diff options
Diffstat (limited to 'src/csharp/Grpc.Core/Internal/CallSafeHandle.cs')
| -rw-r--r-- | src/csharp/Grpc.Core/Internal/CallSafeHandle.cs | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/src/csharp/Grpc.Core/Internal/CallSafeHandle.cs b/src/csharp/Grpc.Core/Internal/CallSafeHandle.cs new file mode 100644 index 0000000000..659a383b4b --- /dev/null +++ b/src/csharp/Grpc.Core/Internal/CallSafeHandle.cs @@ -0,0 +1,181 @@ +#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 +{ + //TODO: rename the delegate + internal delegate void CompletionCallbackDelegate(GRPCOpError error, IntPtr batchContextPtr); + + /// <summary> + /// grpc_call from <grpc/grpc.h> + /// </summary> + internal class CallSafeHandle : SafeHandleZeroIsInvalid + { + const UInt32 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 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 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 UInt32 GetFlags(bool buffered) { + return buffered ? 0 : GRPC_WRITE_BUFFER_HINT; + } + } +}
\ No newline at end of file |