Mercurial > hg > truffle
annotate src/share/vm/runtime/globals.hpp @ 3763:e66f38dd58a9
Merge
author | ysr |
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date | Wed, 08 Jun 2011 08:39:53 -0700 |
parents | a93146d0e4be |
children | a9b8b43b115f 2a241e764894 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_RUNTIME_GLOBALS_HPP |
26 #define SHARE_VM_RUNTIME_GLOBALS_HPP | |
27 | |
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 | |
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38 #ifdef TARGET_ARCH_arm |
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39 # include "globals_arm.hpp" |
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40 #endif |
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41 #ifdef TARGET_ARCH_ppc |
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42 # include "globals_ppc.hpp" |
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43 #endif |
1972 | 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_ARCH_linux_x86 | |
54 # include "globals_linux_x86.hpp" | |
55 #endif | |
56 #ifdef TARGET_OS_ARCH_linux_sparc | |
57 # include "globals_linux_sparc.hpp" | |
58 #endif | |
59 #ifdef TARGET_OS_ARCH_linux_zero | |
60 # include "globals_linux_zero.hpp" | |
61 #endif | |
62 #ifdef TARGET_OS_ARCH_solaris_x86 | |
63 # include "globals_solaris_x86.hpp" | |
64 #endif | |
65 #ifdef TARGET_OS_ARCH_solaris_sparc | |
66 # include "globals_solaris_sparc.hpp" | |
67 #endif | |
68 #ifdef TARGET_OS_ARCH_windows_x86 | |
69 # include "globals_windows_x86.hpp" | |
70 #endif | |
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71 #ifdef TARGET_OS_ARCH_linux_arm |
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72 # include "globals_linux_arm.hpp" |
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73 #endif |
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74 #ifdef TARGET_OS_ARCH_linux_ppc |
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75 # include "globals_linux_ppc.hpp" |
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76 #endif |
1972 | 77 #ifdef COMPILER1 |
78 #ifdef TARGET_ARCH_x86 | |
79 # include "c1_globals_x86.hpp" | |
80 #endif | |
81 #ifdef TARGET_ARCH_sparc | |
82 # include "c1_globals_sparc.hpp" | |
83 #endif | |
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84 #ifdef TARGET_ARCH_arm |
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85 # include "c1_globals_arm.hpp" |
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86 #endif |
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87 #ifdef TARGET_ARCH_ppc |
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88 # include "c1_globals_ppc.hpp" |
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89 #endif |
1972 | 90 #ifdef TARGET_OS_FAMILY_linux |
91 # include "c1_globals_linux.hpp" | |
92 #endif | |
93 #ifdef TARGET_OS_FAMILY_solaris | |
94 # include "c1_globals_solaris.hpp" | |
95 #endif | |
96 #ifdef TARGET_OS_FAMILY_windows | |
97 # include "c1_globals_windows.hpp" | |
98 #endif | |
99 #endif | |
100 #ifdef COMPILER2 | |
101 #ifdef TARGET_ARCH_x86 | |
102 # include "c2_globals_x86.hpp" | |
103 #endif | |
104 #ifdef TARGET_ARCH_sparc | |
105 # include "c2_globals_sparc.hpp" | |
106 #endif | |
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107 #ifdef TARGET_ARCH_arm |
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108 # include "c2_globals_arm.hpp" |
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109 #endif |
1972 | 110 #ifdef TARGET_OS_FAMILY_linux |
111 # include "c2_globals_linux.hpp" | |
112 #endif | |
113 #ifdef TARGET_OS_FAMILY_solaris | |
114 # include "c2_globals_solaris.hpp" | |
115 #endif | |
116 #ifdef TARGET_OS_FAMILY_windows | |
117 # include "c2_globals_windows.hpp" | |
118 #endif | |
119 #endif | |
120 #ifdef SHARK | |
121 #ifdef TARGET_ARCH_zero | |
122 # include "shark_globals_zero.hpp" | |
123 #endif | |
124 #endif | |
125 | |
1692 | 126 #if !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK) |
0 | 127 define_pd_global(bool, BackgroundCompilation, false); |
128 define_pd_global(bool, UseTLAB, false); | |
129 define_pd_global(bool, CICompileOSR, false); | |
130 define_pd_global(bool, UseTypeProfile, false); | |
131 define_pd_global(bool, UseOnStackReplacement, false); | |
132 define_pd_global(bool, InlineIntrinsics, false); | |
133 define_pd_global(bool, PreferInterpreterNativeStubs, true); | |
134 define_pd_global(bool, ProfileInterpreter, false); | |
135 define_pd_global(bool, ProfileTraps, false); | |
136 define_pd_global(bool, TieredCompilation, false); | |
137 | |
138 define_pd_global(intx, CompileThreshold, 0); | |
139 define_pd_global(intx, BackEdgeThreshold, 0); | |
140 | |
141 define_pd_global(intx, OnStackReplacePercentage, 0); | |
142 define_pd_global(bool, ResizeTLAB, false); | |
143 define_pd_global(intx, FreqInlineSize, 0); | |
1064 | 144 define_pd_global(intx, InlineSmallCode, 0); |
0 | 145 define_pd_global(intx, NewSizeThreadIncrease, 4*K); |
146 define_pd_global(intx, InlineClassNatives, true); | |
147 define_pd_global(intx, InlineUnsafeOps, true); | |
148 define_pd_global(intx, InitialCodeCacheSize, 160*K); | |
149 define_pd_global(intx, ReservedCodeCacheSize, 32*M); | |
150 define_pd_global(intx, CodeCacheExpansionSize, 32*K); | |
151 define_pd_global(intx, CodeCacheMinBlockLength, 1); | |
152 define_pd_global(uintx,PermSize, ScaleForWordSize(4*M)); | |
153 define_pd_global(uintx,MaxPermSize, ScaleForWordSize(64*M)); | |
154 define_pd_global(bool, NeverActAsServerClassMachine, true); | |
1064 | 155 define_pd_global(uint64_t,MaxRAM, 1ULL*G); |
0 | 156 #define CI_COMPILER_COUNT 0 |
157 #else | |
158 | |
159 #ifdef COMPILER2 | |
160 #define CI_COMPILER_COUNT 2 | |
161 #else | |
162 #define CI_COMPILER_COUNT 1 | |
163 #endif // COMPILER2 | |
164 | |
165 #endif // no compilers | |
166 | |
167 | |
168 // string type aliases used only in this file | |
169 typedef const char* ccstr; | |
170 typedef const char* ccstrlist; // represents string arguments which accumulate | |
171 | |
172 enum FlagValueOrigin { | |
173 DEFAULT = 0, | |
174 COMMAND_LINE = 1, | |
175 ENVIRON_VAR = 2, | |
176 CONFIG_FILE = 3, | |
177 MANAGEMENT = 4, | |
178 ERGONOMIC = 5, | |
179 ATTACH_ON_DEMAND = 6, | |
180 INTERNAL = 99 | |
181 }; | |
182 | |
183 struct Flag { | |
184 const char *type; | |
185 const char *name; | |
186 void* addr; | |
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187 |
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188 NOT_PRODUCT(const char *doc;) |
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189 |
0 | 190 const char *kind; |
191 FlagValueOrigin origin; | |
192 | |
193 // points to all Flags static array | |
194 static Flag *flags; | |
195 | |
196 // number of flags | |
197 static size_t numFlags; | |
198 | |
199 static Flag* find_flag(char* name, size_t length); | |
200 | |
201 bool is_bool() const { return strcmp(type, "bool") == 0; } | |
202 bool get_bool() const { return *((bool*) addr); } | |
203 void set_bool(bool value) { *((bool*) addr) = value; } | |
204 | |
205 bool is_intx() const { return strcmp(type, "intx") == 0; } | |
206 intx get_intx() const { return *((intx*) addr); } | |
207 void set_intx(intx value) { *((intx*) addr) = value; } | |
208 | |
209 bool is_uintx() const { return strcmp(type, "uintx") == 0; } | |
210 uintx get_uintx() const { return *((uintx*) addr); } | |
211 void set_uintx(uintx value) { *((uintx*) addr) = value; } | |
212 | |
1064 | 213 bool is_uint64_t() const { return strcmp(type, "uint64_t") == 0; } |
214 uint64_t get_uint64_t() const { return *((uint64_t*) addr); } | |
215 void set_uint64_t(uint64_t value) { *((uint64_t*) addr) = value; } | |
216 | |
0 | 217 bool is_double() const { return strcmp(type, "double") == 0; } |
218 double get_double() const { return *((double*) addr); } | |
219 void set_double(double value) { *((double*) addr) = value; } | |
220 | |
221 bool is_ccstr() const { return strcmp(type, "ccstr") == 0 || strcmp(type, "ccstrlist") == 0; } | |
222 bool ccstr_accumulates() const { return strcmp(type, "ccstrlist") == 0; } | |
223 ccstr get_ccstr() const { return *((ccstr*) addr); } | |
224 void set_ccstr(ccstr value) { *((ccstr*) addr) = value; } | |
225 | |
226 bool is_unlocker() const; | |
227 bool is_unlocked() const; | |
228 bool is_writeable() const; | |
229 bool is_external() const; | |
230 | |
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231 void print_on(outputStream* st, bool withComments = false ); |
0 | 232 void print_as_flag(outputStream* st); |
233 }; | |
234 | |
235 // debug flags control various aspects of the VM and are global accessible | |
236 | |
237 // use FlagSetting to temporarily change some debug flag | |
238 // e.g. FlagSetting fs(DebugThisAndThat, true); | |
239 // restored to previous value upon leaving scope | |
240 class FlagSetting { | |
241 bool val; | |
242 bool* flag; | |
243 public: | |
244 FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; } | |
245 ~FlagSetting() { *flag = val; } | |
246 }; | |
247 | |
248 | |
249 class CounterSetting { | |
250 intx* counter; | |
251 public: | |
252 CounterSetting(intx* cnt) { counter = cnt; (*counter)++; } | |
253 ~CounterSetting() { (*counter)--; } | |
254 }; | |
255 | |
256 | |
257 class IntFlagSetting { | |
258 intx val; | |
259 intx* flag; | |
260 public: | |
261 IntFlagSetting(intx& fl, intx newValue) { flag = &fl; val = fl; fl = newValue; } | |
262 ~IntFlagSetting() { *flag = val; } | |
263 }; | |
264 | |
265 | |
266 class DoubleFlagSetting { | |
267 double val; | |
268 double* flag; | |
269 public: | |
270 DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; } | |
271 ~DoubleFlagSetting() { *flag = val; } | |
272 }; | |
273 | |
274 | |
275 class CommandLineFlags { | |
276 public: | |
277 static bool boolAt(char* name, size_t len, bool* value); | |
278 static bool boolAt(char* name, bool* value) { return boolAt(name, strlen(name), value); } | |
279 static bool boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin); | |
280 static bool boolAtPut(char* name, bool* value, FlagValueOrigin origin) { return boolAtPut(name, strlen(name), value, origin); } | |
281 | |
282 static bool intxAt(char* name, size_t len, intx* value); | |
283 static bool intxAt(char* name, intx* value) { return intxAt(name, strlen(name), value); } | |
284 static bool intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin); | |
285 static bool intxAtPut(char* name, intx* value, FlagValueOrigin origin) { return intxAtPut(name, strlen(name), value, origin); } | |
286 | |
287 static bool uintxAt(char* name, size_t len, uintx* value); | |
288 static bool uintxAt(char* name, uintx* value) { return uintxAt(name, strlen(name), value); } | |
289 static bool uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin); | |
290 static bool uintxAtPut(char* name, uintx* value, FlagValueOrigin origin) { return uintxAtPut(name, strlen(name), value, origin); } | |
291 | |
1064 | 292 static bool uint64_tAt(char* name, size_t len, uint64_t* value); |
293 static bool uint64_tAt(char* name, uint64_t* value) { return uint64_tAt(name, strlen(name), value); } | |
294 static bool uint64_tAtPut(char* name, size_t len, uint64_t* value, FlagValueOrigin origin); | |
295 static bool uint64_tAtPut(char* name, uint64_t* value, FlagValueOrigin origin) { return uint64_tAtPut(name, strlen(name), value, origin); } | |
296 | |
0 | 297 static bool doubleAt(char* name, size_t len, double* value); |
298 static bool doubleAt(char* name, double* value) { return doubleAt(name, strlen(name), value); } | |
299 static bool doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin); | |
300 static bool doubleAtPut(char* name, double* value, FlagValueOrigin origin) { return doubleAtPut(name, strlen(name), value, origin); } | |
301 | |
302 static bool ccstrAt(char* name, size_t len, ccstr* value); | |
303 static bool ccstrAt(char* name, ccstr* value) { return ccstrAt(name, strlen(name), value); } | |
304 static bool ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin); | |
305 static bool ccstrAtPut(char* name, ccstr* value, FlagValueOrigin origin) { return ccstrAtPut(name, strlen(name), value, origin); } | |
306 | |
307 // Returns false if name is not a command line flag. | |
308 static bool wasSetOnCmdline(const char* name, bool* value); | |
309 static void printSetFlags(); | |
310 | |
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311 static void printFlags(bool withComments = false ); |
0 | 312 |
313 static void verify() PRODUCT_RETURN; | |
314 }; | |
315 | |
316 // use this for flags that are true by default in the debug version but | |
317 // false in the optimized version, and vice versa | |
318 #ifdef ASSERT | |
319 #define trueInDebug true | |
320 #define falseInDebug false | |
321 #else | |
322 #define trueInDebug false | |
323 #define falseInDebug true | |
324 #endif | |
325 | |
326 // use this for flags that are true per default in the product build | |
327 // but false in development builds, and vice versa | |
328 #ifdef PRODUCT | |
329 #define trueInProduct true | |
330 #define falseInProduct false | |
331 #else | |
332 #define trueInProduct false | |
333 #define falseInProduct true | |
334 #endif | |
335 | |
336 // use this for flags that are true per default in the tiered build | |
337 // but false in non-tiered builds, and vice versa | |
338 #ifdef TIERED | |
339 #define trueInTiered true | |
340 #define falseInTiered false | |
341 #else | |
342 #define trueInTiered false | |
343 #define falseInTiered true | |
344 #endif | |
345 | |
346 // develop flags are settable / visible only during development and are constant in the PRODUCT version | |
347 // product flags are always settable / visible | |
348 // notproduct flags are settable / visible only during development and are not declared in the PRODUCT version | |
349 | |
350 // A flag must be declared with one of the following types: | |
351 // bool, intx, uintx, ccstr. | |
352 // The type "ccstr" is an alias for "const char*" and is used | |
353 // only in this file, because the macrology requires single-token type names. | |
354 | |
355 // Note: Diagnostic options not meant for VM tuning or for product modes. | |
356 // They are to be used for VM quality assurance or field diagnosis | |
357 // of VM bugs. They are hidden so that users will not be encouraged to | |
358 // try them as if they were VM ordinary execution options. However, they | |
359 // are available in the product version of the VM. Under instruction | |
360 // from support engineers, VM customers can turn them on to collect | |
361 // diagnostic information about VM problems. To use a VM diagnostic | |
362 // option, you must first specify +UnlockDiagnosticVMOptions. | |
363 // (This master switch also affects the behavior of -Xprintflags.) | |
350
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364 // |
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365 // experimental flags are in support of features that are not |
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366 // part of the officially supported product, but are available |
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367 // for experimenting with. They could, for example, be performance |
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368 // features that may not have undergone full or rigorous QA, but which may |
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369 // help performance in some cases and released for experimentation |
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370 // by the community of users and developers. This flag also allows one to |
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371 // be able to build a fully supported product that nonetheless also |
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372 // ships with some unsupported, lightly tested, experimental features. |
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373 // Like the UnlockDiagnosticVMOptions flag above, there is a corresponding |
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374 // UnlockExperimentalVMOptions flag, which allows the control and |
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375 // modification of the experimental flags. |
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376 // |
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377 // Nota bene: neither diagnostic nor experimental options should be used casually, |
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378 // and they are not supported on production loads, except under explicit |
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379 // direction from support engineers. |
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380 // |
0 | 381 // manageable flags are writeable external product flags. |
382 // They are dynamically writeable through the JDK management interface | |
383 // (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole. | |
384 // These flags are external exported interface (see CCC). The list of | |
385 // manageable flags can be queried programmatically through the management | |
386 // interface. | |
387 // | |
388 // A flag can be made as "manageable" only if | |
389 // - the flag is defined in a CCC as an external exported interface. | |
390 // - the VM implementation supports dynamic setting of the flag. | |
391 // This implies that the VM must *always* query the flag variable | |
392 // and not reuse state related to the flag state at any given time. | |
393 // - you want the flag to be queried programmatically by the customers. | |
394 // | |
395 // product_rw flags are writeable internal product flags. | |
396 // They are like "manageable" flags but for internal/private use. | |
397 // The list of product_rw flags are internal/private flags which | |
398 // may be changed/removed in a future release. It can be set | |
399 // through the management interface to get/set value | |
400 // when the name of flag is supplied. | |
401 // | |
402 // A flag can be made as "product_rw" only if | |
403 // - the VM implementation supports dynamic setting of the flag. | |
404 // This implies that the VM must *always* query the flag variable | |
405 // and not reuse state related to the flag state at any given time. | |
406 // | |
407 // Note that when there is a need to support develop flags to be writeable, | |
408 // it can be done in the same way as product_rw. | |
409 | |
350
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410 #define RUNTIME_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw, lp64_product) \ |
113
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411 \ |
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412 lp64_product(bool, UseCompressedOops, false, \ |
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413 "Use 32-bit object references in 64-bit VM. " \ |
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414 "lp64_product means flag is always constant in 32 bit VM") \ |
0 | 415 \ |
642
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416 notproduct(bool, CheckCompressedOops, true, \ |
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417 "generate checks in encoding/decoding code in debug VM") \ |
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418 \ |
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419 product_pd(uintx, HeapBaseMinAddress, \ |
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420 "OS specific low limit for heap base address") \ |
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421 \ |
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422 diagnostic(bool, PrintCompressedOopsMode, false, \ |
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423 "Print compressed oops base address and encoding mode") \ |
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424 \ |
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425 lp64_product(intx, ObjectAlignmentInBytes, 8, \ |
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426 "Default object alignment in bytes, 8 is minimum") \ |
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427 \ |
0 | 428 /* UseMembar is theoretically a temp flag used for memory barrier \ |
429 * removal testing. It was supposed to be removed before FCS but has \ | |
430 * been re-added (see 6401008) */ \ | |
1868
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431 product_pd(bool, UseMembar, \ |
0 | 432 "(Unstable) Issues membars on thread state transitions") \ |
433 \ | |
2192
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434 /* Temp PPC Flag to allow disabling the use of lwsync on ppc platforms \ |
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435 * that don't support it. This will be replaced by processor detection \ |
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436 * logic. \ |
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437 */ \ |
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438 product(bool, UsePPCLWSYNC, true, \ |
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439 "Use lwsync instruction if true, else use slower sync") \ |
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440 \ |
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441 /* Temporary: See 6948537 */ \ |
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442 experimental(bool, UseMemSetInBOT, true, \ |
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443 "(Unstable) uses memset in BOT updates in GC code") \ |
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444 \ |
0 | 445 diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \ |
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446 "Enable normal processing of flags relating to field diagnostics")\ |
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447 \ |
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448 experimental(bool, UnlockExperimentalVMOptions, false, \ |
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449 "Enable normal processing of flags relating to experimental features")\ |
0 | 450 \ |
451 product(bool, JavaMonitorsInStackTrace, true, \ | |
452 "Print info. about Java monitor locks when the stacks are dumped")\ | |
453 \ | |
454 product_pd(bool, UseLargePages, \ | |
455 "Use large page memory") \ | |
456 \ | |
389
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457 product_pd(bool, UseLargePagesIndividualAllocation, \ |
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458 "Allocate large pages individually for better affinity") \ |
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459 \ |
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460 develop(bool, LargePagesIndividualAllocationInjectError, false, \ |
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461 "Fail large pages individual allocation") \ |
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462 \ |
0 | 463 develop(bool, TracePageSizes, false, \ |
464 "Trace page size selection and usage.") \ | |
465 \ | |
466 product(bool, UseNUMA, false, \ | |
467 "Use NUMA if available") \ | |
468 \ | |
462
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469 product(bool, ForceNUMA, false, \ |
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470 "Force NUMA optimizations on single-node/UMA systems") \ |
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471 \ |
0 | 472 product(intx, NUMAChunkResizeWeight, 20, \ |
473 "Percentage (0-100) used to weight the current sample when " \ | |
474 "computing exponentially decaying average for " \ | |
475 "AdaptiveNUMAChunkSizing") \ | |
476 \ | |
477 product(intx, NUMASpaceResizeRate, 1*G, \ | |
478 "Do not reallocate more that this amount per collection") \ | |
479 \ | |
480 product(bool, UseAdaptiveNUMAChunkSizing, true, \ | |
481 "Enable adaptive chunk sizing for NUMA") \ | |
482 \ | |
483 product(bool, NUMAStats, false, \ | |
484 "Print NUMA stats in detailed heap information") \ | |
485 \ | |
486 product(intx, NUMAPageScanRate, 256, \ | |
487 "Maximum number of pages to include in the page scan procedure") \ | |
488 \ | |
489 product_pd(bool, NeedsDeoptSuspend, \ | |
490 "True for register window machines (sparc/ia64)") \ | |
491 \ | |
492 product(intx, UseSSE, 99, \ | |
493 "Highest supported SSE instructions set on x86/x64") \ | |
494 \ | |
495 product(uintx, LargePageSizeInBytes, 0, \ | |
496 "Large page size (0 to let VM choose the page size") \ | |
497 \ | |
498 product(uintx, LargePageHeapSizeThreshold, 128*M, \ | |
499 "Use large pages if max heap is at least this big") \ | |
500 \ | |
501 product(bool, ForceTimeHighResolution, false, \ | |
502 "Using high time resolution(For Win32 only)") \ | |
503 \ | |
504 develop(bool, TraceItables, false, \ | |
505 "Trace initialization and use of itables") \ | |
506 \ | |
507 develop(bool, TracePcPatching, false, \ | |
508 "Trace usage of frame::patch_pc") \ | |
509 \ | |
510 develop(bool, TraceJumps, false, \ | |
511 "Trace assembly jumps in thread ring buffer") \ | |
512 \ | |
513 develop(bool, TraceRelocator, false, \ | |
514 "Trace the bytecode relocator") \ | |
515 \ | |
516 develop(bool, TraceLongCompiles, false, \ | |
517 "Print out every time compilation is longer than " \ | |
518 "a given threashold") \ | |
519 \ | |
520 develop(bool, SafepointALot, false, \ | |
521 "Generates a lot of safepoints. Works with " \ | |
522 "GuaranteedSafepointInterval") \ | |
523 \ | |
524 product_pd(bool, BackgroundCompilation, \ | |
525 "A thread requesting compilation is not blocked during " \ | |
526 "compilation") \ | |
527 \ | |
528 product(bool, PrintVMQWaitTime, false, \ | |
529 "Prints out the waiting time in VM operation queue") \ | |
530 \ | |
531 develop(bool, BailoutToInterpreterForThrows, false, \ | |
532 "Compiled methods which throws/catches exceptions will be " \ | |
533 "deopt and intp.") \ | |
534 \ | |
535 develop(bool, NoYieldsInMicrolock, false, \ | |
536 "Disable yields in microlock") \ | |
537 \ | |
538 develop(bool, TraceOopMapGeneration, false, \ | |
539 "Shows oopmap generation") \ | |
540 \ | |
541 product(bool, MethodFlushing, true, \ | |
542 "Reclamation of zombie and not-entrant methods") \ | |
543 \ | |
544 develop(bool, VerifyStack, false, \ | |
545 "Verify stack of each thread when it is entering a runtime call") \ | |
546 \ | |
547 develop(bool, ForceUnreachable, false, \ | |
548 "(amd64) Make all non code cache addresses to be unreachable with rip-rel forcing use of 64bit literal fixups") \ | |
549 \ | |
550 notproduct(bool, StressDerivedPointers, false, \ | |
551 "Force scavenge when a derived pointers is detected on stack " \ | |
552 "after rtm call") \ | |
553 \ | |
554 develop(bool, TraceDerivedPointers, false, \ | |
555 "Trace traversal of derived pointers on stack") \ | |
556 \ | |
557 notproduct(bool, TraceCodeBlobStacks, false, \ | |
558 "Trace stack-walk of codeblobs") \ | |
559 \ | |
560 product(bool, PrintJNIResolving, false, \ | |
561 "Used to implement -v:jni") \ | |
562 \ | |
563 notproduct(bool, PrintRewrites, false, \ | |
564 "Print methods that are being rewritten") \ | |
565 \ | |
566 product(bool, UseInlineCaches, true, \ | |
567 "Use Inline Caches for virtual calls ") \ | |
568 \ | |
569 develop(bool, InlineArrayCopy, true, \ | |
570 "inline arraycopy native that is known to be part of " \ | |
571 "base library DLL") \ | |
572 \ | |
573 develop(bool, InlineObjectHash, true, \ | |
574 "inline Object::hashCode() native that is known to be part " \ | |
575 "of base library DLL") \ | |
576 \ | |
577 develop(bool, InlineObjectCopy, true, \ | |
578 "inline Object.clone and Arrays.copyOf[Range] intrinsics") \ | |
579 \ | |
580 develop(bool, InlineNatives, true, \ | |
581 "inline natives that are known to be part of base library DLL") \ | |
582 \ | |
583 develop(bool, InlineMathNatives, true, \ | |
584 "inline SinD, CosD, etc.") \ | |
585 \ | |
586 develop(bool, InlineClassNatives, true, \ | |
587 "inline Class.isInstance, etc") \ | |
588 \ | |
589 develop(bool, InlineAtomicLong, true, \ | |
590 "inline sun.misc.AtomicLong") \ | |
591 \ | |
592 develop(bool, InlineThreadNatives, true, \ | |
593 "inline Thread.currentThread, etc") \ | |
594 \ | |
595 develop(bool, InlineReflectionGetCallerClass, true, \ | |
596 "inline sun.reflect.Reflection.getCallerClass(), known to be part "\ | |
597 "of base library DLL") \ | |
598 \ | |
599 develop(bool, InlineUnsafeOps, true, \ | |
600 "inline memory ops (native methods) from sun.misc.Unsafe") \ | |
601 \ | |
602 develop(bool, ConvertCmpD2CmpF, true, \ | |
603 "Convert cmpD to cmpF when one input is constant in float range") \ | |
604 \ | |
605 develop(bool, ConvertFloat2IntClipping, true, \ | |
606 "Convert float2int clipping idiom to integer clipping") \ | |
607 \ | |
608 develop(bool, SpecialStringCompareTo, true, \ | |
609 "special version of string compareTo") \ | |
610 \ | |
611 develop(bool, SpecialStringIndexOf, true, \ | |
612 "special version of string indexOf") \ | |
613 \ | |
681 | 614 develop(bool, SpecialStringEquals, true, \ |
615 "special version of string equals") \ | |
616 \ | |
617 develop(bool, SpecialArraysEquals, true, \ | |
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618 "special version of Arrays.equals(char[],char[])") \ |
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619 \ |
681 | 620 product(bool, UseSSE42Intrinsics, false, \ |
621 "SSE4.2 versions of intrinsics") \ | |
622 \ | |
3282 | 623 product(bool, UseCondCardMark, false, \ |
624 "Check for already marked card before updating card table") \ | |
625 \ | |
0 | 626 develop(bool, TraceCallFixup, false, \ |
627 "traces all call fixups") \ | |
628 \ | |
629 develop(bool, DeoptimizeALot, false, \ | |
630 "deoptimize at every exit from the runtime system") \ | |
631 \ | |
434 | 632 notproduct(ccstrlist, DeoptimizeOnlyAt, "", \ |
0 | 633 "a comma separated list of bcis to deoptimize at") \ |
634 \ | |
635 product(bool, DeoptimizeRandom, false, \ | |
636 "deoptimize random frames on random exit from the runtime system")\ | |
637 \ | |
638 notproduct(bool, ZombieALot, false, \ | |
639 "creates zombies (non-entrant) at exit from the runt. system") \ | |
640 \ | |
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641 product(bool, UnlinkSymbolsALot, false, \ |
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642 "unlink unreferenced symbols from the symbol table at safepoints")\ |
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643 \ |
0 | 644 notproduct(bool, WalkStackALot, false, \ |
645 "trace stack (no print) at every exit from the runtime system") \ | |
646 \ | |
647 develop(bool, Debugging, false, \ | |
648 "set when executing debug methods in debug.ccp " \ | |
649 "(to prevent triggering assertions)") \ | |
650 \ | |
651 notproduct(bool, StrictSafepointChecks, trueInDebug, \ | |
652 "Enable strict checks that safepoints cannot happen for threads " \ | |
653 "that used No_Safepoint_Verifier") \ | |
654 \ | |
655 notproduct(bool, VerifyLastFrame, false, \ | |
656 "Verify oops on last frame on entry to VM") \ | |
657 \ | |
658 develop(bool, TraceHandleAllocation, false, \ | |
659 "Prints out warnings when suspicious many handles are allocated") \ | |
660 \ | |
661 product(bool, UseCompilerSafepoints, true, \ | |
662 "Stop at safepoints in compiled code") \ | |
663 \ | |
664 product(bool, UseSplitVerifier, true, \ | |
665 "use split verifier with StackMapTable attributes") \ | |
666 \ | |
667 product(bool, FailOverToOldVerifier, true, \ | |
668 "fail over to old verifier when split verifier fails") \ | |
669 \ | |
670 develop(bool, ShowSafepointMsgs, false, \ | |
671 "Show msg. about safepoint synch.") \ | |
672 \ | |
673 product(bool, SafepointTimeout, false, \ | |
674 "Time out and warn or fail after SafepointTimeoutDelay " \ | |
675 "milliseconds if failed to reach safepoint") \ | |
676 \ | |
677 develop(bool, DieOnSafepointTimeout, false, \ | |
678 "Die upon failure to reach safepoint (see SafepointTimeout)") \ | |
679 \ | |
680 /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \ | |
681 /* typically, at most a few retries are needed */ \ | |
682 product(intx, SuspendRetryCount, 50, \ | |
683 "Maximum retry count for an external suspend request") \ | |
684 \ | |
685 product(intx, SuspendRetryDelay, 5, \ | |
686 "Milliseconds to delay per retry (* current_retry_count)") \ | |
687 \ | |
688 product(bool, AssertOnSuspendWaitFailure, false, \ | |
689 "Assert/Guarantee on external suspend wait failure") \ | |
690 \ | |
691 product(bool, TraceSuspendWaitFailures, false, \ | |
692 "Trace external suspend wait failures") \ | |
693 \ | |
694 product(bool, MaxFDLimit, true, \ | |
695 "Bump the number of file descriptors to max in solaris.") \ | |
696 \ | |
697 notproduct(bool, LogEvents, trueInDebug, \ | |
698 "Enable Event log") \ | |
699 \ | |
700 product(bool, BytecodeVerificationRemote, true, \ | |
701 "Enables the Java bytecode verifier for remote classes") \ | |
702 \ | |
703 product(bool, BytecodeVerificationLocal, false, \ | |
704 "Enables the Java bytecode verifier for local classes") \ | |
705 \ | |
706 develop(bool, ForceFloatExceptions, trueInDebug, \ | |
707 "Force exceptions on FP stack under/overflow") \ | |
708 \ | |
709 develop(bool, SoftMatchFailure, trueInProduct, \ | |
710 "If the DFA fails to match a node, print a message and bail out") \ | |
711 \ | |
712 develop(bool, VerifyStackAtCalls, false, \ | |
713 "Verify that the stack pointer is unchanged after calls") \ | |
714 \ | |
715 develop(bool, TraceJavaAssertions, false, \ | |
716 "Trace java language assertions") \ | |
717 \ | |
718 notproduct(bool, CheckAssertionStatusDirectives, false, \ | |
719 "temporary - see javaClasses.cpp") \ | |
720 \ | |
721 notproduct(bool, PrintMallocFree, false, \ | |
722 "Trace calls to C heap malloc/free allocation") \ | |
723 \ | |
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724 product(bool, PrintOopAddress, false, \ |
0 | 725 "Always print the location of the oop") \ |
726 \ | |
727 notproduct(bool, VerifyCodeCacheOften, false, \ | |
728 "Verify compiled-code cache often") \ | |
729 \ | |
730 develop(bool, ZapDeadCompiledLocals, false, \ | |
731 "Zap dead locals in compiler frames") \ | |
732 \ | |
733 notproduct(bool, ZapDeadLocalsOld, false, \ | |
734 "Zap dead locals (old version, zaps all frames when " \ | |
735 "entering the VM") \ | |
736 \ | |
737 notproduct(bool, CheckOopishValues, false, \ | |
738 "Warn if value contains oop ( requires ZapDeadLocals)") \ | |
739 \ | |
740 develop(bool, UseMallocOnly, false, \ | |
741 "use only malloc/free for allocation (no resource area/arena)") \ | |
742 \ | |
743 develop(bool, PrintMalloc, false, \ | |
744 "print all malloc/free calls") \ | |
745 \ | |
2250 | 746 develop(bool, PrintMallocStatistics, false, \ |
747 "print malloc/free statistics") \ | |
748 \ | |
0 | 749 develop(bool, ZapResourceArea, trueInDebug, \ |
750 "Zap freed resource/arena space with 0xABABABAB") \ | |
751 \ | |
752 notproduct(bool, ZapVMHandleArea, trueInDebug, \ | |
753 "Zap freed VM handle space with 0xBCBCBCBC") \ | |
754 \ | |
755 develop(bool, ZapJNIHandleArea, trueInDebug, \ | |
756 "Zap freed JNI handle space with 0xFEFEFEFE") \ | |
757 \ | |
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758 notproduct(bool, ZapStackSegments, trueInDebug, \ |
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759 "Zap allocated/freed Stack segments with 0xFADFADED") \ |
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760 \ |
263
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761 develop(bool, ZapUnusedHeapArea, trueInDebug, \ |
0 | 762 "Zap unused heap space with 0xBAADBABE") \ |
763 \ | |
263
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764 develop(bool, TraceZapUnusedHeapArea, false, \ |
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765 "Trace zapping of unused heap space") \ |
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766 \ |
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767 develop(bool, CheckZapUnusedHeapArea, false, \ |
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768 "Check zapping of unused heap space") \ |
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769 \ |
481
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770 develop(bool, ZapFillerObjects, trueInDebug, \ |
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771 "Zap filler objects with 0xDEAFBABE") \ |
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772 \ |
0 | 773 develop(bool, PrintVMMessages, true, \ |
774 "Print vm messages on console") \ | |
775 \ | |
776 product(bool, PrintGCApplicationConcurrentTime, false, \ | |
777 "Print the time the application has been running") \ | |
778 \ | |
779 product(bool, PrintGCApplicationStoppedTime, false, \ | |
780 "Print the time the application has been stopped") \ | |
781 \ | |
1490
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782 notproduct(uintx, ErrorHandlerTest, 0, \ |
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783 "If > 0, provokes an error after VM initialization; the value" \ |
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784 "determines which error to provoke. See test_error_handler()" \ |
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785 "in debug.cpp.") \ |
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786 \ |
0 | 787 develop(bool, Verbose, false, \ |
788 "Prints additional debugging information from other modes") \ | |
789 \ | |
790 develop(bool, PrintMiscellaneous, false, \ | |
791 "Prints uncategorized debugging information (requires +Verbose)") \ | |
792 \ | |
793 develop(bool, WizardMode, false, \ | |
794 "Prints much more debugging information") \ | |
795 \ | |
796 product(bool, ShowMessageBoxOnError, false, \ | |
797 "Keep process alive on VM fatal error") \ | |
798 \ | |
2204
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799 product(bool, CreateMinidumpOnCrash, false, \ |
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800 "Create minidump on VM fatal error") \ |
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801 \ |
0 | 802 product_pd(bool, UseOSErrorReporting, \ |
803 "Let VM fatal error propagate to the OS (ie. WER on Windows)") \ | |
804 \ | |
805 product(bool, SuppressFatalErrorMessage, false, \ | |
806 "Do NO Fatal Error report [Avoid deadlock]") \ | |
807 \ | |
808 product(ccstrlist, OnError, "", \ | |
809 "Run user-defined commands on fatal error; see VMError.cpp " \ | |
810 "for examples") \ | |
811 \ | |
812 product(ccstrlist, OnOutOfMemoryError, "", \ | |
813 "Run user-defined commands on first java.lang.OutOfMemoryError") \ | |
814 \ | |
615
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815 manageable(bool, HeapDumpBeforeFullGC, false, \ |
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816 "Dump heap to file before any major stop-world GC") \ |
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817 \ |
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818 manageable(bool, HeapDumpAfterFullGC, false, \ |
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819 "Dump heap to file after any major stop-world GC") \ |
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820 \ |
0 | 821 manageable(bool, HeapDumpOnOutOfMemoryError, false, \ |
822 "Dump heap to file when java.lang.OutOfMemoryError is thrown") \ | |
823 \ | |
824 manageable(ccstr, HeapDumpPath, NULL, \ | |
825 "When HeapDumpOnOutOfMemoryError is on, the path (filename or" \ | |
826 "directory) of the dump file (defaults to java_pid<pid>.hprof" \ | |
827 "in the working directory)") \ | |
828 \ | |
829 develop(uintx, SegmentedHeapDumpThreshold, 2*G, \ | |
830 "Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) " \ | |
831 "when the heap usage is larger than this") \ | |
832 \ | |
833 develop(uintx, HeapDumpSegmentSize, 1*G, \ | |
834 "Approximate segment size when generating a segmented heap dump") \ | |
835 \ | |
836 develop(bool, BreakAtWarning, false, \ | |
837 "Execute breakpoint upon encountering VM warning") \ | |
838 \ | |
839 product_pd(bool, UseVectoredExceptions, \ | |
840 "Temp Flag - Use Vectored Exceptions rather than SEH (Windows Only)") \ | |
841 \ | |
842 develop(bool, TraceVMOperation, false, \ | |
843 "Trace vm operations") \ | |
844 \ | |
845 develop(bool, UseFakeTimers, false, \ | |
846 "Tells whether the VM should use system time or a fake timer") \ | |
847 \ | |
848 diagnostic(bool, LogCompilation, false, \ | |
849 "Log compilation activity in detail to hotspot.log or LogFile") \ | |
850 \ | |
851 product(bool, PrintCompilation, false, \ | |
852 "Print compilations") \ | |
853 \ | |
854 diagnostic(bool, TraceNMethodInstalls, false, \ | |
855 "Trace nmethod intallation") \ | |
856 \ | |
2379
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857 diagnostic(intx, ScavengeRootsInCode, 1, \ |
989
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858 "0: do not allow scavengable oops in the code cache; " \ |
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859 "1: allow scavenging from the code cache; " \ |
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860 "2: emit as many constants as the compiler can see") \ |
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861 \ |
0 | 862 diagnostic(bool, TraceOSRBreakpoint, false, \ |
863 "Trace OSR Breakpoint ") \ | |
864 \ | |
865 diagnostic(bool, TraceCompileTriggered, false, \ | |
866 "Trace compile triggered") \ | |
867 \ | |
868 diagnostic(bool, TraceTriggers, false, \ | |
869 "Trace triggers") \ | |
870 \ | |
871 product(bool, AlwaysRestoreFPU, false, \ | |
872 "Restore the FPU control word after every JNI call (expensive)") \ | |
873 \ | |
874 notproduct(bool, PrintCompilation2, false, \ | |
875 "Print additional statistics per compilation") \ | |
876 \ | |
100
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877 diagnostic(bool, PrintAdapterHandlers, false, \ |
0 | 878 "Print code generated for i2c/c2i adapters") \ |
879 \ | |
1207
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880 develop(bool, VerifyAdapterSharing, false, \ |
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|
881 "Verify that the code for shared adapters is the equivalent") \ |
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882 \ |
100
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883 diagnostic(bool, PrintAssembly, false, \ |
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884 "Print assembly code (using external disassembler.so)") \ |
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885 \ |
370
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886 diagnostic(ccstr, PrintAssemblyOptions, NULL, \ |
100
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|
887 "Options string passed to disassembler.so") \ |
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|
888 \ |
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|
889 diagnostic(bool, PrintNMethods, false, \ |
0 | 890 "Print assembly code for nmethods when generated") \ |
891 \ | |
100
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892 diagnostic(bool, PrintNativeNMethods, false, \ |
0 | 893 "Print assembly code for native nmethods when generated") \ |
894 \ | |
895 develop(bool, PrintDebugInfo, false, \ | |
896 "Print debug information for all nmethods when generated") \ | |
897 \ | |
898 develop(bool, PrintRelocations, false, \ | |
899 "Print relocation information for all nmethods when generated") \ | |
900 \ | |
901 develop(bool, PrintDependencies, false, \ | |
902 "Print dependency information for all nmethods when generated") \ | |
903 \ | |
904 develop(bool, PrintExceptionHandlers, false, \ | |
905 "Print exception handler tables for all nmethods when generated") \ | |
906 \ | |
907 develop(bool, InterceptOSException, false, \ | |
908 "Starts debugger when an implicit OS (e.g., NULL) " \ | |
909 "exception happens") \ | |
910 \ | |
911 notproduct(bool, PrintCodeCache, false, \ | |
912 "Print the compiled_code cache when exiting") \ | |
913 \ | |
914 develop(bool, PrintCodeCache2, false, \ | |
915 "Print detailed info on the compiled_code cache when exiting") \ | |
916 \ | |
100
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917 diagnostic(bool, PrintStubCode, false, \ |
0 | 918 "Print generated stub code") \ |
919 \ | |
920 product(bool, StackTraceInThrowable, true, \ | |
921 "Collect backtrace in throwable when exception happens") \ | |
922 \ | |
923 product(bool, OmitStackTraceInFastThrow, true, \ | |
924 "Omit backtraces for some 'hot' exceptions in optimized code") \ | |
925 \ | |
926 product(bool, ProfilerPrintByteCodeStatistics, false, \ | |
927 "Prints byte code statictics when dumping profiler output") \ | |
928 \ | |
929 product(bool, ProfilerRecordPC, false, \ | |
930 "Collects tick for each 16 byte interval of compiled code") \ | |
931 \ | |
1064 | 932 product(bool, ProfileVM, false, \ |
0 | 933 "Profiles ticks that fall within VM (either in the VM Thread " \ |
934 "or VM code called through stubs)") \ | |
935 \ | |
936 product(bool, ProfileIntervals, false, \ | |
937 "Prints profiles for each interval (see ProfileIntervalsTicks)") \ | |
938 \ | |
939 notproduct(bool, ProfilerCheckIntervals, false, \ | |
940 "Collect and print info on spacing of profiler ticks") \ | |
941 \ | |
942 develop(bool, PrintJVMWarnings, false, \ | |
943 "Prints warnings for unimplemented JVM functions") \ | |
944 \ | |
1870
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945 product(bool, PrintWarnings, true, \ |
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946 "Prints JVM warnings to output stream") \ |
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|
947 \ |
0 | 948 notproduct(uintx, WarnOnStalledSpinLock, 0, \ |
949 "Prints warnings for stalled SpinLocks") \ | |
950 \ | |
951 develop(bool, InitializeJavaLangSystem, true, \ | |
952 "Initialize java.lang.System - turn off for individual " \ | |
953 "method debugging") \ | |
954 \ | |
955 develop(bool, InitializeJavaLangString, true, \ | |
956 "Initialize java.lang.String - turn off for individual " \ | |
957 "method debugging") \ | |
958 \ | |
959 develop(bool, InitializeJavaLangExceptionsErrors, true, \ | |
960 "Initialize various error and exception classes - turn off for " \ | |
961 "individual method debugging") \ | |
962 \ | |
963 product(bool, RegisterFinalizersAtInit, true, \ | |
964 "Register finalizable objects at end of Object.<init> or " \ | |
1064 | 965 "after allocation") \ |
0 | 966 \ |
967 develop(bool, RegisterReferences, true, \ | |
968 "Tells whether the VM should register soft/weak/final/phantom " \ | |
969 "references") \ | |
970 \ | |
971 develop(bool, IgnoreRewrites, false, \ | |
972 "Supress rewrites of bytecodes in the oopmap generator. " \ | |
973 "This is unsafe!") \ | |
974 \ | |
975 develop(bool, PrintCodeCacheExtension, false, \ | |
976 "Print extension of code cache") \ | |
977 \ | |
978 develop(bool, UsePrivilegedStack, true, \ | |
979 "Enable the security JVM functions") \ | |
980 \ | |
981 develop(bool, IEEEPrecision, true, \ | |
982 "Enables IEEE precision (for INTEL only)") \ | |
983 \ | |
984 develop(bool, ProtectionDomainVerification, true, \ | |
985 "Verifies protection domain before resolution in system " \ | |
986 "dictionary") \ | |
987 \ | |
988 product(bool, ClassUnloading, true, \ | |
989 "Do unloading of classes") \ | |
990 \ | |
474
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991 diagnostic(bool, LinkWellKnownClasses, false, \ |
132
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992 "Resolve a well known class as soon as its name is seen") \ |
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993 \ |
0 | 994 develop(bool, DisableStartThread, false, \ |
995 "Disable starting of additional Java threads " \ | |
996 "(for debugging only)") \ | |
997 \ | |
998 develop(bool, MemProfiling, false, \ | |
999 "Write memory usage profiling to log file") \ | |
1000 \ | |
1001 notproduct(bool, PrintSystemDictionaryAtExit, false, \ | |
1002 "Prints the system dictionary at exit") \ | |
1003 \ | |
1004 diagnostic(bool, UnsyncloadClass, false, \ | |
514 | 1005 "Unstable: VM calls loadClass unsynchronized. Custom " \ |
1006 "class loader must call VM synchronized for findClass " \ | |
1007 "and defineClass.") \ | |
1008 \ | |
1009 product(bool, AlwaysLockClassLoader, false, \ | |
1010 "Require the VM to acquire the class loader lock before calling " \ | |
1011 "loadClass() even for class loaders registering " \ | |
1064 | 1012 "as parallel capable") \ |
514 | 1013 \ |
1014 product(bool, AllowParallelDefineClass, false, \ | |
1015 "Allow parallel defineClass requests for class loaders " \ | |
1064 | 1016 "registering as parallel capable") \ |
514 | 1017 \ |
1018 product(bool, MustCallLoadClassInternal, false, \ | |
1064 | 1019 "Call loadClassInternal() rather than loadClass()") \ |
0 | 1020 \ |
1021 product_pd(bool, DontYieldALot, \ | |
1022 "Throw away obvious excess yield calls (for SOLARIS only)") \ | |
1023 \ | |
1024 product_pd(bool, ConvertSleepToYield, \ | |
1025 "Converts sleep(0) to thread yield " \ | |
1026 "(may be off for SOLARIS to improve GUI)") \ | |
1027 \ | |
1028 product(bool, ConvertYieldToSleep, false, \ | |
1029 "Converts yield to a sleep of MinSleepInterval to simulate Win32 "\ | |
1030 "behavior (SOLARIS only)") \ | |
1031 \ | |
1032 product(bool, UseBoundThreads, true, \ | |
1033 "Bind user level threads to kernel threads (for SOLARIS only)") \ | |
1034 \ | |
1035 develop(bool, UseDetachedThreads, true, \ | |
1036 "Use detached threads that are recycled upon termination " \ | |
1037 "(for SOLARIS only)") \ | |
1038 \ | |
1039 product(bool, UseLWPSynchronization, true, \ | |
1040 "Use LWP-based instead of libthread-based synchronization " \ | |
1041 "(SPARC only)") \ | |
1042 \ | |
370
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1043 product(ccstr, SyncKnobs, NULL, \ |
0 | 1044 "(Unstable) Various monitor synchronization tunables") \ |
1045 \ | |
1046 product(intx, EmitSync, 0, \ | |
1047 "(Unsafe,Unstable) " \ | |
1048 " Controls emission of inline sync fast-path code") \ | |
1049 \ | |
1050 product(intx, AlwaysInflate, 0, "(Unstable) Force inflation") \ | |
1051 \ | |
1587 | 1052 product(intx, MonitorBound, 0, "Bound Monitor population") \ |
1053 \ | |
1054 product(bool, MonitorInUseLists, false, "Track Monitors for Deflation") \ | |
1055 \ | |
0 | 1056 product(intx, Atomics, 0, \ |
1057 "(Unsafe,Unstable) Diagnostic - Controls emission of atomics") \ | |
1058 \ | |
1059 product(intx, FenceInstruction, 0, \ | |
1060 "(Unsafe,Unstable) Experimental") \ | |
1061 \ | |
1062 product(intx, SyncFlags, 0, "(Unsafe,Unstable) Experimental Sync flags" ) \ | |
1063 \ | |
1064 product(intx, SyncVerbose, 0, "(Unstable)" ) \ | |
1065 \ | |
1066 product(intx, ClearFPUAtPark, 0, "(Unsafe,Unstable)" ) \ | |
1067 \ | |
1068 product(intx, hashCode, 0, \ | |
1069 "(Unstable) select hashCode generation algorithm" ) \ | |
1070 \ | |
1071 product(intx, WorkAroundNPTLTimedWaitHang, 1, \ | |
1072 "(Unstable, Linux-specific)" \ | |
1073 " avoid NPTL-FUTEX hang pthread_cond_timedwait" ) \ | |
1074 \ | |
1064 | 1075 product(bool, FilterSpuriousWakeups, true, \ |
1076 "Prevent spurious or premature wakeups from object.wait " \ | |
1077 "(Solaris only)") \ | |
0 | 1078 \ |
1079 product(intx, NativeMonitorTimeout, -1, "(Unstable)" ) \ | |
1080 product(intx, NativeMonitorFlags, 0, "(Unstable)" ) \ | |
1081 product(intx, NativeMonitorSpinLimit, 20, "(Unstable)" ) \ | |
1082 \ | |
1083 develop(bool, UsePthreads, false, \ | |
1084 "Use pthread-based instead of libthread-based synchronization " \ | |
1085 "(SPARC only)") \ | |
1086 \ | |
1087 product(bool, AdjustConcurrency, false, \ | |
1088 "call thr_setconcurrency at thread create time to avoid " \ | |
1089 "LWP starvation on MP systems (For Solaris Only)") \ | |
1090 \ | |
1091 develop(bool, UpdateHotSpotCompilerFileOnError, true, \ | |
1092 "Should the system attempt to update the compiler file when " \ | |
1093 "an error occurs?") \ | |
1094 \ | |
1095 product(bool, ReduceSignalUsage, false, \ | |
1096 "Reduce the use of OS signals in Java and/or the VM") \ | |
1097 \ | |
1098 notproduct(bool, ValidateMarkSweep, false, \ | |
1099 "Do extra validation during MarkSweep collection") \ | |
1100 \ | |
1101 notproduct(bool, RecordMarkSweepCompaction, false, \ | |
1102 "Enable GC-to-GC recording and querying of compaction during " \ | |
1103 "MarkSweep") \ | |
1104 \ | |
1105 develop_pd(bool, ShareVtableStubs, \ | |
1106 "Share vtable stubs (smaller code but worse branch prediction") \ | |
1107 \ | |
1108 develop(bool, LoadLineNumberTables, true, \ | |
1109 "Tells whether the class file parser loads line number tables") \ | |
1110 \ | |
1111 develop(bool, LoadLocalVariableTables, true, \ | |
1112 "Tells whether the class file parser loads local variable tables")\ | |
1113 \ | |
1114 develop(bool, LoadLocalVariableTypeTables, true, \ | |
1115 "Tells whether the class file parser loads local variable type tables")\ | |
1116 \ | |
1117 product(bool, AllowUserSignalHandlers, false, \ | |
1118 "Do not complain if the application installs signal handlers " \ | |
1119 "(Solaris & Linux only)") \ | |
1120 \ | |
1121 product(bool, UseSignalChaining, true, \ | |
1122 "Use signal-chaining to invoke signal handlers installed " \ | |
1123 "by the application (Solaris & Linux only)") \ | |
1124 \ | |
1125 product(bool, UseAltSigs, false, \ | |
1126 "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \ | |
1064 | 1127 "internal signals (Solaris only)") \ |
0 | 1128 \ |
1129 product(bool, UseSpinning, false, \ | |
1130 "Use spinning in monitor inflation and before entry") \ | |
1131 \ | |
1132 product(bool, PreSpinYield, false, \ | |
1133 "Yield before inner spinning loop") \ | |
1134 \ | |
1135 product(bool, PostSpinYield, true, \ | |
1136 "Yield after inner spinning loop") \ | |
1137 \ | |
1138 product(bool, AllowJNIEnvProxy, false, \ | |
1139 "Allow JNIEnv proxies for jdbx") \ | |
1140 \ | |
1141 product(bool, JNIDetachReleasesMonitors, true, \ | |
1142 "JNI DetachCurrentThread releases monitors owned by thread") \ | |
1143 \ | |
1144 product(bool, RestoreMXCSROnJNICalls, false, \ | |
1145 "Restore MXCSR when returning from JNI calls") \ | |
1146 \ | |
1147 product(bool, CheckJNICalls, false, \ | |
1148 "Verify all arguments to JNI calls") \ | |
1149 \ | |
1150 product(bool, UseFastJNIAccessors, true, \ | |
1151 "Use optimized versions of Get<Primitive>Field") \ | |
1152 \ | |
1153 product(bool, EagerXrunInit, false, \ | |
1154 "Eagerly initialize -Xrun libraries; allows startup profiling, " \ | |
1155 " but not all -Xrun libraries may support the state of the VM at this time") \ | |
1156 \ | |
1157 product(bool, PreserveAllAnnotations, false, \ | |
1158 "Preserve RuntimeInvisibleAnnotations as well as RuntimeVisibleAnnotations") \ | |
1159 \ | |
1160 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \ | |
1161 "Number of OutOfMemoryErrors preallocated with backtrace") \ | |
1162 \ | |
1163 product(bool, LazyBootClassLoader, true, \ | |
1164 "Enable/disable lazy opening of boot class path entries") \ | |
1165 \ | |
1166 diagnostic(bool, UseIncDec, true, \ | |
1167 "Use INC, DEC instructions on x86") \ | |
1168 \ | |
219 | 1169 product(bool, UseNewLongLShift, false, \ |
1170 "Use optimized bitwise shift left") \ | |
1171 \ | |
0 | 1172 product(bool, UseStoreImmI16, true, \ |
1173 "Use store immediate 16-bits value instruction on x86") \ | |
1174 \ | |
1175 product(bool, UseAddressNop, false, \ | |
1176 "Use '0F 1F [addr]' NOP instructions on x86 cpus") \ | |
1177 \ | |
1178 product(bool, UseXmmLoadAndClearUpper, true, \ | |
1179 "Load low part of XMM register and clear upper part") \ | |
1180 \ | |
1181 product(bool, UseXmmRegToRegMoveAll, false, \ | |
1182 "Copy all XMM register bits when moving value between registers") \ | |
1183 \ | |
71 | 1184 product(bool, UseXmmI2D, false, \ |
1185 "Use SSE2 CVTDQ2PD instruction to convert Integer to Double") \ | |
1186 \ | |
1187 product(bool, UseXmmI2F, false, \ | |
1188 "Use SSE2 CVTDQ2PS instruction to convert Integer to Float") \ | |
1189 \ | |
405 | 1190 product(bool, UseXMMForArrayCopy, false, \ |
1191 "Use SSE2 MOVQ instruction for Arraycopy") \ | |
1192 \ | |
1193 product(bool, UseUnalignedLoadStores, false, \ | |
1194 "Use SSE2 MOVDQU instruction for Arraycopy") \ | |
1195 \ | |
0 | 1196 product(intx, FieldsAllocationStyle, 1, \ |
1366
b9d85fcdf743
6940733: allocate non static oop fields in super and sub classes together
kvn
parents:
1365
diff
changeset
|
1197 "0 - type based with oops first, 1 - with oops last, " \ |
b9d85fcdf743
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kvn
parents:
1365
diff
changeset
|
1198 "2 - oops in super and sub classes are together") \ |
0 | 1199 \ |
1200 product(bool, CompactFields, true, \ | |
1201 "Allocate nonstatic fields in gaps between previous fields") \ | |
1202 \ | |
1203 notproduct(bool, PrintCompactFieldsSavings, false, \ | |
1204 "Print how many words were saved with CompactFields") \ | |
1205 \ | |
1206 product(bool, UseBiasedLocking, true, \ | |
1207 "Enable biased locking in JVM") \ | |
1208 \ | |
1209 product(intx, BiasedLockingStartupDelay, 4000, \ | |
1210 "Number of milliseconds to wait before enabling biased locking") \ | |
1211 \ | |
1212 diagnostic(bool, PrintBiasedLockingStatistics, false, \ | |
1213 "Print statistics of biased locking in JVM") \ | |
1214 \ | |
1215 product(intx, BiasedLockingBulkRebiasThreshold, 20, \ | |
1216 "Threshold of number of revocations per type to try to " \ | |
1217 "rebias all objects in the heap of that type") \ | |
1218 \ | |
1219 product(intx, BiasedLockingBulkRevokeThreshold, 40, \ | |
1220 "Threshold of number of revocations per type to permanently " \ | |
1221 "revoke biases of all objects in the heap of that type") \ | |
1222 \ | |
1223 product(intx, BiasedLockingDecayTime, 25000, \ | |
1224 "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \ | |
1225 "type after previous bulk rebias") \ | |
1226 \ | |
2376
c7f3d0b4570f
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parents:
2370
diff
changeset
|
1227 develop(bool, JavaObjectsInPerm, false, \ |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
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parents:
2370
diff
changeset
|
1228 "controls whether Classes and interned Strings are allocated" \ |
c7f3d0b4570f
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parents:
2370
diff
changeset
|
1229 "in perm. This purely intended to allow debugging issues" \ |
c7f3d0b4570f
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parents:
2370
diff
changeset
|
1230 "in production.") \ |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
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parents:
2370
diff
changeset
|
1231 \ |
0 | 1232 /* tracing */ \ |
1233 \ | |
1234 notproduct(bool, TraceRuntimeCalls, false, \ | |
1235 "Trace run-time calls") \ | |
1236 \ | |
1237 develop(bool, TraceJNICalls, false, \ | |
1238 "Trace JNI calls") \ | |
1239 \ | |
1240 notproduct(bool, TraceJVMCalls, false, \ | |
1241 "Trace JVM calls") \ | |
1242 \ | |
370
885fe0f95828
6744783: HotSpot segfaults if given -XX options with an empty string argument
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parents:
325
diff
changeset
|
1243 product(ccstr, TraceJVMTI, NULL, \ |
0 | 1244 "Trace flags for JVMTI functions and events") \ |
1245 \ | |
1246 /* This option can change an EMCP method into an obsolete method. */ \ | |
1247 /* This can affect tests that except specific methods to be EMCP. */ \ | |
1248 /* This option should be used with caution. */ \ | |
1249 product(bool, StressLdcRewrite, false, \ | |
1250 "Force ldc -> ldc_w rewrite during RedefineClasses") \ | |
1251 \ | |
1252 product(intx, TraceRedefineClasses, 0, \ | |
1253 "Trace level for JVMTI RedefineClasses") \ | |
1254 \ | |
1574 | 1255 develop(bool, StressMethodComparator, false, \ |
1256 "run the MethodComparator on all loaded methods") \ | |
1257 \ | |
0 | 1258 /* change to false by default sometime after Mustang */ \ |
1259 product(bool, VerifyMergedCPBytecodes, true, \ | |
1260 "Verify bytecodes after RedefineClasses constant pool merging") \ | |
1261 \ | |
1262 develop(bool, TraceJNIHandleAllocation, false, \ | |
1263 "Trace allocation/deallocation of JNI handle blocks") \ | |
1264 \ | |
1265 develop(bool, TraceThreadEvents, false, \ | |
1266 "Trace all thread events") \ | |
1267 \ | |
1268 develop(bool, TraceBytecodes, false, \ | |
1269 "Trace bytecode execution") \ | |
1270 \ | |
1271 develop(bool, TraceClassInitialization, false, \ | |
1272 "Trace class initialization") \ | |
1273 \ | |
1274 develop(bool, TraceExceptions, false, \ | |
1275 "Trace exceptions") \ | |
1276 \ | |
1277 develop(bool, TraceICs, false, \ | |
1278 "Trace inline cache changes") \ | |
1279 \ | |
1280 notproduct(bool, TraceInvocationCounterOverflow, false, \ | |
1281 "Trace method invocation counter overflow") \ | |
1282 \ | |
1283 develop(bool, TraceInlineCacheClearing, false, \ | |
1284 "Trace clearing of inline caches in nmethods") \ | |
1285 \ | |
1286 develop(bool, TraceDependencies, false, \ | |
1287 "Trace dependencies") \ | |
1288 \ | |
1289 develop(bool, VerifyDependencies, trueInDebug, \ | |
1290 "Exercise and verify the compilation dependency mechanism") \ | |
1291 \ | |
1292 develop(bool, TraceNewOopMapGeneration, false, \ | |
1293 "Trace OopMapGeneration") \ | |
1294 \ | |
1295 develop(bool, TraceNewOopMapGenerationDetailed, false, \ | |
1296 "Trace OopMapGeneration: print detailed cell states") \ | |
1297 \ | |
1298 develop(bool, TimeOopMap, false, \ | |
1299 "Time calls to GenerateOopMap::compute_map() in sum") \ | |
1300 \ | |
1301 develop(bool, TimeOopMap2, false, \ | |
1302 "Time calls to GenerateOopMap::compute_map() individually") \ | |
1303 \ | |
1304 develop(bool, TraceMonitorMismatch, false, \ | |
1305 "Trace monitor matching failures during OopMapGeneration") \ | |
1306 \ | |
1307 develop(bool, TraceOopMapRewrites, false, \ | |
1308 "Trace rewritting of method oops during oop map generation") \ | |
1309 \ | |
1310 develop(bool, TraceSafepoint, false, \ | |
1311 "Trace safepoint operations") \ | |
1312 \ | |
1313 develop(bool, TraceICBuffer, false, \ | |
1314 "Trace usage of IC buffer") \ | |
1315 \ | |
1316 develop(bool, TraceCompiledIC, false, \ | |
1317 "Trace changes of compiled IC") \ | |
1318 \ | |
1319 notproduct(bool, TraceZapDeadLocals, false, \ | |
1320 "Trace zapping dead locals") \ | |
1321 \ | |
1322 develop(bool, TraceStartupTime, false, \ | |
1323 "Trace setup time") \ | |
1324 \ | |
1325 product(ccstr, HPILibPath, NULL, \ | |
1326 "Specify alternate path to HPI library") \ | |
1327 \ | |
1328 develop(bool, TraceProtectionDomainVerification, false, \ | |
1329 "Trace protection domain verifcation") \ | |
1330 \ | |
1331 develop(bool, TraceClearedExceptions, false, \ | |
1332 "Prints when an exception is forcibly cleared") \ | |
1333 \ | |
1334 product(bool, TraceClassResolution, false, \ | |
1335 "Trace all constant pool resolutions (for debugging)") \ | |
1336 \ | |
1337 product(bool, TraceBiasedLocking, false, \ | |
1338 "Trace biased locking in JVM") \ | |
1339 \ | |
1340 product(bool, TraceMonitorInflation, false, \ | |
1341 "Trace monitor inflation in JVM") \ | |
1342 \ | |
1343 /* assembler */ \ | |
1344 product(bool, Use486InstrsOnly, false, \ | |
1345 "Use 80486 Compliant instruction subset") \ | |
1346 \ | |
1347 /* gc */ \ | |
1348 \ | |
1349 product(bool, UseSerialGC, false, \ | |
342
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diff
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|
1350 "Use the serial garbage collector") \ |
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diff
changeset
|
1351 \ |
1193
c81fa70144aa
6919980: G1: remove +UseG1GC from under experimental options (second attempt)
tonyp
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diff
changeset
|
1352 product(bool, UseG1GC, false, \ |
342
37f87013dfd8
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142
diff
changeset
|
1353 "Use the Garbage-First garbage collector") \ |
0 | 1354 \ |
1355 product(bool, UseParallelGC, false, \ | |
1356 "Use the Parallel Scavenge garbage collector") \ | |
1357 \ | |
1358 product(bool, UseParallelOldGC, false, \ | |
1359 "Use the Parallel Old garbage collector") \ | |
1360 \ | |
1361 product(uintx, HeapMaximumCompactionInterval, 20, \ | |
1362 "How often should we maximally compact the heap (not allowing " \ | |
1363 "any dead space)") \ | |
1364 \ | |
1365 product(uintx, HeapFirstMaximumCompactionCount, 3, \ | |
1366 "The collection count for the first maximum compaction") \ | |
1367 \ | |
1368 product(bool, UseMaximumCompactionOnSystemGC, true, \ | |
1369 "In the Parallel Old garbage collector maximum compaction for " \ | |
1370 "a system GC") \ | |
1371 \ | |
1372 product(uintx, ParallelOldDeadWoodLimiterMean, 50, \ | |
1373 "The mean used by the par compact dead wood" \ | |
1374 "limiter (a number between 0-100).") \ | |
1375 \ | |
1376 product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \ | |
1377 "The standard deviation used by the par compact dead wood" \ | |
1378 "limiter (a number between 0-100).") \ | |
1379 \ | |
1380 product(uintx, ParallelGCThreads, 0, \ | |
1381 "Number of parallel threads parallel gc will use") \ | |
1382 \ | |
483
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6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
481
diff
changeset
|
1383 develop(bool, ParallelOldGCSplitALot, false, \ |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
481
diff
changeset
|
1384 "Provoke splitting (copying data from a young gen space to" \ |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
481
diff
changeset
|
1385 "multiple destination spaces)") \ |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
481
diff
changeset
|
1386 \ |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
481
diff
changeset
|
1387 develop(uintx, ParallelOldGCSplitInterval, 3, \ |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
481
diff
changeset
|
1388 "How often to provoke splitting a young gen space") \ |
0 | 1389 \ |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
374
diff
changeset
|
1390 develop(bool, TraceRegionTasksQueuing, false, \ |
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
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374
diff
changeset
|
1391 "Trace the queuing of the region tasks") \ |
0 | 1392 \ |
1284 | 1393 product(uintx, ConcGCThreads, 0, \ |
1394 "Number of threads concurrent gc will use") \ | |
342
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diff
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|
1395 \ |
0 | 1396 product(uintx, YoungPLABSize, 4096, \ |
1397 "Size of young gen promotion labs (in HeapWords)") \ | |
1398 \ | |
1399 product(uintx, OldPLABSize, 1024, \ | |
1400 "Size of old gen promotion labs (in HeapWords)") \ | |
1401 \ | |
1402 product(uintx, GCTaskTimeStampEntries, 200, \ | |
1403 "Number of time stamp entries per gc worker thread") \ | |
1404 \ | |
1405 product(bool, AlwaysTenure, false, \ | |
1406 "Always tenure objects in eden. (ParallelGC only)") \ | |
1407 \ | |
1408 product(bool, NeverTenure, false, \ | |
1064 | 1409 "Never tenure objects in eden, May tenure on overflow " \ |
1410 "(ParallelGC only)") \ | |
0 | 1411 \ |
1412 product(bool, ScavengeBeforeFullGC, true, \ | |
1064 | 1413 "Scavenge youngest generation before each full GC, " \ |
1414 "used with UseParallelGC") \ | |
0 | 1415 \ |
1416 develop(bool, ScavengeWithObjectsInToSpace, false, \ | |
1417 "Allow scavenges to occur when to_space contains objects.") \ | |
1418 \ | |
1419 product(bool, UseConcMarkSweepGC, false, \ | |
1420 "Use Concurrent Mark-Sweep GC in the old generation") \ | |
1421 \ | |
1422 product(bool, ExplicitGCInvokesConcurrent, false, \ | |
1423 "A System.gc() request invokes a concurrent collection;" \ | |
1424 " (effective only when UseConcMarkSweepGC)") \ | |
1425 \ | |
1426 product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \ | |
1064 | 1427 "A System.gc() request invokes a concurrent collection and " \ |
1428 "also unloads classes during such a concurrent gc cycle " \ | |
1429 "(effective only when UseConcMarkSweepGC)") \ | |
0 | 1430 \ |
1520
bb843ebc7c55
6919638: CMS: ExplicitGCInvokesConcurrent misinteracts with gc locker
ysr
parents:
1518
diff
changeset
|
1431 product(bool, GCLockerInvokesConcurrent, false, \ |
bb843ebc7c55
6919638: CMS: ExplicitGCInvokesConcurrent misinteracts with gc locker
ysr
parents:
1518
diff
changeset
|
1432 "The exit of a JNI CS necessitating a scavenge also" \ |
bb843ebc7c55
6919638: CMS: ExplicitGCInvokesConcurrent misinteracts with gc locker
ysr
parents:
1518
diff
changeset
|
1433 " kicks off a bkgrd concurrent collection") \ |
bb843ebc7c55
6919638: CMS: ExplicitGCInvokesConcurrent misinteracts with gc locker
ysr
parents:
1518
diff
changeset
|
1434 \ |
1991
016a3628c885
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
tonyp
parents:
1972
diff
changeset
|
1435 product(uintx, GCLockerEdenExpansionPercent, 5, \ |
016a3628c885
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
tonyp
parents:
1972
diff
changeset
|
1436 "How much the GC can expand the eden by while the GC locker " \ |
016a3628c885
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
tonyp
parents:
1972
diff
changeset
|
1437 "is active (as a percentage)") \ |
016a3628c885
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
tonyp
parents:
1972
diff
changeset
|
1438 \ |
0 | 1439 develop(bool, UseCMSAdaptiveFreeLists, true, \ |
1440 "Use Adaptive Free Lists in the CMS generation") \ | |
1441 \ | |
1442 develop(bool, UseAsyncConcMarkSweepGC, true, \ | |
1443 "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\ | |
1444 \ | |
1445 develop(bool, RotateCMSCollectionTypes, false, \ | |
1446 "Rotate the CMS collections among concurrent and STW") \ | |
1447 \ | |
1448 product(bool, UseCMSBestFit, true, \ | |
1449 "Use CMS best fit allocation strategy") \ | |
1450 \ | |
1451 product(bool, UseCMSCollectionPassing, true, \ | |
1452 "Use passing of collection from background to foreground") \ | |
1453 \ | |
1454 product(bool, UseParNewGC, false, \ | |
1455 "Use parallel threads in the new generation.") \ | |
1456 \ | |
1457 product(bool, ParallelGCVerbose, false, \ | |
1458 "Verbose output for parallel GC.") \ | |
1459 \ | |
1460 product(intx, ParallelGCBufferWastePct, 10, \ | |
1461 "wasted fraction of parallel allocation buffer.") \ | |
1462 \ | |
3357
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
ysr
parents:
3325
diff
changeset
|
1463 diagnostic(bool, ParallelGCRetainPLAB, false, \ |
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
ysr
parents:
3325
diff
changeset
|
1464 "Retain parallel allocation buffers across scavenges; " \ |
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
ysr
parents:
3325
diff
changeset
|
1465 " -- disabled because this currently conflicts with " \ |
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
ysr
parents:
3325
diff
changeset
|
1466 " parallel card scanning under certain conditions ") \ |
0 | 1467 \ |
1468 product(intx, TargetPLABWastePct, 10, \ | |
1469 "target wasted space in last buffer as pct of overall allocation")\ | |
1470 \ | |
1471 product(uintx, PLABWeight, 75, \ | |
1472 "Percentage (0-100) used to weight the current sample when" \ | |
1473 "computing exponentially decaying average for ResizePLAB.") \ | |
1474 \ | |
1475 product(bool, ResizePLAB, true, \ | |
1476 "Dynamically resize (survivor space) promotion labs") \ | |
1477 \ | |
1478 product(bool, PrintPLAB, false, \ | |
1479 "Print (survivor space) promotion labs sizing decisions") \ | |
1480 \ | |
1481 product(intx, ParGCArrayScanChunk, 50, \ | |
1482 "Scan a subset and push remainder, if array is bigger than this") \ | |
1483 \ | |
695 | 1484 product(bool, ParGCUseLocalOverflow, false, \ |
1485 "Instead of a global overflow list, use local overflow stacks") \ | |
1486 \ | |
679
cea947c8a988
6819891: ParNew: Fix work queue overflow code to deal correctly with +UseCompressedOops
ysr
parents:
647
diff
changeset
|
1487 product(bool, ParGCTrimOverflow, true, \ |
695 | 1488 "Eagerly trim the local overflow lists (when ParGCUseLocalOverflow") \ |
679
cea947c8a988
6819891: ParNew: Fix work queue overflow code to deal correctly with +UseCompressedOops
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647
diff
changeset
|
1489 \ |
534 | 1490 notproduct(bool, ParGCWorkQueueOverflowALot, false, \ |
1491 "Whether we should simulate work queue overflow in ParNew") \ | |
1492 \ | |
1493 notproduct(uintx, ParGCWorkQueueOverflowInterval, 1000, \ | |
1064 | 1494 "An `interval' counter that determines how frequently " \ |
1495 "we simulate overflow; a smaller number increases frequency") \ | |
534 | 1496 \ |
1497 product(uintx, ParGCDesiredObjsFromOverflowList, 20, \ | |
0 | 1498 "The desired number of objects to claim from the overflow list") \ |
1499 \ | |
3357
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diff
changeset
|
1500 diagnostic(intx, ParGCStridesPerThread, 2, \ |
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6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
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diff
changeset
|
1501 "The number of strides per worker thread that we divide up the " \ |
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
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diff
changeset
|
1502 "card table scanning work into") \ |
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|
1503 \ |
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
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3325
diff
changeset
|
1504 diagnostic(intx, ParGCCardsPerStrideChunk, 256, \ |
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6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
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3325
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changeset
|
1505 "The number of cards in each chunk of the parallel chunks used " \ |
fc2b798ab316
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diff
changeset
|
1506 "during card table scanning") \ |
fc2b798ab316
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|
1507 \ |
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
ysr
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3325
diff
changeset
|
1508 product(uintx, CMSParPromoteBlocksToClaim, 16, \ |
0 | 1509 "Number of blocks to attempt to claim when refilling CMS LAB for "\ |
1510 "parallel GC.") \ | |
1511 \ | |
1145
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1064
diff
changeset
|
1512 product(uintx, OldPLABWeight, 50, \ |
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diff
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1513 "Percentage (0-100) used to weight the current sample when" \ |
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1514 "computing exponentially decaying average for resizing CMSParPromoteBlocksToClaim.") \ |
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|
1515 \ |
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1516 product(bool, ResizeOldPLAB, true, \ |
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1517 "Dynamically resize (old gen) promotion labs") \ |
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1518 \ |
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1519 product(bool, PrintOldPLAB, false, \ |
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1520 "Print (old gen) promotion labs sizing decisions") \ |
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1521 \ |
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1522 product(uintx, CMSOldPLABMin, 16, \ |
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1523 "Min size of CMS gen promotion lab caches per worker per blksize")\ |
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1524 \ |
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1525 product(uintx, CMSOldPLABMax, 1024, \ |
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1526 "Max size of CMS gen promotion lab caches per worker per blksize")\ |
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1527 \ |
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1528 product(uintx, CMSOldPLABNumRefills, 4, \ |
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1529 "Nominal number of refills of CMS gen promotion lab cache" \ |
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1530 " per worker per block size") \ |
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1531 \ |
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1532 product(bool, CMSOldPLABResizeQuicker, false, \ |
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1533 "Whether to react on-the-fly during a scavenge to a sudden" \ |
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1534 " change in block demand rate") \ |
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1535 \ |
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1536 product(uintx, CMSOldPLABToleranceFactor, 4, \ |
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1537 "The tolerance of the phase-change detector for on-the-fly" \ |
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1538 " PLAB resizing during a scavenge") \ |
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|
1539 \ |
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1540 product(uintx, CMSOldPLABReactivityFactor, 2, \ |
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1541 "The gain in the feedback loop for on-the-fly PLAB resizing" \ |
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1542 " during a scavenge") \ |
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1543 \ |
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1544 product(uintx, CMSOldPLABReactivityCeiling, 10, \ |
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1545 "The clamping of the gain in the feedback loop for on-the-fly" \ |
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1546 " PLAB resizing during a scavenge") \ |
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1547 \ |
0 | 1548 product(bool, AlwaysPreTouch, false, \ |
1549 "It forces all freshly committed pages to be pre-touched.") \ | |
1550 \ | |
2368
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1551 product_pd(intx, CMSYoungGenPerWorker, \ |
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1552 "The maximum size of young gen chosen by default per GC worker " \ |
1064 | 1553 "thread available") \ |
0 | 1554 \ |
342
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1555 product(bool, GCOverheadReporting, false, \ |
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1556 "Enables the GC overhead reporting facility") \ |
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1557 \ |
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1558 product(intx, GCOverheadReportingPeriodMS, 100, \ |
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1559 "Reporting period for conc GC overhead reporting, in ms ") \ |
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1560 \ |
0 | 1561 product(bool, CMSIncrementalMode, false, \ |
1562 "Whether CMS GC should operate in \"incremental\" mode") \ | |
1563 \ | |
1564 product(uintx, CMSIncrementalDutyCycle, 10, \ | |
1565 "CMS incremental mode duty cycle (a percentage, 0-100). If" \ | |
1566 "CMSIncrementalPacing is enabled, then this is just the initial" \ | |
1567 "value") \ | |
1568 \ | |
1569 product(bool, CMSIncrementalPacing, true, \ | |
1570 "Whether the CMS incremental mode duty cycle should be " \ | |
1571 "automatically adjusted") \ | |
1572 \ | |
1573 product(uintx, CMSIncrementalDutyCycleMin, 0, \ | |
1064 | 1574 "Lower bound on the duty cycle when CMSIncrementalPacing is " \ |
1575 "enabled (a percentage, 0-100)") \ | |
0 | 1576 \ |
1577 product(uintx, CMSIncrementalSafetyFactor, 10, \ | |
1064 | 1578 "Percentage (0-100) used to add conservatism when computing the " \ |
1579 "duty cycle") \ | |
0 | 1580 \ |
1581 product(uintx, CMSIncrementalOffset, 0, \ | |
1582 "Percentage (0-100) by which the CMS incremental mode duty cycle" \ | |
1064 | 1583 " is shifted to the right within the period between young GCs") \ |
0 | 1584 \ |
1145
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1585 product(uintx, CMSExpAvgFactor, 50, \ |
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1586 "Percentage (0-100) used to weight the current sample when" \ |
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|
1587 "computing exponential averages for CMS statistics.") \ |
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|
1588 \ |
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1589 product(uintx, CMS_FLSWeight, 75, \ |
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1590 "Percentage (0-100) used to weight the current sample when" \ |
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1591 "computing exponentially decating averages for CMS FLS statistics.") \ |
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|
1592 \ |
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1593 product(uintx, CMS_FLSPadding, 1, \ |
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1594 "The multiple of deviation from mean to use for buffering" \ |
0 | 1595 "against volatility in free list demand.") \ |
1596 \ | |
1597 product(uintx, FLSCoalescePolicy, 2, \ | |
1598 "CMS: Aggression level for coalescing, increasing from 0 to 4") \ | |
1599 \ | |
1145
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1600 product(bool, FLSAlwaysCoalesceLarge, false, \ |
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1601 "CMS: Larger free blocks are always available for coalescing") \ |
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|
1602 \ |
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1603 product(double, FLSLargestBlockCoalesceProximity, 0.99, \ |
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|
1604 "CMS: the smaller the percentage the greater the coalition force")\ |
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|
1605 \ |
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1606 product(double, CMSSmallCoalSurplusPercent, 1.05, \ |
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1607 "CMS: the factor by which to inflate estimated demand of small" \ |
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|
1608 " block sizes to prevent coalescing with an adjoining block") \ |
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|
1609 \ |
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1610 product(double, CMSLargeCoalSurplusPercent, 0.95, \ |
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1611 "CMS: the factor by which to inflate estimated demand of large" \ |
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|
1612 " block sizes to prevent coalescing with an adjoining block") \ |
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|
1613 \ |
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1614 product(double, CMSSmallSplitSurplusPercent, 1.10, \ |
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|
1615 "CMS: the factor by which to inflate estimated demand of small" \ |
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|
1616 " block sizes to prevent splitting to supply demand for smaller" \ |
e018e6884bd8
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|
1617 " blocks") \ |
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|
1618 \ |
e018e6884bd8
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|
1619 product(double, CMSLargeSplitSurplusPercent, 1.00, \ |
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|
1620 "CMS: the factor by which to inflate estimated demand of large" \ |
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|
1621 " block sizes to prevent splitting to supply demand for smaller" \ |
e018e6884bd8
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changeset
|
1622 " blocks") \ |
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|
1623 \ |
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1624 product(bool, CMSExtrapolateSweep, false, \ |
e018e6884bd8
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changeset
|
1625 "CMS: cushion for block demand during sweep") \ |
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|
1626 \ |
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|
1627 product(uintx, CMS_SweepWeight, 75, \ |
1064 | 1628 "Percentage (0-100) used to weight the current sample when " \ |
1629 "computing exponentially decaying average for inter-sweep " \ | |
1630 "duration") \ | |
0 | 1631 \ |
1145
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1632 product(uintx, CMS_SweepPadding, 1, \ |
1064 | 1633 "The multiple of deviation from mean to use for buffering " \ |
0 | 1634 "against volatility in inter-sweep duration.") \ |
1635 \ | |
1636 product(uintx, CMS_SweepTimerThresholdMillis, 10, \ | |
1637 "Skip block flux-rate sampling for an epoch unless inter-sweep " \ | |
1064 | 1638 "duration exceeds this threhold in milliseconds") \ |
0 | 1639 \ |
1640 develop(bool, CMSTraceIncrementalMode, false, \ | |
1641 "Trace CMS incremental mode") \ | |
1642 \ | |
1643 develop(bool, CMSTraceIncrementalPacing, false, \ | |
1644 "Trace CMS incremental mode pacing computation") \ | |
1645 \ | |
1646 develop(bool, CMSTraceThreadState, false, \ | |
1647 "Trace the CMS thread state (enable the trace_state() method)") \ | |
1648 \ | |
1649 product(bool, CMSClassUnloadingEnabled, false, \ | |
1650 "Whether class unloading enabled when using CMS GC") \ | |
1651 \ | |
94
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diff
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|
1652 product(uintx, CMSClassUnloadingMaxInterval, 0, \ |
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diff
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|
1653 "When CMS class unloading is enabled, the maximum CMS cycle count"\ |
0834225a7916
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diff
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|
1654 " for which classes may not be unloaded") \ |
0834225a7916
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diff
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|
1655 \ |
0 | 1656 product(bool, CMSCompactWhenClearAllSoftRefs, true, \ |
1657 "Compact when asked to collect CMS gen with clear_all_soft_refs") \ | |
1658 \ | |
1659 product(bool, UseCMSCompactAtFullCollection, true, \ | |
1660 "Use mark sweep compact at full collections") \ | |
1661 \ | |
1662 product(uintx, CMSFullGCsBeforeCompaction, 0, \ | |
1663 "Number of CMS full collection done before compaction if > 0") \ | |
1664 \ | |
1665 develop(intx, CMSDictionaryChoice, 0, \ | |
1666 "Use BinaryTreeDictionary as default in the CMS generation") \ | |
1667 \ | |
1668 product(uintx, CMSIndexedFreeListReplenish, 4, \ | |
1777
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diff
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|
1669 "Replenish an indexed free list with this number of chunks") \ |
0 | 1670 \ |
1145
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|
1671 product(bool, CMSReplenishIntermediate, true, \ |
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|
1672 "Replenish all intermediate free-list caches") \ |
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|
1673 \ |
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1674 product(bool, CMSSplitIndexedFreeListBlocks, true, \ |
1777
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1749
diff
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|
1675 "When satisfying batched demand, split blocks from the " \ |
1145
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1676 "IndexedFreeList whose size is a multiple of requested size") \ |
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|
1677 \ |
0 | 1678 product(bool, CMSLoopWarn, false, \ |
1679 "Warn in case of excessive CMS looping") \ | |
1680 \ | |
1681 develop(bool, CMSOverflowEarlyRestoration, false, \ | |
1682 "Whether preserved marks should be restored early") \ | |
1683 \ | |
1284 | 1684 product(uintx, MarkStackSize, NOT_LP64(32*K) LP64_ONLY(4*M), \ |
1685 "Size of marking stack") \ | |
1686 \ | |
1687 product(uintx, MarkStackSizeMax, NOT_LP64(4*M) LP64_ONLY(512*M), \ | |
1688 "Max size of marking stack") \ | |
0 | 1689 \ |
1690 notproduct(bool, CMSMarkStackOverflowALot, false, \ | |
1691 "Whether we should simulate frequent marking stack / work queue" \ | |
1692 " overflow") \ | |
1693 \ | |
534 | 1694 notproduct(uintx, CMSMarkStackOverflowInterval, 1000, \ |
1695 "An `interval' counter that determines how frequently" \ | |
0 | 1696 " we simulate overflow; a smaller number increases frequency") \ |
1697 \ | |
1698 product(uintx, CMSMaxAbortablePrecleanLoops, 0, \ | |
1699 "(Temporary, subject to experimentation)" \ | |
1700 "Maximum number of abortable preclean iterations, if > 0") \ | |
1701 \ | |
1702 product(intx, CMSMaxAbortablePrecleanTime, 5000, \ | |
1703 "(Temporary, subject to experimentation)" \ | |
1704 "Maximum time in abortable preclean in ms") \ | |
1705 \ | |
1706 product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \ | |
1707 "(Temporary, subject to experimentation)" \ | |
1708 "Nominal minimum work per abortable preclean iteration") \ | |
1709 \ | |
1887
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1710 manageable(intx, CMSAbortablePrecleanWaitMillis, 100, \ |
0 | 1711 "(Temporary, subject to experimentation)" \ |
1712 " Time that we sleep between iterations when not given" \ | |
1713 " enough work per iteration") \ | |
1714 \ | |
1715 product(uintx, CMSRescanMultiple, 32, \ | |
1716 "Size (in cards) of CMS parallel rescan task") \ | |
1717 \ | |
1718 product(uintx, CMSConcMarkMultiple, 32, \ | |
1719 "Size (in cards) of CMS concurrent MT marking task") \ | |
1720 \ | |
1721 product(uintx, CMSRevisitStackSize, 1*M, \ | |
1722 "Size of CMS KlassKlass revisit stack") \ | |
1723 \ | |
1724 product(bool, CMSAbortSemantics, false, \ | |
1725 "Whether abort-on-overflow semantics is implemented") \ | |
1726 \ | |
1727 product(bool, CMSParallelRemarkEnabled, true, \ | |
1728 "Whether parallel remark enabled (only if ParNewGC)") \ | |
1729 \ | |
1730 product(bool, CMSParallelSurvivorRemarkEnabled, true, \ | |
1731 "Whether parallel remark of survivor space" \ | |
1732 " enabled (effective only if CMSParallelRemarkEnabled)") \ | |
1733 \ | |
1734 product(bool, CMSPLABRecordAlways, true, \ | |
1735 "Whether to always record survivor space PLAB bdries" \ | |
1736 " (effective only if CMSParallelSurvivorRemarkEnabled)") \ | |
1737 \ | |
1738 product(bool, CMSConcurrentMTEnabled, true, \ | |
1739 "Whether multi-threaded concurrent work enabled (if ParNewGC)") \ | |
1740 \ | |
1741 product(bool, CMSPermGenPrecleaningEnabled, true, \ | |
1742 "Whether concurrent precleaning enabled in perm gen" \ | |
1743 " (effective only when CMSPrecleaningEnabled is true)") \ | |
1744 \ | |
1745 product(bool, CMSPrecleaningEnabled, true, \ | |
1746 "Whether concurrent precleaning enabled") \ | |
1747 \ | |
1748 product(uintx, CMSPrecleanIter, 3, \ | |
1749 "Maximum number of precleaning iteration passes") \ | |
1750 \ | |
1751 product(uintx, CMSPrecleanNumerator, 2, \ | |
1752 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ | |
1753 " ratio") \ | |
1754 \ | |
1755 product(uintx, CMSPrecleanDenominator, 3, \ | |
1756 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ | |
1757 " ratio") \ | |
1758 \ | |
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1759 product(bool, CMSPrecleanRefLists1, true, \ |
0 | 1760 "Preclean ref lists during (initial) preclean phase") \ |
1761 \ | |
1762 product(bool, CMSPrecleanRefLists2, false, \ | |
1763 "Preclean ref lists during abortable preclean phase") \ | |
1764 \ | |
1765 product(bool, CMSPrecleanSurvivors1, false, \ | |
1766 "Preclean survivors during (initial) preclean phase") \ | |
1767 \ | |
1768 product(bool, CMSPrecleanSurvivors2, true, \ | |
1769 "Preclean survivors during abortable preclean phase") \ | |
1770 \ | |
1771 product(uintx, CMSPrecleanThreshold, 1000, \ | |
1772 "Don't re-iterate if #dirty cards less than this") \ | |
1773 \ | |
1774 product(bool, CMSCleanOnEnter, true, \ | |
1775 "Clean-on-enter optimization for reducing number of dirty cards") \ | |
1776 \ | |
1777 product(uintx, CMSRemarkVerifyVariant, 1, \ | |
1778 "Choose variant (1,2) of verification following remark") \ | |
1779 \ | |
1780 product(uintx, CMSScheduleRemarkEdenSizeThreshold, 2*M, \ | |
1781 "If Eden used is below this value, don't try to schedule remark") \ | |
1782 \ | |
1783 product(uintx, CMSScheduleRemarkEdenPenetration, 50, \ | |
1784 "The Eden occupancy % at which to try and schedule remark pause") \ | |
1785 \ | |
1786 product(uintx, CMSScheduleRemarkSamplingRatio, 5, \ | |
1787 "Start sampling Eden top at least before yg occupancy reaches" \ | |
1788 " 1/<ratio> of the size at which we plan to schedule remark") \ | |
1789 \ | |
1790 product(uintx, CMSSamplingGrain, 16*K, \ | |
1791 "The minimum distance between eden samples for CMS (see above)") \ | |
1792 \ | |
1793 product(bool, CMSScavengeBeforeRemark, false, \ | |
1794 "Attempt scavenge before the CMS remark step") \ | |
1795 \ | |
1796 develop(bool, CMSTraceSweeper, false, \ | |
1797 "Trace some actions of the CMS sweeper") \ | |
1798 \ | |
1799 product(uintx, CMSWorkQueueDrainThreshold, 10, \ | |
1800 "Don't drain below this size per parallel worker/thief") \ | |
1801 \ | |
1887
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1802 manageable(intx, CMSWaitDuration, 2000, \ |
0 | 1803 "Time in milliseconds that CMS thread waits for young GC") \ |
1804 \ | |
1805 product(bool, CMSYield, true, \ | |
1806 "Yield between steps of concurrent mark & sweep") \ | |
1807 \ | |
1808 product(uintx, CMSBitMapYieldQuantum, 10*M, \ | |
1809 "Bitmap operations should process at most this many bits" \ | |
1810 "between yields") \ | |
1811 \ | |
1145
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1812 product(bool, CMSDumpAtPromotionFailure, false, \ |
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1813 "Dump useful information about the state of the CMS old " \ |
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1814 " generation upon a promotion failure.") \ |
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|
1815 \ |
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|
1816 product(bool, CMSPrintChunksInDump, false, \ |
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1817 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ |
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1818 " more detailed information about the free chunks.") \ |
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|
1819 \ |
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1820 product(bool, CMSPrintObjectsInDump, false, \ |
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1821 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ |
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1822 " more detailed information about the allocated objects.") \ |
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|
1823 \ |
0 | 1824 diagnostic(bool, FLSVerifyAllHeapReferences, false, \ |
1825 "Verify that all refs across the FLS boundary " \ | |
1826 " are to valid objects") \ | |
1827 \ | |
1828 diagnostic(bool, FLSVerifyLists, false, \ | |
1829 "Do lots of (expensive) FreeListSpace verification") \ | |
1830 \ | |
1831 diagnostic(bool, FLSVerifyIndexTable, false, \ | |
1832 "Do lots of (expensive) FLS index table verification") \ | |
1833 \ | |
1834 develop(bool, FLSVerifyDictionary, false, \ | |
1835 "Do lots of (expensive) FLS dictionary verification") \ | |
1836 \ | |
1837 develop(bool, VerifyBlockOffsetArray, false, \ | |
1838 "Do (expensive!) block offset array verification") \ | |
1839 \ | |
3321
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1840 diagnostic(bool, BlockOffsetArrayUseUnallocatedBlock, false, \ |
0 | 1841 "Maintain _unallocated_block in BlockOffsetArray" \ |
1842 " (currently applicable only to CMS collector)") \ | |
1843 \ | |
1844 develop(bool, TraceCMSState, false, \ | |
1845 "Trace the state of the CMS collection") \ | |
1846 \ | |
1847 product(intx, RefDiscoveryPolicy, 0, \ | |
1848 "Whether reference-based(0) or referent-based(1)") \ | |
1849 \ | |
1850 product(bool, ParallelRefProcEnabled, false, \ | |
1851 "Enable parallel reference processing whenever possible") \ | |
1852 \ | |
1853 product(bool, ParallelRefProcBalancingEnabled, true, \ | |
1854 "Enable balancing of reference processing queues") \ | |
1855 \ | |
1856 product(intx, CMSTriggerRatio, 80, \ | |
1857 "Percentage of MinHeapFreeRatio in CMS generation that is " \ | |
1064 | 1858 "allocated before a CMS collection cycle commences") \ |
0 | 1859 \ |
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1860 product(intx, CMSTriggerPermRatio, 80, \ |
1064 | 1861 "Percentage of MinHeapFreeRatio in the CMS perm generation that " \ |
1862 "is allocated before a CMS collection cycle commences, that " \ | |
1863 "also collects the perm generation") \ | |
94
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1864 \ |
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1865 product(uintx, CMSBootstrapOccupancy, 50, \ |
0 | 1866 "Percentage CMS generation occupancy at which to " \ |
1064 | 1867 "initiate CMS collection for bootstrapping collection stats") \ |
0 | 1868 \ |
1869 product(intx, CMSInitiatingOccupancyFraction, -1, \ | |
1870 "Percentage CMS generation occupancy to start a CMS collection " \ | |
1064 | 1871 "cycle. A negative value means that CMSTriggerRatio is used") \ |
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1872 \ |
1283
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1873 product(uintx, InitiatingHeapOccupancyPercent, 45, \ |
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1874 "Percentage of the (entire) heap occupancy to start a " \ |
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1875 "concurrent GC cycle. It us used by GCs that trigger a " \ |
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1876 "concurrent GC cycle based on the occupancy of the entire heap, " \ |
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1877 "not just one of the generations (e.g., G1). A value of 0 " \ |
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1878 "denotes 'do constant GC cycles'.") \ |
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1879 \ |
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1880 product(intx, CMSInitiatingPermOccupancyFraction, -1, \ |
1064 | 1881 "Percentage CMS perm generation occupancy to start a " \ |
1882 "CMScollection cycle. A negative value means that " \ | |
1883 "CMSTriggerPermRatio is used") \ | |
0 | 1884 \ |
1885 product(bool, UseCMSInitiatingOccupancyOnly, false, \ | |
1886 "Only use occupancy as a crierion for starting a CMS collection") \ | |
1887 \ | |
94
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1888 product(intx, CMSIsTooFullPercentage, 98, \ |
1064 | 1889 "An absolute ceiling above which CMS will always consider the " \ |
1890 "perm gen ripe for collection") \ | |
94
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1891 \ |
0 | 1892 develop(bool, CMSTestInFreeList, false, \ |
1893 "Check if the coalesced range is already in the " \ | |
1064 | 1894 "free lists as claimed") \ |
0 | 1895 \ |
1896 notproduct(bool, CMSVerifyReturnedBytes, false, \ | |
1897 "Check that all the garbage collected was returned to the " \ | |
1898 "free lists.") \ | |
1899 \ | |
1900 notproduct(bool, ScavengeALot, false, \ | |
1901 "Force scavenge at every Nth exit from the runtime system " \ | |
1902 "(N=ScavengeALotInterval)") \ | |
1903 \ | |
1904 develop(bool, FullGCALot, false, \ | |
1905 "Force full gc at every Nth exit from the runtime system " \ | |
1906 "(N=FullGCALotInterval)") \ | |
1907 \ | |
1908 notproduct(bool, GCALotAtAllSafepoints, false, \ | |
1909 "Enforce ScavengeALot/GCALot at all potential safepoints") \ | |
1910 \ | |
1145
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1911 product(bool, PrintPromotionFailure, false, \ |
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|
1912 "Print additional diagnostic information following " \ |
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1913 " promotion failure") \ |
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1914 \ |
0 | 1915 notproduct(bool, PromotionFailureALot, false, \ |
1916 "Use promotion failure handling on every youngest generation " \ | |
1917 "collection") \ | |
1918 \ | |
1919 develop(uintx, PromotionFailureALotCount, 1000, \ | |
1920 "Number of promotion failures occurring at ParGCAllocBuffer" \ | |
1921 "refill attempts (ParNew) or promotion attempts " \ | |
1922 "(other young collectors) ") \ | |
1923 \ | |
1924 develop(uintx, PromotionFailureALotInterval, 5, \ | |
1925 "Total collections between promotion failures alot") \ | |
1926 \ | |
1837
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1927 experimental(intx, WorkStealingSleepMillis, 1, \ |
0 | 1928 "Sleep time when sleep is used for yields") \ |
1929 \ | |
2430 | 1930 experimental(uintx, WorkStealingYieldsBeforeSleep, 5000, \ |
0 | 1931 "Number of yields before a sleep is done during workstealing") \ |
1932 \ | |
1837
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1933 experimental(uintx, WorkStealingHardSpins, 4096, \ |
546
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1934 "Number of iterations in a spin loop between checks on " \ |
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1935 "time out of hard spin") \ |
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1936 \ |
1837
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1937 experimental(uintx, WorkStealingSpinToYieldRatio, 10, \ |
546
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1938 "Ratio of hard spins to calls to yield") \ |
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diff
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|
1939 \ |
534 | 1940 product(uintx, PreserveMarkStackSize, 1024, \ |
1064 | 1941 "Size for stack used in promotion failure handling") \ |
0 | 1942 \ |
1311
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1943 develop(uintx, ObjArrayMarkingStride, 512, \ |
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1944 "Number of ObjArray elements to push onto the marking stack" \ |
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|
1945 "before pushing a continuation entry") \ |
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|
1946 \ |
0 | 1947 product_pd(bool, UseTLAB, "Use thread-local object allocation") \ |
1948 \ | |
1949 product_pd(bool, ResizeTLAB, \ | |
1950 "Dynamically resize tlab size for threads") \ | |
1951 \ | |
1952 product(bool, ZeroTLAB, false, \ | |
1953 "Zero out the newly created TLAB") \ | |
1954 \ | |
342
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1955 product(bool, FastTLABRefill, true, \ |
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1956 "Use fast TLAB refill code") \ |
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1957 \ |
0 | 1958 product(bool, PrintTLAB, false, \ |
1959 "Print various TLAB related information") \ | |
1960 \ | |
1961 product(bool, TLABStats, true, \ | |
1962 "Print various TLAB related information") \ | |
1963 \ | |
941 | 1964 product(bool, PrintRevisitStats, false, \ |
1965 "Print revisit (klass and MDO) stack related information") \ | |
1966 \ | |
2192
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1967 EMBEDDED_ONLY(product(bool, LowMemoryProtection, true, \ |
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1968 "Enable LowMemoryProtection")) \ |
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1969 \ |
0 | 1970 product_pd(bool, NeverActAsServerClassMachine, \ |
1971 "Never act like a server-class machine") \ | |
1972 \ | |
1973 product(bool, AlwaysActAsServerClassMachine, false, \ | |
1974 "Always act like a server-class machine") \ | |
1975 \ | |
1064 | 1976 product_pd(uint64_t, MaxRAM, \ |
1977 "Real memory size (in bytes) used to set maximum heap size") \ | |
1978 \ | |
1979 product(uintx, ErgoHeapSizeLimit, 0, \ | |
1980 "Maximum ergonomically set heap size (in bytes); zero means use " \ | |
1981 "MaxRAM / MaxRAMFraction") \ | |
1982 \ | |
1983 product(uintx, MaxRAMFraction, 4, \ | |
1984 "Maximum fraction (1/n) of real memory used for maximum heap " \ | |
1985 "size") \ | |
0 | 1986 \ |
1987 product(uintx, DefaultMaxRAMFraction, 4, \ | |
1064 | 1988 "Maximum fraction (1/n) of real memory used for maximum heap " \ |
1989 "size; deprecated: to be renamed to MaxRAMFraction") \ | |
1990 \ | |
1991 product(uintx, MinRAMFraction, 2, \ | |
1992 "Minimum fraction (1/n) of real memory used for maxmimum heap " \ | |
1993 "size on systems with small physical memory size") \ | |
1994 \ | |
1995 product(uintx, InitialRAMFraction, 64, \ | |
1996 "Fraction (1/n) of real memory used for initial heap size") \ | |
0 | 1997 \ |
1998 product(bool, UseAutoGCSelectPolicy, false, \ | |
1999 "Use automatic collection selection policy") \ | |
2000 \ | |
2001 product(uintx, AutoGCSelectPauseMillis, 5000, \ | |
2002 "Automatic GC selection pause threshhold in ms") \ | |
2003 \ | |
2004 product(bool, UseAdaptiveSizePolicy, true, \ | |
2005 "Use adaptive generation sizing policies") \ | |
2006 \ | |
2007 product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \ | |
2008 "Use adaptive survivor sizing policies") \ | |
2009 \ | |
2010 product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \ | |
2011 "Use adaptive young-old sizing policies at minor collections") \ | |
2012 \ | |
2013 product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \ | |
2014 "Use adaptive young-old sizing policies at major collections") \ | |
2015 \ | |
2016 product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \ | |
2017 "Use statistics from System.GC for adaptive size policy") \ | |
2018 \ | |
2019 product(bool, UseAdaptiveGCBoundary, false, \ | |
2020 "Allow young-old boundary to move") \ | |
2021 \ | |
2022 develop(bool, TraceAdaptiveGCBoundary, false, \ | |
2023 "Trace young-old boundary moves") \ | |
2024 \ | |
2025 develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \ | |
2026 "Resize the virtual spaces of the young or old generations") \ | |
2027 \ | |
2028 product(uintx, AdaptiveSizeThroughPutPolicy, 0, \ | |
2029 "Policy for changeing generation size for throughput goals") \ | |
2030 \ | |
2031 product(uintx, AdaptiveSizePausePolicy, 0, \ | |
2032 "Policy for changing generation size for pause goals") \ | |
2033 \ | |
2034 develop(bool, PSAdjustTenuredGenForMinorPause, false, \ | |
2035 "Adjust tenured generation to achive a minor pause goal") \ | |
2036 \ | |
2037 develop(bool, PSAdjustYoungGenForMajorPause, false, \ | |
2038 "Adjust young generation to achive a major pause goal") \ | |
2039 \ | |
2040 product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \ | |
2041 "Number of steps where heuristics is used before data is used") \ | |
2042 \ | |
2043 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \ | |
2044 "Number of collections before the adaptive sizing is started") \ | |
2045 \ | |
2046 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \ | |
1064 | 2047 "Collecton interval for printing information; zero => never") \ |
0 | 2048 \ |
2049 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \ | |
2050 "Use adaptive minimum footprint as a goal") \ | |
2051 \ | |
2052 product(uintx, AdaptiveSizePolicyWeight, 10, \ | |
2053 "Weight given to exponential resizing, between 0 and 100") \ | |
2054 \ | |
2055 product(uintx, AdaptiveTimeWeight, 25, \ | |
2056 "Weight given to time in adaptive policy, between 0 and 100") \ | |
2057 \ | |
2058 product(uintx, PausePadding, 1, \ | |
2059 "How much buffer to keep for pause time") \ | |
2060 \ | |
2061 product(uintx, PromotedPadding, 3, \ | |
2062 "How much buffer to keep for promotion failure") \ | |
2063 \ | |
2064 product(uintx, SurvivorPadding, 3, \ | |
2065 "How much buffer to keep for survivor overflow") \ | |
2066 \ | |
2067 product(uintx, AdaptivePermSizeWeight, 20, \ | |
2068 "Weight for perm gen exponential resizing, between 0 and 100") \ | |
2069 \ | |
2070 product(uintx, PermGenPadding, 3, \ | |
2071 "How much buffer to keep for perm gen sizing") \ | |
2072 \ | |
2073 product(uintx, ThresholdTolerance, 10, \ | |
2074 "Allowed collection cost difference between generations") \ | |
2075 \ | |
2076 product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \ | |
1064 | 2077 "If collection costs are within margin, reduce both by full " \ |
2078 "delta") \ | |
0 | 2079 \ |
2080 product(uintx, YoungGenerationSizeIncrement, 20, \ | |
2081 "Adaptive size percentage change in young generation") \ | |
2082 \ | |
2083 product(uintx, YoungGenerationSizeSupplement, 80, \ | |
2084 "Supplement to YoungedGenerationSizeIncrement used at startup") \ | |
2085 \ | |
2086 product(uintx, YoungGenerationSizeSupplementDecay, 8, \ | |
2087 "Decay factor to YoungedGenerationSizeSupplement") \ | |
2088 \ | |
2089 product(uintx, TenuredGenerationSizeIncrement, 20, \ | |
2090 "Adaptive size percentage change in tenured generation") \ | |
2091 \ | |
2092 product(uintx, TenuredGenerationSizeSupplement, 80, \ | |
2093 "Supplement to TenuredGenerationSizeIncrement used at startup") \ | |
2094 \ | |
2095 product(uintx, TenuredGenerationSizeSupplementDecay, 2, \ | |
2096 "Decay factor to TenuredGenerationSizeIncrement") \ | |
2097 \ | |
1783 | 2098 product(uintx, MaxGCPauseMillis, max_uintx, \ |
751 | 2099 "Adaptive size policy maximum GC pause time goal in msec, " \ |
2100 "or (G1 Only) the max. GC time per MMU time slice") \ | |
2101 \ | |
1610
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|
2102 product(uintx, GCPauseIntervalMillis, 0, \ |
751 | 2103 "Time slice for MMU specification") \ |
0 | 2104 \ |
2105 product(uintx, MaxGCMinorPauseMillis, max_uintx, \ | |
2106 "Adaptive size policy maximum GC minor pause time goal in msec") \ | |
2107 \ | |
2108 product(uintx, GCTimeRatio, 99, \ | |
2109 "Adaptive size policy application time to GC time ratio") \ | |
2110 \ | |
2111 product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \ | |
2112 "Adaptive size scale down factor for shrinking") \ | |
2113 \ | |
2114 product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \ | |
2115 "Adaptive size decays the major cost for long major intervals") \ | |
2116 \ | |
2117 product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \ | |
2118 "Time scale over which major costs decay") \ | |
2119 \ | |
2120 product(uintx, MinSurvivorRatio, 3, \ | |
2121 "Minimum ratio of young generation/survivor space size") \ | |
2122 \ | |
2123 product(uintx, InitialSurvivorRatio, 8, \ | |
2124 "Initial ratio of eden/survivor space size") \ | |
2125 \ | |
2126 product(uintx, BaseFootPrintEstimate, 256*M, \ | |
2127 "Estimate of footprint other than Java Heap") \ | |
2128 \ | |
2129 product(bool, UseGCOverheadLimit, true, \ | |
2130 "Use policy to limit of proportion of time spent in GC " \ | |
2131 "before an OutOfMemory error is thrown") \ | |
2132 \ | |
2133 product(uintx, GCTimeLimit, 98, \ | |
2134 "Limit of proportion of time spent in GC before an OutOfMemory" \ | |
2135 "error is thrown (used with GCHeapFreeLimit)") \ | |
2136 \ | |
2137 product(uintx, GCHeapFreeLimit, 2, \ | |
2138 "Minimum percentage of free space after a full GC before an " \ | |
2139 "OutOfMemoryError is thrown (used with GCTimeLimit)") \ | |
2140 \ | |
2141 develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \ | |
2142 "Number of consecutive collections before gc time limit fires") \ | |
2143 \ | |
2144 product(bool, PrintAdaptiveSizePolicy, false, \ | |
2145 "Print information about AdaptiveSizePolicy") \ | |
2146 \ | |
2147 product(intx, PrefetchCopyIntervalInBytes, -1, \ | |
2148 "How far ahead to prefetch destination area (<= 0 means off)") \ | |
2149 \ | |
2150 product(intx, PrefetchScanIntervalInBytes, -1, \ | |
2151 "How far ahead to prefetch scan area (<= 0 means off)") \ | |
2152 \ | |
2153 product(intx, PrefetchFieldsAhead, -1, \ | |
2154 "How many fields ahead to prefetch in oop scan (<= 0 means off)") \ | |
2155 \ | |
2156 develop(bool, UsePrefetchQueue, true, \ | |
2157 "Use the prefetch queue during PS promotion") \ | |
2158 \ | |
2159 diagnostic(bool, VerifyBeforeExit, trueInDebug, \ | |
2160 "Verify system before exiting") \ | |
2161 \ | |
2162 diagnostic(bool, VerifyBeforeGC, false, \ | |
2163 "Verify memory system before GC") \ | |
2164 \ | |
2165 diagnostic(bool, VerifyAfterGC, false, \ | |
2166 "Verify memory system after GC") \ | |
2167 \ | |
2168 diagnostic(bool, VerifyDuringGC, false, \ | |
2169 "Verify memory system during GC (between phases)") \ | |
2170 \ | |
390 | 2171 diagnostic(bool, GCParallelVerificationEnabled, true, \ |
2172 "Enable parallel memory system verification") \ | |
2173 \ | |
1166 | 2174 diagnostic(bool, DeferInitialCardMark, false, \ |
2175 "When +ReduceInitialCardMarks, explicitly defer any that " \ | |
2176 "may arise from new_pre_store_barrier") \ | |
2177 \ | |
0 | 2178 diagnostic(bool, VerifyRememberedSets, false, \ |
2179 "Verify GC remembered sets") \ | |
2180 \ | |
2181 diagnostic(bool, VerifyObjectStartArray, true, \ | |
2182 "Verify GC object start array if verify before/after") \ | |
2183 \ | |
2184 product(bool, DisableExplicitGC, false, \ | |
2185 "Tells whether calling System.gc() does a full GC") \ | |
2186 \ | |
2187 notproduct(bool, CheckMemoryInitialization, false, \ | |
2188 "Checks memory initialization") \ | |
2189 \ | |
2190 product(bool, CollectGen0First, false, \ | |
2191 "Collect youngest generation before each full GC") \ | |
2192 \ | |
2193 diagnostic(bool, BindCMSThreadToCPU, false, \ | |
2194 "Bind CMS Thread to CPU if possible") \ | |
2195 \ | |
2196 diagnostic(uintx, CPUForCMSThread, 0, \ | |
2197 "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \ | |
2198 \ | |
2199 product(bool, BindGCTaskThreadsToCPUs, false, \ | |
2200 "Bind GCTaskThreads to CPUs if possible") \ | |
2201 \ | |
2202 product(bool, UseGCTaskAffinity, false, \ | |
2203 "Use worker affinity when asking for GCTasks") \ | |
2204 \ | |
2205 product(uintx, ProcessDistributionStride, 4, \ | |
2206 "Stride through processors when distributing processes") \ | |
2207 \ | |
2208 product(uintx, CMSCoordinatorYieldSleepCount, 10, \ | |
2209 "number of times the coordinator GC thread will sleep while " \ | |
2210 "yielding before giving up and resuming GC") \ | |
2211 \ | |
2212 product(uintx, CMSYieldSleepCount, 0, \ | |
2213 "number of times a GC thread (minus the coordinator) " \ | |
2214 "will sleep while yielding before giving up and resuming GC") \ | |
2215 \ | |
2216 /* gc tracing */ \ | |
2217 manageable(bool, PrintGC, false, \ | |
2218 "Print message at garbage collect") \ | |
2219 \ | |
2220 manageable(bool, PrintGCDetails, false, \ | |
2221 "Print more details at garbage collect") \ | |
2222 \ | |
2223 manageable(bool, PrintGCDateStamps, false, \ | |
2224 "Print date stamps at garbage collect") \ | |
2225 \ | |
2226 manageable(bool, PrintGCTimeStamps, false, \ | |
2227 "Print timestamps at garbage collect") \ | |
2228 \ | |
2229 product(bool, PrintGCTaskTimeStamps, false, \ | |
2230 "Print timestamps for individual gc worker thread tasks") \ | |
2231 \ | |
2232 develop(intx, ConcGCYieldTimeout, 0, \ | |
2233 "If non-zero, assert that GC threads yield within this # of ms.") \ | |
2234 \ | |
2235 notproduct(bool, TraceMarkSweep, false, \ | |
2236 "Trace mark sweep") \ | |
2237 \ | |
2238 product(bool, PrintReferenceGC, false, \ | |
2239 "Print times spent handling reference objects during GC " \ | |
2240 " (enabled only when PrintGCDetails)") \ | |
2241 \ | |
2242 develop(bool, TraceReferenceGC, false, \ | |
2243 "Trace handling of soft/weak/final/phantom references") \ | |
2244 \ | |
2245 develop(bool, TraceFinalizerRegistration, false, \ | |
2246 "Trace registration of final references") \ | |
2247 \ | |
2248 notproduct(bool, TraceScavenge, false, \ | |
2249 "Trace scavenge") \ | |
2250 \ | |
2251 product_rw(bool, TraceClassLoading, false, \ | |
2252 "Trace all classes loaded") \ | |
2253 \ | |
2254 product(bool, TraceClassLoadingPreorder, false, \ | |
2255 "Trace all classes loaded in order referenced (not loaded)") \ | |
2256 \ | |
2257 product_rw(bool, TraceClassUnloading, false, \ | |
2258 "Trace unloading of classes") \ | |
2259 \ | |
2260 product_rw(bool, TraceLoaderConstraints, false, \ | |
2261 "Trace loader constraints") \ | |
2262 \ | |
2263 product(bool, TraceGen0Time, false, \ | |
2264 "Trace accumulated time for Gen 0 collection") \ | |
2265 \ | |
2266 product(bool, TraceGen1Time, false, \ | |
2267 "Trace accumulated time for Gen 1 collection") \ | |
2268 \ | |
2269 product(bool, PrintTenuringDistribution, false, \ | |
2270 "Print tenuring age information") \ | |
2271 \ | |
2272 product_rw(bool, PrintHeapAtGC, false, \ | |
2273 "Print heap layout before and after each GC") \ | |
2274 \ | |
838
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6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
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779
diff
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|
2275 product_rw(bool, PrintHeapAtGCExtended, false, \ |
0316eac49d5a
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
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779
diff
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|
2276 "Prints extended information about the layout of the heap " \ |
0316eac49d5a
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
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diff
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|
2277 "when -XX:+PrintHeapAtGC is set") \ |
0316eac49d5a
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
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diff
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|
2278 \ |
0 | 2279 product(bool, PrintHeapAtSIGBREAK, true, \ |
2280 "Print heap layout in response to SIGBREAK") \ | |
2281 \ | |
615
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
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parents:
570
diff
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|
2282 manageable(bool, PrintClassHistogramBeforeFullGC, false, \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
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parents:
570
diff
changeset
|
2283 "Print a class histogram before any major stop-world GC") \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
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parents:
570
diff
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|
2284 \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
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parents:
570
diff
changeset
|
2285 manageable(bool, PrintClassHistogramAfterFullGC, false, \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
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parents:
570
diff
changeset
|
2286 "Print a class histogram after any major stop-world GC") \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
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parents:
570
diff
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|
2287 \ |
0 | 2288 manageable(bool, PrintClassHistogram, false, \ |
2289 "Print a histogram of class instances") \ | |
2290 \ | |
2291 develop(bool, TraceWorkGang, false, \ | |
2292 "Trace activities of work gangs") \ | |
2293 \ | |
2294 product(bool, TraceParallelOldGCTasks, false, \ | |
2295 "Trace multithreaded GC activity") \ | |
2296 \ | |
2297 develop(bool, TraceBlockOffsetTable, false, \ | |
2298 "Print BlockOffsetTable maps") \ | |
2299 \ | |
2300 develop(bool, TraceCardTableModRefBS, false, \ | |
2301 "Print CardTableModRefBS maps") \ | |
2302 \ | |
2303 develop(bool, TraceGCTaskManager, false, \ | |
2304 "Trace actions of the GC task manager") \ | |
2305 \ | |
2306 develop(bool, TraceGCTaskQueue, false, \ | |
2307 "Trace actions of the GC task queues") \ | |
2308 \ | |
2309 develop(bool, TraceGCTaskThread, false, \ | |
2310 "Trace actions of the GC task threads") \ | |
2311 \ | |
2312 product(bool, PrintParallelOldGCPhaseTimes, false, \ | |
2313 "Print the time taken by each parallel old gc phase." \ | |
2314 "PrintGCDetails must also be enabled.") \ | |
2315 \ | |
2316 develop(bool, TraceParallelOldGCMarkingPhase, false, \ | |
2317 "Trace parallel old gc marking phase") \ | |
2318 \ | |
2319 develop(bool, TraceParallelOldGCSummaryPhase, false, \ | |
2320 "Trace parallel old gc summary phase") \ | |
2321 \ | |
2322 develop(bool, TraceParallelOldGCCompactionPhase, false, \ | |
2323 "Trace parallel old gc compaction phase") \ | |
2324 \ | |
2325 develop(bool, TraceParallelOldGCDensePrefix, false, \ | |
2326 "Trace parallel old gc dense prefix computation") \ | |
2327 \ | |
2328 develop(bool, IgnoreLibthreadGPFault, false, \ | |
2329 "Suppress workaround for libthread GP fault") \ | |
2330 \ | |
139
c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
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diff
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|
2331 product(bool, PrintJNIGCStalls, false, \ |
c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
95
diff
changeset
|
2332 "Print diagnostic message when GC is stalled" \ |
c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
95
diff
changeset
|
2333 "by JNI critical section") \ |
c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
95
diff
changeset
|
2334 \ |
0 | 2335 /* JVMTI heap profiling */ \ |
2336 \ | |
2337 diagnostic(bool, TraceJVMTIObjectTagging, false, \ | |
2338 "Trace JVMTI object tagging calls") \ | |
2339 \ | |
2340 diagnostic(bool, VerifyBeforeIteration, false, \ | |
2341 "Verify memory system before JVMTI iteration") \ | |
2342 \ | |
2343 /* compiler interface */ \ | |
2344 \ | |
2345 develop(bool, CIPrintCompilerName, false, \ | |
2346 "when CIPrint is active, print the name of the active compiler") \ | |
2347 \ | |
2348 develop(bool, CIPrintCompileQueue, false, \ | |
2349 "display the contents of the compile queue whenever a " \ | |
2350 "compilation is enqueued") \ | |
2351 \ | |
2352 develop(bool, CIPrintRequests, false, \ | |
2353 "display every request for compilation") \ | |
2354 \ | |
2355 product(bool, CITime, false, \ | |
2356 "collect timing information for compilation") \ | |
2357 \ | |
2358 develop(bool, CITimeEach, false, \ | |
2359 "display timing information after each successful compilation") \ | |
2360 \ | |
2361 develop(bool, CICountOSR, true, \ | |
2362 "use a separate counter when assigning ids to osr compilations") \ | |
2363 \ | |
2364 develop(bool, CICompileNatives, true, \ | |
2365 "compile native methods if supported by the compiler") \ | |
2366 \ | |
2367 develop_pd(bool, CICompileOSR, \ | |
2368 "compile on stack replacement methods if supported by the " \ | |
2369 "compiler") \ | |
2370 \ | |
2371 develop(bool, CIPrintMethodCodes, false, \ | |
2372 "print method bytecodes of the compiled code") \ | |
2373 \ | |
2374 develop(bool, CIPrintTypeFlow, false, \ | |
2375 "print the results of ciTypeFlow analysis") \ | |
2376 \ | |
2377 develop(bool, CITraceTypeFlow, false, \ | |
2378 "detailed per-bytecode tracing of ciTypeFlow analysis") \ | |
2379 \ | |
2380 develop(intx, CICloneLoopTestLimit, 100, \ | |
2381 "size limit for blocks heuristically cloned in ciTypeFlow") \ | |
2382 \ | |
2403 | 2383 develop(intx, OSROnlyBCI, -1, \ |
2384 "OSR only at this bci. Negative values mean exclude that bci") \ | |
2385 \ | |
0 | 2386 /* temp diagnostics */ \ |
2387 \ | |
2388 diagnostic(bool, TraceRedundantCompiles, false, \ | |
2389 "Have compile broker print when a request already in the queue is"\ | |
2390 " requested again") \ | |
2391 \ | |
2392 diagnostic(bool, InitialCompileFast, false, \ | |
2393 "Initial compile at CompLevel_fast_compile") \ | |
2394 \ | |
2395 diagnostic(bool, InitialCompileReallyFast, false, \ | |
2396 "Initial compile at CompLevel_really_fast_compile (no profile)") \ | |
2397 \ | |
2398 diagnostic(bool, FullProfileOnReInterpret, true, \ | |
2399 "On re-interpret unc-trap compile next at CompLevel_fast_compile")\ | |
2400 \ | |
2401 /* compiler */ \ | |
2402 \ | |
2403 product(intx, CICompilerCount, CI_COMPILER_COUNT, \ | |
2404 "Number of compiler threads to run") \ | |
2405 \ | |
2406 product(intx, CompilationPolicyChoice, 0, \ | |
2407 "which compilation policy (0/1)") \ | |
2408 \ | |
2409 develop(bool, UseStackBanging, true, \ | |
2410 "use stack banging for stack overflow checks (required for " \ | |
2411 "proper StackOverflow handling; disable only to measure cost " \ | |
2412 "of stackbanging)") \ | |
2413 \ | |
2414 develop(bool, Use24BitFPMode, true, \ | |
2415 "Set 24-bit FPU mode on a per-compile basis ") \ | |
2416 \ | |
2417 develop(bool, Use24BitFP, true, \ | |
2418 "use FP instructions that produce 24-bit precise results") \ | |
2419 \ | |
2420 develop(bool, UseStrictFP, true, \ | |
2421 "use strict fp if modifier strictfp is set") \ | |
2422 \ | |
2423 develop(bool, GenerateSynchronizationCode, true, \ | |
2424 "generate locking/unlocking code for synchronized methods and " \ | |
2425 "monitors") \ | |
2426 \ | |
2427 develop(bool, GenerateCompilerNullChecks, true, \ | |
2428 "Generate explicit null checks for loads/stores/calls") \ | |
2429 \ | |
2430 develop(bool, GenerateRangeChecks, true, \ | |
2431 "Generate range checks for array accesses") \ | |
2432 \ | |
2433 develop_pd(bool, ImplicitNullChecks, \ | |
2434 "generate code for implicit null checks") \ | |
2435 \ | |
2436 product(bool, PrintSafepointStatistics, false, \ | |
2437 "print statistics about safepoint synchronization") \ | |
2438 \ | |
2439 product(intx, PrintSafepointStatisticsCount, 300, \ | |
2440 "total number of safepoint statistics collected " \ | |
2441 "before printing them out") \ | |
2442 \ | |
2443 product(intx, PrintSafepointStatisticsTimeout, -1, \ | |
2444 "print safepoint statistics only when safepoint takes" \ | |
2445 " more than PrintSafepointSatisticsTimeout in millis") \ | |
2446 \ | |
1321
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6934758: Expose the break down of clean up task time during safepoint.
xlu
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1288
diff
changeset
|
2447 product(bool, TraceSafepointCleanupTime, false, \ |
0f6600cee529
6934758: Expose the break down of clean up task time during safepoint.
xlu
parents:
1288
diff
changeset
|
2448 "print the break down of clean up tasks performed during" \ |
0f6600cee529
6934758: Expose the break down of clean up task time during safepoint.
xlu
parents:
1288
diff
changeset
|
2449 " safepoint") \ |
0f6600cee529
6934758: Expose the break down of clean up task time during safepoint.
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diff
changeset
|
2450 \ |
0 | 2451 develop(bool, InlineAccessors, true, \ |
2452 "inline accessor methods (get/set)") \ | |
2453 \ | |
2454 product(bool, Inline, true, \ | |
2455 "enable inlining") \ | |
2456 \ | |
2457 product(bool, ClipInlining, true, \ | |
2458 "clip inlining if aggregate method exceeds DesiredMethodLimit") \ | |
2459 \ | |
2460 develop(bool, UseCHA, true, \ | |
2461 "enable CHA") \ | |
2462 \ | |
2463 product(bool, UseTypeProfile, true, \ | |
2464 "Check interpreter profile for historically monomorphic calls") \ | |
2465 \ | |
2466 product(intx, TypeProfileMajorReceiverPercent, 90, \ | |
2467 "% of major receiver type to all profiled receivers") \ | |
2468 \ | |
2469 notproduct(bool, TimeCompiler, false, \ | |
2470 "time the compiler") \ | |
2471 \ | |
2472 notproduct(bool, TimeCompiler2, false, \ | |
2473 "detailed time the compiler (requires +TimeCompiler)") \ | |
2474 \ | |
2475 diagnostic(bool, PrintInlining, false, \ | |
2476 "prints inlining optimizations") \ | |
2477 \ | |
2478 diagnostic(bool, PrintIntrinsics, false, \ | |
2479 "prints attempted and successful inlining of intrinsics") \ | |
2480 \ | |
775
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
726
diff
changeset
|
2481 product(bool, UseCountLeadingZerosInstruction, false, \ |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
726
diff
changeset
|
2482 "Use count leading zeros instruction") \ |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
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726
diff
changeset
|
2483 \ |
643
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
642
diff
changeset
|
2484 product(bool, UsePopCountInstruction, false, \ |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
642
diff
changeset
|
2485 "Use population count instruction") \ |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
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642
diff
changeset
|
2486 \ |
0 | 2487 diagnostic(ccstrlist, DisableIntrinsic, "", \ |
2488 "do not expand intrinsics whose (internal) names appear here") \ | |
2489 \ | |
2490 develop(bool, StressReflectiveCode, false, \ | |
2491 "Use inexact types at allocations, etc., to test reflection") \ | |
2492 \ | |
2493 develop(bool, EagerInitialization, false, \ | |
2494 "Eagerly initialize classes if possible") \ | |
2495 \ | |
2496 develop(bool, TraceMethodReplacement, false, \ | |
2497 "Print when methods are replaced do to recompilation") \ | |
2498 \ | |
2499 develop(bool, PrintMethodFlushing, false, \ | |
2500 "print the nmethods being flushed") \ | |
2501 \ | |
2502 notproduct(bool, LogMultipleMutexLocking, false, \ | |
2503 "log locking and unlocking of mutexes (only if multiple locks " \ | |
2504 "are held)") \ | |
2505 \ | |
2506 develop(bool, UseRelocIndex, false, \ | |
2507 "use an index to speed random access to relocations") \ | |
2508 \ | |
2509 develop(bool, StressCodeBuffers, false, \ | |
2510 "Exercise code buffer expansion and other rare state changes") \ | |
2511 \ | |
2512 diagnostic(bool, DebugNonSafepoints, trueInDebug, \ | |
2513 "Generate extra debugging info for non-safepoints in nmethods") \ | |
2514 \ | |
2515 diagnostic(bool, DebugInlinedCalls, true, \ | |
2516 "If false, restricts profiled locations to the root method only") \ | |
2517 \ | |
2518 product(bool, PrintVMOptions, trueInDebug, \ | |
1150 | 2519 "Print flags that appeared on the command line") \ |
0 | 2520 \ |
564 | 2521 product(bool, IgnoreUnrecognizedVMOptions, false, \ |
2522 "Ignore unrecognized VM options") \ | |
2523 \ | |
1150 | 2524 product(bool, PrintCommandLineFlags, false, \ |
2525 "Print flags specified on command line or set by ergonomics") \ | |
2526 \ | |
2527 product(bool, PrintFlagsInitial, false, \ | |
2528 "Print all VM flags before argument processing and exit VM") \ | |
2529 \ | |
2530 product(bool, PrintFlagsFinal, false, \ | |
2531 "Print all VM flags after argument and ergonomic processing") \ | |
2532 \ | |
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1749
diff
changeset
|
2533 notproduct(bool, PrintFlagsWithComments, false, \ |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1749
diff
changeset
|
2534 "Print all VM flags with default values and descriptions and exit")\ |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1749
diff
changeset
|
2535 \ |
0 | 2536 diagnostic(bool, SerializeVMOutput, true, \ |
2537 "Use a mutex to serialize output to tty and hotspot.log") \ | |
2538 \ | |
2539 diagnostic(bool, DisplayVMOutput, true, \ | |
2540 "Display all VM output on the tty, independently of LogVMOutput") \ | |
2541 \ | |
2542 diagnostic(bool, LogVMOutput, trueInDebug, \ | |
2543 "Save VM output to hotspot.log, or to LogFile") \ | |
2544 \ | |
2545 diagnostic(ccstr, LogFile, NULL, \ | |
2546 "If LogVMOutput is on, save VM output to this file [hotspot.log]") \ | |
2547 \ | |
2548 product(ccstr, ErrorFile, NULL, \ | |
2549 "If an error occurs, save the error data to this file " \ | |
2550 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \ | |
2551 \ | |
2552 product(bool, DisplayVMOutputToStderr, false, \ | |
2553 "If DisplayVMOutput is true, display all VM output to stderr") \ | |
2554 \ | |
2555 product(bool, DisplayVMOutputToStdout, false, \ | |
2556 "If DisplayVMOutput is true, display all VM output to stdout") \ | |
2557 \ | |
2558 product(bool, UseHeavyMonitors, false, \ | |
2559 "use heavyweight instead of lightweight Java monitors") \ | |
2560 \ | |
2561 notproduct(bool, PrintSymbolTableSizeHistogram, false, \ | |
2562 "print histogram of the symbol table") \ | |
2563 \ | |
2564 notproduct(bool, ExitVMOnVerifyError, false, \ | |
2565 "standard exit from VM if bytecode verify error " \ | |
2566 "(only in debug mode)") \ | |
2567 \ | |
2568 notproduct(ccstr, AbortVMOnException, NULL, \ | |
2569 "Call fatal if this exception is thrown. Example: " \ | |
2570 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \ | |
2571 \ | |
1684
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changeset
|
2572 notproduct(ccstr, AbortVMOnExceptionMessage, NULL, \ |
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|
2573 "Call fatal if the exception pointed by AbortVMOnException " \ |
66c5dadb4d61
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diff
changeset
|
2574 "has this message.") \ |
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|
2575 \ |
0 | 2576 develop(bool, DebugVtables, false, \ |
2577 "add debugging code to vtable dispatch") \ | |
2578 \ | |
2579 develop(bool, PrintVtables, false, \ | |
2580 "print vtables when printing klass") \ | |
2581 \ | |
2582 notproduct(bool, PrintVtableStats, false, \ | |
2583 "print vtables stats at end of run") \ | |
2584 \ | |
2585 develop(bool, TraceCreateZombies, false, \ | |
2586 "trace creation of zombie nmethods") \ | |
2587 \ | |
2588 notproduct(bool, IgnoreLockingAssertions, false, \ | |
2589 "disable locking assertions (for speed)") \ | |
2590 \ | |
2591 notproduct(bool, VerifyLoopOptimizations, false, \ | |
2592 "verify major loop optimizations") \ | |
2593 \ | |
2594 product(bool, RangeCheckElimination, true, \ | |
2595 "Split loop iterations to eliminate range checks") \ | |
2596 \ | |
2597 develop_pd(bool, UncommonNullCast, \ | |
2598 "track occurrences of null in casts; adjust compiler tactics") \ | |
2599 \ | |
2600 develop(bool, TypeProfileCasts, true, \ | |
2601 "treat casts like calls for purposes of type profiling") \ | |
2602 \ | |
2603 develop(bool, MonomorphicArrayCheck, true, \ | |
2604 "Uncommon-trap array store checks that require full type check") \ | |
2605 \ | |
1746
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diff
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|
2606 diagnostic(bool, ProfileDynamicTypes, true, \ |
4b29a725c43c
6912064: type profiles need to be exploited more for dynamic language support
jrose
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diff
changeset
|
2607 "do extra type profiling and use it more aggressively") \ |
4b29a725c43c
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jrose
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diff
changeset
|
2608 \ |
0 | 2609 develop(bool, DelayCompilationDuringStartup, true, \ |
2610 "Delay invoking the compiler until main application class is " \ | |
2611 "loaded") \ | |
2612 \ | |
2613 develop(bool, CompileTheWorld, false, \ | |
2614 "Compile all methods in all classes in bootstrap class path " \ | |
2615 "(stress test)") \ | |
2616 \ | |
2617 develop(bool, CompileTheWorldPreloadClasses, true, \ | |
2618 "Preload all classes used by a class before start loading") \ | |
2619 \ | |
1188
99af867dfa05
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kvn
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1179
diff
changeset
|
2620 notproduct(intx, CompileTheWorldSafepointInterval, 100, \ |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
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1179
diff
changeset
|
2621 "Force a safepoint every n compiles so sweeper can keep up") \ |
99af867dfa05
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1179
diff
changeset
|
2622 \ |
0 | 2623 develop(bool, TraceIterativeGVN, false, \ |
2624 "Print progress during Iterative Global Value Numbering") \ | |
2625 \ | |
2626 develop(bool, FillDelaySlots, true, \ | |
2627 "Fill delay slots (on SPARC only)") \ | |
2628 \ | |
2629 develop(bool, VerifyIterativeGVN, false, \ | |
2630 "Verify Def-Use modifications during sparse Iterative Global " \ | |
2631 "Value Numbering") \ | |
2632 \ | |
2633 notproduct(bool, TracePhaseCCP, false, \ | |
2634 "Print progress during Conditional Constant Propagation") \ | |
2635 \ | |
2636 develop(bool, TimeLivenessAnalysis, false, \ | |
2637 "Time computation of bytecode liveness analysis") \ | |
2638 \ | |
2639 develop(bool, TraceLivenessGen, false, \ | |
2640 "Trace the generation of liveness analysis information") \ | |
2641 \ | |
2642 notproduct(bool, TraceLivenessQuery, false, \ | |
2643 "Trace queries of liveness analysis information") \ | |
2644 \ | |
2645 notproduct(bool, CollectIndexSetStatistics, false, \ | |
2646 "Collect information about IndexSets") \ | |
2647 \ | |
2648 develop(bool, PrintDominators, false, \ | |
2649 "Print out dominator trees for GVN") \ | |
2650 \ | |
2651 develop(bool, UseLoopSafepoints, true, \ | |
2652 "Generate Safepoint nodes in every loop") \ | |
2653 \ | |
2654 notproduct(bool, TraceCISCSpill, false, \ | |
2655 "Trace allocators use of cisc spillable instructions") \ | |
2656 \ | |
2657 notproduct(bool, TraceSpilling, false, \ | |
2658 "Trace spilling") \ | |
2659 \ | |
2660 product(bool, SplitIfBlocks, true, \ | |
2661 "Clone compares and control flow through merge points to fold " \ | |
2662 "some branches") \ | |
2663 \ | |
2664 develop(intx, FastAllocateSizeLimit, 128*K, \ | |
2665 /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \ | |
2666 "Inline allocations larger than this in doublewords must go slow")\ | |
2667 \ | |
2668 product(bool, AggressiveOpts, false, \ | |
2669 "Enable aggressive optimizations - see arguments.cpp") \ | |
2670 \ | |
192
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diff
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|
2671 product(bool, UseStringCache, false, \ |
6d13fcb3663f
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kvn
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174
diff
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|
2672 "Enable String cache capabilities on String.java") \ |
6d13fcb3663f
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kvn
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174
diff
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|
2673 \ |
0 | 2674 /* statistics */ \ |
2675 develop(bool, CountCompiledCalls, false, \ | |
2676 "counts method invocations") \ | |
2677 \ | |
2678 notproduct(bool, CountRuntimeCalls, false, \ | |
2679 "counts VM runtime calls") \ | |
2680 \ | |
2681 develop(bool, CountJNICalls, false, \ | |
2682 "counts jni method invocations") \ | |
2683 \ | |
2684 notproduct(bool, CountJVMCalls, false, \ | |
2685 "counts jvm method invocations") \ | |
2686 \ | |
2687 notproduct(bool, CountRemovableExceptions, false, \ | |
2688 "count exceptions that could be replaced by branches due to " \ | |
2689 "inlining") \ | |
2690 \ | |
2691 notproduct(bool, ICMissHistogram, false, \ | |
2692 "produce histogram of IC misses") \ | |
2693 \ | |
2694 notproduct(bool, PrintClassStatistics, false, \ | |
2695 "prints class statistics at end of run") \ | |
2696 \ | |
2697 notproduct(bool, PrintMethodStatistics, false, \ | |
2698 "prints method statistics at end of run") \ | |
2699 \ | |
2700 /* interpreter */ \ | |
2701 develop(bool, ClearInterpreterLocals, false, \ | |
2702 "Always clear local variables of interpreter activations upon " \ | |
2703 "entry") \ | |
2704 \ | |
2705 product_pd(bool, RewriteBytecodes, \ | |
2706 "Allow rewriting of bytecodes (bytecodes are not immutable)") \ | |
2707 \ | |
2708 product_pd(bool, RewriteFrequentPairs, \ | |
2709 "Rewrite frequently used bytecode pairs into a single bytecode") \ | |
2710 \ | |
100
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jrose
parents:
76
diff
changeset
|
2711 diagnostic(bool, PrintInterpreter, false, \ |
0 | 2712 "Prints the generated interpreter code") \ |
2713 \ | |
2714 product(bool, UseInterpreter, true, \ | |
2715 "Use interpreter for non-compiled methods") \ | |
2716 \ | |
2717 develop(bool, UseFastSignatureHandlers, true, \ | |
2718 "Use fast signature handlers for native calls") \ | |
2719 \ | |
2720 develop(bool, UseV8InstrsOnly, false, \ | |
2721 "Use SPARC-V8 Compliant instruction subset") \ | |
2722 \ | |
2723 product(bool, UseNiagaraInstrs, false, \ | |
2724 "Use Niagara-efficient instruction subset") \ | |
2725 \ | |
2726 develop(bool, UseCASForSwap, false, \ | |
2727 "Do not use swap instructions, but only CAS (in a loop) on SPARC")\ | |
2728 \ | |
2729 product(bool, UseLoopCounter, true, \ | |
2730 "Increment invocation counter on backward branch") \ | |
2731 \ | |
2732 product(bool, UseFastEmptyMethods, true, \ | |
2733 "Use fast method entry code for empty methods") \ | |
2734 \ | |
2735 product(bool, UseFastAccessorMethods, true, \ | |
2736 "Use fast method entry code for accessor methods") \ | |
2737 \ | |
2738 product_pd(bool, UseOnStackReplacement, \ | |
2739 "Use on stack replacement, calls runtime if invoc. counter " \ | |
2740 "overflows in loop") \ | |
2741 \ | |
2742 notproduct(bool, TraceOnStackReplacement, false, \ | |
2743 "Trace on stack replacement") \ | |
2744 \ | |
2745 develop(bool, PoisonOSREntry, true, \ | |
2746 "Detect abnormal calls to OSR code") \ | |
2747 \ | |
2748 product_pd(bool, PreferInterpreterNativeStubs, \ | |
2749 "Use always interpreter stubs for native methods invoked via " \ | |
2750 "interpreter") \ | |
2751 \ | |
2752 develop(bool, CountBytecodes, false, \ | |
2753 "Count number of bytecodes executed") \ | |
2754 \ | |
2755 develop(bool, PrintBytecodeHistogram, false, \ | |
2756 "Print histogram of the executed bytecodes") \ | |
2757 \ | |
2758 develop(bool, PrintBytecodePairHistogram, false, \ | |
2759 "Print histogram of the executed bytecode pairs") \ | |
2760 \ | |
100
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jrose
parents:
76
diff
changeset
|
2761 diagnostic(bool, PrintSignatureHandlers, false, \ |
0 | 2762 "Print code generated for native method signature handlers") \ |
2763 \ | |
2764 develop(bool, VerifyOops, false, \ | |
2765 "Do plausibility checks for oops") \ | |
2766 \ | |
2767 develop(bool, CheckUnhandledOops, false, \ | |
2768 "Check for unhandled oops in VM code") \ | |
2769 \ | |
2770 develop(bool, VerifyJNIFields, trueInDebug, \ | |
2771 "Verify jfieldIDs for instance fields") \ | |
2772 \ | |
2773 notproduct(bool, VerifyJNIEnvThread, false, \ | |
2774 "Verify JNIEnv.thread == Thread::current() when entering VM " \ | |
2775 "from JNI") \ | |
2776 \ | |
2777 develop(bool, VerifyFPU, false, \ | |
2778 "Verify FPU state (check for NaN's, etc.)") \ | |
2779 \ | |
2780 develop(bool, VerifyThread, false, \ | |
2781 "Watch the thread register for corruption (SPARC only)") \ | |
2782 \ | |
2783 develop(bool, VerifyActivationFrameSize, false, \ | |
2784 "Verify that activation frame didn't become smaller than its " \ | |
2785 "minimal size") \ | |
2786 \ | |
2787 develop(bool, TraceFrequencyInlining, false, \ | |
2788 "Trace frequency based inlining") \ | |
2789 \ | |
2790 notproduct(bool, TraceTypeProfile, false, \ | |
2791 "Trace type profile") \ | |
2792 \ | |
2793 develop_pd(bool, InlineIntrinsics, \ | |
2794 "Inline intrinsics that can be statically resolved") \ | |
2795 \ | |
2796 product_pd(bool, ProfileInterpreter, \ | |
2797 "Profile at the bytecode level during interpretation") \ | |
2798 \ | |
2799 develop_pd(bool, ProfileTraps, \ | |
2800 "Profile deoptimization traps at the bytecode level") \ | |
2801 \ | |
2802 product(intx, ProfileMaturityPercentage, 20, \ | |
2803 "number of method invocations/branches (expressed as % of " \ | |
2804 "CompileThreshold) before using the method's profile") \ | |
2805 \ | |
2806 develop(bool, PrintMethodData, false, \ | |
2807 "Print the results of +ProfileInterpreter at end of run") \ | |
2808 \ | |
2809 develop(bool, VerifyDataPointer, trueInDebug, \ | |
2810 "Verify the method data pointer during interpreter profiling") \ | |
2811 \ | |
2812 develop(bool, VerifyCompiledCode, false, \ | |
2813 "Include miscellaneous runtime verifications in nmethod code; " \ | |
1064 | 2814 "default off because it disturbs nmethod size heuristics") \ |
0 | 2815 \ |
1119
547f81740344
6361589: Print out stack trace for target thread of GC crash
minqi
parents:
1064
diff
changeset
|
2816 notproduct(bool, CrashGCForDumpingJavaThread, false, \ |
547f81740344
6361589: Print out stack trace for target thread of GC crash
minqi
parents:
1064
diff
changeset
|
2817 "Manually make GC thread crash then dump java stack trace; " \ |
547f81740344
6361589: Print out stack trace for target thread of GC crash
minqi
parents:
1064
diff
changeset
|
2818 "Test only") \ |
0 | 2819 \ |
2820 /* compilation */ \ | |
2821 product(bool, UseCompiler, true, \ | |
2822 "use compilation") \ | |
2823 \ | |
2824 develop(bool, TraceCompilationPolicy, false, \ | |
2825 "Trace compilation policy") \ | |
2826 \ | |
2827 develop(bool, TimeCompilationPolicy, false, \ | |
2828 "Time the compilation policy") \ | |
2829 \ | |
2830 product(bool, UseCounterDecay, true, \ | |
2831 "adjust recompilation counters") \ | |
2832 \ | |
2833 develop(intx, CounterHalfLifeTime, 30, \ | |
2834 "half-life time of invocation counters (in secs)") \ | |
2835 \ | |
2836 develop(intx, CounterDecayMinIntervalLength, 500, \ | |
2837 "Min. ms. between invocation of CounterDecay") \ | |
2838 \ | |
2839 product(bool, AlwaysCompileLoopMethods, false, \ | |
2840 "when using recompilation, never interpret methods " \ | |
2841 "containing loops") \ | |
2842 \ | |
2843 product(bool, DontCompileHugeMethods, true, \ | |
2844 "don't compile methods > HugeMethodLimit") \ | |
2845 \ | |
2846 /* Bytecode escape analysis estimation. */ \ | |
2847 product(bool, EstimateArgEscape, true, \ | |
2848 "Analyze bytecodes to estimate escape state of arguments") \ | |
2849 \ | |
2850 product(intx, BCEATraceLevel, 0, \ | |
2851 "How much tracing to do of bytecode escape analysis estimates") \ | |
2852 \ | |
2853 product(intx, MaxBCEAEstimateLevel, 5, \ | |
2854 "Maximum number of nested calls that are analyzed by BC EA.") \ | |
2855 \ | |
2856 product(intx, MaxBCEAEstimateSize, 150, \ | |
2857 "Maximum bytecode size of a method to be analyzed by BC EA.") \ | |
2858 \ | |
2859 product(intx, AllocatePrefetchStyle, 1, \ | |
2860 "0 = no prefetch, " \ | |
2861 "1 = prefetch instructions for each allocation, " \ | |
1367
9e321dcfa5b7
6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents:
1366
diff
changeset
|
2862 "2 = use TLAB watermark to gate allocation prefetch, " \ |
9e321dcfa5b7
6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents:
1366
diff
changeset
|
2863 "3 = use BIS instruction on Sparc for allocation prefetch") \ |
0 | 2864 \ |
2865 product(intx, AllocatePrefetchDistance, -1, \ | |
2866 "Distance to prefetch ahead of allocation pointer") \ | |
2867 \ | |
2868 product(intx, AllocatePrefetchLines, 1, \ | |
2869 "Number of lines to prefetch ahead of allocation pointer") \ | |
2870 \ | |
2871 product(intx, AllocatePrefetchStepSize, 16, \ | |
2872 "Step size in bytes of sequential prefetch instructions") \ | |
2873 \ | |
2874 product(intx, AllocatePrefetchInstr, 0, \ | |
2875 "Prefetch instruction to prefetch ahead of allocation pointer") \ | |
2876 \ | |
2877 product(intx, ReadPrefetchInstr, 0, \ | |
2878 "Prefetch instruction to prefetch ahead") \ | |
2879 \ | |
2880 /* deoptimization */ \ | |
2881 develop(bool, TraceDeoptimization, false, \ | |
2882 "Trace deoptimization") \ | |
2883 \ | |
2884 develop(bool, DebugDeoptimization, false, \ | |
2885 "Tracing various information while debugging deoptimization") \ | |
2886 \ | |
2887 product(intx, SelfDestructTimer, 0, \ | |
2888 "Will cause VM to terminate after a given time (in minutes) " \ | |
2889 "(0 means off)") \ | |
2890 \ | |
2891 product(intx, MaxJavaStackTraceDepth, 1024, \ | |
2892 "Max. no. of lines in the stack trace for Java exceptions " \ | |
2893 "(0 means all)") \ | |
2894 \ | |
3328
277d0f6ca64d
7005503: Make GuaranteedSafepointInterval a diagnostic flag
kevinw
parents:
3255
diff
changeset
|
2895 NOT_EMBEDDED(diagnostic(intx, GuaranteedSafepointInterval, 1000, \ |
0 | 2896 "Guarantee a safepoint (at least) every so many milliseconds " \ |
2192
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
2897 "(0 means none)")) \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
2898 \ |
b92c45f2bc75
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bobv
parents:
2177
diff
changeset
|
2899 EMBEDDED_ONLY(product(intx, GuaranteedSafepointInterval, 0, \ |
b92c45f2bc75
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parents:
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diff
changeset
|
2900 "Guarantee a safepoint (at least) every so many milliseconds " \ |
b92c45f2bc75
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bobv
parents:
2177
diff
changeset
|
2901 "(0 means none)")) \ |
0 | 2902 \ |
2903 product(intx, SafepointTimeoutDelay, 10000, \ | |
2904 "Delay in milliseconds for option SafepointTimeout") \ | |
2905 \ | |
2906 product(intx, NmethodSweepFraction, 4, \ | |
2907 "Number of invocations of sweeper to cover all nmethods") \ | |
2908 \ | |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
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parents:
1513
diff
changeset
|
2909 product(intx, NmethodSweepCheckInterval, 5, \ |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1513
diff
changeset
|
2910 "Compilers wake up every n seconds to possibly sweep nmethods") \ |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1513
diff
changeset
|
2911 \ |
3384
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parents:
3373
diff
changeset
|
2912 notproduct(bool, LogSweeper, false, \ |
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
2913 "Keep a ring buffer of sweeper activity") \ |
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
2914 \ |
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
2915 notproduct(intx, SweeperLogEntries, 1024, \ |
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
2916 "Number of records in the ring buffer of sweeper activity") \ |
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
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parents:
3373
diff
changeset
|
2917 \ |
0 | 2918 notproduct(intx, MemProfilingInterval, 500, \ |
2919 "Time between each invocation of the MemProfiler") \ | |
2920 \ | |
2921 develop(intx, MallocCatchPtr, -1, \ | |
2922 "Hit breakpoint when mallocing/freeing this pointer") \ | |
2923 \ | |
2924 notproduct(intx, AssertRepeat, 1, \ | |
2925 "number of times to evaluate expression in assert " \ | |
2926 "(to estimate overhead); only works with -DUSE_REPEATED_ASSERTS") \ | |
2927 \ | |
2928 notproduct(ccstrlist, SuppressErrorAt, "", \ | |
2929 "List of assertions (file:line) to muzzle") \ | |
2930 \ | |
2931 notproduct(uintx, HandleAllocationLimit, 1024, \ | |
2932 "Threshold for HandleMark allocation when +TraceHandleAllocation "\ | |
2933 "is used") \ | |
2934 \ | |
2935 develop(uintx, TotalHandleAllocationLimit, 1024, \ | |
2936 "Threshold for total handle allocation when " \ | |
2937 "+TraceHandleAllocation is used") \ | |
2938 \ | |
2939 develop(intx, StackPrintLimit, 100, \ | |
2940 "number of stack frames to print in VM-level stack dump") \ | |
2941 \ | |
2942 notproduct(intx, MaxElementPrintSize, 256, \ | |
2943 "maximum number of elements to print") \ | |
2944 \ | |
2945 notproduct(intx, MaxSubklassPrintSize, 4, \ | |
2946 "maximum number of subklasses to print when printing klass") \ | |
2947 \ | |
1157
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jrose
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1150
diff
changeset
|
2948 product(intx, MaxInlineLevel, 9, \ |
0 | 2949 "maximum number of nested calls that are inlined") \ |
2950 \ | |
1157
c3b315a0d58a
6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents:
1150
diff
changeset
|
2951 product(intx, MaxRecursiveInlineLevel, 1, \ |
0 | 2952 "maximum number of nested recursive calls that are inlined") \ |
2953 \ | |
675 | 2954 product_pd(intx, InlineSmallCode, \ |
0 | 2955 "Only inline already compiled methods if their code size is " \ |
2956 "less than this") \ | |
2957 \ | |
2958 product(intx, MaxInlineSize, 35, \ | |
2959 "maximum bytecode size of a method to be inlined") \ | |
2960 \ | |
2961 product_pd(intx, FreqInlineSize, \ | |
2962 "maximum bytecode size of a frequent method to be inlined") \ | |
2963 \ | |
1157
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jrose
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1150
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changeset
|
2964 product(intx, MaxTrivialSize, 6, \ |
0 | 2965 "maximum bytecode size of a trivial method to be inlined") \ |
2966 \ | |
1157
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diff
changeset
|
2967 product(intx, MinInliningThreshold, 250, \ |
0 | 2968 "min. invocation count a method needs to have to be inlined") \ |
2969 \ | |
2970 develop(intx, AlignEntryCode, 4, \ | |
2971 "aligns entry code to specified value (in bytes)") \ | |
2972 \ | |
2973 develop(intx, MethodHistogramCutoff, 100, \ | |
2974 "cutoff value for method invoc. histogram (+CountCalls)") \ | |
2975 \ | |
2976 develop(intx, ProfilerNumberOfInterpretedMethods, 25, \ | |
2977 "# of interpreted methods to show in profile") \ | |
2978 \ | |
2979 develop(intx, ProfilerNumberOfCompiledMethods, 25, \ | |
2980 "# of compiled methods to show in profile") \ | |
2981 \ | |
2982 develop(intx, ProfilerNumberOfStubMethods, 25, \ | |
2983 "# of stub methods to show in profile") \ | |
2984 \ | |
2985 develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \ | |
2986 "# of runtime stub nodes to show in profile") \ | |
2987 \ | |
2988 product(intx, ProfileIntervalsTicks, 100, \ | |
2989 "# of ticks between printing of interval profile " \ | |
2990 "(+ProfileIntervals)") \ | |
2991 \ | |
2992 notproduct(intx, ScavengeALotInterval, 1, \ | |
2993 "Interval between which scavenge will occur with +ScavengeALot") \ | |
2994 \ | |
2995 notproduct(intx, FullGCALotInterval, 1, \ | |
2996 "Interval between which full gc will occur with +FullGCALot") \ | |
2997 \ | |
2998 notproduct(intx, FullGCALotStart, 0, \ | |
2999 "For which invocation to start FullGCAlot") \ | |
3000 \ | |
3001 notproduct(intx, FullGCALotDummies, 32*K, \ | |
3002 "Dummy object allocated with +FullGCALot, forcing all objects " \ | |
3003 "to move") \ | |
3004 \ | |
3005 develop(intx, DontYieldALotInterval, 10, \ | |
3006 "Interval between which yields will be dropped (milliseconds)") \ | |
3007 \ | |
3008 develop(intx, MinSleepInterval, 1, \ | |
3009 "Minimum sleep() interval (milliseconds) when " \ | |
3010 "ConvertSleepToYield is off (used for SOLARIS)") \ | |
3011 \ | |
3012 product(intx, EventLogLength, 2000, \ | |
3013 "maximum nof events in event log") \ | |
3014 \ | |
3015 develop(intx, ProfilerPCTickThreshold, 15, \ | |
3016 "Number of ticks in a PC buckets to be a hotspot") \ | |
3017 \ | |
3018 notproduct(intx, DeoptimizeALotInterval, 5, \ | |
3019 "Number of exits until DeoptimizeALot kicks in") \ | |
3020 \ | |
3021 notproduct(intx, ZombieALotInterval, 5, \ | |
3022 "Number of exits until ZombieALot kicks in") \ | |
3023 \ | |
3024 develop(bool, StressNonEntrant, false, \ | |
3025 "Mark nmethods non-entrant at registration") \ | |
3026 \ | |
3027 diagnostic(intx, MallocVerifyInterval, 0, \ | |
3028 "if non-zero, verify C heap after every N calls to " \ | |
3029 "malloc/realloc/free") \ | |
3030 \ | |
3031 diagnostic(intx, MallocVerifyStart, 0, \ | |
3032 "if non-zero, start verifying C heap after Nth call to " \ | |
3033 "malloc/realloc/free") \ | |
3034 \ | |
1783 | 3035 product(intx, TypeProfileWidth, 2, \ |
0 | 3036 "number of receiver types to record in call/cast profile") \ |
3037 \ | |
3038 develop(intx, BciProfileWidth, 2, \ | |
3039 "number of return bci's to record in ret profile") \ | |
3040 \ | |
3041 product(intx, PerMethodRecompilationCutoff, 400, \ | |
3042 "After recompiling N times, stay in the interpreter (-1=>'Inf')") \ | |
3043 \ | |
1206
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1202
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|
3044 product(intx, PerBytecodeRecompilationCutoff, 200, \ |
0 | 3045 "Per-BCI limit on repeated recompilation (-1=>'Inf')") \ |
3046 \ | |
3047 product(intx, PerMethodTrapLimit, 100, \ | |
3048 "Limit on traps (of one kind) in a method (includes inlines)") \ | |
3049 \ | |
3050 product(intx, PerBytecodeTrapLimit, 4, \ | |
3051 "Limit on traps (of one kind) at a particular BCI") \ | |
3052 \ | |
3053 develop(intx, FreqCountInvocations, 1, \ | |
3054 "Scaling factor for branch frequencies (deprecated)") \ | |
3055 \ | |
3056 develop(intx, InlineFrequencyRatio, 20, \ | |
3057 "Ratio of call site execution to caller method invocation") \ | |
3058 \ | |
3059 develop_pd(intx, InlineFrequencyCount, \ | |
3060 "Count of call site execution necessary to trigger frequent " \ | |
3061 "inlining") \ | |
3062 \ | |
3063 develop(intx, InlineThrowCount, 50, \ | |
3064 "Force inlining of interpreted methods that throw this often") \ | |
3065 \ | |
3066 develop(intx, InlineThrowMaxSize, 200, \ | |
3067 "Force inlining of throwing methods smaller than this") \ | |
3068 \ | |
3069 product(intx, AliasLevel, 3, \ | |
3070 "0 for no aliasing, 1 for oop/field/static/array split, " \ | |
3071 "2 for class split, 3 for unique instances") \ | |
3072 \ | |
3073 develop(bool, VerifyAliases, false, \ | |
3074 "perform extra checks on the results of alias analysis") \ | |
3075 \ | |
3076 develop(intx, ProfilerNodeSize, 1024, \ | |
3077 "Size in K to allocate for the Profile Nodes of each thread") \ | |
3078 \ | |
3079 develop(intx, V8AtomicOperationUnderLockSpinCount, 50, \ | |
3080 "Number of times to spin wait on a v8 atomic operation lock") \ | |
3081 \ | |
3082 product(intx, ReadSpinIterations, 100, \ | |
3083 "Number of read attempts before a yield (spin inner loop)") \ | |
3084 \ | |
3085 product_pd(intx, PreInflateSpin, \ | |
3086 "Number of times to spin wait before inflation") \ | |
3087 \ | |
3088 product(intx, PreBlockSpin, 10, \ | |
3089 "Number of times to spin in an inflated lock before going to " \ | |
3090 "an OS lock") \ | |
3091 \ | |
3092 /* gc parameters */ \ | |
1064 | 3093 product(uintx, InitialHeapSize, 0, \ |
3094 "Initial heap size (in bytes); zero means OldSize + NewSize") \ | |
3095 \ | |
3096 product(uintx, MaxHeapSize, ScaleForWordSize(96*M), \ | |
3097 "Maximum heap size (in bytes)") \ | |
3098 \ | |
3099 product(uintx, OldSize, ScaleForWordSize(4*M), \ | |
3100 "Initial tenured generation size (in bytes)") \ | |
3101 \ | |
1287
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1211
diff
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|
3102 product(uintx, NewSize, ScaleForWordSize(1*M), \ |
1064 | 3103 "Initial new generation size (in bytes)") \ |
0 | 3104 \ |
3105 product(uintx, MaxNewSize, max_uintx, \ | |
1064 | 3106 "Maximum new generation size (in bytes), max_uintx means set " \ |
3107 "ergonomically") \ | |
0 | 3108 \ |
3109 product(uintx, PretenureSizeThreshold, 0, \ | |
1064 | 3110 "Maximum size in bytes of objects allocated in DefNew " \ |
3111 "generation; zero means no maximum") \ | |
3112 \ | |
3113 product(uintx, TLABSize, 0, \ | |
3114 "Starting TLAB size (in bytes); zero means set ergonomically") \ | |
0 | 3115 \ |
3116 product(uintx, MinTLABSize, 2*K, \ | |
3117 "Minimum allowed TLAB size (in bytes)") \ | |
3118 \ | |
3119 product(uintx, TLABAllocationWeight, 35, \ | |
3120 "Allocation averaging weight") \ | |
3121 \ | |
3122 product(uintx, TLABWasteTargetPercent, 1, \ | |
3123 "Percentage of Eden that can be wasted") \ | |
3124 \ | |
3125 product(uintx, TLABRefillWasteFraction, 64, \ | |
3126 "Max TLAB waste at a refill (internal fragmentation)") \ | |
3127 \ | |
3128 product(uintx, TLABWasteIncrement, 4, \ | |
3129 "Increment allowed waste at slow allocation") \ | |
3130 \ | |
1064 | 3131 product(intx, SurvivorRatio, 8, \ |
0 | 3132 "Ratio of eden/survivor space size") \ |
3133 \ | |
1064 | 3134 product(intx, NewRatio, 2, \ |
0 | 3135 "Ratio of new/old generation sizes") \ |
3136 \ | |
3137 product_pd(uintx, NewSizeThreadIncrease, \ | |
3138 "Additional size added to desired new generation size per " \ | |
3139 "non-daemon thread (in bytes)") \ | |
3140 \ | |
3141 product_pd(uintx, PermSize, \ | |
1064 | 3142 "Initial size of permanent generation (in bytes)") \ |
0 | 3143 \ |
3144 product_pd(uintx, MaxPermSize, \ | |
3145 "Maximum size of permanent generation (in bytes)") \ | |
3146 \ | |
3147 product(uintx, MinHeapFreeRatio, 40, \ | |
3148 "Min percentage of heap free after GC to avoid expansion") \ | |
3149 \ | |
3150 product(uintx, MaxHeapFreeRatio, 70, \ | |
3151 "Max percentage of heap free after GC to avoid shrinking") \ | |
3152 \ | |
3153 product(intx, SoftRefLRUPolicyMSPerMB, 1000, \ | |
3154 "Number of milliseconds per MB of free space in the heap") \ | |
3155 \ | |
3156 product(uintx, MinHeapDeltaBytes, ScaleForWordSize(128*K), \ | |
3157 "Min change in heap space due to GC (in bytes)") \ | |
3158 \ | |
3159 product(uintx, MinPermHeapExpansion, ScaleForWordSize(256*K), \ | |
3160 "Min expansion of permanent heap (in bytes)") \ | |
3161 \ | |
3162 product(uintx, MaxPermHeapExpansion, ScaleForWordSize(4*M), \ | |
3163 "Max expansion of permanent heap without full GC (in bytes)") \ | |
3164 \ | |
3165 product(intx, QueuedAllocationWarningCount, 0, \ | |
3166 "Number of times an allocation that queues behind a GC " \ | |
3167 "will retry before printing a warning") \ | |
3168 \ | |
3169 diagnostic(uintx, VerifyGCStartAt, 0, \ | |
3170 "GC invoke count where +VerifyBefore/AfterGC kicks in") \ | |
3171 \ | |
3172 diagnostic(intx, VerifyGCLevel, 0, \ | |
3173 "Generation level at which to start +VerifyBefore/AfterGC") \ | |
3174 \ | |
3175 develop(uintx, ExitAfterGCNum, 0, \ | |
3176 "If non-zero, exit after this GC.") \ | |
3177 \ | |
3178 product(intx, MaxTenuringThreshold, 15, \ | |
3179 "Maximum value for tenuring threshold") \ | |
3180 \ | |
3181 product(intx, InitialTenuringThreshold, 7, \ | |
3182 "Initial value for tenuring threshold") \ | |
3183 \ | |
3184 product(intx, TargetSurvivorRatio, 50, \ | |
3185 "Desired percentage of survivor space used after scavenge") \ | |
3186 \ | |
438 | 3187 product(uintx, MarkSweepDeadRatio, 5, \ |
0 | 3188 "Percentage (0-100) of the old gen allowed as dead wood." \ |
3189 "Serial mark sweep treats this as both the min and max value." \ | |
3190 "CMS uses this value only if it falls back to mark sweep." \ | |
3191 "Par compact uses a variable scale based on the density of the" \ | |
3192 "generation and treats this as the max value when the heap is" \ | |
3193 "either completely full or completely empty. Par compact also" \ | |
3194 "has a smaller default value; see arguments.cpp.") \ | |
3195 \ | |
438 | 3196 product(uintx, PermMarkSweepDeadRatio, 20, \ |
0 | 3197 "Percentage (0-100) of the perm gen allowed as dead wood." \ |
3198 "See MarkSweepDeadRatio for collector-specific comments.") \ | |
3199 \ | |
3200 product(intx, MarkSweepAlwaysCompactCount, 4, \ | |
3201 "How often should we fully compact the heap (ignoring the dead " \ | |
3202 "space parameters)") \ | |
3203 \ | |
3204 product(intx, PrintCMSStatistics, 0, \ | |
3205 "Statistics for CMS") \ | |
3206 \ | |
3207 product(bool, PrintCMSInitiationStatistics, false, \ | |
3208 "Statistics for initiating a CMS collection") \ | |
3209 \ | |
3210 product(intx, PrintFLSStatistics, 0, \ | |
3211 "Statistics for CMS' FreeListSpace") \ | |
3212 \ | |
3213 product(intx, PrintFLSCensus, 0, \ | |
3214 "Census for CMS' FreeListSpace") \ | |
3215 \ | |
3216 develop(uintx, GCExpandToAllocateDelayMillis, 0, \ | |
3217 "Delay in ms between expansion and allocation") \ | |
3218 \ | |
3219 product(intx, DeferThrSuspendLoopCount, 4000, \ | |
3220 "(Unstable) Number of times to iterate in safepoint loop " \ | |
3221 " before blocking VM threads ") \ | |
3222 \ | |
3223 product(intx, DeferPollingPageLoopCount, -1, \ | |
3224 "(Unsafe,Unstable) Number of iterations in safepoint loop " \ | |
3225 "before changing safepoint polling page to RO ") \ | |
3226 \ | |
3227 product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \ | |
3228 \ | |
3229 product(bool, PSChunkLargeArrays, true, \ | |
3230 "true: process large arrays in chunks") \ | |
3231 \ | |
3232 product(uintx, GCDrainStackTargetSize, 64, \ | |
3233 "how many entries we'll try to leave on the stack during " \ | |
3234 "parallel GC") \ | |
3235 \ | |
3236 /* stack parameters */ \ | |
3237 product_pd(intx, StackYellowPages, \ | |
3238 "Number of yellow zone (recoverable overflows) pages") \ | |
3239 \ | |
3240 product_pd(intx, StackRedPages, \ | |
3241 "Number of red zone (unrecoverable overflows) pages") \ | |
3242 \ | |
3243 product_pd(intx, StackShadowPages, \ | |
3244 "Number of shadow zone (for overflow checking) pages" \ | |
3245 " this should exceed the depth of the VM and native call stack") \ | |
3246 \ | |
3247 product_pd(intx, ThreadStackSize, \ | |
3248 "Thread Stack Size (in Kbytes)") \ | |
3249 \ | |
3250 product_pd(intx, VMThreadStackSize, \ | |
3251 "Non-Java Thread Stack Size (in Kbytes)") \ | |
3252 \ | |
3253 product_pd(intx, CompilerThreadStackSize, \ | |
3254 "Compiler Thread Stack Size (in Kbytes)") \ | |
3255 \ | |
3256 develop_pd(uintx, JVMInvokeMethodSlack, \ | |
3257 "Stack space (bytes) required for JVM_InvokeMethod to complete") \ | |
3258 \ | |
3259 product(uintx, ThreadSafetyMargin, 50*M, \ | |
3260 "Thread safety margin is used on fixed-stack LinuxThreads (on " \ | |
3261 "Linux/x86 only) to prevent heap-stack collision. Set to 0 to " \ | |
3262 "disable this feature") \ | |
3263 \ | |
3264 /* code cache parameters */ \ | |
3265 develop(uintx, CodeCacheSegmentSize, 64, \ | |
3266 "Code cache segment size (in bytes) - smallest unit of " \ | |
3267 "allocation") \ | |
3268 \ | |
3269 develop_pd(intx, CodeEntryAlignment, \ | |
3270 "Code entry alignment for generated code (in bytes)") \ | |
3271 \ | |
1365 | 3272 product_pd(intx, OptoLoopAlignment, \ |
3273 "Align inner loops to zero relative to this modulus") \ | |
3274 \ | |
0 | 3275 product_pd(uintx, InitialCodeCacheSize, \ |
3276 "Initial code cache size (in bytes)") \ | |
3277 \ | |
3278 product_pd(uintx, ReservedCodeCacheSize, \ | |
3279 "Reserved code cache size (in bytes) - maximum code cache size") \ | |
3280 \ | |
3281 product(uintx, CodeCacheMinimumFreeSpace, 500*K, \ | |
3282 "When less than X space left, we stop compiling.") \ | |
3283 \ | |
3284 product_pd(uintx, CodeCacheExpansionSize, \ | |
3285 "Code cache expansion size (in bytes)") \ | |
3286 \ | |
3287 develop_pd(uintx, CodeCacheMinBlockLength, \ | |
3288 "Minimum number of segments in a code cache block.") \ | |
3289 \ | |
3290 notproduct(bool, ExitOnFullCodeCache, false, \ | |
3291 "Exit the VM if we fill the code cache.") \ | |
3292 \ | |
1202 | 3293 product(bool, UseCodeCacheFlushing, false, \ |
3294 "Attempt to clean the code cache before shutting off compiler") \ | |
3295 \ | |
3296 product(intx, MinCodeCacheFlushingInterval, 30, \ | |
3297 "Min number of seconds between code cache cleaning sessions") \ | |
3298 \ | |
3299 product(uintx, CodeCacheFlushingMinimumFreeSpace, 1500*K, \ | |
3300 "When less than X space left, start code cache cleaning") \ | |
3301 \ | |
0 | 3302 /* interpreter debugging */ \ |
3303 develop(intx, BinarySwitchThreshold, 5, \ | |
3304 "Minimal number of lookupswitch entries for rewriting to binary " \ | |
3305 "switch") \ | |
3306 \ | |
3307 develop(intx, StopInterpreterAt, 0, \ | |
3308 "Stops interpreter execution at specified bytecode number") \ | |
3309 \ | |
3310 develop(intx, TraceBytecodesAt, 0, \ | |
3311 "Traces bytecodes starting with specified bytecode number") \ | |
3312 \ | |
3313 /* compiler interface */ \ | |
3314 develop(intx, CIStart, 0, \ | |
3315 "the id of the first compilation to permit") \ | |
3316 \ | |
3317 develop(intx, CIStop, -1, \ | |
3318 "the id of the last compilation to permit") \ | |
3319 \ | |
3320 develop(intx, CIStartOSR, 0, \ | |
3321 "the id of the first osr compilation to permit " \ | |
3322 "(CICountOSR must be on)") \ | |
3323 \ | |
3324 develop(intx, CIStopOSR, -1, \ | |
3325 "the id of the last osr compilation to permit " \ | |
3326 "(CICountOSR must be on)") \ | |
3327 \ | |
3328 develop(intx, CIBreakAtOSR, -1, \ | |
3329 "id of osr compilation to break at") \ | |
3330 \ | |
3331 develop(intx, CIBreakAt, -1, \ | |
3332 "id of compilation to break at") \ | |
3333 \ | |
3334 product(ccstrlist, CompileOnly, "", \ | |
3335 "List of methods (pkg/class.name) to restrict compilation to") \ | |
3336 \ | |
3337 product(ccstr, CompileCommandFile, NULL, \ | |
3338 "Read compiler commands from this file [.hotspot_compiler]") \ | |
3339 \ | |
3340 product(ccstrlist, CompileCommand, "", \ | |
3341 "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \ | |
3342 \ | |
3343 product(bool, CICompilerCountPerCPU, false, \ | |
3344 "1 compiler thread for log(N CPUs)") \ | |
3345 \ | |
3346 develop(intx, CIFireOOMAt, -1, \ | |
3347 "Fire OutOfMemoryErrors throughout CI for testing the compiler " \ | |
3348 "(non-negative value throws OOM after this many CI accesses " \ | |
3349 "in each compile)") \ | |
3350 \ | |
3351 develop(intx, CIFireOOMAtDelay, -1, \ | |
3352 "Wait for this many CI accesses to occur in all compiles before " \ | |
3353 "beginning to throw OutOfMemoryErrors in each compile") \ | |
3354 \ | |
909
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6866585: debug code in ciObjectFactory too slow for large objects
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905
diff
changeset
|
3355 notproduct(bool, CIObjectFactoryVerify, false, \ |
b32a809aab08
6866585: debug code in ciObjectFactory too slow for large objects
jcoomes
parents:
905
diff
changeset
|
3356 "enable potentially expensive verification in ciObjectFactory") \ |
b32a809aab08
6866585: debug code in ciObjectFactory too slow for large objects
jcoomes
parents:
905
diff
changeset
|
3357 \ |
0 | 3358 /* Priorities */ \ |
3359 product_pd(bool, UseThreadPriorities, "Use native thread priorities") \ | |
3360 \ | |
3361 product(intx, ThreadPriorityPolicy, 0, \ | |
3362 "0 : Normal. "\ | |
3363 " VM chooses priorities that are appropriate for normal "\ | |
3364 " applications. On Solaris NORM_PRIORITY and above are mapped "\ | |
3365 " to normal native priority. Java priorities below NORM_PRIORITY"\ | |
3366 " map to lower native priority values. On Windows applications"\ | |
3367 " are allowed to use higher native priorities. However, with "\ | |
3368 " ThreadPriorityPolicy=0, VM will not use the highest possible"\ | |
3369 " native priority, THREAD_PRIORITY_TIME_CRITICAL, as it may "\ | |
3370 " interfere with system threads. On Linux thread priorities "\ | |
3371 " are ignored because the OS does not support static priority "\ | |
3372 " in SCHED_OTHER scheduling class which is the only choice for"\ | |
3373 " non-root, non-realtime applications. "\ | |
3374 "1 : Aggressive. "\ | |
3375 " Java thread priorities map over to the entire range of "\ | |
3376 " native thread priorities. Higher Java thread priorities map "\ | |
3377 " to higher native thread priorities. This policy should be "\ | |
3378 " used with care, as sometimes it can cause performance "\ | |
3379 " degradation in the application and/or the entire system. On "\ | |
3380 " Linux this policy requires root privilege.") \ | |
3381 \ | |
3382 product(bool, ThreadPriorityVerbose, false, \ | |
3383 "print priority changes") \ | |
3384 \ | |
3385 product(intx, DefaultThreadPriority, -1, \ | |
3386 "what native priority threads run at if not specified elsewhere (-1 means no change)") \ | |
3387 \ | |
3388 product(intx, CompilerThreadPriority, -1, \ | |
3389 "what priority should compiler threads run at (-1 means no change)") \ | |
3390 \ | |
3391 product(intx, VMThreadPriority, -1, \ | |
3392 "what priority should VM threads run at (-1 means no change)") \ | |
3393 \ | |
3394 product(bool, CompilerThreadHintNoPreempt, true, \ | |
3395 "(Solaris only) Give compiler threads an extra quanta") \ | |
3396 \ | |
3397 product(bool, VMThreadHintNoPreempt, false, \ | |
3398 "(Solaris only) Give VM thread an extra quanta") \ | |
3399 \ | |
3400 product(intx, JavaPriority1_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3401 product(intx, JavaPriority2_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3402 product(intx, JavaPriority3_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3403 product(intx, JavaPriority4_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3404 product(intx, JavaPriority5_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3405 product(intx, JavaPriority6_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3406 product(intx, JavaPriority7_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3407 product(intx, JavaPriority8_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3408 product(intx, JavaPriority9_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3409 product(intx, JavaPriority10_To_OSPriority,-1, "Map Java priorities to OS priorities") \ | |
3410 \ | |
3411 /* compiler debugging */ \ | |
3412 notproduct(intx, CompileTheWorldStartAt, 1, \ | |
3413 "First class to consider when using +CompileTheWorld") \ | |
3414 \ | |
3415 notproduct(intx, CompileTheWorldStopAt, max_jint, \ | |
3416 "Last class to consider when using +CompileTheWorld") \ | |
3417 \ | |
3418 develop(intx, NewCodeParameter, 0, \ | |
3419 "Testing Only: Create a dedicated integer parameter before " \ | |
3420 "putback") \ | |
3421 \ | |
3422 /* new oopmap storage allocation */ \ | |
3423 develop(intx, MinOopMapAllocation, 8, \ | |
3424 "Minimum number of OopMap entries in an OopMapSet") \ | |
3425 \ | |
3426 /* Background Compilation */ \ | |
3427 develop(intx, LongCompileThreshold, 50, \ | |
3428 "Used with +TraceLongCompiles") \ | |
3429 \ | |
3430 product(intx, StarvationMonitorInterval, 200, \ | |
3431 "Pause between each check in ms") \ | |
3432 \ | |
3433 /* recompilation */ \ | |
3434 product_pd(intx, CompileThreshold, \ | |
3435 "number of interpreted method invocations before (re-)compiling") \ | |
3436 \ | |
3437 product_pd(intx, BackEdgeThreshold, \ | |
3438 "Interpreter Back edge threshold at which an OSR compilation is invoked")\ | |
3439 \ | |
1783 | 3440 product(intx, Tier0InvokeNotifyFreqLog, 7, \ |
3441 "Interpreter (tier 0) invocation notification frequency.") \ | |
3442 \ | |
3443 product(intx, Tier2InvokeNotifyFreqLog, 11, \ | |
3444 "C1 without MDO (tier 2) invocation notification frequency.") \ | |
3445 \ | |
3446 product(intx, Tier3InvokeNotifyFreqLog, 10, \ | |
3447 "C1 with MDO profiling (tier 3) invocation notification " \ | |
3448 "frequency.") \ | |
3449 \ | |
3450 product(intx, Tier0BackedgeNotifyFreqLog, 10, \ | |
3451 "Interpreter (tier 0) invocation notification frequency.") \ | |
3452 \ | |
3453 product(intx, Tier2BackedgeNotifyFreqLog, 14, \ | |
3454 "C1 without MDO (tier 2) invocation notification frequency.") \ | |
3455 \ | |
3456 product(intx, Tier3BackedgeNotifyFreqLog, 13, \ | |
3457 "C1 with MDO profiling (tier 3) invocation notification " \ | |
3458 "frequency.") \ | |
3459 \ | |
3460 product(intx, Tier2CompileThreshold, 0, \ | |
3461 "threshold at which tier 2 compilation is invoked") \ | |
3462 \ | |
3463 product(intx, Tier2BackEdgeThreshold, 0, \ | |
3464 "Back edge threshold at which tier 2 compilation is invoked") \ | |
3465 \ | |
3466 product(intx, Tier3InvocationThreshold, 200, \ | |
3467 "Compile if number of method invocations crosses this " \ | |
3468 "threshold") \ | |
3469 \ | |
3470 product(intx, Tier3MinInvocationThreshold, 100, \ | |
3471 "Minimum invocation to compile at tier 3") \ | |
3472 \ | |
3473 product(intx, Tier3CompileThreshold, 2000, \ | |
3474 "Threshold at which tier 3 compilation is invoked (invocation " \ | |
3475 "minimum must be satisfied.") \ | |
3476 \ | |
3477 product(intx, Tier3BackEdgeThreshold, 7000, \ | |
3478 "Back edge threshold at which tier 3 OSR compilation is invoked") \ | |
3479 \ | |
3480 product(intx, Tier4InvocationThreshold, 5000, \ | |
3481 "Compile if number of method invocations crosses this " \ | |
3482 "threshold") \ | |
3483 \ | |
3484 product(intx, Tier4MinInvocationThreshold, 600, \ | |
3485 "Minimum invocation to compile at tier 4") \ | |
3486 \ | |
3487 product(intx, Tier4CompileThreshold, 15000, \ | |
3488 "Threshold at which tier 4 compilation is invoked (invocation " \ | |
3489 "minimum must be satisfied.") \ | |
3490 \ | |
3491 product(intx, Tier4BackEdgeThreshold, 40000, \ | |
3492 "Back edge threshold at which tier 4 OSR compilation is invoked") \ | |
3493 \ | |
3494 product(intx, Tier3DelayOn, 5, \ | |
3495 "If C2 queue size grows over this amount per compiler thread " \ | |
3496 "stop compiling at tier 3 and start compiling at tier 2") \ | |
3497 \ | |
3498 product(intx, Tier3DelayOff, 2, \ | |
3499 "If C2 queue size is less than this amount per compiler thread " \ | |
3500 "allow methods compiled at tier 2 transition to tier 3") \ | |
3501 \ | |
3502 product(intx, Tier3LoadFeedback, 5, \ | |
3503 "Tier 3 thresholds will increase twofold when C1 queue size " \ | |
3504 "reaches this amount per compiler thread") \ | |
3505 \ | |
3506 product(intx, Tier4LoadFeedback, 3, \ | |
3507 "Tier 4 thresholds will increase twofold when C2 queue size " \ | |
3508 "reaches this amount per compiler thread") \ | |
3509 \ | |
3510 product(intx, TieredCompileTaskTimeout, 50, \ | |
3511 "Kill compile task if method was not used within " \ | |
3512 "given timeout in milliseconds") \ | |
3513 \ | |
3514 product(intx, TieredStopAtLevel, 4, \ | |
3515 "Stop at given compilation level") \ | |
3516 \ | |
3517 product(intx, Tier0ProfilingStartPercentage, 200, \ | |
3518 "Start profiling in interpreter if the counters exceed tier 3" \ | |
3519 "thresholds by the specified percentage") \ | |
3520 \ | |
3521 product(intx, TieredRateUpdateMinTime, 1, \ | |
3522 "Minimum rate sampling interval (in milliseconds)") \ | |
3523 \ | |
3524 product(intx, TieredRateUpdateMaxTime, 25, \ | |
3525 "Maximum rate sampling interval (in milliseconds)") \ | |
0 | 3526 \ |
3527 product_pd(bool, TieredCompilation, \ | |
1783 | 3528 "Enable tiered compilation") \ |
3529 \ | |
3530 product(bool, PrintTieredEvents, false, \ | |
3531 "Print tiered events notifications") \ | |
0 | 3532 \ |
3533 product(bool, StressTieredRuntime, false, \ | |
3534 "Alternate client and server compiler on compile requests") \ | |
3535 \ | |
3536 product_pd(intx, OnStackReplacePercentage, \ | |
3537 "NON_TIERED number of method invocations/branches (expressed as %"\ | |
3538 "of CompileThreshold) before (re-)compiling OSR code") \ | |
3539 \ | |
3540 product(intx, InterpreterProfilePercentage, 33, \ | |
3541 "NON_TIERED number of method invocations/branches (expressed as %"\ | |
3542 "of CompileThreshold) before profiling in the interpreter") \ | |
3543 \ | |
3544 develop(intx, MaxRecompilationSearchLength, 10, \ | |
3545 "max. # frames to inspect searching for recompilee") \ | |
3546 \ | |
3547 develop(intx, MaxInterpretedSearchLength, 3, \ | |
3548 "max. # interp. frames to skip when searching for recompilee") \ | |
3549 \ | |
3550 develop(intx, DesiredMethodLimit, 8000, \ | |
3551 "desired max. method size (in bytecodes) after inlining") \ | |
3552 \ | |
3553 develop(intx, HugeMethodLimit, 8000, \ | |
3554 "don't compile methods larger than this if " \ | |
3555 "+DontCompileHugeMethods") \ | |
3556 \ | |
3557 /* New JDK 1.4 reflection implementation */ \ | |
3558 \ | |
3559 develop(bool, UseNewReflection, true, \ | |
3560 "Temporary flag for transition to reflection based on dynamic " \ | |
3561 "bytecode generation in 1.4; can no longer be turned off in 1.4 " \ | |
3562 "JDK, and is unneeded in 1.3 JDK, but marks most places VM " \ | |
3563 "changes were needed") \ | |
3564 \ | |
3565 develop(bool, VerifyReflectionBytecodes, false, \ | |
3566 "Force verification of 1.4 reflection bytecodes. Does not work " \ | |
3567 "in situations like that described in 4486457 or for " \ | |
3568 "constructors generated for serialization, so can not be enabled "\ | |
3569 "in product.") \ | |
3570 \ | |
3571 product(bool, ReflectionWrapResolutionErrors, true, \ | |
3572 "Temporary flag for transition to AbstractMethodError wrapped " \ | |
3573 "in InvocationTargetException. See 6531596") \ | |
3574 \ | |
3575 \ | |
3576 develop(intx, FastSuperclassLimit, 8, \ | |
3577 "Depth of hardwired instanceof accelerator array") \ | |
3578 \ | |
3579 /* Properties for Java libraries */ \ | |
3580 \ | |
3581 product(intx, MaxDirectMemorySize, -1, \ | |
3582 "Maximum total size of NIO direct-buffer allocations") \ | |
3583 \ | |
3584 /* temporary developer defined flags */ \ | |
3585 \ | |
3586 diagnostic(bool, UseNewCode, false, \ | |
3587 "Testing Only: Use the new version while testing") \ | |
3588 \ | |
3589 diagnostic(bool, UseNewCode2, false, \ | |
3590 "Testing Only: Use the new version while testing") \ | |
3591 \ | |
3592 diagnostic(bool, UseNewCode3, false, \ | |
3593 "Testing Only: Use the new version while testing") \ | |
3594 \ | |
3595 /* flags for performance data collection */ \ | |
3596 \ | |
2192
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
3597 NOT_EMBEDDED(product(bool, UsePerfData, true, \ |
0 | 3598 "Flag to disable jvmstat instrumentation for performance testing" \ |
2192
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
3599 "and problem isolation purposes.")) \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
3600 \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
3601 EMBEDDED_ONLY(product(bool, UsePerfData, false, \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
3602 "Flag to disable jvmstat instrumentation for performance testing" \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
3603 "and problem isolation purposes.")) \ |
0 | 3604 \ |
3605 product(bool, PerfDataSaveToFile, false, \ | |
3606 "Save PerfData memory to hsperfdata_<pid> file on exit") \ | |
3607 \ | |
3608 product(ccstr, PerfDataSaveFile, NULL, \ | |
3609 "Save PerfData memory to the specified absolute pathname," \ | |
3610 "%p in the file name if present will be replaced by pid") \ | |
3611 \ | |
3612 product(intx, PerfDataSamplingInterval, 50 /*ms*/, \ | |
3613 "Data sampling interval in milliseconds") \ | |
3614 \ | |
3615 develop(bool, PerfTraceDataCreation, false, \ | |
3616 "Trace creation of Performance Data Entries") \ | |
3617 \ | |
3618 develop(bool, PerfTraceMemOps, false, \ | |
3619 "Trace PerfMemory create/attach/detach calls") \ | |
3620 \ | |
3621 product(bool, PerfDisableSharedMem, false, \ | |
3622 "Store performance data in standard memory") \ | |
3623 \ | |
3624 product(intx, PerfDataMemorySize, 32*K, \ | |
3625 "Size of performance data memory region. Will be rounded " \ | |
3626 "up to a multiple of the native os page size.") \ | |
3627 \ | |
3628 product(intx, PerfMaxStringConstLength, 1024, \ | |
3629 "Maximum PerfStringConstant string length before truncation") \ | |
3630 \ | |
3631 product(bool, PerfAllowAtExitRegistration, false, \ | |
3632 "Allow registration of atexit() methods") \ | |
3633 \ | |
3634 product(bool, PerfBypassFileSystemCheck, false, \ | |
3635 "Bypass Win32 file system criteria checks (Windows Only)") \ | |
3636 \ | |
3637 product(intx, UnguardOnExecutionViolation, 0, \ | |
3638 "Unguard page and retry on no-execute fault (Win32 only)" \ | |
3639 "0=off, 1=conservative, 2=aggressive") \ | |
3640 \ | |
3641 /* Serviceability Support */ \ | |
3642 \ | |
3643 product(bool, ManagementServer, false, \ | |
3644 "Create JMX Management Server") \ | |
3645 \ | |
3646 product(bool, DisableAttachMechanism, false, \ | |
3647 "Disable mechanism that allows tools to attach to this VM") \ | |
3648 \ | |
3649 product(bool, StartAttachListener, false, \ | |
3650 "Always start Attach Listener at VM startup") \ | |
3651 \ | |
3652 manageable(bool, PrintConcurrentLocks, false, \ | |
3653 "Print java.util.concurrent locks in thread dump") \ | |
3654 \ | |
2209
e9aa2ca89ad6
7019718: make error reporting flags product instead of diagnostic
kamg
parents:
2204
diff
changeset
|
3655 product(bool, TransmitErrorReport, false, \ |
2199
d8a72fbc4be7
7003401: Implement VM error-reporting functionality on erroneous termination
kamg
parents:
2192
diff
changeset
|
3656 "Enable error report transmission on erroneous termination") \ |
d8a72fbc4be7
7003401: Implement VM error-reporting functionality on erroneous termination
kamg
parents:
2192
diff
changeset
|
3657 \ |
2209
e9aa2ca89ad6
7019718: make error reporting flags product instead of diagnostic
kamg
parents:
2204
diff
changeset
|
3658 product(ccstr, ErrorReportServer, NULL, \ |
2199
d8a72fbc4be7
7003401: Implement VM error-reporting functionality on erroneous termination
kamg
parents:
2192
diff
changeset
|
3659 "Override built-in error report server address") \ |
d8a72fbc4be7
7003401: Implement VM error-reporting functionality on erroneous termination
kamg
parents:
2192
diff
changeset
|
3660 \ |
0 | 3661 /* Shared spaces */ \ |
3662 \ | |
3663 product(bool, UseSharedSpaces, true, \ | |
3664 "Use shared spaces in the permanent generation") \ | |
3665 \ | |
3666 product(bool, RequireSharedSpaces, false, \ | |
3667 "Require shared spaces in the permanent generation") \ | |
3668 \ | |
3669 product(bool, DumpSharedSpaces, false, \ | |
3670 "Special mode: JVM reads a class list, loads classes, builds " \ | |
3671 "shared spaces, and dumps the shared spaces to a file to be " \ | |
3672 "used in future JVM runs.") \ | |
3673 \ | |
3674 product(bool, PrintSharedSpaces, false, \ | |
3675 "Print usage of shared spaces") \ | |
3676 \ | |
3677 product(uintx, SharedDummyBlockSize, 512*M, \ | |
3678 "Size of dummy block used to shift heap addresses (in bytes)") \ | |
3679 \ | |
1875 | 3680 product(uintx, SharedReadWriteSize, NOT_LP64(12*M) LP64_ONLY(13*M), \ |
0 | 3681 "Size of read-write space in permanent generation (in bytes)") \ |
3682 \ | |
910
10d8c0d0d60e
6867645: java -Xshare:dump failed - read only space too small
jcoomes
parents:
909
diff
changeset
|
3683 product(uintx, SharedReadOnlySize, 10*M, \ |
0 | 3684 "Size of read-only space in permanent generation (in bytes)") \ |
3685 \ | |
2242
6e70f1bb7f6f
7019557: SharedMiscDataSize too small for 64-bit fastdebug JVM
coleenp
parents:
2204
diff
changeset
|
3686 product(uintx, SharedMiscDataSize, NOT_LP64(4*M) LP64_ONLY(5*M), \ |
0 | 3687 "Size of the shared data area adjacent to the heap (in bytes)") \ |
3688 \ | |
3689 product(uintx, SharedMiscCodeSize, 4*M, \ | |
3690 "Size of the shared code area adjacent to the heap (in bytes)") \ | |
3691 \ | |
3692 diagnostic(bool, SharedOptimizeColdStart, true, \ | |
3693 "At dump time, order shared objects to achieve better " \ | |
3694 "cold startup time.") \ | |
3695 \ | |
3696 develop(intx, SharedOptimizeColdStartPolicy, 2, \ | |
3697 "Reordering policy for SharedOptimizeColdStart " \ | |
3698 "0=favor classload-time locality, 1=balanced, " \ | |
3699 "2=favor runtime locality") \ | |
3700 \ | |
3701 diagnostic(bool, SharedSkipVerify, false, \ | |
3702 "Skip assert() and verify() which page-in unwanted shared " \ | |
3703 "objects. ") \ | |
3704 \ | |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3705 diagnostic(bool, EnableInvokeDynamic, true, \ |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3706 "support JSR 292 (method handles, invokedynamic, " \ |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3707 "anonymous classes") \ |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3708 \ |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
406
diff
changeset
|
3709 product(bool, AnonymousClasses, false, \ |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3710 "support sun.misc.Unsafe.defineAnonymousClass (deprecated)") \ |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
406
diff
changeset
|
3711 \ |
905
bd2b1f617a4e
6868487: EnableInvokeDynamic and EnableMethodHandles should not be visible flags in JDK6 or JDK7
jrose
parents:
885
diff
changeset
|
3712 experimental(bool, EnableMethodHandles, false, \ |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3713 "support method handles (deprecated)") \ |
710 | 3714 \ |
3715 diagnostic(intx, MethodHandlePushLimit, 3, \ | |
3716 "number of additional stack slots a method handle may push") \ | |
3717 \ | |
3718 develop(bool, TraceMethodHandles, false, \ | |
3719 "trace internal method handle operations") \ | |
3720 \ | |
3721 diagnostic(bool, VerifyMethodHandles, trueInDebug, \ | |
3722 "perform extra checks when constructing method handles") \ | |
3723 \ | |
3724 diagnostic(bool, OptimizeMethodHandles, true, \ | |
3725 "when constructing method handles, try to improve them") \ | |
3726 \ | |
3388
a80577f854f9
7045513: JSR 292 inlining causes crashes in methodHandleWalk.cpp
never
parents:
3384
diff
changeset
|
3727 develop(bool, StressMethodHandleWalk, false, \ |
a80577f854f9
7045513: JSR 292 inlining causes crashes in methodHandleWalk.cpp
never
parents:
3384
diff
changeset
|
3728 "Process all method handles with MethodHandleWalk") \ |
a80577f854f9
7045513: JSR 292 inlining causes crashes in methodHandleWalk.cpp
never
parents:
3384
diff
changeset
|
3729 \ |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3284
diff
changeset
|
3730 diagnostic(bool, UseRicochetFrames, true, \ |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3284
diff
changeset
|
3731 "use ricochet stack frames for method handle combination, " \ |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3284
diff
changeset
|
3732 "if the platform supports them") \ |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3284
diff
changeset
|
3733 \ |
1173
73b22f919c34
6912065: final fields in objects need to support inlining optimizations for JSR 292
jrose
parents:
1157
diff
changeset
|
3734 experimental(bool, TrustFinalNonStaticFields, false, \ |
73b22f919c34
6912065: final fields in objects need to support inlining optimizations for JSR 292
jrose
parents:
1157
diff
changeset
|
3735 "trust final non-static declarations for constant folding") \ |
73b22f919c34
6912065: final fields in objects need to support inlining optimizations for JSR 292
jrose
parents:
1157
diff
changeset
|
3736 \ |
3745
a93146d0e4be
7049410: JSR 292 old method name MethodHandle.invokeGeneric should not be accepted by the JVM
jrose
parents:
3388
diff
changeset
|
3737 experimental(bool, AllowInvokeGeneric, false, \ |
2356
72dee110246f
6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
2325
diff
changeset
|
3738 "accept MethodHandle.invoke and MethodHandle.invokeGeneric " \ |
72dee110246f
6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
2325
diff
changeset
|
3739 "as equivalent methods") \ |
72dee110246f
6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
2325
diff
changeset
|
3740 \ |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3741 develop(bool, TraceInvokeDynamic, false, \ |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3742 "trace internal invoke dynamic operations") \ |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3743 \ |
0 | 3744 diagnostic(bool, PauseAtStartup, false, \ |
3745 "Causes the VM to pause at startup time and wait for the pause " \ | |
3746 "file to be removed (default: ./vm.paused.<pid>)") \ | |
3747 \ | |
3748 diagnostic(ccstr, PauseAtStartupFile, NULL, \ | |
3749 "The file to create and for whose removal to await when pausing " \ | |
3750 "at startup. (default: ./vm.paused.<pid>)") \ | |
3751 \ | |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2265
diff
changeset
|
3752 diagnostic(bool, PauseAtExit, false, \ |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2265
diff
changeset
|
3753 "Pause and wait for keypress on exit if a debugger is attached") \ |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2265
diff
changeset
|
3754 \ |
0 | 3755 product(bool, ExtendedDTraceProbes, false, \ |
3756 "Enable performance-impacting dtrace probes") \ | |
3757 \ | |
3758 product(bool, DTraceMethodProbes, false, \ | |
3759 "Enable dtrace probes for method-entry and method-exit") \ | |
3760 \ | |
3761 product(bool, DTraceAllocProbes, false, \ | |
3762 "Enable dtrace probes for object allocation") \ | |
3763 \ | |
3764 product(bool, DTraceMonitorProbes, false, \ | |
3765 "Enable dtrace probes for monitor events") \ | |
3766 \ | |
3767 product(bool, RelaxAccessControlCheck, false, \ | |
3768 "Relax the access control checks in the verifier") \ | |
3769 \ | |
116
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
113
diff
changeset
|
3770 diagnostic(bool, PrintDTraceDOF, false, \ |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
113
diff
changeset
|
3771 "Print the DTrace DOF passed to the system for JSDT probes") \ |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
113
diff
changeset
|
3772 \ |
2378 | 3773 product(uintx, StringTableSize, 1009, \ |
3774 "Number of buckets in the interned String table") \ | |
3775 \ | |
449
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
443
diff
changeset
|
3776 product(bool, UseVMInterruptibleIO, false, \ |
0 | 3777 "(Unstable, Solaris-specific) Thread interrupt before or with " \ |
449
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
443
diff
changeset
|
3778 "EINTR for I/O operations results in OS_INTRPT. The default value"\ |
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
443
diff
changeset
|
3779 " of this flag is true for JDK 6 and earliers") |
0 | 3780 |
3781 /* | |
3782 * Macros for factoring of globals | |
3783 */ | |
3784 | |
3785 // Interface macros | |
3786 #define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; | |
3787 #define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name; | |
3788 #define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name; | |
350
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
3789 #define DECLARE_EXPERIMENTAL_FLAG(type, name, value, doc) extern "C" type name; |
0 | 3790 #define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name; |
3791 #define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name; | |
3792 #ifdef PRODUCT | |
3793 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) const type name = value; | |
3794 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) const type name = pd_##name; | |
3795 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) | |
3796 #else | |
3797 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name; | |
3798 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name; | |
3799 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name; | |
3800 #endif | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
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3801 // Special LP64 flags, product only needed for now. |
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3802 #ifdef _LP64 |
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3803 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; |
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3804 #else |
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3805 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) const type name = value; |
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3806 #endif // _LP64 |
0 | 3807 |
3808 // Implementation macros | |
3809 #define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value; | |
3810 #define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name; | |
3811 #define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value; | |
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3812 #define MATERIALIZE_EXPERIMENTAL_FLAG(type, name, value, doc) type name = value; |
0 | 3813 #define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value; |
3814 #define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value; | |
3815 #ifdef PRODUCT | |
3816 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) /* flag name is constant */ | |
3817 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) /* flag name is constant */ | |
3818 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) | |
3819 #else | |
3820 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value; | |
3821 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name; | |
3822 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value; | |
3823 #endif | |
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3824 #ifdef _LP64 |
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3825 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) type name = value; |
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3826 #else |
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3827 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) /* flag is constant */ |
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3828 #endif // _LP64 |
0 | 3829 |
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3830 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) |
0 | 3831 |
3832 RUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG) | |
1972 | 3833 |
3834 #endif // SHARE_VM_RUNTIME_GLOBALS_HPP |