firefox-main/dom/ipc/jsactor/JSProcessActorChild.cpp (file symbol)

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/* 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/JSProcessActorChild.h"
#include "mozilla/dom/ContentChild.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(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,
JSIPCValue&& aData,
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.
if (NS_WARN_IF(!contentChild->SendRawMessage(aMeta, aData, aStack))) {
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!");
mManager = aManager;
bool sendTyped =
!!mManager->AsContentChild() && JSActorSupportsTypedSend(aName);
JSActor::Init(aName, sendTyped);
}
void JSProcessActorChild::ClearManager() { mManager = nullptr; }
} // namespace mozilla::dom