internal IRP(IoFlowRuntime ioFlow, SafeFileHandle hPort)
{
this.runtime = ioFlow;
this.hPort = hPort;
Data = new byte[SIZEOF_IRP_USER_IO_BUFFER];
gcDataBuffer = GCHandle.Alloc(Data, GCHandleType.Pinned);
pDataBuffer = (ulong)gcDataBuffer.AddrOfPinnedObject().ToInt64();
lpMessageBuffer = gcDataBuffer.AddrOfPinnedObject();
hEvent = CreateEvent(IntPtr.Zero, false, false, IntPtr.Zero);
overlapped = new OVERLAPPED();
gcOVERLAPPED = GCHandle.Alloc(overlapped, GCHandleType.Pinned);
addrOverlapped = gcOVERLAPPED.AddrOfPinnedObject();
overlapped.hEvent = hEvent;
BackupHeaderBuffer = new byte[IOFLOW_HEADER.SIZEOF_IOFLOW_HEADER];
ioFlowHeader = new IOFLOW_HEADER(BackupHeaderBuffer);
}
public bool Start()
{
string thisMachine = System.Environment.MachineName.ToLower();
//
// Initialize IoFlow runtime.
//
IoFlowRuntime runtime = new IoFlowRuntime((uint)Mpl);
string line;
// get info from config file
Debug.Assert(inputConfig != null && File.Exists(inputConfig));
string[] separators = new string[] { " ", "\t" };
System.IO.StreamReader f = new System.IO.StreamReader(inputConfig);
// line has entries SRV_NAME, VM_NAME, VHD_NAME, cacheSizeMB, IO_req_size, write-back/write-through, noCacheWrites/cacheWrites
while ((line = f.ReadLine()) != null)
{
string[] tokens = line.Split(separators, StringSplitOptions.RemoveEmptyEntries);
if (tokens.Length == 0)
continue;
else if (tokens[0].StartsWith(@"#") || tokens[0].StartsWith(@"//"))
continue;
if (tokens.Length < 7)
{
throw new ApplicationException(String.Format("invalid config file"));
}
if (!(tokens[5].Equals("write-through") || tokens[5].Equals("write-back")))
{
throw new ApplicationException(String.Format("invalid config file"));
}
if (!(tokens[6].Equals("cacheWrites") || tokens[6].Equals("noCacheWrites")))
{
throw new ApplicationException(String.Format("invalid config file"));
}
Console.WriteLine("Got tokens {0}, {1}, {2}, {3}, {4}, {5}, {6}", tokens[0], tokens[1], tokens[2], tokens[3], tokens[4], tokens[5], tokens[6]);
if (thisMachine.StartsWith(tokens[0].ToLower()))
{
IoFlow f1 = runtime.CreateFlow(runtime.GetNextFreeFlowId(), tokens[1].ToLower(), tokens[2].ToLower(), PreCreate, null, PreRead, PostRead, PreWrite, PostWrite, PreCleanup, null, null, null);
cache.CacheSetFlowSize(f1.FlowId, Convert.ToUInt64(tokens[3]));
//cache.CacheCreateGhostCache(f1.FlowId, Convert.ToUInt32(tokens[4])); //XXXIS: this should come from the controller...
cache.AlignedBlockSize = Convert.ToUInt32(tokens[4]);
switch (tokens[5])
{
case "write-through":
cache.SetCacheWritePolicy(CacheWritePolicy.WriteThrough);
break;
}
switch (tokens[6])
{
case "cacheWrites":
cache.SetCacheWriteBuffering(CacheWriteBuffer.Cache);
break;
case "noCacheWrites":
cache.SetCacheWriteBuffering(CacheWriteBuffer.noCache);
break;
}
}
}
runtime.Start(false);
CacheThreadBlocked.WaitOne();
runtime.Close();
return true;
}
internal IRP(IoFlowRuntime ioFlow, SafeFileHandle hPort)
{
this.runtime = ioFlow;
this.hPort = hPort;
Data = new byte[SIZEOF_IRP_USER_IO_BUFFER];
gcDataBuffer = GCHandle.Alloc(Data, GCHandleType.Pinned);
pDataBuffer = (ulong)gcDataBuffer.AddrOfPinnedObject().ToInt64();
lpMessageBuffer = gcDataBuffer.AddrOfPinnedObject();
hEvent = CreateEvent(IntPtr.Zero, false, false, IntPtr.Zero);
overlapped = new OVERLAPPED();
gcOVERLAPPED = GCHandle.Alloc(overlapped, GCHandleType.Pinned);
addrOverlapped = gcOVERLAPPED.AddrOfPinnedObject();
overlapped.hEvent = hEvent;
BackupHeaderBuffer = new byte[IOFLOW_HEADER.SIZEOF_IOFLOW_HEADER];
ioFlowHeader = new IOFLOW_HEADER(BackupHeaderBuffer);
}