void AssignProcessToJobObject()
{
var securityAttributes = new WinInterop.SecurityAttributes();
securityAttributes.nLength = Marshal.SizeOf(securityAttributes);
hJob = CheckResult(WinJobs.NativeMethods.CreateJobObject(securityAttributes, "procgov-" + Guid.NewGuid()));
// create completion port
hIOCP = CheckResult(WinJobs.NativeMethods.CreateIoCompletionPort(WinHandles.NativeMethods.INVALID_HANDLE_VALUE, IntPtr.Zero, IntPtr.Zero, 1));
var assocInfo = new WinJobs.JOBOBJECT_ASSOCIATE_COMPLETION_PORT {
CompletionKey = IntPtr.Zero,
CompletionPort = hIOCP
};
uint size = (uint)Marshal.SizeOf(assocInfo);
CheckResult(WinJobs.NativeMethods.SetInformationJobObject(hJob, WinJobs.JOBOBJECTINFOCLASS.AssociateCompletionPortInformation,
ref assocInfo, size));
// start listening thread
listener = new Thread(CompletionPortListener);
listener.Start(hIOCP);
WinJobs.JobInformationLimitFlags flags = WinJobs.JobInformationLimitFlags.JOB_OBJECT_LIMIT_BREAKAWAY_OK
| WinJobs.JobInformationLimitFlags.JOB_OBJECT_LIMIT_SILENT_BREAKAWAY_OK;
if (maxProcessMemory > 0)
{
flags |= WinJobs.JobInformationLimitFlags.JOB_OBJECT_LIMIT_PROCESS_MEMORY;
}
if (cpuAffinityMask != 0)
{
flags |= WinJobs.JobInformationLimitFlags.JOB_OBJECT_LIMIT_AFFINITY;
}
long systemAffinity, processAffinity;
CheckResult(WinProcesses.NativeMethods.GetProcessAffinityMask(hProcess, out processAffinity, out systemAffinity));
// configure constraints
var limitInfo = new WinJobs.JOBOBJECT_EXTENDED_LIMIT_INFORMATION {
BasicLimitInformation = new WinJobs.JOBOBJECT_BASIC_LIMIT_INFORMATION {
LimitFlags = flags,
Affinity = systemAffinity & cpuAffinityMask
},
ProcessMemoryLimit = (UIntPtr)maxProcessMemory
};
size = (uint)Marshal.SizeOf(limitInfo);
CheckResult(WinJobs.NativeMethods.SetInformationJobObject(hJob, WinJobs.JOBOBJECTINFOCLASS.ExtendedLimitInformation,
ref limitInfo, size));
// assign a process to a job to apply constraints
CheckResult(WinJobs.NativeMethods.AssignProcessToJobObject(hJob, hProcess.DangerousGetHandle()));
}
void AssignProcessToJobObject()
{
var securityAttributes = new WinInterop.SecurityAttributes();
securityAttributes.nLength = Marshal.SizeOf(securityAttributes);
hJob = CheckResult(WinJobs.NativeMethods.CreateJobObject(securityAttributes, "procgov-" + Guid.NewGuid()));
// create completion port
hIOCP = CheckResult(WinJobs.NativeMethods.CreateIoCompletionPort(WinHandles.NativeMethods.INVALID_HANDLE_VALUE, IntPtr.Zero, IntPtr.Zero, 1));
var assocInfo = new WinJobs.JOBOBJECT_ASSOCIATE_COMPLETION_PORT {
CompletionKey = IntPtr.Zero,
CompletionPort = hIOCP
};
uint size = (uint)Marshal.SizeOf(assocInfo);
CheckResult(WinJobs.NativeMethods.SetInformationJobObject(hJob, WinJobs.JOBOBJECTINFOCLASS.AssociateCompletionPortInformation,
ref assocInfo, size));
WinJobs.JobInformationLimitFlags flags = 0;
if (!propagateOnChildProcesses)
{
flags |= WinJobs.JobInformationLimitFlags.JOB_OBJECT_LIMIT_SILENT_BREAKAWAY_OK;
}
if (maxProcessMemory > 0)
{
flags |= WinJobs.JobInformationLimitFlags.JOB_OBJECT_LIMIT_PROCESS_MEMORY;
}
if (cpuAffinityMask != 0)
{
flags |= WinJobs.JobInformationLimitFlags.JOB_OBJECT_LIMIT_AFFINITY;
}
if (processUserTimeLimitInMilliseconds > 0)
{
flags |= WinJobs.JobInformationLimitFlags.JOB_OBJECT_LIMIT_PROCESS_TIME;
}
if (jobUserTimeLimitInMilliseconds > 0)
{
flags |= WinJobs.JobInformationLimitFlags.JOB_OBJECT_LIMIT_JOB_TIME;
}
long systemAffinity, processAffinity;
CheckResult(WinProcesses.NativeMethods.GetProcessAffinityMask(hProcess, out processAffinity, out systemAffinity));
// configure constraints
var limitInfo = new WinJobs.JOBOBJECT_EXTENDED_LIMIT_INFORMATION {
BasicLimitInformation = new WinJobs.JOBOBJECT_BASIC_LIMIT_INFORMATION {
LimitFlags = flags,
Affinity = systemAffinity & cpuAffinityMask,
PerProcessUserTimeLimit = 10_000 * processUserTimeLimitInMilliseconds, // in 100ns
PerJobUserTimeLimit = 10_000 * jobUserTimeLimitInMilliseconds // in 100ns
},
void AssignProcessToJobObject()
{
var securityAttributes = new WinInterop.SecurityAttributes();
securityAttributes.nLength = Marshal.SizeOf(securityAttributes);
hJob = CheckResult(WinJobs.NativeMethods.CreateJobObject(securityAttributes, "procgov-" + Guid.NewGuid()));
// create completion port
hIOCP = CheckResult(
WinJobs.NativeMethods.CreateIoCompletionPort(WinHandles.NativeMethods.INVALID_HANDLE_VALUE, IntPtr.Zero,
IntPtr.Zero, 1));
var assocInfo = new WinJobs.JOBOBJECT_ASSOCIATE_COMPLETION_PORT {
CompletionKey = IntPtr.Zero,
CompletionPort = hIOCP
};
uint size = (uint)Marshal.SizeOf(assocInfo);
CheckResult(WinJobs.NativeMethods.SetInformationJobObject(hJob,
WinJobs.JOBOBJECTINFOCLASS.JobObjectAssociateCompletionPortInformation,
ref assocInfo, size));
WinJobs.JobInformationLimitFlags flags = 0;
if (!PropagateOnChildProcesses)
{
flags |= WinJobs.JobInformationLimitFlags.JOB_OBJECT_LIMIT_SILENT_BREAKAWAY_OK;
}
if (MaxProcessMemory > 0)
{
flags |= WinJobs.JobInformationLimitFlags.JOB_OBJECT_LIMIT_PROCESS_MEMORY;
}
if (MaxWorkingSetSize > 0)
{
flags |= WinJobs.JobInformationLimitFlags.JOB_OBJECT_LIMIT_WORKINGSET;
}
if (ProcessUserTimeLimitInMilliseconds > 0)
{
flags |= WinJobs.JobInformationLimitFlags.JOB_OBJECT_LIMIT_PROCESS_TIME;
}
if (JobUserTimeLimitInMilliseconds > 0)
{
flags |= WinJobs.JobInformationLimitFlags.JOB_OBJECT_LIMIT_JOB_TIME;
}
// only if NUMA node is not provided we will set the CPU affinity,
// otherwise we will set the affinity on a selected NUMA node
if (CpuAffinityMask != 0 && numaNode == 0xffff)
{
flags |= WinJobs.JobInformationLimitFlags.JOB_OBJECT_LIMIT_AFFINITY;
}
CheckResult(WinProcesses.NativeMethods.GetProcessAffinityMask(hProcess, out _, out var systemAffinityMask));
if (flags != 0)
{
// configure basic constraints
var limitInfo = new WinJobs.JOBOBJECT_EXTENDED_LIMIT_INFORMATION {
BasicLimitInformation = new WinJobs.JOBOBJECT_BASIC_LIMIT_INFORMATION {
LimitFlags = flags,
Affinity = systemAffinityMask & CpuAffinityMask,
PerProcessUserTimeLimit = 10_000 * ProcessUserTimeLimitInMilliseconds, // in 100ns
PerJobUserTimeLimit = 10_000 * JobUserTimeLimitInMilliseconds, // in 100ns
MaximumWorkingSetSize = (UIntPtr)MaxWorkingSetSize,
},
public static extern bool SetInformationJobObject(IntPtr hJob, JOBOBJECTINFOCLASS JobObjectInfoClass,
ref JOBOBJECT_ASSOCIATE_COMPLETION_PORT lpJobObjectInfo, uint cbJobObjectInfoLength);