Move process.stdout unref hack to handle_wrap.cc

See #1726

src/handle_wrap.cc

@@ -34,6 +34,23 @@ void HandleWrap::Initialize(Handle<Object> target) {
 }
 
 
+// This function is used only for process.stdout. It's put here instead of
+// in TTYWrap because here we have access to the Close binding.
+Handle<Value> HandleWrap::Unref(const Arguments& args) {
+  HandleScope scope;
+
+  UNWRAP
+
+  // Calling this function twice should never happen.
+  assert(wrap->unref == false);
+
+  wrap->unref = true;
+  uv_unref(uv_default_loop());
+
+  return v8::Undefined();
+}
+
+
 Handle<Value> HandleWrap::Close(const Arguments& args) {
   HandleScope scope;
 
@@ -42,6 +59,11 @@ Handle<Value> HandleWrap::Close(const Arguments& args) {
   assert(!wrap->object_.IsEmpty());
   uv_close(wrap->handle__, OnClose);
 
+  if (wrap->unref) {
+    uv_ref(uv_default_loop());
+    wrap->unref = false;
+  }
+
   wrap->StateChange();
 
   return v8::Null();
@@ -49,6 +71,7 @@ Handle<Value> HandleWrap::Close(const Arguments& args) {
 
 
 HandleWrap::HandleWrap(Handle<Object> object, uv_handle_t* h) {
+  unref = false;
   handle__ = h;
   if (h) {
     h->data = this;

src/handle_wrap.h

@@ -27,6 +27,7 @@ class HandleWrap {
   public:
     static void Initialize(v8::Handle<v8::Object> target);
     static v8::Handle<v8::Value> Close(const v8::Arguments& args);
+    static v8::Handle<v8::Value> Unref(const v8::Arguments& args);
 
   protected:
     HandleWrap(v8::Handle<v8::Object> object, uv_handle_t* handle);
@@ -42,6 +43,7 @@ class HandleWrap {
     // Using double underscore due to handle_ member in tcp_wrap. Probably
     // tcp_wrap should rename it's member to 'handle'.
     uv_handle_t* handle__;
+    bool unref;
 };
 
 

src/node.js

@@ -235,12 +235,9 @@
           stdout = new tty.WriteStream(fd);
           stdout._type = "tty";
 
-          // FIXME Hack to have stdout not keep the event loop alive.
+          // Hack to have stdout not keep the event loop alive.
           // See https://github.com/joyent/node/issues/1726
-          binding.unref();
-          stdout.on('close', function() {
-            binding.ref();
-          });
+          stdout._handle.unref();
           break;
 
         case 'FILE':
@@ -262,10 +259,7 @@
 
           // FIXME Hack to have stdout not keep the event loop alive.
           // See https://github.com/joyent/node/issues/1726
-          binding.unref();
-          stdout.on('close', function() {
-            binding.ref();
-          });
+          stdout._handle.unref();
           break;
 
         default:

src/node_stdio.cc

@@ -191,35 +191,6 @@ static Handle<Value> WriteError (const Arguments& args) {
 }
 
 
-// This exists to prevent process.stdout from keeping the event loop alive.
-// It is only ever called in src/node.js during the initalization of
-// process.stdout and will fail if called more than once. We do not want to
-// expose uv_ref and uv_unref to javascript in general.
-// This should be removed in the future!
-static bool unref_called = false;
-static Handle<Value> Unref(const Arguments& args) {
-  HandleScope scope;
-
-  assert(unref_called == false);
-
-  uv_unref(uv_default_loop());
-  unref_called = true;
-
-  return Null();
-}
-
-
-static Handle<Value> Ref(const Arguments& args) {
-  HandleScope scope;
-
-  assert(unref_called == true);
-
-  uv_ref(uv_default_loop());
-
-  return Null();
-}
-
-
 static Handle<Value> OpenStdin(const Arguments& args) {
   HandleScope scope;
 
@@ -347,9 +318,6 @@ void Stdio::Initialize(v8::Handle<v8::Object> target) {
   NODE_SET_METHOD(target, "isatty", IsATTY);
   NODE_SET_METHOD(target, "openpty", OpenPTY);
 
-  NODE_SET_METHOD(target, "unref", Unref);
-  NODE_SET_METHOD(target, "ref", Ref);
-
   struct sigaction sa;
   memset(&sa, 0, sizeof(sa));
   sa.sa_handler = HandleSIGCONT;

src/pipe_wrap.cc

@@ -61,6 +61,7 @@ void PipeWrap::Initialize(Handle<Object> target) {
   t->InstanceTemplate()->SetInternalFieldCount(1);
 
   NODE_SET_PROTOTYPE_METHOD(t, "close", HandleWrap::Close);
+  NODE_SET_PROTOTYPE_METHOD(t, "unref", HandleWrap::Unref);
 
   NODE_SET_PROTOTYPE_METHOD(t, "readStart", StreamWrap::ReadStart);
   NODE_SET_PROTOTYPE_METHOD(t, "readStop", StreamWrap::ReadStop);

src/tty_wrap.cc

@@ -45,6 +45,7 @@ class TTYWrap : StreamWrap {
     t->InstanceTemplate()->SetInternalFieldCount(1);
 
     NODE_SET_PROTOTYPE_METHOD(t, "close", HandleWrap::Close);
+    NODE_SET_PROTOTYPE_METHOD(t, "unref", HandleWrap::Unref);
 
     NODE_SET_PROTOTYPE_METHOD(t, "readStart", StreamWrap::ReadStart);
     NODE_SET_PROTOTYPE_METHOD(t, "readStop", StreamWrap::ReadStop);