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// $Id$
#if 0
// Listing 1 code/ch12
int
HA_Device_Repository::update_device (int device_id)
{
this->mutex_.acquire ();
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("(%t) Updating device %d\n"),
device_id));
// Allocate a new object.
ACE_NEW_RETURN (object, Object, -1);
// ...
// Use the object
this->mutex_.release ();
}
// Listing 1
// Listing 2 code/ch12
int
HA_Device_Repository::update_device (int device_id)
{
// Construct a guard specifying the type of the mutex as
// a template parameter and passing in the mutex to hold
// as a parameter.
ACE_Guard<ACE_Thread_Mutex> guard (this->mutex_);
// This can throw an exception that is not caught here.
ACE_NEW_RETURN (object, Object, -1);
// ..
// Use the object.
// ..
// Guard is destroyed, automatically releasing the lock.
}
// Listing 2
// Listing 3 code/ch12
int
HA_Device_Repository::update_device (int device_id)
{
ACE_GUARD_RETURN (ACE_Thread_Mutex, mon, mutex_, -1);
ACE_NEW_RETURN (object, Object, -1);
// Use the object.
// ...
}
// Listing 3
#endif /* 0 */
int main (int, char *[])
{ return 0; }
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