Files
concurrency-in-action/source/listing_6.7.cpp
2018-10-18 00:40:34 -05:00

27 lines
667 B
C++

template <typename T>
class threadsafe_queue {
private:
struct node {
std::shared_ptr<T> data;
std::unique_ptr<node> next;
};
std::mutex head_mutex;
std::unique_ptr<node> head;
std::mutex tail_mutex;
node* tail;
std::condition_variable data_cond;
public:
threadsafe_queue() : head(new node), tail(head.get()) {}
threadsafe_queue(const threadsafe_queue& other) = delete;
threadsafe_queue& operator=(const threadsafe_queue& other) = delete;
std::shared_ptr<T> try_pop();
bool try_pop(T& value);
std::shared_ptr<T> wait_and_pop();
void wait_and_pop(T& value);
void push(T new_value);
void empty();
};