Merge "Add empty, dump methods to BlockingQueue" into main

#pragma once

#include <input/PrintTools.h>

#include <condition_variable>

#include <functional>

#include <list>

     * Primary used for debugging.

     * Does not block.

     */

    size_t size() {

    size_t size() const {

        std::scoped_lock lock(mLock);

        return mQueue.size();

    }

    bool empty() const {

        std::scoped_lock lock(mLock);

        return mQueue.empty();

    }

    std::string dump(std::string (*toString)(const T&) = constToString) const {

        std::scoped_lock lock(mLock);

        return dumpContainer(mQueue, toString);

    }

private:

    const std::optional<size_t> mCapacity;

    /**

    /**

     * Lock for accessing and waiting on elements.

     */

    std::mutex mLock;

    mutable std::mutex mLock;

    std::list<T> mQueue GUARDED_BY(mLock);

};