src/hotspot/share/ci/ciArrayKlass.hpp - master - githubmirror/panama-vector

src/hotspot/share/ci/ciArrayKlass.hpp
75 строк2 KB
David Simms
8389219: Implement JEP 401: Value Objects (Preview)
31 июл 2026, 03:45
31 июл 2026, 03:45cc278db
/*
 * Copyright (c) 1999, 2026, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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#ifndef SHARE_CI_CIARRAYKLASS_HPP
#define SHARE_CI_CIARRAYKLASS_HPP

#include "ci/ciKlass.hpp"
#include "oops/arrayKlass.hpp"

// ciArrayKlass
//
// This class, and its subclasses represent Klass*s in the
// HotSpot virtual machine whose Klass part is an ArrayKlass.
class ciArrayKlass : public ciKlass {
  CI_PACKAGE_ACCESS
private:
  jint _dimension;

protected:
  ciArrayKlass(Klass* k);
  ciArrayKlass(ciSymbol* name, int dimension, BasicType bt);

  ArrayKlass* get_ArrayKlass() {
    return (ArrayKlass*)get_Klass();
  }

  const char* type_string() { return "ciArrayKlass"; }

public:
  jint dimension() { return _dimension; }
  ciType* element_type();       // JLS calls this the "component type", (T[] for T[][])
  ciType* base_element_type();  // JLS calls this the "element type", (T for T[][])
  bool is_leaf_type();          // No subtypes of this array type.

  bool is_refined() const { return !is_type_array_klass() && properties().is_valid(); }

  // What kind of vmObject is this?
  bool is_array_klass() const { return true; }

  // The one-level type of the array elements.
  virtual ciKlass* element_klass() { return nullptr; }

  static ciArrayKlass* make(ciType* klass, bool null_free = false, bool atomic = false, bool refined_type = false);

  int array_header_in_bytes();
  ciInstance* component_mirror_instance() const;

  bool is_elem_null_free() const;
  bool is_elem_atomic() const;

  ArrayProperties properties() const;
};

#endif // SHARE_CI_CIARRAYKLASS_HPP