Serialization for idalloc and animqueue

luprex/core/cpp/idalloc.hpp

@@ -76,7 +76,7 @@ private:
     std::vector<int64_t> salvaged_;
     int64_t next_batch_;
     int64_t next_id_;
-    int queue_fill_;
+    int32_t queue_fill_;
     friend int unittests_idalloc(lua_State *L);
 
 public:
@@ -120,10 +120,8 @@ public:
     // batch if possible.  If not, fetches one ID from the global pool.
     int64_t alloc_id_for_thread(lua_State *L);
 
-    // Serialize to a streambuffer.
+    // Serialize to or deserialize from a streambuffer.
     void serialize(StreamBuffer *sb);
-
-    // Deserialize from a streambuffer.
     void deserialize(StreamBuffer *sb);
 };
 
@@ -163,10 +161,9 @@ public:
     // Return the size of the queue.
     int size() { return ranges_.size(); }
 
-    // Serialize to a streambuffer.
+    // Serialize to or deserialize from a streambuffer.
+    // Caution: the pointer to the global pool is not serialized or deserialized.
     void serialize(StreamBuffer *sb);
-
-    // Deserialize from a streambuffer.
     void deserialize(StreamBuffer *sb);
 };