public static void HandleIOCP(IOCompletion iocp, int retval, int new_pos)
{
var current = iocp.thr;
switch (iocp.type)
{
case IOCompletion.Type.Read:
HandleReadAsync(current, iocp, retval, new_pos);
return;
case IOCompletion.Type.Write:
HandleWriteAsync(current, iocp, retval, new_pos);
return;
}
}
public static void HandleIOCP(IOCompletion iocp, int retval, int new_pos)
{
var current = iocp.thr;
switch (iocp.type)
{
case IOCompletion.Type.Read:
HandleReadAsync(current, iocp, retval, new_pos);
return;
case IOCompletion.Type.Write:
HandleWriteAsync(current, iocp, retval, new_pos);
return;
}
}
private static void HandleReadAsync(Thread current, IOCompletion iocp, int retval, int new_pos)
{
if (retval < 0)
{
iocp.Dispose();
current.ReturnFromCompletion(retval);
return;
}
var notWritten = iocp.userBuf.Write(current, new Pointer(iocp.buf.Location), retval);
if (iocp.posToUpdate != null)
{
iocp.posToUpdate.position = (uint)(new_pos - notWritten);
}
iocp.Dispose();
current.ReturnFromCompletion(retval);
}
private static void HandleWriteAsync(Thread current, IOCompletion iocp, int retval, int new_pos)
{
if (retval < 0)
{
iocp.Dispose();
current.ReturnFromCompletion(retval);
return;
}
if (iocp.posToUpdate != null)
{
var inode = iocp.posToUpdate.inode;
iocp.posToUpdate.position = (uint)new_pos;
// If position went beyond size, update size.
if (new_pos > inode.Size)
{
inode.Size = (uint)new_pos;
}
}
iocp.Dispose();
current.ReturnFromCompletion(retval);
}
internal int ArchWrite(Thread current, ref ExceptionRegisters regs, ref ByteBufferRef buf, int len, uint pos, File file)
{
if (!Globals.CompletionQueueAllocator.Contains(buf))
{
Arch.Console.WriteLine("inode-write: unimplemented");
Arch.ArchDefinition.Panic();
}
var iocp = IOCompletion.CreateWriteIOCP(current, file, buf);
var r = IPCStubs.WriteAsync(current.Parent.helperPid, current.impl._value.thread._value, new Pointer(buf.Location), fd, len, pos);
if (r < 0)
{
iocp.Dispose();
return(r);
}
Globals.CompletionQueue.Enqueue(iocp);
current.SaveState(ref regs);
current.AsyncReturn = true;
// Take the buffer
buf = ByteBufferRef.Empty;
return(0);
}
internal int ArchRead(Thread current, ref ExceptionRegisters regs, UserPtr userBuf, int len, uint pos, File file)
{
var buf = Globals.AllocateAlignedCompletionBuffer(len);
if (!buf.isValid)
{
return(-ErrorCode.ENOMEM);
}
var iocp = IOCompletion.CreateReadIOCP(current, userBuf, len, file, buf);
var r = IPCStubs.ReadAsync(current.Parent.helperPid, current.impl._value.thread._value, new Pointer(buf.Location), fd, len, pos);
if (r < 0)
{
iocp.Dispose();
return(r);
}
Globals.CompletionQueue.Enqueue(iocp);
current.SaveState(ref regs);
current.AsyncReturn = true;
return(0);
}
private static void HandleWriteAsync(Thread current, IOCompletion iocp, int retval, int new_pos)
{
if (retval < 0)
{
iocp.Dispose();
current.ReturnFromCompletion(retval);
return;
}
if (iocp.posToUpdate != null)
{
var inode = iocp.posToUpdate.inode;
iocp.posToUpdate.position = (uint)new_pos;
// If position went beyond size, update size.
if (new_pos > inode.Size)
inode.Size = (uint)new_pos;
}
iocp.Dispose();
current.ReturnFromCompletion(retval);
}
private static void HandleReadAsync(Thread current, IOCompletion iocp, int retval, int new_pos)
{
if (retval < 0)
{
iocp.Dispose();
current.ReturnFromCompletion(retval);
return;
}
var notWritten = iocp.userBuf.Write(current, new Pointer(iocp.buf.Location), retval);
if (iocp.posToUpdate != null)
{
iocp.posToUpdate.position = (uint)(new_pos - notWritten);
}
iocp.Dispose();
current.ReturnFromCompletion(retval);
}
