src: add name for more threads

Author: theanarkh

src/node_platform.cc

@@ -101,6 +101,7 @@ class WorkerThreadsTaskRunner::DelayedTaskScheduler {
 
   std::unique_ptr<uv_thread_t> Start() {
     auto start_thread = [](void* data) {
+      uv_thread_setname("DelayedTaskSchedulerWorker");
       static_cast<DelayedTaskScheduler*>(data)->Run();
     };
     std::unique_ptr<uv_thread_t> t { new uv_thread_t() };

src/node_watchdog.cc

@@ -80,6 +80,7 @@ Watchdog::~Watchdog() {
 
 
 void Watchdog::Run(void* arg) {
+  uv_thread_setname("WatchdogWorker");
   Watchdog* wd = static_cast<Watchdog*>(arg);
 
   // UV_RUN_DEFAULT the loop will be stopped either by the async or the
@@ -229,9 +230,9 @@ void TraceSigintWatchdog::HandleInterrupt() {
 
 #ifdef __POSIX__
 void* SigintWatchdogHelper::RunSigintWatchdog(void* arg) {
+  uv_thread_setname("SigintWatchdogWorker");
   // Inside the helper thread.
   bool is_stopping;
-
   do {
     uv_sem_wait(&instance.sem_);
     is_stopping = InformWatchdogsAboutSignal();

src/tracing/agent.cc

@@ -95,6 +95,7 @@ void Agent::Start() {
   // (within NodeTraceWriter and NodeTraceBuffer constructors).
   // Otherwise the thread could shut down prematurely.
   CHECK_EQ(0, uv_thread_create(&thread_, [](void* arg) {
+    uv_thread_setname("TraceEventWorker");
     Agent* agent = static_cast<Agent*>(arg);
     uv_run(&agent->tracing_loop_, UV_RUN_DEFAULT);
   }, this));