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/* -*- 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/JSProcessActorParent.h"
#include "mozilla/dom/InProcessChild.h"
#include "mozilla/dom/InProcessParent.h"
#include "mozilla/dom/JSIPCValue.h"
#include "mozilla/dom/JSIPCValueUtils.h"
#include "mozilla/dom/JSProcessActorBinding.h"
namespace mozilla::dom {
NS_IMPL_CYCLE_COLLECTION_INHERITED(JSProcessActorParent, JSActor, mManager)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(JSProcessActorParent)
NS_INTERFACE_MAP_END_INHERITING(JSActor)
NS_IMPL_ADDREF_INHERITED(JSProcessActorParent, JSActor)
NS_IMPL_RELEASE_INHERITED(JSProcessActorParent, JSActor)
JSObject* JSProcessActorParent::WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return JSProcessActorParent_Binding::Wrap(aCx, this, aGivenProto);
}
void JSProcessActorParent::Init(const nsACString& aName,
nsIDOMProcessParent* aManager) {
MOZ_ASSERT(!mManager, "Cannot Init() a JSProcessActorParent twice!");
mManager = aManager;
JSActor::Init(aName, /* aSendTyped= */ false);
}
JSProcessActorParent::~JSProcessActorParent() { MOZ_ASSERT(!mManager); }
void JSProcessActorParent::SendRawMessage(
const JSActorMessageMeta& aMeta, JSIPCValue&& aData,
UniquePtr<ipc::StructuredCloneData> aStack, ErrorResult& aRv) {
if (NS_WARN_IF(!CanSend() || !mManager || !mManager->GetCanSend())) {
aRv.ThrowInvalidStateError(
nsPrintfCString("Actor '%s' cannot send message '%s' during shutdown.",
PromiseFlatCString(aMeta.actorName()).get(),
NS_ConvertUTF16toUTF8(aMeta.messageName()).get()));
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.
ContentParent* contentParent = mManager->AsContentParent();
if (!contentParent) {
SendRawMessageInProcess(aMeta, std::move(aData), std::move(aStack), []() {
return do_AddRef(InProcessChild::Singleton());
});
return;
}
// Cross-process case - send data over ContentParent to other side.
JSIPCValueUtils::SCDHolder holder;
if (NS_WARN_IF(!JSIPCValueUtils::PrepareForSending(holder, aData))) {
aRv.ThrowDataCloneError(
nsPrintfCString("Actor '%s' cannot send message '%s': cannot clone.",
PromiseFlatCString(aMeta.actorName()).get(),
NS_ConvertUTF16toUTF8(aMeta.messageName()).get()));
return;
}
UniquePtr<ClonedMessageData> stackData;
if (aStack) {
stackData = MakeUnique<ClonedMessageData>();
if (!aStack->BuildClonedMessageData(*stackData)) {
stackData.reset();
}
}
if (NS_WARN_IF(!contentParent->SendRawMessage(aMeta, aData, stackData))) {
aRv.ThrowOperationError(
nsPrintfCString("JSProcessActorParent send error in actor '%s'",
PromiseFlatCString(aMeta.actorName()).get()));
return;
}
}
void JSProcessActorParent::ClearManager() { mManager = nullptr; }
} // namespace mozilla::dom
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