inline bool peek(value_type& ret_val) {
bool success = false;
lock.lock();
if(!_empty) {
success = true;
ret_val = value;
}
lock.unlock();
return success;
} // end of peek
inline bool test_and_get(value_type& ret_val) {
bool success = false;
lock.lock();
if(!_empty) {
success = true;
ret_val = value;
_empty = true;
}
lock.unlock();
return success;
} // end of test_and_get
/** returns true if set for the first time */
inline bool set(const value_type& other,
value_type& new_value,
atomic<size_t>& joincounter) {
bool first_set = false;
lock.lock();
if(!_empty) value += other;
else { value = other; first_set = true; }
new_value = value;
_empty = false;
lock.unlock();
return first_set;
}
/** Add an edge to the ingress object using oblivious greedy assignment. */
void add_edge(vertex_id_type source, vertex_id_type target,
const EdgeData& edata) {
obliv_lock.lock();
dht[source]; dht[target];
const procid_t owning_proc =
base_type::edge_decision.edge_to_proc_greedy(source, target, dht[source], dht[target], proc_num_edges, usehash, userecent);
obliv_lock.unlock();
typedef typename base_type::edge_buffer_record edge_buffer_record;
edge_buffer_record record(source, target, edata);
#ifdef _OPENMP
base_type::edge_exchange.send(owning_proc, record, omp_get_thread_num());
#else
base_type::edge_exchange.send(owning_proc, record);
#endif
} // end of add edge
