Mercurial > hg > graal-jvmci-8
annotate src/share/vm/runtime/globals.hpp @ 3935:5257f8e66b40
Merge
author | iveresov |
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date | Fri, 09 Sep 2011 12:44:37 -0700 |
parents | d968f546734e |
children | f08d439fab8c |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_RUNTIME_GLOBALS_HPP |
26 #define SHARE_VM_RUNTIME_GLOBALS_HPP | |
27 | |
28 #include "utilities/debug.hpp" | |
29 #ifdef TARGET_ARCH_x86 | |
30 # include "globals_x86.hpp" | |
31 #endif | |
32 #ifdef TARGET_ARCH_sparc | |
33 # include "globals_sparc.hpp" | |
34 #endif | |
35 #ifdef TARGET_ARCH_zero | |
36 # include "globals_zero.hpp" | |
37 #endif | |
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38 #ifdef TARGET_ARCH_arm |
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39 # include "globals_arm.hpp" |
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40 #endif |
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41 #ifdef TARGET_ARCH_ppc |
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42 # include "globals_ppc.hpp" |
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43 #endif |
1972 | 44 #ifdef TARGET_OS_FAMILY_linux |
45 # include "globals_linux.hpp" | |
46 #endif | |
47 #ifdef TARGET_OS_FAMILY_solaris | |
48 # include "globals_solaris.hpp" | |
49 #endif | |
50 #ifdef TARGET_OS_FAMILY_windows | |
51 # include "globals_windows.hpp" | |
52 #endif | |
53 #ifdef TARGET_OS_ARCH_linux_x86 | |
54 # include "globals_linux_x86.hpp" | |
55 #endif | |
56 #ifdef TARGET_OS_ARCH_linux_sparc | |
57 # include "globals_linux_sparc.hpp" | |
58 #endif | |
59 #ifdef TARGET_OS_ARCH_linux_zero | |
60 # include "globals_linux_zero.hpp" | |
61 #endif | |
62 #ifdef TARGET_OS_ARCH_solaris_x86 | |
63 # include "globals_solaris_x86.hpp" | |
64 #endif | |
65 #ifdef TARGET_OS_ARCH_solaris_sparc | |
66 # include "globals_solaris_sparc.hpp" | |
67 #endif | |
68 #ifdef TARGET_OS_ARCH_windows_x86 | |
69 # include "globals_windows_x86.hpp" | |
70 #endif | |
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71 #ifdef TARGET_OS_ARCH_linux_arm |
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72 # include "globals_linux_arm.hpp" |
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73 #endif |
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74 #ifdef TARGET_OS_ARCH_linux_ppc |
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75 # include "globals_linux_ppc.hpp" |
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76 #endif |
1972 | 77 #ifdef COMPILER1 |
78 #ifdef TARGET_ARCH_x86 | |
79 # include "c1_globals_x86.hpp" | |
80 #endif | |
81 #ifdef TARGET_ARCH_sparc | |
82 # include "c1_globals_sparc.hpp" | |
83 #endif | |
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84 #ifdef TARGET_ARCH_arm |
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85 # include "c1_globals_arm.hpp" |
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86 #endif |
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87 #ifdef TARGET_ARCH_ppc |
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88 # include "c1_globals_ppc.hpp" |
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89 #endif |
1972 | 90 #ifdef TARGET_OS_FAMILY_linux |
91 # include "c1_globals_linux.hpp" | |
92 #endif | |
93 #ifdef TARGET_OS_FAMILY_solaris | |
94 # include "c1_globals_solaris.hpp" | |
95 #endif | |
96 #ifdef TARGET_OS_FAMILY_windows | |
97 # include "c1_globals_windows.hpp" | |
98 #endif | |
99 #endif | |
100 #ifdef COMPILER2 | |
101 #ifdef TARGET_ARCH_x86 | |
102 # include "c2_globals_x86.hpp" | |
103 #endif | |
104 #ifdef TARGET_ARCH_sparc | |
105 # include "c2_globals_sparc.hpp" | |
106 #endif | |
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107 #ifdef TARGET_ARCH_arm |
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108 # include "c2_globals_arm.hpp" |
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109 #endif |
1972 | 110 #ifdef TARGET_OS_FAMILY_linux |
111 # include "c2_globals_linux.hpp" | |
112 #endif | |
113 #ifdef TARGET_OS_FAMILY_solaris | |
114 # include "c2_globals_solaris.hpp" | |
115 #endif | |
116 #ifdef TARGET_OS_FAMILY_windows | |
117 # include "c2_globals_windows.hpp" | |
118 #endif | |
119 #endif | |
120 #ifdef SHARK | |
121 #ifdef TARGET_ARCH_zero | |
122 # include "shark_globals_zero.hpp" | |
123 #endif | |
124 #endif | |
125 | |
1692 | 126 #if !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK) |
0 | 127 define_pd_global(bool, BackgroundCompilation, false); |
128 define_pd_global(bool, UseTLAB, false); | |
129 define_pd_global(bool, CICompileOSR, false); | |
130 define_pd_global(bool, UseTypeProfile, false); | |
131 define_pd_global(bool, UseOnStackReplacement, false); | |
132 define_pd_global(bool, InlineIntrinsics, false); | |
133 define_pd_global(bool, PreferInterpreterNativeStubs, true); | |
134 define_pd_global(bool, ProfileInterpreter, false); | |
135 define_pd_global(bool, ProfileTraps, false); | |
136 define_pd_global(bool, TieredCompilation, false); | |
137 | |
138 define_pd_global(intx, CompileThreshold, 0); | |
139 define_pd_global(intx, BackEdgeThreshold, 0); | |
140 | |
141 define_pd_global(intx, OnStackReplacePercentage, 0); | |
142 define_pd_global(bool, ResizeTLAB, false); | |
143 define_pd_global(intx, FreqInlineSize, 0); | |
1064 | 144 define_pd_global(intx, InlineSmallCode, 0); |
0 | 145 define_pd_global(intx, NewSizeThreadIncrease, 4*K); |
146 define_pd_global(intx, InlineClassNatives, true); | |
147 define_pd_global(intx, InlineUnsafeOps, true); | |
148 define_pd_global(intx, InitialCodeCacheSize, 160*K); | |
149 define_pd_global(intx, ReservedCodeCacheSize, 32*M); | |
150 define_pd_global(intx, CodeCacheExpansionSize, 32*K); | |
151 define_pd_global(intx, CodeCacheMinBlockLength, 1); | |
152 define_pd_global(uintx,PermSize, ScaleForWordSize(4*M)); | |
153 define_pd_global(uintx,MaxPermSize, ScaleForWordSize(64*M)); | |
154 define_pd_global(bool, NeverActAsServerClassMachine, true); | |
1064 | 155 define_pd_global(uint64_t,MaxRAM, 1ULL*G); |
0 | 156 #define CI_COMPILER_COUNT 0 |
157 #else | |
158 | |
159 #ifdef COMPILER2 | |
160 #define CI_COMPILER_COUNT 2 | |
161 #else | |
162 #define CI_COMPILER_COUNT 1 | |
163 #endif // COMPILER2 | |
164 | |
165 #endif // no compilers | |
166 | |
167 | |
168 // string type aliases used only in this file | |
169 typedef const char* ccstr; | |
170 typedef const char* ccstrlist; // represents string arguments which accumulate | |
171 | |
172 enum FlagValueOrigin { | |
173 DEFAULT = 0, | |
174 COMMAND_LINE = 1, | |
175 ENVIRON_VAR = 2, | |
176 CONFIG_FILE = 3, | |
177 MANAGEMENT = 4, | |
178 ERGONOMIC = 5, | |
179 ATTACH_ON_DEMAND = 6, | |
180 INTERNAL = 99 | |
181 }; | |
182 | |
183 struct Flag { | |
184 const char *type; | |
185 const char *name; | |
186 void* addr; | |
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187 |
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188 NOT_PRODUCT(const char *doc;) |
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189 |
0 | 190 const char *kind; |
191 FlagValueOrigin origin; | |
192 | |
193 // points to all Flags static array | |
194 static Flag *flags; | |
195 | |
196 // number of flags | |
197 static size_t numFlags; | |
198 | |
199 static Flag* find_flag(char* name, size_t length); | |
200 | |
201 bool is_bool() const { return strcmp(type, "bool") == 0; } | |
202 bool get_bool() const { return *((bool*) addr); } | |
203 void set_bool(bool value) { *((bool*) addr) = value; } | |
204 | |
205 bool is_intx() const { return strcmp(type, "intx") == 0; } | |
206 intx get_intx() const { return *((intx*) addr); } | |
207 void set_intx(intx value) { *((intx*) addr) = value; } | |
208 | |
209 bool is_uintx() const { return strcmp(type, "uintx") == 0; } | |
210 uintx get_uintx() const { return *((uintx*) addr); } | |
211 void set_uintx(uintx value) { *((uintx*) addr) = value; } | |
212 | |
1064 | 213 bool is_uint64_t() const { return strcmp(type, "uint64_t") == 0; } |
214 uint64_t get_uint64_t() const { return *((uint64_t*) addr); } | |
215 void set_uint64_t(uint64_t value) { *((uint64_t*) addr) = value; } | |
216 | |
0 | 217 bool is_double() const { return strcmp(type, "double") == 0; } |
218 double get_double() const { return *((double*) addr); } | |
219 void set_double(double value) { *((double*) addr) = value; } | |
220 | |
221 bool is_ccstr() const { return strcmp(type, "ccstr") == 0 || strcmp(type, "ccstrlist") == 0; } | |
222 bool ccstr_accumulates() const { return strcmp(type, "ccstrlist") == 0; } | |
223 ccstr get_ccstr() const { return *((ccstr*) addr); } | |
224 void set_ccstr(ccstr value) { *((ccstr*) addr) = value; } | |
225 | |
226 bool is_unlocker() const; | |
227 bool is_unlocked() const; | |
228 bool is_writeable() const; | |
229 bool is_external() const; | |
230 | |
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231 void print_on(outputStream* st, bool withComments = false ); |
0 | 232 void print_as_flag(outputStream* st); |
233 }; | |
234 | |
235 // debug flags control various aspects of the VM and are global accessible | |
236 | |
237 // use FlagSetting to temporarily change some debug flag | |
238 // e.g. FlagSetting fs(DebugThisAndThat, true); | |
239 // restored to previous value upon leaving scope | |
240 class FlagSetting { | |
241 bool val; | |
242 bool* flag; | |
243 public: | |
244 FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; } | |
245 ~FlagSetting() { *flag = val; } | |
246 }; | |
247 | |
248 | |
249 class CounterSetting { | |
250 intx* counter; | |
251 public: | |
252 CounterSetting(intx* cnt) { counter = cnt; (*counter)++; } | |
253 ~CounterSetting() { (*counter)--; } | |
254 }; | |
255 | |
256 | |
257 class IntFlagSetting { | |
258 intx val; | |
259 intx* flag; | |
260 public: | |
261 IntFlagSetting(intx& fl, intx newValue) { flag = &fl; val = fl; fl = newValue; } | |
262 ~IntFlagSetting() { *flag = val; } | |
263 }; | |
264 | |
265 | |
266 class DoubleFlagSetting { | |
267 double val; | |
268 double* flag; | |
269 public: | |
270 DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; } | |
271 ~DoubleFlagSetting() { *flag = val; } | |
272 }; | |
273 | |
274 | |
275 class CommandLineFlags { | |
276 public: | |
277 static bool boolAt(char* name, size_t len, bool* value); | |
278 static bool boolAt(char* name, bool* value) { return boolAt(name, strlen(name), value); } | |
279 static bool boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin); | |
280 static bool boolAtPut(char* name, bool* value, FlagValueOrigin origin) { return boolAtPut(name, strlen(name), value, origin); } | |
281 | |
282 static bool intxAt(char* name, size_t len, intx* value); | |
283 static bool intxAt(char* name, intx* value) { return intxAt(name, strlen(name), value); } | |
284 static bool intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin); | |
285 static bool intxAtPut(char* name, intx* value, FlagValueOrigin origin) { return intxAtPut(name, strlen(name), value, origin); } | |
286 | |
287 static bool uintxAt(char* name, size_t len, uintx* value); | |
288 static bool uintxAt(char* name, uintx* value) { return uintxAt(name, strlen(name), value); } | |
289 static bool uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin); | |
290 static bool uintxAtPut(char* name, uintx* value, FlagValueOrigin origin) { return uintxAtPut(name, strlen(name), value, origin); } | |
291 | |
1064 | 292 static bool uint64_tAt(char* name, size_t len, uint64_t* value); |
293 static bool uint64_tAt(char* name, uint64_t* value) { return uint64_tAt(name, strlen(name), value); } | |
294 static bool uint64_tAtPut(char* name, size_t len, uint64_t* value, FlagValueOrigin origin); | |
295 static bool uint64_tAtPut(char* name, uint64_t* value, FlagValueOrigin origin) { return uint64_tAtPut(name, strlen(name), value, origin); } | |
296 | |
0 | 297 static bool doubleAt(char* name, size_t len, double* value); |
298 static bool doubleAt(char* name, double* value) { return doubleAt(name, strlen(name), value); } | |
299 static bool doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin); | |
300 static bool doubleAtPut(char* name, double* value, FlagValueOrigin origin) { return doubleAtPut(name, strlen(name), value, origin); } | |
301 | |
302 static bool ccstrAt(char* name, size_t len, ccstr* value); | |
303 static bool ccstrAt(char* name, ccstr* value) { return ccstrAt(name, strlen(name), value); } | |
304 static bool ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin); | |
305 static bool ccstrAtPut(char* name, ccstr* value, FlagValueOrigin origin) { return ccstrAtPut(name, strlen(name), value, origin); } | |
306 | |
307 // Returns false if name is not a command line flag. | |
308 static bool wasSetOnCmdline(const char* name, bool* value); | |
309 static void printSetFlags(); | |
310 | |
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311 static void printFlags(bool withComments = false ); |
0 | 312 |
313 static void verify() PRODUCT_RETURN; | |
314 }; | |
315 | |
316 // use this for flags that are true by default in the debug version but | |
317 // false in the optimized version, and vice versa | |
318 #ifdef ASSERT | |
319 #define trueInDebug true | |
320 #define falseInDebug false | |
321 #else | |
322 #define trueInDebug false | |
323 #define falseInDebug true | |
324 #endif | |
325 | |
326 // use this for flags that are true per default in the product build | |
327 // but false in development builds, and vice versa | |
328 #ifdef PRODUCT | |
329 #define trueInProduct true | |
330 #define falseInProduct false | |
331 #else | |
332 #define trueInProduct false | |
333 #define falseInProduct true | |
334 #endif | |
335 | |
336 // use this for flags that are true per default in the tiered build | |
337 // but false in non-tiered builds, and vice versa | |
338 #ifdef TIERED | |
339 #define trueInTiered true | |
340 #define falseInTiered false | |
341 #else | |
342 #define trueInTiered false | |
343 #define falseInTiered true | |
344 #endif | |
345 | |
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346 #ifdef JAVASE_EMBEDDED |
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347 #define falseInEmbedded false |
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348 #else |
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349 #define falseInEmbedded true |
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350 #endif |
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351 |
0 | 352 // develop flags are settable / visible only during development and are constant in the PRODUCT version |
353 // product flags are always settable / visible | |
354 // notproduct flags are settable / visible only during development and are not declared in the PRODUCT version | |
355 | |
356 // A flag must be declared with one of the following types: | |
357 // bool, intx, uintx, ccstr. | |
358 // The type "ccstr" is an alias for "const char*" and is used | |
359 // only in this file, because the macrology requires single-token type names. | |
360 | |
361 // Note: Diagnostic options not meant for VM tuning or for product modes. | |
362 // They are to be used for VM quality assurance or field diagnosis | |
363 // of VM bugs. They are hidden so that users will not be encouraged to | |
364 // try them as if they were VM ordinary execution options. However, they | |
365 // are available in the product version of the VM. Under instruction | |
366 // from support engineers, VM customers can turn them on to collect | |
367 // diagnostic information about VM problems. To use a VM diagnostic | |
368 // option, you must first specify +UnlockDiagnosticVMOptions. | |
369 // (This master switch also affects the behavior of -Xprintflags.) | |
350
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370 // |
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371 // experimental flags are in support of features that are not |
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372 // part of the officially supported product, but are available |
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373 // for experimenting with. They could, for example, be performance |
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374 // features that may not have undergone full or rigorous QA, but which may |
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375 // help performance in some cases and released for experimentation |
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376 // by the community of users and developers. This flag also allows one to |
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377 // be able to build a fully supported product that nonetheless also |
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378 // ships with some unsupported, lightly tested, experimental features. |
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379 // Like the UnlockDiagnosticVMOptions flag above, there is a corresponding |
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380 // UnlockExperimentalVMOptions flag, which allows the control and |
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381 // modification of the experimental flags. |
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382 // |
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383 // Nota bene: neither diagnostic nor experimental options should be used casually, |
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384 // and they are not supported on production loads, except under explicit |
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385 // direction from support engineers. |
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386 // |
0 | 387 // manageable flags are writeable external product flags. |
388 // They are dynamically writeable through the JDK management interface | |
389 // (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole. | |
390 // These flags are external exported interface (see CCC). The list of | |
391 // manageable flags can be queried programmatically through the management | |
392 // interface. | |
393 // | |
394 // A flag can be made as "manageable" only if | |
395 // - the flag is defined in a CCC as an external exported interface. | |
396 // - the VM implementation supports dynamic setting of the flag. | |
397 // This implies that the VM must *always* query the flag variable | |
398 // and not reuse state related to the flag state at any given time. | |
399 // - you want the flag to be queried programmatically by the customers. | |
400 // | |
401 // product_rw flags are writeable internal product flags. | |
402 // They are like "manageable" flags but for internal/private use. | |
403 // The list of product_rw flags are internal/private flags which | |
404 // may be changed/removed in a future release. It can be set | |
405 // through the management interface to get/set value | |
406 // when the name of flag is supplied. | |
407 // | |
408 // A flag can be made as "product_rw" only if | |
409 // - the VM implementation supports dynamic setting of the flag. | |
410 // This implies that the VM must *always* query the flag variable | |
411 // and not reuse state related to the flag state at any given time. | |
412 // | |
413 // Note that when there is a need to support develop flags to be writeable, | |
414 // it can be done in the same way as product_rw. | |
415 | |
350
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416 #define RUNTIME_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw, lp64_product) \ |
113
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417 \ |
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418 lp64_product(bool, UseCompressedOops, false, \ |
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419 "Use 32-bit object references in 64-bit VM. " \ |
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420 "lp64_product means flag is always constant in 32 bit VM") \ |
0 | 421 \ |
642
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422 notproduct(bool, CheckCompressedOops, true, \ |
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423 "generate checks in encoding/decoding code in debug VM") \ |
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424 \ |
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425 product_pd(uintx, HeapBaseMinAddress, \ |
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426 "OS specific low limit for heap base address") \ |
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427 \ |
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428 diagnostic(bool, PrintCompressedOopsMode, false, \ |
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429 "Print compressed oops base address and encoding mode") \ |
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430 \ |
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431 lp64_product(intx, ObjectAlignmentInBytes, 8, \ |
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432 "Default object alignment in bytes, 8 is minimum") \ |
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433 \ |
0 | 434 /* UseMembar is theoretically a temp flag used for memory barrier \ |
435 * removal testing. It was supposed to be removed before FCS but has \ | |
436 * been re-added (see 6401008) */ \ | |
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437 product_pd(bool, UseMembar, \ |
0 | 438 "(Unstable) Issues membars on thread state transitions") \ |
439 \ | |
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440 /* Temp PPC Flag to allow disabling the use of lwsync on ppc platforms \ |
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441 * that don't support it. This will be replaced by processor detection \ |
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442 * logic. \ |
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443 */ \ |
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444 product(bool, UsePPCLWSYNC, true, \ |
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445 "Use lwsync instruction if true, else use slower sync") \ |
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446 \ |
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447 develop(bool, CleanChunkPoolAsync, falseInEmbedded, \ |
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448 "Whether to clean the chunk pool asynchronously") \ |
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449 \ |
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450 /* Temporary: See 6948537 */ \ |
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451 experimental(bool, UseMemSetInBOT, true, \ |
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452 "(Unstable) uses memset in BOT updates in GC code") \ |
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453 \ |
0 | 454 diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \ |
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455 "Enable normal processing of flags relating to field diagnostics")\ |
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456 \ |
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457 experimental(bool, UnlockExperimentalVMOptions, false, \ |
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458 "Enable normal processing of flags relating to experimental features")\ |
0 | 459 \ |
460 product(bool, JavaMonitorsInStackTrace, true, \ | |
461 "Print info. about Java monitor locks when the stacks are dumped")\ | |
462 \ | |
463 product_pd(bool, UseLargePages, \ | |
464 "Use large page memory") \ | |
465 \ | |
389
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466 product_pd(bool, UseLargePagesIndividualAllocation, \ |
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467 "Allocate large pages individually for better affinity") \ |
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468 \ |
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469 develop(bool, LargePagesIndividualAllocationInjectError, false, \ |
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470 "Fail large pages individual allocation") \ |
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471 \ |
0 | 472 develop(bool, TracePageSizes, false, \ |
473 "Trace page size selection and usage.") \ | |
474 \ | |
475 product(bool, UseNUMA, false, \ | |
476 "Use NUMA if available") \ | |
477 \ | |
3885 | 478 product(bool, UseNUMAInterleaving, false, \ |
479 "Interleave memory across NUMA nodes if available") \ | |
480 \ | |
481 product(uintx, NUMAInterleaveGranularity, 2*M, \ | |
482 "Granularity to use for NUMA interleaving on Windows OS") \ | |
483 \ | |
462
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484 product(bool, ForceNUMA, false, \ |
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485 "Force NUMA optimizations on single-node/UMA systems") \ |
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486 \ |
0 | 487 product(intx, NUMAChunkResizeWeight, 20, \ |
488 "Percentage (0-100) used to weight the current sample when " \ | |
489 "computing exponentially decaying average for " \ | |
490 "AdaptiveNUMAChunkSizing") \ | |
491 \ | |
492 product(intx, NUMASpaceResizeRate, 1*G, \ | |
493 "Do not reallocate more that this amount per collection") \ | |
494 \ | |
495 product(bool, UseAdaptiveNUMAChunkSizing, true, \ | |
496 "Enable adaptive chunk sizing for NUMA") \ | |
497 \ | |
498 product(bool, NUMAStats, false, \ | |
499 "Print NUMA stats in detailed heap information") \ | |
500 \ | |
501 product(intx, NUMAPageScanRate, 256, \ | |
502 "Maximum number of pages to include in the page scan procedure") \ | |
503 \ | |
504 product_pd(bool, NeedsDeoptSuspend, \ | |
505 "True for register window machines (sparc/ia64)") \ | |
506 \ | |
507 product(intx, UseSSE, 99, \ | |
508 "Highest supported SSE instructions set on x86/x64") \ | |
509 \ | |
3804 | 510 product(intx, UseVIS, 99, \ |
511 "Highest supported VIS instructions set on Sparc") \ | |
512 \ | |
0 | 513 product(uintx, LargePageSizeInBytes, 0, \ |
514 "Large page size (0 to let VM choose the page size") \ | |
515 \ | |
516 product(uintx, LargePageHeapSizeThreshold, 128*M, \ | |
517 "Use large pages if max heap is at least this big") \ | |
518 \ | |
519 product(bool, ForceTimeHighResolution, false, \ | |
520 "Using high time resolution(For Win32 only)") \ | |
521 \ | |
522 develop(bool, TraceItables, false, \ | |
523 "Trace initialization and use of itables") \ | |
524 \ | |
525 develop(bool, TracePcPatching, false, \ | |
526 "Trace usage of frame::patch_pc") \ | |
527 \ | |
528 develop(bool, TraceJumps, false, \ | |
529 "Trace assembly jumps in thread ring buffer") \ | |
530 \ | |
531 develop(bool, TraceRelocator, false, \ | |
532 "Trace the bytecode relocator") \ | |
533 \ | |
534 develop(bool, TraceLongCompiles, false, \ | |
535 "Print out every time compilation is longer than " \ | |
536 "a given threashold") \ | |
537 \ | |
538 develop(bool, SafepointALot, false, \ | |
539 "Generates a lot of safepoints. Works with " \ | |
540 "GuaranteedSafepointInterval") \ | |
541 \ | |
542 product_pd(bool, BackgroundCompilation, \ | |
543 "A thread requesting compilation is not blocked during " \ | |
544 "compilation") \ | |
545 \ | |
546 product(bool, PrintVMQWaitTime, false, \ | |
547 "Prints out the waiting time in VM operation queue") \ | |
548 \ | |
549 develop(bool, BailoutToInterpreterForThrows, false, \ | |
550 "Compiled methods which throws/catches exceptions will be " \ | |
551 "deopt and intp.") \ | |
552 \ | |
553 develop(bool, NoYieldsInMicrolock, false, \ | |
554 "Disable yields in microlock") \ | |
555 \ | |
556 develop(bool, TraceOopMapGeneration, false, \ | |
557 "Shows oopmap generation") \ | |
558 \ | |
559 product(bool, MethodFlushing, true, \ | |
560 "Reclamation of zombie and not-entrant methods") \ | |
561 \ | |
562 develop(bool, VerifyStack, false, \ | |
563 "Verify stack of each thread when it is entering a runtime call") \ | |
564 \ | |
565 develop(bool, ForceUnreachable, false, \ | |
566 "(amd64) Make all non code cache addresses to be unreachable with rip-rel forcing use of 64bit literal fixups") \ | |
567 \ | |
568 notproduct(bool, StressDerivedPointers, false, \ | |
569 "Force scavenge when a derived pointers is detected on stack " \ | |
570 "after rtm call") \ | |
571 \ | |
572 develop(bool, TraceDerivedPointers, false, \ | |
573 "Trace traversal of derived pointers on stack") \ | |
574 \ | |
575 notproduct(bool, TraceCodeBlobStacks, false, \ | |
576 "Trace stack-walk of codeblobs") \ | |
577 \ | |
578 product(bool, PrintJNIResolving, false, \ | |
579 "Used to implement -v:jni") \ | |
580 \ | |
581 notproduct(bool, PrintRewrites, false, \ | |
582 "Print methods that are being rewritten") \ | |
583 \ | |
584 product(bool, UseInlineCaches, true, \ | |
585 "Use Inline Caches for virtual calls ") \ | |
586 \ | |
587 develop(bool, InlineArrayCopy, true, \ | |
588 "inline arraycopy native that is known to be part of " \ | |
589 "base library DLL") \ | |
590 \ | |
591 develop(bool, InlineObjectHash, true, \ | |
592 "inline Object::hashCode() native that is known to be part " \ | |
593 "of base library DLL") \ | |
594 \ | |
595 develop(bool, InlineObjectCopy, true, \ | |
596 "inline Object.clone and Arrays.copyOf[Range] intrinsics") \ | |
597 \ | |
598 develop(bool, InlineNatives, true, \ | |
599 "inline natives that are known to be part of base library DLL") \ | |
600 \ | |
601 develop(bool, InlineMathNatives, true, \ | |
602 "inline SinD, CosD, etc.") \ | |
603 \ | |
604 develop(bool, InlineClassNatives, true, \ | |
605 "inline Class.isInstance, etc") \ | |
606 \ | |
607 develop(bool, InlineAtomicLong, true, \ | |
608 "inline sun.misc.AtomicLong") \ | |
609 \ | |
610 develop(bool, InlineThreadNatives, true, \ | |
611 "inline Thread.currentThread, etc") \ | |
612 \ | |
613 develop(bool, InlineReflectionGetCallerClass, true, \ | |
614 "inline sun.reflect.Reflection.getCallerClass(), known to be part "\ | |
615 "of base library DLL") \ | |
616 \ | |
617 develop(bool, InlineUnsafeOps, true, \ | |
618 "inline memory ops (native methods) from sun.misc.Unsafe") \ | |
619 \ | |
620 develop(bool, ConvertCmpD2CmpF, true, \ | |
621 "Convert cmpD to cmpF when one input is constant in float range") \ | |
622 \ | |
623 develop(bool, ConvertFloat2IntClipping, true, \ | |
624 "Convert float2int clipping idiom to integer clipping") \ | |
625 \ | |
626 develop(bool, SpecialStringCompareTo, true, \ | |
627 "special version of string compareTo") \ | |
628 \ | |
629 develop(bool, SpecialStringIndexOf, true, \ | |
630 "special version of string indexOf") \ | |
631 \ | |
681 | 632 develop(bool, SpecialStringEquals, true, \ |
633 "special version of string equals") \ | |
634 \ | |
635 develop(bool, SpecialArraysEquals, true, \ | |
169
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636 "special version of Arrays.equals(char[],char[])") \ |
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637 \ |
681 | 638 product(bool, UseSSE42Intrinsics, false, \ |
639 "SSE4.2 versions of intrinsics") \ | |
640 \ | |
3282 | 641 product(bool, UseCondCardMark, false, \ |
642 "Check for already marked card before updating card table") \ | |
643 \ | |
0 | 644 develop(bool, TraceCallFixup, false, \ |
645 "traces all call fixups") \ | |
646 \ | |
647 develop(bool, DeoptimizeALot, false, \ | |
648 "deoptimize at every exit from the runtime system") \ | |
649 \ | |
434 | 650 notproduct(ccstrlist, DeoptimizeOnlyAt, "", \ |
0 | 651 "a comma separated list of bcis to deoptimize at") \ |
652 \ | |
653 product(bool, DeoptimizeRandom, false, \ | |
654 "deoptimize random frames on random exit from the runtime system")\ | |
655 \ | |
656 notproduct(bool, ZombieALot, false, \ | |
657 "creates zombies (non-entrant) at exit from the runt. system") \ | |
658 \ | |
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659 product(bool, UnlinkSymbolsALot, false, \ |
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660 "unlink unreferenced symbols from the symbol table at safepoints")\ |
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661 \ |
0 | 662 notproduct(bool, WalkStackALot, false, \ |
663 "trace stack (no print) at every exit from the runtime system") \ | |
664 \ | |
665 develop(bool, Debugging, false, \ | |
666 "set when executing debug methods in debug.ccp " \ | |
667 "(to prevent triggering assertions)") \ | |
668 \ | |
669 notproduct(bool, StrictSafepointChecks, trueInDebug, \ | |
670 "Enable strict checks that safepoints cannot happen for threads " \ | |
671 "that used No_Safepoint_Verifier") \ | |
672 \ | |
673 notproduct(bool, VerifyLastFrame, false, \ | |
674 "Verify oops on last frame on entry to VM") \ | |
675 \ | |
676 develop(bool, TraceHandleAllocation, false, \ | |
677 "Prints out warnings when suspicious many handles are allocated") \ | |
678 \ | |
679 product(bool, UseCompilerSafepoints, true, \ | |
680 "Stop at safepoints in compiled code") \ | |
681 \ | |
682 product(bool, UseSplitVerifier, true, \ | |
683 "use split verifier with StackMapTable attributes") \ | |
684 \ | |
685 product(bool, FailOverToOldVerifier, true, \ | |
686 "fail over to old verifier when split verifier fails") \ | |
687 \ | |
688 develop(bool, ShowSafepointMsgs, false, \ | |
689 "Show msg. about safepoint synch.") \ | |
690 \ | |
691 product(bool, SafepointTimeout, false, \ | |
692 "Time out and warn or fail after SafepointTimeoutDelay " \ | |
693 "milliseconds if failed to reach safepoint") \ | |
694 \ | |
695 develop(bool, DieOnSafepointTimeout, false, \ | |
696 "Die upon failure to reach safepoint (see SafepointTimeout)") \ | |
697 \ | |
698 /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \ | |
699 /* typically, at most a few retries are needed */ \ | |
700 product(intx, SuspendRetryCount, 50, \ | |
701 "Maximum retry count for an external suspend request") \ | |
702 \ | |
703 product(intx, SuspendRetryDelay, 5, \ | |
704 "Milliseconds to delay per retry (* current_retry_count)") \ | |
705 \ | |
706 product(bool, AssertOnSuspendWaitFailure, false, \ | |
707 "Assert/Guarantee on external suspend wait failure") \ | |
708 \ | |
709 product(bool, TraceSuspendWaitFailures, false, \ | |
710 "Trace external suspend wait failures") \ | |
711 \ | |
712 product(bool, MaxFDLimit, true, \ | |
713 "Bump the number of file descriptors to max in solaris.") \ | |
714 \ | |
715 notproduct(bool, LogEvents, trueInDebug, \ | |
716 "Enable Event log") \ | |
717 \ | |
718 product(bool, BytecodeVerificationRemote, true, \ | |
719 "Enables the Java bytecode verifier for remote classes") \ | |
720 \ | |
721 product(bool, BytecodeVerificationLocal, false, \ | |
722 "Enables the Java bytecode verifier for local classes") \ | |
723 \ | |
724 develop(bool, ForceFloatExceptions, trueInDebug, \ | |
725 "Force exceptions on FP stack under/overflow") \ | |
726 \ | |
727 develop(bool, SoftMatchFailure, trueInProduct, \ | |
728 "If the DFA fails to match a node, print a message and bail out") \ | |
729 \ | |
730 develop(bool, VerifyStackAtCalls, false, \ | |
731 "Verify that the stack pointer is unchanged after calls") \ | |
732 \ | |
733 develop(bool, TraceJavaAssertions, false, \ | |
734 "Trace java language assertions") \ | |
735 \ | |
736 notproduct(bool, CheckAssertionStatusDirectives, false, \ | |
737 "temporary - see javaClasses.cpp") \ | |
738 \ | |
739 notproduct(bool, PrintMallocFree, false, \ | |
740 "Trace calls to C heap malloc/free allocation") \ | |
741 \ | |
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742 product(bool, PrintOopAddress, false, \ |
0 | 743 "Always print the location of the oop") \ |
744 \ | |
745 notproduct(bool, VerifyCodeCacheOften, false, \ | |
746 "Verify compiled-code cache often") \ | |
747 \ | |
748 develop(bool, ZapDeadCompiledLocals, false, \ | |
749 "Zap dead locals in compiler frames") \ | |
750 \ | |
751 notproduct(bool, ZapDeadLocalsOld, false, \ | |
752 "Zap dead locals (old version, zaps all frames when " \ | |
753 "entering the VM") \ | |
754 \ | |
755 notproduct(bool, CheckOopishValues, false, \ | |
756 "Warn if value contains oop ( requires ZapDeadLocals)") \ | |
757 \ | |
758 develop(bool, UseMallocOnly, false, \ | |
759 "use only malloc/free for allocation (no resource area/arena)") \ | |
760 \ | |
761 develop(bool, PrintMalloc, false, \ | |
762 "print all malloc/free calls") \ | |
763 \ | |
2250 | 764 develop(bool, PrintMallocStatistics, false, \ |
765 "print malloc/free statistics") \ | |
766 \ | |
0 | 767 develop(bool, ZapResourceArea, trueInDebug, \ |
768 "Zap freed resource/arena space with 0xABABABAB") \ | |
769 \ | |
770 notproduct(bool, ZapVMHandleArea, trueInDebug, \ | |
771 "Zap freed VM handle space with 0xBCBCBCBC") \ | |
772 \ | |
773 develop(bool, ZapJNIHandleArea, trueInDebug, \ | |
774 "Zap freed JNI handle space with 0xFEFEFEFE") \ | |
775 \ | |
1836
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776 notproduct(bool, ZapStackSegments, trueInDebug, \ |
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777 "Zap allocated/freed Stack segments with 0xFADFADED") \ |
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778 \ |
263
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779 develop(bool, ZapUnusedHeapArea, trueInDebug, \ |
0 | 780 "Zap unused heap space with 0xBAADBABE") \ |
781 \ | |
263
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782 develop(bool, TraceZapUnusedHeapArea, false, \ |
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783 "Trace zapping of unused heap space") \ |
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784 \ |
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785 develop(bool, CheckZapUnusedHeapArea, false, \ |
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786 "Check zapping of unused heap space") \ |
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787 \ |
481
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788 develop(bool, ZapFillerObjects, trueInDebug, \ |
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|
789 "Zap filler objects with 0xDEAFBABE") \ |
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790 \ |
0 | 791 develop(bool, PrintVMMessages, true, \ |
792 "Print vm messages on console") \ | |
793 \ | |
794 product(bool, PrintGCApplicationConcurrentTime, false, \ | |
795 "Print the time the application has been running") \ | |
796 \ | |
797 product(bool, PrintGCApplicationStoppedTime, false, \ | |
798 "Print the time the application has been stopped") \ | |
799 \ | |
1490
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800 notproduct(uintx, ErrorHandlerTest, 0, \ |
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801 "If > 0, provokes an error after VM initialization; the value" \ |
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802 "determines which error to provoke. See test_error_handler()" \ |
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803 "in debug.cpp.") \ |
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804 \ |
0 | 805 develop(bool, Verbose, false, \ |
806 "Prints additional debugging information from other modes") \ | |
807 \ | |
808 develop(bool, PrintMiscellaneous, false, \ | |
809 "Prints uncategorized debugging information (requires +Verbose)") \ | |
810 \ | |
811 develop(bool, WizardMode, false, \ | |
812 "Prints much more debugging information") \ | |
813 \ | |
814 product(bool, ShowMessageBoxOnError, false, \ | |
815 "Keep process alive on VM fatal error") \ | |
816 \ | |
2204
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817 product(bool, CreateMinidumpOnCrash, false, \ |
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diff
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|
818 "Create minidump on VM fatal error") \ |
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|
819 \ |
0 | 820 product_pd(bool, UseOSErrorReporting, \ |
821 "Let VM fatal error propagate to the OS (ie. WER on Windows)") \ | |
822 \ | |
823 product(bool, SuppressFatalErrorMessage, false, \ | |
824 "Do NO Fatal Error report [Avoid deadlock]") \ | |
825 \ | |
826 product(ccstrlist, OnError, "", \ | |
827 "Run user-defined commands on fatal error; see VMError.cpp " \ | |
828 "for examples") \ | |
829 \ | |
830 product(ccstrlist, OnOutOfMemoryError, "", \ | |
831 "Run user-defined commands on first java.lang.OutOfMemoryError") \ | |
832 \ | |
615
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833 manageable(bool, HeapDumpBeforeFullGC, false, \ |
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|
834 "Dump heap to file before any major stop-world GC") \ |
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|
835 \ |
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|
836 manageable(bool, HeapDumpAfterFullGC, false, \ |
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|
837 "Dump heap to file after any major stop-world GC") \ |
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|
838 \ |
0 | 839 manageable(bool, HeapDumpOnOutOfMemoryError, false, \ |
840 "Dump heap to file when java.lang.OutOfMemoryError is thrown") \ | |
841 \ | |
842 manageable(ccstr, HeapDumpPath, NULL, \ | |
843 "When HeapDumpOnOutOfMemoryError is on, the path (filename or" \ | |
844 "directory) of the dump file (defaults to java_pid<pid>.hprof" \ | |
845 "in the working directory)") \ | |
846 \ | |
847 develop(uintx, SegmentedHeapDumpThreshold, 2*G, \ | |
848 "Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) " \ | |
849 "when the heap usage is larger than this") \ | |
850 \ | |
851 develop(uintx, HeapDumpSegmentSize, 1*G, \ | |
852 "Approximate segment size when generating a segmented heap dump") \ | |
853 \ | |
854 develop(bool, BreakAtWarning, false, \ | |
855 "Execute breakpoint upon encountering VM warning") \ | |
856 \ | |
857 product_pd(bool, UseVectoredExceptions, \ | |
858 "Temp Flag - Use Vectored Exceptions rather than SEH (Windows Only)") \ | |
859 \ | |
860 develop(bool, TraceVMOperation, false, \ | |
861 "Trace vm operations") \ | |
862 \ | |
863 develop(bool, UseFakeTimers, false, \ | |
864 "Tells whether the VM should use system time or a fake timer") \ | |
865 \ | |
866 diagnostic(bool, LogCompilation, false, \ | |
867 "Log compilation activity in detail to hotspot.log or LogFile") \ | |
868 \ | |
869 product(bool, PrintCompilation, false, \ | |
870 "Print compilations") \ | |
871 \ | |
872 diagnostic(bool, TraceNMethodInstalls, false, \ | |
873 "Trace nmethod intallation") \ | |
874 \ | |
2379
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875 diagnostic(intx, ScavengeRootsInCode, 1, \ |
989
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876 "0: do not allow scavengable oops in the code cache; " \ |
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877 "1: allow scavenging from the code cache; " \ |
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878 "2: emit as many constants as the compiler can see") \ |
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|
879 \ |
0 | 880 diagnostic(bool, TraceOSRBreakpoint, false, \ |
881 "Trace OSR Breakpoint ") \ | |
882 \ | |
883 diagnostic(bool, TraceCompileTriggered, false, \ | |
884 "Trace compile triggered") \ | |
885 \ | |
886 diagnostic(bool, TraceTriggers, false, \ | |
887 "Trace triggers") \ | |
888 \ | |
889 product(bool, AlwaysRestoreFPU, false, \ | |
890 "Restore the FPU control word after every JNI call (expensive)") \ | |
891 \ | |
892 notproduct(bool, PrintCompilation2, false, \ | |
893 "Print additional statistics per compilation") \ | |
894 \ | |
100
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895 diagnostic(bool, PrintAdapterHandlers, false, \ |
0 | 896 "Print code generated for i2c/c2i adapters") \ |
897 \ | |
1207
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|
898 develop(bool, VerifyAdapterSharing, false, \ |
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|
899 "Verify that the code for shared adapters is the equivalent") \ |
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|
900 \ |
100
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|
901 diagnostic(bool, PrintAssembly, false, \ |
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|
902 "Print assembly code (using external disassembler.so)") \ |
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|
903 \ |
370
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|
904 diagnostic(ccstr, PrintAssemblyOptions, NULL, \ |
100
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|
905 "Options string passed to disassembler.so") \ |
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|
906 \ |
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|
907 diagnostic(bool, PrintNMethods, false, \ |
0 | 908 "Print assembly code for nmethods when generated") \ |
909 \ | |
100
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|
910 diagnostic(bool, PrintNativeNMethods, false, \ |
0 | 911 "Print assembly code for native nmethods when generated") \ |
912 \ | |
913 develop(bool, PrintDebugInfo, false, \ | |
914 "Print debug information for all nmethods when generated") \ | |
915 \ | |
916 develop(bool, PrintRelocations, false, \ | |
917 "Print relocation information for all nmethods when generated") \ | |
918 \ | |
919 develop(bool, PrintDependencies, false, \ | |
920 "Print dependency information for all nmethods when generated") \ | |
921 \ | |
922 develop(bool, PrintExceptionHandlers, false, \ | |
923 "Print exception handler tables for all nmethods when generated") \ | |
924 \ | |
925 develop(bool, InterceptOSException, false, \ | |
926 "Starts debugger when an implicit OS (e.g., NULL) " \ | |
927 "exception happens") \ | |
928 \ | |
929 notproduct(bool, PrintCodeCache, false, \ | |
930 "Print the compiled_code cache when exiting") \ | |
931 \ | |
932 develop(bool, PrintCodeCache2, false, \ | |
933 "Print detailed info on the compiled_code cache when exiting") \ | |
934 \ | |
100
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|
935 diagnostic(bool, PrintStubCode, false, \ |
0 | 936 "Print generated stub code") \ |
937 \ | |
938 product(bool, StackTraceInThrowable, true, \ | |
939 "Collect backtrace in throwable when exception happens") \ | |
940 \ | |
941 product(bool, OmitStackTraceInFastThrow, true, \ | |
942 "Omit backtraces for some 'hot' exceptions in optimized code") \ | |
943 \ | |
944 product(bool, ProfilerPrintByteCodeStatistics, false, \ | |
945 "Prints byte code statictics when dumping profiler output") \ | |
946 \ | |
947 product(bool, ProfilerRecordPC, false, \ | |
948 "Collects tick for each 16 byte interval of compiled code") \ | |
949 \ | |
1064 | 950 product(bool, ProfileVM, false, \ |
0 | 951 "Profiles ticks that fall within VM (either in the VM Thread " \ |
952 "or VM code called through stubs)") \ | |
953 \ | |
954 product(bool, ProfileIntervals, false, \ | |
955 "Prints profiles for each interval (see ProfileIntervalsTicks)") \ | |
956 \ | |
957 notproduct(bool, ProfilerCheckIntervals, false, \ | |
958 "Collect and print info on spacing of profiler ticks") \ | |
959 \ | |
960 develop(bool, PrintJVMWarnings, false, \ | |
961 "Prints warnings for unimplemented JVM functions") \ | |
962 \ | |
1870
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|
963 product(bool, PrintWarnings, true, \ |
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diff
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|
964 "Prints JVM warnings to output stream") \ |
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|
965 \ |
0 | 966 notproduct(uintx, WarnOnStalledSpinLock, 0, \ |
967 "Prints warnings for stalled SpinLocks") \ | |
968 \ | |
969 develop(bool, InitializeJavaLangSystem, true, \ | |
970 "Initialize java.lang.System - turn off for individual " \ | |
971 "method debugging") \ | |
972 \ | |
973 develop(bool, InitializeJavaLangString, true, \ | |
974 "Initialize java.lang.String - turn off for individual " \ | |
975 "method debugging") \ | |
976 \ | |
977 develop(bool, InitializeJavaLangExceptionsErrors, true, \ | |
978 "Initialize various error and exception classes - turn off for " \ | |
979 "individual method debugging") \ | |
980 \ | |
981 product(bool, RegisterFinalizersAtInit, true, \ | |
982 "Register finalizable objects at end of Object.<init> or " \ | |
1064 | 983 "after allocation") \ |
0 | 984 \ |
985 develop(bool, RegisterReferences, true, \ | |
986 "Tells whether the VM should register soft/weak/final/phantom " \ | |
987 "references") \ | |
988 \ | |
989 develop(bool, IgnoreRewrites, false, \ | |
990 "Supress rewrites of bytecodes in the oopmap generator. " \ | |
991 "This is unsafe!") \ | |
992 \ | |
993 develop(bool, PrintCodeCacheExtension, false, \ | |
994 "Print extension of code cache") \ | |
995 \ | |
996 develop(bool, UsePrivilegedStack, true, \ | |
997 "Enable the security JVM functions") \ | |
998 \ | |
999 develop(bool, IEEEPrecision, true, \ | |
1000 "Enables IEEE precision (for INTEL only)") \ | |
1001 \ | |
1002 develop(bool, ProtectionDomainVerification, true, \ | |
1003 "Verifies protection domain before resolution in system " \ | |
1004 "dictionary") \ | |
1005 \ | |
1006 product(bool, ClassUnloading, true, \ | |
1007 "Do unloading of classes") \ | |
1008 \ | |
474
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1009 diagnostic(bool, LinkWellKnownClasses, false, \ |
132
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1010 "Resolve a well known class as soon as its name is seen") \ |
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1011 \ |
0 | 1012 develop(bool, DisableStartThread, false, \ |
1013 "Disable starting of additional Java threads " \ | |
1014 "(for debugging only)") \ | |
1015 \ | |
1016 develop(bool, MemProfiling, false, \ | |
1017 "Write memory usage profiling to log file") \ | |
1018 \ | |
1019 notproduct(bool, PrintSystemDictionaryAtExit, false, \ | |
1020 "Prints the system dictionary at exit") \ | |
1021 \ | |
1022 diagnostic(bool, UnsyncloadClass, false, \ | |
514 | 1023 "Unstable: VM calls loadClass unsynchronized. Custom " \ |
1024 "class loader must call VM synchronized for findClass " \ | |
1025 "and defineClass.") \ | |
1026 \ | |
1027 product(bool, AlwaysLockClassLoader, false, \ | |
1028 "Require the VM to acquire the class loader lock before calling " \ | |
1029 "loadClass() even for class loaders registering " \ | |
1064 | 1030 "as parallel capable") \ |
514 | 1031 \ |
1032 product(bool, AllowParallelDefineClass, false, \ | |
1033 "Allow parallel defineClass requests for class loaders " \ | |
1064 | 1034 "registering as parallel capable") \ |
514 | 1035 \ |
1036 product(bool, MustCallLoadClassInternal, false, \ | |
1064 | 1037 "Call loadClassInternal() rather than loadClass()") \ |
0 | 1038 \ |
1039 product_pd(bool, DontYieldALot, \ | |
1040 "Throw away obvious excess yield calls (for SOLARIS only)") \ | |
1041 \ | |
1042 product_pd(bool, ConvertSleepToYield, \ | |
1043 "Converts sleep(0) to thread yield " \ | |
1044 "(may be off for SOLARIS to improve GUI)") \ | |
1045 \ | |
1046 product(bool, ConvertYieldToSleep, false, \ | |
1047 "Converts yield to a sleep of MinSleepInterval to simulate Win32 "\ | |
1048 "behavior (SOLARIS only)") \ | |
1049 \ | |
1050 product(bool, UseBoundThreads, true, \ | |
1051 "Bind user level threads to kernel threads (for SOLARIS only)") \ | |
1052 \ | |
1053 develop(bool, UseDetachedThreads, true, \ | |
1054 "Use detached threads that are recycled upon termination " \ | |
1055 "(for SOLARIS only)") \ | |
1056 \ | |
1057 product(bool, UseLWPSynchronization, true, \ | |
1058 "Use LWP-based instead of libthread-based synchronization " \ | |
1059 "(SPARC only)") \ | |
1060 \ | |
370
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1061 product(ccstr, SyncKnobs, NULL, \ |
0 | 1062 "(Unstable) Various monitor synchronization tunables") \ |
1063 \ | |
1064 product(intx, EmitSync, 0, \ | |
1065 "(Unsafe,Unstable) " \ | |
1066 " Controls emission of inline sync fast-path code") \ | |
1067 \ | |
1068 product(intx, AlwaysInflate, 0, "(Unstable) Force inflation") \ | |
1069 \ | |
1587 | 1070 product(intx, MonitorBound, 0, "Bound Monitor population") \ |
1071 \ | |
1072 product(bool, MonitorInUseLists, false, "Track Monitors for Deflation") \ | |
1073 \ | |
0 | 1074 product(intx, Atomics, 0, \ |
1075 "(Unsafe,Unstable) Diagnostic - Controls emission of atomics") \ | |
1076 \ | |
1077 product(intx, FenceInstruction, 0, \ | |
1078 "(Unsafe,Unstable) Experimental") \ | |
1079 \ | |
1080 product(intx, SyncFlags, 0, "(Unsafe,Unstable) Experimental Sync flags" ) \ | |
1081 \ | |
1082 product(intx, SyncVerbose, 0, "(Unstable)" ) \ | |
1083 \ | |
1084 product(intx, ClearFPUAtPark, 0, "(Unsafe,Unstable)" ) \ | |
1085 \ | |
1086 product(intx, hashCode, 0, \ | |
1087 "(Unstable) select hashCode generation algorithm" ) \ | |
1088 \ | |
1089 product(intx, WorkAroundNPTLTimedWaitHang, 1, \ | |
1090 "(Unstable, Linux-specific)" \ | |
1091 " avoid NPTL-FUTEX hang pthread_cond_timedwait" ) \ | |
1092 \ | |
1064 | 1093 product(bool, FilterSpuriousWakeups, true, \ |
1094 "Prevent spurious or premature wakeups from object.wait " \ | |
1095 "(Solaris only)") \ | |
0 | 1096 \ |
1097 product(intx, NativeMonitorTimeout, -1, "(Unstable)" ) \ | |
1098 product(intx, NativeMonitorFlags, 0, "(Unstable)" ) \ | |
1099 product(intx, NativeMonitorSpinLimit, 20, "(Unstable)" ) \ | |
1100 \ | |
1101 develop(bool, UsePthreads, false, \ | |
1102 "Use pthread-based instead of libthread-based synchronization " \ | |
1103 "(SPARC only)") \ | |
1104 \ | |
1105 product(bool, AdjustConcurrency, false, \ | |
1106 "call thr_setconcurrency at thread create time to avoid " \ | |
1107 "LWP starvation on MP systems (For Solaris Only)") \ | |
1108 \ | |
1109 develop(bool, UpdateHotSpotCompilerFileOnError, true, \ | |
1110 "Should the system attempt to update the compiler file when " \ | |
1111 "an error occurs?") \ | |
1112 \ | |
1113 product(bool, ReduceSignalUsage, false, \ | |
1114 "Reduce the use of OS signals in Java and/or the VM") \ | |
1115 \ | |
1116 notproduct(bool, ValidateMarkSweep, false, \ | |
1117 "Do extra validation during MarkSweep collection") \ | |
1118 \ | |
1119 notproduct(bool, RecordMarkSweepCompaction, false, \ | |
1120 "Enable GC-to-GC recording and querying of compaction during " \ | |
1121 "MarkSweep") \ | |
1122 \ | |
1123 develop_pd(bool, ShareVtableStubs, \ | |
1124 "Share vtable stubs (smaller code but worse branch prediction") \ | |
1125 \ | |
1126 develop(bool, LoadLineNumberTables, true, \ | |
1127 "Tells whether the class file parser loads line number tables") \ | |
1128 \ | |
1129 develop(bool, LoadLocalVariableTables, true, \ | |
1130 "Tells whether the class file parser loads local variable tables")\ | |
1131 \ | |
1132 develop(bool, LoadLocalVariableTypeTables, true, \ | |
1133 "Tells whether the class file parser loads local variable type tables")\ | |
1134 \ | |
1135 product(bool, AllowUserSignalHandlers, false, \ | |
1136 "Do not complain if the application installs signal handlers " \ | |
1137 "(Solaris & Linux only)") \ | |
1138 \ | |
1139 product(bool, UseSignalChaining, true, \ | |
1140 "Use signal-chaining to invoke signal handlers installed " \ | |
1141 "by the application (Solaris & Linux only)") \ | |
1142 \ | |
1143 product(bool, UseAltSigs, false, \ | |
1144 "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \ | |
1064 | 1145 "internal signals (Solaris only)") \ |
0 | 1146 \ |
1147 product(bool, UseSpinning, false, \ | |
1148 "Use spinning in monitor inflation and before entry") \ | |
1149 \ | |
1150 product(bool, PreSpinYield, false, \ | |
1151 "Yield before inner spinning loop") \ | |
1152 \ | |
1153 product(bool, PostSpinYield, true, \ | |
1154 "Yield after inner spinning loop") \ | |
1155 \ | |
1156 product(bool, AllowJNIEnvProxy, false, \ | |
1157 "Allow JNIEnv proxies for jdbx") \ | |
1158 \ | |
1159 product(bool, JNIDetachReleasesMonitors, true, \ | |
1160 "JNI DetachCurrentThread releases monitors owned by thread") \ | |
1161 \ | |
1162 product(bool, RestoreMXCSROnJNICalls, false, \ | |
1163 "Restore MXCSR when returning from JNI calls") \ | |
1164 \ | |
1165 product(bool, CheckJNICalls, false, \ | |
1166 "Verify all arguments to JNI calls") \ | |
1167 \ | |
1168 product(bool, UseFastJNIAccessors, true, \ | |
1169 "Use optimized versions of Get<Primitive>Field") \ | |
1170 \ | |
1171 product(bool, EagerXrunInit, false, \ | |
1172 "Eagerly initialize -Xrun libraries; allows startup profiling, " \ | |
1173 " but not all -Xrun libraries may support the state of the VM at this time") \ | |
1174 \ | |
1175 product(bool, PreserveAllAnnotations, false, \ | |
1176 "Preserve RuntimeInvisibleAnnotations as well as RuntimeVisibleAnnotations") \ | |
1177 \ | |
1178 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \ | |
1179 "Number of OutOfMemoryErrors preallocated with backtrace") \ | |
1180 \ | |
1181 product(bool, LazyBootClassLoader, true, \ | |
1182 "Enable/disable lazy opening of boot class path entries") \ | |
1183 \ | |
1184 diagnostic(bool, UseIncDec, true, \ | |
1185 "Use INC, DEC instructions on x86") \ | |
1186 \ | |
219 | 1187 product(bool, UseNewLongLShift, false, \ |
1188 "Use optimized bitwise shift left") \ | |
1189 \ | |
0 | 1190 product(bool, UseStoreImmI16, true, \ |
1191 "Use store immediate 16-bits value instruction on x86") \ | |
1192 \ | |
1193 product(bool, UseAddressNop, false, \ | |
1194 "Use '0F 1F [addr]' NOP instructions on x86 cpus") \ | |
1195 \ | |
1196 product(bool, UseXmmLoadAndClearUpper, true, \ | |
1197 "Load low part of XMM register and clear upper part") \ | |
1198 \ | |
1199 product(bool, UseXmmRegToRegMoveAll, false, \ | |
1200 "Copy all XMM register bits when moving value between registers") \ | |
1201 \ | |
71 | 1202 product(bool, UseXmmI2D, false, \ |
1203 "Use SSE2 CVTDQ2PD instruction to convert Integer to Double") \ | |
1204 \ | |
1205 product(bool, UseXmmI2F, false, \ | |
1206 "Use SSE2 CVTDQ2PS instruction to convert Integer to Float") \ | |
1207 \ | |
405 | 1208 product(bool, UseXMMForArrayCopy, false, \ |
1209 "Use SSE2 MOVQ instruction for Arraycopy") \ | |
1210 \ | |
1211 product(bool, UseUnalignedLoadStores, false, \ | |
1212 "Use SSE2 MOVDQU instruction for Arraycopy") \ | |
1213 \ | |
3839 | 1214 product(bool, UseCBCond, false, \ |
1215 "Use compare and branch instruction on SPARC") \ | |
1216 \ | |
0 | 1217 product(intx, FieldsAllocationStyle, 1, \ |
1366
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1365
diff
changeset
|
1218 "0 - type based with oops first, 1 - with oops last, " \ |
b9d85fcdf743
6940733: allocate non static oop fields in super and sub classes together
kvn
parents:
1365
diff
changeset
|
1219 "2 - oops in super and sub classes are together") \ |
0 | 1220 \ |
1221 product(bool, CompactFields, true, \ | |
1222 "Allocate nonstatic fields in gaps between previous fields") \ | |
1223 \ | |
1224 notproduct(bool, PrintCompactFieldsSavings, false, \ | |
1225 "Print how many words were saved with CompactFields") \ | |
1226 \ | |
1227 product(bool, UseBiasedLocking, true, \ | |
1228 "Enable biased locking in JVM") \ | |
1229 \ | |
1230 product(intx, BiasedLockingStartupDelay, 4000, \ | |
1231 "Number of milliseconds to wait before enabling biased locking") \ | |
1232 \ | |
1233 diagnostic(bool, PrintBiasedLockingStatistics, false, \ | |
1234 "Print statistics of biased locking in JVM") \ | |
1235 \ | |
1236 product(intx, BiasedLockingBulkRebiasThreshold, 20, \ | |
1237 "Threshold of number of revocations per type to try to " \ | |
1238 "rebias all objects in the heap of that type") \ | |
1239 \ | |
1240 product(intx, BiasedLockingBulkRevokeThreshold, 40, \ | |
1241 "Threshold of number of revocations per type to permanently " \ | |
1242 "revoke biases of all objects in the heap of that type") \ | |
1243 \ | |
1244 product(intx, BiasedLockingDecayTime, 25000, \ | |
1245 "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \ | |
1246 "type after previous bulk rebias") \ | |
1247 \ | |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
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parents:
2370
diff
changeset
|
1248 develop(bool, JavaObjectsInPerm, false, \ |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
1249 "controls whether Classes and interned Strings are allocated" \ |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
1250 "in perm. This purely intended to allow debugging issues" \ |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
1251 "in production.") \ |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
1252 \ |
0 | 1253 /* tracing */ \ |
1254 \ | |
1255 notproduct(bool, TraceRuntimeCalls, false, \ | |
1256 "Trace run-time calls") \ | |
1257 \ | |
1258 develop(bool, TraceJNICalls, false, \ | |
1259 "Trace JNI calls") \ | |
1260 \ | |
1261 notproduct(bool, TraceJVMCalls, false, \ | |
1262 "Trace JVM calls") \ | |
1263 \ | |
370
885fe0f95828
6744783: HotSpot segfaults if given -XX options with an empty string argument
never
parents:
325
diff
changeset
|
1264 product(ccstr, TraceJVMTI, NULL, \ |
0 | 1265 "Trace flags for JVMTI functions and events") \ |
1266 \ | |
1267 /* This option can change an EMCP method into an obsolete method. */ \ | |
1268 /* This can affect tests that except specific methods to be EMCP. */ \ | |
1269 /* This option should be used with caution. */ \ | |
1270 product(bool, StressLdcRewrite, false, \ | |
1271 "Force ldc -> ldc_w rewrite during RedefineClasses") \ | |
1272 \ | |
1273 product(intx, TraceRedefineClasses, 0, \ | |
1274 "Trace level for JVMTI RedefineClasses") \ | |
1275 \ | |
1574 | 1276 develop(bool, StressMethodComparator, false, \ |
1277 "run the MethodComparator on all loaded methods") \ | |
1278 \ | |
0 | 1279 /* change to false by default sometime after Mustang */ \ |
1280 product(bool, VerifyMergedCPBytecodes, true, \ | |
1281 "Verify bytecodes after RedefineClasses constant pool merging") \ | |
1282 \ | |
1283 develop(bool, TraceJNIHandleAllocation, false, \ | |
1284 "Trace allocation/deallocation of JNI handle blocks") \ | |
1285 \ | |
1286 develop(bool, TraceThreadEvents, false, \ | |
1287 "Trace all thread events") \ | |
1288 \ | |
1289 develop(bool, TraceBytecodes, false, \ | |
1290 "Trace bytecode execution") \ | |
1291 \ | |
1292 develop(bool, TraceClassInitialization, false, \ | |
1293 "Trace class initialization") \ | |
1294 \ | |
1295 develop(bool, TraceExceptions, false, \ | |
1296 "Trace exceptions") \ | |
1297 \ | |
1298 develop(bool, TraceICs, false, \ | |
1299 "Trace inline cache changes") \ | |
1300 \ | |
1301 notproduct(bool, TraceInvocationCounterOverflow, false, \ | |
1302 "Trace method invocation counter overflow") \ | |
1303 \ | |
1304 develop(bool, TraceInlineCacheClearing, false, \ | |
1305 "Trace clearing of inline caches in nmethods") \ | |
1306 \ | |
1307 develop(bool, TraceDependencies, false, \ | |
1308 "Trace dependencies") \ | |
1309 \ | |
1310 develop(bool, VerifyDependencies, trueInDebug, \ | |
1311 "Exercise and verify the compilation dependency mechanism") \ | |
1312 \ | |
1313 develop(bool, TraceNewOopMapGeneration, false, \ | |
1314 "Trace OopMapGeneration") \ | |
1315 \ | |
1316 develop(bool, TraceNewOopMapGenerationDetailed, false, \ | |
1317 "Trace OopMapGeneration: print detailed cell states") \ | |
1318 \ | |
1319 develop(bool, TimeOopMap, false, \ | |
1320 "Time calls to GenerateOopMap::compute_map() in sum") \ | |
1321 \ | |
1322 develop(bool, TimeOopMap2, false, \ | |
1323 "Time calls to GenerateOopMap::compute_map() individually") \ | |
1324 \ | |
1325 develop(bool, TraceMonitorMismatch, false, \ | |
1326 "Trace monitor matching failures during OopMapGeneration") \ | |
1327 \ | |
1328 develop(bool, TraceOopMapRewrites, false, \ | |
1329 "Trace rewritting of method oops during oop map generation") \ | |
1330 \ | |
1331 develop(bool, TraceSafepoint, false, \ | |
1332 "Trace safepoint operations") \ | |
1333 \ | |
1334 develop(bool, TraceICBuffer, false, \ | |
1335 "Trace usage of IC buffer") \ | |
1336 \ | |
1337 develop(bool, TraceCompiledIC, false, \ | |
1338 "Trace changes of compiled IC") \ | |
1339 \ | |
1340 notproduct(bool, TraceZapDeadLocals, false, \ | |
1341 "Trace zapping dead locals") \ | |
1342 \ | |
1343 develop(bool, TraceStartupTime, false, \ | |
1344 "Trace setup time") \ | |
1345 \ | |
1346 product(ccstr, HPILibPath, NULL, \ | |
1347 "Specify alternate path to HPI library") \ | |
1348 \ | |
1349 develop(bool, TraceProtectionDomainVerification, false, \ | |
1350 "Trace protection domain verifcation") \ | |
1351 \ | |
1352 develop(bool, TraceClearedExceptions, false, \ | |
1353 "Prints when an exception is forcibly cleared") \ | |
1354 \ | |
1355 product(bool, TraceClassResolution, false, \ | |
1356 "Trace all constant pool resolutions (for debugging)") \ | |
1357 \ | |
1358 product(bool, TraceBiasedLocking, false, \ | |
1359 "Trace biased locking in JVM") \ | |
1360 \ | |
1361 product(bool, TraceMonitorInflation, false, \ | |
1362 "Trace monitor inflation in JVM") \ | |
1363 \ | |
1364 /* assembler */ \ | |
1365 product(bool, Use486InstrsOnly, false, \ | |
1366 "Use 80486 Compliant instruction subset") \ | |
1367 \ | |
1368 /* gc */ \ | |
1369 \ | |
1370 product(bool, UseSerialGC, false, \ | |
342
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6711316: Open source the Garbage-First garbage collector
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142
diff
changeset
|
1371 "Use the serial garbage collector") \ |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
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diff
changeset
|
1372 \ |
1193
c81fa70144aa
6919980: G1: remove +UseG1GC from under experimental options (second attempt)
tonyp
parents:
1179
diff
changeset
|
1373 product(bool, UseG1GC, false, \ |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
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parents:
142
diff
changeset
|
1374 "Use the Garbage-First garbage collector") \ |
0 | 1375 \ |
1376 product(bool, UseParallelGC, false, \ | |
1377 "Use the Parallel Scavenge garbage collector") \ | |
1378 \ | |
1379 product(bool, UseParallelOldGC, false, \ | |
1380 "Use the Parallel Old garbage collector") \ | |
1381 \ | |
1382 product(uintx, HeapMaximumCompactionInterval, 20, \ | |
1383 "How often should we maximally compact the heap (not allowing " \ | |
1384 "any dead space)") \ | |
1385 \ | |
1386 product(uintx, HeapFirstMaximumCompactionCount, 3, \ | |
1387 "The collection count for the first maximum compaction") \ | |
1388 \ | |
1389 product(bool, UseMaximumCompactionOnSystemGC, true, \ | |
1390 "In the Parallel Old garbage collector maximum compaction for " \ | |
1391 "a system GC") \ | |
1392 \ | |
1393 product(uintx, ParallelOldDeadWoodLimiterMean, 50, \ | |
1394 "The mean used by the par compact dead wood" \ | |
1395 "limiter (a number between 0-100).") \ | |
1396 \ | |
1397 product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \ | |
1398 "The standard deviation used by the par compact dead wood" \ | |
1399 "limiter (a number between 0-100).") \ | |
1400 \ | |
1401 product(uintx, ParallelGCThreads, 0, \ | |
1402 "Number of parallel threads parallel gc will use") \ | |
1403 \ | |
483
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6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
481
diff
changeset
|
1404 develop(bool, ParallelOldGCSplitALot, false, \ |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
481
diff
changeset
|
1405 "Provoke splitting (copying data from a young gen space to" \ |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
481
diff
changeset
|
1406 "multiple destination spaces)") \ |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
481
diff
changeset
|
1407 \ |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
481
diff
changeset
|
1408 develop(uintx, ParallelOldGCSplitInterval, 3, \ |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
481
diff
changeset
|
1409 "How often to provoke splitting a young gen space") \ |
0 | 1410 \ |
375
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
374
diff
changeset
|
1411 develop(bool, TraceRegionTasksQueuing, false, \ |
81cd571500b0
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
374
diff
changeset
|
1412 "Trace the queuing of the region tasks") \ |
0 | 1413 \ |
1284 | 1414 product(uintx, ConcGCThreads, 0, \ |
1415 "Number of threads concurrent gc will use") \ | |
342
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142
diff
changeset
|
1416 \ |
0 | 1417 product(uintx, YoungPLABSize, 4096, \ |
1418 "Size of young gen promotion labs (in HeapWords)") \ | |
1419 \ | |
1420 product(uintx, OldPLABSize, 1024, \ | |
1421 "Size of old gen promotion labs (in HeapWords)") \ | |
1422 \ | |
1423 product(uintx, GCTaskTimeStampEntries, 200, \ | |
1424 "Number of time stamp entries per gc worker thread") \ | |
1425 \ | |
1426 product(bool, AlwaysTenure, false, \ | |
1427 "Always tenure objects in eden. (ParallelGC only)") \ | |
1428 \ | |
1429 product(bool, NeverTenure, false, \ | |
1064 | 1430 "Never tenure objects in eden, May tenure on overflow " \ |
1431 "(ParallelGC only)") \ | |
0 | 1432 \ |
1433 product(bool, ScavengeBeforeFullGC, true, \ | |
1064 | 1434 "Scavenge youngest generation before each full GC, " \ |
1435 "used with UseParallelGC") \ | |
0 | 1436 \ |
1437 develop(bool, ScavengeWithObjectsInToSpace, false, \ | |
1438 "Allow scavenges to occur when to_space contains objects.") \ | |
1439 \ | |
1440 product(bool, UseConcMarkSweepGC, false, \ | |
1441 "Use Concurrent Mark-Sweep GC in the old generation") \ | |
1442 \ | |
1443 product(bool, ExplicitGCInvokesConcurrent, false, \ | |
1444 "A System.gc() request invokes a concurrent collection;" \ | |
1445 " (effective only when UseConcMarkSweepGC)") \ | |
1446 \ | |
1447 product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \ | |
1064 | 1448 "A System.gc() request invokes a concurrent collection and " \ |
1449 "also unloads classes during such a concurrent gc cycle " \ | |
1450 "(effective only when UseConcMarkSweepGC)") \ | |
0 | 1451 \ |
1520
bb843ebc7c55
6919638: CMS: ExplicitGCInvokesConcurrent misinteracts with gc locker
ysr
parents:
1518
diff
changeset
|
1452 product(bool, GCLockerInvokesConcurrent, false, \ |
bb843ebc7c55
6919638: CMS: ExplicitGCInvokesConcurrent misinteracts with gc locker
ysr
parents:
1518
diff
changeset
|
1453 "The exit of a JNI CS necessitating a scavenge also" \ |
bb843ebc7c55
6919638: CMS: ExplicitGCInvokesConcurrent misinteracts with gc locker
ysr
parents:
1518
diff
changeset
|
1454 " kicks off a bkgrd concurrent collection") \ |
bb843ebc7c55
6919638: CMS: ExplicitGCInvokesConcurrent misinteracts with gc locker
ysr
parents:
1518
diff
changeset
|
1455 \ |
1991
016a3628c885
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
tonyp
parents:
1972
diff
changeset
|
1456 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
|
1457 "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
|
1458 "is active (as a percentage)") \ |
016a3628c885
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
tonyp
parents:
1972
diff
changeset
|
1459 \ |
0 | 1460 develop(bool, UseCMSAdaptiveFreeLists, true, \ |
1461 "Use Adaptive Free Lists in the CMS generation") \ | |
1462 \ | |
1463 develop(bool, UseAsyncConcMarkSweepGC, true, \ | |
1464 "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\ | |
1465 \ | |
1466 develop(bool, RotateCMSCollectionTypes, false, \ | |
1467 "Rotate the CMS collections among concurrent and STW") \ | |
1468 \ | |
1469 product(bool, UseCMSBestFit, true, \ | |
1470 "Use CMS best fit allocation strategy") \ | |
1471 \ | |
1472 product(bool, UseCMSCollectionPassing, true, \ | |
1473 "Use passing of collection from background to foreground") \ | |
1474 \ | |
1475 product(bool, UseParNewGC, false, \ | |
1476 "Use parallel threads in the new generation.") \ | |
1477 \ | |
1478 product(bool, ParallelGCVerbose, false, \ | |
1479 "Verbose output for parallel GC.") \ | |
1480 \ | |
1481 product(intx, ParallelGCBufferWastePct, 10, \ | |
1482 "wasted fraction of parallel allocation buffer.") \ | |
1483 \ | |
3357
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
ysr
parents:
3325
diff
changeset
|
1484 diagnostic(bool, ParallelGCRetainPLAB, false, \ |
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
ysr
parents:
3325
diff
changeset
|
1485 "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
|
1486 " -- 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
|
1487 " parallel card scanning under certain conditions ") \ |
0 | 1488 \ |
1489 product(intx, TargetPLABWastePct, 10, \ | |
1490 "target wasted space in last buffer as pct of overall allocation")\ | |
1491 \ | |
1492 product(uintx, PLABWeight, 75, \ | |
1493 "Percentage (0-100) used to weight the current sample when" \ | |
1494 "computing exponentially decaying average for ResizePLAB.") \ | |
1495 \ | |
1496 product(bool, ResizePLAB, true, \ | |
1497 "Dynamically resize (survivor space) promotion labs") \ | |
1498 \ | |
1499 product(bool, PrintPLAB, false, \ | |
1500 "Print (survivor space) promotion labs sizing decisions") \ | |
1501 \ | |
1502 product(intx, ParGCArrayScanChunk, 50, \ | |
1503 "Scan a subset and push remainder, if array is bigger than this") \ | |
1504 \ | |
695 | 1505 product(bool, ParGCUseLocalOverflow, false, \ |
1506 "Instead of a global overflow list, use local overflow stacks") \ | |
1507 \ | |
679
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6819891: ParNew: Fix work queue overflow code to deal correctly with +UseCompressedOops
ysr
parents:
647
diff
changeset
|
1508 product(bool, ParGCTrimOverflow, true, \ |
695 | 1509 "Eagerly trim the local overflow lists (when ParGCUseLocalOverflow") \ |
679
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6819891: ParNew: Fix work queue overflow code to deal correctly with +UseCompressedOops
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diff
changeset
|
1510 \ |
534 | 1511 notproduct(bool, ParGCWorkQueueOverflowALot, false, \ |
1512 "Whether we should simulate work queue overflow in ParNew") \ | |
1513 \ | |
1514 notproduct(uintx, ParGCWorkQueueOverflowInterval, 1000, \ | |
1064 | 1515 "An `interval' counter that determines how frequently " \ |
1516 "we simulate overflow; a smaller number increases frequency") \ | |
534 | 1517 \ |
1518 product(uintx, ParGCDesiredObjsFromOverflowList, 20, \ | |
0 | 1519 "The desired number of objects to claim from the overflow list") \ |
1520 \ | |
3357
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3325
diff
changeset
|
1521 diagnostic(intx, ParGCStridesPerThread, 2, \ |
fc2b798ab316
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1522 "The number of strides per worker thread that we divide up the " \ |
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|
1523 "card table scanning work into") \ |
fc2b798ab316
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1524 \ |
fc2b798ab316
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|
1525 diagnostic(intx, ParGCCardsPerStrideChunk, 256, \ |
fc2b798ab316
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|
1526 "The number of cards in each chunk of the parallel chunks used " \ |
fc2b798ab316
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ysr
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1527 "during card table scanning") \ |
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1528 \ |
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|
1529 product(uintx, CMSParPromoteBlocksToClaim, 16, \ |
0 | 1530 "Number of blocks to attempt to claim when refilling CMS LAB for "\ |
1531 "parallel GC.") \ | |
1532 \ | |
1145
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1533 product(uintx, OldPLABWeight, 50, \ |
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1534 "Percentage (0-100) used to weight the current sample when" \ |
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1535 "computing exponentially decaying average for resizing CMSParPromoteBlocksToClaim.") \ |
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|
1536 \ |
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|
1537 product(bool, ResizeOldPLAB, true, \ |
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|
1538 "Dynamically resize (old gen) promotion labs") \ |
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|
1539 \ |
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1540 product(bool, PrintOldPLAB, false, \ |
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|
1541 "Print (old gen) promotion labs sizing decisions") \ |
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|
1542 \ |
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1543 product(uintx, CMSOldPLABMin, 16, \ |
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1544 "Min size of CMS gen promotion lab caches per worker per blksize")\ |
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1545 \ |
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1546 product(uintx, CMSOldPLABMax, 1024, \ |
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1547 "Max size of CMS gen promotion lab caches per worker per blksize")\ |
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1548 \ |
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1549 product(uintx, CMSOldPLABNumRefills, 4, \ |
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|
1550 "Nominal number of refills of CMS gen promotion lab cache" \ |
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|
1551 " per worker per block size") \ |
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1552 \ |
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1553 product(bool, CMSOldPLABResizeQuicker, false, \ |
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1554 "Whether to react on-the-fly during a scavenge to a sudden" \ |
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1555 " change in block demand rate") \ |
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1556 \ |
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1557 product(uintx, CMSOldPLABToleranceFactor, 4, \ |
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1558 "The tolerance of the phase-change detector for on-the-fly" \ |
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1559 " PLAB resizing during a scavenge") \ |
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|
1560 \ |
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1561 product(uintx, CMSOldPLABReactivityFactor, 2, \ |
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1562 "The gain in the feedback loop for on-the-fly PLAB resizing" \ |
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1563 " during a scavenge") \ |
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1564 \ |
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1565 product(uintx, CMSOldPLABReactivityCeiling, 10, \ |
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1566 "The clamping of the gain in the feedback loop for on-the-fly" \ |
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1567 " PLAB resizing during a scavenge") \ |
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|
1568 \ |
0 | 1569 product(bool, AlwaysPreTouch, false, \ |
1570 "It forces all freshly committed pages to be pre-touched.") \ | |
1571 \ | |
2368
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1572 product_pd(intx, CMSYoungGenPerWorker, \ |
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1573 "The maximum size of young gen chosen by default per GC worker " \ |
1064 | 1574 "thread available") \ |
0 | 1575 \ |
342
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1576 product(bool, GCOverheadReporting, false, \ |
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|
1577 "Enables the GC overhead reporting facility") \ |
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|
1578 \ |
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1579 product(intx, GCOverheadReportingPeriodMS, 100, \ |
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1580 "Reporting period for conc GC overhead reporting, in ms ") \ |
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1581 \ |
0 | 1582 product(bool, CMSIncrementalMode, false, \ |
1583 "Whether CMS GC should operate in \"incremental\" mode") \ | |
1584 \ | |
1585 product(uintx, CMSIncrementalDutyCycle, 10, \ | |
1586 "CMS incremental mode duty cycle (a percentage, 0-100). If" \ | |
1587 "CMSIncrementalPacing is enabled, then this is just the initial" \ | |
1588 "value") \ | |
1589 \ | |
1590 product(bool, CMSIncrementalPacing, true, \ | |
1591 "Whether the CMS incremental mode duty cycle should be " \ | |
1592 "automatically adjusted") \ | |
1593 \ | |
1594 product(uintx, CMSIncrementalDutyCycleMin, 0, \ | |
1064 | 1595 "Lower bound on the duty cycle when CMSIncrementalPacing is " \ |
1596 "enabled (a percentage, 0-100)") \ | |
0 | 1597 \ |
1598 product(uintx, CMSIncrementalSafetyFactor, 10, \ | |
1064 | 1599 "Percentage (0-100) used to add conservatism when computing the " \ |
1600 "duty cycle") \ | |
0 | 1601 \ |
1602 product(uintx, CMSIncrementalOffset, 0, \ | |
1603 "Percentage (0-100) by which the CMS incremental mode duty cycle" \ | |
1064 | 1604 " is shifted to the right within the period between young GCs") \ |
0 | 1605 \ |
1145
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1606 product(uintx, CMSExpAvgFactor, 50, \ |
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1607 "Percentage (0-100) used to weight the current sample when" \ |
e018e6884bd8
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|
1608 "computing exponential averages for CMS statistics.") \ |
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|
1609 \ |
e018e6884bd8
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|
1610 product(uintx, CMS_FLSWeight, 75, \ |
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1611 "Percentage (0-100) used to weight the current sample when" \ |
e018e6884bd8
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1612 "computing exponentially decating averages for CMS FLS statistics.") \ |
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|
1613 \ |
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1614 product(uintx, CMS_FLSPadding, 1, \ |
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|
1615 "The multiple of deviation from mean to use for buffering" \ |
0 | 1616 "against volatility in free list demand.") \ |
1617 \ | |
1618 product(uintx, FLSCoalescePolicy, 2, \ | |
1619 "CMS: Aggression level for coalescing, increasing from 0 to 4") \ | |
1620 \ | |
1145
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1621 product(bool, FLSAlwaysCoalesceLarge, false, \ |
e018e6884bd8
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|
1622 "CMS: Larger free blocks are always available for coalescing") \ |
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|
1623 \ |
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1624 product(double, FLSLargestBlockCoalesceProximity, 0.99, \ |
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|
1625 "CMS: the smaller the percentage the greater the coalition force")\ |
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|
1626 \ |
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1627 product(double, CMSSmallCoalSurplusPercent, 1.05, \ |
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|
1628 "CMS: the factor by which to inflate estimated demand of small" \ |
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|
1629 " block sizes to prevent coalescing with an adjoining block") \ |
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|
1630 \ |
e018e6884bd8
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|
1631 product(double, CMSLargeCoalSurplusPercent, 0.95, \ |
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|
1632 "CMS: the factor by which to inflate estimated demand of large" \ |
e018e6884bd8
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|
1633 " block sizes to prevent coalescing with an adjoining block") \ |
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|
1634 \ |
e018e6884bd8
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|
1635 product(double, CMSSmallSplitSurplusPercent, 1.10, \ |
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|
1636 "CMS: the factor by which to inflate estimated demand of small" \ |
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|
1637 " block sizes to prevent splitting to supply demand for smaller" \ |
e018e6884bd8
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|
1638 " blocks") \ |
e018e6884bd8
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|
1639 \ |
e018e6884bd8
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|
1640 product(double, CMSLargeSplitSurplusPercent, 1.00, \ |
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|
1641 "CMS: the factor by which to inflate estimated demand of large" \ |
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|
1642 " block sizes to prevent splitting to supply demand for smaller" \ |
e018e6884bd8
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|
1643 " blocks") \ |
e018e6884bd8
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|
1644 \ |
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1645 product(bool, CMSExtrapolateSweep, false, \ |
e018e6884bd8
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|
1646 "CMS: cushion for block demand during sweep") \ |
e018e6884bd8
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|
1647 \ |
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|
1648 product(uintx, CMS_SweepWeight, 75, \ |
1064 | 1649 "Percentage (0-100) used to weight the current sample when " \ |
1650 "computing exponentially decaying average for inter-sweep " \ | |
1651 "duration") \ | |
0 | 1652 \ |
1145
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1653 product(uintx, CMS_SweepPadding, 1, \ |
1064 | 1654 "The multiple of deviation from mean to use for buffering " \ |
0 | 1655 "against volatility in inter-sweep duration.") \ |
1656 \ | |
1657 product(uintx, CMS_SweepTimerThresholdMillis, 10, \ | |
1658 "Skip block flux-rate sampling for an epoch unless inter-sweep " \ | |
1064 | 1659 "duration exceeds this threhold in milliseconds") \ |
0 | 1660 \ |
1661 develop(bool, CMSTraceIncrementalMode, false, \ | |
1662 "Trace CMS incremental mode") \ | |
1663 \ | |
1664 develop(bool, CMSTraceIncrementalPacing, false, \ | |
1665 "Trace CMS incremental mode pacing computation") \ | |
1666 \ | |
1667 develop(bool, CMSTraceThreadState, false, \ | |
1668 "Trace the CMS thread state (enable the trace_state() method)") \ | |
1669 \ | |
1670 product(bool, CMSClassUnloadingEnabled, false, \ | |
1671 "Whether class unloading enabled when using CMS GC") \ | |
1672 \ | |
94
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1673 product(uintx, CMSClassUnloadingMaxInterval, 0, \ |
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ysr
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diff
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|
1674 "When CMS class unloading is enabled, the maximum CMS cycle count"\ |
0834225a7916
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diff
changeset
|
1675 " for which classes may not be unloaded") \ |
0834225a7916
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diff
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|
1676 \ |
0 | 1677 product(bool, CMSCompactWhenClearAllSoftRefs, true, \ |
1678 "Compact when asked to collect CMS gen with clear_all_soft_refs") \ | |
1679 \ | |
1680 product(bool, UseCMSCompactAtFullCollection, true, \ | |
1681 "Use mark sweep compact at full collections") \ | |
1682 \ | |
1683 product(uintx, CMSFullGCsBeforeCompaction, 0, \ | |
1684 "Number of CMS full collection done before compaction if > 0") \ | |
1685 \ | |
1686 develop(intx, CMSDictionaryChoice, 0, \ | |
1687 "Use BinaryTreeDictionary as default in the CMS generation") \ | |
1688 \ | |
1689 product(uintx, CMSIndexedFreeListReplenish, 4, \ | |
1777
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1690 "Replenish an indexed free list with this number of chunks") \ |
0 | 1691 \ |
1145
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1692 product(bool, CMSReplenishIntermediate, true, \ |
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1693 "Replenish all intermediate free-list caches") \ |
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1694 \ |
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1695 product(bool, CMSSplitIndexedFreeListBlocks, true, \ |
1777
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diff
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|
1696 "When satisfying batched demand, split blocks from the " \ |
1145
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1697 "IndexedFreeList whose size is a multiple of requested size") \ |
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|
1698 \ |
0 | 1699 product(bool, CMSLoopWarn, false, \ |
1700 "Warn in case of excessive CMS looping") \ | |
1701 \ | |
1702 develop(bool, CMSOverflowEarlyRestoration, false, \ | |
1703 "Whether preserved marks should be restored early") \ | |
1704 \ | |
1284 | 1705 product(uintx, MarkStackSize, NOT_LP64(32*K) LP64_ONLY(4*M), \ |
1706 "Size of marking stack") \ | |
1707 \ | |
1708 product(uintx, MarkStackSizeMax, NOT_LP64(4*M) LP64_ONLY(512*M), \ | |
1709 "Max size of marking stack") \ | |
0 | 1710 \ |
1711 notproduct(bool, CMSMarkStackOverflowALot, false, \ | |
1712 "Whether we should simulate frequent marking stack / work queue" \ | |
1713 " overflow") \ | |
1714 \ | |
534 | 1715 notproduct(uintx, CMSMarkStackOverflowInterval, 1000, \ |
1716 "An `interval' counter that determines how frequently" \ | |
0 | 1717 " we simulate overflow; a smaller number increases frequency") \ |
1718 \ | |
1719 product(uintx, CMSMaxAbortablePrecleanLoops, 0, \ | |
1720 "(Temporary, subject to experimentation)" \ | |
1721 "Maximum number of abortable preclean iterations, if > 0") \ | |
1722 \ | |
1723 product(intx, CMSMaxAbortablePrecleanTime, 5000, \ | |
1724 "(Temporary, subject to experimentation)" \ | |
1725 "Maximum time in abortable preclean in ms") \ | |
1726 \ | |
1727 product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \ | |
1728 "(Temporary, subject to experimentation)" \ | |
1729 "Nominal minimum work per abortable preclean iteration") \ | |
1730 \ | |
1887
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diff
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1731 manageable(intx, CMSAbortablePrecleanWaitMillis, 100, \ |
0 | 1732 "(Temporary, subject to experimentation)" \ |
1733 " Time that we sleep between iterations when not given" \ | |
1734 " enough work per iteration") \ | |
1735 \ | |
1736 product(uintx, CMSRescanMultiple, 32, \ | |
1737 "Size (in cards) of CMS parallel rescan task") \ | |
1738 \ | |
1739 product(uintx, CMSConcMarkMultiple, 32, \ | |
1740 "Size (in cards) of CMS concurrent MT marking task") \ | |
1741 \ | |
1742 product(uintx, CMSRevisitStackSize, 1*M, \ | |
1743 "Size of CMS KlassKlass revisit stack") \ | |
1744 \ | |
1745 product(bool, CMSAbortSemantics, false, \ | |
1746 "Whether abort-on-overflow semantics is implemented") \ | |
1747 \ | |
1748 product(bool, CMSParallelRemarkEnabled, true, \ | |
1749 "Whether parallel remark enabled (only if ParNewGC)") \ | |
1750 \ | |
1751 product(bool, CMSParallelSurvivorRemarkEnabled, true, \ | |
1752 "Whether parallel remark of survivor space" \ | |
1753 " enabled (effective only if CMSParallelRemarkEnabled)") \ | |
1754 \ | |
1755 product(bool, CMSPLABRecordAlways, true, \ | |
1756 "Whether to always record survivor space PLAB bdries" \ | |
1757 " (effective only if CMSParallelSurvivorRemarkEnabled)") \ | |
1758 \ | |
1759 product(bool, CMSConcurrentMTEnabled, true, \ | |
1760 "Whether multi-threaded concurrent work enabled (if ParNewGC)") \ | |
1761 \ | |
1762 product(bool, CMSPermGenPrecleaningEnabled, true, \ | |
1763 "Whether concurrent precleaning enabled in perm gen" \ | |
1764 " (effective only when CMSPrecleaningEnabled is true)") \ | |
1765 \ | |
1766 product(bool, CMSPrecleaningEnabled, true, \ | |
1767 "Whether concurrent precleaning enabled") \ | |
1768 \ | |
1769 product(uintx, CMSPrecleanIter, 3, \ | |
1770 "Maximum number of precleaning iteration passes") \ | |
1771 \ | |
1772 product(uintx, CMSPrecleanNumerator, 2, \ | |
1773 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ | |
1774 " ratio") \ | |
1775 \ | |
1776 product(uintx, CMSPrecleanDenominator, 3, \ | |
1777 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ | |
1778 " ratio") \ | |
1779 \ | |
452
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1780 product(bool, CMSPrecleanRefLists1, true, \ |
0 | 1781 "Preclean ref lists during (initial) preclean phase") \ |
1782 \ | |
1783 product(bool, CMSPrecleanRefLists2, false, \ | |
1784 "Preclean ref lists during abortable preclean phase") \ | |
1785 \ | |
1786 product(bool, CMSPrecleanSurvivors1, false, \ | |
1787 "Preclean survivors during (initial) preclean phase") \ | |
1788 \ | |
1789 product(bool, CMSPrecleanSurvivors2, true, \ | |
1790 "Preclean survivors during abortable preclean phase") \ | |
1791 \ | |
1792 product(uintx, CMSPrecleanThreshold, 1000, \ | |
1793 "Don't re-iterate if #dirty cards less than this") \ | |
1794 \ | |
1795 product(bool, CMSCleanOnEnter, true, \ | |
1796 "Clean-on-enter optimization for reducing number of dirty cards") \ | |
1797 \ | |
1798 product(uintx, CMSRemarkVerifyVariant, 1, \ | |
1799 "Choose variant (1,2) of verification following remark") \ | |
1800 \ | |
1801 product(uintx, CMSScheduleRemarkEdenSizeThreshold, 2*M, \ | |
1802 "If Eden used is below this value, don't try to schedule remark") \ | |
1803 \ | |
1804 product(uintx, CMSScheduleRemarkEdenPenetration, 50, \ | |
1805 "The Eden occupancy % at which to try and schedule remark pause") \ | |
1806 \ | |
1807 product(uintx, CMSScheduleRemarkSamplingRatio, 5, \ | |
1808 "Start sampling Eden top at least before yg occupancy reaches" \ | |
1809 " 1/<ratio> of the size at which we plan to schedule remark") \ | |
1810 \ | |
1811 product(uintx, CMSSamplingGrain, 16*K, \ | |
1812 "The minimum distance between eden samples for CMS (see above)") \ | |
1813 \ | |
1814 product(bool, CMSScavengeBeforeRemark, false, \ | |
1815 "Attempt scavenge before the CMS remark step") \ | |
1816 \ | |
1817 develop(bool, CMSTraceSweeper, false, \ | |
1818 "Trace some actions of the CMS sweeper") \ | |
1819 \ | |
1820 product(uintx, CMSWorkQueueDrainThreshold, 10, \ | |
1821 "Don't drain below this size per parallel worker/thief") \ | |
1822 \ | |
1887
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1823 manageable(intx, CMSWaitDuration, 2000, \ |
0 | 1824 "Time in milliseconds that CMS thread waits for young GC") \ |
1825 \ | |
1826 product(bool, CMSYield, true, \ | |
1827 "Yield between steps of concurrent mark & sweep") \ | |
1828 \ | |
1829 product(uintx, CMSBitMapYieldQuantum, 10*M, \ | |
1830 "Bitmap operations should process at most this many bits" \ | |
1831 "between yields") \ | |
1832 \ | |
1145
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1833 product(bool, CMSDumpAtPromotionFailure, false, \ |
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1834 "Dump useful information about the state of the CMS old " \ |
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|
1835 " generation upon a promotion failure.") \ |
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|
1836 \ |
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1837 product(bool, CMSPrintChunksInDump, false, \ |
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|
1838 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ |
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1839 " more detailed information about the free chunks.") \ |
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|
1840 \ |
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1841 product(bool, CMSPrintObjectsInDump, false, \ |
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1842 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ |
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1843 " more detailed information about the allocated objects.") \ |
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|
1844 \ |
0 | 1845 diagnostic(bool, FLSVerifyAllHeapReferences, false, \ |
1846 "Verify that all refs across the FLS boundary " \ | |
1847 " are to valid objects") \ | |
1848 \ | |
1849 diagnostic(bool, FLSVerifyLists, false, \ | |
1850 "Do lots of (expensive) FreeListSpace verification") \ | |
1851 \ | |
1852 diagnostic(bool, FLSVerifyIndexTable, false, \ | |
1853 "Do lots of (expensive) FLS index table verification") \ | |
1854 \ | |
1855 develop(bool, FLSVerifyDictionary, false, \ | |
1856 "Do lots of (expensive) FLS dictionary verification") \ | |
1857 \ | |
1858 develop(bool, VerifyBlockOffsetArray, false, \ | |
1859 "Do (expensive!) block offset array verification") \ | |
1860 \ | |
3321
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1861 diagnostic(bool, BlockOffsetArrayUseUnallocatedBlock, false, \ |
0 | 1862 "Maintain _unallocated_block in BlockOffsetArray" \ |
1863 " (currently applicable only to CMS collector)") \ | |
1864 \ | |
1865 develop(bool, TraceCMSState, false, \ | |
1866 "Trace the state of the CMS collection") \ | |
1867 \ | |
1868 product(intx, RefDiscoveryPolicy, 0, \ | |
1869 "Whether reference-based(0) or referent-based(1)") \ | |
1870 \ | |
1871 product(bool, ParallelRefProcEnabled, false, \ | |
1872 "Enable parallel reference processing whenever possible") \ | |
1873 \ | |
1874 product(bool, ParallelRefProcBalancingEnabled, true, \ | |
1875 "Enable balancing of reference processing queues") \ | |
1876 \ | |
1877 product(intx, CMSTriggerRatio, 80, \ | |
1878 "Percentage of MinHeapFreeRatio in CMS generation that is " \ | |
1064 | 1879 "allocated before a CMS collection cycle commences") \ |
0 | 1880 \ |
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1881 product(intx, CMSTriggerPermRatio, 80, \ |
1064 | 1882 "Percentage of MinHeapFreeRatio in the CMS perm generation that " \ |
1883 "is allocated before a CMS collection cycle commences, that " \ | |
1884 "also collects the perm generation") \ | |
94
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1885 \ |
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1886 product(uintx, CMSBootstrapOccupancy, 50, \ |
0 | 1887 "Percentage CMS generation occupancy at which to " \ |
1064 | 1888 "initiate CMS collection for bootstrapping collection stats") \ |
0 | 1889 \ |
1890 product(intx, CMSInitiatingOccupancyFraction, -1, \ | |
1891 "Percentage CMS generation occupancy to start a CMS collection " \ | |
1064 | 1892 "cycle. A negative value means that CMSTriggerRatio is used") \ |
94
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1893 \ |
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1894 product(uintx, InitiatingHeapOccupancyPercent, 45, \ |
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1895 "Percentage of the (entire) heap occupancy to start a " \ |
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1896 "concurrent GC cycle. It us used by GCs that trigger a " \ |
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1897 "concurrent GC cycle based on the occupancy of the entire heap, " \ |
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1898 "not just one of the generations (e.g., G1). A value of 0 " \ |
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1899 "denotes 'do constant GC cycles'.") \ |
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|
1900 \ |
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1901 product(intx, CMSInitiatingPermOccupancyFraction, -1, \ |
1064 | 1902 "Percentage CMS perm generation occupancy to start a " \ |
1903 "CMScollection cycle. A negative value means that " \ | |
1904 "CMSTriggerPermRatio is used") \ | |
0 | 1905 \ |
1906 product(bool, UseCMSInitiatingOccupancyOnly, false, \ | |
1907 "Only use occupancy as a crierion for starting a CMS collection") \ | |
1908 \ | |
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1909 product(intx, CMSIsTooFullPercentage, 98, \ |
1064 | 1910 "An absolute ceiling above which CMS will always consider the " \ |
1911 "perm gen ripe for collection") \ | |
94
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1912 \ |
0 | 1913 develop(bool, CMSTestInFreeList, false, \ |
1914 "Check if the coalesced range is already in the " \ | |
1064 | 1915 "free lists as claimed") \ |
0 | 1916 \ |
1917 notproduct(bool, CMSVerifyReturnedBytes, false, \ | |
1918 "Check that all the garbage collected was returned to the " \ | |
1919 "free lists.") \ | |
1920 \ | |
1921 notproduct(bool, ScavengeALot, false, \ | |
1922 "Force scavenge at every Nth exit from the runtime system " \ | |
1923 "(N=ScavengeALotInterval)") \ | |
1924 \ | |
1925 develop(bool, FullGCALot, false, \ | |
1926 "Force full gc at every Nth exit from the runtime system " \ | |
1927 "(N=FullGCALotInterval)") \ | |
1928 \ | |
1929 notproduct(bool, GCALotAtAllSafepoints, false, \ | |
1930 "Enforce ScavengeALot/GCALot at all potential safepoints") \ | |
1931 \ | |
1145
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1932 product(bool, PrintPromotionFailure, false, \ |
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1933 "Print additional diagnostic information following " \ |
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1934 " promotion failure") \ |
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1935 \ |
0 | 1936 notproduct(bool, PromotionFailureALot, false, \ |
1937 "Use promotion failure handling on every youngest generation " \ | |
1938 "collection") \ | |
1939 \ | |
1940 develop(uintx, PromotionFailureALotCount, 1000, \ | |
1941 "Number of promotion failures occurring at ParGCAllocBuffer" \ | |
1942 "refill attempts (ParNew) or promotion attempts " \ | |
1943 "(other young collectors) ") \ | |
1944 \ | |
1945 develop(uintx, PromotionFailureALotInterval, 5, \ | |
1946 "Total collections between promotion failures alot") \ | |
1947 \ | |
1837
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1948 experimental(intx, WorkStealingSleepMillis, 1, \ |
0 | 1949 "Sleep time when sleep is used for yields") \ |
1950 \ | |
2430 | 1951 experimental(uintx, WorkStealingYieldsBeforeSleep, 5000, \ |
0 | 1952 "Number of yields before a sleep is done during workstealing") \ |
1953 \ | |
1837
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1954 experimental(uintx, WorkStealingHardSpins, 4096, \ |
546
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1955 "Number of iterations in a spin loop between checks on " \ |
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|
1956 "time out of hard spin") \ |
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|
1957 \ |
1837
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1958 experimental(uintx, WorkStealingSpinToYieldRatio, 10, \ |
546
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1959 "Ratio of hard spins to calls to yield") \ |
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|
1960 \ |
534 | 1961 product(uintx, PreserveMarkStackSize, 1024, \ |
1064 | 1962 "Size for stack used in promotion failure handling") \ |
0 | 1963 \ |
1311
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1964 develop(uintx, ObjArrayMarkingStride, 512, \ |
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1965 "Number of ObjArray elements to push onto the marking stack" \ |
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|
1966 "before pushing a continuation entry") \ |
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|
1967 \ |
3779 | 1968 notproduct(bool, ExecuteInternalVMTests, false, \ |
1969 "Enable execution of internal VM tests.") \ | |
1970 \ | |
0 | 1971 product_pd(bool, UseTLAB, "Use thread-local object allocation") \ |
1972 \ | |
1973 product_pd(bool, ResizeTLAB, \ | |
1974 "Dynamically resize tlab size for threads") \ | |
1975 \ | |
1976 product(bool, ZeroTLAB, false, \ | |
1977 "Zero out the newly created TLAB") \ | |
1978 \ | |
342
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1979 product(bool, FastTLABRefill, true, \ |
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1980 "Use fast TLAB refill code") \ |
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1981 \ |
0 | 1982 product(bool, PrintTLAB, false, \ |
1983 "Print various TLAB related information") \ | |
1984 \ | |
1985 product(bool, TLABStats, true, \ | |
1986 "Print various TLAB related information") \ | |
1987 \ | |
3892 | 1988 product(bool, UseBlockZeroing, false, \ |
1989 "Use special cpu instructions for block zeroing") \ | |
1990 \ | |
1991 product(intx, BlockZeroingLowLimit, 2048, \ | |
1992 "Minimum size in bytes when block zeroing will be used") \ | |
1993 \ | |
3903 | 1994 product(bool, UseBlockCopy, false, \ |
1995 "Use special cpu instructions for block copy") \ | |
1996 \ | |
1997 product(intx, BlockCopyLowLimit, 2048, \ | |
1998 "Minimum size in bytes when block copy will be used") \ | |
1999 \ | |
941 | 2000 product(bool, PrintRevisitStats, false, \ |
2001 "Print revisit (klass and MDO) stack related information") \ | |
2002 \ | |
2192
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2003 EMBEDDED_ONLY(product(bool, LowMemoryProtection, true, \ |
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2004 "Enable LowMemoryProtection")) \ |
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2005 \ |
0 | 2006 product_pd(bool, NeverActAsServerClassMachine, \ |
2007 "Never act like a server-class machine") \ | |
2008 \ | |
2009 product(bool, AlwaysActAsServerClassMachine, false, \ | |
2010 "Always act like a server-class machine") \ | |
2011 \ | |
1064 | 2012 product_pd(uint64_t, MaxRAM, \ |
2013 "Real memory size (in bytes) used to set maximum heap size") \ | |
2014 \ | |
2015 product(uintx, ErgoHeapSizeLimit, 0, \ | |
2016 "Maximum ergonomically set heap size (in bytes); zero means use " \ | |
2017 "MaxRAM / MaxRAMFraction") \ | |
2018 \ | |
2019 product(uintx, MaxRAMFraction, 4, \ | |
2020 "Maximum fraction (1/n) of real memory used for maximum heap " \ | |
2021 "size") \ | |
0 | 2022 \ |
2023 product(uintx, DefaultMaxRAMFraction, 4, \ | |
1064 | 2024 "Maximum fraction (1/n) of real memory used for maximum heap " \ |
2025 "size; deprecated: to be renamed to MaxRAMFraction") \ | |
2026 \ | |
2027 product(uintx, MinRAMFraction, 2, \ | |
2028 "Minimum fraction (1/n) of real memory used for maxmimum heap " \ | |
2029 "size on systems with small physical memory size") \ | |
2030 \ | |
2031 product(uintx, InitialRAMFraction, 64, \ | |
2032 "Fraction (1/n) of real memory used for initial heap size") \ | |
0 | 2033 \ |
2034 product(bool, UseAutoGCSelectPolicy, false, \ | |
2035 "Use automatic collection selection policy") \ | |
2036 \ | |
2037 product(uintx, AutoGCSelectPauseMillis, 5000, \ | |
2038 "Automatic GC selection pause threshhold in ms") \ | |
2039 \ | |
2040 product(bool, UseAdaptiveSizePolicy, true, \ | |
2041 "Use adaptive generation sizing policies") \ | |
2042 \ | |
2043 product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \ | |
2044 "Use adaptive survivor sizing policies") \ | |
2045 \ | |
2046 product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \ | |
2047 "Use adaptive young-old sizing policies at minor collections") \ | |
2048 \ | |
2049 product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \ | |
2050 "Use adaptive young-old sizing policies at major collections") \ | |
2051 \ | |
2052 product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \ | |
2053 "Use statistics from System.GC for adaptive size policy") \ | |
2054 \ | |
2055 product(bool, UseAdaptiveGCBoundary, false, \ | |
2056 "Allow young-old boundary to move") \ | |
2057 \ | |
2058 develop(bool, TraceAdaptiveGCBoundary, false, \ | |
2059 "Trace young-old boundary moves") \ | |
2060 \ | |
2061 develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \ | |
2062 "Resize the virtual spaces of the young or old generations") \ | |
2063 \ | |
2064 product(uintx, AdaptiveSizeThroughPutPolicy, 0, \ | |
2065 "Policy for changeing generation size for throughput goals") \ | |
2066 \ | |
2067 product(uintx, AdaptiveSizePausePolicy, 0, \ | |
2068 "Policy for changing generation size for pause goals") \ | |
2069 \ | |
2070 develop(bool, PSAdjustTenuredGenForMinorPause, false, \ | |
2071 "Adjust tenured generation to achive a minor pause goal") \ | |
2072 \ | |
2073 develop(bool, PSAdjustYoungGenForMajorPause, false, \ | |
2074 "Adjust young generation to achive a major pause goal") \ | |
2075 \ | |
2076 product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \ | |
2077 "Number of steps where heuristics is used before data is used") \ | |
2078 \ | |
2079 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \ | |
2080 "Number of collections before the adaptive sizing is started") \ | |
2081 \ | |
2082 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \ | |
1064 | 2083 "Collecton interval for printing information; zero => never") \ |
0 | 2084 \ |
2085 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \ | |
2086 "Use adaptive minimum footprint as a goal") \ | |
2087 \ | |
2088 product(uintx, AdaptiveSizePolicyWeight, 10, \ | |
2089 "Weight given to exponential resizing, between 0 and 100") \ | |
2090 \ | |
2091 product(uintx, AdaptiveTimeWeight, 25, \ | |
2092 "Weight given to time in adaptive policy, between 0 and 100") \ | |
2093 \ | |
2094 product(uintx, PausePadding, 1, \ | |
2095 "How much buffer to keep for pause time") \ | |
2096 \ | |
2097 product(uintx, PromotedPadding, 3, \ | |
2098 "How much buffer to keep for promotion failure") \ | |
2099 \ | |
2100 product(uintx, SurvivorPadding, 3, \ | |
2101 "How much buffer to keep for survivor overflow") \ | |
2102 \ | |
2103 product(uintx, AdaptivePermSizeWeight, 20, \ | |
2104 "Weight for perm gen exponential resizing, between 0 and 100") \ | |
2105 \ | |
2106 product(uintx, PermGenPadding, 3, \ | |
2107 "How much buffer to keep for perm gen sizing") \ | |
2108 \ | |
2109 product(uintx, ThresholdTolerance, 10, \ | |
2110 "Allowed collection cost difference between generations") \ | |
2111 \ | |
2112 product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \ | |
1064 | 2113 "If collection costs are within margin, reduce both by full " \ |
2114 "delta") \ | |
0 | 2115 \ |
2116 product(uintx, YoungGenerationSizeIncrement, 20, \ | |
2117 "Adaptive size percentage change in young generation") \ | |
2118 \ | |
2119 product(uintx, YoungGenerationSizeSupplement, 80, \ | |
2120 "Supplement to YoungedGenerationSizeIncrement used at startup") \ | |
2121 \ | |
2122 product(uintx, YoungGenerationSizeSupplementDecay, 8, \ | |
2123 "Decay factor to YoungedGenerationSizeSupplement") \ | |
2124 \ | |
2125 product(uintx, TenuredGenerationSizeIncrement, 20, \ | |
2126 "Adaptive size percentage change in tenured generation") \ | |
2127 \ | |
2128 product(uintx, TenuredGenerationSizeSupplement, 80, \ | |
2129 "Supplement to TenuredGenerationSizeIncrement used at startup") \ | |
2130 \ | |
2131 product(uintx, TenuredGenerationSizeSupplementDecay, 2, \ | |
2132 "Decay factor to TenuredGenerationSizeIncrement") \ | |
2133 \ | |
1783 | 2134 product(uintx, MaxGCPauseMillis, max_uintx, \ |
751 | 2135 "Adaptive size policy maximum GC pause time goal in msec, " \ |
2136 "or (G1 Only) the max. GC time per MMU time slice") \ | |
2137 \ | |
1610
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1589
diff
changeset
|
2138 product(uintx, GCPauseIntervalMillis, 0, \ |
751 | 2139 "Time slice for MMU specification") \ |
0 | 2140 \ |
2141 product(uintx, MaxGCMinorPauseMillis, max_uintx, \ | |
2142 "Adaptive size policy maximum GC minor pause time goal in msec") \ | |
2143 \ | |
2144 product(uintx, GCTimeRatio, 99, \ | |
2145 "Adaptive size policy application time to GC time ratio") \ | |
2146 \ | |
2147 product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \ | |
2148 "Adaptive size scale down factor for shrinking") \ | |
2149 \ | |
2150 product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \ | |
2151 "Adaptive size decays the major cost for long major intervals") \ | |
2152 \ | |
2153 product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \ | |
2154 "Time scale over which major costs decay") \ | |
2155 \ | |
2156 product(uintx, MinSurvivorRatio, 3, \ | |
2157 "Minimum ratio of young generation/survivor space size") \ | |
2158 \ | |
2159 product(uintx, InitialSurvivorRatio, 8, \ | |
2160 "Initial ratio of eden/survivor space size") \ | |
2161 \ | |
2162 product(uintx, BaseFootPrintEstimate, 256*M, \ | |
2163 "Estimate of footprint other than Java Heap") \ | |
2164 \ | |
2165 product(bool, UseGCOverheadLimit, true, \ | |
2166 "Use policy to limit of proportion of time spent in GC " \ | |
2167 "before an OutOfMemory error is thrown") \ | |
2168 \ | |
2169 product(uintx, GCTimeLimit, 98, \ | |
2170 "Limit of proportion of time spent in GC before an OutOfMemory" \ | |
2171 "error is thrown (used with GCHeapFreeLimit)") \ | |
2172 \ | |
2173 product(uintx, GCHeapFreeLimit, 2, \ | |
2174 "Minimum percentage of free space after a full GC before an " \ | |
2175 "OutOfMemoryError is thrown (used with GCTimeLimit)") \ | |
2176 \ | |
2177 develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \ | |
2178 "Number of consecutive collections before gc time limit fires") \ | |
2179 \ | |
2180 product(bool, PrintAdaptiveSizePolicy, false, \ | |
2181 "Print information about AdaptiveSizePolicy") \ | |
2182 \ | |
2183 product(intx, PrefetchCopyIntervalInBytes, -1, \ | |
2184 "How far ahead to prefetch destination area (<= 0 means off)") \ | |
2185 \ | |
2186 product(intx, PrefetchScanIntervalInBytes, -1, \ | |
2187 "How far ahead to prefetch scan area (<= 0 means off)") \ | |
2188 \ | |
2189 product(intx, PrefetchFieldsAhead, -1, \ | |
2190 "How many fields ahead to prefetch in oop scan (<= 0 means off)") \ | |
2191 \ | |
2192 develop(bool, UsePrefetchQueue, true, \ | |
2193 "Use the prefetch queue during PS promotion") \ | |
2194 \ | |
2195 diagnostic(bool, VerifyBeforeExit, trueInDebug, \ | |
2196 "Verify system before exiting") \ | |
2197 \ | |
2198 diagnostic(bool, VerifyBeforeGC, false, \ | |
2199 "Verify memory system before GC") \ | |
2200 \ | |
2201 diagnostic(bool, VerifyAfterGC, false, \ | |
2202 "Verify memory system after GC") \ | |
2203 \ | |
2204 diagnostic(bool, VerifyDuringGC, false, \ | |
2205 "Verify memory system during GC (between phases)") \ | |
2206 \ | |
390 | 2207 diagnostic(bool, GCParallelVerificationEnabled, true, \ |
2208 "Enable parallel memory system verification") \ | |
2209 \ | |
1166 | 2210 diagnostic(bool, DeferInitialCardMark, false, \ |
2211 "When +ReduceInitialCardMarks, explicitly defer any that " \ | |
2212 "may arise from new_pre_store_barrier") \ | |
2213 \ | |
0 | 2214 diagnostic(bool, VerifyRememberedSets, false, \ |
2215 "Verify GC remembered sets") \ | |
2216 \ | |
2217 diagnostic(bool, VerifyObjectStartArray, true, \ | |
2218 "Verify GC object start array if verify before/after") \ | |
2219 \ | |
2220 product(bool, DisableExplicitGC, false, \ | |
2221 "Tells whether calling System.gc() does a full GC") \ | |
2222 \ | |
2223 notproduct(bool, CheckMemoryInitialization, false, \ | |
2224 "Checks memory initialization") \ | |
2225 \ | |
2226 product(bool, CollectGen0First, false, \ | |
2227 "Collect youngest generation before each full GC") \ | |
2228 \ | |
2229 diagnostic(bool, BindCMSThreadToCPU, false, \ | |
2230 "Bind CMS Thread to CPU if possible") \ | |
2231 \ | |
2232 diagnostic(uintx, CPUForCMSThread, 0, \ | |
2233 "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \ | |
2234 \ | |
2235 product(bool, BindGCTaskThreadsToCPUs, false, \ | |
2236 "Bind GCTaskThreads to CPUs if possible") \ | |
2237 \ | |
2238 product(bool, UseGCTaskAffinity, false, \ | |
2239 "Use worker affinity when asking for GCTasks") \ | |
2240 \ | |
2241 product(uintx, ProcessDistributionStride, 4, \ | |
2242 "Stride through processors when distributing processes") \ | |
2243 \ | |
2244 product(uintx, CMSCoordinatorYieldSleepCount, 10, \ | |
2245 "number of times the coordinator GC thread will sleep while " \ | |
2246 "yielding before giving up and resuming GC") \ | |
2247 \ | |
2248 product(uintx, CMSYieldSleepCount, 0, \ | |
2249 "number of times a GC thread (minus the coordinator) " \ | |
2250 "will sleep while yielding before giving up and resuming GC") \ | |
2251 \ | |
2252 /* gc tracing */ \ | |
2253 manageable(bool, PrintGC, false, \ | |
2254 "Print message at garbage collect") \ | |
2255 \ | |
2256 manageable(bool, PrintGCDetails, false, \ | |
2257 "Print more details at garbage collect") \ | |
2258 \ | |
2259 manageable(bool, PrintGCDateStamps, false, \ | |
2260 "Print date stamps at garbage collect") \ | |
2261 \ | |
2262 manageable(bool, PrintGCTimeStamps, false, \ | |
2263 "Print timestamps at garbage collect") \ | |
2264 \ | |
2265 product(bool, PrintGCTaskTimeStamps, false, \ | |
2266 "Print timestamps for individual gc worker thread tasks") \ | |
2267 \ | |
2268 develop(intx, ConcGCYieldTimeout, 0, \ | |
2269 "If non-zero, assert that GC threads yield within this # of ms.") \ | |
2270 \ | |
2271 notproduct(bool, TraceMarkSweep, false, \ | |
2272 "Trace mark sweep") \ | |
2273 \ | |
2274 product(bool, PrintReferenceGC, false, \ | |
2275 "Print times spent handling reference objects during GC " \ | |
2276 " (enabled only when PrintGCDetails)") \ | |
2277 \ | |
2278 develop(bool, TraceReferenceGC, false, \ | |
2279 "Trace handling of soft/weak/final/phantom references") \ | |
2280 \ | |
2281 develop(bool, TraceFinalizerRegistration, false, \ | |
2282 "Trace registration of final references") \ | |
2283 \ | |
2284 notproduct(bool, TraceScavenge, false, \ | |
2285 "Trace scavenge") \ | |
2286 \ | |
2287 product_rw(bool, TraceClassLoading, false, \ | |
2288 "Trace all classes loaded") \ | |
2289 \ | |
2290 product(bool, TraceClassLoadingPreorder, false, \ | |
2291 "Trace all classes loaded in order referenced (not loaded)") \ | |
2292 \ | |
2293 product_rw(bool, TraceClassUnloading, false, \ | |
2294 "Trace unloading of classes") \ | |
2295 \ | |
2296 product_rw(bool, TraceLoaderConstraints, false, \ | |
2297 "Trace loader constraints") \ | |
2298 \ | |
2299 product(bool, TraceGen0Time, false, \ | |
2300 "Trace accumulated time for Gen 0 collection") \ | |
2301 \ | |
2302 product(bool, TraceGen1Time, false, \ | |
2303 "Trace accumulated time for Gen 1 collection") \ | |
2304 \ | |
2305 product(bool, PrintTenuringDistribution, false, \ | |
2306 "Print tenuring age information") \ | |
2307 \ | |
2308 product_rw(bool, PrintHeapAtGC, false, \ | |
2309 "Print heap layout before and after each GC") \ | |
2310 \ | |
838
0316eac49d5a
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
779
diff
changeset
|
2311 product_rw(bool, PrintHeapAtGCExtended, false, \ |
0316eac49d5a
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
779
diff
changeset
|
2312 "Prints extended information about the layout of the heap " \ |
0316eac49d5a
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
779
diff
changeset
|
2313 "when -XX:+PrintHeapAtGC is set") \ |
0316eac49d5a
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
779
diff
changeset
|
2314 \ |
0 | 2315 product(bool, PrintHeapAtSIGBREAK, true, \ |
2316 "Print heap layout in response to SIGBREAK") \ | |
2317 \ | |
615
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
2318 manageable(bool, PrintClassHistogramBeforeFullGC, false, \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
2319 "Print a class histogram before any major stop-world GC") \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
2320 \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
2321 manageable(bool, PrintClassHistogramAfterFullGC, false, \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
2322 "Print a class histogram after any major stop-world GC") \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
2323 \ |
0 | 2324 manageable(bool, PrintClassHistogram, false, \ |
2325 "Print a histogram of class instances") \ | |
2326 \ | |
2327 develop(bool, TraceWorkGang, false, \ | |
2328 "Trace activities of work gangs") \ | |
2329 \ | |
2330 product(bool, TraceParallelOldGCTasks, false, \ | |
2331 "Trace multithreaded GC activity") \ | |
2332 \ | |
2333 develop(bool, TraceBlockOffsetTable, false, \ | |
2334 "Print BlockOffsetTable maps") \ | |
2335 \ | |
2336 develop(bool, TraceCardTableModRefBS, false, \ | |
2337 "Print CardTableModRefBS maps") \ | |
2338 \ | |
2339 develop(bool, TraceGCTaskManager, false, \ | |
2340 "Trace actions of the GC task manager") \ | |
2341 \ | |
2342 develop(bool, TraceGCTaskQueue, false, \ | |
2343 "Trace actions of the GC task queues") \ | |
2344 \ | |
2345 develop(bool, TraceGCTaskThread, false, \ | |
2346 "Trace actions of the GC task threads") \ | |
2347 \ | |
2348 product(bool, PrintParallelOldGCPhaseTimes, false, \ | |
2349 "Print the time taken by each parallel old gc phase." \ | |
2350 "PrintGCDetails must also be enabled.") \ | |
2351 \ | |
2352 develop(bool, TraceParallelOldGCMarkingPhase, false, \ | |
2353 "Trace parallel old gc marking phase") \ | |
2354 \ | |
2355 develop(bool, TraceParallelOldGCSummaryPhase, false, \ | |
2356 "Trace parallel old gc summary phase") \ | |
2357 \ | |
2358 develop(bool, TraceParallelOldGCCompactionPhase, false, \ | |
2359 "Trace parallel old gc compaction phase") \ | |
2360 \ | |
2361 develop(bool, TraceParallelOldGCDensePrefix, false, \ | |
2362 "Trace parallel old gc dense prefix computation") \ | |
2363 \ | |
2364 develop(bool, IgnoreLibthreadGPFault, false, \ | |
2365 "Suppress workaround for libthread GP fault") \ | |
2366 \ | |
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
|
2367 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
|
2368 "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
|
2369 "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
|
2370 \ |
3767
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3745
diff
changeset
|
2371 /* GC log rotation setting */ \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3745
diff
changeset
|
2372 \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3745
diff
changeset
|
2373 product(bool, UseGCLogFileRotation, false, \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3745
diff
changeset
|
2374 "Prevent large gclog file for long running app. " \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3745
diff
changeset
|
2375 "Requires -Xloggc:<filename>") \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3745
diff
changeset
|
2376 \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3745
diff
changeset
|
2377 product(uintx, NumberOfGCLogFiles, 0, \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3745
diff
changeset
|
2378 "Number of gclog files in rotation, " \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3745
diff
changeset
|
2379 "Default: 0, no rotation") \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3745
diff
changeset
|
2380 \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3745
diff
changeset
|
2381 product(uintx, GCLogFileSize, 0, \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3745
diff
changeset
|
2382 "GC log file size, Default: 0 bytes, no rotation " \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3745
diff
changeset
|
2383 "Only valid with UseGCLogFileRotation") \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3745
diff
changeset
|
2384 \ |
0 | 2385 /* JVMTI heap profiling */ \ |
2386 \ | |
2387 diagnostic(bool, TraceJVMTIObjectTagging, false, \ | |
2388 "Trace JVMTI object tagging calls") \ | |
2389 \ | |
2390 diagnostic(bool, VerifyBeforeIteration, false, \ | |
2391 "Verify memory system before JVMTI iteration") \ | |
2392 \ | |
2393 /* compiler interface */ \ | |
2394 \ | |
2395 develop(bool, CIPrintCompilerName, false, \ | |
2396 "when CIPrint is active, print the name of the active compiler") \ | |
2397 \ | |
2398 develop(bool, CIPrintCompileQueue, false, \ | |
2399 "display the contents of the compile queue whenever a " \ | |
2400 "compilation is enqueued") \ | |
2401 \ | |
2402 develop(bool, CIPrintRequests, false, \ | |
2403 "display every request for compilation") \ | |
2404 \ | |
2405 product(bool, CITime, false, \ | |
2406 "collect timing information for compilation") \ | |
2407 \ | |
2408 develop(bool, CITimeEach, false, \ | |
2409 "display timing information after each successful compilation") \ | |
2410 \ | |
2411 develop(bool, CICountOSR, true, \ | |
2412 "use a separate counter when assigning ids to osr compilations") \ | |
2413 \ | |
2414 develop(bool, CICompileNatives, true, \ | |
2415 "compile native methods if supported by the compiler") \ | |
2416 \ | |
2417 develop_pd(bool, CICompileOSR, \ | |
2418 "compile on stack replacement methods if supported by the " \ | |
2419 "compiler") \ | |
2420 \ | |
2421 develop(bool, CIPrintMethodCodes, false, \ | |
2422 "print method bytecodes of the compiled code") \ | |
2423 \ | |
2424 develop(bool, CIPrintTypeFlow, false, \ | |
2425 "print the results of ciTypeFlow analysis") \ | |
2426 \ | |
2427 develop(bool, CITraceTypeFlow, false, \ | |
2428 "detailed per-bytecode tracing of ciTypeFlow analysis") \ | |
2429 \ | |
2430 develop(intx, CICloneLoopTestLimit, 100, \ | |
2431 "size limit for blocks heuristically cloned in ciTypeFlow") \ | |
2432 \ | |
2403 | 2433 develop(intx, OSROnlyBCI, -1, \ |
2434 "OSR only at this bci. Negative values mean exclude that bci") \ | |
2435 \ | |
0 | 2436 /* temp diagnostics */ \ |
2437 \ | |
2438 diagnostic(bool, TraceRedundantCompiles, false, \ | |
2439 "Have compile broker print when a request already in the queue is"\ | |
2440 " requested again") \ | |
2441 \ | |
2442 diagnostic(bool, InitialCompileFast, false, \ | |
2443 "Initial compile at CompLevel_fast_compile") \ | |
2444 \ | |
2445 diagnostic(bool, InitialCompileReallyFast, false, \ | |
2446 "Initial compile at CompLevel_really_fast_compile (no profile)") \ | |
2447 \ | |
2448 diagnostic(bool, FullProfileOnReInterpret, true, \ | |
2449 "On re-interpret unc-trap compile next at CompLevel_fast_compile")\ | |
2450 \ | |
2451 /* compiler */ \ | |
2452 \ | |
2453 product(intx, CICompilerCount, CI_COMPILER_COUNT, \ | |
2454 "Number of compiler threads to run") \ | |
2455 \ | |
2456 product(intx, CompilationPolicyChoice, 0, \ | |
2457 "which compilation policy (0/1)") \ | |
2458 \ | |
2459 develop(bool, UseStackBanging, true, \ | |
2460 "use stack banging for stack overflow checks (required for " \ | |
2461 "proper StackOverflow handling; disable only to measure cost " \ | |
2462 "of stackbanging)") \ | |
2463 \ | |
2464 develop(bool, Use24BitFPMode, true, \ | |
2465 "Set 24-bit FPU mode on a per-compile basis ") \ | |
2466 \ | |
2467 develop(bool, Use24BitFP, true, \ | |
2468 "use FP instructions that produce 24-bit precise results") \ | |
2469 \ | |
2470 develop(bool, UseStrictFP, true, \ | |
2471 "use strict fp if modifier strictfp is set") \ | |
2472 \ | |
2473 develop(bool, GenerateSynchronizationCode, true, \ | |
2474 "generate locking/unlocking code for synchronized methods and " \ | |
2475 "monitors") \ | |
2476 \ | |
2477 develop(bool, GenerateCompilerNullChecks, true, \ | |
2478 "Generate explicit null checks for loads/stores/calls") \ | |
2479 \ | |
2480 develop(bool, GenerateRangeChecks, true, \ | |
2481 "Generate range checks for array accesses") \ | |
2482 \ | |
2483 develop_pd(bool, ImplicitNullChecks, \ | |
2484 "generate code for implicit null checks") \ | |
2485 \ | |
2486 product(bool, PrintSafepointStatistics, false, \ | |
2487 "print statistics about safepoint synchronization") \ | |
2488 \ | |
2489 product(intx, PrintSafepointStatisticsCount, 300, \ | |
2490 "total number of safepoint statistics collected " \ | |
2491 "before printing them out") \ | |
2492 \ | |
2493 product(intx, PrintSafepointStatisticsTimeout, -1, \ | |
2494 "print safepoint statistics only when safepoint takes" \ | |
2495 " more than PrintSafepointSatisticsTimeout in millis") \ | |
2496 \ | |
1321
0f6600cee529
6934758: Expose the break down of clean up task time during safepoint.
xlu
parents:
1288
diff
changeset
|
2497 product(bool, TraceSafepointCleanupTime, false, \ |
0f6600cee529
6934758: Expose the break down of clean up task time during safepoint.
xlu
parents:
1288
diff
changeset
|
2498 "print the break down of clean up tasks performed during" \ |
0f6600cee529
6934758: Expose the break down of clean up task time during safepoint.
xlu
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1288
diff
changeset
|
2499 " safepoint") \ |
0f6600cee529
6934758: Expose the break down of clean up task time during safepoint.
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1288
diff
changeset
|
2500 \ |
0 | 2501 develop(bool, InlineAccessors, true, \ |
2502 "inline accessor methods (get/set)") \ | |
2503 \ | |
2504 product(bool, Inline, true, \ | |
2505 "enable inlining") \ | |
2506 \ | |
2507 product(bool, ClipInlining, true, \ | |
2508 "clip inlining if aggregate method exceeds DesiredMethodLimit") \ | |
2509 \ | |
2510 develop(bool, UseCHA, true, \ | |
2511 "enable CHA") \ | |
2512 \ | |
2513 product(bool, UseTypeProfile, true, \ | |
2514 "Check interpreter profile for historically monomorphic calls") \ | |
2515 \ | |
2516 product(intx, TypeProfileMajorReceiverPercent, 90, \ | |
2517 "% of major receiver type to all profiled receivers") \ | |
2518 \ | |
2519 notproduct(bool, TimeCompiler, false, \ | |
2520 "time the compiler") \ | |
2521 \ | |
2522 notproduct(bool, TimeCompiler2, false, \ | |
2523 "detailed time the compiler (requires +TimeCompiler)") \ | |
2524 \ | |
2525 diagnostic(bool, PrintInlining, false, \ | |
2526 "prints inlining optimizations") \ | |
2527 \ | |
2528 diagnostic(bool, PrintIntrinsics, false, \ | |
2529 "prints attempted and successful inlining of intrinsics") \ | |
2530 \ | |
775
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
726
diff
changeset
|
2531 product(bool, UseCountLeadingZerosInstruction, false, \ |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
726
diff
changeset
|
2532 "Use count leading zeros instruction") \ |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
726
diff
changeset
|
2533 \ |
643
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
642
diff
changeset
|
2534 product(bool, UsePopCountInstruction, false, \ |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
642
diff
changeset
|
2535 "Use population count instruction") \ |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
642
diff
changeset
|
2536 \ |
0 | 2537 diagnostic(ccstrlist, DisableIntrinsic, "", \ |
2538 "do not expand intrinsics whose (internal) names appear here") \ | |
2539 \ | |
2540 develop(bool, StressReflectiveCode, false, \ | |
2541 "Use inexact types at allocations, etc., to test reflection") \ | |
2542 \ | |
2543 develop(bool, EagerInitialization, false, \ | |
2544 "Eagerly initialize classes if possible") \ | |
2545 \ | |
2546 develop(bool, TraceMethodReplacement, false, \ | |
2547 "Print when methods are replaced do to recompilation") \ | |
2548 \ | |
2549 develop(bool, PrintMethodFlushing, false, \ | |
2550 "print the nmethods being flushed") \ | |
2551 \ | |
2552 notproduct(bool, LogMultipleMutexLocking, false, \ | |
2553 "log locking and unlocking of mutexes (only if multiple locks " \ | |
2554 "are held)") \ | |
2555 \ | |
2556 develop(bool, UseRelocIndex, false, \ | |
2557 "use an index to speed random access to relocations") \ | |
2558 \ | |
2559 develop(bool, StressCodeBuffers, false, \ | |
2560 "Exercise code buffer expansion and other rare state changes") \ | |
2561 \ | |
2562 diagnostic(bool, DebugNonSafepoints, trueInDebug, \ | |
2563 "Generate extra debugging info for non-safepoints in nmethods") \ | |
2564 \ | |
2565 diagnostic(bool, DebugInlinedCalls, true, \ | |
2566 "If false, restricts profiled locations to the root method only") \ | |
2567 \ | |
2568 product(bool, PrintVMOptions, trueInDebug, \ | |
1150 | 2569 "Print flags that appeared on the command line") \ |
0 | 2570 \ |
564 | 2571 product(bool, IgnoreUnrecognizedVMOptions, false, \ |
2572 "Ignore unrecognized VM options") \ | |
2573 \ | |
1150 | 2574 product(bool, PrintCommandLineFlags, false, \ |
2575 "Print flags specified on command line or set by ergonomics") \ | |
2576 \ | |
2577 product(bool, PrintFlagsInitial, false, \ | |
2578 "Print all VM flags before argument processing and exit VM") \ | |
2579 \ | |
2580 product(bool, PrintFlagsFinal, false, \ | |
2581 "Print all VM flags after argument and ergonomic processing") \ | |
2582 \ | |
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1749
diff
changeset
|
2583 notproduct(bool, PrintFlagsWithComments, false, \ |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1749
diff
changeset
|
2584 "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
|
2585 \ |
0 | 2586 diagnostic(bool, SerializeVMOutput, true, \ |
2587 "Use a mutex to serialize output to tty and hotspot.log") \ | |
2588 \ | |
2589 diagnostic(bool, DisplayVMOutput, true, \ | |
2590 "Display all VM output on the tty, independently of LogVMOutput") \ | |
2591 \ | |
2592 diagnostic(bool, LogVMOutput, trueInDebug, \ | |
2593 "Save VM output to hotspot.log, or to LogFile") \ | |
2594 \ | |
2595 diagnostic(ccstr, LogFile, NULL, \ | |
2596 "If LogVMOutput is on, save VM output to this file [hotspot.log]") \ | |
2597 \ | |
2598 product(ccstr, ErrorFile, NULL, \ | |
2599 "If an error occurs, save the error data to this file " \ | |
2600 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \ | |
2601 \ | |
2602 product(bool, DisplayVMOutputToStderr, false, \ | |
2603 "If DisplayVMOutput is true, display all VM output to stderr") \ | |
2604 \ | |
2605 product(bool, DisplayVMOutputToStdout, false, \ | |
2606 "If DisplayVMOutput is true, display all VM output to stdout") \ | |
2607 \ | |
2608 product(bool, UseHeavyMonitors, false, \ | |
2609 "use heavyweight instead of lightweight Java monitors") \ | |
2610 \ | |
2611 notproduct(bool, PrintSymbolTableSizeHistogram, false, \ | |
2612 "print histogram of the symbol table") \ | |
2613 \ | |
2614 notproduct(bool, ExitVMOnVerifyError, false, \ | |
2615 "standard exit from VM if bytecode verify error " \ | |
2616 "(only in debug mode)") \ | |
2617 \ | |
2618 notproduct(ccstr, AbortVMOnException, NULL, \ | |
2619 "Call fatal if this exception is thrown. Example: " \ | |
2620 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \ | |
2621 \ | |
1684
66c5dadb4d61
6973308: Missing zero length check before repne scas in check_klass_subtype_slow_path()
kvn
parents:
1660
diff
changeset
|
2622 notproduct(ccstr, AbortVMOnExceptionMessage, NULL, \ |
66c5dadb4d61
6973308: Missing zero length check before repne scas in check_klass_subtype_slow_path()
kvn
parents:
1660
diff
changeset
|
2623 "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
|
2624 "has this message.") \ |
66c5dadb4d61
6973308: Missing zero length check before repne scas in check_klass_subtype_slow_path()
kvn
parents:
1660
diff
changeset
|
2625 \ |
0 | 2626 develop(bool, DebugVtables, false, \ |
2627 "add debugging code to vtable dispatch") \ | |
2628 \ | |
2629 develop(bool, PrintVtables, false, \ | |
2630 "print vtables when printing klass") \ | |
2631 \ | |
2632 notproduct(bool, PrintVtableStats, false, \ | |
2633 "print vtables stats at end of run") \ | |
2634 \ | |
2635 develop(bool, TraceCreateZombies, false, \ | |
2636 "trace creation of zombie nmethods") \ | |
2637 \ | |
2638 notproduct(bool, IgnoreLockingAssertions, false, \ | |
2639 "disable locking assertions (for speed)") \ | |
2640 \ | |
2641 notproduct(bool, VerifyLoopOptimizations, false, \ | |
2642 "verify major loop optimizations") \ | |
2643 \ | |
2644 product(bool, RangeCheckElimination, true, \ | |
2645 "Split loop iterations to eliminate range checks") \ | |
2646 \ | |
2647 develop_pd(bool, UncommonNullCast, \ | |
2648 "track occurrences of null in casts; adjust compiler tactics") \ | |
2649 \ | |
2650 develop(bool, TypeProfileCasts, true, \ | |
2651 "treat casts like calls for purposes of type profiling") \ | |
2652 \ | |
2653 develop(bool, MonomorphicArrayCheck, true, \ | |
2654 "Uncommon-trap array store checks that require full type check") \ | |
2655 \ | |
1746
4b29a725c43c
6912064: type profiles need to be exploited more for dynamic language support
jrose
parents:
1692
diff
changeset
|
2656 diagnostic(bool, ProfileDynamicTypes, true, \ |
4b29a725c43c
6912064: type profiles need to be exploited more for dynamic language support
jrose
parents:
1692
diff
changeset
|
2657 "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
|
2658 \ |
0 | 2659 develop(bool, DelayCompilationDuringStartup, true, \ |
2660 "Delay invoking the compiler until main application class is " \ | |
2661 "loaded") \ | |
2662 \ | |
2663 develop(bool, CompileTheWorld, false, \ | |
2664 "Compile all methods in all classes in bootstrap class path " \ | |
2665 "(stress test)") \ | |
2666 \ | |
2667 develop(bool, CompileTheWorldPreloadClasses, true, \ | |
2668 "Preload all classes used by a class before start loading") \ | |
2669 \ | |
1188
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1179
diff
changeset
|
2670 notproduct(intx, CompileTheWorldSafepointInterval, 100, \ |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1179
diff
changeset
|
2671 "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
|
2672 \ |
0 | 2673 develop(bool, TraceIterativeGVN, false, \ |
2674 "Print progress during Iterative Global Value Numbering") \ | |
2675 \ | |
2676 develop(bool, FillDelaySlots, true, \ | |
2677 "Fill delay slots (on SPARC only)") \ | |
2678 \ | |
2679 develop(bool, VerifyIterativeGVN, false, \ | |
2680 "Verify Def-Use modifications during sparse Iterative Global " \ | |
2681 "Value Numbering") \ | |
2682 \ | |
2683 notproduct(bool, TracePhaseCCP, false, \ | |
2684 "Print progress during Conditional Constant Propagation") \ | |
2685 \ | |
2686 develop(bool, TimeLivenessAnalysis, false, \ | |
2687 "Time computation of bytecode liveness analysis") \ | |
2688 \ | |
2689 develop(bool, TraceLivenessGen, false, \ | |
2690 "Trace the generation of liveness analysis information") \ | |
2691 \ | |
2692 notproduct(bool, TraceLivenessQuery, false, \ | |
2693 "Trace queries of liveness analysis information") \ | |
2694 \ | |
2695 notproduct(bool, CollectIndexSetStatistics, false, \ | |
2696 "Collect information about IndexSets") \ | |
2697 \ | |
2698 develop(bool, PrintDominators, false, \ | |
2699 "Print out dominator trees for GVN") \ | |
2700 \ | |
2701 develop(bool, UseLoopSafepoints, true, \ | |
2702 "Generate Safepoint nodes in every loop") \ | |
2703 \ | |
2704 notproduct(bool, TraceCISCSpill, false, \ | |
2705 "Trace allocators use of cisc spillable instructions") \ | |
2706 \ | |
2707 notproduct(bool, TraceSpilling, false, \ | |
2708 "Trace spilling") \ | |
2709 \ | |
2710 product(bool, SplitIfBlocks, true, \ | |
2711 "Clone compares and control flow through merge points to fold " \ | |
2712 "some branches") \ | |
2713 \ | |
2714 develop(intx, FastAllocateSizeLimit, 128*K, \ | |
2715 /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \ | |
2716 "Inline allocations larger than this in doublewords must go slow")\ | |
2717 \ | |
2718 product(bool, AggressiveOpts, false, \ | |
2719 "Enable aggressive optimizations - see arguments.cpp") \ | |
2720 \ | |
192
6d13fcb3663f
6714404: Add UseStringCache switch to enable String caching under AggressiveOpts
kvn
parents:
174
diff
changeset
|
2721 product(bool, UseStringCache, false, \ |
6d13fcb3663f
6714404: Add UseStringCache switch to enable String caching under AggressiveOpts
kvn
parents:
174
diff
changeset
|
2722 "Enable String cache capabilities on String.java") \ |
6d13fcb3663f
6714404: Add UseStringCache switch to enable String caching under AggressiveOpts
kvn
parents:
174
diff
changeset
|
2723 \ |
0 | 2724 /* statistics */ \ |
2725 develop(bool, CountCompiledCalls, false, \ | |
2726 "counts method invocations") \ | |
2727 \ | |
2728 notproduct(bool, CountRuntimeCalls, false, \ | |
2729 "counts VM runtime calls") \ | |
2730 \ | |
2731 develop(bool, CountJNICalls, false, \ | |
2732 "counts jni method invocations") \ | |
2733 \ | |
2734 notproduct(bool, CountJVMCalls, false, \ | |
2735 "counts jvm method invocations") \ | |
2736 \ | |
2737 notproduct(bool, CountRemovableExceptions, false, \ | |
2738 "count exceptions that could be replaced by branches due to " \ | |
2739 "inlining") \ | |
2740 \ | |
2741 notproduct(bool, ICMissHistogram, false, \ | |
2742 "produce histogram of IC misses") \ | |
2743 \ | |
2744 notproduct(bool, PrintClassStatistics, false, \ | |
2745 "prints class statistics at end of run") \ | |
2746 \ | |
2747 notproduct(bool, PrintMethodStatistics, false, \ | |
2748 "prints method statistics at end of run") \ | |
2749 \ | |
2750 /* interpreter */ \ | |
2751 develop(bool, ClearInterpreterLocals, false, \ | |
2752 "Always clear local variables of interpreter activations upon " \ | |
2753 "entry") \ | |
2754 \ | |
2755 product_pd(bool, RewriteBytecodes, \ | |
2756 "Allow rewriting of bytecodes (bytecodes are not immutable)") \ | |
2757 \ | |
2758 product_pd(bool, RewriteFrequentPairs, \ | |
2759 "Rewrite frequently used bytecode pairs into a single bytecode") \ | |
2760 \ | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
76
diff
changeset
|
2761 diagnostic(bool, PrintInterpreter, false, \ |
0 | 2762 "Prints the generated interpreter code") \ |
2763 \ | |
2764 product(bool, UseInterpreter, true, \ | |
2765 "Use interpreter for non-compiled methods") \ | |
2766 \ | |
2767 develop(bool, UseFastSignatureHandlers, true, \ | |
2768 "Use fast signature handlers for native calls") \ | |
2769 \ | |
2770 develop(bool, UseV8InstrsOnly, false, \ | |
2771 "Use SPARC-V8 Compliant instruction subset") \ | |
2772 \ | |
2773 product(bool, UseNiagaraInstrs, false, \ | |
2774 "Use Niagara-efficient instruction subset") \ | |
2775 \ | |
2776 develop(bool, UseCASForSwap, false, \ | |
2777 "Do not use swap instructions, but only CAS (in a loop) on SPARC")\ | |
2778 \ | |
2779 product(bool, UseLoopCounter, true, \ | |
2780 "Increment invocation counter on backward branch") \ | |
2781 \ | |
2782 product(bool, UseFastEmptyMethods, true, \ | |
2783 "Use fast method entry code for empty methods") \ | |
2784 \ | |
2785 product(bool, UseFastAccessorMethods, true, \ | |
2786 "Use fast method entry code for accessor methods") \ | |
2787 \ | |
2788 product_pd(bool, UseOnStackReplacement, \ | |
2789 "Use on stack replacement, calls runtime if invoc. counter " \ | |
2790 "overflows in loop") \ | |
2791 \ | |
2792 notproduct(bool, TraceOnStackReplacement, false, \ | |
2793 "Trace on stack replacement") \ | |
2794 \ | |
2795 develop(bool, PoisonOSREntry, true, \ | |
2796 "Detect abnormal calls to OSR code") \ | |
2797 \ | |
2798 product_pd(bool, PreferInterpreterNativeStubs, \ | |
2799 "Use always interpreter stubs for native methods invoked via " \ | |
2800 "interpreter") \ | |
2801 \ | |
2802 develop(bool, CountBytecodes, false, \ | |
2803 "Count number of bytecodes executed") \ | |
2804 \ | |
2805 develop(bool, PrintBytecodeHistogram, false, \ | |
2806 "Print histogram of the executed bytecodes") \ | |
2807 \ | |
2808 develop(bool, PrintBytecodePairHistogram, false, \ | |
2809 "Print histogram of the executed bytecode pairs") \ | |
2810 \ | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
76
diff
changeset
|
2811 diagnostic(bool, PrintSignatureHandlers, false, \ |
0 | 2812 "Print code generated for native method signature handlers") \ |
2813 \ | |
2814 develop(bool, VerifyOops, false, \ | |
2815 "Do plausibility checks for oops") \ | |
2816 \ | |
2817 develop(bool, CheckUnhandledOops, false, \ | |
2818 "Check for unhandled oops in VM code") \ | |
2819 \ | |
2820 develop(bool, VerifyJNIFields, trueInDebug, \ | |
2821 "Verify jfieldIDs for instance fields") \ | |
2822 \ | |
2823 notproduct(bool, VerifyJNIEnvThread, false, \ | |
2824 "Verify JNIEnv.thread == Thread::current() when entering VM " \ | |
2825 "from JNI") \ | |
2826 \ | |
2827 develop(bool, VerifyFPU, false, \ | |
2828 "Verify FPU state (check for NaN's, etc.)") \ | |
2829 \ | |
2830 develop(bool, VerifyThread, false, \ | |
2831 "Watch the thread register for corruption (SPARC only)") \ | |
2832 \ | |
2833 develop(bool, VerifyActivationFrameSize, false, \ | |
2834 "Verify that activation frame didn't become smaller than its " \ | |
2835 "minimal size") \ | |
2836 \ | |
2837 develop(bool, TraceFrequencyInlining, false, \ | |
2838 "Trace frequency based inlining") \ | |
2839 \ | |
2840 notproduct(bool, TraceTypeProfile, false, \ | |
2841 "Trace type profile") \ | |
2842 \ | |
2843 develop_pd(bool, InlineIntrinsics, \ | |
2844 "Inline intrinsics that can be statically resolved") \ | |
2845 \ | |
2846 product_pd(bool, ProfileInterpreter, \ | |
2847 "Profile at the bytecode level during interpretation") \ | |
2848 \ | |
2849 develop_pd(bool, ProfileTraps, \ | |
2850 "Profile deoptimization traps at the bytecode level") \ | |
2851 \ | |
2852 product(intx, ProfileMaturityPercentage, 20, \ | |
2853 "number of method invocations/branches (expressed as % of " \ | |
2854 "CompileThreshold) before using the method's profile") \ | |
2855 \ | |
2856 develop(bool, PrintMethodData, false, \ | |
2857 "Print the results of +ProfileInterpreter at end of run") \ | |
2858 \ | |
2859 develop(bool, VerifyDataPointer, trueInDebug, \ | |
2860 "Verify the method data pointer during interpreter profiling") \ | |
2861 \ | |
2862 develop(bool, VerifyCompiledCode, false, \ | |
2863 "Include miscellaneous runtime verifications in nmethod code; " \ | |
1064 | 2864 "default off because it disturbs nmethod size heuristics") \ |
0 | 2865 \ |
1119
547f81740344
6361589: Print out stack trace for target thread of GC crash
minqi
parents:
1064
diff
changeset
|
2866 notproduct(bool, CrashGCForDumpingJavaThread, false, \ |
547f81740344
6361589: Print out stack trace for target thread of GC crash
minqi
parents:
1064
diff
changeset
|
2867 "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
|
2868 "Test only") \ |
0 | 2869 \ |
2870 /* compilation */ \ | |
2871 product(bool, UseCompiler, true, \ | |
2872 "use compilation") \ | |
2873 \ | |
2874 develop(bool, TraceCompilationPolicy, false, \ | |
2875 "Trace compilation policy") \ | |
2876 \ | |
2877 develop(bool, TimeCompilationPolicy, false, \ | |
2878 "Time the compilation policy") \ | |
2879 \ | |
2880 product(bool, UseCounterDecay, true, \ | |
2881 "adjust recompilation counters") \ | |
2882 \ | |
2883 develop(intx, CounterHalfLifeTime, 30, \ | |
2884 "half-life time of invocation counters (in secs)") \ | |
2885 \ | |
2886 develop(intx, CounterDecayMinIntervalLength, 500, \ | |
2887 "Min. ms. between invocation of CounterDecay") \ | |
2888 \ | |
2889 product(bool, AlwaysCompileLoopMethods, false, \ | |
2890 "when using recompilation, never interpret methods " \ | |
2891 "containing loops") \ | |
2892 \ | |
2893 product(bool, DontCompileHugeMethods, true, \ | |
2894 "don't compile methods > HugeMethodLimit") \ | |
2895 \ | |
2896 /* Bytecode escape analysis estimation. */ \ | |
2897 product(bool, EstimateArgEscape, true, \ | |
2898 "Analyze bytecodes to estimate escape state of arguments") \ | |
2899 \ | |
2900 product(intx, BCEATraceLevel, 0, \ | |
2901 "How much tracing to do of bytecode escape analysis estimates") \ | |
2902 \ | |
2903 product(intx, MaxBCEAEstimateLevel, 5, \ | |
2904 "Maximum number of nested calls that are analyzed by BC EA.") \ | |
2905 \ | |
2906 product(intx, MaxBCEAEstimateSize, 150, \ | |
2907 "Maximum bytecode size of a method to be analyzed by BC EA.") \ | |
2908 \ | |
2909 product(intx, AllocatePrefetchStyle, 1, \ | |
2910 "0 = no prefetch, " \ | |
2911 "1 = prefetch instructions for each allocation, " \ | |
1367
9e321dcfa5b7
6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents:
1366
diff
changeset
|
2912 "2 = use TLAB watermark to gate allocation prefetch, " \ |
9e321dcfa5b7
6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents:
1366
diff
changeset
|
2913 "3 = use BIS instruction on Sparc for allocation prefetch") \ |
0 | 2914 \ |
2915 product(intx, AllocatePrefetchDistance, -1, \ | |
2916 "Distance to prefetch ahead of allocation pointer") \ | |
2917 \ | |
3854 | 2918 product(intx, AllocatePrefetchLines, 3, \ |
2919 "Number of lines to prefetch ahead of array allocation pointer") \ | |
2920 \ | |
2921 product(intx, AllocateInstancePrefetchLines, 1, \ | |
2922 "Number of lines to prefetch ahead of instance allocation pointer") \ | |
0 | 2923 \ |
2924 product(intx, AllocatePrefetchStepSize, 16, \ | |
2925 "Step size in bytes of sequential prefetch instructions") \ | |
2926 \ | |
2927 product(intx, AllocatePrefetchInstr, 0, \ | |
2928 "Prefetch instruction to prefetch ahead of allocation pointer") \ | |
2929 \ | |
2930 product(intx, ReadPrefetchInstr, 0, \ | |
2931 "Prefetch instruction to prefetch ahead") \ | |
2932 \ | |
3903 | 2933 product(uintx, ArraycopySrcPrefetchDistance, 0, \ |
2934 "Distance to prefetch source array in arracopy") \ | |
2935 \ | |
2936 product(uintx, ArraycopyDstPrefetchDistance, 0, \ | |
2937 "Distance to prefetch destination array in arracopy") \ | |
2938 \ | |
0 | 2939 /* deoptimization */ \ |
2940 develop(bool, TraceDeoptimization, false, \ | |
2941 "Trace deoptimization") \ | |
2942 \ | |
2943 develop(bool, DebugDeoptimization, false, \ | |
2944 "Tracing various information while debugging deoptimization") \ | |
2945 \ | |
2946 product(intx, SelfDestructTimer, 0, \ | |
2947 "Will cause VM to terminate after a given time (in minutes) " \ | |
2948 "(0 means off)") \ | |
2949 \ | |
2950 product(intx, MaxJavaStackTraceDepth, 1024, \ | |
2951 "Max. no. of lines in the stack trace for Java exceptions " \ | |
2952 "(0 means all)") \ | |
2953 \ | |
3328
277d0f6ca64d
7005503: Make GuaranteedSafepointInterval a diagnostic flag
kevinw
parents:
3255
diff
changeset
|
2954 NOT_EMBEDDED(diagnostic(intx, GuaranteedSafepointInterval, 1000, \ |
0 | 2955 "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
|
2956 "(0 means none)")) \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
2957 \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
2958 EMBEDDED_ONLY(product(intx, GuaranteedSafepointInterval, 0, \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
2959 "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
|
2960 "(0 means none)")) \ |
0 | 2961 \ |
2962 product(intx, SafepointTimeoutDelay, 10000, \ | |
2963 "Delay in milliseconds for option SafepointTimeout") \ | |
2964 \ | |
2965 product(intx, NmethodSweepFraction, 4, \ | |
2966 "Number of invocations of sweeper to cover all nmethods") \ | |
2967 \ | |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1513
diff
changeset
|
2968 product(intx, NmethodSweepCheckInterval, 5, \ |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1513
diff
changeset
|
2969 "Compilers wake up every n seconds to possibly sweep nmethods") \ |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1513
diff
changeset
|
2970 \ |
3384
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
2971 notproduct(bool, LogSweeper, false, \ |
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
2972 "Keep a ring buffer of sweeper activity") \ |
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
2973 \ |
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
2974 notproduct(intx, SweeperLogEntries, 1024, \ |
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
2975 "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
|
2976 \ |
0 | 2977 notproduct(intx, MemProfilingInterval, 500, \ |
2978 "Time between each invocation of the MemProfiler") \ | |
2979 \ | |
2980 develop(intx, MallocCatchPtr, -1, \ | |
2981 "Hit breakpoint when mallocing/freeing this pointer") \ | |
2982 \ | |
2983 notproduct(intx, AssertRepeat, 1, \ | |
2984 "number of times to evaluate expression in assert " \ | |
2985 "(to estimate overhead); only works with -DUSE_REPEATED_ASSERTS") \ | |
2986 \ | |
2987 notproduct(ccstrlist, SuppressErrorAt, "", \ | |
2988 "List of assertions (file:line) to muzzle") \ | |
2989 \ | |
2990 notproduct(uintx, HandleAllocationLimit, 1024, \ | |
2991 "Threshold for HandleMark allocation when +TraceHandleAllocation "\ | |
2992 "is used") \ | |
2993 \ | |
2994 develop(uintx, TotalHandleAllocationLimit, 1024, \ | |
2995 "Threshold for total handle allocation when " \ | |
2996 "+TraceHandleAllocation is used") \ | |
2997 \ | |
2998 develop(intx, StackPrintLimit, 100, \ | |
2999 "number of stack frames to print in VM-level stack dump") \ | |
3000 \ | |
3001 notproduct(intx, MaxElementPrintSize, 256, \ | |
3002 "maximum number of elements to print") \ | |
3003 \ | |
3004 notproduct(intx, MaxSubklassPrintSize, 4, \ | |
3005 "maximum number of subklasses to print when printing klass") \ | |
3006 \ | |
1157
c3b315a0d58a
6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents:
1150
diff
changeset
|
3007 product(intx, MaxInlineLevel, 9, \ |
0 | 3008 "maximum number of nested calls that are inlined") \ |
3009 \ | |
1157
c3b315a0d58a
6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents:
1150
diff
changeset
|
3010 product(intx, MaxRecursiveInlineLevel, 1, \ |
0 | 3011 "maximum number of nested recursive calls that are inlined") \ |
3012 \ | |
675 | 3013 product_pd(intx, InlineSmallCode, \ |
0 | 3014 "Only inline already compiled methods if their code size is " \ |
3015 "less than this") \ | |
3016 \ | |
3017 product(intx, MaxInlineSize, 35, \ | |
3018 "maximum bytecode size of a method to be inlined") \ | |
3019 \ | |
3020 product_pd(intx, FreqInlineSize, \ | |
3021 "maximum bytecode size of a frequent method to be inlined") \ | |
3022 \ | |
1157
c3b315a0d58a
6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents:
1150
diff
changeset
|
3023 product(intx, MaxTrivialSize, 6, \ |
0 | 3024 "maximum bytecode size of a trivial method to be inlined") \ |
3025 \ | |
1157
c3b315a0d58a
6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents:
1150
diff
changeset
|
3026 product(intx, MinInliningThreshold, 250, \ |
0 | 3027 "min. invocation count a method needs to have to be inlined") \ |
3028 \ | |
3029 develop(intx, AlignEntryCode, 4, \ | |
3030 "aligns entry code to specified value (in bytes)") \ | |
3031 \ | |
3032 develop(intx, MethodHistogramCutoff, 100, \ | |
3033 "cutoff value for method invoc. histogram (+CountCalls)") \ | |
3034 \ | |
3035 develop(intx, ProfilerNumberOfInterpretedMethods, 25, \ | |
3036 "# of interpreted methods to show in profile") \ | |
3037 \ | |
3038 develop(intx, ProfilerNumberOfCompiledMethods, 25, \ | |
3039 "# of compiled methods to show in profile") \ | |
3040 \ | |
3041 develop(intx, ProfilerNumberOfStubMethods, 25, \ | |
3042 "# of stub methods to show in profile") \ | |
3043 \ | |
3044 develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \ | |
3045 "# of runtime stub nodes to show in profile") \ | |
3046 \ | |
3047 product(intx, ProfileIntervalsTicks, 100, \ | |
3048 "# of ticks between printing of interval profile " \ | |
3049 "(+ProfileIntervals)") \ | |
3050 \ | |
3051 notproduct(intx, ScavengeALotInterval, 1, \ | |
3052 "Interval between which scavenge will occur with +ScavengeALot") \ | |
3053 \ | |
3054 notproduct(intx, FullGCALotInterval, 1, \ | |
3055 "Interval between which full gc will occur with +FullGCALot") \ | |
3056 \ | |
3057 notproduct(intx, FullGCALotStart, 0, \ | |
3058 "For which invocation to start FullGCAlot") \ | |
3059 \ | |
3060 notproduct(intx, FullGCALotDummies, 32*K, \ | |
3061 "Dummy object allocated with +FullGCALot, forcing all objects " \ | |
3062 "to move") \ | |
3063 \ | |
3064 develop(intx, DontYieldALotInterval, 10, \ | |
3065 "Interval between which yields will be dropped (milliseconds)") \ | |
3066 \ | |
3067 develop(intx, MinSleepInterval, 1, \ | |
3068 "Minimum sleep() interval (milliseconds) when " \ | |
3069 "ConvertSleepToYield is off (used for SOLARIS)") \ | |
3070 \ | |
3071 product(intx, EventLogLength, 2000, \ | |
3072 "maximum nof events in event log") \ | |
3073 \ | |
3074 develop(intx, ProfilerPCTickThreshold, 15, \ | |
3075 "Number of ticks in a PC buckets to be a hotspot") \ | |
3076 \ | |
3077 notproduct(intx, DeoptimizeALotInterval, 5, \ | |
3078 "Number of exits until DeoptimizeALot kicks in") \ | |
3079 \ | |
3080 notproduct(intx, ZombieALotInterval, 5, \ | |
3081 "Number of exits until ZombieALot kicks in") \ | |
3082 \ | |
3083 develop(bool, StressNonEntrant, false, \ | |
3084 "Mark nmethods non-entrant at registration") \ | |
3085 \ | |
3086 diagnostic(intx, MallocVerifyInterval, 0, \ | |
3087 "if non-zero, verify C heap after every N calls to " \ | |
3088 "malloc/realloc/free") \ | |
3089 \ | |
3090 diagnostic(intx, MallocVerifyStart, 0, \ | |
3091 "if non-zero, start verifying C heap after Nth call to " \ | |
3092 "malloc/realloc/free") \ | |
3093 \ | |
1783 | 3094 product(intx, TypeProfileWidth, 2, \ |
0 | 3095 "number of receiver types to record in call/cast profile") \ |
3096 \ | |
3097 develop(intx, BciProfileWidth, 2, \ | |
3098 "number of return bci's to record in ret profile") \ | |
3099 \ | |
3100 product(intx, PerMethodRecompilationCutoff, 400, \ | |
3101 "After recompiling N times, stay in the interpreter (-1=>'Inf')") \ | |
3102 \ | |
1206
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1202
diff
changeset
|
3103 product(intx, PerBytecodeRecompilationCutoff, 200, \ |
0 | 3104 "Per-BCI limit on repeated recompilation (-1=>'Inf')") \ |
3105 \ | |
3106 product(intx, PerMethodTrapLimit, 100, \ | |
3107 "Limit on traps (of one kind) in a method (includes inlines)") \ | |
3108 \ | |
3109 product(intx, PerBytecodeTrapLimit, 4, \ | |
3110 "Limit on traps (of one kind) at a particular BCI") \ | |
3111 \ | |
3112 develop(intx, FreqCountInvocations, 1, \ | |
3113 "Scaling factor for branch frequencies (deprecated)") \ | |
3114 \ | |
3115 develop(intx, InlineFrequencyRatio, 20, \ | |
3116 "Ratio of call site execution to caller method invocation") \ | |
3117 \ | |
3118 develop_pd(intx, InlineFrequencyCount, \ | |
3119 "Count of call site execution necessary to trigger frequent " \ | |
3120 "inlining") \ | |
3121 \ | |
3122 develop(intx, InlineThrowCount, 50, \ | |
3123 "Force inlining of interpreted methods that throw this often") \ | |
3124 \ | |
3125 develop(intx, InlineThrowMaxSize, 200, \ | |
3126 "Force inlining of throwing methods smaller than this") \ | |
3127 \ | |
3128 product(intx, AliasLevel, 3, \ | |
3129 "0 for no aliasing, 1 for oop/field/static/array split, " \ | |
3130 "2 for class split, 3 for unique instances") \ | |
3131 \ | |
3132 develop(bool, VerifyAliases, false, \ | |
3133 "perform extra checks on the results of alias analysis") \ | |
3134 \ | |
3135 develop(intx, ProfilerNodeSize, 1024, \ | |
3136 "Size in K to allocate for the Profile Nodes of each thread") \ | |
3137 \ | |
3138 develop(intx, V8AtomicOperationUnderLockSpinCount, 50, \ | |
3139 "Number of times to spin wait on a v8 atomic operation lock") \ | |
3140 \ | |
3141 product(intx, ReadSpinIterations, 100, \ | |
3142 "Number of read attempts before a yield (spin inner loop)") \ | |
3143 \ | |
3144 product_pd(intx, PreInflateSpin, \ | |
3145 "Number of times to spin wait before inflation") \ | |
3146 \ | |
3147 product(intx, PreBlockSpin, 10, \ | |
3148 "Number of times to spin in an inflated lock before going to " \ | |
3149 "an OS lock") \ | |
3150 \ | |
3151 /* gc parameters */ \ | |
1064 | 3152 product(uintx, InitialHeapSize, 0, \ |
3153 "Initial heap size (in bytes); zero means OldSize + NewSize") \ | |
3154 \ | |
3155 product(uintx, MaxHeapSize, ScaleForWordSize(96*M), \ | |
3156 "Maximum heap size (in bytes)") \ | |
3157 \ | |
3158 product(uintx, OldSize, ScaleForWordSize(4*M), \ | |
3159 "Initial tenured generation size (in bytes)") \ | |
3160 \ | |
1287
8911d8c0596f
6923123: Hotspot refuses to start when -Xmx4m or -Xms4m is specified
phh
parents:
1211
diff
changeset
|
3161 product(uintx, NewSize, ScaleForWordSize(1*M), \ |
1064 | 3162 "Initial new generation size (in bytes)") \ |
0 | 3163 \ |
3164 product(uintx, MaxNewSize, max_uintx, \ | |
1064 | 3165 "Maximum new generation size (in bytes), max_uintx means set " \ |
3166 "ergonomically") \ | |
0 | 3167 \ |
3168 product(uintx, PretenureSizeThreshold, 0, \ | |
1064 | 3169 "Maximum size in bytes of objects allocated in DefNew " \ |
3170 "generation; zero means no maximum") \ | |
3171 \ | |
3172 product(uintx, TLABSize, 0, \ | |
3173 "Starting TLAB size (in bytes); zero means set ergonomically") \ | |
0 | 3174 \ |
3175 product(uintx, MinTLABSize, 2*K, \ | |
3176 "Minimum allowed TLAB size (in bytes)") \ | |
3177 \ | |
3178 product(uintx, TLABAllocationWeight, 35, \ | |
3179 "Allocation averaging weight") \ | |
3180 \ | |
3181 product(uintx, TLABWasteTargetPercent, 1, \ | |
3182 "Percentage of Eden that can be wasted") \ | |
3183 \ | |
3184 product(uintx, TLABRefillWasteFraction, 64, \ | |
3185 "Max TLAB waste at a refill (internal fragmentation)") \ | |
3186 \ | |
3187 product(uintx, TLABWasteIncrement, 4, \ | |
3188 "Increment allowed waste at slow allocation") \ | |
3189 \ | |
1064 | 3190 product(intx, SurvivorRatio, 8, \ |
0 | 3191 "Ratio of eden/survivor space size") \ |
3192 \ | |
1064 | 3193 product(intx, NewRatio, 2, \ |
0 | 3194 "Ratio of new/old generation sizes") \ |
3195 \ | |
3196 product_pd(uintx, NewSizeThreadIncrease, \ | |
3197 "Additional size added to desired new generation size per " \ | |
3198 "non-daemon thread (in bytes)") \ | |
3199 \ | |
3200 product_pd(uintx, PermSize, \ | |
1064 | 3201 "Initial size of permanent generation (in bytes)") \ |
0 | 3202 \ |
3203 product_pd(uintx, MaxPermSize, \ | |
3204 "Maximum size of permanent generation (in bytes)") \ | |
3205 \ | |
3206 product(uintx, MinHeapFreeRatio, 40, \ | |
3207 "Min percentage of heap free after GC to avoid expansion") \ | |
3208 \ | |
3209 product(uintx, MaxHeapFreeRatio, 70, \ | |
3210 "Max percentage of heap free after GC to avoid shrinking") \ | |
3211 \ | |
3212 product(intx, SoftRefLRUPolicyMSPerMB, 1000, \ | |
3213 "Number of milliseconds per MB of free space in the heap") \ | |
3214 \ | |
3215 product(uintx, MinHeapDeltaBytes, ScaleForWordSize(128*K), \ | |
3216 "Min change in heap space due to GC (in bytes)") \ | |
3217 \ | |
3218 product(uintx, MinPermHeapExpansion, ScaleForWordSize(256*K), \ | |
3219 "Min expansion of permanent heap (in bytes)") \ | |
3220 \ | |
3221 product(uintx, MaxPermHeapExpansion, ScaleForWordSize(4*M), \ | |
3222 "Max expansion of permanent heap without full GC (in bytes)") \ | |
3223 \ | |
3224 product(intx, QueuedAllocationWarningCount, 0, \ | |
3225 "Number of times an allocation that queues behind a GC " \ | |
3226 "will retry before printing a warning") \ | |
3227 \ | |
3228 diagnostic(uintx, VerifyGCStartAt, 0, \ | |
3229 "GC invoke count where +VerifyBefore/AfterGC kicks in") \ | |
3230 \ | |
3231 diagnostic(intx, VerifyGCLevel, 0, \ | |
3232 "Generation level at which to start +VerifyBefore/AfterGC") \ | |
3233 \ | |
3234 develop(uintx, ExitAfterGCNum, 0, \ | |
3235 "If non-zero, exit after this GC.") \ | |
3236 \ | |
3237 product(intx, MaxTenuringThreshold, 15, \ | |
3238 "Maximum value for tenuring threshold") \ | |
3239 \ | |
3240 product(intx, InitialTenuringThreshold, 7, \ | |
3241 "Initial value for tenuring threshold") \ | |
3242 \ | |
3243 product(intx, TargetSurvivorRatio, 50, \ | |
3244 "Desired percentage of survivor space used after scavenge") \ | |
3245 \ | |
438 | 3246 product(uintx, MarkSweepDeadRatio, 5, \ |
0 | 3247 "Percentage (0-100) of the old gen allowed as dead wood." \ |
3248 "Serial mark sweep treats this as both the min and max value." \ | |
3249 "CMS uses this value only if it falls back to mark sweep." \ | |
3250 "Par compact uses a variable scale based on the density of the" \ | |
3251 "generation and treats this as the max value when the heap is" \ | |
3252 "either completely full or completely empty. Par compact also" \ | |
3253 "has a smaller default value; see arguments.cpp.") \ | |
3254 \ | |
438 | 3255 product(uintx, PermMarkSweepDeadRatio, 20, \ |
0 | 3256 "Percentage (0-100) of the perm gen allowed as dead wood." \ |
3257 "See MarkSweepDeadRatio for collector-specific comments.") \ | |
3258 \ | |
3259 product(intx, MarkSweepAlwaysCompactCount, 4, \ | |
3260 "How often should we fully compact the heap (ignoring the dead " \ | |
3261 "space parameters)") \ | |
3262 \ | |
3263 product(intx, PrintCMSStatistics, 0, \ | |
3264 "Statistics for CMS") \ | |
3265 \ | |
3266 product(bool, PrintCMSInitiationStatistics, false, \ | |
3267 "Statistics for initiating a CMS collection") \ | |
3268 \ | |
3269 product(intx, PrintFLSStatistics, 0, \ | |
3270 "Statistics for CMS' FreeListSpace") \ | |
3271 \ | |
3272 product(intx, PrintFLSCensus, 0, \ | |
3273 "Census for CMS' FreeListSpace") \ | |
3274 \ | |
3275 develop(uintx, GCExpandToAllocateDelayMillis, 0, \ | |
3276 "Delay in ms between expansion and allocation") \ | |
3277 \ | |
3278 product(intx, DeferThrSuspendLoopCount, 4000, \ | |
3279 "(Unstable) Number of times to iterate in safepoint loop " \ | |
3280 " before blocking VM threads ") \ | |
3281 \ | |
3282 product(intx, DeferPollingPageLoopCount, -1, \ | |
3283 "(Unsafe,Unstable) Number of iterations in safepoint loop " \ | |
3284 "before changing safepoint polling page to RO ") \ | |
3285 \ | |
3286 product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \ | |
3287 \ | |
3288 product(bool, PSChunkLargeArrays, true, \ | |
3289 "true: process large arrays in chunks") \ | |
3290 \ | |
3291 product(uintx, GCDrainStackTargetSize, 64, \ | |
3292 "how many entries we'll try to leave on the stack during " \ | |
3293 "parallel GC") \ | |
3294 \ | |
3295 /* stack parameters */ \ | |
3296 product_pd(intx, StackYellowPages, \ | |
3297 "Number of yellow zone (recoverable overflows) pages") \ | |
3298 \ | |
3299 product_pd(intx, StackRedPages, \ | |
3300 "Number of red zone (unrecoverable overflows) pages") \ | |
3301 \ | |
3302 product_pd(intx, StackShadowPages, \ | |
3303 "Number of shadow zone (for overflow checking) pages" \ | |
3304 " this should exceed the depth of the VM and native call stack") \ | |
3305 \ | |
3306 product_pd(intx, ThreadStackSize, \ | |
3307 "Thread Stack Size (in Kbytes)") \ | |
3308 \ | |
3309 product_pd(intx, VMThreadStackSize, \ | |
3310 "Non-Java Thread Stack Size (in Kbytes)") \ | |
3311 \ | |
3312 product_pd(intx, CompilerThreadStackSize, \ | |
3313 "Compiler Thread Stack Size (in Kbytes)") \ | |
3314 \ | |
3315 develop_pd(uintx, JVMInvokeMethodSlack, \ | |
3316 "Stack space (bytes) required for JVM_InvokeMethod to complete") \ | |
3317 \ | |
3318 product(uintx, ThreadSafetyMargin, 50*M, \ | |
3319 "Thread safety margin is used on fixed-stack LinuxThreads (on " \ | |
3320 "Linux/x86 only) to prevent heap-stack collision. Set to 0 to " \ | |
3321 "disable this feature") \ | |
3322 \ | |
3323 /* code cache parameters */ \ | |
3324 develop(uintx, CodeCacheSegmentSize, 64, \ | |
3325 "Code cache segment size (in bytes) - smallest unit of " \ | |
3326 "allocation") \ | |
3327 \ | |
3328 develop_pd(intx, CodeEntryAlignment, \ | |
3329 "Code entry alignment for generated code (in bytes)") \ | |
3330 \ | |
1365 | 3331 product_pd(intx, OptoLoopAlignment, \ |
3332 "Align inner loops to zero relative to this modulus") \ | |
3333 \ | |
0 | 3334 product_pd(uintx, InitialCodeCacheSize, \ |
3335 "Initial code cache size (in bytes)") \ | |
3336 \ | |
3337 product_pd(uintx, ReservedCodeCacheSize, \ | |
3338 "Reserved code cache size (in bytes) - maximum code cache size") \ | |
3339 \ | |
3340 product(uintx, CodeCacheMinimumFreeSpace, 500*K, \ | |
3341 "When less than X space left, we stop compiling.") \ | |
3342 \ | |
3343 product_pd(uintx, CodeCacheExpansionSize, \ | |
3344 "Code cache expansion size (in bytes)") \ | |
3345 \ | |
3346 develop_pd(uintx, CodeCacheMinBlockLength, \ | |
3347 "Minimum number of segments in a code cache block.") \ | |
3348 \ | |
3349 notproduct(bool, ExitOnFullCodeCache, false, \ | |
3350 "Exit the VM if we fill the code cache.") \ | |
3351 \ | |
1202 | 3352 product(bool, UseCodeCacheFlushing, false, \ |
3353 "Attempt to clean the code cache before shutting off compiler") \ | |
3354 \ | |
3355 product(intx, MinCodeCacheFlushingInterval, 30, \ | |
3356 "Min number of seconds between code cache cleaning sessions") \ | |
3357 \ | |
3358 product(uintx, CodeCacheFlushingMinimumFreeSpace, 1500*K, \ | |
3359 "When less than X space left, start code cache cleaning") \ | |
3360 \ | |
0 | 3361 /* interpreter debugging */ \ |
3362 develop(intx, BinarySwitchThreshold, 5, \ | |
3363 "Minimal number of lookupswitch entries for rewriting to binary " \ | |
3364 "switch") \ | |
3365 \ | |
3366 develop(intx, StopInterpreterAt, 0, \ | |
3367 "Stops interpreter execution at specified bytecode number") \ | |
3368 \ | |
3369 develop(intx, TraceBytecodesAt, 0, \ | |
3370 "Traces bytecodes starting with specified bytecode number") \ | |
3371 \ | |
3372 /* compiler interface */ \ | |
3373 develop(intx, CIStart, 0, \ | |
3374 "the id of the first compilation to permit") \ | |
3375 \ | |
3376 develop(intx, CIStop, -1, \ | |
3377 "the id of the last compilation to permit") \ | |
3378 \ | |
3379 develop(intx, CIStartOSR, 0, \ | |
3380 "the id of the first osr compilation to permit " \ | |
3381 "(CICountOSR must be on)") \ | |
3382 \ | |
3383 develop(intx, CIStopOSR, -1, \ | |
3384 "the id of the last osr compilation to permit " \ | |
3385 "(CICountOSR must be on)") \ | |
3386 \ | |
3387 develop(intx, CIBreakAtOSR, -1, \ | |
3388 "id of osr compilation to break at") \ | |
3389 \ | |
3390 develop(intx, CIBreakAt, -1, \ | |
3391 "id of compilation to break at") \ | |
3392 \ | |
3393 product(ccstrlist, CompileOnly, "", \ | |
3394 "List of methods (pkg/class.name) to restrict compilation to") \ | |
3395 \ | |
3396 product(ccstr, CompileCommandFile, NULL, \ | |
3397 "Read compiler commands from this file [.hotspot_compiler]") \ | |
3398 \ | |
3399 product(ccstrlist, CompileCommand, "", \ | |
3400 "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \ | |
3401 \ | |
3402 product(bool, CICompilerCountPerCPU, false, \ | |
3403 "1 compiler thread for log(N CPUs)") \ | |
3404 \ | |
3405 develop(intx, CIFireOOMAt, -1, \ | |
3406 "Fire OutOfMemoryErrors throughout CI for testing the compiler " \ | |
3407 "(non-negative value throws OOM after this many CI accesses " \ | |
3408 "in each compile)") \ | |
3409 \ | |
3410 develop(intx, CIFireOOMAtDelay, -1, \ | |
3411 "Wait for this many CI accesses to occur in all compiles before " \ | |
3412 "beginning to throw OutOfMemoryErrors in each compile") \ | |
3413 \ | |
909
b32a809aab08
6866585: debug code in ciObjectFactory too slow for large objects
jcoomes
parents:
905
diff
changeset
|
3414 notproduct(bool, CIObjectFactoryVerify, false, \ |
b32a809aab08
6866585: debug code in ciObjectFactory too slow for large objects
jcoomes
parents:
905
diff
changeset
|
3415 "enable potentially expensive verification in ciObjectFactory") \ |
b32a809aab08
6866585: debug code in ciObjectFactory too slow for large objects
jcoomes
parents:
905
diff
changeset
|
3416 \ |
0 | 3417 /* Priorities */ \ |
3418 product_pd(bool, UseThreadPriorities, "Use native thread priorities") \ | |
3419 \ | |
3420 product(intx, ThreadPriorityPolicy, 0, \ | |
3421 "0 : Normal. "\ | |
3422 " VM chooses priorities that are appropriate for normal "\ | |
3423 " applications. On Solaris NORM_PRIORITY and above are mapped "\ | |
3424 " to normal native priority. Java priorities below NORM_PRIORITY"\ | |
3425 " map to lower native priority values. On Windows applications"\ | |
3426 " are allowed to use higher native priorities. However, with "\ | |
3427 " ThreadPriorityPolicy=0, VM will not use the highest possible"\ | |
3428 " native priority, THREAD_PRIORITY_TIME_CRITICAL, as it may "\ | |
3429 " interfere with system threads. On Linux thread priorities "\ | |
3430 " are ignored because the OS does not support static priority "\ | |
3431 " in SCHED_OTHER scheduling class which is the only choice for"\ | |
3432 " non-root, non-realtime applications. "\ | |
3433 "1 : Aggressive. "\ | |
3434 " Java thread priorities map over to the entire range of "\ | |
3435 " native thread priorities. Higher Java thread priorities map "\ | |
3436 " to higher native thread priorities. This policy should be "\ | |
3437 " used with care, as sometimes it can cause performance "\ | |
3438 " degradation in the application and/or the entire system. On "\ | |
3439 " Linux this policy requires root privilege.") \ | |
3440 \ | |
3441 product(bool, ThreadPriorityVerbose, false, \ | |
3442 "print priority changes") \ | |
3443 \ | |
3444 product(intx, DefaultThreadPriority, -1, \ | |
3445 "what native priority threads run at if not specified elsewhere (-1 means no change)") \ | |
3446 \ | |
3447 product(intx, CompilerThreadPriority, -1, \ | |
3448 "what priority should compiler threads run at (-1 means no change)") \ | |
3449 \ | |
3450 product(intx, VMThreadPriority, -1, \ | |
3451 "what priority should VM threads run at (-1 means no change)") \ | |
3452 \ | |
3453 product(bool, CompilerThreadHintNoPreempt, true, \ | |
3454 "(Solaris only) Give compiler threads an extra quanta") \ | |
3455 \ | |
3456 product(bool, VMThreadHintNoPreempt, false, \ | |
3457 "(Solaris only) Give VM thread an extra quanta") \ | |
3458 \ | |
3459 product(intx, JavaPriority1_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3460 product(intx, JavaPriority2_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3461 product(intx, JavaPriority3_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3462 product(intx, JavaPriority4_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3463 product(intx, JavaPriority5_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3464 product(intx, JavaPriority6_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3465 product(intx, JavaPriority7_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3466 product(intx, JavaPriority8_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3467 product(intx, JavaPriority9_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3468 product(intx, JavaPriority10_To_OSPriority,-1, "Map Java priorities to OS priorities") \ | |
3469 \ | |
3470 /* compiler debugging */ \ | |
3471 notproduct(intx, CompileTheWorldStartAt, 1, \ | |
3472 "First class to consider when using +CompileTheWorld") \ | |
3473 \ | |
3474 notproduct(intx, CompileTheWorldStopAt, max_jint, \ | |
3475 "Last class to consider when using +CompileTheWorld") \ | |
3476 \ | |
3477 develop(intx, NewCodeParameter, 0, \ | |
3478 "Testing Only: Create a dedicated integer parameter before " \ | |
3479 "putback") \ | |
3480 \ | |
3481 /* new oopmap storage allocation */ \ | |
3482 develop(intx, MinOopMapAllocation, 8, \ | |
3483 "Minimum number of OopMap entries in an OopMapSet") \ | |
3484 \ | |
3485 /* Background Compilation */ \ | |
3486 develop(intx, LongCompileThreshold, 50, \ | |
3487 "Used with +TraceLongCompiles") \ | |
3488 \ | |
3489 product(intx, StarvationMonitorInterval, 200, \ | |
3490 "Pause between each check in ms") \ | |
3491 \ | |
3492 /* recompilation */ \ | |
3493 product_pd(intx, CompileThreshold, \ | |
3494 "number of interpreted method invocations before (re-)compiling") \ | |
3495 \ | |
3496 product_pd(intx, BackEdgeThreshold, \ | |
3497 "Interpreter Back edge threshold at which an OSR compilation is invoked")\ | |
3498 \ | |
1783 | 3499 product(intx, Tier0InvokeNotifyFreqLog, 7, \ |
3500 "Interpreter (tier 0) invocation notification frequency.") \ | |
3501 \ | |
3502 product(intx, Tier2InvokeNotifyFreqLog, 11, \ | |
3503 "C1 without MDO (tier 2) invocation notification frequency.") \ | |
3504 \ | |
3505 product(intx, Tier3InvokeNotifyFreqLog, 10, \ | |
3506 "C1 with MDO profiling (tier 3) invocation notification " \ | |
3507 "frequency.") \ | |
3508 \ | |
3509 product(intx, Tier0BackedgeNotifyFreqLog, 10, \ | |
3510 "Interpreter (tier 0) invocation notification frequency.") \ | |
3511 \ | |
3512 product(intx, Tier2BackedgeNotifyFreqLog, 14, \ | |
3513 "C1 without MDO (tier 2) invocation notification frequency.") \ | |
3514 \ | |
3515 product(intx, Tier3BackedgeNotifyFreqLog, 13, \ | |
3516 "C1 with MDO profiling (tier 3) invocation notification " \ | |
3517 "frequency.") \ | |
3518 \ | |
3519 product(intx, Tier2CompileThreshold, 0, \ | |
3520 "threshold at which tier 2 compilation is invoked") \ | |
3521 \ | |
3522 product(intx, Tier2BackEdgeThreshold, 0, \ | |
3523 "Back edge threshold at which tier 2 compilation is invoked") \ | |
3524 \ | |
3525 product(intx, Tier3InvocationThreshold, 200, \ | |
3526 "Compile if number of method invocations crosses this " \ | |
3527 "threshold") \ | |
3528 \ | |
3529 product(intx, Tier3MinInvocationThreshold, 100, \ | |
3530 "Minimum invocation to compile at tier 3") \ | |
3531 \ | |
3532 product(intx, Tier3CompileThreshold, 2000, \ | |
3533 "Threshold at which tier 3 compilation is invoked (invocation " \ | |
3534 "minimum must be satisfied.") \ | |
3535 \ | |
3536 product(intx, Tier3BackEdgeThreshold, 7000, \ | |
3537 "Back edge threshold at which tier 3 OSR compilation is invoked") \ | |
3538 \ | |
3539 product(intx, Tier4InvocationThreshold, 5000, \ | |
3540 "Compile if number of method invocations crosses this " \ | |
3541 "threshold") \ | |
3542 \ | |
3543 product(intx, Tier4MinInvocationThreshold, 600, \ | |
3544 "Minimum invocation to compile at tier 4") \ | |
3545 \ | |
3546 product(intx, Tier4CompileThreshold, 15000, \ | |
3547 "Threshold at which tier 4 compilation is invoked (invocation " \ | |
3548 "minimum must be satisfied.") \ | |
3549 \ | |
3550 product(intx, Tier4BackEdgeThreshold, 40000, \ | |
3551 "Back edge threshold at which tier 4 OSR compilation is invoked") \ | |
3552 \ | |
3553 product(intx, Tier3DelayOn, 5, \ | |
3554 "If C2 queue size grows over this amount per compiler thread " \ | |
3555 "stop compiling at tier 3 and start compiling at tier 2") \ | |
3556 \ | |
3557 product(intx, Tier3DelayOff, 2, \ | |
3558 "If C2 queue size is less than this amount per compiler thread " \ | |
3559 "allow methods compiled at tier 2 transition to tier 3") \ | |
3560 \ | |
3561 product(intx, Tier3LoadFeedback, 5, \ | |
3562 "Tier 3 thresholds will increase twofold when C1 queue size " \ | |
3563 "reaches this amount per compiler thread") \ | |
3564 \ | |
3565 product(intx, Tier4LoadFeedback, 3, \ | |
3566 "Tier 4 thresholds will increase twofold when C2 queue size " \ | |
3567 "reaches this amount per compiler thread") \ | |
3568 \ | |
3569 product(intx, TieredCompileTaskTimeout, 50, \ | |
3570 "Kill compile task if method was not used within " \ | |
3571 "given timeout in milliseconds") \ | |
3572 \ | |
3573 product(intx, TieredStopAtLevel, 4, \ | |
3574 "Stop at given compilation level") \ | |
3575 \ | |
3576 product(intx, Tier0ProfilingStartPercentage, 200, \ | |
3577 "Start profiling in interpreter if the counters exceed tier 3" \ | |
3578 "thresholds by the specified percentage") \ | |
3579 \ | |
3580 product(intx, TieredRateUpdateMinTime, 1, \ | |
3581 "Minimum rate sampling interval (in milliseconds)") \ | |
3582 \ | |
3583 product(intx, TieredRateUpdateMaxTime, 25, \ | |
3584 "Maximum rate sampling interval (in milliseconds)") \ | |
0 | 3585 \ |
3586 product_pd(bool, TieredCompilation, \ | |
1783 | 3587 "Enable tiered compilation") \ |
3588 \ | |
3589 product(bool, PrintTieredEvents, false, \ | |
3590 "Print tiered events notifications") \ | |
0 | 3591 \ |
3592 product(bool, StressTieredRuntime, false, \ | |
3593 "Alternate client and server compiler on compile requests") \ | |
3594 \ | |
3595 product_pd(intx, OnStackReplacePercentage, \ | |
3596 "NON_TIERED number of method invocations/branches (expressed as %"\ | |
3597 "of CompileThreshold) before (re-)compiling OSR code") \ | |
3598 \ | |
3599 product(intx, InterpreterProfilePercentage, 33, \ | |
3600 "NON_TIERED number of method invocations/branches (expressed as %"\ | |
3601 "of CompileThreshold) before profiling in the interpreter") \ | |
3602 \ | |
3603 develop(intx, MaxRecompilationSearchLength, 10, \ | |
3604 "max. # frames to inspect searching for recompilee") \ | |
3605 \ | |
3606 develop(intx, MaxInterpretedSearchLength, 3, \ | |
3607 "max. # interp. frames to skip when searching for recompilee") \ | |
3608 \ | |
3609 develop(intx, DesiredMethodLimit, 8000, \ | |
3610 "desired max. method size (in bytecodes) after inlining") \ | |
3611 \ | |
3612 develop(intx, HugeMethodLimit, 8000, \ | |
3613 "don't compile methods larger than this if " \ | |
3614 "+DontCompileHugeMethods") \ | |
3615 \ | |
3616 /* New JDK 1.4 reflection implementation */ \ | |
3617 \ | |
3618 develop(bool, UseNewReflection, true, \ | |
3619 "Temporary flag for transition to reflection based on dynamic " \ | |
3620 "bytecode generation in 1.4; can no longer be turned off in 1.4 " \ | |
3621 "JDK, and is unneeded in 1.3 JDK, but marks most places VM " \ | |
3622 "changes were needed") \ | |
3623 \ | |
3624 develop(bool, VerifyReflectionBytecodes, false, \ | |
3625 "Force verification of 1.4 reflection bytecodes. Does not work " \ | |
3626 "in situations like that described in 4486457 or for " \ | |
3627 "constructors generated for serialization, so can not be enabled "\ | |
3628 "in product.") \ | |
3629 \ | |
3630 product(bool, ReflectionWrapResolutionErrors, true, \ | |
3631 "Temporary flag for transition to AbstractMethodError wrapped " \ | |
3632 "in InvocationTargetException. See 6531596") \ | |
3633 \ | |
3634 \ | |
3635 develop(intx, FastSuperclassLimit, 8, \ | |
3636 "Depth of hardwired instanceof accelerator array") \ | |
3637 \ | |
3638 /* Properties for Java libraries */ \ | |
3639 \ | |
3640 product(intx, MaxDirectMemorySize, -1, \ | |
3641 "Maximum total size of NIO direct-buffer allocations") \ | |
3642 \ | |
3643 /* temporary developer defined flags */ \ | |
3644 \ | |
3645 diagnostic(bool, UseNewCode, false, \ | |
3646 "Testing Only: Use the new version while testing") \ | |
3647 \ | |
3648 diagnostic(bool, UseNewCode2, false, \ | |
3649 "Testing Only: Use the new version while testing") \ | |
3650 \ | |
3651 diagnostic(bool, UseNewCode3, false, \ | |
3652 "Testing Only: Use the new version while testing") \ | |
3653 \ | |
3654 /* flags for performance data collection */ \ | |
3655 \ | |
3797
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3780
diff
changeset
|
3656 product(bool, UsePerfData, falseInEmbedded, \ |
0 | 3657 "Flag to disable jvmstat instrumentation for performance testing" \ |
3797
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3780
diff
changeset
|
3658 "and problem isolation purposes.") \ |
0 | 3659 \ |
3660 product(bool, PerfDataSaveToFile, false, \ | |
3661 "Save PerfData memory to hsperfdata_<pid> file on exit") \ | |
3662 \ | |
3663 product(ccstr, PerfDataSaveFile, NULL, \ | |
3664 "Save PerfData memory to the specified absolute pathname," \ | |
3665 "%p in the file name if present will be replaced by pid") \ | |
3666 \ | |
3667 product(intx, PerfDataSamplingInterval, 50 /*ms*/, \ | |
3668 "Data sampling interval in milliseconds") \ | |
3669 \ | |
3670 develop(bool, PerfTraceDataCreation, false, \ | |
3671 "Trace creation of Performance Data Entries") \ | |
3672 \ | |
3673 develop(bool, PerfTraceMemOps, false, \ | |
3674 "Trace PerfMemory create/attach/detach calls") \ | |
3675 \ | |
3676 product(bool, PerfDisableSharedMem, false, \ | |
3677 "Store performance data in standard memory") \ | |
3678 \ | |
3679 product(intx, PerfDataMemorySize, 32*K, \ | |
3680 "Size of performance data memory region. Will be rounded " \ | |
3681 "up to a multiple of the native os page size.") \ | |
3682 \ | |
3683 product(intx, PerfMaxStringConstLength, 1024, \ | |
3684 "Maximum PerfStringConstant string length before truncation") \ | |
3685 \ | |
3686 product(bool, PerfAllowAtExitRegistration, false, \ | |
3687 "Allow registration of atexit() methods") \ | |
3688 \ | |
3689 product(bool, PerfBypassFileSystemCheck, false, \ | |
3690 "Bypass Win32 file system criteria checks (Windows Only)") \ | |
3691 \ | |
3692 product(intx, UnguardOnExecutionViolation, 0, \ | |
3693 "Unguard page and retry on no-execute fault (Win32 only)" \ | |
3694 "0=off, 1=conservative, 2=aggressive") \ | |
3695 \ | |
3696 /* Serviceability Support */ \ | |
3697 \ | |
3698 product(bool, ManagementServer, false, \ | |
3699 "Create JMX Management Server") \ | |
3700 \ | |
3701 product(bool, DisableAttachMechanism, false, \ | |
3702 "Disable mechanism that allows tools to attach to this VM") \ | |
3703 \ | |
3704 product(bool, StartAttachListener, false, \ | |
3705 "Always start Attach Listener at VM startup") \ | |
3706 \ | |
3707 manageable(bool, PrintConcurrentLocks, false, \ | |
3708 "Print java.util.concurrent locks in thread dump") \ | |
3709 \ | |
2209
e9aa2ca89ad6
7019718: make error reporting flags product instead of diagnostic
kamg
parents:
2204
diff
changeset
|
3710 product(bool, TransmitErrorReport, false, \ |
2199
d8a72fbc4be7
7003401: Implement VM error-reporting functionality on erroneous termination
kamg
parents:
2192
diff
changeset
|
3711 "Enable error report transmission on erroneous termination") \ |
d8a72fbc4be7
7003401: Implement VM error-reporting functionality on erroneous termination
kamg
parents:
2192
diff
changeset
|
3712 \ |
2209
e9aa2ca89ad6
7019718: make error reporting flags product instead of diagnostic
kamg
parents:
2204
diff
changeset
|
3713 product(ccstr, ErrorReportServer, NULL, \ |
2199
d8a72fbc4be7
7003401: Implement VM error-reporting functionality on erroneous termination
kamg
parents:
2192
diff
changeset
|
3714 "Override built-in error report server address") \ |
d8a72fbc4be7
7003401: Implement VM error-reporting functionality on erroneous termination
kamg
parents:
2192
diff
changeset
|
3715 \ |
0 | 3716 /* Shared spaces */ \ |
3717 \ | |
3718 product(bool, UseSharedSpaces, true, \ | |
3719 "Use shared spaces in the permanent generation") \ | |
3720 \ | |
3721 product(bool, RequireSharedSpaces, false, \ | |
3722 "Require shared spaces in the permanent generation") \ | |
3723 \ | |
3724 product(bool, DumpSharedSpaces, false, \ | |
3725 "Special mode: JVM reads a class list, loads classes, builds " \ | |
3726 "shared spaces, and dumps the shared spaces to a file to be " \ | |
3727 "used in future JVM runs.") \ | |
3728 \ | |
3729 product(bool, PrintSharedSpaces, false, \ | |
3730 "Print usage of shared spaces") \ | |
3731 \ | |
3732 product(uintx, SharedDummyBlockSize, 512*M, \ | |
3733 "Size of dummy block used to shift heap addresses (in bytes)") \ | |
3734 \ | |
1875 | 3735 product(uintx, SharedReadWriteSize, NOT_LP64(12*M) LP64_ONLY(13*M), \ |
0 | 3736 "Size of read-write space in permanent generation (in bytes)") \ |
3737 \ | |
910
10d8c0d0d60e
6867645: java -Xshare:dump failed - read only space too small
jcoomes
parents:
909
diff
changeset
|
3738 product(uintx, SharedReadOnlySize, 10*M, \ |
0 | 3739 "Size of read-only space in permanent generation (in bytes)") \ |
3740 \ | |
2242
6e70f1bb7f6f
7019557: SharedMiscDataSize too small for 64-bit fastdebug JVM
coleenp
parents:
2204
diff
changeset
|
3741 product(uintx, SharedMiscDataSize, NOT_LP64(4*M) LP64_ONLY(5*M), \ |
0 | 3742 "Size of the shared data area adjacent to the heap (in bytes)") \ |
3743 \ | |
3744 product(uintx, SharedMiscCodeSize, 4*M, \ | |
3745 "Size of the shared code area adjacent to the heap (in bytes)") \ | |
3746 \ | |
3747 diagnostic(bool, SharedOptimizeColdStart, true, \ | |
3748 "At dump time, order shared objects to achieve better " \ | |
3749 "cold startup time.") \ | |
3750 \ | |
3751 develop(intx, SharedOptimizeColdStartPolicy, 2, \ | |
3752 "Reordering policy for SharedOptimizeColdStart " \ | |
3753 "0=favor classload-time locality, 1=balanced, " \ | |
3754 "2=favor runtime locality") \ | |
3755 \ | |
3756 diagnostic(bool, SharedSkipVerify, false, \ | |
3757 "Skip assert() and verify() which page-in unwanted shared " \ | |
3758 "objects. ") \ | |
3759 \ | |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3760 diagnostic(bool, EnableInvokeDynamic, true, \ |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3761 "support JSR 292 (method handles, invokedynamic, " \ |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3762 "anonymous classes") \ |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3763 \ |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
406
diff
changeset
|
3764 product(bool, AnonymousClasses, false, \ |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3765 "support sun.misc.Unsafe.defineAnonymousClass (deprecated)") \ |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
406
diff
changeset
|
3766 \ |
905
bd2b1f617a4e
6868487: EnableInvokeDynamic and EnableMethodHandles should not be visible flags in JDK6 or JDK7
jrose
parents:
885
diff
changeset
|
3767 experimental(bool, EnableMethodHandles, false, \ |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3768 "support method handles (deprecated)") \ |
710 | 3769 \ |
3770 diagnostic(intx, MethodHandlePushLimit, 3, \ | |
3771 "number of additional stack slots a method handle may push") \ | |
3772 \ | |
3757
f8c9417e3571
7052219: JSR 292: Crash in ~BufferBlob::MethodHandles adapters
never
parents:
3745
diff
changeset
|
3773 diagnostic(bool, PrintMethodHandleStubs, false, \ |
f8c9417e3571
7052219: JSR 292: Crash in ~BufferBlob::MethodHandles adapters
never
parents:
3745
diff
changeset
|
3774 "Print generated stub code for method handles") \ |
f8c9417e3571
7052219: JSR 292: Crash in ~BufferBlob::MethodHandles adapters
never
parents:
3745
diff
changeset
|
3775 \ |
710 | 3776 develop(bool, TraceMethodHandles, false, \ |
3777 "trace internal method handle operations") \ | |
3778 \ | |
3779 diagnostic(bool, VerifyMethodHandles, trueInDebug, \ | |
3780 "perform extra checks when constructing method handles") \ | |
3781 \ | |
3782 diagnostic(bool, OptimizeMethodHandles, true, \ | |
3783 "when constructing method handles, try to improve them") \ | |
3784 \ | |
3388
a80577f854f9
7045513: JSR 292 inlining causes crashes in methodHandleWalk.cpp
never
parents:
3384
diff
changeset
|
3785 develop(bool, StressMethodHandleWalk, false, \ |
a80577f854f9
7045513: JSR 292 inlining causes crashes in methodHandleWalk.cpp
never
parents:
3384
diff
changeset
|
3786 "Process all method handles with MethodHandleWalk") \ |
a80577f854f9
7045513: JSR 292 inlining causes crashes in methodHandleWalk.cpp
never
parents:
3384
diff
changeset
|
3787 \ |
3363
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3284
diff
changeset
|
3788 diagnostic(bool, UseRicochetFrames, true, \ |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3284
diff
changeset
|
3789 "use ricochet stack frames for method handle combination, " \ |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3284
diff
changeset
|
3790 "if the platform supports them") \ |
167b70ff3abc
6939861: JVM should handle more conversion operations
never
parents:
3284
diff
changeset
|
3791 \ |
1173
73b22f919c34
6912065: final fields in objects need to support inlining optimizations for JSR 292
jrose
parents:
1157
diff
changeset
|
3792 experimental(bool, TrustFinalNonStaticFields, false, \ |
73b22f919c34
6912065: final fields in objects need to support inlining optimizations for JSR 292
jrose
parents:
1157
diff
changeset
|
3793 "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
|
3794 \ |
3745
a93146d0e4be
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3795 experimental(bool, AllowInvokeGeneric, false, \ |
2356
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3796 "accept MethodHandle.invoke and MethodHandle.invokeGeneric " \ |
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3797 "as equivalent methods") \ |
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3798 \ |
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3799 develop(bool, TraceInvokeDynamic, false, \ |
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3800 "trace internal invoke dynamic operations") \ |
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3801 \ |
0 | 3802 diagnostic(bool, PauseAtStartup, false, \ |
3803 "Causes the VM to pause at startup time and wait for the pause " \ | |
3804 "file to be removed (default: ./vm.paused.<pid>)") \ | |
3805 \ | |
3806 diagnostic(ccstr, PauseAtStartupFile, NULL, \ | |
3807 "The file to create and for whose removal to await when pausing " \ | |
3808 "at startup. (default: ./vm.paused.<pid>)") \ | |
3809 \ | |
2302
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3810 diagnostic(bool, PauseAtExit, false, \ |
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3811 "Pause and wait for keypress on exit if a debugger is attached") \ |
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3812 \ |
0 | 3813 product(bool, ExtendedDTraceProbes, false, \ |
3814 "Enable performance-impacting dtrace probes") \ | |
3815 \ | |
3816 product(bool, DTraceMethodProbes, false, \ | |
3817 "Enable dtrace probes for method-entry and method-exit") \ | |
3818 \ | |
3819 product(bool, DTraceAllocProbes, false, \ | |
3820 "Enable dtrace probes for object allocation") \ | |
3821 \ | |
3822 product(bool, DTraceMonitorProbes, false, \ | |
3823 "Enable dtrace probes for monitor events") \ | |
3824 \ | |
3825 product(bool, RelaxAccessControlCheck, false, \ | |
3826 "Relax the access control checks in the verifier") \ | |
3827 \ | |
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3828 diagnostic(bool, PrintDTraceDOF, false, \ |
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3829 "Print the DTrace DOF passed to the system for JSDT probes") \ |
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3830 \ |
2378 | 3831 product(uintx, StringTableSize, 1009, \ |
3832 "Number of buckets in the interned String table") \ | |
3833 \ | |
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3834 product(bool, UseVMInterruptibleIO, false, \ |
0 | 3835 "(Unstable, Solaris-specific) Thread interrupt before or with " \ |
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3836 "EINTR for I/O operations results in OS_INTRPT. The default value"\ |
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3837 " of this flag is true for JDK 6 and earliers") |
0 | 3838 |
3839 /* | |
3840 * Macros for factoring of globals | |
3841 */ | |
3842 | |
3843 // Interface macros | |
3844 #define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; | |
3845 #define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name; | |
3846 #define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name; | |
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3847 #define DECLARE_EXPERIMENTAL_FLAG(type, name, value, doc) extern "C" type name; |
0 | 3848 #define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name; |
3849 #define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name; | |
3850 #ifdef PRODUCT | |
3851 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) const type name = value; | |
3852 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) const type name = pd_##name; | |
3853 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) | |
3854 #else | |
3855 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name; | |
3856 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name; | |
3857 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name; | |
3858 #endif | |
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3859 // Special LP64 flags, product only needed for now. |
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3860 #ifdef _LP64 |
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3861 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; |
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3862 #else |
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3863 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) const type name = value; |
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3864 #endif // _LP64 |
0 | 3865 |
3866 // Implementation macros | |
3867 #define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value; | |
3868 #define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name; | |
3869 #define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value; | |
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3870 #define MATERIALIZE_EXPERIMENTAL_FLAG(type, name, value, doc) type name = value; |
0 | 3871 #define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value; |
3872 #define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value; | |
3873 #ifdef PRODUCT | |
3874 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) /* flag name is constant */ | |
3875 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) /* flag name is constant */ | |
3876 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) | |
3877 #else | |
3878 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value; | |
3879 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name; | |
3880 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value; | |
3881 #endif | |
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3882 #ifdef _LP64 |
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3883 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) type name = value; |
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3884 #else |
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3885 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) /* flag is constant */ |
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3886 #endif // _LP64 |
0 | 3887 |
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3888 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 | 3889 |
3890 RUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG) | |
1972 | 3891 |
3892 #endif // SHARE_VM_RUNTIME_GLOBALS_HPP |