| #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.Diagnostics; |
| using System.Runtime.InteropServices; |
| using Grpc.Core; |
| |
| namespace Grpc.Core.Internal |
| { |
| internal delegate void CompletionCallbackDelegate(GRPCOpError error, IntPtr batchContextPtr); |
| |
| /// <summary> |
| /// grpc_call from <grpc/grpc.h> |
| /// </summary> |
| internal class CallSafeHandle : SafeHandleZeroIsInvalid |
| { |
| const uint GRPC_WRITE_BUFFER_HINT = 1; |
| |
| [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 GRPCCallError grpcsharp_call_cancel(CallSafeHandle call); |
| |
| [DllImport("grpc_csharp_ext.dll")] |
| static extern GRPCCallError grpcsharp_call_cancel_with_status(CallSafeHandle call, StatusCode status, string description); |
| |
| [DllImport("grpc_csharp_ext.dll")] |
| static extern GRPCCallError grpcsharp_call_start_unary(CallSafeHandle call, |
| [MarshalAs(UnmanagedType.FunctionPtr)] CompletionCallbackDelegate callback, |
| byte[] send_buffer, UIntPtr send_buffer_len); |
| |
| [DllImport("grpc_csharp_ext.dll")] |
| static extern void grpcsharp_call_blocking_unary(CallSafeHandle call, CompletionQueueSafeHandle dedicatedCq, |
| [MarshalAs(UnmanagedType.FunctionPtr)] CompletionCallbackDelegate callback, |
| byte[] send_buffer, UIntPtr send_buffer_len); |
| |
| [DllImport("grpc_csharp_ext.dll")] |
| static extern GRPCCallError grpcsharp_call_start_client_streaming(CallSafeHandle call, |
| [MarshalAs(UnmanagedType.FunctionPtr)] CompletionCallbackDelegate callback); |
| |
| [DllImport("grpc_csharp_ext.dll")] |
| static extern GRPCCallError grpcsharp_call_start_server_streaming(CallSafeHandle call, |
| [MarshalAs(UnmanagedType.FunctionPtr)] CompletionCallbackDelegate callback, |
| byte[] send_buffer, UIntPtr send_buffer_len); |
| |
| [DllImport("grpc_csharp_ext.dll")] |
| static extern GRPCCallError grpcsharp_call_start_duplex_streaming(CallSafeHandle call, |
| [MarshalAs(UnmanagedType.FunctionPtr)] CompletionCallbackDelegate callback); |
| |
| [DllImport("grpc_csharp_ext.dll")] |
| static extern GRPCCallError grpcsharp_call_send_message(CallSafeHandle call, |
| [MarshalAs(UnmanagedType.FunctionPtr)] CompletionCallbackDelegate callback, |
| byte[] send_buffer, UIntPtr send_buffer_len); |
| |
| [DllImport("grpc_csharp_ext.dll")] |
| static extern GRPCCallError grpcsharp_call_send_close_from_client(CallSafeHandle call, |
| [MarshalAs(UnmanagedType.FunctionPtr)] CompletionCallbackDelegate callback); |
| |
| [DllImport("grpc_csharp_ext.dll")] |
| static extern GRPCCallError grpcsharp_call_send_status_from_server(CallSafeHandle call, [MarshalAs(UnmanagedType.FunctionPtr)] CompletionCallbackDelegate callback, StatusCode statusCode, string statusMessage); |
| |
| [DllImport("grpc_csharp_ext.dll")] |
| static extern GRPCCallError grpcsharp_call_recv_message(CallSafeHandle call, |
| [MarshalAs(UnmanagedType.FunctionPtr)] CompletionCallbackDelegate callback); |
| |
| [DllImport("grpc_csharp_ext.dll")] |
| static extern GRPCCallError grpcsharp_call_start_serverside(CallSafeHandle call, |
| [MarshalAs(UnmanagedType.FunctionPtr)] CompletionCallbackDelegate callback); |
| |
| [DllImport("grpc_csharp_ext.dll")] |
| static extern void grpcsharp_call_destroy(IntPtr call); |
| |
| private CallSafeHandle() |
| { |
| } |
| |
| public static CallSafeHandle Create(ChannelSafeHandle channel, CompletionQueueSafeHandle cq, string method, string host, Timespec deadline) |
| { |
| return grpcsharp_channel_create_call(channel, cq, method, host, deadline); |
| } |
| |
| public void StartUnary(byte[] payload, CompletionCallbackDelegate callback) |
| { |
| AssertCallOk(grpcsharp_call_start_unary(this, callback, payload, new UIntPtr((ulong)payload.Length))); |
| } |
| |
| public void BlockingUnary(CompletionQueueSafeHandle dedicatedCq, byte[] payload, CompletionCallbackDelegate callback) |
| { |
| grpcsharp_call_blocking_unary(this, dedicatedCq, callback, payload, new UIntPtr((ulong)payload.Length)); |
| } |
| |
| public void StartClientStreaming(CompletionCallbackDelegate callback) |
| { |
| AssertCallOk(grpcsharp_call_start_client_streaming(this, callback)); |
| } |
| |
| public void StartServerStreaming(byte[] payload, CompletionCallbackDelegate callback) |
| { |
| AssertCallOk(grpcsharp_call_start_server_streaming(this, callback, payload, new UIntPtr((ulong)payload.Length))); |
| } |
| |
| public void StartDuplexStreaming(CompletionCallbackDelegate callback) |
| { |
| AssertCallOk(grpcsharp_call_start_duplex_streaming(this, callback)); |
| } |
| |
| public void StartSendMessage(byte[] payload, CompletionCallbackDelegate callback) |
| { |
| AssertCallOk(grpcsharp_call_send_message(this, callback, payload, new UIntPtr((ulong)payload.Length))); |
| } |
| |
| public void StartSendCloseFromClient(CompletionCallbackDelegate callback) |
| { |
| AssertCallOk(grpcsharp_call_send_close_from_client(this, callback)); |
| } |
| |
| public void StartSendStatusFromServer(Status status, CompletionCallbackDelegate callback) |
| { |
| AssertCallOk(grpcsharp_call_send_status_from_server(this, callback, status.StatusCode, status.Detail)); |
| } |
| |
| public void StartReceiveMessage(CompletionCallbackDelegate callback) |
| { |
| AssertCallOk(grpcsharp_call_recv_message(this, callback)); |
| } |
| |
| public void StartServerSide(CompletionCallbackDelegate callback) |
| { |
| AssertCallOk(grpcsharp_call_start_serverside(this, callback)); |
| } |
| |
| public void Cancel() |
| { |
| AssertCallOk(grpcsharp_call_cancel(this)); |
| } |
| |
| public void CancelWithStatus(Status status) |
| { |
| AssertCallOk(grpcsharp_call_cancel_with_status(this, status.StatusCode, status.Detail)); |
| } |
| |
| protected override bool ReleaseHandle() |
| { |
| grpcsharp_call_destroy(handle); |
| return true; |
| } |
| |
| private static void AssertCallOk(GRPCCallError callError) |
| { |
| Trace.Assert(callError == GRPCCallError.GRPC_CALL_OK, "Status not GRPC_CALL_OK"); |
| } |
| |
| private static uint GetFlags(bool buffered) |
| { |
| return buffered ? 0 : GRPC_WRITE_BUFFER_HINT; |
| } |
| } |
| } |