chromium/third_party/grpc/src/src/core/lib/gprpp/orphanable.h

//
//
// Copyright 2017 gRPC authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
//

#ifndef GRPC_SRC_CORE_LIB_GPRPP_ORPHANABLE_H
#define GRPC_SRC_CORE_LIB_GPRPP_ORPHANABLE_H

#include <grpc/support/port_platform.h>

#include <cinttypes>
#include <memory>
#include <utility>

#include "src/core/lib/gprpp/debug_location.h"
#include "src/core/lib/gprpp/ref_counted.h"
#include "src/core/lib/gprpp/ref_counted_ptr.h"

namespace grpc_core {

// A base class for orphanable objects, which have one external owner
// but are not necessarily destroyed immediately when the external owner
// gives up ownership.  Instead, the owner calls the object's Orphan()
// method, and the object then takes responsibility for its own cleanup
// and destruction.
class Orphanable { … };

class OrphanableDelete { … };

OrphanablePtr;

template <typename T, typename... Args>
inline OrphanablePtr<T> MakeOrphanable(Args&&... args) { … }

// A type of Orphanable with internal ref-counting.
template <typename Child, UnrefBehavior UnrefBehaviorArg = kUnrefDelete>
class InternallyRefCounted : public Orphanable { … };

}  // namespace grpc_core

#endif  // GRPC_SRC_CORE_LIB_GPRPP_ORPHANABLE_H