Rename ArenaAllocator -> Arena

src/connection.hpp

@@ -8,7 +8,7 @@
 #include <sys/uio.h>
 #include <unistd.h>
 
-#include "arena_allocator.hpp"
+#include "arena.hpp"
 #include "connection_handler.hpp"
 
 #ifndef __has_feature
@@ -28,7 +28,7 @@
  * - RAII cleanup happens if I/O thread doesn't transfer back
  *
  * Arena allocator thread safety:
- * Each Connection contains its own ArenaAllocator instance that is accessed
+ * Each Connection contains its own Arena instance that is accessed
  * exclusively by the thread that currently owns the connection. This ensures
  * thread safety without requiring locks:
  * - Arena is used by the owning thread for I/O buffers, request parsing, and
@@ -117,7 +117,7 @@ struct Connection {
   /**
    * @brief Get access to the connection's arena allocator.
    *
-   * Returns a reference to this connection's private ArenaAllocator instance,
+   * Returns a reference to this connection's private Arena instance,
    * which should be used for all temporary allocations during request
    * processing. The arena provides extremely fast allocation (~1ns) and
    * automatic cleanup when the connection is destroyed or reset.
@@ -135,7 +135,7 @@ struct Connection {
    *
    * Best practices:
    * ```cpp
-   * ArenaAllocator& arena = conn->get_arena();
+   * Arena& arena = conn->get_arena();
    *
    * // Allocate temporary parsing buffers
    * char* buffer = arena.allocate<char>(1024);
@@ -147,7 +147,7 @@ struct Connection {
    * std::vector<Token, ArenaStlAllocator<Token>> tokens{&arena};
    * ```
    */
-  ArenaAllocator &get_arena() { return arena_; }
+  Arena &get_arena() { return arena_; }
 
   /**
    * @brief Get the unique identifier for this connection.
@@ -345,7 +345,7 @@ private:
   const int64_t id_;
   const size_t epoll_index_; // Index of the epoll instance this connection uses
   struct sockaddr_storage addr_; // sockaddr_storage handles IPv4/IPv6
-  ArenaAllocator arena_;
+  Arena arena_;
   ConnectionHandler *handler_;
   std::weak_ptr<Server> server_; // Weak reference to server for safe cleanup