private void FinalizeRequest()
{
lock (mMessages)
{
if (mState == BuildTaskState.Aborting)
{
// Don't care if the task actually finished.
// An abort takes presidence.
mState = BuildTaskState.Aborted;
mData = default(T);
}
else
{
try
{
mState = GetResult(out mData) ? BuildTaskState.Complete : BuildTaskState.Aborted;
}
catch (System.Exception ex)
{
FinalizeRequest(ex);
}
}
mIsFinished = true; // Always last.
}
}
/// <summary>
/// Runs the task through to a finished state.
/// </summary>
/// <remarks>
/// <para>
/// Never call this method more than once.
/// </para>
/// <para>
/// If <see cref="IsThreadSafe"/> is true, this method can be run on a separate
/// thread from the object(s) that are monitoring the task state.
/// </para>
/// </remarks>
public void Run()
{
lock (mMessages)
{
if (mState != BuildTaskState.Inactive)
{
return;
}
mState = BuildTaskState.InProgress;
}
try
{
while (LocalUpdate())
{
lock (mMessages)
{
if (mState == BuildTaskState.Aborting)
{
break;
}
}
}
FinalizeRequest();
}
catch (System.Exception ex)
{
FinalizeRequest(ex);
}
finally
{
FinalizeTask();
}
}
private void FinalizeRequest(System.Exception ex)
{
lock (mMessages)
{
mMessages.Add(string.Format("Build task aborted on exception: {0} ({1})"
, ex.Message, this.GetType().Name));
mData = default(T);
mState = BuildTaskState.Aborted;
mIsFinished = true;
}
}
/// <summary>
/// Requests an abort of the task.
/// </summary>
/// <remarks>
/// <para>
/// There may be a delay in the actual abort for tasks running on a separate thread.
/// </para>
/// </remarks>
/// <param name="reason">The reason for the abort.</param>
public void Abort(string reason)
{
lock (mMessages)
{
if (mIsFinished)
{
return;
}
AddMessage(reason);
if (mState == BuildTaskState.Inactive)
{
mState = BuildTaskState.Aborting;
FinalizeRequest();
}
else
{
mState = BuildTaskState.Aborting;
}
}
}