Mercurial > hg > truffle
annotate src/share/vm/runtime/arguments.cpp @ 7410:18712b1caf7a
8004898: library_call.cpp build error after 7172640 with GCC 4.7.2
Summary: fix opto/library_call.cpp compilation errors
Reviewed-by: twisti, coleenp
author | rkennke |
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date | Wed, 12 Dec 2012 21:40:04 -0500 |
parents | 53715fb1597d |
children | 291ffc492eb6 442f942757c0 7d42f3b08300 |
rev | line source |
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0 | 1 /* |
4838 | 2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/javaAssertions.hpp" | |
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27 #include "classfile/symbolTable.hpp" |
1972 | 28 #include "compiler/compilerOracle.hpp" |
29 #include "memory/allocation.inline.hpp" | |
30 #include "memory/cardTableRS.hpp" | |
31 #include "memory/referenceProcessor.hpp" | |
32 #include "memory/universe.inline.hpp" | |
33 #include "oops/oop.inline.hpp" | |
34 #include "prims/jvmtiExport.hpp" | |
35 #include "runtime/arguments.hpp" | |
36 #include "runtime/globals_extension.hpp" | |
37 #include "runtime/java.hpp" | |
38 #include "services/management.hpp" | |
6197 | 39 #include "services/memTracker.hpp" |
1972 | 40 #include "utilities/defaultStream.hpp" |
41 #include "utilities/taskqueue.hpp" | |
42 #ifdef TARGET_OS_FAMILY_linux | |
43 # include "os_linux.inline.hpp" | |
44 #endif | |
45 #ifdef TARGET_OS_FAMILY_solaris | |
46 # include "os_solaris.inline.hpp" | |
47 #endif | |
48 #ifdef TARGET_OS_FAMILY_windows | |
49 # include "os_windows.inline.hpp" | |
50 #endif | |
3960 | 51 #ifdef TARGET_OS_FAMILY_bsd |
52 # include "os_bsd.inline.hpp" | |
53 #endif | |
1972 | 54 #ifndef SERIALGC |
55 #include "gc_implementation/concurrentMarkSweep/compactibleFreeListSpace.hpp" | |
56 #endif | |
0 | 57 |
2474 | 58 // Note: This is a special bug reporting site for the JVM |
59 #define DEFAULT_VENDOR_URL_BUG "http://bugreport.sun.com/bugreport/crash.jsp" | |
0 | 60 #define DEFAULT_JAVA_LAUNCHER "generic" |
61 | |
62 char** Arguments::_jvm_flags_array = NULL; | |
63 int Arguments::_num_jvm_flags = 0; | |
64 char** Arguments::_jvm_args_array = NULL; | |
65 int Arguments::_num_jvm_args = 0; | |
66 char* Arguments::_java_command = NULL; | |
67 SystemProperty* Arguments::_system_properties = NULL; | |
68 const char* Arguments::_gc_log_filename = NULL; | |
69 bool Arguments::_has_profile = false; | |
70 bool Arguments::_has_alloc_profile = false; | |
71 uintx Arguments::_min_heap_size = 0; | |
72 Arguments::Mode Arguments::_mode = _mixed; | |
73 bool Arguments::_java_compiler = false; | |
74 bool Arguments::_xdebug_mode = false; | |
75 const char* Arguments::_java_vendor_url_bug = DEFAULT_VENDOR_URL_BUG; | |
76 const char* Arguments::_sun_java_launcher = DEFAULT_JAVA_LAUNCHER; | |
77 int Arguments::_sun_java_launcher_pid = -1; | |
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78 bool Arguments::_created_by_gamma_launcher = false; |
0 | 79 |
80 // These parameters are reset in method parse_vm_init_args(JavaVMInitArgs*) | |
81 bool Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
82 bool Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
83 bool Arguments::_BackgroundCompilation = BackgroundCompilation; | |
84 bool Arguments::_ClipInlining = ClipInlining; | |
85 | |
86 char* Arguments::SharedArchivePath = NULL; | |
87 | |
88 AgentLibraryList Arguments::_libraryList; | |
89 AgentLibraryList Arguments::_agentList; | |
90 | |
91 abort_hook_t Arguments::_abort_hook = NULL; | |
92 exit_hook_t Arguments::_exit_hook = NULL; | |
93 vfprintf_hook_t Arguments::_vfprintf_hook = NULL; | |
94 | |
95 | |
96 SystemProperty *Arguments::_java_ext_dirs = NULL; | |
97 SystemProperty *Arguments::_java_endorsed_dirs = NULL; | |
98 SystemProperty *Arguments::_sun_boot_library_path = NULL; | |
99 SystemProperty *Arguments::_java_library_path = NULL; | |
100 SystemProperty *Arguments::_java_home = NULL; | |
101 SystemProperty *Arguments::_java_class_path = NULL; | |
102 SystemProperty *Arguments::_sun_boot_class_path = NULL; | |
103 | |
104 char* Arguments::_meta_index_path = NULL; | |
105 char* Arguments::_meta_index_dir = NULL; | |
106 | |
107 // Check if head of 'option' matches 'name', and sets 'tail' remaining part of option string | |
108 | |
109 static bool match_option(const JavaVMOption *option, const char* name, | |
110 const char** tail) { | |
111 int len = (int)strlen(name); | |
112 if (strncmp(option->optionString, name, len) == 0) { | |
113 *tail = option->optionString + len; | |
114 return true; | |
115 } else { | |
116 return false; | |
117 } | |
118 } | |
119 | |
120 static void logOption(const char* opt) { | |
121 if (PrintVMOptions) { | |
122 jio_fprintf(defaultStream::output_stream(), "VM option '%s'\n", opt); | |
123 } | |
124 } | |
125 | |
126 // Process java launcher properties. | |
127 void Arguments::process_sun_java_launcher_properties(JavaVMInitArgs* args) { | |
128 // See if sun.java.launcher or sun.java.launcher.pid is defined. | |
129 // Must do this before setting up other system properties, | |
130 // as some of them may depend on launcher type. | |
131 for (int index = 0; index < args->nOptions; index++) { | |
132 const JavaVMOption* option = args->options + index; | |
133 const char* tail; | |
134 | |
135 if (match_option(option, "-Dsun.java.launcher=", &tail)) { | |
136 process_java_launcher_argument(tail, option->extraInfo); | |
137 continue; | |
138 } | |
139 if (match_option(option, "-Dsun.java.launcher.pid=", &tail)) { | |
140 _sun_java_launcher_pid = atoi(tail); | |
141 continue; | |
142 } | |
143 } | |
144 } | |
145 | |
146 // Initialize system properties key and value. | |
147 void Arguments::init_system_properties() { | |
148 | |
149 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.name", | |
150 "Java Virtual Machine Specification", false)); | |
151 PropertyList_add(&_system_properties, new SystemProperty("java.vm.version", VM_Version::vm_release(), false)); | |
152 PropertyList_add(&_system_properties, new SystemProperty("java.vm.name", VM_Version::vm_name(), false)); | |
153 PropertyList_add(&_system_properties, new SystemProperty("java.vm.info", VM_Version::vm_info_string(), true)); | |
154 | |
155 // following are JVMTI agent writeable properties. | |
156 // Properties values are set to NULL and they are | |
157 // os specific they are initialized in os::init_system_properties_values(). | |
158 _java_ext_dirs = new SystemProperty("java.ext.dirs", NULL, true); | |
159 _java_endorsed_dirs = new SystemProperty("java.endorsed.dirs", NULL, true); | |
160 _sun_boot_library_path = new SystemProperty("sun.boot.library.path", NULL, true); | |
161 _java_library_path = new SystemProperty("java.library.path", NULL, true); | |
162 _java_home = new SystemProperty("java.home", NULL, true); | |
163 _sun_boot_class_path = new SystemProperty("sun.boot.class.path", NULL, true); | |
164 | |
165 _java_class_path = new SystemProperty("java.class.path", "", true); | |
166 | |
167 // Add to System Property list. | |
168 PropertyList_add(&_system_properties, _java_ext_dirs); | |
169 PropertyList_add(&_system_properties, _java_endorsed_dirs); | |
170 PropertyList_add(&_system_properties, _sun_boot_library_path); | |
171 PropertyList_add(&_system_properties, _java_library_path); | |
172 PropertyList_add(&_system_properties, _java_home); | |
173 PropertyList_add(&_system_properties, _java_class_path); | |
174 PropertyList_add(&_system_properties, _sun_boot_class_path); | |
175 | |
176 // Set OS specific system properties values | |
177 os::init_system_properties_values(); | |
178 } | |
179 | |
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180 |
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181 // Update/Initialize System properties after JDK version number is known |
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182 void Arguments::init_version_specific_system_properties() { |
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183 enum { bufsz = 16 }; |
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184 char buffer[bufsz]; |
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185 const char* spec_vendor = "Sun Microsystems Inc."; |
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186 uint32_t spec_version = 0; |
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187 |
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188 if (JDK_Version::is_gte_jdk17x_version()) { |
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189 spec_vendor = "Oracle Corporation"; |
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190 spec_version = JDK_Version::current().major_version(); |
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191 } |
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192 jio_snprintf(buffer, bufsz, "1." UINT32_FORMAT, spec_version); |
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193 |
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194 PropertyList_add(&_system_properties, |
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195 new SystemProperty("java.vm.specification.vendor", spec_vendor, false)); |
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196 PropertyList_add(&_system_properties, |
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197 new SystemProperty("java.vm.specification.version", buffer, false)); |
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198 PropertyList_add(&_system_properties, |
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199 new SystemProperty("java.vm.vendor", VM_Version::vm_vendor(), false)); |
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200 } |
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201 |
242 | 202 /** |
203 * Provide a slightly more user-friendly way of eliminating -XX flags. | |
204 * When a flag is eliminated, it can be added to this list in order to | |
205 * continue accepting this flag on the command-line, while issuing a warning | |
206 * and ignoring the value. Once the JDK version reaches the 'accept_until' | |
207 * limit, we flatly refuse to admit the existence of the flag. This allows | |
208 * a flag to die correctly over JDK releases using HSX. | |
209 */ | |
210 typedef struct { | |
211 const char* name; | |
212 JDK_Version obsoleted_in; // when the flag went away | |
213 JDK_Version accept_until; // which version to start denying the existence | |
214 } ObsoleteFlag; | |
0 | 215 |
242 | 216 static ObsoleteFlag obsolete_jvm_flags[] = { |
217 { "UseTrainGC", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
218 { "UseSpecialLargeObjectHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
219 { "UseOversizedCarHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
220 { "TraceCarAllocation", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
221 { "PrintTrainGCProcessingStats", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
222 { "LogOfCarSpaceSize", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
223 { "OversizedCarThreshold", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
224 { "MinTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
225 { "DefaultTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
226 { "MaxTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
227 { "DelayTickAdjustment", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
228 { "ProcessingToTenuringRatio", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
229 { "MinTrainLength", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
230 { "AppendRatio", JDK_Version::jdk_update(6,10), JDK_Version::jdk(7) }, | |
1064 | 231 { "DefaultMaxRAM", JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, |
232 { "DefaultInitialRAMFraction", | |
233 JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, | |
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234 { "UseDepthFirstScavengeOrder", |
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235 JDK_Version::jdk_update(6,22), JDK_Version::jdk(7) }, |
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236 { "HandlePromotionFailure", |
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237 JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
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238 { "MaxLiveObjectEvacuationRatio", |
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239 JDK_Version::jdk_update(6,24), JDK_Version::jdk(8) }, |
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240 { "ForceSharedSpaces", JDK_Version::jdk_update(6,25), JDK_Version::jdk(8) }, |
3251
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241 { "UseParallelOldGCCompacting", |
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242 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
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243 { "UseParallelDensePrefixUpdate", |
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244 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
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245 { "UseParallelOldGCDensePrefix", |
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246 JDK_Version::jdk_update(6,27), JDK_Version::jdk(8) }, |
2460 | 247 { "AllowTransitionalJSR292", JDK_Version::jdk(7), JDK_Version::jdk(8) }, |
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248 { "UseCompressedStrings", JDK_Version::jdk(7), JDK_Version::jdk(8) }, |
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249 { "CMSPermGenPrecleaningEnabled", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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250 { "CMSTriggerPermRatio", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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251 { "CMSInitiatingPermOccupancyFraction", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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252 { "AdaptivePermSizeWeight", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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253 { "PermGenPadding", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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254 { "PermMarkSweepDeadRatio", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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255 { "PermSize", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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256 { "MaxPermSize", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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257 { "MinPermHeapExpansion", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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258 { "MaxPermHeapExpansion", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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259 { "CMSRevisitStackSize", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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260 { "PrintRevisitStats", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
6916 | 261 { "UseVectoredExceptions", JDK_Version::jdk(8), JDK_Version::jdk(9) }, |
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262 #ifdef PRODUCT |
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263 { "DesiredMethodLimit", |
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264 JDK_Version::jdk_update(7, 2), JDK_Version::jdk(8) }, |
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265 #endif // PRODUCT |
242 | 266 { NULL, JDK_Version(0), JDK_Version(0) } |
267 }; | |
268 | |
269 // Returns true if the flag is obsolete and fits into the range specified | |
270 // for being ignored. In the case that the flag is ignored, the 'version' | |
271 // value is filled in with the version number when the flag became | |
272 // obsolete so that that value can be displayed to the user. | |
273 bool Arguments::is_newly_obsolete(const char *s, JDK_Version* version) { | |
0 | 274 int i = 0; |
242 | 275 assert(version != NULL, "Must provide a version buffer"); |
276 while (obsolete_jvm_flags[i].name != NULL) { | |
277 const ObsoleteFlag& flag_status = obsolete_jvm_flags[i]; | |
0 | 278 // <flag>=xxx form |
279 // [-|+]<flag> form | |
242 | 280 if ((strncmp(flag_status.name, s, strlen(flag_status.name)) == 0) || |
0 | 281 ((s[0] == '+' || s[0] == '-') && |
242 | 282 (strncmp(flag_status.name, &s[1], strlen(flag_status.name)) == 0))) { |
283 if (JDK_Version::current().compare(flag_status.accept_until) == -1) { | |
284 *version = flag_status.obsoleted_in; | |
285 return true; | |
286 } | |
0 | 287 } |
288 i++; | |
289 } | |
290 return false; | |
291 } | |
292 | |
293 // Constructs the system class path (aka boot class path) from the following | |
294 // components, in order: | |
295 // | |
296 // prefix // from -Xbootclasspath/p:... | |
297 // endorsed // the expansion of -Djava.endorsed.dirs=... | |
298 // base // from os::get_system_properties() or -Xbootclasspath= | |
299 // suffix // from -Xbootclasspath/a:... | |
300 // | |
301 // java.endorsed.dirs is a list of directories; any jar or zip files in the | |
302 // directories are added to the sysclasspath just before the base. | |
303 // | |
304 // This could be AllStatic, but it isn't needed after argument processing is | |
305 // complete. | |
306 class SysClassPath: public StackObj { | |
307 public: | |
308 SysClassPath(const char* base); | |
309 ~SysClassPath(); | |
310 | |
311 inline void set_base(const char* base); | |
312 inline void add_prefix(const char* prefix); | |
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313 inline void add_suffix_to_prefix(const char* suffix); |
0 | 314 inline void add_suffix(const char* suffix); |
315 inline void reset_path(const char* base); | |
316 | |
317 // Expand the jar/zip files in each directory listed by the java.endorsed.dirs | |
318 // property. Must be called after all command-line arguments have been | |
319 // processed (in particular, -Djava.endorsed.dirs=...) and before calling | |
320 // combined_path(). | |
321 void expand_endorsed(); | |
322 | |
323 inline const char* get_base() const { return _items[_scp_base]; } | |
324 inline const char* get_prefix() const { return _items[_scp_prefix]; } | |
325 inline const char* get_suffix() const { return _items[_scp_suffix]; } | |
326 inline const char* get_endorsed() const { return _items[_scp_endorsed]; } | |
327 | |
328 // Combine all the components into a single c-heap-allocated string; caller | |
329 // must free the string if/when no longer needed. | |
330 char* combined_path(); | |
331 | |
332 private: | |
333 // Utility routines. | |
334 static char* add_to_path(const char* path, const char* str, bool prepend); | |
335 static char* add_jars_to_path(char* path, const char* directory); | |
336 | |
337 inline void reset_item_at(int index); | |
338 | |
339 // Array indices for the items that make up the sysclasspath. All except the | |
340 // base are allocated in the C heap and freed by this class. | |
341 enum { | |
342 _scp_prefix, // from -Xbootclasspath/p:... | |
343 _scp_endorsed, // the expansion of -Djava.endorsed.dirs=... | |
344 _scp_base, // the default sysclasspath | |
345 _scp_suffix, // from -Xbootclasspath/a:... | |
346 _scp_nitems // the number of items, must be last. | |
347 }; | |
348 | |
349 const char* _items[_scp_nitems]; | |
350 DEBUG_ONLY(bool _expansion_done;) | |
351 }; | |
352 | |
353 SysClassPath::SysClassPath(const char* base) { | |
354 memset(_items, 0, sizeof(_items)); | |
355 _items[_scp_base] = base; | |
356 DEBUG_ONLY(_expansion_done = false;) | |
357 } | |
358 | |
359 SysClassPath::~SysClassPath() { | |
360 // Free everything except the base. | |
361 for (int i = 0; i < _scp_nitems; ++i) { | |
362 if (i != _scp_base) reset_item_at(i); | |
363 } | |
364 DEBUG_ONLY(_expansion_done = false;) | |
365 } | |
366 | |
367 inline void SysClassPath::set_base(const char* base) { | |
368 _items[_scp_base] = base; | |
369 } | |
370 | |
371 inline void SysClassPath::add_prefix(const char* prefix) { | |
372 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], prefix, true); | |
373 } | |
374 | |
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375 inline void SysClassPath::add_suffix_to_prefix(const char* suffix) { |
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376 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], suffix, false); |
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377 } |
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378 |
0 | 379 inline void SysClassPath::add_suffix(const char* suffix) { |
380 _items[_scp_suffix] = add_to_path(_items[_scp_suffix], suffix, false); | |
381 } | |
382 | |
383 inline void SysClassPath::reset_item_at(int index) { | |
384 assert(index < _scp_nitems && index != _scp_base, "just checking"); | |
385 if (_items[index] != NULL) { | |
6197 | 386 FREE_C_HEAP_ARRAY(char, _items[index], mtInternal); |
0 | 387 _items[index] = NULL; |
388 } | |
389 } | |
390 | |
391 inline void SysClassPath::reset_path(const char* base) { | |
392 // Clear the prefix and suffix. | |
393 reset_item_at(_scp_prefix); | |
394 reset_item_at(_scp_suffix); | |
395 set_base(base); | |
396 } | |
397 | |
398 //------------------------------------------------------------------------------ | |
399 | |
400 void SysClassPath::expand_endorsed() { | |
401 assert(_items[_scp_endorsed] == NULL, "can only be called once."); | |
402 | |
403 const char* path = Arguments::get_property("java.endorsed.dirs"); | |
404 if (path == NULL) { | |
405 path = Arguments::get_endorsed_dir(); | |
406 assert(path != NULL, "no default for java.endorsed.dirs"); | |
407 } | |
408 | |
409 char* expanded_path = NULL; | |
410 const char separator = *os::path_separator(); | |
411 const char* const end = path + strlen(path); | |
412 while (path < end) { | |
413 const char* tmp_end = strchr(path, separator); | |
414 if (tmp_end == NULL) { | |
415 expanded_path = add_jars_to_path(expanded_path, path); | |
416 path = end; | |
417 } else { | |
6197 | 418 char* dirpath = NEW_C_HEAP_ARRAY(char, tmp_end - path + 1, mtInternal); |
0 | 419 memcpy(dirpath, path, tmp_end - path); |
420 dirpath[tmp_end - path] = '\0'; | |
421 expanded_path = add_jars_to_path(expanded_path, dirpath); | |
6197 | 422 FREE_C_HEAP_ARRAY(char, dirpath, mtInternal); |
0 | 423 path = tmp_end + 1; |
424 } | |
425 } | |
426 _items[_scp_endorsed] = expanded_path; | |
427 DEBUG_ONLY(_expansion_done = true;) | |
428 } | |
429 | |
430 // Combine the bootclasspath elements, some of which may be null, into a single | |
431 // c-heap-allocated string. | |
432 char* SysClassPath::combined_path() { | |
433 assert(_items[_scp_base] != NULL, "empty default sysclasspath"); | |
434 assert(_expansion_done, "must call expand_endorsed() first."); | |
435 | |
436 size_t lengths[_scp_nitems]; | |
437 size_t total_len = 0; | |
438 | |
439 const char separator = *os::path_separator(); | |
440 | |
441 // Get the lengths. | |
442 int i; | |
443 for (i = 0; i < _scp_nitems; ++i) { | |
444 if (_items[i] != NULL) { | |
445 lengths[i] = strlen(_items[i]); | |
446 // Include space for the separator char (or a NULL for the last item). | |
447 total_len += lengths[i] + 1; | |
448 } | |
449 } | |
450 assert(total_len > 0, "empty sysclasspath not allowed"); | |
451 | |
452 // Copy the _items to a single string. | |
6197 | 453 char* cp = NEW_C_HEAP_ARRAY(char, total_len, mtInternal); |
0 | 454 char* cp_tmp = cp; |
455 for (i = 0; i < _scp_nitems; ++i) { | |
456 if (_items[i] != NULL) { | |
457 memcpy(cp_tmp, _items[i], lengths[i]); | |
458 cp_tmp += lengths[i]; | |
459 *cp_tmp++ = separator; | |
460 } | |
461 } | |
462 *--cp_tmp = '\0'; // Replace the extra separator. | |
463 return cp; | |
464 } | |
465 | |
466 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
467 char* | |
468 SysClassPath::add_to_path(const char* path, const char* str, bool prepend) { | |
469 char *cp; | |
470 | |
471 assert(str != NULL, "just checking"); | |
472 if (path == NULL) { | |
473 size_t len = strlen(str) + 1; | |
6197 | 474 cp = NEW_C_HEAP_ARRAY(char, len, mtInternal); |
0 | 475 memcpy(cp, str, len); // copy the trailing null |
476 } else { | |
477 const char separator = *os::path_separator(); | |
478 size_t old_len = strlen(path); | |
479 size_t str_len = strlen(str); | |
480 size_t len = old_len + str_len + 2; | |
481 | |
482 if (prepend) { | |
6197 | 483 cp = NEW_C_HEAP_ARRAY(char, len, mtInternal); |
0 | 484 char* cp_tmp = cp; |
485 memcpy(cp_tmp, str, str_len); | |
486 cp_tmp += str_len; | |
487 *cp_tmp = separator; | |
488 memcpy(++cp_tmp, path, old_len + 1); // copy the trailing null | |
6197 | 489 FREE_C_HEAP_ARRAY(char, path, mtInternal); |
0 | 490 } else { |
6197 | 491 cp = REALLOC_C_HEAP_ARRAY(char, path, len, mtInternal); |
0 | 492 char* cp_tmp = cp + old_len; |
493 *cp_tmp = separator; | |
494 memcpy(++cp_tmp, str, str_len + 1); // copy the trailing null | |
495 } | |
496 } | |
497 return cp; | |
498 } | |
499 | |
500 // Scan the directory and append any jar or zip files found to path. | |
501 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
502 char* SysClassPath::add_jars_to_path(char* path, const char* directory) { | |
503 DIR* dir = os::opendir(directory); | |
504 if (dir == NULL) return path; | |
505 | |
506 char dir_sep[2] = { '\0', '\0' }; | |
507 size_t directory_len = strlen(directory); | |
508 const char fileSep = *os::file_separator(); | |
509 if (directory[directory_len - 1] != fileSep) dir_sep[0] = fileSep; | |
510 | |
511 /* Scan the directory for jars/zips, appending them to path. */ | |
512 struct dirent *entry; | |
6197 | 513 char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(directory), mtInternal); |
0 | 514 while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL) { |
515 const char* name = entry->d_name; | |
516 const char* ext = name + strlen(name) - 4; | |
517 bool isJarOrZip = ext > name && | |
518 (os::file_name_strcmp(ext, ".jar") == 0 || | |
519 os::file_name_strcmp(ext, ".zip") == 0); | |
520 if (isJarOrZip) { | |
6197 | 521 char* jarpath = NEW_C_HEAP_ARRAY(char, directory_len + 2 + strlen(name), mtInternal); |
0 | 522 sprintf(jarpath, "%s%s%s", directory, dir_sep, name); |
523 path = add_to_path(path, jarpath, false); | |
6197 | 524 FREE_C_HEAP_ARRAY(char, jarpath, mtInternal); |
0 | 525 } |
526 } | |
6197 | 527 FREE_C_HEAP_ARRAY(char, dbuf, mtInternal); |
0 | 528 os::closedir(dir); |
529 return path; | |
530 } | |
531 | |
532 // Parses a memory size specification string. | |
489
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533 static bool atomull(const char *s, julong* result) { |
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534 julong n = 0; |
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535 int args_read = sscanf(s, os::julong_format_specifier(), &n); |
0 | 536 if (args_read != 1) { |
537 return false; | |
538 } | |
539 while (*s != '\0' && isdigit(*s)) { | |
540 s++; | |
541 } | |
542 // 4705540: illegal if more characters are found after the first non-digit | |
543 if (strlen(s) > 1) { | |
544 return false; | |
545 } | |
546 switch (*s) { | |
547 case 'T': case 't': | |
548 *result = n * G * K; | |
489
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549 // Check for overflow. |
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550 if (*result/((julong)G * K) != n) return false; |
0 | 551 return true; |
552 case 'G': case 'g': | |
553 *result = n * G; | |
489
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554 if (*result/G != n) return false; |
0 | 555 return true; |
556 case 'M': case 'm': | |
557 *result = n * M; | |
489
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558 if (*result/M != n) return false; |
0 | 559 return true; |
560 case 'K': case 'k': | |
561 *result = n * K; | |
489
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562 if (*result/K != n) return false; |
0 | 563 return true; |
564 case '\0': | |
565 *result = n; | |
566 return true; | |
567 default: | |
568 return false; | |
569 } | |
570 } | |
571 | |
489
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572 Arguments::ArgsRange Arguments::check_memory_size(julong size, julong min_size) { |
0 | 573 if (size < min_size) return arg_too_small; |
574 // Check that size will fit in a size_t (only relevant on 32-bit) | |
489
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575 if (size > max_uintx) return arg_too_big; |
0 | 576 return arg_in_range; |
577 } | |
578 | |
579 // Describe an argument out of range error | |
580 void Arguments::describe_range_error(ArgsRange errcode) { | |
581 switch(errcode) { | |
582 case arg_too_big: | |
583 jio_fprintf(defaultStream::error_stream(), | |
584 "The specified size exceeds the maximum " | |
585 "representable size.\n"); | |
586 break; | |
587 case arg_too_small: | |
588 case arg_unreadable: | |
589 case arg_in_range: | |
590 // do nothing for now | |
591 break; | |
592 default: | |
593 ShouldNotReachHere(); | |
594 } | |
595 } | |
596 | |
597 static bool set_bool_flag(char* name, bool value, FlagValueOrigin origin) { | |
598 return CommandLineFlags::boolAtPut(name, &value, origin); | |
599 } | |
600 | |
601 static bool set_fp_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
602 double v; | |
603 if (sscanf(value, "%lf", &v) != 1) { | |
604 return false; | |
605 } | |
606 | |
607 if (CommandLineFlags::doubleAtPut(name, &v, origin)) { | |
608 return true; | |
609 } | |
610 return false; | |
611 } | |
612 | |
613 static bool set_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
489
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614 julong v; |
0 | 615 intx intx_v; |
616 bool is_neg = false; | |
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617 // Check the sign first since atomull() parses only unsigned values. |
0 | 618 if (*value == '-') { |
619 if (!CommandLineFlags::intxAt(name, &intx_v)) { | |
620 return false; | |
621 } | |
622 value++; | |
623 is_neg = true; | |
624 } | |
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625 if (!atomull(value, &v)) { |
0 | 626 return false; |
627 } | |
628 intx_v = (intx) v; | |
629 if (is_neg) { | |
630 intx_v = -intx_v; | |
631 } | |
632 if (CommandLineFlags::intxAtPut(name, &intx_v, origin)) { | |
633 return true; | |
634 } | |
635 uintx uintx_v = (uintx) v; | |
636 if (!is_neg && CommandLineFlags::uintxAtPut(name, &uintx_v, origin)) { | |
637 return true; | |
638 } | |
1064 | 639 uint64_t uint64_t_v = (uint64_t) v; |
640 if (!is_neg && CommandLineFlags::uint64_tAtPut(name, &uint64_t_v, origin)) { | |
641 return true; | |
642 } | |
0 | 643 return false; |
644 } | |
645 | |
646 static bool set_string_flag(char* name, const char* value, FlagValueOrigin origin) { | |
647 if (!CommandLineFlags::ccstrAtPut(name, &value, origin)) return false; | |
648 // Contract: CommandLineFlags always returns a pointer that needs freeing. | |
6197 | 649 FREE_C_HEAP_ARRAY(char, value, mtInternal); |
0 | 650 return true; |
651 } | |
652 | |
653 static bool append_to_string_flag(char* name, const char* new_value, FlagValueOrigin origin) { | |
654 const char* old_value = ""; | |
655 if (!CommandLineFlags::ccstrAt(name, &old_value)) return false; | |
656 size_t old_len = old_value != NULL ? strlen(old_value) : 0; | |
657 size_t new_len = strlen(new_value); | |
658 const char* value; | |
659 char* free_this_too = NULL; | |
660 if (old_len == 0) { | |
661 value = new_value; | |
662 } else if (new_len == 0) { | |
663 value = old_value; | |
664 } else { | |
6197 | 665 char* buf = NEW_C_HEAP_ARRAY(char, old_len + 1 + new_len + 1, mtInternal); |
0 | 666 // each new setting adds another LINE to the switch: |
667 sprintf(buf, "%s\n%s", old_value, new_value); | |
668 value = buf; | |
669 free_this_too = buf; | |
670 } | |
671 (void) CommandLineFlags::ccstrAtPut(name, &value, origin); | |
672 // CommandLineFlags always returns a pointer that needs freeing. | |
6197 | 673 FREE_C_HEAP_ARRAY(char, value, mtInternal); |
0 | 674 if (free_this_too != NULL) { |
675 // CommandLineFlags made its own copy, so I must delete my own temp. buffer. | |
6197 | 676 FREE_C_HEAP_ARRAY(char, free_this_too, mtInternal); |
0 | 677 } |
678 return true; | |
679 } | |
680 | |
681 bool Arguments::parse_argument(const char* arg, FlagValueOrigin origin) { | |
682 | |
683 // range of acceptable characters spelled out for portability reasons | |
684 #define NAME_RANGE "[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]" | |
685 #define BUFLEN 255 | |
686 char name[BUFLEN+1]; | |
687 char dummy; | |
688 | |
689 if (sscanf(arg, "-%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
690 return set_bool_flag(name, false, origin); | |
691 } | |
692 if (sscanf(arg, "+%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
693 return set_bool_flag(name, true, origin); | |
694 } | |
695 | |
696 char punct; | |
697 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "%c", name, &punct) == 2 && punct == '=') { | |
698 const char* value = strchr(arg, '=') + 1; | |
699 Flag* flag = Flag::find_flag(name, strlen(name)); | |
700 if (flag != NULL && flag->is_ccstr()) { | |
701 if (flag->ccstr_accumulates()) { | |
702 return append_to_string_flag(name, value, origin); | |
703 } else { | |
704 if (value[0] == '\0') { | |
705 value = NULL; | |
706 } | |
707 return set_string_flag(name, value, origin); | |
708 } | |
709 } | |
710 } | |
711 | |
712 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE ":%c", name, &punct) == 2 && punct == '=') { | |
713 const char* value = strchr(arg, '=') + 1; | |
714 // -XX:Foo:=xxx will reset the string flag to the given value. | |
715 if (value[0] == '\0') { | |
716 value = NULL; | |
717 } | |
718 return set_string_flag(name, value, origin); | |
719 } | |
720 | |
721 #define SIGNED_FP_NUMBER_RANGE "[-0123456789.]" | |
722 #define SIGNED_NUMBER_RANGE "[-0123456789]" | |
723 #define NUMBER_RANGE "[0123456789]" | |
724 char value[BUFLEN + 1]; | |
725 char value2[BUFLEN + 1]; | |
726 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_NUMBER_RANGE "." "%" XSTR(BUFLEN) NUMBER_RANGE "%c", name, value, value2, &dummy) == 3) { | |
727 // Looks like a floating-point number -- try again with more lenient format string | |
728 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_FP_NUMBER_RANGE "%c", name, value, &dummy) == 2) { | |
729 return set_fp_numeric_flag(name, value, origin); | |
730 } | |
731 } | |
732 | |
733 #define VALUE_RANGE "[-kmgtKMGT0123456789]" | |
734 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) VALUE_RANGE "%c", name, value, &dummy) == 2) { | |
735 return set_numeric_flag(name, value, origin); | |
736 } | |
737 | |
738 return false; | |
739 } | |
740 | |
741 void Arguments::add_string(char*** bldarray, int* count, const char* arg) { | |
742 assert(bldarray != NULL, "illegal argument"); | |
743 | |
744 if (arg == NULL) { | |
745 return; | |
746 } | |
747 | |
748 int index = *count; | |
749 | |
750 // expand the array and add arg to the last element | |
751 (*count)++; | |
752 if (*bldarray == NULL) { | |
6197 | 753 *bldarray = NEW_C_HEAP_ARRAY(char*, *count, mtInternal); |
0 | 754 } else { |
6197 | 755 *bldarray = REALLOC_C_HEAP_ARRAY(char*, *bldarray, *count, mtInternal); |
0 | 756 } |
757 (*bldarray)[index] = strdup(arg); | |
758 } | |
759 | |
760 void Arguments::build_jvm_args(const char* arg) { | |
761 add_string(&_jvm_args_array, &_num_jvm_args, arg); | |
762 } | |
763 | |
764 void Arguments::build_jvm_flags(const char* arg) { | |
765 add_string(&_jvm_flags_array, &_num_jvm_flags, arg); | |
766 } | |
767 | |
768 // utility function to return a string that concatenates all | |
769 // strings in a given char** array | |
770 const char* Arguments::build_resource_string(char** args, int count) { | |
771 if (args == NULL || count == 0) { | |
772 return NULL; | |
773 } | |
774 size_t length = strlen(args[0]) + 1; // add 1 for the null terminator | |
775 for (int i = 1; i < count; i++) { | |
776 length += strlen(args[i]) + 1; // add 1 for a space | |
777 } | |
778 char* s = NEW_RESOURCE_ARRAY(char, length); | |
779 strcpy(s, args[0]); | |
780 for (int j = 1; j < count; j++) { | |
781 strcat(s, " "); | |
782 strcat(s, args[j]); | |
783 } | |
784 return (const char*) s; | |
785 } | |
786 | |
787 void Arguments::print_on(outputStream* st) { | |
788 st->print_cr("VM Arguments:"); | |
789 if (num_jvm_flags() > 0) { | |
790 st->print("jvm_flags: "); print_jvm_flags_on(st); | |
791 } | |
792 if (num_jvm_args() > 0) { | |
793 st->print("jvm_args: "); print_jvm_args_on(st); | |
794 } | |
795 st->print_cr("java_command: %s", java_command() ? java_command() : "<unknown>"); | |
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796 if (_java_class_path != NULL) { |
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797 char* path = _java_class_path->value(); |
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798 st->print_cr("java_class_path (initial): %s", strlen(path) == 0 ? "<not set>" : path ); |
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799 } |
0 | 800 st->print_cr("Launcher Type: %s", _sun_java_launcher); |
801 } | |
802 | |
803 void Arguments::print_jvm_flags_on(outputStream* st) { | |
804 if (_num_jvm_flags > 0) { | |
805 for (int i=0; i < _num_jvm_flags; i++) { | |
806 st->print("%s ", _jvm_flags_array[i]); | |
807 } | |
808 st->print_cr(""); | |
809 } | |
810 } | |
811 | |
812 void Arguments::print_jvm_args_on(outputStream* st) { | |
813 if (_num_jvm_args > 0) { | |
814 for (int i=0; i < _num_jvm_args; i++) { | |
815 st->print("%s ", _jvm_args_array[i]); | |
816 } | |
817 st->print_cr(""); | |
818 } | |
819 } | |
820 | |
242 | 821 bool Arguments::process_argument(const char* arg, |
822 jboolean ignore_unrecognized, FlagValueOrigin origin) { | |
823 | |
824 JDK_Version since = JDK_Version(); | |
0 | 825 |
3250 | 826 if (parse_argument(arg, origin) || ignore_unrecognized) { |
827 return true; | |
0 | 828 } |
3250 | 829 |
830 const char * const argname = *arg == '+' || *arg == '-' ? arg + 1 : arg; | |
831 if (is_newly_obsolete(arg, &since)) { | |
832 char version[256]; | |
833 since.to_string(version, sizeof(version)); | |
834 warning("ignoring option %s; support was removed in %s", argname, version); | |
835 return true; | |
836 } | |
837 | |
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838 // For locked flags, report a custom error message if available. |
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839 // Otherwise, report the standard unrecognized VM option. |
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840 |
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841 Flag* locked_flag = Flag::find_flag((char*)argname, strlen(argname), true); |
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842 if (locked_flag != NULL) { |
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843 char locked_message_buf[BUFLEN]; |
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844 locked_flag->get_locked_message(locked_message_buf, BUFLEN); |
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845 if (strlen(locked_message_buf) == 0) { |
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846 jio_fprintf(defaultStream::error_stream(), |
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847 "Unrecognized VM option '%s'\n", argname); |
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848 } else { |
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849 jio_fprintf(defaultStream::error_stream(), "%s", locked_message_buf); |
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850 } |
6017 | 851 } else { |
852 jio_fprintf(defaultStream::error_stream(), | |
853 "Unrecognized VM option '%s'\n", argname); | |
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854 } |
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855 |
3250 | 856 // allow for commandline "commenting out" options like -XX:#+Verbose |
857 return arg[0] == '#'; | |
0 | 858 } |
859 | |
860 bool Arguments::process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized) { | |
861 FILE* stream = fopen(file_name, "rb"); | |
862 if (stream == NULL) { | |
863 if (should_exist) { | |
864 jio_fprintf(defaultStream::error_stream(), | |
865 "Could not open settings file %s\n", file_name); | |
866 return false; | |
867 } else { | |
868 return true; | |
869 } | |
870 } | |
871 | |
872 char token[1024]; | |
873 int pos = 0; | |
874 | |
875 bool in_white_space = true; | |
876 bool in_comment = false; | |
877 bool in_quote = false; | |
878 char quote_c = 0; | |
879 bool result = true; | |
880 | |
881 int c = getc(stream); | |
6901 | 882 while(c != EOF && pos < (int)(sizeof(token)-1)) { |
0 | 883 if (in_white_space) { |
884 if (in_comment) { | |
885 if (c == '\n') in_comment = false; | |
886 } else { | |
887 if (c == '#') in_comment = true; | |
888 else if (!isspace(c)) { | |
889 in_white_space = false; | |
890 token[pos++] = c; | |
891 } | |
892 } | |
893 } else { | |
894 if (c == '\n' || (!in_quote && isspace(c))) { | |
895 // token ends at newline, or at unquoted whitespace | |
896 // this allows a way to include spaces in string-valued options | |
897 token[pos] = '\0'; | |
898 logOption(token); | |
899 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
900 build_jvm_flags(token); | |
901 pos = 0; | |
902 in_white_space = true; | |
903 in_quote = false; | |
904 } else if (!in_quote && (c == '\'' || c == '"')) { | |
905 in_quote = true; | |
906 quote_c = c; | |
907 } else if (in_quote && (c == quote_c)) { | |
908 in_quote = false; | |
909 } else { | |
910 token[pos++] = c; | |
911 } | |
912 } | |
913 c = getc(stream); | |
914 } | |
915 if (pos > 0) { | |
916 token[pos] = '\0'; | |
917 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
918 build_jvm_flags(token); | |
919 } | |
920 fclose(stream); | |
921 return result; | |
922 } | |
923 | |
924 //============================================================================================================= | |
925 // Parsing of properties (-D) | |
926 | |
927 const char* Arguments::get_property(const char* key) { | |
928 return PropertyList_get_value(system_properties(), key); | |
929 } | |
930 | |
931 bool Arguments::add_property(const char* prop) { | |
932 const char* eq = strchr(prop, '='); | |
933 char* key; | |
934 // ns must be static--its address may be stored in a SystemProperty object. | |
935 const static char ns[1] = {0}; | |
936 char* value = (char *)ns; | |
937 | |
938 size_t key_len = (eq == NULL) ? strlen(prop) : (eq - prop); | |
6197 | 939 key = AllocateHeap(key_len + 1, mtInternal); |
0 | 940 strncpy(key, prop, key_len); |
941 key[key_len] = '\0'; | |
942 | |
943 if (eq != NULL) { | |
944 size_t value_len = strlen(prop) - key_len - 1; | |
6197 | 945 value = AllocateHeap(value_len + 1, mtInternal); |
0 | 946 strncpy(value, &prop[key_len + 1], value_len + 1); |
947 } | |
948 | |
949 if (strcmp(key, "java.compiler") == 0) { | |
950 process_java_compiler_argument(value); | |
951 FreeHeap(key); | |
952 if (eq != NULL) { | |
953 FreeHeap(value); | |
954 } | |
955 return true; | |
691 | 956 } else if (strcmp(key, "sun.java.command") == 0) { |
0 | 957 _java_command = value; |
958 | |
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959 // Record value in Arguments, but let it get passed to Java. |
691 | 960 } else if (strcmp(key, "sun.java.launcher.pid") == 0) { |
0 | 961 // launcher.pid property is private and is processed |
962 // in process_sun_java_launcher_properties(); | |
963 // the sun.java.launcher property is passed on to the java application | |
964 FreeHeap(key); | |
965 if (eq != NULL) { | |
966 FreeHeap(value); | |
967 } | |
968 return true; | |
691 | 969 } else if (strcmp(key, "java.vendor.url.bug") == 0) { |
0 | 970 // save it in _java_vendor_url_bug, so JVM fatal error handler can access |
971 // its value without going through the property list or making a Java call. | |
972 _java_vendor_url_bug = value; | |
691 | 973 } else if (strcmp(key, "sun.boot.library.path") == 0) { |
974 PropertyList_unique_add(&_system_properties, key, value, true); | |
975 return true; | |
0 | 976 } |
977 // Create new property and add at the end of the list | |
978 PropertyList_unique_add(&_system_properties, key, value); | |
979 return true; | |
980 } | |
981 | |
982 //=========================================================================================================== | |
983 // Setting int/mixed/comp mode flags | |
984 | |
985 void Arguments::set_mode_flags(Mode mode) { | |
986 // Set up default values for all flags. | |
987 // If you add a flag to any of the branches below, | |
988 // add a default value for it here. | |
989 set_java_compiler(false); | |
990 _mode = mode; | |
991 | |
992 // Ensure Agent_OnLoad has the correct initial values. | |
993 // This may not be the final mode; mode may change later in onload phase. | |
994 PropertyList_unique_add(&_system_properties, "java.vm.info", | |
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995 (char*)VM_Version::vm_info_string(), false); |
0 | 996 |
997 UseInterpreter = true; | |
998 UseCompiler = true; | |
999 UseLoopCounter = true; | |
1000 | |
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1001 #ifndef ZERO |
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1002 // Turn these off for mixed and comp. Leave them on for Zero. |
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1003 if (FLAG_IS_DEFAULT(UseFastAccessorMethods)) { |
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1004 UseFastAccessorMethods = (mode == _int); |
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1005 } |
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1006 if (FLAG_IS_DEFAULT(UseFastEmptyMethods)) { |
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1007 UseFastEmptyMethods = (mode == _int); |
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1008 } |
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1009 #endif |
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1010 |
0 | 1011 // Default values may be platform/compiler dependent - |
1012 // use the saved values | |
1013 ClipInlining = Arguments::_ClipInlining; | |
1014 AlwaysCompileLoopMethods = Arguments::_AlwaysCompileLoopMethods; | |
1015 UseOnStackReplacement = Arguments::_UseOnStackReplacement; | |
1016 BackgroundCompilation = Arguments::_BackgroundCompilation; | |
1017 | |
1018 // Change from defaults based on mode | |
1019 switch (mode) { | |
1020 default: | |
1021 ShouldNotReachHere(); | |
1022 break; | |
1023 case _int: | |
1024 UseCompiler = false; | |
1025 UseLoopCounter = false; | |
1026 AlwaysCompileLoopMethods = false; | |
1027 UseOnStackReplacement = false; | |
1028 break; | |
1029 case _mixed: | |
1030 // same as default | |
1031 break; | |
1032 case _comp: | |
1033 UseInterpreter = false; | |
1034 BackgroundCompilation = false; | |
1035 ClipInlining = false; | |
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1036 // Be much more aggressive in tiered mode with -Xcomp and exercise C2 more. |
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1037 // We will first compile a level 3 version (C1 with full profiling), then do one invocation of it and |
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1038 // compile a level 4 (C2) and then continue executing it. |
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1039 if (TieredCompilation) { |
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1040 Tier3InvokeNotifyFreqLog = 0; |
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1041 Tier4InvocationThreshold = 0; |
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1042 } |
0 | 1043 break; |
1044 } | |
1045 } | |
1046 | |
1047 // Conflict: required to use shared spaces (-Xshare:on), but | |
1048 // incompatible command line options were chosen. | |
1049 | |
1050 static void no_shared_spaces() { | |
1051 if (RequireSharedSpaces) { | |
1052 jio_fprintf(defaultStream::error_stream(), | |
1053 "Class data sharing is inconsistent with other specified options.\n"); | |
1054 vm_exit_during_initialization("Unable to use shared archive.", NULL); | |
1055 } else { | |
1056 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
1057 } | |
1058 } | |
1059 | |
1783 | 1060 void Arguments::set_tiered_flags() { |
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1061 // With tiered, set default policy to AdvancedThresholdPolicy, which is 3. |
1783 | 1062 if (FLAG_IS_DEFAULT(CompilationPolicyChoice)) { |
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1063 FLAG_SET_DEFAULT(CompilationPolicyChoice, 3); |
1783 | 1064 } |
1065 if (CompilationPolicyChoice < 2) { | |
1066 vm_exit_during_initialization( | |
1067 "Incompatible compilation policy selected", NULL); | |
1068 } | |
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1069 // Increase the code cache size - tiered compiles a lot more. |
1783 | 1070 if (FLAG_IS_DEFAULT(ReservedCodeCacheSize)) { |
1071 FLAG_SET_DEFAULT(ReservedCodeCacheSize, ReservedCodeCacheSize * 2); | |
1072 } | |
1073 } | |
1074 | |
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1075 #if INCLUDE_ALTERNATE_GCS |
4838 | 1076 static void disable_adaptive_size_policy(const char* collector_name) { |
1077 if (UseAdaptiveSizePolicy) { | |
1078 if (FLAG_IS_CMDLINE(UseAdaptiveSizePolicy)) { | |
1079 warning("disabling UseAdaptiveSizePolicy; it is incompatible with %s.", | |
1080 collector_name); | |
1081 } | |
1082 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); | |
1083 } | |
1084 } | |
1085 | |
0 | 1086 // If the user has chosen ParallelGCThreads > 0, we set UseParNewGC |
1087 // if it's not explictly set or unset. If the user has chosen | |
1088 // UseParNewGC and not explicitly set ParallelGCThreads we | |
1089 // set it, unless this is a single cpu machine. | |
1090 void Arguments::set_parnew_gc_flags() { | |
1064 | 1091 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC && !UseG1GC, |
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1092 "control point invariant"); |
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1093 assert(UseParNewGC, "Error"); |
0 | 1094 |
4838 | 1095 // Turn off AdaptiveSizePolicy for parnew until it is complete. |
1096 disable_adaptive_size_policy("UseParNewGC"); | |
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1097 |
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1098 if (ParallelGCThreads == 0) { |
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1099 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1100 Abstract_VM_Version::parallel_worker_threads()); |
1064 | 1101 if (ParallelGCThreads == 1) { |
0 | 1102 FLAG_SET_DEFAULT(UseParNewGC, false); |
1064 | 1103 FLAG_SET_DEFAULT(ParallelGCThreads, 0); |
0 | 1104 } |
1105 } | |
1064 | 1106 if (UseParNewGC) { |
695 | 1107 // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 respectively, |
0 | 1108 // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration |
1109 // we set them to 1024 and 1024. | |
1110 // See CR 6362902. | |
1111 if (FLAG_IS_DEFAULT(YoungPLABSize)) { | |
1112 FLAG_SET_DEFAULT(YoungPLABSize, (intx)1024); | |
1113 } | |
1114 if (FLAG_IS_DEFAULT(OldPLABSize)) { | |
1115 FLAG_SET_DEFAULT(OldPLABSize, (intx)1024); | |
1116 } | |
1117 | |
1064 | 1118 // AlwaysTenure flag should make ParNew promote all at first collection. |
0 | 1119 // See CR 6362902. |
1120 if (AlwaysTenure) { | |
6818 | 1121 FLAG_SET_CMDLINE(uintx, MaxTenuringThreshold, 0); |
0 | 1122 } |
695 | 1123 // When using compressed oops, we use local overflow stacks, |
1124 // rather than using a global overflow list chained through | |
1125 // the klass word of the object's pre-image. | |
1126 if (UseCompressedOops && !ParGCUseLocalOverflow) { | |
1127 if (!FLAG_IS_DEFAULT(ParGCUseLocalOverflow)) { | |
1128 warning("Forcing +ParGCUseLocalOverflow: needed if using compressed references"); | |
1129 } | |
1130 FLAG_SET_DEFAULT(ParGCUseLocalOverflow, true); | |
1131 } | |
1132 assert(ParGCUseLocalOverflow || !UseCompressedOops, "Error"); | |
0 | 1133 } |
1134 } | |
1135 | |
1136 // Adjust some sizes to suit CMS and/or ParNew needs; these work well on | |
1137 // sparc/solaris for certain applications, but would gain from | |
1138 // further optimization and tuning efforts, and would almost | |
1139 // certainly gain from analysis of platform and environment. | |
1140 void Arguments::set_cms_and_parnew_gc_flags() { | |
1064 | 1141 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC, "Error"); |
10
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1142 assert(UseConcMarkSweepGC, "CMS is expected to be on here"); |
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1143 |
0 | 1144 // If we are using CMS, we prefer to UseParNewGC, |
1145 // unless explicitly forbidden. | |
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1146 if (FLAG_IS_DEFAULT(UseParNewGC)) { |
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1147 FLAG_SET_ERGO(bool, UseParNewGC, true); |
0 | 1148 } |
1149 | |
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1150 // Turn off AdaptiveSizePolicy by default for cms until it is complete. |
4838 | 1151 disable_adaptive_size_policy("UseConcMarkSweepGC"); |
0 | 1152 |
1153 // In either case, adjust ParallelGCThreads and/or UseParNewGC | |
1154 // as needed. | |
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1155 if (UseParNewGC) { |
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1156 set_parnew_gc_flags(); |
0 | 1157 } |
1158 | |
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1159 // MaxHeapSize is aligned down in collectorPolicy |
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1160 size_t max_heap = align_size_down(MaxHeapSize, |
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1161 CardTableRS::ct_max_alignment_constraint()); |
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1162 |
0 | 1163 // Now make adjustments for CMS |
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1164 intx tenuring_default = (intx)6; |
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1165 size_t young_gen_per_worker = CMSYoungGenPerWorker; |
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1166 |
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1167 // Preferred young gen size for "short" pauses: |
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1168 // upper bound depends on # of threads and NewRatio. |
0 | 1169 const uintx parallel_gc_threads = |
1170 (ParallelGCThreads == 0 ? 1 : ParallelGCThreads); | |
1171 const size_t preferred_max_new_size_unaligned = | |
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1172 MIN2(max_heap/(NewRatio+1), ScaleForWordSize(young_gen_per_worker * parallel_gc_threads)); |
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1173 size_t preferred_max_new_size = |
0 | 1174 align_size_up(preferred_max_new_size_unaligned, os::vm_page_size()); |
1175 | |
1176 // Unless explicitly requested otherwise, size young gen | |
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1177 // for "short" pauses ~ CMSYoungGenPerWorker*ParallelGCThreads |
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1178 |
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1179 // If either MaxNewSize or NewRatio is set on the command line, |
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1180 // assume the user is trying to set the size of the young gen. |
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1181 if (FLAG_IS_DEFAULT(MaxNewSize) && FLAG_IS_DEFAULT(NewRatio)) { |
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1182 |
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1183 // Set MaxNewSize to our calculated preferred_max_new_size unless |
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1184 // NewSize was set on the command line and it is larger than |
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1185 // preferred_max_new_size. |
0 | 1186 if (!FLAG_IS_DEFAULT(NewSize)) { // NewSize explicitly set at command-line |
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1187 FLAG_SET_ERGO(uintx, MaxNewSize, MAX2(NewSize, preferred_max_new_size)); |
0 | 1188 } else { |
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1189 FLAG_SET_ERGO(uintx, MaxNewSize, preferred_max_new_size); |
0 | 1190 } |
1064 | 1191 if (PrintGCDetails && Verbose) { |
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1192 // Too early to use gclog_or_tty |
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1193 tty->print_cr("CMS ergo set MaxNewSize: " SIZE_FORMAT, MaxNewSize); |
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1194 } |
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1195 |
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1196 // Code along this path potentially sets NewSize and OldSize |
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1197 |
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1198 assert(max_heap >= InitialHeapSize, "Error"); |
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1199 assert(max_heap >= NewSize, "Error"); |
0 | 1200 |
1064 | 1201 if (PrintGCDetails && Verbose) { |
13
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1202 // Too early to use gclog_or_tty |
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1203 tty->print_cr("CMS set min_heap_size: " SIZE_FORMAT |
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1204 " initial_heap_size: " SIZE_FORMAT |
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1205 " max_heap: " SIZE_FORMAT, |
1064 | 1206 min_heap_size(), InitialHeapSize, max_heap); |
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1207 } |
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1208 size_t min_new = preferred_max_new_size; |
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1209 if (FLAG_IS_CMDLINE(NewSize)) { |
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1210 min_new = NewSize; |
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1211 } |
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1212 if (max_heap > min_new && min_heap_size() > min_new) { |
0 | 1213 // Unless explicitly requested otherwise, make young gen |
1214 // at least min_new, and at most preferred_max_new_size. | |
1215 if (FLAG_IS_DEFAULT(NewSize)) { | |
13
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1216 FLAG_SET_ERGO(uintx, NewSize, MAX2(NewSize, min_new)); |
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1217 FLAG_SET_ERGO(uintx, NewSize, MIN2(preferred_max_new_size, NewSize)); |
1064 | 1218 if (PrintGCDetails && Verbose) { |
13
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1219 // Too early to use gclog_or_tty |
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1220 tty->print_cr("CMS ergo set NewSize: " SIZE_FORMAT, NewSize); |
13
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1221 } |
0 | 1222 } |
1223 // Unless explicitly requested otherwise, size old gen | |
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1224 // so it's NewRatio x of NewSize. |
0 | 1225 if (FLAG_IS_DEFAULT(OldSize)) { |
1226 if (max_heap > NewSize) { | |
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1227 FLAG_SET_ERGO(uintx, OldSize, MIN2(NewRatio*NewSize, max_heap - NewSize)); |
1064 | 1228 if (PrintGCDetails && Verbose) { |
13
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1229 // Too early to use gclog_or_tty |
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1230 tty->print_cr("CMS ergo set OldSize: " SIZE_FORMAT, OldSize); |
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1231 } |
0 | 1232 } |
1233 } | |
1234 } | |
1235 } | |
1236 // Unless explicitly requested otherwise, definitely | |
1237 // promote all objects surviving "tenuring_default" scavenges. | |
1238 if (FLAG_IS_DEFAULT(MaxTenuringThreshold) && | |
1239 FLAG_IS_DEFAULT(SurvivorRatio)) { | |
6818 | 1240 FLAG_SET_ERGO(uintx, MaxTenuringThreshold, tenuring_default); |
0 | 1241 } |
1242 // If we decided above (or user explicitly requested) | |
1243 // `promote all' (via MaxTenuringThreshold := 0), | |
1244 // prefer minuscule survivor spaces so as not to waste | |
1245 // space for (non-existent) survivors | |
1246 if (FLAG_IS_DEFAULT(SurvivorRatio) && MaxTenuringThreshold == 0) { | |
13
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1247 FLAG_SET_ERGO(intx, SurvivorRatio, MAX2((intx)1024, SurvivorRatio)); |
0 | 1248 } |
1249 // If OldPLABSize is set and CMSParPromoteBlocksToClaim is not, | |
1250 // set CMSParPromoteBlocksToClaim equal to OldPLABSize. | |
1251 // This is done in order to make ParNew+CMS configuration to work | |
1252 // with YoungPLABSize and OldPLABSize options. | |
1253 // See CR 6362902. | |
1254 if (!FLAG_IS_DEFAULT(OldPLABSize)) { | |
1255 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { | |
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1256 // OldPLABSize is not the default value but CMSParPromoteBlocksToClaim |
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1257 // is. In this situtation let CMSParPromoteBlocksToClaim follow |
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1258 // the value (either from the command line or ergonomics) of |
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1259 // OldPLABSize. Following OldPLABSize is an ergonomics decision. |
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1260 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, OldPLABSize); |
1145
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1261 } else { |
0 | 1262 // OldPLABSize and CMSParPromoteBlocksToClaim are both set. |
1263 // CMSParPromoteBlocksToClaim is a collector-specific flag, so | |
1264 // we'll let it to take precedence. | |
1265 jio_fprintf(defaultStream::error_stream(), | |
886
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1266 "Both OldPLABSize and CMSParPromoteBlocksToClaim" |
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1267 " options are specified for the CMS collector." |
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1268 " CMSParPromoteBlocksToClaim will take precedence.\n"); |
0 | 1269 } |
1270 } | |
1145
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1271 if (!FLAG_IS_DEFAULT(ResizeOldPLAB) && !ResizeOldPLAB) { |
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1272 // OldPLAB sizing manually turned off: Use a larger default setting, |
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1273 // unless it was manually specified. This is because a too-low value |
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1274 // will slow down scavenges. |
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1275 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { |
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1276 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, 50); // default value before 6631166 |
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1277 } |
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1278 } |
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1279 // Overwrite OldPLABSize which is the variable we will internally use everywhere. |
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1280 FLAG_SET_ERGO(uintx, OldPLABSize, CMSParPromoteBlocksToClaim); |
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1281 // If either of the static initialization defaults have changed, note this |
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1282 // modification. |
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1283 if (!FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim) || !FLAG_IS_DEFAULT(OldPLABWeight)) { |
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1284 CFLS_LAB::modify_initialization(OldPLABSize, OldPLABWeight); |
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1285 } |
1284 | 1286 if (PrintGCDetails && Verbose) { |
1287 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
1288 MarkStackSize / K, MarkStackSizeMax / K); | |
1289 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
1290 } | |
0 | 1291 } |
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1292 #endif // INCLUDE_ALTERNATE_GCS |
0 | 1293 |
1571
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1294 void set_object_alignment() { |
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1295 // Object alignment. |
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1296 assert(is_power_of_2(ObjectAlignmentInBytes), "ObjectAlignmentInBytes must be power of 2"); |
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1297 MinObjAlignmentInBytes = ObjectAlignmentInBytes; |
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1298 assert(MinObjAlignmentInBytes >= HeapWordsPerLong * HeapWordSize, "ObjectAlignmentInBytes value is too small"); |
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1299 MinObjAlignment = MinObjAlignmentInBytes / HeapWordSize; |
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1300 assert(MinObjAlignmentInBytes == MinObjAlignment * HeapWordSize, "ObjectAlignmentInBytes value is incorrect"); |
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1301 MinObjAlignmentInBytesMask = MinObjAlignmentInBytes - 1; |
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1302 |
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1303 LogMinObjAlignmentInBytes = exact_log2(ObjectAlignmentInBytes); |
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1304 LogMinObjAlignment = LogMinObjAlignmentInBytes - LogHeapWordSize; |
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1305 |
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1306 // Oop encoding heap max |
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1307 OopEncodingHeapMax = (uint64_t(max_juint) + 1) << LogMinObjAlignmentInBytes; |
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1308 |
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1309 #if INCLUDE_ALTERNATE_GCS |
1571
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1310 // Set CMS global values |
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1311 CompactibleFreeListSpace::set_cms_values(); |
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1312 #endif // INCLUDE_ALTERNATE_GCS |
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1313 } |
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1314 |
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1315 bool verify_object_alignment() { |
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1316 // Object alignment. |
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1317 if (!is_power_of_2(ObjectAlignmentInBytes)) { |
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1318 jio_fprintf(defaultStream::error_stream(), |
1829
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1319 "error: ObjectAlignmentInBytes=%d must be power of 2\n", |
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1320 (int)ObjectAlignmentInBytes); |
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1321 return false; |
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1322 } |
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1323 if ((int)ObjectAlignmentInBytes < BytesPerLong) { |
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1324 jio_fprintf(defaultStream::error_stream(), |
1829
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1325 "error: ObjectAlignmentInBytes=%d must be greater or equal %d\n", |
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1326 (int)ObjectAlignmentInBytes, BytesPerLong); |
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1327 return false; |
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1328 } |
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1329 // It does not make sense to have big object alignment |
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1330 // since a space lost due to alignment will be greater |
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1331 // then a saved space from compressed oops. |
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1332 if ((int)ObjectAlignmentInBytes > 256) { |
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1333 jio_fprintf(defaultStream::error_stream(), |
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1334 "error: ObjectAlignmentInBytes=%d must not be greater then 256\n", |
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1335 (int)ObjectAlignmentInBytes); |
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1336 return false; |
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1337 } |
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1338 // In case page size is very small. |
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1339 if ((int)ObjectAlignmentInBytes >= os::vm_page_size()) { |
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1340 jio_fprintf(defaultStream::error_stream(), |
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1341 "error: ObjectAlignmentInBytes=%d must be less then page size %d\n", |
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1342 (int)ObjectAlignmentInBytes, os::vm_page_size()); |
1571
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1343 return false; |
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1344 } |
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1345 return true; |
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1346 } |
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1347 |
135
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1348 inline uintx max_heap_for_compressed_oops() { |
1963 | 1349 // Avoid sign flip. |
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1350 if (OopEncodingHeapMax < ClassMetaspaceSize + os::vm_page_size()) { |
1963 | 1351 return 0; |
1352 } | |
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1353 LP64_ONLY(return OopEncodingHeapMax - ClassMetaspaceSize - os::vm_page_size()); |
1064 | 1354 NOT_LP64(ShouldNotReachHere(); return 0); |
135
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1355 } |
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1356 |
0 | 1357 bool Arguments::should_auto_select_low_pause_collector() { |
1358 if (UseAutoGCSelectPolicy && | |
1359 !FLAG_IS_DEFAULT(MaxGCPauseMillis) && | |
1360 (MaxGCPauseMillis <= AutoGCSelectPauseMillis)) { | |
1361 if (PrintGCDetails) { | |
1362 // Cannot use gclog_or_tty yet. | |
1363 tty->print_cr("Automatic selection of the low pause collector" | |
1364 " based on pause goal of %d (ms)", MaxGCPauseMillis); | |
1365 } | |
1366 return true; | |
1367 } | |
1368 return false; | |
1369 } | |
1370 | |
1371 void Arguments::set_ergonomics_flags() { | |
1372 | |
4946 | 1373 if (os::is_server_class_machine()) { |
0 | 1374 // If no other collector is requested explicitly, |
1375 // let the VM select the collector based on | |
1376 // machine class and automatic selection policy. | |
1377 if (!UseSerialGC && | |
1378 !UseConcMarkSweepGC && | |
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1379 !UseG1GC && |
0 | 1380 !UseParNewGC && |
1381 FLAG_IS_DEFAULT(UseParallelGC)) { | |
1382 if (should_auto_select_low_pause_collector()) { | |
1383 FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true); | |
1384 } else { | |
1385 FLAG_SET_ERGO(bool, UseParallelGC, true); | |
1386 } | |
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1387 } |
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1388 // Shared spaces work fine with other GCs but causes bytecode rewriting |
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1389 // to be disabled, which hurts interpreter performance and decreases |
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1390 // server performance. On server class machines, keep the default |
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1391 // off unless it is asked for. Future work: either add bytecode rewriting |
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1392 // at link time, or rewrite bytecodes in non-shared methods. |
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1393 if (!DumpSharedSpaces && !RequireSharedSpaces) { |
0 | 1394 no_shared_spaces(); |
1395 } | |
1396 } | |
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1397 |
1010 | 1398 #ifndef ZERO |
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1399 #ifdef _LP64 |
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1400 // Check that UseCompressedOops can be set with the max heap size allocated |
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1401 // by ergonomics. |
187 | 1402 if (MaxHeapSize <= max_heap_for_compressed_oops()) { |
1783 | 1403 #if !defined(COMPILER1) || defined(TIERED) |
2228 | 1404 if (FLAG_IS_DEFAULT(UseCompressedOops)) { |
932 | 1405 FLAG_SET_ERGO(bool, UseCompressedOops, true); |
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1406 } |
1060 | 1407 #endif |
325
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1408 #ifdef _WIN64 |
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1409 if (UseLargePages && UseCompressedOops) { |
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1410 // Cannot allocate guard pages for implicit checks in indexed addressing |
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1411 // mode, when large pages are specified on windows. |
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1412 // This flag could be switched ON if narrow oop base address is set to 0, |
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1413 // see code in Universe::initialize_heap(). |
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1414 Universe::set_narrow_oop_use_implicit_null_checks(false); |
325
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1415 } |
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1416 #endif // _WIN64 |
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1417 } else { |
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1418 if (UseCompressedOops && !FLAG_IS_DEFAULT(UseCompressedOops)) { |
344 | 1419 warning("Max heap size too large for Compressed Oops"); |
113
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1420 FLAG_SET_DEFAULT(UseCompressedOops, false); |
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1421 FLAG_SET_DEFAULT(UseCompressedKlassPointers, false); |
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1422 } |
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1423 } |
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1424 // UseCompressedOops must be on for UseCompressedKlassPointers to be on. |
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1425 if (!UseCompressedOops) { |
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1426 if (UseCompressedKlassPointers) { |
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1427 warning("UseCompressedKlassPointers requires UseCompressedOops"); |
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1428 } |
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1429 FLAG_SET_DEFAULT(UseCompressedKlassPointers, false); |
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1430 } else { |
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1431 // Turn on UseCompressedKlassPointers too |
6848
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1432 if (FLAG_IS_DEFAULT(UseCompressedKlassPointers)) { |
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1433 FLAG_SET_ERGO(bool, UseCompressedKlassPointers, true); |
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1434 } |
6736
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1435 // Set the ClassMetaspaceSize to something that will not need to be |
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1436 // expanded, since it cannot be expanded. |
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1437 if (UseCompressedKlassPointers && FLAG_IS_DEFAULT(ClassMetaspaceSize)) { |
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1438 // 100,000 classes seems like a good size, so 100M assumes around 1K |
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1439 // per klass. The vtable and oopMap is embedded so we don't have a fixed |
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1440 // size per klass. Eventually, this will be parameterized because it |
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1441 // would also be useful to determine the optimal size of the |
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1442 // systemDictionary. |
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1443 FLAG_SET_ERGO(uintx, ClassMetaspaceSize, 100*M); |
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1444 } |
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1445 } |
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1446 // Also checks that certain machines are slower with compressed oops |
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1447 // in vm_version initialization code. |
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1448 #endif // _LP64 |
1010 | 1449 #endif // !ZERO |
0 | 1450 } |
1451 | |
1452 void Arguments::set_parallel_gc_flags() { | |
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1453 assert(UseParallelGC || UseParallelOldGC, "Error"); |
4879 | 1454 // Enable ParallelOld unless it was explicitly disabled (cmd line or rc file). |
1455 if (FLAG_IS_DEFAULT(UseParallelOldGC)) { | |
1456 FLAG_SET_DEFAULT(UseParallelOldGC, true); | |
0 | 1457 } |
4879 | 1458 FLAG_SET_DEFAULT(UseParallelGC, true); |
0 | 1459 |
1460 // If no heap maximum was requested explicitly, use some reasonable fraction | |
1461 // of the physical memory, up to a maximum of 1GB. | |
1462 if (UseParallelGC) { | |
4095
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1463 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1464 Abstract_VM_Version::parallel_worker_threads()); |
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1465 |
0 | 1466 // If InitialSurvivorRatio or MinSurvivorRatio were not specified, but the |
1467 // SurvivorRatio has been set, reset their default values to SurvivorRatio + | |
1468 // 2. By doing this we make SurvivorRatio also work for Parallel Scavenger. | |
1469 // See CR 6362902 for details. | |
1470 if (!FLAG_IS_DEFAULT(SurvivorRatio)) { | |
1471 if (FLAG_IS_DEFAULT(InitialSurvivorRatio)) { | |
1472 FLAG_SET_DEFAULT(InitialSurvivorRatio, SurvivorRatio + 2); | |
1473 } | |
1474 if (FLAG_IS_DEFAULT(MinSurvivorRatio)) { | |
1475 FLAG_SET_DEFAULT(MinSurvivorRatio, SurvivorRatio + 2); | |
1476 } | |
1477 } | |
1478 | |
1479 if (UseParallelOldGC) { | |
1480 // Par compact uses lower default values since they are treated as | |
13
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1481 // minimums. These are different defaults because of the different |
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1482 // interpretation and are not ergonomically set. |
0 | 1483 if (FLAG_IS_DEFAULT(MarkSweepDeadRatio)) { |
13
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1484 FLAG_SET_DEFAULT(MarkSweepDeadRatio, 1); |
0 | 1485 } |
1486 } | |
1487 } | |
1488 } | |
1489 | |
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1490 void Arguments::set_g1_gc_flags() { |
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1491 assert(UseG1GC, "Error"); |
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1492 #ifdef COMPILER1 |
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1493 FastTLABRefill = false; |
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1494 #endif |
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1495 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1496 Abstract_VM_Version::parallel_worker_threads()); |
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1497 if (ParallelGCThreads == 0) { |
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1498 FLAG_SET_DEFAULT(ParallelGCThreads, |
751 | 1499 Abstract_VM_Version::parallel_worker_threads()); |
342
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1500 } |
751 | 1501 |
1284 | 1502 if (FLAG_IS_DEFAULT(MarkStackSize)) { |
1311
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1503 FLAG_SET_DEFAULT(MarkStackSize, 128 * TASKQUEUE_SIZE); |
1284 | 1504 } |
1505 if (PrintGCDetails && Verbose) { | |
1506 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
1507 MarkStackSize / K, MarkStackSizeMax / K); | |
1508 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
1509 } | |
1356 | 1510 |
1511 if (FLAG_IS_DEFAULT(GCTimeRatio) || GCTimeRatio == 0) { | |
1512 // In G1, we want the default GC overhead goal to be higher than | |
1513 // say in PS. So we set it here to 10%. Otherwise the heap might | |
1514 // be expanded more aggressively than we would like it to. In | |
1515 // fact, even 10% seems to not be high enough in some cases | |
1516 // (especially small GC stress tests that the main thing they do | |
1517 // is allocation). We might consider increase it further. | |
1518 FLAG_SET_DEFAULT(GCTimeRatio, 9); | |
1519 } | |
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1520 } |
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1521 |
1064 | 1522 void Arguments::set_heap_size() { |
1523 if (!FLAG_IS_DEFAULT(DefaultMaxRAMFraction)) { | |
1524 // Deprecated flag | |
1525 FLAG_SET_CMDLINE(uintx, MaxRAMFraction, DefaultMaxRAMFraction); | |
1526 } | |
1527 | |
1528 const julong phys_mem = | |
1529 FLAG_IS_DEFAULT(MaxRAM) ? MIN2(os::physical_memory(), (julong)MaxRAM) | |
1530 : (julong)MaxRAM; | |
1531 | |
1532 // If the maximum heap size has not been set with -Xmx, | |
1533 // then set it as fraction of the size of physical memory, | |
1534 // respecting the maximum and minimum sizes of the heap. | |
342
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1535 if (FLAG_IS_DEFAULT(MaxHeapSize)) { |
1064 | 1536 julong reasonable_max = phys_mem / MaxRAMFraction; |
1537 | |
1538 if (phys_mem <= MaxHeapSize * MinRAMFraction) { | |
1539 // Small physical memory, so use a minimum fraction of it for the heap | |
1540 reasonable_max = phys_mem / MinRAMFraction; | |
1541 } else { | |
1542 // Not-small physical memory, so require a heap at least | |
1543 // as large as MaxHeapSize | |
1544 reasonable_max = MAX2(reasonable_max, (julong)MaxHeapSize); | |
1545 } | |
1546 if (!FLAG_IS_DEFAULT(ErgoHeapSizeLimit) && ErgoHeapSizeLimit != 0) { | |
1547 // Limit the heap size to ErgoHeapSizeLimit | |
1548 reasonable_max = MIN2(reasonable_max, (julong)ErgoHeapSizeLimit); | |
342
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1549 } |
1064 | 1550 if (UseCompressedOops) { |
1551 // Limit the heap size to the maximum possible when using compressed oops | |
1963 | 1552 julong max_coop_heap = (julong)max_heap_for_compressed_oops(); |
1553 if (HeapBaseMinAddress + MaxHeapSize < max_coop_heap) { | |
1554 // Heap should be above HeapBaseMinAddress to get zero based compressed oops | |
1555 // but it should be not less than default MaxHeapSize. | |
1556 max_coop_heap -= HeapBaseMinAddress; | |
1557 } | |
1558 reasonable_max = MIN2(reasonable_max, max_coop_heap); | |
1064 | 1559 } |
1560 reasonable_max = os::allocatable_physical_memory(reasonable_max); | |
1561 | |
1562 if (!FLAG_IS_DEFAULT(InitialHeapSize)) { | |
1563 // An initial heap size was specified on the command line, | |
1564 // so be sure that the maximum size is consistent. Done | |
1565 // after call to allocatable_physical_memory because that | |
1566 // method might reduce the allocation size. | |
1567 reasonable_max = MAX2(reasonable_max, (julong)InitialHeapSize); | |
1568 } | |
1569 | |
342
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1570 if (PrintGCDetails && Verbose) { |
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1571 // Cannot use gclog_or_tty yet. |
1064 | 1572 tty->print_cr(" Maximum heap size " SIZE_FORMAT, reasonable_max); |
342
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1573 } |
1064 | 1574 FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx)reasonable_max); |
1575 } | |
1576 | |
1577 // If the initial_heap_size has not been set with InitialHeapSize | |
1578 // or -Xms, then set it as fraction of the size of physical memory, | |
1579 // respecting the maximum and minimum sizes of the heap. | |
1580 if (FLAG_IS_DEFAULT(InitialHeapSize)) { | |
1074
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1581 julong reasonable_minimum = (julong)(OldSize + NewSize); |
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1582 |
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1583 reasonable_minimum = MIN2(reasonable_minimum, (julong)MaxHeapSize); |
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1584 |
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|
1585 reasonable_minimum = os::allocatable_physical_memory(reasonable_minimum); |
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1586 |
1064 | 1587 julong reasonable_initial = phys_mem / InitialRAMFraction; |
1588 | |
1074
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|
1589 reasonable_initial = MAX2(reasonable_initial, reasonable_minimum); |
1064 | 1590 reasonable_initial = MIN2(reasonable_initial, (julong)MaxHeapSize); |
1591 | |
1592 reasonable_initial = os::allocatable_physical_memory(reasonable_initial); | |
1593 | |
1594 if (PrintGCDetails && Verbose) { | |
1595 // Cannot use gclog_or_tty yet. | |
1596 tty->print_cr(" Initial heap size " SIZE_FORMAT, (uintx)reasonable_initial); | |
1074
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1597 tty->print_cr(" Minimum heap size " SIZE_FORMAT, (uintx)reasonable_minimum); |
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1598 } |
1064 | 1599 FLAG_SET_ERGO(uintx, InitialHeapSize, (uintx)reasonable_initial); |
1074
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1600 set_min_heap_size((uintx)reasonable_minimum); |
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1601 } |
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1602 } |
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1603 |
0 | 1604 // This must be called after ergonomics because we want bytecode rewriting |
1605 // if the server compiler is used, or if UseSharedSpaces is disabled. | |
1606 void Arguments::set_bytecode_flags() { | |
1607 // Better not attempt to store into a read-only space. | |
1608 if (UseSharedSpaces) { | |
1609 FLAG_SET_DEFAULT(RewriteBytecodes, false); | |
1610 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
1611 } | |
1612 | |
1613 if (!RewriteBytecodes) { | |
1614 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
1615 } | |
1616 } | |
1617 | |
1618 // Aggressive optimization flags -XX:+AggressiveOpts | |
1619 void Arguments::set_aggressive_opts_flags() { | |
17
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|
1620 #ifdef COMPILER2 |
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1621 if (AggressiveOpts || !FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
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1622 if (FLAG_IS_DEFAULT(EliminateAutoBox)) { |
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|
1623 FLAG_SET_DEFAULT(EliminateAutoBox, true); |
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|
1624 } |
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|
1625 if (FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
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|
1626 FLAG_SET_DEFAULT(AutoBoxCacheMax, 20000); |
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|
1627 } |
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|
1628 |
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|
1629 // Feed the cache size setting into the JDK |
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|
1630 char buffer[1024]; |
513
2328d1d3f8cf
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diff
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|
1631 sprintf(buffer, "java.lang.Integer.IntegerCache.high=" INTX_FORMAT, AutoBoxCacheMax); |
17
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|
1632 add_property(buffer); |
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|
1633 } |
416
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|
1634 if (AggressiveOpts && FLAG_IS_DEFAULT(BiasedLockingStartupDelay)) { |
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|
1635 FLAG_SET_DEFAULT(BiasedLockingStartupDelay, 500); |
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|
1636 } |
17
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|
1637 #endif |
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|
1638 |
0 | 1639 if (AggressiveOpts) { |
61 | 1640 // Sample flag setting code |
1641 // if (FLAG_IS_DEFAULT(EliminateZeroing)) { | |
1642 // FLAG_SET_DEFAULT(EliminateZeroing, true); | |
1643 // } | |
0 | 1644 } |
1645 } | |
1646 | |
1647 //=========================================================================================================== | |
1648 // Parsing of java.compiler property | |
1649 | |
1650 void Arguments::process_java_compiler_argument(char* arg) { | |
1651 // For backwards compatibility, Djava.compiler=NONE or "" | |
1652 // causes us to switch to -Xint mode UNLESS -Xdebug | |
1653 // is also specified. | |
1654 if (strlen(arg) == 0 || strcasecmp(arg, "NONE") == 0) { | |
1655 set_java_compiler(true); // "-Djava.compiler[=...]" most recently seen. | |
1656 } | |
1657 } | |
1658 | |
1659 void Arguments::process_java_launcher_argument(const char* launcher, void* extra_info) { | |
1660 _sun_java_launcher = strdup(launcher); | |
2302
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|
1661 if (strcmp("gamma", _sun_java_launcher) == 0) { |
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|
1662 _created_by_gamma_launcher = true; |
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|
1663 } |
0 | 1664 } |
1665 | |
1666 bool Arguments::created_by_java_launcher() { | |
1667 assert(_sun_java_launcher != NULL, "property must have value"); | |
1668 return strcmp(DEFAULT_JAVA_LAUNCHER, _sun_java_launcher) != 0; | |
1669 } | |
1670 | |
2302
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|
1671 bool Arguments::created_by_gamma_launcher() { |
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|
1672 return _created_by_gamma_launcher; |
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|
1673 } |
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|
1674 |
0 | 1675 //=========================================================================================================== |
1676 // Parsing of main arguments | |
1677 | |
1244
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|
1678 bool Arguments::verify_interval(uintx val, uintx min, |
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6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1679 uintx max, const char* name) { |
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6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
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|
1680 // Returns true iff value is in the inclusive interval [min..max] |
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|
1681 // false, otherwise. |
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|
1682 if (val >= min && val <= max) { |
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|
1683 return true; |
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|
1684 } |
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|
1685 jio_fprintf(defaultStream::error_stream(), |
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|
1686 "%s of " UINTX_FORMAT " is invalid; must be between " UINTX_FORMAT |
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|
1687 " and " UINTX_FORMAT "\n", |
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|
1688 name, val, min, max); |
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|
1689 return false; |
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|
1690 } |
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|
1691 |
1744
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|
1692 bool Arguments::verify_min_value(intx val, intx min, const char* name) { |
2366
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|
1693 // Returns true if given value is at least specified min threshold |
1744
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|
1694 // false, otherwise. |
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|
1695 if (val >= min ) { |
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6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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|
1696 return true; |
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|
1697 } |
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|
1698 jio_fprintf(defaultStream::error_stream(), |
2366
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|
1699 "%s of " INTX_FORMAT " is invalid; must be at least " INTX_FORMAT "\n", |
1744
f8c5d1bdaad4
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|
1700 name, val, min); |
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|
1701 return false; |
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|
1702 } |
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|
1703 |
0 | 1704 bool Arguments::verify_percentage(uintx value, const char* name) { |
1705 if (value <= 100) { | |
1706 return true; | |
1707 } | |
1708 jio_fprintf(defaultStream::error_stream(), | |
1709 "%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n", | |
1710 name, value); | |
1711 return false; | |
1712 } | |
1713 | |
1064 | 1714 static void force_serial_gc() { |
0 | 1715 FLAG_SET_DEFAULT(UseSerialGC, true); |
1716 FLAG_SET_DEFAULT(UseParNewGC, false); | |
1717 FLAG_SET_DEFAULT(UseConcMarkSweepGC, false); | |
945
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|
1718 FLAG_SET_DEFAULT(CMSIncrementalMode, false); // special CMS suboption |
0 | 1719 FLAG_SET_DEFAULT(UseParallelGC, false); |
1720 FLAG_SET_DEFAULT(UseParallelOldGC, false); | |
342
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6711316: Open source the Garbage-First garbage collector
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|
1721 FLAG_SET_DEFAULT(UseG1GC, false); |
0 | 1722 } |
1723 | |
1724 static bool verify_serial_gc_flags() { | |
1725 return (UseSerialGC && | |
945
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6872136: CMS: confusing message may be printed when a collector is switched off implicitly
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|
1726 !(UseParNewGC || (UseConcMarkSweepGC || CMSIncrementalMode) || UseG1GC || |
342
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|
1727 UseParallelGC || UseParallelOldGC)); |
0 | 1728 } |
1729 | |
3767
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|
1730 // check if do gclog rotation |
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|
1731 // +UseGCLogFileRotation is a must, |
2a241e764894
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|
1732 // no gc log rotation when log file not supplied or |
2a241e764894
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|
1733 // NumberOfGCLogFiles is 0, or GCLogFileSize is 0 |
2a241e764894
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|
1734 void check_gclog_consistency() { |
2a241e764894
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|
1735 if (UseGCLogFileRotation) { |
2a241e764894
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|
1736 if ((Arguments::gc_log_filename() == NULL) || |
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|
1737 (NumberOfGCLogFiles == 0) || |
2a241e764894
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|
1738 (GCLogFileSize == 0)) { |
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
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|
1739 jio_fprintf(defaultStream::output_stream(), |
3769
ef2d1b8f2dd4
7051430: CMS: ongoing CMS cycle should terminate abruptly to allow prompt JVM termination at exit
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3767
diff
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|
1740 "To enable GC log rotation, use -Xloggc:<filename> -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=<num_of_files> -XX:GCLogFileSize=<num_of_size>\n" |
3767
2a241e764894
6941923: RFE: Handling large log files produced by long running Java Applications
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diff
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|
1741 "where num_of_file > 0 and num_of_size > 0\n" |
2a241e764894
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|
1742 "GC log rotation is turned off\n"); |
2a241e764894
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|
1743 UseGCLogFileRotation = false; |
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|
1744 } |
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|
1745 } |
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|
1746 |
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|
1747 if (UseGCLogFileRotation && GCLogFileSize < 8*K) { |
2a241e764894
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|
1748 FLAG_SET_CMDLINE(uintx, GCLogFileSize, 8*K); |
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|
1749 jio_fprintf(defaultStream::output_stream(), |
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|
1750 "GCLogFileSize changed to minimum 8K\n"); |
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|
1751 } |
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|
1752 } |
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|
1753 |
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28372612af5e
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|
1754 // Check consistency of GC selection |
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|
1755 bool Arguments::check_gc_consistency() { |
3767
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|
1756 check_gclog_consistency(); |
10
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|
1757 bool status = true; |
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|
1758 // Ensure that the user has not selected conflicting sets |
28372612af5e
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|
1759 // of collectors. [Note: this check is merely a user convenience; |
28372612af5e
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diff
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|
1760 // collectors over-ride each other so that only a non-conflicting |
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diff
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|
1761 // set is selected; however what the user gets is not what they |
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diff
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|
1762 // may have expected from the combination they asked for. It's |
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0
diff
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|
1763 // better to reduce user confusion by not allowing them to |
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0
diff
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|
1764 // select conflicting combinations. |
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|
1765 uint i = 0; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
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|
1766 if (UseSerialGC) i++; |
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|
1767 if (UseConcMarkSweepGC || UseParNewGC) i++; |
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|
1768 if (UseParallelGC || UseParallelOldGC) i++; |
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
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|
1769 if (UseG1GC) i++; |
10
28372612af5e
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|
1770 if (i > 1) { |
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|
1771 jio_fprintf(defaultStream::error_stream(), |
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|
1772 "Conflicting collector combinations in option list; " |
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|
1773 "please refer to the release notes for the combinations " |
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diff
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|
1774 "allowed\n"); |
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|
1775 status = false; |
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|
1776 } |
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|
1777 |
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|
1778 return status; |
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|
1779 } |
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|
1780 |
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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diff
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|
1781 // Check stack pages settings |
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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|
1782 bool Arguments::check_stack_pages() |
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6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
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|
1783 { |
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|
1784 bool status = true; |
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|
1785 status = status && verify_min_value(StackYellowPages, 1, "StackYellowPages"); |
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|
1786 status = status && verify_min_value(StackRedPages, 1, "StackRedPages"); |
1867
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
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1864
diff
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|
1787 // greater stack shadow pages can't generate instruction to bang stack |
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1864
diff
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|
1788 status = status && verify_interval(StackShadowPages, 1, 50, "StackShadowPages"); |
1744
f8c5d1bdaad4
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|
1789 return status; |
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|
1790 } |
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|
1791 |
0 | 1792 // Check the consistency of vm_init_args |
1793 bool Arguments::check_vm_args_consistency() { | |
1794 // Method for adding checks for flag consistency. | |
1795 // The intent is to warn the user of all possible conflicts, | |
1796 // before returning an error. | |
1797 // Note: Needs platform-dependent factoring. | |
1798 bool status = true; | |
1799 | |
1800 #if ( (defined(COMPILER2) && defined(SPARC))) | |
1801 // NOTE: The call to VM_Version_init depends on the fact that VM_Version_init | |
1802 // on sparc doesn't require generation of a stub as is the case on, e.g., | |
1803 // x86. Normally, VM_Version_init must be called from init_globals in | |
1804 // init.cpp, which is called by the initial java thread *after* arguments | |
1805 // have been parsed. VM_Version_init gets called twice on sparc. | |
1806 extern void VM_Version_init(); | |
1807 VM_Version_init(); | |
1808 if (!VM_Version::has_v9()) { | |
1809 jio_fprintf(defaultStream::error_stream(), | |
1810 "V8 Machine detected, Server requires V9\n"); | |
1811 status = false; | |
1812 } | |
1813 #endif /* COMPILER2 && SPARC */ | |
1814 | |
1815 // Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product | |
1816 // builds so the cost of stack banging can be measured. | |
1817 #if (defined(PRODUCT) && defined(SOLARIS)) | |
1818 if (!UseBoundThreads && !UseStackBanging) { | |
1819 jio_fprintf(defaultStream::error_stream(), | |
1820 "-UseStackBanging conflicts with -UseBoundThreads\n"); | |
1821 | |
1822 status = false; | |
1823 } | |
1824 #endif | |
1825 | |
1826 if (TLABRefillWasteFraction == 0) { | |
1827 jio_fprintf(defaultStream::error_stream(), | |
1828 "TLABRefillWasteFraction should be a denominator, " | |
1829 "not " SIZE_FORMAT "\n", | |
1830 TLABRefillWasteFraction); | |
1831 status = false; | |
1832 } | |
1833 | |
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|
1834 status = status && verify_percentage(AdaptiveSizePolicyWeight, |
0 | 1835 "AdaptiveSizePolicyWeight"); |
10
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|
1836 status = status && verify_percentage(ThresholdTolerance, "ThresholdTolerance"); |
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|
1837 status = status && verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio"); |
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|
1838 status = status && verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio"); |
0 | 1839 |
6982
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|
1840 // Divide by bucket size to prevent a large size from causing rollover when |
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7122219: Passed StringTableSize value not verified
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|
1841 // calculating amount of memory needed to be allocated for the String table. |
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|
1842 status = status && verify_interval(StringTableSize, defaultStringTableSize, |
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|
1843 (max_uintx / StringTable::bucket_size()), "StringTable size"); |
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|
1844 |
0 | 1845 if (MinHeapFreeRatio > MaxHeapFreeRatio) { |
1846 jio_fprintf(defaultStream::error_stream(), | |
1847 "MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or " | |
1848 "equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n", | |
1849 MinHeapFreeRatio, MaxHeapFreeRatio); | |
1850 status = false; | |
1851 } | |
1852 // Keeping the heap 100% free is hard ;-) so limit it to 99%. | |
1853 MinHeapFreeRatio = MIN2(MinHeapFreeRatio, (uintx) 99); | |
1854 | |
1855 if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) { | |
1856 MarkSweepAlwaysCompactCount = 1; // Move objects every gc. | |
1857 } | |
1858 | |
483
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|
1859 if (UseParallelOldGC && ParallelOldGCSplitALot) { |
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|
1860 // Settings to encourage splitting. |
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|
1861 if (!FLAG_IS_CMDLINE(NewRatio)) { |
0f773163217d
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|
1862 FLAG_SET_CMDLINE(intx, NewRatio, 2); |
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|
1863 } |
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|
1864 if (!FLAG_IS_CMDLINE(ScavengeBeforeFullGC)) { |
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|
1865 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
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|
1866 } |
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|
1867 } |
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|
1868 |
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|
1869 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
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|
1870 status = status && verify_percentage(GCTimeLimit, "GCTimeLimit"); |
0 | 1871 if (GCTimeLimit == 100) { |
1872 // Turn off gc-overhead-limit-exceeded checks | |
1873 FLAG_SET_DEFAULT(UseGCOverheadLimit, false); | |
1874 } | |
1875 | |
10
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|
1876 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
0 | 1877 |
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|
1878 status = status && check_gc_consistency(); |
1744
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|
1879 status = status && check_stack_pages(); |
0 | 1880 |
1881 if (_has_alloc_profile) { | |
1882 if (UseParallelGC || UseParallelOldGC) { | |
1883 jio_fprintf(defaultStream::error_stream(), | |
1884 "error: invalid argument combination.\n" | |
1885 "Allocation profiling (-Xaprof) cannot be used together with " | |
1886 "Parallel GC (-XX:+UseParallelGC or -XX:+UseParallelOldGC).\n"); | |
1887 status = false; | |
1888 } | |
1889 if (UseConcMarkSweepGC) { | |
1890 jio_fprintf(defaultStream::error_stream(), | |
1891 "error: invalid argument combination.\n" | |
1892 "Allocation profiling (-Xaprof) cannot be used together with " | |
1893 "the CMS collector (-XX:+UseConcMarkSweepGC).\n"); | |
1894 status = false; | |
1895 } | |
1896 } | |
1897 | |
1898 if (CMSIncrementalMode) { | |
1899 if (!UseConcMarkSweepGC) { | |
1900 jio_fprintf(defaultStream::error_stream(), | |
1901 "error: invalid argument combination.\n" | |
1902 "The CMS collector (-XX:+UseConcMarkSweepGC) must be " | |
1903 "selected in order\nto use CMSIncrementalMode.\n"); | |
1904 status = false; | |
1905 } else { | |
10
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|
1906 status = status && verify_percentage(CMSIncrementalDutyCycle, |
0 | 1907 "CMSIncrementalDutyCycle"); |
10
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|
1908 status = status && verify_percentage(CMSIncrementalDutyCycleMin, |
0 | 1909 "CMSIncrementalDutyCycleMin"); |
10
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|
1910 status = status && verify_percentage(CMSIncrementalSafetyFactor, |
0 | 1911 "CMSIncrementalSafetyFactor"); |
10
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1912 status = status && verify_percentage(CMSIncrementalOffset, |
0 | 1913 "CMSIncrementalOffset"); |
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1914 status = status && verify_percentage(CMSExpAvgFactor, |
0 | 1915 "CMSExpAvgFactor"); |
1916 // If it was not set on the command line, set | |
1917 // CMSInitiatingOccupancyFraction to 1 so icms can initiate cycles early. | |
1918 if (CMSInitiatingOccupancyFraction < 0) { | |
1919 FLAG_SET_DEFAULT(CMSInitiatingOccupancyFraction, 1); | |
1920 } | |
1921 } | |
1922 } | |
1923 | |
1924 // CMS space iteration, which FLSVerifyAllHeapreferences entails, | |
1925 // insists that we hold the requisite locks so that the iteration is | |
1926 // MT-safe. For the verification at start-up and shut-down, we don't | |
1927 // yet have a good way of acquiring and releasing these locks, | |
1928 // which are not visible at the CollectedHeap level. We want to | |
1929 // be able to acquire these locks and then do the iteration rather | |
1930 // than just disable the lock verification. This will be fixed under | |
1931 // bug 4788986. | |
1932 if (UseConcMarkSweepGC && FLSVerifyAllHeapReferences) { | |
1933 if (VerifyGCStartAt == 0) { | |
1934 warning("Heap verification at start-up disabled " | |
1935 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
1936 VerifyGCStartAt = 1; // Disable verification at start-up | |
1937 } | |
1938 if (VerifyBeforeExit) { | |
1939 warning("Heap verification at shutdown disabled " | |
1940 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
1941 VerifyBeforeExit = false; // Disable verification at shutdown | |
1942 } | |
1943 } | |
1944 | |
1945 // Note: only executed in non-PRODUCT mode | |
1946 if (!UseAsyncConcMarkSweepGC && | |
1947 (ExplicitGCInvokesConcurrent || | |
1948 ExplicitGCInvokesConcurrentAndUnloadsClasses)) { | |
1949 jio_fprintf(defaultStream::error_stream(), | |
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1950 "error: +ExplicitGCInvokesConcurrent[AndUnloadsClasses] conflicts" |
0 | 1951 " with -UseAsyncConcMarkSweepGC"); |
1952 status = false; | |
1953 } | |
1954 | |
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1955 status = status && verify_min_value(ParGCArrayScanChunk, 1, "ParGCArrayScanChunk"); |
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1956 |
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1957 #ifndef SERIALGC |
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1958 if (UseG1GC) { |
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1959 status = status && verify_percentage(InitiatingHeapOccupancyPercent, |
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1960 "InitiatingHeapOccupancyPercent"); |
2174
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|
1961 status = status && verify_min_value(G1RefProcDrainInterval, 1, |
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|
1962 "G1RefProcDrainInterval"); |
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|
1963 status = status && verify_min_value((intx)G1ConcMarkStepDurationMillis, 1, |
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1964 "G1ConcMarkStepDurationMillis"); |
1283
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|
1965 } |
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|
1966 #endif |
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|
1967 |
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1968 status = status && verify_interval(RefDiscoveryPolicy, |
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|
1969 ReferenceProcessor::DiscoveryPolicyMin, |
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|
1970 ReferenceProcessor::DiscoveryPolicyMax, |
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|
1971 "RefDiscoveryPolicy"); |
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|
1972 |
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|
1973 // Limit the lower bound of this flag to 1 as it is used in a division |
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1974 // expression. |
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|
1975 status = status && verify_interval(TLABWasteTargetPercent, |
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|
1976 1, 100, "TLABWasteTargetPercent"); |
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|
1977 |
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1978 status = status && verify_object_alignment(); |
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|
1979 |
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|
1980 status = status && verify_min_value(ClassMetaspaceSize, 1*M, |
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|
1981 "ClassMetaspaceSize"); |
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|
1982 |
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|
1983 #ifdef SPARC |
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|
1984 if (UseConcMarkSweepGC || UseG1GC) { |
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|
1985 // Issue a stern warning if the user has explicitly set |
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|
1986 // UseMemSetInBOT (it is known to cause issues), but allow |
bc675e55b48c
7193946: Move warnings associated with UseMemSetInBOT flag
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diff
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|
1987 // use for experimentation and debugging. |
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|
1988 if (VM_Version::is_sun4v() && UseMemSetInBOT) { |
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diff
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|
1989 assert(!FLAG_IS_DEFAULT(UseMemSetInBOT), "Error"); |
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diff
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|
1990 warning("Experimental flag -XX:+UseMemSetInBOT is known to cause instability" |
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diff
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|
1991 " on sun4v; please understand that you are using at your own risk!"); |
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diff
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|
1992 } |
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diff
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|
1993 } |
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diff
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|
1994 #endif // SPARC |
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diff
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|
1995 |
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diff
changeset
|
1996 if (PrintNMTStatistics) { |
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diff
changeset
|
1997 #if INCLUDE_NMT |
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diff
changeset
|
1998 if (MemTracker::tracking_level() == MemTracker::NMT_off) { |
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7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
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diff
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|
1999 #endif // INCLUDE_NMT |
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7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
2000 warning("PrintNMTStatistics is disabled, because native memory tracking is not enabled"); |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
2001 PrintNMTStatistics = false; |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
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6818
diff
changeset
|
2002 #if INCLUDE_NMT |
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diff
changeset
|
2003 } |
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6818
diff
changeset
|
2004 #endif |
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diff
changeset
|
2005 } |
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7188594: Print statistic collected by NMT with VM flag
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diff
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|
2006 |
0 | 2007 return status; |
2008 } | |
2009 | |
2010 bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore, | |
2011 const char* option_type) { | |
2012 if (ignore) return false; | |
2013 | |
2014 const char* spacer = " "; | |
2015 if (option_type == NULL) { | |
2016 option_type = ++spacer; // Set both to the empty string. | |
2017 } | |
2018 | |
2019 if (os::obsolete_option(option)) { | |
2020 jio_fprintf(defaultStream::error_stream(), | |
2021 "Obsolete %s%soption: %s\n", option_type, spacer, | |
2022 option->optionString); | |
2023 return false; | |
2024 } else { | |
2025 jio_fprintf(defaultStream::error_stream(), | |
2026 "Unrecognized %s%soption: %s\n", option_type, spacer, | |
2027 option->optionString); | |
2028 return true; | |
2029 } | |
2030 } | |
2031 | |
2032 static const char* user_assertion_options[] = { | |
2033 "-da", "-ea", "-disableassertions", "-enableassertions", 0 | |
2034 }; | |
2035 | |
2036 static const char* system_assertion_options[] = { | |
2037 "-dsa", "-esa", "-disablesystemassertions", "-enablesystemassertions", 0 | |
2038 }; | |
2039 | |
2040 // Return true if any of the strings in null-terminated array 'names' matches. | |
2041 // If tail_allowed is true, then the tail must begin with a colon; otherwise, | |
2042 // the option must match exactly. | |
2043 static bool match_option(const JavaVMOption* option, const char** names, const char** tail, | |
2044 bool tail_allowed) { | |
2045 for (/* empty */; *names != NULL; ++names) { | |
2046 if (match_option(option, *names, tail)) { | |
2047 if (**tail == '\0' || tail_allowed && **tail == ':') { | |
2048 return true; | |
2049 } | |
2050 } | |
2051 } | |
2052 return false; | |
2053 } | |
2054 | |
1284 | 2055 bool Arguments::parse_uintx(const char* value, |
2056 uintx* uintx_arg, | |
2057 uintx min_size) { | |
2058 | |
2059 // Check the sign first since atomull() parses only unsigned values. | |
2060 bool value_is_positive = !(*value == '-'); | |
2061 | |
2062 if (value_is_positive) { | |
2063 julong n; | |
2064 bool good_return = atomull(value, &n); | |
2065 if (good_return) { | |
2066 bool above_minimum = n >= min_size; | |
2067 bool value_is_too_large = n > max_uintx; | |
2068 | |
2069 if (above_minimum && !value_is_too_large) { | |
2070 *uintx_arg = n; | |
2071 return true; | |
2072 } | |
2073 } | |
2074 } | |
2075 return false; | |
2076 } | |
2077 | |
0 | 2078 Arguments::ArgsRange Arguments::parse_memory_size(const char* s, |
489
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
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483
diff
changeset
|
2079 julong* long_arg, |
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2080 julong min_size) { |
2494ab195856
6653214: MemoryPoolMXBean.setUsageThreshold() does not support large heap sizes.
swamyv
parents:
483
diff
changeset
|
2081 if (!atomull(s, long_arg)) return arg_unreadable; |
0 | 2082 return check_memory_size(*long_arg, min_size); |
2083 } | |
2084 | |
2085 // Parse JavaVMInitArgs structure | |
2086 | |
2087 jint Arguments::parse_vm_init_args(const JavaVMInitArgs* args) { | |
2088 // For components of the system classpath. | |
2089 SysClassPath scp(Arguments::get_sysclasspath()); | |
2090 bool scp_assembly_required = false; | |
2091 | |
2092 // Save default settings for some mode flags | |
2093 Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
2094 Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
2095 Arguments::_ClipInlining = ClipInlining; | |
2096 Arguments::_BackgroundCompilation = BackgroundCompilation; | |
2097 | |
3341
e9b8ef09622a
7041582: set_mode_flags isn't called without -Xmixed specified
never
parents:
3261
diff
changeset
|
2098 // Setup flags for mixed which is the default |
e9b8ef09622a
7041582: set_mode_flags isn't called without -Xmixed specified
never
parents:
3261
diff
changeset
|
2099 set_mode_flags(_mixed); |
e9b8ef09622a
7041582: set_mode_flags isn't called without -Xmixed specified
never
parents:
3261
diff
changeset
|
2100 |
0 | 2101 // Parse JAVA_TOOL_OPTIONS environment variable (if present) |
2102 jint result = parse_java_tool_options_environment_variable(&scp, &scp_assembly_required); | |
2103 if (result != JNI_OK) { | |
2104 return result; | |
2105 } | |
2106 | |
2107 // Parse JavaVMInitArgs structure passed in | |
2108 result = parse_each_vm_init_arg(args, &scp, &scp_assembly_required, COMMAND_LINE); | |
2109 if (result != JNI_OK) { | |
2110 return result; | |
2111 } | |
2112 | |
531
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2113 if (AggressiveOpts) { |
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2114 // Insert alt-rt.jar between user-specified bootclasspath |
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2115 // prefix and the default bootclasspath. os::set_boot_path() |
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2116 // uses meta_index_dir as the default bootclasspath directory. |
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2117 const char* altclasses_jar = "alt-rt.jar"; |
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2118 size_t altclasses_path_len = strlen(get_meta_index_dir()) + 1 + |
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2119 strlen(altclasses_jar); |
6197 | 2120 char* altclasses_path = NEW_C_HEAP_ARRAY(char, altclasses_path_len, mtInternal); |
531
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2121 strcpy(altclasses_path, get_meta_index_dir()); |
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
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513
diff
changeset
|
2122 strcat(altclasses_path, altclasses_jar); |
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
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513
diff
changeset
|
2123 scp.add_suffix_to_prefix(altclasses_path); |
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2124 scp_assembly_required = true; |
6197 | 2125 FREE_C_HEAP_ARRAY(char, altclasses_path, mtInternal); |
531
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2126 } |
40ee984935b9
6792705: Add JAR file to bootclasspath when using AggressiveOpts
phh
parents:
513
diff
changeset
|
2127 |
5915 | 2128 if (WhiteBoxAPI) { |
2129 // Append wb.jar to bootclasspath if enabled | |
2130 const char* wb_jar = "wb.jar"; | |
2131 size_t wb_path_len = strlen(get_meta_index_dir()) + 1 + | |
2132 strlen(wb_jar); | |
6197 | 2133 char* wb_path = NEW_C_HEAP_ARRAY(char, wb_path_len, mtInternal); |
5915 | 2134 strcpy(wb_path, get_meta_index_dir()); |
2135 strcat(wb_path, wb_jar); | |
2136 scp.add_suffix(wb_path); | |
2137 scp_assembly_required = true; | |
6197 | 2138 FREE_C_HEAP_ARRAY(char, wb_path, mtInternal); |
5915 | 2139 } |
2140 | |
0 | 2141 // Parse _JAVA_OPTIONS environment variable (if present) (mimics classic VM) |
2142 result = parse_java_options_environment_variable(&scp, &scp_assembly_required); | |
2143 if (result != JNI_OK) { | |
2144 return result; | |
2145 } | |
2146 | |
2147 // Do final processing now that all arguments have been parsed | |
2148 result = finalize_vm_init_args(&scp, scp_assembly_required); | |
2149 if (result != JNI_OK) { | |
2150 return result; | |
2151 } | |
2152 | |
2153 return JNI_OK; | |
2154 } | |
2155 | |
2156 jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args, | |
2157 SysClassPath* scp_p, | |
2158 bool* scp_assembly_required_p, | |
2159 FlagValueOrigin origin) { | |
2160 // Remaining part of option string | |
2161 const char* tail; | |
2162 | |
2163 // iterate over arguments | |
2164 for (int index = 0; index < args->nOptions; index++) { | |
2165 bool is_absolute_path = false; // for -agentpath vs -agentlib | |
2166 | |
2167 const JavaVMOption* option = args->options + index; | |
2168 | |
2169 if (!match_option(option, "-Djava.class.path", &tail) && | |
2170 !match_option(option, "-Dsun.java.command", &tail) && | |
2171 !match_option(option, "-Dsun.java.launcher", &tail)) { | |
2172 | |
2173 // add all jvm options to the jvm_args string. This string | |
2174 // is used later to set the java.vm.args PerfData string constant. | |
2175 // the -Djava.class.path and the -Dsun.java.command options are | |
2176 // omitted from jvm_args string as each have their own PerfData | |
2177 // string constant object. | |
2178 build_jvm_args(option->optionString); | |
2179 } | |
2180 | |
2181 // -verbose:[class/gc/jni] | |
2182 if (match_option(option, "-verbose", &tail)) { | |
2183 if (!strcmp(tail, ":class") || !strcmp(tail, "")) { | |
2184 FLAG_SET_CMDLINE(bool, TraceClassLoading, true); | |
2185 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
2186 } else if (!strcmp(tail, ":gc")) { | |
2187 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
2188 } else if (!strcmp(tail, ":jni")) { | |
2189 FLAG_SET_CMDLINE(bool, PrintJNIResolving, true); | |
2190 } | |
2191 // -da / -ea / -disableassertions / -enableassertions | |
2192 // These accept an optional class/package name separated by a colon, e.g., | |
2193 // -da:java.lang.Thread. | |
2194 } else if (match_option(option, user_assertion_options, &tail, true)) { | |
2195 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
2196 if (*tail == '\0') { | |
2197 JavaAssertions::setUserClassDefault(enable); | |
2198 } else { | |
2199 assert(*tail == ':', "bogus match by match_option()"); | |
2200 JavaAssertions::addOption(tail + 1, enable); | |
2201 } | |
2202 // -dsa / -esa / -disablesystemassertions / -enablesystemassertions | |
2203 } else if (match_option(option, system_assertion_options, &tail, false)) { | |
2204 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
2205 JavaAssertions::setSystemClassDefault(enable); | |
2206 // -bootclasspath: | |
2207 } else if (match_option(option, "-Xbootclasspath:", &tail)) { | |
2208 scp_p->reset_path(tail); | |
2209 *scp_assembly_required_p = true; | |
2210 // -bootclasspath/a: | |
2211 } else if (match_option(option, "-Xbootclasspath/a:", &tail)) { | |
2212 scp_p->add_suffix(tail); | |
2213 *scp_assembly_required_p = true; | |
2214 // -bootclasspath/p: | |
2215 } else if (match_option(option, "-Xbootclasspath/p:", &tail)) { | |
2216 scp_p->add_prefix(tail); | |
2217 *scp_assembly_required_p = true; | |
2218 // -Xrun | |
2219 } else if (match_option(option, "-Xrun", &tail)) { | |
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2220 if (tail != NULL) { |
0 | 2221 const char* pos = strchr(tail, ':'); |
2222 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
6197 | 2223 char* name = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len + 1, mtInternal), tail, len); |
0 | 2224 name[len] = '\0'; |
2225 | |
2226 char *options = NULL; | |
2227 if(pos != NULL) { | |
2228 size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied. | |
6197 | 2229 options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2, mtInternal), pos+1, len2); |
0 | 2230 } |
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2231 #if !INCLUDE_JVMTI |
0 | 2232 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { |
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2233 warning("profiling and debugging agents are not supported in this VM"); |
0 | 2234 } else |
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2235 #endif // !INCLUDE_JVMTI |
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2236 add_init_library(name, options); |
0 | 2237 } |
2238 // -agentlib and -agentpath | |
2239 } else if (match_option(option, "-agentlib:", &tail) || | |
2240 (is_absolute_path = match_option(option, "-agentpath:", &tail))) { | |
2241 if(tail != NULL) { | |
2242 const char* pos = strchr(tail, '='); | |
2243 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
6197 | 2244 char* name = strncpy(NEW_C_HEAP_ARRAY(char, len + 1, mtInternal), tail, len); |
0 | 2245 name[len] = '\0'; |
2246 | |
2247 char *options = NULL; | |
2248 if(pos != NULL) { | |
6197 | 2249 options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1, mtInternal), pos + 1); |
0 | 2250 } |
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2251 #if !INCLUDE_JVMTI |
0 | 2252 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { |
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2253 warning("profiling and debugging agents are not supported in this VM"); |
0 | 2254 } else |
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2255 #endif // !INCLUDE_JVMTI |
0 | 2256 add_init_agent(name, options, is_absolute_path); |
2257 | |
2258 } | |
2259 // -javaagent | |
2260 } else if (match_option(option, "-javaagent:", &tail)) { | |
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2261 #if !INCLUDE_JVMTI |
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2262 warning("Instrumentation agents are not supported in this VM"); |
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2263 #else |
0 | 2264 if(tail != NULL) { |
6197 | 2265 char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1, mtInternal), tail); |
0 | 2266 add_init_agent("instrument", options, false); |
2267 } | |
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2268 #endif // !INCLUDE_JVMTI |
0 | 2269 // -Xnoclassgc |
2270 } else if (match_option(option, "-Xnoclassgc", &tail)) { | |
2271 FLAG_SET_CMDLINE(bool, ClassUnloading, false); | |
2272 // -Xincgc: i-CMS | |
2273 } else if (match_option(option, "-Xincgc", &tail)) { | |
2274 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
2275 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, true); | |
2276 // -Xnoincgc: no i-CMS | |
2277 } else if (match_option(option, "-Xnoincgc", &tail)) { | |
2278 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
2279 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, false); | |
2280 // -Xconcgc | |
2281 } else if (match_option(option, "-Xconcgc", &tail)) { | |
2282 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
2283 // -Xnoconcgc | |
2284 } else if (match_option(option, "-Xnoconcgc", &tail)) { | |
2285 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
2286 // -Xbatch | |
2287 } else if (match_option(option, "-Xbatch", &tail)) { | |
2288 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
2289 // -Xmn for compatibility with other JVM vendors | |
2290 } else if (match_option(option, "-Xmn", &tail)) { | |
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2291 julong long_initial_eden_size = 0; |
0 | 2292 ArgsRange errcode = parse_memory_size(tail, &long_initial_eden_size, 1); |
2293 if (errcode != arg_in_range) { | |
2294 jio_fprintf(defaultStream::error_stream(), | |
2295 "Invalid initial eden size: %s\n", option->optionString); | |
2296 describe_range_error(errcode); | |
2297 return JNI_EINVAL; | |
2298 } | |
1064 | 2299 FLAG_SET_CMDLINE(uintx, MaxNewSize, (uintx)long_initial_eden_size); |
2300 FLAG_SET_CMDLINE(uintx, NewSize, (uintx)long_initial_eden_size); | |
0 | 2301 // -Xms |
2302 } else if (match_option(option, "-Xms", &tail)) { | |
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2303 julong long_initial_heap_size = 0; |
0 | 2304 ArgsRange errcode = parse_memory_size(tail, &long_initial_heap_size, 1); |
2305 if (errcode != arg_in_range) { | |
2306 jio_fprintf(defaultStream::error_stream(), | |
2307 "Invalid initial heap size: %s\n", option->optionString); | |
2308 describe_range_error(errcode); | |
2309 return JNI_EINVAL; | |
2310 } | |
1064 | 2311 FLAG_SET_CMDLINE(uintx, InitialHeapSize, (uintx)long_initial_heap_size); |
0 | 2312 // Currently the minimum size and the initial heap sizes are the same. |
1064 | 2313 set_min_heap_size(InitialHeapSize); |
0 | 2314 // -Xmx |
2315 } else if (match_option(option, "-Xmx", &tail)) { | |
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2316 julong long_max_heap_size = 0; |
0 | 2317 ArgsRange errcode = parse_memory_size(tail, &long_max_heap_size, 1); |
2318 if (errcode != arg_in_range) { | |
2319 jio_fprintf(defaultStream::error_stream(), | |
2320 "Invalid maximum heap size: %s\n", option->optionString); | |
2321 describe_range_error(errcode); | |
2322 return JNI_EINVAL; | |
2323 } | |
1064 | 2324 FLAG_SET_CMDLINE(uintx, MaxHeapSize, (uintx)long_max_heap_size); |
0 | 2325 // Xmaxf |
2326 } else if (match_option(option, "-Xmaxf", &tail)) { | |
2327 int maxf = (int)(atof(tail) * 100); | |
2328 if (maxf < 0 || maxf > 100) { | |
2329 jio_fprintf(defaultStream::error_stream(), | |
2330 "Bad max heap free percentage size: %s\n", | |
2331 option->optionString); | |
2332 return JNI_EINVAL; | |
2333 } else { | |
2334 FLAG_SET_CMDLINE(uintx, MaxHeapFreeRatio, maxf); | |
2335 } | |
2336 // Xminf | |
2337 } else if (match_option(option, "-Xminf", &tail)) { | |
2338 int minf = (int)(atof(tail) * 100); | |
2339 if (minf < 0 || minf > 100) { | |
2340 jio_fprintf(defaultStream::error_stream(), | |
2341 "Bad min heap free percentage size: %s\n", | |
2342 option->optionString); | |
2343 return JNI_EINVAL; | |
2344 } else { | |
2345 FLAG_SET_CMDLINE(uintx, MinHeapFreeRatio, minf); | |
2346 } | |
2347 // -Xss | |
2348 } else if (match_option(option, "-Xss", &tail)) { | |
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2349 julong long_ThreadStackSize = 0; |
0 | 2350 ArgsRange errcode = parse_memory_size(tail, &long_ThreadStackSize, 1000); |
2351 if (errcode != arg_in_range) { | |
2352 jio_fprintf(defaultStream::error_stream(), | |
2353 "Invalid thread stack size: %s\n", option->optionString); | |
2354 describe_range_error(errcode); | |
2355 return JNI_EINVAL; | |
2356 } | |
2357 // Internally track ThreadStackSize in units of 1024 bytes. | |
2358 FLAG_SET_CMDLINE(intx, ThreadStackSize, | |
2359 round_to((int)long_ThreadStackSize, K) / K); | |
2360 // -Xoss | |
2361 } else if (match_option(option, "-Xoss", &tail)) { | |
2362 // HotSpot does not have separate native and Java stacks, ignore silently for compatibility | |
2363 // -Xmaxjitcodesize | |
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2364 } else if (match_option(option, "-Xmaxjitcodesize", &tail) || |
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2365 match_option(option, "-XX:ReservedCodeCacheSize=", &tail)) { |
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2366 julong long_ReservedCodeCacheSize = 0; |
0 | 2367 ArgsRange errcode = parse_memory_size(tail, &long_ReservedCodeCacheSize, |
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2368 (size_t)InitialCodeCacheSize); |
0 | 2369 if (errcode != arg_in_range) { |
2370 jio_fprintf(defaultStream::error_stream(), | |
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2371 "Invalid maximum code cache size: %s. Should be greater than InitialCodeCacheSize=%dK\n", |
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2372 option->optionString, InitialCodeCacheSize/K); |
0 | 2373 describe_range_error(errcode); |
2374 return JNI_EINVAL; | |
2375 } | |
2376 FLAG_SET_CMDLINE(uintx, ReservedCodeCacheSize, (uintx)long_ReservedCodeCacheSize); | |
2377 // -green | |
2378 } else if (match_option(option, "-green", &tail)) { | |
2379 jio_fprintf(defaultStream::error_stream(), | |
2380 "Green threads support not available\n"); | |
2381 return JNI_EINVAL; | |
2382 // -native | |
2383 } else if (match_option(option, "-native", &tail)) { | |
2384 // HotSpot always uses native threads, ignore silently for compatibility | |
2385 // -Xsqnopause | |
2386 } else if (match_option(option, "-Xsqnopause", &tail)) { | |
2387 // EVM option, ignore silently for compatibility | |
2388 // -Xrs | |
2389 } else if (match_option(option, "-Xrs", &tail)) { | |
2390 // Classic/EVM option, new functionality | |
2391 FLAG_SET_CMDLINE(bool, ReduceSignalUsage, true); | |
2392 } else if (match_option(option, "-Xusealtsigs", &tail)) { | |
2393 // change default internal VM signals used - lower case for back compat | |
2394 FLAG_SET_CMDLINE(bool, UseAltSigs, true); | |
2395 // -Xoptimize | |
2396 } else if (match_option(option, "-Xoptimize", &tail)) { | |
2397 // EVM option, ignore silently for compatibility | |
2398 // -Xprof | |
2399 } else if (match_option(option, "-Xprof", &tail)) { | |
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2400 #if INCLUDE_FPROF |
0 | 2401 _has_profile = true; |
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2402 #else // INCLUDE_FPROF |
0 | 2403 // do we have to exit? |
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2404 warning("Flat profiling is not supported in this VM."); |
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2405 #endif // INCLUDE_FPROF |
0 | 2406 // -Xaprof |
2407 } else if (match_option(option, "-Xaprof", &tail)) { | |
2408 _has_alloc_profile = true; | |
2409 // -Xconcurrentio | |
2410 } else if (match_option(option, "-Xconcurrentio", &tail)) { | |
2411 FLAG_SET_CMDLINE(bool, UseLWPSynchronization, true); | |
2412 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
2413 FLAG_SET_CMDLINE(intx, DeferThrSuspendLoopCount, 1); | |
2414 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
2415 FLAG_SET_CMDLINE(uintx, NewSizeThreadIncrease, 16 * K); // 20Kb per thread added to new generation | |
2416 | |
2417 // -Xinternalversion | |
2418 } else if (match_option(option, "-Xinternalversion", &tail)) { | |
2419 jio_fprintf(defaultStream::output_stream(), "%s\n", | |
2420 VM_Version::internal_vm_info_string()); | |
2421 vm_exit(0); | |
2422 #ifndef PRODUCT | |
2423 // -Xprintflags | |
2424 } else if (match_option(option, "-Xprintflags", &tail)) { | |
4773 | 2425 CommandLineFlags::printFlags(tty, false); |
0 | 2426 vm_exit(0); |
2427 #endif | |
2428 // -D | |
2429 } else if (match_option(option, "-D", &tail)) { | |
2430 if (!add_property(tail)) { | |
2431 return JNI_ENOMEM; | |
2432 } | |
2433 // Out of the box management support | |
2434 if (match_option(option, "-Dcom.sun.management", &tail)) { | |
2435 FLAG_SET_CMDLINE(bool, ManagementServer, true); | |
2436 } | |
2437 // -Xint | |
2438 } else if (match_option(option, "-Xint", &tail)) { | |
2439 set_mode_flags(_int); | |
2440 // -Xmixed | |
2441 } else if (match_option(option, "-Xmixed", &tail)) { | |
2442 set_mode_flags(_mixed); | |
2443 // -Xcomp | |
2444 } else if (match_option(option, "-Xcomp", &tail)) { | |
2445 // for testing the compiler; turn off all flags that inhibit compilation | |
2446 set_mode_flags(_comp); | |
2447 | |
2448 // -Xshare:dump | |
2449 } else if (match_option(option, "-Xshare:dump", &tail)) { | |
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2450 #if defined(KERNEL) |
0 | 2451 vm_exit_during_initialization( |
2452 "Dumping a shared archive is not supported on the Kernel JVM.", NULL); | |
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2453 #elif !INCLUDE_CDS |
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2454 vm_exit_during_initialization( |
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2455 "Dumping a shared archive is not supported in this VM.", NULL); |
0 | 2456 #else |
2457 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
2458 set_mode_flags(_int); // Prevent compilation, which creates objects | |
2459 #endif | |
2460 // -Xshare:on | |
2461 } else if (match_option(option, "-Xshare:on", &tail)) { | |
2462 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
2463 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, true); | |
2464 // -Xshare:auto | |
2465 } else if (match_option(option, "-Xshare:auto", &tail)) { | |
2466 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
2467 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
2468 // -Xshare:off | |
2469 } else if (match_option(option, "-Xshare:off", &tail)) { | |
2470 FLAG_SET_CMDLINE(bool, UseSharedSpaces, false); | |
2471 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
2472 | |
2473 // -Xverify | |
2474 } else if (match_option(option, "-Xverify", &tail)) { | |
2475 if (strcmp(tail, ":all") == 0 || strcmp(tail, "") == 0) { | |
2476 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, true); | |
2477 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
2478 } else if (strcmp(tail, ":remote") == 0) { | |
2479 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
2480 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
2481 } else if (strcmp(tail, ":none") == 0) { | |
2482 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
2483 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, false); | |
2484 } else if (is_bad_option(option, args->ignoreUnrecognized, "verification")) { | |
2485 return JNI_EINVAL; | |
2486 } | |
2487 // -Xdebug | |
2488 } else if (match_option(option, "-Xdebug", &tail)) { | |
2489 // note this flag has been used, then ignore | |
2490 set_xdebug_mode(true); | |
2491 // -Xnoagent | |
2492 } else if (match_option(option, "-Xnoagent", &tail)) { | |
2493 // For compatibility with classic. HotSpot refuses to load the old style agent.dll. | |
2494 } else if (match_option(option, "-Xboundthreads", &tail)) { | |
2495 // Bind user level threads to kernel threads (Solaris only) | |
2496 FLAG_SET_CMDLINE(bool, UseBoundThreads, true); | |
2497 } else if (match_option(option, "-Xloggc:", &tail)) { | |
2498 // Redirect GC output to the file. -Xloggc:<filename> | |
2499 // ostream_init_log(), when called will use this filename | |
2500 // to initialize a fileStream. | |
2501 _gc_log_filename = strdup(tail); | |
2502 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
2503 FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true); | |
2504 | |
2505 // JNI hooks | |
2506 } else if (match_option(option, "-Xcheck", &tail)) { | |
2507 if (!strcmp(tail, ":jni")) { | |
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2508 #if !INCLUDE_JNI_CHECK |
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2509 warning("JNI CHECKING is not supported in this VM"); |
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2510 #else |
0 | 2511 CheckJNICalls = true; |
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2512 #endif // INCLUDE_JNI_CHECK |
0 | 2513 } else if (is_bad_option(option, args->ignoreUnrecognized, |
2514 "check")) { | |
2515 return JNI_EINVAL; | |
2516 } | |
2517 } else if (match_option(option, "vfprintf", &tail)) { | |
2518 _vfprintf_hook = CAST_TO_FN_PTR(vfprintf_hook_t, option->extraInfo); | |
2519 } else if (match_option(option, "exit", &tail)) { | |
2520 _exit_hook = CAST_TO_FN_PTR(exit_hook_t, option->extraInfo); | |
2521 } else if (match_option(option, "abort", &tail)) { | |
2522 _abort_hook = CAST_TO_FN_PTR(abort_hook_t, option->extraInfo); | |
2523 // -XX:+AggressiveHeap | |
2524 } else if (match_option(option, "-XX:+AggressiveHeap", &tail)) { | |
2525 | |
2526 // This option inspects the machine and attempts to set various | |
2527 // parameters to be optimal for long-running, memory allocation | |
2528 // intensive jobs. It is intended for machines with large | |
2529 // amounts of cpu and memory. | |
2530 | |
2531 // initHeapSize is needed since _initial_heap_size is 4 bytes on a 32 bit | |
2532 // VM, but we may not be able to represent the total physical memory | |
2533 // available (like having 8gb of memory on a box but using a 32bit VM). | |
2534 // Thus, we need to make sure we're using a julong for intermediate | |
2535 // calculations. | |
2536 julong initHeapSize; | |
2537 julong total_memory = os::physical_memory(); | |
2538 | |
2539 if (total_memory < (julong)256*M) { | |
2540 jio_fprintf(defaultStream::error_stream(), | |
2541 "You need at least 256mb of memory to use -XX:+AggressiveHeap\n"); | |
2542 vm_exit(1); | |
2543 } | |
2544 | |
2545 // The heap size is half of available memory, or (at most) | |
2546 // all of possible memory less 160mb (leaving room for the OS | |
2547 // when using ISM). This is the maximum; because adaptive sizing | |
2548 // is turned on below, the actual space used may be smaller. | |
2549 | |
2550 initHeapSize = MIN2(total_memory / (julong)2, | |
2551 total_memory - (julong)160*M); | |
2552 | |
2553 // Make sure that if we have a lot of memory we cap the 32 bit | |
2554 // process space. The 64bit VM version of this function is a nop. | |
2555 initHeapSize = os::allocatable_physical_memory(initHeapSize); | |
2556 | |
2557 if (FLAG_IS_DEFAULT(MaxHeapSize)) { | |
2558 FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize); | |
1064 | 2559 FLAG_SET_CMDLINE(uintx, InitialHeapSize, initHeapSize); |
0 | 2560 // Currently the minimum size and the initial heap sizes are the same. |
1064 | 2561 set_min_heap_size(initHeapSize); |
0 | 2562 } |
2563 if (FLAG_IS_DEFAULT(NewSize)) { | |
2564 // Make the young generation 3/8ths of the total heap. | |
2565 FLAG_SET_CMDLINE(uintx, NewSize, | |
2566 ((julong)MaxHeapSize / (julong)8) * (julong)3); | |
2567 FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize); | |
2568 } | |
2569 | |
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2570 #ifndef _ALLBSD_SOURCE // UseLargePages is not yet supported on BSD. |
0 | 2571 FLAG_SET_DEFAULT(UseLargePages, true); |
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2572 #endif |
0 | 2573 |
2574 // Increase some data structure sizes for efficiency | |
2575 FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize); | |
2576 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
2577 FLAG_SET_CMDLINE(uintx, TLABSize, 256*K); | |
2578 | |
2579 // See the OldPLABSize comment below, but replace 'after promotion' | |
2580 // with 'after copying'. YoungPLABSize is the size of the survivor | |
2581 // space per-gc-thread buffers. The default is 4kw. | |
2582 FLAG_SET_CMDLINE(uintx, YoungPLABSize, 256*K); // Note: this is in words | |
2583 | |
2584 // OldPLABSize is the size of the buffers in the old gen that | |
2585 // UseParallelGC uses to promote live data that doesn't fit in the | |
2586 // survivor spaces. At any given time, there's one for each gc thread. | |
2587 // The default size is 1kw. These buffers are rarely used, since the | |
2588 // survivor spaces are usually big enough. For specjbb, however, there | |
2589 // are occasions when there's lots of live data in the young gen | |
2590 // and we end up promoting some of it. We don't have a definite | |
2591 // explanation for why bumping OldPLABSize helps, but the theory | |
2592 // is that a bigger PLAB results in retaining something like the | |
2593 // original allocation order after promotion, which improves mutator | |
2594 // locality. A minor effect may be that larger PLABs reduce the | |
2595 // number of PLAB allocation events during gc. The value of 8kw | |
2596 // was arrived at by experimenting with specjbb. | |
2597 FLAG_SET_CMDLINE(uintx, OldPLABSize, 8*K); // Note: this is in words | |
2598 | |
2599 // Enable parallel GC and adaptive generation sizing | |
2600 FLAG_SET_CMDLINE(bool, UseParallelGC, true); | |
10
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|
2601 FLAG_SET_DEFAULT(ParallelGCThreads, |
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|
2602 Abstract_VM_Version::parallel_worker_threads()); |
0 | 2603 |
2604 // Encourage steady state memory management | |
2605 FLAG_SET_CMDLINE(uintx, ThresholdTolerance, 100); | |
2606 | |
2607 // This appears to improve mutator locality | |
2608 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
2609 | |
2610 // Get around early Solaris scheduling bug | |
2611 // (affinity vs other jobs on system) | |
2612 // but disallow DR and offlining (5008695). | |
2613 FLAG_SET_CMDLINE(bool, BindGCTaskThreadsToCPUs, true); | |
2614 | |
2615 } else if (match_option(option, "-XX:+NeverTenure", &tail)) { | |
2616 // The last option must always win. | |
2617 FLAG_SET_CMDLINE(bool, AlwaysTenure, false); | |
2618 FLAG_SET_CMDLINE(bool, NeverTenure, true); | |
2619 } else if (match_option(option, "-XX:+AlwaysTenure", &tail)) { | |
2620 // The last option must always win. | |
2621 FLAG_SET_CMDLINE(bool, NeverTenure, false); | |
2622 FLAG_SET_CMDLINE(bool, AlwaysTenure, true); | |
2623 } else if (match_option(option, "-XX:+CMSPermGenSweepingEnabled", &tail) || | |
2624 match_option(option, "-XX:-CMSPermGenSweepingEnabled", &tail)) { | |
2625 jio_fprintf(defaultStream::error_stream(), | |
2626 "Please use CMSClassUnloadingEnabled in place of " | |
2627 "CMSPermGenSweepingEnabled in the future\n"); | |
2628 } else if (match_option(option, "-XX:+UseGCTimeLimit", &tail)) { | |
2629 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, true); | |
2630 jio_fprintf(defaultStream::error_stream(), | |
2631 "Please use -XX:+UseGCOverheadLimit in place of " | |
2632 "-XX:+UseGCTimeLimit in the future\n"); | |
2633 } else if (match_option(option, "-XX:-UseGCTimeLimit", &tail)) { | |
2634 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, false); | |
2635 jio_fprintf(defaultStream::error_stream(), | |
2636 "Please use -XX:-UseGCOverheadLimit in place of " | |
2637 "-XX:-UseGCTimeLimit in the future\n"); | |
2638 // The TLE options are for compatibility with 1.3 and will be | |
2639 // removed without notice in a future release. These options | |
2640 // are not to be documented. | |
2641 } else if (match_option(option, "-XX:MaxTLERatio=", &tail)) { | |
2642 // No longer used. | |
2643 } else if (match_option(option, "-XX:+ResizeTLE", &tail)) { | |
2644 FLAG_SET_CMDLINE(bool, ResizeTLAB, true); | |
2645 } else if (match_option(option, "-XX:-ResizeTLE", &tail)) { | |
2646 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
2647 } else if (match_option(option, "-XX:+PrintTLE", &tail)) { | |
2648 FLAG_SET_CMDLINE(bool, PrintTLAB, true); | |
2649 } else if (match_option(option, "-XX:-PrintTLE", &tail)) { | |
2650 FLAG_SET_CMDLINE(bool, PrintTLAB, false); | |
2651 } else if (match_option(option, "-XX:TLEFragmentationRatio=", &tail)) { | |
2652 // No longer used. | |
2653 } else if (match_option(option, "-XX:TLESize=", &tail)) { | |
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|
2654 julong long_tlab_size = 0; |
0 | 2655 ArgsRange errcode = parse_memory_size(tail, &long_tlab_size, 1); |
2656 if (errcode != arg_in_range) { | |
2657 jio_fprintf(defaultStream::error_stream(), | |
2658 "Invalid TLAB size: %s\n", option->optionString); | |
2659 describe_range_error(errcode); | |
2660 return JNI_EINVAL; | |
2661 } | |
2662 FLAG_SET_CMDLINE(uintx, TLABSize, long_tlab_size); | |
2663 } else if (match_option(option, "-XX:TLEThreadRatio=", &tail)) { | |
2664 // No longer used. | |
2665 } else if (match_option(option, "-XX:+UseTLE", &tail)) { | |
2666 FLAG_SET_CMDLINE(bool, UseTLAB, true); | |
2667 } else if (match_option(option, "-XX:-UseTLE", &tail)) { | |
2668 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
2669 SOLARIS_ONLY( | |
2670 } else if (match_option(option, "-XX:+UsePermISM", &tail)) { | |
2671 warning("-XX:+UsePermISM is obsolete."); | |
2672 FLAG_SET_CMDLINE(bool, UseISM, true); | |
2673 } else if (match_option(option, "-XX:-UsePermISM", &tail)) { | |
2674 FLAG_SET_CMDLINE(bool, UseISM, false); | |
2675 ) | |
2676 } else if (match_option(option, "-XX:+DisplayVMOutputToStderr", &tail)) { | |
2677 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, false); | |
2678 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, true); | |
2679 } else if (match_option(option, "-XX:+DisplayVMOutputToStdout", &tail)) { | |
2680 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, false); | |
2681 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, true); | |
2682 } else if (match_option(option, "-XX:+ExtendedDTraceProbes", &tail)) { | |
4006 | 2683 #if defined(DTRACE_ENABLED) |
0 | 2684 FLAG_SET_CMDLINE(bool, ExtendedDTraceProbes, true); |
2685 FLAG_SET_CMDLINE(bool, DTraceMethodProbes, true); | |
2686 FLAG_SET_CMDLINE(bool, DTraceAllocProbes, true); | |
2687 FLAG_SET_CMDLINE(bool, DTraceMonitorProbes, true); | |
4006 | 2688 #else // defined(DTRACE_ENABLED) |
0 | 2689 jio_fprintf(defaultStream::error_stream(), |
4006 | 2690 "ExtendedDTraceProbes flag is not applicable for this configuration\n"); |
0 | 2691 return JNI_EINVAL; |
4006 | 2692 #endif // defined(DTRACE_ENABLED) |
0 | 2693 #ifdef ASSERT |
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|
2694 } else if (match_option(option, "-XX:+FullGCALot", &tail)) { |
0 | 2695 FLAG_SET_CMDLINE(bool, FullGCALot, true); |
2696 // disable scavenge before parallel mark-compact | |
2697 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
2698 #endif | |
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|
2699 } else if (match_option(option, "-XX:CMSParPromoteBlocksToClaim=", &tail)) { |
0 | 2700 julong cms_blocks_to_claim = (julong)atol(tail); |
2701 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); | |
2702 jio_fprintf(defaultStream::error_stream(), | |
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|
2703 "Please use -XX:OldPLABSize in place of " |
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|
2704 "-XX:CMSParPromoteBlocksToClaim in the future\n"); |
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6631166: CMS: better heuristics when combatting fragmentation
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|
2705 } else if (match_option(option, "-XX:ParCMSPromoteBlocksToClaim=", &tail)) { |
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|
2706 julong cms_blocks_to_claim = (julong)atol(tail); |
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|
2707 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); |
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6631166: CMS: better heuristics when combatting fragmentation
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|
2708 jio_fprintf(defaultStream::error_stream(), |
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6631166: CMS: better heuristics when combatting fragmentation
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|
2709 "Please use -XX:OldPLABSize in place of " |
0 | 2710 "-XX:ParCMSPromoteBlocksToClaim in the future\n"); |
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|
2711 } else if (match_option(option, "-XX:ParallelGCOldGenAllocBufferSize=", &tail)) { |
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|
2712 julong old_plab_size = 0; |
0 | 2713 ArgsRange errcode = parse_memory_size(tail, &old_plab_size, 1); |
2714 if (errcode != arg_in_range) { | |
2715 jio_fprintf(defaultStream::error_stream(), | |
2716 "Invalid old PLAB size: %s\n", option->optionString); | |
2717 describe_range_error(errcode); | |
2718 return JNI_EINVAL; | |
2719 } | |
489
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|
2720 FLAG_SET_CMDLINE(uintx, OldPLABSize, old_plab_size); |
0 | 2721 jio_fprintf(defaultStream::error_stream(), |
2722 "Please use -XX:OldPLABSize in place of " | |
2723 "-XX:ParallelGCOldGenAllocBufferSize in the future\n"); | |
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|
2724 } else if (match_option(option, "-XX:ParallelGCToSpaceAllocBufferSize=", &tail)) { |
489
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|
2725 julong young_plab_size = 0; |
0 | 2726 ArgsRange errcode = parse_memory_size(tail, &young_plab_size, 1); |
2727 if (errcode != arg_in_range) { | |
2728 jio_fprintf(defaultStream::error_stream(), | |
2729 "Invalid young PLAB size: %s\n", option->optionString); | |
2730 describe_range_error(errcode); | |
2731 return JNI_EINVAL; | |
2732 } | |
489
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|
2733 FLAG_SET_CMDLINE(uintx, YoungPLABSize, young_plab_size); |
0 | 2734 jio_fprintf(defaultStream::error_stream(), |
2735 "Please use -XX:YoungPLABSize in place of " | |
2736 "-XX:ParallelGCToSpaceAllocBufferSize in the future\n"); | |
1284 | 2737 } else if (match_option(option, "-XX:CMSMarkStackSize=", &tail) || |
2738 match_option(option, "-XX:G1MarkStackSize=", &tail)) { | |
2739 julong stack_size = 0; | |
2740 ArgsRange errcode = parse_memory_size(tail, &stack_size, 1); | |
2741 if (errcode != arg_in_range) { | |
2742 jio_fprintf(defaultStream::error_stream(), | |
2743 "Invalid mark stack size: %s\n", option->optionString); | |
2744 describe_range_error(errcode); | |
2745 return JNI_EINVAL; | |
2746 } | |
2747 FLAG_SET_CMDLINE(uintx, MarkStackSize, stack_size); | |
2748 } else if (match_option(option, "-XX:CMSMarkStackSizeMax=", &tail)) { | |
2749 julong max_stack_size = 0; | |
2750 ArgsRange errcode = parse_memory_size(tail, &max_stack_size, 1); | |
2751 if (errcode != arg_in_range) { | |
2752 jio_fprintf(defaultStream::error_stream(), | |
2753 "Invalid maximum mark stack size: %s\n", | |
2754 option->optionString); | |
2755 describe_range_error(errcode); | |
2756 return JNI_EINVAL; | |
2757 } | |
2758 FLAG_SET_CMDLINE(uintx, MarkStackSizeMax, max_stack_size); | |
2759 } else if (match_option(option, "-XX:ParallelMarkingThreads=", &tail) || | |
2760 match_option(option, "-XX:ParallelCMSThreads=", &tail)) { | |
2761 uintx conc_threads = 0; | |
2762 if (!parse_uintx(tail, &conc_threads, 1)) { | |
2763 jio_fprintf(defaultStream::error_stream(), | |
2764 "Invalid concurrent threads: %s\n", option->optionString); | |
2765 return JNI_EINVAL; | |
2766 } | |
2767 FLAG_SET_CMDLINE(uintx, ConcGCThreads, conc_threads); | |
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7179383: MaxDirectMemorySize argument parsing is broken for values >2G
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6198
diff
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|
2768 } else if (match_option(option, "-XX:MaxDirectMemorySize=", &tail)) { |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
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|
2769 julong max_direct_memory_size = 0; |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
parents:
6198
diff
changeset
|
2770 ArgsRange errcode = parse_memory_size(tail, &max_direct_memory_size, 0); |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
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6198
diff
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|
2771 if (errcode != arg_in_range) { |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
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6198
diff
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|
2772 jio_fprintf(defaultStream::error_stream(), |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
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diff
changeset
|
2773 "Invalid maximum direct memory size: %s\n", |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
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6198
diff
changeset
|
2774 option->optionString); |
3f1ab0c19c30
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dholmes
parents:
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diff
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|
2775 describe_range_error(errcode); |
3f1ab0c19c30
7179383: MaxDirectMemorySize argument parsing is broken for values >2G
dholmes
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diff
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|
2776 return JNI_EINVAL; |
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diff
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|
2777 } |
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|
2778 FLAG_SET_CMDLINE(uintx, MaxDirectMemorySize, max_direct_memory_size); |
6878
85916677fc22
7188233: UseVMInterruptibleIO flag deprecate for JDK8
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6857
diff
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|
2779 } else if (match_option(option, "-XX:+UseVMInterruptibleIO", &tail)) { |
85916677fc22
7188233: UseVMInterruptibleIO flag deprecate for JDK8
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|
2780 // NOTE! In JDK 9, the UseVMInterruptibleIO flag will completely go |
85916677fc22
7188233: UseVMInterruptibleIO flag deprecate for JDK8
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|
2781 // away and will cause VM initialization failures! |
85916677fc22
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|
2782 warning("-XX:+UseVMInterruptibleIO is obsolete and will be removed in a future release."); |
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|
2783 FLAG_SET_CMDLINE(bool, UseVMInterruptibleIO, true); |
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2784 } else if (match_option(option, "-XX:", &tail)) { // -XX:xxxx |
0 | 2785 // Skip -XX:Flags= since that case has already been handled |
2786 if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) { | |
2787 if (!process_argument(tail, args->ignoreUnrecognized, origin)) { | |
2788 return JNI_EINVAL; | |
2789 } | |
2790 } | |
2791 // Unknown option | |
2792 } else if (is_bad_option(option, args->ignoreUnrecognized)) { | |
2793 return JNI_ERR; | |
2794 } | |
2795 } | |
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|
2796 |
449
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6554406: Change switch UseVMInterruptibleIO default to false (sol)
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|
2797 // Change the default value for flags which have different default values |
171e581e8161
6554406: Change switch UseVMInterruptibleIO default to false (sol)
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|
2798 // when working with older JDKs. |
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|
2799 #ifdef LINUX |
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|
2800 if (JDK_Version::current().compare_major(6) <= 0 && |
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|
2801 FLAG_IS_DEFAULT(UseLinuxPosixThreadCPUClocks)) { |
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|
2802 FLAG_SET_DEFAULT(UseLinuxPosixThreadCPUClocks, false); |
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|
2803 } |
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|
2804 #endif // LINUX |
0 | 2805 return JNI_OK; |
2806 } | |
2807 | |
2808 jint Arguments::finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required) { | |
2809 // This must be done after all -D arguments have been processed. | |
2810 scp_p->expand_endorsed(); | |
2811 | |
2812 if (scp_assembly_required || scp_p->get_endorsed() != NULL) { | |
2813 // Assemble the bootclasspath elements into the final path. | |
2814 Arguments::set_sysclasspath(scp_p->combined_path()); | |
2815 } | |
2816 | |
2817 // This must be done after all arguments have been processed. | |
2818 // java_compiler() true means set to "NONE" or empty. | |
2819 if (java_compiler() && !xdebug_mode()) { | |
2820 // For backwards compatibility, we switch to interpreted mode if | |
2821 // -Djava.compiler="NONE" or "" is specified AND "-Xdebug" was | |
2822 // not specified. | |
2823 set_mode_flags(_int); | |
2824 } | |
2825 if (CompileThreshold == 0) { | |
2826 set_mode_flags(_int); | |
2827 } | |
2828 | |
2829 #ifndef COMPILER2 | |
2830 // Don't degrade server performance for footprint | |
2831 if (FLAG_IS_DEFAULT(UseLargePages) && | |
2832 MaxHeapSize < LargePageHeapSizeThreshold) { | |
2833 // No need for large granularity pages w/small heaps. | |
2834 // Note that large pages are enabled/disabled for both the | |
2835 // Java heap and the code cache. | |
2836 FLAG_SET_DEFAULT(UseLargePages, false); | |
2837 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseMPSS, false)); | |
2838 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseISM, false)); | |
2839 } | |
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|
2840 |
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6923002: assert(false,"this call site should not be polymorphic")
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changeset
|
2841 // Tiered compilation is undefined with C1. |
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1188
diff
changeset
|
2842 TieredCompilation = false; |
0 | 2843 #else |
2844 if (!FLAG_IS_DEFAULT(OptoLoopAlignment) && FLAG_IS_DEFAULT(MaxLoopPad)) { | |
2845 FLAG_SET_DEFAULT(MaxLoopPad, OptoLoopAlignment-1); | |
2846 } | |
2847 #endif | |
2848 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2849 // If we are running in a headless jre, force java.awt.headless property |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2850 // to be true unless the property has already been set. |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2851 // Also allow the OS environment variable JAVA_AWT_HEADLESS to set headless state. |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2852 if (os::is_headless_jre()) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2853 const char* headless = Arguments::get_property("java.awt.headless"); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2854 if (headless == NULL) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2855 char envbuffer[128]; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2856 if (!os::getenv("JAVA_AWT_HEADLESS", envbuffer, sizeof(envbuffer))) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2857 if (!add_property("java.awt.headless=true")) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2858 return JNI_ENOMEM; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2859 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2860 } else { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2861 char buffer[256]; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2862 strcpy(buffer, "java.awt.headless="); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2863 strcat(buffer, envbuffer); |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2864 if (!add_property(buffer)) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2865 return JNI_ENOMEM; |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2866 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2867 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2868 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2869 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2870 |
0 | 2871 if (!check_vm_args_consistency()) { |
2872 return JNI_ERR; | |
2873 } | |
2874 | |
2875 return JNI_OK; | |
2876 } | |
2877 | |
2878 jint Arguments::parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
2879 return parse_options_environment_variable("_JAVA_OPTIONS", scp_p, | |
2880 scp_assembly_required_p); | |
2881 } | |
2882 | |
2883 jint Arguments::parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
2884 return parse_options_environment_variable("JAVA_TOOL_OPTIONS", scp_p, | |
2885 scp_assembly_required_p); | |
2886 } | |
2887 | |
2888 jint Arguments::parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
2889 const int N_MAX_OPTIONS = 64; | |
2890 const int OPTION_BUFFER_SIZE = 1024; | |
2891 char buffer[OPTION_BUFFER_SIZE]; | |
2892 | |
2893 // The variable will be ignored if it exceeds the length of the buffer. | |
2894 // Don't check this variable if user has special privileges | |
2895 // (e.g. unix su command). | |
2896 if (os::getenv(name, buffer, sizeof(buffer)) && | |
2897 !os::have_special_privileges()) { | |
2898 JavaVMOption options[N_MAX_OPTIONS]; // Construct option array | |
2899 jio_fprintf(defaultStream::error_stream(), | |
2900 "Picked up %s: %s\n", name, buffer); | |
2901 char* rd = buffer; // pointer to the input string (rd) | |
2902 int i; | |
2903 for (i = 0; i < N_MAX_OPTIONS;) { // repeat for all options in the input string | |
2904 while (isspace(*rd)) rd++; // skip whitespace | |
2905 if (*rd == 0) break; // we re done when the input string is read completely | |
2906 | |
2907 // The output, option string, overwrites the input string. | |
2908 // Because of quoting, the pointer to the option string (wrt) may lag the pointer to | |
2909 // input string (rd). | |
2910 char* wrt = rd; | |
2911 | |
2912 options[i++].optionString = wrt; // Fill in option | |
2913 while (*rd != 0 && !isspace(*rd)) { // unquoted strings terminate with a space or NULL | |
2914 if (*rd == '\'' || *rd == '"') { // handle a quoted string | |
2915 int quote = *rd; // matching quote to look for | |
2916 rd++; // don't copy open quote | |
2917 while (*rd != quote) { // include everything (even spaces) up until quote | |
2918 if (*rd == 0) { // string termination means unmatched string | |
2919 jio_fprintf(defaultStream::error_stream(), | |
2920 "Unmatched quote in %s\n", name); | |
2921 return JNI_ERR; | |
2922 } | |
2923 *wrt++ = *rd++; // copy to option string | |
2924 } | |
2925 rd++; // don't copy close quote | |
2926 } else { | |
2927 *wrt++ = *rd++; // copy to option string | |
2928 } | |
2929 } | |
2930 // Need to check if we're done before writing a NULL, | |
2931 // because the write could be to the byte that rd is pointing to. | |
2932 if (*rd++ == 0) { | |
2933 *wrt = 0; | |
2934 break; | |
2935 } | |
2936 *wrt = 0; // Zero terminate option | |
2937 } | |
2938 // Construct JavaVMInitArgs structure and parse as if it was part of the command line | |
2939 JavaVMInitArgs vm_args; | |
2940 vm_args.version = JNI_VERSION_1_2; | |
2941 vm_args.options = options; | |
2942 vm_args.nOptions = i; | |
564 | 2943 vm_args.ignoreUnrecognized = IgnoreUnrecognizedVMOptions; |
0 | 2944 |
2945 if (PrintVMOptions) { | |
2946 const char* tail; | |
2947 for (int i = 0; i < vm_args.nOptions; i++) { | |
2948 const JavaVMOption *option = vm_args.options + i; | |
2949 if (match_option(option, "-XX:", &tail)) { | |
2950 logOption(tail); | |
2951 } | |
2952 } | |
2953 } | |
2954 | |
2955 return(parse_each_vm_init_arg(&vm_args, scp_p, scp_assembly_required_p, ENVIRON_VAR)); | |
2956 } | |
2957 return JNI_OK; | |
2958 } | |
2959 | |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2960 void Arguments::set_shared_spaces_flags() { |
2378 | 2961 const bool must_share = DumpSharedSpaces || RequireSharedSpaces; |
2962 const bool might_share = must_share || UseSharedSpaces; | |
2963 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
2964 // CompressedOops cannot be used with CDS. The offsets of oopmaps and |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
2965 // static fields are incorrect in the archive. With some more clever |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
2966 // initialization, this restriction can probably be lifted. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
2967 // ??? UseLargePages might be okay now |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
2968 const bool cannot_share = UseCompressedOops || |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
2969 (UseLargePages && FLAG_IS_CMDLINE(UseLargePages)); |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2970 if (cannot_share) { |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2971 if (must_share) { |
6736
11fb740ce98f
7196103: NPG: Unable to allocate bit map for parallel garbage collection for the requested heap size
coleenp
parents:
6725
diff
changeset
|
2972 warning("disabling large pages %s" |
2378 | 2973 "because of %s", "" LP64_ONLY("and compressed oops "), |
2974 DumpSharedSpaces ? "-Xshare:dump" : "-Xshare:on"); | |
2975 FLAG_SET_CMDLINE(bool, UseLargePages, false); | |
2976 LP64_ONLY(FLAG_SET_CMDLINE(bool, UseCompressedOops, false)); | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
2977 LP64_ONLY(FLAG_SET_CMDLINE(bool, UseCompressedKlassPointers, false)); |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2978 } else { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
2979 // Prefer compressed oops and large pages to class data sharing |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2980 if (UseSharedSpaces && Verbose) { |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
2981 warning("turning off use of shared archive because of large pages%s", |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
2982 "" LP64_ONLY(" and/or compressed oops")); |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2983 } |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2984 no_shared_spaces(); |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2985 } |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2986 } else if (UseLargePages && might_share) { |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2987 // Disable large pages to allow shared spaces. This is sub-optimal, since |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2988 // there may not even be a shared archive to use. |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2989 FLAG_SET_DEFAULT(UseLargePages, false); |
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
2990 } |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
2991 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
2992 // Add 2M to any size for SharedReadOnlySize to get around the JPRT setting |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
2993 if (DumpSharedSpaces && !FLAG_IS_DEFAULT(SharedReadOnlySize)) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
2994 SharedReadOnlySize = 14*M; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
2995 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
2996 |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
2997 if (DumpSharedSpaces) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
2998 if (RequireSharedSpaces) { |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
2999 warning("cannot dump shared archive while using shared archive"); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3000 } |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3001 UseSharedSpaces = false; |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3002 } |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3003 } |
1891
9de67bf4244d
6996136: VM crash in src/share/vm/runtime/virtualspace.cpp:424
iveresov
parents:
1890
diff
changeset
|
3004 |
3797
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3005 // Disable options not supported in this release, with a warning if they |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3006 // were explicitly requested on the command-line |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3007 #define UNSUPPORTED_OPTION(opt, description) \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3008 do { \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3009 if (opt) { \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3010 if (FLAG_IS_CMDLINE(opt)) { \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3011 warning(description " is disabled in this release."); \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3012 } \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3013 FLAG_SET_DEFAULT(opt, false); \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3014 } \ |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3015 } while(0) |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3016 |
0 | 3017 // Parse entry point called from JNI_CreateJavaVM |
3018 | |
3019 jint Arguments::parse(const JavaVMInitArgs* args) { | |
3020 | |
3021 // Sharing support | |
3022 // Construct the path to the archive | |
3023 char jvm_path[JVM_MAXPATHLEN]; | |
3024 os::jvm_path(jvm_path, sizeof(jvm_path)); | |
3025 char *end = strrchr(jvm_path, *os::file_separator()); | |
3026 if (end != NULL) *end = '\0'; | |
3027 char *shared_archive_path = NEW_C_HEAP_ARRAY(char, strlen(jvm_path) + | |
6197 | 3028 strlen(os::file_separator()) + 20, mtInternal); |
0 | 3029 if (shared_archive_path == NULL) return JNI_ENOMEM; |
3030 strcpy(shared_archive_path, jvm_path); | |
3031 strcat(shared_archive_path, os::file_separator()); | |
3032 strcat(shared_archive_path, "classes"); | |
3033 DEBUG_ONLY(strcat(shared_archive_path, "_g");) | |
3034 strcat(shared_archive_path, ".jsa"); | |
3035 SharedArchivePath = shared_archive_path; | |
3036 | |
3037 // Remaining part of option string | |
3038 const char* tail; | |
3039 | |
3040 // If flag "-XX:Flags=flags-file" is used it will be the first option to be processed. | |
6196
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3041 const char* hotspotrc = ".hotspotrc"; |
0 | 3042 bool settings_file_specified = false; |
6196
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3043 bool needs_hotspotrc_warning = false; |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3044 |
564 | 3045 const char* flags_file; |
0 | 3046 int index; |
3047 for (index = 0; index < args->nOptions; index++) { | |
3048 const JavaVMOption *option = args->options + index; | |
3049 if (match_option(option, "-XX:Flags=", &tail)) { | |
564 | 3050 flags_file = tail; |
0 | 3051 settings_file_specified = true; |
3052 } | |
3053 if (match_option(option, "-XX:+PrintVMOptions", &tail)) { | |
3054 PrintVMOptions = true; | |
3055 } | |
253
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
3056 if (match_option(option, "-XX:-PrintVMOptions", &tail)) { |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
3057 PrintVMOptions = false; |
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
3058 } |
564 | 3059 if (match_option(option, "-XX:+IgnoreUnrecognizedVMOptions", &tail)) { |
3060 IgnoreUnrecognizedVMOptions = true; | |
3061 } | |
3062 if (match_option(option, "-XX:-IgnoreUnrecognizedVMOptions", &tail)) { | |
3063 IgnoreUnrecognizedVMOptions = false; | |
3064 } | |
1150 | 3065 if (match_option(option, "-XX:+PrintFlagsInitial", &tail)) { |
4773 | 3066 CommandLineFlags::printFlags(tty, false); |
1150 | 3067 vm_exit(0); |
3068 } | |
6197 | 3069 if (match_option(option, "-XX:NativeMemoryTracking", &tail)) { |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3070 #if INCLUDE_NMT |
6197 | 3071 MemTracker::init_tracking_options(tail); |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3072 #else |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3073 warning("Native Memory Tracking is not supported in this VM"); |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3074 #endif |
6197 | 3075 } |
3076 | |
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3077 |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3078 #ifndef PRODUCT |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3079 if (match_option(option, "-XX:+PrintFlagsWithComments", &tail)) { |
4773 | 3080 CommandLineFlags::printFlags(tty, true); |
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3081 vm_exit(0); |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3082 } |
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
3083 #endif |
564 | 3084 } |
3085 | |
3086 if (IgnoreUnrecognizedVMOptions) { | |
3087 // uncast const to modify the flag args->ignoreUnrecognized | |
3088 *(jboolean*)(&args->ignoreUnrecognized) = true; | |
3089 } | |
3090 | |
3091 // Parse specified settings file | |
3092 if (settings_file_specified) { | |
3093 if (!process_settings_file(flags_file, true, args->ignoreUnrecognized)) { | |
3094 return JNI_EINVAL; | |
3095 } | |
6196
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3096 } else { |
6150
1e76463170b3
7110720: Issue with vm config file loadingIssue with vm config file loading
kamg
parents:
4780
diff
changeset
|
3097 #ifdef ASSERT |
6196
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3098 // Parse default .hotspotrc settings file |
0 | 3099 if (!process_settings_file(".hotspotrc", false, args->ignoreUnrecognized)) { |
3100 return JNI_EINVAL; | |
3101 } | |
6196
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3102 #else |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3103 struct stat buf; |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3104 if (os::stat(hotspotrc, &buf) == 0) { |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3105 needs_hotspotrc_warning = true; |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3106 } |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3107 #endif |
0 | 3108 } |
3109 | |
3110 if (PrintVMOptions) { | |
3111 for (index = 0; index < args->nOptions; index++) { | |
3112 const JavaVMOption *option = args->options + index; | |
3113 if (match_option(option, "-XX:", &tail)) { | |
3114 logOption(tail); | |
3115 } | |
3116 } | |
3117 } | |
3118 | |
3119 // Parse JavaVMInitArgs structure passed in, as well as JAVA_TOOL_OPTIONS and _JAVA_OPTIONS | |
3120 jint result = parse_vm_init_args(args); | |
3121 if (result != JNI_OK) { | |
3122 return result; | |
3123 } | |
3124 | |
6196
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3125 // Delay warning until here so that we've had a chance to process |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3126 // the -XX:-PrintWarnings flag |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3127 if (needs_hotspotrc_warning) { |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3128 warning("%s file is present but has been ignored. " |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3129 "Run with -XX:Flags=%s to load the file.", |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3130 hotspotrc, hotspotrc); |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3131 } |
3759236eea14
7167142: Consider a warning when finding a .hotspotrc or .hotspot_compiler file that isn't used
kamg
parents:
6158
diff
changeset
|
3132 |
6055
35e504cb49a6
7167625: Adjustments for SE-Embedded build process
collins
parents:
6017
diff
changeset
|
3133 #if (defined JAVASE_EMBEDDED || defined ARM) |
3797
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3134 UNSUPPORTED_OPTION(UseG1GC, "G1 GC"); |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3135 #endif |
eb94b7226b7a
7061192: option handling adjustments for oracle and embedded builds
jcoomes
parents:
3769
diff
changeset
|
3136 |
6917
e81fbc04a942
7191817: -XX:+UseSerialGC -XX:+UseLargePages crashes with SIGFPE on MacOS X
coleenp
parents:
6916
diff
changeset
|
3137 #ifdef _ALLBSD_SOURCE // UseLargePages is not yet supported on BSD. |
e81fbc04a942
7191817: -XX:+UseSerialGC -XX:+UseLargePages crashes with SIGFPE on MacOS X
coleenp
parents:
6916
diff
changeset
|
3138 UNSUPPORTED_OPTION(UseLargePages, "-XX:+UseLargePages"); |
e81fbc04a942
7191817: -XX:+UseSerialGC -XX:+UseLargePages crashes with SIGFPE on MacOS X
coleenp
parents:
6916
diff
changeset
|
3139 #endif |
e81fbc04a942
7191817: -XX:+UseSerialGC -XX:+UseLargePages crashes with SIGFPE on MacOS X
coleenp
parents:
6916
diff
changeset
|
3140 |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3141 #if !INCLUDE_ALTERNATE_GCS |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3142 if (UseParallelGC) { |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3143 warning("Parallel GC is not supported in this VM. Using Serial GC."); |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3144 } |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3145 if (UseParallelOldGC) { |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3146 warning("Parallel Old GC is not supported in this VM. Using Serial GC."); |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3147 } |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3148 if (UseConcMarkSweepGC) { |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3149 warning("Concurrent Mark Sweep GC is not supported in this VM. Using Serial GC."); |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3150 } |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3151 if (UseParNewGC) { |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3152 warning("Par New GC is not supported in this VM. Using Serial GC."); |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3153 } |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3154 #endif // INCLUDE_ALTERNATE_GCS |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3155 |
0 | 3156 #ifndef PRODUCT |
3157 if (TraceBytecodesAt != 0) { | |
3158 TraceBytecodes = true; | |
3159 } | |
3160 if (CountCompiledCalls) { | |
3161 if (UseCounterDecay) { | |
3162 warning("UseCounterDecay disabled because CountCalls is set"); | |
3163 UseCounterDecay = false; | |
3164 } | |
3165 } | |
3166 #endif // PRODUCT | |
3167 | |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3168 // JSR 292 is not supported before 1.7 |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3169 if (!JDK_Version::is_gte_jdk17x_version()) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3170 if (EnableInvokeDynamic) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3171 if (!FLAG_IS_DEFAULT(EnableInvokeDynamic)) { |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3172 warning("JSR 292 is not supported before 1.7. Disabling support."); |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3173 } |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3174 EnableInvokeDynamic = false; |
710 | 3175 } |
3176 } | |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3177 |
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3178 if (EnableInvokeDynamic && ScavengeRootsInCode == 0) { |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3179 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
2416
38fea01eb669
6817525: turn on method handle functionality by default for JSR 292
twisti
parents:
2378
diff
changeset
|
3180 warning("forcing ScavengeRootsInCode non-zero because EnableInvokeDynamic is true"); |
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3181 } |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3182 ScavengeRootsInCode = 1; |
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
3183 } |
710 | 3184 |
0 | 3185 if (PrintGCDetails) { |
3186 // Turn on -verbose:gc options as well | |
3187 PrintGC = true; | |
3188 } | |
3189 | |
6064
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3190 if (!JDK_Version::is_gte_jdk18x_version()) { |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3191 // To avoid changing the log format for 7 updates this flag is only |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3192 // true by default in JDK8 and above. |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3193 if (FLAG_IS_DEFAULT(PrintGCCause)) { |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3194 FLAG_SET_DEFAULT(PrintGCCause, false); |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3195 } |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3196 } |
9d679effd28c
7166894: Add gc cause to GC logging for all collectors
brutisso
parents:
6017
diff
changeset
|
3197 |
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
3198 // Set object alignment values. |
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
3199 set_object_alignment(); |
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
3200 |
0 | 3201 #ifdef SERIALGC |
1064 | 3202 force_serial_gc(); |
0 | 3203 #endif // SERIALGC |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3204 #if !INCLUDE_CDS |
0 | 3205 no_shared_spaces(); |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3206 #endif // INCLUDE_CDS |
0 | 3207 |
3208 // Set flags based on ergonomics. | |
3209 set_ergonomics_flags(); | |
3210 | |
2362
a2c2eac1ca62
7018056: large pages not always enabled by default
jcoomes
parents:
2302
diff
changeset
|
3211 set_shared_spaces_flags(); |
1135
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3212 |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3213 // Check the GC selections again. |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3214 if (!check_gc_consistency()) { |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3215 return JNI_EINVAL; |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3216 } |
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3217 |
1783 | 3218 if (TieredCompilation) { |
3219 set_tiered_flags(); | |
3220 } else { | |
3221 // Check if the policy is valid. Policies 0 and 1 are valid for non-tiered setup. | |
3222 if (CompilationPolicyChoice >= 2) { | |
3223 vm_exit_during_initialization( | |
3224 "Incompatible compilation policy selected", NULL); | |
3225 } | |
3226 } | |
3227 | |
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3228 // Set heap size based on available physical memory |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3229 set_heap_size(); |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3230 |
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3231 #if INCLUDE_ALTERNATE_GCS |
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3232 // Set per-collector flags |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3233 if (UseParallelGC || UseParallelOldGC) { |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3234 set_parallel_gc_flags(); |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3235 } else if (UseConcMarkSweepGC) { // should be done before ParNew check below |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3236 set_cms_and_parnew_gc_flags(); |
2368
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3237 } else if (UseParNewGC) { // skipped if CMS is set above |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3238 set_parnew_gc_flags(); |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3239 } else if (UseG1GC) { |
dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
ysr
parents:
2366
diff
changeset
|
3240 set_g1_gc_flags(); |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
3241 } |
6854
fb19af007ffc
7189254: Change makefiles for more flexibility to override defaults
jprovino
parents:
6818
diff
changeset
|
3242 #endif // INCLUDE_ALTERNATE_GCS |
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3243 |
0 | 3244 #ifdef SERIALGC |
3245 assert(verify_serial_gc_flags(), "SerialGC unset"); | |
3246 #endif // SERIALGC | |
3247 | |
3248 // Set bytecode rewriting flags | |
3249 set_bytecode_flags(); | |
3250 | |
3251 // Set flags if Aggressive optimization flags (-XX:+AggressiveOpts) enabled. | |
3252 set_aggressive_opts_flags(); | |
3253 | |
2239
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3254 // Turn off biased locking for locking debug mode flags, |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3255 // which are subtlely different from each other but neither works with |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3256 // biased locking. |
2331 | 3257 if (UseHeavyMonitors |
3258 #ifdef COMPILER1 | |
3259 || !UseFastLocking | |
3260 #endif // COMPILER1 | |
3261 ) { | |
2239
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3262 if (!FLAG_IS_DEFAULT(UseBiasedLocking) && UseBiasedLocking) { |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3263 // flag set to true on command line; warn the user that they |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3264 // can't enable biased locking here |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3265 warning("Biased Locking is not supported with locking debug flags" |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3266 "; ignoring UseBiasedLocking flag." ); |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3267 } |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3268 UseBiasedLocking = false; |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3269 } |
c08677f98289
6840152: JVM crashes when heavyweight monitors are used
coleenp
parents:
2176
diff
changeset
|
3270 |
0 | 3271 #ifdef CC_INTERP |
1131 | 3272 // Clear flags not supported by the C++ interpreter |
3273 FLAG_SET_DEFAULT(ProfileInterpreter, false); | |
0 | 3274 FLAG_SET_DEFAULT(UseBiasedLocking, false); |
1131 | 3275 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedOops, false)); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6628
diff
changeset
|
3276 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedKlassPointers, false)); |
1131 | 3277 #endif // CC_INTERP |
3278 | |
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3279 #ifdef COMPILER2 |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3280 if (!UseBiasedLocking || EmitSync != 0) { |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3281 UseOptoBiasInlining = false; |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3282 } |
4777 | 3283 if (!EliminateLocks) { |
3284 EliminateNestedLocks = false; | |
3285 } | |
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3286 #endif |
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3287 |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3288 if (PrintAssembly && FLAG_IS_DEFAULT(DebugNonSafepoints)) { |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
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diff
changeset
|
3289 warning("PrintAssembly is enabled; turning on DebugNonSafepoints to gain additional output"); |
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6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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diff
changeset
|
3290 DebugNonSafepoints = true; |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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diff
changeset
|
3291 } |
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6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3292 |
1188
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
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diff
changeset
|
3293 #ifndef PRODUCT |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3294 if (CompileTheWorld) { |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3295 // Force NmethodSweeper to sweep whole CodeCache each time. |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3296 if (FLAG_IS_DEFAULT(NmethodSweepFraction)) { |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3297 NmethodSweepFraction = 1; |
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3298 } |
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6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3299 } |
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6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
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diff
changeset
|
3300 #endif |
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6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
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1161
diff
changeset
|
3301 |
0 | 3302 if (PrintCommandLineFlags) { |
4773 | 3303 CommandLineFlags::printSetFlags(tty); |
0 | 3304 } |
3305 | |
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3306 // Apply CPU specific policy for the BiasedLocking |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3307 if (UseBiasedLocking) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3308 if (!VM_Version::use_biased_locking() && |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
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diff
changeset
|
3309 !(FLAG_IS_CMDLINE(UseBiasedLocking))) { |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
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diff
changeset
|
3310 UseBiasedLocking = false; |
126ea7725993
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bobv
parents:
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diff
changeset
|
3311 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
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diff
changeset
|
3312 } |
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
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diff
changeset
|
3313 |
2302
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3314 // set PauseAtExit if the gamma launcher was used and a debugger is attached |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
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diff
changeset
|
3315 // but only if not already set on the commandline |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
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parents:
2243
diff
changeset
|
3316 if (Arguments::created_by_gamma_launcher() && os::is_debugger_attached()) { |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
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parents:
2243
diff
changeset
|
3317 bool set = false; |
da091bb67459
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parents:
2243
diff
changeset
|
3318 CommandLineFlags::wasSetOnCmdline("PauseAtExit", &set); |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
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parents:
2243
diff
changeset
|
3319 if (!set) { |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3320 FLAG_SET_DEFAULT(PauseAtExit, true); |
da091bb67459
7022037: Pause when exiting if debugger is attached on windows
sla
parents:
2243
diff
changeset
|
3321 } |
da091bb67459
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parents:
2243
diff
changeset
|
3322 } |
da091bb67459
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2243
diff
changeset
|
3323 |
0 | 3324 return JNI_OK; |
3325 } | |
3326 | |
7177
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3327 jint Arguments::adjust_after_os() { |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
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diff
changeset
|
3328 #if INCLUDE_ALTERNATE_GCS |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
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6982
diff
changeset
|
3329 if (UseParallelGC || UseParallelOldGC) { |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3330 if (UseNUMA) { |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3331 if (FLAG_IS_DEFAULT(MinHeapDeltaBytes)) { |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3332 FLAG_SET_DEFAULT(MinHeapDeltaBytes, 64*M); |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3333 } |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3334 // For those collectors or operating systems (eg, Windows) that do |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3335 // not support full UseNUMA, we will map to UseNUMAInterleaving for now |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3336 UseNUMAInterleaving = true; |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3337 } |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
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parents:
6982
diff
changeset
|
3338 } |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
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6982
diff
changeset
|
3339 #endif |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3340 return JNI_OK; |
53715fb1597d
7198334: UseNUMA modifies system parameters on non-NUMA system
brutisso
parents:
6982
diff
changeset
|
3341 } |
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diff
changeset
|
3342 |
0 | 3343 int Arguments::PropertyList_count(SystemProperty* pl) { |
3344 int count = 0; | |
3345 while(pl != NULL) { | |
3346 count++; | |
3347 pl = pl->next(); | |
3348 } | |
3349 return count; | |
3350 } | |
3351 | |
3352 const char* Arguments::PropertyList_get_value(SystemProperty *pl, const char* key) { | |
3353 assert(key != NULL, "just checking"); | |
3354 SystemProperty* prop; | |
3355 for (prop = pl; prop != NULL; prop = prop->next()) { | |
3356 if (strcmp(key, prop->key()) == 0) return prop->value(); | |
3357 } | |
3358 return NULL; | |
3359 } | |
3360 | |
3361 const char* Arguments::PropertyList_get_key_at(SystemProperty *pl, int index) { | |
3362 int count = 0; | |
3363 const char* ret_val = NULL; | |
3364 | |
3365 while(pl != NULL) { | |
3366 if(count >= index) { | |
3367 ret_val = pl->key(); | |
3368 break; | |
3369 } | |
3370 count++; | |
3371 pl = pl->next(); | |
3372 } | |
3373 | |
3374 return ret_val; | |
3375 } | |
3376 | |
3377 char* Arguments::PropertyList_get_value_at(SystemProperty* pl, int index) { | |
3378 int count = 0; | |
3379 char* ret_val = NULL; | |
3380 | |
3381 while(pl != NULL) { | |
3382 if(count >= index) { | |
3383 ret_val = pl->value(); | |
3384 break; | |
3385 } | |
3386 count++; | |
3387 pl = pl->next(); | |
3388 } | |
3389 | |
3390 return ret_val; | |
3391 } | |
3392 | |
3393 void Arguments::PropertyList_add(SystemProperty** plist, SystemProperty *new_p) { | |
3394 SystemProperty* p = *plist; | |
3395 if (p == NULL) { | |
3396 *plist = new_p; | |
3397 } else { | |
3398 while (p->next() != NULL) { | |
3399 p = p->next(); | |
3400 } | |
3401 p->set_next(new_p); | |
3402 } | |
3403 } | |
3404 | |
3405 void Arguments::PropertyList_add(SystemProperty** plist, const char* k, char* v) { | |
3406 if (plist == NULL) | |
3407 return; | |
3408 | |
3409 SystemProperty* new_p = new SystemProperty(k, v, true); | |
3410 PropertyList_add(plist, new_p); | |
3411 } | |
3412 | |
3413 // This add maintains unique property key in the list. | |
691 | 3414 void Arguments::PropertyList_unique_add(SystemProperty** plist, const char* k, char* v, jboolean append) { |
0 | 3415 if (plist == NULL) |
3416 return; | |
3417 | |
3418 // If property key exist then update with new value. | |
3419 SystemProperty* prop; | |
3420 for (prop = *plist; prop != NULL; prop = prop->next()) { | |
3421 if (strcmp(k, prop->key()) == 0) { | |
691 | 3422 if (append) { |
3423 prop->append_value(v); | |
3424 } else { | |
3425 prop->set_value(v); | |
3426 } | |
0 | 3427 return; |
3428 } | |
3429 } | |
3430 | |
3431 PropertyList_add(plist, k, v); | |
3432 } | |
3433 | |
3434 #ifdef KERNEL | |
3435 char *Arguments::get_kernel_properties() { | |
3436 // Find properties starting with kernel and append them to string | |
3437 // We need to find out how long they are first because the URL's that they | |
3438 // might point to could get long. | |
3439 int length = 0; | |
3440 SystemProperty* prop; | |
3441 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
3442 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
3443 length += (strlen(prop->key()) + strlen(prop->value()) + 5); // "-D =" | |
3444 } | |
3445 } | |
3446 // Add one for null terminator. | |
6197 | 3447 char *props = AllocateHeap(length + 1, mtInternal); |
0 | 3448 if (length != 0) { |
3449 int pos = 0; | |
3450 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
3451 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
3452 jio_snprintf(&props[pos], length-pos, | |
3453 "-D%s=%s ", prop->key(), prop->value()); | |
3454 pos = strlen(props); | |
3455 } | |
3456 } | |
3457 } | |
3458 // null terminate props in case of null | |
3459 props[length] = '\0'; | |
3460 return props; | |
3461 } | |
3462 #endif // KERNEL | |
3463 | |
3464 // Copies src into buf, replacing "%%" with "%" and "%p" with pid | |
3465 // Returns true if all of the source pointed by src has been copied over to | |
3466 // the destination buffer pointed by buf. Otherwise, returns false. | |
3467 // Notes: | |
3468 // 1. If the length (buflen) of the destination buffer excluding the | |
3469 // NULL terminator character is not long enough for holding the expanded | |
3470 // pid characters, it also returns false instead of returning the partially | |
3471 // expanded one. | |
3472 // 2. The passed in "buflen" should be large enough to hold the null terminator. | |
3473 bool Arguments::copy_expand_pid(const char* src, size_t srclen, | |
3474 char* buf, size_t buflen) { | |
3475 const char* p = src; | |
3476 char* b = buf; | |
3477 const char* src_end = &src[srclen]; | |
3478 char* buf_end = &buf[buflen - 1]; | |
3479 | |
3480 while (p < src_end && b < buf_end) { | |
3481 if (*p == '%') { | |
3482 switch (*(++p)) { | |
3483 case '%': // "%%" ==> "%" | |
3484 *b++ = *p++; | |
3485 break; | |
3486 case 'p': { // "%p" ==> current process id | |
3487 // buf_end points to the character before the last character so | |
3488 // that we could write '\0' to the end of the buffer. | |
3489 size_t buf_sz = buf_end - b + 1; | |
3490 int ret = jio_snprintf(b, buf_sz, "%d", os::current_process_id()); | |
3491 | |
3492 // if jio_snprintf fails or the buffer is not long enough to hold | |
3493 // the expanded pid, returns false. | |
3494 if (ret < 0 || ret >= (int)buf_sz) { | |
3495 return false; | |
3496 } else { | |
3497 b += ret; | |
3498 assert(*b == '\0', "fail in copy_expand_pid"); | |
3499 if (p == src_end && b == buf_end + 1) { | |
3500 // reach the end of the buffer. | |
3501 return true; | |
3502 } | |
3503 } | |
3504 p++; | |
3505 break; | |
3506 } | |
3507 default : | |
3508 *b++ = '%'; | |
3509 } | |
3510 } else { | |
3511 *b++ = *p++; | |
3512 } | |
3513 } | |
3514 *b = '\0'; | |
3515 return (p == src_end); // return false if not all of the source was copied | |
3516 } |