src: split ownsProcessState off isMainThread

Embedders may want to control whether a Node.js instance
controls the current process, similar to what we currently
have with `Worker`s.

Previously, the `isMainThread` flag had a bit of a double usage,
both for indicating whether we are (not) running a Worker and
whether we can modify per-process state.

PR-URL: https://github.com/nodejs/node/pull/25881
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

1 files changed, 6 insertions, 6 deletions

diff --git a/src/node_process_methods.cc b/src/node_process_methods.cc
index 51758f05f6b..a6d2c252e77 100644
--- a/src/node_process_methods.cc
+++ b/src/node_process_methods.cc
@@ -72,7 +72,7 @@ static void Abort(const FunctionCallbackInfo<Value>& args) {
 
 static void Chdir(const FunctionCallbackInfo<Value>& args) {
   Environment* env = Environment::GetCurrent(args);
-  CHECK(env->is_main_thread());
+  CHECK(env->owns_process_state());
 
   CHECK_EQ(args.Length(), 1);
   CHECK(args[0]->IsString());
@@ -392,17 +392,17 @@ static void InitializeProcessMethods(Local<Object> target,
   Environment* env = Environment::GetCurrent(context);
 
   // define various internal methods
-  if (env->is_main_thread()) {
+  if (env->owns_process_state()) {
     env->SetMethod(target, "_debugProcess", DebugProcess);
     env->SetMethod(target, "_debugEnd", DebugEnd);
-    env->SetMethod(
-        target, "_startProfilerIdleNotifier", StartProfilerIdleNotifier);
-    env->SetMethod(
-        target, "_stopProfilerIdleNotifier", StopProfilerIdleNotifier);
     env->SetMethod(target, "abort", Abort);
     env->SetMethod(target, "chdir", Chdir);
   }
 
+  env->SetMethod(
+      target, "_startProfilerIdleNotifier", StartProfilerIdleNotifier);
+  env->SetMethod(target, "_stopProfilerIdleNotifier", StopProfilerIdleNotifier);
+
   env->SetMethod(target, "umask", Umask);
   env->SetMethod(target, "_rawDebug", RawDebug);
   env->SetMethod(target, "memoryUsage", MemoryUsage);