added FIFO

container/SharedRingBuffer.h

@@ -1,6 +1,7 @@
 #ifndef FSFW_CONTAINER_SHAREDRINGBUFFER_H_
 #define FSFW_CONTAINER_SHAREDRINGBUFFER_H_
 
+#include <fsfw/container/DynamicFIFO.h>
 #include "SimpleRingBuffer.h"
 #include "../ipc/MutexIF.h"
 #include "../objectmanager/SystemObject.h"
@@ -26,6 +27,8 @@ public:
 	SharedRingBuffer(object_id_t objectId, const size_t size,
 			bool overwriteOld, size_t maxExcessBytes);
 
+	void setToUseReceiveSizeFIFO(uint32_t fifoDepth);
+
 	/**
 	 * This constructor takes an external buffer with the specified size.
 	 * @param buffer
@@ -59,8 +62,21 @@ public:
 	 * @return
 	 */
 	MutexIF* getMutexHandle() const;
+
+	ReturnValue_t initialize() override;
+
+	/**
+	 * If the shared ring buffer was configured to have a sizes FIFO, a handle
+	 * to that FIFO can be retrieved with this function.
+	 * Do not forget to protect access with a lock if required!
+	 * @return
+	 */
+	DynamicFIFO<size_t>* getReceiveSizesFIFO();
 private:
 	MutexIF* mutex = nullptr;
+
+	size_t fifoDepth = 0;
+	DynamicFIFO<size_t>* receiveSizesFIFO = nullptr;
 };