45 lines
895 B
C++
45 lines
895 B
C++
#include <thread>
|
|
|
|
#include <mutex>
|
|
#include <future>
|
|
#include <atomic>
|
|
#include <condition_variable>
|
|
|
|
#include <memory>
|
|
|
|
#include <type_traits>
|
|
template <typename T>
|
|
struct QNode {
|
|
std::unique_ptr<T> payload;
|
|
volatile std::atomic<QNode*> next;
|
|
|
|
QNode() = default;
|
|
|
|
explicit QNode(T&& payload):
|
|
payload(std::forward<T>(payload)) {}
|
|
};
|
|
|
|
template <typename T>
|
|
class Queue {
|
|
private:
|
|
volatile std::atomic<QNode<T>*> head;
|
|
volatile std::atomic<QNode<T>*> tail;
|
|
public:
|
|
void push(T&& payload) {
|
|
QNode<T>* node = new QNode(std::forward<T>(payload));
|
|
node->next = node;
|
|
|
|
QNode<T>* _tail = tail;
|
|
QNode<T>* _next = _tail->next;
|
|
|
|
do {
|
|
node->next = _next;
|
|
} while (!_tail->next.compare_exchange_weak(_next, node));
|
|
|
|
tail.compare_exchange_strong(_tail, node);
|
|
}
|
|
std::unique_ptr<T> pop() {
|
|
|
|
}
|
|
};
|