C++ (Cpp) write_bytes_aligned Exemples

Exemple #1

Fichier : filemap.cpp Projet : benbenolson/hotspot_9_mc

void FileMapInfo::write_region(int region, char* base, size_t size,
                               size_t capacity, bool read_only,
                               bool allow_exec) {
  struct FileMapInfo::FileMapHeader::space_info* si = &_header->_space[region];

  if (_file_open) {
    guarantee(si->_file_offset == _file_offset, "file offset mismatch.");
    if (PrintSharedSpaces) {
      tty->print_cr("Shared file region %d: 0x%6x bytes, addr " INTPTR_FORMAT
                    " file offset 0x%6x", region, size, base, _file_offset);
    }
  } else {
    si->_file_offset = _file_offset;
  }
  if (MetaspaceShared::is_string_region(region)) {
    assert((base - (char*)Universe::narrow_oop_base()) % HeapWordSize == 0, "Sanity");
    if (base != NULL) {
      si->_addr._offset = (intx)oopDesc::encode_heap_oop_not_null((oop)base);
    } else {
      si->_addr._offset = 0;
    }
  } else {
    si->_addr._base = base;
  }
  si->_used = size;
  si->_capacity = capacity;
  si->_read_only = read_only;
  si->_allow_exec = allow_exec;
  si->_crc = ClassLoader::crc32(0, base, (jint)size);
  write_bytes_aligned(base, (int)size);
}

Exemple #2

void FileMapInfo::write_region(int region, char* base, size_t size,
                               size_t capacity, bool read_only,
                               bool allow_exec) {
  struct FileMapInfo::FileMapHeader::space_info* si = &_header._space[region];

  if (_file_open) {
    guarantee(si->_file_offset == _file_offset, "file offset mismatch.");
    if (PrintSharedSpaces) {
      tty->print_cr("Shared file region %d: 0x%x bytes, addr 0x%x,"
                    " file offset 0x%x", region, size, base, _file_offset);
    }
  } else {
    si->_file_offset = _file_offset;
  }
  si->_base = base;
  si->_used = size;
  si->_capacity = capacity;
  si->_read_only = read_only;
  si->_allow_exec = allow_exec;
  write_bytes_aligned(base, (int)size);
}

Exemple #3

/**
 * 将jar包共享内存的映射信息头部写入映射信息文件classes.jas
 */
void FileMapInfo::write_header() {
  write_bytes_aligned(&_header, sizeof(FileMapHeader));
}