Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/globals.hpp @ 20596:4356234e712a
8041992: Fix of JDK-8034775 neglects to account for non-JIT VMs
Summary: Allow 0 compiler threads if no JIT is used.
Reviewed-by: kvn, dholmes
Contributed-by: Severin Gehwolf <sgehwolf@redhat.com>
author | anoll |
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date | Fri, 02 May 2014 06:24:39 +0200 |
parents | 46140919bf90 |
children | fa6adc194d48 |
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 |
132 #ifdef COMPILER2 | |
133 #ifdef TARGET_ARCH_x86 | |
134 # include "c2_globals_x86.hpp" | |
135 #endif | |
136 #ifdef TARGET_ARCH_sparc | |
137 # include "c2_globals_sparc.hpp" | |
138 #endif | |
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139 #ifdef TARGET_ARCH_arm |
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140 # include "c2_globals_arm.hpp" |
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141 #endif |
14411 | 142 #ifdef TARGET_ARCH_ppc |
143 # include "c2_globals_ppc.hpp" | |
144 #endif | |
1972 | 145 #ifdef TARGET_OS_FAMILY_linux |
146 # include "c2_globals_linux.hpp" | |
147 #endif | |
148 #ifdef TARGET_OS_FAMILY_solaris | |
149 # include "c2_globals_solaris.hpp" | |
150 #endif | |
151 #ifdef TARGET_OS_FAMILY_windows | |
152 # include "c2_globals_windows.hpp" | |
153 #endif | |
14411 | 154 #ifdef TARGET_OS_FAMILY_aix |
155 # include "c2_globals_aix.hpp" | |
156 #endif | |
3960 | 157 #ifdef TARGET_OS_FAMILY_bsd |
158 # include "c2_globals_bsd.hpp" | |
159 #endif | |
1972 | 160 #endif |
161 #ifdef SHARK | |
162 #ifdef TARGET_ARCH_zero | |
163 # include "shark_globals_zero.hpp" | |
164 #endif | |
165 #endif | |
166 | |
1692 | 167 #if !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK) |
0 | 168 define_pd_global(bool, BackgroundCompilation, false); |
169 define_pd_global(bool, UseTLAB, false); | |
170 define_pd_global(bool, CICompileOSR, false); | |
171 define_pd_global(bool, UseTypeProfile, false); | |
172 define_pd_global(bool, UseOnStackReplacement, false); | |
173 define_pd_global(bool, InlineIntrinsics, false); | |
174 define_pd_global(bool, PreferInterpreterNativeStubs, true); | |
175 define_pd_global(bool, ProfileInterpreter, false); | |
176 define_pd_global(bool, ProfileTraps, false); | |
177 define_pd_global(bool, TieredCompilation, false); | |
178 | |
179 define_pd_global(intx, CompileThreshold, 0); | |
180 define_pd_global(intx, BackEdgeThreshold, 0); | |
181 | |
182 define_pd_global(intx, OnStackReplacePercentage, 0); | |
183 define_pd_global(bool, ResizeTLAB, false); | |
184 define_pd_global(intx, FreqInlineSize, 0); | |
185 define_pd_global(intx, NewSizeThreadIncrease, 4*K); | |
186 define_pd_global(intx, InlineClassNatives, true); | |
187 define_pd_global(intx, InlineUnsafeOps, true); | |
188 define_pd_global(intx, InitialCodeCacheSize, 160*K); | |
189 define_pd_global(intx, ReservedCodeCacheSize, 32*M); | |
190 define_pd_global(intx, CodeCacheExpansionSize, 32*K); | |
191 define_pd_global(intx, CodeCacheMinBlockLength, 1); | |
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192 define_pd_global(intx, CodeCacheMinimumUseSpace, 200*K); |
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193 define_pd_global(uintx,MetaspaceSize, ScaleForWordSize(4*M)); |
0 | 194 define_pd_global(bool, NeverActAsServerClassMachine, true); |
1064 | 195 define_pd_global(uint64_t,MaxRAM, 1ULL*G); |
0 | 196 #define CI_COMPILER_COUNT 0 |
197 #else | |
198 | |
199 #ifdef COMPILER2 | |
200 #define CI_COMPILER_COUNT 2 | |
201 #else | |
202 #define CI_COMPILER_COUNT 1 | |
203 #endif // COMPILER2 | |
204 | |
205 #endif // no compilers | |
206 | |
207 // string type aliases used only in this file | |
208 typedef const char* ccstr; | |
209 typedef const char* ccstrlist; // represents string arguments which accumulate | |
210 | |
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211 struct Flag { |
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212 enum Flags { |
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213 // value origin |
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214 DEFAULT = 0, |
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215 COMMAND_LINE = 1, |
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216 ENVIRON_VAR = 2, |
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217 CONFIG_FILE = 3, |
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218 MANAGEMENT = 4, |
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219 ERGONOMIC = 5, |
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220 ATTACH_ON_DEMAND = 6, |
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221 INTERNAL = 7, |
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222 |
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223 LAST_VALUE_ORIGIN = INTERNAL, |
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224 VALUE_ORIGIN_BITS = 4, |
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225 VALUE_ORIGIN_MASK = right_n_bits(VALUE_ORIGIN_BITS), |
0 | 226 |
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227 // flag kind |
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228 KIND_PRODUCT = 1 << 4, |
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229 KIND_MANAGEABLE = 1 << 5, |
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230 KIND_DIAGNOSTIC = 1 << 6, |
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231 KIND_EXPERIMENTAL = 1 << 7, |
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232 KIND_NOT_PRODUCT = 1 << 8, |
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233 KIND_DEVELOP = 1 << 9, |
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234 KIND_PLATFORM_DEPENDENT = 1 << 10, |
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235 KIND_READ_WRITE = 1 << 11, |
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236 KIND_C1 = 1 << 12, |
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237 KIND_C2 = 1 << 13, |
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238 KIND_ARCH = 1 << 14, |
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239 KIND_SHARK = 1 << 15, |
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240 KIND_LP64_PRODUCT = 1 << 16, |
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241 KIND_COMMERCIAL = 1 << 17, |
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242 |
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243 KIND_MASK = ~VALUE_ORIGIN_MASK |
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244 }; |
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245 |
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246 const char* _type; |
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247 const char* _name; |
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248 void* _addr; |
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249 NOT_PRODUCT(const char* _doc;) |
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250 Flags _flags; |
0 | 251 |
252 // points to all Flags static array | |
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253 static Flag* flags; |
0 | 254 |
255 // number of flags | |
256 static size_t numFlags; | |
257 | |
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258 static Flag* find_flag(const char* name, size_t length, bool allow_locked = false, bool return_flag = false); |
11070 | 259 static Flag* fuzzy_match(const char* name, size_t length, bool allow_locked = false); |
0 | 260 |
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261 void check_writable(); |
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262 |
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263 bool is_bool() const; |
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264 bool get_bool() const; |
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265 void set_bool(bool value); |
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266 |
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267 bool is_intx() const; |
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268 intx get_intx() const; |
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269 void set_intx(intx value); |
0 | 270 |
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271 bool is_uintx() const; |
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272 uintx get_uintx() const; |
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273 void set_uintx(uintx value); |
0 | 274 |
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275 bool is_uint64_t() const; |
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276 uint64_t get_uint64_t() const; |
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277 void set_uint64_t(uint64_t value); |
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278 |
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279 bool is_double() const; |
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280 double get_double() const; |
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281 void set_double(double value); |
0 | 282 |
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283 bool is_ccstr() const; |
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284 bool ccstr_accumulates() const; |
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285 ccstr get_ccstr() const; |
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286 void set_ccstr(ccstr value); |
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287 |
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288 Flags get_origin(); |
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289 void set_origin(Flags origin); |
1064 | 290 |
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291 bool is_default(); |
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292 bool is_ergonomic(); |
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293 bool is_command_line(); |
0 | 294 |
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295 bool is_product() const; |
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296 bool is_manageable() const; |
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297 bool is_diagnostic() const; |
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298 bool is_experimental() const; |
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299 bool is_notproduct() const; |
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300 bool is_develop() const; |
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301 bool is_read_write() const; |
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302 bool is_commercial() const; |
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303 |
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304 bool is_constant_in_binary() const; |
0 | 305 |
306 bool is_unlocker() const; | |
307 bool is_unlocked() const; | |
308 bool is_writeable() const; | |
309 bool is_external() const; | |
310 | |
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311 bool is_unlocker_ext() const; |
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312 bool is_unlocked_ext() const; |
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313 bool is_writeable_ext() const; |
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314 bool is_external_ext() const; |
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315 |
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316 void unlock_diagnostic(); |
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317 |
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318 void get_locked_message(char*, int) const; |
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319 void get_locked_message_ext(char*, int) const; |
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320 |
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321 void print_on(outputStream* st, bool withComments = false ); |
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322 void print_kind(outputStream* st); |
0 | 323 void print_as_flag(outputStream* st); |
324 }; | |
325 | |
326 // debug flags control various aspects of the VM and are global accessible | |
327 | |
328 // use FlagSetting to temporarily change some debug flag | |
329 // e.g. FlagSetting fs(DebugThisAndThat, true); | |
330 // restored to previous value upon leaving scope | |
331 class FlagSetting { | |
332 bool val; | |
333 bool* flag; | |
334 public: | |
335 FlagSetting(bool& fl, bool newValue) { flag = &fl; val = fl; fl = newValue; } | |
336 ~FlagSetting() { *flag = val; } | |
337 }; | |
338 | |
339 | |
340 class CounterSetting { | |
341 intx* counter; | |
342 public: | |
343 CounterSetting(intx* cnt) { counter = cnt; (*counter)++; } | |
344 ~CounterSetting() { (*counter)--; } | |
345 }; | |
346 | |
347 | |
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348 class UIntFlagSetting { |
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349 uintx val; |
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350 uintx* flag; |
0 | 351 public: |
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352 UIntFlagSetting(uintx& fl, uintx newValue) { flag = &fl; val = fl; fl = newValue; } |
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353 ~UIntFlagSetting() { *flag = val; } |
0 | 354 }; |
355 | |
356 | |
357 class DoubleFlagSetting { | |
358 double val; | |
359 double* flag; | |
360 public: | |
361 DoubleFlagSetting(double& fl, double newValue) { flag = &fl; val = fl; fl = newValue; } | |
362 ~DoubleFlagSetting() { *flag = val; } | |
363 }; | |
364 | |
365 | |
366 class CommandLineFlags { | |
367 public: | |
20249 | 368 static bool boolAt(const char* name, size_t len, bool* value); |
369 static bool boolAt(const char* name, bool* value) { return boolAt(name, strlen(name), value); } | |
370 static bool boolAtPut(const char* name, size_t len, bool* value, Flag::Flags origin); | |
371 static bool boolAtPut(const char* name, bool* value, Flag::Flags origin) { return boolAtPut(name, strlen(name), value, origin); } | |
0 | 372 |
20249 | 373 static bool intxAt(const char* name, size_t len, intx* value); |
374 static bool intxAt(const char* name, intx* value) { return intxAt(name, strlen(name), value); } | |
375 static bool intxAtPut(const char* name, size_t len, intx* value, Flag::Flags origin); | |
376 static bool intxAtPut(const char* name, intx* value, Flag::Flags origin) { return intxAtPut(name, strlen(name), value, origin); } | |
0 | 377 |
20249 | 378 static bool uintxAt(const char* name, size_t len, uintx* value); |
379 static bool uintxAt(const char* name, uintx* value) { return uintxAt(name, strlen(name), value); } | |
380 static bool uintxAtPut(const char* name, size_t len, uintx* value, Flag::Flags origin); | |
381 static bool uintxAtPut(const char* name, uintx* value, Flag::Flags origin) { return uintxAtPut(name, strlen(name), value, origin); } | |
0 | 382 |
20249 | 383 static bool uint64_tAt(const char* name, size_t len, uint64_t* value); |
384 static bool uint64_tAt(const char* name, uint64_t* value) { return uint64_tAt(name, strlen(name), value); } | |
385 static bool uint64_tAtPut(const char* name, size_t len, uint64_t* value, Flag::Flags origin); | |
386 static bool uint64_tAtPut(const char* name, uint64_t* value, Flag::Flags origin) { return uint64_tAtPut(name, strlen(name), value, origin); } | |
1064 | 387 |
20249 | 388 static bool doubleAt(const char* name, size_t len, double* value); |
389 static bool doubleAt(const char* name, double* value) { return doubleAt(name, strlen(name), value); } | |
390 static bool doubleAtPut(const char* name, size_t len, double* value, Flag::Flags origin); | |
391 static bool doubleAtPut(const char* name, double* value, Flag::Flags origin) { return doubleAtPut(name, strlen(name), value, origin); } | |
0 | 392 |
20249 | 393 static bool ccstrAt(const char* name, size_t len, ccstr* value); |
394 static bool ccstrAt(const char* name, ccstr* value) { return ccstrAt(name, strlen(name), value); } | |
20248 | 395 // Contract: Flag will make private copy of the incoming value. |
396 // Outgoing value is always malloc-ed, and caller MUST call free. | |
20249 | 397 static bool ccstrAtPut(const char* name, size_t len, ccstr* value, Flag::Flags origin); |
398 static bool ccstrAtPut(const char* name, ccstr* value, Flag::Flags origin) { return ccstrAtPut(name, strlen(name), value, origin); } | |
0 | 399 |
400 // Returns false if name is not a command line flag. | |
401 static bool wasSetOnCmdline(const char* name, bool* value); | |
4773 | 402 static void printSetFlags(outputStream* out); |
0 | 403 |
4773 | 404 static void printFlags(outputStream* out, bool withComments); |
0 | 405 |
406 static void verify() PRODUCT_RETURN; | |
407 }; | |
408 | |
409 // use this for flags that are true by default in the debug version but | |
410 // false in the optimized version, and vice versa | |
411 #ifdef ASSERT | |
412 #define trueInDebug true | |
413 #define falseInDebug false | |
414 #else | |
415 #define trueInDebug false | |
416 #define falseInDebug true | |
417 #endif | |
418 | |
419 // use this for flags that are true per default in the product build | |
420 // but false in development builds, and vice versa | |
421 #ifdef PRODUCT | |
422 #define trueInProduct true | |
423 #define falseInProduct false | |
424 #else | |
425 #define trueInProduct false | |
426 #define falseInProduct true | |
427 #endif | |
428 | |
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429 #ifdef JAVASE_EMBEDDED |
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430 #define falseInEmbedded false |
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431 #else |
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432 #define falseInEmbedded true |
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433 #endif |
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434 |
0 | 435 // develop flags are settable / visible only during development and are constant in the PRODUCT version |
436 // product flags are always settable / visible | |
437 // notproduct flags are settable / visible only during development and are not declared in the PRODUCT version | |
438 | |
439 // A flag must be declared with one of the following types: | |
440 // bool, intx, uintx, ccstr. | |
441 // The type "ccstr" is an alias for "const char*" and is used | |
442 // only in this file, because the macrology requires single-token type names. | |
443 | |
444 // Note: Diagnostic options not meant for VM tuning or for product modes. | |
445 // They are to be used for VM quality assurance or field diagnosis | |
446 // of VM bugs. They are hidden so that users will not be encouraged to | |
447 // try them as if they were VM ordinary execution options. However, they | |
448 // are available in the product version of the VM. Under instruction | |
449 // from support engineers, VM customers can turn them on to collect | |
450 // diagnostic information about VM problems. To use a VM diagnostic | |
451 // option, you must first specify +UnlockDiagnosticVMOptions. | |
452 // (This master switch also affects the behavior of -Xprintflags.) | |
350
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453 // |
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454 // experimental flags are in support of features that are not |
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455 // part of the officially supported product, but are available |
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456 // for experimenting with. They could, for example, be performance |
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457 // features that may not have undergone full or rigorous QA, but which may |
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458 // help performance in some cases and released for experimentation |
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459 // by the community of users and developers. This flag also allows one to |
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460 // be able to build a fully supported product that nonetheless also |
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461 // ships with some unsupported, lightly tested, experimental features. |
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462 // Like the UnlockDiagnosticVMOptions flag above, there is a corresponding |
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463 // UnlockExperimentalVMOptions flag, which allows the control and |
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464 // modification of the experimental flags. |
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465 // |
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466 // Nota bene: neither diagnostic nor experimental options should be used casually, |
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467 // and they are not supported on production loads, except under explicit |
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468 // direction from support engineers. |
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469 // |
0 | 470 // manageable flags are writeable external product flags. |
471 // They are dynamically writeable through the JDK management interface | |
472 // (com.sun.management.HotSpotDiagnosticMXBean API) and also through JConsole. | |
473 // These flags are external exported interface (see CCC). The list of | |
474 // manageable flags can be queried programmatically through the management | |
475 // interface. | |
476 // | |
477 // A flag can be made as "manageable" only if | |
478 // - the flag is defined in a CCC as an external exported interface. | |
479 // - the VM implementation supports dynamic setting of the flag. | |
480 // This implies that the VM must *always* query the flag variable | |
481 // and not reuse state related to the flag state at any given time. | |
482 // - you want the flag to be queried programmatically by the customers. | |
483 // | |
484 // product_rw flags are writeable internal product flags. | |
485 // They are like "manageable" flags but for internal/private use. | |
486 // The list of product_rw flags are internal/private flags which | |
487 // may be changed/removed in a future release. It can be set | |
488 // through the management interface to get/set value | |
489 // when the name of flag is supplied. | |
490 // | |
491 // A flag can be made as "product_rw" only if | |
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 // | |
496 // Note that when there is a need to support develop flags to be writeable, | |
497 // it can be done in the same way as product_rw. | |
498 | |
350
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499 #define RUNTIME_FLAGS(develop, develop_pd, product, product_pd, diagnostic, experimental, notproduct, manageable, product_rw, lp64_product) \ |
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500 \ |
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501 lp64_product(bool, UseCompressedOops, false, \ |
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502 "Use 32-bit object references in 64-bit VM. " \ |
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503 "lp64_product means flag is always constant in 32 bit VM") \ |
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504 \ |
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505 lp64_product(bool, UseCompressedClassPointers, false, \ |
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506 "Use 32-bit class pointers in 64-bit VM. " \ |
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507 "lp64_product means flag is always constant in 32 bit VM") \ |
0 | 508 \ |
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509 notproduct(bool, CheckCompressedOops, true, \ |
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510 "Generate checks in encoding/decoding code in debug VM") \ |
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511 \ |
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512 product_pd(uintx, HeapBaseMinAddress, \ |
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513 "OS specific low limit for heap base address") \ |
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514 \ |
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515 diagnostic(bool, PrintCompressedOopsMode, false, \ |
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516 "Print compressed oops base address and encoding mode") \ |
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517 \ |
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518 lp64_product(intx, ObjectAlignmentInBytes, 8, \ |
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519 "Default object alignment in bytes, 8 is minimum") \ |
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520 \ |
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521 product(bool, AssumeMP, false, \ |
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522 "Instruct the VM to assume multiple processors are available") \ |
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523 \ |
0 | 524 /* UseMembar is theoretically a temp flag used for memory barrier \ |
525 * removal testing. It was supposed to be removed before FCS but has \ | |
526 * been re-added (see 6401008) */ \ | |
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527 product_pd(bool, UseMembar, \ |
0 | 528 "(Unstable) Issues membars on thread state transitions") \ |
529 \ | |
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530 develop(bool, CleanChunkPoolAsync, falseInEmbedded, \ |
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531 "Clean the chunk pool asynchronously") \ |
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532 \ |
6818 | 533 /* Temporary: See 6948537 */ \ |
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534 experimental(bool, UseMemSetInBOT, true, \ |
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535 "(Unstable) uses memset in BOT updates in GC code") \ |
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536 \ |
0 | 537 diagnostic(bool, UnlockDiagnosticVMOptions, trueInDebug, \ |
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538 "Enable normal processing of flags relating to field diagnostics")\ |
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539 \ |
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540 experimental(bool, UnlockExperimentalVMOptions, false, \ |
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541 "Enable normal processing of flags relating to experimental " \ |
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542 "features") \ |
0 | 543 \ |
544 product(bool, JavaMonitorsInStackTrace, true, \ | |
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545 "Print information about Java monitor locks when the stacks are" \ |
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546 "dumped") \ |
0 | 547 \ |
548 product_pd(bool, UseLargePages, \ | |
549 "Use large page memory") \ | |
550 \ | |
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551 product_pd(bool, UseLargePagesIndividualAllocation, \ |
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552 "Allocate large pages individually for better affinity") \ |
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553 \ |
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554 develop(bool, LargePagesIndividualAllocationInjectError, false, \ |
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555 "Fail large pages individual allocation") \ |
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556 \ |
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557 product(bool, UseLargePagesInMetaspace, false, \ |
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558 "Use large page memory in metaspace. " \ |
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559 "Only used if UseLargePages is enabled.") \ |
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560 \ |
0 | 561 develop(bool, TracePageSizes, false, \ |
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562 "Trace page size selection and usage") \ |
0 | 563 \ |
564 product(bool, UseNUMA, false, \ | |
565 "Use NUMA if available") \ | |
566 \ | |
3885 | 567 product(bool, UseNUMAInterleaving, false, \ |
568 "Interleave memory across NUMA nodes if available") \ | |
569 \ | |
570 product(uintx, NUMAInterleaveGranularity, 2*M, \ | |
571 "Granularity to use for NUMA interleaving on Windows OS") \ | |
572 \ | |
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573 product(bool, ForceNUMA, false, \ |
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574 "Force NUMA optimizations on single-node/UMA systems") \ |
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575 \ |
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576 product(uintx, NUMAChunkResizeWeight, 20, \ |
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577 "Percentage (0-100) used to weigh the current sample when " \ |
0 | 578 "computing exponentially decaying average for " \ |
579 "AdaptiveNUMAChunkSizing") \ | |
580 \ | |
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581 product(uintx, NUMASpaceResizeRate, 1*G, \ |
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582 "Do not reallocate more than this amount per collection") \ |
0 | 583 \ |
584 product(bool, UseAdaptiveNUMAChunkSizing, true, \ | |
585 "Enable adaptive chunk sizing for NUMA") \ | |
586 \ | |
587 product(bool, NUMAStats, false, \ | |
588 "Print NUMA stats in detailed heap information") \ | |
589 \ | |
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590 product(uintx, NUMAPageScanRate, 256, \ |
0 | 591 "Maximum number of pages to include in the page scan procedure") \ |
592 \ | |
593 product_pd(bool, NeedsDeoptSuspend, \ | |
594 "True for register window machines (sparc/ia64)") \ | |
595 \ | |
596 product(intx, UseSSE, 99, \ | |
597 "Highest supported SSE instructions set on x86/x64") \ | |
598 \ | |
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599 product(bool, UseAES, false, \ |
6894 | 600 "Control whether AES instructions can be used on x86/x64") \ |
601 \ | |
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602 product(bool, UseSHA, false, \ |
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603 "Control whether SHA instructions can be used on SPARC") \ |
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604 \ |
0 | 605 product(uintx, LargePageSizeInBytes, 0, \ |
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606 "Large page size (0 to let VM choose the page size)") \ |
0 | 607 \ |
608 product(uintx, LargePageHeapSizeThreshold, 128*M, \ | |
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609 "Use large pages if maximum heap is at least this big") \ |
0 | 610 \ |
611 product(bool, ForceTimeHighResolution, false, \ | |
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612 "Using high time resolution (for Win32 only)") \ |
0 | 613 \ |
614 develop(bool, TraceItables, false, \ | |
615 "Trace initialization and use of itables") \ | |
616 \ | |
617 develop(bool, TracePcPatching, false, \ | |
618 "Trace usage of frame::patch_pc") \ | |
619 \ | |
620 develop(bool, TraceJumps, false, \ | |
621 "Trace assembly jumps in thread ring buffer") \ | |
622 \ | |
623 develop(bool, TraceRelocator, false, \ | |
624 "Trace the bytecode relocator") \ | |
625 \ | |
626 develop(bool, TraceLongCompiles, false, \ | |
627 "Print out every time compilation is longer than " \ | |
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628 "a given threshold") \ |
0 | 629 \ |
630 develop(bool, SafepointALot, false, \ | |
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631 "Generate a lot of safepoints. This works with " \ |
0 | 632 "GuaranteedSafepointInterval") \ |
633 \ | |
634 product_pd(bool, BackgroundCompilation, \ | |
635 "A thread requesting compilation is not blocked during " \ | |
636 "compilation") \ | |
637 \ | |
638 product(bool, PrintVMQWaitTime, false, \ | |
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639 "Print out the waiting time in VM operation queue") \ |
0 | 640 \ |
641 develop(bool, NoYieldsInMicrolock, false, \ | |
642 "Disable yields in microlock") \ | |
643 \ | |
644 develop(bool, TraceOopMapGeneration, false, \ | |
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645 "Show OopMapGeneration") \ |
0 | 646 \ |
647 product(bool, MethodFlushing, true, \ | |
648 "Reclamation of zombie and not-entrant methods") \ | |
649 \ | |
650 develop(bool, VerifyStack, false, \ | |
651 "Verify stack of each thread when it is entering a runtime call") \ | |
652 \ | |
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653 diagnostic(bool, ForceUnreachable, false, \ |
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654 "Make all non code cache addresses to be unreachable by " \ |
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655 "forcing use of 64bit literal fixups") \ |
0 | 656 \ |
657 notproduct(bool, StressDerivedPointers, false, \ | |
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658 "Force scavenge when a derived pointer is detected on stack " \ |
0 | 659 "after rtm call") \ |
660 \ | |
661 develop(bool, TraceDerivedPointers, false, \ | |
662 "Trace traversal of derived pointers on stack") \ | |
663 \ | |
664 notproduct(bool, TraceCodeBlobStacks, false, \ | |
665 "Trace stack-walk of codeblobs") \ | |
666 \ | |
667 product(bool, PrintJNIResolving, false, \ | |
668 "Used to implement -v:jni") \ | |
669 \ | |
670 notproduct(bool, PrintRewrites, false, \ | |
671 "Print methods that are being rewritten") \ | |
672 \ | |
673 product(bool, UseInlineCaches, true, \ | |
674 "Use Inline Caches for virtual calls ") \ | |
675 \ | |
676 develop(bool, InlineArrayCopy, true, \ | |
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677 "Inline arraycopy native that is known to be part of " \ |
0 | 678 "base library DLL") \ |
679 \ | |
680 develop(bool, InlineObjectHash, true, \ | |
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681 "Inline Object::hashCode() native that is known to be part " \ |
0 | 682 "of base library DLL") \ |
683 \ | |
684 develop(bool, InlineNatives, true, \ | |
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685 "Inline natives that are known to be part of base library DLL") \ |
0 | 686 \ |
687 develop(bool, InlineMathNatives, true, \ | |
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688 "Inline SinD, CosD, etc.") \ |
0 | 689 \ |
690 develop(bool, InlineClassNatives, true, \ | |
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691 "Inline Class.isInstance, etc") \ |
0 | 692 \ |
693 develop(bool, InlineThreadNatives, true, \ | |
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694 "Inline Thread.currentThread, etc") \ |
0 | 695 \ |
696 develop(bool, InlineUnsafeOps, true, \ | |
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697 "Inline memory ops (native methods) from sun.misc.Unsafe") \ |
0 | 698 \ |
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699 product(bool, CriticalJNINatives, true, \ |
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700 "Check for critical JNI entry points") \ |
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701 \ |
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702 notproduct(bool, StressCriticalJNINatives, false, \ |
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703 "Exercise register saving code in critical natives") \ |
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704 \ |
681 | 705 product(bool, UseSSE42Intrinsics, false, \ |
706 "SSE4.2 versions of intrinsics") \ | |
707 \ | |
6894 | 708 product(bool, UseAESIntrinsics, false, \ |
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709 "Use intrinsics for AES versions of crypto") \ |
6894 | 710 \ |
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711 product(bool, UseSHA1Intrinsics, false, \ |
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712 "Use intrinsics for SHA-1 crypto hash function") \ |
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713 \ |
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714 product(bool, UseSHA256Intrinsics, false, \ |
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715 "Use intrinsics for SHA-224 and SHA-256 crypto hash functions") \ |
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716 \ |
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717 product(bool, UseSHA512Intrinsics, false, \ |
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718 "Use intrinsics for SHA-384 and SHA-512 crypto hash functions") \ |
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719 \ |
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720 product(bool, UseCRC32Intrinsics, false, \ |
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721 "use intrinsics for java.util.zip.CRC32") \ |
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722 \ |
0 | 723 develop(bool, TraceCallFixup, false, \ |
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724 "Trace all call fixups") \ |
0 | 725 \ |
726 develop(bool, DeoptimizeALot, false, \ | |
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727 "Deoptimize at every exit from the runtime system") \ |
0 | 728 \ |
434 | 729 notproduct(ccstrlist, DeoptimizeOnlyAt, "", \ |
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730 "A comma separated list of bcis to deoptimize at") \ |
0 | 731 \ |
732 product(bool, DeoptimizeRandom, false, \ | |
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733 "Deoptimize random frames on random exit from the runtime system")\ |
0 | 734 \ |
735 notproduct(bool, ZombieALot, false, \ | |
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736 "Create zombies (non-entrant) at exit from the runtime system") \ |
0 | 737 \ |
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738 product(bool, UnlinkSymbolsALot, false, \ |
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739 "Unlink unreferenced symbols from the symbol table at safepoints")\ |
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740 \ |
0 | 741 notproduct(bool, WalkStackALot, false, \ |
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742 "Trace stack (no print) at every exit from the runtime system") \ |
0 | 743 \ |
4006 | 744 product(bool, Debugging, false, \ |
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745 "Set when executing debug methods in debug.cpp " \ |
0 | 746 "(to prevent triggering assertions)") \ |
747 \ | |
748 notproduct(bool, StrictSafepointChecks, trueInDebug, \ | |
749 "Enable strict checks that safepoints cannot happen for threads " \ | |
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750 "that use No_Safepoint_Verifier") \ |
0 | 751 \ |
752 notproduct(bool, VerifyLastFrame, false, \ | |
753 "Verify oops on last frame on entry to VM") \ | |
754 \ | |
755 develop(bool, TraceHandleAllocation, false, \ | |
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756 "Print out warnings when suspiciously many handles are allocated")\ |
0 | 757 \ |
758 product(bool, UseCompilerSafepoints, true, \ | |
759 "Stop at safepoints in compiled code") \ | |
760 \ | |
761 product(bool, FailOverToOldVerifier, true, \ | |
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762 "Fail over to old verifier when split verifier fails") \ |
0 | 763 \ |
764 develop(bool, ShowSafepointMsgs, false, \ | |
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765 "Show message about safepoint synchronization") \ |
0 | 766 \ |
767 product(bool, SafepointTimeout, false, \ | |
768 "Time out and warn or fail after SafepointTimeoutDelay " \ | |
769 "milliseconds if failed to reach safepoint") \ | |
770 \ | |
771 develop(bool, DieOnSafepointTimeout, false, \ | |
772 "Die upon failure to reach safepoint (see SafepointTimeout)") \ | |
773 \ | |
774 /* 50 retries * (5 * current_retry_count) millis = ~6.375 seconds */ \ | |
775 /* typically, at most a few retries are needed */ \ | |
776 product(intx, SuspendRetryCount, 50, \ | |
777 "Maximum retry count for an external suspend request") \ | |
778 \ | |
779 product(intx, SuspendRetryDelay, 5, \ | |
780 "Milliseconds to delay per retry (* current_retry_count)") \ | |
781 \ | |
782 product(bool, AssertOnSuspendWaitFailure, false, \ | |
783 "Assert/Guarantee on external suspend wait failure") \ | |
784 \ | |
785 product(bool, TraceSuspendWaitFailures, false, \ | |
786 "Trace external suspend wait failures") \ | |
787 \ | |
788 product(bool, MaxFDLimit, true, \ | |
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789 "Bump the number of file descriptors to maximum in Solaris") \ |
0 | 790 \ |
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791 diagnostic(bool, LogEvents, true, \ |
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792 "Enable the various ring buffer event logs") \ |
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793 \ |
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794 diagnostic(uintx, LogEventsBufferEntries, 10, \ |
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795 "Number of ring buffer event logs") \ |
0 | 796 \ |
797 product(bool, BytecodeVerificationRemote, true, \ | |
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798 "Enable the Java bytecode verifier for remote classes") \ |
0 | 799 \ |
800 product(bool, BytecodeVerificationLocal, false, \ | |
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801 "Enable the Java bytecode verifier for local classes") \ |
0 | 802 \ |
803 develop(bool, ForceFloatExceptions, trueInDebug, \ | |
804 "Force exceptions on FP stack under/overflow") \ | |
805 \ | |
806 develop(bool, VerifyStackAtCalls, false, \ | |
807 "Verify that the stack pointer is unchanged after calls") \ | |
808 \ | |
809 develop(bool, TraceJavaAssertions, false, \ | |
810 "Trace java language assertions") \ | |
811 \ | |
812 notproduct(bool, CheckAssertionStatusDirectives, false, \ | |
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813 "Temporary - see javaClasses.cpp") \ |
0 | 814 \ |
815 notproduct(bool, PrintMallocFree, false, \ | |
816 "Trace calls to C heap malloc/free allocation") \ | |
817 \ | |
1681
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818 product(bool, PrintOopAddress, false, \ |
0 | 819 "Always print the location of the oop") \ |
820 \ | |
821 notproduct(bool, VerifyCodeCacheOften, false, \ | |
822 "Verify compiled-code cache often") \ | |
823 \ | |
824 develop(bool, ZapDeadCompiledLocals, false, \ | |
825 "Zap dead locals in compiler frames") \ | |
826 \ | |
827 notproduct(bool, ZapDeadLocalsOld, false, \ | |
828 "Zap dead locals (old version, zaps all frames when " \ | |
829 "entering the VM") \ | |
830 \ | |
831 notproduct(bool, CheckOopishValues, false, \ | |
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832 "Warn if value contains oop (requires ZapDeadLocals)") \ |
0 | 833 \ |
834 develop(bool, UseMallocOnly, false, \ | |
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835 "Use only malloc/free for allocation (no resource area/arena)") \ |
0 | 836 \ |
837 develop(bool, PrintMalloc, false, \ | |
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838 "Print all malloc/free calls") \ |
0 | 839 \ |
2250 | 840 develop(bool, PrintMallocStatistics, false, \ |
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841 "Print malloc/free statistics") \ |
2250 | 842 \ |
0 | 843 develop(bool, ZapResourceArea, trueInDebug, \ |
844 "Zap freed resource/arena space with 0xABABABAB") \ | |
845 \ | |
846 notproduct(bool, ZapVMHandleArea, trueInDebug, \ | |
847 "Zap freed VM handle space with 0xBCBCBCBC") \ | |
848 \ | |
849 develop(bool, ZapJNIHandleArea, trueInDebug, \ | |
850 "Zap freed JNI handle space with 0xFEFEFEFE") \ | |
851 \ | |
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852 notproduct(bool, ZapStackSegments, trueInDebug, \ |
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853 "Zap allocated/freed stack segments with 0xFADFADED") \ |
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854 \ |
263
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855 develop(bool, ZapUnusedHeapArea, trueInDebug, \ |
0 | 856 "Zap unused heap space with 0xBAADBABE") \ |
857 \ | |
263
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858 develop(bool, TraceZapUnusedHeapArea, false, \ |
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859 "Trace zapping of unused heap space") \ |
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860 \ |
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861 develop(bool, CheckZapUnusedHeapArea, false, \ |
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862 "Check zapping of unused heap space") \ |
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863 \ |
481
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864 develop(bool, ZapFillerObjects, trueInDebug, \ |
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865 "Zap filler objects with 0xDEAFBABE") \ |
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866 \ |
0 | 867 develop(bool, PrintVMMessages, true, \ |
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868 "Print VM messages on console") \ |
0 | 869 \ |
870 product(bool, PrintGCApplicationConcurrentTime, false, \ | |
871 "Print the time the application has been running") \ | |
872 \ | |
873 product(bool, PrintGCApplicationStoppedTime, false, \ | |
874 "Print the time the application has been stopped") \ | |
875 \ | |
6605 | 876 diagnostic(bool, VerboseVerification, false, \ |
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877 "Display detailed verification details") \ |
6605 | 878 \ |
1490
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879 notproduct(uintx, ErrorHandlerTest, 0, \ |
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880 "If > 0, provokes an error after VM initialization; the value " \ |
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881 "determines which error to provoke. See test_error_handler() " \ |
1490
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882 "in debug.cpp.") \ |
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883 \ |
0 | 884 develop(bool, Verbose, false, \ |
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885 "Print additional debugging information from other modes") \ |
0 | 886 \ |
887 develop(bool, PrintMiscellaneous, false, \ | |
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888 "Print uncategorized debugging information (requires +Verbose)") \ |
0 | 889 \ |
890 develop(bool, WizardMode, false, \ | |
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891 "Print much more debugging information") \ |
0 | 892 \ |
893 product(bool, ShowMessageBoxOnError, false, \ | |
894 "Keep process alive on VM fatal error") \ | |
895 \ | |
2204
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896 product(bool, CreateMinidumpOnCrash, false, \ |
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|
897 "Create minidump on VM fatal error") \ |
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|
898 \ |
0 | 899 product_pd(bool, UseOSErrorReporting, \ |
900 "Let VM fatal error propagate to the OS (ie. WER on Windows)") \ | |
901 \ | |
902 product(bool, SuppressFatalErrorMessage, false, \ | |
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903 "Report NO fatal error message (avoid deadlock)") \ |
0 | 904 \ |
905 product(ccstrlist, OnError, "", \ | |
906 "Run user-defined commands on fatal error; see VMError.cpp " \ | |
907 "for examples") \ | |
908 \ | |
909 product(ccstrlist, OnOutOfMemoryError, "", \ | |
910 "Run user-defined commands on first java.lang.OutOfMemoryError") \ | |
911 \ | |
615
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|
912 manageable(bool, HeapDumpBeforeFullGC, false, \ |
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913 "Dump heap to file before any major stop-the-world GC") \ |
615
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|
914 \ |
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|
915 manageable(bool, HeapDumpAfterFullGC, false, \ |
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916 "Dump heap to file after any major stop-the-world GC") \ |
615
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|
917 \ |
0 | 918 manageable(bool, HeapDumpOnOutOfMemoryError, false, \ |
919 "Dump heap to file when java.lang.OutOfMemoryError is thrown") \ | |
920 \ | |
921 manageable(ccstr, HeapDumpPath, NULL, \ | |
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922 "When HeapDumpOnOutOfMemoryError is on, the path (filename or " \ |
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923 "directory) of the dump file (defaults to java_pid<pid>.hprof " \ |
0 | 924 "in the working directory)") \ |
925 \ | |
926 develop(uintx, SegmentedHeapDumpThreshold, 2*G, \ | |
927 "Generate a segmented heap dump (JAVA PROFILE 1.0.2 format) " \ | |
928 "when the heap usage is larger than this") \ | |
929 \ | |
930 develop(uintx, HeapDumpSegmentSize, 1*G, \ | |
931 "Approximate segment size when generating a segmented heap dump") \ | |
932 \ | |
933 develop(bool, BreakAtWarning, false, \ | |
934 "Execute breakpoint upon encountering VM warning") \ | |
935 \ | |
936 develop(bool, TraceVMOperation, false, \ | |
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937 "Trace VM operations") \ |
0 | 938 \ |
939 develop(bool, UseFakeTimers, false, \ | |
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940 "Tell whether the VM should use system time or a fake timer") \ |
0 | 941 \ |
6197 | 942 product(ccstr, NativeMemoryTracking, "off", \ |
943 "Native memory tracking options") \ | |
944 \ | |
6770
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945 diagnostic(bool, PrintNMTStatistics, false, \ |
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946 "Print native memory tracking summary data if it is on") \ |
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947 \ |
0 | 948 diagnostic(bool, LogCompilation, false, \ |
12257
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|
949 "Log compilation activity in detail to LogFile") \ |
0 | 950 \ |
951 product(bool, PrintCompilation, false, \ | |
952 "Print compilations") \ | |
953 \ | |
954 diagnostic(bool, TraceNMethodInstalls, false, \ | |
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955 "Trace nmethod installation") \ |
0 | 956 \ |
4119
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957 diagnostic(intx, ScavengeRootsInCode, 2, \ |
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958 "0: do not allow scavengable oops in the code cache; " \ |
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959 "1: allow scavenging from the code cache; " \ |
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960 "2: emit as many constants as the compiler can see") \ |
989
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961 \ |
0 | 962 product(bool, AlwaysRestoreFPU, false, \ |
963 "Restore the FPU control word after every JNI call (expensive)") \ | |
964 \ | |
4064
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965 diagnostic(bool, PrintCompilation2, false, \ |
0 | 966 "Print additional statistics per compilation") \ |
967 \ | |
100
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968 diagnostic(bool, PrintAdapterHandlers, false, \ |
0 | 969 "Print code generated for i2c/c2i adapters") \ |
970 \ | |
6266
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971 diagnostic(bool, VerifyAdapterCalls, trueInDebug, \ |
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972 "Verify that i2c/c2i adapters are called properly") \ |
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973 \ |
1207
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|
974 develop(bool, VerifyAdapterSharing, false, \ |
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975 "Verify that the code for shared adapters is the equivalent") \ |
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976 \ |
100
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977 diagnostic(bool, PrintAssembly, false, \ |
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|
978 "Print assembly code (using external disassembler.so)") \ |
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979 \ |
370
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980 diagnostic(ccstr, PrintAssemblyOptions, NULL, \ |
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981 "Print options string passed to disassembler.so") \ |
100
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982 \ |
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983 diagnostic(bool, PrintNMethods, false, \ |
0 | 984 "Print assembly code for nmethods when generated") \ |
985 \ | |
100
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986 diagnostic(bool, PrintNativeNMethods, false, \ |
0 | 987 "Print assembly code for native nmethods when generated") \ |
988 \ | |
989 develop(bool, PrintDebugInfo, false, \ | |
990 "Print debug information for all nmethods when generated") \ | |
991 \ | |
992 develop(bool, PrintRelocations, false, \ | |
993 "Print relocation information for all nmethods when generated") \ | |
994 \ | |
995 develop(bool, PrintDependencies, false, \ | |
996 "Print dependency information for all nmethods when generated") \ | |
997 \ | |
998 develop(bool, PrintExceptionHandlers, false, \ | |
999 "Print exception handler tables for all nmethods when generated") \ | |
1000 \ | |
7428
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1001 develop(bool, StressCompiledExceptionHandlers, false, \ |
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1002 "Exercise compiled exception handlers") \ |
7428
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1003 \ |
0 | 1004 develop(bool, InterceptOSException, false, \ |
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|
1005 "Start debugger when an implicit OS (e.g. NULL) " \ |
0 | 1006 "exception happens") \ |
1007 \ | |
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1008 product(bool, PrintCodeCache, false, \ |
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1009 "Print the code cache memory usage when exiting") \ |
0 | 1010 \ |
1011 develop(bool, PrintCodeCache2, false, \ | |
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1012 "Print detailed usage information on the code cache when exiting")\ |
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1013 \ |
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1014 product(bool, PrintCodeCacheOnCompilation, false, \ |
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1015 "Print the code cache memory usage each time a method is " \ |
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1016 "compiled") \ |
0 | 1017 \ |
100
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1018 diagnostic(bool, PrintStubCode, false, \ |
0 | 1019 "Print generated stub code") \ |
1020 \ | |
1021 product(bool, StackTraceInThrowable, true, \ | |
1022 "Collect backtrace in throwable when exception happens") \ | |
1023 \ | |
1024 product(bool, OmitStackTraceInFastThrow, true, \ | |
1025 "Omit backtraces for some 'hot' exceptions in optimized code") \ | |
1026 \ | |
1027 product(bool, ProfilerPrintByteCodeStatistics, false, \ | |
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1028 "Print bytecode statistics when dumping profiler output") \ |
0 | 1029 \ |
1030 product(bool, ProfilerRecordPC, false, \ | |
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1031 "Collect ticks for each 16 byte interval of compiled code") \ |
0 | 1032 \ |
1064 | 1033 product(bool, ProfileVM, false, \ |
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1034 "Profile ticks that fall within VM (either in the VM Thread " \ |
0 | 1035 "or VM code called through stubs)") \ |
1036 \ | |
1037 product(bool, ProfileIntervals, false, \ | |
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1038 "Print profiles for each interval (see ProfileIntervalsTicks)") \ |
0 | 1039 \ |
1040 notproduct(bool, ProfilerCheckIntervals, false, \ | |
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1041 "Collect and print information on spacing of profiler ticks") \ |
0 | 1042 \ |
1043 develop(bool, PrintJVMWarnings, false, \ | |
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1044 "Print warnings for unimplemented JVM functions") \ |
0 | 1045 \ |
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1046 product(bool, PrintWarnings, true, \ |
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1047 "Print JVM warnings to output stream") \ |
1870
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1048 \ |
0 | 1049 notproduct(uintx, WarnOnStalledSpinLock, 0, \ |
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1050 "Print warnings for stalled SpinLocks") \ |
0 | 1051 \ |
1052 product(bool, RegisterFinalizersAtInit, true, \ | |
1053 "Register finalizable objects at end of Object.<init> or " \ | |
1064 | 1054 "after allocation") \ |
0 | 1055 \ |
1056 develop(bool, RegisterReferences, true, \ | |
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1057 "Tell whether the VM should register soft/weak/final/phantom " \ |
0 | 1058 "references") \ |
1059 \ | |
1060 develop(bool, IgnoreRewrites, false, \ | |
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1061 "Suppress rewrites of bytecodes in the oopmap generator. " \ |
0 | 1062 "This is unsafe!") \ |
1063 \ | |
1064 develop(bool, PrintCodeCacheExtension, false, \ | |
1065 "Print extension of code cache") \ | |
1066 \ | |
1067 develop(bool, UsePrivilegedStack, true, \ | |
1068 "Enable the security JVM functions") \ | |
1069 \ | |
1070 develop(bool, ProtectionDomainVerification, true, \ | |
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1071 "Verify protection domain before resolution in system dictionary")\ |
0 | 1072 \ |
1073 product(bool, ClassUnloading, true, \ | |
1074 "Do unloading of classes") \ | |
1075 \ | |
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1076 product(bool, ClassUnloadingWithConcurrentMark, true, \ |
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1077 "Do unloading of classes with a concurrent marking cycle") \ |
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1078 \ |
0 | 1079 develop(bool, DisableStartThread, false, \ |
1080 "Disable starting of additional Java threads " \ | |
1081 "(for debugging only)") \ | |
1082 \ | |
1083 develop(bool, MemProfiling, false, \ | |
1084 "Write memory usage profiling to log file") \ | |
1085 \ | |
1086 notproduct(bool, PrintSystemDictionaryAtExit, false, \ | |
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1087 "Print the system dictionary at exit") \ |
0 | 1088 \ |
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1089 experimental(intx, PredictedLoadedClassCount, 0, \ |
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1090 "Experimental: Tune loaded class cache starting size") \ |
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1091 \ |
0 | 1092 diagnostic(bool, UnsyncloadClass, false, \ |
514 | 1093 "Unstable: VM calls loadClass unsynchronized. Custom " \ |
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1094 "class loader must call VM synchronized for findClass " \ |
514 | 1095 "and defineClass.") \ |
1096 \ | |
1097 product(bool, AlwaysLockClassLoader, false, \ | |
1098 "Require the VM to acquire the class loader lock before calling " \ | |
1099 "loadClass() even for class loaders registering " \ | |
1064 | 1100 "as parallel capable") \ |
514 | 1101 \ |
1102 product(bool, AllowParallelDefineClass, false, \ | |
1103 "Allow parallel defineClass requests for class loaders " \ | |
1064 | 1104 "registering as parallel capable") \ |
514 | 1105 \ |
1106 product(bool, MustCallLoadClassInternal, false, \ | |
1064 | 1107 "Call loadClassInternal() rather than loadClass()") \ |
0 | 1108 \ |
1109 product_pd(bool, DontYieldALot, \ | |
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1110 "Throw away obvious excess yield calls (for Solaris only)") \ |
0 | 1111 \ |
1112 product_pd(bool, ConvertSleepToYield, \ | |
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1113 "Convert sleep(0) to thread yield " \ |
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1114 "(may be off for Solaris to improve GUI)") \ |
0 | 1115 \ |
1116 product(bool, ConvertYieldToSleep, false, \ | |
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1117 "Convert yield to a sleep of MinSleepInterval to simulate Win32 " \ |
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1118 "behavior (Solaris only)") \ |
0 | 1119 \ |
1120 product(bool, UseBoundThreads, true, \ | |
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1121 "Bind user level threads to kernel threads (for Solaris only)") \ |
0 | 1122 \ |
1123 develop(bool, UseDetachedThreads, true, \ | |
1124 "Use detached threads that are recycled upon termination " \ | |
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1125 "(for Solaris only)") \ |
0 | 1126 \ |
1127 product(bool, UseLWPSynchronization, true, \ | |
1128 "Use LWP-based instead of libthread-based synchronization " \ | |
1129 "(SPARC only)") \ | |
1130 \ | |
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1131 product(ccstr, SyncKnobs, NULL, \ |
0 | 1132 "(Unstable) Various monitor synchronization tunables") \ |
1133 \ | |
1134 product(intx, EmitSync, 0, \ | |
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1135 "(Unsafe, Unstable) " \ |
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1136 "Control emission of inline sync fast-path code") \ |
0 | 1137 \ |
1587 | 1138 product(intx, MonitorBound, 0, "Bound Monitor population") \ |
1139 \ | |
1140 product(bool, MonitorInUseLists, false, "Track Monitors for Deflation") \ | |
1141 \ | |
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1142 product(intx, SyncFlags, 0, "(Unsafe, Unstable) Experimental Sync flags") \ |
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1143 \ |
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1144 product(intx, SyncVerbose, 0, "(Unstable)") \ |
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1145 \ |
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1146 product(intx, ClearFPUAtPark, 0, "(Unsafe, Unstable)") \ |
0 | 1147 \ |
7587 | 1148 product(intx, hashCode, 5, \ |
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1149 "(Unstable) select hashCode generation algorithm") \ |
0 | 1150 \ |
1151 product(intx, WorkAroundNPTLTimedWaitHang, 1, \ | |
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1152 "(Unstable, Linux-specific) " \ |
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1153 "avoid NPTL-FUTEX hang pthread_cond_timedwait") \ |
0 | 1154 \ |
1064 | 1155 product(bool, FilterSpuriousWakeups, true, \ |
1156 "Prevent spurious or premature wakeups from object.wait " \ | |
1157 "(Solaris only)") \ | |
0 | 1158 \ |
18077 | 1159 experimental(intx, NativeMonitorTimeout, -1, "(Unstable)") \ |
1160 \ | |
1161 experimental(intx, NativeMonitorFlags, 0, "(Unstable)") \ | |
1162 \ | |
1163 experimental(intx, NativeMonitorSpinLimit, 20, "(Unstable)") \ | |
0 | 1164 \ |
1165 develop(bool, UsePthreads, false, \ | |
1166 "Use pthread-based instead of libthread-based synchronization " \ | |
1167 "(SPARC only)") \ | |
1168 \ | |
1169 product(bool, AdjustConcurrency, false, \ | |
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1170 "Call thr_setconcurrency at thread creation time to avoid " \ |
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1171 "LWP starvation on MP systems (for Solaris Only)") \ |
0 | 1172 \ |
1173 product(bool, ReduceSignalUsage, false, \ | |
1174 "Reduce the use of OS signals in Java and/or the VM") \ | |
1175 \ | |
1176 develop_pd(bool, ShareVtableStubs, \ | |
1177 "Share vtable stubs (smaller code but worse branch prediction") \ | |
1178 \ | |
1179 develop(bool, LoadLineNumberTables, true, \ | |
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1180 "Tell whether the class file parser loads line number tables") \ |
0 | 1181 \ |
1182 develop(bool, LoadLocalVariableTables, true, \ | |
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1183 "Tell whether the class file parser loads local variable tables") \ |
0 | 1184 \ |
1185 develop(bool, LoadLocalVariableTypeTables, true, \ | |
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1186 "Tell whether the class file parser loads local variable type" \ |
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1187 "tables") \ |
0 | 1188 \ |
1189 product(bool, AllowUserSignalHandlers, false, \ | |
1190 "Do not complain if the application installs signal handlers " \ | |
1191 "(Solaris & Linux only)") \ | |
1192 \ | |
1193 product(bool, UseSignalChaining, true, \ | |
1194 "Use signal-chaining to invoke signal handlers installed " \ | |
1195 "by the application (Solaris & Linux only)") \ | |
1196 \ | |
1197 product(bool, UseAltSigs, false, \ | |
1198 "Use alternate signals instead of SIGUSR1 & SIGUSR2 for VM " \ | |
1064 | 1199 "internal signals (Solaris only)") \ |
0 | 1200 \ |
1201 product(bool, AllowJNIEnvProxy, false, \ | |
1202 "Allow JNIEnv proxies for jdbx") \ | |
1203 \ | |
1204 product(bool, JNIDetachReleasesMonitors, true, \ | |
1205 "JNI DetachCurrentThread releases monitors owned by thread") \ | |
1206 \ | |
1207 product(bool, RestoreMXCSROnJNICalls, false, \ | |
1208 "Restore MXCSR when returning from JNI calls") \ | |
1209 \ | |
1210 product(bool, CheckJNICalls, false, \ | |
1211 "Verify all arguments to JNI calls") \ | |
1212 \ | |
1213 product(bool, UseFastJNIAccessors, true, \ | |
1214 "Use optimized versions of Get<Primitive>Field") \ | |
1215 \ | |
20324
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1216 product(intx, MaxJNILocalCapacity, 65536, \ |
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1217 "Maximum allowable local JNI handle capacity to " \ |
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1218 "EnsureLocalCapacity() and PushLocalFrame(), " \ |
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1219 "where <= 0 is unlimited, default: 65536") \ |
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1220 \ |
0 | 1221 product(bool, EagerXrunInit, false, \ |
1222 "Eagerly initialize -Xrun libraries; allows startup profiling, " \ | |
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1223 "but not all -Xrun libraries may support the state of the VM " \ |
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1224 "at this time") \ |
0 | 1225 \ |
1226 product(bool, PreserveAllAnnotations, false, \ | |
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1227 "Preserve RuntimeInvisibleAnnotations as well " \ |
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1228 "as RuntimeVisibleAnnotations") \ |
0 | 1229 \ |
1230 develop(uintx, PreallocatedOutOfMemoryErrorCount, 4, \ | |
1231 "Number of OutOfMemoryErrors preallocated with backtrace") \ | |
1232 \ | |
1233 product(bool, LazyBootClassLoader, true, \ | |
1234 "Enable/disable lazy opening of boot class path entries") \ | |
1235 \ | |
405 | 1236 product(bool, UseXMMForArrayCopy, false, \ |
1237 "Use SSE2 MOVQ instruction for Arraycopy") \ | |
1238 \ | |
0 | 1239 product(intx, FieldsAllocationStyle, 1, \ |
1366
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1240 "0 - type based with oops first, 1 - with oops last, " \ |
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1241 "2 - oops in super and sub classes are together") \ |
0 | 1242 \ |
1243 product(bool, CompactFields, true, \ | |
1244 "Allocate nonstatic fields in gaps between previous fields") \ | |
1245 \ | |
7587 | 1246 notproduct(bool, PrintFieldLayout, false, \ |
1247 "Print field layout for each class") \ | |
1248 \ | |
1249 product(intx, ContendedPaddingWidth, 128, \ | |
1250 "How many bytes to pad the fields/classes marked @Contended with")\ | |
1251 \ | |
1252 product(bool, EnableContended, true, \ | |
1253 "Enable @Contended annotation support") \ | |
1254 \ | |
1255 product(bool, RestrictContended, true, \ | |
1256 "Restrict @Contended to trusted classes") \ | |
1257 \ | |
0 | 1258 product(bool, UseBiasedLocking, true, \ |
1259 "Enable biased locking in JVM") \ | |
1260 \ | |
1261 product(intx, BiasedLockingStartupDelay, 4000, \ | |
1262 "Number of milliseconds to wait before enabling biased locking") \ | |
1263 \ | |
1264 diagnostic(bool, PrintBiasedLockingStatistics, false, \ | |
1265 "Print statistics of biased locking in JVM") \ | |
1266 \ | |
1267 product(intx, BiasedLockingBulkRebiasThreshold, 20, \ | |
1268 "Threshold of number of revocations per type to try to " \ | |
1269 "rebias all objects in the heap of that type") \ | |
1270 \ | |
1271 product(intx, BiasedLockingBulkRevokeThreshold, 40, \ | |
1272 "Threshold of number of revocations per type to permanently " \ | |
1273 "revoke biases of all objects in the heap of that type") \ | |
1274 \ | |
1275 product(intx, BiasedLockingDecayTime, 25000, \ | |
1276 "Decay time (in milliseconds) to re-enable bulk rebiasing of a " \ | |
1277 "type after previous bulk rebias") \ | |
1278 \ | |
1279 /* tracing */ \ | |
1280 \ | |
1281 notproduct(bool, TraceRuntimeCalls, false, \ | |
1282 "Trace run-time calls") \ | |
1283 \ | |
1284 develop(bool, TraceJNICalls, false, \ | |
1285 "Trace JNI calls") \ | |
1286 \ | |
17665
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1287 develop(bool, StressRewriter, false, \ |
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1288 "Stress linktime bytecode rewriting") \ |
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1289 \ |
0 | 1290 notproduct(bool, TraceJVMCalls, false, \ |
1291 "Trace JVM calls") \ | |
1292 \ | |
370
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|
1293 product(ccstr, TraceJVMTI, NULL, \ |
0 | 1294 "Trace flags for JVMTI functions and events") \ |
1295 \ | |
1296 /* This option can change an EMCP method into an obsolete method. */ \ | |
1297 /* This can affect tests that except specific methods to be EMCP. */ \ | |
1298 /* This option should be used with caution. */ \ | |
1299 product(bool, StressLdcRewrite, false, \ | |
1300 "Force ldc -> ldc_w rewrite during RedefineClasses") \ | |
1301 \ | |
1302 product(intx, TraceRedefineClasses, 0, \ | |
1303 "Trace level for JVMTI RedefineClasses") \ | |
1304 \ | |
1574 | 1305 develop(bool, StressMethodComparator, false, \ |
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1306 "Run the MethodComparator on all loaded methods") \ |
1574 | 1307 \ |
0 | 1308 /* change to false by default sometime after Mustang */ \ |
1309 product(bool, VerifyMergedCPBytecodes, true, \ | |
1310 "Verify bytecodes after RedefineClasses constant pool merging") \ | |
1311 \ | |
1312 develop(bool, TraceJNIHandleAllocation, false, \ | |
1313 "Trace allocation/deallocation of JNI handle blocks") \ | |
1314 \ | |
1315 develop(bool, TraceThreadEvents, false, \ | |
1316 "Trace all thread events") \ | |
1317 \ | |
1318 develop(bool, TraceBytecodes, false, \ | |
1319 "Trace bytecode execution") \ | |
1320 \ | |
1321 develop(bool, TraceClassInitialization, false, \ | |
1322 "Trace class initialization") \ | |
1323 \ | |
1324 develop(bool, TraceExceptions, false, \ | |
1325 "Trace exceptions") \ | |
1326 \ | |
1327 develop(bool, TraceICs, false, \ | |
1328 "Trace inline cache changes") \ | |
1329 \ | |
1330 notproduct(bool, TraceInvocationCounterOverflow, false, \ | |
1331 "Trace method invocation counter overflow") \ | |
1332 \ | |
1333 develop(bool, TraceInlineCacheClearing, false, \ | |
1334 "Trace clearing of inline caches in nmethods") \ | |
1335 \ | |
1336 develop(bool, TraceDependencies, false, \ | |
1337 "Trace dependencies") \ | |
1338 \ | |
1339 develop(bool, VerifyDependencies, trueInDebug, \ | |
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1340 "Exercise and verify the compilation dependency mechanism") \ |
0 | 1341 \ |
1342 develop(bool, TraceNewOopMapGeneration, false, \ | |
1343 "Trace OopMapGeneration") \ | |
1344 \ | |
1345 develop(bool, TraceNewOopMapGenerationDetailed, false, \ | |
1346 "Trace OopMapGeneration: print detailed cell states") \ | |
1347 \ | |
1348 develop(bool, TimeOopMap, false, \ | |
1349 "Time calls to GenerateOopMap::compute_map() in sum") \ | |
1350 \ | |
1351 develop(bool, TimeOopMap2, false, \ | |
1352 "Time calls to GenerateOopMap::compute_map() individually") \ | |
1353 \ | |
1354 develop(bool, TraceMonitorMismatch, false, \ | |
1355 "Trace monitor matching failures during OopMapGeneration") \ | |
1356 \ | |
1357 develop(bool, TraceOopMapRewrites, false, \ | |
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1358 "Trace rewriting of method oops during oop map generation") \ |
0 | 1359 \ |
1360 develop(bool, TraceSafepoint, false, \ | |
1361 "Trace safepoint operations") \ | |
1362 \ | |
1363 develop(bool, TraceICBuffer, false, \ | |
1364 "Trace usage of IC buffer") \ | |
1365 \ | |
1366 develop(bool, TraceCompiledIC, false, \ | |
1367 "Trace changes of compiled IC") \ | |
1368 \ | |
1369 notproduct(bool, TraceZapDeadLocals, false, \ | |
1370 "Trace zapping dead locals") \ | |
1371 \ | |
1372 develop(bool, TraceStartupTime, false, \ | |
1373 "Trace setup time") \ | |
1374 \ | |
1375 develop(bool, TraceProtectionDomainVerification, false, \ | |
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1376 "Trace protection domain verification") \ |
0 | 1377 \ |
1378 develop(bool, TraceClearedExceptions, false, \ | |
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1379 "Print when an exception is forcibly cleared") \ |
0 | 1380 \ |
1381 product(bool, TraceClassResolution, false, \ | |
1382 "Trace all constant pool resolutions (for debugging)") \ | |
1383 \ | |
1384 product(bool, TraceBiasedLocking, false, \ | |
1385 "Trace biased locking in JVM") \ | |
1386 \ | |
1387 product(bool, TraceMonitorInflation, false, \ | |
1388 "Trace monitor inflation in JVM") \ | |
1389 \ | |
1390 /* gc */ \ | |
1391 \ | |
1392 product(bool, UseSerialGC, false, \ | |
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1393 "Use the Serial garbage collector") \ |
342
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1394 \ |
1193
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1395 product(bool, UseG1GC, false, \ |
342
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1396 "Use the Garbage-First garbage collector") \ |
0 | 1397 \ |
1398 product(bool, UseParallelGC, false, \ | |
1399 "Use the Parallel Scavenge garbage collector") \ | |
1400 \ | |
1401 product(bool, UseParallelOldGC, false, \ | |
1402 "Use the Parallel Old garbage collector") \ | |
1403 \ | |
1404 product(uintx, HeapMaximumCompactionInterval, 20, \ | |
1405 "How often should we maximally compact the heap (not allowing " \ | |
1406 "any dead space)") \ | |
1407 \ | |
1408 product(uintx, HeapFirstMaximumCompactionCount, 3, \ | |
1409 "The collection count for the first maximum compaction") \ | |
1410 \ | |
1411 product(bool, UseMaximumCompactionOnSystemGC, true, \ | |
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1412 "Use maximum compaction in the Parallel Old garbage collector " \ |
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1413 "for a system GC") \ |
0 | 1414 \ |
1415 product(uintx, ParallelOldDeadWoodLimiterMean, 50, \ | |
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1416 "The mean used by the parallel compact dead wood " \ |
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1417 "limiter (a number between 0-100)") \ |
0 | 1418 \ |
1419 product(uintx, ParallelOldDeadWoodLimiterStdDev, 80, \ | |
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1420 "The standard deviation used by the parallel compact dead wood " \ |
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1421 "limiter (a number between 0-100)") \ |
0 | 1422 \ |
1423 product(uintx, ParallelGCThreads, 0, \ | |
1424 "Number of parallel threads parallel gc will use") \ | |
1425 \ | |
4095
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1426 product(bool, UseDynamicNumberOfGCThreads, false, \ |
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1427 "Dynamically choose the number of parallel threads " \ |
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1428 "parallel gc will use") \ |
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|
1429 \ |
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1430 diagnostic(bool, ForceDynamicNumberOfGCThreads, false, \ |
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1431 "Force dynamic selection of the number of " \ |
4095
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1432 "parallel threads parallel gc will use to aid debugging") \ |
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1433 \ |
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1434 product(uintx, HeapSizePerGCThread, ScaleForWordSize(64*M), \ |
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1435 "Size of heap (bytes) per GC thread used in calculating the " \ |
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1436 "number of GC threads") \ |
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1437 \ |
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1438 product(bool, TraceDynamicGCThreads, false, \ |
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1439 "Trace the dynamic GC thread usage") \ |
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1440 \ |
483
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|
1441 develop(bool, ParallelOldGCSplitALot, false, \ |
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1442 "Provoke splitting (copying data from a young gen space to " \ |
483
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diff
changeset
|
1443 "multiple destination spaces)") \ |
0f773163217d
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481
diff
changeset
|
1444 \ |
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changeset
|
1445 develop(uintx, ParallelOldGCSplitInterval, 3, \ |
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|
1446 "How often to provoke splitting a young gen space") \ |
0 | 1447 \ |
1284 | 1448 product(uintx, ConcGCThreads, 0, \ |
1449 "Number of threads concurrent gc will use") \ | |
342
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1450 \ |
0 | 1451 product(uintx, YoungPLABSize, 4096, \ |
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1452 "Size of young gen promotion LAB's (in HeapWords)") \ |
0 | 1453 \ |
1454 product(uintx, OldPLABSize, 1024, \ | |
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1455 "Size of old gen promotion LAB's (in HeapWords)") \ |
0 | 1456 \ |
1457 product(uintx, GCTaskTimeStampEntries, 200, \ | |
1458 "Number of time stamp entries per gc worker thread") \ | |
1459 \ | |
1460 product(bool, AlwaysTenure, false, \ | |
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1461 "Always tenure objects in eden (ParallelGC only)") \ |
0 | 1462 \ |
1463 product(bool, NeverTenure, false, \ | |
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1464 "Never tenure objects in eden, may tenure on overflow " \ |
1064 | 1465 "(ParallelGC only)") \ |
0 | 1466 \ |
1467 product(bool, ScavengeBeforeFullGC, true, \ | |
1064 | 1468 "Scavenge youngest generation before each full GC, " \ |
1469 "used with UseParallelGC") \ | |
0 | 1470 \ |
1471 develop(bool, ScavengeWithObjectsInToSpace, false, \ | |
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1472 "Allow scavenges to occur when to-space contains objects") \ |
0 | 1473 \ |
1474 product(bool, UseConcMarkSweepGC, false, \ | |
1475 "Use Concurrent Mark-Sweep GC in the old generation") \ | |
1476 \ | |
1477 product(bool, ExplicitGCInvokesConcurrent, false, \ | |
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1478 "A System.gc() request invokes a concurrent collection; " \ |
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1479 "(effective only when UseConcMarkSweepGC)") \ |
0 | 1480 \ |
1481 product(bool, ExplicitGCInvokesConcurrentAndUnloadsClasses, false, \ | |
1064 | 1482 "A System.gc() request invokes a concurrent collection and " \ |
1483 "also unloads classes during such a concurrent gc cycle " \ | |
1484 "(effective only when UseConcMarkSweepGC)") \ | |
0 | 1485 \ |
1520
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|
1486 product(bool, GCLockerInvokesConcurrent, false, \ |
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1487 "The exit of a JNI critical section necessitating a scavenge, " \ |
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1488 "also kicks off a background concurrent collection") \ |
1520
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|
1489 \ |
1991
016a3628c885
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|
1490 product(uintx, GCLockerEdenExpansionPercent, 5, \ |
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1491 "How much the GC can expand the eden by while the GC locker " \ |
1991
016a3628c885
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|
1492 "is active (as a percentage)") \ |
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|
1493 \ |
8853
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|
1494 diagnostic(intx, GCLockerRetryAllocationCount, 2, \ |
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1495 "Number of times to retry allocations when " \ |
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1496 "blocked by the GC locker") \ |
8853
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1497 \ |
0 | 1498 develop(bool, UseCMSAdaptiveFreeLists, true, \ |
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1499 "Use adaptive free lists in the CMS generation") \ |
0 | 1500 \ |
1501 develop(bool, UseAsyncConcMarkSweepGC, true, \ | |
1502 "Use Asynchronous Concurrent Mark-Sweep GC in the old generation")\ | |
1503 \ | |
1504 develop(bool, RotateCMSCollectionTypes, false, \ | |
1505 "Rotate the CMS collections among concurrent and STW") \ | |
1506 \ | |
1507 product(bool, UseCMSBestFit, true, \ | |
1508 "Use CMS best fit allocation strategy") \ | |
1509 \ | |
1510 product(bool, UseCMSCollectionPassing, true, \ | |
1511 "Use passing of collection from background to foreground") \ | |
1512 \ | |
1513 product(bool, UseParNewGC, false, \ | |
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1514 "Use parallel threads in the new generation") \ |
0 | 1515 \ |
1516 product(bool, ParallelGCVerbose, false, \ | |
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1517 "Verbose output for parallel gc") \ |
0 | 1518 \ |
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1519 product(uintx, ParallelGCBufferWastePct, 10, \ |
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1520 "Wasted fraction of parallel allocation buffer") \ |
0 | 1521 \ |
3357
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1522 diagnostic(bool, ParallelGCRetainPLAB, false, \ |
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1523 "Retain parallel allocation buffers across scavenges; " \ |
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1524 "it is disabled because this currently conflicts with " \ |
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1525 "parallel card scanning under certain conditions.") \ |
0 | 1526 \ |
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1527 product(uintx, TargetPLABWastePct, 10, \ |
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1528 "Target wasted space in last buffer as percent of overall " \ |
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1529 "allocation") \ |
0 | 1530 \ |
1531 product(uintx, PLABWeight, 75, \ | |
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1532 "Percentage (0-100) used to weigh the current sample when " \ |
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1533 "computing exponentially decaying average for ResizePLAB") \ |
0 | 1534 \ |
1535 product(bool, ResizePLAB, true, \ | |
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1536 "Dynamically resize (survivor space) promotion LAB's") \ |
0 | 1537 \ |
1538 product(bool, PrintPLAB, false, \ | |
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1539 "Print (survivor space) promotion LAB's sizing decisions") \ |
0 | 1540 \ |
1541 product(intx, ParGCArrayScanChunk, 50, \ | |
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1542 "Scan a subset of object array and push remainder, if array is " \ |
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1543 "bigger than this") \ |
0 | 1544 \ |
695 | 1545 product(bool, ParGCUseLocalOverflow, false, \ |
1546 "Instead of a global overflow list, use local overflow stacks") \ | |
1547 \ | |
679
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|
1548 product(bool, ParGCTrimOverflow, true, \ |
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1549 "Eagerly trim the local overflow lists " \ |
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|
1550 "(when ParGCUseLocalOverflow)") \ |
679
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1551 \ |
534 | 1552 notproduct(bool, ParGCWorkQueueOverflowALot, false, \ |
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1553 "Simulate work queue overflow in ParNew") \ |
534 | 1554 \ |
1555 notproduct(uintx, ParGCWorkQueueOverflowInterval, 1000, \ | |
1064 | 1556 "An `interval' counter that determines how frequently " \ |
1557 "we simulate overflow; a smaller number increases frequency") \ | |
534 | 1558 \ |
1559 product(uintx, ParGCDesiredObjsFromOverflowList, 20, \ | |
0 | 1560 "The desired number of objects to claim from the overflow list") \ |
1561 \ | |
4728
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1562 diagnostic(uintx, ParGCStridesPerThread, 2, \ |
3357
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1563 "The number of strides per worker thread that we divide up the " \ |
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1564 "card table scanning work into") \ |
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1565 \ |
fc2b798ab316
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1566 diagnostic(intx, ParGCCardsPerStrideChunk, 256, \ |
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1567 "The number of cards in each chunk of the parallel chunks used " \ |
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1568 "during card table scanning") \ |
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1569 \ |
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1570 product(uintx, CMSParPromoteBlocksToClaim, 16, \ |
12836
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1571 "Number of blocks to attempt to claim when refilling CMS LAB's " \ |
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1572 "for parallel GC") \ |
0 | 1573 \ |
1145
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1574 product(uintx, OldPLABWeight, 50, \ |
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1575 "Percentage (0-100) used to weight the current sample when " \ |
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1576 "computing exponentially decaying average for resizing " \ |
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1577 "CMSParPromoteBlocksToClaim") \ |
1145
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1578 \ |
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1579 product(bool, ResizeOldPLAB, true, \ |
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1580 "Dynamically resize (old gen) promotion LAB's") \ |
1145
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1581 \ |
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1582 product(bool, PrintOldPLAB, false, \ |
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1583 "Print (old gen) promotion LAB's sizing decisions") \ |
1145
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1584 \ |
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1585 product(uintx, CMSOldPLABMin, 16, \ |
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1586 "Minimum size of CMS gen promotion LAB caches per worker " \ |
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1587 "per block size") \ |
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1588 \ |
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1589 product(uintx, CMSOldPLABMax, 1024, \ |
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1590 "Maximum size of CMS gen promotion LAB caches per worker " \ |
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1591 "per block size") \ |
1145
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1592 \ |
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1593 product(uintx, CMSOldPLABNumRefills, 4, \ |
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1594 "Nominal number of refills of CMS gen promotion LAB cache " \ |
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1595 "per worker per block size") \ |
1145
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1596 \ |
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1597 product(bool, CMSOldPLABResizeQuicker, false, \ |
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1598 "React on-the-fly during a scavenge to a sudden " \ |
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1599 "change in block demand rate") \ |
1145
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1600 \ |
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1601 product(uintx, CMSOldPLABToleranceFactor, 4, \ |
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1602 "The tolerance of the phase-change detector for on-the-fly " \ |
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1603 "PLAB resizing during a scavenge") \ |
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1604 \ |
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1605 product(uintx, CMSOldPLABReactivityFactor, 2, \ |
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1606 "The gain in the feedback loop for on-the-fly PLAB resizing " \ |
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1607 "during a scavenge") \ |
1145
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1608 \ |
0 | 1609 product(bool, AlwaysPreTouch, false, \ |
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1610 "Force all freshly committed pages to be pre-touched") \ |
0 | 1611 \ |
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1612 product_pd(uintx, CMSYoungGenPerWorker, \ |
2368
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1613 "The maximum size of young gen chosen by default per GC worker " \ |
1064 | 1614 "thread available") \ |
0 | 1615 \ |
1616 product(bool, CMSIncrementalMode, false, \ | |
1617 "Whether CMS GC should operate in \"incremental\" mode") \ | |
1618 \ | |
1619 product(uintx, CMSIncrementalDutyCycle, 10, \ | |
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1620 "Percentage (0-100) of CMS incremental mode duty cycle. If " \ |
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1621 "CMSIncrementalPacing is enabled, then this is just the initial " \ |
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1622 "value.") \ |
0 | 1623 \ |
1624 product(bool, CMSIncrementalPacing, true, \ | |
1625 "Whether the CMS incremental mode duty cycle should be " \ | |
1626 "automatically adjusted") \ | |
1627 \ | |
1628 product(uintx, CMSIncrementalDutyCycleMin, 0, \ | |
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1629 "Minimum percentage (0-100) of the CMS incremental duty cycle " \ |
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1630 "used when CMSIncrementalPacing is enabled") \ |
0 | 1631 \ |
1632 product(uintx, CMSIncrementalSafetyFactor, 10, \ | |
1064 | 1633 "Percentage (0-100) used to add conservatism when computing the " \ |
1634 "duty cycle") \ | |
0 | 1635 \ |
1636 product(uintx, CMSIncrementalOffset, 0, \ | |
12836
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1637 "Percentage (0-100) by which the CMS incremental mode duty cycle "\ |
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1638 "is shifted to the right within the period between young GCs") \ |
0 | 1639 \ |
1145
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1640 product(uintx, CMSExpAvgFactor, 50, \ |
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1641 "Percentage (0-100) used to weigh the current sample when " \ |
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1642 "computing exponential averages for CMS statistics") \ |
1145
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1643 \ |
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1644 product(uintx, CMS_FLSWeight, 75, \ |
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1645 "Percentage (0-100) used to weigh the current sample when " \ |
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1646 "computing exponentially decaying averages for CMS FLS " \ |
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1647 "statistics") \ |
1145
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1648 \ |
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1649 product(uintx, CMS_FLSPadding, 1, \ |
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1650 "The multiple of deviation from mean to use for buffering " \ |
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1651 "against volatility in free list demand") \ |
0 | 1652 \ |
1653 product(uintx, FLSCoalescePolicy, 2, \ | |
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1654 "CMS: aggressiveness level for coalescing, increasing " \ |
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1655 "from 0 to 4") \ |
0 | 1656 \ |
1145
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1657 product(bool, FLSAlwaysCoalesceLarge, false, \ |
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1658 "CMS: larger free blocks are always available for coalescing") \ |
1145
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1659 \ |
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1660 product(double, FLSLargestBlockCoalesceProximity, 0.99, \ |
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1661 "CMS: the smaller the percentage the greater the coalescing " \ |
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1662 "force") \ |
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1663 \ |
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1664 product(double, CMSSmallCoalSurplusPercent, 1.05, \ |
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1665 "CMS: the factor by which to inflate estimated demand of small " \ |
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1666 "block sizes to prevent coalescing with an adjoining block") \ |
1145
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1667 \ |
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1668 product(double, CMSLargeCoalSurplusPercent, 0.95, \ |
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1669 "CMS: the factor by which to inflate estimated demand of large " \ |
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1670 "block sizes to prevent coalescing with an adjoining block") \ |
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1671 \ |
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1672 product(double, CMSSmallSplitSurplusPercent, 1.10, \ |
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1673 "CMS: the factor by which to inflate estimated demand of small " \ |
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1674 "block sizes to prevent splitting to supply demand for smaller " \ |
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1675 "blocks") \ |
1145
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1676 \ |
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1677 product(double, CMSLargeSplitSurplusPercent, 1.00, \ |
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1678 "CMS: the factor by which to inflate estimated demand of large " \ |
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1679 "block sizes to prevent splitting to supply demand for smaller " \ |
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1680 "blocks") \ |
1145
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1681 \ |
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1682 product(bool, CMSExtrapolateSweep, false, \ |
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|
1683 "CMS: cushion for block demand during sweep") \ |
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|
1684 \ |
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1685 product(uintx, CMS_SweepWeight, 75, \ |
1064 | 1686 "Percentage (0-100) used to weight the current sample when " \ |
1687 "computing exponentially decaying average for inter-sweep " \ | |
1688 "duration") \ | |
0 | 1689 \ |
1145
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1690 product(uintx, CMS_SweepPadding, 1, \ |
1064 | 1691 "The multiple of deviation from mean to use for buffering " \ |
12836
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1692 "against volatility in inter-sweep duration") \ |
0 | 1693 \ |
1694 product(uintx, CMS_SweepTimerThresholdMillis, 10, \ | |
1695 "Skip block flux-rate sampling for an epoch unless inter-sweep " \ | |
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1696 "duration exceeds this threshold in milliseconds") \ |
0 | 1697 \ |
1698 develop(bool, CMSTraceIncrementalMode, false, \ | |
1699 "Trace CMS incremental mode") \ | |
1700 \ | |
1701 develop(bool, CMSTraceIncrementalPacing, false, \ | |
1702 "Trace CMS incremental mode pacing computation") \ | |
1703 \ | |
1704 develop(bool, CMSTraceThreadState, false, \ | |
1705 "Trace the CMS thread state (enable the trace_state() method)") \ | |
1706 \ | |
7454
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1707 product(bool, CMSClassUnloadingEnabled, true, \ |
0 | 1708 "Whether class unloading enabled when using CMS GC") \ |
1709 \ | |
94
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1710 product(uintx, CMSClassUnloadingMaxInterval, 0, \ |
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1711 "When CMS class unloading is enabled, the maximum CMS cycle " \ |
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1712 "count for which classes may not be unloaded") \ |
94
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1713 \ |
0 | 1714 product(bool, CMSCompactWhenClearAllSoftRefs, true, \ |
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1715 "Compact when asked to collect CMS gen with " \ |
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1716 "clear_all_soft_refs()") \ |
0 | 1717 \ |
1718 product(bool, UseCMSCompactAtFullCollection, true, \ | |
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1719 "Use Mark-Sweep-Compact algorithm at full collections") \ |
0 | 1720 \ |
1721 product(uintx, CMSFullGCsBeforeCompaction, 0, \ | |
1722 "Number of CMS full collection done before compaction if > 0") \ | |
1723 \ | |
1724 develop(intx, CMSDictionaryChoice, 0, \ | |
1725 "Use BinaryTreeDictionary as default in the CMS generation") \ | |
1726 \ | |
1727 product(uintx, CMSIndexedFreeListReplenish, 4, \ | |
6818 | 1728 "Replenish an indexed free list with this number of chunks") \ |
0 | 1729 \ |
1145
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1730 product(bool, CMSReplenishIntermediate, true, \ |
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1731 "Replenish all intermediate free-list caches") \ |
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1732 \ |
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1733 product(bool, CMSSplitIndexedFreeListBlocks, true, \ |
1777
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1734 "When satisfying batched demand, split blocks from the " \ |
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1735 "IndexedFreeList whose size is a multiple of requested size") \ |
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1736 \ |
0 | 1737 product(bool, CMSLoopWarn, false, \ |
1738 "Warn in case of excessive CMS looping") \ | |
1739 \ | |
1740 develop(bool, CMSOverflowEarlyRestoration, false, \ | |
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1741 "Restore preserved marks early") \ |
0 | 1742 \ |
1284 | 1743 product(uintx, MarkStackSize, NOT_LP64(32*K) LP64_ONLY(4*M), \ |
1744 "Size of marking stack") \ | |
1745 \ | |
1746 product(uintx, MarkStackSizeMax, NOT_LP64(4*M) LP64_ONLY(512*M), \ | |
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1747 "Maximum size of marking stack") \ |
0 | 1748 \ |
1749 notproduct(bool, CMSMarkStackOverflowALot, false, \ | |
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1750 "Simulate frequent marking stack / work queue overflow") \ |
0 | 1751 \ |
534 | 1752 notproduct(uintx, CMSMarkStackOverflowInterval, 1000, \ |
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1753 "An \"interval\" counter that determines how frequently " \ |
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1754 "to simulate overflow; a smaller number increases frequency") \ |
0 | 1755 \ |
1756 product(uintx, CMSMaxAbortablePrecleanLoops, 0, \ | |
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1757 "(Temporary, subject to experimentation) " \ |
0 | 1758 "Maximum number of abortable preclean iterations, if > 0") \ |
1759 \ | |
1760 product(intx, CMSMaxAbortablePrecleanTime, 5000, \ | |
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1761 "(Temporary, subject to experimentation) " \ |
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1762 "Maximum time in abortable preclean (in milliseconds)") \ |
0 | 1763 \ |
1764 product(uintx, CMSAbortablePrecleanMinWorkPerIteration, 100, \ | |
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1765 "(Temporary, subject to experimentation) " \ |
0 | 1766 "Nominal minimum work per abortable preclean iteration") \ |
1767 \ | |
1887
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1768 manageable(intx, CMSAbortablePrecleanWaitMillis, 100, \ |
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1769 "(Temporary, subject to experimentation) " \ |
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1770 "Time that we sleep between iterations when not given " \ |
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1771 "enough work per iteration") \ |
0 | 1772 \ |
1773 product(uintx, CMSRescanMultiple, 32, \ | |
1774 "Size (in cards) of CMS parallel rescan task") \ | |
1775 \ | |
1776 product(uintx, CMSConcMarkMultiple, 32, \ | |
1777 "Size (in cards) of CMS concurrent MT marking task") \ | |
1778 \ | |
1779 product(bool, CMSAbortSemantics, false, \ | |
1780 "Whether abort-on-overflow semantics is implemented") \ | |
1781 \ | |
11975 | 1782 product(bool, CMSParallelInitialMarkEnabled, true, \ |
1783 "Use the parallel initial mark.") \ | |
1784 \ | |
0 | 1785 product(bool, CMSParallelRemarkEnabled, true, \ |
1786 "Whether parallel remark enabled (only if ParNewGC)") \ | |
1787 \ | |
1788 product(bool, CMSParallelSurvivorRemarkEnabled, true, \ | |
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1789 "Whether parallel remark of survivor space " \ |
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1790 "enabled (effective only if CMSParallelRemarkEnabled)") \ |
0 | 1791 \ |
1792 product(bool, CMSPLABRecordAlways, true, \ | |
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1793 "Always record survivor space PLAB boundaries (effective only " \ |
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1794 "if CMSParallelSurvivorRemarkEnabled)") \ |
0 | 1795 \ |
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1796 product(bool, CMSEdenChunksRecordAlways, true, \ |
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1797 "Always record eden chunks used for the parallel initial mark " \ |
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1798 "or remark of eden") \ |
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1799 \ |
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1800 product(bool, CMSPrintEdenSurvivorChunks, false, \ |
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1801 "Print the eden and the survivor chunks used for the parallel " \ |
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1802 "initial mark or remark of the eden/survivor spaces") \ |
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1803 \ |
0 | 1804 product(bool, CMSConcurrentMTEnabled, true, \ |
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1805 "Whether multi-threaded concurrent work enabled " \ |
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1806 "(effective only if ParNewGC)") \ |
0 | 1807 \ |
1808 product(bool, CMSPrecleaningEnabled, true, \ | |
1809 "Whether concurrent precleaning enabled") \ | |
1810 \ | |
1811 product(uintx, CMSPrecleanIter, 3, \ | |
1812 "Maximum number of precleaning iteration passes") \ | |
1813 \ | |
1814 product(uintx, CMSPrecleanNumerator, 2, \ | |
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1815 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence " \ |
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1816 "ratio") \ |
0 | 1817 \ |
1818 product(uintx, CMSPrecleanDenominator, 3, \ | |
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1819 "CMSPrecleanNumerator:CMSPrecleanDenominator yields convergence " \ |
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1820 "ratio") \ |
0 | 1821 \ |
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1822 product(bool, CMSPrecleanRefLists1, true, \ |
0 | 1823 "Preclean ref lists during (initial) preclean phase") \ |
1824 \ | |
1825 product(bool, CMSPrecleanRefLists2, false, \ | |
1826 "Preclean ref lists during abortable preclean phase") \ | |
1827 \ | |
1828 product(bool, CMSPrecleanSurvivors1, false, \ | |
1829 "Preclean survivors during (initial) preclean phase") \ | |
1830 \ | |
1831 product(bool, CMSPrecleanSurvivors2, true, \ | |
1832 "Preclean survivors during abortable preclean phase") \ | |
1833 \ | |
1834 product(uintx, CMSPrecleanThreshold, 1000, \ | |
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1835 "Do not iterate again if number of dirty cards is less than this")\ |
0 | 1836 \ |
1837 product(bool, CMSCleanOnEnter, true, \ | |
1838 "Clean-on-enter optimization for reducing number of dirty cards") \ | |
1839 \ | |
1840 product(uintx, CMSRemarkVerifyVariant, 1, \ | |
1841 "Choose variant (1,2) of verification following remark") \ | |
1842 \ | |
1843 product(uintx, CMSScheduleRemarkEdenSizeThreshold, 2*M, \ | |
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1844 "If Eden size is below this, do not try to schedule remark") \ |
0 | 1845 \ |
1846 product(uintx, CMSScheduleRemarkEdenPenetration, 50, \ | |
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1847 "The Eden occupancy percentage (0-100) at which " \ |
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1848 "to try and schedule remark pause") \ |
0 | 1849 \ |
1850 product(uintx, CMSScheduleRemarkSamplingRatio, 5, \ | |
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1851 "Start sampling eden top at least before young gen " \ |
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1852 "occupancy reaches 1/<ratio> of the size at which " \ |
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1853 "we plan to schedule remark") \ |
0 | 1854 \ |
1855 product(uintx, CMSSamplingGrain, 16*K, \ | |
1856 "The minimum distance between eden samples for CMS (see above)") \ | |
1857 \ | |
1858 product(bool, CMSScavengeBeforeRemark, false, \ | |
1859 "Attempt scavenge before the CMS remark step") \ | |
1860 \ | |
1861 develop(bool, CMSTraceSweeper, false, \ | |
1862 "Trace some actions of the CMS sweeper") \ | |
1863 \ | |
1864 product(uintx, CMSWorkQueueDrainThreshold, 10, \ | |
1865 "Don't drain below this size per parallel worker/thief") \ | |
1866 \ | |
1887
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1867 manageable(intx, CMSWaitDuration, 2000, \ |
0 | 1868 "Time in milliseconds that CMS thread waits for young GC") \ |
1869 \ | |
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1870 develop(uintx, CMSCheckInterval, 1000, \ |
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1871 "Interval in milliseconds that CMS thread checks if it " \ |
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1872 "should start a collection cycle") \ |
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1873 \ |
0 | 1874 product(bool, CMSYield, true, \ |
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1875 "Yield between steps of CMS") \ |
0 | 1876 \ |
1877 product(uintx, CMSBitMapYieldQuantum, 10*M, \ | |
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1878 "Bitmap operations should process at most this many bits " \ |
0 | 1879 "between yields") \ |
1880 \ | |
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1881 product(bool, CMSDumpAtPromotionFailure, false, \ |
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1882 "Dump useful information about the state of the CMS old " \ |
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1883 "generation upon a promotion failure") \ |
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1884 \ |
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1885 product(bool, CMSPrintChunksInDump, false, \ |
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1886 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ |
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1887 "more detailed information about the free chunks") \ |
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1888 \ |
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1889 product(bool, CMSPrintObjectsInDump, false, \ |
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1890 "In a dump enabled by CMSDumpAtPromotionFailure, include " \ |
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1891 "more detailed information about the allocated objects") \ |
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1892 \ |
0 | 1893 diagnostic(bool, FLSVerifyAllHeapReferences, false, \ |
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1894 "Verify that all references across the FLS boundary " \ |
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1895 "are to valid objects") \ |
0 | 1896 \ |
1897 diagnostic(bool, FLSVerifyLists, false, \ | |
1898 "Do lots of (expensive) FreeListSpace verification") \ | |
1899 \ | |
1900 diagnostic(bool, FLSVerifyIndexTable, false, \ | |
1901 "Do lots of (expensive) FLS index table verification") \ | |
1902 \ | |
1903 develop(bool, FLSVerifyDictionary, false, \ | |
1904 "Do lots of (expensive) FLS dictionary verification") \ | |
1905 \ | |
1906 develop(bool, VerifyBlockOffsetArray, false, \ | |
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1907 "Do (expensive) block offset array verification") \ |
0 | 1908 \ |
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1909 diagnostic(bool, BlockOffsetArrayUseUnallocatedBlock, false, \ |
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1910 "Maintain _unallocated_block in BlockOffsetArray " \ |
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1911 "(currently applicable only to CMS collector)") \ |
0 | 1912 \ |
1913 develop(bool, TraceCMSState, false, \ | |
1914 "Trace the state of the CMS collection") \ | |
1915 \ | |
1916 product(intx, RefDiscoveryPolicy, 0, \ | |
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1917 "Select type of reference discovery policy: " \ |
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1918 "reference-based(0) or referent-based(1)") \ |
0 | 1919 \ |
1920 product(bool, ParallelRefProcEnabled, false, \ | |
1921 "Enable parallel reference processing whenever possible") \ | |
1922 \ | |
1923 product(bool, ParallelRefProcBalancingEnabled, true, \ | |
1924 "Enable balancing of reference processing queues") \ | |
1925 \ | |
8035 | 1926 product(uintx, CMSTriggerRatio, 80, \ |
0 | 1927 "Percentage of MinHeapFreeRatio in CMS generation that is " \ |
1064 | 1928 "allocated before a CMS collection cycle commences") \ |
0 | 1929 \ |
94
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1930 product(uintx, CMSBootstrapOccupancy, 50, \ |
0 | 1931 "Percentage CMS generation occupancy at which to " \ |
1064 | 1932 "initiate CMS collection for bootstrapping collection stats") \ |
0 | 1933 \ |
1934 product(intx, CMSInitiatingOccupancyFraction, -1, \ | |
1935 "Percentage CMS generation occupancy to start a CMS collection " \ | |
1064 | 1936 "cycle. A negative value means that CMSTriggerRatio is used") \ |
94
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|
1937 \ |
1283
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1938 product(uintx, InitiatingHeapOccupancyPercent, 45, \ |
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1939 "Percentage of the (entire) heap occupancy to start a " \ |
8034
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|
1940 "concurrent GC cycle. It is used by GCs that trigger a " \ |
1283
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|
1941 "concurrent GC cycle based on the occupancy of the entire heap, " \ |
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1942 "not just one of the generations (e.g., G1). A value of 0 " \ |
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changeset
|
1943 "denotes 'do constant GC cycles'.") \ |
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changeset
|
1944 \ |
20326
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|
1945 manageable(intx, CMSTriggerInterval, -1, \ |
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1946 "Commence a CMS collection cycle (at least) every so many " \ |
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|
1947 "milliseconds (0 permanently, -1 disabled)") \ |
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1948 \ |
0 | 1949 product(bool, UseCMSInitiatingOccupancyOnly, false, \ |
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1950 "Only use occupancy as a criterion for starting a CMS collection")\ |
0 | 1951 \ |
10287
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1952 product(uintx, CMSIsTooFullPercentage, 98, \ |
1064 | 1953 "An absolute ceiling above which CMS will always consider the " \ |
7461
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1954 "unloading of classes when class unloading is enabled") \ |
94
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|
1955 \ |
0 | 1956 develop(bool, CMSTestInFreeList, false, \ |
1957 "Check if the coalesced range is already in the " \ | |
1064 | 1958 "free lists as claimed") \ |
0 | 1959 \ |
1960 notproduct(bool, CMSVerifyReturnedBytes, false, \ | |
1961 "Check that all the garbage collected was returned to the " \ | |
12836
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1962 "free lists") \ |
0 | 1963 \ |
1964 notproduct(bool, ScavengeALot, false, \ | |
1965 "Force scavenge at every Nth exit from the runtime system " \ | |
1966 "(N=ScavengeALotInterval)") \ | |
1967 \ | |
1968 develop(bool, FullGCALot, false, \ | |
1969 "Force full gc at every Nth exit from the runtime system " \ | |
1970 "(N=FullGCALotInterval)") \ | |
1971 \ | |
1972 notproduct(bool, GCALotAtAllSafepoints, false, \ | |
1973 "Enforce ScavengeALot/GCALot at all potential safepoints") \ | |
1974 \ | |
1145
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1975 product(bool, PrintPromotionFailure, false, \ |
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|
1976 "Print additional diagnostic information following " \ |
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1977 "promotion failure") \ |
1145
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|
1978 \ |
0 | 1979 notproduct(bool, PromotionFailureALot, false, \ |
1980 "Use promotion failure handling on every youngest generation " \ | |
1981 "collection") \ | |
1982 \ | |
1983 develop(uintx, PromotionFailureALotCount, 1000, \ | |
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1984 "Number of promotion failures occurring at ParGCAllocBuffer " \ |
0 | 1985 "refill attempts (ParNew) or promotion attempts " \ |
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1986 "(other young collectors)") \ |
0 | 1987 \ |
1988 develop(uintx, PromotionFailureALotInterval, 5, \ | |
1989 "Total collections between promotion failures alot") \ | |
1990 \ | |
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1991 experimental(uintx, WorkStealingSleepMillis, 1, \ |
0 | 1992 "Sleep time when sleep is used for yields") \ |
1993 \ | |
2430 | 1994 experimental(uintx, WorkStealingYieldsBeforeSleep, 5000, \ |
0 | 1995 "Number of yields before a sleep is done during workstealing") \ |
1996 \ | |
1837
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1997 experimental(uintx, WorkStealingHardSpins, 4096, \ |
546
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1998 "Number of iterations in a spin loop between checks on " \ |
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changeset
|
1999 "time out of hard spin") \ |
05c6d52fa7a9
6690928: Use spinning in combination with yields for workstealing termination.
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diff
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|
2000 \ |
1837
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|
2001 experimental(uintx, WorkStealingSpinToYieldRatio, 10, \ |
546
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|
2002 "Ratio of hard spins to calls to yield") \ |
05c6d52fa7a9
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diff
changeset
|
2003 \ |
1311
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diff
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|
2004 develop(uintx, ObjArrayMarkingStride, 512, \ |
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2005 "Number of object array elements to push onto the marking stack " \ |
1311
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changeset
|
2006 "before pushing a continuation entry") \ |
2a1472c30599
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1288
diff
changeset
|
2007 \ |
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|
2008 develop(bool, MetadataAllocationFailALot, false, \ |
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|
2009 "Fail metadata allocations at intervals controlled by " \ |
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|
2010 "MetadataAllocationFailALotInterval") \ |
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|
2011 \ |
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|
2012 develop(uintx, MetadataAllocationFailALotInterval, 1000, \ |
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2013 "Metadata allocation failure a lot interval") \ |
6725
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|
2014 \ |
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|
2015 develop(bool, TraceMetadataChunkAllocation, false, \ |
7461
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|
2016 "Trace chunk metadata allocations") \ |
6725
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|
2017 \ |
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|
2018 product(bool, TraceMetadataHumongousAllocation, false, \ |
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|
2019 "Trace humongous metadata allocations") \ |
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|
2020 \ |
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|
2021 develop(bool, TraceMetavirtualspaceAllocation, false, \ |
7461
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|
2022 "Trace virtual space metadata allocations") \ |
6725
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|
2023 \ |
3779 | 2024 notproduct(bool, ExecuteInternalVMTests, false, \ |
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|
2025 "Enable execution of internal VM tests") \ |
3779 | 2026 \ |
12110
4c84d351cca9
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stefank
parents:
12056
diff
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|
2027 notproduct(bool, VerboseInternalVMTests, false, \ |
4c84d351cca9
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
12056
diff
changeset
|
2028 "Turn on logging for internal VM tests.") \ |
4c84d351cca9
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
12056
diff
changeset
|
2029 \ |
0 | 2030 product_pd(bool, UseTLAB, "Use thread-local object allocation") \ |
2031 \ | |
2032 product_pd(bool, ResizeTLAB, \ | |
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|
2033 "Dynamically resize TLAB size for threads") \ |
0 | 2034 \ |
2035 product(bool, ZeroTLAB, false, \ | |
2036 "Zero out the newly created TLAB") \ | |
2037 \ | |
342
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ysr
parents:
142
diff
changeset
|
2038 product(bool, FastTLABRefill, true, \ |
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6711316: Open source the Garbage-First garbage collector
ysr
parents:
142
diff
changeset
|
2039 "Use fast TLAB refill code") \ |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
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parents:
142
diff
changeset
|
2040 \ |
0 | 2041 product(bool, PrintTLAB, false, \ |
2042 "Print various TLAB related information") \ | |
2043 \ | |
2044 product(bool, TLABStats, true, \ | |
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|
2045 "Provide more detailed and expensive TLAB statistics " \ |
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|
2046 "(with PrintTLAB)") \ |
0 | 2047 \ |
2192
b92c45f2bc75
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bobv
parents:
2177
diff
changeset
|
2048 EMBEDDED_ONLY(product(bool, LowMemoryProtection, true, \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
2049 "Enable LowMemoryProtection")) \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
2050 \ |
0 | 2051 product_pd(bool, NeverActAsServerClassMachine, \ |
2052 "Never act like a server-class machine") \ | |
2053 \ | |
2054 product(bool, AlwaysActAsServerClassMachine, false, \ | |
2055 "Always act like a server-class machine") \ | |
2056 \ | |
1064 | 2057 product_pd(uint64_t, MaxRAM, \ |
2058 "Real memory size (in bytes) used to set maximum heap size") \ | |
2059 \ | |
2060 product(uintx, ErgoHeapSizeLimit, 0, \ | |
2061 "Maximum ergonomically set heap size (in bytes); zero means use " \ | |
2062 "MaxRAM / MaxRAMFraction") \ | |
2063 \ | |
2064 product(uintx, MaxRAMFraction, 4, \ | |
2065 "Maximum fraction (1/n) of real memory used for maximum heap " \ | |
2066 "size") \ | |
0 | 2067 \ |
2068 product(uintx, DefaultMaxRAMFraction, 4, \ | |
1064 | 2069 "Maximum fraction (1/n) of real memory used for maximum heap " \ |
2070 "size; deprecated: to be renamed to MaxRAMFraction") \ | |
2071 \ | |
2072 product(uintx, MinRAMFraction, 2, \ | |
2073 "Minimum fraction (1/n) of real memory used for maxmimum heap " \ | |
2074 "size on systems with small physical memory size") \ | |
2075 \ | |
2076 product(uintx, InitialRAMFraction, 64, \ | |
2077 "Fraction (1/n) of real memory used for initial heap size") \ | |
0 | 2078 \ |
8854
754c24457b20
7112912: Message "Error occurred during initialization of VM" on boxes with lots of RAM
tschatzl
parents:
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changeset
|
2079 develop(uintx, MaxVirtMemFraction, 2, \ |
12836
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|
2080 "Maximum fraction (1/n) of virtual memory used for ergonomically "\ |
8854
754c24457b20
7112912: Message "Error occurred during initialization of VM" on boxes with lots of RAM
tschatzl
parents:
8853
diff
changeset
|
2081 "determining maximum heap size") \ |
754c24457b20
7112912: Message "Error occurred during initialization of VM" on boxes with lots of RAM
tschatzl
parents:
8853
diff
changeset
|
2082 \ |
0 | 2083 product(bool, UseAutoGCSelectPolicy, false, \ |
2084 "Use automatic collection selection policy") \ | |
2085 \ | |
2086 product(uintx, AutoGCSelectPauseMillis, 5000, \ | |
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changeset
|
2087 "Automatic GC selection pause threshold in milliseconds") \ |
0 | 2088 \ |
2089 product(bool, UseAdaptiveSizePolicy, true, \ | |
2090 "Use adaptive generation sizing policies") \ | |
2091 \ | |
2092 product(bool, UsePSAdaptiveSurvivorSizePolicy, true, \ | |
2093 "Use adaptive survivor sizing policies") \ | |
2094 \ | |
2095 product(bool, UseAdaptiveGenerationSizePolicyAtMinorCollection, true, \ | |
2096 "Use adaptive young-old sizing policies at minor collections") \ | |
2097 \ | |
2098 product(bool, UseAdaptiveGenerationSizePolicyAtMajorCollection, true, \ | |
2099 "Use adaptive young-old sizing policies at major collections") \ | |
2100 \ | |
2101 product(bool, UseAdaptiveSizePolicyWithSystemGC, false, \ | |
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|
2102 "Include statistics from System.gc() for adaptive size policy") \ |
0 | 2103 \ |
2104 product(bool, UseAdaptiveGCBoundary, false, \ | |
2105 "Allow young-old boundary to move") \ | |
2106 \ | |
2107 develop(bool, TraceAdaptiveGCBoundary, false, \ | |
2108 "Trace young-old boundary moves") \ | |
2109 \ | |
2110 develop(intx, PSAdaptiveSizePolicyResizeVirtualSpaceAlot, -1, \ | |
2111 "Resize the virtual spaces of the young or old generations") \ | |
2112 \ | |
2113 product(uintx, AdaptiveSizeThroughPutPolicy, 0, \ | |
12836
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changeset
|
2114 "Policy for changing generation size for throughput goals") \ |
0 | 2115 \ |
2116 product(uintx, AdaptiveSizePausePolicy, 0, \ | |
2117 "Policy for changing generation size for pause goals") \ | |
2118 \ | |
2119 develop(bool, PSAdjustTenuredGenForMinorPause, false, \ | |
12836
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changeset
|
2120 "Adjust tenured generation to achieve a minor pause goal") \ |
0 | 2121 \ |
2122 develop(bool, PSAdjustYoungGenForMajorPause, false, \ | |
12836
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changeset
|
2123 "Adjust young generation to achieve a major pause goal") \ |
0 | 2124 \ |
2125 product(uintx, AdaptiveSizePolicyInitializingSteps, 20, \ | |
2126 "Number of steps where heuristics is used before data is used") \ | |
2127 \ | |
2128 develop(uintx, AdaptiveSizePolicyReadyThreshold, 5, \ | |
2129 "Number of collections before the adaptive sizing is started") \ | |
2130 \ | |
2131 product(uintx, AdaptiveSizePolicyOutputInterval, 0, \ | |
10287
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changeset
|
2132 "Collection interval for printing information; zero means never") \ |
0 | 2133 \ |
2134 product(bool, UseAdaptiveSizePolicyFootprintGoal, true, \ | |
2135 "Use adaptive minimum footprint as a goal") \ | |
2136 \ | |
2137 product(uintx, AdaptiveSizePolicyWeight, 10, \ | |
2138 "Weight given to exponential resizing, between 0 and 100") \ | |
2139 \ | |
2140 product(uintx, AdaptiveTimeWeight, 25, \ | |
2141 "Weight given to time in adaptive policy, between 0 and 100") \ | |
2142 \ | |
2143 product(uintx, PausePadding, 1, \ | |
2144 "How much buffer to keep for pause time") \ | |
2145 \ | |
2146 product(uintx, PromotedPadding, 3, \ | |
2147 "How much buffer to keep for promotion failure") \ | |
2148 \ | |
2149 product(uintx, SurvivorPadding, 3, \ | |
2150 "How much buffer to keep for survivor overflow") \ | |
2151 \ | |
2152 product(uintx, ThresholdTolerance, 10, \ | |
2153 "Allowed collection cost difference between generations") \ | |
2154 \ | |
2155 product(uintx, AdaptiveSizePolicyCollectionCostMargin, 50, \ | |
1064 | 2156 "If collection costs are within margin, reduce both by full " \ |
2157 "delta") \ | |
0 | 2158 \ |
2159 product(uintx, YoungGenerationSizeIncrement, 20, \ | |
2160 "Adaptive size percentage change in young generation") \ | |
2161 \ | |
2162 product(uintx, YoungGenerationSizeSupplement, 80, \ | |
2163 "Supplement to YoungedGenerationSizeIncrement used at startup") \ | |
2164 \ | |
2165 product(uintx, YoungGenerationSizeSupplementDecay, 8, \ | |
2166 "Decay factor to YoungedGenerationSizeSupplement") \ | |
2167 \ | |
2168 product(uintx, TenuredGenerationSizeIncrement, 20, \ | |
2169 "Adaptive size percentage change in tenured generation") \ | |
2170 \ | |
2171 product(uintx, TenuredGenerationSizeSupplement, 80, \ | |
2172 "Supplement to TenuredGenerationSizeIncrement used at startup") \ | |
2173 \ | |
2174 product(uintx, TenuredGenerationSizeSupplementDecay, 2, \ | |
2175 "Decay factor to TenuredGenerationSizeIncrement") \ | |
2176 \ | |
6818 | 2177 product(uintx, MaxGCPauseMillis, max_uintx, \ |
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|
2178 "Adaptive size policy maximum GC pause time goal in millisecond, "\ |
b4d8a3d4db73
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changeset
|
2179 "or (G1 Only) the maximum GC time per MMU time slice") \ |
751 | 2180 \ |
1610
79107c3a6bd5
6949307: G1: raise a vm error, do not core dump, if target pause time and target interval are inconsistent
tonyp
parents:
1589
diff
changeset
|
2181 product(uintx, GCPauseIntervalMillis, 0, \ |
751 | 2182 "Time slice for MMU specification") \ |
0 | 2183 \ |
2184 product(uintx, MaxGCMinorPauseMillis, max_uintx, \ | |
12836
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changeset
|
2185 "Adaptive size policy maximum GC minor pause time goal " \ |
b4d8a3d4db73
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changeset
|
2186 "in millisecond") \ |
0 | 2187 \ |
2188 product(uintx, GCTimeRatio, 99, \ | |
2189 "Adaptive size policy application time to GC time ratio") \ | |
2190 \ | |
2191 product(uintx, AdaptiveSizeDecrementScaleFactor, 4, \ | |
2192 "Adaptive size scale down factor for shrinking") \ | |
2193 \ | |
2194 product(bool, UseAdaptiveSizeDecayMajorGCCost, true, \ | |
2195 "Adaptive size decays the major cost for long major intervals") \ | |
2196 \ | |
2197 product(uintx, AdaptiveSizeMajorGCDecayTimeScale, 10, \ | |
2198 "Time scale over which major costs decay") \ | |
2199 \ | |
2200 product(uintx, MinSurvivorRatio, 3, \ | |
2201 "Minimum ratio of young generation/survivor space size") \ | |
2202 \ | |
2203 product(uintx, InitialSurvivorRatio, 8, \ | |
12899
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|
2204 "Initial ratio of young generation/survivor space size") \ |
0 | 2205 \ |
2206 product(uintx, BaseFootPrintEstimate, 256*M, \ | |
2207 "Estimate of footprint other than Java Heap") \ | |
2208 \ | |
2209 product(bool, UseGCOverheadLimit, true, \ | |
2210 "Use policy to limit of proportion of time spent in GC " \ | |
2211 "before an OutOfMemory error is thrown") \ | |
2212 \ | |
2213 product(uintx, GCTimeLimit, 98, \ | |
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2214 "Limit of the proportion of time spent in GC before " \ |
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2215 "an OutOfMemoryError is thrown (used with GCHeapFreeLimit)") \ |
0 | 2216 \ |
2217 product(uintx, GCHeapFreeLimit, 2, \ | |
2218 "Minimum percentage of free space after a full GC before an " \ | |
2219 "OutOfMemoryError is thrown (used with GCTimeLimit)") \ | |
2220 \ | |
2221 develop(uintx, AdaptiveSizePolicyGCTimeLimitThreshold, 5, \ | |
2222 "Number of consecutive collections before gc time limit fires") \ | |
2223 \ | |
2224 product(bool, PrintAdaptiveSizePolicy, false, \ | |
2225 "Print information about AdaptiveSizePolicy") \ | |
2226 \ | |
2227 product(intx, PrefetchCopyIntervalInBytes, -1, \ | |
2228 "How far ahead to prefetch destination area (<= 0 means off)") \ | |
2229 \ | |
2230 product(intx, PrefetchScanIntervalInBytes, -1, \ | |
2231 "How far ahead to prefetch scan area (<= 0 means off)") \ | |
2232 \ | |
2233 product(intx, PrefetchFieldsAhead, -1, \ | |
2234 "How many fields ahead to prefetch in oop scan (<= 0 means off)") \ | |
2235 \ | |
10186
b06ac540229e
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|
2236 diagnostic(bool, VerifySilently, false, \ |
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|
2237 "Do not print the verification progress") \ |
10186
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|
2238 \ |
9071
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|
2239 diagnostic(bool, VerifyDuringStartup, false, \ |
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|
2240 "Verify memory system before executing any Java code " \ |
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|
2241 "during VM initialization") \ |
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|
2242 \ |
0 | 2243 diagnostic(bool, VerifyBeforeExit, trueInDebug, \ |
2244 "Verify system before exiting") \ | |
2245 \ | |
2246 diagnostic(bool, VerifyBeforeGC, false, \ | |
2247 "Verify memory system before GC") \ | |
2248 \ | |
2249 diagnostic(bool, VerifyAfterGC, false, \ | |
2250 "Verify memory system after GC") \ | |
2251 \ | |
2252 diagnostic(bool, VerifyDuringGC, false, \ | |
2253 "Verify memory system during GC (between phases)") \ | |
2254 \ | |
390 | 2255 diagnostic(bool, GCParallelVerificationEnabled, true, \ |
2256 "Enable parallel memory system verification") \ | |
2257 \ | |
1166 | 2258 diagnostic(bool, DeferInitialCardMark, false, \ |
2259 "When +ReduceInitialCardMarks, explicitly defer any that " \ | |
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2260 "may arise from new_pre_store_barrier") \ |
1166 | 2261 \ |
0 | 2262 diagnostic(bool, VerifyRememberedSets, false, \ |
2263 "Verify GC remembered sets") \ | |
2264 \ | |
2265 diagnostic(bool, VerifyObjectStartArray, true, \ | |
2266 "Verify GC object start array if verify before/after") \ | |
2267 \ | |
2268 product(bool, DisableExplicitGC, false, \ | |
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2269 "Ignore calls to System.gc()") \ |
0 | 2270 \ |
2271 notproduct(bool, CheckMemoryInitialization, false, \ | |
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|
2272 "Check memory initialization") \ |
0 | 2273 \ |
2274 product(bool, CollectGen0First, false, \ | |
2275 "Collect youngest generation before each full GC") \ | |
2276 \ | |
2277 diagnostic(bool, BindCMSThreadToCPU, false, \ | |
2278 "Bind CMS Thread to CPU if possible") \ | |
2279 \ | |
2280 diagnostic(uintx, CPUForCMSThread, 0, \ | |
2281 "When BindCMSThreadToCPU is true, the CPU to bind CMS thread to") \ | |
2282 \ | |
2283 product(bool, BindGCTaskThreadsToCPUs, false, \ | |
2284 "Bind GCTaskThreads to CPUs if possible") \ | |
2285 \ | |
2286 product(bool, UseGCTaskAffinity, false, \ | |
2287 "Use worker affinity when asking for GCTasks") \ | |
2288 \ | |
2289 product(uintx, ProcessDistributionStride, 4, \ | |
2290 "Stride through processors when distributing processes") \ | |
2291 \ | |
2292 product(uintx, CMSCoordinatorYieldSleepCount, 10, \ | |
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|
2293 "Number of times the coordinator GC thread will sleep while " \ |
0 | 2294 "yielding before giving up and resuming GC") \ |
2295 \ | |
2296 product(uintx, CMSYieldSleepCount, 0, \ | |
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|
2297 "Number of times a GC thread (minus the coordinator) " \ |
0 | 2298 "will sleep while yielding before giving up and resuming GC") \ |
2299 \ | |
2300 /* gc tracing */ \ | |
2301 manageable(bool, PrintGC, false, \ | |
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2302 "Print message at garbage collection") \ |
0 | 2303 \ |
2304 manageable(bool, PrintGCDetails, false, \ | |
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2305 "Print more details at garbage collection") \ |
0 | 2306 \ |
2307 manageable(bool, PrintGCDateStamps, false, \ | |
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|
2308 "Print date stamps at garbage collection") \ |
0 | 2309 \ |
2310 manageable(bool, PrintGCTimeStamps, false, \ | |
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2311 "Print timestamps at garbage collection") \ |
0 | 2312 \ |
20190
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|
2313 manageable(bool, PrintGCID, false, \ |
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|
2314 "Print an identifier for each garbage collection") \ |
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|
2315 \ |
0 | 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 \ | |
20375
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|
2339 product(bool, IgnoreEmptyClassPaths, false, \ |
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|
2340 "Ignore empty path elements in -classpath") \ |
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|
2341 \ |
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|
2342 product(bool, TraceClassPaths, false, \ |
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|
2343 "Trace processing of class paths") \ |
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|
2344 \ |
0 | 2345 product_rw(bool, TraceClassLoading, false, \ |
2346 "Trace all classes loaded") \ | |
2347 \ | |
2348 product(bool, TraceClassLoadingPreorder, false, \ | |
2349 "Trace all classes loaded in order referenced (not loaded)") \ | |
2350 \ | |
2351 product_rw(bool, TraceClassUnloading, false, \ | |
2352 "Trace unloading of classes") \ | |
2353 \ | |
2354 product_rw(bool, TraceLoaderConstraints, false, \ | |
2355 "Trace loader constraints") \ | |
2356 \ | |
6725
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|
2357 develop(bool, TraceClassLoaderData, false, \ |
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|
2358 "Trace class loader loader_data lifetime") \ |
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|
2359 \ |
7446
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|
2360 product(uintx, InitialBootClassLoaderMetaspaceSize, \ |
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7428
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changeset
|
2361 NOT_LP64(2200*K) LP64_ONLY(4*M), \ |
6725
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|
2362 "Initial size of the boot class loader data metaspace") \ |
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|
2363 \ |
0 | 2364 product(bool, TraceGen0Time, false, \ |
2365 "Trace accumulated time for Gen 0 collection") \ | |
2366 \ | |
2367 product(bool, TraceGen1Time, false, \ | |
2368 "Trace accumulated time for Gen 1 collection") \ | |
2369 \ | |
2370 product(bool, PrintTenuringDistribution, false, \ | |
2371 "Print tenuring age information") \ | |
2372 \ | |
2373 product_rw(bool, PrintHeapAtGC, false, \ | |
2374 "Print heap layout before and after each GC") \ | |
2375 \ | |
838
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|
2376 product_rw(bool, PrintHeapAtGCExtended, false, \ |
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2377 "Print extended information about the layout of the heap " \ |
838
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|
2378 "when -XX:+PrintHeapAtGC is set") \ |
0316eac49d5a
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|
2379 \ |
0 | 2380 product(bool, PrintHeapAtSIGBREAK, true, \ |
2381 "Print heap layout in response to SIGBREAK") \ | |
2382 \ | |
615
c6c601a0f2d6
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diff
changeset
|
2383 manageable(bool, PrintClassHistogramBeforeFullGC, false, \ |
c6c601a0f2d6
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570
diff
changeset
|
2384 "Print a class histogram before any major stop-world GC") \ |
c6c601a0f2d6
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570
diff
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|
2385 \ |
c6c601a0f2d6
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diff
changeset
|
2386 manageable(bool, PrintClassHistogramAfterFullGC, false, \ |
c6c601a0f2d6
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changeset
|
2387 "Print a class histogram after any major stop-world GC") \ |
c6c601a0f2d6
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changeset
|
2388 \ |
0 | 2389 manageable(bool, PrintClassHistogram, false, \ |
2390 "Print a histogram of class instances") \ | |
2391 \ | |
2392 develop(bool, TraceWorkGang, false, \ | |
2393 "Trace activities of work gangs") \ | |
2394 \ | |
2395 product(bool, TraceParallelOldGCTasks, false, \ | |
2396 "Trace multithreaded GC activity") \ | |
2397 \ | |
2398 develop(bool, TraceBlockOffsetTable, false, \ | |
2399 "Print BlockOffsetTable maps") \ | |
2400 \ | |
2401 develop(bool, TraceCardTableModRefBS, false, \ | |
2402 "Print CardTableModRefBS maps") \ | |
2403 \ | |
2404 develop(bool, TraceGCTaskManager, false, \ | |
2405 "Trace actions of the GC task manager") \ | |
2406 \ | |
2407 develop(bool, TraceGCTaskQueue, false, \ | |
2408 "Trace actions of the GC task queues") \ | |
2409 \ | |
6818 | 2410 diagnostic(bool, TraceGCTaskThread, false, \ |
0 | 2411 "Trace actions of the GC task threads") \ |
2412 \ | |
2413 product(bool, PrintParallelOldGCPhaseTimes, false, \ | |
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|
2414 "Print the time taken by each phase in ParallelOldGC " \ |
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|
2415 "(PrintGCDetails must also be enabled)") \ |
0 | 2416 \ |
2417 develop(bool, TraceParallelOldGCMarkingPhase, false, \ | |
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|
2418 "Trace marking phase in ParallelOldGC") \ |
0 | 2419 \ |
2420 develop(bool, TraceParallelOldGCSummaryPhase, false, \ | |
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|
2421 "Trace summary phase in ParallelOldGC") \ |
0 | 2422 \ |
2423 develop(bool, TraceParallelOldGCCompactionPhase, false, \ | |
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|
2424 "Trace compaction phase in ParallelOldGC") \ |
0 | 2425 \ |
2426 develop(bool, TraceParallelOldGCDensePrefix, false, \ | |
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|
2427 "Trace dense prefix computation for ParallelOldGC") \ |
0 | 2428 \ |
2429 develop(bool, IgnoreLibthreadGPFault, false, \ | |
2430 "Suppress workaround for libthread GP fault") \ | |
2431 \ | |
139
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|
2432 product(bool, PrintJNIGCStalls, false, \ |
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|
2433 "Print diagnostic message when GC is stalled " \ |
139
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|
2434 "by JNI critical section") \ |
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|
2435 \ |
10405 | 2436 experimental(double, ObjectCountCutOffPercent, 0.5, \ |
2437 "The percentage of the used heap that the instances of a class " \ | |
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|
2438 "must occupy for the class to generate a trace event") \ |
10405 | 2439 \ |
3767
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|
2440 /* GC log rotation setting */ \ |
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|
2441 \ |
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|
2442 product(bool, UseGCLogFileRotation, false, \ |
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|
2443 "Rotate gclog files (for long running applications). It requires "\ |
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|
2444 "-Xloggc:<filename>") \ |
3767
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|
2445 \ |
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|
2446 product(uintx, NumberOfGCLogFiles, 0, \ |
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|
2447 "Number of gclog files in rotation " \ |
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|
2448 "(default: 0, no rotation)") \ |
3767
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|
2449 \ |
17827 | 2450 product(uintx, GCLogFileSize, 8*K, \ |
2451 "GC log file size, requires UseGCLogFileRotation. " \ | |
2452 "Set to 0 to only trigger rotation via jcmd") \ | |
3767
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|
2453 \ |
0 | 2454 /* JVMTI heap profiling */ \ |
2455 \ | |
2456 diagnostic(bool, TraceJVMTIObjectTagging, false, \ | |
2457 "Trace JVMTI object tagging calls") \ | |
2458 \ | |
2459 diagnostic(bool, VerifyBeforeIteration, false, \ | |
2460 "Verify memory system before JVMTI iteration") \ | |
2461 \ | |
2462 /* compiler interface */ \ | |
2463 \ | |
2464 develop(bool, CIPrintCompilerName, false, \ | |
2465 "when CIPrint is active, print the name of the active compiler") \ | |
2466 \ | |
2467 develop(bool, CIPrintCompileQueue, false, \ | |
2468 "display the contents of the compile queue whenever a " \ | |
2469 "compilation is enqueued") \ | |
2470 \ | |
2471 develop(bool, CIPrintRequests, false, \ | |
2472 "display every request for compilation") \ | |
2473 \ | |
2474 product(bool, CITime, false, \ | |
2475 "collect timing information for compilation") \ | |
2476 \ | |
2477 develop(bool, CITimeEach, false, \ | |
2478 "display timing information after each successful compilation") \ | |
2479 \ | |
6843 | 2480 develop(bool, CICountOSR, false, \ |
0 | 2481 "use a separate counter when assigning ids to osr compilations") \ |
2482 \ | |
2483 develop(bool, CICompileNatives, true, \ | |
2484 "compile native methods if supported by the compiler") \ | |
2485 \ | |
2486 develop_pd(bool, CICompileOSR, \ | |
2487 "compile on stack replacement methods if supported by the " \ | |
2488 "compiler") \ | |
2489 \ | |
2490 develop(bool, CIPrintMethodCodes, false, \ | |
2491 "print method bytecodes of the compiled code") \ | |
2492 \ | |
2493 develop(bool, CIPrintTypeFlow, false, \ | |
2494 "print the results of ciTypeFlow analysis") \ | |
2495 \ | |
2496 develop(bool, CITraceTypeFlow, false, \ | |
2497 "detailed per-bytecode tracing of ciTypeFlow analysis") \ | |
2498 \ | |
2403 | 2499 develop(intx, OSROnlyBCI, -1, \ |
2500 "OSR only at this bci. Negative values mean exclude that bci") \ | |
2501 \ | |
0 | 2502 /* compiler */ \ |
2503 \ | |
2504 product(intx, CICompilerCount, CI_COMPILER_COUNT, \ | |
2505 "Number of compiler threads to run") \ | |
2506 \ | |
2507 product(intx, CompilationPolicyChoice, 0, \ | |
2508 "which compilation policy (0/1)") \ | |
2509 \ | |
2510 develop(bool, UseStackBanging, true, \ | |
2511 "use stack banging for stack overflow checks (required for " \ | |
2512 "proper StackOverflow handling; disable only to measure cost " \ | |
2513 "of stackbanging)") \ | |
2514 \ | |
2515 develop(bool, UseStrictFP, true, \ | |
2516 "use strict fp if modifier strictfp is set") \ | |
2517 \ | |
2518 develop(bool, GenerateSynchronizationCode, true, \ | |
2519 "generate locking/unlocking code for synchronized methods and " \ | |
2520 "monitors") \ | |
2521 \ | |
2522 develop(bool, GenerateCompilerNullChecks, true, \ | |
2523 "Generate explicit null checks for loads/stores/calls") \ | |
2524 \ | |
2525 develop(bool, GenerateRangeChecks, true, \ | |
2526 "Generate range checks for array accesses") \ | |
2527 \ | |
2528 develop_pd(bool, ImplicitNullChecks, \ | |
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2529 "Generate code for implicit null checks") \ |
0 | 2530 \ |
14440
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2531 product_pd(bool, TrapBasedNullChecks, \ |
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2532 "Generate code for null checks that uses a cmp and trap " \ |
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2533 "instruction raising SIGTRAP. This is only used if an access to" \ |
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2534 "null (+offset) will not raise a SIGSEGV, i.e.," \ |
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2535 "ImplicitNullChecks don't work (PPC64).") \ |
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2536 \ |
0 | 2537 product(bool, PrintSafepointStatistics, false, \ |
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2538 "Print statistics about safepoint synchronization") \ |
0 | 2539 \ |
2540 product(intx, PrintSafepointStatisticsCount, 300, \ | |
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2541 "Total number of safepoint statistics collected " \ |
0 | 2542 "before printing them out") \ |
2543 \ | |
2544 product(intx, PrintSafepointStatisticsTimeout, -1, \ | |
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2545 "Print safepoint statistics only when safepoint takes " \ |
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2546 "more than PrintSafepointSatisticsTimeout in millis") \ |
0 | 2547 \ |
1321
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2548 product(bool, TraceSafepointCleanupTime, false, \ |
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2549 "Print the break down of clean up tasks performed during " \ |
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2550 "safepoint") \ |
1321
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2551 \ |
0 | 2552 product(bool, Inline, true, \ |
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2553 "Enable inlining") \ |
0 | 2554 \ |
2555 product(bool, ClipInlining, true, \ | |
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2556 "Clip inlining if aggregate method exceeds DesiredMethodLimit") \ |
0 | 2557 \ |
2558 develop(bool, UseCHA, true, \ | |
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2559 "Enable CHA") \ |
0 | 2560 \ |
2561 product(bool, UseTypeProfile, true, \ | |
2562 "Check interpreter profile for historically monomorphic calls") \ | |
2563 \ | |
2564 notproduct(bool, TimeCompiler, false, \ | |
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2565 "Time the compiler") \ |
0 | 2566 \ |
2567 diagnostic(bool, PrintInlining, false, \ | |
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2568 "Print inlining optimizations") \ |
0 | 2569 \ |
643
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|
2570 product(bool, UsePopCountInstruction, false, \ |
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2571 "Use population count instruction") \ |
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2572 \ |
0 | 2573 develop(bool, EagerInitialization, false, \ |
2574 "Eagerly initialize classes if possible") \ | |
2575 \ | |
2576 develop(bool, TraceMethodReplacement, false, \ | |
2577 "Print when methods are replaced do to recompilation") \ | |
2578 \ | |
2579 develop(bool, PrintMethodFlushing, false, \ | |
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2580 "Print the nmethods being flushed") \ |
0 | 2581 \ |
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|
2582 diagnostic(bool, PrintMethodFlushingStatistics, false, \ |
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|
2583 "print statistics about method flushing") \ |
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|
2584 \ |
0 | 2585 develop(bool, UseRelocIndex, false, \ |
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2586 "Use an index to speed random access to relocations") \ |
0 | 2587 \ |
2588 develop(bool, StressCodeBuffers, false, \ | |
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2589 "Exercise code buffer expansion and other rare state changes") \ |
0 | 2590 \ |
2591 diagnostic(bool, DebugNonSafepoints, trueInDebug, \ | |
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2592 "Generate extra debugging information for non-safepoints in " \ |
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2593 "nmethods") \ |
0 | 2594 \ |
4066 | 2595 product(bool, PrintVMOptions, false, \ |
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2596 "Print flags that appeared on the command line") \ |
0 | 2597 \ |
564 | 2598 product(bool, IgnoreUnrecognizedVMOptions, false, \ |
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2599 "Ignore unrecognized VM options") \ |
564 | 2600 \ |
1150 | 2601 product(bool, PrintCommandLineFlags, false, \ |
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2602 "Print flags specified on command line or set by ergonomics") \ |
1150 | 2603 \ |
2604 product(bool, PrintFlagsInitial, false, \ | |
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2605 "Print all VM flags before argument processing and exit VM") \ |
1150 | 2606 \ |
2607 product(bool, PrintFlagsFinal, false, \ | |
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2608 "Print all VM flags after argument and ergonomic processing") \ |
1150 | 2609 \ |
1768
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2610 notproduct(bool, PrintFlagsWithComments, false, \ |
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2611 "Print all VM flags with default values and descriptions and " \ |
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2612 "exit") \ |
1768
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|
2613 \ |
0 | 2614 diagnostic(bool, SerializeVMOutput, true, \ |
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2615 "Use a mutex to serialize output to tty and LogFile") \ |
0 | 2616 \ |
2617 diagnostic(bool, DisplayVMOutput, true, \ | |
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2618 "Display all VM output on the tty, independently of LogVMOutput") \ |
0 | 2619 \ |
12257
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|
2620 diagnostic(bool, LogVMOutput, false, \ |
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|
2621 "Save VM output to LogFile") \ |
0 | 2622 \ |
2623 diagnostic(ccstr, LogFile, NULL, \ | |
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2624 "If LogVMOutput or LogCompilation is on, save VM output to " \ |
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|
2625 "this file [default: ./hotspot_pid%p.log] (%p replaced with pid)")\ |
0 | 2626 \ |
2627 product(ccstr, ErrorFile, NULL, \ | |
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|
2628 "If an error occurs, save the error data to this file " \ |
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|
2629 "[default: ./hs_err_pid%p.log] (%p replaced with pid)") \ |
0 | 2630 \ |
2631 product(bool, DisplayVMOutputToStderr, false, \ | |
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|
2632 "If DisplayVMOutput is true, display all VM output to stderr") \ |
0 | 2633 \ |
2634 product(bool, DisplayVMOutputToStdout, false, \ | |
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|
2635 "If DisplayVMOutput is true, display all VM output to stdout") \ |
0 | 2636 \ |
2637 product(bool, UseHeavyMonitors, false, \ | |
2638 "use heavyweight instead of lightweight Java monitors") \ | |
2639 \ | |
6162 | 2640 product(bool, PrintStringTableStatistics, false, \ |
2641 "print statistics about the StringTable and SymbolTable") \ | |
2642 \ | |
12275
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|
2643 diagnostic(bool, VerifyStringTableAtExit, false, \ |
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|
2644 "verify StringTable contents at exit") \ |
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|
2645 \ |
0 | 2646 notproduct(bool, PrintSymbolTableSizeHistogram, false, \ |
2647 "print histogram of the symbol table") \ | |
2648 \ | |
2649 notproduct(bool, ExitVMOnVerifyError, false, \ | |
2650 "standard exit from VM if bytecode verify error " \ | |
2651 "(only in debug mode)") \ | |
2652 \ | |
2653 notproduct(ccstr, AbortVMOnException, NULL, \ | |
2654 "Call fatal if this exception is thrown. Example: " \ | |
2655 "java -XX:AbortVMOnException=java.lang.NullPointerException Foo") \ | |
2656 \ | |
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|
2657 notproduct(ccstr, AbortVMOnExceptionMessage, NULL, \ |
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|
2658 "Call fatal if the exception pointed by AbortVMOnException " \ |
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|
2659 "has this message") \ |
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2660 \ |
0 | 2661 develop(bool, DebugVtables, false, \ |
2662 "add debugging code to vtable dispatch") \ | |
2663 \ | |
2664 develop(bool, PrintVtables, false, \ | |
2665 "print vtables when printing klass") \ | |
2666 \ | |
2667 notproduct(bool, PrintVtableStats, false, \ | |
2668 "print vtables stats at end of run") \ | |
2669 \ | |
2670 develop(bool, TraceCreateZombies, false, \ | |
2671 "trace creation of zombie nmethods") \ | |
2672 \ | |
2673 notproduct(bool, IgnoreLockingAssertions, false, \ | |
2674 "disable locking assertions (for speed)") \ | |
2675 \ | |
2676 product(bool, RangeCheckElimination, true, \ | |
8860 | 2677 "Eliminate range checks") \ |
0 | 2678 \ |
2679 develop_pd(bool, UncommonNullCast, \ | |
2680 "track occurrences of null in casts; adjust compiler tactics") \ | |
2681 \ | |
2682 develop(bool, TypeProfileCasts, true, \ | |
2683 "treat casts like calls for purposes of type profiling") \ | |
2684 \ | |
2685 develop(bool, DelayCompilationDuringStartup, true, \ | |
2686 "Delay invoking the compiler until main application class is " \ | |
2687 "loaded") \ | |
2688 \ | |
2689 develop(bool, CompileTheWorld, false, \ | |
2690 "Compile all methods in all classes in bootstrap class path " \ | |
2691 "(stress test)") \ | |
2692 \ | |
2693 develop(bool, CompileTheWorldPreloadClasses, true, \ | |
2694 "Preload all classes used by a class before start loading") \ | |
2695 \ | |
1188
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2696 notproduct(intx, CompileTheWorldSafepointInterval, 100, \ |
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2697 "Force a safepoint every n compiles so sweeper can keep up") \ |
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|
2698 \ |
0 | 2699 develop(bool, FillDelaySlots, true, \ |
2700 "Fill delay slots (on SPARC only)") \ | |
2701 \ | |
2702 develop(bool, TimeLivenessAnalysis, false, \ | |
2703 "Time computation of bytecode liveness analysis") \ | |
2704 \ | |
2705 develop(bool, TraceLivenessGen, false, \ | |
2706 "Trace the generation of liveness analysis information") \ | |
2707 \ | |
2708 notproduct(bool, TraceLivenessQuery, false, \ | |
2709 "Trace queries of liveness analysis information") \ | |
2710 \ | |
2711 notproduct(bool, CollectIndexSetStatistics, false, \ | |
2712 "Collect information about IndexSets") \ | |
2713 \ | |
2714 develop(bool, UseLoopSafepoints, true, \ | |
2715 "Generate Safepoint nodes in every loop") \ | |
2716 \ | |
2717 develop(intx, FastAllocateSizeLimit, 128*K, \ | |
2718 /* Note: This value is zero mod 1<<13 for a cheap sparc set. */ \ | |
2719 "Inline allocations larger than this in doublewords must go slow")\ | |
2720 \ | |
2721 product(bool, AggressiveOpts, false, \ | |
2722 "Enable aggressive optimizations - see arguments.cpp") \ | |
2723 \ | |
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2724 product_pd(uintx, TypeProfileLevel, \ |
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|
2725 "=XYZ, with Z: Type profiling of arguments at call; " \ |
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|
2726 "Y: Type profiling of return value at call; " \ |
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|
2727 "X: Type profiling of parameters to methods; " \ |
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|
2728 "X, Y and Z in 0=off ; 1=jsr292 only; 2=all methods") \ |
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|
2729 \ |
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|
2730 product(intx, TypeProfileArgsLimit, 2, \ |
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|
2731 "max number of call arguments to consider for type profiling") \ |
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|
2732 \ |
12962
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|
2733 product(intx, TypeProfileParmsLimit, 2, \ |
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|
2734 "max number of incoming parameters to consider for type profiling"\ |
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|
2735 ", -1 for all") \ |
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|
2736 \ |
0 | 2737 /* statistics */ \ |
2738 develop(bool, CountCompiledCalls, false, \ | |
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|
2739 "Count method invocations") \ |
0 | 2740 \ |
2741 notproduct(bool, CountRuntimeCalls, false, \ | |
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|
2742 "Count VM runtime calls") \ |
0 | 2743 \ |
2744 develop(bool, CountJNICalls, false, \ | |
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|
2745 "Count jni method invocations") \ |
0 | 2746 \ |
2747 notproduct(bool, CountJVMCalls, false, \ | |
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|
2748 "Count jvm method invocations") \ |
0 | 2749 \ |
2750 notproduct(bool, CountRemovableExceptions, false, \ | |
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|
2751 "Count exceptions that could be replaced by branches due to " \ |
0 | 2752 "inlining") \ |
2753 \ | |
2754 notproduct(bool, ICMissHistogram, false, \ | |
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|
2755 "Produce histogram of IC misses") \ |
0 | 2756 \ |
2757 notproduct(bool, PrintClassStatistics, false, \ | |
12836
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|
2758 "Print class statistics at end of run") \ |
0 | 2759 \ |
2760 notproduct(bool, PrintMethodStatistics, false, \ | |
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changeset
|
2761 "Print method statistics at end of run") \ |
0 | 2762 \ |
2763 /* interpreter */ \ | |
2764 develop(bool, ClearInterpreterLocals, false, \ | |
2765 "Always clear local variables of interpreter activations upon " \ | |
2766 "entry") \ | |
2767 \ | |
2768 product_pd(bool, RewriteBytecodes, \ | |
2769 "Allow rewriting of bytecodes (bytecodes are not immutable)") \ | |
2770 \ | |
2771 product_pd(bool, RewriteFrequentPairs, \ | |
2772 "Rewrite frequently used bytecode pairs into a single bytecode") \ | |
2773 \ | |
100
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76
diff
changeset
|
2774 diagnostic(bool, PrintInterpreter, false, \ |
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|
2775 "Print the generated interpreter code") \ |
0 | 2776 \ |
2777 product(bool, UseInterpreter, true, \ | |
2778 "Use interpreter for non-compiled methods") \ | |
2779 \ | |
2780 develop(bool, UseFastSignatureHandlers, true, \ | |
2781 "Use fast signature handlers for native calls") \ | |
2782 \ | |
2783 product(bool, UseLoopCounter, true, \ | |
2784 "Increment invocation counter on backward branch") \ | |
2785 \ | |
2786 product(bool, UseFastEmptyMethods, true, \ | |
2787 "Use fast method entry code for empty methods") \ | |
2788 \ | |
2789 product(bool, UseFastAccessorMethods, true, \ | |
2790 "Use fast method entry code for accessor methods") \ | |
2791 \ | |
2792 product_pd(bool, UseOnStackReplacement, \ | |
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|
2793 "Use on stack replacement, calls runtime if invoc. counter " \ |
b4d8a3d4db73
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changeset
|
2794 "overflows in loop") \ |
0 | 2795 \ |
2796 notproduct(bool, TraceOnStackReplacement, false, \ | |
2797 "Trace on stack replacement") \ | |
2798 \ | |
2799 product_pd(bool, PreferInterpreterNativeStubs, \ | |
2800 "Use always interpreter stubs for native methods invoked via " \ | |
2801 "interpreter") \ | |
2802 \ | |
2803 develop(bool, CountBytecodes, false, \ | |
2804 "Count number of bytecodes executed") \ | |
2805 \ | |
2806 develop(bool, PrintBytecodeHistogram, false, \ | |
2807 "Print histogram of the executed bytecodes") \ | |
2808 \ | |
2809 develop(bool, PrintBytecodePairHistogram, false, \ | |
2810 "Print histogram of the executed bytecode pairs") \ | |
2811 \ | |
100
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76
diff
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|
2812 diagnostic(bool, PrintSignatureHandlers, false, \ |
0 | 2813 "Print code generated for native method signature handlers") \ |
2814 \ | |
2815 develop(bool, VerifyOops, false, \ | |
2816 "Do plausibility checks for oops") \ | |
2817 \ | |
2818 develop(bool, CheckUnhandledOops, false, \ | |
2819 "Check for unhandled oops in VM code") \ | |
2820 \ | |
2821 develop(bool, VerifyJNIFields, trueInDebug, \ | |
2822 "Verify jfieldIDs for instance fields") \ | |
2823 \ | |
2824 notproduct(bool, VerifyJNIEnvThread, false, \ | |
2825 "Verify JNIEnv.thread == Thread::current() when entering VM " \ | |
2826 "from JNI") \ | |
2827 \ | |
2828 develop(bool, VerifyFPU, false, \ | |
2829 "Verify FPU state (check for NaN's, etc.)") \ | |
2830 \ | |
2831 develop(bool, VerifyThread, false, \ | |
2832 "Watch the thread register for corruption (SPARC only)") \ | |
2833 \ | |
2834 develop(bool, VerifyActivationFrameSize, false, \ | |
2835 "Verify that activation frame didn't become smaller than its " \ | |
2836 "minimal size") \ | |
2837 \ | |
2838 develop(bool, TraceFrequencyInlining, false, \ | |
2839 "Trace frequency based inlining") \ | |
2840 \ | |
2841 develop_pd(bool, InlineIntrinsics, \ | |
12836
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|
2842 "Inline intrinsics that can be statically resolved") \ |
0 | 2843 \ |
2844 product_pd(bool, ProfileInterpreter, \ | |
12836
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|
2845 "Profile at the bytecode level during interpretation") \ |
0 | 2846 \ |
14420
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diff
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|
2847 develop(bool, TraceProfileInterpreter, false, \ |
abe03600372a
8024468: PPC64 (part 201): cppInterpreter: implement bytecode profiling
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14412
diff
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|
2848 "Trace profiling at the bytecode level during interpretation. " \ |
abe03600372a
8024468: PPC64 (part 201): cppInterpreter: implement bytecode profiling
goetz
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14412
diff
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|
2849 "This outputs the profiling information collected to improve " \ |
abe03600372a
8024468: PPC64 (part 201): cppInterpreter: implement bytecode profiling
goetz
parents:
14412
diff
changeset
|
2850 "jit compilation.") \ |
abe03600372a
8024468: PPC64 (part 201): cppInterpreter: implement bytecode profiling
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parents:
14412
diff
changeset
|
2851 \ |
0 | 2852 develop_pd(bool, ProfileTraps, \ |
2853 "Profile deoptimization traps at the bytecode level") \ | |
2854 \ | |
2855 product(intx, ProfileMaturityPercentage, 20, \ | |
2856 "number of method invocations/branches (expressed as % of " \ | |
2857 "CompileThreshold) before using the method's profile") \ | |
2858 \ | |
2859 develop(bool, PrintMethodData, false, \ | |
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|
2860 "Print the results of +ProfileInterpreter at end of run") \ |
0 | 2861 \ |
2862 develop(bool, VerifyDataPointer, trueInDebug, \ | |
2863 "Verify the method data pointer during interpreter profiling") \ | |
2864 \ | |
2865 develop(bool, VerifyCompiledCode, false, \ | |
2866 "Include miscellaneous runtime verifications in nmethod code; " \ | |
1064 | 2867 "default off because it disturbs nmethod size heuristics") \ |
0 | 2868 \ |
1119
547f81740344
6361589: Print out stack trace for target thread of GC crash
minqi
parents:
1064
diff
changeset
|
2869 notproduct(bool, CrashGCForDumpingJavaThread, false, \ |
547f81740344
6361589: Print out stack trace for target thread of GC crash
minqi
parents:
1064
diff
changeset
|
2870 "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
|
2871 "Test only") \ |
0 | 2872 \ |
2873 /* compilation */ \ | |
2874 product(bool, UseCompiler, true, \ | |
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|
2875 "Use Just-In-Time compilation") \ |
0 | 2876 \ |
2877 develop(bool, TraceCompilationPolicy, false, \ | |
2878 "Trace compilation policy") \ | |
2879 \ | |
2880 develop(bool, TimeCompilationPolicy, false, \ | |
2881 "Time the compilation policy") \ | |
2882 \ | |
2883 product(bool, UseCounterDecay, true, \ | |
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|
2884 "Adjust recompilation counters") \ |
0 | 2885 \ |
2886 develop(intx, CounterHalfLifeTime, 30, \ | |
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|
2887 "Half-life time of invocation counters (in seconds)") \ |
0 | 2888 \ |
2889 develop(intx, CounterDecayMinIntervalLength, 500, \ | |
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|
2890 "The minimum interval (in milliseconds) between invocation of " \ |
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|
2891 "CounterDecay") \ |
0 | 2892 \ |
2893 product(bool, AlwaysCompileLoopMethods, false, \ | |
12836
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|
2894 "When using recompilation, never interpret methods " \ |
0 | 2895 "containing loops") \ |
2896 \ | |
2897 product(bool, DontCompileHugeMethods, true, \ | |
12836
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|
2898 "Do not compile methods > HugeMethodLimit") \ |
0 | 2899 \ |
2900 /* Bytecode escape analysis estimation. */ \ | |
2901 product(bool, EstimateArgEscape, true, \ | |
2902 "Analyze bytecodes to estimate escape state of arguments") \ | |
2903 \ | |
2904 product(intx, BCEATraceLevel, 0, \ | |
2905 "How much tracing to do of bytecode escape analysis estimates") \ | |
2906 \ | |
2907 product(intx, MaxBCEAEstimateLevel, 5, \ | |
12836
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|
2908 "Maximum number of nested calls that are analyzed by BC EA") \ |
0 | 2909 \ |
2910 product(intx, MaxBCEAEstimateSize, 150, \ | |
12836
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|
2911 "Maximum bytecode size of a method to be analyzed by BC EA") \ |
0 | 2912 \ |
2913 product(intx, AllocatePrefetchStyle, 1, \ | |
2914 "0 = no prefetch, " \ | |
2915 "1 = prefetch instructions for each allocation, " \ | |
1367
9e321dcfa5b7
6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents:
1366
diff
changeset
|
2916 "2 = use TLAB watermark to gate allocation prefetch, " \ |
9e321dcfa5b7
6940726: Use BIS instruction for allocation prefetch on Sparc
kvn
parents:
1366
diff
changeset
|
2917 "3 = use BIS instruction on Sparc for allocation prefetch") \ |
0 | 2918 \ |
2919 product(intx, AllocatePrefetchDistance, -1, \ | |
2920 "Distance to prefetch ahead of allocation pointer") \ | |
2921 \ | |
3854 | 2922 product(intx, AllocatePrefetchLines, 3, \ |
2923 "Number of lines to prefetch ahead of array allocation pointer") \ | |
2924 \ | |
2925 product(intx, AllocateInstancePrefetchLines, 1, \ | |
12836
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|
2926 "Number of lines to prefetch ahead of instance allocation " \ |
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changeset
|
2927 "pointer") \ |
0 | 2928 \ |
2929 product(intx, AllocatePrefetchStepSize, 16, \ | |
2930 "Step size in bytes of sequential prefetch instructions") \ | |
2931 \ | |
2932 product(intx, AllocatePrefetchInstr, 0, \ | |
2933 "Prefetch instruction to prefetch ahead of allocation pointer") \ | |
2934 \ | |
2935 /* deoptimization */ \ | |
2936 develop(bool, TraceDeoptimization, false, \ | |
2937 "Trace deoptimization") \ | |
2938 \ | |
2939 develop(bool, DebugDeoptimization, false, \ | |
2940 "Tracing various information while debugging deoptimization") \ | |
2941 \ | |
2942 product(intx, SelfDestructTimer, 0, \ | |
2943 "Will cause VM to terminate after a given time (in minutes) " \ | |
2944 "(0 means off)") \ | |
2945 \ | |
2946 product(intx, MaxJavaStackTraceDepth, 1024, \ | |
12836
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|
2947 "The maximum number of lines in the stack trace for Java " \ |
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|
2948 "exceptions (0 means all)") \ |
0 | 2949 \ |
3328
277d0f6ca64d
7005503: Make GuaranteedSafepointInterval a diagnostic flag
kevinw
parents:
3255
diff
changeset
|
2950 NOT_EMBEDDED(diagnostic(intx, GuaranteedSafepointInterval, 1000, \ |
0 | 2951 "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
|
2952 "(0 means none)")) \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
2953 \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
2954 EMBEDDED_ONLY(product(intx, GuaranteedSafepointInterval, 0, \ |
b92c45f2bc75
7016023: Enable building ARM and PPC from src/closed repository
bobv
parents:
2177
diff
changeset
|
2955 "Guarantee a safepoint (at least) every so many milliseconds " \ |
b92c45f2bc75
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bobv
parents:
2177
diff
changeset
|
2956 "(0 means none)")) \ |
0 | 2957 \ |
2958 product(intx, SafepointTimeoutDelay, 10000, \ | |
2959 "Delay in milliseconds for option SafepointTimeout") \ | |
2960 \ | |
6818 | 2961 product(intx, NmethodSweepFraction, 16, \ |
0 | 2962 "Number of invocations of sweeper to cover all nmethods") \ |
2963 \ | |
1538
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1513
diff
changeset
|
2964 product(intx, NmethodSweepCheckInterval, 5, \ |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1513
diff
changeset
|
2965 "Compilers wake up every n seconds to possibly sweep nmethods") \ |
bfe29ec02863
6950075: nmethod sweeper should operate concurrently
never
parents:
1513
diff
changeset
|
2966 \ |
12324
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12322
diff
changeset
|
2967 product(intx, NmethodSweepActivity, 10, \ |
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12322
diff
changeset
|
2968 "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
|
2969 "result in more aggressive sweeping") \ |
510fbd28919c
8020151: PSR:PERF Large performance regressions when code cache is filled
anoll
parents:
12322
diff
changeset
|
2970 \ |
3384
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
2971 notproduct(bool, LogSweeper, false, \ |
12836
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|
2972 "Keep a ring buffer of sweeper activity") \ |
3384
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
2973 \ |
f52ed367b66d
6996747: SIGSEGV in nmethod::cleanup_inline_caches / CompiledIC::verify
never
parents:
3373
diff
changeset
|
2974 notproduct(intx, SweeperLogEntries, 1024, \ |
12836
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changeset
|
2975 "Number of records in the ring buffer of sweeper activity") \ |
3384
f52ed367b66d
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never
parents:
3373
diff
changeset
|
2976 \ |
0 | 2977 notproduct(intx, MemProfilingInterval, 500, \ |
2978 "Time between each invocation of the MemProfiler") \ | |
2979 \ | |
2980 develop(intx, MallocCatchPtr, -1, \ | |
2981 "Hit breakpoint when mallocing/freeing this pointer") \ | |
2982 \ | |
2983 notproduct(intx, AssertRepeat, 1, \ | |
2984 "number of times to evaluate expression in assert " \ | |
2985 "(to estimate overhead); only works with -DUSE_REPEATED_ASSERTS") \ | |
2986 \ | |
2987 notproduct(ccstrlist, SuppressErrorAt, "", \ | |
2988 "List of assertions (file:line) to muzzle") \ | |
2989 \ | |
2990 notproduct(uintx, HandleAllocationLimit, 1024, \ | |
2991 "Threshold for HandleMark allocation when +TraceHandleAllocation "\ | |
2992 "is used") \ | |
2993 \ | |
2994 develop(uintx, TotalHandleAllocationLimit, 1024, \ | |
2995 "Threshold for total handle allocation when " \ | |
2996 "+TraceHandleAllocation is used") \ | |
2997 \ | |
2998 develop(intx, StackPrintLimit, 100, \ | |
2999 "number of stack frames to print in VM-level stack dump") \ | |
3000 \ | |
3001 notproduct(intx, MaxElementPrintSize, 256, \ | |
3002 "maximum number of elements to print") \ | |
3003 \ | |
3004 notproduct(intx, MaxSubklassPrintSize, 4, \ | |
3005 "maximum number of subklasses to print when printing klass") \ | |
3006 \ | |
1157
c3b315a0d58a
6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents:
1150
diff
changeset
|
3007 product(intx, MaxInlineLevel, 9, \ |
0 | 3008 "maximum number of nested calls that are inlined") \ |
3009 \ | |
1157
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6912063: inlining parameters need to be adjusted for some uses of the JVM
jrose
parents:
1150
diff
changeset
|
3010 product(intx, MaxRecursiveInlineLevel, 1, \ |
0 | 3011 "maximum number of nested recursive calls that are inlined") \ |
3012 \ | |
13081
e74074c34312
8028159: C2: compiler stack overflow during inlining of @ForceInline methods
vlivanov
parents:
13074
diff
changeset
|
3013 develop(intx, MaxForceInlineLevel, 100, \ |
17819
f47fa50d9b9c
8035887: VM crashes trying to force inlining the recursive call
vlivanov
parents:
17810
diff
changeset
|
3014 "maximum number of nested calls that are forced for inlining " \ |
f47fa50d9b9c
8035887: VM crashes trying to force inlining the recursive call
vlivanov
parents:
17810
diff
changeset
|
3015 "(using CompilerOracle or marked w/ @ForceInline)") \ |
13081
e74074c34312
8028159: C2: compiler stack overflow during inlining of @ForceInline methods
vlivanov
parents:
13074
diff
changeset
|
3016 \ |
675 | 3017 product_pd(intx, InlineSmallCode, \ |
0 | 3018 "Only inline already compiled methods if their code size is " \ |
3019 "less than this") \ | |
3020 \ | |
3021 product(intx, MaxInlineSize, 35, \ | |
12836
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|
3022 "The maximum bytecode size of a method to be inlined") \ |
0 | 3023 \ |
3024 product_pd(intx, FreqInlineSize, \ | |
12836
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|
3025 "The maximum bytecode size of a frequent method to be inlined") \ |
0 | 3026 \ |
1157
c3b315a0d58a
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jrose
parents:
1150
diff
changeset
|
3027 product(intx, MaxTrivialSize, 6, \ |
12836
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changeset
|
3028 "The maximum bytecode size of a trivial method to be inlined") \ |
0 | 3029 \ |
1157
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jrose
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1150
diff
changeset
|
3030 product(intx, MinInliningThreshold, 250, \ |
12836
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changeset
|
3031 "The minimum invocation count a method needs to have to be " \ |
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diff
changeset
|
3032 "inlined") \ |
0 | 3033 \ |
3034 develop(intx, MethodHistogramCutoff, 100, \ | |
12836
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changeset
|
3035 "The cutoff value for method invocation histogram (+CountCalls)") \ |
0 | 3036 \ |
3037 develop(intx, ProfilerNumberOfInterpretedMethods, 25, \ | |
12836
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changeset
|
3038 "Number of interpreted methods to show in profile") \ |
0 | 3039 \ |
3040 develop(intx, ProfilerNumberOfCompiledMethods, 25, \ | |
12836
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12287
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changeset
|
3041 "Number of compiled methods to show in profile") \ |
0 | 3042 \ |
3043 develop(intx, ProfilerNumberOfStubMethods, 25, \ | |
12836
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tamao
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12287
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changeset
|
3044 "Number of stub methods to show in profile") \ |
0 | 3045 \ |
3046 develop(intx, ProfilerNumberOfRuntimeStubNodes, 25, \ | |
12836
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12287
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changeset
|
3047 "Number of runtime stub nodes to show in profile") \ |
0 | 3048 \ |
3049 product(intx, ProfileIntervalsTicks, 100, \ | |
12836
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changeset
|
3050 "Number of ticks between printing of interval profile " \ |
0 | 3051 "(+ProfileIntervals)") \ |
3052 \ | |
3053 notproduct(intx, ScavengeALotInterval, 1, \ | |
3054 "Interval between which scavenge will occur with +ScavengeALot") \ | |
3055 \ | |
3056 notproduct(intx, FullGCALotInterval, 1, \ | |
3057 "Interval between which full gc will occur with +FullGCALot") \ | |
3058 \ | |
3059 notproduct(intx, FullGCALotStart, 0, \ | |
3060 "For which invocation to start FullGCAlot") \ | |
3061 \ | |
3062 notproduct(intx, FullGCALotDummies, 32*K, \ | |
3063 "Dummy object allocated with +FullGCALot, forcing all objects " \ | |
3064 "to move") \ | |
3065 \ | |
3066 develop(intx, DontYieldALotInterval, 10, \ | |
3067 "Interval between which yields will be dropped (milliseconds)") \ | |
3068 \ | |
3069 develop(intx, MinSleepInterval, 1, \ | |
3070 "Minimum sleep() interval (milliseconds) when " \ | |
12836
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12287
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|
3071 "ConvertSleepToYield is off (used for Solaris)") \ |
0 | 3072 \ |
3073 develop(intx, ProfilerPCTickThreshold, 15, \ | |
3074 "Number of ticks in a PC buckets to be a hotspot") \ | |
3075 \ | |
3076 notproduct(intx, DeoptimizeALotInterval, 5, \ | |
3077 "Number of exits until DeoptimizeALot kicks in") \ | |
3078 \ | |
3079 notproduct(intx, ZombieALotInterval, 5, \ | |
3080 "Number of exits until ZombieALot kicks in") \ | |
3081 \ | |
3082 diagnostic(intx, MallocVerifyInterval, 0, \ | |
12836
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12287
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|
3083 "If non-zero, verify C heap after every N calls to " \ |
0 | 3084 "malloc/realloc/free") \ |
3085 \ | |
3086 diagnostic(intx, MallocVerifyStart, 0, \ | |
12836
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12287
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changeset
|
3087 "If non-zero, start verifying C heap after Nth call to " \ |
0 | 3088 "malloc/realloc/free") \ |
3089 \ | |
8802
eca90b8a06eb
7030610: runtime/6878713/Test6878713.sh fails Error. failed to clean up files after test
rdurbin
parents:
8706
diff
changeset
|
3090 diagnostic(uintx, MallocMaxTestWords, 0, \ |
12836
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|
3091 "If non-zero, maximum number of words that malloc/realloc can " \ |
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|
3092 "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
|
3093 \ |
6818 | 3094 product(intx, TypeProfileWidth, 2, \ |
12836
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|
3095 "Number of receiver types to record in call/cast profile") \ |
0 | 3096 \ |
3097 develop(intx, BciProfileWidth, 2, \ | |
12836
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|
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 \ | |
17728
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changeset
|
3109 experimental(intx, PerMethodSpecTrapLimit, 5000, \ |
b8413a9cbb84
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|
3110 "Limit on speculative traps (of one kind) in a method (includes inlines)") \ |
b8413a9cbb84
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roland
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|
3111 \ |
0 | 3112 product(intx, PerBytecodeTrapLimit, 4, \ |
3113 "Limit on traps (of one kind) at a particular BCI") \ | |
3114 \ | |
17728
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roland
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|
3115 experimental(intx, SpecTrapLimitExtraEntries, 3, \ |
b8413a9cbb84
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|
3116 "Extra method data trap entries for speculation") \ |
b8413a9cbb84
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|
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
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8006088: Incompatible heap size flags accepted by VM
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10208
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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, \ | |
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|
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, \ |
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|
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
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6633
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|
3186 product_pd(uintx, MetaspaceSize, \ |
da91efe96a93
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6633
diff
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|
3187 "Initial size of Metaspaces (in bytes)") \ |
da91efe96a93
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6633
diff
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|
3188 \ |
da91efe96a93
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6633
diff
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|
3189 product(uintx, MaxMetaspaceSize, max_uintx, \ |
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|
3190 "Maximum size of Metaspaces (in bytes)") \ |
da91efe96a93
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6633
diff
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|
3191 \ |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
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12154
diff
changeset
|
3192 product(uintx, CompressedClassSpaceSize, 1*G, \ |
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
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12154
diff
changeset
|
3193 "Maximum size of class area in Metaspace when compressed " \ |
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
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12154
diff
changeset
|
3194 "class pointers are used") \ |
0 | 3195 \ |
17648
a034dc5e910b
8028391: Make the Min/MaxHeapFreeRatio flags manageable
jwilhelm
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17625
diff
changeset
|
3196 manageable(uintx, MinHeapFreeRatio, 40, \ |
12892
9c8289162268
8024776: Max/MinHeapFreeRatio descriptions should be more precise
jwilhelm
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12838
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|
3197 "The minimum percentage of heap free after GC to avoid expansion."\ |
17648
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jwilhelm
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|
3198 " For most GCs this applies to the old generation. In G1 and" \ |
a034dc5e910b
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jwilhelm
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17625
diff
changeset
|
3199 " ParallelGC it applies to the whole heap.") \ |
a034dc5e910b
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jwilhelm
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17625
diff
changeset
|
3200 \ |
a034dc5e910b
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jwilhelm
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17625
diff
changeset
|
3201 manageable(uintx, MaxHeapFreeRatio, 70, \ |
12892
9c8289162268
8024776: Max/MinHeapFreeRatio descriptions should be more precise
jwilhelm
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12838
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|
3202 "The maximum percentage of heap free after GC to avoid shrinking."\ |
17648
a034dc5e910b
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jwilhelm
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17625
diff
changeset
|
3203 " For most GCs this applies to the old generation. In G1 and" \ |
a034dc5e910b
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jwilhelm
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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
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|
3210 "The minimum change in heap space due to GC (in bytes)") \ |
0 | 3211 \ |
6818 | 3212 product(uintx, MinMetaspaceExpansion, ScaleForWordSize(256*K), \ |
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|
3213 "The minimum expansion of Metaspace (in bytes)") \ |
8040
a83cd101fd62
8005452: NPG: Create new flags for Metaspace resizing policy
jmasa
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8035
diff
changeset
|
3214 \ |
a83cd101fd62
8005452: NPG: Create new flags for Metaspace resizing policy
jmasa
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8035
diff
changeset
|
3215 product(uintx, MinMetaspaceFreeRatio, 40, \ |
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|
3216 "The minimum percentage of Metaspace free after GC to avoid " \ |
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|
3217 "expansion") \ |
8040
a83cd101fd62
8005452: NPG: Create new flags for Metaspace resizing policy
jmasa
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8035
diff
changeset
|
3218 \ |
a83cd101fd62
8005452: NPG: Create new flags for Metaspace resizing policy
jmasa
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8035
diff
changeset
|
3219 product(uintx, MaxMetaspaceFreeRatio, 70, \ |
12836
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|
3220 "The maximum percentage of Metaspace free after GC to avoid " \ |
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|
3221 "shrinking") \ |
0 | 3222 \ |
6818 | 3223 product(uintx, MaxMetaspaceExpansion, ScaleForWordSize(4*M), \ |
12836
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|
3224 "The maximum expansion of Metaspace without full GC (in bytes)") \ |
0 | 3225 \ |
10287
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|
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
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|
3246 "Percentage (0-100) of the old gen allowed as dead wood. " \ |
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|
3247 "Serial mark sweep treats this as both the minimum and maximum " \ |
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|
3248 "value. " \ |
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|
3249 "CMS uses this value only if it falls back to mark sweep. " \ |
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|
3250 "Par compact uses a variable scale based on the density of the " \ |
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|
3251 "generation and treats this as the maximum value when the heap " \ |
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|
3252 "is either completely full or completely empty. Par compact " \ |
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|
3253 "also has a smaller default value; see arguments.cpp.") \ |
0 | 3254 \ |
10287
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|
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, \ | |
12836
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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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|
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 " \ |
b4d8a3d4db73
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changeset
|
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 */ \ | |
14391 | 3323 /* ppc64 has large code-entry alignment. */ \ |
3324 develop(uintx, CodeCacheSegmentSize, 64 PPC64_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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anoll
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10405
diff
changeset
|
3337 develop_pd(uintx, CodeCacheMinimumUseSpace, \ |
738e04fb1232
8014972: Crash with specific values for -XX:InitialCodeCacheSize=500K -XX:ReservedCodeCacheSize=500k
anoll
parents:
10405
diff
changeset
|
3338 "Minimum code cache size (in bytes) required to start VM.") \ |
738e04fb1232
8014972: Crash with specific values for -XX:InitialCodeCacheSize=500K -XX:ReservedCodeCacheSize=500k
anoll
parents:
10405
diff
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, \ | |
12836
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changeset
|
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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tamao
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changeset
|
3350 "Minimum number of segments in a code cache block") \ |
0 | 3351 \ |
3352 notproduct(bool, ExitOnFullCodeCache, false, \ | |
12836
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parents:
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changeset
|
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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changeset
|
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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changeset
|
3371 "The id of the first compilation to permit") \ |
0 | 3372 \ |
17625 | 3373 develop(intx, CIStop, max_jint, \ |
12836
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|
3374 "The id of the last compilation to permit") \ |
0 | 3375 \ |
17625 | 3376 develop(intx, CIStartOSR, 0, \ |
12836
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changeset
|
3377 "The id of the first osr compilation to permit " \ |
0 | 3378 "(CICountOSR must be on)") \ |
3379 \ | |
17625 | 3380 develop(intx, CIStopOSR, max_jint, \ |
12836
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changeset
|
3381 "The id of the last osr compilation to permit " \ |
0 | 3382 "(CICountOSR must be on)") \ |
3383 \ | |
17625 | 3384 develop(intx, CIBreakAtOSR, -1, \ |
12836
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|
3385 "The id of osr compilation to break at") \ |
0 | 3386 \ |
17625 | 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
6830717: replay of compilations would help with debugging
minqi
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diff
changeset
|
3399 develop(bool, ReplayCompiles, false, \ |
bd7a7ce2e264
6830717: replay of compilations would help with debugging
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6935
diff
changeset
|
3400 "Enable replay of compilations from ReplayDataFile") \ |
bd7a7ce2e264
6830717: replay of compilations would help with debugging
minqi
parents:
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
changeset
|
3405 \ |
17622 | 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
parents:
6935
diff
changeset
|
3410 develop(intx, ReplaySuppressInitializers, 2, \ |
12836
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changeset
|
3411 "Control handling of class initialization during replay: " \ |
b4d8a3d4db73
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|
3412 "0 - don't do anything special; " \ |
b4d8a3d4db73
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|
3413 "1 - treat all class initializers as empty; " \ |
b4d8a3d4db73
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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
6830717: replay of compilations would help with debugging
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parents:
6935
diff
changeset
|
3416 " pretend they are empty after starting replay") \ |
bd7a7ce2e264
6830717: replay of compilations would help with debugging
minqi
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6935
diff
changeset
|
3417 \ |
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6935
diff
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
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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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changeset
|
3422 "Record replay data for crashing compiler threads") \ |
6972
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minqi
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6935
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changeset
|
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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changeset
|
3445 " NORM_PRIORITY map to lower native priority values. On "\ |
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8010506: Typos and errors in descriptions of vm options in globals.hpp
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|
3446 " Windows applications are allowed to use higher native "\ |
b4d8a3d4db73
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changeset
|
3447 " priorities. However, with ThreadPriorityPolicy=0, VM will "\ |
b4d8a3d4db73
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|
3448 " not use the highest possible native priority, "\ |
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changeset
|
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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changeset
|
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
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phh
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changeset
|
3463 "Print priority changes") \ |
0 | 3464 \ |
3465 product(intx, DefaultThreadPriority, -1, \ | |
4854
de268c8a8075
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phh
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4807
diff
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
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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
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changeset
|
3471 "(-1 means no change)") \ |
0 | 3472 \ |
3473 product(intx, VMThreadPriority, -1, \ | |
4854
de268c8a8075
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phh
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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
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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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|
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") \ |
b4d8a3d4db73
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changeset
|
3491 \ |
b4d8a3d4db73
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changeset
|
3492 product(intx, JavaPriority4_To_OSPriority, -1, \ |
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changeset
|
3493 "Map Java priorities to OS priorities") \ |
b4d8a3d4db73
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changeset
|
3494 \ |
b4d8a3d4db73
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changeset
|
3495 product(intx, JavaPriority5_To_OSPriority, -1, \ |
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changeset
|
3496 "Map Java priorities to OS priorities") \ |
b4d8a3d4db73
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changeset
|
3497 \ |
b4d8a3d4db73
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changeset
|
3498 product(intx, JavaPriority6_To_OSPriority, -1, \ |
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changeset
|
3499 "Map Java priorities to OS priorities") \ |
b4d8a3d4db73
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changeset
|
3500 \ |
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changeset
|
3501 product(intx, JavaPriority7_To_OSPriority, -1, \ |
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changeset
|
3502 "Map Java priorities to OS priorities") \ |
b4d8a3d4db73
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changeset
|
3503 \ |
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changeset
|
3504 product(intx, JavaPriority8_To_OSPriority, -1, \ |
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changeset
|
3505 "Map Java priorities to OS priorities") \ |
b4d8a3d4db73
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changeset
|
3506 \ |
b4d8a3d4db73
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changeset
|
3507 product(intx, JavaPriority9_To_OSPriority, -1, \ |
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changeset
|
3508 "Map Java priorities to OS priorities") \ |
b4d8a3d4db73
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changeset
|
3509 \ |
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changeset
|
3510 product(intx, JavaPriority10_To_OSPriority,-1, \ |
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changeset
|
3511 "Map Java priorities to OS priorities") \ |
0 | 3512 \ |
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
|
3513 experimental(bool, UseCriticalJavaThreadPriority, false, \ |
de268c8a8075
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|
3514 "Java thread priority 10 maps to critical scheduling priority") \ |
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diff
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|
3515 \ |
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diff
changeset
|
3516 experimental(bool, UseCriticalCompilerThreadPriority, false, \ |
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|
3517 "Compiler thread(s) run at critical scheduling priority") \ |
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phh
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diff
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|
3518 \ |
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4807
diff
changeset
|
3519 experimental(bool, UseCriticalCMSThreadPriority, false, \ |
de268c8a8075
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phh
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diff
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|
3520 "ConcurrentMarkSweep thread runs at critical scheduling priority")\ |
de268c8a8075
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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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diff
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|
3562 product(intx, Tier23InlineeNotifyFreqLog, 20, \ |
dc45ae774613
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3960
diff
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|
3563 "Inlinee invocation (tiers 2 and 3) notification frequency") \ |
dc45ae774613
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3960
diff
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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
91eba9f82325
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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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diff
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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
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6197
diff
changeset
|
3698 product(uintx, MaxDirectMemorySize, 0, \ |
0 | 3699 "Maximum total size of NIO direct-buffer allocations") \ |
3700 \ | |
3701 /* temporary developer defined flags */ \ | |
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
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3780
diff
changeset
|
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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changeset
|
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
e9aa2ca89ad6
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2204
diff
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|
3769 product(bool, TransmitErrorReport, false, \ |
2199
d8a72fbc4be7
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2192
diff
changeset
|
3770 "Enable error report transmission on erroneous termination") \ |
d8a72fbc4be7
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2192
diff
changeset
|
3771 \ |
2209
e9aa2ca89ad6
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kamg
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2204
diff
changeset
|
3772 product(ccstr, ErrorReportServer, NULL, \ |
2199
d8a72fbc4be7
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2192
diff
changeset
|
3773 "Override built-in error report server address") \ |
d8a72fbc4be7
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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 \ |
18096 | 3780 product(bool, VerifySharedSpaces, false, \ |
3781 "Verify shared spaces (false for default archive, true for " \ | |
3782 "archive specified by -XX:SharedArchiveFile)") \ | |
3783 \ | |
0 | 3784 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
|
3785 "Require shared spaces for metadata") \ |
0 | 3786 \ |
3787 product(bool, DumpSharedSpaces, false, \ | |
12836
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|
3788 "Special mode: JVM reads a class list, loads classes, builds " \ |
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|
3789 "shared spaces, and dumps the shared spaces to a file to be " \ |
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|
3790 "used in future JVM runs") \ |
0 | 3791 \ |
3792 product(bool, PrintSharedSpaces, false, \ | |
3793 "Print usage of shared spaces") \ | |
3794 \ | |
20375
6e0cb14ce59b
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20360
diff
changeset
|
3795 product(bool, PrintSharedArchiveAndExit, false, \ |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
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20360
diff
changeset
|
3796 "Print shared archive file contents") \ |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
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20360
diff
changeset
|
3797 \ |
6e0cb14ce59b
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20360
diff
changeset
|
3798 product(bool, PrintSharedDictionary, false, \ |
6e0cb14ce59b
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20360
diff
changeset
|
3799 "If PrintSharedArchiveAndExit is true, also print the shared " \ |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20360
diff
changeset
|
3800 "dictionary") \ |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20360
diff
changeset
|
3801 \ |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6633
diff
changeset
|
3802 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
|
3803 "Size of read-write space for metadata (in bytes)") \ |
0 | 3804 \ |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6633
diff
changeset
|
3805 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
|
3806 "Size of read-only space for metadata (in bytes)") \ |
0 | 3807 \ |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6633
diff
changeset
|
3808 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
|
3809 "Size of the shared miscellaneous data area (in bytes)") \ |
0 | 3810 \ |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6633
diff
changeset
|
3811 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
|
3812 "Size of the shared miscellaneous code area (in bytes)") \ |
0 | 3813 \ |
8804
91bf0bdae37b
8008217: CDS: Class data sharing limits the malloc heap on Solaris
coleenp
parents:
8802
diff
changeset
|
3814 product(uintx, SharedBaseAddress, LP64_ONLY(32*G) \ |
91bf0bdae37b
8008217: CDS: Class data sharing limits the malloc heap on Solaris
coleenp
parents:
8802
diff
changeset
|
3815 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
|
3816 "Address to allocate shared memory region for class data") \ |
0 | 3817 \ |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3818 diagnostic(bool, EnableInvokeDynamic, true, \ |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3819 "support JSR 292 (method handles, invokedynamic, " \ |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3820 "anonymous classes") \ |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2403
diff
changeset
|
3821 \ |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20360
diff
changeset
|
3822 diagnostic(bool, IgnoreUnverifiableClassesDuringDump, false, \ |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20360
diff
changeset
|
3823 "Do not quit -Xshare:dump even if we encounter unverifiable " \ |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20360
diff
changeset
|
3824 "classes. Just exclude them from the shared dictionary.") \ |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20360
diff
changeset
|
3825 \ |
3757
f8c9417e3571
7052219: JSR 292: Crash in ~BufferBlob::MethodHandles adapters
never
parents:
3745
diff
changeset
|
3826 diagnostic(bool, PrintMethodHandleStubs, false, \ |
f8c9417e3571
7052219: JSR 292: Crash in ~BufferBlob::MethodHandles adapters
never
parents:
3745
diff
changeset
|
3827 "Print generated stub code for method handles") \ |
f8c9417e3571
7052219: JSR 292: Crash in ~BufferBlob::MethodHandles adapters
never
parents:
3745
diff
changeset
|
3828 \ |
710 | 3829 develop(bool, TraceMethodHandles, false, \ |
3830 "trace internal method handle operations") \ | |
3831 \ | |
3832 diagnostic(bool, VerifyMethodHandles, trueInDebug, \ | |
3833 "perform extra checks when constructing method handles") \ | |
3834 \ | |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6199
diff
changeset
|
3835 diagnostic(bool, ShowHiddenFrames, false, \ |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6199
diff
changeset
|
3836 "show method handle implementation frames (usually hidden)") \ |
3388
a80577f854f9
7045513: JSR 292 inlining causes crashes in methodHandleWalk.cpp
never
parents:
3384
diff
changeset
|
3837 \ |
1173
73b22f919c34
6912065: final fields in objects need to support inlining optimizations for JSR 292
jrose
parents:
1157
diff
changeset
|
3838 experimental(bool, TrustFinalNonStaticFields, false, \ |
73b22f919c34
6912065: final fields in objects need to support inlining optimizations for JSR 292
jrose
parents:
1157
diff
changeset
|
3839 "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
|
3840 \ |
17820 | 3841 diagnostic(bool, FoldStableValues, true, \ |
3842 "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
|
3843 \ |
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3844 develop(bool, TraceInvokeDynamic, false, \ |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3845 "trace internal invoke dynamic operations") \ |
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
3846 \ |
0 | 3847 diagnostic(bool, PauseAtStartup, false, \ |
3848 "Causes the VM to pause at startup time and wait for the pause " \ | |
3849 "file to be removed (default: ./vm.paused.<pid>)") \ | |
3850 \ | |
3851 diagnostic(ccstr, PauseAtStartupFile, NULL, \ | |
3852 "The file to create and for whose removal to await when pausing " \ | |
3853 "at startup. (default: ./vm.paused.<pid>)") \ | |
3854 \ | |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2265
diff
changeset
|
3855 diagnostic(bool, PauseAtExit, false, \ |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2265
diff
changeset
|
3856 "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
|
3857 \ |
0 | 3858 product(bool, ExtendedDTraceProbes, false, \ |
3859 "Enable performance-impacting dtrace probes") \ | |
3860 \ | |
3861 product(bool, DTraceMethodProbes, false, \ | |
3862 "Enable dtrace probes for method-entry and method-exit") \ | |
3863 \ | |
3864 product(bool, DTraceAllocProbes, false, \ | |
3865 "Enable dtrace probes for object allocation") \ | |
3866 \ | |
3867 product(bool, DTraceMonitorProbes, false, \ | |
3868 "Enable dtrace probes for monitor events") \ | |
3869 \ | |
3870 product(bool, RelaxAccessControlCheck, false, \ | |
3871 "Relax the access control checks in the verifier") \ | |
3872 \ | |
116
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
113
diff
changeset
|
3873 diagnostic(bool, PrintDTraceDOF, false, \ |
12836
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3874 "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
|
3875 \ |
6982
e4f764ddb06a
7122219: Passed StringTableSize value not verified
hseigel
parents:
6935
diff
changeset
|
3876 product(uintx, StringTableSize, defaultStringTableSize, \ |
2378 | 3877 "Number of buckets in the interned String table") \ |
3878 \ | |
12825
c90e76575b03
8019375: Internal symbol table size should be tunable.
kevinw
parents:
12326
diff
changeset
|
3879 experimental(uintx, SymbolTableSize, defaultSymbolTableSize, \ |
c90e76575b03
8019375: Internal symbol table size should be tunable.
kevinw
parents:
12326
diff
changeset
|
3880 "Number of buckets in the JVM internal Symbol table") \ |
c90e76575b03
8019375: Internal symbol table size should be tunable.
kevinw
parents:
12326
diff
changeset
|
3881 \ |
17764 | 3882 product(bool, UseStringDeduplication, false, \ |
3883 "Use string deduplication") \ | |
3884 \ | |
3885 product(bool, PrintStringDeduplicationStatistics, false, \ | |
3886 "Print string deduplication statistics") \ | |
3887 \ | |
3888 product(uintx, StringDeduplicationAgeThreshold, 3, \ | |
3889 "A string must reach this age (or be promoted to an old region) " \ | |
3890 "to be considered for deduplication") \ | |
3891 \ | |
3892 diagnostic(bool, StringDeduplicationResizeALot, false, \ | |
3893 "Force table resize every time the table is scanned") \ | |
3894 \ | |
3895 diagnostic(bool, StringDeduplicationRehashALot, false, \ | |
3896 "Force table rehash every time the table is scanned") \ | |
3897 \ | |
6934 | 3898 develop(bool, TraceDefaultMethods, false, \ |
3899 "Trace the default method processing steps") \ | |
3900 \ | |
3901 develop(bool, VerifyGenericSignatures, false, \ | |
3902 "Abort VM on erroneous or inconsistent generic signatures") \ | |
3903 \ | |
449
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
xlu
parents:
443
diff
changeset
|
3904 product(bool, UseVMInterruptibleIO, false, \ |
0 | 3905 "(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
|
3906 "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
|
3907 "value of this flag is true for JDK 6 and earlier") \ |
5915 | 3908 \ |
3909 diagnostic(bool, WhiteBoxAPI, false, \ | |
6064
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
5979
diff
changeset
|
3910 "Enable internal testing APIs") \ |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
5979
diff
changeset
|
3911 \ |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
5979
diff
changeset
|
3912 product(bool, PrintGCCause, true, \ |
8702 | 3913 "Include GC cause in GC logging") \ |
3914 \ | |
20317
ee019285a52c
8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
20313
diff
changeset
|
3915 experimental(intx, SurvivorAlignmentInBytes, 0, \ |
ee019285a52c
8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
20313
diff
changeset
|
3916 "Default survivor space alignment in bytes") \ |
ee019285a52c
8031323: Optionally align objects copied to survivor spaces
jmasa
parents:
20313
diff
changeset
|
3917 \ |
9073
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
9071
diff
changeset
|
3918 product(bool , AllowNonVirtualCalls, false, \ |
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
9071
diff
changeset
|
3919 "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
|
3920 \ |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20360
diff
changeset
|
3921 product(ccstr, DumpLoadedClassList, NULL, \ |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20360
diff
changeset
|
3922 "Dump the names all loaded classes, that could be stored into " \ |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20360
diff
changeset
|
3923 "the CDS archive, in the specified file") \ |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20360
diff
changeset
|
3924 \ |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20360
diff
changeset
|
3925 product(ccstr, SharedClassListFile, NULL, \ |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20360
diff
changeset
|
3926 "Override the default CDS class list") \ |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20360
diff
changeset
|
3927 \ |
10270
f944ba972151
8014138: Add VM option to facilitate the writing of CDS tests
hseigel
parents:
10269
diff
changeset
|
3928 diagnostic(ccstr, SharedArchiveFile, NULL, \ |
f944ba972151
8014138: Add VM option to facilitate the writing of CDS tests
hseigel
parents:
10269
diff
changeset
|
3929 "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
|
3930 \ |
20375
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20360
diff
changeset
|
3931 product(ccstr, ExtraSharedClassListFile, NULL, \ |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20360
diff
changeset
|
3932 "Extra classlist for building the CDS archive file") \ |
6e0cb14ce59b
8046070: Class Data Sharing clean up and refactoring
iklam
parents:
20360
diff
changeset
|
3933 \ |
9073
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
9071
diff
changeset
|
3934 experimental(uintx, ArrayAllocatorMallocLimit, \ |
83f27710f5f7
7197666: java -d64 -version core dumps in a box with lots of memory
brutisso
parents:
9071
diff
changeset
|
3935 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
|
3936 "Allocation less than this value will be allocated " \ |
10405 | 3937 "using malloc. Larger allocations will use mmap.") \ |
3938 \ | |
3939 product(bool, EnableTracing, false, \ | |
3940 "Enable event-based tracing") \ | |
12836
b4d8a3d4db73
8010506: Typos and errors in descriptions of vm options in globals.hpp
tamao
parents:
12287
diff
changeset
|
3941 \ |
10405 | 3942 product(bool, UseLockedTracing, false, \ |
3943 "Use locked-tracing when doing event-based tracing") | |
3944 | |
0 | 3945 /* |
3946 * Macros for factoring of globals | |
3947 */ | |
3948 | |
3949 // Interface macros | |
12322
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12269
diff
changeset
|
3950 #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
|
3951 #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
|
3952 #define DECLARE_DIAGNOSTIC_FLAG(type, name, value, doc) extern "C" type name; |
350
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
3953 #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
|
3954 #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
|
3955 #define DECLARE_PRODUCT_RW_FLAG(type, name, value, doc) extern "C" type name; |
0 | 3956 #ifdef PRODUCT |
12322
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12269
diff
changeset
|
3957 #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
|
3958 #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
|
3959 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type CONST_##name; |
0 | 3960 #else |
12322
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12269
diff
changeset
|
3961 #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
|
3962 #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
|
3963 #define DECLARE_NOTPRODUCT_FLAG(type, name, value, doc) extern "C" type name; |
0 | 3964 #endif |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3965 // 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
|
3966 #ifdef _LP64 |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3967 #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
|
3968 #else |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
109
diff
changeset
|
3969 #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
|
3970 #endif // _LP64 |
0 | 3971 |
3972 // Implementation macros | |
12322
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12269
diff
changeset
|
3973 #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
|
3974 #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
|
3975 #define MATERIALIZE_DIAGNOSTIC_FLAG(type, name, value, doc) type name = value; |
350
d28aa69f0959
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
ysr
parents:
348
diff
changeset
|
3976 #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
|
3977 #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
|
3978 #define MATERIALIZE_PRODUCT_RW_FLAG(type, name, value, doc) type name = value; |
0 | 3979 #ifdef PRODUCT |
12322
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12269
diff
changeset
|
3980 #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
|
3981 #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
|
3982 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type CONST_##name = value; |
0 | 3983 #else |
12322
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3984 #define MATERIALIZE_DEVELOPER_FLAG(type, name, value, doc) type name = value; |
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3985 #define MATERIALIZE_PD_DEVELOPER_FLAG(type, name, doc) type name = pd_##name; |
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3986 #define MATERIALIZE_NOTPRODUCT_FLAG(type, name, value, doc) type name = value; |
0 | 3987 #endif |
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3988 #ifdef _LP64 |
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3989 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) type name = value; |
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3990 #else |
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3991 #define MATERIALIZE_LP64_PRODUCT_FLAG(type, name, value, doc) /* flag is constant */ |
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3992 #endif // _LP64 |
0 | 3993 |
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3994 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 | 3995 |
3996 RUNTIME_OS_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PD_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_PD_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_NOTPRODUCT_FLAG) | |
1972 | 3997 |
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3998 ARCH_FLAGS(DECLARE_DEVELOPER_FLAG, DECLARE_PRODUCT_FLAG, DECLARE_DIAGNOSTIC_FLAG, DECLARE_EXPERIMENTAL_FLAG, DECLARE_NOTPRODUCT_FLAG) |
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3999 |
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4000 // Extensions |
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4001 |
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4002 #include "runtime/globals_ext.hpp" |
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4003 |
1972 | 4004 #endif // SHARE_VM_RUNTIME_GLOBALS_HPP |