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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 https://mozilla.org/MPL/2.0/. */
#include "WorkletImpl.h"
#include "Worklet.h"
#include "WorkletThread.h"
#include "mozilla/BasePrincipal.h"
#include "mozilla/NullPrincipal.h"
#include "mozilla/dom/DocGroup.h"
#include "mozilla/dom/RegisterWorkletBindings.h"
#include "mozilla/dom/ScriptSettings.h"
#include "mozilla/dom/WorkletBinding.h"
#include "mozilla/dom/WorkletGlobalScope.h"
#include "mozilla/dom/worklet/WorkletModuleLoader.h"
#include "nsGlobalWindowInner.h"
using mozilla::dom::loader::WorkletModuleLoader;
using mozilla::dom::loader::WorkletScriptLoader;
namespace mozilla {
// ---------------------------------------------------------------------------
// WorkletLoadInfo
WorkletLoadInfo::WorkletLoadInfo(nsPIDOMWindowInner* aWindow)
: mInnerWindowID(aWindow->WindowID()) {
MOZ_ASSERT(NS_IsMainThread());
nsPIDOMWindowOuter* outerWindow = aWindow->GetOuterWindow();
if (outerWindow) {
mOuterWindowID = outerWindow->WindowID();
} else {
mOuterWindowID = 0;
}
}
// ---------------------------------------------------------------------------
// WorkletImpl
WorkletImpl::WorkletImpl(nsPIDOMWindowInner* aWindow, nsIPrincipal* aPrincipal)
: mPrincipal(NullPrincipal::CreateWithInheritedAttributes(aPrincipal)),
mWorkletLoadInfo(aWindow),
mTerminated(false),
mFinishedOnExecutionThread(false),
mTrials(OriginTrials::FromWindow(nsGlobalWindowInner::Cast(aWindow))) {
Unused << NS_WARN_IF(
NS_FAILED(ipc::PrincipalToPrincipalInfo(mPrincipal, &mPrincipalInfo)));
if (aWindow->GetDocGroup()) {
mAgentClusterId.emplace(aWindow->GetDocGroup()->AgentClusterId());
}
mSharedMemoryAllowed =
nsGlobalWindowInner::Cast(aWindow)->IsSharedMemoryAllowed();
mShouldResistFingerprinting = aWindow->AsGlobal()->ShouldResistFingerprinting(
RFPTarget::IsAlwaysEnabledForPrecompute);
}
WorkletImpl::~WorkletImpl() { MOZ_ASSERT(!mGlobalScope); }
JSObject* WorkletImpl::WrapWorklet(JSContext* aCx, dom::Worklet* aWorklet,
JS::Handle<JSObject*> aGivenProto) {
MOZ_ASSERT(NS_IsMainThread());
return dom::Worklet_Binding::Wrap(aCx, aWorklet, aGivenProto);
}
dom::WorkletGlobalScope* WorkletImpl::GetGlobalScope() {
dom::WorkletThread::AssertIsOnWorkletThread();
if (mGlobalScope) {
return mGlobalScope;
}
if (mFinishedOnExecutionThread) {
return nullptr;
}
dom::AutoJSAPI jsapi;
jsapi.Init();
JSContext* cx = jsapi.cx();
mGlobalScope = ConstructGlobalScope();
JS::Rooted<JSObject*> global(cx);
NS_ENSURE_TRUE(mGlobalScope->WrapGlobalObject(cx, &global), nullptr);
JSAutoRealm ar(cx, global);
// Init Web IDL bindings
if (!dom::RegisterWorkletBindings(cx, global)) {
return nullptr;
}
JS_FireOnNewGlobalObject(cx, global);
MOZ_ASSERT(!mGlobalScope->GetModuleLoader(cx));
RefPtr<WorkletScriptLoader> scriptLoader = new WorkletScriptLoader();
RefPtr<WorkletModuleLoader> moduleLoader =
new WorkletModuleLoader(scriptLoader, mGlobalScope);
mGlobalScope->InitModuleLoader(moduleLoader);
return mGlobalScope;
}
void WorkletImpl::NotifyWorkletFinished() {
MOZ_ASSERT(NS_IsMainThread());
if (mTerminated) {
return;
}
// Release global scope on its thread.
SendControlMessage(
NS_NewRunnableFunction("WorkletImpl::NotifyWorkletFinished",
[self = RefPtr<WorkletImpl>(this)]() {
self->mFinishedOnExecutionThread = true;
self->mGlobalScope = nullptr;
}));
mTerminated = true;
if (mWorkletThread) {
mWorkletThread->Terminate();
mWorkletThread = nullptr;
}
}
nsresult WorkletImpl::SendControlMessage(
already_AddRefed<nsIRunnable> aRunnable) {
MOZ_ASSERT(NS_IsMainThread());
RefPtr<nsIRunnable> runnable = std::move(aRunnable);
// TODO: bug 1492011 re ConsoleWorkletRunnable.
if (mTerminated) {
return NS_ERROR_ILLEGAL_DURING_SHUTDOWN;
}
if (!mWorkletThread) {
// Thread creation. FIXME: this will change.
mWorkletThread = dom::WorkletThread::Create(this);
if (!mWorkletThread) {
return NS_ERROR_ILLEGAL_DURING_SHUTDOWN;
}
}
return mWorkletThread->DispatchRunnable(runnable.forget());
}
} // namespace mozilla
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