#include "log_queue.h"
#include <iostream>

log_queue::log_queue(): _working(true), _worker(&log_queue::worker_func, this)
{
}

log_queue::~log_queue()
{
    std::unique_lock<std::mutex> lock(_mutex);
    _queue.push([]{});
    _working = false;
    _cond.notify_one();
    lock.unlock();
    _worker.join();
}

void log_queue::worker_func()
{
    while(true)
    {
        std::unique_lock<std::mutex> lock(_mutex);
        _cond.wait(lock, [this] { return !_queue.empty(); });
        std::function<void()> func = _queue.front();
        _queue.pop();
        
        if(_queue.empty() && !_working)
            return;
        
        lock.unlock();
        
        func();
    }
}

void log_queue::add_log(const std::function<void()>& logFunc)
{
    std::lock_guard<std::mutex> lock(_mutex);
    _queue.push(logFunc);
    _cond.notify_one();
}