src: add Env::profiler_idle_notifier_started()

Refs: ayojs/ayo#93 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>
addaleax · May 22, 2018 · 00e079b · 00e079b
1 parent 35c66d3
commit 00e079b
Show file tree

Hide file tree

Showing 3 changed files with 12 additions and 0 deletions.
diff --git a/src/env-inl.h b/src/env-inl.h
@@ -322,6 +322,10 @@ inline Environment* Environment::GetThreadLocalEnv() {
  return static_cast<Environment*>(uv_key_get(&thread_local_env));
 }
 
+inline bool Environment::profiler_idle_notifier_started() const {
+ return profiler_idle_notifier_started_;
+}
+
 inline v8::Isolate* Environment::isolate() const {
  return isolate_;
 }

diff --git a/src/env.cc b/src/env.cc
@@ -254,6 +254,11 @@ void Environment::CleanupHandles() {
 }
 
 void Environment::StartProfilerIdleNotifier() {
+ if (profiler_idle_notifier_started_)
+ return;
+
+ profiler_idle_notifier_started_ = true;
+
  uv_prepare_start(&idle_prepare_handle_, [](uv_prepare_t* handle) {
  Environment* env = ContainerOf(&Environment::idle_prepare_handle_, handle);
  env->isolate_data()->GetCpuProfiler()->SetIdle(true);
@@ -266,6 +271,7 @@ void Environment::StartProfilerIdleNotifier() {
 }
 
 void Environment::StopProfilerIdleNotifier() {
+ profiler_idle_notifier_started_ = false;
  uv_prepare_stop(&idle_prepare_handle_);
  uv_check_stop(&idle_check_handle_);
 }

diff --git a/src/env.h b/src/env.h
@@ -598,6 +598,7 @@ class Environment {
 
  void StartProfilerIdleNotifier();
  void StopProfilerIdleNotifier();
+ inline bool profiler_idle_notifier_started() const;
 
  inline v8::Isolate* isolate() const;
  inline tracing::Agent* tracing_agent() const;
@@ -816,6 +817,7 @@ class Environment {
  uv_idle_t immediate_idle_handle_;
  uv_prepare_t idle_prepare_handle_;
  uv_check_t idle_check_handle_;
+ bool profiler_idle_notifier_started_ = false;
 
  AsyncHooks async_hooks_;
  ImmediateInfo immediate_info_;