private void readHandleFile(FileHandle hndl, ReadHandleRequest request)
{
this.kernelStorage.channelDevice.storage = 1;
byte[] readBytes = new byte[request.amount];
Resource response;
uint amountRead = 0;
try
{
for (uint i = 0; i < request.amount; i++)
{
amountRead++;
readBytes[i] = hndl.read();
}
response = new ReadHandleResponse(this.id, readBytes, 0, checked ((uint)request.amount), request.createdByProcess);
//program.memAccesser.writeFromAddr(program.registers.DS + program.registers.A, readBytes);
}
catch (Exception e)
{
if (!e.Message.Contains("Reading file out of bounds"))
{
throw e;
}
response = new ReadHandleResponse(this.id, readBytes, 1, checked ((uint)request.amount), request.createdByProcess);
//program.memAccesser.writeFromAddr(program.registers.DS + program.registers.A, readBytes);
}
this.kernelStorage.channelDevice.storage = 0;
kernelStorage.resources.add(response);
request.release();
}
private void readHandleConsole(ConsoleDevice hndl, ReadHandleRequest request)
{
this.kernelStorage.channelDevice.console = 1;
byte[] readBytes = hndl.readLine();
Resource response;
if (readBytes.Length > request.amount)
{
//program.memAccesser.writeFromAddr(program.registers.DS + program.registers.A, readBytes, program.registers.CX);
//program.registers.A = 1;
response = new ReadHandleResponse(this.id, readBytes, 1, checked ((uint)request.amount), request.createdByProcess);
}
else
{
uint len = checked ((uint)readBytes.Length);
response = new ReadHandleResponse(this.id, readBytes, 0, checked ((uint)request.amount), request.createdByProcess);
//program.memAccesser.writeFromAddr(program.registers.DS + program.registers.A, readBytes, len);
//program.registers.CX = len;
//program.registers.A = 0;
}
this.kernelStorage.channelDevice.console = 0;
//program.registers.A = 0;
//program.registers.SI = SiInt.None;
kernelStorage.resources.add(response);
request.release();
}
private void readHandleBattery(Battery battery, ReadHandleRequest request)
{
Resource response = new ReadHandleResponse(this.id, battery.getStatus(), 0, checked ((uint)request.amount), request.createdByProcess);
kernelStorage.resources.add(response);
request.release();
}
public void handleResponse(Resource resource)
{
switch (resource.type)
{
case ResType.CreateHandleResponse:
{
Program program = process.virtualMachine.program;
CreateHandleResponse createHandleResponse = (CreateHandleResponse)resource;
program.registers.B = (uint)(createHandleResponse.handle);
program.registers.SI = SiInt.None;
break;
}
case ResType.ReadHandleResponse:
{
Program program = process.virtualMachine.program;
ReadHandleResponse response = (ReadHandleResponse)resource;
if (response.readBytes.Length > response.bytesRequested)
{
program.memAccesser.writeFromAddr(program.registers.DS + program.registers.A, response.readBytes, response.bytesRequested);
program.registers.CX = response.bytesRequested;
program.registers.SI = SiInt.None;
}
else
{
uint len = checked ((uint)response.readBytes.Length);
program.memAccesser.writeFromAddr(program.registers.DS + program.registers.A, response.readBytes, len);
program.registers.CX = len;
}
program.registers.A = response.status;
program.registers.SI = SiInt.None;
break;
}
case ResType.WriteHandleResponse:
{
Program program = process.virtualMachine.program;
WriteHandleResponse writeHandleResponse = (WriteHandleResponse)resource;
program.registers.A = writeHandleResponse.status;
program.registers.CX = writeHandleResponse.amountWritten;
program.registers.SI = SiInt.None;
break;
}
case ResType.CloseHandleResponse:
case ResType.DeleteHandleResponse:
case ResType.SeekHandleResponse:
{
Program program = process.virtualMachine.program;
program.registers.SI = SiInt.None;
// do nothing - just wait and release
break;
}
default:
throw new NotImplementedException();
}
}