src: use unique_ptr for http2_state

PR-URL: #17078
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

Author: fhinkel

src/env-inl.h

@@ -340,7 +340,6 @@ inline Environment::~Environment() {
   delete[] heap_statistics_buffer_;
   delete[] heap_space_statistics_buffer_;
   delete[] http_parser_buffer_;
-  delete http2_state_;
   free(performance_state_);
 }
 
@@ -495,12 +494,13 @@ inline void Environment::set_http_parser_buffer(char* buffer) {
 }
 
 inline http2::http2_state* Environment::http2_state() const {
-  return http2_state_;
+  return http2_state_.get();
 }
 
-inline void Environment::set_http2_state(http2::http2_state* buffer) {
-  CHECK_EQ(http2_state_, nullptr);  // Should be set only once.
-  http2_state_ = buffer;
+inline void Environment::set_http2_state(
+    std::unique_ptr<http2::http2_state> buffer) {
+  CHECK(!http2_state_);  // Should be set only once.
+  http2_state_ = std::move(buffer);
 }
 
 inline double* Environment::fs_stats_field_array() const {

src/env.h

@@ -619,7 +619,7 @@ class Environment {
   inline void set_http_parser_buffer(char* buffer);
 
   inline http2::http2_state* http2_state() const;
-  inline void set_http2_state(http2::http2_state * state);
+  inline void set_http2_state(std::unique_ptr<http2::http2_state> state);
 
   inline double* fs_stats_field_array() const;
   inline void set_fs_stats_field_array(double* fields);
@@ -737,7 +737,7 @@ class Environment {
   double* heap_space_statistics_buffer_ = nullptr;
 
   char* http_parser_buffer_;
-  http2::http2_state* http2_state_ = nullptr;
+  std::unique_ptr<http2::http2_state> http2_state_;
 
   double* fs_stats_field_array_;
 

src/node_http2.cc

@@ -2069,8 +2069,7 @@ void Initialize(Local<Object> target,
   Isolate* isolate = env->isolate();
   HandleScope scope(isolate);
 
-  http2_state* state = new http2_state(isolate);
-  env->set_http2_state(state);
+  std::unique_ptr<http2_state> state(new http2_state(isolate));
 
 #define SET_STATE_TYPEDARRAY(name, field)             \
   target->Set(context,                                \
@@ -2092,6 +2091,8 @@ void Initialize(Local<Object> target,
     "optionsBuffer", state->options_buffer.GetJSArray());
 #undef SET_STATE_TYPEDARRAY
 
+  env->set_http2_state(std::move(state));
+
   NODE_DEFINE_CONSTANT(target, PADDING_BUF_FRAME_LENGTH);
   NODE_DEFINE_CONSTANT(target, PADDING_BUF_MAX_PAYLOAD_LENGTH);
   NODE_DEFINE_CONSTANT(target, PADDING_BUF_RETURN_VALUE);