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refs #460 CDataCache for dynamic (downloaded/generated) data with file-based distribution among processes.

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Mathew Sutcliffe
2015-09-13 02:08:51 +01:00
parent 56d8bf4651
commit 6601393df8
7 changed files with 296 additions and 2 deletions
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11
src/blackmisc/valuecache.h
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@@ -91,13 +91,22 @@ namespace BlackMisc
//! of CValueCache instances in all processes including this one. The slot will do its own round-trip detection.
void valuesChangedByLocal(const BlackMisc::CVariantMap &values);
protected:
//! Save specific values to Json files in a given directory.
CStatusMessage saveToFiles(const QString &directory, const CVariantMap &values) const;
//! Load from Json files in a given directory any values which differ from the current ones, and insert them in o_values.
CStatusMessage loadFromFiles(const QString &directory, CVariantMap &o_values) const;
//! Mutex protecting operations which are critical on m_elements.
mutable QMutex m_mutex { QMutex::Recursive };
private:
friend class Private::CValuePage;
struct Element;
using ElementPtr = QSharedPointer<Element>; // QMap doesn't support move-only types
QMap<QString, ElementPtr> m_elements;
mutable QMutex m_mutex { QMutex::Recursive };
Element &getElement(const QString &key);
Element &getElement(const QString &key, QMap<QString, ElementPtr>::const_iterator pos);