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#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 Google.GRPC.Core;
namespace Google.GRPC.Core.Internal
{
/// <summary>
/// grpc_event from grpc/grpc.h
/// </summary>
internal class EventSafeHandle : SafeHandleZeroIsInvalid
{
[DllImport("grpc_csharp_ext.dll")]
static extern void grpcsharp_event_finish(IntPtr ev);
[DllImport("grpc_csharp_ext.dll")]
static extern GRPCCompletionType grpcsharp_event_type(EventSafeHandle ev);
[DllImport("grpc_csharp_ext.dll")]
static extern CallSafeHandle grpcsharp_event_call(EventSafeHandle ev);
[DllImport("grpc_csharp_ext.dll")]
static extern GRPCOpError grpcsharp_event_write_accepted(EventSafeHandle ev);
[DllImport("grpc_csharp_ext.dll")]
static extern GRPCOpError grpcsharp_event_finish_accepted(EventSafeHandle ev);
[DllImport("grpc_csharp_ext.dll")]
static extern StatusCode grpcsharp_event_finished_status(EventSafeHandle ev);
[DllImport("grpc_csharp_ext.dll")]
static extern IntPtr grpcsharp_event_finished_details(EventSafeHandle ev); // returns const char*
[DllImport("grpc_csharp_ext.dll")]
static extern IntPtr grpcsharp_event_read_length(EventSafeHandle ev);
[DllImport("grpc_csharp_ext.dll")]
static extern void grpcsharp_event_read_copy_to_buffer(EventSafeHandle ev, byte[] buffer, UIntPtr bufferLen);
[DllImport("grpc_csharp_ext.dll")]
static extern IntPtr grpcsharp_event_server_rpc_new_method(EventSafeHandle ev); // returns const char*
public GRPCCompletionType GetCompletionType()
{
return grpcsharp_event_type(this);
}
public GRPCOpError GetWriteAccepted()
{
return grpcsharp_event_write_accepted(this);
}
public GRPCOpError GetFinishAccepted()
{
return grpcsharp_event_finish_accepted(this);
}
public Status GetFinished()
{
// TODO: can the native method return string directly?
string details = Marshal.PtrToStringAnsi(grpcsharp_event_finished_details(this));
return new Status(grpcsharp_event_finished_status(this), details);
}
public byte[] GetReadData()
{
IntPtr len = grpcsharp_event_read_length(this);
if (len == new IntPtr(-1))
{
return null;
}
byte[] data = new byte[(int) len];
grpcsharp_event_read_copy_to_buffer(this, data, new UIntPtr((ulong)data.Length));
return data;
}
public CallSafeHandle GetCall() {
return grpcsharp_event_call(this);
}
public string GetServerRpcNewMethod() {
// TODO: can the native method return string directly?
return Marshal.PtrToStringAnsi(grpcsharp_event_server_rpc_new_method(this));
}
//TODO: client_metadata_read event type
protected override bool ReleaseHandle()
{
grpcsharp_event_finish(handle);
return true;
}
}
// TODO: this is basically c&p of EventSafeHandle. Unify!
/// <summary>
/// Not owned version of
/// grpc_event from grpc/grpc.h
/// </summary>
internal class EventSafeHandleNotOwned : SafeHandleZeroIsInvalid
{
[DllImport("grpc_csharp_ext.dll")]
static extern void grpcsharp_event_finish(IntPtr ev);
[DllImport("grpc_csharp_ext.dll")]
static extern GRPCCompletionType grpcsharp_event_type(EventSafeHandleNotOwned ev);
[DllImport("grpc_csharp_ext.dll")]
static extern CallSafeHandle grpcsharp_event_call(EventSafeHandleNotOwned ev);
[DllImport("grpc_csharp_ext.dll")]
static extern GRPCOpError grpcsharp_event_write_accepted(EventSafeHandleNotOwned ev);
[DllImport("grpc_csharp_ext.dll")]
static extern GRPCOpError grpcsharp_event_finish_accepted(EventSafeHandleNotOwned ev);
[DllImport("grpc_csharp_ext.dll")]
static extern StatusCode grpcsharp_event_finished_status(EventSafeHandleNotOwned ev);
[DllImport("grpc_csharp_ext.dll")]
static extern IntPtr grpcsharp_event_finished_details(EventSafeHandleNotOwned ev); // returns const char*
[DllImport("grpc_csharp_ext.dll")]
static extern IntPtr grpcsharp_event_read_length(EventSafeHandleNotOwned ev);
[DllImport("grpc_csharp_ext.dll")]
static extern void grpcsharp_event_read_copy_to_buffer(EventSafeHandleNotOwned ev, byte[] buffer, UIntPtr bufferLen);
[DllImport("grpc_csharp_ext.dll")]
static extern IntPtr grpcsharp_event_server_rpc_new_method(EventSafeHandleNotOwned ev); // returns const char*
public EventSafeHandleNotOwned() : base(false)
{
}
public EventSafeHandleNotOwned(IntPtr handle) : base(false)
{
SetHandle(handle);
}
public GRPCCompletionType GetCompletionType()
{
return grpcsharp_event_type(this);
}
public GRPCOpError GetWriteAccepted()
{
return grpcsharp_event_write_accepted(this);
}
public GRPCOpError GetFinishAccepted()
{
return grpcsharp_event_finish_accepted(this);
}
public Status GetFinished()
{
// TODO: can the native method return string directly?
string details = Marshal.PtrToStringAnsi(grpcsharp_event_finished_details(this));
return new Status(grpcsharp_event_finished_status(this), details);
}
public byte[] GetReadData()
{
IntPtr len = grpcsharp_event_read_length(this);
if (len == new IntPtr(-1))
{
return null;
}
byte[] data = new byte[(int) len];
grpcsharp_event_read_copy_to_buffer(this, data, new UIntPtr((ulong)data.Length));
return data;
}
public CallSafeHandle GetCall() {
return grpcsharp_event_call(this);
}
public string GetServerRpcNewMethod() {
// TODO: can the native method return string directly?
return Marshal.PtrToStringAnsi(grpcsharp_event_server_rpc_new_method(this));
}
//TODO: client_metadata_read event type
protected override bool ReleaseHandle()
{
grpcsharp_event_finish(handle);
return true;
}
}
}
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