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Diffstat (limited to 'src/csharp/Grpc.Core/Internal/BatchContextSafeHandle.cs')
| -rw-r--r-- | src/csharp/Grpc.Core/Internal/BatchContextSafeHandle.cs | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/src/csharp/Grpc.Core/Internal/BatchContextSafeHandle.cs b/src/csharp/Grpc.Core/Internal/BatchContextSafeHandle.cs new file mode 100644 index 0000000000..861cbbe4c6 --- /dev/null +++ b/src/csharp/Grpc.Core/Internal/BatchContextSafeHandle.cs @@ -0,0 +1,130 @@ +#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 Grpc.Core; + +namespace Grpc.Core.Internal +{ + /// <summary> + /// Not owned version of + /// grpcsharp_batch_context + /// </summary> + internal class BatchContextSafeHandle : SafeHandleZeroIsInvalid + { + [DllImport("grpc_csharp_ext.dll")] + static extern BatchContextSafeHandle grpcsharp_batch_context_create(); + + [DllImport("grpc_csharp_ext.dll")] + static extern IntPtr grpcsharp_batch_context_recv_message_length(BatchContextSafeHandle ctx); + + [DllImport("grpc_csharp_ext.dll")] + static extern void grpcsharp_batch_context_recv_message_to_buffer(BatchContextSafeHandle ctx, byte[] buffer, UIntPtr bufferLen); + + [DllImport("grpc_csharp_ext.dll")] + static extern StatusCode grpcsharp_batch_context_recv_status_on_client_status(BatchContextSafeHandle ctx); + + [DllImport("grpc_csharp_ext.dll")] + static extern IntPtr grpcsharp_batch_context_recv_status_on_client_details(BatchContextSafeHandle ctx); // returns const char* + + [DllImport("grpc_csharp_ext.dll")] + static extern CallSafeHandle grpcsharp_batch_context_server_rpc_new_call(BatchContextSafeHandle ctx); + + [DllImport("grpc_csharp_ext.dll")] + static extern IntPtr grpcsharp_batch_context_server_rpc_new_method(BatchContextSafeHandle ctx); // returns const char* + + [DllImport("grpc_csharp_ext.dll")] + static extern int grpcsharp_batch_context_recv_close_on_server_cancelled(BatchContextSafeHandle ctx); + + [DllImport("grpc_csharp_ext.dll")] + static extern void grpcsharp_batch_context_destroy(IntPtr ctx); + + private BatchContextSafeHandle() + { + } + + public static BatchContextSafeHandle Create() + { + return grpcsharp_batch_context_create(); + } + + public IntPtr Handle + { + get + { + return handle; + } + } + + public Status GetReceivedStatus() + { + // TODO: can the native method return string directly? + string details = Marshal.PtrToStringAnsi(grpcsharp_batch_context_recv_status_on_client_details(this)); + return new Status(grpcsharp_batch_context_recv_status_on_client_status(this), details); + } + + public byte[] GetReceivedMessage() + { + IntPtr len = grpcsharp_batch_context_recv_message_length(this); + if (len == new IntPtr(-1)) + { + return null; + } + byte[] data = new byte[(int)len]; + grpcsharp_batch_context_recv_message_to_buffer(this, data, new UIntPtr((ulong)data.Length)); + return data; + } + + public CallSafeHandle GetServerRpcNewCall() + { + return grpcsharp_batch_context_server_rpc_new_call(this); + } + + public string GetServerRpcNewMethod() + { + return Marshal.PtrToStringAnsi(grpcsharp_batch_context_server_rpc_new_method(this)); + } + + public bool GetReceivedCloseOnServerCancelled() + { + return grpcsharp_batch_context_recv_close_on_server_cancelled(this) != 0; + } + + protected override bool ReleaseHandle() + { + grpcsharp_batch_context_destroy(handle); + return true; + } + } +}
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