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