Mercurial > hg > graal-jvmci-8
annotate src/share/vm/runtime/globals.hpp @ 4872:aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
Reviewed-by: kvn, jrose, kevinw, brutisso, twisti, jmasa
author | never |
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date | Wed, 01 Feb 2012 07:59:01 -0800 |
parents | 5f17b16b3219 |
children | 0382d2b469b2 |
rev | line source |
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0 | 1 /* |
4868 | 2 * Copyright (c) 1997, 2012, 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" | |
4868 | 29 |
30 // use this for flags that are true per default in the tiered build | |
31 // but false in non-tiered builds, and vice versa | |
32 #ifdef TIERED | |
33 #define trueInTiered true | |
34 #define falseInTiered false | |
35 #else | |
36 #define trueInTiered false | |
37 #define falseInTiered true | |
38 #endif | |
39 | |
1972 | 40 #ifdef TARGET_ARCH_x86 |
41 # include "globals_x86.hpp" | |
42 #endif | |
43 #ifdef TARGET_ARCH_sparc | |
44 # include "globals_sparc.hpp" | |
45 #endif | |
46 #ifdef TARGET_ARCH_zero | |
47 # include "globals_zero.hpp" | |
48 #endif | |
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49 #ifdef TARGET_ARCH_arm |
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50 # include "globals_arm.hpp" |
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51 #endif |
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52 #ifdef TARGET_ARCH_ppc |
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53 # include "globals_ppc.hpp" |
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54 #endif |
1972 | 55 #ifdef TARGET_OS_FAMILY_linux |
56 # include "globals_linux.hpp" | |
57 #endif | |
58 #ifdef TARGET_OS_FAMILY_solaris | |
59 # include "globals_solaris.hpp" | |
60 #endif | |
61 #ifdef TARGET_OS_FAMILY_windows | |
62 # include "globals_windows.hpp" | |
63 #endif | |
3960 | 64 #ifdef TARGET_OS_FAMILY_bsd |
65 # include "globals_bsd.hpp" | |
66 #endif | |
1972 | 67 #ifdef TARGET_OS_ARCH_linux_x86 |
68 # include "globals_linux_x86.hpp" | |
69 #endif | |
70 #ifdef TARGET_OS_ARCH_linux_sparc | |
71 # include "globals_linux_sparc.hpp" | |
72 #endif | |
73 #ifdef TARGET_OS_ARCH_linux_zero | |
74 # include "globals_linux_zero.hpp" | |
75 #endif | |
76 #ifdef TARGET_OS_ARCH_solaris_x86 | |
77 # include "globals_solaris_x86.hpp" | |
78 #endif | |
79 #ifdef TARGET_OS_ARCH_solaris_sparc | |
80 # include "globals_solaris_sparc.hpp" | |
81 #endif | |
82 #ifdef TARGET_OS_ARCH_windows_x86 | |
83 # include "globals_windows_x86.hpp" | |
84 #endif | |
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85 #ifdef TARGET_OS_ARCH_linux_arm |
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86 # include "globals_linux_arm.hpp" |
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87 #endif |
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88 #ifdef TARGET_OS_ARCH_linux_ppc |
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89 # include "globals_linux_ppc.hpp" |
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90 #endif |
3960 | 91 #ifdef TARGET_OS_ARCH_bsd_x86 |
92 # include "globals_bsd_x86.hpp" | |
93 #endif | |
94 #ifdef TARGET_OS_ARCH_bsd_zero | |
95 # include "globals_bsd_zero.hpp" | |
96 #endif | |
1972 | 97 #ifdef COMPILER1 |
98 #ifdef TARGET_ARCH_x86 | |
99 # include "c1_globals_x86.hpp" | |
100 #endif | |
101 #ifdef TARGET_ARCH_sparc | |
102 # include "c1_globals_sparc.hpp" | |
103 #endif | |
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104 #ifdef TARGET_ARCH_arm |
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105 # include "c1_globals_arm.hpp" |
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106 #endif |
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107 #ifdef TARGET_ARCH_ppc |
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108 # include "c1_globals_ppc.hpp" |
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109 #endif |
1972 | 110 #ifdef TARGET_OS_FAMILY_linux |
111 # include "c1_globals_linux.hpp" | |
112 #endif | |
113 #ifdef TARGET_OS_FAMILY_solaris | |
114 # include "c1_globals_solaris.hpp" | |
115 #endif | |
116 #ifdef TARGET_OS_FAMILY_windows | |
117 # include "c1_globals_windows.hpp" | |
118 #endif | |
3960 | 119 #ifdef TARGET_OS_FAMILY_bsd |
120 # include "c1_globals_bsd.hpp" | |
121 #endif | |
1972 | 122 #endif |
123 #ifdef COMPILER2 | |
124 #ifdef TARGET_ARCH_x86 | |
125 # include "c2_globals_x86.hpp" | |
126 #endif | |
127 #ifdef TARGET_ARCH_sparc | |
128 # include "c2_globals_sparc.hpp" | |
129 #endif | |
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130 #ifdef TARGET_ARCH_arm |
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131 # include "c2_globals_arm.hpp" |
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132 #endif |
1972 | 133 #ifdef TARGET_OS_FAMILY_linux |
134 # include "c2_globals_linux.hpp" | |
135 #endif | |
136 #ifdef TARGET_OS_FAMILY_solaris | |
137 # include "c2_globals_solaris.hpp" | |
138 #endif | |
139 #ifdef TARGET_OS_FAMILY_windows | |
140 # include "c2_globals_windows.hpp" | |
141 #endif | |
3960 | 142 #ifdef TARGET_OS_FAMILY_bsd |
143 # include "c2_globals_bsd.hpp" | |
144 #endif | |
1972 | 145 #endif |
146 #ifdef SHARK | |
147 #ifdef TARGET_ARCH_zero | |
148 # include "shark_globals_zero.hpp" | |
149 #endif | |
150 #endif | |
151 | |
1692 | 152 #if !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK) |
0 | 153 define_pd_global(bool, BackgroundCompilation, false); |
154 define_pd_global(bool, UseTLAB, false); | |
155 define_pd_global(bool, CICompileOSR, false); | |
156 define_pd_global(bool, UseTypeProfile, false); | |
157 define_pd_global(bool, UseOnStackReplacement, false); | |
158 define_pd_global(bool, InlineIntrinsics, false); | |
159 define_pd_global(bool, PreferInterpreterNativeStubs, true); | |
160 define_pd_global(bool, ProfileInterpreter, false); | |
161 define_pd_global(bool, ProfileTraps, false); | |
162 define_pd_global(bool, TieredCompilation, false); | |
163 | |
164 define_pd_global(intx, CompileThreshold, 0); | |
165 define_pd_global(intx, BackEdgeThreshold, 0); | |
166 | |
167 define_pd_global(intx, OnStackReplacePercentage, 0); | |
168 define_pd_global(bool, ResizeTLAB, false); | |
169 define_pd_global(intx, FreqInlineSize, 0); | |
1064 | 170 define_pd_global(intx, InlineSmallCode, 0); |
0 | 171 define_pd_global(intx, NewSizeThreadIncrease, 4*K); |
172 define_pd_global(intx, InlineClassNatives, true); | |
173 define_pd_global(intx, InlineUnsafeOps, true); | |
174 define_pd_global(intx, InitialCodeCacheSize, 160*K); | |
175 define_pd_global(intx, ReservedCodeCacheSize, 32*M); | |
176 define_pd_global(intx, CodeCacheExpansionSize, 32*K); | |
177 define_pd_global(intx, CodeCacheMinBlockLength, 1); | |
178 define_pd_global(uintx,PermSize, ScaleForWordSize(4*M)); | |
179 define_pd_global(uintx,MaxPermSize, ScaleForWordSize(64*M)); | |
180 define_pd_global(bool, NeverActAsServerClassMachine, true); | |
1064 | 181 define_pd_global(uint64_t,MaxRAM, 1ULL*G); |
0 | 182 #define CI_COMPILER_COUNT 0 |
183 #else | |
184 | |
185 #ifdef COMPILER2 | |
186 #define CI_COMPILER_COUNT 2 | |
187 #else | |
188 #define CI_COMPILER_COUNT 1 | |
189 #endif // COMPILER2 | |
190 | |
191 #endif // no compilers | |
192 | |
193 | |
194 // string type aliases used only in this file | |
195 typedef const char* ccstr; | |
196 typedef const char* ccstrlist; // represents string arguments which accumulate | |
197 | |
198 enum FlagValueOrigin { | |
199 DEFAULT = 0, | |
200 COMMAND_LINE = 1, | |
201 ENVIRON_VAR = 2, | |
202 CONFIG_FILE = 3, | |
203 MANAGEMENT = 4, | |
204 ERGONOMIC = 5, | |
205 ATTACH_ON_DEMAND = 6, | |
206 INTERNAL = 99 | |
207 }; | |
208 | |
209 struct Flag { | |
210 const char *type; | |
211 const char *name; | |
212 void* addr; | |
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213 |
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214 NOT_PRODUCT(const char *doc;) |
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215 |
0 | 216 const char *kind; |
217 FlagValueOrigin origin; | |
218 | |
219 // points to all Flags static array | |
220 static Flag *flags; | |
221 | |
222 // number of flags | |
223 static size_t numFlags; | |
224 | |
225 static Flag* find_flag(char* name, size_t length); | |
226 | |
227 bool is_bool() const { return strcmp(type, "bool") == 0; } | |
228 bool get_bool() const { return *((bool*) addr); } | |
229 void set_bool(bool value) { *((bool*) addr) = value; } | |
230 | |
231 bool is_intx() const { return strcmp(type, "intx") == 0; } | |
232 intx get_intx() const { return *((intx*) addr); } | |
233 void set_intx(intx value) { *((intx*) addr) = value; } | |
234 | |
235 bool is_uintx() const { return strcmp(type, "uintx") == 0; } | |
236 uintx get_uintx() const { return *((uintx*) addr); } | |
237 void set_uintx(uintx value) { *((uintx*) addr) = value; } | |
238 | |
1064 | 239 bool is_uint64_t() const { return strcmp(type, "uint64_t") == 0; } |
240 uint64_t get_uint64_t() const { return *((uint64_t*) addr); } | |
241 void set_uint64_t(uint64_t value) { *((uint64_t*) addr) = value; } | |
242 | |
0 | 243 bool is_double() const { return strcmp(type, "double") == 0; } |
244 double get_double() const { return *((double*) addr); } | |
245 void set_double(double value) { *((double*) addr) = value; } | |
246 | |
247 bool is_ccstr() const { return strcmp(type, "ccstr") == 0 || strcmp(type, "ccstrlist") == 0; } | |
248 bool ccstr_accumulates() const { return strcmp(type, "ccstrlist") == 0; } | |
249 ccstr get_ccstr() const { return *((ccstr*) addr); } | |
250 void set_ccstr(ccstr value) { *((ccstr*) addr) = value; } | |
251 | |
252 bool is_unlocker() const; | |
253 bool is_unlocked() const; | |
254 bool is_writeable() const; | |
255 bool is_external() const; | |
256 | |
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257 bool is_unlocker_ext() const; |
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258 bool is_unlocked_ext() const; |
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259 bool is_writeable_ext() const; |
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260 bool is_external_ext() const; |
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261 |
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262 void print_on(outputStream* st, bool withComments = false ); |
0 | 263 void print_as_flag(outputStream* st); |
264 }; | |
265 | |
266 // debug flags control various aspects of the VM and are global accessible | |
267 | |
268 // use FlagSetting to temporarily change some debug flag | |
269 // e.g. FlagSetting fs(DebugThisAndThat, true); | |
270 // restored to previous value upon leaving scope | |
271 class FlagSetting { | |
272 bool val; | |
273 bool* flag; | |
274 public: | |
275 FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; } | |
276 ~FlagSetting() { *flag = val; } | |
277 }; | |
278 | |
279 | |
280 class CounterSetting { | |
281 intx* counter; | |
282 public: | |
283 CounterSetting(intx* cnt) { counter = cnt; (*counter)++; } | |
284 ~CounterSetting() { (*counter)--; } | |
285 }; | |
286 | |
287 | |
288 class IntFlagSetting { | |
289 intx val; | |
290 intx* flag; | |
291 public: | |
292 IntFlagSetting(intx& fl, intx newValue) { flag = &fl; val = fl; fl = newValue; } | |
293 ~IntFlagSetting() { *flag = val; } | |
294 }; | |
295 | |
296 | |
297 class DoubleFlagSetting { | |
298 double val; | |
299 double* flag; | |
300 public: | |
301 DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; } | |
302 ~DoubleFlagSetting() { *flag = val; } | |
303 }; | |
304 | |
305 | |
306 class CommandLineFlags { | |
307 public: | |
308 static bool boolAt(char* name, size_t len, bool* value); | |
309 static bool boolAt(char* name, bool* value) { return boolAt(name, strlen(name), value); } | |
310 static bool boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin); | |
311 static bool boolAtPut(char* name, bool* value, FlagValueOrigin origin) { return boolAtPut(name, strlen(name), value, origin); } | |
312 | |
313 static bool intxAt(char* name, size_t len, intx* value); | |
314 static bool intxAt(char* name, intx* value) { return intxAt(name, strlen(name), value); } | |
315 static bool intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin); | |
316 static bool intxAtPut(char* name, intx* value, FlagValueOrigin origin) { return intxAtPut(name, strlen(name), value, origin); } | |
317 | |
318 static bool uintxAt(char* name, size_t len, uintx* value); | |
319 static bool uintxAt(char* name, uintx* value) { return uintxAt(name, strlen(name), value); } | |
320 static bool uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin); | |
321 static bool uintxAtPut(char* name, uintx* value, FlagValueOrigin origin) { return uintxAtPut(name, strlen(name), value, origin); } | |
322 | |
1064 | 323 static bool uint64_tAt(char* name, size_t len, uint64_t* value); |
324 static bool uint64_tAt(char* name, uint64_t* value) { return uint64_tAt(name, strlen(name), value); } | |
325 static bool uint64_tAtPut(char* name, size_t len, uint64_t* value, FlagValueOrigin origin); | |
326 static bool uint64_tAtPut(char* name, uint64_t* value, FlagValueOrigin origin) { return uint64_tAtPut(name, strlen(name), value, origin); } | |
327 | |
0 | 328 static bool doubleAt(char* name, size_t len, double* value); |
329 static bool doubleAt(char* name, double* value) { return doubleAt(name, strlen(name), value); } | |
330 static bool doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin); | |
331 static bool doubleAtPut(char* name, double* value, FlagValueOrigin origin) { return doubleAtPut(name, strlen(name), value, origin); } | |
332 | |
333 static bool ccstrAt(char* name, size_t len, ccstr* value); | |
334 static bool ccstrAt(char* name, ccstr* value) { return ccstrAt(name, strlen(name), value); } | |
335 static bool ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin); | |
336 static bool ccstrAtPut(char* name, ccstr* value, FlagValueOrigin origin) { return ccstrAtPut(name, strlen(name), value, origin); } | |
337 | |
338 // Returns false if name is not a command line flag. | |
339 static bool wasSetOnCmdline(const char* name, bool* value); | |
4773 | 340 static void printSetFlags(outputStream* out); |
0 | 341 |
4773 | 342 static void printFlags(outputStream* out, bool withComments); |
0 | 343 |
344 static void verify() PRODUCT_RETURN; | |
345 }; | |
346 | |
347 // use this for flags that are true by default in the debug version but | |
348 // false in the optimized version, and vice versa | |
349 #ifdef ASSERT | |
350 #define trueInDebug true | |
351 #define falseInDebug false | |
352 #else | |
353 #define trueInDebug false | |
354 #define falseInDebug true | |
355 #endif | |
356 | |
357 // use this for flags that are true per default in the product build | |
358 // but false in development builds, and vice versa | |
359 #ifdef PRODUCT | |
360 #define trueInProduct true | |
361 #define falseInProduct false | |
362 #else | |
363 #define trueInProduct false | |
364 #define falseInProduct true | |
365 #endif | |
366 | |
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367 #ifdef JAVASE_EMBEDDED |
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368 #define falseInEmbedded false |
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369 #else |
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370 #define falseInEmbedded true |
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371 #endif |
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372 |
0 | 373 // develop flags are settable / visible only during development and are constant in the PRODUCT version |
374 // product flags are always settable / visible | |
375 // notproduct flags are settable / visible only during development and are not declared in the PRODUCT version | |
376 | |
377 // A flag must be declared with one of the following types: | |
378 // bool, intx, uintx, ccstr. | |
379 // The type "ccstr" is an alias for "const char*" and is used | |
380 // only in this file, because the macrology requires single-token type names. | |
381 | |
382 // Note: Diagnostic options not meant for VM tuning or for product modes. | |
383 // They are to be used for VM quality assurance or field diagnosis | |
384 // of VM bugs. They are hidden so that users will not be encouraged to | |
385 // try them as if they were VM ordinary execution options. However, they | |
386 // are available in the product version of the VM. Under instruction | |
387 // from support engineers, VM customers can turn them on to collect | |
388 // diagnostic information about VM problems. To use a VM diagnostic | |
389 // option, you must first specify +UnlockDiagnosticVMOptions. | |
390 // (This master switch also affects the behavior of -Xprintflags.) | |
350
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391 // |
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392 // experimental flags are in support of features that are not |
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393 // part of the officially supported product, but are available |
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394 // for experimenting with. They could, for example, be performance |
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395 // features that may not have undergone full or rigorous QA, but which may |
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396 // help performance in some cases and released for experimentation |
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397 // by the community of users and developers. This flag also allows one to |
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398 // be able to build a fully supported product that nonetheless also |
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399 // ships with some unsupported, lightly tested, experimental features. |
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400 // Like the UnlockDiagnosticVMOptions flag above, there is a corresponding |
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401 // UnlockExperimentalVMOptions flag, which allows the control and |
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402 // modification of the experimental flags. |
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403 // |
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404 // Nota bene: neither diagnostic nor experimental options should be used casually, |
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405 // and they are not supported on production loads, except under explicit |
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406 // direction from support engineers. |
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407 // |
0 | 408 // manageable flags are writeable external product flags. |
409 // They are dynamically writeable through the JDK management interface | |
410 // (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole. | |
411 // These flags are external exported interface (see CCC). The list of | |
412 // manageable flags can be queried programmatically through the management | |
413 // interface. | |
414 // | |
415 // A flag can be made as "manageable" only if | |
416 // - the flag is defined in a CCC as an external exported interface. | |
417 // - the VM implementation supports dynamic setting of the flag. | |
418 // This implies that the VM must *always* query the flag variable | |
419 // and not reuse state related to the flag state at any given time. | |
420 // - you want the flag to be queried programmatically by the customers. | |
421 // | |
422 // product_rw flags are writeable internal product flags. | |
423 // They are like "manageable" flags but for internal/private use. | |
424 // The list of product_rw flags are internal/private flags which | |
425 // may be changed/removed in a future release. It can be set | |
426 // through the management interface to get/set value | |
427 // when the name of flag is supplied. | |
428 // | |
429 // A flag can be made as "product_rw" only if | |
430 // - the VM implementation supports dynamic setting of the flag. | |
431 // This implies that the VM must *always* query the flag variable | |
432 // and not reuse state related to the flag state at any given time. | |
433 // | |
434 // Note that when there is a need to support develop flags to be writeable, | |
435 // it can be done in the same way as product_rw. | |
436 | |
350
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437 #define RUNTIME_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw, lp64_product) \ |
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438 \ |
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439 lp64_product(bool, UseCompressedOops, false, \ |
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440 "Use 32-bit object references in 64-bit VM. " \ |
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441 "lp64_product means flag is always constant in 32 bit VM") \ |
0 | 442 \ |
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443 notproduct(bool, CheckCompressedOops, true, \ |
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444 "generate checks in encoding/decoding code in debug VM") \ |
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445 \ |
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446 product_pd(uintx, HeapBaseMinAddress, \ |
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447 "OS specific low limit for heap base address") \ |
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448 \ |
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449 diagnostic(bool, PrintCompressedOopsMode, false, \ |
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450 "Print compressed oops base address and encoding mode") \ |
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451 \ |
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452 lp64_product(intx, ObjectAlignmentInBytes, 8, \ |
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453 "Default object alignment in bytes, 8 is minimum") \ |
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454 \ |
0 | 455 /* UseMembar is theoretically a temp flag used for memory barrier \ |
456 * removal testing. It was supposed to be removed before FCS but has \ | |
457 * been re-added (see 6401008) */ \ | |
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458 product_pd(bool, UseMembar, \ |
0 | 459 "(Unstable) Issues membars on thread state transitions") \ |
460 \ | |
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461 /* Temp PPC Flag to allow disabling the use of lwsync on ppc platforms \ |
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462 * that don't support it. This will be replaced by processor detection \ |
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463 * logic. \ |
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464 */ \ |
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465 product(bool, UsePPCLWSYNC, true, \ |
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466 "Use lwsync instruction if true, else use slower sync") \ |
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467 \ |
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468 develop(bool, CleanChunkPoolAsync, falseInEmbedded, \ |
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469 "Whether to clean the chunk pool asynchronously") \ |
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470 \ |
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471 /* Temporary: See 6948537 */ \ |
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472 experimental(bool, UseMemSetInBOT, true, \ |
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473 "(Unstable) uses memset in BOT updates in GC code") \ |
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474 \ |
0 | 475 diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \ |
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476 "Enable normal processing of flags relating to field diagnostics")\ |
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477 \ |
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478 experimental(bool, UnlockExperimentalVMOptions, false, \ |
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479 "Enable normal processing of flags relating to experimental features")\ |
0 | 480 \ |
481 product(bool, JavaMonitorsInStackTrace, true, \ | |
482 "Print info. about Java monitor locks when the stacks are dumped")\ | |
483 \ | |
484 product_pd(bool, UseLargePages, \ | |
485 "Use large page memory") \ | |
486 \ | |
389
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487 product_pd(bool, UseLargePagesIndividualAllocation, \ |
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488 "Allocate large pages individually for better affinity") \ |
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489 \ |
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490 develop(bool, LargePagesIndividualAllocationInjectError, false, \ |
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491 "Fail large pages individual allocation") \ |
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492 \ |
0 | 493 develop(bool, TracePageSizes, false, \ |
494 "Trace page size selection and usage.") \ | |
495 \ | |
496 product(bool, UseNUMA, false, \ | |
497 "Use NUMA if available") \ | |
498 \ | |
3885 | 499 product(bool, UseNUMAInterleaving, false, \ |
500 "Interleave memory across NUMA nodes if available") \ | |
501 \ | |
502 product(uintx, NUMAInterleaveGranularity, 2*M, \ | |
503 "Granularity to use for NUMA interleaving on Windows OS") \ | |
504 \ | |
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505 product(bool, ForceNUMA, false, \ |
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506 "Force NUMA optimizations on single-node/UMA systems") \ |
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507 \ |
0 | 508 product(intx, NUMAChunkResizeWeight, 20, \ |
509 "Percentage (0-100) used to weight the current sample when " \ | |
510 "computing exponentially decaying average for " \ | |
511 "AdaptiveNUMAChunkSizing") \ | |
512 \ | |
513 product(intx, NUMASpaceResizeRate, 1*G, \ | |
514 "Do not reallocate more that this amount per collection") \ | |
515 \ | |
516 product(bool, UseAdaptiveNUMAChunkSizing, true, \ | |
517 "Enable adaptive chunk sizing for NUMA") \ | |
518 \ | |
519 product(bool, NUMAStats, false, \ | |
520 "Print NUMA stats in detailed heap information") \ | |
521 \ | |
522 product(intx, NUMAPageScanRate, 256, \ | |
523 "Maximum number of pages to include in the page scan procedure") \ | |
524 \ | |
525 product_pd(bool, NeedsDeoptSuspend, \ | |
526 "True for register window machines (sparc/ia64)") \ | |
527 \ | |
528 product(intx, UseSSE, 99, \ | |
529 "Highest supported SSE instructions set on x86/x64") \ | |
530 \ | |
4759 | 531 product(intx, UseAVX, 99, \ |
532 "Highest supported AVX instructions set on x86/x64") \ | |
533 \ | |
3804 | 534 product(intx, UseVIS, 99, \ |
535 "Highest supported VIS instructions set on Sparc") \ | |
536 \ | |
0 | 537 product(uintx, LargePageSizeInBytes, 0, \ |
538 "Large page size (0 to let VM choose the page size") \ | |
539 \ | |
540 product(uintx, LargePageHeapSizeThreshold, 128*M, \ | |
541 "Use large pages if max heap is at least this big") \ | |
542 \ | |
543 product(bool, ForceTimeHighResolution, false, \ | |
544 "Using high time resolution(For Win32 only)") \ | |
545 \ | |
546 develop(bool, TraceItables, false, \ | |
547 "Trace initialization and use of itables") \ | |
548 \ | |
549 develop(bool, TracePcPatching, false, \ | |
550 "Trace usage of frame::patch_pc") \ | |
551 \ | |
552 develop(bool, TraceJumps, false, \ | |
553 "Trace assembly jumps in thread ring buffer") \ | |
554 \ | |
555 develop(bool, TraceRelocator, false, \ | |
556 "Trace the bytecode relocator") \ | |
557 \ | |
558 develop(bool, TraceLongCompiles, false, \ | |
559 "Print out every time compilation is longer than " \ | |
560 "a given threashold") \ | |
561 \ | |
562 develop(bool, SafepointALot, false, \ | |
563 "Generates a lot of safepoints. Works with " \ | |
564 "GuaranteedSafepointInterval") \ | |
565 \ | |
566 product_pd(bool, BackgroundCompilation, \ | |
567 "A thread requesting compilation is not blocked during " \ | |
568 "compilation") \ | |
569 \ | |
570 product(bool, PrintVMQWaitTime, false, \ | |
571 "Prints out the waiting time in VM operation queue") \ | |
572 \ | |
573 develop(bool, BailoutToInterpreterForThrows, false, \ | |
574 "Compiled methods which throws/catches exceptions will be " \ | |
575 "deopt and intp.") \ | |
576 \ | |
577 develop(bool, NoYieldsInMicrolock, false, \ | |
578 "Disable yields in microlock") \ | |
579 \ | |
580 develop(bool, TraceOopMapGeneration, false, \ | |
581 "Shows oopmap generation") \ | |
582 \ | |
583 product(bool, MethodFlushing, true, \ | |
584 "Reclamation of zombie and not-entrant methods") \ | |
585 \ | |
586 develop(bool, VerifyStack, false, \ | |
587 "Verify stack of each thread when it is entering a runtime call") \ | |
588 \ | |
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589 diagnostic(bool, ForceUnreachable, false, \ |
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590 "Make all non code cache addresses to be unreachable with forcing use of 64bit literal fixups") \ |
0 | 591 \ |
592 notproduct(bool, StressDerivedPointers, false, \ | |
593 "Force scavenge when a derived pointers is detected on stack " \ | |
594 "after rtm call") \ | |
595 \ | |
596 develop(bool, TraceDerivedPointers, false, \ | |
597 "Trace traversal of derived pointers on stack") \ | |
598 \ | |
599 notproduct(bool, TraceCodeBlobStacks, false, \ | |
600 "Trace stack-walk of codeblobs") \ | |
601 \ | |
602 product(bool, PrintJNIResolving, false, \ | |
603 "Used to implement -v:jni") \ | |
604 \ | |
605 notproduct(bool, PrintRewrites, false, \ | |
606 "Print methods that are being rewritten") \ | |
607 \ | |
608 product(bool, UseInlineCaches, true, \ | |
609 "Use Inline Caches for virtual calls ") \ | |
610 \ | |
611 develop(bool, InlineArrayCopy, true, \ | |
612 "inline arraycopy native that is known to be part of " \ | |
613 "base library DLL") \ | |
614 \ | |
615 develop(bool, InlineObjectHash, true, \ | |
616 "inline Object::hashCode() native that is known to be part " \ | |
617 "of base library DLL") \ | |
618 \ | |
619 develop(bool, InlineObjectCopy, true, \ | |
620 "inline Object.clone and Arrays.copyOf[Range] intrinsics") \ | |
621 \ | |
622 develop(bool, InlineNatives, true, \ | |
623 "inline natives that are known to be part of base library DLL") \ | |
624 \ | |
625 develop(bool, InlineMathNatives, true, \ | |
626 "inline SinD, CosD, etc.") \ | |
627 \ | |
628 develop(bool, InlineClassNatives, true, \ | |
629 "inline Class.isInstance, etc") \ | |
630 \ | |
631 develop(bool, InlineAtomicLong, true, \ | |
632 "inline sun.misc.AtomicLong") \ | |
633 \ | |
634 develop(bool, InlineThreadNatives, true, \ | |
635 "inline Thread.currentThread, etc") \ | |
636 \ | |
637 develop(bool, InlineReflectionGetCallerClass, true, \ | |
638 "inline sun.reflect.Reflection.getCallerClass(), known to be part "\ | |
639 "of base library DLL") \ | |
640 \ | |
641 develop(bool, InlineUnsafeOps, true, \ | |
642 "inline memory ops (native methods) from sun.misc.Unsafe") \ | |
643 \ | |
644 develop(bool, ConvertCmpD2CmpF, true, \ | |
645 "Convert cmpD to cmpF when one input is constant in float range") \ | |
646 \ | |
647 develop(bool, ConvertFloat2IntClipping, true, \ | |
648 "Convert float2int clipping idiom to integer clipping") \ | |
649 \ | |
650 develop(bool, SpecialStringCompareTo, true, \ | |
651 "special version of string compareTo") \ | |
652 \ | |
653 develop(bool, SpecialStringIndexOf, true, \ | |
654 "special version of string indexOf") \ | |
655 \ | |
681 | 656 develop(bool, SpecialStringEquals, true, \ |
657 "special version of string equals") \ | |
658 \ | |
659 develop(bool, SpecialArraysEquals, true, \ | |
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660 "special version of Arrays.equals(char[],char[])") \ |
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661 \ |
681 | 662 product(bool, UseSSE42Intrinsics, false, \ |
663 "SSE4.2 versions of intrinsics") \ | |
664 \ | |
3282 | 665 product(bool, UseCondCardMark, false, \ |
666 "Check for already marked card before updating card table") \ | |
667 \ | |
0 | 668 develop(bool, TraceCallFixup, false, \ |
669 "traces all call fixups") \ | |
670 \ | |
671 develop(bool, DeoptimizeALot, false, \ | |
672 "deoptimize at every exit from the runtime system") \ | |
673 \ | |
434 | 674 notproduct(ccstrlist, DeoptimizeOnlyAt, "", \ |
0 | 675 "a comma separated list of bcis to deoptimize at") \ |
676 \ | |
677 product(bool, DeoptimizeRandom, false, \ | |
678 "deoptimize random frames on random exit from the runtime system")\ | |
679 \ | |
680 notproduct(bool, ZombieALot, false, \ | |
681 "creates zombies (non-entrant) at exit from the runt. system") \ | |
682 \ | |
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683 product(bool, UnlinkSymbolsALot, false, \ |
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684 "unlink unreferenced symbols from the symbol table at safepoints")\ |
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685 \ |
0 | 686 notproduct(bool, WalkStackALot, false, \ |
687 "trace stack (no print) at every exit from the runtime system") \ | |
688 \ | |
4006 | 689 product(bool, Debugging, false, \ |
0 | 690 "set when executing debug methods in debug.ccp " \ |
691 "(to prevent triggering assertions)") \ | |
692 \ | |
693 notproduct(bool, StrictSafepointChecks, trueInDebug, \ | |
694 "Enable strict checks that safepoints cannot happen for threads " \ | |
695 "that used No_Safepoint_Verifier") \ | |
696 \ | |
697 notproduct(bool, VerifyLastFrame, false, \ | |
698 "Verify oops on last frame on entry to VM") \ | |
699 \ | |
700 develop(bool, TraceHandleAllocation, false, \ | |
701 "Prints out warnings when suspicious many handles are allocated") \ | |
702 \ | |
703 product(bool, UseCompilerSafepoints, true, \ | |
704 "Stop at safepoints in compiled code") \ | |
705 \ | |
706 product(bool, UseSplitVerifier, true, \ | |
707 "use split verifier with StackMapTable attributes") \ | |
708 \ | |
709 product(bool, FailOverToOldVerifier, true, \ | |
710 "fail over to old verifier when split verifier fails") \ | |
711 \ | |
712 develop(bool, ShowSafepointMsgs, false, \ | |
713 "Show msg. about safepoint synch.") \ | |
714 \ | |
715 product(bool, SafepointTimeout, false, \ | |
716 "Time out and warn or fail after SafepointTimeoutDelay " \ | |
717 "milliseconds if failed to reach safepoint") \ | |
718 \ | |
719 develop(bool, DieOnSafepointTimeout, false, \ | |
720 "Die upon failure to reach safepoint (see SafepointTimeout)") \ | |
721 \ | |
722 /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \ | |
723 /* typically, at most a few retries are needed */ \ | |
724 product(intx, SuspendRetryCount, 50, \ | |
725 "Maximum retry count for an external suspend request") \ | |
726 \ | |
727 product(intx, SuspendRetryDelay, 5, \ | |
728 "Milliseconds to delay per retry (* current_retry_count)") \ | |
729 \ | |
730 product(bool, AssertOnSuspendWaitFailure, false, \ | |
731 "Assert/Guarantee on external suspend wait failure") \ | |
732 \ | |
733 product(bool, TraceSuspendWaitFailures, false, \ | |
734 "Trace external suspend wait failures") \ | |
735 \ | |
736 product(bool, MaxFDLimit, true, \ | |
737 "Bump the number of file descriptors to max in solaris.") \ | |
738 \ | |
4872
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739 diagnostic(bool, LogEvents, true, \ |
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740 "Enable the various ring buffer event logs") \ |
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|
741 \ |
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742 diagnostic(intx, LogEventsBufferEntries, 10, \ |
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743 "Enable the various ring buffer event logs") \ |
0 | 744 \ |
745 product(bool, BytecodeVerificationRemote, true, \ | |
746 "Enables the Java bytecode verifier for remote classes") \ | |
747 \ | |
748 product(bool, BytecodeVerificationLocal, false, \ | |
749 "Enables the Java bytecode verifier for local classes") \ | |
750 \ | |
751 develop(bool, ForceFloatExceptions, trueInDebug, \ | |
752 "Force exceptions on FP stack under/overflow") \ | |
753 \ | |
754 develop(bool, SoftMatchFailure, trueInProduct, \ | |
755 "If the DFA fails to match a node, print a message and bail out") \ | |
756 \ | |
757 develop(bool, VerifyStackAtCalls, false, \ | |
758 "Verify that the stack pointer is unchanged after calls") \ | |
759 \ | |
760 develop(bool, TraceJavaAssertions, false, \ | |
761 "Trace java language assertions") \ | |
762 \ | |
763 notproduct(bool, CheckAssertionStatusDirectives, false, \ | |
764 "temporary - see javaClasses.cpp") \ | |
765 \ | |
766 notproduct(bool, PrintMallocFree, false, \ | |
767 "Trace calls to C heap malloc/free allocation") \ | |
768 \ | |
1681
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769 product(bool, PrintOopAddress, false, \ |
0 | 770 "Always print the location of the oop") \ |
771 \ | |
772 notproduct(bool, VerifyCodeCacheOften, false, \ | |
773 "Verify compiled-code cache often") \ | |
774 \ | |
775 develop(bool, ZapDeadCompiledLocals, false, \ | |
776 "Zap dead locals in compiler frames") \ | |
777 \ | |
778 notproduct(bool, ZapDeadLocalsOld, false, \ | |
779 "Zap dead locals (old version, zaps all frames when " \ | |
780 "entering the VM") \ | |
781 \ | |
782 notproduct(bool, CheckOopishValues, false, \ | |
783 "Warn if value contains oop ( requires ZapDeadLocals)") \ | |
784 \ | |
785 develop(bool, UseMallocOnly, false, \ | |
786 "use only malloc/free for allocation (no resource area/arena)") \ | |
787 \ | |
788 develop(bool, PrintMalloc, false, \ | |
789 "print all malloc/free calls") \ | |
790 \ | |
2250 | 791 develop(bool, PrintMallocStatistics, false, \ |
792 "print malloc/free statistics") \ | |
793 \ | |
0 | 794 develop(bool, ZapResourceArea, trueInDebug, \ |
795 "Zap freed resource/arena space with 0xABABABAB") \ | |
796 \ | |
797 notproduct(bool, ZapVMHandleArea, trueInDebug, \ | |
798 "Zap freed VM handle space with 0xBCBCBCBC") \ | |
799 \ | |
800 develop(bool, ZapJNIHandleArea, trueInDebug, \ | |
801 "Zap freed JNI handle space with 0xFEFEFEFE") \ | |
802 \ | |
1836
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803 notproduct(bool, ZapStackSegments, trueInDebug, \ |
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804 "Zap allocated/freed Stack segments with 0xFADFADED") \ |
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805 \ |
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806 develop(bool, ZapUnusedHeapArea, trueInDebug, \ |
0 | 807 "Zap unused heap space with 0xBAADBABE") \ |
808 \ | |
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809 develop(bool, TraceZapUnusedHeapArea, false, \ |
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810 "Trace zapping of unused heap space") \ |
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811 \ |
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|
812 develop(bool, CheckZapUnusedHeapArea, false, \ |
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813 "Check zapping of unused heap space") \ |
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814 \ |
481
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815 develop(bool, ZapFillerObjects, trueInDebug, \ |
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816 "Zap filler objects with 0xDEAFBABE") \ |
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817 \ |
0 | 818 develop(bool, PrintVMMessages, true, \ |
819 "Print vm messages on console") \ | |
820 \ | |
821 product(bool, PrintGCApplicationConcurrentTime, false, \ | |
822 "Print the time the application has been running") \ | |
823 \ | |
824 product(bool, PrintGCApplicationStoppedTime, false, \ | |
825 "Print the time the application has been stopped") \ | |
826 \ | |
1490
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827 notproduct(uintx, ErrorHandlerTest, 0, \ |
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828 "If > 0, provokes an error after VM initialization; the value" \ |
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829 "determines which error to provoke. See test_error_handler()" \ |
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830 "in debug.cpp.") \ |
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831 \ |
0 | 832 develop(bool, Verbose, false, \ |
833 "Prints additional debugging information from other modes") \ | |
834 \ | |
835 develop(bool, PrintMiscellaneous, false, \ | |
836 "Prints uncategorized debugging information (requires +Verbose)") \ | |
837 \ | |
838 develop(bool, WizardMode, false, \ | |
839 "Prints much more debugging information") \ | |
840 \ | |
841 product(bool, ShowMessageBoxOnError, false, \ | |
842 "Keep process alive on VM fatal error") \ | |
843 \ | |
2204
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844 product(bool, CreateMinidumpOnCrash, false, \ |
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845 "Create minidump on VM fatal error") \ |
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846 \ |
0 | 847 product_pd(bool, UseOSErrorReporting, \ |
848 "Let VM fatal error propagate to the OS (ie. WER on Windows)") \ | |
849 \ | |
850 product(bool, SuppressFatalErrorMessage, false, \ | |
851 "Do NO Fatal Error report [Avoid deadlock]") \ | |
852 \ | |
853 product(ccstrlist, OnError, "", \ | |
854 "Run user-defined commands on fatal error; see VMError.cpp " \ | |
855 "for examples") \ | |
856 \ | |
857 product(ccstrlist, OnOutOfMemoryError, "", \ | |
858 "Run user-defined commands on first java.lang.OutOfMemoryError") \ | |
859 \ | |
615
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860 manageable(bool, HeapDumpBeforeFullGC, false, \ |
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861 "Dump heap to file before any major stop-world GC") \ |
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862 \ |
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|
863 manageable(bool, HeapDumpAfterFullGC, false, \ |
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864 "Dump heap to file after any major stop-world GC") \ |
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865 \ |
0 | 866 manageable(bool, HeapDumpOnOutOfMemoryError, false, \ |
867 "Dump heap to file when java.lang.OutOfMemoryError is thrown") \ | |
868 \ | |
869 manageable(ccstr, HeapDumpPath, NULL, \ | |
870 "When HeapDumpOnOutOfMemoryError is on, the path (filename or" \ | |
871 "directory) of the dump file (defaults to java_pid<pid>.hprof" \ | |
872 "in the working directory)") \ | |
873 \ | |
874 develop(uintx, SegmentedHeapDumpThreshold, 2*G, \ | |
875 "Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) " \ | |
876 "when the heap usage is larger than this") \ | |
877 \ | |
878 develop(uintx, HeapDumpSegmentSize, 1*G, \ | |
879 "Approximate segment size when generating a segmented heap dump") \ | |
880 \ | |
881 develop(bool, BreakAtWarning, false, \ | |
882 "Execute breakpoint upon encountering VM warning") \ | |
883 \ | |
884 product_pd(bool, UseVectoredExceptions, \ | |
885 "Temp Flag - Use Vectored Exceptions rather than SEH (Windows Only)") \ | |
886 \ | |
887 develop(bool, TraceVMOperation, false, \ | |
888 "Trace vm operations") \ | |
889 \ | |
890 develop(bool, UseFakeTimers, false, \ | |
891 "Tells whether the VM should use system time or a fake timer") \ | |
892 \ | |
893 diagnostic(bool, LogCompilation, false, \ | |
894 "Log compilation activity in detail to hotspot.log or LogFile") \ | |
895 \ | |
896 product(bool, PrintCompilation, false, \ | |
897 "Print compilations") \ | |
898 \ | |
899 diagnostic(bool, TraceNMethodInstalls, false, \ | |
900 "Trace nmethod intallation") \ | |
901 \ | |
4119
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902 diagnostic(intx, ScavengeRootsInCode, 2, \ |
989
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903 "0: do not allow scavengable oops in the code cache; " \ |
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904 "1: allow scavenging from the code cache; " \ |
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905 "2: emit as many constants as the compiler can see") \ |
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906 \ |
0 | 907 diagnostic(bool, TraceOSRBreakpoint, false, \ |
908 "Trace OSR Breakpoint ") \ | |
909 \ | |
910 diagnostic(bool, TraceCompileTriggered, false, \ | |
911 "Trace compile triggered") \ | |
912 \ | |
913 diagnostic(bool, TraceTriggers, false, \ | |
914 "Trace triggers") \ | |
915 \ | |
916 product(bool, AlwaysRestoreFPU, false, \ | |
917 "Restore the FPU control word after every JNI call (expensive)") \ | |
918 \ | |
4064
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919 diagnostic(bool, PrintCompilation2, false, \ |
0 | 920 "Print additional statistics per compilation") \ |
921 \ | |
100
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922 diagnostic(bool, PrintAdapterHandlers, false, \ |
0 | 923 "Print code generated for i2c/c2i adapters") \ |
924 \ | |
1207
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|
925 develop(bool, VerifyAdapterSharing, false, \ |
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|
926 "Verify that the code for shared adapters is the equivalent") \ |
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|
927 \ |
100
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|
928 diagnostic(bool, PrintAssembly, false, \ |
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|
929 "Print assembly code (using external disassembler.so)") \ |
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|
930 \ |
370
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|
931 diagnostic(ccstr, PrintAssemblyOptions, NULL, \ |
100
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|
932 "Options string passed to disassembler.so") \ |
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|
933 \ |
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|
934 diagnostic(bool, PrintNMethods, false, \ |
0 | 935 "Print assembly code for nmethods when generated") \ |
936 \ | |
100
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937 diagnostic(bool, PrintNativeNMethods, false, \ |
0 | 938 "Print assembly code for native nmethods when generated") \ |
939 \ | |
940 develop(bool, PrintDebugInfo, false, \ | |
941 "Print debug information for all nmethods when generated") \ | |
942 \ | |
943 develop(bool, PrintRelocations, false, \ | |
944 "Print relocation information for all nmethods when generated") \ | |
945 \ | |
946 develop(bool, PrintDependencies, false, \ | |
947 "Print dependency information for all nmethods when generated") \ | |
948 \ | |
949 develop(bool, PrintExceptionHandlers, false, \ | |
950 "Print exception handler tables for all nmethods when generated") \ | |
951 \ | |
952 develop(bool, InterceptOSException, false, \ | |
953 "Starts debugger when an implicit OS (e.g., NULL) " \ | |
954 "exception happens") \ | |
955 \ | |
956 notproduct(bool, PrintCodeCache, false, \ | |
957 "Print the compiled_code cache when exiting") \ | |
958 \ | |
959 develop(bool, PrintCodeCache2, false, \ | |
960 "Print detailed info on the compiled_code cache when exiting") \ | |
961 \ | |
100
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962 diagnostic(bool, PrintStubCode, false, \ |
0 | 963 "Print generated stub code") \ |
964 \ | |
965 product(bool, StackTraceInThrowable, true, \ | |
966 "Collect backtrace in throwable when exception happens") \ | |
967 \ | |
968 product(bool, OmitStackTraceInFastThrow, true, \ | |
969 "Omit backtraces for some 'hot' exceptions in optimized code") \ | |
970 \ | |
971 product(bool, ProfilerPrintByteCodeStatistics, false, \ | |
972 "Prints byte code statictics when dumping profiler output") \ | |
973 \ | |
974 product(bool, ProfilerRecordPC, false, \ | |
975 "Collects tick for each 16 byte interval of compiled code") \ | |
976 \ | |
1064 | 977 product(bool, ProfileVM, false, \ |
0 | 978 "Profiles ticks that fall within VM (either in the VM Thread " \ |
979 "or VM code called through stubs)") \ | |
980 \ | |
981 product(bool, ProfileIntervals, false, \ | |
982 "Prints profiles for each interval (see ProfileIntervalsTicks)") \ | |
983 \ | |
984 notproduct(bool, ProfilerCheckIntervals, false, \ | |
985 "Collect and print info on spacing of profiler ticks") \ | |
986 \ | |
987 develop(bool, PrintJVMWarnings, false, \ | |
988 "Prints warnings for unimplemented JVM functions") \ | |
989 \ | |
1870
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990 product(bool, PrintWarnings, true, \ |
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|
991 "Prints JVM warnings to output stream") \ |
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992 \ |
0 | 993 notproduct(uintx, WarnOnStalledSpinLock, 0, \ |
994 "Prints warnings for stalled SpinLocks") \ | |
995 \ | |
996 develop(bool, InitializeJavaLangSystem, true, \ | |
997 "Initialize java.lang.System - turn off for individual " \ | |
998 "method debugging") \ | |
999 \ | |
1000 develop(bool, InitializeJavaLangString, true, \ | |
1001 "Initialize java.lang.String - turn off for individual " \ | |
1002 "method debugging") \ | |
1003 \ | |
1004 develop(bool, InitializeJavaLangExceptionsErrors, true, \ | |
1005 "Initialize various error and exception classes - turn off for " \ | |
1006 "individual method debugging") \ | |
1007 \ | |
1008 product(bool, RegisterFinalizersAtInit, true, \ | |
1009 "Register finalizable objects at end of Object.<init> or " \ | |
1064 | 1010 "after allocation") \ |
0 | 1011 \ |
1012 develop(bool, RegisterReferences, true, \ | |
1013 "Tells whether the VM should register soft/weak/final/phantom " \ | |
1014 "references") \ | |
1015 \ | |
1016 develop(bool, IgnoreRewrites, false, \ | |
1017 "Supress rewrites of bytecodes in the oopmap generator. " \ | |
1018 "This is unsafe!") \ | |
1019 \ | |
1020 develop(bool, PrintCodeCacheExtension, false, \ | |
1021 "Print extension of code cache") \ | |
1022 \ | |
1023 develop(bool, UsePrivilegedStack, true, \ | |
1024 "Enable the security JVM functions") \ | |
1025 \ | |
1026 develop(bool, IEEEPrecision, true, \ | |
1027 "Enables IEEE precision (for INTEL only)") \ | |
1028 \ | |
1029 develop(bool, ProtectionDomainVerification, true, \ | |
1030 "Verifies protection domain before resolution in system " \ | |
1031 "dictionary") \ | |
1032 \ | |
1033 product(bool, ClassUnloading, true, \ | |
1034 "Do unloading of classes") \ | |
1035 \ | |
474
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1036 diagnostic(bool, LinkWellKnownClasses, false, \ |
132
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1037 "Resolve a well known class as soon as its name is seen") \ |
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1038 \ |
0 | 1039 develop(bool, DisableStartThread, false, \ |
1040 "Disable starting of additional Java threads " \ | |
1041 "(for debugging only)") \ | |
1042 \ | |
1043 develop(bool, MemProfiling, false, \ | |
1044 "Write memory usage profiling to log file") \ | |
1045 \ | |
1046 notproduct(bool, PrintSystemDictionaryAtExit, false, \ | |
1047 "Prints the system dictionary at exit") \ | |
1048 \ | |
1049 diagnostic(bool, UnsyncloadClass, false, \ | |
514 | 1050 "Unstable: VM calls loadClass unsynchronized. Custom " \ |
1051 "class loader must call VM synchronized for findClass " \ | |
1052 "and defineClass.") \ | |
1053 \ | |
1054 product(bool, AlwaysLockClassLoader, false, \ | |
1055 "Require the VM to acquire the class loader lock before calling " \ | |
1056 "loadClass() even for class loaders registering " \ | |
1064 | 1057 "as parallel capable") \ |
514 | 1058 \ |
1059 product(bool, AllowParallelDefineClass, false, \ | |
1060 "Allow parallel defineClass requests for class loaders " \ | |
1064 | 1061 "registering as parallel capable") \ |
514 | 1062 \ |
1063 product(bool, MustCallLoadClassInternal, false, \ | |
1064 | 1064 "Call loadClassInternal() rather than loadClass()") \ |
0 | 1065 \ |
1066 product_pd(bool, DontYieldALot, \ | |
1067 "Throw away obvious excess yield calls (for SOLARIS only)") \ | |
1068 \ | |
1069 product_pd(bool, ConvertSleepToYield, \ | |
1070 "Converts sleep(0) to thread yield " \ | |
1071 "(may be off for SOLARIS to improve GUI)") \ | |
1072 \ | |
1073 product(bool, ConvertYieldToSleep, false, \ | |
1074 "Converts yield to a sleep of MinSleepInterval to simulate Win32 "\ | |
1075 "behavior (SOLARIS only)") \ | |
1076 \ | |
1077 product(bool, UseBoundThreads, true, \ | |
1078 "Bind user level threads to kernel threads (for SOLARIS only)") \ | |
1079 \ | |
1080 develop(bool, UseDetachedThreads, true, \ | |
1081 "Use detached threads that are recycled upon termination " \ | |
1082 "(for SOLARIS only)") \ | |
1083 \ | |
1084 product(bool, UseLWPSynchronization, true, \ | |
1085 "Use LWP-based instead of libthread-based synchronization " \ | |
1086 "(SPARC only)") \ | |
1087 \ | |
370
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1088 product(ccstr, SyncKnobs, NULL, \ |
0 | 1089 "(Unstable) Various monitor synchronization tunables") \ |
1090 \ | |
1091 product(intx, EmitSync, 0, \ | |
1092 "(Unsafe,Unstable) " \ | |
1093 " Controls emission of inline sync fast-path code") \ | |
1094 \ | |
1095 product(intx, AlwaysInflate, 0, "(Unstable) Force inflation") \ | |
1096 \ | |
1587 | 1097 product(intx, MonitorBound, 0, "Bound Monitor population") \ |
1098 \ | |
1099 product(bool, MonitorInUseLists, false, "Track Monitors for Deflation") \ | |
1100 \ | |
0 | 1101 product(intx, Atomics, 0, \ |
1102 "(Unsafe,Unstable) Diagnostic - Controls emission of atomics") \ | |
1103 \ | |
1104 product(intx, FenceInstruction, 0, \ | |
1105 "(Unsafe,Unstable) Experimental") \ | |
1106 \ | |
1107 product(intx, SyncFlags, 0, "(Unsafe,Unstable) Experimental Sync flags" ) \ | |
1108 \ | |
1109 product(intx, SyncVerbose, 0, "(Unstable)" ) \ | |
1110 \ | |
1111 product(intx, ClearFPUAtPark, 0, "(Unsafe,Unstable)" ) \ | |
1112 \ | |
1113 product(intx, hashCode, 0, \ | |
1114 "(Unstable) select hashCode generation algorithm" ) \ | |
1115 \ | |
1116 product(intx, WorkAroundNPTLTimedWaitHang, 1, \ | |
1117 "(Unstable, Linux-specific)" \ | |
1118 " avoid NPTL-FUTEX hang pthread_cond_timedwait" ) \ | |
1119 \ | |
1064 | 1120 product(bool, FilterSpuriousWakeups, true, \ |
1121 "Prevent spurious or premature wakeups from object.wait " \ | |
1122 "(Solaris only)") \ | |
0 | 1123 \ |
1124 product(intx, NativeMonitorTimeout, -1, "(Unstable)" ) \ | |
1125 product(intx, NativeMonitorFlags, 0, "(Unstable)" ) \ | |
1126 product(intx, NativeMonitorSpinLimit, 20, "(Unstable)" ) \ | |
1127 \ | |
1128 develop(bool, UsePthreads, false, \ | |
1129 "Use pthread-based instead of libthread-based synchronization " \ | |
1130 "(SPARC only)") \ | |
1131 \ | |
1132 product(bool, AdjustConcurrency, false, \ | |
1133 "call thr_setconcurrency at thread create time to avoid " \ | |
1134 "LWP starvation on MP systems (For Solaris Only)") \ | |
1135 \ | |
1136 develop(bool, UpdateHotSpotCompilerFileOnError, true, \ | |
1137 "Should the system attempt to update the compiler file when " \ | |
1138 "an error occurs?") \ | |
1139 \ | |
1140 product(bool, ReduceSignalUsage, false, \ | |
1141 "Reduce the use of OS signals in Java and/or the VM") \ | |
1142 \ | |
1143 notproduct(bool, ValidateMarkSweep, false, \ | |
1144 "Do extra validation during MarkSweep collection") \ | |
1145 \ | |
1146 notproduct(bool, RecordMarkSweepCompaction, false, \ | |
1147 "Enable GC-to-GC recording and querying of compaction during " \ | |
1148 "MarkSweep") \ | |
1149 \ | |
1150 develop_pd(bool, ShareVtableStubs, \ | |
1151 "Share vtable stubs (smaller code but worse branch prediction") \ | |
1152 \ | |
1153 develop(bool, LoadLineNumberTables, true, \ | |
1154 "Tells whether the class file parser loads line number tables") \ | |
1155 \ | |
1156 develop(bool, LoadLocalVariableTables, true, \ | |
1157 "Tells whether the class file parser loads local variable tables")\ | |
1158 \ | |
1159 develop(bool, LoadLocalVariableTypeTables, true, \ | |
1160 "Tells whether the class file parser loads local variable type tables")\ | |
1161 \ | |
1162 product(bool, AllowUserSignalHandlers, false, \ | |
1163 "Do not complain if the application installs signal handlers " \ | |
1164 "(Solaris & Linux only)") \ | |
1165 \ | |
1166 product(bool, UseSignalChaining, true, \ | |
1167 "Use signal-chaining to invoke signal handlers installed " \ | |
1168 "by the application (Solaris & Linux only)") \ | |
1169 \ | |
1170 product(bool, UseAltSigs, false, \ | |
1171 "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \ | |
1064 | 1172 "internal signals (Solaris only)") \ |
0 | 1173 \ |
1174 product(bool, UseSpinning, false, \ | |
1175 "Use spinning in monitor inflation and before entry") \ | |
1176 \ | |
1177 product(bool, PreSpinYield, false, \ | |
1178 "Yield before inner spinning loop") \ | |
1179 \ | |
1180 product(bool, PostSpinYield, true, \ | |
1181 "Yield after inner spinning loop") \ | |
1182 \ | |
1183 product(bool, AllowJNIEnvProxy, false, \ | |
1184 "Allow JNIEnv proxies for jdbx") \ | |
1185 \ | |
1186 product(bool, JNIDetachReleasesMonitors, true, \ | |
1187 "JNI DetachCurrentThread releases monitors owned by thread") \ | |
1188 \ | |
1189 product(bool, RestoreMXCSROnJNICalls, false, \ | |
1190 "Restore MXCSR when returning from JNI calls") \ | |
1191 \ | |
1192 product(bool, CheckJNICalls, false, \ | |
1193 "Verify all arguments to JNI calls") \ | |
1194 \ | |
1195 product(bool, UseFastJNIAccessors, true, \ | |
1196 "Use optimized versions of Get<Primitive>Field") \ | |
1197 \ | |
1198 product(bool, EagerXrunInit, false, \ | |
1199 "Eagerly initialize -Xrun libraries; allows startup profiling, " \ | |
1200 " but not all -Xrun libraries may support the state of the VM at this time") \ | |
1201 \ | |
1202 product(bool, PreserveAllAnnotations, false, \ | |
1203 "Preserve RuntimeInvisibleAnnotations as well as RuntimeVisibleAnnotations") \ | |
1204 \ | |
1205 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \ | |
1206 "Number of OutOfMemoryErrors preallocated with backtrace") \ | |
1207 \ | |
1208 product(bool, LazyBootClassLoader, true, \ | |
1209 "Enable/disable lazy opening of boot class path entries") \ | |
1210 \ | |
1211 diagnostic(bool, UseIncDec, true, \ | |
1212 "Use INC, DEC instructions on x86") \ | |
1213 \ | |
219 | 1214 product(bool, UseNewLongLShift, false, \ |
1215 "Use optimized bitwise shift left") \ | |
1216 \ | |
0 | 1217 product(bool, UseStoreImmI16, true, \ |
1218 "Use store immediate 16-bits value instruction on x86") \ | |
1219 \ | |
1220 product(bool, UseAddressNop, false, \ | |
1221 "Use '0F 1F [addr]' NOP instructions on x86 cpus") \ | |
1222 \ | |
1223 product(bool, UseXmmLoadAndClearUpper, true, \ | |
1224 "Load low part of XMM register and clear upper part") \ | |
1225 \ | |
1226 product(bool, UseXmmRegToRegMoveAll, false, \ | |
1227 "Copy all XMM register bits when moving value between registers") \ | |
1228 \ | |
71 | 1229 product(bool, UseXmmI2D, false, \ |
1230 "Use SSE2 CVTDQ2PD instruction to convert Integer to Double") \ | |
1231 \ | |
1232 product(bool, UseXmmI2F, false, \ | |
1233 "Use SSE2 CVTDQ2PS instruction to convert Integer to Float") \ | |
1234 \ | |
405 | 1235 product(bool, UseXMMForArrayCopy, false, \ |
1236 "Use SSE2 MOVQ instruction for Arraycopy") \ | |
1237 \ | |
1238 product(bool, UseUnalignedLoadStores, false, \ | |
1239 "Use SSE2 MOVDQU instruction for Arraycopy") \ | |
1240 \ | |
3839 | 1241 product(bool, UseCBCond, false, \ |
1242 "Use compare and branch instruction on SPARC") \ | |
1243 \ | |
0 | 1244 product(intx, FieldsAllocationStyle, 1, \ |
1366
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1245 "0 - type based with oops first, 1 - with oops last, " \ |
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1246 "2 - oops in super and sub classes are together") \ |
0 | 1247 \ |
1248 product(bool, CompactFields, true, \ | |
1249 "Allocate nonstatic fields in gaps between previous fields") \ | |
1250 \ | |
1251 notproduct(bool, PrintCompactFieldsSavings, false, \ | |
1252 "Print how many words were saved with CompactFields") \ | |
1253 \ | |
1254 product(bool, UseBiasedLocking, true, \ | |
1255 "Enable biased locking in JVM") \ | |
1256 \ | |
1257 product(intx, BiasedLockingStartupDelay, 4000, \ | |
1258 "Number of milliseconds to wait before enabling biased locking") \ | |
1259 \ | |
1260 diagnostic(bool, PrintBiasedLockingStatistics, false, \ | |
1261 "Print statistics of biased locking in JVM") \ | |
1262 \ | |
1263 product(intx, BiasedLockingBulkRebiasThreshold, 20, \ | |
1264 "Threshold of number of revocations per type to try to " \ | |
1265 "rebias all objects in the heap of that type") \ | |
1266 \ | |
1267 product(intx, BiasedLockingBulkRevokeThreshold, 40, \ | |
1268 "Threshold of number of revocations per type to permanently " \ | |
1269 "revoke biases of all objects in the heap of that type") \ | |
1270 \ | |
1271 product(intx, BiasedLockingDecayTime, 25000, \ | |
1272 "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \ | |
1273 "type after previous bulk rebias") \ | |
1274 \ | |
2376
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1275 develop(bool, JavaObjectsInPerm, false, \ |
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1276 "controls whether Classes and interned Strings are allocated" \ |
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|
1277 "in perm. This purely intended to allow debugging issues" \ |
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|
1278 "in production.") \ |
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|
1279 \ |
0 | 1280 /* tracing */ \ |
1281 \ | |
1282 notproduct(bool, TraceRuntimeCalls, false, \ | |
1283 "Trace run-time calls") \ | |
1284 \ | |
1285 develop(bool, TraceJNICalls, false, \ | |
1286 "Trace JNI calls") \ | |
1287 \ | |
1288 notproduct(bool, TraceJVMCalls, false, \ | |
1289 "Trace JVM calls") \ | |
1290 \ | |
370
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1291 product(ccstr, TraceJVMTI, NULL, \ |
0 | 1292 "Trace flags for JVMTI functions and events") \ |
1293 \ | |
1294 /* This option can change an EMCP method into an obsolete method. */ \ | |
1295 /* This can affect tests that except specific methods to be EMCP. */ \ | |
1296 /* This option should be used with caution. */ \ | |
1297 product(bool, StressLdcRewrite, false, \ | |
1298 "Force ldc -> ldc_w rewrite during RedefineClasses") \ | |
1299 \ | |
1300 product(intx, TraceRedefineClasses, 0, \ | |
1301 "Trace level for JVMTI RedefineClasses") \ | |
1302 \ | |
1574 | 1303 develop(bool, StressMethodComparator, false, \ |
1304 "run the MethodComparator on all loaded methods") \ | |
1305 \ | |
0 | 1306 /* change to false by default sometime after Mustang */ \ |
1307 product(bool, VerifyMergedCPBytecodes, true, \ | |
1308 "Verify bytecodes after RedefineClasses constant pool merging") \ | |
1309 \ | |
1310 develop(bool, TraceJNIHandleAllocation, false, \ | |
1311 "Trace allocation/deallocation of JNI handle blocks") \ | |
1312 \ | |
1313 develop(bool, TraceThreadEvents, false, \ | |
1314 "Trace all thread events") \ | |
1315 \ | |
1316 develop(bool, TraceBytecodes, false, \ | |
1317 "Trace bytecode execution") \ | |
1318 \ | |
1319 develop(bool, TraceClassInitialization, false, \ | |
1320 "Trace class initialization") \ | |
1321 \ | |
1322 develop(bool, TraceExceptions, false, \ | |
1323 "Trace exceptions") \ | |
1324 \ | |
1325 develop(bool, TraceICs, false, \ | |
1326 "Trace inline cache changes") \ | |
1327 \ | |
1328 notproduct(bool, TraceInvocationCounterOverflow, false, \ | |
1329 "Trace method invocation counter overflow") \ | |
1330 \ | |
1331 develop(bool, TraceInlineCacheClearing, false, \ | |
1332 "Trace clearing of inline caches in nmethods") \ | |
1333 \ | |
1334 develop(bool, TraceDependencies, false, \ | |
1335 "Trace dependencies") \ | |
1336 \ | |
1337 develop(bool, VerifyDependencies, trueInDebug, \ | |
1338 "Exercise and verify the compilation dependency mechanism") \ | |
1339 \ | |
1340 develop(bool, TraceNewOopMapGeneration, false, \ | |
1341 "Trace OopMapGeneration") \ | |
1342 \ | |
1343 develop(bool, TraceNewOopMapGenerationDetailed, false, \ | |
1344 "Trace OopMapGeneration: print detailed cell states") \ | |
1345 \ | |
1346 develop(bool, TimeOopMap, false, \ | |
1347 "Time calls to GenerateOopMap::compute_map() in sum") \ | |
1348 \ | |
1349 develop(bool, TimeOopMap2, false, \ | |
1350 "Time calls to GenerateOopMap::compute_map() individually") \ | |
1351 \ | |
1352 develop(bool, TraceMonitorMismatch, false, \ | |
1353 "Trace monitor matching failures during OopMapGeneration") \ | |
1354 \ | |
1355 develop(bool, TraceOopMapRewrites, false, \ | |
1356 "Trace rewritting of method oops during oop map generation") \ | |
1357 \ | |
1358 develop(bool, TraceSafepoint, false, \ | |
1359 "Trace safepoint operations") \ | |
1360 \ | |
1361 develop(bool, TraceICBuffer, false, \ | |
1362 "Trace usage of IC buffer") \ | |
1363 \ | |
1364 develop(bool, TraceCompiledIC, false, \ | |
1365 "Trace changes of compiled IC") \ | |
1366 \ | |
1367 notproduct(bool, TraceZapDeadLocals, false, \ | |
1368 "Trace zapping dead locals") \ | |
1369 \ | |
1370 develop(bool, TraceStartupTime, false, \ | |
1371 "Trace setup time") \ | |
1372 \ | |
1373 product(ccstr, HPILibPath, NULL, \ | |
1374 "Specify alternate path to HPI library") \ | |
1375 \ | |
1376 develop(bool, TraceProtectionDomainVerification, false, \ | |
1377 "Trace protection domain verifcation") \ | |
1378 \ | |
1379 develop(bool, TraceClearedExceptions, false, \ | |
1380 "Prints when an exception is forcibly cleared") \ | |
1381 \ | |
1382 product(bool, TraceClassResolution, false, \ | |
1383 "Trace all constant pool resolutions (for debugging)") \ | |
1384 \ | |
1385 product(bool, TraceBiasedLocking, false, \ | |
1386 "Trace biased locking in JVM") \ | |
1387 \ | |
1388 product(bool, TraceMonitorInflation, false, \ | |
1389 "Trace monitor inflation in JVM") \ | |
1390 \ | |
1391 /* assembler */ \ | |
1392 product(bool, Use486InstrsOnly, false, \ | |
1393 "Use 80486 Compliant instruction subset") \ | |
1394 \ | |
1395 /* gc */ \ | |
1396 \ | |
1397 product(bool, UseSerialGC, false, \ | |
342
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1398 "Use the serial garbage collector") \ |
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1399 \ |
1193
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1400 product(bool, UseG1GC, false, \ |
342
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1401 "Use the Garbage-First garbage collector") \ |
0 | 1402 \ |
1403 product(bool, UseParallelGC, false, \ | |
1404 "Use the Parallel Scavenge garbage collector") \ | |
1405 \ | |
1406 product(bool, UseParallelOldGC, false, \ | |
1407 "Use the Parallel Old garbage collector") \ | |
1408 \ | |
1409 product(uintx, HeapMaximumCompactionInterval, 20, \ | |
1410 "How often should we maximally compact the heap (not allowing " \ | |
1411 "any dead space)") \ | |
1412 \ | |
1413 product(uintx, HeapFirstMaximumCompactionCount, 3, \ | |
1414 "The collection count for the first maximum compaction") \ | |
1415 \ | |
1416 product(bool, UseMaximumCompactionOnSystemGC, true, \ | |
1417 "In the Parallel Old garbage collector maximum compaction for " \ | |
1418 "a system GC") \ | |
1419 \ | |
1420 product(uintx, ParallelOldDeadWoodLimiterMean, 50, \ | |
1421 "The mean used by the par compact dead wood" \ | |
1422 "limiter (a number between 0-100).") \ | |
1423 \ | |
1424 product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \ | |
1425 "The standard deviation used by the par compact dead wood" \ | |
1426 "limiter (a number between 0-100).") \ | |
1427 \ | |
1428 product(uintx, ParallelGCThreads, 0, \ | |
1429 "Number of parallel threads parallel gc will use") \ | |
1430 \ | |
4095
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1431 product(bool, UseDynamicNumberOfGCThreads, false, \ |
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1432 "Dynamically choose the number of parallel threads " \ |
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1433 "parallel gc will use") \ |
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1434 \ |
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1435 diagnostic(bool, ForceDynamicNumberOfGCThreads, false, \ |
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1436 "Force dynamic selection of the number of" \ |
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1437 "parallel threads parallel gc will use to aid debugging") \ |
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1438 \ |
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1439 product(uintx, HeapSizePerGCThread, ScaleForWordSize(64*M), \ |
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1440 "Size of heap (bytes) per GC thread used in calculating the " \ |
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1441 "number of GC threads") \ |
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1442 \ |
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1443 product(bool, TraceDynamicGCThreads, false, \ |
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1444 "Trace the dynamic GC thread usage") \ |
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1445 \ |
483
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1446 develop(bool, ParallelOldGCSplitALot, false, \ |
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|
1447 "Provoke splitting (copying data from a young gen space to" \ |
0f773163217d
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diff
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|
1448 "multiple destination spaces)") \ |
0f773163217d
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|
1449 \ |
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|
1450 develop(uintx, ParallelOldGCSplitInterval, 3, \ |
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|
1451 "How often to provoke splitting a young gen space") \ |
0 | 1452 \ |
375
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1453 develop(bool, TraceRegionTasksQueuing, false, \ |
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|
1454 "Trace the queuing of the region tasks") \ |
0 | 1455 \ |
1284 | 1456 product(uintx, ConcGCThreads, 0, \ |
1457 "Number of threads concurrent gc will use") \ | |
342
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1458 \ |
0 | 1459 product(uintx, YoungPLABSize, 4096, \ |
1460 "Size of young gen promotion labs (in HeapWords)") \ | |
1461 \ | |
1462 product(uintx, OldPLABSize, 1024, \ | |
1463 "Size of old gen promotion labs (in HeapWords)") \ | |
1464 \ | |
1465 product(uintx, GCTaskTimeStampEntries, 200, \ | |
1466 "Number of time stamp entries per gc worker thread") \ | |
1467 \ | |
1468 product(bool, AlwaysTenure, false, \ | |
1469 "Always tenure objects in eden. (ParallelGC only)") \ | |
1470 \ | |
1471 product(bool, NeverTenure, false, \ | |
1064 | 1472 "Never tenure objects in eden, May tenure on overflow " \ |
1473 "(ParallelGC only)") \ | |
0 | 1474 \ |
1475 product(bool, ScavengeBeforeFullGC, true, \ | |
1064 | 1476 "Scavenge youngest generation before each full GC, " \ |
1477 "used with UseParallelGC") \ | |
0 | 1478 \ |
1479 develop(bool, ScavengeWithObjectsInToSpace, false, \ | |
1480 "Allow scavenges to occur when to_space contains objects.") \ | |
1481 \ | |
1482 product(bool, UseConcMarkSweepGC, false, \ | |
1483 "Use Concurrent Mark-Sweep GC in the old generation") \ | |
1484 \ | |
1485 product(bool, ExplicitGCInvokesConcurrent, false, \ | |
1486 "A System.gc() request invokes a concurrent collection;" \ | |
1487 " (effective only when UseConcMarkSweepGC)") \ | |
1488 \ | |
1489 product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \ | |
1064 | 1490 "A System.gc() request invokes a concurrent collection and " \ |
1491 "also unloads classes during such a concurrent gc cycle " \ | |
1492 "(effective only when UseConcMarkSweepGC)") \ | |
0 | 1493 \ |
1520
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diff
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|
1494 product(bool, GCLockerInvokesConcurrent, false, \ |
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diff
changeset
|
1495 "The exit of a JNI CS necessitating a scavenge also" \ |
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ysr
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1518
diff
changeset
|
1496 " kicks off a bkgrd concurrent collection") \ |
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1518
diff
changeset
|
1497 \ |
1991
016a3628c885
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
tonyp
parents:
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diff
changeset
|
1498 product(uintx, GCLockerEdenExpansionPercent, 5, \ |
016a3628c885
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diff
changeset
|
1499 "How much the GC can expand the eden by while the GC locker " \ |
016a3628c885
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diff
changeset
|
1500 "is active (as a percentage)") \ |
016a3628c885
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tonyp
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diff
changeset
|
1501 \ |
0 | 1502 develop(bool, UseCMSAdaptiveFreeLists, true, \ |
1503 "Use Adaptive Free Lists in the CMS generation") \ | |
1504 \ | |
1505 develop(bool, UseAsyncConcMarkSweepGC, true, \ | |
1506 "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\ | |
1507 \ | |
1508 develop(bool, RotateCMSCollectionTypes, false, \ | |
1509 "Rotate the CMS collections among concurrent and STW") \ | |
1510 \ | |
1511 product(bool, UseCMSBestFit, true, \ | |
1512 "Use CMS best fit allocation strategy") \ | |
1513 \ | |
1514 product(bool, UseCMSCollectionPassing, true, \ | |
1515 "Use passing of collection from background to foreground") \ | |
1516 \ | |
1517 product(bool, UseParNewGC, false, \ | |
1518 "Use parallel threads in the new generation.") \ | |
1519 \ | |
1520 product(bool, ParallelGCVerbose, false, \ | |
1521 "Verbose output for parallel GC.") \ | |
1522 \ | |
1523 product(intx, ParallelGCBufferWastePct, 10, \ | |
1524 "wasted fraction of parallel allocation buffer.") \ | |
1525 \ | |
3357
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|
1526 diagnostic(bool, ParallelGCRetainPLAB, false, \ |
fc2b798ab316
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changeset
|
1527 "Retain parallel allocation buffers across scavenges; " \ |
fc2b798ab316
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changeset
|
1528 " -- disabled because this currently conflicts with " \ |
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
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|
1529 " parallel card scanning under certain conditions ") \ |
0 | 1530 \ |
1531 product(intx, TargetPLABWastePct, 10, \ | |
1532 "target wasted space in last buffer as pct of overall allocation")\ | |
1533 \ | |
1534 product(uintx, PLABWeight, 75, \ | |
1535 "Percentage (0-100) used to weight the current sample when" \ | |
1536 "computing exponentially decaying average for ResizePLAB.") \ | |
1537 \ | |
1538 product(bool, ResizePLAB, true, \ | |
1539 "Dynamically resize (survivor space) promotion labs") \ | |
1540 \ | |
1541 product(bool, PrintPLAB, false, \ | |
1542 "Print (survivor space) promotion labs sizing decisions") \ | |
1543 \ | |
1544 product(intx, ParGCArrayScanChunk, 50, \ | |
1545 "Scan a subset and push remainder, if array is bigger than this") \ | |
1546 \ | |
695 | 1547 product(bool, ParGCUseLocalOverflow, false, \ |
1548 "Instead of a global overflow list, use local overflow stacks") \ | |
1549 \ | |
679
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|
1550 product(bool, ParGCTrimOverflow, true, \ |
695 | 1551 "Eagerly trim the local overflow lists (when ParGCUseLocalOverflow") \ |
679
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|
1552 \ |
534 | 1553 notproduct(bool, ParGCWorkQueueOverflowALot, false, \ |
1554 "Whether we should simulate work queue overflow in ParNew") \ | |
1555 \ | |
1556 notproduct(uintx, ParGCWorkQueueOverflowInterval, 1000, \ | |
1064 | 1557 "An `interval' counter that determines how frequently " \ |
1558 "we simulate overflow; a smaller number increases frequency") \ | |
534 | 1559 \ |
1560 product(uintx, ParGCDesiredObjsFromOverflowList, 20, \ | |
0 | 1561 "The desired number of objects to claim from the overflow list") \ |
1562 \ | |
4728
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1563 diagnostic(uintx, ParGCStridesPerThread, 2, \ |
3357
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changeset
|
1564 "The number of strides per worker thread that we divide up the " \ |
fc2b798ab316
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|
1565 "card table scanning work into") \ |
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|
1566 \ |
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|
1567 diagnostic(intx, ParGCCardsPerStrideChunk, 256, \ |
fc2b798ab316
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changeset
|
1568 "The number of cards in each chunk of the parallel chunks used " \ |
fc2b798ab316
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changeset
|
1569 "during card table scanning") \ |
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|
1570 \ |
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|
1571 product(uintx, CMSParPromoteBlocksToClaim, 16, \ |
0 | 1572 "Number of blocks to attempt to claim when refilling CMS LAB for "\ |
1573 "parallel GC.") \ | |
1574 \ | |
1145
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1575 product(uintx, OldPLABWeight, 50, \ |
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1576 "Percentage (0-100) used to weight the current sample when" \ |
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1577 "computing exponentially decaying average for resizing CMSParPromoteBlocksToClaim.") \ |
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|
1578 \ |
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|
1579 product(bool, ResizeOldPLAB, true, \ |
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|
1580 "Dynamically resize (old gen) promotion labs") \ |
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1581 \ |
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1582 product(bool, PrintOldPLAB, false, \ |
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|
1583 "Print (old gen) promotion labs sizing decisions") \ |
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|
1584 \ |
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|
1585 product(uintx, CMSOldPLABMin, 16, \ |
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|
1586 "Min size of CMS gen promotion lab caches per worker per blksize")\ |
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1587 \ |
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1588 product(uintx, CMSOldPLABMax, 1024, \ |
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|
1589 "Max size of CMS gen promotion lab caches per worker per blksize")\ |
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|
1590 \ |
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|
1591 product(uintx, CMSOldPLABNumRefills, 4, \ |
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|
1592 "Nominal number of refills of CMS gen promotion lab cache" \ |
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changeset
|
1593 " per worker per block size") \ |
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changeset
|
1594 \ |
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|
1595 product(bool, CMSOldPLABResizeQuicker, false, \ |
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changeset
|
1596 "Whether to react on-the-fly during a scavenge to a sudden" \ |
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changeset
|
1597 " change in block demand rate") \ |
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changeset
|
1598 \ |
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|
1599 product(uintx, CMSOldPLABToleranceFactor, 4, \ |
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|
1600 "The tolerance of the phase-change detector for on-the-fly" \ |
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changeset
|
1601 " PLAB resizing during a scavenge") \ |
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changeset
|
1602 \ |
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|
1603 product(uintx, CMSOldPLABReactivityFactor, 2, \ |
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|
1604 "The gain in the feedback loop for on-the-fly PLAB resizing" \ |
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|
1605 " during a scavenge") \ |
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|
1606 \ |
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1607 product(uintx, CMSOldPLABReactivityCeiling, 10, \ |
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1608 "The clamping of the gain in the feedback loop for on-the-fly" \ |
e018e6884bd8
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|
1609 " PLAB resizing during a scavenge") \ |
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|
1610 \ |
0 | 1611 product(bool, AlwaysPreTouch, false, \ |
1612 "It forces all freshly committed pages to be pre-touched.") \ | |
1613 \ | |
2368
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1614 product_pd(intx, CMSYoungGenPerWorker, \ |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
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1615 "The maximum size of young gen chosen by default per GC worker " \ |
1064 | 1616 "thread available") \ |
0 | 1617 \ |
342
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1618 product(bool, GCOverheadReporting, false, \ |
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diff
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|
1619 "Enables the GC overhead reporting facility") \ |
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|
1620 \ |
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|
1621 product(intx, GCOverheadReportingPeriodMS, 100, \ |
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|
1622 "Reporting period for conc GC overhead reporting, in ms ") \ |
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|
1623 \ |
0 | 1624 product(bool, CMSIncrementalMode, false, \ |
1625 "Whether CMS GC should operate in \"incremental\" mode") \ | |
1626 \ | |
1627 product(uintx, CMSIncrementalDutyCycle, 10, \ | |
1628 "CMS incremental mode duty cycle (a percentage, 0-100). If" \ | |
1629 "CMSIncrementalPacing is enabled, then this is just the initial" \ | |
1630 "value") \ | |
1631 \ | |
1632 product(bool, CMSIncrementalPacing, true, \ | |
1633 "Whether the CMS incremental mode duty cycle should be " \ | |
1634 "automatically adjusted") \ | |
1635 \ | |
1636 product(uintx, CMSIncrementalDutyCycleMin, 0, \ | |
1064 | 1637 "Lower bound on the duty cycle when CMSIncrementalPacing is " \ |
1638 "enabled (a percentage, 0-100)") \ | |
0 | 1639 \ |
1640 product(uintx, CMSIncrementalSafetyFactor, 10, \ | |
1064 | 1641 "Percentage (0-100) used to add conservatism when computing the " \ |
1642 "duty cycle") \ | |
0 | 1643 \ |
1644 product(uintx, CMSIncrementalOffset, 0, \ | |
1645 "Percentage (0-100) by which the CMS incremental mode duty cycle" \ | |
1064 | 1646 " is shifted to the right within the period between young GCs") \ |
0 | 1647 \ |
1145
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1648 product(uintx, CMSExpAvgFactor, 50, \ |
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|
1649 "Percentage (0-100) used to weight the current sample when" \ |
e018e6884bd8
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changeset
|
1650 "computing exponential averages for CMS statistics.") \ |
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|
1651 \ |
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|
1652 product(uintx, CMS_FLSWeight, 75, \ |
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changeset
|
1653 "Percentage (0-100) used to weight the current sample when" \ |
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|
1654 "computing exponentially decating averages for CMS FLS statistics.") \ |
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|
1655 \ |
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|
1656 product(uintx, CMS_FLSPadding, 1, \ |
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|
1657 "The multiple of deviation from mean to use for buffering" \ |
0 | 1658 "against volatility in free list demand.") \ |
1659 \ | |
1660 product(uintx, FLSCoalescePolicy, 2, \ | |
1661 "CMS: Aggression level for coalescing, increasing from 0 to 4") \ | |
1662 \ | |
1145
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|
1663 product(bool, FLSAlwaysCoalesceLarge, false, \ |
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|
1664 "CMS: Larger free blocks are always available for coalescing") \ |
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|
1665 \ |
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1666 product(double, FLSLargestBlockCoalesceProximity, 0.99, \ |
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|
1667 "CMS: the smaller the percentage the greater the coalition force")\ |
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|
1668 \ |
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1669 product(double, CMSSmallCoalSurplusPercent, 1.05, \ |
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|
1670 "CMS: the factor by which to inflate estimated demand of small" \ |
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|
1671 " block sizes to prevent coalescing with an adjoining block") \ |
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|
1672 \ |
e018e6884bd8
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|
1673 product(double, CMSLargeCoalSurplusPercent, 0.95, \ |
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|
1674 "CMS: the factor by which to inflate estimated demand of large" \ |
e018e6884bd8
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changeset
|
1675 " block sizes to prevent coalescing with an adjoining block") \ |
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|
1676 \ |
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|
1677 product(double, CMSSmallSplitSurplusPercent, 1.10, \ |
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changeset
|
1678 "CMS: the factor by which to inflate estimated demand of small" \ |
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changeset
|
1679 " block sizes to prevent splitting to supply demand for smaller" \ |
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changeset
|
1680 " blocks") \ |
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|
1681 \ |
e018e6884bd8
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|
1682 product(double, CMSLargeSplitSurplusPercent, 1.00, \ |
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changeset
|
1683 "CMS: the factor by which to inflate estimated demand of large" \ |
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changeset
|
1684 " block sizes to prevent splitting to supply demand for smaller" \ |
e018e6884bd8
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changeset
|
1685 " blocks") \ |
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1686 \ |
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1687 product(bool, CMSExtrapolateSweep, false, \ |
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1688 "CMS: cushion for block demand during sweep") \ |
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1689 \ |
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1690 product(uintx, CMS_SweepWeight, 75, \ |
1064 | 1691 "Percentage (0-100) used to weight the current sample when " \ |
1692 "computing exponentially decaying average for inter-sweep " \ | |
1693 "duration") \ | |
0 | 1694 \ |
1145
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1695 product(uintx, CMS_SweepPadding, 1, \ |
1064 | 1696 "The multiple of deviation from mean to use for buffering " \ |
0 | 1697 "against volatility in inter-sweep duration.") \ |
1698 \ | |
1699 product(uintx, CMS_SweepTimerThresholdMillis, 10, \ | |
1700 "Skip block flux-rate sampling for an epoch unless inter-sweep " \ | |
1064 | 1701 "duration exceeds this threhold in milliseconds") \ |
0 | 1702 \ |
1703 develop(bool, CMSTraceIncrementalMode, false, \ | |
1704 "Trace CMS incremental mode") \ | |
1705 \ | |
1706 develop(bool, CMSTraceIncrementalPacing, false, \ | |
1707 "Trace CMS incremental mode pacing computation") \ | |
1708 \ | |
1709 develop(bool, CMSTraceThreadState, false, \ | |
1710 "Trace the CMS thread state (enable the trace_state() method)") \ | |
1711 \ | |
1712 product(bool, CMSClassUnloadingEnabled, false, \ | |
1713 "Whether class unloading enabled when using CMS GC") \ | |
1714 \ | |
94
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1715 product(uintx, CMSClassUnloadingMaxInterval, 0, \ |
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1716 "When CMS class unloading is enabled, the maximum CMS cycle count"\ |
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1717 " for which classes may not be unloaded") \ |
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1718 \ |
0 | 1719 product(bool, CMSCompactWhenClearAllSoftRefs, true, \ |
1720 "Compact when asked to collect CMS gen with clear_all_soft_refs") \ | |
1721 \ | |
1722 product(bool, UseCMSCompactAtFullCollection, true, \ | |
1723 "Use mark sweep compact at full collections") \ | |
1724 \ | |
1725 product(uintx, CMSFullGCsBeforeCompaction, 0, \ | |
1726 "Number of CMS full collection done before compaction if > 0") \ | |
1727 \ | |
1728 develop(intx, CMSDictionaryChoice, 0, \ | |
1729 "Use BinaryTreeDictionary as default in the CMS generation") \ | |
1730 \ | |
1731 product(uintx, CMSIndexedFreeListReplenish, 4, \ | |
1777
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1732 "Replenish an indexed free list with this number of chunks") \ |
0 | 1733 \ |
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1734 product(bool, CMSReplenishIntermediate, true, \ |
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1735 "Replenish all intermediate free-list caches") \ |
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1736 \ |
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1737 product(bool, CMSSplitIndexedFreeListBlocks, true, \ |
1777
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1738 "When satisfying batched demand, split blocks from the " \ |
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1739 "IndexedFreeList whose size is a multiple of requested size") \ |
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1740 \ |
0 | 1741 product(bool, CMSLoopWarn, false, \ |
1742 "Warn in case of excessive CMS looping") \ | |
1743 \ | |
1744 develop(bool, CMSOverflowEarlyRestoration, false, \ | |
1745 "Whether preserved marks should be restored early") \ | |
1746 \ | |
1284 | 1747 product(uintx, MarkStackSize, NOT_LP64(32*K) LP64_ONLY(4*M), \ |
1748 "Size of marking stack") \ | |
1749 \ | |
1750 product(uintx, MarkStackSizeMax, NOT_LP64(4*M) LP64_ONLY(512*M), \ | |
1751 "Max size of marking stack") \ | |
0 | 1752 \ |
1753 notproduct(bool, CMSMarkStackOverflowALot, false, \ | |
1754 "Whether we should simulate frequent marking stack / work queue" \ | |
1755 " overflow") \ | |
1756 \ | |
534 | 1757 notproduct(uintx, CMSMarkStackOverflowInterval, 1000, \ |
1758 "An `interval' counter that determines how frequently" \ | |
0 | 1759 " we simulate overflow; a smaller number increases frequency") \ |
1760 \ | |
1761 product(uintx, CMSMaxAbortablePrecleanLoops, 0, \ | |
1762 "(Temporary, subject to experimentation)" \ | |
1763 "Maximum number of abortable preclean iterations, if > 0") \ | |
1764 \ | |
1765 product(intx, CMSMaxAbortablePrecleanTime, 5000, \ | |
1766 "(Temporary, subject to experimentation)" \ | |
1767 "Maximum time in abortable preclean in ms") \ | |
1768 \ | |
1769 product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \ | |
1770 "(Temporary, subject to experimentation)" \ | |
1771 "Nominal minimum work per abortable preclean iteration") \ | |
1772 \ | |
1887
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1773 manageable(intx, CMSAbortablePrecleanWaitMillis, 100, \ |
0 | 1774 "(Temporary, subject to experimentation)" \ |
1775 " Time that we sleep between iterations when not given" \ | |
1776 " enough work per iteration") \ | |
1777 \ | |
1778 product(uintx, CMSRescanMultiple, 32, \ | |
1779 "Size (in cards) of CMS parallel rescan task") \ | |
1780 \ | |
1781 product(uintx, CMSConcMarkMultiple, 32, \ | |
1782 "Size (in cards) of CMS concurrent MT marking task") \ | |
1783 \ | |
1784 product(uintx, CMSRevisitStackSize, 1*M, \ | |
1785 "Size of CMS KlassKlass revisit stack") \ | |
1786 \ | |
1787 product(bool, CMSAbortSemantics, false, \ | |
1788 "Whether abort-on-overflow semantics is implemented") \ | |
1789 \ | |
1790 product(bool, CMSParallelRemarkEnabled, true, \ | |
1791 "Whether parallel remark enabled (only if ParNewGC)") \ | |
1792 \ | |
1793 product(bool, CMSParallelSurvivorRemarkEnabled, true, \ | |
1794 "Whether parallel remark of survivor space" \ | |
1795 " enabled (effective only if CMSParallelRemarkEnabled)") \ | |
1796 \ | |
1797 product(bool, CMSPLABRecordAlways, true, \ | |
1798 "Whether to always record survivor space PLAB bdries" \ | |
1799 " (effective only if CMSParallelSurvivorRemarkEnabled)") \ | |
1800 \ | |
1801 product(bool, CMSConcurrentMTEnabled, true, \ | |
1802 "Whether multi-threaded concurrent work enabled (if ParNewGC)") \ | |
1803 \ | |
1804 product(bool, CMSPermGenPrecleaningEnabled, true, \ | |
1805 "Whether concurrent precleaning enabled in perm gen" \ | |
1806 " (effective only when CMSPrecleaningEnabled is true)") \ | |
1807 \ | |
1808 product(bool, CMSPrecleaningEnabled, true, \ | |
1809 "Whether concurrent precleaning enabled") \ | |
1810 \ | |
1811 product(uintx, CMSPrecleanIter, 3, \ | |
1812 "Maximum number of precleaning iteration passes") \ | |
1813 \ | |
1814 product(uintx, CMSPrecleanNumerator, 2, \ | |
1815 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ | |
1816 " ratio") \ | |
1817 \ | |
1818 product(uintx, CMSPrecleanDenominator, 3, \ | |
1819 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ | |
1820 " ratio") \ | |
1821 \ | |
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1822 product(bool, CMSPrecleanRefLists1, true, \ |
0 | 1823 "Preclean ref lists during (initial) preclean phase") \ |
1824 \ | |
1825 product(bool, CMSPrecleanRefLists2, false, \ | |
1826 "Preclean ref lists during abortable preclean phase") \ | |
1827 \ | |
1828 product(bool, CMSPrecleanSurvivors1, false, \ | |
1829 "Preclean survivors during (initial) preclean phase") \ | |
1830 \ | |
1831 product(bool, CMSPrecleanSurvivors2, true, \ | |
1832 "Preclean survivors during abortable preclean phase") \ | |
1833 \ | |
1834 product(uintx, CMSPrecleanThreshold, 1000, \ | |
1835 "Don't re-iterate if #dirty cards less than this") \ | |
1836 \ | |
1837 product(bool, CMSCleanOnEnter, true, \ | |
1838 "Clean-on-enter optimization for reducing number of dirty cards") \ | |
1839 \ | |
1840 product(uintx, CMSRemarkVerifyVariant, 1, \ | |
1841 "Choose variant (1,2) of verification following remark") \ | |
1842 \ | |
1843 product(uintx, CMSScheduleRemarkEdenSizeThreshold, 2*M, \ | |
1844 "If Eden used is below this value, don't try to schedule remark") \ | |
1845 \ | |
1846 product(uintx, CMSScheduleRemarkEdenPenetration, 50, \ | |
1847 "The Eden occupancy % at which to try and schedule remark pause") \ | |
1848 \ | |
1849 product(uintx, CMSScheduleRemarkSamplingRatio, 5, \ | |
1850 "Start sampling Eden top at least before yg occupancy reaches" \ | |
1851 " 1/<ratio> of the size at which we plan to schedule remark") \ | |
1852 \ | |
1853 product(uintx, CMSSamplingGrain, 16*K, \ | |
1854 "The minimum distance between eden samples for CMS (see above)") \ | |
1855 \ | |
1856 product(bool, CMSScavengeBeforeRemark, false, \ | |
1857 "Attempt scavenge before the CMS remark step") \ | |
1858 \ | |
1859 develop(bool, CMSTraceSweeper, false, \ | |
1860 "Trace some actions of the CMS sweeper") \ | |
1861 \ | |
1862 product(uintx, CMSWorkQueueDrainThreshold, 10, \ | |
1863 "Don't drain below this size per parallel worker/thief") \ | |
1864 \ | |
1887
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1865 manageable(intx, CMSWaitDuration, 2000, \ |
0 | 1866 "Time in milliseconds that CMS thread waits for young GC") \ |
1867 \ | |
1868 product(bool, CMSYield, true, \ | |
1869 "Yield between steps of concurrent mark & sweep") \ | |
1870 \ | |
1871 product(uintx, CMSBitMapYieldQuantum, 10*M, \ | |
1872 "Bitmap operations should process at most this many bits" \ | |
1873 "between yields") \ | |
1874 \ | |
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1875 product(bool, CMSDumpAtPromotionFailure, false, \ |
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1876 "Dump useful information about the state of the CMS old " \ |
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1877 " generation upon a promotion failure.") \ |
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1878 \ |
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1879 product(bool, CMSPrintChunksInDump, false, \ |
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1880 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ |
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1881 " more detailed information about the free chunks.") \ |
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1882 \ |
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1883 product(bool, CMSPrintObjectsInDump, false, \ |
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1884 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ |
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1885 " more detailed information about the allocated objects.") \ |
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1886 \ |
0 | 1887 diagnostic(bool, FLSVerifyAllHeapReferences, false, \ |
1888 "Verify that all refs across the FLS boundary " \ | |
1889 " are to valid objects") \ | |
1890 \ | |
1891 diagnostic(bool, FLSVerifyLists, false, \ | |
1892 "Do lots of (expensive) FreeListSpace verification") \ | |
1893 \ | |
1894 diagnostic(bool, FLSVerifyIndexTable, false, \ | |
1895 "Do lots of (expensive) FLS index table verification") \ | |
1896 \ | |
1897 develop(bool, FLSVerifyDictionary, false, \ | |
1898 "Do lots of (expensive) FLS dictionary verification") \ | |
1899 \ | |
1900 develop(bool, VerifyBlockOffsetArray, false, \ | |
1901 "Do (expensive!) block offset array verification") \ | |
1902 \ | |
3321
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1903 diagnostic(bool, BlockOffsetArrayUseUnallocatedBlock, false, \ |
0 | 1904 "Maintain _unallocated_block in BlockOffsetArray" \ |
1905 " (currently applicable only to CMS collector)") \ | |
1906 \ | |
1907 develop(bool, TraceCMSState, false, \ | |
1908 "Trace the state of the CMS collection") \ | |
1909 \ | |
1910 product(intx, RefDiscoveryPolicy, 0, \ | |
1911 "Whether reference-based(0) or referent-based(1)") \ | |
1912 \ | |
1913 product(bool, ParallelRefProcEnabled, false, \ | |
1914 "Enable parallel reference processing whenever possible") \ | |
1915 \ | |
1916 product(bool, ParallelRefProcBalancingEnabled, true, \ | |
1917 "Enable balancing of reference processing queues") \ | |
1918 \ | |
1919 product(intx, CMSTriggerRatio, 80, \ | |
1920 "Percentage of MinHeapFreeRatio in CMS generation that is " \ | |
1064 | 1921 "allocated before a CMS collection cycle commences") \ |
0 | 1922 \ |
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1923 product(intx, CMSTriggerPermRatio, 80, \ |
1064 | 1924 "Percentage of MinHeapFreeRatio in the CMS perm generation that " \ |
1925 "is allocated before a CMS collection cycle commences, that " \ | |
1926 "also collects the perm generation") \ | |
94
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1927 \ |
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1928 product(uintx, CMSBootstrapOccupancy, 50, \ |
0 | 1929 "Percentage CMS generation occupancy at which to " \ |
1064 | 1930 "initiate CMS collection for bootstrapping collection stats") \ |
0 | 1931 \ |
1932 product(intx, CMSInitiatingOccupancyFraction, -1, \ | |
1933 "Percentage CMS generation occupancy to start a CMS collection " \ | |
1064 | 1934 "cycle. A negative value means that CMSTriggerRatio is used") \ |
94
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1935 \ |
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1936 product(uintx, InitiatingHeapOccupancyPercent, 45, \ |
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1937 "Percentage of the (entire) heap occupancy to start a " \ |
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1938 "concurrent GC cycle. It us used by GCs that trigger a " \ |
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1939 "concurrent GC cycle based on the occupancy of the entire heap, " \ |
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1940 "not just one of the generations (e.g., G1). A value of 0 " \ |
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1941 "denotes 'do constant GC cycles'.") \ |
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1942 \ |
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1943 product(intx, CMSInitiatingPermOccupancyFraction, -1, \ |
1064 | 1944 "Percentage CMS perm generation occupancy to start a " \ |
1945 "CMScollection cycle. A negative value means that " \ | |
1946 "CMSTriggerPermRatio is used") \ | |
0 | 1947 \ |
1948 product(bool, UseCMSInitiatingOccupancyOnly, false, \ | |
1949 "Only use occupancy as a crierion for starting a CMS collection") \ | |
1950 \ | |
94
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1951 product(intx, CMSIsTooFullPercentage, 98, \ |
1064 | 1952 "An absolute ceiling above which CMS will always consider the " \ |
1953 "perm gen ripe for collection") \ | |
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1954 \ |
0 | 1955 develop(bool, CMSTestInFreeList, false, \ |
1956 "Check if the coalesced range is already in the " \ | |
1064 | 1957 "free lists as claimed") \ |
0 | 1958 \ |
1959 notproduct(bool, CMSVerifyReturnedBytes, false, \ | |
1960 "Check that all the garbage collected was returned to the " \ | |
1961 "free lists.") \ | |
1962 \ | |
1963 notproduct(bool, ScavengeALot, false, \ | |
1964 "Force scavenge at every Nth exit from the runtime system " \ | |
1965 "(N=ScavengeALotInterval)") \ | |
1966 \ | |
1967 develop(bool, FullGCALot, false, \ | |
1968 "Force full gc at every Nth exit from the runtime system " \ | |
1969 "(N=FullGCALotInterval)") \ | |
1970 \ | |
1971 notproduct(bool, GCALotAtAllSafepoints, false, \ | |
1972 "Enforce ScavengeALot/GCALot at all potential safepoints") \ | |
1973 \ | |
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1974 product(bool, PrintPromotionFailure, false, \ |
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1975 "Print additional diagnostic information following " \ |
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1976 " promotion failure") \ |
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1977 \ |
0 | 1978 notproduct(bool, PromotionFailureALot, false, \ |
1979 "Use promotion failure handling on every youngest generation " \ | |
1980 "collection") \ | |
1981 \ | |
1982 develop(uintx, PromotionFailureALotCount, 1000, \ | |
1983 "Number of promotion failures occurring at ParGCAllocBuffer" \ | |
1984 "refill attempts (ParNew) or promotion attempts " \ | |
1985 "(other young collectors) ") \ | |
1986 \ | |
1987 develop(uintx, PromotionFailureALotInterval, 5, \ | |
1988 "Total collections between promotion failures alot") \ | |
1989 \ | |
1837
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1990 experimental(intx, WorkStealingSleepMillis, 1, \ |
0 | 1991 "Sleep time when sleep is used for yields") \ |
1992 \ | |
2430 | 1993 experimental(uintx, WorkStealingYieldsBeforeSleep, 5000, \ |
0 | 1994 "Number of yields before a sleep is done during workstealing") \ |
1995 \ | |
1837
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1996 experimental(uintx, WorkStealingHardSpins, 4096, \ |
546
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1997 "Number of iterations in a spin loop between checks on " \ |
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1998 "time out of hard spin") \ |
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1999 \ |
1837
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2000 experimental(uintx, WorkStealingSpinToYieldRatio, 10, \ |
546
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2001 "Ratio of hard spins to calls to yield") \ |
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2002 \ |
534 | 2003 product(uintx, PreserveMarkStackSize, 1024, \ |
1064 | 2004 "Size for stack used in promotion failure handling") \ |
0 | 2005 \ |
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changeset
|
2006 develop(uintx, ObjArrayMarkingStride, 512, \ |
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
1288
diff
changeset
|
2007 "Number of ObjArray elements to push onto the marking stack" \ |
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
1288
diff
changeset
|
2008 "before pushing a continuation entry") \ |
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
1288
diff
changeset
|
2009 \ |
3779 | 2010 notproduct(bool, ExecuteInternalVMTests, false, \ |
2011 "Enable execution of internal VM tests.") \ | |
2012 \ | |
0 | 2013 product_pd(bool, UseTLAB, "Use thread-local object allocation") \ |
2014 \ | |
2015 product_pd(bool, ResizeTLAB, \ | |
2016 "Dynamically resize tlab size for threads") \ | |
2017 \ | |
2018 product(bool, ZeroTLAB, false, \ | |
2019 "Zero out the newly created TLAB") \ | |
2020 \ | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
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parents:
142
diff
changeset
|
2021 product(bool, FastTLABRefill, true, \ |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
142
diff
changeset
|
2022 "Use fast TLAB refill code") \ |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
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parents:
142
diff
changeset
|
2023 \ |
0 | 2024 product(bool, PrintTLAB, false, \ |
2025 "Print various TLAB related information") \ | |
2026 \ | |
2027 product(bool, TLABStats, true, \ | |
2028 "Print various TLAB related information") \ | |
2029 \ | |
3892 | 2030 product(bool, UseBlockZeroing, false, \ |
2031 "Use special cpu instructions for block zeroing") \ | |
2032 \ | |
2033 product(intx, BlockZeroingLowLimit, 2048, \ | |
2034 "Minimum size in bytes when block zeroing will be used") \ | |
2035 \ | |
3903 | 2036 product(bool, UseBlockCopy, false, \ |
2037 "Use special cpu instructions for block copy") \ | |
2038 \ | |
2039 product(intx, BlockCopyLowLimit, 2048, \ | |
2040 "Minimum size in bytes when block copy will be used") \ | |
2041 \ | |
941 | 2042 product(bool, PrintRevisitStats, false, \ |
2043 "Print revisit (klass and MDO) stack related information") \ | |
2044 \ | |
2192
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
2045 EMBEDDED_ONLY(product(bool, LowMemoryProtection, true, \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
2046 "Enable LowMemoryProtection")) \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
2047 \ |
0 | 2048 product_pd(bool, NeverActAsServerClassMachine, \ |
2049 "Never act like a server-class machine") \ | |
2050 \ | |
2051 product(bool, AlwaysActAsServerClassMachine, false, \ | |
2052 "Always act like a server-class machine") \ | |
2053 \ | |
1064 | 2054 product_pd(uint64_t, MaxRAM, \ |
2055 "Real memory size (in bytes) used to set maximum heap size") \ | |
2056 \ | |
2057 product(uintx, ErgoHeapSizeLimit, 0, \ | |
2058 "Maximum ergonomically set heap size (in bytes); zero means use " \ | |
2059 "MaxRAM / MaxRAMFraction") \ | |
2060 \ | |
2061 product(uintx, MaxRAMFraction, 4, \ | |
2062 "Maximum fraction (1/n) of real memory used for maximum heap " \ | |
2063 "size") \ | |
0 | 2064 \ |
2065 product(uintx, DefaultMaxRAMFraction, 4, \ | |
1064 | 2066 "Maximum fraction (1/n) of real memory used for maximum heap " \ |
2067 "size; deprecated: to be renamed to MaxRAMFraction") \ | |
2068 \ | |
2069 product(uintx, MinRAMFraction, 2, \ | |
2070 "Minimum fraction (1/n) of real memory used for maxmimum heap " \ | |
2071 "size on systems with small physical memory size") \ | |
2072 \ | |
2073 product(uintx, InitialRAMFraction, 64, \ | |
2074 "Fraction (1/n) of real memory used for initial heap size") \ | |
0 | 2075 \ |
2076 product(bool, UseAutoGCSelectPolicy, false, \ | |
2077 "Use automatic collection selection policy") \ | |
2078 \ | |
2079 product(uintx, AutoGCSelectPauseMillis, 5000, \ | |
2080 "Automatic GC selection pause threshhold in ms") \ | |
2081 \ | |
2082 product(bool, UseAdaptiveSizePolicy, true, \ | |
2083 "Use adaptive generation sizing policies") \ | |
2084 \ | |
2085 product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \ | |
2086 "Use adaptive survivor sizing policies") \ | |
2087 \ | |
2088 product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \ | |
2089 "Use adaptive young-old sizing policies at minor collections") \ | |
2090 \ | |
2091 product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \ | |
2092 "Use adaptive young-old sizing policies at major collections") \ | |
2093 \ | |
2094 product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \ | |
2095 "Use statistics from System.GC for adaptive size policy") \ | |
2096 \ | |
2097 product(bool, UseAdaptiveGCBoundary, false, \ | |
2098 "Allow young-old boundary to move") \ | |
2099 \ | |
2100 develop(bool, TraceAdaptiveGCBoundary, false, \ | |
2101 "Trace young-old boundary moves") \ | |
2102 \ | |
2103 develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \ | |
2104 "Resize the virtual spaces of the young or old generations") \ | |
2105 \ | |
2106 product(uintx, AdaptiveSizeThroughPutPolicy, 0, \ | |
2107 "Policy for changeing generation size for throughput goals") \ | |
2108 \ | |
2109 product(uintx, AdaptiveSizePausePolicy, 0, \ | |
2110 "Policy for changing generation size for pause goals") \ | |
2111 \ | |
2112 develop(bool, PSAdjustTenuredGenForMinorPause, false, \ | |
2113 "Adjust tenured generation to achive a minor pause goal") \ | |
2114 \ | |
2115 develop(bool, PSAdjustYoungGenForMajorPause, false, \ | |
2116 "Adjust young generation to achive a major pause goal") \ | |
2117 \ | |
2118 product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \ | |
2119 "Number of steps where heuristics is used before data is used") \ | |
2120 \ | |
2121 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \ | |
2122 "Number of collections before the adaptive sizing is started") \ | |
2123 \ | |
2124 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \ | |
1064 | 2125 "Collecton interval for printing information; zero => never") \ |
0 | 2126 \ |
2127 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \ | |
2128 "Use adaptive minimum footprint as a goal") \ | |
2129 \ | |
2130 product(uintx, AdaptiveSizePolicyWeight, 10, \ | |
2131 "Weight given to exponential resizing, between 0 and 100") \ | |
2132 \ | |
2133 product(uintx, AdaptiveTimeWeight, 25, \ | |
2134 "Weight given to time in adaptive policy, between 0 and 100") \ | |
2135 \ | |
2136 product(uintx, PausePadding, 1, \ | |
2137 "How much buffer to keep for pause time") \ | |
2138 \ | |
2139 product(uintx, PromotedPadding, 3, \ | |
2140 "How much buffer to keep for promotion failure") \ | |
2141 \ | |
2142 product(uintx, SurvivorPadding, 3, \ | |
2143 "How much buffer to keep for survivor overflow") \ | |
2144 \ | |
2145 product(uintx, AdaptivePermSizeWeight, 20, \ | |
2146 "Weight for perm gen exponential resizing, between 0 and 100") \ | |
2147 \ | |
2148 product(uintx, PermGenPadding, 3, \ | |
2149 "How much buffer to keep for perm gen sizing") \ | |
2150 \ | |
2151 product(uintx, ThresholdTolerance, 10, \ | |
2152 "Allowed collection cost difference between generations") \ | |
2153 \ | |
2154 product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \ | |
1064 | 2155 "If collection costs are within margin, reduce both by full " \ |
2156 "delta") \ | |
0 | 2157 \ |
2158 product(uintx, YoungGenerationSizeIncrement, 20, \ | |
2159 "Adaptive size percentage change in young generation") \ | |
2160 \ | |
2161 product(uintx, YoungGenerationSizeSupplement, 80, \ | |
2162 "Supplement to YoungedGenerationSizeIncrement used at startup") \ | |
2163 \ | |
2164 product(uintx, YoungGenerationSizeSupplementDecay, 8, \ | |
2165 "Decay factor to YoungedGenerationSizeSupplement") \ | |
2166 \ | |
2167 product(uintx, TenuredGenerationSizeIncrement, 20, \ | |
2168 "Adaptive size percentage change in tenured generation") \ | |
2169 \ | |
2170 product(uintx, TenuredGenerationSizeSupplement, 80, \ | |
2171 "Supplement to TenuredGenerationSizeIncrement used at startup") \ | |
2172 \ | |
2173 product(uintx, TenuredGenerationSizeSupplementDecay, 2, \ | |
2174 "Decay factor to TenuredGenerationSizeIncrement") \ | |
2175 \ | |
1783 | 2176 product(uintx, MaxGCPauseMillis, max_uintx, \ |
751 | 2177 "Adaptive size policy maximum GC pause time goal in msec, " \ |
2178 "or (G1 Only) the max. GC time per MMU time slice") \ | |
2179 \ | |
1610
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1589
diff
changeset
|
2180 product(uintx, GCPauseIntervalMillis, 0, \ |
751 | 2181 "Time slice for MMU specification") \ |
0 | 2182 \ |
2183 product(uintx, MaxGCMinorPauseMillis, max_uintx, \ | |
2184 "Adaptive size policy maximum GC minor pause time goal in msec") \ | |
2185 \ | |
2186 product(uintx, GCTimeRatio, 99, \ | |
2187 "Adaptive size policy application time to GC time ratio") \ | |
2188 \ | |
2189 product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \ | |
2190 "Adaptive size scale down factor for shrinking") \ | |
2191 \ | |
2192 product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \ | |
2193 "Adaptive size decays the major cost for long major intervals") \ | |
2194 \ | |
2195 product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \ | |
2196 "Time scale over which major costs decay") \ | |
2197 \ | |
2198 product(uintx, MinSurvivorRatio, 3, \ | |
2199 "Minimum ratio of young generation/survivor space size") \ | |
2200 \ | |
2201 product(uintx, InitialSurvivorRatio, 8, \ | |
2202 "Initial ratio of eden/survivor space size") \ | |
2203 \ | |
2204 product(uintx, BaseFootPrintEstimate, 256*M, \ | |
2205 "Estimate of footprint other than Java Heap") \ | |
2206 \ | |
2207 product(bool, UseGCOverheadLimit, true, \ | |
2208 "Use policy to limit of proportion of time spent in GC " \ | |
2209 "before an OutOfMemory error is thrown") \ | |
2210 \ | |
2211 product(uintx, GCTimeLimit, 98, \ | |
2212 "Limit of proportion of time spent in GC before an OutOfMemory" \ | |
2213 "error is thrown (used with GCHeapFreeLimit)") \ | |
2214 \ | |
2215 product(uintx, GCHeapFreeLimit, 2, \ | |
2216 "Minimum percentage of free space after a full GC before an " \ | |
2217 "OutOfMemoryError is thrown (used with GCTimeLimit)") \ | |
2218 \ | |
2219 develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \ | |
2220 "Number of consecutive collections before gc time limit fires") \ | |
2221 \ | |
2222 product(bool, PrintAdaptiveSizePolicy, false, \ | |
2223 "Print information about AdaptiveSizePolicy") \ | |
2224 \ | |
2225 product(intx, PrefetchCopyIntervalInBytes, -1, \ | |
2226 "How far ahead to prefetch destination area (<= 0 means off)") \ | |
2227 \ | |
2228 product(intx, PrefetchScanIntervalInBytes, -1, \ | |
2229 "How far ahead to prefetch scan area (<= 0 means off)") \ | |
2230 \ | |
2231 product(intx, PrefetchFieldsAhead, -1, \ | |
2232 "How many fields ahead to prefetch in oop scan (<= 0 means off)") \ | |
2233 \ | |
2234 develop(bool, UsePrefetchQueue, true, \ | |
2235 "Use the prefetch queue during PS promotion") \ | |
2236 \ | |
2237 diagnostic(bool, VerifyBeforeExit, trueInDebug, \ | |
2238 "Verify system before exiting") \ | |
2239 \ | |
2240 diagnostic(bool, VerifyBeforeGC, false, \ | |
2241 "Verify memory system before GC") \ | |
2242 \ | |
2243 diagnostic(bool, VerifyAfterGC, false, \ | |
2244 "Verify memory system after GC") \ | |
2245 \ | |
2246 diagnostic(bool, VerifyDuringGC, false, \ | |
2247 "Verify memory system during GC (between phases)") \ | |
2248 \ | |
390 | 2249 diagnostic(bool, GCParallelVerificationEnabled, true, \ |
2250 "Enable parallel memory system verification") \ | |
2251 \ | |
1166 | 2252 diagnostic(bool, DeferInitialCardMark, false, \ |
2253 "When +ReduceInitialCardMarks, explicitly defer any that " \ | |
2254 "may arise from new_pre_store_barrier") \ | |
2255 \ | |
0 | 2256 diagnostic(bool, VerifyRememberedSets, false, \ |
2257 "Verify GC remembered sets") \ | |
2258 \ | |
2259 diagnostic(bool, VerifyObjectStartArray, true, \ | |
2260 "Verify GC object start array if verify before/after") \ | |
2261 \ | |
2262 product(bool, DisableExplicitGC, false, \ | |
2263 "Tells whether calling System.gc() does a full GC") \ | |
2264 \ | |
2265 notproduct(bool, CheckMemoryInitialization, false, \ | |
2266 "Checks memory initialization") \ | |
2267 \ | |
2268 product(bool, CollectGen0First, false, \ | |
2269 "Collect youngest generation before each full GC") \ | |
2270 \ | |
2271 diagnostic(bool, BindCMSThreadToCPU, false, \ | |
2272 "Bind CMS Thread to CPU if possible") \ | |
2273 \ | |
2274 diagnostic(uintx, CPUForCMSThread, 0, \ | |
2275 "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \ | |
2276 \ | |
2277 product(bool, BindGCTaskThreadsToCPUs, false, \ | |
2278 "Bind GCTaskThreads to CPUs if possible") \ | |
2279 \ | |
2280 product(bool, UseGCTaskAffinity, false, \ | |
2281 "Use worker affinity when asking for GCTasks") \ | |
2282 \ | |
2283 product(uintx, ProcessDistributionStride, 4, \ | |
2284 "Stride through processors when distributing processes") \ | |
2285 \ | |
2286 product(uintx, CMSCoordinatorYieldSleepCount, 10, \ | |
2287 "number of times the coordinator GC thread will sleep while " \ | |
2288 "yielding before giving up and resuming GC") \ | |
2289 \ | |
2290 product(uintx, CMSYieldSleepCount, 0, \ | |
2291 "number of times a GC thread (minus the coordinator) " \ | |
2292 "will sleep while yielding before giving up and resuming GC") \ | |
2293 \ | |
2294 /* gc tracing */ \ | |
2295 manageable(bool, PrintGC, false, \ | |
2296 "Print message at garbage collect") \ | |
2297 \ | |
2298 manageable(bool, PrintGCDetails, false, \ | |
2299 "Print more details at garbage collect") \ | |
2300 \ | |
2301 manageable(bool, PrintGCDateStamps, false, \ | |
2302 "Print date stamps at garbage collect") \ | |
2303 \ | |
2304 manageable(bool, PrintGCTimeStamps, false, \ | |
2305 "Print timestamps at garbage collect") \ | |
2306 \ | |
2307 product(bool, PrintGCTaskTimeStamps, false, \ | |
2308 "Print timestamps for individual gc worker thread tasks") \ | |
2309 \ | |
2310 develop(intx, ConcGCYieldTimeout, 0, \ | |
2311 "If non-zero, assert that GC threads yield within this # of ms.") \ | |
2312 \ | |
2313 notproduct(bool, TraceMarkSweep, false, \ | |
2314 "Trace mark sweep") \ | |
2315 \ | |
2316 product(bool, PrintReferenceGC, false, \ | |
2317 "Print times spent handling reference objects during GC " \ | |
2318 " (enabled only when PrintGCDetails)") \ | |
2319 \ | |
2320 develop(bool, TraceReferenceGC, false, \ | |
2321 "Trace handling of soft/weak/final/phantom references") \ | |
2322 \ | |
2323 develop(bool, TraceFinalizerRegistration, false, \ | |
2324 "Trace registration of final references") \ | |
2325 \ | |
2326 notproduct(bool, TraceScavenge, false, \ | |
2327 "Trace scavenge") \ | |
2328 \ | |
2329 product_rw(bool, TraceClassLoading, false, \ | |
2330 "Trace all classes loaded") \ | |
2331 \ | |
2332 product(bool, TraceClassLoadingPreorder, false, \ | |
2333 "Trace all classes loaded in order referenced (not loaded)") \ | |
2334 \ | |
2335 product_rw(bool, TraceClassUnloading, false, \ | |
2336 "Trace unloading of classes") \ | |
2337 \ | |
2338 product_rw(bool, TraceLoaderConstraints, false, \ | |
2339 "Trace loader constraints") \ | |
2340 \ | |
2341 product(bool, TraceGen0Time, false, \ | |
2342 "Trace accumulated time for Gen 0 collection") \ | |
2343 \ | |
2344 product(bool, TraceGen1Time, false, \ | |
2345 "Trace accumulated time for Gen 1 collection") \ | |
2346 \ | |
2347 product(bool, PrintTenuringDistribution, false, \ | |
2348 "Print tenuring age information") \ | |
2349 \ | |
2350 product_rw(bool, PrintHeapAtGC, false, \ | |
2351 "Print heap layout before and after each GC") \ | |
2352 \ | |
838
0316eac49d5a
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
779
diff
changeset
|
2353 product_rw(bool, PrintHeapAtGCExtended, false, \ |
0316eac49d5a
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
779
diff
changeset
|
2354 "Prints extended information about the layout of the heap " \ |
0316eac49d5a
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
779
diff
changeset
|
2355 "when -XX:+PrintHeapAtGC is set") \ |
0316eac49d5a
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
779
diff
changeset
|
2356 \ |
0 | 2357 product(bool, PrintHeapAtSIGBREAK, true, \ |
2358 "Print heap layout in response to SIGBREAK") \ | |
2359 \ | |
615
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
2360 manageable(bool, PrintClassHistogramBeforeFullGC, false, \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
2361 "Print a class histogram before any major stop-world GC") \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
2362 \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
2363 manageable(bool, PrintClassHistogramAfterFullGC, false, \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
2364 "Print a class histogram after any major stop-world GC") \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
2365 \ |
0 | 2366 manageable(bool, PrintClassHistogram, false, \ |
2367 "Print a histogram of class instances") \ | |
2368 \ | |
2369 develop(bool, TraceWorkGang, false, \ | |
2370 "Trace activities of work gangs") \ | |
2371 \ | |
2372 product(bool, TraceParallelOldGCTasks, false, \ | |
2373 "Trace multithreaded GC activity") \ | |
2374 \ | |
2375 develop(bool, TraceBlockOffsetTable, false, \ | |
2376 "Print BlockOffsetTable maps") \ | |
2377 \ | |
2378 develop(bool, TraceCardTableModRefBS, false, \ | |
2379 "Print CardTableModRefBS maps") \ | |
2380 \ | |
2381 develop(bool, TraceGCTaskManager, false, \ | |
2382 "Trace actions of the GC task manager") \ | |
2383 \ | |
2384 develop(bool, TraceGCTaskQueue, false, \ | |
2385 "Trace actions of the GC task queues") \ | |
2386 \ | |
4095
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4067
diff
changeset
|
2387 diagnostic(bool, TraceGCTaskThread, false, \ |
0 | 2388 "Trace actions of the GC task threads") \ |
2389 \ | |
2390 product(bool, PrintParallelOldGCPhaseTimes, false, \ | |
2391 "Print the time taken by each parallel old gc phase." \ | |
2392 "PrintGCDetails must also be enabled.") \ | |
2393 \ | |
2394 develop(bool, TraceParallelOldGCMarkingPhase, false, \ | |
2395 "Trace parallel old gc marking phase") \ | |
2396 \ | |
2397 develop(bool, TraceParallelOldGCSummaryPhase, false, \ | |
2398 "Trace parallel old gc summary phase") \ | |
2399 \ | |
2400 develop(bool, TraceParallelOldGCCompactionPhase, false, \ | |
2401 "Trace parallel old gc compaction phase") \ | |
2402 \ | |
2403 develop(bool, TraceParallelOldGCDensePrefix, false, \ | |
2404 "Trace parallel old gc dense prefix computation") \ | |
2405 \ | |
2406 develop(bool, IgnoreLibthreadGPFault, false, \ | |
2407 "Suppress workaround for libthread GP fault") \ | |
2408 \ | |
139
c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
95
diff
changeset
|
2409 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
|
2410 "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
|
2411 "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
|
2412 \ |
3767
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3745
diff
changeset
|
2413 /* GC log rotation setting */ \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3745
diff
changeset
|
2414 \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3745
diff
changeset
|
2415 product(bool, UseGCLogFileRotation, false, \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3745
diff
changeset
|
2416 "Prevent large gclog file for long running app. " \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3745
diff
changeset
|
2417 "Requires -Xloggc:<filename>") \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3745
diff
changeset
|
2418 \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3745
diff
changeset
|
2419 product(uintx, NumberOfGCLogFiles, 0, \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3745
diff
changeset
|
2420 "Number of gclog files in rotation, " \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3745
diff
changeset
|
2421 "Default: 0, no rotation") \ |
2a241e764894
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2422 \ |
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2423 product(uintx, GCLogFileSize, 0, \ |
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2424 "GC log file size, Default: 0 bytes, no rotation " \ |
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2425 "Only valid with UseGCLogFileRotation") \ |
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2426 \ |
0 | 2427 /* JVMTI heap profiling */ \ |
2428 \ | |
2429 diagnostic(bool, TraceJVMTIObjectTagging, false, \ | |
2430 "Trace JVMTI object tagging calls") \ | |
2431 \ | |
2432 diagnostic(bool, VerifyBeforeIteration, false, \ | |
2433 "Verify memory system before JVMTI iteration") \ | |
2434 \ | |
2435 /* compiler interface */ \ | |
2436 \ | |
2437 develop(bool, CIPrintCompilerName, false, \ | |
2438 "when CIPrint is active, print the name of the active compiler") \ | |
2439 \ | |
2440 develop(bool, CIPrintCompileQueue, false, \ | |
2441 "display the contents of the compile queue whenever a " \ | |
2442 "compilation is enqueued") \ | |
2443 \ | |
2444 develop(bool, CIPrintRequests, false, \ | |
2445 "display every request for compilation") \ | |
2446 \ | |
2447 product(bool, CITime, false, \ | |
2448 "collect timing information for compilation") \ | |
2449 \ | |
2450 develop(bool, CITimeEach, false, \ | |
2451 "display timing information after each successful compilation") \ | |
2452 \ | |
2453 develop(bool, CICountOSR, true, \ | |
2454 "use a separate counter when assigning ids to osr compilations") \ | |
2455 \ | |
2456 develop(bool, CICompileNatives, true, \ | |
2457 "compile native methods if supported by the compiler") \ | |
2458 \ | |
2459 develop_pd(bool, CICompileOSR, \ | |
2460 "compile on stack replacement methods if supported by the " \ | |
2461 "compiler") \ | |
2462 \ | |
2463 develop(bool, CIPrintMethodCodes, false, \ | |
2464 "print method bytecodes of the compiled code") \ | |
2465 \ | |
2466 develop(bool, CIPrintTypeFlow, false, \ | |
2467 "print the results of ciTypeFlow analysis") \ | |
2468 \ | |
2469 develop(bool, CITraceTypeFlow, false, \ | |
2470 "detailed per-bytecode tracing of ciTypeFlow analysis") \ | |
2471 \ | |
2472 develop(intx, CICloneLoopTestLimit, 100, \ | |
2473 "size limit for blocks heuristically cloned in ciTypeFlow") \ | |
2474 \ | |
2403 | 2475 develop(intx, OSROnlyBCI, -1, \ |
2476 "OSR only at this bci. Negative values mean exclude that bci") \ | |
2477 \ | |
0 | 2478 /* temp diagnostics */ \ |
2479 \ | |
2480 diagnostic(bool, TraceRedundantCompiles, false, \ | |
2481 "Have compile broker print when a request already in the queue is"\ | |
2482 " requested again") \ | |
2483 \ | |
2484 diagnostic(bool, InitialCompileFast, false, \ | |
2485 "Initial compile at CompLevel_fast_compile") \ | |
2486 \ | |
2487 diagnostic(bool, InitialCompileReallyFast, false, \ | |
2488 "Initial compile at CompLevel_really_fast_compile (no profile)") \ | |
2489 \ | |
2490 diagnostic(bool, FullProfileOnReInterpret, true, \ | |
2491 "On re-interpret unc-trap compile next at CompLevel_fast_compile")\ | |
2492 \ | |
2493 /* compiler */ \ | |
2494 \ | |
2495 product(intx, CICompilerCount, CI_COMPILER_COUNT, \ | |
2496 "Number of compiler threads to run") \ | |
2497 \ | |
2498 product(intx, CompilationPolicyChoice, 0, \ | |
2499 "which compilation policy (0/1)") \ | |
2500 \ | |
2501 develop(bool, UseStackBanging, true, \ | |
2502 "use stack banging for stack overflow checks (required for " \ | |
2503 "proper StackOverflow handling; disable only to measure cost " \ | |
2504 "of stackbanging)") \ | |
2505 \ | |
2506 develop(bool, Use24BitFPMode, true, \ | |
2507 "Set 24-bit FPU mode on a per-compile basis ") \ | |
2508 \ | |
2509 develop(bool, Use24BitFP, true, \ | |
2510 "use FP instructions that produce 24-bit precise results") \ | |
2511 \ | |
2512 develop(bool, UseStrictFP, true, \ | |
2513 "use strict fp if modifier strictfp is set") \ | |
2514 \ | |
2515 develop(bool, GenerateSynchronizationCode, true, \ | |
2516 "generate locking/unlocking code for synchronized methods and " \ | |
2517 "monitors") \ | |
2518 \ | |
2519 develop(bool, GenerateCompilerNullChecks, true, \ | |
2520 "Generate explicit null checks for loads/stores/calls") \ | |
2521 \ | |
2522 develop(bool, GenerateRangeChecks, true, \ | |
2523 "Generate range checks for array accesses") \ | |
2524 \ | |
2525 develop_pd(bool, ImplicitNullChecks, \ | |
2526 "generate code for implicit null checks") \ | |
2527 \ | |
2528 product(bool, PrintSafepointStatistics, false, \ | |
2529 "print statistics about safepoint synchronization") \ | |
2530 \ | |
2531 product(intx, PrintSafepointStatisticsCount, 300, \ | |
2532 "total number of safepoint statistics collected " \ | |
2533 "before printing them out") \ | |
2534 \ | |
2535 product(intx, PrintSafepointStatisticsTimeout, -1, \ | |
2536 "print safepoint statistics only when safepoint takes" \ | |
2537 " more than PrintSafepointSatisticsTimeout in millis") \ | |
2538 \ | |
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2539 product(bool, TraceSafepointCleanupTime, false, \ |
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2540 "print the break down of clean up tasks performed during" \ |
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2541 " safepoint") \ |
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2542 \ |
0 | 2543 develop(bool, InlineAccessors, true, \ |
2544 "inline accessor methods (get/set)") \ | |
2545 \ | |
2546 product(bool, Inline, true, \ | |
2547 "enable inlining") \ | |
2548 \ | |
2549 product(bool, ClipInlining, true, \ | |
2550 "clip inlining if aggregate method exceeds DesiredMethodLimit") \ | |
2551 \ | |
2552 develop(bool, UseCHA, true, \ | |
2553 "enable CHA") \ | |
2554 \ | |
2555 product(bool, UseTypeProfile, true, \ | |
2556 "Check interpreter profile for historically monomorphic calls") \ | |
2557 \ | |
2558 product(intx, TypeProfileMajorReceiverPercent, 90, \ | |
2559 "% of major receiver type to all profiled receivers") \ | |
2560 \ | |
2561 notproduct(bool, TimeCompiler, false, \ | |
2562 "time the compiler") \ | |
2563 \ | |
2564 notproduct(bool, TimeCompiler2, false, \ | |
2565 "detailed time the compiler (requires +TimeCompiler)") \ | |
2566 \ | |
2567 diagnostic(bool, PrintInlining, false, \ | |
2568 "prints inlining optimizations") \ | |
2569 \ | |
2570 diagnostic(bool, PrintIntrinsics, false, \ | |
2571 "prints attempted and successful inlining of intrinsics") \ | |
2572 \ | |
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2573 product(bool, UseCountLeadingZerosInstruction, false, \ |
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2574 "Use count leading zeros instruction") \ |
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2575 \ |
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2576 product(bool, UsePopCountInstruction, false, \ |
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2577 "Use population count instruction") \ |
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2578 \ |
0 | 2579 diagnostic(ccstrlist, DisableIntrinsic, "", \ |
2580 "do not expand intrinsics whose (internal) names appear here") \ | |
2581 \ | |
2582 develop(bool, StressReflectiveCode, false, \ | |
2583 "Use inexact types at allocations, etc., to test reflection") \ | |
2584 \ | |
2585 develop(bool, EagerInitialization, false, \ | |
2586 "Eagerly initialize classes if possible") \ | |
2587 \ | |
2588 develop(bool, TraceMethodReplacement, false, \ | |
2589 "Print when methods are replaced do to recompilation") \ | |
2590 \ | |
2591 develop(bool, PrintMethodFlushing, false, \ | |
2592 "print the nmethods being flushed") \ | |
2593 \ | |
2594 notproduct(bool, LogMultipleMutexLocking, false, \ | |
2595 "log locking and unlocking of mutexes (only if multiple locks " \ | |
2596 "are held)") \ | |
2597 \ | |
2598 develop(bool, UseRelocIndex, false, \ | |
2599 "use an index to speed random access to relocations") \ | |
2600 \ | |
2601 develop(bool, StressCodeBuffers, false, \ | |
2602 "Exercise code buffer expansion and other rare state changes") \ | |
2603 \ | |
2604 diagnostic(bool, DebugNonSafepoints, trueInDebug, \ | |
2605 "Generate extra debugging info for non-safepoints in nmethods") \ | |
2606 \ | |
2607 diagnostic(bool, DebugInlinedCalls, true, \ | |
2608 "If false, restricts profiled locations to the root method only") \ | |
2609 \ | |
4066 | 2610 product(bool, PrintVMOptions, false, \ |
1150 | 2611 "Print flags that appeared on the command line") \ |
0 | 2612 \ |
564 | 2613 product(bool, IgnoreUnrecognizedVMOptions, false, \ |
2614 "Ignore unrecognized VM options") \ | |
2615 \ | |
1150 | 2616 product(bool, PrintCommandLineFlags, false, \ |
2617 "Print flags specified on command line or set by ergonomics") \ | |
2618 \ | |
2619 product(bool, PrintFlagsInitial, false, \ | |
2620 "Print all VM flags before argument processing and exit VM") \ | |
2621 \ | |
2622 product(bool, PrintFlagsFinal, false, \ | |
2623 "Print all VM flags after argument and ergonomic processing") \ | |
2624 \ | |
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2625 notproduct(bool, PrintFlagsWithComments, false, \ |
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2626 "Print all VM flags with default values and descriptions and exit")\ |
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2627 \ |
0 | 2628 diagnostic(bool, SerializeVMOutput, true, \ |
2629 "Use a mutex to serialize output to tty and hotspot.log") \ | |
2630 \ | |
2631 diagnostic(bool, DisplayVMOutput, true, \ | |
2632 "Display all VM output on the tty, independently of LogVMOutput") \ | |
2633 \ | |
2634 diagnostic(bool, LogVMOutput, trueInDebug, \ | |
2635 "Save VM output to hotspot.log, or to LogFile") \ | |
2636 \ | |
2637 diagnostic(ccstr, LogFile, NULL, \ | |
2638 "If LogVMOutput is on, save VM output to this file [hotspot.log]") \ | |
2639 \ | |
2640 product(ccstr, ErrorFile, NULL, \ | |
2641 "If an error occurs, save the error data to this file " \ | |
2642 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \ | |
2643 \ | |
2644 product(bool, DisplayVMOutputToStderr, false, \ | |
2645 "If DisplayVMOutput is true, display all VM output to stderr") \ | |
2646 \ | |
2647 product(bool, DisplayVMOutputToStdout, false, \ | |
2648 "If DisplayVMOutput is true, display all VM output to stdout") \ | |
2649 \ | |
2650 product(bool, UseHeavyMonitors, false, \ | |
2651 "use heavyweight instead of lightweight Java monitors") \ | |
2652 \ | |
2653 notproduct(bool, PrintSymbolTableSizeHistogram, false, \ | |
2654 "print histogram of the symbol table") \ | |
2655 \ | |
2656 notproduct(bool, ExitVMOnVerifyError, false, \ | |
2657 "standard exit from VM if bytecode verify error " \ | |
2658 "(only in debug mode)") \ | |
2659 \ | |
2660 notproduct(ccstr, AbortVMOnException, NULL, \ | |
2661 "Call fatal if this exception is thrown. Example: " \ | |
2662 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \ | |
2663 \ | |
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2664 notproduct(ccstr, AbortVMOnExceptionMessage, NULL, \ |
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2665 "Call fatal if the exception pointed by AbortVMOnException " \ |
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2666 "has this message.") \ |
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2667 \ |
0 | 2668 develop(bool, DebugVtables, false, \ |
2669 "add debugging code to vtable dispatch") \ | |
2670 \ | |
2671 develop(bool, PrintVtables, false, \ | |
2672 "print vtables when printing klass") \ | |
2673 \ | |
2674 notproduct(bool, PrintVtableStats, false, \ | |
2675 "print vtables stats at end of run") \ | |
2676 \ | |
2677 develop(bool, TraceCreateZombies, false, \ | |
2678 "trace creation of zombie nmethods") \ | |
2679 \ | |
2680 notproduct(bool, IgnoreLockingAssertions, false, \ | |
2681 "disable locking assertions (for speed)") \ | |
2682 \ | |
2683 notproduct(bool, VerifyLoopOptimizations, false, \ | |
2684 "verify major loop optimizations") \ | |
2685 \ | |
2686 product(bool, RangeCheckElimination, true, \ | |
2687 "Split loop iterations to eliminate range checks") \ | |
2688 \ | |
2689 develop_pd(bool, UncommonNullCast, \ | |
2690 "track occurrences of null in casts; adjust compiler tactics") \ | |
2691 \ | |
2692 develop(bool, TypeProfileCasts, true, \ | |
2693 "treat casts like calls for purposes of type profiling") \ | |
2694 \ | |
2695 develop(bool, MonomorphicArrayCheck, true, \ | |
2696 "Uncommon-trap array store checks that require full type check") \ | |
2697 \ | |
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2698 diagnostic(bool, ProfileDynamicTypes, true, \ |
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2699 "do extra type profiling and use it more aggressively") \ |
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2700 \ |
0 | 2701 develop(bool, DelayCompilationDuringStartup, true, \ |
2702 "Delay invoking the compiler until main application class is " \ | |
2703 "loaded") \ | |
2704 \ | |
2705 develop(bool, CompileTheWorld, false, \ | |
2706 "Compile all methods in all classes in bootstrap class path " \ | |
2707 "(stress test)") \ | |
2708 \ | |
2709 develop(bool, CompileTheWorldPreloadClasses, true, \ | |
2710 "Preload all classes used by a class before start loading") \ | |
2711 \ | |
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2712 notproduct(intx, CompileTheWorldSafepointInterval, 100, \ |
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2713 "Force a safepoint every n compiles so sweeper can keep up") \ |
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2714 \ |
0 | 2715 develop(bool, TraceIterativeGVN, false, \ |
2716 "Print progress during Iterative Global Value Numbering") \ | |
2717 \ | |
2718 develop(bool, FillDelaySlots, true, \ | |
2719 "Fill delay slots (on SPARC only)") \ | |
2720 \ | |
2721 develop(bool, VerifyIterativeGVN, false, \ | |
2722 "Verify Def-Use modifications during sparse Iterative Global " \ | |
2723 "Value Numbering") \ | |
2724 \ | |
2725 notproduct(bool, TracePhaseCCP, false, \ | |
2726 "Print progress during Conditional Constant Propagation") \ | |
2727 \ | |
2728 develop(bool, TimeLivenessAnalysis, false, \ | |
2729 "Time computation of bytecode liveness analysis") \ | |
2730 \ | |
2731 develop(bool, TraceLivenessGen, false, \ | |
2732 "Trace the generation of liveness analysis information") \ | |
2733 \ | |
2734 notproduct(bool, TraceLivenessQuery, false, \ | |
2735 "Trace queries of liveness analysis information") \ | |
2736 \ | |
2737 notproduct(bool, CollectIndexSetStatistics, false, \ | |
2738 "Collect information about IndexSets") \ | |
2739 \ | |
2740 develop(bool, PrintDominators, false, \ | |
2741 "Print out dominator trees for GVN") \ | |
2742 \ | |
2743 develop(bool, UseLoopSafepoints, true, \ | |
2744 "Generate Safepoint nodes in every loop") \ | |
2745 \ | |
2746 notproduct(bool, TraceCISCSpill, false, \ | |
2747 "Trace allocators use of cisc spillable instructions") \ | |
2748 \ | |
2749 notproduct(bool, TraceSpilling, false, \ | |
2750 "Trace spilling") \ | |
2751 \ | |
2752 product(bool, SplitIfBlocks, true, \ | |
2753 "Clone compares and control flow through merge points to fold " \ | |
2754 "some branches") \ | |
2755 \ | |
2756 develop(intx, FastAllocateSizeLimit, 128*K, \ | |
2757 /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \ | |
2758 "Inline allocations larger than this in doublewords must go slow")\ | |
2759 \ | |
2760 product(bool, AggressiveOpts, false, \ | |
2761 "Enable aggressive optimizations - see arguments.cpp") \ | |
2762 \ | |
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2763 product(bool, UseStringCache, false, \ |
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2764 "Enable String cache capabilities on String.java") \ |
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2765 \ |
0 | 2766 /* statistics */ \ |
2767 develop(bool, CountCompiledCalls, false, \ | |
2768 "counts method invocations") \ | |
2769 \ | |
2770 notproduct(bool, CountRuntimeCalls, false, \ | |
2771 "counts VM runtime calls") \ | |
2772 \ | |
2773 develop(bool, CountJNICalls, false, \ | |
2774 "counts jni method invocations") \ | |
2775 \ | |
2776 notproduct(bool, CountJVMCalls, false, \ | |
2777 "counts jvm method invocations") \ | |
2778 \ | |
2779 notproduct(bool, CountRemovableExceptions, false, \ | |
2780 "count exceptions that could be replaced by branches due to " \ | |
2781 "inlining") \ | |
2782 \ | |
2783 notproduct(bool, ICMissHistogram, false, \ | |
2784 "produce histogram of IC misses") \ | |
2785 \ | |
2786 notproduct(bool, PrintClassStatistics, false, \ | |
2787 "prints class statistics at end of run") \ | |
2788 \ | |
2789 notproduct(bool, PrintMethodStatistics, false, \ | |
2790 "prints method statistics at end of run") \ | |
2791 \ | |
2792 /* interpreter */ \ | |
2793 develop(bool, ClearInterpreterLocals, false, \ | |
2794 "Always clear local variables of interpreter activations upon " \ | |
2795 "entry") \ | |
2796 \ | |
2797 product_pd(bool, RewriteBytecodes, \ | |
2798 "Allow rewriting of bytecodes (bytecodes are not immutable)") \ | |
2799 \ | |
2800 product_pd(bool, RewriteFrequentPairs, \ | |
2801 "Rewrite frequently used bytecode pairs into a single bytecode") \ | |
2802 \ | |
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2803 diagnostic(bool, PrintInterpreter, false, \ |
0 | 2804 "Prints the generated interpreter code") \ |
2805 \ | |
2806 product(bool, UseInterpreter, true, \ | |
2807 "Use interpreter for non-compiled methods") \ | |
2808 \ | |
2809 develop(bool, UseFastSignatureHandlers, true, \ | |
2810 "Use fast signature handlers for native calls") \ | |
2811 \ | |
2812 develop(bool, UseV8InstrsOnly, false, \ | |
2813 "Use SPARC-V8 Compliant instruction subset") \ | |
2814 \ | |
2815 product(bool, UseNiagaraInstrs, false, \ | |
2816 "Use Niagara-efficient instruction subset") \ | |
2817 \ | |
2818 develop(bool, UseCASForSwap, false, \ | |
2819 "Do not use swap instructions, but only CAS (in a loop) on SPARC")\ | |
2820 \ | |
2821 product(bool, UseLoopCounter, true, \ | |
2822 "Increment invocation counter on backward branch") \ | |
2823 \ | |
2824 product(bool, UseFastEmptyMethods, true, \ | |
2825 "Use fast method entry code for empty methods") \ | |
2826 \ | |
2827 product(bool, UseFastAccessorMethods, true, \ | |
2828 "Use fast method entry code for accessor methods") \ | |
2829 \ | |
2830 product_pd(bool, UseOnStackReplacement, \ | |
2831 "Use on stack replacement, calls runtime if invoc. counter " \ | |
2832 "overflows in loop") \ | |
2833 \ | |
2834 notproduct(bool, TraceOnStackReplacement, false, \ | |
2835 "Trace on stack replacement") \ | |
2836 \ | |
2837 develop(bool, PoisonOSREntry, true, \ | |
2838 "Detect abnormal calls to OSR code") \ | |
2839 \ | |
2840 product_pd(bool, PreferInterpreterNativeStubs, \ | |
2841 "Use always interpreter stubs for native methods invoked via " \ | |
2842 "interpreter") \ | |
2843 \ | |
2844 develop(bool, CountBytecodes, false, \ | |
2845 "Count number of bytecodes executed") \ | |
2846 \ | |
2847 develop(bool, PrintBytecodeHistogram, false, \ | |
2848 "Print histogram of the executed bytecodes") \ | |
2849 \ | |
2850 develop(bool, PrintBytecodePairHistogram, false, \ | |
2851 "Print histogram of the executed bytecode pairs") \ | |
2852 \ | |
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2853 diagnostic(bool, PrintSignatureHandlers, false, \ |
0 | 2854 "Print code generated for native method signature handlers") \ |
2855 \ | |
2856 develop(bool, VerifyOops, false, \ | |
2857 "Do plausibility checks for oops") \ | |
2858 \ | |
2859 develop(bool, CheckUnhandledOops, false, \ | |
2860 "Check for unhandled oops in VM code") \ | |
2861 \ | |
2862 develop(bool, VerifyJNIFields, trueInDebug, \ | |
2863 "Verify jfieldIDs for instance fields") \ | |
2864 \ | |
2865 notproduct(bool, VerifyJNIEnvThread, false, \ | |
2866 "Verify JNIEnv.thread == Thread::current() when entering VM " \ | |
2867 "from JNI") \ | |
2868 \ | |
2869 develop(bool, VerifyFPU, false, \ | |
2870 "Verify FPU state (check for NaN's, etc.)") \ | |
2871 \ | |
2872 develop(bool, VerifyThread, false, \ | |
2873 "Watch the thread register for corruption (SPARC only)") \ | |
2874 \ | |
2875 develop(bool, VerifyActivationFrameSize, false, \ | |
2876 "Verify that activation frame didn't become smaller than its " \ | |
2877 "minimal size") \ | |
2878 \ | |
2879 develop(bool, TraceFrequencyInlining, false, \ | |
2880 "Trace frequency based inlining") \ | |
2881 \ | |
2882 notproduct(bool, TraceTypeProfile, false, \ | |
2883 "Trace type profile") \ | |
2884 \ | |
2885 develop_pd(bool, InlineIntrinsics, \ | |
2886 "Inline intrinsics that can be statically resolved") \ | |
2887 \ | |
2888 product_pd(bool, ProfileInterpreter, \ | |
2889 "Profile at the bytecode level during interpretation") \ | |
2890 \ | |
2891 develop_pd(bool, ProfileTraps, \ | |
2892 "Profile deoptimization traps at the bytecode level") \ | |
2893 \ | |
2894 product(intx, ProfileMaturityPercentage, 20, \ | |
2895 "number of method invocations/branches (expressed as % of " \ | |
2896 "CompileThreshold) before using the method's profile") \ | |
2897 \ | |
2898 develop(bool, PrintMethodData, false, \ | |
2899 "Print the results of +ProfileInterpreter at end of run") \ | |
2900 \ | |
2901 develop(bool, VerifyDataPointer, trueInDebug, \ | |
2902 "Verify the method data pointer during interpreter profiling") \ | |
2903 \ | |
2904 develop(bool, VerifyCompiledCode, false, \ | |
2905 "Include miscellaneous runtime verifications in nmethod code; " \ | |
1064 | 2906 "default off because it disturbs nmethod size heuristics") \ |
0 | 2907 \ |
1119
547f81740344
6361589: Print out stack trace for target thread of GC crash
minqi
parents:
1064
diff
changeset
|
2908 notproduct(bool, CrashGCForDumpingJavaThread, false, \ |
547f81740344
6361589: Print out stack trace for target thread of GC crash
minqi
parents:
1064
diff
changeset
|
2909 "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
|
2910 "Test only") \ |
0 | 2911 \ |
2912 /* compilation */ \ | |
2913 product(bool, UseCompiler, true, \ | |
2914 "use compilation") \ | |
2915 \ | |
2916 develop(bool, TraceCompilationPolicy, false, \ | |
2917 "Trace compilation policy") \ | |
2918 \ | |
2919 develop(bool, TimeCompilationPolicy, false, \ | |
2920 "Time the compilation policy") \ | |
2921 \ | |
2922 product(bool, UseCounterDecay, true, \ | |
2923 "adjust recompilation counters") \ | |
2924 \ | |
2925 develop(intx, CounterHalfLifeTime, 30, \ | |
2926 "half-life time of invocation counters (in secs)") \ | |
2927 \ | |
2928 develop(intx, CounterDecayMinIntervalLength, 500, \ | |
2929 "Min. ms. between invocation of CounterDecay") \ | |
2930 \ | |
2931 product(bool, AlwaysCompileLoopMethods, false, \ | |
2932 "when using recompilation, never interpret methods " \ | |
2933 "containing loops") \ | |
2934 \ | |
2935 product(bool, DontCompileHugeMethods, true, \ | |
2936 "don't compile methods > HugeMethodLimit") \ | |
2937 \ | |
2938 /* Bytecode escape analysis estimation. */ \ | |
2939 product(bool, EstimateArgEscape, true, \ | |
2940 "Analyze bytecodes to estimate escape state of arguments") \ | |
2941 \ | |
2942 product(intx, BCEATraceLevel, 0, \ | |
2943 "How much tracing to do of bytecode escape analysis estimates") \ | |
2944 \ | |
2945 product(intx, MaxBCEAEstimateLevel, 5, \ | |
2946 "Maximum number of nested calls that are analyzed by BC EA.") \ | |
2947 \ | |
2948 product(intx, MaxBCEAEstimateSize, 150, \ | |
2949 "Maximum bytecode size of a method to be analyzed by BC EA.") \ | |
2950 \ | |
2951 product(intx, AllocatePrefetchStyle, 1, \ | |
2952 "0 = no prefetch, " \ | |
2953 "1 = prefetch instructions for each allocation, " \ | |
1367
9e321dcfa5b7
6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents:
1366
diff
changeset
|
2954 "2 = use TLAB watermark to gate allocation prefetch, " \ |
9e321dcfa5b7
6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents:
1366
diff
changeset
|
2955 "3 = use BIS instruction on Sparc for allocation prefetch") \ |
0 | 2956 \ |
2957 product(intx, AllocatePrefetchDistance, -1, \ | |
2958 "Distance to prefetch ahead of allocation pointer") \ | |
2959 \ | |
3854 | 2960 product(intx, AllocatePrefetchLines, 3, \ |
2961 "Number of lines to prefetch ahead of array allocation pointer") \ | |
2962 \ | |
2963 product(intx, AllocateInstancePrefetchLines, 1, \ | |
2964 "Number of lines to prefetch ahead of instance allocation pointer") \ | |
0 | 2965 \ |
2966 product(intx, AllocatePrefetchStepSize, 16, \ | |
2967 "Step size in bytes of sequential prefetch instructions") \ | |
2968 \ | |
2969 product(intx, AllocatePrefetchInstr, 0, \ | |
2970 "Prefetch instruction to prefetch ahead of allocation pointer") \ | |
2971 \ | |
2972 product(intx, ReadPrefetchInstr, 0, \ | |
2973 "Prefetch instruction to prefetch ahead") \ | |
2974 \ | |
3903 | 2975 product(uintx, ArraycopySrcPrefetchDistance, 0, \ |
2976 "Distance to prefetch source array in arracopy") \ | |
2977 \ | |
2978 product(uintx, ArraycopyDstPrefetchDistance, 0, \ | |
2979 "Distance to prefetch destination array in arracopy") \ | |
2980 \ | |
0 | 2981 /* deoptimization */ \ |
2982 develop(bool, TraceDeoptimization, false, \ | |
2983 "Trace deoptimization") \ | |
2984 \ | |
2985 develop(bool, DebugDeoptimization, false, \ | |
2986 "Tracing various information while debugging deoptimization") \ | |
2987 \ | |
2988 product(intx, SelfDestructTimer, 0, \ | |
2989 "Will cause VM to terminate after a given time (in minutes) " \ | |
2990 "(0 means off)") \ | |
2991 \ | |
2992 product(intx, MaxJavaStackTraceDepth, 1024, \ | |
2993 "Max. no. of lines in the stack trace for Java exceptions " \ | |
2994 "(0 means all)") \ | |
2995 \ | |
3328
277d0f6ca64d
7005503: Make GuaranteedSafepointInterval a diagnostic flag
kevinw
parents:
3255
diff
changeset
|
2996 NOT_EMBEDDED(diagnostic(intx, GuaranteedSafepointInterval, 1000, \ |
0 | 2997 "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
|
2998 "(0 means none)")) \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
2999 \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
3000 EMBEDDED_ONLY(product(intx, GuaranteedSafepointInterval, 0, \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
3001 "Guarantee a safepoint (at least) every so many milliseconds " \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
3002 "(0 means none)")) \ |
0 | 3003 \ |
3004 product(intx, SafepointTimeoutDelay, 10000, \ | |
3005 "Delay in milliseconds for option SafepointTimeout") \ | |
3006 \ | |
3007 product(intx, NmethodSweepFraction, 4, \ | |
3008 "Number of invocations of sweeper to cover all nmethods") \ | |
3009 \ | |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1513
diff
changeset
|
3010 product(intx, NmethodSweepCheckInterval, 5, \ |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1513
diff
changeset
|
3011 "Compilers wake up every n seconds to possibly sweep nmethods") \ |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1513
diff
changeset
|
3012 \ |
3384
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
3013 notproduct(bool, LogSweeper, false, \ |
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
3014 "Keep a ring buffer of sweeper activity") \ |
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
3015 \ |
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
3016 notproduct(intx, SweeperLogEntries, 1024, \ |
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
3017 "Number of records in the ring buffer of sweeper activity") \ |
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
3018 \ |
0 | 3019 notproduct(intx, MemProfilingInterval, 500, \ |
3020 "Time between each invocation of the MemProfiler") \ | |
3021 \ | |
3022 develop(intx, MallocCatchPtr, -1, \ | |
3023 "Hit breakpoint when mallocing/freeing this pointer") \ | |
3024 \ | |
3025 notproduct(intx, AssertRepeat, 1, \ | |
3026 "number of times to evaluate expression in assert " \ | |
3027 "(to estimate overhead); only works with -DUSE_REPEATED_ASSERTS") \ | |
3028 \ | |
3029 notproduct(ccstrlist, SuppressErrorAt, "", \ | |
3030 "List of assertions (file:line) to muzzle") \ | |
3031 \ | |
3032 notproduct(uintx, HandleAllocationLimit, 1024, \ | |
3033 "Threshold for HandleMark allocation when +TraceHandleAllocation "\ | |
3034 "is used") \ | |
3035 \ | |
3036 develop(uintx, TotalHandleAllocationLimit, 1024, \ | |
3037 "Threshold for total handle allocation when " \ | |
3038 "+TraceHandleAllocation is used") \ | |
3039 \ | |
3040 develop(intx, StackPrintLimit, 100, \ | |
3041 "number of stack frames to print in VM-level stack dump") \ | |
3042 \ | |
3043 notproduct(intx, MaxElementPrintSize, 256, \ | |
3044 "maximum number of elements to print") \ | |
3045 \ | |
3046 notproduct(intx, MaxSubklassPrintSize, 4, \ | |
3047 "maximum number of subklasses to print when printing klass") \ | |
3048 \ | |
1157
c3b315a0d58a
6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents:
1150
diff
changeset
|
3049 product(intx, MaxInlineLevel, 9, \ |
0 | 3050 "maximum number of nested calls that are inlined") \ |
3051 \ | |
1157
c3b315a0d58a
6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents:
1150
diff
changeset
|
3052 product(intx, MaxRecursiveInlineLevel, 1, \ |
0 | 3053 "maximum number of nested recursive calls that are inlined") \ |
3054 \ | |
675 | 3055 product_pd(intx, InlineSmallCode, \ |
0 | 3056 "Only inline already compiled methods if their code size is " \ |
3057 "less than this") \ | |
3058 \ | |
3059 product(intx, MaxInlineSize, 35, \ | |
3060 "maximum bytecode size of a method to be inlined") \ | |
3061 \ | |
3062 product_pd(intx, FreqInlineSize, \ | |
3063 "maximum bytecode size of a frequent method to be inlined") \ | |
3064 \ | |
1157
c3b315a0d58a
6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents:
1150
diff
changeset
|
3065 product(intx, MaxTrivialSize, 6, \ |
0 | 3066 "maximum bytecode size of a trivial method to be inlined") \ |
3067 \ | |
1157
c3b315a0d58a
6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents:
1150
diff
changeset
|
3068 product(intx, MinInliningThreshold, 250, \ |
0 | 3069 "min. invocation count a method needs to have to be inlined") \ |
3070 \ | |
3071 develop(intx, AlignEntryCode, 4, \ | |
3072 "aligns entry code to specified value (in bytes)") \ | |
3073 \ | |
3074 develop(intx, MethodHistogramCutoff, 100, \ | |
3075 "cutoff value for method invoc. histogram (+CountCalls)") \ | |
3076 \ | |
3077 develop(intx, ProfilerNumberOfInterpretedMethods, 25, \ | |
3078 "# of interpreted methods to show in profile") \ | |
3079 \ | |
3080 develop(intx, ProfilerNumberOfCompiledMethods, 25, \ | |
3081 "# of compiled methods to show in profile") \ | |
3082 \ | |
3083 develop(intx, ProfilerNumberOfStubMethods, 25, \ | |
3084 "# of stub methods to show in profile") \ | |
3085 \ | |
3086 develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \ | |
3087 "# of runtime stub nodes to show in profile") \ | |
3088 \ | |
3089 product(intx, ProfileIntervalsTicks, 100, \ | |
3090 "# of ticks between printing of interval profile " \ | |
3091 "(+ProfileIntervals)") \ | |
3092 \ | |
3093 notproduct(intx, ScavengeALotInterval, 1, \ | |
3094 "Interval between which scavenge will occur with +ScavengeALot") \ | |
3095 \ | |
3096 notproduct(intx, FullGCALotInterval, 1, \ | |
3097 "Interval between which full gc will occur with +FullGCALot") \ | |
3098 \ | |
3099 notproduct(intx, FullGCALotStart, 0, \ | |
3100 "For which invocation to start FullGCAlot") \ | |
3101 \ | |
3102 notproduct(intx, FullGCALotDummies, 32*K, \ | |
3103 "Dummy object allocated with +FullGCALot, forcing all objects " \ | |
3104 "to move") \ | |
3105 \ | |
3106 develop(intx, DontYieldALotInterval, 10, \ | |
3107 "Interval between which yields will be dropped (milliseconds)") \ | |
3108 \ | |
3109 develop(intx, MinSleepInterval, 1, \ | |
3110 "Minimum sleep() interval (milliseconds) when " \ | |
3111 "ConvertSleepToYield is off (used for SOLARIS)") \ | |
3112 \ | |
3113 product(intx, EventLogLength, 2000, \ | |
3114 "maximum nof events in event log") \ | |
3115 \ | |
3116 develop(intx, ProfilerPCTickThreshold, 15, \ | |
3117 "Number of ticks in a PC buckets to be a hotspot") \ | |
3118 \ | |
3119 notproduct(intx, DeoptimizeALotInterval, 5, \ | |
3120 "Number of exits until DeoptimizeALot kicks in") \ | |
3121 \ | |
3122 notproduct(intx, ZombieALotInterval, 5, \ | |
3123 "Number of exits until ZombieALot kicks in") \ | |
3124 \ | |
3125 develop(bool, StressNonEntrant, false, \ | |
3126 "Mark nmethods non-entrant at registration") \ | |
3127 \ | |
3128 diagnostic(intx, MallocVerifyInterval, 0, \ | |
3129 "if non-zero, verify C heap after every N calls to " \ | |
3130 "malloc/realloc/free") \ | |
3131 \ | |
3132 diagnostic(intx, MallocVerifyStart, 0, \ | |
3133 "if non-zero, start verifying C heap after Nth call to " \ | |
3134 "malloc/realloc/free") \ | |
3135 \ | |
1783 | 3136 product(intx, TypeProfileWidth, 2, \ |
0 | 3137 "number of receiver types to record in call/cast profile") \ |
3138 \ | |
3139 develop(intx, BciProfileWidth, 2, \ | |
3140 "number of return bci's to record in ret profile") \ | |
3141 \ | |
3142 product(intx, PerMethodRecompilationCutoff, 400, \ | |
3143 "After recompiling N times, stay in the interpreter (-1=>'Inf')") \ | |
3144 \ | |
1206
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1202
diff
changeset
|
3145 product(intx, PerBytecodeRecompilationCutoff, 200, \ |
0 | 3146 "Per-BCI limit on repeated recompilation (-1=>'Inf')") \ |
3147 \ | |
3148 product(intx, PerMethodTrapLimit, 100, \ | |
3149 "Limit on traps (of one kind) in a method (includes inlines)") \ | |
3150 \ | |
3151 product(intx, PerBytecodeTrapLimit, 4, \ | |
3152 "Limit on traps (of one kind) at a particular BCI") \ | |
3153 \ | |
3154 develop(intx, FreqCountInvocations, 1, \ | |
3155 "Scaling factor for branch frequencies (deprecated)") \ | |
3156 \ | |
3157 develop(intx, InlineFrequencyRatio, 20, \ | |
3158 "Ratio of call site execution to caller method invocation") \ | |
3159 \ | |
3160 develop_pd(intx, InlineFrequencyCount, \ | |
3161 "Count of call site execution necessary to trigger frequent " \ | |
3162 "inlining") \ | |
3163 \ | |
3164 develop(intx, InlineThrowCount, 50, \ | |
3165 "Force inlining of interpreted methods that throw this often") \ | |
3166 \ | |
3167 develop(intx, InlineThrowMaxSize, 200, \ | |
3168 "Force inlining of throwing methods smaller than this") \ | |
3169 \ | |
3170 product(intx, AliasLevel, 3, \ | |
3171 "0 for no aliasing, 1 for oop/field/static/array split, " \ | |
3172 "2 for class split, 3 for unique instances") \ | |
3173 \ | |
3174 develop(bool, VerifyAliases, false, \ | |
3175 "perform extra checks on the results of alias analysis") \ | |
3176 \ | |
3177 develop(intx, ProfilerNodeSize, 1024, \ | |
3178 "Size in K to allocate for the Profile Nodes of each thread") \ | |
3179 \ | |
3180 develop(intx, V8AtomicOperationUnderLockSpinCount, 50, \ | |
3181 "Number of times to spin wait on a v8 atomic operation lock") \ | |
3182 \ | |
3183 product(intx, ReadSpinIterations, 100, \ | |
3184 "Number of read attempts before a yield (spin inner loop)") \ | |
3185 \ | |
3186 product_pd(intx, PreInflateSpin, \ | |
3187 "Number of times to spin wait before inflation") \ | |
3188 \ | |
3189 product(intx, PreBlockSpin, 10, \ | |
3190 "Number of times to spin in an inflated lock before going to " \ | |
3191 "an OS lock") \ | |
3192 \ | |
3193 /* gc parameters */ \ | |
1064 | 3194 product(uintx, InitialHeapSize, 0, \ |
3195 "Initial heap size (in bytes); zero means OldSize + NewSize") \ | |
3196 \ | |
3197 product(uintx, MaxHeapSize, ScaleForWordSize(96*M), \ | |
3198 "Maximum heap size (in bytes)") \ | |
3199 \ | |
3200 product(uintx, OldSize, ScaleForWordSize(4*M), \ | |
3201 "Initial tenured generation size (in bytes)") \ | |
3202 \ | |
1287
8911d8c0596f
6923123: Hotspot refuses to start when -Xmx4m or -Xms4m is specified
phh
parents:
1211
diff
changeset
|
3203 product(uintx, NewSize, ScaleForWordSize(1*M), \ |
1064 | 3204 "Initial new generation size (in bytes)") \ |
0 | 3205 \ |
3206 product(uintx, MaxNewSize, max_uintx, \ | |
1064 | 3207 "Maximum new generation size (in bytes), max_uintx means set " \ |
3208 "ergonomically") \ | |
0 | 3209 \ |
3210 product(uintx, PretenureSizeThreshold, 0, \ | |
1064 | 3211 "Maximum size in bytes of objects allocated in DefNew " \ |
3212 "generation; zero means no maximum") \ | |
3213 \ | |
3214 product(uintx, TLABSize, 0, \ | |
3215 "Starting TLAB size (in bytes); zero means set ergonomically") \ | |
0 | 3216 \ |
3217 product(uintx, MinTLABSize, 2*K, \ | |
3218 "Minimum allowed TLAB size (in bytes)") \ | |
3219 \ | |
3220 product(uintx, TLABAllocationWeight, 35, \ | |
3221 "Allocation averaging weight") \ | |
3222 \ | |
3223 product(uintx, TLABWasteTargetPercent, 1, \ | |
3224 "Percentage of Eden that can be wasted") \ | |
3225 \ | |
3226 product(uintx, TLABRefillWasteFraction, 64, \ | |
3227 "Max TLAB waste at a refill (internal fragmentation)") \ | |
3228 \ | |
3229 product(uintx, TLABWasteIncrement, 4, \ | |
3230 "Increment allowed waste at slow allocation") \ | |
3231 \ | |
1064 | 3232 product(intx, SurvivorRatio, 8, \ |
0 | 3233 "Ratio of eden/survivor space size") \ |
3234 \ | |
1064 | 3235 product(intx, NewRatio, 2, \ |
0 | 3236 "Ratio of new/old generation sizes") \ |
3237 \ | |
3238 product_pd(uintx, NewSizeThreadIncrease, \ | |
3239 "Additional size added to desired new generation size per " \ | |
3240 "non-daemon thread (in bytes)") \ | |
3241 \ | |
3242 product_pd(uintx, PermSize, \ | |
1064 | 3243 "Initial size of permanent generation (in bytes)") \ |
0 | 3244 \ |
3245 product_pd(uintx, MaxPermSize, \ | |
3246 "Maximum size of permanent generation (in bytes)") \ | |
3247 \ | |
3248 product(uintx, MinHeapFreeRatio, 40, \ | |
3249 "Min percentage of heap free after GC to avoid expansion") \ | |
3250 \ | |
3251 product(uintx, MaxHeapFreeRatio, 70, \ | |
3252 "Max percentage of heap free after GC to avoid shrinking") \ | |
3253 \ | |
3254 product(intx, SoftRefLRUPolicyMSPerMB, 1000, \ | |
3255 "Number of milliseconds per MB of free space in the heap") \ | |
3256 \ | |
3257 product(uintx, MinHeapDeltaBytes, ScaleForWordSize(128*K), \ | |
3258 "Min change in heap space due to GC (in bytes)") \ | |
3259 \ | |
3260 product(uintx, MinPermHeapExpansion, ScaleForWordSize(256*K), \ | |
3261 "Min expansion of permanent heap (in bytes)") \ | |
3262 \ | |
3263 product(uintx, MaxPermHeapExpansion, ScaleForWordSize(4*M), \ | |
3264 "Max expansion of permanent heap without full GC (in bytes)") \ | |
3265 \ | |
3266 product(intx, QueuedAllocationWarningCount, 0, \ | |
3267 "Number of times an allocation that queues behind a GC " \ | |
3268 "will retry before printing a warning") \ | |
3269 \ | |
3270 diagnostic(uintx, VerifyGCStartAt, 0, \ | |
3271 "GC invoke count where +VerifyBefore/AfterGC kicks in") \ | |
3272 \ | |
3273 diagnostic(intx, VerifyGCLevel, 0, \ | |
3274 "Generation level at which to start +VerifyBefore/AfterGC") \ | |
3275 \ | |
3276 develop(uintx, ExitAfterGCNum, 0, \ | |
3277 "If non-zero, exit after this GC.") \ | |
3278 \ | |
3279 product(intx, MaxTenuringThreshold, 15, \ | |
3280 "Maximum value for tenuring threshold") \ | |
3281 \ | |
3282 product(intx, InitialTenuringThreshold, 7, \ | |
3283 "Initial value for tenuring threshold") \ | |
3284 \ | |
3285 product(intx, TargetSurvivorRatio, 50, \ | |
3286 "Desired percentage of survivor space used after scavenge") \ | |
3287 \ | |
438 | 3288 product(uintx, MarkSweepDeadRatio, 5, \ |
0 | 3289 "Percentage (0-100) of the old gen allowed as dead wood." \ |
3290 "Serial mark sweep treats this as both the min and max value." \ | |
3291 "CMS uses this value only if it falls back to mark sweep." \ | |
3292 "Par compact uses a variable scale based on the density of the" \ | |
3293 "generation and treats this as the max value when the heap is" \ | |
3294 "either completely full or completely empty. Par compact also" \ | |
3295 "has a smaller default value; see arguments.cpp.") \ | |
3296 \ | |
438 | 3297 product(uintx, PermMarkSweepDeadRatio, 20, \ |
0 | 3298 "Percentage (0-100) of the perm gen allowed as dead wood." \ |
3299 "See MarkSweepDeadRatio for collector-specific comments.") \ | |
3300 \ | |
3301 product(intx, MarkSweepAlwaysCompactCount, 4, \ | |
3302 "How often should we fully compact the heap (ignoring the dead " \ | |
3303 "space parameters)") \ | |
3304 \ | |
3305 product(intx, PrintCMSStatistics, 0, \ | |
3306 "Statistics for CMS") \ | |
3307 \ | |
3308 product(bool, PrintCMSInitiationStatistics, false, \ | |
3309 "Statistics for initiating a CMS collection") \ | |
3310 \ | |
3311 product(intx, PrintFLSStatistics, 0, \ | |
3312 "Statistics for CMS' FreeListSpace") \ | |
3313 \ | |
3314 product(intx, PrintFLSCensus, 0, \ | |
3315 "Census for CMS' FreeListSpace") \ | |
3316 \ | |
3317 develop(uintx, GCExpandToAllocateDelayMillis, 0, \ | |
3318 "Delay in ms between expansion and allocation") \ | |
3319 \ | |
3320 product(intx, DeferThrSuspendLoopCount, 4000, \ | |
3321 "(Unstable) Number of times to iterate in safepoint loop " \ | |
3322 " before blocking VM threads ") \ | |
3323 \ | |
3324 product(intx, DeferPollingPageLoopCount, -1, \ | |
3325 "(Unsafe,Unstable) Number of iterations in safepoint loop " \ | |
3326 "before changing safepoint polling page to RO ") \ | |
3327 \ | |
3328 product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \ | |
3329 \ | |
3330 product(bool, PSChunkLargeArrays, true, \ | |
3331 "true: process large arrays in chunks") \ | |
3332 \ | |
3333 product(uintx, GCDrainStackTargetSize, 64, \ | |
3334 "how many entries we'll try to leave on the stack during " \ | |
3335 "parallel GC") \ | |
3336 \ | |
3337 /* stack parameters */ \ | |
3338 product_pd(intx, StackYellowPages, \ | |
3339 "Number of yellow zone (recoverable overflows) pages") \ | |
3340 \ | |
3341 product_pd(intx, StackRedPages, \ | |
3342 "Number of red zone (unrecoverable overflows) pages") \ | |
3343 \ | |
3344 product_pd(intx, StackShadowPages, \ | |
3345 "Number of shadow zone (for overflow checking) pages" \ | |
3346 " this should exceed the depth of the VM and native call stack") \ | |
3347 \ | |
3348 product_pd(intx, ThreadStackSize, \ | |
3349 "Thread Stack Size (in Kbytes)") \ | |
3350 \ | |
3351 product_pd(intx, VMThreadStackSize, \ | |
3352 "Non-Java Thread Stack Size (in Kbytes)") \ | |
3353 \ | |
3354 product_pd(intx, CompilerThreadStackSize, \ | |
3355 "Compiler Thread Stack Size (in Kbytes)") \ | |
3356 \ | |
3357 develop_pd(uintx, JVMInvokeMethodSlack, \ | |
3358 "Stack space (bytes) required for JVM_InvokeMethod to complete") \ | |
3359 \ | |
3360 product(uintx, ThreadSafetyMargin, 50*M, \ | |
3361 "Thread safety margin is used on fixed-stack LinuxThreads (on " \ | |
3362 "Linux/x86 only) to prevent heap-stack collision. Set to 0 to " \ | |
3363 "disable this feature") \ | |
3364 \ | |
3365 /* code cache parameters */ \ | |
3366 develop(uintx, CodeCacheSegmentSize, 64, \ | |
3367 "Code cache segment size (in bytes) - smallest unit of " \ | |
3368 "allocation") \ | |
3369 \ | |
3370 develop_pd(intx, CodeEntryAlignment, \ | |
3371 "Code entry alignment for generated code (in bytes)") \ | |
3372 \ | |
1365 | 3373 product_pd(intx, OptoLoopAlignment, \ |
3374 "Align inner loops to zero relative to this modulus") \ | |
3375 \ | |
0 | 3376 product_pd(uintx, InitialCodeCacheSize, \ |
3377 "Initial code cache size (in bytes)") \ | |
3378 \ | |
3379 product_pd(uintx, ReservedCodeCacheSize, \ | |
3380 "Reserved code cache size (in bytes) - maximum code cache size") \ | |
3381 \ | |
3382 product(uintx, CodeCacheMinimumFreeSpace, 500*K, \ | |
3383 "When less than X space left, we stop compiling.") \ | |
3384 \ | |
3385 product_pd(uintx, CodeCacheExpansionSize, \ | |
3386 "Code cache expansion size (in bytes)") \ | |
3387 \ | |
3388 develop_pd(uintx, CodeCacheMinBlockLength, \ | |
3389 "Minimum number of segments in a code cache block.") \ | |
3390 \ | |
3391 notproduct(bool, ExitOnFullCodeCache, false, \ | |
3392 "Exit the VM if we fill the code cache.") \ | |
3393 \ | |
4039 | 3394 product(bool, UseCodeCacheFlushing, true, \ |
1202 | 3395 "Attempt to clean the code cache before shutting off compiler") \ |
3396 \ | |
3397 product(intx, MinCodeCacheFlushingInterval, 30, \ | |
3398 "Min number of seconds between code cache cleaning sessions") \ | |
3399 \ | |
3400 product(uintx, CodeCacheFlushingMinimumFreeSpace, 1500*K, \ | |
3401 "When less than X space left, start code cache cleaning") \ | |
3402 \ | |
0 | 3403 /* interpreter debugging */ \ |
3404 develop(intx, BinarySwitchThreshold, 5, \ | |
3405 "Minimal number of lookupswitch entries for rewriting to binary " \ | |
3406 "switch") \ | |
3407 \ | |
3408 develop(intx, StopInterpreterAt, 0, \ | |
3409 "Stops interpreter execution at specified bytecode number") \ | |
3410 \ | |
3411 develop(intx, TraceBytecodesAt, 0, \ | |
3412 "Traces bytecodes starting with specified bytecode number") \ | |
3413 \ | |
3414 /* compiler interface */ \ | |
3415 develop(intx, CIStart, 0, \ | |
3416 "the id of the first compilation to permit") \ | |
3417 \ | |
3418 develop(intx, CIStop, -1, \ | |
3419 "the id of the last compilation to permit") \ | |
3420 \ | |
3421 develop(intx, CIStartOSR, 0, \ | |
3422 "the id of the first osr compilation to permit " \ | |
3423 "(CICountOSR must be on)") \ | |
3424 \ | |
3425 develop(intx, CIStopOSR, -1, \ | |
3426 "the id of the last osr compilation to permit " \ | |
3427 "(CICountOSR must be on)") \ | |
3428 \ | |
3429 develop(intx, CIBreakAtOSR, -1, \ | |
3430 "id of osr compilation to break at") \ | |
3431 \ | |
3432 develop(intx, CIBreakAt, -1, \ | |
3433 "id of compilation to break at") \ | |
3434 \ | |
3435 product(ccstrlist, CompileOnly, "", \ | |
3436 "List of methods (pkg/class.name) to restrict compilation to") \ | |
3437 \ | |
3438 product(ccstr, CompileCommandFile, NULL, \ | |
3439 "Read compiler commands from this file [.hotspot_compiler]") \ | |
3440 \ | |
3441 product(ccstrlist, CompileCommand, "", \ | |
3442 "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \ | |
3443 \ | |
3444 product(bool, CICompilerCountPerCPU, false, \ | |
3445 "1 compiler thread for log(N CPUs)") \ | |
3446 \ | |
3447 develop(intx, CIFireOOMAt, -1, \ | |
3448 "Fire OutOfMemoryErrors throughout CI for testing the compiler " \ | |
3449 "(non-negative value throws OOM after this many CI accesses " \ | |
3450 "in each compile)") \ | |
3451 \ | |
3452 develop(intx, CIFireOOMAtDelay, -1, \ | |
3453 "Wait for this many CI accesses to occur in all compiles before " \ | |
3454 "beginning to throw OutOfMemoryErrors in each compile") \ | |
3455 \ | |
909
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diff
changeset
|
3456 notproduct(bool, CIObjectFactoryVerify, false, \ |
b32a809aab08
6866585: debug code in ciObjectFactory too slow for large objects
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905
diff
changeset
|
3457 "enable potentially expensive verification in ciObjectFactory") \ |
b32a809aab08
6866585: debug code in ciObjectFactory too slow for large objects
jcoomes
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905
diff
changeset
|
3458 \ |
0 | 3459 /* Priorities */ \ |
3460 product_pd(bool, UseThreadPriorities, "Use native thread priorities") \ | |
3461 \ | |
3462 product(intx, ThreadPriorityPolicy, 0, \ | |
3463 "0 : Normal. "\ | |
3464 " VM chooses priorities that are appropriate for normal "\ | |
3465 " applications. On Solaris NORM_PRIORITY and above are mapped "\ | |
3466 " to normal native priority. Java priorities below NORM_PRIORITY"\ | |
3467 " map to lower native priority values. On Windows applications"\ | |
3468 " are allowed to use higher native priorities. However, with "\ | |
3469 " ThreadPriorityPolicy=0, VM will not use the highest possible"\ | |
3470 " native priority, THREAD_PRIORITY_TIME_CRITICAL, as it may "\ | |
3471 " interfere with system threads. On Linux thread priorities "\ | |
3472 " are ignored because the OS does not support static priority "\ | |
3473 " in SCHED_OTHER scheduling class which is the only choice for"\ | |
3474 " non-root, non-realtime applications. "\ | |
3475 "1 : Aggressive. "\ | |
3476 " Java thread priorities map over to the entire range of "\ | |
3477 " native thread priorities. Higher Java thread priorities map "\ | |
3478 " to higher native thread priorities. This policy should be "\ | |
3479 " used with care, as sometimes it can cause performance "\ | |
3480 " degradation in the application and/or the entire system. On "\ | |
3481 " Linux this policy requires root privilege.") \ | |
3482 \ | |
3483 product(bool, ThreadPriorityVerbose, false, \ | |
3484 "print priority changes") \ | |
3485 \ | |
3486 product(intx, DefaultThreadPriority, -1, \ | |
3487 "what native priority threads run at if not specified elsewhere (-1 means no change)") \ | |
3488 \ | |
3489 product(intx, CompilerThreadPriority, -1, \ | |
3490 "what priority should compiler threads run at (-1 means no change)") \ | |
3491 \ | |
3492 product(intx, VMThreadPriority, -1, \ | |
3493 "what priority should VM threads run at (-1 means no change)") \ | |
3494 \ | |
3495 product(bool, CompilerThreadHintNoPreempt, true, \ | |
3496 "(Solaris only) Give compiler threads an extra quanta") \ | |
3497 \ | |
3498 product(bool, VMThreadHintNoPreempt, false, \ | |
3499 "(Solaris only) Give VM thread an extra quanta") \ | |
3500 \ | |
3501 product(intx, JavaPriority1_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3502 product(intx, JavaPriority2_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3503 product(intx, JavaPriority3_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3504 product(intx, JavaPriority4_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3505 product(intx, JavaPriority5_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3506 product(intx, JavaPriority6_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3507 product(intx, JavaPriority7_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3508 product(intx, JavaPriority8_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3509 product(intx, JavaPriority9_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3510 product(intx, JavaPriority10_To_OSPriority,-1, "Map Java priorities to OS priorities") \ | |
3511 \ | |
3512 /* compiler debugging */ \ | |
3513 notproduct(intx, CompileTheWorldStartAt, 1, \ | |
3514 "First class to consider when using +CompileTheWorld") \ | |
3515 \ | |
3516 notproduct(intx, CompileTheWorldStopAt, max_jint, \ | |
3517 "Last class to consider when using +CompileTheWorld") \ | |
3518 \ | |
3519 develop(intx, NewCodeParameter, 0, \ | |
3520 "Testing Only: Create a dedicated integer parameter before " \ | |
3521 "putback") \ | |
3522 \ | |
3523 /* new oopmap storage allocation */ \ | |
3524 develop(intx, MinOopMapAllocation, 8, \ | |
3525 "Minimum number of OopMap entries in an OopMapSet") \ | |
3526 \ | |
3527 /* Background Compilation */ \ | |
3528 develop(intx, LongCompileThreshold, 50, \ | |
3529 "Used with +TraceLongCompiles") \ | |
3530 \ | |
3531 product(intx, StarvationMonitorInterval, 200, \ | |
3532 "Pause between each check in ms") \ | |
3533 \ | |
3534 /* recompilation */ \ | |
3535 product_pd(intx, CompileThreshold, \ | |
3536 "number of interpreted method invocations before (re-)compiling") \ | |
3537 \ | |
3538 product_pd(intx, BackEdgeThreshold, \ | |
3539 "Interpreter Back edge threshold at which an OSR compilation is invoked")\ | |
3540 \ | |
1783 | 3541 product(intx, Tier0InvokeNotifyFreqLog, 7, \ |
3542 "Interpreter (tier 0) invocation notification frequency.") \ | |
3543 \ | |
3544 product(intx, Tier2InvokeNotifyFreqLog, 11, \ | |
3545 "C1 without MDO (tier 2) invocation notification frequency.") \ | |
3546 \ | |
3547 product(intx, Tier3InvokeNotifyFreqLog, 10, \ | |
3548 "C1 with MDO profiling (tier 3) invocation notification " \ | |
3549 "frequency.") \ | |
3550 \ | |
3964
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3960
diff
changeset
|
3551 product(intx, Tier23InlineeNotifyFreqLog, 20, \ |
dc45ae774613
7096639: Tiered: Incorrect counter overflow handling for inlined methods
iveresov
parents:
3960
diff
changeset
|
3552 "Inlinee invocation (tiers 2 and 3) notification frequency") \ |
dc45ae774613
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iveresov
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3960
diff
changeset
|
3553 \ |
1783 | 3554 product(intx, Tier0BackedgeNotifyFreqLog, 10, \ |
3555 "Interpreter (tier 0) invocation notification frequency.") \ | |
3556 \ | |
3557 product(intx, Tier2BackedgeNotifyFreqLog, 14, \ | |
3558 "C1 without MDO (tier 2) invocation notification frequency.") \ | |
3559 \ | |
3560 product(intx, Tier3BackedgeNotifyFreqLog, 13, \ | |
3561 "C1 with MDO profiling (tier 3) invocation notification " \ | |
3562 "frequency.") \ | |
3563 \ | |
3564 product(intx, Tier2CompileThreshold, 0, \ | |
3565 "threshold at which tier 2 compilation is invoked") \ | |
3566 \ | |
3567 product(intx, Tier2BackEdgeThreshold, 0, \ | |
3568 "Back edge threshold at which tier 2 compilation is invoked") \ | |
3569 \ | |
3570 product(intx, Tier3InvocationThreshold, 200, \ | |
3571 "Compile if number of method invocations crosses this " \ | |
3572 "threshold") \ | |
3573 \ | |
3574 product(intx, Tier3MinInvocationThreshold, 100, \ | |
3575 "Minimum invocation to compile at tier 3") \ | |
3576 \ | |
3577 product(intx, Tier3CompileThreshold, 2000, \ | |
3578 "Threshold at which tier 3 compilation is invoked (invocation " \ | |
3579 "minimum must be satisfied.") \ | |
3580 \ | |
4819 | 3581 product(intx, Tier3BackEdgeThreshold, 60000, \ |
1783 | 3582 "Back edge threshold at which tier 3 OSR compilation is invoked") \ |
3583 \ | |
3584 product(intx, Tier4InvocationThreshold, 5000, \ | |
3585 "Compile if number of method invocations crosses this " \ | |
3586 "threshold") \ | |
3587 \ | |
3588 product(intx, Tier4MinInvocationThreshold, 600, \ | |
3589 "Minimum invocation to compile at tier 4") \ | |
3590 \ | |
3591 product(intx, Tier4CompileThreshold, 15000, \ | |
3592 "Threshold at which tier 4 compilation is invoked (invocation " \ | |
3593 "minimum must be satisfied.") \ | |
3594 \ | |
3595 product(intx, Tier4BackEdgeThreshold, 40000, \ | |
3596 "Back edge threshold at which tier 4 OSR compilation is invoked") \ | |
3597 \ | |
3598 product(intx, Tier3DelayOn, 5, \ | |
3599 "If C2 queue size grows over this amount per compiler thread " \ | |
3600 "stop compiling at tier 3 and start compiling at tier 2") \ | |
3601 \ | |
3602 product(intx, Tier3DelayOff, 2, \ | |
3603 "If C2 queue size is less than this amount per compiler thread " \ | |
3604 "allow methods compiled at tier 2 transition to tier 3") \ | |
3605 \ | |
3606 product(intx, Tier3LoadFeedback, 5, \ | |
3607 "Tier 3 thresholds will increase twofold when C1 queue size " \ | |
3608 "reaches this amount per compiler thread") \ | |
3609 \ | |
3610 product(intx, Tier4LoadFeedback, 3, \ | |
3611 "Tier 4 thresholds will increase twofold when C2 queue size " \ | |
3612 "reaches this amount per compiler thread") \ | |
3613 \ | |
3614 product(intx, TieredCompileTaskTimeout, 50, \ | |
3615 "Kill compile task if method was not used within " \ | |
3616 "given timeout in milliseconds") \ | |
3617 \ | |
3618 product(intx, TieredStopAtLevel, 4, \ | |
3619 "Stop at given compilation level") \ | |
3620 \ | |
3621 product(intx, Tier0ProfilingStartPercentage, 200, \ | |
3622 "Start profiling in interpreter if the counters exceed tier 3" \ | |
3623 "thresholds by the specified percentage") \ | |
3624 \ | |
3625 product(intx, TieredRateUpdateMinTime, 1, \ | |
3626 "Minimum rate sampling interval (in milliseconds)") \ | |
3627 \ | |
3628 product(intx, TieredRateUpdateMaxTime, 25, \ | |
3629 "Maximum rate sampling interval (in milliseconds)") \ | |
0 | 3630 \ |
3631 product_pd(bool, TieredCompilation, \ | |
1783 | 3632 "Enable tiered compilation") \ |
3633 \ | |
3634 product(bool, PrintTieredEvents, false, \ | |
3635 "Print tiered events notifications") \ | |
0 | 3636 \ |
3637 product(bool, StressTieredRuntime, false, \ | |
3638 "Alternate client and server compiler on compile requests") \ | |
3639 \ | |
3640 product_pd(intx, OnStackReplacePercentage, \ | |
3641 "NON_TIERED number of method invocations/branches (expressed as %"\ | |
3642 "of CompileThreshold) before (re-)compiling OSR code") \ | |
3643 \ | |
3644 product(intx, InterpreterProfilePercentage, 33, \ | |
3645 "NON_TIERED number of method invocations/branches (expressed as %"\ | |
3646 "of CompileThreshold) before profiling in the interpreter") \ | |
3647 \ | |
3648 develop(intx, MaxRecompilationSearchLength, 10, \ | |
3649 "max. # frames to inspect searching for recompilee") \ | |
3650 \ | |
3651 develop(intx, MaxInterpretedSearchLength, 3, \ | |
3652 "max. # interp. frames to skip when searching for recompilee") \ | |
3653 \ | |
3654 develop(intx, DesiredMethodLimit, 8000, \ | |
3655 "desired max. method size (in bytecodes) after inlining") \ | |
3656 \ | |
3657 develop(intx, HugeMethodLimit, 8000, \ | |
3658 "don't compile methods larger than this if " \ | |
3659 "+DontCompileHugeMethods") \ | |
3660 \ | |
3661 /* New JDK 1.4 reflection implementation */ \ | |
3662 \ | |
3663 develop(bool, UseNewReflection, true, \ | |
3664 "Temporary flag for transition to reflection based on dynamic " \ | |
3665 "bytecode generation in 1.4; can no longer be turned off in 1.4 " \ | |
3666 "JDK, and is unneeded in 1.3 JDK, but marks most places VM " \ | |
3667 "changes were needed") \ | |
3668 \ | |
3669 develop(bool, VerifyReflectionBytecodes, false, \ | |
3670 "Force verification of 1.4 reflection bytecodes. Does not work " \ | |
3671 "in situations like that described in 4486457 or for " \ | |
3672 "constructors generated for serialization, so can not be enabled "\ | |
3673 "in product.") \ | |
3674 \ | |
3675 product(bool, ReflectionWrapResolutionErrors, true, \ | |
3676 "Temporary flag for transition to AbstractMethodError wrapped " \ | |
3677 "in InvocationTargetException. See 6531596") \ | |
3678 \ | |
3679 \ | |
3680 develop(intx, FastSuperclassLimit, 8, \ | |
3681 "Depth of hardwired instanceof accelerator array") \ | |
3682 \ | |
3683 /* Properties for Java libraries */ \ | |
3684 \ | |
3685 product(intx, MaxDirectMemorySize, -1, \ | |
3686 "Maximum total size of NIO direct-buffer allocations") \ | |
3687 \ | |
3688 /* temporary developer defined flags */ \ | |
3689 \ | |
3690 diagnostic(bool, UseNewCode, false, \ | |
3691 "Testing Only: Use the new version while testing") \ | |
3692 \ | |
3693 diagnostic(bool, UseNewCode2, false, \ | |
3694 "Testing Only: Use the new version while testing") \ | |
3695 \ | |
3696 diagnostic(bool, UseNewCode3, false, \ | |
3697 "Testing Only: Use the new version while testing") \ | |
3698 \ | |
3699 /* flags for performance data collection */ \ | |
3700 \ | |
3797
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diff
changeset
|
3701 product(bool, UsePerfData, falseInEmbedded, \ |
0 | 3702 "Flag to disable jvmstat instrumentation for performance testing" \ |
3797
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diff
changeset
|
3703 "and problem isolation purposes.") \ |
0 | 3704 \ |
3705 product(bool, PerfDataSaveToFile, false, \ | |
3706 "Save PerfData memory to hsperfdata_<pid> file on exit") \ | |
3707 \ | |
3708 product(ccstr, PerfDataSaveFile, NULL, \ | |
3709 "Save PerfData memory to the specified absolute pathname," \ | |
3710 "%p in the file name if present will be replaced by pid") \ | |
3711 \ | |
3712 product(intx, PerfDataSamplingInterval, 50 /*ms*/, \ | |
3713 "Data sampling interval in milliseconds") \ | |
3714 \ | |
3715 develop(bool, PerfTraceDataCreation, false, \ | |
3716 "Trace creation of Performance Data Entries") \ | |
3717 \ | |
3718 develop(bool, PerfTraceMemOps, false, \ | |
3719 "Trace PerfMemory create/attach/detach calls") \ | |
3720 \ | |
3721 product(bool, PerfDisableSharedMem, false, \ | |
3722 "Store performance data in standard memory") \ | |
3723 \ | |
3724 product(intx, PerfDataMemorySize, 32*K, \ | |
3725 "Size of performance data memory region. Will be rounded " \ | |
3726 "up to a multiple of the native os page size.") \ | |
3727 \ | |
3728 product(intx, PerfMaxStringConstLength, 1024, \ | |
3729 "Maximum PerfStringConstant string length before truncation") \ | |
3730 \ | |
3731 product(bool, PerfAllowAtExitRegistration, false, \ | |
3732 "Allow registration of atexit() methods") \ | |
3733 \ | |
3734 product(bool, PerfBypassFileSystemCheck, false, \ | |
3735 "Bypass Win32 file system criteria checks (Windows Only)") \ | |
3736 \ | |
3737 product(intx, UnguardOnExecutionViolation, 0, \ | |
3738 "Unguard page and retry on no-execute fault (Win32 only)" \ | |
3739 "0=off, 1=conservative, 2=aggressive") \ | |
3740 \ | |
3741 /* Serviceability Support */ \ | |
3742 \ | |
3743 product(bool, ManagementServer, false, \ | |
3744 "Create JMX Management Server") \ | |
3745 \ | |
3746 product(bool, DisableAttachMechanism, false, \ | |
3747 "Disable mechanism that allows tools to attach to this VM") \ | |
3748 \ | |
3749 product(bool, StartAttachListener, false, \ | |
3750 "Always start Attach Listener at VM startup") \ | |
3751 \ | |
3752 manageable(bool, PrintConcurrentLocks, false, \ | |
3753 "Print java.util.concurrent locks in thread dump") \ | |
3754 \ | |
2209
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kamg
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diff
changeset
|
3755 product(bool, TransmitErrorReport, false, \ |
2199
d8a72fbc4be7
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2192
diff
changeset
|
3756 "Enable error report transmission on erroneous termination") \ |
d8a72fbc4be7
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2192
diff
changeset
|
3757 \ |
2209
e9aa2ca89ad6
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changeset
|
3758 product(ccstr, ErrorReportServer, NULL, \ |
2199
d8a72fbc4be7
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changeset
|
3759 "Override built-in error report server address") \ |
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diff
changeset
|
3760 \ |
0 | 3761 /* Shared spaces */ \ |
3762 \ | |
3763 product(bool, UseSharedSpaces, true, \ | |
3764 "Use shared spaces in the permanent generation") \ | |
3765 \ | |
3766 product(bool, RequireSharedSpaces, false, \ | |
3767 "Require shared spaces in the permanent generation") \ | |
3768 \ | |
3769 product(bool, DumpSharedSpaces, false, \ | |
3770 "Special mode: JVM reads a class list, loads classes, builds " \ | |
3771 "shared spaces, and dumps the shared spaces to a file to be " \ | |
3772 "used in future JVM runs.") \ | |
3773 \ | |
3774 product(bool, PrintSharedSpaces, false, \ | |
3775 "Print usage of shared spaces") \ | |
3776 \ | |
3777 product(uintx, SharedDummyBlockSize, 512*M, \ | |
3778 "Size of dummy block used to shift heap addresses (in bytes)") \ | |
3779 \ | |
1875 | 3780 product(uintx, SharedReadWriteSize, NOT_LP64(12*M) LP64_ONLY(13*M), \ |
0 | 3781 "Size of read-write space in permanent generation (in bytes)") \ |
3782 \ | |
910
10d8c0d0d60e
6867645: java -Xshare:dump failed - read only space too small
jcoomes
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909
diff
changeset
|
3783 product(uintx, SharedReadOnlySize, 10*M, \ |
0 | 3784 "Size of read-only space in permanent generation (in bytes)") \ |
3785 \ | |
2242
6e70f1bb7f6f
7019557: SharedMiscDataSize too small for 64-bit fastdebug JVM
coleenp
parents:
2204
diff
changeset
|
3786 product(uintx, SharedMiscDataSize, NOT_LP64(4*M) LP64_ONLY(5*M), \ |
0 | 3787 "Size of the shared data area adjacent to the heap (in bytes)") \ |
3788 \ | |
3789 product(uintx, SharedMiscCodeSize, 4*M, \ | |
3790 "Size of the shared code area adjacent to the heap (in bytes)") \ | |
3791 \ | |
3792 diagnostic(bool, SharedOptimizeColdStart, true, \ | |
3793 "At dump time, order shared objects to achieve better " \ | |
3794 "cold startup time.") \ | |
3795 \ | |
3796 develop(intx, SharedOptimizeColdStartPolicy, 2, \ | |
3797 "Reordering policy for SharedOptimizeColdStart " \ | |
3798 "0=favor classload-time locality, 1=balanced, " \ | |
3799 "2=favor runtime locality") \ | |
3800 \ | |
3801 diagnostic(bool, SharedSkipVerify, false, \ | |
3802 "Skip assert() and verify() which page-in unwanted shared " \ | |
3803 "objects. ") \ | |
3804 \ | |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
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2403
diff
changeset
|
3805 diagnostic(bool, EnableInvokeDynamic, true, \ |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3806 "support JSR 292 (method handles, invokedynamic, " \ |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3807 "anonymous classes") \ |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3808 \ |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
406
diff
changeset
|
3809 product(bool, AnonymousClasses, false, \ |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3810 "support sun.misc.Unsafe.defineAnonymousClass (deprecated)") \ |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
406
diff
changeset
|
3811 \ |
905
bd2b1f617a4e
6868487: EnableInvokeDynamic and EnableMethodHandles should not be visible flags in JDK6 or JDK7
jrose
parents:
885
diff
changeset
|
3812 experimental(bool, EnableMethodHandles, false, \ |
2416
38fea01eb669
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parents:
2403
diff
changeset
|
3813 "support method handles (deprecated)") \ |
710 | 3814 \ |
3815 diagnostic(intx, MethodHandlePushLimit, 3, \ | |
3816 "number of additional stack slots a method handle may push") \ | |
3817 \ | |
3757
f8c9417e3571
7052219: JSR 292: Crash in ~BufferBlob::MethodHandles adapters
never
parents:
3745
diff
changeset
|
3818 diagnostic(bool, PrintMethodHandleStubs, false, \ |
f8c9417e3571
7052219: JSR 292: Crash in ~BufferBlob::MethodHandles adapters
never
parents:
3745
diff
changeset
|
3819 "Print generated stub code for method handles") \ |
f8c9417e3571
7052219: JSR 292: Crash in ~BufferBlob::MethodHandles adapters
never
parents:
3745
diff
changeset
|
3820 \ |
710 | 3821 develop(bool, TraceMethodHandles, false, \ |
3822 "trace internal method handle operations") \ | |
3823 \ | |
3824 diagnostic(bool, VerifyMethodHandles, trueInDebug, \ | |
3825 "perform extra checks when constructing method handles") \ | |
3826 \ | |
3827 diagnostic(bool, OptimizeMethodHandles, true, \ | |
3828 "when constructing method handles, try to improve them") \ | |
3829 \ | |
3388
a80577f854f9
7045513: JSR 292 inlining causes crashes in methodHandleWalk.cpp
never
parents:
3384
diff
changeset
|
3830 develop(bool, StressMethodHandleWalk, false, \ |
a80577f854f9
7045513: JSR 292 inlining causes crashes in methodHandleWalk.cpp
never
parents:
3384
diff
changeset
|
3831 "Process all method handles with MethodHandleWalk") \ |
a80577f854f9
7045513: JSR 292 inlining causes crashes in methodHandleWalk.cpp
never
parents:
3384
diff
changeset
|
3832 \ |
1173
73b22f919c34
6912065: final fields in objects need to support inlining optimizations for JSR 292
jrose
parents:
1157
diff
changeset
|
3833 experimental(bool, TrustFinalNonStaticFields, false, \ |
73b22f919c34
6912065: final fields in objects need to support inlining optimizations for JSR 292
jrose
parents:
1157
diff
changeset
|
3834 "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
|
3835 \ |
3745
a93146d0e4be
7049410: JSR 292 old method name MethodHandle.invokeGeneric should not be accepted by the JVM
jrose
parents:
3388
diff
changeset
|
3836 experimental(bool, AllowInvokeGeneric, false, \ |
2356
72dee110246f
6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
2325
diff
changeset
|
3837 "accept MethodHandle.invoke and MethodHandle.invokeGeneric " \ |
72dee110246f
6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
2325
diff
changeset
|
3838 "as equivalent methods") \ |
72dee110246f
6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
2325
diff
changeset
|
3839 \ |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3840 develop(bool, TraceInvokeDynamic, false, \ |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3841 "trace internal invoke dynamic operations") \ |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3842 \ |
0 | 3843 diagnostic(bool, PauseAtStartup, false, \ |
3844 "Causes the VM to pause at startup time and wait for the pause " \ | |
3845 "file to be removed (default: ./vm.paused.<pid>)") \ | |
3846 \ | |
3847 diagnostic(ccstr, PauseAtStartupFile, NULL, \ | |
3848 "The file to create and for whose removal to await when pausing " \ | |
3849 "at startup. (default: ./vm.paused.<pid>)") \ | |
3850 \ | |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2265
diff
changeset
|
3851 diagnostic(bool, PauseAtExit, false, \ |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2265
diff
changeset
|
3852 "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
|
3853 \ |
0 | 3854 product(bool, ExtendedDTraceProbes, false, \ |
3855 "Enable performance-impacting dtrace probes") \ | |
3856 \ | |
3857 product(bool, DTraceMethodProbes, false, \ | |
3858 "Enable dtrace probes for method-entry and method-exit") \ | |
3859 \ | |
3860 product(bool, DTraceAllocProbes, false, \ | |
3861 "Enable dtrace probes for object allocation") \ | |
3862 \ | |
3863 product(bool, DTraceMonitorProbes, false, \ | |
3864 "Enable dtrace probes for monitor events") \ | |
3865 \ | |
3866 product(bool, RelaxAccessControlCheck, false, \ | |
3867 "Relax the access control checks in the verifier") \ | |
3868 \ | |
116
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6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
113
diff
changeset
|
3869 diagnostic(bool, PrintDTraceDOF, false, \ |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
113
diff
changeset
|
3870 "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
|
3871 \ |
2378 | 3872 product(uintx, StringTableSize, 1009, \ |
3873 "Number of buckets in the interned String table") \ | |
3874 \ | |
449
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
443
diff
changeset
|
3875 product(bool, UseVMInterruptibleIO, false, \ |
0 | 3876 "(Unstable, Solaris-specific) Thread interrupt before or with " \ |
449
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
443
diff
changeset
|
3877 "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
|
3878 " of this flag is true for JDK 6 and earliers") |
0 | 3879 |
3880 /* | |
3881 * Macros for factoring of globals | |
3882 */ | |
3883 | |
3884 // Interface macros | |
3885 #define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; | |
3886 #define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name; | |
3887 #define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name; | |
350
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
3888 #define DECLARE_EXPERIMENTAL_FLAG(type, name, value, doc) extern "C" type name; |
0 | 3889 #define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name; |
3890 #define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name; | |
3891 #ifdef PRODUCT | |
3892 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) const type name = value; | |
3893 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) const type name = pd_##name; | |
3894 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) | |
3895 #else | |
3896 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name; | |
3897 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name; | |
3898 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name; | |
3899 #endif | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3900 // Special LP64 flags, product only needed for now. |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3901 #ifdef _LP64 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3902 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3903 #else |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3904 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) const type name = value; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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109
diff
changeset
|
3905 #endif // _LP64 |
0 | 3906 |
3907 // Implementation macros | |
3908 #define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value; | |
3909 #define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name; | |
3910 #define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value; | |
350
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
3911 #define MATERIALIZE_EXPERIMENTAL_FLAG(type, name, value, doc) type name = value; |
0 | 3912 #define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value; |
3913 #define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value; | |
3914 #ifdef PRODUCT | |
3915 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) /* flag name is constant */ | |
3916 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) /* flag name is constant */ | |
3917 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) | |
3918 #else | |
3919 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value; | |
3920 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name; | |
3921 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value; | |
3922 #endif | |
113
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coleenp
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diff
changeset
|
3923 #ifdef _LP64 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3924 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) type name = value; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3925 #else |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3926 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) /* flag is constant */ |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3927 #endif // _LP64 |
0 | 3928 |
350
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
3929 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 | 3930 |
3931 RUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG) | |
1972 | 3932 |
4107
cd00eaeebef6
7117389: Add a framework for vendor-specific command line switch extensions to Hotspot
phh
parents:
4088
diff
changeset
|
3933 // Extensions |
cd00eaeebef6
7117389: Add a framework for vendor-specific command line switch extensions to Hotspot
phh
parents:
4088
diff
changeset
|
3934 |
cd00eaeebef6
7117389: Add a framework for vendor-specific command line switch extensions to Hotspot
phh
parents:
4088
diff
changeset
|
3935 #include "runtime/globals_ext.hpp" |
cd00eaeebef6
7117389: Add a framework for vendor-specific command line switch extensions to Hotspot
phh
parents:
4088
diff
changeset
|
3936 |
1972 | 3937 #endif // SHARE_VM_RUNTIME_GLOBALS_HPP |