Moved RingBuffer to core

core-buffer/include/RingBuffer.hpp

@@ -0,0 +1,81 @@
+#ifndef RINGBUFFER_H
+#define RINGBUFFER_H
+
+#include <list>
+#include <vector>
+#include <map>
+#include <mutex>
+#include <atomic>
+#include <memory>
+#include <string>
+#include <boost/any.hpp>
+#include <chrono>
+#include "date.h"
+
+struct FrameMetadata
+{
+    // Ring buffer needed data.
+    size_t buffer_slot_index;
+    size_t frame_bytes_size;
+    
+    // Image header data.
+    uint64_t frame_index;
+    std::string endianness;
+    std::string type;
+    std::vector<size_t> frame_shape;
+
+    // Pass additional header values.
+    std::map<std::string, std::shared_ptr<char>> header_values;
+};
+
+struct UdpFrameMetadata
+{
+    // Ring buffer needed data.
+    size_t buffer_slot_index;
+    size_t frame_bytes_size;
+
+    uint64_t pulse_id;
+    uint64_t frame_index;
+    uint32_t daq_rec;
+    uint16_t n_recv_packets;
+};
+
+template <class T>
+class RingBuffer
+{
+    // Initialized in constructor.
+    size_t n_slots_ = 0;
+    std::vector<bool> ringbuffer_slots_;
+
+    // Set in initialize().
+    size_t slot_size_ = 0;
+    size_t buffer_size_ = 0;
+    char* frame_data_buffer_ = NULL;
+    size_t write_index_ = 0;
+    size_t buffer_used_slots_ = 0;
+    std::atomic_bool initialized_ = false;
+
+    std::list< std::shared_ptr<T> > frame_metadata_queue_;
+    std::mutex frame_metadata_queue_mutex_;
+    std::mutex ringbuffer_slots_mutex_;
+
+    char* get_buffer_slot_address(size_t buffer_slot_index);
+
+    public:
+        RingBuffer(size_t n_slots);
+
+        virtual ~RingBuffer();
+        void initialize(size_t slot_size);
+        
+        char* reserve(std::shared_ptr<T> metadata);
+        void commit(std::shared_ptr<T> metadata);
+        std::pair<std::shared_ptr<T>, char*> read();
+        void release(size_t buffer_slot_index);
+
+        bool is_empty();
+        bool is_initialized();
+        void clear();
+        size_t get_slot_size();
+};
+
+#endif