Exemplos de cursorInUseStatus em C++ (Cpp)

Exemplo n.º 1

Arquivo: cluster_cursor_manager.cpp Projeto: salmgazer/mongo

StatusWith<std::unique_ptr<ClusterClientCursor>> ClusterCursorManager::detachCursor_inlock(
    const NamespaceString& nss, CursorId cursorId) {
    CursorEntry* entry = getEntry_inlock(nss, cursorId);
    if (!entry) {
        return cursorNotFoundStatus(nss, cursorId);
    }

    std::unique_ptr<ClusterClientCursor> cursor = entry->releaseCursor();
    if (!cursor) {
        return cursorInUseStatus(nss, cursorId);
    }

    auto nsToContainerIt = _namespaceToContainerMap.find(nss);
    invariant(nsToContainerIt != _namespaceToContainerMap.end());
    CursorEntryMap& entryMap = nsToContainerIt->second.entryMap;
    size_t eraseResult = entryMap.erase(cursorId);
    invariant(1 == eraseResult);
    if (entryMap.empty()) {
        // This was the last cursor remaining in the given namespace.  Erase all state associated
        // with this namespace.
        size_t numDeleted =
            _cursorIdPrefixToNamespaceMap.erase(nsToContainerIt->second.containerPrefix);
        invariant(numDeleted == 1);
        _namespaceToContainerMap.erase(nsToContainerIt);
        invariant(_namespaceToContainerMap.size() == _cursorIdPrefixToNamespaceMap.size());
    }

    return std::move(cursor);
}

Exemplo n.º 2

Arquivo: cluster_cursor_manager.cpp Projeto: Asamaha/mongo

StatusWith<ClusterCursorManager::PinnedCursor> ClusterCursorManager::checkOutCursor(
    const NamespaceString& nss, CursorId cursorId) {
    // Read the clock out of the lock.
    const auto now = _clockSource->now();

    stdx::lock_guard<stdx::mutex> lk(_mutex);

    if (_inShutdown) {
        return Status(ErrorCodes::ShutdownInProgress,
                      "Cannot check out cursor as we are in the process of shutting down");
    }

    CursorEntry* entry = getEntry_inlock(nss, cursorId);
    if (!entry) {
        return cursorNotFoundStatus(nss, cursorId);
    }
    if (entry->getKillPending()) {
        return cursorNotFoundStatus(nss, cursorId);
    }
    std::unique_ptr<ClusterClientCursor> cursor = entry->releaseCursor();
    if (!cursor) {
        return cursorInUseStatus(nss, cursorId);
    }

    entry->setLastActive(now);

    // Note that pinning a cursor transfers ownership of the underlying ClusterClientCursor object
    // to the pin; the CursorEntry is left with a null ClusterClientCursor.
    return PinnedCursor(this, std::move(cursor), nss, cursorId);
}

Exemplo n.º 3

Arquivo: cluster_cursor_manager.cpp Projeto: salmgazer/mongo

StatusWith<ClusterCursorManager::PinnedCursor> ClusterCursorManager::checkOutCursor(
    const NamespaceString& nss, CursorId cursorId) {
    stdx::lock_guard<stdx::mutex> lk(_mutex);

    CursorEntry* entry = getEntry_inlock(nss, cursorId);
    if (!entry) {
        return cursorNotFoundStatus(nss, cursorId);
    }
    if (entry->getKillPending()) {
        return cursorNotFoundStatus(nss, cursorId);
    }
    std::unique_ptr<ClusterClientCursor> cursor = entry->releaseCursor();
    if (!cursor) {
        return cursorInUseStatus(nss, cursorId);
    }

    entry->setLastActive(_clockSource->now());

    // Note that pinning a cursor transfers ownership of the underlying ClusterClientCursor object
    // to the pin; the CursorEntry is left with a null ClusterClientCursor.
    return PinnedCursor(this, std::move(cursor), nss, cursorId);
}