private void InnerBegin()
{
Contract.Ensures(_State == TransactionState.Active);
// we have a ongoing current transaction, join it!
if (System.Transactions.Transaction.Current != null)
{
var ktx = (IKernelTransaction) TransactionInterop.GetDtcTransaction(System.Transactions.Transaction.Current);
SafeKernelTransactionHandle handle;
ktx.GetHandle(out handle);
// even though _TransactionHandle can already contain a handle if this thread
// had been yielded just before setting this reference, the "safe"-ness of the wrapper should
// not dispose the other handle which is now removed
_TransactionHandle = handle;
//IsAmbient = true; // TODO: Perhaps we created this item and we need to notify the transaction manager...
}
else _TransactionHandle = NativeMethods.createTransaction(string.Format("{0} Transaction", _Name));
if (!_TransactionHandle.IsInvalid)
{
_State = TransactionState.Active;
return;
}
throw new TransactionException(
"Cannot begin file transaction. CreateTransaction failed and there's no ambient transaction.",
LastEx());
}
internal static extern bool RemoveDirectoryTransactedW( [MarshalAs(UnmanagedType.LPWStr)] string lpPathName, SafeKernelTransactionHandle hTransaction);
internal static extern bool CommitTransaction(SafeKernelTransactionHandle transaction);
internal static extern bool CreateDirectoryTransactedW( [MarshalAs(UnmanagedType.LPWStr)] string lpTemplateDirectory, [MarshalAs(UnmanagedType.LPWStr)] string lpNewDirectory, IntPtr lpSecurityAttributes, SafeKernelTransactionHandle hTransaction);
/// <summary>
/// Not extern
/// </summary>
internal static SafeFindHandle FindFirstFileTransactedW(string lpFileName,
SafeKernelTransactionHandle kernelTxHandle, out WIN32_FIND_DATA lpFindFileData)
{
return FindFirstFileTransactedW(lpFileName, FINDEX_INFO_LEVELS.FindExInfoStandard,
out lpFindFileData,
FINDEX_SEARCH_OPS.FindExSearchNameMatch,
IntPtr.Zero, 0,
kernelTxHandle);
}
/// <summary>
/// Not extern
/// </summary>
internal static SafeFindHandle FindFirstFileTransacted(string filePath, bool directory, SafeKernelTransactionHandle kernelTxHandle)
{
WIN32_FIND_DATA data;
#if MONO
const uint caseSensitive = 0x1;
#else
const uint caseSensitive = 0;
#endif
return FindFirstFileTransactedW(filePath,
FINDEX_INFO_LEVELS.FindExInfoStandard, out data,
directory
? FINDEX_SEARCH_OPS.FindExSearchLimitToDirectories
: FINDEX_SEARCH_OPS.FindExSearchNameMatch,
IntPtr.Zero, caseSensitive, kernelTxHandle);
}
internal static extern bool DeleteFileTransactedW( [MarshalAs(UnmanagedType.LPWStr)] string file, SafeKernelTransactionHandle transaction);
internal static extern bool RollbackTransaction(SafeKernelTransactionHandle transaction);