Mercurial > jdk8-mips64-public > hotspot / file revision
src/share/vm/runtime/globals.hpp@4f25538b54c9
src/share/vm/runtime/globals.hpp
Mon, 09 Jan 2012 10:27:24 +0100
- author
- fparain
- date
- Mon, 09 Jan 2012 10:27:24 +0100
- changeset 3402
- 4f25538b54c9
- parent 3342
- 6c995c08526c
- child 3403
- 865e0817f32b
- permissions
- -rw-r--r--
7120511: Add diagnostic commands
Reviewed-by: acorn, phh, dcubed, sspitsyn
1 /*
2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 #ifndef SHARE_VM_RUNTIME_GLOBALS_HPP
26 #define SHARE_VM_RUNTIME_GLOBALS_HPP
28 #include "utilities/debug.hpp"
29 #ifdef TARGET_ARCH_x86
30 # include "globals_x86.hpp"
31 #endif
32 #ifdef TARGET_ARCH_sparc
33 # include "globals_sparc.hpp"
34 #endif
35 #ifdef TARGET_ARCH_zero
36 # include "globals_zero.hpp"
37 #endif
38 #ifdef TARGET_ARCH_arm
39 # include "globals_arm.hpp"
40 #endif
41 #ifdef TARGET_ARCH_ppc
42 # include "globals_ppc.hpp"
43 #endif
44 #ifdef TARGET_OS_FAMILY_linux
45 # include "globals_linux.hpp"
46 #endif
47 #ifdef TARGET_OS_FAMILY_solaris
48 # include "globals_solaris.hpp"
49 #endif
50 #ifdef TARGET_OS_FAMILY_windows
51 # include "globals_windows.hpp"
52 #endif
53 #ifdef TARGET_OS_FAMILY_bsd
54 # include "globals_bsd.hpp"
55 #endif
56 #ifdef TARGET_OS_ARCH_linux_x86
57 # include "globals_linux_x86.hpp"
58 #endif
59 #ifdef TARGET_OS_ARCH_linux_sparc
60 # include "globals_linux_sparc.hpp"
61 #endif
62 #ifdef TARGET_OS_ARCH_linux_zero
63 # include "globals_linux_zero.hpp"
64 #endif
65 #ifdef TARGET_OS_ARCH_solaris_x86
66 # include "globals_solaris_x86.hpp"
67 #endif
68 #ifdef TARGET_OS_ARCH_solaris_sparc
69 # include "globals_solaris_sparc.hpp"
70 #endif
71 #ifdef TARGET_OS_ARCH_windows_x86
72 # include "globals_windows_x86.hpp"
73 #endif
74 #ifdef TARGET_OS_ARCH_linux_arm
75 # include "globals_linux_arm.hpp"
76 #endif
77 #ifdef TARGET_OS_ARCH_linux_ppc
78 # include "globals_linux_ppc.hpp"
79 #endif
80 #ifdef TARGET_OS_ARCH_bsd_x86
81 # include "globals_bsd_x86.hpp"
82 #endif
83 #ifdef TARGET_OS_ARCH_bsd_zero
84 # include "globals_bsd_zero.hpp"
85 #endif
86 #ifdef COMPILER1
87 #ifdef TARGET_ARCH_x86
88 # include "c1_globals_x86.hpp"
89 #endif
90 #ifdef TARGET_ARCH_sparc
91 # include "c1_globals_sparc.hpp"
92 #endif
93 #ifdef TARGET_ARCH_arm
94 # include "c1_globals_arm.hpp"
95 #endif
96 #ifdef TARGET_ARCH_ppc
97 # include "c1_globals_ppc.hpp"
98 #endif
99 #ifdef TARGET_OS_FAMILY_linux
100 # include "c1_globals_linux.hpp"
101 #endif
102 #ifdef TARGET_OS_FAMILY_solaris
103 # include "c1_globals_solaris.hpp"
104 #endif
105 #ifdef TARGET_OS_FAMILY_windows
106 # include "c1_globals_windows.hpp"
107 #endif
108 #ifdef TARGET_OS_FAMILY_bsd
109 # include "c1_globals_bsd.hpp"
110 #endif
111 #endif
112 #ifdef COMPILER2
113 #ifdef TARGET_ARCH_x86
114 # include "c2_globals_x86.hpp"
115 #endif
116 #ifdef TARGET_ARCH_sparc
117 # include "c2_globals_sparc.hpp"
118 #endif
119 #ifdef TARGET_ARCH_arm
120 # include "c2_globals_arm.hpp"
121 #endif
122 #ifdef TARGET_OS_FAMILY_linux
123 # include "c2_globals_linux.hpp"
124 #endif
125 #ifdef TARGET_OS_FAMILY_solaris
126 # include "c2_globals_solaris.hpp"
127 #endif
128 #ifdef TARGET_OS_FAMILY_windows
129 # include "c2_globals_windows.hpp"
130 #endif
131 #ifdef TARGET_OS_FAMILY_bsd
132 # include "c2_globals_bsd.hpp"
133 #endif
134 #endif
135 #ifdef SHARK
136 #ifdef TARGET_ARCH_zero
137 # include "shark_globals_zero.hpp"
138 #endif
139 #endif
141 #if !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK)
142 define_pd_global(bool, BackgroundCompilation, false);
143 define_pd_global(bool, UseTLAB, false);
144 define_pd_global(bool, CICompileOSR, false);
145 define_pd_global(bool, UseTypeProfile, false);
146 define_pd_global(bool, UseOnStackReplacement, false);
147 define_pd_global(bool, InlineIntrinsics, false);
148 define_pd_global(bool, PreferInterpreterNativeStubs, true);
149 define_pd_global(bool, ProfileInterpreter, false);
150 define_pd_global(bool, ProfileTraps, false);
151 define_pd_global(bool, TieredCompilation, false);
153 define_pd_global(intx, CompileThreshold, 0);
154 define_pd_global(intx, BackEdgeThreshold, 0);
156 define_pd_global(intx, OnStackReplacePercentage, 0);
157 define_pd_global(bool, ResizeTLAB, false);
158 define_pd_global(intx, FreqInlineSize, 0);
159 define_pd_global(intx, InlineSmallCode, 0);
160 define_pd_global(intx, NewSizeThreadIncrease, 4*K);
161 define_pd_global(intx, InlineClassNatives, true);
162 define_pd_global(intx, InlineUnsafeOps, true);
163 define_pd_global(intx, InitialCodeCacheSize, 160*K);
164 define_pd_global(intx, ReservedCodeCacheSize, 32*M);
165 define_pd_global(intx, CodeCacheExpansionSize, 32*K);
166 define_pd_global(intx, CodeCacheMinBlockLength, 1);
167 define_pd_global(uintx,PermSize, ScaleForWordSize(4*M));
168 define_pd_global(uintx,MaxPermSize, ScaleForWordSize(64*M));
169 define_pd_global(bool, NeverActAsServerClassMachine, true);
170 define_pd_global(uint64_t,MaxRAM, 1ULL*G);
171 #define CI_COMPILER_COUNT 0
172 #else
174 #ifdef COMPILER2
175 #define CI_COMPILER_COUNT 2
176 #else
177 #define CI_COMPILER_COUNT 1
178 #endif // COMPILER2
180 #endif // no compilers
183 // string type aliases used only in this file
184 typedef const char* ccstr;
185 typedef const char* ccstrlist; // represents string arguments which accumulate
187 enum FlagValueOrigin {
188 DEFAULT = 0,
189 COMMAND_LINE = 1,
190 ENVIRON_VAR = 2,
191 CONFIG_FILE = 3,
192 MANAGEMENT = 4,
193 ERGONOMIC = 5,
194 ATTACH_ON_DEMAND = 6,
195 INTERNAL = 99
196 };
198 struct Flag {
199 const char *type;
200 const char *name;
201 void* addr;
203 NOT_PRODUCT(const char *doc;)
205 const char *kind;
206 FlagValueOrigin origin;
208 // points to all Flags static array
209 static Flag *flags;
211 // number of flags
212 static size_t numFlags;
214 static Flag* find_flag(char* name, size_t length);
216 bool is_bool() const { return strcmp(type, "bool") == 0; }
217 bool get_bool() const { return *((bool*) addr); }
218 void set_bool(bool value) { *((bool*) addr) = value; }
220 bool is_intx() const { return strcmp(type, "intx") == 0; }
221 intx get_intx() const { return *((intx*) addr); }
222 void set_intx(intx value) { *((intx*) addr) = value; }
224 bool is_uintx() const { return strcmp(type, "uintx") == 0; }
225 uintx get_uintx() const { return *((uintx*) addr); }
226 void set_uintx(uintx value) { *((uintx*) addr) = value; }
228 bool is_uint64_t() const { return strcmp(type, "uint64_t") == 0; }
229 uint64_t get_uint64_t() const { return *((uint64_t*) addr); }
230 void set_uint64_t(uint64_t value) { *((uint64_t*) addr) = value; }
232 bool is_double() const { return strcmp(type, "double") == 0; }
233 double get_double() const { return *((double*) addr); }
234 void set_double(double value) { *((double*) addr) = value; }
236 bool is_ccstr() const { return strcmp(type, "ccstr") == 0 || strcmp(type, "ccstrlist") == 0; }
237 bool ccstr_accumulates() const { return strcmp(type, "ccstrlist") == 0; }
238 ccstr get_ccstr() const { return *((ccstr*) addr); }
239 void set_ccstr(ccstr value) { *((ccstr*) addr) = value; }
241 bool is_unlocker() const;
242 bool is_unlocked() const;
243 bool is_writeable() const;
244 bool is_external() const;
246 bool is_unlocker_ext() const;
247 bool is_unlocked_ext() const;
248 bool is_writeable_ext() const;
249 bool is_external_ext() const;
251 void print_on(outputStream* st, bool withComments = false );
252 void print_as_flag(outputStream* st);
253 };
255 // debug flags control various aspects of the VM and are global accessible
257 // use FlagSetting to temporarily change some debug flag
258 // e.g. FlagSetting fs(DebugThisAndThat, true);
259 // restored to previous value upon leaving scope
260 class FlagSetting {
261 bool val;
262 bool* flag;
263 public:
264 FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; }
265 ~FlagSetting() { *flag = val; }
266 };
269 class CounterSetting {
270 intx* counter;
271 public:
272 CounterSetting(intx* cnt) { counter = cnt; (*counter)++; }
273 ~CounterSetting() { (*counter)--; }
274 };
277 class IntFlagSetting {
278 intx val;
279 intx* flag;
280 public:
281 IntFlagSetting(intx& fl, intx newValue) { flag = &fl; val = fl; fl = newValue; }
282 ~IntFlagSetting() { *flag = val; }
283 };
286 class DoubleFlagSetting {
287 double val;
288 double* flag;
289 public:
290 DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; }
291 ~DoubleFlagSetting() { *flag = val; }
292 };
295 class CommandLineFlags {
296 public:
297 static bool boolAt(char* name, size_t len, bool* value);
298 static bool boolAt(char* name, bool* value) { return boolAt(name, strlen(name), value); }
299 static bool boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin);
300 static bool boolAtPut(char* name, bool* value, FlagValueOrigin origin) { return boolAtPut(name, strlen(name), value, origin); }
302 static bool intxAt(char* name, size_t len, intx* value);
303 static bool intxAt(char* name, intx* value) { return intxAt(name, strlen(name), value); }
304 static bool intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin);
305 static bool intxAtPut(char* name, intx* value, FlagValueOrigin origin) { return intxAtPut(name, strlen(name), value, origin); }
307 static bool uintxAt(char* name, size_t len, uintx* value);
308 static bool uintxAt(char* name, uintx* value) { return uintxAt(name, strlen(name), value); }
309 static bool uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin);
310 static bool uintxAtPut(char* name, uintx* value, FlagValueOrigin origin) { return uintxAtPut(name, strlen(name), value, origin); }
312 static bool uint64_tAt(char* name, size_t len, uint64_t* value);
313 static bool uint64_tAt(char* name, uint64_t* value) { return uint64_tAt(name, strlen(name), value); }
314 static bool uint64_tAtPut(char* name, size_t len, uint64_t* value, FlagValueOrigin origin);
315 static bool uint64_tAtPut(char* name, uint64_t* value, FlagValueOrigin origin) { return uint64_tAtPut(name, strlen(name), value, origin); }
317 static bool doubleAt(char* name, size_t len, double* value);
318 static bool doubleAt(char* name, double* value) { return doubleAt(name, strlen(name), value); }
319 static bool doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin);
320 static bool doubleAtPut(char* name, double* value, FlagValueOrigin origin) { return doubleAtPut(name, strlen(name), value, origin); }
322 static bool ccstrAt(char* name, size_t len, ccstr* value);
323 static bool ccstrAt(char* name, ccstr* value) { return ccstrAt(name, strlen(name), value); }
324 static bool ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin);
325 static bool ccstrAtPut(char* name, ccstr* value, FlagValueOrigin origin) { return ccstrAtPut(name, strlen(name), value, origin); }
327 // Returns false if name is not a command line flag.
328 static bool wasSetOnCmdline(const char* name, bool* value);
329 static void printSetFlags(outputStream* out);
331 static void printFlags(outputStream* out, bool withComments);
333 static void verify() PRODUCT_RETURN;
334 };
336 // use this for flags that are true by default in the debug version but
337 // false in the optimized version, and vice versa
338 #ifdef ASSERT
339 #define trueInDebug true
340 #define falseInDebug false
341 #else
342 #define trueInDebug false
343 #define falseInDebug true
344 #endif
346 // use this for flags that are true per default in the product build
347 // but false in development builds, and vice versa
348 #ifdef PRODUCT
349 #define trueInProduct true
350 #define falseInProduct false
351 #else
352 #define trueInProduct false
353 #define falseInProduct true
354 #endif
356 // use this for flags that are true per default in the tiered build
357 // but false in non-tiered builds, and vice versa
358 #ifdef TIERED
359 #define trueInTiered true
360 #define falseInTiered false
361 #else
362 #define trueInTiered false
363 #define falseInTiered true
364 #endif
366 #ifdef JAVASE_EMBEDDED
367 #define falseInEmbedded false
368 #else
369 #define falseInEmbedded true
370 #endif
372 // develop flags are settable / visible only during development and are constant in the PRODUCT version
373 // product flags are always settable / visible
374 // notproduct flags are settable / visible only during development and are not declared in the PRODUCT version
376 // A flag must be declared with one of the following types:
377 // bool, intx, uintx, ccstr.
378 // The type "ccstr" is an alias for "const char*" and is used
379 // only in this file, because the macrology requires single-token type names.
381 // Note: Diagnostic options not meant for VM tuning or for product modes.
382 // They are to be used for VM quality assurance or field diagnosis
383 // of VM bugs. They are hidden so that users will not be encouraged to
384 // try them as if they were VM ordinary execution options. However, they
385 // are available in the product version of the VM. Under instruction
386 // from support engineers, VM customers can turn them on to collect
387 // diagnostic information about VM problems. To use a VM diagnostic
388 // option, you must first specify +UnlockDiagnosticVMOptions.
389 // (This master switch also affects the behavior of -Xprintflags.)
390 //
391 // experimental flags are in support of features that are not
392 // part of the officially supported product, but are available
393 // for experimenting with. They could, for example, be performance
394 // features that may not have undergone full or rigorous QA, but which may
395 // help performance in some cases and released for experimentation
396 // by the community of users and developers. This flag also allows one to
397 // be able to build a fully supported product that nonetheless also
398 // ships with some unsupported, lightly tested, experimental features.
399 // Like the UnlockDiagnosticVMOptions flag above, there is a corresponding
400 // UnlockExperimentalVMOptions flag, which allows the control and
401 // modification of the experimental flags.
402 //
403 // Nota bene: neither diagnostic nor experimental options should be used casually,
404 // and they are not supported on production loads, except under explicit
405 // direction from support engineers.
406 //
407 // manageable flags are writeable external product flags.
408 // They are dynamically writeable through the JDK management interface
409 // (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole.
410 // These flags are external exported interface (see CCC). The list of
411 // manageable flags can be queried programmatically through the management
412 // interface.
413 //
414 // A flag can be made as "manageable" only if
415 // - the flag is defined in a CCC as an external exported interface.
416 // - the VM implementation supports dynamic setting of the flag.
417 // This implies that the VM must *always* query the flag variable
418 // and not reuse state related to the flag state at any given time.
419 // - you want the flag to be queried programmatically by the customers.
420 //
421 // product_rw flags are writeable internal product flags.
422 // They are like "manageable" flags but for internal/private use.
423 // The list of product_rw flags are internal/private flags which
424 // may be changed/removed in a future release. It can be set
425 // through the management interface to get/set value
426 // when the name of flag is supplied.
427 //
428 // A flag can be made as "product_rw" only if
429 // - the VM implementation supports dynamic setting of the flag.
430 // This implies that the VM must *always* query the flag variable
431 // and not reuse state related to the flag state at any given time.
432 //
433 // Note that when there is a need to support develop flags to be writeable,
434 // it can be done in the same way as product_rw.
436 #define RUNTIME_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw, lp64_product) \
437 \
438 lp64_product(bool, UseCompressedOops, false, \
439 "Use 32-bit object references in 64-bit VM. " \
440 "lp64_product means flag is always constant in 32 bit VM") \
441 \
442 notproduct(bool, CheckCompressedOops, true, \
443 "generate checks in encoding/decoding code in debug VM") \
444 \
445 product_pd(uintx, HeapBaseMinAddress, \
446 "OS specific low limit for heap base address") \
447 \
448 diagnostic(bool, PrintCompressedOopsMode, false, \
449 "Print compressed oops base address and encoding mode") \
450 \
451 lp64_product(intx, ObjectAlignmentInBytes, 8, \
452 "Default object alignment in bytes, 8 is minimum") \
453 \
454 /* UseMembar is theoretically a temp flag used for memory barrier \
455 * removal testing. It was supposed to be removed before FCS but has \
456 * been re-added (see 6401008) */ \
457 product_pd(bool, UseMembar, \
458 "(Unstable) Issues membars on thread state transitions") \
459 \
460 /* Temp PPC Flag to allow disabling the use of lwsync on ppc platforms \
461 * that don't support it. This will be replaced by processor detection \
462 * logic. \
463 */ \
464 product(bool, UsePPCLWSYNC, true, \
465 "Use lwsync instruction if true, else use slower sync") \
466 \
467 develop(bool, CleanChunkPoolAsync, falseInEmbedded, \
468 "Whether to clean the chunk pool asynchronously") \
469 \
470 /* Temporary: See 6948537 */ \
471 experimental(bool, UseMemSetInBOT, true, \
472 "(Unstable) uses memset in BOT updates in GC code") \
473 \
474 diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \
475 "Enable normal processing of flags relating to field diagnostics")\
476 \
477 experimental(bool, UnlockExperimentalVMOptions, false, \
478 "Enable normal processing of flags relating to experimental features")\
479 \
480 product(bool, JavaMonitorsInStackTrace, true, \
481 "Print info. about Java monitor locks when the stacks are dumped")\
482 \
483 product_pd(bool, UseLargePages, \
484 "Use large page memory") \
485 \
486 product_pd(bool, UseLargePagesIndividualAllocation, \
487 "Allocate large pages individually for better affinity") \
488 \
489 develop(bool, LargePagesIndividualAllocationInjectError, false, \
490 "Fail large pages individual allocation") \
491 \
492 develop(bool, TracePageSizes, false, \
493 "Trace page size selection and usage.") \
494 \
495 product(bool, UseNUMA, false, \
496 "Use NUMA if available") \
497 \
498 product(bool, UseNUMAInterleaving, false, \
499 "Interleave memory across NUMA nodes if available") \
500 \
501 product(uintx, NUMAInterleaveGranularity, 2*M, \
502 "Granularity to use for NUMA interleaving on Windows OS") \
503 \
504 product(bool, ForceNUMA, false, \
505 "Force NUMA optimizations on single-node/UMA systems") \
506 \
507 product(intx, NUMAChunkResizeWeight, 20, \
508 "Percentage (0-100) used to weight the current sample when " \
509 "computing exponentially decaying average for " \
510 "AdaptiveNUMAChunkSizing") \
511 \
512 product(intx, NUMASpaceResizeRate, 1*G, \
513 "Do not reallocate more that this amount per collection") \
514 \
515 product(bool, UseAdaptiveNUMAChunkSizing, true, \
516 "Enable adaptive chunk sizing for NUMA") \
517 \
518 product(bool, NUMAStats, false, \
519 "Print NUMA stats in detailed heap information") \
520 \
521 product(intx, NUMAPageScanRate, 256, \
522 "Maximum number of pages to include in the page scan procedure") \
523 \
524 product_pd(bool, NeedsDeoptSuspend, \
525 "True for register window machines (sparc/ia64)") \
526 \
527 product(intx, UseSSE, 99, \
528 "Highest supported SSE instructions set on x86/x64") \
529 \
530 product(intx, UseVIS, 99, \
531 "Highest supported VIS instructions set on Sparc") \
532 \
533 product(uintx, LargePageSizeInBytes, 0, \
534 "Large page size (0 to let VM choose the page size") \
535 \
536 product(uintx, LargePageHeapSizeThreshold, 128*M, \
537 "Use large pages if max heap is at least this big") \
538 \
539 product(bool, ForceTimeHighResolution, false, \
540 "Using high time resolution(For Win32 only)") \
541 \
542 develop(bool, TraceItables, false, \
543 "Trace initialization and use of itables") \
544 \
545 develop(bool, TracePcPatching, false, \
546 "Trace usage of frame::patch_pc") \
547 \
548 develop(bool, TraceJumps, false, \
549 "Trace assembly jumps in thread ring buffer") \
550 \
551 develop(bool, TraceRelocator, false, \
552 "Trace the bytecode relocator") \
553 \
554 develop(bool, TraceLongCompiles, false, \
555 "Print out every time compilation is longer than " \
556 "a given threashold") \
557 \
558 develop(bool, SafepointALot, false, \
559 "Generates a lot of safepoints. Works with " \
560 "GuaranteedSafepointInterval") \
561 \
562 product_pd(bool, BackgroundCompilation, \
563 "A thread requesting compilation is not blocked during " \
564 "compilation") \
565 \
566 product(bool, PrintVMQWaitTime, false, \
567 "Prints out the waiting time in VM operation queue") \
568 \
569 develop(bool, BailoutToInterpreterForThrows, false, \
570 "Compiled methods which throws/catches exceptions will be " \
571 "deopt and intp.") \
572 \
573 develop(bool, NoYieldsInMicrolock, false, \
574 "Disable yields in microlock") \
575 \
576 develop(bool, TraceOopMapGeneration, false, \
577 "Shows oopmap generation") \
578 \
579 product(bool, MethodFlushing, true, \
580 "Reclamation of zombie and not-entrant methods") \
581 \
582 develop(bool, VerifyStack, false, \
583 "Verify stack of each thread when it is entering a runtime call") \
584 \
585 diagnostic(bool, ForceUnreachable, false, \
586 "Make all non code cache addresses to be unreachable with forcing use of 64bit literal fixups") \
587 \
588 notproduct(bool, StressDerivedPointers, false, \
589 "Force scavenge when a derived pointers is detected on stack " \
590 "after rtm call") \
591 \
592 develop(bool, TraceDerivedPointers, false, \
593 "Trace traversal of derived pointers on stack") \
594 \
595 notproduct(bool, TraceCodeBlobStacks, false, \
596 "Trace stack-walk of codeblobs") \
597 \
598 product(bool, PrintJNIResolving, false, \
599 "Used to implement -v:jni") \
600 \
601 notproduct(bool, PrintRewrites, false, \
602 "Print methods that are being rewritten") \
603 \
604 product(bool, UseInlineCaches, true, \
605 "Use Inline Caches for virtual calls ") \
606 \
607 develop(bool, InlineArrayCopy, true, \
608 "inline arraycopy native that is known to be part of " \
609 "base library DLL") \
610 \
611 develop(bool, InlineObjectHash, true, \
612 "inline Object::hashCode() native that is known to be part " \
613 "of base library DLL") \
614 \
615 develop(bool, InlineObjectCopy, true, \
616 "inline Object.clone and Arrays.copyOf[Range] intrinsics") \
617 \
618 develop(bool, InlineNatives, true, \
619 "inline natives that are known to be part of base library DLL") \
620 \
621 develop(bool, InlineMathNatives, true, \
622 "inline SinD, CosD, etc.") \
623 \
624 develop(bool, InlineClassNatives, true, \
625 "inline Class.isInstance, etc") \
626 \
627 develop(bool, InlineAtomicLong, true, \
628 "inline sun.misc.AtomicLong") \
629 \
630 develop(bool, InlineThreadNatives, true, \
631 "inline Thread.currentThread, etc") \
632 \
633 develop(bool, InlineReflectionGetCallerClass, true, \
634 "inline sun.reflect.Reflection.getCallerClass(), known to be part "\
635 "of base library DLL") \
636 \
637 develop(bool, InlineUnsafeOps, true, \
638 "inline memory ops (native methods) from sun.misc.Unsafe") \
639 \
640 develop(bool, ConvertCmpD2CmpF, true, \
641 "Convert cmpD to cmpF when one input is constant in float range") \
642 \
643 develop(bool, ConvertFloat2IntClipping, true, \
644 "Convert float2int clipping idiom to integer clipping") \
645 \
646 develop(bool, SpecialStringCompareTo, true, \
647 "special version of string compareTo") \
648 \
649 develop(bool, SpecialStringIndexOf, true, \
650 "special version of string indexOf") \
651 \
652 develop(bool, SpecialStringEquals, true, \
653 "special version of string equals") \
654 \
655 develop(bool, SpecialArraysEquals, true, \
656 "special version of Arrays.equals(char[],char[])") \
657 \
658 product(bool, UseSSE42Intrinsics, false, \
659 "SSE4.2 versions of intrinsics") \
660 \
661 product(bool, UseCondCardMark, false, \
662 "Check for already marked card before updating card table") \
663 \
664 develop(bool, TraceCallFixup, false, \
665 "traces all call fixups") \
666 \
667 develop(bool, DeoptimizeALot, false, \
668 "deoptimize at every exit from the runtime system") \
669 \
670 notproduct(ccstrlist, DeoptimizeOnlyAt, "", \
671 "a comma separated list of bcis to deoptimize at") \
672 \
673 product(bool, DeoptimizeRandom, false, \
674 "deoptimize random frames on random exit from the runtime system")\
675 \
676 notproduct(bool, ZombieALot, false, \
677 "creates zombies (non-entrant) at exit from the runt. system") \
678 \
679 product(bool, UnlinkSymbolsALot, false, \
680 "unlink unreferenced symbols from the symbol table at safepoints")\
681 \
682 notproduct(bool, WalkStackALot, false, \
683 "trace stack (no print) at every exit from the runtime system") \
684 \
685 product(bool, Debugging, false, \
686 "set when executing debug methods in debug.ccp " \
687 "(to prevent triggering assertions)") \
688 \
689 notproduct(bool, StrictSafepointChecks, trueInDebug, \
690 "Enable strict checks that safepoints cannot happen for threads " \
691 "that used No_Safepoint_Verifier") \
692 \
693 notproduct(bool, VerifyLastFrame, false, \
694 "Verify oops on last frame on entry to VM") \
695 \
696 develop(bool, TraceHandleAllocation, false, \
697 "Prints out warnings when suspicious many handles are allocated") \
698 \
699 product(bool, UseCompilerSafepoints, true, \
700 "Stop at safepoints in compiled code") \
701 \
702 product(bool, UseSplitVerifier, true, \
703 "use split verifier with StackMapTable attributes") \
704 \
705 product(bool, FailOverToOldVerifier, true, \
706 "fail over to old verifier when split verifier fails") \
707 \
708 develop(bool, ShowSafepointMsgs, false, \
709 "Show msg. about safepoint synch.") \
710 \
711 product(bool, SafepointTimeout, false, \
712 "Time out and warn or fail after SafepointTimeoutDelay " \
713 "milliseconds if failed to reach safepoint") \
714 \
715 develop(bool, DieOnSafepointTimeout, false, \
716 "Die upon failure to reach safepoint (see SafepointTimeout)") \
717 \
718 /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \
719 /* typically, at most a few retries are needed */ \
720 product(intx, SuspendRetryCount, 50, \
721 "Maximum retry count for an external suspend request") \
722 \
723 product(intx, SuspendRetryDelay, 5, \
724 "Milliseconds to delay per retry (* current_retry_count)") \
725 \
726 product(bool, AssertOnSuspendWaitFailure, false, \
727 "Assert/Guarantee on external suspend wait failure") \
728 \
729 product(bool, TraceSuspendWaitFailures, false, \
730 "Trace external suspend wait failures") \
731 \
732 product(bool, MaxFDLimit, true, \
733 "Bump the number of file descriptors to max in solaris.") \
734 \
735 notproduct(bool, LogEvents, trueInDebug, \
736 "Enable Event log") \
737 \
738 product(bool, BytecodeVerificationRemote, true, \
739 "Enables the Java bytecode verifier for remote classes") \
740 \
741 product(bool, BytecodeVerificationLocal, false, \
742 "Enables the Java bytecode verifier for local classes") \
743 \
744 develop(bool, ForceFloatExceptions, trueInDebug, \
745 "Force exceptions on FP stack under/overflow") \
746 \
747 develop(bool, SoftMatchFailure, trueInProduct, \
748 "If the DFA fails to match a node, print a message and bail out") \
749 \
750 develop(bool, VerifyStackAtCalls, false, \
751 "Verify that the stack pointer is unchanged after calls") \
752 \
753 develop(bool, TraceJavaAssertions, false, \
754 "Trace java language assertions") \
755 \
756 notproduct(bool, CheckAssertionStatusDirectives, false, \
757 "temporary - see javaClasses.cpp") \
758 \
759 notproduct(bool, PrintMallocFree, false, \
760 "Trace calls to C heap malloc/free allocation") \
761 \
762 product(bool, PrintOopAddress, false, \
763 "Always print the location of the oop") \
764 \
765 notproduct(bool, VerifyCodeCacheOften, false, \
766 "Verify compiled-code cache often") \
767 \
768 develop(bool, ZapDeadCompiledLocals, false, \
769 "Zap dead locals in compiler frames") \
770 \
771 notproduct(bool, ZapDeadLocalsOld, false, \
772 "Zap dead locals (old version, zaps all frames when " \
773 "entering the VM") \
774 \
775 notproduct(bool, CheckOopishValues, false, \
776 "Warn if value contains oop ( requires ZapDeadLocals)") \
777 \
778 develop(bool, UseMallocOnly, false, \
779 "use only malloc/free for allocation (no resource area/arena)") \
780 \
781 develop(bool, PrintMalloc, false, \
782 "print all malloc/free calls") \
783 \
784 develop(bool, PrintMallocStatistics, false, \
785 "print malloc/free statistics") \
786 \
787 develop(bool, ZapResourceArea, trueInDebug, \
788 "Zap freed resource/arena space with 0xABABABAB") \
789 \
790 notproduct(bool, ZapVMHandleArea, trueInDebug, \
791 "Zap freed VM handle space with 0xBCBCBCBC") \
792 \
793 develop(bool, ZapJNIHandleArea, trueInDebug, \
794 "Zap freed JNI handle space with 0xFEFEFEFE") \
795 \
796 notproduct(bool, ZapStackSegments, trueInDebug, \
797 "Zap allocated/freed Stack segments with 0xFADFADED") \
798 \
799 develop(bool, ZapUnusedHeapArea, trueInDebug, \
800 "Zap unused heap space with 0xBAADBABE") \
801 \
802 develop(bool, TraceZapUnusedHeapArea, false, \
803 "Trace zapping of unused heap space") \
804 \
805 develop(bool, CheckZapUnusedHeapArea, false, \
806 "Check zapping of unused heap space") \
807 \
808 develop(bool, ZapFillerObjects, trueInDebug, \
809 "Zap filler objects with 0xDEAFBABE") \
810 \
811 develop(bool, PrintVMMessages, true, \
812 "Print vm messages on console") \
813 \
814 product(bool, PrintGCApplicationConcurrentTime, false, \
815 "Print the time the application has been running") \
816 \
817 product(bool, PrintGCApplicationStoppedTime, false, \
818 "Print the time the application has been stopped") \
819 \
820 notproduct(uintx, ErrorHandlerTest, 0, \
821 "If > 0, provokes an error after VM initialization; the value" \
822 "determines which error to provoke. See test_error_handler()" \
823 "in debug.cpp.") \
824 \
825 develop(bool, Verbose, false, \
826 "Prints additional debugging information from other modes") \
827 \
828 develop(bool, PrintMiscellaneous, false, \
829 "Prints uncategorized debugging information (requires +Verbose)") \
830 \
831 develop(bool, WizardMode, false, \
832 "Prints much more debugging information") \
833 \
834 product(bool, ShowMessageBoxOnError, false, \
835 "Keep process alive on VM fatal error") \
836 \
837 product(bool, CreateMinidumpOnCrash, false, \
838 "Create minidump on VM fatal error") \
839 \
840 product_pd(bool, UseOSErrorReporting, \
841 "Let VM fatal error propagate to the OS (ie. WER on Windows)") \
842 \
843 product(bool, SuppressFatalErrorMessage, false, \
844 "Do NO Fatal Error report [Avoid deadlock]") \
845 \
846 product(ccstrlist, OnError, "", \
847 "Run user-defined commands on fatal error; see VMError.cpp " \
848 "for examples") \
849 \
850 product(ccstrlist, OnOutOfMemoryError, "", \
851 "Run user-defined commands on first java.lang.OutOfMemoryError") \
852 \
853 manageable(bool, HeapDumpBeforeFullGC, false, \
854 "Dump heap to file before any major stop-world GC") \
855 \
856 manageable(bool, HeapDumpAfterFullGC, false, \
857 "Dump heap to file after any major stop-world GC") \
858 \
859 manageable(bool, HeapDumpOnOutOfMemoryError, false, \
860 "Dump heap to file when java.lang.OutOfMemoryError is thrown") \
861 \
862 manageable(ccstr, HeapDumpPath, NULL, \
863 "When HeapDumpOnOutOfMemoryError is on, the path (filename or" \
864 "directory) of the dump file (defaults to java_pid<pid>.hprof" \
865 "in the working directory)") \
866 \
867 develop(uintx, SegmentedHeapDumpThreshold, 2*G, \
868 "Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) " \
869 "when the heap usage is larger than this") \
870 \
871 develop(uintx, HeapDumpSegmentSize, 1*G, \
872 "Approximate segment size when generating a segmented heap dump") \
873 \
874 develop(bool, BreakAtWarning, false, \
875 "Execute breakpoint upon encountering VM warning") \
876 \
877 product_pd(bool, UseVectoredExceptions, \
878 "Temp Flag - Use Vectored Exceptions rather than SEH (Windows Only)") \
879 \
880 develop(bool, TraceVMOperation, false, \
881 "Trace vm operations") \
882 \
883 develop(bool, UseFakeTimers, false, \
884 "Tells whether the VM should use system time or a fake timer") \
885 \
886 diagnostic(bool, LogCompilation, false, \
887 "Log compilation activity in detail to hotspot.log or LogFile") \
888 \
889 product(bool, PrintCompilation, false, \
890 "Print compilations") \
891 \
892 diagnostic(bool, TraceNMethodInstalls, false, \
893 "Trace nmethod intallation") \
894 \
895 diagnostic(intx, ScavengeRootsInCode, 2, \
896 "0: do not allow scavengable oops in the code cache; " \
897 "1: allow scavenging from the code cache; " \
898 "2: emit as many constants as the compiler can see") \
899 \
900 diagnostic(bool, TraceOSRBreakpoint, false, \
901 "Trace OSR Breakpoint ") \
902 \
903 diagnostic(bool, TraceCompileTriggered, false, \
904 "Trace compile triggered") \
905 \
906 diagnostic(bool, TraceTriggers, false, \
907 "Trace triggers") \
908 \
909 product(bool, AlwaysRestoreFPU, false, \
910 "Restore the FPU control word after every JNI call (expensive)") \
911 \
912 diagnostic(bool, PrintCompilation2, false, \
913 "Print additional statistics per compilation") \
914 \
915 diagnostic(bool, PrintAdapterHandlers, false, \
916 "Print code generated for i2c/c2i adapters") \
917 \
918 develop(bool, VerifyAdapterSharing, false, \
919 "Verify that the code for shared adapters is the equivalent") \
920 \
921 diagnostic(bool, PrintAssembly, false, \
922 "Print assembly code (using external disassembler.so)") \
923 \
924 diagnostic(ccstr, PrintAssemblyOptions, NULL, \
925 "Options string passed to disassembler.so") \
926 \
927 diagnostic(bool, PrintNMethods, false, \
928 "Print assembly code for nmethods when generated") \
929 \
930 diagnostic(bool, PrintNativeNMethods, false, \
931 "Print assembly code for native nmethods when generated") \
932 \
933 develop(bool, PrintDebugInfo, false, \
934 "Print debug information for all nmethods when generated") \
935 \
936 develop(bool, PrintRelocations, false, \
937 "Print relocation information for all nmethods when generated") \
938 \
939 develop(bool, PrintDependencies, false, \
940 "Print dependency information for all nmethods when generated") \
941 \
942 develop(bool, PrintExceptionHandlers, false, \
943 "Print exception handler tables for all nmethods when generated") \
944 \
945 develop(bool, InterceptOSException, false, \
946 "Starts debugger when an implicit OS (e.g., NULL) " \
947 "exception happens") \
948 \
949 notproduct(bool, PrintCodeCache, false, \
950 "Print the compiled_code cache when exiting") \
951 \
952 develop(bool, PrintCodeCache2, false, \
953 "Print detailed info on the compiled_code cache when exiting") \
954 \
955 diagnostic(bool, PrintStubCode, false, \
956 "Print generated stub code") \
957 \
958 product(bool, StackTraceInThrowable, true, \
959 "Collect backtrace in throwable when exception happens") \
960 \
961 product(bool, OmitStackTraceInFastThrow, true, \
962 "Omit backtraces for some 'hot' exceptions in optimized code") \
963 \
964 product(bool, ProfilerPrintByteCodeStatistics, false, \
965 "Prints byte code statictics when dumping profiler output") \
966 \
967 product(bool, ProfilerRecordPC, false, \
968 "Collects tick for each 16 byte interval of compiled code") \
969 \
970 product(bool, ProfileVM, false, \
971 "Profiles ticks that fall within VM (either in the VM Thread " \
972 "or VM code called through stubs)") \
973 \
974 product(bool, ProfileIntervals, false, \
975 "Prints profiles for each interval (see ProfileIntervalsTicks)") \
976 \
977 notproduct(bool, ProfilerCheckIntervals, false, \
978 "Collect and print info on spacing of profiler ticks") \
979 \
980 develop(bool, PrintJVMWarnings, false, \
981 "Prints warnings for unimplemented JVM functions") \
982 \
983 product(bool, PrintWarnings, true, \
984 "Prints JVM warnings to output stream") \
985 \
986 notproduct(uintx, WarnOnStalledSpinLock, 0, \
987 "Prints warnings for stalled SpinLocks") \
988 \
989 develop(bool, InitializeJavaLangSystem, true, \
990 "Initialize java.lang.System - turn off for individual " \
991 "method debugging") \
992 \
993 develop(bool, InitializeJavaLangString, true, \
994 "Initialize java.lang.String - turn off for individual " \
995 "method debugging") \
996 \
997 develop(bool, InitializeJavaLangExceptionsErrors, true, \
998 "Initialize various error and exception classes - turn off for " \
999 "individual method debugging") \
1000 \
1001 product(bool, RegisterFinalizersAtInit, true, \
1002 "Register finalizable objects at end of Object.<init> or " \
1003 "after allocation") \
1004 \
1005 develop(bool, RegisterReferences, true, \
1006 "Tells whether the VM should register soft/weak/final/phantom " \
1007 "references") \
1008 \
1009 develop(bool, IgnoreRewrites, false, \
1010 "Supress rewrites of bytecodes in the oopmap generator. " \
1011 "This is unsafe!") \
1012 \
1013 develop(bool, PrintCodeCacheExtension, false, \
1014 "Print extension of code cache") \
1015 \
1016 develop(bool, UsePrivilegedStack, true, \
1017 "Enable the security JVM functions") \
1018 \
1019 develop(bool, IEEEPrecision, true, \
1020 "Enables IEEE precision (for INTEL only)") \
1021 \
1022 develop(bool, ProtectionDomainVerification, true, \
1023 "Verifies protection domain before resolution in system " \
1024 "dictionary") \
1025 \
1026 product(bool, ClassUnloading, true, \
1027 "Do unloading of classes") \
1028 \
1029 diagnostic(bool, LinkWellKnownClasses, false, \
1030 "Resolve a well known class as soon as its name is seen") \
1031 \
1032 develop(bool, DisableStartThread, false, \
1033 "Disable starting of additional Java threads " \
1034 "(for debugging only)") \
1035 \
1036 develop(bool, MemProfiling, false, \
1037 "Write memory usage profiling to log file") \
1038 \
1039 notproduct(bool, PrintSystemDictionaryAtExit, false, \
1040 "Prints the system dictionary at exit") \
1041 \
1042 diagnostic(bool, UnsyncloadClass, false, \
1043 "Unstable: VM calls loadClass unsynchronized. Custom " \
1044 "class loader must call VM synchronized for findClass " \
1045 "and defineClass.") \
1046 \
1047 product(bool, AlwaysLockClassLoader, false, \
1048 "Require the VM to acquire the class loader lock before calling " \
1049 "loadClass() even for class loaders registering " \
1050 "as parallel capable") \
1051 \
1052 product(bool, AllowParallelDefineClass, false, \
1053 "Allow parallel defineClass requests for class loaders " \
1054 "registering as parallel capable") \
1055 \
1056 product(bool, MustCallLoadClassInternal, false, \
1057 "Call loadClassInternal() rather than loadClass()") \
1058 \
1059 product_pd(bool, DontYieldALot, \
1060 "Throw away obvious excess yield calls (for SOLARIS only)") \
1061 \
1062 product_pd(bool, ConvertSleepToYield, \
1063 "Converts sleep(0) to thread yield " \
1064 "(may be off for SOLARIS to improve GUI)") \
1065 \
1066 product(bool, ConvertYieldToSleep, false, \
1067 "Converts yield to a sleep of MinSleepInterval to simulate Win32 "\
1068 "behavior (SOLARIS only)") \
1069 \
1070 product(bool, UseBoundThreads, true, \
1071 "Bind user level threads to kernel threads (for SOLARIS only)") \
1072 \
1073 develop(bool, UseDetachedThreads, true, \
1074 "Use detached threads that are recycled upon termination " \
1075 "(for SOLARIS only)") \
1076 \
1077 product(bool, UseLWPSynchronization, true, \
1078 "Use LWP-based instead of libthread-based synchronization " \
1079 "(SPARC only)") \
1080 \
1081 product(ccstr, SyncKnobs, NULL, \
1082 "(Unstable) Various monitor synchronization tunables") \
1083 \
1084 product(intx, EmitSync, 0, \
1085 "(Unsafe,Unstable) " \
1086 " Controls emission of inline sync fast-path code") \
1087 \
1088 product(intx, AlwaysInflate, 0, "(Unstable) Force inflation") \
1089 \
1090 product(intx, MonitorBound, 0, "Bound Monitor population") \
1091 \
1092 product(bool, MonitorInUseLists, false, "Track Monitors for Deflation") \
1093 \
1094 product(intx, Atomics, 0, \
1095 "(Unsafe,Unstable) Diagnostic - Controls emission of atomics") \
1096 \
1097 product(intx, FenceInstruction, 0, \
1098 "(Unsafe,Unstable) Experimental") \
1099 \
1100 product(intx, SyncFlags, 0, "(Unsafe,Unstable) Experimental Sync flags" ) \
1101 \
1102 product(intx, SyncVerbose, 0, "(Unstable)" ) \
1103 \
1104 product(intx, ClearFPUAtPark, 0, "(Unsafe,Unstable)" ) \
1105 \
1106 product(intx, hashCode, 0, \
1107 "(Unstable) select hashCode generation algorithm" ) \
1108 \
1109 product(intx, WorkAroundNPTLTimedWaitHang, 1, \
1110 "(Unstable, Linux-specific)" \
1111 " avoid NPTL-FUTEX hang pthread_cond_timedwait" ) \
1112 \
1113 product(bool, FilterSpuriousWakeups, true, \
1114 "Prevent spurious or premature wakeups from object.wait " \
1115 "(Solaris only)") \
1116 \
1117 product(intx, NativeMonitorTimeout, -1, "(Unstable)" ) \
1118 product(intx, NativeMonitorFlags, 0, "(Unstable)" ) \
1119 product(intx, NativeMonitorSpinLimit, 20, "(Unstable)" ) \
1120 \
1121 develop(bool, UsePthreads, false, \
1122 "Use pthread-based instead of libthread-based synchronization " \
1123 "(SPARC only)") \
1124 \
1125 product(bool, AdjustConcurrency, false, \
1126 "call thr_setconcurrency at thread create time to avoid " \
1127 "LWP starvation on MP systems (For Solaris Only)") \
1128 \
1129 develop(bool, UpdateHotSpotCompilerFileOnError, true, \
1130 "Should the system attempt to update the compiler file when " \
1131 "an error occurs?") \
1132 \
1133 product(bool, ReduceSignalUsage, false, \
1134 "Reduce the use of OS signals in Java and/or the VM") \
1135 \
1136 notproduct(bool, ValidateMarkSweep, false, \
1137 "Do extra validation during MarkSweep collection") \
1138 \
1139 notproduct(bool, RecordMarkSweepCompaction, false, \
1140 "Enable GC-to-GC recording and querying of compaction during " \
1141 "MarkSweep") \
1142 \
1143 develop_pd(bool, ShareVtableStubs, \
1144 "Share vtable stubs (smaller code but worse branch prediction") \
1145 \
1146 develop(bool, LoadLineNumberTables, true, \
1147 "Tells whether the class file parser loads line number tables") \
1148 \
1149 develop(bool, LoadLocalVariableTables, true, \
1150 "Tells whether the class file parser loads local variable tables")\
1151 \
1152 develop(bool, LoadLocalVariableTypeTables, true, \
1153 "Tells whether the class file parser loads local variable type tables")\
1154 \
1155 product(bool, AllowUserSignalHandlers, false, \
1156 "Do not complain if the application installs signal handlers " \
1157 "(Solaris & Linux only)") \
1158 \
1159 product(bool, UseSignalChaining, true, \
1160 "Use signal-chaining to invoke signal handlers installed " \
1161 "by the application (Solaris & Linux only)") \
1162 \
1163 product(bool, UseAltSigs, false, \
1164 "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \
1165 "internal signals (Solaris only)") \
1166 \
1167 product(bool, UseSpinning, false, \
1168 "Use spinning in monitor inflation and before entry") \
1169 \
1170 product(bool, PreSpinYield, false, \
1171 "Yield before inner spinning loop") \
1172 \
1173 product(bool, PostSpinYield, true, \
1174 "Yield after inner spinning loop") \
1175 \
1176 product(bool, AllowJNIEnvProxy, false, \
1177 "Allow JNIEnv proxies for jdbx") \
1178 \
1179 product(bool, JNIDetachReleasesMonitors, true, \
1180 "JNI DetachCurrentThread releases monitors owned by thread") \
1181 \
1182 product(bool, RestoreMXCSROnJNICalls, false, \
1183 "Restore MXCSR when returning from JNI calls") \
1184 \
1185 product(bool, CheckJNICalls, false, \
1186 "Verify all arguments to JNI calls") \
1187 \
1188 product(bool, UseFastJNIAccessors, true, \
1189 "Use optimized versions of Get<Primitive>Field") \
1190 \
1191 product(bool, EagerXrunInit, false, \
1192 "Eagerly initialize -Xrun libraries; allows startup profiling, " \
1193 " but not all -Xrun libraries may support the state of the VM at this time") \
1194 \
1195 product(bool, PreserveAllAnnotations, false, \
1196 "Preserve RuntimeInvisibleAnnotations as well as RuntimeVisibleAnnotations") \
1197 \
1198 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \
1199 "Number of OutOfMemoryErrors preallocated with backtrace") \
1200 \
1201 product(bool, LazyBootClassLoader, true, \
1202 "Enable/disable lazy opening of boot class path entries") \
1203 \
1204 diagnostic(bool, UseIncDec, true, \
1205 "Use INC, DEC instructions on x86") \
1206 \
1207 product(bool, UseNewLongLShift, false, \
1208 "Use optimized bitwise shift left") \
1209 \
1210 product(bool, UseStoreImmI16, true, \
1211 "Use store immediate 16-bits value instruction on x86") \
1212 \
1213 product(bool, UseAddressNop, false, \
1214 "Use '0F 1F [addr]' NOP instructions on x86 cpus") \
1215 \
1216 product(bool, UseXmmLoadAndClearUpper, true, \
1217 "Load low part of XMM register and clear upper part") \
1218 \
1219 product(bool, UseXmmRegToRegMoveAll, false, \
1220 "Copy all XMM register bits when moving value between registers") \
1221 \
1222 product(bool, UseXmmI2D, false, \
1223 "Use SSE2 CVTDQ2PD instruction to convert Integer to Double") \
1224 \
1225 product(bool, UseXmmI2F, false, \
1226 "Use SSE2 CVTDQ2PS instruction to convert Integer to Float") \
1227 \
1228 product(bool, UseXMMForArrayCopy, false, \
1229 "Use SSE2 MOVQ instruction for Arraycopy") \
1230 \
1231 product(bool, UseUnalignedLoadStores, false, \
1232 "Use SSE2 MOVDQU instruction for Arraycopy") \
1233 \
1234 product(bool, UseCBCond, false, \
1235 "Use compare and branch instruction on SPARC") \
1236 \
1237 product(intx, FieldsAllocationStyle, 1, \
1238 "0 - type based with oops first, 1 - with oops last, " \
1239 "2 - oops in super and sub classes are together") \
1240 \
1241 product(bool, CompactFields, true, \
1242 "Allocate nonstatic fields in gaps between previous fields") \
1243 \
1244 notproduct(bool, PrintCompactFieldsSavings, false, \
1245 "Print how many words were saved with CompactFields") \
1246 \
1247 product(bool, UseBiasedLocking, true, \
1248 "Enable biased locking in JVM") \
1249 \
1250 product(intx, BiasedLockingStartupDelay, 4000, \
1251 "Number of milliseconds to wait before enabling biased locking") \
1252 \
1253 diagnostic(bool, PrintBiasedLockingStatistics, false, \
1254 "Print statistics of biased locking in JVM") \
1255 \
1256 product(intx, BiasedLockingBulkRebiasThreshold, 20, \
1257 "Threshold of number of revocations per type to try to " \
1258 "rebias all objects in the heap of that type") \
1259 \
1260 product(intx, BiasedLockingBulkRevokeThreshold, 40, \
1261 "Threshold of number of revocations per type to permanently " \
1262 "revoke biases of all objects in the heap of that type") \
1263 \
1264 product(intx, BiasedLockingDecayTime, 25000, \
1265 "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \
1266 "type after previous bulk rebias") \
1267 \
1268 develop(bool, JavaObjectsInPerm, false, \
1269 "controls whether Classes and interned Strings are allocated" \
1270 "in perm. This purely intended to allow debugging issues" \
1271 "in production.") \
1272 \
1273 /* tracing */ \
1274 \
1275 notproduct(bool, TraceRuntimeCalls, false, \
1276 "Trace run-time calls") \
1277 \
1278 develop(bool, TraceJNICalls, false, \
1279 "Trace JNI calls") \
1280 \
1281 notproduct(bool, TraceJVMCalls, false, \
1282 "Trace JVM calls") \
1283 \
1284 product(ccstr, TraceJVMTI, NULL, \
1285 "Trace flags for JVMTI functions and events") \
1286 \
1287 /* This option can change an EMCP method into an obsolete method. */ \
1288 /* This can affect tests that except specific methods to be EMCP. */ \
1289 /* This option should be used with caution. */ \
1290 product(bool, StressLdcRewrite, false, \
1291 "Force ldc -> ldc_w rewrite during RedefineClasses") \
1292 \
1293 product(intx, TraceRedefineClasses, 0, \
1294 "Trace level for JVMTI RedefineClasses") \
1295 \
1296 develop(bool, StressMethodComparator, false, \
1297 "run the MethodComparator on all loaded methods") \
1298 \
1299 /* change to false by default sometime after Mustang */ \
1300 product(bool, VerifyMergedCPBytecodes, true, \
1301 "Verify bytecodes after RedefineClasses constant pool merging") \
1302 \
1303 develop(bool, TraceJNIHandleAllocation, false, \
1304 "Trace allocation/deallocation of JNI handle blocks") \
1305 \
1306 develop(bool, TraceThreadEvents, false, \
1307 "Trace all thread events") \
1308 \
1309 develop(bool, TraceBytecodes, false, \
1310 "Trace bytecode execution") \
1311 \
1312 develop(bool, TraceClassInitialization, false, \
1313 "Trace class initialization") \
1314 \
1315 develop(bool, TraceExceptions, false, \
1316 "Trace exceptions") \
1317 \
1318 develop(bool, TraceICs, false, \
1319 "Trace inline cache changes") \
1320 \
1321 notproduct(bool, TraceInvocationCounterOverflow, false, \
1322 "Trace method invocation counter overflow") \
1323 \
1324 develop(bool, TraceInlineCacheClearing, false, \
1325 "Trace clearing of inline caches in nmethods") \
1326 \
1327 develop(bool, TraceDependencies, false, \
1328 "Trace dependencies") \
1329 \
1330 develop(bool, VerifyDependencies, trueInDebug, \
1331 "Exercise and verify the compilation dependency mechanism") \
1332 \
1333 develop(bool, TraceNewOopMapGeneration, false, \
1334 "Trace OopMapGeneration") \
1335 \
1336 develop(bool, TraceNewOopMapGenerationDetailed, false, \
1337 "Trace OopMapGeneration: print detailed cell states") \
1338 \
1339 develop(bool, TimeOopMap, false, \
1340 "Time calls to GenerateOopMap::compute_map() in sum") \
1341 \
1342 develop(bool, TimeOopMap2, false, \
1343 "Time calls to GenerateOopMap::compute_map() individually") \
1344 \
1345 develop(bool, TraceMonitorMismatch, false, \
1346 "Trace monitor matching failures during OopMapGeneration") \
1347 \
1348 develop(bool, TraceOopMapRewrites, false, \
1349 "Trace rewritting of method oops during oop map generation") \
1350 \
1351 develop(bool, TraceSafepoint, false, \
1352 "Trace safepoint operations") \
1353 \
1354 develop(bool, TraceICBuffer, false, \
1355 "Trace usage of IC buffer") \
1356 \
1357 develop(bool, TraceCompiledIC, false, \
1358 "Trace changes of compiled IC") \
1359 \
1360 notproduct(bool, TraceZapDeadLocals, false, \
1361 "Trace zapping dead locals") \
1362 \
1363 develop(bool, TraceStartupTime, false, \
1364 "Trace setup time") \
1365 \
1366 product(ccstr, HPILibPath, NULL, \
1367 "Specify alternate path to HPI library") \
1368 \
1369 develop(bool, TraceProtectionDomainVerification, false, \
1370 "Trace protection domain verifcation") \
1371 \
1372 develop(bool, TraceClearedExceptions, false, \
1373 "Prints when an exception is forcibly cleared") \
1374 \
1375 product(bool, TraceClassResolution, false, \
1376 "Trace all constant pool resolutions (for debugging)") \
1377 \
1378 product(bool, TraceBiasedLocking, false, \
1379 "Trace biased locking in JVM") \
1380 \
1381 product(bool, TraceMonitorInflation, false, \
1382 "Trace monitor inflation in JVM") \
1383 \
1384 /* assembler */ \
1385 product(bool, Use486InstrsOnly, false, \
1386 "Use 80486 Compliant instruction subset") \
1387 \
1388 /* gc */ \
1389 \
1390 product(bool, UseSerialGC, false, \
1391 "Use the serial garbage collector") \
1392 \
1393 product(bool, UseG1GC, false, \
1394 "Use the Garbage-First garbage collector") \
1395 \
1396 product(bool, UseParallelGC, false, \
1397 "Use the Parallel Scavenge garbage collector") \
1398 \
1399 product(bool, UseParallelOldGC, false, \
1400 "Use the Parallel Old garbage collector") \
1401 \
1402 product(uintx, HeapMaximumCompactionInterval, 20, \
1403 "How often should we maximally compact the heap (not allowing " \
1404 "any dead space)") \
1405 \
1406 product(uintx, HeapFirstMaximumCompactionCount, 3, \
1407 "The collection count for the first maximum compaction") \
1408 \
1409 product(bool, UseMaximumCompactionOnSystemGC, true, \
1410 "In the Parallel Old garbage collector maximum compaction for " \
1411 "a system GC") \
1412 \
1413 product(uintx, ParallelOldDeadWoodLimiterMean, 50, \
1414 "The mean used by the par compact dead wood" \
1415 "limiter (a number between 0-100).") \
1416 \
1417 product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \
1418 "The standard deviation used by the par compact dead wood" \
1419 "limiter (a number between 0-100).") \
1420 \
1421 product(uintx, ParallelGCThreads, 0, \
1422 "Number of parallel threads parallel gc will use") \
1423 \
1424 product(bool, UseDynamicNumberOfGCThreads, false, \
1425 "Dynamically choose the number of parallel threads " \
1426 "parallel gc will use") \
1427 \
1428 diagnostic(bool, ForceDynamicNumberOfGCThreads, false, \
1429 "Force dynamic selection of the number of" \
1430 "parallel threads parallel gc will use to aid debugging") \
1431 \
1432 product(uintx, HeapSizePerGCThread, ScaleForWordSize(64*M), \
1433 "Size of heap (bytes) per GC thread used in calculating the " \
1434 "number of GC threads") \
1435 \
1436 product(bool, TraceDynamicGCThreads, false, \
1437 "Trace the dynamic GC thread usage") \
1438 \
1439 develop(bool, ParallelOldGCSplitALot, false, \
1440 "Provoke splitting (copying data from a young gen space to" \
1441 "multiple destination spaces)") \
1442 \
1443 develop(uintx, ParallelOldGCSplitInterval, 3, \
1444 "How often to provoke splitting a young gen space") \
1445 \
1446 develop(bool, TraceRegionTasksQueuing, false, \
1447 "Trace the queuing of the region tasks") \
1448 \
1449 product(uintx, ConcGCThreads, 0, \
1450 "Number of threads concurrent gc will use") \
1451 \
1452 product(uintx, YoungPLABSize, 4096, \
1453 "Size of young gen promotion labs (in HeapWords)") \
1454 \
1455 product(uintx, OldPLABSize, 1024, \
1456 "Size of old gen promotion labs (in HeapWords)") \
1457 \
1458 product(uintx, GCTaskTimeStampEntries, 200, \
1459 "Number of time stamp entries per gc worker thread") \
1460 \
1461 product(bool, AlwaysTenure, false, \
1462 "Always tenure objects in eden. (ParallelGC only)") \
1463 \
1464 product(bool, NeverTenure, false, \
1465 "Never tenure objects in eden, May tenure on overflow " \
1466 "(ParallelGC only)") \
1467 \
1468 product(bool, ScavengeBeforeFullGC, true, \
1469 "Scavenge youngest generation before each full GC, " \
1470 "used with UseParallelGC") \
1471 \
1472 develop(bool, ScavengeWithObjectsInToSpace, false, \
1473 "Allow scavenges to occur when to_space contains objects.") \
1474 \
1475 product(bool, UseConcMarkSweepGC, false, \
1476 "Use Concurrent Mark-Sweep GC in the old generation") \
1477 \
1478 product(bool, ExplicitGCInvokesConcurrent, false, \
1479 "A System.gc() request invokes a concurrent collection;" \
1480 " (effective only when UseConcMarkSweepGC)") \
1481 \
1482 product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \
1483 "A System.gc() request invokes a concurrent collection and " \
1484 "also unloads classes during such a concurrent gc cycle " \
1485 "(effective only when UseConcMarkSweepGC)") \
1486 \
1487 product(bool, GCLockerInvokesConcurrent, false, \
1488 "The exit of a JNI CS necessitating a scavenge also" \
1489 " kicks off a bkgrd concurrent collection") \
1490 \
1491 product(uintx, GCLockerEdenExpansionPercent, 5, \
1492 "How much the GC can expand the eden by while the GC locker " \
1493 "is active (as a percentage)") \
1494 \
1495 develop(bool, UseCMSAdaptiveFreeLists, true, \
1496 "Use Adaptive Free Lists in the CMS generation") \
1497 \
1498 develop(bool, UseAsyncConcMarkSweepGC, true, \
1499 "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\
1500 \
1501 develop(bool, RotateCMSCollectionTypes, false, \
1502 "Rotate the CMS collections among concurrent and STW") \
1503 \
1504 product(bool, UseCMSBestFit, true, \
1505 "Use CMS best fit allocation strategy") \
1506 \
1507 product(bool, UseCMSCollectionPassing, true, \
1508 "Use passing of collection from background to foreground") \
1509 \
1510 product(bool, UseParNewGC, false, \
1511 "Use parallel threads in the new generation.") \
1512 \
1513 product(bool, ParallelGCVerbose, false, \
1514 "Verbose output for parallel GC.") \
1515 \
1516 product(intx, ParallelGCBufferWastePct, 10, \
1517 "wasted fraction of parallel allocation buffer.") \
1518 \
1519 diagnostic(bool, ParallelGCRetainPLAB, false, \
1520 "Retain parallel allocation buffers across scavenges; " \
1521 " -- disabled because this currently conflicts with " \
1522 " parallel card scanning under certain conditions ") \
1523 \
1524 product(intx, TargetPLABWastePct, 10, \
1525 "target wasted space in last buffer as pct of overall allocation")\
1526 \
1527 product(uintx, PLABWeight, 75, \
1528 "Percentage (0-100) used to weight the current sample when" \
1529 "computing exponentially decaying average for ResizePLAB.") \
1530 \
1531 product(bool, ResizePLAB, true, \
1532 "Dynamically resize (survivor space) promotion labs") \
1533 \
1534 product(bool, PrintPLAB, false, \
1535 "Print (survivor space) promotion labs sizing decisions") \
1536 \
1537 product(intx, ParGCArrayScanChunk, 50, \
1538 "Scan a subset and push remainder, if array is bigger than this") \
1539 \
1540 product(bool, ParGCUseLocalOverflow, false, \
1541 "Instead of a global overflow list, use local overflow stacks") \
1542 \
1543 product(bool, ParGCTrimOverflow, true, \
1544 "Eagerly trim the local overflow lists (when ParGCUseLocalOverflow") \
1545 \
1546 notproduct(bool, ParGCWorkQueueOverflowALot, false, \
1547 "Whether we should simulate work queue overflow in ParNew") \
1548 \
1549 notproduct(uintx, ParGCWorkQueueOverflowInterval, 1000, \
1550 "An `interval' counter that determines how frequently " \
1551 "we simulate overflow; a smaller number increases frequency") \
1552 \
1553 product(uintx, ParGCDesiredObjsFromOverflowList, 20, \
1554 "The desired number of objects to claim from the overflow list") \
1555 \
1556 diagnostic(intx, ParGCStridesPerThread, 2, \
1557 "The number of strides per worker thread that we divide up the " \
1558 "card table scanning work into") \
1559 \
1560 diagnostic(intx, ParGCCardsPerStrideChunk, 256, \
1561 "The number of cards in each chunk of the parallel chunks used " \
1562 "during card table scanning") \
1563 \
1564 product(uintx, CMSParPromoteBlocksToClaim, 16, \
1565 "Number of blocks to attempt to claim when refilling CMS LAB for "\
1566 "parallel GC.") \
1567 \
1568 product(uintx, OldPLABWeight, 50, \
1569 "Percentage (0-100) used to weight the current sample when" \
1570 "computing exponentially decaying average for resizing CMSParPromoteBlocksToClaim.") \
1571 \
1572 product(bool, ResizeOldPLAB, true, \
1573 "Dynamically resize (old gen) promotion labs") \
1574 \
1575 product(bool, PrintOldPLAB, false, \
1576 "Print (old gen) promotion labs sizing decisions") \
1577 \
1578 product(uintx, CMSOldPLABMin, 16, \
1579 "Min size of CMS gen promotion lab caches per worker per blksize")\
1580 \
1581 product(uintx, CMSOldPLABMax, 1024, \
1582 "Max size of CMS gen promotion lab caches per worker per blksize")\
1583 \
1584 product(uintx, CMSOldPLABNumRefills, 4, \
1585 "Nominal number of refills of CMS gen promotion lab cache" \
1586 " per worker per block size") \
1587 \
1588 product(bool, CMSOldPLABResizeQuicker, false, \
1589 "Whether to react on-the-fly during a scavenge to a sudden" \
1590 " change in block demand rate") \
1591 \
1592 product(uintx, CMSOldPLABToleranceFactor, 4, \
1593 "The tolerance of the phase-change detector for on-the-fly" \
1594 " PLAB resizing during a scavenge") \
1595 \
1596 product(uintx, CMSOldPLABReactivityFactor, 2, \
1597 "The gain in the feedback loop for on-the-fly PLAB resizing" \
1598 " during a scavenge") \
1599 \
1600 product(uintx, CMSOldPLABReactivityCeiling, 10, \
1601 "The clamping of the gain in the feedback loop for on-the-fly" \
1602 " PLAB resizing during a scavenge") \
1603 \
1604 product(bool, AlwaysPreTouch, false, \
1605 "It forces all freshly committed pages to be pre-touched.") \
1606 \
1607 product_pd(intx, CMSYoungGenPerWorker, \
1608 "The maximum size of young gen chosen by default per GC worker " \
1609 "thread available") \
1610 \
1611 product(bool, GCOverheadReporting, false, \
1612 "Enables the GC overhead reporting facility") \
1613 \
1614 product(intx, GCOverheadReportingPeriodMS, 100, \
1615 "Reporting period for conc GC overhead reporting, in ms ") \
1616 \
1617 product(bool, CMSIncrementalMode, false, \
1618 "Whether CMS GC should operate in \"incremental\" mode") \
1619 \
1620 product(uintx, CMSIncrementalDutyCycle, 10, \
1621 "CMS incremental mode duty cycle (a percentage, 0-100). If" \
1622 "CMSIncrementalPacing is enabled, then this is just the initial" \
1623 "value") \
1624 \
1625 product(bool, CMSIncrementalPacing, true, \
1626 "Whether the CMS incremental mode duty cycle should be " \
1627 "automatically adjusted") \
1628 \
1629 product(uintx, CMSIncrementalDutyCycleMin, 0, \
1630 "Lower bound on the duty cycle when CMSIncrementalPacing is " \
1631 "enabled (a percentage, 0-100)") \
1632 \
1633 product(uintx, CMSIncrementalSafetyFactor, 10, \
1634 "Percentage (0-100) used to add conservatism when computing the " \
1635 "duty cycle") \
1636 \
1637 product(uintx, CMSIncrementalOffset, 0, \
1638 "Percentage (0-100) by which the CMS incremental mode duty cycle" \
1639 " is shifted to the right within the period between young GCs") \
1640 \
1641 product(uintx, CMSExpAvgFactor, 50, \
1642 "Percentage (0-100) used to weight the current sample when" \
1643 "computing exponential averages for CMS statistics.") \
1644 \
1645 product(uintx, CMS_FLSWeight, 75, \
1646 "Percentage (0-100) used to weight the current sample when" \
1647 "computing exponentially decating averages for CMS FLS statistics.") \
1648 \
1649 product(uintx, CMS_FLSPadding, 1, \
1650 "The multiple of deviation from mean to use for buffering" \
1651 "against volatility in free list demand.") \
1652 \
1653 product(uintx, FLSCoalescePolicy, 2, \
1654 "CMS: Aggression level for coalescing, increasing from 0 to 4") \
1655 \
1656 product(bool, FLSAlwaysCoalesceLarge, false, \
1657 "CMS: Larger free blocks are always available for coalescing") \
1658 \
1659 product(double, FLSLargestBlockCoalesceProximity, 0.99, \
1660 "CMS: the smaller the percentage the greater the coalition force")\
1661 \
1662 product(double, CMSSmallCoalSurplusPercent, 1.05, \
1663 "CMS: the factor by which to inflate estimated demand of small" \
1664 " block sizes to prevent coalescing with an adjoining block") \
1665 \
1666 product(double, CMSLargeCoalSurplusPercent, 0.95, \
1667 "CMS: the factor by which to inflate estimated demand of large" \
1668 " block sizes to prevent coalescing with an adjoining block") \
1669 \
1670 product(double, CMSSmallSplitSurplusPercent, 1.10, \
1671 "CMS: the factor by which to inflate estimated demand of small" \
1672 " block sizes to prevent splitting to supply demand for smaller" \
1673 " blocks") \
1674 \
1675 product(double, CMSLargeSplitSurplusPercent, 1.00, \
1676 "CMS: the factor by which to inflate estimated demand of large" \
1677 " block sizes to prevent splitting to supply demand for smaller" \
1678 " blocks") \
1679 \
1680 product(bool, CMSExtrapolateSweep, false, \
1681 "CMS: cushion for block demand during sweep") \
1682 \
1683 product(uintx, CMS_SweepWeight, 75, \
1684 "Percentage (0-100) used to weight the current sample when " \
1685 "computing exponentially decaying average for inter-sweep " \
1686 "duration") \
1687 \
1688 product(uintx, CMS_SweepPadding, 1, \
1689 "The multiple of deviation from mean to use for buffering " \
1690 "against volatility in inter-sweep duration.") \
1691 \
1692 product(uintx, CMS_SweepTimerThresholdMillis, 10, \
1693 "Skip block flux-rate sampling for an epoch unless inter-sweep " \
1694 "duration exceeds this threhold in milliseconds") \
1695 \
1696 develop(bool, CMSTraceIncrementalMode, false, \
1697 "Trace CMS incremental mode") \
1698 \
1699 develop(bool, CMSTraceIncrementalPacing, false, \
1700 "Trace CMS incremental mode pacing computation") \
1701 \
1702 develop(bool, CMSTraceThreadState, false, \
1703 "Trace the CMS thread state (enable the trace_state() method)") \
1704 \
1705 product(bool, CMSClassUnloadingEnabled, false, \
1706 "Whether class unloading enabled when using CMS GC") \
1707 \
1708 product(uintx, CMSClassUnloadingMaxInterval, 0, \
1709 "When CMS class unloading is enabled, the maximum CMS cycle count"\
1710 " for which classes may not be unloaded") \
1711 \
1712 product(bool, CMSCompactWhenClearAllSoftRefs, true, \
1713 "Compact when asked to collect CMS gen with clear_all_soft_refs") \
1714 \
1715 product(bool, UseCMSCompactAtFullCollection, true, \
1716 "Use mark sweep compact at full collections") \
1717 \
1718 product(uintx, CMSFullGCsBeforeCompaction, 0, \
1719 "Number of CMS full collection done before compaction if > 0") \
1720 \
1721 develop(intx, CMSDictionaryChoice, 0, \
1722 "Use BinaryTreeDictionary as default in the CMS generation") \
1723 \
1724 product(uintx, CMSIndexedFreeListReplenish, 4, \
1725 "Replenish an indexed free list with this number of chunks") \
1726 \
1727 product(bool, CMSReplenishIntermediate, true, \
1728 "Replenish all intermediate free-list caches") \
1729 \
1730 product(bool, CMSSplitIndexedFreeListBlocks, true, \
1731 "When satisfying batched demand, split blocks from the " \
1732 "IndexedFreeList whose size is a multiple of requested size") \
1733 \
1734 product(bool, CMSLoopWarn, false, \
1735 "Warn in case of excessive CMS looping") \
1736 \
1737 develop(bool, CMSOverflowEarlyRestoration, false, \
1738 "Whether preserved marks should be restored early") \
1739 \
1740 product(uintx, MarkStackSize, NOT_LP64(32*K) LP64_ONLY(4*M), \
1741 "Size of marking stack") \
1742 \
1743 product(uintx, MarkStackSizeMax, NOT_LP64(4*M) LP64_ONLY(512*M), \
1744 "Max size of marking stack") \
1745 \
1746 notproduct(bool, CMSMarkStackOverflowALot, false, \
1747 "Whether we should simulate frequent marking stack / work queue" \
1748 " overflow") \
1749 \
1750 notproduct(uintx, CMSMarkStackOverflowInterval, 1000, \
1751 "An `interval' counter that determines how frequently" \
1752 " we simulate overflow; a smaller number increases frequency") \
1753 \
1754 product(uintx, CMSMaxAbortablePrecleanLoops, 0, \
1755 "(Temporary, subject to experimentation)" \
1756 "Maximum number of abortable preclean iterations, if > 0") \
1757 \
1758 product(intx, CMSMaxAbortablePrecleanTime, 5000, \
1759 "(Temporary, subject to experimentation)" \
1760 "Maximum time in abortable preclean in ms") \
1761 \
1762 product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \
1763 "(Temporary, subject to experimentation)" \
1764 "Nominal minimum work per abortable preclean iteration") \
1765 \
1766 manageable(intx, CMSAbortablePrecleanWaitMillis, 100, \
1767 "(Temporary, subject to experimentation)" \
1768 " Time that we sleep between iterations when not given" \
1769 " enough work per iteration") \
1770 \
1771 product(uintx, CMSRescanMultiple, 32, \
1772 "Size (in cards) of CMS parallel rescan task") \
1773 \
1774 product(uintx, CMSConcMarkMultiple, 32, \
1775 "Size (in cards) of CMS concurrent MT marking task") \
1776 \
1777 product(uintx, CMSRevisitStackSize, 1*M, \
1778 "Size of CMS KlassKlass revisit stack") \
1779 \
1780 product(bool, CMSAbortSemantics, false, \
1781 "Whether abort-on-overflow semantics is implemented") \
1782 \
1783 product(bool, CMSParallelRemarkEnabled, true, \
1784 "Whether parallel remark enabled (only if ParNewGC)") \
1785 \
1786 product(bool, CMSParallelSurvivorRemarkEnabled, true, \
1787 "Whether parallel remark of survivor space" \
1788 " enabled (effective only if CMSParallelRemarkEnabled)") \
1789 \
1790 product(bool, CMSPLABRecordAlways, true, \
1791 "Whether to always record survivor space PLAB bdries" \
1792 " (effective only if CMSParallelSurvivorRemarkEnabled)") \
1793 \
1794 product(bool, CMSConcurrentMTEnabled, true, \
1795 "Whether multi-threaded concurrent work enabled (if ParNewGC)") \
1796 \
1797 product(bool, CMSPermGenPrecleaningEnabled, true, \
1798 "Whether concurrent precleaning enabled in perm gen" \
1799 " (effective only when CMSPrecleaningEnabled is true)") \
1800 \
1801 product(bool, CMSPrecleaningEnabled, true, \
1802 "Whether concurrent precleaning enabled") \
1803 \
1804 product(uintx, CMSPrecleanIter, 3, \
1805 "Maximum number of precleaning iteration passes") \
1806 \
1807 product(uintx, CMSPrecleanNumerator, 2, \
1808 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \
1809 " ratio") \
1810 \
1811 product(uintx, CMSPrecleanDenominator, 3, \
1812 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \
1813 " ratio") \
1814 \
1815 product(bool, CMSPrecleanRefLists1, true, \
1816 "Preclean ref lists during (initial) preclean phase") \
1817 \
1818 product(bool, CMSPrecleanRefLists2, false, \
1819 "Preclean ref lists during abortable preclean phase") \
1820 \
1821 product(bool, CMSPrecleanSurvivors1, false, \
1822 "Preclean survivors during (initial) preclean phase") \
1823 \
1824 product(bool, CMSPrecleanSurvivors2, true, \
1825 "Preclean survivors during abortable preclean phase") \
1826 \
1827 product(uintx, CMSPrecleanThreshold, 1000, \
1828 "Don't re-iterate if #dirty cards less than this") \
1829 \
1830 product(bool, CMSCleanOnEnter, true, \
1831 "Clean-on-enter optimization for reducing number of dirty cards") \
1832 \
1833 product(uintx, CMSRemarkVerifyVariant, 1, \
1834 "Choose variant (1,2) of verification following remark") \
1835 \
1836 product(uintx, CMSScheduleRemarkEdenSizeThreshold, 2*M, \
1837 "If Eden used is below this value, don't try to schedule remark") \
1838 \
1839 product(uintx, CMSScheduleRemarkEdenPenetration, 50, \
1840 "The Eden occupancy % at which to try and schedule remark pause") \
1841 \
1842 product(uintx, CMSScheduleRemarkSamplingRatio, 5, \
1843 "Start sampling Eden top at least before yg occupancy reaches" \
1844 " 1/<ratio> of the size at which we plan to schedule remark") \
1845 \
1846 product(uintx, CMSSamplingGrain, 16*K, \
1847 "The minimum distance between eden samples for CMS (see above)") \
1848 \
1849 product(bool, CMSScavengeBeforeRemark, false, \
1850 "Attempt scavenge before the CMS remark step") \
1851 \
1852 develop(bool, CMSTraceSweeper, false, \
1853 "Trace some actions of the CMS sweeper") \
1854 \
1855 product(uintx, CMSWorkQueueDrainThreshold, 10, \
1856 "Don't drain below this size per parallel worker/thief") \
1857 \
1858 manageable(intx, CMSWaitDuration, 2000, \
1859 "Time in milliseconds that CMS thread waits for young GC") \
1860 \
1861 product(bool, CMSYield, true, \
1862 "Yield between steps of concurrent mark & sweep") \
1863 \
1864 product(uintx, CMSBitMapYieldQuantum, 10*M, \
1865 "Bitmap operations should process at most this many bits" \
1866 "between yields") \
1867 \
1868 product(bool, CMSDumpAtPromotionFailure, false, \
1869 "Dump useful information about the state of the CMS old " \
1870 " generation upon a promotion failure.") \
1871 \
1872 product(bool, CMSPrintChunksInDump, false, \
1873 "In a dump enabled by CMSDumpAtPromotionFailure, include " \
1874 " more detailed information about the free chunks.") \
1875 \
1876 product(bool, CMSPrintObjectsInDump, false, \
1877 "In a dump enabled by CMSDumpAtPromotionFailure, include " \
1878 " more detailed information about the allocated objects.") \
1879 \
1880 diagnostic(bool, FLSVerifyAllHeapReferences, false, \
1881 "Verify that all refs across the FLS boundary " \
1882 " are to valid objects") \
1883 \
1884 diagnostic(bool, FLSVerifyLists, false, \
1885 "Do lots of (expensive) FreeListSpace verification") \
1886 \
1887 diagnostic(bool, FLSVerifyIndexTable, false, \
1888 "Do lots of (expensive) FLS index table verification") \
1889 \
1890 develop(bool, FLSVerifyDictionary, false, \
1891 "Do lots of (expensive) FLS dictionary verification") \
1892 \
1893 develop(bool, VerifyBlockOffsetArray, false, \
1894 "Do (expensive!) block offset array verification") \
1895 \
1896 diagnostic(bool, BlockOffsetArrayUseUnallocatedBlock, false, \
1897 "Maintain _unallocated_block in BlockOffsetArray" \
1898 " (currently applicable only to CMS collector)") \
1899 \
1900 develop(bool, TraceCMSState, false, \
1901 "Trace the state of the CMS collection") \
1902 \
1903 product(intx, RefDiscoveryPolicy, 0, \
1904 "Whether reference-based(0) or referent-based(1)") \
1905 \
1906 product(bool, ParallelRefProcEnabled, false, \
1907 "Enable parallel reference processing whenever possible") \
1908 \
1909 product(bool, ParallelRefProcBalancingEnabled, true, \
1910 "Enable balancing of reference processing queues") \
1911 \
1912 product(intx, CMSTriggerRatio, 80, \
1913 "Percentage of MinHeapFreeRatio in CMS generation that is " \
1914 "allocated before a CMS collection cycle commences") \
1915 \
1916 product(intx, CMSTriggerPermRatio, 80, \
1917 "Percentage of MinHeapFreeRatio in the CMS perm generation that " \
1918 "is allocated before a CMS collection cycle commences, that " \
1919 "also collects the perm generation") \
1920 \
1921 product(uintx, CMSBootstrapOccupancy, 50, \
1922 "Percentage CMS generation occupancy at which to " \
1923 "initiate CMS collection for bootstrapping collection stats") \
1924 \
1925 product(intx, CMSInitiatingOccupancyFraction, -1, \
1926 "Percentage CMS generation occupancy to start a CMS collection " \
1927 "cycle. A negative value means that CMSTriggerRatio is used") \
1928 \
1929 product(uintx, InitiatingHeapOccupancyPercent, 45, \
1930 "Percentage of the (entire) heap occupancy to start a " \
1931 "concurrent GC cycle. It us used by GCs that trigger a " \
1932 "concurrent GC cycle based on the occupancy of the entire heap, " \
1933 "not just one of the generations (e.g., G1). A value of 0 " \
1934 "denotes 'do constant GC cycles'.") \
1935 \
1936 product(intx, CMSInitiatingPermOccupancyFraction, -1, \
1937 "Percentage CMS perm generation occupancy to start a " \
1938 "CMScollection cycle. A negative value means that " \
1939 "CMSTriggerPermRatio is used") \
1940 \
1941 product(bool, UseCMSInitiatingOccupancyOnly, false, \
1942 "Only use occupancy as a crierion for starting a CMS collection") \
1943 \
1944 product(intx, CMSIsTooFullPercentage, 98, \
1945 "An absolute ceiling above which CMS will always consider the " \
1946 "perm gen ripe for collection") \
1947 \
1948 develop(bool, CMSTestInFreeList, false, \
1949 "Check if the coalesced range is already in the " \
1950 "free lists as claimed") \
1951 \
1952 notproduct(bool, CMSVerifyReturnedBytes, false, \
1953 "Check that all the garbage collected was returned to the " \
1954 "free lists.") \
1955 \
1956 notproduct(bool, ScavengeALot, false, \
1957 "Force scavenge at every Nth exit from the runtime system " \
1958 "(N=ScavengeALotInterval)") \
1959 \
1960 develop(bool, FullGCALot, false, \
1961 "Force full gc at every Nth exit from the runtime system " \
1962 "(N=FullGCALotInterval)") \
1963 \
1964 notproduct(bool, GCALotAtAllSafepoints, false, \
1965 "Enforce ScavengeALot/GCALot at all potential safepoints") \
1966 \
1967 product(bool, PrintPromotionFailure, false, \
1968 "Print additional diagnostic information following " \
1969 " promotion failure") \
1970 \
1971 notproduct(bool, PromotionFailureALot, false, \
1972 "Use promotion failure handling on every youngest generation " \
1973 "collection") \
1974 \
1975 develop(uintx, PromotionFailureALotCount, 1000, \
1976 "Number of promotion failures occurring at ParGCAllocBuffer" \
1977 "refill attempts (ParNew) or promotion attempts " \
1978 "(other young collectors) ") \
1979 \
1980 develop(uintx, PromotionFailureALotInterval, 5, \
1981 "Total collections between promotion failures alot") \
1982 \
1983 experimental(intx, WorkStealingSleepMillis, 1, \
1984 "Sleep time when sleep is used for yields") \
1985 \
1986 experimental(uintx, WorkStealingYieldsBeforeSleep, 5000, \
1987 "Number of yields before a sleep is done during workstealing") \
1988 \
1989 experimental(uintx, WorkStealingHardSpins, 4096, \
1990 "Number of iterations in a spin loop between checks on " \
1991 "time out of hard spin") \
1992 \
1993 experimental(uintx, WorkStealingSpinToYieldRatio, 10, \
1994 "Ratio of hard spins to calls to yield") \
1995 \
1996 product(uintx, PreserveMarkStackSize, 1024, \
1997 "Size for stack used in promotion failure handling") \
1998 \
1999 develop(uintx, ObjArrayMarkingStride, 512, \
2000 "Number of ObjArray elements to push onto the marking stack" \
2001 "before pushing a continuation entry") \
2002 \
2003 notproduct(bool, ExecuteInternalVMTests, false, \
2004 "Enable execution of internal VM tests.") \
2005 \
2006 product_pd(bool, UseTLAB, "Use thread-local object allocation") \
2007 \
2008 product_pd(bool, ResizeTLAB, \
2009 "Dynamically resize tlab size for threads") \
2010 \
2011 product(bool, ZeroTLAB, false, \
2012 "Zero out the newly created TLAB") \
2013 \
2014 product(bool, FastTLABRefill, true, \
2015 "Use fast TLAB refill code") \
2016 \
2017 product(bool, PrintTLAB, false, \
2018 "Print various TLAB related information") \
2019 \
2020 product(bool, TLABStats, true, \
2021 "Print various TLAB related information") \
2022 \
2023 product(bool, UseBlockZeroing, false, \
2024 "Use special cpu instructions for block zeroing") \
2025 \
2026 product(intx, BlockZeroingLowLimit, 2048, \
2027 "Minimum size in bytes when block zeroing will be used") \
2028 \
2029 product(bool, UseBlockCopy, false, \
2030 "Use special cpu instructions for block copy") \
2031 \
2032 product(intx, BlockCopyLowLimit, 2048, \
2033 "Minimum size in bytes when block copy will be used") \
2034 \
2035 product(bool, PrintRevisitStats, false, \
2036 "Print revisit (klass and MDO) stack related information") \
2037 \
2038 EMBEDDED_ONLY(product(bool, LowMemoryProtection, true, \
2039 "Enable LowMemoryProtection")) \
2040 \
2041 product_pd(bool, NeverActAsServerClassMachine, \
2042 "Never act like a server-class machine") \
2043 \
2044 product(bool, AlwaysActAsServerClassMachine, false, \
2045 "Always act like a server-class machine") \
2046 \
2047 product_pd(uint64_t, MaxRAM, \
2048 "Real memory size (in bytes) used to set maximum heap size") \
2049 \
2050 product(uintx, ErgoHeapSizeLimit, 0, \
2051 "Maximum ergonomically set heap size (in bytes); zero means use " \
2052 "MaxRAM / MaxRAMFraction") \
2053 \
2054 product(uintx, MaxRAMFraction, 4, \
2055 "Maximum fraction (1/n) of real memory used for maximum heap " \
2056 "size") \
2057 \
2058 product(uintx, DefaultMaxRAMFraction, 4, \
2059 "Maximum fraction (1/n) of real memory used for maximum heap " \
2060 "size; deprecated: to be renamed to MaxRAMFraction") \
2061 \
2062 product(uintx, MinRAMFraction, 2, \
2063 "Minimum fraction (1/n) of real memory used for maxmimum heap " \
2064 "size on systems with small physical memory size") \
2065 \
2066 product(uintx, InitialRAMFraction, 64, \
2067 "Fraction (1/n) of real memory used for initial heap size") \
2068 \
2069 product(bool, UseAutoGCSelectPolicy, false, \
2070 "Use automatic collection selection policy") \
2071 \
2072 product(uintx, AutoGCSelectPauseMillis, 5000, \
2073 "Automatic GC selection pause threshhold in ms") \
2074 \
2075 product(bool, UseAdaptiveSizePolicy, true, \
2076 "Use adaptive generation sizing policies") \
2077 \
2078 product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \
2079 "Use adaptive survivor sizing policies") \
2080 \
2081 product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \
2082 "Use adaptive young-old sizing policies at minor collections") \
2083 \
2084 product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \
2085 "Use adaptive young-old sizing policies at major collections") \
2086 \
2087 product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \
2088 "Use statistics from System.GC for adaptive size policy") \
2089 \
2090 product(bool, UseAdaptiveGCBoundary, false, \
2091 "Allow young-old boundary to move") \
2092 \
2093 develop(bool, TraceAdaptiveGCBoundary, false, \
2094 "Trace young-old boundary moves") \
2095 \
2096 develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \
2097 "Resize the virtual spaces of the young or old generations") \
2098 \
2099 product(uintx, AdaptiveSizeThroughPutPolicy, 0, \
2100 "Policy for changeing generation size for throughput goals") \
2101 \
2102 product(uintx, AdaptiveSizePausePolicy, 0, \
2103 "Policy for changing generation size for pause goals") \
2104 \
2105 develop(bool, PSAdjustTenuredGenForMinorPause, false, \
2106 "Adjust tenured generation to achive a minor pause goal") \
2107 \
2108 develop(bool, PSAdjustYoungGenForMajorPause, false, \
2109 "Adjust young generation to achive a major pause goal") \
2110 \
2111 product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \
2112 "Number of steps where heuristics is used before data is used") \
2113 \
2114 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \
2115 "Number of collections before the adaptive sizing is started") \
2116 \
2117 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \
2118 "Collecton interval for printing information; zero => never") \
2119 \
2120 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \
2121 "Use adaptive minimum footprint as a goal") \
2122 \
2123 product(uintx, AdaptiveSizePolicyWeight, 10, \
2124 "Weight given to exponential resizing, between 0 and 100") \
2125 \
2126 product(uintx, AdaptiveTimeWeight, 25, \
2127 "Weight given to time in adaptive policy, between 0 and 100") \
2128 \
2129 product(uintx, PausePadding, 1, \
2130 "How much buffer to keep for pause time") \
2131 \
2132 product(uintx, PromotedPadding, 3, \
2133 "How much buffer to keep for promotion failure") \
2134 \
2135 product(uintx, SurvivorPadding, 3, \
2136 "How much buffer to keep for survivor overflow") \
2137 \
2138 product(uintx, AdaptivePermSizeWeight, 20, \
2139 "Weight for perm gen exponential resizing, between 0 and 100") \
2140 \
2141 product(uintx, PermGenPadding, 3, \
2142 "How much buffer to keep for perm gen sizing") \
2143 \
2144 product(uintx, ThresholdTolerance, 10, \
2145 "Allowed collection cost difference between generations") \
2146 \
2147 product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \
2148 "If collection costs are within margin, reduce both by full " \
2149 "delta") \
2150 \
2151 product(uintx, YoungGenerationSizeIncrement, 20, \
2152 "Adaptive size percentage change in young generation") \
2153 \
2154 product(uintx, YoungGenerationSizeSupplement, 80, \
2155 "Supplement to YoungedGenerationSizeIncrement used at startup") \
2156 \
2157 product(uintx, YoungGenerationSizeSupplementDecay, 8, \
2158 "Decay factor to YoungedGenerationSizeSupplement") \
2159 \
2160 product(uintx, TenuredGenerationSizeIncrement, 20, \
2161 "Adaptive size percentage change in tenured generation") \
2162 \
2163 product(uintx, TenuredGenerationSizeSupplement, 80, \
2164 "Supplement to TenuredGenerationSizeIncrement used at startup") \
2165 \
2166 product(uintx, TenuredGenerationSizeSupplementDecay, 2, \
2167 "Decay factor to TenuredGenerationSizeIncrement") \
2168 \
2169 product(uintx, MaxGCPauseMillis, max_uintx, \
2170 "Adaptive size policy maximum GC pause time goal in msec, " \
2171 "or (G1 Only) the max. GC time per MMU time slice") \
2172 \
2173 product(uintx, GCPauseIntervalMillis, 0, \
2174 "Time slice for MMU specification") \
2175 \
2176 product(uintx, MaxGCMinorPauseMillis, max_uintx, \
2177 "Adaptive size policy maximum GC minor pause time goal in msec") \
2178 \
2179 product(uintx, GCTimeRatio, 99, \
2180 "Adaptive size policy application time to GC time ratio") \
2181 \
2182 product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \
2183 "Adaptive size scale down factor for shrinking") \
2184 \
2185 product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \
2186 "Adaptive size decays the major cost for long major intervals") \
2187 \
2188 product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \
2189 "Time scale over which major costs decay") \
2190 \
2191 product(uintx, MinSurvivorRatio, 3, \
2192 "Minimum ratio of young generation/survivor space size") \
2193 \
2194 product(uintx, InitialSurvivorRatio, 8, \
2195 "Initial ratio of eden/survivor space size") \
2196 \
2197 product(uintx, BaseFootPrintEstimate, 256*M, \
2198 "Estimate of footprint other than Java Heap") \
2199 \
2200 product(bool, UseGCOverheadLimit, true, \
2201 "Use policy to limit of proportion of time spent in GC " \
2202 "before an OutOfMemory error is thrown") \
2203 \
2204 product(uintx, GCTimeLimit, 98, \
2205 "Limit of proportion of time spent in GC before an OutOfMemory" \
2206 "error is thrown (used with GCHeapFreeLimit)") \
2207 \
2208 product(uintx, GCHeapFreeLimit, 2, \
2209 "Minimum percentage of free space after a full GC before an " \
2210 "OutOfMemoryError is thrown (used with GCTimeLimit)") \
2211 \
2212 develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \
2213 "Number of consecutive collections before gc time limit fires") \
2214 \
2215 product(bool, PrintAdaptiveSizePolicy, false, \
2216 "Print information about AdaptiveSizePolicy") \
2217 \
2218 product(intx, PrefetchCopyIntervalInBytes, -1, \
2219 "How far ahead to prefetch destination area (<= 0 means off)") \
2220 \
2221 product(intx, PrefetchScanIntervalInBytes, -1, \
2222 "How far ahead to prefetch scan area (<= 0 means off)") \
2223 \
2224 product(intx, PrefetchFieldsAhead, -1, \
2225 "How many fields ahead to prefetch in oop scan (<= 0 means off)") \
2226 \
2227 develop(bool, UsePrefetchQueue, true, \
2228 "Use the prefetch queue during PS promotion") \
2229 \
2230 diagnostic(bool, VerifyBeforeExit, trueInDebug, \
2231 "Verify system before exiting") \
2232 \
2233 diagnostic(bool, VerifyBeforeGC, false, \
2234 "Verify memory system before GC") \
2235 \
2236 diagnostic(bool, VerifyAfterGC, false, \
2237 "Verify memory system after GC") \
2238 \
2239 diagnostic(bool, VerifyDuringGC, false, \
2240 "Verify memory system during GC (between phases)") \
2241 \
2242 diagnostic(bool, GCParallelVerificationEnabled, true, \
2243 "Enable parallel memory system verification") \
2244 \
2245 diagnostic(bool, DeferInitialCardMark, false, \
2246 "When +ReduceInitialCardMarks, explicitly defer any that " \
2247 "may arise from new_pre_store_barrier") \
2248 \
2249 diagnostic(bool, VerifyRememberedSets, false, \
2250 "Verify GC remembered sets") \
2251 \
2252 diagnostic(bool, VerifyObjectStartArray, true, \
2253 "Verify GC object start array if verify before/after") \
2254 \
2255 product(bool, DisableExplicitGC, false, \
2256 "Tells whether calling System.gc() does a full GC") \
2257 \
2258 notproduct(bool, CheckMemoryInitialization, false, \
2259 "Checks memory initialization") \
2260 \
2261 product(bool, CollectGen0First, false, \
2262 "Collect youngest generation before each full GC") \
2263 \
2264 diagnostic(bool, BindCMSThreadToCPU, false, \
2265 "Bind CMS Thread to CPU if possible") \
2266 \
2267 diagnostic(uintx, CPUForCMSThread, 0, \
2268 "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \
2269 \
2270 product(bool, BindGCTaskThreadsToCPUs, false, \
2271 "Bind GCTaskThreads to CPUs if possible") \
2272 \
2273 product(bool, UseGCTaskAffinity, false, \
2274 "Use worker affinity when asking for GCTasks") \
2275 \
2276 product(uintx, ProcessDistributionStride, 4, \
2277 "Stride through processors when distributing processes") \
2278 \
2279 product(uintx, CMSCoordinatorYieldSleepCount, 10, \
2280 "number of times the coordinator GC thread will sleep while " \
2281 "yielding before giving up and resuming GC") \
2282 \
2283 product(uintx, CMSYieldSleepCount, 0, \
2284 "number of times a GC thread (minus the coordinator) " \
2285 "will sleep while yielding before giving up and resuming GC") \
2286 \
2287 /* gc tracing */ \
2288 manageable(bool, PrintGC, false, \
2289 "Print message at garbage collect") \
2290 \
2291 manageable(bool, PrintGCDetails, false, \
2292 "Print more details at garbage collect") \
2293 \
2294 manageable(bool, PrintGCDateStamps, false, \
2295 "Print date stamps at garbage collect") \
2296 \
2297 manageable(bool, PrintGCTimeStamps, false, \
2298 "Print timestamps at garbage collect") \
2299 \
2300 product(bool, PrintGCTaskTimeStamps, false, \
2301 "Print timestamps for individual gc worker thread tasks") \
2302 \
2303 develop(intx, ConcGCYieldTimeout, 0, \
2304 "If non-zero, assert that GC threads yield within this # of ms.") \
2305 \
2306 notproduct(bool, TraceMarkSweep, false, \
2307 "Trace mark sweep") \
2308 \
2309 product(bool, PrintReferenceGC, false, \
2310 "Print times spent handling reference objects during GC " \
2311 " (enabled only when PrintGCDetails)") \
2312 \
2313 develop(bool, TraceReferenceGC, false, \
2314 "Trace handling of soft/weak/final/phantom references") \
2315 \
2316 develop(bool, TraceFinalizerRegistration, false, \
2317 "Trace registration of final references") \
2318 \
2319 notproduct(bool, TraceScavenge, false, \
2320 "Trace scavenge") \
2321 \
2322 product_rw(bool, TraceClassLoading, false, \
2323 "Trace all classes loaded") \
2324 \
2325 product(bool, TraceClassLoadingPreorder, false, \
2326 "Trace all classes loaded in order referenced (not loaded)") \
2327 \
2328 product_rw(bool, TraceClassUnloading, false, \
2329 "Trace unloading of classes") \
2330 \
2331 product_rw(bool, TraceLoaderConstraints, false, \
2332 "Trace loader constraints") \
2333 \
2334 product(bool, TraceGen0Time, false, \
2335 "Trace accumulated time for Gen 0 collection") \
2336 \
2337 product(bool, TraceGen1Time, false, \
2338 "Trace accumulated time for Gen 1 collection") \
2339 \
2340 product(bool, PrintTenuringDistribution, false, \
2341 "Print tenuring age information") \
2342 \
2343 product_rw(bool, PrintHeapAtGC, false, \
2344 "Print heap layout before and after each GC") \
2345 \
2346 product_rw(bool, PrintHeapAtGCExtended, false, \
2347 "Prints extended information about the layout of the heap " \
2348 "when -XX:+PrintHeapAtGC is set") \
2349 \
2350 product(bool, PrintHeapAtSIGBREAK, true, \
2351 "Print heap layout in response to SIGBREAK") \
2352 \
2353 manageable(bool, PrintClassHistogramBeforeFullGC, false, \
2354 "Print a class histogram before any major stop-world GC") \
2355 \
2356 manageable(bool, PrintClassHistogramAfterFullGC, false, \
2357 "Print a class histogram after any major stop-world GC") \
2358 \
2359 manageable(bool, PrintClassHistogram, false, \
2360 "Print a histogram of class instances") \
2361 \
2362 develop(bool, TraceWorkGang, false, \
2363 "Trace activities of work gangs") \
2364 \
2365 product(bool, TraceParallelOldGCTasks, false, \
2366 "Trace multithreaded GC activity") \
2367 \
2368 develop(bool, TraceBlockOffsetTable, false, \
2369 "Print BlockOffsetTable maps") \
2370 \
2371 develop(bool, TraceCardTableModRefBS, false, \
2372 "Print CardTableModRefBS maps") \
2373 \
2374 develop(bool, TraceGCTaskManager, false, \
2375 "Trace actions of the GC task manager") \
2376 \
2377 develop(bool, TraceGCTaskQueue, false, \
2378 "Trace actions of the GC task queues") \
2379 \
2380 diagnostic(bool, TraceGCTaskThread, false, \
2381 "Trace actions of the GC task threads") \
2382 \
2383 product(bool, PrintParallelOldGCPhaseTimes, false, \
2384 "Print the time taken by each parallel old gc phase." \
2385 "PrintGCDetails must also be enabled.") \
2386 \
2387 develop(bool, TraceParallelOldGCMarkingPhase, false, \
2388 "Trace parallel old gc marking phase") \
2389 \
2390 develop(bool, TraceParallelOldGCSummaryPhase, false, \
2391 "Trace parallel old gc summary phase") \
2392 \
2393 develop(bool, TraceParallelOldGCCompactionPhase, false, \
2394 "Trace parallel old gc compaction phase") \
2395 \
2396 develop(bool, TraceParallelOldGCDensePrefix, false, \
2397 "Trace parallel old gc dense prefix computation") \
2398 \
2399 develop(bool, IgnoreLibthreadGPFault, false, \
2400 "Suppress workaround for libthread GP fault") \
2401 \
2402 product(bool, PrintJNIGCStalls, false, \
2403 "Print diagnostic message when GC is stalled" \
2404 "by JNI critical section") \
2405 \
2406 /* GC log rotation setting */ \
2407 \
2408 product(bool, UseGCLogFileRotation, false, \
2409 "Prevent large gclog file for long running app. " \
2410 "Requires -Xloggc:<filename>") \
2411 \
2412 product(uintx, NumberOfGCLogFiles, 0, \
2413 "Number of gclog files in rotation, " \
2414 "Default: 0, no rotation") \
2415 \
2416 product(uintx, GCLogFileSize, 0, \
2417 "GC log file size, Default: 0 bytes, no rotation " \
2418 "Only valid with UseGCLogFileRotation") \
2419 \
2420 /* JVMTI heap profiling */ \
2421 \
2422 diagnostic(bool, TraceJVMTIObjectTagging, false, \
2423 "Trace JVMTI object tagging calls") \
2424 \
2425 diagnostic(bool, VerifyBeforeIteration, false, \
2426 "Verify memory system before JVMTI iteration") \
2427 \
2428 /* compiler interface */ \
2429 \
2430 develop(bool, CIPrintCompilerName, false, \
2431 "when CIPrint is active, print the name of the active compiler") \
2432 \
2433 develop(bool, CIPrintCompileQueue, false, \
2434 "display the contents of the compile queue whenever a " \
2435 "compilation is enqueued") \
2436 \
2437 develop(bool, CIPrintRequests, false, \
2438 "display every request for compilation") \
2439 \
2440 product(bool, CITime, false, \
2441 "collect timing information for compilation") \
2442 \
2443 develop(bool, CITimeEach, false, \
2444 "display timing information after each successful compilation") \
2445 \
2446 develop(bool, CICountOSR, true, \
2447 "use a separate counter when assigning ids to osr compilations") \
2448 \
2449 develop(bool, CICompileNatives, true, \
2450 "compile native methods if supported by the compiler") \
2451 \
2452 develop_pd(bool, CICompileOSR, \
2453 "compile on stack replacement methods if supported by the " \
2454 "compiler") \
2455 \
2456 develop(bool, CIPrintMethodCodes, false, \
2457 "print method bytecodes of the compiled code") \
2458 \
2459 develop(bool, CIPrintTypeFlow, false, \
2460 "print the results of ciTypeFlow analysis") \
2461 \
2462 develop(bool, CITraceTypeFlow, false, \
2463 "detailed per-bytecode tracing of ciTypeFlow analysis") \
2464 \
2465 develop(intx, CICloneLoopTestLimit, 100, \
2466 "size limit for blocks heuristically cloned in ciTypeFlow") \
2467 \
2468 develop(intx, OSROnlyBCI, -1, \
2469 "OSR only at this bci. Negative values mean exclude that bci") \
2470 \
2471 /* temp diagnostics */ \
2472 \
2473 diagnostic(bool, TraceRedundantCompiles, false, \
2474 "Have compile broker print when a request already in the queue is"\
2475 " requested again") \
2476 \
2477 diagnostic(bool, InitialCompileFast, false, \
2478 "Initial compile at CompLevel_fast_compile") \
2479 \
2480 diagnostic(bool, InitialCompileReallyFast, false, \
2481 "Initial compile at CompLevel_really_fast_compile (no profile)") \
2482 \
2483 diagnostic(bool, FullProfileOnReInterpret, true, \
2484 "On re-interpret unc-trap compile next at CompLevel_fast_compile")\
2485 \
2486 /* compiler */ \
2487 \
2488 product(intx, CICompilerCount, CI_COMPILER_COUNT, \
2489 "Number of compiler threads to run") \
2490 \
2491 product(intx, CompilationPolicyChoice, 0, \
2492 "which compilation policy (0/1)") \
2493 \
2494 develop(bool, UseStackBanging, true, \
2495 "use stack banging for stack overflow checks (required for " \
2496 "proper StackOverflow handling; disable only to measure cost " \
2497 "of stackbanging)") \
2498 \
2499 develop(bool, Use24BitFPMode, true, \
2500 "Set 24-bit FPU mode on a per-compile basis ") \
2501 \
2502 develop(bool, Use24BitFP, true, \
2503 "use FP instructions that produce 24-bit precise results") \
2504 \
2505 develop(bool, UseStrictFP, true, \
2506 "use strict fp if modifier strictfp is set") \
2507 \
2508 develop(bool, GenerateSynchronizationCode, true, \
2509 "generate locking/unlocking code for synchronized methods and " \
2510 "monitors") \
2511 \
2512 develop(bool, GenerateCompilerNullChecks, true, \
2513 "Generate explicit null checks for loads/stores/calls") \
2514 \
2515 develop(bool, GenerateRangeChecks, true, \
2516 "Generate range checks for array accesses") \
2517 \
2518 develop_pd(bool, ImplicitNullChecks, \
2519 "generate code for implicit null checks") \
2520 \
2521 product(bool, PrintSafepointStatistics, false, \
2522 "print statistics about safepoint synchronization") \
2523 \
2524 product(intx, PrintSafepointStatisticsCount, 300, \
2525 "total number of safepoint statistics collected " \
2526 "before printing them out") \
2527 \
2528 product(intx, PrintSafepointStatisticsTimeout, -1, \
2529 "print safepoint statistics only when safepoint takes" \
2530 " more than PrintSafepointSatisticsTimeout in millis") \
2531 \
2532 product(bool, TraceSafepointCleanupTime, false, \
2533 "print the break down of clean up tasks performed during" \
2534 " safepoint") \
2535 \
2536 develop(bool, InlineAccessors, true, \
2537 "inline accessor methods (get/set)") \
2538 \
2539 product(bool, Inline, true, \
2540 "enable inlining") \
2541 \
2542 product(bool, ClipInlining, true, \
2543 "clip inlining if aggregate method exceeds DesiredMethodLimit") \
2544 \
2545 develop(bool, UseCHA, true, \
2546 "enable CHA") \
2547 \
2548 product(bool, UseTypeProfile, true, \
2549 "Check interpreter profile for historically monomorphic calls") \
2550 \
2551 product(intx, TypeProfileMajorReceiverPercent, 90, \
2552 "% of major receiver type to all profiled receivers") \
2553 \
2554 notproduct(bool, TimeCompiler, false, \
2555 "time the compiler") \
2556 \
2557 notproduct(bool, TimeCompiler2, false, \
2558 "detailed time the compiler (requires +TimeCompiler)") \
2559 \
2560 diagnostic(bool, PrintInlining, false, \
2561 "prints inlining optimizations") \
2562 \
2563 diagnostic(bool, PrintIntrinsics, false, \
2564 "prints attempted and successful inlining of intrinsics") \
2565 \
2566 product(bool, UseCountLeadingZerosInstruction, false, \
2567 "Use count leading zeros instruction") \
2568 \
2569 product(bool, UsePopCountInstruction, false, \
2570 "Use population count instruction") \
2571 \
2572 diagnostic(ccstrlist, DisableIntrinsic, "", \
2573 "do not expand intrinsics whose (internal) names appear here") \
2574 \
2575 develop(bool, StressReflectiveCode, false, \
2576 "Use inexact types at allocations, etc., to test reflection") \
2577 \
2578 develop(bool, EagerInitialization, false, \
2579 "Eagerly initialize classes if possible") \
2580 \
2581 develop(bool, TraceMethodReplacement, false, \
2582 "Print when methods are replaced do to recompilation") \
2583 \
2584 develop(bool, PrintMethodFlushing, false, \
2585 "print the nmethods being flushed") \
2586 \
2587 notproduct(bool, LogMultipleMutexLocking, false, \
2588 "log locking and unlocking of mutexes (only if multiple locks " \
2589 "are held)") \
2590 \
2591 develop(bool, UseRelocIndex, false, \
2592 "use an index to speed random access to relocations") \
2593 \
2594 develop(bool, StressCodeBuffers, false, \
2595 "Exercise code buffer expansion and other rare state changes") \
2596 \
2597 diagnostic(bool, DebugNonSafepoints, trueInDebug, \
2598 "Generate extra debugging info for non-safepoints in nmethods") \
2599 \
2600 diagnostic(bool, DebugInlinedCalls, true, \
2601 "If false, restricts profiled locations to the root method only") \
2602 \
2603 product(bool, PrintVMOptions, false, \
2604 "Print flags that appeared on the command line") \
2605 \
2606 product(bool, IgnoreUnrecognizedVMOptions, false, \
2607 "Ignore unrecognized VM options") \
2608 \
2609 product(bool, PrintCommandLineFlags, false, \
2610 "Print flags specified on command line or set by ergonomics") \
2611 \
2612 product(bool, PrintFlagsInitial, false, \
2613 "Print all VM flags before argument processing and exit VM") \
2614 \
2615 product(bool, PrintFlagsFinal, false, \
2616 "Print all VM flags after argument and ergonomic processing") \
2617 \
2618 notproduct(bool, PrintFlagsWithComments, false, \
2619 "Print all VM flags with default values and descriptions and exit")\
2620 \
2621 diagnostic(bool, SerializeVMOutput, true, \
2622 "Use a mutex to serialize output to tty and hotspot.log") \
2623 \
2624 diagnostic(bool, DisplayVMOutput, true, \
2625 "Display all VM output on the tty, independently of LogVMOutput") \
2626 \
2627 diagnostic(bool, LogVMOutput, trueInDebug, \
2628 "Save VM output to hotspot.log, or to LogFile") \
2629 \
2630 diagnostic(ccstr, LogFile, NULL, \
2631 "If LogVMOutput is on, save VM output to this file [hotspot.log]") \
2632 \
2633 product(ccstr, ErrorFile, NULL, \
2634 "If an error occurs, save the error data to this file " \
2635 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \
2636 \
2637 product(bool, DisplayVMOutputToStderr, false, \
2638 "If DisplayVMOutput is true, display all VM output to stderr") \
2639 \
2640 product(bool, DisplayVMOutputToStdout, false, \
2641 "If DisplayVMOutput is true, display all VM output to stdout") \
2642 \
2643 product(bool, UseHeavyMonitors, false, \
2644 "use heavyweight instead of lightweight Java monitors") \
2645 \
2646 notproduct(bool, PrintSymbolTableSizeHistogram, false, \
2647 "print histogram of the symbol table") \
2648 \
2649 notproduct(bool, ExitVMOnVerifyError, false, \
2650 "standard exit from VM if bytecode verify error " \
2651 "(only in debug mode)") \
2652 \
2653 notproduct(ccstr, AbortVMOnException, NULL, \
2654 "Call fatal if this exception is thrown. Example: " \
2655 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \
2656 \
2657 notproduct(ccstr, AbortVMOnExceptionMessage, NULL, \
2658 "Call fatal if the exception pointed by AbortVMOnException " \
2659 "has this message.") \
2660 \
2661 develop(bool, DebugVtables, false, \
2662 "add debugging code to vtable dispatch") \
2663 \
2664 develop(bool, PrintVtables, false, \
2665 "print vtables when printing klass") \
2666 \
2667 notproduct(bool, PrintVtableStats, false, \
2668 "print vtables stats at end of run") \
2669 \
2670 develop(bool, TraceCreateZombies, false, \
2671 "trace creation of zombie nmethods") \
2672 \
2673 notproduct(bool, IgnoreLockingAssertions, false, \
2674 "disable locking assertions (for speed)") \
2675 \
2676 notproduct(bool, VerifyLoopOptimizations, false, \
2677 "verify major loop optimizations") \
2678 \
2679 product(bool, RangeCheckElimination, true, \
2680 "Split loop iterations to eliminate range checks") \
2681 \
2682 develop_pd(bool, UncommonNullCast, \
2683 "track occurrences of null in casts; adjust compiler tactics") \
2684 \
2685 develop(bool, TypeProfileCasts, true, \
2686 "treat casts like calls for purposes of type profiling") \
2687 \
2688 develop(bool, MonomorphicArrayCheck, true, \
2689 "Uncommon-trap array store checks that require full type check") \
2690 \
2691 diagnostic(bool, ProfileDynamicTypes, true, \
2692 "do extra type profiling and use it more aggressively") \
2693 \
2694 develop(bool, DelayCompilationDuringStartup, true, \
2695 "Delay invoking the compiler until main application class is " \
2696 "loaded") \
2697 \
2698 develop(bool, CompileTheWorld, false, \
2699 "Compile all methods in all classes in bootstrap class path " \
2700 "(stress test)") \
2701 \
2702 develop(bool, CompileTheWorldPreloadClasses, true, \
2703 "Preload all classes used by a class before start loading") \
2704 \
2705 notproduct(intx, CompileTheWorldSafepointInterval, 100, \
2706 "Force a safepoint every n compiles so sweeper can keep up") \
2707 \
2708 develop(bool, TraceIterativeGVN, false, \
2709 "Print progress during Iterative Global Value Numbering") \
2710 \
2711 develop(bool, FillDelaySlots, true, \
2712 "Fill delay slots (on SPARC only)") \
2713 \
2714 develop(bool, VerifyIterativeGVN, false, \
2715 "Verify Def-Use modifications during sparse Iterative Global " \
2716 "Value Numbering") \
2717 \
2718 notproduct(bool, TracePhaseCCP, false, \
2719 "Print progress during Conditional Constant Propagation") \
2720 \
2721 develop(bool, TimeLivenessAnalysis, false, \
2722 "Time computation of bytecode liveness analysis") \
2723 \
2724 develop(bool, TraceLivenessGen, false, \
2725 "Trace the generation of liveness analysis information") \
2726 \
2727 notproduct(bool, TraceLivenessQuery, false, \
2728 "Trace queries of liveness analysis information") \
2729 \
2730 notproduct(bool, CollectIndexSetStatistics, false, \
2731 "Collect information about IndexSets") \
2732 \
2733 develop(bool, PrintDominators, false, \
2734 "Print out dominator trees for GVN") \
2735 \
2736 develop(bool, UseLoopSafepoints, true, \
2737 "Generate Safepoint nodes in every loop") \
2738 \
2739 notproduct(bool, TraceCISCSpill, false, \
2740 "Trace allocators use of cisc spillable instructions") \
2741 \
2742 notproduct(bool, TraceSpilling, false, \
2743 "Trace spilling") \
2744 \
2745 product(bool, SplitIfBlocks, true, \
2746 "Clone compares and control flow through merge points to fold " \
2747 "some branches") \
2748 \
2749 develop(intx, FastAllocateSizeLimit, 128*K, \
2750 /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \
2751 "Inline allocations larger than this in doublewords must go slow")\
2752 \
2753 product(bool, AggressiveOpts, false, \
2754 "Enable aggressive optimizations - see arguments.cpp") \
2755 \
2756 product(bool, UseStringCache, false, \
2757 "Enable String cache capabilities on String.java") \
2758 \
2759 /* statistics */ \
2760 develop(bool, CountCompiledCalls, false, \
2761 "counts method invocations") \
2762 \
2763 notproduct(bool, CountRuntimeCalls, false, \
2764 "counts VM runtime calls") \
2765 \
2766 develop(bool, CountJNICalls, false, \
2767 "counts jni method invocations") \
2768 \
2769 notproduct(bool, CountJVMCalls, false, \
2770 "counts jvm method invocations") \
2771 \
2772 notproduct(bool, CountRemovableExceptions, false, \
2773 "count exceptions that could be replaced by branches due to " \
2774 "inlining") \
2775 \
2776 notproduct(bool, ICMissHistogram, false, \
2777 "produce histogram of IC misses") \
2778 \
2779 notproduct(bool, PrintClassStatistics, false, \
2780 "prints class statistics at end of run") \
2781 \
2782 notproduct(bool, PrintMethodStatistics, false, \
2783 "prints method statistics at end of run") \
2784 \
2785 /* interpreter */ \
2786 develop(bool, ClearInterpreterLocals, false, \
2787 "Always clear local variables of interpreter activations upon " \
2788 "entry") \
2789 \
2790 product_pd(bool, RewriteBytecodes, \
2791 "Allow rewriting of bytecodes (bytecodes are not immutable)") \
2792 \
2793 product_pd(bool, RewriteFrequentPairs, \
2794 "Rewrite frequently used bytecode pairs into a single bytecode") \
2795 \
2796 diagnostic(bool, PrintInterpreter, false, \
2797 "Prints the generated interpreter code") \
2798 \
2799 product(bool, UseInterpreter, true, \
2800 "Use interpreter for non-compiled methods") \
2801 \
2802 develop(bool, UseFastSignatureHandlers, true, \
2803 "Use fast signature handlers for native calls") \
2804 \
2805 develop(bool, UseV8InstrsOnly, false, \
2806 "Use SPARC-V8 Compliant instruction subset") \
2807 \
2808 product(bool, UseNiagaraInstrs, false, \
2809 "Use Niagara-efficient instruction subset") \
2810 \
2811 develop(bool, UseCASForSwap, false, \
2812 "Do not use swap instructions, but only CAS (in a loop) on SPARC")\
2813 \
2814 product(bool, UseLoopCounter, true, \
2815 "Increment invocation counter on backward branch") \
2816 \
2817 product(bool, UseFastEmptyMethods, true, \
2818 "Use fast method entry code for empty methods") \
2819 \
2820 product(bool, UseFastAccessorMethods, true, \
2821 "Use fast method entry code for accessor methods") \
2822 \
2823 product_pd(bool, UseOnStackReplacement, \
2824 "Use on stack replacement, calls runtime if invoc. counter " \
2825 "overflows in loop") \
2826 \
2827 notproduct(bool, TraceOnStackReplacement, false, \
2828 "Trace on stack replacement") \
2829 \
2830 develop(bool, PoisonOSREntry, true, \
2831 "Detect abnormal calls to OSR code") \
2832 \
2833 product_pd(bool, PreferInterpreterNativeStubs, \
2834 "Use always interpreter stubs for native methods invoked via " \
2835 "interpreter") \
2836 \
2837 develop(bool, CountBytecodes, false, \
2838 "Count number of bytecodes executed") \
2839 \
2840 develop(bool, PrintBytecodeHistogram, false, \
2841 "Print histogram of the executed bytecodes") \
2842 \
2843 develop(bool, PrintBytecodePairHistogram, false, \
2844 "Print histogram of the executed bytecode pairs") \
2845 \
2846 diagnostic(bool, PrintSignatureHandlers, false, \
2847 "Print code generated for native method signature handlers") \
2848 \
2849 develop(bool, VerifyOops, false, \
2850 "Do plausibility checks for oops") \
2851 \
2852 develop(bool, CheckUnhandledOops, false, \
2853 "Check for unhandled oops in VM code") \
2854 \
2855 develop(bool, VerifyJNIFields, trueInDebug, \
2856 "Verify jfieldIDs for instance fields") \
2857 \
2858 notproduct(bool, VerifyJNIEnvThread, false, \
2859 "Verify JNIEnv.thread == Thread::current() when entering VM " \
2860 "from JNI") \
2861 \
2862 develop(bool, VerifyFPU, false, \
2863 "Verify FPU state (check for NaN's, etc.)") \
2864 \
2865 develop(bool, VerifyThread, false, \
2866 "Watch the thread register for corruption (SPARC only)") \
2867 \
2868 develop(bool, VerifyActivationFrameSize, false, \
2869 "Verify that activation frame didn't become smaller than its " \
2870 "minimal size") \
2871 \
2872 develop(bool, TraceFrequencyInlining, false, \
2873 "Trace frequency based inlining") \
2874 \
2875 notproduct(bool, TraceTypeProfile, false, \
2876 "Trace type profile") \
2877 \
2878 develop_pd(bool, InlineIntrinsics, \
2879 "Inline intrinsics that can be statically resolved") \
2880 \
2881 product_pd(bool, ProfileInterpreter, \
2882 "Profile at the bytecode level during interpretation") \
2883 \
2884 develop_pd(bool, ProfileTraps, \
2885 "Profile deoptimization traps at the bytecode level") \
2886 \
2887 product(intx, ProfileMaturityPercentage, 20, \
2888 "number of method invocations/branches (expressed as % of " \
2889 "CompileThreshold) before using the method's profile") \
2890 \
2891 develop(bool, PrintMethodData, false, \
2892 "Print the results of +ProfileInterpreter at end of run") \
2893 \
2894 develop(bool, VerifyDataPointer, trueInDebug, \
2895 "Verify the method data pointer during interpreter profiling") \
2896 \
2897 develop(bool, VerifyCompiledCode, false, \
2898 "Include miscellaneous runtime verifications in nmethod code; " \
2899 "default off because it disturbs nmethod size heuristics") \
2900 \
2901 notproduct(bool, CrashGCForDumpingJavaThread, false, \
2902 "Manually make GC thread crash then dump java stack trace; " \
2903 "Test only") \
2904 \
2905 /* compilation */ \
2906 product(bool, UseCompiler, true, \
2907 "use compilation") \
2908 \
2909 develop(bool, TraceCompilationPolicy, false, \
2910 "Trace compilation policy") \
2911 \
2912 develop(bool, TimeCompilationPolicy, false, \
2913 "Time the compilation policy") \
2914 \
2915 product(bool, UseCounterDecay, true, \
2916 "adjust recompilation counters") \
2917 \
2918 develop(intx, CounterHalfLifeTime, 30, \
2919 "half-life time of invocation counters (in secs)") \
2920 \
2921 develop(intx, CounterDecayMinIntervalLength, 500, \
2922 "Min. ms. between invocation of CounterDecay") \
2923 \
2924 product(bool, AlwaysCompileLoopMethods, false, \
2925 "when using recompilation, never interpret methods " \
2926 "containing loops") \
2927 \
2928 product(bool, DontCompileHugeMethods, true, \
2929 "don't compile methods > HugeMethodLimit") \
2930 \
2931 /* Bytecode escape analysis estimation. */ \
2932 product(bool, EstimateArgEscape, true, \
2933 "Analyze bytecodes to estimate escape state of arguments") \
2934 \
2935 product(intx, BCEATraceLevel, 0, \
2936 "How much tracing to do of bytecode escape analysis estimates") \
2937 \
2938 product(intx, MaxBCEAEstimateLevel, 5, \
2939 "Maximum number of nested calls that are analyzed by BC EA.") \
2940 \
2941 product(intx, MaxBCEAEstimateSize, 150, \
2942 "Maximum bytecode size of a method to be analyzed by BC EA.") \
2943 \
2944 product(intx, AllocatePrefetchStyle, 1, \
2945 "0 = no prefetch, " \
2946 "1 = prefetch instructions for each allocation, " \
2947 "2 = use TLAB watermark to gate allocation prefetch, " \
2948 "3 = use BIS instruction on Sparc for allocation prefetch") \
2949 \
2950 product(intx, AllocatePrefetchDistance, -1, \
2951 "Distance to prefetch ahead of allocation pointer") \
2952 \
2953 product(intx, AllocatePrefetchLines, 3, \
2954 "Number of lines to prefetch ahead of array allocation pointer") \
2955 \
2956 product(intx, AllocateInstancePrefetchLines, 1, \
2957 "Number of lines to prefetch ahead of instance allocation pointer") \
2958 \
2959 product(intx, AllocatePrefetchStepSize, 16, \
2960 "Step size in bytes of sequential prefetch instructions") \
2961 \
2962 product(intx, AllocatePrefetchInstr, 0, \
2963 "Prefetch instruction to prefetch ahead of allocation pointer") \
2964 \
2965 product(intx, ReadPrefetchInstr, 0, \
2966 "Prefetch instruction to prefetch ahead") \
2967 \
2968 product(uintx, ArraycopySrcPrefetchDistance, 0, \
2969 "Distance to prefetch source array in arracopy") \
2970 \
2971 product(uintx, ArraycopyDstPrefetchDistance, 0, \
2972 "Distance to prefetch destination array in arracopy") \
2973 \
2974 /* deoptimization */ \
2975 develop(bool, TraceDeoptimization, false, \
2976 "Trace deoptimization") \
2977 \
2978 develop(bool, DebugDeoptimization, false, \
2979 "Tracing various information while debugging deoptimization") \
2980 \
2981 product(intx, SelfDestructTimer, 0, \
2982 "Will cause VM to terminate after a given time (in minutes) " \
2983 "(0 means off)") \
2984 \
2985 product(intx, MaxJavaStackTraceDepth, 1024, \
2986 "Max. no. of lines in the stack trace for Java exceptions " \
2987 "(0 means all)") \
2988 \
2989 NOT_EMBEDDED(diagnostic(intx, GuaranteedSafepointInterval, 1000, \
2990 "Guarantee a safepoint (at least) every so many milliseconds " \
2991 "(0 means none)")) \
2992 \
2993 EMBEDDED_ONLY(product(intx, GuaranteedSafepointInterval, 0, \
2994 "Guarantee a safepoint (at least) every so many milliseconds " \
2995 "(0 means none)")) \
2996 \
2997 product(intx, SafepointTimeoutDelay, 10000, \
2998 "Delay in milliseconds for option SafepointTimeout") \
2999 \
3000 product(intx, NmethodSweepFraction, 4, \
3001 "Number of invocations of sweeper to cover all nmethods") \
3002 \
3003 product(intx, NmethodSweepCheckInterval, 5, \
3004 "Compilers wake up every n seconds to possibly sweep nmethods") \
3005 \
3006 notproduct(bool, LogSweeper, false, \
3007 "Keep a ring buffer of sweeper activity") \
3008 \
3009 notproduct(intx, SweeperLogEntries, 1024, \
3010 "Number of records in the ring buffer of sweeper activity") \
3011 \
3012 notproduct(intx, MemProfilingInterval, 500, \
3013 "Time between each invocation of the MemProfiler") \
3014 \
3015 develop(intx, MallocCatchPtr, -1, \
3016 "Hit breakpoint when mallocing/freeing this pointer") \
3017 \
3018 notproduct(intx, AssertRepeat, 1, \
3019 "number of times to evaluate expression in assert " \
3020 "(to estimate overhead); only works with -DUSE_REPEATED_ASSERTS") \
3021 \
3022 notproduct(ccstrlist, SuppressErrorAt, "", \
3023 "List of assertions (file:line) to muzzle") \
3024 \
3025 notproduct(uintx, HandleAllocationLimit, 1024, \
3026 "Threshold for HandleMark allocation when +TraceHandleAllocation "\
3027 "is used") \
3028 \
3029 develop(uintx, TotalHandleAllocationLimit, 1024, \
3030 "Threshold for total handle allocation when " \
3031 "+TraceHandleAllocation is used") \
3032 \
3033 develop(intx, StackPrintLimit, 100, \
3034 "number of stack frames to print in VM-level stack dump") \
3035 \
3036 notproduct(intx, MaxElementPrintSize, 256, \
3037 "maximum number of elements to print") \
3038 \
3039 notproduct(intx, MaxSubklassPrintSize, 4, \
3040 "maximum number of subklasses to print when printing klass") \
3041 \
3042 product(intx, MaxInlineLevel, 9, \
3043 "maximum number of nested calls that are inlined") \
3044 \
3045 product(intx, MaxRecursiveInlineLevel, 1, \
3046 "maximum number of nested recursive calls that are inlined") \
3047 \
3048 product_pd(intx, InlineSmallCode, \
3049 "Only inline already compiled methods if their code size is " \
3050 "less than this") \
3051 \
3052 product(intx, MaxInlineSize, 35, \
3053 "maximum bytecode size of a method to be inlined") \
3054 \
3055 product_pd(intx, FreqInlineSize, \
3056 "maximum bytecode size of a frequent method to be inlined") \
3057 \
3058 product(intx, MaxTrivialSize, 6, \
3059 "maximum bytecode size of a trivial method to be inlined") \
3060 \
3061 product(intx, MinInliningThreshold, 250, \
3062 "min. invocation count a method needs to have to be inlined") \
3063 \
3064 develop(intx, AlignEntryCode, 4, \
3065 "aligns entry code to specified value (in bytes)") \
3066 \
3067 develop(intx, MethodHistogramCutoff, 100, \
3068 "cutoff value for method invoc. histogram (+CountCalls)") \
3069 \
3070 develop(intx, ProfilerNumberOfInterpretedMethods, 25, \
3071 "# of interpreted methods to show in profile") \
3072 \
3073 develop(intx, ProfilerNumberOfCompiledMethods, 25, \
3074 "# of compiled methods to show in profile") \
3075 \
3076 develop(intx, ProfilerNumberOfStubMethods, 25, \
3077 "# of stub methods to show in profile") \
3078 \
3079 develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \
3080 "# of runtime stub nodes to show in profile") \
3081 \
3082 product(intx, ProfileIntervalsTicks, 100, \
3083 "# of ticks between printing of interval profile " \
3084 "(+ProfileIntervals)") \
3085 \
3086 notproduct(intx, ScavengeALotInterval, 1, \
3087 "Interval between which scavenge will occur with +ScavengeALot") \
3088 \
3089 notproduct(intx, FullGCALotInterval, 1, \
3090 "Interval between which full gc will occur with +FullGCALot") \
3091 \
3092 notproduct(intx, FullGCALotStart, 0, \
3093 "For which invocation to start FullGCAlot") \
3094 \
3095 notproduct(intx, FullGCALotDummies, 32*K, \
3096 "Dummy object allocated with +FullGCALot, forcing all objects " \
3097 "to move") \
3098 \
3099 develop(intx, DontYieldALotInterval, 10, \
3100 "Interval between which yields will be dropped (milliseconds)") \
3101 \
3102 develop(intx, MinSleepInterval, 1, \
3103 "Minimum sleep() interval (milliseconds) when " \
3104 "ConvertSleepToYield is off (used for SOLARIS)") \
3105 \
3106 product(intx, EventLogLength, 2000, \
3107 "maximum nof events in event log") \
3108 \
3109 develop(intx, ProfilerPCTickThreshold, 15, \
3110 "Number of ticks in a PC buckets to be a hotspot") \
3111 \
3112 notproduct(intx, DeoptimizeALotInterval, 5, \
3113 "Number of exits until DeoptimizeALot kicks in") \
3114 \
3115 notproduct(intx, ZombieALotInterval, 5, \
3116 "Number of exits until ZombieALot kicks in") \
3117 \
3118 develop(bool, StressNonEntrant, false, \
3119 "Mark nmethods non-entrant at registration") \
3120 \
3121 diagnostic(intx, MallocVerifyInterval, 0, \
3122 "if non-zero, verify C heap after every N calls to " \
3123 "malloc/realloc/free") \
3124 \
3125 diagnostic(intx, MallocVerifyStart, 0, \
3126 "if non-zero, start verifying C heap after Nth call to " \
3127 "malloc/realloc/free") \
3128 \
3129 product(intx, TypeProfileWidth, 2, \
3130 "number of receiver types to record in call/cast profile") \
3131 \
3132 develop(intx, BciProfileWidth, 2, \
3133 "number of return bci's to record in ret profile") \
3134 \
3135 product(intx, PerMethodRecompilationCutoff, 400, \
3136 "After recompiling N times, stay in the interpreter (-1=>'Inf')") \
3137 \
3138 product(intx, PerBytecodeRecompilationCutoff, 200, \
3139 "Per-BCI limit on repeated recompilation (-1=>'Inf')") \
3140 \
3141 product(intx, PerMethodTrapLimit, 100, \
3142 "Limit on traps (of one kind) in a method (includes inlines)") \
3143 \
3144 product(intx, PerBytecodeTrapLimit, 4, \
3145 "Limit on traps (of one kind) at a particular BCI") \
3146 \
3147 develop(intx, FreqCountInvocations, 1, \
3148 "Scaling factor for branch frequencies (deprecated)") \
3149 \
3150 develop(intx, InlineFrequencyRatio, 20, \
3151 "Ratio of call site execution to caller method invocation") \
3152 \
3153 develop_pd(intx, InlineFrequencyCount, \
3154 "Count of call site execution necessary to trigger frequent " \
3155 "inlining") \
3156 \
3157 develop(intx, InlineThrowCount, 50, \
3158 "Force inlining of interpreted methods that throw this often") \
3159 \
3160 develop(intx, InlineThrowMaxSize, 200, \
3161 "Force inlining of throwing methods smaller than this") \
3162 \
3163 product(intx, AliasLevel, 3, \
3164 "0 for no aliasing, 1 for oop/field/static/array split, " \
3165 "2 for class split, 3 for unique instances") \
3166 \
3167 develop(bool, VerifyAliases, false, \
3168 "perform extra checks on the results of alias analysis") \
3169 \
3170 develop(intx, ProfilerNodeSize, 1024, \
3171 "Size in K to allocate for the Profile Nodes of each thread") \
3172 \
3173 develop(intx, V8AtomicOperationUnderLockSpinCount, 50, \
3174 "Number of times to spin wait on a v8 atomic operation lock") \
3175 \
3176 product(intx, ReadSpinIterations, 100, \
3177 "Number of read attempts before a yield (spin inner loop)") \
3178 \
3179 product_pd(intx, PreInflateSpin, \
3180 "Number of times to spin wait before inflation") \
3181 \
3182 product(intx, PreBlockSpin, 10, \
3183 "Number of times to spin in an inflated lock before going to " \
3184 "an OS lock") \
3185 \
3186 /* gc parameters */ \
3187 product(uintx, InitialHeapSize, 0, \
3188 "Initial heap size (in bytes); zero means OldSize + NewSize") \
3189 \
3190 product(uintx, MaxHeapSize, ScaleForWordSize(96*M), \
3191 "Maximum heap size (in bytes)") \
3192 \
3193 product(uintx, OldSize, ScaleForWordSize(4*M), \
3194 "Initial tenured generation size (in bytes)") \
3195 \
3196 product(uintx, NewSize, ScaleForWordSize(1*M), \
3197 "Initial new generation size (in bytes)") \
3198 \
3199 product(uintx, MaxNewSize, max_uintx, \
3200 "Maximum new generation size (in bytes), max_uintx means set " \
3201 "ergonomically") \
3202 \
3203 product(uintx, PretenureSizeThreshold, 0, \
3204 "Maximum size in bytes of objects allocated in DefNew " \
3205 "generation; zero means no maximum") \
3206 \
3207 product(uintx, TLABSize, 0, \
3208 "Starting TLAB size (in bytes); zero means set ergonomically") \
3209 \
3210 product(uintx, MinTLABSize, 2*K, \
3211 "Minimum allowed TLAB size (in bytes)") \
3212 \
3213 product(uintx, TLABAllocationWeight, 35, \
3214 "Allocation averaging weight") \
3215 \
3216 product(uintx, TLABWasteTargetPercent, 1, \
3217 "Percentage of Eden that can be wasted") \
3218 \
3219 product(uintx, TLABRefillWasteFraction, 64, \
3220 "Max TLAB waste at a refill (internal fragmentation)") \
3221 \
3222 product(uintx, TLABWasteIncrement, 4, \
3223 "Increment allowed waste at slow allocation") \
3224 \
3225 product(intx, SurvivorRatio, 8, \
3226 "Ratio of eden/survivor space size") \
3227 \
3228 product(intx, NewRatio, 2, \
3229 "Ratio of new/old generation sizes") \
3230 \
3231 product_pd(uintx, NewSizeThreadIncrease, \
3232 "Additional size added to desired new generation size per " \
3233 "non-daemon thread (in bytes)") \
3234 \
3235 product_pd(uintx, PermSize, \
3236 "Initial size of permanent generation (in bytes)") \
3237 \
3238 product_pd(uintx, MaxPermSize, \
3239 "Maximum size of permanent generation (in bytes)") \
3240 \
3241 product(uintx, MinHeapFreeRatio, 40, \
3242 "Min percentage of heap free after GC to avoid expansion") \
3243 \
3244 product(uintx, MaxHeapFreeRatio, 70, \
3245 "Max percentage of heap free after GC to avoid shrinking") \
3246 \
3247 product(intx, SoftRefLRUPolicyMSPerMB, 1000, \
3248 "Number of milliseconds per MB of free space in the heap") \
3249 \
3250 product(uintx, MinHeapDeltaBytes, ScaleForWordSize(128*K), \
3251 "Min change in heap space due to GC (in bytes)") \
3252 \
3253 product(uintx, MinPermHeapExpansion, ScaleForWordSize(256*K), \
3254 "Min expansion of permanent heap (in bytes)") \
3255 \
3256 product(uintx, MaxPermHeapExpansion, ScaleForWordSize(4*M), \
3257 "Max expansion of permanent heap without full GC (in bytes)") \
3258 \
3259 product(intx, QueuedAllocationWarningCount, 0, \
3260 "Number of times an allocation that queues behind a GC " \
3261 "will retry before printing a warning") \
3262 \
3263 diagnostic(uintx, VerifyGCStartAt, 0, \
3264 "GC invoke count where +VerifyBefore/AfterGC kicks in") \
3265 \
3266 diagnostic(intx, VerifyGCLevel, 0, \
3267 "Generation level at which to start +VerifyBefore/AfterGC") \
3268 \
3269 develop(uintx, ExitAfterGCNum, 0, \
3270 "If non-zero, exit after this GC.") \
3271 \
3272 product(intx, MaxTenuringThreshold, 15, \
3273 "Maximum value for tenuring threshold") \
3274 \
3275 product(intx, InitialTenuringThreshold, 7, \
3276 "Initial value for tenuring threshold") \
3277 \
3278 product(intx, TargetSurvivorRatio, 50, \
3279 "Desired percentage of survivor space used after scavenge") \
3280 \
3281 product(uintx, MarkSweepDeadRatio, 5, \
3282 "Percentage (0-100) of the old gen allowed as dead wood." \
3283 "Serial mark sweep treats this as both the min and max value." \
3284 "CMS uses this value only if it falls back to mark sweep." \
3285 "Par compact uses a variable scale based on the density of the" \
3286 "generation and treats this as the max value when the heap is" \
3287 "either completely full or completely empty. Par compact also" \
3288 "has a smaller default value; see arguments.cpp.") \
3289 \
3290 product(uintx, PermMarkSweepDeadRatio, 20, \
3291 "Percentage (0-100) of the perm gen allowed as dead wood." \
3292 "See MarkSweepDeadRatio for collector-specific comments.") \
3293 \
3294 product(intx, MarkSweepAlwaysCompactCount, 4, \
3295 "How often should we fully compact the heap (ignoring the dead " \
3296 "space parameters)") \
3297 \
3298 product(intx, PrintCMSStatistics, 0, \
3299 "Statistics for CMS") \
3300 \
3301 product(bool, PrintCMSInitiationStatistics, false, \
3302 "Statistics for initiating a CMS collection") \
3303 \
3304 product(intx, PrintFLSStatistics, 0, \
3305 "Statistics for CMS' FreeListSpace") \
3306 \
3307 product(intx, PrintFLSCensus, 0, \
3308 "Census for CMS' FreeListSpace") \
3309 \
3310 develop(uintx, GCExpandToAllocateDelayMillis, 0, \
3311 "Delay in ms between expansion and allocation") \
3312 \
3313 product(intx, DeferThrSuspendLoopCount, 4000, \
3314 "(Unstable) Number of times to iterate in safepoint loop " \
3315 " before blocking VM threads ") \
3316 \
3317 product(intx, DeferPollingPageLoopCount, -1, \
3318 "(Unsafe,Unstable) Number of iterations in safepoint loop " \
3319 "before changing safepoint polling page to RO ") \
3320 \
3321 product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \
3322 \
3323 product(bool, PSChunkLargeArrays, true, \
3324 "true: process large arrays in chunks") \
3325 \
3326 product(uintx, GCDrainStackTargetSize, 64, \
3327 "how many entries we'll try to leave on the stack during " \
3328 "parallel GC") \
3329 \
3330 /* stack parameters */ \
3331 product_pd(intx, StackYellowPages, \
3332 "Number of yellow zone (recoverable overflows) pages") \
3333 \
3334 product_pd(intx, StackRedPages, \
3335 "Number of red zone (unrecoverable overflows) pages") \
3336 \
3337 product_pd(intx, StackShadowPages, \
3338 "Number of shadow zone (for overflow checking) pages" \
3339 " this should exceed the depth of the VM and native call stack") \
3340 \
3341 product_pd(intx, ThreadStackSize, \
3342 "Thread Stack Size (in Kbytes)") \
3343 \
3344 product_pd(intx, VMThreadStackSize, \
3345 "Non-Java Thread Stack Size (in Kbytes)") \
3346 \
3347 product_pd(intx, CompilerThreadStackSize, \
3348 "Compiler Thread Stack Size (in Kbytes)") \
3349 \
3350 develop_pd(uintx, JVMInvokeMethodSlack, \
3351 "Stack space (bytes) required for JVM_InvokeMethod to complete") \
3352 \
3353 product(uintx, ThreadSafetyMargin, 50*M, \
3354 "Thread safety margin is used on fixed-stack LinuxThreads (on " \
3355 "Linux/x86 only) to prevent heap-stack collision. Set to 0 to " \
3356 "disable this feature") \
3357 \
3358 /* code cache parameters */ \
3359 develop(uintx, CodeCacheSegmentSize, 64, \
3360 "Code cache segment size (in bytes) - smallest unit of " \
3361 "allocation") \
3362 \
3363 develop_pd(intx, CodeEntryAlignment, \
3364 "Code entry alignment for generated code (in bytes)") \
3365 \
3366 product_pd(intx, OptoLoopAlignment, \
3367 "Align inner loops to zero relative to this modulus") \
3368 \
3369 product_pd(uintx, InitialCodeCacheSize, \
3370 "Initial code cache size (in bytes)") \
3371 \
3372 product_pd(uintx, ReservedCodeCacheSize, \
3373 "Reserved code cache size (in bytes) - maximum code cache size") \
3374 \
3375 product(uintx, CodeCacheMinimumFreeSpace, 500*K, \
3376 "When less than X space left, we stop compiling.") \
3377 \
3378 product_pd(uintx, CodeCacheExpansionSize, \
3379 "Code cache expansion size (in bytes)") \
3380 \
3381 develop_pd(uintx, CodeCacheMinBlockLength, \
3382 "Minimum number of segments in a code cache block.") \
3383 \
3384 notproduct(bool, ExitOnFullCodeCache, false, \
3385 "Exit the VM if we fill the code cache.") \
3386 \
3387 product(bool, UseCodeCacheFlushing, true, \
3388 "Attempt to clean the code cache before shutting off compiler") \
3389 \
3390 product(intx, MinCodeCacheFlushingInterval, 30, \
3391 "Min number of seconds between code cache cleaning sessions") \
3392 \
3393 product(uintx, CodeCacheFlushingMinimumFreeSpace, 1500*K, \
3394 "When less than X space left, start code cache cleaning") \
3395 \
3396 /* interpreter debugging */ \
3397 develop(intx, BinarySwitchThreshold, 5, \
3398 "Minimal number of lookupswitch entries for rewriting to binary " \
3399 "switch") \
3400 \
3401 develop(intx, StopInterpreterAt, 0, \
3402 "Stops interpreter execution at specified bytecode number") \
3403 \
3404 develop(intx, TraceBytecodesAt, 0, \
3405 "Traces bytecodes starting with specified bytecode number") \
3406 \
3407 /* compiler interface */ \
3408 develop(intx, CIStart, 0, \
3409 "the id of the first compilation to permit") \
3410 \
3411 develop(intx, CIStop, -1, \
3412 "the id of the last compilation to permit") \
3413 \
3414 develop(intx, CIStartOSR, 0, \
3415 "the id of the first osr compilation to permit " \
3416 "(CICountOSR must be on)") \
3417 \
3418 develop(intx, CIStopOSR, -1, \
3419 "the id of the last osr compilation to permit " \
3420 "(CICountOSR must be on)") \
3421 \
3422 develop(intx, CIBreakAtOSR, -1, \
3423 "id of osr compilation to break at") \
3424 \
3425 develop(intx, CIBreakAt, -1, \
3426 "id of compilation to break at") \
3427 \
3428 product(ccstrlist, CompileOnly, "", \
3429 "List of methods (pkg/class.name) to restrict compilation to") \
3430 \
3431 product(ccstr, CompileCommandFile, NULL, \
3432 "Read compiler commands from this file [.hotspot_compiler]") \
3433 \
3434 product(ccstrlist, CompileCommand, "", \
3435 "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \
3436 \
3437 product(bool, CICompilerCountPerCPU, false, \
3438 "1 compiler thread for log(N CPUs)") \
3439 \
3440 develop(intx, CIFireOOMAt, -1, \
3441 "Fire OutOfMemoryErrors throughout CI for testing the compiler " \
3442 "(non-negative value throws OOM after this many CI accesses " \
3443 "in each compile)") \
3444 \
3445 develop(intx, CIFireOOMAtDelay, -1, \
3446 "Wait for this many CI accesses to occur in all compiles before " \
3447 "beginning to throw OutOfMemoryErrors in each compile") \
3448 \
3449 notproduct(bool, CIObjectFactoryVerify, false, \
3450 "enable potentially expensive verification in ciObjectFactory") \
3451 \
3452 /* Priorities */ \
3453 product_pd(bool, UseThreadPriorities, "Use native thread priorities") \
3454 \
3455 product(intx, ThreadPriorityPolicy, 0, \
3456 "0 : Normal. "\
3457 " VM chooses priorities that are appropriate for normal "\
3458 " applications. On Solaris NORM_PRIORITY and above are mapped "\
3459 " to normal native priority. Java priorities below NORM_PRIORITY"\
3460 " map to lower native priority values. On Windows applications"\
3461 " are allowed to use higher native priorities. However, with "\
3462 " ThreadPriorityPolicy=0, VM will not use the highest possible"\
3463 " native priority, THREAD_PRIORITY_TIME_CRITICAL, as it may "\
3464 " interfere with system threads. On Linux thread priorities "\
3465 " are ignored because the OS does not support static priority "\
3466 " in SCHED_OTHER scheduling class which is the only choice for"\
3467 " non-root, non-realtime applications. "\
3468 "1 : Aggressive. "\
3469 " Java thread priorities map over to the entire range of "\
3470 " native thread priorities. Higher Java thread priorities map "\
3471 " to higher native thread priorities. This policy should be "\
3472 " used with care, as sometimes it can cause performance "\
3473 " degradation in the application and/or the entire system. On "\
3474 " Linux this policy requires root privilege.") \
3475 \
3476 product(bool, ThreadPriorityVerbose, false, \
3477 "print priority changes") \
3478 \
3479 product(intx, DefaultThreadPriority, -1, \
3480 "what native priority threads run at if not specified elsewhere (-1 means no change)") \
3481 \
3482 product(intx, CompilerThreadPriority, -1, \
3483 "what priority should compiler threads run at (-1 means no change)") \
3484 \
3485 product(intx, VMThreadPriority, -1, \
3486 "what priority should VM threads run at (-1 means no change)") \
3487 \
3488 product(bool, CompilerThreadHintNoPreempt, true, \
3489 "(Solaris only) Give compiler threads an extra quanta") \
3490 \
3491 product(bool, VMThreadHintNoPreempt, false, \
3492 "(Solaris only) Give VM thread an extra quanta") \
3493 \
3494 product(intx, JavaPriority1_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3495 product(intx, JavaPriority2_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3496 product(intx, JavaPriority3_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3497 product(intx, JavaPriority4_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3498 product(intx, JavaPriority5_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3499 product(intx, JavaPriority6_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3500 product(intx, JavaPriority7_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3501 product(intx, JavaPriority8_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3502 product(intx, JavaPriority9_To_OSPriority, -1, "Map Java priorities to OS priorities") \
3503 product(intx, JavaPriority10_To_OSPriority,-1, "Map Java priorities to OS priorities") \
3504 \
3505 /* compiler debugging */ \
3506 notproduct(intx, CompileTheWorldStartAt, 1, \
3507 "First class to consider when using +CompileTheWorld") \
3508 \
3509 notproduct(intx, CompileTheWorldStopAt, max_jint, \
3510 "Last class to consider when using +CompileTheWorld") \
3511 \
3512 develop(intx, NewCodeParameter, 0, \
3513 "Testing Only: Create a dedicated integer parameter before " \
3514 "putback") \
3515 \
3516 /* new oopmap storage allocation */ \
3517 develop(intx, MinOopMapAllocation, 8, \
3518 "Minimum number of OopMap entries in an OopMapSet") \
3519 \
3520 /* Background Compilation */ \
3521 develop(intx, LongCompileThreshold, 50, \
3522 "Used with +TraceLongCompiles") \
3523 \
3524 product(intx, StarvationMonitorInterval, 200, \
3525 "Pause between each check in ms") \
3526 \
3527 /* recompilation */ \
3528 product_pd(intx, CompileThreshold, \
3529 "number of interpreted method invocations before (re-)compiling") \
3530 \
3531 product_pd(intx, BackEdgeThreshold, \
3532 "Interpreter Back edge threshold at which an OSR compilation is invoked")\
3533 \
3534 product(intx, Tier0InvokeNotifyFreqLog, 7, \
3535 "Interpreter (tier 0) invocation notification frequency.") \
3536 \
3537 product(intx, Tier2InvokeNotifyFreqLog, 11, \
3538 "C1 without MDO (tier 2) invocation notification frequency.") \
3539 \
3540 product(intx, Tier3InvokeNotifyFreqLog, 10, \
3541 "C1 with MDO profiling (tier 3) invocation notification " \
3542 "frequency.") \
3543 \
3544 product(intx, Tier23InlineeNotifyFreqLog, 20, \
3545 "Inlinee invocation (tiers 2 and 3) notification frequency") \
3546 \
3547 product(intx, Tier0BackedgeNotifyFreqLog, 10, \
3548 "Interpreter (tier 0) invocation notification frequency.") \
3549 \
3550 product(intx, Tier2BackedgeNotifyFreqLog, 14, \
3551 "C1 without MDO (tier 2) invocation notification frequency.") \
3552 \
3553 product(intx, Tier3BackedgeNotifyFreqLog, 13, \
3554 "C1 with MDO profiling (tier 3) invocation notification " \
3555 "frequency.") \
3556 \
3557 product(intx, Tier2CompileThreshold, 0, \
3558 "threshold at which tier 2 compilation is invoked") \
3559 \
3560 product(intx, Tier2BackEdgeThreshold, 0, \
3561 "Back edge threshold at which tier 2 compilation is invoked") \
3562 \
3563 product(intx, Tier3InvocationThreshold, 200, \
3564 "Compile if number of method invocations crosses this " \
3565 "threshold") \
3566 \
3567 product(intx, Tier3MinInvocationThreshold, 100, \
3568 "Minimum invocation to compile at tier 3") \
3569 \
3570 product(intx, Tier3CompileThreshold, 2000, \
3571 "Threshold at which tier 3 compilation is invoked (invocation " \
3572 "minimum must be satisfied.") \
3573 \
3574 product(intx, Tier3BackEdgeThreshold, 7000, \
3575 "Back edge threshold at which tier 3 OSR compilation is invoked") \
3576 \
3577 product(intx, Tier4InvocationThreshold, 5000, \
3578 "Compile if number of method invocations crosses this " \
3579 "threshold") \
3580 \
3581 product(intx, Tier4MinInvocationThreshold, 600, \
3582 "Minimum invocation to compile at tier 4") \
3583 \
3584 product(intx, Tier4CompileThreshold, 15000, \
3585 "Threshold at which tier 4 compilation is invoked (invocation " \
3586 "minimum must be satisfied.") \
3587 \
3588 product(intx, Tier4BackEdgeThreshold, 40000, \
3589 "Back edge threshold at which tier 4 OSR compilation is invoked") \
3590 \
3591 product(intx, Tier3DelayOn, 5, \
3592 "If C2 queue size grows over this amount per compiler thread " \
3593 "stop compiling at tier 3 and start compiling at tier 2") \
3594 \
3595 product(intx, Tier3DelayOff, 2, \
3596 "If C2 queue size is less than this amount per compiler thread " \
3597 "allow methods compiled at tier 2 transition to tier 3") \
3598 \
3599 product(intx, Tier3LoadFeedback, 5, \
3600 "Tier 3 thresholds will increase twofold when C1 queue size " \
3601 "reaches this amount per compiler thread") \
3602 \
3603 product(intx, Tier4LoadFeedback, 3, \
3604 "Tier 4 thresholds will increase twofold when C2 queue size " \
3605 "reaches this amount per compiler thread") \
3606 \
3607 product(intx, TieredCompileTaskTimeout, 50, \
3608 "Kill compile task if method was not used within " \
3609 "given timeout in milliseconds") \
3610 \
3611 product(intx, TieredStopAtLevel, 4, \
3612 "Stop at given compilation level") \
3613 \
3614 product(intx, Tier0ProfilingStartPercentage, 200, \
3615 "Start profiling in interpreter if the counters exceed tier 3" \
3616 "thresholds by the specified percentage") \
3617 \
3618 product(intx, TieredRateUpdateMinTime, 1, \
3619 "Minimum rate sampling interval (in milliseconds)") \
3620 \
3621 product(intx, TieredRateUpdateMaxTime, 25, \
3622 "Maximum rate sampling interval (in milliseconds)") \
3623 \
3624 product_pd(bool, TieredCompilation, \
3625 "Enable tiered compilation") \
3626 \
3627 product(bool, PrintTieredEvents, false, \
3628 "Print tiered events notifications") \
3629 \
3630 product(bool, StressTieredRuntime, false, \
3631 "Alternate client and server compiler on compile requests") \
3632 \
3633 product_pd(intx, OnStackReplacePercentage, \
3634 "NON_TIERED number of method invocations/branches (expressed as %"\
3635 "of CompileThreshold) before (re-)compiling OSR code") \
3636 \
3637 product(intx, InterpreterProfilePercentage, 33, \
3638 "NON_TIERED number of method invocations/branches (expressed as %"\
3639 "of CompileThreshold) before profiling in the interpreter") \
3640 \
3641 develop(intx, MaxRecompilationSearchLength, 10, \
3642 "max. # frames to inspect searching for recompilee") \
3643 \
3644 develop(intx, MaxInterpretedSearchLength, 3, \
3645 "max. # interp. frames to skip when searching for recompilee") \
3646 \
3647 develop(intx, DesiredMethodLimit, 8000, \
3648 "desired max. method size (in bytecodes) after inlining") \
3649 \
3650 develop(intx, HugeMethodLimit, 8000, \
3651 "don't compile methods larger than this if " \
3652 "+DontCompileHugeMethods") \
3653 \
3654 /* New JDK 1.4 reflection implementation */ \
3655 \
3656 develop(bool, UseNewReflection, true, \
3657 "Temporary flag for transition to reflection based on dynamic " \
3658 "bytecode generation in 1.4; can no longer be turned off in 1.4 " \
3659 "JDK, and is unneeded in 1.3 JDK, but marks most places VM " \
3660 "changes were needed") \
3661 \
3662 develop(bool, VerifyReflectionBytecodes, false, \
3663 "Force verification of 1.4 reflection bytecodes. Does not work " \
3664 "in situations like that described in 4486457 or for " \
3665 "constructors generated for serialization, so can not be enabled "\
3666 "in product.") \
3667 \
3668 product(bool, ReflectionWrapResolutionErrors, true, \
3669 "Temporary flag for transition to AbstractMethodError wrapped " \
3670 "in InvocationTargetException. See 6531596") \
3671 \
3672 \
3673 develop(intx, FastSuperclassLimit, 8, \
3674 "Depth of hardwired instanceof accelerator array") \
3675 \
3676 /* Properties for Java libraries */ \
3677 \
3678 product(intx, MaxDirectMemorySize, -1, \
3679 "Maximum total size of NIO direct-buffer allocations") \
3680 \
3681 /* temporary developer defined flags */ \
3682 \
3683 diagnostic(bool, UseNewCode, false, \
3684 "Testing Only: Use the new version while testing") \
3685 \
3686 diagnostic(bool, UseNewCode2, false, \
3687 "Testing Only: Use the new version while testing") \
3688 \
3689 diagnostic(bool, UseNewCode3, false, \
3690 "Testing Only: Use the new version while testing") \
3691 \
3692 /* flags for performance data collection */ \
3693 \
3694 product(bool, UsePerfData, falseInEmbedded, \
3695 "Flag to disable jvmstat instrumentation for performance testing" \
3696 "and problem isolation purposes.") \
3697 \
3698 product(bool, PerfDataSaveToFile, false, \
3699 "Save PerfData memory to hsperfdata_<pid> file on exit") \
3700 \
3701 product(ccstr, PerfDataSaveFile, NULL, \
3702 "Save PerfData memory to the specified absolute pathname," \
3703 "%p in the file name if present will be replaced by pid") \
3704 \
3705 product(intx, PerfDataSamplingInterval, 50 /*ms*/, \
3706 "Data sampling interval in milliseconds") \
3707 \
3708 develop(bool, PerfTraceDataCreation, false, \
3709 "Trace creation of Performance Data Entries") \
3710 \
3711 develop(bool, PerfTraceMemOps, false, \
3712 "Trace PerfMemory create/attach/detach calls") \
3713 \
3714 product(bool, PerfDisableSharedMem, false, \
3715 "Store performance data in standard memory") \
3716 \
3717 product(intx, PerfDataMemorySize, 32*K, \
3718 "Size of performance data memory region. Will be rounded " \
3719 "up to a multiple of the native os page size.") \
3720 \
3721 product(intx, PerfMaxStringConstLength, 1024, \
3722 "Maximum PerfStringConstant string length before truncation") \
3723 \
3724 product(bool, PerfAllowAtExitRegistration, false, \
3725 "Allow registration of atexit() methods") \
3726 \
3727 product(bool, PerfBypassFileSystemCheck, false, \
3728 "Bypass Win32 file system criteria checks (Windows Only)") \
3729 \
3730 product(intx, UnguardOnExecutionViolation, 0, \
3731 "Unguard page and retry on no-execute fault (Win32 only)" \
3732 "0=off, 1=conservative, 2=aggressive") \
3733 \
3734 /* Serviceability Support */ \
3735 \
3736 product(bool, ManagementServer, false, \
3737 "Create JMX Management Server") \
3738 \
3739 product(bool, DisableAttachMechanism, false, \
3740 "Disable mechanism that allows tools to attach to this VM") \
3741 \
3742 product(bool, StartAttachListener, false, \
3743 "Always start Attach Listener at VM startup") \
3744 \
3745 manageable(bool, PrintConcurrentLocks, false, \
3746 "Print java.util.concurrent locks in thread dump") \
3747 \
3748 product(bool, TransmitErrorReport, false, \
3749 "Enable error report transmission on erroneous termination") \
3750 \
3751 product(ccstr, ErrorReportServer, NULL, \
3752 "Override built-in error report server address") \
3753 \
3754 /* Shared spaces */ \
3755 \
3756 product(bool, UseSharedSpaces, true, \
3757 "Use shared spaces in the permanent generation") \
3758 \
3759 product(bool, RequireSharedSpaces, false, \
3760 "Require shared spaces in the permanent generation") \
3761 \
3762 product(bool, DumpSharedSpaces, false, \
3763 "Special mode: JVM reads a class list, loads classes, builds " \
3764 "shared spaces, and dumps the shared spaces to a file to be " \
3765 "used in future JVM runs.") \
3766 \
3767 product(bool, PrintSharedSpaces, false, \
3768 "Print usage of shared spaces") \
3769 \
3770 product(uintx, SharedDummyBlockSize, 512*M, \
3771 "Size of dummy block used to shift heap addresses (in bytes)") \
3772 \
3773 product(uintx, SharedReadWriteSize, NOT_LP64(12*M) LP64_ONLY(13*M), \
3774 "Size of read-write space in permanent generation (in bytes)") \
3775 \
3776 product(uintx, SharedReadOnlySize, 10*M, \
3777 "Size of read-only space in permanent generation (in bytes)") \
3778 \
3779 product(uintx, SharedMiscDataSize, NOT_LP64(4*M) LP64_ONLY(5*M), \
3780 "Size of the shared data area adjacent to the heap (in bytes)") \
3781 \
3782 product(uintx, SharedMiscCodeSize, 4*M, \
3783 "Size of the shared code area adjacent to the heap (in bytes)") \
3784 \
3785 diagnostic(bool, SharedOptimizeColdStart, true, \
3786 "At dump time, order shared objects to achieve better " \
3787 "cold startup time.") \
3788 \
3789 develop(intx, SharedOptimizeColdStartPolicy, 2, \
3790 "Reordering policy for SharedOptimizeColdStart " \
3791 "0=favor classload-time locality, 1=balanced, " \
3792 "2=favor runtime locality") \
3793 \
3794 diagnostic(bool, SharedSkipVerify, false, \
3795 "Skip assert() and verify() which page-in unwanted shared " \
3796 "objects. ") \
3797 \
3798 diagnostic(bool, EnableInvokeDynamic, true, \
3799 "support JSR 292 (method handles, invokedynamic, " \
3800 "anonymous classes") \
3801 \
3802 product(bool, AnonymousClasses, false, \
3803 "support sun.misc.Unsafe.defineAnonymousClass (deprecated)") \
3804 \
3805 experimental(bool, EnableMethodHandles, false, \
3806 "support method handles (deprecated)") \
3807 \
3808 diagnostic(intx, MethodHandlePushLimit, 3, \
3809 "number of additional stack slots a method handle may push") \
3810 \
3811 diagnostic(bool, PrintMethodHandleStubs, false, \
3812 "Print generated stub code for method handles") \
3813 \
3814 develop(bool, TraceMethodHandles, false, \
3815 "trace internal method handle operations") \
3816 \
3817 diagnostic(bool, VerifyMethodHandles, trueInDebug, \
3818 "perform extra checks when constructing method handles") \
3819 \
3820 diagnostic(bool, OptimizeMethodHandles, true, \
3821 "when constructing method handles, try to improve them") \
3822 \
3823 develop(bool, StressMethodHandleWalk, false, \
3824 "Process all method handles with MethodHandleWalk") \
3825 \
3826 diagnostic(bool, UseRicochetFrames, true, \
3827 "use ricochet stack frames for method handle combination, " \
3828 "if the platform supports them") \
3829 \
3830 experimental(bool, TrustFinalNonStaticFields, false, \
3831 "trust final non-static declarations for constant folding") \
3832 \
3833 experimental(bool, AllowInvokeGeneric, false, \
3834 "accept MethodHandle.invoke and MethodHandle.invokeGeneric " \
3835 "as equivalent methods") \
3836 \
3837 develop(bool, TraceInvokeDynamic, false, \
3838 "trace internal invoke dynamic operations") \
3839 \
3840 diagnostic(bool, PauseAtStartup, false, \
3841 "Causes the VM to pause at startup time and wait for the pause " \
3842 "file to be removed (default: ./vm.paused.<pid>)") \
3843 \
3844 diagnostic(ccstr, PauseAtStartupFile, NULL, \
3845 "The file to create and for whose removal to await when pausing " \
3846 "at startup. (default: ./vm.paused.<pid>)") \
3847 \
3848 diagnostic(bool, PauseAtExit, false, \
3849 "Pause and wait for keypress on exit if a debugger is attached") \
3850 \
3851 product(bool, ExtendedDTraceProbes, false, \
3852 "Enable performance-impacting dtrace probes") \
3853 \
3854 product(bool, DTraceMethodProbes, false, \
3855 "Enable dtrace probes for method-entry and method-exit") \
3856 \
3857 product(bool, DTraceAllocProbes, false, \
3858 "Enable dtrace probes for object allocation") \
3859 \
3860 product(bool, DTraceMonitorProbes, false, \
3861 "Enable dtrace probes for monitor events") \
3862 \
3863 product(bool, RelaxAccessControlCheck, false, \
3864 "Relax the access control checks in the verifier") \
3865 \
3866 diagnostic(bool, PrintDTraceDOF, false, \
3867 "Print the DTrace DOF passed to the system for JSDT probes") \
3868 \
3869 product(uintx, StringTableSize, 1009, \
3870 "Number of buckets in the interned String table") \
3871 \
3872 product(bool, UseVMInterruptibleIO, false, \
3873 "(Unstable, Solaris-specific) Thread interrupt before or with " \
3874 "EINTR for I/O operations results in OS_INTRPT. The default value"\
3875 " of this flag is true for JDK 6 and earliers")
3877 /*
3878 * Macros for factoring of globals
3879 */
3881 // Interface macros
3882 #define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name;
3883 #define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name;
3884 #define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name;
3885 #define DECLARE_EXPERIMENTAL_FLAG(type, name, value, doc) extern "C" type name;
3886 #define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name;
3887 #define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name;
3888 #ifdef PRODUCT
3889 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) const type name = value;
3890 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) const type name = pd_##name;
3891 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc)
3892 #else
3893 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name;
3894 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name;
3895 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name;
3896 #endif
3897 // Special LP64 flags, product only needed for now.
3898 #ifdef _LP64
3899 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) extern "C" type name;
3900 #else
3901 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) const type name = value;
3902 #endif // _LP64
3904 // Implementation macros
3905 #define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value;
3906 #define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name;
3907 #define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value;
3908 #define MATERIALIZE_EXPERIMENTAL_FLAG(type, name, value, doc) type name = value;
3909 #define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value;
3910 #define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value;
3911 #ifdef PRODUCT
3912 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) /* flag name is constant */
3913 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) /* flag name is constant */
3914 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc)
3915 #else
3916 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value;
3917 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name;
3918 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value;
3919 #endif
3920 #ifdef _LP64
3921 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) type name = value;
3922 #else
3923 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) /* flag is constant */
3924 #endif // _LP64
3926 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)
3928 RUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG)
3930 // Extensions
3932 #include "runtime/globals_ext.hpp"
3934 #endif // SHARE_VM_RUNTIME_GLOBALS_HPP
