handle_disposition.h

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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
#ifndef FLUTTER_SHELL_PLATFORM_FUCHSIA_DART_PKG_ZIRCON_SDK_EXT_HANDLE_DISPOSITION_H_
#define FLUTTER_SHELL_PLATFORM_FUCHSIA_DART_PKG_ZIRCON_SDK_EXT_HANDLE_DISPOSITION_H_
 
#include <zircon/syscalls.h>
 
#include <vector>
 
#include "flutter/fml/memory/ref_counted.h"
#include "handle.h"
#include "third_party/dart/runtime/include/dart_api.h"
#include "third_party/tonic/dart_library_natives.h"
#include "third_party/tonic/dart_wrappable.h"
 
namespace zircon {
namespace dart {
/**
 * HandleDisposition is the native peer of a Dart object (HandleDisposition
 * in dart:zircon) that holds a Handle and additional properties.
 */
class HandleDisposition : public fml::RefCountedThreadSafe<HandleDisposition>,
                          public tonic::DartWrappable {
  DEFINE_WRAPPERTYPEINFO();
  FML_FRIEND_REF_COUNTED_THREAD_SAFE(HandleDisposition);
  FML_FRIEND_MAKE_REF_COUNTED(HandleDisposition);
 
 public:
  static void RegisterNatives(tonic::DartLibraryNatives* natives);
 
  static fml::RefPtr<HandleDisposition> create(zx_handle_op_t operation,
                                               fml::RefPtr<dart::Handle> handle,
                                               zx_obj_type_t type,
                                               zx_rights_t rights);
 
  zx_handle_op_t operation() const { return operation_; }
  fml::RefPtr<dart::Handle> handle() const { return handle_; }
  zx_obj_type_t type() const { return type_; }
  zx_rights_t rights() const { return rights_; }
  zx_status_t result() const { return result_; }
  void set_result(zx_status_t result) { result_ = result; }
 
 private:
  explicit HandleDisposition(zx_handle_op_t operation,
                             fml::RefPtr<dart::Handle> handle,
                             zx_obj_type_t type,
                             zx_rights_t rights,
                             zx_status_t result)
      : operation_(operation),
        handle_(handle),
        type_(type),
        rights_(rights),
        result_(result) {}
 
  void RetainDartWrappableReference() const override { AddRef(); }
 
  void ReleaseDartWrappableReference() const override { Release(); }
 
  const zx_handle_op_t operation_;
  const fml::RefPtr<dart::Handle> handle_;
  const zx_obj_type_t type_;
  const zx_rights_t rights_;
  zx_status_t result_;
};
 
}  // namespace dart
}  // namespace zircon
 
#endif  // FLUTTER_SHELL_PLATFORM_FUCHSIA_DART_PKG_ZIRCON_SDK_EXT_HANDLE_DISPOSITION_H_