src/csharp/Grpc.Core/Internal/ChannelArgsSafeHandle.cs

#region Copyright notice and license
// Copyright 2015-2016, Google Inc.
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//
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// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#endregion
using System;
using System.Runtime.InteropServices;
using System.Threading.Tasks;

namespace Grpc.Core.Internal
{
    /// <summary>
    /// grpc_channel_args from <c>grpc/grpc.h</c>
    /// </summary>
    internal class ChannelArgsSafeHandle : SafeHandleZeroIsInvalid
    {
        static readonly NativeMethods Native = NativeMethods.Get();

        private ChannelArgsSafeHandle()
        {
        }

        public static ChannelArgsSafeHandle CreateNull()
        {
            return new ChannelArgsSafeHandle();
        }

        public static ChannelArgsSafeHandle Create(int size)
        {
            return Native.grpcsharp_channel_args_create(new UIntPtr((uint)size));
        }

        public void SetString(int index, string key, string value)
        {
            Native.grpcsharp_channel_args_set_string(this, new UIntPtr((uint)index), key, value);
        }

        public void SetInteger(int index, string key, int value)
        {
            Native.grpcsharp_channel_args_set_integer(this, new UIntPtr((uint)index), key, value);
        }

        protected override bool ReleaseHandle()
        {
            Native.grpcsharp_channel_args_destroy(handle);
            return true;
        }
    }
}