Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/globals.hpp @ 6646:c38f13903fdf
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/ just before the NPG (no perm gen) changeset
author | Doug Simon <doug.simon@oracle.com> |
---|---|
date | Mon, 29 Oct 2012 21:10:04 +0100 |
parents | 957c266d8bc5 a5dd6e3ef9f3 |
children | e522a00b91aa 8c5333c80cfd |
rev | line source |
---|---|
0 | 1 /* |
4868 | 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1544
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1544
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1544
diff
changeset
|
21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_RUNTIME_GLOBALS_HPP |
26 #define SHARE_VM_RUNTIME_GLOBALS_HPP | |
27 | |
28 #include "utilities/debug.hpp" | |
4868 | 29 |
30 // use this for flags that are true per default in the tiered build | |
31 // but false in non-tiered builds, and vice versa | |
32 #ifdef TIERED | |
33 #define trueInTiered true | |
34 #define falseInTiered false | |
35 #else | |
36 #define trueInTiered false | |
37 #define falseInTiered true | |
38 #endif | |
39 | |
1972 | 40 #ifdef TARGET_ARCH_x86 |
41 # include "globals_x86.hpp" | |
42 #endif | |
43 #ifdef TARGET_ARCH_sparc | |
44 # include "globals_sparc.hpp" | |
45 #endif | |
46 #ifdef TARGET_ARCH_zero | |
47 # include "globals_zero.hpp" | |
48 #endif | |
2192
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
49 #ifdef TARGET_ARCH_arm |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
50 # include "globals_arm.hpp" |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
51 #endif |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
52 #ifdef TARGET_ARCH_ppc |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
53 # include "globals_ppc.hpp" |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
54 #endif |
1972 | 55 #ifdef TARGET_OS_FAMILY_linux |
56 # include "globals_linux.hpp" | |
57 #endif | |
58 #ifdef TARGET_OS_FAMILY_solaris | |
59 # include "globals_solaris.hpp" | |
60 #endif | |
61 #ifdef TARGET_OS_FAMILY_windows | |
62 # include "globals_windows.hpp" | |
63 #endif | |
3960 | 64 #ifdef TARGET_OS_FAMILY_bsd |
65 # include "globals_bsd.hpp" | |
66 #endif | |
1972 | 67 #ifdef TARGET_OS_ARCH_linux_x86 |
68 # include "globals_linux_x86.hpp" | |
69 #endif | |
70 #ifdef TARGET_OS_ARCH_linux_sparc | |
71 # include "globals_linux_sparc.hpp" | |
72 #endif | |
73 #ifdef TARGET_OS_ARCH_linux_zero | |
74 # include "globals_linux_zero.hpp" | |
75 #endif | |
76 #ifdef TARGET_OS_ARCH_solaris_x86 | |
77 # include "globals_solaris_x86.hpp" | |
78 #endif | |
79 #ifdef TARGET_OS_ARCH_solaris_sparc | |
80 # include "globals_solaris_sparc.hpp" | |
81 #endif | |
82 #ifdef TARGET_OS_ARCH_windows_x86 | |
83 # include "globals_windows_x86.hpp" | |
84 #endif | |
2192
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
85 #ifdef TARGET_OS_ARCH_linux_arm |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
86 # include "globals_linux_arm.hpp" |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
87 #endif |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
88 #ifdef TARGET_OS_ARCH_linux_ppc |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
89 # include "globals_linux_ppc.hpp" |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
90 #endif |
3960 | 91 #ifdef TARGET_OS_ARCH_bsd_x86 |
92 # include "globals_bsd_x86.hpp" | |
93 #endif | |
94 #ifdef TARGET_OS_ARCH_bsd_zero | |
95 # include "globals_bsd_zero.hpp" | |
96 #endif | |
1972 | 97 #ifdef COMPILER1 |
98 #ifdef TARGET_ARCH_x86 | |
99 # include "c1_globals_x86.hpp" | |
100 #endif | |
101 #ifdef TARGET_ARCH_sparc | |
102 # include "c1_globals_sparc.hpp" | |
103 #endif | |
2192
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
104 #ifdef TARGET_ARCH_arm |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
105 # include "c1_globals_arm.hpp" |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
106 #endif |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
107 #ifdef TARGET_ARCH_ppc |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
108 # include "c1_globals_ppc.hpp" |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
109 #endif |
1972 | 110 #ifdef TARGET_OS_FAMILY_linux |
111 # include "c1_globals_linux.hpp" | |
112 #endif | |
113 #ifdef TARGET_OS_FAMILY_solaris | |
114 # include "c1_globals_solaris.hpp" | |
115 #endif | |
116 #ifdef TARGET_OS_FAMILY_windows | |
117 # include "c1_globals_windows.hpp" | |
118 #endif | |
3960 | 119 #ifdef TARGET_OS_FAMILY_bsd |
120 # include "c1_globals_bsd.hpp" | |
121 #endif | |
1972 | 122 #endif |
123 #ifdef COMPILER2 | |
124 #ifdef TARGET_ARCH_x86 | |
125 # include "c2_globals_x86.hpp" | |
126 #endif | |
127 #ifdef TARGET_ARCH_sparc | |
128 # include "c2_globals_sparc.hpp" | |
129 #endif | |
2192
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
130 #ifdef TARGET_ARCH_arm |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
131 # include "c2_globals_arm.hpp" |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
132 #endif |
1972 | 133 #ifdef TARGET_OS_FAMILY_linux |
134 # include "c2_globals_linux.hpp" | |
135 #endif | |
136 #ifdef TARGET_OS_FAMILY_solaris | |
137 # include "c2_globals_solaris.hpp" | |
138 #endif | |
139 #ifdef TARGET_OS_FAMILY_windows | |
140 # include "c2_globals_windows.hpp" | |
141 #endif | |
3960 | 142 #ifdef TARGET_OS_FAMILY_bsd |
143 # include "c2_globals_bsd.hpp" | |
144 #endif | |
1972 | 145 #endif |
146 #ifdef SHARK | |
147 #ifdef TARGET_ARCH_zero | |
148 # include "shark_globals_zero.hpp" | |
149 #endif | |
150 #endif | |
151 | |
1692 | 152 #if !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK) |
0 | 153 define_pd_global(bool, BackgroundCompilation, false); |
154 define_pd_global(bool, UseTLAB, false); | |
155 define_pd_global(bool, CICompileOSR, false); | |
156 define_pd_global(bool, UseTypeProfile, false); | |
157 define_pd_global(bool, UseOnStackReplacement, false); | |
158 define_pd_global(bool, InlineIntrinsics, false); | |
159 define_pd_global(bool, PreferInterpreterNativeStubs, true); | |
160 define_pd_global(bool, ProfileInterpreter, false); | |
161 define_pd_global(bool, ProfileTraps, false); | |
162 define_pd_global(bool, TieredCompilation, false); | |
163 | |
164 define_pd_global(intx, CompileThreshold, 0); | |
165 define_pd_global(intx, BackEdgeThreshold, 0); | |
166 | |
167 define_pd_global(intx, OnStackReplacePercentage, 0); | |
168 define_pd_global(bool, ResizeTLAB, false); | |
169 define_pd_global(intx, FreqInlineSize, 0); | |
1064 | 170 define_pd_global(intx, InlineSmallCode, 0); |
0 | 171 define_pd_global(intx, NewSizeThreadIncrease, 4*K); |
172 define_pd_global(intx, InlineClassNatives, true); | |
173 define_pd_global(intx, InlineUnsafeOps, true); | |
174 define_pd_global(intx, InitialCodeCacheSize, 160*K); | |
175 define_pd_global(intx, ReservedCodeCacheSize, 32*M); | |
176 define_pd_global(intx, CodeCacheExpansionSize, 32*K); | |
177 define_pd_global(intx, CodeCacheMinBlockLength, 1); | |
178 define_pd_global(uintx,PermSize, ScaleForWordSize(4*M)); | |
179 define_pd_global(uintx,MaxPermSize, ScaleForWordSize(64*M)); | |
180 define_pd_global(bool, NeverActAsServerClassMachine, true); | |
1064 | 181 define_pd_global(uint64_t,MaxRAM, 1ULL*G); |
0 | 182 #define CI_COMPILER_COUNT 0 |
183 #else | |
184 | |
185 #ifdef COMPILER2 | |
186 #define CI_COMPILER_COUNT 2 | |
187 #else | |
188 #define CI_COMPILER_COUNT 1 | |
189 #endif // COMPILER2 | |
190 | |
191 #endif // no compilers | |
192 | |
193 // string type aliases used only in this file | |
194 typedef const char* ccstr; | |
195 typedef const char* ccstrlist; // represents string arguments which accumulate | |
196 | |
197 enum FlagValueOrigin { | |
198 DEFAULT = 0, | |
199 COMMAND_LINE = 1, | |
200 ENVIRON_VAR = 2, | |
201 CONFIG_FILE = 3, | |
202 MANAGEMENT = 4, | |
203 ERGONOMIC = 5, | |
204 ATTACH_ON_DEMAND = 6, | |
205 INTERNAL = 99 | |
206 }; | |
207 | |
208 struct Flag { | |
209 const char *type; | |
210 const char *name; | |
211 void* addr; | |
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1749
diff
changeset
|
212 |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1749
diff
changeset
|
213 NOT_PRODUCT(const char *doc;) |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1749
diff
changeset
|
214 |
0 | 215 const char *kind; |
216 FlagValueOrigin origin; | |
217 | |
218 // points to all Flags static array | |
219 static Flag *flags; | |
220 | |
221 // number of flags | |
222 static size_t numFlags; | |
223 | |
5947
80fe40862b02
7144328: Improper commandlines for -XX:+-UnlockCommercialFeatures require proper warning/error messages
jmelvin
parents:
5915
diff
changeset
|
224 static Flag* find_flag(char* name, size_t length, bool allow_locked = false); |
0 | 225 |
226 bool is_bool() const { return strcmp(type, "bool") == 0; } | |
227 bool get_bool() const { return *((bool*) addr); } | |
228 void set_bool(bool value) { *((bool*) addr) = value; } | |
229 | |
230 bool is_intx() const { return strcmp(type, "intx") == 0; } | |
231 intx get_intx() const { return *((intx*) addr); } | |
232 void set_intx(intx value) { *((intx*) addr) = value; } | |
233 | |
234 bool is_uintx() const { return strcmp(type, "uintx") == 0; } | |
235 uintx get_uintx() const { return *((uintx*) addr); } | |
236 void set_uintx(uintx value) { *((uintx*) addr) = value; } | |
237 | |
1064 | 238 bool is_uint64_t() const { return strcmp(type, "uint64_t") == 0; } |
239 uint64_t get_uint64_t() const { return *((uint64_t*) addr); } | |
240 void set_uint64_t(uint64_t value) { *((uint64_t*) addr) = value; } | |
241 | |
0 | 242 bool is_double() const { return strcmp(type, "double") == 0; } |
243 double get_double() const { return *((double*) addr); } | |
244 void set_double(double value) { *((double*) addr) = value; } | |
245 | |
246 bool is_ccstr() const { return strcmp(type, "ccstr") == 0 || strcmp(type, "ccstrlist") == 0; } | |
247 bool ccstr_accumulates() const { return strcmp(type, "ccstrlist") == 0; } | |
248 ccstr get_ccstr() const { return *((ccstr*) addr); } | |
249 void set_ccstr(ccstr value) { *((ccstr*) addr) = value; } | |
250 | |
251 bool is_unlocker() const; | |
252 bool is_unlocked() const; | |
253 bool is_writeable() const; | |
254 bool is_external() const; | |
255 | |
4107
cd00eaeebef6
7117389: Add a framework for vendor-specific command line switch extensions to Hotspot
phh
parents:
4088
diff
changeset
|
256 bool is_unlocker_ext() const; |
cd00eaeebef6
7117389: Add a framework for vendor-specific command line switch extensions to Hotspot
phh
parents:
4088
diff
changeset
|
257 bool is_unlocked_ext() const; |
4715
6c995c08526c
7122880: Extend vendor-specific command interface to include manageable switches
phh
parents:
4125
diff
changeset
|
258 bool is_writeable_ext() const; |
6c995c08526c
7122880: Extend vendor-specific command interface to include manageable switches
phh
parents:
4125
diff
changeset
|
259 bool is_external_ext() const; |
4107
cd00eaeebef6
7117389: Add a framework for vendor-specific command line switch extensions to Hotspot
phh
parents:
4088
diff
changeset
|
260 |
5947
80fe40862b02
7144328: Improper commandlines for -XX:+-UnlockCommercialFeatures require proper warning/error messages
jmelvin
parents:
5915
diff
changeset
|
261 void get_locked_message(char*, int) const; |
80fe40862b02
7144328: Improper commandlines for -XX:+-UnlockCommercialFeatures require proper warning/error messages
jmelvin
parents:
5915
diff
changeset
|
262 void get_locked_message_ext(char*, int) const; |
80fe40862b02
7144328: Improper commandlines for -XX:+-UnlockCommercialFeatures require proper warning/error messages
jmelvin
parents:
5915
diff
changeset
|
263 |
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1749
diff
changeset
|
264 void print_on(outputStream* st, bool withComments = false ); |
0 | 265 void print_as_flag(outputStream* st); |
266 }; | |
267 | |
268 // debug flags control various aspects of the VM and are global accessible | |
269 | |
270 // use FlagSetting to temporarily change some debug flag | |
271 // e.g. FlagSetting fs(DebugThisAndThat, true); | |
272 // restored to previous value upon leaving scope | |
273 class FlagSetting { | |
274 bool val; | |
275 bool* flag; | |
276 public: | |
277 FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; } | |
278 ~FlagSetting() { *flag = val; } | |
279 }; | |
280 | |
281 | |
282 class CounterSetting { | |
283 intx* counter; | |
284 public: | |
285 CounterSetting(intx* cnt) { counter = cnt; (*counter)++; } | |
286 ~CounterSetting() { (*counter)--; } | |
287 }; | |
288 | |
289 | |
290 class IntFlagSetting { | |
291 intx val; | |
292 intx* flag; | |
293 public: | |
294 IntFlagSetting(intx& fl, intx newValue) { flag = &fl; val = fl; fl = newValue; } | |
295 ~IntFlagSetting() { *flag = val; } | |
296 }; | |
297 | |
298 | |
299 class DoubleFlagSetting { | |
300 double val; | |
301 double* flag; | |
302 public: | |
303 DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; } | |
304 ~DoubleFlagSetting() { *flag = val; } | |
305 }; | |
306 | |
307 | |
308 class CommandLineFlags { | |
309 public: | |
310 static bool boolAt(char* name, size_t len, bool* value); | |
311 static bool boolAt(char* name, bool* value) { return boolAt(name, strlen(name), value); } | |
312 static bool boolAtPut(char* name, size_t len, bool* value, FlagValueOrigin origin); | |
313 static bool boolAtPut(char* name, bool* value, FlagValueOrigin origin) { return boolAtPut(name, strlen(name), value, origin); } | |
314 | |
315 static bool intxAt(char* name, size_t len, intx* value); | |
316 static bool intxAt(char* name, intx* value) { return intxAt(name, strlen(name), value); } | |
317 static bool intxAtPut(char* name, size_t len, intx* value, FlagValueOrigin origin); | |
318 static bool intxAtPut(char* name, intx* value, FlagValueOrigin origin) { return intxAtPut(name, strlen(name), value, origin); } | |
319 | |
320 static bool uintxAt(char* name, size_t len, uintx* value); | |
321 static bool uintxAt(char* name, uintx* value) { return uintxAt(name, strlen(name), value); } | |
322 static bool uintxAtPut(char* name, size_t len, uintx* value, FlagValueOrigin origin); | |
323 static bool uintxAtPut(char* name, uintx* value, FlagValueOrigin origin) { return uintxAtPut(name, strlen(name), value, origin); } | |
324 | |
1064 | 325 static bool uint64_tAt(char* name, size_t len, uint64_t* value); |
326 static bool uint64_tAt(char* name, uint64_t* value) { return uint64_tAt(name, strlen(name), value); } | |
327 static bool uint64_tAtPut(char* name, size_t len, uint64_t* value, FlagValueOrigin origin); | |
328 static bool uint64_tAtPut(char* name, uint64_t* value, FlagValueOrigin origin) { return uint64_tAtPut(name, strlen(name), value, origin); } | |
329 | |
0 | 330 static bool doubleAt(char* name, size_t len, double* value); |
331 static bool doubleAt(char* name, double* value) { return doubleAt(name, strlen(name), value); } | |
332 static bool doubleAtPut(char* name, size_t len, double* value, FlagValueOrigin origin); | |
333 static bool doubleAtPut(char* name, double* value, FlagValueOrigin origin) { return doubleAtPut(name, strlen(name), value, origin); } | |
334 | |
335 static bool ccstrAt(char* name, size_t len, ccstr* value); | |
336 static bool ccstrAt(char* name, ccstr* value) { return ccstrAt(name, strlen(name), value); } | |
337 static bool ccstrAtPut(char* name, size_t len, ccstr* value, FlagValueOrigin origin); | |
338 static bool ccstrAtPut(char* name, ccstr* value, FlagValueOrigin origin) { return ccstrAtPut(name, strlen(name), value, origin); } | |
339 | |
340 // Returns false if name is not a command line flag. | |
341 static bool wasSetOnCmdline(const char* name, bool* value); | |
4773 | 342 static void printSetFlags(outputStream* out); |
0 | 343 |
4773 | 344 static void printFlags(outputStream* out, bool withComments); |
0 | 345 |
346 static void verify() PRODUCT_RETURN; | |
347 }; | |
348 | |
349 // use this for flags that are true by default in the debug version but | |
350 // false in the optimized version, and vice versa | |
351 #ifdef ASSERT | |
352 #define trueInDebug true | |
353 #define falseInDebug false | |
354 #else | |
355 #define trueInDebug false | |
356 #define falseInDebug true | |
357 #endif | |
358 | |
359 // use this for flags that are true per default in the product build | |
360 // but false in development builds, and vice versa | |
361 #ifdef PRODUCT | |
362 #define trueInProduct true | |
363 #define falseInProduct false | |
364 #else | |
365 #define trueInProduct false | |
366 #define falseInProduct true | |
367 #endif | |
368 | |
3797
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3780
diff
changeset
|
369 #ifdef JAVASE_EMBEDDED |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3780
diff
changeset
|
370 #define falseInEmbedded false |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3780
diff
changeset
|
371 #else |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3780
diff
changeset
|
372 #define falseInEmbedded true |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3780
diff
changeset
|
373 #endif |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3780
diff
changeset
|
374 |
0 | 375 // develop flags are settable / visible only during development and are constant in the PRODUCT version |
376 // product flags are always settable / visible | |
377 // notproduct flags are settable / visible only during development and are not declared in the PRODUCT version | |
378 | |
379 // A flag must be declared with one of the following types: | |
380 // bool, intx, uintx, ccstr. | |
381 // The type "ccstr" is an alias for "const char*" and is used | |
382 // only in this file, because the macrology requires single-token type names. | |
383 | |
384 // Note: Diagnostic options not meant for VM tuning or for product modes. | |
385 // They are to be used for VM quality assurance or field diagnosis | |
386 // of VM bugs. They are hidden so that users will not be encouraged to | |
387 // try them as if they were VM ordinary execution options. However, they | |
388 // are available in the product version of the VM. Under instruction | |
389 // from support engineers, VM customers can turn them on to collect | |
390 // diagnostic information about VM problems. To use a VM diagnostic | |
391 // option, you must first specify +UnlockDiagnosticVMOptions. | |
392 // (This master switch also affects the behavior of -Xprintflags.) | |
350
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
393 // |
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
394 // experimental flags are in support of features that are not |
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
395 // part of the officially supported product, but are available |
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
396 // for experimenting with. They could, for example, be performance |
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
397 // features that may not have undergone full or rigorous QA, but which may |
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
398 // help performance in some cases and released for experimentation |
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
399 // by the community of users and developers. This flag also allows one to |
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
400 // be able to build a fully supported product that nonetheless also |
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
401 // ships with some unsupported, lightly tested, experimental features. |
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
402 // Like the UnlockDiagnosticVMOptions flag above, there is a corresponding |
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
403 // UnlockExperimentalVMOptions flag, which allows the control and |
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
404 // modification of the experimental flags. |
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
405 // |
1837
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1836
diff
changeset
|
406 // Nota bene: neither diagnostic nor experimental options should be used casually, |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1836
diff
changeset
|
407 // and they are not supported on production loads, except under explicit |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1836
diff
changeset
|
408 // direction from support engineers. |
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1836
diff
changeset
|
409 // |
0 | 410 // manageable flags are writeable external product flags. |
411 // They are dynamically writeable through the JDK management interface | |
412 // (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole. | |
413 // These flags are external exported interface (see CCC). The list of | |
414 // manageable flags can be queried programmatically through the management | |
415 // interface. | |
416 // | |
417 // A flag can be made as "manageable" only if | |
418 // - the flag is defined in a CCC as an external exported interface. | |
419 // - the VM implementation supports dynamic setting of the flag. | |
420 // This implies that the VM must *always* query the flag variable | |
421 // and not reuse state related to the flag state at any given time. | |
422 // - you want the flag to be queried programmatically by the customers. | |
423 // | |
424 // product_rw flags are writeable internal product flags. | |
425 // They are like "manageable" flags but for internal/private use. | |
426 // The list of product_rw flags are internal/private flags which | |
427 // may be changed/removed in a future release. It can be set | |
428 // through the management interface to get/set value | |
429 // when the name of flag is supplied. | |
430 // | |
431 // A flag can be made as "product_rw" only if | |
432 // - the VM implementation supports dynamic setting of the flag. | |
433 // This implies that the VM must *always* query the flag variable | |
434 // and not reuse state related to the flag state at any given time. | |
435 // | |
436 // Note that when there is a need to support develop flags to be writeable, | |
437 // it can be done in the same way as product_rw. | |
438 | |
350
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
439 #define RUNTIME_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw, lp64_product) \ |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
440 \ |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
441 lp64_product(bool, UseCompressedOops, false, \ |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
442 "Use 32-bit object references in 64-bit VM. " \ |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
443 "lp64_product means flag is always constant in 32 bit VM") \ |
0 | 444 \ |
642
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
615
diff
changeset
|
445 notproduct(bool, CheckCompressedOops, true, \ |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
615
diff
changeset
|
446 "generate checks in encoding/decoding code in debug VM") \ |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
615
diff
changeset
|
447 \ |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
615
diff
changeset
|
448 product_pd(uintx, HeapBaseMinAddress, \ |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
615
diff
changeset
|
449 "OS specific low limit for heap base address") \ |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
615
diff
changeset
|
450 \ |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
615
diff
changeset
|
451 diagnostic(bool, PrintCompressedOopsMode, false, \ |
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
615
diff
changeset
|
452 "Print compressed oops base address and encoding mode") \ |
325
93befa083681
6741004: UseLargePages + UseCompressedOops breaks implicit null checking guard page
coleenp
parents:
300
diff
changeset
|
453 \ |
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1544
diff
changeset
|
454 lp64_product(intx, ObjectAlignmentInBytes, 8, \ |
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1544
diff
changeset
|
455 "Default object alignment in bytes, 8 is minimum") \ |
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1544
diff
changeset
|
456 \ |
0 | 457 /* UseMembar is theoretically a temp flag used for memory barrier \ |
458 * removal testing. It was supposed to be removed before FCS but has \ | |
459 * been re-added (see 6401008) */ \ | |
1868
3dc12ef8735e
6989297: Integrate additional portability improvements
bobv
parents:
1796
diff
changeset
|
460 product_pd(bool, UseMembar, \ |
0 | 461 "(Unstable) Issues membars on thread state transitions") \ |
462 \ | |
2192
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
463 /* Temp PPC Flag to allow disabling the use of lwsync on ppc platforms \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
464 * that don't support it. This will be replaced by processor detection \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
465 * logic. \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
466 */ \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
467 product(bool, UsePPCLWSYNC, true, \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
468 "Use lwsync instruction if true, else use slower sync") \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
469 \ |
3799
48048b59a551
7061204: clean the chunk table synchronously in embedded builds
jcoomes
parents:
3797
diff
changeset
|
470 develop(bool, CleanChunkPoolAsync, falseInEmbedded, \ |
48048b59a551
7061204: clean the chunk table synchronously in embedded builds
jcoomes
parents:
3797
diff
changeset
|
471 "Whether to clean the chunk pool asynchronously") \ |
48048b59a551
7061204: clean the chunk table synchronously in embedded builds
jcoomes
parents:
3797
diff
changeset
|
472 \ |
2192
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
473 /* Temporary: See 6948537 */ \ |
1518
3bfae429e2cf
6948537: CMS: BOT walkers observe out-of-thin-air zeros on sun4v sparc/CMT
ysr
parents:
1490
diff
changeset
|
474 experimental(bool, UseMemSetInBOT, true, \ |
3bfae429e2cf
6948537: CMS: BOT walkers observe out-of-thin-air zeros on sun4v sparc/CMT
ysr
parents:
1490
diff
changeset
|
475 "(Unstable) uses memset in BOT updates in GC code") \ |
3bfae429e2cf
6948537: CMS: BOT walkers observe out-of-thin-air zeros on sun4v sparc/CMT
ysr
parents:
1490
diff
changeset
|
476 \ |
0 | 477 diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \ |
350
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
478 "Enable normal processing of flags relating to field diagnostics")\ |
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
479 \ |
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
480 experimental(bool, UnlockExperimentalVMOptions, false, \ |
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
481 "Enable normal processing of flags relating to experimental features")\ |
0 | 482 \ |
483 product(bool, JavaMonitorsInStackTrace, true, \ | |
484 "Print info. about Java monitor locks when the stacks are dumped")\ | |
485 \ | |
486 product_pd(bool, UseLargePages, \ | |
487 "Use large page memory") \ | |
488 \ | |
389
ee21eaa8ffe1
6660681: Incrementally reserve pages on win server 2003 for better large page affinity
jmasa
parents:
377
diff
changeset
|
489 product_pd(bool, UseLargePagesIndividualAllocation, \ |
ee21eaa8ffe1
6660681: Incrementally reserve pages on win server 2003 for better large page affinity
jmasa
parents:
377
diff
changeset
|
490 "Allocate large pages individually for better affinity") \ |
ee21eaa8ffe1
6660681: Incrementally reserve pages on win server 2003 for better large page affinity
jmasa
parents:
377
diff
changeset
|
491 \ |
ee21eaa8ffe1
6660681: Incrementally reserve pages on win server 2003 for better large page affinity
jmasa
parents:
377
diff
changeset
|
492 develop(bool, LargePagesIndividualAllocationInjectError, false, \ |
ee21eaa8ffe1
6660681: Incrementally reserve pages on win server 2003 for better large page affinity
jmasa
parents:
377
diff
changeset
|
493 "Fail large pages individual allocation") \ |
ee21eaa8ffe1
6660681: Incrementally reserve pages on win server 2003 for better large page affinity
jmasa
parents:
377
diff
changeset
|
494 \ |
0 | 495 develop(bool, TracePageSizes, false, \ |
496 "Trace page size selection and usage.") \ | |
497 \ | |
498 product(bool, UseNUMA, false, \ | |
499 "Use NUMA if available") \ | |
500 \ | |
3885 | 501 product(bool, UseNUMAInterleaving, false, \ |
502 "Interleave memory across NUMA nodes if available") \ | |
503 \ | |
504 product(uintx, NUMAInterleaveGranularity, 2*M, \ | |
505 "Granularity to use for NUMA interleaving on Windows OS") \ | |
506 \ | |
462
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
455
diff
changeset
|
507 product(bool, ForceNUMA, false, \ |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
455
diff
changeset
|
508 "Force NUMA optimizations on single-node/UMA systems") \ |
85f1b9537f70
6779436: NUMA allocator: libnuma expects certain size of the buffer in numa_node_to_cpus()
iveresov
parents:
455
diff
changeset
|
509 \ |
0 | 510 product(intx, NUMAChunkResizeWeight, 20, \ |
511 "Percentage (0-100) used to weight the current sample when " \ | |
512 "computing exponentially decaying average for " \ | |
513 "AdaptiveNUMAChunkSizing") \ | |
514 \ | |
515 product(intx, NUMASpaceResizeRate, 1*G, \ | |
516 "Do not reallocate more that this amount per collection") \ | |
517 \ | |
518 product(bool, UseAdaptiveNUMAChunkSizing, true, \ | |
519 "Enable adaptive chunk sizing for NUMA") \ | |
520 \ | |
521 product(bool, NUMAStats, false, \ | |
522 "Print NUMA stats in detailed heap information") \ | |
523 \ | |
524 product(intx, NUMAPageScanRate, 256, \ | |
525 "Maximum number of pages to include in the page scan procedure") \ | |
526 \ | |
527 product_pd(bool, NeedsDeoptSuspend, \ | |
528 "True for register window machines (sparc/ia64)") \ | |
529 \ | |
530 product(intx, UseSSE, 99, \ | |
531 "Highest supported SSE instructions set on x86/x64") \ | |
532 \ | |
533 product(uintx, LargePageSizeInBytes, 0, \ | |
534 "Large page size (0 to let VM choose the page size") \ | |
535 \ | |
536 product(uintx, LargePageHeapSizeThreshold, 128*M, \ | |
537 "Use large pages if max heap is at least this big") \ | |
538 \ | |
539 product(bool, ForceTimeHighResolution, false, \ | |
540 "Using high time resolution(For Win32 only)") \ | |
541 \ | |
542 develop(bool, TraceItables, false, \ | |
543 "Trace initialization and use of itables") \ | |
544 \ | |
545 develop(bool, TracePcPatching, false, \ | |
546 "Trace usage of frame::patch_pc") \ | |
547 \ | |
548 develop(bool, TraceJumps, false, \ | |
549 "Trace assembly jumps in thread ring buffer") \ | |
550 \ | |
551 develop(bool, TraceRelocator, false, \ | |
552 "Trace the bytecode relocator") \ | |
553 \ | |
554 develop(bool, TraceLongCompiles, false, \ | |
555 "Print out every time compilation is longer than " \ | |
556 "a given threashold") \ | |
557 \ | |
558 develop(bool, SafepointALot, false, \ | |
559 "Generates a lot of safepoints. Works with " \ | |
560 "GuaranteedSafepointInterval") \ | |
561 \ | |
562 product_pd(bool, BackgroundCompilation, \ | |
563 "A thread requesting compilation is not blocked during " \ | |
564 "compilation") \ | |
565 \ | |
566 product(bool, PrintVMQWaitTime, false, \ | |
567 "Prints out the waiting time in VM operation queue") \ | |
568 \ | |
569 develop(bool, NoYieldsInMicrolock, false, \ | |
570 "Disable yields in microlock") \ | |
571 \ | |
572 develop(bool, TraceOopMapGeneration, false, \ | |
573 "Shows oopmap generation") \ | |
574 \ | |
575 product(bool, MethodFlushing, true, \ | |
576 "Reclamation of zombie and not-entrant methods") \ | |
577 \ | |
578 develop(bool, VerifyStack, false, \ | |
579 "Verify stack of each thread when it is entering a runtime call") \ | |
580 \ | |
4059
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4039
diff
changeset
|
581 diagnostic(bool, ForceUnreachable, false, \ |
44ce519bc3d1
7104960: JSR 292: +VerifyMethodHandles in product JVM can overflow buffer
never
parents:
4039
diff
changeset
|
582 "Make all non code cache addresses to be unreachable with forcing use of 64bit literal fixups") \ |
0 | 583 \ |
584 notproduct(bool, StressDerivedPointers, false, \ | |
585 "Force scavenge when a derived pointers is detected on stack " \ | |
586 "after rtm call") \ | |
587 \ | |
588 develop(bool, TraceDerivedPointers, false, \ | |
589 "Trace traversal of derived pointers on stack") \ | |
590 \ | |
591 notproduct(bool, TraceCodeBlobStacks, false, \ | |
592 "Trace stack-walk of codeblobs") \ | |
593 \ | |
594 product(bool, PrintJNIResolving, false, \ | |
595 "Used to implement -v:jni") \ | |
596 \ | |
597 notproduct(bool, PrintRewrites, false, \ | |
598 "Print methods that are being rewritten") \ | |
599 \ | |
600 product(bool, UseInlineCaches, true, \ | |
601 "Use Inline Caches for virtual calls ") \ | |
602 \ | |
603 develop(bool, InlineArrayCopy, true, \ | |
604 "inline arraycopy native that is known to be part of " \ | |
605 "base library DLL") \ | |
606 \ | |
607 develop(bool, InlineObjectHash, true, \ | |
608 "inline Object::hashCode() native that is known to be part " \ | |
609 "of base library DLL") \ | |
610 \ | |
611 develop(bool, InlineNatives, true, \ | |
612 "inline natives that are known to be part of base library DLL") \ | |
613 \ | |
614 develop(bool, InlineMathNatives, true, \ | |
615 "inline SinD, CosD, etc.") \ | |
616 \ | |
617 develop(bool, InlineClassNatives, true, \ | |
618 "inline Class.isInstance, etc") \ | |
619 \ | |
5747
120820e30baa
added basic high-level interpreter support to HotSpot
Christian Haeubl <haeubl@ssw.jku.at>
parents:
5336
diff
changeset
|
620 product(ccstr, HighLevelInterpreterClass, NULL, \ |
120820e30baa
added basic high-level interpreter support to HotSpot
Christian Haeubl <haeubl@ssw.jku.at>
parents:
5336
diff
changeset
|
621 "fully qualified class name of the high-level interpreter") \ |
120820e30baa
added basic high-level interpreter support to HotSpot
Christian Haeubl <haeubl@ssw.jku.at>
parents:
5336
diff
changeset
|
622 \ |
120820e30baa
added basic high-level interpreter support to HotSpot
Christian Haeubl <haeubl@ssw.jku.at>
parents:
5336
diff
changeset
|
623 product(ccstr, HighLevelInterpreterArguments, NULL, \ |
120820e30baa
added basic high-level interpreter support to HotSpot
Christian Haeubl <haeubl@ssw.jku.at>
parents:
5336
diff
changeset
|
624 "arguments that are passed to the high-level interpreter") \ |
120820e30baa
added basic high-level interpreter support to HotSpot
Christian Haeubl <haeubl@ssw.jku.at>
parents:
5336
diff
changeset
|
625 \ |
120820e30baa
added basic high-level interpreter support to HotSpot
Christian Haeubl <haeubl@ssw.jku.at>
parents:
5336
diff
changeset
|
626 notproduct(bool, PrintHighLevelInterpreterVMTransitions, false, \ |
120820e30baa
added basic high-level interpreter support to HotSpot
Christian Haeubl <haeubl@ssw.jku.at>
parents:
5336
diff
changeset
|
627 "print transitions between VM and high-level interpreter") \ |
120820e30baa
added basic high-level interpreter support to HotSpot
Christian Haeubl <haeubl@ssw.jku.at>
parents:
5336
diff
changeset
|
628 \ |
0 | 629 develop(bool, InlineThreadNatives, true, \ |
630 "inline Thread.currentThread, etc") \ | |
631 \ | |
632 develop(bool, InlineUnsafeOps, true, \ | |
633 "inline memory ops (native methods) from sun.misc.Unsafe") \ | |
634 \ | |
4873
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
635 product(bool, CriticalJNINatives, true, \ |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
636 "check for critical JNI entry points") \ |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
637 \ |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
638 notproduct(bool, StressCriticalJNINatives, false, \ |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
639 "Exercise register saving code in critical natives") \ |
0382d2b469b2
7013347: allow crypto functions to be called inline to enhance performance
never
parents:
4872
diff
changeset
|
640 \ |
681 | 641 product(bool, UseSSE42Intrinsics, false, \ |
642 "SSE4.2 versions of intrinsics") \ | |
643 \ | |
0 | 644 develop(bool, TraceCallFixup, false, \ |
645 "traces all call fixups") \ | |
646 \ | |
4688
f761948a7cd5
Made DeoptimizeALot flag available in product builds (to make testing with that flag faster).
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
4668
diff
changeset
|
647 product(bool, DeoptimizeALot, false, \ |
0 | 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 \ | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2125
diff
changeset
|
659 product(bool, UnlinkSymbolsALot, false, \ |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2125
diff
changeset
|
660 "unlink unreferenced symbols from the symbol table at safepoints")\ |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2125
diff
changeset
|
661 \ |
0 | 662 notproduct(bool, WalkStackALot, false, \ |
663 "trace stack (no print) at every exit from the runtime system") \ | |
664 \ | |
4006 | 665 product(bool, Debugging, false, \ |
0 | 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 \ | |
4872
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4868
diff
changeset
|
715 diagnostic(bool, LogEvents, true, \ |
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4868
diff
changeset
|
716 "Enable the various ring buffer event logs") \ |
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4868
diff
changeset
|
717 \ |
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4868
diff
changeset
|
718 diagnostic(intx, LogEventsBufferEntries, 10, \ |
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4868
diff
changeset
|
719 "Enable the various ring buffer event logs") \ |
0 | 720 \ |
721 product(bool, BytecodeVerificationRemote, true, \ | |
722 "Enables the Java bytecode verifier for remote classes") \ | |
723 \ | |
724 product(bool, BytecodeVerificationLocal, false, \ | |
725 "Enables the Java bytecode verifier for local classes") \ | |
726 \ | |
727 develop(bool, ForceFloatExceptions, trueInDebug, \ | |
728 "Force exceptions on FP stack under/overflow") \ | |
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 \ | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1660
diff
changeset
|
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
894b1d7c7e01
6423256: GC stacks should use a better data structure
jcoomes
parents:
1778
diff
changeset
|
776 notproduct(bool, ZapStackSegments, trueInDebug, \ |
894b1d7c7e01
6423256: GC stacks should use a better data structure
jcoomes
parents:
1778
diff
changeset
|
777 "Zap allocated/freed Stack segments with 0xFADFADED") \ |
894b1d7c7e01
6423256: GC stacks should use a better data structure
jcoomes
parents:
1778
diff
changeset
|
778 \ |
263
12eea04c8b06
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
219
diff
changeset
|
779 develop(bool, ZapUnusedHeapArea, trueInDebug, \ |
0 | 780 "Zap unused heap space with 0xBAADBABE") \ |
781 \ | |
263
12eea04c8b06
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
219
diff
changeset
|
782 develop(bool, TraceZapUnusedHeapArea, false, \ |
12eea04c8b06
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
219
diff
changeset
|
783 "Trace zapping of unused heap space") \ |
12eea04c8b06
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
219
diff
changeset
|
784 \ |
12eea04c8b06
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
219
diff
changeset
|
785 develop(bool, CheckZapUnusedHeapArea, false, \ |
12eea04c8b06
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
219
diff
changeset
|
786 "Check zapping of unused heap space") \ |
12eea04c8b06
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
jmasa
parents:
219
diff
changeset
|
787 \ |
481
7d7a7c599c17
6578152: fill_region_with_object has usability and safety issues
jcoomes
parents:
462
diff
changeset
|
788 develop(bool, ZapFillerObjects, trueInDebug, \ |
7d7a7c599c17
6578152: fill_region_with_object has usability and safety issues
jcoomes
parents:
462
diff
changeset
|
789 "Zap filler objects with 0xDEAFBABE") \ |
7d7a7c599c17
6578152: fill_region_with_object has usability and safety issues
jcoomes
parents:
462
diff
changeset
|
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 \ | |
6605 | 800 diagnostic(bool, VerboseVerification, false, \ |
801 "Display detailed verification details") \ | |
802 \ | |
1490
f03d0a26bf83
6888954: argument formatting for assert() and friends
jcoomes
parents:
1367
diff
changeset
|
803 notproduct(uintx, ErrorHandlerTest, 0, \ |
f03d0a26bf83
6888954: argument formatting for assert() and friends
jcoomes
parents:
1367
diff
changeset
|
804 "If > 0, provokes an error after VM initialization; the value" \ |
f03d0a26bf83
6888954: argument formatting for assert() and friends
jcoomes
parents:
1367
diff
changeset
|
805 "determines which error to provoke. See test_error_handler()" \ |
f03d0a26bf83
6888954: argument formatting for assert() and friends
jcoomes
parents:
1367
diff
changeset
|
806 "in debug.cpp.") \ |
f03d0a26bf83
6888954: argument formatting for assert() and friends
jcoomes
parents:
1367
diff
changeset
|
807 \ |
0 | 808 develop(bool, Verbose, false, \ |
809 "Prints additional debugging information from other modes") \ | |
810 \ | |
811 develop(bool, PrintMiscellaneous, false, \ | |
812 "Prints uncategorized debugging information (requires +Verbose)") \ | |
813 \ | |
814 develop(bool, WizardMode, false, \ | |
815 "Prints much more debugging information") \ | |
816 \ | |
817 product(bool, ShowMessageBoxOnError, false, \ | |
818 "Keep process alive on VM fatal error") \ | |
819 \ | |
2204
63d374c54045
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
2199
diff
changeset
|
820 product(bool, CreateMinidumpOnCrash, false, \ |
63d374c54045
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
2199
diff
changeset
|
821 "Create minidump on VM fatal error") \ |
63d374c54045
7014918: Improve core/minidump handling in Hotspot
ctornqvi
parents:
2199
diff
changeset
|
822 \ |
0 | 823 product_pd(bool, UseOSErrorReporting, \ |
824 "Let VM fatal error propagate to the OS (ie. WER on Windows)") \ | |
825 \ | |
826 product(bool, SuppressFatalErrorMessage, false, \ | |
827 "Do NO Fatal Error report [Avoid deadlock]") \ | |
828 \ | |
829 product(ccstrlist, OnError, "", \ | |
830 "Run user-defined commands on fatal error; see VMError.cpp " \ | |
831 "for examples") \ | |
832 \ | |
833 product(ccstrlist, OnOutOfMemoryError, "", \ | |
834 "Run user-defined commands on first java.lang.OutOfMemoryError") \ | |
835 \ | |
615
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
836 manageable(bool, HeapDumpBeforeFullGC, false, \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
837 "Dump heap to file before any major stop-world GC") \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
838 \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
839 manageable(bool, HeapDumpAfterFullGC, false, \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
840 "Dump heap to file after any major stop-world GC") \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
841 \ |
0 | 842 manageable(bool, HeapDumpOnOutOfMemoryError, false, \ |
843 "Dump heap to file when java.lang.OutOfMemoryError is thrown") \ | |
844 \ | |
845 manageable(ccstr, HeapDumpPath, NULL, \ | |
846 "When HeapDumpOnOutOfMemoryError is on, the path (filename or" \ | |
847 "directory) of the dump file (defaults to java_pid<pid>.hprof" \ | |
848 "in the working directory)") \ | |
849 \ | |
850 develop(uintx, SegmentedHeapDumpThreshold, 2*G, \ | |
851 "Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) " \ | |
852 "when the heap usage is larger than this") \ | |
853 \ | |
854 develop(uintx, HeapDumpSegmentSize, 1*G, \ | |
855 "Approximate segment size when generating a segmented heap dump") \ | |
856 \ | |
857 develop(bool, BreakAtWarning, false, \ | |
858 "Execute breakpoint upon encountering VM warning") \ | |
859 \ | |
860 product_pd(bool, UseVectoredExceptions, \ | |
861 "Temp Flag - Use Vectored Exceptions rather than SEH (Windows Only)") \ | |
862 \ | |
863 develop(bool, TraceVMOperation, false, \ | |
864 "Trace vm operations") \ | |
865 \ | |
866 develop(bool, UseFakeTimers, false, \ | |
867 "Tells whether the VM should use system time or a fake timer") \ | |
868 \ | |
6197 | 869 product(ccstr, NativeMemoryTracking, "off", \ |
870 "Native memory tracking options") \ | |
871 \ | |
0 | 872 diagnostic(bool, LogCompilation, false, \ |
873 "Log compilation activity in detail to hotspot.log or LogFile") \ | |
874 \ | |
875 product(bool, PrintCompilation, false, \ | |
876 "Print compilations") \ | |
877 \ | |
878 diagnostic(bool, TraceNMethodInstalls, false, \ | |
879 "Trace nmethod intallation") \ | |
880 \ | |
4119
7793051af7d6
7110058: change default for ScavengeRootsInCode to 2
twisti
parents:
4065
diff
changeset
|
881 diagnostic(intx, ScavengeRootsInCode, 2, \ |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
910
diff
changeset
|
882 "0: do not allow scavengable oops in the code cache; " \ |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
910
diff
changeset
|
883 "1: allow scavenging from the code cache; " \ |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
910
diff
changeset
|
884 "2: emit as many constants as the compiler can see") \ |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
910
diff
changeset
|
885 \ |
0 | 886 product(bool, AlwaysRestoreFPU, false, \ |
887 "Restore the FPU control word after every JNI call (expensive)") \ | |
888 \ | |
4064
670a74b863fc
7107042: assert(no_dead_loop) failed: dead loop detected
kvn
parents:
4059
diff
changeset
|
889 diagnostic(bool, PrintCompilation2, false, \ |
0 | 890 "Print additional statistics per compilation") \ |
891 \ | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
76
diff
changeset
|
892 diagnostic(bool, PrintAdapterHandlers, false, \ |
0 | 893 "Print code generated for i2c/c2i adapters") \ |
894 \ | |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6199
diff
changeset
|
895 diagnostic(bool, VerifyAdapterCalls, trueInDebug, \ |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6199
diff
changeset
|
896 "Verify that i2c/c2i adapters are called properly") \ |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6199
diff
changeset
|
897 \ |
1207
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1206
diff
changeset
|
898 develop(bool, VerifyAdapterSharing, false, \ |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1206
diff
changeset
|
899 "Verify that the code for shared adapters is the equivalent") \ |
74c848d437ab
6921922: fix for 6911204 breaks tagged stack interpreter
never
parents:
1206
diff
changeset
|
900 \ |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
76
diff
changeset
|
901 diagnostic(bool, PrintAssembly, false, \ |
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
76
diff
changeset
|
902 "Print assembly code (using external disassembler.so)") \ |
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
76
diff
changeset
|
903 \ |
370
885fe0f95828
6744783: HotSpot segfaults if given -XX options with an empty string argument
never
parents:
325
diff
changeset
|
904 diagnostic(ccstr, PrintAssemblyOptions, NULL, \ |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
76
diff
changeset
|
905 "Options string passed to disassembler.so") \ |
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
76
diff
changeset
|
906 \ |
4561
35ca3ade314d
enabled nmethod statistics for product build
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4464
diff
changeset
|
907 product(bool, PrintNMethodStatistics, false, \ |
35ca3ade314d
enabled nmethod statistics for product build
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4464
diff
changeset
|
908 "Print a summary statistic for the generated nmethods") \ |
35ca3ade314d
enabled nmethod statistics for product build
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4464
diff
changeset
|
909 \ |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
76
diff
changeset
|
910 diagnostic(bool, PrintNMethods, false, \ |
0 | 911 "Print assembly code for nmethods when generated") \ |
912 \ | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
76
diff
changeset
|
913 diagnostic(bool, PrintNativeNMethods, false, \ |
0 | 914 "Print assembly code for native nmethods when generated") \ |
915 \ | |
916 develop(bool, PrintDebugInfo, false, \ | |
917 "Print debug information for all nmethods when generated") \ | |
918 \ | |
919 develop(bool, PrintRelocations, false, \ | |
920 "Print relocation information for all nmethods when generated") \ | |
921 \ | |
922 develop(bool, PrintDependencies, false, \ | |
923 "Print dependency information for all nmethods when generated") \ | |
924 \ | |
925 develop(bool, PrintExceptionHandlers, false, \ | |
926 "Print exception handler tables for all nmethods when generated") \ | |
927 \ | |
928 develop(bool, InterceptOSException, false, \ | |
929 "Starts debugger when an implicit OS (e.g., NULL) " \ | |
930 "exception happens") \ | |
931 \ | |
932 notproduct(bool, PrintCodeCache, false, \ | |
933 "Print the compiled_code cache when exiting") \ | |
934 \ | |
935 develop(bool, PrintCodeCache2, false, \ | |
936 "Print detailed info on the compiled_code cache when exiting") \ | |
937 \ | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
76
diff
changeset
|
938 diagnostic(bool, PrintStubCode, false, \ |
0 | 939 "Print generated stub code") \ |
940 \ | |
941 product(bool, StackTraceInThrowable, true, \ | |
942 "Collect backtrace in throwable when exception happens") \ | |
943 \ | |
944 product(bool, OmitStackTraceInFastThrow, true, \ | |
945 "Omit backtraces for some 'hot' exceptions in optimized code") \ | |
946 \ | |
947 product(bool, ProfilerPrintByteCodeStatistics, false, \ | |
948 "Prints byte code statictics when dumping profiler output") \ | |
949 \ | |
950 product(bool, ProfilerRecordPC, false, \ | |
951 "Collects tick for each 16 byte interval of compiled code") \ | |
952 \ | |
1064 | 953 product(bool, ProfileVM, false, \ |
0 | 954 "Profiles ticks that fall within VM (either in the VM Thread " \ |
955 "or VM code called through stubs)") \ | |
956 \ | |
957 product(bool, ProfileIntervals, false, \ | |
958 "Prints profiles for each interval (see ProfileIntervalsTicks)") \ | |
959 \ | |
960 notproduct(bool, ProfilerCheckIntervals, false, \ | |
961 "Collect and print info on spacing of profiler ticks") \ | |
962 \ | |
963 develop(bool, PrintJVMWarnings, false, \ | |
964 "Prints warnings for unimplemented JVM functions") \ | |
965 \ | |
1870
c77b5c592eab
6392697: Additional flag needed to supress Hotspot warning messages
kamg
parents:
1868
diff
changeset
|
966 product(bool, PrintWarnings, true, \ |
c77b5c592eab
6392697: Additional flag needed to supress Hotspot warning messages
kamg
parents:
1868
diff
changeset
|
967 "Prints JVM warnings to output stream") \ |
c77b5c592eab
6392697: Additional flag needed to supress Hotspot warning messages
kamg
parents:
1868
diff
changeset
|
968 \ |
0 | 969 notproduct(uintx, WarnOnStalledSpinLock, 0, \ |
970 "Prints warnings for stalled SpinLocks") \ | |
971 \ | |
972 develop(bool, InitializeJavaLangSystem, true, \ | |
973 "Initialize java.lang.System - turn off for individual " \ | |
974 "method debugging") \ | |
975 \ | |
976 develop(bool, InitializeJavaLangString, true, \ | |
977 "Initialize java.lang.String - turn off for individual " \ | |
978 "method debugging") \ | |
979 \ | |
980 develop(bool, InitializeJavaLangExceptionsErrors, true, \ | |
981 "Initialize various error and exception classes - turn off for " \ | |
982 "individual method debugging") \ | |
983 \ | |
984 product(bool, RegisterFinalizersAtInit, true, \ | |
985 "Register finalizable objects at end of Object.<init> or " \ | |
1064 | 986 "after allocation") \ |
0 | 987 \ |
988 develop(bool, RegisterReferences, true, \ | |
989 "Tells whether the VM should register soft/weak/final/phantom " \ | |
990 "references") \ | |
991 \ | |
992 develop(bool, IgnoreRewrites, false, \ | |
993 "Supress rewrites of bytecodes in the oopmap generator. " \ | |
994 "This is unsafe!") \ | |
995 \ | |
996 develop(bool, PrintCodeCacheExtension, false, \ | |
997 "Print extension of code cache") \ | |
998 \ | |
999 develop(bool, UsePrivilegedStack, true, \ | |
1000 "Enable the security JVM functions") \ | |
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
7a018855d2f0
6779339: turn off LinkWellKnownClasses by default pending further testing
jrose
parents:
455
diff
changeset
|
1009 diagnostic(bool, LinkWellKnownClasses, false, \ |
132
60b728ec77c1
6652736: well known classes in system dictionary are inefficiently processed
jrose
parents:
116
diff
changeset
|
1010 "Resolve a well known class as soon as its name is seen") \ |
60b728ec77c1
6652736: well known classes in system dictionary are inefficiently processed
jrose
parents:
116
diff
changeset
|
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 \ | |
4864
b2cd0ee8f778
7114376: Make system dictionary hashtable bucket array size configurable
acorn
parents:
4854
diff
changeset
|
1022 experimental(intx, PredictedLoadedClassCount, 0, \ |
b2cd0ee8f778
7114376: Make system dictionary hashtable bucket array size configurable
acorn
parents:
4854
diff
changeset
|
1023 "Experimental: Tune loaded class cache starting size.") \ |
b2cd0ee8f778
7114376: Make system dictionary hashtable bucket array size configurable
acorn
parents:
4854
diff
changeset
|
1024 \ |
0 | 1025 diagnostic(bool, UnsyncloadClass, false, \ |
514 | 1026 "Unstable: VM calls loadClass unsynchronized. Custom " \ |
1027 "class loader must call VM synchronized for findClass " \ | |
1028 "and defineClass.") \ | |
1029 \ | |
1030 product(bool, AlwaysLockClassLoader, false, \ | |
1031 "Require the VM to acquire the class loader lock before calling " \ | |
1032 "loadClass() even for class loaders registering " \ | |
1064 | 1033 "as parallel capable") \ |
514 | 1034 \ |
1035 product(bool, AllowParallelDefineClass, false, \ | |
1036 "Allow parallel defineClass requests for class loaders " \ | |
1064 | 1037 "registering as parallel capable") \ |
514 | 1038 \ |
1039 product(bool, MustCallLoadClassInternal, false, \ | |
1064 | 1040 "Call loadClassInternal() rather than loadClass()") \ |
0 | 1041 \ |
1042 product_pd(bool, DontYieldALot, \ | |
1043 "Throw away obvious excess yield calls (for SOLARIS only)") \ | |
1044 \ | |
1045 product_pd(bool, ConvertSleepToYield, \ | |
1046 "Converts sleep(0) to thread yield " \ | |
1047 "(may be off for SOLARIS to improve GUI)") \ | |
1048 \ | |
1049 product(bool, ConvertYieldToSleep, false, \ | |
1050 "Converts yield to a sleep of MinSleepInterval to simulate Win32 "\ | |
1051 "behavior (SOLARIS only)") \ | |
1052 \ | |
1053 product(bool, UseBoundThreads, true, \ | |
1054 "Bind user level threads to kernel threads (for SOLARIS only)") \ | |
1055 \ | |
1056 develop(bool, UseDetachedThreads, true, \ | |
1057 "Use detached threads that are recycled upon termination " \ | |
1058 "(for SOLARIS only)") \ | |
1059 \ | |
1060 product(bool, UseLWPSynchronization, true, \ | |
1061 "Use LWP-based instead of libthread-based synchronization " \ | |
1062 "(SPARC only)") \ | |
1063 \ | |
370
885fe0f95828
6744783: HotSpot segfaults if given -XX options with an empty string argument
never
parents:
325
diff
changeset
|
1064 product(ccstr, SyncKnobs, NULL, \ |
0 | 1065 "(Unstable) Various monitor synchronization tunables") \ |
1066 \ | |
1067 product(intx, EmitSync, 0, \ | |
1068 "(Unsafe,Unstable) " \ | |
1069 " Controls emission of inline sync fast-path code") \ | |
1070 \ | |
1587 | 1071 product(intx, MonitorBound, 0, "Bound Monitor population") \ |
1072 \ | |
1073 product(bool, MonitorInUseLists, false, "Track Monitors for Deflation") \ | |
1074 \ | |
0 | 1075 product(intx, Atomics, 0, \ |
1076 "(Unsafe,Unstable) Diagnostic - Controls emission of atomics") \ | |
1077 \ | |
1078 product(intx, SyncFlags, 0, "(Unsafe,Unstable) Experimental Sync flags" ) \ | |
1079 \ | |
1080 product(intx, SyncVerbose, 0, "(Unstable)" ) \ | |
1081 \ | |
1082 product(intx, ClearFPUAtPark, 0, "(Unsafe,Unstable)" ) \ | |
1083 \ | |
1084 product(intx, hashCode, 0, \ | |
1085 "(Unstable) select hashCode generation algorithm" ) \ | |
1086 \ | |
1087 product(intx, WorkAroundNPTLTimedWaitHang, 1, \ | |
1088 "(Unstable, Linux-specific)" \ | |
1089 " avoid NPTL-FUTEX hang pthread_cond_timedwait" ) \ | |
1090 \ | |
1064 | 1091 product(bool, FilterSpuriousWakeups, true, \ |
1092 "Prevent spurious or premature wakeups from object.wait " \ | |
1093 "(Solaris only)") \ | |
0 | 1094 \ |
1095 product(intx, NativeMonitorTimeout, -1, "(Unstable)" ) \ | |
1096 product(intx, NativeMonitorFlags, 0, "(Unstable)" ) \ | |
1097 product(intx, NativeMonitorSpinLimit, 20, "(Unstable)" ) \ | |
1098 \ | |
1099 develop(bool, UsePthreads, false, \ | |
1100 "Use pthread-based instead of libthread-based synchronization " \ | |
1101 "(SPARC only)") \ | |
1102 \ | |
1103 product(bool, AdjustConcurrency, false, \ | |
1104 "call thr_setconcurrency at thread create time to avoid " \ | |
1105 "LWP starvation on MP systems (For Solaris Only)") \ | |
1106 \ | |
1107 product(bool, ReduceSignalUsage, false, \ | |
1108 "Reduce the use of OS signals in Java and/or the VM") \ | |
1109 \ | |
1110 notproduct(bool, ValidateMarkSweep, false, \ | |
1111 "Do extra validation during MarkSweep collection") \ | |
1112 \ | |
1113 notproduct(bool, RecordMarkSweepCompaction, false, \ | |
1114 "Enable GC-to-GC recording and querying of compaction during " \ | |
1115 "MarkSweep") \ | |
1116 \ | |
1117 develop_pd(bool, ShareVtableStubs, \ | |
1118 "Share vtable stubs (smaller code but worse branch prediction") \ | |
1119 \ | |
1120 develop(bool, LoadLineNumberTables, true, \ | |
1121 "Tells whether the class file parser loads line number tables") \ | |
1122 \ | |
1123 develop(bool, LoadLocalVariableTables, true, \ | |
1124 "Tells whether the class file parser loads local variable tables")\ | |
1125 \ | |
1126 develop(bool, LoadLocalVariableTypeTables, true, \ | |
1127 "Tells whether the class file parser loads local variable type tables")\ | |
1128 \ | |
1129 product(bool, AllowUserSignalHandlers, false, \ | |
1130 "Do not complain if the application installs signal handlers " \ | |
1131 "(Solaris & Linux only)") \ | |
1132 \ | |
1133 product(bool, UseSignalChaining, true, \ | |
1134 "Use signal-chaining to invoke signal handlers installed " \ | |
1135 "by the application (Solaris & Linux only)") \ | |
1136 \ | |
1137 product(bool, UseAltSigs, false, \ | |
1138 "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \ | |
1064 | 1139 "internal signals (Solaris only)") \ |
0 | 1140 \ |
1141 product(bool, AllowJNIEnvProxy, false, \ | |
1142 "Allow JNIEnv proxies for jdbx") \ | |
1143 \ | |
1144 product(bool, JNIDetachReleasesMonitors, true, \ | |
1145 "JNI DetachCurrentThread releases monitors owned by thread") \ | |
1146 \ | |
1147 product(bool, RestoreMXCSROnJNICalls, false, \ | |
1148 "Restore MXCSR when returning from JNI calls") \ | |
1149 \ | |
1150 product(bool, CheckJNICalls, false, \ | |
1151 "Verify all arguments to JNI calls") \ | |
1152 \ | |
1153 product(bool, UseFastJNIAccessors, true, \ | |
1154 "Use optimized versions of Get<Primitive>Field") \ | |
1155 \ | |
1156 product(bool, EagerXrunInit, false, \ | |
1157 "Eagerly initialize -Xrun libraries; allows startup profiling, " \ | |
1158 " but not all -Xrun libraries may support the state of the VM at this time") \ | |
1159 \ | |
1160 product(bool, PreserveAllAnnotations, false, \ | |
1161 "Preserve RuntimeInvisibleAnnotations as well as RuntimeVisibleAnnotations") \ | |
1162 \ | |
1163 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \ | |
1164 "Number of OutOfMemoryErrors preallocated with backtrace") \ | |
1165 \ | |
1166 product(bool, LazyBootClassLoader, true, \ | |
1167 "Enable/disable lazy opening of boot class path entries") \ | |
1168 \ | |
405 | 1169 product(bool, UseXMMForArrayCopy, false, \ |
1170 "Use SSE2 MOVQ instruction for Arraycopy") \ | |
1171 \ | |
0 | 1172 product(intx, FieldsAllocationStyle, 1, \ |
1366
b9d85fcdf743
6940733: allocate non static oop fields in super and sub classes together
kvn
parents:
1365
diff
changeset
|
1173 "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
|
1174 "2 - oops in super and sub classes are together") \ |
0 | 1175 \ |
1176 product(bool, CompactFields, true, \ | |
1177 "Allocate nonstatic fields in gaps between previous fields") \ | |
1178 \ | |
1179 notproduct(bool, PrintCompactFieldsSavings, false, \ | |
1180 "Print how many words were saved with CompactFields") \ | |
1181 \ | |
1182 product(bool, UseBiasedLocking, true, \ | |
1183 "Enable biased locking in JVM") \ | |
1184 \ | |
1185 product(intx, BiasedLockingStartupDelay, 4000, \ | |
1186 "Number of milliseconds to wait before enabling biased locking") \ | |
1187 \ | |
1188 diagnostic(bool, PrintBiasedLockingStatistics, false, \ | |
1189 "Print statistics of biased locking in JVM") \ | |
1190 \ | |
1191 product(intx, BiasedLockingBulkRebiasThreshold, 20, \ | |
1192 "Threshold of number of revocations per type to try to " \ | |
1193 "rebias all objects in the heap of that type") \ | |
1194 \ | |
1195 product(intx, BiasedLockingBulkRevokeThreshold, 40, \ | |
1196 "Threshold of number of revocations per type to permanently " \ | |
1197 "revoke biases of all objects in the heap of that type") \ | |
1198 \ | |
1199 product(intx, BiasedLockingDecayTime, 25000, \ | |
1200 "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \ | |
1201 "type after previous bulk rebias") \ | |
1202 \ | |
2376
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
1203 develop(bool, JavaObjectsInPerm, false, \ |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
1204 "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
|
1205 "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
|
1206 "in production.") \ |
c7f3d0b4570f
7017732: move static fields into Class to prepare for perm gen removal
never
parents:
2370
diff
changeset
|
1207 \ |
0 | 1208 /* tracing */ \ |
1209 \ | |
1210 notproduct(bool, TraceRuntimeCalls, false, \ | |
1211 "Trace run-time calls") \ | |
1212 \ | |
1213 develop(bool, TraceJNICalls, false, \ | |
1214 "Trace JNI calls") \ | |
1215 \ | |
1216 notproduct(bool, TraceJVMCalls, false, \ | |
1217 "Trace JVM calls") \ | |
1218 \ | |
370
885fe0f95828
6744783: HotSpot segfaults if given -XX options with an empty string argument
never
parents:
325
diff
changeset
|
1219 product(ccstr, TraceJVMTI, NULL, \ |
0 | 1220 "Trace flags for JVMTI functions and events") \ |
1221 \ | |
1222 /* This option can change an EMCP method into an obsolete method. */ \ | |
1223 /* This can affect tests that except specific methods to be EMCP. */ \ | |
1224 /* This option should be used with caution. */ \ | |
1225 product(bool, StressLdcRewrite, false, \ | |
1226 "Force ldc -> ldc_w rewrite during RedefineClasses") \ | |
1227 \ | |
1228 product(intx, TraceRedefineClasses, 0, \ | |
1229 "Trace level for JVMTI RedefineClasses") \ | |
1230 \ | |
1574 | 1231 develop(bool, StressMethodComparator, false, \ |
1232 "run the MethodComparator on all loaded methods") \ | |
1233 \ | |
0 | 1234 /* change to false by default sometime after Mustang */ \ |
1235 product(bool, VerifyMergedCPBytecodes, true, \ | |
1236 "Verify bytecodes after RedefineClasses constant pool merging") \ | |
1237 \ | |
1238 develop(bool, TraceJNIHandleAllocation, false, \ | |
1239 "Trace allocation/deallocation of JNI handle blocks") \ | |
1240 \ | |
1241 develop(bool, TraceThreadEvents, false, \ | |
1242 "Trace all thread events") \ | |
1243 \ | |
1244 develop(bool, TraceBytecodes, false, \ | |
1245 "Trace bytecode execution") \ | |
1246 \ | |
1247 develop(bool, TraceClassInitialization, false, \ | |
1248 "Trace class initialization") \ | |
1249 \ | |
1936
8d88c9ac9247
Correct deopt handler entry. New flag -XX:+TraceSignals. More detailed deopt printing.
Thomas Wuerthinger <wuerthinger@ssw.jku.at>
parents:
1930
diff
changeset
|
1250 product(bool, TraceExceptions, false, \ |
0 | 1251 "Trace exceptions") \ |
1252 \ | |
1253 develop(bool, TraceICs, false, \ | |
1254 "Trace inline cache changes") \ | |
1255 \ | |
1256 notproduct(bool, TraceInvocationCounterOverflow, false, \ | |
1257 "Trace method invocation counter overflow") \ | |
1258 \ | |
1259 develop(bool, TraceInlineCacheClearing, false, \ | |
1260 "Trace clearing of inline caches in nmethods") \ | |
1261 \ | |
1262 develop(bool, TraceDependencies, false, \ | |
1263 "Trace dependencies") \ | |
1264 \ | |
1265 develop(bool, VerifyDependencies, trueInDebug, \ | |
1266 "Exercise and verify the compilation dependency mechanism") \ | |
1267 \ | |
1268 develop(bool, TraceNewOopMapGeneration, false, \ | |
1269 "Trace OopMapGeneration") \ | |
1270 \ | |
1271 develop(bool, TraceNewOopMapGenerationDetailed, false, \ | |
1272 "Trace OopMapGeneration: print detailed cell states") \ | |
1273 \ | |
1274 develop(bool, TimeOopMap, false, \ | |
1275 "Time calls to GenerateOopMap::compute_map() in sum") \ | |
1276 \ | |
1277 develop(bool, TimeOopMap2, false, \ | |
1278 "Time calls to GenerateOopMap::compute_map() individually") \ | |
1279 \ | |
1280 develop(bool, TraceMonitorMismatch, false, \ | |
1281 "Trace monitor matching failures during OopMapGeneration") \ | |
1282 \ | |
1283 develop(bool, TraceOopMapRewrites, false, \ | |
1284 "Trace rewritting of method oops during oop map generation") \ | |
1285 \ | |
1286 develop(bool, TraceSafepoint, false, \ | |
1287 "Trace safepoint operations") \ | |
1288 \ | |
1289 develop(bool, TraceICBuffer, false, \ | |
1290 "Trace usage of IC buffer") \ | |
1291 \ | |
1292 develop(bool, TraceCompiledIC, false, \ | |
1293 "Trace changes of compiled IC") \ | |
1294 \ | |
1295 notproduct(bool, TraceZapDeadLocals, false, \ | |
1296 "Trace zapping dead locals") \ | |
1297 \ | |
1298 develop(bool, TraceStartupTime, false, \ | |
1299 "Trace setup time") \ | |
1300 \ | |
1301 develop(bool, TraceProtectionDomainVerification, false, \ | |
1302 "Trace protection domain verifcation") \ | |
1303 \ | |
1304 develop(bool, TraceClearedExceptions, false, \ | |
1305 "Prints when an exception is forcibly cleared") \ | |
1306 \ | |
1307 product(bool, TraceClassResolution, false, \ | |
1308 "Trace all constant pool resolutions (for debugging)") \ | |
1309 \ | |
1310 product(bool, TraceBiasedLocking, false, \ | |
1311 "Trace biased locking in JVM") \ | |
1312 \ | |
1313 product(bool, TraceMonitorInflation, false, \ | |
1314 "Trace monitor inflation in JVM") \ | |
1315 \ | |
1316 /* gc */ \ | |
1317 \ | |
1318 product(bool, UseSerialGC, false, \ | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
142
diff
changeset
|
1319 "Use the serial garbage collector") \ |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
142
diff
changeset
|
1320 \ |
1193
c81fa70144aa
6919980: G1: remove +UseG1GC from under experimental options (second attempt)
tonyp
parents:
1179
diff
changeset
|
1321 product(bool, UseG1GC, false, \ |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
142
diff
changeset
|
1322 "Use the Garbage-First garbage collector") \ |
0 | 1323 \ |
1324 product(bool, UseParallelGC, false, \ | |
1325 "Use the Parallel Scavenge garbage collector") \ | |
1326 \ | |
1327 product(bool, UseParallelOldGC, false, \ | |
1328 "Use the Parallel Old garbage collector") \ | |
1329 \ | |
1330 product(uintx, HeapMaximumCompactionInterval, 20, \ | |
1331 "How often should we maximally compact the heap (not allowing " \ | |
1332 "any dead space)") \ | |
1333 \ | |
1334 product(uintx, HeapFirstMaximumCompactionCount, 3, \ | |
1335 "The collection count for the first maximum compaction") \ | |
1336 \ | |
1337 product(bool, UseMaximumCompactionOnSystemGC, true, \ | |
1338 "In the Parallel Old garbage collector maximum compaction for " \ | |
1339 "a system GC") \ | |
1340 \ | |
1341 product(uintx, ParallelOldDeadWoodLimiterMean, 50, \ | |
1342 "The mean used by the par compact dead wood" \ | |
1343 "limiter (a number between 0-100).") \ | |
1344 \ | |
1345 product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \ | |
1346 "The standard deviation used by the par compact dead wood" \ | |
1347 "limiter (a number between 0-100).") \ | |
1348 \ | |
1349 product(uintx, ParallelGCThreads, 0, \ | |
1350 "Number of parallel threads parallel gc will use") \ | |
1351 \ | |
4095
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4067
diff
changeset
|
1352 product(bool, UseDynamicNumberOfGCThreads, false, \ |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4067
diff
changeset
|
1353 "Dynamically choose the number of parallel threads " \ |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4067
diff
changeset
|
1354 "parallel gc will use") \ |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4067
diff
changeset
|
1355 \ |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4067
diff
changeset
|
1356 diagnostic(bool, ForceDynamicNumberOfGCThreads, false, \ |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4067
diff
changeset
|
1357 "Force dynamic selection of the number of" \ |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4067
diff
changeset
|
1358 "parallel threads parallel gc will use to aid debugging") \ |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4067
diff
changeset
|
1359 \ |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4067
diff
changeset
|
1360 product(uintx, HeapSizePerGCThread, ScaleForWordSize(64*M), \ |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4067
diff
changeset
|
1361 "Size of heap (bytes) per GC thread used in calculating the " \ |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4067
diff
changeset
|
1362 "number of GC threads") \ |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4067
diff
changeset
|
1363 \ |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4067
diff
changeset
|
1364 product(bool, TraceDynamicGCThreads, false, \ |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4067
diff
changeset
|
1365 "Trace the dynamic GC thread usage") \ |
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4067
diff
changeset
|
1366 \ |
483
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
481
diff
changeset
|
1367 develop(bool, ParallelOldGCSplitALot, false, \ |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
481
diff
changeset
|
1368 "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
|
1369 "multiple destination spaces)") \ |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
481
diff
changeset
|
1370 \ |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
481
diff
changeset
|
1371 develop(uintx, ParallelOldGCSplitInterval, 3, \ |
0f773163217d
6765954: par compact - stress mode for splitting young gen spaces
jcoomes
parents:
481
diff
changeset
|
1372 "How often to provoke splitting a young gen space") \ |
0 | 1373 \ |
1284 | 1374 product(uintx, ConcGCThreads, 0, \ |
1375 "Number of threads concurrent gc will use") \ | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
142
diff
changeset
|
1376 \ |
0 | 1377 product(uintx, YoungPLABSize, 4096, \ |
1378 "Size of young gen promotion labs (in HeapWords)") \ | |
1379 \ | |
1380 product(uintx, OldPLABSize, 1024, \ | |
1381 "Size of old gen promotion labs (in HeapWords)") \ | |
1382 \ | |
1383 product(uintx, GCTaskTimeStampEntries, 200, \ | |
1384 "Number of time stamp entries per gc worker thread") \ | |
1385 \ | |
1386 product(bool, AlwaysTenure, false, \ | |
1387 "Always tenure objects in eden. (ParallelGC only)") \ | |
1388 \ | |
1389 product(bool, NeverTenure, false, \ | |
1064 | 1390 "Never tenure objects in eden, May tenure on overflow " \ |
1391 "(ParallelGC only)") \ | |
0 | 1392 \ |
1393 product(bool, ScavengeBeforeFullGC, true, \ | |
1064 | 1394 "Scavenge youngest generation before each full GC, " \ |
1395 "used with UseParallelGC") \ | |
0 | 1396 \ |
1397 develop(bool, ScavengeWithObjectsInToSpace, false, \ | |
1398 "Allow scavenges to occur when to_space contains objects.") \ | |
1399 \ | |
1400 product(bool, UseConcMarkSweepGC, false, \ | |
1401 "Use Concurrent Mark-Sweep GC in the old generation") \ | |
1402 \ | |
1403 product(bool, ExplicitGCInvokesConcurrent, false, \ | |
1404 "A System.gc() request invokes a concurrent collection;" \ | |
1405 " (effective only when UseConcMarkSweepGC)") \ | |
1406 \ | |
1407 product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \ | |
1064 | 1408 "A System.gc() request invokes a concurrent collection and " \ |
1409 "also unloads classes during such a concurrent gc cycle " \ | |
1410 "(effective only when UseConcMarkSweepGC)") \ | |
0 | 1411 \ |
1520
bb843ebc7c55
6919638: CMS: ExplicitGCInvokesConcurrent misinteracts with gc locker
ysr
parents:
1518
diff
changeset
|
1412 product(bool, GCLockerInvokesConcurrent, false, \ |
bb843ebc7c55
6919638: CMS: ExplicitGCInvokesConcurrent misinteracts with gc locker
ysr
parents:
1518
diff
changeset
|
1413 "The exit of a JNI CS necessitating a scavenge also" \ |
bb843ebc7c55
6919638: CMS: ExplicitGCInvokesConcurrent misinteracts with gc locker
ysr
parents:
1518
diff
changeset
|
1414 " kicks off a bkgrd concurrent collection") \ |
bb843ebc7c55
6919638: CMS: ExplicitGCInvokesConcurrent misinteracts with gc locker
ysr
parents:
1518
diff
changeset
|
1415 \ |
1991
016a3628c885
6994056: G1: when GC locker is active, extend the Eden instead of allocating into the old gen
tonyp
parents:
1972
diff
changeset
|
1416 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
|
1417 "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
|
1418 "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
|
1419 \ |
0 | 1420 develop(bool, UseCMSAdaptiveFreeLists, true, \ |
1421 "Use Adaptive Free Lists in the CMS generation") \ | |
1422 \ | |
1423 develop(bool, UseAsyncConcMarkSweepGC, true, \ | |
1424 "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\ | |
1425 \ | |
1426 develop(bool, RotateCMSCollectionTypes, false, \ | |
1427 "Rotate the CMS collections among concurrent and STW") \ | |
1428 \ | |
1429 product(bool, UseCMSBestFit, true, \ | |
1430 "Use CMS best fit allocation strategy") \ | |
1431 \ | |
1432 product(bool, UseCMSCollectionPassing, true, \ | |
1433 "Use passing of collection from background to foreground") \ | |
1434 \ | |
1435 product(bool, UseParNewGC, false, \ | |
1436 "Use parallel threads in the new generation.") \ | |
1437 \ | |
1438 product(bool, ParallelGCVerbose, false, \ | |
1439 "Verbose output for parallel GC.") \ | |
1440 \ | |
1441 product(intx, ParallelGCBufferWastePct, 10, \ | |
1442 "wasted fraction of parallel allocation buffer.") \ | |
1443 \ | |
3357
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
ysr
parents:
3325
diff
changeset
|
1444 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
|
1445 "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
|
1446 " -- 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
|
1447 " parallel card scanning under certain conditions ") \ |
0 | 1448 \ |
1449 product(intx, TargetPLABWastePct, 10, \ | |
1450 "target wasted space in last buffer as pct of overall allocation")\ | |
1451 \ | |
1452 product(uintx, PLABWeight, 75, \ | |
1453 "Percentage (0-100) used to weight the current sample when" \ | |
1454 "computing exponentially decaying average for ResizePLAB.") \ | |
1455 \ | |
1456 product(bool, ResizePLAB, true, \ | |
1457 "Dynamically resize (survivor space) promotion labs") \ | |
1458 \ | |
1459 product(bool, PrintPLAB, false, \ | |
1460 "Print (survivor space) promotion labs sizing decisions") \ | |
1461 \ | |
1462 product(intx, ParGCArrayScanChunk, 50, \ | |
1463 "Scan a subset and push remainder, if array is bigger than this") \ | |
1464 \ | |
695 | 1465 product(bool, ParGCUseLocalOverflow, false, \ |
1466 "Instead of a global overflow list, use local overflow stacks") \ | |
1467 \ | |
679
cea947c8a988
6819891: ParNew: Fix work queue overflow code to deal correctly with +UseCompressedOops
ysr
parents:
647
diff
changeset
|
1468 product(bool, ParGCTrimOverflow, true, \ |
695 | 1469 "Eagerly trim the local overflow lists (when ParGCUseLocalOverflow") \ |
679
cea947c8a988
6819891: ParNew: Fix work queue overflow code to deal correctly with +UseCompressedOops
ysr
parents:
647
diff
changeset
|
1470 \ |
534 | 1471 notproduct(bool, ParGCWorkQueueOverflowALot, false, \ |
1472 "Whether we should simulate work queue overflow in ParNew") \ | |
1473 \ | |
1474 notproduct(uintx, ParGCWorkQueueOverflowInterval, 1000, \ | |
1064 | 1475 "An `interval' counter that determines how frequently " \ |
1476 "we simulate overflow; a smaller number increases frequency") \ | |
534 | 1477 \ |
1478 product(uintx, ParGCDesiredObjsFromOverflowList, 20, \ | |
0 | 1479 "The desired number of objects to claim from the overflow list") \ |
1480 \ | |
4728
441e946dc1af
7121618: Change type of number of GC workers to unsigned int.
jmasa
parents:
4125
diff
changeset
|
1481 diagnostic(uintx, ParGCStridesPerThread, 2, \ |
3357
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
ysr
parents:
3325
diff
changeset
|
1482 "The number of strides per worker thread that we divide up the " \ |
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
ysr
parents:
3325
diff
changeset
|
1483 "card table scanning work into") \ |
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
ysr
parents:
3325
diff
changeset
|
1484 \ |
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
ysr
parents:
3325
diff
changeset
|
1485 diagnostic(intx, ParGCCardsPerStrideChunk, 256, \ |
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
ysr
parents:
3325
diff
changeset
|
1486 "The number of cards in each chunk of the parallel chunks used " \ |
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
ysr
parents:
3325
diff
changeset
|
1487 "during card table scanning") \ |
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
ysr
parents:
3325
diff
changeset
|
1488 \ |
fc2b798ab316
6883834: ParNew: assert(!_g->to()->is_in_reserved(obj),"Scanning field twice?") with LargeObjects tests
ysr
parents:
3325
diff
changeset
|
1489 product(uintx, CMSParPromoteBlocksToClaim, 16, \ |
0 | 1490 "Number of blocks to attempt to claim when refilling CMS LAB for "\ |
1491 "parallel GC.") \ | |
1492 \ | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1493 product(uintx, OldPLABWeight, 50, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1494 "Percentage (0-100) used to weight the current sample when" \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1495 "computing exponentially decaying average for resizing CMSParPromoteBlocksToClaim.") \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1496 \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1497 product(bool, ResizeOldPLAB, true, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1498 "Dynamically resize (old gen) promotion labs") \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1499 \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1500 product(bool, PrintOldPLAB, false, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1501 "Print (old gen) promotion labs sizing decisions") \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1502 \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1503 product(uintx, CMSOldPLABMin, 16, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1504 "Min size of CMS gen promotion lab caches per worker per blksize")\ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1505 \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1506 product(uintx, CMSOldPLABMax, 1024, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1507 "Max size of CMS gen promotion lab caches per worker per blksize")\ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1508 \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1509 product(uintx, CMSOldPLABNumRefills, 4, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1510 "Nominal number of refills of CMS gen promotion lab cache" \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1511 " per worker per block size") \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1512 \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1513 product(bool, CMSOldPLABResizeQuicker, false, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1514 "Whether to react on-the-fly during a scavenge to a sudden" \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1515 " change in block demand rate") \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1516 \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1517 product(uintx, CMSOldPLABToleranceFactor, 4, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1518 "The tolerance of the phase-change detector for on-the-fly" \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1519 " PLAB resizing during a scavenge") \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1520 \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1521 product(uintx, CMSOldPLABReactivityFactor, 2, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1522 "The gain in the feedback loop for on-the-fly PLAB resizing" \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1523 " during a scavenge") \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1524 \ |
0 | 1525 product(bool, AlwaysPreTouch, false, \ |
1526 "It forces all freshly committed pages to be pre-touched.") \ | |
1527 \ | |
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2362
diff
changeset
|
1528 product_pd(intx, CMSYoungGenPerWorker, \ |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2362
diff
changeset
|
1529 "The maximum size of young gen chosen by default per GC worker " \ |
1064 | 1530 "thread available") \ |
0 | 1531 \ |
1532 product(bool, CMSIncrementalMode, false, \ | |
1533 "Whether CMS GC should operate in \"incremental\" mode") \ | |
1534 \ | |
1535 product(uintx, CMSIncrementalDutyCycle, 10, \ | |
1536 "CMS incremental mode duty cycle (a percentage, 0-100). If" \ | |
1537 "CMSIncrementalPacing is enabled, then this is just the initial" \ | |
1538 "value") \ | |
1539 \ | |
1540 product(bool, CMSIncrementalPacing, true, \ | |
1541 "Whether the CMS incremental mode duty cycle should be " \ | |
1542 "automatically adjusted") \ | |
1543 \ | |
1544 product(uintx, CMSIncrementalDutyCycleMin, 0, \ | |
1064 | 1545 "Lower bound on the duty cycle when CMSIncrementalPacing is " \ |
1546 "enabled (a percentage, 0-100)") \ | |
0 | 1547 \ |
1548 product(uintx, CMSIncrementalSafetyFactor, 10, \ | |
1064 | 1549 "Percentage (0-100) used to add conservatism when computing the " \ |
1550 "duty cycle") \ | |
0 | 1551 \ |
1552 product(uintx, CMSIncrementalOffset, 0, \ | |
1553 "Percentage (0-100) by which the CMS incremental mode duty cycle" \ | |
1064 | 1554 " is shifted to the right within the period between young GCs") \ |
0 | 1555 \ |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1556 product(uintx, CMSExpAvgFactor, 50, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1557 "Percentage (0-100) used to weight the current sample when" \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1558 "computing exponential averages for CMS statistics.") \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1559 \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1560 product(uintx, CMS_FLSWeight, 75, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1561 "Percentage (0-100) used to weight the current sample when" \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1562 "computing exponentially decating averages for CMS FLS statistics.") \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1563 \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1564 product(uintx, CMS_FLSPadding, 1, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1565 "The multiple of deviation from mean to use for buffering" \ |
0 | 1566 "against volatility in free list demand.") \ |
1567 \ | |
1568 product(uintx, FLSCoalescePolicy, 2, \ | |
1569 "CMS: Aggression level for coalescing, increasing from 0 to 4") \ | |
1570 \ | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1571 product(bool, FLSAlwaysCoalesceLarge, false, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1572 "CMS: Larger free blocks are always available for coalescing") \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1573 \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1574 product(double, FLSLargestBlockCoalesceProximity, 0.99, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1575 "CMS: the smaller the percentage the greater the coalition force")\ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1576 \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1577 product(double, CMSSmallCoalSurplusPercent, 1.05, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1578 "CMS: the factor by which to inflate estimated demand of small" \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1579 " block sizes to prevent coalescing with an adjoining block") \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1580 \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1581 product(double, CMSLargeCoalSurplusPercent, 0.95, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1582 "CMS: the factor by which to inflate estimated demand of large" \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1583 " block sizes to prevent coalescing with an adjoining block") \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1584 \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1585 product(double, CMSSmallSplitSurplusPercent, 1.10, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1586 "CMS: the factor by which to inflate estimated demand of small" \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1587 " block sizes to prevent splitting to supply demand for smaller" \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1588 " blocks") \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1589 \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1590 product(double, CMSLargeSplitSurplusPercent, 1.00, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1591 "CMS: the factor by which to inflate estimated demand of large" \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1592 " block sizes to prevent splitting to supply demand for smaller" \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1593 " blocks") \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1594 \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1595 product(bool, CMSExtrapolateSweep, false, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1596 "CMS: cushion for block demand during sweep") \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1597 \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1598 product(uintx, CMS_SweepWeight, 75, \ |
1064 | 1599 "Percentage (0-100) used to weight the current sample when " \ |
1600 "computing exponentially decaying average for inter-sweep " \ | |
1601 "duration") \ | |
0 | 1602 \ |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1603 product(uintx, CMS_SweepPadding, 1, \ |
1064 | 1604 "The multiple of deviation from mean to use for buffering " \ |
0 | 1605 "against volatility in inter-sweep duration.") \ |
1606 \ | |
1607 product(uintx, CMS_SweepTimerThresholdMillis, 10, \ | |
1608 "Skip block flux-rate sampling for an epoch unless inter-sweep " \ | |
1064 | 1609 "duration exceeds this threhold in milliseconds") \ |
0 | 1610 \ |
1611 develop(bool, CMSTraceIncrementalMode, false, \ | |
1612 "Trace CMS incremental mode") \ | |
1613 \ | |
1614 develop(bool, CMSTraceIncrementalPacing, false, \ | |
1615 "Trace CMS incremental mode pacing computation") \ | |
1616 \ | |
1617 develop(bool, CMSTraceThreadState, false, \ | |
1618 "Trace the CMS thread state (enable the trace_state() method)") \ | |
1619 \ | |
1620 product(bool, CMSClassUnloadingEnabled, false, \ | |
1621 "Whether class unloading enabled when using CMS GC") \ | |
1622 \ | |
94
0834225a7916
6634032: CMS: Need CMSInitiatingPermOccupancyFraction for perm, divorcing from CMSInitiatingOccupancyFraction
ysr
parents:
15
diff
changeset
|
1623 product(uintx, CMSClassUnloadingMaxInterval, 0, \ |
0834225a7916
6634032: CMS: Need CMSInitiatingPermOccupancyFraction for perm, divorcing from CMSInitiatingOccupancyFraction
ysr
parents:
15
diff
changeset
|
1624 "When CMS class unloading is enabled, the maximum CMS cycle count"\ |
0834225a7916
6634032: CMS: Need CMSInitiatingPermOccupancyFraction for perm, divorcing from CMSInitiatingOccupancyFraction
ysr
parents:
15
diff
changeset
|
1625 " for which classes may not be unloaded") \ |
0834225a7916
6634032: CMS: Need CMSInitiatingPermOccupancyFraction for perm, divorcing from CMSInitiatingOccupancyFraction
ysr
parents:
15
diff
changeset
|
1626 \ |
0 | 1627 product(bool, CMSCompactWhenClearAllSoftRefs, true, \ |
1628 "Compact when asked to collect CMS gen with clear_all_soft_refs") \ | |
1629 \ | |
1630 product(bool, UseCMSCompactAtFullCollection, true, \ | |
1631 "Use mark sweep compact at full collections") \ | |
1632 \ | |
1633 product(uintx, CMSFullGCsBeforeCompaction, 0, \ | |
1634 "Number of CMS full collection done before compaction if > 0") \ | |
1635 \ | |
1636 develop(intx, CMSDictionaryChoice, 0, \ | |
1637 "Use BinaryTreeDictionary as default in the CMS generation") \ | |
1638 \ | |
1639 product(uintx, CMSIndexedFreeListReplenish, 4, \ | |
1777
179464550c7d
6983930: CMS: Various small cleanups ca September 2010
ysr
parents:
1749
diff
changeset
|
1640 "Replenish an indexed free list with this number of chunks") \ |
0 | 1641 \ |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1642 product(bool, CMSReplenishIntermediate, true, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1643 "Replenish all intermediate free-list caches") \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1644 \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1645 product(bool, CMSSplitIndexedFreeListBlocks, true, \ |
1777
179464550c7d
6983930: CMS: Various small cleanups ca September 2010
ysr
parents:
1749
diff
changeset
|
1646 "When satisfying batched demand, split blocks from the " \ |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1647 "IndexedFreeList whose size is a multiple of requested size") \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1648 \ |
0 | 1649 product(bool, CMSLoopWarn, false, \ |
1650 "Warn in case of excessive CMS looping") \ | |
1651 \ | |
1652 develop(bool, CMSOverflowEarlyRestoration, false, \ | |
1653 "Whether preserved marks should be restored early") \ | |
1654 \ | |
1284 | 1655 product(uintx, MarkStackSize, NOT_LP64(32*K) LP64_ONLY(4*M), \ |
1656 "Size of marking stack") \ | |
1657 \ | |
1658 product(uintx, MarkStackSizeMax, NOT_LP64(4*M) LP64_ONLY(512*M), \ | |
1659 "Max size of marking stack") \ | |
0 | 1660 \ |
1661 notproduct(bool, CMSMarkStackOverflowALot, false, \ | |
1662 "Whether we should simulate frequent marking stack / work queue" \ | |
1663 " overflow") \ | |
1664 \ | |
534 | 1665 notproduct(uintx, CMSMarkStackOverflowInterval, 1000, \ |
1666 "An `interval' counter that determines how frequently" \ | |
0 | 1667 " we simulate overflow; a smaller number increases frequency") \ |
1668 \ | |
1669 product(uintx, CMSMaxAbortablePrecleanLoops, 0, \ | |
1670 "(Temporary, subject to experimentation)" \ | |
1671 "Maximum number of abortable preclean iterations, if > 0") \ | |
1672 \ | |
1673 product(intx, CMSMaxAbortablePrecleanTime, 5000, \ | |
1674 "(Temporary, subject to experimentation)" \ | |
1675 "Maximum time in abortable preclean in ms") \ | |
1676 \ | |
1677 product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \ | |
1678 "(Temporary, subject to experimentation)" \ | |
1679 "Nominal minimum work per abortable preclean iteration") \ | |
1680 \ | |
1887
cd3ef3fd20dd
6992998: CMSWaitDuration=0 causes hangs with +ExplicitGCInvokesConcurrent
ysr
parents:
1843
diff
changeset
|
1681 manageable(intx, CMSAbortablePrecleanWaitMillis, 100, \ |
0 | 1682 "(Temporary, subject to experimentation)" \ |
1683 " Time that we sleep between iterations when not given" \ | |
1684 " enough work per iteration") \ | |
1685 \ | |
1686 product(uintx, CMSRescanMultiple, 32, \ | |
1687 "Size (in cards) of CMS parallel rescan task") \ | |
1688 \ | |
1689 product(uintx, CMSConcMarkMultiple, 32, \ | |
1690 "Size (in cards) of CMS concurrent MT marking task") \ | |
1691 \ | |
1692 product(uintx, CMSRevisitStackSize, 1*M, \ | |
1693 "Size of CMS KlassKlass revisit stack") \ | |
1694 \ | |
1695 product(bool, CMSAbortSemantics, false, \ | |
1696 "Whether abort-on-overflow semantics is implemented") \ | |
1697 \ | |
1698 product(bool, CMSParallelRemarkEnabled, true, \ | |
1699 "Whether parallel remark enabled (only if ParNewGC)") \ | |
1700 \ | |
1701 product(bool, CMSParallelSurvivorRemarkEnabled, true, \ | |
1702 "Whether parallel remark of survivor space" \ | |
1703 " enabled (effective only if CMSParallelRemarkEnabled)") \ | |
1704 \ | |
1705 product(bool, CMSPLABRecordAlways, true, \ | |
1706 "Whether to always record survivor space PLAB bdries" \ | |
1707 " (effective only if CMSParallelSurvivorRemarkEnabled)") \ | |
1708 \ | |
1709 product(bool, CMSConcurrentMTEnabled, true, \ | |
1710 "Whether multi-threaded concurrent work enabled (if ParNewGC)") \ | |
1711 \ | |
1712 product(bool, CMSPermGenPrecleaningEnabled, true, \ | |
1713 "Whether concurrent precleaning enabled in perm gen" \ | |
1714 " (effective only when CMSPrecleaningEnabled is true)") \ | |
1715 \ | |
1716 product(bool, CMSPrecleaningEnabled, true, \ | |
1717 "Whether concurrent precleaning enabled") \ | |
1718 \ | |
1719 product(uintx, CMSPrecleanIter, 3, \ | |
1720 "Maximum number of precleaning iteration passes") \ | |
1721 \ | |
1722 product(uintx, CMSPrecleanNumerator, 2, \ | |
1723 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ | |
1724 " ratio") \ | |
1725 \ | |
1726 product(uintx, CMSPrecleanDenominator, 3, \ | |
1727 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence" \ | |
1728 " ratio") \ | |
1729 \ | |
452
00b023ae2d78
6722113: CMS: Incorrect overflow handling during precleaning of Reference lists
ysr
parents:
443
diff
changeset
|
1730 product(bool, CMSPrecleanRefLists1, true, \ |
0 | 1731 "Preclean ref lists during (initial) preclean phase") \ |
1732 \ | |
1733 product(bool, CMSPrecleanRefLists2, false, \ | |
1734 "Preclean ref lists during abortable preclean phase") \ | |
1735 \ | |
1736 product(bool, CMSPrecleanSurvivors1, false, \ | |
1737 "Preclean survivors during (initial) preclean phase") \ | |
1738 \ | |
1739 product(bool, CMSPrecleanSurvivors2, true, \ | |
1740 "Preclean survivors during abortable preclean phase") \ | |
1741 \ | |
1742 product(uintx, CMSPrecleanThreshold, 1000, \ | |
1743 "Don't re-iterate if #dirty cards less than this") \ | |
1744 \ | |
1745 product(bool, CMSCleanOnEnter, true, \ | |
1746 "Clean-on-enter optimization for reducing number of dirty cards") \ | |
1747 \ | |
1748 product(uintx, CMSRemarkVerifyVariant, 1, \ | |
1749 "Choose variant (1,2) of verification following remark") \ | |
1750 \ | |
1751 product(uintx, CMSScheduleRemarkEdenSizeThreshold, 2*M, \ | |
1752 "If Eden used is below this value, don't try to schedule remark") \ | |
1753 \ | |
1754 product(uintx, CMSScheduleRemarkEdenPenetration, 50, \ | |
1755 "The Eden occupancy % at which to try and schedule remark pause") \ | |
1756 \ | |
1757 product(uintx, CMSScheduleRemarkSamplingRatio, 5, \ | |
1758 "Start sampling Eden top at least before yg occupancy reaches" \ | |
1759 " 1/<ratio> of the size at which we plan to schedule remark") \ | |
1760 \ | |
1761 product(uintx, CMSSamplingGrain, 16*K, \ | |
1762 "The minimum distance between eden samples for CMS (see above)") \ | |
1763 \ | |
1764 product(bool, CMSScavengeBeforeRemark, false, \ | |
1765 "Attempt scavenge before the CMS remark step") \ | |
1766 \ | |
1767 develop(bool, CMSTraceSweeper, false, \ | |
1768 "Trace some actions of the CMS sweeper") \ | |
1769 \ | |
1770 product(uintx, CMSWorkQueueDrainThreshold, 10, \ | |
1771 "Don't drain below this size per parallel worker/thief") \ | |
1772 \ | |
1887
cd3ef3fd20dd
6992998: CMSWaitDuration=0 causes hangs with +ExplicitGCInvokesConcurrent
ysr
parents:
1843
diff
changeset
|
1773 manageable(intx, CMSWaitDuration, 2000, \ |
0 | 1774 "Time in milliseconds that CMS thread waits for young GC") \ |
1775 \ | |
1776 product(bool, CMSYield, true, \ | |
1777 "Yield between steps of concurrent mark & sweep") \ | |
1778 \ | |
1779 product(uintx, CMSBitMapYieldQuantum, 10*M, \ | |
1780 "Bitmap operations should process at most this many bits" \ | |
1781 "between yields") \ | |
1782 \ | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1783 product(bool, CMSDumpAtPromotionFailure, false, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1784 "Dump useful information about the state of the CMS old " \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1785 " generation upon a promotion failure.") \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1786 \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1787 product(bool, CMSPrintChunksInDump, false, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1788 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1789 " more detailed information about the free chunks.") \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1790 \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1791 product(bool, CMSPrintObjectsInDump, false, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1792 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1793 " more detailed information about the allocated objects.") \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1794 \ |
0 | 1795 diagnostic(bool, FLSVerifyAllHeapReferences, false, \ |
1796 "Verify that all refs across the FLS boundary " \ | |
1797 " are to valid objects") \ | |
1798 \ | |
1799 diagnostic(bool, FLSVerifyLists, false, \ | |
1800 "Do lots of (expensive) FreeListSpace verification") \ | |
1801 \ | |
1802 diagnostic(bool, FLSVerifyIndexTable, false, \ | |
1803 "Do lots of (expensive) FLS index table verification") \ | |
1804 \ | |
1805 develop(bool, FLSVerifyDictionary, false, \ | |
1806 "Do lots of (expensive) FLS dictionary verification") \ | |
1807 \ | |
1808 develop(bool, VerifyBlockOffsetArray, false, \ | |
1809 "Do (expensive!) block offset array verification") \ | |
1810 \ | |
3321
a1d5f532838d
7040068: CMS: Possibly unsafe initialization of BlockOffsetArrayUseUnallocatedBlock
brutisso
parents:
3255
diff
changeset
|
1811 diagnostic(bool, BlockOffsetArrayUseUnallocatedBlock, false, \ |
0 | 1812 "Maintain _unallocated_block in BlockOffsetArray" \ |
1813 " (currently applicable only to CMS collector)") \ | |
1814 \ | |
1815 develop(bool, TraceCMSState, false, \ | |
1816 "Trace the state of the CMS collection") \ | |
1817 \ | |
1818 product(intx, RefDiscoveryPolicy, 0, \ | |
1819 "Whether reference-based(0) or referent-based(1)") \ | |
1820 \ | |
1821 product(bool, ParallelRefProcEnabled, false, \ | |
1822 "Enable parallel reference processing whenever possible") \ | |
1823 \ | |
1824 product(bool, ParallelRefProcBalancingEnabled, true, \ | |
1825 "Enable balancing of reference processing queues") \ | |
1826 \ | |
1827 product(intx, CMSTriggerRatio, 80, \ | |
1828 "Percentage of MinHeapFreeRatio in CMS generation that is " \ | |
1064 | 1829 "allocated before a CMS collection cycle commences") \ |
0 | 1830 \ |
94
0834225a7916
6634032: CMS: Need CMSInitiatingPermOccupancyFraction for perm, divorcing from CMSInitiatingOccupancyFraction
ysr
parents:
15
diff
changeset
|
1831 product(intx, CMSTriggerPermRatio, 80, \ |
1064 | 1832 "Percentage of MinHeapFreeRatio in the CMS perm generation that " \ |
1833 "is allocated before a CMS collection cycle commences, that " \ | |
1834 "also collects the perm generation") \ | |
94
0834225a7916
6634032: CMS: Need CMSInitiatingPermOccupancyFraction for perm, divorcing from CMSInitiatingOccupancyFraction
ysr
parents:
15
diff
changeset
|
1835 \ |
0834225a7916
6634032: CMS: Need CMSInitiatingPermOccupancyFraction for perm, divorcing from CMSInitiatingOccupancyFraction
ysr
parents:
15
diff
changeset
|
1836 product(uintx, CMSBootstrapOccupancy, 50, \ |
0 | 1837 "Percentage CMS generation occupancy at which to " \ |
1064 | 1838 "initiate CMS collection for bootstrapping collection stats") \ |
0 | 1839 \ |
1840 product(intx, CMSInitiatingOccupancyFraction, -1, \ | |
1841 "Percentage CMS generation occupancy to start a CMS collection " \ | |
1064 | 1842 "cycle. A negative value means that CMSTriggerRatio is used") \ |
94
0834225a7916
6634032: CMS: Need CMSInitiatingPermOccupancyFraction for perm, divorcing from CMSInitiatingOccupancyFraction
ysr
parents:
15
diff
changeset
|
1843 \ |
1283
1c72304f1885
6928073: G1: use existing command line parameters for marking cycle initiation
tonyp
parents:
1211
diff
changeset
|
1844 product(uintx, InitiatingHeapOccupancyPercent, 45, \ |
1c72304f1885
6928073: G1: use existing command line parameters for marking cycle initiation
tonyp
parents:
1211
diff
changeset
|
1845 "Percentage of the (entire) heap occupancy to start a " \ |
1c72304f1885
6928073: G1: use existing command line parameters for marking cycle initiation
tonyp
parents:
1211
diff
changeset
|
1846 "concurrent GC cycle. It us used by GCs that trigger a " \ |
1c72304f1885
6928073: G1: use existing command line parameters for marking cycle initiation
tonyp
parents:
1211
diff
changeset
|
1847 "concurrent GC cycle based on the occupancy of the entire heap, " \ |
1c72304f1885
6928073: G1: use existing command line parameters for marking cycle initiation
tonyp
parents:
1211
diff
changeset
|
1848 "not just one of the generations (e.g., G1). A value of 0 " \ |
1c72304f1885
6928073: G1: use existing command line parameters for marking cycle initiation
tonyp
parents:
1211
diff
changeset
|
1849 "denotes 'do constant GC cycles'.") \ |
1c72304f1885
6928073: G1: use existing command line parameters for marking cycle initiation
tonyp
parents:
1211
diff
changeset
|
1850 \ |
94
0834225a7916
6634032: CMS: Need CMSInitiatingPermOccupancyFraction for perm, divorcing from CMSInitiatingOccupancyFraction
ysr
parents:
15
diff
changeset
|
1851 product(intx, CMSInitiatingPermOccupancyFraction, -1, \ |
1064 | 1852 "Percentage CMS perm generation occupancy to start a " \ |
1853 "CMScollection cycle. A negative value means that " \ | |
1854 "CMSTriggerPermRatio is used") \ | |
0 | 1855 \ |
1856 product(bool, UseCMSInitiatingOccupancyOnly, false, \ | |
1857 "Only use occupancy as a crierion for starting a CMS collection") \ | |
1858 \ | |
94
0834225a7916
6634032: CMS: Need CMSInitiatingPermOccupancyFraction for perm, divorcing from CMSInitiatingOccupancyFraction
ysr
parents:
15
diff
changeset
|
1859 product(intx, CMSIsTooFullPercentage, 98, \ |
1064 | 1860 "An absolute ceiling above which CMS will always consider the " \ |
1861 "perm gen ripe for collection") \ | |
94
0834225a7916
6634032: CMS: Need CMSInitiatingPermOccupancyFraction for perm, divorcing from CMSInitiatingOccupancyFraction
ysr
parents:
15
diff
changeset
|
1862 \ |
0 | 1863 develop(bool, CMSTestInFreeList, false, \ |
1864 "Check if the coalesced range is already in the " \ | |
1064 | 1865 "free lists as claimed") \ |
0 | 1866 \ |
1867 notproduct(bool, CMSVerifyReturnedBytes, false, \ | |
1868 "Check that all the garbage collected was returned to the " \ | |
1869 "free lists.") \ | |
1870 \ | |
1871 notproduct(bool, ScavengeALot, false, \ | |
1872 "Force scavenge at every Nth exit from the runtime system " \ | |
1873 "(N=ScavengeALotInterval)") \ | |
1874 \ | |
1875 develop(bool, FullGCALot, false, \ | |
1876 "Force full gc at every Nth exit from the runtime system " \ | |
1877 "(N=FullGCALotInterval)") \ | |
1878 \ | |
1879 notproduct(bool, GCALotAtAllSafepoints, false, \ | |
1880 "Enforce ScavengeALot/GCALot at all potential safepoints") \ | |
1881 \ | |
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1882 product(bool, PrintPromotionFailure, false, \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1883 "Print additional diagnostic information following " \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1884 " promotion failure") \ |
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1064
diff
changeset
|
1885 \ |
0 | 1886 notproduct(bool, PromotionFailureALot, false, \ |
1887 "Use promotion failure handling on every youngest generation " \ | |
1888 "collection") \ | |
1889 \ | |
1890 develop(uintx, PromotionFailureALotCount, 1000, \ | |
1891 "Number of promotion failures occurring at ParGCAllocBuffer" \ | |
1892 "refill attempts (ParNew) or promotion attempts " \ | |
1893 "(other young collectors) ") \ | |
1894 \ | |
1895 develop(uintx, PromotionFailureALotInterval, 5, \ | |
1896 "Total collections between promotion failures alot") \ | |
1897 \ | |
1837
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1836
diff
changeset
|
1898 experimental(intx, WorkStealingSleepMillis, 1, \ |
0 | 1899 "Sleep time when sleep is used for yields") \ |
1900 \ | |
2430 | 1901 experimental(uintx, WorkStealingYieldsBeforeSleep, 5000, \ |
0 | 1902 "Number of yields before a sleep is done during workstealing") \ |
1903 \ | |
1837
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1836
diff
changeset
|
1904 experimental(uintx, WorkStealingHardSpins, 4096, \ |
546
05c6d52fa7a9
6690928: Use spinning in combination with yields for workstealing termination.
jmasa
parents:
541
diff
changeset
|
1905 "Number of iterations in a spin loop between checks on " \ |
05c6d52fa7a9
6690928: Use spinning in combination with yields for workstealing termination.
jmasa
parents:
541
diff
changeset
|
1906 "time out of hard spin") \ |
05c6d52fa7a9
6690928: Use spinning in combination with yields for workstealing termination.
jmasa
parents:
541
diff
changeset
|
1907 \ |
1837
c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
ysr
parents:
1836
diff
changeset
|
1908 experimental(uintx, WorkStealingSpinToYieldRatio, 10, \ |
546
05c6d52fa7a9
6690928: Use spinning in combination with yields for workstealing termination.
jmasa
parents:
541
diff
changeset
|
1909 "Ratio of hard spins to calls to yield") \ |
05c6d52fa7a9
6690928: Use spinning in combination with yields for workstealing termination.
jmasa
parents:
541
diff
changeset
|
1910 \ |
1311
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
1288
diff
changeset
|
1911 develop(uintx, ObjArrayMarkingStride, 512, \ |
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
1288
diff
changeset
|
1912 "Number of ObjArray elements to push onto the marking stack" \ |
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
1288
diff
changeset
|
1913 "before pushing a continuation entry") \ |
2a1472c30599
4396719: Mark Sweep stack overflow on deeply nested Object arrays
jcoomes
parents:
1288
diff
changeset
|
1914 \ |
3779 | 1915 notproduct(bool, ExecuteInternalVMTests, false, \ |
1916 "Enable execution of internal VM tests.") \ | |
1917 \ | |
0 | 1918 product_pd(bool, UseTLAB, "Use thread-local object allocation") \ |
1919 \ | |
1920 product_pd(bool, ResizeTLAB, \ | |
1921 "Dynamically resize tlab size for threads") \ | |
1922 \ | |
1923 product(bool, ZeroTLAB, false, \ | |
1924 "Zero out the newly created TLAB") \ | |
1925 \ | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
142
diff
changeset
|
1926 product(bool, FastTLABRefill, true, \ |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
142
diff
changeset
|
1927 "Use fast TLAB refill code") \ |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
142
diff
changeset
|
1928 \ |
0 | 1929 product(bool, PrintTLAB, false, \ |
1930 "Print various TLAB related information") \ | |
1931 \ | |
1932 product(bool, TLABStats, true, \ | |
1933 "Print various TLAB related information") \ | |
1934 \ | |
941 | 1935 product(bool, PrintRevisitStats, false, \ |
1936 "Print revisit (klass and MDO) stack related information") \ | |
1937 \ | |
2192
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
1938 EMBEDDED_ONLY(product(bool, LowMemoryProtection, true, \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
1939 "Enable LowMemoryProtection")) \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
1940 \ |
0 | 1941 product_pd(bool, NeverActAsServerClassMachine, \ |
1942 "Never act like a server-class machine") \ | |
1943 \ | |
1944 product(bool, AlwaysActAsServerClassMachine, false, \ | |
1945 "Always act like a server-class machine") \ | |
1946 \ | |
1064 | 1947 product_pd(uint64_t, MaxRAM, \ |
1948 "Real memory size (in bytes) used to set maximum heap size") \ | |
1949 \ | |
1950 product(uintx, ErgoHeapSizeLimit, 0, \ | |
1951 "Maximum ergonomically set heap size (in bytes); zero means use " \ | |
1952 "MaxRAM / MaxRAMFraction") \ | |
1953 \ | |
1954 product(uintx, MaxRAMFraction, 4, \ | |
1955 "Maximum fraction (1/n) of real memory used for maximum heap " \ | |
1956 "size") \ | |
0 | 1957 \ |
1958 product(uintx, DefaultMaxRAMFraction, 4, \ | |
1064 | 1959 "Maximum fraction (1/n) of real memory used for maximum heap " \ |
1960 "size; deprecated: to be renamed to MaxRAMFraction") \ | |
1961 \ | |
1962 product(uintx, MinRAMFraction, 2, \ | |
1963 "Minimum fraction (1/n) of real memory used for maxmimum heap " \ | |
1964 "size on systems with small physical memory size") \ | |
1965 \ | |
1966 product(uintx, InitialRAMFraction, 64, \ | |
1967 "Fraction (1/n) of real memory used for initial heap size") \ | |
0 | 1968 \ |
1969 product(bool, UseAutoGCSelectPolicy, false, \ | |
1970 "Use automatic collection selection policy") \ | |
1971 \ | |
1972 product(uintx, AutoGCSelectPauseMillis, 5000, \ | |
1973 "Automatic GC selection pause threshhold in ms") \ | |
1974 \ | |
1975 product(bool, UseAdaptiveSizePolicy, true, \ | |
1976 "Use adaptive generation sizing policies") \ | |
1977 \ | |
1978 product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \ | |
1979 "Use adaptive survivor sizing policies") \ | |
1980 \ | |
1981 product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \ | |
1982 "Use adaptive young-old sizing policies at minor collections") \ | |
1983 \ | |
1984 product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \ | |
1985 "Use adaptive young-old sizing policies at major collections") \ | |
1986 \ | |
1987 product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \ | |
1988 "Use statistics from System.GC for adaptive size policy") \ | |
1989 \ | |
1990 product(bool, UseAdaptiveGCBoundary, false, \ | |
1991 "Allow young-old boundary to move") \ | |
1992 \ | |
1993 develop(bool, TraceAdaptiveGCBoundary, false, \ | |
1994 "Trace young-old boundary moves") \ | |
1995 \ | |
1996 develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \ | |
1997 "Resize the virtual spaces of the young or old generations") \ | |
1998 \ | |
1999 product(uintx, AdaptiveSizeThroughPutPolicy, 0, \ | |
2000 "Policy for changeing generation size for throughput goals") \ | |
2001 \ | |
2002 product(uintx, AdaptiveSizePausePolicy, 0, \ | |
2003 "Policy for changing generation size for pause goals") \ | |
2004 \ | |
2005 develop(bool, PSAdjustTenuredGenForMinorPause, false, \ | |
2006 "Adjust tenured generation to achive a minor pause goal") \ | |
2007 \ | |
2008 develop(bool, PSAdjustYoungGenForMajorPause, false, \ | |
2009 "Adjust young generation to achive a major pause goal") \ | |
2010 \ | |
2011 product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \ | |
2012 "Number of steps where heuristics is used before data is used") \ | |
2013 \ | |
2014 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \ | |
2015 "Number of collections before the adaptive sizing is started") \ | |
2016 \ | |
2017 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \ | |
1064 | 2018 "Collecton interval for printing information; zero => never") \ |
0 | 2019 \ |
2020 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \ | |
2021 "Use adaptive minimum footprint as a goal") \ | |
2022 \ | |
2023 product(uintx, AdaptiveSizePolicyWeight, 10, \ | |
2024 "Weight given to exponential resizing, between 0 and 100") \ | |
2025 \ | |
2026 product(uintx, AdaptiveTimeWeight, 25, \ | |
2027 "Weight given to time in adaptive policy, between 0 and 100") \ | |
2028 \ | |
2029 product(uintx, PausePadding, 1, \ | |
2030 "How much buffer to keep for pause time") \ | |
2031 \ | |
2032 product(uintx, PromotedPadding, 3, \ | |
2033 "How much buffer to keep for promotion failure") \ | |
2034 \ | |
2035 product(uintx, SurvivorPadding, 3, \ | |
2036 "How much buffer to keep for survivor overflow") \ | |
2037 \ | |
2038 product(uintx, AdaptivePermSizeWeight, 20, \ | |
2039 "Weight for perm gen exponential resizing, between 0 and 100") \ | |
2040 \ | |
2041 product(uintx, PermGenPadding, 3, \ | |
2042 "How much buffer to keep for perm gen sizing") \ | |
2043 \ | |
2044 product(uintx, ThresholdTolerance, 10, \ | |
2045 "Allowed collection cost difference between generations") \ | |
2046 \ | |
2047 product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \ | |
1064 | 2048 "If collection costs are within margin, reduce both by full " \ |
2049 "delta") \ | |
0 | 2050 \ |
2051 product(uintx, YoungGenerationSizeIncrement, 20, \ | |
2052 "Adaptive size percentage change in young generation") \ | |
2053 \ | |
2054 product(uintx, YoungGenerationSizeSupplement, 80, \ | |
2055 "Supplement to YoungedGenerationSizeIncrement used at startup") \ | |
2056 \ | |
2057 product(uintx, YoungGenerationSizeSupplementDecay, 8, \ | |
2058 "Decay factor to YoungedGenerationSizeSupplement") \ | |
2059 \ | |
2060 product(uintx, TenuredGenerationSizeIncrement, 20, \ | |
2061 "Adaptive size percentage change in tenured generation") \ | |
2062 \ | |
2063 product(uintx, TenuredGenerationSizeSupplement, 80, \ | |
2064 "Supplement to TenuredGenerationSizeIncrement used at startup") \ | |
2065 \ | |
2066 product(uintx, TenuredGenerationSizeSupplementDecay, 2, \ | |
2067 "Decay factor to TenuredGenerationSizeIncrement") \ | |
2068 \ | |
1783 | 2069 product(uintx, MaxGCPauseMillis, max_uintx, \ |
751 | 2070 "Adaptive size policy maximum GC pause time goal in msec, " \ |
2071 "or (G1 Only) the max. GC time per MMU time slice") \ | |
2072 \ | |
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
|
2073 product(uintx, GCPauseIntervalMillis, 0, \ |
751 | 2074 "Time slice for MMU specification") \ |
0 | 2075 \ |
2076 product(uintx, MaxGCMinorPauseMillis, max_uintx, \ | |
2077 "Adaptive size policy maximum GC minor pause time goal in msec") \ | |
2078 \ | |
2079 product(uintx, GCTimeRatio, 99, \ | |
2080 "Adaptive size policy application time to GC time ratio") \ | |
2081 \ | |
2082 product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \ | |
2083 "Adaptive size scale down factor for shrinking") \ | |
2084 \ | |
2085 product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \ | |
2086 "Adaptive size decays the major cost for long major intervals") \ | |
2087 \ | |
2088 product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \ | |
2089 "Time scale over which major costs decay") \ | |
2090 \ | |
2091 product(uintx, MinSurvivorRatio, 3, \ | |
2092 "Minimum ratio of young generation/survivor space size") \ | |
2093 \ | |
2094 product(uintx, InitialSurvivorRatio, 8, \ | |
2095 "Initial ratio of eden/survivor space size") \ | |
2096 \ | |
2097 product(uintx, BaseFootPrintEstimate, 256*M, \ | |
2098 "Estimate of footprint other than Java Heap") \ | |
2099 \ | |
2100 product(bool, UseGCOverheadLimit, true, \ | |
2101 "Use policy to limit of proportion of time spent in GC " \ | |
2102 "before an OutOfMemory error is thrown") \ | |
2103 \ | |
2104 product(uintx, GCTimeLimit, 98, \ | |
2105 "Limit of proportion of time spent in GC before an OutOfMemory" \ | |
2106 "error is thrown (used with GCHeapFreeLimit)") \ | |
2107 \ | |
2108 product(uintx, GCHeapFreeLimit, 2, \ | |
2109 "Minimum percentage of free space after a full GC before an " \ | |
2110 "OutOfMemoryError is thrown (used with GCTimeLimit)") \ | |
2111 \ | |
2112 develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \ | |
2113 "Number of consecutive collections before gc time limit fires") \ | |
2114 \ | |
2115 product(bool, PrintAdaptiveSizePolicy, false, \ | |
2116 "Print information about AdaptiveSizePolicy") \ | |
2117 \ | |
2118 product(intx, PrefetchCopyIntervalInBytes, -1, \ | |
2119 "How far ahead to prefetch destination area (<= 0 means off)") \ | |
2120 \ | |
2121 product(intx, PrefetchScanIntervalInBytes, -1, \ | |
2122 "How far ahead to prefetch scan area (<= 0 means off)") \ | |
2123 \ | |
2124 product(intx, PrefetchFieldsAhead, -1, \ | |
2125 "How many fields ahead to prefetch in oop scan (<= 0 means off)") \ | |
2126 \ | |
2127 diagnostic(bool, VerifyBeforeExit, trueInDebug, \ | |
2128 "Verify system before exiting") \ | |
2129 \ | |
2130 diagnostic(bool, VerifyBeforeGC, false, \ | |
2131 "Verify memory system before GC") \ | |
2132 \ | |
2133 diagnostic(bool, VerifyAfterGC, false, \ | |
2134 "Verify memory system after GC") \ | |
2135 \ | |
2136 diagnostic(bool, VerifyDuringGC, false, \ | |
2137 "Verify memory system during GC (between phases)") \ | |
2138 \ | |
390 | 2139 diagnostic(bool, GCParallelVerificationEnabled, true, \ |
2140 "Enable parallel memory system verification") \ | |
2141 \ | |
1166 | 2142 diagnostic(bool, DeferInitialCardMark, false, \ |
2143 "When +ReduceInitialCardMarks, explicitly defer any that " \ | |
2144 "may arise from new_pre_store_barrier") \ | |
2145 \ | |
0 | 2146 diagnostic(bool, VerifyRememberedSets, false, \ |
2147 "Verify GC remembered sets") \ | |
2148 \ | |
2149 diagnostic(bool, VerifyObjectStartArray, true, \ | |
2150 "Verify GC object start array if verify before/after") \ | |
2151 \ | |
2152 product(bool, DisableExplicitGC, false, \ | |
2153 "Tells whether calling System.gc() does a full GC") \ | |
2154 \ | |
2155 notproduct(bool, CheckMemoryInitialization, false, \ | |
2156 "Checks memory initialization") \ | |
2157 \ | |
2158 product(bool, CollectGen0First, false, \ | |
2159 "Collect youngest generation before each full GC") \ | |
2160 \ | |
2161 diagnostic(bool, BindCMSThreadToCPU, false, \ | |
2162 "Bind CMS Thread to CPU if possible") \ | |
2163 \ | |
2164 diagnostic(uintx, CPUForCMSThread, 0, \ | |
2165 "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \ | |
2166 \ | |
2167 product(bool, BindGCTaskThreadsToCPUs, false, \ | |
2168 "Bind GCTaskThreads to CPUs if possible") \ | |
2169 \ | |
2170 product(bool, UseGCTaskAffinity, false, \ | |
2171 "Use worker affinity when asking for GCTasks") \ | |
2172 \ | |
2173 product(uintx, ProcessDistributionStride, 4, \ | |
2174 "Stride through processors when distributing processes") \ | |
2175 \ | |
2176 product(uintx, CMSCoordinatorYieldSleepCount, 10, \ | |
2177 "number of times the coordinator GC thread will sleep while " \ | |
2178 "yielding before giving up and resuming GC") \ | |
2179 \ | |
2180 product(uintx, CMSYieldSleepCount, 0, \ | |
2181 "number of times a GC thread (minus the coordinator) " \ | |
2182 "will sleep while yielding before giving up and resuming GC") \ | |
2183 \ | |
2184 /* gc tracing */ \ | |
2185 manageable(bool, PrintGC, false, \ | |
2186 "Print message at garbage collect") \ | |
2187 \ | |
2188 manageable(bool, PrintGCDetails, false, \ | |
2189 "Print more details at garbage collect") \ | |
2190 \ | |
2191 manageable(bool, PrintGCDateStamps, false, \ | |
2192 "Print date stamps at garbage collect") \ | |
2193 \ | |
2194 manageable(bool, PrintGCTimeStamps, false, \ | |
2195 "Print timestamps at garbage collect") \ | |
2196 \ | |
2197 product(bool, PrintGCTaskTimeStamps, false, \ | |
2198 "Print timestamps for individual gc worker thread tasks") \ | |
2199 \ | |
2200 develop(intx, ConcGCYieldTimeout, 0, \ | |
2201 "If non-zero, assert that GC threads yield within this # of ms.") \ | |
2202 \ | |
2203 notproduct(bool, TraceMarkSweep, false, \ | |
2204 "Trace mark sweep") \ | |
2205 \ | |
2206 product(bool, PrintReferenceGC, false, \ | |
2207 "Print times spent handling reference objects during GC " \ | |
2208 " (enabled only when PrintGCDetails)") \ | |
2209 \ | |
2210 develop(bool, TraceReferenceGC, false, \ | |
2211 "Trace handling of soft/weak/final/phantom references") \ | |
2212 \ | |
2213 develop(bool, TraceFinalizerRegistration, false, \ | |
2214 "Trace registration of final references") \ | |
2215 \ | |
2216 notproduct(bool, TraceScavenge, false, \ | |
2217 "Trace scavenge") \ | |
2218 \ | |
2219 product_rw(bool, TraceClassLoading, false, \ | |
2220 "Trace all classes loaded") \ | |
2221 \ | |
2222 product(bool, TraceClassLoadingPreorder, false, \ | |
2223 "Trace all classes loaded in order referenced (not loaded)") \ | |
2224 \ | |
2225 product_rw(bool, TraceClassUnloading, false, \ | |
2226 "Trace unloading of classes") \ | |
2227 \ | |
2228 product_rw(bool, TraceLoaderConstraints, false, \ | |
2229 "Trace loader constraints") \ | |
2230 \ | |
2231 product(bool, TraceGen0Time, false, \ | |
2232 "Trace accumulated time for Gen 0 collection") \ | |
2233 \ | |
2234 product(bool, TraceGen1Time, false, \ | |
2235 "Trace accumulated time for Gen 1 collection") \ | |
2236 \ | |
2237 product(bool, PrintTenuringDistribution, false, \ | |
2238 "Print tenuring age information") \ | |
2239 \ | |
2240 product_rw(bool, PrintHeapAtGC, false, \ | |
2241 "Print heap layout before and after each GC") \ | |
2242 \ | |
838
0316eac49d5a
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
779
diff
changeset
|
2243 product_rw(bool, PrintHeapAtGCExtended, false, \ |
0316eac49d5a
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
779
diff
changeset
|
2244 "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
|
2245 "when -XX:+PrintHeapAtGC is set") \ |
0316eac49d5a
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
779
diff
changeset
|
2246 \ |
0 | 2247 product(bool, PrintHeapAtSIGBREAK, true, \ |
2248 "Print heap layout in response to SIGBREAK") \ | |
2249 \ | |
615
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
2250 manageable(bool, PrintClassHistogramBeforeFullGC, false, \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
2251 "Print a class histogram before any major stop-world GC") \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
2252 \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
2253 manageable(bool, PrintClassHistogramAfterFullGC, false, \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
2254 "Print a class histogram after any major stop-world GC") \ |
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
570
diff
changeset
|
2255 \ |
0 | 2256 manageable(bool, PrintClassHistogram, false, \ |
2257 "Print a histogram of class instances") \ | |
2258 \ | |
2259 develop(bool, TraceWorkGang, false, \ | |
2260 "Trace activities of work gangs") \ | |
2261 \ | |
2262 product(bool, TraceParallelOldGCTasks, false, \ | |
2263 "Trace multithreaded GC activity") \ | |
2264 \ | |
2265 develop(bool, TraceBlockOffsetTable, false, \ | |
2266 "Print BlockOffsetTable maps") \ | |
2267 \ | |
2268 develop(bool, TraceCardTableModRefBS, false, \ | |
2269 "Print CardTableModRefBS maps") \ | |
2270 \ | |
2271 develop(bool, TraceGCTaskManager, false, \ | |
2272 "Trace actions of the GC task manager") \ | |
2273 \ | |
2274 develop(bool, TraceGCTaskQueue, false, \ | |
2275 "Trace actions of the GC task queues") \ | |
2276 \ | |
4095
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4067
diff
changeset
|
2277 diagnostic(bool, TraceGCTaskThread, false, \ |
0 | 2278 "Trace actions of the GC task threads") \ |
2279 \ | |
2280 product(bool, PrintParallelOldGCPhaseTimes, false, \ | |
2281 "Print the time taken by each parallel old gc phase." \ | |
2282 "PrintGCDetails must also be enabled.") \ | |
2283 \ | |
2284 develop(bool, TraceParallelOldGCMarkingPhase, false, \ | |
2285 "Trace parallel old gc marking phase") \ | |
2286 \ | |
2287 develop(bool, TraceParallelOldGCSummaryPhase, false, \ | |
2288 "Trace parallel old gc summary phase") \ | |
2289 \ | |
2290 develop(bool, TraceParallelOldGCCompactionPhase, false, \ | |
2291 "Trace parallel old gc compaction phase") \ | |
2292 \ | |
2293 develop(bool, TraceParallelOldGCDensePrefix, false, \ | |
2294 "Trace parallel old gc dense prefix computation") \ | |
2295 \ | |
2296 develop(bool, IgnoreLibthreadGPFault, false, \ | |
2297 "Suppress workaround for libthread GP fault") \ | |
2298 \ | |
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
|
2299 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
|
2300 "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
|
2301 "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
|
2302 \ |
3767
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3418
diff
changeset
|
2303 /* GC log rotation setting */ \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3418
diff
changeset
|
2304 \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3418
diff
changeset
|
2305 product(bool, UseGCLogFileRotation, false, \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3418
diff
changeset
|
2306 "Prevent large gclog file for long running app. " \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3418
diff
changeset
|
2307 "Requires -Xloggc:<filename>") \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3418
diff
changeset
|
2308 \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3418
diff
changeset
|
2309 product(uintx, NumberOfGCLogFiles, 0, \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3418
diff
changeset
|
2310 "Number of gclog files in rotation, " \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3418
diff
changeset
|
2311 "Default: 0, no rotation") \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3418
diff
changeset
|
2312 \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3418
diff
changeset
|
2313 product(uintx, GCLogFileSize, 0, \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3418
diff
changeset
|
2314 "GC log file size, Default: 0 bytes, no rotation " \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3418
diff
changeset
|
2315 "Only valid with UseGCLogFileRotation") \ |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
minqi
parents:
3418
diff
changeset
|
2316 \ |
0 | 2317 /* JVMTI heap profiling */ \ |
2318 \ | |
2319 diagnostic(bool, TraceJVMTIObjectTagging, false, \ | |
2320 "Trace JVMTI object tagging calls") \ | |
2321 \ | |
2322 diagnostic(bool, VerifyBeforeIteration, false, \ | |
2323 "Verify memory system before JVMTI iteration") \ | |
2324 \ | |
2325 /* compiler interface */ \ | |
2326 \ | |
2327 develop(bool, CIPrintCompilerName, false, \ | |
2328 "when CIPrint is active, print the name of the active compiler") \ | |
2329 \ | |
2330 develop(bool, CIPrintCompileQueue, false, \ | |
2331 "display the contents of the compile queue whenever a " \ | |
2332 "compilation is enqueued") \ | |
2333 \ | |
2334 develop(bool, CIPrintRequests, false, \ | |
2335 "display every request for compilation") \ | |
2336 \ | |
2337 product(bool, CITime, false, \ | |
2338 "collect timing information for compilation") \ | |
2339 \ | |
2340 develop(bool, CITimeEach, false, \ | |
2341 "display timing information after each successful compilation") \ | |
2342 \ | |
2343 develop(bool, CICountOSR, true, \ | |
2344 "use a separate counter when assigning ids to osr compilations") \ | |
2345 \ | |
2346 develop(bool, CICompileNatives, true, \ | |
2347 "compile native methods if supported by the compiler") \ | |
2348 \ | |
2349 develop_pd(bool, CICompileOSR, \ | |
2350 "compile on stack replacement methods if supported by the " \ | |
2351 "compiler") \ | |
2352 \ | |
2353 develop(bool, CIPrintMethodCodes, false, \ | |
2354 "print method bytecodes of the compiled code") \ | |
2355 \ | |
2356 develop(bool, CIPrintTypeFlow, false, \ | |
2357 "print the results of ciTypeFlow analysis") \ | |
2358 \ | |
2359 develop(bool, CITraceTypeFlow, false, \ | |
2360 "detailed per-bytecode tracing of ciTypeFlow analysis") \ | |
2361 \ | |
2403 | 2362 develop(intx, OSROnlyBCI, -1, \ |
2363 "OSR only at this bci. Negative values mean exclude that bci") \ | |
2364 \ | |
0 | 2365 /* compiler */ \ |
2366 \ | |
2367 product(intx, CICompilerCount, CI_COMPILER_COUNT, \ | |
2368 "Number of compiler threads to run") \ | |
2369 \ | |
5336
f536a459c2d3
re-enable graph caching and the priority compilation queue
Lukas Stadler <lukas.stadler@jku.at>
parents:
5334
diff
changeset
|
2370 product(intx, CompilationPolicyChoice, NOT_GRAAL(0) GRAAL_ONLY(4), \ |
0 | 2371 "which compilation policy (0/1)") \ |
2372 \ | |
2373 develop(bool, UseStackBanging, true, \ | |
2374 "use stack banging for stack overflow checks (required for " \ | |
2375 "proper StackOverflow handling; disable only to measure cost " \ | |
2376 "of stackbanging)") \ | |
2377 \ | |
2378 develop(bool, UseStrictFP, true, \ | |
2379 "use strict fp if modifier strictfp is set") \ | |
2380 \ | |
2381 develop(bool, GenerateSynchronizationCode, true, \ | |
2382 "generate locking/unlocking code for synchronized methods and " \ | |
2383 "monitors") \ | |
2384 \ | |
2385 develop(bool, GenerateCompilerNullChecks, true, \ | |
2386 "Generate explicit null checks for loads/stores/calls") \ | |
2387 \ | |
2388 develop(bool, GenerateRangeChecks, true, \ | |
2389 "Generate range checks for array accesses") \ | |
2390 \ | |
2391 develop_pd(bool, ImplicitNullChecks, \ | |
2392 "generate code for implicit null checks") \ | |
2393 \ | |
2394 product(bool, PrintSafepointStatistics, false, \ | |
2395 "print statistics about safepoint synchronization") \ | |
2396 \ | |
2397 product(intx, PrintSafepointStatisticsCount, 300, \ | |
2398 "total number of safepoint statistics collected " \ | |
2399 "before printing them out") \ | |
2400 \ | |
2401 product(intx, PrintSafepointStatisticsTimeout, -1, \ | |
2402 "print safepoint statistics only when safepoint takes" \ | |
2403 " more than PrintSafepointSatisticsTimeout in millis") \ | |
2404 \ | |
1321
0f6600cee529
6934758: Expose the break down of clean up task time during safepoint.
xlu
parents:
1288
diff
changeset
|
2405 product(bool, TraceSafepointCleanupTime, false, \ |
0f6600cee529
6934758: Expose the break down of clean up task time during safepoint.
xlu
parents:
1288
diff
changeset
|
2406 "print the break down of clean up tasks performed during" \ |
0f6600cee529
6934758: Expose the break down of clean up task time during safepoint.
xlu
parents:
1288
diff
changeset
|
2407 " safepoint") \ |
0f6600cee529
6934758: Expose the break down of clean up task time during safepoint.
xlu
parents:
1288
diff
changeset
|
2408 \ |
0 | 2409 product(bool, Inline, true, \ |
2410 "enable inlining") \ | |
2411 \ | |
2412 product(bool, ClipInlining, true, \ | |
2413 "clip inlining if aggregate method exceeds DesiredMethodLimit") \ | |
2414 \ | |
2415 develop(bool, UseCHA, true, \ | |
2416 "enable CHA") \ | |
2417 \ | |
2418 product(bool, UseTypeProfile, true, \ | |
2419 "Check interpreter profile for historically monomorphic calls") \ | |
2420 \ | |
2421 notproduct(bool, TimeCompiler, false, \ | |
2422 "time the compiler") \ | |
2423 \ | |
2424 diagnostic(bool, PrintInlining, false, \ | |
2425 "prints inlining optimizations") \ | |
2426 \ | |
643
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
642
diff
changeset
|
2427 product(bool, UsePopCountInstruction, false, \ |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
642
diff
changeset
|
2428 "Use population count instruction") \ |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
642
diff
changeset
|
2429 \ |
0 | 2430 develop(bool, EagerInitialization, false, \ |
2431 "Eagerly initialize classes if possible") \ | |
2432 \ | |
2433 develop(bool, TraceMethodReplacement, false, \ | |
2434 "Print when methods are replaced do to recompilation") \ | |
2435 \ | |
2436 develop(bool, PrintMethodFlushing, false, \ | |
2437 "print the nmethods being flushed") \ | |
2438 \ | |
2439 develop(bool, UseRelocIndex, false, \ | |
2440 "use an index to speed random access to relocations") \ | |
2441 \ | |
2442 develop(bool, StressCodeBuffers, false, \ | |
2443 "Exercise code buffer expansion and other rare state changes") \ | |
2444 \ | |
2445 diagnostic(bool, DebugNonSafepoints, trueInDebug, \ | |
2446 "Generate extra debugging info for non-safepoints in nmethods") \ | |
2447 \ | |
4066 | 2448 product(bool, PrintVMOptions, false, \ |
1150 | 2449 "Print flags that appeared on the command line") \ |
0 | 2450 \ |
564 | 2451 product(bool, IgnoreUnrecognizedVMOptions, false, \ |
2452 "Ignore unrecognized VM options") \ | |
2453 \ | |
1150 | 2454 product(bool, PrintCommandLineFlags, false, \ |
2455 "Print flags specified on command line or set by ergonomics") \ | |
2456 \ | |
2457 product(bool, PrintFlagsInitial, false, \ | |
2458 "Print all VM flags before argument processing and exit VM") \ | |
2459 \ | |
2460 product(bool, PrintFlagsFinal, false, \ | |
2461 "Print all VM flags after argument and ergonomic processing") \ | |
2462 \ | |
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1749
diff
changeset
|
2463 notproduct(bool, PrintFlagsWithComments, false, \ |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1749
diff
changeset
|
2464 "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
|
2465 \ |
0 | 2466 diagnostic(bool, SerializeVMOutput, true, \ |
2467 "Use a mutex to serialize output to tty and hotspot.log") \ | |
2468 \ | |
2469 diagnostic(bool, DisplayVMOutput, true, \ | |
2470 "Display all VM output on the tty, independently of LogVMOutput") \ | |
2471 \ | |
2472 diagnostic(bool, LogVMOutput, trueInDebug, \ | |
2473 "Save VM output to hotspot.log, or to LogFile") \ | |
2474 \ | |
2475 diagnostic(ccstr, LogFile, NULL, \ | |
2476 "If LogVMOutput is on, save VM output to this file [hotspot.log]") \ | |
2477 \ | |
2478 product(ccstr, ErrorFile, NULL, \ | |
2479 "If an error occurs, save the error data to this file " \ | |
2480 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \ | |
2481 \ | |
2482 product(bool, DisplayVMOutputToStderr, false, \ | |
2483 "If DisplayVMOutput is true, display all VM output to stderr") \ | |
2484 \ | |
2485 product(bool, DisplayVMOutputToStdout, false, \ | |
2486 "If DisplayVMOutput is true, display all VM output to stdout") \ | |
2487 \ | |
2488 product(bool, UseHeavyMonitors, false, \ | |
2489 "use heavyweight instead of lightweight Java monitors") \ | |
2490 \ | |
6162 | 2491 product(bool, PrintStringTableStatistics, false, \ |
2492 "print statistics about the StringTable and SymbolTable") \ | |
2493 \ | |
0 | 2494 notproduct(bool, PrintSymbolTableSizeHistogram, false, \ |
2495 "print histogram of the symbol table") \ | |
2496 \ | |
2497 notproduct(bool, ExitVMOnVerifyError, false, \ | |
2498 "standard exit from VM if bytecode verify error " \ | |
2499 "(only in debug mode)") \ | |
2500 \ | |
2501 notproduct(ccstr, AbortVMOnException, NULL, \ | |
2502 "Call fatal if this exception is thrown. Example: " \ | |
2503 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \ | |
2504 \ | |
1684
66c5dadb4d61
6973308: Missing zero length check before repne scas in check_klass_subtype_slow_path()
kvn
parents:
1660
diff
changeset
|
2505 notproduct(ccstr, AbortVMOnExceptionMessage, NULL, \ |
66c5dadb4d61
6973308: Missing zero length check before repne scas in check_klass_subtype_slow_path()
kvn
parents:
1660
diff
changeset
|
2506 "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
|
2507 "has this message.") \ |
66c5dadb4d61
6973308: Missing zero length check before repne scas in check_klass_subtype_slow_path()
kvn
parents:
1660
diff
changeset
|
2508 \ |
0 | 2509 develop(bool, DebugVtables, false, \ |
2510 "add debugging code to vtable dispatch") \ | |
2511 \ | |
2512 develop(bool, PrintVtables, false, \ | |
2513 "print vtables when printing klass") \ | |
2514 \ | |
2515 notproduct(bool, PrintVtableStats, false, \ | |
2516 "print vtables stats at end of run") \ | |
2517 \ | |
2518 develop(bool, TraceCreateZombies, false, \ | |
2519 "trace creation of zombie nmethods") \ | |
2520 \ | |
2521 notproduct(bool, IgnoreLockingAssertions, false, \ | |
2522 "disable locking assertions (for speed)") \ | |
2523 \ | |
2524 product(bool, RangeCheckElimination, true, \ | |
2525 "Split loop iterations to eliminate range checks") \ | |
2526 \ | |
2527 develop_pd(bool, UncommonNullCast, \ | |
2528 "track occurrences of null in casts; adjust compiler tactics") \ | |
2529 \ | |
2530 develop(bool, TypeProfileCasts, true, \ | |
2531 "treat casts like calls for purposes of type profiling") \ | |
2532 \ | |
2533 develop(bool, DelayCompilationDuringStartup, true, \ | |
2534 "Delay invoking the compiler until main application class is " \ | |
2535 "loaded") \ | |
2536 \ | |
2537 develop(bool, CompileTheWorld, false, \ | |
2538 "Compile all methods in all classes in bootstrap class path " \ | |
2539 "(stress test)") \ | |
2540 \ | |
2541 develop(bool, CompileTheWorldPreloadClasses, true, \ | |
2542 "Preload all classes used by a class before start loading") \ | |
2543 \ | |
1188
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1179
diff
changeset
|
2544 notproduct(intx, CompileTheWorldSafepointInterval, 100, \ |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1179
diff
changeset
|
2545 "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
|
2546 \ |
0 | 2547 develop(bool, FillDelaySlots, true, \ |
2548 "Fill delay slots (on SPARC only)") \ | |
2549 \ | |
2550 develop(bool, TimeLivenessAnalysis, false, \ | |
2551 "Time computation of bytecode liveness analysis") \ | |
2552 \ | |
2553 develop(bool, TraceLivenessGen, false, \ | |
2554 "Trace the generation of liveness analysis information") \ | |
2555 \ | |
2556 notproduct(bool, TraceLivenessQuery, false, \ | |
2557 "Trace queries of liveness analysis information") \ | |
2558 \ | |
2559 notproduct(bool, CollectIndexSetStatistics, false, \ | |
2560 "Collect information about IndexSets") \ | |
2561 \ | |
2562 develop(bool, UseLoopSafepoints, true, \ | |
2563 "Generate Safepoint nodes in every loop") \ | |
2564 \ | |
2565 develop(intx, FastAllocateSizeLimit, 128*K, \ | |
2566 /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \ | |
2567 "Inline allocations larger than this in doublewords must go slow")\ | |
2568 \ | |
2569 product(bool, AggressiveOpts, false, \ | |
2570 "Enable aggressive optimizations - see arguments.cpp") \ | |
2571 \ | |
192
6d13fcb3663f
6714404: Add UseStringCache switch to enable String caching under AggressiveOpts
kvn
parents:
174
diff
changeset
|
2572 product(bool, UseStringCache, false, \ |
6d13fcb3663f
6714404: Add UseStringCache switch to enable String caching under AggressiveOpts
kvn
parents:
174
diff
changeset
|
2573 "Enable String cache capabilities on String.java") \ |
6d13fcb3663f
6714404: Add UseStringCache switch to enable String caching under AggressiveOpts
kvn
parents:
174
diff
changeset
|
2574 \ |
0 | 2575 /* statistics */ \ |
2576 develop(bool, CountCompiledCalls, false, \ | |
2577 "counts method invocations") \ | |
2578 \ | |
2579 notproduct(bool, CountRuntimeCalls, false, \ | |
2580 "counts VM runtime calls") \ | |
2581 \ | |
2582 develop(bool, CountJNICalls, false, \ | |
2583 "counts jni method invocations") \ | |
2584 \ | |
2585 notproduct(bool, CountJVMCalls, false, \ | |
2586 "counts jvm method invocations") \ | |
2587 \ | |
2588 notproduct(bool, CountRemovableExceptions, false, \ | |
2589 "count exceptions that could be replaced by branches due to " \ | |
2590 "inlining") \ | |
2591 \ | |
2592 notproduct(bool, ICMissHistogram, false, \ | |
2593 "produce histogram of IC misses") \ | |
2594 \ | |
2595 notproduct(bool, PrintClassStatistics, false, \ | |
2596 "prints class statistics at end of run") \ | |
2597 \ | |
2598 notproduct(bool, PrintMethodStatistics, false, \ | |
2599 "prints method statistics at end of run") \ | |
2600 \ | |
2601 /* interpreter */ \ | |
2602 develop(bool, ClearInterpreterLocals, false, \ | |
2603 "Always clear local variables of interpreter activations upon " \ | |
2604 "entry") \ | |
2605 \ | |
2606 product_pd(bool, RewriteBytecodes, \ | |
2607 "Allow rewriting of bytecodes (bytecodes are not immutable)") \ | |
2608 \ | |
2609 product_pd(bool, RewriteFrequentPairs, \ | |
2610 "Rewrite frequently used bytecode pairs into a single bytecode") \ | |
2611 \ | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
76
diff
changeset
|
2612 diagnostic(bool, PrintInterpreter, false, \ |
0 | 2613 "Prints the generated interpreter code") \ |
2614 \ | |
2615 product(bool, UseInterpreter, true, \ | |
2616 "Use interpreter for non-compiled methods") \ | |
2617 \ | |
2618 develop(bool, UseFastSignatureHandlers, true, \ | |
2619 "Use fast signature handlers for native calls") \ | |
2620 \ | |
2621 product(bool, UseLoopCounter, true, \ | |
2622 "Increment invocation counter on backward branch") \ | |
2623 \ | |
2624 product(bool, UseFastEmptyMethods, true, \ | |
2625 "Use fast method entry code for empty methods") \ | |
2626 \ | |
2627 product(bool, UseFastAccessorMethods, true, \ | |
2628 "Use fast method entry code for accessor methods") \ | |
2629 \ | |
2630 product_pd(bool, UseOnStackReplacement, \ | |
2631 "Use on stack replacement, calls runtime if invoc. counter " \ | |
2632 "overflows in loop") \ | |
2633 \ | |
2634 notproduct(bool, TraceOnStackReplacement, false, \ | |
2635 "Trace on stack replacement") \ | |
2636 \ | |
2637 product_pd(bool, PreferInterpreterNativeStubs, \ | |
2638 "Use always interpreter stubs for native methods invoked via " \ | |
2639 "interpreter") \ | |
2640 \ | |
2641 develop(bool, CountBytecodes, false, \ | |
2642 "Count number of bytecodes executed") \ | |
2643 \ | |
2644 develop(bool, PrintBytecodeHistogram, false, \ | |
2645 "Print histogram of the executed bytecodes") \ | |
2646 \ | |
2647 develop(bool, PrintBytecodePairHistogram, false, \ | |
2648 "Print histogram of the executed bytecode pairs") \ | |
2649 \ | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
76
diff
changeset
|
2650 diagnostic(bool, PrintSignatureHandlers, false, \ |
0 | 2651 "Print code generated for native method signature handlers") \ |
2652 \ | |
2653 develop(bool, VerifyOops, false, \ | |
2654 "Do plausibility checks for oops") \ | |
2655 \ | |
2656 develop(bool, CheckUnhandledOops, false, \ | |
2657 "Check for unhandled oops in VM code") \ | |
2658 \ | |
2659 develop(bool, VerifyJNIFields, trueInDebug, \ | |
2660 "Verify jfieldIDs for instance fields") \ | |
2661 \ | |
2662 notproduct(bool, VerifyJNIEnvThread, false, \ | |
2663 "Verify JNIEnv.thread == Thread::current() when entering VM " \ | |
2664 "from JNI") \ | |
2665 \ | |
2666 develop(bool, VerifyFPU, false, \ | |
2667 "Verify FPU state (check for NaN's, etc.)") \ | |
2668 \ | |
2669 develop(bool, VerifyThread, false, \ | |
2670 "Watch the thread register for corruption (SPARC only)") \ | |
2671 \ | |
2672 develop(bool, VerifyActivationFrameSize, false, \ | |
2673 "Verify that activation frame didn't become smaller than its " \ | |
2674 "minimal size") \ | |
2675 \ | |
2676 develop(bool, TraceFrequencyInlining, false, \ | |
2677 "Trace frequency based inlining") \ | |
2678 \ | |
2679 develop_pd(bool, InlineIntrinsics, \ | |
2680 "Inline intrinsics that can be statically resolved") \ | |
2681 \ | |
2682 product_pd(bool, ProfileInterpreter, \ | |
2683 "Profile at the bytecode level during interpretation") \ | |
2684 \ | |
2685 develop_pd(bool, ProfileTraps, \ | |
2686 "Profile deoptimization traps at the bytecode level") \ | |
2687 \ | |
2688 product(intx, ProfileMaturityPercentage, 20, \ | |
2689 "number of method invocations/branches (expressed as % of " \ | |
2690 "CompileThreshold) before using the method's profile") \ | |
2691 \ | |
2692 develop(bool, PrintMethodData, false, \ | |
2693 "Print the results of +ProfileInterpreter at end of run") \ | |
2694 \ | |
2695 develop(bool, VerifyDataPointer, trueInDebug, \ | |
2696 "Verify the method data pointer during interpreter profiling") \ | |
2697 \ | |
2698 develop(bool, VerifyCompiledCode, false, \ | |
2699 "Include miscellaneous runtime verifications in nmethod code; " \ | |
1064 | 2700 "default off because it disturbs nmethod size heuristics") \ |
0 | 2701 \ |
1119
547f81740344
6361589: Print out stack trace for target thread of GC crash
minqi
parents:
1064
diff
changeset
|
2702 notproduct(bool, CrashGCForDumpingJavaThread, false, \ |
547f81740344
6361589: Print out stack trace for target thread of GC crash
minqi
parents:
1064
diff
changeset
|
2703 "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
|
2704 "Test only") \ |
0 | 2705 \ |
2706 /* compilation */ \ | |
2707 product(bool, UseCompiler, true, \ | |
2708 "use compilation") \ | |
2709 \ | |
2710 develop(bool, TraceCompilationPolicy, false, \ | |
2711 "Trace compilation policy") \ | |
2712 \ | |
2713 develop(bool, TimeCompilationPolicy, false, \ | |
2714 "Time the compilation policy") \ | |
2715 \ | |
2716 product(bool, UseCounterDecay, true, \ | |
2717 "adjust recompilation counters") \ | |
2718 \ | |
2719 develop(intx, CounterHalfLifeTime, 30, \ | |
2720 "half-life time of invocation counters (in secs)") \ | |
2721 \ | |
2722 develop(intx, CounterDecayMinIntervalLength, 500, \ | |
2723 "Min. ms. between invocation of CounterDecay") \ | |
2724 \ | |
2725 product(bool, AlwaysCompileLoopMethods, false, \ | |
2726 "when using recompilation, never interpret methods " \ | |
2727 "containing loops") \ | |
2728 \ | |
2729 product(bool, DontCompileHugeMethods, true, \ | |
2730 "don't compile methods > HugeMethodLimit") \ | |
2731 \ | |
2732 /* Bytecode escape analysis estimation. */ \ | |
2733 product(bool, EstimateArgEscape, true, \ | |
2734 "Analyze bytecodes to estimate escape state of arguments") \ | |
2735 \ | |
2736 product(intx, BCEATraceLevel, 0, \ | |
2737 "How much tracing to do of bytecode escape analysis estimates") \ | |
2738 \ | |
2739 product(intx, MaxBCEAEstimateLevel, 5, \ | |
2740 "Maximum number of nested calls that are analyzed by BC EA.") \ | |
2741 \ | |
2742 product(intx, MaxBCEAEstimateSize, 150, \ | |
2743 "Maximum bytecode size of a method to be analyzed by BC EA.") \ | |
2744 \ | |
2745 product(intx, AllocatePrefetchStyle, 1, \ | |
2746 "0 = no prefetch, " \ | |
2747 "1 = prefetch instructions for each allocation, " \ | |
1367
9e321dcfa5b7
6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents:
1366
diff
changeset
|
2748 "2 = use TLAB watermark to gate allocation prefetch, " \ |
9e321dcfa5b7
6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents:
1366
diff
changeset
|
2749 "3 = use BIS instruction on Sparc for allocation prefetch") \ |
0 | 2750 \ |
2751 product(intx, AllocatePrefetchDistance, -1, \ | |
2752 "Distance to prefetch ahead of allocation pointer") \ | |
2753 \ | |
3854 | 2754 product(intx, AllocatePrefetchLines, 3, \ |
2755 "Number of lines to prefetch ahead of array allocation pointer") \ | |
2756 \ | |
2757 product(intx, AllocateInstancePrefetchLines, 1, \ | |
2758 "Number of lines to prefetch ahead of instance allocation pointer") \ | |
0 | 2759 \ |
2760 product(intx, AllocatePrefetchStepSize, 16, \ | |
2761 "Step size in bytes of sequential prefetch instructions") \ | |
2762 \ | |
2763 product(intx, AllocatePrefetchInstr, 0, \ | |
2764 "Prefetch instruction to prefetch ahead of allocation pointer") \ | |
2765 \ | |
2766 /* deoptimization */ \ | |
2607
008adfd6d850
Fixed the stateBefore of invokes and monitorenter instructions to include the arguments of the instruction.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
2492
diff
changeset
|
2767 product(bool, TraceDeoptimization, false, \ |
0 | 2768 "Trace deoptimization") \ |
2769 \ | |
4668
3dbcd1013cc8
added flag PrintDeoptimizationDetails
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4561
diff
changeset
|
2770 product(bool, PrintDeoptimizationDetails, false, \ |
3dbcd1013cc8
added flag PrintDeoptimizationDetails
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4561
diff
changeset
|
2771 "Print more information about deoptimization") \ |
3dbcd1013cc8
added flag PrintDeoptimizationDetails
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4561
diff
changeset
|
2772 \ |
0 | 2773 develop(bool, DebugDeoptimization, false, \ |
2774 "Tracing various information while debugging deoptimization") \ | |
2775 \ | |
2776 product(intx, SelfDestructTimer, 0, \ | |
2777 "Will cause VM to terminate after a given time (in minutes) " \ | |
2778 "(0 means off)") \ | |
2779 \ | |
2780 product(intx, MaxJavaStackTraceDepth, 1024, \ | |
2781 "Max. no. of lines in the stack trace for Java exceptions " \ | |
2782 "(0 means all)") \ | |
2783 \ | |
3328
277d0f6ca64d
7005503: Make GuaranteedSafepointInterval a diagnostic flag
kevinw
parents:
3255
diff
changeset
|
2784 NOT_EMBEDDED(diagnostic(intx, GuaranteedSafepointInterval, 1000, \ |
0 | 2785 "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
|
2786 "(0 means none)")) \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
2787 \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
2788 EMBEDDED_ONLY(product(intx, GuaranteedSafepointInterval, 0, \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
2789 "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
|
2790 "(0 means none)")) \ |
0 | 2791 \ |
2792 product(intx, SafepointTimeoutDelay, 10000, \ | |
2793 "Delay in milliseconds for option SafepointTimeout") \ | |
2794 \ | |
4945
cfdfbeac0a5b
7145345: Code cache sweeper must cooperate with safepoints
iveresov
parents:
4875
diff
changeset
|
2795 product(intx, NmethodSweepFraction, 16, \ |
0 | 2796 "Number of invocations of sweeper to cover all nmethods") \ |
2797 \ | |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1513
diff
changeset
|
2798 product(intx, NmethodSweepCheckInterval, 5, \ |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1513
diff
changeset
|
2799 "Compilers wake up every n seconds to possibly sweep nmethods") \ |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1513
diff
changeset
|
2800 \ |
3384
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
2801 notproduct(bool, LogSweeper, false, \ |
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
2802 "Keep a ring buffer of sweeper activity") \ |
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
2803 \ |
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
2804 notproduct(intx, SweeperLogEntries, 1024, \ |
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
2805 "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
|
2806 \ |
0 | 2807 notproduct(intx, MemProfilingInterval, 500, \ |
2808 "Time between each invocation of the MemProfiler") \ | |
2809 \ | |
2810 develop(intx, MallocCatchPtr, -1, \ | |
2811 "Hit breakpoint when mallocing/freeing this pointer") \ | |
2812 \ | |
2813 notproduct(intx, AssertRepeat, 1, \ | |
2814 "number of times to evaluate expression in assert " \ | |
2815 "(to estimate overhead); only works with -DUSE_REPEATED_ASSERTS") \ | |
2816 \ | |
2817 notproduct(ccstrlist, SuppressErrorAt, "", \ | |
2818 "List of assertions (file:line) to muzzle") \ | |
2819 \ | |
2820 notproduct(uintx, HandleAllocationLimit, 1024, \ | |
2821 "Threshold for HandleMark allocation when +TraceHandleAllocation "\ | |
2822 "is used") \ | |
2823 \ | |
2824 develop(uintx, TotalHandleAllocationLimit, 1024, \ | |
2825 "Threshold for total handle allocation when " \ | |
2826 "+TraceHandleAllocation is used") \ | |
2827 \ | |
2828 develop(intx, StackPrintLimit, 100, \ | |
2829 "number of stack frames to print in VM-level stack dump") \ | |
2830 \ | |
2831 notproduct(intx, MaxElementPrintSize, 256, \ | |
2832 "maximum number of elements to print") \ | |
2833 \ | |
2834 notproduct(intx, MaxSubklassPrintSize, 4, \ | |
2835 "maximum number of subklasses to print when printing klass") \ | |
2836 \ | |
1157
c3b315a0d58a
6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents:
1150
diff
changeset
|
2837 product(intx, MaxInlineLevel, 9, \ |
0 | 2838 "maximum number of nested calls that are inlined") \ |
2839 \ | |
1157
c3b315a0d58a
6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents:
1150
diff
changeset
|
2840 product(intx, MaxRecursiveInlineLevel, 1, \ |
0 | 2841 "maximum number of nested recursive calls that are inlined") \ |
2842 \ | |
675 | 2843 product_pd(intx, InlineSmallCode, \ |
0 | 2844 "Only inline already compiled methods if their code size is " \ |
2845 "less than this") \ | |
2846 \ | |
2847 product(intx, MaxInlineSize, 35, \ | |
2848 "maximum bytecode size of a method to be inlined") \ | |
2849 \ | |
2850 product_pd(intx, FreqInlineSize, \ | |
2851 "maximum bytecode size of a frequent method to be inlined") \ | |
2852 \ | |
1157
c3b315a0d58a
6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents:
1150
diff
changeset
|
2853 product(intx, MaxTrivialSize, 6, \ |
0 | 2854 "maximum bytecode size of a trivial method to be inlined") \ |
2855 \ | |
1157
c3b315a0d58a
6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents:
1150
diff
changeset
|
2856 product(intx, MinInliningThreshold, 250, \ |
0 | 2857 "min. invocation count a method needs to have to be inlined") \ |
2858 \ | |
2859 develop(intx, MethodHistogramCutoff, 100, \ | |
2860 "cutoff value for method invoc. histogram (+CountCalls)") \ | |
2861 \ | |
2862 develop(intx, ProfilerNumberOfInterpretedMethods, 25, \ | |
2863 "# of interpreted methods to show in profile") \ | |
2864 \ | |
2865 develop(intx, ProfilerNumberOfCompiledMethods, 25, \ | |
2866 "# of compiled methods to show in profile") \ | |
2867 \ | |
2868 develop(intx, ProfilerNumberOfStubMethods, 25, \ | |
2869 "# of stub methods to show in profile") \ | |
2870 \ | |
2871 develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \ | |
2872 "# of runtime stub nodes to show in profile") \ | |
2873 \ | |
2874 product(intx, ProfileIntervalsTicks, 100, \ | |
2875 "# of ticks between printing of interval profile " \ | |
2876 "(+ProfileIntervals)") \ | |
2877 \ | |
2878 notproduct(intx, ScavengeALotInterval, 1, \ | |
2879 "Interval between which scavenge will occur with +ScavengeALot") \ | |
2880 \ | |
2881 notproduct(intx, FullGCALotInterval, 1, \ | |
2882 "Interval between which full gc will occur with +FullGCALot") \ | |
2883 \ | |
2884 notproduct(intx, FullGCALotStart, 0, \ | |
2885 "For which invocation to start FullGCAlot") \ | |
2886 \ | |
2887 notproduct(intx, FullGCALotDummies, 32*K, \ | |
2888 "Dummy object allocated with +FullGCALot, forcing all objects " \ | |
2889 "to move") \ | |
2890 \ | |
2891 develop(intx, DontYieldALotInterval, 10, \ | |
2892 "Interval between which yields will be dropped (milliseconds)") \ | |
2893 \ | |
2894 develop(intx, MinSleepInterval, 1, \ | |
2895 "Minimum sleep() interval (milliseconds) when " \ | |
2896 "ConvertSleepToYield is off (used for SOLARIS)") \ | |
2897 \ | |
2898 develop(intx, ProfilerPCTickThreshold, 15, \ | |
2899 "Number of ticks in a PC buckets to be a hotspot") \ | |
2900 \ | |
2901 notproduct(intx, DeoptimizeALotInterval, 5, \ | |
2902 "Number of exits until DeoptimizeALot kicks in") \ | |
2903 \ | |
2904 notproduct(intx, ZombieALotInterval, 5, \ | |
2905 "Number of exits until ZombieALot kicks in") \ | |
2906 \ | |
2907 develop(bool, StressNonEntrant, false, \ | |
2908 "Mark nmethods non-entrant at registration") \ | |
2909 \ | |
2910 diagnostic(intx, MallocVerifyInterval, 0, \ | |
2911 "if non-zero, verify C heap after every N calls to " \ | |
2912 "malloc/realloc/free") \ | |
2913 \ | |
2914 diagnostic(intx, MallocVerifyStart, 0, \ | |
2915 "if non-zero, start verifying C heap after Nth call to " \ | |
2916 "malloc/realloc/free") \ | |
2917 \ | |
4464
f304ba0d4e24
inlining seems stable but deoptimizes too frequently
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4140
diff
changeset
|
2918 product_pd(intx, TypeProfileWidth, \ |
0 | 2919 "number of receiver types to record in call/cast profile") \ |
2920 \ | |
2921 develop(intx, BciProfileWidth, 2, \ | |
2922 "number of return bci's to record in ret profile") \ | |
2923 \ | |
2924 product(intx, PerMethodRecompilationCutoff, 400, \ | |
2925 "After recompiling N times, stay in the interpreter (-1=>'Inf')") \ | |
2926 \ | |
1206
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1202
diff
changeset
|
2927 product(intx, PerBytecodeRecompilationCutoff, 200, \ |
0 | 2928 "Per-BCI limit on repeated recompilation (-1=>'Inf')") \ |
2929 \ | |
2930 product(intx, PerMethodTrapLimit, 100, \ | |
2931 "Limit on traps (of one kind) in a method (includes inlines)") \ | |
2932 \ | |
2933 product(intx, PerBytecodeTrapLimit, 4, \ | |
2934 "Limit on traps (of one kind) at a particular BCI") \ | |
2935 \ | |
2936 develop(intx, InlineFrequencyRatio, 20, \ | |
2937 "Ratio of call site execution to caller method invocation") \ | |
2938 \ | |
2939 develop_pd(intx, InlineFrequencyCount, \ | |
2940 "Count of call site execution necessary to trigger frequent " \ | |
2941 "inlining") \ | |
2942 \ | |
2943 develop(intx, InlineThrowCount, 50, \ | |
2944 "Force inlining of interpreted methods that throw this often") \ | |
2945 \ | |
2946 develop(intx, InlineThrowMaxSize, 200, \ | |
2947 "Force inlining of throwing methods smaller than this") \ | |
2948 \ | |
2949 develop(intx, ProfilerNodeSize, 1024, \ | |
2950 "Size in K to allocate for the Profile Nodes of each thread") \ | |
2951 \ | |
2952 product_pd(intx, PreInflateSpin, \ | |
2953 "Number of times to spin wait before inflation") \ | |
2954 \ | |
2955 /* gc parameters */ \ | |
1064 | 2956 product(uintx, InitialHeapSize, 0, \ |
2957 "Initial heap size (in bytes); zero means OldSize + NewSize") \ | |
2958 \ | |
2959 product(uintx, MaxHeapSize, ScaleForWordSize(96*M), \ | |
2960 "Maximum heap size (in bytes)") \ | |
2961 \ | |
2962 product(uintx, OldSize, ScaleForWordSize(4*M), \ | |
2963 "Initial tenured generation size (in bytes)") \ | |
2964 \ | |
1287
8911d8c0596f
6923123: Hotspot refuses to start when -Xmx4m or -Xms4m is specified
phh
parents:
1211
diff
changeset
|
2965 product(uintx, NewSize, ScaleForWordSize(1*M), \ |
1064 | 2966 "Initial new generation size (in bytes)") \ |
0 | 2967 \ |
2968 product(uintx, MaxNewSize, max_uintx, \ | |
1064 | 2969 "Maximum new generation size (in bytes), max_uintx means set " \ |
2970 "ergonomically") \ | |
0 | 2971 \ |
2972 product(uintx, PretenureSizeThreshold, 0, \ | |
1064 | 2973 "Maximum size in bytes of objects allocated in DefNew " \ |
2974 "generation; zero means no maximum") \ | |
2975 \ | |
2976 product(uintx, TLABSize, 0, \ | |
2977 "Starting TLAB size (in bytes); zero means set ergonomically") \ | |
0 | 2978 \ |
2979 product(uintx, MinTLABSize, 2*K, \ | |
2980 "Minimum allowed TLAB size (in bytes)") \ | |
2981 \ | |
2982 product(uintx, TLABAllocationWeight, 35, \ | |
2983 "Allocation averaging weight") \ | |
2984 \ | |
2985 product(uintx, TLABWasteTargetPercent, 1, \ | |
2986 "Percentage of Eden that can be wasted") \ | |
2987 \ | |
2988 product(uintx, TLABRefillWasteFraction, 64, \ | |
2989 "Max TLAB waste at a refill (internal fragmentation)") \ | |
2990 \ | |
2991 product(uintx, TLABWasteIncrement, 4, \ | |
2992 "Increment allowed waste at slow allocation") \ | |
2993 \ | |
1064 | 2994 product(intx, SurvivorRatio, 8, \ |
0 | 2995 "Ratio of eden/survivor space size") \ |
2996 \ | |
1064 | 2997 product(intx, NewRatio, 2, \ |
0 | 2998 "Ratio of new/old generation sizes") \ |
2999 \ | |
3000 product_pd(uintx, NewSizeThreadIncrease, \ | |
3001 "Additional size added to desired new generation size per " \ | |
3002 "non-daemon thread (in bytes)") \ | |
3003 \ | |
3004 product_pd(uintx, PermSize, \ | |
1064 | 3005 "Initial size of permanent generation (in bytes)") \ |
0 | 3006 \ |
3007 product_pd(uintx, MaxPermSize, \ | |
3008 "Maximum size of permanent generation (in bytes)") \ | |
3009 \ | |
3010 product(uintx, MinHeapFreeRatio, 40, \ | |
3011 "Min percentage of heap free after GC to avoid expansion") \ | |
3012 \ | |
3013 product(uintx, MaxHeapFreeRatio, 70, \ | |
3014 "Max percentage of heap free after GC to avoid shrinking") \ | |
3015 \ | |
3016 product(intx, SoftRefLRUPolicyMSPerMB, 1000, \ | |
3017 "Number of milliseconds per MB of free space in the heap") \ | |
3018 \ | |
3019 product(uintx, MinHeapDeltaBytes, ScaleForWordSize(128*K), \ | |
3020 "Min change in heap space due to GC (in bytes)") \ | |
3021 \ | |
3022 product(uintx, MinPermHeapExpansion, ScaleForWordSize(256*K), \ | |
3023 "Min expansion of permanent heap (in bytes)") \ | |
3024 \ | |
3025 product(uintx, MaxPermHeapExpansion, ScaleForWordSize(4*M), \ | |
3026 "Max expansion of permanent heap without full GC (in bytes)") \ | |
3027 \ | |
3028 product(intx, QueuedAllocationWarningCount, 0, \ | |
3029 "Number of times an allocation that queues behind a GC " \ | |
3030 "will retry before printing a warning") \ | |
3031 \ | |
3032 diagnostic(uintx, VerifyGCStartAt, 0, \ | |
3033 "GC invoke count where +VerifyBefore/AfterGC kicks in") \ | |
3034 \ | |
3035 diagnostic(intx, VerifyGCLevel, 0, \ | |
3036 "Generation level at which to start +VerifyBefore/AfterGC") \ | |
3037 \ | |
3038 product(intx, MaxTenuringThreshold, 15, \ | |
3039 "Maximum value for tenuring threshold") \ | |
3040 \ | |
3041 product(intx, InitialTenuringThreshold, 7, \ | |
3042 "Initial value for tenuring threshold") \ | |
3043 \ | |
3044 product(intx, TargetSurvivorRatio, 50, \ | |
3045 "Desired percentage of survivor space used after scavenge") \ | |
3046 \ | |
438 | 3047 product(uintx, MarkSweepDeadRatio, 5, \ |
0 | 3048 "Percentage (0-100) of the old gen allowed as dead wood." \ |
3049 "Serial mark sweep treats this as both the min and max value." \ | |
3050 "CMS uses this value only if it falls back to mark sweep." \ | |
3051 "Par compact uses a variable scale based on the density of the" \ | |
3052 "generation and treats this as the max value when the heap is" \ | |
3053 "either completely full or completely empty. Par compact also" \ | |
3054 "has a smaller default value; see arguments.cpp.") \ | |
3055 \ | |
438 | 3056 product(uintx, PermMarkSweepDeadRatio, 20, \ |
0 | 3057 "Percentage (0-100) of the perm gen allowed as dead wood." \ |
3058 "See MarkSweepDeadRatio for collector-specific comments.") \ | |
3059 \ | |
3060 product(intx, MarkSweepAlwaysCompactCount, 4, \ | |
3061 "How often should we fully compact the heap (ignoring the dead " \ | |
3062 "space parameters)") \ | |
3063 \ | |
3064 product(intx, PrintCMSStatistics, 0, \ | |
3065 "Statistics for CMS") \ | |
3066 \ | |
3067 product(bool, PrintCMSInitiationStatistics, false, \ | |
3068 "Statistics for initiating a CMS collection") \ | |
3069 \ | |
3070 product(intx, PrintFLSStatistics, 0, \ | |
3071 "Statistics for CMS' FreeListSpace") \ | |
3072 \ | |
3073 product(intx, PrintFLSCensus, 0, \ | |
3074 "Census for CMS' FreeListSpace") \ | |
3075 \ | |
3076 develop(uintx, GCExpandToAllocateDelayMillis, 0, \ | |
3077 "Delay in ms between expansion and allocation") \ | |
3078 \ | |
3079 product(intx, DeferThrSuspendLoopCount, 4000, \ | |
3080 "(Unstable) Number of times to iterate in safepoint loop " \ | |
3081 " before blocking VM threads ") \ | |
3082 \ | |
3083 product(intx, DeferPollingPageLoopCount, -1, \ | |
3084 "(Unsafe,Unstable) Number of iterations in safepoint loop " \ | |
3085 "before changing safepoint polling page to RO ") \ | |
3086 \ | |
3087 product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \ | |
3088 \ | |
3089 product(bool, PSChunkLargeArrays, true, \ | |
3090 "true: process large arrays in chunks") \ | |
3091 \ | |
3092 product(uintx, GCDrainStackTargetSize, 64, \ | |
3093 "how many entries we'll try to leave on the stack during " \ | |
3094 "parallel GC") \ | |
3095 \ | |
3096 /* stack parameters */ \ | |
3097 product_pd(intx, StackYellowPages, \ | |
3098 "Number of yellow zone (recoverable overflows) pages") \ | |
3099 \ | |
3100 product_pd(intx, StackRedPages, \ | |
3101 "Number of red zone (unrecoverable overflows) pages") \ | |
3102 \ | |
3103 product_pd(intx, StackShadowPages, \ | |
3104 "Number of shadow zone (for overflow checking) pages" \ | |
3105 " this should exceed the depth of the VM and native call stack") \ | |
3106 \ | |
3107 product_pd(intx, ThreadStackSize, \ | |
3108 "Thread Stack Size (in Kbytes)") \ | |
3109 \ | |
3110 product_pd(intx, VMThreadStackSize, \ | |
3111 "Non-Java Thread Stack Size (in Kbytes)") \ | |
3112 \ | |
3113 product_pd(intx, CompilerThreadStackSize, \ | |
3114 "Compiler Thread Stack Size (in Kbytes)") \ | |
3115 \ | |
3116 develop_pd(uintx, JVMInvokeMethodSlack, \ | |
3117 "Stack space (bytes) required for JVM_InvokeMethod to complete") \ | |
3118 \ | |
3119 product(uintx, ThreadSafetyMargin, 50*M, \ | |
3120 "Thread safety margin is used on fixed-stack LinuxThreads (on " \ | |
3121 "Linux/x86 only) to prevent heap-stack collision. Set to 0 to " \ | |
3122 "disable this feature") \ | |
3123 \ | |
3124 /* code cache parameters */ \ | |
3125 develop(uintx, CodeCacheSegmentSize, 64, \ | |
3126 "Code cache segment size (in bytes) - smallest unit of " \ | |
3127 "allocation") \ | |
3128 \ | |
3129 develop_pd(intx, CodeEntryAlignment, \ | |
3130 "Code entry alignment for generated code (in bytes)") \ | |
3131 \ | |
1365 | 3132 product_pd(intx, OptoLoopAlignment, \ |
3133 "Align inner loops to zero relative to this modulus") \ | |
3134 \ | |
0 | 3135 product_pd(uintx, InitialCodeCacheSize, \ |
3136 "Initial code cache size (in bytes)") \ | |
3137 \ | |
3138 product_pd(uintx, ReservedCodeCacheSize, \ | |
3139 "Reserved code cache size (in bytes) - maximum code cache size") \ | |
3140 \ | |
3141 product(uintx, CodeCacheMinimumFreeSpace, 500*K, \ | |
3142 "When less than X space left, we stop compiling.") \ | |
3143 \ | |
3144 product_pd(uintx, CodeCacheExpansionSize, \ | |
3145 "Code cache expansion size (in bytes)") \ | |
3146 \ | |
3147 develop_pd(uintx, CodeCacheMinBlockLength, \ | |
3148 "Minimum number of segments in a code cache block.") \ | |
3149 \ | |
3150 notproduct(bool, ExitOnFullCodeCache, false, \ | |
3151 "Exit the VM if we fill the code cache.") \ | |
3152 \ | |
4039 | 3153 product(bool, UseCodeCacheFlushing, true, \ |
1202 | 3154 "Attempt to clean the code cache before shutting off compiler") \ |
3155 \ | |
3156 product(intx, MinCodeCacheFlushingInterval, 30, \ | |
3157 "Min number of seconds between code cache cleaning sessions") \ | |
3158 \ | |
3159 product(uintx, CodeCacheFlushingMinimumFreeSpace, 1500*K, \ | |
3160 "When less than X space left, start code cache cleaning") \ | |
3161 \ | |
0 | 3162 /* interpreter debugging */ \ |
3163 develop(intx, BinarySwitchThreshold, 5, \ | |
3164 "Minimal number of lookupswitch entries for rewriting to binary " \ | |
3165 "switch") \ | |
3166 \ | |
3167 develop(intx, StopInterpreterAt, 0, \ | |
3168 "Stops interpreter execution at specified bytecode number") \ | |
3169 \ | |
3170 develop(intx, TraceBytecodesAt, 0, \ | |
3171 "Traces bytecodes starting with specified bytecode number") \ | |
3172 \ | |
3173 /* compiler interface */ \ | |
3174 develop(intx, CIStart, 0, \ | |
3175 "the id of the first compilation to permit") \ | |
3176 \ | |
3177 develop(intx, CIStop, -1, \ | |
3178 "the id of the last compilation to permit") \ | |
3179 \ | |
3180 develop(intx, CIStartOSR, 0, \ | |
3181 "the id of the first osr compilation to permit " \ | |
3182 "(CICountOSR must be on)") \ | |
3183 \ | |
3184 develop(intx, CIStopOSR, -1, \ | |
3185 "the id of the last osr compilation to permit " \ | |
3186 "(CICountOSR must be on)") \ | |
3187 \ | |
3188 develop(intx, CIBreakAtOSR, -1, \ | |
3189 "id of osr compilation to break at") \ | |
3190 \ | |
3191 develop(intx, CIBreakAt, -1, \ | |
3192 "id of compilation to break at") \ | |
3193 \ | |
3194 product(ccstrlist, CompileOnly, "", \ | |
3195 "List of methods (pkg/class.name) to restrict compilation to") \ | |
3196 \ | |
3197 product(ccstr, CompileCommandFile, NULL, \ | |
3198 "Read compiler commands from this file [.hotspot_compiler]") \ | |
3199 \ | |
3200 product(ccstrlist, CompileCommand, "", \ | |
3201 "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \ | |
3202 \ | |
3203 product(bool, CICompilerCountPerCPU, false, \ | |
3204 "1 compiler thread for log(N CPUs)") \ | |
3205 \ | |
3206 develop(intx, CIFireOOMAt, -1, \ | |
3207 "Fire OutOfMemoryErrors throughout CI for testing the compiler " \ | |
3208 "(non-negative value throws OOM after this many CI accesses " \ | |
3209 "in each compile)") \ | |
3210 \ | |
909
b32a809aab08
6866585: debug code in ciObjectFactory too slow for large objects
jcoomes
parents:
905
diff
changeset
|
3211 notproduct(bool, CIObjectFactoryVerify, false, \ |
b32a809aab08
6866585: debug code in ciObjectFactory too slow for large objects
jcoomes
parents:
905
diff
changeset
|
3212 "enable potentially expensive verification in ciObjectFactory") \ |
b32a809aab08
6866585: debug code in ciObjectFactory too slow for large objects
jcoomes
parents:
905
diff
changeset
|
3213 \ |
0 | 3214 /* Priorities */ \ |
3215 product_pd(bool, UseThreadPriorities, "Use native thread priorities") \ | |
3216 \ | |
3217 product(intx, ThreadPriorityPolicy, 0, \ | |
3218 "0 : Normal. "\ | |
3219 " VM chooses priorities that are appropriate for normal "\ | |
3220 " applications. On Solaris NORM_PRIORITY and above are mapped "\ | |
3221 " to normal native priority. Java priorities below NORM_PRIORITY"\ | |
3222 " map to lower native priority values. On Windows applications"\ | |
3223 " are allowed to use higher native priorities. However, with "\ | |
3224 " ThreadPriorityPolicy=0, VM will not use the highest possible"\ | |
3225 " native priority, THREAD_PRIORITY_TIME_CRITICAL, as it may "\ | |
3226 " interfere with system threads. On Linux thread priorities "\ | |
3227 " are ignored because the OS does not support static priority "\ | |
3228 " in SCHED_OTHER scheduling class which is the only choice for"\ | |
3229 " non-root, non-realtime applications. "\ | |
3230 "1 : Aggressive. "\ | |
3231 " Java thread priorities map over to the entire range of "\ | |
3232 " native thread priorities. Higher Java thread priorities map "\ | |
3233 " to higher native thread priorities. This policy should be "\ | |
3234 " used with care, as sometimes it can cause performance "\ | |
3235 " degradation in the application and/or the entire system. On "\ | |
3236 " Linux this policy requires root privilege.") \ | |
3237 \ | |
3238 product(bool, ThreadPriorityVerbose, false, \ | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3239 "Print priority changes") \ |
0 | 3240 \ |
3241 product(intx, DefaultThreadPriority, -1, \ | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3242 "The native priority at which threads run if not elsewhere " \ |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3243 "specified (-1 means no change)") \ |
0 | 3244 \ |
3245 product(intx, CompilerThreadPriority, -1, \ | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3246 "The native priority at which compiler threads should run " \ |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3247 "(-1 means no change)") \ |
0 | 3248 \ |
3249 product(intx, VMThreadPriority, -1, \ | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3250 "The native priority at which the VM thread should run " \ |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3251 "(-1 means no change)") \ |
0 | 3252 \ |
3253 product(bool, CompilerThreadHintNoPreempt, true, \ | |
3254 "(Solaris only) Give compiler threads an extra quanta") \ | |
3255 \ | |
3256 product(bool, VMThreadHintNoPreempt, false, \ | |
3257 "(Solaris only) Give VM thread an extra quanta") \ | |
3258 \ | |
3259 product(intx, JavaPriority1_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3260 product(intx, JavaPriority2_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3261 product(intx, JavaPriority3_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3262 product(intx, JavaPriority4_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3263 product(intx, JavaPriority5_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3264 product(intx, JavaPriority6_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3265 product(intx, JavaPriority7_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3266 product(intx, JavaPriority8_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3267 product(intx, JavaPriority9_To_OSPriority, -1, "Map Java priorities to OS priorities") \ | |
3268 product(intx, JavaPriority10_To_OSPriority,-1, "Map Java priorities to OS priorities") \ | |
3269 \ | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3270 experimental(bool, UseCriticalJavaThreadPriority, false, \ |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3271 "Java thread priority 10 maps to critical scheduling priority") \ |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3272 \ |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3273 experimental(bool, UseCriticalCompilerThreadPriority, false, \ |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3274 "Compiler thread(s) run at critical scheduling priority") \ |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3275 \ |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3276 experimental(bool, UseCriticalCMSThreadPriority, false, \ |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3277 "ConcurrentMarkSweep thread runs at critical scheduling priority")\ |
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
diff
changeset
|
3278 \ |
0 | 3279 /* compiler debugging */ \ |
3280 notproduct(intx, CompileTheWorldStartAt, 1, \ | |
3281 "First class to consider when using +CompileTheWorld") \ | |
3282 \ | |
3283 notproduct(intx, CompileTheWorldStopAt, max_jint, \ | |
3284 "Last class to consider when using +CompileTheWorld") \ | |
3285 \ | |
3286 develop(intx, NewCodeParameter, 0, \ | |
3287 "Testing Only: Create a dedicated integer parameter before " \ | |
3288 "putback") \ | |
3289 \ | |
3290 /* new oopmap storage allocation */ \ | |
3291 develop(intx, MinOopMapAllocation, 8, \ | |
3292 "Minimum number of OopMap entries in an OopMapSet") \ | |
3293 \ | |
3294 /* Background Compilation */ \ | |
3295 develop(intx, LongCompileThreshold, 50, \ | |
3296 "Used with +TraceLongCompiles") \ | |
3297 \ | |
3298 product(intx, StarvationMonitorInterval, 200, \ | |
3299 "Pause between each check in ms") \ | |
3300 \ | |
3301 /* recompilation */ \ | |
3302 product_pd(intx, CompileThreshold, \ | |
3303 "number of interpreted method invocations before (re-)compiling") \ | |
3304 \ | |
3305 product_pd(intx, BackEdgeThreshold, \ | |
3306 "Interpreter Back edge threshold at which an OSR compilation is invoked")\ | |
3307 \ | |
1783 | 3308 product(intx, Tier0InvokeNotifyFreqLog, 7, \ |
3309 "Interpreter (tier 0) invocation notification frequency.") \ | |
3310 \ | |
3311 product(intx, Tier2InvokeNotifyFreqLog, 11, \ | |
3312 "C1 without MDO (tier 2) invocation notification frequency.") \ | |
3313 \ | |
3314 product(intx, Tier3InvokeNotifyFreqLog, 10, \ | |
3315 "C1 with MDO profiling (tier 3) invocation notification " \ | |
3316 "frequency.") \ | |
3317 \ | |
3964
dc45ae774613
7096639: Tiered: Incorrect counter overflow handling for inlined methods
iveresov
parents:
3960
diff
changeset
|
3318 product(intx, Tier23InlineeNotifyFreqLog, 20, \ |
dc45ae774613
7096639: Tiered: Incorrect counter overflow handling for inlined methods
iveresov
parents:
3960
diff
changeset
|
3319 "Inlinee invocation (tiers 2 and 3) notification frequency") \ |
dc45ae774613
7096639: Tiered: Incorrect counter overflow handling for inlined methods
iveresov
parents:
3960
diff
changeset
|
3320 \ |
1783 | 3321 product(intx, Tier0BackedgeNotifyFreqLog, 10, \ |
3322 "Interpreter (tier 0) invocation notification frequency.") \ | |
3323 \ | |
3324 product(intx, Tier2BackedgeNotifyFreqLog, 14, \ | |
3325 "C1 without MDO (tier 2) invocation notification frequency.") \ | |
3326 \ | |
3327 product(intx, Tier3BackedgeNotifyFreqLog, 13, \ | |
3328 "C1 with MDO profiling (tier 3) invocation notification " \ | |
3329 "frequency.") \ | |
3330 \ | |
3331 product(intx, Tier2CompileThreshold, 0, \ | |
3332 "threshold at which tier 2 compilation is invoked") \ | |
3333 \ | |
3334 product(intx, Tier2BackEdgeThreshold, 0, \ | |
3335 "Back edge threshold at which tier 2 compilation is invoked") \ | |
3336 \ | |
3337 product(intx, Tier3InvocationThreshold, 200, \ | |
3338 "Compile if number of method invocations crosses this " \ | |
3339 "threshold") \ | |
3340 \ | |
3341 product(intx, Tier3MinInvocationThreshold, 100, \ | |
3342 "Minimum invocation to compile at tier 3") \ | |
3343 \ | |
3344 product(intx, Tier3CompileThreshold, 2000, \ | |
3345 "Threshold at which tier 3 compilation is invoked (invocation " \ | |
3346 "minimum must be satisfied.") \ | |
3347 \ | |
4819 | 3348 product(intx, Tier3BackEdgeThreshold, 60000, \ |
1783 | 3349 "Back edge threshold at which tier 3 OSR compilation is invoked") \ |
3350 \ | |
3351 product(intx, Tier4InvocationThreshold, 5000, \ | |
3352 "Compile if number of method invocations crosses this " \ | |
3353 "threshold") \ | |
3354 \ | |
3355 product(intx, Tier4MinInvocationThreshold, 600, \ | |
3356 "Minimum invocation to compile at tier 4") \ | |
3357 \ | |
3358 product(intx, Tier4CompileThreshold, 15000, \ | |
3359 "Threshold at which tier 4 compilation is invoked (invocation " \ | |
3360 "minimum must be satisfied.") \ | |
3361 \ | |
3362 product(intx, Tier4BackEdgeThreshold, 40000, \ | |
3363 "Back edge threshold at which tier 4 OSR compilation is invoked") \ | |
3364 \ | |
3365 product(intx, Tier3DelayOn, 5, \ | |
3366 "If C2 queue size grows over this amount per compiler thread " \ | |
3367 "stop compiling at tier 3 and start compiling at tier 2") \ | |
3368 \ | |
3369 product(intx, Tier3DelayOff, 2, \ | |
3370 "If C2 queue size is less than this amount per compiler thread " \ | |
3371 "allow methods compiled at tier 2 transition to tier 3") \ | |
3372 \ | |
3373 product(intx, Tier3LoadFeedback, 5, \ | |
3374 "Tier 3 thresholds will increase twofold when C1 queue size " \ | |
3375 "reaches this amount per compiler thread") \ | |
3376 \ | |
3377 product(intx, Tier4LoadFeedback, 3, \ | |
3378 "Tier 4 thresholds will increase twofold when C2 queue size " \ | |
3379 "reaches this amount per compiler thread") \ | |
3380 \ | |
3381 product(intx, TieredCompileTaskTimeout, 50, \ | |
3382 "Kill compile task if method was not used within " \ | |
3383 "given timeout in milliseconds") \ | |
3384 \ | |
3385 product(intx, TieredStopAtLevel, 4, \ | |
3386 "Stop at given compilation level") \ | |
3387 \ | |
3388 product(intx, Tier0ProfilingStartPercentage, 200, \ | |
3389 "Start profiling in interpreter if the counters exceed tier 3" \ | |
3390 "thresholds by the specified percentage") \ | |
3391 \ | |
3392 product(intx, TieredRateUpdateMinTime, 1, \ | |
3393 "Minimum rate sampling interval (in milliseconds)") \ | |
3394 \ | |
3395 product(intx, TieredRateUpdateMaxTime, 25, \ | |
3396 "Maximum rate sampling interval (in milliseconds)") \ | |
0 | 3397 \ |
3398 product_pd(bool, TieredCompilation, \ | |
1783 | 3399 "Enable tiered compilation") \ |
3400 \ | |
3401 product(bool, PrintTieredEvents, false, \ | |
3402 "Print tiered events notifications") \ | |
0 | 3403 \ |
3404 product_pd(intx, OnStackReplacePercentage, \ | |
3405 "NON_TIERED number of method invocations/branches (expressed as %"\ | |
3406 "of CompileThreshold) before (re-)compiling OSR code") \ | |
3407 \ | |
3408 product(intx, InterpreterProfilePercentage, 33, \ | |
3409 "NON_TIERED number of method invocations/branches (expressed as %"\ | |
3410 "of CompileThreshold) before profiling in the interpreter") \ | |
3411 \ | |
3412 develop(intx, MaxRecompilationSearchLength, 10, \ | |
3413 "max. # frames to inspect searching for recompilee") \ | |
3414 \ | |
3415 develop(intx, MaxInterpretedSearchLength, 3, \ | |
3416 "max. # interp. frames to skip when searching for recompilee") \ | |
3417 \ | |
3418 develop(intx, DesiredMethodLimit, 8000, \ | |
3419 "desired max. method size (in bytecodes) after inlining") \ | |
3420 \ | |
3421 develop(intx, HugeMethodLimit, 8000, \ | |
3422 "don't compile methods larger than this if " \ | |
3423 "+DontCompileHugeMethods") \ | |
3424 \ | |
3425 /* New JDK 1.4 reflection implementation */ \ | |
3426 \ | |
3427 develop(bool, UseNewReflection, true, \ | |
3428 "Temporary flag for transition to reflection based on dynamic " \ | |
3429 "bytecode generation in 1.4; can no longer be turned off in 1.4 " \ | |
3430 "JDK, and is unneeded in 1.3 JDK, but marks most places VM " \ | |
3431 "changes were needed") \ | |
3432 \ | |
3433 develop(bool, VerifyReflectionBytecodes, false, \ | |
3434 "Force verification of 1.4 reflection bytecodes. Does not work " \ | |
3435 "in situations like that described in 4486457 or for " \ | |
3436 "constructors generated for serialization, so can not be enabled "\ | |
3437 "in product.") \ | |
3438 \ | |
3439 product(bool, ReflectionWrapResolutionErrors, true, \ | |
3440 "Temporary flag for transition to AbstractMethodError wrapped " \ | |
3441 "in InvocationTargetException. See 6531596") \ | |
3442 \ | |
3443 \ | |
3444 develop(intx, FastSuperclassLimit, 8, \ | |
3445 "Depth of hardwired instanceof accelerator array") \ | |
3446 \ | |
3447 /* Properties for Java libraries */ \ | |
3448 \ | |
6199
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6197
diff
changeset
|
3449 product(uintx, MaxDirectMemorySize, 0, \ |
0 | 3450 "Maximum total size of NIO direct-buffer allocations") \ |
3451 \ | |
3452 /* temporary developer defined flags */ \ | |
3453 \ | |
3454 diagnostic(bool, UseNewCode, false, \ | |
3455 "Testing Only: Use the new version while testing") \ | |
3456 \ | |
3457 diagnostic(bool, UseNewCode2, false, \ | |
3458 "Testing Only: Use the new version while testing") \ | |
3459 \ | |
3460 diagnostic(bool, UseNewCode3, false, \ | |
3461 "Testing Only: Use the new version while testing") \ | |
3462 \ | |
3463 /* flags for performance data collection */ \ | |
3464 \ | |
3797
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3780
diff
changeset
|
3465 product(bool, UsePerfData, falseInEmbedded, \ |
0 | 3466 "Flag to disable jvmstat instrumentation for performance testing" \ |
3797
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3780
diff
changeset
|
3467 "and problem isolation purposes.") \ |
0 | 3468 \ |
3469 product(bool, PerfDataSaveToFile, false, \ | |
3470 "Save PerfData memory to hsperfdata_<pid> file on exit") \ | |
3471 \ | |
3472 product(ccstr, PerfDataSaveFile, NULL, \ | |
3473 "Save PerfData memory to the specified absolute pathname," \ | |
3474 "%p in the file name if present will be replaced by pid") \ | |
3475 \ | |
3476 product(intx, PerfDataSamplingInterval, 50 /*ms*/, \ | |
3477 "Data sampling interval in milliseconds") \ | |
3478 \ | |
3479 develop(bool, PerfTraceDataCreation, false, \ | |
3480 "Trace creation of Performance Data Entries") \ | |
3481 \ | |
3482 develop(bool, PerfTraceMemOps, false, \ | |
3483 "Trace PerfMemory create/attach/detach calls") \ | |
3484 \ | |
3485 product(bool, PerfDisableSharedMem, false, \ | |
3486 "Store performance data in standard memory") \ | |
3487 \ | |
3488 product(intx, PerfDataMemorySize, 32*K, \ | |
3489 "Size of performance data memory region. Will be rounded " \ | |
3490 "up to a multiple of the native os page size.") \ | |
3491 \ | |
3492 product(intx, PerfMaxStringConstLength, 1024, \ | |
3493 "Maximum PerfStringConstant string length before truncation") \ | |
3494 \ | |
3495 product(bool, PerfAllowAtExitRegistration, false, \ | |
3496 "Allow registration of atexit() methods") \ | |
3497 \ | |
3498 product(bool, PerfBypassFileSystemCheck, false, \ | |
3499 "Bypass Win32 file system criteria checks (Windows Only)") \ | |
3500 \ | |
3501 product(intx, UnguardOnExecutionViolation, 0, \ | |
3502 "Unguard page and retry on no-execute fault (Win32 only)" \ | |
3503 "0=off, 1=conservative, 2=aggressive") \ | |
3504 \ | |
3505 /* Serviceability Support */ \ | |
3506 \ | |
3507 product(bool, ManagementServer, false, \ | |
3508 "Create JMX Management Server") \ | |
3509 \ | |
3510 product(bool, DisableAttachMechanism, false, \ | |
3511 "Disable mechanism that allows tools to attach to this VM") \ | |
3512 \ | |
3513 product(bool, StartAttachListener, false, \ | |
3514 "Always start Attach Listener at VM startup") \ | |
3515 \ | |
3516 manageable(bool, PrintConcurrentLocks, false, \ | |
3517 "Print java.util.concurrent locks in thread dump") \ | |
3518 \ | |
2209
e9aa2ca89ad6
7019718: make error reporting flags product instead of diagnostic
kamg
parents:
2204
diff
changeset
|
3519 product(bool, TransmitErrorReport, false, \ |
2199
d8a72fbc4be7
7003401: Implement VM error-reporting functionality on erroneous termination
kamg
parents:
2192
diff
changeset
|
3520 "Enable error report transmission on erroneous termination") \ |
d8a72fbc4be7
7003401: Implement VM error-reporting functionality on erroneous termination
kamg
parents:
2192
diff
changeset
|
3521 \ |
2209
e9aa2ca89ad6
7019718: make error reporting flags product instead of diagnostic
kamg
parents:
2204
diff
changeset
|
3522 product(ccstr, ErrorReportServer, NULL, \ |
2199
d8a72fbc4be7
7003401: Implement VM error-reporting functionality on erroneous termination
kamg
parents:
2192
diff
changeset
|
3523 "Override built-in error report server address") \ |
d8a72fbc4be7
7003401: Implement VM error-reporting functionality on erroneous termination
kamg
parents:
2192
diff
changeset
|
3524 \ |
0 | 3525 /* Shared spaces */ \ |
3526 \ | |
3527 product(bool, UseSharedSpaces, true, \ | |
3528 "Use shared spaces in the permanent generation") \ | |
3529 \ | |
3530 product(bool, RequireSharedSpaces, false, \ | |
3531 "Require shared spaces in the permanent generation") \ | |
3532 \ | |
3533 product(bool, DumpSharedSpaces, false, \ | |
3534 "Special mode: JVM reads a class list, loads classes, builds " \ | |
3535 "shared spaces, and dumps the shared spaces to a file to be " \ | |
3536 "used in future JVM runs.") \ | |
3537 \ | |
3538 product(bool, PrintSharedSpaces, false, \ | |
3539 "Print usage of shared spaces") \ | |
3540 \ | |
3541 product(uintx, SharedDummyBlockSize, 512*M, \ | |
3542 "Size of dummy block used to shift heap addresses (in bytes)") \ | |
3543 \ | |
1875 | 3544 product(uintx, SharedReadWriteSize, NOT_LP64(12*M) LP64_ONLY(13*M), \ |
0 | 3545 "Size of read-write space in permanent generation (in bytes)") \ |
3546 \ | |
910
10d8c0d0d60e
6867645: java -Xshare:dump failed - read only space too small
jcoomes
parents:
909
diff
changeset
|
3547 product(uintx, SharedReadOnlySize, 10*M, \ |
0 | 3548 "Size of read-only space in permanent generation (in bytes)") \ |
3549 \ | |
5979
fc9d8850ab8b
7150058: Allocate symbols from null boot loader to an arena for NMT
coleenp
parents:
5947
diff
changeset
|
3550 product(uintx, SharedMiscDataSize, NOT_LP64(4*M) LP64_ONLY(5*M) NOT_PRODUCT(+1*M), \ |
0 | 3551 "Size of the shared data area adjacent to the heap (in bytes)") \ |
3552 \ | |
3553 product(uintx, SharedMiscCodeSize, 4*M, \ | |
3554 "Size of the shared code area adjacent to the heap (in bytes)") \ | |
3555 \ | |
3556 diagnostic(bool, SharedOptimizeColdStart, true, \ | |
3557 "At dump time, order shared objects to achieve better " \ | |
3558 "cold startup time.") \ | |
3559 \ | |
3560 develop(intx, SharedOptimizeColdStartPolicy, 2, \ | |
3561 "Reordering policy for SharedOptimizeColdStart " \ | |
3562 "0=favor classload-time locality, 1=balanced, " \ | |
3563 "2=favor runtime locality") \ | |
3564 \ | |
3565 diagnostic(bool, SharedSkipVerify, false, \ | |
3566 "Skip assert() and verify() which page-in unwanted shared " \ | |
3567 "objects. ") \ | |
3568 \ | |
2492
4e5515d09314
Fixed merge issues.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
2491
diff
changeset
|
3569 diagnostic(bool, EnableInvokeDynamic, false, \ |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3570 "support JSR 292 (method handles, invokedynamic, " \ |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3571 "anonymous classes") \ |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3572 \ |
3449
a9b8b43b115f
7052219: JSR 292: Crash in ~BufferBlob::MethodHandles adapters
never
parents:
3418
diff
changeset
|
3573 diagnostic(bool, PrintMethodHandleStubs, false, \ |
a9b8b43b115f
7052219: JSR 292: Crash in ~BufferBlob::MethodHandles adapters
never
parents:
3418
diff
changeset
|
3574 "Print generated stub code for method handles") \ |
a9b8b43b115f
7052219: JSR 292: Crash in ~BufferBlob::MethodHandles adapters
never
parents:
3418
diff
changeset
|
3575 \ |
710 | 3576 develop(bool, TraceMethodHandles, false, \ |
3577 "trace internal method handle operations") \ | |
3578 \ | |
3579 diagnostic(bool, VerifyMethodHandles, trueInDebug, \ | |
3580 "perform extra checks when constructing method handles") \ | |
3581 \ | |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6199
diff
changeset
|
3582 diagnostic(bool, ShowHiddenFrames, false, \ |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6199
diff
changeset
|
3583 "show method handle implementation frames (usually hidden)") \ |
3388
a80577f854f9
7045513: JSR 292 inlining causes crashes in methodHandleWalk.cpp
never
parents:
3384
diff
changeset
|
3584 \ |
1173
73b22f919c34
6912065: final fields in objects need to support inlining optimizations for JSR 292
jrose
parents:
1157
diff
changeset
|
3585 experimental(bool, TrustFinalNonStaticFields, false, \ |
73b22f919c34
6912065: final fields in objects need to support inlining optimizations for JSR 292
jrose
parents:
1157
diff
changeset
|
3586 "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
|
3587 \ |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3588 develop(bool, TraceInvokeDynamic, false, \ |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3589 "trace internal invoke dynamic operations") \ |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3590 \ |
0 | 3591 diagnostic(bool, PauseAtStartup, false, \ |
3592 "Causes the VM to pause at startup time and wait for the pause " \ | |
3593 "file to be removed (default: ./vm.paused.<pid>)") \ | |
3594 \ | |
3595 diagnostic(ccstr, PauseAtStartupFile, NULL, \ | |
3596 "The file to create and for whose removal to await when pausing " \ | |
3597 "at startup. (default: ./vm.paused.<pid>)") \ | |
3598 \ | |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2265
diff
changeset
|
3599 diagnostic(bool, PauseAtExit, false, \ |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2265
diff
changeset
|
3600 "Pause and wait for keypress on exit if a debugger is attached") \ |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2265
diff
changeset
|
3601 \ |
0 | 3602 product(bool, ExtendedDTraceProbes, false, \ |
3603 "Enable performance-impacting dtrace probes") \ | |
3604 \ | |
3605 product(bool, DTraceMethodProbes, false, \ | |
3606 "Enable dtrace probes for method-entry and method-exit") \ | |
3607 \ | |
3608 product(bool, DTraceAllocProbes, false, \ | |
3609 "Enable dtrace probes for object allocation") \ | |
3610 \ | |
3611 product(bool, DTraceMonitorProbes, false, \ | |
3612 "Enable dtrace probes for monitor events") \ | |
3613 \ | |
3614 product(bool, RelaxAccessControlCheck, false, \ | |
3615 "Relax the access control checks in the verifier") \ | |
3616 \ | |
116
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
113
diff
changeset
|
3617 diagnostic(bool, PrintDTraceDOF, false, \ |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
113
diff
changeset
|
3618 "Print the DTrace DOF passed to the system for JSDT probes") \ |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
113
diff
changeset
|
3619 \ |
2378 | 3620 product(uintx, StringTableSize, 1009, \ |
3621 "Number of buckets in the interned String table") \ | |
3622 \ | |
449
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
443
diff
changeset
|
3623 product(bool, UseVMInterruptibleIO, false, \ |
0 | 3624 "(Unstable, Solaris-specific) Thread interrupt before or with " \ |
449
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
443
diff
changeset
|
3625 "EINTR for I/O operations results in OS_INTRPT. The default value"\ |
5915 | 3626 " of this flag is true for JDK 6 and earlier") \ |
3627 \ | |
3628 diagnostic(bool, WhiteBoxAPI, false, \ | |
6064
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
5979
diff
changeset
|
3629 "Enable internal testing APIs") \ |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
5979
diff
changeset
|
3630 \ |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
5979
diff
changeset
|
3631 product(bool, PrintGCCause, true, \ |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
5979
diff
changeset
|
3632 "Include GC cause in GC logging") |
0 | 3633 |
3634 /* | |
3635 * Macros for factoring of globals | |
3636 */ | |
3637 | |
3638 // Interface macros | |
3639 #define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; | |
3640 #define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name; | |
3641 #define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name; | |
350
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
3642 #define DECLARE_EXPERIMENTAL_FLAG(type, name, value, doc) extern "C" type name; |
0 | 3643 #define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name; |
3644 #define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name; | |
3645 #ifdef PRODUCT | |
3646 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) const type name = value; | |
3647 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) const type name = pd_##name; | |
3648 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) | |
3649 #else | |
3650 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name; | |
3651 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name; | |
3652 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name; | |
3653 #endif | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3654 // Special LP64 flags, product only needed for now. |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3655 #ifdef _LP64 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3656 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3657 #else |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3658 #define DECLARE_LP64_PRODUCT_FLAG(type, name, value, doc) const type name = value; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3659 #endif // _LP64 |
0 | 3660 |
3661 // Implementation macros | |
3662 #define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value; | |
3663 #define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name; | |
3664 #define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value; | |
350
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
3665 #define MATERIALIZE_EXPERIMENTAL_FLAG(type, name, value, doc) type name = value; |
0 | 3666 #define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value; |
3667 #define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value; | |
3668 #ifdef PRODUCT | |
3669 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) /* flag name is constant */ | |
3670 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) /* flag name is constant */ | |
3671 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) | |
3672 #else | |
3673 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value; | |
3674 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name; | |
3675 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value; | |
3676 #endif | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3677 #ifdef _LP64 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3678 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) type name = value; |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3679 #else |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3680 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) /* flag is constant */ |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3681 #endif // _LP64 |
0 | 3682 |
350
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
3683 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 | 3684 |
3685 RUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG) | |
1972 | 3686 |
6633
a5dd6e3ef9f3
6677625: Move platform specific flags from globals.hpp to globals_<arch>.hpp
twisti
parents:
6608
diff
changeset
|
3687 ARCH_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_EXPERIMENTAL_FLAG, DECLARE_NOTPRODUCT_FLAG) |
a5dd6e3ef9f3
6677625: Move platform specific flags from globals.hpp to globals_<arch>.hpp
twisti
parents:
6608
diff
changeset
|
3688 |
4107
cd00eaeebef6
7117389: Add a framework for vendor-specific command line switch extensions to Hotspot
phh
parents:
4088
diff
changeset
|
3689 // Extensions |
cd00eaeebef6
7117389: Add a framework for vendor-specific command line switch extensions to Hotspot
phh
parents:
4088
diff
changeset
|
3690 |
cd00eaeebef6
7117389: Add a framework for vendor-specific command line switch extensions to Hotspot
phh
parents:
4088
diff
changeset
|
3691 #include "runtime/globals_ext.hpp" |
cd00eaeebef6
7117389: Add a framework for vendor-specific command line switch extensions to Hotspot
phh
parents:
4088
diff
changeset
|
3692 |
1972 | 3693 #endif // SHARE_VM_RUNTIME_GLOBALS_HPP |