r6:Function:queue enqueue

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int queue_enqueue( struct queue_state *qs, void *user_data );


struct queue_state *qs

A queue state as allocated by queue_new.

void *user_data

A void pointer of user data which will be queued into the queue.

Return Value

Returns 1 on a successful enqueue. Returns 0 if enqueing failed. Enqueuing only fails if the queue has exhausted its supply of freelist elements. In this case, the user can call queue_guaranteed_enqueue, which will allocate a new element and enqueue using that. Remember however that the queue can never shrink, so any such call will permanently increase the size of the queue by one element.


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