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 dir_entry,
53 non_existent_entry,
54 unknown_entry
55 };
56
57 void set_name(const char* name, TRAPS);
58
59 u1 _type;
60 bool _is_module_path;
61 bool _from_class_path_attr;
62 time_t _timestamp; // jar timestamp, 0 if is directory, modules image or other
63 int64_t _filesize; // jar/jimage file size, -1 if is directory, -2 if other
64 Array<char>* _name;
65 Array<u1>* _manifest;
66
67 public:
68 void init(bool is_modules_image, bool is_module_path, ClassPathEntry* cpe, TRAPS);
69 void init_as_non_existent(const char* path, TRAPS);
70 void metaspace_pointers_do(MetaspaceClosure* it);
71 bool validate(bool is_class_path = true) const;
72
73 // The _timestamp only gets set for jar files.
74 bool has_timestamp() const {
75 return _timestamp != 0;
76 }
77 bool is_dir() const { return _type == dir_entry; }
78 bool is_modules_image() const { return _type == modules_image_entry; }
79 bool is_jar() const { return _type == jar_entry; }
80 bool from_class_path_attr() { return _from_class_path_attr; }
81 time_t timestamp() const { return _timestamp; }
82 const char* name() const;
83 const char* manifest() const {
84 return (_manifest == NULL) ? NULL : (const char*)_manifest->data();
85 }
86 int manifest_size() const {
87 return (_manifest == NULL) ? 0 : _manifest->length();
88 }
89 void set_manifest(Array<u1>* manifest) {
90 _manifest = manifest;
91 }
92 bool check_non_existent() const;
93 void copy_from(SharedClassPathEntry* ent, ClassLoaderData* loader_data, TRAPS);
94 bool in_named_module() {
95 return is_modules_image() || // modules image doesn't contain unnamed modules
96 _is_module_path; // module path doesn't contain unnamed modules
97 }
98 };
99
100 struct ArchiveHeapOopmapInfo {
101 address _oopmap; // bitmap for relocating embedded oops
102 size_t _offset; // this oopmap is stored at this offset from the bottom of the BM region
103 size_t _oopmap_size_in_bits;
104 size_t _oopmap_size_in_bytes;
105 };
106
107 class SharedPathTable {
108 Array<u8>* _table;
109 int _size;
110 public:
111 SharedPathTable() : _table(NULL), _size(0) {}
112 SharedPathTable(Array<u8>* table, int size) : _table(table), _size(size) {}
113
114 void dumptime_init(ClassLoaderData* loader_data, TRAPS);
115 void metaspace_pointers_do(MetaspaceClosure* it);
116
117 int size() {
118 return _size;
119 }
120 SharedClassPathEntry* path_at(int index) {
121 if (index < 0) {
122 return NULL;
123 }
124 assert(index < _size, "sanity");
125 char* p = (char*)_table->data();
126 p += sizeof(SharedClassPathEntry) * index;
127 return (SharedClassPathEntry*)p;
128 }
129 Array<u8>* table() {return _table;}
130 void set_table(Array<u8>* table) {_table = table;}
131 };
132
133
134 class FileMapRegion: private CDSFileMapRegion {
135 void assert_is_heap_region() const {
136 assert(_is_heap_region, "must be heap region");
137 }
138 void assert_is_not_heap_region() const {
139 assert(!_is_heap_region, "must not be heap region");
140 }
141
142 public:
143 static FileMapRegion* cast(CDSFileMapRegion* p) {
144 return (FileMapRegion*)p;
145 }
146
147 // Accessors
148 int crc() const { return _crc; }
149 size_t file_offset() const { return _file_offset; }
150 size_t mapping_offset() const { return _mapping_offset; }
151 size_t mapping_end_offset() const { return _mapping_offset + used_aligned(); }
152 size_t used() const { return _used; }
153 size_t used_aligned() const; // aligned up to MetaspaceShared::core_region_alignment()
154 char* mapped_base() const { assert_is_not_heap_region(); return _mapped_base; }
155 char* mapped_end() const { return mapped_base() + used_aligned(); }
156 bool read_only() const { return _read_only != 0; }
157 bool allow_exec() const { return _allow_exec != 0; }
158 bool mapped_from_file() const { return _mapped_from_file != 0; }
159 size_t oopmap_offset() const { assert_is_heap_region(); return _oopmap_offset; }
160 size_t oopmap_size_in_bits() const { assert_is_heap_region(); return _oopmap_size_in_bits; }
161
162 void set_file_offset(size_t s) { _file_offset = s; }
163 void set_read_only(bool v) { _read_only = v; }
164 void set_mapped_base(char* p) { _mapped_base = p; }
165 void set_mapped_from_file(bool v) { _mapped_from_file = v; }
166 void init(int region_index, size_t mapping_offset, size_t size, bool read_only,
167 bool allow_exec, int crc);
168
169 void init_oopmap(size_t oopmap_offset, size_t size_in_bits) {
170 _oopmap_offset = oopmap_offset;
171 _oopmap_size_in_bits = size_in_bits;
172 }
173
174 void print(outputStream* st, int region_index);
175 };
176
177 class FileMapHeader: private CDSFileMapHeaderBase {
178 friend class CDSOffsets;
179 friend class VMStructs;
180
181 size_t _header_size;
182
183 // The following fields record the states of the VM during dump time.
184 // They are compared with the runtime states to see if the archive
185 // can be used.
186 size_t _core_region_alignment; // how shared archive should be aligned
187 int _obj_alignment; // value of ObjectAlignmentInBytes
188 address _narrow_oop_base; // compressed oop encoding base
189 int _narrow_oop_shift; // compressed oop encoding shift
190 bool _compact_strings; // value of CompactStrings
191 uintx _max_heap_size; // java max heap size during dumping
192 CompressedOops::Mode _narrow_oop_mode; // compressed oop encoding mode
193 int _narrow_klass_shift; // save narrow klass base and shift
194 bool _compressed_oops; // save the flag UseCompressedOops
195 bool _compressed_class_ptrs; // save the flag UseCompressedClassPointers
196 size_t _cloned_vtables_offset; // The address of the first cloned vtable
197 size_t _serialized_data_offset; // Data accessed using {ReadClosure,WriteClosure}::serialize()
198 address _heap_begin; // heap begin at dump time.
199 address _heap_end; // heap end at dump time.
200 bool _base_archive_is_default; // indicates if the base archive is the system default one
201
202 // The following fields are all sanity checks for whether this archive
203 // will function correctly with this JVM and the bootclasspath it's
204 // invoked with.
205 char _jvm_ident[JVM_IDENT_MAX]; // identifier string of the jvm that created this dump
206
207 // size of the base archive name including NULL terminator
208 size_t _base_archive_name_size;
209
210 // The following is a table of all the boot/app/module path entries that were used
211 // during dumping. At run time, we validate these entries according to their
212 // SharedClassPathEntry::_type. See:
213 // check_nonempty_dir_in_shared_path_table()
214 // validate_shared_path_table()
215 // validate_non_existent_class_paths()
216 size_t _shared_path_table_offset;
217 int _shared_path_table_size;
218
219 jshort _app_class_paths_start_index; // Index of first app classpath entry
220 jshort _app_module_paths_start_index; // Index of first module path entry
221 jshort _num_module_paths; // number of module path entries
222 jshort _max_used_path_index; // max path index referenced during CDS dump
223 bool _verify_local; // BytecodeVerificationLocal setting
224 bool _verify_remote; // BytecodeVerificationRemote setting
225 bool _has_platform_or_app_classes; // Archive contains app classes
226 char* _requested_base_address; // Archive relocation is not necessary if we map with this base address.
227 char* _mapped_base_address; // Actual base address where archive is mapped.
228
229 bool _allow_archiving_with_java_agent; // setting of the AllowArchivingWithJavaAgent option
230 bool _use_optimized_module_handling;// No module-relation VM options were specified, so we can skip
231 // some expensive operations.
232 bool _use_full_module_graph; // Can we use the full archived module graph?
233 size_t _ptrmap_size_in_bits; // Size of pointer relocation bitmap
234 narrowOop _heap_obj_roots; // An objArray that stores all the roots of archived heap objects
235 char* from_mapped_offset(size_t offset) const {
236 return mapped_base_address() + offset;
237 }
238 void set_as_offset(char* p, size_t *offset);
239 public:
240 // Accessors -- fields declared in CDSFileMapHeaderBase
241 unsigned int magic() const { return _magic; }
242 int crc() const { return _crc; }
243 int version() const { return _version; }
244
245 void set_crc(int crc_value) { _crc = crc_value; }
246 void set_version(int v) { _version = v; }
247
248 // Accessors -- fields declared in FileMapHeader
249
250 size_t header_size() const { return _header_size; }
251 size_t core_region_alignment() const { return _core_region_alignment; }
252 int obj_alignment() const { return _obj_alignment; }
253 address narrow_oop_base() const { return _narrow_oop_base; }
254 int narrow_oop_shift() const { return _narrow_oop_shift; }
255 bool compact_strings() const { return _compact_strings; }
256 uintx max_heap_size() const { return _max_heap_size; }
257 CompressedOops::Mode narrow_oop_mode() const { return _narrow_oop_mode; }
258 int narrow_klass_shift() const { return _narrow_klass_shift; }
259 address narrow_klass_base() const { return (address)mapped_base_address(); }
260 char* cloned_vtables() const { return from_mapped_offset(_cloned_vtables_offset); }
261 char* serialized_data() const { return from_mapped_offset(_serialized_data_offset); }
262 address heap_begin() const { return _heap_begin; }
263 address heap_end() const { return _heap_end; }
264 bool base_archive_is_default() const { return _base_archive_is_default; }
265 const char* jvm_ident() const { return _jvm_ident; }
266 size_t base_archive_name_size() const { return _base_archive_name_size; }
267 char* requested_base_address() const { return _requested_base_address; }
268 char* mapped_base_address() const { return _mapped_base_address; }
269 bool has_platform_or_app_classes() const { return _has_platform_or_app_classes; }
270 size_t ptrmap_size_in_bits() const { return _ptrmap_size_in_bits; }
271 bool compressed_oops() const { return _compressed_oops; }
272 bool compressed_class_pointers() const { return _compressed_class_ptrs; }
273 // FIXME: These should really return int
274 jshort max_used_path_index() const { return _max_used_path_index; }
275 jshort app_module_paths_start_index() const { return _app_module_paths_start_index; }
276 jshort app_class_paths_start_index() const { return _app_class_paths_start_index; }
277 jshort num_module_paths() const { return _num_module_paths; }
278 narrowOop heap_obj_roots() const { return _heap_obj_roots; }
279
280 void set_has_platform_or_app_classes(bool v) { _has_platform_or_app_classes = v; }
281 void set_cloned_vtables(char* p) { set_as_offset(p, &_cloned_vtables_offset); }
282 void set_serialized_data(char* p) { set_as_offset(p, &_serialized_data_offset); }
283 void set_base_archive_name_size(size_t s) { _base_archive_name_size = s; }
284 void set_base_archive_is_default(bool b) { _base_archive_is_default = b; }
285 void set_header_size(size_t s) { _header_size = s; }
286 void set_ptrmap_size_in_bits(size_t s) { _ptrmap_size_in_bits = s; }
287 void set_mapped_base_address(char* p) { _mapped_base_address = p; }
288 void set_heap_obj_roots(narrowOop r) { _heap_obj_roots = r; }
289
290 void set_shared_path_table(SharedPathTable table) {
291 set_as_offset((char*)table.table(), &_shared_path_table_offset);
292 _shared_path_table_size = table.size();
293 }
294
295 void set_requested_base(char* b) {
296 _requested_base_address = b;
297 _mapped_base_address = 0;
298 }
299
300 SharedPathTable shared_path_table() const {
301 return SharedPathTable((Array<u8>*)from_mapped_offset(_shared_path_table_offset),
302 _shared_path_table_size);
303 }
304
305 bool validate();
306 int compute_crc();
307
308 FileMapRegion* space_at(int i) {
309 assert(is_valid_region(i), "invalid region");
310 return FileMapRegion::cast(&_space[i]);
311 }
312
313 void populate(FileMapInfo* info, size_t core_region_alignment);
314
315 static bool is_valid_region(int region) {
316 return (0 <= region && region < NUM_CDS_REGIONS);
317 }
318
319 void print(outputStream* st);
320 };
321
322 class FileMapInfo : public CHeapObj<mtInternal> {
323 private:
324 friend class ManifestStream;
325 friend class VMStructs;
326 friend class ArchiveBuilder;
327 friend class CDSOffsets;
328 friend class FileMapHeader;
329
330 bool _is_static;
331 bool _file_open;
332 bool _is_mapped;
333 int _fd;
334 size_t _file_offset;
335 const char* _full_path;
336 const char* _base_archive_name;
337 FileMapHeader* _header;
338
339 // TODO: Probably change the following to be non-static
340 static SharedPathTable _shared_path_table;
341 static SharedPathTable _saved_shared_path_table;
342 static bool _validating_shared_path_table;
343
344 // FileMapHeader describes the shared space data in the file to be
345 // mapped. This structure gets written to a file. It is not a class, so
346 // that the compilers don't add any compiler-private data to it.
347
348 static FileMapInfo* _current_info;
349 static FileMapInfo* _dynamic_archive_info;
350 static bool _heap_pointers_need_patching;
351 static bool _memory_mapping_failed;
352 static GrowableArray<const char*>* _non_existent_class_paths;
353
354 FileMapHeader *header() const { return _header; }
355
356 public:
357 static bool get_base_archive_name_from_header(const char* archive_name,
358 int* size, char** base_archive_name);
359 static bool check_archive(const char* archive_name, bool is_static);
360 static SharedPathTable shared_path_table() {
361 return _shared_path_table;
362 }
363 static SharedPathTable saved_shared_path_table() {
364 return _saved_shared_path_table;
365 }
366
367 bool init_from_file(int fd);
368 static void metaspace_pointers_do(MetaspaceClosure* it, bool use_copy = true);
369
370 void log_paths(const char* msg, int start_idx, int end_idx);
371
372 FileMapInfo(bool is_static);
373 ~FileMapInfo();
374
375 // Accessors
376 int compute_header_crc() const { return header()->compute_crc(); }
377 void set_header_crc(int crc) { header()->set_crc(crc); }
378 int space_crc(int i) const { return space_at(i)->crc(); }
379 void populate_header(size_t core_region_alignment);
380 bool validate_header();
381 void invalidate();
382 int crc() const { return header()->crc(); }
383 int version() const { return header()->version(); }
384 unsigned int magic() const { return header()->magic(); }
385 address narrow_oop_base() const { return header()->narrow_oop_base(); }
386 int narrow_oop_shift() const { return header()->narrow_oop_shift(); }
387 uintx max_heap_size() const { return header()->max_heap_size(); }
388 address narrow_klass_base() const { return header()->narrow_klass_base(); }
389 int narrow_klass_shift() const { return header()->narrow_klass_shift(); }
390 size_t core_region_alignment() const { return header()->core_region_alignment(); }
391
392 void set_header_base_archive_name_size(size_t size) { header()->set_base_archive_name_size(size); }
393 void set_header_base_archive_is_default(bool is_default) { header()->set_base_archive_is_default(is_default); }
394
395 CompressedOops::Mode narrow_oop_mode() const { return header()->narrow_oop_mode(); }
396 jshort app_module_paths_start_index() const { return header()->app_module_paths_start_index(); }
397 jshort app_class_paths_start_index() const { return header()->app_class_paths_start_index(); }
398
399 char* cloned_vtables() const { return header()->cloned_vtables(); }
400 void set_cloned_vtables(char* p) const { header()->set_cloned_vtables(p); }
401 char* serialized_data() const { return header()->serialized_data(); }
402 void set_serialized_data(char* p) const { header()->set_serialized_data(p); }
403
404 bool is_file_position_aligned() const;
405 void align_file_position();
406
407 bool is_static() const { return _is_static; }
408 bool is_mapped() const { return _is_mapped; }
409 void set_is_mapped(bool v) { _is_mapped = v; }
410 const char* full_path() const { return _full_path; }
411
412 void set_requested_base(char* b) { header()->set_requested_base(b); }
413 char* requested_base_address() const { return header()->requested_base_address(); }
414
415 class DynamicArchiveHeader* dynamic_header() const {
416 assert(!is_static(), "must be");
417 return (DynamicArchiveHeader*)header();
418 }
419
420 void set_has_platform_or_app_classes(bool v) {
421 header()->set_has_platform_or_app_classes(v);
422 }
423 bool has_platform_or_app_classes() const {
424 return header()->has_platform_or_app_classes();
425 }
426
427 static FileMapInfo* current_info() {
428 CDS_ONLY(return _current_info;)
429 NOT_CDS(return NULL;)
430 }
431
432 static void set_current_info(FileMapInfo* info) {
433 CDS_ONLY(_current_info = info;)
434 }
435
436 static FileMapInfo* dynamic_info() {
437 CDS_ONLY(return _dynamic_archive_info;)
438 NOT_CDS(return NULL;)
439 }
440
441 static void assert_mark(bool check);
442
443 // File manipulation.
444 bool initialize() NOT_CDS_RETURN_(false);
445 bool open_for_read();
446 void open_for_write(const char* path = NULL);
447 void write_header();
448 void write_region(int region, char* base, size_t size,
449 bool read_only, bool allow_exec);
450 char* write_bitmap_region(const CHeapBitMap* ptrmap,
451 GrowableArray<ArchiveHeapOopmapInfo>* closed_oopmaps,
452 GrowableArray<ArchiveHeapOopmapInfo>* open_oopmaps,
453 size_t &size_in_bytes);
454 size_t write_archive_heap_regions(GrowableArray<MemRegion> *heap_mem,
455 GrowableArray<ArchiveHeapOopmapInfo> *oopmaps,
456 int first_region_id, int max_num_regions);
457 void write_bytes(const void* buffer, size_t count);
458 void write_bytes_aligned(const void* buffer, size_t count);
459 size_t read_bytes(void* buffer, size_t count);
460 MapArchiveResult map_regions(int regions[], int num_regions, char* mapped_base_address, ReservedSpace rs);
461 void unmap_regions(int regions[], int num_regions);
462 void map_heap_regions() NOT_CDS_JAVA_HEAP_RETURN;
463 void fixup_mapped_heap_regions() NOT_CDS_JAVA_HEAP_RETURN;
464 void patch_archived_heap_embedded_pointers() NOT_CDS_JAVA_HEAP_RETURN;
465 void patch_archived_heap_embedded_pointers(MemRegion* ranges, int num_ranges,
466 int first_region_idx) NOT_CDS_JAVA_HEAP_RETURN;
467 bool has_heap_regions() NOT_CDS_JAVA_HEAP_RETURN_(false);
468 MemRegion get_heap_regions_range_with_current_oop_encoding_mode() NOT_CDS_JAVA_HEAP_RETURN_(MemRegion());
469 void unmap_region(int i);
470 bool verify_region_checksum(int i);
471 void close();
472 bool is_open() { return _file_open; }
473 ReservedSpace reserve_shared_memory();
474
475 // JVM/TI RedefineClasses() support:
476 // Remap the shared readonly space to shared readwrite, private.
477 bool remap_shared_readonly_as_readwrite();
478
479 // Errors.
480 static void fail_stop(const char *msg, ...) ATTRIBUTE_PRINTF(1, 2);
481 static void fail_continue(const char *msg, ...) ATTRIBUTE_PRINTF(1, 2);
482 static bool memory_mapping_failed() {
483 CDS_ONLY(return _memory_mapping_failed;)
484 NOT_CDS(return false;)
485 }
486 bool is_in_shared_region(const void* p, int idx) NOT_CDS_RETURN_(false);
487
488 // Stop CDS sharing and unmap CDS regions.
489 static void stop_sharing_and_unmap(const char* msg);
490
491 static void allocate_shared_path_table(TRAPS);
492 static void copy_shared_path_table(ClassLoaderData* loader_data, TRAPS);
493 static int add_shared_classpaths(int i, const char* which, ClassPathEntry *cpe, TRAPS);
494 static void check_nonempty_dir_in_shared_path_table();
495 bool validate_shared_path_table();
496 void validate_non_existent_class_paths();
497 static void set_shared_path_table(FileMapInfo* info) {
498 _shared_path_table = info->header()->shared_path_table();
499 }
500 static void update_jar_manifest(ClassPathEntry *cpe, SharedClassPathEntry* ent, TRAPS);
501 static int num_non_existent_class_paths();
502 static void record_non_existent_class_path_entry(const char* path);
503
504 #if INCLUDE_JVMTI
505 static ClassFileStream* open_stream_for_jvmti(InstanceKlass* ik, Handle class_loader, TRAPS);
506 #endif
507
508 static SharedClassPathEntry* shared_path(int index) {
509 return _shared_path_table.path_at(index);
510 }
511
512 static const char* shared_path_name(int index) {
513 assert(index >= 0, "Sanity");
514 return shared_path(index)->name();
515 }
516
517 static int get_number_of_shared_paths() {
518 return _shared_path_table.size();
519 }
520
521 static int get_module_shared_path_index(Symbol* location) NOT_CDS_RETURN_(-1);
522
523 char* region_addr(int idx);
524
525 // The offset of the first core region in the archive, relative to SharedBaseAddress
526 size_t mapping_base_offset() const { return first_core_space()->mapping_offset(); }
527 // The offset of the (exclusive) end of the last core region in this archive, relative to SharedBaseAddress
528 size_t mapping_end_offset() const { return last_core_space()->mapping_end_offset(); }
529
530 char* mapped_base() const { return first_core_space()->mapped_base(); }
531 char* mapped_end() const { return last_core_space()->mapped_end(); }
532
533 // Non-zero if the archive needs to be mapped a non-default location due to ASLR.
534 intx relocation_delta() const {
535 return header()->mapped_base_address() - header()->requested_base_address();
536 }
537
538 FileMapRegion* first_core_space() const;
539 FileMapRegion* last_core_space() const;
540
541 FileMapRegion* space_at(int i) const {
542 return header()->space_at(i);
543 }
544
545 void print(outputStream* st) {
546 header()->print(st);
547 }
548
549 const char* vm_version() {
550 return header()->jvm_ident();
551 }
552
553 private:
554 void seek_to_position(size_t pos);
555 char* skip_first_path_entry(const char* path) NOT_CDS_RETURN_(NULL);
556 int num_paths(const char* path) NOT_CDS_RETURN_(0);
557 GrowableArray<const char*>* create_path_array(const char* path) NOT_CDS_RETURN_(NULL);
558 bool classpath_failure(const char* msg, const char* name) NOT_CDS_RETURN_(false);
559 bool check_paths(int shared_path_start_idx, int num_paths,
560 GrowableArray<const char*>* rp_array) NOT_CDS_RETURN_(false);
561 bool validate_boot_class_paths() NOT_CDS_RETURN_(false);
562 bool validate_app_class_paths(int shared_app_paths_len) NOT_CDS_RETURN_(false);
563 bool map_heap_data(MemRegion **heap_mem, int first, int max, int* num,
564 bool is_open = false) NOT_CDS_JAVA_HEAP_RETURN_(false);
565 bool region_crc_check(char* buf, size_t size, int expected_crc) NOT_CDS_RETURN_(false);
566 void dealloc_archive_heap_regions(MemRegion* regions, int num) NOT_CDS_JAVA_HEAP_RETURN;
567 void map_heap_regions_impl() NOT_CDS_JAVA_HEAP_RETURN;
568 char* map_bitmap_region();
569 MapArchiveResult map_region(int i, intx addr_delta, char* mapped_base_address, ReservedSpace rs);
570 bool read_region(int i, char* base, size_t size);
571 bool relocate_pointers_in_core_regions(intx addr_delta);
572 static size_t set_oopmaps_offset(GrowableArray<ArchiveHeapOopmapInfo> *oopmaps, size_t curr_size);
573 static size_t write_oopmaps(GrowableArray<ArchiveHeapOopmapInfo> *oopmaps, size_t curr_offset, char* buffer);
574
575 // The starting address of spc, as calculated with CompressedOop::decode_non_null()
576 address start_address_as_decoded_with_current_oop_encoding_mode(FileMapRegion* spc) {
577 return decode_start_address(spc, true);
578 }
579
580 // The starting address of spc, as calculated with HeapShared::decode_from_archive()
581 address start_address_as_decoded_from_archive(FileMapRegion* spc) {
582 return decode_start_address(spc, false);
583 }
584
585 address decode_start_address(FileMapRegion* spc, bool with_current_oop_encoding_mode);
586
587 #if INCLUDE_JVMTI
588 static ClassPathEntry** _classpath_entries_for_jvmti;
589 static ClassPathEntry* get_classpath_entry_for_jvmti(int i, TRAPS);
590 #endif
591 };
592
593 #endif // SHARE_CDS_FILEMAP_HPP