Mercurial > hg > truffle
annotate src/share/vm/runtime/globals.hpp @ 14714:b602356a9cfc
additional canonicalizers for accesses and value nodes (improves number of implicit null checks)
author | Lukas Stadler <lukas.stadler@oracle.com> |
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date | Thu, 20 Mar 2014 17:15:36 +0100 |
parents | b51e29501f30 |
children | 92aa6797d639 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_RUNTIME_GLOBALS_HPP |
26 #define SHARE_VM_RUNTIME_GLOBALS_HPP | |
27 | |
28 #include "utilities/debug.hpp" | |
4868 | 29 |
30 // use this for flags that are true per default in the tiered build | |
31 // but false in non-tiered builds, and vice versa | |
32 #ifdef TIERED | |
33 #define trueInTiered true | |
34 #define falseInTiered false | |
35 #else | |
36 #define trueInTiered false | |
37 #define falseInTiered true | |
38 #endif | |
39 | |
1972 | 40 #ifdef TARGET_ARCH_x86 |
41 # include "globals_x86.hpp" | |
42 #endif | |
43 #ifdef TARGET_ARCH_sparc | |
44 # include "globals_sparc.hpp" | |
45 #endif | |
46 #ifdef TARGET_ARCH_zero | |
47 # include "globals_zero.hpp" | |
48 #endif | |
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49 #ifdef TARGET_ARCH_arm |
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50 # include "globals_arm.hpp" |
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51 #endif |
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52 #ifdef TARGET_ARCH_ppc |
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53 # include "globals_ppc.hpp" |
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54 #endif |
1972 | 55 #ifdef TARGET_OS_FAMILY_linux |
56 # include "globals_linux.hpp" | |
57 #endif | |
58 #ifdef TARGET_OS_FAMILY_solaris | |
59 # include "globals_solaris.hpp" | |
60 #endif | |
61 #ifdef TARGET_OS_FAMILY_windows | |
62 # include "globals_windows.hpp" | |
63 #endif | |
14411 | 64 #ifdef TARGET_OS_FAMILY_aix |
65 # include "globals_aix.hpp" | |
66 #endif | |
3960 | 67 #ifdef TARGET_OS_FAMILY_bsd |
68 # include "globals_bsd.hpp" | |
69 #endif | |
1972 | 70 #ifdef TARGET_OS_ARCH_linux_x86 |
71 # include "globals_linux_x86.hpp" | |
72 #endif | |
73 #ifdef TARGET_OS_ARCH_linux_sparc | |
74 # include "globals_linux_sparc.hpp" | |
75 #endif | |
76 #ifdef TARGET_OS_ARCH_linux_zero | |
77 # include "globals_linux_zero.hpp" | |
78 #endif | |
79 #ifdef TARGET_OS_ARCH_solaris_x86 | |
80 # include "globals_solaris_x86.hpp" | |
81 #endif | |
82 #ifdef TARGET_OS_ARCH_solaris_sparc | |
83 # include "globals_solaris_sparc.hpp" | |
84 #endif | |
85 #ifdef TARGET_OS_ARCH_windows_x86 | |
86 # include "globals_windows_x86.hpp" | |
87 #endif | |
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88 #ifdef TARGET_OS_ARCH_linux_arm |
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89 # include "globals_linux_arm.hpp" |
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90 #endif |
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91 #ifdef TARGET_OS_ARCH_linux_ppc |
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92 # include "globals_linux_ppc.hpp" |
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93 #endif |
14411 | 94 #ifdef TARGET_OS_ARCH_aix_ppc |
95 # include "globals_aix_ppc.hpp" | |
96 #endif | |
3960 | 97 #ifdef TARGET_OS_ARCH_bsd_x86 |
98 # include "globals_bsd_x86.hpp" | |
99 #endif | |
100 #ifdef TARGET_OS_ARCH_bsd_zero | |
101 # include "globals_bsd_zero.hpp" | |
102 #endif | |
1972 | 103 #ifdef COMPILER1 |
104 #ifdef TARGET_ARCH_x86 | |
105 # include "c1_globals_x86.hpp" | |
106 #endif | |
107 #ifdef TARGET_ARCH_sparc | |
108 # include "c1_globals_sparc.hpp" | |
109 #endif | |
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110 #ifdef TARGET_ARCH_arm |
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111 # include "c1_globals_arm.hpp" |
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112 #endif |
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113 #ifdef TARGET_ARCH_ppc |
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114 # include "c1_globals_ppc.hpp" |
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115 #endif |
1972 | 116 #ifdef TARGET_OS_FAMILY_linux |
117 # include "c1_globals_linux.hpp" | |
118 #endif | |
119 #ifdef TARGET_OS_FAMILY_solaris | |
120 # include "c1_globals_solaris.hpp" | |
121 #endif | |
122 #ifdef TARGET_OS_FAMILY_windows | |
123 # include "c1_globals_windows.hpp" | |
124 #endif | |
14411 | 125 #ifdef TARGET_OS_FAMILY_aix |
126 # include "c1_globals_aix.hpp" | |
127 #endif | |
3960 | 128 #ifdef TARGET_OS_FAMILY_bsd |
129 # include "c1_globals_bsd.hpp" | |
130 #endif | |
1972 | 131 #endif |
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132 #ifdef COMPILERGRAAL |
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133 #ifdef TARGET_ARCH_x86 |
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134 # include "graalGlobals_x86.hpp" |
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135 #endif |
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136 #ifdef TARGET_ARCH_sparc |
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137 # include "graalGlobals_sparc.hpp" |
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138 #endif |
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139 #ifdef TARGET_ARCH_arm |
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140 # include "graalGlobals_arm.hpp" |
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141 #endif |
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142 #ifdef TARGET_ARCH_ppc |
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143 # include "graalGlobals_ppc.hpp" |
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144 #endif |
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145 #endif // COMPILERGRAAL |
1972 | 146 #ifdef COMPILER2 |
147 #ifdef TARGET_ARCH_x86 | |
148 # include "c2_globals_x86.hpp" | |
149 #endif | |
150 #ifdef TARGET_ARCH_sparc | |
151 # include "c2_globals_sparc.hpp" | |
152 #endif | |
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153 #ifdef TARGET_ARCH_arm |
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154 # include "c2_globals_arm.hpp" |
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155 #endif |
14411 | 156 #ifdef TARGET_ARCH_ppc |
157 # include "c2_globals_ppc.hpp" | |
158 #endif | |
1972 | 159 #ifdef TARGET_OS_FAMILY_linux |
160 # include "c2_globals_linux.hpp" | |
161 #endif | |
162 #ifdef TARGET_OS_FAMILY_solaris | |
163 # include "c2_globals_solaris.hpp" | |
164 #endif | |
165 #ifdef TARGET_OS_FAMILY_windows | |
166 # include "c2_globals_windows.hpp" | |
167 #endif | |
14411 | 168 #ifdef TARGET_OS_FAMILY_aix |
169 # include "c2_globals_aix.hpp" | |
170 #endif | |
3960 | 171 #ifdef TARGET_OS_FAMILY_bsd |
172 # include "c2_globals_bsd.hpp" | |
173 #endif | |
1972 | 174 #endif |
175 #ifdef SHARK | |
176 #ifdef TARGET_ARCH_zero | |
177 # include "shark_globals_zero.hpp" | |
178 #endif | |
179 #endif | |
180 | |
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181 #if !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK) && !defined(COMPILERGRAAL) |
0 | 182 define_pd_global(bool, BackgroundCompilation, false); |
183 define_pd_global(bool, UseTLAB, false); | |
184 define_pd_global(bool, CICompileOSR, false); | |
185 define_pd_global(bool, UseTypeProfile, false); | |
186 define_pd_global(bool, UseOnStackReplacement, false); | |
187 define_pd_global(bool, InlineIntrinsics, false); | |
188 define_pd_global(bool, PreferInterpreterNativeStubs, true); | |
189 define_pd_global(bool, ProfileInterpreter, false); | |
190 define_pd_global(bool, ProfileTraps, false); | |
191 define_pd_global(bool, TieredCompilation, false); | |
192 | |
193 define_pd_global(intx, CompileThreshold, 0); | |
194 define_pd_global(intx, BackEdgeThreshold, 0); | |
195 | |
196 define_pd_global(intx, OnStackReplacePercentage, 0); | |
197 define_pd_global(bool, ResizeTLAB, false); | |
198 define_pd_global(intx, FreqInlineSize, 0); | |
199 define_pd_global(intx, NewSizeThreadIncrease, 4*K); | |
200 define_pd_global(intx, InlineClassNatives, true); | |
201 define_pd_global(intx, InlineUnsafeOps, true); | |
202 define_pd_global(intx, InitialCodeCacheSize, 160*K); | |
203 define_pd_global(intx, ReservedCodeCacheSize, 32*M); | |
204 define_pd_global(intx, CodeCacheExpansionSize, 32*K); | |
205 define_pd_global(intx, CodeCacheMinBlockLength, 1); | |
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206 define_pd_global(intx, CodeCacheMinimumUseSpace, 200*K); |
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207 define_pd_global(uintx,MetaspaceSize, ScaleForWordSize(4*M)); |
0 | 208 define_pd_global(bool, NeverActAsServerClassMachine, true); |
1064 | 209 define_pd_global(uint64_t,MaxRAM, 1ULL*G); |
0 | 210 #define CI_COMPILER_COUNT 0 |
211 #else | |
212 | |
213 #ifdef COMPILER2 | |
214 #define CI_COMPILER_COUNT 2 | |
215 #else | |
216 #define CI_COMPILER_COUNT 1 | |
217 #endif // COMPILER2 | |
218 | |
219 #endif // no compilers | |
220 | |
221 // string type aliases used only in this file | |
222 typedef const char* ccstr; | |
223 typedef const char* ccstrlist; // represents string arguments which accumulate | |
224 | |
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225 struct Flag { |
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226 enum Flags { |
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227 // value origin |
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228 DEFAULT = 0, |
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229 COMMAND_LINE = 1, |
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230 ENVIRON_VAR = 2, |
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231 CONFIG_FILE = 3, |
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232 MANAGEMENT = 4, |
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233 ERGONOMIC = 5, |
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234 ATTACH_ON_DEMAND = 6, |
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235 INTERNAL = 7, |
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236 |
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237 LAST_VALUE_ORIGIN = INTERNAL, |
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238 VALUE_ORIGIN_BITS = 4, |
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239 VALUE_ORIGIN_MASK = right_n_bits(VALUE_ORIGIN_BITS), |
0 | 240 |
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241 // flag kind |
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242 KIND_PRODUCT = 1 << 4, |
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243 KIND_MANAGEABLE = 1 << 5, |
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244 KIND_DIAGNOSTIC = 1 << 6, |
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245 KIND_EXPERIMENTAL = 1 << 7, |
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246 KIND_NOT_PRODUCT = 1 << 8, |
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247 KIND_DEVELOP = 1 << 9, |
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248 KIND_PLATFORM_DEPENDENT = 1 << 10, |
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249 KIND_READ_WRITE = 1 << 11, |
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250 KIND_C1 = 1 << 12, |
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251 KIND_C2 = 1 << 13, |
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252 KIND_ARCH = 1 << 14, |
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253 KIND_SHARK = 1 << 15, |
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254 KIND_LP64_PRODUCT = 1 << 16, |
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255 KIND_COMMERCIAL = 1 << 17, |
12355 | 256 KIND_GRAAL = 1 << 18, |
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257 |
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258 KIND_MASK = ~VALUE_ORIGIN_MASK |
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259 }; |
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260 |
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261 const char* _type; |
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262 const char* _name; |
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263 void* _addr; |
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264 NOT_PRODUCT(const char* _doc;) |
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265 Flags _flags; |
0 | 266 |
267 // points to all Flags static array | |
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268 static Flag* flags; |
0 | 269 |
270 // number of flags | |
271 static size_t numFlags; | |
272 | |
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273 static Flag* find_flag(const char* name, size_t length, bool allow_locked = false, bool return_flag = false); |
11070 | 274 static Flag* fuzzy_match(const char* name, size_t length, bool allow_locked = false); |
0 | 275 |
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276 void check_writable(); |
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277 |
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278 bool is_bool() const; |
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279 bool get_bool() const; |
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280 void set_bool(bool value); |
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281 |
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282 bool is_intx() const; |
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283 intx get_intx() const; |
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284 void set_intx(intx value); |
0 | 285 |
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286 bool is_uintx() const; |
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287 uintx get_uintx() const; |
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288 void set_uintx(uintx value); |
0 | 289 |
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290 bool is_uint64_t() const; |
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291 uint64_t get_uint64_t() const; |
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292 void set_uint64_t(uint64_t value); |
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293 |
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294 bool is_double() const; |
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295 double get_double() const; |
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296 void set_double(double value); |
0 | 297 |
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298 bool is_ccstr() const; |
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299 bool ccstr_accumulates() const; |
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300 ccstr get_ccstr() const; |
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301 void set_ccstr(ccstr value); |
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302 |
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303 Flags get_origin(); |
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304 void set_origin(Flags origin); |
1064 | 305 |
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306 bool is_default(); |
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307 bool is_ergonomic(); |
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308 bool is_command_line(); |
0 | 309 |
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310 bool is_product() const; |
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311 bool is_manageable() const; |
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312 bool is_diagnostic() const; |
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313 bool is_experimental() const; |
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314 bool is_notproduct() const; |
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315 bool is_develop() const; |
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316 bool is_read_write() const; |
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317 bool is_commercial() const; |
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318 |
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319 bool is_constant_in_binary() const; |
0 | 320 |
321 bool is_unlocker() const; | |
322 bool is_unlocked() const; | |
323 bool is_writeable() const; | |
324 bool is_external() const; | |
325 | |
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326 bool is_unlocker_ext() const; |
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327 bool is_unlocked_ext() const; |
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328 bool is_writeable_ext() const; |
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329 bool is_external_ext() const; |
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330 |
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331 void get_locked_message(char*, int) const; |
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332 void get_locked_message_ext(char*, int) const; |
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333 |
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334 void print_on(outputStream* st, bool withComments = false ); |
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335 void print_kind(outputStream* st); |
0 | 336 void print_as_flag(outputStream* st); |
337 }; | |
338 | |
339 // debug flags control various aspects of the VM and are global accessible | |
340 | |
341 // use FlagSetting to temporarily change some debug flag | |
342 // e.g. FlagSetting fs(DebugThisAndThat, true); | |
343 // restored to previous value upon leaving scope | |
344 class FlagSetting { | |
345 bool val; | |
346 bool* flag; | |
347 public: | |
348 FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; } | |
349 ~FlagSetting() { *flag = val; } | |
350 }; | |
351 | |
352 | |
353 class CounterSetting { | |
354 intx* counter; | |
355 public: | |
356 CounterSetting(intx* cnt) { counter = cnt; (*counter)++; } | |
357 ~CounterSetting() { (*counter)--; } | |
358 }; | |
359 | |
360 | |
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361 class UIntFlagSetting { |
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362 uintx val; |
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363 uintx* flag; |
0 | 364 public: |
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365 UIntFlagSetting(uintx& fl, uintx newValue) { flag = &fl; val = fl; fl = newValue; } |
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366 ~UIntFlagSetting() { *flag = val; } |
0 | 367 }; |
368 | |
369 | |
370 class DoubleFlagSetting { | |
371 double val; | |
372 double* flag; | |
373 public: | |
374 DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; } | |
375 ~DoubleFlagSetting() { *flag = val; } | |
376 }; | |
377 | |
378 | |
379 class CommandLineFlags { | |
380 public: | |
381 static bool boolAt(char* name, size_t len, bool* value); | |
382 static bool boolAt(char* name, bool* value) { return boolAt(name, strlen(name), value); } | |
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383 static bool boolAtPut(char* name, size_t len, bool* value, Flag::Flags origin); |
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384 static bool boolAtPut(char* name, bool* value, Flag::Flags origin) { return boolAtPut(name, strlen(name), value, origin); } |
0 | 385 |
386 static bool intxAt(char* name, size_t len, intx* value); | |
387 static bool intxAt(char* name, intx* value) { return intxAt(name, strlen(name), value); } | |
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388 static bool intxAtPut(char* name, size_t len, intx* value, Flag::Flags origin); |
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389 static bool intxAtPut(char* name, intx* value, Flag::Flags origin) { return intxAtPut(name, strlen(name), value, origin); } |
0 | 390 |
391 static bool uintxAt(char* name, size_t len, uintx* value); | |
392 static bool uintxAt(char* name, uintx* value) { return uintxAt(name, strlen(name), value); } | |
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393 static bool uintxAtPut(char* name, size_t len, uintx* value, Flag::Flags origin); |
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394 static bool uintxAtPut(char* name, uintx* value, Flag::Flags origin) { return uintxAtPut(name, strlen(name), value, origin); } |
0 | 395 |
1064 | 396 static bool uint64_tAt(char* name, size_t len, uint64_t* value); |
397 static bool uint64_tAt(char* name, uint64_t* value) { return uint64_tAt(name, strlen(name), value); } | |
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398 static bool uint64_tAtPut(char* name, size_t len, uint64_t* value, Flag::Flags origin); |
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399 static bool uint64_tAtPut(char* name, uint64_t* value, Flag::Flags origin) { return uint64_tAtPut(name, strlen(name), value, origin); } |
1064 | 400 |
0 | 401 static bool doubleAt(char* name, size_t len, double* value); |
402 static bool doubleAt(char* name, double* value) { return doubleAt(name, strlen(name), value); } | |
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403 static bool doubleAtPut(char* name, size_t len, double* value, Flag::Flags origin); |
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404 static bool doubleAtPut(char* name, double* value, Flag::Flags origin) { return doubleAtPut(name, strlen(name), value, origin); } |
0 | 405 |
406 static bool ccstrAt(char* name, size_t len, ccstr* value); | |
407 static bool ccstrAt(char* name, ccstr* value) { return ccstrAt(name, strlen(name), value); } | |
14183 | 408 // Contract: Flag will make private copy of the incoming value. |
409 // Outgoing value is always malloc-ed, and caller MUST call free. | |
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410 static bool ccstrAtPut(char* name, size_t len, ccstr* value, Flag::Flags origin); |
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411 static bool ccstrAtPut(char* name, ccstr* value, Flag::Flags origin) { return ccstrAtPut(name, strlen(name), value, origin); } |
0 | 412 |
413 // Returns false if name is not a command line flag. | |
414 static bool wasSetOnCmdline(const char* name, bool* value); | |
4773 | 415 static void printSetFlags(outputStream* out); |
0 | 416 |
4773 | 417 static void printFlags(outputStream* out, bool withComments); |
0 | 418 |
419 static void verify() PRODUCT_RETURN; | |
420 }; | |
421 | |
422 // use this for flags that are true by default in the debug version but | |
423 // false in the optimized version, and vice versa | |
424 #ifdef ASSERT | |
425 #define trueInDebug true | |
426 #define falseInDebug false | |
427 #else | |
428 #define trueInDebug false | |
429 #define falseInDebug true | |
430 #endif | |
431 | |
432 // use this for flags that are true per default in the product build | |
433 // but false in development builds, and vice versa | |
434 #ifdef PRODUCT | |
435 #define trueInProduct true | |
436 #define falseInProduct false | |
437 #else | |
438 #define trueInProduct false | |
439 #define falseInProduct true | |
440 #endif | |
441 | |
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442 #ifdef JAVASE_EMBEDDED |
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443 #define falseInEmbedded false |
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444 #else |
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445 #define falseInEmbedded true |
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446 #endif |
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447 |
0 | 448 // develop flags are settable / visible only during development and are constant in the PRODUCT version |
449 // product flags are always settable / visible | |
450 // notproduct flags are settable / visible only during development and are not declared in the PRODUCT version | |
451 | |
452 // A flag must be declared with one of the following types: | |
453 // bool, intx, uintx, ccstr. | |
454 // The type "ccstr" is an alias for "const char*" and is used | |
455 // only in this file, because the macrology requires single-token type names. | |
456 | |
457 // Note: Diagnostic options not meant for VM tuning or for product modes. | |
458 // They are to be used for VM quality assurance or field diagnosis | |
459 // of VM bugs. They are hidden so that users will not be encouraged to | |
460 // try them as if they were VM ordinary execution options. However, they | |
461 // are available in the product version of the VM. Under instruction | |
462 // from support engineers, VM customers can turn them on to collect | |
463 // diagnostic information about VM problems. To use a VM diagnostic | |
464 // option, you must first specify +UnlockDiagnosticVMOptions. | |
465 // (This master switch also affects the behavior of -Xprintflags.) | |
350
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466 // |
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467 // experimental flags are in support of features that are not |
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468 // part of the officially supported product, but are available |
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469 // for experimenting with. They could, for example, be performance |
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470 // features that may not have undergone full or rigorous QA, but which may |
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471 // help performance in some cases and released for experimentation |
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472 // by the community of users and developers. This flag also allows one to |
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473 // be able to build a fully supported product that nonetheless also |
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474 // ships with some unsupported, lightly tested, experimental features. |
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475 // Like the UnlockDiagnosticVMOptions flag above, there is a corresponding |
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476 // UnlockExperimentalVMOptions flag, which allows the control and |
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477 // modification of the experimental flags. |
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478 // |
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479 // Nota bene: neither diagnostic nor experimental options should be used casually, |
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480 // and they are not supported on production loads, except under explicit |
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481 // direction from support engineers. |
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482 // |
0 | 483 // manageable flags are writeable external product flags. |
484 // They are dynamically writeable through the JDK management interface | |
485 // (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole. | |
486 // These flags are external exported interface (see CCC). The list of | |
487 // manageable flags can be queried programmatically through the management | |
488 // interface. | |
489 // | |
490 // A flag can be made as "manageable" only if | |
491 // - the flag is defined in a CCC as an external exported interface. | |
492 // - the VM implementation supports dynamic setting of the flag. | |
493 // This implies that the VM must *always* query the flag variable | |
494 // and not reuse state related to the flag state at any given time. | |
495 // - you want the flag to be queried programmatically by the customers. | |
496 // | |
497 // product_rw flags are writeable internal product flags. | |
498 // They are like "manageable" flags but for internal/private use. | |
499 // The list of product_rw flags are internal/private flags which | |
500 // may be changed/removed in a future release. It can be set | |
501 // through the management interface to get/set value | |
502 // when the name of flag is supplied. | |
503 // | |
504 // A flag can be made as "product_rw" only if | |
505 // - the VM implementation supports dynamic setting of the flag. | |
506 // This implies that the VM must *always* query the flag variable | |
507 // and not reuse state related to the flag state at any given time. | |
508 // | |
509 // Note that when there is a need to support develop flags to be writeable, | |
510 // it can be done in the same way as product_rw. | |
511 | |
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512 #define RUNTIME_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw, lp64_product) \ |
113
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513 \ |
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514 lp64_product(bool, UseCompressedOops, false, \ |
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515 "Use 32-bit object references in 64-bit VM. " \ |
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516 "lp64_product means flag is always constant in 32 bit VM") \ |
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517 \ |
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518 lp64_product(bool, UseCompressedClassPointers, false, \ |
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519 "Use 32-bit class pointers in 64-bit VM. " \ |
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520 "lp64_product means flag is always constant in 32 bit VM") \ |
0 | 521 \ |
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522 notproduct(bool, CheckCompressedOops, true, \ |
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523 "Generate checks in encoding/decoding code in debug VM") \ |
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524 \ |
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525 product_pd(uintx, HeapBaseMinAddress, \ |
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526 "OS specific low limit for heap base address") \ |
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527 \ |
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528 diagnostic(bool, PrintCompressedOopsMode, false, \ |
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529 "Print compressed oops base address and encoding mode") \ |
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530 \ |
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531 lp64_product(intx, ObjectAlignmentInBytes, 8, \ |
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532 "Default object alignment in bytes, 8 is minimum") \ |
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533 \ |
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534 product(bool, AssumeMP, false, \ |
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535 "Instruct the VM to assume multiple processors are available") \ |
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536 \ |
0 | 537 /* UseMembar is theoretically a temp flag used for memory barrier \ |
538 * removal testing. It was supposed to be removed before FCS but has \ | |
539 * been re-added (see 6401008) */ \ | |
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540 product_pd(bool, UseMembar, \ |
0 | 541 "(Unstable) Issues membars on thread state transitions") \ |
542 \ | |
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543 /* Temp PPC Flag to allow disabling the use of lwsync on ppc platforms \ |
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544 * that don't support it. This will be replaced by processor detection \ |
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545 * logic. \ |
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546 */ \ |
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547 product(bool, UsePPCLWSYNC, true, \ |
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548 "Use lwsync instruction if true, else use slower sync") \ |
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549 \ |
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550 develop(bool, CleanChunkPoolAsync, falseInEmbedded, \ |
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551 "Clean the chunk pool asynchronously") \ |
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552 \ |
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553 experimental(bool, AlwaysSafeConstructors, false, \ |
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554 "Force safe construction, as if all fields are final.") \ |
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555 \ |
6818 | 556 /* Temporary: See 6948537 */ \ |
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557 experimental(bool, UseMemSetInBOT, true, \ |
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558 "(Unstable) uses memset in BOT updates in GC code") \ |
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559 \ |
0 | 560 diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \ |
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561 "Enable normal processing of flags relating to field diagnostics")\ |
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562 \ |
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563 experimental(bool, UnlockExperimentalVMOptions, false, \ |
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564 "Enable normal processing of flags relating to experimental " \ |
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565 "features") \ |
0 | 566 \ |
567 product(bool, JavaMonitorsInStackTrace, true, \ | |
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568 "Print information about Java monitor locks when the stacks are" \ |
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569 "dumped") \ |
0 | 570 \ |
571 product_pd(bool, UseLargePages, \ | |
572 "Use large page memory") \ | |
573 \ | |
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574 product_pd(bool, UseLargePagesIndividualAllocation, \ |
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575 "Allocate large pages individually for better affinity") \ |
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576 \ |
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577 develop(bool, LargePagesIndividualAllocationInjectError, false, \ |
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578 "Fail large pages individual allocation") \ |
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579 \ |
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580 product(bool, UseLargePagesInMetaspace, false, \ |
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581 "Use large page memory in metaspace. " \ |
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582 "Only used if UseLargePages is enabled.") \ |
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583 \ |
0 | 584 develop(bool, TracePageSizes, false, \ |
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585 "Trace page size selection and usage") \ |
0 | 586 \ |
587 product(bool, UseNUMA, false, \ | |
588 "Use NUMA if available") \ | |
589 \ | |
3885 | 590 product(bool, UseNUMAInterleaving, false, \ |
591 "Interleave memory across NUMA nodes if available") \ | |
592 \ | |
593 product(uintx, NUMAInterleaveGranularity, 2*M, \ | |
594 "Granularity to use for NUMA interleaving on Windows OS") \ | |
595 \ | |
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596 product(bool, ForceNUMA, false, \ |
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597 "Force NUMA optimizations on single-node/UMA systems") \ |
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598 \ |
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599 product(uintx, NUMAChunkResizeWeight, 20, \ |
14358 | 600 "Percentage (0-100) used to weight the current sample when " \ |
0 | 601 "computing exponentially decaying average for " \ |
602 "AdaptiveNUMAChunkSizing") \ | |
603 \ | |
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604 product(uintx, NUMASpaceResizeRate, 1*G, \ |
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605 "Do not reallocate more than this amount per collection") \ |
0 | 606 \ |
607 product(bool, UseAdaptiveNUMAChunkSizing, true, \ | |
608 "Enable adaptive chunk sizing for NUMA") \ | |
609 \ | |
610 product(bool, NUMAStats, false, \ | |
611 "Print NUMA stats in detailed heap information") \ | |
612 \ | |
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613 product(uintx, NUMAPageScanRate, 256, \ |
0 | 614 "Maximum number of pages to include in the page scan procedure") \ |
615 \ | |
616 product_pd(bool, NeedsDeoptSuspend, \ | |
617 "True for register window machines (sparc/ia64)") \ | |
618 \ | |
619 product(intx, UseSSE, 99, \ | |
620 "Highest supported SSE instructions set on x86/x64") \ | |
621 \ | |
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622 product(bool, UseAES, false, \ |
6894 | 623 "Control whether AES instructions can be used on x86/x64") \ |
624 \ | |
0 | 625 product(uintx, LargePageSizeInBytes, 0, \ |
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626 "Large page size (0 to let VM choose the page size)") \ |
0 | 627 \ |
628 product(uintx, LargePageHeapSizeThreshold, 128*M, \ | |
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629 "Use large pages if maximum heap is at least this big") \ |
0 | 630 \ |
631 product(bool, ForceTimeHighResolution, false, \ | |
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632 "Using high time resolution (for Win32 only)") \ |
0 | 633 \ |
634 develop(bool, TraceItables, false, \ | |
635 "Trace initialization and use of itables") \ | |
636 \ | |
637 develop(bool, TracePcPatching, false, \ | |
638 "Trace usage of frame::patch_pc") \ | |
639 \ | |
640 develop(bool, TraceJumps, false, \ | |
641 "Trace assembly jumps in thread ring buffer") \ | |
642 \ | |
643 develop(bool, TraceRelocator, false, \ | |
644 "Trace the bytecode relocator") \ | |
645 \ | |
646 develop(bool, TraceLongCompiles, false, \ | |
647 "Print out every time compilation is longer than " \ | |
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648 "a given threshold") \ |
0 | 649 \ |
650 develop(bool, SafepointALot, false, \ | |
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651 "Generate a lot of safepoints. This works with " \ |
0 | 652 "GuaranteedSafepointInterval") \ |
653 \ | |
654 product_pd(bool, BackgroundCompilation, \ | |
655 "A thread requesting compilation is not blocked during " \ | |
656 "compilation") \ | |
657 \ | |
658 product(bool, PrintVMQWaitTime, false, \ | |
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659 "Print out the waiting time in VM operation queue") \ |
0 | 660 \ |
661 develop(bool, NoYieldsInMicrolock, false, \ | |
662 "Disable yields in microlock") \ | |
663 \ | |
664 develop(bool, TraceOopMapGeneration, false, \ | |
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665 "Show OopMapGeneration") \ |
0 | 666 \ |
667 product(bool, MethodFlushing, true, \ | |
668 "Reclamation of zombie and not-entrant methods") \ | |
669 \ | |
670 develop(bool, VerifyStack, false, \ | |
671 "Verify stack of each thread when it is entering a runtime call") \ | |
672 \ | |
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673 diagnostic(bool, ForceUnreachable, false, \ |
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674 "Make all non code cache addresses to be unreachable by " \ |
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675 "forcing use of 64bit literal fixups") \ |
0 | 676 \ |
677 notproduct(bool, StressDerivedPointers, false, \ | |
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678 "Force scavenge when a derived pointer is detected on stack " \ |
0 | 679 "after rtm call") \ |
680 \ | |
681 develop(bool, TraceDerivedPointers, false, \ | |
682 "Trace traversal of derived pointers on stack") \ | |
683 \ | |
684 notproduct(bool, TraceCodeBlobStacks, false, \ | |
685 "Trace stack-walk of codeblobs") \ | |
686 \ | |
687 product(bool, PrintJNIResolving, false, \ | |
688 "Used to implement -v:jni") \ | |
689 \ | |
690 notproduct(bool, PrintRewrites, false, \ | |
691 "Print methods that are being rewritten") \ | |
692 \ | |
693 product(bool, UseInlineCaches, true, \ | |
694 "Use Inline Caches for virtual calls ") \ | |
695 \ | |
696 develop(bool, InlineArrayCopy, true, \ | |
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697 "Inline arraycopy native that is known to be part of " \ |
0 | 698 "base library DLL") \ |
699 \ | |
700 develop(bool, InlineObjectHash, true, \ | |
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701 "Inline Object::hashCode() native that is known to be part " \ |
0 | 702 "of base library DLL") \ |
703 \ | |
704 develop(bool, InlineNatives, true, \ | |
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705 "Inline natives that are known to be part of base library DLL") \ |
0 | 706 \ |
707 develop(bool, InlineMathNatives, true, \ | |
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708 "Inline SinD, CosD, etc.") \ |
0 | 709 \ |
710 develop(bool, InlineClassNatives, true, \ | |
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711 "Inline Class.isInstance, etc") \ |
0 | 712 \ |
713 develop(bool, InlineThreadNatives, true, \ | |
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714 "Inline Thread.currentThread, etc") \ |
0 | 715 \ |
716 develop(bool, InlineUnsafeOps, true, \ | |
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717 "Inline memory ops (native methods) from sun.misc.Unsafe") \ |
0 | 718 \ |
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719 product(bool, CriticalJNINatives, true, \ |
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720 "Check for critical JNI entry points") \ |
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721 \ |
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722 notproduct(bool, StressCriticalJNINatives, false, \ |
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723 "Exercise register saving code in critical natives") \ |
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724 \ |
681 | 725 product(bool, UseSSE42Intrinsics, false, \ |
726 "SSE4.2 versions of intrinsics") \ | |
727 \ | |
6894 | 728 product(bool, UseAESIntrinsics, false, \ |
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729 "Use intrinsics for AES versions of crypto") \ |
6894 | 730 \ |
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731 product(bool, UseCRC32Intrinsics, false, \ |
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732 "use intrinsics for java.util.zip.CRC32") \ |
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733 \ |
0 | 734 develop(bool, TraceCallFixup, false, \ |
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735 "Trace all call fixups") \ |
0 | 736 \ |
737 develop(bool, DeoptimizeALot, false, \ | |
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738 "Deoptimize at every exit from the runtime system") \ |
0 | 739 \ |
434 | 740 notproduct(ccstrlist, DeoptimizeOnlyAt, "", \ |
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741 "A comma separated list of bcis to deoptimize at") \ |
0 | 742 \ |
743 product(bool, DeoptimizeRandom, false, \ | |
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744 "Deoptimize random frames on random exit from the runtime system")\ |
0 | 745 \ |
746 notproduct(bool, ZombieALot, false, \ | |
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747 "Create zombies (non-entrant) at exit from the runtime system") \ |
0 | 748 \ |
2177
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749 product(bool, UnlinkSymbolsALot, false, \ |
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750 "Unlink unreferenced symbols from the symbol table at safepoints")\ |
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751 \ |
0 | 752 notproduct(bool, WalkStackALot, false, \ |
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753 "Trace stack (no print) at every exit from the runtime system") \ |
0 | 754 \ |
4006 | 755 product(bool, Debugging, false, \ |
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756 "Set when executing debug methods in debug.cpp " \ |
0 | 757 "(to prevent triggering assertions)") \ |
758 \ | |
759 notproduct(bool, StrictSafepointChecks, trueInDebug, \ | |
760 "Enable strict checks that safepoints cannot happen for threads " \ | |
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761 "that use No_Safepoint_Verifier") \ |
0 | 762 \ |
763 notproduct(bool, VerifyLastFrame, false, \ | |
764 "Verify oops on last frame on entry to VM") \ | |
765 \ | |
766 develop(bool, TraceHandleAllocation, false, \ | |
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767 "Print out warnings when suspiciously many handles are allocated")\ |
0 | 768 \ |
769 product(bool, UseCompilerSafepoints, true, \ | |
770 "Stop at safepoints in compiled code") \ | |
771 \ | |
772 product(bool, FailOverToOldVerifier, true, \ | |
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773 "Fail over to old verifier when split verifier fails") \ |
0 | 774 \ |
775 develop(bool, ShowSafepointMsgs, false, \ | |
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776 "Show message about safepoint synchronization") \ |
0 | 777 \ |
778 product(bool, SafepointTimeout, false, \ | |
779 "Time out and warn or fail after SafepointTimeoutDelay " \ | |
780 "milliseconds if failed to reach safepoint") \ | |
781 \ | |
782 develop(bool, DieOnSafepointTimeout, false, \ | |
783 "Die upon failure to reach safepoint (see SafepointTimeout)") \ | |
784 \ | |
785 /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \ | |
786 /* typically, at most a few retries are needed */ \ | |
787 product(intx, SuspendRetryCount, 50, \ | |
788 "Maximum retry count for an external suspend request") \ | |
789 \ | |
790 product(intx, SuspendRetryDelay, 5, \ | |
791 "Milliseconds to delay per retry (* current_retry_count)") \ | |
792 \ | |
793 product(bool, AssertOnSuspendWaitFailure, false, \ | |
794 "Assert/Guarantee on external suspend wait failure") \ | |
795 \ | |
796 product(bool, TraceSuspendWaitFailures, false, \ | |
797 "Trace external suspend wait failures") \ | |
798 \ | |
799 product(bool, MaxFDLimit, true, \ | |
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800 "Bump the number of file descriptors to maximum in Solaris") \ |
0 | 801 \ |
4872
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802 diagnostic(bool, LogEvents, true, \ |
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803 "Enable the various ring buffer event logs") \ |
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804 \ |
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805 diagnostic(uintx, LogEventsBufferEntries, 10, \ |
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806 "Number of ring buffer event logs") \ |
0 | 807 \ |
808 product(bool, BytecodeVerificationRemote, true, \ | |
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809 "Enable the Java bytecode verifier for remote classes") \ |
0 | 810 \ |
811 product(bool, BytecodeVerificationLocal, false, \ | |
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812 "Enable the Java bytecode verifier for local classes") \ |
0 | 813 \ |
814 develop(bool, ForceFloatExceptions, trueInDebug, \ | |
815 "Force exceptions on FP stack under/overflow") \ | |
816 \ | |
817 develop(bool, VerifyStackAtCalls, false, \ | |
818 "Verify that the stack pointer is unchanged after calls") \ | |
819 \ | |
820 develop(bool, TraceJavaAssertions, false, \ | |
821 "Trace java language assertions") \ | |
822 \ | |
823 notproduct(bool, CheckAssertionStatusDirectives, false, \ | |
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824 "Temporary - see javaClasses.cpp") \ |
0 | 825 \ |
826 notproduct(bool, PrintMallocFree, false, \ | |
827 "Trace calls to C heap malloc/free allocation") \ | |
828 \ | |
1681
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829 product(bool, PrintOopAddress, false, \ |
0 | 830 "Always print the location of the oop") \ |
831 \ | |
14687
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832 notproduct(bool, VerifyCodeCache, false, \ |
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833 "Verify code cache on memory allocation/deallocation") \ |
0 | 834 \ |
835 develop(bool, ZapDeadCompiledLocals, false, \ | |
836 "Zap dead locals in compiler frames") \ | |
837 \ | |
838 notproduct(bool, ZapDeadLocalsOld, false, \ | |
839 "Zap dead locals (old version, zaps all frames when " \ | |
840 "entering the VM") \ | |
841 \ | |
842 notproduct(bool, CheckOopishValues, false, \ | |
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843 "Warn if value contains oop (requires ZapDeadLocals)") \ |
0 | 844 \ |
845 develop(bool, UseMallocOnly, false, \ | |
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846 "Use only malloc/free for allocation (no resource area/arena)") \ |
0 | 847 \ |
848 develop(bool, PrintMalloc, false, \ | |
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849 "Print all malloc/free calls") \ |
0 | 850 \ |
2250 | 851 develop(bool, PrintMallocStatistics, false, \ |
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852 "Print malloc/free statistics") \ |
2250 | 853 \ |
0 | 854 develop(bool, ZapResourceArea, trueInDebug, \ |
855 "Zap freed resource/arena space with 0xABABABAB") \ | |
856 \ | |
857 notproduct(bool, ZapVMHandleArea, trueInDebug, \ | |
858 "Zap freed VM handle space with 0xBCBCBCBC") \ | |
859 \ | |
860 develop(bool, ZapJNIHandleArea, trueInDebug, \ | |
861 "Zap freed JNI handle space with 0xFEFEFEFE") \ | |
862 \ | |
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863 notproduct(bool, ZapStackSegments, trueInDebug, \ |
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864 "Zap allocated/freed stack segments with 0xFADFADED") \ |
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865 \ |
263
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866 develop(bool, ZapUnusedHeapArea, trueInDebug, \ |
0 | 867 "Zap unused heap space with 0xBAADBABE") \ |
868 \ | |
263
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869 develop(bool, TraceZapUnusedHeapArea, false, \ |
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870 "Trace zapping of unused heap space") \ |
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871 \ |
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872 develop(bool, CheckZapUnusedHeapArea, false, \ |
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873 "Check zapping of unused heap space") \ |
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874 \ |
481
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|
875 develop(bool, ZapFillerObjects, trueInDebug, \ |
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diff
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876 "Zap filler objects with 0xDEAFBABE") \ |
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|
877 \ |
0 | 878 develop(bool, PrintVMMessages, true, \ |
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879 "Print VM messages on console") \ |
0 | 880 \ |
881 product(bool, PrintGCApplicationConcurrentTime, false, \ | |
882 "Print the time the application has been running") \ | |
883 \ | |
884 product(bool, PrintGCApplicationStoppedTime, false, \ | |
885 "Print the time the application has been stopped") \ | |
886 \ | |
6605 | 887 diagnostic(bool, VerboseVerification, false, \ |
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888 "Display detailed verification details") \ |
6605 | 889 \ |
1490
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|
890 notproduct(uintx, ErrorHandlerTest, 0, \ |
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891 "If > 0, provokes an error after VM initialization; the value " \ |
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892 "determines which error to provoke. See test_error_handler() " \ |
1490
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|
893 "in debug.cpp.") \ |
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|
894 \ |
0 | 895 develop(bool, Verbose, false, \ |
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896 "Print additional debugging information from other modes") \ |
0 | 897 \ |
898 develop(bool, PrintMiscellaneous, false, \ | |
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899 "Print uncategorized debugging information (requires +Verbose)") \ |
0 | 900 \ |
901 develop(bool, WizardMode, false, \ | |
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902 "Print much more debugging information") \ |
0 | 903 \ |
904 product(bool, ShowMessageBoxOnError, false, \ | |
905 "Keep process alive on VM fatal error") \ | |
906 \ | |
2204
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|
907 product(bool, CreateMinidumpOnCrash, false, \ |
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|
908 "Create minidump on VM fatal error") \ |
63d374c54045
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changeset
|
909 \ |
0 | 910 product_pd(bool, UseOSErrorReporting, \ |
911 "Let VM fatal error propagate to the OS (ie. WER on Windows)") \ | |
912 \ | |
913 product(bool, SuppressFatalErrorMessage, false, \ | |
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914 "Report NO fatal error message (avoid deadlock)") \ |
0 | 915 \ |
916 product(ccstrlist, OnError, "", \ | |
917 "Run user-defined commands on fatal error; see VMError.cpp " \ | |
918 "for examples") \ | |
919 \ | |
920 product(ccstrlist, OnOutOfMemoryError, "", \ | |
921 "Run user-defined commands on first java.lang.OutOfMemoryError") \ | |
922 \ | |
615
c6c601a0f2d6
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|
923 manageable(bool, HeapDumpBeforeFullGC, false, \ |
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924 "Dump heap to file before any major stop-the-world GC") \ |
615
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
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parents:
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diff
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|
925 \ |
c6c601a0f2d6
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changeset
|
926 manageable(bool, HeapDumpAfterFullGC, false, \ |
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927 "Dump heap to file after any major stop-the-world GC") \ |
615
c6c601a0f2d6
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|
928 \ |
0 | 929 manageable(bool, HeapDumpOnOutOfMemoryError, false, \ |
930 "Dump heap to file when java.lang.OutOfMemoryError is thrown") \ | |
931 \ | |
932 manageable(ccstr, HeapDumpPath, NULL, \ | |
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933 "When HeapDumpOnOutOfMemoryError is on, the path (filename or " \ |
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|
934 "directory) of the dump file (defaults to java_pid<pid>.hprof " \ |
0 | 935 "in the working directory)") \ |
936 \ | |
937 develop(uintx, SegmentedHeapDumpThreshold, 2*G, \ | |
938 "Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) " \ | |
939 "when the heap usage is larger than this") \ | |
940 \ | |
941 develop(uintx, HeapDumpSegmentSize, 1*G, \ | |
942 "Approximate segment size when generating a segmented heap dump") \ | |
943 \ | |
944 develop(bool, BreakAtWarning, false, \ | |
945 "Execute breakpoint upon encountering VM warning") \ | |
946 \ | |
947 develop(bool, TraceVMOperation, false, \ | |
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948 "Trace VM operations") \ |
0 | 949 \ |
950 develop(bool, UseFakeTimers, false, \ | |
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951 "Tell whether the VM should use system time or a fake timer") \ |
0 | 952 \ |
6197 | 953 product(ccstr, NativeMemoryTracking, "off", \ |
954 "Native memory tracking options") \ | |
955 \ | |
6770
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|
956 diagnostic(bool, PrintNMTStatistics, false, \ |
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|
957 "Print native memory tracking summary data if it is on") \ |
9a86ddfc6c8f
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|
958 \ |
8810
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|
959 diagnostic(bool, AutoShutdownNMT, true, \ |
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|
960 "Automatically shutdown native memory tracking under stress " \ |
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961 "situations. When set to false, native memory tracking tries to " \ |
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|
962 "stay alive at the expense of JVM performance") \ |
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|
963 \ |
0 | 964 diagnostic(bool, LogCompilation, false, \ |
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|
965 "Log compilation activity in detail to LogFile") \ |
0 | 966 \ |
967 product(bool, PrintCompilation, false, \ | |
968 "Print compilations") \ | |
969 \ | |
970 diagnostic(bool, TraceNMethodInstalls, false, \ | |
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971 "Trace nmethod installation") \ |
0 | 972 \ |
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|
973 diagnostic(intx, ScavengeRootsInCode, 2, \ |
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974 "0: do not allow scavengable oops in the code cache; " \ |
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975 "1: allow scavenging from the code cache; " \ |
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976 "2: emit as many constants as the compiler can see") \ |
989
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977 \ |
0 | 978 product(bool, AlwaysRestoreFPU, false, \ |
979 "Restore the FPU control word after every JNI call (expensive)") \ | |
980 \ | |
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981 diagnostic(bool, PrintCompilation2, false, \ |
0 | 982 "Print additional statistics per compilation") \ |
983 \ | |
100
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984 diagnostic(bool, PrintAdapterHandlers, false, \ |
0 | 985 "Print code generated for i2c/c2i adapters") \ |
986 \ | |
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987 diagnostic(bool, VerifyAdapterCalls, trueInDebug, \ |
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988 "Verify that i2c/c2i adapters are called properly") \ |
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989 \ |
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990 develop(bool, VerifyAdapterSharing, false, \ |
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991 "Verify that the code for shared adapters is the equivalent") \ |
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992 \ |
100
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993 diagnostic(bool, PrintAssembly, false, \ |
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994 "Print assembly code (using external disassembler.so)") \ |
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995 \ |
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996 diagnostic(ccstr, PrintAssemblyOptions, NULL, \ |
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997 "Print options string passed to disassembler.so") \ |
100
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998 \ |
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999 product(bool, PrintNMethodStatistics, false, \ |
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1000 "Print a summary statistic for the generated nmethods") \ |
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1001 \ |
100
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1002 diagnostic(bool, PrintNMethods, false, \ |
0 | 1003 "Print assembly code for nmethods when generated") \ |
1004 \ | |
100
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1005 diagnostic(bool, PrintNativeNMethods, false, \ |
0 | 1006 "Print assembly code for native nmethods when generated") \ |
1007 \ | |
1008 develop(bool, PrintDebugInfo, false, \ | |
1009 "Print debug information for all nmethods when generated") \ | |
1010 \ | |
1011 develop(bool, PrintRelocations, false, \ | |
1012 "Print relocation information for all nmethods when generated") \ | |
1013 \ | |
1014 develop(bool, PrintDependencies, false, \ | |
1015 "Print dependency information for all nmethods when generated") \ | |
1016 \ | |
1017 develop(bool, PrintExceptionHandlers, false, \ | |
1018 "Print exception handler tables for all nmethods when generated") \ | |
1019 \ | |
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1020 develop(bool, StressCompiledExceptionHandlers, false, \ |
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1021 "Exercise compiled exception handlers") \ |
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1022 \ |
0 | 1023 develop(bool, InterceptOSException, false, \ |
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1024 "Start debugger when an implicit OS (e.g. NULL) " \ |
0 | 1025 "exception happens") \ |
1026 \ | |
7595
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1027 product(bool, PrintCodeCache, false, \ |
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1028 "Print the code cache memory usage when exiting") \ |
0 | 1029 \ |
1030 develop(bool, PrintCodeCache2, false, \ | |
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1031 "Print detailed usage information on the code cache when exiting")\ |
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1032 \ |
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1033 product(bool, PrintCodeCacheOnCompilation, false, \ |
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1034 "Print the code cache memory usage each time a method is " \ |
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1035 "compiled") \ |
0 | 1036 \ |
100
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1037 diagnostic(bool, PrintStubCode, false, \ |
0 | 1038 "Print generated stub code") \ |
1039 \ | |
1040 product(bool, StackTraceInThrowable, true, \ | |
1041 "Collect backtrace in throwable when exception happens") \ | |
1042 \ | |
1043 product(bool, OmitStackTraceInFastThrow, true, \ | |
1044 "Omit backtraces for some 'hot' exceptions in optimized code") \ | |
1045 \ | |
1046 product(bool, ProfilerPrintByteCodeStatistics, false, \ | |
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1047 "Print bytecode statistics when dumping profiler output") \ |
0 | 1048 \ |
1049 product(bool, ProfilerRecordPC, false, \ | |
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1050 "Collect ticks for each 16 byte interval of compiled code") \ |
0 | 1051 \ |
1064 | 1052 product(bool, ProfileVM, false, \ |
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1053 "Profile ticks that fall within VM (either in the VM Thread " \ |
0 | 1054 "or VM code called through stubs)") \ |
1055 \ | |
1056 product(bool, ProfileIntervals, false, \ | |
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1057 "Print profiles for each interval (see ProfileIntervalsTicks)") \ |
0 | 1058 \ |
1059 notproduct(bool, ProfilerCheckIntervals, false, \ | |
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1060 "Collect and print information on spacing of profiler ticks") \ |
0 | 1061 \ |
1062 develop(bool, PrintJVMWarnings, false, \ | |
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1063 "Print warnings for unimplemented JVM functions") \ |
0 | 1064 \ |
1870
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1065 product(bool, PrintWarnings, true, \ |
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1066 "Print JVM warnings to output stream") \ |
1870
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1067 \ |
0 | 1068 notproduct(uintx, WarnOnStalledSpinLock, 0, \ |
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1069 "Print warnings for stalled SpinLocks") \ |
0 | 1070 \ |
1071 product(bool, RegisterFinalizersAtInit, true, \ | |
1072 "Register finalizable objects at end of Object.<init> or " \ | |
1064 | 1073 "after allocation") \ |
0 | 1074 \ |
1075 develop(bool, RegisterReferences, true, \ | |
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1076 "Tell whether the VM should register soft/weak/final/phantom " \ |
0 | 1077 "references") \ |
1078 \ | |
1079 develop(bool, IgnoreRewrites, false, \ | |
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1080 "Suppress rewrites of bytecodes in the oopmap generator. " \ |
0 | 1081 "This is unsafe!") \ |
1082 \ | |
1083 develop(bool, PrintCodeCacheExtension, false, \ | |
1084 "Print extension of code cache") \ | |
1085 \ | |
1086 develop(bool, UsePrivilegedStack, true, \ | |
1087 "Enable the security JVM functions") \ | |
1088 \ | |
1089 develop(bool, ProtectionDomainVerification, true, \ | |
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1090 "Verify protection domain before resolution in system dictionary")\ |
0 | 1091 \ |
1092 product(bool, ClassUnloading, true, \ | |
1093 "Do unloading of classes") \ | |
1094 \ | |
1095 develop(bool, DisableStartThread, false, \ | |
1096 "Disable starting of additional Java threads " \ | |
1097 "(for debugging only)") \ | |
1098 \ | |
1099 develop(bool, MemProfiling, false, \ | |
1100 "Write memory usage profiling to log file") \ | |
1101 \ | |
1102 notproduct(bool, PrintSystemDictionaryAtExit, false, \ | |
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1103 "Print the system dictionary at exit") \ |
0 | 1104 \ |
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1105 experimental(intx, PredictedLoadedClassCount, 0, \ |
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1106 "Experimental: Tune loaded class cache starting size") \ |
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1107 \ |
0 | 1108 diagnostic(bool, UnsyncloadClass, false, \ |
514 | 1109 "Unstable: VM calls loadClass unsynchronized. Custom " \ |
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1110 "class loader must call VM synchronized for findClass " \ |
514 | 1111 "and defineClass.") \ |
1112 \ | |
1113 product(bool, AlwaysLockClassLoader, false, \ | |
1114 "Require the VM to acquire the class loader lock before calling " \ | |
1115 "loadClass() even for class loaders registering " \ | |
1064 | 1116 "as parallel capable") \ |
514 | 1117 \ |
1118 product(bool, AllowParallelDefineClass, false, \ | |
1119 "Allow parallel defineClass requests for class loaders " \ | |
1064 | 1120 "registering as parallel capable") \ |
514 | 1121 \ |
1122 product(bool, MustCallLoadClassInternal, false, \ | |
1064 | 1123 "Call loadClassInternal() rather than loadClass()") \ |
0 | 1124 \ |
1125 product_pd(bool, DontYieldALot, \ | |
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1126 "Throw away obvious excess yield calls (for Solaris only)") \ |
0 | 1127 \ |
1128 product_pd(bool, ConvertSleepToYield, \ | |
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1129 "Convert sleep(0) to thread yield " \ |
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1130 "(may be off for Solaris to improve GUI)") \ |
0 | 1131 \ |
1132 product(bool, ConvertYieldToSleep, false, \ | |
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1133 "Convert yield to a sleep of MinSleepInterval to simulate Win32 " \ |
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1134 "behavior (Solaris only)") \ |
0 | 1135 \ |
1136 product(bool, UseBoundThreads, true, \ | |
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1137 "Bind user level threads to kernel threads (for Solaris only)") \ |
0 | 1138 \ |
1139 develop(bool, UseDetachedThreads, true, \ | |
1140 "Use detached threads that are recycled upon termination " \ | |
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1141 "(for Solaris only)") \ |
0 | 1142 \ |
1143 product(bool, UseLWPSynchronization, true, \ | |
1144 "Use LWP-based instead of libthread-based synchronization " \ | |
1145 "(SPARC only)") \ | |
1146 \ | |
370
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1147 product(ccstr, SyncKnobs, NULL, \ |
0 | 1148 "(Unstable) Various monitor synchronization tunables") \ |
1149 \ | |
1150 product(intx, EmitSync, 0, \ | |
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1151 "(Unsafe, Unstable) " \ |
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1152 "Control emission of inline sync fast-path code") \ |
0 | 1153 \ |
1587 | 1154 product(intx, MonitorBound, 0, "Bound Monitor population") \ |
1155 \ | |
1156 product(bool, MonitorInUseLists, false, "Track Monitors for Deflation") \ | |
1157 \ | |
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1158 product(intx, SyncFlags, 0, "(Unsafe, Unstable) Experimental Sync flags") \ |
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1159 \ |
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1160 product(intx, SyncVerbose, 0, "(Unstable)") \ |
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1161 \ |
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1162 product(intx, ClearFPUAtPark, 0, "(Unsafe, Unstable)") \ |
0 | 1163 \ |
7587 | 1164 product(intx, hashCode, 5, \ |
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1165 "(Unstable) select hashCode generation algorithm") \ |
0 | 1166 \ |
1167 product(intx, WorkAroundNPTLTimedWaitHang, 1, \ | |
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1168 "(Unstable, Linux-specific) " \ |
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1169 "avoid NPTL-FUTEX hang pthread_cond_timedwait") \ |
0 | 1170 \ |
1064 | 1171 product(bool, FilterSpuriousWakeups, true, \ |
1172 "Prevent spurious or premature wakeups from object.wait " \ | |
1173 "(Solaris only)") \ | |
0 | 1174 \ |
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1175 product(intx, NativeMonitorTimeout, -1, "(Unstable)") \ |
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1176 \ |
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1177 product(intx, NativeMonitorFlags, 0, "(Unstable)") \ |
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1178 \ |
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1179 product(intx, NativeMonitorSpinLimit, 20, "(Unstable)") \ |
0 | 1180 \ |
1181 develop(bool, UsePthreads, false, \ | |
1182 "Use pthread-based instead of libthread-based synchronization " \ | |
1183 "(SPARC only)") \ | |
1184 \ | |
1185 product(bool, AdjustConcurrency, false, \ | |
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1186 "Call thr_setconcurrency at thread creation time to avoid " \ |
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1187 "LWP starvation on MP systems (for Solaris Only)") \ |
0 | 1188 \ |
1189 product(bool, ReduceSignalUsage, false, \ | |
1190 "Reduce the use of OS signals in Java and/or the VM") \ | |
1191 \ | |
1192 develop_pd(bool, ShareVtableStubs, \ | |
1193 "Share vtable stubs (smaller code but worse branch prediction") \ | |
1194 \ | |
1195 develop(bool, LoadLineNumberTables, true, \ | |
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1196 "Tell whether the class file parser loads line number tables") \ |
0 | 1197 \ |
1198 develop(bool, LoadLocalVariableTables, true, \ | |
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1199 "Tell whether the class file parser loads local variable tables") \ |
0 | 1200 \ |
1201 develop(bool, LoadLocalVariableTypeTables, true, \ | |
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1202 "Tell whether the class file parser loads local variable type" \ |
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1203 "tables") \ |
0 | 1204 \ |
1205 product(bool, AllowUserSignalHandlers, false, \ | |
1206 "Do not complain if the application installs signal handlers " \ | |
1207 "(Solaris & Linux only)") \ | |
1208 \ | |
1209 product(bool, UseSignalChaining, true, \ | |
1210 "Use signal-chaining to invoke signal handlers installed " \ | |
1211 "by the application (Solaris & Linux only)") \ | |
1212 \ | |
1213 product(bool, UseAltSigs, false, \ | |
1214 "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \ | |
1064 | 1215 "internal signals (Solaris only)") \ |
0 | 1216 \ |
1217 product(bool, AllowJNIEnvProxy, false, \ | |
1218 "Allow JNIEnv proxies for jdbx") \ | |
1219 \ | |
1220 product(bool, JNIDetachReleasesMonitors, true, \ | |
1221 "JNI DetachCurrentThread releases monitors owned by thread") \ | |
1222 \ | |
1223 product(bool, RestoreMXCSROnJNICalls, false, \ | |
1224 "Restore MXCSR when returning from JNI calls") \ | |
1225 \ | |
1226 product(bool, CheckJNICalls, false, \ | |
1227 "Verify all arguments to JNI calls") \ | |
1228 \ | |
1229 product(bool, UseFastJNIAccessors, true, \ | |
1230 "Use optimized versions of Get<Primitive>Field") \ | |
1231 \ | |
1232 product(bool, EagerXrunInit, false, \ | |
1233 "Eagerly initialize -Xrun libraries; allows startup profiling, " \ | |
12836
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1234 "but not all -Xrun libraries may support the state of the VM " \ |
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1235 "at this time") \ |
0 | 1236 \ |
1237 product(bool, PreserveAllAnnotations, false, \ | |
12836
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1238 "Preserve RuntimeInvisibleAnnotations as well " \ |
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1239 "as RuntimeVisibleAnnotations") \ |
0 | 1240 \ |
1241 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \ | |
1242 "Number of OutOfMemoryErrors preallocated with backtrace") \ | |
1243 \ | |
1244 product(bool, LazyBootClassLoader, true, \ | |
1245 "Enable/disable lazy opening of boot class path entries") \ | |
1246 \ | |
405 | 1247 product(bool, UseXMMForArrayCopy, false, \ |
1248 "Use SSE2 MOVQ instruction for Arraycopy") \ | |
1249 \ | |
0 | 1250 product(intx, FieldsAllocationStyle, 1, \ |
1366
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1251 "0 - type based with oops first, 1 - with oops last, " \ |
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diff
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1252 "2 - oops in super and sub classes are together") \ |
0 | 1253 \ |
1254 product(bool, CompactFields, true, \ | |
1255 "Allocate nonstatic fields in gaps between previous fields") \ | |
1256 \ | |
7587 | 1257 notproduct(bool, PrintFieldLayout, false, \ |
1258 "Print field layout for each class") \ | |
1259 \ | |
1260 product(intx, ContendedPaddingWidth, 128, \ | |
1261 "How many bytes to pad the fields/classes marked @Contended with")\ | |
1262 \ | |
1263 product(bool, EnableContended, true, \ | |
1264 "Enable @Contended annotation support") \ | |
1265 \ | |
1266 product(bool, RestrictContended, true, \ | |
1267 "Restrict @Contended to trusted classes") \ | |
1268 \ | |
0 | 1269 product(bool, UseBiasedLocking, true, \ |
1270 "Enable biased locking in JVM") \ | |
1271 \ | |
1272 product(intx, BiasedLockingStartupDelay, 4000, \ | |
1273 "Number of milliseconds to wait before enabling biased locking") \ | |
1274 \ | |
1275 diagnostic(bool, PrintBiasedLockingStatistics, false, \ | |
1276 "Print statistics of biased locking in JVM") \ | |
1277 \ | |
1278 product(intx, BiasedLockingBulkRebiasThreshold, 20, \ | |
1279 "Threshold of number of revocations per type to try to " \ | |
1280 "rebias all objects in the heap of that type") \ | |
1281 \ | |
1282 product(intx, BiasedLockingBulkRevokeThreshold, 40, \ | |
1283 "Threshold of number of revocations per type to permanently " \ | |
1284 "revoke biases of all objects in the heap of that type") \ | |
1285 \ | |
1286 product(intx, BiasedLockingDecayTime, 25000, \ | |
1287 "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \ | |
1288 "type after previous bulk rebias") \ | |
1289 \ | |
1290 /* tracing */ \ | |
1291 \ | |
1292 notproduct(bool, TraceRuntimeCalls, false, \ | |
1293 "Trace run-time calls") \ | |
1294 \ | |
1295 develop(bool, TraceJNICalls, false, \ | |
1296 "Trace JNI calls") \ | |
1297 \ | |
14333
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1298 develop(bool, StressRewriter, false, \ |
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1299 "Stress linktime bytecode rewriting") \ |
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|
1300 \ |
0 | 1301 notproduct(bool, TraceJVMCalls, false, \ |
1302 "Trace JVM calls") \ | |
1303 \ | |
370
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1304 product(ccstr, TraceJVMTI, NULL, \ |
0 | 1305 "Trace flags for JVMTI functions and events") \ |
1306 \ | |
1307 /* This option can change an EMCP method into an obsolete method. */ \ | |
1308 /* This can affect tests that except specific methods to be EMCP. */ \ | |
1309 /* This option should be used with caution. */ \ | |
1310 product(bool, StressLdcRewrite, false, \ | |
1311 "Force ldc -> ldc_w rewrite during RedefineClasses") \ | |
1312 \ | |
1313 product(intx, TraceRedefineClasses, 0, \ | |
1314 "Trace level for JVMTI RedefineClasses") \ | |
1315 \ | |
1574 | 1316 develop(bool, StressMethodComparator, false, \ |
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1317 "Run the MethodComparator on all loaded methods") \ |
1574 | 1318 \ |
0 | 1319 /* change to false by default sometime after Mustang */ \ |
1320 product(bool, VerifyMergedCPBytecodes, true, \ | |
1321 "Verify bytecodes after RedefineClasses constant pool merging") \ | |
1322 \ | |
1323 develop(bool, TraceJNIHandleAllocation, false, \ | |
1324 "Trace allocation/deallocation of JNI handle blocks") \ | |
1325 \ | |
1326 develop(bool, TraceThreadEvents, false, \ | |
1327 "Trace all thread events") \ | |
1328 \ | |
1329 develop(bool, TraceBytecodes, false, \ | |
1330 "Trace bytecode execution") \ | |
1331 \ | |
1332 develop(bool, TraceClassInitialization, false, \ | |
1333 "Trace class initialization") \ | |
1334 \ | |
1335 develop(bool, TraceExceptions, false, \ | |
1336 "Trace exceptions") \ | |
1337 \ | |
1338 develop(bool, TraceICs, false, \ | |
1339 "Trace inline cache changes") \ | |
1340 \ | |
1341 notproduct(bool, TraceInvocationCounterOverflow, false, \ | |
1342 "Trace method invocation counter overflow") \ | |
1343 \ | |
1344 develop(bool, TraceInlineCacheClearing, false, \ | |
1345 "Trace clearing of inline caches in nmethods") \ | |
1346 \ | |
1347 develop(bool, TraceDependencies, false, \ | |
1348 "Trace dependencies") \ | |
1349 \ | |
1350 develop(bool, VerifyDependencies, trueInDebug, \ | |
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1351 "Exercise and verify the compilation dependency mechanism") \ |
0 | 1352 \ |
1353 develop(bool, TraceNewOopMapGeneration, false, \ | |
1354 "Trace OopMapGeneration") \ | |
1355 \ | |
1356 develop(bool, TraceNewOopMapGenerationDetailed, false, \ | |
1357 "Trace OopMapGeneration: print detailed cell states") \ | |
1358 \ | |
1359 develop(bool, TimeOopMap, false, \ | |
1360 "Time calls to GenerateOopMap::compute_map() in sum") \ | |
1361 \ | |
1362 develop(bool, TimeOopMap2, false, \ | |
1363 "Time calls to GenerateOopMap::compute_map() individually") \ | |
1364 \ | |
1365 develop(bool, TraceMonitorMismatch, false, \ | |
1366 "Trace monitor matching failures during OopMapGeneration") \ | |
1367 \ | |
1368 develop(bool, TraceOopMapRewrites, false, \ | |
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1369 "Trace rewriting of method oops during oop map generation") \ |
0 | 1370 \ |
1371 develop(bool, TraceSafepoint, false, \ | |
1372 "Trace safepoint operations") \ | |
1373 \ | |
1374 develop(bool, TraceICBuffer, false, \ | |
1375 "Trace usage of IC buffer") \ | |
1376 \ | |
1377 develop(bool, TraceCompiledIC, false, \ | |
1378 "Trace changes of compiled IC") \ | |
1379 \ | |
1380 notproduct(bool, TraceZapDeadLocals, false, \ | |
1381 "Trace zapping dead locals") \ | |
1382 \ | |
1383 develop(bool, TraceStartupTime, false, \ | |
1384 "Trace setup time") \ | |
1385 \ | |
1386 develop(bool, TraceProtectionDomainVerification, false, \ | |
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1387 "Trace protection domain verification") \ |
0 | 1388 \ |
1389 develop(bool, TraceClearedExceptions, false, \ | |
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1390 "Print when an exception is forcibly cleared") \ |
0 | 1391 \ |
1392 product(bool, TraceClassResolution, false, \ | |
1393 "Trace all constant pool resolutions (for debugging)") \ | |
1394 \ | |
1395 product(bool, TraceBiasedLocking, false, \ | |
1396 "Trace biased locking in JVM") \ | |
1397 \ | |
1398 product(bool, TraceMonitorInflation, false, \ | |
1399 "Trace monitor inflation in JVM") \ | |
1400 \ | |
1401 /* gc */ \ | |
1402 \ | |
1403 product(bool, UseSerialGC, false, \ | |
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1404 "Use the Serial garbage collector") \ |
342
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1405 \ |
1193
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|
1406 product(bool, UseG1GC, false, \ |
342
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|
1407 "Use the Garbage-First garbage collector") \ |
0 | 1408 \ |
1409 product(bool, UseParallelGC, false, \ | |
1410 "Use the Parallel Scavenge garbage collector") \ | |
1411 \ | |
1412 product(bool, UseParallelOldGC, false, \ | |
1413 "Use the Parallel Old garbage collector") \ | |
1414 \ | |
1415 product(uintx, HeapMaximumCompactionInterval, 20, \ | |
1416 "How often should we maximally compact the heap (not allowing " \ | |
1417 "any dead space)") \ | |
1418 \ | |
1419 product(uintx, HeapFirstMaximumCompactionCount, 3, \ | |
1420 "The collection count for the first maximum compaction") \ | |
1421 \ | |
1422 product(bool, UseMaximumCompactionOnSystemGC, true, \ | |
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1423 "Use maximum compaction in the Parallel Old garbage collector " \ |
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1424 "for a system GC") \ |
0 | 1425 \ |
1426 product(uintx, ParallelOldDeadWoodLimiterMean, 50, \ | |
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1427 "The mean used by the parallel compact dead wood " \ |
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1428 "limiter (a number between 0-100)") \ |
0 | 1429 \ |
1430 product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \ | |
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1431 "The standard deviation used by the parallel compact dead wood " \ |
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1432 "limiter (a number between 0-100)") \ |
0 | 1433 \ |
1434 product(uintx, ParallelGCThreads, 0, \ | |
1435 "Number of parallel threads parallel gc will use") \ | |
1436 \ | |
4095
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1437 product(bool, UseDynamicNumberOfGCThreads, false, \ |
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|
1438 "Dynamically choose the number of parallel threads " \ |
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|
1439 "parallel gc will use") \ |
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1440 \ |
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|
1441 diagnostic(bool, ForceDynamicNumberOfGCThreads, false, \ |
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1442 "Force dynamic selection of the number of " \ |
4095
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|
1443 "parallel threads parallel gc will use to aid debugging") \ |
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|
1444 \ |
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1445 product(uintx, HeapSizePerGCThread, ScaleForWordSize(64*M), \ |
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1446 "Size of heap (bytes) per GC thread used in calculating the " \ |
bca17e38de00
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|
1447 "number of GC threads") \ |
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|
1448 \ |
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1449 product(bool, TraceDynamicGCThreads, false, \ |
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1450 "Trace the dynamic GC thread usage") \ |
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1451 \ |
483
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|
1452 develop(bool, ParallelOldGCSplitALot, false, \ |
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1453 "Provoke splitting (copying data from a young gen space to " \ |
483
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|
1454 "multiple destination spaces)") \ |
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|
1455 \ |
0f773163217d
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|
1456 develop(uintx, ParallelOldGCSplitInterval, 3, \ |
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|
1457 "How often to provoke splitting a young gen space") \ |
0 | 1458 \ |
1284 | 1459 product(uintx, ConcGCThreads, 0, \ |
1460 "Number of threads concurrent gc will use") \ | |
342
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1461 \ |
0 | 1462 product(uintx, YoungPLABSize, 4096, \ |
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1463 "Size of young gen promotion LAB's (in HeapWords)") \ |
0 | 1464 \ |
1465 product(uintx, OldPLABSize, 1024, \ | |
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1466 "Size of old gen promotion LAB's (in HeapWords)") \ |
0 | 1467 \ |
1468 product(uintx, GCTaskTimeStampEntries, 200, \ | |
1469 "Number of time stamp entries per gc worker thread") \ | |
1470 \ | |
1471 product(bool, AlwaysTenure, false, \ | |
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1472 "Always tenure objects in eden (ParallelGC only)") \ |
0 | 1473 \ |
1474 product(bool, NeverTenure, false, \ | |
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1475 "Never tenure objects in eden, may tenure on overflow " \ |
1064 | 1476 "(ParallelGC only)") \ |
0 | 1477 \ |
1478 product(bool, ScavengeBeforeFullGC, true, \ | |
1064 | 1479 "Scavenge youngest generation before each full GC, " \ |
1480 "used with UseParallelGC") \ | |
0 | 1481 \ |
1482 develop(bool, ScavengeWithObjectsInToSpace, false, \ | |
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1483 "Allow scavenges to occur when to-space contains objects") \ |
0 | 1484 \ |
1485 product(bool, UseConcMarkSweepGC, false, \ | |
1486 "Use Concurrent Mark-Sweep GC in the old generation") \ | |
1487 \ | |
1488 product(bool, ExplicitGCInvokesConcurrent, false, \ | |
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1489 "A System.gc() request invokes a concurrent collection; " \ |
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1490 "(effective only when UseConcMarkSweepGC)") \ |
0 | 1491 \ |
1492 product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \ | |
1064 | 1493 "A System.gc() request invokes a concurrent collection and " \ |
1494 "also unloads classes during such a concurrent gc cycle " \ | |
1495 "(effective only when UseConcMarkSweepGC)") \ | |
0 | 1496 \ |
1520
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|
1497 product(bool, GCLockerInvokesConcurrent, false, \ |
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1498 "The exit of a JNI critical section necessitating a scavenge, " \ |
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1499 "also kicks off a background concurrent collection") \ |
1520
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|
1500 \ |
1991
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|
1501 product(uintx, GCLockerEdenExpansionPercent, 5, \ |
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1502 "How much the GC can expand the eden by while the GC locker " \ |
1991
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|
1503 "is active (as a percentage)") \ |
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|
1504 \ |
8853
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|
1505 diagnostic(intx, GCLockerRetryAllocationCount, 2, \ |
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|
1506 "Number of times to retry allocations when " \ |
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|
1507 "blocked by the GC locker") \ |
8853
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1508 \ |
0 | 1509 develop(bool, UseCMSAdaptiveFreeLists, true, \ |
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1510 "Use adaptive free lists in the CMS generation") \ |
0 | 1511 \ |
1512 develop(bool, UseAsyncConcMarkSweepGC, true, \ | |
1513 "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\ | |
1514 \ | |
1515 develop(bool, RotateCMSCollectionTypes, false, \ | |
1516 "Rotate the CMS collections among concurrent and STW") \ | |
1517 \ | |
1518 product(bool, UseCMSBestFit, true, \ | |
1519 "Use CMS best fit allocation strategy") \ | |
1520 \ | |
1521 product(bool, UseCMSCollectionPassing, true, \ | |
1522 "Use passing of collection from background to foreground") \ | |
1523 \ | |
1524 product(bool, UseParNewGC, false, \ | |
12836
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1525 "Use parallel threads in the new generation") \ |
0 | 1526 \ |
1527 product(bool, ParallelGCVerbose, false, \ | |
12836
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1528 "Verbose output for parallel gc") \ |
0 | 1529 \ |
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1530 product(uintx, ParallelGCBufferWastePct, 10, \ |
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1531 "Wasted fraction of parallel allocation buffer") \ |
0 | 1532 \ |
3357
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1533 diagnostic(bool, ParallelGCRetainPLAB, false, \ |
12836
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1534 "Retain parallel allocation buffers across scavenges; " \ |
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1535 "it is disabled because this currently conflicts with " \ |
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1536 "parallel card scanning under certain conditions.") \ |
0 | 1537 \ |
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1538 product(uintx, TargetPLABWastePct, 10, \ |
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1539 "Target wasted space in last buffer as percent of overall " \ |
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1540 "allocation") \ |
0 | 1541 \ |
1542 product(uintx, PLABWeight, 75, \ | |
14358 | 1543 "Percentage (0-100) used to weight the current sample when " \ |
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1544 "computing exponentially decaying average for ResizePLAB") \ |
0 | 1545 \ |
1546 product(bool, ResizePLAB, true, \ | |
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1547 "Dynamically resize (survivor space) promotion LAB's") \ |
0 | 1548 \ |
1549 product(bool, PrintPLAB, false, \ | |
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1550 "Print (survivor space) promotion LAB's sizing decisions") \ |
0 | 1551 \ |
1552 product(intx, ParGCArrayScanChunk, 50, \ | |
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1553 "Scan a subset of object array and push remainder, if array is " \ |
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1554 "bigger than this") \ |
0 | 1555 \ |
695 | 1556 product(bool, ParGCUseLocalOverflow, false, \ |
1557 "Instead of a global overflow list, use local overflow stacks") \ | |
1558 \ | |
679
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1559 product(bool, ParGCTrimOverflow, true, \ |
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1560 "Eagerly trim the local overflow lists " \ |
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1561 "(when ParGCUseLocalOverflow)") \ |
679
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1562 \ |
534 | 1563 notproduct(bool, ParGCWorkQueueOverflowALot, false, \ |
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1564 "Simulate work queue overflow in ParNew") \ |
534 | 1565 \ |
1566 notproduct(uintx, ParGCWorkQueueOverflowInterval, 1000, \ | |
1064 | 1567 "An `interval' counter that determines how frequently " \ |
1568 "we simulate overflow; a smaller number increases frequency") \ | |
534 | 1569 \ |
1570 product(uintx, ParGCDesiredObjsFromOverflowList, 20, \ | |
0 | 1571 "The desired number of objects to claim from the overflow list") \ |
1572 \ | |
4728
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1573 diagnostic(uintx, ParGCStridesPerThread, 2, \ |
3357
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1574 "The number of strides per worker thread that we divide up the " \ |
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1575 "card table scanning work into") \ |
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1576 \ |
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1577 diagnostic(intx, ParGCCardsPerStrideChunk, 256, \ |
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1578 "The number of cards in each chunk of the parallel chunks used " \ |
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1579 "during card table scanning") \ |
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1580 \ |
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1581 product(uintx, CMSParPromoteBlocksToClaim, 16, \ |
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1582 "Number of blocks to attempt to claim when refilling CMS LAB's " \ |
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1583 "for parallel GC") \ |
0 | 1584 \ |
1145
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1585 product(uintx, OldPLABWeight, 50, \ |
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1586 "Percentage (0-100) used to weight the current sample when " \ |
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1587 "computing exponentially decaying average for resizing " \ |
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1588 "CMSParPromoteBlocksToClaim") \ |
1145
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1589 \ |
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1590 product(bool, ResizeOldPLAB, true, \ |
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1591 "Dynamically resize (old gen) promotion LAB's") \ |
1145
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1592 \ |
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1593 product(bool, PrintOldPLAB, false, \ |
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1594 "Print (old gen) promotion LAB's sizing decisions") \ |
1145
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1595 \ |
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1596 product(uintx, CMSOldPLABMin, 16, \ |
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1597 "Minimum size of CMS gen promotion LAB caches per worker " \ |
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1598 "per block size") \ |
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1599 \ |
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1600 product(uintx, CMSOldPLABMax, 1024, \ |
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1601 "Maximum size of CMS gen promotion LAB caches per worker " \ |
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1602 "per block size") \ |
1145
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1603 \ |
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1604 product(uintx, CMSOldPLABNumRefills, 4, \ |
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1605 "Nominal number of refills of CMS gen promotion LAB cache " \ |
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1606 "per worker per block size") \ |
1145
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1607 \ |
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1608 product(bool, CMSOldPLABResizeQuicker, false, \ |
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1609 "React on-the-fly during a scavenge to a sudden " \ |
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1610 "change in block demand rate") \ |
1145
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1611 \ |
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1612 product(uintx, CMSOldPLABToleranceFactor, 4, \ |
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1613 "The tolerance of the phase-change detector for on-the-fly " \ |
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1614 "PLAB resizing during a scavenge") \ |
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1615 \ |
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1616 product(uintx, CMSOldPLABReactivityFactor, 2, \ |
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1617 "The gain in the feedback loop for on-the-fly PLAB resizing " \ |
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1618 "during a scavenge") \ |
1145
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1619 \ |
0 | 1620 product(bool, AlwaysPreTouch, false, \ |
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1621 "Force all freshly committed pages to be pre-touched") \ |
0 | 1622 \ |
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1623 product_pd(uintx, CMSYoungGenPerWorker, \ |
2368
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1624 "The maximum size of young gen chosen by default per GC worker " \ |
1064 | 1625 "thread available") \ |
0 | 1626 \ |
1627 product(bool, CMSIncrementalMode, false, \ | |
1628 "Whether CMS GC should operate in \"incremental\" mode") \ | |
1629 \ | |
1630 product(uintx, CMSIncrementalDutyCycle, 10, \ | |
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1631 "Percentage (0-100) of CMS incremental mode duty cycle. If " \ |
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1632 "CMSIncrementalPacing is enabled, then this is just the initial " \ |
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1633 "value.") \ |
0 | 1634 \ |
1635 product(bool, CMSIncrementalPacing, true, \ | |
1636 "Whether the CMS incremental mode duty cycle should be " \ | |
1637 "automatically adjusted") \ | |
1638 \ | |
1639 product(uintx, CMSIncrementalDutyCycleMin, 0, \ | |
12836
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1640 "Minimum percentage (0-100) of the CMS incremental duty cycle " \ |
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1641 "used when CMSIncrementalPacing is enabled") \ |
0 | 1642 \ |
1643 product(uintx, CMSIncrementalSafetyFactor, 10, \ | |
1064 | 1644 "Percentage (0-100) used to add conservatism when computing the " \ |
1645 "duty cycle") \ | |
0 | 1646 \ |
1647 product(uintx, CMSIncrementalOffset, 0, \ | |
12836
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1648 "Percentage (0-100) by which the CMS incremental mode duty cycle "\ |
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1649 "is shifted to the right within the period between young GCs") \ |
0 | 1650 \ |
1145
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1651 product(uintx, CMSExpAvgFactor, 50, \ |
14358 | 1652 "Percentage (0-100) used to weight the current sample when " \ |
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1653 "computing exponential averages for CMS statistics") \ |
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1654 \ |
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1655 product(uintx, CMS_FLSWeight, 75, \ |
14358 | 1656 "Percentage (0-100) used to weight the current sample when " \ |
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1657 "computing exponentially decaying averages for CMS FLS " \ |
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1658 "statistics") \ |
1145
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1659 \ |
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1660 product(uintx, CMS_FLSPadding, 1, \ |
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1661 "The multiple of deviation from mean to use for buffering " \ |
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1662 "against volatility in free list demand") \ |
0 | 1663 \ |
1664 product(uintx, FLSCoalescePolicy, 2, \ | |
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1665 "CMS: aggressiveness level for coalescing, increasing " \ |
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1666 "from 0 to 4") \ |
0 | 1667 \ |
1145
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1668 product(bool, FLSAlwaysCoalesceLarge, false, \ |
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1669 "CMS: larger free blocks are always available for coalescing") \ |
1145
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1670 \ |
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1671 product(double, FLSLargestBlockCoalesceProximity, 0.99, \ |
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1672 "CMS: the smaller the percentage the greater the coalescing " \ |
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1673 "force") \ |
1145
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1674 \ |
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1675 product(double, CMSSmallCoalSurplusPercent, 1.05, \ |
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1676 "CMS: the factor by which to inflate estimated demand of small " \ |
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1677 "block sizes to prevent coalescing with an adjoining block") \ |
1145
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1678 \ |
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1679 product(double, CMSLargeCoalSurplusPercent, 0.95, \ |
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|
1680 "CMS: the factor by which to inflate estimated demand of large " \ |
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1681 "block sizes to prevent coalescing with an adjoining block") \ |
1145
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1682 \ |
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1683 product(double, CMSSmallSplitSurplusPercent, 1.10, \ |
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1684 "CMS: the factor by which to inflate estimated demand of small " \ |
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1685 "block sizes to prevent splitting to supply demand for smaller " \ |
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1686 "blocks") \ |
1145
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1687 \ |
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1688 product(double, CMSLargeSplitSurplusPercent, 1.00, \ |
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1689 "CMS: the factor by which to inflate estimated demand of large " \ |
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1690 "block sizes to prevent splitting to supply demand for smaller " \ |
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1691 "blocks") \ |
1145
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1692 \ |
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1693 product(bool, CMSExtrapolateSweep, false, \ |
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1694 "CMS: cushion for block demand during sweep") \ |
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1695 \ |
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1696 product(uintx, CMS_SweepWeight, 75, \ |
1064 | 1697 "Percentage (0-100) used to weight the current sample when " \ |
1698 "computing exponentially decaying average for inter-sweep " \ | |
1699 "duration") \ | |
0 | 1700 \ |
1145
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1701 product(uintx, CMS_SweepPadding, 1, \ |
1064 | 1702 "The multiple of deviation from mean to use for buffering " \ |
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1703 "against volatility in inter-sweep duration") \ |
0 | 1704 \ |
1705 product(uintx, CMS_SweepTimerThresholdMillis, 10, \ | |
1706 "Skip block flux-rate sampling for an epoch unless inter-sweep " \ | |
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1707 "duration exceeds this threshold in milliseconds") \ |
0 | 1708 \ |
1709 develop(bool, CMSTraceIncrementalMode, false, \ | |
1710 "Trace CMS incremental mode") \ | |
1711 \ | |
1712 develop(bool, CMSTraceIncrementalPacing, false, \ | |
1713 "Trace CMS incremental mode pacing computation") \ | |
1714 \ | |
1715 develop(bool, CMSTraceThreadState, false, \ | |
1716 "Trace the CMS thread state (enable the trace_state() method)") \ | |
1717 \ | |
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1718 product(bool, CMSClassUnloadingEnabled, true, \ |
0 | 1719 "Whether class unloading enabled when using CMS GC") \ |
1720 \ | |
94
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1721 product(uintx, CMSClassUnloadingMaxInterval, 0, \ |
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1722 "When CMS class unloading is enabled, the maximum CMS cycle " \ |
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1723 "count for which classes may not be unloaded") \ |
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1724 \ |
0 | 1725 product(bool, CMSCompactWhenClearAllSoftRefs, true, \ |
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1726 "Compact when asked to collect CMS gen with " \ |
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1727 "clear_all_soft_refs()") \ |
0 | 1728 \ |
1729 product(bool, UseCMSCompactAtFullCollection, true, \ | |
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1730 "Use Mark-Sweep-Compact algorithm at full collections") \ |
0 | 1731 \ |
1732 product(uintx, CMSFullGCsBeforeCompaction, 0, \ | |
1733 "Number of CMS full collection done before compaction if > 0") \ | |
1734 \ | |
1735 develop(intx, CMSDictionaryChoice, 0, \ | |
1736 "Use BinaryTreeDictionary as default in the CMS generation") \ | |
1737 \ | |
1738 product(uintx, CMSIndexedFreeListReplenish, 4, \ | |
6818 | 1739 "Replenish an indexed free list with this number of chunks") \ |
0 | 1740 \ |
1145
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1741 product(bool, CMSReplenishIntermediate, true, \ |
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1742 "Replenish all intermediate free-list caches") \ |
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1743 \ |
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1744 product(bool, CMSSplitIndexedFreeListBlocks, true, \ |
1777
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1745 "When satisfying batched demand, split blocks from the " \ |
1145
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1746 "IndexedFreeList whose size is a multiple of requested size") \ |
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1747 \ |
0 | 1748 product(bool, CMSLoopWarn, false, \ |
1749 "Warn in case of excessive CMS looping") \ | |
1750 \ | |
1751 develop(bool, CMSOverflowEarlyRestoration, false, \ | |
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1752 "Restore preserved marks early") \ |
0 | 1753 \ |
1284 | 1754 product(uintx, MarkStackSize, NOT_LP64(32*K) LP64_ONLY(4*M), \ |
1755 "Size of marking stack") \ | |
1756 \ | |
1757 product(uintx, MarkStackSizeMax, NOT_LP64(4*M) LP64_ONLY(512*M), \ | |
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1758 "Maximum size of marking stack") \ |
0 | 1759 \ |
1760 notproduct(bool, CMSMarkStackOverflowALot, false, \ | |
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1761 "Simulate frequent marking stack / work queue overflow") \ |
0 | 1762 \ |
534 | 1763 notproduct(uintx, CMSMarkStackOverflowInterval, 1000, \ |
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1764 "An \"interval\" counter that determines how frequently " \ |
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1765 "to simulate overflow; a smaller number increases frequency") \ |
0 | 1766 \ |
1767 product(uintx, CMSMaxAbortablePrecleanLoops, 0, \ | |
1768 "Maximum number of abortable preclean iterations, if > 0") \ | |
1769 \ | |
1770 product(intx, CMSMaxAbortablePrecleanTime, 5000, \ | |
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1771 "Maximum time in abortable preclean (in milliseconds)") \ |
0 | 1772 \ |
1773 product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \ | |
1774 "Nominal minimum work per abortable preclean iteration") \ | |
1775 \ | |
1887
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1776 manageable(intx, CMSAbortablePrecleanWaitMillis, 100, \ |
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1777 "Time that we sleep between iterations when not given " \ |
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1778 "enough work per iteration") \ |
0 | 1779 \ |
1780 product(uintx, CMSRescanMultiple, 32, \ | |
1781 "Size (in cards) of CMS parallel rescan task") \ | |
1782 \ | |
1783 product(uintx, CMSConcMarkMultiple, 32, \ | |
1784 "Size (in cards) of CMS concurrent MT marking task") \ | |
1785 \ | |
1786 product(bool, CMSAbortSemantics, false, \ | |
1787 "Whether abort-on-overflow semantics is implemented") \ | |
1788 \ | |
11975 | 1789 product(bool, CMSParallelInitialMarkEnabled, true, \ |
1790 "Use the parallel initial mark.") \ | |
1791 \ | |
0 | 1792 product(bool, CMSParallelRemarkEnabled, true, \ |
1793 "Whether parallel remark enabled (only if ParNewGC)") \ | |
1794 \ | |
1795 product(bool, CMSParallelSurvivorRemarkEnabled, true, \ | |
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1796 "Whether parallel remark of survivor space " \ |
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1797 "enabled (effective only if CMSParallelRemarkEnabled)") \ |
0 | 1798 \ |
1799 product(bool, CMSPLABRecordAlways, true, \ | |
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1800 "Always record survivor space PLAB boundaries (effective only " \ |
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1801 "if CMSParallelSurvivorRemarkEnabled)") \ |
0 | 1802 \ |
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1803 product(bool, CMSEdenChunksRecordAlways, true, \ |
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1804 "Always record eden chunks used for the parallel initial mark " \ |
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1805 "or remark of eden") \ |
11973
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1806 \ |
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1807 product(bool, CMSPrintEdenSurvivorChunks, false, \ |
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1808 "Print the eden and the survivor chunks used for the parallel " \ |
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1809 "initial mark or remark of the eden/survivor spaces") \ |
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1810 \ |
0 | 1811 product(bool, CMSConcurrentMTEnabled, true, \ |
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1812 "Whether multi-threaded concurrent work enabled " \ |
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1813 "(effective only if ParNewGC)") \ |
0 | 1814 \ |
1815 product(bool, CMSPrecleaningEnabled, true, \ | |
1816 "Whether concurrent precleaning enabled") \ | |
1817 \ | |
1818 product(uintx, CMSPrecleanIter, 3, \ | |
1819 "Maximum number of precleaning iteration passes") \ | |
1820 \ | |
1821 product(uintx, CMSPrecleanNumerator, 2, \ | |
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1822 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence " \ |
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1823 "ratio") \ |
0 | 1824 \ |
1825 product(uintx, CMSPrecleanDenominator, 3, \ | |
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1826 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence " \ |
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1827 "ratio") \ |
0 | 1828 \ |
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1829 product(bool, CMSPrecleanRefLists1, true, \ |
0 | 1830 "Preclean ref lists during (initial) preclean phase") \ |
1831 \ | |
1832 product(bool, CMSPrecleanRefLists2, false, \ | |
1833 "Preclean ref lists during abortable preclean phase") \ | |
1834 \ | |
1835 product(bool, CMSPrecleanSurvivors1, false, \ | |
1836 "Preclean survivors during (initial) preclean phase") \ | |
1837 \ | |
1838 product(bool, CMSPrecleanSurvivors2, true, \ | |
1839 "Preclean survivors during abortable preclean phase") \ | |
1840 \ | |
1841 product(uintx, CMSPrecleanThreshold, 1000, \ | |
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1842 "Do not iterate again if number of dirty cards is less than this")\ |
0 | 1843 \ |
1844 product(bool, CMSCleanOnEnter, true, \ | |
1845 "Clean-on-enter optimization for reducing number of dirty cards") \ | |
1846 \ | |
1847 product(uintx, CMSRemarkVerifyVariant, 1, \ | |
1848 "Choose variant (1,2) of verification following remark") \ | |
1849 \ | |
1850 product(uintx, CMSScheduleRemarkEdenSizeThreshold, 2*M, \ | |
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1851 "If Eden size is below this, do not try to schedule remark") \ |
0 | 1852 \ |
1853 product(uintx, CMSScheduleRemarkEdenPenetration, 50, \ | |
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1854 "The Eden occupancy percentage (0-100) at which " \ |
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1855 "to try and schedule remark pause") \ |
0 | 1856 \ |
1857 product(uintx, CMSScheduleRemarkSamplingRatio, 5, \ | |
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1858 "Start sampling eden top at least before young gen " \ |
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1859 "occupancy reaches 1/<ratio> of the size at which " \ |
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1860 "we plan to schedule remark") \ |
0 | 1861 \ |
1862 product(uintx, CMSSamplingGrain, 16*K, \ | |
1863 "The minimum distance between eden samples for CMS (see above)") \ | |
1864 \ | |
1865 product(bool, CMSScavengeBeforeRemark, false, \ | |
1866 "Attempt scavenge before the CMS remark step") \ | |
1867 \ | |
1868 develop(bool, CMSTraceSweeper, false, \ | |
1869 "Trace some actions of the CMS sweeper") \ | |
1870 \ | |
1871 product(uintx, CMSWorkQueueDrainThreshold, 10, \ | |
1872 "Don't drain below this size per parallel worker/thief") \ | |
1873 \ | |
1887
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1874 manageable(intx, CMSWaitDuration, 2000, \ |
0 | 1875 "Time in milliseconds that CMS thread waits for young GC") \ |
1876 \ | |
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1877 develop(uintx, CMSCheckInterval, 1000, \ |
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1878 "Interval in milliseconds that CMS thread checks if it " \ |
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1879 "should start a collection cycle") \ |
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1880 \ |
0 | 1881 product(bool, CMSYield, true, \ |
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1882 "Yield between steps of CMS") \ |
0 | 1883 \ |
1884 product(uintx, CMSBitMapYieldQuantum, 10*M, \ | |
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1885 "Bitmap operations should process at most this many bits " \ |
0 | 1886 "between yields") \ |
1887 \ | |
1145
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1888 product(bool, CMSDumpAtPromotionFailure, false, \ |
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1889 "Dump useful information about the state of the CMS old " \ |
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1890 "generation upon a promotion failure") \ |
1145
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1891 \ |
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1892 product(bool, CMSPrintChunksInDump, false, \ |
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1893 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ |
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1894 "more detailed information about the free chunks") \ |
1145
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1895 \ |
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1896 product(bool, CMSPrintObjectsInDump, false, \ |
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1897 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ |
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1898 "more detailed information about the allocated objects") \ |
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1899 \ |
0 | 1900 diagnostic(bool, FLSVerifyAllHeapReferences, false, \ |
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1901 "Verify that all references across the FLS boundary " \ |
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1902 "are to valid objects") \ |
0 | 1903 \ |
1904 diagnostic(bool, FLSVerifyLists, false, \ | |
1905 "Do lots of (expensive) FreeListSpace verification") \ | |
1906 \ | |
1907 diagnostic(bool, FLSVerifyIndexTable, false, \ | |
1908 "Do lots of (expensive) FLS index table verification") \ | |
1909 \ | |
1910 develop(bool, FLSVerifyDictionary, false, \ | |
1911 "Do lots of (expensive) FLS dictionary verification") \ | |
1912 \ | |
1913 develop(bool, VerifyBlockOffsetArray, false, \ | |
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1914 "Do (expensive) block offset array verification") \ |
0 | 1915 \ |
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1916 diagnostic(bool, BlockOffsetArrayUseUnallocatedBlock, false, \ |
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1917 "Maintain _unallocated_block in BlockOffsetArray " \ |
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1918 "(currently applicable only to CMS collector)") \ |
0 | 1919 \ |
1920 develop(bool, TraceCMSState, false, \ | |
1921 "Trace the state of the CMS collection") \ | |
1922 \ | |
1923 product(intx, RefDiscoveryPolicy, 0, \ | |
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1924 "Select type of reference discovery policy: " \ |
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1925 "reference-based(0) or referent-based(1)") \ |
0 | 1926 \ |
1927 product(bool, ParallelRefProcEnabled, false, \ | |
1928 "Enable parallel reference processing whenever possible") \ | |
1929 \ | |
1930 product(bool, ParallelRefProcBalancingEnabled, true, \ | |
1931 "Enable balancing of reference processing queues") \ | |
1932 \ | |
8035 | 1933 product(uintx, CMSTriggerRatio, 80, \ |
0 | 1934 "Percentage of MinHeapFreeRatio in CMS generation that is " \ |
1064 | 1935 "allocated before a CMS collection cycle commences") \ |
0 | 1936 \ |
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1937 product(uintx, CMSBootstrapOccupancy, 50, \ |
0 | 1938 "Percentage CMS generation occupancy at which to " \ |
1064 | 1939 "initiate CMS collection for bootstrapping collection stats") \ |
0 | 1940 \ |
1941 product(intx, CMSInitiatingOccupancyFraction, -1, \ | |
1942 "Percentage CMS generation occupancy to start a CMS collection " \ | |
1064 | 1943 "cycle. A negative value means that CMSTriggerRatio is used") \ |
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1944 \ |
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1945 product(uintx, InitiatingHeapOccupancyPercent, 45, \ |
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1946 "Percentage of the (entire) heap occupancy to start a " \ |
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1947 "concurrent GC cycle. It is used by GCs that trigger a " \ |
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1948 "concurrent GC cycle based on the occupancy of the entire heap, " \ |
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1949 "not just one of the generations (e.g., G1). A value of 0 " \ |
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1950 "denotes 'do constant GC cycles'.") \ |
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1951 \ |
0 | 1952 product(bool, UseCMSInitiatingOccupancyOnly, false, \ |
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1953 "Only use occupancy as a criterion for starting a CMS collection")\ |
0 | 1954 \ |
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1955 product(uintx, CMSIsTooFullPercentage, 98, \ |
1064 | 1956 "An absolute ceiling above which CMS will always consider the " \ |
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1957 "unloading of classes when class unloading is enabled") \ |
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1958 \ |
0 | 1959 develop(bool, CMSTestInFreeList, false, \ |
1960 "Check if the coalesced range is already in the " \ | |
1064 | 1961 "free lists as claimed") \ |
0 | 1962 \ |
1963 notproduct(bool, CMSVerifyReturnedBytes, false, \ | |
1964 "Check that all the garbage collected was returned to the " \ | |
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1965 "free lists") \ |
0 | 1966 \ |
1967 notproduct(bool, ScavengeALot, false, \ | |
1968 "Force scavenge at every Nth exit from the runtime system " \ | |
1969 "(N=ScavengeALotInterval)") \ | |
1970 \ | |
1971 develop(bool, FullGCALot, false, \ | |
1972 "Force full gc at every Nth exit from the runtime system " \ | |
1973 "(N=FullGCALotInterval)") \ | |
1974 \ | |
1975 notproduct(bool, GCALotAtAllSafepoints, false, \ | |
1976 "Enforce ScavengeALot/GCALot at all potential safepoints") \ | |
1977 \ | |
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1978 product(bool, PrintPromotionFailure, false, \ |
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1979 "Print additional diagnostic information following " \ |
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1980 "promotion failure") \ |
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1981 \ |
0 | 1982 notproduct(bool, PromotionFailureALot, false, \ |
1983 "Use promotion failure handling on every youngest generation " \ | |
1984 "collection") \ | |
1985 \ | |
1986 develop(uintx, PromotionFailureALotCount, 1000, \ | |
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1987 "Number of promotion failures occurring at ParGCAllocBuffer " \ |
0 | 1988 "refill attempts (ParNew) or promotion attempts " \ |
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1989 "(other young collectors)") \ |
0 | 1990 \ |
1991 develop(uintx, PromotionFailureALotInterval, 5, \ | |
14358 | 1992 "Total collections between promotion failures a lot") \ |
0 | 1993 \ |
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1994 experimental(uintx, WorkStealingSleepMillis, 1, \ |
0 | 1995 "Sleep time when sleep is used for yields") \ |
1996 \ | |
2430 | 1997 experimental(uintx, WorkStealingYieldsBeforeSleep, 5000, \ |
14358 | 1998 "Number of yields before a sleep is done during work stealing") \ |
0 | 1999 \ |
1837
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2000 experimental(uintx, WorkStealingHardSpins, 4096, \ |
546
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2001 "Number of iterations in a spin loop between checks on " \ |
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2002 "time out of hard spin") \ |
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2003 \ |
1837
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2004 experimental(uintx, WorkStealingSpinToYieldRatio, 10, \ |
546
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2005 "Ratio of hard spins to calls to yield") \ |
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2006 \ |
1311
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2007 develop(uintx, ObjArrayMarkingStride, 512, \ |
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2008 "Number of object array elements to push onto the marking stack " \ |
1311
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2009 "before pushing a continuation entry") \ |
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2010 \ |
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2011 develop(bool, MetadataAllocationFailALot, false, \ |
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2012 "Fail metadata allocations at intervals controlled by " \ |
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2013 "MetadataAllocationFailALotInterval") \ |
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2014 \ |
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2015 develop(uintx, MetadataAllocationFailALotInterval, 1000, \ |
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2016 "Metadata allocation failure a lot interval") \ |
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2017 \ |
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2018 develop(bool, TraceMetadataChunkAllocation, false, \ |
7461
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2019 "Trace chunk metadata allocations") \ |
6725
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2020 \ |
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2021 product(bool, TraceMetadataHumongousAllocation, false, \ |
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2022 "Trace humongous metadata allocations") \ |
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2023 \ |
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2024 develop(bool, TraceMetavirtualspaceAllocation, false, \ |
7461
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2025 "Trace virtual space metadata allocations") \ |
6725
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2026 \ |
3779 | 2027 notproduct(bool, ExecuteInternalVMTests, false, \ |
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2028 "Enable execution of internal VM tests") \ |
3779 | 2029 \ |
12110
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2030 notproduct(bool, VerboseInternalVMTests, false, \ |
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|
2031 "Turn on logging for internal VM tests.") \ |
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2032 \ |
0 | 2033 product_pd(bool, UseTLAB, "Use thread-local object allocation") \ |
2034 \ | |
2035 product_pd(bool, ResizeTLAB, \ | |
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2036 "Dynamically resize TLAB size for threads") \ |
0 | 2037 \ |
2038 product(bool, ZeroTLAB, false, \ | |
2039 "Zero out the newly created TLAB") \ | |
2040 \ | |
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|
2041 product(bool, FastTLABRefill, true, \ |
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|
2042 "Use fast TLAB refill code") \ |
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|
2043 \ |
0 | 2044 product(bool, PrintTLAB, false, \ |
2045 "Print various TLAB related information") \ | |
2046 \ | |
2047 product(bool, TLABStats, true, \ | |
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2048 "Provide more detailed and expensive TLAB statistics " \ |
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2049 "(with PrintTLAB)") \ |
0 | 2050 \ |
2192
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2051 EMBEDDED_ONLY(product(bool, LowMemoryProtection, true, \ |
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diff
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|
2052 "Enable LowMemoryProtection")) \ |
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|
2053 \ |
0 | 2054 product_pd(bool, NeverActAsServerClassMachine, \ |
2055 "Never act like a server-class machine") \ | |
2056 \ | |
2057 product(bool, AlwaysActAsServerClassMachine, false, \ | |
2058 "Always act like a server-class machine") \ | |
2059 \ | |
1064 | 2060 product_pd(uint64_t, MaxRAM, \ |
2061 "Real memory size (in bytes) used to set maximum heap size") \ | |
2062 \ | |
2063 product(uintx, ErgoHeapSizeLimit, 0, \ | |
2064 "Maximum ergonomically set heap size (in bytes); zero means use " \ | |
2065 "MaxRAM / MaxRAMFraction") \ | |
2066 \ | |
2067 product(uintx, MaxRAMFraction, 4, \ | |
2068 "Maximum fraction (1/n) of real memory used for maximum heap " \ | |
2069 "size") \ | |
0 | 2070 \ |
2071 product(uintx, DefaultMaxRAMFraction, 4, \ | |
1064 | 2072 "Maximum fraction (1/n) of real memory used for maximum heap " \ |
2073 "size; deprecated: to be renamed to MaxRAMFraction") \ | |
2074 \ | |
2075 product(uintx, MinRAMFraction, 2, \ | |
14358 | 2076 "Minimum fraction (1/n) of real memory used for maximum heap " \ |
1064 | 2077 "size on systems with small physical memory size") \ |
2078 \ | |
2079 product(uintx, InitialRAMFraction, 64, \ | |
2080 "Fraction (1/n) of real memory used for initial heap size") \ | |
0 | 2081 \ |
8854
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2082 develop(uintx, MaxVirtMemFraction, 2, \ |
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2083 "Maximum fraction (1/n) of virtual memory used for ergonomically "\ |
8854
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|
2084 "determining maximum heap size") \ |
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|
2085 \ |
0 | 2086 product(bool, UseAutoGCSelectPolicy, false, \ |
2087 "Use automatic collection selection policy") \ | |
2088 \ | |
2089 product(uintx, AutoGCSelectPauseMillis, 5000, \ | |
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|
2090 "Automatic GC selection pause threshold in milliseconds") \ |
0 | 2091 \ |
2092 product(bool, UseAdaptiveSizePolicy, true, \ | |
2093 "Use adaptive generation sizing policies") \ | |
2094 \ | |
2095 product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \ | |
2096 "Use adaptive survivor sizing policies") \ | |
2097 \ | |
2098 product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \ | |
2099 "Use adaptive young-old sizing policies at minor collections") \ | |
2100 \ | |
2101 product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \ | |
2102 "Use adaptive young-old sizing policies at major collections") \ | |
2103 \ | |
2104 product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \ | |
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|
2105 "Include statistics from System.gc() for adaptive size policy") \ |
0 | 2106 \ |
2107 product(bool, UseAdaptiveGCBoundary, false, \ | |
2108 "Allow young-old boundary to move") \ | |
2109 \ | |
2110 develop(bool, TraceAdaptiveGCBoundary, false, \ | |
2111 "Trace young-old boundary moves") \ | |
2112 \ | |
2113 develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \ | |
2114 "Resize the virtual spaces of the young or old generations") \ | |
2115 \ | |
2116 product(uintx, AdaptiveSizeThroughPutPolicy, 0, \ | |
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2117 "Policy for changing generation size for throughput goals") \ |
0 | 2118 \ |
2119 product(uintx, AdaptiveSizePausePolicy, 0, \ | |
2120 "Policy for changing generation size for pause goals") \ | |
2121 \ | |
2122 develop(bool, PSAdjustTenuredGenForMinorPause, false, \ | |
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|
2123 "Adjust tenured generation to achieve a minor pause goal") \ |
0 | 2124 \ |
2125 develop(bool, PSAdjustYoungGenForMajorPause, false, \ | |
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|
2126 "Adjust young generation to achieve a major pause goal") \ |
0 | 2127 \ |
2128 product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \ | |
2129 "Number of steps where heuristics is used before data is used") \ | |
2130 \ | |
2131 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \ | |
2132 "Number of collections before the adaptive sizing is started") \ | |
2133 \ | |
2134 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \ | |
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2135 "Collection interval for printing information; zero means never") \ |
0 | 2136 \ |
2137 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \ | |
2138 "Use adaptive minimum footprint as a goal") \ | |
2139 \ | |
2140 product(uintx, AdaptiveSizePolicyWeight, 10, \ | |
2141 "Weight given to exponential resizing, between 0 and 100") \ | |
2142 \ | |
2143 product(uintx, AdaptiveTimeWeight, 25, \ | |
2144 "Weight given to time in adaptive policy, between 0 and 100") \ | |
2145 \ | |
2146 product(uintx, PausePadding, 1, \ | |
2147 "How much buffer to keep for pause time") \ | |
2148 \ | |
2149 product(uintx, PromotedPadding, 3, \ | |
2150 "How much buffer to keep for promotion failure") \ | |
2151 \ | |
2152 product(uintx, SurvivorPadding, 3, \ | |
2153 "How much buffer to keep for survivor overflow") \ | |
2154 \ | |
2155 product(uintx, ThresholdTolerance, 10, \ | |
2156 "Allowed collection cost difference between generations") \ | |
2157 \ | |
2158 product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \ | |
1064 | 2159 "If collection costs are within margin, reduce both by full " \ |
2160 "delta") \ | |
0 | 2161 \ |
2162 product(uintx, YoungGenerationSizeIncrement, 20, \ | |
2163 "Adaptive size percentage change in young generation") \ | |
2164 \ | |
2165 product(uintx, YoungGenerationSizeSupplement, 80, \ | |
2166 "Supplement to YoungedGenerationSizeIncrement used at startup") \ | |
2167 \ | |
2168 product(uintx, YoungGenerationSizeSupplementDecay, 8, \ | |
2169 "Decay factor to YoungedGenerationSizeSupplement") \ | |
2170 \ | |
2171 product(uintx, TenuredGenerationSizeIncrement, 20, \ | |
2172 "Adaptive size percentage change in tenured generation") \ | |
2173 \ | |
2174 product(uintx, TenuredGenerationSizeSupplement, 80, \ | |
2175 "Supplement to TenuredGenerationSizeIncrement used at startup") \ | |
2176 \ | |
2177 product(uintx, TenuredGenerationSizeSupplementDecay, 2, \ | |
2178 "Decay factor to TenuredGenerationSizeIncrement") \ | |
2179 \ | |
6818 | 2180 product(uintx, MaxGCPauseMillis, max_uintx, \ |
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2181 "Adaptive size policy maximum GC pause time goal in millisecond, "\ |
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2182 "or (G1 Only) the maximum GC time per MMU time slice") \ |
751 | 2183 \ |
1610
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2184 product(uintx, GCPauseIntervalMillis, 0, \ |
751 | 2185 "Time slice for MMU specification") \ |
0 | 2186 \ |
2187 product(uintx, MaxGCMinorPauseMillis, max_uintx, \ | |
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2188 "Adaptive size policy maximum GC minor pause time goal " \ |
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2189 "in millisecond") \ |
0 | 2190 \ |
2191 product(uintx, GCTimeRatio, 99, \ | |
2192 "Adaptive size policy application time to GC time ratio") \ | |
2193 \ | |
2194 product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \ | |
2195 "Adaptive size scale down factor for shrinking") \ | |
2196 \ | |
2197 product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \ | |
2198 "Adaptive size decays the major cost for long major intervals") \ | |
2199 \ | |
2200 product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \ | |
2201 "Time scale over which major costs decay") \ | |
2202 \ | |
2203 product(uintx, MinSurvivorRatio, 3, \ | |
2204 "Minimum ratio of young generation/survivor space size") \ | |
2205 \ | |
2206 product(uintx, InitialSurvivorRatio, 8, \ | |
12899
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|
2207 "Initial ratio of young generation/survivor space size") \ |
0 | 2208 \ |
2209 product(uintx, BaseFootPrintEstimate, 256*M, \ | |
2210 "Estimate of footprint other than Java Heap") \ | |
2211 \ | |
2212 product(bool, UseGCOverheadLimit, true, \ | |
2213 "Use policy to limit of proportion of time spent in GC " \ | |
2214 "before an OutOfMemory error is thrown") \ | |
2215 \ | |
2216 product(uintx, GCTimeLimit, 98, \ | |
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2217 "Limit of the proportion of time spent in GC before " \ |
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2218 "an OutOfMemoryError is thrown (used with GCHeapFreeLimit)") \ |
0 | 2219 \ |
2220 product(uintx, GCHeapFreeLimit, 2, \ | |
2221 "Minimum percentage of free space after a full GC before an " \ | |
2222 "OutOfMemoryError is thrown (used with GCTimeLimit)") \ | |
2223 \ | |
2224 develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \ | |
2225 "Number of consecutive collections before gc time limit fires") \ | |
2226 \ | |
2227 product(bool, PrintAdaptiveSizePolicy, false, \ | |
2228 "Print information about AdaptiveSizePolicy") \ | |
2229 \ | |
2230 product(intx, PrefetchCopyIntervalInBytes, -1, \ | |
2231 "How far ahead to prefetch destination area (<= 0 means off)") \ | |
2232 \ | |
2233 product(intx, PrefetchScanIntervalInBytes, -1, \ | |
2234 "How far ahead to prefetch scan area (<= 0 means off)") \ | |
2235 \ | |
2236 product(intx, PrefetchFieldsAhead, -1, \ | |
2237 "How many fields ahead to prefetch in oop scan (<= 0 means off)") \ | |
2238 \ | |
10186
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|
2239 diagnostic(bool, VerifySilently, false, \ |
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2240 "Do not print the verification progress") \ |
10186
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2241 \ |
9071
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|
2242 diagnostic(bool, VerifyDuringStartup, false, \ |
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2243 "Verify memory system before executing any Java code " \ |
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2244 "during VM initialization") \ |
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2245 \ |
0 | 2246 diagnostic(bool, VerifyBeforeExit, trueInDebug, \ |
2247 "Verify system before exiting") \ | |
2248 \ | |
2249 diagnostic(bool, VerifyBeforeGC, false, \ | |
2250 "Verify memory system before GC") \ | |
2251 \ | |
2252 diagnostic(bool, VerifyAfterGC, false, \ | |
2253 "Verify memory system after GC") \ | |
2254 \ | |
2255 diagnostic(bool, VerifyDuringGC, false, \ | |
2256 "Verify memory system during GC (between phases)") \ | |
2257 \ | |
390 | 2258 diagnostic(bool, GCParallelVerificationEnabled, true, \ |
2259 "Enable parallel memory system verification") \ | |
2260 \ | |
1166 | 2261 diagnostic(bool, DeferInitialCardMark, false, \ |
2262 "When +ReduceInitialCardMarks, explicitly defer any that " \ | |
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2263 "may arise from new_pre_store_barrier") \ |
1166 | 2264 \ |
0 | 2265 diagnostic(bool, VerifyRememberedSets, false, \ |
2266 "Verify GC remembered sets") \ | |
2267 \ | |
2268 diagnostic(bool, VerifyObjectStartArray, true, \ | |
2269 "Verify GC object start array if verify before/after") \ | |
2270 \ | |
2271 product(bool, DisableExplicitGC, false, \ | |
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2272 "Ignore calls to System.gc()") \ |
0 | 2273 \ |
2274 notproduct(bool, CheckMemoryInitialization, false, \ | |
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2275 "Check memory initialization") \ |
0 | 2276 \ |
2277 product(bool, CollectGen0First, false, \ | |
2278 "Collect youngest generation before each full GC") \ | |
2279 \ | |
2280 diagnostic(bool, BindCMSThreadToCPU, false, \ | |
2281 "Bind CMS Thread to CPU if possible") \ | |
2282 \ | |
2283 diagnostic(uintx, CPUForCMSThread, 0, \ | |
2284 "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \ | |
2285 \ | |
2286 product(bool, BindGCTaskThreadsToCPUs, false, \ | |
2287 "Bind GCTaskThreads to CPUs if possible") \ | |
2288 \ | |
2289 product(bool, UseGCTaskAffinity, false, \ | |
2290 "Use worker affinity when asking for GCTasks") \ | |
2291 \ | |
2292 product(uintx, ProcessDistributionStride, 4, \ | |
2293 "Stride through processors when distributing processes") \ | |
2294 \ | |
2295 product(uintx, CMSCoordinatorYieldSleepCount, 10, \ | |
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2296 "Number of times the coordinator GC thread will sleep while " \ |
0 | 2297 "yielding before giving up and resuming GC") \ |
2298 \ | |
2299 product(uintx, CMSYieldSleepCount, 0, \ | |
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2300 "Number of times a GC thread (minus the coordinator) " \ |
0 | 2301 "will sleep while yielding before giving up and resuming GC") \ |
2302 \ | |
2303 /* gc tracing */ \ | |
2304 manageable(bool, PrintGC, false, \ | |
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2305 "Print message at garbage collection") \ |
0 | 2306 \ |
2307 manageable(bool, PrintGCDetails, false, \ | |
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2308 "Print more details at garbage collection") \ |
0 | 2309 \ |
2310 manageable(bool, PrintGCDateStamps, false, \ | |
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2311 "Print date stamps at garbage collection") \ |
0 | 2312 \ |
2313 manageable(bool, PrintGCTimeStamps, false, \ | |
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2314 "Print timestamps at garbage collection") \ |
0 | 2315 \ |
2316 product(bool, PrintGCTaskTimeStamps, false, \ | |
2317 "Print timestamps for individual gc worker thread tasks") \ | |
2318 \ | |
2319 develop(intx, ConcGCYieldTimeout, 0, \ | |
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2320 "If non-zero, assert that GC threads yield within this " \ |
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2321 "number of milliseconds") \ |
0 | 2322 \ |
2323 notproduct(bool, TraceMarkSweep, false, \ | |
2324 "Trace mark sweep") \ | |
2325 \ | |
2326 product(bool, PrintReferenceGC, false, \ | |
2327 "Print times spent handling reference objects during GC " \ | |
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2328 "(enabled only when PrintGCDetails)") \ |
0 | 2329 \ |
2330 develop(bool, TraceReferenceGC, false, \ | |
2331 "Trace handling of soft/weak/final/phantom references") \ | |
2332 \ | |
2333 develop(bool, TraceFinalizerRegistration, false, \ | |
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2334 "Trace registration of final references") \ |
0 | 2335 \ |
2336 notproduct(bool, TraceScavenge, false, \ | |
2337 "Trace scavenge") \ | |
2338 \ | |
2339 product_rw(bool, TraceClassLoading, false, \ | |
2340 "Trace all classes loaded") \ | |
2341 \ | |
2342 product(bool, TraceClassLoadingPreorder, false, \ | |
2343 "Trace all classes loaded in order referenced (not loaded)") \ | |
2344 \ | |
2345 product_rw(bool, TraceClassUnloading, false, \ | |
2346 "Trace unloading of classes") \ | |
2347 \ | |
2348 product_rw(bool, TraceLoaderConstraints, false, \ | |
2349 "Trace loader constraints") \ | |
2350 \ | |
6725
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2351 develop(bool, TraceClassLoaderData, false, \ |
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2352 "Trace class loader loader_data lifetime") \ |
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|
2353 \ |
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|
2354 product(uintx, InitialBootClassLoaderMetaspaceSize, \ |
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|
2355 NOT_LP64(2200*K) LP64_ONLY(4*M), \ |
6725
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2356 "Initial size of the boot class loader data metaspace") \ |
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2357 \ |
0 | 2358 product(bool, TraceGen0Time, false, \ |
2359 "Trace accumulated time for Gen 0 collection") \ | |
2360 \ | |
2361 product(bool, TraceGen1Time, false, \ | |
2362 "Trace accumulated time for Gen 1 collection") \ | |
2363 \ | |
2364 product(bool, PrintTenuringDistribution, false, \ | |
2365 "Print tenuring age information") \ | |
2366 \ | |
2367 product_rw(bool, PrintHeapAtGC, false, \ | |
2368 "Print heap layout before and after each GC") \ | |
2369 \ | |
838
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|
2370 product_rw(bool, PrintHeapAtGCExtended, false, \ |
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2371 "Print extended information about the layout of the heap " \ |
838
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|
2372 "when -XX:+PrintHeapAtGC is set") \ |
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|
2373 \ |
0 | 2374 product(bool, PrintHeapAtSIGBREAK, true, \ |
2375 "Print heap layout in response to SIGBREAK") \ | |
2376 \ | |
615
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|
2377 manageable(bool, PrintClassHistogramBeforeFullGC, false, \ |
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|
2378 "Print a class histogram before any major stop-world GC") \ |
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|
2379 \ |
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|
2380 manageable(bool, PrintClassHistogramAfterFullGC, false, \ |
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|
2381 "Print a class histogram after any major stop-world GC") \ |
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|
2382 \ |
0 | 2383 manageable(bool, PrintClassHistogram, false, \ |
2384 "Print a histogram of class instances") \ | |
2385 \ | |
2386 develop(bool, TraceWorkGang, false, \ | |
2387 "Trace activities of work gangs") \ | |
2388 \ | |
2389 product(bool, TraceParallelOldGCTasks, false, \ | |
2390 "Trace multithreaded GC activity") \ | |
2391 \ | |
2392 develop(bool, TraceBlockOffsetTable, false, \ | |
2393 "Print BlockOffsetTable maps") \ | |
2394 \ | |
2395 develop(bool, TraceCardTableModRefBS, false, \ | |
2396 "Print CardTableModRefBS maps") \ | |
2397 \ | |
2398 develop(bool, TraceGCTaskManager, false, \ | |
2399 "Trace actions of the GC task manager") \ | |
2400 \ | |
2401 develop(bool, TraceGCTaskQueue, false, \ | |
2402 "Trace actions of the GC task queues") \ | |
2403 \ | |
6818 | 2404 diagnostic(bool, TraceGCTaskThread, false, \ |
0 | 2405 "Trace actions of the GC task threads") \ |
2406 \ | |
2407 product(bool, PrintParallelOldGCPhaseTimes, false, \ | |
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2408 "Print the time taken by each phase in ParallelOldGC " \ |
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2409 "(PrintGCDetails must also be enabled)") \ |
0 | 2410 \ |
2411 develop(bool, TraceParallelOldGCMarkingPhase, false, \ | |
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2412 "Trace marking phase in ParallelOldGC") \ |
0 | 2413 \ |
2414 develop(bool, TraceParallelOldGCSummaryPhase, false, \ | |
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2415 "Trace summary phase in ParallelOldGC") \ |
0 | 2416 \ |
2417 develop(bool, TraceParallelOldGCCompactionPhase, false, \ | |
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2418 "Trace compaction phase in ParallelOldGC") \ |
0 | 2419 \ |
2420 develop(bool, TraceParallelOldGCDensePrefix, false, \ | |
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2421 "Trace dense prefix computation for ParallelOldGC") \ |
0 | 2422 \ |
2423 develop(bool, IgnoreLibthreadGPFault, false, \ | |
2424 "Suppress workaround for libthread GP fault") \ | |
2425 \ | |
139
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2426 product(bool, PrintJNIGCStalls, false, \ |
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2427 "Print diagnostic message when GC is stalled " \ |
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2428 "by JNI critical section") \ |
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2429 \ |
10405 | 2430 experimental(double, ObjectCountCutOffPercent, 0.5, \ |
2431 "The percentage of the used heap that the instances of a class " \ | |
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2432 "must occupy for the class to generate a trace event") \ |
10405 | 2433 \ |
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|
2434 /* GC log rotation setting */ \ |
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2435 \ |
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|
2436 product(bool, UseGCLogFileRotation, false, \ |
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2437 "Rotate gclog files (for long running applications). It requires "\ |
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2438 "-Xloggc:<filename>") \ |
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|
2439 \ |
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2440 product(uintx, NumberOfGCLogFiles, 0, \ |
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2441 "Number of gclog files in rotation " \ |
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2442 "(default: 0, no rotation)") \ |
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|
2443 \ |
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2444 product(uintx, GCLogFileSize, 0, \ |
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2445 "GC log file size (default: 0 bytes, no rotation). " \ |
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2446 "It requires UseGCLogFileRotation") \ |
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2447 \ |
0 | 2448 /* JVMTI heap profiling */ \ |
2449 \ | |
2450 diagnostic(bool, TraceJVMTIObjectTagging, false, \ | |
2451 "Trace JVMTI object tagging calls") \ | |
2452 \ | |
2453 diagnostic(bool, VerifyBeforeIteration, false, \ | |
2454 "Verify memory system before JVMTI iteration") \ | |
2455 \ | |
2456 /* compiler interface */ \ | |
2457 \ | |
2458 develop(bool, CIPrintCompilerName, false, \ | |
2459 "when CIPrint is active, print the name of the active compiler") \ | |
2460 \ | |
2461 develop(bool, CIPrintCompileQueue, false, \ | |
2462 "display the contents of the compile queue whenever a " \ | |
2463 "compilation is enqueued") \ | |
2464 \ | |
2465 develop(bool, CIPrintRequests, false, \ | |
2466 "display every request for compilation") \ | |
2467 \ | |
2468 product(bool, CITime, false, \ | |
2469 "collect timing information for compilation") \ | |
2470 \ | |
2471 develop(bool, CITimeEach, false, \ | |
2472 "display timing information after each successful compilation") \ | |
2473 \ | |
6843 | 2474 develop(bool, CICountOSR, false, \ |
0 | 2475 "use a separate counter when assigning ids to osr compilations") \ |
2476 \ | |
2477 develop(bool, CICompileNatives, true, \ | |
2478 "compile native methods if supported by the compiler") \ | |
2479 \ | |
2480 develop_pd(bool, CICompileOSR, \ | |
2481 "compile on stack replacement methods if supported by the " \ | |
2482 "compiler") \ | |
2483 \ | |
2484 develop(bool, CIPrintMethodCodes, false, \ | |
2485 "print method bytecodes of the compiled code") \ | |
2486 \ | |
2487 develop(bool, CIPrintTypeFlow, false, \ | |
2488 "print the results of ciTypeFlow analysis") \ | |
2489 \ | |
2490 develop(bool, CITraceTypeFlow, false, \ | |
2491 "detailed per-bytecode tracing of ciTypeFlow analysis") \ | |
2492 \ | |
2403 | 2493 develop(intx, OSROnlyBCI, -1, \ |
2494 "OSR only at this bci. Negative values mean exclude that bci") \ | |
2495 \ | |
0 | 2496 /* compiler */ \ |
2497 \ | |
2498 product(intx, CICompilerCount, CI_COMPILER_COUNT, \ | |
2499 "Number of compiler threads to run") \ | |
2500 \ | |
2501 product(intx, CompilationPolicyChoice, 0, \ | |
2502 "which compilation policy (0/1)") \ | |
2503 \ | |
2504 develop(bool, UseStackBanging, true, \ | |
2505 "use stack banging for stack overflow checks (required for " \ | |
2506 "proper StackOverflow handling; disable only to measure cost " \ | |
2507 "of stackbanging)") \ | |
2508 \ | |
2509 develop(bool, UseStrictFP, true, \ | |
2510 "use strict fp if modifier strictfp is set") \ | |
2511 \ | |
2512 develop(bool, GenerateSynchronizationCode, true, \ | |
2513 "generate locking/unlocking code for synchronized methods and " \ | |
2514 "monitors") \ | |
2515 \ | |
2516 develop(bool, GenerateCompilerNullChecks, true, \ | |
2517 "Generate explicit null checks for loads/stores/calls") \ | |
2518 \ | |
2519 develop(bool, GenerateRangeChecks, true, \ | |
2520 "Generate range checks for array accesses") \ | |
2521 \ | |
2522 develop_pd(bool, ImplicitNullChecks, \ | |
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2523 "Generate code for implicit null checks") \ |
0 | 2524 \ |
14440
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2525 product_pd(bool, TrapBasedNullChecks, \ |
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2526 "Generate code for null checks that uses a cmp and trap " \ |
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2527 "instruction raising SIGTRAP. This is only used if an access to" \ |
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2528 "null (+offset) will not raise a SIGSEGV, i.e.," \ |
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2529 "ImplicitNullChecks don't work (PPC64).") \ |
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2530 \ |
0 | 2531 product(bool, PrintSafepointStatistics, false, \ |
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2532 "Print statistics about safepoint synchronization") \ |
0 | 2533 \ |
2534 product(intx, PrintSafepointStatisticsCount, 300, \ | |
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2535 "Total number of safepoint statistics collected " \ |
0 | 2536 "before printing them out") \ |
2537 \ | |
2538 product(intx, PrintSafepointStatisticsTimeout, -1, \ | |
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2539 "Print safepoint statistics only when safepoint takes " \ |
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2540 "more than PrintSafepointSatisticsTimeout in millis") \ |
0 | 2541 \ |
1321
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2542 product(bool, TraceSafepointCleanupTime, false, \ |
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2543 "Print the break down of clean up tasks performed during " \ |
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2544 "safepoint") \ |
1321
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2545 \ |
0 | 2546 product(bool, Inline, true, \ |
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2547 "Enable inlining") \ |
0 | 2548 \ |
2549 product(bool, ClipInlining, true, \ | |
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2550 "Clip inlining if aggregate method exceeds DesiredMethodLimit") \ |
0 | 2551 \ |
2552 develop(bool, UseCHA, true, \ | |
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2553 "Enable CHA") \ |
0 | 2554 \ |
2555 product(bool, UseTypeProfile, true, \ | |
2556 "Check interpreter profile for historically monomorphic calls") \ | |
2557 \ | |
2558 notproduct(bool, TimeCompiler, false, \ | |
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2559 "Time the compiler") \ |
0 | 2560 \ |
2561 diagnostic(bool, PrintInlining, false, \ | |
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2562 "Print inlining optimizations") \ |
0 | 2563 \ |
643
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2564 product(bool, UsePopCountInstruction, false, \ |
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|
2565 "Use population count instruction") \ |
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2566 \ |
0 | 2567 develop(bool, EagerInitialization, false, \ |
2568 "Eagerly initialize classes if possible") \ | |
2569 \ | |
2570 develop(bool, TraceMethodReplacement, false, \ | |
2571 "Print when methods are replaced do to recompilation") \ | |
2572 \ | |
2573 develop(bool, PrintMethodFlushing, false, \ | |
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2574 "Print the nmethods being flushed") \ |
0 | 2575 \ |
14199
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2576 diagnostic(bool, PrintMethodFlushingStatistics, false, \ |
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|
2577 "print statistics about method flushing") \ |
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|
2578 \ |
0 | 2579 develop(bool, UseRelocIndex, false, \ |
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2580 "Use an index to speed random access to relocations") \ |
0 | 2581 \ |
2582 develop(bool, StressCodeBuffers, false, \ | |
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2583 "Exercise code buffer expansion and other rare state changes") \ |
0 | 2584 \ |
2585 diagnostic(bool, DebugNonSafepoints, trueInDebug, \ | |
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2586 "Generate extra debugging information for non-safepoints in " \ |
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|
2587 "nmethods") \ |
0 | 2588 \ |
4066 | 2589 product(bool, PrintVMOptions, false, \ |
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2590 "Print flags that appeared on the command line") \ |
0 | 2591 \ |
564 | 2592 product(bool, IgnoreUnrecognizedVMOptions, false, \ |
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2593 "Ignore unrecognized VM options") \ |
564 | 2594 \ |
1150 | 2595 product(bool, PrintCommandLineFlags, false, \ |
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2596 "Print flags specified on command line or set by ergonomics") \ |
1150 | 2597 \ |
2598 product(bool, PrintFlagsInitial, false, \ | |
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2599 "Print all VM flags before argument processing and exit VM") \ |
1150 | 2600 \ |
2601 product(bool, PrintFlagsFinal, false, \ | |
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|
2602 "Print all VM flags after argument and ergonomic processing") \ |
1150 | 2603 \ |
1768
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|
2604 notproduct(bool, PrintFlagsWithComments, false, \ |
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|
2605 "Print all VM flags with default values and descriptions and " \ |
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|
2606 "exit") \ |
1768
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|
2607 \ |
0 | 2608 diagnostic(bool, SerializeVMOutput, true, \ |
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|
2609 "Use a mutex to serialize output to tty and LogFile") \ |
0 | 2610 \ |
2611 diagnostic(bool, DisplayVMOutput, true, \ | |
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|
2612 "Display all VM output on the tty, independently of LogVMOutput") \ |
0 | 2613 \ |
12257
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|
2614 diagnostic(bool, LogVMOutput, false, \ |
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|
2615 "Save VM output to LogFile") \ |
0 | 2616 \ |
2617 diagnostic(ccstr, LogFile, NULL, \ | |
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|
2618 "If LogVMOutput or LogCompilation is on, save VM output to " \ |
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|
2619 "this file [default: ./hotspot_pid%p.log] (%p replaced with pid)")\ |
0 | 2620 \ |
2621 product(ccstr, ErrorFile, NULL, \ | |
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|
2622 "If an error occurs, save the error data to this file " \ |
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|
2623 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \ |
0 | 2624 \ |
2625 product(bool, DisplayVMOutputToStderr, false, \ | |
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|
2626 "If DisplayVMOutput is true, display all VM output to stderr") \ |
0 | 2627 \ |
2628 product(bool, DisplayVMOutputToStdout, false, \ | |
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|
2629 "If DisplayVMOutput is true, display all VM output to stdout") \ |
0 | 2630 \ |
2631 product(bool, UseHeavyMonitors, false, \ | |
2632 "use heavyweight instead of lightweight Java monitors") \ | |
2633 \ | |
6162 | 2634 product(bool, PrintStringTableStatistics, false, \ |
2635 "print statistics about the StringTable and SymbolTable") \ | |
2636 \ | |
12275
63147986a428
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|
2637 diagnostic(bool, VerifyStringTableAtExit, false, \ |
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|
2638 "verify StringTable contents at exit") \ |
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|
2639 \ |
0 | 2640 notproduct(bool, PrintSymbolTableSizeHistogram, false, \ |
2641 "print histogram of the symbol table") \ | |
2642 \ | |
2643 notproduct(bool, ExitVMOnVerifyError, false, \ | |
2644 "standard exit from VM if bytecode verify error " \ | |
2645 "(only in debug mode)") \ | |
2646 \ | |
2647 notproduct(ccstr, AbortVMOnException, NULL, \ | |
2648 "Call fatal if this exception is thrown. Example: " \ | |
2649 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \ | |
2650 \ | |
1684
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|
2651 notproduct(ccstr, AbortVMOnExceptionMessage, NULL, \ |
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|
2652 "Call fatal if the exception pointed by AbortVMOnException " \ |
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|
2653 "has this message") \ |
1684
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|
2654 \ |
0 | 2655 develop(bool, DebugVtables, false, \ |
2656 "add debugging code to vtable dispatch") \ | |
2657 \ | |
2658 develop(bool, PrintVtables, false, \ | |
2659 "print vtables when printing klass") \ | |
2660 \ | |
2661 notproduct(bool, PrintVtableStats, false, \ | |
2662 "print vtables stats at end of run") \ | |
2663 \ | |
2664 develop(bool, TraceCreateZombies, false, \ | |
2665 "trace creation of zombie nmethods") \ | |
2666 \ | |
2667 notproduct(bool, IgnoreLockingAssertions, false, \ | |
2668 "disable locking assertions (for speed)") \ | |
2669 \ | |
2670 product(bool, RangeCheckElimination, true, \ | |
8860 | 2671 "Eliminate range checks") \ |
0 | 2672 \ |
2673 develop_pd(bool, UncommonNullCast, \ | |
2674 "track occurrences of null in casts; adjust compiler tactics") \ | |
2675 \ | |
2676 develop(bool, TypeProfileCasts, true, \ | |
2677 "treat casts like calls for purposes of type profiling") \ | |
2678 \ | |
2679 develop(bool, DelayCompilationDuringStartup, true, \ | |
2680 "Delay invoking the compiler until main application class is " \ | |
2681 "loaded") \ | |
2682 \ | |
2683 develop(bool, CompileTheWorld, false, \ | |
2684 "Compile all methods in all classes in bootstrap class path " \ | |
2685 "(stress test)") \ | |
2686 \ | |
2687 develop(bool, CompileTheWorldPreloadClasses, true, \ | |
2688 "Preload all classes used by a class before start loading") \ | |
2689 \ | |
1188
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|
2690 notproduct(intx, CompileTheWorldSafepointInterval, 100, \ |
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|
2691 "Force a safepoint every n compiles so sweeper can keep up") \ |
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|
2692 \ |
0 | 2693 develop(bool, FillDelaySlots, true, \ |
2694 "Fill delay slots (on SPARC only)") \ | |
2695 \ | |
2696 develop(bool, TimeLivenessAnalysis, false, \ | |
2697 "Time computation of bytecode liveness analysis") \ | |
2698 \ | |
2699 develop(bool, TraceLivenessGen, false, \ | |
2700 "Trace the generation of liveness analysis information") \ | |
2701 \ | |
2702 notproduct(bool, TraceLivenessQuery, false, \ | |
2703 "Trace queries of liveness analysis information") \ | |
2704 \ | |
2705 notproduct(bool, CollectIndexSetStatistics, false, \ | |
2706 "Collect information about IndexSets") \ | |
2707 \ | |
2708 develop(bool, UseLoopSafepoints, true, \ | |
2709 "Generate Safepoint nodes in every loop") \ | |
2710 \ | |
2711 develop(intx, FastAllocateSizeLimit, 128*K, \ | |
2712 /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \ | |
2713 "Inline allocations larger than this in doublewords must go slow")\ | |
2714 \ | |
2715 product(bool, AggressiveOpts, false, \ | |
2716 "Enable aggressive optimizations - see arguments.cpp") \ | |
2717 \ | |
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|
2718 product_pd(uintx, TypeProfileLevel, \ |
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|
2719 "=XYZ, with Z: Type profiling of arguments at call; " \ |
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|
2720 "Y: Type profiling of return value at call; " \ |
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|
2721 "X: Type profiling of parameters to methods; " \ |
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|
2722 "X, Y and Z in 0=off ; 1=jsr292 only; 2=all methods") \ |
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|
2723 \ |
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|
2724 product(intx, TypeProfileArgsLimit, 2, \ |
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|
2725 "max number of call arguments to consider for type profiling") \ |
d13d7aba8c12
8023657: New type profiling points: arguments to call
roland
parents:
12326
diff
changeset
|
2726 \ |
12962
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12908
diff
changeset
|
2727 product(intx, TypeProfileParmsLimit, 2, \ |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12908
diff
changeset
|
2728 "max number of incoming parameters to consider for type profiling"\ |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12908
diff
changeset
|
2729 ", -1 for all") \ |
5ccbab1c69f3
8026251: New type profiling points: parameters to methods
roland
parents:
12908
diff
changeset
|
2730 \ |
0 | 2731 /* statistics */ \ |
2732 develop(bool, CountCompiledCalls, false, \ | |
12836
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tamao
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12287
diff
changeset
|
2733 "Count method invocations") \ |
0 | 2734 \ |
2735 notproduct(bool, CountRuntimeCalls, false, \ | |
12836
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tamao
parents:
12287
diff
changeset
|
2736 "Count VM runtime calls") \ |
0 | 2737 \ |
2738 develop(bool, CountJNICalls, false, \ | |
12836
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tamao
parents:
12287
diff
changeset
|
2739 "Count jni method invocations") \ |
0 | 2740 \ |
2741 notproduct(bool, CountJVMCalls, false, \ | |
12836
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tamao
parents:
12287
diff
changeset
|
2742 "Count jvm method invocations") \ |
0 | 2743 \ |
2744 notproduct(bool, CountRemovableExceptions, false, \ | |
12836
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tamao
parents:
12287
diff
changeset
|
2745 "Count exceptions that could be replaced by branches due to " \ |
0 | 2746 "inlining") \ |
2747 \ | |
2748 notproduct(bool, ICMissHistogram, false, \ | |
12836
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tamao
parents:
12287
diff
changeset
|
2749 "Produce histogram of IC misses") \ |
0 | 2750 \ |
2751 notproduct(bool, PrintClassStatistics, false, \ | |
12836
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tamao
parents:
12287
diff
changeset
|
2752 "Print class statistics at end of run") \ |
0 | 2753 \ |
2754 notproduct(bool, PrintMethodStatistics, false, \ | |
12836
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tamao
parents:
12287
diff
changeset
|
2755 "Print method statistics at end of run") \ |
0 | 2756 \ |
2757 /* interpreter */ \ | |
2758 develop(bool, ClearInterpreterLocals, false, \ | |
2759 "Always clear local variables of interpreter activations upon " \ | |
2760 "entry") \ | |
2761 \ | |
2762 product_pd(bool, RewriteBytecodes, \ | |
2763 "Allow rewriting of bytecodes (bytecodes are not immutable)") \ | |
2764 \ | |
2765 product_pd(bool, RewriteFrequentPairs, \ | |
2766 "Rewrite frequently used bytecode pairs into a single bytecode") \ | |
2767 \ | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
76
diff
changeset
|
2768 diagnostic(bool, PrintInterpreter, false, \ |
12836
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tamao
parents:
12287
diff
changeset
|
2769 "Print the generated interpreter code") \ |
0 | 2770 \ |
2771 product(bool, UseInterpreter, true, \ | |
2772 "Use interpreter for non-compiled methods") \ | |
2773 \ | |
2774 develop(bool, UseFastSignatureHandlers, true, \ | |
2775 "Use fast signature handlers for native calls") \ | |
2776 \ | |
2777 product(bool, UseLoopCounter, true, \ | |
2778 "Increment invocation counter on backward branch") \ | |
2779 \ | |
2780 product(bool, UseFastEmptyMethods, true, \ | |
2781 "Use fast method entry code for empty methods") \ | |
2782 \ | |
2783 product(bool, UseFastAccessorMethods, true, \ | |
2784 "Use fast method entry code for accessor methods") \ | |
2785 \ | |
2786 product_pd(bool, UseOnStackReplacement, \ | |
12836
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12287
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|
2787 "Use on stack replacement, calls runtime if invoc. counter " \ |
b4d8a3d4db73
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tamao
parents:
12287
diff
changeset
|
2788 "overflows in loop") \ |
0 | 2789 \ |
2790 notproduct(bool, TraceOnStackReplacement, false, \ | |
2791 "Trace on stack replacement") \ | |
2792 \ | |
2793 product_pd(bool, PreferInterpreterNativeStubs, \ | |
2794 "Use always interpreter stubs for native methods invoked via " \ | |
2795 "interpreter") \ | |
2796 \ | |
2797 develop(bool, CountBytecodes, false, \ | |
2798 "Count number of bytecodes executed") \ | |
2799 \ | |
2800 develop(bool, PrintBytecodeHistogram, false, \ | |
2801 "Print histogram of the executed bytecodes") \ | |
2802 \ | |
2803 develop(bool, PrintBytecodePairHistogram, false, \ | |
2804 "Print histogram of the executed bytecode pairs") \ | |
2805 \ | |
100
c7c777385a15
6667042: PrintAssembly option does not work without special plugin
jrose
parents:
76
diff
changeset
|
2806 diagnostic(bool, PrintSignatureHandlers, false, \ |
0 | 2807 "Print code generated for native method signature handlers") \ |
2808 \ | |
2809 develop(bool, VerifyOops, false, \ | |
2810 "Do plausibility checks for oops") \ | |
2811 \ | |
2812 develop(bool, CheckUnhandledOops, false, \ | |
2813 "Check for unhandled oops in VM code") \ | |
2814 \ | |
2815 develop(bool, VerifyJNIFields, trueInDebug, \ | |
2816 "Verify jfieldIDs for instance fields") \ | |
2817 \ | |
2818 notproduct(bool, VerifyJNIEnvThread, false, \ | |
2819 "Verify JNIEnv.thread == Thread::current() when entering VM " \ | |
2820 "from JNI") \ | |
2821 \ | |
2822 develop(bool, VerifyFPU, false, \ | |
2823 "Verify FPU state (check for NaN's, etc.)") \ | |
2824 \ | |
2825 develop(bool, VerifyThread, false, \ | |
2826 "Watch the thread register for corruption (SPARC only)") \ | |
2827 \ | |
2828 develop(bool, VerifyActivationFrameSize, false, \ | |
2829 "Verify that activation frame didn't become smaller than its " \ | |
2830 "minimal size") \ | |
2831 \ | |
2832 develop(bool, TraceFrequencyInlining, false, \ | |
2833 "Trace frequency based inlining") \ | |
2834 \ | |
2835 develop_pd(bool, InlineIntrinsics, \ | |
12836
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tamao
parents:
12287
diff
changeset
|
2836 "Inline intrinsics that can be statically resolved") \ |
0 | 2837 \ |
2838 product_pd(bool, ProfileInterpreter, \ | |
12836
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tamao
parents:
12287
diff
changeset
|
2839 "Profile at the bytecode level during interpretation") \ |
0 | 2840 \ |
14420
abe03600372a
8024468: PPC64 (part 201): cppInterpreter: implement bytecode profiling
goetz
parents:
14412
diff
changeset
|
2841 develop(bool, TraceProfileInterpreter, false, \ |
abe03600372a
8024468: PPC64 (part 201): cppInterpreter: implement bytecode profiling
goetz
parents:
14412
diff
changeset
|
2842 "Trace profiling at the bytecode level during interpretation. " \ |
abe03600372a
8024468: PPC64 (part 201): cppInterpreter: implement bytecode profiling
goetz
parents:
14412
diff
changeset
|
2843 "This outputs the profiling information collected to improve " \ |
abe03600372a
8024468: PPC64 (part 201): cppInterpreter: implement bytecode profiling
goetz
parents:
14412
diff
changeset
|
2844 "jit compilation.") \ |
abe03600372a
8024468: PPC64 (part 201): cppInterpreter: implement bytecode profiling
goetz
parents:
14412
diff
changeset
|
2845 \ |
0 | 2846 develop_pd(bool, ProfileTraps, \ |
2847 "Profile deoptimization traps at the bytecode level") \ | |
2848 \ | |
2849 product(intx, ProfileMaturityPercentage, 20, \ | |
2850 "number of method invocations/branches (expressed as % of " \ | |
2851 "CompileThreshold) before using the method's profile") \ | |
2852 \ | |
2853 develop(bool, PrintMethodData, false, \ | |
12836
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tamao
parents:
12287
diff
changeset
|
2854 "Print the results of +ProfileInterpreter at end of run") \ |
0 | 2855 \ |
2856 develop(bool, VerifyDataPointer, trueInDebug, \ | |
2857 "Verify the method data pointer during interpreter profiling") \ | |
2858 \ | |
2859 develop(bool, VerifyCompiledCode, false, \ | |
2860 "Include miscellaneous runtime verifications in nmethod code; " \ | |
1064 | 2861 "default off because it disturbs nmethod size heuristics") \ |
0 | 2862 \ |
1119
547f81740344
6361589: Print out stack trace for target thread of GC crash
minqi
parents:
1064
diff
changeset
|
2863 notproduct(bool, CrashGCForDumpingJavaThread, false, \ |
547f81740344
6361589: Print out stack trace for target thread of GC crash
minqi
parents:
1064
diff
changeset
|
2864 "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
|
2865 "Test only") \ |
0 | 2866 \ |
2867 /* compilation */ \ | |
2868 product(bool, UseCompiler, true, \ | |
12836
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tamao
parents:
12287
diff
changeset
|
2869 "Use Just-In-Time compilation") \ |
0 | 2870 \ |
2871 develop(bool, TraceCompilationPolicy, false, \ | |
2872 "Trace compilation policy") \ | |
2873 \ | |
2874 develop(bool, TimeCompilationPolicy, false, \ | |
2875 "Time the compilation policy") \ | |
2876 \ | |
2877 product(bool, UseCounterDecay, true, \ | |
12836
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tamao
parents:
12287
diff
changeset
|
2878 "Adjust recompilation counters") \ |
0 | 2879 \ |
2880 develop(intx, CounterHalfLifeTime, 30, \ | |
12836
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tamao
parents:
12287
diff
changeset
|
2881 "Half-life time of invocation counters (in seconds)") \ |
0 | 2882 \ |
2883 develop(intx, CounterDecayMinIntervalLength, 500, \ | |
12836
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tamao
parents:
12287
diff
changeset
|
2884 "The minimum interval (in milliseconds) between invocation of " \ |
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
2885 "CounterDecay") \ |
0 | 2886 \ |
2887 product(bool, AlwaysCompileLoopMethods, false, \ | |
12836
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8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
2888 "When using recompilation, never interpret methods " \ |
0 | 2889 "containing loops") \ |
2890 \ | |
2891 product(bool, DontCompileHugeMethods, true, \ | |
12836
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
2892 "Do not compile methods > HugeMethodLimit") \ |
0 | 2893 \ |
2894 /* Bytecode escape analysis estimation. */ \ | |
2895 product(bool, EstimateArgEscape, true, \ | |
2896 "Analyze bytecodes to estimate escape state of arguments") \ | |
2897 \ | |
2898 product(intx, BCEATraceLevel, 0, \ | |
2899 "How much tracing to do of bytecode escape analysis estimates") \ | |
2900 \ | |
2901 product(intx, MaxBCEAEstimateLevel, 5, \ | |
12836
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tamao
parents:
12287
diff
changeset
|
2902 "Maximum number of nested calls that are analyzed by BC EA") \ |
0 | 2903 \ |
2904 product(intx, MaxBCEAEstimateSize, 150, \ | |
12836
b4d8a3d4db73
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tamao
parents:
12287
diff
changeset
|
2905 "Maximum bytecode size of a method to be analyzed by BC EA") \ |
0 | 2906 \ |
2907 product(intx, AllocatePrefetchStyle, 1, \ | |
2908 "0 = no prefetch, " \ | |
2909 "1 = prefetch instructions for each allocation, " \ | |
1367
9e321dcfa5b7
6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents:
1366
diff
changeset
|
2910 "2 = use TLAB watermark to gate allocation prefetch, " \ |
9e321dcfa5b7
6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents:
1366
diff
changeset
|
2911 "3 = use BIS instruction on Sparc for allocation prefetch") \ |
0 | 2912 \ |
2913 product(intx, AllocatePrefetchDistance, -1, \ | |
2914 "Distance to prefetch ahead of allocation pointer") \ | |
2915 \ | |
3854 | 2916 product(intx, AllocatePrefetchLines, 3, \ |
2917 "Number of lines to prefetch ahead of array allocation pointer") \ | |
2918 \ | |
2919 product(intx, AllocateInstancePrefetchLines, 1, \ | |
12836
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8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
2920 "Number of lines to prefetch ahead of instance allocation " \ |
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
2921 "pointer") \ |
0 | 2922 \ |
2923 product(intx, AllocatePrefetchStepSize, 16, \ | |
2924 "Step size in bytes of sequential prefetch instructions") \ | |
2925 \ | |
2926 product(intx, AllocatePrefetchInstr, 0, \ | |
2927 "Prefetch instruction to prefetch ahead of allocation pointer") \ | |
2928 \ | |
2929 /* 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
|
2930 product(bool, TraceDeoptimization, false, \ |
0 | 2931 "Trace deoptimization") \ |
2932 \ | |
4668
3dbcd1013cc8
added flag PrintDeoptimizationDetails
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4561
diff
changeset
|
2933 product(bool, PrintDeoptimizationDetails, false, \ |
3dbcd1013cc8
added flag PrintDeoptimizationDetails
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4561
diff
changeset
|
2934 "Print more information about deoptimization") \ |
3dbcd1013cc8
added flag PrintDeoptimizationDetails
Christian Haeubl <christian.haeubl@oracle.com>
parents:
4561
diff
changeset
|
2935 \ |
0 | 2936 develop(bool, DebugDeoptimization, false, \ |
2937 "Tracing various information while debugging deoptimization") \ | |
2938 \ | |
2939 product(intx, SelfDestructTimer, 0, \ | |
2940 "Will cause VM to terminate after a given time (in minutes) " \ | |
2941 "(0 means off)") \ | |
2942 \ | |
2943 product(intx, MaxJavaStackTraceDepth, 1024, \ | |
12836
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8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
2944 "The maximum number of lines in the stack trace for Java " \ |
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
2945 "exceptions (0 means all)") \ |
0 | 2946 \ |
3328
277d0f6ca64d
7005503: Make GuaranteedSafepointInterval a diagnostic flag
kevinw
parents:
3255
diff
changeset
|
2947 NOT_EMBEDDED(diagnostic(intx, GuaranteedSafepointInterval, 1000, \ |
0 | 2948 "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
|
2949 "(0 means none)")) \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
2950 \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
2951 EMBEDDED_ONLY(product(intx, GuaranteedSafepointInterval, 0, \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
2952 "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
|
2953 "(0 means none)")) \ |
0 | 2954 \ |
2955 product(intx, SafepointTimeoutDelay, 10000, \ | |
2956 "Delay in milliseconds for option SafepointTimeout") \ | |
2957 \ | |
6818 | 2958 product(intx, NmethodSweepFraction, 16, \ |
0 | 2959 "Number of invocations of sweeper to cover all nmethods") \ |
2960 \ | |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1513
diff
changeset
|
2961 product(intx, NmethodSweepCheckInterval, 5, \ |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1513
diff
changeset
|
2962 "Compilers wake up every n seconds to possibly sweep nmethods") \ |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1513
diff
changeset
|
2963 \ |
12324
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12322
diff
changeset
|
2964 product(intx, NmethodSweepActivity, 10, \ |
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12322
diff
changeset
|
2965 "Removes cold nmethods from code cache if > 0. Higher values " \ |
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12322
diff
changeset
|
2966 "result in more aggressive sweeping") \ |
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12322
diff
changeset
|
2967 \ |
3384
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
2968 notproduct(bool, LogSweeper, false, \ |
12836
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
2969 "Keep a ring buffer of sweeper activity") \ |
3384
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
2970 \ |
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
2971 notproduct(intx, SweeperLogEntries, 1024, \ |
12836
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tamao
parents:
12287
diff
changeset
|
2972 "Number of records in the ring buffer of sweeper activity") \ |
3384
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
2973 \ |
0 | 2974 notproduct(intx, MemProfilingInterval, 500, \ |
2975 "Time between each invocation of the MemProfiler") \ | |
2976 \ | |
2977 develop(intx, MallocCatchPtr, -1, \ | |
2978 "Hit breakpoint when mallocing/freeing this pointer") \ | |
2979 \ | |
2980 notproduct(intx, AssertRepeat, 1, \ | |
2981 "number of times to evaluate expression in assert " \ | |
2982 "(to estimate overhead); only works with -DUSE_REPEATED_ASSERTS") \ | |
2983 \ | |
2984 notproduct(ccstrlist, SuppressErrorAt, "", \ | |
2985 "List of assertions (file:line) to muzzle") \ | |
2986 \ | |
2987 notproduct(uintx, HandleAllocationLimit, 1024, \ | |
2988 "Threshold for HandleMark allocation when +TraceHandleAllocation "\ | |
2989 "is used") \ | |
2990 \ | |
2991 develop(uintx, TotalHandleAllocationLimit, 1024, \ | |
2992 "Threshold for total handle allocation when " \ | |
2993 "+TraceHandleAllocation is used") \ | |
2994 \ | |
2995 develop(intx, StackPrintLimit, 100, \ | |
2996 "number of stack frames to print in VM-level stack dump") \ | |
2997 \ | |
2998 notproduct(intx, MaxElementPrintSize, 256, \ | |
2999 "maximum number of elements to print") \ | |
3000 \ | |
3001 notproduct(intx, MaxSubklassPrintSize, 4, \ | |
3002 "maximum number of subklasses to print when printing klass") \ | |
3003 \ | |
1157
c3b315a0d58a
6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents:
1150
diff
changeset
|
3004 product(intx, MaxInlineLevel, 9, \ |
0 | 3005 "maximum number of nested calls that are inlined") \ |
3006 \ | |
1157
c3b315a0d58a
6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents:
1150
diff
changeset
|
3007 product(intx, MaxRecursiveInlineLevel, 1, \ |
0 | 3008 "maximum number of nested recursive calls that are inlined") \ |
3009 \ | |
13081
e74074c34312
8028159: C2: compiler stack overflow during inlining of @ForceInline methods
vlivanov
parents:
13074
diff
changeset
|
3010 develop(intx, MaxForceInlineLevel, 100, \ |
14664
1179450ad3ee
8035887: VM crashes trying to force inlining the recursive call
vlivanov
parents:
14663
diff
changeset
|
3011 "maximum number of nested calls that are forced for inlining " \ |
1179450ad3ee
8035887: VM crashes trying to force inlining the recursive call
vlivanov
parents:
14663
diff
changeset
|
3012 "(using CompilerOracle or marked w/ @ForceInline)") \ |
13081
e74074c34312
8028159: C2: compiler stack overflow during inlining of @ForceInline methods
vlivanov
parents:
13074
diff
changeset
|
3013 \ |
675 | 3014 product_pd(intx, InlineSmallCode, \ |
0 | 3015 "Only inline already compiled methods if their code size is " \ |
3016 "less than this") \ | |
3017 \ | |
3018 product(intx, MaxInlineSize, 35, \ | |
12836
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tamao
parents:
12287
diff
changeset
|
3019 "The maximum bytecode size of a method to be inlined") \ |
0 | 3020 \ |
3021 product_pd(intx, FreqInlineSize, \ | |
12836
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tamao
parents:
12287
diff
changeset
|
3022 "The maximum bytecode size of a frequent method to be inlined") \ |
0 | 3023 \ |
1157
c3b315a0d58a
6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents:
1150
diff
changeset
|
3024 product(intx, MaxTrivialSize, 6, \ |
12836
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8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3025 "The maximum bytecode size of a trivial method to be inlined") \ |
0 | 3026 \ |
1157
c3b315a0d58a
6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents:
1150
diff
changeset
|
3027 product(intx, MinInliningThreshold, 250, \ |
12836
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3028 "The minimum invocation count a method needs to have to be " \ |
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3029 "inlined") \ |
0 | 3030 \ |
3031 develop(intx, MethodHistogramCutoff, 100, \ | |
12836
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3032 "The cutoff value for method invocation histogram (+CountCalls)") \ |
0 | 3033 \ |
3034 develop(intx, ProfilerNumberOfInterpretedMethods, 25, \ | |
12836
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3035 "Number of interpreted methods to show in profile") \ |
0 | 3036 \ |
3037 develop(intx, ProfilerNumberOfCompiledMethods, 25, \ | |
12836
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3038 "Number of compiled methods to show in profile") \ |
0 | 3039 \ |
3040 develop(intx, ProfilerNumberOfStubMethods, 25, \ | |
12836
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3041 "Number of stub methods to show in profile") \ |
0 | 3042 \ |
3043 develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \ | |
12836
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3044 "Number of runtime stub nodes to show in profile") \ |
0 | 3045 \ |
3046 product(intx, ProfileIntervalsTicks, 100, \ | |
12836
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3047 "Number of ticks between printing of interval profile " \ |
0 | 3048 "(+ProfileIntervals)") \ |
3049 \ | |
3050 notproduct(intx, ScavengeALotInterval, 1, \ | |
3051 "Interval between which scavenge will occur with +ScavengeALot") \ | |
3052 \ | |
3053 notproduct(intx, FullGCALotInterval, 1, \ | |
3054 "Interval between which full gc will occur with +FullGCALot") \ | |
3055 \ | |
3056 notproduct(intx, FullGCALotStart, 0, \ | |
3057 "For which invocation to start FullGCAlot") \ | |
3058 \ | |
3059 notproduct(intx, FullGCALotDummies, 32*K, \ | |
3060 "Dummy object allocated with +FullGCALot, forcing all objects " \ | |
3061 "to move") \ | |
3062 \ | |
3063 develop(intx, DontYieldALotInterval, 10, \ | |
3064 "Interval between which yields will be dropped (milliseconds)") \ | |
3065 \ | |
3066 develop(intx, MinSleepInterval, 1, \ | |
3067 "Minimum sleep() interval (milliseconds) when " \ | |
12836
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8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3068 "ConvertSleepToYield is off (used for Solaris)") \ |
0 | 3069 \ |
3070 develop(intx, ProfilerPCTickThreshold, 15, \ | |
3071 "Number of ticks in a PC buckets to be a hotspot") \ | |
3072 \ | |
3073 notproduct(intx, DeoptimizeALotInterval, 5, \ | |
3074 "Number of exits until DeoptimizeALot kicks in") \ | |
3075 \ | |
3076 notproduct(intx, ZombieALotInterval, 5, \ | |
3077 "Number of exits until ZombieALot kicks in") \ | |
3078 \ | |
3079 diagnostic(intx, MallocVerifyInterval, 0, \ | |
12836
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tamao
parents:
12287
diff
changeset
|
3080 "If non-zero, verify C heap after every N calls to " \ |
0 | 3081 "malloc/realloc/free") \ |
3082 \ | |
3083 diagnostic(intx, MallocVerifyStart, 0, \ | |
12836
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8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3084 "If non-zero, start verifying C heap after Nth call to " \ |
0 | 3085 "malloc/realloc/free") \ |
3086 \ | |
8802
eca90b8a06eb
7030610: runtime/6878713/Test6878713.sh fails Error. failed to clean up files after test
rdurbin
parents:
8706
diff
changeset
|
3087 diagnostic(uintx, MallocMaxTestWords, 0, \ |
12836
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3088 "If non-zero, maximum number of words that malloc/realloc can " \ |
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3089 "allocate (for testing only)") \ |
8802
eca90b8a06eb
7030610: runtime/6878713/Test6878713.sh fails Error. failed to clean up files after test
rdurbin
parents:
8706
diff
changeset
|
3090 \ |
6818 | 3091 product(intx, TypeProfileWidth, 2, \ |
12836
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8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3092 "Number of receiver types to record in call/cast profile") \ |
0 | 3093 \ |
9760
c76b43ed5089
Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9627
diff
changeset
|
3094 product_pd(intx, MethodProfileWidth, \ |
c76b43ed5089
Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9627
diff
changeset
|
3095 "number of methods to record in call profile") \ |
c76b43ed5089
Added infrastructure for recording invoked methods in the profiling information.
Christian Haeubl <haeubl@ssw.jku.at>
parents:
9627
diff
changeset
|
3096 \ |
0 | 3097 develop(intx, BciProfileWidth, 2, \ |
12836
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8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3098 "Number of return bci's to record in ret profile") \ |
0 | 3099 \ |
3100 product(intx, PerMethodRecompilationCutoff, 400, \ | |
3101 "After recompiling N times, stay in the interpreter (-1=>'Inf')") \ | |
3102 \ | |
1206
87684f1a88b5
6614597: Performance variability in jvm2008 xml.validation
kvn
parents:
1202
diff
changeset
|
3103 product(intx, PerBytecodeRecompilationCutoff, 200, \ |
0 | 3104 "Per-BCI limit on repeated recompilation (-1=>'Inf')") \ |
3105 \ | |
3106 product(intx, PerMethodTrapLimit, 100, \ | |
3107 "Limit on traps (of one kind) in a method (includes inlines)") \ | |
3108 \ | |
14500
fdad2932c73f
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
14460
diff
changeset
|
3109 experimental(intx, PerMethodSpecTrapLimit, 5000, \ |
fdad2932c73f
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
14460
diff
changeset
|
3110 "Limit on speculative traps (of one kind) in a method (includes inlines)") \ |
fdad2932c73f
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
14460
diff
changeset
|
3111 \ |
0 | 3112 product(intx, PerBytecodeTrapLimit, 4, \ |
3113 "Limit on traps (of one kind) at a particular BCI") \ | |
3114 \ | |
14500
fdad2932c73f
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
14460
diff
changeset
|
3115 experimental(intx, SpecTrapLimitExtraEntries, 3, \ |
fdad2932c73f
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
14460
diff
changeset
|
3116 "Extra method data trap entries for speculation") \ |
fdad2932c73f
8031752: Failed speculative optimizations should be reattempted when root of compilation is different
roland
parents:
14460
diff
changeset
|
3117 \ |
0 | 3118 develop(intx, InlineFrequencyRatio, 20, \ |
3119 "Ratio of call site execution to caller method invocation") \ | |
3120 \ | |
3121 develop_pd(intx, InlineFrequencyCount, \ | |
3122 "Count of call site execution necessary to trigger frequent " \ | |
3123 "inlining") \ | |
3124 \ | |
3125 develop(intx, InlineThrowCount, 50, \ | |
3126 "Force inlining of interpreted methods that throw this often") \ | |
3127 \ | |
3128 develop(intx, InlineThrowMaxSize, 200, \ | |
3129 "Force inlining of throwing methods smaller than this") \ | |
3130 \ | |
3131 develop(intx, ProfilerNodeSize, 1024, \ | |
3132 "Size in K to allocate for the Profile Nodes of each thread") \ | |
3133 \ | |
3134 product_pd(intx, PreInflateSpin, \ | |
3135 "Number of times to spin wait before inflation") \ | |
3136 \ | |
3137 /* gc parameters */ \ | |
1064 | 3138 product(uintx, InitialHeapSize, 0, \ |
10241
d17700c82d7d
8006088: Incompatible heap size flags accepted by VM
tschatzl
parents:
10208
diff
changeset
|
3139 "Initial heap size (in bytes); zero means use ergonomics") \ |
1064 | 3140 \ |
3141 product(uintx, MaxHeapSize, ScaleForWordSize(96*M), \ | |
3142 "Maximum heap size (in bytes)") \ | |
3143 \ | |
3144 product(uintx, OldSize, ScaleForWordSize(4*M), \ | |
3145 "Initial tenured generation size (in bytes)") \ | |
3146 \ | |
1287
8911d8c0596f
6923123: Hotspot refuses to start when -Xmx4m or -Xms4m is specified
phh
parents:
1211
diff
changeset
|
3147 product(uintx, NewSize, ScaleForWordSize(1*M), \ |
1064 | 3148 "Initial new generation size (in bytes)") \ |
0 | 3149 \ |
3150 product(uintx, MaxNewSize, max_uintx, \ | |
1064 | 3151 "Maximum new generation size (in bytes), max_uintx means set " \ |
3152 "ergonomically") \ | |
0 | 3153 \ |
3154 product(uintx, PretenureSizeThreshold, 0, \ | |
1064 | 3155 "Maximum size in bytes of objects allocated in DefNew " \ |
3156 "generation; zero means no maximum") \ | |
3157 \ | |
3158 product(uintx, TLABSize, 0, \ | |
3159 "Starting TLAB size (in bytes); zero means set ergonomically") \ | |
0 | 3160 \ |
3161 product(uintx, MinTLABSize, 2*K, \ | |
3162 "Minimum allowed TLAB size (in bytes)") \ | |
3163 \ | |
3164 product(uintx, TLABAllocationWeight, 35, \ | |
3165 "Allocation averaging weight") \ | |
3166 \ | |
3167 product(uintx, TLABWasteTargetPercent, 1, \ | |
3168 "Percentage of Eden that can be wasted") \ | |
3169 \ | |
3170 product(uintx, TLABRefillWasteFraction, 64, \ | |
12836
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3171 "Maximum TLAB waste at a refill (internal fragmentation)") \ |
0 | 3172 \ |
3173 product(uintx, TLABWasteIncrement, 4, \ | |
3174 "Increment allowed waste at slow allocation") \ | |
3175 \ | |
8035 | 3176 product(uintx, SurvivorRatio, 8, \ |
0 | 3177 "Ratio of eden/survivor space size") \ |
3178 \ | |
8035 | 3179 product(uintx, NewRatio, 2, \ |
12836
b4d8a3d4db73
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tamao
parents:
12287
diff
changeset
|
3180 "Ratio of old/new generation sizes") \ |
0 | 3181 \ |
3182 product_pd(uintx, NewSizeThreadIncrease, \ | |
3183 "Additional size added to desired new generation size per " \ | |
3184 "non-daemon thread (in bytes)") \ | |
3185 \ | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6633
diff
changeset
|
3186 product_pd(uintx, MetaspaceSize, \ |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6633
diff
changeset
|
3187 "Initial size of Metaspaces (in bytes)") \ |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6633
diff
changeset
|
3188 \ |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6633
diff
changeset
|
3189 product(uintx, MaxMetaspaceSize, max_uintx, \ |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6633
diff
changeset
|
3190 "Maximum size of Metaspaces (in bytes)") \ |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6633
diff
changeset
|
3191 \ |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12154
diff
changeset
|
3192 product(uintx, CompressedClassSpaceSize, 1*G, \ |
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12154
diff
changeset
|
3193 "Maximum size of class area in Metaspace when compressed " \ |
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12154
diff
changeset
|
3194 "class pointers are used") \ |
0 | 3195 \ |
14313
44315152d434
8028391: Make the Min/MaxHeapFreeRatio flags manageable
jwilhelm
parents:
14309
diff
changeset
|
3196 manageable(uintx, MinHeapFreeRatio, 40, \ |
12892
9c8289162268
8024776: Max/MinHeapFreeRatio descriptions should be more precise
jwilhelm
parents:
12838
diff
changeset
|
3197 "The minimum percentage of heap free after GC to avoid expansion."\ |
14313
44315152d434
8028391: Make the Min/MaxHeapFreeRatio flags manageable
jwilhelm
parents:
14309
diff
changeset
|
3198 " For most GCs this applies to the old generation. In G1 and" \ |
44315152d434
8028391: Make the Min/MaxHeapFreeRatio flags manageable
jwilhelm
parents:
14309
diff
changeset
|
3199 " ParallelGC it applies to the whole heap.") \ |
44315152d434
8028391: Make the Min/MaxHeapFreeRatio flags manageable
jwilhelm
parents:
14309
diff
changeset
|
3200 \ |
44315152d434
8028391: Make the Min/MaxHeapFreeRatio flags manageable
jwilhelm
parents:
14309
diff
changeset
|
3201 manageable(uintx, MaxHeapFreeRatio, 70, \ |
12892
9c8289162268
8024776: Max/MinHeapFreeRatio descriptions should be more precise
jwilhelm
parents:
12838
diff
changeset
|
3202 "The maximum percentage of heap free after GC to avoid shrinking."\ |
14313
44315152d434
8028391: Make the Min/MaxHeapFreeRatio flags manageable
jwilhelm
parents:
14309
diff
changeset
|
3203 " For most GCs this applies to the old generation. In G1 and" \ |
44315152d434
8028391: Make the Min/MaxHeapFreeRatio flags manageable
jwilhelm
parents:
14309
diff
changeset
|
3204 " ParallelGC it applies to the whole heap.") \ |
0 | 3205 \ |
3206 product(intx, SoftRefLRUPolicyMSPerMB, 1000, \ | |
3207 "Number of milliseconds per MB of free space in the heap") \ | |
3208 \ | |
3209 product(uintx, MinHeapDeltaBytes, ScaleForWordSize(128*K), \ | |
12836
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3210 "The minimum change in heap space due to GC (in bytes)") \ |
0 | 3211 \ |
6818 | 3212 product(uintx, MinMetaspaceExpansion, ScaleForWordSize(256*K), \ |
12836
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3213 "The minimum expansion of Metaspace (in bytes)") \ |
8040
a83cd101fd62
8005452: NPG: Create new flags for Metaspace resizing policy
jmasa
parents:
8035
diff
changeset
|
3214 \ |
a83cd101fd62
8005452: NPG: Create new flags for Metaspace resizing policy
jmasa
parents:
8035
diff
changeset
|
3215 product(uintx, MinMetaspaceFreeRatio, 40, \ |
12836
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3216 "The minimum percentage of Metaspace free after GC to avoid " \ |
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3217 "expansion") \ |
8040
a83cd101fd62
8005452: NPG: Create new flags for Metaspace resizing policy
jmasa
parents:
8035
diff
changeset
|
3218 \ |
a83cd101fd62
8005452: NPG: Create new flags for Metaspace resizing policy
jmasa
parents:
8035
diff
changeset
|
3219 product(uintx, MaxMetaspaceFreeRatio, 70, \ |
12836
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3220 "The maximum percentage of Metaspace free after GC to avoid " \ |
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3221 "shrinking") \ |
0 | 3222 \ |
6818 | 3223 product(uintx, MaxMetaspaceExpansion, ScaleForWordSize(4*M), \ |
12836
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3224 "The maximum expansion of Metaspace without full GC (in bytes)") \ |
0 | 3225 \ |
10287
12f651e29f6b
6843347: Boundary values in some public GC options cause crashes
tschatzl
parents:
10241
diff
changeset
|
3226 product(uintx, QueuedAllocationWarningCount, 0, \ |
0 | 3227 "Number of times an allocation that queues behind a GC " \ |
3228 "will retry before printing a warning") \ | |
3229 \ | |
3230 diagnostic(uintx, VerifyGCStartAt, 0, \ | |
3231 "GC invoke count where +VerifyBefore/AfterGC kicks in") \ | |
3232 \ | |
3233 diagnostic(intx, VerifyGCLevel, 0, \ | |
3234 "Generation level at which to start +VerifyBefore/AfterGC") \ | |
3235 \ | |
6818 | 3236 product(uintx, MaxTenuringThreshold, 15, \ |
0 | 3237 "Maximum value for tenuring threshold") \ |
3238 \ | |
6818 | 3239 product(uintx, InitialTenuringThreshold, 7, \ |
0 | 3240 "Initial value for tenuring threshold") \ |
3241 \ | |
8035 | 3242 product(uintx, TargetSurvivorRatio, 50, \ |
0 | 3243 "Desired percentage of survivor space used after scavenge") \ |
3244 \ | |
438 | 3245 product(uintx, MarkSweepDeadRatio, 5, \ |
12836
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3246 "Percentage (0-100) of the old gen allowed as dead wood. " \ |
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3247 "Serial mark sweep treats this as both the minimum and maximum " \ |
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3248 "value. " \ |
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3249 "CMS uses this value only if it falls back to mark sweep. " \ |
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3250 "Par compact uses a variable scale based on the density of the " \ |
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3251 "generation and treats this as the maximum value when the heap " \ |
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3252 "is either completely full or completely empty. Par compact " \ |
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3253 "also has a smaller default value; see arguments.cpp.") \ |
0 | 3254 \ |
10287
12f651e29f6b
6843347: Boundary values in some public GC options cause crashes
tschatzl
parents:
10241
diff
changeset
|
3255 product(uintx, MarkSweepAlwaysCompactCount, 4, \ |
0 | 3256 "How often should we fully compact the heap (ignoring the dead " \ |
3257 "space parameters)") \ | |
3258 \ | |
3259 product(intx, PrintCMSStatistics, 0, \ | |
3260 "Statistics for CMS") \ | |
3261 \ | |
3262 product(bool, PrintCMSInitiationStatistics, false, \ | |
3263 "Statistics for initiating a CMS collection") \ | |
3264 \ | |
3265 product(intx, PrintFLSStatistics, 0, \ | |
3266 "Statistics for CMS' FreeListSpace") \ | |
3267 \ | |
3268 product(intx, PrintFLSCensus, 0, \ | |
3269 "Census for CMS' FreeListSpace") \ | |
3270 \ | |
3271 develop(uintx, GCExpandToAllocateDelayMillis, 0, \ | |
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|
3272 "Delay between expansion and allocation (in milliseconds)") \ |
0 | 3273 \ |
6817 | 3274 develop(uintx, GCWorkerDelayMillis, 0, \ |
12836
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|
3275 "Delay in scheduling GC workers (in milliseconds)") \ |
6817 | 3276 \ |
0 | 3277 product(intx, DeferThrSuspendLoopCount, 4000, \ |
3278 "(Unstable) Number of times to iterate in safepoint loop " \ | |
12836
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|
3279 "before blocking VM threads ") \ |
0 | 3280 \ |
3281 product(intx, DeferPollingPageLoopCount, -1, \ | |
3282 "(Unsafe,Unstable) Number of iterations in safepoint loop " \ | |
3283 "before changing safepoint polling page to RO ") \ | |
3284 \ | |
12836
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|
3285 product(intx, SafepointSpinBeforeYield, 2000, "(Unstable)") \ |
0 | 3286 \ |
3287 product(bool, PSChunkLargeArrays, true, \ | |
12836
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|
3288 "Process large arrays in chunks") \ |
0 | 3289 \ |
3290 product(uintx, GCDrainStackTargetSize, 64, \ | |
12836
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|
3291 "Number of entries we will try to leave on the stack " \ |
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changeset
|
3292 "during parallel gc") \ |
0 | 3293 \ |
3294 /* stack parameters */ \ | |
3295 product_pd(intx, StackYellowPages, \ | |
3296 "Number of yellow zone (recoverable overflows) pages") \ | |
3297 \ | |
3298 product_pd(intx, StackRedPages, \ | |
3299 "Number of red zone (unrecoverable overflows) pages") \ | |
3300 \ | |
3301 product_pd(intx, StackShadowPages, \ | |
12836
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|
3302 "Number of shadow zone (for overflow checking) pages " \ |
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|
3303 "this should exceed the depth of the VM and native call stack") \ |
0 | 3304 \ |
3305 product_pd(intx, ThreadStackSize, \ | |
3306 "Thread Stack Size (in Kbytes)") \ | |
3307 \ | |
3308 product_pd(intx, VMThreadStackSize, \ | |
3309 "Non-Java Thread Stack Size (in Kbytes)") \ | |
3310 \ | |
3311 product_pd(intx, CompilerThreadStackSize, \ | |
3312 "Compiler Thread Stack Size (in Kbytes)") \ | |
3313 \ | |
3314 develop_pd(uintx, JVMInvokeMethodSlack, \ | |
3315 "Stack space (bytes) required for JVM_InvokeMethod to complete") \ | |
3316 \ | |
3317 product(uintx, ThreadSafetyMargin, 50*M, \ | |
3318 "Thread safety margin is used on fixed-stack LinuxThreads (on " \ | |
3319 "Linux/x86 only) to prevent heap-stack collision. Set to 0 to " \ | |
3320 "disable this feature") \ | |
3321 \ | |
3322 /* code cache parameters */ \ | |
14687
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|
3323 /* ppc64/tiered compilation has large code-entry alignment. */ \ |
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|
3324 develop(uintx, CodeCacheSegmentSize, 64 PPC64_ONLY(+64) NOT_PPC64(TIERED_ONLY(+64)),\ |
0 | 3325 "Code cache segment size (in bytes) - smallest unit of " \ |
3326 "allocation") \ | |
3327 \ | |
3328 develop_pd(intx, CodeEntryAlignment, \ | |
3329 "Code entry alignment for generated code (in bytes)") \ | |
3330 \ | |
1365 | 3331 product_pd(intx, OptoLoopAlignment, \ |
3332 "Align inner loops to zero relative to this modulus") \ | |
3333 \ | |
0 | 3334 product_pd(uintx, InitialCodeCacheSize, \ |
3335 "Initial code cache size (in bytes)") \ | |
3336 \ | |
11079
738e04fb1232
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|
3337 develop_pd(uintx, CodeCacheMinimumUseSpace, \ |
738e04fb1232
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|
3338 "Minimum code cache size (in bytes) required to start VM.") \ |
738e04fb1232
8014972: Crash with specific values for -XX:InitialCodeCacheSize=500K -XX:ReservedCodeCacheSize=500k
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changeset
|
3339 \ |
0 | 3340 product_pd(uintx, ReservedCodeCacheSize, \ |
3341 "Reserved code cache size (in bytes) - maximum code cache size") \ | |
3342 \ | |
3343 product(uintx, CodeCacheMinimumFreeSpace, 500*K, \ | |
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|
3344 "When less than X space left, we stop compiling") \ |
0 | 3345 \ |
3346 product_pd(uintx, CodeCacheExpansionSize, \ | |
3347 "Code cache expansion size (in bytes)") \ | |
3348 \ | |
3349 develop_pd(uintx, CodeCacheMinBlockLength, \ | |
12836
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|
3350 "Minimum number of segments in a code cache block") \ |
0 | 3351 \ |
3352 notproduct(bool, ExitOnFullCodeCache, false, \ | |
12836
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|
3353 "Exit the VM if we fill the code cache") \ |
0 | 3354 \ |
4039 | 3355 product(bool, UseCodeCacheFlushing, true, \ |
13074
78da3894b86f
8027593: performance drop with constrained codecache starting with hs25 b111
anoll
parents:
13071
diff
changeset
|
3356 "Remove cold/old nmethods from the code cache") \ |
1202 | 3357 \ |
0 | 3358 /* interpreter debugging */ \ |
3359 develop(intx, BinarySwitchThreshold, 5, \ | |
3360 "Minimal number of lookupswitch entries for rewriting to binary " \ | |
3361 "switch") \ | |
3362 \ | |
3363 develop(intx, StopInterpreterAt, 0, \ | |
12836
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|
3364 "Stop interpreter execution at specified bytecode number") \ |
0 | 3365 \ |
3366 develop(intx, TraceBytecodesAt, 0, \ | |
12836
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|
3367 "Trace bytecodes starting with specified bytecode number") \ |
0 | 3368 \ |
3369 /* compiler interface */ \ | |
3370 develop(intx, CIStart, 0, \ | |
12836
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|
3371 "The id of the first compilation to permit") \ |
0 | 3372 \ |
14236 | 3373 develop(intx, CIStop, max_jint, \ |
12836
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|
3374 "The id of the last compilation to permit") \ |
0 | 3375 \ |
14236 | 3376 develop(intx, CIStartOSR, 0, \ |
12836
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|
3377 "The id of the first osr compilation to permit " \ |
0 | 3378 "(CICountOSR must be on)") \ |
3379 \ | |
14236 | 3380 develop(intx, CIStopOSR, max_jint, \ |
12836
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|
3381 "The id of the last osr compilation to permit " \ |
0 | 3382 "(CICountOSR must be on)") \ |
3383 \ | |
14236 | 3384 develop(intx, CIBreakAtOSR, -1, \ |
12836
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|
3385 "The id of osr compilation to break at") \ |
0 | 3386 \ |
14236 | 3387 develop(intx, CIBreakAt, -1, \ |
12836
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|
3388 "The id of compilation to break at") \ |
0 | 3389 \ |
3390 product(ccstrlist, CompileOnly, "", \ | |
3391 "List of methods (pkg/class.name) to restrict compilation to") \ | |
3392 \ | |
3393 product(ccstr, CompileCommandFile, NULL, \ | |
3394 "Read compiler commands from this file [.hotspot_compiler]") \ | |
3395 \ | |
3396 product(ccstrlist, CompileCommand, "", \ | |
3397 "Prepend to .hotspot_compiler; e.g. log,java/lang/String.<init>") \ | |
3398 \ | |
6972
bd7a7ce2e264
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|
3399 develop(bool, ReplayCompiles, false, \ |
bd7a7ce2e264
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6935
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changeset
|
3400 "Enable replay of compilations from ReplayDataFile") \ |
bd7a7ce2e264
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minqi
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6935
diff
changeset
|
3401 \ |
10195
e12c9b3740db
8012260: ciReplay: Include PID into the name of replay data file
vlivanov
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9073
diff
changeset
|
3402 product(ccstr, ReplayDataFile, NULL, \ |
e12c9b3740db
8012260: ciReplay: Include PID into the name of replay data file
vlivanov
parents:
9073
diff
changeset
|
3403 "File containing compilation replay information" \ |
e12c9b3740db
8012260: ciReplay: Include PID into the name of replay data file
vlivanov
parents:
9073
diff
changeset
|
3404 "[default: ./replay_pid%p.log] (%p replaced with pid)") \ |
6972
bd7a7ce2e264
6830717: replay of compilations would help with debugging
minqi
parents:
6935
diff
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|
3405 \ |
14232 | 3406 product(ccstr, InlineDataFile, NULL, \ |
3407 "File containing inlining replay information" \ | |
3408 "[default: ./inline_pid%p.log] (%p replaced with pid)") \ | |
3409 \ | |
6972
bd7a7ce2e264
6830717: replay of compilations would help with debugging
minqi
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6935
diff
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|
3410 develop(intx, ReplaySuppressInitializers, 2, \ |
12836
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|
3411 "Control handling of class initialization during replay: " \ |
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|
3412 "0 - don't do anything special; " \ |
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|
3413 "1 - treat all class initializers as empty; " \ |
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|
3414 "2 - treat class initializers for application classes as empty; " \ |
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|
3415 "3 - allow all class initializers to run during bootstrap but " \ |
6972
bd7a7ce2e264
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parents:
6935
diff
changeset
|
3416 " pretend they are empty after starting replay") \ |
bd7a7ce2e264
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minqi
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6935
diff
changeset
|
3417 \ |
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6935
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changeset
|
3418 develop(bool, ReplayIgnoreInitErrors, false, \ |
bd7a7ce2e264
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parents:
6935
diff
changeset
|
3419 "Ignore exceptions thrown during initialization for replay") \ |
bd7a7ce2e264
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minqi
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6935
diff
changeset
|
3420 \ |
10195
e12c9b3740db
8012260: ciReplay: Include PID into the name of replay data file
vlivanov
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9073
diff
changeset
|
3421 product(bool, DumpReplayDataOnError, true, \ |
e12c9b3740db
8012260: ciReplay: Include PID into the name of replay data file
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9073
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|
3422 "Record replay data for crashing compiler threads") \ |
6972
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minqi
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6935
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|
3423 \ |
0 | 3424 product(bool, CICompilerCountPerCPU, false, \ |
3425 "1 compiler thread for log(N CPUs)") \ | |
3426 \ | |
3427 develop(intx, CIFireOOMAt, -1, \ | |
3428 "Fire OutOfMemoryErrors throughout CI for testing the compiler " \ | |
3429 "(non-negative value throws OOM after this many CI accesses " \ | |
3430 "in each compile)") \ | |
10197
7b23cb975cf2
8011675: adding compilation level to replay data
iignatyev
parents:
10195
diff
changeset
|
3431 notproduct(intx, CICrashAt, -1, \ |
7b23cb975cf2
8011675: adding compilation level to replay data
iignatyev
parents:
10195
diff
changeset
|
3432 "id of compilation to trigger assert in compiler thread for " \ |
7b23cb975cf2
8011675: adding compilation level to replay data
iignatyev
parents:
10195
diff
changeset
|
3433 "the purpose of testing, e.g. generation of replay data") \ |
909
b32a809aab08
6866585: debug code in ciObjectFactory too slow for large objects
jcoomes
parents:
905
diff
changeset
|
3434 notproduct(bool, CIObjectFactoryVerify, false, \ |
b32a809aab08
6866585: debug code in ciObjectFactory too slow for large objects
jcoomes
parents:
905
diff
changeset
|
3435 "enable potentially expensive verification in ciObjectFactory") \ |
b32a809aab08
6866585: debug code in ciObjectFactory too slow for large objects
jcoomes
parents:
905
diff
changeset
|
3436 \ |
0 | 3437 /* Priorities */ \ |
3438 product_pd(bool, UseThreadPriorities, "Use native thread priorities") \ | |
3439 \ | |
3440 product(intx, ThreadPriorityPolicy, 0, \ | |
3441 "0 : Normal. "\ | |
3442 " VM chooses priorities that are appropriate for normal "\ | |
3443 " applications. On Solaris NORM_PRIORITY and above are mapped "\ | |
12836
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|
3444 " to normal native priority. Java priorities below " \ |
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|
3445 " NORM_PRIORITY map to lower native priority values. On "\ |
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|
3446 " Windows applications are allowed to use higher native "\ |
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changeset
|
3447 " priorities. However, with ThreadPriorityPolicy=0, VM will "\ |
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|
3448 " not use the highest possible native priority, "\ |
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|
3449 " THREAD_PRIORITY_TIME_CRITICAL, as it may interfere with "\ |
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|
3450 " system threads. On Linux thread priorities are ignored "\ |
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|
3451 " because the OS does not support static priority in "\ |
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|
3452 " SCHED_OTHER scheduling class which is the only choice for "\ |
0 | 3453 " non-root, non-realtime applications. "\ |
3454 "1 : Aggressive. "\ | |
3455 " Java thread priorities map over to the entire range of "\ | |
3456 " native thread priorities. Higher Java thread priorities map "\ | |
3457 " to higher native thread priorities. This policy should be "\ | |
3458 " used with care, as sometimes it can cause performance "\ | |
3459 " degradation in the application and/or the entire system. On "\ | |
3460 " Linux this policy requires root privilege.") \ | |
3461 \ | |
3462 product(bool, ThreadPriorityVerbose, false, \ | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
parents:
4807
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changeset
|
3463 "Print priority changes") \ |
0 | 3464 \ |
3465 product(intx, DefaultThreadPriority, -1, \ | |
4854
de268c8a8075
7082553: Interpret Thread.setPriority(Thread.MAX_PRIORITY) to mean FX60 on Solaris 10 and 11
phh
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4807
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changeset
|
3466 "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
|
3467 "specified (-1 means no change)") \ |
0 | 3468 \ |
3469 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
|
3470 "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
|
3471 "(-1 means no change)") \ |
0 | 3472 \ |
3473 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
|
3474 "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
|
3475 "(-1 means no change)") \ |
0 | 3476 \ |
3477 product(bool, CompilerThreadHintNoPreempt, true, \ | |
3478 "(Solaris only) Give compiler threads an extra quanta") \ | |
3479 \ | |
3480 product(bool, VMThreadHintNoPreempt, false, \ | |
3481 "(Solaris only) Give VM thread an extra quanta") \ | |
3482 \ | |
12836
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|
3483 product(intx, JavaPriority1_To_OSPriority, -1, \ |
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changeset
|
3484 "Map Java priorities to OS priorities") \ |
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changeset
|
3485 \ |
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changeset
|
3486 product(intx, JavaPriority2_To_OSPriority, -1, \ |
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changeset
|
3487 "Map Java priorities to OS priorities") \ |
b4d8a3d4db73
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changeset
|
3488 \ |
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changeset
|
3489 product(intx, JavaPriority3_To_OSPriority, -1, \ |
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changeset
|
3490 "Map Java priorities to OS priorities") \ |
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changeset
|
3491 \ |
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changeset
|
3492 product(intx, JavaPriority4_To_OSPriority, -1, \ |
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changeset
|
3493 "Map Java priorities to OS priorities") \ |
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changeset
|
3494 \ |
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3495 product(intx, JavaPriority5_To_OSPriority, -1, \ |
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3496 "Map Java priorities to OS priorities") \ |
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|
3497 \ |
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|
3498 product(intx, JavaPriority6_To_OSPriority, -1, \ |
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3499 "Map Java priorities to OS priorities") \ |
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|
3500 \ |
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3501 product(intx, JavaPriority7_To_OSPriority, -1, \ |
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3502 "Map Java priorities to OS priorities") \ |
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3503 \ |
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3504 product(intx, JavaPriority8_To_OSPriority, -1, \ |
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3505 "Map Java priorities to OS priorities") \ |
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3506 \ |
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3507 product(intx, JavaPriority9_To_OSPriority, -1, \ |
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3508 "Map Java priorities to OS priorities") \ |
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3509 \ |
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3510 product(intx, JavaPriority10_To_OSPriority,-1, \ |
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3511 "Map Java priorities to OS priorities") \ |
0 | 3512 \ |
4854
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|
3513 experimental(bool, UseCriticalJavaThreadPriority, false, \ |
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|
3514 "Java thread priority 10 maps to critical scheduling priority") \ |
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|
3515 \ |
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|
3516 experimental(bool, UseCriticalCompilerThreadPriority, false, \ |
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|
3517 "Compiler thread(s) run at critical scheduling priority") \ |
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|
3518 \ |
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|
3519 experimental(bool, UseCriticalCMSThreadPriority, false, \ |
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|
3520 "ConcurrentMarkSweep thread runs at critical scheduling priority")\ |
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|
3521 \ |
0 | 3522 /* compiler debugging */ \ |
3523 notproduct(intx, CompileTheWorldStartAt, 1, \ | |
3524 "First class to consider when using +CompileTheWorld") \ | |
3525 \ | |
3526 notproduct(intx, CompileTheWorldStopAt, max_jint, \ | |
3527 "Last class to consider when using +CompileTheWorld") \ | |
3528 \ | |
3529 develop(intx, NewCodeParameter, 0, \ | |
3530 "Testing Only: Create a dedicated integer parameter before " \ | |
3531 "putback") \ | |
3532 \ | |
3533 /* new oopmap storage allocation */ \ | |
3534 develop(intx, MinOopMapAllocation, 8, \ | |
3535 "Minimum number of OopMap entries in an OopMapSet") \ | |
3536 \ | |
3537 /* Background Compilation */ \ | |
3538 develop(intx, LongCompileThreshold, 50, \ | |
3539 "Used with +TraceLongCompiles") \ | |
3540 \ | |
3541 product(intx, StarvationMonitorInterval, 200, \ | |
12836
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3542 "Pause between each check (in milliseconds)") \ |
0 | 3543 \ |
3544 /* recompilation */ \ | |
3545 product_pd(intx, CompileThreshold, \ | |
3546 "number of interpreted method invocations before (re-)compiling") \ | |
3547 \ | |
3548 product_pd(intx, BackEdgeThreshold, \ | |
12836
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3549 "Interpreter Back edge threshold at which an OSR compilation is " \ |
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3550 "invoked") \ |
0 | 3551 \ |
1783 | 3552 product(intx, Tier0InvokeNotifyFreqLog, 7, \ |
12836
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3553 "Interpreter (tier 0) invocation notification frequency") \ |
1783 | 3554 \ |
3555 product(intx, Tier2InvokeNotifyFreqLog, 11, \ | |
12836
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3556 "C1 without MDO (tier 2) invocation notification frequency") \ |
1783 | 3557 \ |
3558 product(intx, Tier3InvokeNotifyFreqLog, 10, \ | |
3559 "C1 with MDO profiling (tier 3) invocation notification " \ | |
12836
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3560 "frequency") \ |
1783 | 3561 \ |
3964
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|
3562 product(intx, Tier23InlineeNotifyFreqLog, 20, \ |
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|
3563 "Inlinee invocation (tiers 2 and 3) notification frequency") \ |
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|
3564 \ |
1783 | 3565 product(intx, Tier0BackedgeNotifyFreqLog, 10, \ |
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3566 "Interpreter (tier 0) invocation notification frequency") \ |
1783 | 3567 \ |
3568 product(intx, Tier2BackedgeNotifyFreqLog, 14, \ | |
12836
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3569 "C1 without MDO (tier 2) invocation notification frequency") \ |
1783 | 3570 \ |
3571 product(intx, Tier3BackedgeNotifyFreqLog, 13, \ | |
3572 "C1 with MDO profiling (tier 3) invocation notification " \ | |
12836
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3573 "frequency") \ |
1783 | 3574 \ |
3575 product(intx, Tier2CompileThreshold, 0, \ | |
3576 "threshold at which tier 2 compilation is invoked") \ | |
3577 \ | |
3578 product(intx, Tier2BackEdgeThreshold, 0, \ | |
3579 "Back edge threshold at which tier 2 compilation is invoked") \ | |
3580 \ | |
3581 product(intx, Tier3InvocationThreshold, 200, \ | |
3582 "Compile if number of method invocations crosses this " \ | |
3583 "threshold") \ | |
3584 \ | |
3585 product(intx, Tier3MinInvocationThreshold, 100, \ | |
3586 "Minimum invocation to compile at tier 3") \ | |
3587 \ | |
3588 product(intx, Tier3CompileThreshold, 2000, \ | |
3589 "Threshold at which tier 3 compilation is invoked (invocation " \ | |
12836
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3590 "minimum must be satisfied") \ |
1783 | 3591 \ |
4819 | 3592 product(intx, Tier3BackEdgeThreshold, 60000, \ |
1783 | 3593 "Back edge threshold at which tier 3 OSR compilation is invoked") \ |
3594 \ | |
3595 product(intx, Tier4InvocationThreshold, 5000, \ | |
3596 "Compile if number of method invocations crosses this " \ | |
3597 "threshold") \ | |
3598 \ | |
3599 product(intx, Tier4MinInvocationThreshold, 600, \ | |
3600 "Minimum invocation to compile at tier 4") \ | |
3601 \ | |
3602 product(intx, Tier4CompileThreshold, 15000, \ | |
3603 "Threshold at which tier 4 compilation is invoked (invocation " \ | |
12836
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3604 "minimum must be satisfied") \ |
1783 | 3605 \ |
3606 product(intx, Tier4BackEdgeThreshold, 40000, \ | |
3607 "Back edge threshold at which tier 4 OSR compilation is invoked") \ | |
3608 \ | |
3609 product(intx, Tier3DelayOn, 5, \ | |
3610 "If C2 queue size grows over this amount per compiler thread " \ | |
3611 "stop compiling at tier 3 and start compiling at tier 2") \ | |
3612 \ | |
3613 product(intx, Tier3DelayOff, 2, \ | |
3614 "If C2 queue size is less than this amount per compiler thread " \ | |
3615 "allow methods compiled at tier 2 transition to tier 3") \ | |
3616 \ | |
3617 product(intx, Tier3LoadFeedback, 5, \ | |
3618 "Tier 3 thresholds will increase twofold when C1 queue size " \ | |
3619 "reaches this amount per compiler thread") \ | |
3620 \ | |
3621 product(intx, Tier4LoadFeedback, 3, \ | |
3622 "Tier 4 thresholds will increase twofold when C2 queue size " \ | |
3623 "reaches this amount per compiler thread") \ | |
3624 \ | |
3625 product(intx, TieredCompileTaskTimeout, 50, \ | |
3626 "Kill compile task if method was not used within " \ | |
3627 "given timeout in milliseconds") \ | |
3628 \ | |
3629 product(intx, TieredStopAtLevel, 4, \ | |
3630 "Stop at given compilation level") \ | |
3631 \ | |
3632 product(intx, Tier0ProfilingStartPercentage, 200, \ | |
12836
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3633 "Start profiling in interpreter if the counters exceed tier 3 " \ |
1783 | 3634 "thresholds by the specified percentage") \ |
3635 \ | |
10319
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3636 product(uintx, IncreaseFirstTierCompileThresholdAt, 50, \ |
12836
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3637 "Increase the compile threshold for C1 compilation if the code " \ |
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3638 "cache is filled by the specified percentage") \ |
10319
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|
3639 \ |
1783 | 3640 product(intx, TieredRateUpdateMinTime, 1, \ |
3641 "Minimum rate sampling interval (in milliseconds)") \ | |
3642 \ | |
3643 product(intx, TieredRateUpdateMaxTime, 25, \ | |
3644 "Maximum rate sampling interval (in milliseconds)") \ | |
0 | 3645 \ |
3646 product_pd(bool, TieredCompilation, \ | |
1783 | 3647 "Enable tiered compilation") \ |
3648 \ | |
3649 product(bool, PrintTieredEvents, false, \ | |
3650 "Print tiered events notifications") \ | |
0 | 3651 \ |
3652 product_pd(intx, OnStackReplacePercentage, \ | |
12836
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3653 "NON_TIERED number of method invocations/branches (expressed as " \ |
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3654 "% of CompileThreshold) before (re-)compiling OSR code") \ |
0 | 3655 \ |
3656 product(intx, InterpreterProfilePercentage, 33, \ | |
12836
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3657 "NON_TIERED number of method invocations/branches (expressed as " \ |
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|
3658 "% of CompileThreshold) before profiling in the interpreter") \ |
0 | 3659 \ |
3660 develop(intx, MaxRecompilationSearchLength, 10, \ | |
12836
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|
3661 "The maximum number of frames to inspect when searching for " \ |
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|
3662 "recompilee") \ |
0 | 3663 \ |
3664 develop(intx, MaxInterpretedSearchLength, 3, \ | |
12836
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|
3665 "The maximum number of interpreted frames to skip when searching "\ |
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|
3666 "for recompilee") \ |
0 | 3667 \ |
3668 develop(intx, DesiredMethodLimit, 8000, \ | |
12836
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|
3669 "The desired maximum method size (in bytecodes) after inlining") \ |
0 | 3670 \ |
3671 develop(intx, HugeMethodLimit, 8000, \ | |
12836
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|
3672 "Don't compile methods larger than this if " \ |
0 | 3673 "+DontCompileHugeMethods") \ |
3674 \ | |
3675 /* New JDK 1.4 reflection implementation */ \ | |
3676 \ | |
3677 develop(bool, UseNewReflection, true, \ | |
3678 "Temporary flag for transition to reflection based on dynamic " \ | |
3679 "bytecode generation in 1.4; can no longer be turned off in 1.4 " \ | |
3680 "JDK, and is unneeded in 1.3 JDK, but marks most places VM " \ | |
3681 "changes were needed") \ | |
3682 \ | |
3683 develop(bool, VerifyReflectionBytecodes, false, \ | |
3684 "Force verification of 1.4 reflection bytecodes. Does not work " \ | |
3685 "in situations like that described in 4486457 or for " \ | |
3686 "constructors generated for serialization, so can not be enabled "\ | |
3687 "in product.") \ | |
3688 \ | |
3689 product(bool, ReflectionWrapResolutionErrors, true, \ | |
3690 "Temporary flag for transition to AbstractMethodError wrapped " \ | |
3691 "in InvocationTargetException. See 6531596") \ | |
3692 \ | |
3693 develop(intx, FastSuperclassLimit, 8, \ | |
3694 "Depth of hardwired instanceof accelerator array") \ | |
3695 \ | |
3696 /* Properties for Java libraries */ \ | |
3697 \ | |
6199
3f1ab0c19c30
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|
3698 product(uintx, MaxDirectMemorySize, 0, \ |
0 | 3699 "Maximum total size of NIO direct-buffer allocations") \ |
3700 \ | |
14309 | 3701 /* Flags used for temporary code during development */ \ |
0 | 3702 \ |
3703 diagnostic(bool, UseNewCode, false, \ | |
3704 "Testing Only: Use the new version while testing") \ | |
3705 \ | |
3706 diagnostic(bool, UseNewCode2, false, \ | |
3707 "Testing Only: Use the new version while testing") \ | |
3708 \ | |
3709 diagnostic(bool, UseNewCode3, false, \ | |
3710 "Testing Only: Use the new version while testing") \ | |
3711 \ | |
3712 /* flags for performance data collection */ \ | |
3713 \ | |
3797
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7061192: option handling adjustments for oracle and embedded builds
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3780
diff
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|
3714 product(bool, UsePerfData, falseInEmbedded, \ |
12836
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|
3715 "Flag to disable jvmstat instrumentation for performance testing "\ |
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|
3716 "and problem isolation purposes") \ |
0 | 3717 \ |
3718 product(bool, PerfDataSaveToFile, false, \ | |
3719 "Save PerfData memory to hsperfdata_<pid> file on exit") \ | |
3720 \ | |
3721 product(ccstr, PerfDataSaveFile, NULL, \ | |
12836
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|
3722 "Save PerfData memory to the specified absolute pathname. " \ |
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|
3723 "The string %p in the file name (if present) " \ |
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|
3724 "will be replaced by pid") \ |
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|
3725 \ |
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|
3726 product(intx, PerfDataSamplingInterval, 50, \ |
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|
3727 "Data sampling interval (in milliseconds)") \ |
0 | 3728 \ |
3729 develop(bool, PerfTraceDataCreation, false, \ | |
3730 "Trace creation of Performance Data Entries") \ | |
3731 \ | |
3732 develop(bool, PerfTraceMemOps, false, \ | |
3733 "Trace PerfMemory create/attach/detach calls") \ | |
3734 \ | |
3735 product(bool, PerfDisableSharedMem, false, \ | |
3736 "Store performance data in standard memory") \ | |
3737 \ | |
3738 product(intx, PerfDataMemorySize, 32*K, \ | |
3739 "Size of performance data memory region. Will be rounded " \ | |
3740 "up to a multiple of the native os page size.") \ | |
3741 \ | |
3742 product(intx, PerfMaxStringConstLength, 1024, \ | |
3743 "Maximum PerfStringConstant string length before truncation") \ | |
3744 \ | |
3745 product(bool, PerfAllowAtExitRegistration, false, \ | |
3746 "Allow registration of atexit() methods") \ | |
3747 \ | |
3748 product(bool, PerfBypassFileSystemCheck, false, \ | |
3749 "Bypass Win32 file system criteria checks (Windows Only)") \ | |
3750 \ | |
3751 product(intx, UnguardOnExecutionViolation, 0, \ | |
12836
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|
3752 "Unguard page and retry on no-execute fault (Win32 only) " \ |
0 | 3753 "0=off, 1=conservative, 2=aggressive") \ |
3754 \ | |
3755 /* Serviceability Support */ \ | |
3756 \ | |
3757 product(bool, ManagementServer, false, \ | |
3758 "Create JMX Management Server") \ | |
3759 \ | |
3760 product(bool, DisableAttachMechanism, false, \ | |
12836
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|
3761 "Disable mechanism that allows tools to attach to this VM") \ |
0 | 3762 \ |
3763 product(bool, StartAttachListener, false, \ | |
3764 "Always start Attach Listener at VM startup") \ | |
3765 \ | |
3766 manageable(bool, PrintConcurrentLocks, false, \ | |
3767 "Print java.util.concurrent locks in thread dump") \ | |
3768 \ | |
2209
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2204
diff
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|
3769 product(bool, TransmitErrorReport, false, \ |
2199
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2192
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|
3770 "Enable error report transmission on erroneous termination") \ |
d8a72fbc4be7
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|
3771 \ |
2209
e9aa2ca89ad6
7019718: make error reporting flags product instead of diagnostic
kamg
parents:
2204
diff
changeset
|
3772 product(ccstr, ErrorReportServer, NULL, \ |
2199
d8a72fbc4be7
7003401: Implement VM error-reporting functionality on erroneous termination
kamg
parents:
2192
diff
changeset
|
3773 "Override built-in error report server address") \ |
d8a72fbc4be7
7003401: Implement VM error-reporting functionality on erroneous termination
kamg
parents:
2192
diff
changeset
|
3774 \ |
0 | 3775 /* Shared spaces */ \ |
3776 \ | |
3777 product(bool, UseSharedSpaces, true, \ | |
7461
561148896559
8005076: Creating a CDS archive with one alignment and running another causes a crash.
hseigel
parents:
7428
diff
changeset
|
3778 "Use shared spaces for metadata") \ |
0 | 3779 \ |
3780 product(bool, RequireSharedSpaces, false, \ | |
7461
561148896559
8005076: Creating a CDS archive with one alignment and running another causes a crash.
hseigel
parents:
7428
diff
changeset
|
3781 "Require shared spaces for metadata") \ |
0 | 3782 \ |
3783 product(bool, DumpSharedSpaces, false, \ | |
12836
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3784 "Special mode: JVM reads a class list, loads classes, builds " \ |
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3785 "shared spaces, and dumps the shared spaces to a file to be " \ |
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3786 "used in future JVM runs") \ |
0 | 3787 \ |
3788 product(bool, PrintSharedSpaces, false, \ | |
3789 "Print usage of shared spaces") \ | |
3790 \ | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6633
diff
changeset
|
3791 product(uintx, SharedReadWriteSize, NOT_LP64(12*M) LP64_ONLY(16*M), \ |
7461
561148896559
8005076: Creating a CDS archive with one alignment and running another causes a crash.
hseigel
parents:
7428
diff
changeset
|
3792 "Size of read-write space for metadata (in bytes)") \ |
0 | 3793 \ |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6633
diff
changeset
|
3794 product(uintx, SharedReadOnlySize, NOT_LP64(12*M) LP64_ONLY(16*M), \ |
7461
561148896559
8005076: Creating a CDS archive with one alignment and running another causes a crash.
hseigel
parents:
7428
diff
changeset
|
3795 "Size of read-only space for metadata (in bytes)") \ |
0 | 3796 \ |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6633
diff
changeset
|
3797 product(uintx, SharedMiscDataSize, NOT_LP64(2*M) LP64_ONLY(4*M), \ |
7461
561148896559
8005076: Creating a CDS archive with one alignment and running another causes a crash.
hseigel
parents:
7428
diff
changeset
|
3798 "Size of the shared miscellaneous data area (in bytes)") \ |
0 | 3799 \ |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6633
diff
changeset
|
3800 product(uintx, SharedMiscCodeSize, 120*K, \ |
7461
561148896559
8005076: Creating a CDS archive with one alignment and running another causes a crash.
hseigel
parents:
7428
diff
changeset
|
3801 "Size of the shared miscellaneous code area (in bytes)") \ |
0 | 3802 \ |
8804
91bf0bdae37b
8008217: CDS: Class data sharing limits the malloc heap on Solaris
coleenp
parents:
8802
diff
changeset
|
3803 product(uintx, SharedBaseAddress, LP64_ONLY(32*G) \ |
91bf0bdae37b
8008217: CDS: Class data sharing limits the malloc heap on Solaris
coleenp
parents:
8802
diff
changeset
|
3804 NOT_LP64(LINUX_ONLY(2*G) NOT_LINUX(0)), \ |
91bf0bdae37b
8008217: CDS: Class data sharing limits the malloc heap on Solaris
coleenp
parents:
8802
diff
changeset
|
3805 "Address to allocate shared memory region for class data") \ |
0 | 3806 \ |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3807 diagnostic(bool, EnableInvokeDynamic, true, \ |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3808 "support JSR 292 (method handles, invokedynamic, " \ |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3809 "anonymous classes") \ |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3810 \ |
3449
a9b8b43b115f
7052219: JSR 292: Crash in ~BufferBlob::MethodHandles adapters
never
parents:
3418
diff
changeset
|
3811 diagnostic(bool, PrintMethodHandleStubs, false, \ |
a9b8b43b115f
7052219: JSR 292: Crash in ~BufferBlob::MethodHandles adapters
never
parents:
3418
diff
changeset
|
3812 "Print generated stub code for method handles") \ |
a9b8b43b115f
7052219: JSR 292: Crash in ~BufferBlob::MethodHandles adapters
never
parents:
3418
diff
changeset
|
3813 \ |
710 | 3814 develop(bool, TraceMethodHandles, false, \ |
3815 "trace internal method handle operations") \ | |
3816 \ | |
3817 diagnostic(bool, VerifyMethodHandles, trueInDebug, \ | |
3818 "perform extra checks when constructing method handles") \ | |
3819 \ | |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6199
diff
changeset
|
3820 diagnostic(bool, ShowHiddenFrames, false, \ |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6199
diff
changeset
|
3821 "show method handle implementation frames (usually hidden)") \ |
3388
a80577f854f9
7045513: JSR 292 inlining causes crashes in methodHandleWalk.cpp
never
parents:
3384
diff
changeset
|
3822 \ |
1173
73b22f919c34
6912065: final fields in objects need to support inlining optimizations for JSR 292
jrose
parents:
1157
diff
changeset
|
3823 experimental(bool, TrustFinalNonStaticFields, false, \ |
73b22f919c34
6912065: final fields in objects need to support inlining optimizations for JSR 292
jrose
parents:
1157
diff
changeset
|
3824 "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
|
3825 \ |
14665 | 3826 diagnostic(bool, FoldStableValues, true, \ |
3827 "Optimize loads from stable fields (marked w/ @Stable)") \ | |
12190
edb5ab0f3fe5
8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents:
12154
diff
changeset
|
3828 \ |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3829 develop(bool, TraceInvokeDynamic, false, \ |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3830 "trace internal invoke dynamic operations") \ |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3831 \ |
0 | 3832 diagnostic(bool, PauseAtStartup, false, \ |
3833 "Causes the VM to pause at startup time and wait for the pause " \ | |
3834 "file to be removed (default: ./vm.paused.<pid>)") \ | |
3835 \ | |
3836 diagnostic(ccstr, PauseAtStartupFile, NULL, \ | |
3837 "The file to create and for whose removal to await when pausing " \ | |
3838 "at startup. (default: ./vm.paused.<pid>)") \ | |
3839 \ | |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2265
diff
changeset
|
3840 diagnostic(bool, PauseAtExit, false, \ |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2265
diff
changeset
|
3841 "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
|
3842 \ |
0 | 3843 product(bool, ExtendedDTraceProbes, false, \ |
3844 "Enable performance-impacting dtrace probes") \ | |
3845 \ | |
3846 product(bool, DTraceMethodProbes, false, \ | |
3847 "Enable dtrace probes for method-entry and method-exit") \ | |
3848 \ | |
3849 product(bool, DTraceAllocProbes, false, \ | |
3850 "Enable dtrace probes for object allocation") \ | |
3851 \ | |
3852 product(bool, DTraceMonitorProbes, false, \ | |
3853 "Enable dtrace probes for monitor events") \ | |
3854 \ | |
3855 product(bool, RelaxAccessControlCheck, false, \ | |
3856 "Relax the access control checks in the verifier") \ | |
3857 \ | |
116
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
113
diff
changeset
|
3858 diagnostic(bool, PrintDTraceDOF, false, \ |
12836
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3859 "Print the DTrace DOF passed to the system for JSDT probes") \ |
116
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
113
diff
changeset
|
3860 \ |
6982
e4f764ddb06a
7122219: Passed StringTableSize value not verified
hseigel
parents:
6935
diff
changeset
|
3861 product(uintx, StringTableSize, defaultStringTableSize, \ |
2378 | 3862 "Number of buckets in the interned String table") \ |
3863 \ | |
12825
c90e76575b03
8019375: Internal symbol table size should be tunable.
kevinw
parents:
12326
diff
changeset
|
3864 experimental(uintx, SymbolTableSize, defaultSymbolTableSize, \ |
c90e76575b03
8019375: Internal symbol table size should be tunable.
kevinw
parents:
12326
diff
changeset
|
3865 "Number of buckets in the JVM internal Symbol table") \ |
c90e76575b03
8019375: Internal symbol table size should be tunable.
kevinw
parents:
12326
diff
changeset
|
3866 \ |
6934 | 3867 develop(bool, TraceDefaultMethods, false, \ |
3868 "Trace the default method processing steps") \ | |
3869 \ | |
3870 develop(bool, VerifyGenericSignatures, false, \ | |
3871 "Abort VM on erroneous or inconsistent generic signatures") \ | |
3872 \ | |
449
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
443
diff
changeset
|
3873 product(bool, UseVMInterruptibleIO, false, \ |
0 | 3874 "(Unstable, Solaris-specific) Thread interrupt before or with " \ |
12836
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3875 "EINTR for I/O operations results in OS_INTRPT. The default " \ |
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3876 "value of this flag is true for JDK 6 and earlier") \ |
5915 | 3877 \ |
3878 diagnostic(bool, WhiteBoxAPI, false, \ | |
6064
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
5979
diff
changeset
|
3879 "Enable internal testing APIs") \ |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
5979
diff
changeset
|
3880 \ |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
5979
diff
changeset
|
3881 product(bool, PrintGCCause, true, \ |
8702 | 3882 "Include GC cause in GC logging") \ |
3883 \ | |
9073
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
9071
diff
changeset
|
3884 product(bool , AllowNonVirtualCalls, false, \ |
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
9071
diff
changeset
|
3885 "Obey the ACC_SUPER flag and allow invokenonvirtual calls") \ |
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
9071
diff
changeset
|
3886 \ |
10270
f944ba972151
8014138: Add VM option to facilitate the writing of CDS tests
hseigel
parents:
10269
diff
changeset
|
3887 diagnostic(ccstr, SharedArchiveFile, NULL, \ |
f944ba972151
8014138: Add VM option to facilitate the writing of CDS tests
hseigel
parents:
10269
diff
changeset
|
3888 "Override the default location of the CDS archive file") \ |
f944ba972151
8014138: Add VM option to facilitate the writing of CDS tests
hseigel
parents:
10269
diff
changeset
|
3889 \ |
9073
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
9071
diff
changeset
|
3890 experimental(uintx, ArrayAllocatorMallocLimit, \ |
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
9071
diff
changeset
|
3891 SOLARIS_ONLY(64*K) NOT_SOLARIS(max_uintx), \ |
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
9071
diff
changeset
|
3892 "Allocation less than this value will be allocated " \ |
10405 | 3893 "using malloc. Larger allocations will use mmap.") \ |
3894 \ | |
14662
3c3953fb3f2a
8033380: Experimental VM flag to enforce access atomicity
shade
parents:
14500
diff
changeset
|
3895 experimental(bool, AlwaysAtomicAccesses, false, \ |
3c3953fb3f2a
8033380: Experimental VM flag to enforce access atomicity
shade
parents:
14500
diff
changeset
|
3896 "Accesses to all variables should always be atomic") \ |
3c3953fb3f2a
8033380: Experimental VM flag to enforce access atomicity
shade
parents:
14500
diff
changeset
|
3897 \ |
10405 | 3898 product(bool, EnableTracing, false, \ |
3899 "Enable event-based tracing") \ | |
12836
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3900 \ |
10405 | 3901 product(bool, UseLockedTracing, false, \ |
3902 "Use locked-tracing when doing event-based tracing") | |
3903 | |
0 | 3904 /* |
3905 * Macros for factoring of globals | |
3906 */ | |
3907 | |
3908 // Interface macros | |
12322
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12269
diff
changeset
|
3909 #define DECLARE_PRODUCT_FLAG(type, name, value, doc) extern "C" type name; |
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12269
diff
changeset
|
3910 #define DECLARE_PD_PRODUCT_FLAG(type, name, doc) extern "C" type name; |
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12269
diff
changeset
|
3911 #define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name; |
350
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
3912 #define DECLARE_EXPERIMENTAL_FLAG(type, name, value, doc) extern "C" type name; |
12322
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12269
diff
changeset
|
3913 #define DECLARE_MANAGEABLE_FLAG(type, name, value, doc) extern "C" type name; |
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12269
diff
changeset
|
3914 #define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name; |
0 | 3915 #ifdef PRODUCT |
12322
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12269
diff
changeset
|
3916 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type CONST_##name; const type name = value; |
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12269
diff
changeset
|
3917 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type CONST_##name; const type name = pd_##name; |
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12269
diff
changeset
|
3918 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type CONST_##name; |
0 | 3919 #else |
12322
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12269
diff
changeset
|
3920 #define DECLARE_DEVELOPER_FLAG(type, name, value, doc) extern "C" type name; |
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12269
diff
changeset
|
3921 #define DECLARE_PD_DEVELOPER_FLAG(type, name, doc) extern "C" type name; |
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12269
diff
changeset
|
3922 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name; |
0 | 3923 #endif |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3924 // 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
|
3925 #ifdef _LP64 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3926 #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
|
3927 #else |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3928 #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
|
3929 #endif // _LP64 |
0 | 3930 |
3931 // Implementation macros | |
12322
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12269
diff
changeset
|
3932 #define MATERIALIZE_PRODUCT_FLAG(type, name, value, doc) type name = value; |
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12269
diff
changeset
|
3933 #define MATERIALIZE_PD_PRODUCT_FLAG(type, name, doc) type name = pd_##name; |
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12269
diff
changeset
|
3934 #define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value; |
350
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
3935 #define MATERIALIZE_EXPERIMENTAL_FLAG(type, name, value, doc) type name = value; |
12322
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12269
diff
changeset
|
3936 #define MATERIALIZE_MANAGEABLE_FLAG(type, name, value, doc) type name = value; |
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12269
diff
changeset
|
3937 #define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value; |
0 | 3938 #ifdef PRODUCT |
12322
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12269
diff
changeset
|
3939 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type CONST_##name = value; |
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12269
diff
changeset
|
3940 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type CONST_##name = pd_##name; |
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12269
diff
changeset
|
3941 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type CONST_##name = value; |
0 | 3942 #else |
12322
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12269
diff
changeset
|
3943 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value; |
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12269
diff
changeset
|
3944 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name; |
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12269
diff
changeset
|
3945 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value; |
0 | 3946 #endif |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3947 #ifdef _LP64 |
12322
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12269
diff
changeset
|
3948 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) type name = value; |
113
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3949 #else |
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3950 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) /* flag is constant */ |
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3951 #endif // _LP64 |
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3953 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 | 3954 |
3955 RUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG) | |
1972 | 3956 |
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3957 ARCH_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_EXPERIMENTAL_FLAG, DECLARE_NOTPRODUCT_FLAG) |
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3958 |
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3959 // Extensions |
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3960 |
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3961 #include "runtime/globals_ext.hpp" |
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3962 |
1972 | 3963 #endif // SHARE_VM_RUNTIME_GLOBALS_HPP |