| #region Copyright notice and license |
| |
| // Copyright 2015 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. |
| |
| #endregion |
| |
| using System; |
| using System.Runtime.InteropServices; |
| |
| namespace Grpc.Core.Internal |
| { |
| /// <summary> |
| /// Safe handle to wrap native objects. |
| /// </summary> |
| internal abstract class SafeHandleZeroIsInvalid : System.Runtime.InteropServices.SafeHandle |
| { |
| public SafeHandleZeroIsInvalid() : base(IntPtr.Zero, true) |
| { |
| } |
| |
| public override bool IsInvalid |
| { |
| get |
| { |
| return handle == IntPtr.Zero; |
| } |
| } |
| } |
| } |