1 /* 2 * Copyright (c) 2003, 2021, 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 "oops/array.hpp" 31 #include "oops/compressedOops.hpp" 32 #include "utilities/align.hpp" 33 34 // To understand the layout of the CDS archive file: 35 // 36 // java -Xlog:cds+map=info:file=cds.map:none:filesize=0 37 // java -Xlog:cds+map=debug:file=cds.map:none:filesize=0 38 // java -Xlog:cds+map=trace:file=cds.map:none:filesize=0 39 40 static const int JVM_IDENT_MAX = 256; 41 42 class CHeapBitMap; 43 class ClassFileStream; 44 class ClassLoaderData; 45 class ClassPathEntry; 46 class outputStream; 47 48 class SharedClassPathEntry { 49 enum { 50 modules_image_entry, 51 jar_entry, 52 signed_jar_entry, 53 dir_entry, 54 non_existent_entry, 55 unknown_entry 56 }; 57 58 void set_name(const char* name, TRAPS); 59 60 u1 _type; 61 bool _is_module_path; 62 bool _from_class_path_attr; 63 time_t _timestamp; // jar timestamp, 0 if is directory, modules image or other 64 int64_t _filesize; // jar/jimage file size, -1 if is directory, -2 if other 65 Array<char>* _name; 66 Array<u1>* _manifest; 67 68 public: 69 void init(bool is_modules_image, bool is_module_path, ClassPathEntry* cpe, TRAPS); 70 void init_as_non_existent(const char* path, TRAPS); 71 void metaspace_pointers_do(MetaspaceClosure* it); 72 bool validate(bool is_class_path = true) const; 73 74 // The _timestamp only gets set for jar files. 75 bool has_timestamp() const { 76 return _timestamp != 0; 77 } 78 bool is_dir() const { return _type == dir_entry; } 79 bool is_modules_image() const { return _type == modules_image_entry; } 80 bool is_jar() const { return _type == jar_entry; } 81 bool is_signed() const { return _type == signed_jar_entry; } 82 void set_is_signed() { 83 _type = signed_jar_entry; 84 } 85 bool from_class_path_attr() { return _from_class_path_attr; } 86 time_t timestamp() const { return _timestamp; } 87 const char* name() const; 88 const char* manifest() const { 89 return (_manifest == NULL) ? NULL : (const char*)_manifest->data(); 90 } 91 int manifest_size() const { 92 return (_manifest == NULL) ? 0 : _manifest->length(); 93 } 94 void set_manifest(Array<u1>* manifest) { 95 _manifest = manifest; 96 } 97 bool check_non_existent() const; 98 void copy_from(SharedClassPathEntry* ent, ClassLoaderData* loader_data, TRAPS); 99 bool in_named_module() { 100 return is_modules_image() || // modules image doesn't contain unnamed modules 101 _is_module_path; // module path doesn't contain unnamed modules 102 } 103 }; 104 105 struct ArchiveHeapOopmapInfo { 106 address _oopmap; // bitmap for relocating embedded oops 107 size_t _offset; // this oopmap is stored at this offset from the bottom of the BM region 108 size_t _oopmap_size_in_bits; 109 size_t _oopmap_size_in_bytes; 110 }; 111 112 class SharedPathTable { 113 Array<u8>* _table; 114 int _size; 115 public: 116 SharedPathTable() : _table(NULL), _size(0) {} 117 SharedPathTable(Array<u8>* table, int size) : _table(table), _size(size) {} 118 119 void dumptime_init(ClassLoaderData* loader_data, TRAPS); 120 void metaspace_pointers_do(MetaspaceClosure* it); 121 122 int size() { 123 return _size; 124 } 125 SharedClassPathEntry* path_at(int index) { 126 if (index < 0) { 127 return NULL; 128 } 129 assert(index < _size, "sanity"); 130 char* p = (char*)_table->data(); 131 p += sizeof(SharedClassPathEntry) * index; 132 return (SharedClassPathEntry*)p; 133 } 134 Array<u8>* table() {return _table;} 135 void set_table(Array<u8>* table) {_table = table;} 136 }; 137 138 139 class FileMapRegion: private CDSFileMapRegion { 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 public: 148 static FileMapRegion* cast(CDSFileMapRegion* p) { 149 return (FileMapRegion*)p; 150 } 151 152 // Accessors 153 int crc() const { return _crc; } 154 size_t file_offset() const { return _file_offset; } 155 size_t mapping_offset() const { return _mapping_offset; } 156 size_t mapping_end_offset() const { return _mapping_offset + used_aligned(); } 157 size_t used() const { return _used; } 158 size_t used_aligned() const; // aligned up to MetaspaceShared::core_region_alignment() 159 char* mapped_base() const { assert_is_not_heap_region(); return _mapped_base; } 160 char* mapped_end() const { return mapped_base() + used_aligned(); } 161 bool read_only() const { return _read_only != 0; } 162 bool allow_exec() const { return _allow_exec != 0; } 163 bool mapped_from_file() const { return _mapped_from_file != 0; } 164 size_t oopmap_offset() const { assert_is_heap_region(); return _oopmap_offset; } 165 size_t oopmap_size_in_bits() const { assert_is_heap_region(); return _oopmap_size_in_bits; } 166 167 void set_file_offset(size_t s) { _file_offset = s; } 168 void set_read_only(bool v) { _read_only = v; } 169 void set_mapped_base(char* p) { _mapped_base = p; } 170 void set_mapped_from_file(bool v) { _mapped_from_file = v; } 171 void init(int region_index, size_t mapping_offset, size_t size, bool read_only, 172 bool allow_exec, int crc); 173 174 void init_oopmap(size_t oopmap_offset, size_t size_in_bits) { 175 _oopmap_offset = oopmap_offset; 176 _oopmap_size_in_bits = size_in_bits; 177 } 178 179 void print(outputStream* st, int region_index); 180 }; 181 182 class FileMapHeader: private CDSFileMapHeaderBase { 183 friend class CDSOffsets; 184 friend class VMStructs; 185 186 size_t _header_size; 187 188 // The following fields record the states of the VM during dump time. 189 // They are compared with the runtime states to see if the archive 190 // can be used. 191 size_t _core_region_alignment; // how shared archive should be aligned 192 int _obj_alignment; // value of ObjectAlignmentInBytes 193 address _narrow_oop_base; // compressed oop encoding base 194 int _narrow_oop_shift; // compressed oop encoding shift 195 bool _compact_strings; // value of CompactStrings 196 bool _compact_headers; // value of UseCompactObjectHeaders 197 uintx _max_heap_size; // java max heap size during dumping 198 CompressedOops::Mode _narrow_oop_mode; // compressed oop encoding mode 199 int _narrow_klass_shift; // save narrow klass base and shift 200 bool _compressed_oops; // save the flag UseCompressedOops 201 bool _compressed_class_ptrs; // save the flag UseCompressedClassPointers 202 size_t _cloned_vtables_offset; // The address of the first cloned vtable 203 size_t _serialized_data_offset; // Data accessed using {ReadClosure,WriteClosure}::serialize() 204 address _heap_begin; // heap begin at dump time. 205 address _heap_end; // heap end at dump time. 206 bool _base_archive_is_default; // indicates if the base archive is the system default one 207 208 // The following fields are all sanity checks for whether this archive 209 // will function correctly with this JVM and the bootclasspath it's 210 // invoked with. 211 char _jvm_ident[JVM_IDENT_MAX]; // identifier string of the jvm that created this dump 212 213 // size of the base archive name including NULL terminator 214 size_t _base_archive_name_size; 215 216 // The following is a table of all the boot/app/module path entries that were used 217 // during dumping. At run time, we validate these entries according to their 218 // SharedClassPathEntry::_type. See: 219 // check_nonempty_dir_in_shared_path_table() 220 // validate_shared_path_table() 221 // validate_non_existent_class_paths() 222 size_t _shared_path_table_offset; 223 int _shared_path_table_size; 224 225 jshort _app_class_paths_start_index; // Index of first app classpath entry 226 jshort _app_module_paths_start_index; // Index of first module path entry 227 jshort _num_module_paths; // number of module path entries 228 jshort _max_used_path_index; // max path index referenced during CDS dump 229 bool _verify_local; // BytecodeVerificationLocal setting 230 bool _verify_remote; // BytecodeVerificationRemote setting 231 bool _has_platform_or_app_classes; // Archive contains app classes 232 char* _requested_base_address; // Archive relocation is not necessary if we map with this base address. 233 char* _mapped_base_address; // Actual base address where archive is mapped. 234 235 bool _allow_archiving_with_java_agent; // setting of the AllowArchivingWithJavaAgent option 236 bool _use_optimized_module_handling;// No module-relation VM options were specified, so we can skip 237 // some expensive operations. 238 bool _use_full_module_graph; // Can we use the full archived module graph? 239 size_t _ptrmap_size_in_bits; // Size of pointer relocation bitmap 240 narrowOop _heap_obj_roots; // An objArray that stores all the roots of archived heap objects 241 char* from_mapped_offset(size_t offset) const { 242 return mapped_base_address() + offset; 243 } 244 void set_as_offset(char* p, size_t *offset); 245 public: 246 // Accessors -- fields declared in CDSFileMapHeaderBase 247 unsigned int magic() const { return _magic; } 248 int crc() const { return _crc; } 249 int version() const { return _version; } 250 251 void set_crc(int crc_value) { _crc = crc_value; } 252 void set_version(int v) { _version = v; } 253 254 // Accessors -- fields declared in FileMapHeader 255 256 size_t header_size() const { return _header_size; } 257 size_t core_region_alignment() const { return _core_region_alignment; } 258 int obj_alignment() const { return _obj_alignment; } 259 address narrow_oop_base() const { return _narrow_oop_base; } 260 int narrow_oop_shift() const { return _narrow_oop_shift; } 261 bool compact_strings() const { return _compact_strings; } 262 bool compact_headers() const { return _compact_headers; } 263 uintx max_heap_size() const { return _max_heap_size; } 264 CompressedOops::Mode narrow_oop_mode() const { return _narrow_oop_mode; } 265 int narrow_klass_shift() const { return _narrow_klass_shift; } 266 address narrow_klass_base() const { return (address)mapped_base_address(); } 267 char* cloned_vtables() const { return from_mapped_offset(_cloned_vtables_offset); } 268 char* serialized_data() const { return from_mapped_offset(_serialized_data_offset); } 269 address heap_begin() const { return _heap_begin; } 270 address heap_end() const { return _heap_end; } 271 bool base_archive_is_default() const { return _base_archive_is_default; } 272 const char* jvm_ident() const { return _jvm_ident; } 273 size_t base_archive_name_size() const { return _base_archive_name_size; } 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 size_t ptrmap_size_in_bits() const { return _ptrmap_size_in_bits; } 278 bool compressed_oops() const { return _compressed_oops; } 279 bool compressed_class_pointers() const { return _compressed_class_ptrs; } 280 // FIXME: These should really return int 281 jshort max_used_path_index() const { return _max_used_path_index; } 282 jshort app_module_paths_start_index() const { return _app_module_paths_start_index; } 283 jshort app_class_paths_start_index() const { return _app_class_paths_start_index; } 284 jshort num_module_paths() const { return _num_module_paths; } 285 narrowOop heap_obj_roots() const { return _heap_obj_roots; } 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_base_archive_name_size(size_t s) { _base_archive_name_size = s; } 291 void set_base_archive_is_default(bool b) { _base_archive_is_default = b; } 292 void set_header_size(size_t s) { _header_size = s; } 293 void set_ptrmap_size_in_bits(size_t s) { _ptrmap_size_in_bits = s; } 294 void set_mapped_base_address(char* p) { _mapped_base_address = p; } 295 void set_heap_obj_roots(narrowOop r) { _heap_obj_roots = r; } 296 297 void set_shared_path_table(SharedPathTable table) { 298 set_as_offset((char*)table.table(), &_shared_path_table_offset); 299 _shared_path_table_size = table.size(); 300 } 301 302 void set_requested_base(char* b) { 303 _requested_base_address = b; 304 _mapped_base_address = 0; 305 } 306 307 SharedPathTable shared_path_table() const { 308 return SharedPathTable((Array<u8>*)from_mapped_offset(_shared_path_table_offset), 309 _shared_path_table_size); 310 } 311 312 bool validate(); 313 int compute_crc(); 314 315 FileMapRegion* space_at(int i) { 316 assert(is_valid_region(i), "invalid region"); 317 return FileMapRegion::cast(&_space[i]); 318 } 319 320 void populate(FileMapInfo* info, size_t core_region_alignment); 321 322 static bool is_valid_region(int region) { 323 return (0 <= region && region < NUM_CDS_REGIONS); 324 } 325 326 void print(outputStream* st); 327 }; 328 329 class FileMapInfo : public CHeapObj<mtInternal> { 330 private: 331 friend class ManifestStream; 332 friend class VMStructs; 333 friend class ArchiveBuilder; 334 friend class CDSOffsets; 335 friend class FileMapHeader; 336 337 bool _is_static; 338 bool _file_open; 339 bool _is_mapped; 340 int _fd; 341 size_t _file_offset; 342 const char* _full_path; 343 const char* _base_archive_name; 344 FileMapHeader* _header; 345 346 // TODO: Probably change the following to be non-static 347 static SharedPathTable _shared_path_table; 348 static SharedPathTable _saved_shared_path_table; 349 static bool _validating_shared_path_table; 350 351 // FileMapHeader describes the shared space data in the file to be 352 // mapped. This structure gets written to a file. It is not a class, so 353 // that the compilers don't add any compiler-private data to it. 354 355 static FileMapInfo* _current_info; 356 static FileMapInfo* _dynamic_archive_info; 357 static bool _heap_pointers_need_patching; 358 static bool _memory_mapping_failed; 359 static GrowableArray<const char*>* _non_existent_class_paths; 360 361 FileMapHeader *header() const { return _header; } 362 363 public: 364 static bool get_base_archive_name_from_header(const char* archive_name, 365 int* size, char** base_archive_name); 366 static bool check_archive(const char* archive_name, bool is_static); 367 static SharedPathTable shared_path_table() { 368 return _shared_path_table; 369 } 370 static SharedPathTable saved_shared_path_table() { 371 return _saved_shared_path_table; 372 } 373 374 bool init_from_file(int fd); 375 static void metaspace_pointers_do(MetaspaceClosure* it, bool use_copy = true); 376 377 void log_paths(const char* msg, int start_idx, int end_idx); 378 379 FileMapInfo(bool is_static); 380 ~FileMapInfo(); 381 382 // Accessors 383 int compute_header_crc() const { return header()->compute_crc(); } 384 void set_header_crc(int crc) { header()->set_crc(crc); } 385 int space_crc(int i) const { return space_at(i)->crc(); } 386 void populate_header(size_t core_region_alignment); 387 bool validate_header(); 388 void invalidate(); 389 int crc() const { return header()->crc(); } 390 int version() const { return header()->version(); } 391 unsigned int magic() const { return header()->magic(); } 392 address narrow_oop_base() const { return header()->narrow_oop_base(); } 393 int narrow_oop_shift() const { return header()->narrow_oop_shift(); } 394 uintx max_heap_size() const { return header()->max_heap_size(); } 395 address narrow_klass_base() const { return header()->narrow_klass_base(); } 396 int narrow_klass_shift() const { return header()->narrow_klass_shift(); } 397 size_t core_region_alignment() const { return header()->core_region_alignment(); } 398 399 void set_header_base_archive_name_size(size_t size) { header()->set_base_archive_name_size(size); } 400 void set_header_base_archive_is_default(bool is_default) { header()->set_base_archive_is_default(is_default); } 401 402 CompressedOops::Mode narrow_oop_mode() const { return header()->narrow_oop_mode(); } 403 jshort app_module_paths_start_index() const { return header()->app_module_paths_start_index(); } 404 jshort app_class_paths_start_index() const { return header()->app_class_paths_start_index(); } 405 406 char* cloned_vtables() const { return header()->cloned_vtables(); } 407 void set_cloned_vtables(char* p) const { header()->set_cloned_vtables(p); } 408 char* serialized_data() const { return header()->serialized_data(); } 409 void set_serialized_data(char* p) const { header()->set_serialized_data(p); } 410 411 bool is_file_position_aligned() const; 412 void align_file_position(); 413 414 bool is_static() const { return _is_static; } 415 bool is_mapped() const { return _is_mapped; } 416 void set_is_mapped(bool v) { _is_mapped = v; } 417 const char* full_path() const { return _full_path; } 418 419 void set_requested_base(char* b) { header()->set_requested_base(b); } 420 char* requested_base_address() const { return header()->requested_base_address(); } 421 422 class DynamicArchiveHeader* dynamic_header() const { 423 assert(!is_static(), "must be"); 424 return (DynamicArchiveHeader*)header(); 425 } 426 427 void set_has_platform_or_app_classes(bool v) { 428 header()->set_has_platform_or_app_classes(v); 429 } 430 bool has_platform_or_app_classes() const { 431 return header()->has_platform_or_app_classes(); 432 } 433 434 static FileMapInfo* current_info() { 435 CDS_ONLY(return _current_info;) 436 NOT_CDS(return NULL;) 437 } 438 439 static void set_current_info(FileMapInfo* info) { 440 CDS_ONLY(_current_info = info;) 441 } 442 443 static FileMapInfo* dynamic_info() { 444 CDS_ONLY(return _dynamic_archive_info;) 445 NOT_CDS(return NULL;) 446 } 447 448 static void assert_mark(bool check); 449 450 // File manipulation. 451 bool initialize() NOT_CDS_RETURN_(false); 452 bool open_for_read(); 453 void open_for_write(const char* path = NULL); 454 void write_header(); 455 void write_region(int region, char* base, size_t size, 456 bool read_only, bool allow_exec); 457 char* write_bitmap_region(const CHeapBitMap* ptrmap, 458 GrowableArray<ArchiveHeapOopmapInfo>* closed_oopmaps, 459 GrowableArray<ArchiveHeapOopmapInfo>* open_oopmaps, 460 size_t &size_in_bytes); 461 size_t write_archive_heap_regions(GrowableArray<MemRegion> *heap_mem, 462 GrowableArray<ArchiveHeapOopmapInfo> *oopmaps, 463 int first_region_id, int max_num_regions); 464 void write_bytes(const void* buffer, size_t count); 465 void write_bytes_aligned(const void* buffer, size_t count); 466 size_t read_bytes(void* buffer, size_t count); 467 MapArchiveResult map_regions(int regions[], int num_regions, char* mapped_base_address, ReservedSpace rs); 468 void unmap_regions(int regions[], int num_regions); 469 void map_heap_regions() NOT_CDS_JAVA_HEAP_RETURN; 470 void fixup_mapped_heap_regions() NOT_CDS_JAVA_HEAP_RETURN; 471 void patch_archived_heap_embedded_pointers() NOT_CDS_JAVA_HEAP_RETURN; 472 void patch_archived_heap_embedded_pointers(MemRegion* ranges, int num_ranges, 473 int first_region_idx) NOT_CDS_JAVA_HEAP_RETURN; 474 bool has_heap_regions() NOT_CDS_JAVA_HEAP_RETURN_(false); 475 MemRegion get_heap_regions_range_with_current_oop_encoding_mode() NOT_CDS_JAVA_HEAP_RETURN_(MemRegion()); 476 void unmap_region(int i); 477 bool verify_region_checksum(int i); 478 void close(); 479 bool is_open() { return _file_open; } 480 ReservedSpace reserve_shared_memory(); 481 482 // JVM/TI RedefineClasses() support: 483 // Remap the shared readonly space to shared readwrite, private. 484 bool remap_shared_readonly_as_readwrite(); 485 486 // Errors. 487 static void fail_stop(const char *msg, ...) ATTRIBUTE_PRINTF(1, 2); 488 static void fail_continue(const char *msg, ...) ATTRIBUTE_PRINTF(1, 2); 489 static bool memory_mapping_failed() { 490 CDS_ONLY(return _memory_mapping_failed;) 491 NOT_CDS(return false;) 492 } 493 bool is_in_shared_region(const void* p, int idx) NOT_CDS_RETURN_(false); 494 495 // Stop CDS sharing and unmap CDS regions. 496 static void stop_sharing_and_unmap(const char* msg); 497 498 static void allocate_shared_path_table(TRAPS); 499 static void copy_shared_path_table(ClassLoaderData* loader_data, TRAPS); 500 static int add_shared_classpaths(int i, const char* which, ClassPathEntry *cpe, TRAPS); 501 static void check_nonempty_dir_in_shared_path_table(); 502 bool validate_shared_path_table(); 503 void validate_non_existent_class_paths(); 504 static void set_shared_path_table(FileMapInfo* info) { 505 _shared_path_table = info->header()->shared_path_table(); 506 } 507 static void update_jar_manifest(ClassPathEntry *cpe, SharedClassPathEntry* ent, TRAPS); 508 static int num_non_existent_class_paths(); 509 static void record_non_existent_class_path_entry(const char* path); 510 511 #if INCLUDE_JVMTI 512 static ClassFileStream* open_stream_for_jvmti(InstanceKlass* ik, Handle class_loader, TRAPS); 513 #endif 514 515 static SharedClassPathEntry* shared_path(int index) { 516 return _shared_path_table.path_at(index); 517 } 518 519 static const char* shared_path_name(int index) { 520 assert(index >= 0, "Sanity"); 521 return shared_path(index)->name(); 522 } 523 524 static int get_number_of_shared_paths() { 525 return _shared_path_table.size(); 526 } 527 528 static int get_module_shared_path_index(Symbol* location) NOT_CDS_RETURN_(-1); 529 530 char* region_addr(int idx); 531 532 // The offset of the first core region in the archive, relative to SharedBaseAddress 533 size_t mapping_base_offset() const { return first_core_space()->mapping_offset(); } 534 // The offset of the (exclusive) end of the last core region in this archive, relative to SharedBaseAddress 535 size_t mapping_end_offset() const { return last_core_space()->mapping_end_offset(); } 536 537 char* mapped_base() const { return first_core_space()->mapped_base(); } 538 char* mapped_end() const { return last_core_space()->mapped_end(); } 539 540 // Non-zero if the archive needs to be mapped a non-default location due to ASLR. 541 intx relocation_delta() const { 542 return header()->mapped_base_address() - header()->requested_base_address(); 543 } 544 545 FileMapRegion* first_core_space() const; 546 FileMapRegion* last_core_space() const; 547 548 FileMapRegion* space_at(int i) const { 549 return header()->space_at(i); 550 } 551 552 void print(outputStream* st) { 553 header()->print(st); 554 } 555 556 const char* vm_version() { 557 return header()->jvm_ident(); 558 } 559 560 private: 561 void seek_to_position(size_t pos); 562 char* skip_first_path_entry(const char* path) NOT_CDS_RETURN_(NULL); 563 int num_paths(const char* path) NOT_CDS_RETURN_(0); 564 GrowableArray<const char*>* create_path_array(const char* path) NOT_CDS_RETURN_(NULL); 565 bool classpath_failure(const char* msg, const char* name) NOT_CDS_RETURN_(false); 566 bool check_paths(int shared_path_start_idx, int num_paths, 567 GrowableArray<const char*>* rp_array) NOT_CDS_RETURN_(false); 568 bool validate_boot_class_paths() NOT_CDS_RETURN_(false); 569 bool validate_app_class_paths(int shared_app_paths_len) NOT_CDS_RETURN_(false); 570 bool map_heap_data(MemRegion **heap_mem, int first, int max, int* num, 571 bool is_open = false) NOT_CDS_JAVA_HEAP_RETURN_(false); 572 bool region_crc_check(char* buf, size_t size, int expected_crc) NOT_CDS_RETURN_(false); 573 void dealloc_archive_heap_regions(MemRegion* regions, int num) NOT_CDS_JAVA_HEAP_RETURN; 574 void map_heap_regions_impl() NOT_CDS_JAVA_HEAP_RETURN; 575 char* map_bitmap_region(); 576 MapArchiveResult map_region(int i, intx addr_delta, char* mapped_base_address, ReservedSpace rs); 577 bool read_region(int i, char* base, size_t size); 578 bool relocate_pointers_in_core_regions(intx addr_delta); 579 static size_t set_oopmaps_offset(GrowableArray<ArchiveHeapOopmapInfo> *oopmaps, size_t curr_size); 580 static size_t write_oopmaps(GrowableArray<ArchiveHeapOopmapInfo> *oopmaps, size_t curr_offset, char* buffer); 581 582 // The starting address of spc, as calculated with CompressedOop::decode_non_null() 583 address start_address_as_decoded_with_current_oop_encoding_mode(FileMapRegion* spc) { 584 return decode_start_address(spc, true); 585 } 586 587 // The starting address of spc, as calculated with HeapShared::decode_from_archive() 588 address start_address_as_decoded_from_archive(FileMapRegion* spc) { 589 return decode_start_address(spc, false); 590 } 591 592 address decode_start_address(FileMapRegion* spc, bool with_current_oop_encoding_mode); 593 594 #if INCLUDE_JVMTI 595 static ClassPathEntry** _classpath_entries_for_jvmti; 596 static ClassPathEntry* get_classpath_entry_for_jvmti(int i, TRAPS); 597 #endif 598 }; 599 600 #endif // SHARE_CDS_FILEMAP_HPP