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Merge pull request #237 from dworkin/feature/async-dotnet

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Async I/O for dotnet
This commit is contained in:
Bill Zissimopoulos
2019-06-21 14:48:30 -07:00
committed by GitHub
parent 79b2f38d87 bfd8dca62d
commit f0d7e5b322
4 changed files with 366 additions and 3 deletions
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83
src/dotnet/FileSystemHost.cs
View File

@ -386,6 +386,89 @@ namespace Fsp
{
return Api.GetVersion();
}
/// <summary>
/// Returns a RequestHint to reference the current operation asynchronously.
/// </summary>
public UInt64 GetOperationRequestHint()
{
return Api.FspFileSystemGetOperationRequestHint();
}
/// <summary>
/// Asynchronously complete a Write operation.
/// </summary>
/// <param name="RequestHint">
/// A reference to the operation to complete.
/// </param>
/// <param name="Status">
/// STATUS_SUCCESS or error code.
/// </param>
/// <param name="BytesTransferred">
/// The number of bytes written.
/// </param>
/// <param name="FileInfo">
/// Updated file information.
/// </param>
public void SendWriteResponse(UInt64 RequestHint, Int32 Status, UInt32 BytesTransferred, ref FileInfo FileInfo)
{
var Response = new FspFsctlTransactRsp()
{
Size = 128,
Kind = (UInt32) FspFsctlTransact.WriteKind,
Hint = RequestHint
};
Response.IoStatus.Information = BytesTransferred;
Response.IoStatus.Status = (UInt32) Status;
Response.WriteFileInfo = FileInfo;
Api.FspFileSystemSendResponse(_FileSystemPtr, ref Response);
}
/// <summary>
/// Asynchronously complete a Read operation.
/// </summary>
/// <param name="RequestHint">
/// A reference to the operation to complete.
/// </param>
/// <param name="Status">
/// STATUS_SUCCESS or error code.
/// </param>
/// <param name="BytesTransferred">
/// Number of bytes read.
/// </param>
public void SendReadResponse(UInt64 RequestHint, Int32 Status, UInt32 BytesTransferred)
{
var Response = new FspFsctlTransactRsp()
{
Size = 128,
Kind = (UInt32) FspFsctlTransact.ReadKind,
Hint = RequestHint
};
Response.IoStatus.Information = BytesTransferred;
Response.IoStatus.Status = (UInt32) Status;
Api.FspFileSystemSendResponse(_FileSystemPtr, ref Response);
}
/// <summary>
/// Asynchronously complete a ReadDirectory operation.
/// </summary>
/// <param name="RequestHint">
/// A reference to the operation to complete.
/// </param>
/// <param name="Status">
/// STATUS_SUCCESS or error code.
/// </param>
/// <param name="BytesTransferred">
/// Number of bytes read.
/// </param>
public void SendReadDirectoryResponse(UInt64 RequestHint, Int32 Status, UInt32 BytesTransferred)
{
var Response = new FspFsctlTransactRsp()
{
Size = 128,
Kind = (UInt32) FspFsctlTransact.QueryDirectoryKind,
Hint = RequestHint
};
Response.IoStatus.Information = BytesTransferred;
Response.IoStatus.Status = (UInt32) Status;
Api.FspFileSystemSendResponse(_FileSystemPtr, ref Response);
}
/* FSP_FILE_SYSTEM_INTERFACE */
private static Byte[] ByteBufferNotNull = new Byte[0];

73
src/dotnet/Interop.cs
View File

@ -355,6 +355,65 @@ namespace Fsp.Interop
public IntPtr Information;
}
[StructLayout(LayoutKind.Sequential)]
internal struct IoStatus
{
internal UInt32 Information;
internal UInt32 Status;
}
internal enum FspFsctlTransact
{
ReadKind = 5,
WriteKind = 6,
QueryDirectoryKind = 14
}
[StructLayout(LayoutKind.Explicit)]
internal struct FspFsctlTransactReq
{
[FieldOffset(0)]
internal UInt16 Version;
[FieldOffset(2)]
internal UInt16 Size;
[FieldOffset(4)]
internal UInt32 Kind;
[FieldOffset(8)]
internal UInt64 Hint;
[FieldOffset(0)]
internal unsafe fixed Byte Padding[88];
}
[StructLayout(LayoutKind.Explicit)]
internal struct FspFsctlTransactRsp
{
[FieldOffset(0)]
internal UInt16 Version;
[FieldOffset(2)]
internal UInt16 Size;
[FieldOffset(4)]
internal UInt32 Kind;
[FieldOffset(8)]
internal UInt64 Hint;
[FieldOffset(16)]
internal IoStatus IoStatus;
[FieldOffset(24)]
internal FileInfo WriteFileInfo;
[FieldOffset(0)]
internal unsafe fixed Byte Padding[128];
}
[StructLayout(LayoutKind.Sequential)]
internal unsafe struct FspFileSystemOperationContext
{
internal FspFsctlTransactReq *Request;
internal FspFsctlTransactRsp *Response;
}
[StructLayout(LayoutKind.Sequential)]
internal struct FileSystemInterface
{
@ -664,6 +723,12 @@ namespace Fsp.Interop
internal delegate Int32 FspFileSystemStopDispatcher(
IntPtr FileSystem);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
internal delegate void FspFileSystemSendResponse(
IntPtr FileSystem,
ref FspFsctlTransactRsp Response);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
internal unsafe delegate FspFileSystemOperationContext *FspFileSystemGetOperationContext();
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
internal delegate IntPtr FspFileSystemMountPointF(
IntPtr FileSystem);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
@ -848,6 +913,8 @@ namespace Fsp.Interop
internal static Proto.FspFileSystemRemoveMountPoint FspFileSystemRemoveMountPoint;
internal static Proto.FspFileSystemStartDispatcher FspFileSystemStartDispatcher;
internal static Proto.FspFileSystemStopDispatcher FspFileSystemStopDispatcher;
internal static Proto.FspFileSystemSendResponse FspFileSystemSendResponse;
internal static Proto.FspFileSystemGetOperationContext FspFileSystemGetOperationContext;
internal static Proto.FspFileSystemMountPointF FspFileSystemMountPoint;
internal static Proto.FspFileSystemSetOperationGuardStrategyF FspFileSystemSetOperationGuardStrategy;
internal static Proto.FspFileSystemSetDebugLogF FspFileSystemSetDebugLog;
@ -894,6 +961,10 @@ namespace Fsp.Interop
else
return _FspFileSystemSetMountPointEx(FileSystem, MountPoint, IntPtr.Zero);
}
internal static unsafe UInt64 FspFileSystemGetOperationRequestHint()
{
return FspFileSystemGetOperationContext()->Request->Hint;
}
internal static unsafe Boolean FspFileSystemAddDirInfo(
ref DirInfo DirInfo,
IntPtr Buffer,
@ -1242,6 +1313,8 @@ namespace Fsp.Interop
FspFileSystemRemoveMountPoint = GetEntryPoint<Proto.FspFileSystemRemoveMountPoint>(Module);
FspFileSystemStartDispatcher = GetEntryPoint<Proto.FspFileSystemStartDispatcher>(Module);
FspFileSystemStopDispatcher = GetEntryPoint<Proto.FspFileSystemStopDispatcher>(Module);
FspFileSystemSendResponse = GetEntryPoint<Proto.FspFileSystemSendResponse>(Module);
FspFileSystemGetOperationContext = GetEntryPoint<Proto.FspFileSystemGetOperationContext>(Module);
FspFileSystemMountPoint = GetEntryPoint<Proto.FspFileSystemMountPointF>(Module);
FspFileSystemSetOperationGuardStrategy = GetEntryPoint<Proto.FspFileSystemSetOperationGuardStrategyF>(Module);
FspFileSystemSetDebugLog = GetEntryPoint<Proto.FspFileSystemSetDebugLogF>(Module);