1 /* 2 * Copyright (c) 2003, 2023, 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_CDS_FILEMAP_HPP 26 #define SHARE_CDS_FILEMAP_HPP 27 28 #include "cds/metaspaceShared.hpp" 29 #include "include/cds.h" 30 #include "logging/logLevel.hpp" 31 #include "memory/allocation.hpp" 32 #include "oops/array.hpp" 33 #include "oops/compressedOops.hpp" 34 #include "utilities/align.hpp" 35 36 // To understand the layout of the CDS archive file: 37 // 38 // java -Xlog:cds+map=info:file=cds.map:none:filesize=0 39 // java -Xlog:cds+map=debug:file=cds.map:none:filesize=0 40 // java -Xlog:cds+map=trace:file=cds.map:none:filesize=0 41 42 static const int JVM_IDENT_MAX = 256; 43 44 class ArchiveHeapInfo; 45 class BitMapView; 46 class CHeapBitMap; 47 class ClassFileStream; 48 class ClassLoaderData; 49 class ClassPathEntry; 50 class outputStream; 51 52 class SharedClassPathEntry : public MetaspaceObj { 53 enum { 54 modules_image_entry, 55 jar_entry, 56 signed_jar_entry, 57 dir_entry, 58 non_existent_entry, 59 unknown_entry 60 }; 61 62 void set_name(const char* name, TRAPS); 63 64 u1 _type; 65 bool _is_module_path; 66 bool _from_class_path_attr; 67 time_t _timestamp; // jar timestamp, 0 if is directory, modules image or other 68 int64_t _filesize; // jar/jimage file size, -1 if is directory, -2 if other 69 Array<char>* _name; 70 Array<u1>* _manifest; 71 72 public: 73 SharedClassPathEntry() : _type(0), _is_module_path(false), 74 _from_class_path_attr(false), _timestamp(0), 75 _filesize(0), _name(nullptr), _manifest(nullptr) {} 76 static int size() { 77 static_assert(is_aligned(sizeof(SharedClassPathEntry), wordSize), "must be"); 78 return (int)(sizeof(SharedClassPathEntry) / wordSize); 79 } 80 void init(bool is_modules_image, bool is_module_path, ClassPathEntry* cpe, TRAPS); 81 void init_as_non_existent(const char* path, TRAPS); 82 void metaspace_pointers_do(MetaspaceClosure* it); 83 MetaspaceObj::Type type() const { return SharedClassPathEntryType; } 84 bool validate(bool is_class_path = true) const; 85 86 // The _timestamp only gets set for jar files. 87 bool has_timestamp() const { 88 return _timestamp != 0; 89 } 90 bool is_dir() const { return _type == dir_entry; } 91 bool is_modules_image() const { return _type == modules_image_entry; } 92 bool is_jar() const { return _type == jar_entry; } 93 bool is_signed() const { return _type == signed_jar_entry; } 94 void set_is_signed() { 95 _type = signed_jar_entry; 96 } 97 bool from_class_path_attr() { return _from_class_path_attr; } 98 time_t timestamp() const { return _timestamp; } 99 const char* name() const; 100 const char* manifest() const { 101 return (_manifest == nullptr) ? nullptr : (const char*)_manifest->data(); 102 } 103 int manifest_size() const { 104 return (_manifest == nullptr) ? 0 : _manifest->length(); 105 } 106 void set_manifest(Array<u1>* manifest) { 107 _manifest = manifest; 108 } 109 bool check_non_existent() const; 110 void copy_from(SharedClassPathEntry* ent, ClassLoaderData* loader_data, TRAPS); 111 bool in_named_module() { 112 return is_modules_image() || // modules image doesn't contain unnamed modules 113 _is_module_path; // module path doesn't contain unnamed modules 114 } 115 }; 116 117 class SharedPathTable { 118 Array<SharedClassPathEntry*>* _entries; 119 public: 120 SharedPathTable() : _entries(nullptr) {} 121 SharedPathTable(Array<SharedClassPathEntry*>* entries) : _entries(entries) {} 122 123 void dumptime_init(ClassLoaderData* loader_data, TRAPS); 124 void metaspace_pointers_do(MetaspaceClosure* it); 125 126 int size() { 127 return _entries == nullptr ? 0 : _entries->length(); 128 } 129 SharedClassPathEntry* path_at(int index) { 130 return _entries->at(index); 131 } 132 Array<SharedClassPathEntry*>* table() {return _entries;} 133 void set_table(Array<SharedClassPathEntry*>* table) {_entries = table;} 134 }; 135 136 137 class FileMapRegion: private CDSFileMapRegion { 138 BitMapView bitmap_view(bool is_oopmap); 139 public: 140 void assert_is_heap_region() const { 141 assert(_is_heap_region, "must be heap region"); 142 } 143 void assert_is_not_heap_region() const { 144 assert(!_is_heap_region, "must not be heap region"); 145 } 146 147 static FileMapRegion* cast(CDSFileMapRegion* p) { 148 return (FileMapRegion*)p; 149 } 150 151 // Accessors 152 int crc() const { return _crc; } 153 size_t file_offset() const { return _file_offset; } 154 size_t mapping_offset() const { return _mapping_offset; } 155 size_t mapping_end_offset() const { return _mapping_offset + used_aligned(); } 156 size_t used() const { return _used; } 157 size_t used_aligned() const; // aligned up to MetaspaceShared::core_region_alignment() 158 char* mapped_base() const { return _mapped_base; } 159 char* mapped_end() const { return mapped_base() + used_aligned(); } 160 bool read_only() const { return _read_only != 0; } 161 bool allow_exec() const { return _allow_exec != 0; } 162 bool mapped_from_file() const { return _mapped_from_file != 0; } 163 size_t oopmap_offset() const { assert_is_heap_region(); return _oopmap_offset; } 164 size_t oopmap_size_in_bits() const { assert_is_heap_region(); return _oopmap_size_in_bits; } 165 166 void set_file_offset(size_t s) { _file_offset = s; } 167 void set_read_only(bool v) { _read_only = v; } 168 void set_mapped_base(char* p) { _mapped_base = p; } 169 void set_mapped_from_file(bool v) { _mapped_from_file = v; } 170 void init(int region_index, size_t mapping_offset, size_t size, bool read_only, 171 bool allow_exec, int crc); 172 void init_oopmap(size_t offset, size_t size_in_bits); 173 void init_ptrmap(size_t offset, size_t size_in_bits); 174 BitMapView oopmap_view(); 175 BitMapView ptrmap_view(); 176 bool has_ptrmap() { return _ptrmap_size_in_bits != 0; } 177 178 bool check_region_crc() const; 179 void print(outputStream* st, int region_index); 180 }; 181 182 class FileMapHeader: private CDSFileMapHeaderBase { 183 friend class CDSConstants; 184 friend class VMStructs; 185 186 private: 187 // The following fields record the states of the VM during dump time. 188 // They are compared with the runtime states to see if the archive 189 // can be used. 190 size_t _core_region_alignment; // how shared archive should be aligned 191 int _obj_alignment; // value of ObjectAlignmentInBytes 192 address _narrow_oop_base; // compressed oop encoding base 193 int _narrow_oop_shift; // compressed oop encoding shift 194 bool _compact_strings; // value of CompactStrings 195 bool _compact_headers; // value of UseCompactObjectHeaders 196 uintx _max_heap_size; // java max heap size during dumping 197 CompressedOops::Mode _narrow_oop_mode; // compressed oop encoding mode 198 int _narrow_klass_shift; // save narrow klass base and shift 199 bool _compressed_oops; // save the flag UseCompressedOops 200 bool _compressed_class_ptrs; // save the flag UseCompressedClassPointers 201 size_t _cloned_vtables_offset; // The address of the first cloned vtable 202 size_t _serialized_data_offset; // Data accessed using {ReadClosure,WriteClosure}::serialize() 203 address _heap_begin; // heap begin at dump time. 204 address _heap_end; // heap end at dump time. 205 bool _has_non_jar_in_classpath; // non-jar file entry exists in classpath 206 unsigned int _common_app_classpath_prefix_size; // size of the common prefix of app class paths 207 // 0 if no common prefix exists 208 209 // The following fields are all sanity checks for whether this archive 210 // will function correctly with this JVM and the bootclasspath it's 211 // invoked with. 212 char _jvm_ident[JVM_IDENT_MAX]; // identifier string of the jvm that created this dump 213 214 // The following is a table of all the boot/app/module path entries that were used 215 // during dumping. At run time, we validate these entries according to their 216 // SharedClassPathEntry::_type. See: 217 // check_nonempty_dir_in_shared_path_table() 218 // validate_shared_path_table() 219 // validate_non_existent_class_paths() 220 size_t _shared_path_table_offset; 221 222 jshort _app_class_paths_start_index; // Index of first app classpath entry 223 jshort _app_module_paths_start_index; // Index of first module path entry 224 jshort _num_module_paths; // number of module path entries 225 jshort _max_used_path_index; // max path index referenced during CDS dump 226 bool _verify_local; // BytecodeVerificationLocal setting 227 bool _verify_remote; // BytecodeVerificationRemote setting 228 bool _has_platform_or_app_classes; // Archive contains app classes 229 char* _requested_base_address; // Archive relocation is not necessary if we map with this base address. 230 char* _mapped_base_address; // Actual base address where archive is mapped. 231 232 bool _allow_archiving_with_java_agent; // setting of the AllowArchivingWithJavaAgent option 233 bool _use_optimized_module_handling;// No module-relation VM options were specified, so we can skip 234 // some expensive operations. 235 bool _use_full_module_graph; // Can we use the full archived module graph? 236 size_t _ptrmap_size_in_bits; // Size of pointer relocation bitmap 237 char* from_mapped_offset(size_t offset) const { 238 return mapped_base_address() + offset; 239 } 240 void set_as_offset(char* p, size_t *offset); 241 public: 242 // Accessors -- fields declared in GenericCDSFileMapHeader 243 unsigned int magic() const { return _generic_header._magic; } 244 int crc() const { return _generic_header._crc; } 245 int version() const { return _generic_header._version; } 246 unsigned int header_size() const { return _generic_header._header_size; } 247 unsigned int base_archive_name_offset() const { return _generic_header._base_archive_name_offset; } 248 unsigned int base_archive_name_size() const { return _generic_header._base_archive_name_size; } 249 unsigned int common_app_classpath_prefix_size() const { return _common_app_classpath_prefix_size; } 250 251 void set_magic(unsigned int m) { _generic_header._magic = m; } 252 void set_crc(int crc_value) { _generic_header._crc = crc_value; } 253 void set_version(int v) { _generic_header._version = v; } 254 void set_header_size(unsigned int s) { _generic_header._header_size = s; } 255 void set_base_archive_name_offset(unsigned int s) { _generic_header._base_archive_name_offset = s; } 256 void set_base_archive_name_size(unsigned int s) { _generic_header._base_archive_name_size = s; } 257 void set_common_app_classpath_prefix_size(unsigned int s) { _common_app_classpath_prefix_size = s; } 258 259 size_t core_region_alignment() const { return _core_region_alignment; } 260 int obj_alignment() const { return _obj_alignment; } 261 address narrow_oop_base() const { return _narrow_oop_base; } 262 int narrow_oop_shift() const { return _narrow_oop_shift; } 263 bool compact_strings() const { return _compact_strings; } 264 bool compact_headers() const { return _compact_headers; } 265 uintx max_heap_size() const { return _max_heap_size; } 266 CompressedOops::Mode narrow_oop_mode() const { return _narrow_oop_mode; } 267 int narrow_klass_shift() const { return _narrow_klass_shift; } 268 address narrow_klass_base() const { return (address)mapped_base_address(); } 269 char* cloned_vtables() const { return from_mapped_offset(_cloned_vtables_offset); } 270 char* serialized_data() const { return from_mapped_offset(_serialized_data_offset); } 271 address heap_begin() const { return _heap_begin; } 272 address heap_end() const { return _heap_end; } 273 const char* jvm_ident() const { return _jvm_ident; } 274 char* requested_base_address() const { return _requested_base_address; } 275 char* mapped_base_address() const { return _mapped_base_address; } 276 bool has_platform_or_app_classes() const { return _has_platform_or_app_classes; } 277 bool has_non_jar_in_classpath() const { return _has_non_jar_in_classpath; } 278 size_t ptrmap_size_in_bits() const { return _ptrmap_size_in_bits; } 279 bool compressed_oops() const { return _compressed_oops; } 280 bool compressed_class_pointers() const { return _compressed_class_ptrs; } 281 // FIXME: These should really return int 282 jshort max_used_path_index() const { return _max_used_path_index; } 283 jshort app_module_paths_start_index() const { return _app_module_paths_start_index; } 284 jshort app_class_paths_start_index() const { return _app_class_paths_start_index; } 285 jshort num_module_paths() const { return _num_module_paths; } 286 287 void set_has_platform_or_app_classes(bool v) { _has_platform_or_app_classes = v; } 288 void set_cloned_vtables(char* p) { set_as_offset(p, &_cloned_vtables_offset); } 289 void set_serialized_data(char* p) { set_as_offset(p, &_serialized_data_offset); } 290 void set_ptrmap_size_in_bits(size_t s) { _ptrmap_size_in_bits = s; } 291 void set_mapped_base_address(char* p) { _mapped_base_address = p; } 292 void copy_base_archive_name(const char* name); 293 294 void set_shared_path_table(SharedPathTable table) { 295 set_as_offset((char*)table.table(), &_shared_path_table_offset); 296 } 297 298 void set_requested_base(char* b) { 299 _requested_base_address = b; 300 _mapped_base_address = 0; 301 } 302 303 SharedPathTable shared_path_table() const { 304 return SharedPathTable((Array<SharedClassPathEntry*>*) 305 from_mapped_offset(_shared_path_table_offset)); 306 } 307 308 bool validate(); 309 int compute_crc(); 310 311 FileMapRegion* region_at(int i) { 312 assert(is_valid_region(i), "invalid region"); 313 return FileMapRegion::cast(&_regions[i]); 314 } 315 316 void populate(FileMapInfo *info, size_t core_region_alignment, size_t header_size, 317 size_t base_archive_name_size, size_t base_archive_name_offset, 318 size_t common_app_classpath_size); 319 static bool is_valid_region(int region) { 320 return (0 <= region && region < NUM_CDS_REGIONS); 321 } 322 323 void print(outputStream* st); 324 }; 325 326 class FileMapInfo : public CHeapObj<mtInternal> { 327 private: 328 friend class ManifestStream; 329 friend class VMStructs; 330 friend class ArchiveBuilder; 331 friend class CDSOffsets; 332 friend class FileMapHeader; 333 334 bool _is_static; 335 bool _file_open; 336 bool _is_mapped; 337 int _fd; 338 size_t _file_offset; 339 const char* _full_path; 340 const char* _base_archive_name; 341 FileMapHeader* _header; 342 343 static SharedPathTable _shared_path_table; 344 static bool _validating_shared_path_table; 345 346 // FileMapHeader describes the shared space data in the file to be 347 // mapped. This structure gets written to a file. It is not a class, so 348 // that the compilers don't add any compiler-private data to it. 349 350 static FileMapInfo* _current_info; 351 static FileMapInfo* _dynamic_archive_info; 352 static bool _heap_pointers_need_patching; 353 static bool _memory_mapping_failed; 354 static GrowableArray<const char*>* _non_existent_class_paths; 355 356 public: 357 FileMapHeader *header() const { return _header; } 358 static bool get_base_archive_name_from_header(const char* archive_name, 359 char** base_archive_name); 360 static SharedPathTable shared_path_table() { 361 return _shared_path_table; 362 } 363 364 bool init_from_file(int fd); 365 static void metaspace_pointers_do(MetaspaceClosure* it) { 366 _shared_path_table.metaspace_pointers_do(it); 367 } 368 369 void log_paths(const char* msg, int start_idx, int end_idx); 370 371 FileMapInfo(const char* full_apth, bool is_static); 372 ~FileMapInfo(); 373 374 // Accessors 375 int compute_header_crc() const { return header()->compute_crc(); } 376 void set_header_crc(int crc) { header()->set_crc(crc); } 377 int region_crc(int i) const { return region_at(i)->crc(); } 378 void populate_header(size_t core_region_alignment); 379 bool validate_header(); 380 void invalidate(); 381 int crc() const { return header()->crc(); } 382 int version() const { return header()->version(); } 383 unsigned int magic() const { return header()->magic(); } 384 address narrow_oop_base() const { return header()->narrow_oop_base(); } 385 int narrow_oop_shift() const { return header()->narrow_oop_shift(); } 386 uintx max_heap_size() const { return header()->max_heap_size(); } 387 address narrow_klass_base() const { return header()->narrow_klass_base(); } 388 int narrow_klass_shift() const { return header()->narrow_klass_shift(); } 389 size_t core_region_alignment() const { return header()->core_region_alignment(); } 390 391 CompressedOops::Mode narrow_oop_mode() const { return header()->narrow_oop_mode(); } 392 jshort app_module_paths_start_index() const { return header()->app_module_paths_start_index(); } 393 jshort app_class_paths_start_index() const { return header()->app_class_paths_start_index(); } 394 395 char* cloned_vtables() const { return header()->cloned_vtables(); } 396 void set_cloned_vtables(char* p) const { header()->set_cloned_vtables(p); } 397 char* serialized_data() const { return header()->serialized_data(); } 398 void set_serialized_data(char* p) const { header()->set_serialized_data(p); } 399 400 bool is_file_position_aligned() const; 401 void align_file_position(); 402 403 bool is_static() const { return _is_static; } 404 bool is_mapped() const { return _is_mapped; } 405 void set_is_mapped(bool v) { _is_mapped = v; } 406 const char* full_path() const { return _full_path; } 407 408 void set_requested_base(char* b) { header()->set_requested_base(b); } 409 char* requested_base_address() const { return header()->requested_base_address(); } 410 411 class DynamicArchiveHeader* dynamic_header() const { 412 assert(!is_static(), "must be"); 413 return (DynamicArchiveHeader*)header(); 414 } 415 416 void set_has_platform_or_app_classes(bool v) { 417 header()->set_has_platform_or_app_classes(v); 418 } 419 bool has_platform_or_app_classes() const { 420 return header()->has_platform_or_app_classes(); 421 } 422 423 static FileMapInfo* current_info() { 424 CDS_ONLY(return _current_info;) 425 NOT_CDS(return nullptr;) 426 } 427 428 static void set_current_info(FileMapInfo* info) { 429 CDS_ONLY(_current_info = info;) 430 } 431 432 static FileMapInfo* dynamic_info() { 433 CDS_ONLY(return _dynamic_archive_info;) 434 NOT_CDS(return nullptr;) 435 } 436 437 static void assert_mark(bool check); 438 439 // File manipulation. 440 bool initialize() NOT_CDS_RETURN_(false); 441 bool open_for_read(); 442 void open_for_write(); 443 void write_header(); 444 void write_region(int region, char* base, size_t size, 445 bool read_only, bool allow_exec); 446 char* write_bitmap_region(const CHeapBitMap* ptrmap, ArchiveHeapInfo* heap_info, 447 size_t &size_in_bytes); 448 size_t write_heap_region(ArchiveHeapInfo* heap_info); 449 void write_bytes(const void* buffer, size_t count); 450 void write_bytes_aligned(const void* buffer, size_t count); 451 size_t read_bytes(void* buffer, size_t count); 452 static size_t readonly_total(); 453 MapArchiveResult map_regions(int regions[], int num_regions, char* mapped_base_address, ReservedSpace rs); 454 void unmap_regions(int regions[], int num_regions); 455 void map_or_load_heap_region() NOT_CDS_JAVA_HEAP_RETURN; 456 void fixup_mapped_heap_region() NOT_CDS_JAVA_HEAP_RETURN; 457 void patch_heap_embedded_pointers() NOT_CDS_JAVA_HEAP_RETURN; 458 bool has_heap_region() NOT_CDS_JAVA_HEAP_RETURN_(false); 459 MemRegion get_heap_region_requested_range() NOT_CDS_JAVA_HEAP_RETURN_(MemRegion()); 460 bool read_region(int i, char* base, size_t size, bool do_commit); 461 char* map_bitmap_region(); 462 void unmap_region(int i); 463 void close(); 464 bool is_open() { return _file_open; } 465 ReservedSpace reserve_shared_memory(); 466 467 // JVM/TI RedefineClasses() support: 468 // Remap the shared readonly space to shared readwrite, private. 469 bool remap_shared_readonly_as_readwrite(); 470 471 static bool memory_mapping_failed() { 472 CDS_ONLY(return _memory_mapping_failed;) 473 NOT_CDS(return false;) 474 } 475 476 static void allocate_shared_path_table(TRAPS); 477 static int add_shared_classpaths(int i, const char* which, ClassPathEntry *cpe, TRAPS); 478 static void check_nonempty_dir_in_shared_path_table(); 479 bool check_module_paths(); 480 bool validate_shared_path_table(); 481 void validate_non_existent_class_paths(); 482 static void set_shared_path_table(FileMapInfo* info) { 483 _shared_path_table = info->header()->shared_path_table(); 484 } 485 static void update_jar_manifest(ClassPathEntry *cpe, SharedClassPathEntry* ent, TRAPS); 486 static int num_non_existent_class_paths(); 487 static void record_non_existent_class_path_entry(const char* path); 488 489 #if INCLUDE_JVMTI 490 // Caller needs a ResourceMark because parts of the returned cfs are resource-allocated. 491 static ClassFileStream* open_stream_for_jvmti(InstanceKlass* ik, Handle class_loader, TRAPS); 492 #endif 493 494 static SharedClassPathEntry* shared_path(int index) { 495 return _shared_path_table.path_at(index); 496 } 497 498 static const char* shared_path_name(int index) { 499 assert(index >= 0, "Sanity"); 500 return shared_path(index)->name(); 501 } 502 503 static int get_number_of_shared_paths() { 504 return _shared_path_table.size(); 505 } 506 507 static int get_module_shared_path_index(Symbol* location) NOT_CDS_RETURN_(-1); 508 509 // The offset of the first core region in the archive, relative to SharedBaseAddress 510 size_t mapping_base_offset() const { return first_core_region()->mapping_offset(); } 511 // The offset of the (exclusive) end of the last core region in this archive, relative to SharedBaseAddress 512 size_t mapping_end_offset() const { return last_core_region()->mapping_end_offset(); } 513 514 char* mapped_base() const { return first_core_region()->mapped_base(); } 515 char* mapped_end() const { return last_core_region()->mapped_end(); } 516 517 // Non-zero if the archive needs to be mapped a non-default location due to ASLR. 518 intx relocation_delta() const { 519 return header()->mapped_base_address() - header()->requested_base_address(); 520 } 521 522 FileMapRegion* first_core_region() const; 523 FileMapRegion* last_core_region() const; 524 525 FileMapRegion* region_at(int i) const { 526 return header()->region_at(i); 527 } 528 529 void print(outputStream* st) const; 530 531 const char* vm_version() { 532 return header()->jvm_ident(); 533 } 534 535 private: 536 void seek_to_position(size_t pos); 537 char* skip_first_path_entry(const char* path) NOT_CDS_RETURN_(nullptr); 538 int num_paths(const char* path) NOT_CDS_RETURN_(0); 539 bool check_paths_existence(const char* paths) NOT_CDS_RETURN_(false); 540 GrowableArray<const char*>* create_dumptime_app_classpath_array() NOT_CDS_RETURN_(nullptr); 541 GrowableArray<const char*>* create_path_array(const char* path) NOT_CDS_RETURN_(nullptr); 542 bool classpath_failure(const char* msg, const char* name) NOT_CDS_RETURN_(false); 543 unsigned int longest_common_app_classpath_prefix_len(int num_paths, 544 GrowableArray<const char*>* rp_array) 545 NOT_CDS_RETURN_(0); 546 bool check_paths(int shared_path_start_idx, int num_paths, 547 GrowableArray<const char*>* rp_array, 548 unsigned int dumptime_prefix_len, 549 unsigned int runtime_prefix_len) NOT_CDS_RETURN_(false); 550 bool validate_boot_class_paths() NOT_CDS_RETURN_(false); 551 bool validate_app_class_paths(int shared_app_paths_len) NOT_CDS_RETURN_(false); 552 bool map_heap_region_impl() NOT_CDS_JAVA_HEAP_RETURN_(false); 553 void dealloc_heap_region() NOT_CDS_JAVA_HEAP_RETURN; 554 bool can_use_heap_region(); 555 bool load_heap_region() NOT_CDS_JAVA_HEAP_RETURN_(false); 556 bool map_heap_region() NOT_CDS_JAVA_HEAP_RETURN_(false); 557 void init_heap_region_relocation(); 558 MapArchiveResult map_region(int i, intx addr_delta, char* mapped_base_address, ReservedSpace rs); 559 bool relocate_pointers_in_core_regions(intx addr_delta); 560 561 static MemRegion _mapped_heap_memregion; 562 563 public: 564 address heap_region_dumptime_address() NOT_CDS_JAVA_HEAP_RETURN_(nullptr); 565 address heap_region_requested_address() NOT_CDS_JAVA_HEAP_RETURN_(nullptr); 566 address heap_region_mapped_address() NOT_CDS_JAVA_HEAP_RETURN_(nullptr); 567 narrowOop encoded_heap_region_dumptime_address(); 568 569 private: 570 571 #if INCLUDE_JVMTI 572 static ClassPathEntry** _classpath_entries_for_jvmti; 573 static ClassPathEntry* get_classpath_entry_for_jvmti(int i, TRAPS); 574 #endif 575 }; 576 577 #endif // SHARE_CDS_FILEMAP_HPP