Revert "workers,trace_events: set thread name for workers"

This reverts commit a24b691.

PR-URL: #21363
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>

src/env-inl.h

@@ -598,11 +598,11 @@ inline bool Environment::is_main_thread() const {
   return thread_id_ == 0;
 }
 
-inline uint64_t Environment::thread_id() const {
+inline double Environment::thread_id() const {
   return thread_id_;
 }
 
-inline void Environment::set_thread_id(uint64_t id) {
+inline void Environment::set_thread_id(double id) {
   thread_id_ = id;
 }
 

src/env.h

@@ -726,8 +726,8 @@ class Environment {
   bool is_stopping_worker() const;
 
   inline bool is_main_thread() const;
-  inline uint64_t thread_id() const;
-  inline void set_thread_id(uint64_t id);
+  inline double thread_id() const;
+  inline void set_thread_id(double id);
   inline worker::Worker* worker_context() const;
   inline void set_worker_context(worker::Worker* context);
   inline void add_sub_worker_context(worker::Worker* context);
@@ -881,7 +881,7 @@ class Environment {
   std::unordered_map<std::string, uint64_t> performance_marks_;
 
   bool can_call_into_js_ = true;
-  uint64_t thread_id_ = 0;
+  double thread_id_ = 0;
   std::unordered_set<worker::Worker*> sub_worker_contexts_;
 
 

src/node_worker.cc

@@ -9,8 +9,6 @@
 #include "async_wrap.h"
 #include "async_wrap-inl.h"
 
-#include <string>
-
 using v8::ArrayBuffer;
 using v8::Context;
 using v8::Function;
@@ -32,7 +30,7 @@ namespace worker {
 
 namespace {
 
-uint64_t next_thread_id = 1;
+double next_thread_id = 1;
 Mutex next_thread_id_mutex;
 
 }  // anonymous namespace
@@ -46,8 +44,7 @@ Worker::Worker(Environment* env, Local<Object> wrap)
   }
   wrap->Set(env->context(),
             env->thread_id_string(),
-            Number::New(env->isolate(),
-                        static_cast<double>(thread_id_))).FromJust();
+            Number::New(env->isolate(), thread_id_)).FromJust();
 
   // Set up everything that needs to be set up in the parent environment.
   parent_port_ = MessagePort::New(env, env->context());
@@ -115,11 +112,6 @@ bool Worker::is_stopped() const {
 }
 
 void Worker::Run() {
-  std::string name = "WorkerThread ";
-  name += std::to_string(thread_id_);
-  TRACE_EVENT_METADATA1(
-      "__metadata", "thread_name", "name",
-      TRACE_STR_COPY(name.c_str()));
   MultiIsolatePlatform* platform = isolate_data_->platform();
   CHECK_NE(platform, nullptr);
 
@@ -426,8 +418,7 @@ void InitWorker(Local<Object> target,
   auto thread_id_string = FIXED_ONE_BYTE_STRING(env->isolate(), "threadId");
   target->Set(env->context(),
               thread_id_string,
-              Number::New(env->isolate(),
-                          static_cast<double>(env->thread_id()))).FromJust();
+              Number::New(env->isolate(), env->thread_id())).FromJust();
 }
 
 }  // anonymous namespace

src/node_worker.h

@@ -62,7 +62,7 @@ class Worker : public AsyncWrap {
 
   bool thread_joined_ = true;
   int exit_code_ = 0;
-  uint64_t thread_id_ = -1;
+  double thread_id_ = -1;
 
   std::unique_ptr<MessagePortData> child_port_data_;