Method checkpoint

src/storage/disk_array.cpp:228–239

}

void DiskArrayInternal::checkpoint() {
    if (pipUpdates.updatedLastPIP.has_value()) {
        ShadowUtils::updatePage(fileHandle, pipUpdates.updatedLastPIP->pipPageIdx, true,
            *shadowFile, [&](auto* frame) {
                memcpy(frame, &pipUpdates.updatedLastPIP->pipContents, sizeof(PIP));
            });
    }
    for (auto& newPIP : pipUpdates.newPIPs) {
        ShadowUtils::updatePage(fileHandle, newPIP.pipPageIdx, true, *shadowFile,
            [&](auto* frame) { memcpy(frame, &newPIP.pipContents, sizeof(PIP)); });
    }
}

void DiskArrayInternal::reclaimStorage(PageAllocator& pageAllocator) const {
    for (auto& pip : pips) {