I am creating a thread using _beginthreadex function. The function address I am passing in it has an infinite while loop (while(1)) . I have the threadid and threadhandle.
I can use TerminateThread(threadhandle,1); But it is dangerous.
The safe way is to kill thread using _endthreadex but it can only be used from inside the thread, and I wanted to kill the thread from outside.
So please suggest if there is a safe way to close,end or kill the thread safely from outside using threadid or threadhandle.
You should - literally - never use TerminateThread(). And I'm not even joking. If you are terminating a thread from the outside, all resources reserved in it will be leaked, all state variables accessed inside will have an undetermined state and so on.
The solution for your problem might be signaling your thread to finish itself. It can be done by a volatile variable changed by thread-safe means (see InterlockedIncrement() on that), a Windows event, or something like that. If your thread has a message loop you can even do it by sending a message to ask it to stop.