Windows在不同的线程中处理CTRL+C ?

Here is a simple application that handled CTRL+C signal booth on linux and windows:

下面是一个简单的应用程序，可以在linux和windows上处理CTRL+C信号亭:

#include <QtCore/QCoreApplication>
#include <QDebug>
#include <QThread>

void SigIntHandler()
{
    qDebug()<<"SigInt ThreadID: "<<QThread::currentThreadId();
    qApp->quit();
}

#ifdef __linux__
#include <signal.h>

    void unix_handler(int s)
    {
        //svakako je SIGINT, ali da ne javlja warning da se s ne koristi
        if (s==SIGINT)
            SigIntHandler();
    }

#else
#include <windows.h>

    BOOL WINAPI WinHandler(DWORD CEvent)
    {
        switch(CEvent)
        {
        case CTRL_C_EVENT:
            SigIntHandler();
            break;
        }
        return TRUE;
    }

#endif

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);


    //kod za hvatanje CTRL+C - unix i windows
    #ifdef __linux__
        signal(SIGINT, &unix_handler);
    #else
        SetConsoleCtrlHandler((PHANDLER_ROUTINE)WinHandler, TRUE);
    #endif

    qDebug()<<"Main ThreadID: "<<QThread::currentThreadId();
    return a.exec();
}

After compiling and running it on linux (Debian Squeeze), I get following output:

在linux (Debian Squeeze)上编译并运行后，得到如下输出:

/Test-build-desktop$ ./Test 
Main ThreadID:  140105475446560 
^CSigInt ThreadID:  140105475446560 

/Test-build-desktop$ ./Test 
Main ThreadID:  140369579480864 
^CSigInt ThreadID:  140369579480864 

/Test-build-desktop$ ./Test 
Main ThreadID:  140571925509920 
^CSigInt ThreadID:  140571925509920

And that's what I've expected (SigIntHandler method runs on main thread). But when I compile and execute same code on Windows 7, I get this:

这就是我所期望的(SigIntHandler方法在主线程上运行)。但是当我在Windows 7上编译并执行相同的代码时，我得到了:

d:\Test-build-desktop\debug>Test.exe
Main ThreadID:  0x5a8
SigInt ThreadID:  0x768

d:\Test-build-desktop\debug>Test.exe
Main ThreadID:  0x588
SigInt ThreadID:  0x1434

d:\Test-build-desktop\debug>Test.exe
Main ThreadID:  0x1170
SigInt ThreadID:  0xc38

As you can see, here SigIntHandler method is executed in different thread then main ... And that creates me many problems. So my question is - is it possible to force SigIntHandler to run in main thread on windows ? Am I maybe catching siging wrong ?

如您所见，SigIntHandler方法在不同的线程中执行，然后是main…这给我带来了很多问题。我的问题是，是否有可能强制SigIntHandler在windows的主线程中运行?我是不是记错了?

Thanks !!

谢谢! !

2 个解决方案

#1

From MSDN topic HandlerRoutine:

从MSDN HandlerRoutine话题:

A HandlerRoutine function is an application-defined function used with the SetConsoleCtrlHandler function. A console process uses this function to handle control signals received by the process. When the signal is received, the system creates a new thread in the process to execute the function.

HandlerRoutine函数是一个应用程序定义的函数，用于setcomfort ectrlhandler函数。控制台进程使用此函数来处理进程接收的控制信号。当接收到信号时，系统在进程中创建一个新线程来执行函数。

So, the answer is: this is impossible.

所以，答案是:这是不可能的。

#2

Read the following link for an interesting take on this: http://blogs.msdn.com/b/oldnewthing/archive/2008/07/28/8781423.aspx

请阅读下面的链接以获得有趣的体验:http://blogs.msdn.com/b/oldnewthing/archive/2008/07/28/8781423.aspx

#1