Rename ArenaAllocator -> Arena

benchmarks/bench_arena.cpp

@@ -1,4 +1,4 @@
-#include "arena_allocator.hpp"
+#include "arena.hpp"
 
 #include <nanobench.h>
 #include <vector>
@@ -14,8 +14,8 @@ int main() {
 
     {
       // Arena allocator benchmark
-      ArenaAllocator arena;
-      bench.run("ArenaAllocator", [&] {
+      Arena arena;
+      bench.run("Arena", [&] {
         void *ptr = arena.allocate_raw(alloc_size);
         ankerl::nanobench::doNotOptimizeAway(ptr);
       });

benchmarks/bench_format_comparison.cpp

@@ -1,4 +1,4 @@
-#include "arena_allocator.hpp"
+#include "arena.hpp"
 #include "format.hpp"
 #include <cstdio>
 #include <iomanip>
@@ -26,7 +26,7 @@ void benchmark_simple_concatenation() {
   ankerl::nanobench::Bench bench;
   bench.title("Simple Concatenation").unit("op").warmup(100);
 
-  ArenaAllocator arena(64);
+  Arena arena(64);
   // Arena-based static_format
   bench.run("static_format", [&] {
     auto result = static_format(arena, "Hello ", "World", "!");
@@ -65,7 +65,7 @@ void benchmark_mixed_types() {
   ankerl::nanobench::Bench bench;
   bench.title("Mixed Types").unit("op").warmup(100);
 
-  ArenaAllocator arena(128);
+  Arena arena(128);
   // Arena-based static_format
   bench.run("static_format", [&] {
     auto result =
@@ -106,7 +106,7 @@ void benchmark_complex_formatting() {
   ankerl::nanobench::Bench bench;
   bench.title("Complex Formatting").unit("op").warmup(100);
 
-  ArenaAllocator arena(128);
+  Arena arena(128);
   // Arena-based format (static_format doesn't support printf specifiers)
   bench.run("format", [&] {
     auto result = format(arena, "%-10s %5d %8.2f", TEST_STRING.c_str(),
@@ -147,7 +147,7 @@ void benchmark_error_messages() {
   constexpr int line_number = 123;
   const std::string error_msg = "File not found";
 
-  ArenaAllocator arena(128);
+  Arena arena(128);
   // Arena-based static_format (using string literals only)
   bench.run("static_format", [&] {
     auto result = static_format(arena, "Error ", error_code, ": ",
@@ -188,7 +188,7 @@ void benchmark_double_formatting() {
   std::cout << "\n=== Simple Double Formatting ===\n";
 
   // Validate that all formatters produce identical output
-  ArenaAllocator arena(128);
+  Arena arena(128);
 
   auto static_result = static_format(arena, TEST_DOUBLE);
   auto format_result = format(arena, "%.17g", TEST_DOUBLE);

benchmarks/bench_metric.cpp

@@ -1,6 +1,6 @@
 #include <nanobench.h>
 
-#include "arena_allocator.hpp"
+#include "arena.hpp"
 #include "metric.hpp"
 
 #include <atomic>
@@ -62,7 +62,7 @@ struct ContentionEnvironment {
     render_latch = std::make_unique<std::latch>(2);
 
     background_threads.emplace_back([this]() {
-      ArenaAllocator arena;
+      Arena arena;
 
       render_latch->arrive_and_wait(); // Render thread signals it's ready
 
@@ -201,7 +201,7 @@ int main() {
             });
       }
 
-      ArenaAllocator arena;
+      Arena arena;
       std::string bench_name =
           "render() - " + std::to_string(scale) + " metrics each type";
 

benchmarks/bench_parser_comparison.cpp

@@ -14,9 +14,9 @@
 using namespace weaseldb::test_data;
 
 // Arena-based allocator adapter for RapidJSON
-class RapidJsonArenaAllocator {
+class RapidJsonArenaAdapter {
 public:
-  explicit RapidJsonArenaAllocator(ArenaAllocator *arena) : arena_(arena) {}
+  explicit RapidJsonArenaAdapter(Arena *arena) : arena_(arena) {}
 
   static const bool kNeedFree = false;
 
@@ -37,7 +37,7 @@ public:
   }
 
 private:
-  ArenaAllocator *arena_;
+  Arena *arena_;
 };
 
 // Arena-based RapidJSON SAX handler for commit request parsing
@@ -56,7 +56,7 @@ public:
     std::string_view key, value, begin, end;
   };
 
-  ArenaAllocator arena;
+  Arena arena;
   bool valid = true;
   std::string_view request_id, leader_id;
   uint64_t read_version = 0;