--- old/src/jdk.hotspot.agent/linux/native/libsaproc/ps_core.c 2018-04-25 08:29:40.549931000 +0530 +++ new/src/jdk.hotspot.agent/linux/native/libsaproc/ps_core.c 2018-04-25 08:29:40.365931000 +0530 @@ -212,29 +212,51 @@ // mapped. This structure gets written to a file. It is not a class, // so that the compilers don't add any compiler-private data to it. -#define NUM_SHARED_MAPS 4 +#define NUM_SHARED_MAPS 9 // Refer to FileMapInfo::_current_version in filemap.hpp -#define CURRENT_ARCHIVE_VERSION 1 +#define CURRENT_ARCHIVE_VERSION 3 + +typedef unsigned char* address; +typedef uintptr_t uintx; +typedef intptr_t intx; struct FileMapHeader { - int _magic; // identify file type. - int _version; // (from enum, above.) - size_t _alignment; // how shared archive should be aligned + int _magic; // identify file type. + int _crc; // header crc checksum. + int _version; // (from enum, above.) + size_t _alignment; // how shared archive should be aligned + int _obj_alignment; // value of ObjectAlignmentInBytes + address _narrow_oop_base; // compressed oop encoding base + int _narrow_oop_shift; // compressed oop encoding shift + bool _compact_strings; // value of CompactStrings + uintx _max_heap_size; // java max heap size during dumping + int _narrow_oop_mode; // compressed oop encoding mode + int _narrow_klass_shift; // save narrow klass base and shift + address _narrow_klass_base; + char* _misc_data_patching_start; + char* _read_only_tables_start; + address _cds_i2i_entry_code_buffers; + size_t _cds_i2i_entry_code_buffers_size; + size_t _core_spaces_size; // number of bytes allocated by the core spaces + // (mc, md, ro, rw and od). - struct space_info { - int _file_offset; // sizeof(this) rounded to vm page size - char* _base; // copy-on-write base address - size_t _capacity; // for validity checking - size_t _used; // for setting space top on read + struct space_info { + int _crc; // crc checksum of the current space + size_t _file_offset; // sizeof(this) rounded to vm page size + union { + char* _base; // copy-on-write base address + intx _offset; // offset from the compressed oop encoding base, only used + // by archive heap space + } _addr; + size_t _used; // for setting space top on read // 4991491 NOTICE These are C++ bool's in filemap.hpp and must match up with // the C type matching the C++ bool type on any given platform. // We assume the corresponding C type is char but licensees // may need to adjust the type of these fields. - char _read_only; // read only space? - char _allow_exec; // executable code in space? - + char _read_only; // read only space? + char _allow_exec; // executable code in space? } _space[NUM_SHARED_MAPS]; // Ignore the rest of the FileMapHeader. We don't need those fields here. @@ -381,7 +403,7 @@ // add read-only maps from classes.jsa to the list of maps for (m = 0; m < NUM_SHARED_MAPS; m++) { if (header._space[m]._read_only) { - base = (uintptr_t) header._space[m]._base; + base = (uintptr_t) header._space[m]._addr._base; // no need to worry about the fractional pages at-the-end. // possible fractional pages are handled by core_read_data. add_class_share_map_info(ph, (off_t) header._space[m]._file_offset,