/// <summary>
/// Converts the class to a NATIVE_COMMIT_ID structure.
/// </summary>
/// <returns>A NATIVE_COMMIT_ID structure.</returns>
internal NATIVE_COMMIT_ID GetNativeCommitId()
{
NATIVE_COMMIT_ID native = new NATIVE_COMMIT_ID();
native.signLog = this.signLog.GetNativeSignature();
native.commitId = checked ((long)this.commitId);
return(native);
}
/// <summary>
/// The proxy callback function to call the user-defined managed delegate.
/// </summary>
/// <param name="instance">
/// The instance.
/// </param>
/// <param name="commitIdSeen">
/// The commit-id flushed.
/// </param>
/// <param name="grbit">
/// Reserved currently.
/// </param>
/// <returns>
/// An error code.
/// </returns>
private JET_err NativeDurableCommitCallback(
IntPtr instance,
ref NATIVE_COMMIT_ID commitIdSeen,
uint grbit)
{
RuntimeHelpers.PrepareConstrainedRegions();
try
{
JET_INSTANCE jetInstance = new JET_INSTANCE()
{
Value = instance
};
if (this.instance != jetInstance)
{
// We assume it's only called on one instance at a time. The only thing
// we really care about is serialization of the byte array.
//
// It would be nice to throw an error, but we're going back to real
// code, which doesn't deal with managed exceptions well.
return(JET_err.CallbackFailed);
}
JET_COMMIT_ID commitId = new JET_COMMIT_ID(commitIdSeen);
return(this.wrappedCallback(jetInstance, commitId, (DurableCommitCallbackGrbit)grbit));
}
catch (Exception ex)
{
Trace.WriteLineIf(
TraceSwitch.TraceWarning, string.Format(CultureInfo.InvariantCulture, "Caught Exception {0}", ex));
JetApi.ReportUnhandledException(ex, "Unhandled exception during NativeDurableCommitCallback");
// This should never be executed, but the compiler doesn't know it.
return(JET_err.CallbackFailed);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="JET_COMMIT_ID"/> class.
/// </summary>
/// <param name="native">The native version of the structure.
/// to use as the data source.</param>
internal JET_COMMIT_ID(NATIVE_COMMIT_ID native)
{
this.signLog = new JET_SIGNATURE(native.signLog);
this.commitId = native.commitId;
}