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CritCheckIn

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Microsoft DirectShow 9.0

CritCheckIn

Returns TRUE if the current thread is the owner of the specified critical section.

Syntax

  BOOL WINAPI CritCheckIn(
    CCritSec *pcCrit
);

Parameters

pcCrit

Pointer to a CCritSec critical section.

Return Value

In debug builds, returns TRUE if the current thread is the owner of this critical section, or FALSE otherwise. In retail builds, always returns TRUE.

Remarks

This function is especially useful within the ASSERT macro, to test whether a thread owns a given lock.

Example Code

The following code example shows how to use this function:

{
    CCritSec MyLock;  // Critical section is not locked yet.
    
    ASSERT(CritCheckIn(&MyLock)); // This assert will fire.

    // Lock the critical section.    
    CAutoLock cObjectLock(&MyLock);
     
    ASSERT(CritCheckIn(&MyLock)); // This assert will not fire.

} // Lock goes out of scope here.

Requirements

**  Header:** Declared in Wxutil.h; include Streams.h.

**  Library:** Use Strmbase.lib (retail builds) or Strmbasd.lib (debug builds).

See Also