ciMethodHandle.hpp

/*
 * Copyright (c) 2009, 2011, 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.
 *
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#ifndef SHARE_VM_CI_CIMETHODHANDLE_HPP
#define SHARE_VM_CI_CIMETHODHANDLE_HPP

#include "ci/ciCallProfile.hpp"
#include "ci/ciInstance.hpp"
#include "prims/methodHandles.hpp"

// ciMethodHandle
//
// The class represents a java.lang.invoke.MethodHandle object.
class ciMethodHandle : public ciInstance {
private:
  ciMethod*      _callee;
  ciMethod*      _caller;
  ciCallProfile  _profile;
  ciMethod*      _method_handle_adapter;
  ciMethod*      _invokedynamic_adapter;

  // Return an adapter for this MethodHandle.
  ciMethod* get_adapter_impl(bool is_invokedynamic);
  ciMethod* get_adapter(     bool is_invokedynamic);

protected:
  void print_chain_impl(outputStream* st) PRODUCT_RETURN;

public:
  ciMethodHandle(instanceHandle h_i) :
    ciInstance(h_i),
    _callee(NULL),
    _caller(NULL),
    _method_handle_adapter(NULL),
    _invokedynamic_adapter(NULL)
  {}

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

  void set_callee(ciMethod* m)                  { _callee  = m;       }
  void set_caller(ciMethod* m)                  { _caller  = m;       }
  void set_call_profile(ciCallProfile profile)  { _profile = profile; }

  // Return an adapter for a MethodHandle call.
  ciMethod* get_method_handle_adapter() {
    if (_method_handle_adapter == NULL) {
      _method_handle_adapter = get_adapter(false);
    }
    return _method_handle_adapter;
  }

  // Return an adapter for an invokedynamic call.
  ciMethod* get_invokedynamic_adapter() {
    if (_invokedynamic_adapter == NULL) {
      _invokedynamic_adapter = get_adapter(true);
    }
    return _invokedynamic_adapter;
  }

  void print_chain(outputStream* st = tty) PRODUCT_RETURN;
};

#endif // SHARE_VM_CI_CIMETHODHANDLE_HPP