nf7/common/wait_queue.hh

51 lines
1011 B
C++

#include <condition_variable>
#include <deque>
#include <mutex>
#include "common/queue.hh"
namespace nf7 {
// Queue<T> with Wait() method
template <typename T>
class WaitQueue : private Queue<T> {
public:
WaitQueue() = default;
WaitQueue(const WaitQueue&) = default;
WaitQueue(WaitQueue&&) = default;
WaitQueue& operator=(const WaitQueue&) = default;
WaitQueue& operator=(WaitQueue&&) = default;
void Push(T&& task) noexcept {
Queue<T>::Push(std::move(task));
cv_.notify_all();
}
using Queue<T>::Pop;
void Notify() noexcept {
cv_.notify_all();
}
void Wait() noexcept {
std::unique_lock<std::mutex> k(mtx_);
cv_.wait(k);
}
void WaitFor(auto dur) noexcept {
std::unique_lock<std::mutex> k(mtx_);
cv_.wait_for(k, dur);
}
void WaitUntil(auto time) noexcept {
std::unique_lock<std::mutex> k(mtx_);
cv_.wait_until(k, time);
}
using Queue<T>::size;
private:
using Queue<T>::mtx_;
std::condition_variable cv_;
};
} // namespace nf7