595 lines
26 KiB
C++
595 lines
26 KiB
C++
/*
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* Copyright (c) 2003, 2020, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef SHARE_MEMORY_FILEMAP_HPP
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#define SHARE_MEMORY_FILEMAP_HPP
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#include "classfile/classLoader.hpp"
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#include "include/cds.h"
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#include "memory/metaspaceShared.hpp"
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#include "memory/metaspace.hpp"
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#include "oops/compressedOops.hpp"
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#include "utilities/align.hpp"
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// Layout of the file:
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// header: dump of archive instance plus versioning info, datestamp, etc.
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// [magic # = 0xF00BABA2]
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// ... padding to align on page-boundary
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// read-write space
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// read-only space
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// misc data (block offset table, string table, symbols, dictionary, etc.)
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// tag(666)
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static const int JVM_IDENT_MAX = 256;
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class CHeapBitMap;
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class SharedClassPathEntry {
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enum {
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modules_image_entry,
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jar_entry,
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signed_jar_entry,
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dir_entry,
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non_existent_entry,
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unknown_entry
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};
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void set_name(const char* name, TRAPS);
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u1 _type;
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bool _is_module_path;
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bool _from_class_path_attr;
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time_t _timestamp; // jar timestamp, 0 if is directory, modules image or other
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int64_t _filesize; // jar/jimage file size, -1 if is directory, -2 if other
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Array<char>* _name;
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Array<u1>* _manifest;
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public:
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void init(bool is_modules_image, bool is_module_path, ClassPathEntry* cpe, TRAPS);
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void init_as_non_existent(const char* path, TRAPS);
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void metaspace_pointers_do(MetaspaceClosure* it);
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bool validate(bool is_class_path = true) const;
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// The _timestamp only gets set for jar files.
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bool has_timestamp() const {
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return _timestamp != 0;
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}
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bool is_dir() const { return _type == dir_entry; }
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bool is_modules_image() const { return _type == modules_image_entry; }
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bool is_jar() const { return _type == jar_entry; }
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bool is_signed() const { return _type == signed_jar_entry; }
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void set_is_signed() {
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_type = signed_jar_entry;
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}
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bool from_class_path_attr() { return _from_class_path_attr; }
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time_t timestamp() const { return _timestamp; }
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const char* name() const;
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const char* manifest() const {
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return (_manifest == NULL) ? NULL : (const char*)_manifest->data();
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}
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int manifest_size() const {
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return (_manifest == NULL) ? 0 : _manifest->length();
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}
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void set_manifest(Array<u1>* manifest) {
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_manifest = manifest;
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}
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bool check_non_existent() const;
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void copy_from(SharedClassPathEntry* ent, ClassLoaderData* loader_data, TRAPS);
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bool in_named_module() {
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return is_modules_image() || // modules image doesn't contain unnamed modules
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_is_module_path; // module path doesn't contain unnamed modules
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}
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};
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struct ArchiveHeapOopmapInfo {
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address _oopmap; // bitmap for relocating embedded oops
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size_t _offset; // this oopmap is stored at this offset from the bottom of the BM region
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size_t _oopmap_size_in_bits;
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size_t _oopmap_size_in_bytes;
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};
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class SharedPathTable {
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Array<u8>* _table;
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int _size;
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public:
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SharedPathTable() : _table(NULL), _size(0) {}
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SharedPathTable(Array<u8>* table, int size) : _table(table), _size(size) {}
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void dumptime_init(ClassLoaderData* loader_data, Thread* THREAD);
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void metaspace_pointers_do(MetaspaceClosure* it);
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int size() {
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return _size;
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}
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SharedClassPathEntry* path_at(int index) {
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if (index < 0) {
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return NULL;
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}
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assert(index < _size, "sanity");
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char* p = (char*)_table->data();
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p += sizeof(SharedClassPathEntry) * index;
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return (SharedClassPathEntry*)p;
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}
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Array<u8>* table() {return _table;}
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void set_table(Array<u8>* table) {_table = table;}
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};
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class FileMapRegion: private CDSFileMapRegion {
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void assert_is_heap_region() const {
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assert(_is_heap_region, "must be heap region");
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}
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void assert_is_not_heap_region() const {
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assert(!_is_heap_region, "must not be heap region");
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}
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public:
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static FileMapRegion* cast(CDSFileMapRegion* p) {
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return (FileMapRegion*)p;
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}
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// Accessors
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int crc() const { return _crc; }
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size_t file_offset() const { return _file_offset; }
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size_t mapping_offset() const { return _mapping_offset; }
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size_t mapping_end_offset() const { return _mapping_offset + used_aligned(); }
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size_t used() const { return _used; }
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size_t used_aligned() const; // aligned up to os::vm_allocation_granularity()
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char* mapped_base() const { assert_is_not_heap_region(); return _mapped_base; }
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char* mapped_end() const { return mapped_base() + used_aligned(); }
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bool read_only() const { return _read_only != 0; }
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bool allow_exec() const { return _allow_exec != 0; }
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bool mapped_from_file() const { return _mapped_from_file != 0; }
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size_t oopmap_offset() const { assert_is_heap_region(); return _oopmap_offset; }
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size_t oopmap_size_in_bits() const { assert_is_heap_region(); return _oopmap_size_in_bits; }
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void set_file_offset(size_t s) { _file_offset = s; }
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void set_read_only(bool v) { _read_only = v; }
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void set_mapped_base(char* p) { _mapped_base = p; }
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void set_mapped_from_file(bool v) { _mapped_from_file = v; }
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void init(int region_index, char* base, size_t size, bool read_only,
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bool allow_exec, int crc);
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void init_oopmap(size_t oopmap_offset, size_t size_in_bits) {
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_oopmap_offset = oopmap_offset;
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_oopmap_size_in_bits = size_in_bits;
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}
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};
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class FileMapHeader: private CDSFileMapHeaderBase {
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friend class CDSOffsets;
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friend class VMStructs;
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size_t _header_size;
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// The following fields record the states of the VM during dump time.
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// They are compared with the runtime states to see if the archive
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// can be used.
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size_t _alignment; // how shared archive should be aligned
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int _obj_alignment; // value of ObjectAlignmentInBytes
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address _narrow_oop_base; // compressed oop encoding base
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int _narrow_oop_shift; // compressed oop encoding shift
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bool _compact_strings; // value of CompactStrings
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uintx _max_heap_size; // java max heap size during dumping
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CompressedOops::Mode _narrow_oop_mode; // compressed oop encoding mode
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int _narrow_klass_shift; // save narrow klass base and shift
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bool _compressed_oops; // save the flag UseCompressedOops
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bool _compressed_class_ptrs; // save the flag UseCompressedClassPointers
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size_t _cloned_vtables_offset; // The address of the first cloned vtable
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size_t _serialized_data_offset; // Data accessed using {ReadClosure,WriteClosure}::serialize()
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size_t _i2i_entry_code_buffers_offset;
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size_t _i2i_entry_code_buffers_size;
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address _heap_end; // heap end at dump time.
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bool _base_archive_is_default; // indicates if the base archive is the system default one
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// The following fields are all sanity checks for whether this archive
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// will function correctly with this JVM and the bootclasspath it's
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// invoked with.
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char _jvm_ident[JVM_IDENT_MAX]; // identifier string of the jvm that created this dump
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// size of the base archive name including NULL terminator
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size_t _base_archive_name_size;
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// The following is a table of all the boot/app/module path entries that were used
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// during dumping. At run time, we validate these entries according to their
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// SharedClassPathEntry::_type. See:
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// check_nonempty_dir_in_shared_path_table()
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// validate_shared_path_table()
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// validate_non_existent_class_paths()
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size_t _shared_path_table_offset;
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int _shared_path_table_size;
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jshort _app_class_paths_start_index; // Index of first app classpath entry
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jshort _app_module_paths_start_index; // Index of first module path entry
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jshort _num_module_paths; // number of module path entries
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jshort _max_used_path_index; // max path index referenced during CDS dump
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bool _verify_local; // BytecodeVerificationLocal setting
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bool _verify_remote; // BytecodeVerificationRemote setting
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bool _has_platform_or_app_classes; // Archive contains app classes
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char* _requested_base_address; // Archive relocation is not necessary if we map with this base address.
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char* _mapped_base_address; // Actual base address where archive is mapped.
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bool _allow_archiving_with_java_agent; // setting of the AllowArchivingWithJavaAgent option
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bool _use_optimized_module_handling;// No module-relation VM options were specified, so we can skip
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// some expensive operations.
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bool _use_full_module_graph; // Can we use the full archived module graph?
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size_t _ptrmap_size_in_bits; // Size of pointer relocation bitmap
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char* from_mapped_offset(size_t offset) const {
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return mapped_base_address() + offset;
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}
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void set_mapped_offset(char* p, size_t *offset) {
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assert(p >= mapped_base_address(), "sanity");
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*offset = p - mapped_base_address();
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}
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public:
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// Accessors -- fields declared in CDSFileMapHeaderBase
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unsigned int magic() const {return _magic;}
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int crc() const { return _crc; }
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int version() const { return _version; }
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void set_crc(int crc_value) { _crc = crc_value; }
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void set_version(int v) { _version = v; }
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// Accessors -- fields declared in FileMapHeader
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size_t header_size() const { return _header_size; }
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size_t alignment() const { return _alignment; }
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int obj_alignment() const { return _obj_alignment; }
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address narrow_oop_base() const { return _narrow_oop_base; }
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int narrow_oop_shift() const { return _narrow_oop_shift; }
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bool compact_strings() const { return _compact_strings; }
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uintx max_heap_size() const { return _max_heap_size; }
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CompressedOops::Mode narrow_oop_mode() const { return _narrow_oop_mode; }
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int narrow_klass_shift() const { return _narrow_klass_shift; }
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address narrow_klass_base() const { return (address)mapped_base_address(); }
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char* cloned_vtables() const { return from_mapped_offset(_cloned_vtables_offset); }
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char* serialized_data() const { return from_mapped_offset(_serialized_data_offset); }
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address i2i_entry_code_buffers() const { return (address)from_mapped_offset(_i2i_entry_code_buffers_offset); }
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size_t i2i_entry_code_buffers_size() const { return _i2i_entry_code_buffers_size; }
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address heap_end() const { return _heap_end; }
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bool base_archive_is_default() const { return _base_archive_is_default; }
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const char* jvm_ident() const { return _jvm_ident; }
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size_t base_archive_name_size() const { return _base_archive_name_size; }
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char* requested_base_address() const { return _requested_base_address; }
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char* mapped_base_address() const { return _mapped_base_address; }
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bool has_platform_or_app_classes() const { return _has_platform_or_app_classes; }
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size_t ptrmap_size_in_bits() const { return _ptrmap_size_in_bits; }
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bool compressed_oops() const { return _compressed_oops; }
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bool compressed_class_pointers() const { return _compressed_class_ptrs; }
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// FIXME: These should really return int
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jshort max_used_path_index() const { return _max_used_path_index; }
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jshort app_module_paths_start_index() const { return _app_module_paths_start_index; }
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jshort app_class_paths_start_index() const { return _app_class_paths_start_index; }
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jshort num_module_paths() const { return _num_module_paths; }
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void set_has_platform_or_app_classes(bool v) { _has_platform_or_app_classes = v; }
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void set_cloned_vtables(char* p) { set_mapped_offset(p, &_cloned_vtables_offset); }
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void set_serialized_data(char* p) { set_mapped_offset(p, &_serialized_data_offset); }
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void set_base_archive_name_size(size_t s) { _base_archive_name_size = s; }
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void set_base_archive_is_default(bool b) { _base_archive_is_default = b; }
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void set_header_size(size_t s) { _header_size = s; }
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void set_ptrmap_size_in_bits(size_t s) { _ptrmap_size_in_bits = s; }
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void set_mapped_base_address(char* p) { _mapped_base_address = p; }
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void set_i2i_entry_code_buffers(address p, size_t s) {
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set_mapped_offset((char*)p, &_i2i_entry_code_buffers_offset);
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_i2i_entry_code_buffers_size = s;
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}
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void set_shared_path_table(SharedPathTable table) {
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set_mapped_offset((char*)table.table(), &_shared_path_table_offset);
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_shared_path_table_size = table.size();
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}
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void set_final_requested_base(char* b) {
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_requested_base_address = b;
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_mapped_base_address = 0;
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}
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SharedPathTable shared_path_table() const {
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return SharedPathTable((Array<u8>*)from_mapped_offset(_shared_path_table_offset),
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_shared_path_table_size);
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}
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bool validate();
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int compute_crc();
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FileMapRegion* space_at(int i) {
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assert(is_valid_region(i), "invalid region");
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return FileMapRegion::cast(&_space[i]);
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}
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void populate(FileMapInfo* info, size_t alignment);
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static bool is_valid_region(int region) {
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return (0 <= region && region < NUM_CDS_REGIONS);
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}
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};
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class FileMapInfo : public CHeapObj<mtInternal> {
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private:
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friend class ManifestStream;
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friend class VMStructs;
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friend class CDSOffsets;
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friend class FileMapHeader;
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bool _is_static;
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bool _file_open;
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bool _is_mapped;
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int _fd;
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size_t _file_offset;
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const char* _full_path;
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const char* _base_archive_name;
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FileMapHeader* _header;
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// TODO: Probably change the following to be non-static
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static SharedPathTable _shared_path_table;
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static SharedPathTable _saved_shared_path_table;
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static bool _validating_shared_path_table;
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// FileMapHeader describes the shared space data in the file to be
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// mapped. This structure gets written to a file. It is not a class, so
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// that the compilers don't add any compiler-private data to it.
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static FileMapInfo* _current_info;
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static FileMapInfo* _dynamic_archive_info;
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static bool _heap_pointers_need_patching;
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static bool _memory_mapping_failed;
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static GrowableArray<const char*>* _non_existent_class_paths;
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FileMapHeader *header() const { return _header; }
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public:
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static bool get_base_archive_name_from_header(const char* archive_name,
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int* size, char** base_archive_name);
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static bool check_archive(const char* archive_name, bool is_static);
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static SharedPathTable shared_path_table() {
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return _shared_path_table;
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}
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static SharedPathTable saved_shared_path_table() {
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return _saved_shared_path_table;
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}
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bool init_from_file(int fd);
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static void metaspace_pointers_do(MetaspaceClosure* it, bool use_copy = true);
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void log_paths(const char* msg, int start_idx, int end_idx);
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FileMapInfo(bool is_static);
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~FileMapInfo();
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// Accessors
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int compute_header_crc() const { return header()->compute_crc(); }
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void set_header_crc(int crc) { header()->set_crc(crc); }
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int space_crc(int i) const { return space_at(i)->crc(); }
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void populate_header(size_t alignment);
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bool validate_header();
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void invalidate();
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int crc() const { return header()->crc(); }
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int version() const { return header()->version(); }
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size_t alignment() const { return header()->alignment(); }
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address narrow_oop_base() const { return header()->narrow_oop_base(); }
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int narrow_oop_shift() const { return header()->narrow_oop_shift(); }
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uintx max_heap_size() const { return header()->max_heap_size(); }
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address narrow_klass_base() const { return header()->narrow_klass_base(); }
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int narrow_klass_shift() const { return header()->narrow_klass_shift(); }
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CompressedOops::Mode narrow_oop_mode() const { return header()->narrow_oop_mode(); }
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jshort app_module_paths_start_index() const { return header()->app_module_paths_start_index(); }
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jshort app_class_paths_start_index() const { return header()->app_class_paths_start_index(); }
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char* cloned_vtables() const { return header()->cloned_vtables(); }
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void set_cloned_vtables(char* p) const { header()->set_cloned_vtables(p); }
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char* serialized_data() const { return header()->serialized_data(); }
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void set_serialized_data(char* p) const { header()->set_serialized_data(p); }
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bool is_file_position_aligned() const;
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void align_file_position();
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address i2i_entry_code_buffers() const { return header()->i2i_entry_code_buffers(); }
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size_t i2i_entry_code_buffers_size() const { return header()->i2i_entry_code_buffers_size(); }
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void set_i2i_entry_code_buffers(address addr, size_t s) const {
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header()->set_i2i_entry_code_buffers(addr, s);
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}
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bool is_static() const { return _is_static; }
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bool is_mapped() const { return _is_mapped; }
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void set_is_mapped(bool v) { _is_mapped = v; }
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const char* full_path() const { return _full_path; }
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void set_final_requested_base(char* b);
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char* requested_base_address() const { return header()->requested_base_address(); }
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|
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class DynamicArchiveHeader* dynamic_header() const {
|
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assert(!is_static(), "must be");
|
|
return (DynamicArchiveHeader*)header();
|
|
}
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void set_has_platform_or_app_classes(bool v) {
|
|
header()->set_has_platform_or_app_classes(v);
|
|
}
|
|
bool has_platform_or_app_classes() const {
|
|
return header()->has_platform_or_app_classes();
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}
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static FileMapInfo* current_info() {
|
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CDS_ONLY(return _current_info;)
|
|
NOT_CDS(return NULL;)
|
|
}
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|
|
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static void set_current_info(FileMapInfo* info) {
|
|
CDS_ONLY(_current_info = info;)
|
|
}
|
|
|
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static FileMapInfo* dynamic_info() {
|
|
CDS_ONLY(return _dynamic_archive_info;)
|
|
NOT_CDS(return NULL;)
|
|
}
|
|
|
|
static void assert_mark(bool check);
|
|
|
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// File manipulation.
|
|
bool initialize() NOT_CDS_RETURN_(false);
|
|
bool open_for_read();
|
|
void open_for_write(const char* path = NULL);
|
|
void write_header();
|
|
void write_region(int region, char* base, size_t size,
|
|
bool read_only, bool allow_exec);
|
|
void write_bitmap_region(const CHeapBitMap* ptrmap,
|
|
GrowableArray<ArchiveHeapOopmapInfo>* closed_oopmaps,
|
|
GrowableArray<ArchiveHeapOopmapInfo>* open_oopmaps);
|
|
size_t write_archive_heap_regions(GrowableArray<MemRegion> *heap_mem,
|
|
GrowableArray<ArchiveHeapOopmapInfo> *oopmaps,
|
|
int first_region_id, int max_num_regions);
|
|
void write_bytes(const void* buffer, size_t count);
|
|
void write_bytes_aligned(const void* buffer, size_t count);
|
|
size_t read_bytes(void* buffer, size_t count);
|
|
MapArchiveResult map_regions(int regions[], int num_regions, char* mapped_base_address, ReservedSpace rs);
|
|
void unmap_regions(int regions[], int num_regions);
|
|
void map_heap_regions() NOT_CDS_JAVA_HEAP_RETURN;
|
|
void fixup_mapped_heap_regions() NOT_CDS_JAVA_HEAP_RETURN;
|
|
void patch_archived_heap_embedded_pointers() NOT_CDS_JAVA_HEAP_RETURN;
|
|
void patch_archived_heap_embedded_pointers(MemRegion* ranges, int num_ranges,
|
|
int first_region_idx) NOT_CDS_JAVA_HEAP_RETURN;
|
|
bool has_heap_regions() NOT_CDS_JAVA_HEAP_RETURN_(false);
|
|
MemRegion get_heap_regions_range_with_current_oop_encoding_mode() NOT_CDS_JAVA_HEAP_RETURN_(MemRegion());
|
|
void unmap_region(int i);
|
|
bool verify_region_checksum(int i);
|
|
void close();
|
|
bool is_open() { return _file_open; }
|
|
ReservedSpace reserve_shared_memory();
|
|
|
|
// JVM/TI RedefineClasses() support:
|
|
// Remap the shared readonly space to shared readwrite, private.
|
|
bool remap_shared_readonly_as_readwrite();
|
|
|
|
// Errors.
|
|
static void fail_stop(const char *msg, ...) ATTRIBUTE_PRINTF(1, 2);
|
|
static void fail_continue(const char *msg, ...) ATTRIBUTE_PRINTF(1, 2);
|
|
static bool memory_mapping_failed() {
|
|
CDS_ONLY(return _memory_mapping_failed;)
|
|
NOT_CDS(return false;)
|
|
}
|
|
bool is_in_shared_region(const void* p, int idx) NOT_CDS_RETURN_(false);
|
|
|
|
// Stop CDS sharing and unmap CDS regions.
|
|
static void stop_sharing_and_unmap(const char* msg);
|
|
|
|
static void allocate_shared_path_table();
|
|
static void copy_shared_path_table(ClassLoaderData* loader_data, Thread* THREAD);
|
|
static int add_shared_classpaths(int i, const char* which, ClassPathEntry *cpe, TRAPS);
|
|
static void check_nonempty_dir_in_shared_path_table();
|
|
bool validate_shared_path_table();
|
|
void validate_non_existent_class_paths();
|
|
static void set_shared_path_table(FileMapInfo* info) {
|
|
_shared_path_table = info->header()->shared_path_table();
|
|
}
|
|
static void update_jar_manifest(ClassPathEntry *cpe, SharedClassPathEntry* ent, TRAPS);
|
|
static int num_non_existent_class_paths();
|
|
static void record_non_existent_class_path_entry(const char* path);
|
|
|
|
#if INCLUDE_JVMTI
|
|
static ClassFileStream* open_stream_for_jvmti(InstanceKlass* ik, Handle class_loader, TRAPS);
|
|
#endif
|
|
|
|
static SharedClassPathEntry* shared_path(int index) {
|
|
return _shared_path_table.path_at(index);
|
|
}
|
|
|
|
static const char* shared_path_name(int index) {
|
|
assert(index >= 0, "Sanity");
|
|
return shared_path(index)->name();
|
|
}
|
|
|
|
static int get_number_of_shared_paths() {
|
|
return _shared_path_table.size();
|
|
}
|
|
|
|
static int get_module_shared_path_index(Symbol* location) NOT_CDS_RETURN_(-1);
|
|
|
|
char* region_addr(int idx);
|
|
|
|
// The offset of the first core region in the archive, relative to SharedBaseAddress
|
|
size_t mapping_base_offset() const { return first_core_space()->mapping_offset(); }
|
|
// The offset of the (exclusive) end of the last core region in this archive, relative to SharedBaseAddress
|
|
size_t mapping_end_offset() const { return last_core_space()->mapping_end_offset(); }
|
|
|
|
char* mapped_base() const { return first_core_space()->mapped_base(); }
|
|
char* mapped_end() const { return last_core_space()->mapped_end(); }
|
|
|
|
// Non-zero if the archive needs to be mapped a non-default location due to ASLR.
|
|
intx relocation_delta() const {
|
|
return header()->mapped_base_address() - header()->requested_base_address();
|
|
}
|
|
|
|
FileMapRegion* first_core_space() const;
|
|
FileMapRegion* last_core_space() const;
|
|
|
|
FileMapRegion* space_at(int i) const {
|
|
return header()->space_at(i);
|
|
}
|
|
|
|
private:
|
|
void seek_to_position(size_t pos);
|
|
char* skip_first_path_entry(const char* path) NOT_CDS_RETURN_(NULL);
|
|
int num_paths(const char* path) NOT_CDS_RETURN_(0);
|
|
GrowableArray<const char*>* create_path_array(const char* path) NOT_CDS_RETURN_(NULL);
|
|
bool classpath_failure(const char* msg, const char* name) NOT_CDS_RETURN_(false);
|
|
bool check_paths(int shared_path_start_idx, int num_paths,
|
|
GrowableArray<const char*>* rp_array) NOT_CDS_RETURN_(false);
|
|
bool validate_boot_class_paths() NOT_CDS_RETURN_(false);
|
|
bool validate_app_class_paths(int shared_app_paths_len) NOT_CDS_RETURN_(false);
|
|
bool map_heap_data(MemRegion **heap_mem, int first, int max, int* num,
|
|
bool is_open = false) NOT_CDS_JAVA_HEAP_RETURN_(false);
|
|
bool region_crc_check(char* buf, size_t size, int expected_crc) NOT_CDS_RETURN_(false);
|
|
void dealloc_archive_heap_regions(MemRegion* regions, int num) NOT_CDS_JAVA_HEAP_RETURN;
|
|
void map_heap_regions_impl() NOT_CDS_JAVA_HEAP_RETURN;
|
|
char* map_bitmap_region();
|
|
MapArchiveResult map_region(int i, intx addr_delta, char* mapped_base_address, ReservedSpace rs);
|
|
bool read_region(int i, char* base, size_t size);
|
|
bool relocate_pointers(intx addr_delta);
|
|
static size_t set_oopmaps_offset(GrowableArray<ArchiveHeapOopmapInfo> *oopmaps, size_t curr_size);
|
|
static size_t write_oopmaps(GrowableArray<ArchiveHeapOopmapInfo> *oopmaps, size_t curr_offset, uintptr_t* buffer);
|
|
|
|
// The starting address of spc, as calculated with CompressedOop::decode_non_null()
|
|
address start_address_as_decoded_with_current_oop_encoding_mode(FileMapRegion* spc) {
|
|
return decode_start_address(spc, true);
|
|
}
|
|
|
|
// The starting address of spc, as calculated with HeapShared::decode_from_archive()
|
|
address start_address_as_decoded_from_archive(FileMapRegion* spc) {
|
|
return decode_start_address(spc, false);
|
|
}
|
|
|
|
address decode_start_address(FileMapRegion* spc, bool with_current_oop_encoding_mode);
|
|
|
|
#if INCLUDE_JVMTI
|
|
static ClassPathEntry** _classpath_entries_for_jvmti;
|
|
static ClassPathEntry* get_classpath_entry_for_jvmti(int i, TRAPS);
|
|
#endif
|
|
};
|
|
|
|
#endif // SHARE_MEMORY_FILEMAP_HPP
|