1 files changed, 86 insertions, 0 deletions
diff --git a/dom/ipc/jsactor/JSProcessActorChild.cpp b/dom/ipc/jsactor/JSProcessActorChild.cpp
new file mode 100644
index 0000000000..a9379838cf
--- /dev/null
+++ b/dom/ipc/jsactor/JSProcessActorChild.cpp
@@ -0,0 +1,86 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/dom/ContentChild.h"
+#include "mozilla/dom/JSProcessActorBinding.h"
+#include "mozilla/dom/JSProcessActorChild.h"
+#include "mozilla/dom/InProcessChild.h"
+#include "mozilla/dom/InProcessParent.h"
+
+namespace mozilla::dom {
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(JSProcessActorChild, JSActor, mManager)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(JSProcessActorChild)
+NS_INTERFACE_MAP_END_INHERITING(JSActor)
+
+NS_IMPL_ADDREF_INHERITED(JSProcessActorChild, JSActor)
+NS_IMPL_RELEASE_INHERITED(JSProcessActorChild, JSActor)
+
+JSObject* JSProcessActorChild::WrapObject(JSContext* aCx,
+                                          JS::Handle<JSObject*> aGivenProto) {
+  return JSProcessActorChild_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+void JSProcessActorChild::SendRawMessage(
+    const JSActorMessageMeta& aMeta, Maybe<ipc::StructuredCloneData>&& aData,
+    Maybe<ipc::StructuredCloneData>&& aStack, ErrorResult& aRv) {
+  if (NS_WARN_IF(!CanSend() || !mManager || !mManager->GetCanSend())) {
+    aRv.ThrowInvalidStateError("JSProcessActorChild cannot send at the moment");
+    return;
+  }
+
+  // If the parent side is in the same process, we have a PInProcess manager,
+  // and can dispatch the message directly to the event loop.
+  ContentChild* contentChild = mManager->AsContentChild();
+  if (!contentChild) {
+    SendRawMessageInProcess(aMeta, std::move(aData), std::move(aStack), []() {
+      return do_AddRef(InProcessParent::Singleton());
+    });
+    return;
+  }
+
+  // Cross-process case - send data over ContentChild to other side.
+  Maybe<ClonedMessageData> msgData;
+  if (aData) {
+    msgData.emplace();
+    if (NS_WARN_IF(!aData->BuildClonedMessageData(*msgData))) {
+      aRv.ThrowDataCloneError(
+          nsPrintfCString("JSProcessActorChild serialization error: cannot "
+                          "clone, in actor '%s'",
+                          PromiseFlatCString(aMeta.actorName()).get()));
+      return;
+    }
+  }
+
+  Maybe<ClonedMessageData> stackData;
+  if (aStack) {
+    stackData.emplace();
+    if (!aStack->BuildClonedMessageData(*stackData)) {
+      stackData.reset();
+    }
+  }
+
+  if (NS_WARN_IF(!contentChild->SendRawMessage(aMeta, msgData, stackData))) {
+    aRv.ThrowOperationError(
+        nsPrintfCString("JSProcessActorChild send error in actor '%s'",
+                        PromiseFlatCString(aMeta.actorName()).get()));
+    return;
+  }
+}
+
+void JSProcessActorChild::Init(const nsACString& aName,
+                               nsIDOMProcessChild* aManager) {
+  MOZ_ASSERT(!mManager, "Cannot Init() a JSProcessActorChild twice!");
+  SetName(aName);
+  mManager = aManager;
+
+  InvokeCallback(CallbackFunction::ActorCreated);
+}
+
+void JSProcessActorChild::ClearManager() { mManager = nullptr; }
+
+}  // namespace mozilla::dom