Question

This is a small part of my code:

CRITICAL_SECTION _cs;
InitializeCriticalSection(&_cs);

 void lock() {
    if (_initizalized){
      EnterCriticalSection(&_cs);
      EnterCriticalSection(&_cs);
      _locked = true;
    }
  }

(I wrote “EnterCriticalSection” twice , because I noticed that this line doesn’t work)
As I understand, this must cause a deadlock. but it doesn’t. why?

Answer 1

No the same thread can enter it as often as it wants.
CRITICAL_SECTION is used to restrict access between multiple different threads.