1 /* 2 * Copyright (c) 2003, 2020, 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_MEMORY_FILEMAP_HPP 26 #define SHARE_MEMORY_FILEMAP_HPP 27 28 #include "classfile/classLoader.hpp" 29 #include "include/cds.h" 30 #include "memory/metaspaceShared.hpp" 31 #include "memory/metaspace.hpp" 32 #include "oops/compressedOops.hpp" 33 #include "utilities/align.hpp" 34 35 // Layout of the file: 36 // header: dump of archive instance plus versioning info, datestamp, etc. 37 // [magic # = 0xF00BABA2] 38 // ... padding to align on page-boundary 39 // read-write space 40 // read-only space 41 // misc data (block offset table, string table, symbols, dictionary, etc.) 42 // tag(666) 43 44 static const int JVM_IDENT_MAX = 256; 45 46 class CHeapBitMap; 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 long _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 long filesize() const { return _filesize; } 88 const char* name() const; 89 const char* manifest() const { 90 return (_manifest == NULL) ? NULL : (const char*)_manifest->data(); 91 } 92 int manifest_size() const { 93 return (_manifest == NULL) ? 0 : _manifest->length(); 94 } 95 void set_manifest(Array<u1>* manifest) { 96 _manifest = manifest; 97 } 98 bool check_non_existent() const; 99 void copy_from(SharedClassPathEntry* ent, ClassLoaderData* loader_data, TRAPS); 100 bool in_named_module() { 101 return is_modules_image() || // modules image doesn't contain unnamed modules 102 _is_module_path; // module path doesn't contain unnamed modules 103 } 104 }; 105 106 struct ArchiveHeapOopmapInfo { 107 address _oopmap; // bitmap for relocating embedded oops 108 size_t _offset; // this oopmap is stored at this offset from the bottom of the BM region 109 size_t _oopmap_size_in_bits; 110 size_t _oopmap_size_in_bytes; 111 }; 112 113 class SharedPathTable { 114 Array<u8>* _table; 115 int _size; 116 public: 117 SharedPathTable() : _table(NULL), _size(0) {} 118 SharedPathTable(Array<u8>* table, int size) : _table(table), _size(size) {} 119 120 void dumptime_init(ClassLoaderData* loader_data, Thread* THREAD); 121 void metaspace_pointers_do(MetaspaceClosure* it); 122 123 int size() { 124 return _size; 125 } 126 SharedClassPathEntry* path_at(int index) { 127 if (index < 0) { 128 return NULL; 129 } 130 assert(index < _size, "sanity"); 131 char* p = (char*)_table->data(); 132 p += sizeof(SharedClassPathEntry) * index; 133 return (SharedClassPathEntry*)p; 134 } 135 Array<u8>* table() {return _table;} 136 void set_table(Array<u8>* table) {_table = table;} 137 }; 138 139 140 class FileMapRegion: private CDSFileMapRegion { 141 void assert_is_heap_region() const { 142 assert(_is_heap_region, "must be heap region"); 143 } 144 void assert_is_not_heap_region() const { 145 assert(!_is_heap_region, "must not be heap region"); 146 } 147 148 public: 149 static FileMapRegion* cast(CDSFileMapRegion* p) { 150 return (FileMapRegion*)p; 151 } 152 153 // Accessors 154 int crc() const { return _crc; } 155 size_t file_offset() const { return _file_offset; } 156 size_t mapping_offset() const { return _mapping_offset; } 157 size_t mapping_end_offset() const { return _mapping_offset + used_aligned(); } 158 size_t used() const { return _used; } 159 size_t used_aligned() const; // aligned up to os::vm_allocation_granularity() 160 char* mapped_base() const { assert_is_not_heap_region(); return _mapped_base; } 161 char* mapped_end() const { return mapped_base() + used_aligned(); } 162 bool read_only() const { return _read_only != 0; } 163 bool allow_exec() const { return _allow_exec != 0; } 164 bool mapped_from_file() const { return _mapped_from_file != 0; } 165 size_t oopmap_offset() const { assert_is_heap_region(); return _oopmap_offset; } 166 size_t oopmap_size_in_bits() const { assert_is_heap_region(); return _oopmap_size_in_bits; } 167 168 void set_file_offset(size_t s) { _file_offset = s; } 169 void set_read_only(bool v) { _read_only = v; } 170 void set_mapped_base(char* p) { _mapped_base = p; } 171 void set_mapped_from_file(bool v) { _mapped_from_file = v; } 172 void init(int region_index, char* base, size_t size, bool read_only, 173 bool allow_exec, int crc); 174 175 void init_oopmap(size_t oopmap_offset, size_t size_in_bits) { 176 _oopmap_offset = oopmap_offset; 177 _oopmap_size_in_bits = size_in_bits; 178 } 179 }; 180 181 class FileMapHeader: private CDSFileMapHeaderBase { 182 friend class CDSOffsets; 183 friend class VMStructs; 184 185 size_t _header_size; 186 187 // 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 _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 uintx _max_heap_size; // java max heap size during dumping 196 CompressedOops::Mode _narrow_oop_mode; // compressed oop encoding mode 197 int _narrow_klass_shift; // save narrow klass base and shift 198 bool _compressed_oops; // save the flag UseCompressedOops 199 bool _compressed_class_ptrs; // save the flag UseCompressedClassPointers 200 size_t _cloned_vtables_offset; // The address of the first cloned vtable 201 size_t _serialized_data_offset; // Data accessed using {ReadClosure,WriteClosure}::serialize() 202 size_t _i2i_entry_code_buffers_offset; 203 size_t _i2i_entry_code_buffers_size; 204 address _heap_end; // heap end at dump time. 205 bool _base_archive_is_default; // indicates if the base archive is the system default one 206 207 // The following fields are all sanity checks for whether this archive 208 // will function correctly with this JVM and the bootclasspath it's 209 // invoked with. 210 char _jvm_ident[JVM_IDENT_MAX]; // identifier string of the jvm that created this dump 211 212 // size of the base archive name including NULL terminator 213 size_t _base_archive_name_size; 214 215 // The following is a table of all the boot/app/module path entries that were used 216 // during dumping. At run time, we validate these entries according to their 217 // SharedClassPathEntry::_type. See: 218 // check_nonempty_dir_in_shared_path_table() 219 // validate_shared_path_table() 220 // validate_non_existent_class_paths() 221 size_t _shared_path_table_offset; 222 int _shared_path_table_size; 223 224 jshort _app_class_paths_start_index; // Index of first app classpath entry 225 jshort _app_module_paths_start_index; // Index of first module path entry 226 jshort _num_module_paths; // number of module path entries 227 jshort _max_used_path_index; // max path index referenced during CDS dump 228 bool _verify_local; // BytecodeVerificationLocal setting 229 bool _verify_remote; // BytecodeVerificationRemote setting 230 bool _has_platform_or_app_classes; // Archive contains app classes 231 char* _requested_base_address; // Archive relocation is not necessary if we map with this base address. 232 char* _mapped_base_address; // Actual base address where archive is mapped. 233 234 bool _allow_archiving_with_java_agent; // setting of the AllowArchivingWithJavaAgent option 235 bool _use_optimized_module_handling;// No module-relation VM options were specified, so we can skip 236 // some expensive operations. 237 bool _use_full_module_graph; // Can we use the full archived module graph? 238 size_t _ptrmap_size_in_bits; // Size of pointer relocation bitmap 239 240 char* from_mapped_offset(size_t offset) const { 241 return mapped_base_address() + offset; 242 } 243 void set_mapped_offset(char* p, size_t *offset) { 244 assert(p >= mapped_base_address(), "sanity"); 245 *offset = p - mapped_base_address(); 246 } 247 public: 248 // Accessors -- fields declared in CDSFileMapHeaderBase 249 unsigned int magic() const {return _magic;} 250 int crc() const { return _crc; } 251 int version() const { return _version; } 252 253 void set_crc(int crc_value) { _crc = crc_value; } 254 void set_version(int v) { _version = v; } 255 256 // Accessors -- fields declared in FileMapHeader 257 258 size_t header_size() const { return _header_size; } 259 size_t alignment() const { return _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 uintx max_heap_size() const { return _max_heap_size; } 265 CompressedOops::Mode narrow_oop_mode() const { return _narrow_oop_mode; } 266 int narrow_klass_shift() const { return _narrow_klass_shift; } 267 address narrow_klass_base() const { return (address)mapped_base_address(); } 268 char* cloned_vtables() const { return from_mapped_offset(_cloned_vtables_offset); } 269 char* serialized_data() const { return from_mapped_offset(_serialized_data_offset); } 270 address i2i_entry_code_buffers() const { return (address)from_mapped_offset(_i2i_entry_code_buffers_offset); } 271 size_t i2i_entry_code_buffers_size() const { return _i2i_entry_code_buffers_size; } 272 address heap_end() const { return _heap_end; } 273 bool base_archive_is_default() const { return _base_archive_is_default; } 274 const char* jvm_ident() const { return _jvm_ident; } 275 size_t base_archive_name_size() const { return _base_archive_name_size; } 276 char* requested_base_address() const { return _requested_base_address; } 277 char* mapped_base_address() const { return _mapped_base_address; } 278 bool has_platform_or_app_classes() const { return _has_platform_or_app_classes; } 279 size_t ptrmap_size_in_bits() const { return _ptrmap_size_in_bits; } 280 bool compressed_oops() const { return _compressed_oops; } 281 bool compressed_class_pointers() const { return _compressed_class_ptrs; } 282 // FIXME: These should really return int 283 jshort max_used_path_index() const { return _max_used_path_index; } 284 jshort app_module_paths_start_index() const { return _app_module_paths_start_index; } 285 jshort app_class_paths_start_index() const { return _app_class_paths_start_index; } 286 jshort num_module_paths() const { return _num_module_paths; } 287 288 void set_has_platform_or_app_classes(bool v) { _has_platform_or_app_classes = v; } 289 void set_cloned_vtables(char* p) { set_mapped_offset(p, &_cloned_vtables_offset); } 290 void set_serialized_data(char* p) { set_mapped_offset(p, &_serialized_data_offset); } 291 void set_base_archive_name_size(size_t s) { _base_archive_name_size = s; } 292 void set_base_archive_is_default(bool b) { _base_archive_is_default = b; } 293 void set_header_size(size_t s) { _header_size = s; } 294 void set_ptrmap_size_in_bits(size_t s) { _ptrmap_size_in_bits = s; } 295 void set_mapped_base_address(char* p) { _mapped_base_address = p; } 296 void set_i2i_entry_code_buffers(address p, size_t s) { 297 set_mapped_offset((char*)p, &_i2i_entry_code_buffers_offset); 298 _i2i_entry_code_buffers_size = s; 299 } 300 301 void set_shared_path_table(SharedPathTable table) { 302 set_mapped_offset((char*)table.table(), &_shared_path_table_offset); 303 _shared_path_table_size = table.size(); 304 } 305 306 void set_final_requested_base(char* b) { 307 _requested_base_address = b; 308 _mapped_base_address = 0; 309 } 310 311 SharedPathTable shared_path_table() const { 312 return SharedPathTable((Array<u8>*)from_mapped_offset(_shared_path_table_offset), 313 _shared_path_table_size); 314 } 315 316 bool validate(); 317 int compute_crc(); 318 319 FileMapRegion* space_at(int i) { 320 assert(is_valid_region(i), "invalid region"); 321 return FileMapRegion::cast(&_space[i]); 322 } 323 324 void populate(FileMapInfo* info, size_t alignment); 325 326 static bool is_valid_region(int region) { 327 return (0 <= region && region < NUM_CDS_REGIONS); 328 } 329 }; 330 331 class FileMapInfo : public CHeapObj<mtInternal> { 332 private: 333 friend class ManifestStream; 334 friend class VMStructs; 335 friend class CDSOffsets; 336 friend class FileMapHeader; 337 338 bool _is_static; 339 bool _file_open; 340 bool _is_mapped; 341 int _fd; 342 size_t _file_offset; 343 const char* _full_path; 344 const char* _base_archive_name; 345 FileMapHeader* _header; 346 347 // TODO: Probably change the following to be non-static 348 static SharedPathTable _shared_path_table; 349 static SharedPathTable _saved_shared_path_table; 350 static bool _validating_shared_path_table; 351 352 // FileMapHeader describes the shared space data in the file to be 353 // mapped. This structure gets written to a file. It is not a class, so 354 // that the compilers don't add any compiler-private data to it. 355 356 static FileMapInfo* _current_info; 357 static FileMapInfo* _dynamic_archive_info; 358 static bool _heap_pointers_need_patching; 359 static bool _memory_mapping_failed; 360 static GrowableArray<const char*>* _non_existent_class_paths; 361 362 FileMapHeader *header() const { return _header; } 363 364 public: 365 static bool get_base_archive_name_from_header(const char* archive_name, 366 int* size, char** base_archive_name); 367 static bool check_archive(const char* archive_name, bool is_static); 368 static SharedPathTable shared_path_table() { 369 return _shared_path_table; 370 } 371 static SharedPathTable saved_shared_path_table() { 372 return _saved_shared_path_table; 373 } 374 375 bool init_from_file(int fd); 376 static void metaspace_pointers_do(MetaspaceClosure* it, bool use_copy = true); 377 378 void log_paths(const char* msg, int start_idx, int end_idx); 379 380 FileMapInfo(bool is_static); 381 ~FileMapInfo(); 382 383 // Accessors 384 int compute_header_crc() const { return header()->compute_crc(); } 385 void set_header_crc(int crc) { header()->set_crc(crc); } 386 int space_crc(int i) const { return space_at(i)->crc(); } 387 void populate_header(size_t alignment); 388 bool validate_header(); 389 void invalidate(); 390 int crc() const { return header()->crc(); } 391 int version() const { return header()->version(); } 392 size_t alignment() const { return header()->alignment(); } 393 address narrow_oop_base() const { return header()->narrow_oop_base(); } 394 int narrow_oop_shift() const { return header()->narrow_oop_shift(); } 395 uintx max_heap_size() const { return header()->max_heap_size(); } 396 address narrow_klass_base() const { return header()->narrow_klass_base(); } 397 int narrow_klass_shift() const { return header()->narrow_klass_shift(); } 398 399 CompressedOops::Mode narrow_oop_mode() const { return header()->narrow_oop_mode(); } 400 jshort app_module_paths_start_index() const { return header()->app_module_paths_start_index(); } 401 jshort app_class_paths_start_index() const { return header()->app_class_paths_start_index(); } 402 403 char* cloned_vtables() const { return header()->cloned_vtables(); } 404 void set_cloned_vtables(char* p) const { header()->set_cloned_vtables(p); } 405 char* serialized_data() const { return header()->serialized_data(); } 406 void set_serialized_data(char* p) const { header()->set_serialized_data(p); } 407 408 bool is_file_position_aligned() const; 409 void align_file_position(); 410 411 address i2i_entry_code_buffers() const { return header()->i2i_entry_code_buffers(); } 412 size_t i2i_entry_code_buffers_size() const { return header()->i2i_entry_code_buffers_size(); } 413 void set_i2i_entry_code_buffers(address addr, size_t s) const { 414 header()->set_i2i_entry_code_buffers(addr, s); 415 } 416 417 bool is_static() const { return _is_static; } 418 bool is_mapped() const { return _is_mapped; } 419 void set_is_mapped(bool v) { _is_mapped = v; } 420 const char* full_path() const { return _full_path; } 421 void set_final_requested_base(char* b); 422 423 char* requested_base_address() const { return header()->requested_base_address(); } 424 425 426 class DynamicArchiveHeader* dynamic_header() const { 427 assert(!is_static(), "must be"); 428 return (DynamicArchiveHeader*)header(); 429 } 430 431 void set_has_platform_or_app_classes(bool v) { 432 header()->set_has_platform_or_app_classes(v); 433 } 434 bool has_platform_or_app_classes() const { 435 return header()->has_platform_or_app_classes(); 436 } 437 438 static FileMapInfo* current_info() { 439 CDS_ONLY(return _current_info;) 440 NOT_CDS(return NULL;) 441 } 442 443 static void set_current_info(FileMapInfo* info) { 444 CDS_ONLY(_current_info = info;) 445 } 446 447 static FileMapInfo* dynamic_info() { 448 CDS_ONLY(return _dynamic_archive_info;) 449 NOT_CDS(return NULL;) 450 } 451 452 static void assert_mark(bool check); 453 454 // File manipulation. 455 bool initialize() NOT_CDS_RETURN_(false); 456 bool open_for_read(); 457 void open_for_write(const char* path = NULL); 458 void write_header(); 459 void write_region(int region, char* base, size_t size, 460 bool read_only, bool allow_exec); 461 void write_bitmap_region(const CHeapBitMap* ptrmap, 462 GrowableArray<ArchiveHeapOopmapInfo>* closed_oopmaps, 463 GrowableArray<ArchiveHeapOopmapInfo>* open_oopmaps); 464 size_t write_archive_heap_regions(GrowableArray<MemRegion> *heap_mem, 465 GrowableArray<ArchiveHeapOopmapInfo> *oopmaps, 466 int first_region_id, int max_num_regions); 467 void write_bytes(const void* buffer, size_t count); 468 void write_bytes_aligned(const void* buffer, size_t count); 469 size_t read_bytes(void* buffer, size_t count); 470 MapArchiveResult map_regions(int regions[], int num_regions, char* mapped_base_address, ReservedSpace rs); 471 void unmap_regions(int regions[], int num_regions); 472 void map_heap_regions() NOT_CDS_JAVA_HEAP_RETURN; 473 void fixup_mapped_heap_regions() NOT_CDS_JAVA_HEAP_RETURN; 474 void patch_archived_heap_embedded_pointers() NOT_CDS_JAVA_HEAP_RETURN; 475 void patch_archived_heap_embedded_pointers(MemRegion* ranges, int num_ranges, 476 int first_region_idx) NOT_CDS_JAVA_HEAP_RETURN; 477 bool has_heap_regions() NOT_CDS_JAVA_HEAP_RETURN_(false); 478 MemRegion get_heap_regions_range_with_current_oop_encoding_mode() NOT_CDS_JAVA_HEAP_RETURN_(MemRegion()); 479 void unmap_region(int i); 480 bool verify_region_checksum(int i); 481 void close(); 482 bool is_open() { return _file_open; } 483 ReservedSpace reserve_shared_memory(); 484 485 // JVM/TI RedefineClasses() support: 486 // Remap the shared readonly space to shared readwrite, private. 487 bool remap_shared_readonly_as_readwrite(); 488 489 // Errors. 490 static void fail_stop(const char *msg, ...) ATTRIBUTE_PRINTF(1, 2); 491 static void fail_continue(const char *msg, ...) ATTRIBUTE_PRINTF(1, 2); 492 static bool memory_mapping_failed() { 493 CDS_ONLY(return _memory_mapping_failed;) 494 NOT_CDS(return false;) 495 } 496 bool is_in_shared_region(const void* p, int idx) NOT_CDS_RETURN_(false); 497 498 // Stop CDS sharing and unmap CDS regions. 499 static void stop_sharing_and_unmap(const char* msg); 500 501 static void allocate_shared_path_table(); 502 static void copy_shared_path_table(ClassLoaderData* loader_data, Thread* THREAD); 503 static int add_shared_classpaths(int i, const char* which, ClassPathEntry *cpe, TRAPS); 504 static void check_nonempty_dir_in_shared_path_table(); 505 bool validate_shared_path_table(); 506 void validate_non_existent_class_paths(); 507 static void set_shared_path_table(FileMapInfo* info) { 508 _shared_path_table = info->header()->shared_path_table(); 509 } 510 static void update_jar_manifest(ClassPathEntry *cpe, SharedClassPathEntry* ent, TRAPS); 511 static int num_non_existent_class_paths(); 512 static void record_non_existent_class_path_entry(const char* path); 513 514 #if INCLUDE_JVMTI 515 static ClassFileStream* open_stream_for_jvmti(InstanceKlass* ik, Handle class_loader, TRAPS); 516 #endif 517 518 static SharedClassPathEntry* shared_path(int index) { 519 return _shared_path_table.path_at(index); 520 } 521 522 static const char* shared_path_name(int index) { 523 assert(index >= 0, "Sanity"); 524 return shared_path(index)->name(); 525 } 526 527 static int get_number_of_shared_paths() { 528 return _shared_path_table.size(); 529 } 530 531 static int get_module_shared_path_index(Symbol* location) NOT_CDS_RETURN_(-1); 532 533 char* region_addr(int idx); 534 535 // The offset of the first core region in the archive, relative to SharedBaseAddress 536 size_t mapping_base_offset() const { return first_core_space()->mapping_offset(); } 537 // The offset of the (exclusive) end of the last core region in this archive, relative to SharedBaseAddress 538 size_t mapping_end_offset() const { return last_core_space()->mapping_end_offset(); } 539 540 char* mapped_base() const { return first_core_space()->mapped_base(); } 541 char* mapped_end() const { return last_core_space()->mapped_end(); } 542 543 // Non-zero if the archive needs to be mapped a non-default location due to ASLR. 544 intx relocation_delta() const { 545 return header()->mapped_base_address() - header()->requested_base_address(); 546 } 547 548 FileMapRegion* first_core_space() const; 549 FileMapRegion* last_core_space() const; 550 551 FileMapRegion* space_at(int i) const { 552 return header()->space_at(i); 553 } 554 555 private: 556 void seek_to_position(size_t pos); 557 char* skip_first_path_entry(const char* path) NOT_CDS_RETURN_(NULL); 558 int num_paths(const char* path) NOT_CDS_RETURN_(0); 559 GrowableArray<const char*>* create_path_array(const char* path) NOT_CDS_RETURN_(NULL); 560 bool classpath_failure(const char* msg, const char* name) NOT_CDS_RETURN_(false); 561 bool check_paths(int shared_path_start_idx, int num_paths, 562 GrowableArray<const char*>* rp_array) NOT_CDS_RETURN_(false); 563 bool validate_boot_class_paths() NOT_CDS_RETURN_(false); 564 bool validate_app_class_paths(int shared_app_paths_len) NOT_CDS_RETURN_(false); 565 bool map_heap_data(MemRegion **heap_mem, int first, int max, int* num, 566 bool is_open = false) NOT_CDS_JAVA_HEAP_RETURN_(false); 567 bool region_crc_check(char* buf, size_t size, int expected_crc) NOT_CDS_RETURN_(false); 568 void dealloc_archive_heap_regions(MemRegion* regions, int num) NOT_CDS_JAVA_HEAP_RETURN; 569 void map_heap_regions_impl() NOT_CDS_JAVA_HEAP_RETURN; 570 char* map_bitmap_region(); 571 MapArchiveResult map_region(int i, intx addr_delta, char* mapped_base_address, ReservedSpace rs); 572 bool read_region(int i, char* base, size_t size); 573 bool relocate_pointers(intx addr_delta); 574 static size_t set_oopmaps_offset(GrowableArray<ArchiveHeapOopmapInfo> *oopmaps, size_t curr_size); 575 static size_t write_oopmaps(GrowableArray<ArchiveHeapOopmapInfo> *oopmaps, size_t curr_offset, uintptr_t* buffer); 576 577 // The starting address of spc, as calculated with CompressedOop::decode_non_null() 578 address start_address_as_decoded_with_current_oop_encoding_mode(FileMapRegion* spc) { 579 return decode_start_address(spc, true); 580 } 581 582 // The starting address of spc, as calculated with HeapShared::decode_from_archive() 583 address start_address_as_decoded_from_archive(FileMapRegion* spc) { 584 return decode_start_address(spc, false); 585 } 586 587 address decode_start_address(FileMapRegion* spc, bool with_current_oop_encoding_mode); 588 589 #if INCLUDE_JVMTI 590 static ClassPathEntry** _classpath_entries_for_jvmti; 591 static ClassPathEntry* get_classpath_entry_for_jvmti(int i, TRAPS); 592 #endif 593 }; 594 595 #endif // SHARE_MEMORY_FILEMAP_HPP