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 --patch-module 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 // ModulePatchPath records the module/path pair as specified to --patch-module.
111 class ModulePatchPath : public CHeapObj<mtInternal> {
112 private:
113 char* _module_name;
114 PathString* _path;
115 public:
116 ModulePatchPath(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 ~ModulePatchPath() {
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 bool is_readable() const {
162 return !_internal || strcmp(_key, "jdk.boot.class.path.append") == 0;
163 }
164
165 // A system property should only have its value set
166 // via an external interface if it is a writeable property.
167 // The internal, non-writeable property jdk.boot.class.path.append
168 // is the only exception to this rule. It can be set externally
169 // via -Xbootclasspath/a or JVMTI OnLoad phase call to AddToBootstrapClassLoaderSearch.
170 // In those cases for jdk.boot.class.path.append, the base class
171 // set_value and append_value methods are called directly.
172 bool set_writeable_value(const char *value) {
173 if (writeable()) {
174 return set_value(value);
175 }
176 return false;
177 }
178
179 // Constructor
180 SystemProperty(const char* key, const char* value, bool writeable, bool internal = false) : PathString(value) {
181 if (key == NULL) {
182 _key = NULL;
183 } else {
184 _key = AllocateHeap(strlen(key)+1, mtArguments);
185 strcpy(_key, key);
186 }
187 _next = NULL;
188 _internal = internal;
189 _writeable = writeable;
190 }
191 };
192
193
194 // For use by -agentlib, -agentpath and -Xrun
195 class AgentLibrary : public CHeapObj<mtArguments> {
196 friend class AgentLibraryList;
197 public:
198 // Is this library valid or not. Don't rely on os_lib == NULL as statically
199 // linked lib could have handle of RTLD_DEFAULT which == 0 on some platforms
200 enum AgentState {
201 agent_invalid = 0,
202 agent_valid = 1
203 };
204
205 private:
206 char* _name;
207 char* _options;
208 void* _os_lib;
209 bool _is_absolute_path;
210 bool _is_static_lib;
211 AgentState _state;
212 AgentLibrary* _next;
213
214 public:
215 // Accessors
216 const char* name() const { return _name; }
217 char* options() const { return _options; }
218 bool is_absolute_path() const { return _is_absolute_path; }
219 void* os_lib() const { return _os_lib; }
220 void set_os_lib(void* os_lib) { _os_lib = os_lib; }
221 AgentLibrary* next() const { return _next; }
222 bool is_static_lib() const { return _is_static_lib; }
223 void set_static_lib(bool is_static_lib) { _is_static_lib = is_static_lib; }
224 bool valid() { return (_state == agent_valid); }
225 void set_valid() { _state = agent_valid; }
226 void set_invalid() { _state = agent_invalid; }
227
228 // Constructor
229 AgentLibrary(const char* name, const char* options, bool is_absolute_path, void* os_lib) {
230 _name = AllocateHeap(strlen(name)+1, mtArguments);
231 strcpy(_name, name);
232 if (options == NULL) {
233 _options = NULL;
234 } else {
235 _options = AllocateHeap(strlen(options)+1, mtArguments);
236 strcpy(_options, options);
237 }
238 _is_absolute_path = is_absolute_path;
239 _os_lib = os_lib;
240 _next = NULL;
241 _state = agent_invalid;
242 _is_static_lib = false;
243 }
244 };
245
246 // maintain an order of entry list of AgentLibrary
247 class AgentLibraryList VALUE_OBJ_CLASS_SPEC {
248 private:
249 AgentLibrary* _first;
250 AgentLibrary* _last;
251 public:
252 bool is_empty() const { return _first == NULL; }
253 AgentLibrary* first() const { return _first; }
254
255 // add to the end of the list
256 void add(AgentLibrary* lib) {
257 if (is_empty()) {
258 _first = _last = lib;
259 } else {
260 _last->_next = lib;
261 _last = lib;
262 }
263 lib->_next = NULL;
264 }
265
266 // search for and remove a library known to be in the list
267 void remove(AgentLibrary* lib) {
268 AgentLibrary* curr;
269 AgentLibrary* prev = NULL;
270 for (curr = first(); curr != NULL; prev = curr, curr = curr->next()) {
271 if (curr == lib) {
272 break;
273 }
274 }
275 assert(curr != NULL, "always should be found");
276
277 if (curr != NULL) {
278 // it was found, by-pass this library
279 if (prev == NULL) {
280 _first = curr->_next;
281 } else {
282 prev->_next = curr->_next;
283 }
284 if (curr == _last) {
285 _last = prev;
286 }
287 curr->_next = NULL;
288 }
289 }
290
291 AgentLibraryList() {
292 _first = NULL;
293 _last = NULL;
294 }
295 };
296
297 // Helper class for controlling the lifetime of JavaVMInitArgs objects.
298 class ScopedVMInitArgs;
299
300 // Most logging functions require 5 tags. Some of them may be _NO_TAG.
301 typedef struct {
302 const char* alias_name;
303 LogLevelType level;
304 bool exactMatch;
305 LogTagType tag0;
306 LogTagType tag1;
307 LogTagType tag2;
308 LogTagType tag3;
309 LogTagType tag4;
310 LogTagType tag5;
311 } AliasedLoggingFlag;
312
313 class Arguments : AllStatic {
314 friend class VMStructs;
315 friend class JvmtiExport;
316 friend class CodeCacheExtensions;
317 public:
318 // Operation modi
319 enum Mode {
320 _int, // corresponds to -Xint
321 _mixed, // corresponds to -Xmixed
322 _comp // corresponds to -Xcomp
323 };
324
325 enum ArgsRange {
326 arg_unreadable = -3,
327 arg_too_small = -2,
328 arg_too_big = -1,
329 arg_in_range = 0
330 };
331
332 enum PropertyAppendable {
333 AppendProperty,
334 AddProperty
335 };
336
337 enum PropertyWriteable {
338 WriteableProperty,
339 UnwriteableProperty
340 };
341
342 enum PropertyInternal {
343 InternalProperty,
344 ExternalProperty
345 };
346
347 private:
348
349 // a pointer to the flags file name if it is specified
350 static char* _jvm_flags_file;
351 // an array containing all flags specified in the .hotspotrc file
352 static char** _jvm_flags_array;
353 static int _num_jvm_flags;
354 // an array containing all jvm arguments specified in the command line
355 static char** _jvm_args_array;
356 static int _num_jvm_args;
357 // string containing all java command (class/jarfile name and app args)
358 static char* _java_command;
359
360 // Property list
361 static SystemProperty* _system_properties;
362
363 // Quick accessor to System properties in the list:
364 static SystemProperty *_sun_boot_library_path;
365 static SystemProperty *_java_library_path;
366 static SystemProperty *_java_home;
367 static SystemProperty *_java_class_path;
368 static SystemProperty *_jdk_boot_class_path_append;
369
370 // --patch-module=module=<file>(<pathsep><file>)*
371 // Each element contains the associated module name, path
372 // string pair as specified to --patch-module.
373 static GrowableArray<ModulePatchPath*>* _patch_mod_prefix;
374
375 // The constructed value of the system class path after
376 // argument processing and JVMTI OnLoad additions via
377 // calls to AddToBootstrapClassLoaderSearch. This is the
378 // final form before ClassLoader::setup_bootstrap_search().
379 // Note: since --patch-module is a module name/path pair, the
380 // system boot class path string no longer contains the "prefix"
381 // to the boot class path base piece as it did when
382 // -Xbootclasspath/p was supported.
383 static PathString *_system_boot_class_path;
384
385 // Set if a modular java runtime image is present vs. a build with exploded modules
386 static bool _has_jimage;
387
388 // temporary: to emit warning if the default ext dirs are not empty.
389 // remove this variable when the warning is no longer needed.
390 static char* _ext_dirs;
391
392 // java.vendor.url.bug, bug reporting URL for fatal errors.
393 static const char* _java_vendor_url_bug;
394
395 // sun.java.launcher, private property to provide information about
396 // java launcher
397 static const char* _sun_java_launcher;
398
399 // sun.java.launcher.pid, private property
400 static int _sun_java_launcher_pid;
401
402 // was this VM created via the -XXaltjvm=<path> option
403 static bool _sun_java_launcher_is_altjvm;
404
405 // Option flags
406 static bool _has_profile;
407 static const char* _gc_log_filename;
408 // Value of the conservative maximum heap alignment needed
409 static size_t _conservative_max_heap_alignment;
410
411 static uintx _min_heap_size;
412
413 // -Xrun arguments
414 static AgentLibraryList _libraryList;
415 static void add_init_library(const char* name, char* options)
416 { _libraryList.add(new AgentLibrary(name, options, false, NULL)); }
417
418 // -agentlib and -agentpath arguments
419 static AgentLibraryList _agentList;
420 static void add_init_agent(const char* name, char* options, bool absolute_path)
421 { _agentList.add(new AgentLibrary(name, options, absolute_path, NULL)); }
422
423 // Late-binding agents not started via arguments
424 static void add_loaded_agent(AgentLibrary *agentLib)
425 { _agentList.add(agentLib); }
426 static void add_loaded_agent(const char* name, char* options, bool absolute_path, void* os_lib)
427 { _agentList.add(new AgentLibrary(name, options, absolute_path, os_lib)); }
428
429 // Operation modi
430 static Mode _mode;
431 static void set_mode_flags(Mode mode);
432 static bool _java_compiler;
433 static void set_java_compiler(bool arg) { _java_compiler = arg; }
434 static bool java_compiler() { return _java_compiler; }
435
436 // -Xdebug flag
437 static bool _xdebug_mode;
438 static void set_xdebug_mode(bool arg) { _xdebug_mode = arg; }
439 static bool xdebug_mode() { return _xdebug_mode; }
440
441 // Used to save default settings
442 static bool _AlwaysCompileLoopMethods;
443 static bool _UseOnStackReplacement;
444 static bool _BackgroundCompilation;
445 static bool _ClipInlining;
446 static bool _CIDynamicCompilePriority;
447 static intx _Tier3InvokeNotifyFreqLog;
448 static intx _Tier4InvocationThreshold;
449
450 // Tiered
451 static void set_tiered_flags();
452 // CMS/ParNew garbage collectors
453 static void set_parnew_gc_flags();
454 static void set_cms_and_parnew_gc_flags();
455 // UseParallel[Old]GC
456 static void set_parallel_gc_flags();
457 // Garbage-First (UseG1GC)
458 static void set_g1_gc_flags();
459 // GC ergonomics
460 static void set_conservative_max_heap_alignment();
461 static void set_use_compressed_oops();
462 static void set_use_compressed_klass_ptrs();
463 static void select_gc();
464 static void set_ergonomics_flags();
465 static void set_shared_spaces_flags();
466 // limits the given memory size by the maximum amount of memory this process is
467 // currently allowed to allocate or reserve.
468 static julong limit_by_allocatable_memory(julong size);
469 // Setup heap size
470 static void set_heap_size();
471 // Based on automatic selection criteria, should the
472 // low pause collector be used.
473 static bool should_auto_select_low_pause_collector();
474
475 // Bytecode rewriting
476 static void set_bytecode_flags();
477
478 // Invocation API hooks
479 static abort_hook_t _abort_hook;
480 static exit_hook_t _exit_hook;
481 static vfprintf_hook_t _vfprintf_hook;
482
483 // System properties
484 static bool add_property(const char* prop, PropertyWriteable writeable=WriteableProperty,
485 PropertyInternal internal=ExternalProperty);
486
487 static bool create_property(const char* prop_name, const char* prop_value, PropertyInternal internal);
488 static bool create_numbered_property(const char* prop_base_name, const char* prop_value, unsigned int count);
489
490 static int process_patch_mod_option(const char* patch_mod_tail, bool* patch_mod_javabase);
491
492 // Miscellaneous system property setter
493 static bool append_to_addmods_property(const char* module_name);
494
495 // Aggressive optimization flags.
496 static jint set_aggressive_opts_flags();
497
498 static jint set_aggressive_heap_flags();
499
500 // Argument parsing
501 static void do_pd_flag_adjustments();
502 static bool parse_argument(const char* arg, Flag::Flags origin);
503 static bool process_argument(const char* arg, jboolean ignore_unrecognized, Flag::Flags origin);
504 static void process_java_launcher_argument(const char*, void*);
505 static void process_java_compiler_argument(const char* arg);
506 static jint parse_options_environment_variable(const char* name, ScopedVMInitArgs* vm_args);
507 static jint parse_java_tool_options_environment_variable(ScopedVMInitArgs* vm_args);
508 static jint parse_java_options_environment_variable(ScopedVMInitArgs* vm_args);
509 static jint parse_vm_options_file(const char* file_name, ScopedVMInitArgs* vm_args);
510 static jint parse_options_buffer(const char* name, char* buffer, const size_t buf_len, ScopedVMInitArgs* vm_args);
511 static jint insert_vm_options_file(const JavaVMInitArgs* args,
512 const char* vm_options_file,
513 const int vm_options_file_pos,
514 ScopedVMInitArgs* vm_options_file_args,
515 ScopedVMInitArgs* args_out);
516 static bool args_contains_vm_options_file_arg(const JavaVMInitArgs* args);
517 static jint expand_vm_options_as_needed(const JavaVMInitArgs* args_in,
518 ScopedVMInitArgs* mod_args,
519 JavaVMInitArgs** args_out);
520 static jint match_special_option_and_act(const JavaVMInitArgs* args,
521 ScopedVMInitArgs* args_out);
522
523 static bool handle_deprecated_print_gc_flags();
524
525 static jint parse_vm_init_args(const JavaVMInitArgs *java_tool_options_args,
526 const JavaVMInitArgs *java_options_args,
527 const JavaVMInitArgs *cmd_line_args);
528 static jint parse_each_vm_init_arg(const JavaVMInitArgs* args, bool* patch_mod_javabase, Flag::Flags origin);
529 static jint finalize_vm_init_args();
530 static bool is_bad_option(const JavaVMOption* option, jboolean ignore, const char* option_type);
531
532 static bool is_bad_option(const JavaVMOption* option, jboolean ignore) {
533 return is_bad_option(option, ignore, NULL);
534 }
535
536 static void describe_range_error(ArgsRange errcode);
537 static ArgsRange check_memory_size(julong size, julong min_size);
538 static ArgsRange parse_memory_size(const char* s, julong* long_arg,
539 julong min_size);
540 // Parse a string for a unsigned integer. Returns true if value
541 // is an unsigned integer greater than or equal to the minimum
542 // parameter passed and returns the value in uintx_arg. Returns
543 // false otherwise, with uintx_arg undefined.
544 static bool parse_uintx(const char* value, uintx* uintx_arg,
545 uintx min_size);
546
547 // methods to build strings from individual args
548 static void build_jvm_args(const char* arg);
549 static void build_jvm_flags(const char* arg);
550 static void add_string(char*** bldarray, int* count, const char* arg);
551 static const char* build_resource_string(char** args, int count);
552
553 static bool methodExists(
554 char* className, char* methodName,
555 int classesNum, char** classes, bool* allMethods,
556 int methodsNum, char** methods, bool* allClasses
557 );
558
559 static void parseOnlyLine(
560 const char* line,
561 short* classesNum, short* classesMax, char*** classes, bool** allMethods,
562 short* methodsNum, short* methodsMax, char*** methods, bool** allClasses
563 );
564
565 // Returns true if the flag is obsolete (and not yet expired).
566 // In this case the 'version' buffer is filled in with
567 // the version number when the flag became obsolete.
568 static bool is_obsolete_flag(const char* flag_name, JDK_Version* version);
569
570 #ifndef PRODUCT
571 static const char* removed_develop_logging_flag_name(const char* name);
572 #endif // PRODUCT
573
574 // Returns 1 if the flag is deprecated (and not yet obsolete or expired).
575 // In this case the 'version' buffer is filled in with the version number when
576 // the flag became deprecated.
577 // Returns -1 if the flag is expired or obsolete.
578 // Returns 0 otherwise.
579 static int is_deprecated_flag(const char* flag_name, JDK_Version* version);
580
581 // Return the real name for the flag passed on the command line (either an alias name or "flag_name").
582 static const char* real_flag_name(const char *flag_name);
583
584 // Return the "real" name for option arg if arg is an alias, and print a warning if arg is deprecated.
585 // Return NULL if the arg has expired.
586 static const char* handle_aliases_and_deprecation(const char* arg, bool warn);
587 static bool lookup_logging_aliases(const char* arg, char* buffer);
588 static AliasedLoggingFlag catch_logging_aliases(const char* name, bool on);
589 static short CompileOnlyClassesNum;
590 static short CompileOnlyClassesMax;
591 static char** CompileOnlyClasses;
592 static bool* CompileOnlyAllMethods;
593
594 static short CompileOnlyMethodsNum;
595 static short CompileOnlyMethodsMax;
596 static char** CompileOnlyMethods;
597 static bool* CompileOnlyAllClasses;
598
599 static short InterpretOnlyClassesNum;
600 static short InterpretOnlyClassesMax;
601 static char** InterpretOnlyClasses;
602 static bool* InterpretOnlyAllMethods;
603
604 static bool CheckCompileOnly;
605
606 static char* SharedArchivePath;
607
608 public:
609 // Scale compile thresholds
610 // Returns threshold scaled with CompileThresholdScaling
611 static intx scaled_compile_threshold(intx threshold, double scale);
612 static intx scaled_compile_threshold(intx threshold) {
613 return scaled_compile_threshold(threshold, CompileThresholdScaling);
614 }
615 // Returns freq_log scaled with CompileThresholdScaling
616 static intx scaled_freq_log(intx freq_log, double scale);
617 static intx scaled_freq_log(intx freq_log) {
618 return scaled_freq_log(freq_log, CompileThresholdScaling);
619 }
620
621 // Parses the arguments, first phase
622 static jint parse(const JavaVMInitArgs* args);
623 // Apply ergonomics
624 static jint apply_ergo();
625 // Adjusts the arguments after the OS have adjusted the arguments
626 static jint adjust_after_os();
627
628 static void set_gc_specific_flags();
629 static bool gc_selected(); // whether a gc has been selected
630 static void select_gc_ergonomically();
631 #if INCLUDE_JVMCI
632 // Check consistency of jvmci vm argument settings.
633 static bool check_jvmci_args_consistency();
634 #endif
635 // Check for consistency in the selection of the garbage collector.
636 static bool check_gc_consistency(); // Check user-selected gc
637 // Check consistency or otherwise of VM argument settings
638 static bool check_vm_args_consistency();
639 // Used by os_solaris
640 static bool process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized);
641
642 static size_t conservative_max_heap_alignment() { return _conservative_max_heap_alignment; }
643 // Return the maximum size a heap with compressed oops can take
644 static size_t max_heap_for_compressed_oops();
645
646 // return a char* array containing all options
647 static char** jvm_flags_array() { return _jvm_flags_array; }
648 static char** jvm_args_array() { return _jvm_args_array; }
649 static int num_jvm_flags() { return _num_jvm_flags; }
650 static int num_jvm_args() { return _num_jvm_args; }
651 // return the arguments passed to the Java application
652 static const char* java_command() { return _java_command; }
653
654 // print jvm_flags, jvm_args and java_command
655 static void print_on(outputStream* st);
656 static void print_summary_on(outputStream* st);
657
658 // convenient methods to get and set jvm_flags_file
659 static const char* get_jvm_flags_file() { return _jvm_flags_file; }
660 static void set_jvm_flags_file(const char *value) {
661 if (_jvm_flags_file != NULL) {
662 os::free(_jvm_flags_file);
663 }
664 _jvm_flags_file = os::strdup_check_oom(value);
665 }
666 // convenient methods to obtain / print jvm_flags and jvm_args
667 static const char* jvm_flags() { return build_resource_string(_jvm_flags_array, _num_jvm_flags); }
668 static const char* jvm_args() { return build_resource_string(_jvm_args_array, _num_jvm_args); }
669 static void print_jvm_flags_on(outputStream* st);
670 static void print_jvm_args_on(outputStream* st);
671
672 // -Dkey=value flags
673 static SystemProperty* system_properties() { return _system_properties; }
674 static const char* get_property(const char* key);
675
676 // -Djava.vendor.url.bug
677 static const char* java_vendor_url_bug() { return _java_vendor_url_bug; }
678
679 // -Dsun.java.launcher
680 static const char* sun_java_launcher() { return _sun_java_launcher; }
681 // Was VM created by a Java launcher?
682 static bool created_by_java_launcher();
683 // -Dsun.java.launcher.is_altjvm
684 static bool sun_java_launcher_is_altjvm();
685 // -Dsun.java.launcher.pid
686 static int sun_java_launcher_pid() { return _sun_java_launcher_pid; }
687
688 // -Xprof
689 static bool has_profile() { return _has_profile; }
690
691 // -Xms
692 static size_t min_heap_size() { return _min_heap_size; }
693 static void set_min_heap_size(size_t v) { _min_heap_size = v; }
694
695 // -Xrun
696 static AgentLibrary* libraries() { return _libraryList.first(); }
697 static bool init_libraries_at_startup() { return !_libraryList.is_empty(); }
698 static void convert_library_to_agent(AgentLibrary* lib)
699 { _libraryList.remove(lib);
700 _agentList.add(lib); }
701
702 // -agentlib -agentpath
703 static AgentLibrary* agents() { return _agentList.first(); }
704 static bool init_agents_at_startup() { return !_agentList.is_empty(); }
705
706 // abort, exit, vfprintf hooks
707 static abort_hook_t abort_hook() { return _abort_hook; }
708 static exit_hook_t exit_hook() { return _exit_hook; }
709 static vfprintf_hook_t vfprintf_hook() { return _vfprintf_hook; }
710
711 static bool GetCheckCompileOnly () { return CheckCompileOnly; }
712
713 static const char* GetSharedArchivePath() { return SharedArchivePath; }
714
715 static bool CompileMethod(char* className, char* methodName) {
716 return
717 methodExists(
718 className, methodName,
719 CompileOnlyClassesNum, CompileOnlyClasses, CompileOnlyAllMethods,
720 CompileOnlyMethodsNum, CompileOnlyMethods, CompileOnlyAllClasses
721 );
722 }
723
724 // Java launcher properties
725 static void process_sun_java_launcher_properties(JavaVMInitArgs* args);
726
727 // System properties
728 static void init_system_properties();
729
730 // Update/Initialize System properties after JDK version number is known
731 static void init_version_specific_system_properties();
732
733 // Property List manipulation
734 static void PropertyList_add(SystemProperty *element);
735 static void PropertyList_add(SystemProperty** plist, SystemProperty *element);
736 static void PropertyList_add(SystemProperty** plist, const char* k, const char* v, bool writeable, bool internal);
737
738 static void PropertyList_unique_add(SystemProperty** plist, const char* k, const char* v,
739 PropertyAppendable append, PropertyWriteable writeable,
740 PropertyInternal internal);
741 static const char* PropertyList_get_value(SystemProperty* plist, const char* key);
742 static const char* PropertyList_get_readable_value(SystemProperty* plist, const char* key);
743 static int PropertyList_count(SystemProperty* pl);
744 static int PropertyList_readable_count(SystemProperty* pl);
745 static const char* PropertyList_get_key_at(SystemProperty* pl,int index);
746 static char* PropertyList_get_value_at(SystemProperty* pl,int index);
747
748 static bool is_internal_module_property(const char* option);
749
750 // Miscellaneous System property value getter and setters.
751 static void set_dll_dir(const char *value) { _sun_boot_library_path->set_value(value); }
752 static void set_java_home(const char *value) { _java_home->set_value(value); }
753 static void set_library_path(const char *value) { _java_library_path->set_value(value); }
754 static void set_ext_dirs(char *value) { _ext_dirs = os::strdup_check_oom(value); }
755
756 // Set up the underlying pieces of the system boot class path
757 static void add_patch_mod_prefix(const char *module_name, const char *path, bool* patch_mod_javabase);
758 static void set_sysclasspath(const char *value, bool has_jimage) {
759 // During start up, set by os::set_boot_path()
760 assert(get_sysclasspath() == NULL, "System boot class path previously set");
761 _system_boot_class_path->set_value(value);
762 _has_jimage = has_jimage;
763 }
764 static void append_sysclasspath(const char *value) {
765 _system_boot_class_path->append_value(value);
766 _jdk_boot_class_path_append->append_value(value);
767 }
768
769 static GrowableArray<ModulePatchPath*>* get_patch_mod_prefix() { return _patch_mod_prefix; }
770 static char* get_sysclasspath() { return _system_boot_class_path->value(); }
771 static char* get_jdk_boot_class_path_append() { return _jdk_boot_class_path_append->value(); }
772 static bool has_jimage() { return _has_jimage; }
773
774 static char* get_java_home() { return _java_home->value(); }
775 static char* get_dll_dir() { return _sun_boot_library_path->value(); }
776 static char* get_ext_dirs() { return _ext_dirs; }
777 static char* get_appclasspath() { return _java_class_path->value(); }
778 static void fix_appclasspath();
779
780
781 // Operation modi
782 static Mode mode() { return _mode; }
783 static bool is_interpreter_only() { return mode() == _int; }
784
785
786 // Utility: copies src into buf, replacing "%%" with "%" and "%p" with pid.
787 static bool copy_expand_pid(const char* src, size_t srclen, char* buf, size_t buflen);
788
789 static void check_unsupported_dumping_properties() NOT_CDS_RETURN;
790
791 static bool atojulong(const char *s, julong* result);
792 };
793
794 // Disable options not supported in this release, with a warning if they
795 // were explicitly requested on the command-line
796 #define UNSUPPORTED_OPTION(opt) \
797 do { \
798 if (opt) { \
799 if (FLAG_IS_CMDLINE(opt)) { \
800 warning("-XX:+" #opt " not supported in this VM"); \
801 } \
802 FLAG_SET_DEFAULT(opt, false); \
803 } \
804 } while(0)
805
806 #endif // SHARE_VM_RUNTIME_ARGUMENTS_HPP