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