Update 更新文档

2026-02-25 23:01:42 +08:00
parent 40aff32fb0
commit 80518309a7
679 changed files with 4611263 additions and 0 deletions
--- a/cleaned_source_code/data_processing/DataBuffer.h
+++ b/cleaned_source_code/data_processing/DataBuffer.h
@@ -0,0 +1,75 @@
+#ifndef DATA_BUFFER_H
+#define DATA_BUFFER_H
+#include <QObject>
+#include <QQueue>
+#include <QMutex>
+#include <QWaitCondition>
+#include <QTimer>
+#include <QElapsedTimer>
+#include <QMap>
+#include <QSet>
+#include "../common_structures/TradingStructures.h"
+struct FlowStatistics {
+    qint64 totalPackets = 0;
+    qint64 droppedPackets = 0;
+    qint64 processedPackets = 0;
+    double packetsPerSecond = 0.0;
+    double dropRate = 0.0;
+    QDateTime lastUpdate;
+    void updateStats(qint64 total, qint64 dropped, qint64 processed) {
+        totalPackets = total;
+        droppedPackets = dropped;
+        processedPackets = processed;
+        dropRate = total > 0 ? static_cast<double>(dropped) / total : 0.0;
+        lastUpdate = QDateTime::currentDateTime();
+    }
+};
+class DataBuffer : public QObject
+{
+    Q_OBJECT
+public:
+    static DataBuffer* instance();
+    void setBufferSize(int maxSize);
+    void setFlowControlEnabled(bool enabled);
+    void setMaxPacketsPerSecond(int maxRate);
+    bool enqueue(const Trading::DataPacket& packet);
+    bool enqueueHighPriority(const Trading::DataPacket& packet);
+    Trading::DataPacket dequeue(int timeoutMs = 1000);
+    QList<Trading::DataPacket> dequeueBatch(int maxCount, int timeoutMs = 1000);
+    bool isEmpty() const;
+    int size() const;
+    int getQueueSize(Trading::DataPacketType type) const;
+    FlowStatistics getStatistics() const;
+    void pause();
+    void resume();
+    bool isPaused() const;
+    void clear();
+    void clearByType(Trading::DataPacketType type);
+    void clearByStock(const QString& stockCode);
+signals:
+    void bufferOverflow(const QString& stockCode, Trading::DataPacketType type);
+    void flowControlActivated(bool activated);
+    void statisticsUpdated(const FlowStatistics& stats);
+    void packetDropped(const Trading::DataPacket& packet, const QString& reason);
+private:
+    explicit DataBuffer(QObject *parent = nullptr);
+    ~DataBuffer();
+    void updateStatistics();
+    bool shouldDropPacket(const Trading::DataPacket& packet) const;
+    void cleanupExpiredPackets();
+    QQueue<Trading::DataPacket> m_buffer;
+    QQueue<Trading::DataPacket> m_highPriorityBuffer;
+    mutable QMutex m_mutex;
+    QWaitCondition m_notEmpty;
+    QWaitCondition m_notFull;
+    int m_maxBufferSize = 10000;
+    int m_maxPacketsPerSecond = 1000;
+    bool m_flowControlEnabled = true;
+    bool m_paused = false;
+    FlowStatistics m_stats;
+    QElapsedTimer m_rateTimer;
+    qint64 m_currentSecondPackets = 0;
+    QTimer* m_cleanupTimer;
+    QTimer* m_statsUpdateTimer;
+};
+#endif