mutex locking

If I use mutex blocking like this

Code:

---

pthread_mutex_lock (&send_mutex);
try
{
  Send( pBuffer, ulMsgSize );
}
catch(...)
{
 pthread_mutex_unlock (&send_mutex);
 throw;
}
pthread_mutex_unlock (&send_mutex);

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will the mutex be unblocked if the thread terminates inside the Send function?

I know with semaphores you can use the SEM_UNDO flag for that purpose, but how can you do it with mutexes?

Based on what is says here, I'm going to guess the lock isn't released until you explicitly do so.

Quote:

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An equal number of pthread_mutex_unlock operations must be performed before the mutex returns to the unlocked state.

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Why not write a small program and test your theories.

Quote:

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mutex blocking

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what's that? never heard of it

See mutex