public BuildErrorInfo(string filePath, int lineNumber, string errorMessage, BuildInitiatorProcessViewModel initiatorProcess)
{
this.FilePath = filePath;
this.LineNumber = lineNumber;
this.ErrorMessage = errorMessage;
this.InitiatorProcess = initiatorProcess;
this.OpenFileCommand = new SimpleCommand(this.ExecuteOpenFile, this.CanExecuteOpenFile);
}
private InitiatorProcessQueryResult GetInitiatorProcessId(int id, out int initiatorId)
{
initiatorId = -1;
Process currentProcess;
try
{
currentProcess = Process.GetProcessById(id);
}
catch (ArgumentException)
{
// the fbuild process is already terminated
return(InitiatorProcessQueryResult.Exited);
}
if (!BuildInitiatorProcessViewModel.GetIsProcessAccessible(id))
{
return(InitiatorProcessQueryResult.AccessDenied);
}
var startTime = currentProcess.StartTime;
var parentId = WinAPIUtils.GetParentProcessId(id);
if (!BuildInitiatorProcessViewModel.GetIsProcessAccessible(parentId))
{
return(InitiatorProcessQueryResult.AccessDenied);
}
try
{
var process = Process.GetProcessById(parentId);
if (process.StartTime > startTime)
{
// parent is already exited, this 'process' is just a fake one which
// reused parent's process id - try to find a wrapped initator
return(this.GetWrappedInitiatorProcessId(currentProcess, out initiatorId));
}
return(GetRootProcessId(id, startTime, out initiatorId));
}
catch (ArgumentException)
{
// parent not found - try to find a wrapped initator
return(this.GetWrappedInitiatorProcessId(currentProcess, out initiatorId));
}
}
private InitiatorProcessQueryResult GetWrappedInitiatorProcessId(Process process, out int initiatorId)
{
// FASTBuild uses a process wrapping mechanism to spawn a chain of (3) processes
// in order to finally get a "standalone" process which is not a child/descendant
// process of the build initiator by terminating the "intermediate" process so
// the derivation chain is cut.
// we use a tricky approach here to find the initiator, but it's best to output
// the initiator process ID directly from FASTBuild
// first, find other fbuild.exe processes
var processes = Process.GetProcessesByName(process.ProcessName)
.Where(p => BuildInitiatorProcessViewModel.GetIsProcessAccessible(p.Id) && p.Id != process.Id);
// and pick out the one which is started right before our fbuild process
// this is hacky and maybe not reliable in a small chance
var minDeltaTime = double.MaxValue;
Process candidateSourceProcess = null;
foreach (var p in processes)
{
var deltaTime = (process.StartTime - p.StartTime).TotalSeconds;
if (deltaTime < 0)
{
continue;
}
if (deltaTime < minDeltaTime)
{
candidateSourceProcess = p;
minDeltaTime = deltaTime;
}
}
if (candidateSourceProcess == null)
{
initiatorId = -1;
return(InitiatorProcessQueryResult.Exited);
}
return(this.GetRootProcessId(candidateSourceProcess.Id, candidateSourceProcess.StartTime, out initiatorId));
}
private InitiatorProcessQueryResult GetRootProcessId(int id, DateTime startTime, out int rootId)
{
while (true)
{
var parentId = WinAPIUtils.GetParentProcessId(id);
if (parentId <= 0)
{
// root reached
rootId = id;
return(InitiatorProcessQueryResult.Success);
}
if (!BuildInitiatorProcessViewModel.GetIsProcessAccessible(parentId))
{
// parent not accessible (access deined etc.), which might be running under a system account (e.g. svchost)
// assume root reached
rootId = id;
return(InitiatorProcessQueryResult.Success);
}
Process parentProcess;
try
{
parentProcess = Process.GetProcessById(parentId);
}
catch (ArgumentException)
{
// parent exited - root reached
rootId = id;
return(InitiatorProcessQueryResult.Success);
}
if (parentProcess.StartTime > startTime)
{
// parent exited (and its id is reused by a newer process) - root reached
rootId = id;
return(InitiatorProcessQueryResult.Success);
}
if (parentProcess.ProcessName == "devenv")
{
// special care for Visual Studio: stop traverse up even if there are more
// ancestors (e.g. Visual Studio started by a command line)
// todo: this is not really reliable, we need more evidence to prove this
// is a Visual Studio process
rootId = parentId;
return(InitiatorProcessQueryResult.Success);
}
if (parentProcess.ProcessName == "explorer")
{
// most programs are started from explorer
// todo: this is not really reliable, we need more evidence to prove this
// is an explorer process
rootId = id;
return(InitiatorProcessQueryResult.Success);
}
id = parentId;
startTime = parentProcess.StartTime;
}
}
