Hi,
I am using Job objects on windows server 2008 R2 within a .NET 4.0 windows service application.
The job created in the following way:
_hJob = CreateJobObject(IntPtr.Zero, jobName);
if (_hJob == IntPtr.Zero)
throw new JobManagementException("CreateJobObject failed");
JobName = jobName;
var basicInfo = new JOBOBJECT_BASIC_LIMIT_INFORMATION();
basicInfo.LimitFlags = JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE;
var extendedInfo = new JOBOBJECT_EXTENDED_LIMIT_INFORMATION();
extendedInfo.BasicLimitInformation = basicInfo;
int length = Marshal.SizeOf(typeof(JOBOBJECT_EXTENDED_LIMIT_INFORMATION));
if (!SetInformationJobObject(_hJob, JobObjectExtendedLimitInformation, ref extendedInfo, (uint)length))
throw new JobManagementException("SetInformationJobObject failed");
_hIoCompletionPort = CreateIoCompletionPort(new IntPtr(-1), IntPtr.Zero, UIntPtr.Zero, 1);
if (_hIoCompletionPort == IntPtr.Zero)
{
throw new JobManagementException("CreateIoCompletionPort failed");
}
var ioPort = new JOBOBJECT_ASSOCIATE_COMPLETION_PORT();
ioPort.CompletionKey = IntPtr.Zero;
ioPort.CompletionPort = _hIoCompletionPort;
length = Marshal.SizeOf(typeof(JOBOBJECT_ASSOCIATE_COMPLETION_PORT));
if (!SetInformationJobObject(_hJob, JobObjectAssociateCompletionPortInformation, ref ioPort, (uint)length))
throw new JobManagementException("SetInformationJobObject failed");Each time I want to add a process to a job I use this :
var si = new STARTUPINFO();
var pi = new PROCESS_INFORMATION();
bool success = CreateProcess(null, commandLine,
IntPtr.Zero, IntPtr.Zero, false,
ProcessCreationFlags.CREATE_SUSPENDED | // wait until we assign it to this job
ProcessCreationFlags.CREATE_BREAKAWAY_FROM_JOB | // don't join the parent's job (for example, when running under a debugger job)
ProcessCreationFlags.CREATE_NEW_CONSOLE,
IntPtr.Zero, null, ref si, out pi);
if (!success)
throw new JobManagementException("CreateProcess failed");
if (!AssignProcessToJobObject(_hJob, pi.hProcess))
throw new JobManagementException("AssignProcessToJobObject failed");
if (-1 == ResumeThread(pi.hThread))
throw new JobManagementException("ResumeThread failed");Everything works great until at some point, usually when ~60 processes already running, the additional process I try to run crashes with OutOfMemoryException.
I don't use any process amount limit, and no memory limits.
The machine has 32GB of RAM and only 12GB are used.
Am I missing something ?
Thanks,
Roman