如何安全地杀死从内核? [英] How to kill slave kernel securely?

问题描述

LinkClose[link]不一定在另一端终止程序 文档中所说的连接的连接".是否有一种方法可以杀死该连接 从内核的安全过程?

LinkClose[link] "does not necessarily terminate the program at the other end of the connection" as it is said in the Documentation. Is there a way to kill the process of the slave kernel securely?

实际上，我需要 Mathematica 中的一个函数，该函数仅在从属内核的进程已终止并且其内存已释放时才返回.从属内核退出时，LinkInterrupt[link, 1]和LinkClose[link]都不等待.目前，唯一的此类功能似乎是我在本页答案之一中显示的killProc[procID]功能.但是有内置的模拟吗?

In really I need a function in Mathematica that returns only when the process of the slave kernel has already killed and its memory has already released. Both LinkInterrupt[link, 1] and LinkClose[link] do not wait while the slave kernel exits. At this moment the only such function is seemed to be killProc[procID] function I had showed in one of answers at this page. But is there a built-in analog?

推荐答案

目前，我只知道一种安全地杀死MathKernel进程的方法.此方法使用NETLink，并且似乎仅在Windows下有效，并且需要安装Microsoft .NET 2或更高版本.

At this moment I know only one method to kill the MathKernel process securely. This method uses NETLink and seems to work only under Windows and requires Microsoft .NET 2 or later to be installed.

killProc[processID_] := If[$OperatingSystem === "Windows",
   Needs["NETLink`"];
   Symbol["LoadNETType"]["System.Diagnostics.Process"];
   With[{procID = processID},
    killProc[procID_] := (
       proc = Process`GetProcessById[procID];
       proc@Kill[]
       );
    ];
   killProc[processID]
   ];
(*Killing the current MathKernel process*)
killProc[$ProcessID]

任何建议或改进将不胜感激.

Any suggestions or improvements will be appreciated.

更正确的方法:

Needs["NETLink`"];
LoadNETType["System.Diagnostics.Process"];

$kern = LinkLaunch[First[$CommandLine] <> " -mathlink -noinit"];
LinkRead[$kern];
LinkWrite[$kern, Unevaluated[$ProcessID]];
$kernProcessID = First@LinkRead[$kern];
$kernProcess = Process`GetProcessById[$kernProcessID];

AbortProtect[If[! ($kernProcess@Refresh[]; $kernProcess@HasExited),
  $kernProcess@Kill[]; $kernProcess@WaitForExit[];
  $kernProcess@Close[]];
 LinkClose[$kern]]

更正确的方法:

Edit 2:

Even more correct method:

Needs["NETLink`"];
LoadNETType["System.Diagnostics.Process"];

$kern = LinkLaunch[First[$CommandLine] <> " -mathlink -noinit"];
LinkRead[$kern];
LinkWrite[$kern, Unevaluated[$ProcessID]];
$kernProcessID = First@LinkRead[$kern];
$kernProcess = Process`GetProcessById[$kernProcessID];

krnKill := AbortProtect[
   If[TrueQ[MemberQ[Links[], $kern]], LinkClose[$kern]];
   If[TrueQ[MemberQ[LoadedNETObjects[], $kernProcess]],
    If[! TrueQ[$kernProcess@WaitForExit[100]],
     Quiet@$kernProcess@Kill[]; $kernProcess@WaitForExit[]];
    $kernProcess@Close[]; ReleaseNETObject[$kernProcess];
    ]
   ];

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