| #region Copyright notice and license |
| // Copyright 2015, Google Inc. |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // 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 |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| #endregion |
| using System; |
| using System.Runtime.InteropServices; |
| using System.Threading; |
| using System.Threading.Tasks; |
| |
| namespace Grpc.Core.Internal |
| { |
| /// <summary> |
| /// grpc_channel from <grpc/grpc.h> |
| /// </summary> |
| internal class ChannelSafeHandle : SafeHandleZeroIsInvalid |
| { |
| [DllImport("grpc_csharp_ext.dll")] |
| static extern ChannelSafeHandle grpcsharp_insecure_channel_create(string target, ChannelArgsSafeHandle channelArgs); |
| |
| [DllImport("grpc_csharp_ext.dll")] |
| static extern ChannelSafeHandle grpcsharp_secure_channel_create(CredentialsSafeHandle credentials, string target, ChannelArgsSafeHandle channelArgs); |
| |
| [DllImport("grpc_csharp_ext.dll")] |
| static extern CallSafeHandle grpcsharp_channel_create_call(ChannelSafeHandle channel, CompletionQueueSafeHandle cq, string method, string host, Timespec deadline); |
| |
| [DllImport("grpc_csharp_ext.dll")] |
| static extern ChannelState grpcsharp_channel_check_connectivity_state(ChannelSafeHandle channel, int tryToConnect); |
| |
| [DllImport("grpc_csharp_ext.dll")] |
| static extern void grpcsharp_channel_watch_connectivity_state(ChannelSafeHandle channel, ChannelState lastObservedState, |
| Timespec deadline, CompletionQueueSafeHandle cq, BatchContextSafeHandle ctx); |
| |
| [DllImport("grpc_csharp_ext.dll")] |
| static extern void grpcsharp_channel_destroy(IntPtr channel); |
| |
| private ChannelSafeHandle() |
| { |
| } |
| |
| public static ChannelSafeHandle CreateInsecure(string target, ChannelArgsSafeHandle channelArgs) |
| { |
| return grpcsharp_insecure_channel_create(target, channelArgs); |
| } |
| |
| public static ChannelSafeHandle CreateSecure(CredentialsSafeHandle credentials, string target, ChannelArgsSafeHandle channelArgs) |
| { |
| return grpcsharp_secure_channel_create(credentials, target, channelArgs); |
| } |
| |
| public CallSafeHandle CreateCall(CompletionRegistry registry, CompletionQueueSafeHandle cq, string method, string host, Timespec deadline) |
| { |
| var result = grpcsharp_channel_create_call(this, cq, method, host, deadline); |
| result.SetCompletionRegistry(registry); |
| return result; |
| } |
| |
| public ChannelState CheckConnectivityState(bool tryToConnect) |
| { |
| return grpcsharp_channel_check_connectivity_state(this, tryToConnect ? 1 : 0); |
| } |
| |
| public void WatchConnectivityState(ChannelState lastObservedState, Timespec deadline, CompletionQueueSafeHandle cq, |
| CompletionRegistry completionRegistry, BatchCompletionDelegate callback) |
| { |
| var ctx = BatchContextSafeHandle.Create(); |
| completionRegistry.RegisterBatchCompletion(ctx, callback); |
| grpcsharp_channel_watch_connectivity_state(this, lastObservedState, deadline, cq, ctx); |
| } |
| |
| protected override bool ReleaseHandle() |
| { |
| grpcsharp_channel_destroy(handle); |
| return true; |
| } |
| } |
| } |