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