// When changing existing watchpoint, VS creates a new watchpoint and deletes the
// previous one. But LLDB doesn't create a new watchpoint if it points to the same
// address. This may result in several DebugWatchpoint objects holding the same
// watchpoint, and if one of the instances deletes it all the related DebugWatchpoint
// become invalid. So we need to keep tracking of who actually using the watchpoint
// by calling RegisterWatchpoint / UnregisterWatchpoint methods.
public int Delete()
{
if (_deleted)
{
return(VSConstants.S_OK);
}
_deleted = true;
_breakpointManager.UnregisterWatchpoint(Self);
if (_lldbWatchpoint != null && _breakpointManager.GetWatchpointRefCount(Self) == 0)
{
_target.DeleteWatchpoint(_lldbWatchpoint.GetId());
}
return(VSConstants.S_OK);
}