Mercurial > hg > truffle
annotate src/share/vm/runtime/globals.hpp @ 6290:01d274503562
canonicalize reads and writes on null objects to deopts
author | Lukas Stadler <lukas.stadler@jku.at> |
---|---|
date | Tue, 28 Aug 2012 12:15:10 +0200 |
parents | 957c266d8bc5 |
children | c38f13903fdf |
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 // string type aliases used only in this file | |
194 typedef const char* ccstr; | |
195 typedef const char* ccstrlist; // represents string arguments which accumulate | |
196 | |
197 enum FlagValueOrigin { | |
198 DEFAULT = 0, | |
199 COMMAND_LINE = 1, | |
200 ENVIRON_VAR = 2, | |
201 CONFIG_FILE = 3, | |
202 MANAGEMENT = 4, | |
203 ERGONOMIC = 5, | |
204 ATTACH_ON_DEMAND = 6, | |
205 INTERNAL = 99 | |
206 }; | |
207 | |
208 struct Flag { | |
209 const char *type; | |
210 const char *name; | |
211 void* addr; | |
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212 |
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213 NOT_PRODUCT(const char *doc;) |
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214 |
0 | 215 const char *kind; |
216 FlagValueOrigin origin; | |
217 | |
218 // points to all Flags static array | |
219 static Flag *flags; | |
220 | |
221 // number of flags | |
222 static size_t numFlags; | |
223 | |
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224 static Flag* find_flag(char* name, size_t length, bool allow_locked = false); |
0 | 225 |
226 bool is_bool() const { return strcmp(type, "bool") == 0; } | |
227 bool get_bool() const { return *((bool*) addr); } | |
228 void set_bool(bool value) { *((bool*) addr) = value; } | |
229 | |
230 bool is_intx() const { return strcmp(type, "intx") == 0; } | |
231 intx get_intx() const { return *((intx*) addr); } | |
232 void set_intx(intx value) { *((intx*) addr) = value; } | |
233 | |
234 bool is_uintx() const { return strcmp(type, "uintx") == 0; } | |
235 uintx get_uintx() const { return *((uintx*) addr); } | |
236 void set_uintx(uintx value) { *((uintx*) addr) = value; } | |
237 | |
1064 | 238 bool is_uint64_t() const { return strcmp(type, "uint64_t") == 0; } |
239 uint64_t get_uint64_t() const { return *((uint64_t*) addr); } | |
240 void set_uint64_t(uint64_t value) { *((uint64_t*) addr) = value; } | |
241 | |
0 | 242 bool is_double() const { return strcmp(type, "double") == 0; } |
243 double get_double() const { return *((double*) addr); } | |
244 void set_double(double value) { *((double*) addr) = value; } | |
245 | |
246 bool is_ccstr() const { return strcmp(type, "ccstr") == 0 || strcmp(type, "ccstrlist") == 0; } | |
247 bool ccstr_accumulates() const { return strcmp(type, "ccstrlist") == 0; } | |
248 ccstr get_ccstr() const { return *((ccstr*) addr); } | |
249 void set_ccstr(ccstr value) { *((ccstr*) addr) = value; } | |
250 | |
251 bool is_unlocker() const; | |
252 bool is_unlocked() const; | |
253 bool is_writeable() const; | |
254 bool is_external() const; | |
255 | |
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256 bool is_unlocker_ext() const; |
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257 bool is_unlocked_ext() const; |
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258 bool is_writeable_ext() const; |
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259 bool is_external_ext() const; |
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260 |
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261 void get_locked_message(char*, int) const; |
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262 void get_locked_message_ext(char*, int) const; |
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263 |
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264 void print_on(outputStream* st, bool withComments = false ); |
0 | 265 void print_as_flag(outputStream* st); |
266 }; | |
267 | |
268 // debug flags control various aspects of the VM and are global accessible | |
269 | |
270 // use FlagSetting to temporarily change some debug flag | |
271 // e.g. FlagSetting fs(DebugThisAndThat, true); | |
272 // restored to previous value upon leaving scope | |
273 class FlagSetting { | |
274 bool val; | |
275 bool* flag; | |
276 public: | |
277 FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; } | |
278 ~FlagSetting() { *flag = val; } | |
279 }; | |
280 | |
281 | |
282 class CounterSetting { | |
283 intx* counter; | |
284 public: | |
285 CounterSetting(intx* cnt) { counter = cnt; (*counter)++; } | |
286 ~CounterSetting() { (*counter)--; } | |
287 }; | |
288 | |
289 | |
290 class IntFlagSetting { | |
291 intx val; | |
292 intx* flag; | |
293 public: | |
294 IntFlagSetting(intx& fl, intx newValue) { flag = &fl; val = fl; fl = newValue; } | |
295 ~IntFlagSetting() { *flag = val; } | |
296 }; | |
297 | |
298 | |
299 class DoubleFlagSetting { | |
300 double val; | |
301 double* flag; | |
302 public: | |
303 DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; } | |
304 ~DoubleFlagSetting() { *flag = val; } | |
305 }; | |
306 | |
307 | |
308 class CommandLineFlags { | |
309 public: | |
310 static bool boolAt(char* name, size_t len, bool* value); | |
311 static bool boolAt(char* name, bool* value) { return boolAt(name, strlen(name), value); } | |
312 static bool boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin); | |
313 static bool boolAtPut(char* name, bool* value, FlagValueOrigin origin) { return boolAtPut(name, strlen(name), value, origin); } | |
314 | |
315 static bool intxAt(char* name, size_t len, intx* value); | |
316 static bool intxAt(char* name, intx* value) { return intxAt(name, strlen(name), value); } | |
317 static bool intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin); | |
318 static bool intxAtPut(char* name, intx* value, FlagValueOrigin origin) { return intxAtPut(name, strlen(name), value, origin); } | |
319 | |
320 static bool uintxAt(char* name, size_t len, uintx* value); | |
321 static bool uintxAt(char* name, uintx* value) { return uintxAt(name, strlen(name), value); } | |
322 static bool uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin); | |
323 static bool uintxAtPut(char* name, uintx* value, FlagValueOrigin origin) { return uintxAtPut(name, strlen(name), value, origin); } | |
324 | |
1064 | 325 static bool uint64_tAt(char* name, size_t len, uint64_t* value); |
326 static bool uint64_tAt(char* name, uint64_t* value) { return uint64_tAt(name, strlen(name), value); } | |
327 static bool uint64_tAtPut(char* name, size_t len, uint64_t* value, FlagValueOrigin origin); | |
328 static bool uint64_tAtPut(char* name, uint64_t* value, FlagValueOrigin origin) { return uint64_tAtPut(name, strlen(name), value, origin); } | |
329 | |
0 | 330 static bool doubleAt(char* name, size_t len, double* value); |
331 static bool doubleAt(char* name, double* value) { return doubleAt(name, strlen(name), value); } | |
332 static bool doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin); | |
333 static bool doubleAtPut(char* name, double* value, FlagValueOrigin origin) { return doubleAtPut(name, strlen(name), value, origin); } | |
334 | |
335 static bool ccstrAt(char* name, size_t len, ccstr* value); | |
336 static bool ccstrAt(char* name, ccstr* value) { return ccstrAt(name, strlen(name), value); } | |
337 static bool ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin); | |
338 static bool ccstrAtPut(char* name, ccstr* value, FlagValueOrigin origin) { return ccstrAtPut(name, strlen(name), value, origin); } | |
339 | |
340 // Returns false if name is not a command line flag. | |
341 static bool wasSetOnCmdline(const char* name, bool* value); | |
4773 | 342 static void printSetFlags(outputStream* out); |
0 | 343 |
4773 | 344 static void printFlags(outputStream* out, bool withComments); |
0 | 345 |
346 static void verify() PRODUCT_RETURN; | |
347 }; | |
348 | |
349 // use this for flags that are true by default in the debug version but | |
350 // false in the optimized version, and vice versa | |
351 #ifdef ASSERT | |
352 #define trueInDebug true | |
353 #define falseInDebug false | |
354 #else | |
355 #define trueInDebug false | |
356 #define falseInDebug true | |
357 #endif | |
358 | |
359 // use this for flags that are true per default in the product build | |
360 // but false in development builds, and vice versa | |
361 #ifdef PRODUCT | |
362 #define trueInProduct true | |
363 #define falseInProduct false | |
364 #else | |
365 #define trueInProduct false | |
366 #define falseInProduct true | |
367 #endif | |
368 | |
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369 #ifdef JAVASE_EMBEDDED |
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370 #define falseInEmbedded false |
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371 #else |
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372 #define falseInEmbedded true |
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373 #endif |
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374 |
0 | 375 // develop flags are settable / visible only during development and are constant in the PRODUCT version |
376 // product flags are always settable / visible | |
377 // notproduct flags are settable / visible only during development and are not declared in the PRODUCT version | |
378 | |
379 // A flag must be declared with one of the following types: | |
380 // bool, intx, uintx, ccstr. | |
381 // The type "ccstr" is an alias for "const char*" and is used | |
382 // only in this file, because the macrology requires single-token type names. | |
383 | |
384 // Note: Diagnostic options not meant for VM tuning or for product modes. | |
385 // They are to be used for VM quality assurance or field diagnosis | |
386 // of VM bugs. They are hidden so that users will not be encouraged to | |
387 // try them as if they were VM ordinary execution options. However, they | |
388 // are available in the product version of the VM. Under instruction | |
389 // from support engineers, VM customers can turn them on to collect | |
390 // diagnostic information about VM problems. To use a VM diagnostic | |
391 // option, you must first specify +UnlockDiagnosticVMOptions. | |
392 // (This master switch also affects the behavior of -Xprintflags.) | |
350
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393 // |
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394 // experimental flags are in support of features that are not |
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395 // part of the officially supported product, but are available |
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396 // for experimenting with. They could, for example, be performance |
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397 // features that may not have undergone full or rigorous QA, but which may |
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398 // help performance in some cases and released for experimentation |
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399 // by the community of users and developers. This flag also allows one to |
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400 // be able to build a fully supported product that nonetheless also |
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401 // ships with some unsupported, lightly tested, experimental features. |
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402 // Like the UnlockDiagnosticVMOptions flag above, there is a corresponding |
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403 // UnlockExperimentalVMOptions flag, which allows the control and |
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404 // modification of the experimental flags. |
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405 // |
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406 // Nota bene: neither diagnostic nor experimental options should be used casually, |
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407 // and they are not supported on production loads, except under explicit |
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408 // direction from support engineers. |
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409 // |
0 | 410 // manageable flags are writeable external product flags. |
411 // They are dynamically writeable through the JDK management interface | |
412 // (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole. | |
413 // These flags are external exported interface (see CCC). The list of | |
414 // manageable flags can be queried programmatically through the management | |
415 // interface. | |
416 // | |
417 // A flag can be made as "manageable" only if | |
418 // - the flag is defined in a CCC as an external exported interface. | |
419 // - the VM implementation supports dynamic setting of the flag. | |
420 // This implies that the VM must *always* query the flag variable | |
421 // and not reuse state related to the flag state at any given time. | |
422 // - you want the flag to be queried programmatically by the customers. | |
423 // | |
424 // product_rw flags are writeable internal product flags. | |
425 // They are like "manageable" flags but for internal/private use. | |
426 // The list of product_rw flags are internal/private flags which | |
427 // may be changed/removed in a future release. It can be set | |
428 // through the management interface to get/set value | |
429 // when the name of flag is supplied. | |
430 // | |
431 // A flag can be made as "product_rw" only if | |
432 // - the VM implementation supports dynamic setting of the flag. | |
433 // This implies that the VM must *always* query the flag variable | |
434 // and not reuse state related to the flag state at any given time. | |
435 // | |
436 // Note that when there is a need to support develop flags to be writeable, | |
437 // it can be done in the same way as product_rw. | |
438 | |
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439 #define RUNTIME_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw, lp64_product) \ |
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440 \ |
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441 lp64_product(bool, UseCompressedOops, false, \ |
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442 "Use 32-bit object references in 64-bit VM. " \ |
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443 "lp64_product means flag is always constant in 32 bit VM") \ |
0 | 444 \ |
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445 notproduct(bool, CheckCompressedOops, true, \ |
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446 "generate checks in encoding/decoding code in debug VM") \ |
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447 \ |
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448 product_pd(uintx, HeapBaseMinAddress, \ |
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449 "OS specific low limit for heap base address") \ |
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450 \ |
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451 diagnostic(bool, PrintCompressedOopsMode, false, \ |
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452 "Print compressed oops base address and encoding mode") \ |
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453 \ |
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454 lp64_product(intx, ObjectAlignmentInBytes, 8, \ |
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455 "Default object alignment in bytes, 8 is minimum") \ |
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456 \ |
0 | 457 /* UseMembar is theoretically a temp flag used for memory barrier \ |
458 * removal testing. It was supposed to be removed before FCS but has \ | |
459 * been re-added (see 6401008) */ \ | |
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460 product_pd(bool, UseMembar, \ |
0 | 461 "(Unstable) Issues membars on thread state transitions") \ |
462 \ | |
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463 /* Temp PPC Flag to allow disabling the use of lwsync on ppc platforms \ |
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464 * that don't support it. This will be replaced by processor detection \ |
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465 * logic. \ |
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466 */ \ |
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467 product(bool, UsePPCLWSYNC, true, \ |
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468 "Use lwsync instruction if true, else use slower sync") \ |
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469 \ |
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470 develop(bool, CleanChunkPoolAsync, falseInEmbedded, \ |
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471 "Whether to clean the chunk pool asynchronously") \ |
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472 \ |
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473 /* Temporary: See 6948537 */ \ |
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474 experimental(bool, UseMemSetInBOT, true, \ |
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475 "(Unstable) uses memset in BOT updates in GC code") \ |
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476 \ |
0 | 477 diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \ |
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478 "Enable normal processing of flags relating to field diagnostics")\ |
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479 \ |
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480 experimental(bool, UnlockExperimentalVMOptions, false, \ |
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481 "Enable normal processing of flags relating to experimental features")\ |
0 | 482 \ |
483 product(bool, JavaMonitorsInStackTrace, true, \ | |
484 "Print info. about Java monitor locks when the stacks are dumped")\ | |
485 \ | |
486 product_pd(bool, UseLargePages, \ | |
487 "Use large page memory") \ | |
488 \ | |
389
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489 product_pd(bool, UseLargePagesIndividualAllocation, \ |
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490 "Allocate large pages individually for better affinity") \ |
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491 \ |
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492 develop(bool, LargePagesIndividualAllocationInjectError, false, \ |
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493 "Fail large pages individual allocation") \ |
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494 \ |
0 | 495 develop(bool, TracePageSizes, false, \ |
496 "Trace page size selection and usage.") \ | |
497 \ | |
498 product(bool, UseNUMA, false, \ | |
499 "Use NUMA if available") \ | |
500 \ | |
3885 | 501 product(bool, UseNUMAInterleaving, false, \ |
502 "Interleave memory across NUMA nodes if available") \ | |
503 \ | |
504 product(uintx, NUMAInterleaveGranularity, 2*M, \ | |
505 "Granularity to use for NUMA interleaving on Windows OS") \ | |
506 \ | |
462
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507 product(bool, ForceNUMA, false, \ |
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508 "Force NUMA optimizations on single-node/UMA systems") \ |
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509 \ |
0 | 510 product(intx, NUMAChunkResizeWeight, 20, \ |
511 "Percentage (0-100) used to weight the current sample when " \ | |
512 "computing exponentially decaying average for " \ | |
513 "AdaptiveNUMAChunkSizing") \ | |
514 \ | |
515 product(intx, NUMASpaceResizeRate, 1*G, \ | |
516 "Do not reallocate more that this amount per collection") \ | |
517 \ | |
518 product(bool, UseAdaptiveNUMAChunkSizing, true, \ | |
519 "Enable adaptive chunk sizing for NUMA") \ | |
520 \ | |
521 product(bool, NUMAStats, false, \ | |
522 "Print NUMA stats in detailed heap information") \ | |
523 \ | |
524 product(intx, NUMAPageScanRate, 256, \ | |
525 "Maximum number of pages to include in the page scan procedure") \ | |
526 \ | |
527 product_pd(bool, NeedsDeoptSuspend, \ | |
528 "True for register window machines (sparc/ia64)") \ | |
529 \ | |
530 product(intx, UseSSE, 99, \ | |
531 "Highest supported SSE instructions set on x86/x64") \ | |
532 \ | |
4759 | 533 product(intx, UseAVX, 99, \ |
534 "Highest supported AVX instructions set on x86/x64") \ | |
535 \ | |
3804 | 536 product(intx, UseVIS, 99, \ |
537 "Highest supported VIS instructions set on Sparc") \ | |
538 \ | |
0 | 539 product(uintx, LargePageSizeInBytes, 0, \ |
540 "Large page size (0 to let VM choose the page size") \ | |
541 \ | |
542 product(uintx, LargePageHeapSizeThreshold, 128*M, \ | |
543 "Use large pages if max heap is at least this big") \ | |
544 \ | |
545 product(bool, ForceTimeHighResolution, false, \ | |
546 "Using high time resolution(For Win32 only)") \ | |
547 \ | |
548 develop(bool, TraceItables, false, \ | |
549 "Trace initialization and use of itables") \ | |
550 \ | |
551 develop(bool, TracePcPatching, false, \ | |
552 "Trace usage of frame::patch_pc") \ | |
553 \ | |
554 develop(bool, TraceJumps, false, \ | |
555 "Trace assembly jumps in thread ring buffer") \ | |
556 \ | |
557 develop(bool, TraceRelocator, false, \ | |
558 "Trace the bytecode relocator") \ | |
559 \ | |
560 develop(bool, TraceLongCompiles, false, \ | |
561 "Print out every time compilation is longer than " \ | |
562 "a given threashold") \ | |
563 \ | |
564 develop(bool, SafepointALot, false, \ | |
565 "Generates a lot of safepoints. Works with " \ | |
566 "GuaranteedSafepointInterval") \ | |
567 \ | |
568 product_pd(bool, BackgroundCompilation, \ | |
569 "A thread requesting compilation is not blocked during " \ | |
570 "compilation") \ | |
571 \ | |
572 product(bool, PrintVMQWaitTime, false, \ | |
573 "Prints out the waiting time in VM operation queue") \ | |
574 \ | |
575 develop(bool, BailoutToInterpreterForThrows, false, \ | |
576 "Compiled methods which throws/catches exceptions will be " \ | |
577 "deopt and intp.") \ | |
578 \ | |
579 develop(bool, NoYieldsInMicrolock, false, \ | |
580 "Disable yields in microlock") \ | |
581 \ | |
582 develop(bool, TraceOopMapGeneration, false, \ | |
583 "Shows oopmap generation") \ | |
584 \ | |
585 product(bool, MethodFlushing, true, \ | |
586 "Reclamation of zombie and not-entrant methods") \ | |
587 \ | |
588 develop(bool, VerifyStack, false, \ | |
589 "Verify stack of each thread when it is entering a runtime call") \ | |
590 \ | |
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591 diagnostic(bool, ForceUnreachable, false, \ |
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592 "Make all non code cache addresses to be unreachable with forcing use of 64bit literal fixups") \ |
0 | 593 \ |
594 notproduct(bool, StressDerivedPointers, false, \ | |
595 "Force scavenge when a derived pointers is detected on stack " \ | |
596 "after rtm call") \ | |
597 \ | |
598 develop(bool, TraceDerivedPointers, false, \ | |
599 "Trace traversal of derived pointers on stack") \ | |
600 \ | |
601 notproduct(bool, TraceCodeBlobStacks, false, \ | |
602 "Trace stack-walk of codeblobs") \ | |
603 \ | |
604 product(bool, PrintJNIResolving, false, \ | |
605 "Used to implement -v:jni") \ | |
606 \ | |
607 notproduct(bool, PrintRewrites, false, \ | |
608 "Print methods that are being rewritten") \ | |
609 \ | |
610 product(bool, UseInlineCaches, true, \ | |
611 "Use Inline Caches for virtual calls ") \ | |
612 \ | |
613 develop(bool, InlineArrayCopy, true, \ | |
614 "inline arraycopy native that is known to be part of " \ | |
615 "base library DLL") \ | |
616 \ | |
617 develop(bool, InlineObjectHash, true, \ | |
618 "inline Object::hashCode() native that is known to be part " \ | |
619 "of base library DLL") \ | |
620 \ | |
621 develop(bool, InlineObjectCopy, true, \ | |
622 "inline Object.clone and Arrays.copyOf[Range] intrinsics") \ | |
623 \ | |
624 develop(bool, InlineNatives, true, \ | |
625 "inline natives that are known to be part of base library DLL") \ | |
626 \ | |
627 develop(bool, InlineMathNatives, true, \ | |
628 "inline SinD, CosD, etc.") \ | |
629 \ | |
630 develop(bool, InlineClassNatives, true, \ | |
631 "inline Class.isInstance, etc") \ | |
632 \ | |
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633 product(ccstr, HighLevelInterpreterClass, NULL, \ |
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634 "fully qualified class name of the high-level interpreter") \ |
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635 \ |
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636 product(ccstr, HighLevelInterpreterArguments, NULL, \ |
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637 "arguments that are passed to the high-level interpreter") \ |
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638 \ |
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639 notproduct(bool, PrintHighLevelInterpreterVMTransitions, false, \ |
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640 "print transitions between VM and high-level interpreter") \ |
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641 \ |
0 | 642 develop(bool, InlineThreadNatives, true, \ |
643 "inline Thread.currentThread, etc") \ | |
644 \ | |
645 develop(bool, InlineReflectionGetCallerClass, true, \ | |
646 "inline sun.reflect.Reflection.getCallerClass(), known to be part "\ | |
647 "of base library DLL") \ | |
648 \ | |
649 develop(bool, InlineUnsafeOps, true, \ | |
650 "inline memory ops (native methods) from sun.misc.Unsafe") \ | |
651 \ | |
652 develop(bool, ConvertCmpD2CmpF, true, \ | |
653 "Convert cmpD to cmpF when one input is constant in float range") \ | |
654 \ | |
655 develop(bool, ConvertFloat2IntClipping, true, \ | |
656 "Convert float2int clipping idiom to integer clipping") \ | |
657 \ | |
658 develop(bool, SpecialStringCompareTo, true, \ | |
659 "special version of string compareTo") \ | |
660 \ | |
661 develop(bool, SpecialStringIndexOf, true, \ | |
662 "special version of string indexOf") \ | |
663 \ | |
681 | 664 develop(bool, SpecialStringEquals, true, \ |
665 "special version of string equals") \ | |
666 \ | |
667 develop(bool, SpecialArraysEquals, true, \ | |
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668 "special version of Arrays.equals(char[],char[])") \ |
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669 \ |
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670 product(bool, CriticalJNINatives, true, \ |
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671 "check for critical JNI entry points") \ |
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672 \ |
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|
673 notproduct(bool, StressCriticalJNINatives, false, \ |
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parents:
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|
674 "Exercise register saving code in critical natives") \ |
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diff
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|
675 \ |
681 | 676 product(bool, UseSSE42Intrinsics, false, \ |
677 "SSE4.2 versions of intrinsics") \ | |
678 \ | |
3282 | 679 product(bool, UseCondCardMark, false, \ |
680 "Check for already marked card before updating card table") \ | |
681 \ | |
0 | 682 develop(bool, TraceCallFixup, false, \ |
683 "traces all call fixups") \ | |
684 \ | |
4688
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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diff
changeset
|
685 product(bool, DeoptimizeALot, false, \ |
0 | 686 "deoptimize at every exit from the runtime system") \ |
687 \ | |
434 | 688 notproduct(ccstrlist, DeoptimizeOnlyAt, "", \ |
0 | 689 "a comma separated list of bcis to deoptimize at") \ |
690 \ | |
691 product(bool, DeoptimizeRandom, false, \ | |
692 "deoptimize random frames on random exit from the runtime system")\ | |
693 \ | |
694 notproduct(bool, ZombieALot, false, \ | |
695 "creates zombies (non-entrant) at exit from the runt. system") \ | |
696 \ | |
2177
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2125
diff
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|
697 product(bool, UnlinkSymbolsALot, false, \ |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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diff
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|
698 "unlink unreferenced symbols from the symbol table at safepoints")\ |
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6990754: Use native memory and reference counting to implement SymbolTable
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|
699 \ |
0 | 700 notproduct(bool, WalkStackALot, false, \ |
701 "trace stack (no print) at every exit from the runtime system") \ | |
702 \ | |
4006 | 703 product(bool, Debugging, false, \ |
0 | 704 "set when executing debug methods in debug.ccp " \ |
705 "(to prevent triggering assertions)") \ | |
706 \ | |
707 notproduct(bool, StrictSafepointChecks, trueInDebug, \ | |
708 "Enable strict checks that safepoints cannot happen for threads " \ | |
709 "that used No_Safepoint_Verifier") \ | |
710 \ | |
711 notproduct(bool, VerifyLastFrame, false, \ | |
712 "Verify oops on last frame on entry to VM") \ | |
713 \ | |
714 develop(bool, TraceHandleAllocation, false, \ | |
715 "Prints out warnings when suspicious many handles are allocated") \ | |
716 \ | |
717 product(bool, UseCompilerSafepoints, true, \ | |
718 "Stop at safepoints in compiled code") \ | |
719 \ | |
720 product(bool, UseSplitVerifier, true, \ | |
721 "use split verifier with StackMapTable attributes") \ | |
722 \ | |
723 product(bool, FailOverToOldVerifier, true, \ | |
724 "fail over to old verifier when split verifier fails") \ | |
725 \ | |
726 develop(bool, ShowSafepointMsgs, false, \ | |
727 "Show msg. about safepoint synch.") \ | |
728 \ | |
729 product(bool, SafepointTimeout, false, \ | |
730 "Time out and warn or fail after SafepointTimeoutDelay " \ | |
731 "milliseconds if failed to reach safepoint") \ | |
732 \ | |
733 develop(bool, DieOnSafepointTimeout, false, \ | |
734 "Die upon failure to reach safepoint (see SafepointTimeout)") \ | |
735 \ | |
736 /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \ | |
737 /* typically, at most a few retries are needed */ \ | |
738 product(intx, SuspendRetryCount, 50, \ | |
739 "Maximum retry count for an external suspend request") \ | |
740 \ | |
741 product(intx, SuspendRetryDelay, 5, \ | |
742 "Milliseconds to delay per retry (* current_retry_count)") \ | |
743 \ | |
744 product(bool, AssertOnSuspendWaitFailure, false, \ | |
745 "Assert/Guarantee on external suspend wait failure") \ | |
746 \ | |
747 product(bool, TraceSuspendWaitFailures, false, \ | |
748 "Trace external suspend wait failures") \ | |
749 \ | |
750 product(bool, MaxFDLimit, true, \ | |
751 "Bump the number of file descriptors to max in solaris.") \ | |
752 \ | |
4872
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7141200: log some interesting information in ring buffers for crashes
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diff
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|
753 diagnostic(bool, LogEvents, true, \ |
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
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diff
changeset
|
754 "Enable the various ring buffer event logs") \ |
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4868
diff
changeset
|
755 \ |
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
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parents:
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diff
changeset
|
756 diagnostic(intx, LogEventsBufferEntries, 10, \ |
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
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parents:
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diff
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|
757 "Enable the various ring buffer event logs") \ |
0 | 758 \ |
759 product(bool, BytecodeVerificationRemote, true, \ | |
760 "Enables the Java bytecode verifier for remote classes") \ | |
761 \ | |
762 product(bool, BytecodeVerificationLocal, false, \ | |
763 "Enables the Java bytecode verifier for local classes") \ | |
764 \ | |
765 develop(bool, ForceFloatExceptions, trueInDebug, \ | |
766 "Force exceptions on FP stack under/overflow") \ | |
767 \ | |
768 develop(bool, SoftMatchFailure, trueInProduct, \ | |
769 "If the DFA fails to match a node, print a message and bail out") \ | |
770 \ | |
771 develop(bool, VerifyStackAtCalls, false, \ | |
772 "Verify that the stack pointer is unchanged after calls") \ | |
773 \ | |
774 develop(bool, TraceJavaAssertions, false, \ | |
775 "Trace java language assertions") \ | |
776 \ | |
777 notproduct(bool, CheckAssertionStatusDirectives, false, \ | |
778 "temporary - see javaClasses.cpp") \ | |
779 \ | |
780 notproduct(bool, PrintMallocFree, false, \ | |
781 "Trace calls to C heap malloc/free allocation") \ | |
782 \ | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
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diff
changeset
|
783 product(bool, PrintOopAddress, false, \ |
0 | 784 "Always print the location of the oop") \ |
785 \ | |
786 notproduct(bool, VerifyCodeCacheOften, false, \ | |
787 "Verify compiled-code cache often") \ | |
788 \ | |
789 develop(bool, ZapDeadCompiledLocals, false, \ | |
790 "Zap dead locals in compiler frames") \ | |
791 \ | |
792 notproduct(bool, ZapDeadLocalsOld, false, \ | |
793 "Zap dead locals (old version, zaps all frames when " \ | |
794 "entering the VM") \ | |
795 \ | |
796 notproduct(bool, CheckOopishValues, false, \ | |
797 "Warn if value contains oop ( requires ZapDeadLocals)") \ | |
798 \ | |
799 develop(bool, UseMallocOnly, false, \ | |
800 "use only malloc/free for allocation (no resource area/arena)") \ | |
801 \ | |
802 develop(bool, PrintMalloc, false, \ | |
803 "print all malloc/free calls") \ | |
804 \ | |
2250 | 805 develop(bool, PrintMallocStatistics, false, \ |
806 "print malloc/free statistics") \ | |
807 \ | |
0 | 808 develop(bool, ZapResourceArea, trueInDebug, \ |
809 "Zap freed resource/arena space with 0xABABABAB") \ | |
810 \ | |
811 notproduct(bool, ZapVMHandleArea, trueInDebug, \ | |
812 "Zap freed VM handle space with 0xBCBCBCBC") \ | |
813 \ | |
814 develop(bool, ZapJNIHandleArea, trueInDebug, \ | |
815 "Zap freed JNI handle space with 0xFEFEFEFE") \ | |
816 \ | |
1836
894b1d7c7e01
6423256: GC stacks should use a better data structure
jcoomes
parents:
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diff
changeset
|
817 notproduct(bool, ZapStackSegments, trueInDebug, \ |
894b1d7c7e01
6423256: GC stacks should use a better data structure
jcoomes
parents:
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diff
changeset
|
818 "Zap allocated/freed Stack segments with 0xFADFADED") \ |
894b1d7c7e01
6423256: GC stacks should use a better data structure
jcoomes
parents:
1778
diff
changeset
|
819 \ |
263
12eea04c8b06
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
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diff
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|
820 develop(bool, ZapUnusedHeapArea, trueInDebug, \ |
0 | 821 "Zap unused heap space with 0xBAADBABE") \ |
822 \ | |
263
12eea04c8b06
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jmasa
parents:
219
diff
changeset
|
823 develop(bool, TraceZapUnusedHeapArea, false, \ |
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6672698: mangle_unused_area() should not remangle the entire heap at each collection.
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parents:
219
diff
changeset
|
824 "Trace zapping of unused heap space") \ |
12eea04c8b06
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
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diff
changeset
|
825 \ |
12eea04c8b06
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
219
diff
changeset
|
826 develop(bool, CheckZapUnusedHeapArea, false, \ |
12eea04c8b06
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
219
diff
changeset
|
827 "Check zapping of unused heap space") \ |
12eea04c8b06
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
219
diff
changeset
|
828 \ |
481
7d7a7c599c17
6578152: fill_region_with_object has usability and safety issues
jcoomes
parents:
462
diff
changeset
|
829 develop(bool, ZapFillerObjects, trueInDebug, \ |
7d7a7c599c17
6578152: fill_region_with_object has usability and safety issues
jcoomes
parents:
462
diff
changeset
|
830 "Zap filler objects with 0xDEAFBABE") \ |
7d7a7c599c17
6578152: fill_region_with_object has usability and safety issues
jcoomes
parents:
462
diff
changeset
|
831 \ |
0 | 832 develop(bool, PrintVMMessages, true, \ |
833 "Print vm messages on console") \ | |
834 \ | |
835 product(bool, PrintGCApplicationConcurrentTime, false, \ | |
836 "Print the time the application has been running") \ | |
837 \ | |
838 product(bool, PrintGCApplicationStoppedTime, false, \ | |
839 "Print the time the application has been stopped") \ | |
840 \ | |
1490
f03d0a26bf83
6888954: argument formatting for assert() and friends
jcoomes
parents:
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diff
changeset
|
841 notproduct(uintx, ErrorHandlerTest, 0, \ |
f03d0a26bf83
6888954: argument formatting for assert() and friends
jcoomes
parents:
1367
diff
changeset
|
842 "If > 0, provokes an error after VM initialization; the value" \ |
f03d0a26bf83
6888954: argument formatting for assert() and friends
jcoomes
parents:
1367
diff
changeset
|
843 "determines which error to provoke. See test_error_handler()" \ |
f03d0a26bf83
6888954: argument formatting for assert() and friends
jcoomes
parents:
1367
diff
changeset
|
844 "in debug.cpp.") \ |
f03d0a26bf83
6888954: argument formatting for assert() and friends
jcoomes
parents:
1367
diff
changeset
|
845 \ |
0 | 846 develop(bool, Verbose, false, \ |
847 "Prints additional debugging information from other modes") \ | |
848 \ | |
849 develop(bool, PrintMiscellaneous, false, \ | |
850 "Prints uncategorized debugging information (requires +Verbose)") \ | |
851 \ | |
852 develop(bool, WizardMode, false, \ | |
853 "Prints much more debugging information") \ | |
854 \ | |
855 product(bool, ShowMessageBoxOnError, false, \ | |
856 "Keep process alive on VM fatal error") \ | |
857 \ | |
2204
63d374c54045
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
2199
diff
changeset
|
858 product(bool, CreateMinidumpOnCrash, false, \ |
63d374c54045
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
2199
diff
changeset
|
859 "Create minidump on VM fatal error") \ |
63d374c54045
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
2199
diff
changeset
|
860 \ |
0 | 861 product_pd(bool, UseOSErrorReporting, \ |
862 "Let VM fatal error propagate to the OS (ie. WER on Windows)") \ | |
863 \ | |
864 product(bool, SuppressFatalErrorMessage, false, \ | |
865 "Do NO Fatal Error report [Avoid deadlock]") \ | |
866 \ | |
867 product(ccstrlist, OnError, "", \ | |
868 "Run user-defined commands on fatal error; see VMError.cpp " \ | |
869 "for examples") \ | |
870 \ | |
871 product(ccstrlist, OnOutOfMemoryError, "", \ | |
872 "Run user-defined commands on first java.lang.OutOfMemoryError") \ | |
873 \ | |
615
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
874 manageable(bool, HeapDumpBeforeFullGC, false, \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
875 "Dump heap to file before any major stop-world GC") \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
876 \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
877 manageable(bool, HeapDumpAfterFullGC, false, \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
878 "Dump heap to file after any major stop-world GC") \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
879 \ |
0 | 880 manageable(bool, HeapDumpOnOutOfMemoryError, false, \ |
881 "Dump heap to file when java.lang.OutOfMemoryError is thrown") \ | |
882 \ | |
883 manageable(ccstr, HeapDumpPath, NULL, \ | |
884 "When HeapDumpOnOutOfMemoryError is on, the path (filename or" \ | |
885 "directory) of the dump file (defaults to java_pid<pid>.hprof" \ | |
886 "in the working directory)") \ | |
887 \ | |
888 develop(uintx, SegmentedHeapDumpThreshold, 2*G, \ | |
889 "Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) " \ | |
890 "when the heap usage is larger than this") \ | |
891 \ | |
892 develop(uintx, HeapDumpSegmentSize, 1*G, \ | |
893 "Approximate segment size when generating a segmented heap dump") \ | |
894 \ | |
895 develop(bool, BreakAtWarning, false, \ | |
896 "Execute breakpoint upon encountering VM warning") \ | |
897 \ | |
898 product_pd(bool, UseVectoredExceptions, \ | |
899 "Temp Flag - Use Vectored Exceptions rather than SEH (Windows Only)") \ | |
900 \ | |
901 develop(bool, TraceVMOperation, false, \ | |
902 "Trace vm operations") \ | |
903 \ | |
904 develop(bool, UseFakeTimers, false, \ | |
905 "Tells whether the VM should use system time or a fake timer") \ | |
906 \ | |
6197 | 907 product(ccstr, NativeMemoryTracking, "off", \ |
908 "Native memory tracking options") \ | |
909 \ | |
0 | 910 diagnostic(bool, LogCompilation, false, \ |
911 "Log compilation activity in detail to hotspot.log or LogFile") \ | |
912 \ | |
913 product(bool, PrintCompilation, false, \ | |
914 "Print compilations") \ | |
915 \ | |
916 diagnostic(bool, TraceNMethodInstalls, false, \ | |
917 "Trace nmethod intallation") \ | |
918 \ | |
4119
7793051af7d6
7110058: change default for ScavengeRootsInCode to 2
twisti
parents:
4065
diff
changeset
|
919 diagnostic(intx, ScavengeRootsInCode, 2, \ |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
910
diff
changeset
|
920 "0: do not allow scavengable oops in the code cache; " \ |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
910
diff
changeset
|
921 "1: allow scavenging from the code cache; " \ |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
910
diff
changeset
|
922 "2: emit as many constants as the compiler can see") \ |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
910
diff
changeset
|
923 \ |
0 | 924 diagnostic(bool, TraceOSRBreakpoint, false, \ |
925 "Trace OSR Breakpoint ") \ | |
926 \ | |
927 diagnostic(bool, TraceCompileTriggered, false, \ | |
928 "Trace compile triggered") \ | |
929 \ | |
930 diagnostic(bool, TraceTriggers, false, \ | |
931 "Trace triggers") \ | |
932 \ | |
933 product(bool, AlwaysRestoreFPU, false, \ | |
934 "Restore the FPU control word after every JNI call (expensive)") \ | |
935 \ | |
4064
670a74b863fc
7107042: assert(no_dead_loop) failed: dead loop detected
kvn
parents:
4059
diff
changeset
|
936 diagnostic(bool, PrintCompilation2, false, \ |
0 | 937 "Print additional statistics per compilation") \ |
938 \ | |
100
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parents:
76
diff
changeset
|
939 diagnostic(bool, PrintAdapterHandlers, false, \ |
0 | 940 "Print code generated for i2c/c2i adapters") \ |
941 \ | |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6199
diff
changeset
|
942 diagnostic(bool, VerifyAdapterCalls, trueInDebug, \ |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6199
diff
changeset
|
943 "Verify that i2c/c2i adapters are called properly") \ |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6199
diff
changeset
|
944 \ |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1206
diff
changeset
|
945 develop(bool, VerifyAdapterSharing, false, \ |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1206
diff
changeset
|
946 "Verify that the code for shared adapters is the equivalent") \ |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1206
diff
changeset
|
947 \ |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
76
diff
changeset
|
948 diagnostic(bool, PrintAssembly, false, \ |
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
76
diff
changeset
|
949 "Print assembly code (using external disassembler.so)") \ |
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
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diff
changeset
|
950 \ |
370
885fe0f95828
6744783: HotSpot segfaults if given -XX options with an empty string argument
never
parents:
325
diff
changeset
|
951 diagnostic(ccstr, PrintAssemblyOptions, NULL, \ |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
76
diff
changeset
|
952 "Options string passed to disassembler.so") \ |
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
76
diff
changeset
|
953 \ |
4561
35ca3ade314d
enabled nmethod statistics for product build
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4464
diff
changeset
|
954 product(bool, PrintNMethodStatistics, false, \ |
35ca3ade314d
enabled nmethod statistics for product build
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4464
diff
changeset
|
955 "Print a summary statistic for the generated nmethods") \ |
35ca3ade314d
enabled nmethod statistics for product build
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4464
diff
changeset
|
956 \ |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
76
diff
changeset
|
957 diagnostic(bool, PrintNMethods, false, \ |
0 | 958 "Print assembly code for nmethods when generated") \ |
959 \ | |
100
c7c777385a15
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jrose
parents:
76
diff
changeset
|
960 diagnostic(bool, PrintNativeNMethods, false, \ |
0 | 961 "Print assembly code for native nmethods when generated") \ |
962 \ | |
963 develop(bool, PrintDebugInfo, false, \ | |
964 "Print debug information for all nmethods when generated") \ | |
965 \ | |
966 develop(bool, PrintRelocations, false, \ | |
967 "Print relocation information for all nmethods when generated") \ | |
968 \ | |
969 develop(bool, PrintDependencies, false, \ | |
970 "Print dependency information for all nmethods when generated") \ | |
971 \ | |
972 develop(bool, PrintExceptionHandlers, false, \ | |
973 "Print exception handler tables for all nmethods when generated") \ | |
974 \ | |
975 develop(bool, InterceptOSException, false, \ | |
976 "Starts debugger when an implicit OS (e.g., NULL) " \ | |
977 "exception happens") \ | |
978 \ | |
979 notproduct(bool, PrintCodeCache, false, \ | |
980 "Print the compiled_code cache when exiting") \ | |
981 \ | |
982 develop(bool, PrintCodeCache2, false, \ | |
983 "Print detailed info on the compiled_code cache when exiting") \ | |
984 \ | |
100
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6667042: PrintAssembly option does not work without special plugin
jrose
parents:
76
diff
changeset
|
985 diagnostic(bool, PrintStubCode, false, \ |
0 | 986 "Print generated stub code") \ |
987 \ | |
988 product(bool, StackTraceInThrowable, true, \ | |
989 "Collect backtrace in throwable when exception happens") \ | |
990 \ | |
991 product(bool, OmitStackTraceInFastThrow, true, \ | |
992 "Omit backtraces for some 'hot' exceptions in optimized code") \ | |
993 \ | |
994 product(bool, ProfilerPrintByteCodeStatistics, false, \ | |
995 "Prints byte code statictics when dumping profiler output") \ | |
996 \ | |
997 product(bool, ProfilerRecordPC, false, \ | |
998 "Collects tick for each 16 byte interval of compiled code") \ | |
999 \ | |
1064 | 1000 product(bool, ProfileVM, false, \ |
0 | 1001 "Profiles ticks that fall within VM (either in the VM Thread " \ |
1002 "or VM code called through stubs)") \ | |
1003 \ | |
1004 product(bool, ProfileIntervals, false, \ | |
1005 "Prints profiles for each interval (see ProfileIntervalsTicks)") \ | |
1006 \ | |
1007 notproduct(bool, ProfilerCheckIntervals, false, \ | |
1008 "Collect and print info on spacing of profiler ticks") \ | |
1009 \ | |
1010 develop(bool, PrintJVMWarnings, false, \ | |
1011 "Prints warnings for unimplemented JVM functions") \ | |
1012 \ | |
1870
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1013 product(bool, PrintWarnings, true, \ |
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1014 "Prints JVM warnings to output stream") \ |
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1015 \ |
0 | 1016 notproduct(uintx, WarnOnStalledSpinLock, 0, \ |
1017 "Prints warnings for stalled SpinLocks") \ | |
1018 \ | |
1019 develop(bool, InitializeJavaLangSystem, true, \ | |
1020 "Initialize java.lang.System - turn off for individual " \ | |
1021 "method debugging") \ | |
1022 \ | |
1023 develop(bool, InitializeJavaLangString, true, \ | |
1024 "Initialize java.lang.String - turn off for individual " \ | |
1025 "method debugging") \ | |
1026 \ | |
1027 develop(bool, InitializeJavaLangExceptionsErrors, true, \ | |
1028 "Initialize various error and exception classes - turn off for " \ | |
1029 "individual method debugging") \ | |
1030 \ | |
1031 product(bool, RegisterFinalizersAtInit, true, \ | |
1032 "Register finalizable objects at end of Object.<init> or " \ | |
1064 | 1033 "after allocation") \ |
0 | 1034 \ |
1035 develop(bool, RegisterReferences, true, \ | |
1036 "Tells whether the VM should register soft/weak/final/phantom " \ | |
1037 "references") \ | |
1038 \ | |
1039 develop(bool, IgnoreRewrites, false, \ | |
1040 "Supress rewrites of bytecodes in the oopmap generator. " \ | |
1041 "This is unsafe!") \ | |
1042 \ | |
1043 develop(bool, PrintCodeCacheExtension, false, \ | |
1044 "Print extension of code cache") \ | |
1045 \ | |
1046 develop(bool, UsePrivilegedStack, true, \ | |
1047 "Enable the security JVM functions") \ | |
1048 \ | |
1049 develop(bool, IEEEPrecision, true, \ | |
1050 "Enables IEEE precision (for INTEL only)") \ | |
1051 \ | |
1052 develop(bool, ProtectionDomainVerification, true, \ | |
1053 "Verifies protection domain before resolution in system " \ | |
1054 "dictionary") \ | |
1055 \ | |
1056 product(bool, ClassUnloading, true, \ | |
1057 "Do unloading of classes") \ | |
1058 \ | |
474
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1059 diagnostic(bool, LinkWellKnownClasses, false, \ |
132
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1060 "Resolve a well known class as soon as its name is seen") \ |
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1061 \ |
0 | 1062 develop(bool, DisableStartThread, false, \ |
1063 "Disable starting of additional Java threads " \ | |
1064 "(for debugging only)") \ | |
1065 \ | |
1066 develop(bool, MemProfiling, false, \ | |
1067 "Write memory usage profiling to log file") \ | |
1068 \ | |
1069 notproduct(bool, PrintSystemDictionaryAtExit, false, \ | |
1070 "Prints the system dictionary at exit") \ | |
1071 \ | |
4864
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1072 experimental(intx, PredictedLoadedClassCount, 0, \ |
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1073 "Experimental: Tune loaded class cache starting size.") \ |
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|
1074 \ |
0 | 1075 diagnostic(bool, UnsyncloadClass, false, \ |
514 | 1076 "Unstable: VM calls loadClass unsynchronized. Custom " \ |
1077 "class loader must call VM synchronized for findClass " \ | |
1078 "and defineClass.") \ | |
1079 \ | |
1080 product(bool, AlwaysLockClassLoader, false, \ | |
1081 "Require the VM to acquire the class loader lock before calling " \ | |
1082 "loadClass() even for class loaders registering " \ | |
1064 | 1083 "as parallel capable") \ |
514 | 1084 \ |
1085 product(bool, AllowParallelDefineClass, false, \ | |
1086 "Allow parallel defineClass requests for class loaders " \ | |
1064 | 1087 "registering as parallel capable") \ |
514 | 1088 \ |
1089 product(bool, MustCallLoadClassInternal, false, \ | |
1064 | 1090 "Call loadClassInternal() rather than loadClass()") \ |
0 | 1091 \ |
1092 product_pd(bool, DontYieldALot, \ | |
1093 "Throw away obvious excess yield calls (for SOLARIS only)") \ | |
1094 \ | |
1095 product_pd(bool, ConvertSleepToYield, \ | |
1096 "Converts sleep(0) to thread yield " \ | |
1097 "(may be off for SOLARIS to improve GUI)") \ | |
1098 \ | |
1099 product(bool, ConvertYieldToSleep, false, \ | |
1100 "Converts yield to a sleep of MinSleepInterval to simulate Win32 "\ | |
1101 "behavior (SOLARIS only)") \ | |
1102 \ | |
1103 product(bool, UseBoundThreads, true, \ | |
1104 "Bind user level threads to kernel threads (for SOLARIS only)") \ | |
1105 \ | |
1106 develop(bool, UseDetachedThreads, true, \ | |
1107 "Use detached threads that are recycled upon termination " \ | |
1108 "(for SOLARIS only)") \ | |
1109 \ | |
1110 product(bool, UseLWPSynchronization, true, \ | |
1111 "Use LWP-based instead of libthread-based synchronization " \ | |
1112 "(SPARC only)") \ | |
1113 \ | |
370
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1114 product(ccstr, SyncKnobs, NULL, \ |
0 | 1115 "(Unstable) Various monitor synchronization tunables") \ |
1116 \ | |
1117 product(intx, EmitSync, 0, \ | |
1118 "(Unsafe,Unstable) " \ | |
1119 " Controls emission of inline sync fast-path code") \ | |
1120 \ | |
1121 product(intx, AlwaysInflate, 0, "(Unstable) Force inflation") \ | |
1122 \ | |
1587 | 1123 product(intx, MonitorBound, 0, "Bound Monitor population") \ |
1124 \ | |
1125 product(bool, MonitorInUseLists, false, "Track Monitors for Deflation") \ | |
1126 \ | |
0 | 1127 product(intx, Atomics, 0, \ |
1128 "(Unsafe,Unstable) Diagnostic - Controls emission of atomics") \ | |
1129 \ | |
1130 product(intx, FenceInstruction, 0, \ | |
1131 "(Unsafe,Unstable) Experimental") \ | |
1132 \ | |
1133 product(intx, SyncFlags, 0, "(Unsafe,Unstable) Experimental Sync flags" ) \ | |
1134 \ | |
1135 product(intx, SyncVerbose, 0, "(Unstable)" ) \ | |
1136 \ | |
1137 product(intx, ClearFPUAtPark, 0, "(Unsafe,Unstable)" ) \ | |
1138 \ | |
1139 product(intx, hashCode, 0, \ | |
1140 "(Unstable) select hashCode generation algorithm" ) \ | |
1141 \ | |
1142 product(intx, WorkAroundNPTLTimedWaitHang, 1, \ | |
1143 "(Unstable, Linux-specific)" \ | |
1144 " avoid NPTL-FUTEX hang pthread_cond_timedwait" ) \ | |
1145 \ | |
1064 | 1146 product(bool, FilterSpuriousWakeups, true, \ |
1147 "Prevent spurious or premature wakeups from object.wait " \ | |
1148 "(Solaris only)") \ | |
0 | 1149 \ |
1150 product(intx, NativeMonitorTimeout, -1, "(Unstable)" ) \ | |
1151 product(intx, NativeMonitorFlags, 0, "(Unstable)" ) \ | |
1152 product(intx, NativeMonitorSpinLimit, 20, "(Unstable)" ) \ | |
1153 \ | |
1154 develop(bool, UsePthreads, false, \ | |
1155 "Use pthread-based instead of libthread-based synchronization " \ | |
1156 "(SPARC only)") \ | |
1157 \ | |
1158 product(bool, AdjustConcurrency, false, \ | |
1159 "call thr_setconcurrency at thread create time to avoid " \ | |
1160 "LWP starvation on MP systems (For Solaris Only)") \ | |
1161 \ | |
1162 develop(bool, UpdateHotSpotCompilerFileOnError, true, \ | |
1163 "Should the system attempt to update the compiler file when " \ | |
1164 "an error occurs?") \ | |
1165 \ | |
1166 product(bool, ReduceSignalUsage, false, \ | |
1167 "Reduce the use of OS signals in Java and/or the VM") \ | |
1168 \ | |
1169 notproduct(bool, ValidateMarkSweep, false, \ | |
1170 "Do extra validation during MarkSweep collection") \ | |
1171 \ | |
1172 notproduct(bool, RecordMarkSweepCompaction, false, \ | |
1173 "Enable GC-to-GC recording and querying of compaction during " \ | |
1174 "MarkSweep") \ | |
1175 \ | |
1176 develop_pd(bool, ShareVtableStubs, \ | |
1177 "Share vtable stubs (smaller code but worse branch prediction") \ | |
1178 \ | |
1179 develop(bool, LoadLineNumberTables, true, \ | |
1180 "Tells whether the class file parser loads line number tables") \ | |
1181 \ | |
1182 develop(bool, LoadLocalVariableTables, true, \ | |
1183 "Tells whether the class file parser loads local variable tables")\ | |
1184 \ | |
1185 develop(bool, LoadLocalVariableTypeTables, true, \ | |
1186 "Tells whether the class file parser loads local variable type tables")\ | |
1187 \ | |
1188 product(bool, AllowUserSignalHandlers, false, \ | |
1189 "Do not complain if the application installs signal handlers " \ | |
1190 "(Solaris & Linux only)") \ | |
1191 \ | |
1192 product(bool, UseSignalChaining, true, \ | |
1193 "Use signal-chaining to invoke signal handlers installed " \ | |
1194 "by the application (Solaris & Linux only)") \ | |
1195 \ | |
1196 product(bool, UseAltSigs, false, \ | |
1197 "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \ | |
1064 | 1198 "internal signals (Solaris only)") \ |
0 | 1199 \ |
1200 product(bool, UseSpinning, false, \ | |
1201 "Use spinning in monitor inflation and before entry") \ | |
1202 \ | |
1203 product(bool, PreSpinYield, false, \ | |
1204 "Yield before inner spinning loop") \ | |
1205 \ | |
1206 product(bool, PostSpinYield, true, \ | |
1207 "Yield after inner spinning loop") \ | |
1208 \ | |
1209 product(bool, AllowJNIEnvProxy, false, \ | |
1210 "Allow JNIEnv proxies for jdbx") \ | |
1211 \ | |
1212 product(bool, JNIDetachReleasesMonitors, true, \ | |
1213 "JNI DetachCurrentThread releases monitors owned by thread") \ | |
1214 \ | |
1215 product(bool, RestoreMXCSROnJNICalls, false, \ | |
1216 "Restore MXCSR when returning from JNI calls") \ | |
1217 \ | |
1218 product(bool, CheckJNICalls, false, \ | |
1219 "Verify all arguments to JNI calls") \ | |
1220 \ | |
1221 product(bool, UseFastJNIAccessors, true, \ | |
1222 "Use optimized versions of Get<Primitive>Field") \ | |
1223 \ | |
1224 product(bool, EagerXrunInit, false, \ | |
1225 "Eagerly initialize -Xrun libraries; allows startup profiling, " \ | |
1226 " but not all -Xrun libraries may support the state of the VM at this time") \ | |
1227 \ | |
1228 product(bool, PreserveAllAnnotations, false, \ | |
1229 "Preserve RuntimeInvisibleAnnotations as well as RuntimeVisibleAnnotations") \ | |
1230 \ | |
1231 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \ | |
1232 "Number of OutOfMemoryErrors preallocated with backtrace") \ | |
1233 \ | |
1234 product(bool, LazyBootClassLoader, true, \ | |
1235 "Enable/disable lazy opening of boot class path entries") \ | |
1236 \ | |
1237 diagnostic(bool, UseIncDec, true, \ | |
1238 "Use INC, DEC instructions on x86") \ | |
1239 \ | |
219 | 1240 product(bool, UseNewLongLShift, false, \ |
1241 "Use optimized bitwise shift left") \ | |
1242 \ | |
0 | 1243 product(bool, UseStoreImmI16, true, \ |
1244 "Use store immediate 16-bits value instruction on x86") \ | |
1245 \ | |
1246 product(bool, UseAddressNop, false, \ | |
1247 "Use '0F 1F [addr]' NOP instructions on x86 cpus") \ | |
1248 \ | |
1249 product(bool, UseXmmLoadAndClearUpper, true, \ | |
1250 "Load low part of XMM register and clear upper part") \ | |
1251 \ | |
1252 product(bool, UseXmmRegToRegMoveAll, false, \ | |
1253 "Copy all XMM register bits when moving value between registers") \ | |
1254 \ | |
71 | 1255 product(bool, UseXmmI2D, false, \ |
1256 "Use SSE2 CVTDQ2PD instruction to convert Integer to Double") \ | |
1257 \ | |
1258 product(bool, UseXmmI2F, false, \ | |
1259 "Use SSE2 CVTDQ2PS instruction to convert Integer to Float") \ | |
1260 \ | |
405 | 1261 product(bool, UseXMMForArrayCopy, false, \ |
1262 "Use SSE2 MOVQ instruction for Arraycopy") \ | |
1263 \ | |
1264 product(bool, UseUnalignedLoadStores, false, \ | |
1265 "Use SSE2 MOVDQU instruction for Arraycopy") \ | |
1266 \ | |
3839 | 1267 product(bool, UseCBCond, false, \ |
1268 "Use compare and branch instruction on SPARC") \ | |
1269 \ | |
0 | 1270 product(intx, FieldsAllocationStyle, 1, \ |
1366
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1271 "0 - type based with oops first, 1 - with oops last, " \ |
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diff
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|
1272 "2 - oops in super and sub classes are together") \ |
0 | 1273 \ |
1274 product(bool, CompactFields, true, \ | |
1275 "Allocate nonstatic fields in gaps between previous fields") \ | |
1276 \ | |
1277 notproduct(bool, PrintCompactFieldsSavings, false, \ | |
1278 "Print how many words were saved with CompactFields") \ | |
1279 \ | |
1280 product(bool, UseBiasedLocking, true, \ | |
1281 "Enable biased locking in JVM") \ | |
1282 \ | |
1283 product(intx, BiasedLockingStartupDelay, 4000, \ | |
1284 "Number of milliseconds to wait before enabling biased locking") \ | |
1285 \ | |
1286 diagnostic(bool, PrintBiasedLockingStatistics, false, \ | |
1287 "Print statistics of biased locking in JVM") \ | |
1288 \ | |
1289 product(intx, BiasedLockingBulkRebiasThreshold, 20, \ | |
1290 "Threshold of number of revocations per type to try to " \ | |
1291 "rebias all objects in the heap of that type") \ | |
1292 \ | |
1293 product(intx, BiasedLockingBulkRevokeThreshold, 40, \ | |
1294 "Threshold of number of revocations per type to permanently " \ | |
1295 "revoke biases of all objects in the heap of that type") \ | |
1296 \ | |
1297 product(intx, BiasedLockingDecayTime, 25000, \ | |
1298 "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \ | |
1299 "type after previous bulk rebias") \ | |
1300 \ | |
2376
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1301 develop(bool, JavaObjectsInPerm, false, \ |
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1302 "controls whether Classes and interned Strings are allocated" \ |
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1303 "in perm. This purely intended to allow debugging issues" \ |
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diff
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|
1304 "in production.") \ |
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|
1305 \ |
0 | 1306 /* tracing */ \ |
1307 \ | |
1308 notproduct(bool, TraceRuntimeCalls, false, \ | |
1309 "Trace run-time calls") \ | |
1310 \ | |
1311 develop(bool, TraceJNICalls, false, \ | |
1312 "Trace JNI calls") \ | |
1313 \ | |
1314 notproduct(bool, TraceJVMCalls, false, \ | |
1315 "Trace JVM calls") \ | |
1316 \ | |
370
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1317 product(ccstr, TraceJVMTI, NULL, \ |
0 | 1318 "Trace flags for JVMTI functions and events") \ |
1319 \ | |
1320 /* This option can change an EMCP method into an obsolete method. */ \ | |
1321 /* This can affect tests that except specific methods to be EMCP. */ \ | |
1322 /* This option should be used with caution. */ \ | |
1323 product(bool, StressLdcRewrite, false, \ | |
1324 "Force ldc -> ldc_w rewrite during RedefineClasses") \ | |
1325 \ | |
1326 product(intx, TraceRedefineClasses, 0, \ | |
1327 "Trace level for JVMTI RedefineClasses") \ | |
1328 \ | |
1574 | 1329 develop(bool, StressMethodComparator, false, \ |
1330 "run the MethodComparator on all loaded methods") \ | |
1331 \ | |
0 | 1332 /* change to false by default sometime after Mustang */ \ |
1333 product(bool, VerifyMergedCPBytecodes, true, \ | |
1334 "Verify bytecodes after RedefineClasses constant pool merging") \ | |
1335 \ | |
1336 develop(bool, TraceJNIHandleAllocation, false, \ | |
1337 "Trace allocation/deallocation of JNI handle blocks") \ | |
1338 \ | |
1339 develop(bool, TraceThreadEvents, false, \ | |
1340 "Trace all thread events") \ | |
1341 \ | |
1342 develop(bool, TraceBytecodes, false, \ | |
1343 "Trace bytecode execution") \ | |
1344 \ | |
1345 develop(bool, TraceClassInitialization, false, \ | |
1346 "Trace class initialization") \ | |
1347 \ | |
1936
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diff
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|
1348 product(bool, TraceExceptions, false, \ |
0 | 1349 "Trace exceptions") \ |
1350 \ | |
1351 develop(bool, TraceICs, false, \ | |
1352 "Trace inline cache changes") \ | |
1353 \ | |
1354 notproduct(bool, TraceInvocationCounterOverflow, false, \ | |
1355 "Trace method invocation counter overflow") \ | |
1356 \ | |
1357 develop(bool, TraceInlineCacheClearing, false, \ | |
1358 "Trace clearing of inline caches in nmethods") \ | |
1359 \ | |
1360 develop(bool, TraceDependencies, false, \ | |
1361 "Trace dependencies") \ | |
1362 \ | |
1363 develop(bool, VerifyDependencies, trueInDebug, \ | |
1364 "Exercise and verify the compilation dependency mechanism") \ | |
1365 \ | |
1366 develop(bool, TraceNewOopMapGeneration, false, \ | |
1367 "Trace OopMapGeneration") \ | |
1368 \ | |
1369 develop(bool, TraceNewOopMapGenerationDetailed, false, \ | |
1370 "Trace OopMapGeneration: print detailed cell states") \ | |
1371 \ | |
1372 develop(bool, TimeOopMap, false, \ | |
1373 "Time calls to GenerateOopMap::compute_map() in sum") \ | |
1374 \ | |
1375 develop(bool, TimeOopMap2, false, \ | |
1376 "Time calls to GenerateOopMap::compute_map() individually") \ | |
1377 \ | |
1378 develop(bool, TraceMonitorMismatch, false, \ | |
1379 "Trace monitor matching failures during OopMapGeneration") \ | |
1380 \ | |
1381 develop(bool, TraceOopMapRewrites, false, \ | |
1382 "Trace rewritting of method oops during oop map generation") \ | |
1383 \ | |
1384 develop(bool, TraceSafepoint, false, \ | |
1385 "Trace safepoint operations") \ | |
1386 \ | |
1387 develop(bool, TraceICBuffer, false, \ | |
1388 "Trace usage of IC buffer") \ | |
1389 \ | |
1390 develop(bool, TraceCompiledIC, false, \ | |
1391 "Trace changes of compiled IC") \ | |
1392 \ | |
1393 notproduct(bool, TraceZapDeadLocals, false, \ | |
1394 "Trace zapping dead locals") \ | |
1395 \ | |
1396 develop(bool, TraceStartupTime, false, \ | |
1397 "Trace setup time") \ | |
1398 \ | |
1399 product(ccstr, HPILibPath, NULL, \ | |
1400 "Specify alternate path to HPI library") \ | |
1401 \ | |
1402 develop(bool, TraceProtectionDomainVerification, false, \ | |
1403 "Trace protection domain verifcation") \ | |
1404 \ | |
1405 develop(bool, TraceClearedExceptions, false, \ | |
1406 "Prints when an exception is forcibly cleared") \ | |
1407 \ | |
1408 product(bool, TraceClassResolution, false, \ | |
1409 "Trace all constant pool resolutions (for debugging)") \ | |
1410 \ | |
1411 product(bool, TraceBiasedLocking, false, \ | |
1412 "Trace biased locking in JVM") \ | |
1413 \ | |
1414 product(bool, TraceMonitorInflation, false, \ | |
1415 "Trace monitor inflation in JVM") \ | |
1416 \ | |
1417 /* assembler */ \ | |
1418 product(bool, Use486InstrsOnly, false, \ | |
1419 "Use 80486 Compliant instruction subset") \ | |
1420 \ | |
1421 /* gc */ \ | |
1422 \ | |
1423 product(bool, UseSerialGC, false, \ | |
342
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1424 "Use the serial garbage collector") \ |
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1425 \ |
1193
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|
1426 product(bool, UseG1GC, false, \ |
342
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|
1427 "Use the Garbage-First garbage collector") \ |
0 | 1428 \ |
1429 product(bool, UseParallelGC, false, \ | |
1430 "Use the Parallel Scavenge garbage collector") \ | |
1431 \ | |
1432 product(bool, UseParallelOldGC, false, \ | |
1433 "Use the Parallel Old garbage collector") \ | |
1434 \ | |
1435 product(uintx, HeapMaximumCompactionInterval, 20, \ | |
1436 "How often should we maximally compact the heap (not allowing " \ | |
1437 "any dead space)") \ | |
1438 \ | |
1439 product(uintx, HeapFirstMaximumCompactionCount, 3, \ | |
1440 "The collection count for the first maximum compaction") \ | |
1441 \ | |
1442 product(bool, UseMaximumCompactionOnSystemGC, true, \ | |
1443 "In the Parallel Old garbage collector maximum compaction for " \ | |
1444 "a system GC") \ | |
1445 \ | |
1446 product(uintx, ParallelOldDeadWoodLimiterMean, 50, \ | |
1447 "The mean used by the par compact dead wood" \ | |
1448 "limiter (a number between 0-100).") \ | |
1449 \ | |
1450 product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \ | |
1451 "The standard deviation used by the par compact dead wood" \ | |
1452 "limiter (a number between 0-100).") \ | |
1453 \ | |
1454 product(uintx, ParallelGCThreads, 0, \ | |
1455 "Number of parallel threads parallel gc will use") \ | |
1456 \ | |
4095
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|
1457 product(bool, UseDynamicNumberOfGCThreads, false, \ |
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diff
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|
1458 "Dynamically choose the number of parallel threads " \ |
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diff
changeset
|
1459 "parallel gc will use") \ |
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diff
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|
1460 \ |
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|
1461 diagnostic(bool, ForceDynamicNumberOfGCThreads, false, \ |
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|
1462 "Force dynamic selection of the number of" \ |
bca17e38de00
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diff
changeset
|
1463 "parallel threads parallel gc will use to aid debugging") \ |
bca17e38de00
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diff
changeset
|
1464 \ |
bca17e38de00
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diff
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|
1465 product(uintx, HeapSizePerGCThread, ScaleForWordSize(64*M), \ |
bca17e38de00
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diff
changeset
|
1466 "Size of heap (bytes) per GC thread used in calculating the " \ |
bca17e38de00
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diff
changeset
|
1467 "number of GC threads") \ |
bca17e38de00
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|
1468 \ |
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diff
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|
1469 product(bool, TraceDynamicGCThreads, false, \ |
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diff
changeset
|
1470 "Trace the dynamic GC thread usage") \ |
bca17e38de00
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diff
changeset
|
1471 \ |
483
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diff
changeset
|
1472 develop(bool, ParallelOldGCSplitALot, false, \ |
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diff
changeset
|
1473 "Provoke splitting (copying data from a young gen space to" \ |
0f773163217d
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jcoomes
parents:
481
diff
changeset
|
1474 "multiple destination spaces)") \ |
0f773163217d
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jcoomes
parents:
481
diff
changeset
|
1475 \ |
0f773163217d
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481
diff
changeset
|
1476 develop(uintx, ParallelOldGCSplitInterval, 3, \ |
0f773163217d
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diff
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|
1477 "How often to provoke splitting a young gen space") \ |
0 | 1478 \ |
375
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diff
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|
1479 develop(bool, TraceRegionTasksQueuing, false, \ |
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diff
changeset
|
1480 "Trace the queuing of the region tasks") \ |
0 | 1481 \ |
1284 | 1482 product(uintx, ConcGCThreads, 0, \ |
1483 "Number of threads concurrent gc will use") \ | |
342
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|
1484 \ |
0 | 1485 product(uintx, YoungPLABSize, 4096, \ |
1486 "Size of young gen promotion labs (in HeapWords)") \ | |
1487 \ | |
1488 product(uintx, OldPLABSize, 1024, \ | |
1489 "Size of old gen promotion labs (in HeapWords)") \ | |
1490 \ | |
1491 product(uintx, GCTaskTimeStampEntries, 200, \ | |
1492 "Number of time stamp entries per gc worker thread") \ | |
1493 \ | |
1494 product(bool, AlwaysTenure, false, \ | |
1495 "Always tenure objects in eden. (ParallelGC only)") \ | |
1496 \ | |
1497 product(bool, NeverTenure, false, \ | |
1064 | 1498 "Never tenure objects in eden, May tenure on overflow " \ |
1499 "(ParallelGC only)") \ | |
0 | 1500 \ |
1501 product(bool, ScavengeBeforeFullGC, true, \ | |
1064 | 1502 "Scavenge youngest generation before each full GC, " \ |
1503 "used with UseParallelGC") \ | |
0 | 1504 \ |
1505 develop(bool, ScavengeWithObjectsInToSpace, false, \ | |
1506 "Allow scavenges to occur when to_space contains objects.") \ | |
1507 \ | |
1508 product(bool, UseConcMarkSweepGC, false, \ | |
1509 "Use Concurrent Mark-Sweep GC in the old generation") \ | |
1510 \ | |
1511 product(bool, ExplicitGCInvokesConcurrent, false, \ | |
1512 "A System.gc() request invokes a concurrent collection;" \ | |
1513 " (effective only when UseConcMarkSweepGC)") \ | |
1514 \ | |
1515 product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \ | |
1064 | 1516 "A System.gc() request invokes a concurrent collection and " \ |
1517 "also unloads classes during such a concurrent gc cycle " \ | |
1518 "(effective only when UseConcMarkSweepGC)") \ | |
0 | 1519 \ |
1520
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diff
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|
1520 product(bool, GCLockerInvokesConcurrent, false, \ |
bb843ebc7c55
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1518
diff
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|
1521 "The exit of a JNI CS necessitating a scavenge also" \ |
bb843ebc7c55
6919638: CMS: ExplicitGCInvokesConcurrent misinteracts with gc locker
ysr
parents:
1518
diff
changeset
|
1522 " kicks off a bkgrd concurrent collection") \ |
bb843ebc7c55
6919638: CMS: ExplicitGCInvokesConcurrent misinteracts with gc locker
ysr
parents:
1518
diff
changeset
|
1523 \ |
1991
016a3628c885
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
tonyp
parents:
1972
diff
changeset
|
1524 product(uintx, GCLockerEdenExpansionPercent, 5, \ |
016a3628c885
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
tonyp
parents:
1972
diff
changeset
|
1525 "How much the GC can expand the eden by while the GC locker " \ |
016a3628c885
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
tonyp
parents:
1972
diff
changeset
|
1526 "is active (as a percentage)") \ |
016a3628c885
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
tonyp
parents:
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diff
changeset
|
1527 \ |
0 | 1528 develop(bool, UseCMSAdaptiveFreeLists, true, \ |
1529 "Use Adaptive Free Lists in the CMS generation") \ | |
1530 \ | |
1531 develop(bool, UseAsyncConcMarkSweepGC, true, \ | |
1532 "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\ | |
1533 \ | |
1534 develop(bool, RotateCMSCollectionTypes, false, \ | |
1535 "Rotate the CMS collections among concurrent and STW") \ | |
1536 \ | |
1537 product(bool, UseCMSBestFit, true, \ | |
1538 "Use CMS best fit allocation strategy") \ | |
1539 \ | |
1540 product(bool, UseCMSCollectionPassing, true, \ | |
1541 "Use passing of collection from background to foreground") \ | |
1542 \ | |
1543 product(bool, UseParNewGC, false, \ | |
1544 "Use parallel threads in the new generation.") \ | |
1545 \ | |
1546 product(bool, ParallelGCVerbose, false, \ | |
1547 "Verbose output for parallel GC.") \ | |
1548 \ | |
1549 product(intx, ParallelGCBufferWastePct, 10, \ | |
1550 "wasted fraction of parallel allocation buffer.") \ | |
1551 \ | |
3357
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3325
diff
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|
1552 diagnostic(bool, ParallelGCRetainPLAB, false, \ |
fc2b798ab316
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ysr
parents:
3325
diff
changeset
|
1553 "Retain parallel allocation buffers across scavenges; " \ |
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
ysr
parents:
3325
diff
changeset
|
1554 " -- disabled because this currently conflicts with " \ |
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
ysr
parents:
3325
diff
changeset
|
1555 " parallel card scanning under certain conditions ") \ |
0 | 1556 \ |
1557 product(intx, TargetPLABWastePct, 10, \ | |
1558 "target wasted space in last buffer as pct of overall allocation")\ | |
1559 \ | |
1560 product(uintx, PLABWeight, 75, \ | |
1561 "Percentage (0-100) used to weight the current sample when" \ | |
1562 "computing exponentially decaying average for ResizePLAB.") \ | |
1563 \ | |
1564 product(bool, ResizePLAB, true, \ | |
1565 "Dynamically resize (survivor space) promotion labs") \ | |
1566 \ | |
1567 product(bool, PrintPLAB, false, \ | |
1568 "Print (survivor space) promotion labs sizing decisions") \ | |
1569 \ | |
1570 product(intx, ParGCArrayScanChunk, 50, \ | |
1571 "Scan a subset and push remainder, if array is bigger than this") \ | |
1572 \ | |
695 | 1573 product(bool, ParGCUseLocalOverflow, false, \ |
1574 "Instead of a global overflow list, use local overflow stacks") \ | |
1575 \ | |
679
cea947c8a988
6819891: ParNew: Fix work queue overflow code to deal correctly with +UseCompressedOops
ysr
parents:
647
diff
changeset
|
1576 product(bool, ParGCTrimOverflow, true, \ |
695 | 1577 "Eagerly trim the local overflow lists (when ParGCUseLocalOverflow") \ |
679
cea947c8a988
6819891: ParNew: Fix work queue overflow code to deal correctly with +UseCompressedOops
ysr
parents:
647
diff
changeset
|
1578 \ |
534 | 1579 notproduct(bool, ParGCWorkQueueOverflowALot, false, \ |
1580 "Whether we should simulate work queue overflow in ParNew") \ | |
1581 \ | |
1582 notproduct(uintx, ParGCWorkQueueOverflowInterval, 1000, \ | |
1064 | 1583 "An `interval' counter that determines how frequently " \ |
1584 "we simulate overflow; a smaller number increases frequency") \ | |
534 | 1585 \ |
1586 product(uintx, ParGCDesiredObjsFromOverflowList, 20, \ | |
0 | 1587 "The desired number of objects to claim from the overflow list") \ |
1588 \ | |
4728
441e946dc1af
7121618: Change type of number of GC workers to unsigned int.
jmasa
parents:
4125
diff
changeset
|
1589 diagnostic(uintx, ParGCStridesPerThread, 2, \ |
3357
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
ysr
parents:
3325
diff
changeset
|
1590 "The number of strides per worker thread that we divide up the " \ |
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
ysr
parents:
3325
diff
changeset
|
1591 "card table scanning work into") \ |
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
ysr
parents:
3325
diff
changeset
|
1592 \ |
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
ysr
parents:
3325
diff
changeset
|
1593 diagnostic(intx, ParGCCardsPerStrideChunk, 256, \ |
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
ysr
parents:
3325
diff
changeset
|
1594 "The number of cards in each chunk of the parallel chunks used " \ |
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
ysr
parents:
3325
diff
changeset
|
1595 "during card table scanning") \ |
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
ysr
parents:
3325
diff
changeset
|
1596 \ |
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
ysr
parents:
3325
diff
changeset
|
1597 product(uintx, CMSParPromoteBlocksToClaim, 16, \ |
0 | 1598 "Number of blocks to attempt to claim when refilling CMS LAB for "\ |
1599 "parallel GC.") \ | |
1600 \ | |
1145
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|
1601 product(uintx, OldPLABWeight, 50, \ |
e018e6884bd8
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diff
changeset
|
1602 "Percentage (0-100) used to weight the current sample when" \ |
e018e6884bd8
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parents:
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diff
changeset
|
1603 "computing exponentially decaying average for resizing CMSParPromoteBlocksToClaim.") \ |
e018e6884bd8
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parents:
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diff
changeset
|
1604 \ |
e018e6884bd8
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parents:
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changeset
|
1605 product(bool, ResizeOldPLAB, true, \ |
e018e6884bd8
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parents:
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diff
changeset
|
1606 "Dynamically resize (old gen) promotion labs") \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
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parents:
1064
diff
changeset
|
1607 \ |
e018e6884bd8
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ysr
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1064
diff
changeset
|
1608 product(bool, PrintOldPLAB, false, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1609 "Print (old gen) promotion labs sizing decisions") \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
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parents:
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diff
changeset
|
1610 \ |
e018e6884bd8
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parents:
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diff
changeset
|
1611 product(uintx, CMSOldPLABMin, 16, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
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diff
changeset
|
1612 "Min size of CMS gen promotion lab caches per worker per blksize")\ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
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diff
changeset
|
1613 \ |
e018e6884bd8
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ysr
parents:
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diff
changeset
|
1614 product(uintx, CMSOldPLABMax, 1024, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
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diff
changeset
|
1615 "Max size of CMS gen promotion lab caches per worker per blksize")\ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
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diff
changeset
|
1616 \ |
e018e6884bd8
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ysr
parents:
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diff
changeset
|
1617 product(uintx, CMSOldPLABNumRefills, 4, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
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diff
changeset
|
1618 "Nominal number of refills of CMS gen promotion lab cache" \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
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diff
changeset
|
1619 " per worker per block size") \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1620 \ |
e018e6884bd8
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ysr
parents:
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diff
changeset
|
1621 product(bool, CMSOldPLABResizeQuicker, false, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1622 "Whether to react on-the-fly during a scavenge to a sudden" \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1623 " change in block demand rate") \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1624 \ |
e018e6884bd8
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ysr
parents:
1064
diff
changeset
|
1625 product(uintx, CMSOldPLABToleranceFactor, 4, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1626 "The tolerance of the phase-change detector for on-the-fly" \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1627 " PLAB resizing during a scavenge") \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1628 \ |
e018e6884bd8
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ysr
parents:
1064
diff
changeset
|
1629 product(uintx, CMSOldPLABReactivityFactor, 2, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1630 "The gain in the feedback loop for on-the-fly PLAB resizing" \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1631 " during a scavenge") \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1632 \ |
e018e6884bd8
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ysr
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diff
changeset
|
1633 product(uintx, CMSOldPLABReactivityCeiling, 10, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
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1064
diff
changeset
|
1634 "The clamping of the gain in the feedback loop for on-the-fly" \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1635 " PLAB resizing during a scavenge") \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
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1064
diff
changeset
|
1636 \ |
0 | 1637 product(bool, AlwaysPreTouch, false, \ |
1638 "It forces all freshly committed pages to be pre-touched.") \ | |
1639 \ | |
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
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2362
diff
changeset
|
1640 product_pd(intx, CMSYoungGenPerWorker, \ |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
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2362
diff
changeset
|
1641 "The maximum size of young gen chosen by default per GC worker " \ |
1064 | 1642 "thread available") \ |
0 | 1643 \ |
342
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142
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changeset
|
1644 product(bool, GCOverheadReporting, false, \ |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
142
diff
changeset
|
1645 "Enables the GC overhead reporting facility") \ |
37f87013dfd8
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ysr
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142
diff
changeset
|
1646 \ |
37f87013dfd8
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142
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|
1647 product(intx, GCOverheadReportingPeriodMS, 100, \ |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
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142
diff
changeset
|
1648 "Reporting period for conc GC overhead reporting, in ms ") \ |
37f87013dfd8
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|
1649 \ |
0 | 1650 product(bool, CMSIncrementalMode, false, \ |
1651 "Whether CMS GC should operate in \"incremental\" mode") \ | |
1652 \ | |
1653 product(uintx, CMSIncrementalDutyCycle, 10, \ | |
1654 "CMS incremental mode duty cycle (a percentage, 0-100). If" \ | |
1655 "CMSIncrementalPacing is enabled, then this is just the initial" \ | |
1656 "value") \ | |
1657 \ | |
1658 product(bool, CMSIncrementalPacing, true, \ | |
1659 "Whether the CMS incremental mode duty cycle should be " \ | |
1660 "automatically adjusted") \ | |
1661 \ | |
1662 product(uintx, CMSIncrementalDutyCycleMin, 0, \ | |
1064 | 1663 "Lower bound on the duty cycle when CMSIncrementalPacing is " \ |
1664 "enabled (a percentage, 0-100)") \ | |
0 | 1665 \ |
1666 product(uintx, CMSIncrementalSafetyFactor, 10, \ | |
1064 | 1667 "Percentage (0-100) used to add conservatism when computing the " \ |
1668 "duty cycle") \ | |
0 | 1669 \ |
1670 product(uintx, CMSIncrementalOffset, 0, \ | |
1671 "Percentage (0-100) by which the CMS incremental mode duty cycle" \ | |
1064 | 1672 " is shifted to the right within the period between young GCs") \ |
0 | 1673 \ |
1145
e018e6884bd8
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changeset
|
1674 product(uintx, CMSExpAvgFactor, 50, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
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1064
diff
changeset
|
1675 "Percentage (0-100) used to weight the current sample when" \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1676 "computing exponential averages for CMS statistics.") \ |
e018e6884bd8
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ysr
parents:
1064
diff
changeset
|
1677 \ |
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1678 product(uintx, CMS_FLSWeight, 75, \ |
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1679 "Percentage (0-100) used to weight the current sample when" \ |
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1680 "computing exponentially decating averages for CMS FLS statistics.") \ |
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1681 \ |
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1682 product(uintx, CMS_FLSPadding, 1, \ |
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1683 "The multiple of deviation from mean to use for buffering" \ |
0 | 1684 "against volatility in free list demand.") \ |
1685 \ | |
1686 product(uintx, FLSCoalescePolicy, 2, \ | |
1687 "CMS: Aggression level for coalescing, increasing from 0 to 4") \ | |
1688 \ | |
1145
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1689 product(bool, FLSAlwaysCoalesceLarge, false, \ |
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1690 "CMS: Larger free blocks are always available for coalescing") \ |
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1691 \ |
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1692 product(double, FLSLargestBlockCoalesceProximity, 0.99, \ |
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1693 "CMS: the smaller the percentage the greater the coalition force")\ |
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1694 \ |
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1695 product(double, CMSSmallCoalSurplusPercent, 1.05, \ |
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1696 "CMS: the factor by which to inflate estimated demand of small" \ |
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1697 " block sizes to prevent coalescing with an adjoining block") \ |
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1698 \ |
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1699 product(double, CMSLargeCoalSurplusPercent, 0.95, \ |
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1700 "CMS: the factor by which to inflate estimated demand of large" \ |
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1701 " block sizes to prevent coalescing with an adjoining block") \ |
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1702 \ |
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1703 product(double, CMSSmallSplitSurplusPercent, 1.10, \ |
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1704 "CMS: the factor by which to inflate estimated demand of small" \ |
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1705 " block sizes to prevent splitting to supply demand for smaller" \ |
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1706 " blocks") \ |
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1707 \ |
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1708 product(double, CMSLargeSplitSurplusPercent, 1.00, \ |
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1709 "CMS: the factor by which to inflate estimated demand of large" \ |
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1710 " block sizes to prevent splitting to supply demand for smaller" \ |
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1711 " blocks") \ |
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1712 \ |
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1713 product(bool, CMSExtrapolateSweep, false, \ |
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1714 "CMS: cushion for block demand during sweep") \ |
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1715 \ |
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1716 product(uintx, CMS_SweepWeight, 75, \ |
1064 | 1717 "Percentage (0-100) used to weight the current sample when " \ |
1718 "computing exponentially decaying average for inter-sweep " \ | |
1719 "duration") \ | |
0 | 1720 \ |
1145
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1721 product(uintx, CMS_SweepPadding, 1, \ |
1064 | 1722 "The multiple of deviation from mean to use for buffering " \ |
0 | 1723 "against volatility in inter-sweep duration.") \ |
1724 \ | |
1725 product(uintx, CMS_SweepTimerThresholdMillis, 10, \ | |
1726 "Skip block flux-rate sampling for an epoch unless inter-sweep " \ | |
1064 | 1727 "duration exceeds this threhold in milliseconds") \ |
0 | 1728 \ |
1729 develop(bool, CMSTraceIncrementalMode, false, \ | |
1730 "Trace CMS incremental mode") \ | |
1731 \ | |
1732 develop(bool, CMSTraceIncrementalPacing, false, \ | |
1733 "Trace CMS incremental mode pacing computation") \ | |
1734 \ | |
1735 develop(bool, CMSTraceThreadState, false, \ | |
1736 "Trace the CMS thread state (enable the trace_state() method)") \ | |
1737 \ | |
1738 product(bool, CMSClassUnloadingEnabled, false, \ | |
1739 "Whether class unloading enabled when using CMS GC") \ | |
1740 \ | |
94
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1741 product(uintx, CMSClassUnloadingMaxInterval, 0, \ |
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1742 "When CMS class unloading is enabled, the maximum CMS cycle count"\ |
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1743 " for which classes may not be unloaded") \ |
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1744 \ |
0 | 1745 product(bool, CMSCompactWhenClearAllSoftRefs, true, \ |
1746 "Compact when asked to collect CMS gen with clear_all_soft_refs") \ | |
1747 \ | |
1748 product(bool, UseCMSCompactAtFullCollection, true, \ | |
1749 "Use mark sweep compact at full collections") \ | |
1750 \ | |
1751 product(uintx, CMSFullGCsBeforeCompaction, 0, \ | |
1752 "Number of CMS full collection done before compaction if > 0") \ | |
1753 \ | |
1754 develop(intx, CMSDictionaryChoice, 0, \ | |
1755 "Use BinaryTreeDictionary as default in the CMS generation") \ | |
1756 \ | |
1757 product(uintx, CMSIndexedFreeListReplenish, 4, \ | |
1777
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1758 "Replenish an indexed free list with this number of chunks") \ |
0 | 1759 \ |
1145
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1760 product(bool, CMSReplenishIntermediate, true, \ |
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1761 "Replenish all intermediate free-list caches") \ |
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1762 \ |
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1763 product(bool, CMSSplitIndexedFreeListBlocks, true, \ |
1777
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1764 "When satisfying batched demand, split blocks from the " \ |
1145
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1765 "IndexedFreeList whose size is a multiple of requested size") \ |
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1766 \ |
0 | 1767 product(bool, CMSLoopWarn, false, \ |
1768 "Warn in case of excessive CMS looping") \ | |
1769 \ | |
1770 develop(bool, CMSOverflowEarlyRestoration, false, \ | |
1771 "Whether preserved marks should be restored early") \ | |
1772 \ | |
1284 | 1773 product(uintx, MarkStackSize, NOT_LP64(32*K) LP64_ONLY(4*M), \ |
1774 "Size of marking stack") \ | |
1775 \ | |
1776 product(uintx, MarkStackSizeMax, NOT_LP64(4*M) LP64_ONLY(512*M), \ | |
1777 "Max size of marking stack") \ | |
0 | 1778 \ |
1779 notproduct(bool, CMSMarkStackOverflowALot, false, \ | |
1780 "Whether we should simulate frequent marking stack / work queue" \ | |
1781 " overflow") \ | |
1782 \ | |
534 | 1783 notproduct(uintx, CMSMarkStackOverflowInterval, 1000, \ |
1784 "An `interval' counter that determines how frequently" \ | |
0 | 1785 " we simulate overflow; a smaller number increases frequency") \ |
1786 \ | |
1787 product(uintx, CMSMaxAbortablePrecleanLoops, 0, \ | |
1788 "(Temporary, subject to experimentation)" \ | |
1789 "Maximum number of abortable preclean iterations, if > 0") \ | |
1790 \ | |
1791 product(intx, CMSMaxAbortablePrecleanTime, 5000, \ | |
1792 "(Temporary, subject to experimentation)" \ | |
1793 "Maximum time in abortable preclean in ms") \ | |
1794 \ | |
1795 product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \ | |
1796 "(Temporary, subject to experimentation)" \ | |
1797 "Nominal minimum work per abortable preclean iteration") \ | |
1798 \ | |
1887
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1799 manageable(intx, CMSAbortablePrecleanWaitMillis, 100, \ |
0 | 1800 "(Temporary, subject to experimentation)" \ |
1801 " Time that we sleep between iterations when not given" \ | |
1802 " enough work per iteration") \ | |
1803 \ | |
1804 product(uintx, CMSRescanMultiple, 32, \ | |
1805 "Size (in cards) of CMS parallel rescan task") \ | |
1806 \ | |
1807 product(uintx, CMSConcMarkMultiple, 32, \ | |
1808 "Size (in cards) of CMS concurrent MT marking task") \ | |
1809 \ | |
1810 product(uintx, CMSRevisitStackSize, 1*M, \ | |
1811 "Size of CMS KlassKlass revisit stack") \ | |
1812 \ | |
1813 product(bool, CMSAbortSemantics, false, \ | |
1814 "Whether abort-on-overflow semantics is implemented") \ | |
1815 \ | |
1816 product(bool, CMSParallelRemarkEnabled, true, \ | |
1817 "Whether parallel remark enabled (only if ParNewGC)") \ | |
1818 \ | |
1819 product(bool, CMSParallelSurvivorRemarkEnabled, true, \ | |
1820 "Whether parallel remark of survivor space" \ | |
1821 " enabled (effective only if CMSParallelRemarkEnabled)") \ | |
1822 \ | |
1823 product(bool, CMSPLABRecordAlways, true, \ | |
1824 "Whether to always record survivor space PLAB bdries" \ | |
1825 " (effective only if CMSParallelSurvivorRemarkEnabled)") \ | |
1826 \ | |
1827 product(bool, CMSConcurrentMTEnabled, true, \ | |
1828 "Whether multi-threaded concurrent work enabled (if ParNewGC)") \ | |
1829 \ | |
1830 product(bool, CMSPermGenPrecleaningEnabled, true, \ | |
1831 "Whether concurrent precleaning enabled in perm gen" \ | |
1832 " (effective only when CMSPrecleaningEnabled is true)") \ | |
1833 \ | |
1834 product(bool, CMSPrecleaningEnabled, true, \ | |
1835 "Whether concurrent precleaning enabled") \ | |
1836 \ | |
1837 product(uintx, CMSPrecleanIter, 3, \ | |
1838 "Maximum number of precleaning iteration passes") \ | |
1839 \ | |
1840 product(uintx, CMSPrecleanNumerator, 2, \ | |
1841 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ | |
1842 " ratio") \ | |
1843 \ | |
1844 product(uintx, CMSPrecleanDenominator, 3, \ | |
1845 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ | |
1846 " ratio") \ | |
1847 \ | |
452
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1848 product(bool, CMSPrecleanRefLists1, true, \ |
0 | 1849 "Preclean ref lists during (initial) preclean phase") \ |
1850 \ | |
1851 product(bool, CMSPrecleanRefLists2, false, \ | |
1852 "Preclean ref lists during abortable preclean phase") \ | |
1853 \ | |
1854 product(bool, CMSPrecleanSurvivors1, false, \ | |
1855 "Preclean survivors during (initial) preclean phase") \ | |
1856 \ | |
1857 product(bool, CMSPrecleanSurvivors2, true, \ | |
1858 "Preclean survivors during abortable preclean phase") \ | |
1859 \ | |
1860 product(uintx, CMSPrecleanThreshold, 1000, \ | |
1861 "Don't re-iterate if #dirty cards less than this") \ | |
1862 \ | |
1863 product(bool, CMSCleanOnEnter, true, \ | |
1864 "Clean-on-enter optimization for reducing number of dirty cards") \ | |
1865 \ | |
1866 product(uintx, CMSRemarkVerifyVariant, 1, \ | |
1867 "Choose variant (1,2) of verification following remark") \ | |
1868 \ | |
1869 product(uintx, CMSScheduleRemarkEdenSizeThreshold, 2*M, \ | |
1870 "If Eden used is below this value, don't try to schedule remark") \ | |
1871 \ | |
1872 product(uintx, CMSScheduleRemarkEdenPenetration, 50, \ | |
1873 "The Eden occupancy % at which to try and schedule remark pause") \ | |
1874 \ | |
1875 product(uintx, CMSScheduleRemarkSamplingRatio, 5, \ | |
1876 "Start sampling Eden top at least before yg occupancy reaches" \ | |
1877 " 1/<ratio> of the size at which we plan to schedule remark") \ | |
1878 \ | |
1879 product(uintx, CMSSamplingGrain, 16*K, \ | |
1880 "The minimum distance between eden samples for CMS (see above)") \ | |
1881 \ | |
1882 product(bool, CMSScavengeBeforeRemark, false, \ | |
1883 "Attempt scavenge before the CMS remark step") \ | |
1884 \ | |
1885 develop(bool, CMSTraceSweeper, false, \ | |
1886 "Trace some actions of the CMS sweeper") \ | |
1887 \ | |
1888 product(uintx, CMSWorkQueueDrainThreshold, 10, \ | |
1889 "Don't drain below this size per parallel worker/thief") \ | |
1890 \ | |
1887
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1891 manageable(intx, CMSWaitDuration, 2000, \ |
0 | 1892 "Time in milliseconds that CMS thread waits for young GC") \ |
1893 \ | |
1894 product(bool, CMSYield, true, \ | |
1895 "Yield between steps of concurrent mark & sweep") \ | |
1896 \ | |
1897 product(uintx, CMSBitMapYieldQuantum, 10*M, \ | |
1898 "Bitmap operations should process at most this many bits" \ | |
1899 "between yields") \ | |
1900 \ | |
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1901 product(bool, CMSDumpAtPromotionFailure, false, \ |
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1902 "Dump useful information about the state of the CMS old " \ |
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1903 " generation upon a promotion failure.") \ |
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1904 \ |
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1905 product(bool, CMSPrintChunksInDump, false, \ |
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1906 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ |
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1907 " more detailed information about the free chunks.") \ |
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1908 \ |
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1909 product(bool, CMSPrintObjectsInDump, false, \ |
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1910 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ |
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1911 " more detailed information about the allocated objects.") \ |
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1912 \ |
0 | 1913 diagnostic(bool, FLSVerifyAllHeapReferences, false, \ |
1914 "Verify that all refs across the FLS boundary " \ | |
1915 " are to valid objects") \ | |
1916 \ | |
1917 diagnostic(bool, FLSVerifyLists, false, \ | |
1918 "Do lots of (expensive) FreeListSpace verification") \ | |
1919 \ | |
1920 diagnostic(bool, FLSVerifyIndexTable, false, \ | |
1921 "Do lots of (expensive) FLS index table verification") \ | |
1922 \ | |
1923 develop(bool, FLSVerifyDictionary, false, \ | |
1924 "Do lots of (expensive) FLS dictionary verification") \ | |
1925 \ | |
1926 develop(bool, VerifyBlockOffsetArray, false, \ | |
1927 "Do (expensive!) block offset array verification") \ | |
1928 \ | |
3321
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1929 diagnostic(bool, BlockOffsetArrayUseUnallocatedBlock, false, \ |
0 | 1930 "Maintain _unallocated_block in BlockOffsetArray" \ |
1931 " (currently applicable only to CMS collector)") \ | |
1932 \ | |
1933 develop(bool, TraceCMSState, false, \ | |
1934 "Trace the state of the CMS collection") \ | |
1935 \ | |
1936 product(intx, RefDiscoveryPolicy, 0, \ | |
1937 "Whether reference-based(0) or referent-based(1)") \ | |
1938 \ | |
1939 product(bool, ParallelRefProcEnabled, false, \ | |
1940 "Enable parallel reference processing whenever possible") \ | |
1941 \ | |
1942 product(bool, ParallelRefProcBalancingEnabled, true, \ | |
1943 "Enable balancing of reference processing queues") \ | |
1944 \ | |
1945 product(intx, CMSTriggerRatio, 80, \ | |
1946 "Percentage of MinHeapFreeRatio in CMS generation that is " \ | |
1064 | 1947 "allocated before a CMS collection cycle commences") \ |
0 | 1948 \ |
94
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1949 product(intx, CMSTriggerPermRatio, 80, \ |
1064 | 1950 "Percentage of MinHeapFreeRatio in the CMS perm generation that " \ |
1951 "is allocated before a CMS collection cycle commences, that " \ | |
1952 "also collects the perm generation") \ | |
94
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1953 \ |
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1954 product(uintx, CMSBootstrapOccupancy, 50, \ |
0 | 1955 "Percentage CMS generation occupancy at which to " \ |
1064 | 1956 "initiate CMS collection for bootstrapping collection stats") \ |
0 | 1957 \ |
1958 product(intx, CMSInitiatingOccupancyFraction, -1, \ | |
1959 "Percentage CMS generation occupancy to start a CMS collection " \ | |
1064 | 1960 "cycle. A negative value means that CMSTriggerRatio is used") \ |
94
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1961 \ |
1283
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1962 product(uintx, InitiatingHeapOccupancyPercent, 45, \ |
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1963 "Percentage of the (entire) heap occupancy to start a " \ |
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1964 "concurrent GC cycle. It us used by GCs that trigger a " \ |
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1965 "concurrent GC cycle based on the occupancy of the entire heap, " \ |
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1966 "not just one of the generations (e.g., G1). A value of 0 " \ |
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diff
changeset
|
1967 "denotes 'do constant GC cycles'.") \ |
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6928073: G1: use existing command line parameters for marking cycle initiation
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1211
diff
changeset
|
1968 \ |
94
0834225a7916
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parents:
15
diff
changeset
|
1969 product(intx, CMSInitiatingPermOccupancyFraction, -1, \ |
1064 | 1970 "Percentage CMS perm generation occupancy to start a " \ |
1971 "CMScollection cycle. A negative value means that " \ | |
1972 "CMSTriggerPermRatio is used") \ | |
0 | 1973 \ |
1974 product(bool, UseCMSInitiatingOccupancyOnly, false, \ | |
1975 "Only use occupancy as a crierion for starting a CMS collection") \ | |
1976 \ | |
94
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parents:
15
diff
changeset
|
1977 product(intx, CMSIsTooFullPercentage, 98, \ |
1064 | 1978 "An absolute ceiling above which CMS will always consider the " \ |
1979 "perm gen ripe for collection") \ | |
94
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parents:
15
diff
changeset
|
1980 \ |
0 | 1981 develop(bool, CMSTestInFreeList, false, \ |
1982 "Check if the coalesced range is already in the " \ | |
1064 | 1983 "free lists as claimed") \ |
0 | 1984 \ |
1985 notproduct(bool, CMSVerifyReturnedBytes, false, \ | |
1986 "Check that all the garbage collected was returned to the " \ | |
1987 "free lists.") \ | |
1988 \ | |
1989 notproduct(bool, ScavengeALot, false, \ | |
1990 "Force scavenge at every Nth exit from the runtime system " \ | |
1991 "(N=ScavengeALotInterval)") \ | |
1992 \ | |
1993 develop(bool, FullGCALot, false, \ | |
1994 "Force full gc at every Nth exit from the runtime system " \ | |
1995 "(N=FullGCALotInterval)") \ | |
1996 \ | |
1997 notproduct(bool, GCALotAtAllSafepoints, false, \ | |
1998 "Enforce ScavengeALot/GCALot at all potential safepoints") \ | |
1999 \ | |
1145
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1064
diff
changeset
|
2000 product(bool, PrintPromotionFailure, false, \ |
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ysr
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1064
diff
changeset
|
2001 "Print additional diagnostic information following " \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
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1064
diff
changeset
|
2002 " promotion failure") \ |
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diff
changeset
|
2003 \ |
0 | 2004 notproduct(bool, PromotionFailureALot, false, \ |
2005 "Use promotion failure handling on every youngest generation " \ | |
2006 "collection") \ | |
2007 \ | |
2008 develop(uintx, PromotionFailureALotCount, 1000, \ | |
2009 "Number of promotion failures occurring at ParGCAllocBuffer" \ | |
2010 "refill attempts (ParNew) or promotion attempts " \ | |
2011 "(other young collectors) ") \ | |
2012 \ | |
2013 develop(uintx, PromotionFailureALotInterval, 5, \ | |
2014 "Total collections between promotion failures alot") \ | |
2015 \ | |
1837
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diff
changeset
|
2016 experimental(intx, WorkStealingSleepMillis, 1, \ |
0 | 2017 "Sleep time when sleep is used for yields") \ |
2018 \ | |
2430 | 2019 experimental(uintx, WorkStealingYieldsBeforeSleep, 5000, \ |
0 | 2020 "Number of yields before a sleep is done during workstealing") \ |
2021 \ | |
1837
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1836
diff
changeset
|
2022 experimental(uintx, WorkStealingHardSpins, 4096, \ |
546
05c6d52fa7a9
6690928: Use spinning in combination with yields for workstealing termination.
jmasa
parents:
541
diff
changeset
|
2023 "Number of iterations in a spin loop between checks on " \ |
05c6d52fa7a9
6690928: Use spinning in combination with yields for workstealing termination.
jmasa
parents:
541
diff
changeset
|
2024 "time out of hard spin") \ |
05c6d52fa7a9
6690928: Use spinning in combination with yields for workstealing termination.
jmasa
parents:
541
diff
changeset
|
2025 \ |
1837
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1836
diff
changeset
|
2026 experimental(uintx, WorkStealingSpinToYieldRatio, 10, \ |
546
05c6d52fa7a9
6690928: Use spinning in combination with yields for workstealing termination.
jmasa
parents:
541
diff
changeset
|
2027 "Ratio of hard spins to calls to yield") \ |
05c6d52fa7a9
6690928: Use spinning in combination with yields for workstealing termination.
jmasa
parents:
541
diff
changeset
|
2028 \ |
534 | 2029 product(uintx, PreserveMarkStackSize, 1024, \ |
1064 | 2030 "Size for stack used in promotion failure handling") \ |
0 | 2031 \ |
1311
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
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diff
changeset
|
2032 develop(uintx, ObjArrayMarkingStride, 512, \ |
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
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diff
changeset
|
2033 "Number of ObjArray elements to push onto the marking stack" \ |
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
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diff
changeset
|
2034 "before pushing a continuation entry") \ |
2a1472c30599
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1288
diff
changeset
|
2035 \ |
3779 | 2036 notproduct(bool, ExecuteInternalVMTests, false, \ |
2037 "Enable execution of internal VM tests.") \ | |
2038 \ | |
0 | 2039 product_pd(bool, UseTLAB, "Use thread-local object allocation") \ |
2040 \ | |
2041 product_pd(bool, ResizeTLAB, \ | |
2042 "Dynamically resize tlab size for threads") \ | |
2043 \ | |
2044 product(bool, ZeroTLAB, false, \ | |
2045 "Zero out the newly created TLAB") \ | |
2046 \ | |
342
37f87013dfd8
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diff
changeset
|
2047 product(bool, FastTLABRefill, true, \ |
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142
diff
changeset
|
2048 "Use fast TLAB refill code") \ |
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diff
changeset
|
2049 \ |
0 | 2050 product(bool, PrintTLAB, false, \ |
2051 "Print various TLAB related information") \ | |
2052 \ | |
2053 product(bool, TLABStats, true, \ | |
2054 "Print various TLAB related information") \ | |
2055 \ | |
3892 | 2056 product(bool, UseBlockZeroing, false, \ |
2057 "Use special cpu instructions for block zeroing") \ | |
2058 \ | |
2059 product(intx, BlockZeroingLowLimit, 2048, \ | |
2060 "Minimum size in bytes when block zeroing will be used") \ | |
2061 \ | |
3903 | 2062 product(bool, UseBlockCopy, false, \ |
2063 "Use special cpu instructions for block copy") \ | |
2064 \ | |
2065 product(intx, BlockCopyLowLimit, 2048, \ | |
2066 "Minimum size in bytes when block copy will be used") \ | |
2067 \ | |
941 | 2068 product(bool, PrintRevisitStats, false, \ |
2069 "Print revisit (klass and MDO) stack related information") \ | |
2070 \ | |
2192
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
2071 EMBEDDED_ONLY(product(bool, LowMemoryProtection, true, \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
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2177
diff
changeset
|
2072 "Enable LowMemoryProtection")) \ |
b92c45f2bc75
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bobv
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2177
diff
changeset
|
2073 \ |
0 | 2074 product_pd(bool, NeverActAsServerClassMachine, \ |
2075 "Never act like a server-class machine") \ | |
2076 \ | |
2077 product(bool, AlwaysActAsServerClassMachine, false, \ | |
2078 "Always act like a server-class machine") \ | |
2079 \ | |
1064 | 2080 product_pd(uint64_t, MaxRAM, \ |
2081 "Real memory size (in bytes) used to set maximum heap size") \ | |
2082 \ | |
2083 product(uintx, ErgoHeapSizeLimit, 0, \ | |
2084 "Maximum ergonomically set heap size (in bytes); zero means use " \ | |
2085 "MaxRAM / MaxRAMFraction") \ | |
2086 \ | |
2087 product(uintx, MaxRAMFraction, 4, \ | |
2088 "Maximum fraction (1/n) of real memory used for maximum heap " \ | |
2089 "size") \ | |
0 | 2090 \ |
2091 product(uintx, DefaultMaxRAMFraction, 4, \ | |
1064 | 2092 "Maximum fraction (1/n) of real memory used for maximum heap " \ |
2093 "size; deprecated: to be renamed to MaxRAMFraction") \ | |
2094 \ | |
2095 product(uintx, MinRAMFraction, 2, \ | |
2096 "Minimum fraction (1/n) of real memory used for maxmimum heap " \ | |
2097 "size on systems with small physical memory size") \ | |
2098 \ | |
2099 product(uintx, InitialRAMFraction, 64, \ | |
2100 "Fraction (1/n) of real memory used for initial heap size") \ | |
0 | 2101 \ |
2102 product(bool, UseAutoGCSelectPolicy, false, \ | |
2103 "Use automatic collection selection policy") \ | |
2104 \ | |
2105 product(uintx, AutoGCSelectPauseMillis, 5000, \ | |
2106 "Automatic GC selection pause threshhold in ms") \ | |
2107 \ | |
2108 product(bool, UseAdaptiveSizePolicy, true, \ | |
2109 "Use adaptive generation sizing policies") \ | |
2110 \ | |
2111 product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \ | |
2112 "Use adaptive survivor sizing policies") \ | |
2113 \ | |
2114 product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \ | |
2115 "Use adaptive young-old sizing policies at minor collections") \ | |
2116 \ | |
2117 product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \ | |
2118 "Use adaptive young-old sizing policies at major collections") \ | |
2119 \ | |
2120 product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \ | |
2121 "Use statistics from System.GC for adaptive size policy") \ | |
2122 \ | |
2123 product(bool, UseAdaptiveGCBoundary, false, \ | |
2124 "Allow young-old boundary to move") \ | |
2125 \ | |
2126 develop(bool, TraceAdaptiveGCBoundary, false, \ | |
2127 "Trace young-old boundary moves") \ | |
2128 \ | |
2129 develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \ | |
2130 "Resize the virtual spaces of the young or old generations") \ | |
2131 \ | |
2132 product(uintx, AdaptiveSizeThroughPutPolicy, 0, \ | |
2133 "Policy for changeing generation size for throughput goals") \ | |
2134 \ | |
2135 product(uintx, AdaptiveSizePausePolicy, 0, \ | |
2136 "Policy for changing generation size for pause goals") \ | |
2137 \ | |
2138 develop(bool, PSAdjustTenuredGenForMinorPause, false, \ | |
2139 "Adjust tenured generation to achive a minor pause goal") \ | |
2140 \ | |
2141 develop(bool, PSAdjustYoungGenForMajorPause, false, \ | |
2142 "Adjust young generation to achive a major pause goal") \ | |
2143 \ | |
2144 product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \ | |
2145 "Number of steps where heuristics is used before data is used") \ | |
2146 \ | |
2147 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \ | |
2148 "Number of collections before the adaptive sizing is started") \ | |
2149 \ | |
2150 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \ | |
1064 | 2151 "Collecton interval for printing information; zero => never") \ |
0 | 2152 \ |
2153 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \ | |
2154 "Use adaptive minimum footprint as a goal") \ | |
2155 \ | |
2156 product(uintx, AdaptiveSizePolicyWeight, 10, \ | |
2157 "Weight given to exponential resizing, between 0 and 100") \ | |
2158 \ | |
2159 product(uintx, AdaptiveTimeWeight, 25, \ | |
2160 "Weight given to time in adaptive policy, between 0 and 100") \ | |
2161 \ | |
2162 product(uintx, PausePadding, 1, \ | |
2163 "How much buffer to keep for pause time") \ | |
2164 \ | |
2165 product(uintx, PromotedPadding, 3, \ | |
2166 "How much buffer to keep for promotion failure") \ | |
2167 \ | |
2168 product(uintx, SurvivorPadding, 3, \ | |
2169 "How much buffer to keep for survivor overflow") \ | |
2170 \ | |
2171 product(uintx, AdaptivePermSizeWeight, 20, \ | |
2172 "Weight for perm gen exponential resizing, between 0 and 100") \ | |
2173 \ | |
2174 product(uintx, PermGenPadding, 3, \ | |
2175 "How much buffer to keep for perm gen sizing") \ | |
2176 \ | |
2177 product(uintx, ThresholdTolerance, 10, \ | |
2178 "Allowed collection cost difference between generations") \ | |
2179 \ | |
2180 product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \ | |
1064 | 2181 "If collection costs are within margin, reduce both by full " \ |
2182 "delta") \ | |
0 | 2183 \ |
2184 product(uintx, YoungGenerationSizeIncrement, 20, \ | |
2185 "Adaptive size percentage change in young generation") \ | |
2186 \ | |
2187 product(uintx, YoungGenerationSizeSupplement, 80, \ | |
2188 "Supplement to YoungedGenerationSizeIncrement used at startup") \ | |
2189 \ | |
2190 product(uintx, YoungGenerationSizeSupplementDecay, 8, \ | |
2191 "Decay factor to YoungedGenerationSizeSupplement") \ | |
2192 \ | |
2193 product(uintx, TenuredGenerationSizeIncrement, 20, \ | |
2194 "Adaptive size percentage change in tenured generation") \ | |
2195 \ | |
2196 product(uintx, TenuredGenerationSizeSupplement, 80, \ | |
2197 "Supplement to TenuredGenerationSizeIncrement used at startup") \ | |
2198 \ | |
2199 product(uintx, TenuredGenerationSizeSupplementDecay, 2, \ | |
2200 "Decay factor to TenuredGenerationSizeIncrement") \ | |
2201 \ | |
1783 | 2202 product(uintx, MaxGCPauseMillis, max_uintx, \ |
751 | 2203 "Adaptive size policy maximum GC pause time goal in msec, " \ |
2204 "or (G1 Only) the max. GC time per MMU time slice") \ | |
2205 \ | |
1610
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
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1589
diff
changeset
|
2206 product(uintx, GCPauseIntervalMillis, 0, \ |
751 | 2207 "Time slice for MMU specification") \ |
0 | 2208 \ |
2209 product(uintx, MaxGCMinorPauseMillis, max_uintx, \ | |
2210 "Adaptive size policy maximum GC minor pause time goal in msec") \ | |
2211 \ | |
2212 product(uintx, GCTimeRatio, 99, \ | |
2213 "Adaptive size policy application time to GC time ratio") \ | |
2214 \ | |
2215 product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \ | |
2216 "Adaptive size scale down factor for shrinking") \ | |
2217 \ | |
2218 product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \ | |
2219 "Adaptive size decays the major cost for long major intervals") \ | |
2220 \ | |
2221 product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \ | |
2222 "Time scale over which major costs decay") \ | |
2223 \ | |
2224 product(uintx, MinSurvivorRatio, 3, \ | |
2225 "Minimum ratio of young generation/survivor space size") \ | |
2226 \ | |
2227 product(uintx, InitialSurvivorRatio, 8, \ | |
2228 "Initial ratio of eden/survivor space size") \ | |
2229 \ | |
2230 product(uintx, BaseFootPrintEstimate, 256*M, \ | |
2231 "Estimate of footprint other than Java Heap") \ | |
2232 \ | |
2233 product(bool, UseGCOverheadLimit, true, \ | |
2234 "Use policy to limit of proportion of time spent in GC " \ | |
2235 "before an OutOfMemory error is thrown") \ | |
2236 \ | |
2237 product(uintx, GCTimeLimit, 98, \ | |
2238 "Limit of proportion of time spent in GC before an OutOfMemory" \ | |
2239 "error is thrown (used with GCHeapFreeLimit)") \ | |
2240 \ | |
2241 product(uintx, GCHeapFreeLimit, 2, \ | |
2242 "Minimum percentage of free space after a full GC before an " \ | |
2243 "OutOfMemoryError is thrown (used with GCTimeLimit)") \ | |
2244 \ | |
2245 develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \ | |
2246 "Number of consecutive collections before gc time limit fires") \ | |
2247 \ | |
2248 product(bool, PrintAdaptiveSizePolicy, false, \ | |
2249 "Print information about AdaptiveSizePolicy") \ | |
2250 \ | |
2251 product(intx, PrefetchCopyIntervalInBytes, -1, \ | |
2252 "How far ahead to prefetch destination area (<= 0 means off)") \ | |
2253 \ | |
2254 product(intx, PrefetchScanIntervalInBytes, -1, \ | |
2255 "How far ahead to prefetch scan area (<= 0 means off)") \ | |
2256 \ | |
2257 product(intx, PrefetchFieldsAhead, -1, \ | |
2258 "How many fields ahead to prefetch in oop scan (<= 0 means off)") \ | |
2259 \ | |
2260 develop(bool, UsePrefetchQueue, true, \ | |
2261 "Use the prefetch queue during PS promotion") \ | |
2262 \ | |
2263 diagnostic(bool, VerifyBeforeExit, trueInDebug, \ | |
2264 "Verify system before exiting") \ | |
2265 \ | |
2266 diagnostic(bool, VerifyBeforeGC, false, \ | |
2267 "Verify memory system before GC") \ | |
2268 \ | |
2269 diagnostic(bool, VerifyAfterGC, false, \ | |
2270 "Verify memory system after GC") \ | |
2271 \ | |
2272 diagnostic(bool, VerifyDuringGC, false, \ | |
2273 "Verify memory system during GC (between phases)") \ | |
2274 \ | |
390 | 2275 diagnostic(bool, GCParallelVerificationEnabled, true, \ |
2276 "Enable parallel memory system verification") \ | |
2277 \ | |
1166 | 2278 diagnostic(bool, DeferInitialCardMark, false, \ |
2279 "When +ReduceInitialCardMarks, explicitly defer any that " \ | |
2280 "may arise from new_pre_store_barrier") \ | |
2281 \ | |
0 | 2282 diagnostic(bool, VerifyRememberedSets, false, \ |
2283 "Verify GC remembered sets") \ | |
2284 \ | |
2285 diagnostic(bool, VerifyObjectStartArray, true, \ | |
2286 "Verify GC object start array if verify before/after") \ | |
2287 \ | |
2288 product(bool, DisableExplicitGC, false, \ | |
2289 "Tells whether calling System.gc() does a full GC") \ | |
2290 \ | |
2291 notproduct(bool, CheckMemoryInitialization, false, \ | |
2292 "Checks memory initialization") \ | |
2293 \ | |
2294 product(bool, CollectGen0First, false, \ | |
2295 "Collect youngest generation before each full GC") \ | |
2296 \ | |
2297 diagnostic(bool, BindCMSThreadToCPU, false, \ | |
2298 "Bind CMS Thread to CPU if possible") \ | |
2299 \ | |
2300 diagnostic(uintx, CPUForCMSThread, 0, \ | |
2301 "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \ | |
2302 \ | |
2303 product(bool, BindGCTaskThreadsToCPUs, false, \ | |
2304 "Bind GCTaskThreads to CPUs if possible") \ | |
2305 \ | |
2306 product(bool, UseGCTaskAffinity, false, \ | |
2307 "Use worker affinity when asking for GCTasks") \ | |
2308 \ | |
2309 product(uintx, ProcessDistributionStride, 4, \ | |
2310 "Stride through processors when distributing processes") \ | |
2311 \ | |
2312 product(uintx, CMSCoordinatorYieldSleepCount, 10, \ | |
2313 "number of times the coordinator GC thread will sleep while " \ | |
2314 "yielding before giving up and resuming GC") \ | |
2315 \ | |
2316 product(uintx, CMSYieldSleepCount, 0, \ | |
2317 "number of times a GC thread (minus the coordinator) " \ | |
2318 "will sleep while yielding before giving up and resuming GC") \ | |
2319 \ | |
2320 /* gc tracing */ \ | |
2321 manageable(bool, PrintGC, false, \ | |
2322 "Print message at garbage collect") \ | |
2323 \ | |
2324 manageable(bool, PrintGCDetails, false, \ | |
2325 "Print more details at garbage collect") \ | |
2326 \ | |
2327 manageable(bool, PrintGCDateStamps, false, \ | |
2328 "Print date stamps at garbage collect") \ | |
2329 \ | |
2330 manageable(bool, PrintGCTimeStamps, false, \ | |
2331 "Print timestamps at garbage collect") \ | |
2332 \ | |
2333 product(bool, PrintGCTaskTimeStamps, false, \ | |
2334 "Print timestamps for individual gc worker thread tasks") \ | |
2335 \ | |
2336 develop(intx, ConcGCYieldTimeout, 0, \ | |
2337 "If non-zero, assert that GC threads yield within this # of ms.") \ | |
2338 \ | |
2339 notproduct(bool, TraceMarkSweep, false, \ | |
2340 "Trace mark sweep") \ | |
2341 \ | |
2342 product(bool, PrintReferenceGC, false, \ | |
2343 "Print times spent handling reference objects during GC " \ | |
2344 " (enabled only when PrintGCDetails)") \ | |
2345 \ | |
2346 develop(bool, TraceReferenceGC, false, \ | |
2347 "Trace handling of soft/weak/final/phantom references") \ | |
2348 \ | |
2349 develop(bool, TraceFinalizerRegistration, false, \ | |
2350 "Trace registration of final references") \ | |
2351 \ | |
2352 notproduct(bool, TraceScavenge, false, \ | |
2353 "Trace scavenge") \ | |
2354 \ | |
2355 product_rw(bool, TraceClassLoading, false, \ | |
2356 "Trace all classes loaded") \ | |
2357 \ | |
2358 product(bool, TraceClassLoadingPreorder, false, \ | |
2359 "Trace all classes loaded in order referenced (not loaded)") \ | |
2360 \ | |
2361 product_rw(bool, TraceClassUnloading, false, \ | |
2362 "Trace unloading of classes") \ | |
2363 \ | |
2364 product_rw(bool, TraceLoaderConstraints, false, \ | |
2365 "Trace loader constraints") \ | |
2366 \ | |
2367 product(bool, TraceGen0Time, false, \ | |
2368 "Trace accumulated time for Gen 0 collection") \ | |
2369 \ | |
2370 product(bool, TraceGen1Time, false, \ | |
2371 "Trace accumulated time for Gen 1 collection") \ | |
2372 \ | |
2373 product(bool, PrintTenuringDistribution, false, \ | |
2374 "Print tenuring age information") \ | |
2375 \ | |
2376 product_rw(bool, PrintHeapAtGC, false, \ | |
2377 "Print heap layout before and after each GC") \ | |
2378 \ | |
838
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diff
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|
2379 product_rw(bool, PrintHeapAtGCExtended, false, \ |
0316eac49d5a
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
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779
diff
changeset
|
2380 "Prints extended information about the layout of the heap " \ |
0316eac49d5a
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
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779
diff
changeset
|
2381 "when -XX:+PrintHeapAtGC is set") \ |
0316eac49d5a
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779
diff
changeset
|
2382 \ |
0 | 2383 product(bool, PrintHeapAtSIGBREAK, true, \ |
2384 "Print heap layout in response to SIGBREAK") \ | |
2385 \ | |
615
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
2386 manageable(bool, PrintClassHistogramBeforeFullGC, false, \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
2387 "Print a class histogram before any major stop-world GC") \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
2388 \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
2389 manageable(bool, PrintClassHistogramAfterFullGC, false, \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
2390 "Print a class histogram after any major stop-world GC") \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
2391 \ |
0 | 2392 manageable(bool, PrintClassHistogram, false, \ |
2393 "Print a histogram of class instances") \ | |
2394 \ | |
2395 develop(bool, TraceWorkGang, false, \ | |
2396 "Trace activities of work gangs") \ | |
2397 \ | |
2398 product(bool, TraceParallelOldGCTasks, false, \ | |
2399 "Trace multithreaded GC activity") \ | |
2400 \ | |
2401 develop(bool, TraceBlockOffsetTable, false, \ | |
2402 "Print BlockOffsetTable maps") \ | |
2403 \ | |
2404 develop(bool, TraceCardTableModRefBS, false, \ | |
2405 "Print CardTableModRefBS maps") \ | |
2406 \ | |
2407 develop(bool, TraceGCTaskManager, false, \ | |
2408 "Trace actions of the GC task manager") \ | |
2409 \ | |
2410 develop(bool, TraceGCTaskQueue, false, \ | |
2411 "Trace actions of the GC task queues") \ | |
2412 \ | |
4095
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4067
diff
changeset
|
2413 diagnostic(bool, TraceGCTaskThread, false, \ |
0 | 2414 "Trace actions of the GC task threads") \ |
2415 \ | |
2416 product(bool, PrintParallelOldGCPhaseTimes, false, \ | |
2417 "Print the time taken by each parallel old gc phase." \ | |
2418 "PrintGCDetails must also be enabled.") \ | |
2419 \ | |
2420 develop(bool, TraceParallelOldGCMarkingPhase, false, \ | |
2421 "Trace parallel old gc marking phase") \ | |
2422 \ | |
2423 develop(bool, TraceParallelOldGCSummaryPhase, false, \ | |
2424 "Trace parallel old gc summary phase") \ | |
2425 \ | |
2426 develop(bool, TraceParallelOldGCCompactionPhase, false, \ | |
2427 "Trace parallel old gc compaction phase") \ | |
2428 \ | |
2429 develop(bool, TraceParallelOldGCDensePrefix, false, \ | |
2430 "Trace parallel old gc dense prefix computation") \ | |
2431 \ | |
2432 develop(bool, IgnoreLibthreadGPFault, false, \ | |
2433 "Suppress workaround for libthread GP fault") \ | |
2434 \ | |
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
|
2435 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
|
2436 "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
|
2437 "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
|
2438 \ |
3767
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3418
diff
changeset
|
2439 /* GC log rotation setting */ \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3418
diff
changeset
|
2440 \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3418
diff
changeset
|
2441 product(bool, UseGCLogFileRotation, false, \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3418
diff
changeset
|
2442 "Prevent large gclog file for long running app. " \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3418
diff
changeset
|
2443 "Requires -Xloggc:<filename>") \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3418
diff
changeset
|
2444 \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3418
diff
changeset
|
2445 product(uintx, NumberOfGCLogFiles, 0, \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3418
diff
changeset
|
2446 "Number of gclog files in rotation, " \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3418
diff
changeset
|
2447 "Default: 0, no rotation") \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3418
diff
changeset
|
2448 \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3418
diff
changeset
|
2449 product(uintx, GCLogFileSize, 0, \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3418
diff
changeset
|
2450 "GC log file size, Default: 0 bytes, no rotation " \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3418
diff
changeset
|
2451 "Only valid with UseGCLogFileRotation") \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3418
diff
changeset
|
2452 \ |
0 | 2453 /* JVMTI heap profiling */ \ |
2454 \ | |
2455 diagnostic(bool, TraceJVMTIObjectTagging, false, \ | |
2456 "Trace JVMTI object tagging calls") \ | |
2457 \ | |
2458 diagnostic(bool, VerifyBeforeIteration, false, \ | |
2459 "Verify memory system before JVMTI iteration") \ | |
2460 \ | |
2461 /* compiler interface */ \ | |
2462 \ | |
2463 develop(bool, CIPrintCompilerName, false, \ | |
2464 "when CIPrint is active, print the name of the active compiler") \ | |
2465 \ | |
2466 develop(bool, CIPrintCompileQueue, false, \ | |
2467 "display the contents of the compile queue whenever a " \ | |
2468 "compilation is enqueued") \ | |
2469 \ | |
2470 develop(bool, CIPrintRequests, false, \ | |
2471 "display every request for compilation") \ | |
2472 \ | |
2473 product(bool, CITime, false, \ | |
2474 "collect timing information for compilation") \ | |
2475 \ | |
2476 develop(bool, CITimeEach, false, \ | |
2477 "display timing information after each successful compilation") \ | |
2478 \ | |
2479 develop(bool, CICountOSR, true, \ | |
2480 "use a separate counter when assigning ids to osr compilations") \ | |
2481 \ | |
2482 develop(bool, CICompileNatives, true, \ | |
2483 "compile native methods if supported by the compiler") \ | |
2484 \ | |
2485 develop_pd(bool, CICompileOSR, \ | |
2486 "compile on stack replacement methods if supported by the " \ | |
2487 "compiler") \ | |
2488 \ | |
2489 develop(bool, CIPrintMethodCodes, false, \ | |
2490 "print method bytecodes of the compiled code") \ | |
2491 \ | |
2492 develop(bool, CIPrintTypeFlow, false, \ | |
2493 "print the results of ciTypeFlow analysis") \ | |
2494 \ | |
2495 develop(bool, CITraceTypeFlow, false, \ | |
2496 "detailed per-bytecode tracing of ciTypeFlow analysis") \ | |
2497 \ | |
2498 develop(intx, CICloneLoopTestLimit, 100, \ | |
2499 "size limit for blocks heuristically cloned in ciTypeFlow") \ | |
2500 \ | |
2403 | 2501 develop(intx, OSROnlyBCI, -1, \ |
2502 "OSR only at this bci. Negative values mean exclude that bci") \ | |
2503 \ | |
0 | 2504 /* temp diagnostics */ \ |
2505 \ | |
2506 diagnostic(bool, TraceRedundantCompiles, false, \ | |
2507 "Have compile broker print when a request already in the queue is"\ | |
2508 " requested again") \ | |
2509 \ | |
2510 diagnostic(bool, InitialCompileFast, false, \ | |
2511 "Initial compile at CompLevel_fast_compile") \ | |
2512 \ | |
2513 diagnostic(bool, InitialCompileReallyFast, false, \ | |
2514 "Initial compile at CompLevel_really_fast_compile (no profile)") \ | |
2515 \ | |
2516 diagnostic(bool, FullProfileOnReInterpret, true, \ | |
2517 "On re-interpret unc-trap compile next at CompLevel_fast_compile")\ | |
2518 \ | |
2519 /* compiler */ \ | |
2520 \ | |
2521 product(intx, CICompilerCount, CI_COMPILER_COUNT, \ | |
2522 "Number of compiler threads to run") \ | |
2523 \ | |
5336
f536a459c2d3
re-enable graph caching and the priority compilation queue
Lukas Stadler <lukas.stadler@jku.at>
parents:
5334
diff
changeset
|
2524 product(intx, CompilationPolicyChoice, NOT_GRAAL(0) GRAAL_ONLY(4), \ |
0 | 2525 "which compilation policy (0/1)") \ |
2526 \ | |
2527 develop(bool, UseStackBanging, true, \ | |
2528 "use stack banging for stack overflow checks (required for " \ | |
2529 "proper StackOverflow handling; disable only to measure cost " \ | |
2530 "of stackbanging)") \ | |
2531 \ | |
2532 develop(bool, Use24BitFPMode, true, \ | |
2533 "Set 24-bit FPU mode on a per-compile basis ") \ | |
2534 \ | |
2535 develop(bool, Use24BitFP, true, \ | |
2536 "use FP instructions that produce 24-bit precise results") \ | |
2537 \ | |
2538 develop(bool, UseStrictFP, true, \ | |
2539 "use strict fp if modifier strictfp is set") \ | |
2540 \ | |
2541 develop(bool, GenerateSynchronizationCode, true, \ | |
2542 "generate locking/unlocking code for synchronized methods and " \ | |
2543 "monitors") \ | |
2544 \ | |
2545 develop(bool, GenerateCompilerNullChecks, true, \ | |
2546 "Generate explicit null checks for loads/stores/calls") \ | |
2547 \ | |
2548 develop(bool, GenerateRangeChecks, true, \ | |
2549 "Generate range checks for array accesses") \ | |
2550 \ | |
2551 develop_pd(bool, ImplicitNullChecks, \ | |
2552 "generate code for implicit null checks") \ | |
2553 \ | |
2554 product(bool, PrintSafepointStatistics, false, \ | |
2555 "print statistics about safepoint synchronization") \ | |
2556 \ | |
2557 product(intx, PrintSafepointStatisticsCount, 300, \ | |
2558 "total number of safepoint statistics collected " \ | |
2559 "before printing them out") \ | |
2560 \ | |
2561 product(intx, PrintSafepointStatisticsTimeout, -1, \ | |
2562 "print safepoint statistics only when safepoint takes" \ | |
2563 " more than PrintSafepointSatisticsTimeout in millis") \ | |
2564 \ | |
1321
0f6600cee529
6934758: Expose the break down of clean up task time during safepoint.
xlu
parents:
1288
diff
changeset
|
2565 product(bool, TraceSafepointCleanupTime, false, \ |
0f6600cee529
6934758: Expose the break down of clean up task time during safepoint.
xlu
parents:
1288
diff
changeset
|
2566 "print the break down of clean up tasks performed during" \ |
0f6600cee529
6934758: Expose the break down of clean up task time during safepoint.
xlu
parents:
1288
diff
changeset
|
2567 " safepoint") \ |
0f6600cee529
6934758: Expose the break down of clean up task time during safepoint.
xlu
parents:
1288
diff
changeset
|
2568 \ |
0 | 2569 develop(bool, InlineAccessors, true, \ |
2570 "inline accessor methods (get/set)") \ | |
2571 \ | |
2572 product(bool, Inline, true, \ | |
2573 "enable inlining") \ | |
2574 \ | |
2575 product(bool, ClipInlining, true, \ | |
2576 "clip inlining if aggregate method exceeds DesiredMethodLimit") \ | |
2577 \ | |
2578 develop(bool, UseCHA, true, \ | |
2579 "enable CHA") \ | |
2580 \ | |
2581 product(bool, UseTypeProfile, true, \ | |
2582 "Check interpreter profile for historically monomorphic calls") \ | |
2583 \ | |
2584 product(intx, TypeProfileMajorReceiverPercent, 90, \ | |
2585 "% of major receiver type to all profiled receivers") \ | |
2586 \ | |
2587 notproduct(bool, TimeCompiler, false, \ | |
2588 "time the compiler") \ | |
2589 \ | |
2590 notproduct(bool, TimeCompiler2, false, \ | |
2591 "detailed time the compiler (requires +TimeCompiler)") \ | |
2592 \ | |
2593 diagnostic(bool, PrintInlining, false, \ | |
2594 "prints inlining optimizations") \ | |
2595 \ | |
2596 diagnostic(bool, PrintIntrinsics, false, \ | |
2597 "prints attempted and successful inlining of intrinsics") \ | |
2598 \ | |
775
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
726
diff
changeset
|
2599 product(bool, UseCountLeadingZerosInstruction, false, \ |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
726
diff
changeset
|
2600 "Use count leading zeros instruction") \ |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
726
diff
changeset
|
2601 \ |
643
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
642
diff
changeset
|
2602 product(bool, UsePopCountInstruction, false, \ |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
642
diff
changeset
|
2603 "Use population count instruction") \ |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
642
diff
changeset
|
2604 \ |
0 | 2605 diagnostic(ccstrlist, DisableIntrinsic, "", \ |
2606 "do not expand intrinsics whose (internal) names appear here") \ | |
2607 \ | |
2608 develop(bool, StressReflectiveCode, false, \ | |
2609 "Use inexact types at allocations, etc., to test reflection") \ | |
2610 \ | |
2611 develop(bool, EagerInitialization, false, \ | |
2612 "Eagerly initialize classes if possible") \ | |
2613 \ | |
2614 develop(bool, TraceMethodReplacement, false, \ | |
2615 "Print when methods are replaced do to recompilation") \ | |
2616 \ | |
2617 develop(bool, PrintMethodFlushing, false, \ | |
2618 "print the nmethods being flushed") \ | |
2619 \ | |
2620 notproduct(bool, LogMultipleMutexLocking, false, \ | |
2621 "log locking and unlocking of mutexes (only if multiple locks " \ | |
2622 "are held)") \ | |
2623 \ | |
2624 develop(bool, UseRelocIndex, false, \ | |
2625 "use an index to speed random access to relocations") \ | |
2626 \ | |
2627 develop(bool, StressCodeBuffers, false, \ | |
2628 "Exercise code buffer expansion and other rare state changes") \ | |
2629 \ | |
2630 diagnostic(bool, DebugNonSafepoints, trueInDebug, \ | |
2631 "Generate extra debugging info for non-safepoints in nmethods") \ | |
2632 \ | |
2633 diagnostic(bool, DebugInlinedCalls, true, \ | |
2634 "If false, restricts profiled locations to the root method only") \ | |
2635 \ | |
4066 | 2636 product(bool, PrintVMOptions, false, \ |
1150 | 2637 "Print flags that appeared on the command line") \ |
0 | 2638 \ |
564 | 2639 product(bool, IgnoreUnrecognizedVMOptions, false, \ |
2640 "Ignore unrecognized VM options") \ | |
2641 \ | |
1150 | 2642 product(bool, PrintCommandLineFlags, false, \ |
2643 "Print flags specified on command line or set by ergonomics") \ | |
2644 \ | |
2645 product(bool, PrintFlagsInitial, false, \ | |
2646 "Print all VM flags before argument processing and exit VM") \ | |
2647 \ | |
2648 product(bool, PrintFlagsFinal, false, \ | |
2649 "Print all VM flags after argument and ergonomic processing") \ | |
2650 \ | |
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1749
diff
changeset
|
2651 notproduct(bool, PrintFlagsWithComments, false, \ |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1749
diff
changeset
|
2652 "Print all VM flags with default values and descriptions and exit")\ |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1749
diff
changeset
|
2653 \ |
0 | 2654 diagnostic(bool, SerializeVMOutput, true, \ |
2655 "Use a mutex to serialize output to tty and hotspot.log") \ | |
2656 \ | |
2657 diagnostic(bool, DisplayVMOutput, true, \ | |
2658 "Display all VM output on the tty, independently of LogVMOutput") \ | |
2659 \ | |
2660 diagnostic(bool, LogVMOutput, trueInDebug, \ | |
2661 "Save VM output to hotspot.log, or to LogFile") \ | |
2662 \ | |
2663 diagnostic(ccstr, LogFile, NULL, \ | |
2664 "If LogVMOutput is on, save VM output to this file [hotspot.log]") \ | |
2665 \ | |
2666 product(ccstr, ErrorFile, NULL, \ | |
2667 "If an error occurs, save the error data to this file " \ | |
2668 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \ | |
2669 \ | |
2670 product(bool, DisplayVMOutputToStderr, false, \ | |
2671 "If DisplayVMOutput is true, display all VM output to stderr") \ | |
2672 \ | |
2673 product(bool, DisplayVMOutputToStdout, false, \ | |
2674 "If DisplayVMOutput is true, display all VM output to stdout") \ | |
2675 \ | |
2676 product(bool, UseHeavyMonitors, false, \ | |
2677 "use heavyweight instead of lightweight Java monitors") \ | |
2678 \ | |
6162 | 2679 product(bool, PrintStringTableStatistics, false, \ |
2680 "print statistics about the StringTable and SymbolTable") \ | |
2681 \ | |
0 | 2682 notproduct(bool, PrintSymbolTableSizeHistogram, false, \ |
2683 "print histogram of the symbol table") \ | |
2684 \ | |
2685 notproduct(bool, ExitVMOnVerifyError, false, \ | |
2686 "standard exit from VM if bytecode verify error " \ | |
2687 "(only in debug mode)") \ | |
2688 \ | |
2689 notproduct(ccstr, AbortVMOnException, NULL, \ | |
2690 "Call fatal if this exception is thrown. Example: " \ | |
2691 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \ | |
2692 \ | |
1684
66c5dadb4d61
6973308: Missing zero length check before repne scas in check_klass_subtype_slow_path()
kvn
parents:
1660
diff
changeset
|
2693 notproduct(ccstr, AbortVMOnExceptionMessage, NULL, \ |
66c5dadb4d61
6973308: Missing zero length check before repne scas in check_klass_subtype_slow_path()
kvn
parents:
1660
diff
changeset
|
2694 "Call fatal if the exception pointed by AbortVMOnException " \ |
66c5dadb4d61
6973308: Missing zero length check before repne scas in check_klass_subtype_slow_path()
kvn
parents:
1660
diff
changeset
|
2695 "has this message.") \ |
66c5dadb4d61
6973308: Missing zero length check before repne scas in check_klass_subtype_slow_path()
kvn
parents:
1660
diff
changeset
|
2696 \ |
0 | 2697 develop(bool, DebugVtables, false, \ |
2698 "add debugging code to vtable dispatch") \ | |
2699 \ | |
2700 develop(bool, PrintVtables, false, \ | |
2701 "print vtables when printing klass") \ | |
2702 \ | |
2703 notproduct(bool, PrintVtableStats, false, \ | |
2704 "print vtables stats at end of run") \ | |
2705 \ | |
2706 develop(bool, TraceCreateZombies, false, \ | |
2707 "trace creation of zombie nmethods") \ | |
2708 \ | |
2709 notproduct(bool, IgnoreLockingAssertions, false, \ | |
2710 "disable locking assertions (for speed)") \ | |
2711 \ | |
2712 notproduct(bool, VerifyLoopOptimizations, false, \ | |
2713 "verify major loop optimizations") \ | |
2714 \ | |
2715 product(bool, RangeCheckElimination, true, \ | |
2716 "Split loop iterations to eliminate range checks") \ | |
2717 \ | |
2718 develop_pd(bool, UncommonNullCast, \ | |
2719 "track occurrences of null in casts; adjust compiler tactics") \ | |
2720 \ | |
2721 develop(bool, TypeProfileCasts, true, \ | |
2722 "treat casts like calls for purposes of type profiling") \ | |
2723 \ | |
2724 develop(bool, MonomorphicArrayCheck, true, \ | |
2725 "Uncommon-trap array store checks that require full type check") \ | |
2726 \ | |
1746
4b29a725c43c
6912064: type profiles need to be exploited more for dynamic language support
jrose
parents:
1692
diff
changeset
|
2727 diagnostic(bool, ProfileDynamicTypes, true, \ |
4b29a725c43c
6912064: type profiles need to be exploited more for dynamic language support
jrose
parents:
1692
diff
changeset
|
2728 "do extra type profiling and use it more aggressively") \ |
4b29a725c43c
6912064: type profiles need to be exploited more for dynamic language support
jrose
parents:
1692
diff
changeset
|
2729 \ |
0 | 2730 develop(bool, DelayCompilationDuringStartup, true, \ |
2731 "Delay invoking the compiler until main application class is " \ | |
2732 "loaded") \ | |
2733 \ | |
2734 develop(bool, CompileTheWorld, false, \ | |
2735 "Compile all methods in all classes in bootstrap class path " \ | |
2736 "(stress test)") \ | |
2737 \ | |
2738 develop(bool, CompileTheWorldPreloadClasses, true, \ | |
2739 "Preload all classes used by a class before start loading") \ | |
2740 \ | |
1188
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1179
diff
changeset
|
2741 notproduct(intx, CompileTheWorldSafepointInterval, 100, \ |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1179
diff
changeset
|
2742 "Force a safepoint every n compiles so sweeper can keep up") \ |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1179
diff
changeset
|
2743 \ |
0 | 2744 develop(bool, TraceIterativeGVN, false, \ |
2745 "Print progress during Iterative Global Value Numbering") \ | |
2746 \ | |
2747 develop(bool, FillDelaySlots, true, \ | |
2748 "Fill delay slots (on SPARC only)") \ | |
2749 \ | |
2750 develop(bool, VerifyIterativeGVN, false, \ | |
2751 "Verify Def-Use modifications during sparse Iterative Global " \ | |
2752 "Value Numbering") \ | |
2753 \ | |
2754 notproduct(bool, TracePhaseCCP, false, \ | |
2755 "Print progress during Conditional Constant Propagation") \ | |
2756 \ | |
2757 develop(bool, TimeLivenessAnalysis, false, \ | |
2758 "Time computation of bytecode liveness analysis") \ | |
2759 \ | |
2760 develop(bool, TraceLivenessGen, false, \ | |
2761 "Trace the generation of liveness analysis information") \ | |
2762 \ | |
2763 notproduct(bool, TraceLivenessQuery, false, \ | |
2764 "Trace queries of liveness analysis information") \ | |
2765 \ | |
2766 notproduct(bool, CollectIndexSetStatistics, false, \ | |
2767 "Collect information about IndexSets") \ | |
2768 \ | |
2769 develop(bool, PrintDominators, false, \ | |
2770 "Print out dominator trees for GVN") \ | |
2771 \ | |
2772 develop(bool, UseLoopSafepoints, true, \ | |
2773 "Generate Safepoint nodes in every loop") \ | |
2774 \ | |
2775 notproduct(bool, TraceCISCSpill, false, \ | |
2776 "Trace allocators use of cisc spillable instructions") \ | |
2777 \ | |
2778 notproduct(bool, TraceSpilling, false, \ | |
2779 "Trace spilling") \ | |
2780 \ | |
2781 product(bool, SplitIfBlocks, true, \ | |
2782 "Clone compares and control flow through merge points to fold " \ | |
2783 "some branches") \ | |
2784 \ | |
2785 develop(intx, FastAllocateSizeLimit, 128*K, \ | |
2786 /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \ | |
2787 "Inline allocations larger than this in doublewords must go slow")\ | |
2788 \ | |
2789 product(bool, AggressiveOpts, false, \ | |
2790 "Enable aggressive optimizations - see arguments.cpp") \ | |
2791 \ | |
192
6d13fcb3663f
6714404: Add UseStringCache switch to enable String caching under AggressiveOpts
kvn
parents:
174
diff
changeset
|
2792 product(bool, UseStringCache, false, \ |
6d13fcb3663f
6714404: Add UseStringCache switch to enable String caching under AggressiveOpts
kvn
parents:
174
diff
changeset
|
2793 "Enable String cache capabilities on String.java") \ |
6d13fcb3663f
6714404: Add UseStringCache switch to enable String caching under AggressiveOpts
kvn
parents:
174
diff
changeset
|
2794 \ |
0 | 2795 /* statistics */ \ |
2796 develop(bool, CountCompiledCalls, false, \ | |
2797 "counts method invocations") \ | |
2798 \ | |
2799 notproduct(bool, CountRuntimeCalls, false, \ | |
2800 "counts VM runtime calls") \ | |
2801 \ | |
2802 develop(bool, CountJNICalls, false, \ | |
2803 "counts jni method invocations") \ | |
2804 \ | |
2805 notproduct(bool, CountJVMCalls, false, \ | |
2806 "counts jvm method invocations") \ | |
2807 \ | |
2808 notproduct(bool, CountRemovableExceptions, false, \ | |
2809 "count exceptions that could be replaced by branches due to " \ | |
2810 "inlining") \ | |
2811 \ | |
2812 notproduct(bool, ICMissHistogram, false, \ | |
2813 "produce histogram of IC misses") \ | |
2814 \ | |
2815 notproduct(bool, PrintClassStatistics, false, \ | |
2816 "prints class statistics at end of run") \ | |
2817 \ | |
2818 notproduct(bool, PrintMethodStatistics, false, \ | |
2819 "prints method statistics at end of run") \ | |
2820 \ | |
2821 /* interpreter */ \ | |
2822 develop(bool, ClearInterpreterLocals, false, \ | |
2823 "Always clear local variables of interpreter activations upon " \ | |
2824 "entry") \ | |
2825 \ | |
2826 product_pd(bool, RewriteBytecodes, \ | |
2827 "Allow rewriting of bytecodes (bytecodes are not immutable)") \ | |
2828 \ | |
2829 product_pd(bool, RewriteFrequentPairs, \ | |
2830 "Rewrite frequently used bytecode pairs into a single bytecode") \ | |
2831 \ | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
76
diff
changeset
|
2832 diagnostic(bool, PrintInterpreter, false, \ |
0 | 2833 "Prints the generated interpreter code") \ |
2834 \ | |
2835 product(bool, UseInterpreter, true, \ | |
2836 "Use interpreter for non-compiled methods") \ | |
2837 \ | |
2838 develop(bool, UseFastSignatureHandlers, true, \ | |
2839 "Use fast signature handlers for native calls") \ | |
2840 \ | |
2841 develop(bool, UseV8InstrsOnly, false, \ | |
2842 "Use SPARC-V8 Compliant instruction subset") \ | |
2843 \ | |
2844 product(bool, UseNiagaraInstrs, false, \ | |
2845 "Use Niagara-efficient instruction subset") \ | |
2846 \ | |
2847 develop(bool, UseCASForSwap, false, \ | |
2848 "Do not use swap instructions, but only CAS (in a loop) on SPARC")\ | |
2849 \ | |
2850 product(bool, UseLoopCounter, true, \ | |
2851 "Increment invocation counter on backward branch") \ | |
2852 \ | |
2853 product(bool, UseFastEmptyMethods, true, \ | |
2854 "Use fast method entry code for empty methods") \ | |
2855 \ | |
2856 product(bool, UseFastAccessorMethods, true, \ | |
2857 "Use fast method entry code for accessor methods") \ | |
2858 \ | |
2859 product_pd(bool, UseOnStackReplacement, \ | |
2860 "Use on stack replacement, calls runtime if invoc. counter " \ | |
2861 "overflows in loop") \ | |
2862 \ | |
2863 notproduct(bool, TraceOnStackReplacement, false, \ | |
2864 "Trace on stack replacement") \ | |
2865 \ | |
2866 develop(bool, PoisonOSREntry, true, \ | |
2867 "Detect abnormal calls to OSR code") \ | |
2868 \ | |
2869 product_pd(bool, PreferInterpreterNativeStubs, \ | |
2870 "Use always interpreter stubs for native methods invoked via " \ | |
2871 "interpreter") \ | |
2872 \ | |
2873 develop(bool, CountBytecodes, false, \ | |
2874 "Count number of bytecodes executed") \ | |
2875 \ | |
2876 develop(bool, PrintBytecodeHistogram, false, \ | |
2877 "Print histogram of the executed bytecodes") \ | |
2878 \ | |
2879 develop(bool, PrintBytecodePairHistogram, false, \ | |
2880 "Print histogram of the executed bytecode pairs") \ | |
2881 \ | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
76
diff
changeset
|
2882 diagnostic(bool, PrintSignatureHandlers, false, \ |
0 | 2883 "Print code generated for native method signature handlers") \ |
2884 \ | |
2885 develop(bool, VerifyOops, false, \ | |
2886 "Do plausibility checks for oops") \ | |
2887 \ | |
2888 develop(bool, CheckUnhandledOops, false, \ | |
2889 "Check for unhandled oops in VM code") \ | |
2890 \ | |
2891 develop(bool, VerifyJNIFields, trueInDebug, \ | |
2892 "Verify jfieldIDs for instance fields") \ | |
2893 \ | |
2894 notproduct(bool, VerifyJNIEnvThread, false, \ | |
2895 "Verify JNIEnv.thread == Thread::current() when entering VM " \ | |
2896 "from JNI") \ | |
2897 \ | |
2898 develop(bool, VerifyFPU, false, \ | |
2899 "Verify FPU state (check for NaN's, etc.)") \ | |
2900 \ | |
2901 develop(bool, VerifyThread, false, \ | |
2902 "Watch the thread register for corruption (SPARC only)") \ | |
2903 \ | |
2904 develop(bool, VerifyActivationFrameSize, false, \ | |
2905 "Verify that activation frame didn't become smaller than its " \ | |
2906 "minimal size") \ | |
2907 \ | |
2908 develop(bool, TraceFrequencyInlining, false, \ | |
2909 "Trace frequency based inlining") \ | |
2910 \ | |
2911 notproduct(bool, TraceTypeProfile, false, \ | |
2912 "Trace type profile") \ | |
2913 \ | |
2914 develop_pd(bool, InlineIntrinsics, \ | |
2915 "Inline intrinsics that can be statically resolved") \ | |
2916 \ | |
2917 product_pd(bool, ProfileInterpreter, \ | |
2918 "Profile at the bytecode level during interpretation") \ | |
2919 \ | |
2920 develop_pd(bool, ProfileTraps, \ | |
2921 "Profile deoptimization traps at the bytecode level") \ | |
2922 \ | |
2923 product(intx, ProfileMaturityPercentage, 20, \ | |
2924 "number of method invocations/branches (expressed as % of " \ | |
2925 "CompileThreshold) before using the method's profile") \ | |
2926 \ | |
2927 develop(bool, PrintMethodData, false, \ | |
2928 "Print the results of +ProfileInterpreter at end of run") \ | |
2929 \ | |
2930 develop(bool, VerifyDataPointer, trueInDebug, \ | |
2931 "Verify the method data pointer during interpreter profiling") \ | |
2932 \ | |
2933 develop(bool, VerifyCompiledCode, false, \ | |
2934 "Include miscellaneous runtime verifications in nmethod code; " \ | |
1064 | 2935 "default off because it disturbs nmethod size heuristics") \ |
0 | 2936 \ |
1119
547f81740344
6361589: Print out stack trace for target thread of GC crash
minqi
parents:
1064
diff
changeset
|
2937 notproduct(bool, CrashGCForDumpingJavaThread, false, \ |
547f81740344
6361589: Print out stack trace for target thread of GC crash
minqi
parents:
1064
diff
changeset
|
2938 "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
|
2939 "Test only") \ |
0 | 2940 \ |
2941 /* compilation */ \ | |
2942 product(bool, UseCompiler, true, \ | |
2943 "use compilation") \ | |
2944 \ | |
2945 develop(bool, TraceCompilationPolicy, false, \ | |
2946 "Trace compilation policy") \ | |
2947 \ | |
2948 develop(bool, TimeCompilationPolicy, false, \ | |
2949 "Time the compilation policy") \ | |
2950 \ | |
2951 product(bool, UseCounterDecay, true, \ | |
2952 "adjust recompilation counters") \ | |
2953 \ | |
2954 develop(intx, CounterHalfLifeTime, 30, \ | |
2955 "half-life time of invocation counters (in secs)") \ | |
2956 \ | |
2957 develop(intx, CounterDecayMinIntervalLength, 500, \ | |
2958 "Min. ms. between invocation of CounterDecay") \ | |
2959 \ | |
2960 product(bool, AlwaysCompileLoopMethods, false, \ | |
2961 "when using recompilation, never interpret methods " \ | |
2962 "containing loops") \ | |
2963 \ | |
2964 product(bool, DontCompileHugeMethods, true, \ | |
2965 "don't compile methods > HugeMethodLimit") \ | |
2966 \ | |
2967 /* Bytecode escape analysis estimation. */ \ | |
2968 product(bool, EstimateArgEscape, true, \ | |
2969 "Analyze bytecodes to estimate escape state of arguments") \ | |
2970 \ | |
2971 product(intx, BCEATraceLevel, 0, \ | |
2972 "How much tracing to do of bytecode escape analysis estimates") \ | |
2973 \ | |
2974 product(intx, MaxBCEAEstimateLevel, 5, \ | |
2975 "Maximum number of nested calls that are analyzed by BC EA.") \ | |
2976 \ | |
2977 product(intx, MaxBCEAEstimateSize, 150, \ | |
2978 "Maximum bytecode size of a method to be analyzed by BC EA.") \ | |
2979 \ | |
2980 product(intx, AllocatePrefetchStyle, 1, \ | |
2981 "0 = no prefetch, " \ | |
2982 "1 = prefetch instructions for each allocation, " \ | |
1367
9e321dcfa5b7
6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents:
1366
diff
changeset
|
2983 "2 = use TLAB watermark to gate allocation prefetch, " \ |
9e321dcfa5b7
6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents:
1366
diff
changeset
|
2984 "3 = use BIS instruction on Sparc for allocation prefetch") \ |
0 | 2985 \ |
2986 product(intx, AllocatePrefetchDistance, -1, \ | |
2987 "Distance to prefetch ahead of allocation pointer") \ | |
2988 \ | |
3854 | 2989 product(intx, AllocatePrefetchLines, 3, \ |
2990 "Number of lines to prefetch ahead of array allocation pointer") \ | |
2991 \ | |
2992 product(intx, AllocateInstancePrefetchLines, 1, \ | |
2993 "Number of lines to prefetch ahead of instance allocation pointer") \ | |
0 | 2994 \ |
2995 product(intx, AllocatePrefetchStepSize, 16, \ | |
2996 "Step size in bytes of sequential prefetch instructions") \ | |
2997 \ | |
2998 product(intx, AllocatePrefetchInstr, 0, \ | |
2999 "Prefetch instruction to prefetch ahead of allocation pointer") \ | |
3000 \ | |
3001 product(intx, ReadPrefetchInstr, 0, \ | |
3002 "Prefetch instruction to prefetch ahead") \ | |
3003 \ | |
3903 | 3004 product(uintx, ArraycopySrcPrefetchDistance, 0, \ |
3005 "Distance to prefetch source array in arracopy") \ | |
3006 \ | |
3007 product(uintx, ArraycopyDstPrefetchDistance, 0, \ | |
3008 "Distance to prefetch destination array in arracopy") \ | |
3009 \ | |
0 | 3010 /* deoptimization */ \ |
2607
008adfd6d850
Fixed the stateBefore of invokes and monitorenter instructions to include the arguments of the instruction.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2492
diff
changeset
|
3011 product(bool, TraceDeoptimization, false, \ |
0 | 3012 "Trace deoptimization") \ |
3013 \ | |
4668
3dbcd1013cc8
added flag PrintDeoptimizationDetails
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4561
diff
changeset
|
3014 product(bool, PrintDeoptimizationDetails, false, \ |
3dbcd1013cc8
added flag PrintDeoptimizationDetails
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4561
diff
changeset
|
3015 "Print more information about deoptimization") \ |
3dbcd1013cc8
added flag PrintDeoptimizationDetails
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4561
diff
changeset
|
3016 \ |
0 | 3017 develop(bool, DebugDeoptimization, false, \ |
3018 "Tracing various information while debugging deoptimization") \ | |
3019 \ | |
3020 product(intx, SelfDestructTimer, 0, \ | |
3021 "Will cause VM to terminate after a given time (in minutes) " \ | |
3022 "(0 means off)") \ | |
3023 \ | |
3024 product(intx, MaxJavaStackTraceDepth, 1024, \ | |
3025 "Max. no. of lines in the stack trace for Java exceptions " \ | |
3026 "(0 means all)") \ | |
3027 \ | |
3328
277d0f6ca64d
7005503: Make GuaranteedSafepointInterval a diagnostic flag
kevinw
parents:
3255
diff
changeset
|
3028 NOT_EMBEDDED(diagnostic(intx, GuaranteedSafepointInterval, 1000, \ |
0 | 3029 "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
|
3030 "(0 means none)")) \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
3031 \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
3032 EMBEDDED_ONLY(product(intx, GuaranteedSafepointInterval, 0, \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
3033 "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
|
3034 "(0 means none)")) \ |
0 | 3035 \ |
3036 product(intx, SafepointTimeoutDelay, 10000, \ | |
3037 "Delay in milliseconds for option SafepointTimeout") \ | |
3038 \ | |
4945
cfdfbeac0a5b
7145345: Code cache sweeper must cooperate with safepoints
iveresov
parents:
4875
diff
changeset
|
3039 product(intx, NmethodSweepFraction, 16, \ |
0 | 3040 "Number of invocations of sweeper to cover all nmethods") \ |
3041 \ | |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1513
diff
changeset
|
3042 product(intx, NmethodSweepCheckInterval, 5, \ |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1513
diff
changeset
|
3043 "Compilers wake up every n seconds to possibly sweep nmethods") \ |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1513
diff
changeset
|
3044 \ |
3384
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
3045 notproduct(bool, LogSweeper, false, \ |
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
3046 "Keep a ring buffer of sweeper activity") \ |
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
3047 \ |
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
3048 notproduct(intx, SweeperLogEntries, 1024, \ |
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
3049 "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
|
3050 \ |
0 | 3051 notproduct(intx, MemProfilingInterval, 500, \ |
3052 "Time between each invocation of the MemProfiler") \ | |
3053 \ | |
3054 develop(intx, MallocCatchPtr, -1, \ | |
3055 "Hit breakpoint when mallocing/freeing this pointer") \ | |
3056 \ | |
3057 notproduct(intx, AssertRepeat, 1, \ | |
3058 "number of times to evaluate expression in assert " \ | |
3059 "(to estimate overhead); only works with -DUSE_REPEATED_ASSERTS") \ | |
3060 \ | |
3061 notproduct(ccstrlist, SuppressErrorAt, "", \ | |
3062 "List of assertions (file:line) to muzzle") \ | |
3063 \ | |
3064 notproduct(uintx, HandleAllocationLimit, 1024, \ | |
3065 "Threshold for HandleMark allocation when +TraceHandleAllocation "\ | |
3066 "is used") \ | |
3067 \ | |
3068 develop(uintx, TotalHandleAllocationLimit, 1024, \ | |
3069 "Threshold for total handle allocation when " \ | |
3070 "+TraceHandleAllocation is used") \ | |
3071 \ | |
3072 develop(intx, StackPrintLimit, 100, \ | |
3073 "number of stack frames to print in VM-level stack dump") \ | |
3074 \ | |
3075 notproduct(intx, MaxElementPrintSize, 256, \ | |
3076 "maximum number of elements to print") \ | |
3077 \ | |
3078 notproduct(intx, MaxSubklassPrintSize, 4, \ | |
3079 "maximum number of subklasses to print when printing klass") \ | |
3080 \ | |
1157
c3b315a0d58a
6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents:
1150
diff
changeset
|
3081 product(intx, MaxInlineLevel, 9, \ |
0 | 3082 "maximum number of nested calls that are inlined") \ |
3083 \ | |
1157
c3b315a0d58a
6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents:
1150
diff
changeset
|
3084 product(intx, MaxRecursiveInlineLevel, 1, \ |
0 | 3085 "maximum number of nested recursive calls that are inlined") \ |
3086 \ | |
675 | 3087 product_pd(intx, InlineSmallCode, \ |
0 | 3088 "Only inline already compiled methods if their code size is " \ |
3089 "less than this") \ | |
3090 \ | |
3091 product(intx, MaxInlineSize, 35, \ | |
3092 "maximum bytecode size of a method to be inlined") \ | |
3093 \ | |
3094 product_pd(intx, FreqInlineSize, \ | |
3095 "maximum bytecode size of a frequent method to be inlined") \ | |
3096 \ | |
1157
c3b315a0d58a
6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents:
1150
diff
changeset
|
3097 product(intx, MaxTrivialSize, 6, \ |
0 | 3098 "maximum bytecode size of a trivial method to be inlined") \ |
3099 \ | |
1157
c3b315a0d58a
6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents:
1150
diff
changeset
|
3100 product(intx, MinInliningThreshold, 250, \ |
0 | 3101 "min. invocation count a method needs to have to be inlined") \ |
3102 \ | |
3103 develop(intx, AlignEntryCode, 4, \ | |
3104 "aligns entry code to specified value (in bytes)") \ | |
3105 \ | |
3106 develop(intx, MethodHistogramCutoff, 100, \ | |
3107 "cutoff value for method invoc. histogram (+CountCalls)") \ | |
3108 \ | |
3109 develop(intx, ProfilerNumberOfInterpretedMethods, 25, \ | |
3110 "# of interpreted methods to show in profile") \ | |
3111 \ | |
3112 develop(intx, ProfilerNumberOfCompiledMethods, 25, \ | |
3113 "# of compiled methods to show in profile") \ | |
3114 \ | |
3115 develop(intx, ProfilerNumberOfStubMethods, 25, \ | |
3116 "# of stub methods to show in profile") \ | |
3117 \ | |
3118 develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \ | |
3119 "# of runtime stub nodes to show in profile") \ | |
3120 \ | |
3121 product(intx, ProfileIntervalsTicks, 100, \ | |
3122 "# of ticks between printing of interval profile " \ | |
3123 "(+ProfileIntervals)") \ | |
3124 \ | |
3125 notproduct(intx, ScavengeALotInterval, 1, \ | |
3126 "Interval between which scavenge will occur with +ScavengeALot") \ | |
3127 \ | |
3128 notproduct(intx, FullGCALotInterval, 1, \ | |
3129 "Interval between which full gc will occur with +FullGCALot") \ | |
3130 \ | |
3131 notproduct(intx, FullGCALotStart, 0, \ | |
3132 "For which invocation to start FullGCAlot") \ | |
3133 \ | |
3134 notproduct(intx, FullGCALotDummies, 32*K, \ | |
3135 "Dummy object allocated with +FullGCALot, forcing all objects " \ | |
3136 "to move") \ | |
3137 \ | |
3138 develop(intx, DontYieldALotInterval, 10, \ | |
3139 "Interval between which yields will be dropped (milliseconds)") \ | |
3140 \ | |
3141 develop(intx, MinSleepInterval, 1, \ | |
3142 "Minimum sleep() interval (milliseconds) when " \ | |
3143 "ConvertSleepToYield is off (used for SOLARIS)") \ | |
3144 \ | |
3145 product(intx, EventLogLength, 2000, \ | |
3146 "maximum nof events in event log") \ | |
3147 \ | |
3148 develop(intx, ProfilerPCTickThreshold, 15, \ | |
3149 "Number of ticks in a PC buckets to be a hotspot") \ | |
3150 \ | |
3151 notproduct(intx, DeoptimizeALotInterval, 5, \ | |
3152 "Number of exits until DeoptimizeALot kicks in") \ | |
3153 \ | |
3154 notproduct(intx, ZombieALotInterval, 5, \ | |
3155 "Number of exits until ZombieALot kicks in") \ | |
3156 \ | |
3157 develop(bool, StressNonEntrant, false, \ | |
3158 "Mark nmethods non-entrant at registration") \ | |
3159 \ | |
3160 diagnostic(intx, MallocVerifyInterval, 0, \ | |
3161 "if non-zero, verify C heap after every N calls to " \ | |
3162 "malloc/realloc/free") \ | |
3163 \ | |
3164 diagnostic(intx, MallocVerifyStart, 0, \ | |
3165 "if non-zero, start verifying C heap after Nth call to " \ | |
3166 "malloc/realloc/free") \ | |
3167 \ | |
4464
f304ba0d4e24
inlining seems stable but deoptimizes too frequently
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4140
diff
changeset
|
3168 product_pd(intx, TypeProfileWidth, \ |
0 | 3169 "number of receiver types to record in call/cast profile") \ |
3170 \ | |
3171 develop(intx, BciProfileWidth, 2, \ | |
3172 "number of return bci's to record in ret profile") \ | |
3173 \ | |
3174 product(intx, PerMethodRecompilationCutoff, 400, \ | |
3175 "After recompiling N times, stay in the interpreter (-1=>'Inf')") \ | |
3176 \ | |
1206
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1202
diff
changeset
|
3177 product(intx, PerBytecodeRecompilationCutoff, 200, \ |
0 | 3178 "Per-BCI limit on repeated recompilation (-1=>'Inf')") \ |
3179 \ | |
3180 product(intx, PerMethodTrapLimit, 100, \ | |
3181 "Limit on traps (of one kind) in a method (includes inlines)") \ | |
3182 \ | |
3183 product(intx, PerBytecodeTrapLimit, 4, \ | |
3184 "Limit on traps (of one kind) at a particular BCI") \ | |
3185 \ | |
3186 develop(intx, FreqCountInvocations, 1, \ | |
3187 "Scaling factor for branch frequencies (deprecated)") \ | |
3188 \ | |
3189 develop(intx, InlineFrequencyRatio, 20, \ | |
3190 "Ratio of call site execution to caller method invocation") \ | |
3191 \ | |
3192 develop_pd(intx, InlineFrequencyCount, \ | |
3193 "Count of call site execution necessary to trigger frequent " \ | |
3194 "inlining") \ | |
3195 \ | |
3196 develop(intx, InlineThrowCount, 50, \ | |
3197 "Force inlining of interpreted methods that throw this often") \ | |
3198 \ | |
3199 develop(intx, InlineThrowMaxSize, 200, \ | |
3200 "Force inlining of throwing methods smaller than this") \ | |
3201 \ | |
3202 product(intx, AliasLevel, 3, \ | |
3203 "0 for no aliasing, 1 for oop/field/static/array split, " \ | |
3204 "2 for class split, 3 for unique instances") \ | |
3205 \ | |
3206 develop(bool, VerifyAliases, false, \ | |
3207 "perform extra checks on the results of alias analysis") \ | |
3208 \ | |
3209 develop(intx, ProfilerNodeSize, 1024, \ | |
3210 "Size in K to allocate for the Profile Nodes of each thread") \ | |
3211 \ | |
3212 develop(intx, V8AtomicOperationUnderLockSpinCount, 50, \ | |
3213 "Number of times to spin wait on a v8 atomic operation lock") \ | |
3214 \ | |
3215 product(intx, ReadSpinIterations, 100, \ | |
3216 "Number of read attempts before a yield (spin inner loop)") \ | |
3217 \ | |
3218 product_pd(intx, PreInflateSpin, \ | |
3219 "Number of times to spin wait before inflation") \ | |
3220 \ | |
3221 product(intx, PreBlockSpin, 10, \ | |
3222 "Number of times to spin in an inflated lock before going to " \ | |
3223 "an OS lock") \ | |
3224 \ | |
3225 /* gc parameters */ \ | |
1064 | 3226 product(uintx, InitialHeapSize, 0, \ |
3227 "Initial heap size (in bytes); zero means OldSize + NewSize") \ | |
3228 \ | |
3229 product(uintx, MaxHeapSize, ScaleForWordSize(96*M), \ | |
3230 "Maximum heap size (in bytes)") \ | |
3231 \ | |
3232 product(uintx, OldSize, ScaleForWordSize(4*M), \ | |
3233 "Initial tenured generation size (in bytes)") \ | |
3234 \ | |
1287
8911d8c0596f
6923123: Hotspot refuses to start when -Xmx4m or -Xms4m is specified
phh
parents:
1211
diff
changeset
|
3235 product(uintx, NewSize, ScaleForWordSize(1*M), \ |
1064 | 3236 "Initial new generation size (in bytes)") \ |
0 | 3237 \ |
3238 product(uintx, MaxNewSize, max_uintx, \ | |
1064 | 3239 "Maximum new generation size (in bytes), max_uintx means set " \ |
3240 "ergonomically") \ | |
0 | 3241 \ |
3242 product(uintx, PretenureSizeThreshold, 0, \ | |
1064 | 3243 "Maximum size in bytes of objects allocated in DefNew " \ |
3244 "generation; zero means no maximum") \ | |
3245 \ | |
3246 product(uintx, TLABSize, 0, \ | |
3247 "Starting TLAB size (in bytes); zero means set ergonomically") \ | |
0 | 3248 \ |
3249 product(uintx, MinTLABSize, 2*K, \ | |
3250 "Minimum allowed TLAB size (in bytes)") \ | |
3251 \ | |
3252 product(uintx, TLABAllocationWeight, 35, \ | |
3253 "Allocation averaging weight") \ | |
3254 \ | |
3255 product(uintx, TLABWasteTargetPercent, 1, \ | |
3256 "Percentage of Eden that can be wasted") \ | |
3257 \ | |
3258 product(uintx, TLABRefillWasteFraction, 64, \ | |
3259 "Max TLAB waste at a refill (internal fragmentation)") \ | |
3260 \ | |
3261 product(uintx, TLABWasteIncrement, 4, \ | |
3262 "Increment allowed waste at slow allocation") \ | |
3263 \ | |
1064 | 3264 product(intx, SurvivorRatio, 8, \ |
0 | 3265 "Ratio of eden/survivor space size") \ |
3266 \ | |
1064 | 3267 product(intx, NewRatio, 2, \ |
0 | 3268 "Ratio of new/old generation sizes") \ |
3269 \ | |
3270 product_pd(uintx, NewSizeThreadIncrease, \ | |
3271 "Additional size added to desired new generation size per " \ | |
3272 "non-daemon thread (in bytes)") \ | |
3273 \ | |
3274 product_pd(uintx, PermSize, \ | |
1064 | 3275 "Initial size of permanent generation (in bytes)") \ |
0 | 3276 \ |
3277 product_pd(uintx, MaxPermSize, \ | |
3278 "Maximum size of permanent generation (in bytes)") \ | |
3279 \ | |
3280 product(uintx, MinHeapFreeRatio, 40, \ | |
3281 "Min percentage of heap free after GC to avoid expansion") \ | |
3282 \ | |
3283 product(uintx, MaxHeapFreeRatio, 70, \ | |
3284 "Max percentage of heap free after GC to avoid shrinking") \ | |
3285 \ | |
3286 product(intx, SoftRefLRUPolicyMSPerMB, 1000, \ | |
3287 "Number of milliseconds per MB of free space in the heap") \ | |
3288 \ | |
3289 product(uintx, MinHeapDeltaBytes, ScaleForWordSize(128*K), \ | |
3290 "Min change in heap space due to GC (in bytes)") \ | |
3291 \ | |
3292 product(uintx, MinPermHeapExpansion, ScaleForWordSize(256*K), \ | |
3293 "Min expansion of permanent heap (in bytes)") \ | |
3294 \ | |
3295 product(uintx, MaxPermHeapExpansion, ScaleForWordSize(4*M), \ | |
3296 "Max expansion of permanent heap without full GC (in bytes)") \ | |
3297 \ | |
3298 product(intx, QueuedAllocationWarningCount, 0, \ | |
3299 "Number of times an allocation that queues behind a GC " \ | |
3300 "will retry before printing a warning") \ | |
3301 \ | |
3302 diagnostic(uintx, VerifyGCStartAt, 0, \ | |
3303 "GC invoke count where +VerifyBefore/AfterGC kicks in") \ | |
3304 \ | |
3305 diagnostic(intx, VerifyGCLevel, 0, \ | |
3306 "Generation level at which to start +VerifyBefore/AfterGC") \ | |
3307 \ | |
3308 product(intx, MaxTenuringThreshold, 15, \ | |
3309 "Maximum value for tenuring threshold") \ | |
3310 \ | |
3311 product(intx, InitialTenuringThreshold, 7, \ | |
3312 "Initial value for tenuring threshold") \ | |
3313 \ | |
3314 product(intx, TargetSurvivorRatio, 50, \ | |
3315 "Desired percentage of survivor space used after scavenge") \ | |
3316 \ | |
438 | 3317 product(uintx, MarkSweepDeadRatio, 5, \ |
0 | 3318 "Percentage (0-100) of the old gen allowed as dead wood." \ |
3319 "Serial mark sweep treats this as both the min and max value." \ | |
3320 "CMS uses this value only if it falls back to mark sweep." \ | |
3321 "Par compact uses a variable scale based on the density of the" \ | |
3322 "generation and treats this as the max value when the heap is" \ | |
3323 "either completely full or completely empty. Par compact also" \ | |
3324 "has a smaller default value; see arguments.cpp.") \ | |
3325 \ | |
438 | 3326 product(uintx, PermMarkSweepDeadRatio, 20, \ |
0 | 3327 "Percentage (0-100) of the perm gen allowed as dead wood." \ |
3328 "See MarkSweepDeadRatio for collector-specific comments.") \ | |
3329 \ | |
3330 product(intx, MarkSweepAlwaysCompactCount, 4, \ | |
3331 "How often should we fully compact the heap (ignoring the dead " \ | |
3332 "space parameters)") \ | |
3333 \ | |
3334 product(intx, PrintCMSStatistics, 0, \ | |
3335 "Statistics for CMS") \ | |
3336 \ | |
3337 product(bool, PrintCMSInitiationStatistics, false, \ | |
3338 "Statistics for initiating a CMS collection") \ | |
3339 \ | |
3340 product(intx, PrintFLSStatistics, 0, \ | |
3341 "Statistics for CMS' FreeListSpace") \ | |
3342 \ | |
3343 product(intx, PrintFLSCensus, 0, \ | |
3344 "Census for CMS' FreeListSpace") \ | |
3345 \ | |
3346 develop(uintx, GCExpandToAllocateDelayMillis, 0, \ | |
3347 "Delay in ms between expansion and allocation") \ | |
3348 \ | |
3349 product(intx, DeferThrSuspendLoopCount, 4000, \ | |
3350 "(Unstable) Number of times to iterate in safepoint loop " \ | |
3351 " before blocking VM threads ") \ | |
3352 \ | |
3353 product(intx, DeferPollingPageLoopCount, -1, \ | |
3354 "(Unsafe,Unstable) Number of iterations in safepoint loop " \ | |
3355 "before changing safepoint polling page to RO ") \ | |
3356 \ | |
3357 product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \ | |
3358 \ | |
3359 product(bool, PSChunkLargeArrays, true, \ | |
3360 "true: process large arrays in chunks") \ | |
3361 \ | |
3362 product(uintx, GCDrainStackTargetSize, 64, \ | |
3363 "how many entries we'll try to leave on the stack during " \ | |
3364 "parallel GC") \ | |
3365 \ | |
3366 /* stack parameters */ \ | |
3367 product_pd(intx, StackYellowPages, \ | |
3368 "Number of yellow zone (recoverable overflows) pages") \ | |
3369 \ | |
3370 product_pd(intx, StackRedPages, \ | |
3371 "Number of red zone (unrecoverable overflows) pages") \ | |
3372 \ | |
3373 product_pd(intx, StackShadowPages, \ | |
3374 "Number of shadow zone (for overflow checking) pages" \ | |
3375 " this should exceed the depth of the VM and native call stack") \ | |
3376 \ | |
3377 product_pd(intx, ThreadStackSize, \ | |
3378 "Thread Stack Size (in Kbytes)") \ | |
3379 \ | |
3380 product_pd(intx, VMThreadStackSize, \ | |
3381 "Non-Java Thread Stack Size (in Kbytes)") \ | |
3382 \ | |
3383 product_pd(intx, CompilerThreadStackSize, \ | |
3384 "Compiler Thread Stack Size (in Kbytes)") \ | |
3385 \ | |
3386 develop_pd(uintx, JVMInvokeMethodSlack, \ | |
3387 "Stack space (bytes) required for JVM_InvokeMethod to complete") \ | |
3388 \ | |
3389 product(uintx, ThreadSafetyMargin, 50*M, \ | |
3390 "Thread safety margin is used on fixed-stack LinuxThreads (on " \ | |
3391 "Linux/x86 only) to prevent heap-stack collision. Set to 0 to " \ | |
3392 "disable this feature") \ | |
3393 \ | |
3394 /* code cache parameters */ \ | |
3395 develop(uintx, CodeCacheSegmentSize, 64, \ | |
3396 "Code cache segment size (in bytes) - smallest unit of " \ | |
3397 "allocation") \ | |
3398 \ | |
3399 develop_pd(intx, CodeEntryAlignment, \ | |
3400 "Code entry alignment for generated code (in bytes)") \ | |
3401 \ | |
1365 | 3402 product_pd(intx, OptoLoopAlignment, \ |
3403 "Align inner loops to zero relative to this modulus") \ | |
3404 \ | |
0 | 3405 product_pd(uintx, InitialCodeCacheSize, \ |
3406 "Initial code cache size (in bytes)") \ | |
3407 \ | |
3408 product_pd(uintx, ReservedCodeCacheSize, \ | |
3409 "Reserved code cache size (in bytes) - maximum code cache size") \ | |
3410 \ | |
3411 product(uintx, CodeCacheMinimumFreeSpace, 500*K, \ | |
3412 "When less than X space left, we stop compiling.") \ | |
3413 \ | |
3414 product_pd(uintx, CodeCacheExpansionSize, \ | |
3415 "Code cache expansion size (in bytes)") \ | |
3416 \ | |
3417 develop_pd(uintx, CodeCacheMinBlockLength, \ | |
3418 "Minimum number of segments in a code cache block.") \ | |
3419 \ | |
3420 notproduct(bool, ExitOnFullCodeCache, false, \ | |
3421 "Exit the VM if we fill the code cache.") \ | |
3422 \ | |
4039 | 3423 product(bool, UseCodeCacheFlushing, true, \ |
1202 | 3424 "Attempt to clean the code cache before shutting off compiler") \ |
3425 \ | |
3426 product(intx, MinCodeCacheFlushingInterval, 30, \ | |
3427 "Min number of seconds between code cache cleaning sessions") \ | |
3428 \ | |
3429 product(uintx, CodeCacheFlushingMinimumFreeSpace, 1500*K, \ | |
3430 "When less than X space left, start code cache cleaning") \ | |
3431 \ | |
0 | 3432 /* interpreter debugging */ \ |
3433 develop(intx, BinarySwitchThreshold, 5, \ | |
3434 "Minimal number of lookupswitch entries for rewriting to binary " \ | |
3435 "switch") \ | |
3436 \ | |
3437 develop(intx, StopInterpreterAt, 0, \ | |
3438 "Stops interpreter execution at specified bytecode number") \ | |
3439 \ | |
3440 develop(intx, TraceBytecodesAt, 0, \ | |
3441 "Traces bytecodes starting with specified bytecode number") \ | |
3442 \ | |
3443 /* compiler interface */ \ | |
3444 develop(intx, CIStart, 0, \ | |
3445 "the id of the first compilation to permit") \ | |
3446 \ | |
3447 develop(intx, CIStop, -1, \ | |
3448 "the id of the last compilation to permit") \ | |
3449 \ | |
3450 develop(intx, CIStartOSR, 0, \ | |
3451 "the id of the first osr compilation to permit " \ | |
3452 "(CICountOSR must be on)") \ | |
3453 \ | |
3454 develop(intx, CIStopOSR, -1, \ | |
3455 "the id of the last osr compilation to permit " \ | |
3456 "(CICountOSR must be on)") \ | |
3457 \ | |
3458 develop(intx, CIBreakAtOSR, -1, \ | |
3459 "id of osr compilation to break at") \ | |
3460 \ | |
3461 develop(intx, CIBreakAt, -1, \ | |
3462 "id of compilation to break at") \ | |
3463 \ | |
3464 product(ccstrlist, CompileOnly, "", \ | |
3465 "List of methods (pkg/class.name) to restrict compilation to") \ | |
3466 \ | |
3467 product(ccstr, CompileCommandFile, NULL, \ | |
3468 "Read compiler commands from this file [.hotspot_compiler]") \ | |
3469 \ | |
3470 product(ccstrlist, CompileCommand, "", \ | |
3471 "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \ | |
3472 \ | |
3473 product(bool, CICompilerCountPerCPU, false, \ | |
3474 "1 compiler thread for log(N CPUs)") \ | |
3475 \ | |
3476 develop(intx, CIFireOOMAt, -1, \ | |
3477 "Fire OutOfMemoryErrors throughout CI for testing the compiler " \ | |
3478 "(non-negative value throws OOM after this many CI accesses " \ | |
3479 "in each compile)") \ | |
3480 \ | |
3481 develop(intx, CIFireOOMAtDelay, -1, \ | |
3482 "Wait for this many CI accesses to occur in all compiles before " \ | |
3483 "beginning to throw OutOfMemoryErrors in each compile") \ | |
3484 \ | |
909
b32a809aab08
6866585: debug code in ciObjectFactory too slow for large objects
jcoomes
parents:
905
diff
changeset
|
3485 notproduct(bool, CIObjectFactoryVerify, false, \ |
b32a809aab08
6866585: debug code in ciObjectFactory too slow for large objects
jcoomes
parents:
905
diff
changeset
|
3486 "enable potentially expensive verification in ciObjectFactory") \ |
b32a809aab08
6866585: debug code in ciObjectFactory too slow for large objects
jcoomes
parents:
905
diff
changeset
|
3487 \ |
0 | 3488 /* Priorities */ \ |
3489 product_pd(bool, UseThreadPriorities, "Use native thread priorities") \ | |
3490 \ | |
3491 product(intx, ThreadPriorityPolicy, 0, \ | |
3492 "0 : Normal. "\ | |
3493 " VM chooses priorities that are appropriate for normal "\ | |
3494 " applications. On Solaris NORM_PRIORITY and above are mapped "\ | |
3495 " to normal native priority. Java priorities below NORM_PRIORITY"\ | |
3496 " map to lower native priority values. On Windows applications"\ | |
3497 " are allowed to use higher native priorities. However, with "\ | |
3498 " ThreadPriorityPolicy=0, VM will not use the highest possible"\ | |
3499 " native priority, THREAD_PRIORITY_TIME_CRITICAL, as it may "\ | |
3500 " interfere with system threads. On Linux thread priorities "\ | |
3501 " are ignored because the OS does not support static priority "\ | |
3502 " in SCHED_OTHER scheduling class which is the only choice for"\ | |
3503 " non-root, non-realtime applications. "\ | |
3504 "1 : Aggressive. "\ | |
3505 " Java thread priorities map over to the entire range of "\ | |
3506 " native thread priorities. Higher Java thread priorities map "\ | |
3507 " to higher native thread priorities. This policy should be "\ | |
3508 " used with care, as sometimes it can cause performance "\ | |
3509 " degradation in the application and/or the entire system. On "\ | |
3510 " Linux this policy requires root privilege.") \ | |
3511 \ | |
3512 product(bool, ThreadPriorityVerbose, false, \ | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3513 "Print priority changes") \ |
0 | 3514 \ |
3515 product(intx, DefaultThreadPriority, -1, \ | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3516 "The native priority at which threads run if not elsewhere " \ |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3517 "specified (-1 means no change)") \ |
0 | 3518 \ |
3519 product(intx, CompilerThreadPriority, -1, \ | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3520 "The native priority at which compiler threads should run " \ |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3521 "(-1 means no change)") \ |
0 | 3522 \ |
3523 product(intx, VMThreadPriority, -1, \ | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3524 "The native priority at which the VM thread should run " \ |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3525 "(-1 means no change)") \ |
0 | 3526 \ |
3527 product(bool, CompilerThreadHintNoPreempt, true, \ | |
3528 "(Solaris only) Give compiler threads an extra quanta") \ | |
3529 \ | |
3530 product(bool, VMThreadHintNoPreempt, false, \ | |
3531 "(Solaris only) Give VM thread an extra quanta") \ | |
3532 \ | |
3533 product(intx, JavaPriority1_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3534 product(intx, JavaPriority2_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3535 product(intx, JavaPriority3_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3536 product(intx, JavaPriority4_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3537 product(intx, JavaPriority5_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3538 product(intx, JavaPriority6_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3539 product(intx, JavaPriority7_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3540 product(intx, JavaPriority8_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3541 product(intx, JavaPriority9_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3542 product(intx, JavaPriority10_To_OSPriority,-1, "Map Java priorities to OS priorities") \ | |
3543 \ | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3544 experimental(bool, UseCriticalJavaThreadPriority, false, \ |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3545 "Java thread priority 10 maps to critical scheduling priority") \ |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3546 \ |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3547 experimental(bool, UseCriticalCompilerThreadPriority, false, \ |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3548 "Compiler thread(s) run at critical scheduling priority") \ |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3549 \ |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3550 experimental(bool, UseCriticalCMSThreadPriority, false, \ |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3551 "ConcurrentMarkSweep thread runs at critical scheduling priority")\ |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4807
diff
changeset
|
3552 \ |
0 | 3553 /* compiler debugging */ \ |
3554 notproduct(intx, CompileTheWorldStartAt, 1, \ | |
3555 "First class to consider when using +CompileTheWorld") \ | |
3556 \ | |
3557 notproduct(intx, CompileTheWorldStopAt, max_jint, \ | |
3558 "Last class to consider when using +CompileTheWorld") \ | |
3559 \ | |
3560 develop(intx, NewCodeParameter, 0, \ | |
3561 "Testing Only: Create a dedicated integer parameter before " \ | |
3562 "putback") \ | |
3563 \ | |
3564 /* new oopmap storage allocation */ \ | |
3565 develop(intx, MinOopMapAllocation, 8, \ | |
3566 "Minimum number of OopMap entries in an OopMapSet") \ | |
3567 \ | |
3568 /* Background Compilation */ \ | |
3569 develop(intx, LongCompileThreshold, 50, \ | |
3570 "Used with +TraceLongCompiles") \ | |
3571 \ | |
3572 product(intx, StarvationMonitorInterval, 200, \ | |
3573 "Pause between each check in ms") \ | |
3574 \ | |
3575 /* recompilation */ \ | |
3576 product_pd(intx, CompileThreshold, \ | |
3577 "number of interpreted method invocations before (re-)compiling") \ | |
3578 \ | |
3579 product_pd(intx, BackEdgeThreshold, \ | |
3580 "Interpreter Back edge threshold at which an OSR compilation is invoked")\ | |
3581 \ | |
1783 | 3582 product(intx, Tier0InvokeNotifyFreqLog, 7, \ |
3583 "Interpreter (tier 0) invocation notification frequency.") \ | |
3584 \ | |
3585 product(intx, Tier2InvokeNotifyFreqLog, 11, \ | |
3586 "C1 without MDO (tier 2) invocation notification frequency.") \ | |
3587 \ | |
3588 product(intx, Tier3InvokeNotifyFreqLog, 10, \ | |
3589 "C1 with MDO profiling (tier 3) invocation notification " \ | |
3590 "frequency.") \ | |
3591 \ | |
3964
dc45ae774613
7096639: Tiered: Incorrect counter overflow handling for inlined methods
iveresov
parents:
3960
diff
changeset
|
3592 product(intx, Tier23InlineeNotifyFreqLog, 20, \ |
dc45ae774613
7096639: Tiered: Incorrect counter overflow handling for inlined methods
iveresov
parents:
3960
diff
changeset
|
3593 "Inlinee invocation (tiers 2 and 3) notification frequency") \ |
dc45ae774613
7096639: Tiered: Incorrect counter overflow handling for inlined methods
iveresov
parents:
3960
diff
changeset
|
3594 \ |
1783 | 3595 product(intx, Tier0BackedgeNotifyFreqLog, 10, \ |
3596 "Interpreter (tier 0) invocation notification frequency.") \ | |
3597 \ | |
3598 product(intx, Tier2BackedgeNotifyFreqLog, 14, \ | |
3599 "C1 without MDO (tier 2) invocation notification frequency.") \ | |
3600 \ | |
3601 product(intx, Tier3BackedgeNotifyFreqLog, 13, \ | |
3602 "C1 with MDO profiling (tier 3) invocation notification " \ | |
3603 "frequency.") \ | |
3604 \ | |
3605 product(intx, Tier2CompileThreshold, 0, \ | |
3606 "threshold at which tier 2 compilation is invoked") \ | |
3607 \ | |
3608 product(intx, Tier2BackEdgeThreshold, 0, \ | |
3609 "Back edge threshold at which tier 2 compilation is invoked") \ | |
3610 \ | |
3611 product(intx, Tier3InvocationThreshold, 200, \ | |
3612 "Compile if number of method invocations crosses this " \ | |
3613 "threshold") \ | |
3614 \ | |
3615 product(intx, Tier3MinInvocationThreshold, 100, \ | |
3616 "Minimum invocation to compile at tier 3") \ | |
3617 \ | |
3618 product(intx, Tier3CompileThreshold, 2000, \ | |
3619 "Threshold at which tier 3 compilation is invoked (invocation " \ | |
3620 "minimum must be satisfied.") \ | |
3621 \ | |
4819 | 3622 product(intx, Tier3BackEdgeThreshold, 60000, \ |
1783 | 3623 "Back edge threshold at which tier 3 OSR compilation is invoked") \ |
3624 \ | |
3625 product(intx, Tier4InvocationThreshold, 5000, \ | |
3626 "Compile if number of method invocations crosses this " \ | |
3627 "threshold") \ | |
3628 \ | |
3629 product(intx, Tier4MinInvocationThreshold, 600, \ | |
3630 "Minimum invocation to compile at tier 4") \ | |
3631 \ | |
3632 product(intx, Tier4CompileThreshold, 15000, \ | |
3633 "Threshold at which tier 4 compilation is invoked (invocation " \ | |
3634 "minimum must be satisfied.") \ | |
3635 \ | |
3636 product(intx, Tier4BackEdgeThreshold, 40000, \ | |
3637 "Back edge threshold at which tier 4 OSR compilation is invoked") \ | |
3638 \ | |
3639 product(intx, Tier3DelayOn, 5, \ | |
3640 "If C2 queue size grows over this amount per compiler thread " \ | |
3641 "stop compiling at tier 3 and start compiling at tier 2") \ | |
3642 \ | |
3643 product(intx, Tier3DelayOff, 2, \ | |
3644 "If C2 queue size is less than this amount per compiler thread " \ | |
3645 "allow methods compiled at tier 2 transition to tier 3") \ | |
3646 \ | |
3647 product(intx, Tier3LoadFeedback, 5, \ | |
3648 "Tier 3 thresholds will increase twofold when C1 queue size " \ | |
3649 "reaches this amount per compiler thread") \ | |
3650 \ | |
3651 product(intx, Tier4LoadFeedback, 3, \ | |
3652 "Tier 4 thresholds will increase twofold when C2 queue size " \ | |
3653 "reaches this amount per compiler thread") \ | |
3654 \ | |
3655 product(intx, TieredCompileTaskTimeout, 50, \ | |
3656 "Kill compile task if method was not used within " \ | |
3657 "given timeout in milliseconds") \ | |
3658 \ | |
3659 product(intx, TieredStopAtLevel, 4, \ | |
3660 "Stop at given compilation level") \ | |
3661 \ | |
3662 product(intx, Tier0ProfilingStartPercentage, 200, \ | |
3663 "Start profiling in interpreter if the counters exceed tier 3" \ | |
3664 "thresholds by the specified percentage") \ | |
3665 \ | |
3666 product(intx, TieredRateUpdateMinTime, 1, \ | |
3667 "Minimum rate sampling interval (in milliseconds)") \ | |
3668 \ | |
3669 product(intx, TieredRateUpdateMaxTime, 25, \ | |
3670 "Maximum rate sampling interval (in milliseconds)") \ | |
0 | 3671 \ |
3672 product_pd(bool, TieredCompilation, \ | |
1783 | 3673 "Enable tiered compilation") \ |
3674 \ | |
3675 product(bool, PrintTieredEvents, false, \ | |
3676 "Print tiered events notifications") \ | |
0 | 3677 \ |
3678 product(bool, StressTieredRuntime, false, \ | |
3679 "Alternate client and server compiler on compile requests") \ | |
3680 \ | |
3681 product_pd(intx, OnStackReplacePercentage, \ | |
3682 "NON_TIERED number of method invocations/branches (expressed as %"\ | |
3683 "of CompileThreshold) before (re-)compiling OSR code") \ | |
3684 \ | |
3685 product(intx, InterpreterProfilePercentage, 33, \ | |
3686 "NON_TIERED number of method invocations/branches (expressed as %"\ | |
3687 "of CompileThreshold) before profiling in the interpreter") \ | |
3688 \ | |
3689 develop(intx, MaxRecompilationSearchLength, 10, \ | |
3690 "max. # frames to inspect searching for recompilee") \ | |
3691 \ | |
3692 develop(intx, MaxInterpretedSearchLength, 3, \ | |
3693 "max. # interp. frames to skip when searching for recompilee") \ | |
3694 \ | |
3695 develop(intx, DesiredMethodLimit, 8000, \ | |
3696 "desired max. method size (in bytecodes) after inlining") \ | |
3697 \ | |
3698 develop(intx, HugeMethodLimit, 8000, \ | |
3699 "don't compile methods larger than this if " \ | |
3700 "+DontCompileHugeMethods") \ | |
3701 \ | |
3702 /* New JDK 1.4 reflection implementation */ \ | |
3703 \ | |
3704 develop(bool, UseNewReflection, true, \ | |
3705 "Temporary flag for transition to reflection based on dynamic " \ | |
3706 "bytecode generation in 1.4; can no longer be turned off in 1.4 " \ | |
3707 "JDK, and is unneeded in 1.3 JDK, but marks most places VM " \ | |
3708 "changes were needed") \ | |
3709 \ | |
3710 develop(bool, VerifyReflectionBytecodes, false, \ | |
3711 "Force verification of 1.4 reflection bytecodes. Does not work " \ | |
3712 "in situations like that described in 4486457 or for " \ | |
3713 "constructors generated for serialization, so can not be enabled "\ | |
3714 "in product.") \ | |
3715 \ | |
3716 product(bool, ReflectionWrapResolutionErrors, true, \ | |
3717 "Temporary flag for transition to AbstractMethodError wrapped " \ | |
3718 "in InvocationTargetException. See 6531596") \ | |
3719 \ | |
3720 \ | |
3721 develop(intx, FastSuperclassLimit, 8, \ | |
3722 "Depth of hardwired instanceof accelerator array") \ | |
3723 \ | |
3724 /* Properties for Java libraries */ \ | |
3725 \ | |
6199
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6197
diff
changeset
|
3726 product(uintx, MaxDirectMemorySize, 0, \ |
0 | 3727 "Maximum total size of NIO direct-buffer allocations") \ |
3728 \ | |
3729 /* temporary developer defined flags */ \ | |
3730 \ | |
3731 diagnostic(bool, UseNewCode, false, \ | |
3732 "Testing Only: Use the new version while testing") \ | |
3733 \ | |
3734 diagnostic(bool, UseNewCode2, false, \ | |
3735 "Testing Only: Use the new version while testing") \ | |
3736 \ | |
3737 diagnostic(bool, UseNewCode3, false, \ | |
3738 "Testing Only: Use the new version while testing") \ | |
3739 \ | |
3740 /* flags for performance data collection */ \ | |
3741 \ | |
3797
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3780
diff
changeset
|
3742 product(bool, UsePerfData, falseInEmbedded, \ |
0 | 3743 "Flag to disable jvmstat instrumentation for performance testing" \ |
3797
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3780
diff
changeset
|
3744 "and problem isolation purposes.") \ |
0 | 3745 \ |
3746 product(bool, PerfDataSaveToFile, false, \ | |
3747 "Save PerfData memory to hsperfdata_<pid> file on exit") \ | |
3748 \ | |
3749 product(ccstr, PerfDataSaveFile, NULL, \ | |
3750 "Save PerfData memory to the specified absolute pathname," \ | |
3751 "%p in the file name if present will be replaced by pid") \ | |
3752 \ | |
3753 product(intx, PerfDataSamplingInterval, 50 /*ms*/, \ | |
3754 "Data sampling interval in milliseconds") \ | |
3755 \ | |
3756 develop(bool, PerfTraceDataCreation, false, \ | |
3757 "Trace creation of Performance Data Entries") \ | |
3758 \ | |
3759 develop(bool, PerfTraceMemOps, false, \ | |
3760 "Trace PerfMemory create/attach/detach calls") \ | |
3761 \ | |
3762 product(bool, PerfDisableSharedMem, false, \ | |
3763 "Store performance data in standard memory") \ | |
3764 \ | |
3765 product(intx, PerfDataMemorySize, 32*K, \ | |
3766 "Size of performance data memory region. Will be rounded " \ | |
3767 "up to a multiple of the native os page size.") \ | |
3768 \ | |
3769 product(intx, PerfMaxStringConstLength, 1024, \ | |
3770 "Maximum PerfStringConstant string length before truncation") \ | |
3771 \ | |
3772 product(bool, PerfAllowAtExitRegistration, false, \ | |
3773 "Allow registration of atexit() methods") \ | |
3774 \ | |
3775 product(bool, PerfBypassFileSystemCheck, false, \ | |
3776 "Bypass Win32 file system criteria checks (Windows Only)") \ | |
3777 \ | |
3778 product(intx, UnguardOnExecutionViolation, 0, \ | |
3779 "Unguard page and retry on no-execute fault (Win32 only)" \ | |
3780 "0=off, 1=conservative, 2=aggressive") \ | |
3781 \ | |
3782 /* Serviceability Support */ \ | |
3783 \ | |
3784 product(bool, ManagementServer, false, \ | |
3785 "Create JMX Management Server") \ | |
3786 \ | |
3787 product(bool, DisableAttachMechanism, false, \ | |
3788 "Disable mechanism that allows tools to attach to this VM") \ | |
3789 \ | |
3790 product(bool, StartAttachListener, false, \ | |
3791 "Always start Attach Listener at VM startup") \ | |
3792 \ | |
3793 manageable(bool, PrintConcurrentLocks, false, \ | |
3794 "Print java.util.concurrent locks in thread dump") \ | |
3795 \ | |
2209
e9aa2ca89ad6
7019718: make error reporting flags product instead of diagnostic
kamg
parents:
2204
diff
changeset
|
3796 product(bool, TransmitErrorReport, false, \ |
2199
d8a72fbc4be7
7003401: Implement VM error-reporting functionality on erroneous termination
kamg
parents:
2192
diff
changeset
|
3797 "Enable error report transmission on erroneous termination") \ |
d8a72fbc4be7
7003401: Implement VM error-reporting functionality on erroneous termination
kamg
parents:
2192
diff
changeset
|
3798 \ |
2209
e9aa2ca89ad6
7019718: make error reporting flags product instead of diagnostic
kamg
parents:
2204
diff
changeset
|
3799 product(ccstr, ErrorReportServer, NULL, \ |
2199
d8a72fbc4be7
7003401: Implement VM error-reporting functionality on erroneous termination
kamg
parents:
2192
diff
changeset
|
3800 "Override built-in error report server address") \ |
d8a72fbc4be7
7003401: Implement VM error-reporting functionality on erroneous termination
kamg
parents:
2192
diff
changeset
|
3801 \ |
0 | 3802 /* Shared spaces */ \ |
3803 \ | |
3804 product(bool, UseSharedSpaces, true, \ | |
3805 "Use shared spaces in the permanent generation") \ | |
3806 \ | |
3807 product(bool, RequireSharedSpaces, false, \ | |
3808 "Require shared spaces in the permanent generation") \ | |
3809 \ | |
3810 product(bool, DumpSharedSpaces, false, \ | |
3811 "Special mode: JVM reads a class list, loads classes, builds " \ | |
3812 "shared spaces, and dumps the shared spaces to a file to be " \ | |
3813 "used in future JVM runs.") \ | |
3814 \ | |
3815 product(bool, PrintSharedSpaces, false, \ | |
3816 "Print usage of shared spaces") \ | |
3817 \ | |
3818 product(uintx, SharedDummyBlockSize, 512*M, \ | |
3819 "Size of dummy block used to shift heap addresses (in bytes)") \ | |
3820 \ | |
1875 | 3821 product(uintx, SharedReadWriteSize, NOT_LP64(12*M) LP64_ONLY(13*M), \ |
0 | 3822 "Size of read-write space in permanent generation (in bytes)") \ |
3823 \ | |
910
10d8c0d0d60e
6867645: java -Xshare:dump failed - read only space too small
jcoomes
parents:
909
diff
changeset
|
3824 product(uintx, SharedReadOnlySize, 10*M, \ |
0 | 3825 "Size of read-only space in permanent generation (in bytes)") \ |
3826 \ | |
5979
fc9d8850ab8b
7150058: Allocate symbols from null boot loader to an arena for NMT
coleenp
parents:
5947
diff
changeset
|
3827 product(uintx, SharedMiscDataSize, NOT_LP64(4*M) LP64_ONLY(5*M) NOT_PRODUCT(+1*M), \ |
0 | 3828 "Size of the shared data area adjacent to the heap (in bytes)") \ |
3829 \ | |
3830 product(uintx, SharedMiscCodeSize, 4*M, \ | |
3831 "Size of the shared code area adjacent to the heap (in bytes)") \ | |
3832 \ | |
3833 diagnostic(bool, SharedOptimizeColdStart, true, \ | |
3834 "At dump time, order shared objects to achieve better " \ | |
3835 "cold startup time.") \ | |
3836 \ | |
3837 develop(intx, SharedOptimizeColdStartPolicy, 2, \ | |
3838 "Reordering policy for SharedOptimizeColdStart " \ | |
3839 "0=favor classload-time locality, 1=balanced, " \ | |
3840 "2=favor runtime locality") \ | |
3841 \ | |
3842 diagnostic(bool, SharedSkipVerify, false, \ | |
3843 "Skip assert() and verify() which page-in unwanted shared " \ | |
3844 "objects. ") \ | |
3845 \ | |
2492
4e5515d09314
Fixed merge issues.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
2491
diff
changeset
|
3846 diagnostic(bool, EnableInvokeDynamic, false, \ |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3847 "support JSR 292 (method handles, invokedynamic, " \ |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3848 "anonymous classes") \ |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3849 \ |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
406
diff
changeset
|
3850 product(bool, AnonymousClasses, false, \ |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3851 "support sun.misc.Unsafe.defineAnonymousClass (deprecated)") \ |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
406
diff
changeset
|
3852 \ |
3449
a9b8b43b115f
7052219: JSR 292: Crash in ~BufferBlob::MethodHandles adapters
never
parents:
3418
diff
changeset
|
3853 diagnostic(bool, PrintMethodHandleStubs, false, \ |
a9b8b43b115f
7052219: JSR 292: Crash in ~BufferBlob::MethodHandles adapters
never
parents:
3418
diff
changeset
|
3854 "Print generated stub code for method handles") \ |
a9b8b43b115f
7052219: JSR 292: Crash in ~BufferBlob::MethodHandles adapters
never
parents:
3418
diff
changeset
|
3855 \ |
710 | 3856 develop(bool, TraceMethodHandles, false, \ |
3857 "trace internal method handle operations") \ | |
3858 \ | |
3859 diagnostic(bool, VerifyMethodHandles, trueInDebug, \ | |
3860 "perform extra checks when constructing method handles") \ | |
3861 \ | |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6199
diff
changeset
|
3862 diagnostic(bool, ShowHiddenFrames, false, \ |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6199
diff
changeset
|
3863 "show method handle implementation frames (usually hidden)") \ |
3388
a80577f854f9
7045513: JSR 292 inlining causes crashes in methodHandleWalk.cpp
never
parents:
3384
diff
changeset
|
3864 \ |
1173
73b22f919c34
6912065: final fields in objects need to support inlining optimizations for JSR 292
jrose
parents:
1157
diff
changeset
|
3865 experimental(bool, TrustFinalNonStaticFields, false, \ |
73b22f919c34
6912065: final fields in objects need to support inlining optimizations for JSR 292
jrose
parents:
1157
diff
changeset
|
3866 "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
|
3867 \ |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3868 develop(bool, TraceInvokeDynamic, false, \ |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3869 "trace internal invoke dynamic operations") \ |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3870 \ |
0 | 3871 diagnostic(bool, PauseAtStartup, false, \ |
3872 "Causes the VM to pause at startup time and wait for the pause " \ | |
3873 "file to be removed (default: ./vm.paused.<pid>)") \ | |
3874 \ | |
3875 diagnostic(ccstr, PauseAtStartupFile, NULL, \ | |
3876 "The file to create and for whose removal to await when pausing " \ | |
3877 "at startup. (default: ./vm.paused.<pid>)") \ | |
3878 \ | |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2265
diff
changeset
|
3879 diagnostic(bool, PauseAtExit, false, \ |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2265
diff
changeset
|
3880 "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
|
3881 \ |
0 | 3882 product(bool, ExtendedDTraceProbes, false, \ |
3883 "Enable performance-impacting dtrace probes") \ | |
3884 \ | |
3885 product(bool, DTraceMethodProbes, false, \ | |
3886 "Enable dtrace probes for method-entry and method-exit") \ | |
3887 \ | |
3888 product(bool, DTraceAllocProbes, false, \ | |
3889 "Enable dtrace probes for object allocation") \ | |
3890 \ | |
3891 product(bool, DTraceMonitorProbes, false, \ | |
3892 "Enable dtrace probes for monitor events") \ | |
3893 \ | |
3894 product(bool, RelaxAccessControlCheck, false, \ | |
3895 "Relax the access control checks in the verifier") \ | |
3896 \ | |
116
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
113
diff
changeset
|
3897 diagnostic(bool, PrintDTraceDOF, false, \ |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
113
diff
changeset
|
3898 "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
|
3899 \ |
2378 | 3900 product(uintx, StringTableSize, 1009, \ |
3901 "Number of buckets in the interned String table") \ | |
3902 \ | |
449
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
443
diff
changeset
|
3903 product(bool, UseVMInterruptibleIO, false, \ |
0 | 3904 "(Unstable, Solaris-specific) Thread interrupt before or with " \ |
449
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
443
diff
changeset
|
3905 "EINTR for I/O operations results in OS_INTRPT. The default value"\ |
5915 | 3906 " of this flag is true for JDK 6 and earlier") \ |
3907 \ | |
3908 diagnostic(bool, WhiteBoxAPI, false, \ | |
6064
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
5979
diff
changeset
|
3909 "Enable internal testing APIs") \ |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
5979
diff
changeset
|
3910 \ |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
5979
diff
changeset
|
3911 product(bool, PrintGCCause, true, \ |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
5979
diff
changeset
|
3912 "Include GC cause in GC logging") |
0 | 3913 |
3914 /* | |
3915 * Macros for factoring of globals | |
3916 */ | |
3917 | |
3918 // Interface macros | |
3919 #define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; | |
3920 #define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name; | |
3921 #define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name; | |
350
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
3922 #define DECLARE_EXPERIMENTAL_FLAG(type, name, value, doc) extern "C" type name; |
0 | 3923 #define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name; |
3924 #define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name; | |
3925 #ifdef PRODUCT | |
3926 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) const type name = value; | |
3927 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) const type name = pd_##name; | |
3928 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) | |
3929 #else | |
3930 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name; | |
3931 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name; | |
3932 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name; | |
3933 #endif | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3934 // 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
|
3935 #ifdef _LP64 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3936 #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
|
3937 #else |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3938 #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
parents:
109
diff
changeset
|
3939 #endif // _LP64 |
0 | 3940 |
3941 // Implementation macros | |
3942 #define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value; | |
3943 #define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name; | |
3944 #define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value; | |
350
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
3945 #define MATERIALIZE_EXPERIMENTAL_FLAG(type, name, value, doc) type name = value; |
0 | 3946 #define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value; |
3947 #define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value; | |
3948 #ifdef PRODUCT | |
3949 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) /* flag name is constant */ | |
3950 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) /* flag name is constant */ | |
3951 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) | |
3952 #else | |
3953 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value; | |
3954 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name; | |
3955 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value; | |
3956 #endif | |
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3957 #ifdef _LP64 |
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3958 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) type name = value; |
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3959 #else |
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3960 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) /* flag is constant */ |
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3961 #endif // _LP64 |
0 | 3962 |
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3963 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 | 3964 |
3965 RUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG) | |
1972 | 3966 |
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3967 // Extensions |
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3968 |
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3969 #include "runtime/globals_ext.hpp" |
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3970 |
1972 | 3971 #endif // SHARE_VM_RUNTIME_GLOBALS_HPP |