1 /* 2 * Copyright (c) 1997, 2016, 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_VM_RUNTIME_ARGUMENTS_HPP 26 #define SHARE_VM_RUNTIME_ARGUMENTS_HPP 27 28 #include "logging/logLevel.hpp" 29 #include "logging/logTag.hpp" 30 #include "runtime/java.hpp" 31 #include "runtime/os.hpp" 32 #include "runtime/perfData.hpp" 33 #include "utilities/debug.hpp" 34 35 // Arguments parses the command line and recognizes options 36 37 // Invocation API hook typedefs (these should really be defined in jni.hpp) 38 extern "C" { 39 typedef void (JNICALL *abort_hook_t)(void); 40 typedef void (JNICALL *exit_hook_t)(jint code); 41 typedef jint (JNICALL *vfprintf_hook_t)(FILE *fp, const char *format, va_list args) ATTRIBUTE_PRINTF(2, 0); 42 } 43 44 // PathString is used as: 45 // - the underlying value for a SystemProperty 46 // - the path portion of an -Xpatch module/path pair 47 // - the string that represents the system boot class path, Arguments::_system_boot_class_path. 48 class PathString : public CHeapObj<mtArguments> { 49 protected: 50 char* _value; 51 public: 52 char* value() const { return _value; } 53 54 bool set_value(const char *value) { 55 if (_value != NULL) { 56 FreeHeap(_value); 57 } 58 _value = AllocateHeap(strlen(value)+1, mtArguments); 59 assert(_value != NULL, "Unable to allocate space for new path value"); 60 if (_value != NULL) { 61 strcpy(_value, value); 62 } else { 63 // not able to allocate 64 return false; 65 } 66 return true; 67 } 68 69 void append_value(const char *value) { 70 char *sp; 71 size_t len = 0; 72 if (value != NULL) { 73 len = strlen(value); 74 if (_value != NULL) { 75 len += strlen(_value); 76 } 77 sp = AllocateHeap(len+2, mtArguments); 78 assert(sp != NULL, "Unable to allocate space for new append path value"); 79 if (sp != NULL) { 80 if (_value != NULL) { 81 strcpy(sp, _value); 82 strcat(sp, os::path_separator()); 83 strcat(sp, value); 84 FreeHeap(_value); 85 } else { 86 strcpy(sp, value); 87 } 88 _value = sp; 89 } 90 } 91 } 92 93 PathString(const char* value) { 94 if (value == NULL) { 95 _value = NULL; 96 } else { 97 _value = AllocateHeap(strlen(value)+1, mtArguments); 98 strcpy(_value, value); 99 } 100 } 101 102 ~PathString() { 103 if (_value != NULL) { 104 FreeHeap(_value); 105 _value = NULL; 106 } 107 } 108 }; 109 110 // ModuleXPatchPath records the module/path pair as specified to -Xpatch. 111 class ModuleXPatchPath : public CHeapObj<mtInternal> { 112 private: 113 char* _module_name; 114 PathString* _path; 115 public: 116 ModuleXPatchPath(const char* module_name, const char* path) { 117 assert(module_name != NULL && path != NULL, "Invalid module name or path value"); 118 size_t len = strlen(module_name) + 1; 119 _module_name = AllocateHeap(len, mtInternal); 120 strncpy(_module_name, module_name, len); // copy the trailing null 121 _path = new PathString(path); 122 } 123 124 ~ModuleXPatchPath() { 125 if (_module_name != NULL) { 126 FreeHeap(_module_name); 127 _module_name = NULL; 128 } 129 if (_path != NULL) { 130 delete _path; 131 _path = NULL; 132 } 133 } 134 135 inline void set_path(const char* path) { _path->set_value(path); } 136 inline const char* module_name() const { return _module_name; } 137 inline char* path_string() const { return _path->value(); } 138 }; 139 140 // Element describing System and User (-Dkey=value flags) defined property. 141 // 142 // An internal SystemProperty is one that has been removed in 143 // jdk.internal.VM.saveAndRemoveProperties, like jdk.boot.class.path.append. 144 // 145 class SystemProperty : public PathString { 146 private: 147 char* _key; 148 SystemProperty* _next; 149 bool _internal; 150 bool _writeable; 151 bool writeable() { return _writeable; } 152 153 public: 154 // Accessors 155 char* value() const { return PathString::value(); } 156 const char* key() const { return _key; } 157 bool internal() const { return _internal; } 158 SystemProperty* next() const { return _next; } 159 void set_next(SystemProperty* next) { _next = next; } 160 161 // A system property should only have its value set 162 // via an external interface if it is a writeable property. 163 // The internal, non-writeable property jdk.boot.class.path.append 164 // is the only exception to this rule. It can be set externally 165 // via -Xbootclasspath/a or JVMTI OnLoad phase call to AddToBootstrapClassLoaderSearch. 166 // In those cases for jdk.boot.class.path.append, the base class 167 // set_value and append_value methods are called directly. 168 bool set_writeable_value(const char *value) { 169 if (writeable()) { 170 return set_value(value); 171 } 172 return false; 173 } 174 175 // Constructor 176 SystemProperty(const char* key, const char* value, bool writeable, bool internal = false) : PathString(value) { 177 if (key == NULL) { 178 _key = NULL; 179 } else { 180 _key = AllocateHeap(strlen(key)+1, mtArguments); 181 strcpy(_key, key); 182 } 183 _next = NULL; 184 _internal = internal; 185 _writeable = writeable; 186 } 187 }; 188 189 190 // For use by -agentlib, -agentpath and -Xrun 191 class AgentLibrary : public CHeapObj<mtArguments> { 192 friend class AgentLibraryList; 193 public: 194 // Is this library valid or not. Don't rely on os_lib == NULL as statically 195 // linked lib could have handle of RTLD_DEFAULT which == 0 on some platforms 196 enum AgentState { 197 agent_invalid = 0, 198 agent_valid = 1 199 }; 200 201 private: 202 char* _name; 203 char* _options; 204 void* _os_lib; 205 bool _is_absolute_path; 206 bool _is_static_lib; 207 AgentState _state; 208 AgentLibrary* _next; 209 210 public: 211 // Accessors 212 const char* name() const { return _name; } 213 char* options() const { return _options; } 214 bool is_absolute_path() const { return _is_absolute_path; } 215 void* os_lib() const { return _os_lib; } 216 void set_os_lib(void* os_lib) { _os_lib = os_lib; } 217 AgentLibrary* next() const { return _next; } 218 bool is_static_lib() const { return _is_static_lib; } 219 void set_static_lib(bool is_static_lib) { _is_static_lib = is_static_lib; } 220 bool valid() { return (_state == agent_valid); } 221 void set_valid() { _state = agent_valid; } 222 void set_invalid() { _state = agent_invalid; } 223 224 // Constructor 225 AgentLibrary(const char* name, const char* options, bool is_absolute_path, void* os_lib) { 226 _name = AllocateHeap(strlen(name)+1, mtArguments); 227 strcpy(_name, name); 228 if (options == NULL) { 229 _options = NULL; 230 } else { 231 _options = AllocateHeap(strlen(options)+1, mtArguments); 232 strcpy(_options, options); 233 } 234 _is_absolute_path = is_absolute_path; 235 _os_lib = os_lib; 236 _next = NULL; 237 _state = agent_invalid; 238 _is_static_lib = false; 239 } 240 }; 241 242 // maintain an order of entry list of AgentLibrary 243 class AgentLibraryList VALUE_OBJ_CLASS_SPEC { 244 private: 245 AgentLibrary* _first; 246 AgentLibrary* _last; 247 public: 248 bool is_empty() const { return _first == NULL; } 249 AgentLibrary* first() const { return _first; } 250 251 // add to the end of the list 252 void add(AgentLibrary* lib) { 253 if (is_empty()) { 254 _first = _last = lib; 255 } else { 256 _last->_next = lib; 257 _last = lib; 258 } 259 lib->_next = NULL; 260 } 261 262 // search for and remove a library known to be in the list 263 void remove(AgentLibrary* lib) { 264 AgentLibrary* curr; 265 AgentLibrary* prev = NULL; 266 for (curr = first(); curr != NULL; prev = curr, curr = curr->next()) { 267 if (curr == lib) { 268 break; 269 } 270 } 271 assert(curr != NULL, "always should be found"); 272 273 if (curr != NULL) { 274 // it was found, by-pass this library 275 if (prev == NULL) { 276 _first = curr->_next; 277 } else { 278 prev->_next = curr->_next; 279 } 280 if (curr == _last) { 281 _last = prev; 282 } 283 curr->_next = NULL; 284 } 285 } 286 287 AgentLibraryList() { 288 _first = NULL; 289 _last = NULL; 290 } 291 }; 292 293 // Helper class for controlling the lifetime of JavaVMInitArgs objects. 294 class ScopedVMInitArgs; 295 296 // Most logging functions require 5 tags. Some of them may be _NO_TAG. 297 typedef struct { 298 const char* alias_name; 299 LogLevelType level; 300 bool exactMatch; 301 LogTagType tag0; 302 LogTagType tag1; 303 LogTagType tag2; 304 LogTagType tag3; 305 LogTagType tag4; 306 LogTagType tag5; 307 } AliasedLoggingFlag; 308 309 class Arguments : AllStatic { 310 friend class VMStructs; 311 friend class JvmtiExport; 312 friend class CodeCacheExtensions; 313 public: 314 // Operation modi 315 enum Mode { 316 _int, // corresponds to -Xint 317 _mixed, // corresponds to -Xmixed 318 _comp // corresponds to -Xcomp 319 }; 320 321 enum ArgsRange { 322 arg_unreadable = -3, 323 arg_too_small = -2, 324 arg_too_big = -1, 325 arg_in_range = 0 326 }; 327 328 private: 329 330 // a pointer to the flags file name if it is specified 331 static char* _jvm_flags_file; 332 // an array containing all flags specified in the .hotspotrc file 333 static char** _jvm_flags_array; 334 static int _num_jvm_flags; 335 // an array containing all jvm arguments specified in the command line 336 static char** _jvm_args_array; 337 static int _num_jvm_args; 338 // string containing all java command (class/jarfile name and app args) 339 static char* _java_command; 340 341 // Property list 342 static SystemProperty* _system_properties; 343 344 // Quick accessor to System properties in the list: 345 static SystemProperty *_sun_boot_library_path; 346 static SystemProperty *_java_library_path; 347 static SystemProperty *_java_home; 348 static SystemProperty *_java_class_path; 349 static SystemProperty *_jdk_boot_class_path_append; 350 351 // -Xpatch:module=<file>(<pathsep><file>)* 352 // Each element contains the associated module name, path 353 // string pair as specified to -Xpatch. 354 static GrowableArray<ModuleXPatchPath*>* _xpatchprefix; 355 356 // The constructed value of the system class path after 357 // argument processing and JVMTI OnLoad additions via 358 // calls to AddToBootstrapClassLoaderSearch. This is the 359 // final form before ClassLoader::setup_bootstrap_search(). 360 // Note: since -Xpatch is a module name/path pair, the system 361 // boot class path string no longer contains the "prefix" to 362 // the boot class path base piece as it did when 363 // -Xbootclasspath/p was supported. 364 static PathString *_system_boot_class_path; 365 366 // Set if a modular java runtime image is present vs. a build with exploded modules 367 static bool _has_jimage; 368 369 // temporary: to emit warning if the default ext dirs are not empty. 370 // remove this variable when the warning is no longer needed. 371 static char* _ext_dirs; 372 373 // java.vendor.url.bug, bug reporting URL for fatal errors. 374 static const char* _java_vendor_url_bug; 375 376 // sun.java.launcher, private property to provide information about 377 // java launcher 378 static const char* _sun_java_launcher; 379 380 // sun.java.launcher.pid, private property 381 static int _sun_java_launcher_pid; 382 383 // was this VM created via the -XXaltjvm=<path> option 384 static bool _sun_java_launcher_is_altjvm; 385 386 // Option flags 387 static bool _has_profile; 388 static const char* _gc_log_filename; 389 // Value of the conservative maximum heap alignment needed 390 static size_t _conservative_max_heap_alignment; 391 392 static uintx _min_heap_size; 393 394 // -Xrun arguments 395 static AgentLibraryList _libraryList; 396 static void add_init_library(const char* name, char* options) 397 { _libraryList.add(new AgentLibrary(name, options, false, NULL)); } 398 399 // -agentlib and -agentpath arguments 400 static AgentLibraryList _agentList; 401 static void add_init_agent(const char* name, char* options, bool absolute_path) 402 { _agentList.add(new AgentLibrary(name, options, absolute_path, NULL)); } 403 404 // Late-binding agents not started via arguments 405 static void add_loaded_agent(AgentLibrary *agentLib) 406 { _agentList.add(agentLib); } 407 static void add_loaded_agent(const char* name, char* options, bool absolute_path, void* os_lib) 408 { _agentList.add(new AgentLibrary(name, options, absolute_path, os_lib)); } 409 410 // Operation modi 411 static Mode _mode; 412 static void set_mode_flags(Mode mode); 413 static bool _java_compiler; 414 static void set_java_compiler(bool arg) { _java_compiler = arg; } 415 static bool java_compiler() { return _java_compiler; } 416 417 // -Xdebug flag 418 static bool _xdebug_mode; 419 static void set_xdebug_mode(bool arg) { _xdebug_mode = arg; } 420 static bool xdebug_mode() { return _xdebug_mode; } 421 422 // Used to save default settings 423 static bool _AlwaysCompileLoopMethods; 424 static bool _UseOnStackReplacement; 425 static bool _BackgroundCompilation; 426 static bool _ClipInlining; 427 static bool _CIDynamicCompilePriority; 428 static intx _Tier3InvokeNotifyFreqLog; 429 static intx _Tier4InvocationThreshold; 430 431 // Tiered 432 static void set_tiered_flags(); 433 // CMS/ParNew garbage collectors 434 static void set_parnew_gc_flags(); 435 static void set_cms_and_parnew_gc_flags(); 436 // UseParallel[Old]GC 437 static void set_parallel_gc_flags(); 438 // Garbage-First (UseG1GC) 439 static void set_g1_gc_flags(); 440 // GC ergonomics 441 static void set_conservative_max_heap_alignment(); 442 static void set_use_compressed_oops(); 443 static void set_use_compressed_klass_ptrs(); 444 static void select_gc(); 445 static void set_ergonomics_flags(); 446 static void set_shared_spaces_flags(); 447 // limits the given memory size by the maximum amount of memory this process is 448 // currently allowed to allocate or reserve. 449 static julong limit_by_allocatable_memory(julong size); 450 // Setup heap size 451 static void set_heap_size(); 452 // Based on automatic selection criteria, should the 453 // low pause collector be used. 454 static bool should_auto_select_low_pause_collector(); 455 456 // Bytecode rewriting 457 static void set_bytecode_flags(); 458 459 // Invocation API hooks 460 static abort_hook_t _abort_hook; 461 static exit_hook_t _exit_hook; 462 static vfprintf_hook_t _vfprintf_hook; 463 464 // System properties 465 static bool add_property(const char* prop); 466 467 // Miscellaneous system property setter 468 static bool append_to_addmods_property(const char* module_name); 469 470 // Aggressive optimization flags. 471 static jint set_aggressive_opts_flags(); 472 473 static jint set_aggressive_heap_flags(); 474 475 // Argument parsing 476 static void do_pd_flag_adjustments(); 477 static bool parse_argument(const char* arg, Flag::Flags origin); 478 static bool process_argument(const char* arg, jboolean ignore_unrecognized, Flag::Flags origin); 479 static void process_java_launcher_argument(const char*, void*); 480 static void process_java_compiler_argument(const char* arg); 481 static jint parse_options_environment_variable(const char* name, ScopedVMInitArgs* vm_args); 482 static jint parse_java_tool_options_environment_variable(ScopedVMInitArgs* vm_args); 483 static jint parse_java_options_environment_variable(ScopedVMInitArgs* vm_args); 484 static jint parse_vm_options_file(const char* file_name, ScopedVMInitArgs* vm_args); 485 static jint parse_options_buffer(const char* name, char* buffer, const size_t buf_len, ScopedVMInitArgs* vm_args); 486 static jint insert_vm_options_file(const JavaVMInitArgs* args, 487 const char* vm_options_file, 488 const int vm_options_file_pos, 489 ScopedVMInitArgs* vm_options_file_args, 490 ScopedVMInitArgs* args_out); 491 static bool args_contains_vm_options_file_arg(const JavaVMInitArgs* args); 492 static jint expand_vm_options_as_needed(const JavaVMInitArgs* args_in, 493 ScopedVMInitArgs* mod_args, 494 JavaVMInitArgs** args_out); 495 static jint match_special_option_and_act(const JavaVMInitArgs* args, 496 ScopedVMInitArgs* args_out); 497 498 static bool handle_deprecated_print_gc_flags(); 499 500 static jint parse_vm_init_args(const JavaVMInitArgs *java_tool_options_args, 501 const JavaVMInitArgs *java_options_args, 502 const JavaVMInitArgs *cmd_line_args); 503 static jint parse_each_vm_init_arg(const JavaVMInitArgs* args, bool* xpatch_javabase, Flag::Flags origin); 504 static jint finalize_vm_init_args(); 505 static bool is_bad_option(const JavaVMOption* option, jboolean ignore, const char* option_type); 506 507 static bool is_bad_option(const JavaVMOption* option, jboolean ignore) { 508 return is_bad_option(option, ignore, NULL); 509 } 510 511 static void describe_range_error(ArgsRange errcode); 512 static ArgsRange check_memory_size(julong size, julong min_size); 513 static ArgsRange parse_memory_size(const char* s, julong* long_arg, 514 julong min_size); 515 // Parse a string for a unsigned integer. Returns true if value 516 // is an unsigned integer greater than or equal to the minimum 517 // parameter passed and returns the value in uintx_arg. Returns 518 // false otherwise, with uintx_arg undefined. 519 static bool parse_uintx(const char* value, uintx* uintx_arg, 520 uintx min_size); 521 522 // methods to build strings from individual args 523 static void build_jvm_args(const char* arg); 524 static void build_jvm_flags(const char* arg); 525 static void add_string(char*** bldarray, int* count, const char* arg); 526 static const char* build_resource_string(char** args, int count); 527 528 static bool methodExists( 529 char* className, char* methodName, 530 int classesNum, char** classes, bool* allMethods, 531 int methodsNum, char** methods, bool* allClasses 532 ); 533 534 static void parseOnlyLine( 535 const char* line, 536 short* classesNum, short* classesMax, char*** classes, bool** allMethods, 537 short* methodsNum, short* methodsMax, char*** methods, bool** allClasses 538 ); 539 540 // Returns true if the flag is obsolete (and not yet expired). 541 // In this case the 'version' buffer is filled in with 542 // the version number when the flag became obsolete. 543 static bool is_obsolete_flag(const char* flag_name, JDK_Version* version); 544 545 #ifndef PRODUCT 546 static const char* removed_develop_logging_flag_name(const char* name); 547 #endif // PRODUCT 548 549 // Returns 1 if the flag is deprecated (and not yet obsolete or expired). 550 // In this case the 'version' buffer is filled in with the version number when 551 // the flag became deprecated. 552 // Returns -1 if the flag is expired or obsolete. 553 // Returns 0 otherwise. 554 static int is_deprecated_flag(const char* flag_name, JDK_Version* version); 555 556 // Return the real name for the flag passed on the command line (either an alias name or "flag_name"). 557 static const char* real_flag_name(const char *flag_name); 558 559 // Return the "real" name for option arg if arg is an alias, and print a warning if arg is deprecated. 560 // Return NULL if the arg has expired. 561 static const char* handle_aliases_and_deprecation(const char* arg, bool warn); 562 static bool lookup_logging_aliases(const char* arg, char* buffer); 563 static AliasedLoggingFlag catch_logging_aliases(const char* name, bool on); 564 static short CompileOnlyClassesNum; 565 static short CompileOnlyClassesMax; 566 static char** CompileOnlyClasses; 567 static bool* CompileOnlyAllMethods; 568 569 static short CompileOnlyMethodsNum; 570 static short CompileOnlyMethodsMax; 571 static char** CompileOnlyMethods; 572 static bool* CompileOnlyAllClasses; 573 574 static short InterpretOnlyClassesNum; 575 static short InterpretOnlyClassesMax; 576 static char** InterpretOnlyClasses; 577 static bool* InterpretOnlyAllMethods; 578 579 static bool CheckCompileOnly; 580 581 static char* SharedArchivePath; 582 583 public: 584 // Scale compile thresholds 585 // Returns threshold scaled with CompileThresholdScaling 586 static intx scaled_compile_threshold(intx threshold, double scale); 587 static intx scaled_compile_threshold(intx threshold) { 588 return scaled_compile_threshold(threshold, CompileThresholdScaling); 589 } 590 // Returns freq_log scaled with CompileThresholdScaling 591 static intx scaled_freq_log(intx freq_log, double scale); 592 static intx scaled_freq_log(intx freq_log) { 593 return scaled_freq_log(freq_log, CompileThresholdScaling); 594 } 595 596 // Parses the arguments, first phase 597 static jint parse(const JavaVMInitArgs* args); 598 // Apply ergonomics 599 static jint apply_ergo(); 600 // Adjusts the arguments after the OS have adjusted the arguments 601 static jint adjust_after_os(); 602 603 static void set_gc_specific_flags(); 604 static bool gc_selected(); // whether a gc has been selected 605 static void select_gc_ergonomically(); 606 #if INCLUDE_JVMCI 607 // Check consistency of jvmci vm argument settings. 608 static bool check_jvmci_args_consistency(); 609 #endif 610 // Check for consistency in the selection of the garbage collector. 611 static bool check_gc_consistency(); // Check user-selected gc 612 // Check consistency or otherwise of VM argument settings 613 static bool check_vm_args_consistency(); 614 // Used by os_solaris 615 static bool process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized); 616 617 static size_t conservative_max_heap_alignment() { return _conservative_max_heap_alignment; } 618 // Return the maximum size a heap with compressed oops can take 619 static size_t max_heap_for_compressed_oops(); 620 621 // return a char* array containing all options 622 static char** jvm_flags_array() { return _jvm_flags_array; } 623 static char** jvm_args_array() { return _jvm_args_array; } 624 static int num_jvm_flags() { return _num_jvm_flags; } 625 static int num_jvm_args() { return _num_jvm_args; } 626 // return the arguments passed to the Java application 627 static const char* java_command() { return _java_command; } 628 629 // print jvm_flags, jvm_args and java_command 630 static void print_on(outputStream* st); 631 static void print_summary_on(outputStream* st); 632 633 // convenient methods to get and set jvm_flags_file 634 static const char* get_jvm_flags_file() { return _jvm_flags_file; } 635 static void set_jvm_flags_file(const char *value) { 636 if (_jvm_flags_file != NULL) { 637 os::free(_jvm_flags_file); 638 } 639 _jvm_flags_file = os::strdup_check_oom(value); 640 } 641 // convenient methods to obtain / print jvm_flags and jvm_args 642 static const char* jvm_flags() { return build_resource_string(_jvm_flags_array, _num_jvm_flags); } 643 static const char* jvm_args() { return build_resource_string(_jvm_args_array, _num_jvm_args); } 644 static void print_jvm_flags_on(outputStream* st); 645 static void print_jvm_args_on(outputStream* st); 646 647 // -Dkey=value flags 648 static SystemProperty* system_properties() { return _system_properties; } 649 static const char* get_property(const char* key); 650 651 // -Djava.vendor.url.bug 652 static const char* java_vendor_url_bug() { return _java_vendor_url_bug; } 653 654 // -Dsun.java.launcher 655 static const char* sun_java_launcher() { return _sun_java_launcher; } 656 // Was VM created by a Java launcher? 657 static bool created_by_java_launcher(); 658 // -Dsun.java.launcher.is_altjvm 659 static bool sun_java_launcher_is_altjvm(); 660 // -Dsun.java.launcher.pid 661 static int sun_java_launcher_pid() { return _sun_java_launcher_pid; } 662 663 // -Xprof 664 static bool has_profile() { return _has_profile; } 665 666 // -Xms 667 static size_t min_heap_size() { return _min_heap_size; } 668 static void set_min_heap_size(size_t v) { _min_heap_size = v; } 669 670 // -Xrun 671 static AgentLibrary* libraries() { return _libraryList.first(); } 672 static bool init_libraries_at_startup() { return !_libraryList.is_empty(); } 673 static void convert_library_to_agent(AgentLibrary* lib) 674 { _libraryList.remove(lib); 675 _agentList.add(lib); } 676 677 // -agentlib -agentpath 678 static AgentLibrary* agents() { return _agentList.first(); } 679 static bool init_agents_at_startup() { return !_agentList.is_empty(); } 680 681 // abort, exit, vfprintf hooks 682 static abort_hook_t abort_hook() { return _abort_hook; } 683 static exit_hook_t exit_hook() { return _exit_hook; } 684 static vfprintf_hook_t vfprintf_hook() { return _vfprintf_hook; } 685 686 static bool GetCheckCompileOnly () { return CheckCompileOnly; } 687 688 static const char* GetSharedArchivePath() { return SharedArchivePath; } 689 690 static bool CompileMethod(char* className, char* methodName) { 691 return 692 methodExists( 693 className, methodName, 694 CompileOnlyClassesNum, CompileOnlyClasses, CompileOnlyAllMethods, 695 CompileOnlyMethodsNum, CompileOnlyMethods, CompileOnlyAllClasses 696 ); 697 } 698 699 // Java launcher properties 700 static void process_sun_java_launcher_properties(JavaVMInitArgs* args); 701 702 // System properties 703 static void init_system_properties(); 704 705 // Update/Initialize System properties after JDK version number is known 706 static void init_version_specific_system_properties(); 707 708 // Property List manipulation 709 static void PropertyList_add(SystemProperty *element); 710 static void PropertyList_add(SystemProperty** plist, SystemProperty *element); 711 static void PropertyList_add(SystemProperty** plist, const char* k, const char* v); 712 static void PropertyList_unique_add(SystemProperty** plist, const char* k, const char* v) { 713 PropertyList_unique_add(plist, k, v, false); 714 } 715 static void PropertyList_unique_add(SystemProperty** plist, const char* k, const char* v, jboolean append); 716 static const char* PropertyList_get_value(SystemProperty* plist, const char* key); 717 static int PropertyList_count(SystemProperty* pl); 718 static const char* PropertyList_get_key_at(SystemProperty* pl,int index); 719 static char* PropertyList_get_value_at(SystemProperty* pl,int index); 720 721 // Miscellaneous System property value getter and setters. 722 static void set_dll_dir(const char *value) { _sun_boot_library_path->set_value(value); } 723 static void set_java_home(const char *value) { _java_home->set_value(value); } 724 static void set_library_path(const char *value) { _java_library_path->set_value(value); } 725 static void set_ext_dirs(char *value) { _ext_dirs = os::strdup_check_oom(value); } 726 727 // Set up the underlying pieces of the system boot class path 728 static void add_xpatchprefix(const char *module_name, const char *path, bool* xpatch_javabase); 729 static void set_sysclasspath(const char *value, bool has_jimage) { 730 // During start up, set by os::set_boot_path() 731 assert(get_sysclasspath() == NULL, "System boot class path previously set"); 732 _system_boot_class_path->set_value(value); 733 _has_jimage = has_jimage; 734 } 735 static void append_sysclasspath(const char *value) { 736 _system_boot_class_path->append_value(value); 737 _jdk_boot_class_path_append->append_value(value); 738 } 739 740 static GrowableArray<ModuleXPatchPath*>* get_xpatchprefix() { return _xpatchprefix; } 741 static char* get_sysclasspath() { return _system_boot_class_path->value(); } 742 static char* get_jdk_boot_class_path_append() { return _jdk_boot_class_path_append->value(); } 743 static bool has_jimage() { return _has_jimage; } 744 745 static char* get_java_home() { return _java_home->value(); } 746 static char* get_dll_dir() { return _sun_boot_library_path->value(); } 747 static char* get_ext_dirs() { return _ext_dirs; } 748 static char* get_appclasspath() { return _java_class_path->value(); } 749 static void fix_appclasspath(); 750 751 752 // Operation modi 753 static Mode mode() { return _mode; } 754 static bool is_interpreter_only() { return mode() == _int; } 755 756 757 // Utility: copies src into buf, replacing "%%" with "%" and "%p" with pid. 758 static bool copy_expand_pid(const char* src, size_t srclen, char* buf, size_t buflen); 759 760 static void check_unsupported_dumping_properties() NOT_CDS_RETURN; 761 762 static bool atojulong(const char *s, julong* result); 763 }; 764 765 // Disable options not supported in this release, with a warning if they 766 // were explicitly requested on the command-line 767 #define UNSUPPORTED_OPTION(opt) \ 768 do { \ 769 if (opt) { \ 770 if (FLAG_IS_CMDLINE(opt)) { \ 771 warning("-XX:+" #opt " not supported in this VM"); \ 772 } \ 773 FLAG_SET_DEFAULT(opt, false); \ 774 } \ 775 } while(0) 776 777 #endif // SHARE_VM_RUNTIME_ARGUMENTS_HPP