internal TargetInProgessState
(
EngineCallback engineCallback,
Target target,
List <ProjectBuildState> waitingBuildStates,
ProjectBuildState initiatingRequest,
BuildRequest [] outstandingBuildRequests,
string projectName
)
{
this.targetId = new TargetIdWrapper(target);
this.outstandingBuildRequests = outstandingBuildRequests;
// For each waiting build context try to find the parent target
this.parentBuildRequests = new List <BuildRequest>();
this.parentTargets = new List <TargetIdWrapper>();
this.projectName = projectName;
// Process the waiting contexts if there are any
if (waitingBuildStates != null)
{
for (int i = 0; i < waitingBuildStates.Count; i++)
{
ProcessBuildContext(engineCallback, waitingBuildStates[i], target);
}
}
// Process the initiating context
ProcessBuildContext(engineCallback, initiatingRequest, target);
}
/// <summary>
/// Given a build state try to find the parent target that caused this build state to
/// come into being either via dependent, on error relationship or via IBuildEngine call
/// </summary>
internal TargetIdWrapper FindParentTarget
(
EngineCallback engineCallback,
ProjectBuildState buildContext,
Target target,
out BuildRequest parentRequest
)
{
// We need to find the parent target
parentRequest = null;
// Skip build states that have already been filled
if (buildContext.CurrentBuildContextState == ProjectBuildState.BuildContextState.RequestFilled)
{
return(null);
}
// Check if the target was called due to a onerror or depends on call
if (buildContext.ContainsBlockingTarget(target.Name))
{
// Figure out the record for the parent target
Project containingProject = target.ParentProject;
Target parentTarget = containingProject.Targets[buildContext.GetParentTarget(target.Name)];
return(new TargetIdWrapper(parentTarget));
}
else
{
// The build context must have formed due to IBuildEngine call
ErrorUtilities.VerifyThrow(
String.Compare(EscapingUtilities.UnescapeAll(buildContext.NameOfTargetInProgress), target.Name, StringComparison.OrdinalIgnoreCase) == 0,
"The target should be the in progress target for the context");
// This target is called due to IBuildEngine or host request
return(FindParentTargetForBuildRequest(engineCallback, buildContext.BuildRequest, out parentRequest));
}
}
internal TargetCycleDetector(EngineLoggingServices engineLoggingService, EngineCallback engineCallback)
{
this.engineLoggingService = engineLoggingService;
this.engineCallback = engineCallback;
dependencyGraph = new Hashtable();
outstandingExternalRequests = new Hashtable();
cycleParent = null;
cycleChild = null;
}
/// <summary>
/// Figure out the parent target or the parent build request for the given context
/// </summary>
private void ProcessBuildContext(EngineCallback engineCallback, ProjectBuildState buildContext, Target target)
{
BuildRequest parentRequest = null;
TargetIdWrapper parentName = FindParentTarget(engineCallback, buildContext, target, out parentRequest);
if (parentName != null)
{
parentTargets.Add(parentName);
}
if (parentRequest != null)
{
parentBuildRequests.Add(parentRequest);
}
}
/// <summary>
/// Given a build request try to find the target that caused it to come into being
/// </summary>
private TargetIdWrapper FindParentTargetForBuildRequest
(
EngineCallback engineCallback,
BuildRequest triggeringBuildRequest,
out BuildRequest parentTriggeringRequest
)
{
parentTriggeringRequest = null;
// If request is non-external and generated due to IBuildEngine call try
// to find the target that caused the IBuildEngine call
if (triggeringBuildRequest.IsGeneratedRequest && !triggeringBuildRequest.IsExternalRequest)
{
ExecutionContext executionContext =
engineCallback.GetExecutionContextFromHandleId(triggeringBuildRequest.HandleId);
// If the parent context is not a routing context than we can
// get the parent target from it
if (executionContext is TaskExecutionContext)
{
return(new TargetIdWrapper(((TaskExecutionContext)executionContext).ParentTarget));
}
// If the parent context if a routing context the parent target is not available
// on the current node, so store the request instead
else
{
parentTriggeringRequest = triggeringBuildRequest;
}
}
// If the request is external to the node - store the request since the parent target
// is not available
else if (triggeringBuildRequest.IsExternalRequest)
{
parentTriggeringRequest = triggeringBuildRequest;
}
else
{
requestedByHost = true;
}
return(null);
}
/// <summary>
/// The TaskExecutionModule is a the external view into a subsystem responsible for executing user
/// tasks. The subsystem consists of TaskWorkerThread, TaskEngine, TaskExecutionState and EngineProxy.
/// The engine thread passes the TaskExecutionState to the TEM which after the task finishes passes the
/// results back via the engineCallback.
/// </summary>
internal TaskExecutionModule
(
EngineCallback engineCallback,
TaskExecutionModuleMode moduleMode,
bool profileExecution
)
{
this.engineCallback = engineCallback;
this.moduleMode = moduleMode;
// By default start in breadthFirst traversal. This is done to gather enough work at the start of the build to get all the nodes at least working on something.
this.breadthFirstTraversal = true;
this.profileExecution = profileExecution;
this.totalTaskTime = 0;
// Get the node the TEM is running on, this is so the parent engine knows which node is requesting a traversal strategy change.
nodeId = engineCallback.GetParentEngine().NodeId;
SetBatchRequestSize();
// In singleproc mode the task execution module executes tasks on the engine thread. In multi proc mode a new thread is
// created so the TEM can submit tasks to a worker queue which will run the tasks on a new thread.
if (moduleMode != TaskExecutionModuleMode.SingleProcMode)
{
this.isRunningMultipleNodes = true;
this.activeThreadCount = 0;
this.overallThreadCount = 0;
this.threadActiveCountEvent = new ManualResetEvent(false);
this.threadOverallCountEvent = new ManualResetEvent(false);
this.lastTaskActivity = 0;
// Create a worker thread and make it the active node thread
workerThread = new TaskWorkerThread(this, profileExecution);
workerThread.ActivateThread();
}
else
{
this.isRunningMultipleNodes = false;
}
}
/// <summary>
/// This function checks if the given ProjectBuildState is caused by a given parent target (via
/// a dependency, onerror or IBuildEngine relationship)
/// </summary>
internal bool CheckBuildContextForParentMatch
(
EngineCallback engineCallback,
TargetIdWrapper parentId,
Target target,
ProjectBuildState projectBuildState
)
{
BuildRequest parentRequest = null;
TargetInProgessState.TargetIdWrapper parentName =
FindParentTarget(engineCallback, projectBuildState, target, out parentRequest);
if (parentName != null && parentName.Equals(parentId))
{
return(true);
}
if (parentRequest != null)
{
for (int j = 0; j < parentBuildRequests.Count; j++)
{
if (parentRequest.HandleId == parentBuildRequests[j].HandleId &&
parentRequest.RequestId == parentBuildRequests[j].RequestId)
{
if (parentTargetsForBuildRequests[j].Equals(parentId))
{
return(true);
}
else
{
return(false);
}
}
}
}
return(false);
}
