The critical section object provides intraprocess synchronization. The current implementation uses the Microsoft® Win32® application programming interfaces (APIs) that use the CRITICAL_SECTION type.
The safest way to use CCritSec objects is to lock them with a CAutoLock object that guarantees to unlock the object when it goes out of scope and compiles to efficient inline code.
Member Functions
CCritSec Constructs a CCritSec object. Lock Locks the critical section object. Unlock Unlocks the critical section object.
Constructs a CCritSec object.
Syntax
CCritSec(void);
Return Value
No return value.
Remarks
Calls the Microsoft® Win32® InitializeCriticalSection function to set the private critical section member variable. The destructor calls the Win32 DeleteCriticalSection function.
Locks the critical section object.
Syntax
void Lock(void);
Return Value
No return value.
Remarks
This member function locks the critical section object. You can make multiple lock calls on the same thread, but the CCritSec::Unlock member function must be called a corresponding number of times before the object is unlocked. If the object is locked by another thread, the CCritSec::Lock member function blocks until either the object is released or a "possible deadlock" exception occurs.
Releases the lock on the object acquired by calling the CCritSec::Lock member function.
Syntax
void Unlock(void);
Return Value
No return value.
Remarks
You must call the CCritSec::Unlock member function once for each call to Lock.
Top of Page
© 2000 Microsoft and/or its suppliers. All rights reserved. Terms of Use.