How do I clear the std::queue efficiently?

Question

I am using std::queue for implementing JobQueue class. ( Basically this class process each job in FIFO manner). In one scenario, I want to clear the queue in one shot( delet

Answer 1

Using a unique_ptr might be OK.
You then reset it to obtain an empty queue and release the memory of the first queue. As to the complexity? I'm not sure - but guess it's O(1).

Possible code:

typedef queue quint;

unique_ptr p(new quint);

// ...

p.reset(new quint);  // the old queue has been destroyed and you start afresh with an empty queue