Method destroy

source/backend/cpu/ThreadPool.cpp:35–43

}

void ThreadPool::destroy() {
    std::lock_guard<std::mutex> _l(gInitMutex);
    for (auto i= gInstances.begin(); i != gInstances.end(); i++){
        if (i->second){
            delete i->second;
        }
    }
    gInstances.clear();
}

ThreadPool::ThreadPool(int numberThread) {
    mNumberThread = numberThread;