src: add proper MemoryInfoName to wrappers

- Use camel case names for memory retainers inherited from AsyncWrap
  instead of their provider names (which are all in upper case)
- Assign class names to wraps so that they appear in the heap snapshot
  as nodes with class names as node names. Previously some nodes are
  named with reference names, which are supposed to be edge names
  instead.

Author: joyeecheung

src/async_wrap.h

@@ -174,7 +174,7 @@ class AsyncWrap : public BaseObject {
       v8::Local<v8::Value>* argv);
 
   virtual std::string diagnostic_name() const;
-  std::string MemoryInfoName() const override;
+  virtual std::string MemoryInfoName() const;
 
   static void WeakCallback(const v8::WeakCallbackInfo<DestroyParam> &info);
 

src/base_object.h

@@ -33,6 +33,11 @@ namespace node {
 
 class Environment;
 
+#define ADD_MEMORY_INFO_NAME(name)                                          \
+  std::string MemoryInfoName() const override {                             \
+    return #name;                                                           \
+  }
+
 class BaseObject : public MemoryRetainer {
  public:
   // Associates this object with `object`. It uses the 0th internal field for

src/cares_wrap.cc

@@ -127,6 +127,7 @@ struct node_ares_task : public MemoryRetainer {
   uv_poll_t poll_watcher;
 
   void MemoryInfo(MemoryTracker* tracker) const override;
+  ADD_MEMORY_INFO_NAME(node_ares_task)
 };
 
 struct TaskHash {
@@ -173,9 +174,11 @@ class ChannelWrap : public AsyncWrap {
     tracker->TrackThis(this);
     if (timer_handle_ != nullptr)
       tracker->TrackFieldWithSize("timer handle", sizeof(*timer_handle_));
-    tracker->TrackField("task list", task_list_);
+    tracker->TrackField("node_ares_task_list", task_list_);
   }
 
+  ADD_MEMORY_INFO_NAME(ChannelWrap)
+
   static void AresTimeout(uv_timer_t* handle);
 
  private:
@@ -225,6 +228,8 @@ class GetAddrInfoReqWrap : public ReqWrap<uv_getaddrinfo_t> {
     tracker->TrackThis(this);
   }
 
+  ADD_MEMORY_INFO_NAME(GetAddrInfoReqWrap)
+
   bool verbatim() const { return verbatim_; }
 
  private:
@@ -246,6 +251,8 @@ class GetNameInfoReqWrap : public ReqWrap<uv_getnameinfo_t> {
   void MemoryInfo(MemoryTracker* tracker) const override {
     tracker->TrackThis(this);
   }
+
+  ADD_MEMORY_INFO_NAME(GetNameInfoReqWrap)
 };
 
 GetNameInfoReqWrap::GetNameInfoReqWrap(Environment* env,
@@ -1193,6 +1200,8 @@ class QueryAnyWrap: public QueryWrap {
     tracker->TrackThis(this);
   }
 
+  ADD_MEMORY_INFO_NAME(QueryAnyWrap)
+
  protected:
   void Parse(unsigned char* buf, int len) override {
     HandleScope handle_scope(env()->isolate());
@@ -1372,6 +1381,8 @@ class QueryAWrap: public QueryWrap {
     tracker->TrackThis(this);
   }
 
+  ADD_MEMORY_INFO_NAME(QueryAWrap)
+
  protected:
   void Parse(unsigned char* buf, int len) override {
     HandleScope handle_scope(env()->isolate());
@@ -1418,6 +1429,8 @@ class QueryAaaaWrap: public QueryWrap {
     tracker->TrackThis(this);
   }
 
+  ADD_MEMORY_INFO_NAME(QueryAaaaWrap)
+
  protected:
   void Parse(unsigned char* buf, int len) override {
     HandleScope handle_scope(env()->isolate());
@@ -1464,6 +1477,8 @@ class QueryCnameWrap: public QueryWrap {
     tracker->TrackThis(this);
   }
 
+  ADD_MEMORY_INFO_NAME(QueryCnameWrap)
+
  protected:
   void Parse(unsigned char* buf, int len) override {
     HandleScope handle_scope(env()->isolate());
@@ -1497,6 +1512,8 @@ class QueryMxWrap: public QueryWrap {
     tracker->TrackThis(this);
   }
 
+  ADD_MEMORY_INFO_NAME(QueryMxWrap)
+
  protected:
   void Parse(unsigned char* buf, int len) override {
     HandleScope handle_scope(env()->isolate());
@@ -1530,6 +1547,8 @@ class QueryNsWrap: public QueryWrap {
     tracker->TrackThis(this);
   }
 
+  ADD_MEMORY_INFO_NAME(QueryNsWrap)
+
  protected:
   void Parse(unsigned char* buf, int len) override {
     HandleScope handle_scope(env()->isolate());
@@ -1563,6 +1582,8 @@ class QueryTxtWrap: public QueryWrap {
     tracker->TrackThis(this);
   }
 
+  ADD_MEMORY_INFO_NAME(QueryTxtWrap)
+
  protected:
   void Parse(unsigned char* buf, int len) override {
     HandleScope handle_scope(env()->isolate());
@@ -1595,6 +1616,8 @@ class QuerySrvWrap: public QueryWrap {
     tracker->TrackThis(this);
   }
 
+  ADD_MEMORY_INFO_NAME(QuerySrvWrap)
+
  protected:
   void Parse(unsigned char* buf, int len) override {
     HandleScope handle_scope(env()->isolate());
@@ -1626,6 +1649,8 @@ class QueryPtrWrap: public QueryWrap {
     tracker->TrackThis(this);
   }
 
+  ADD_MEMORY_INFO_NAME(QueryPtrWrap)
+
  protected:
   void Parse(unsigned char* buf, int len) override {
     HandleScope handle_scope(env()->isolate());
@@ -1659,6 +1684,8 @@ class QueryNaptrWrap: public QueryWrap {
     tracker->TrackThis(this);
   }
 
+  ADD_MEMORY_INFO_NAME(QueryNaptrWrap)
+
  protected:
   void Parse(unsigned char* buf, int len) override {
     HandleScope handle_scope(env()->isolate());
@@ -1691,6 +1718,8 @@ class QuerySoaWrap: public QueryWrap {
     tracker->TrackThis(this);
   }
 
+  ADD_MEMORY_INFO_NAME(QuerySoaWrap)
+
  protected:
   void Parse(unsigned char* buf, int len) override {
     HandleScope handle_scope(env()->isolate());
@@ -1772,6 +1801,8 @@ class GetHostByAddrWrap: public QueryWrap {
     tracker->TrackThis(this);
   }
 
+  ADD_MEMORY_INFO_NAME(GetHostByAddrWrap)
+
  protected:
   void Parse(struct hostent* host) override {
     HandleScope handle_scope(env()->isolate());

src/connect_wrap.h

@@ -19,6 +19,8 @@ class ConnectWrap : public ReqWrap<uv_connect_t> {
   void MemoryInfo(MemoryTracker* tracker) const override {
     tracker->TrackThis(this);
   }
+
+  ADD_MEMORY_INFO_NAME(ConnectWrap)
 };
 
 }  // namespace node

src/fs_event_wrap.cc

@@ -61,6 +61,8 @@ class FSEventWrap: public HandleWrap {
     tracker->TrackThis(this);
   }
 
+  ADD_MEMORY_INFO_NAME(FSEventWrap)
+
  private:
   static const encoding kDefaultEncoding = UTF8;
 

src/inspector_js_api.cc

@@ -109,6 +109,8 @@ class JSBindingsConnection : public AsyncWrap {
     tracker->TrackFieldWithSize("session", sizeof(*session_));
   }
 
+  ADD_MEMORY_INFO_NAME(JSBindingsConnection)
+
  private:
   std::unique_ptr<InspectorSession> session_;
   Persistent<Function> callback_;

src/js_stream.h

@@ -31,6 +31,8 @@ class JSStream : public AsyncWrap, public StreamBase {
     tracker->TrackThis(this);
   }
 
+  ADD_MEMORY_INFO_NAME(JSStream)
+
  protected:
   JSStream(Environment* env, v8::Local<v8::Object> obj);
 

src/module_wrap.h

@@ -39,6 +39,8 @@ class ModuleWrap : public BaseObject {
     tracker->TrackField("resolve_cache", resolve_cache_);
   }
 
+  ADD_MEMORY_INFO_NAME(ModuleWrap)
+
  private:
   ModuleWrap(Environment* env,
              v8::Local<v8::Object> object,

src/node_contextify.cc

@@ -592,6 +592,8 @@ class ContextifyScript : public BaseObject {
     tracker->TrackThis(this);
   }
 
+  ADD_MEMORY_INFO_NAME(ContextifyScript)
+
  public:
   static void Init(Environment* env, Local<Object> target) {
     HandleScope scope(env->isolate());

src/node_crypto.h

@@ -109,6 +109,8 @@ class SecureContext : public BaseObject {
     tracker->TrackThis(this);
   }
 
+  ADD_MEMORY_INFO_NAME(SecureContext)
+
   SSLCtxPointer ctx_;
   X509Pointer cert_;
   X509Pointer issuer_;
@@ -345,6 +347,8 @@ class CipherBase : public BaseObject {
     tracker->TrackThis(this);
   }
 
+  ADD_MEMORY_INFO_NAME(CipherBase)
+
  protected:
   enum CipherKind {
     kCipher,
@@ -419,6 +423,8 @@ class Hmac : public BaseObject {
     tracker->TrackThis(this);
   }
 
+  ADD_MEMORY_INFO_NAME(Hmac)
+
  protected:
   void HmacInit(const char* hash_type, const char* key, int key_len);
   bool HmacUpdate(const char* data, int len);
@@ -446,6 +452,8 @@ class Hash : public BaseObject {
     tracker->TrackThis(this);
   }
 
+  ADD_MEMORY_INFO_NAME(Hash)
+
   bool HashInit(const char* hash_type);
   bool HashUpdate(const char* data, int len);
 
@@ -489,6 +497,8 @@ class SignBase : public BaseObject {
     tracker->TrackThis(this);
   }
 
+  ADD_MEMORY_INFO_NAME(SignBase)
+
  protected:
   void CheckThrow(Error error);
 
@@ -605,6 +615,8 @@ class DiffieHellman : public BaseObject {
     tracker->TrackThis(this);
   }
 
+  ADD_MEMORY_INFO_NAME(DiffieHellman)
+
  private:
   static void GetField(const v8::FunctionCallbackInfo<v8::Value>& args,
                        const BIGNUM* (*get_field)(const DH*),
@@ -634,6 +646,8 @@ class ECDH : public BaseObject {
     tracker->TrackThis(this);
   }
 
+  ADD_MEMORY_INFO_NAME(ECDH)
+
  protected:
   ECDH(Environment* env, v8::Local<v8::Object> wrap, ECKeyPointer&& key)
       : BaseObject(env, wrap),