1 /*
2 * Copyright (c) 1997, 2017, 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 // Obsolete or deprecated -XX flag.
45 struct SpecialFlag {
46 const char* name;
47 JDK_Version deprecated_in; // When the deprecation warning started (or "undefined").
48 JDK_Version obsolete_in; // When the obsolete warning started (or "undefined").
49 JDK_Version expired_in; // When the option expires (or "undefined").
50 };
51
52 // PathString is used as:
53 // - the underlying value for a SystemProperty
54 // - the path portion of an --patch-module module/path pair
55 // - the string that represents the system boot class path, Arguments::_system_boot_class_path.
56 class PathString : public CHeapObj<mtArguments> {
57 protected:
58 char* _value;
59 public:
60 char* value() const { return _value; }
61
62 bool set_value(const char *value) {
63 if (_value != NULL) {
64 FreeHeap(_value);
65 }
66 _value = AllocateHeap(strlen(value)+1, mtArguments);
67 assert(_value != NULL, "Unable to allocate space for new path value");
68 if (_value != NULL) {
69 strcpy(_value, value);
70 } else {
71 // not able to allocate
72 return false;
73 }
74 return true;
75 }
76
77 void append_value(const char *value) {
78 char *sp;
79 size_t len = 0;
80 if (value != NULL) {
81 len = strlen(value);
82 if (_value != NULL) {
83 len += strlen(_value);
84 }
85 sp = AllocateHeap(len+2, mtArguments);
86 assert(sp != NULL, "Unable to allocate space for new append path value");
87 if (sp != NULL) {
88 if (_value != NULL) {
89 strcpy(sp, _value);
90 strcat(sp, os::path_separator());
91 strcat(sp, value);
92 FreeHeap(_value);
93 } else {
94 strcpy(sp, value);
95 }
96 _value = sp;
97 }
98 }
99 }
100
101 PathString(const char* value) {
102 if (value == NULL) {
103 _value = NULL;
104 } else {
105 _value = AllocateHeap(strlen(value)+1, mtArguments);
106 strcpy(_value, value);
107 }
108 }
109
110 ~PathString() {
111 if (_value != NULL) {
112 FreeHeap(_value);
113 _value = NULL;
114 }
115 }
116 };
117
118 // ModulePatchPath records the module/path pair as specified to --patch-module.
119 class ModulePatchPath : public CHeapObj<mtInternal> {
120 private:
121 char* _module_name;
122 PathString* _path;
123 public:
124 ModulePatchPath(const char* module_name, const char* path) {
125 assert(module_name != NULL && path != NULL, "Invalid module name or path value");
126 size_t len = strlen(module_name) + 1;
127 _module_name = AllocateHeap(len, mtInternal);
128 strncpy(_module_name, module_name, len); // copy the trailing null
129 _path = new PathString(path);
130 }
131
132 ~ModulePatchPath() {
133 if (_module_name != NULL) {
134 FreeHeap(_module_name);
135 _module_name = NULL;
136 }
137 if (_path != NULL) {
138 delete _path;
139 _path = NULL;
140 }
141 }
142
143 inline void set_path(const char* path) { _path->set_value(path); }
144 inline const char* module_name() const { return _module_name; }
145 inline char* path_string() const { return _path->value(); }
146 };
147
148 // Element describing System and User (-Dkey=value flags) defined property.
149 //
150 // An internal SystemProperty is one that has been removed in
151 // jdk.internal.VM.saveAndRemoveProperties, like jdk.boot.class.path.append.
152 //
153 class SystemProperty : public PathString {
154 private:
155 char* _key;
156 SystemProperty* _next;
157 bool _internal;
158 bool _writeable;
159 bool writeable() { return _writeable; }
160
161 public:
162 // Accessors
163 char* value() const { return PathString::value(); }
164 const char* key() const { return _key; }
165 bool internal() const { return _internal; }
166 SystemProperty* next() const { return _next; }
167 void set_next(SystemProperty* next) { _next = next; }
168
169 bool is_readable() const {
170 return !_internal || strcmp(_key, "jdk.boot.class.path.append") == 0;
171 }
172
173 // A system property should only have its value set
174 // via an external interface if it is a writeable property.
175 // The internal, non-writeable property jdk.boot.class.path.append
176 // is the only exception to this rule. It can be set externally
177 // via -Xbootclasspath/a or JVMTI OnLoad phase call to AddToBootstrapClassLoaderSearch.
178 // In those cases for jdk.boot.class.path.append, the base class
179 // set_value and append_value methods are called directly.
180 bool set_writeable_value(const char *value) {
181 if (writeable()) {
182 return set_value(value);
183 }
184 return false;
185 }
186
187 // Constructor
188 SystemProperty(const char* key, const char* value, bool writeable, bool internal = false) : PathString(value) {
189 if (key == NULL) {
190 _key = NULL;
191 } else {
192 _key = AllocateHeap(strlen(key)+1, mtArguments);
193 strcpy(_key, key);
194 }
195 _next = NULL;
196 _internal = internal;
197 _writeable = writeable;
198 }
199 };
200
201
202 // For use by -agentlib, -agentpath and -Xrun
203 class AgentLibrary : public CHeapObj<mtArguments> {
204 friend class AgentLibraryList;
205 public:
206 // Is this library valid or not. Don't rely on os_lib == NULL as statically
207 // linked lib could have handle of RTLD_DEFAULT which == 0 on some platforms
208 enum AgentState {
209 agent_invalid = 0,
210 agent_valid = 1
211 };
212
213 private:
214 char* _name;
215 char* _options;
216 void* _os_lib;
217 bool _is_absolute_path;
218 bool _is_static_lib;
219 AgentState _state;
220 AgentLibrary* _next;
221
222 public:
223 // Accessors
224 const char* name() const { return _name; }
225 char* options() const { return _options; }
226 bool is_absolute_path() const { return _is_absolute_path; }
227 void* os_lib() const { return _os_lib; }
228 void set_os_lib(void* os_lib) { _os_lib = os_lib; }
229 AgentLibrary* next() const { return _next; }
230 bool is_static_lib() const { return _is_static_lib; }
231 void set_static_lib(bool is_static_lib) { _is_static_lib = is_static_lib; }
232 bool valid() { return (_state == agent_valid); }
233 void set_valid() { _state = agent_valid; }
234 void set_invalid() { _state = agent_invalid; }
235
236 // Constructor
237 AgentLibrary(const char* name, const char* options, bool is_absolute_path, void* os_lib) {
238 _name = AllocateHeap(strlen(name)+1, mtArguments);
239 strcpy(_name, name);
240 if (options == NULL) {
241 _options = NULL;
242 } else {
243 _options = AllocateHeap(strlen(options)+1, mtArguments);
244 strcpy(_options, options);
245 }
246 _is_absolute_path = is_absolute_path;
247 _os_lib = os_lib;
248 _next = NULL;
249 _state = agent_invalid;
250 _is_static_lib = false;
251 }
252 };
253
254 // maintain an order of entry list of AgentLibrary
255 class AgentLibraryList VALUE_OBJ_CLASS_SPEC {
256 private:
257 AgentLibrary* _first;
258 AgentLibrary* _last;
259 public:
260 bool is_empty() const { return _first == NULL; }
261 AgentLibrary* first() const { return _first; }
262
263 // add to the end of the list
264 void add(AgentLibrary* lib) {
265 if (is_empty()) {
266 _first = _last = lib;
267 } else {
268 _last->_next = lib;
269 _last = lib;
270 }
271 lib->_next = NULL;
272 }
273
274 // search for and remove a library known to be in the list
275 void remove(AgentLibrary* lib) {
276 AgentLibrary* curr;
277 AgentLibrary* prev = NULL;
278 for (curr = first(); curr != NULL; prev = curr, curr = curr->next()) {
279 if (curr == lib) {
280 break;
281 }
282 }
283 assert(curr != NULL, "always should be found");
284
285 if (curr != NULL) {
286 // it was found, by-pass this library
287 if (prev == NULL) {
288 _first = curr->_next;
289 } else {
290 prev->_next = curr->_next;
291 }
292 if (curr == _last) {
293 _last = prev;
294 }
295 curr->_next = NULL;
296 }
297 }
298
299 AgentLibraryList() {
300 _first = NULL;
301 _last = NULL;
302 }
303 };
304
305 // Helper class for controlling the lifetime of JavaVMInitArgs objects.
306 class ScopedVMInitArgs;
307
308 // Most logging functions require 5 tags. Some of them may be _NO_TAG.
309 typedef struct {
310 const char* alias_name;
311 LogLevelType level;
312 bool exactMatch;
313 LogTagType tag0;
314 LogTagType tag1;
315 LogTagType tag2;
316 LogTagType tag3;
317 LogTagType tag4;
318 LogTagType tag5;
319 } AliasedLoggingFlag;
320
321 class Arguments : AllStatic {
322 friend class VMStructs;
323 friend class JvmtiExport;
324 friend class CodeCacheExtensions;
325 friend class ArgumentsTest;
326 public:
327 // Operation modi
328 enum Mode {
329 _int, // corresponds to -Xint
330 _mixed, // corresponds to -Xmixed
331 _comp // corresponds to -Xcomp
332 };
333
334 enum ArgsRange {
335 arg_unreadable = -3,
336 arg_too_small = -2,
337 arg_too_big = -1,
338 arg_in_range = 0
339 };
340
341 enum PropertyAppendable {
342 AppendProperty,
343 AddProperty
344 };
345
346 enum PropertyWriteable {
347 WriteableProperty,
348 UnwriteableProperty
349 };
350
351 enum PropertyInternal {
352 InternalProperty,
353 ExternalProperty
354 };
355
356 private:
357
358 // a pointer to the flags file name if it is specified
359 static char* _jvm_flags_file;
360 // an array containing all flags specified in the .hotspotrc file
361 static char** _jvm_flags_array;
362 static int _num_jvm_flags;
363 // an array containing all jvm arguments specified in the command line
364 static char** _jvm_args_array;
365 static int _num_jvm_args;
366 // string containing all java command (class/jarfile name and app args)
367 static char* _java_command;
368
369 // Property list
370 static SystemProperty* _system_properties;
371
372 // Quick accessor to System properties in the list:
373 static SystemProperty *_sun_boot_library_path;
374 static SystemProperty *_java_library_path;
375 static SystemProperty *_java_home;
376 static SystemProperty *_java_class_path;
377 static SystemProperty *_jdk_boot_class_path_append;
378
379 // --patch-module=module=<file>(<pathsep><file>)*
380 // Each element contains the associated module name, path
381 // string pair as specified to --patch-module.
382 static GrowableArray<ModulePatchPath*>* _patch_mod_prefix;
383
384 // The constructed value of the system class path after
385 // argument processing and JVMTI OnLoad additions via
386 // calls to AddToBootstrapClassLoaderSearch. This is the
387 // final form before ClassLoader::setup_bootstrap_search().
388 // Note: since --patch-module is a module name/path pair, the
389 // system boot class path string no longer contains the "prefix"
390 // to the boot class path base piece as it did when
391 // -Xbootclasspath/p was supported.
392 static PathString *_system_boot_class_path;
393
394 // Set if a modular java runtime image is present vs. a build with exploded modules
395 static bool _has_jimage;
396
397 // temporary: to emit warning if the default ext dirs are not empty.
398 // remove this variable when the warning is no longer needed.
399 static char* _ext_dirs;
400
401 // java.vendor.url.bug, bug reporting URL for fatal errors.
402 static const char* _java_vendor_url_bug;
403
404 // sun.java.launcher, private property to provide information about
405 // java launcher
406 static const char* _sun_java_launcher;
407
408 // sun.java.launcher.pid, private property
409 static int _sun_java_launcher_pid;
410
411 // was this VM created via the -XXaltjvm=<path> option
412 static bool _sun_java_launcher_is_altjvm;
413
414 // Option flags
415 static const char* _gc_log_filename;
416 // Value of the conservative maximum heap alignment needed
417 static size_t _conservative_max_heap_alignment;
418
419 static uintx _min_heap_size;
420
421 // -Xrun arguments
422 static AgentLibraryList _libraryList;
423 static void add_init_library(const char* name, char* options)
424 { _libraryList.add(new AgentLibrary(name, options, false, NULL)); }
425
426 // -agentlib and -agentpath arguments
427 static AgentLibraryList _agentList;
428 static void add_init_agent(const char* name, char* options, bool absolute_path)
429 { _agentList.add(new AgentLibrary(name, options, absolute_path, NULL)); }
430
431 // Late-binding agents not started via arguments
432 static void add_loaded_agent(AgentLibrary *agentLib)
433 { _agentList.add(agentLib); }
434 static void add_loaded_agent(const char* name, char* options, bool absolute_path, void* os_lib)
435 { _agentList.add(new AgentLibrary(name, options, absolute_path, os_lib)); }
436
437 // Operation modi
438 static Mode _mode;
439 static void set_mode_flags(Mode mode);
440 static bool _java_compiler;
441 static void set_java_compiler(bool arg) { _java_compiler = arg; }
442 static bool java_compiler() { return _java_compiler; }
443
444 // -Xdebug flag
445 static bool _xdebug_mode;
446 static void set_xdebug_mode(bool arg) { _xdebug_mode = arg; }
447 static bool xdebug_mode() { return _xdebug_mode; }
448
449 // Used to save default settings
450 static bool _AlwaysCompileLoopMethods;
451 static bool _UseOnStackReplacement;
452 static bool _BackgroundCompilation;
453 static bool _ClipInlining;
454 static bool _CIDynamicCompilePriority;
455 static intx _Tier3InvokeNotifyFreqLog;
456 static intx _Tier4InvocationThreshold;
457
458 // Compilation mode.
459 static bool compilation_mode_selected();
460 static void select_compilation_mode_ergonomically();
461
462 // Tiered
463 static void set_tiered_flags();
464 // CMS/ParNew garbage collectors
465 static void set_parnew_gc_flags();
466 static void set_cms_and_parnew_gc_flags();
467 // UseParallel[Old]GC
468 static void set_parallel_gc_flags();
469 // Garbage-First (UseG1GC)
470 static void set_g1_gc_flags();
471 // GC ergonomics
472 static void set_conservative_max_heap_alignment();
473 static void set_use_compressed_oops();
474 static void set_use_compressed_klass_ptrs();
475 static jint set_ergonomics_flags();
476 static void set_shared_spaces_flags();
477 // limits the given memory size by the maximum amount of memory this process is
478 // currently allowed to allocate or reserve.
479 static julong limit_by_allocatable_memory(julong size);
480 // Setup heap size
481 static void set_heap_size();
482
483 // Bytecode rewriting
484 static void set_bytecode_flags();
485
486 // Invocation API hooks
487 static abort_hook_t _abort_hook;
488 static exit_hook_t _exit_hook;
489 static vfprintf_hook_t _vfprintf_hook;
490
491 // System properties
492 static bool add_property(const char* prop, PropertyWriteable writeable=WriteableProperty,
493 PropertyInternal internal=ExternalProperty);
494
495 static bool create_property(const char* prop_name, const char* prop_value, PropertyInternal internal);
496 static bool create_numbered_property(const char* prop_base_name, const char* prop_value, unsigned int count);
497
498 static int process_patch_mod_option(const char* patch_mod_tail, bool* patch_mod_javabase);
499
500 // Aggressive optimization flags.
501 static jint set_aggressive_opts_flags();
502
503 static jint set_aggressive_heap_flags();
504
505 // Argument parsing
506 static void do_pd_flag_adjustments();
507 static bool parse_argument(const char* arg, Flag::Flags origin);
508 static bool process_argument(const char* arg, jboolean ignore_unrecognized, Flag::Flags origin);
509 static void process_java_launcher_argument(const char*, void*);
510 static void process_java_compiler_argument(const char* arg);
511 static jint parse_options_environment_variable(const char* name, ScopedVMInitArgs* vm_args);
512 static jint parse_java_tool_options_environment_variable(ScopedVMInitArgs* vm_args);
513 static jint parse_java_options_environment_variable(ScopedVMInitArgs* vm_args);
514 static jint parse_vm_options_file(const char* file_name, ScopedVMInitArgs* vm_args);
515 static jint parse_options_buffer(const char* name, char* buffer, const size_t buf_len, ScopedVMInitArgs* vm_args);
516 static jint parse_xss(const JavaVMOption* option, const char* tail, intx* out_ThreadStackSize);
517 static jint insert_vm_options_file(const JavaVMInitArgs* args,
518 const char* vm_options_file,
519 const int vm_options_file_pos,
520 ScopedVMInitArgs* vm_options_file_args,
521 ScopedVMInitArgs* args_out);
522 static bool args_contains_vm_options_file_arg(const JavaVMInitArgs* args);
523 static jint expand_vm_options_as_needed(const JavaVMInitArgs* args_in,
524 ScopedVMInitArgs* mod_args,
525 JavaVMInitArgs** args_out);
526 static jint match_special_option_and_act(const JavaVMInitArgs* args,
527 ScopedVMInitArgs* args_out);
528
529 static bool handle_deprecated_print_gc_flags();
530
531 static void handle_extra_cms_flags(const char* msg);
532
533 static jint parse_vm_init_args(const JavaVMInitArgs *java_tool_options_args,
534 const JavaVMInitArgs *java_options_args,
535 const JavaVMInitArgs *cmd_line_args);
536 static jint parse_each_vm_init_arg(const JavaVMInitArgs* args, bool* patch_mod_javabase, Flag::Flags origin);
537 static jint finalize_vm_init_args(bool patch_mod_javabase);
538 static bool is_bad_option(const JavaVMOption* option, jboolean ignore, const char* option_type);
539
540 static bool is_bad_option(const JavaVMOption* option, jboolean ignore) {
541 return is_bad_option(option, ignore, NULL);
542 }
543
544 static void describe_range_error(ArgsRange errcode);
545 static ArgsRange check_memory_size(julong size, julong min_size, julong max_size);
546 static ArgsRange parse_memory_size(const char* s, julong* long_arg,
547 julong min_size, julong max_size = max_uintx);
548 // Parse a string for a unsigned integer. Returns true if value
549 // is an unsigned integer greater than or equal to the minimum
550 // parameter passed and returns the value in uintx_arg. Returns
551 // false otherwise, with uintx_arg undefined.
552 static bool parse_uintx(const char* value, uintx* uintx_arg,
553 uintx min_size);
554
555 // methods to build strings from individual args
556 static void build_jvm_args(const char* arg);
557 static void build_jvm_flags(const char* arg);
558 static void add_string(char*** bldarray, int* count, const char* arg);
559 static const char* build_resource_string(char** args, int count);
560
561 static bool methodExists(
562 char* className, char* methodName,
563 int classesNum, char** classes, bool* allMethods,
564 int methodsNum, char** methods, bool* allClasses
565 );
566
567 static void parseOnlyLine(
568 const char* line,
569 short* classesNum, short* classesMax, char*** classes, bool** allMethods,
570 short* methodsNum, short* methodsMax, char*** methods, bool** allClasses
571 );
572
573 // Returns true if the flag is obsolete (and not yet expired).
574 // In this case the 'version' buffer is filled in with
575 // the version number when the flag became obsolete.
576 static bool is_obsolete_flag(const char* flag_name, JDK_Version* version);
577
578 #ifndef PRODUCT
579 static const char* removed_develop_logging_flag_name(const char* name);
580 #endif // PRODUCT
581
582 // Returns 1 if the flag is deprecated (and not yet obsolete or expired).
583 // In this case the 'version' buffer is filled in with the version number when
584 // the flag became deprecated.
585 // Returns -1 if the flag is expired or obsolete.
586 // Returns 0 otherwise.
587 static int is_deprecated_flag(const char* flag_name, JDK_Version* version);
588
589 // Return the real name for the flag passed on the command line (either an alias name or "flag_name").
590 static const char* real_flag_name(const char *flag_name);
591
592 // Return the "real" name for option arg if arg is an alias, and print a warning if arg is deprecated.
593 // Return NULL if the arg has expired.
594 static const char* handle_aliases_and_deprecation(const char* arg, bool warn);
595 static bool lookup_logging_aliases(const char* arg, char* buffer);
596 static AliasedLoggingFlag catch_logging_aliases(const char* name, bool on);
597 static short CompileOnlyClassesNum;
598 static short CompileOnlyClassesMax;
599 static char** CompileOnlyClasses;
600 static bool* CompileOnlyAllMethods;
601
602 static short CompileOnlyMethodsNum;
603 static short CompileOnlyMethodsMax;
604 static char** CompileOnlyMethods;
605 static bool* CompileOnlyAllClasses;
606
607 static short InterpretOnlyClassesNum;
608 static short InterpretOnlyClassesMax;
609 static char** InterpretOnlyClasses;
610 static bool* InterpretOnlyAllMethods;
611
612 static bool CheckCompileOnly;
613
614 static char* SharedArchivePath;
615
616 public:
617 // Scale compile thresholds
618 // Returns threshold scaled with CompileThresholdScaling
619 static intx scaled_compile_threshold(intx threshold, double scale);
620 static intx scaled_compile_threshold(intx threshold) {
621 return scaled_compile_threshold(threshold, CompileThresholdScaling);
622 }
623 // Returns freq_log scaled with CompileThresholdScaling
624 static intx scaled_freq_log(intx freq_log, double scale);
625 static intx scaled_freq_log(intx freq_log) {
626 return scaled_freq_log(freq_log, CompileThresholdScaling);
627 }
628
629 // Parses the arguments, first phase
630 static jint parse(const JavaVMInitArgs* args);
631 // Apply ergonomics
632 static jint apply_ergo();
633 // Adjusts the arguments after the OS have adjusted the arguments
634 static jint adjust_after_os();
635
636 static void set_gc_specific_flags();
637 #if INCLUDE_JVMCI
638 // Check consistency of jvmci vm argument settings.
639 static bool check_jvmci_args_consistency();
640 static void set_jvmci_specific_flags();
641 #endif
642 // Check for consistency in the selection of the garbage collector.
643 static bool check_gc_consistency(); // Check user-selected gc
644 // Check consistency or otherwise of VM argument settings
645 static bool check_vm_args_consistency();
646 // Used by os_solaris
647 static bool process_settings_file(const char* file_name, bool should_exist, jboolean ignore_unrecognized);
648
649 static size_t conservative_max_heap_alignment() { return _conservative_max_heap_alignment; }
650 // Return the maximum size a heap with compressed oops can take
651 static size_t max_heap_for_compressed_oops();
652
653 // return a char* array containing all options
654 static char** jvm_flags_array() { return _jvm_flags_array; }
655 static char** jvm_args_array() { return _jvm_args_array; }
656 static int num_jvm_flags() { return _num_jvm_flags; }
657 static int num_jvm_args() { return _num_jvm_args; }
658 // return the arguments passed to the Java application
659 static const char* java_command() { return _java_command; }
660
661 // print jvm_flags, jvm_args and java_command
662 static void print_on(outputStream* st);
663 static void print_summary_on(outputStream* st);
664
665 // convenient methods to get and set jvm_flags_file
666 static const char* get_jvm_flags_file() { return _jvm_flags_file; }
667 static void set_jvm_flags_file(const char *value) {
668 if (_jvm_flags_file != NULL) {
669 os::free(_jvm_flags_file);
670 }
671 _jvm_flags_file = os::strdup_check_oom(value);
672 }
673 // convenient methods to obtain / print jvm_flags and jvm_args
674 static const char* jvm_flags() { return build_resource_string(_jvm_flags_array, _num_jvm_flags); }
675 static const char* jvm_args() { return build_resource_string(_jvm_args_array, _num_jvm_args); }
676 static void print_jvm_flags_on(outputStream* st);
677 static void print_jvm_args_on(outputStream* st);
678
679 // -Dkey=value flags
680 static SystemProperty* system_properties() { return _system_properties; }
681 static const char* get_property(const char* key);
682
683 // -Djava.vendor.url.bug
684 static const char* java_vendor_url_bug() { return _java_vendor_url_bug; }
685
686 // -Dsun.java.launcher
687 static const char* sun_java_launcher() { return _sun_java_launcher; }
688 // Was VM created by a Java launcher?
689 static bool created_by_java_launcher();
690 // -Dsun.java.launcher.is_altjvm
691 static bool sun_java_launcher_is_altjvm();
692 // -Dsun.java.launcher.pid
693 static int sun_java_launcher_pid() { return _sun_java_launcher_pid; }
694
695 // -Xms
696 static size_t min_heap_size() { return _min_heap_size; }
697 static void set_min_heap_size(size_t v) { _min_heap_size = v; }
698
699 // -Xrun
700 static AgentLibrary* libraries() { return _libraryList.first(); }
701 static bool init_libraries_at_startup() { return !_libraryList.is_empty(); }
702 static void convert_library_to_agent(AgentLibrary* lib)
703 { _libraryList.remove(lib);
704 _agentList.add(lib); }
705
706 // -agentlib -agentpath
707 static AgentLibrary* agents() { return _agentList.first(); }
708 static bool init_agents_at_startup() { return !_agentList.is_empty(); }
709
710 // abort, exit, vfprintf hooks
711 static abort_hook_t abort_hook() { return _abort_hook; }
712 static exit_hook_t exit_hook() { return _exit_hook; }
713 static vfprintf_hook_t vfprintf_hook() { return _vfprintf_hook; }
714
715 static bool GetCheckCompileOnly () { return CheckCompileOnly; }
716
717 static const char* GetSharedArchivePath() { return SharedArchivePath; }
718
719 static bool CompileMethod(char* className, char* methodName) {
720 return
721 methodExists(
722 className, methodName,
723 CompileOnlyClassesNum, CompileOnlyClasses, CompileOnlyAllMethods,
724 CompileOnlyMethodsNum, CompileOnlyMethods, CompileOnlyAllClasses
725 );
726 }
727
728 // Java launcher properties
729 static void process_sun_java_launcher_properties(JavaVMInitArgs* args);
730
731 // System properties
732 static void init_system_properties();
733
734 // Update/Initialize System properties after JDK version number is known
735 static void init_version_specific_system_properties();
736
737 // Property List manipulation
738 static void PropertyList_add(SystemProperty *element);
739 static void PropertyList_add(SystemProperty** plist, SystemProperty *element);
740 static void PropertyList_add(SystemProperty** plist, const char* k, const char* v, bool writeable, bool internal);
741
742 static void PropertyList_unique_add(SystemProperty** plist, const char* k, const char* v,
743 PropertyAppendable append, PropertyWriteable writeable,
744 PropertyInternal internal);
745 static const char* PropertyList_get_value(SystemProperty* plist, const char* key);
746 static const char* PropertyList_get_readable_value(SystemProperty* plist, const char* key);
747 static int PropertyList_count(SystemProperty* pl);
748 static int PropertyList_readable_count(SystemProperty* pl);
749 static const char* PropertyList_get_key_at(SystemProperty* pl,int index);
750 static char* PropertyList_get_value_at(SystemProperty* pl,int index);
751
752 static bool is_internal_module_property(const char* option);
753
754 // Miscellaneous System property value getter and setters.
755 static void set_dll_dir(const char *value) { _sun_boot_library_path->set_value(value); }
756 static void set_java_home(const char *value) { _java_home->set_value(value); }
757 static void set_library_path(const char *value) { _java_library_path->set_value(value); }
758 static void set_ext_dirs(char *value) { _ext_dirs = os::strdup_check_oom(value); }
759
760 // Set up the underlying pieces of the system boot class path
761 static void add_patch_mod_prefix(const char *module_name, const char *path, bool* patch_mod_javabase);
762 static void set_sysclasspath(const char *value, bool has_jimage) {
763 // During start up, set by os::set_boot_path()
764 assert(get_sysclasspath() == NULL, "System boot class path previously set");
765 _system_boot_class_path->set_value(value);
766 _has_jimage = has_jimage;
767 }
768 static void append_sysclasspath(const char *value) {
769 _system_boot_class_path->append_value(value);
770 _jdk_boot_class_path_append->append_value(value);
771 }
772
773 static GrowableArray<ModulePatchPath*>* get_patch_mod_prefix() { return _patch_mod_prefix; }
774 static char* get_sysclasspath() { return _system_boot_class_path->value(); }
775 static char* get_jdk_boot_class_path_append() { return _jdk_boot_class_path_append->value(); }
776 static bool has_jimage() { return _has_jimage; }
777
778 static char* get_java_home() { return _java_home->value(); }
779 static char* get_dll_dir() { return _sun_boot_library_path->value(); }
780 static char* get_ext_dirs() { return _ext_dirs; }
781 static char* get_appclasspath() { return _java_class_path->value(); }
782 static void fix_appclasspath();
783
784
785 // Operation modi
786 static Mode mode() { return _mode; }
787 static bool is_interpreter_only() { return mode() == _int; }
788
789
790 // Utility: copies src into buf, replacing "%%" with "%" and "%p" with pid.
791 static bool copy_expand_pid(const char* src, size_t srclen, char* buf, size_t buflen);
792
793 static void check_unsupported_dumping_properties() NOT_CDS_RETURN;
794
795 static bool atojulong(const char *s, julong* result);
796 };
797
798 // Disable options not supported in this release, with a warning if they
799 // were explicitly requested on the command-line
800 #define UNSUPPORTED_OPTION(opt) \
801 do { \
802 if (opt) { \
803 if (FLAG_IS_CMDLINE(opt)) { \
804 warning("-XX:+" #opt " not supported in this VM"); \
805 } \
806 FLAG_SET_DEFAULT(opt, false); \
807 } \
808 } while(0)
809
810 #endif // SHARE_VM_RUNTIME_ARGUMENTS_HPP