Method alloc

imperative/src/impl/event_pool.cpp:25–40

    return **sm_pool;
}
CompNode::Event* EventPool::alloc(CompNode cn) {
    CompNode::EventPool* pool;
    {
        MGB_LOCK_GUARD(m_lock);
        auto iter = m_cn2pool.find(cn);
        if (iter == m_cn2pool.end()) {
            iter = m_cn2pool
                           .emplace(
                                   std::piecewise_construct, std::forward_as_tuple(cn),
                                   std::forward_as_tuple(cn, m_flags))
                           .first;
        }
        pool = &iter->second;
    }
    return pool->alloc();
}
std::shared_ptr<CompNode::Event> EventPool::alloc_shared(CompNode cn) {
    auto* raw_event = alloc(cn);
    return {raw_event, [this](CompNode::Event* event) { this->free(event); }};