Is it valid to nest a critical section?

Question

For example, would this be valid?

CRITICAL_SECTION cs;

::InitializeCriticalSection( &cs );

::EnterCriticalSection( &cs );      // First level
::Ent         


        

Answer 1

From the documentation:

After a thread has ownership of a critical section, it can make additional calls to EnterCriticalSection or TryEnterCriticalSection without blocking its execution. This prevents a thread from deadlocking itself while waiting for a critical section that it already owns. The thread enters the critical section each time EnterCriticalSection and TryEnterCriticalSection succeed. A thread must call LeaveCriticalSection once for each time that it entered the critical section.