with shared memory

rktwebview_qt/shmqueue.h

@@ -0,0 +1,51 @@
+#ifndef SHMQUEUE_H
+#define SHMQUEUE_H
+
+#include "shm.h"
+#include <QString>
+
+#define COMMAND_SLOT 1
+#define EVENT_SLOT   2
+
+typedef struct __ShmQueueItem__
+{
+    int      cmd;
+    ShmPlace data_place;
+    ShmPlace next;
+    ShmPlace prev;
+} ShmQueueItem;
+
+typedef struct __ShmQueue_
+{
+    ShmPlace first;
+    ShmPlace last;
+    int      count;
+} ShmQueueStart;
+
+
+class ShmQueue
+{
+private:
+    Shm *_shm;
+
+private:
+    ShmQueueStart *_queue;
+    ShmSem   *_queue_sem;
+    bool      _owner;
+
+private:
+    void cleanup();
+
+public:
+    int depth();
+
+public:
+    bool dequeue(int &cmd, QString &json_data, bool wait = false);
+    void enqueue(int cmd, const QString &json_data);
+
+public:
+    ShmQueue(Shm *shm, ShmSlot slot, bool owner);
+    ~ShmQueue();
+};
+
+#endif // SHMQUEUE_H