1 /*
2 * Copyright (c) 2003, 2023, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #ifndef SHARE_CDS_FILEMAP_HPP
26 #define SHARE_CDS_FILEMAP_HPP
27
28 #include "cds/metaspaceShared.hpp"
29 #include "include/cds.h"
30 #include "logging/logLevel.hpp"
31 #include "memory/allocation.hpp"
32 #include "oops/array.hpp"
33 #include "oops/compressedOops.hpp"
34 #include "utilities/align.hpp"
35
36 // To understand the layout of the CDS archive file:
37 //
38 // java -Xlog:cds+map=info:file=cds.map:none:filesize=0
39 // java -Xlog:cds+map=debug:file=cds.map:none:filesize=0
40 // java -Xlog:cds+map=trace:file=cds.map:none:filesize=0
41
42 static const int JVM_IDENT_MAX = 256;
43
44 class ArchiveHeapInfo;
45 class BitMapView;
46 class CHeapBitMap;
47 class ClassFileStream;
48 class ClassLoaderData;
49 class ClassPathEntry;
50 class outputStream;
51
52 class SharedClassPathEntry : public MetaspaceObj {
53 enum {
54 modules_image_entry,
55 jar_entry,
56 signed_jar_entry,
57 dir_entry,
58 non_existent_entry,
59 unknown_entry
60 };
61
62 void set_name(const char* name, TRAPS);
63
64 u1 _type;
65 bool _is_module_path;
66 bool _from_class_path_attr;
67 time_t _timestamp; // jar timestamp, 0 if is directory, modules image or other
68 int64_t _filesize; // jar/jimage file size, -1 if is directory, -2 if other
69 Array<char>* _name;
70 Array<u1>* _manifest;
71
72 public:
73 SharedClassPathEntry() : _type(0), _is_module_path(false),
74 _from_class_path_attr(false), _timestamp(0),
75 _filesize(0), _name(nullptr), _manifest(nullptr) {}
76 static int size() {
77 static_assert(is_aligned(sizeof(SharedClassPathEntry), wordSize), "must be");
78 return (int)(sizeof(SharedClassPathEntry) / wordSize);
79 }
80 void init(bool is_modules_image, bool is_module_path, ClassPathEntry* cpe, TRAPS);
81 void init_as_non_existent(const char* path, TRAPS);
82 void metaspace_pointers_do(MetaspaceClosure* it);
83 MetaspaceObj::Type type() const { return SharedClassPathEntryType; }
84 bool validate(bool is_class_path = true) const;
85
86 // The _timestamp only gets set for jar files.
87 bool has_timestamp() const {
88 return _timestamp != 0;
89 }
90 bool is_dir() const { return _type == dir_entry; }
91 bool is_modules_image() const { return _type == modules_image_entry; }
92 bool is_jar() const { return _type == jar_entry; }
93 bool is_signed() const { return _type == signed_jar_entry; }
94 void set_is_signed() {
95 _type = signed_jar_entry;
96 }
97 bool from_class_path_attr() { return _from_class_path_attr; }
98 time_t timestamp() const { return _timestamp; }
99 const char* name() const;
100 const char* manifest() const {
101 return (_manifest == nullptr) ? nullptr : (const char*)_manifest->data();
102 }
103 int manifest_size() const {
104 return (_manifest == nullptr) ? 0 : _manifest->length();
105 }
106 void set_manifest(Array<u1>* manifest) {
107 _manifest = manifest;
108 }
109 bool check_non_existent() const;
110 void copy_from(SharedClassPathEntry* ent, ClassLoaderData* loader_data, TRAPS);
111 bool in_named_module() {
112 return is_modules_image() || // modules image doesn't contain unnamed modules
113 _is_module_path; // module path doesn't contain unnamed modules
114 }
115 };
116
117 class SharedPathTable {
118 Array<SharedClassPathEntry*>* _entries;
119 public:
120 SharedPathTable() : _entries(nullptr) {}
121 SharedPathTable(Array<SharedClassPathEntry*>* entries) : _entries(entries) {}
122
123 void dumptime_init(ClassLoaderData* loader_data, TRAPS);
124 void metaspace_pointers_do(MetaspaceClosure* it);
125
126 int size() {
127 return _entries == nullptr ? 0 : _entries->length();
128 }
129 SharedClassPathEntry* path_at(int index) {
130 return _entries->at(index);
131 }
132 Array<SharedClassPathEntry*>* table() {return _entries;}
133 void set_table(Array<SharedClassPathEntry*>* table) {_entries = table;}
134 };
135
136
137 class FileMapRegion: private CDSFileMapRegion {
138 BitMapView bitmap_view(bool is_oopmap);
139 public:
140 void assert_is_heap_region() const {
141 assert(_is_heap_region, "must be heap region");
142 }
143 void assert_is_not_heap_region() const {
144 assert(!_is_heap_region, "must not be heap region");
145 }
146
147 static FileMapRegion* cast(CDSFileMapRegion* p) {
148 return (FileMapRegion*)p;
149 }
150
151 // Accessors
152 int crc() const { return _crc; }
153 size_t file_offset() const { return _file_offset; }
154 size_t mapping_offset() const { return _mapping_offset; }
155 size_t mapping_end_offset() const { return _mapping_offset + used_aligned(); }
156 size_t used() const { return _used; }
157 size_t used_aligned() const; // aligned up to MetaspaceShared::core_region_alignment()
158 char* mapped_base() const { return _mapped_base; }
159 char* mapped_end() const { return mapped_base() + used_aligned(); }
160 bool read_only() const { return _read_only != 0; }
161 bool allow_exec() const { return _allow_exec != 0; }
162 bool mapped_from_file() const { return _mapped_from_file != 0; }
163 size_t oopmap_offset() const { assert_is_heap_region(); return _oopmap_offset; }
164 size_t oopmap_size_in_bits() const { assert_is_heap_region(); return _oopmap_size_in_bits; }
165
166 void set_file_offset(size_t s) { _file_offset = s; }
167 void set_read_only(bool v) { _read_only = v; }
168 void set_mapped_base(char* p) { _mapped_base = p; }
169 void set_mapped_from_file(bool v) { _mapped_from_file = v; }
170 void init(int region_index, size_t mapping_offset, size_t size, bool read_only,
171 bool allow_exec, int crc);
172 void init_oopmap(size_t offset, size_t size_in_bits);
173 void init_ptrmap(size_t offset, size_t size_in_bits);
174 BitMapView oopmap_view();
175 BitMapView ptrmap_view();
176 bool has_ptrmap() { return _ptrmap_size_in_bits != 0; }
177
178 bool check_region_crc() const;
179 void print(outputStream* st, int region_index);
180 };
181
182 class FileMapHeader: private CDSFileMapHeaderBase {
183 friend class CDSConstants;
184 friend class VMStructs;
185
186 private:
187 // The following fields record the states of the VM during dump time.
188 // They are compared with the runtime states to see if the archive
189 // can be used.
190 size_t _core_region_alignment; // how shared archive should be aligned
191 int _obj_alignment; // value of ObjectAlignmentInBytes
192 address _narrow_oop_base; // compressed oop encoding base
193 int _narrow_oop_shift; // compressed oop encoding shift
194 bool _compact_strings; // value of CompactStrings
195 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 address _heap_begin; // heap begin at dump time.
203 address _heap_end; // heap end at dump time.
204 bool _has_non_jar_in_classpath; // non-jar file entry exists in classpath
205 unsigned int _common_app_classpath_prefix_size; // size of the common prefix of app class paths
206 // 0 if no common prefix exists
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 // The following is a table of all the boot/app/module path entries that were used
214 // during dumping. At run time, we validate these entries according to their
215 // SharedClassPathEntry::_type. See:
216 // check_nonempty_dir_in_shared_path_table()
217 // validate_shared_path_table()
218 // validate_non_existent_class_paths()
219 size_t _shared_path_table_offset;
220
221 jshort _app_class_paths_start_index; // Index of first app classpath entry
222 jshort _app_module_paths_start_index; // Index of first module path entry
223 jshort _num_module_paths; // number of module path entries
224 jshort _max_used_path_index; // max path index referenced during CDS dump
225 bool _verify_local; // BytecodeVerificationLocal setting
226 bool _verify_remote; // BytecodeVerificationRemote setting
227 bool _has_platform_or_app_classes; // Archive contains app classes
228 char* _requested_base_address; // Archive relocation is not necessary if we map with this base address.
229 char* _mapped_base_address; // Actual base address where archive is mapped.
230
231 bool _allow_archiving_with_java_agent; // setting of the AllowArchivingWithJavaAgent option
232 bool _use_optimized_module_handling;// No module-relation VM options were specified, so we can skip
233 // some expensive operations.
234 bool _use_full_module_graph; // Can we use the full archived module graph?
235 size_t _ptrmap_size_in_bits; // Size of pointer relocation bitmap
236 char* from_mapped_offset(size_t offset) const {
237 return mapped_base_address() + offset;
238 }
239 void set_as_offset(char* p, size_t *offset);
240 public:
241 // Accessors -- fields declared in GenericCDSFileMapHeader
242 unsigned int magic() const { return _generic_header._magic; }
243 int crc() const { return _generic_header._crc; }
244 int version() const { return _generic_header._version; }
245 unsigned int header_size() const { return _generic_header._header_size; }
246 unsigned int base_archive_name_offset() const { return _generic_header._base_archive_name_offset; }
247 unsigned int base_archive_name_size() const { return _generic_header._base_archive_name_size; }
248 unsigned int common_app_classpath_prefix_size() const { return _common_app_classpath_prefix_size; }
249
250 void set_magic(unsigned int m) { _generic_header._magic = m; }
251 void set_crc(int crc_value) { _generic_header._crc = crc_value; }
252 void set_version(int v) { _generic_header._version = v; }
253 void set_header_size(unsigned int s) { _generic_header._header_size = s; }
254 void set_base_archive_name_offset(unsigned int s) { _generic_header._base_archive_name_offset = s; }
255 void set_base_archive_name_size(unsigned int s) { _generic_header._base_archive_name_size = s; }
256 void set_common_app_classpath_prefix_size(unsigned int s) { _common_app_classpath_prefix_size = s; }
257
258 size_t core_region_alignment() const { return _core_region_alignment; }
259 int obj_alignment() const { return _obj_alignment; }
260 address narrow_oop_base() const { return _narrow_oop_base; }
261 int narrow_oop_shift() const { return _narrow_oop_shift; }
262 bool compact_strings() const { return _compact_strings; }
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 const char* jvm_ident() const { return _jvm_ident; }
272 char* requested_base_address() const { return _requested_base_address; }
273 char* mapped_base_address() const { return _mapped_base_address; }
274 bool has_platform_or_app_classes() const { return _has_platform_or_app_classes; }
275 bool has_non_jar_in_classpath() const { return _has_non_jar_in_classpath; }
276 size_t ptrmap_size_in_bits() const { return _ptrmap_size_in_bits; }
277 bool compressed_oops() const { return _compressed_oops; }
278 bool compressed_class_pointers() const { return _compressed_class_ptrs; }
279 // FIXME: These should really return int
280 jshort max_used_path_index() const { return _max_used_path_index; }
281 jshort app_module_paths_start_index() const { return _app_module_paths_start_index; }
282 jshort app_class_paths_start_index() const { return _app_class_paths_start_index; }
283 jshort num_module_paths() const { return _num_module_paths; }
284
285 void set_has_platform_or_app_classes(bool v) { _has_platform_or_app_classes = v; }
286 void set_cloned_vtables(char* p) { set_as_offset(p, &_cloned_vtables_offset); }
287 void set_serialized_data(char* p) { set_as_offset(p, &_serialized_data_offset); }
288 void set_ptrmap_size_in_bits(size_t s) { _ptrmap_size_in_bits = s; }
289 void set_mapped_base_address(char* p) { _mapped_base_address = p; }
290 void copy_base_archive_name(const char* name);
291
292 void set_shared_path_table(SharedPathTable table) {
293 set_as_offset((char*)table.table(), &_shared_path_table_offset);
294 }
295
296 void set_requested_base(char* b) {
297 _requested_base_address = b;
298 _mapped_base_address = 0;
299 }
300
301 SharedPathTable shared_path_table() const {
302 return SharedPathTable((Array<SharedClassPathEntry*>*)
303 from_mapped_offset(_shared_path_table_offset));
304 }
305
306 bool validate();
307 int compute_crc();
308
309 FileMapRegion* region_at(int i) {
310 assert(is_valid_region(i), "invalid region");
311 return FileMapRegion::cast(&_regions[i]);
312 }
313
314 void populate(FileMapInfo *info, size_t core_region_alignment, size_t header_size,
315 size_t base_archive_name_size, size_t base_archive_name_offset,
316 size_t common_app_classpath_size);
317 static bool is_valid_region(int region) {
318 return (0 <= region && region < NUM_CDS_REGIONS);
319 }
320
321 void print(outputStream* st);
322 };
323
324 class FileMapInfo : public CHeapObj<mtInternal> {
325 private:
326 friend class ManifestStream;
327 friend class VMStructs;
328 friend class ArchiveBuilder;
329 friend class CDSOffsets;
330 friend class FileMapHeader;
331
332 bool _is_static;
333 bool _file_open;
334 bool _is_mapped;
335 int _fd;
336 size_t _file_offset;
337 const char* _full_path;
338 const char* _base_archive_name;
339 FileMapHeader* _header;
340
341 static SharedPathTable _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 public:
355 FileMapHeader *header() const { return _header; }
356 static bool get_base_archive_name_from_header(const char* archive_name,
357 char** base_archive_name);
358 static SharedPathTable shared_path_table() {
359 return _shared_path_table;
360 }
361
362 bool init_from_file(int fd);
363 static void metaspace_pointers_do(MetaspaceClosure* it) {
364 _shared_path_table.metaspace_pointers_do(it);
365 }
366
367 void log_paths(const char* msg, int start_idx, int end_idx);
368
369 FileMapInfo(const char* full_apth, bool is_static);
370 ~FileMapInfo();
371
372 // Accessors
373 int compute_header_crc() const { return header()->compute_crc(); }
374 void set_header_crc(int crc) { header()->set_crc(crc); }
375 int region_crc(int i) const { return region_at(i)->crc(); }
376 void populate_header(size_t core_region_alignment);
377 bool validate_header();
378 void invalidate();
379 int crc() const { return header()->crc(); }
380 int version() const { return header()->version(); }
381 unsigned int magic() const { return header()->magic(); }
382 address narrow_oop_base() const { return header()->narrow_oop_base(); }
383 int narrow_oop_shift() const { return header()->narrow_oop_shift(); }
384 uintx max_heap_size() const { return header()->max_heap_size(); }
385 address narrow_klass_base() const { return header()->narrow_klass_base(); }
386 int narrow_klass_shift() const { return header()->narrow_klass_shift(); }
387 size_t core_region_alignment() const { return header()->core_region_alignment(); }
388
389 CompressedOops::Mode narrow_oop_mode() const { return header()->narrow_oop_mode(); }
390 jshort app_module_paths_start_index() const { return header()->app_module_paths_start_index(); }
391 jshort app_class_paths_start_index() const { return header()->app_class_paths_start_index(); }
392
393 char* cloned_vtables() const { return header()->cloned_vtables(); }
394 void set_cloned_vtables(char* p) const { header()->set_cloned_vtables(p); }
395 char* serialized_data() const { return header()->serialized_data(); }
396 void set_serialized_data(char* p) const { header()->set_serialized_data(p); }
397
398 bool is_file_position_aligned() const;
399 void align_file_position();
400
401 bool is_static() const { return _is_static; }
402 bool is_mapped() const { return _is_mapped; }
403 void set_is_mapped(bool v) { _is_mapped = v; }
404 const char* full_path() const { return _full_path; }
405
406 void set_requested_base(char* b) { header()->set_requested_base(b); }
407 char* requested_base_address() const { return header()->requested_base_address(); }
408
409 class DynamicArchiveHeader* dynamic_header() const {
410 assert(!is_static(), "must be");
411 return (DynamicArchiveHeader*)header();
412 }
413
414 void set_has_platform_or_app_classes(bool v) {
415 header()->set_has_platform_or_app_classes(v);
416 }
417 bool has_platform_or_app_classes() const {
418 return header()->has_platform_or_app_classes();
419 }
420
421 static FileMapInfo* current_info() {
422 CDS_ONLY(return _current_info;)
423 NOT_CDS(return nullptr;)
424 }
425
426 static void set_current_info(FileMapInfo* info) {
427 CDS_ONLY(_current_info = info;)
428 }
429
430 static FileMapInfo* dynamic_info() {
431 CDS_ONLY(return _dynamic_archive_info;)
432 NOT_CDS(return nullptr;)
433 }
434
435 static void assert_mark(bool check);
436
437 // File manipulation.
438 bool initialize() NOT_CDS_RETURN_(false);
439 bool open_for_read();
440 void open_for_write();
441 void write_header();
442 void write_region(int region, char* base, size_t size,
443 bool read_only, bool allow_exec);
444 char* write_bitmap_region(const CHeapBitMap* ptrmap, ArchiveHeapInfo* heap_info,
445 size_t &size_in_bytes);
446 size_t write_heap_region(ArchiveHeapInfo* heap_info);
447 void write_bytes(const void* buffer, size_t count);
448 void write_bytes_aligned(const void* buffer, size_t count);
449 size_t read_bytes(void* buffer, size_t count);
450 static size_t readonly_total();
451 MapArchiveResult map_regions(int regions[], int num_regions, char* mapped_base_address, ReservedSpace rs);
452 void unmap_regions(int regions[], int num_regions);
453 void map_or_load_heap_region() NOT_CDS_JAVA_HEAP_RETURN;
454 void fixup_mapped_heap_region() NOT_CDS_JAVA_HEAP_RETURN;
455 void patch_heap_embedded_pointers() NOT_CDS_JAVA_HEAP_RETURN;
456 bool has_heap_region() NOT_CDS_JAVA_HEAP_RETURN_(false);
457 MemRegion get_heap_region_requested_range() NOT_CDS_JAVA_HEAP_RETURN_(MemRegion());
458 bool read_region(int i, char* base, size_t size, bool do_commit);
459 char* map_bitmap_region();
460 void unmap_region(int i);
461 void close();
462 bool is_open() { return _file_open; }
463 ReservedSpace reserve_shared_memory();
464
465 // JVM/TI RedefineClasses() support:
466 // Remap the shared readonly space to shared readwrite, private.
467 bool remap_shared_readonly_as_readwrite();
468
469 static bool memory_mapping_failed() {
470 CDS_ONLY(return _memory_mapping_failed;)
471 NOT_CDS(return false;)
472 }
473
474 static void allocate_shared_path_table(TRAPS);
475 static int add_shared_classpaths(int i, const char* which, ClassPathEntry *cpe, TRAPS);
476 static void check_nonempty_dir_in_shared_path_table();
477 bool check_module_paths();
478 bool validate_shared_path_table();
479 void validate_non_existent_class_paths();
480 static void set_shared_path_table(FileMapInfo* info) {
481 _shared_path_table = info->header()->shared_path_table();
482 }
483 static void update_jar_manifest(ClassPathEntry *cpe, SharedClassPathEntry* ent, TRAPS);
484 static int num_non_existent_class_paths();
485 static void record_non_existent_class_path_entry(const char* path);
486
487 #if INCLUDE_JVMTI
488 // Caller needs a ResourceMark because parts of the returned cfs are resource-allocated.
489 static ClassFileStream* open_stream_for_jvmti(InstanceKlass* ik, Handle class_loader, TRAPS);
490 #endif
491
492 static SharedClassPathEntry* shared_path(int index) {
493 return _shared_path_table.path_at(index);
494 }
495
496 static const char* shared_path_name(int index) {
497 assert(index >= 0, "Sanity");
498 return shared_path(index)->name();
499 }
500
501 static int get_number_of_shared_paths() {
502 return _shared_path_table.size();
503 }
504
505 static int get_module_shared_path_index(Symbol* location) NOT_CDS_RETURN_(-1);
506
507 // The offset of the first core region in the archive, relative to SharedBaseAddress
508 size_t mapping_base_offset() const { return first_core_region()->mapping_offset(); }
509 // The offset of the (exclusive) end of the last core region in this archive, relative to SharedBaseAddress
510 size_t mapping_end_offset() const { return last_core_region()->mapping_end_offset(); }
511
512 char* mapped_base() const { return first_core_region()->mapped_base(); }
513 char* mapped_end() const { return last_core_region()->mapped_end(); }
514
515 // Non-zero if the archive needs to be mapped a non-default location due to ASLR.
516 intx relocation_delta() const {
517 return header()->mapped_base_address() - header()->requested_base_address();
518 }
519
520 FileMapRegion* first_core_region() const;
521 FileMapRegion* last_core_region() const;
522
523 FileMapRegion* region_at(int i) const {
524 return header()->region_at(i);
525 }
526
527 void print(outputStream* st) const;
528
529 const char* vm_version() {
530 return header()->jvm_ident();
531 }
532
533 private:
534 void seek_to_position(size_t pos);
535 char* skip_first_path_entry(const char* path) NOT_CDS_RETURN_(nullptr);
536 int num_paths(const char* path) NOT_CDS_RETURN_(0);
537 bool check_paths_existence(const char* paths) NOT_CDS_RETURN_(false);
538 GrowableArray<const char*>* create_dumptime_app_classpath_array() NOT_CDS_RETURN_(nullptr);
539 GrowableArray<const char*>* create_path_array(const char* path) NOT_CDS_RETURN_(nullptr);
540 bool classpath_failure(const char* msg, const char* name) NOT_CDS_RETURN_(false);
541 unsigned int longest_common_app_classpath_prefix_len(int num_paths,
542 GrowableArray<const char*>* rp_array)
543 NOT_CDS_RETURN_(0);
544 bool check_paths(int shared_path_start_idx, int num_paths,
545 GrowableArray<const char*>* rp_array,
546 unsigned int dumptime_prefix_len,
547 unsigned int runtime_prefix_len) NOT_CDS_RETURN_(false);
548 bool validate_boot_class_paths() NOT_CDS_RETURN_(false);
549 bool validate_app_class_paths(int shared_app_paths_len) NOT_CDS_RETURN_(false);
550 bool map_heap_region_impl() NOT_CDS_JAVA_HEAP_RETURN_(false);
551 void dealloc_heap_region() NOT_CDS_JAVA_HEAP_RETURN;
552 bool can_use_heap_region();
553 bool load_heap_region() NOT_CDS_JAVA_HEAP_RETURN_(false);
554 bool map_heap_region() NOT_CDS_JAVA_HEAP_RETURN_(false);
555 void init_heap_region_relocation();
556 MapArchiveResult map_region(int i, intx addr_delta, char* mapped_base_address, ReservedSpace rs);
557 bool relocate_pointers_in_core_regions(intx addr_delta);
558
559 static MemRegion _mapped_heap_memregion;
560
561 public:
562 address heap_region_dumptime_address() NOT_CDS_JAVA_HEAP_RETURN_(nullptr);
563 address heap_region_requested_address() NOT_CDS_JAVA_HEAP_RETURN_(nullptr);
564 address heap_region_mapped_address() NOT_CDS_JAVA_HEAP_RETURN_(nullptr);
565 narrowOop encoded_heap_region_dumptime_address();
566
567 private:
568
569 #if INCLUDE_JVMTI
570 static ClassPathEntry** _classpath_entries_for_jvmti;
571 static ClassPathEntry* get_classpath_entry_for_jvmti(int i, TRAPS);
572 #endif
573 };
574
575 #endif // SHARE_CDS_FILEMAP_HPP