1303 \
1304 product(bool, ParallelGCVerbose, false, \
1305 "Verbose output for parallel GC.") \
1306 \
1307 product(intx, ParallelGCBufferWastePct, 10, \
1308 "wasted fraction of parallel allocation buffer.") \
1309 \
1310 product(bool, ParallelGCRetainPLAB, true, \
1311 "Retain parallel allocation buffers across scavenges.") \
1312 \
1313 product(intx, TargetPLABWastePct, 10, \
1314 "target wasted space in last buffer as pct of overall allocation")\
1315 \
1316 product(uintx, PLABWeight, 75, \
1317 "Percentage (0-100) used to weight the current sample when" \
1318 "computing exponentially decaying average for ResizePLAB.") \
1319 \
1320 product(bool, ResizePLAB, true, \
1321 "Dynamically resize (survivor space) promotion labs") \
1322 \
1323 product(bool, PrintPLAB, false, \
1324 "Print (survivor space) promotion labs sizing decisions") \
1325 \
1326 product(intx, ParGCArrayScanChunk, 50, \
1327 "Scan a subset and push remainder, if array is bigger than this") \
1328 \
1329 product(bool, ParGCUseLocalOverflow, false, \
1330 "Instead of a global overflow list, use local overflow stacks") \
1331 \
1332 product(bool, ParGCTrimOverflow, true, \
1333 "Eagerly trim the local overflow lists (when ParGCUseLocalOverflow") \
1334 \
1335 notproduct(bool, ParGCWorkQueueOverflowALot, false, \
1336 "Whether we should simulate work queue overflow in ParNew") \
1337 \
1338 notproduct(uintx, ParGCWorkQueueOverflowInterval, 1000, \
1339 "An `interval' counter that determines how frequently" \
1340 " we simulate overflow; a smaller number increases frequency") \
1341 \
1342 product(uintx, ParGCDesiredObjsFromOverflowList, 20, \
1343 "The desired number of objects to claim from the overflow list") \
1344 \
1345 product(uintx, CMSParPromoteBlocksToClaim, 50, \
1346 "Number of blocks to attempt to claim when refilling CMS LAB for "\
1347 "parallel GC.") \
1348 \
1349 product(bool, AlwaysPreTouch, false, \
1350 "It forces all freshly committed pages to be pre-touched.") \
1351 \
1352 product(bool, CMSUseOldDefaults, false, \
1353 "A flag temporarily introduced to allow reverting to some older" \
1354 "default settings; older as of 6.0 ") \
1355 \
1356 product(intx, CMSYoungGenPerWorker, 16*M, \
1357 "The amount of young gen chosen by default per GC worker " \
1358 "thread available ") \
1359 \
1360 product(bool, GCOverheadReporting, false, \
1361 "Enables the GC overhead reporting facility") \
1362 \
1363 product(intx, GCOverheadReportingPeriodMS, 100, \
1364 "Reporting period for conc GC overhead reporting, in ms ") \
1365 \
1366 product(bool, CMSIncrementalMode, false, \
1367 "Whether CMS GC should operate in \"incremental\" mode") \
1368 \
1369 product(uintx, CMSIncrementalDutyCycle, 10, \
1370 "CMS incremental mode duty cycle (a percentage, 0-100). If" \
1371 "CMSIncrementalPacing is enabled, then this is just the initial" \
1372 "value") \
1373 \
1374 product(bool, CMSIncrementalPacing, true, \
1375 "Whether the CMS incremental mode duty cycle should be " \
1376 "automatically adjusted") \
1377 \
1378 product(uintx, CMSIncrementalDutyCycleMin, 0, \
1379 "Lower bound on the duty cycle when CMSIncrementalPacing is" \
1380 "enabled (a percentage, 0-100).") \
1381 \
1382 product(uintx, CMSIncrementalSafetyFactor, 10, \
1383 "Percentage (0-100) used to add conservatism when computing the" \
1384 "duty cycle.") \
1385 \
1386 product(uintx, CMSIncrementalOffset, 0, \
1387 "Percentage (0-100) by which the CMS incremental mode duty cycle" \
1388 "is shifted to the right within the period between young GCs") \
1389 \
1390 product(uintx, CMSExpAvgFactor, 25, \
1391 "Percentage (0-100) used to weight the current sample when" \
1392 "computing exponential averages for CMS statistics.") \
1393 \
1394 product(uintx, CMS_FLSWeight, 50, \
1395 "Percentage (0-100) used to weight the current sample when" \
1396 "computing exponentially decating averages for CMS FLS statistics.") \
1397 \
1398 product(uintx, CMS_FLSPadding, 2, \
1399 "The multiple of deviation from mean to use for buffering" \
1400 "against volatility in free list demand.") \
1401 \
1402 product(uintx, FLSCoalescePolicy, 2, \
1403 "CMS: Aggression level for coalescing, increasing from 0 to 4") \
1404 \
1405 product(uintx, CMS_SweepWeight, 50, \
1406 "Percentage (0-100) used to weight the current sample when" \
1407 "computing exponentially decaying average for inter-sweep duration.") \
1408 \
1409 product(uintx, CMS_SweepPadding, 2, \
1410 "The multiple of deviation from mean to use for buffering" \
1411 "against volatility in inter-sweep duration.") \
1412 \
1413 product(uintx, CMS_SweepTimerThresholdMillis, 10, \
1414 "Skip block flux-rate sampling for an epoch unless inter-sweep " \
1415 " duration exceeds this threhold in milliseconds") \
1416 \
1417 develop(bool, CMSTraceIncrementalMode, false, \
1418 "Trace CMS incremental mode") \
1419 \
1420 develop(bool, CMSTraceIncrementalPacing, false, \
1421 "Trace CMS incremental mode pacing computation") \
1422 \
1423 develop(bool, CMSTraceThreadState, false, \
1424 "Trace the CMS thread state (enable the trace_state() method)") \
1425 \
1426 product(bool, CMSClassUnloadingEnabled, false, \
1427 "Whether class unloading enabled when using CMS GC") \
1428 \
1429 product(uintx, CMSClassUnloadingMaxInterval, 0, \
1430 "When CMS class unloading is enabled, the maximum CMS cycle count"\
1431 " for which classes may not be unloaded") \
1432 \
1433 product(bool, CMSCompactWhenClearAllSoftRefs, true, \
1434 "Compact when asked to collect CMS gen with clear_all_soft_refs") \
1435 \
1436 product(bool, UseCMSCompactAtFullCollection, true, \
1437 "Use mark sweep compact at full collections") \
1438 \
1439 product(uintx, CMSFullGCsBeforeCompaction, 0, \
1440 "Number of CMS full collection done before compaction if > 0") \
1441 \
1442 develop(intx, CMSDictionaryChoice, 0, \
1443 "Use BinaryTreeDictionary as default in the CMS generation") \
1444 \
1445 product(uintx, CMSIndexedFreeListReplenish, 4, \
1446 "Replenish and indexed free list with this number of chunks") \
1447 \
1448 product(bool, CMSLoopWarn, false, \
1449 "Warn in case of excessive CMS looping") \
1450 \
1451 develop(bool, CMSOverflowEarlyRestoration, false, \
1452 "Whether preserved marks should be restored early") \
1453 \
1454 product(uintx, CMSMarkStackSize, NOT_LP64(32*K) LP64_ONLY(4*M), \
1455 "Size of CMS marking stack") \
1456 \
1457 product(uintx, CMSMarkStackSizeMax, NOT_LP64(4*M) LP64_ONLY(512*M), \
1458 "Max size of CMS marking stack") \
1459 \
1460 notproduct(bool, CMSMarkStackOverflowALot, false, \
1461 "Whether we should simulate frequent marking stack / work queue" \
1462 " overflow") \
1463 \
1464 notproduct(uintx, CMSMarkStackOverflowInterval, 1000, \
1465 "An `interval' counter that determines how frequently" \
1466 " we simulate overflow; a smaller number increases frequency") \
1467 \
1468 product(uintx, CMSMaxAbortablePrecleanLoops, 0, \
1469 "(Temporary, subject to experimentation)" \
1470 "Maximum number of abortable preclean iterations, if > 0") \
1471 \
1472 product(intx, CMSMaxAbortablePrecleanTime, 5000, \
1473 "(Temporary, subject to experimentation)" \
1474 "Maximum time in abortable preclean in ms") \
1475 \
1476 product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \
1477 "(Temporary, subject to experimentation)" \
1478 "Nominal minimum work per abortable preclean iteration") \
1479 \
1480 product(intx, CMSAbortablePrecleanWaitMillis, 100, \
1481 "(Temporary, subject to experimentation)" \
1482 " Time that we sleep between iterations when not given" \
1483 " enough work per iteration") \
1484 \
1485 product(uintx, CMSRescanMultiple, 32, \
1486 "Size (in cards) of CMS parallel rescan task") \
1487 \
1488 product(uintx, CMSConcMarkMultiple, 32, \
1489 "Size (in cards) of CMS concurrent MT marking task") \
1490 \
1491 product(uintx, CMSRevisitStackSize, 1*M, \
1492 "Size of CMS KlassKlass revisit stack") \
1493 \
1494 product(bool, CMSAbortSemantics, false, \
1495 "Whether abort-on-overflow semantics is implemented") \
1496 \
1497 product(bool, CMSParallelRemarkEnabled, true, \
1498 "Whether parallel remark enabled (only if ParNewGC)") \
1499 \
1500 product(bool, CMSParallelSurvivorRemarkEnabled, true, \
1501 "Whether parallel remark of survivor space" \
1502 " enabled (effective only if CMSParallelRemarkEnabled)") \
1503 \
1504 product(bool, CMSPLABRecordAlways, true, \
1505 "Whether to always record survivor space PLAB bdries" \
1506 " (effective only if CMSParallelSurvivorRemarkEnabled)") \
1507 \
1508 product(bool, CMSConcurrentMTEnabled, true, \
1509 "Whether multi-threaded concurrent work enabled (if ParNewGC)") \
1510 \
1511 product(bool, CMSPermGenPrecleaningEnabled, true, \
1512 "Whether concurrent precleaning enabled in perm gen" \
1513 " (effective only when CMSPrecleaningEnabled is true)") \
1514 \
1515 product(bool, CMSPrecleaningEnabled, true, \
1516 "Whether concurrent precleaning enabled") \
1517 \
1518 product(uintx, CMSPrecleanIter, 3, \
1519 "Maximum number of precleaning iteration passes") \
1520 \
1521 product(uintx, CMSPrecleanNumerator, 2, \
1522 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \
1523 " ratio") \
1524 \
1525 product(uintx, CMSPrecleanDenominator, 3, \
1526 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \
1527 " ratio") \
1528 \
1529 product(bool, CMSPrecleanRefLists1, true, \
1530 "Preclean ref lists during (initial) preclean phase") \
1531 \
1532 product(bool, CMSPrecleanRefLists2, false, \
1533 "Preclean ref lists during abortable preclean phase") \
1534 \
1535 product(bool, CMSPrecleanSurvivors1, false, \
1536 "Preclean survivors during (initial) preclean phase") \
1537 \
1538 product(bool, CMSPrecleanSurvivors2, true, \
1539 "Preclean survivors during abortable preclean phase") \
1540 \
1541 product(uintx, CMSPrecleanThreshold, 1000, \
1542 "Don't re-iterate if #dirty cards less than this") \
1543 \
1544 product(bool, CMSCleanOnEnter, true, \
1545 "Clean-on-enter optimization for reducing number of dirty cards") \
1546 \
1547 product(uintx, CMSRemarkVerifyVariant, 1, \
1548 "Choose variant (1,2) of verification following remark") \
1549 \
1550 product(uintx, CMSScheduleRemarkEdenSizeThreshold, 2*M, \
1551 "If Eden used is below this value, don't try to schedule remark") \
1552 \
1553 product(uintx, CMSScheduleRemarkEdenPenetration, 50, \
1554 "The Eden occupancy % at which to try and schedule remark pause") \
1555 \
1556 product(uintx, CMSScheduleRemarkSamplingRatio, 5, \
1557 "Start sampling Eden top at least before yg occupancy reaches" \
1558 " 1/<ratio> of the size at which we plan to schedule remark") \
1559 \
1560 product(uintx, CMSSamplingGrain, 16*K, \
1561 "The minimum distance between eden samples for CMS (see above)") \
1562 \
1563 product(bool, CMSScavengeBeforeRemark, false, \
1564 "Attempt scavenge before the CMS remark step") \
1565 \
1566 develop(bool, CMSTraceSweeper, false, \
1567 "Trace some actions of the CMS sweeper") \
1568 \
1569 product(uintx, CMSWorkQueueDrainThreshold, 10, \
1570 "Don't drain below this size per parallel worker/thief") \
1571 \
1572 product(intx, CMSWaitDuration, 2000, \
1573 "Time in milliseconds that CMS thread waits for young GC") \
1574 \
1575 product(bool, CMSYield, true, \
1576 "Yield between steps of concurrent mark & sweep") \
1577 \
1578 product(uintx, CMSBitMapYieldQuantum, 10*M, \
1579 "Bitmap operations should process at most this many bits" \
1580 "between yields") \
1581 \
1582 diagnostic(bool, FLSVerifyAllHeapReferences, false, \
1583 "Verify that all refs across the FLS boundary " \
1584 " are to valid objects") \
1585 \
1586 diagnostic(bool, FLSVerifyLists, false, \
1587 "Do lots of (expensive) FreeListSpace verification") \
1588 \
1589 diagnostic(bool, FLSVerifyIndexTable, false, \
1590 "Do lots of (expensive) FLS index table verification") \
1591 \
1592 develop(bool, FLSVerifyDictionary, false, \
1593 "Do lots of (expensive) FLS dictionary verification") \
1594 \
1595 develop(bool, VerifyBlockOffsetArray, false, \
1596 "Do (expensive!) block offset array verification") \
1597 \
1598 product(bool, BlockOffsetArrayUseUnallocatedBlock, trueInDebug, \
1599 "Maintain _unallocated_block in BlockOffsetArray" \
1600 " (currently applicable only to CMS collector)") \
1601 \
1602 develop(bool, TraceCMSState, false, \
1603 "Trace the state of the CMS collection") \
1604 \
1605 product(intx, RefDiscoveryPolicy, 0, \
1606 "Whether reference-based(0) or referent-based(1)") \
1607 \
1608 product(bool, ParallelRefProcEnabled, false, \
1609 "Enable parallel reference processing whenever possible") \
1610 \
1611 product(bool, ParallelRefProcBalancingEnabled, true, \
1612 "Enable balancing of reference processing queues") \
1613 \
1614 product(intx, CMSTriggerRatio, 80, \
1615 "Percentage of MinHeapFreeRatio in CMS generation that is " \
1616 " allocated before a CMS collection cycle commences") \
1617 \
1618 product(intx, CMSTriggerPermRatio, 80, \
1619 "Percentage of MinHeapFreeRatio in the CMS perm generation that" \
1620 " is allocated before a CMS collection cycle commences, that " \
1621 " also collects the perm generation") \
1622 \
1623 product(uintx, CMSBootstrapOccupancy, 50, \
1624 "Percentage CMS generation occupancy at which to " \
1625 " initiate CMS collection for bootstrapping collection stats") \
1626 \
1627 product(intx, CMSInitiatingOccupancyFraction, -1, \
1628 "Percentage CMS generation occupancy to start a CMS collection " \
1629 " cycle (A negative value means that CMSTriggerRatio is used)") \
1630 \
1631 product(intx, CMSInitiatingPermOccupancyFraction, -1, \
1632 "Percentage CMS perm generation occupancy to start a CMScollection"\
1633 " cycle (A negative value means that CMSTriggerPermRatio is used)")\
1634 \
1635 product(bool, UseCMSInitiatingOccupancyOnly, false, \
1636 "Only use occupancy as a crierion for starting a CMS collection") \
1637 \
1638 product(intx, CMSIsTooFullPercentage, 98, \
1639 "An absolute ceiling above which CMS will always consider the" \
1640 " perm gen ripe for collection") \
1641 \
1642 develop(bool, CMSTestInFreeList, false, \
1643 "Check if the coalesced range is already in the " \
1644 "free lists as claimed.") \
1645 \
1646 notproduct(bool, CMSVerifyReturnedBytes, false, \
1647 "Check that all the garbage collected was returned to the " \
1648 "free lists.") \
1649 \
1650 notproduct(bool, ScavengeALot, false, \
1651 "Force scavenge at every Nth exit from the runtime system " \
1652 "(N=ScavengeALotInterval)") \
1653 \
1654 develop(bool, FullGCALot, false, \
1655 "Force full gc at every Nth exit from the runtime system " \
1656 "(N=FullGCALotInterval)") \
1657 \
1658 notproduct(bool, GCALotAtAllSafepoints, false, \
1659 "Enforce ScavengeALot/GCALot at all potential safepoints") \
1660 \
1661 product(bool, HandlePromotionFailure, true, \
1662 "The youngest generation collection does not require" \
1663 " a guarantee of full promotion of all live objects.") \
1664 \
1665 notproduct(bool, PromotionFailureALot, false, \
1666 "Use promotion failure handling on every youngest generation " \
1667 "collection") \
1668 \
1669 develop(uintx, PromotionFailureALotCount, 1000, \
1670 "Number of promotion failures occurring at ParGCAllocBuffer" \
1671 "refill attempts (ParNew) or promotion attempts " \
1672 "(other young collectors) ") \
1673 \
1674 develop(uintx, PromotionFailureALotInterval, 5, \
1675 "Total collections between promotion failures alot") \
1676 \
1677 develop(intx, WorkStealingSleepMillis, 1, \
1678 "Sleep time when sleep is used for yields") \
1679 \
1680 develop(uintx, WorkStealingYieldsBeforeSleep, 1000, \
1681 "Number of yields before a sleep is done during workstealing") \
1682 \
1683 develop(uintx, WorkStealingHardSpins, 4096, \
1684 "Number of iterations in a spin loop between checks on " \
1685 "time out of hard spin") \
1686 \
1687 develop(uintx, WorkStealingSpinToYieldRatio, 10, \
1688 "Ratio of hard spins to calls to yield") \
1689 \
1690 product(uintx, PreserveMarkStackSize, 1024, \
1691 "Size for stack used in promotion failure handling") \
1692 \
1693 product_pd(bool, UseTLAB, "Use thread-local object allocation") \
1694 \
1695 product_pd(bool, ResizeTLAB, \
1696 "Dynamically resize tlab size for threads") \
1697 \
1698 product(bool, ZeroTLAB, false, \
1699 "Zero out the newly created TLAB") \
1700 \
1701 product(bool, FastTLABRefill, true, \
1702 "Use fast TLAB refill code") \
1703 \
1704 product(bool, PrintTLAB, false, \
1705 "Print various TLAB related information") \
1706 \
1707 product(bool, TLABStats, true, \
1708 "Print various TLAB related information") \
1709 \
1710 product_pd(bool, NeverActAsServerClassMachine, \
1711 "Never act like a server-class machine") \
1712 \
1713 product(bool, AlwaysActAsServerClassMachine, false, \
1714 "Always act like a server-class machine") \
1715 \
1716 product_pd(uintx, DefaultMaxRAM, \
1717 "Maximum real memory size for setting server class heap size") \
1718 \
1719 product(uintx, DefaultMaxRAMFraction, 4, \
1720 "Fraction (1/n) of real memory used for server class max heap") \
1721 \
1722 product(uintx, DefaultInitialRAMFraction, 64, \
1723 "Fraction (1/n) of real memory used for server class initial heap") \
1724 \
1725 product(bool, UseAutoGCSelectPolicy, false, \
1726 "Use automatic collection selection policy") \
1727 \
1728 product(uintx, AutoGCSelectPauseMillis, 5000, \
1729 "Automatic GC selection pause threshhold in ms") \
1730 \
1731 product(bool, UseAdaptiveSizePolicy, true, \
1732 "Use adaptive generation sizing policies") \
1733 \
1734 product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \
1735 "Use adaptive survivor sizing policies") \
1736 \
1737 product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \
1738 "Use adaptive young-old sizing policies at minor collections") \
1739 \
1740 product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \
1741 "Use adaptive young-old sizing policies at major collections") \
1742 \
1743 product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \
1744 "Use statistics from System.GC for adaptive size policy") \
1745 \
1746 product(bool, UseAdaptiveGCBoundary, false, \
1747 "Allow young-old boundary to move") \
1748 \
1749 develop(bool, TraceAdaptiveGCBoundary, false, \
1750 "Trace young-old boundary moves") \
1751 \
1752 develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \
1753 "Resize the virtual spaces of the young or old generations") \
1754 \
1755 product(uintx, AdaptiveSizeThroughPutPolicy, 0, \
1756 "Policy for changeing generation size for throughput goals") \
1757 \
1758 product(uintx, AdaptiveSizePausePolicy, 0, \
1759 "Policy for changing generation size for pause goals") \
1760 \
1761 develop(bool, PSAdjustTenuredGenForMinorPause, false, \
1762 "Adjust tenured generation to achive a minor pause goal") \
1763 \
1764 develop(bool, PSAdjustYoungGenForMajorPause, false, \
1765 "Adjust young generation to achive a major pause goal") \
1766 \
1767 product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \
1768 "Number of steps where heuristics is used before data is used") \
1769 \
1770 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \
1771 "Number of collections before the adaptive sizing is started") \
1772 \
1773 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \
1774 "Collecton interval for printing information, zero => never") \
1775 \
1776 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \
1777 "Use adaptive minimum footprint as a goal") \
1778 \
1779 product(uintx, AdaptiveSizePolicyWeight, 10, \
1780 "Weight given to exponential resizing, between 0 and 100") \
1781 \
1782 product(uintx, AdaptiveTimeWeight, 25, \
1783 "Weight given to time in adaptive policy, between 0 and 100") \
1784 \
1785 product(uintx, PausePadding, 1, \
1786 "How much buffer to keep for pause time") \
1787 \
1788 product(uintx, PromotedPadding, 3, \
1789 "How much buffer to keep for promotion failure") \
1790 \
1791 product(uintx, SurvivorPadding, 3, \
1792 "How much buffer to keep for survivor overflow") \
1793 \
1794 product(uintx, AdaptivePermSizeWeight, 20, \
1795 "Weight for perm gen exponential resizing, between 0 and 100") \
1796 \
1797 product(uintx, PermGenPadding, 3, \
1798 "How much buffer to keep for perm gen sizing") \
1799 \
1800 product(uintx, ThresholdTolerance, 10, \
1801 "Allowed collection cost difference between generations") \
1802 \
1803 product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \
1804 "If collection costs are within margin, reduce both by full delta") \
1805 \
1806 product(uintx, YoungGenerationSizeIncrement, 20, \
1807 "Adaptive size percentage change in young generation") \
1808 \
1809 product(uintx, YoungGenerationSizeSupplement, 80, \
1810 "Supplement to YoungedGenerationSizeIncrement used at startup") \
1811 \
1812 product(uintx, YoungGenerationSizeSupplementDecay, 8, \
1813 "Decay factor to YoungedGenerationSizeSupplement") \
1814 \
1815 product(uintx, TenuredGenerationSizeIncrement, 20, \
1816 "Adaptive size percentage change in tenured generation") \
1817 \
1818 product(uintx, TenuredGenerationSizeSupplement, 80, \
1819 "Supplement to TenuredGenerationSizeIncrement used at startup") \
1820 \
1821 product(uintx, TenuredGenerationSizeSupplementDecay, 2, \
1822 "Decay factor to TenuredGenerationSizeIncrement") \
1823 \
1824 product(uintx, MaxGCPauseMillis, max_uintx, \
1825 "Adaptive size policy maximum GC pause time goal in msec, " \
1826 "or (G1 Only) the max. GC time per MMU time slice") \
1827 \
1828 product(intx, GCPauseIntervalMillis, 500, \
1829 "Time slice for MMU specification") \
1830 \
1831 product(uintx, MaxGCMinorPauseMillis, max_uintx, \
1832 "Adaptive size policy maximum GC minor pause time goal in msec") \
1833 \
1834 product(uintx, GCTimeRatio, 99, \
1835 "Adaptive size policy application time to GC time ratio") \
1836 \
1837 product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \
1838 "Adaptive size scale down factor for shrinking") \
1839 \
1840 product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \
1841 "Adaptive size decays the major cost for long major intervals") \
1842 \
1843 product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \
1844 "Time scale over which major costs decay") \
1845 \
1846 product(uintx, MinSurvivorRatio, 3, \
1847 "Minimum ratio of young generation/survivor space size") \
1848 \
1849 product(uintx, InitialSurvivorRatio, 8, \
1850 "Initial ratio of eden/survivor space size") \
1851 \
1852 product(uintx, BaseFootPrintEstimate, 256*M, \
1853 "Estimate of footprint other than Java Heap") \
1854 \
1855 product(bool, UseGCOverheadLimit, true, \
1856 "Use policy to limit of proportion of time spent in GC " \
1857 "before an OutOfMemory error is thrown") \
1858 \
1859 product(uintx, GCTimeLimit, 98, \
1860 "Limit of proportion of time spent in GC before an OutOfMemory" \
1861 "error is thrown (used with GCHeapFreeLimit)") \
1862 \
1863 product(uintx, GCHeapFreeLimit, 2, \
1864 "Minimum percentage of free space after a full GC before an " \
1865 "OutOfMemoryError is thrown (used with GCTimeLimit)") \
1866 \
1867 develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \
1868 "Number of consecutive collections before gc time limit fires") \
1869 \
1870 product(bool, PrintAdaptiveSizePolicy, false, \
1871 "Print information about AdaptiveSizePolicy") \
1872 \
1873 product(intx, PrefetchCopyIntervalInBytes, -1, \
1874 "How far ahead to prefetch destination area (<= 0 means off)") \
1875 \
1876 product(intx, PrefetchScanIntervalInBytes, -1, \
1877 "How far ahead to prefetch scan area (<= 0 means off)") \
1878 \
1879 product(intx, PrefetchFieldsAhead, -1, \
1880 "How many fields ahead to prefetch in oop scan (<= 0 means off)") \
1881 \
1882 develop(bool, UsePrefetchQueue, true, \
1883 "Use the prefetch queue during PS promotion") \
1884 \
1885 diagnostic(bool, VerifyBeforeExit, trueInDebug, \
1886 "Verify system before exiting") \
1887 \
1888 diagnostic(bool, VerifyBeforeGC, false, \
1889 "Verify memory system before GC") \
1890 \
1891 diagnostic(bool, VerifyAfterGC, false, \
1892 "Verify memory system after GC") \
1893 \
1894 diagnostic(bool, VerifyDuringGC, false, \
1895 "Verify memory system during GC (between phases)") \
1896 \
1897 diagnostic(bool, GCParallelVerificationEnabled, true, \
1898 "Enable parallel memory system verification") \
1899 \
1900 diagnostic(bool, VerifyRememberedSets, false, \
1901 "Verify GC remembered sets") \
1902 \
1903 diagnostic(bool, VerifyObjectStartArray, true, \
1904 "Verify GC object start array if verify before/after") \
1905 \
1906 product(bool, DisableExplicitGC, false, \
1907 "Tells whether calling System.gc() does a full GC") \
1908 \
1909 notproduct(bool, CheckMemoryInitialization, false, \
1910 "Checks memory initialization") \
1911 \
1912 product(bool, CollectGen0First, false, \
1913 "Collect youngest generation before each full GC") \
1914 \
1915 diagnostic(bool, BindCMSThreadToCPU, false, \
1916 "Bind CMS Thread to CPU if possible") \
1917 \
1918 diagnostic(uintx, CPUForCMSThread, 0, \
1919 "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \
1920 \
1921 product(bool, BindGCTaskThreadsToCPUs, false, \
1922 "Bind GCTaskThreads to CPUs if possible") \
1923 \
1924 product(bool, UseGCTaskAffinity, false, \
1925 "Use worker affinity when asking for GCTasks") \
1926 \
1927 product(uintx, ProcessDistributionStride, 4, \
1928 "Stride through processors when distributing processes") \
1929 \
1930 product(uintx, CMSCoordinatorYieldSleepCount, 10, \
1931 "number of times the coordinator GC thread will sleep while " \
1932 "yielding before giving up and resuming GC") \
1933 \
1934 product(uintx, CMSYieldSleepCount, 0, \
1935 "number of times a GC thread (minus the coordinator) " \
1936 "will sleep while yielding before giving up and resuming GC") \
1937 \
1938 notproduct(bool, PrintFlagsFinal, false, \
1939 "Print all command line flags after argument processing") \
1940 \
1941 /* gc tracing */ \
1942 manageable(bool, PrintGC, false, \
1943 "Print message at garbage collect") \
1944 \
1945 manageable(bool, PrintGCDetails, false, \
1946 "Print more details at garbage collect") \
1947 \
1948 manageable(bool, PrintGCDateStamps, false, \
1949 "Print date stamps at garbage collect") \
1950 \
1951 manageable(bool, PrintGCTimeStamps, false, \
1952 "Print timestamps at garbage collect") \
1953 \
1954 product(bool, PrintGCTaskTimeStamps, false, \
1955 "Print timestamps for individual gc worker thread tasks") \
1956 \
1957 develop(intx, ConcGCYieldTimeout, 0, \
1958 "If non-zero, assert that GC threads yield within this # of ms.") \
1959 \
1960 notproduct(bool, TraceMarkSweep, false, \
1961 "Trace mark sweep") \
1962 \
1963 product(bool, PrintReferenceGC, false, \
1964 "Print times spent handling reference objects during GC " \
1965 " (enabled only when PrintGCDetails)") \
1966 \
1967 develop(bool, TraceReferenceGC, false, \
1968 "Trace handling of soft/weak/final/phantom references") \
1969 \
1970 develop(bool, TraceFinalizerRegistration, false, \
1971 "Trace registration of final references") \
1972 \
1973 notproduct(bool, TraceScavenge, false, \
1974 "Trace scavenge") \
1975 \
1976 product_rw(bool, TraceClassLoading, false, \
1977 "Trace all classes loaded") \
1978 \
1979 product(bool, TraceClassLoadingPreorder, false, \
1980 "Trace all classes loaded in order referenced (not loaded)") \
1981 \
1982 product_rw(bool, TraceClassUnloading, false, \
1983 "Trace unloading of classes") \
1984 \
1985 product_rw(bool, TraceLoaderConstraints, false, \
1986 "Trace loader constraints") \
1987 \
1988 product(bool, TraceGen0Time, false, \
1989 "Trace accumulated time for Gen 0 collection") \
1990 \
1991 product(bool, TraceGen1Time, false, \
1992 "Trace accumulated time for Gen 1 collection") \
1993 \
1994 product(bool, PrintTenuringDistribution, false, \
1995 "Print tenuring age information") \
1996 \
1997 product_rw(bool, PrintHeapAtGC, false, \
1998 "Print heap layout before and after each GC") \
1999 \
2000 product_rw(bool, PrintHeapAtGCExtended, false, \
2001 "Prints extended information about the layout of the heap " \
2002 "when -XX:+PrintHeapAtGC is set") \
2003 \
2004 product(bool, PrintHeapAtSIGBREAK, true, \
2005 "Print heap layout in response to SIGBREAK") \
2006 \
2007 manageable(bool, PrintClassHistogramBeforeFullGC, false, \
2008 "Print a class histogram before any major stop-world GC") \
2009 \
2010 manageable(bool, PrintClassHistogramAfterFullGC, false, \
2011 "Print a class histogram after any major stop-world GC") \
2012 \
2013 manageable(bool, PrintClassHistogram, false, \
2014 "Print a histogram of class instances") \
2015 \
2016 develop(bool, TraceWorkGang, false, \
2017 "Trace activities of work gangs") \
2018 \
2019 product(bool, TraceParallelOldGCTasks, false, \
2020 "Trace multithreaded GC activity") \
2021 \
2022 develop(bool, TraceBlockOffsetTable, false, \
2023 "Print BlockOffsetTable maps") \
2024 \
2025 develop(bool, TraceCardTableModRefBS, false, \
2026 "Print CardTableModRefBS maps") \
2027 \
2028 develop(bool, TraceGCTaskManager, false, \
2029 "Trace actions of the GC task manager") \
2030 \
2031 develop(bool, TraceGCTaskQueue, false, \
2032 "Trace actions of the GC task queues") \
2033 \
2034 develop(bool, TraceGCTaskThread, false, \
2035 "Trace actions of the GC task threads") \
2036 \
2037 product(bool, PrintParallelOldGCPhaseTimes, false, \
2038 "Print the time taken by each parallel old gc phase." \
2039 "PrintGCDetails must also be enabled.") \
2040 \
2041 develop(bool, TraceParallelOldGCMarkingPhase, false, \
2042 "Trace parallel old gc marking phase") \
2043 \
2044 develop(bool, TraceParallelOldGCSummaryPhase, false, \
2045 "Trace parallel old gc summary phase") \
2046 \
2047 develop(bool, TraceParallelOldGCCompactionPhase, false, \
2048 "Trace parallel old gc compaction phase") \
2049 \
2050 develop(bool, TraceParallelOldGCDensePrefix, false, \
2051 "Trace parallel old gc dense prefix computation") \
2052 \
2053 develop(bool, IgnoreLibthreadGPFault, false, \
2054 "Suppress workaround for libthread GP fault") \
2055 \
2056 product(bool, PrintJNIGCStalls, false, \
2057 "Print diagnostic message when GC is stalled" \
2058 "by JNI critical section") \
2059 \
2060 /* JVMTI heap profiling */ \
2061 \
2062 diagnostic(bool, TraceJVMTIObjectTagging, false, \
2063 "Trace JVMTI object tagging calls") \
2064 \
2065 diagnostic(bool, VerifyBeforeIteration, false, \
2066 "Verify memory system before JVMTI iteration") \
2067 \
2068 /* compiler interface */ \
2069 \
2070 develop(bool, CIPrintCompilerName, false, \
2071 "when CIPrint is active, print the name of the active compiler") \
2072 \
2073 develop(bool, CIPrintCompileQueue, false, \
2074 "display the contents of the compile queue whenever a " \
2075 "compilation is enqueued") \
2076 \
2077 develop(bool, CIPrintRequests, false, \
2078 "display every request for compilation") \
2079 \
2080 product(bool, CITime, false, \
2081 "collect timing information for compilation") \
2082 \
2083 develop(bool, CITimeEach, false, \
2084 "display timing information after each successful compilation") \
2085 \
2086 develop(bool, CICountOSR, true, \
2087 "use a separate counter when assigning ids to osr compilations") \
2088 \
2089 develop(bool, CICompileNatives, true, \
2090 "compile native methods if supported by the compiler") \
2091 \
2092 develop_pd(bool, CICompileOSR, \
2093 "compile on stack replacement methods if supported by the " \
2094 "compiler") \
2095 \
2096 develop(bool, CIPrintMethodCodes, false, \
2097 "print method bytecodes of the compiled code") \
2098 \
2099 develop(bool, CIPrintTypeFlow, false, \
2100 "print the results of ciTypeFlow analysis") \
2101 \
2102 develop(bool, CITraceTypeFlow, false, \
2103 "detailed per-bytecode tracing of ciTypeFlow analysis") \
2104 \
2105 develop(intx, CICloneLoopTestLimit, 100, \
2106 "size limit for blocks heuristically cloned in ciTypeFlow") \
2107 \
2108 /* temp diagnostics */ \
2109 \
2110 diagnostic(bool, TraceRedundantCompiles, false, \
2111 "Have compile broker print when a request already in the queue is"\
2112 " requested again") \
2113 \
2114 diagnostic(bool, InitialCompileFast, false, \
2115 "Initial compile at CompLevel_fast_compile") \
2116 \
2117 diagnostic(bool, InitialCompileReallyFast, false, \
2118 "Initial compile at CompLevel_really_fast_compile (no profile)") \
2119 \
2120 diagnostic(bool, FullProfileOnReInterpret, true, \
2121 "On re-interpret unc-trap compile next at CompLevel_fast_compile")\
2122 \
2123 /* compiler */ \
2124 \
2125 product(intx, CICompilerCount, CI_COMPILER_COUNT, \
2126 "Number of compiler threads to run") \
2127 \
2128 product(intx, CompilationPolicyChoice, 0, \
2129 "which compilation policy (0/1)") \
2130 \
2131 develop(bool, UseStackBanging, true, \
2132 "use stack banging for stack overflow checks (required for " \
2133 "proper StackOverflow handling; disable only to measure cost " \
2134 "of stackbanging)") \
2135 \
2136 develop(bool, Use24BitFPMode, true, \
2137 "Set 24-bit FPU mode on a per-compile basis ") \
2138 \
2139 develop(bool, Use24BitFP, true, \
2140 "use FP instructions that produce 24-bit precise results") \
2141 \
2142 develop(bool, UseStrictFP, true, \
2143 "use strict fp if modifier strictfp is set") \
2144 \
2145 develop(bool, GenerateSynchronizationCode, true, \
2146 "generate locking/unlocking code for synchronized methods and " \
2147 "monitors") \
2148 \
2149 develop(bool, GenerateCompilerNullChecks, true, \
2150 "Generate explicit null checks for loads/stores/calls") \
2151 \
2152 develop(bool, GenerateRangeChecks, true, \
2153 "Generate range checks for array accesses") \
2154 \
2155 develop_pd(bool, ImplicitNullChecks, \
2156 "generate code for implicit null checks") \
2157 \
2158 product(bool, PrintSafepointStatistics, false, \
2159 "print statistics about safepoint synchronization") \
2160 \
2161 product(intx, PrintSafepointStatisticsCount, 300, \
2162 "total number of safepoint statistics collected " \
2163 "before printing them out") \
2164 \
2165 product(intx, PrintSafepointStatisticsTimeout, -1, \
2166 "print safepoint statistics only when safepoint takes" \
2167 " more than PrintSafepointSatisticsTimeout in millis") \
2168 \
2169 develop(bool, InlineAccessors, true, \
2170 "inline accessor methods (get/set)") \
2171 \
2172 product(bool, Inline, true, \
2173 "enable inlining") \
2174 \
2175 product(bool, ClipInlining, true, \
2176 "clip inlining if aggregate method exceeds DesiredMethodLimit") \
2177 \
2178 develop(bool, UseCHA, true, \
2179 "enable CHA") \
2180 \
2181 product(bool, UseTypeProfile, true, \
2182 "Check interpreter profile for historically monomorphic calls") \
2183 \
2184 product(intx, TypeProfileMajorReceiverPercent, 90, \
2185 "% of major receiver type to all profiled receivers") \
2186 \
2187 notproduct(bool, TimeCompiler, false, \
2188 "time the compiler") \
2189 \
2190 notproduct(bool, TimeCompiler2, false, \
2191 "detailed time the compiler (requires +TimeCompiler)") \
2192 \
2193 diagnostic(bool, PrintInlining, false, \
2194 "prints inlining optimizations") \
2195 \
2196 diagnostic(bool, PrintIntrinsics, false, \
2197 "prints attempted and successful inlining of intrinsics") \
2198 \
2199 product(bool, UseCountLeadingZerosInstruction, false, \
2200 "Use count leading zeros instruction") \
2201 \
2202 product(bool, UsePopCountInstruction, false, \
2203 "Use population count instruction") \
2204 \
2205 diagnostic(ccstrlist, DisableIntrinsic, "", \
2206 "do not expand intrinsics whose (internal) names appear here") \
2207 \
2208 develop(bool, StressReflectiveCode, false, \
2209 "Use inexact types at allocations, etc., to test reflection") \
2210 \
2211 develop(bool, EagerInitialization, false, \
2212 "Eagerly initialize classes if possible") \
2213 \
2214 product(bool, Tier1UpdateMethodData, trueInTiered, \
2215 "Update methodDataOops in Tier1-generated code") \
2216 \
2217 develop(bool, TraceMethodReplacement, false, \
2218 "Print when methods are replaced do to recompilation") \
2219 \
2220 develop(bool, PrintMethodFlushing, false, \
2221 "print the nmethods being flushed") \
2222 \
2223 notproduct(bool, LogMultipleMutexLocking, false, \
2224 "log locking and unlocking of mutexes (only if multiple locks " \
2225 "are held)") \
2226 \
2227 develop(bool, UseRelocIndex, false, \
2228 "use an index to speed random access to relocations") \
2229 \
2230 develop(bool, StressCodeBuffers, false, \
2231 "Exercise code buffer expansion and other rare state changes") \
2232 \
2233 diagnostic(bool, DebugNonSafepoints, trueInDebug, \
2234 "Generate extra debugging info for non-safepoints in nmethods") \
2235 \
2236 diagnostic(bool, DebugInlinedCalls, true, \
2237 "If false, restricts profiled locations to the root method only") \
2238 \
2239 product(bool, PrintVMOptions, trueInDebug, \
2240 "print VM flag settings") \
2241 \
2242 product(bool, IgnoreUnrecognizedVMOptions, false, \
2243 "Ignore unrecognized VM options") \
2244 \
2245 diagnostic(bool, SerializeVMOutput, true, \
2246 "Use a mutex to serialize output to tty and hotspot.log") \
2247 \
2248 diagnostic(bool, DisplayVMOutput, true, \
2249 "Display all VM output on the tty, independently of LogVMOutput") \
2250 \
2251 diagnostic(bool, LogVMOutput, trueInDebug, \
2252 "Save VM output to hotspot.log, or to LogFile") \
2253 \
2254 diagnostic(ccstr, LogFile, NULL, \
2255 "If LogVMOutput is on, save VM output to this file [hotspot.log]") \
2256 \
2257 product(ccstr, ErrorFile, NULL, \
2258 "If an error occurs, save the error data to this file " \
2259 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \
2260 \
2261 product(bool, DisplayVMOutputToStderr, false, \
2262 "If DisplayVMOutput is true, display all VM output to stderr") \
2263 \
2264 product(bool, DisplayVMOutputToStdout, false, \
2265 "If DisplayVMOutput is true, display all VM output to stdout") \
2266 \
2267 product(bool, UseHeavyMonitors, false, \
2268 "use heavyweight instead of lightweight Java monitors") \
2269 \
2270 notproduct(bool, PrintSymbolTableSizeHistogram, false, \
2271 "print histogram of the symbol table") \
2272 \
2273 notproduct(bool, ExitVMOnVerifyError, false, \
2274 "standard exit from VM if bytecode verify error " \
2275 "(only in debug mode)") \
2276 \
2277 notproduct(ccstr, AbortVMOnException, NULL, \
2278 "Call fatal if this exception is thrown. Example: " \
2279 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \
2280 \
2281 develop(bool, DebugVtables, false, \
2282 "add debugging code to vtable dispatch") \
2283 \
2284 develop(bool, PrintVtables, false, \
2285 "print vtables when printing klass") \
2286 \
2287 notproduct(bool, PrintVtableStats, false, \
2288 "print vtables stats at end of run") \
2289 \
2290 develop(bool, TraceCreateZombies, false, \
2291 "trace creation of zombie nmethods") \
2292 \
2293 notproduct(bool, IgnoreLockingAssertions, false, \
2294 "disable locking assertions (for speed)") \
2295 \
2296 notproduct(bool, VerifyLoopOptimizations, false, \
2297 "verify major loop optimizations") \
2298 \
2299 product(bool, RangeCheckElimination, true, \
2300 "Split loop iterations to eliminate range checks") \
2301 \
2302 develop_pd(bool, UncommonNullCast, \
2303 "track occurrences of null in casts; adjust compiler tactics") \
2304 \
2305 develop(bool, TypeProfileCasts, true, \
2306 "treat casts like calls for purposes of type profiling") \
2307 \
2308 develop(bool, MonomorphicArrayCheck, true, \
2309 "Uncommon-trap array store checks that require full type check") \
2310 \
2311 develop(bool, DelayCompilationDuringStartup, true, \
2312 "Delay invoking the compiler until main application class is " \
2313 "loaded") \
2314 \
2315 develop(bool, CompileTheWorld, false, \
2316 "Compile all methods in all classes in bootstrap class path " \
2317 "(stress test)") \
2318 \
2319 develop(bool, CompileTheWorldPreloadClasses, true, \
2320 "Preload all classes used by a class before start loading") \
2321 \
2322 notproduct(bool, CompileTheWorldIgnoreInitErrors, false, \
2323 "Compile all methods although class initializer failed") \
2324 \
2325 develop(bool, TraceIterativeGVN, false, \
2326 "Print progress during Iterative Global Value Numbering") \
2327 \
2328 develop(bool, FillDelaySlots, true, \
2329 "Fill delay slots (on SPARC only)") \
2330 \
2331 develop(bool, VerifyIterativeGVN, false, \
2332 "Verify Def-Use modifications during sparse Iterative Global " \
2333 "Value Numbering") \
2334 \
2335 notproduct(bool, TracePhaseCCP, false, \
2336 "Print progress during Conditional Constant Propagation") \
2337 \
2338 develop(bool, TimeLivenessAnalysis, false, \
2339 "Time computation of bytecode liveness analysis") \
2340 \
2341 develop(bool, TraceLivenessGen, false, \
2342 "Trace the generation of liveness analysis information") \
2343 \
2344 notproduct(bool, TraceLivenessQuery, false, \
2345 "Trace queries of liveness analysis information") \
2346 \
2347 notproduct(bool, CollectIndexSetStatistics, false, \
2348 "Collect information about IndexSets") \
2349 \
2350 develop(bool, PrintDominators, false, \
2351 "Print out dominator trees for GVN") \
2352 \
2353 develop(bool, UseLoopSafepoints, true, \
2354 "Generate Safepoint nodes in every loop") \
2355 \
2356 notproduct(bool, TraceCISCSpill, false, \
2357 "Trace allocators use of cisc spillable instructions") \
2358 \
2359 notproduct(bool, TraceSpilling, false, \
2360 "Trace spilling") \
2361 \
2362 develop(bool, DeutschShiffmanExceptions, true, \
2363 "Fast check to find exception handler for precisely typed " \
2364 "exceptions") \
2365 \
2366 product(bool, SplitIfBlocks, true, \
2367 "Clone compares and control flow through merge points to fold " \
2368 "some branches") \
2369 \
2370 develop(intx, FastAllocateSizeLimit, 128*K, \
2371 /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \
2372 "Inline allocations larger than this in doublewords must go slow")\
2373 \
2374 product(bool, AggressiveOpts, false, \
2375 "Enable aggressive optimizations - see arguments.cpp") \
2376 \
2377 product(bool, UseStringCache, false, \
2378 "Enable String cache capabilities on String.java") \
2379 \
2380 /* statistics */ \
2381 develop(bool, UseVTune, false, \
2382 "enable support for Intel's VTune profiler") \
2383 \
2384 develop(bool, CountCompiledCalls, false, \
2385 "counts method invocations") \
2386 \
2387 notproduct(bool, CountRuntimeCalls, false, \
2388 "counts VM runtime calls") \
2389 \
2390 develop(bool, CountJNICalls, false, \
2391 "counts jni method invocations") \
2392 \
2393 notproduct(bool, CountJVMCalls, false, \
2394 "counts jvm method invocations") \
2395 \
2396 notproduct(bool, CountRemovableExceptions, false, \
2397 "count exceptions that could be replaced by branches due to " \
2398 "inlining") \
2399 \
2400 notproduct(bool, ICMissHistogram, false, \
2401 "produce histogram of IC misses") \
2402 \
2403 notproduct(bool, PrintClassStatistics, false, \
2404 "prints class statistics at end of run") \
2405 \
2406 notproduct(bool, PrintMethodStatistics, false, \
2407 "prints method statistics at end of run") \
2408 \
2409 /* interpreter */ \
2410 develop(bool, ClearInterpreterLocals, false, \
2411 "Always clear local variables of interpreter activations upon " \
2412 "entry") \
2413 \
2414 product_pd(bool, RewriteBytecodes, \
2415 "Allow rewriting of bytecodes (bytecodes are not immutable)") \
2416 \
2417 product_pd(bool, RewriteFrequentPairs, \
2418 "Rewrite frequently used bytecode pairs into a single bytecode") \
2419 \
2420 diagnostic(bool, PrintInterpreter, false, \
2421 "Prints the generated interpreter code") \
2422 \
2423 product(bool, UseInterpreter, true, \
2424 "Use interpreter for non-compiled methods") \
2425 \
2426 develop(bool, UseFastSignatureHandlers, true, \
2427 "Use fast signature handlers for native calls") \
2428 \
2429 develop(bool, UseV8InstrsOnly, false, \
2430 "Use SPARC-V8 Compliant instruction subset") \
2431 \
2432 product(bool, UseNiagaraInstrs, false, \
2433 "Use Niagara-efficient instruction subset") \
2434 \
2435 develop(bool, UseCASForSwap, false, \
2436 "Do not use swap instructions, but only CAS (in a loop) on SPARC")\
2437 \
2438 product(bool, UseLoopCounter, true, \
2439 "Increment invocation counter on backward branch") \
2440 \
2441 product(bool, UseFastEmptyMethods, true, \
2442 "Use fast method entry code for empty methods") \
2443 \
2444 product(bool, UseFastAccessorMethods, true, \
2445 "Use fast method entry code for accessor methods") \
2446 \
2447 product_pd(bool, UseOnStackReplacement, \
2448 "Use on stack replacement, calls runtime if invoc. counter " \
2449 "overflows in loop") \
2450 \
2451 notproduct(bool, TraceOnStackReplacement, false, \
2452 "Trace on stack replacement") \
2453 \
2454 develop(bool, PoisonOSREntry, true, \
2455 "Detect abnormal calls to OSR code") \
2456 \
2457 product_pd(bool, PreferInterpreterNativeStubs, \
2458 "Use always interpreter stubs for native methods invoked via " \
2459 "interpreter") \
2460 \
2461 develop(bool, CountBytecodes, false, \
2462 "Count number of bytecodes executed") \
2463 \
2464 develop(bool, PrintBytecodeHistogram, false, \
2465 "Print histogram of the executed bytecodes") \
2466 \
2467 develop(bool, PrintBytecodePairHistogram, false, \
2468 "Print histogram of the executed bytecode pairs") \
2469 \
2470 diagnostic(bool, PrintSignatureHandlers, false, \
2471 "Print code generated for native method signature handlers") \
2472 \
2473 develop(bool, VerifyOops, false, \
2474 "Do plausibility checks for oops") \
2475 \
2476 develop(bool, CheckUnhandledOops, false, \
2477 "Check for unhandled oops in VM code") \
2478 \
2479 develop(bool, VerifyJNIFields, trueInDebug, \
2480 "Verify jfieldIDs for instance fields") \
2481 \
2482 notproduct(bool, VerifyJNIEnvThread, false, \
2483 "Verify JNIEnv.thread == Thread::current() when entering VM " \
2484 "from JNI") \
2485 \
2486 develop(bool, VerifyFPU, false, \
2487 "Verify FPU state (check for NaN's, etc.)") \
2488 \
2489 develop(bool, VerifyThread, false, \
2490 "Watch the thread register for corruption (SPARC only)") \
2491 \
2492 develop(bool, VerifyActivationFrameSize, false, \
2493 "Verify that activation frame didn't become smaller than its " \
2494 "minimal size") \
2495 \
2496 develop(bool, TraceFrequencyInlining, false, \
2497 "Trace frequency based inlining") \
2498 \
2499 notproduct(bool, TraceTypeProfile, false, \
2500 "Trace type profile") \
2501 \
2502 develop_pd(bool, InlineIntrinsics, \
2503 "Inline intrinsics that can be statically resolved") \
2504 \
2505 product_pd(bool, ProfileInterpreter, \
2506 "Profile at the bytecode level during interpretation") \
2507 \
2508 develop_pd(bool, ProfileTraps, \
2509 "Profile deoptimization traps at the bytecode level") \
2510 \
2511 product(intx, ProfileMaturityPercentage, 20, \
2512 "number of method invocations/branches (expressed as % of " \
2513 "CompileThreshold) before using the method's profile") \
2514 \
2515 develop(bool, PrintMethodData, false, \
2516 "Print the results of +ProfileInterpreter at end of run") \
2517 \
2518 develop(bool, VerifyDataPointer, trueInDebug, \
2519 "Verify the method data pointer during interpreter profiling") \
2520 \
2521 develop(bool, VerifyCompiledCode, false, \
2522 "Include miscellaneous runtime verifications in nmethod code; " \
2523 "off by default because it disturbs nmethod size heuristics.") \
2524 \
2525 \
2526 /* compilation */ \
2527 product(bool, UseCompiler, true, \
2528 "use compilation") \
2529 \
2530 develop(bool, TraceCompilationPolicy, false, \
2531 "Trace compilation policy") \
2532 \
2533 develop(bool, TimeCompilationPolicy, false, \
2534 "Time the compilation policy") \
2535 \
2536 product(bool, UseCounterDecay, true, \
2537 "adjust recompilation counters") \
2538 \
2539 develop(intx, CounterHalfLifeTime, 30, \
2540 "half-life time of invocation counters (in secs)") \
2541 \
2542 develop(intx, CounterDecayMinIntervalLength, 500, \
2543 "Min. ms. between invocation of CounterDecay") \
2544 \
2545 product(bool, AlwaysCompileLoopMethods, false, \
2546 "when using recompilation, never interpret methods " \
2547 "containing loops") \
2548 \
2549 product(bool, DontCompileHugeMethods, true, \
2550 "don't compile methods > HugeMethodLimit") \
2551 \
2552 /* Bytecode escape analysis estimation. */ \
2553 product(bool, EstimateArgEscape, true, \
2554 "Analyze bytecodes to estimate escape state of arguments") \
2555 \
2556 product(intx, BCEATraceLevel, 0, \
2557 "How much tracing to do of bytecode escape analysis estimates") \
2558 \
2559 product(intx, MaxBCEAEstimateLevel, 5, \
2560 "Maximum number of nested calls that are analyzed by BC EA.") \
2561 \
2562 product(intx, MaxBCEAEstimateSize, 150, \
2563 "Maximum bytecode size of a method to be analyzed by BC EA.") \
2564 \
2565 product(intx, AllocatePrefetchStyle, 1, \
2566 "0 = no prefetch, " \
2567 "1 = prefetch instructions for each allocation, " \
2568 "2 = use TLAB watermark to gate allocation prefetch") \
2569 \
2570 product(intx, AllocatePrefetchDistance, -1, \
2571 "Distance to prefetch ahead of allocation pointer") \
2572 \
2573 product(intx, AllocatePrefetchLines, 1, \
2574 "Number of lines to prefetch ahead of allocation pointer") \
2575 \
2576 product(intx, AllocatePrefetchStepSize, 16, \
2577 "Step size in bytes of sequential prefetch instructions") \
2578 \
2579 product(intx, AllocatePrefetchInstr, 0, \
2580 "Prefetch instruction to prefetch ahead of allocation pointer") \
2581 \
2582 product(intx, ReadPrefetchInstr, 0, \
2583 "Prefetch instruction to prefetch ahead") \
2584 \
2585 /* deoptimization */ \
2586 develop(bool, TraceDeoptimization, false, \
2587 "Trace deoptimization") \
2588 \
2589 develop(bool, DebugDeoptimization, false, \
2590 "Tracing various information while debugging deoptimization") \
2591 \
2592 product(intx, SelfDestructTimer, 0, \
2593 "Will cause VM to terminate after a given time (in minutes) " \
2594 "(0 means off)") \
2595 \
2596 product(intx, MaxJavaStackTraceDepth, 1024, \
2597 "Max. no. of lines in the stack trace for Java exceptions " \
2598 "(0 means all)") \
2599 \
2600 develop(intx, GuaranteedSafepointInterval, 1000, \
2601 "Guarantee a safepoint (at least) every so many milliseconds " \
2602 "(0 means none)") \
2603 \
2604 product(intx, SafepointTimeoutDelay, 10000, \
2605 "Delay in milliseconds for option SafepointTimeout") \
2606 \
2607 product(intx, NmethodSweepFraction, 4, \
2608 "Number of invocations of sweeper to cover all nmethods") \
2609 \
2610 notproduct(intx, MemProfilingInterval, 500, \
2611 "Time between each invocation of the MemProfiler") \
2612 \
2613 develop(intx, MallocCatchPtr, -1, \
2614 "Hit breakpoint when mallocing/freeing this pointer") \
2615 \
2616 notproduct(intx, AssertRepeat, 1, \
2617 "number of times to evaluate expression in assert " \
2618 "(to estimate overhead); only works with -DUSE_REPEATED_ASSERTS") \
2619 \
2620 notproduct(ccstrlist, SuppressErrorAt, "", \
2621 "List of assertions (file:line) to muzzle") \
2622 \
2623 notproduct(uintx, HandleAllocationLimit, 1024, \
2624 "Threshold for HandleMark allocation when +TraceHandleAllocation "\
2625 "is used") \
2626 \
2627 develop(uintx, TotalHandleAllocationLimit, 1024, \
2628 "Threshold for total handle allocation when " \
2629 "+TraceHandleAllocation is used") \
2630 \
2631 develop(intx, StackPrintLimit, 100, \
2632 "number of stack frames to print in VM-level stack dump") \
2633 \
2634 notproduct(intx, MaxElementPrintSize, 256, \
2635 "maximum number of elements to print") \
2636 \
2637 notproduct(intx, MaxSubklassPrintSize, 4, \
2638 "maximum number of subklasses to print when printing klass") \
2639 \
2640 develop(intx, MaxInlineLevel, 9, \
2641 "maximum number of nested calls that are inlined") \
2642 \
2643 develop(intx, MaxRecursiveInlineLevel, 1, \
2644 "maximum number of nested recursive calls that are inlined") \
2645 \
2646 product_pd(intx, InlineSmallCode, \
2647 "Only inline already compiled methods if their code size is " \
2648 "less than this") \
2649 \
2650 product(intx, MaxInlineSize, 35, \
2651 "maximum bytecode size of a method to be inlined") \
2652 \
2653 product_pd(intx, FreqInlineSize, \
2654 "maximum bytecode size of a frequent method to be inlined") \
2655 \
2656 develop(intx, MaxTrivialSize, 6, \
2657 "maximum bytecode size of a trivial method to be inlined") \
2658 \
2659 develop(intx, MinInliningThreshold, 250, \
2660 "min. invocation count a method needs to have to be inlined") \
2661 \
2662 develop(intx, AlignEntryCode, 4, \
2663 "aligns entry code to specified value (in bytes)") \
2664 \
2665 develop(intx, MethodHistogramCutoff, 100, \
2666 "cutoff value for method invoc. histogram (+CountCalls)") \
2667 \
2668 develop(intx, ProfilerNumberOfInterpretedMethods, 25, \
2669 "# of interpreted methods to show in profile") \
2670 \
2671 develop(intx, ProfilerNumberOfCompiledMethods, 25, \
2672 "# of compiled methods to show in profile") \
2673 \
2674 develop(intx, ProfilerNumberOfStubMethods, 25, \
2675 "# of stub methods to show in profile") \
2676 \
2677 develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \
2678 "# of runtime stub nodes to show in profile") \
2679 \
2680 product(intx, ProfileIntervalsTicks, 100, \
2681 "# of ticks between printing of interval profile " \
2682 "(+ProfileIntervals)") \
2683 \
2684 notproduct(intx, ScavengeALotInterval, 1, \
2685 "Interval between which scavenge will occur with +ScavengeALot") \
2686 \
2687 notproduct(intx, FullGCALotInterval, 1, \
2688 "Interval between which full gc will occur with +FullGCALot") \
2689 \
2690 notproduct(intx, FullGCALotStart, 0, \
2691 "For which invocation to start FullGCAlot") \
2692 \
2693 notproduct(intx, FullGCALotDummies, 32*K, \
2694 "Dummy object allocated with +FullGCALot, forcing all objects " \
2695 "to move") \
2696 \
2697 develop(intx, DontYieldALotInterval, 10, \
2698 "Interval between which yields will be dropped (milliseconds)") \
2699 \
2700 develop(intx, MinSleepInterval, 1, \
2701 "Minimum sleep() interval (milliseconds) when " \
2702 "ConvertSleepToYield is off (used for SOLARIS)") \
2703 \
2704 product(intx, EventLogLength, 2000, \
2705 "maximum nof events in event log") \
2706 \
2707 develop(intx, ProfilerPCTickThreshold, 15, \
2708 "Number of ticks in a PC buckets to be a hotspot") \
2709 \
2710 notproduct(intx, DeoptimizeALotInterval, 5, \
2711 "Number of exits until DeoptimizeALot kicks in") \
2712 \
2713 notproduct(intx, ZombieALotInterval, 5, \
2714 "Number of exits until ZombieALot kicks in") \
2715 \
2716 develop(bool, StressNonEntrant, false, \
2717 "Mark nmethods non-entrant at registration") \
2718 \
2719 diagnostic(intx, MallocVerifyInterval, 0, \
2720 "if non-zero, verify C heap after every N calls to " \
2721 "malloc/realloc/free") \
2722 \
2723 diagnostic(intx, MallocVerifyStart, 0, \
2724 "if non-zero, start verifying C heap after Nth call to " \
2725 "malloc/realloc/free") \
2726 \
2727 product(intx, TypeProfileWidth, 2, \
2728 "number of receiver types to record in call/cast profile") \
2729 \
2730 develop(intx, BciProfileWidth, 2, \
2731 "number of return bci's to record in ret profile") \
2732 \
2733 product(intx, PerMethodRecompilationCutoff, 400, \
2734 "After recompiling N times, stay in the interpreter (-1=>'Inf')") \
2735 \
2736 product(intx, PerBytecodeRecompilationCutoff, 100, \
2737 "Per-BCI limit on repeated recompilation (-1=>'Inf')") \
2738 \
2739 product(intx, PerMethodTrapLimit, 100, \
2740 "Limit on traps (of one kind) in a method (includes inlines)") \
2741 \
2742 product(intx, PerBytecodeTrapLimit, 4, \
2743 "Limit on traps (of one kind) at a particular BCI") \
2744 \
2745 develop(intx, FreqCountInvocations, 1, \
2746 "Scaling factor for branch frequencies (deprecated)") \
2747 \
2748 develop(intx, InlineFrequencyRatio, 20, \
2749 "Ratio of call site execution to caller method invocation") \
2750 \
2751 develop_pd(intx, InlineFrequencyCount, \
2752 "Count of call site execution necessary to trigger frequent " \
2753 "inlining") \
2754 \
2755 develop(intx, InlineThrowCount, 50, \
2756 "Force inlining of interpreted methods that throw this often") \
2757 \
2758 develop(intx, InlineThrowMaxSize, 200, \
2759 "Force inlining of throwing methods smaller than this") \
2760 \
2761 product(intx, AliasLevel, 3, \
2762 "0 for no aliasing, 1 for oop/field/static/array split, " \
2763 "2 for class split, 3 for unique instances") \
2764 \
2765 develop(bool, VerifyAliases, false, \
2766 "perform extra checks on the results of alias analysis") \
2767 \
2768 develop(intx, ProfilerNodeSize, 1024, \
2769 "Size in K to allocate for the Profile Nodes of each thread") \
2770 \
2771 develop(intx, V8AtomicOperationUnderLockSpinCount, 50, \
2772 "Number of times to spin wait on a v8 atomic operation lock") \
2773 \
2774 product(intx, ReadSpinIterations, 100, \
2775 "Number of read attempts before a yield (spin inner loop)") \
2776 \
2777 product_pd(intx, PreInflateSpin, \
2778 "Number of times to spin wait before inflation") \
2779 \
2780 product(intx, PreBlockSpin, 10, \
2781 "Number of times to spin in an inflated lock before going to " \
2782 "an OS lock") \
2783 \
2784 /* gc parameters */ \
2785 product(uintx, MaxHeapSize, ScaleForWordSize(64*M), \
2786 "Default maximum size for object heap (in bytes)") \
2787 \
2788 product_pd(uintx, NewSize, \
2789 "Default size of new generation (in bytes)") \
2790 \
2791 product(uintx, MaxNewSize, max_uintx, \
2792 "Maximum size of new generation (in bytes)") \
2793 \
2794 product(uintx, PretenureSizeThreshold, 0, \
2795 "Max size in bytes of objects allocated in DefNew generation") \
2796 \
2797 product_pd(uintx, TLABSize, \
2798 "Default (or starting) size of TLAB (in bytes)") \
2799 \
2800 product(uintx, MinTLABSize, 2*K, \
2801 "Minimum allowed TLAB size (in bytes)") \
2802 \
2803 product(uintx, TLABAllocationWeight, 35, \
2804 "Allocation averaging weight") \
2805 \
2806 product(uintx, TLABWasteTargetPercent, 1, \
2807 "Percentage of Eden that can be wasted") \
2808 \
2809 product(uintx, TLABRefillWasteFraction, 64, \
2810 "Max TLAB waste at a refill (internal fragmentation)") \
2811 \
2812 product(uintx, TLABWasteIncrement, 4, \
2813 "Increment allowed waste at slow allocation") \
2814 \
2815 product_pd(intx, SurvivorRatio, \
2816 "Ratio of eden/survivor space size") \
2817 \
2818 product_pd(intx, NewRatio, \
2819 "Ratio of new/old generation sizes") \
2820 \
2821 product(uintx, MaxLiveObjectEvacuationRatio, 100, \
2822 "Max percent of eden objects that will be live at scavenge") \
2823 \
2824 product_pd(uintx, NewSizeThreadIncrease, \
2825 "Additional size added to desired new generation size per " \
2826 "non-daemon thread (in bytes)") \
2827 \
2828 product(uintx, OldSize, ScaleForWordSize(4096*K), \
2829 "Default size of tenured generation (in bytes)") \
2830 \
2831 product_pd(uintx, PermSize, \
2832 "Default size of permanent generation (in bytes)") \
2833 \
2834 product_pd(uintx, MaxPermSize, \
2835 "Maximum size of permanent generation (in bytes)") \
2836 \
2837 product(uintx, MinHeapFreeRatio, 40, \
2838 "Min percentage of heap free after GC to avoid expansion") \
2839 \
2840 product(uintx, MaxHeapFreeRatio, 70, \
2841 "Max percentage of heap free after GC to avoid shrinking") \
2842 \
2843 product(intx, SoftRefLRUPolicyMSPerMB, 1000, \
2844 "Number of milliseconds per MB of free space in the heap") \
2845 \
2846 product(uintx, MinHeapDeltaBytes, ScaleForWordSize(128*K), \
2847 "Min change in heap space due to GC (in bytes)") \
2848 \
2849 product(uintx, MinPermHeapExpansion, ScaleForWordSize(256*K), \
2850 "Min expansion of permanent heap (in bytes)") \
2851 \
2852 product(uintx, MaxPermHeapExpansion, ScaleForWordSize(4*M), \
2853 "Max expansion of permanent heap without full GC (in bytes)") \
2854 \
2855 product(intx, QueuedAllocationWarningCount, 0, \
2856 "Number of times an allocation that queues behind a GC " \
2857 "will retry before printing a warning") \
2858 \
2859 diagnostic(uintx, VerifyGCStartAt, 0, \
2860 "GC invoke count where +VerifyBefore/AfterGC kicks in") \
2861 \
2862 diagnostic(intx, VerifyGCLevel, 0, \
2863 "Generation level at which to start +VerifyBefore/AfterGC") \
2864 \
2865 develop(uintx, ExitAfterGCNum, 0, \
2866 "If non-zero, exit after this GC.") \
2867 \
2868 product(intx, MaxTenuringThreshold, 15, \
2869 "Maximum value for tenuring threshold") \
2870 \
2871 product(intx, InitialTenuringThreshold, 7, \
2872 "Initial value for tenuring threshold") \
2873 \
2874 product(intx, TargetSurvivorRatio, 50, \
2875 "Desired percentage of survivor space used after scavenge") \
2876 \
2877 product(uintx, MarkSweepDeadRatio, 5, \
2878 "Percentage (0-100) of the old gen allowed as dead wood." \
2879 "Serial mark sweep treats this as both the min and max value." \
2880 "CMS uses this value only if it falls back to mark sweep." \
2881 "Par compact uses a variable scale based on the density of the" \
2882 "generation and treats this as the max value when the heap is" \
2883 "either completely full or completely empty. Par compact also" \
2884 "has a smaller default value; see arguments.cpp.") \
2885 \
2886 product(uintx, PermMarkSweepDeadRatio, 20, \
2887 "Percentage (0-100) of the perm gen allowed as dead wood." \
2888 "See MarkSweepDeadRatio for collector-specific comments.") \
2889 \
2890 product(intx, MarkSweepAlwaysCompactCount, 4, \
2891 "How often should we fully compact the heap (ignoring the dead " \
2892 "space parameters)") \
2893 \
2894 product(intx, PrintCMSStatistics, 0, \
2895 "Statistics for CMS") \
2896 \
2897 product(bool, PrintCMSInitiationStatistics, false, \
2898 "Statistics for initiating a CMS collection") \
2899 \
2900 product(intx, PrintFLSStatistics, 0, \
2901 "Statistics for CMS' FreeListSpace") \
2902 \
2903 product(intx, PrintFLSCensus, 0, \
2904 "Census for CMS' FreeListSpace") \
2905 \
2906 develop(uintx, GCExpandToAllocateDelayMillis, 0, \
2907 "Delay in ms between expansion and allocation") \
2908 \
2909 product(intx, DeferThrSuspendLoopCount, 4000, \
2910 "(Unstable) Number of times to iterate in safepoint loop " \
2911 " before blocking VM threads ") \
2912 \
2913 product(intx, DeferPollingPageLoopCount, -1, \
2914 "(Unsafe,Unstable) Number of iterations in safepoint loop " \
2915 "before changing safepoint polling page to RO ") \
2916 \
2917 product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \
2918 \
2919 product(bool, UseDepthFirstScavengeOrder, true, \
2920 "true: the scavenge order will be depth-first, " \
2921 "false: the scavenge order will be breadth-first") \
2922 \
2923 product(bool, PSChunkLargeArrays, true, \
2924 "true: process large arrays in chunks") \
2925 \
2926 product(uintx, GCDrainStackTargetSize, 64, \
2927 "how many entries we'll try to leave on the stack during " \
2928 "parallel GC") \
2929 \
2930 product(intx, DCQBarrierQueueBufferSize, 256, \
2931 "Number of elements in a dirty card queue buffer") \
2932 \
2933 product(intx, DCQBarrierProcessCompletedThreshold, 5, \
2934 "Number of completed dirty card buffers to trigger processing.") \
2935 \
2936 /* stack parameters */ \
2937 product_pd(intx, StackYellowPages, \
2938 "Number of yellow zone (recoverable overflows) pages") \
2939 \
2940 product_pd(intx, StackRedPages, \
2941 "Number of red zone (unrecoverable overflows) pages") \
2942 \
2943 product_pd(intx, StackShadowPages, \
2944 "Number of shadow zone (for overflow checking) pages" \
2945 " this should exceed the depth of the VM and native call stack") \
2946 \
2947 product_pd(intx, ThreadStackSize, \
2948 "Thread Stack Size (in Kbytes)") \
2949 \
2950 product_pd(intx, VMThreadStackSize, \
2951 "Non-Java Thread Stack Size (in Kbytes)") \
2952 \
2953 product_pd(intx, CompilerThreadStackSize, \
2954 "Compiler Thread Stack Size (in Kbytes)") \
2955 \
2956 develop_pd(uintx, JVMInvokeMethodSlack, \
2957 "Stack space (bytes) required for JVM_InvokeMethod to complete") \
2958 \
2959 product(uintx, ThreadSafetyMargin, 50*M, \
2960 "Thread safety margin is used on fixed-stack LinuxThreads (on " \
2961 "Linux/x86 only) to prevent heap-stack collision. Set to 0 to " \
2962 "disable this feature") \
2963 \
2964 /* code cache parameters */ \
2965 develop(uintx, CodeCacheSegmentSize, 64, \
2966 "Code cache segment size (in bytes) - smallest unit of " \
2967 "allocation") \
2968 \
2969 develop_pd(intx, CodeEntryAlignment, \
2970 "Code entry alignment for generated code (in bytes)") \
2971 \
2972 product_pd(uintx, InitialCodeCacheSize, \
2973 "Initial code cache size (in bytes)") \
2974 \
2975 product_pd(uintx, ReservedCodeCacheSize, \
2976 "Reserved code cache size (in bytes) - maximum code cache size") \
2977 \
2978 product(uintx, CodeCacheMinimumFreeSpace, 500*K, \
2979 "When less than X space left, we stop compiling.") \
2980 \
2981 product_pd(uintx, CodeCacheExpansionSize, \
2982 "Code cache expansion size (in bytes)") \
2983 \
2984 develop_pd(uintx, CodeCacheMinBlockLength, \
2985 "Minimum number of segments in a code cache block.") \
2986 \
2987 notproduct(bool, ExitOnFullCodeCache, false, \
2988 "Exit the VM if we fill the code cache.") \
2989 \
2990 /* interpreter debugging */ \
2991 develop(intx, BinarySwitchThreshold, 5, \
2992 "Minimal number of lookupswitch entries for rewriting to binary " \
2993 "switch") \
2994 \
2995 develop(intx, StopInterpreterAt, 0, \
2996 "Stops interpreter execution at specified bytecode number") \
2997 \
2998 develop(intx, TraceBytecodesAt, 0, \
2999 "Traces bytecodes starting with specified bytecode number") \
3000 \
3001 /* compiler interface */ \
3002 develop(intx, CIStart, 0, \
3003 "the id of the first compilation to permit") \
3004 \
3005 develop(intx, CIStop, -1, \
3006 "the id of the last compilation to permit") \
3007 \
3008 develop(intx, CIStartOSR, 0, \
3009 "the id of the first osr compilation to permit " \
3010 "(CICountOSR must be on)") \
3011 \
3012 develop(intx, CIStopOSR, -1, \
3013 "the id of the last osr compilation to permit " \
3014 "(CICountOSR must be on)") \
3015 \
3016 develop(intx, CIBreakAtOSR, -1, \
3017 "id of osr compilation to break at") \
3018 \
3019 develop(intx, CIBreakAt, -1, \
3020 "id of compilation to break at") \
3021 \
3022 product(ccstrlist, CompileOnly, "", \
3023 "List of methods (pkg/class.name) to restrict compilation to") \
3024 \
3025 product(ccstr, CompileCommandFile, NULL, \
3026 "Read compiler commands from this file [.hotspot_compiler]") \
3027 \
3028 product(ccstrlist, CompileCommand, "", \
3029 "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \
3030 \
3031 product(bool, CICompilerCountPerCPU, false, \
3032 "1 compiler thread for log(N CPUs)") \
3033 \
3034 develop(intx, CIFireOOMAt, -1, \
3035 "Fire OutOfMemoryErrors throughout CI for testing the compiler " \
3036 "(non-negative value throws OOM after this many CI accesses " \
3037 "in each compile)") \
3038 \
3039 develop(intx, CIFireOOMAtDelay, -1, \
3040 "Wait for this many CI accesses to occur in all compiles before " \
3041 "beginning to throw OutOfMemoryErrors in each compile") \
3042 \
3043 /* Priorities */ \
3044 product_pd(bool, UseThreadPriorities, "Use native thread priorities") \
3045 \
3046 product(intx, ThreadPriorityPolicy, 0, \
3047 "0 : Normal. "\
3048 " VM chooses priorities that are appropriate for normal "\
3049 " applications. On Solaris NORM_PRIORITY and above are mapped "\
3050 " to normal native priority. Java priorities below NORM_PRIORITY"\
3051 " map to lower native priority values. On Windows applications"\
3052 " are allowed to use higher native priorities. However, with "\
3053 " ThreadPriorityPolicy=0, VM will not use the highest possible"\
3054 " native priority, THREAD_PRIORITY_TIME_CRITICAL, as it may "\
3055 " interfere with system threads. On Linux thread priorities "\
3056 " are ignored because the OS does not support static priority "\
3057 " in SCHED_OTHER scheduling class which is the only choice for"\
3058 " non-root, non-realtime applications. "\
3059 "1 : Aggressive. "\
3060 " Java thread priorities map over to the entire range of "\
3061 " native thread priorities. Higher Java thread priorities map "\
3062 " to higher native thread priorities. This policy should be "\
3063 " used with care, as sometimes it can cause performance "\
3064 " degradation in the application and/or the entire system. On "\
3065 " Linux this policy requires root privilege.") \
3066 \
3067 product(bool, ThreadPriorityVerbose, false, \
3068 "print priority changes") \
3069 \
3070 product(intx, DefaultThreadPriority, -1, \
3071 "what native priority threads run at if not specified elsewhere (-1 means no change)") \
3072 \
3073 product(intx, CompilerThreadPriority, -1, \
3074 "what priority should compiler threads run at (-1 means no change)") \
3075 \
3076 product(intx, VMThreadPriority, -1, \
3077 "what priority should VM threads run at (-1 means no change)") \
3078 \
3079 product(bool, CompilerThreadHintNoPreempt, true, \
3080 "(Solaris only) Give compiler threads an extra quanta") \
3081 \
3082 product(bool, VMThreadHintNoPreempt, false, \
3083 "(Solaris only) Give VM thread an extra quanta") \
3084 \
3085 product(intx, JavaPriority1_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3086 product(intx, JavaPriority2_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3087 product(intx, JavaPriority3_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3088 product(intx, JavaPriority4_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3089 product(intx, JavaPriority5_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3090 product(intx, JavaPriority6_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3091 product(intx, JavaPriority7_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3092 product(intx, JavaPriority8_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3093 product(intx, JavaPriority9_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3094 product(intx, JavaPriority10_To_OSPriority,-1, "Map Java priorities to OS priorities") \
3095 \
3096 /* compiler debugging */ \
3097 notproduct(intx, CompileTheWorldStartAt, 1, \
3098 "First class to consider when using +CompileTheWorld") \
3099 \
3100 notproduct(intx, CompileTheWorldStopAt, max_jint, \
3101 "Last class to consider when using +CompileTheWorld") \
3102 \
3103 develop(intx, NewCodeParameter, 0, \
3104 "Testing Only: Create a dedicated integer parameter before " \
3105 "putback") \
3106 \
3107 /* new oopmap storage allocation */ \
3108 develop(intx, MinOopMapAllocation, 8, \
3109 "Minimum number of OopMap entries in an OopMapSet") \
3110 \
3111 /* Background Compilation */ \
3112 develop(intx, LongCompileThreshold, 50, \
3113 "Used with +TraceLongCompiles") \
3114 \
3115 product(intx, StarvationMonitorInterval, 200, \
3116 "Pause between each check in ms") \
3117 \
3118 /* recompilation */ \
3119 product_pd(intx, CompileThreshold, \
3120 "number of interpreted method invocations before (re-)compiling") \
3121 \
3122 product_pd(intx, BackEdgeThreshold, \
3123 "Interpreter Back edge threshold at which an OSR compilation is invoked")\
3124 \
3125 product(intx, Tier1BytecodeLimit, 10, \
3126 "Must have at least this many bytecodes before tier1" \
3127 "invocation counters are used") \
3128 \
3129 product_pd(intx, Tier2CompileThreshold, \
3130 "threshold at which a tier 2 compilation is invoked") \
3131 \
3132 product_pd(intx, Tier2BackEdgeThreshold, \
3133 "Back edge threshold at which a tier 2 compilation is invoked") \
3134 \
3135 product_pd(intx, Tier3CompileThreshold, \
3136 "threshold at which a tier 3 compilation is invoked") \
3137 \
3138 product_pd(intx, Tier3BackEdgeThreshold, \
3139 "Back edge threshold at which a tier 3 compilation is invoked") \
3140 \
3141 product_pd(intx, Tier4CompileThreshold, \
3142 "threshold at which a tier 4 compilation is invoked") \
3143 \
3144 product_pd(intx, Tier4BackEdgeThreshold, \
3145 "Back edge threshold at which a tier 4 compilation is invoked") \
3146 \
3147 product_pd(bool, TieredCompilation, \
3148 "Enable two-tier compilation") \
3149 \
3150 product(bool, StressTieredRuntime, false, \
3151 "Alternate client and server compiler on compile requests") \
3152 \
3153 product_pd(intx, OnStackReplacePercentage, \
3154 "NON_TIERED number of method invocations/branches (expressed as %"\
3155 "of CompileThreshold) before (re-)compiling OSR code") \
3156 \
3157 product(intx, InterpreterProfilePercentage, 33, \
3158 "NON_TIERED number of method invocations/branches (expressed as %"\
3159 "of CompileThreshold) before profiling in the interpreter") \
3160 \
3161 develop(intx, MaxRecompilationSearchLength, 10, \
3162 "max. # frames to inspect searching for recompilee") \
3163 \
3164 develop(intx, MaxInterpretedSearchLength, 3, \
3165 "max. # interp. frames to skip when searching for recompilee") \
3166 \
3167 develop(intx, DesiredMethodLimit, 8000, \
3168 "desired max. method size (in bytecodes) after inlining") \
3169 \
3170 develop(intx, HugeMethodLimit, 8000, \
3171 "don't compile methods larger than this if " \
3172 "+DontCompileHugeMethods") \
3173 \
3174 /* New JDK 1.4 reflection implementation */ \
3175 \
3176 develop(bool, UseNewReflection, true, \
3177 "Temporary flag for transition to reflection based on dynamic " \
3178 "bytecode generation in 1.4; can no longer be turned off in 1.4 " \
3179 "JDK, and is unneeded in 1.3 JDK, but marks most places VM " \
3180 "changes were needed") \
3181 \
3182 develop(bool, VerifyReflectionBytecodes, false, \
3183 "Force verification of 1.4 reflection bytecodes. Does not work " \
3184 "in situations like that described in 4486457 or for " \
3185 "constructors generated for serialization, so can not be enabled "\
3186 "in product.") \
3187 \
3188 product(bool, ReflectionWrapResolutionErrors, true, \
3189 "Temporary flag for transition to AbstractMethodError wrapped " \
3190 "in InvocationTargetException. See 6531596") \
3191 \
3192 \
3193 develop(intx, FastSuperclassLimit, 8, \
3194 "Depth of hardwired instanceof accelerator array") \
3195 \
3196 /* Properties for Java libraries */ \
3197 \
3198 product(intx, MaxDirectMemorySize, -1, \
3199 "Maximum total size of NIO direct-buffer allocations") \
3200 \
3201 /* temporary developer defined flags */ \
3202 \
3203 diagnostic(bool, UseNewCode, false, \
3204 "Testing Only: Use the new version while testing") \
3205 \
3206 diagnostic(bool, UseNewCode2, false, \
3207 "Testing Only: Use the new version while testing") \
3208 \
3209 diagnostic(bool, UseNewCode3, false, \
3210 "Testing Only: Use the new version while testing") \
3211 \
3212 /* flags for performance data collection */ \
3213 \
3214 product(bool, UsePerfData, true, \
3215 "Flag to disable jvmstat instrumentation for performance testing" \
3216 "and problem isolation purposes.") \
3217 \
3218 product(bool, PerfDataSaveToFile, false, \
3219 "Save PerfData memory to hsperfdata_<pid> file on exit") \
3220 \
3221 product(ccstr, PerfDataSaveFile, NULL, \
3222 "Save PerfData memory to the specified absolute pathname," \
3223 "%p in the file name if present will be replaced by pid") \
3224 \
3225 product(intx, PerfDataSamplingInterval, 50 /*ms*/, \
3226 "Data sampling interval in milliseconds") \
3227 \
3228 develop(bool, PerfTraceDataCreation, false, \
3229 "Trace creation of Performance Data Entries") \
3230 \
3231 develop(bool, PerfTraceMemOps, false, \
3232 "Trace PerfMemory create/attach/detach calls") \
3233 \
3234 product(bool, PerfDisableSharedMem, false, \
3235 "Store performance data in standard memory") \
3236 \
3237 product(intx, PerfDataMemorySize, 32*K, \
3238 "Size of performance data memory region. Will be rounded " \
3239 "up to a multiple of the native os page size.") \
3240 \
3241 product(intx, PerfMaxStringConstLength, 1024, \
3242 "Maximum PerfStringConstant string length before truncation") \
3243 \
3244 product(bool, PerfAllowAtExitRegistration, false, \
3245 "Allow registration of atexit() methods") \
3246 \
3247 product(bool, PerfBypassFileSystemCheck, false, \
3248 "Bypass Win32 file system criteria checks (Windows Only)") \
3249 \
3250 product(intx, UnguardOnExecutionViolation, 0, \
3251 "Unguard page and retry on no-execute fault (Win32 only)" \
3252 "0=off, 1=conservative, 2=aggressive") \
3253 \
3254 /* Serviceability Support */ \
3255 \
3256 product(bool, ManagementServer, false, \
3257 "Create JMX Management Server") \
3258 \
3259 product(bool, DisableAttachMechanism, false, \
3260 "Disable mechanism that allows tools to attach to this VM") \
3261 \
3262 product(bool, StartAttachListener, false, \
3263 "Always start Attach Listener at VM startup") \
3264 \
3265 manageable(bool, PrintConcurrentLocks, false, \
3266 "Print java.util.concurrent locks in thread dump") \
3267 \
3268 /* Shared spaces */ \
3269 \
3270 product(bool, UseSharedSpaces, true, \
3271 "Use shared spaces in the permanent generation") \
3272 \
3273 product(bool, RequireSharedSpaces, false, \
3274 "Require shared spaces in the permanent generation") \
3275 \
3276 product(bool, ForceSharedSpaces, false, \
3277 "Require shared spaces in the permanent generation") \
3278 \
3279 product(bool, DumpSharedSpaces, false, \
3280 "Special mode: JVM reads a class list, loads classes, builds " \
3281 "shared spaces, and dumps the shared spaces to a file to be " \
3282 "used in future JVM runs.") \
3283 \
3284 product(bool, PrintSharedSpaces, false, \
3285 "Print usage of shared spaces") \
3286 \
3287 product(uintx, SharedDummyBlockSize, 512*M, \
3288 "Size of dummy block used to shift heap addresses (in bytes)") \
3289 \
3290 product(uintx, SharedReadWriteSize, 12*M, \
3291 "Size of read-write space in permanent generation (in bytes)") \
3292 \
3293 product(uintx, SharedReadOnlySize, 8*M, \
3294 "Size of read-only space in permanent generation (in bytes)") \
3295 \
3296 product(uintx, SharedMiscDataSize, 4*M, \
3297 "Size of the shared data area adjacent to the heap (in bytes)") \
3298 \
3299 product(uintx, SharedMiscCodeSize, 4*M, \
3300 "Size of the shared code area adjacent to the heap (in bytes)") \
3301 \
3302 diagnostic(bool, SharedOptimizeColdStart, true, \
3303 "At dump time, order shared objects to achieve better " \
3304 "cold startup time.") \
3305 \
3306 develop(intx, SharedOptimizeColdStartPolicy, 2, \
3307 "Reordering policy for SharedOptimizeColdStart " \
3308 "0=favor classload-time locality, 1=balanced, " \
3309 "2=favor runtime locality") \
3310 \
3311 diagnostic(bool, SharedSkipVerify, false, \
3312 "Skip assert() and verify() which page-in unwanted shared " \
3313 "objects. ") \
3314 \
3315 product(bool, AnonymousClasses, false, \
3316 "support sun.misc.Unsafe.defineAnonymousClass") \
3317 \
3318 product(bool, EnableMethodHandles, false, \
3319 "support method handles (true by default under JSR 292)") \
3320 \
3321 diagnostic(intx, MethodHandlePushLimit, 3, \
3322 "number of additional stack slots a method handle may push") \
3323 \
3324 develop(bool, TraceMethodHandles, false, \
3325 "trace internal method handle operations") \
3326 \
3327 diagnostic(bool, VerifyMethodHandles, trueInDebug, \
3328 "perform extra checks when constructing method handles") \
3329 \
3330 diagnostic(bool, OptimizeMethodHandles, true, \
3331 "when constructing method handles, try to improve them") \
3332 \
3333 product(bool, EnableInvokeDynamic, false, \
3334 "recognize the invokedynamic instruction") \
3335 \
3336 develop(bool, TraceInvokeDynamic, false, \
3337 "trace internal invoke dynamic operations") \
3338 \
3339 product(bool, TaggedStackInterpreter, false, \
3340 "Insert tags in interpreter execution stack for oopmap generaion")\
3341 \
3342 diagnostic(bool, PauseAtStartup, false, \
3343 "Causes the VM to pause at startup time and wait for the pause " \
3344 "file to be removed (default: ./vm.paused.<pid>)") \
3345 \
3346 diagnostic(ccstr, PauseAtStartupFile, NULL, \
3347 "The file to create and for whose removal to await when pausing " \
3348 "at startup. (default: ./vm.paused.<pid>)") \
3349 \
3350 product(bool, ExtendedDTraceProbes, false, \
3351 "Enable performance-impacting dtrace probes") \
3352 \
3353 product(bool, DTraceMethodProbes, false, \
3354 "Enable dtrace probes for method-entry and method-exit") \
3355 \
3356 product(bool, DTraceAllocProbes, false, \
3357 "Enable dtrace probes for object allocation") \
3358 \
3359 product(bool, DTraceMonitorProbes, false, \
3360 "Enable dtrace probes for monitor events") \
3361 \
3362 product(bool, RelaxAccessControlCheck, false, \
3363 "Relax the access control checks in the verifier") \
3364 \
3365 diagnostic(bool, PrintDTraceDOF, false, \
3366 "Print the DTrace DOF passed to the system for JSDT probes") \
3367 \
3368 product(bool, UseVMInterruptibleIO, false, \
3369 "(Unstable, Solaris-specific) Thread interrupt before or with " \
3370 "EINTR for I/O operations results in OS_INTRPT. The default value"\
3371 " of this flag is true for JDK 6 and earliers")
3374 /*
3375 * Macros for factoring of globals
3376 */
3378 // Interface macros
3379 #define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name;
3380 #define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name;
3381 #define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name;
3382 #define DECLARE_EXPERIMENTAL_FLAG(type, name, value, doc) extern "C" type name;
3383 #define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name;
3384 #define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name;
3385 #ifdef PRODUCT
3386 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) const type name = value;
3387 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) const type name = pd_##name;
3388 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc)
3389 #else
3390 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name;
3391 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name;
3392 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name;
3393 #endif
3394 // Special LP64 flags, product only needed for now.
3395 #ifdef _LP64
3396 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) extern "C" type name;
3397 #else
3398 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) const type name = value;
3399 #endif // _LP64
3401 // Implementation macros
3402 #define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value;
3403 #define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name;
3404 #define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value;
3405 #define MATERIALIZE_EXPERIMENTAL_FLAG(type, name, value, doc) type name = value;
3406 #define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value;
3407 #define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value;
3408 #ifdef PRODUCT
3409 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) /* flag name is constant */
3410 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) /* flag name is constant */
3411 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc)
3412 #else
3413 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value;
3414 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name;
3415 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value;
3416 #endif
3417 #ifdef _LP64
3418 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) type name = value;
3419 #else
3420 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) /* flag is constant */
3421 #endif // _LP64
3423 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)
3425 RUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG)