1 /* 2 * Copyright (c) 1997, 2022, Oracle and/or its affiliates. All rights reserved. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_RUNTIME_ARGUMENTS_HPP 26 #define SHARE_RUNTIME_ARGUMENTS_HPP 27 28 #include "logging/logLevel.hpp" 29 #include "logging/logTag.hpp" 30 #include "memory/allStatic.hpp" 31 #include "memory/allocation.hpp" 32 #include "runtime/globals.hpp" 33 #include "runtime/java.hpp" 34 #include "runtime/os.hpp" 35 #include "utilities/debug.hpp" 36 #include "utilities/vmEnums.hpp" 37 38 // Arguments parses the command line and recognizes options 39 40 class JVMFlag; 41 42 // Invocation API hook typedefs (these should really be defined in jni.h) 43 extern "C" { 44 typedef void (JNICALL *abort_hook_t)(void); 45 typedef void (JNICALL *exit_hook_t)(jint code); 46 typedef jint (JNICALL *vfprintf_hook_t)(FILE *fp, const char *format, va_list args) ATTRIBUTE_PRINTF(2, 0); 47 } 48 49 // Obsolete or deprecated -XX flag. 50 struct SpecialFlag { 51 const char* name; 52 JDK_Version deprecated_in; // When the deprecation warning started (or "undefined"). 53 JDK_Version obsolete_in; // When the obsolete warning started (or "undefined"). 54 JDK_Version expired_in; // When the option expires (or "undefined"). 55 }; 56 57 struct LegacyGCLogging { 58 const char* file; // NULL -> stdout 59 int lastFlag; // 0 not set; 1 -> -verbose:gc; 2 -> -Xloggc 60 }; 61 62 // PathString is used as: 63 // - the underlying value for a SystemProperty 64 // - the path portion of an --patch-module module/path pair 65 // - the string that represents the boot class path, Arguments::_boot_class_path. 66 class PathString : public CHeapObj<mtArguments> { 67 protected: 68 char* _value; 69 public: 70 char* value() const { return _value; } 71 72 // return false iff OOM && alloc_failmode == AllocFailStrategy::RETURN_NULL 73 bool set_value(const char *value, AllocFailType alloc_failmode = AllocFailStrategy::EXIT_OOM); 74 void append_value(const char *value); 75 76 PathString(const char* value); 77 ~PathString(); 78 }; 79 80 // ModulePatchPath records the module/path pair as specified to --patch-module. 81 class ModulePatchPath : public CHeapObj<mtInternal> { 82 private: 83 char* _module_name; 84 PathString* _path; 85 public: 86 ModulePatchPath(const char* module_name, const char* path); 87 ~ModulePatchPath(); 88 89 inline const char* module_name() const { return _module_name; } 90 inline char* path_string() const { return _path->value(); } 91 inline void append_path(const char* path) { _path->append_value(path); } 92 }; 93 94 // Element describing System and User (-Dkey=value flags) defined property. 95 // 96 // An internal SystemProperty is one that has been removed in 97 // jdk.internal.VM.saveAndRemoveProperties, like jdk.boot.class.path.append. 98 // 99 class SystemProperty : public PathString { 100 private: 101 char* _key; 102 SystemProperty* _next; 103 bool _internal; 104 bool _writeable; 105 106 public: 107 // Accessors 108 char* value() const { return PathString::value(); } 109 const char* key() const { return _key; } 110 bool internal() const { return _internal; } 111 SystemProperty* next() const { return _next; } 112 void set_next(SystemProperty* next) { _next = next; } 113 bool writeable() const { return _writeable; } 114 115 bool readable() const { 116 return !_internal || (strcmp(_key, "jdk.boot.class.path.append") == 0 && 117 value() != NULL); 118 } 119 120 // A system property should only have its value set 121 // via an external interface if it is a writeable property. 122 // The internal, non-writeable property jdk.boot.class.path.append 123 // is the only exception to this rule. It can be set externally 124 // via -Xbootclasspath/a or JVMTI OnLoad phase call to AddToBootstrapClassLoaderSearch. 125 // In those cases for jdk.boot.class.path.append, the base class 126 // set_value and append_value methods are called directly. 127 void set_writeable_value(const char *value) { 128 if (writeable()) { 129 set_value(value); 130 } 131 } 132 void append_writeable_value(const char *value) { 133 if (writeable()) { 134 append_value(value); 135 } 136 } 137 138 // Constructor 139 SystemProperty(const char* key, const char* value, bool writeable, bool internal = false); 140 }; 141 142 143 // For use by -agentlib, -agentpath and -Xrun 144 class AgentLibrary : public CHeapObj<mtArguments> { 145 friend class AgentLibraryList; 146 public: 147 // Is this library valid or not. Don't rely on os_lib == NULL as statically 148 // linked lib could have handle of RTLD_DEFAULT which == 0 on some platforms 149 enum AgentState { 150 agent_invalid = 0, 151 agent_valid = 1 152 }; 153 154 private: 155 char* _name; 156 char* _options; 157 void* _os_lib; 158 bool _is_absolute_path; 159 bool _is_static_lib; 160 bool _is_instrument_lib; 161 AgentState _state; 162 AgentLibrary* _next; 163 164 public: 165 // Accessors 166 const char* name() const { return _name; } 167 char* options() const { return _options; } 168 bool is_absolute_path() const { return _is_absolute_path; } 169 void* os_lib() const { return _os_lib; } 170 void set_os_lib(void* os_lib) { _os_lib = os_lib; } 171 AgentLibrary* next() const { return _next; } 172 bool is_static_lib() const { return _is_static_lib; } 173 bool is_instrument_lib() const { return _is_instrument_lib; } 174 void set_static_lib(bool is_static_lib) { _is_static_lib = is_static_lib; } 175 bool valid() { return (_state == agent_valid); } 176 void set_valid() { _state = agent_valid; } 177 178 // Constructor 179 AgentLibrary(const char* name, const char* options, bool is_absolute_path, 180 void* os_lib, bool instrument_lib=false); 181 }; 182 183 // maintain an order of entry list of AgentLibrary 184 class AgentLibraryList { 185 private: 186 AgentLibrary* _first; 187 AgentLibrary* _last; 188 public: 189 bool is_empty() const { return _first == NULL; } 190 AgentLibrary* first() const { return _first; } 191 192 // add to the end of the list 193 void add(AgentLibrary* lib) { 194 if (is_empty()) { 195 _first = _last = lib; 196 } else { 197 _last->_next = lib; 198 _last = lib; 199 } 200 lib->_next = NULL; 201 } 202 203 // search for and remove a library known to be in the list 204 void remove(AgentLibrary* lib) { 205 AgentLibrary* curr; 206 AgentLibrary* prev = NULL; 207 for (curr = first(); curr != NULL; prev = curr, curr = curr->next()) { 208 if (curr == lib) { 209 break; 210 } 211 } 212 assert(curr != NULL, "always should be found"); 213 214 if (curr != NULL) { 215 // it was found, by-pass this library 216 if (prev == NULL) { 217 _first = curr->_next; 218 } else { 219 prev->_next = curr->_next; 220 } 221 if (curr == _last) { 222 _last = prev; 223 } 224 curr->_next = NULL; 225 } 226 } 227 228 AgentLibraryList() { 229 _first = NULL; 230 _last = NULL; 231 } 232 }; 233 234 // Helper class for controlling the lifetime of JavaVMInitArgs objects. 235 class ScopedVMInitArgs; 236 237 class Arguments : AllStatic { 238 friend class VMStructs; 239 friend class JvmtiExport; 240 friend class CodeCacheExtensions; 241 friend class ArgumentsTest; 242 friend class LargeOptionsTest; 243 public: 244 // Operation modi 245 enum Mode { 246 _int, // corresponds to -Xint 247 _mixed, // corresponds to -Xmixed 248 _comp // corresponds to -Xcomp 249 }; 250 251 enum ArgsRange { 252 arg_unreadable = -3, 253 arg_too_small = -2, 254 arg_too_big = -1, 255 arg_in_range = 0 256 }; 257 258 enum PropertyAppendable { 259 AppendProperty, 260 AddProperty 261 }; 262 263 enum PropertyWriteable { 264 WriteableProperty, 265 UnwriteableProperty 266 }; 267 268 enum PropertyInternal { 269 InternalProperty, 270 ExternalProperty 271 }; 272 273 private: 274 275 // a pointer to the flags file name if it is specified 276 static char* _jvm_flags_file; 277 // an array containing all flags specified in the .hotspotrc file 278 static char** _jvm_flags_array; 279 static int _num_jvm_flags; 280 // an array containing all jvm arguments specified in the command line 281 static char** _jvm_args_array; 282 static int _num_jvm_args; 283 // string containing all java command (class/jarfile name and app args) 284 static char* _java_command; 285 286 // Property list 287 static SystemProperty* _system_properties; 288 289 // Quick accessor to System properties in the list: 290 static SystemProperty *_sun_boot_library_path; 291 static SystemProperty *_java_library_path; 292 static SystemProperty *_java_home; 293 static SystemProperty *_java_class_path; 294 static SystemProperty *_jdk_boot_class_path_append; 295 static SystemProperty *_vm_info; 296 297 // --patch-module=module=<file>(<pathsep><file>)* 298 // Each element contains the associated module name, path 299 // string pair as specified to --patch-module. 300 static GrowableArray<ModulePatchPath*>* _patch_mod_prefix; 301 302 // The constructed value of the system class path after 303 // argument processing and JVMTI OnLoad additions via 304 // calls to AddToBootstrapClassLoaderSearch. This is the 305 // final form before ClassLoader::setup_bootstrap_search(). 306 // Note: since --patch-module is a module name/path pair, the 307 // boot class path string no longer contains the "prefix" 308 // to the boot class path base piece as it did when 309 // -Xbootclasspath/p was supported. 310 static PathString* _boot_class_path; 311 312 // Set if a modular java runtime image is present vs. a build with exploded modules 313 static bool _has_jimage; 314 315 // temporary: to emit warning if the default ext dirs are not empty. 316 // remove this variable when the warning is no longer needed. 317 static char* _ext_dirs; 318 319 // java.vendor.url.bug, bug reporting URL for fatal errors. 320 static const char* _java_vendor_url_bug; 321 322 // sun.java.launcher, private property to provide information about 323 // java launcher 324 static const char* _sun_java_launcher; 325 326 // was this VM created via the -XXaltjvm=<path> option 327 static bool _sun_java_launcher_is_altjvm; 328 329 // for legacy gc options (-verbose:gc and -Xloggc:) 330 static LegacyGCLogging _legacyGCLogging; 331 332 // Value of the conservative maximum heap alignment needed 333 static size_t _conservative_max_heap_alignment; 334 335 // -Xrun arguments 336 static AgentLibraryList _libraryList; 337 static void add_init_library(const char* name, char* options); 338 339 // -agentlib and -agentpath arguments 340 static AgentLibraryList _agentList; 341 static void add_init_agent(const char* name, char* options, bool absolute_path); 342 static void add_instrument_agent(const char* name, char* options, bool absolute_path); 343 344 // Late-binding agents not started via arguments 345 static void add_loaded_agent(AgentLibrary *agentLib); 346 347 // Operation modi 348 static Mode _mode; 349 static void set_mode_flags(Mode mode); 350 static bool _java_compiler; 351 static void set_java_compiler(bool arg) { _java_compiler = arg; } 352 static bool java_compiler() { return _java_compiler; } 353 354 // -Xdebug flag 355 static bool _xdebug_mode; 356 static void set_xdebug_mode(bool arg) { _xdebug_mode = arg; } 357 static bool xdebug_mode() { return _xdebug_mode; } 358 359 // preview features 360 static bool _enable_preview; 361 362 // Used to save default settings 363 static bool _AlwaysCompileLoopMethods; 364 static bool _UseOnStackReplacement; 365 static bool _BackgroundCompilation; 366 static bool _ClipInlining; 367 368 // GC ergonomics 369 static void set_conservative_max_heap_alignment(); 370 static void set_use_compressed_oops(); 371 static void set_use_compressed_klass_ptrs(); 372 static jint set_ergonomics_flags(); 373 static void set_shared_spaces_flags_and_archive_paths(); 374 // Limits the given heap size by the maximum amount of virtual 375 // memory this process is currently allowed to use. It also takes 376 // the virtual-to-physical ratio of the current GC into account. 377 static size_t limit_heap_by_allocatable_memory(size_t size); 378 // Setup heap size 379 static void set_heap_size(); 380 381 // Bytecode rewriting 382 static void set_bytecode_flags(); 383 384 // Invocation API hooks 385 static abort_hook_t _abort_hook; 386 static exit_hook_t _exit_hook; 387 static vfprintf_hook_t _vfprintf_hook; 388 389 // System properties 390 static bool add_property(const char* prop, PropertyWriteable writeable=WriteableProperty, 391 PropertyInternal internal=ExternalProperty); 392 393 // Used for module system related properties: converted from command-line flags. 394 // Basic properties are writeable as they operate as "last one wins" and will get overwritten. 395 // Numbered properties are never writeable, and always internal. 396 static bool create_module_property(const char* prop_name, const char* prop_value, PropertyInternal internal); 397 static bool create_numbered_module_property(const char* prop_base_name, const char* prop_value, unsigned int count); 398 399 static int process_patch_mod_option(const char* patch_mod_tail); 400 401 // Aggressive optimization flags. 402 static jint set_aggressive_opts_flags(); 403 404 static jint set_aggressive_heap_flags(); 405 406 // Argument parsing 407 static bool parse_argument(const char* arg, JVMFlagOrigin origin); 408 static bool process_argument(const char* arg, jboolean ignore_unrecognized, JVMFlagOrigin origin); 409 static void process_java_launcher_argument(const char*, void*); 410 static void process_java_compiler_argument(const char* arg); 411 static jint parse_options_environment_variable(const char* name, ScopedVMInitArgs* vm_args); 412 static jint parse_java_tool_options_environment_variable(ScopedVMInitArgs* vm_args); 413 static jint parse_java_options_environment_variable(ScopedVMInitArgs* vm_args); 414 static jint parse_vm_options_file(const char* file_name, ScopedVMInitArgs* vm_args); 415 static jint parse_options_buffer(const char* name, char* buffer, const size_t buf_len, ScopedVMInitArgs* vm_args); 416 static jint parse_xss(const JavaVMOption* option, const char* tail, intx* out_ThreadStackSize); 417 static jint insert_vm_options_file(const JavaVMInitArgs* args, 418 const char* vm_options_file, 419 const int vm_options_file_pos, 420 ScopedVMInitArgs* vm_options_file_args, 421 ScopedVMInitArgs* args_out); 422 static bool args_contains_vm_options_file_arg(const JavaVMInitArgs* args); 423 static jint expand_vm_options_as_needed(const JavaVMInitArgs* args_in, 424 ScopedVMInitArgs* mod_args, 425 JavaVMInitArgs** args_out); 426 static jint match_special_option_and_act(const JavaVMInitArgs* args, 427 ScopedVMInitArgs* args_out); 428 429 static bool handle_deprecated_print_gc_flags(); 430 431 static jint parse_vm_init_args(const JavaVMInitArgs *vm_options_args, 432 const JavaVMInitArgs *java_tool_options_args, 433 const JavaVMInitArgs *java_options_args, 434 const JavaVMInitArgs *cmd_line_args); 435 static jint parse_each_vm_init_arg(const JavaVMInitArgs* args, JVMFlagOrigin origin); 436 static jint finalize_vm_init_args(); 437 static bool is_bad_option(const JavaVMOption* option, jboolean ignore, const char* option_type); 438 439 static bool is_bad_option(const JavaVMOption* option, jboolean ignore) { 440 return is_bad_option(option, ignore, NULL); 441 } 442 443 static void describe_range_error(ArgsRange errcode); 444 static ArgsRange check_memory_size(julong size, julong min_size, julong max_size); 445 static ArgsRange parse_memory_size(const char* s, julong* long_arg, 446 julong min_size, julong max_size = max_uintx); 447 448 // methods to build strings from individual args 449 static void build_jvm_args(const char* arg); 450 static void build_jvm_flags(const char* arg); 451 static void add_string(char*** bldarray, int* count, const char* arg); 452 static const char* build_resource_string(char** args, int count); 453 454 // Returns true if the flag is obsolete (and not yet expired). 455 // In this case the 'version' buffer is filled in with 456 // the version number when the flag became obsolete. 457 static bool is_obsolete_flag(const char* flag_name, JDK_Version* version); 458 459 // Returns 1 if the flag is deprecated (and not yet obsolete or expired). 460 // In this case the 'version' buffer is filled in with the version number when 461 // the flag became deprecated. 462 // Returns -1 if the flag is expired or obsolete. 463 // Returns 0 otherwise. 464 static int is_deprecated_flag(const char* flag_name, JDK_Version* version); 465 466 // Return the real name for the flag passed on the command line (either an alias name or "flag_name"). 467 static const char* real_flag_name(const char *flag_name); 468 static JVMFlag* find_jvm_flag(const char* name, size_t name_length); 469 470 // Return the "real" name for option arg if arg is an alias, and print a warning if arg is deprecated. 471 // Return NULL if the arg has expired. 472 static const char* handle_aliases_and_deprecation(const char* arg); 473 474 static char* SharedArchivePath; 475 static char* SharedDynamicArchivePath; 476 static size_t _default_SharedBaseAddress; // The default value specified in globals.hpp 477 static void extract_shared_archive_paths(const char* archive_path, 478 char** base_archive_path, 479 char** top_archive_path) NOT_CDS_RETURN; 480 481 // Helpers for parse_malloc_limits 482 static bool parse_malloc_limit_size(const char* s, size_t* out); 483 static void parse_single_category_limit(char* expression, size_t limits[mt_number_of_types]); 484 485 public: 486 static int num_archives(const char* archive_path) NOT_CDS_RETURN_(0); 487 // Parses the arguments, first phase 488 static jint parse(const JavaVMInitArgs* args); 489 // Parse a string for a unsigned integer. Returns true if value 490 // is an unsigned integer greater than or equal to the minimum 491 // parameter passed and returns the value in uintx_arg. Returns 492 // false otherwise, with uintx_arg undefined. 493 static bool parse_uintx(const char* value, uintx* uintx_arg, 494 uintx min_size); 495 // Apply ergonomics 496 static jint apply_ergo(); 497 // Adjusts the arguments after the OS have adjusted the arguments 498 static jint adjust_after_os(); 499 500 // Check consistency or otherwise of VM argument settings 501 static bool check_vm_args_consistency(); 502 // Used by os_solaris 503 static bool process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized); 504 505 static size_t conservative_max_heap_alignment() { return _conservative_max_heap_alignment; } 506 // Return the maximum size a heap with compressed oops can take 507 static size_t max_heap_for_compressed_oops(); 508 509 // return a char* array containing all options 510 static char** jvm_flags_array() { return _jvm_flags_array; } 511 static char** jvm_args_array() { return _jvm_args_array; } 512 static int num_jvm_flags() { return _num_jvm_flags; } 513 static int num_jvm_args() { return _num_jvm_args; } 514 // return the arguments passed to the Java application 515 static const char* java_command() { return _java_command; } 516 517 // print jvm_flags, jvm_args and java_command 518 static void print_on(outputStream* st); 519 static void print_summary_on(outputStream* st); 520 521 // convenient methods to get and set jvm_flags_file 522 static const char* get_jvm_flags_file() { return _jvm_flags_file; } 523 static void set_jvm_flags_file(const char *value) { 524 if (_jvm_flags_file != NULL) { 525 os::free(_jvm_flags_file); 526 } 527 _jvm_flags_file = os::strdup_check_oom(value); 528 } 529 // convenient methods to obtain / print jvm_flags and jvm_args 530 static const char* jvm_flags() { return build_resource_string(_jvm_flags_array, _num_jvm_flags); } 531 static const char* jvm_args() { return build_resource_string(_jvm_args_array, _num_jvm_args); } 532 static void print_jvm_flags_on(outputStream* st); 533 static void print_jvm_args_on(outputStream* st); 534 535 // -Dkey=value flags 536 static SystemProperty* system_properties() { return _system_properties; } 537 static const char* get_property(const char* key); 538 539 // -Djava.vendor.url.bug 540 static const char* java_vendor_url_bug() { return _java_vendor_url_bug; } 541 542 // -Dsun.java.launcher 543 static const char* sun_java_launcher() { return _sun_java_launcher; } 544 // Was VM created by a Java launcher? 545 static bool created_by_java_launcher(); 546 // -Dsun.java.launcher.is_altjvm 547 static bool sun_java_launcher_is_altjvm(); 548 549 // -Xrun 550 static AgentLibrary* libraries() { return _libraryList.first(); } 551 static bool init_libraries_at_startup() { return !_libraryList.is_empty(); } 552 static void convert_library_to_agent(AgentLibrary* lib) 553 { _libraryList.remove(lib); 554 _agentList.add(lib); } 555 556 // -agentlib -agentpath 557 static AgentLibrary* agents() { return _agentList.first(); } 558 static bool init_agents_at_startup() { return !_agentList.is_empty(); } 559 560 // abort, exit, vfprintf hooks 561 static abort_hook_t abort_hook() { return _abort_hook; } 562 static exit_hook_t exit_hook() { return _exit_hook; } 563 static vfprintf_hook_t vfprintf_hook() { return _vfprintf_hook; } 564 565 static const char* GetSharedArchivePath() { return SharedArchivePath; } 566 static const char* GetSharedDynamicArchivePath() { return SharedDynamicArchivePath; } 567 static size_t default_SharedBaseAddress() { return _default_SharedBaseAddress; } 568 // Java launcher properties 569 static void process_sun_java_launcher_properties(JavaVMInitArgs* args); 570 571 // System properties 572 static void init_system_properties(); 573 574 // Update/Initialize System properties after JDK version number is known 575 static void init_version_specific_system_properties(); 576 577 // Update VM info property - called after argument parsing 578 static void update_vm_info_property(const char* vm_info) { 579 _vm_info->set_value(vm_info); 580 } 581 582 // Property List manipulation 583 static void PropertyList_add(SystemProperty *element); 584 static void PropertyList_add(SystemProperty** plist, SystemProperty *element); 585 static void PropertyList_add(SystemProperty** plist, const char* k, const char* v, bool writeable, bool internal); 586 587 static void PropertyList_unique_add(SystemProperty** plist, const char* k, const char* v, 588 PropertyAppendable append, PropertyWriteable writeable, 589 PropertyInternal internal); 590 static const char* PropertyList_get_value(SystemProperty* plist, const char* key); 591 static const char* PropertyList_get_readable_value(SystemProperty* plist, const char* key); 592 static int PropertyList_count(SystemProperty* pl); 593 static int PropertyList_readable_count(SystemProperty* pl); 594 595 static bool is_internal_module_property(const char* option); 596 597 // Miscellaneous System property value getter and setters. 598 static void set_dll_dir(const char *value) { _sun_boot_library_path->set_value(value); } 599 static void set_java_home(const char *value) { _java_home->set_value(value); } 600 static void set_library_path(const char *value) { _java_library_path->set_value(value); } 601 static void set_ext_dirs(char *value) { _ext_dirs = os::strdup_check_oom(value); } 602 603 // Set up the underlying pieces of the boot class path 604 static void add_patch_mod_prefix(const char *module_name, const char *path, bool allow_append); 605 static bool patch_mod_javabase(); 606 static int finalize_patch_module(); 607 static void set_boot_class_path(const char *value, bool has_jimage) { 608 // During start up, set by os::set_boot_path() 609 assert(get_boot_class_path() == NULL, "Boot class path previously set"); 610 _boot_class_path->set_value(value); 611 _has_jimage = has_jimage; 612 } 613 static void append_sysclasspath(const char *value) { 614 _boot_class_path->append_value(value); 615 _jdk_boot_class_path_append->append_value(value); 616 } 617 618 static GrowableArray<ModulePatchPath*>* get_patch_mod_prefix() { return _patch_mod_prefix; } 619 static char* get_boot_class_path() { return _boot_class_path->value(); } 620 static bool has_jimage() { return _has_jimage; } 621 622 static char* get_java_home() { return _java_home->value(); } 623 static char* get_dll_dir() { return _sun_boot_library_path->value(); } 624 static char* get_appclasspath() { return _java_class_path->value(); } 625 static void fix_appclasspath(); 626 627 static char* get_default_shared_archive_path() NOT_CDS_RETURN_(NULL); 628 static void init_shared_archive_paths() NOT_CDS_RETURN; 629 630 // Operation modi 631 static Mode mode() { return _mode; } 632 static bool is_interpreter_only() { return mode() == _int; } 633 static bool is_compiler_only() { return mode() == _comp; } 634 635 636 // preview features 637 static void set_enable_preview() { _enable_preview = true; } 638 static bool enable_preview() { return _enable_preview; } 639 640 // Utility: copies src into buf, replacing "%%" with "%" and "%p" with pid. 641 static bool copy_expand_pid(const char* src, size_t srclen, char* buf, size_t buflen); 642 643 static void check_unsupported_dumping_properties() NOT_CDS_RETURN; 644 645 static bool check_unsupported_cds_runtime_properties() NOT_CDS_RETURN0; 646 647 static bool atojulong(const char *s, julong* result); 648 649 static bool has_jfr_option() NOT_JFR_RETURN_(false); 650 651 static bool is_dumping_archive() { return DumpSharedSpaces || DynamicDumpSharedSpaces; } 652 653 static void assert_is_dumping_archive() { 654 assert(Arguments::is_dumping_archive(), "dump time only"); 655 } 656 657 // Parse diagnostic NMT switch "MallocLimit" and return the found limits. 658 // 1) If option is not given, it will set all limits to 0 (aka "no limit"). 659 // 2) If option is given in the global form (-XX:MallocLimit=<size>), it 660 // will return the size in *total_limit. 661 // 3) If option is given in its per-NMT-category form (-XX:MallocLimit=<category>:<size>[,<category>:<size>]), 662 // it will return all found limits in the limits array. 663 // 4) If option is malformed, it will exit the VM. 664 // For (2) and (3), limits not affected by the switch will be set to 0. 665 static void parse_malloc_limits(size_t* total_limit, size_t limits[mt_number_of_types]); 666 667 DEBUG_ONLY(static bool verify_special_jvm_flags(bool check_globals);) 668 }; 669 670 // Disable options not supported in this release, with a warning if they 671 // were explicitly requested on the command-line 672 #define UNSUPPORTED_OPTION(opt) \ 673 do { \ 674 if (opt) { \ 675 if (FLAG_IS_CMDLINE(opt)) { \ 676 warning("-XX:+" #opt " not supported in this VM"); \ 677 } \ 678 FLAG_SET_DEFAULT(opt, false); \ 679 } \ 680 } while(0) 681 682 // similar to UNSUPPORTED_OPTION but sets flag to NULL 683 #define UNSUPPORTED_OPTION_NULL(opt) \ 684 do { \ 685 if (opt) { \ 686 if (FLAG_IS_CMDLINE(opt)) { \ 687 warning("-XX flag " #opt " not supported in this VM"); \ 688 } \ 689 FLAG_SET_DEFAULT(opt, NULL); \ 690 } \ 691 } while(0) 692 693 // Initialize options not supported in this release, with a warning 694 // if they were explicitly requested on the command-line 695 #define UNSUPPORTED_OPTION_INIT(opt, value) \ 696 do { \ 697 if (FLAG_IS_CMDLINE(opt)) { \ 698 warning("-XX flag " #opt " not supported in this VM"); \ 699 } \ 700 FLAG_SET_DEFAULT(opt, value); \ 701 } while(0) 702 703 #endif // SHARE_RUNTIME_ARGUMENTS_HPP