internal CachedGraphLoader TryLoad(
LoggingContext loggingContext,
CancellationToken cancellationToken,
Guid graphIdOfGraphToReload)
{
if (m_graphId != graphIdOfGraphToReload)
{
Logger.Log.DisposedEngineStateDueToGraphId(loggingContext);
Dispose();
return(null);
}
var graphLoader = CachedGraphLoader.CreateFromEngineState(cancellationToken, this);
Contract.Assert(graphLoader != null);
// The graph is loaded from the engine state.
Logger.Log.ReusedEngineState(loggingContext);
return(graphLoader);
}
/// <summary>
/// Loads the cache graph store in the given directory
/// </summary>
public static async Task <CachedGraph> LoadAsync(string cachedGraphDirectory, LoggingContext loggingContext, bool preferLoadingEngineCacheInMemory, FileSystemStreamProvider readStreamProvider = null)
{
// preferLoadingEngineCacheInMemory will be removed after ExecutionLog.cs is updated in OSGTools.
var unused = preferLoadingEngineCacheInMemory;
CachedGraphLoader loadingGraph = CachedGraphLoader.CreateFromDisk(CancellationToken.None, cachedGraphDirectory, loggingContext, readStreamProvider);
var graphId = await loadingGraph.GetOrLoadPipGraphIdAsync();
// Use a the cached graph based on graph id if already in memory
if (s_loadedCachedGraphs.TryGetValue(graphId, out var weakCachedGraph) &&
weakCachedGraph.TryGetTarget(out var cachedGraph))
{
return(cachedGraph);
}
cachedGraph = await loadingGraph.GetOrLoadCachedGraphAsync();
if (cachedGraph?.PipGraph != null)
{
s_loadedCachedGraphs.AddItem(cachedGraph.PipGraph.GraphId, new WeakReference <CachedGraph>(cachedGraph));
}
return(cachedGraph);
}