Quelle instanceOop.hpp Sprache: C

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#ifndef SHARE_OOPS_INSTANCEOOP_HPP
#define SHARE_OOPS_INSTANCEOOP_HPP

#include "oops/oop.hpp"
#include <type_traits>

// An instanceOop is an instance of a Java Class
// Evaluating "new HashTable()" will create an instanceOop.

class instanceOopDesc : public oopDesc {
public:
  // aligned header size.
  static int header_size() { return sizeof(instanceOopDesc)/HeapWordSize; }

  // If compressed, the offset of the fields of the instance may not be aligned.
  static int base_offset_in_bytes() {
    return (UseCompressedClassPointers) ?
            klass_gap_offset_in_bytes() :
            sizeof(instanceOopDesc);

  }
};

// See similar requirement for oopDesc.
static_assert(std::is_trivially_default_constructible<instanceOopDesc>::value, "required");

#endif // SHARE_OOPS_INSTANCEOOP_HPP

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