src: use unordered_map for perf marks

PR-URL: #19558
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

src/env-inl.h

@@ -526,7 +526,8 @@ inline performance::performance_state* Environment::performance_state() {
   return performance_state_.get();
 }
 
-inline std::map<std::string, uint64_t>* Environment::performance_marks() {
+inline std::unordered_map<std::string, uint64_t>*
+    Environment::performance_marks() {
   return &performance_marks_;
 }
 

src/env.h

@@ -38,7 +38,6 @@
 #include "node_http2_state.h"
 
 #include <list>
-#include <map>
 #include <stdint.h>
 #include <vector>
 #include <unordered_map>
@@ -625,7 +624,7 @@ class Environment {
   inline AliasedBuffer<uint32_t, v8::Uint32Array>& scheduled_immediate_count();
 
   inline performance::performance_state* performance_state();
-  inline std::map<std::string, uint64_t>* performance_marks();
+  inline std::unordered_map<std::string, uint64_t>* performance_marks();
 
   inline void ThrowError(const char* errmsg);
   inline void ThrowTypeError(const char* errmsg);
@@ -731,7 +730,7 @@ class Environment {
   AliasedBuffer<uint32_t, v8::Uint32Array> scheduled_immediate_count_;
 
   std::unique_ptr<performance::performance_state> performance_state_;
-  std::map<std::string, uint64_t> performance_marks_;
+  std::unordered_map<std::string, uint64_t> performance_marks_;
 
 #if HAVE_INSPECTOR
   std::unique_ptr<inspector::Agent> inspector_agent_;