CBaseFilter::m_pLock member

Pointer to a critical section that is used to serialize state changes.


CCritSec *m_pLock;


This variable is initialized in the class constructor; see CBaseFilter::CBaseFilter.

Hold this critical section during state transitions, or when a method accesses the state over several operations. The base class holds the critical section in the following methods:

Do not hold this critical section during streaming operations (that is, when delivering samples to a downstream filter). Serialize streaming operations using a different critical section. Otherwise, it can cause deadlock.


Amfilter.h (include Streams.h)
Strmbase.lib (retail builds);
Strmbasd.lib (debug builds)

See also

CBaseFilter Class

Threads and Critical Sections