Method acquire

src/common/image/image_reader.cpp:223–250

}

bytes ImageMemoryPool::acquire(size_t size) {
    if (size == 0) {
        return bytes();
    }

    const size_t bucket_size = bucket_size_for_image(size);

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

    auto it = free_lists_.find(bucket_size);
    if (it != free_lists_.end() && !it->second.empty()) {
        bytes block = std::move(it->second.back());
        it->second.pop_back();
        memset(block.data(), 0, block.size());
        return block;
    }

    for (auto candidate = free_lists_.begin(); candidate != free_lists_.end(); ++candidate) {
        if (candidate->first >= bucket_size && !candidate->second.empty()) {
            bytes block = std::move(candidate->second.back());
            candidate->second.pop_back();
            memset(block.data(), 0, block.size());
            return block;
        }
    }

    return bytes(bucket_size);
}

void ImageMemoryPool::recycle(bytes&& block) {
    const size_t size = block.size();