1 /*
2 * Copyright (c) 1997, 2020, 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/allocation.hpp"
31 #include "runtime/flags/jvmFlag.hpp"
32 #include "runtime/java.hpp"
33 #include "runtime/os.hpp"
34 #include "runtime/perfData.hpp"
35 #include "utilities/debug.hpp"
36
37 // Arguments parses the command line and recognizes options
38
39 // Invocation API hook typedefs (these should really be defined in jni.h)
40 extern "C" {
41 typedef void (JNICALL *abort_hook_t)(void);
42 typedef void (JNICALL *exit_hook_t)(jint code);
43 typedef jint (JNICALL *vfprintf_hook_t)(FILE *fp, const char *format, va_list args) ATTRIBUTE_PRINTF(2, 0);
44 }
45
46 // Obsolete or deprecated -XX flag.
47 struct SpecialFlag {
48 const char* name;
49 JDK_Version deprecated_in; // When the deprecation warning started (or "undefined").
50 JDK_Version obsolete_in; // When the obsolete warning started (or "undefined").
51 JDK_Version expired_in; // When the option expires (or "undefined").
52 };
53
54 // PathString is used as:
55 // - the underlying value for a SystemProperty
56 // - the path portion of an --patch-module module/path pair
57 // - the string that represents the system boot class path, Arguments::_system_boot_class_path.
58 class PathString : public CHeapObj<mtArguments> {
59 protected:
60 char* _value;
61 public:
62 char* value() const { return _value; }
63
64 bool set_value(const char *value);
65 void append_value(const char *value);
66
67 PathString(const char* value);
68 ~PathString();
69 };
70
71 // ModulePatchPath records the module/path pair as specified to --patch-module.
72 class ModulePatchPath : public CHeapObj<mtInternal> {
73 private:
74 char* _module_name;
75 PathString* _path;
76 public:
77 ModulePatchPath(const char* module_name, const char* path);
78 ~ModulePatchPath();
79
80 inline void set_path(const char* path) { _path->set_value(path); }
81 inline const char* module_name() const { return _module_name; }
82 inline char* path_string() const { return _path->value(); }
83 };
84
85 // Element describing System and User (-Dkey=value flags) defined property.
86 //
87 // An internal SystemProperty is one that has been removed in
88 // jdk.internal.VM.saveAndRemoveProperties, like jdk.boot.class.path.append.
89 //
90 class SystemProperty : public PathString {
91 private:
92 char* _key;
93 SystemProperty* _next;
94 bool _internal;
95 bool _writeable;
96 bool writeable() { return _writeable; }
97
98 public:
99 // Accessors
100 char* value() const { return PathString::value(); }
101 const char* key() const { return _key; }
102 bool internal() const { return _internal; }
103 SystemProperty* next() const { return _next; }
104 void set_next(SystemProperty* next) { _next = next; }
105
106 bool is_readable() const {
107 return !_internal || strcmp(_key, "jdk.boot.class.path.append") == 0;
108 }
109
110 // A system property should only have its value set
111 // via an external interface if it is a writeable property.
112 // The internal, non-writeable property jdk.boot.class.path.append
113 // is the only exception to this rule. It can be set externally
114 // via -Xbootclasspath/a or JVMTI OnLoad phase call to AddToBootstrapClassLoaderSearch.
115 // In those cases for jdk.boot.class.path.append, the base class
116 // set_value and append_value methods are called directly.
117 bool set_writeable_value(const char *value) {
118 if (writeable()) {
119 return set_value(value);
120 }
121 return false;
122 }
123 void append_writeable_value(const char *value) {
124 if (writeable()) {
125 append_value(value);
126 }
127 }
128
129 // Constructor
130 SystemProperty(const char* key, const char* value, bool writeable, bool internal = false);
131 };
132
133
134 // For use by -agentlib, -agentpath and -Xrun
135 class AgentLibrary : public CHeapObj<mtArguments> {
136 friend class AgentLibraryList;
137 public:
138 // Is this library valid or not. Don't rely on os_lib == NULL as statically
139 // linked lib could have handle of RTLD_DEFAULT which == 0 on some platforms
140 enum AgentState {
141 agent_invalid = 0,
142 agent_valid = 1
143 };
144
145 private:
146 char* _name;
147 char* _options;
148 void* _os_lib;
149 bool _is_absolute_path;
150 bool _is_static_lib;
151 bool _is_instrument_lib;
152 AgentState _state;
153 AgentLibrary* _next;
154
155 public:
156 // Accessors
157 const char* name() const { return _name; }
158 char* options() const { return _options; }
159 bool is_absolute_path() const { return _is_absolute_path; }
160 void* os_lib() const { return _os_lib; }
161 void set_os_lib(void* os_lib) { _os_lib = os_lib; }
162 AgentLibrary* next() const { return _next; }
163 bool is_static_lib() const { return _is_static_lib; }
164 bool is_instrument_lib() const { return _is_instrument_lib; }
165 void set_static_lib(bool is_static_lib) { _is_static_lib = is_static_lib; }
166 bool valid() { return (_state == agent_valid); }
167 void set_valid() { _state = agent_valid; }
168 void set_invalid() { _state = agent_invalid; }
169
170 // Constructor
171 AgentLibrary(const char* name, const char* options, bool is_absolute_path,
172 void* os_lib, bool instrument_lib=false);
173 };
174
175 // maintain an order of entry list of AgentLibrary
176 class AgentLibraryList {
177 private:
178 AgentLibrary* _first;
179 AgentLibrary* _last;
180 public:
181 bool is_empty() const { return _first == NULL; }
182 AgentLibrary* first() const { return _first; }
183
184 // add to the end of the list
185 void add(AgentLibrary* lib) {
186 if (is_empty()) {
187 _first = _last = lib;
188 } else {
189 _last->_next = lib;
190 _last = lib;
191 }
192 lib->_next = NULL;
193 }
194
195 // search for and remove a library known to be in the list
196 void remove(AgentLibrary* lib) {
197 AgentLibrary* curr;
198 AgentLibrary* prev = NULL;
199 for (curr = first(); curr != NULL; prev = curr, curr = curr->next()) {
200 if (curr == lib) {
201 break;
202 }
203 }
204 assert(curr != NULL, "always should be found");
205
206 if (curr != NULL) {
207 // it was found, by-pass this library
208 if (prev == NULL) {
209 _first = curr->_next;
210 } else {
211 prev->_next = curr->_next;
212 }
213 if (curr == _last) {
214 _last = prev;
215 }
216 curr->_next = NULL;
217 }
218 }
219
220 AgentLibraryList() {
221 _first = NULL;
222 _last = NULL;
223 }
224 };
225
226 // Helper class for controlling the lifetime of JavaVMInitArgs objects.
227 class ScopedVMInitArgs;
228
229 // Most logging functions require 5 tags. Some of them may be _NO_TAG.
230 typedef struct {
231 const char* alias_name;
232 LogLevelType level;
233 bool exactMatch;
234 LogTagType tag0;
235 LogTagType tag1;
236 LogTagType tag2;
237 LogTagType tag3;
238 LogTagType tag4;
239 LogTagType tag5;
240 } AliasedLoggingFlag;
241
242 class Arguments : AllStatic {
243 friend class VMStructs;
244 friend class JvmtiExport;
245 friend class CodeCacheExtensions;
246 friend class ArgumentsTest;
247 public:
248 // Operation modi
249 enum Mode {
250 _int, // corresponds to -Xint
251 _mixed, // corresponds to -Xmixed
252 _comp // corresponds to -Xcomp
253 };
254
255 enum ArgsRange {
256 arg_unreadable = -3,
257 arg_too_small = -2,
258 arg_too_big = -1,
259 arg_in_range = 0
260 };
261
262 enum PropertyAppendable {
263 AppendProperty,
264 AddProperty
265 };
266
267 enum PropertyWriteable {
268 WriteableProperty,
269 UnwriteableProperty
270 };
271
272 enum PropertyInternal {
273 InternalProperty,
274 ExternalProperty
275 };
276
277 private:
278
279 // a pointer to the flags file name if it is specified
280 static char* _jvm_flags_file;
281 // an array containing all flags specified in the .hotspotrc file
282 static char** _jvm_flags_array;
283 static int _num_jvm_flags;
284 // an array containing all jvm arguments specified in the command line
285 static char** _jvm_args_array;
286 static int _num_jvm_args;
287 // string containing all java command (class/jarfile name and app args)
288 static char* _java_command;
289
290 // Property list
291 static SystemProperty* _system_properties;
292
293 // Quick accessor to System properties in the list:
294 static SystemProperty *_sun_boot_library_path;
295 static SystemProperty *_java_library_path;
296 static SystemProperty *_java_home;
297 static SystemProperty *_java_class_path;
298 static SystemProperty *_jdk_boot_class_path_append;
299 static SystemProperty *_vm_info;
300
301 // --patch-module=module=<file>(<pathsep><file>)*
302 // Each element contains the associated module name, path
303 // string pair as specified to --patch-module.
304 static GrowableArray<ModulePatchPath*>* _patch_mod_prefix;
305
306 // The constructed value of the system class path after
307 // argument processing and JVMTI OnLoad additions via
308 // calls to AddToBootstrapClassLoaderSearch. This is the
309 // final form before ClassLoader::setup_bootstrap_search().
310 // Note: since --patch-module is a module name/path pair, the
311 // system boot class path string no longer contains the "prefix"
312 // to the boot class path base piece as it did when
313 // -Xbootclasspath/p was supported.
314 static PathString *_system_boot_class_path;
315
316 // Set if a modular java runtime image is present vs. a build with exploded modules
317 static bool _has_jimage;
318
319 // temporary: to emit warning if the default ext dirs are not empty.
320 // remove this variable when the warning is no longer needed.
321 static char* _ext_dirs;
322
323 // java.vendor.url.bug, bug reporting URL for fatal errors.
324 static const char* _java_vendor_url_bug;
325
326 // sun.java.launcher, private property to provide information about
327 // java launcher
328 static const char* _sun_java_launcher;
329
330 // was this VM created via the -XXaltjvm=<path> option
331 static bool _sun_java_launcher_is_altjvm;
332
333 // Option flags
334 static const char* _gc_log_filename;
335 // Value of the conservative maximum heap alignment needed
336 static size_t _conservative_max_heap_alignment;
337
338 // -Xrun arguments
339 static AgentLibraryList _libraryList;
340 static void add_init_library(const char* name, char* options);
341
342 // -agentlib and -agentpath arguments
343 static AgentLibraryList _agentList;
344 static void add_init_agent(const char* name, char* options, bool absolute_path);
345 static void add_instrument_agent(const char* name, char* options, bool absolute_path);
346
347 // Late-binding agents not started via arguments
348 static void add_loaded_agent(AgentLibrary *agentLib);
349
350 // Operation modi
351 static Mode _mode;
352 static void set_mode_flags(Mode mode);
353 static bool _java_compiler;
354 static void set_java_compiler(bool arg) { _java_compiler = arg; }
355 static bool java_compiler() { return _java_compiler; }
356
357 // -Xdebug flag
358 static bool _xdebug_mode;
359 static void set_xdebug_mode(bool arg) { _xdebug_mode = arg; }
360 static bool xdebug_mode() { return _xdebug_mode; }
361
362 // preview features
363 static bool _enable_preview;
364
365 // Used to save default settings
366 static bool _AlwaysCompileLoopMethods;
367 static bool _UseOnStackReplacement;
368 static bool _BackgroundCompilation;
369 static bool _ClipInlining;
370 static intx _Tier3InvokeNotifyFreqLog;
371 static intx _Tier4InvocationThreshold;
372
373 // GC ergonomics
374 static void set_conservative_max_heap_alignment();
375 static void set_use_compressed_oops();
376 static void set_use_compressed_klass_ptrs();
377 static jint set_ergonomics_flags();
378 static jint set_shared_spaces_flags_and_archive_paths();
379 // limits the given memory size by the maximum amount of memory this process is
380 // currently allowed to allocate or reserve.
381 static julong limit_by_allocatable_memory(julong size);
382 // Setup heap size
383 static void set_heap_size();
384
385 // Bytecode rewriting
386 static void set_bytecode_flags();
387
388 // Invocation API hooks
389 static abort_hook_t _abort_hook;
390 static exit_hook_t _exit_hook;
391 static vfprintf_hook_t _vfprintf_hook;
392
393 // System properties
394 static bool add_property(const char* prop, PropertyWriteable writeable=WriteableProperty,
395 PropertyInternal internal=ExternalProperty);
396
397 // Used for module system related properties: converted from command-line flags.
398 // Basic properties are writeable as they operate as "last one wins" and will get overwritten.
399 // Numbered properties are never writeable, and always internal.
400 static bool create_module_property(const char* prop_name, const char* prop_value, PropertyInternal internal);
401 static bool create_numbered_module_property(const char* prop_base_name, const char* prop_value, unsigned int count);
402
403 static int process_patch_mod_option(const char* patch_mod_tail, bool* patch_mod_javabase);
404
405 // Aggressive optimization flags.
406 static jint set_aggressive_opts_flags();
407
408 static jint set_aggressive_heap_flags();
409
410 // Argument parsing
411 static void do_pd_flag_adjustments();
412 static bool parse_argument(const char* arg, JVMFlag::Flags origin);
413 static bool process_argument(const char* arg, jboolean ignore_unrecognized, JVMFlag::Flags origin);
414 static void process_java_launcher_argument(const char*, void*);
415 static void process_java_compiler_argument(const char* arg);
416 static jint parse_options_environment_variable(const char* name, ScopedVMInitArgs* vm_args);
417 static jint parse_java_tool_options_environment_variable(ScopedVMInitArgs* vm_args);
418 static jint parse_java_options_environment_variable(ScopedVMInitArgs* vm_args);
419 static jint parse_vm_options_file(const char* file_name, ScopedVMInitArgs* vm_args);
420 static jint parse_options_buffer(const char* name, char* buffer, const size_t buf_len, ScopedVMInitArgs* vm_args);
421 static jint parse_xss(const JavaVMOption* option, const char* tail, intx* out_ThreadStackSize);
422 static jint insert_vm_options_file(const JavaVMInitArgs* args,
423 const char* vm_options_file,
424 const int vm_options_file_pos,
425 ScopedVMInitArgs* vm_options_file_args,
426 ScopedVMInitArgs* args_out);
427 static bool args_contains_vm_options_file_arg(const JavaVMInitArgs* args);
428 static jint expand_vm_options_as_needed(const JavaVMInitArgs* args_in,
429 ScopedVMInitArgs* mod_args,
430 JavaVMInitArgs** args_out);
431 static jint match_special_option_and_act(const JavaVMInitArgs* args,
432 ScopedVMInitArgs* args_out);
433
434 static bool handle_deprecated_print_gc_flags();
435
436 static jint parse_vm_init_args(const JavaVMInitArgs *vm_options_args,
437 const JavaVMInitArgs *java_tool_options_args,
438 const JavaVMInitArgs *java_options_args,
439 const JavaVMInitArgs *cmd_line_args);
440 static jint parse_each_vm_init_arg(const JavaVMInitArgs* args, bool* patch_mod_javabase, JVMFlag::Flags origin);
441 static jint finalize_vm_init_args(bool patch_mod_javabase);
442 static bool is_bad_option(const JavaVMOption* option, jboolean ignore, const char* option_type);
443
444 static bool is_bad_option(const JavaVMOption* option, jboolean ignore) {
445 return is_bad_option(option, ignore, NULL);
446 }
447
448 static void describe_range_error(ArgsRange errcode);
449 static ArgsRange check_memory_size(julong size, julong min_size, julong max_size);
450 static ArgsRange parse_memory_size(const char* s, julong* long_arg,
451 julong min_size, julong max_size = max_uintx);
452 // Parse a string for a unsigned integer. Returns true if value
453 // is an unsigned integer greater than or equal to the minimum
454 // parameter passed and returns the value in uintx_arg. Returns
455 // false otherwise, with uintx_arg undefined.
456 static bool parse_uintx(const char* value, uintx* uintx_arg,
457 uintx min_size);
458
459 // methods to build strings from individual args
460 static void build_jvm_args(const char* arg);
461 static void build_jvm_flags(const char* arg);
462 static void add_string(char*** bldarray, int* count, const char* arg);
463 static const char* build_resource_string(char** args, int count);
464
465 // Returns true if the flag is obsolete (and not yet expired).
466 // In this case the 'version' buffer is filled in with
467 // the version number when the flag became obsolete.
468 static bool is_obsolete_flag(const char* flag_name, JDK_Version* version);
469
470 #ifndef PRODUCT
471 static const char* removed_develop_logging_flag_name(const char* name);
472 #endif // PRODUCT
473
474 // Returns 1 if the flag is deprecated (and not yet obsolete or expired).
475 // In this case the 'version' buffer is filled in with the version number when
476 // the flag became deprecated.
477 // Returns -1 if the flag is expired or obsolete.
478 // Returns 0 otherwise.
479 static int is_deprecated_flag(const char* flag_name, JDK_Version* version);
480
481 // Return the real name for the flag passed on the command line (either an alias name or "flag_name").
482 static const char* real_flag_name(const char *flag_name);
483
484 // Return the "real" name for option arg if arg is an alias, and print a warning if arg is deprecated.
485 // Return NULL if the arg has expired.
486 static const char* handle_aliases_and_deprecation(const char* arg, bool warn);
487 static bool lookup_logging_aliases(const char* arg, char* buffer);
488 static AliasedLoggingFlag catch_logging_aliases(const char* name, bool on);
489
490 static char* SharedArchivePath;
491 static char* SharedDynamicArchivePath;
492 static size_t _default_SharedBaseAddress; // The default value specified in globals.hpp
493 static int num_archives(const char* archive_path) NOT_CDS_RETURN_(0);
494 static void extract_shared_archive_paths(const char* archive_path,
495 char** base_archive_path,
496 char** top_archive_path) NOT_CDS_RETURN;
497
498 public:
499 // Parses the arguments, first phase
500 static jint parse(const JavaVMInitArgs* args);
501 // Apply ergonomics
502 static jint apply_ergo();
503 // Adjusts the arguments after the OS have adjusted the arguments
504 static jint adjust_after_os();
505
506 // Check for consistency in the selection of the garbage collector.
507 static bool check_gc_consistency(); // Check user-selected gc
508 // Check consistency or otherwise of VM argument settings
509 static bool check_vm_args_consistency();
510 // Used by os_solaris
511 static bool process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized);
512
513 static size_t conservative_max_heap_alignment() { return _conservative_max_heap_alignment; }
514 // Return the maximum size a heap with compressed oops can take
515 static size_t max_heap_for_compressed_oops();
516
517 // return a char* array containing all options
518 static char** jvm_flags_array() { return _jvm_flags_array; }
519 static char** jvm_args_array() { return _jvm_args_array; }
520 static int num_jvm_flags() { return _num_jvm_flags; }
521 static int num_jvm_args() { return _num_jvm_args; }
522 // return the arguments passed to the Java application
523 static const char* java_command() { return _java_command; }
524
525 // print jvm_flags, jvm_args and java_command
526 static void print_on(outputStream* st);
527 static void print_summary_on(outputStream* st);
528
529 // convenient methods to get and set jvm_flags_file
530 static const char* get_jvm_flags_file() { return _jvm_flags_file; }
531 static void set_jvm_flags_file(const char *value) {
532 if (_jvm_flags_file != NULL) {
533 os::free(_jvm_flags_file);
534 }
535 _jvm_flags_file = os::strdup_check_oom(value);
536 }
537 // convenient methods to obtain / print jvm_flags and jvm_args
538 static const char* jvm_flags() { return build_resource_string(_jvm_flags_array, _num_jvm_flags); }
539 static const char* jvm_args() { return build_resource_string(_jvm_args_array, _num_jvm_args); }
540 static void print_jvm_flags_on(outputStream* st);
541 static void print_jvm_args_on(outputStream* st);
542
543 // -Dkey=value flags
544 static SystemProperty* system_properties() { return _system_properties; }
545 static const char* get_property(const char* key);
546
547 // -Djava.vendor.url.bug
548 static const char* java_vendor_url_bug() { return _java_vendor_url_bug; }
549
550 // -Dsun.java.launcher
551 static const char* sun_java_launcher() { return _sun_java_launcher; }
552 // Was VM created by a Java launcher?
553 static bool created_by_java_launcher();
554 // -Dsun.java.launcher.is_altjvm
555 static bool sun_java_launcher_is_altjvm();
556
557 // -Xrun
558 static AgentLibrary* libraries() { return _libraryList.first(); }
559 static bool init_libraries_at_startup() { return !_libraryList.is_empty(); }
560 static void convert_library_to_agent(AgentLibrary* lib)
561 { _libraryList.remove(lib);
562 _agentList.add(lib); }
563
564 // -agentlib -agentpath
565 static AgentLibrary* agents() { return _agentList.first(); }
566 static bool init_agents_at_startup() { return !_agentList.is_empty(); }
567
568 // abort, exit, vfprintf hooks
569 static abort_hook_t abort_hook() { return _abort_hook; }
570 static exit_hook_t exit_hook() { return _exit_hook; }
571 static vfprintf_hook_t vfprintf_hook() { return _vfprintf_hook; }
572
573 static const char* GetSharedArchivePath() { return SharedArchivePath; }
574 static const char* GetSharedDynamicArchivePath() { return SharedDynamicArchivePath; }
575 static size_t default_SharedBaseAddress() { return _default_SharedBaseAddress; }
576 // Java launcher properties
577 static void process_sun_java_launcher_properties(JavaVMInitArgs* args);
578
579 // System properties
580 static void init_system_properties();
581
582 // Update/Initialize System properties after JDK version number is known
583 static void init_version_specific_system_properties();
584
585 // Update VM info property - called after argument parsing
586 static void update_vm_info_property(const char* vm_info) {
587 _vm_info->set_value(vm_info);
588 }
589
590 // Property List manipulation
591 static void PropertyList_add(SystemProperty *element);
592 static void PropertyList_add(SystemProperty** plist, SystemProperty *element);
593 static void PropertyList_add(SystemProperty** plist, const char* k, const char* v, bool writeable, bool internal);
594
595 static void PropertyList_unique_add(SystemProperty** plist, const char* k, const char* v,
596 PropertyAppendable append, PropertyWriteable writeable,
597 PropertyInternal internal);
598 static const char* PropertyList_get_value(SystemProperty* plist, const char* key);
599 static const char* PropertyList_get_readable_value(SystemProperty* plist, const char* key);
600 static int PropertyList_count(SystemProperty* pl);
601 static int PropertyList_readable_count(SystemProperty* pl);
602 static const char* PropertyList_get_key_at(SystemProperty* pl,int index);
603 static char* PropertyList_get_value_at(SystemProperty* pl,int index);
604
605 static bool is_internal_module_property(const char* option);
606
607 // Miscellaneous System property value getter and setters.
608 static void set_dll_dir(const char *value) { _sun_boot_library_path->set_value(value); }
609 static void set_java_home(const char *value) { _java_home->set_value(value); }
610 static void set_library_path(const char *value) { _java_library_path->set_value(value); }
611 static void set_ext_dirs(char *value) { _ext_dirs = os::strdup_check_oom(value); }
612
613 // Set up the underlying pieces of the system boot class path
614 static void add_patch_mod_prefix(const char *module_name, const char *path, bool* patch_mod_javabase);
615 static void set_sysclasspath(const char *value, bool has_jimage) {
616 // During start up, set by os::set_boot_path()
617 assert(get_sysclasspath() == NULL, "System boot class path previously set");
618 _system_boot_class_path->set_value(value);
619 _has_jimage = has_jimage;
620 }
621 static void append_sysclasspath(const char *value) {
622 _system_boot_class_path->append_value(value);
623 _jdk_boot_class_path_append->append_value(value);
624 }
625
626 static GrowableArray<ModulePatchPath*>* get_patch_mod_prefix() { return _patch_mod_prefix; }
627 static char* get_sysclasspath() { return _system_boot_class_path->value(); }
628 static char* get_jdk_boot_class_path_append() { return _jdk_boot_class_path_append->value(); }
629 static bool has_jimage() { return _has_jimage; }
630
631 static char* get_java_home() { return _java_home->value(); }
632 static char* get_dll_dir() { return _sun_boot_library_path->value(); }
633 static char* get_ext_dirs() { return _ext_dirs; }
634 static char* get_appclasspath() { return _java_class_path->value(); }
635 static void fix_appclasspath();
636
637 static char* get_default_shared_archive_path() NOT_CDS_RETURN_(NULL);
638 static bool init_shared_archive_paths() NOT_CDS_RETURN_(false);
639
640 // Operation modi
641 static Mode mode() { return _mode; }
642 static bool is_interpreter_only() { return mode() == _int; }
643
644 // preview features
645 static void set_enable_preview() { _enable_preview = true; }
646 static bool enable_preview() { return _enable_preview; }
647
648 // Utility: copies src into buf, replacing "%%" with "%" and "%p" with pid.
649 static bool copy_expand_pid(const char* src, size_t srclen, char* buf, size_t buflen);
650
651 static void check_unsupported_dumping_properties() NOT_CDS_RETURN;
652
653 static bool check_unsupported_cds_runtime_properties() NOT_CDS_RETURN0;
654
655 static bool atojulong(const char *s, julong* result);
656
657 static bool has_jfr_option() NOT_JFR_RETURN_(false);
658
659 static bool is_dumping_archive() { return DumpSharedSpaces || DynamicDumpSharedSpaces; }
660
661 static void assert_is_dumping_archive() {
662 assert(Arguments::is_dumping_archive(), "dump time only");
663 }
664
665 DEBUG_ONLY(static bool verify_special_jvm_flags(bool check_globals);)
666 };
667
668 // Disable options not supported in this release, with a warning if they
669 // were explicitly requested on the command-line
670 #define UNSUPPORTED_OPTION(opt) \
671 do { \
672 if (opt) { \
673 if (FLAG_IS_CMDLINE(opt)) { \
674 warning("-XX:+" #opt " not supported in this VM"); \
675 } \
676 FLAG_SET_DEFAULT(opt, false); \
677 } \
678 } while(0)
679
680 // similar to UNSUPPORTED_OPTION but sets flag to NULL
681 #define UNSUPPORTED_OPTION_NULL(opt) \
682 do { \
683 if (opt) { \
684 if (FLAG_IS_CMDLINE(opt)) { \
685 warning("-XX flag " #opt " not supported in this VM"); \
686 } \
687 FLAG_SET_DEFAULT(opt, NULL); \
688 } \
689 } while(0)
690
691
692 #endif // SHARE_RUNTIME_ARGUMENTS_HPP