Mercurial > hg > truffle
annotate src/share/vm/runtime/arguments.cpp @ 570:dca06e7f503d
Merge
| author | kvn |
|---|---|
| date | Tue, 17 Feb 2009 14:30:24 -0800 |
| parents | 40ee984935b9 323728917cf4 |
| children | 0fbdb4381b99 660978a2a31a |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 196 | 2 * Copyright 1997-2008 Sun Microsystems, Inc. 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 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 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::_initial_heap_size = 0; | |
| 41 uintx Arguments::_min_heap_size = 0; | |
| 42 Arguments::Mode Arguments::_mode = _mixed; | |
| 43 bool Arguments::_java_compiler = false; | |
| 44 bool Arguments::_xdebug_mode = false; | |
| 45 const char* Arguments::_java_vendor_url_bug = DEFAULT_VENDOR_URL_BUG; | |
| 46 const char* Arguments::_sun_java_launcher = DEFAULT_JAVA_LAUNCHER; | |
| 47 int Arguments::_sun_java_launcher_pid = -1; | |
| 48 | |
| 49 // These parameters are reset in method parse_vm_init_args(JavaVMInitArgs*) | |
| 50 bool Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
| 51 bool Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
| 52 bool Arguments::_BackgroundCompilation = BackgroundCompilation; | |
| 53 bool Arguments::_ClipInlining = ClipInlining; | |
| 54 intx Arguments::_Tier2CompileThreshold = Tier2CompileThreshold; | |
| 55 | |
| 56 char* Arguments::SharedArchivePath = NULL; | |
| 57 | |
| 58 AgentLibraryList Arguments::_libraryList; | |
| 59 AgentLibraryList Arguments::_agentList; | |
| 60 | |
| 61 abort_hook_t Arguments::_abort_hook = NULL; | |
| 62 exit_hook_t Arguments::_exit_hook = NULL; | |
| 63 vfprintf_hook_t Arguments::_vfprintf_hook = NULL; | |
| 64 | |
| 65 | |
| 66 SystemProperty *Arguments::_java_ext_dirs = NULL; | |
| 67 SystemProperty *Arguments::_java_endorsed_dirs = NULL; | |
| 68 SystemProperty *Arguments::_sun_boot_library_path = NULL; | |
| 69 SystemProperty *Arguments::_java_library_path = NULL; | |
| 70 SystemProperty *Arguments::_java_home = NULL; | |
| 71 SystemProperty *Arguments::_java_class_path = NULL; | |
| 72 SystemProperty *Arguments::_sun_boot_class_path = NULL; | |
| 73 | |
| 74 char* Arguments::_meta_index_path = NULL; | |
| 75 char* Arguments::_meta_index_dir = NULL; | |
| 76 | |
| 77 static bool force_client_mode = false; | |
| 78 | |
| 79 // Check if head of 'option' matches 'name', and sets 'tail' remaining part of option string | |
| 80 | |
| 81 static bool match_option(const JavaVMOption *option, const char* name, | |
| 82 const char** tail) { | |
| 83 int len = (int)strlen(name); | |
| 84 if (strncmp(option->optionString, name, len) == 0) { | |
| 85 *tail = option->optionString + len; | |
| 86 return true; | |
| 87 } else { | |
| 88 return false; | |
| 89 } | |
| 90 } | |
| 91 | |
| 92 static void logOption(const char* opt) { | |
| 93 if (PrintVMOptions) { | |
| 94 jio_fprintf(defaultStream::output_stream(), "VM option '%s'\n", opt); | |
| 95 } | |
| 96 } | |
| 97 | |
| 98 // Process java launcher properties. | |
| 99 void Arguments::process_sun_java_launcher_properties(JavaVMInitArgs* args) { | |
| 100 // See if sun.java.launcher or sun.java.launcher.pid is defined. | |
| 101 // Must do this before setting up other system properties, | |
| 102 // as some of them may depend on launcher type. | |
| 103 for (int index = 0; index < args->nOptions; index++) { | |
| 104 const JavaVMOption* option = args->options + index; | |
| 105 const char* tail; | |
| 106 | |
| 107 if (match_option(option, "-Dsun.java.launcher=", &tail)) { | |
| 108 process_java_launcher_argument(tail, option->extraInfo); | |
| 109 continue; | |
| 110 } | |
| 111 if (match_option(option, "-Dsun.java.launcher.pid=", &tail)) { | |
| 112 _sun_java_launcher_pid = atoi(tail); | |
| 113 continue; | |
| 114 } | |
| 115 } | |
| 116 } | |
| 117 | |
| 118 // Initialize system properties key and value. | |
| 119 void Arguments::init_system_properties() { | |
| 120 | |
| 121 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.version", "1.0", false)); | |
| 122 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.name", | |
| 123 "Java Virtual Machine Specification", false)); | |
| 124 PropertyList_add(&_system_properties, new SystemProperty("java.vm.specification.vendor", | |
| 125 "Sun Microsystems Inc.", false)); | |
| 126 PropertyList_add(&_system_properties, new SystemProperty("java.vm.version", VM_Version::vm_release(), false)); | |
| 127 PropertyList_add(&_system_properties, new SystemProperty("java.vm.name", VM_Version::vm_name(), false)); | |
| 128 PropertyList_add(&_system_properties, new SystemProperty("java.vm.vendor", VM_Version::vm_vendor(), false)); | |
| 129 PropertyList_add(&_system_properties, new SystemProperty("java.vm.info", VM_Version::vm_info_string(), true)); | |
| 130 | |
| 131 // following are JVMTI agent writeable properties. | |
| 132 // Properties values are set to NULL and they are | |
| 133 // os specific they are initialized in os::init_system_properties_values(). | |
| 134 _java_ext_dirs = new SystemProperty("java.ext.dirs", NULL, true); | |
| 135 _java_endorsed_dirs = new SystemProperty("java.endorsed.dirs", NULL, true); | |
| 136 _sun_boot_library_path = new SystemProperty("sun.boot.library.path", NULL, true); | |
| 137 _java_library_path = new SystemProperty("java.library.path", NULL, true); | |
| 138 _java_home = new SystemProperty("java.home", NULL, true); | |
| 139 _sun_boot_class_path = new SystemProperty("sun.boot.class.path", NULL, true); | |
| 140 | |
| 141 _java_class_path = new SystemProperty("java.class.path", "", true); | |
| 142 | |
| 143 // Add to System Property list. | |
| 144 PropertyList_add(&_system_properties, _java_ext_dirs); | |
| 145 PropertyList_add(&_system_properties, _java_endorsed_dirs); | |
| 146 PropertyList_add(&_system_properties, _sun_boot_library_path); | |
| 147 PropertyList_add(&_system_properties, _java_library_path); | |
| 148 PropertyList_add(&_system_properties, _java_home); | |
| 149 PropertyList_add(&_system_properties, _java_class_path); | |
| 150 PropertyList_add(&_system_properties, _sun_boot_class_path); | |
| 151 | |
| 152 // Set OS specific system properties values | |
| 153 os::init_system_properties_values(); | |
| 154 } | |
| 155 | |
| 242 | 156 /** |
| 157 * Provide a slightly more user-friendly way of eliminating -XX flags. | |
| 158 * When a flag is eliminated, it can be added to this list in order to | |
| 159 * continue accepting this flag on the command-line, while issuing a warning | |
| 160 * and ignoring the value. Once the JDK version reaches the 'accept_until' | |
| 161 * limit, we flatly refuse to admit the existence of the flag. This allows | |
| 162 * a flag to die correctly over JDK releases using HSX. | |
| 163 */ | |
| 164 typedef struct { | |
| 165 const char* name; | |
| 166 JDK_Version obsoleted_in; // when the flag went away | |
| 167 JDK_Version accept_until; // which version to start denying the existence | |
| 168 } ObsoleteFlag; | |
| 0 | 169 |
| 242 | 170 static ObsoleteFlag obsolete_jvm_flags[] = { |
| 171 { "UseTrainGC", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 172 { "UseSpecialLargeObjectHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 173 { "UseOversizedCarHandling", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 174 { "TraceCarAllocation", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 175 { "PrintTrainGCProcessingStats", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 176 { "LogOfCarSpaceSize", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 177 { "OversizedCarThreshold", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 178 { "MinTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 179 { "DefaultTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 180 { "MaxTickInterval", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 181 { "DelayTickAdjustment", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 182 { "ProcessingToTenuringRatio", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 183 { "MinTrainLength", JDK_Version::jdk(5), JDK_Version::jdk(7) }, | |
| 184 { "AppendRatio", JDK_Version::jdk_update(6,10), JDK_Version::jdk(7) }, | |
| 185 { NULL, JDK_Version(0), JDK_Version(0) } | |
| 186 }; | |
| 187 | |
| 188 // Returns true if the flag is obsolete and fits into the range specified | |
| 189 // for being ignored. In the case that the flag is ignored, the 'version' | |
| 190 // value is filled in with the version number when the flag became | |
| 191 // obsolete so that that value can be displayed to the user. | |
| 192 bool Arguments::is_newly_obsolete(const char *s, JDK_Version* version) { | |
| 0 | 193 int i = 0; |
| 242 | 194 assert(version != NULL, "Must provide a version buffer"); |
| 195 while (obsolete_jvm_flags[i].name != NULL) { | |
| 196 const ObsoleteFlag& flag_status = obsolete_jvm_flags[i]; | |
| 0 | 197 // <flag>=xxx form |
| 198 // [-|+]<flag> form | |
| 242 | 199 if ((strncmp(flag_status.name, s, strlen(flag_status.name)) == 0) || |
| 0 | 200 ((s[0] == '+' || s[0] == '-') && |
| 242 | 201 (strncmp(flag_status.name, &s[1], strlen(flag_status.name)) == 0))) { |
| 202 if (JDK_Version::current().compare(flag_status.accept_until) == -1) { | |
| 203 *version = flag_status.obsoleted_in; | |
| 204 return true; | |
| 205 } | |
| 0 | 206 } |
| 207 i++; | |
| 208 } | |
| 209 return false; | |
| 210 } | |
| 211 | |
| 212 // Constructs the system class path (aka boot class path) from the following | |
| 213 // components, in order: | |
| 214 // | |
| 215 // prefix // from -Xbootclasspath/p:... | |
| 216 // endorsed // the expansion of -Djava.endorsed.dirs=... | |
| 217 // base // from os::get_system_properties() or -Xbootclasspath= | |
| 218 // suffix // from -Xbootclasspath/a:... | |
| 219 // | |
| 220 // java.endorsed.dirs is a list of directories; any jar or zip files in the | |
| 221 // directories are added to the sysclasspath just before the base. | |
| 222 // | |
| 223 // This could be AllStatic, but it isn't needed after argument processing is | |
| 224 // complete. | |
| 225 class SysClassPath: public StackObj { | |
| 226 public: | |
| 227 SysClassPath(const char* base); | |
| 228 ~SysClassPath(); | |
| 229 | |
| 230 inline void set_base(const char* base); | |
| 231 inline void add_prefix(const char* prefix); | |
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232 inline void add_suffix_to_prefix(const char* suffix); |
| 0 | 233 inline void add_suffix(const char* suffix); |
| 234 inline void reset_path(const char* base); | |
| 235 | |
| 236 // Expand the jar/zip files in each directory listed by the java.endorsed.dirs | |
| 237 // property. Must be called after all command-line arguments have been | |
| 238 // processed (in particular, -Djava.endorsed.dirs=...) and before calling | |
| 239 // combined_path(). | |
| 240 void expand_endorsed(); | |
| 241 | |
| 242 inline const char* get_base() const { return _items[_scp_base]; } | |
| 243 inline const char* get_prefix() const { return _items[_scp_prefix]; } | |
| 244 inline const char* get_suffix() const { return _items[_scp_suffix]; } | |
| 245 inline const char* get_endorsed() const { return _items[_scp_endorsed]; } | |
| 246 | |
| 247 // Combine all the components into a single c-heap-allocated string; caller | |
| 248 // must free the string if/when no longer needed. | |
| 249 char* combined_path(); | |
| 250 | |
| 251 private: | |
| 252 // Utility routines. | |
| 253 static char* add_to_path(const char* path, const char* str, bool prepend); | |
| 254 static char* add_jars_to_path(char* path, const char* directory); | |
| 255 | |
| 256 inline void reset_item_at(int index); | |
| 257 | |
| 258 // Array indices for the items that make up the sysclasspath. All except the | |
| 259 // base are allocated in the C heap and freed by this class. | |
| 260 enum { | |
| 261 _scp_prefix, // from -Xbootclasspath/p:... | |
| 262 _scp_endorsed, // the expansion of -Djava.endorsed.dirs=... | |
| 263 _scp_base, // the default sysclasspath | |
| 264 _scp_suffix, // from -Xbootclasspath/a:... | |
| 265 _scp_nitems // the number of items, must be last. | |
| 266 }; | |
| 267 | |
| 268 const char* _items[_scp_nitems]; | |
| 269 DEBUG_ONLY(bool _expansion_done;) | |
| 270 }; | |
| 271 | |
| 272 SysClassPath::SysClassPath(const char* base) { | |
| 273 memset(_items, 0, sizeof(_items)); | |
| 274 _items[_scp_base] = base; | |
| 275 DEBUG_ONLY(_expansion_done = false;) | |
| 276 } | |
| 277 | |
| 278 SysClassPath::~SysClassPath() { | |
| 279 // Free everything except the base. | |
| 280 for (int i = 0; i < _scp_nitems; ++i) { | |
| 281 if (i != _scp_base) reset_item_at(i); | |
| 282 } | |
| 283 DEBUG_ONLY(_expansion_done = false;) | |
| 284 } | |
| 285 | |
| 286 inline void SysClassPath::set_base(const char* base) { | |
| 287 _items[_scp_base] = base; | |
| 288 } | |
| 289 | |
| 290 inline void SysClassPath::add_prefix(const char* prefix) { | |
| 291 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], prefix, true); | |
| 292 } | |
| 293 | |
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294 inline void SysClassPath::add_suffix_to_prefix(const char* suffix) { |
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295 _items[_scp_prefix] = add_to_path(_items[_scp_prefix], suffix, false); |
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296 } |
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297 |
| 0 | 298 inline void SysClassPath::add_suffix(const char* suffix) { |
| 299 _items[_scp_suffix] = add_to_path(_items[_scp_suffix], suffix, false); | |
| 300 } | |
| 301 | |
| 302 inline void SysClassPath::reset_item_at(int index) { | |
| 303 assert(index < _scp_nitems && index != _scp_base, "just checking"); | |
| 304 if (_items[index] != NULL) { | |
| 305 FREE_C_HEAP_ARRAY(char, _items[index]); | |
| 306 _items[index] = NULL; | |
| 307 } | |
| 308 } | |
| 309 | |
| 310 inline void SysClassPath::reset_path(const char* base) { | |
| 311 // Clear the prefix and suffix. | |
| 312 reset_item_at(_scp_prefix); | |
| 313 reset_item_at(_scp_suffix); | |
| 314 set_base(base); | |
| 315 } | |
| 316 | |
| 317 //------------------------------------------------------------------------------ | |
| 318 | |
| 319 void SysClassPath::expand_endorsed() { | |
| 320 assert(_items[_scp_endorsed] == NULL, "can only be called once."); | |
| 321 | |
| 322 const char* path = Arguments::get_property("java.endorsed.dirs"); | |
| 323 if (path == NULL) { | |
| 324 path = Arguments::get_endorsed_dir(); | |
| 325 assert(path != NULL, "no default for java.endorsed.dirs"); | |
| 326 } | |
| 327 | |
| 328 char* expanded_path = NULL; | |
| 329 const char separator = *os::path_separator(); | |
| 330 const char* const end = path + strlen(path); | |
| 331 while (path < end) { | |
| 332 const char* tmp_end = strchr(path, separator); | |
| 333 if (tmp_end == NULL) { | |
| 334 expanded_path = add_jars_to_path(expanded_path, path); | |
| 335 path = end; | |
| 336 } else { | |
| 337 char* dirpath = NEW_C_HEAP_ARRAY(char, tmp_end - path + 1); | |
| 338 memcpy(dirpath, path, tmp_end - path); | |
| 339 dirpath[tmp_end - path] = '\0'; | |
| 340 expanded_path = add_jars_to_path(expanded_path, dirpath); | |
| 341 FREE_C_HEAP_ARRAY(char, dirpath); | |
| 342 path = tmp_end + 1; | |
| 343 } | |
| 344 } | |
| 345 _items[_scp_endorsed] = expanded_path; | |
| 346 DEBUG_ONLY(_expansion_done = true;) | |
| 347 } | |
| 348 | |
| 349 // Combine the bootclasspath elements, some of which may be null, into a single | |
| 350 // c-heap-allocated string. | |
| 351 char* SysClassPath::combined_path() { | |
| 352 assert(_items[_scp_base] != NULL, "empty default sysclasspath"); | |
| 353 assert(_expansion_done, "must call expand_endorsed() first."); | |
| 354 | |
| 355 size_t lengths[_scp_nitems]; | |
| 356 size_t total_len = 0; | |
| 357 | |
| 358 const char separator = *os::path_separator(); | |
| 359 | |
| 360 // Get the lengths. | |
| 361 int i; | |
| 362 for (i = 0; i < _scp_nitems; ++i) { | |
| 363 if (_items[i] != NULL) { | |
| 364 lengths[i] = strlen(_items[i]); | |
| 365 // Include space for the separator char (or a NULL for the last item). | |
| 366 total_len += lengths[i] + 1; | |
| 367 } | |
| 368 } | |
| 369 assert(total_len > 0, "empty sysclasspath not allowed"); | |
| 370 | |
| 371 // Copy the _items to a single string. | |
| 372 char* cp = NEW_C_HEAP_ARRAY(char, total_len); | |
| 373 char* cp_tmp = cp; | |
| 374 for (i = 0; i < _scp_nitems; ++i) { | |
| 375 if (_items[i] != NULL) { | |
| 376 memcpy(cp_tmp, _items[i], lengths[i]); | |
| 377 cp_tmp += lengths[i]; | |
| 378 *cp_tmp++ = separator; | |
| 379 } | |
| 380 } | |
| 381 *--cp_tmp = '\0'; // Replace the extra separator. | |
| 382 return cp; | |
| 383 } | |
| 384 | |
| 385 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
| 386 char* | |
| 387 SysClassPath::add_to_path(const char* path, const char* str, bool prepend) { | |
| 388 char *cp; | |
| 389 | |
| 390 assert(str != NULL, "just checking"); | |
| 391 if (path == NULL) { | |
| 392 size_t len = strlen(str) + 1; | |
| 393 cp = NEW_C_HEAP_ARRAY(char, len); | |
| 394 memcpy(cp, str, len); // copy the trailing null | |
| 395 } else { | |
| 396 const char separator = *os::path_separator(); | |
| 397 size_t old_len = strlen(path); | |
| 398 size_t str_len = strlen(str); | |
| 399 size_t len = old_len + str_len + 2; | |
| 400 | |
| 401 if (prepend) { | |
| 402 cp = NEW_C_HEAP_ARRAY(char, len); | |
| 403 char* cp_tmp = cp; | |
| 404 memcpy(cp_tmp, str, str_len); | |
| 405 cp_tmp += str_len; | |
| 406 *cp_tmp = separator; | |
| 407 memcpy(++cp_tmp, path, old_len + 1); // copy the trailing null | |
| 408 FREE_C_HEAP_ARRAY(char, path); | |
| 409 } else { | |
| 410 cp = REALLOC_C_HEAP_ARRAY(char, path, len); | |
| 411 char* cp_tmp = cp + old_len; | |
| 412 *cp_tmp = separator; | |
| 413 memcpy(++cp_tmp, str, str_len + 1); // copy the trailing null | |
| 414 } | |
| 415 } | |
| 416 return cp; | |
| 417 } | |
| 418 | |
| 419 // Scan the directory and append any jar or zip files found to path. | |
| 420 // Note: path must be c-heap-allocated (or NULL); it is freed if non-null. | |
| 421 char* SysClassPath::add_jars_to_path(char* path, const char* directory) { | |
| 422 DIR* dir = os::opendir(directory); | |
| 423 if (dir == NULL) return path; | |
| 424 | |
| 425 char dir_sep[2] = { '\0', '\0' }; | |
| 426 size_t directory_len = strlen(directory); | |
| 427 const char fileSep = *os::file_separator(); | |
| 428 if (directory[directory_len - 1] != fileSep) dir_sep[0] = fileSep; | |
| 429 | |
| 430 /* Scan the directory for jars/zips, appending them to path. */ | |
| 431 struct dirent *entry; | |
| 432 char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(directory)); | |
| 433 while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL) { | |
| 434 const char* name = entry->d_name; | |
| 435 const char* ext = name + strlen(name) - 4; | |
| 436 bool isJarOrZip = ext > name && | |
| 437 (os::file_name_strcmp(ext, ".jar") == 0 || | |
| 438 os::file_name_strcmp(ext, ".zip") == 0); | |
| 439 if (isJarOrZip) { | |
| 440 char* jarpath = NEW_C_HEAP_ARRAY(char, directory_len + 2 + strlen(name)); | |
| 441 sprintf(jarpath, "%s%s%s", directory, dir_sep, name); | |
| 442 path = add_to_path(path, jarpath, false); | |
| 443 FREE_C_HEAP_ARRAY(char, jarpath); | |
| 444 } | |
| 445 } | |
| 446 FREE_C_HEAP_ARRAY(char, dbuf); | |
| 447 os::closedir(dir); | |
| 448 return path; | |
| 449 } | |
| 450 | |
| 451 // Parses a memory size specification string. | |
|
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452 static bool atomull(const char *s, julong* result) { |
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453 julong n = 0; |
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454 int args_read = sscanf(s, os::julong_format_specifier(), &n); |
| 0 | 455 if (args_read != 1) { |
| 456 return false; | |
| 457 } | |
| 458 while (*s != '\0' && isdigit(*s)) { | |
| 459 s++; | |
| 460 } | |
| 461 // 4705540: illegal if more characters are found after the first non-digit | |
| 462 if (strlen(s) > 1) { | |
| 463 return false; | |
| 464 } | |
| 465 switch (*s) { | |
| 466 case 'T': case 't': | |
| 467 *result = n * G * K; | |
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468 // Check for overflow. |
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469 if (*result/((julong)G * K) != n) return false; |
| 0 | 470 return true; |
| 471 case 'G': case 'g': | |
| 472 *result = n * G; | |
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473 if (*result/G != n) return false; |
| 0 | 474 return true; |
| 475 case 'M': case 'm': | |
| 476 *result = n * M; | |
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477 if (*result/M != n) return false; |
| 0 | 478 return true; |
| 479 case 'K': case 'k': | |
| 480 *result = n * K; | |
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481 if (*result/K != n) return false; |
| 0 | 482 return true; |
| 483 case '\0': | |
| 484 *result = n; | |
| 485 return true; | |
| 486 default: | |
| 487 return false; | |
| 488 } | |
| 489 } | |
| 490 | |
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491 Arguments::ArgsRange Arguments::check_memory_size(julong size, julong min_size) { |
| 0 | 492 if (size < min_size) return arg_too_small; |
| 493 // Check that size will fit in a size_t (only relevant on 32-bit) | |
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494 if (size > max_uintx) return arg_too_big; |
| 0 | 495 return arg_in_range; |
| 496 } | |
| 497 | |
| 498 // Describe an argument out of range error | |
| 499 void Arguments::describe_range_error(ArgsRange errcode) { | |
| 500 switch(errcode) { | |
| 501 case arg_too_big: | |
| 502 jio_fprintf(defaultStream::error_stream(), | |
| 503 "The specified size exceeds the maximum " | |
| 504 "representable size.\n"); | |
| 505 break; | |
| 506 case arg_too_small: | |
| 507 case arg_unreadable: | |
| 508 case arg_in_range: | |
| 509 // do nothing for now | |
| 510 break; | |
| 511 default: | |
| 512 ShouldNotReachHere(); | |
| 513 } | |
| 514 } | |
| 515 | |
| 516 static bool set_bool_flag(char* name, bool value, FlagValueOrigin origin) { | |
| 517 return CommandLineFlags::boolAtPut(name, &value, origin); | |
| 518 } | |
| 519 | |
| 520 static bool set_fp_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
| 521 double v; | |
| 522 if (sscanf(value, "%lf", &v) != 1) { | |
| 523 return false; | |
| 524 } | |
| 525 | |
| 526 if (CommandLineFlags::doubleAtPut(name, &v, origin)) { | |
| 527 return true; | |
| 528 } | |
| 529 return false; | |
| 530 } | |
| 531 | |
| 532 static bool set_numeric_flag(char* name, char* value, FlagValueOrigin origin) { | |
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533 julong v; |
| 0 | 534 intx intx_v; |
| 535 bool is_neg = false; | |
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536 // Check the sign first since atomull() parses only unsigned values. |
| 0 | 537 if (*value == '-') { |
| 538 if (!CommandLineFlags::intxAt(name, &intx_v)) { | |
| 539 return false; | |
| 540 } | |
| 541 value++; | |
| 542 is_neg = true; | |
| 543 } | |
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544 if (!atomull(value, &v)) { |
| 0 | 545 return false; |
| 546 } | |
| 547 intx_v = (intx) v; | |
| 548 if (is_neg) { | |
| 549 intx_v = -intx_v; | |
| 550 } | |
| 551 if (CommandLineFlags::intxAtPut(name, &intx_v, origin)) { | |
| 552 return true; | |
| 553 } | |
| 554 uintx uintx_v = (uintx) v; | |
| 555 if (!is_neg && CommandLineFlags::uintxAtPut(name, &uintx_v, origin)) { | |
| 556 return true; | |
| 557 } | |
| 558 return false; | |
| 559 } | |
| 560 | |
| 561 static bool set_string_flag(char* name, const char* value, FlagValueOrigin origin) { | |
| 562 if (!CommandLineFlags::ccstrAtPut(name, &value, origin)) return false; | |
| 563 // Contract: CommandLineFlags always returns a pointer that needs freeing. | |
| 564 FREE_C_HEAP_ARRAY(char, value); | |
| 565 return true; | |
| 566 } | |
| 567 | |
| 568 static bool append_to_string_flag(char* name, const char* new_value, FlagValueOrigin origin) { | |
| 569 const char* old_value = ""; | |
| 570 if (!CommandLineFlags::ccstrAt(name, &old_value)) return false; | |
| 571 size_t old_len = old_value != NULL ? strlen(old_value) : 0; | |
| 572 size_t new_len = strlen(new_value); | |
| 573 const char* value; | |
| 574 char* free_this_too = NULL; | |
| 575 if (old_len == 0) { | |
| 576 value = new_value; | |
| 577 } else if (new_len == 0) { | |
| 578 value = old_value; | |
| 579 } else { | |
| 580 char* buf = NEW_C_HEAP_ARRAY(char, old_len + 1 + new_len + 1); | |
| 581 // each new setting adds another LINE to the switch: | |
| 582 sprintf(buf, "%s\n%s", old_value, new_value); | |
| 583 value = buf; | |
| 584 free_this_too = buf; | |
| 585 } | |
| 586 (void) CommandLineFlags::ccstrAtPut(name, &value, origin); | |
| 587 // CommandLineFlags always returns a pointer that needs freeing. | |
| 588 FREE_C_HEAP_ARRAY(char, value); | |
| 589 if (free_this_too != NULL) { | |
| 590 // CommandLineFlags made its own copy, so I must delete my own temp. buffer. | |
| 591 FREE_C_HEAP_ARRAY(char, free_this_too); | |
| 592 } | |
| 593 return true; | |
| 594 } | |
| 595 | |
| 596 bool Arguments::parse_argument(const char* arg, FlagValueOrigin origin) { | |
| 597 | |
| 598 // range of acceptable characters spelled out for portability reasons | |
| 599 #define NAME_RANGE "[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]" | |
| 600 #define BUFLEN 255 | |
| 601 char name[BUFLEN+1]; | |
| 602 char dummy; | |
| 603 | |
| 604 if (sscanf(arg, "-%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
| 605 return set_bool_flag(name, false, origin); | |
| 606 } | |
| 607 if (sscanf(arg, "+%" XSTR(BUFLEN) NAME_RANGE "%c", name, &dummy) == 1) { | |
| 608 return set_bool_flag(name, true, origin); | |
| 609 } | |
| 610 | |
| 611 char punct; | |
| 612 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "%c", name, &punct) == 2 && punct == '=') { | |
| 613 const char* value = strchr(arg, '=') + 1; | |
| 614 Flag* flag = Flag::find_flag(name, strlen(name)); | |
| 615 if (flag != NULL && flag->is_ccstr()) { | |
| 616 if (flag->ccstr_accumulates()) { | |
| 617 return append_to_string_flag(name, value, origin); | |
| 618 } else { | |
| 619 if (value[0] == '\0') { | |
| 620 value = NULL; | |
| 621 } | |
| 622 return set_string_flag(name, value, origin); | |
| 623 } | |
| 624 } | |
| 625 } | |
| 626 | |
| 627 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE ":%c", name, &punct) == 2 && punct == '=') { | |
| 628 const char* value = strchr(arg, '=') + 1; | |
| 629 // -XX:Foo:=xxx will reset the string flag to the given value. | |
| 630 if (value[0] == '\0') { | |
| 631 value = NULL; | |
| 632 } | |
| 633 return set_string_flag(name, value, origin); | |
| 634 } | |
| 635 | |
| 636 #define SIGNED_FP_NUMBER_RANGE "[-0123456789.]" | |
| 637 #define SIGNED_NUMBER_RANGE "[-0123456789]" | |
| 638 #define NUMBER_RANGE "[0123456789]" | |
| 639 char value[BUFLEN + 1]; | |
| 640 char value2[BUFLEN + 1]; | |
| 641 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_NUMBER_RANGE "." "%" XSTR(BUFLEN) NUMBER_RANGE "%c", name, value, value2, &dummy) == 3) { | |
| 642 // Looks like a floating-point number -- try again with more lenient format string | |
| 643 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) SIGNED_FP_NUMBER_RANGE "%c", name, value, &dummy) == 2) { | |
| 644 return set_fp_numeric_flag(name, value, origin); | |
| 645 } | |
| 646 } | |
| 647 | |
| 648 #define VALUE_RANGE "[-kmgtKMGT0123456789]" | |
| 649 if (sscanf(arg, "%" XSTR(BUFLEN) NAME_RANGE "=" "%" XSTR(BUFLEN) VALUE_RANGE "%c", name, value, &dummy) == 2) { | |
| 650 return set_numeric_flag(name, value, origin); | |
| 651 } | |
| 652 | |
| 653 return false; | |
| 654 } | |
| 655 | |
| 656 void Arguments::add_string(char*** bldarray, int* count, const char* arg) { | |
| 657 assert(bldarray != NULL, "illegal argument"); | |
| 658 | |
| 659 if (arg == NULL) { | |
| 660 return; | |
| 661 } | |
| 662 | |
| 663 int index = *count; | |
| 664 | |
| 665 // expand the array and add arg to the last element | |
| 666 (*count)++; | |
| 667 if (*bldarray == NULL) { | |
| 668 *bldarray = NEW_C_HEAP_ARRAY(char*, *count); | |
| 669 } else { | |
| 670 *bldarray = REALLOC_C_HEAP_ARRAY(char*, *bldarray, *count); | |
| 671 } | |
| 672 (*bldarray)[index] = strdup(arg); | |
| 673 } | |
| 674 | |
| 675 void Arguments::build_jvm_args(const char* arg) { | |
| 676 add_string(&_jvm_args_array, &_num_jvm_args, arg); | |
| 677 } | |
| 678 | |
| 679 void Arguments::build_jvm_flags(const char* arg) { | |
| 680 add_string(&_jvm_flags_array, &_num_jvm_flags, arg); | |
| 681 } | |
| 682 | |
| 683 // utility function to return a string that concatenates all | |
| 684 // strings in a given char** array | |
| 685 const char* Arguments::build_resource_string(char** args, int count) { | |
| 686 if (args == NULL || count == 0) { | |
| 687 return NULL; | |
| 688 } | |
| 689 size_t length = strlen(args[0]) + 1; // add 1 for the null terminator | |
| 690 for (int i = 1; i < count; i++) { | |
| 691 length += strlen(args[i]) + 1; // add 1 for a space | |
| 692 } | |
| 693 char* s = NEW_RESOURCE_ARRAY(char, length); | |
| 694 strcpy(s, args[0]); | |
| 695 for (int j = 1; j < count; j++) { | |
| 696 strcat(s, " "); | |
| 697 strcat(s, args[j]); | |
| 698 } | |
| 699 return (const char*) s; | |
| 700 } | |
| 701 | |
| 702 void Arguments::print_on(outputStream* st) { | |
| 703 st->print_cr("VM Arguments:"); | |
| 704 if (num_jvm_flags() > 0) { | |
| 705 st->print("jvm_flags: "); print_jvm_flags_on(st); | |
| 706 } | |
| 707 if (num_jvm_args() > 0) { | |
| 708 st->print("jvm_args: "); print_jvm_args_on(st); | |
| 709 } | |
| 710 st->print_cr("java_command: %s", java_command() ? java_command() : "<unknown>"); | |
| 711 st->print_cr("Launcher Type: %s", _sun_java_launcher); | |
| 712 } | |
| 713 | |
| 714 void Arguments::print_jvm_flags_on(outputStream* st) { | |
| 715 if (_num_jvm_flags > 0) { | |
| 716 for (int i=0; i < _num_jvm_flags; i++) { | |
| 717 st->print("%s ", _jvm_flags_array[i]); | |
| 718 } | |
| 719 st->print_cr(""); | |
| 720 } | |
| 721 } | |
| 722 | |
| 723 void Arguments::print_jvm_args_on(outputStream* st) { | |
| 724 if (_num_jvm_args > 0) { | |
| 725 for (int i=0; i < _num_jvm_args; i++) { | |
| 726 st->print("%s ", _jvm_args_array[i]); | |
| 727 } | |
| 728 st->print_cr(""); | |
| 729 } | |
| 730 } | |
| 731 | |
| 242 | 732 bool Arguments::process_argument(const char* arg, |
| 733 jboolean ignore_unrecognized, FlagValueOrigin origin) { | |
| 734 | |
| 735 JDK_Version since = JDK_Version(); | |
| 0 | 736 |
| 737 if (parse_argument(arg, origin)) { | |
| 738 // do nothing | |
| 242 | 739 } else if (is_newly_obsolete(arg, &since)) { |
| 740 enum { bufsize = 256 }; | |
| 741 char buffer[bufsize]; | |
| 742 since.to_string(buffer, bufsize); | |
| 0 | 743 jio_fprintf(defaultStream::error_stream(), |
| 242 | 744 "Warning: The flag %s has been EOL'd as of %s and will" |
| 745 " be ignored\n", arg, buffer); | |
| 0 | 746 } else { |
| 747 if (!ignore_unrecognized) { | |
| 748 jio_fprintf(defaultStream::error_stream(), | |
| 749 "Unrecognized VM option '%s'\n", arg); | |
| 750 // allow for commandline "commenting out" options like -XX:#+Verbose | |
| 751 if (strlen(arg) == 0 || arg[0] != '#') { | |
| 752 return false; | |
| 753 } | |
| 754 } | |
| 755 } | |
| 756 return true; | |
| 757 } | |
| 758 | |
| 759 bool Arguments::process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized) { | |
| 760 FILE* stream = fopen(file_name, "rb"); | |
| 761 if (stream == NULL) { | |
| 762 if (should_exist) { | |
| 763 jio_fprintf(defaultStream::error_stream(), | |
| 764 "Could not open settings file %s\n", file_name); | |
| 765 return false; | |
| 766 } else { | |
| 767 return true; | |
| 768 } | |
| 769 } | |
| 770 | |
| 771 char token[1024]; | |
| 772 int pos = 0; | |
| 773 | |
| 774 bool in_white_space = true; | |
| 775 bool in_comment = false; | |
| 776 bool in_quote = false; | |
| 777 char quote_c = 0; | |
| 778 bool result = true; | |
| 779 | |
| 780 int c = getc(stream); | |
| 781 while(c != EOF) { | |
| 782 if (in_white_space) { | |
| 783 if (in_comment) { | |
| 784 if (c == '\n') in_comment = false; | |
| 785 } else { | |
| 786 if (c == '#') in_comment = true; | |
| 787 else if (!isspace(c)) { | |
| 788 in_white_space = false; | |
| 789 token[pos++] = c; | |
| 790 } | |
| 791 } | |
| 792 } else { | |
| 793 if (c == '\n' || (!in_quote && isspace(c))) { | |
| 794 // token ends at newline, or at unquoted whitespace | |
| 795 // this allows a way to include spaces in string-valued options | |
| 796 token[pos] = '\0'; | |
| 797 logOption(token); | |
| 798 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
| 799 build_jvm_flags(token); | |
| 800 pos = 0; | |
| 801 in_white_space = true; | |
| 802 in_quote = false; | |
| 803 } else if (!in_quote && (c == '\'' || c == '"')) { | |
| 804 in_quote = true; | |
| 805 quote_c = c; | |
| 806 } else if (in_quote && (c == quote_c)) { | |
| 807 in_quote = false; | |
| 808 } else { | |
| 809 token[pos++] = c; | |
| 810 } | |
| 811 } | |
| 812 c = getc(stream); | |
| 813 } | |
| 814 if (pos > 0) { | |
| 815 token[pos] = '\0'; | |
| 816 result &= process_argument(token, ignore_unrecognized, CONFIG_FILE); | |
| 817 build_jvm_flags(token); | |
| 818 } | |
| 819 fclose(stream); | |
| 820 return result; | |
| 821 } | |
| 822 | |
| 823 //============================================================================================================= | |
| 824 // Parsing of properties (-D) | |
| 825 | |
| 826 const char* Arguments::get_property(const char* key) { | |
| 827 return PropertyList_get_value(system_properties(), key); | |
| 828 } | |
| 829 | |
| 830 bool Arguments::add_property(const char* prop) { | |
| 831 const char* eq = strchr(prop, '='); | |
| 832 char* key; | |
| 833 // ns must be static--its address may be stored in a SystemProperty object. | |
| 834 const static char ns[1] = {0}; | |
| 835 char* value = (char *)ns; | |
| 836 | |
| 837 size_t key_len = (eq == NULL) ? strlen(prop) : (eq - prop); | |
| 838 key = AllocateHeap(key_len + 1, "add_property"); | |
| 839 strncpy(key, prop, key_len); | |
| 840 key[key_len] = '\0'; | |
| 841 | |
| 842 if (eq != NULL) { | |
| 843 size_t value_len = strlen(prop) - key_len - 1; | |
| 844 value = AllocateHeap(value_len + 1, "add_property"); | |
| 845 strncpy(value, &prop[key_len + 1], value_len + 1); | |
| 846 } | |
| 847 | |
| 848 if (strcmp(key, "java.compiler") == 0) { | |
| 849 process_java_compiler_argument(value); | |
| 850 FreeHeap(key); | |
| 851 if (eq != NULL) { | |
| 852 FreeHeap(value); | |
| 853 } | |
| 854 return true; | |
| 855 } | |
| 856 else if (strcmp(key, "sun.java.command") == 0) { | |
| 857 | |
| 858 _java_command = value; | |
| 859 | |
| 860 // don't add this property to the properties exposed to the java application | |
| 861 FreeHeap(key); | |
| 862 return true; | |
| 863 } | |
| 864 else if (strcmp(key, "sun.java.launcher.pid") == 0) { | |
| 865 // launcher.pid property is private and is processed | |
| 866 // in process_sun_java_launcher_properties(); | |
| 867 // the sun.java.launcher property is passed on to the java application | |
| 868 FreeHeap(key); | |
| 869 if (eq != NULL) { | |
| 870 FreeHeap(value); | |
| 871 } | |
| 872 return true; | |
| 873 } | |
| 874 else if (strcmp(key, "java.vendor.url.bug") == 0) { | |
| 875 // save it in _java_vendor_url_bug, so JVM fatal error handler can access | |
| 876 // its value without going through the property list or making a Java call. | |
| 877 _java_vendor_url_bug = value; | |
| 878 } | |
| 879 | |
| 880 // Create new property and add at the end of the list | |
| 881 PropertyList_unique_add(&_system_properties, key, value); | |
| 882 return true; | |
| 883 } | |
| 884 | |
| 885 //=========================================================================================================== | |
| 886 // Setting int/mixed/comp mode flags | |
| 887 | |
| 888 void Arguments::set_mode_flags(Mode mode) { | |
| 889 // Set up default values for all flags. | |
| 890 // If you add a flag to any of the branches below, | |
| 891 // add a default value for it here. | |
| 892 set_java_compiler(false); | |
| 893 _mode = mode; | |
| 894 | |
| 895 // Ensure Agent_OnLoad has the correct initial values. | |
| 896 // This may not be the final mode; mode may change later in onload phase. | |
| 897 PropertyList_unique_add(&_system_properties, "java.vm.info", | |
| 898 (char*)Abstract_VM_Version::vm_info_string()); | |
| 899 | |
| 900 UseInterpreter = true; | |
| 901 UseCompiler = true; | |
| 902 UseLoopCounter = true; | |
| 903 | |
| 904 // Default values may be platform/compiler dependent - | |
| 905 // use the saved values | |
| 906 ClipInlining = Arguments::_ClipInlining; | |
| 907 AlwaysCompileLoopMethods = Arguments::_AlwaysCompileLoopMethods; | |
| 908 UseOnStackReplacement = Arguments::_UseOnStackReplacement; | |
| 909 BackgroundCompilation = Arguments::_BackgroundCompilation; | |
| 910 Tier2CompileThreshold = Arguments::_Tier2CompileThreshold; | |
| 911 | |
| 912 // Change from defaults based on mode | |
| 913 switch (mode) { | |
| 914 default: | |
| 915 ShouldNotReachHere(); | |
| 916 break; | |
| 917 case _int: | |
| 918 UseCompiler = false; | |
| 919 UseLoopCounter = false; | |
| 920 AlwaysCompileLoopMethods = false; | |
| 921 UseOnStackReplacement = false; | |
| 922 break; | |
| 923 case _mixed: | |
| 924 // same as default | |
| 925 break; | |
| 926 case _comp: | |
| 927 UseInterpreter = false; | |
| 928 BackgroundCompilation = false; | |
| 929 ClipInlining = false; | |
| 930 break; | |
| 931 } | |
| 932 } | |
| 933 | |
| 934 // Conflict: required to use shared spaces (-Xshare:on), but | |
| 935 // incompatible command line options were chosen. | |
| 936 | |
| 937 static void no_shared_spaces() { | |
| 938 if (RequireSharedSpaces) { | |
| 939 jio_fprintf(defaultStream::error_stream(), | |
| 940 "Class data sharing is inconsistent with other specified options.\n"); | |
| 941 vm_exit_during_initialization("Unable to use shared archive.", NULL); | |
| 942 } else { | |
| 943 FLAG_SET_DEFAULT(UseSharedSpaces, false); | |
| 944 } | |
| 945 } | |
| 946 | |
| 947 // If the user has chosen ParallelGCThreads > 0, we set UseParNewGC | |
| 948 // if it's not explictly set or unset. If the user has chosen | |
| 949 // UseParNewGC and not explicitly set ParallelGCThreads we | |
| 950 // set it, unless this is a single cpu machine. | |
| 951 void Arguments::set_parnew_gc_flags() { | |
|
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952 assert(!UseSerialGC && !UseParallelGC && !UseG1GC, |
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953 "control point invariant"); |
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954 assert(UseParNewGC, "Error"); |
| 0 | 955 |
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956 // Turn off AdaptiveSizePolicy by default for parnew until it is |
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957 // complete. |
|
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958 if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) { |
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959 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
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960 } |
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961 |
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962 if (ParallelGCThreads == 0) { |
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963 FLAG_SET_DEFAULT(ParallelGCThreads, |
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964 Abstract_VM_Version::parallel_worker_threads()); |
| 0 | 965 if (FLAG_IS_DEFAULT(ParallelGCThreads) && ParallelGCThreads == 1) { |
| 966 FLAG_SET_DEFAULT(UseParNewGC, false); | |
| 967 } | |
| 968 } | |
| 969 if (!UseParNewGC) { | |
| 970 FLAG_SET_DEFAULT(ParallelGCThreads, 0); | |
| 971 } else { | |
| 972 no_shared_spaces(); | |
| 973 | |
| 974 // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 correspondinly, | |
| 975 // these settings are default for Parallel Scavenger. For ParNew+Tenured configuration | |
| 976 // we set them to 1024 and 1024. | |
| 977 // See CR 6362902. | |
| 978 if (FLAG_IS_DEFAULT(YoungPLABSize)) { | |
| 979 FLAG_SET_DEFAULT(YoungPLABSize, (intx)1024); | |
| 980 } | |
| 981 if (FLAG_IS_DEFAULT(OldPLABSize)) { | |
| 982 FLAG_SET_DEFAULT(OldPLABSize, (intx)1024); | |
| 983 } | |
| 984 | |
| 985 // AlwaysTenure flag should make ParNew to promote all at first collection. | |
| 986 // See CR 6362902. | |
| 987 if (AlwaysTenure) { | |
| 988 FLAG_SET_CMDLINE(intx, MaxTenuringThreshold, 0); | |
| 989 } | |
| 990 } | |
| 991 } | |
| 992 | |
| 993 // Adjust some sizes to suit CMS and/or ParNew needs; these work well on | |
| 994 // sparc/solaris for certain applications, but would gain from | |
| 995 // further optimization and tuning efforts, and would almost | |
| 996 // certainly gain from analysis of platform and environment. | |
| 997 void Arguments::set_cms_and_parnew_gc_flags() { | |
|
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998 assert(!UseSerialGC && !UseParallelGC, "Error"); |
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999 assert(UseConcMarkSweepGC, "CMS is expected to be on here"); |
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1000 |
| 0 | 1001 // If we are using CMS, we prefer to UseParNewGC, |
| 1002 // unless explicitly forbidden. | |
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1003 if (FLAG_IS_DEFAULT(UseParNewGC)) { |
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1004 FLAG_SET_ERGO(bool, UseParNewGC, true); |
| 0 | 1005 } |
| 1006 | |
| 1007 // Turn off AdaptiveSizePolicy by default for cms until it is | |
|
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1008 // complete. |
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1009 if (FLAG_IS_DEFAULT(UseAdaptiveSizePolicy)) { |
| 0 | 1010 FLAG_SET_DEFAULT(UseAdaptiveSizePolicy, false); |
| 1011 } | |
| 1012 | |
| 1013 // In either case, adjust ParallelGCThreads and/or UseParNewGC | |
| 1014 // as needed. | |
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1015 if (UseParNewGC) { |
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1016 set_parnew_gc_flags(); |
| 0 | 1017 } |
| 1018 | |
| 1019 // Now make adjustments for CMS | |
| 1020 size_t young_gen_per_worker; | |
| 1021 intx new_ratio; | |
| 1022 size_t min_new_default; | |
| 1023 intx tenuring_default; | |
| 1024 if (CMSUseOldDefaults) { // old defaults: "old" as of 6.0 | |
| 1025 if FLAG_IS_DEFAULT(CMSYoungGenPerWorker) { | |
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1026 FLAG_SET_ERGO(intx, CMSYoungGenPerWorker, 4*M); |
| 0 | 1027 } |
| 1028 young_gen_per_worker = 4*M; | |
| 1029 new_ratio = (intx)15; | |
| 1030 min_new_default = 4*M; | |
| 1031 tenuring_default = (intx)0; | |
| 1032 } else { // new defaults: "new" as of 6.0 | |
| 1033 young_gen_per_worker = CMSYoungGenPerWorker; | |
| 1034 new_ratio = (intx)7; | |
| 1035 min_new_default = 16*M; | |
| 1036 tenuring_default = (intx)4; | |
| 1037 } | |
| 1038 | |
| 1039 // Preferred young gen size for "short" pauses | |
| 1040 const uintx parallel_gc_threads = | |
| 1041 (ParallelGCThreads == 0 ? 1 : ParallelGCThreads); | |
| 1042 const size_t preferred_max_new_size_unaligned = | |
| 1043 ScaleForWordSize(young_gen_per_worker * parallel_gc_threads); | |
| 1044 const size_t preferred_max_new_size = | |
| 1045 align_size_up(preferred_max_new_size_unaligned, os::vm_page_size()); | |
| 1046 | |
| 1047 // Unless explicitly requested otherwise, size young gen | |
| 1048 // for "short" pauses ~ 4M*ParallelGCThreads | |
| 1049 if (FLAG_IS_DEFAULT(MaxNewSize)) { // MaxNewSize not set at command-line | |
| 1050 if (!FLAG_IS_DEFAULT(NewSize)) { // NewSize explicitly set at command-line | |
|
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1051 FLAG_SET_ERGO(uintx, MaxNewSize, MAX2(NewSize, preferred_max_new_size)); |
| 0 | 1052 } else { |
|
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1053 FLAG_SET_ERGO(uintx, MaxNewSize, preferred_max_new_size); |
| 0 | 1054 } |
|
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1055 if(PrintGCDetails && Verbose) { |
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1056 // Too early to use gclog_or_tty |
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1057 tty->print_cr("Ergo set MaxNewSize: " SIZE_FORMAT, MaxNewSize); |
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1058 } |
| 0 | 1059 } |
| 1060 // Unless explicitly requested otherwise, prefer a large | |
| 1061 // Old to Young gen size so as to shift the collection load | |
| 1062 // to the old generation concurrent collector | |
| 1063 if (FLAG_IS_DEFAULT(NewRatio)) { | |
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1064 FLAG_SET_ERGO(intx, NewRatio, MAX2(NewRatio, new_ratio)); |
| 0 | 1065 |
| 1066 size_t min_new = align_size_up(ScaleForWordSize(min_new_default), os::vm_page_size()); | |
| 1067 size_t prev_initial_size = initial_heap_size(); | |
| 1068 if (prev_initial_size != 0 && prev_initial_size < min_new+OldSize) { | |
| 1069 set_initial_heap_size(min_new+OldSize); | |
| 1070 // Currently minimum size and the initial heap sizes are the same. | |
| 1071 set_min_heap_size(initial_heap_size()); | |
| 1072 if (PrintGCDetails && Verbose) { | |
| 1073 warning("Initial heap size increased to " SIZE_FORMAT " M from " | |
| 1074 SIZE_FORMAT " M; use -XX:NewSize=... for finer control.", | |
| 1075 initial_heap_size()/M, prev_initial_size/M); | |
| 1076 } | |
| 1077 } | |
| 1078 // MaxHeapSize is aligned down in collectorPolicy | |
| 1079 size_t max_heap = align_size_down(MaxHeapSize, | |
| 1080 CardTableRS::ct_max_alignment_constraint()); | |
| 1081 | |
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1082 if(PrintGCDetails && Verbose) { |
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1083 // Too early to use gclog_or_tty |
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1084 tty->print_cr("CMS set min_heap_size: " SIZE_FORMAT |
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1085 " initial_heap_size: " SIZE_FORMAT |
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1086 " max_heap: " SIZE_FORMAT, |
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1087 min_heap_size(), initial_heap_size(), max_heap); |
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1088 } |
| 0 | 1089 if (max_heap > min_new) { |
| 1090 // Unless explicitly requested otherwise, make young gen | |
| 1091 // at least min_new, and at most preferred_max_new_size. | |
| 1092 if (FLAG_IS_DEFAULT(NewSize)) { | |
|
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1093 FLAG_SET_ERGO(uintx, NewSize, MAX2(NewSize, min_new)); |
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1094 FLAG_SET_ERGO(uintx, NewSize, MIN2(preferred_max_new_size, NewSize)); |
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1095 if(PrintGCDetails && Verbose) { |
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1096 // Too early to use gclog_or_tty |
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1097 tty->print_cr("Ergo set NewSize: " SIZE_FORMAT, NewSize); |
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1098 } |
| 0 | 1099 } |
| 1100 // Unless explicitly requested otherwise, size old gen | |
| 1101 // so that it's at least 3X of NewSize to begin with; | |
| 1102 // later NewRatio will decide how it grows; see above. | |
| 1103 if (FLAG_IS_DEFAULT(OldSize)) { | |
| 1104 if (max_heap > NewSize) { | |
|
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1105 FLAG_SET_ERGO(uintx, OldSize, MIN2(3*NewSize, max_heap - NewSize)); |
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1106 if(PrintGCDetails && Verbose) { |
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1107 // Too early to use gclog_or_tty |
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1108 tty->print_cr("Ergo set OldSize: " SIZE_FORMAT, OldSize); |
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1109 } |
| 0 | 1110 } |
| 1111 } | |
| 1112 } | |
| 1113 } | |
| 1114 // Unless explicitly requested otherwise, definitely | |
| 1115 // promote all objects surviving "tenuring_default" scavenges. | |
| 1116 if (FLAG_IS_DEFAULT(MaxTenuringThreshold) && | |
| 1117 FLAG_IS_DEFAULT(SurvivorRatio)) { | |
|
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1118 FLAG_SET_ERGO(intx, MaxTenuringThreshold, tenuring_default); |
| 0 | 1119 } |
| 1120 // If we decided above (or user explicitly requested) | |
| 1121 // `promote all' (via MaxTenuringThreshold := 0), | |
| 1122 // prefer minuscule survivor spaces so as not to waste | |
| 1123 // space for (non-existent) survivors | |
| 1124 if (FLAG_IS_DEFAULT(SurvivorRatio) && MaxTenuringThreshold == 0) { | |
|
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1125 FLAG_SET_ERGO(intx, SurvivorRatio, MAX2((intx)1024, SurvivorRatio)); |
| 0 | 1126 } |
| 1127 // If OldPLABSize is set and CMSParPromoteBlocksToClaim is not, | |
| 1128 // set CMSParPromoteBlocksToClaim equal to OldPLABSize. | |
| 1129 // This is done in order to make ParNew+CMS configuration to work | |
| 1130 // with YoungPLABSize and OldPLABSize options. | |
| 1131 // See CR 6362902. | |
| 1132 if (!FLAG_IS_DEFAULT(OldPLABSize)) { | |
| 1133 if (FLAG_IS_DEFAULT(CMSParPromoteBlocksToClaim)) { | |
|
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1134 // OldPLABSize is not the default value but CMSParPromoteBlocksToClaim |
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1135 // is. In this situtation let CMSParPromoteBlocksToClaim follow |
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1136 // the value (either from the command line or ergonomics) of |
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1137 // OldPLABSize. Following OldPLABSize is an ergonomics decision. |
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1138 FLAG_SET_ERGO(uintx, CMSParPromoteBlocksToClaim, OldPLABSize); |
| 0 | 1139 } |
| 1140 else { | |
| 1141 // OldPLABSize and CMSParPromoteBlocksToClaim are both set. | |
| 1142 // CMSParPromoteBlocksToClaim is a collector-specific flag, so | |
| 1143 // we'll let it to take precedence. | |
| 1144 jio_fprintf(defaultStream::error_stream(), | |
| 1145 "Both OldPLABSize and CMSParPromoteBlocksToClaim options are specified " | |
| 1146 "for the CMS collector. CMSParPromoteBlocksToClaim will take precedence.\n"); | |
| 1147 } | |
| 1148 } | |
| 1149 } | |
| 1150 | |
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1151 inline uintx max_heap_for_compressed_oops() { |
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1152 LP64_ONLY(return oopDesc::OopEncodingHeapMax - MaxPermSize - os::vm_page_size()); |
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1153 NOT_LP64(return DefaultMaxRAM); |
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1154 } |
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1155 |
| 0 | 1156 bool Arguments::should_auto_select_low_pause_collector() { |
| 1157 if (UseAutoGCSelectPolicy && | |
| 1158 !FLAG_IS_DEFAULT(MaxGCPauseMillis) && | |
| 1159 (MaxGCPauseMillis <= AutoGCSelectPauseMillis)) { | |
| 1160 if (PrintGCDetails) { | |
| 1161 // Cannot use gclog_or_tty yet. | |
| 1162 tty->print_cr("Automatic selection of the low pause collector" | |
| 1163 " based on pause goal of %d (ms)", MaxGCPauseMillis); | |
| 1164 } | |
| 1165 return true; | |
| 1166 } | |
| 1167 return false; | |
| 1168 } | |
| 1169 | |
| 1170 void Arguments::set_ergonomics_flags() { | |
| 1171 // Parallel GC is not compatible with sharing. If one specifies | |
| 1172 // that they want sharing explicitly, do not set ergonmics flags. | |
| 1173 if (DumpSharedSpaces || ForceSharedSpaces) { | |
| 1174 return; | |
| 1175 } | |
| 1176 | |
| 1177 if (os::is_server_class_machine() && !force_client_mode ) { | |
| 1178 // If no other collector is requested explicitly, | |
| 1179 // let the VM select the collector based on | |
| 1180 // machine class and automatic selection policy. | |
| 1181 if (!UseSerialGC && | |
| 1182 !UseConcMarkSweepGC && | |
|
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1183 !UseG1GC && |
| 0 | 1184 !UseParNewGC && |
| 1185 !DumpSharedSpaces && | |
| 1186 FLAG_IS_DEFAULT(UseParallelGC)) { | |
| 1187 if (should_auto_select_low_pause_collector()) { | |
| 1188 FLAG_SET_ERGO(bool, UseConcMarkSweepGC, true); | |
| 1189 } else { | |
| 1190 FLAG_SET_ERGO(bool, UseParallelGC, true); | |
| 1191 } | |
| 1192 no_shared_spaces(); | |
| 1193 } | |
| 1194 } | |
|
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1195 |
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1196 #ifdef _LP64 |
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1197 // Compressed Headers do not work with CMS, which uses a bit in the klass |
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1198 // field offset to determine free list chunk markers. |
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1199 // Check that UseCompressedOops can be set with the max heap size allocated |
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1200 // by ergonomics. |
| 187 | 1201 if (MaxHeapSize <= max_heap_for_compressed_oops()) { |
| 344 | 1202 if (FLAG_IS_DEFAULT(UseCompressedOops) && !UseG1GC) { |
| 239 | 1203 // Turn off until bug is fixed. |
| 185 | 1204 // the following line to return it to default status. |
| 239 | 1205 // FLAG_SET_ERGO(bool, UseCompressedOops, true); |
| 344 | 1206 } else if (UseCompressedOops && UseG1GC) { |
| 1207 warning(" UseCompressedOops does not currently work with UseG1GC; switching off UseCompressedOops. "); | |
| 1208 FLAG_SET_DEFAULT(UseCompressedOops, false); | |
|
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1209 } |
|
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1210 #ifdef _WIN64 |
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1211 if (UseLargePages && UseCompressedOops) { |
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1212 // Cannot allocate guard pages for implicit checks in indexed addressing |
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1213 // mode, when large pages are specified on windows. |
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1214 FLAG_SET_DEFAULT(UseImplicitNullCheckForNarrowOop, false); |
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1215 } |
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1216 #endif // _WIN64 |
|
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1217 } else { |
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1218 if (UseCompressedOops && !FLAG_IS_DEFAULT(UseCompressedOops)) { |
| 344 | 1219 warning("Max heap size too large for Compressed Oops"); |
|
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1220 FLAG_SET_DEFAULT(UseCompressedOops, false); |
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1221 } |
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1222 } |
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1223 // Also checks that certain machines are slower with compressed oops |
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1224 // in vm_version initialization code. |
|
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1225 #endif // _LP64 |
| 0 | 1226 } |
| 1227 | |
| 1228 void Arguments::set_parallel_gc_flags() { | |
|
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1229 assert(UseParallelGC || UseParallelOldGC, "Error"); |
| 0 | 1230 // If parallel old was requested, automatically enable parallel scavenge. |
| 1231 if (UseParallelOldGC && !UseParallelGC && FLAG_IS_DEFAULT(UseParallelGC)) { | |
| 1232 FLAG_SET_DEFAULT(UseParallelGC, true); | |
| 1233 } | |
| 1234 | |
| 1235 // If no heap maximum was requested explicitly, use some reasonable fraction | |
| 1236 // of the physical memory, up to a maximum of 1GB. | |
| 1237 if (UseParallelGC) { | |
|
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|
1238 FLAG_SET_ERGO(uintx, ParallelGCThreads, |
|
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|
1239 Abstract_VM_Version::parallel_worker_threads()); |
|
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1240 |
|
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1241 // PS is a server collector, setup the heap sizes accordingly. |
|
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1242 set_server_heap_size(); |
| 0 | 1243 // If InitialSurvivorRatio or MinSurvivorRatio were not specified, but the |
| 1244 // SurvivorRatio has been set, reset their default values to SurvivorRatio + | |
| 1245 // 2. By doing this we make SurvivorRatio also work for Parallel Scavenger. | |
| 1246 // See CR 6362902 for details. | |
| 1247 if (!FLAG_IS_DEFAULT(SurvivorRatio)) { | |
| 1248 if (FLAG_IS_DEFAULT(InitialSurvivorRatio)) { | |
| 1249 FLAG_SET_DEFAULT(InitialSurvivorRatio, SurvivorRatio + 2); | |
| 1250 } | |
| 1251 if (FLAG_IS_DEFAULT(MinSurvivorRatio)) { | |
| 1252 FLAG_SET_DEFAULT(MinSurvivorRatio, SurvivorRatio + 2); | |
| 1253 } | |
| 1254 } | |
| 1255 | |
| 1256 if (UseParallelOldGC) { | |
| 1257 // Par compact uses lower default values since they are treated as | |
|
13
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1258 // minimums. These are different defaults because of the different |
|
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1259 // interpretation and are not ergonomically set. |
| 0 | 1260 if (FLAG_IS_DEFAULT(MarkSweepDeadRatio)) { |
|
13
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|
1261 FLAG_SET_DEFAULT(MarkSweepDeadRatio, 1); |
| 0 | 1262 } |
| 1263 if (FLAG_IS_DEFAULT(PermMarkSweepDeadRatio)) { | |
|
13
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|
1264 FLAG_SET_DEFAULT(PermMarkSweepDeadRatio, 5); |
| 0 | 1265 } |
| 1266 } | |
| 1267 } | |
| 1268 } | |
| 1269 | |
|
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1270 void Arguments::set_g1_gc_flags() { |
|
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1271 assert(UseG1GC, "Error"); |
|
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1272 // G1 is a server collector, setup the heap sizes accordingly. |
|
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1273 set_server_heap_size(); |
|
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|
1274 #ifdef COMPILER1 |
|
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1275 FastTLABRefill = false; |
|
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|
1276 #endif |
|
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1277 FLAG_SET_DEFAULT(ParallelGCThreads, |
|
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1278 Abstract_VM_Version::parallel_worker_threads()); |
|
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1279 if (ParallelGCThreads == 0) { |
|
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1280 FLAG_SET_DEFAULT(ParallelGCThreads, |
|
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1281 Abstract_VM_Version::parallel_worker_threads |
|
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|
1282 ()); |
|
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|
1283 } |
|
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|
1284 no_shared_spaces(); |
|
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1285 } |
|
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|
1286 |
|
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|
1287 void Arguments::set_server_heap_size() { |
|
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1288 if (FLAG_IS_DEFAULT(MaxHeapSize)) { |
|
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|
1289 const uint64_t reasonable_fraction = |
|
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|
1290 os::physical_memory() / DefaultMaxRAMFraction; |
|
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1291 const uint64_t maximum_size = (uint64_t) |
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1292 (FLAG_IS_DEFAULT(DefaultMaxRAM) && UseCompressedOops ? |
|
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1293 MIN2(max_heap_for_compressed_oops(), DefaultMaxRAM) : |
|
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1294 DefaultMaxRAM); |
|
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|
1295 size_t reasonable_max = |
|
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1296 (size_t) os::allocatable_physical_memory(reasonable_fraction); |
|
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1297 if (reasonable_max > maximum_size) { |
|
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|
1298 reasonable_max = maximum_size; |
|
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|
1299 } |
|
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1300 if (PrintGCDetails && Verbose) { |
|
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1301 // Cannot use gclog_or_tty yet. |
|
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1302 tty->print_cr(" Max heap size for server class platform " |
|
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|
1303 SIZE_FORMAT, reasonable_max); |
|
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|
1304 } |
|
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1305 // If the initial_heap_size has not been set with -Xms, |
|
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1306 // then set it as fraction of size of physical memory |
|
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1307 // respecting the maximum and minimum sizes of the heap. |
|
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1308 if (initial_heap_size() == 0) { |
|
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|
1309 const uint64_t reasonable_initial_fraction = |
|
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|
1310 os::physical_memory() / DefaultInitialRAMFraction; |
|
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|
1311 const size_t reasonable_initial = |
|
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|
1312 (size_t) os::allocatable_physical_memory(reasonable_initial_fraction); |
|
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1313 const size_t minimum_size = NewSize + OldSize; |
|
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1314 set_initial_heap_size(MAX2(MIN2(reasonable_initial, reasonable_max), |
|
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1315 minimum_size)); |
|
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1316 // Currently the minimum size and the initial heap sizes are the same. |
|
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1317 set_min_heap_size(initial_heap_size()); |
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1318 if (PrintGCDetails && Verbose) { |
|
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1319 // Cannot use gclog_or_tty yet. |
|
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1320 tty->print_cr(" Initial heap size for server class platform " |
|
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|
1321 SIZE_FORMAT, initial_heap_size()); |
|
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|
1322 } |
|
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1323 } else { |
|
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1324 // A minimum size was specified on the command line. Be sure |
|
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1325 // that the maximum size is consistent. |
|
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1326 if (initial_heap_size() > reasonable_max) { |
|
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1327 reasonable_max = initial_heap_size(); |
|
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1328 } |
|
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1329 } |
|
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1330 FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx) reasonable_max); |
|
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1331 } |
|
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1332 } |
|
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1333 |
| 0 | 1334 // This must be called after ergonomics because we want bytecode rewriting |
| 1335 // if the server compiler is used, or if UseSharedSpaces is disabled. | |
| 1336 void Arguments::set_bytecode_flags() { | |
| 1337 // Better not attempt to store into a read-only space. | |
| 1338 if (UseSharedSpaces) { | |
| 1339 FLAG_SET_DEFAULT(RewriteBytecodes, false); | |
| 1340 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
| 1341 } | |
| 1342 | |
| 1343 if (!RewriteBytecodes) { | |
| 1344 FLAG_SET_DEFAULT(RewriteFrequentPairs, false); | |
| 1345 } | |
| 1346 } | |
| 1347 | |
| 1348 // Aggressive optimization flags -XX:+AggressiveOpts | |
| 1349 void Arguments::set_aggressive_opts_flags() { | |
|
17
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|
1350 #ifdef COMPILER2 |
|
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|
1351 if (AggressiveOpts || !FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
|
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1352 if (FLAG_IS_DEFAULT(EliminateAutoBox)) { |
|
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|
1353 FLAG_SET_DEFAULT(EliminateAutoBox, true); |
|
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|
1354 } |
|
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|
1355 if (FLAG_IS_DEFAULT(AutoBoxCacheMax)) { |
|
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|
1356 FLAG_SET_DEFAULT(AutoBoxCacheMax, 20000); |
|
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1357 } |
|
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|
1358 |
|
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|
1359 // Feed the cache size setting into the JDK |
|
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|
1360 char buffer[1024]; |
|
513
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6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
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diff
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|
1361 sprintf(buffer, "java.lang.Integer.IntegerCache.high=" INTX_FORMAT, AutoBoxCacheMax); |
|
17
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|
1362 add_property(buffer); |
|
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|
1363 } |
| 65 | 1364 if (AggressiveOpts && FLAG_IS_DEFAULT(DoEscapeAnalysis)) { |
| 1365 FLAG_SET_DEFAULT(DoEscapeAnalysis, true); | |
| 1366 } | |
|
169
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1367 if (AggressiveOpts && FLAG_IS_DEFAULT(SpecialArraysEquals)) { |
|
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1368 FLAG_SET_DEFAULT(SpecialArraysEquals, true); |
|
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1369 } |
|
416
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|
1370 if (AggressiveOpts && FLAG_IS_DEFAULT(BiasedLockingStartupDelay)) { |
|
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1371 FLAG_SET_DEFAULT(BiasedLockingStartupDelay, 500); |
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1372 } |
|
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1373 #endif |
|
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1374 |
| 0 | 1375 if (AggressiveOpts) { |
| 61 | 1376 // Sample flag setting code |
| 1377 // if (FLAG_IS_DEFAULT(EliminateZeroing)) { | |
| 1378 // FLAG_SET_DEFAULT(EliminateZeroing, true); | |
| 1379 // } | |
| 0 | 1380 } |
| 1381 } | |
| 1382 | |
| 1383 //=========================================================================================================== | |
| 1384 // Parsing of java.compiler property | |
| 1385 | |
| 1386 void Arguments::process_java_compiler_argument(char* arg) { | |
| 1387 // For backwards compatibility, Djava.compiler=NONE or "" | |
| 1388 // causes us to switch to -Xint mode UNLESS -Xdebug | |
| 1389 // is also specified. | |
| 1390 if (strlen(arg) == 0 || strcasecmp(arg, "NONE") == 0) { | |
| 1391 set_java_compiler(true); // "-Djava.compiler[=...]" most recently seen. | |
| 1392 } | |
| 1393 } | |
| 1394 | |
| 1395 void Arguments::process_java_launcher_argument(const char* launcher, void* extra_info) { | |
| 1396 _sun_java_launcher = strdup(launcher); | |
| 1397 } | |
| 1398 | |
| 1399 bool Arguments::created_by_java_launcher() { | |
| 1400 assert(_sun_java_launcher != NULL, "property must have value"); | |
| 1401 return strcmp(DEFAULT_JAVA_LAUNCHER, _sun_java_launcher) != 0; | |
| 1402 } | |
| 1403 | |
| 1404 //=========================================================================================================== | |
| 1405 // Parsing of main arguments | |
| 1406 | |
| 1407 bool Arguments::verify_percentage(uintx value, const char* name) { | |
| 1408 if (value <= 100) { | |
| 1409 return true; | |
| 1410 } | |
| 1411 jio_fprintf(defaultStream::error_stream(), | |
| 1412 "%s of " UINTX_FORMAT " is invalid; must be between 0 and 100\n", | |
| 1413 name, value); | |
| 1414 return false; | |
| 1415 } | |
| 1416 | |
| 1417 static void set_serial_gc_flags() { | |
| 1418 FLAG_SET_DEFAULT(UseSerialGC, true); | |
| 1419 FLAG_SET_DEFAULT(UseParNewGC, false); | |
| 1420 FLAG_SET_DEFAULT(UseConcMarkSweepGC, false); | |
| 1421 FLAG_SET_DEFAULT(UseParallelGC, false); | |
| 1422 FLAG_SET_DEFAULT(UseParallelOldGC, false); | |
|
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1423 FLAG_SET_DEFAULT(UseG1GC, false); |
| 0 | 1424 } |
| 1425 | |
| 1426 static bool verify_serial_gc_flags() { | |
| 1427 return (UseSerialGC && | |
|
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1428 !(UseParNewGC || UseConcMarkSweepGC || UseG1GC || |
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1429 UseParallelGC || UseParallelOldGC)); |
| 0 | 1430 } |
| 1431 | |
|
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1432 // Check consistency of GC selection |
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1433 bool Arguments::check_gc_consistency() { |
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1434 bool status = true; |
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1435 // Ensure that the user has not selected conflicting sets |
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1436 // of collectors. [Note: this check is merely a user convenience; |
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1437 // collectors over-ride each other so that only a non-conflicting |
|
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1438 // set is selected; however what the user gets is not what they |
|
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1439 // may have expected from the combination they asked for. It's |
|
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1440 // better to reduce user confusion by not allowing them to |
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1441 // select conflicting combinations. |
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1442 uint i = 0; |
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1443 if (UseSerialGC) i++; |
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1444 if (UseConcMarkSweepGC || UseParNewGC) i++; |
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1445 if (UseParallelGC || UseParallelOldGC) i++; |
|
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1446 if (i > 1) { |
|
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1447 jio_fprintf(defaultStream::error_stream(), |
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1448 "Conflicting collector combinations in option list; " |
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1449 "please refer to the release notes for the combinations " |
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1450 "allowed\n"); |
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1451 status = false; |
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1452 } |
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1453 |
|
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1454 return status; |
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|
1455 } |
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|
1456 |
| 0 | 1457 // Check the consistency of vm_init_args |
| 1458 bool Arguments::check_vm_args_consistency() { | |
| 1459 // Method for adding checks for flag consistency. | |
| 1460 // The intent is to warn the user of all possible conflicts, | |
| 1461 // before returning an error. | |
| 1462 // Note: Needs platform-dependent factoring. | |
| 1463 bool status = true; | |
| 1464 | |
| 1465 #if ( (defined(COMPILER2) && defined(SPARC))) | |
| 1466 // NOTE: The call to VM_Version_init depends on the fact that VM_Version_init | |
| 1467 // on sparc doesn't require generation of a stub as is the case on, e.g., | |
| 1468 // x86. Normally, VM_Version_init must be called from init_globals in | |
| 1469 // init.cpp, which is called by the initial java thread *after* arguments | |
| 1470 // have been parsed. VM_Version_init gets called twice on sparc. | |
| 1471 extern void VM_Version_init(); | |
| 1472 VM_Version_init(); | |
| 1473 if (!VM_Version::has_v9()) { | |
| 1474 jio_fprintf(defaultStream::error_stream(), | |
| 1475 "V8 Machine detected, Server requires V9\n"); | |
| 1476 status = false; | |
| 1477 } | |
| 1478 #endif /* COMPILER2 && SPARC */ | |
| 1479 | |
| 1480 // Allow both -XX:-UseStackBanging and -XX:-UseBoundThreads in non-product | |
| 1481 // builds so the cost of stack banging can be measured. | |
| 1482 #if (defined(PRODUCT) && defined(SOLARIS)) | |
| 1483 if (!UseBoundThreads && !UseStackBanging) { | |
| 1484 jio_fprintf(defaultStream::error_stream(), | |
| 1485 "-UseStackBanging conflicts with -UseBoundThreads\n"); | |
| 1486 | |
| 1487 status = false; | |
| 1488 } | |
| 1489 #endif | |
| 1490 | |
| 1491 if (TLABRefillWasteFraction == 0) { | |
| 1492 jio_fprintf(defaultStream::error_stream(), | |
| 1493 "TLABRefillWasteFraction should be a denominator, " | |
| 1494 "not " SIZE_FORMAT "\n", | |
| 1495 TLABRefillWasteFraction); | |
| 1496 status = false; | |
| 1497 } | |
| 1498 | |
|
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1499 status = status && verify_percentage(MaxLiveObjectEvacuationRatio, |
| 0 | 1500 "MaxLiveObjectEvacuationRatio"); |
|
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1501 status = status && verify_percentage(AdaptiveSizePolicyWeight, |
| 0 | 1502 "AdaptiveSizePolicyWeight"); |
|
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1503 status = status && verify_percentage(AdaptivePermSizeWeight, "AdaptivePermSizeWeight"); |
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1504 status = status && verify_percentage(ThresholdTolerance, "ThresholdTolerance"); |
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1505 status = status && verify_percentage(MinHeapFreeRatio, "MinHeapFreeRatio"); |
|
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1506 status = status && verify_percentage(MaxHeapFreeRatio, "MaxHeapFreeRatio"); |
| 0 | 1507 |
| 1508 if (MinHeapFreeRatio > MaxHeapFreeRatio) { | |
| 1509 jio_fprintf(defaultStream::error_stream(), | |
| 1510 "MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or " | |
| 1511 "equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n", | |
| 1512 MinHeapFreeRatio, MaxHeapFreeRatio); | |
| 1513 status = false; | |
| 1514 } | |
| 1515 // Keeping the heap 100% free is hard ;-) so limit it to 99%. | |
| 1516 MinHeapFreeRatio = MIN2(MinHeapFreeRatio, (uintx) 99); | |
| 1517 | |
| 1518 if (FullGCALot && FLAG_IS_DEFAULT(MarkSweepAlwaysCompactCount)) { | |
| 1519 MarkSweepAlwaysCompactCount = 1; // Move objects every gc. | |
| 1520 } | |
| 1521 | |
|
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1522 if (UseParallelOldGC && ParallelOldGCSplitALot) { |
|
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1523 // Settings to encourage splitting. |
|
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1524 if (!FLAG_IS_CMDLINE(NewRatio)) { |
|
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|
1525 FLAG_SET_CMDLINE(intx, NewRatio, 2); |
|
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|
1526 } |
|
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|
1527 if (!FLAG_IS_CMDLINE(ScavengeBeforeFullGC)) { |
|
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|
1528 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); |
|
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|
1529 } |
|
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|
1530 } |
|
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|
1531 |
|
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|
1532 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
|
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|
1533 status = status && verify_percentage(GCTimeLimit, "GCTimeLimit"); |
| 0 | 1534 if (GCTimeLimit == 100) { |
| 1535 // Turn off gc-overhead-limit-exceeded checks | |
| 1536 FLAG_SET_DEFAULT(UseGCOverheadLimit, false); | |
| 1537 } | |
| 1538 | |
|
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1539 status = status && verify_percentage(GCHeapFreeLimit, "GCHeapFreeLimit"); |
| 0 | 1540 |
| 1541 // Check user specified sharing option conflict with Parallel GC | |
|
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1542 bool cannot_share = (UseConcMarkSweepGC || UseG1GC || UseParNewGC || |
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1543 UseParallelGC || UseParallelOldGC || |
| 0 | 1544 SOLARIS_ONLY(UseISM) NOT_SOLARIS(UseLargePages)); |
| 1545 | |
| 1546 if (cannot_share) { | |
| 1547 // Either force sharing on by forcing the other options off, or | |
| 1548 // force sharing off. | |
| 1549 if (DumpSharedSpaces || ForceSharedSpaces) { | |
| 1550 set_serial_gc_flags(); | |
| 1551 FLAG_SET_DEFAULT(SOLARIS_ONLY(UseISM) NOT_SOLARIS(UseLargePages), false); | |
| 1552 } else { | |
| 1553 no_shared_spaces(); | |
| 1554 } | |
| 1555 } | |
| 1556 | |
|
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|
1557 status = status && check_gc_consistency(); |
| 0 | 1558 |
| 1559 if (_has_alloc_profile) { | |
| 1560 if (UseParallelGC || UseParallelOldGC) { | |
| 1561 jio_fprintf(defaultStream::error_stream(), | |
| 1562 "error: invalid argument combination.\n" | |
| 1563 "Allocation profiling (-Xaprof) cannot be used together with " | |
| 1564 "Parallel GC (-XX:+UseParallelGC or -XX:+UseParallelOldGC).\n"); | |
| 1565 status = false; | |
| 1566 } | |
| 1567 if (UseConcMarkSweepGC) { | |
| 1568 jio_fprintf(defaultStream::error_stream(), | |
| 1569 "error: invalid argument combination.\n" | |
| 1570 "Allocation profiling (-Xaprof) cannot be used together with " | |
| 1571 "the CMS collector (-XX:+UseConcMarkSweepGC).\n"); | |
| 1572 status = false; | |
| 1573 } | |
| 1574 } | |
| 1575 | |
| 1576 if (CMSIncrementalMode) { | |
| 1577 if (!UseConcMarkSweepGC) { | |
| 1578 jio_fprintf(defaultStream::error_stream(), | |
| 1579 "error: invalid argument combination.\n" | |
| 1580 "The CMS collector (-XX:+UseConcMarkSweepGC) must be " | |
| 1581 "selected in order\nto use CMSIncrementalMode.\n"); | |
| 1582 status = false; | |
| 1583 } else { | |
|
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|
1584 status = status && verify_percentage(CMSIncrementalDutyCycle, |
| 0 | 1585 "CMSIncrementalDutyCycle"); |
|
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1586 status = status && verify_percentage(CMSIncrementalDutyCycleMin, |
| 0 | 1587 "CMSIncrementalDutyCycleMin"); |
|
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1588 status = status && verify_percentage(CMSIncrementalSafetyFactor, |
| 0 | 1589 "CMSIncrementalSafetyFactor"); |
|
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|
1590 status = status && verify_percentage(CMSIncrementalOffset, |
| 0 | 1591 "CMSIncrementalOffset"); |
|
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1592 status = status && verify_percentage(CMSExpAvgFactor, |
| 0 | 1593 "CMSExpAvgFactor"); |
| 1594 // If it was not set on the command line, set | |
| 1595 // CMSInitiatingOccupancyFraction to 1 so icms can initiate cycles early. | |
| 1596 if (CMSInitiatingOccupancyFraction < 0) { | |
| 1597 FLAG_SET_DEFAULT(CMSInitiatingOccupancyFraction, 1); | |
| 1598 } | |
| 1599 } | |
| 1600 } | |
| 1601 | |
| 1602 // CMS space iteration, which FLSVerifyAllHeapreferences entails, | |
| 1603 // insists that we hold the requisite locks so that the iteration is | |
| 1604 // MT-safe. For the verification at start-up and shut-down, we don't | |
| 1605 // yet have a good way of acquiring and releasing these locks, | |
| 1606 // which are not visible at the CollectedHeap level. We want to | |
| 1607 // be able to acquire these locks and then do the iteration rather | |
| 1608 // than just disable the lock verification. This will be fixed under | |
| 1609 // bug 4788986. | |
| 1610 if (UseConcMarkSweepGC && FLSVerifyAllHeapReferences) { | |
| 1611 if (VerifyGCStartAt == 0) { | |
| 1612 warning("Heap verification at start-up disabled " | |
| 1613 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
| 1614 VerifyGCStartAt = 1; // Disable verification at start-up | |
| 1615 } | |
| 1616 if (VerifyBeforeExit) { | |
| 1617 warning("Heap verification at shutdown disabled " | |
| 1618 "(due to current incompatibility with FLSVerifyAllHeapReferences)"); | |
| 1619 VerifyBeforeExit = false; // Disable verification at shutdown | |
| 1620 } | |
| 1621 } | |
| 1622 | |
| 1623 // Note: only executed in non-PRODUCT mode | |
| 1624 if (!UseAsyncConcMarkSweepGC && | |
| 1625 (ExplicitGCInvokesConcurrent || | |
| 1626 ExplicitGCInvokesConcurrentAndUnloadsClasses)) { | |
| 1627 jio_fprintf(defaultStream::error_stream(), | |
| 1628 "error: +ExplictGCInvokesConcurrent[AndUnloadsClasses] conflicts" | |
| 1629 " with -UseAsyncConcMarkSweepGC"); | |
| 1630 status = false; | |
| 1631 } | |
| 1632 | |
| 1633 return status; | |
| 1634 } | |
| 1635 | |
| 1636 bool Arguments::is_bad_option(const JavaVMOption* option, jboolean ignore, | |
| 1637 const char* option_type) { | |
| 1638 if (ignore) return false; | |
| 1639 | |
| 1640 const char* spacer = " "; | |
| 1641 if (option_type == NULL) { | |
| 1642 option_type = ++spacer; // Set both to the empty string. | |
| 1643 } | |
| 1644 | |
| 1645 if (os::obsolete_option(option)) { | |
| 1646 jio_fprintf(defaultStream::error_stream(), | |
| 1647 "Obsolete %s%soption: %s\n", option_type, spacer, | |
| 1648 option->optionString); | |
| 1649 return false; | |
| 1650 } else { | |
| 1651 jio_fprintf(defaultStream::error_stream(), | |
| 1652 "Unrecognized %s%soption: %s\n", option_type, spacer, | |
| 1653 option->optionString); | |
| 1654 return true; | |
| 1655 } | |
| 1656 } | |
| 1657 | |
| 1658 static const char* user_assertion_options[] = { | |
| 1659 "-da", "-ea", "-disableassertions", "-enableassertions", 0 | |
| 1660 }; | |
| 1661 | |
| 1662 static const char* system_assertion_options[] = { | |
| 1663 "-dsa", "-esa", "-disablesystemassertions", "-enablesystemassertions", 0 | |
| 1664 }; | |
| 1665 | |
| 1666 // Return true if any of the strings in null-terminated array 'names' matches. | |
| 1667 // If tail_allowed is true, then the tail must begin with a colon; otherwise, | |
| 1668 // the option must match exactly. | |
| 1669 static bool match_option(const JavaVMOption* option, const char** names, const char** tail, | |
| 1670 bool tail_allowed) { | |
| 1671 for (/* empty */; *names != NULL; ++names) { | |
| 1672 if (match_option(option, *names, tail)) { | |
| 1673 if (**tail == '\0' || tail_allowed && **tail == ':') { | |
| 1674 return true; | |
| 1675 } | |
| 1676 } | |
| 1677 } | |
| 1678 return false; | |
| 1679 } | |
| 1680 | |
| 1681 Arguments::ArgsRange Arguments::parse_memory_size(const char* s, | |
|
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|
1682 julong* long_arg, |
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1683 julong min_size) { |
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1684 if (!atomull(s, long_arg)) return arg_unreadable; |
| 0 | 1685 return check_memory_size(*long_arg, min_size); |
| 1686 } | |
| 1687 | |
| 1688 // Parse JavaVMInitArgs structure | |
| 1689 | |
| 1690 jint Arguments::parse_vm_init_args(const JavaVMInitArgs* args) { | |
| 1691 // For components of the system classpath. | |
| 1692 SysClassPath scp(Arguments::get_sysclasspath()); | |
| 1693 bool scp_assembly_required = false; | |
| 1694 | |
| 1695 // Save default settings for some mode flags | |
| 1696 Arguments::_AlwaysCompileLoopMethods = AlwaysCompileLoopMethods; | |
| 1697 Arguments::_UseOnStackReplacement = UseOnStackReplacement; | |
| 1698 Arguments::_ClipInlining = ClipInlining; | |
| 1699 Arguments::_BackgroundCompilation = BackgroundCompilation; | |
| 1700 Arguments::_Tier2CompileThreshold = Tier2CompileThreshold; | |
| 1701 | |
| 1702 // Parse JAVA_TOOL_OPTIONS environment variable (if present) | |
| 1703 jint result = parse_java_tool_options_environment_variable(&scp, &scp_assembly_required); | |
| 1704 if (result != JNI_OK) { | |
| 1705 return result; | |
| 1706 } | |
| 1707 | |
| 1708 // Parse JavaVMInitArgs structure passed in | |
| 1709 result = parse_each_vm_init_arg(args, &scp, &scp_assembly_required, COMMAND_LINE); | |
| 1710 if (result != JNI_OK) { | |
| 1711 return result; | |
| 1712 } | |
| 1713 | |
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1714 if (AggressiveOpts) { |
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1715 // Insert alt-rt.jar between user-specified bootclasspath |
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1716 // prefix and the default bootclasspath. os::set_boot_path() |
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1717 // uses meta_index_dir as the default bootclasspath directory. |
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1718 const char* altclasses_jar = "alt-rt.jar"; |
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1719 size_t altclasses_path_len = strlen(get_meta_index_dir()) + 1 + |
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1720 strlen(altclasses_jar); |
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1721 char* altclasses_path = NEW_C_HEAP_ARRAY(char, altclasses_path_len); |
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1722 strcpy(altclasses_path, get_meta_index_dir()); |
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1723 strcat(altclasses_path, altclasses_jar); |
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1724 scp.add_suffix_to_prefix(altclasses_path); |
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1725 scp_assembly_required = true; |
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1726 FREE_C_HEAP_ARRAY(char, altclasses_path); |
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1727 } |
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1728 |
| 0 | 1729 // Parse _JAVA_OPTIONS environment variable (if present) (mimics classic VM) |
| 1730 result = parse_java_options_environment_variable(&scp, &scp_assembly_required); | |
| 1731 if (result != JNI_OK) { | |
| 1732 return result; | |
| 1733 } | |
| 1734 | |
| 1735 // Do final processing now that all arguments have been parsed | |
| 1736 result = finalize_vm_init_args(&scp, scp_assembly_required); | |
| 1737 if (result != JNI_OK) { | |
| 1738 return result; | |
| 1739 } | |
| 1740 | |
| 1741 return JNI_OK; | |
| 1742 } | |
| 1743 | |
| 1744 jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args, | |
| 1745 SysClassPath* scp_p, | |
| 1746 bool* scp_assembly_required_p, | |
| 1747 FlagValueOrigin origin) { | |
| 1748 // Remaining part of option string | |
| 1749 const char* tail; | |
| 1750 | |
| 1751 // iterate over arguments | |
| 1752 for (int index = 0; index < args->nOptions; index++) { | |
| 1753 bool is_absolute_path = false; // for -agentpath vs -agentlib | |
| 1754 | |
| 1755 const JavaVMOption* option = args->options + index; | |
| 1756 | |
| 1757 if (!match_option(option, "-Djava.class.path", &tail) && | |
| 1758 !match_option(option, "-Dsun.java.command", &tail) && | |
| 1759 !match_option(option, "-Dsun.java.launcher", &tail)) { | |
| 1760 | |
| 1761 // add all jvm options to the jvm_args string. This string | |
| 1762 // is used later to set the java.vm.args PerfData string constant. | |
| 1763 // the -Djava.class.path and the -Dsun.java.command options are | |
| 1764 // omitted from jvm_args string as each have their own PerfData | |
| 1765 // string constant object. | |
| 1766 build_jvm_args(option->optionString); | |
| 1767 } | |
| 1768 | |
| 1769 // -verbose:[class/gc/jni] | |
| 1770 if (match_option(option, "-verbose", &tail)) { | |
| 1771 if (!strcmp(tail, ":class") || !strcmp(tail, "")) { | |
| 1772 FLAG_SET_CMDLINE(bool, TraceClassLoading, true); | |
| 1773 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
| 1774 } else if (!strcmp(tail, ":gc")) { | |
| 1775 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
| 1776 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
| 1777 } else if (!strcmp(tail, ":jni")) { | |
| 1778 FLAG_SET_CMDLINE(bool, PrintJNIResolving, true); | |
| 1779 } | |
| 1780 // -da / -ea / -disableassertions / -enableassertions | |
| 1781 // These accept an optional class/package name separated by a colon, e.g., | |
| 1782 // -da:java.lang.Thread. | |
| 1783 } else if (match_option(option, user_assertion_options, &tail, true)) { | |
| 1784 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
| 1785 if (*tail == '\0') { | |
| 1786 JavaAssertions::setUserClassDefault(enable); | |
| 1787 } else { | |
| 1788 assert(*tail == ':', "bogus match by match_option()"); | |
| 1789 JavaAssertions::addOption(tail + 1, enable); | |
| 1790 } | |
| 1791 // -dsa / -esa / -disablesystemassertions / -enablesystemassertions | |
| 1792 } else if (match_option(option, system_assertion_options, &tail, false)) { | |
| 1793 bool enable = option->optionString[1] == 'e'; // char after '-' is 'e' | |
| 1794 JavaAssertions::setSystemClassDefault(enable); | |
| 1795 // -bootclasspath: | |
| 1796 } else if (match_option(option, "-Xbootclasspath:", &tail)) { | |
| 1797 scp_p->reset_path(tail); | |
| 1798 *scp_assembly_required_p = true; | |
| 1799 // -bootclasspath/a: | |
| 1800 } else if (match_option(option, "-Xbootclasspath/a:", &tail)) { | |
| 1801 scp_p->add_suffix(tail); | |
| 1802 *scp_assembly_required_p = true; | |
| 1803 // -bootclasspath/p: | |
| 1804 } else if (match_option(option, "-Xbootclasspath/p:", &tail)) { | |
| 1805 scp_p->add_prefix(tail); | |
| 1806 *scp_assembly_required_p = true; | |
| 1807 // -Xrun | |
| 1808 } else if (match_option(option, "-Xrun", &tail)) { | |
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1809 if (tail != NULL) { |
| 0 | 1810 const char* pos = strchr(tail, ':'); |
| 1811 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
| 1812 char* name = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); | |
| 1813 name[len] = '\0'; | |
| 1814 | |
| 1815 char *options = NULL; | |
| 1816 if(pos != NULL) { | |
| 1817 size_t len2 = strlen(pos+1) + 1; // options start after ':'. Final zero must be copied. | |
| 1818 options = (char*)memcpy(NEW_C_HEAP_ARRAY(char, len2), pos+1, len2); | |
| 1819 } | |
| 1820 #ifdef JVMTI_KERNEL | |
| 1821 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
| 1822 warning("profiling and debugging agents are not supported with Kernel VM"); | |
| 1823 } else | |
| 1824 #endif // JVMTI_KERNEL | |
| 1825 add_init_library(name, options); | |
| 1826 } | |
| 1827 // -agentlib and -agentpath | |
| 1828 } else if (match_option(option, "-agentlib:", &tail) || | |
| 1829 (is_absolute_path = match_option(option, "-agentpath:", &tail))) { | |
| 1830 if(tail != NULL) { | |
| 1831 const char* pos = strchr(tail, '='); | |
| 1832 size_t len = (pos == NULL) ? strlen(tail) : pos - tail; | |
| 1833 char* name = strncpy(NEW_C_HEAP_ARRAY(char, len + 1), tail, len); | |
| 1834 name[len] = '\0'; | |
| 1835 | |
| 1836 char *options = NULL; | |
| 1837 if(pos != NULL) { | |
| 1838 options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(pos + 1) + 1), pos + 1); | |
| 1839 } | |
| 1840 #ifdef JVMTI_KERNEL | |
| 1841 if ((strcmp(name, "hprof") == 0) || (strcmp(name, "jdwp") == 0)) { | |
| 1842 warning("profiling and debugging agents are not supported with Kernel VM"); | |
| 1843 } else | |
| 1844 #endif // JVMTI_KERNEL | |
| 1845 add_init_agent(name, options, is_absolute_path); | |
| 1846 | |
| 1847 } | |
| 1848 // -javaagent | |
| 1849 } else if (match_option(option, "-javaagent:", &tail)) { | |
| 1850 if(tail != NULL) { | |
| 1851 char *options = strcpy(NEW_C_HEAP_ARRAY(char, strlen(tail) + 1), tail); | |
| 1852 add_init_agent("instrument", options, false); | |
| 1853 } | |
| 1854 // -Xnoclassgc | |
| 1855 } else if (match_option(option, "-Xnoclassgc", &tail)) { | |
| 1856 FLAG_SET_CMDLINE(bool, ClassUnloading, false); | |
| 1857 // -Xincgc: i-CMS | |
| 1858 } else if (match_option(option, "-Xincgc", &tail)) { | |
| 1859 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
| 1860 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, true); | |
| 1861 // -Xnoincgc: no i-CMS | |
| 1862 } else if (match_option(option, "-Xnoincgc", &tail)) { | |
| 1863 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
| 1864 FLAG_SET_CMDLINE(bool, CMSIncrementalMode, false); | |
| 1865 // -Xconcgc | |
| 1866 } else if (match_option(option, "-Xconcgc", &tail)) { | |
| 1867 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, true); | |
| 1868 // -Xnoconcgc | |
| 1869 } else if (match_option(option, "-Xnoconcgc", &tail)) { | |
| 1870 FLAG_SET_CMDLINE(bool, UseConcMarkSweepGC, false); | |
| 1871 // -Xbatch | |
| 1872 } else if (match_option(option, "-Xbatch", &tail)) { | |
| 1873 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
| 1874 // -Xmn for compatibility with other JVM vendors | |
| 1875 } else if (match_option(option, "-Xmn", &tail)) { | |
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1876 julong long_initial_eden_size = 0; |
| 0 | 1877 ArgsRange errcode = parse_memory_size(tail, &long_initial_eden_size, 1); |
| 1878 if (errcode != arg_in_range) { | |
| 1879 jio_fprintf(defaultStream::error_stream(), | |
| 1880 "Invalid initial eden size: %s\n", option->optionString); | |
| 1881 describe_range_error(errcode); | |
| 1882 return JNI_EINVAL; | |
| 1883 } | |
| 1884 FLAG_SET_CMDLINE(uintx, MaxNewSize, (size_t) long_initial_eden_size); | |
| 1885 FLAG_SET_CMDLINE(uintx, NewSize, (size_t) long_initial_eden_size); | |
| 1886 // -Xms | |
| 1887 } else if (match_option(option, "-Xms", &tail)) { | |
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1888 julong long_initial_heap_size = 0; |
| 0 | 1889 ArgsRange errcode = parse_memory_size(tail, &long_initial_heap_size, 1); |
| 1890 if (errcode != arg_in_range) { | |
| 1891 jio_fprintf(defaultStream::error_stream(), | |
| 1892 "Invalid initial heap size: %s\n", option->optionString); | |
| 1893 describe_range_error(errcode); | |
| 1894 return JNI_EINVAL; | |
| 1895 } | |
| 1896 set_initial_heap_size((size_t) long_initial_heap_size); | |
| 1897 // Currently the minimum size and the initial heap sizes are the same. | |
| 1898 set_min_heap_size(initial_heap_size()); | |
| 1899 // -Xmx | |
| 1900 } else if (match_option(option, "-Xmx", &tail)) { | |
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1901 julong long_max_heap_size = 0; |
| 0 | 1902 ArgsRange errcode = parse_memory_size(tail, &long_max_heap_size, 1); |
| 1903 if (errcode != arg_in_range) { | |
| 1904 jio_fprintf(defaultStream::error_stream(), | |
| 1905 "Invalid maximum heap size: %s\n", option->optionString); | |
| 1906 describe_range_error(errcode); | |
| 1907 return JNI_EINVAL; | |
| 1908 } | |
| 1909 FLAG_SET_CMDLINE(uintx, MaxHeapSize, (size_t) long_max_heap_size); | |
| 1910 // Xmaxf | |
| 1911 } else if (match_option(option, "-Xmaxf", &tail)) { | |
| 1912 int maxf = (int)(atof(tail) * 100); | |
| 1913 if (maxf < 0 || maxf > 100) { | |
| 1914 jio_fprintf(defaultStream::error_stream(), | |
| 1915 "Bad max heap free percentage size: %s\n", | |
| 1916 option->optionString); | |
| 1917 return JNI_EINVAL; | |
| 1918 } else { | |
| 1919 FLAG_SET_CMDLINE(uintx, MaxHeapFreeRatio, maxf); | |
| 1920 } | |
| 1921 // Xminf | |
| 1922 } else if (match_option(option, "-Xminf", &tail)) { | |
| 1923 int minf = (int)(atof(tail) * 100); | |
| 1924 if (minf < 0 || minf > 100) { | |
| 1925 jio_fprintf(defaultStream::error_stream(), | |
| 1926 "Bad min heap free percentage size: %s\n", | |
| 1927 option->optionString); | |
| 1928 return JNI_EINVAL; | |
| 1929 } else { | |
| 1930 FLAG_SET_CMDLINE(uintx, MinHeapFreeRatio, minf); | |
| 1931 } | |
| 1932 // -Xss | |
| 1933 } else if (match_option(option, "-Xss", &tail)) { | |
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1934 julong long_ThreadStackSize = 0; |
| 0 | 1935 ArgsRange errcode = parse_memory_size(tail, &long_ThreadStackSize, 1000); |
| 1936 if (errcode != arg_in_range) { | |
| 1937 jio_fprintf(defaultStream::error_stream(), | |
| 1938 "Invalid thread stack size: %s\n", option->optionString); | |
| 1939 describe_range_error(errcode); | |
| 1940 return JNI_EINVAL; | |
| 1941 } | |
| 1942 // Internally track ThreadStackSize in units of 1024 bytes. | |
| 1943 FLAG_SET_CMDLINE(intx, ThreadStackSize, | |
| 1944 round_to((int)long_ThreadStackSize, K) / K); | |
| 1945 // -Xoss | |
| 1946 } else if (match_option(option, "-Xoss", &tail)) { | |
| 1947 // HotSpot does not have separate native and Java stacks, ignore silently for compatibility | |
| 1948 // -Xmaxjitcodesize | |
| 1949 } else if (match_option(option, "-Xmaxjitcodesize", &tail)) { | |
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1950 julong long_ReservedCodeCacheSize = 0; |
| 0 | 1951 ArgsRange errcode = parse_memory_size(tail, &long_ReservedCodeCacheSize, |
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1952 (size_t)InitialCodeCacheSize); |
| 0 | 1953 if (errcode != arg_in_range) { |
| 1954 jio_fprintf(defaultStream::error_stream(), | |
| 1955 "Invalid maximum code cache size: %s\n", | |
| 1956 option->optionString); | |
| 1957 describe_range_error(errcode); | |
| 1958 return JNI_EINVAL; | |
| 1959 } | |
| 1960 FLAG_SET_CMDLINE(uintx, ReservedCodeCacheSize, (uintx)long_ReservedCodeCacheSize); | |
| 1961 // -green | |
| 1962 } else if (match_option(option, "-green", &tail)) { | |
| 1963 jio_fprintf(defaultStream::error_stream(), | |
| 1964 "Green threads support not available\n"); | |
| 1965 return JNI_EINVAL; | |
| 1966 // -native | |
| 1967 } else if (match_option(option, "-native", &tail)) { | |
| 1968 // HotSpot always uses native threads, ignore silently for compatibility | |
| 1969 // -Xsqnopause | |
| 1970 } else if (match_option(option, "-Xsqnopause", &tail)) { | |
| 1971 // EVM option, ignore silently for compatibility | |
| 1972 // -Xrs | |
| 1973 } else if (match_option(option, "-Xrs", &tail)) { | |
| 1974 // Classic/EVM option, new functionality | |
| 1975 FLAG_SET_CMDLINE(bool, ReduceSignalUsage, true); | |
| 1976 } else if (match_option(option, "-Xusealtsigs", &tail)) { | |
| 1977 // change default internal VM signals used - lower case for back compat | |
| 1978 FLAG_SET_CMDLINE(bool, UseAltSigs, true); | |
| 1979 // -Xoptimize | |
| 1980 } else if (match_option(option, "-Xoptimize", &tail)) { | |
| 1981 // EVM option, ignore silently for compatibility | |
| 1982 // -Xprof | |
| 1983 } else if (match_option(option, "-Xprof", &tail)) { | |
| 1984 #ifndef FPROF_KERNEL | |
| 1985 _has_profile = true; | |
| 1986 #else // FPROF_KERNEL | |
| 1987 // do we have to exit? | |
| 1988 warning("Kernel VM does not support flat profiling."); | |
| 1989 #endif // FPROF_KERNEL | |
| 1990 // -Xaprof | |
| 1991 } else if (match_option(option, "-Xaprof", &tail)) { | |
| 1992 _has_alloc_profile = true; | |
| 1993 // -Xconcurrentio | |
| 1994 } else if (match_option(option, "-Xconcurrentio", &tail)) { | |
| 1995 FLAG_SET_CMDLINE(bool, UseLWPSynchronization, true); | |
| 1996 FLAG_SET_CMDLINE(bool, BackgroundCompilation, false); | |
| 1997 FLAG_SET_CMDLINE(intx, DeferThrSuspendLoopCount, 1); | |
| 1998 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
| 1999 FLAG_SET_CMDLINE(uintx, NewSizeThreadIncrease, 16 * K); // 20Kb per thread added to new generation | |
| 2000 | |
| 2001 // -Xinternalversion | |
| 2002 } else if (match_option(option, "-Xinternalversion", &tail)) { | |
| 2003 jio_fprintf(defaultStream::output_stream(), "%s\n", | |
| 2004 VM_Version::internal_vm_info_string()); | |
| 2005 vm_exit(0); | |
| 2006 #ifndef PRODUCT | |
| 2007 // -Xprintflags | |
| 2008 } else if (match_option(option, "-Xprintflags", &tail)) { | |
| 2009 CommandLineFlags::printFlags(); | |
| 2010 vm_exit(0); | |
| 2011 #endif | |
| 2012 // -D | |
| 2013 } else if (match_option(option, "-D", &tail)) { | |
| 2014 if (!add_property(tail)) { | |
| 2015 return JNI_ENOMEM; | |
| 2016 } | |
| 2017 // Out of the box management support | |
| 2018 if (match_option(option, "-Dcom.sun.management", &tail)) { | |
| 2019 FLAG_SET_CMDLINE(bool, ManagementServer, true); | |
| 2020 } | |
| 2021 // -Xint | |
| 2022 } else if (match_option(option, "-Xint", &tail)) { | |
| 2023 set_mode_flags(_int); | |
| 2024 // -Xmixed | |
| 2025 } else if (match_option(option, "-Xmixed", &tail)) { | |
| 2026 set_mode_flags(_mixed); | |
| 2027 // -Xcomp | |
| 2028 } else if (match_option(option, "-Xcomp", &tail)) { | |
| 2029 // for testing the compiler; turn off all flags that inhibit compilation | |
| 2030 set_mode_flags(_comp); | |
| 2031 | |
| 2032 // -Xshare:dump | |
| 2033 } else if (match_option(option, "-Xshare:dump", &tail)) { | |
| 2034 #ifdef TIERED | |
| 2035 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
| 2036 set_mode_flags(_int); // Prevent compilation, which creates objects | |
| 2037 #elif defined(COMPILER2) | |
| 2038 vm_exit_during_initialization( | |
| 2039 "Dumping a shared archive is not supported on the Server JVM.", NULL); | |
| 2040 #elif defined(KERNEL) | |
| 2041 vm_exit_during_initialization( | |
| 2042 "Dumping a shared archive is not supported on the Kernel JVM.", NULL); | |
| 2043 #else | |
| 2044 FLAG_SET_CMDLINE(bool, DumpSharedSpaces, true); | |
| 2045 set_mode_flags(_int); // Prevent compilation, which creates objects | |
| 2046 #endif | |
| 2047 // -Xshare:on | |
| 2048 } else if (match_option(option, "-Xshare:on", &tail)) { | |
| 2049 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
| 2050 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, true); | |
| 2051 #ifdef TIERED | |
| 2052 FLAG_SET_CMDLINE(bool, ForceSharedSpaces, true); | |
| 2053 #endif // TIERED | |
| 2054 // -Xshare:auto | |
| 2055 } else if (match_option(option, "-Xshare:auto", &tail)) { | |
| 2056 FLAG_SET_CMDLINE(bool, UseSharedSpaces, true); | |
| 2057 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
| 2058 // -Xshare:off | |
| 2059 } else if (match_option(option, "-Xshare:off", &tail)) { | |
| 2060 FLAG_SET_CMDLINE(bool, UseSharedSpaces, false); | |
| 2061 FLAG_SET_CMDLINE(bool, RequireSharedSpaces, false); | |
| 2062 | |
| 2063 // -Xverify | |
| 2064 } else if (match_option(option, "-Xverify", &tail)) { | |
| 2065 if (strcmp(tail, ":all") == 0 || strcmp(tail, "") == 0) { | |
| 2066 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, true); | |
| 2067 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
| 2068 } else if (strcmp(tail, ":remote") == 0) { | |
| 2069 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
| 2070 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, true); | |
| 2071 } else if (strcmp(tail, ":none") == 0) { | |
| 2072 FLAG_SET_CMDLINE(bool, BytecodeVerificationLocal, false); | |
| 2073 FLAG_SET_CMDLINE(bool, BytecodeVerificationRemote, false); | |
| 2074 } else if (is_bad_option(option, args->ignoreUnrecognized, "verification")) { | |
| 2075 return JNI_EINVAL; | |
| 2076 } | |
| 2077 // -Xdebug | |
| 2078 } else if (match_option(option, "-Xdebug", &tail)) { | |
| 2079 // note this flag has been used, then ignore | |
| 2080 set_xdebug_mode(true); | |
| 2081 // -Xnoagent | |
| 2082 } else if (match_option(option, "-Xnoagent", &tail)) { | |
| 2083 // For compatibility with classic. HotSpot refuses to load the old style agent.dll. | |
| 2084 } else if (match_option(option, "-Xboundthreads", &tail)) { | |
| 2085 // Bind user level threads to kernel threads (Solaris only) | |
| 2086 FLAG_SET_CMDLINE(bool, UseBoundThreads, true); | |
| 2087 } else if (match_option(option, "-Xloggc:", &tail)) { | |
| 2088 // Redirect GC output to the file. -Xloggc:<filename> | |
| 2089 // ostream_init_log(), when called will use this filename | |
| 2090 // to initialize a fileStream. | |
| 2091 _gc_log_filename = strdup(tail); | |
| 2092 FLAG_SET_CMDLINE(bool, PrintGC, true); | |
| 2093 FLAG_SET_CMDLINE(bool, PrintGCTimeStamps, true); | |
| 2094 FLAG_SET_CMDLINE(bool, TraceClassUnloading, true); | |
| 2095 | |
| 2096 // JNI hooks | |
| 2097 } else if (match_option(option, "-Xcheck", &tail)) { | |
| 2098 if (!strcmp(tail, ":jni")) { | |
| 2099 CheckJNICalls = true; | |
| 2100 } else if (is_bad_option(option, args->ignoreUnrecognized, | |
| 2101 "check")) { | |
| 2102 return JNI_EINVAL; | |
| 2103 } | |
| 2104 } else if (match_option(option, "vfprintf", &tail)) { | |
| 2105 _vfprintf_hook = CAST_TO_FN_PTR(vfprintf_hook_t, option->extraInfo); | |
| 2106 } else if (match_option(option, "exit", &tail)) { | |
| 2107 _exit_hook = CAST_TO_FN_PTR(exit_hook_t, option->extraInfo); | |
| 2108 } else if (match_option(option, "abort", &tail)) { | |
| 2109 _abort_hook = CAST_TO_FN_PTR(abort_hook_t, option->extraInfo); | |
| 2110 // -XX:+AggressiveHeap | |
| 2111 } else if (match_option(option, "-XX:+AggressiveHeap", &tail)) { | |
| 2112 | |
| 2113 // This option inspects the machine and attempts to set various | |
| 2114 // parameters to be optimal for long-running, memory allocation | |
| 2115 // intensive jobs. It is intended for machines with large | |
| 2116 // amounts of cpu and memory. | |
| 2117 | |
| 2118 // initHeapSize is needed since _initial_heap_size is 4 bytes on a 32 bit | |
| 2119 // VM, but we may not be able to represent the total physical memory | |
| 2120 // available (like having 8gb of memory on a box but using a 32bit VM). | |
| 2121 // Thus, we need to make sure we're using a julong for intermediate | |
| 2122 // calculations. | |
| 2123 julong initHeapSize; | |
| 2124 julong total_memory = os::physical_memory(); | |
| 2125 | |
| 2126 if (total_memory < (julong)256*M) { | |
| 2127 jio_fprintf(defaultStream::error_stream(), | |
| 2128 "You need at least 256mb of memory to use -XX:+AggressiveHeap\n"); | |
| 2129 vm_exit(1); | |
| 2130 } | |
| 2131 | |
| 2132 // The heap size is half of available memory, or (at most) | |
| 2133 // all of possible memory less 160mb (leaving room for the OS | |
| 2134 // when using ISM). This is the maximum; because adaptive sizing | |
| 2135 // is turned on below, the actual space used may be smaller. | |
| 2136 | |
| 2137 initHeapSize = MIN2(total_memory / (julong)2, | |
| 2138 total_memory - (julong)160*M); | |
| 2139 | |
| 2140 // Make sure that if we have a lot of memory we cap the 32 bit | |
| 2141 // process space. The 64bit VM version of this function is a nop. | |
| 2142 initHeapSize = os::allocatable_physical_memory(initHeapSize); | |
| 2143 | |
| 2144 // The perm gen is separate but contiguous with the | |
| 2145 // object heap (and is reserved with it) so subtract it | |
| 2146 // from the heap size. | |
| 2147 if (initHeapSize > MaxPermSize) { | |
| 2148 initHeapSize = initHeapSize - MaxPermSize; | |
| 2149 } else { | |
| 2150 warning("AggressiveHeap and MaxPermSize values may conflict"); | |
| 2151 } | |
| 2152 | |
| 2153 if (FLAG_IS_DEFAULT(MaxHeapSize)) { | |
| 2154 FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize); | |
| 2155 set_initial_heap_size(MaxHeapSize); | |
| 2156 // Currently the minimum size and the initial heap sizes are the same. | |
| 2157 set_min_heap_size(initial_heap_size()); | |
| 2158 } | |
| 2159 if (FLAG_IS_DEFAULT(NewSize)) { | |
| 2160 // Make the young generation 3/8ths of the total heap. | |
| 2161 FLAG_SET_CMDLINE(uintx, NewSize, | |
| 2162 ((julong)MaxHeapSize / (julong)8) * (julong)3); | |
| 2163 FLAG_SET_CMDLINE(uintx, MaxNewSize, NewSize); | |
| 2164 } | |
| 2165 | |
| 2166 FLAG_SET_DEFAULT(UseLargePages, true); | |
| 2167 | |
| 2168 // Increase some data structure sizes for efficiency | |
| 2169 FLAG_SET_CMDLINE(uintx, BaseFootPrintEstimate, MaxHeapSize); | |
| 2170 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
| 2171 FLAG_SET_CMDLINE(uintx, TLABSize, 256*K); | |
| 2172 | |
| 2173 // See the OldPLABSize comment below, but replace 'after promotion' | |
| 2174 // with 'after copying'. YoungPLABSize is the size of the survivor | |
| 2175 // space per-gc-thread buffers. The default is 4kw. | |
| 2176 FLAG_SET_CMDLINE(uintx, YoungPLABSize, 256*K); // Note: this is in words | |
| 2177 | |
| 2178 // OldPLABSize is the size of the buffers in the old gen that | |
| 2179 // UseParallelGC uses to promote live data that doesn't fit in the | |
| 2180 // survivor spaces. At any given time, there's one for each gc thread. | |
| 2181 // The default size is 1kw. These buffers are rarely used, since the | |
| 2182 // survivor spaces are usually big enough. For specjbb, however, there | |
| 2183 // are occasions when there's lots of live data in the young gen | |
| 2184 // and we end up promoting some of it. We don't have a definite | |
| 2185 // explanation for why bumping OldPLABSize helps, but the theory | |
| 2186 // is that a bigger PLAB results in retaining something like the | |
| 2187 // original allocation order after promotion, which improves mutator | |
| 2188 // locality. A minor effect may be that larger PLABs reduce the | |
| 2189 // number of PLAB allocation events during gc. The value of 8kw | |
| 2190 // was arrived at by experimenting with specjbb. | |
| 2191 FLAG_SET_CMDLINE(uintx, OldPLABSize, 8*K); // Note: this is in words | |
| 2192 | |
| 2193 // CompilationPolicyChoice=0 causes the server compiler to adopt | |
| 2194 // a more conservative which-method-do-I-compile policy when one | |
| 2195 // of the counters maintained by the interpreter trips. The | |
| 2196 // result is reduced startup time and improved specjbb and | |
| 2197 // alacrity performance. Zero is the default, but we set it | |
| 2198 // explicitly here in case the default changes. | |
| 2199 // See runtime/compilationPolicy.*. | |
| 2200 FLAG_SET_CMDLINE(intx, CompilationPolicyChoice, 0); | |
| 2201 | |
| 2202 // Enable parallel GC and adaptive generation sizing | |
| 2203 FLAG_SET_CMDLINE(bool, UseParallelGC, true); | |
|
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2204 FLAG_SET_DEFAULT(ParallelGCThreads, |
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2205 Abstract_VM_Version::parallel_worker_threads()); |
| 0 | 2206 |
| 2207 // Encourage steady state memory management | |
| 2208 FLAG_SET_CMDLINE(uintx, ThresholdTolerance, 100); | |
| 2209 | |
| 2210 // This appears to improve mutator locality | |
| 2211 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
| 2212 | |
| 2213 // Get around early Solaris scheduling bug | |
| 2214 // (affinity vs other jobs on system) | |
| 2215 // but disallow DR and offlining (5008695). | |
| 2216 FLAG_SET_CMDLINE(bool, BindGCTaskThreadsToCPUs, true); | |
| 2217 | |
| 2218 } else if (match_option(option, "-XX:+NeverTenure", &tail)) { | |
| 2219 // The last option must always win. | |
| 2220 FLAG_SET_CMDLINE(bool, AlwaysTenure, false); | |
| 2221 FLAG_SET_CMDLINE(bool, NeverTenure, true); | |
| 2222 } else if (match_option(option, "-XX:+AlwaysTenure", &tail)) { | |
| 2223 // The last option must always win. | |
| 2224 FLAG_SET_CMDLINE(bool, NeverTenure, false); | |
| 2225 FLAG_SET_CMDLINE(bool, AlwaysTenure, true); | |
| 2226 } else if (match_option(option, "-XX:+CMSPermGenSweepingEnabled", &tail) || | |
| 2227 match_option(option, "-XX:-CMSPermGenSweepingEnabled", &tail)) { | |
| 2228 jio_fprintf(defaultStream::error_stream(), | |
| 2229 "Please use CMSClassUnloadingEnabled in place of " | |
| 2230 "CMSPermGenSweepingEnabled in the future\n"); | |
| 2231 } else if (match_option(option, "-XX:+UseGCTimeLimit", &tail)) { | |
| 2232 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, true); | |
| 2233 jio_fprintf(defaultStream::error_stream(), | |
| 2234 "Please use -XX:+UseGCOverheadLimit in place of " | |
| 2235 "-XX:+UseGCTimeLimit in the future\n"); | |
| 2236 } else if (match_option(option, "-XX:-UseGCTimeLimit", &tail)) { | |
| 2237 FLAG_SET_CMDLINE(bool, UseGCOverheadLimit, false); | |
| 2238 jio_fprintf(defaultStream::error_stream(), | |
| 2239 "Please use -XX:-UseGCOverheadLimit in place of " | |
| 2240 "-XX:-UseGCTimeLimit in the future\n"); | |
| 2241 // The TLE options are for compatibility with 1.3 and will be | |
| 2242 // removed without notice in a future release. These options | |
| 2243 // are not to be documented. | |
| 2244 } else if (match_option(option, "-XX:MaxTLERatio=", &tail)) { | |
| 2245 // No longer used. | |
| 2246 } else if (match_option(option, "-XX:+ResizeTLE", &tail)) { | |
| 2247 FLAG_SET_CMDLINE(bool, ResizeTLAB, true); | |
| 2248 } else if (match_option(option, "-XX:-ResizeTLE", &tail)) { | |
| 2249 FLAG_SET_CMDLINE(bool, ResizeTLAB, false); | |
| 2250 } else if (match_option(option, "-XX:+PrintTLE", &tail)) { | |
| 2251 FLAG_SET_CMDLINE(bool, PrintTLAB, true); | |
| 2252 } else if (match_option(option, "-XX:-PrintTLE", &tail)) { | |
| 2253 FLAG_SET_CMDLINE(bool, PrintTLAB, false); | |
| 2254 } else if (match_option(option, "-XX:TLEFragmentationRatio=", &tail)) { | |
| 2255 // No longer used. | |
| 2256 } else if (match_option(option, "-XX:TLESize=", &tail)) { | |
|
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2257 julong long_tlab_size = 0; |
| 0 | 2258 ArgsRange errcode = parse_memory_size(tail, &long_tlab_size, 1); |
| 2259 if (errcode != arg_in_range) { | |
| 2260 jio_fprintf(defaultStream::error_stream(), | |
| 2261 "Invalid TLAB size: %s\n", option->optionString); | |
| 2262 describe_range_error(errcode); | |
| 2263 return JNI_EINVAL; | |
| 2264 } | |
| 2265 FLAG_SET_CMDLINE(uintx, TLABSize, long_tlab_size); | |
| 2266 } else if (match_option(option, "-XX:TLEThreadRatio=", &tail)) { | |
| 2267 // No longer used. | |
| 2268 } else if (match_option(option, "-XX:+UseTLE", &tail)) { | |
| 2269 FLAG_SET_CMDLINE(bool, UseTLAB, true); | |
| 2270 } else if (match_option(option, "-XX:-UseTLE", &tail)) { | |
| 2271 FLAG_SET_CMDLINE(bool, UseTLAB, false); | |
| 2272 SOLARIS_ONLY( | |
| 2273 } else if (match_option(option, "-XX:+UsePermISM", &tail)) { | |
| 2274 warning("-XX:+UsePermISM is obsolete."); | |
| 2275 FLAG_SET_CMDLINE(bool, UseISM, true); | |
| 2276 } else if (match_option(option, "-XX:-UsePermISM", &tail)) { | |
| 2277 FLAG_SET_CMDLINE(bool, UseISM, false); | |
| 2278 ) | |
| 2279 } else if (match_option(option, "-XX:+DisplayVMOutputToStderr", &tail)) { | |
| 2280 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, false); | |
| 2281 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, true); | |
| 2282 } else if (match_option(option, "-XX:+DisplayVMOutputToStdout", &tail)) { | |
| 2283 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStderr, false); | |
| 2284 FLAG_SET_CMDLINE(bool, DisplayVMOutputToStdout, true); | |
| 2285 } else if (match_option(option, "-XX:+ExtendedDTraceProbes", &tail)) { | |
| 2286 #ifdef SOLARIS | |
| 2287 FLAG_SET_CMDLINE(bool, ExtendedDTraceProbes, true); | |
| 2288 FLAG_SET_CMDLINE(bool, DTraceMethodProbes, true); | |
| 2289 FLAG_SET_CMDLINE(bool, DTraceAllocProbes, true); | |
| 2290 FLAG_SET_CMDLINE(bool, DTraceMonitorProbes, true); | |
| 2291 #else // ndef SOLARIS | |
| 2292 jio_fprintf(defaultStream::error_stream(), | |
| 2293 "ExtendedDTraceProbes flag is only applicable on Solaris\n"); | |
| 2294 return JNI_EINVAL; | |
| 2295 #endif // ndef SOLARIS | |
| 2296 } else | |
| 2297 #ifdef ASSERT | |
| 2298 if (match_option(option, "-XX:+FullGCALot", &tail)) { | |
| 2299 FLAG_SET_CMDLINE(bool, FullGCALot, true); | |
| 2300 // disable scavenge before parallel mark-compact | |
| 2301 FLAG_SET_CMDLINE(bool, ScavengeBeforeFullGC, false); | |
| 2302 } else | |
| 2303 #endif | |
| 2304 if (match_option(option, "-XX:ParCMSPromoteBlocksToClaim=", &tail)) { | |
| 2305 julong cms_blocks_to_claim = (julong)atol(tail); | |
| 2306 FLAG_SET_CMDLINE(uintx, CMSParPromoteBlocksToClaim, cms_blocks_to_claim); | |
| 2307 jio_fprintf(defaultStream::error_stream(), | |
| 2308 "Please use -XX:CMSParPromoteBlocksToClaim in place of " | |
| 2309 "-XX:ParCMSPromoteBlocksToClaim in the future\n"); | |
| 2310 } else | |
| 2311 if (match_option(option, "-XX:ParallelGCOldGenAllocBufferSize=", &tail)) { | |
|
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|
2312 julong old_plab_size = 0; |
| 0 | 2313 ArgsRange errcode = parse_memory_size(tail, &old_plab_size, 1); |
| 2314 if (errcode != arg_in_range) { | |
| 2315 jio_fprintf(defaultStream::error_stream(), | |
| 2316 "Invalid old PLAB size: %s\n", option->optionString); | |
| 2317 describe_range_error(errcode); | |
| 2318 return JNI_EINVAL; | |
| 2319 } | |
|
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|
2320 FLAG_SET_CMDLINE(uintx, OldPLABSize, old_plab_size); |
| 0 | 2321 jio_fprintf(defaultStream::error_stream(), |
| 2322 "Please use -XX:OldPLABSize in place of " | |
| 2323 "-XX:ParallelGCOldGenAllocBufferSize in the future\n"); | |
| 2324 } else | |
| 2325 if (match_option(option, "-XX:ParallelGCToSpaceAllocBufferSize=", &tail)) { | |
|
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2326 julong young_plab_size = 0; |
| 0 | 2327 ArgsRange errcode = parse_memory_size(tail, &young_plab_size, 1); |
| 2328 if (errcode != arg_in_range) { | |
| 2329 jio_fprintf(defaultStream::error_stream(), | |
| 2330 "Invalid young PLAB size: %s\n", option->optionString); | |
| 2331 describe_range_error(errcode); | |
| 2332 return JNI_EINVAL; | |
| 2333 } | |
|
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2334 FLAG_SET_CMDLINE(uintx, YoungPLABSize, young_plab_size); |
| 0 | 2335 jio_fprintf(defaultStream::error_stream(), |
| 2336 "Please use -XX:YoungPLABSize in place of " | |
| 2337 "-XX:ParallelGCToSpaceAllocBufferSize in the future\n"); | |
| 2338 } else | |
| 2339 if (match_option(option, "-XX:", &tail)) { // -XX:xxxx | |
| 2340 // Skip -XX:Flags= since that case has already been handled | |
| 2341 if (strncmp(tail, "Flags=", strlen("Flags=")) != 0) { | |
| 2342 if (!process_argument(tail, args->ignoreUnrecognized, origin)) { | |
| 2343 return JNI_EINVAL; | |
| 2344 } | |
| 2345 } | |
| 2346 // Unknown option | |
| 2347 } else if (is_bad_option(option, args->ignoreUnrecognized)) { | |
| 2348 return JNI_ERR; | |
| 2349 } | |
| 2350 } | |
|
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2351 // Change the default value for flags which have different default values |
|
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2352 // when working with older JDKs. |
|
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2353 if (JDK_Version::current().compare_major(6) <= 0 && |
|
171e581e8161
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2354 FLAG_IS_DEFAULT(UseVMInterruptibleIO)) { |
|
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2355 FLAG_SET_DEFAULT(UseVMInterruptibleIO, true); |
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|
2356 } |
| 0 | 2357 return JNI_OK; |
| 2358 } | |
| 2359 | |
| 2360 jint Arguments::finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_required) { | |
| 2361 // This must be done after all -D arguments have been processed. | |
| 2362 scp_p->expand_endorsed(); | |
| 2363 | |
| 2364 if (scp_assembly_required || scp_p->get_endorsed() != NULL) { | |
| 2365 // Assemble the bootclasspath elements into the final path. | |
| 2366 Arguments::set_sysclasspath(scp_p->combined_path()); | |
| 2367 } | |
| 2368 | |
| 2369 // This must be done after all arguments have been processed. | |
| 2370 // java_compiler() true means set to "NONE" or empty. | |
| 2371 if (java_compiler() && !xdebug_mode()) { | |
| 2372 // For backwards compatibility, we switch to interpreted mode if | |
| 2373 // -Djava.compiler="NONE" or "" is specified AND "-Xdebug" was | |
| 2374 // not specified. | |
| 2375 set_mode_flags(_int); | |
| 2376 } | |
| 2377 if (CompileThreshold == 0) { | |
| 2378 set_mode_flags(_int); | |
| 2379 } | |
| 2380 | |
| 2381 #ifdef TIERED | |
| 2382 // If we are using tiered compilation in the tiered vm then c1 will | |
| 2383 // do the profiling and we don't want to waste that time in the | |
| 2384 // interpreter. | |
| 2385 if (TieredCompilation) { | |
| 2386 ProfileInterpreter = false; | |
| 2387 } else { | |
| 2388 // Since we are running vanilla server we must adjust the compile threshold | |
| 2389 // unless the user has already adjusted it because the default threshold assumes | |
| 2390 // we will run tiered. | |
| 2391 | |
| 2392 if (FLAG_IS_DEFAULT(CompileThreshold)) { | |
| 2393 CompileThreshold = Tier2CompileThreshold; | |
| 2394 } | |
| 2395 } | |
| 2396 #endif // TIERED | |
| 2397 | |
| 2398 #ifndef COMPILER2 | |
| 2399 // Don't degrade server performance for footprint | |
| 2400 if (FLAG_IS_DEFAULT(UseLargePages) && | |
| 2401 MaxHeapSize < LargePageHeapSizeThreshold) { | |
| 2402 // No need for large granularity pages w/small heaps. | |
| 2403 // Note that large pages are enabled/disabled for both the | |
| 2404 // Java heap and the code cache. | |
| 2405 FLAG_SET_DEFAULT(UseLargePages, false); | |
| 2406 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseMPSS, false)); | |
| 2407 SOLARIS_ONLY(FLAG_SET_DEFAULT(UseISM, false)); | |
| 2408 } | |
|
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2409 |
| 0 | 2410 #else |
| 2411 if (!FLAG_IS_DEFAULT(OptoLoopAlignment) && FLAG_IS_DEFAULT(MaxLoopPad)) { | |
| 2412 FLAG_SET_DEFAULT(MaxLoopPad, OptoLoopAlignment-1); | |
| 2413 } | |
|
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2414 // Temporary disable bulk zeroing reduction with G1. See CR 6627983. |
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2415 if (UseG1GC) { |
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2416 FLAG_SET_DEFAULT(ReduceBulkZeroing, false); |
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2417 } |
| 0 | 2418 #endif |
| 2419 | |
| 2420 if (!check_vm_args_consistency()) { | |
| 2421 return JNI_ERR; | |
| 2422 } | |
| 2423 | |
| 2424 return JNI_OK; | |
| 2425 } | |
| 2426 | |
| 2427 jint Arguments::parse_java_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2428 return parse_options_environment_variable("_JAVA_OPTIONS", scp_p, | |
| 2429 scp_assembly_required_p); | |
| 2430 } | |
| 2431 | |
| 2432 jint Arguments::parse_java_tool_options_environment_variable(SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2433 return parse_options_environment_variable("JAVA_TOOL_OPTIONS", scp_p, | |
| 2434 scp_assembly_required_p); | |
| 2435 } | |
| 2436 | |
| 2437 jint Arguments::parse_options_environment_variable(const char* name, SysClassPath* scp_p, bool* scp_assembly_required_p) { | |
| 2438 const int N_MAX_OPTIONS = 64; | |
| 2439 const int OPTION_BUFFER_SIZE = 1024; | |
| 2440 char buffer[OPTION_BUFFER_SIZE]; | |
| 2441 | |
| 2442 // The variable will be ignored if it exceeds the length of the buffer. | |
| 2443 // Don't check this variable if user has special privileges | |
| 2444 // (e.g. unix su command). | |
| 2445 if (os::getenv(name, buffer, sizeof(buffer)) && | |
| 2446 !os::have_special_privileges()) { | |
| 2447 JavaVMOption options[N_MAX_OPTIONS]; // Construct option array | |
| 2448 jio_fprintf(defaultStream::error_stream(), | |
| 2449 "Picked up %s: %s\n", name, buffer); | |
| 2450 char* rd = buffer; // pointer to the input string (rd) | |
| 2451 int i; | |
| 2452 for (i = 0; i < N_MAX_OPTIONS;) { // repeat for all options in the input string | |
| 2453 while (isspace(*rd)) rd++; // skip whitespace | |
| 2454 if (*rd == 0) break; // we re done when the input string is read completely | |
| 2455 | |
| 2456 // The output, option string, overwrites the input string. | |
| 2457 // Because of quoting, the pointer to the option string (wrt) may lag the pointer to | |
| 2458 // input string (rd). | |
| 2459 char* wrt = rd; | |
| 2460 | |
| 2461 options[i++].optionString = wrt; // Fill in option | |
| 2462 while (*rd != 0 && !isspace(*rd)) { // unquoted strings terminate with a space or NULL | |
| 2463 if (*rd == '\'' || *rd == '"') { // handle a quoted string | |
| 2464 int quote = *rd; // matching quote to look for | |
| 2465 rd++; // don't copy open quote | |
| 2466 while (*rd != quote) { // include everything (even spaces) up until quote | |
| 2467 if (*rd == 0) { // string termination means unmatched string | |
| 2468 jio_fprintf(defaultStream::error_stream(), | |
| 2469 "Unmatched quote in %s\n", name); | |
| 2470 return JNI_ERR; | |
| 2471 } | |
| 2472 *wrt++ = *rd++; // copy to option string | |
| 2473 } | |
| 2474 rd++; // don't copy close quote | |
| 2475 } else { | |
| 2476 *wrt++ = *rd++; // copy to option string | |
| 2477 } | |
| 2478 } | |
| 2479 // Need to check if we're done before writing a NULL, | |
| 2480 // because the write could be to the byte that rd is pointing to. | |
| 2481 if (*rd++ == 0) { | |
| 2482 *wrt = 0; | |
| 2483 break; | |
| 2484 } | |
| 2485 *wrt = 0; // Zero terminate option | |
| 2486 } | |
| 2487 // Construct JavaVMInitArgs structure and parse as if it was part of the command line | |
| 2488 JavaVMInitArgs vm_args; | |
| 2489 vm_args.version = JNI_VERSION_1_2; | |
| 2490 vm_args.options = options; | |
| 2491 vm_args.nOptions = i; | |
| 564 | 2492 vm_args.ignoreUnrecognized = IgnoreUnrecognizedVMOptions; |
| 0 | 2493 |
| 2494 if (PrintVMOptions) { | |
| 2495 const char* tail; | |
| 2496 for (int i = 0; i < vm_args.nOptions; i++) { | |
| 2497 const JavaVMOption *option = vm_args.options + i; | |
| 2498 if (match_option(option, "-XX:", &tail)) { | |
| 2499 logOption(tail); | |
| 2500 } | |
| 2501 } | |
| 2502 } | |
| 2503 | |
| 2504 return(parse_each_vm_init_arg(&vm_args, scp_p, scp_assembly_required_p, ENVIRON_VAR)); | |
| 2505 } | |
| 2506 return JNI_OK; | |
| 2507 } | |
| 2508 | |
| 2509 // Parse entry point called from JNI_CreateJavaVM | |
| 2510 | |
| 2511 jint Arguments::parse(const JavaVMInitArgs* args) { | |
| 2512 | |
| 2513 // Sharing support | |
| 2514 // Construct the path to the archive | |
| 2515 char jvm_path[JVM_MAXPATHLEN]; | |
| 2516 os::jvm_path(jvm_path, sizeof(jvm_path)); | |
| 2517 #ifdef TIERED | |
| 2518 if (strstr(jvm_path, "client") != NULL) { | |
| 2519 force_client_mode = true; | |
| 2520 } | |
| 2521 #endif // TIERED | |
| 2522 char *end = strrchr(jvm_path, *os::file_separator()); | |
| 2523 if (end != NULL) *end = '\0'; | |
| 2524 char *shared_archive_path = NEW_C_HEAP_ARRAY(char, strlen(jvm_path) + | |
| 2525 strlen(os::file_separator()) + 20); | |
| 2526 if (shared_archive_path == NULL) return JNI_ENOMEM; | |
| 2527 strcpy(shared_archive_path, jvm_path); | |
| 2528 strcat(shared_archive_path, os::file_separator()); | |
| 2529 strcat(shared_archive_path, "classes"); | |
| 2530 DEBUG_ONLY(strcat(shared_archive_path, "_g");) | |
| 2531 strcat(shared_archive_path, ".jsa"); | |
| 2532 SharedArchivePath = shared_archive_path; | |
| 2533 | |
| 2534 // Remaining part of option string | |
| 2535 const char* tail; | |
| 2536 | |
| 2537 // If flag "-XX:Flags=flags-file" is used it will be the first option to be processed. | |
| 2538 bool settings_file_specified = false; | |
| 564 | 2539 const char* flags_file; |
| 0 | 2540 int index; |
| 2541 for (index = 0; index < args->nOptions; index++) { | |
| 2542 const JavaVMOption *option = args->options + index; | |
| 2543 if (match_option(option, "-XX:Flags=", &tail)) { | |
| 564 | 2544 flags_file = tail; |
| 0 | 2545 settings_file_specified = true; |
| 2546 } | |
| 2547 if (match_option(option, "-XX:+PrintVMOptions", &tail)) { | |
| 2548 PrintVMOptions = true; | |
| 2549 } | |
|
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2550 if (match_option(option, "-XX:-PrintVMOptions", &tail)) { |
|
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2551 PrintVMOptions = false; |
|
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2552 } |
| 564 | 2553 if (match_option(option, "-XX:+IgnoreUnrecognizedVMOptions", &tail)) { |
| 2554 IgnoreUnrecognizedVMOptions = true; | |
| 2555 } | |
| 2556 if (match_option(option, "-XX:-IgnoreUnrecognizedVMOptions", &tail)) { | |
| 2557 IgnoreUnrecognizedVMOptions = false; | |
| 2558 } | |
| 2559 } | |
| 2560 | |
| 2561 if (IgnoreUnrecognizedVMOptions) { | |
| 2562 // uncast const to modify the flag args->ignoreUnrecognized | |
| 2563 *(jboolean*)(&args->ignoreUnrecognized) = true; | |
| 2564 } | |
| 2565 | |
| 2566 // Parse specified settings file | |
| 2567 if (settings_file_specified) { | |
| 2568 if (!process_settings_file(flags_file, true, args->ignoreUnrecognized)) { | |
| 2569 return JNI_EINVAL; | |
| 2570 } | |
| 0 | 2571 } |
| 2572 | |
| 2573 // Parse default .hotspotrc settings file | |
| 2574 if (!settings_file_specified) { | |
| 2575 if (!process_settings_file(".hotspotrc", false, args->ignoreUnrecognized)) { | |
| 2576 return JNI_EINVAL; | |
| 2577 } | |
| 2578 } | |
| 2579 | |
| 2580 if (PrintVMOptions) { | |
| 2581 for (index = 0; index < args->nOptions; index++) { | |
| 2582 const JavaVMOption *option = args->options + index; | |
| 2583 if (match_option(option, "-XX:", &tail)) { | |
| 2584 logOption(tail); | |
| 2585 } | |
| 2586 } | |
| 2587 } | |
| 2588 | |
| 2589 // Parse JavaVMInitArgs structure passed in, as well as JAVA_TOOL_OPTIONS and _JAVA_OPTIONS | |
| 2590 jint result = parse_vm_init_args(args); | |
| 2591 if (result != JNI_OK) { | |
| 2592 return result; | |
| 2593 } | |
| 2594 | |
|
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2595 // These are hacks until G1 is fully supported and tested |
|
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2596 // but lets you force -XX:+UseG1GC in PRT and get it where it (mostly) works |
|
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2597 if (UseG1GC) { |
|
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2598 if (UseConcMarkSweepGC || UseParNewGC || UseParallelGC || UseParallelOldGC || UseSerialGC) { |
|
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2599 #ifndef PRODUCT |
|
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|
2600 tty->print_cr("-XX:+UseG1GC is incompatible with other collectors, using UseG1GC"); |
|
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2601 #endif // PRODUCT |
|
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|
2602 UseConcMarkSweepGC = false; |
|
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|
2603 UseParNewGC = false; |
|
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|
2604 UseParallelGC = false; |
|
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|
2605 UseParallelOldGC = false; |
|
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|
2606 UseSerialGC = false; |
|
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|
2607 } |
|
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|
2608 no_shared_spaces(); |
|
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|
2609 } |
|
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|
2610 |
| 0 | 2611 #ifndef PRODUCT |
| 2612 if (TraceBytecodesAt != 0) { | |
| 2613 TraceBytecodes = true; | |
| 2614 } | |
| 2615 if (CountCompiledCalls) { | |
| 2616 if (UseCounterDecay) { | |
| 2617 warning("UseCounterDecay disabled because CountCalls is set"); | |
| 2618 UseCounterDecay = false; | |
| 2619 } | |
| 2620 } | |
| 2621 #endif // PRODUCT | |
| 2622 | |
| 2623 if (PrintGCDetails) { | |
| 2624 // Turn on -verbose:gc options as well | |
| 2625 PrintGC = true; | |
| 2626 if (FLAG_IS_DEFAULT(TraceClassUnloading)) { | |
| 2627 TraceClassUnloading = true; | |
| 2628 } | |
| 2629 } | |
| 2630 | |
| 2631 #ifdef SERIALGC | |
| 2632 set_serial_gc_flags(); | |
| 2633 #endif // SERIALGC | |
| 2634 #ifdef KERNEL | |
| 2635 no_shared_spaces(); | |
| 2636 #endif // KERNEL | |
| 2637 | |
| 2638 // Set flags based on ergonomics. | |
| 2639 set_ergonomics_flags(); | |
| 2640 | |
|
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|
2641 // Check the GC selections again. |
|
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|
2642 if (!check_gc_consistency()) { |
|
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|
2643 return JNI_EINVAL; |
|
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|
2644 } |
|
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|
2645 |
|
13
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|
2646 if (UseParallelGC || UseParallelOldGC) { |
|
10
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2647 // Set some flags for ParallelGC if needed. |
|
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|
2648 set_parallel_gc_flags(); |
|
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|
2649 } else if (UseConcMarkSweepGC) { |
|
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|
2650 // Set some flags for CMS |
|
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|
2651 set_cms_and_parnew_gc_flags(); |
|
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|
2652 } else if (UseParNewGC) { |
|
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|
2653 // Set some flags for ParNew |
|
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|
2654 set_parnew_gc_flags(); |
|
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|
2655 } |
|
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2656 // Temporary; make the "if" an "else-if" before |
|
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|
2657 // we integrate G1. XXX |
|
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|
2658 if (UseG1GC) { |
|
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|
2659 // Set some flags for garbage-first, if needed. |
|
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|
2660 set_g1_gc_flags(); |
|
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|
2661 } |
|
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|
2662 |
| 0 | 2663 #ifdef SERIALGC |
| 2664 assert(verify_serial_gc_flags(), "SerialGC unset"); | |
| 2665 #endif // SERIALGC | |
| 2666 | |
| 2667 // Set bytecode rewriting flags | |
| 2668 set_bytecode_flags(); | |
| 2669 | |
| 2670 // Set flags if Aggressive optimization flags (-XX:+AggressiveOpts) enabled. | |
| 2671 set_aggressive_opts_flags(); | |
| 2672 | |
| 2673 #ifdef CC_INTERP | |
| 2674 // Biased locking is not implemented with c++ interpreter | |
| 2675 FLAG_SET_DEFAULT(UseBiasedLocking, false); | |
| 2676 #endif /* CC_INTERP */ | |
| 2677 | |
|
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2678 #ifdef COMPILER2 |
|
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|
2679 if (!UseBiasedLocking || EmitSync != 0) { |
|
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|
2680 UseOptoBiasInlining = false; |
|
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|
2681 } |
|
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|
2682 #endif |
|
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2683 |
| 0 | 2684 if (PrintCommandLineFlags) { |
| 2685 CommandLineFlags::printSetFlags(); | |
| 2686 } | |
| 2687 | |
|
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2688 #ifdef ASSERT |
|
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|
2689 if (PrintFlagsFinal) { |
|
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|
2690 CommandLineFlags::printFlags(); |
|
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|
2691 } |
|
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|
2692 #endif |
|
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2693 |
| 0 | 2694 return JNI_OK; |
| 2695 } | |
| 2696 | |
| 2697 int Arguments::PropertyList_count(SystemProperty* pl) { | |
| 2698 int count = 0; | |
| 2699 while(pl != NULL) { | |
| 2700 count++; | |
| 2701 pl = pl->next(); | |
| 2702 } | |
| 2703 return count; | |
| 2704 } | |
| 2705 | |
| 2706 const char* Arguments::PropertyList_get_value(SystemProperty *pl, const char* key) { | |
| 2707 assert(key != NULL, "just checking"); | |
| 2708 SystemProperty* prop; | |
| 2709 for (prop = pl; prop != NULL; prop = prop->next()) { | |
| 2710 if (strcmp(key, prop->key()) == 0) return prop->value(); | |
| 2711 } | |
| 2712 return NULL; | |
| 2713 } | |
| 2714 | |
| 2715 const char* Arguments::PropertyList_get_key_at(SystemProperty *pl, int index) { | |
| 2716 int count = 0; | |
| 2717 const char* ret_val = NULL; | |
| 2718 | |
| 2719 while(pl != NULL) { | |
| 2720 if(count >= index) { | |
| 2721 ret_val = pl->key(); | |
| 2722 break; | |
| 2723 } | |
| 2724 count++; | |
| 2725 pl = pl->next(); | |
| 2726 } | |
| 2727 | |
| 2728 return ret_val; | |
| 2729 } | |
| 2730 | |
| 2731 char* Arguments::PropertyList_get_value_at(SystemProperty* pl, int index) { | |
| 2732 int count = 0; | |
| 2733 char* ret_val = NULL; | |
| 2734 | |
| 2735 while(pl != NULL) { | |
| 2736 if(count >= index) { | |
| 2737 ret_val = pl->value(); | |
| 2738 break; | |
| 2739 } | |
| 2740 count++; | |
| 2741 pl = pl->next(); | |
| 2742 } | |
| 2743 | |
| 2744 return ret_val; | |
| 2745 } | |
| 2746 | |
| 2747 void Arguments::PropertyList_add(SystemProperty** plist, SystemProperty *new_p) { | |
| 2748 SystemProperty* p = *plist; | |
| 2749 if (p == NULL) { | |
| 2750 *plist = new_p; | |
| 2751 } else { | |
| 2752 while (p->next() != NULL) { | |
| 2753 p = p->next(); | |
| 2754 } | |
| 2755 p->set_next(new_p); | |
| 2756 } | |
| 2757 } | |
| 2758 | |
| 2759 void Arguments::PropertyList_add(SystemProperty** plist, const char* k, char* v) { | |
| 2760 if (plist == NULL) | |
| 2761 return; | |
| 2762 | |
| 2763 SystemProperty* new_p = new SystemProperty(k, v, true); | |
| 2764 PropertyList_add(plist, new_p); | |
| 2765 } | |
| 2766 | |
| 2767 // This add maintains unique property key in the list. | |
| 2768 void Arguments::PropertyList_unique_add(SystemProperty** plist, const char* k, char* v) { | |
| 2769 if (plist == NULL) | |
| 2770 return; | |
| 2771 | |
| 2772 // If property key exist then update with new value. | |
| 2773 SystemProperty* prop; | |
| 2774 for (prop = *plist; prop != NULL; prop = prop->next()) { | |
| 2775 if (strcmp(k, prop->key()) == 0) { | |
| 2776 prop->set_value(v); | |
| 2777 return; | |
| 2778 } | |
| 2779 } | |
| 2780 | |
| 2781 PropertyList_add(plist, k, v); | |
| 2782 } | |
| 2783 | |
| 2784 #ifdef KERNEL | |
| 2785 char *Arguments::get_kernel_properties() { | |
| 2786 // Find properties starting with kernel and append them to string | |
| 2787 // We need to find out how long they are first because the URL's that they | |
| 2788 // might point to could get long. | |
| 2789 int length = 0; | |
| 2790 SystemProperty* prop; | |
| 2791 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
| 2792 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
| 2793 length += (strlen(prop->key()) + strlen(prop->value()) + 5); // "-D =" | |
| 2794 } | |
| 2795 } | |
| 2796 // Add one for null terminator. | |
| 2797 char *props = AllocateHeap(length + 1, "get_kernel_properties"); | |
| 2798 if (length != 0) { | |
| 2799 int pos = 0; | |
| 2800 for (prop = _system_properties; prop != NULL; prop = prop->next()) { | |
| 2801 if (strncmp(prop->key(), "kernel.", 7 ) == 0) { | |
| 2802 jio_snprintf(&props[pos], length-pos, | |
| 2803 "-D%s=%s ", prop->key(), prop->value()); | |
| 2804 pos = strlen(props); | |
| 2805 } | |
| 2806 } | |
| 2807 } | |
| 2808 // null terminate props in case of null | |
| 2809 props[length] = '\0'; | |
| 2810 return props; | |
| 2811 } | |
| 2812 #endif // KERNEL | |
| 2813 | |
| 2814 // Copies src into buf, replacing "%%" with "%" and "%p" with pid | |
| 2815 // Returns true if all of the source pointed by src has been copied over to | |
| 2816 // the destination buffer pointed by buf. Otherwise, returns false. | |
| 2817 // Notes: | |
| 2818 // 1. If the length (buflen) of the destination buffer excluding the | |
| 2819 // NULL terminator character is not long enough for holding the expanded | |
| 2820 // pid characters, it also returns false instead of returning the partially | |
| 2821 // expanded one. | |
| 2822 // 2. The passed in "buflen" should be large enough to hold the null terminator. | |
| 2823 bool Arguments::copy_expand_pid(const char* src, size_t srclen, | |
| 2824 char* buf, size_t buflen) { | |
| 2825 const char* p = src; | |
| 2826 char* b = buf; | |
| 2827 const char* src_end = &src[srclen]; | |
| 2828 char* buf_end = &buf[buflen - 1]; | |
| 2829 | |
| 2830 while (p < src_end && b < buf_end) { | |
| 2831 if (*p == '%') { | |
| 2832 switch (*(++p)) { | |
| 2833 case '%': // "%%" ==> "%" | |
| 2834 *b++ = *p++; | |
| 2835 break; | |
| 2836 case 'p': { // "%p" ==> current process id | |
| 2837 // buf_end points to the character before the last character so | |
| 2838 // that we could write '\0' to the end of the buffer. | |
| 2839 size_t buf_sz = buf_end - b + 1; | |
| 2840 int ret = jio_snprintf(b, buf_sz, "%d", os::current_process_id()); | |
| 2841 | |
| 2842 // if jio_snprintf fails or the buffer is not long enough to hold | |
| 2843 // the expanded pid, returns false. | |
| 2844 if (ret < 0 || ret >= (int)buf_sz) { | |
| 2845 return false; | |
| 2846 } else { | |
| 2847 b += ret; | |
| 2848 assert(*b == '\0', "fail in copy_expand_pid"); | |
| 2849 if (p == src_end && b == buf_end + 1) { | |
| 2850 // reach the end of the buffer. | |
| 2851 return true; | |
| 2852 } | |
| 2853 } | |
| 2854 p++; | |
| 2855 break; | |
| 2856 } | |
| 2857 default : | |
| 2858 *b++ = '%'; | |
| 2859 } | |
| 2860 } else { | |
| 2861 *b++ = *p++; | |
| 2862 } | |
| 2863 } | |
| 2864 *b = '\0'; | |
| 2865 return (p == src_end); // return false if not all of the source was copied | |
| 2866 } |