tracing: do not attempt to call into JS when disallowed

addaleax · targos · commit 4e5271acfb3d · 2020-04-11T10:01:15.000+02:00
PR-URL: #32548 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
diff --git a/src/env.cc b/src/env.cc
@@ -207,7 +207,7 @@ void InitThreadLocalOnce() {
 }
 
 void TrackingTraceStateObserver::UpdateTraceCategoryState() {
-  if (!env_->owns_process_state()) {
+  if (!env_->owns_process_state() || !env_->can_call_into_js()) {
     // Ideally, we&rsquo;d have a consistent story that treats all threads/Environment
     // instances equally here. However, tracing is essentially global, and this
     // callback is called from whichever thread calls `StartTracing()` or
@@ -228,8 +228,7 @@ void TrackingTraceStateObserver::UpdateTraceCategoryState() {
   TryCatchScope try_catch(env_);
   try_catch.SetVerbose(true);
   Local<Value> args[] = {Boolean::New(isolate, async_hooks_enabled)};
-  cb->Call(env_->context(), Undefined(isolate), arraysize(args), args)
-      .ToLocalChecked();
+  USE(cb->Call(env_->context(), Undefined(isolate), arraysize(args), args));
 }
 
 static std::atomic<uint64_t> next_thread_id{0};
