Exemple pratique de Createjobject / Setinformationjobject pinvoke in.net Je ne sais pas.
j'ai du mal à assembler un exemple fonctionnel de pinvoke ' ing Createjobject et SetInformationJobObject. Grâce à diverses recherches google (y compris les messages russes et Chinois! J'ai concocté le code suivant. Je pense que la définition de JOBOBJECT_BASIC_LIMIT_INFORMATION change en fonction de la plateforme (32/64-bit). Le Createjobject / AssignProcessToJobObject semble à travailler. SetInformationJobObject échoue - soit avec l'erreur 24 ou 87.
Process myProcess // POPULATED SOMEWHERE ELSE
// Create Job & assign this process and another process to the job
IntPtr jobHandle = CreateJobObject( null , null );
AssignProcessToJobObject( jobHandle , myProcess.Handle );
AssignProcessToJobObject( jobHandle , Process.GetCurrentProcess().Handle );
// Ensure that killing one process kills the others
JOBOBJECT_BASIC_LIMIT_INFORMATION limits = new JOBOBJECT_BASIC_LIMIT_INFORMATION();
limits.LimitFlags = (short)LimitFlags.JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE;
IntPtr pointerToJobLimitInfo = Marshal.AllocHGlobal( Marshal.SizeOf( limits ) );
Marshal.StructureToPtr( limits , pointerToJobLimitInfo , false );
SetInformationJobObject( job , JOBOBJECTINFOCLASS.JobObjectBasicLimitInformation , pionterToJobLimitInfo , ( uint )Marshal.SizeOf( limits ) )
...
[DllImport( "kernel32.dll" , EntryPoint = "CreateJobObjectW" , CharSet = CharSet.Unicode )]
public static extern IntPtr CreateJobObject( SecurityAttributes JobAttributes , string lpName );
public class SecurityAttributes
{
public int nLength; //Useless field = 0
public IntPtr pSecurityDescriptor; //хз))
public bool bInheritHandle; //Возможность наследования
public SecurityAttributes()
{
this.bInheritHandle = true;
this.nLength = 0;
this.pSecurityDescriptor = IntPtr.Zero;
}
}
[DllImport( "kernel32.dll" )]
static extern bool SetInformationJobObject( IntPtr hJob , JOBOBJECTINFOCLASS JobObjectInfoClass , IntPtr lpJobObjectInfo , uint cbJobObjectInfoLength );
public enum JOBOBJECTINFOCLASS
{
JobObjectAssociateCompletionPortInformation = 7 ,
JobObjectBasicLimitInformation = 2 ,
JobObjectBasicUIRestrictions = 4 ,
JobObjectEndOfJobTimeInformation = 6 ,
JobObjectExtendedLimitInformation = 9 ,
JobObjectSecurityLimitInformation = 5
}
[StructLayout( LayoutKind.Sequential )]
struct JOBOBJECT_BASIC_LIMIT_INFORMATION
{
public Int64 PerProcessUserTimeLimit;
public Int64 PerJobUserTimeLimit;
public Int16 LimitFlags;
public UIntPtr MinimumWorkingSetSize;
public UIntPtr MaximumWorkingSetSize;
public Int16 ActiveProcessLimit;
public Int64 Affinity;
public Int16 PriorityClass;
public Int16 SchedulingClass;
}
public enum LimitFlags
{
JOB_OBJECT_LIMIT_ACTIVE_PROCESS = 0x00000008 ,
JOB_OBJECT_LIMIT_AFFINITY = 0x00000010 ,
JOB_OBJECT_LIMIT_BREAKAWAY_OK = 0x00000800 ,
JOB_OBJECT_LIMIT_DIE_ON_UNHANDLED_EXCEPTION = 0x00000400 ,
JOB_OBJECT_LIMIT_JOB_MEMORY = 0x00000200 ,
JOB_OBJECT_LIMIT_JOB_TIME = 0x00000004 ,
JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE = 0x00002000 ,
JOB_OBJECT_LIMIT_PRESERVE_JOB_TIME = 0x00000040 ,
JOB_OBJECT_LIMIT_PRIORITY_CLASS = 0x00000020 ,
JOB_OBJECT_LIMIT_PROCESS_MEMORY = 0x00000100 ,
JOB_OBJECT_LIMIT_PROCESS_TIME = 0x00000002 ,
JOB_OBJECT_LIMIT_SCHEDULING_CLASS = 0x00000080 ,
JOB_OBJECT_LIMIT_SILENT_BREAKAWAY_OK = 0x00001000 ,
JOB_OBJECT_LIMIT_WORKINGSET = 0x00000001
}
[DllImport( "kernel32.dll" )]
[return: MarshalAs( UnmanagedType.Bool )]
static extern bool AssignProcessToJobObject( IntPtr hJob , IntPtr hProcess );
[StructLayout( LayoutKind.Sequential )]
public struct SECURITY_ATTRIBUTES
{
public int nLength;
public IntPtr lpSecurityDescriptor;
public int bInheritHandle;
}
4 réponses
cela peut être un peu en retard, mais quand même.
j'ai essayé tous les exemples ici, mais personne ne travaillait pour moi en mode 32 et 64 bits simultanément. Finalement, j'ai dû examiner toutes les signatures moi-même et créer des routines PInvoke correspondantes. Je pense, quelqu'un d'autre pourrait trouver cela utile.
Avertissement: la solution est basée sur Matt Howells " réponse .
using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
namespace JobManagement
{
public class Job : IDisposable
{
[DllImport("kernel32.dll", CharSet = CharSet.Unicode)]
static extern IntPtr CreateJobObject(IntPtr a, string lpName);
[DllImport("kernel32.dll")]
static extern bool SetInformationJobObject(IntPtr hJob, JobObjectInfoType infoType, IntPtr lpJobObjectInfo, UInt32 cbJobObjectInfoLength);
[DllImport("kernel32.dll", SetLastError = true)]
static extern bool AssignProcessToJobObject(IntPtr job, IntPtr process);
[DllImport("kernel32.dll", SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool CloseHandle(IntPtr hObject);
private IntPtr handle;
private bool disposed;
public Job()
{
handle = CreateJobObject(IntPtr.Zero, null);
var info = new JOBOBJECT_BASIC_LIMIT_INFORMATION
{
LimitFlags = 0x2000
};
var extendedInfo = new JOBOBJECT_EXTENDED_LIMIT_INFORMATION
{
BasicLimitInformation = info
};
int length = Marshal.SizeOf(typeof(JOBOBJECT_EXTENDED_LIMIT_INFORMATION));
IntPtr extendedInfoPtr = Marshal.AllocHGlobal(length);
Marshal.StructureToPtr(extendedInfo, extendedInfoPtr, false);
if (!SetInformationJobObject(handle, JobObjectInfoType.ExtendedLimitInformation, extendedInfoPtr, (uint)length))
throw new Exception(string.Format("Unable to set information. Error: {0}", Marshal.GetLastWin32Error()));
}
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
private void Dispose(bool disposing)
{
if (disposed)
return;
if (disposing) { }
Close();
disposed = true;
}
public void Close()
{
CloseHandle(handle);
handle = IntPtr.Zero;
}
public bool AddProcess(IntPtr processHandle)
{
return AssignProcessToJobObject(handle, processHandle);
}
public bool AddProcess(int processId)
{
return AddProcess(Process.GetProcessById(processId).Handle);
}
}
#region Helper classes
[StructLayout(LayoutKind.Sequential)]
struct IO_COUNTERS
{
public UInt64 ReadOperationCount;
public UInt64 WriteOperationCount;
public UInt64 OtherOperationCount;
public UInt64 ReadTransferCount;
public UInt64 WriteTransferCount;
public UInt64 OtherTransferCount;
}
[StructLayout(LayoutKind.Sequential)]
struct JOBOBJECT_BASIC_LIMIT_INFORMATION
{
public Int64 PerProcessUserTimeLimit;
public Int64 PerJobUserTimeLimit;
public UInt32 LimitFlags;
public UIntPtr MinimumWorkingSetSize;
public UIntPtr MaximumWorkingSetSize;
public UInt32 ActiveProcessLimit;
public UIntPtr Affinity;
public UInt32 PriorityClass;
public UInt32 SchedulingClass;
}
[StructLayout(LayoutKind.Sequential)]
public struct SECURITY_ATTRIBUTES
{
public UInt32 nLength;
public IntPtr lpSecurityDescriptor;
public Int32 bInheritHandle;
}
[StructLayout(LayoutKind.Sequential)]
struct JOBOBJECT_EXTENDED_LIMIT_INFORMATION
{
public JOBOBJECT_BASIC_LIMIT_INFORMATION BasicLimitInformation;
public IO_COUNTERS IoInfo;
public UIntPtr ProcessMemoryLimit;
public UIntPtr JobMemoryLimit;
public UIntPtr PeakProcessMemoryUsed;
public UIntPtr PeakJobMemoryUsed;
}
public enum JobObjectInfoType
{
AssociateCompletionPortInformation = 7,
BasicLimitInformation = 2,
BasicUIRestrictions = 4,
EndOfJobTimeInformation = 6,
ExtendedLimitInformation = 9,
SecurityLimitInformation = 5,
GroupInformation = 11
}
#endregion
}
pour résumer, les signatures posées par Alexandre Yezutov travaillent à la fois sous x86 et x64. Les signatures Matt Howells utilisent un certain nombre de UInt32 alors Qu'UIntPtr devrait être utilisé à la place. J'ai utilisé la signature suivante de P/Invoke pour le CloseHandle qui semble fonctionner très bien:
[DllImport("kernel32.dll", SetLastError = true)]
static extern bool CloseHandle(IntPtr hObject);
la mention suivante doit être ajoutée à l'application.manifeste affiché par Mas:
<compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
<application>
<!-- A list of all Windows versions that this application is designed to work with. Windows will automatically select the most compatible environment.-->
<!--The ID below indicates application support for Windows Vista -->
<supportedOS Id="{e2011457-1546-43c5-a5fe-008deee3d3f0}"/>
<!--The ID below indicates application support for Windows 7 -->
<supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}"/>
</application>
et enfin, cela ne fonctionnera pas (au moins sous Win 7) lorsqu'il est lancé à partir de Visual Studio. Le processus parent doit être démarré à partir de Windows Explorer.
Il y a un post qui utilise des api que vous essayez d'utiliser. Peut-être que vous pouvez obtenir un aperçu de n'.
amélioration par rapport à la réponse D'Alexander, voici une version qui utilise un SafeHandle
. Il s'agit d'un CriticalFinalizerObject
qui rend le travail avec les poignées beaucoup plus sûr. Les API. net (comme la classe Process
) utilisent toujours SafeHandle
s avec P/Invoke au lieu de IntPtr
s.
internal sealed class ChildProcessManager : IDisposable
{
private SafeJobHandle _handle;
private bool _disposed;
public ChildProcessManager()
{
_handle = new SafeJobHandle(CreateJobObject(IntPtr.Zero, null));
var info = new JOBOBJECT_BASIC_LIMIT_INFORMATION
{
LimitFlags = 0x2000
};
var extendedInfo = new JOBOBJECT_EXTENDED_LIMIT_INFORMATION
{
BasicLimitInformation = info
};
var length = Marshal.SizeOf(typeof(JOBOBJECT_EXTENDED_LIMIT_INFORMATION));
var extendedInfoPtr = Marshal.AllocHGlobal(length);
Marshal.StructureToPtr(extendedInfo, extendedInfoPtr, false);
if (!SetInformationJobObject(_handle, JobObjectInfoType.ExtendedLimitInformation, extendedInfoPtr,
(uint)length))
{
throw new InvalidOperationException($"Unable to set information. Error: {Marshal.GetLastWin32Error()}");
}
}
public void Dispose()
{
if (_disposed) return;
_handle.Dispose();
_handle = null;
_disposed = true;
}
private void ValidateDisposed()
{
if (_disposed) throw new ObjectDisposedException(nameof(ChildProcessManager));
}
public void AddProcess(SafeProcessHandle processHandle)
{
ValidateDisposed();
if (!AssignProcessToJobObject(_handle, processHandle))
{
throw new InvalidOperationException("Unable to add the process");
}
}
public void AddProcess(Process process)
{
AddProcess(process.SafeHandle);
}
public void AddProcess(int processId)
{
using (var process = Process.GetProcessById(processId))
{
AddProcess(process);
}
}
#region Safe Handle
// ReSharper disable once ClassNeverInstantiated.Local
private sealed class SafeJobHandle : SafeHandleZeroOrMinusOneIsInvalid
{
public SafeJobHandle(IntPtr handle) : base(true)
{
SetHandle(handle);
}
protected override bool ReleaseHandle()
{
return CloseHandle(handle);
}
[DllImport("kernel32", SetLastError = true)]
[ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)]
private static extern bool CloseHandle(IntPtr hObject);
}
#endregion
#region Win32
// ReSharper disable InconsistentNaming
[DllImport("kernel32", CharSet = CharSet.Unicode)]
private static extern IntPtr CreateJobObject(IntPtr a, string lpName);
[DllImport("kernel32")]
private static extern bool SetInformationJobObject(SafeJobHandle hJob, JobObjectInfoType infoType, IntPtr lpJobObjectInfo, uint cbJobObjectInfoLength);
[DllImport("kernel32", SetLastError = true)]
private static extern bool AssignProcessToJobObject(SafeJobHandle job, SafeProcessHandle process);
[StructLayout(LayoutKind.Sequential)]
internal struct IO_COUNTERS
{
public ulong ReadOperationCount;
public ulong WriteOperationCount;
public ulong OtherOperationCount;
public ulong ReadTransferCount;
public ulong WriteTransferCount;
public ulong OtherTransferCount;
}
[StructLayout(LayoutKind.Sequential)]
internal struct JOBOBJECT_BASIC_LIMIT_INFORMATION
{
public long PerProcessUserTimeLimit;
public long PerJobUserTimeLimit;
public uint LimitFlags;
public UIntPtr MinimumWorkingSetSize;
public UIntPtr MaximumWorkingSetSize;
public uint ActiveProcessLimit;
public UIntPtr Affinity;
public uint PriorityClass;
public uint SchedulingClass;
}
[StructLayout(LayoutKind.Sequential)]
public struct SECURITY_ATTRIBUTES
{
public uint nLength;
public IntPtr lpSecurityDescriptor;
public int bInheritHandle;
}
[StructLayout(LayoutKind.Sequential)]
internal struct JOBOBJECT_EXTENDED_LIMIT_INFORMATION
{
public JOBOBJECT_BASIC_LIMIT_INFORMATION BasicLimitInformation;
public IO_COUNTERS IoInfo;
public UIntPtr ProcessMemoryLimit;
public UIntPtr JobMemoryLimit;
public UIntPtr PeakProcessMemoryUsed;
public UIntPtr PeakJobMemoryUsed;
}
public enum JobObjectInfoType
{
AssociateCompletionPortInformation = 7,
BasicLimitInformation = 2,
BasicUIRestrictions = 4,
EndOfJobTimeInformation = 6,
ExtendedLimitInformation = 9,
SecurityLimitInformation = 5,
GroupInformation = 11
}
// ReSharper restore InconsistentNaming
#endregion
}