public async Task RunAsync()
{
using (var jobObject = new JobObject())
{
// setup some limits, we do this before starting any processes, but it's not
// required..
var jobLimits = new JobLimits();
jobLimits.CpuRate = new CpuRateLimit(10.0m, false);
jobLimits.Options = JobOptions.TerminateProcessesWhenJobClosed;
jobLimits.ActiveProcesses = 3;
jobObject.SetLimits(jobLimits);
// setup a few event handlers..
jobObject.ProcessAdded += (s, e) => Console.WriteLine($"Process {e.ID} added.");
jobObject.ProcessExited += (s, e) => Console.WriteLine($"Process {e.ID} exited.");
jobObject.ProcessLimitExceeded += (s, e) => Console.WriteLine("Process limit exceeded.");
jobObject.CpuRateLimitExceeded += (s, e) => Console.WriteLine("CPU rate limit exceeded.");
// configure CPU rate notification..
var jobNotifications = new JobNotifications();
jobNotifications.CpuRate = new RateControl(RateControlInterval.Short, RateControlTolerance.Low);
// start some ping processes...
var cpiPing = new CreateProcessInfo
{
FileName = "ping.exe",
ArgumentsList = { "8.8.8.8", "-t" }
};
// create ping processes, directly through the JobObject, this will create the process
// and associate the process with the JobObject ..
for (int iIndex = 0; iIndex < 10; iIndex++)
{
try
{
using (var process = jobObject.CreateProcess(cpiPing))
Console.WriteLine($"Created Process {process.Id}");
}
catch (System.ComponentModel.Win32Exception ex) when(ex.NativeErrorCode == ERROR_NOT_ENOUGH_QUOTA)
{
// ERROR_NOT_ENOUGH_QUOTA happens if the process cannot be assigned to the job object
// because of the active process limit..
Console.WriteLine("JobObject.CreateProcess failed, due to process limit.");
}
}
Console.WriteLine("[enter] to terminate active processes.");
Console.ReadLine();
jobObject.Kill();
// wait for JobObject to become idle..
await jobObject.Idle;
}
}
