1 /*
2 * Copyright (c) 2012, 2024, 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 #include "precompiled.hpp"
26 #include "cds/archiveBuilder.hpp"
27 #include "cds/archiveHeapLoader.hpp"
28 #include "cds/archiveHeapWriter.hpp"
29 #include "cds/cds_globals.hpp"
30 #include "cds/cdsConfig.hpp"
31 #include "cds/cdsProtectionDomain.hpp"
32 #include "cds/cds_globals.hpp"
33 #include "cds/classListParser.hpp"
34 #include "cds/classListWriter.hpp"
35 #include "cds/classPrelinker.hpp"
36 #include "cds/cppVtables.hpp"
37 #include "cds/dumpAllocStats.hpp"
38 #include "cds/dynamicArchive.hpp"
39 #include "cds/filemap.hpp"
40 #include "cds/heapShared.hpp"
41 #include "cds/lambdaFormInvokers.hpp"
42 #include "cds/metaspaceShared.hpp"
43 #include "classfile/classLoaderDataGraph.hpp"
44 #include "classfile/classLoaderDataShared.hpp"
45 #include "classfile/classLoaderExt.hpp"
46 #include "classfile/javaClasses.inline.hpp"
47 #include "classfile/loaderConstraints.hpp"
48 #include "classfile/modules.hpp"
49 #include "classfile/placeholders.hpp"
50 #include "classfile/stringTable.hpp"
51 #include "classfile/symbolTable.hpp"
52 #include "classfile/systemDictionary.hpp"
53 #include "classfile/systemDictionaryShared.hpp"
54 #include "classfile/vmClasses.hpp"
55 #include "classfile/vmSymbols.hpp"
56 #include "code/codeCache.hpp"
57 #include "gc/shared/gcVMOperations.hpp"
58 #include "interpreter/bytecodeStream.hpp"
59 #include "interpreter/bytecodes.hpp"
60 #include "jvm_io.h"
61 #include "logging/log.hpp"
62 #include "logging/logMessage.hpp"
63 #include "logging/logStream.hpp"
64 #include "memory/metaspace.hpp"
65 #include "memory/metaspaceClosure.hpp"
66 #include "memory/resourceArea.hpp"
67 #include "memory/universe.hpp"
68 #include "nmt/memTracker.hpp"
69 #include "oops/compressedKlass.hpp"
70 #include "oops/instanceMirrorKlass.hpp"
71 #include "oops/klass.inline.hpp"
72 #include "oops/objArrayOop.hpp"
73 #include "oops/oop.inline.hpp"
74 #include "oops/oopHandle.hpp"
75 #include "prims/jvmtiExport.hpp"
76 #include "runtime/arguments.hpp"
77 #include "runtime/globals.hpp"
78 #include "runtime/globals_extension.hpp"
79 #include "runtime/handles.inline.hpp"
80 #include "runtime/javaCalls.hpp"
81 #include "runtime/os.inline.hpp"
82 #include "runtime/safepointVerifiers.hpp"
83 #include "runtime/sharedRuntime.hpp"
84 #include "runtime/vmOperations.hpp"
85 #include "runtime/vmThread.hpp"
86 #include "sanitizers/leak.hpp"
87 #include "utilities/align.hpp"
88 #include "utilities/bitMap.inline.hpp"
89 #include "utilities/defaultStream.hpp"
90 #include "utilities/ostream.hpp"
91 #include "utilities/resourceHash.hpp"
92
93 ReservedSpace MetaspaceShared::_symbol_rs;
94 VirtualSpace MetaspaceShared::_symbol_vs;
95 bool MetaspaceShared::_archive_loading_failed = false;
96 bool MetaspaceShared::_remapped_readwrite = false;
97 void* MetaspaceShared::_shared_metaspace_static_top = nullptr;
98 intx MetaspaceShared::_relocation_delta;
99 char* MetaspaceShared::_requested_base_address;
100 bool MetaspaceShared::_use_optimized_module_handling = true;
101
102 // The CDS archive is divided into the following regions:
103 // rw - read-write metadata
104 // ro - read-only metadata and read-only tables
105 // hp - heap region
106 // bm - bitmap for relocating the above 7 regions.
107 //
108 // The rw and ro regions are linearly allocated, in the order of rw->ro.
109 // These regions are aligned with MetaspaceShared::core_region_alignment().
110 //
111 // These 2 regions are populated in the following steps:
112 // [0] All classes are loaded in MetaspaceShared::preload_classes(). All metadata are
113 // temporarily allocated outside of the shared regions.
114 // [1] We enter a safepoint and allocate a buffer for the rw/ro regions.
115 // [2] C++ vtables are copied into the rw region.
116 // [3] ArchiveBuilder copies RW metadata into the rw region.
117 // [4] ArchiveBuilder copies RO metadata into the ro region.
118 // [5] SymbolTable, StringTable, SystemDictionary, and a few other read-only data
119 // are copied into the ro region as read-only tables.
120 //
121 // The heap region is populated by HeapShared::archive_objects.
122 //
123 // The bitmap region is used to relocate the ro/rw/hp regions.
124
125 static DumpRegion _symbol_region("symbols");
126
127 char* MetaspaceShared::symbol_space_alloc(size_t num_bytes) {
128 return _symbol_region.allocate(num_bytes);
129 }
130
131 // os::vm_allocation_granularity() is usually 4K for most OSes. However, some platforms
132 // such as linux-aarch64 and macos-x64 ...
133 // it can be either 4K or 64K and on macos-aarch64 it is 16K. To generate archives that are
134 // compatible for both settings, an alternative cds core region alignment can be enabled
135 // at building time:
136 // --enable-compactible-cds-alignment
137 // Upon successful configuration, the compactible alignment then can be defined in:
138 // os_linux_aarch64.cpp
139 // os_bsd_x86.cpp
140 size_t MetaspaceShared::core_region_alignment() {
141 return os::cds_core_region_alignment();
142 }
143
144 static bool shared_base_valid(char* shared_base) {
145 // We check user input for SharedBaseAddress at dump time. We must weed out values
146 // we already know to be invalid later.
147
148 // At CDS runtime, "shared_base" will be the (attempted) mapping start. It will also
149 // be the encoding base, since the the headers of archived base objects (and with Lilliput,
150 // the prototype mark words) carry pre-computed narrow Klass IDs that refer to the mapping
151 // start as base.
152 //
153 // Therefore, "shared_base" must be later usable as encoding base.
154 return AARCH64_ONLY(is_aligned(shared_base, 4 * G)) NOT_AARCH64(true);
155 }
156
157 class DumpClassListCLDClosure : public CLDClosure {
158 static const int INITIAL_TABLE_SIZE = 1987;
159 static const int MAX_TABLE_SIZE = 61333;
160
161 fileStream *_stream;
162 ResizeableResourceHashtable<InstanceKlass*, bool,
163 AnyObj::C_HEAP, mtClassShared> _dumped_classes;
164
165 void dump(InstanceKlass* ik) {
166 bool created;
167 _dumped_classes.put_if_absent(ik, &created);
168 if (!created) {
169 return;
170 }
171 if (_dumped_classes.maybe_grow()) {
172 log_info(cds, hashtables)("Expanded _dumped_classes table to %d", _dumped_classes.table_size());
173 }
174 if (ik->java_super()) {
175 dump(ik->java_super());
176 }
177 Array<InstanceKlass*>* interfaces = ik->local_interfaces();
178 int len = interfaces->length();
179 for (int i = 0; i < len; i++) {
180 dump(interfaces->at(i));
181 }
182 ClassListWriter::write_to_stream(ik, _stream);
183 }
184
185 public:
186 DumpClassListCLDClosure(fileStream* f)
187 : CLDClosure(), _dumped_classes(INITIAL_TABLE_SIZE, MAX_TABLE_SIZE) {
188 _stream = f;
189 }
190
191 void do_cld(ClassLoaderData* cld) {
192 for (Klass* klass = cld->klasses(); klass != nullptr; klass = klass->next_link()) {
193 if (klass->is_instance_klass()) {
194 dump(InstanceKlass::cast(klass));
195 }
196 }
197 }
198 };
199
200 void MetaspaceShared::dump_loaded_classes(const char* file_name, TRAPS) {
201 fileStream stream(file_name, "w");
202 if (stream.is_open()) {
203 MutexLocker lock(ClassLoaderDataGraph_lock);
204 MutexLocker lock2(ClassListFile_lock, Mutex::_no_safepoint_check_flag);
205 DumpClassListCLDClosure collect_classes(&stream);
206 ClassLoaderDataGraph::loaded_cld_do(&collect_classes);
207 } else {
208 THROW_MSG(vmSymbols::java_io_IOException(), "Failed to open file");
209 }
210 }
211
212 static bool shared_base_too_high(char* specified_base, char* aligned_base, size_t cds_max) {
213 if (specified_base != nullptr && aligned_base < specified_base) {
214 // SharedBaseAddress is very high (e.g., 0xffffffffffffff00) so
215 // align_up(SharedBaseAddress, MetaspaceShared::core_region_alignment()) has wrapped around.
216 return true;
217 }
218 if (max_uintx - uintx(aligned_base) < uintx(cds_max)) {
219 // The end of the archive will wrap around
220 return true;
221 }
222
223 return false;
224 }
225
226 static char* compute_shared_base(size_t cds_max) {
227 char* specified_base = (char*)SharedBaseAddress;
228 char* aligned_base = align_up(specified_base, MetaspaceShared::core_region_alignment());
229 if (UseCompressedClassPointers) {
230 aligned_base = align_up(specified_base, Metaspace::reserve_alignment());
231 }
232
233 if (aligned_base != specified_base) {
234 log_info(cds)("SharedBaseAddress (" INTPTR_FORMAT ") aligned up to " INTPTR_FORMAT,
235 p2i(specified_base), p2i(aligned_base));
236 }
237
238 const char* err = nullptr;
239 if (shared_base_too_high(specified_base, aligned_base, cds_max)) {
240 err = "too high";
241 } else if (!shared_base_valid(aligned_base)) {
242 err = "invalid for this platform";
243 } else {
244 return aligned_base;
245 }
246
247 log_warning(cds)("SharedBaseAddress (" INTPTR_FORMAT ") is %s. Reverted to " INTPTR_FORMAT,
248 p2i((void*)SharedBaseAddress), err,
249 p2i((void*)Arguments::default_SharedBaseAddress()));
250
251 specified_base = (char*)Arguments::default_SharedBaseAddress();
252 aligned_base = align_up(specified_base, MetaspaceShared::core_region_alignment());
253
254 // Make sure the default value of SharedBaseAddress specified in globals.hpp is sane.
255 assert(!shared_base_too_high(specified_base, aligned_base, cds_max), "Sanity");
256 assert(shared_base_valid(aligned_base), "Sanity");
257 return aligned_base;
258 }
259
260 void MetaspaceShared::initialize_for_static_dump() {
261 assert(CDSConfig::is_dumping_static_archive(), "sanity");
262 log_info(cds)("Core region alignment: " SIZE_FORMAT, core_region_alignment());
263 // The max allowed size for CDS archive. We use this to limit SharedBaseAddress
264 // to avoid address space wrap around.
265 size_t cds_max;
266 const size_t reserve_alignment = core_region_alignment();
267
268 #ifdef _LP64
269 const uint64_t UnscaledClassSpaceMax = (uint64_t(max_juint) + 1);
270 cds_max = align_down(UnscaledClassSpaceMax, reserve_alignment);
271 #else
272 // We don't support archives larger than 256MB on 32-bit due to limited
273 // virtual address space.
274 cds_max = align_down(256*M, reserve_alignment);
275 #endif
276
277 _requested_base_address = compute_shared_base(cds_max);
278 SharedBaseAddress = (size_t)_requested_base_address;
279
280 size_t symbol_rs_size = LP64_ONLY(3 * G) NOT_LP64(128 * M);
281 _symbol_rs = ReservedSpace(symbol_rs_size);
282 if (!_symbol_rs.is_reserved()) {
283 log_error(cds)("Unable to reserve memory for symbols: " SIZE_FORMAT " bytes.", symbol_rs_size);
284 MetaspaceShared::unrecoverable_writing_error();
285 }
286 _symbol_region.init(&_symbol_rs, &_symbol_vs);
287 }
288
289 // Called by universe_post_init()
290 void MetaspaceShared::post_initialize(TRAPS) {
291 if (CDSConfig::is_using_archive()) {
292 int size = FileMapInfo::get_number_of_shared_paths();
293 if (size > 0) {
294 CDSProtectionDomain::allocate_shared_data_arrays(size, CHECK);
295 if (!CDSConfig::is_dumping_dynamic_archive()) {
296 FileMapInfo* info;
297 if (FileMapInfo::dynamic_info() == nullptr) {
298 info = FileMapInfo::current_info();
299 } else {
300 info = FileMapInfo::dynamic_info();
301 }
302 ClassLoaderExt::init_paths_start_index(info->app_class_paths_start_index());
303 ClassLoaderExt::init_app_module_paths_start_index(info->app_module_paths_start_index());
304 ClassLoaderExt::init_num_module_paths(info->header()->num_module_paths());
305 }
306 }
307 }
308 }
309
310 static GrowableArrayCHeap<OopHandle, mtClassShared>* _extra_interned_strings = nullptr;
311 static GrowableArrayCHeap<Symbol*, mtClassShared>* _extra_symbols = nullptr;
312
313 void MetaspaceShared::read_extra_data(JavaThread* current, const char* filename) {
314 _extra_interned_strings = new GrowableArrayCHeap<OopHandle, mtClassShared>(10000);
315 _extra_symbols = new GrowableArrayCHeap<Symbol*, mtClassShared>(1000);
316
317 HashtableTextDump reader(filename);
318 reader.check_version("VERSION: 1.0");
319
320 while (reader.remain() > 0) {
321 int utf8_length;
322 int prefix_type = reader.scan_prefix(&utf8_length);
323 ResourceMark rm(current);
324 if (utf8_length == 0x7fffffff) {
325 // buf_len will overflown 32-bit value.
326 log_error(cds)("string length too large: %d", utf8_length);
327 MetaspaceShared::unrecoverable_loading_error();
328 }
329 int buf_len = utf8_length+1;
330 char* utf8_buffer = NEW_RESOURCE_ARRAY(char, buf_len);
331 reader.get_utf8(utf8_buffer, utf8_length);
332 utf8_buffer[utf8_length] = '\0';
333
334 if (prefix_type == HashtableTextDump::SymbolPrefix) {
335 _extra_symbols->append(SymbolTable::new_permanent_symbol(utf8_buffer));
336 } else{
337 assert(prefix_type == HashtableTextDump::StringPrefix, "Sanity");
338 ExceptionMark em(current);
339 JavaThread* THREAD = current; // For exception macros.
340 oop str = StringTable::intern(utf8_buffer, THREAD);
341
342 if (HAS_PENDING_EXCEPTION) {
343 log_warning(cds, heap)("[line %d] extra interned string allocation failed; size too large: %d",
344 reader.last_line_no(), utf8_length);
345 CLEAR_PENDING_EXCEPTION;
346 } else {
347 #if INCLUDE_CDS_JAVA_HEAP
348 if (ArchiveHeapWriter::is_string_too_large_to_archive(str)) {
349 log_warning(cds, heap)("[line %d] extra interned string ignored; size too large: %d",
350 reader.last_line_no(), utf8_length);
351 continue;
352 }
353 // Make sure this string is included in the dumped interned string table.
354 assert(str != nullptr, "must succeed");
355 _extra_interned_strings->append(OopHandle(Universe::vm_global(), str));
356 #endif
357 }
358 }
359 }
360 }
361
362 // Read/write a data stream for restoring/preserving metadata pointers and
363 // miscellaneous data from/to the shared archive file.
364
365 void MetaspaceShared::serialize(SerializeClosure* soc) {
366 int tag = 0;
367 soc->do_tag(--tag);
368
369 // Verify the sizes of various metadata in the system.
370 soc->do_tag(sizeof(Method));
371 soc->do_tag(sizeof(ConstMethod));
372 soc->do_tag(arrayOopDesc::base_offset_in_bytes(T_BYTE));
373 soc->do_tag(sizeof(ConstantPool));
374 soc->do_tag(sizeof(ConstantPoolCache));
375 soc->do_tag(objArrayOopDesc::base_offset_in_bytes());
376 soc->do_tag(typeArrayOopDesc::base_offset_in_bytes(T_BYTE));
377 soc->do_tag(sizeof(Symbol));
378
379 // Need to do this first, as subsequent steps may call virtual functions
380 // in archived Metadata objects.
381 CppVtables::serialize(soc);
382 soc->do_tag(--tag);
383
384 // Dump/restore miscellaneous metadata.
385 JavaClasses::serialize_offsets(soc);
386 Universe::serialize(soc);
387 soc->do_tag(--tag);
388
389 // Dump/restore references to commonly used names and signatures.
390 vmSymbols::serialize(soc);
391 soc->do_tag(--tag);
392
393 // Dump/restore the symbol/string/subgraph_info tables
394 SymbolTable::serialize_shared_table_header(soc);
395 StringTable::serialize_shared_table_header(soc);
396 HeapShared::serialize_tables(soc);
397 SystemDictionaryShared::serialize_dictionary_headers(soc);
398
399 InstanceMirrorKlass::serialize_offsets(soc);
400
401 // Dump/restore well known classes (pointers)
402 SystemDictionaryShared::serialize_vm_classes(soc);
403 soc->do_tag(--tag);
404
405 CDS_JAVA_HEAP_ONLY(Modules::serialize(soc);)
406 CDS_JAVA_HEAP_ONLY(Modules::serialize_addmods_names(soc);)
407 CDS_JAVA_HEAP_ONLY(ClassLoaderDataShared::serialize(soc);)
408
409 LambdaFormInvokers::serialize(soc);
410 soc->do_tag(666);
411 }
412
413 static void rewrite_nofast_bytecode(const methodHandle& method) {
414 BytecodeStream bcs(method);
415 while (!bcs.is_last_bytecode()) {
416 Bytecodes::Code opcode = bcs.next();
417 switch (opcode) {
418 case Bytecodes::_getfield: *bcs.bcp() = Bytecodes::_nofast_getfield; break;
419 case Bytecodes::_putfield: *bcs.bcp() = Bytecodes::_nofast_putfield; break;
420 case Bytecodes::_aload_0: *bcs.bcp() = Bytecodes::_nofast_aload_0; break;
421 case Bytecodes::_iload: {
422 if (!bcs.is_wide()) {
423 *bcs.bcp() = Bytecodes::_nofast_iload;
424 }
425 break;
426 }
427 default: break;
428 }
429 }
430 }
431
432 // [1] Rewrite all bytecodes as needed, so that the ConstMethod* will not be modified
433 // at run time by RewriteBytecodes/RewriteFrequentPairs
434 // [2] Assign a fingerprint, so one doesn't need to be assigned at run-time.
435 void MetaspaceShared::rewrite_nofast_bytecodes_and_calculate_fingerprints(Thread* thread, InstanceKlass* ik) {
436 for (int i = 0; i < ik->methods()->length(); i++) {
437 methodHandle m(thread, ik->methods()->at(i));
438 if (ik->can_be_verified_at_dumptime() && ik->is_linked()) {
439 rewrite_nofast_bytecode(m);
440 }
441 Fingerprinter fp(m);
442 // The side effect of this call sets method's fingerprint field.
443 fp.fingerprint();
444 }
445 }
446
447 class VM_PopulateDumpSharedSpace : public VM_Operation {
448 private:
449 ArchiveHeapInfo _heap_info;
450 FileMapInfo* _map_info;
451 StaticArchiveBuilder& _builder;
452
453 void dump_java_heap_objects(GrowableArray<Klass*>* klasses) NOT_CDS_JAVA_HEAP_RETURN;
454 void dump_shared_symbol_table(GrowableArray<Symbol*>* symbols) {
455 log_info(cds)("Dumping symbol table ...");
456 SymbolTable::write_to_archive(symbols);
457 }
458 char* dump_read_only_tables();
459
460 public:
461
462 VM_PopulateDumpSharedSpace(StaticArchiveBuilder& b) :
463 VM_Operation(), _heap_info(), _map_info(nullptr), _builder(b) {}
464
465 bool skip_operation() const { return false; }
466
467 VMOp_Type type() const { return VMOp_PopulateDumpSharedSpace; }
468 ArchiveHeapInfo* heap_info() { return &_heap_info; }
469 FileMapInfo* map_info() const { return _map_info; }
470 void doit(); // outline because gdb sucks
471 bool allow_nested_vm_operations() const { return true; }
472 }; // class VM_PopulateDumpSharedSpace
473
474 class StaticArchiveBuilder : public ArchiveBuilder {
475 public:
476 StaticArchiveBuilder() : ArchiveBuilder() {}
477
478 virtual void iterate_roots(MetaspaceClosure* it) {
479 FileMapInfo::metaspace_pointers_do(it);
480 SystemDictionaryShared::dumptime_classes_do(it);
481 Universe::metaspace_pointers_do(it);
482 vmSymbols::metaspace_pointers_do(it);
483
484 // The above code should find all the symbols that are referenced by the
485 // archived classes. We just need to add the extra symbols which
486 // may not be used by any of the archived classes -- these are usually
487 // symbols that we anticipate to be used at run time, so we can store
488 // them in the RO region, to be shared across multiple processes.
489 if (_extra_symbols != nullptr) {
490 for (int i = 0; i < _extra_symbols->length(); i++) {
491 it->push(_extra_symbols->adr_at(i));
492 }
493 }
494 }
495 };
496
497 char* VM_PopulateDumpSharedSpace::dump_read_only_tables() {
498 ArchiveBuilder::OtherROAllocMark mark;
499
500 SystemDictionaryShared::write_to_archive();
501
502 // Write lambform lines into archive
503 LambdaFormInvokers::dump_static_archive_invokers();
504 // Write module name into archive
505 CDS_JAVA_HEAP_ONLY(Modules::dump_main_module_name();)
506 // Write module names from --add-modules into archive
507 CDS_JAVA_HEAP_ONLY(Modules::dump_addmods_names();)
508 // Write the other data to the output array.
509 DumpRegion* ro_region = ArchiveBuilder::current()->ro_region();
510 char* start = ro_region->top();
511 WriteClosure wc(ro_region);
512 MetaspaceShared::serialize(&wc);
513
514 return start;
515 }
516
517 void VM_PopulateDumpSharedSpace::doit() {
518 guarantee(!CDSConfig::is_using_archive(), "We should not be using an archive when we dump");
519
520 DEBUG_ONLY(SystemDictionaryShared::NoClassLoadingMark nclm);
521
522 FileMapInfo::check_nonempty_dir_in_shared_path_table();
523
524 NOT_PRODUCT(SystemDictionary::verify();)
525
526 // Block concurrent class unloading from changing the _dumptime_table
527 MutexLocker ml(DumpTimeTable_lock, Mutex::_no_safepoint_check_flag);
528 SystemDictionaryShared::check_excluded_classes();
529
530 _builder.gather_source_objs();
531 _builder.reserve_buffer();
532
533 CppVtables::dumptime_init(&_builder);
534
535 _builder.sort_metadata_objs();
536 _builder.dump_rw_metadata();
537 _builder.dump_ro_metadata();
538 _builder.relocate_metaspaceobj_embedded_pointers();
539
540 dump_java_heap_objects(_builder.klasses());
541 dump_shared_symbol_table(_builder.symbols());
542
543 log_info(cds)("Make classes shareable");
544 _builder.make_klasses_shareable();
545
546 char* serialized_data = dump_read_only_tables();
547
548 SystemDictionaryShared::adjust_lambda_proxy_class_dictionary();
549
550 // The vtable clones contain addresses of the current process.
551 // We don't want to write these addresses into the archive.
552 CppVtables::zero_archived_vtables();
553
554 // Write the archive file
555 const char* static_archive = CDSConfig::static_archive_path();
556 assert(static_archive != nullptr, "SharedArchiveFile not set?");
557 _map_info = new FileMapInfo(static_archive, true);
558 _map_info->populate_header(MetaspaceShared::core_region_alignment());
559 _map_info->set_serialized_data(serialized_data);
560 _map_info->set_cloned_vtables(CppVtables::vtables_serialized_base());
561 }
562
563 class CollectCLDClosure : public CLDClosure {
564 GrowableArray<ClassLoaderData*> _loaded_cld;
565 GrowableArray<OopHandle> _loaded_cld_handles; // keep the CLDs alive
566 Thread* _current_thread;
567 public:
568 CollectCLDClosure(Thread* thread) : _current_thread(thread) {}
569 ~CollectCLDClosure() {
570 for (int i = 0; i < _loaded_cld_handles.length(); i++) {
571 _loaded_cld_handles.at(i).release(Universe::vm_global());
572 }
573 }
574 void do_cld(ClassLoaderData* cld) {
575 assert(cld->is_alive(), "must be");
576 _loaded_cld.append(cld);
577 _loaded_cld_handles.append(OopHandle(Universe::vm_global(), cld->holder()));
578 }
579
580 int nof_cld() const { return _loaded_cld.length(); }
581 ClassLoaderData* cld_at(int index) { return _loaded_cld.at(index); }
582 };
583
584 // Check if we can eagerly link this class at dump time, so we can avoid the
585 // runtime linking overhead (especially verification)
586 bool MetaspaceShared::may_be_eagerly_linked(InstanceKlass* ik) {
587 if (!ik->can_be_verified_at_dumptime()) {
588 // For old classes, try to leave them in the unlinked state, so
589 // we can still store them in the archive. They must be
590 // linked/verified at runtime.
591 return false;
592 }
593 if (CDSConfig::is_dumping_dynamic_archive() && ik->is_shared_unregistered_class()) {
594 // Linking of unregistered classes at this stage may cause more
595 // classes to be resolved, resulting in calls to ClassLoader.loadClass()
596 // that may not be expected by custom class loaders.
597 //
598 // It's OK to do this for the built-in loaders as we know they can
599 // tolerate this.
600 return false;
601 }
602 return true;
603 }
604
605 bool MetaspaceShared::link_class_for_cds(InstanceKlass* ik, TRAPS) {
606 // Link the class to cause the bytecodes to be rewritten and the
607 // cpcache to be created. Class verification is done according
608 // to -Xverify setting.
609 bool res = MetaspaceShared::try_link_class(THREAD, ik);
610 ClassPrelinker::dumptime_resolve_constants(ik, CHECK_(false));
611 return res;
612 }
613
614 void MetaspaceShared::link_shared_classes(bool jcmd_request, TRAPS) {
615 ClassPrelinker::initialize();
616
617 if (!jcmd_request) {
618 LambdaFormInvokers::regenerate_holder_classes(CHECK);
619 }
620
621 // Collect all loaded ClassLoaderData.
622 CollectCLDClosure collect_cld(THREAD);
623 {
624 // ClassLoaderDataGraph::loaded_cld_do requires ClassLoaderDataGraph_lock.
625 // We cannot link the classes while holding this lock (or else we may run into deadlock).
626 // Therefore, we need to first collect all the CLDs, and then link their classes after
627 // releasing the lock.
628 MutexLocker lock(ClassLoaderDataGraph_lock);
629 ClassLoaderDataGraph::loaded_cld_do(&collect_cld);
630 }
631
632 while (true) {
633 bool has_linked = false;
634 for (int i = 0; i < collect_cld.nof_cld(); i++) {
635 ClassLoaderData* cld = collect_cld.cld_at(i);
636 for (Klass* klass = cld->klasses(); klass != nullptr; klass = klass->next_link()) {
637 if (klass->is_instance_klass()) {
638 InstanceKlass* ik = InstanceKlass::cast(klass);
639 if (may_be_eagerly_linked(ik)) {
640 has_linked |= link_class_for_cds(ik, CHECK);
641 }
642 }
643 }
644 }
645
646 if (!has_linked) {
647 break;
648 }
649 // Class linking includes verification which may load more classes.
650 // Keep scanning until we have linked no more classes.
651 }
652 }
653
654 void MetaspaceShared::prepare_for_dumping() {
655 assert(CDSConfig::is_dumping_archive(), "sanity");
656 CDSConfig::check_unsupported_dumping_module_options();
657 ClassLoader::initialize_shared_path(JavaThread::current());
658 }
659
660 // Preload classes from a list, populate the shared spaces and dump to a
661 // file.
662 void MetaspaceShared::preload_and_dump(TRAPS) {
663 ResourceMark rm(THREAD);
664 StaticArchiveBuilder builder;
665 preload_and_dump_impl(builder, THREAD);
666 if (HAS_PENDING_EXCEPTION) {
667 if (PENDING_EXCEPTION->is_a(vmClasses::OutOfMemoryError_klass())) {
668 log_error(cds)("Out of memory. Please run with a larger Java heap, current MaxHeapSize = "
669 SIZE_FORMAT "M", MaxHeapSize/M);
670 MetaspaceShared::writing_error();
671 } else {
672 log_error(cds)("%s: %s", PENDING_EXCEPTION->klass()->external_name(),
673 java_lang_String::as_utf8_string(java_lang_Throwable::message(PENDING_EXCEPTION)));
674 MetaspaceShared::writing_error("Unexpected exception, use -Xlog:cds,exceptions=trace for detail");
675 }
676 }
677 }
678
679 #if INCLUDE_CDS_JAVA_HEAP && defined(_LP64)
680 void MetaspaceShared::adjust_heap_sizes_for_dumping() {
681 if (!CDSConfig::is_dumping_heap() || UseCompressedOops) {
682 return;
683 }
684 // CDS heap dumping requires all string oops to have an offset
685 // from the heap bottom that can be encoded in 32-bit.
686 julong max_heap_size = (julong)(4 * G);
687
688 if (MinHeapSize > max_heap_size) {
689 log_debug(cds)("Setting MinHeapSize to 4G for CDS dumping, original size = " SIZE_FORMAT "M", MinHeapSize/M);
690 FLAG_SET_ERGO(MinHeapSize, max_heap_size);
691 }
692 if (InitialHeapSize > max_heap_size) {
693 log_debug(cds)("Setting InitialHeapSize to 4G for CDS dumping, original size = " SIZE_FORMAT "M", InitialHeapSize/M);
694 FLAG_SET_ERGO(InitialHeapSize, max_heap_size);
695 }
696 if (MaxHeapSize > max_heap_size) {
697 log_debug(cds)("Setting MaxHeapSize to 4G for CDS dumping, original size = " SIZE_FORMAT "M", MaxHeapSize/M);
698 FLAG_SET_ERGO(MaxHeapSize, max_heap_size);
699 }
700 }
701 #endif // INCLUDE_CDS_JAVA_HEAP && _LP64
702
703 void MetaspaceShared::get_default_classlist(char* default_classlist, const size_t buf_size) {
704 // Construct the path to the class list (in jre/lib)
705 // Walk up two directories from the location of the VM and
706 // optionally tack on "lib" (depending on platform)
707 os::jvm_path(default_classlist, (jint)(buf_size));
708 for (int i = 0; i < 3; i++) {
709 char *end = strrchr(default_classlist, *os::file_separator());
710 if (end != nullptr) *end = '\0';
711 }
712 size_t classlist_path_len = strlen(default_classlist);
713 if (classlist_path_len >= 3) {
714 if (strcmp(default_classlist + classlist_path_len - 3, "lib") != 0) {
715 if (classlist_path_len < buf_size - 4) {
716 jio_snprintf(default_classlist + classlist_path_len,
717 buf_size - classlist_path_len,
718 "%slib", os::file_separator());
719 classlist_path_len += 4;
720 }
721 }
722 }
723 if (classlist_path_len < buf_size - 10) {
724 jio_snprintf(default_classlist + classlist_path_len,
725 buf_size - classlist_path_len,
726 "%sclasslist", os::file_separator());
727 }
728 }
729
730 void MetaspaceShared::preload_classes(TRAPS) {
731 char default_classlist[JVM_MAXPATHLEN];
732 const char* classlist_path;
733
734 get_default_classlist(default_classlist, sizeof(default_classlist));
735 if (SharedClassListFile == nullptr) {
736 classlist_path = default_classlist;
737 } else {
738 classlist_path = SharedClassListFile;
739 }
740
741 log_info(cds)("Loading classes to share ...");
742 ClassListParser::parse_classlist(classlist_path,
743 ClassListParser::_parse_all, CHECK);
744 if (ExtraSharedClassListFile) {
745 ClassListParser::parse_classlist(ExtraSharedClassListFile,
746 ClassListParser::_parse_all, CHECK);
747 }
748 if (classlist_path != default_classlist) {
749 struct stat statbuf;
750 if (os::stat(default_classlist, &statbuf) == 0) {
751 // File exists, let's use it.
752 ClassListParser::parse_classlist(default_classlist,
753 ClassListParser::_parse_lambda_forms_invokers_only, CHECK);
754 }
755 }
756
757 // Some classes are used at CDS runtime but are not loaded, and therefore archived, at
758 // dumptime. We can perform dummmy calls to these classes at dumptime to ensure they
759 // are archived.
760 exercise_runtime_cds_code(CHECK);
761
762 log_info(cds)("Loading classes to share: done.");
763 }
764
765 void MetaspaceShared::exercise_runtime_cds_code(TRAPS) {
766 // Exercise the manifest processing code
767 const char* dummy = "Manifest-Version: 1.0\n";
768 CDSProtectionDomain::create_jar_manifest(dummy, strlen(dummy), CHECK);
769
770 // Exercise FileSystem and URL code
771 CDSProtectionDomain::to_file_URL("dummy.jar", Handle(), CHECK);
772 }
773
774 void MetaspaceShared::preload_and_dump_impl(StaticArchiveBuilder& builder, TRAPS) {
775 preload_classes(CHECK);
776
777 if (SharedArchiveConfigFile) {
778 log_info(cds)("Reading extra data from %s ...", SharedArchiveConfigFile);
779 read_extra_data(THREAD, SharedArchiveConfigFile);
780 log_info(cds)("Reading extra data: done.");
781 }
782
783 // Rewrite and link classes
784 log_info(cds)("Rewriting and linking classes ...");
785
786 // Link any classes which got missed. This would happen if we have loaded classes that
787 // were not explicitly specified in the classlist. E.g., if an interface implemented by class K
788 // fails verification, all other interfaces that were not specified in the classlist but
789 // are implemented by K are not verified.
790 link_shared_classes(false/*not from jcmd*/, CHECK);
791 log_info(cds)("Rewriting and linking classes: done");
792
793 #if INCLUDE_CDS_JAVA_HEAP
794 if (CDSConfig::is_dumping_heap()) {
795 if (!HeapShared::is_archived_boot_layer_available(THREAD)) {
796 log_info(cds)("archivedBootLayer not available, disabling full module graph");
797 CDSConfig::stop_dumping_full_module_graph();
798 }
799 HeapShared::init_for_dumping(CHECK);
800 ArchiveHeapWriter::init();
801 if (CDSConfig::is_dumping_full_module_graph()) {
802 HeapShared::reset_archived_object_states(CHECK);
803 }
804
805 // Do this at the very end, when no Java code will be executed. Otherwise
806 // some new strings may be added to the intern table.
807 StringTable::allocate_shared_strings_array(CHECK);
808 } else {
809 log_info(cds)("Not dumping heap, reset CDSConfig::_is_using_optimized_module_handling");
810 CDSConfig::stop_using_optimized_module_handling();
811 }
812 #endif
813
814 VM_PopulateDumpSharedSpace op(builder);
815 VMThread::execute(&op);
816
817 if (!write_static_archive(&builder, op.map_info(), op.heap_info())) {
818 THROW_MSG(vmSymbols::java_io_IOException(), "Encountered error while dumping");
819 }
820 }
821
822 bool MetaspaceShared::write_static_archive(ArchiveBuilder* builder, FileMapInfo* map_info, ArchiveHeapInfo* heap_info) {
823 // relocate the data so that it can be mapped to MetaspaceShared::requested_base_address()
824 // without runtime relocation.
825 builder->relocate_to_requested();
826
827 map_info->open_for_write();
828 if (!map_info->is_open()) {
829 return false;
830 }
831 builder->write_archive(map_info, heap_info);
832
833 if (AllowArchivingWithJavaAgent) {
834 log_warning(cds)("This archive was created with AllowArchivingWithJavaAgent. It should be used "
835 "for testing purposes only and should not be used in a production environment");
836 }
837 return true;
838 }
839
840 // Returns true if the class's status has changed.
841 bool MetaspaceShared::try_link_class(JavaThread* current, InstanceKlass* ik) {
842 ExceptionMark em(current);
843 JavaThread* THREAD = current; // For exception macros.
844 assert(CDSConfig::is_dumping_archive(), "sanity");
845 if (!ik->is_shared() && ik->is_loaded() && !ik->is_linked() && ik->can_be_verified_at_dumptime() &&
846 !SystemDictionaryShared::has_class_failed_verification(ik)) {
847 bool saved = BytecodeVerificationLocal;
848 if (ik->is_shared_unregistered_class() && ik->class_loader() == nullptr) {
849 // The verification decision is based on BytecodeVerificationRemote
850 // for non-system classes. Since we are using the null classloader
851 // to load non-system classes for customized class loaders during dumping,
852 // we need to temporarily change BytecodeVerificationLocal to be the same as
853 // BytecodeVerificationRemote. Note this can cause the parent system
854 // classes also being verified. The extra overhead is acceptable during
855 // dumping.
856 BytecodeVerificationLocal = BytecodeVerificationRemote;
857 }
858 ik->link_class(THREAD);
859 if (HAS_PENDING_EXCEPTION) {
860 ResourceMark rm(THREAD);
861 log_warning(cds)("Preload Warning: Verification failed for %s",
862 ik->external_name());
863 CLEAR_PENDING_EXCEPTION;
864 SystemDictionaryShared::set_class_has_failed_verification(ik);
865 }
866 ik->compute_has_loops_flag_for_methods();
867 BytecodeVerificationLocal = saved;
868 return true;
869 } else {
870 return false;
871 }
872 }
873
874 #if INCLUDE_CDS_JAVA_HEAP
875 void VM_PopulateDumpSharedSpace::dump_java_heap_objects(GrowableArray<Klass*>* klasses) {
876 if(!HeapShared::can_write()) {
877 log_info(cds)(
878 "Archived java heap is not supported as UseG1GC "
879 "and UseCompressedClassPointers are required."
880 "Current settings: UseG1GC=%s, UseCompressedClassPointers=%s.",
881 BOOL_TO_STR(UseG1GC), BOOL_TO_STR(UseCompressedClassPointers));
882 return;
883 }
884 // Find all the interned strings that should be dumped.
885 int i;
886 for (i = 0; i < klasses->length(); i++) {
887 Klass* k = klasses->at(i);
888 if (k->is_instance_klass()) {
889 InstanceKlass* ik = InstanceKlass::cast(k);
890 if (ik->is_linked()) {
891 ik->constants()->add_dumped_interned_strings();
892 }
893 }
894 }
895 if (_extra_interned_strings != nullptr) {
896 for (i = 0; i < _extra_interned_strings->length(); i ++) {
897 OopHandle string = _extra_interned_strings->at(i);
898 HeapShared::add_to_dumped_interned_strings(string.resolve());
899 }
900 }
901
902 HeapShared::archive_objects(&_heap_info);
903 ArchiveBuilder::OtherROAllocMark mark;
904 HeapShared::write_subgraph_info_table();
905 }
906 #endif // INCLUDE_CDS_JAVA_HEAP
907
908 void MetaspaceShared::set_shared_metaspace_range(void* base, void *static_top, void* top) {
909 assert(base <= static_top && static_top <= top, "must be");
910 _shared_metaspace_static_top = static_top;
911 MetaspaceObj::set_shared_metaspace_range(base, top);
912 }
913
914 bool MetaspaceShared::is_shared_dynamic(void* p) {
915 if ((p < MetaspaceObj::shared_metaspace_top()) &&
916 (p >= _shared_metaspace_static_top)) {
917 return true;
918 } else {
919 return false;
920 }
921 }
922
923 bool MetaspaceShared::is_shared_static(void* p) {
924 if (is_in_shared_metaspace(p) && !is_shared_dynamic(p)) {
925 return true;
926 } else {
927 return false;
928 }
929 }
930
931 // This function is called when the JVM is unable to load the specified archive(s) due to one
932 // of the following conditions.
933 // - There's an error that indicates that the archive(s) files were corrupt or otherwise damaged.
934 // - When -XX:+RequireSharedSpaces is specified, AND the JVM cannot load the archive(s) due
935 // to version or classpath mismatch.
936 void MetaspaceShared::unrecoverable_loading_error(const char* message) {
937 log_error(cds)("An error has occurred while processing the shared archive file.");
938 if (message != nullptr) {
939 log_error(cds)("%s", message);
940 }
941 vm_exit_during_initialization("Unable to use shared archive.", nullptr);
942 }
943
944 // This function is called when the JVM is unable to write the specified CDS archive due to an
945 // unrecoverable error.
946 void MetaspaceShared::unrecoverable_writing_error(const char* message) {
947 writing_error(message);
948 vm_direct_exit(1);
949 }
950
951 // This function is called when the JVM is unable to write the specified CDS archive due to a
952 // an error. The error will be propagated
953 void MetaspaceShared::writing_error(const char* message) {
954 log_error(cds)("An error has occurred while writing the shared archive file.");
955 if (message != nullptr) {
956 log_error(cds)("%s", message);
957 }
958 }
959
960 void MetaspaceShared::initialize_runtime_shared_and_meta_spaces() {
961 assert(CDSConfig::is_using_archive(), "Must be called when UseSharedSpaces is enabled");
962 MapArchiveResult result = MAP_ARCHIVE_OTHER_FAILURE;
963
964 FileMapInfo* static_mapinfo = open_static_archive();
965 FileMapInfo* dynamic_mapinfo = nullptr;
966
967 if (static_mapinfo != nullptr) {
968 log_info(cds)("Core region alignment: " SIZE_FORMAT, static_mapinfo->core_region_alignment());
969 dynamic_mapinfo = open_dynamic_archive();
970
971 // First try to map at the requested address
972 result = map_archives(static_mapinfo, dynamic_mapinfo, true);
973 if (result == MAP_ARCHIVE_MMAP_FAILURE) {
974 // Mapping has failed (probably due to ASLR). Let's map at an address chosen
975 // by the OS.
976 log_info(cds)("Try to map archive(s) at an alternative address");
977 result = map_archives(static_mapinfo, dynamic_mapinfo, false);
978 }
979 }
980
981 if (result == MAP_ARCHIVE_SUCCESS) {
982 bool dynamic_mapped = (dynamic_mapinfo != nullptr && dynamic_mapinfo->is_mapped());
983 char* cds_base = static_mapinfo->mapped_base();
984 char* cds_end = dynamic_mapped ? dynamic_mapinfo->mapped_end() : static_mapinfo->mapped_end();
985 // Register CDS memory region with LSan.
986 LSAN_REGISTER_ROOT_REGION(cds_base, cds_end - cds_base);
987 set_shared_metaspace_range(cds_base, static_mapinfo->mapped_end(), cds_end);
988 _relocation_delta = static_mapinfo->relocation_delta();
989 _requested_base_address = static_mapinfo->requested_base_address();
990 if (dynamic_mapped) {
991 FileMapInfo::set_shared_path_table(dynamic_mapinfo);
992 // turn AutoCreateSharedArchive off if successfully mapped
993 AutoCreateSharedArchive = false;
994 } else {
995 FileMapInfo::set_shared_path_table(static_mapinfo);
996 }
997 } else {
998 set_shared_metaspace_range(nullptr, nullptr, nullptr);
999 if (CDSConfig::is_dumping_dynamic_archive()) {
1000 log_warning(cds)("-XX:ArchiveClassesAtExit is unsupported when base CDS archive is not loaded. Run with -Xlog:cds for more info.");
1001 }
1002 UseSharedSpaces = false;
1003 // The base archive cannot be mapped. We cannot dump the dynamic shared archive.
1004 AutoCreateSharedArchive = false;
1005 CDSConfig::disable_dumping_dynamic_archive();
1006 log_info(cds)("Unable to map shared spaces");
1007 if (PrintSharedArchiveAndExit) {
1008 MetaspaceShared::unrecoverable_loading_error("Unable to use shared archive.");
1009 } else if (RequireSharedSpaces) {
1010 MetaspaceShared::unrecoverable_loading_error("Unable to map shared spaces");
1011 }
1012 }
1013
1014 // If mapping failed and -XShare:on, the vm should exit
1015 bool has_failed = false;
1016 if (static_mapinfo != nullptr && !static_mapinfo->is_mapped()) {
1017 has_failed = true;
1018 delete static_mapinfo;
1019 }
1020 if (dynamic_mapinfo != nullptr && !dynamic_mapinfo->is_mapped()) {
1021 has_failed = true;
1022 delete dynamic_mapinfo;
1023 }
1024 if (RequireSharedSpaces && has_failed) {
1025 MetaspaceShared::unrecoverable_loading_error("Unable to map shared spaces");
1026 }
1027 }
1028
1029 FileMapInfo* MetaspaceShared::open_static_archive() {
1030 const char* static_archive = CDSConfig::static_archive_path();
1031 assert(static_archive != nullptr, "sanity");
1032 FileMapInfo* mapinfo = new FileMapInfo(static_archive, true);
1033 if (!mapinfo->initialize()) {
1034 delete(mapinfo);
1035 return nullptr;
1036 }
1037 return mapinfo;
1038 }
1039
1040 FileMapInfo* MetaspaceShared::open_dynamic_archive() {
1041 if (CDSConfig::is_dumping_dynamic_archive()) {
1042 return nullptr;
1043 }
1044 const char* dynamic_archive = CDSConfig::dynamic_archive_path();
1045 if (dynamic_archive == nullptr) {
1046 return nullptr;
1047 }
1048
1049 FileMapInfo* mapinfo = new FileMapInfo(dynamic_archive, false);
1050 if (!mapinfo->initialize()) {
1051 delete(mapinfo);
1052 if (RequireSharedSpaces) {
1053 MetaspaceShared::unrecoverable_loading_error("Failed to initialize dynamic archive");
1054 }
1055 return nullptr;
1056 }
1057 return mapinfo;
1058 }
1059
1060 // use_requested_addr:
1061 // true = map at FileMapHeader::_requested_base_address
1062 // false = map at an alternative address picked by OS.
1063 MapArchiveResult MetaspaceShared::map_archives(FileMapInfo* static_mapinfo, FileMapInfo* dynamic_mapinfo,
1064 bool use_requested_addr) {
1065 if (use_requested_addr && static_mapinfo->requested_base_address() == nullptr) {
1066 log_info(cds)("Archive(s) were created with -XX:SharedBaseAddress=0. Always map at os-selected address.");
1067 return MAP_ARCHIVE_MMAP_FAILURE;
1068 }
1069
1070 PRODUCT_ONLY(if (ArchiveRelocationMode == 1 && use_requested_addr) {
1071 // For product build only -- this is for benchmarking the cost of doing relocation.
1072 // For debug builds, the check is done below, after reserving the space, for better test coverage
1073 // (see comment below).
1074 log_info(cds)("ArchiveRelocationMode == 1: always map archive(s) at an alternative address");
1075 return MAP_ARCHIVE_MMAP_FAILURE;
1076 });
1077
1078 if (ArchiveRelocationMode == 2 && !use_requested_addr) {
1079 log_info(cds)("ArchiveRelocationMode == 2: never map archive(s) at an alternative address");
1080 return MAP_ARCHIVE_MMAP_FAILURE;
1081 };
1082
1083 if (dynamic_mapinfo != nullptr) {
1084 // Ensure that the OS won't be able to allocate new memory spaces between the two
1085 // archives, or else it would mess up the simple comparison in MetaspaceObj::is_shared().
1086 assert(static_mapinfo->mapping_end_offset() == dynamic_mapinfo->mapping_base_offset(), "no gap");
1087 }
1088
1089 ReservedSpace total_space_rs, archive_space_rs, class_space_rs;
1090 MapArchiveResult result = MAP_ARCHIVE_OTHER_FAILURE;
1091 char* mapped_base_address = reserve_address_space_for_archives(static_mapinfo,
1092 dynamic_mapinfo,
1093 use_requested_addr,
1094 total_space_rs,
1095 archive_space_rs,
1096 class_space_rs);
1097 if (mapped_base_address == nullptr) {
1098 result = MAP_ARCHIVE_MMAP_FAILURE;
1099 log_debug(cds)("Failed to reserve spaces (use_requested_addr=%u)", (unsigned)use_requested_addr);
1100 } else {
1101
1102 #ifdef ASSERT
1103 // Some sanity checks after reserving address spaces for archives
1104 // and class space.
1105 assert(archive_space_rs.is_reserved(), "Sanity");
1106 if (Metaspace::using_class_space()) {
1107 // Class space must closely follow the archive space. Both spaces
1108 // must be aligned correctly.
1109 assert(class_space_rs.is_reserved(),
1110 "A class space should have been reserved");
1111 assert(class_space_rs.base() >= archive_space_rs.end(),
1112 "class space should follow the cds archive space");
1113 assert(is_aligned(archive_space_rs.base(),
1114 core_region_alignment()),
1115 "Archive space misaligned");
1116 assert(is_aligned(class_space_rs.base(),
1117 Metaspace::reserve_alignment()),
1118 "class space misaligned");
1119 }
1120 #endif // ASSERT
1121
1122 log_info(cds)("Reserved archive_space_rs [" INTPTR_FORMAT " - " INTPTR_FORMAT "] (" SIZE_FORMAT ") bytes",
1123 p2i(archive_space_rs.base()), p2i(archive_space_rs.end()), archive_space_rs.size());
1124 log_info(cds)("Reserved class_space_rs [" INTPTR_FORMAT " - " INTPTR_FORMAT "] (" SIZE_FORMAT ") bytes",
1125 p2i(class_space_rs.base()), p2i(class_space_rs.end()), class_space_rs.size());
1126
1127 if (MetaspaceShared::use_windows_memory_mapping()) {
1128 // We have now reserved address space for the archives, and will map in
1129 // the archive files into this space.
1130 //
1131 // Special handling for Windows: on Windows we cannot map a file view
1132 // into an existing memory mapping. So, we unmap the address range we
1133 // just reserved again, which will make it available for mapping the
1134 // archives.
1135 // Reserving this range has not been for naught however since it makes
1136 // us reasonably sure the address range is available.
1137 //
1138 // But still it may fail, since between unmapping the range and mapping
1139 // in the archive someone else may grab the address space. Therefore
1140 // there is a fallback in FileMap::map_region() where we just read in
1141 // the archive files sequentially instead of mapping it in. We couple
1142 // this with use_requested_addr, since we're going to patch all the
1143 // pointers anyway so there's no benefit to mmap.
1144 if (use_requested_addr) {
1145 assert(!total_space_rs.is_reserved(), "Should not be reserved for Windows");
1146 log_info(cds)("Windows mmap workaround: releasing archive space.");
1147 archive_space_rs.release();
1148 }
1149 }
1150 MapArchiveResult static_result = map_archive(static_mapinfo, mapped_base_address, archive_space_rs);
1151 MapArchiveResult dynamic_result = (static_result == MAP_ARCHIVE_SUCCESS) ?
1152 map_archive(dynamic_mapinfo, mapped_base_address, archive_space_rs) : MAP_ARCHIVE_OTHER_FAILURE;
1153
1154 DEBUG_ONLY(if (ArchiveRelocationMode == 1 && use_requested_addr) {
1155 // This is for simulating mmap failures at the requested address. In
1156 // debug builds, we do it here (after all archives have possibly been
1157 // mapped), so we can thoroughly test the code for failure handling
1158 // (releasing all allocated resource, etc).
1159 log_info(cds)("ArchiveRelocationMode == 1: always map archive(s) at an alternative address");
1160 if (static_result == MAP_ARCHIVE_SUCCESS) {
1161 static_result = MAP_ARCHIVE_MMAP_FAILURE;
1162 }
1163 if (dynamic_result == MAP_ARCHIVE_SUCCESS) {
1164 dynamic_result = MAP_ARCHIVE_MMAP_FAILURE;
1165 }
1166 });
1167
1168 if (static_result == MAP_ARCHIVE_SUCCESS) {
1169 if (dynamic_result == MAP_ARCHIVE_SUCCESS) {
1170 result = MAP_ARCHIVE_SUCCESS;
1171 } else if (dynamic_result == MAP_ARCHIVE_OTHER_FAILURE) {
1172 assert(dynamic_mapinfo != nullptr && !dynamic_mapinfo->is_mapped(), "must have failed");
1173 // No need to retry mapping the dynamic archive again, as it will never succeed
1174 // (bad file, etc) -- just keep the base archive.
1175 log_warning(cds, dynamic)("Unable to use shared archive. The top archive failed to load: %s",
1176 dynamic_mapinfo->full_path());
1177 result = MAP_ARCHIVE_SUCCESS;
1178 // TODO, we can give the unused space for the dynamic archive to class_space_rs, but there's no
1179 // easy API to do that right now.
1180 } else {
1181 result = MAP_ARCHIVE_MMAP_FAILURE;
1182 }
1183 } else if (static_result == MAP_ARCHIVE_OTHER_FAILURE) {
1184 result = MAP_ARCHIVE_OTHER_FAILURE;
1185 } else {
1186 result = MAP_ARCHIVE_MMAP_FAILURE;
1187 }
1188 }
1189
1190 if (result == MAP_ARCHIVE_SUCCESS) {
1191 SharedBaseAddress = (size_t)mapped_base_address;
1192 #ifdef _LP64
1193 if (Metaspace::using_class_space()) {
1194 // Set up ccs in metaspace.
1195 Metaspace::initialize_class_space(class_space_rs);
1196
1197 // Set up compressed Klass pointer encoding: the encoding range must
1198 // cover both archive and class space.
1199 address cds_base = (address)static_mapinfo->mapped_base();
1200 address ccs_end = (address)class_space_rs.end();
1201 assert(ccs_end > cds_base, "Sanity check");
1202 #if INCLUDE_CDS_JAVA_HEAP
1203 // We archived objects with pre-computed narrow Klass id. Set up encoding such that these Ids stay valid.
1204 address precomputed_narrow_klass_base = cds_base;
1205 const int precomputed_narrow_klass_shift = ArchiveHeapWriter::precomputed_narrow_klass_shift;
1206 CompressedKlassPointers::initialize_for_given_encoding(
1207 cds_base, ccs_end - cds_base, // Klass range
1208 precomputed_narrow_klass_base, precomputed_narrow_klass_shift // precomputed encoding, see ArchiveHeapWriter
1209 );
1210 #else
1211 CompressedKlassPointers::initialize (
1212 cds_base, ccs_end - cds_base // Klass range
1213 );
1214 #endif // INCLUDE_CDS_JAVA_HEAP
1215 // map_or_load_heap_region() compares the current narrow oop and klass encodings
1216 // with the archived ones, so it must be done after all encodings are determined.
1217 static_mapinfo->map_or_load_heap_region();
1218 }
1219 #endif // _LP64
1220 log_info(cds)("initial optimized module handling: %s", CDSConfig::is_using_optimized_module_handling() ? "enabled" : "disabled");
1221 log_info(cds)("initial full module graph: %s", CDSConfig::is_using_full_module_graph() ? "enabled" : "disabled");
1222 } else {
1223 unmap_archive(static_mapinfo);
1224 unmap_archive(dynamic_mapinfo);
1225 release_reserved_spaces(total_space_rs, archive_space_rs, class_space_rs);
1226 }
1227
1228 return result;
1229 }
1230
1231
1232 // This will reserve two address spaces suitable to house Klass structures, one
1233 // for the cds archives (static archive and optionally dynamic archive) and
1234 // optionally one move for ccs.
1235 //
1236 // Since both spaces must fall within the compressed class pointer encoding
1237 // range, they are allocated close to each other.
1238 //
1239 // Space for archives will be reserved first, followed by a potential gap,
1240 // followed by the space for ccs:
1241 //
1242 // +-- Base address A B End
1243 // | | | |
1244 // v v v v
1245 // +-------------+--------------+ +----------------------+
1246 // | static arc | [dyn. arch] | [gap] | compr. class space |
1247 // +-------------+--------------+ +----------------------+
1248 //
1249 // (The gap may result from different alignment requirements between metaspace
1250 // and CDS)
1251 //
1252 // If UseCompressedClassPointers is disabled, only one address space will be
1253 // reserved:
1254 //
1255 // +-- Base address End
1256 // | |
1257 // v v
1258 // +-------------+--------------+
1259 // | static arc | [dyn. arch] |
1260 // +-------------+--------------+
1261 //
1262 // Base address: If use_archive_base_addr address is true, the Base address is
1263 // determined by the address stored in the static archive. If
1264 // use_archive_base_addr address is false, this base address is determined
1265 // by the platform.
1266 //
1267 // If UseCompressedClassPointers=1, the range encompassing both spaces will be
1268 // suitable to en/decode narrow Klass pointers: the base will be valid for
1269 // encoding, the range [Base, End) not surpass KlassEncodingMetaspaceMax.
1270 //
1271 // Return:
1272 //
1273 // - On success:
1274 // - total_space_rs will be reserved as whole for archive_space_rs and
1275 // class_space_rs if UseCompressedClassPointers is true.
1276 // On Windows, try reserve archive_space_rs and class_space_rs
1277 // separately first if use_archive_base_addr is true.
1278 // - archive_space_rs will be reserved and large enough to host static and
1279 // if needed dynamic archive: [Base, A).
1280 // archive_space_rs.base and size will be aligned to CDS reserve
1281 // granularity.
1282 // - class_space_rs: If UseCompressedClassPointers=1, class_space_rs will
1283 // be reserved. Its start address will be aligned to metaspace reserve
1284 // alignment, which may differ from CDS alignment. It will follow the cds
1285 // archive space, close enough such that narrow class pointer encoding
1286 // covers both spaces.
1287 // If UseCompressedClassPointers=0, class_space_rs remains unreserved.
1288 // - On error: null is returned and the spaces remain unreserved.
1289 char* MetaspaceShared::reserve_address_space_for_archives(FileMapInfo* static_mapinfo,
1290 FileMapInfo* dynamic_mapinfo,
1291 bool use_archive_base_addr,
1292 ReservedSpace& total_space_rs,
1293 ReservedSpace& archive_space_rs,
1294 ReservedSpace& class_space_rs) {
1295
1296 address const base_address = (address) (use_archive_base_addr ? static_mapinfo->requested_base_address() : nullptr);
1297 const size_t archive_space_alignment = core_region_alignment();
1298
1299 // Size and requested location of the archive_space_rs (for both static and dynamic archives)
1300 assert(static_mapinfo->mapping_base_offset() == 0, "Must be");
1301 size_t archive_end_offset = (dynamic_mapinfo == nullptr) ? static_mapinfo->mapping_end_offset() : dynamic_mapinfo->mapping_end_offset();
1302 size_t archive_space_size = align_up(archive_end_offset, archive_space_alignment);
1303
1304 if (!Metaspace::using_class_space()) {
1305 // Get the simple case out of the way first:
1306 // no compressed class space, simple allocation.
1307
1308 // When running without class space, requested archive base should be aligned to cds core alignment.
1309 assert(is_aligned(base_address, archive_space_alignment),
1310 "Archive base address unaligned: " PTR_FORMAT ", needs alignment: %zu.",
1311 p2i(base_address), archive_space_alignment);
1312
1313 archive_space_rs = ReservedSpace(archive_space_size, archive_space_alignment,
1314 os::vm_page_size(), (char*)base_address);
1315 if (archive_space_rs.is_reserved()) {
1316 assert(base_address == nullptr ||
1317 (address)archive_space_rs.base() == base_address, "Sanity");
1318 // Register archive space with NMT.
1319 MemTracker::record_virtual_memory_tag(archive_space_rs.base(), mtClassShared);
1320 return archive_space_rs.base();
1321 }
1322 return nullptr;
1323 }
1324
1325 #ifdef _LP64
1326
1327 // Complex case: two spaces adjacent to each other, both to be addressable
1328 // with narrow class pointers.
1329 // We reserve the whole range spanning both spaces, then split that range up.
1330
1331 const size_t class_space_alignment = Metaspace::reserve_alignment();
1332
1333 // When running with class space, requested archive base must satisfy both cds core alignment
1334 // and class space alignment.
1335 const size_t base_address_alignment = MAX2(class_space_alignment, archive_space_alignment);
1336 assert(is_aligned(base_address, base_address_alignment),
1337 "Archive base address unaligned: " PTR_FORMAT ", needs alignment: %zu.",
1338 p2i(base_address), base_address_alignment);
1339
1340 size_t class_space_size = CompressedClassSpaceSize;
1341 assert(CompressedClassSpaceSize > 0 &&
1342 is_aligned(CompressedClassSpaceSize, class_space_alignment),
1343 "CompressedClassSpaceSize malformed: "
1344 SIZE_FORMAT, CompressedClassSpaceSize);
1345
1346 const size_t ccs_begin_offset = align_up(archive_space_size, class_space_alignment);
1347 const size_t gap_size = ccs_begin_offset - archive_space_size;
1348
1349 // Reduce class space size if it would not fit into the Klass encoding range
1350 constexpr size_t max_encoding_range_size = 4 * G;
1351 guarantee(archive_space_size < max_encoding_range_size - class_space_alignment, "Archive too large");
1352 if ((archive_space_size + gap_size + class_space_size) > max_encoding_range_size) {
1353 class_space_size = align_down(max_encoding_range_size - archive_space_size - gap_size, class_space_alignment);
1354 log_info(metaspace)("CDS initialization: reducing class space size from " SIZE_FORMAT " to " SIZE_FORMAT,
1355 CompressedClassSpaceSize, class_space_size);
1356 FLAG_SET_ERGO(CompressedClassSpaceSize, class_space_size);
1357 }
1358
1359 const size_t total_range_size =
1360 archive_space_size + gap_size + class_space_size;
1361
1362 assert(total_range_size > ccs_begin_offset, "must be");
1363 if (use_windows_memory_mapping() && use_archive_base_addr) {
1364 if (base_address != nullptr) {
1365 // On Windows, we cannot safely split a reserved memory space into two (see JDK-8255917).
1366 // Hence, we optimistically reserve archive space and class space side-by-side. We only
1367 // do this for use_archive_base_addr=true since for use_archive_base_addr=false case
1368 // caller will not split the combined space for mapping, instead read the archive data
1369 // via sequential file IO.
1370 address ccs_base = base_address + archive_space_size + gap_size;
1371 archive_space_rs = ReservedSpace(archive_space_size, archive_space_alignment,
1372 os::vm_page_size(), (char*)base_address);
1373 class_space_rs = ReservedSpace(class_space_size, class_space_alignment,
1374 os::vm_page_size(), (char*)ccs_base);
1375 }
1376 if (!archive_space_rs.is_reserved() || !class_space_rs.is_reserved()) {
1377 release_reserved_spaces(total_space_rs, archive_space_rs, class_space_rs);
1378 return nullptr;
1379 }
1380 // NMT: fix up the space tags
1381 MemTracker::record_virtual_memory_tag(archive_space_rs.base(), mtClassShared);
1382 MemTracker::record_virtual_memory_tag(class_space_rs.base(), mtClass);
1383 } else {
1384 if (use_archive_base_addr && base_address != nullptr) {
1385 total_space_rs = ReservedSpace(total_range_size, base_address_alignment,
1386 os::vm_page_size(), (char*) base_address);
1387 } else {
1388 // We did not manage to reserve at the preferred address, or were instructed to relocate. In that
1389 // case we reserve wherever possible, but the start address needs to be encodable as narrow Klass
1390 // encoding base since the archived heap objects contain nKlass IDs pre-calculated toward the start
1391 // of the shared Metaspace. That prevents us from using zero-based encoding and therefore we won't
1392 // try allocating in low-address regions.
1393 total_space_rs = Metaspace::reserve_address_space_for_compressed_classes(total_range_size, false /* optimize_for_zero_base */);
1394 }
1395
1396 if (!total_space_rs.is_reserved()) {
1397 return nullptr;
1398 }
1399
1400 // Paranoid checks:
1401 assert(base_address == nullptr || (address)total_space_rs.base() == base_address,
1402 "Sanity (" PTR_FORMAT " vs " PTR_FORMAT ")", p2i(base_address), p2i(total_space_rs.base()));
1403 assert(is_aligned(total_space_rs.base(), base_address_alignment), "Sanity");
1404 assert(total_space_rs.size() == total_range_size, "Sanity");
1405
1406 // Now split up the space into ccs and cds archive. For simplicity, just leave
1407 // the gap reserved at the end of the archive space. Do not do real splitting.
1408 archive_space_rs = total_space_rs.first_part(ccs_begin_offset,
1409 (size_t)archive_space_alignment);
1410 class_space_rs = total_space_rs.last_part(ccs_begin_offset);
1411 MemTracker::record_virtual_memory_split_reserved(total_space_rs.base(), total_space_rs.size(),
1412 ccs_begin_offset, mtClassShared, mtClass);
1413 }
1414 assert(is_aligned(archive_space_rs.base(), archive_space_alignment), "Sanity");
1415 assert(is_aligned(archive_space_rs.size(), archive_space_alignment), "Sanity");
1416 assert(is_aligned(class_space_rs.base(), class_space_alignment), "Sanity");
1417 assert(is_aligned(class_space_rs.size(), class_space_alignment), "Sanity");
1418
1419
1420 return archive_space_rs.base();
1421
1422 #else
1423 ShouldNotReachHere();
1424 return nullptr;
1425 #endif
1426
1427 }
1428
1429 void MetaspaceShared::release_reserved_spaces(ReservedSpace& total_space_rs,
1430 ReservedSpace& archive_space_rs,
1431 ReservedSpace& class_space_rs) {
1432 if (total_space_rs.is_reserved()) {
1433 log_debug(cds)("Released shared space (archive + class) " INTPTR_FORMAT, p2i(total_space_rs.base()));
1434 total_space_rs.release();
1435 } else {
1436 if (archive_space_rs.is_reserved()) {
1437 log_debug(cds)("Released shared space (archive) " INTPTR_FORMAT, p2i(archive_space_rs.base()));
1438 archive_space_rs.release();
1439 }
1440 if (class_space_rs.is_reserved()) {
1441 log_debug(cds)("Released shared space (classes) " INTPTR_FORMAT, p2i(class_space_rs.base()));
1442 class_space_rs.release();
1443 }
1444 }
1445 }
1446
1447 static int archive_regions[] = { MetaspaceShared::rw, MetaspaceShared::ro };
1448 static int archive_regions_count = 2;
1449
1450 MapArchiveResult MetaspaceShared::map_archive(FileMapInfo* mapinfo, char* mapped_base_address, ReservedSpace rs) {
1451 assert(CDSConfig::is_using_archive(), "must be runtime");
1452 if (mapinfo == nullptr) {
1453 return MAP_ARCHIVE_SUCCESS; // The dynamic archive has not been specified. No error has happened -- trivially succeeded.
1454 }
1455
1456 mapinfo->set_is_mapped(false);
1457 if (mapinfo->core_region_alignment() != (size_t)core_region_alignment()) {
1458 log_info(cds)("Unable to map CDS archive -- core_region_alignment() expected: " SIZE_FORMAT
1459 " actual: " SIZE_FORMAT, mapinfo->core_region_alignment(), core_region_alignment());
1460 return MAP_ARCHIVE_OTHER_FAILURE;
1461 }
1462
1463 MapArchiveResult result =
1464 mapinfo->map_regions(archive_regions, archive_regions_count, mapped_base_address, rs);
1465
1466 if (result != MAP_ARCHIVE_SUCCESS) {
1467 unmap_archive(mapinfo);
1468 return result;
1469 }
1470
1471 if (!mapinfo->validate_shared_path_table()) {
1472 unmap_archive(mapinfo);
1473 return MAP_ARCHIVE_OTHER_FAILURE;
1474 }
1475
1476 mapinfo->set_is_mapped(true);
1477 return MAP_ARCHIVE_SUCCESS;
1478 }
1479
1480 void MetaspaceShared::unmap_archive(FileMapInfo* mapinfo) {
1481 assert(CDSConfig::is_using_archive(), "must be runtime");
1482 if (mapinfo != nullptr) {
1483 mapinfo->unmap_regions(archive_regions, archive_regions_count);
1484 mapinfo->unmap_region(MetaspaceShared::bm);
1485 mapinfo->set_is_mapped(false);
1486 }
1487 }
1488
1489 // For -XX:PrintSharedArchiveAndExit
1490 class CountSharedSymbols : public SymbolClosure {
1491 private:
1492 int _count;
1493 public:
1494 CountSharedSymbols() : _count(0) {}
1495 void do_symbol(Symbol** sym) {
1496 _count++;
1497 }
1498 int total() { return _count; }
1499
1500 };
1501
1502 // Read the miscellaneous data from the shared file, and
1503 // serialize it out to its various destinations.
1504
1505 void MetaspaceShared::initialize_shared_spaces() {
1506 FileMapInfo *static_mapinfo = FileMapInfo::current_info();
1507
1508 // Verify various attributes of the archive, plus initialize the
1509 // shared string/symbol tables.
1510 char* buffer = static_mapinfo->serialized_data();
1511 intptr_t* array = (intptr_t*)buffer;
1512 ReadClosure rc(&array);
1513 serialize(&rc);
1514
1515 // Finish up archived heap initialization. These must be
1516 // done after ReadClosure.
1517 static_mapinfo->patch_heap_embedded_pointers();
1518 ArchiveHeapLoader::finish_initialization();
1519 Universe::load_archived_object_instances();
1520
1521 // Close the mapinfo file
1522 static_mapinfo->close();
1523
1524 static_mapinfo->unmap_region(MetaspaceShared::bm);
1525
1526 FileMapInfo *dynamic_mapinfo = FileMapInfo::dynamic_info();
1527 if (dynamic_mapinfo != nullptr) {
1528 intptr_t* buffer = (intptr_t*)dynamic_mapinfo->serialized_data();
1529 ReadClosure rc(&buffer);
1530 ArchiveBuilder::serialize_dynamic_archivable_items(&rc);
1531 DynamicArchive::setup_array_klasses();
1532 dynamic_mapinfo->close();
1533 dynamic_mapinfo->unmap_region(MetaspaceShared::bm);
1534 }
1535
1536 // Set up LambdaFormInvokers::_lambdaform_lines for dynamic dump
1537 if (CDSConfig::is_dumping_dynamic_archive()) {
1538 // Read stored LF format lines stored in static archive
1539 LambdaFormInvokers::read_static_archive_invokers();
1540 }
1541
1542 if (PrintSharedArchiveAndExit) {
1543 // Print archive names
1544 if (dynamic_mapinfo != nullptr) {
1545 tty->print_cr("\n\nBase archive name: %s", CDSConfig::static_archive_path());
1546 tty->print_cr("Base archive version %d", static_mapinfo->version());
1547 } else {
1548 tty->print_cr("Static archive name: %s", static_mapinfo->full_path());
1549 tty->print_cr("Static archive version %d", static_mapinfo->version());
1550 }
1551
1552 SystemDictionaryShared::print_shared_archive(tty);
1553 if (dynamic_mapinfo != nullptr) {
1554 tty->print_cr("\n\nDynamic archive name: %s", dynamic_mapinfo->full_path());
1555 tty->print_cr("Dynamic archive version %d", dynamic_mapinfo->version());
1556 SystemDictionaryShared::print_shared_archive(tty, false/*dynamic*/);
1557 }
1558
1559 // collect shared symbols and strings
1560 CountSharedSymbols cl;
1561 SymbolTable::shared_symbols_do(&cl);
1562 tty->print_cr("Number of shared symbols: %d", cl.total());
1563 tty->print_cr("Number of shared strings: %zu", StringTable::shared_entry_count());
1564 tty->print_cr("VM version: %s\r\n", static_mapinfo->vm_version());
1565 if (FileMapInfo::current_info() == nullptr || _archive_loading_failed) {
1566 tty->print_cr("archive is invalid");
1567 vm_exit(1);
1568 } else {
1569 tty->print_cr("archive is valid");
1570 vm_exit(0);
1571 }
1572 }
1573 }
1574
1575 // JVM/TI RedefineClasses() support:
1576 bool MetaspaceShared::remap_shared_readonly_as_readwrite() {
1577 assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
1578
1579 if (CDSConfig::is_using_archive()) {
1580 // remap the shared readonly space to shared readwrite, private
1581 FileMapInfo* mapinfo = FileMapInfo::current_info();
1582 if (!mapinfo->remap_shared_readonly_as_readwrite()) {
1583 return false;
1584 }
1585 if (FileMapInfo::dynamic_info() != nullptr) {
1586 mapinfo = FileMapInfo::dynamic_info();
1587 if (!mapinfo->remap_shared_readonly_as_readwrite()) {
1588 return false;
1589 }
1590 }
1591 _remapped_readwrite = true;
1592 }
1593 return true;
1594 }
1595
1596 void MetaspaceShared::print_on(outputStream* st) {
1597 if (CDSConfig::is_using_archive()) {
1598 st->print("CDS archive(s) mapped at: ");
1599 address base = (address)MetaspaceObj::shared_metaspace_base();
1600 address static_top = (address)_shared_metaspace_static_top;
1601 address top = (address)MetaspaceObj::shared_metaspace_top();
1602 st->print("[" PTR_FORMAT "-" PTR_FORMAT "-" PTR_FORMAT "), ", p2i(base), p2i(static_top), p2i(top));
1603 st->print("size " SIZE_FORMAT ", ", top - base);
1604 st->print("SharedBaseAddress: " PTR_FORMAT ", ArchiveRelocationMode: %d.", SharedBaseAddress, ArchiveRelocationMode);
1605 } else {
1606 st->print("CDS archive(s) not mapped");
1607 }
1608 st->cr();
1609 }