MS-641 Segment fault(signal 11) in PickToLoad

- MS-620 - Get table row counts display wrong error code

- MS-637 - out of memory when load too many tasks

- MS-640 - Cache object size calculate incorrect

- MS-641 - Segment fault(signal 11) in PickToLoad

## Improvement

- MS-552 - Add and change the easylogging library

std::vector<uint64_t>

TaskTable::PickToLoad(uint64_t limit) {

    std::lock_guard<std::mutex> lock(mutex_);

    size_t count = 0;

    for (int j = last_finish_ + 1; j < table_.size(); ++j) {

    for (uint64_t j = last_finish_ + 1; j < table_.size(); ++j) {

        if (not table_[j]) {

            SERVER_LOG_WARNING << "table[" << j << "] is nullptr";

        }

std::vector<uint64_t>

TaskTable::PickToExecute(uint64_t limit) {

    std::lock_guard<std::mutex> lock(mutex_);

    std::vector<uint64_t> indexes;

    bool cross = false;

    for (uint64_t i = last_finish_ + 1, count = 0; i < table_.size() && count < limit; ++i) {

void

TaskTable::Put(TaskPtr task) {

    std::lock_guard<std::mutex> lock(id_mutex_);

    std::lock_guard<std::mutex> lock(mutex_);

    auto item = std::make_shared<TaskTableItem>();

    item->id = id_++;

    item->task = std::move(task);

void

TaskTable::Put(std::vector<TaskPtr>& tasks) {

    std::lock_guard<std::mutex> lock(id_mutex_);

    std::lock_guard<std::mutex> lock(mutex_);

    for (auto& task : tasks) {

        auto item = std::make_shared<TaskTableItem>();

        item->id = id_++;

TaskTableItemPtr

TaskTable::Get(uint64_t index) {

    std::lock_guard<std::mutex> lock(mutex_);

    return table_[index];

}

    }

 public:

    TaskTableItemPtr& operator[](uint64_t index) {

        return table_[index];

    }

    std::deque<TaskTableItemPtr>::iterator

    begin() {

 private:

    std::uint64_t id_ = 0;

    mutable std::mutex id_mutex_;

    mutable std::mutex mutex_;

    std::deque<TaskTableItemPtr> table_;

    std::function<void(void)> subscriber_ = nullptr;