Tangible serialization and design improvements

luprex/core/cpp/idalloc.hpp

@@ -128,22 +128,32 @@ public:
 class IdPlayerPool {
 private:
     IdGlobalPool *global_;
+    bool fifo_enabled_;
     std::deque<int64_t> ranges_;
     friend int unittests_idalloc(lua_State *L);
 
 public:
     // Construct a player pool.
-    // The Player pool stores a pointer to the global pool.
-    IdPlayerPool(IdGlobalPool *igp);
+    //
+    // The fifo is initially in the disabled state.  In the disabled state, the
+    // fifo is not kept filled.  You can still use the allocator when the fifo is
+    // disabled - doing so just fetches a batch from the global pool.
+    //
+    IdPlayerPool(IdGlobalPool *g);
     ~IdPlayerPool();
 
-    // Refill the fifo queue of batches from the global pool.
-    void refill();
+    // Enable or disable the fifo.
+    void enable_fifo();
+    void disable_fifo();
+    bool fifo_enabled() { return fifo_enabled_; }
 
-    // Return all batches to the global pool.  Leave the fifo empty.
+    // Return all batches from the fifo to the global pool.
     void unqueue();
 
-    // Discard all batches.  This is only for unit testing.
+    // Refill the fifo of batches from the global pool.
+    void refill();
+
+    // Discard all batches in the fifo.  This is only for unit testing.
     void purge();
 
     // Get a batch from the fifo.  Also refills the fifo.