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 // 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 enum PropertyAppendable {
329 AppendProperty,
330 AddProperty
331 };
332
333 enum PropertyWriteable {
334 WriteableProperty,
335 UnwriteableProperty
336 };
337
338 enum PropertyInternal {
339 InternalProperty,
340 ExternalProperty
341 };
342
343 private:
344
345 // a pointer to the flags file name if it is specified
346 static char* _jvm_flags_file;
347 // an array containing all flags specified in the .hotspotrc file
348 static char** _jvm_flags_array;
349 static int _num_jvm_flags;
350 // an array containing all jvm arguments specified in the command line
351 static char** _jvm_args_array;
352 static int _num_jvm_args;
353 // string containing all java command (class/jarfile name and app args)
354 static char* _java_command;
355
356 // Property list
357 static SystemProperty* _system_properties;
358
359 // Quick accessor to System properties in the list:
360 static SystemProperty *_sun_boot_library_path;
361 static SystemProperty *_java_library_path;
362 static SystemProperty *_java_home;
363 static SystemProperty *_java_class_path;
364 static SystemProperty *_jdk_boot_class_path_append;
365
366 // --patch-module=module=<file>(<pathsep><file>)*
367 // Each element contains the associated module name, path
368 // string pair as specified to --patch-module.
369 static GrowableArray<ModulePatchPath*>* _patch_mod_prefix;
370
371 // The constructed value of the system class path after
372 // argument processing and JVMTI OnLoad additions via
373 // calls to AddToBootstrapClassLoaderSearch. This is the
374 // final form before ClassLoader::setup_bootstrap_search().
375 // Note: since --patch-module is a module name/path pair, the
376 // system boot class path string no longer contains the "prefix"
377 // to the boot class path base piece as it did when
378 // -Xbootclasspath/p was supported.
379 static PathString *_system_boot_class_path;
380
381 // temporary: to emit warning if the default ext dirs are not empty.
382 // remove this variable when the warning is no longer needed.
383 static char* _ext_dirs;
384
385 // java.vendor.url.bug, bug reporting URL for fatal errors.
386 static const char* _java_vendor_url_bug;
387
388 // sun.java.launcher, private property to provide information about
389 // java launcher
390 static const char* _sun_java_launcher;
391
392 // sun.java.launcher.pid, private property
393 static int _sun_java_launcher_pid;
394
395 // was this VM created via the -XXaltjvm=<path> option
396 static bool _sun_java_launcher_is_altjvm;
397
398 // Option flags
399 static bool _has_profile;
400 static const char* _gc_log_filename;
401 // Value of the conservative maximum heap alignment needed
402 static size_t _conservative_max_heap_alignment;
403
404 static uintx _min_heap_size;
405
406 // -Xrun arguments
407 static AgentLibraryList _libraryList;
408 static void add_init_library(const char* name, char* options)
409 { _libraryList.add(new AgentLibrary(name, options, false, NULL)); }
410
411 // -agentlib and -agentpath arguments
412 static AgentLibraryList _agentList;
413 static void add_init_agent(const char* name, char* options, bool absolute_path)
414 { _agentList.add(new AgentLibrary(name, options, absolute_path, NULL)); }
415
416 // Late-binding agents not started via arguments
417 static void add_loaded_agent(AgentLibrary *agentLib)
418 { _agentList.add(agentLib); }
419 static void add_loaded_agent(const char* name, char* options, bool absolute_path, void* os_lib)
420 { _agentList.add(new AgentLibrary(name, options, absolute_path, os_lib)); }
421
422 // Operation modi
423 static Mode _mode;
424 static void set_mode_flags(Mode mode);
425 static bool _java_compiler;
426 static void set_java_compiler(bool arg) { _java_compiler = arg; }
427 static bool java_compiler() { return _java_compiler; }
428
429 // Capture the index location of -Xbootclasspath\a within sysclasspath.
430 // Used when setting up the bootstrap search path in order to
431 // mark the boot loader's append path observability boundary.
432 static int _bootclassloader_append_index;
433
434 // -Xdebug flag
435 static bool _xdebug_mode;
436 static void set_xdebug_mode(bool arg) { _xdebug_mode = arg; }
437 static bool xdebug_mode() { return _xdebug_mode; }
438
439 // Used to save default settings
440 static bool _AlwaysCompileLoopMethods;
441 static bool _UseOnStackReplacement;
442 static bool _BackgroundCompilation;
443 static bool _ClipInlining;
444 static bool _CIDynamicCompilePriority;
445 static intx _Tier3InvokeNotifyFreqLog;
446 static intx _Tier4InvocationThreshold;
447
448 // Tiered
449 static void set_tiered_flags();
450 // CMS/ParNew garbage collectors
451 static void set_parnew_gc_flags();
452 static void set_cms_and_parnew_gc_flags();
453 // UseParallel[Old]GC
454 static void set_parallel_gc_flags();
455 // Garbage-First (UseG1GC)
456 static void set_g1_gc_flags();
457 // GC ergonomics
458 static void set_conservative_max_heap_alignment();
459 static void set_use_compressed_oops();
460 static void set_use_compressed_klass_ptrs();
461 static void select_gc();
462 static void set_ergonomics_flags();
463 static void set_shared_spaces_flags();
464 // limits the given memory size by the maximum amount of memory this process is
465 // currently allowed to allocate or reserve.
466 static julong limit_by_allocatable_memory(julong size);
467 // Setup heap size
468 static void set_heap_size();
469 // Based on automatic selection criteria, should the
470 // low pause collector be used.
471 static bool should_auto_select_low_pause_collector();
472
473 // Bytecode rewriting
474 static void set_bytecode_flags();
475
476 // Invocation API hooks
477 static abort_hook_t _abort_hook;
478 static exit_hook_t _exit_hook;
479 static vfprintf_hook_t _vfprintf_hook;
480
481 // System properties
482 static bool add_property(const char* prop, PropertyWriteable writeable=WriteableProperty,
483 PropertyInternal internal=ExternalProperty);
484
485 static bool create_property(const char* prop_name, const char* prop_value, PropertyInternal internal);
486 static bool create_numbered_property(const char* prop_base_name, const char* prop_value, unsigned int count);
487
488 static int process_patch_mod_option(const char* patch_mod_tail, bool* patch_mod_javabase);
489
490 // Miscellaneous system property setter
491 static bool append_to_addmods_property(const char* module_name);
492
493 // Aggressive optimization flags.
494 static jint set_aggressive_opts_flags();
495
496 static jint set_aggressive_heap_flags();
497
498 // Argument parsing
499 static void do_pd_flag_adjustments();
500 static bool parse_argument(const char* arg, Flag::Flags origin);
501 static bool process_argument(const char* arg, jboolean ignore_unrecognized, Flag::Flags origin);
502 static void process_java_launcher_argument(const char*, void*);
503 static void process_java_compiler_argument(const char* arg);
504 static jint parse_options_environment_variable(const char* name, ScopedVMInitArgs* vm_args);
505 static jint parse_java_tool_options_environment_variable(ScopedVMInitArgs* vm_args);
506 static jint parse_java_options_environment_variable(ScopedVMInitArgs* vm_args);
507 static jint parse_vm_options_file(const char* file_name, ScopedVMInitArgs* vm_args);
508 static jint parse_options_buffer(const char* name, char* buffer, const size_t buf_len, ScopedVMInitArgs* vm_args);
509 static jint insert_vm_options_file(const JavaVMInitArgs* args,
510 const char* vm_options_file,
511 const int vm_options_file_pos,
512 ScopedVMInitArgs* vm_options_file_args,
513 ScopedVMInitArgs* args_out);
514 static bool args_contains_vm_options_file_arg(const JavaVMInitArgs* args);
515 static jint expand_vm_options_as_needed(const JavaVMInitArgs* args_in,
516 ScopedVMInitArgs* mod_args,
517 JavaVMInitArgs** args_out);
518 static jint match_special_option_and_act(const JavaVMInitArgs* args,
519 ScopedVMInitArgs* args_out);
520
521 static bool handle_deprecated_print_gc_flags();
522
523 static jint parse_vm_init_args(const JavaVMInitArgs *java_tool_options_args,
524 const JavaVMInitArgs *java_options_args,
525 const JavaVMInitArgs *cmd_line_args);
526 static jint parse_each_vm_init_arg(const JavaVMInitArgs* args, bool* patch_mod_javabase, Flag::Flags origin);
527 static jint finalize_vm_init_args();
528 static bool is_bad_option(const JavaVMOption* option, jboolean ignore, const char* option_type);
529
530 static bool is_bad_option(const JavaVMOption* option, jboolean ignore) {
531 return is_bad_option(option, ignore, NULL);
532 }
533
534 static void describe_range_error(ArgsRange errcode);
535 static ArgsRange check_memory_size(julong size, julong min_size);
536 static ArgsRange parse_memory_size(const char* s, julong* long_arg,
537 julong min_size);
538 // Parse a string for a unsigned integer. Returns true if value
539 // is an unsigned integer greater than or equal to the minimum
540 // parameter passed and returns the value in uintx_arg. Returns
541 // false otherwise, with uintx_arg undefined.
542 static bool parse_uintx(const char* value, uintx* uintx_arg,
543 uintx min_size);
544
545 // methods to build strings from individual args
546 static void build_jvm_args(const char* arg);
547 static void build_jvm_flags(const char* arg);
548 static void add_string(char*** bldarray, int* count, const char* arg);
549 static const char* build_resource_string(char** args, int count);
550
551 static bool methodExists(
552 char* className, char* methodName,
553 int classesNum, char** classes, bool* allMethods,
554 int methodsNum, char** methods, bool* allClasses
555 );
556
557 static void parseOnlyLine(
558 const char* line,
559 short* classesNum, short* classesMax, char*** classes, bool** allMethods,
560 short* methodsNum, short* methodsMax, char*** methods, bool** allClasses
561 );
562
563 // Returns true if the flag is obsolete (and not yet expired).
564 // In this case the 'version' buffer is filled in with
565 // the version number when the flag became obsolete.
566 static bool is_obsolete_flag(const char* flag_name, JDK_Version* version);
567
568 #ifndef PRODUCT
569 static const char* removed_develop_logging_flag_name(const char* name);
570 #endif // PRODUCT
571
572 // Returns 1 if the flag is deprecated (and not yet obsolete or expired).
573 // In this case the 'version' buffer is filled in with the version number when
574 // the flag became deprecated.
575 // Returns -1 if the flag is expired or obsolete.
576 // Returns 0 otherwise.
577 static int is_deprecated_flag(const char* flag_name, JDK_Version* version);
578
579 // Return the real name for the flag passed on the command line (either an alias name or "flag_name").
580 static const char* real_flag_name(const char *flag_name);
581
582 // Return the "real" name for option arg if arg is an alias, and print a warning if arg is deprecated.
583 // Return NULL if the arg has expired.
584 static const char* handle_aliases_and_deprecation(const char* arg, bool warn);
585 static bool lookup_logging_aliases(const char* arg, char* buffer);
586 static AliasedLoggingFlag catch_logging_aliases(const char* name, bool on);
587 static short CompileOnlyClassesNum;
588 static short CompileOnlyClassesMax;
589 static char** CompileOnlyClasses;
590 static bool* CompileOnlyAllMethods;
591
592 static short CompileOnlyMethodsNum;
593 static short CompileOnlyMethodsMax;
594 static char** CompileOnlyMethods;
595 static bool* CompileOnlyAllClasses;
596
597 static short InterpretOnlyClassesNum;
598 static short InterpretOnlyClassesMax;
599 static char** InterpretOnlyClasses;
600 static bool* InterpretOnlyAllMethods;
601
602 static bool CheckCompileOnly;
603
604 static char* SharedArchivePath;
605
606 public:
607 // Scale compile thresholds
608 // Returns threshold scaled with CompileThresholdScaling
609 static intx scaled_compile_threshold(intx threshold, double scale);
610 static intx scaled_compile_threshold(intx threshold) {
611 return scaled_compile_threshold(threshold, CompileThresholdScaling);
612 }
613 // Returns freq_log scaled with CompileThresholdScaling
614 static intx scaled_freq_log(intx freq_log, double scale);
615 static intx scaled_freq_log(intx freq_log) {
616 return scaled_freq_log(freq_log, CompileThresholdScaling);
617 }
618
619 // Parses the arguments, first phase
620 static jint parse(const JavaVMInitArgs* args);
621 // Apply ergonomics
622 static jint apply_ergo();
623 // Adjusts the arguments after the OS have adjusted the arguments
624 static jint adjust_after_os();
625
626 static void set_gc_specific_flags();
627 static bool gc_selected(); // whether a gc has been selected
628 static void select_gc_ergonomically();
629 #if INCLUDE_JVMCI
630 // Check consistency of jvmci vm argument settings.
631 static bool check_jvmci_args_consistency();
632 #endif
633 // Check for consistency in the selection of the garbage collector.
634 static bool check_gc_consistency(); // Check user-selected gc
635 // Check consistency or otherwise of VM argument settings
636 static bool check_vm_args_consistency();
637 // Used by os_solaris
638 static bool process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized);
639
640 static size_t conservative_max_heap_alignment() { return _conservative_max_heap_alignment; }
641 // Return the maximum size a heap with compressed oops can take
642 static size_t max_heap_for_compressed_oops();
643
644 // return a char* array containing all options
645 static char** jvm_flags_array() { return _jvm_flags_array; }
646 static char** jvm_args_array() { return _jvm_args_array; }
647 static int num_jvm_flags() { return _num_jvm_flags; }
648 static int num_jvm_args() { return _num_jvm_args; }
649 // return the arguments passed to the Java application
650 static const char* java_command() { return _java_command; }
651
652 // print jvm_flags, jvm_args and java_command
653 static void print_on(outputStream* st);
654 static void print_summary_on(outputStream* st);
655
656 // convenient methods to get and set jvm_flags_file
657 static const char* get_jvm_flags_file() { return _jvm_flags_file; }
658 static void set_jvm_flags_file(const char *value) {
659 if (_jvm_flags_file != NULL) {
660 os::free(_jvm_flags_file);
661 }
662 _jvm_flags_file = os::strdup_check_oom(value);
663 }
664 // convenient methods to obtain / print jvm_flags and jvm_args
665 static const char* jvm_flags() { return build_resource_string(_jvm_flags_array, _num_jvm_flags); }
666 static const char* jvm_args() { return build_resource_string(_jvm_args_array, _num_jvm_args); }
667 static void print_jvm_flags_on(outputStream* st);
668 static void print_jvm_args_on(outputStream* st);
669
670 // -Dkey=value flags
671 static SystemProperty* system_properties() { return _system_properties; }
672 static const char* get_property(const char* key);
673
674 // -Djava.vendor.url.bug
675 static const char* java_vendor_url_bug() { return _java_vendor_url_bug; }
676
677 // -Dsun.java.launcher
678 static const char* sun_java_launcher() { return _sun_java_launcher; }
679 // Was VM created by a Java launcher?
680 static bool created_by_java_launcher();
681 // -Dsun.java.launcher.is_altjvm
682 static bool sun_java_launcher_is_altjvm();
683 // -Dsun.java.launcher.pid
684 static int sun_java_launcher_pid() { return _sun_java_launcher_pid; }
685
686 // -Xprof
687 static bool has_profile() { return _has_profile; }
688
689 // -Xms
690 static size_t min_heap_size() { return _min_heap_size; }
691 static void set_min_heap_size(size_t v) { _min_heap_size = v; }
692
693 // -Xbootclasspath/a
694 static int bootclassloader_append_index() {
695 return _bootclassloader_append_index;
696 }
697 static void set_bootclassloader_append_index(int value) {
698 // Set only if the index has not been set yet
699 if (_bootclassloader_append_index == -1) {
700 _bootclassloader_append_index = value;
701 }
702 }
703
704 // -Xrun
705 static AgentLibrary* libraries() { return _libraryList.first(); }
706 static bool init_libraries_at_startup() { return !_libraryList.is_empty(); }
707 static void convert_library_to_agent(AgentLibrary* lib)
708 { _libraryList.remove(lib);
709 _agentList.add(lib); }
710
711 // -agentlib -agentpath
712 static AgentLibrary* agents() { return _agentList.first(); }
713 static bool init_agents_at_startup() { return !_agentList.is_empty(); }
714
715 // abort, exit, vfprintf hooks
716 static abort_hook_t abort_hook() { return _abort_hook; }
717 static exit_hook_t exit_hook() { return _exit_hook; }
718 static vfprintf_hook_t vfprintf_hook() { return _vfprintf_hook; }
719
720 static bool GetCheckCompileOnly () { return CheckCompileOnly; }
721
722 static const char* GetSharedArchivePath() { return SharedArchivePath; }
723
724 static bool CompileMethod(char* className, char* methodName) {
725 return
726 methodExists(
727 className, methodName,
728 CompileOnlyClassesNum, CompileOnlyClasses, CompileOnlyAllMethods,
729 CompileOnlyMethodsNum, CompileOnlyMethods, CompileOnlyAllClasses
730 );
731 }
732
733 // Java launcher properties
734 static void process_sun_java_launcher_properties(JavaVMInitArgs* args);
735
736 // System properties
737 static void init_system_properties();
738
739 // Update/Initialize System properties after JDK version number is known
740 static void init_version_specific_system_properties();
741
742 // Property List manipulation
743 static void PropertyList_add(SystemProperty *element);
744 static void PropertyList_add(SystemProperty** plist, SystemProperty *element);
745 static void PropertyList_add(SystemProperty** plist, const char* k, const char* v, bool writeable, bool internal);
746
747 static void PropertyList_unique_add(SystemProperty** plist, const char* k, const char* v,
748 PropertyAppendable append, PropertyWriteable writeable,
749 PropertyInternal internal);
750 static const char* PropertyList_get_value(SystemProperty* plist, const char* key);
751 static int PropertyList_count(SystemProperty* pl);
752 static const char* PropertyList_get_key_at(SystemProperty* pl,int index);
753 static char* PropertyList_get_value_at(SystemProperty* pl,int index);
754
755 static bool is_internal_module_property(const char* option);
756
757 // Miscellaneous System property value getter and setters.
758 static void set_dll_dir(const char *value) { _sun_boot_library_path->set_value(value); }
759 static void set_java_home(const char *value) { _java_home->set_value(value); }
760 static void set_library_path(const char *value) { _java_library_path->set_value(value); }
761 static void set_ext_dirs(char *value) { _ext_dirs = os::strdup_check_oom(value); }
762
763 // Set up the underlying pieces of the system boot class path
764 static void add_patch_mod_prefix(const char *module_name, const char *path, bool* patch_mod_javabase);
765 static void set_sysclasspath(const char *value) {
766 _system_boot_class_path->set_value(value);
767 set_jdkbootclasspath_append();
768 }
769 static void append_sysclasspath(const char *value) {
770 _system_boot_class_path->append_value(value);
771 set_jdkbootclasspath_append();
772 }
773 static void set_jdkbootclasspath_append();
774
775 static GrowableArray<ModulePatchPath*>* get_patch_mod_prefix() { return _patch_mod_prefix; }
776 static char* get_sysclasspath() { return _system_boot_class_path->value(); }
777 static char* get_jdk_boot_class_path_append() { return _jdk_boot_class_path_append->value(); }
778
779 static char* get_java_home() { return _java_home->value(); }
780 static char* get_dll_dir() { return _sun_boot_library_path->value(); }
781 static char* get_ext_dirs() { return _ext_dirs; }
782 static char* get_appclasspath() { return _java_class_path->value(); }
783 static void fix_appclasspath();
784
785
786 // Operation modi
787 static Mode mode() { return _mode; }
788 static bool is_interpreter_only() { return mode() == _int; }
789
790
791 // Utility: copies src into buf, replacing "%%" with "%" and "%p" with pid.
792 static bool copy_expand_pid(const char* src, size_t srclen, char* buf, size_t buflen);
793
794 static void check_unsupported_dumping_properties() NOT_CDS_RETURN;
795
796 static bool atojulong(const char *s, julong* result);
797 };
798
799 // Disable options not supported in this release, with a warning if they
800 // were explicitly requested on the command-line
801 #define UNSUPPORTED_OPTION(opt) \
802 do { \
803 if (opt) { \
804 if (FLAG_IS_CMDLINE(opt)) { \
805 warning("-XX:+" #opt " not supported in this VM"); \
806 } \
807 FLAG_SET_DEFAULT(opt, false); \
808 } \
809 } while(0)
810
811 #endif // SHARE_VM_RUNTIME_ARGUMENTS_HPP