зеркало из https://github.com/mozilla/gecko-dev.git
125 строки
3.3 KiB
C++
125 строки
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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#include "WorkletImpl.h"
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#include "Worklet.h"
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#include "WorkletThread.h"
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#include "mozilla/BasePrincipal.h"
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#include "mozilla/NullPrincipal.h"
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#include "mozilla/dom/RegisterWorkletBindings.h"
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#include "mozilla/dom/ScriptSettings.h"
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#include "mozilla/dom/WorkletBinding.h"
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namespace mozilla {
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// ---------------------------------------------------------------------------
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// WorkletLoadInfo
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WorkletLoadInfo::WorkletLoadInfo(nsPIDOMWindowInner* aWindow)
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: mInnerWindowID(aWindow->WindowID()) {
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MOZ_ASSERT(NS_IsMainThread());
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nsPIDOMWindowOuter* outerWindow = aWindow->GetOuterWindow();
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if (outerWindow) {
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mOuterWindowID = outerWindow->WindowID();
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} else {
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mOuterWindowID = 0;
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}
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}
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// ---------------------------------------------------------------------------
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// WorkletImpl
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WorkletImpl::WorkletImpl(nsPIDOMWindowInner* aWindow, nsIPrincipal* aPrincipal)
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: mPrincipal(NullPrincipal::CreateWithInheritedAttributes(aPrincipal)),
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mWorkletLoadInfo(aWindow),
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mTerminated(false) {
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Unused << NS_WARN_IF(
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NS_FAILED(ipc::PrincipalToPrincipalInfo(mPrincipal, &mPrincipalInfo)));
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}
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WorkletImpl::~WorkletImpl() {
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MOZ_ASSERT(!mGlobalScope);
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MOZ_ASSERT(!mPrincipal || NS_IsMainThread());
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}
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JSObject* WorkletImpl::WrapWorklet(JSContext* aCx, dom::Worklet* aWorklet,
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JS::Handle<JSObject*> aGivenProto) {
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MOZ_ASSERT(NS_IsMainThread());
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return dom::Worklet_Binding::Wrap(aCx, aWorklet, aGivenProto);
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}
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dom::WorkletGlobalScope* WorkletImpl::GetGlobalScope() {
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dom::WorkletThread::AssertIsOnWorkletThread();
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if (mGlobalScope) {
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return mGlobalScope;
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}
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dom::AutoJSAPI jsapi;
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jsapi.Init();
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JSContext* cx = jsapi.cx();
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mGlobalScope = ConstructGlobalScope();
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JS::Rooted<JSObject*> global(cx);
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NS_ENSURE_TRUE(mGlobalScope->WrapGlobalObject(cx, &global), nullptr);
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JSAutoRealm ar(cx, global);
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// Init Web IDL bindings
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if (!dom::RegisterWorkletBindings(cx, global)) {
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return nullptr;
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}
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JS_FireOnNewGlobalObject(cx, global);
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return mGlobalScope;
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}
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void WorkletImpl::NotifyWorkletFinished() {
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MOZ_ASSERT(NS_IsMainThread());
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if (mTerminated) {
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return;
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}
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// Release global scope on its thread.
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SendControlMessage(NS_NewRunnableFunction(
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"WorkletImpl::NotifyWorkletFinished",
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[self = RefPtr<WorkletImpl>(this)]() { self->mGlobalScope = nullptr; }));
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mTerminated = true;
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if (mWorkletThread) {
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mWorkletThread->Terminate();
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mWorkletThread = nullptr;
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}
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mPrincipal = nullptr;
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}
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nsresult WorkletImpl::SendControlMessage(
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already_AddRefed<nsIRunnable> aRunnable) {
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MOZ_ASSERT(NS_IsMainThread());
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// TODO: bug 1492011 re ConsoleWorkletRunnable.
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if (mTerminated) {
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return NS_ERROR_ILLEGAL_DURING_SHUTDOWN;
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}
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if (!mWorkletThread) {
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// Thread creation. FIXME: this will change.
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mWorkletThread = dom::WorkletThread::Create(this);
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if (!mWorkletThread) {
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return NS_ERROR_UNEXPECTED;
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}
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}
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return mWorkletThread->DispatchRunnable(std::move(aRunnable));
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}
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} // namespace mozilla
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