如何在Windows中自动销毁子进程？

在C++ Windows应用程序中,我启动了几个长时间运行的子进程(目前我使用CreateProcess(...)来执行此操作.

如果我的主进程崩溃或关闭,我希望子进程自动关闭.

由于要求这需要对"父"的崩溃起作用,我认为这需要使用操作系统的某些API /功能来完成.这样就可以清理所有"子"进程.

我该怎么做呢？

Windows API支持名为"作业对象"的对象.以下代码将创建一个"作业",配置为在主应用程序结束时(清除其句柄时)关闭所有进程.此代码只能运行一次:

HANDLE ghJob = CreateJobObject( NULL, NULL); // GLOBAL
if( ghJob == NULL)
{
    ::MessageBox( 0, "Could not create job object", "TEST", MB_OK);
}
else
{
    JOBOBJECT_EXTENDED_LIMIT_INFORMATION jeli = { 0 };

    // Configure all child processes associated with the job to terminate when the
    jeli.BasicLimitInformation.LimitFlags = JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE;
    if( 0 == SetInformationJobObject( ghJob, JobObjectExtendedLimitInformation, &jeli, sizeof(jeli)))
    {
        ::MessageBox( 0, "Could not SetInformationJobObject", "TEST", MB_OK);
    }
}

STARTUPINFO info={sizeof(info)};
PROCESS_INFORMATION processInfo;

// Launch child process - example is notepad.exe
if (::CreateProcess( NULL, "notepad.exe", NULL, NULL, TRUE, 0, NULL, NULL, &info, &processInfo))
{
    ::MessageBox( 0, "CreateProcess succeeded.", "TEST", MB_OK);
    if(ghJob)
    {
        if(0 == AssignProcessToJobObject( ghJob, processInfo.hProcess))
        {
            ::MessageBox( 0, "Could not AssignProcessToObject", "TEST", MB_OK);
        }
    }

    // Can we free handles now? Not sure about this.
    //CloseHandle(processInfo.hProcess); 
    CloseHandle(processInfo.hThread);
}