Mercurial > hg > truffle
annotate src/share/vm/runtime/arguments.cpp @ 1956:35f885165c69
6981737: The java.vm.specification.version property is 1.0, seems like it should be 2.0
Summary: Change property value to 1.<major_version> for major_version >= 7
Reviewed-by: dholmes, acorn
| author | kamg |
|---|---|
| date | Fri, 05 Nov 2010 09:32:08 -0400 |
| parents | 4e22405d98d6 |
| children | 9752a6549f2e |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2010, 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 | |
| 25 #include "incls/_precompiled.incl" | |
| 26 #include "incls/_arguments.cpp.incl" | |
| 27 | |
| 28 #define DEFAULT_VENDOR_URL_BUG "http://java.sun.com/webapps/bugreport/crash.jsp" | |
| 29 #define DEFAULT_JAVA_LAUNCHER "generic" | |
| 30 | |
| 31 char** Arguments::_jvm_flags_array = NULL; | |
| 32 int Arguments::_num_jvm_flags = 0; | |
| 33 char** Arguments::_jvm_args_array = NULL; | |
| 34 int Arguments::_num_jvm_args = 0; | |
| 35 char* Arguments::_java_command = NULL; | |
| 36 SystemProperty* Arguments::_system_properties = NULL; | |
| 37 const char* Arguments::_gc_log_filename = NULL; | |
| 38 bool Arguments::_has_profile = false; | |
| 39 bool Arguments::_has_alloc_profile = false; | |
| 40 uintx Arguments::_min_heap_size = 0; | |
| 41 Arguments::Mode Arguments::_mode = _mixed; | |
| 42 bool Arguments::_java_compiler = false; | |
| 43 bool Arguments::_xdebug_mode = false; | |
| 44 const char* Arguments::_java_vendor_url_bug = DEFAULT_VENDOR_URL_BUG; | |
| 45 const char* Arguments::_sun_java_launcher = DEFAULT_JAVA_LAUNCHER; | |
| 46 int Arguments::_sun_java_launcher_pid = -1; | |
| 47 | |
| 48 // These parameters are reset in method parse_vm_init_args(JavaVMInitArgs*) | |
| 49 bool Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
| 50 bool Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
| 51 bool Arguments::_BackgroundCompilation = BackgroundCompilation; | |
| 52 bool Arguments::_ClipInlining = ClipInlining; | |
| 53 | |
| 54 char* Arguments::SharedArchivePath = NULL; | |
| 55 | |
| 56 AgentLibraryList Arguments::_libraryList; | |
| 57 AgentLibraryList Arguments::_agentList; | |
| 58 | |
| 59 abort_hook_t Arguments::_abort_hook = NULL; | |
| 60 exit_hook_t Arguments::_exit_hook = NULL; | |
| 61 vfprintf_hook_t Arguments::_vfprintf_hook = NULL; | |
| 62 | |
| 63 | |
| 64 SystemProperty *Arguments::_java_ext_dirs = NULL; | |
| 65 SystemProperty *Arguments::_java_endorsed_dirs = NULL; | |
| 66 SystemProperty *Arguments::_sun_boot_library_path = NULL; | |
| 67 SystemProperty *Arguments::_java_library_path = NULL; | |
| 68 SystemProperty *Arguments::_java_home = NULL; | |
| 69 SystemProperty *Arguments::_java_class_path = NULL; | |
| 70 SystemProperty *Arguments::_sun_boot_class_path = NULL; | |
| 71 | |
| 72 char* Arguments::_meta_index_path = NULL; | |
| 73 char* Arguments::_meta_index_dir = NULL; | |
| 74 | |
| 75 static bool force_client_mode = false; | |
| 76 | |
| 77 // Check if head of 'option' matches 'name', and sets 'tail' remaining part of option string | |
| 78 | |
| 79 static bool match_option(const JavaVMOption *option, const char* name, | |
| 80 const char** tail) { | |
| 81 int len = (int)strlen(name); | |
| 82 if (strncmp(option->optionString, name, len) == 0) { | |
| 83 *tail = option->optionString + len; | |
| 84 return true; | |
| 85 } else { | |
| 86 return false; | |
| 87 } | |
| 88 } | |
| 89 | |
| 90 static void logOption(const char* opt) { | |
| 91 if (PrintVMOptions) { | |
| 92 jio_fprintf(defaultStream::output_stream(), "VM option '%s'\n", opt); | |
| 93 } | |
| 94 } | |
| 95 | |
| 96 // Process java launcher properties. | |
| 97 void Arguments::process_sun_java_launcher_properties(JavaVMInitArgs* args) { | |
| 98 // See if sun.java.launcher or sun.java.launcher.pid is defined. | |
| 99 // Must do this before setting up other system properties, | |
| 100 // as some of them may depend on launcher type. | |
| 101 for (int index = 0; index < args->nOptions; index++) { | |
| 102 const JavaVMOption* option = args->options + index; | |
| 103 const char* tail; | |
| 104 | |
| 105 if (match_option(option, "-Dsun.java.launcher=", &tail)) { | |
| 106 process_java_launcher_argument(tail, option->extraInfo); | |
| 107 continue; | |
| 108 } | |
| 109 if (match_option(option, "-Dsun.java.launcher.pid=", &tail)) { | |
| 110 _sun_java_launcher_pid = atoi(tail); | |
| 111 continue; | |
| 112 } | |
| 113 } | |
| 114 } | |
| 115 | |
| 116 // Initialize system properties key and value. | |
| 117 void Arguments::init_system_properties() { | |
| 118 | |
| 119 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.name", | |
| 120 "Java Virtual Machine Specification", false)); | |
| 121 PropertyList_add(&_system_properties, new SystemProperty("java.vm.version", VM_Version::vm_release(), false)); | |
| 122 PropertyList_add(&_system_properties, new SystemProperty("java.vm.name", VM_Version::vm_name(), false)); | |
| 123 PropertyList_add(&_system_properties, new SystemProperty("java.vm.info", VM_Version::vm_info_string(), true)); | |
| 124 | |
| 125 // following are JVMTI agent writeable properties. | |
| 126 // Properties values are set to NULL and they are | |
| 127 // os specific they are initialized in os::init_system_properties_values(). | |
| 128 _java_ext_dirs = new SystemProperty("java.ext.dirs", NULL, true); | |
| 129 _java_endorsed_dirs = new SystemProperty("java.endorsed.dirs", NULL, true); | |
| 130 _sun_boot_library_path = new SystemProperty("sun.boot.library.path", NULL, true); | |
| 131 _java_library_path = new SystemProperty("java.library.path", NULL, true); | |
| 132 _java_home = new SystemProperty("java.home", NULL, true); | |
| 133 _sun_boot_class_path = new SystemProperty("sun.boot.class.path", NULL, true); | |
| 134 | |
| 135 _java_class_path = new SystemProperty("java.class.path", "", true); | |
| 136 | |
| 137 // Add to System Property list. | |
| 138 PropertyList_add(&_system_properties, _java_ext_dirs); | |
| 139 PropertyList_add(&_system_properties, _java_endorsed_dirs); | |
| 140 PropertyList_add(&_system_properties, _sun_boot_library_path); | |
| 141 PropertyList_add(&_system_properties, _java_library_path); | |
| 142 PropertyList_add(&_system_properties, _java_home); | |
| 143 PropertyList_add(&_system_properties, _java_class_path); | |
| 144 PropertyList_add(&_system_properties, _sun_boot_class_path); | |
| 145 | |
| 146 // Set OS specific system properties values | |
| 147 os::init_system_properties_values(); | |
| 148 } | |
| 149 | |
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150 |
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151 // Update/Initialize System properties after JDK version number is known |
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152 void Arguments::init_version_specific_system_properties() { |
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153 enum { bufsz = 16 }; |
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154 char buffer[bufsz]; |
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155 const char* spec_vendor = "Sun Microsystems Inc."; |
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156 uint32_t spec_version = 0; |
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157 |
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158 if (JDK_Version::is_gte_jdk17x_version()) { |
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159 spec_vendor = "Oracle Corporation"; |
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160 spec_version = JDK_Version::current().major_version(); |
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161 } |
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162 jio_snprintf(buffer, bufsz, "1." UINT32_FORMAT, spec_version); |
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163 |
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164 PropertyList_add(&_system_properties, |
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165 new SystemProperty("java.vm.specification.vendor", spec_vendor, false)); |
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166 PropertyList_add(&_system_properties, |
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167 new SystemProperty("java.vm.specification.version", buffer, false)); |
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168 PropertyList_add(&_system_properties, |
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169 new SystemProperty("java.vm.vendor", VM_Version::vm_vendor(), false)); |
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170 } |
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171 |
| 242 | 172 /** |
| 173 * Provide a slightly more user-friendly way of eliminating -XX flags. | |
| 174 * When a flag is eliminated, it can be added to this list in order to | |
| 175 * continue accepting this flag on the command-line, while issuing a warning | |
| 176 * and ignoring the value. Once the JDK version reaches the 'accept_until' | |
| 177 * limit, we flatly refuse to admit the existence of the flag. This allows | |
| 178 * a flag to die correctly over JDK releases using HSX. | |
| 179 */ | |
| 180 typedef struct { | |
| 181 const char* name; | |
| 182 JDK_Version obsoleted_in; // when the flag went away | |
| 183 JDK_Version accept_until; // which version to start denying the existence | |
| 184 } ObsoleteFlag; | |
| 0 | 185 |
| 242 | 186 static ObsoleteFlag obsolete_jvm_flags[] = { |
| 187 { "UseTrainGC", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 188 { "UseSpecialLargeObjectHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 189 { "UseOversizedCarHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 190 { "TraceCarAllocation", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 191 { "PrintTrainGCProcessingStats", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 192 { "LogOfCarSpaceSize", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 193 { "OversizedCarThreshold", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 194 { "MinTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 195 { "DefaultTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 196 { "MaxTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 197 { "DelayTickAdjustment", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 198 { "ProcessingToTenuringRatio", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 199 { "MinTrainLength", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 200 { "AppendRatio", JDK_Version::jdk_update(6,10), JDK_Version::jdk(7) }, | |
| 1064 | 201 { "DefaultMaxRAM", JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, |
| 202 { "DefaultInitialRAMFraction", | |
| 203 JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) }, | |
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204 { "UseDepthFirstScavengeOrder", |
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205 JDK_Version::jdk_update(6,22), JDK_Version::jdk(7) }, |
| 242 | 206 { NULL, JDK_Version(0), JDK_Version(0) } |
| 207 }; | |
| 208 | |
| 209 // Returns true if the flag is obsolete and fits into the range specified | |
| 210 // for being ignored. In the case that the flag is ignored, the 'version' | |
| 211 // value is filled in with the version number when the flag became | |
| 212 // obsolete so that that value can be displayed to the user. | |
| 213 bool Arguments::is_newly_obsolete(const char *s, JDK_Version* version) { | |
| 0 | 214 int i = 0; |
| 242 | 215 assert(version != NULL, "Must provide a version buffer"); |
| 216 while (obsolete_jvm_flags[i].name != NULL) { | |
| 217 const ObsoleteFlag& flag_status = obsolete_jvm_flags[i]; | |
| 0 | 218 // <flag>=xxx form |
| 219 // [-|+]<flag> form | |
| 242 | 220 if ((strncmp(flag_status.name, s, strlen(flag_status.name)) == 0) || |
| 0 | 221 ((s[0] == '+' || s[0] == '-') && |
| 242 | 222 (strncmp(flag_status.name, &s[1], strlen(flag_status.name)) == 0))) { |
| 223 if (JDK_Version::current().compare(flag_status.accept_until) == -1) { | |
| 224 *version = flag_status.obsoleted_in; | |
| 225 return true; | |
| 226 } | |
| 0 | 227 } |
| 228 i++; | |
| 229 } | |
| 230 return false; | |
| 231 } | |
| 232 | |
| 233 // Constructs the system class path (aka boot class path) from the following | |
| 234 // components, in order: | |
| 235 // | |
| 236 // prefix // from -Xbootclasspath/p:... | |
| 237 // endorsed // the expansion of -Djava.endorsed.dirs=... | |
| 238 // base // from os::get_system_properties() or -Xbootclasspath= | |
| 239 // suffix // from -Xbootclasspath/a:... | |
| 240 // | |
| 241 // java.endorsed.dirs is a list of directories; any jar or zip files in the | |
| 242 // directories are added to the sysclasspath just before the base. | |
| 243 // | |
| 244 // This could be AllStatic, but it isn't needed after argument processing is | |
| 245 // complete. | |
| 246 class SysClassPath: public StackObj { | |
| 247 public: | |
| 248 SysClassPath(const char* base); | |
| 249 ~SysClassPath(); | |
| 250 | |
| 251 inline void set_base(const char* base); | |
| 252 inline void add_prefix(const char* prefix); | |
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253 inline void add_suffix_to_prefix(const char* suffix); |
| 0 | 254 inline void add_suffix(const char* suffix); |
| 255 inline void reset_path(const char* base); | |
| 256 | |
| 257 // Expand the jar/zip files in each directory listed by the java.endorsed.dirs | |
| 258 // property. Must be called after all command-line arguments have been | |
| 259 // processed (in particular, -Djava.endorsed.dirs=...) and before calling | |
| 260 // combined_path(). | |
| 261 void expand_endorsed(); | |
| 262 | |
| 263 inline const char* get_base() const { return _items[_scp_base]; } | |
| 264 inline const char* get_prefix() const { return _items[_scp_prefix]; } | |
| 265 inline const char* get_suffix() const { return _items[_scp_suffix]; } | |
| 266 inline const char* get_endorsed() const { return _items[_scp_endorsed]; } | |
| 267 | |
| 268 // Combine all the components into a single c-heap-allocated string; caller | |
| 269 // must free the string if/when no longer needed. | |
| 270 char* combined_path(); | |
| 271 | |
| 272 private: | |
| 273 // Utility routines. | |
| 274 static char* add_to_path(const char* path, const char* str, bool prepend); | |
| 275 static char* add_jars_to_path(char* path, const char* directory); | |
| 276 | |
| 277 inline void reset_item_at(int index); | |
| 278 | |
| 279 // Array indices for the items that make up the sysclasspath. All except the | |
| 280 // base are allocated in the C heap and freed by this class. | |
| 281 enum { | |
| 282 _scp_prefix, // from -Xbootclasspath/p:... | |
| 283 _scp_endorsed, // the expansion of -Djava.endorsed.dirs=... | |
| 284 _scp_base, // the default sysclasspath | |
| 285 _scp_suffix, // from -Xbootclasspath/a:... | |
| 286 _scp_nitems // the number of items, must be last. | |
| 287 }; | |
| 288 | |
| 289 const char* _items[_scp_nitems]; | |
| 290 DEBUG_ONLY(bool _expansion_done;) | |
| 291 }; | |
| 292 | |
| 293 SysClassPath::SysClassPath(const char* base) { | |
| 294 memset(_items, 0, sizeof(_items)); | |
| 295 _items[_scp_base] = base; | |
| 296 DEBUG_ONLY(_expansion_done = false;) | |
| 297 } | |
| 298 | |
| 299 SysClassPath::~SysClassPath() { | |
| 300 // Free everything except the base. | |
| 301 for (int i = 0; i < _scp_nitems; ++i) { | |
| 302 if (i != _scp_base) reset_item_at(i); | |
| 303 } | |
| 304 DEBUG_ONLY(_expansion_done = false;) | |
| 305 } | |
| 306 | |
| 307 inline void SysClassPath::set_base(const char* base) { | |
| 308 _items[_scp_base] = base; | |
| 309 } | |
| 310 | |
| 311 inline void SysClassPath::add_prefix(const char* prefix) { | |
| 312 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], prefix, true); | |
| 313 } | |
| 314 | |
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315 inline void SysClassPath::add_suffix_to_prefix(const char* suffix) { |
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316 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], suffix, false); |
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317 } |
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318 |
| 0 | 319 inline void SysClassPath::add_suffix(const char* suffix) { |
| 320 _items[_scp_suffix] = add_to_path(_items[_scp_suffix], suffix, false); | |
| 321 } | |
| 322 | |
| 323 inline void SysClassPath::reset_item_at(int index) { | |
| 324 assert(index < _scp_nitems && index != _scp_base, "just checking"); | |
| 325 if (_items[index] != NULL) { | |
| 326 FREE_C_HEAP_ARRAY(char, _items[index]); | |
| 327 _items[index] = NULL; | |
| 328 } | |
| 329 } | |
| 330 | |
| 331 inline void SysClassPath::reset_path(const char* base) { | |
| 332 // Clear the prefix and suffix. | |
| 333 reset_item_at(_scp_prefix); | |
| 334 reset_item_at(_scp_suffix); | |
| 335 set_base(base); | |
| 336 } | |
| 337 | |
| 338 //------------------------------------------------------------------------------ | |
| 339 | |
| 340 void SysClassPath::expand_endorsed() { | |
| 341 assert(_items[_scp_endorsed] == NULL, "can only be called once."); | |
| 342 | |
| 343 const char* path = Arguments::get_property("java.endorsed.dirs"); | |
| 344 if (path == NULL) { | |
| 345 path = Arguments::get_endorsed_dir(); | |
| 346 assert(path != NULL, "no default for java.endorsed.dirs"); | |
| 347 } | |
| 348 | |
| 349 char* expanded_path = NULL; | |
| 350 const char separator = *os::path_separator(); | |
| 351 const char* const end = path + strlen(path); | |
| 352 while (path < end) { | |
| 353 const char* tmp_end = strchr(path, separator); | |
| 354 if (tmp_end == NULL) { | |
| 355 expanded_path = add_jars_to_path(expanded_path, path); | |
| 356 path = end; | |
| 357 } else { | |
| 358 char* dirpath = NEW_C_HEAP_ARRAY(char, tmp_end - path + 1); | |
| 359 memcpy(dirpath, path, tmp_end - path); | |
| 360 dirpath[tmp_end - path] = '\0'; | |
| 361 expanded_path = add_jars_to_path(expanded_path, dirpath); | |
| 362 FREE_C_HEAP_ARRAY(char, dirpath); | |
| 363 path = tmp_end + 1; | |
| 364 } | |
| 365 } | |
| 366 _items[_scp_endorsed] = expanded_path; | |
| 367 DEBUG_ONLY(_expansion_done = true;) | |
| 368 } | |
| 369 | |
| 370 // Combine the bootclasspath elements, some of which may be null, into a single | |
| 371 // c-heap-allocated string. | |
| 372 char* SysClassPath::combined_path() { | |
| 373 assert(_items[_scp_base] != NULL, "empty default sysclasspath"); | |
| 374 assert(_expansion_done, "must call expand_endorsed() first."); | |
| 375 | |
| 376 size_t lengths[_scp_nitems]; | |
| 377 size_t total_len = 0; | |
| 378 | |
| 379 const char separator = *os::path_separator(); | |
| 380 | |
| 381 // Get the lengths. | |
| 382 int i; | |
| 383 for (i = 0; i < _scp_nitems; ++i) { | |
| 384 if (_items[i] != NULL) { | |
| 385 lengths[i] = strlen(_items[i]); | |
| 386 // Include space for the separator char (or a NULL for the last item). | |
| 387 total_len += lengths[i] + 1; | |
| 388 } | |
| 389 } | |
| 390 assert(total_len > 0, "empty sysclasspath not allowed"); | |
| 391 | |
| 392 // Copy the _items to a single string. | |
| 393 char* cp = NEW_C_HEAP_ARRAY(char, total_len); | |
| 394 char* cp_tmp = cp; | |
| 395 for (i = 0; i < _scp_nitems; ++i) { | |
| 396 if (_items[i] != NULL) { | |
| 397 memcpy(cp_tmp, _items[i], lengths[i]); | |
| 398 cp_tmp += lengths[i]; | |
| 399 *cp_tmp++ = separator; | |
| 400 } | |
| 401 } | |
| 402 *--cp_tmp = '\0'; // Replace the extra separator. | |
| 403 return cp; | |
| 404 } | |
| 405 | |
| 406 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
| 407 char* | |
| 408 SysClassPath::add_to_path(const char* path, const char* str, bool prepend) { | |
| 409 char *cp; | |
| 410 | |
| 411 assert(str != NULL, "just checking"); | |
| 412 if (path == NULL) { | |
| 413 size_t len = strlen(str) + 1; | |
| 414 cp = NEW_C_HEAP_ARRAY(char, len); | |
| 415 memcpy(cp, str, len); // copy the trailing null | |
| 416 } else { | |
| 417 const char separator = *os::path_separator(); | |
| 418 size_t old_len = strlen(path); | |
| 419 size_t str_len = strlen(str); | |
| 420 size_t len = old_len + str_len + 2; | |
| 421 | |
| 422 if (prepend) { | |
| 423 cp = NEW_C_HEAP_ARRAY(char, len); | |
| 424 char* cp_tmp = cp; | |
| 425 memcpy(cp_tmp, str, str_len); | |
| 426 cp_tmp += str_len; | |
| 427 *cp_tmp = separator; | |
| 428 memcpy(++cp_tmp, path, old_len + 1); // copy the trailing null | |
| 429 FREE_C_HEAP_ARRAY(char, path); | |
| 430 } else { | |
| 431 cp = REALLOC_C_HEAP_ARRAY(char, path, len); | |
| 432 char* cp_tmp = cp + old_len; | |
| 433 *cp_tmp = separator; | |
| 434 memcpy(++cp_tmp, str, str_len + 1); // copy the trailing null | |
| 435 } | |
| 436 } | |
| 437 return cp; | |
| 438 } | |
| 439 | |
| 440 // Scan the directory and append any jar or zip files found to path. | |
| 441 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
| 442 char* SysClassPath::add_jars_to_path(char* path, const char* directory) { | |
| 443 DIR* dir = os::opendir(directory); | |
| 444 if (dir == NULL) return path; | |
| 445 | |
| 446 char dir_sep[2] = { '\0', '\0' }; | |
| 447 size_t directory_len = strlen(directory); | |
| 448 const char fileSep = *os::file_separator(); | |
| 449 if (directory[directory_len - 1] != fileSep) dir_sep[0] = fileSep; | |
| 450 | |
| 451 /* Scan the directory for jars/zips, appending them to path. */ | |
| 452 struct dirent *entry; | |
| 453 char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(directory)); | |
| 454 while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL) { | |
| 455 const char* name = entry->d_name; | |
| 456 const char* ext = name + strlen(name) - 4; | |
| 457 bool isJarOrZip = ext > name && | |
| 458 (os::file_name_strcmp(ext, ".jar") == 0 || | |
| 459 os::file_name_strcmp(ext, ".zip") == 0); | |
| 460 if (isJarOrZip) { | |
| 461 char* jarpath = NEW_C_HEAP_ARRAY(char, directory_len + 2 + strlen(name)); | |
| 462 sprintf(jarpath, "%s%s%s", directory, dir_sep, name); | |
| 463 path = add_to_path(path, jarpath, false); | |
| 464 FREE_C_HEAP_ARRAY(char, jarpath); | |
| 465 } | |
| 466 } | |
| 467 FREE_C_HEAP_ARRAY(char, dbuf); | |
| 468 os::closedir(dir); | |
| 469 return path; | |
| 470 } | |
| 471 | |
| 472 // Parses a memory size specification string. | |
|
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473 static bool atomull(const char *s, julong* result) { |
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474 julong n = 0; |
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475 int args_read = sscanf(s, os::julong_format_specifier(), &n); |
| 0 | 476 if (args_read != 1) { |
| 477 return false; | |
| 478 } | |
| 479 while (*s != '\0' && isdigit(*s)) { | |
| 480 s++; | |
| 481 } | |
| 482 // 4705540: illegal if more characters are found after the first non-digit | |
| 483 if (strlen(s) > 1) { | |
| 484 return false; | |
| 485 } | |
| 486 switch (*s) { | |
| 487 case 'T': case 't': | |
| 488 *result = n * G * K; | |
|
489
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489 // Check for overflow. |
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490 if (*result/((julong)G * K) != n) return false; |
| 0 | 491 return true; |
| 492 case 'G': case 'g': | |
| 493 *result = n * G; | |
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494 if (*result/G != n) return false; |
| 0 | 495 return true; |
| 496 case 'M': case 'm': | |
| 497 *result = n * M; | |
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498 if (*result/M != n) return false; |
| 0 | 499 return true; |
| 500 case 'K': case 'k': | |
| 501 *result = n * K; | |
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502 if (*result/K != n) return false; |
| 0 | 503 return true; |
| 504 case '\0': | |
| 505 *result = n; | |
| 506 return true; | |
| 507 default: | |
| 508 return false; | |
| 509 } | |
| 510 } | |
| 511 | |
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512 Arguments::ArgsRange Arguments::check_memory_size(julong size, julong min_size) { |
| 0 | 513 if (size < min_size) return arg_too_small; |
| 514 // Check that size will fit in a size_t (only relevant on 32-bit) | |
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515 if (size > max_uintx) return arg_too_big; |
| 0 | 516 return arg_in_range; |
| 517 } | |
| 518 | |
| 519 // Describe an argument out of range error | |
| 520 void Arguments::describe_range_error(ArgsRange errcode) { | |
| 521 switch(errcode) { | |
| 522 case arg_too_big: | |
| 523 jio_fprintf(defaultStream::error_stream(), | |
| 524 "The specified size exceeds the maximum " | |
| 525 "representable size.\n"); | |
| 526 break; | |
| 527 case arg_too_small: | |
| 528 case arg_unreadable: | |
| 529 case arg_in_range: | |
| 530 // do nothing for now | |
| 531 break; | |
| 532 default: | |
| 533 ShouldNotReachHere(); | |
| 534 } | |
| 535 } | |
| 536 | |
| 537 static bool set_bool_flag(char* name, bool value, FlagValueOrigin origin) { | |
| 538 return CommandLineFlags::boolAtPut(name, &value, origin); | |
| 539 } | |
| 540 | |
| 541 static bool set_fp_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
| 542 double v; | |
| 543 if (sscanf(value, "%lf", &v) != 1) { | |
| 544 return false; | |
| 545 } | |
| 546 | |
| 547 if (CommandLineFlags::doubleAtPut(name, &v, origin)) { | |
| 548 return true; | |
| 549 } | |
| 550 return false; | |
| 551 } | |
| 552 | |
| 553 static bool set_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
|
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554 julong v; |
| 0 | 555 intx intx_v; |
| 556 bool is_neg = false; | |
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557 // Check the sign first since atomull() parses only unsigned values. |
| 0 | 558 if (*value == '-') { |
| 559 if (!CommandLineFlags::intxAt(name, &intx_v)) { | |
| 560 return false; | |
| 561 } | |
| 562 value++; | |
| 563 is_neg = true; | |
| 564 } | |
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565 if (!atomull(value, &v)) { |
| 0 | 566 return false; |
| 567 } | |
| 568 intx_v = (intx) v; | |
| 569 if (is_neg) { | |
| 570 intx_v = -intx_v; | |
| 571 } | |
| 572 if (CommandLineFlags::intxAtPut(name, &intx_v, origin)) { | |
| 573 return true; | |
| 574 } | |
| 575 uintx uintx_v = (uintx) v; | |
| 576 if (!is_neg && CommandLineFlags::uintxAtPut(name, &uintx_v, origin)) { | |
| 577 return true; | |
| 578 } | |
| 1064 | 579 uint64_t uint64_t_v = (uint64_t) v; |
| 580 if (!is_neg && CommandLineFlags::uint64_tAtPut(name, &uint64_t_v, origin)) { | |
| 581 return true; | |
| 582 } | |
| 0 | 583 return false; |
| 584 } | |
| 585 | |
| 586 static bool set_string_flag(char* name, const char* value, FlagValueOrigin origin) { | |
| 587 if (!CommandLineFlags::ccstrAtPut(name, &value, origin)) return false; | |
| 588 // Contract: CommandLineFlags always returns a pointer that needs freeing. | |
| 589 FREE_C_HEAP_ARRAY(char, value); | |
| 590 return true; | |
| 591 } | |
| 592 | |
| 593 static bool append_to_string_flag(char* name, const char* new_value, FlagValueOrigin origin) { | |
| 594 const char* old_value = ""; | |
| 595 if (!CommandLineFlags::ccstrAt(name, &old_value)) return false; | |
| 596 size_t old_len = old_value != NULL ? strlen(old_value) : 0; | |
| 597 size_t new_len = strlen(new_value); | |
| 598 const char* value; | |
| 599 char* free_this_too = NULL; | |
| 600 if (old_len == 0) { | |
| 601 value = new_value; | |
| 602 } else if (new_len == 0) { | |
| 603 value = old_value; | |
| 604 } else { | |
| 605 char* buf = NEW_C_HEAP_ARRAY(char, old_len + 1 + new_len + 1); | |
| 606 // each new setting adds another LINE to the switch: | |
| 607 sprintf(buf, "%s\n%s", old_value, new_value); | |
| 608 value = buf; | |
| 609 free_this_too = buf; | |
| 610 } | |
| 611 (void) CommandLineFlags::ccstrAtPut(name, &value, origin); | |
| 612 // CommandLineFlags always returns a pointer that needs freeing. | |
| 613 FREE_C_HEAP_ARRAY(char, value); | |
| 614 if (free_this_too != NULL) { | |
| 615 // CommandLineFlags made its own copy, so I must delete my own temp. buffer. | |
| 616 FREE_C_HEAP_ARRAY(char, free_this_too); | |
| 617 } | |
| 618 return true; | |
| 619 } | |
| 620 | |
| 621 bool Arguments::parse_argument(const char* arg, FlagValueOrigin origin) { | |
| 622 | |
| 623 // range of acceptable characters spelled out for portability reasons | |
| 624 #define NAME_RANGE "[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]" | |
| 625 #define BUFLEN 255 | |
| 626 char name[BUFLEN+1]; | |
| 627 char dummy; | |
| 628 | |
| 629 if (sscanf(arg, "-%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
| 630 return set_bool_flag(name, false, origin); | |
| 631 } | |
| 632 if (sscanf(arg, "+%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
| 633 return set_bool_flag(name, true, origin); | |
| 634 } | |
| 635 | |
| 636 char punct; | |
| 637 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "%c", name, &punct) == 2 && punct == '=') { | |
| 638 const char* value = strchr(arg, '=') + 1; | |
| 639 Flag* flag = Flag::find_flag(name, strlen(name)); | |
| 640 if (flag != NULL && flag->is_ccstr()) { | |
| 641 if (flag->ccstr_accumulates()) { | |
| 642 return append_to_string_flag(name, value, origin); | |
| 643 } else { | |
| 644 if (value[0] == '\0') { | |
| 645 value = NULL; | |
| 646 } | |
| 647 return set_string_flag(name, value, origin); | |
| 648 } | |
| 649 } | |
| 650 } | |
| 651 | |
| 652 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE ":%c", name, &punct) == 2 && punct == '=') { | |
| 653 const char* value = strchr(arg, '=') + 1; | |
| 654 // -XX:Foo:=xxx will reset the string flag to the given value. | |
| 655 if (value[0] == '\0') { | |
| 656 value = NULL; | |
| 657 } | |
| 658 return set_string_flag(name, value, origin); | |
| 659 } | |
| 660 | |
| 661 #define SIGNED_FP_NUMBER_RANGE "[-0123456789.]" | |
| 662 #define SIGNED_NUMBER_RANGE "[-0123456789]" | |
| 663 #define NUMBER_RANGE "[0123456789]" | |
| 664 char value[BUFLEN + 1]; | |
| 665 char value2[BUFLEN + 1]; | |
| 666 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_NUMBER_RANGE "." "%" XSTR(BUFLEN) NUMBER_RANGE "%c", name, value, value2, &dummy) == 3) { | |
| 667 // Looks like a floating-point number -- try again with more lenient format string | |
| 668 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_FP_NUMBER_RANGE "%c", name, value, &dummy) == 2) { | |
| 669 return set_fp_numeric_flag(name, value, origin); | |
| 670 } | |
| 671 } | |
| 672 | |
| 673 #define VALUE_RANGE "[-kmgtKMGT0123456789]" | |
| 674 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) VALUE_RANGE "%c", name, value, &dummy) == 2) { | |
| 675 return set_numeric_flag(name, value, origin); | |
| 676 } | |
| 677 | |
| 678 return false; | |
| 679 } | |
| 680 | |
| 681 void Arguments::add_string(char*** bldarray, int* count, const char* arg) { | |
| 682 assert(bldarray != NULL, "illegal argument"); | |
| 683 | |
| 684 if (arg == NULL) { | |
| 685 return; | |
| 686 } | |
| 687 | |
| 688 int index = *count; | |
| 689 | |
| 690 // expand the array and add arg to the last element | |
| 691 (*count)++; | |
| 692 if (*bldarray == NULL) { | |
| 693 *bldarray = NEW_C_HEAP_ARRAY(char*, *count); | |
| 694 } else { | |
| 695 *bldarray = REALLOC_C_HEAP_ARRAY(char*, *bldarray, *count); | |
| 696 } | |
| 697 (*bldarray)[index] = strdup(arg); | |
| 698 } | |
| 699 | |
| 700 void Arguments::build_jvm_args(const char* arg) { | |
| 701 add_string(&_jvm_args_array, &_num_jvm_args, arg); | |
| 702 } | |
| 703 | |
| 704 void Arguments::build_jvm_flags(const char* arg) { | |
| 705 add_string(&_jvm_flags_array, &_num_jvm_flags, arg); | |
| 706 } | |
| 707 | |
| 708 // utility function to return a string that concatenates all | |
| 709 // strings in a given char** array | |
| 710 const char* Arguments::build_resource_string(char** args, int count) { | |
| 711 if (args == NULL || count == 0) { | |
| 712 return NULL; | |
| 713 } | |
| 714 size_t length = strlen(args[0]) + 1; // add 1 for the null terminator | |
| 715 for (int i = 1; i < count; i++) { | |
| 716 length += strlen(args[i]) + 1; // add 1 for a space | |
| 717 } | |
| 718 char* s = NEW_RESOURCE_ARRAY(char, length); | |
| 719 strcpy(s, args[0]); | |
| 720 for (int j = 1; j < count; j++) { | |
| 721 strcat(s, " "); | |
| 722 strcat(s, args[j]); | |
| 723 } | |
| 724 return (const char*) s; | |
| 725 } | |
| 726 | |
| 727 void Arguments::print_on(outputStream* st) { | |
| 728 st->print_cr("VM Arguments:"); | |
| 729 if (num_jvm_flags() > 0) { | |
| 730 st->print("jvm_flags: "); print_jvm_flags_on(st); | |
| 731 } | |
| 732 if (num_jvm_args() > 0) { | |
| 733 st->print("jvm_args: "); print_jvm_args_on(st); | |
| 734 } | |
| 735 st->print_cr("java_command: %s", java_command() ? java_command() : "<unknown>"); | |
| 736 st->print_cr("Launcher Type: %s", _sun_java_launcher); | |
| 737 } | |
| 738 | |
| 739 void Arguments::print_jvm_flags_on(outputStream* st) { | |
| 740 if (_num_jvm_flags > 0) { | |
| 741 for (int i=0; i < _num_jvm_flags; i++) { | |
| 742 st->print("%s ", _jvm_flags_array[i]); | |
| 743 } | |
| 744 st->print_cr(""); | |
| 745 } | |
| 746 } | |
| 747 | |
| 748 void Arguments::print_jvm_args_on(outputStream* st) { | |
| 749 if (_num_jvm_args > 0) { | |
| 750 for (int i=0; i < _num_jvm_args; i++) { | |
| 751 st->print("%s ", _jvm_args_array[i]); | |
| 752 } | |
| 753 st->print_cr(""); | |
| 754 } | |
| 755 } | |
| 756 | |
| 242 | 757 bool Arguments::process_argument(const char* arg, |
| 758 jboolean ignore_unrecognized, FlagValueOrigin origin) { | |
| 759 | |
| 760 JDK_Version since = JDK_Version(); | |
| 0 | 761 |
| 762 if (parse_argument(arg, origin)) { | |
| 763 // do nothing | |
| 242 | 764 } else if (is_newly_obsolete(arg, &since)) { |
| 765 enum { bufsize = 256 }; | |
| 766 char buffer[bufsize]; | |
| 767 since.to_string(buffer, bufsize); | |
| 0 | 768 jio_fprintf(defaultStream::error_stream(), |
| 242 | 769 "Warning: The flag %s has been EOL'd as of %s and will" |
| 770 " be ignored\n", arg, buffer); | |
| 0 | 771 } else { |
| 772 if (!ignore_unrecognized) { | |
| 773 jio_fprintf(defaultStream::error_stream(), | |
| 774 "Unrecognized VM option '%s'\n", arg); | |
| 775 // allow for commandline "commenting out" options like -XX:#+Verbose | |
| 776 if (strlen(arg) == 0 || arg[0] != '#') { | |
| 777 return false; | |
| 778 } | |
| 779 } | |
| 780 } | |
| 781 return true; | |
| 782 } | |
| 783 | |
| 784 bool Arguments::process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized) { | |
| 785 FILE* stream = fopen(file_name, "rb"); | |
| 786 if (stream == NULL) { | |
| 787 if (should_exist) { | |
| 788 jio_fprintf(defaultStream::error_stream(), | |
| 789 "Could not open settings file %s\n", file_name); | |
| 790 return false; | |
| 791 } else { | |
| 792 return true; | |
| 793 } | |
| 794 } | |
| 795 | |
| 796 char token[1024]; | |
| 797 int pos = 0; | |
| 798 | |
| 799 bool in_white_space = true; | |
| 800 bool in_comment = false; | |
| 801 bool in_quote = false; | |
| 802 char quote_c = 0; | |
| 803 bool result = true; | |
| 804 | |
| 805 int c = getc(stream); | |
| 806 while(c != EOF) { | |
| 807 if (in_white_space) { | |
| 808 if (in_comment) { | |
| 809 if (c == '\n') in_comment = false; | |
| 810 } else { | |
| 811 if (c == '#') in_comment = true; | |
| 812 else if (!isspace(c)) { | |
| 813 in_white_space = false; | |
| 814 token[pos++] = c; | |
| 815 } | |
| 816 } | |
| 817 } else { | |
| 818 if (c == '\n' || (!in_quote && isspace(c))) { | |
| 819 // token ends at newline, or at unquoted whitespace | |
| 820 // this allows a way to include spaces in string-valued options | |
| 821 token[pos] = '\0'; | |
| 822 logOption(token); | |
| 823 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
| 824 build_jvm_flags(token); | |
| 825 pos = 0; | |
| 826 in_white_space = true; | |
| 827 in_quote = false; | |
| 828 } else if (!in_quote && (c == '\'' || c == '"')) { | |
| 829 in_quote = true; | |
| 830 quote_c = c; | |
| 831 } else if (in_quote && (c == quote_c)) { | |
| 832 in_quote = false; | |
| 833 } else { | |
| 834 token[pos++] = c; | |
| 835 } | |
| 836 } | |
| 837 c = getc(stream); | |
| 838 } | |
| 839 if (pos > 0) { | |
| 840 token[pos] = '\0'; | |
| 841 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
| 842 build_jvm_flags(token); | |
| 843 } | |
| 844 fclose(stream); | |
| 845 return result; | |
| 846 } | |
| 847 | |
| 848 //============================================================================================================= | |
| 849 // Parsing of properties (-D) | |
| 850 | |
| 851 const char* Arguments::get_property(const char* key) { | |
| 852 return PropertyList_get_value(system_properties(), key); | |
| 853 } | |
| 854 | |
| 855 bool Arguments::add_property(const char* prop) { | |
| 856 const char* eq = strchr(prop, '='); | |
| 857 char* key; | |
| 858 // ns must be static--its address may be stored in a SystemProperty object. | |
| 859 const static char ns[1] = {0}; | |
| 860 char* value = (char *)ns; | |
| 861 | |
| 862 size_t key_len = (eq == NULL) ? strlen(prop) : (eq - prop); | |
| 863 key = AllocateHeap(key_len + 1, "add_property"); | |
| 864 strncpy(key, prop, key_len); | |
| 865 key[key_len] = '\0'; | |
| 866 | |
| 867 if (eq != NULL) { | |
| 868 size_t value_len = strlen(prop) - key_len - 1; | |
| 869 value = AllocateHeap(value_len + 1, "add_property"); | |
| 870 strncpy(value, &prop[key_len + 1], value_len + 1); | |
| 871 } | |
| 872 | |
| 873 if (strcmp(key, "java.compiler") == 0) { | |
| 874 process_java_compiler_argument(value); | |
| 875 FreeHeap(key); | |
| 876 if (eq != NULL) { | |
| 877 FreeHeap(value); | |
| 878 } | |
| 879 return true; | |
| 691 | 880 } else if (strcmp(key, "sun.java.command") == 0) { |
| 0 | 881 _java_command = value; |
| 882 | |
| 883 // don't add this property to the properties exposed to the java application | |
| 884 FreeHeap(key); | |
| 885 return true; | |
| 691 | 886 } else if (strcmp(key, "sun.java.launcher.pid") == 0) { |
| 0 | 887 // launcher.pid property is private and is processed |
| 888 // in process_sun_java_launcher_properties(); | |
| 889 // the sun.java.launcher property is passed on to the java application | |
| 890 FreeHeap(key); | |
| 891 if (eq != NULL) { | |
| 892 FreeHeap(value); | |
| 893 } | |
| 894 return true; | |
| 691 | 895 } else if (strcmp(key, "java.vendor.url.bug") == 0) { |
| 0 | 896 // save it in _java_vendor_url_bug, so JVM fatal error handler can access |
| 897 // its value without going through the property list or making a Java call. | |
| 898 _java_vendor_url_bug = value; | |
| 691 | 899 } else if (strcmp(key, "sun.boot.library.path") == 0) { |
| 900 PropertyList_unique_add(&_system_properties, key, value, true); | |
| 901 return true; | |
| 0 | 902 } |
| 903 // Create new property and add at the end of the list | |
| 904 PropertyList_unique_add(&_system_properties, key, value); | |
| 905 return true; | |
| 906 } | |
| 907 | |
| 908 //=========================================================================================================== | |
| 909 // Setting int/mixed/comp mode flags | |
| 910 | |
| 911 void Arguments::set_mode_flags(Mode mode) { | |
| 912 // Set up default values for all flags. | |
| 913 // If you add a flag to any of the branches below, | |
| 914 // add a default value for it here. | |
| 915 set_java_compiler(false); | |
| 916 _mode = mode; | |
| 917 | |
| 918 // Ensure Agent_OnLoad has the correct initial values. | |
| 919 // This may not be the final mode; mode may change later in onload phase. | |
| 920 PropertyList_unique_add(&_system_properties, "java.vm.info", | |
| 691 | 921 (char*)Abstract_VM_Version::vm_info_string(), false); |
| 0 | 922 |
| 923 UseInterpreter = true; | |
| 924 UseCompiler = true; | |
| 925 UseLoopCounter = true; | |
| 926 | |
| 927 // Default values may be platform/compiler dependent - | |
| 928 // use the saved values | |
| 929 ClipInlining = Arguments::_ClipInlining; | |
| 930 AlwaysCompileLoopMethods = Arguments::_AlwaysCompileLoopMethods; | |
| 931 UseOnStackReplacement = Arguments::_UseOnStackReplacement; | |
| 932 BackgroundCompilation = Arguments::_BackgroundCompilation; | |
| 933 | |
| 934 // Change from defaults based on mode | |
| 935 switch (mode) { | |
| 936 default: | |
| 937 ShouldNotReachHere(); | |
| 938 break; | |
| 939 case _int: | |
| 940 UseCompiler = false; | |
| 941 UseLoopCounter = false; | |
| 942 AlwaysCompileLoopMethods = false; | |
| 943 UseOnStackReplacement = false; | |
| 944 break; | |
| 945 case _mixed: | |
| 946 // same as default | |
| 947 break; | |
| 948 case _comp: | |
| 949 UseInterpreter = false; | |
| 950 BackgroundCompilation = false; | |
| 951 ClipInlining = false; | |
| 952 break; | |
| 953 } | |
| 954 } | |
| 955 | |
| 956 // Conflict: required to use shared spaces (-Xshare:on), but | |
| 957 // incompatible command line options were chosen. | |
| 958 | |
| 959 static void no_shared_spaces() { | |
| 960 if (RequireSharedSpaces) { | |
| 961 jio_fprintf(defaultStream::error_stream(), | |
| 962 "Class data sharing is inconsistent with other specified options.\n"); | |
| 963 vm_exit_during_initialization("Unable to use shared archive.", NULL); | |
| 964 } else { | |
| 965 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
| 966 } | |
| 967 } | |
| 968 | |
| 1783 | 969 void Arguments::set_tiered_flags() { |
| 970 if (FLAG_IS_DEFAULT(CompilationPolicyChoice)) { | |
| 971 FLAG_SET_DEFAULT(CompilationPolicyChoice, 2); | |
| 972 } | |
| 973 | |
| 974 if (CompilationPolicyChoice < 2) { | |
| 975 vm_exit_during_initialization( | |
| 976 "Incompatible compilation policy selected", NULL); | |
| 977 } | |
| 978 | |
| 979 #ifdef _LP64 | |
| 980 if (FLAG_IS_DEFAULT(UseCompressedOops) || FLAG_IS_ERGO(UseCompressedOops)) { | |
| 981 UseCompressedOops = false; | |
| 982 } | |
| 983 if (UseCompressedOops) { | |
| 984 vm_exit_during_initialization( | |
| 985 "Tiered compilation is not supported with compressed oops yet", NULL); | |
| 986 } | |
| 987 #endif | |
| 988 // Increase the code cache size - tiered compiles a lot more. | |
| 989 if (FLAG_IS_DEFAULT(ReservedCodeCacheSize)) { | |
| 990 FLAG_SET_DEFAULT(ReservedCodeCacheSize, ReservedCodeCacheSize * 2); | |
| 991 } | |
| 992 } | |
| 993 | |
|
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994 #ifndef KERNEL |
| 0 | 995 // If the user has chosen ParallelGCThreads > 0, we set UseParNewGC |
| 996 // if it's not explictly set or unset. If the user has chosen | |
| 997 // UseParNewGC and not explicitly set ParallelGCThreads we | |
| 998 // set it, unless this is a single cpu machine. | |
| 999 void Arguments::set_parnew_gc_flags() { | |
| 1064 | 1000 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC && !UseG1GC, |
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1001 "control point invariant"); |
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1002 assert(UseParNewGC, "Error"); |
| 0 | 1003 |
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1004 // Turn off AdaptiveSizePolicy by default for parnew until it is |
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1005 // complete. |
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1006 if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) { |
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1007 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
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1008 } |
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1009 |
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1010 if (ParallelGCThreads == 0) { |
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1011 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1012 Abstract_VM_Version::parallel_worker_threads()); |
| 1064 | 1013 if (ParallelGCThreads == 1) { |
| 0 | 1014 FLAG_SET_DEFAULT(UseParNewGC, false); |
| 1064 | 1015 FLAG_SET_DEFAULT(ParallelGCThreads, 0); |
| 0 | 1016 } |
| 1017 } | |
| 1064 | 1018 if (UseParNewGC) { |
| 1019 // CDS doesn't work with ParNew yet | |
| 0 | 1020 no_shared_spaces(); |
| 1021 | |
| 695 | 1022 // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 respectively, |
| 0 | 1023 // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration |
| 1024 // we set them to 1024 and 1024. | |
| 1025 // See CR 6362902. | |
| 1026 if (FLAG_IS_DEFAULT(YoungPLABSize)) { | |
| 1027 FLAG_SET_DEFAULT(YoungPLABSize, (intx)1024); | |
| 1028 } | |
| 1029 if (FLAG_IS_DEFAULT(OldPLABSize)) { | |
| 1030 FLAG_SET_DEFAULT(OldPLABSize, (intx)1024); | |
| 1031 } | |
| 1032 | |
| 1064 | 1033 // AlwaysTenure flag should make ParNew promote all at first collection. |
| 0 | 1034 // See CR 6362902. |
| 1035 if (AlwaysTenure) { | |
| 1036 FLAG_SET_CMDLINE(intx, MaxTenuringThreshold, 0); | |
| 1037 } | |
| 695 | 1038 // When using compressed oops, we use local overflow stacks, |
| 1039 // rather than using a global overflow list chained through | |
| 1040 // the klass word of the object's pre-image. | |
| 1041 if (UseCompressedOops && !ParGCUseLocalOverflow) { | |
| 1042 if (!FLAG_IS_DEFAULT(ParGCUseLocalOverflow)) { | |
| 1043 warning("Forcing +ParGCUseLocalOverflow: needed if using compressed references"); | |
| 1044 } | |
| 1045 FLAG_SET_DEFAULT(ParGCUseLocalOverflow, true); | |
| 1046 } | |
| 1047 assert(ParGCUseLocalOverflow || !UseCompressedOops, "Error"); | |
| 0 | 1048 } |
| 1049 } | |
| 1050 | |
| 1051 // Adjust some sizes to suit CMS and/or ParNew needs; these work well on | |
| 1052 // sparc/solaris for certain applications, but would gain from | |
| 1053 // further optimization and tuning efforts, and would almost | |
| 1054 // certainly gain from analysis of platform and environment. | |
| 1055 void Arguments::set_cms_and_parnew_gc_flags() { | |
| 1064 | 1056 assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC, "Error"); |
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1057 assert(UseConcMarkSweepGC, "CMS is expected to be on here"); |
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1058 |
| 0 | 1059 // If we are using CMS, we prefer to UseParNewGC, |
| 1060 // unless explicitly forbidden. | |
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1061 if (FLAG_IS_DEFAULT(UseParNewGC)) { |
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1062 FLAG_SET_ERGO(bool, UseParNewGC, true); |
| 0 | 1063 } |
| 1064 | |
| 1065 // Turn off AdaptiveSizePolicy by default for cms until it is | |
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1066 // complete. |
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1067 if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) { |
| 0 | 1068 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
| 1069 } | |
| 1070 | |
| 1071 // In either case, adjust ParallelGCThreads and/or UseParNewGC | |
| 1072 // as needed. | |
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1073 if (UseParNewGC) { |
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1074 set_parnew_gc_flags(); |
| 0 | 1075 } |
| 1076 | |
| 1077 // Now make adjustments for CMS | |
| 1078 size_t young_gen_per_worker; | |
| 1079 intx new_ratio; | |
| 1080 size_t min_new_default; | |
| 1081 intx tenuring_default; | |
| 1082 if (CMSUseOldDefaults) { // old defaults: "old" as of 6.0 | |
| 1083 if FLAG_IS_DEFAULT(CMSYoungGenPerWorker) { | |
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1084 FLAG_SET_ERGO(intx, CMSYoungGenPerWorker, 4*M); |
| 0 | 1085 } |
| 1086 young_gen_per_worker = 4*M; | |
| 1087 new_ratio = (intx)15; | |
| 1088 min_new_default = 4*M; | |
| 1089 tenuring_default = (intx)0; | |
| 1090 } else { // new defaults: "new" as of 6.0 | |
| 1091 young_gen_per_worker = CMSYoungGenPerWorker; | |
| 1092 new_ratio = (intx)7; | |
| 1093 min_new_default = 16*M; | |
| 1094 tenuring_default = (intx)4; | |
| 1095 } | |
| 1096 | |
| 1097 // Preferred young gen size for "short" pauses | |
| 1098 const uintx parallel_gc_threads = | |
| 1099 (ParallelGCThreads == 0 ? 1 : ParallelGCThreads); | |
| 1100 const size_t preferred_max_new_size_unaligned = | |
| 1101 ScaleForWordSize(young_gen_per_worker * parallel_gc_threads); | |
| 1102 const size_t preferred_max_new_size = | |
| 1103 align_size_up(preferred_max_new_size_unaligned, os::vm_page_size()); | |
| 1104 | |
| 1105 // Unless explicitly requested otherwise, size young gen | |
| 1106 // for "short" pauses ~ 4M*ParallelGCThreads | |
|
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1107 |
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1108 // If either MaxNewSize or NewRatio is set on the command line, |
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1109 // assume the user is trying to set the size of the young gen. |
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1110 |
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1111 if (FLAG_IS_DEFAULT(MaxNewSize) && FLAG_IS_DEFAULT(NewRatio)) { |
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1112 |
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1113 // Set MaxNewSize to our calculated preferred_max_new_size unless |
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1114 // NewSize was set on the command line and it is larger than |
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1115 // preferred_max_new_size. |
| 0 | 1116 if (!FLAG_IS_DEFAULT(NewSize)) { // NewSize explicitly set at command-line |
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1117 FLAG_SET_ERGO(uintx, MaxNewSize, MAX2(NewSize, preferred_max_new_size)); |
| 0 | 1118 } else { |
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1119 FLAG_SET_ERGO(uintx, MaxNewSize, preferred_max_new_size); |
| 0 | 1120 } |
| 1064 | 1121 if (PrintGCDetails && Verbose) { |
|
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1122 // Too early to use gclog_or_tty |
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1123 tty->print_cr("Ergo set MaxNewSize: " SIZE_FORMAT, MaxNewSize); |
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1124 } |
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1125 |
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1126 // Unless explicitly requested otherwise, prefer a large |
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1127 // Old to Young gen size so as to shift the collection load |
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1128 // to the old generation concurrent collector |
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1129 |
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1130 // If this is only guarded by FLAG_IS_DEFAULT(NewRatio) |
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1131 // then NewSize and OldSize may be calculated. That would |
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1132 // generally lead to some differences with ParNewGC for which |
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1133 // there was no obvious reason. Also limit to the case where |
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1134 // MaxNewSize has not been set. |
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1135 |
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1136 FLAG_SET_ERGO(intx, NewRatio, MAX2(NewRatio, new_ratio)); |
| 0 | 1137 |
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1138 // Code along this path potentially sets NewSize and OldSize |
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1139 |
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1140 // Calculate the desired minimum size of the young gen but if |
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1141 // NewSize has been set on the command line, use it here since |
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1142 // it should be the final value. |
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1143 size_t min_new; |
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1144 if (FLAG_IS_DEFAULT(NewSize)) { |
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1145 min_new = align_size_up(ScaleForWordSize(min_new_default), |
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1146 os::vm_page_size()); |
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1147 } else { |
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1148 min_new = NewSize; |
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1149 } |
| 1064 | 1150 size_t prev_initial_size = InitialHeapSize; |
| 1151 if (prev_initial_size != 0 && prev_initial_size < min_new + OldSize) { | |
| 1152 FLAG_SET_ERGO(uintx, InitialHeapSize, min_new + OldSize); | |
| 0 | 1153 // Currently minimum size and the initial heap sizes are the same. |
| 1064 | 1154 set_min_heap_size(InitialHeapSize); |
| 0 | 1155 if (PrintGCDetails && Verbose) { |
| 1156 warning("Initial heap size increased to " SIZE_FORMAT " M from " | |
| 1157 SIZE_FORMAT " M; use -XX:NewSize=... for finer control.", | |
| 1064 | 1158 InitialHeapSize/M, prev_initial_size/M); |
| 0 | 1159 } |
| 1160 } | |
|
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1161 |
| 0 | 1162 // MaxHeapSize is aligned down in collectorPolicy |
|
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1163 size_t max_heap = |
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1164 align_size_down(MaxHeapSize, |
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1165 CardTableRS::ct_max_alignment_constraint()); |
| 0 | 1166 |
| 1064 | 1167 if (PrintGCDetails && Verbose) { |
|
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1168 // Too early to use gclog_or_tty |
|
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1169 tty->print_cr("CMS set min_heap_size: " SIZE_FORMAT |
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1170 " initial_heap_size: " SIZE_FORMAT |
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1171 " max_heap: " SIZE_FORMAT, |
| 1064 | 1172 min_heap_size(), InitialHeapSize, max_heap); |
|
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1173 } |
| 0 | 1174 if (max_heap > min_new) { |
| 1175 // Unless explicitly requested otherwise, make young gen | |
| 1176 // at least min_new, and at most preferred_max_new_size. | |
| 1177 if (FLAG_IS_DEFAULT(NewSize)) { | |
|
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1178 FLAG_SET_ERGO(uintx, NewSize, MAX2(NewSize, min_new)); |
|
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|
1179 FLAG_SET_ERGO(uintx, NewSize, MIN2(preferred_max_new_size, NewSize)); |
| 1064 | 1180 if (PrintGCDetails && Verbose) { |
|
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1181 // Too early to use gclog_or_tty |
|
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1182 tty->print_cr("Ergo set NewSize: " SIZE_FORMAT, NewSize); |
|
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1183 } |
| 0 | 1184 } |
| 1185 // Unless explicitly requested otherwise, size old gen | |
| 1186 // so that it's at least 3X of NewSize to begin with; | |
| 1187 // later NewRatio will decide how it grows; see above. | |
| 1188 if (FLAG_IS_DEFAULT(OldSize)) { | |
| 1189 if (max_heap > NewSize) { | |
| 1064 | 1190 FLAG_SET_ERGO(uintx, OldSize, MIN2(3*NewSize, max_heap - NewSize)); |
| 1191 if (PrintGCDetails && Verbose) { | |
|
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1192 // Too early to use gclog_or_tty |
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1193 tty->print_cr("Ergo set OldSize: " SIZE_FORMAT, OldSize); |
|
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1194 } |
| 0 | 1195 } |
| 1196 } | |
| 1197 } | |
| 1198 } | |
| 1199 // Unless explicitly requested otherwise, definitely | |
| 1200 // promote all objects surviving "tenuring_default" scavenges. | |
| 1201 if (FLAG_IS_DEFAULT(MaxTenuringThreshold) && | |
| 1202 FLAG_IS_DEFAULT(SurvivorRatio)) { | |
|
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|
1203 FLAG_SET_ERGO(intx, MaxTenuringThreshold, tenuring_default); |
| 0 | 1204 } |
| 1205 // If we decided above (or user explicitly requested) | |
| 1206 // `promote all' (via MaxTenuringThreshold := 0), | |
| 1207 // prefer minuscule survivor spaces so as not to waste | |
| 1208 // space for (non-existent) survivors | |
| 1209 if (FLAG_IS_DEFAULT(SurvivorRatio) && MaxTenuringThreshold == 0) { | |
|
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|
1210 FLAG_SET_ERGO(intx, SurvivorRatio, MAX2((intx)1024, SurvivorRatio)); |
| 0 | 1211 } |
| 1212 // If OldPLABSize is set and CMSParPromoteBlocksToClaim is not, | |
| 1213 // set CMSParPromoteBlocksToClaim equal to OldPLABSize. | |
| 1214 // This is done in order to make ParNew+CMS configuration to work | |
| 1215 // with YoungPLABSize and OldPLABSize options. | |
| 1216 // See CR 6362902. | |
| 1217 if (!FLAG_IS_DEFAULT(OldPLABSize)) { | |
| 1218 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { | |
|
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|
1219 // OldPLABSize is not the default value but CMSParPromoteBlocksToClaim |
|
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1220 // is. In this situtation let CMSParPromoteBlocksToClaim follow |
|
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1221 // the value (either from the command line or ergonomics) of |
|
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|
1222 // OldPLABSize. Following OldPLABSize is an ergonomics decision. |
|
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|
1223 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, OldPLABSize); |
|
1145
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|
1224 } else { |
| 0 | 1225 // OldPLABSize and CMSParPromoteBlocksToClaim are both set. |
| 1226 // CMSParPromoteBlocksToClaim is a collector-specific flag, so | |
| 1227 // we'll let it to take precedence. | |
| 1228 jio_fprintf(defaultStream::error_stream(), | |
|
886
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|
1229 "Both OldPLABSize and CMSParPromoteBlocksToClaim" |
|
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|
1230 " options are specified for the CMS collector." |
|
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|
1231 " CMSParPromoteBlocksToClaim will take precedence.\n"); |
| 0 | 1232 } |
| 1233 } | |
|
1145
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|
1234 if (!FLAG_IS_DEFAULT(ResizeOldPLAB) && !ResizeOldPLAB) { |
|
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|
1235 // OldPLAB sizing manually turned off: Use a larger default setting, |
|
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|
1236 // unless it was manually specified. This is because a too-low value |
|
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|
1237 // will slow down scavenges. |
|
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|
1238 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { |
|
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|
1239 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, 50); // default value before 6631166 |
|
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|
1240 } |
|
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|
1241 } |
|
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|
1242 // Overwrite OldPLABSize which is the variable we will internally use everywhere. |
|
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|
1243 FLAG_SET_ERGO(uintx, OldPLABSize, CMSParPromoteBlocksToClaim); |
|
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|
1244 // If either of the static initialization defaults have changed, note this |
|
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|
1245 // modification. |
|
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|
1246 if (!FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim) || !FLAG_IS_DEFAULT(OldPLABWeight)) { |
|
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|
1247 CFLS_LAB::modify_initialization(OldPLABSize, OldPLABWeight); |
|
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|
1248 } |
| 1284 | 1249 if (PrintGCDetails && Verbose) { |
| 1250 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
| 1251 MarkStackSize / K, MarkStackSizeMax / K); | |
| 1252 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
| 1253 } | |
| 0 | 1254 } |
|
1145
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|
1255 #endif // KERNEL |
| 0 | 1256 |
|
1571
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|
1257 void set_object_alignment() { |
|
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|
1258 // Object alignment. |
|
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|
1259 assert(is_power_of_2(ObjectAlignmentInBytes), "ObjectAlignmentInBytes must be power of 2"); |
|
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|
1260 MinObjAlignmentInBytes = ObjectAlignmentInBytes; |
|
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|
1261 assert(MinObjAlignmentInBytes >= HeapWordsPerLong * HeapWordSize, "ObjectAlignmentInBytes value is too small"); |
|
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|
1262 MinObjAlignment = MinObjAlignmentInBytes / HeapWordSize; |
|
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|
1263 assert(MinObjAlignmentInBytes == MinObjAlignment * HeapWordSize, "ObjectAlignmentInBytes value is incorrect"); |
|
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|
1264 MinObjAlignmentInBytesMask = MinObjAlignmentInBytes - 1; |
|
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|
1265 |
|
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|
1266 LogMinObjAlignmentInBytes = exact_log2(ObjectAlignmentInBytes); |
|
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|
1267 LogMinObjAlignment = LogMinObjAlignmentInBytes - LogHeapWordSize; |
|
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|
1268 |
|
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|
1269 // Oop encoding heap max |
|
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|
1270 OopEncodingHeapMax = (uint64_t(max_juint) + 1) << LogMinObjAlignmentInBytes; |
|
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|
1271 |
|
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|
1272 #ifndef KERNEL |
|
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|
1273 // Set CMS global values |
|
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|
1274 CompactibleFreeListSpace::set_cms_values(); |
|
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|
1275 #endif // KERNEL |
|
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1276 } |
|
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|
1277 |
|
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|
1278 bool verify_object_alignment() { |
|
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1279 // Object alignment. |
|
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1280 if (!is_power_of_2(ObjectAlignmentInBytes)) { |
|
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|
1281 jio_fprintf(defaultStream::error_stream(), |
|
1829
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|
1282 "error: ObjectAlignmentInBytes=%d must be power of 2\n", |
|
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|
1283 (int)ObjectAlignmentInBytes); |
|
1571
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1284 return false; |
|
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|
1285 } |
|
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|
1286 if ((int)ObjectAlignmentInBytes < BytesPerLong) { |
|
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|
1287 jio_fprintf(defaultStream::error_stream(), |
|
1829
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|
1288 "error: ObjectAlignmentInBytes=%d must be greater or equal %d\n", |
|
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|
1289 (int)ObjectAlignmentInBytes, BytesPerLong); |
|
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|
1290 return false; |
|
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|
1291 } |
|
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|
1292 // It does not make sense to have big object alignment |
|
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1293 // since a space lost due to alignment will be greater |
|
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1294 // then a saved space from compressed oops. |
|
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1295 if ((int)ObjectAlignmentInBytes > 256) { |
|
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|
1296 jio_fprintf(defaultStream::error_stream(), |
|
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|
1297 "error: ObjectAlignmentInBytes=%d must not be greater then 256\n", |
|
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|
1298 (int)ObjectAlignmentInBytes); |
|
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|
1299 return false; |
|
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|
1300 } |
|
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|
1301 // In case page size is very small. |
|
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1302 if ((int)ObjectAlignmentInBytes >= os::vm_page_size()) { |
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1303 jio_fprintf(defaultStream::error_stream(), |
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1304 "error: ObjectAlignmentInBytes=%d must be less then page size %d\n", |
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1305 (int)ObjectAlignmentInBytes, os::vm_page_size()); |
|
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1306 return false; |
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1307 } |
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1308 return true; |
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1309 } |
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1310 |
|
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1311 inline uintx max_heap_for_compressed_oops() { |
|
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1312 // Heap should be above HeapBaseMinAddress to get zero based compressed oops. |
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1313 LP64_ONLY(return OopEncodingHeapMax - MaxPermSize - os::vm_page_size() - HeapBaseMinAddress); |
| 1064 | 1314 NOT_LP64(ShouldNotReachHere(); return 0); |
|
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1315 } |
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1316 |
| 0 | 1317 bool Arguments::should_auto_select_low_pause_collector() { |
| 1318 if (UseAutoGCSelectPolicy && | |
| 1319 !FLAG_IS_DEFAULT(MaxGCPauseMillis) && | |
| 1320 (MaxGCPauseMillis <= AutoGCSelectPauseMillis)) { | |
| 1321 if (PrintGCDetails) { | |
| 1322 // Cannot use gclog_or_tty yet. | |
| 1323 tty->print_cr("Automatic selection of the low pause collector" | |
| 1324 " based on pause goal of %d (ms)", MaxGCPauseMillis); | |
| 1325 } | |
| 1326 return true; | |
| 1327 } | |
| 1328 return false; | |
| 1329 } | |
| 1330 | |
| 1331 void Arguments::set_ergonomics_flags() { | |
| 1332 // Parallel GC is not compatible with sharing. If one specifies | |
| 1064 | 1333 // that they want sharing explicitly, do not set ergonomics flags. |
| 0 | 1334 if (DumpSharedSpaces || ForceSharedSpaces) { |
| 1335 return; | |
| 1336 } | |
| 1337 | |
| 1338 if (os::is_server_class_machine() && !force_client_mode ) { | |
| 1339 // If no other collector is requested explicitly, | |
| 1340 // let the VM select the collector based on | |
| 1341 // machine class and automatic selection policy. | |
| 1342 if (!UseSerialGC && | |
| 1343 !UseConcMarkSweepGC && | |
|
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1344 !UseG1GC && |
| 0 | 1345 !UseParNewGC && |
| 1346 !DumpSharedSpaces && | |
| 1347 FLAG_IS_DEFAULT(UseParallelGC)) { | |
| 1348 if (should_auto_select_low_pause_collector()) { | |
| 1349 FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true); | |
| 1350 } else { | |
| 1351 FLAG_SET_ERGO(bool, UseParallelGC, true); | |
| 1352 } | |
| 1353 no_shared_spaces(); | |
| 1354 } | |
| 1355 } | |
|
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1356 |
| 1010 | 1357 #ifndef ZERO |
|
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1358 #ifdef _LP64 |
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1359 // Check that UseCompressedOops can be set with the max heap size allocated |
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1360 // by ergonomics. |
| 187 | 1361 if (MaxHeapSize <= max_heap_for_compressed_oops()) { |
| 1783 | 1362 #if !defined(COMPILER1) || defined(TIERED) |
| 932 | 1363 if (FLAG_IS_DEFAULT(UseCompressedOops) && !UseG1GC) { |
| 1364 FLAG_SET_ERGO(bool, UseCompressedOops, true); | |
|
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1365 } |
| 1060 | 1366 #endif |
|
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1367 #ifdef _WIN64 |
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1368 if (UseLargePages && UseCompressedOops) { |
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1369 // Cannot allocate guard pages for implicit checks in indexed addressing |
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1370 // mode, when large pages are specified on windows. |
|
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1371 // This flag could be switched ON if narrow oop base address is set to 0, |
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1372 // see code in Universe::initialize_heap(). |
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1373 Universe::set_narrow_oop_use_implicit_null_checks(false); |
|
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1374 } |
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1375 #endif // _WIN64 |
|
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1376 } else { |
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1377 if (UseCompressedOops && !FLAG_IS_DEFAULT(UseCompressedOops)) { |
| 344 | 1378 warning("Max heap size too large for Compressed Oops"); |
|
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1379 FLAG_SET_DEFAULT(UseCompressedOops, false); |
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1380 } |
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1381 } |
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1382 // Also checks that certain machines are slower with compressed oops |
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1383 // in vm_version initialization code. |
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1384 #endif // _LP64 |
| 1010 | 1385 #endif // !ZERO |
| 0 | 1386 } |
| 1387 | |
| 1388 void Arguments::set_parallel_gc_flags() { | |
|
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1389 assert(UseParallelGC || UseParallelOldGC, "Error"); |
| 0 | 1390 // If parallel old was requested, automatically enable parallel scavenge. |
| 1391 if (UseParallelOldGC && !UseParallelGC && FLAG_IS_DEFAULT(UseParallelGC)) { | |
| 1392 FLAG_SET_DEFAULT(UseParallelGC, true); | |
| 1393 } | |
| 1394 | |
| 1395 // If no heap maximum was requested explicitly, use some reasonable fraction | |
| 1396 // of the physical memory, up to a maximum of 1GB. | |
| 1397 if (UseParallelGC) { | |
|
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1398 FLAG_SET_ERGO(uintx, ParallelGCThreads, |
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1399 Abstract_VM_Version::parallel_worker_threads()); |
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1400 |
| 0 | 1401 // If InitialSurvivorRatio or MinSurvivorRatio were not specified, but the |
| 1402 // SurvivorRatio has been set, reset their default values to SurvivorRatio + | |
| 1403 // 2. By doing this we make SurvivorRatio also work for Parallel Scavenger. | |
| 1404 // See CR 6362902 for details. | |
| 1405 if (!FLAG_IS_DEFAULT(SurvivorRatio)) { | |
| 1406 if (FLAG_IS_DEFAULT(InitialSurvivorRatio)) { | |
| 1407 FLAG_SET_DEFAULT(InitialSurvivorRatio, SurvivorRatio + 2); | |
| 1408 } | |
| 1409 if (FLAG_IS_DEFAULT(MinSurvivorRatio)) { | |
| 1410 FLAG_SET_DEFAULT(MinSurvivorRatio, SurvivorRatio + 2); | |
| 1411 } | |
| 1412 } | |
| 1413 | |
| 1414 if (UseParallelOldGC) { | |
| 1415 // Par compact uses lower default values since they are treated as | |
|
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1416 // minimums. These are different defaults because of the different |
|
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1417 // interpretation and are not ergonomically set. |
| 0 | 1418 if (FLAG_IS_DEFAULT(MarkSweepDeadRatio)) { |
|
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1419 FLAG_SET_DEFAULT(MarkSweepDeadRatio, 1); |
| 0 | 1420 } |
| 1421 if (FLAG_IS_DEFAULT(PermMarkSweepDeadRatio)) { | |
|
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1422 FLAG_SET_DEFAULT(PermMarkSweepDeadRatio, 5); |
| 0 | 1423 } |
| 1424 } | |
| 1425 } | |
| 1426 } | |
| 1427 | |
|
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1428 void Arguments::set_g1_gc_flags() { |
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1429 assert(UseG1GC, "Error"); |
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1430 #ifdef COMPILER1 |
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1431 FastTLABRefill = false; |
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1432 #endif |
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1433 FLAG_SET_DEFAULT(ParallelGCThreads, |
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1434 Abstract_VM_Version::parallel_worker_threads()); |
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1435 if (ParallelGCThreads == 0) { |
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1436 FLAG_SET_DEFAULT(ParallelGCThreads, |
| 751 | 1437 Abstract_VM_Version::parallel_worker_threads()); |
|
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1438 } |
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1439 no_shared_spaces(); |
| 751 | 1440 |
| 1284 | 1441 if (FLAG_IS_DEFAULT(MarkStackSize)) { |
|
1311
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1442 FLAG_SET_DEFAULT(MarkStackSize, 128 * TASKQUEUE_SIZE); |
| 1284 | 1443 } |
| 1444 if (PrintGCDetails && Verbose) { | |
| 1445 tty->print_cr("MarkStackSize: %uk MarkStackSizeMax: %uk", | |
| 1446 MarkStackSize / K, MarkStackSizeMax / K); | |
| 1447 tty->print_cr("ConcGCThreads: %u", ConcGCThreads); | |
| 1448 } | |
| 1356 | 1449 |
| 1450 if (FLAG_IS_DEFAULT(GCTimeRatio) || GCTimeRatio == 0) { | |
| 1451 // In G1, we want the default GC overhead goal to be higher than | |
| 1452 // say in PS. So we set it here to 10%. Otherwise the heap might | |
| 1453 // be expanded more aggressively than we would like it to. In | |
| 1454 // fact, even 10% seems to not be high enough in some cases | |
| 1455 // (especially small GC stress tests that the main thing they do | |
| 1456 // is allocation). We might consider increase it further. | |
| 1457 FLAG_SET_DEFAULT(GCTimeRatio, 9); | |
| 1458 } | |
|
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1459 } |
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1460 |
| 1064 | 1461 void Arguments::set_heap_size() { |
| 1462 if (!FLAG_IS_DEFAULT(DefaultMaxRAMFraction)) { | |
| 1463 // Deprecated flag | |
| 1464 FLAG_SET_CMDLINE(uintx, MaxRAMFraction, DefaultMaxRAMFraction); | |
| 1465 } | |
| 1466 | |
| 1467 const julong phys_mem = | |
| 1468 FLAG_IS_DEFAULT(MaxRAM) ? MIN2(os::physical_memory(), (julong)MaxRAM) | |
| 1469 : (julong)MaxRAM; | |
| 1470 | |
| 1471 // If the maximum heap size has not been set with -Xmx, | |
| 1472 // then set it as fraction of the size of physical memory, | |
| 1473 // respecting the maximum and minimum sizes of the heap. | |
|
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1474 if (FLAG_IS_DEFAULT(MaxHeapSize)) { |
| 1064 | 1475 julong reasonable_max = phys_mem / MaxRAMFraction; |
| 1476 | |
| 1477 if (phys_mem <= MaxHeapSize * MinRAMFraction) { | |
| 1478 // Small physical memory, so use a minimum fraction of it for the heap | |
| 1479 reasonable_max = phys_mem / MinRAMFraction; | |
| 1480 } else { | |
| 1481 // Not-small physical memory, so require a heap at least | |
| 1482 // as large as MaxHeapSize | |
| 1483 reasonable_max = MAX2(reasonable_max, (julong)MaxHeapSize); | |
| 1484 } | |
| 1485 if (!FLAG_IS_DEFAULT(ErgoHeapSizeLimit) && ErgoHeapSizeLimit != 0) { | |
| 1486 // Limit the heap size to ErgoHeapSizeLimit | |
| 1487 reasonable_max = MIN2(reasonable_max, (julong)ErgoHeapSizeLimit); | |
|
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1488 } |
| 1064 | 1489 if (UseCompressedOops) { |
| 1490 // Limit the heap size to the maximum possible when using compressed oops | |
| 1491 reasonable_max = MIN2(reasonable_max, (julong)max_heap_for_compressed_oops()); | |
| 1492 } | |
| 1493 reasonable_max = os::allocatable_physical_memory(reasonable_max); | |
| 1494 | |
| 1495 if (!FLAG_IS_DEFAULT(InitialHeapSize)) { | |
| 1496 // An initial heap size was specified on the command line, | |
| 1497 // so be sure that the maximum size is consistent. Done | |
| 1498 // after call to allocatable_physical_memory because that | |
| 1499 // method might reduce the allocation size. | |
| 1500 reasonable_max = MAX2(reasonable_max, (julong)InitialHeapSize); | |
| 1501 } | |
| 1502 | |
|
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1503 if (PrintGCDetails && Verbose) { |
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1504 // Cannot use gclog_or_tty yet. |
| 1064 | 1505 tty->print_cr(" Maximum heap size " SIZE_FORMAT, reasonable_max); |
|
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1506 } |
| 1064 | 1507 FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx)reasonable_max); |
| 1508 } | |
| 1509 | |
| 1510 // If the initial_heap_size has not been set with InitialHeapSize | |
| 1511 // or -Xms, then set it as fraction of the size of physical memory, | |
| 1512 // respecting the maximum and minimum sizes of the heap. | |
| 1513 if (FLAG_IS_DEFAULT(InitialHeapSize)) { | |
|
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1514 julong reasonable_minimum = (julong)(OldSize + NewSize); |
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1515 |
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1516 reasonable_minimum = MIN2(reasonable_minimum, (julong)MaxHeapSize); |
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1517 |
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1518 reasonable_minimum = os::allocatable_physical_memory(reasonable_minimum); |
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1519 |
| 1064 | 1520 julong reasonable_initial = phys_mem / InitialRAMFraction; |
| 1521 | |
|
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1522 reasonable_initial = MAX2(reasonable_initial, reasonable_minimum); |
| 1064 | 1523 reasonable_initial = MIN2(reasonable_initial, (julong)MaxHeapSize); |
| 1524 | |
| 1525 reasonable_initial = os::allocatable_physical_memory(reasonable_initial); | |
| 1526 | |
| 1527 if (PrintGCDetails && Verbose) { | |
| 1528 // Cannot use gclog_or_tty yet. | |
| 1529 tty->print_cr(" Initial heap size " SIZE_FORMAT, (uintx)reasonable_initial); | |
|
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1530 tty->print_cr(" Minimum heap size " SIZE_FORMAT, (uintx)reasonable_minimum); |
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1531 } |
| 1064 | 1532 FLAG_SET_ERGO(uintx, InitialHeapSize, (uintx)reasonable_initial); |
|
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1533 set_min_heap_size((uintx)reasonable_minimum); |
|
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1534 } |
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1535 } |
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1536 |
| 0 | 1537 // This must be called after ergonomics because we want bytecode rewriting |
| 1538 // if the server compiler is used, or if UseSharedSpaces is disabled. | |
| 1539 void Arguments::set_bytecode_flags() { | |
| 1540 // Better not attempt to store into a read-only space. | |
| 1541 if (UseSharedSpaces) { | |
| 1542 FLAG_SET_DEFAULT(RewriteBytecodes, false); | |
| 1543 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
| 1544 } | |
| 1545 | |
| 1546 if (!RewriteBytecodes) { | |
| 1547 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
| 1548 } | |
| 1549 } | |
| 1550 | |
| 1551 // Aggressive optimization flags -XX:+AggressiveOpts | |
| 1552 void Arguments::set_aggressive_opts_flags() { | |
|
17
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1553 #ifdef COMPILER2 |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1554 if (AggressiveOpts || !FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1555 if (FLAG_IS_DEFAULT(EliminateAutoBox)) { |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1556 FLAG_SET_DEFAULT(EliminateAutoBox, true); |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1557 } |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1558 if (FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1559 FLAG_SET_DEFAULT(AutoBoxCacheMax, 20000); |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1560 } |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1561 |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1562 // Feed the cache size setting into the JDK |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1563 char buffer[1024]; |
|
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
489
diff
changeset
|
1564 sprintf(buffer, "java.lang.Integer.IntegerCache.high=" INTX_FORMAT, AutoBoxCacheMax); |
|
17
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1565 add_property(buffer); |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1566 } |
| 65 | 1567 if (AggressiveOpts && FLAG_IS_DEFAULT(DoEscapeAnalysis)) { |
| 1568 FLAG_SET_DEFAULT(DoEscapeAnalysis, true); | |
| 1569 } | |
|
416
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
never
parents:
363
diff
changeset
|
1570 if (AggressiveOpts && FLAG_IS_DEFAULT(BiasedLockingStartupDelay)) { |
|
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
never
parents:
363
diff
changeset
|
1571 FLAG_SET_DEFAULT(BiasedLockingStartupDelay, 500); |
|
b6cfd754403d
6649622: HotSpot Biased locking needs tuning on latest CPUs
never
parents:
363
diff
changeset
|
1572 } |
| 1622 | 1573 if (AggressiveOpts && FLAG_IS_DEFAULT(OptimizeStringConcat)) { |
| 1574 FLAG_SET_DEFAULT(OptimizeStringConcat, true); | |
| 1575 } | |
| 1763 | 1576 if (AggressiveOpts && FLAG_IS_DEFAULT(OptimizeFill)) { |
| 1577 FLAG_SET_DEFAULT(OptimizeFill, true); | |
| 1578 } | |
|
17
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1579 #endif |
|
ff5961f4c095
6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
never
parents:
0
diff
changeset
|
1580 |
| 0 | 1581 if (AggressiveOpts) { |
| 61 | 1582 // Sample flag setting code |
| 1583 // if (FLAG_IS_DEFAULT(EliminateZeroing)) { | |
| 1584 // FLAG_SET_DEFAULT(EliminateZeroing, true); | |
| 1585 // } | |
| 0 | 1586 } |
| 1587 } | |
| 1588 | |
| 1589 //=========================================================================================================== | |
| 1590 // Parsing of java.compiler property | |
| 1591 | |
| 1592 void Arguments::process_java_compiler_argument(char* arg) { | |
| 1593 // For backwards compatibility, Djava.compiler=NONE or "" | |
| 1594 // causes us to switch to -Xint mode UNLESS -Xdebug | |
| 1595 // is also specified. | |
| 1596 if (strlen(arg) == 0 || strcasecmp(arg, "NONE") == 0) { | |
| 1597 set_java_compiler(true); // "-Djava.compiler[=...]" most recently seen. | |
| 1598 } | |
| 1599 } | |
| 1600 | |
| 1601 void Arguments::process_java_launcher_argument(const char* launcher, void* extra_info) { | |
| 1602 _sun_java_launcher = strdup(launcher); | |
| 1603 } | |
| 1604 | |
| 1605 bool Arguments::created_by_java_launcher() { | |
| 1606 assert(_sun_java_launcher != NULL, "property must have value"); | |
| 1607 return strcmp(DEFAULT_JAVA_LAUNCHER, _sun_java_launcher) != 0; | |
| 1608 } | |
| 1609 | |
| 1610 //=========================================================================================================== | |
| 1611 // Parsing of main arguments | |
| 1612 | |
|
1244
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1613 bool Arguments::verify_interval(uintx val, uintx min, |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1614 uintx max, const char* name) { |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1615 // Returns true iff value is in the inclusive interval [min..max] |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1616 // false, otherwise. |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1617 if (val >= min && val <= max) { |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1618 return true; |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1619 } |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1620 jio_fprintf(defaultStream::error_stream(), |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1621 "%s of " UINTX_FORMAT " is invalid; must be between " UINTX_FORMAT |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1622 " and " UINTX_FORMAT "\n", |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1623 name, val, min, max); |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1624 return false; |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1625 } |
|
745c853ee57f
6885297: java -XX:RefDiscoveryPolicy=2 or -XX:TLABWasteTargetPercent=0 cause VM crash
johnc
parents:
1188
diff
changeset
|
1626 |
|
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1627 bool Arguments::verify_min_value(intx val, intx min, const char* name) { |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1628 // Returns true if given value is greater than specified min threshold |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1629 // false, otherwise. |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1630 if (val >= min ) { |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1631 return true; |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1632 } |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1633 jio_fprintf(defaultStream::error_stream(), |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1634 "%s of " INTX_FORMAT " is invalid; must be greater than " INTX_FORMAT "\n", |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1635 name, val, min); |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1636 return false; |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1637 } |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1638 |
| 0 | 1639 bool Arguments::verify_percentage(uintx value, const char* name) { |
| 1640 if (value <= 100) { | |
| 1641 return true; | |
| 1642 } | |
| 1643 jio_fprintf(defaultStream::error_stream(), | |
| 1644 "%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n", | |
| 1645 name, value); | |
| 1646 return false; | |
| 1647 } | |
| 1648 | |
| 1064 | 1649 static void force_serial_gc() { |
| 0 | 1650 FLAG_SET_DEFAULT(UseSerialGC, true); |
| 1651 FLAG_SET_DEFAULT(UseParNewGC, false); | |
| 1652 FLAG_SET_DEFAULT(UseConcMarkSweepGC, false); | |
|
945
68ef3fdcdb76
6872136: CMS: confusing message may be printed when a collector is switched off implicitly
ysr
parents:
932
diff
changeset
|
1653 FLAG_SET_DEFAULT(CMSIncrementalMode, false); // special CMS suboption |
| 0 | 1654 FLAG_SET_DEFAULT(UseParallelGC, false); |
| 1655 FLAG_SET_DEFAULT(UseParallelOldGC, false); | |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1656 FLAG_SET_DEFAULT(UseG1GC, false); |
| 0 | 1657 } |
| 1658 | |
| 1659 static bool verify_serial_gc_flags() { | |
| 1660 return (UseSerialGC && | |
|
945
68ef3fdcdb76
6872136: CMS: confusing message may be printed when a collector is switched off implicitly
ysr
parents:
932
diff
changeset
|
1661 !(UseParNewGC || (UseConcMarkSweepGC || CMSIncrementalMode) || UseG1GC || |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
1662 UseParallelGC || UseParallelOldGC)); |
| 0 | 1663 } |
| 1664 | |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1665 // Check consistency of GC selection |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1666 bool Arguments::check_gc_consistency() { |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1667 bool status = true; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1668 // Ensure that the user has not selected conflicting sets |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1669 // of collectors. [Note: this check is merely a user convenience; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1670 // collectors over-ride each other so that only a non-conflicting |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1671 // set is selected; however what the user gets is not what they |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1672 // may have expected from the combination they asked for. It's |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1673 // better to reduce user confusion by not allowing them to |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1674 // select conflicting combinations. |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1675 uint i = 0; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1676 if (UseSerialGC) i++; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1677 if (UseConcMarkSweepGC || UseParNewGC) i++; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1678 if (UseParallelGC || UseParallelOldGC) i++; |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
751
diff
changeset
|
1679 if (UseG1GC) i++; |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1680 if (i > 1) { |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1681 jio_fprintf(defaultStream::error_stream(), |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1682 "Conflicting collector combinations in option list; " |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1683 "please refer to the release notes for the combinations " |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1684 "allowed\n"); |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1685 status = false; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1686 } |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1687 |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1688 return status; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1689 } |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
1690 |
|
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1691 // Check stack pages settings |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1692 bool Arguments::check_stack_pages() |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1693 { |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1694 bool status = true; |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1695 status = status && verify_min_value(StackYellowPages, 1, "StackYellowPages"); |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1696 status = status && verify_min_value(StackRedPages, 1, "StackRedPages"); |
|
1867
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1864
diff
changeset
|
1697 // greater stack shadow pages can't generate instruction to bang stack |
|
b6aedd1acdc0
6983240: guarantee((Solaris::min_stack_allowed >= (StackYellowPages+StackRedPages...) wrong
coleenp
parents:
1864
diff
changeset
|
1698 status = status && verify_interval(StackShadowPages, 1, 50, "StackShadowPages"); |
|
1744
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1699 return status; |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1700 } |
|
f8c5d1bdaad4
6885308: The incorrect -XX:StackRedPages, -XX:StackShadowPages, -XX:StackYellowPages could cause VM crash
ptisnovs
parents:
1681
diff
changeset
|
1701 |
| 0 | 1702 // Check the consistency of vm_init_args |
| 1703 bool Arguments::check_vm_args_consistency() { | |
| 1704 // Method for adding checks for flag consistency. | |
| 1705 // The intent is to warn the user of all possible conflicts, | |
| 1706 // before returning an error. | |
| 1707 // Note: Needs platform-dependent factoring. | |
| 1708 bool status = true; | |
| 1709 | |
| 1710 #if ( (defined(COMPILER2) && defined(SPARC))) | |
| 1711 // NOTE: The call to VM_Version_init depends on the fact that VM_Version_init | |
| 1712 // on sparc doesn't require generation of a stub as is the case on, e.g., | |
| 1713 // x86. Normally, VM_Version_init must be called from init_globals in | |
| 1714 // init.cpp, which is called by the initial java thread *after* arguments | |
| 1715 // have been parsed. VM_Version_init gets called twice on sparc. | |
| 1716 extern void VM_Version_init(); | |
| 1717 VM_Version_init(); | |
| 1718 if (!VM_Version::has_v9()) { | |
| 1719 jio_fprintf(defaultStream::error_stream(), | |
| 1720 "V8 Machine detected, Server requires V9\n"); | |
| 1721 status = false; | |
| 1722 } | |
| 1723 #endif /* COMPILER2 && SPARC */ | |
| 1724 | |
| 1725 // Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product | |
| 1726 // builds so the cost of stack banging can be measured. | |
| 1727 #if (defined(PRODUCT) && defined(SOLARIS)) | |
| 1728 if (!UseBoundThreads && !UseStackBanging) { | |
| 1729 jio_fprintf(defaultStream::error_stream(), | |
| 1730 "-UseStackBanging conflicts with -UseBoundThreads\n"); | |
| 1731 | |
| 1732 status = false; | |
| 1733 } | |
| 1734 #endif | |
| 1735 | |
| 1736 if (TLABRefillWasteFraction == 0) { | |
| 1737 jio_fprintf(defaultStream::error_stream(), | |
| 1738 "TLABRefillWasteFraction should be a denominator, " | |
| 1739 "not " SIZE_FORMAT "\n", | |
| 1740 TLABRefillWasteFraction); | |
| 1741 status = false; | |
| 1742 } | |
| 1743 | |
|
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1744 status = status && verify_percentage(MaxLiveObjectEvacuationRatio, |
| 0 | 1745 "MaxLiveObjectEvacuationRatio"); |
|
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1746 status = status && verify_percentage(AdaptiveSizePolicyWeight, |
| 0 | 1747 "AdaptiveSizePolicyWeight"); |
|
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1748 status = status && verify_percentage(AdaptivePermSizeWeight, "AdaptivePermSizeWeight"); |
|
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1749 status = status && verify_percentage(ThresholdTolerance, "ThresholdTolerance"); |
|
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1750 status = status && verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio"); |
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1751 status = status && verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio"); |
| 0 | 1752 |
| 1753 if (MinHeapFreeRatio > MaxHeapFreeRatio) { | |
| 1754 jio_fprintf(defaultStream::error_stream(), | |
| 1755 "MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or " | |
| 1756 "equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n", | |
| 1757 MinHeapFreeRatio, MaxHeapFreeRatio); | |
| 1758 status = false; | |
| 1759 } | |
| 1760 // Keeping the heap 100% free is hard ;-) so limit it to 99%. | |
| 1761 MinHeapFreeRatio = MIN2(MinHeapFreeRatio, (uintx) 99); | |
| 1762 | |
| 1763 if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) { | |
| 1764 MarkSweepAlwaysCompactCount = 1; // Move objects every gc. | |
| 1765 } | |
| 1766 | |
|
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1767 if (UseParallelOldGC && ParallelOldGCSplitALot) { |
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1768 // Settings to encourage splitting. |
|
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1769 if (!FLAG_IS_CMDLINE(NewRatio)) { |
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1770 FLAG_SET_CMDLINE(intx, NewRatio, 2); |
|
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1771 } |
|
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1772 if (!FLAG_IS_CMDLINE(ScavengeBeforeFullGC)) { |
|
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1773 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
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1774 } |
|
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1775 } |
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1776 |
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1777 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
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1778 status = status && verify_percentage(GCTimeLimit, "GCTimeLimit"); |
| 0 | 1779 if (GCTimeLimit == 100) { |
| 1780 // Turn off gc-overhead-limit-exceeded checks | |
| 1781 FLAG_SET_DEFAULT(UseGCOverheadLimit, false); | |
| 1782 } | |
| 1783 | |
|
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1784 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
| 0 | 1785 |
|
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1786 // Check whether user-specified sharing option conflicts with GC or page size. |
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1787 // Both sharing and large pages are enabled by default on some platforms; |
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1788 // large pages override sharing only if explicitly set on the command line. |
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1789 const bool cannot_share = UseConcMarkSweepGC || CMSIncrementalMode || |
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1790 UseG1GC || UseParNewGC || UseParallelGC || UseParallelOldGC || |
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1791 UseLargePages && FLAG_IS_CMDLINE(UseLargePages); |
| 0 | 1792 if (cannot_share) { |
| 1793 // Either force sharing on by forcing the other options off, or | |
| 1794 // force sharing off. | |
| 1795 if (DumpSharedSpaces || ForceSharedSpaces) { | |
|
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1796 jio_fprintf(defaultStream::error_stream(), |
|
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1797 "Using Serial GC and default page size because of %s\n", |
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1798 ForceSharedSpaces ? "-Xshare:on" : "-Xshare:dump"); |
| 1064 | 1799 force_serial_gc(); |
|
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1800 FLAG_SET_DEFAULT(UseLargePages, false); |
| 0 | 1801 } else { |
| 1064 | 1802 if (UseSharedSpaces && Verbose) { |
|
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1803 jio_fprintf(defaultStream::error_stream(), |
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1804 "Turning off use of shared archive because of " |
| 1064 | 1805 "choice of garbage collector or large pages\n"); |
|
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1806 } |
| 0 | 1807 no_shared_spaces(); |
| 1808 } | |
|
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1809 } else if (UseLargePages && (UseSharedSpaces || DumpSharedSpaces)) { |
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1810 FLAG_SET_DEFAULT(UseLargePages, false); |
| 0 | 1811 } |
| 1812 | |
|
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1813 status = status && check_gc_consistency(); |
|
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1814 status = status && check_stack_pages(); |
| 0 | 1815 |
| 1816 if (_has_alloc_profile) { | |
| 1817 if (UseParallelGC || UseParallelOldGC) { | |
| 1818 jio_fprintf(defaultStream::error_stream(), | |
| 1819 "error: invalid argument combination.\n" | |
| 1820 "Allocation profiling (-Xaprof) cannot be used together with " | |
| 1821 "Parallel GC (-XX:+UseParallelGC or -XX:+UseParallelOldGC).\n"); | |
| 1822 status = false; | |
| 1823 } | |
| 1824 if (UseConcMarkSweepGC) { | |
| 1825 jio_fprintf(defaultStream::error_stream(), | |
| 1826 "error: invalid argument combination.\n" | |
| 1827 "Allocation profiling (-Xaprof) cannot be used together with " | |
| 1828 "the CMS collector (-XX:+UseConcMarkSweepGC).\n"); | |
| 1829 status = false; | |
| 1830 } | |
| 1831 } | |
| 1832 | |
| 1833 if (CMSIncrementalMode) { | |
| 1834 if (!UseConcMarkSweepGC) { | |
| 1835 jio_fprintf(defaultStream::error_stream(), | |
| 1836 "error: invalid argument combination.\n" | |
| 1837 "The CMS collector (-XX:+UseConcMarkSweepGC) must be " | |
| 1838 "selected in order\nto use CMSIncrementalMode.\n"); | |
| 1839 status = false; | |
| 1840 } else { | |
|
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1841 status = status && verify_percentage(CMSIncrementalDutyCycle, |
| 0 | 1842 "CMSIncrementalDutyCycle"); |
|
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1843 status = status && verify_percentage(CMSIncrementalDutyCycleMin, |
| 0 | 1844 "CMSIncrementalDutyCycleMin"); |
|
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1845 status = status && verify_percentage(CMSIncrementalSafetyFactor, |
| 0 | 1846 "CMSIncrementalSafetyFactor"); |
|
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1847 status = status && verify_percentage(CMSIncrementalOffset, |
| 0 | 1848 "CMSIncrementalOffset"); |
|
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1849 status = status && verify_percentage(CMSExpAvgFactor, |
| 0 | 1850 "CMSExpAvgFactor"); |
| 1851 // If it was not set on the command line, set | |
| 1852 // CMSInitiatingOccupancyFraction to 1 so icms can initiate cycles early. | |
| 1853 if (CMSInitiatingOccupancyFraction < 0) { | |
| 1854 FLAG_SET_DEFAULT(CMSInitiatingOccupancyFraction, 1); | |
| 1855 } | |
| 1856 } | |
| 1857 } | |
| 1858 | |
| 1859 // CMS space iteration, which FLSVerifyAllHeapreferences entails, | |
| 1860 // insists that we hold the requisite locks so that the iteration is | |
| 1861 // MT-safe. For the verification at start-up and shut-down, we don't | |
| 1862 // yet have a good way of acquiring and releasing these locks, | |
| 1863 // which are not visible at the CollectedHeap level. We want to | |
| 1864 // be able to acquire these locks and then do the iteration rather | |
| 1865 // than just disable the lock verification. This will be fixed under | |
| 1866 // bug 4788986. | |
| 1867 if (UseConcMarkSweepGC && FLSVerifyAllHeapReferences) { | |
| 1868 if (VerifyGCStartAt == 0) { | |
| 1869 warning("Heap verification at start-up disabled " | |
| 1870 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
| 1871 VerifyGCStartAt = 1; // Disable verification at start-up | |
| 1872 } | |
| 1873 if (VerifyBeforeExit) { | |
| 1874 warning("Heap verification at shutdown disabled " | |
| 1875 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
| 1876 VerifyBeforeExit = false; // Disable verification at shutdown | |
| 1877 } | |
| 1878 } | |
| 1879 | |
| 1880 // Note: only executed in non-PRODUCT mode | |
| 1881 if (!UseAsyncConcMarkSweepGC && | |
| 1882 (ExplicitGCInvokesConcurrent || | |
| 1883 ExplicitGCInvokesConcurrentAndUnloadsClasses)) { | |
| 1884 jio_fprintf(defaultStream::error_stream(), | |
| 1885 "error: +ExplictGCInvokesConcurrent[AndUnloadsClasses] conflicts" | |
| 1886 " with -UseAsyncConcMarkSweepGC"); | |
| 1887 status = false; | |
| 1888 } | |
| 1889 | |
|
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1890 if (UseG1GC) { |
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1891 status = status && verify_percentage(InitiatingHeapOccupancyPercent, |
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1892 "InitiatingHeapOccupancyPercent"); |
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1893 } |
|
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1894 |
|
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|
1895 status = status && verify_interval(RefDiscoveryPolicy, |
|
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|
1896 ReferenceProcessor::DiscoveryPolicyMin, |
|
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|
1897 ReferenceProcessor::DiscoveryPolicyMax, |
|
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|
1898 "RefDiscoveryPolicy"); |
|
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1899 |
|
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1900 // Limit the lower bound of this flag to 1 as it is used in a division |
|
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1901 // expression. |
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1902 status = status && verify_interval(TLABWasteTargetPercent, |
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1903 1, 100, "TLABWasteTargetPercent"); |
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1904 |
|
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1905 status = status && verify_object_alignment(); |
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1906 |
| 0 | 1907 return status; |
| 1908 } | |
| 1909 | |
| 1910 bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore, | |
| 1911 const char* option_type) { | |
| 1912 if (ignore) return false; | |
| 1913 | |
| 1914 const char* spacer = " "; | |
| 1915 if (option_type == NULL) { | |
| 1916 option_type = ++spacer; // Set both to the empty string. | |
| 1917 } | |
| 1918 | |
| 1919 if (os::obsolete_option(option)) { | |
| 1920 jio_fprintf(defaultStream::error_stream(), | |
| 1921 "Obsolete %s%soption: %s\n", option_type, spacer, | |
| 1922 option->optionString); | |
| 1923 return false; | |
| 1924 } else { | |
| 1925 jio_fprintf(defaultStream::error_stream(), | |
| 1926 "Unrecognized %s%soption: %s\n", option_type, spacer, | |
| 1927 option->optionString); | |
| 1928 return true; | |
| 1929 } | |
| 1930 } | |
| 1931 | |
| 1932 static const char* user_assertion_options[] = { | |
| 1933 "-da", "-ea", "-disableassertions", "-enableassertions", 0 | |
| 1934 }; | |
| 1935 | |
| 1936 static const char* system_assertion_options[] = { | |
| 1937 "-dsa", "-esa", "-disablesystemassertions", "-enablesystemassertions", 0 | |
| 1938 }; | |
| 1939 | |
| 1940 // Return true if any of the strings in null-terminated array 'names' matches. | |
| 1941 // If tail_allowed is true, then the tail must begin with a colon; otherwise, | |
| 1942 // the option must match exactly. | |
| 1943 static bool match_option(const JavaVMOption* option, const char** names, const char** tail, | |
| 1944 bool tail_allowed) { | |
| 1945 for (/* empty */; *names != NULL; ++names) { | |
| 1946 if (match_option(option, *names, tail)) { | |
| 1947 if (**tail == '\0' || tail_allowed && **tail == ':') { | |
| 1948 return true; | |
| 1949 } | |
| 1950 } | |
| 1951 } | |
| 1952 return false; | |
| 1953 } | |
| 1954 | |
| 1284 | 1955 bool Arguments::parse_uintx(const char* value, |
| 1956 uintx* uintx_arg, | |
| 1957 uintx min_size) { | |
| 1958 | |
| 1959 // Check the sign first since atomull() parses only unsigned values. | |
| 1960 bool value_is_positive = !(*value == '-'); | |
| 1961 | |
| 1962 if (value_is_positive) { | |
| 1963 julong n; | |
| 1964 bool good_return = atomull(value, &n); | |
| 1965 if (good_return) { | |
| 1966 bool above_minimum = n >= min_size; | |
| 1967 bool value_is_too_large = n > max_uintx; | |
| 1968 | |
| 1969 if (above_minimum && !value_is_too_large) { | |
| 1970 *uintx_arg = n; | |
| 1971 return true; | |
| 1972 } | |
| 1973 } | |
| 1974 } | |
| 1975 return false; | |
| 1976 } | |
| 1977 | |
| 0 | 1978 Arguments::ArgsRange Arguments::parse_memory_size(const char* s, |
|
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1979 julong* long_arg, |
|
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1980 julong min_size) { |
|
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1981 if (!atomull(s, long_arg)) return arg_unreadable; |
| 0 | 1982 return check_memory_size(*long_arg, min_size); |
| 1983 } | |
| 1984 | |
| 1985 // Parse JavaVMInitArgs structure | |
| 1986 | |
| 1987 jint Arguments::parse_vm_init_args(const JavaVMInitArgs* args) { | |
| 1988 // For components of the system classpath. | |
| 1989 SysClassPath scp(Arguments::get_sysclasspath()); | |
| 1990 bool scp_assembly_required = false; | |
| 1991 | |
| 1992 // Save default settings for some mode flags | |
| 1993 Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
| 1994 Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
| 1995 Arguments::_ClipInlining = ClipInlining; | |
| 1996 Arguments::_BackgroundCompilation = BackgroundCompilation; | |
| 1997 | |
| 1998 // Parse JAVA_TOOL_OPTIONS environment variable (if present) | |
| 1999 jint result = parse_java_tool_options_environment_variable(&scp, &scp_assembly_required); | |
| 2000 if (result != JNI_OK) { | |
| 2001 return result; | |
| 2002 } | |
| 2003 | |
| 2004 // Parse JavaVMInitArgs structure passed in | |
| 2005 result = parse_each_vm_init_arg(args, &scp, &scp_assembly_required, COMMAND_LINE); | |
| 2006 if (result != JNI_OK) { | |
| 2007 return result; | |
| 2008 } | |
| 2009 | |
|
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2010 if (AggressiveOpts) { |
|
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2011 // Insert alt-rt.jar between user-specified bootclasspath |
|
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2012 // prefix and the default bootclasspath. os::set_boot_path() |
|
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2013 // uses meta_index_dir as the default bootclasspath directory. |
|
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2014 const char* altclasses_jar = "alt-rt.jar"; |
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2015 size_t altclasses_path_len = strlen(get_meta_index_dir()) + 1 + |
|
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|
2016 strlen(altclasses_jar); |
|
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2017 char* altclasses_path = NEW_C_HEAP_ARRAY(char, altclasses_path_len); |
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2018 strcpy(altclasses_path, get_meta_index_dir()); |
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2019 strcat(altclasses_path, altclasses_jar); |
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2020 scp.add_suffix_to_prefix(altclasses_path); |
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2021 scp_assembly_required = true; |
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2022 FREE_C_HEAP_ARRAY(char, altclasses_path); |
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2023 } |
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2024 |
| 0 | 2025 // Parse _JAVA_OPTIONS environment variable (if present) (mimics classic VM) |
| 2026 result = parse_java_options_environment_variable(&scp, &scp_assembly_required); | |
| 2027 if (result != JNI_OK) { | |
| 2028 return result; | |
| 2029 } | |
| 2030 | |
| 2031 // Do final processing now that all arguments have been parsed | |
| 2032 result = finalize_vm_init_args(&scp, scp_assembly_required); | |
| 2033 if (result != JNI_OK) { | |
| 2034 return result; | |
| 2035 } | |
| 2036 | |
| 2037 return JNI_OK; | |
| 2038 } | |
| 2039 | |
| 2040 jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args, | |
| 2041 SysClassPath* scp_p, | |
| 2042 bool* scp_assembly_required_p, | |
| 2043 FlagValueOrigin origin) { | |
| 2044 // Remaining part of option string | |
| 2045 const char* tail; | |
| 2046 | |
| 2047 // iterate over arguments | |
| 2048 for (int index = 0; index < args->nOptions; index++) { | |
| 2049 bool is_absolute_path = false; // for -agentpath vs -agentlib | |
| 2050 | |
| 2051 const JavaVMOption* option = args->options + index; | |
| 2052 | |
| 2053 if (!match_option(option, "-Djava.class.path", &tail) && | |
| 2054 !match_option(option, "-Dsun.java.command", &tail) && | |
| 2055 !match_option(option, "-Dsun.java.launcher", &tail)) { | |
| 2056 | |
| 2057 // add all jvm options to the jvm_args string. This string | |
| 2058 // is used later to set the java.vm.args PerfData string constant. | |
| 2059 // the -Djava.class.path and the -Dsun.java.command options are | |
| 2060 // omitted from jvm_args string as each have their own PerfData | |
| 2061 // string constant object. | |
| 2062 build_jvm_args(option->optionString); | |
| 2063 } | |
| 2064 | |
| 2065 // -verbose:[class/gc/jni] | |
| 2066 if (match_option(option, "-verbose", &tail)) { | |
| 2067 if (!strcmp(tail, ":class") || !strcmp(tail, "")) { | |
| 2068 FLAG_SET_CMDLINE(bool, TraceClassLoading, true); | |
| 2069 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
| 2070 } else if (!strcmp(tail, ":gc")) { | |
| 2071 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
| 2072 } else if (!strcmp(tail, ":jni")) { | |
| 2073 FLAG_SET_CMDLINE(bool, PrintJNIResolving, true); | |
| 2074 } | |
| 2075 // -da / -ea / -disableassertions / -enableassertions | |
| 2076 // These accept an optional class/package name separated by a colon, e.g., | |
| 2077 // -da:java.lang.Thread. | |
| 2078 } else if (match_option(option, user_assertion_options, &tail, true)) { | |
| 2079 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
| 2080 if (*tail == '\0') { | |
| 2081 JavaAssertions::setUserClassDefault(enable); | |
| 2082 } else { | |
| 2083 assert(*tail == ':', "bogus match by match_option()"); | |
| 2084 JavaAssertions::addOption(tail + 1, enable); | |
| 2085 } | |
| 2086 // -dsa / -esa / -disablesystemassertions / -enablesystemassertions | |
| 2087 } else if (match_option(option, system_assertion_options, &tail, false)) { | |
| 2088 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
| 2089 JavaAssertions::setSystemClassDefault(enable); | |
| 2090 // -bootclasspath: | |
| 2091 } else if (match_option(option, "-Xbootclasspath:", &tail)) { | |
| 2092 scp_p->reset_path(tail); | |
| 2093 *scp_assembly_required_p = true; | |
| 2094 // -bootclasspath/a: | |
| 2095 } else if (match_option(option, "-Xbootclasspath/a:", &tail)) { | |
| 2096 scp_p->add_suffix(tail); | |
| 2097 *scp_assembly_required_p = true; | |
| 2098 // -bootclasspath/p: | |
| 2099 } else if (match_option(option, "-Xbootclasspath/p:", &tail)) { | |
| 2100 scp_p->add_prefix(tail); | |
| 2101 *scp_assembly_required_p = true; | |
| 2102 // -Xrun | |
| 2103 } else if (match_option(option, "-Xrun", &tail)) { | |
|
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2104 if (tail != NULL) { |
| 0 | 2105 const char* pos = strchr(tail, ':'); |
| 2106 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
| 2107 char* name = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); | |
| 2108 name[len] = '\0'; | |
| 2109 | |
| 2110 char *options = NULL; | |
| 2111 if(pos != NULL) { | |
| 2112 size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied. | |
| 2113 options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2), pos+1, len2); | |
| 2114 } | |
| 2115 #ifdef JVMTI_KERNEL | |
| 2116 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
| 2117 warning("profiling and debugging agents are not supported with Kernel VM"); | |
| 2118 } else | |
| 2119 #endif // JVMTI_KERNEL | |
| 2120 add_init_library(name, options); | |
| 2121 } | |
| 2122 // -agentlib and -agentpath | |
| 2123 } else if (match_option(option, "-agentlib:", &tail) || | |
| 2124 (is_absolute_path = match_option(option, "-agentpath:", &tail))) { | |
| 2125 if(tail != NULL) { | |
| 2126 const char* pos = strchr(tail, '='); | |
| 2127 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
| 2128 char* name = strncpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); | |
| 2129 name[len] = '\0'; | |
| 2130 | |
| 2131 char *options = NULL; | |
| 2132 if(pos != NULL) { | |
| 2133 options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1), pos + 1); | |
| 2134 } | |
| 2135 #ifdef JVMTI_KERNEL | |
| 2136 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
| 2137 warning("profiling and debugging agents are not supported with Kernel VM"); | |
| 2138 } else | |
| 2139 #endif // JVMTI_KERNEL | |
| 2140 add_init_agent(name, options, is_absolute_path); | |
| 2141 | |
| 2142 } | |
| 2143 // -javaagent | |
| 2144 } else if (match_option(option, "-javaagent:", &tail)) { | |
| 2145 if(tail != NULL) { | |
| 2146 char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1), tail); | |
| 2147 add_init_agent("instrument", options, false); | |
| 2148 } | |
| 2149 // -Xnoclassgc | |
| 2150 } else if (match_option(option, "-Xnoclassgc", &tail)) { | |
| 2151 FLAG_SET_CMDLINE(bool, ClassUnloading, false); | |
| 2152 // -Xincgc: i-CMS | |
| 2153 } else if (match_option(option, "-Xincgc", &tail)) { | |
| 2154 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
| 2155 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, true); | |
| 2156 // -Xnoincgc: no i-CMS | |
| 2157 } else if (match_option(option, "-Xnoincgc", &tail)) { | |
| 2158 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
| 2159 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, false); | |
| 2160 // -Xconcgc | |
| 2161 } else if (match_option(option, "-Xconcgc", &tail)) { | |
| 2162 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
| 2163 // -Xnoconcgc | |
| 2164 } else if (match_option(option, "-Xnoconcgc", &tail)) { | |
| 2165 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
| 2166 // -Xbatch | |
| 2167 } else if (match_option(option, "-Xbatch", &tail)) { | |
| 2168 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
| 2169 // -Xmn for compatibility with other JVM vendors | |
| 2170 } else if (match_option(option, "-Xmn", &tail)) { | |
|
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2171 julong long_initial_eden_size = 0; |
| 0 | 2172 ArgsRange errcode = parse_memory_size(tail, &long_initial_eden_size, 1); |
| 2173 if (errcode != arg_in_range) { | |
| 2174 jio_fprintf(defaultStream::error_stream(), | |
| 2175 "Invalid initial eden size: %s\n", option->optionString); | |
| 2176 describe_range_error(errcode); | |
| 2177 return JNI_EINVAL; | |
| 2178 } | |
| 1064 | 2179 FLAG_SET_CMDLINE(uintx, MaxNewSize, (uintx)long_initial_eden_size); |
| 2180 FLAG_SET_CMDLINE(uintx, NewSize, (uintx)long_initial_eden_size); | |
| 0 | 2181 // -Xms |
| 2182 } else if (match_option(option, "-Xms", &tail)) { | |
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2183 julong long_initial_heap_size = 0; |
| 0 | 2184 ArgsRange errcode = parse_memory_size(tail, &long_initial_heap_size, 1); |
| 2185 if (errcode != arg_in_range) { | |
| 2186 jio_fprintf(defaultStream::error_stream(), | |
| 2187 "Invalid initial heap size: %s\n", option->optionString); | |
| 2188 describe_range_error(errcode); | |
| 2189 return JNI_EINVAL; | |
| 2190 } | |
| 1064 | 2191 FLAG_SET_CMDLINE(uintx, InitialHeapSize, (uintx)long_initial_heap_size); |
| 0 | 2192 // Currently the minimum size and the initial heap sizes are the same. |
| 1064 | 2193 set_min_heap_size(InitialHeapSize); |
| 0 | 2194 // -Xmx |
| 2195 } else if (match_option(option, "-Xmx", &tail)) { | |
|
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2196 julong long_max_heap_size = 0; |
| 0 | 2197 ArgsRange errcode = parse_memory_size(tail, &long_max_heap_size, 1); |
| 2198 if (errcode != arg_in_range) { | |
| 2199 jio_fprintf(defaultStream::error_stream(), | |
| 2200 "Invalid maximum heap size: %s\n", option->optionString); | |
| 2201 describe_range_error(errcode); | |
| 2202 return JNI_EINVAL; | |
| 2203 } | |
| 1064 | 2204 FLAG_SET_CMDLINE(uintx, MaxHeapSize, (uintx)long_max_heap_size); |
| 0 | 2205 // Xmaxf |
| 2206 } else if (match_option(option, "-Xmaxf", &tail)) { | |
| 2207 int maxf = (int)(atof(tail) * 100); | |
| 2208 if (maxf < 0 || maxf > 100) { | |
| 2209 jio_fprintf(defaultStream::error_stream(), | |
| 2210 "Bad max heap free percentage size: %s\n", | |
| 2211 option->optionString); | |
| 2212 return JNI_EINVAL; | |
| 2213 } else { | |
| 2214 FLAG_SET_CMDLINE(uintx, MaxHeapFreeRatio, maxf); | |
| 2215 } | |
| 2216 // Xminf | |
| 2217 } else if (match_option(option, "-Xminf", &tail)) { | |
| 2218 int minf = (int)(atof(tail) * 100); | |
| 2219 if (minf < 0 || minf > 100) { | |
| 2220 jio_fprintf(defaultStream::error_stream(), | |
| 2221 "Bad min heap free percentage size: %s\n", | |
| 2222 option->optionString); | |
| 2223 return JNI_EINVAL; | |
| 2224 } else { | |
| 2225 FLAG_SET_CMDLINE(uintx, MinHeapFreeRatio, minf); | |
| 2226 } | |
| 2227 // -Xss | |
| 2228 } else if (match_option(option, "-Xss", &tail)) { | |
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2229 julong long_ThreadStackSize = 0; |
| 0 | 2230 ArgsRange errcode = parse_memory_size(tail, &long_ThreadStackSize, 1000); |
| 2231 if (errcode != arg_in_range) { | |
| 2232 jio_fprintf(defaultStream::error_stream(), | |
| 2233 "Invalid thread stack size: %s\n", option->optionString); | |
| 2234 describe_range_error(errcode); | |
| 2235 return JNI_EINVAL; | |
| 2236 } | |
| 2237 // Internally track ThreadStackSize in units of 1024 bytes. | |
| 2238 FLAG_SET_CMDLINE(intx, ThreadStackSize, | |
| 2239 round_to((int)long_ThreadStackSize, K) / K); | |
| 2240 // -Xoss | |
| 2241 } else if (match_option(option, "-Xoss", &tail)) { | |
| 2242 // HotSpot does not have separate native and Java stacks, ignore silently for compatibility | |
| 2243 // -Xmaxjitcodesize | |
| 2244 } else if (match_option(option, "-Xmaxjitcodesize", &tail)) { | |
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2245 julong long_ReservedCodeCacheSize = 0; |
| 0 | 2246 ArgsRange errcode = parse_memory_size(tail, &long_ReservedCodeCacheSize, |
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2247 (size_t)InitialCodeCacheSize); |
| 0 | 2248 if (errcode != arg_in_range) { |
| 2249 jio_fprintf(defaultStream::error_stream(), | |
| 2250 "Invalid maximum code cache size: %s\n", | |
| 2251 option->optionString); | |
| 2252 describe_range_error(errcode); | |
| 2253 return JNI_EINVAL; | |
| 2254 } | |
| 2255 FLAG_SET_CMDLINE(uintx, ReservedCodeCacheSize, (uintx)long_ReservedCodeCacheSize); | |
| 2256 // -green | |
| 2257 } else if (match_option(option, "-green", &tail)) { | |
| 2258 jio_fprintf(defaultStream::error_stream(), | |
| 2259 "Green threads support not available\n"); | |
| 2260 return JNI_EINVAL; | |
| 2261 // -native | |
| 2262 } else if (match_option(option, "-native", &tail)) { | |
| 2263 // HotSpot always uses native threads, ignore silently for compatibility | |
| 2264 // -Xsqnopause | |
| 2265 } else if (match_option(option, "-Xsqnopause", &tail)) { | |
| 2266 // EVM option, ignore silently for compatibility | |
| 2267 // -Xrs | |
| 2268 } else if (match_option(option, "-Xrs", &tail)) { | |
| 2269 // Classic/EVM option, new functionality | |
| 2270 FLAG_SET_CMDLINE(bool, ReduceSignalUsage, true); | |
| 2271 } else if (match_option(option, "-Xusealtsigs", &tail)) { | |
| 2272 // change default internal VM signals used - lower case for back compat | |
| 2273 FLAG_SET_CMDLINE(bool, UseAltSigs, true); | |
| 2274 // -Xoptimize | |
| 2275 } else if (match_option(option, "-Xoptimize", &tail)) { | |
| 2276 // EVM option, ignore silently for compatibility | |
| 2277 // -Xprof | |
| 2278 } else if (match_option(option, "-Xprof", &tail)) { | |
| 2279 #ifndef FPROF_KERNEL | |
| 2280 _has_profile = true; | |
| 2281 #else // FPROF_KERNEL | |
| 2282 // do we have to exit? | |
| 2283 warning("Kernel VM does not support flat profiling."); | |
| 2284 #endif // FPROF_KERNEL | |
| 2285 // -Xaprof | |
| 2286 } else if (match_option(option, "-Xaprof", &tail)) { | |
| 2287 _has_alloc_profile = true; | |
| 2288 // -Xconcurrentio | |
| 2289 } else if (match_option(option, "-Xconcurrentio", &tail)) { | |
| 2290 FLAG_SET_CMDLINE(bool, UseLWPSynchronization, true); | |
| 2291 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
| 2292 FLAG_SET_CMDLINE(intx, DeferThrSuspendLoopCount, 1); | |
| 2293 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
| 2294 FLAG_SET_CMDLINE(uintx, NewSizeThreadIncrease, 16 * K); // 20Kb per thread added to new generation | |
| 2295 | |
| 2296 // -Xinternalversion | |
| 2297 } else if (match_option(option, "-Xinternalversion", &tail)) { | |
| 2298 jio_fprintf(defaultStream::output_stream(), "%s\n", | |
| 2299 VM_Version::internal_vm_info_string()); | |
| 2300 vm_exit(0); | |
| 2301 #ifndef PRODUCT | |
| 2302 // -Xprintflags | |
| 2303 } else if (match_option(option, "-Xprintflags", &tail)) { | |
| 2304 CommandLineFlags::printFlags(); | |
| 2305 vm_exit(0); | |
| 2306 #endif | |
| 2307 // -D | |
| 2308 } else if (match_option(option, "-D", &tail)) { | |
| 2309 if (!add_property(tail)) { | |
| 2310 return JNI_ENOMEM; | |
| 2311 } | |
| 2312 // Out of the box management support | |
| 2313 if (match_option(option, "-Dcom.sun.management", &tail)) { | |
| 2314 FLAG_SET_CMDLINE(bool, ManagementServer, true); | |
| 2315 } | |
| 2316 // -Xint | |
| 2317 } else if (match_option(option, "-Xint", &tail)) { | |
| 2318 set_mode_flags(_int); | |
| 2319 // -Xmixed | |
| 2320 } else if (match_option(option, "-Xmixed", &tail)) { | |
| 2321 set_mode_flags(_mixed); | |
| 2322 // -Xcomp | |
| 2323 } else if (match_option(option, "-Xcomp", &tail)) { | |
| 2324 // for testing the compiler; turn off all flags that inhibit compilation | |
| 2325 set_mode_flags(_comp); | |
| 2326 | |
| 2327 // -Xshare:dump | |
| 2328 } else if (match_option(option, "-Xshare:dump", &tail)) { | |
| 2329 #ifdef TIERED | |
| 2330 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
| 2331 set_mode_flags(_int); // Prevent compilation, which creates objects | |
| 2332 #elif defined(COMPILER2) | |
| 2333 vm_exit_during_initialization( | |
| 2334 "Dumping a shared archive is not supported on the Server JVM.", NULL); | |
| 2335 #elif defined(KERNEL) | |
| 2336 vm_exit_during_initialization( | |
| 2337 "Dumping a shared archive is not supported on the Kernel JVM.", NULL); | |
| 2338 #else | |
| 2339 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
| 2340 set_mode_flags(_int); // Prevent compilation, which creates objects | |
| 2341 #endif | |
| 2342 // -Xshare:on | |
| 2343 } else if (match_option(option, "-Xshare:on", &tail)) { | |
| 2344 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
| 2345 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, true); | |
| 2346 #ifdef TIERED | |
| 2347 FLAG_SET_CMDLINE(bool, ForceSharedSpaces, true); | |
| 2348 #endif // TIERED | |
| 2349 // -Xshare:auto | |
| 2350 } else if (match_option(option, "-Xshare:auto", &tail)) { | |
| 2351 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
| 2352 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
| 2353 // -Xshare:off | |
| 2354 } else if (match_option(option, "-Xshare:off", &tail)) { | |
| 2355 FLAG_SET_CMDLINE(bool, UseSharedSpaces, false); | |
| 2356 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
| 2357 | |
| 2358 // -Xverify | |
| 2359 } else if (match_option(option, "-Xverify", &tail)) { | |
| 2360 if (strcmp(tail, ":all") == 0 || strcmp(tail, "") == 0) { | |
| 2361 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, true); | |
| 2362 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
| 2363 } else if (strcmp(tail, ":remote") == 0) { | |
| 2364 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
| 2365 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
| 2366 } else if (strcmp(tail, ":none") == 0) { | |
| 2367 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
| 2368 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, false); | |
| 2369 } else if (is_bad_option(option, args->ignoreUnrecognized, "verification")) { | |
| 2370 return JNI_EINVAL; | |
| 2371 } | |
| 2372 // -Xdebug | |
| 2373 } else if (match_option(option, "-Xdebug", &tail)) { | |
| 2374 // note this flag has been used, then ignore | |
| 2375 set_xdebug_mode(true); | |
| 2376 // -Xnoagent | |
| 2377 } else if (match_option(option, "-Xnoagent", &tail)) { | |
| 2378 // For compatibility with classic. HotSpot refuses to load the old style agent.dll. | |
| 2379 } else if (match_option(option, "-Xboundthreads", &tail)) { | |
| 2380 // Bind user level threads to kernel threads (Solaris only) | |
| 2381 FLAG_SET_CMDLINE(bool, UseBoundThreads, true); | |
| 2382 } else if (match_option(option, "-Xloggc:", &tail)) { | |
| 2383 // Redirect GC output to the file. -Xloggc:<filename> | |
| 2384 // ostream_init_log(), when called will use this filename | |
| 2385 // to initialize a fileStream. | |
| 2386 _gc_log_filename = strdup(tail); | |
| 2387 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
| 2388 FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true); | |
| 2389 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
| 2390 | |
| 2391 // JNI hooks | |
| 2392 } else if (match_option(option, "-Xcheck", &tail)) { | |
| 2393 if (!strcmp(tail, ":jni")) { | |
| 2394 CheckJNICalls = true; | |
| 2395 } else if (is_bad_option(option, args->ignoreUnrecognized, | |
| 2396 "check")) { | |
| 2397 return JNI_EINVAL; | |
| 2398 } | |
| 2399 } else if (match_option(option, "vfprintf", &tail)) { | |
| 2400 _vfprintf_hook = CAST_TO_FN_PTR(vfprintf_hook_t, option->extraInfo); | |
| 2401 } else if (match_option(option, "exit", &tail)) { | |
| 2402 _exit_hook = CAST_TO_FN_PTR(exit_hook_t, option->extraInfo); | |
| 2403 } else if (match_option(option, "abort", &tail)) { | |
| 2404 _abort_hook = CAST_TO_FN_PTR(abort_hook_t, option->extraInfo); | |
| 2405 // -XX:+AggressiveHeap | |
| 2406 } else if (match_option(option, "-XX:+AggressiveHeap", &tail)) { | |
| 2407 | |
| 2408 // This option inspects the machine and attempts to set various | |
| 2409 // parameters to be optimal for long-running, memory allocation | |
| 2410 // intensive jobs. It is intended for machines with large | |
| 2411 // amounts of cpu and memory. | |
| 2412 | |
| 2413 // initHeapSize is needed since _initial_heap_size is 4 bytes on a 32 bit | |
| 2414 // VM, but we may not be able to represent the total physical memory | |
| 2415 // available (like having 8gb of memory on a box but using a 32bit VM). | |
| 2416 // Thus, we need to make sure we're using a julong for intermediate | |
| 2417 // calculations. | |
| 2418 julong initHeapSize; | |
| 2419 julong total_memory = os::physical_memory(); | |
| 2420 | |
| 2421 if (total_memory < (julong)256*M) { | |
| 2422 jio_fprintf(defaultStream::error_stream(), | |
| 2423 "You need at least 256mb of memory to use -XX:+AggressiveHeap\n"); | |
| 2424 vm_exit(1); | |
| 2425 } | |
| 2426 | |
| 2427 // The heap size is half of available memory, or (at most) | |
| 2428 // all of possible memory less 160mb (leaving room for the OS | |
| 2429 // when using ISM). This is the maximum; because adaptive sizing | |
| 2430 // is turned on below, the actual space used may be smaller. | |
| 2431 | |
| 2432 initHeapSize = MIN2(total_memory / (julong)2, | |
| 2433 total_memory - (julong)160*M); | |
| 2434 | |
| 2435 // Make sure that if we have a lot of memory we cap the 32 bit | |
| 2436 // process space. The 64bit VM version of this function is a nop. | |
| 2437 initHeapSize = os::allocatable_physical_memory(initHeapSize); | |
| 2438 | |
| 2439 // The perm gen is separate but contiguous with the | |
| 2440 // object heap (and is reserved with it) so subtract it | |
| 2441 // from the heap size. | |
| 2442 if (initHeapSize > MaxPermSize) { | |
| 2443 initHeapSize = initHeapSize - MaxPermSize; | |
| 2444 } else { | |
| 2445 warning("AggressiveHeap and MaxPermSize values may conflict"); | |
| 2446 } | |
| 2447 | |
| 2448 if (FLAG_IS_DEFAULT(MaxHeapSize)) { | |
| 2449 FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize); | |
| 1064 | 2450 FLAG_SET_CMDLINE(uintx, InitialHeapSize, initHeapSize); |
| 0 | 2451 // Currently the minimum size and the initial heap sizes are the same. |
| 1064 | 2452 set_min_heap_size(initHeapSize); |
| 0 | 2453 } |
| 2454 if (FLAG_IS_DEFAULT(NewSize)) { | |
| 2455 // Make the young generation 3/8ths of the total heap. | |
| 2456 FLAG_SET_CMDLINE(uintx, NewSize, | |
| 2457 ((julong)MaxHeapSize / (julong)8) * (julong)3); | |
| 2458 FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize); | |
| 2459 } | |
| 2460 | |
| 2461 FLAG_SET_DEFAULT(UseLargePages, true); | |
| 2462 | |
| 2463 // Increase some data structure sizes for efficiency | |
| 2464 FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize); | |
| 2465 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
| 2466 FLAG_SET_CMDLINE(uintx, TLABSize, 256*K); | |
| 2467 | |
| 2468 // See the OldPLABSize comment below, but replace 'after promotion' | |
| 2469 // with 'after copying'. YoungPLABSize is the size of the survivor | |
| 2470 // space per-gc-thread buffers. The default is 4kw. | |
| 2471 FLAG_SET_CMDLINE(uintx, YoungPLABSize, 256*K); // Note: this is in words | |
| 2472 | |
| 2473 // OldPLABSize is the size of the buffers in the old gen that | |
| 2474 // UseParallelGC uses to promote live data that doesn't fit in the | |
| 2475 // survivor spaces. At any given time, there's one for each gc thread. | |
| 2476 // The default size is 1kw. These buffers are rarely used, since the | |
| 2477 // survivor spaces are usually big enough. For specjbb, however, there | |
| 2478 // are occasions when there's lots of live data in the young gen | |
| 2479 // and we end up promoting some of it. We don't have a definite | |
| 2480 // explanation for why bumping OldPLABSize helps, but the theory | |
| 2481 // is that a bigger PLAB results in retaining something like the | |
| 2482 // original allocation order after promotion, which improves mutator | |
| 2483 // locality. A minor effect may be that larger PLABs reduce the | |
| 2484 // number of PLAB allocation events during gc. The value of 8kw | |
| 2485 // was arrived at by experimenting with specjbb. | |
| 2486 FLAG_SET_CMDLINE(uintx, OldPLABSize, 8*K); // Note: this is in words | |
| 2487 | |
| 2488 // CompilationPolicyChoice=0 causes the server compiler to adopt | |
| 2489 // a more conservative which-method-do-I-compile policy when one | |
| 2490 // of the counters maintained by the interpreter trips. The | |
| 2491 // result is reduced startup time and improved specjbb and | |
| 2492 // alacrity performance. Zero is the default, but we set it | |
| 2493 // explicitly here in case the default changes. | |
| 2494 // See runtime/compilationPolicy.*. | |
| 2495 FLAG_SET_CMDLINE(intx, CompilationPolicyChoice, 0); | |
| 2496 | |
| 2497 // Enable parallel GC and adaptive generation sizing | |
| 2498 FLAG_SET_CMDLINE(bool, UseParallelGC, true); | |
|
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2499 FLAG_SET_DEFAULT(ParallelGCThreads, |
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2500 Abstract_VM_Version::parallel_worker_threads()); |
| 0 | 2501 |
| 2502 // Encourage steady state memory management | |
| 2503 FLAG_SET_CMDLINE(uintx, ThresholdTolerance, 100); | |
| 2504 | |
| 2505 // This appears to improve mutator locality | |
| 2506 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
| 2507 | |
| 2508 // Get around early Solaris scheduling bug | |
| 2509 // (affinity vs other jobs on system) | |
| 2510 // but disallow DR and offlining (5008695). | |
| 2511 FLAG_SET_CMDLINE(bool, BindGCTaskThreadsToCPUs, true); | |
| 2512 | |
| 2513 } else if (match_option(option, "-XX:+NeverTenure", &tail)) { | |
| 2514 // The last option must always win. | |
| 2515 FLAG_SET_CMDLINE(bool, AlwaysTenure, false); | |
| 2516 FLAG_SET_CMDLINE(bool, NeverTenure, true); | |
| 2517 } else if (match_option(option, "-XX:+AlwaysTenure", &tail)) { | |
| 2518 // The last option must always win. | |
| 2519 FLAG_SET_CMDLINE(bool, NeverTenure, false); | |
| 2520 FLAG_SET_CMDLINE(bool, AlwaysTenure, true); | |
| 2521 } else if (match_option(option, "-XX:+CMSPermGenSweepingEnabled", &tail) || | |
| 2522 match_option(option, "-XX:-CMSPermGenSweepingEnabled", &tail)) { | |
| 2523 jio_fprintf(defaultStream::error_stream(), | |
| 2524 "Please use CMSClassUnloadingEnabled in place of " | |
| 2525 "CMSPermGenSweepingEnabled in the future\n"); | |
| 2526 } else if (match_option(option, "-XX:+UseGCTimeLimit", &tail)) { | |
| 2527 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, true); | |
| 2528 jio_fprintf(defaultStream::error_stream(), | |
| 2529 "Please use -XX:+UseGCOverheadLimit in place of " | |
| 2530 "-XX:+UseGCTimeLimit in the future\n"); | |
| 2531 } else if (match_option(option, "-XX:-UseGCTimeLimit", &tail)) { | |
| 2532 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, false); | |
| 2533 jio_fprintf(defaultStream::error_stream(), | |
| 2534 "Please use -XX:-UseGCOverheadLimit in place of " | |
| 2535 "-XX:-UseGCTimeLimit in the future\n"); | |
| 2536 // The TLE options are for compatibility with 1.3 and will be | |
| 2537 // removed without notice in a future release. These options | |
| 2538 // are not to be documented. | |
| 2539 } else if (match_option(option, "-XX:MaxTLERatio=", &tail)) { | |
| 2540 // No longer used. | |
| 2541 } else if (match_option(option, "-XX:+ResizeTLE", &tail)) { | |
| 2542 FLAG_SET_CMDLINE(bool, ResizeTLAB, true); | |
| 2543 } else if (match_option(option, "-XX:-ResizeTLE", &tail)) { | |
| 2544 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
| 2545 } else if (match_option(option, "-XX:+PrintTLE", &tail)) { | |
| 2546 FLAG_SET_CMDLINE(bool, PrintTLAB, true); | |
| 2547 } else if (match_option(option, "-XX:-PrintTLE", &tail)) { | |
| 2548 FLAG_SET_CMDLINE(bool, PrintTLAB, false); | |
| 2549 } else if (match_option(option, "-XX:TLEFragmentationRatio=", &tail)) { | |
| 2550 // No longer used. | |
| 2551 } else if (match_option(option, "-XX:TLESize=", &tail)) { | |
|
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2552 julong long_tlab_size = 0; |
| 0 | 2553 ArgsRange errcode = parse_memory_size(tail, &long_tlab_size, 1); |
| 2554 if (errcode != arg_in_range) { | |
| 2555 jio_fprintf(defaultStream::error_stream(), | |
| 2556 "Invalid TLAB size: %s\n", option->optionString); | |
| 2557 describe_range_error(errcode); | |
| 2558 return JNI_EINVAL; | |
| 2559 } | |
| 2560 FLAG_SET_CMDLINE(uintx, TLABSize, long_tlab_size); | |
| 2561 } else if (match_option(option, "-XX:TLEThreadRatio=", &tail)) { | |
| 2562 // No longer used. | |
| 2563 } else if (match_option(option, "-XX:+UseTLE", &tail)) { | |
| 2564 FLAG_SET_CMDLINE(bool, UseTLAB, true); | |
| 2565 } else if (match_option(option, "-XX:-UseTLE", &tail)) { | |
| 2566 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
| 2567 SOLARIS_ONLY( | |
| 2568 } else if (match_option(option, "-XX:+UsePermISM", &tail)) { | |
| 2569 warning("-XX:+UsePermISM is obsolete."); | |
| 2570 FLAG_SET_CMDLINE(bool, UseISM, true); | |
| 2571 } else if (match_option(option, "-XX:-UsePermISM", &tail)) { | |
| 2572 FLAG_SET_CMDLINE(bool, UseISM, false); | |
| 2573 ) | |
| 2574 } else if (match_option(option, "-XX:+DisplayVMOutputToStderr", &tail)) { | |
| 2575 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, false); | |
| 2576 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, true); | |
| 2577 } else if (match_option(option, "-XX:+DisplayVMOutputToStdout", &tail)) { | |
| 2578 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, false); | |
| 2579 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, true); | |
| 2580 } else if (match_option(option, "-XX:+ExtendedDTraceProbes", &tail)) { | |
| 2581 #ifdef SOLARIS | |
| 2582 FLAG_SET_CMDLINE(bool, ExtendedDTraceProbes, true); | |
| 2583 FLAG_SET_CMDLINE(bool, DTraceMethodProbes, true); | |
| 2584 FLAG_SET_CMDLINE(bool, DTraceAllocProbes, true); | |
| 2585 FLAG_SET_CMDLINE(bool, DTraceMonitorProbes, true); | |
| 2586 #else // ndef SOLARIS | |
| 2587 jio_fprintf(defaultStream::error_stream(), | |
| 2588 "ExtendedDTraceProbes flag is only applicable on Solaris\n"); | |
| 2589 return JNI_EINVAL; | |
| 2590 #endif // ndef SOLARIS | |
| 2591 #ifdef ASSERT | |
|
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2592 } else if (match_option(option, "-XX:+FullGCALot", &tail)) { |
| 0 | 2593 FLAG_SET_CMDLINE(bool, FullGCALot, true); |
| 2594 // disable scavenge before parallel mark-compact | |
| 2595 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
| 2596 #endif | |
|
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2597 } else if (match_option(option, "-XX:CMSParPromoteBlocksToClaim=", &tail)) { |
| 0 | 2598 julong cms_blocks_to_claim = (julong)atol(tail); |
| 2599 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); | |
| 2600 jio_fprintf(defaultStream::error_stream(), | |
|
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2601 "Please use -XX:OldPLABSize in place of " |
|
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2602 "-XX:CMSParPromoteBlocksToClaim in the future\n"); |
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|
2603 } else if (match_option(option, "-XX:ParCMSPromoteBlocksToClaim=", &tail)) { |
|
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|
2604 julong cms_blocks_to_claim = (julong)atol(tail); |
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|
2605 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); |
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|
2606 jio_fprintf(defaultStream::error_stream(), |
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|
2607 "Please use -XX:OldPLABSize in place of " |
| 0 | 2608 "-XX:ParCMSPromoteBlocksToClaim in the future\n"); |
|
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2609 } else if (match_option(option, "-XX:ParallelGCOldGenAllocBufferSize=", &tail)) { |
|
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|
2610 julong old_plab_size = 0; |
| 0 | 2611 ArgsRange errcode = parse_memory_size(tail, &old_plab_size, 1); |
| 2612 if (errcode != arg_in_range) { | |
| 2613 jio_fprintf(defaultStream::error_stream(), | |
| 2614 "Invalid old PLAB size: %s\n", option->optionString); | |
| 2615 describe_range_error(errcode); | |
| 2616 return JNI_EINVAL; | |
| 2617 } | |
|
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|
2618 FLAG_SET_CMDLINE(uintx, OldPLABSize, old_plab_size); |
| 0 | 2619 jio_fprintf(defaultStream::error_stream(), |
| 2620 "Please use -XX:OldPLABSize in place of " | |
| 2621 "-XX:ParallelGCOldGenAllocBufferSize in the future\n"); | |
|
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2622 } else if (match_option(option, "-XX:ParallelGCToSpaceAllocBufferSize=", &tail)) { |
|
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2623 julong young_plab_size = 0; |
| 0 | 2624 ArgsRange errcode = parse_memory_size(tail, &young_plab_size, 1); |
| 2625 if (errcode != arg_in_range) { | |
| 2626 jio_fprintf(defaultStream::error_stream(), | |
| 2627 "Invalid young PLAB size: %s\n", option->optionString); | |
| 2628 describe_range_error(errcode); | |
| 2629 return JNI_EINVAL; | |
| 2630 } | |
|
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|
2631 FLAG_SET_CMDLINE(uintx, YoungPLABSize, young_plab_size); |
| 0 | 2632 jio_fprintf(defaultStream::error_stream(), |
| 2633 "Please use -XX:YoungPLABSize in place of " | |
| 2634 "-XX:ParallelGCToSpaceAllocBufferSize in the future\n"); | |
| 1284 | 2635 } else if (match_option(option, "-XX:CMSMarkStackSize=", &tail) || |
| 2636 match_option(option, "-XX:G1MarkStackSize=", &tail)) { | |
| 2637 julong stack_size = 0; | |
| 2638 ArgsRange errcode = parse_memory_size(tail, &stack_size, 1); | |
| 2639 if (errcode != arg_in_range) { | |
| 2640 jio_fprintf(defaultStream::error_stream(), | |
| 2641 "Invalid mark stack size: %s\n", option->optionString); | |
| 2642 describe_range_error(errcode); | |
| 2643 return JNI_EINVAL; | |
| 2644 } | |
| 2645 FLAG_SET_CMDLINE(uintx, MarkStackSize, stack_size); | |
| 2646 } else if (match_option(option, "-XX:CMSMarkStackSizeMax=", &tail)) { | |
| 2647 julong max_stack_size = 0; | |
| 2648 ArgsRange errcode = parse_memory_size(tail, &max_stack_size, 1); | |
| 2649 if (errcode != arg_in_range) { | |
| 2650 jio_fprintf(defaultStream::error_stream(), | |
| 2651 "Invalid maximum mark stack size: %s\n", | |
| 2652 option->optionString); | |
| 2653 describe_range_error(errcode); | |
| 2654 return JNI_EINVAL; | |
| 2655 } | |
| 2656 FLAG_SET_CMDLINE(uintx, MarkStackSizeMax, max_stack_size); | |
| 2657 } else if (match_option(option, "-XX:ParallelMarkingThreads=", &tail) || | |
| 2658 match_option(option, "-XX:ParallelCMSThreads=", &tail)) { | |
| 2659 uintx conc_threads = 0; | |
| 2660 if (!parse_uintx(tail, &conc_threads, 1)) { | |
| 2661 jio_fprintf(defaultStream::error_stream(), | |
| 2662 "Invalid concurrent threads: %s\n", option->optionString); | |
| 2663 return JNI_EINVAL; | |
| 2664 } | |
| 2665 FLAG_SET_CMDLINE(uintx, ConcGCThreads, conc_threads); | |
|
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2666 } else if (match_option(option, "-XX:", &tail)) { // -XX:xxxx |
| 0 | 2667 // Skip -XX:Flags= since that case has already been handled |
| 2668 if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) { | |
| 2669 if (!process_argument(tail, args->ignoreUnrecognized, origin)) { | |
| 2670 return JNI_EINVAL; | |
| 2671 } | |
| 2672 } | |
| 2673 // Unknown option | |
| 2674 } else if (is_bad_option(option, args->ignoreUnrecognized)) { | |
| 2675 return JNI_ERR; | |
| 2676 } | |
| 2677 } | |
|
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2678 // Change the default value for flags which have different default values |
|
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2679 // when working with older JDKs. |
|
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2680 if (JDK_Version::current().compare_major(6) <= 0 && |
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2681 FLAG_IS_DEFAULT(UseVMInterruptibleIO)) { |
|
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2682 FLAG_SET_DEFAULT(UseVMInterruptibleIO, true); |
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2683 } |
|
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2684 #ifdef LINUX |
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2685 if (JDK_Version::current().compare_major(6) <= 0 && |
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2686 FLAG_IS_DEFAULT(UseLinuxPosixThreadCPUClocks)) { |
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2687 FLAG_SET_DEFAULT(UseLinuxPosixThreadCPUClocks, false); |
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2688 } |
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2689 #endif // LINUX |
| 0 | 2690 return JNI_OK; |
| 2691 } | |
| 2692 | |
| 2693 jint Arguments::finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required) { | |
| 2694 // This must be done after all -D arguments have been processed. | |
| 2695 scp_p->expand_endorsed(); | |
| 2696 | |
| 2697 if (scp_assembly_required || scp_p->get_endorsed() != NULL) { | |
| 2698 // Assemble the bootclasspath elements into the final path. | |
| 2699 Arguments::set_sysclasspath(scp_p->combined_path()); | |
| 2700 } | |
| 2701 | |
| 2702 // This must be done after all arguments have been processed. | |
| 2703 // java_compiler() true means set to "NONE" or empty. | |
| 2704 if (java_compiler() && !xdebug_mode()) { | |
| 2705 // For backwards compatibility, we switch to interpreted mode if | |
| 2706 // -Djava.compiler="NONE" or "" is specified AND "-Xdebug" was | |
| 2707 // not specified. | |
| 2708 set_mode_flags(_int); | |
| 2709 } | |
| 2710 if (CompileThreshold == 0) { | |
| 2711 set_mode_flags(_int); | |
| 2712 } | |
| 2713 | |
| 2714 #ifndef COMPILER2 | |
| 2715 // Don't degrade server performance for footprint | |
| 2716 if (FLAG_IS_DEFAULT(UseLargePages) && | |
| 2717 MaxHeapSize < LargePageHeapSizeThreshold) { | |
| 2718 // No need for large granularity pages w/small heaps. | |
| 2719 // Note that large pages are enabled/disabled for both the | |
| 2720 // Java heap and the code cache. | |
| 2721 FLAG_SET_DEFAULT(UseLargePages, false); | |
| 2722 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseMPSS, false)); | |
| 2723 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseISM, false)); | |
| 2724 } | |
|
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|
2725 |
|
1251
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1188
diff
changeset
|
2726 // Tiered compilation is undefined with C1. |
|
576e77447e3c
6923002: assert(false,"this call site should not be polymorphic")
kvn
parents:
1188
diff
changeset
|
2727 TieredCompilation = false; |
| 0 | 2728 #else |
| 2729 if (!FLAG_IS_DEFAULT(OptoLoopAlignment) && FLAG_IS_DEFAULT(MaxLoopPad)) { | |
| 2730 FLAG_SET_DEFAULT(MaxLoopPad, OptoLoopAlignment-1); | |
| 2731 } | |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
2732 // Temporary disable bulk zeroing reduction with G1. See CR 6627983. |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
2733 if (UseG1GC) { |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
2734 FLAG_SET_DEFAULT(ReduceBulkZeroing, false); |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
2735 } |
| 0 | 2736 #endif |
| 2737 | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2738 // 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
|
2739 // to be true unless the property has already been set. |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2740 // 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
|
2741 if (os::is_headless_jre()) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2742 const char* headless = Arguments::get_property("java.awt.headless"); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2743 if (headless == NULL) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2744 char envbuffer[128]; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2745 if (!os::getenv("JAVA_AWT_HEADLESS", envbuffer, sizeof(envbuffer))) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2746 if (!add_property("java.awt.headless=true")) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2747 return JNI_ENOMEM; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2748 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2749 } else { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2750 char buffer[256]; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2751 strcpy(buffer, "java.awt.headless="); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2752 strcat(buffer, envbuffer); |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2753 if (!add_property(buffer)) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2754 return JNI_ENOMEM; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2755 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2756 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2757 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2758 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
2759 |
| 0 | 2760 if (!check_vm_args_consistency()) { |
| 2761 return JNI_ERR; | |
| 2762 } | |
| 2763 | |
| 2764 return JNI_OK; | |
| 2765 } | |
| 2766 | |
| 2767 jint Arguments::parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2768 return parse_options_environment_variable("_JAVA_OPTIONS", scp_p, | |
| 2769 scp_assembly_required_p); | |
| 2770 } | |
| 2771 | |
| 2772 jint Arguments::parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2773 return parse_options_environment_variable("JAVA_TOOL_OPTIONS", scp_p, | |
| 2774 scp_assembly_required_p); | |
| 2775 } | |
| 2776 | |
| 2777 jint Arguments::parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2778 const int N_MAX_OPTIONS = 64; | |
| 2779 const int OPTION_BUFFER_SIZE = 1024; | |
| 2780 char buffer[OPTION_BUFFER_SIZE]; | |
| 2781 | |
| 2782 // The variable will be ignored if it exceeds the length of the buffer. | |
| 2783 // Don't check this variable if user has special privileges | |
| 2784 // (e.g. unix su command). | |
| 2785 if (os::getenv(name, buffer, sizeof(buffer)) && | |
| 2786 !os::have_special_privileges()) { | |
| 2787 JavaVMOption options[N_MAX_OPTIONS]; // Construct option array | |
| 2788 jio_fprintf(defaultStream::error_stream(), | |
| 2789 "Picked up %s: %s\n", name, buffer); | |
| 2790 char* rd = buffer; // pointer to the input string (rd) | |
| 2791 int i; | |
| 2792 for (i = 0; i < N_MAX_OPTIONS;) { // repeat for all options in the input string | |
| 2793 while (isspace(*rd)) rd++; // skip whitespace | |
| 2794 if (*rd == 0) break; // we re done when the input string is read completely | |
| 2795 | |
| 2796 // The output, option string, overwrites the input string. | |
| 2797 // Because of quoting, the pointer to the option string (wrt) may lag the pointer to | |
| 2798 // input string (rd). | |
| 2799 char* wrt = rd; | |
| 2800 | |
| 2801 options[i++].optionString = wrt; // Fill in option | |
| 2802 while (*rd != 0 && !isspace(*rd)) { // unquoted strings terminate with a space or NULL | |
| 2803 if (*rd == '\'' || *rd == '"') { // handle a quoted string | |
| 2804 int quote = *rd; // matching quote to look for | |
| 2805 rd++; // don't copy open quote | |
| 2806 while (*rd != quote) { // include everything (even spaces) up until quote | |
| 2807 if (*rd == 0) { // string termination means unmatched string | |
| 2808 jio_fprintf(defaultStream::error_stream(), | |
| 2809 "Unmatched quote in %s\n", name); | |
| 2810 return JNI_ERR; | |
| 2811 } | |
| 2812 *wrt++ = *rd++; // copy to option string | |
| 2813 } | |
| 2814 rd++; // don't copy close quote | |
| 2815 } else { | |
| 2816 *wrt++ = *rd++; // copy to option string | |
| 2817 } | |
| 2818 } | |
| 2819 // Need to check if we're done before writing a NULL, | |
| 2820 // because the write could be to the byte that rd is pointing to. | |
| 2821 if (*rd++ == 0) { | |
| 2822 *wrt = 0; | |
| 2823 break; | |
| 2824 } | |
| 2825 *wrt = 0; // Zero terminate option | |
| 2826 } | |
| 2827 // Construct JavaVMInitArgs structure and parse as if it was part of the command line | |
| 2828 JavaVMInitArgs vm_args; | |
| 2829 vm_args.version = JNI_VERSION_1_2; | |
| 2830 vm_args.options = options; | |
| 2831 vm_args.nOptions = i; | |
| 564 | 2832 vm_args.ignoreUnrecognized = IgnoreUnrecognizedVMOptions; |
| 0 | 2833 |
| 2834 if (PrintVMOptions) { | |
| 2835 const char* tail; | |
| 2836 for (int i = 0; i < vm_args.nOptions; i++) { | |
| 2837 const JavaVMOption *option = vm_args.options + i; | |
| 2838 if (match_option(option, "-XX:", &tail)) { | |
| 2839 logOption(tail); | |
| 2840 } | |
| 2841 } | |
| 2842 } | |
| 2843 | |
| 2844 return(parse_each_vm_init_arg(&vm_args, scp_p, scp_assembly_required_p, ENVIRON_VAR)); | |
| 2845 } | |
| 2846 return JNI_OK; | |
| 2847 } | |
| 2848 | |
| 2849 // Parse entry point called from JNI_CreateJavaVM | |
| 2850 | |
| 2851 jint Arguments::parse(const JavaVMInitArgs* args) { | |
| 2852 | |
| 2853 // Sharing support | |
| 2854 // Construct the path to the archive | |
| 2855 char jvm_path[JVM_MAXPATHLEN]; | |
| 2856 os::jvm_path(jvm_path, sizeof(jvm_path)); | |
| 2857 #ifdef TIERED | |
| 2858 if (strstr(jvm_path, "client") != NULL) { | |
| 2859 force_client_mode = true; | |
| 2860 } | |
| 2861 #endif // TIERED | |
| 2862 char *end = strrchr(jvm_path, *os::file_separator()); | |
| 2863 if (end != NULL) *end = '\0'; | |
| 2864 char *shared_archive_path = NEW_C_HEAP_ARRAY(char, strlen(jvm_path) + | |
| 2865 strlen(os::file_separator()) + 20); | |
| 2866 if (shared_archive_path == NULL) return JNI_ENOMEM; | |
| 2867 strcpy(shared_archive_path, jvm_path); | |
| 2868 strcat(shared_archive_path, os::file_separator()); | |
| 2869 strcat(shared_archive_path, "classes"); | |
| 2870 DEBUG_ONLY(strcat(shared_archive_path, "_g");) | |
| 2871 strcat(shared_archive_path, ".jsa"); | |
| 2872 SharedArchivePath = shared_archive_path; | |
| 2873 | |
| 2874 // Remaining part of option string | |
| 2875 const char* tail; | |
| 2876 | |
| 2877 // If flag "-XX:Flags=flags-file" is used it will be the first option to be processed. | |
| 2878 bool settings_file_specified = false; | |
| 564 | 2879 const char* flags_file; |
| 0 | 2880 int index; |
| 2881 for (index = 0; index < args->nOptions; index++) { | |
| 2882 const JavaVMOption *option = args->options + index; | |
| 2883 if (match_option(option, "-XX:Flags=", &tail)) { | |
| 564 | 2884 flags_file = tail; |
| 0 | 2885 settings_file_specified = true; |
| 2886 } | |
| 2887 if (match_option(option, "-XX:+PrintVMOptions", &tail)) { | |
| 2888 PrintVMOptions = true; | |
| 2889 } | |
|
253
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
2890 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
|
2891 PrintVMOptions = false; |
|
b0fe4deeb9fb
6726999: nsk/stress/jck12a/jck12a010 assert(n != null,"Bad immediate dominator info.")
kvn
parents:
196
diff
changeset
|
2892 } |
| 564 | 2893 if (match_option(option, "-XX:+IgnoreUnrecognizedVMOptions", &tail)) { |
| 2894 IgnoreUnrecognizedVMOptions = true; | |
| 2895 } | |
| 2896 if (match_option(option, "-XX:-IgnoreUnrecognizedVMOptions", &tail)) { | |
| 2897 IgnoreUnrecognizedVMOptions = false; | |
| 2898 } | |
| 1150 | 2899 if (match_option(option, "-XX:+PrintFlagsInitial", &tail)) { |
| 2900 CommandLineFlags::printFlags(); | |
| 2901 vm_exit(0); | |
| 2902 } | |
|
1768
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2903 |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2904 #ifndef PRODUCT |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2905 if (match_option(option, "-XX:+PrintFlagsWithComments", &tail)) { |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2906 CommandLineFlags::printFlags(true); |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2907 vm_exit(0); |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2908 } |
|
6ee479178066
6979444: add command line option to print command line flags descriptions
ikrylov
parents:
1745
diff
changeset
|
2909 #endif |
| 564 | 2910 } |
| 2911 | |
| 2912 if (IgnoreUnrecognizedVMOptions) { | |
| 2913 // uncast const to modify the flag args->ignoreUnrecognized | |
| 2914 *(jboolean*)(&args->ignoreUnrecognized) = true; | |
| 2915 } | |
| 2916 | |
| 2917 // Parse specified settings file | |
| 2918 if (settings_file_specified) { | |
| 2919 if (!process_settings_file(flags_file, true, args->ignoreUnrecognized)) { | |
| 2920 return JNI_EINVAL; | |
| 2921 } | |
| 0 | 2922 } |
| 2923 | |
| 2924 // Parse default .hotspotrc settings file | |
| 2925 if (!settings_file_specified) { | |
| 2926 if (!process_settings_file(".hotspotrc", false, args->ignoreUnrecognized)) { | |
| 2927 return JNI_EINVAL; | |
| 2928 } | |
| 2929 } | |
| 2930 | |
| 2931 if (PrintVMOptions) { | |
| 2932 for (index = 0; index < args->nOptions; index++) { | |
| 2933 const JavaVMOption *option = args->options + index; | |
| 2934 if (match_option(option, "-XX:", &tail)) { | |
| 2935 logOption(tail); | |
| 2936 } | |
| 2937 } | |
| 2938 } | |
| 2939 | |
| 2940 // Parse JavaVMInitArgs structure passed in, as well as JAVA_TOOL_OPTIONS and _JAVA_OPTIONS | |
| 2941 jint result = parse_vm_init_args(args); | |
| 2942 if (result != JNI_OK) { | |
| 2943 return result; | |
| 2944 } | |
| 2945 | |
| 2946 #ifndef PRODUCT | |
| 2947 if (TraceBytecodesAt != 0) { | |
| 2948 TraceBytecodes = true; | |
| 2949 } | |
| 2950 if (CountCompiledCalls) { | |
| 2951 if (UseCounterDecay) { | |
| 2952 warning("UseCounterDecay disabled because CountCalls is set"); | |
| 2953 UseCounterDecay = false; | |
| 2954 } | |
| 2955 } | |
| 2956 #endif // PRODUCT | |
| 2957 | |
|
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
2958 if (EnableInvokeDynamic && !EnableMethodHandles) { |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
2959 if (!FLAG_IS_DEFAULT(EnableMethodHandles)) { |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
2960 warning("forcing EnableMethodHandles true because EnableInvokeDynamic is true"); |
|
726
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
2961 } |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
2962 EnableMethodHandles = true; |
|
be93aad57795
6655646: dynamic languages need dynamically linked call sites
jrose
parents:
712
diff
changeset
|
2963 } |
| 710 | 2964 if (EnableMethodHandles && !AnonymousClasses) { |
| 2965 if (!FLAG_IS_DEFAULT(AnonymousClasses)) { | |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
2966 warning("forcing AnonymousClasses true because EnableMethodHandles is true"); |
| 710 | 2967 } |
| 2968 AnonymousClasses = true; | |
| 2969 } | |
|
989
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
2970 if ((EnableMethodHandles || AnonymousClasses) && ScavengeRootsInCode == 0) { |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
2971 if (!FLAG_IS_DEFAULT(ScavengeRootsInCode)) { |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
2972 warning("forcing ScavengeRootsInCode non-zero because EnableMethodHandles or AnonymousClasses is true"); |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
2973 } |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
2974 ScavengeRootsInCode = 1; |
|
148e5441d916
6863023: need non-perm oops in code cache for JSR 292
jrose
parents:
932
diff
changeset
|
2975 } |
|
1135
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
2976 #ifdef COMPILER2 |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
2977 if (EnableInvokeDynamic && DoEscapeAnalysis) { |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
2978 // TODO: We need to find rules for invokedynamic and EA. For now, |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
2979 // simply disable EA by default. |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
2980 if (FLAG_IS_DEFAULT(DoEscapeAnalysis)) { |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
2981 DoEscapeAnalysis = false; |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
2982 } |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
2983 } |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
2984 #endif |
| 710 | 2985 |
| 0 | 2986 if (PrintGCDetails) { |
| 2987 // Turn on -verbose:gc options as well | |
| 2988 PrintGC = true; | |
| 2989 } | |
| 2990 | |
| 1783 | 2991 #if defined(_LP64) && defined(COMPILER1) && !defined(TIERED) |
| 1060 | 2992 UseCompressedOops = false; |
| 2993 #endif | |
| 2994 | |
| 1875 | 2995 #if defined(_LP64) |
| 2996 if ((DumpSharedSpaces || RequireSharedSpaces) && UseCompressedOops) { | |
| 2997 // Disable compressed oops with shared spaces | |
| 2998 UseCompressedOops = false; | |
| 2999 } | |
| 3000 #endif | |
| 3001 | |
|
1571
2d127394260e
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
kvn
parents:
1506
diff
changeset
|
3002 // 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
|
3003 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
|
3004 |
| 0 | 3005 #ifdef SERIALGC |
| 1064 | 3006 force_serial_gc(); |
| 0 | 3007 #endif // SERIALGC |
| 3008 #ifdef KERNEL | |
| 3009 no_shared_spaces(); | |
| 3010 #endif // KERNEL | |
| 3011 | |
| 3012 // Set flags based on ergonomics. | |
| 3013 set_ergonomics_flags(); | |
| 3014 | |
|
1135
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3015 #ifdef _LP64 |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3016 // XXX JSR 292 currently does not support compressed oops. |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3017 if (EnableMethodHandles && UseCompressedOops) { |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3018 if (FLAG_IS_DEFAULT(UseCompressedOops) || FLAG_IS_ERGO(UseCompressedOops)) { |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3019 UseCompressedOops = false; |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3020 } |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3021 } |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3022 #endif // _LP64 |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
1131
diff
changeset
|
3023 |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3024 // Check the GC selections again. |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3025 if (!check_gc_consistency()) { |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3026 return JNI_EINVAL; |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3027 } |
|
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3028 |
| 1783 | 3029 if (TieredCompilation) { |
| 3030 set_tiered_flags(); | |
| 3031 } else { | |
| 3032 // Check if the policy is valid. Policies 0 and 1 are valid for non-tiered setup. | |
| 3033 if (CompilationPolicyChoice >= 2) { | |
| 3034 vm_exit_during_initialization( | |
| 3035 "Incompatible compilation policy selected", NULL); | |
| 3036 } | |
| 3037 } | |
| 3038 | |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
3039 #ifndef KERNEL |
| 1064 | 3040 if (UseConcMarkSweepGC) { |
| 3041 // Set flags for CMS and ParNew. Check UseConcMarkSweep first | |
| 3042 // to ensure that when both UseConcMarkSweepGC and UseParNewGC | |
| 3043 // are true, we don't call set_parnew_gc_flags() as well. | |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3044 set_cms_and_parnew_gc_flags(); |
| 1064 | 3045 } else { |
| 3046 // Set heap size based on available physical memory | |
| 3047 set_heap_size(); | |
| 3048 // Set per-collector flags | |
| 3049 if (UseParallelGC || UseParallelOldGC) { | |
| 3050 set_parallel_gc_flags(); | |
| 3051 } else if (UseParNewGC) { | |
| 3052 set_parnew_gc_flags(); | |
| 3053 } else if (UseG1GC) { | |
| 3054 set_g1_gc_flags(); | |
| 3055 } | |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
135
diff
changeset
|
3056 } |
|
1145
e018e6884bd8
6631166: CMS: better heuristics when combatting fragmentation
ysr
parents:
1074
diff
changeset
|
3057 #endif // KERNEL |
|
10
28372612af5e
6362677: Change parallel GC collector default number of parallel GC threads.
jmasa
parents:
0
diff
changeset
|
3058 |
| 0 | 3059 #ifdef SERIALGC |
| 3060 assert(verify_serial_gc_flags(), "SerialGC unset"); | |
| 3061 #endif // SERIALGC | |
| 3062 | |
| 3063 // Set bytecode rewriting flags | |
| 3064 set_bytecode_flags(); | |
| 3065 | |
| 3066 // Set flags if Aggressive optimization flags (-XX:+AggressiveOpts) enabled. | |
| 3067 set_aggressive_opts_flags(); | |
| 3068 | |
| 3069 #ifdef CC_INTERP | |
| 1131 | 3070 // Clear flags not supported by the C++ interpreter |
| 3071 FLAG_SET_DEFAULT(ProfileInterpreter, false); | |
| 0 | 3072 FLAG_SET_DEFAULT(UseBiasedLocking, false); |
| 1131 | 3073 LP64_ONLY(FLAG_SET_DEFAULT(UseCompressedOops, false)); |
| 3074 #endif // CC_INTERP | |
| 3075 | |
|
420
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3076 #ifdef COMPILER2 |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3077 if (!UseBiasedLocking || EmitSync != 0) { |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3078 UseOptoBiasInlining = false; |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3079 } |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3080 #endif |
|
a1980da045cc
6462850: generate biased locking code in C2 ideal graph
kvn
parents:
416
diff
changeset
|
3081 |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3082 if (PrintAssembly && FLAG_IS_DEFAULT(DebugNonSafepoints)) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3083 warning("PrintAssembly is enabled; turning on DebugNonSafepoints to gain additional output"); |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3084 DebugNonSafepoints = true; |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3085 } |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1150
diff
changeset
|
3086 |
|
1188
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3087 #ifndef PRODUCT |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3088 if (CompileTheWorld) { |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3089 // 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
|
3090 if (FLAG_IS_DEFAULT(NmethodSweepFraction)) { |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3091 NmethodSweepFraction = 1; |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3092 } |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3093 } |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3094 #endif |
|
99af867dfa05
6919886: Sweep CodeCache more aggressively to reduce its usage for CompileTheWorld
kvn
parents:
1161
diff
changeset
|
3095 |
| 0 | 3096 if (PrintCommandLineFlags) { |
| 3097 CommandLineFlags::printSetFlags(); | |
| 3098 } | |
| 3099 | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3100 // Apply CPU specific policy for the BiasedLocking |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3101 if (UseBiasedLocking) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3102 if (!VM_Version::use_biased_locking() && |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3103 !(FLAG_IS_CMDLINE(UseBiasedLocking))) { |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3104 UseBiasedLocking = false; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3105 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3106 } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1679
diff
changeset
|
3107 |
| 0 | 3108 return JNI_OK; |
| 3109 } | |
| 3110 | |
| 3111 int Arguments::PropertyList_count(SystemProperty* pl) { | |
| 3112 int count = 0; | |
| 3113 while(pl != NULL) { | |
| 3114 count++; | |
| 3115 pl = pl->next(); | |
| 3116 } | |
| 3117 return count; | |
| 3118 } | |
| 3119 | |
| 3120 const char* Arguments::PropertyList_get_value(SystemProperty *pl, const char* key) { | |
| 3121 assert(key != NULL, "just checking"); | |
| 3122 SystemProperty* prop; | |
| 3123 for (prop = pl; prop != NULL; prop = prop->next()) { | |
| 3124 if (strcmp(key, prop->key()) == 0) return prop->value(); | |
| 3125 } | |
| 3126 return NULL; | |
| 3127 } | |
| 3128 | |
| 3129 const char* Arguments::PropertyList_get_key_at(SystemProperty *pl, int index) { | |
| 3130 int count = 0; | |
| 3131 const char* ret_val = NULL; | |
| 3132 | |
| 3133 while(pl != NULL) { | |
| 3134 if(count >= index) { | |
| 3135 ret_val = pl->key(); | |
| 3136 break; | |
| 3137 } | |
| 3138 count++; | |
| 3139 pl = pl->next(); | |
| 3140 } | |
| 3141 | |
| 3142 return ret_val; | |
| 3143 } | |
| 3144 | |
| 3145 char* Arguments::PropertyList_get_value_at(SystemProperty* pl, int index) { | |
| 3146 int count = 0; | |
| 3147 char* ret_val = NULL; | |
| 3148 | |
| 3149 while(pl != NULL) { | |
| 3150 if(count >= index) { | |
| 3151 ret_val = pl->value(); | |
| 3152 break; | |
| 3153 } | |
| 3154 count++; | |
| 3155 pl = pl->next(); | |
| 3156 } | |
| 3157 | |
| 3158 return ret_val; | |
| 3159 } | |
| 3160 | |
| 3161 void Arguments::PropertyList_add(SystemProperty** plist, SystemProperty *new_p) { | |
| 3162 SystemProperty* p = *plist; | |
| 3163 if (p == NULL) { | |
| 3164 *plist = new_p; | |
| 3165 } else { | |
| 3166 while (p->next() != NULL) { | |
| 3167 p = p->next(); | |
| 3168 } | |
| 3169 p->set_next(new_p); | |
| 3170 } | |
| 3171 } | |
| 3172 | |
| 3173 void Arguments::PropertyList_add(SystemProperty** plist, const char* k, char* v) { | |
| 3174 if (plist == NULL) | |
| 3175 return; | |
| 3176 | |
| 3177 SystemProperty* new_p = new SystemProperty(k, v, true); | |
| 3178 PropertyList_add(plist, new_p); | |
| 3179 } | |
| 3180 | |
| 3181 // This add maintains unique property key in the list. | |
| 691 | 3182 void Arguments::PropertyList_unique_add(SystemProperty** plist, const char* k, char* v, jboolean append) { |
| 0 | 3183 if (plist == NULL) |
| 3184 return; | |
| 3185 | |
| 3186 // If property key exist then update with new value. | |
| 3187 SystemProperty* prop; | |
| 3188 for (prop = *plist; prop != NULL; prop = prop->next()) { | |
| 3189 if (strcmp(k, prop->key()) == 0) { | |
| 691 | 3190 if (append) { |
| 3191 prop->append_value(v); | |
| 3192 } else { | |
| 3193 prop->set_value(v); | |
| 3194 } | |
| 0 | 3195 return; |
| 3196 } | |
| 3197 } | |
| 3198 | |
| 3199 PropertyList_add(plist, k, v); | |
| 3200 } | |
| 3201 | |
| 3202 #ifdef KERNEL | |
| 3203 char *Arguments::get_kernel_properties() { | |
| 3204 // Find properties starting with kernel and append them to string | |
| 3205 // We need to find out how long they are first because the URL's that they | |
| 3206 // might point to could get long. | |
| 3207 int length = 0; | |
| 3208 SystemProperty* prop; | |
| 3209 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
| 3210 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
| 3211 length += (strlen(prop->key()) + strlen(prop->value()) + 5); // "-D =" | |
| 3212 } | |
| 3213 } | |
| 3214 // Add one for null terminator. | |
| 3215 char *props = AllocateHeap(length + 1, "get_kernel_properties"); | |
| 3216 if (length != 0) { | |
| 3217 int pos = 0; | |
| 3218 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
| 3219 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
| 3220 jio_snprintf(&props[pos], length-pos, | |
| 3221 "-D%s=%s ", prop->key(), prop->value()); | |
| 3222 pos = strlen(props); | |
| 3223 } | |
| 3224 } | |
| 3225 } | |
| 3226 // null terminate props in case of null | |
| 3227 props[length] = '\0'; | |
| 3228 return props; | |
| 3229 } | |
| 3230 #endif // KERNEL | |
| 3231 | |
| 3232 // Copies src into buf, replacing "%%" with "%" and "%p" with pid | |
| 3233 // Returns true if all of the source pointed by src has been copied over to | |
| 3234 // the destination buffer pointed by buf. Otherwise, returns false. | |
| 3235 // Notes: | |
| 3236 // 1. If the length (buflen) of the destination buffer excluding the | |
| 3237 // NULL terminator character is not long enough for holding the expanded | |
| 3238 // pid characters, it also returns false instead of returning the partially | |
| 3239 // expanded one. | |
| 3240 // 2. The passed in "buflen" should be large enough to hold the null terminator. | |
| 3241 bool Arguments::copy_expand_pid(const char* src, size_t srclen, | |
| 3242 char* buf, size_t buflen) { | |
| 3243 const char* p = src; | |
| 3244 char* b = buf; | |
| 3245 const char* src_end = &src[srclen]; | |
| 3246 char* buf_end = &buf[buflen - 1]; | |
| 3247 | |
| 3248 while (p < src_end && b < buf_end) { | |
| 3249 if (*p == '%') { | |
| 3250 switch (*(++p)) { | |
| 3251 case '%': // "%%" ==> "%" | |
| 3252 *b++ = *p++; | |
| 3253 break; | |
| 3254 case 'p': { // "%p" ==> current process id | |
| 3255 // buf_end points to the character before the last character so | |
| 3256 // that we could write '\0' to the end of the buffer. | |
| 3257 size_t buf_sz = buf_end - b + 1; | |
| 3258 int ret = jio_snprintf(b, buf_sz, "%d", os::current_process_id()); | |
| 3259 | |
| 3260 // if jio_snprintf fails or the buffer is not long enough to hold | |
| 3261 // the expanded pid, returns false. | |
| 3262 if (ret < 0 || ret >= (int)buf_sz) { | |
| 3263 return false; | |
| 3264 } else { | |
| 3265 b += ret; | |
| 3266 assert(*b == '\0', "fail in copy_expand_pid"); | |
| 3267 if (p == src_end && b == buf_end + 1) { | |
| 3268 // reach the end of the buffer. | |
| 3269 return true; | |
| 3270 } | |
| 3271 } | |
| 3272 p++; | |
| 3273 break; | |
| 3274 } | |
| 3275 default : | |
| 3276 *b++ = '%'; | |
| 3277 } | |
| 3278 } else { | |
| 3279 *b++ = *p++; | |
| 3280 } | |
| 3281 } | |
| 3282 *b = '\0'; | |
| 3283 return (p == src_end); // return false if not all of the source was copied | |
| 3284 } |