| #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; |
| using Grpc.Core.Profiling; |
| |
| namespace Grpc.Core.Internal |
| { |
| /// <summary> |
| /// grpc_channel from <c>grpc/grpc.h</c> |
| /// </summary> |
| internal class ChannelSafeHandle : SafeHandleZeroIsInvalid |
| { |
| static readonly NativeMethods Native = NativeMethods.Get(); |
| |
| private ChannelSafeHandle() |
| { |
| } |
| |
| public static ChannelSafeHandle CreateInsecure(string target, ChannelArgsSafeHandle channelArgs) |
| { |
| // Increment reference count for the native gRPC environment to make sure we don't do grpc_shutdown() before destroying the server handle. |
| // Doing so would make object finalizer crash if we end up abandoning the handle. |
| GrpcEnvironment.GrpcNativeInit(); |
| return Native.grpcsharp_insecure_channel_create(target, channelArgs); |
| } |
| |
| public static ChannelSafeHandle CreateSecure(ChannelCredentialsSafeHandle credentials, string target, ChannelArgsSafeHandle channelArgs) |
| { |
| // Increment reference count for the native gRPC environment to make sure we don't do grpc_shutdown() before destroying the server handle. |
| // Doing so would make object finalizer crash if we end up abandoning the handle. |
| GrpcEnvironment.GrpcNativeInit(); |
| return Native.grpcsharp_secure_channel_create(credentials, target, channelArgs); |
| } |
| |
| public CallSafeHandle CreateCall(CompletionRegistry registry, CallSafeHandle parentCall, ContextPropagationFlags propagationMask, CompletionQueueSafeHandle cq, string method, string host, Timespec deadline, CallCredentialsSafeHandle credentials) |
| { |
| using (Profilers.ForCurrentThread().NewScope("ChannelSafeHandle.CreateCall")) |
| { |
| var result = Native.grpcsharp_channel_create_call(this, parentCall, propagationMask, cq, method, host, deadline); |
| if (credentials != null) |
| { |
| result.SetCredentials(credentials); |
| } |
| result.Initialize(registry, cq); |
| return result; |
| } |
| } |
| |
| public ChannelState CheckConnectivityState(bool tryToConnect) |
| { |
| return Native.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); |
| Native.grpcsharp_channel_watch_connectivity_state(this, lastObservedState, deadline, cq, ctx); |
| } |
| |
| public string GetTarget() |
| { |
| using (var cstring = Native.grpcsharp_channel_get_target(this)) |
| { |
| return cstring.GetValue(); |
| } |
| } |
| |
| protected override bool ReleaseHandle() |
| { |
| Native.grpcsharp_channel_destroy(handle); |
| GrpcEnvironment.GrpcNativeShutdown(); |
| return true; |
| } |
| } |
| } |