C++ 如何杀死或终止一个 boost 线程
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How to kill or Terminate a boost Thread
提问by Mustansar Fiaz
I want to terminate or kill boost thread. code is here:
我想终止或杀死 boost 线程。代码在这里：
DWORD WINAPI StartFaceDetector(LPVOID temp)
{
int j=0;
char **argv1;
QApplication a(j,argv1);//add some thread here
gui::VisualControl w;
t=&w;
boost::thread u(&faceThread);
w.show();
a.exec();
// I Want to close u thread here.
return 0;
}
I want to close that boost thread before return of function. Thanks in Advance.
我想在函数返回之前关闭那个 boost 线程。提前致谢。
回答by Dave McMordie
On Windows:
在 Windows 上：
TerminateThread(u.native_handle(), 0);
On Linux / QNX / UNIX / any platform with pthread support:
在 Linux / QNX / UNIX / 任何支持 pthread 的平台上：
pthread_cancel(u.native_handle());
or
或者
pthread_kill(u.native_handle(), 9);
Note that boost authors intentionally left this out as the behaviour is platform-dependent and not well defined. However, you're not the only one to ever reach for this functionality...
请注意，boost 作者故意忽略了这一点，因为该行为是平台相关的并且没有明确定义。但是，您并不是唯一一个使用此功能的人......
回答by herohuyongtao
Use interrupt(). Also, you should define interruption points. Thread will be interrupted after calling interrupt()as soon as it reaches one of interruption points.
使用interrupt(). 此外，您应该定义中断点。线程在调用后interrupt()一到达中断点之一就会被中断。
u.interrupt();
更多信息：
Calling
interrupt()just sets a flag in the thread management structure for that thread and returns: it doesn't wait for the thread to actually be interrupted. This is important, because a thread can only be interrupted at one of the predefined interruption points, and it might be that a thread never executes an interruption point, so never sees the request. Currently, the interruption points are:
boost::thread::join()boost::thread::timed_join()boost::condition_variable::wait()boost::condition_variable::timed_wait()boost::condition_variable_any::wait()boost::condition_variable_any::timed_wait()boost::this_thread::sleep()boost::this_thread::interruption_point()
调用
interrupt()只是在线程管理结构中为该线程设置一个标志并返回：它不会等待线程实际被中断。这很重要，因为一个线程只能在预定义的中断点之一被中断，并且可能一个线程永远不会执行中断点，所以永远不会看到请求。目前，中断点是：
boost::thread::join()boost::thread::timed_join()boost::condition_variable::wait()boost::condition_variable::timed_wait()boost::condition_variable_any::wait()boost::condition_variable_any::timed_wait()boost::this_thread::sleep()boost::this_thread::interruption_point()
