Added TTL based LRU memory cache.

2018-10-26 23:30:27 +01:00
parent 52a70e7931
commit 43428a27aa
6 changed files with 131 additions and 12 deletions
--- a/arduino/memory.h
+++ b/arduino/memory.h
@@ -54,4 +54,24 @@ class Memory {
    bool test();
 };

+struct MemoryCacheItem_t {
+  uint16_t addr;
+  uint8_t data;
+  uint8_t ttl;
+  bool valid;
+};
+typedef struct MemoryCacheItem_t MemoryCacheItem;
+
+class MemoryCache {
+    MemoryCacheItem *cache = NULL;
+    Memory *memory = NULL;
+    uint8_t cacheElements = 0;
+  public:
+    MemoryCache(uint8_t cacheElements, Memory& memory);
+    uint8_t getSize();
+    MemoryCacheItem* getItem(uint8_t index);
+    uint8_t read(uint16_t addr);
+    void update(uint16_t addr, uint8_t data);
+};
+
 #endif //UVM_MEMORY_H